{"id":5226,"date":"2021-05-12T12:08:48","date_gmt":"2021-05-12T04:08:48","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=5226"},"modified":"2021-05-12T12:08:48","modified_gmt":"2021-05-12T04:08:48","slug":"25-%e5%bc%a0%e5%9b%be%ef%bc%8c%e4%b8%80%e4%b8%87%e5%ad%97%ef%bc%8c%e6%8b%86%e8%a7%a3-linux-%e7%bd%91%e7%bb%9c%e5%8c%85%e5%8f%91%e9%80%81%e8%bf%87%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/5226","title":{"rendered":"25 \u5f20\u56fe\uff0c\u4e00\u4e07\u5b57\uff0c\u62c6\u89e3 Linux \u7f51\u7edc\u5305\u53d1\u9001\u8fc7\u7a0b"},"content":{"rendered":"<p id=\"activity-name\" class=\"rich_media_title\"><a href=\"https:\/\/mp.weixin.qq.com\/s\/wThfD9th9e_-YGHJJ3HXNQ\">\u539f\u6587\u5730\u5740<\/a><\/p>\n<p>&nbsp;<\/p>\n<div id=\"meta_content\" class=\"rich_media_meta_list\"><span id=\"copyright_logo\" class=\"rich_media_meta icon_appmsg_tag appmsg_title_tag\">\u539f\u521b<\/span>\u00a0<span class=\"rich_media_meta rich_media_meta_text\"><span id=\"js_author_name\" class=\"\">\u5f20\u5f66\u98deallen<\/span><\/span>\u00a0<span id=\"profileBt\" class=\"rich_media_meta rich_media_meta_nickname\"><a id=\"js_name\"><\/a>\u5f00\u53d1\u5185\u529f\u4fee\u70bc<\/span>\u00a0<em id=\"publish_time\" class=\"rich_media_meta rich_media_meta_text\">\u4eca\u5929<\/em><\/div>\n<div id=\"js_tags\" class=\"article-tag__list single-tag__wrp js_single\" data-len=\"1\">\n<div class=\"article-tag-card__left\">\n<div class=\"article-tag-card__title\">\u6536\u5f55\u4e8e\u8bdd\u9898<\/div>\n<div class=\"article-tag__item-wrp no-active js_tag\" data-url=\"https:\/\/mp.weixin.qq.com\/mp\/appmsgalbum?__biz=MjM5Njg5NDgwNA==&amp;action=getalbum&amp;album_id=1532487451997454337#wechat_redirect\" data-tag_id=\"\" data-album_id=\"1532487451997454337\"><span class=\"article-tag__item\">#\u5f00\u53d1\u5185\u529f\u4fee\u70bc\u4e4b\u7f51\u7edc\u7bc7<\/span><\/div>\n<\/div>\n<div class=\"article-tag-card__right\">12\u4e2a<\/div>\n<\/div>\n<div id=\"js_content\" class=\"rich_media_content \">\n<section class=\"js_darkmode__0\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-website=\"https:\/\/www.mdnice.com\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-style=\"font-size: 16px; color: black; line-height: 1.6; letter-spacing: 0px; word-break: break-word; overflow-wrap: break-word; text-align: left; font-family: Optima-Regular, Optima, PingFangSC-light, PingFangTC-light, &quot;PingFang SC&quot;, Cambria, Cochin, Georgia, Times, &quot;Times New Roman&quot;, serif;\">\n<section data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><span class=\"js_darkmode__2\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"color: rgb(66, 75, 93); letter-spacing: 1px; word-spacing: 3px;\">\u5927\u5bb6\u597d\uff0c\u6211\u662f\u98de\u54e5!<\/span><\/section>\n<p class=\"js_darkmode__3\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u534a\u5e74\u524d\u6211\u4ee5\u6e90\u7801\u7684\u65b9\u5f0f\u63cf\u8ff0\u4e86\u7f51\u7edc\u5305\u7684\u63a5\u6536\u8fc7\u7a0b\u3002\u4e4b\u540e\u4e0d\u65ad\u6709\u7c89\u4e1d\u63d0\u9192\u6211\u8fd8\u6ca1\u804a\u53d1\u9001\u8fc7\u7a0b\u5462\u3002\u597d\uff0c\u5b89\u6392\uff01<\/p>\n<p class=\"js_darkmode__4\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u5f00\u59cb\u4eca\u5929\u7684\u6587\u7ae0\u4e4b\u524d\uff0c\u6211\u5148\u6765\u8bf7\u5927\u5bb6\u601d\u8003\u51e0\u4e2a\u5c0f\u95ee\u9898\u3002<\/p>\n<ul class=\"list-paddingleft-2 js_darkmode__5\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"font-size: 15px; padding-left: 24px; color: rgb(66, 75, 93);\">\n<li data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\n<section data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u95ee1\uff1a\u6211\u4eec\u5728\u67e5\u770b\u5185\u6838\u53d1\u9001\u6570\u636e\u6d88\u8017\u7684 CPU \u65f6\uff0c\u662f\u5e94\u8be5\u770b sy \u8fd8\u662f si \uff1f<\/section>\n<\/li>\n<li data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\n<section data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u95ee2\uff1a\u4e3a\u4ec0\u4e48\u4f60\u670d\u52a1\u5668\u4e0a\u7684 \/proc\/softirqs \u91cc NET_RX \u8981\u6bd4 NET_TX \u5927\u7684\u591a\u7684\u591a\uff1f<\/section>\n<\/li>\n<li data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\n<section data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u95ee3\uff1a\u53d1\u9001\u7f51\u7edc\u6570\u636e\u7684\u65f6\u5019\u90fd\u6d89\u53ca\u5230\u54ea\u4e9b\u5185\u5b58\u62f7\u8d1d\u64cd\u4f5c\uff1f<\/section>\n<\/li>\n<\/ul>\n<p class=\"js_darkmode__6\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u8fd9\u4e9b\u95ee\u9898\u867d\u7136\u5728\u7ebf\u4e0a\u7ecf\u5e38\u770b\u5230\uff0c\u4f46\u6211\u4eec\u4f3c\u4e4e\u5f88\u5c11\u53bb\u6df1\u7a76\u3002\u5982\u679c\u771f\u7684\u80fd\u900f\u5f7b\u5730\u628a\u8fd9\u4e9b\u95ee\u9898\u7406\u89e3\u5230\u4f4d\uff0c\u6211\u4eec\u5bf9\u6027\u80fd\u7684\u638c\u63a7\u80fd\u529b\u5c06\u4f1a\u53d8\u5f97\u66f4\u5f3a\u3002<\/p>\n<p class=\"js_darkmode__7\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5e26\u7740\u8fd9\u4e09\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u5f00\u59cb\u4eca\u5929\u5bf9 Linux \u5185\u6838\u7f51\u7edc\u53d1\u9001\u8fc7\u7a0b\u7684\u6df1\u5ea6\u5256\u6790\u3002\u8fd8\u662f\u6309\u7167\u6211\u4eec\u4e4b\u524d\u7684\u4f20\u7edf\uff0c\u5148\u4ece\u4e00\u6bb5\u7b80\u5355\u7684\u4ee3\u7801\u4f5c\u4e3a\u5207\u5165\u3002\u5982\u4e0b\u4ee3\u7801\u662f\u4e00\u4e2a\u5178\u578b\u670d\u52a1\u5668\u7a0b\u5e8f\u7684\u5178\u578b\u7684\u7f29\u5fae\u4ee3\u7801\uff1a<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__9\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0main()<\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0fd\u00a0=\u00a0socket(AF_INET,\u00a0SOCK_STREAM,\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0bind(fd,\u00a0...);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0listen(fd,\u00a0...);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0cfd\u00a0=\u00a0accept(fd,\u00a0...);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__10\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u00a0\u63a5\u6536\u7528\u6237\u8bf7\u6c42<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0read(cfd,\u00a0...);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__11\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u00a0\u7528\u6237\u8bf7\u6c42\u5904\u7406<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0dosometing();\u00a0<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__12\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u00a0\u7ed9\u7528\u6237\u8fd4\u56de\u7ed3\u679c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0send(cfd,\u00a0buf,\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">sizeof<\/span>(buf),\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__13\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4eca\u5929\u6211\u4eec\u6765\u8ba8\u8bba\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u8c03\u7528 send \u4e4b\u540e\u5185\u6838\u662f\u600e\u4e48\u6837\u628a\u6570\u636e\u5305\u53d1\u9001\u51fa\u53bb\u7684\u3002\u672c\u6587\u57fa\u4e8eLinux 3.10\uff0c\u7f51\u5361\u9a71\u52a8\u91c7\u7528Intel\u7684igb\u7f51\u5361\u4e3e\u4f8b\u3002<\/p>\n<p class=\"js_darkmode__14\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\"><strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u9884\u8b66\uff1a\u672c\u6587\u5171\u6709\u4e00\u4e07\u591a\u5b57\uff0c25 \u5f20\u56fe\uff0c\u957f\u6587\u614e\u5165\uff01<\/strong><\/p>\n<section class=\"\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\">\n<div class=\"appmsg_card_context wx_profile_card js_wx_profile_card\" data-id=\"MjM5Njg5NDgwNA==\" data-isban=\"0\" data-index=\"0\">\n<div class=\"wx_profile_card_bd\">\n<div class=\"wx_profile weui-flex\">\n<div class=\"wx_profile_hd\"><img decoding=\"async\" class=\"wx_profile_avatar\" src=\"http:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqciaicnxpic7g4KKVZKSeQTzic5FoaXsQeLG979y9iaTNVPKTSO9BzSM7zXoJzibbBtEyb6Df5OTj0Yw3Q\/0?wx_fmt=png\" alt=\"\u5f00\u53d1\u5185\u529f\u4fee\u70bc\" \/><\/div>\n<div class=\"wx_profile_bd weui-flex weui-flex__item\">\n<div class=\"weui-flex__item\"><strong class=\"wx_profile_nickname\">\u5f00\u53d1\u5185\u529f\u4fee\u70bc<\/strong><\/p>\n<div class=\"wx_profile_desc\">\u98de\u54e5\u6709\u9e45\u5382\u3001\u641c\u72d7 10 \u5e74\u591a\u7684\u5f00\u53d1\u5de5\u4f5c\u7ecf\u9a8c\u3002\u901a\u8fc7\u672c\u53f7\uff0c\u6211\u628a\u591a\u5e74\u4e2d\u5bf9\u4e8e\u6027\u80fd\u7684\u4e00\u4e9b\u6df1\u5ea6\u601d\u8003\u5206\u4eab\u7ed9\u5927\u5bb6\u3002<\/div>\n<div id=\"js_profile_desc\" class=\"wx_profile_tips\"><span id=\"js_profile_article\" class=\"wx_profile_tips_meta\">57\u7bc7\u539f\u521b\u5185\u5bb9<\/span><\/div>\n<\/div>\n<p><i class=\"weui-icon-arrow\"><\/i><\/div>\n<\/div>\n<\/div>\n<div class=\"wx_profile_card_ft\">\u516c\u4f17\u53f7<\/div>\n<\/div>\n<\/section>\n<h2 data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><span data-darkmode-color-16207924526368=\"rgb(255,255,255)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(255,255,255)\" data-darkmode-bgcolor-16207924526368=\"rgb(231, 100, 43)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(231, 100, 43)\">\u4e00\u3001Linux \u7f51\u7edc\u53d1\u9001\u8fc7\u7a0b\u603b\u89c8<\/span><\/h2>\n<p class=\"js_darkmode__16\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u89c9\u5f97\u770b Linux \u6e90\u7801\u6700\u91cd\u8981\u7684\u662f\u5f97\u6709\u6574\u4f53\u4e0a\u7684\u628a\u63e1\uff0c\u800c\u4e0d\u662f\u4e00\u5f00\u59cb\u5c31\u9677\u5165\u5404\u79cd\u7ec6\u8282\u3002<\/p>\n<p class=\"js_darkmode__17\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u8fd9\u91cc\u5148\u7ed9\u5927\u5bb6\u51c6\u5907\u4e86\u4e00\u4e2a\u603b\u7684\u6d41\u7a0b\u56fe\uff0c\u7b80\u5355\u9610\u8ff0\u4e0b send \u53d1\u9001\u4e86\u7684\u6570\u636e\u662f\u5982\u4f55\u4e00\u6b65\u4e00\u6b65\u88ab\u53d1\u9001\u5230\u7f51\u5361\u7684\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages img_loading\" src=\"data:image\/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGBgAAAABQABh6FO1AAAAABJRU5ErkJggg==\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.9399141630901288\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNX1x1UEBIyveezFWoBqbfqcQO85kXF1L3YvcIS86ianMkm25OeWHg9sw\/640?wx_fmt=png\" data-type=\"png\" data-w=\"466\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" \/><\/p>\n<p class=\"js_darkmode__18\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u8fd9\u5e45\u56fe\u4e2d\uff0c\u6211\u4eec\u770b\u5230\u7528\u6237\u6570\u636e\u88ab\u62f7\u8d1d\u5230\u5185\u6838\u6001\uff0c\u7136\u540e\u7ecf\u8fc7\u534f\u8bae\u6808\u5904\u7406\u540e\u8fdb\u5165\u5230\u4e86 RingBuffer \u4e2d\u3002\u968f\u540e\u7f51\u5361\u9a71\u52a8\u771f\u6b63\u5c06\u6570\u636e\u53d1\u9001\u4e86\u51fa\u53bb\u3002\u5f53\u53d1\u9001\u5b8c\u6210\u7684\u65f6\u5019\uff0c\u662f\u901a\u8fc7\u786c\u4e2d\u65ad\u6765\u901a\u77e5 CPU\uff0c\u7136\u540e\u6e05\u7406 RingBuffer\u3002<\/p>\n<p class=\"js_darkmode__19\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u56e0\u4e3a\u6587\u7ae0\u540e\u9762\u8981\u8fdb\u5165\u6e90\u7801\uff0c\u6240\u4ee5\u6211\u4eec\u518d\u4ece\u6e90\u7801\u7684\u89d2\u5ea6\u7ed9\u51fa\u4e00\u4e2a\u6d41\u7a0b\u56fe\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNN5ndOR5DB5xHMjaV4XlJnY9iajk0ia1nAsm7CDzBrUDNzuiaJy4wPSL3Q\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"3.65283540802213\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNN5ndOR5DB5xHMjaV4XlJnY9iajk0ia1nAsm7CDzBrUDNzuiaJy4wPSL3Q\/640?wx_fmt=png\" data-type=\"png\" data-w=\"723\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__20\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u867d\u7136\u6570\u636e\u8fd9\u65f6\u5df2\u7ecf\u53d1\u9001\u5b8c\u6bd5\uff0c\u4f46\u662f\u5176\u5b9e\u8fd8\u6709\u4e00\u4ef6\u91cd\u8981\u7684\u4e8b\u60c5\u6ca1\u6709\u505a\uff0c\u90a3\u5c31\u662f\u91ca\u653e\u7f13\u5b58\u961f\u5217\u7b49\u5185\u5b58\u3002<\/p>\n<p class=\"js_darkmode__21\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u90a3\u5185\u6838\u662f\u5982\u4f55\u77e5\u9053\u4ec0\u4e48\u65f6\u5019\u624d\u80fd\u91ca\u653e\u5185\u5b58\u7684\u5462\uff0c\u5f53\u7136\u662f\u7b49\u7f51\u7edc\u53d1\u9001\u5b8c\u6bd5\u4e4b\u540e\u3002\u7f51\u5361\u5728\u53d1\u9001\u5b8c\u6bd5\u7684\u65f6\u5019\uff0c\u4f1a\u7ed9 CPU \u53d1\u9001\u4e00\u4e2a\u786c\u4e2d\u65ad\u6765\u901a\u77e5 CPU\u3002\u66f4\u5b8c\u6574\u7684\u6d41\u7a0b\u770b\u56fe\uff1a<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNHO50EyzavTV4lzNMXbgmqXBzwibOH4fe4SEpTMYX93nHYf1MUDiaAPgw\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"1.525874125874126\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNHO50EyzavTV4lzNMXbgmqXBzwibOH4fe4SEpTMYX93nHYf1MUDiaAPgw\/640?wx_fmt=png\" data-type=\"png\" data-w=\"715\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__22\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6ce8\u610f\uff0c\u6211\u4eec\u4eca\u5929\u7684\u4e3b\u9898\u867d\u7136\u662f\u53d1\u9001\u6570\u636e\uff0c\u4f46\u662f\u786c\u4e2d\u65ad\u6700\u7ec8\u89e6\u53d1\u7684\u8f6f\u4e2d\u65ad\u5374\u662f NET_RX_SOFTIRQ\uff0c\u800c\u5e76\u4e0d\u662f NET_TX_SOFTIRQ \uff01\uff01\uff01\uff08T \u662f transmit \u7684\u7f29\u5199\uff0cR \u8868\u793a receive\uff09<\/p>\n<p class=\"js_darkmode__23\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\"><strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u610f\u4e0d\u610f\u5916\uff0c\u60ca\u4e0d\u60ca\u559c\uff1f\uff1f\uff1f<\/strong><\/p>\n<p class=\"js_darkmode__24\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6240\u4ee5\u8fd9\u5c31\u662f\u5f00\u7bc7\u95ee\u9898 1 \u7684\u4e00\u90e8\u5206\u7684\u539f\u56e0\uff08\u6ce8\u610f\uff0c\u8fd9\u53ea\u662f\u4e00\u90e8\u5206\u539f\u56e0\uff09\u3002<\/p>\n<blockquote class=\"js_darkmode__25\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(106, 115, 125)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(106, 115, 125)\" data-darkmode-bgcolor-16207924526368=\"rgb(25, 25, 25)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(255, 255, 255)\" data-style=\"font-size: 0.9em; overflow: auto; color: rgb(106, 115, 125); padding: 10px 10px 10px 20px; margin: 0px 8px; border-width: initial; border-style: none; border-color: initial; background: rgb(255, 255, 255); box-shadow: rgba(0, 0, 0, 0.16) 0px 1px 2px -2px, rgba(0, 0, 0, 0.12) 0px 3px 6px 0px, rgba(0, 0, 0, 0.09) 0px 5px 12px 4px;\">\n<p class=\"js_darkmode__26\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(106, 115, 125)|rgb(66, 75, 93)\" data-darkmode-bgcolor-16207924526368=\"rgb(25, 25, 25)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(255, 255, 255)\" data-style=\"padding-top: 8px; padding-bottom: 8px; word-spacing: 3px; letter-spacing: 1px; font-size: 14px; color: rgb(66, 75, 93); line-height: 24px;\">\u95ee1\uff1a\u5728\u670d\u52a1\u5668\u4e0a\u67e5\u770b \/proc\/softirqs\uff0c\u4e3a\u4ec0\u4e48 NET_RX \u8981\u6bd4 NET_TX \u5927\u7684\u591a\u7684\u591a\uff1f<\/p>\n<\/blockquote>\n<p class=\"js_darkmode__27\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4f20\u8f93\u5b8c\u6210\u6700\u7ec8\u4f1a\u89e6\u53d1 NET_RX\uff0c\u800c\u4e0d\u662f NET_TX\u3002\u6240\u4ee5\u81ea\u7136\u4f60\u89c2\u6d4b \/proc\/softirqs \u4e5f\u5c31\u80fd\u770b\u5230 NET_RX \u66f4\u591a\u4e86\u3002<\/p>\n<p class=\"js_darkmode__28\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u597d\uff0c\u73b0\u5728\u4f60\u5df2\u7ecf\u5bf9\u5185\u6838\u662f\u600e\u4e48\u53d1\u9001\u7f51\u7edc\u5305\u7684\u6709\u4e00\u4e2a\u5168\u5c40\u4e0a\u7684\u628a\u63e1\u4e86\u3002\u4e0d\u8981\u5f97\u610f\uff0c\u6211\u4eec\u9700\u8981\u4e86\u89e3\u7684\u7ec6\u8282\u624d\u662f\u66f4\u6709\u4ef7\u503c\u7684\u5730\u65b9\uff0c\u8ba9\u6211\u4eec\u7ee7\u7eed\uff01\uff01<\/p>\n<h2 data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><span data-darkmode-color-16207924526368=\"rgb(255,255,255)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(255,255,255)\" data-darkmode-bgcolor-16207924526368=\"rgb(231, 100, 43)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(231, 100, 43)\">\u4e8c\u3001\u7f51\u5361\u542f\u52a8\u51c6\u5907<\/span><\/h2>\n<p class=\"js_darkmode__29\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u73b0\u5728\u7684\u670d\u52a1\u5668\u4e0a\u7684\u7f51\u5361\u4e00\u822c\u90fd\u662f\u652f\u6301\u591a\u961f\u5217\u7684\u3002\u6bcf\u4e00\u4e2a\u961f\u5217\u4e0a\u90fd\u662f\u7531\u4e00\u4e2a RingBuffer \u8868\u793a\u7684\uff0c\u5f00\u542f\u4e86\u591a\u961f\u5217\u4ee5\u540e\u7684\u7684\u7f51\u5361\u5c31\u4f1a\u5bf9\u5e94\u6709\u591a\u4e2a RingBuffer\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNdydA6qUibicwic6KVIO5L9v0ZqYx7WRbnDK7NbylJiaFruhSNRrNDcklLQ\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.3608521970705726\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNdydA6qUibicwic6KVIO5L9v0ZqYx7WRbnDK7NbylJiaFruhSNRrNDcklLQ\/640?wx_fmt=png\" data-type=\"png\" data-w=\"751\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__30\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7f51\u5361\u5728\u542f\u52a8\u65f6\u6700\u91cd\u8981\u7684\u4efb\u52a1\u4e4b\u4e00\u5c31\u662f\u5206\u914d\u548c\u521d\u59cb\u5316 RingBuffer\uff0c\u7406\u89e3\u4e86 RingBuffer \u5c06\u4f1a\u975e\u5e38\u6709\u52a9\u4e8e\u540e\u9762\u6211\u4eec\u638c\u63e1\u53d1\u9001\u3002\u56e0\u4e3a\u4eca\u5929\u7684\u4e3b\u9898\u662f\u53d1\u9001\uff0c\u6240\u4ee5\u5c31\u4ee5\u4f20\u8f93\u961f\u5217\u4e3a\u4f8b\uff0c\u6211\u4eec\u6765\u770b\u4e0b\u7f51\u5361\u542f\u52a8\u65f6\u5206\u914d RingBuffer \u7684\u5b9e\u9645\u8fc7\u7a0b\u3002<\/p>\n<p class=\"js_darkmode__31\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u7f51\u5361\u542f\u52a8\u7684\u65f6\u5019\uff0c\u4f1a\u8c03\u7528\u5230 __igb_open \u51fd\u6570\uff0cRingBuffer \u5c31\u662f\u5728\u8fd9\u91cc\u5206\u914d\u7684\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__33\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__34\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0drivers\/net\/ethernet\/intel\/igb\/igb_main.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int<\/span>\u00a0__igb_open(struct\u00a0net_device\u00a0*netdev,\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">bool<\/span>\u00a0resuming)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0igb_adapter\u00a0*adapter\u00a0=\u00a0netdev_priv(netdev);<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__35\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5206\u914d\u4f20\u8f93\u63cf\u8ff0\u7b26\u6570\u7ec4<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0err\u00a0=\u00a0igb_setup_all_tx_resources(adapter);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__36\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5206\u914d\u63a5\u6536\u63cf\u8ff0\u7b26\u6570\u7ec4<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0err\u00a0=\u00a0igb_setup_all_rx_resources(adapter);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__37\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5f00\u542f\u5168\u90e8\u961f\u5217<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0netif_tx_start_all_queues(netdev);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__38\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u4e0a\u9762 __igb_open \u51fd\u6570\u8c03\u7528 igb_setup_all_tx_resources \u5206\u914d\u6240\u6709\u7684\u4f20\u8f93 RingBuffer, \u8c03\u7528 igb_setup_all_rx_resources \u521b\u5efa\u6240\u6709\u7684\u63a5\u6536 RingBuffer\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__40\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__41\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0drivers\/net\/ethernet\/intel\/igb\/igb_main.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0int\u00a0igb_setup_all_tx_resources(struct\u00a0igb_adapter\u00a0*adapter)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__42\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u6709\u51e0\u4e2a\u961f\u5217\u5c31\u6784\u9020\u51e0\u4e2a\u00a0RingBuffer<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">for<\/span>\u00a0(i\u00a0=\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>;\u00a0i\u00a0&lt;\u00a0adapter-&gt;num_tx_queues;\u00a0i++)\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0igb_setup_tx_resources(adapter-&gt;tx_ring[i]);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__43\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u771f\u6b63\u7684 RingBuffer \u6784\u9020\u8fc7\u7a0b\u662f\u5728 igb_setup_tx_resources \u4e2d\u5b8c\u6210\u7684\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__45\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__46\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0drivers\/net\/ethernet\/intel\/igb\/igb_main.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0igb_setup_tx_resources(struct\u00a0igb_ring\u00a0*tx_ring)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__47\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/1.\u7533\u8bf7\u00a0igb_tx_buffer\u00a0\u6570\u7ec4\u5185\u5b58<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0size\u00a0=\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">sizeof<\/span>(struct\u00a0igb_tx_buffer)\u00a0*\u00a0tx_ring-&gt;count;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0tx_ring-&gt;tx_buffer_info\u00a0=\u00a0vzalloc(size);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__48\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/2.\u7533\u8bf7\u00a0e1000_adv_tx_desc\u00a0DMA\u00a0\u6570\u7ec4\u5185\u5b58<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0tx_ring-&gt;size\u00a0=\u00a0tx_ring-&gt;count\u00a0*\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">sizeof<\/span>(<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">union<\/span>\u00a0e1000_adv_tx_desc);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0tx_ring-&gt;size\u00a0=\u00a0ALIGN(tx_ring-&gt;size,\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">4096<\/span>);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0tx_ring-&gt;desc\u00a0=\u00a0dma_alloc_coherent(dev,\u00a0tx_ring-&gt;size,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&amp;tx_ring-&gt;dma,\u00a0GFP_KERNEL);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__49\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/3.\u521d\u59cb\u5316\u961f\u5217\u6210\u5458<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0tx_ring-&gt;next_to_use\u00a0=\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0tx_ring-&gt;next_to_clean\u00a0=\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__50\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4ece\u4e0a\u8ff0\u6e90\u7801\u53ef\u4ee5\u770b\u5230\uff0c\u5b9e\u9645\u4e0a\u4e00\u4e2a RingBuffer \u7684\u5185\u90e8\u4e0d\u4ec5\u4ec5\u662f\u4e00\u4e2a\u73af\u5f62\u961f\u5217\u6570\u7ec4\uff0c\u800c\u662f\u6709\u4e24\u4e2a\u3002<\/p>\n<p class=\"js_darkmode__51\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">1\uff09igb_tx_buffer \u6570\u7ec4\uff1a\u8fd9\u4e2a\u6570\u7ec4\u662f\u5185\u6838\u4f7f\u7528\u7684\uff0c\u901a\u8fc7 vzalloc \u7533\u8bf7\u7684\u3002<br data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" \/>2\uff09e1000_adv_tx_desc \u6570\u7ec4\uff1a\u8fd9\u4e2a\u6570\u7ec4\u662f\u7f51\u5361\u786c\u4ef6\u4f7f\u7528\u7684\uff0c\u786c\u4ef6\u662f\u53ef\u4ee5\u901a\u8fc7 DMA \u76f4\u63a5\u8bbf\u95ee\u8fd9\u5757\u5185\u5b58\uff0c\u901a\u8fc7 dma_alloc_coherent \u5206\u914d\u3002<\/p>\n<p class=\"js_darkmode__52\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u8fd9\u4e2a\u65f6\u5019\u5b83\u4eec\u4e4b\u95f4\u8fd8\u6ca1\u6709\u5565\u8054\u7cfb\u3002\u5c06\u6765\u5728\u53d1\u9001\u7684\u65f6\u5019\uff0c\u8fd9\u4e24\u4e2a\u73af\u5f62\u6570\u7ec4\u4e2d\u76f8\u540c\u4f4d\u7f6e\u7684\u6307\u9488\u5c06\u90fd\u5c06\u6307\u5411\u540c\u4e00\u4e2a skb\u3002\u8fd9\u6837\uff0c\u5185\u6838\u548c\u786c\u4ef6\u5c31\u80fd\u5171\u540c\u8bbf\u95ee\u540c\u6837\u7684\u6570\u636e\u4e86\uff0c\u5185\u6838\u5f80 skb \u91cc\u5199\u6570\u636e\uff0c\u7f51\u5361\u786c\u4ef6\u8d1f\u8d23\u53d1\u9001\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNshNxj7ESgnlCGrw6pp71S9AmZKBZNzibib8HyZ5BMOlO1noHLCDImBUg\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.4416243654822335\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNshNxj7ESgnlCGrw6pp71S9AmZKBZNzibib8HyZ5BMOlO1noHLCDImBUg\/640?wx_fmt=png\" data-type=\"png\" data-w=\"591\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__53\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6700\u540e\u8c03\u7528 netif_tx_start_all_queues \u5f00\u542f\u961f\u5217\u3002\u53e6\u5916\uff0c\u5bf9\u4e8e\u786c\u4e2d\u65ad\u7684\u5904\u7406\u51fd\u6570 igb_msix_ring \u5176\u5b9e\u4e5f\u662f\u5728 __igb_open \u4e2d\u6ce8\u518c\u7684\u3002<\/p>\n<h2 data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><span data-darkmode-color-16207924526368=\"rgb(255,255,255)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(255,255,255)\" data-darkmode-bgcolor-16207924526368=\"rgb(231, 100, 43)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(231, 100, 43)\">\u4e09\u3001accept \u521b\u5efa\u65b0 socket<\/span><\/h2>\n<p class=\"js_darkmode__54\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u53d1\u9001\u6570\u636e\u4e4b\u524d\uff0c\u6211\u4eec\u5f80\u5f80\u8fd8\u9700\u8981\u4e00\u4e2a\u5df2\u7ecf\u5efa\u7acb\u597d\u8fde\u63a5\u7684 socket\u3002<\/p>\n<p class=\"js_darkmode__55\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u4eec\u5c31\u4ee5\u5f00\u7bc7\u670d\u52a1\u5668\u7f29\u5fae\u6e90\u4ee3\u7801\u4e2d\u63d0\u5230\u7684 accept \u4e3a\u4f8b\uff0c\u5f53 accept \u4e4b\u540e\uff0c\u8fdb\u7a0b\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 socket \u51fa\u6765\uff0c\u7136\u540e\u628a\u5b83\u653e\u5230\u5f53\u524d\u8fdb\u7a0b\u7684\u6253\u5f00\u6587\u4ef6\u5217\u8868\u4e2d\uff0c\u4e13\u95e8\u7528\u4e8e\u548c\u5bf9\u5e94\u7684\u5ba2\u6237\u7aef\u901a\u4fe1\u3002<\/p>\n<p class=\"js_darkmode__56\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5047\u8bbe\u670d\u52a1\u5668\u8fdb\u7a0b\u901a\u8fc7 accept \u548c\u5ba2\u6237\u7aef\u5efa\u7acb\u4e86\u4e24\u6761\u8fde\u63a5\uff0c\u6211\u4eec\u6765\u7b80\u5355\u770b\u4e00\u4e0b\u8fd9\u4e24\u6761\u8fde\u63a5\u548c\u8fdb\u7a0b\u7684\u5173\u8054\u5173\u7cfb\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNf9vlJUUicDicIQQRX6Gm7sibzKTxeCPeXLkmNNszwdy512ny7LFmdYhXw\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.3532219570405728\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNf9vlJUUicDicIQQRX6Gm7sibzKTxeCPeXLkmNNszwdy512ny7LFmdYhXw\/640?wx_fmt=png\" data-type=\"png\" data-w=\"838\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__57\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5176\u4e2d\u4ee3\u8868\u4e00\u6761\u8fde\u63a5\u7684 socket \u5185\u6838\u5bf9\u8c61\u66f4\u4e3a\u5177\u4f53\u4e00\u70b9\u7684\u7ed3\u6784\u56fe\u5982\u4e0b\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNRlsujDHEyc56Miaicdz52ibMTZk9JRv6RH8ibk7ZoommWkyVic9jhl8NaJA\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.7654155495978552\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNRlsujDHEyc56Miaicdz52ibMTZk9JRv6RH8ibk7ZoommWkyVic9jhl8NaJA\/640?wx_fmt=png\" data-type=\"png\" data-w=\"746\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__58\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4e3a\u4e86\u907f\u514d\u55a7\u5bbe\u593a\u4e3b\uff0caccept \u8be6\u7ec6\u7684\u6e90\u7801\u8fc7\u7a0b\u8fd9\u91cc\u5c31\u4e0d\u4ecb\u7ecd\u4e86\uff0c\u611f\u5174\u8da3\u8bf7\u53c2\u8003\u00a0<a href=\"https:\/\/mp.weixin.qq.com\/s?__biz=MjM5Njg5NDgwNA==&amp;mid=2247484905&amp;idx=1&amp;sn=a74ed5d7551c4fb80a8abe057405ea5e&amp;scene=21#wechat_redirect\" data-linktype=\"2\" data-darkmode-color-16207924526368=\"rgb(235, 97, 97)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)|rgb(235, 97, 97)\">\u300a\u56fe\u89e3 | \u6df1\u5165\u63ed\u79d8 epoll \u662f\u5982\u4f55\u5b9e\u73b0 IO \u591a\u8def\u590d\u7528\u7684\uff01\u300b<\/a>\u3002\u4e00\u6587\u4e2d\u7684\u7b2c\u4e00\u90e8\u5206\u3002<\/p>\n<p class=\"js_darkmode__59\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4eca\u5929\u6211\u4eec\u8fd8\u662f\u628a\u91cd\u70b9\u653e\u5230\u6570\u636e\u53d1\u9001\u8fc7\u7a0b\u4e0a\u3002<\/p>\n<h2 data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><span data-darkmode-color-16207924526368=\"rgb(255,255,255)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(255,255,255)\" data-darkmode-bgcolor-16207924526368=\"rgb(231, 100, 43)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(231, 100, 43)\">\u56db\u3001\u53d1\u9001\u6570\u636e\u771f\u6b63\u5f00\u59cb<\/span><\/h2>\n<h3 class=\"js_darkmode__60\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"margin-top: 24px; margin-bottom: 12px; font-weight: bold; font-size: 18px; color: rgb(66, 75, 93);\">4.1 send \u7cfb\u7edf\u8c03\u7528\u5b9e\u73b0<\/h3>\n<p class=\"js_darkmode__61\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">send \u7cfb\u7edf\u8c03\u7528\u7684\u6e90\u7801\u4f4d\u4e8e\u6587\u4ef6 net\/socket.c \u4e2d\u3002\u5728\u8fd9\u4e2a\u7cfb\u7edf\u8c03\u7528\u91cc\uff0c\u5185\u90e8\u5176\u5b9e\u771f\u6b63\u4f7f\u7528\u7684\u662f sendto \u7cfb\u7edf\u8c03\u7528\u3002\u6574\u4e2a\u8c03\u7528\u94fe\u6761\u867d\u7136\u4e0d\u77ed\uff0c\u4f46\u5176\u5b9e\u4e3b\u8981\u53ea\u5e72\u4e86\u4e24\u4ef6\u7b80\u5355\u7684\u4e8b\u60c5\uff0c<\/p>\n<ul class=\"list-paddingleft-2 js_darkmode__62\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"font-size: 15px; padding-left: 24px; color: rgb(66, 75, 93);\">\n<li data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\n<section data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u7b2c\u4e00\u662f\u5728\u5185\u6838\u4e2d\u628a\u771f\u6b63\u7684 socket \u627e\u51fa\u6765\uff0c\u5728\u8fd9\u4e2a\u5bf9\u8c61\u91cc\u8bb0\u5f55\u7740\u5404\u79cd\u534f\u8bae\u6808\u7684\u51fd\u6570\u5730\u5740\u3002<\/section>\n<\/li>\n<li data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\n<section data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u7b2c\u4e8c\u662f\u6784\u9020\u4e00\u4e2a struct msghdr \u5bf9\u8c61\uff0c\u628a\u7528\u6237\u4f20\u5165\u7684\u6570\u636e\uff0c\u6bd4\u5982 buffer\u5730\u5740\u3001\u6570\u636e\u957f\u5ea6\u5565\u7684\uff0c\u7edf\u7edf\u90fd\u88c5\u8fdb\u53bb.<\/section>\n<\/li>\n<\/ul>\n<p class=\"js_darkmode__63\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5269\u4e0b\u7684\u4e8b\u60c5\u5c31\u4ea4\u7ed9\u4e0b\u4e00\u5c42\uff0c\u534f\u8bae\u6808\u91cc\u7684\u51fd\u6570 inet_sendmsg \u4e86\uff0c\u5176\u4e2d inet_sendmsg \u51fd\u6570\u7684\u5730\u5740\u662f\u901a\u8fc7 socket \u5185\u6838\u5bf9\u8c61\u91cc\u7684 ops \u6210\u5458\u627e\u5230\u7684\u3002\u5927\u81f4\u6d41\u7a0b\u5982\u56fe\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages img_loading\" src=\"data:image\/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGBgAAAABQABh6FO1AAAAABJRU5ErkJggg==\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.6823956442831216\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNVf6gq2hiawPInMbFBzuKPB0yediaicpl4nsKwicpYj4JUWFFPibXZzIGL5A\/640?wx_fmt=png\" data-type=\"png\" data-w=\"551\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" \/><\/p>\n<p class=\"js_darkmode__64\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6709\u4e86\u4e0a\u9762\u7684\u4e86\u89e3\uff0c\u6211\u4eec\u518d\u770b\u8d77\u6e90\u7801\u5c31\u8981\u5bb9\u6613\u8bb8\u591a\u4e86\u3002\u6e90\u7801\u5982\u4e0b\uff1a<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__66\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__67\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/socket.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>SYSCALL_DEFINE4(send,\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int<\/span>,\u00a0fd,\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">void<\/span>\u00a0__user\u00a0*,\u00a0buff,\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">size_t<\/span>,\u00a0len,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">unsigned<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int<\/span>,\u00a0flags)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0sys_sendto(fd,\u00a0buff,\u00a0len,\u00a0flags,\u00a0<span data-darkmode-color-16207924526368=\"rgb(86, 182, 194)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(86, 182, 194)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">NULL<\/span>,\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>SYSCALL_DEFINE6(......)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__68\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/1.\u6839\u636e\u00a0fd\u00a0\u67e5\u627e\u5230\u00a0socket<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0sock\u00a0=\u00a0sockfd_lookup_light(fd,\u00a0&amp;err,\u00a0&amp;fput_needed);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__69\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/2.\u6784\u9020\u00a0msghdr<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0msghdr\u00a0msg;<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0iovec\u00a0iov;<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0iov.iov_base\u00a0=\u00a0buff;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0iov.iov_len\u00a0=\u00a0len;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0msg.msg_iovlen\u00a0=\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">1<\/span>;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0msg.msg_iov\u00a0=\u00a0&amp;iov;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0msg.msg_flags\u00a0=\u00a0flags;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__70\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/3.\u53d1\u9001\u6570\u636e<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0sock_sendmsg(sock,\u00a0&amp;msg,\u00a0len);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__71\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4ece\u6e90\u7801\u53ef\u4ee5\u770b\u5230\uff0c\u6211\u4eec\u5728\u7528\u6237\u6001\u4f7f\u7528\u7684 send \u51fd\u6570\u548c sendto \u51fd\u6570\u5176\u5b9e\u90fd\u662f sendto \u7cfb\u7edf\u8c03\u7528\u5b9e\u73b0\u7684\u3002send \u53ea\u662f\u4e3a\u4e86\u65b9\u4fbf\uff0c\u5c01\u88c5\u51fa\u6765\u7684\u4e00\u4e2a\u66f4\u6613\u4e8e\u8c03\u7528\u7684\u65b9\u5f0f\u800c\u5df2\u3002<\/p>\n<p class=\"js_darkmode__72\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728 sendto \u7cfb\u7edf\u8c03\u7528\u91cc\uff0c\u9996\u5148\u6839\u636e\u7528\u6237\u4f20\u8fdb\u6765\u7684 socket \u53e5\u67c4\u53f7\u6765\u67e5\u627e\u771f\u6b63\u7684 socket \u5185\u6838\u5bf9\u8c61\u3002\u63a5\u7740\u628a\u7528\u6237\u8bf7\u6c42\u7684 buff\u3001len\u3001flag \u7b49\u53c2\u6570\u90fd\u7edf\u7edf\u6253\u5305\u5230\u4e00\u4e2a struct msghdr \u5bf9\u8c61\u4e2d\u3002<\/p>\n<p class=\"js_darkmode__73\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u63a5\u7740\u8c03\u7528\u4e86 sock_sendmsg =&gt; __sock_sendmsg ==&gt; \u00a0__sock_sendmsg_nosec\u3002\u5728__sock_sendmsg_nosec \u4e2d\uff0c\u8c03\u7528\u5c06\u4f1a\u7531\u7cfb\u7edf\u8c03\u7528\u8fdb\u5165\u5230\u534f\u8bae\u6808\uff0c\u6211\u4eec\u6765\u770b\u5b83\u7684\u6e90\u7801\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__75\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__76\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/socket.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">inline<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int<\/span>\u00a0__sock_sendmsg_nosec(...)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0sock-&gt;ops-&gt;sendmsg(iocb,\u00a0sock,\u00a0msg,\u00a0size);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__77\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u901a\u8fc7\u7b2c\u4e09\u8282\u91cc\u7684 socket \u5185\u6838\u5bf9\u8c61\u7ed3\u6784\u56fe\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u8fd9\u91cc\u8c03\u7528\u7684\u662f sock-&gt;ops-&gt;sendmsg \u5b9e\u9645\u6267\u884c\u7684\u662f inet_sendmsg\u3002\u8fd9\u4e2a\u51fd\u6570\u662f AF_INET \u534f\u8bae\u65cf\u63d0\u4f9b\u7684\u901a\u7528\u53d1\u9001\u51fd\u6570\u3002<\/p>\n<h3 class=\"js_darkmode__78\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"margin-top: 24px; margin-bottom: 12px; font-weight: bold; font-size: 18px; color: rgb(66, 75, 93);\">4.2 \u4f20\u8f93\u5c42\u5904\u7406<\/h3>\n<h4 class=\"js_darkmode__79\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"margin-top: 24px; margin-bottom: 12px; font-weight: bold; color: rgb(66, 75, 93);\">1\uff09\u4f20\u8f93\u5c42\u62f7\u8d1d<\/h4>\n<p class=\"js_darkmode__80\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u8fdb\u5165\u5230\u534f\u8bae\u6808 inet_sendmsg \u4ee5\u540e\uff0c\u5185\u6838\u63a5\u7740\u4f1a\u627e\u5230 socket \u4e0a\u7684\u5177\u4f53\u534f\u8bae\u53d1\u9001\u51fd\u6570\u3002\u5bf9\u4e8e TCP \u534f\u8bae\u6765\u8bf4\uff0c\u90a3\u5c31\u662f tcp_sendmsg\uff08\u540c\u6837\u4e5f\u662f\u901a\u8fc7 socket \u5185\u6838\u5bf9\u8c61\u627e\u5230\u7684\uff09\u3002<\/p>\n<p class=\"js_darkmode__81\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c\u5185\u6838\u4f1a\u7533\u8bf7\u4e00\u4e2a\u5185\u6838\u6001\u7684 skb \u5185\u5b58\uff0c\u5c06\u7528\u6237\u5f85\u53d1\u9001\u7684\u6570\u636e\u62f7\u8d1d\u8fdb\u53bb\u3002\u6ce8\u610f\u8fd9\u4e2a\u65f6\u5019\u4e0d\u4e00\u5b9a\u4f1a\u771f\u6b63\u5f00\u59cb\u53d1\u9001\uff0c\u5982\u679c\u6ca1\u6709\u8fbe\u5230\u53d1\u9001\u6761\u4ef6\u7684\u8bdd\u5f88\u53ef\u80fd\u8fd9\u6b21\u8c03\u7528\u76f4\u63a5\u5c31\u8fd4\u56de\u4e86\u3002\u5927\u6982\u8fc7\u7a0b\u5982\u56fe\uff1a<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZN02G9vIU8FIBvo1gkvLKQt1w8HBbupcpW28g7qmibEicVFbAISSnoP77g\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.644808743169399\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZN02G9vIU8FIBvo1gkvLKQt1w8HBbupcpW28g7qmibEicVFbAISSnoP77g\/640?wx_fmt=png\" data-type=\"png\" data-w=\"549\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__82\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u4eec\u6765\u770b inet_sendmsg \u51fd\u6570\u7684\u6e90\u7801\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__84\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__85\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/af_inet.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0inet_sendmsg(......)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0sk-&gt;sk_prot-&gt;sendmsg(iocb,\u00a0sk,\u00a0msg,\u00a0size);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__86\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\u4f1a\u8c03\u7528\u5230\u5177\u4f53\u534f\u8bae\u7684\u53d1\u9001\u51fd\u6570\u3002\u540c\u6837\u53c2\u8003\u7b2c\u4e09\u8282\u91cc\u7684 socket \u5185\u6838\u5bf9\u8c61\u7ed3\u6784\u56fe\uff0c\u6211\u4eec\u770b\u5230\u5bf9\u4e8e TCP \u534f\u8bae\u4e0b\u7684 socket \u6765\u8bf4\uff0c\u6765\u8bf4 sk-&gt;sk_prot-&gt;sendmsg \u6307\u5411\u7684\u662f tcp_sendmsg\uff08\u5bf9\u4e8e UPD \u6765\u8bf4\u662f udp_sendmsg\uff09\u3002<\/p>\n<p class=\"js_darkmode__87\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">tcp_sendmsg \u8fd9\u4e2a\u51fd\u6570\u6bd4\u8f83\u957f\uff0c\u6211\u4eec\u5206\u591a\u6b21\u6765\u770b\u5b83\u3002\u5148\u770b\u8fd9\u4e00\u6bb5<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__89\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__90\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/tcp.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0tcp_sendmsg(...)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">while<\/span>(...){<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">while<\/span>(...){<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span class=\"js_darkmode__91\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u83b7\u53d6\u53d1\u9001\u961f\u5217<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0skb\u00a0=\u00a0tcp_write_queue_tail(sk);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span class=\"js_darkmode__92\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u7533\u8bf7skb\u00a0\u5e76\u62f7\u8d1d<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__94\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__95\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0include\/net\/tcp.h<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0inline\u00a0struct\u00a0sk_buff\u00a0*tcp_write_queue_tail(const\u00a0struct\u00a0sock\u00a0*sk)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0skb_peek_tail(&amp;sk-&gt;sk_write_queue);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__96\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7406\u89e3\u5bf9 socket \u8c03\u7528 tcp_write_queue_tail \u662f\u7406\u89e3\u53d1\u9001\u7684\u524d\u63d0\u3002\u5982\u4e0a\u6240\u793a\uff0c\u8fd9\u4e2a\u51fd\u6570\u662f\u5728\u83b7\u53d6 socket \u53d1\u9001\u961f\u5217\u4e2d\u7684\u6700\u540e\u4e00\u4e2a skb\u3002skb \u662f struct sk_buff \u5bf9\u8c61\u7684\u7b80\u79f0\uff0c\u7528\u6237\u7684\u53d1\u9001\u961f\u5217\u5c31\u662f\u8be5\u5bf9\u8c61\u7ec4\u6210\u7684\u4e00\u4e2a\u94fe\u8868\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages img_loading\" src=\"data:image\/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGBgAAAABQABh6FO1AAAAABJRU5ErkJggg==\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.17608695652173914\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNNMPkROrRkYKc4Jsu6ibkFn4eWK4pNl2CUQMBOt2kKXic6PufZH4OObwg\/640?wx_fmt=png\" data-type=\"png\" data-w=\"460\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" \/><\/p>\n<p class=\"js_darkmode__97\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u4eec\u518d\u63a5\u7740\u770b tcp_sendmsg \u7684\u5176\u5b83\u90e8\u5206\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__99\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__100\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/tcp.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0tcp_sendmsg(struct\u00a0kiocb\u00a0*iocb,\u00a0struct\u00a0sock\u00a0*sk,\u00a0struct\u00a0msghdr\u00a0*msg,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0size_t\u00a0size)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__101\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u83b7\u53d6\u7528\u6237\u4f20\u9012\u8fc7\u6765\u7684\u6570\u636e\u548c\u6807\u5fd7<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0iov\u00a0=\u00a0msg-&gt;msg_iov;\u00a0<span class=\"js_darkmode__102\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u7528\u6237\u6570\u636e\u5730\u5740<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0iovlen\u00a0=\u00a0msg-&gt;msg_iovlen;\u00a0<span class=\"js_darkmode__103\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u6570\u636e\u5757\u6570\u4e3a1<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0flags\u00a0=\u00a0msg-&gt;msg_flags;\u00a0<span class=\"js_darkmode__104\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5404\u79cd\u6807\u5fd7<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__105\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u904d\u5386\u7528\u6237\u5c42\u7684\u6570\u636e\u5757<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">while<\/span>\u00a0(--iovlen\u00a0&gt;=\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>)\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__106\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5f85\u53d1\u9001\u6570\u636e\u5757\u7684\u5730\u5740<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">unsigned<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">char<\/span>\u00a0__user\u00a0*from\u00a0=\u00a0iov-&gt;iov_base;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">while<\/span>\u00a0(seglen\u00a0&gt;\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>)\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span class=\"js_darkmode__107\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u9700\u8981\u7533\u8bf7\u65b0\u7684\u00a0skb<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(copy\u00a0&lt;=\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>)\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0<span class=\"js_darkmode__108\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u7533\u8bf7\u00a0skb\uff0c\u5e76\u6dfb\u52a0\u5230\u53d1\u9001\u961f\u5217\u7684\u5c3e\u90e8<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0skb\u00a0=\u00a0sk_stream_alloc_skb(sk,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0select_size(sk,\u00a0sg),<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sk-&gt;sk_allocation);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0<span class=\"js_darkmode__109\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u628a\u00a0skb\u00a0\u6302\u5230socket\u7684\u53d1\u9001\u961f\u5217\u4e0a<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0skb_entail(sk,\u00a0skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span class=\"js_darkmode__110\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u00a0skb\u00a0\u4e2d\u6709\u8db3\u591f\u7684\u7a7a\u95f4<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(skb_availroom(skb)\u00a0&gt;\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>)\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0<span class=\"js_darkmode__111\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u62f7\u8d1d\u7528\u6237\u7a7a\u95f4\u7684\u6570\u636e\u5230\u5185\u6838\u7a7a\u95f4\uff0c\u540c\u65f6\u8ba1\u7b97\u6821\u9a8c\u548c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0<span class=\"js_darkmode__112\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/from\u662f\u7528\u6237\u7a7a\u95f4\u7684\u6570\u636e\u5730\u5740\u00a0<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0skb_add_data_nocache(sk,\u00a0skb,\u00a0from,\u00a0copy);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0}\u00a0<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__113\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u8fd9\u4e2a\u51fd\u6570\u6bd4\u8f83\u957f\uff0c\u4e0d\u8fc7\u5176\u5b9e\u903b\u8f91\u5e76\u4e0d\u590d\u6742\u3002\u5176\u4e2d msg-&gt;msg_iov \u5b58\u50a8\u7684\u662f\u7528\u6237\u6001\u5185\u5b58\u7684\u8981\u53d1\u9001\u7684\u6570\u636e\u7684 buffer\u3002\u63a5\u4e0b\u6765\u5728\u5185\u6838\u6001\u7533\u8bf7\u5185\u6838\u5185\u5b58\uff0c\u6bd4\u5982 skb\uff0c\u5e76\u628a\u7528\u6237\u5185\u5b58\u91cc\u7684\u6570\u636e\u62f7\u8d1d\u5230\u5185\u6838\u6001\u5185\u5b58\u4e2d\u3002<strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u8fd9\u5c31\u4f1a\u6d89\u53ca\u5230\u4e00\u6b21\u6216\u8005\u51e0\u6b21\u5185\u5b58\u62f7\u8d1d\u7684\u5f00\u9500<\/strong>\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZN1Ueyic8TiaLVOjSsmdfCOHFtgcsdbhBuF2p9RxBA2Mj2nmeam2ba60BQ\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.27235772357723576\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZN1Ueyic8TiaLVOjSsmdfCOHFtgcsdbhBuF2p9RxBA2Mj2nmeam2ba60BQ\/640?wx_fmt=png\" data-type=\"png\" data-w=\"492\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__114\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u81f3\u4e8e\u5185\u6838\u4ec0\u4e48\u65f6\u5019\u771f\u6b63\u628a skb \u53d1\u9001\u51fa\u53bb\u3002\u5728 tcp_sendmsg \u4e2d\u4f1a\u8fdb\u884c\u4e00\u4e9b\u5224\u65ad\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__116\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__117\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/tcp.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0tcp_sendmsg(...)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">while<\/span>(...){<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">while<\/span>(...){<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span class=\"js_darkmode__118\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u7533\u8bf7\u5185\u6838\u5185\u5b58\u5e76\u8fdb\u884c\u62f7\u8d1d<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span class=\"js_darkmode__119\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u53d1\u9001\u5224\u65ad<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(forced_push(tp))\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0tcp_mark_push(tp,\u00a0skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0__tcp_push_pending_frames(sk,\u00a0mss_now,\u00a0TCP_NAGLE_PUSH);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0}\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">else<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(skb\u00a0==\u00a0tcp_send_head(sk))<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0tcp_push_one(sk,\u00a0mss_now);\u00a0\u00a0<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">continue<\/span>;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__120\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u53ea\u6709\u6ee1\u8db3 forced_push(tp) \u6216\u8005 skb == tcp_send_head(sk) \u6210\u7acb\u7684\u65f6\u5019\uff0c\u5185\u6838\u624d\u4f1a\u771f\u6b63\u542f\u52a8\u53d1\u9001\u6570\u636e\u5305\u3002\u5176\u4e2d forced_push(tp) \u5224\u65ad\u7684\u662f\u672a\u53d1\u9001\u7684\u6570\u636e\u6570\u636e\u662f\u5426\u5df2\u7ecf\u8d85\u8fc7\u6700\u5927\u7a97\u53e3\u7684\u4e00\u534a\u4e86\u3002<\/p>\n<p class=\"js_darkmode__121\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6761\u4ef6\u90fd\u4e0d\u6ee1\u8db3\u7684\u8bdd\uff0c<strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u8fd9\u6b21\u7684\u7528\u6237\u8981\u53d1\u9001\u7684\u6570\u636e\u53ea\u662f\u62f7\u8d1d\u5230\u5185\u6838\u5c31\u7b97\u5b8c\u4e8b\u4e86\uff01<\/strong><\/p>\n<h4 class=\"js_darkmode__122\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"margin-top: 24px; margin-bottom: 12px; font-weight: bold; color: rgb(66, 75, 93);\">2\uff09\u4f20\u8f93\u5c42\u53d1\u9001<\/h4>\n<p class=\"js_darkmode__123\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5047\u8bbe\u73b0\u5728\u5185\u6838\u53d1\u9001\u6761\u4ef6\u5df2\u7ecf\u6ee1\u8db3\u4e86\uff0c\u6211\u4eec\u518d\u6765\u8ddf\u8e2a\u4e00\u4e0b\u5b9e\u9645\u7684\u53d1\u9001\u8fc7\u7a0b\u3002\u5bf9\u4e8e\u4e0a\u5c0f\u8282\u51fd\u6570\u4e2d\uff0c\u5f53\u6ee1\u8db3\u771f\u6b63\u53d1\u9001\u6761\u4ef6\u7684\u65f6\u5019\uff0c\u65e0\u8bba\u8c03\u7528\u7684\u662f __tcp_push_pending_frames \u8fd8\u662f tcp_push_one \u6700\u7ec8\u90fd\u5b9e\u9645\u4f1a\u6267\u884c\u5230 tcp_write_xmit\u3002<\/p>\n<p class=\"js_darkmode__124\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6240\u4ee5\u6211\u4eec\u76f4\u63a5\u4ece tcp_write_xmit \u770b\u8d77\uff0c\u8fd9\u4e2a\u51fd\u6570\u5904\u7406\u4e86\u4f20\u8f93\u5c42\u7684\u62e5\u585e\u63a7\u5236\u3001\u6ed1\u52a8\u7a97\u53e3\u76f8\u5173\u7684\u5de5\u4f5c\u3002\u6ee1\u8db3\u7a97\u53e3\u8981\u6c42\u7684\u65f6\u5019\uff0c\u8bbe\u7f6e\u4e00\u4e0b TCP \u5934\u7136\u540e\u5c06 skb \u4f20\u5230\u66f4\u4f4e\u7684\u7f51\u7edc\u5c42\u8fdb\u884c\u5904\u7406\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages img_loading\" src=\"data:image\/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGBgAAAABQABh6FO1AAAAABJRU5ErkJggg==\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.6118299445471349\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNmvAvBIicvqQ6wfzLVRuk7giaCnLDvpERYJ2CYeePictS7k1c4mT7tfccA\/640?wx_fmt=png\" data-type=\"png\" data-w=\"541\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" \/><\/p>\n<p class=\"js_darkmode__125\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u4eec\u6765\u770b\u4e0b tcp_write_xmit \u7684\u6e90\u7801\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__127\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__128\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/tcp_output.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0bool\u00a0tcp_write_xmit(struct\u00a0sock\u00a0*sk,\u00a0unsigned\u00a0int\u00a0mss_now,\u00a0int\u00a0nonagle,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0push_one,\u00a0gfp_t\u00a0gfp)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__129\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5faa\u73af\u83b7\u53d6\u5f85\u53d1\u9001\u00a0skb<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">while<\/span>\u00a0((skb\u00a0=\u00a0tcp_send_head(sk)))\u00a0<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__130\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u6ed1\u52a8\u7a97\u53e3\u76f8\u5173<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0cwnd_quota\u00a0=\u00a0tcp_cwnd_test(tp,\u00a0skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0tcp_snd_wnd_test(tp,\u00a0skb,\u00a0mss_now);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0tcp_mss_split_point(...);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0tso_fragment(sk,\u00a0skb,\u00a0...);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__131\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u771f\u6b63\u5f00\u542f\u53d1\u9001<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0tcp_transmit_skb(sk,\u00a0skb,\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">1<\/span>,\u00a0gfp);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__132\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u53ef\u4ee5\u770b\u5230\u6211\u4eec\u4e4b\u524d\u5728\u7f51\u7edc\u534f\u8bae\u91cc\u5b66\u7684\u6ed1\u52a8\u7a97\u53e3\u3001\u62e5\u585e\u63a7\u5236\u5c31\u662f\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\u5b8c\u6210\u7684\uff0c\u8fd9\u90e8\u5206\u5c31\u4e0d\u8fc7\u591a\u5c55\u5f00\u4e86\uff0c\u611f\u5174\u8da3\u540c\u5b66\u81ea\u5df1\u627e\u8fd9\u6bb5\u6e90\u7801\u6765\u8bfb\u3002\u6211\u4eec\u4eca\u5929\u53ea\u770b\u53d1\u9001\u4e3b\u8fc7\u7a0b\uff0c\u90a3\u5c31\u8d70\u5230\u4e86 tcp_transmit_skb\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__134\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__135\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/tcp_output.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0int\u00a0tcp_transmit_skb(struct\u00a0sock\u00a0*sk,\u00a0struct\u00a0sk_buff\u00a0*skb,\u00a0int\u00a0clone_it,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0gfp_t\u00a0gfp_mask)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__136\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/1.\u514b\u9686\u65b0\u00a0skb\u00a0\u51fa\u6765<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(likely(clone_it))\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0skb\u00a0=\u00a0skb_clone(skb,\u00a0gfp_mask);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__137\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/2.\u5c01\u88c5\u00a0TCP\u00a0\u5934<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0th\u00a0=\u00a0tcp_hdr(skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0th-&gt;source\u00a0\u00a0=\u00a0inet-&gt;inet_sport;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0th-&gt;dest\u00a0\u00a0=\u00a0inet-&gt;inet_dport;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0th-&gt;window\u00a0\u00a0=\u00a0...;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0th-&gt;urg\u00a0\u00a0\u00a0=\u00a0...;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__138\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/3.\u8c03\u7528\u7f51\u7edc\u5c42\u53d1\u9001\u63a5\u53e3<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0err\u00a0=\u00a0icsk-&gt;icsk_af_ops-&gt;queue_xmit(skb,\u00a0&amp;inet-&gt;cork.fl);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__139\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7b2c\u4e00\u4ef6\u4e8b\u662f\u5148\u514b\u9686\u4e00\u4e2a\u65b0\u7684 skb\uff0c\u8fd9\u91cc\u91cd\u70b9\u8bf4\u4e0b\u4e3a\u4ec0\u4e48\u8981\u590d\u5236\u4e00\u4e2a skb \u51fa\u6765\u5462\uff1f<\/p>\n<p class=\"js_darkmode__140\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u662f\u56e0\u4e3a skb \u540e\u7eed\u5728\u8c03\u7528\u7f51\u7edc\u5c42\uff0c\u6700\u540e\u5230\u8fbe\u7f51\u5361\u53d1\u9001\u5b8c\u6210\u7684\u65f6\u5019\uff0c\u8fd9\u4e2a skb \u4f1a\u88ab\u91ca\u653e\u6389\u3002\u800c\u6211\u4eec\u77e5\u9053 TCP \u534f\u8bae\u662f\u652f\u6301\u4e22\u5931\u91cd\u4f20\u7684\uff0c\u5728\u6536\u5230\u5bf9\u65b9\u7684 ACK \u4e4b\u524d\uff0c\u8fd9\u4e2a skb \u4e0d\u80fd\u88ab\u5220\u9664\u3002\u6240\u4ee5\u5185\u6838\u7684\u505a\u6cd5\u5c31\u662f\u6bcf\u6b21\u8c03\u7528\u7f51\u5361\u53d1\u9001\u7684\u65f6\u5019\uff0c\u5b9e\u9645\u4e0a\u4f20\u9012\u51fa\u53bb\u7684\u662f skb \u7684\u4e00\u4e2a\u62f7\u8d1d\u3002\u7b49\u6536\u5230 ACK \u518d\u771f\u6b63\u5220\u9664\u3002<\/p>\n<p class=\"js_darkmode__141\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7b2c\u4e8c\u4ef6\u4e8b\u662f\u4fee\u6539 skb \u4e2d\u7684 TCP header\uff0c\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u628a TCP \u5934\u8bbe\u7f6e\u597d\u3002\u8fd9\u91cc\u8981\u4ecb\u7ecd\u4e00\u4e2a\u5c0f\u6280\u5de7\uff0cskb \u5185\u90e8\u5176\u5b9e\u5305\u542b\u4e86\u7f51\u7edc\u534f\u8bae\u4e2d\u6240\u6709\u7684 header\u3002\u5728\u8bbe\u7f6e TCP \u5934\u7684\u65f6\u5019\uff0c\u53ea\u662f\u628a\u6307\u9488\u6307\u5411 skb \u7684\u5408\u9002\u4f4d\u7f6e\u3002\u540e\u9762\u518d\u8bbe\u7f6e IP \u5934\u7684\u65f6\u5019\uff0c\u5728\u628a\u6307\u9488\u632a\u4e00\u632a\u5c31\u884c\uff0c\u907f\u514d\u9891\u7e41\u7684\u5185\u5b58\u7533\u8bf7\u548c\u62f7\u8d1d\uff0c\u6548\u7387\u5f88\u9ad8\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNRqslNiblOrkbl9qQmlBLyDa20xUCALE5QsAlD7uyCOia0IChPZqUDP9A\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.23161764705882354\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNRqslNiblOrkbl9qQmlBLyDa20xUCALE5QsAlD7uyCOia0IChPZqUDP9A\/640?wx_fmt=png\" data-type=\"png\" data-w=\"544\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__142\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">tcp_transmit_skb \u662f\u53d1\u9001\u6570\u636e\u4f4d\u4e8e\u4f20\u8f93\u5c42\u7684\u6700\u540e\u4e00\u6b65\uff0c\u63a5\u4e0b\u6765\u5c31\u53ef\u4ee5\u8fdb\u5165\u5230\u7f51\u7edc\u5c42\u8fdb\u884c\u4e0b\u4e00\u5c42\u7684\u64cd\u4f5c\u4e86\u3002\u8c03\u7528\u4e86\u7f51\u7edc\u5c42\u63d0\u4f9b\u7684\u53d1\u9001\u63a5\u53e3icsk-&gt;icsk_af_ops-&gt;queue_xmit()\u3002<\/p>\n<p class=\"js_darkmode__143\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u4e0b\u9762\u7684\u8fd9\u4e2a\u6e90\u7801\u4e2d\uff0c\u6211\u4eec\u7684\u77e5\u9053\u4e86 queue_xmit \u5176\u5b9e\u6307\u5411\u7684\u662f ip_queue_xmit \u51fd\u6570\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__145\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__146\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/tcp_ipv4.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">const<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0inet_connection_sock_af_ops\u00a0ipv4_specific\u00a0=\u00a0{<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0.queue_xmit\u00a0\u00a0\u00a0\u00a0=\u00a0ip_queue_xmit,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0.send_check\u00a0\u00a0\u00a0\u00a0=\u00a0tcp_v4_send_check,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0...<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__147\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u81ea\u6b64\uff0c\u4f20\u8f93\u5c42\u7684\u5de5\u4f5c\u4e5f\u5c31\u90fd\u5b8c\u6210\u4e86\u3002\u6570\u636e\u79bb\u5f00\u4e86\u4f20\u8f93\u5c42\uff0c\u63a5\u4e0b\u6765\u5c06\u4f1a\u8fdb\u5165\u5230\u5185\u6838\u5728\u7f51\u7edc\u5c42\u7684\u5b9e\u73b0\u91cc\u3002<\/p>\n<h3 class=\"js_darkmode__148\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"margin-top: 24px; margin-bottom: 12px; font-weight: bold; font-size: 18px; color: rgb(66, 75, 93);\">4.3 \u7f51\u7edc\u5c42\u53d1\u9001\u5904\u7406<\/h3>\n<p class=\"js_darkmode__149\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">Linux \u5185\u6838\u7f51\u7edc\u5c42\u7684\u53d1\u9001\u7684\u5b9e\u73b0\u4f4d\u4e8e net\/ipv4\/ip_output.c \u8fd9\u4e2a\u6587\u4ef6\u3002\u4f20\u8f93\u5c42\u8c03\u7528\u5230\u7684 ip_queue_xmit \u4e5f\u5728\u8fd9\u91cc\u3002\uff08\u4ece\u6587\u4ef6\u540d\u4e0a\u4e5f\u80fd\u770b\u51fa\u6765\u8fdb\u5165\u5230 IP \u5c42\u4e86\uff0c\u6e90\u6587\u4ef6\u540d\u5df2\u7ecf\u4ece tcp_xxx \u53d8\u6210\u4e86 ip_xxx\u3002\uff09<\/p>\n<p class=\"js_darkmode__150\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u7f51\u7edc\u5c42\u91cc\u4e3b\u8981\u5904\u7406\u8def\u7531\u9879\u67e5\u627e\u3001IP \u5934\u8bbe\u7f6e\u3001netfilter \u8fc7\u6ee4\u3001skb \u5207\u5206\uff08\u5927\u4e8e MTU \u7684\u8bdd\uff09\u7b49\u51e0\u9879\u5de5\u4f5c\uff0c\u5904\u7406\u5b8c\u8fd9\u4e9b\u5de5\u4f5c\u540e\u4f1a\u4ea4\u7ed9\u66f4\u4e0b\u5c42\u7684\u90bb\u5c45\u5b50\u7cfb\u7edf\u6765\u5904\u7406\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNHKljuAcgia19LTvD0E6gZT0KcSwD7XNV5rmSUib2icIqLPYrl6cicGPO0A\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.7814113597246127\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNHKljuAcgia19LTvD0E6gZT0KcSwD7XNV5rmSUib2icIqLPYrl6cicGPO0A\/640?wx_fmt=png\" data-type=\"png\" data-w=\"581\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__151\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u4eec\u6765\u770b\u7f51\u7edc\u5c42\u5165\u53e3\u51fd\u6570 ip_queue_xmit \u7684\u6e90\u7801\uff1a<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__153\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__154\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/ip_output.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0ip_queue_xmit(struct\u00a0sk_buff\u00a0*skb,\u00a0struct\u00a0flowi\u00a0*fl)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__155\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u68c0\u67e5\u00a0socket\u00a0\u4e2d\u662f\u5426\u6709\u7f13\u5b58\u7684\u8def\u7531\u8868<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0rt\u00a0=\u00a0(struct\u00a0rtable\u00a0*)__sk_dst_check(sk,\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(rt\u00a0==\u00a0<span data-darkmode-color-16207924526368=\"rgb(86, 182, 194)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(86, 182, 194)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">NULL<\/span>)\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__156\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u6ca1\u6709\u7f13\u5b58\u5219\u5c55\u5f00\u67e5\u627e<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__157\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5219\u67e5\u627e\u8def\u7531\u9879\uff0c\u00a0\u5e76\u7f13\u5b58\u5230\u00a0socket\u00a0\u4e2d<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0rt\u00a0=\u00a0ip_route_output_ports(...);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0sk_setup_caps(sk,\u00a0&amp;rt-&gt;dst);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__158\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u4e3a\u00a0skb\u00a0\u8bbe\u7f6e\u8def\u7531\u8868<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0skb_dst_set_noref(skb,\u00a0&amp;rt-&gt;dst);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__159\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u8bbe\u7f6e\u00a0IP\u00a0header<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0iph\u00a0=\u00a0ip_hdr(skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0iph-&gt;protocol\u00a0=\u00a0sk-&gt;sk_protocol;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0iph-&gt;ttl\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0ip_select_ttl(inet,\u00a0&amp;rt-&gt;dst);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0iph-&gt;frag_off\u00a0=\u00a0...;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__160\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u53d1\u9001<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0ip_local_out(skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__161\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">ip_queue_xmit \u5df2\u7ecf\u5230\u4e86\u7f51\u7edc\u5c42\uff0c\u5728\u8fd9\u4e2a\u51fd\u6570\u91cc\u6211\u4eec\u770b\u5230\u4e86\u7f51\u7edc\u5c42\u76f8\u5173\u7684\u529f\u80fd\u8def\u7531\u9879\u67e5\u627e\uff0c\u5982\u679c\u627e\u5230\u4e86\u5219\u8bbe\u7f6e\u5230 skb \u4e0a\uff08\u6ca1\u6709\u8def\u7531\u7684\u8bdd\u5c31\u76f4\u63a5\u62a5\u9519\u8fd4\u56de\u4e86\uff09\u3002<\/p>\n<p class=\"js_darkmode__162\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728 Linux \u4e0a\u901a\u8fc7 route \u547d\u4ee4\u53ef\u4ee5\u770b\u5230\u4f60\u672c\u673a\u7684\u8def\u7531\u914d\u7f6e\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages img_loading\" src=\"data:image\/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGBgAAAABQABh6FO1AAAAABJRU5ErkJggg==\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.15364916773367476\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNdr7Zib9CBF65ARWmR1v6V4PnTXbMDibNGicC3icd7iaLObnhqIIPzomcY2g\/640?wx_fmt=png\" data-type=\"png\" data-w=\"781\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" \/><\/p>\n<p class=\"js_darkmode__163\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u8def\u7531\u8868\u4e2d\uff0c\u53ef\u4ee5\u67e5\u5230\u67d0\u4e2a\u76ee\u7684\u7f51\u7edc\u5e94\u8be5\u901a\u8fc7\u54ea\u4e2a Iface\uff08\u7f51\u5361\uff09\uff0c\u54ea\u4e2a Gateway\uff08\u7f51\u5361\uff09\u53d1\u9001\u51fa\u53bb\u3002\u67e5\u627e\u51fa\u6765\u4ee5\u540e\u7f13\u5b58\u5230 socket \u4e0a\uff0c\u4e0b\u6b21\u518d\u53d1\u9001\u6570\u636e\u5c31\u4e0d\u7528\u67e5\u4e86\u3002<\/p>\n<p class=\"js_darkmode__164\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u63a5\u7740\u628a\u8def\u7531\u8868\u5730\u5740\u4e5f\u653e\u5230 skb \u91cc\u53bb\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__166\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__167\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0include\/linux\/skbuff.h<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0sk_buff\u00a0{<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__168\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u4fdd\u5b58\u4e86\u4e00\u4e9b\u8def\u7531\u76f8\u5173\u4fe1\u606f<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">unsigned<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">long<\/span>\u00a0\u00a0_skb_refdst;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__169\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u63a5\u4e0b\u6765\u5c31\u662f\u5b9a\u4f4d\u5230 skb \u91cc\u7684 IP \u5934\u7684\u4f4d\u7f6e\u4e0a\uff0c\u7136\u540e\u5f00\u59cb\u6309\u7167\u534f\u8bae\u89c4\u8303\u8bbe\u7f6e IP header\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages img_loading\" src=\"data:image\/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGBgAAAABQABh6FO1AAAAABJRU5ErkJggg==\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-cropselx1=\"0\" data-cropselx2=\"544\" data-cropsely1=\"0\" data-cropsely2=\"126\" data-galleryid=\"\" data-ratio=\"0.23161764705882354\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNqIZkibKCHoqCAiapVUqdMrAryG98I9muj6CMkfvGu45rFOYcM3l27wTg\/640?wx_fmt=png\" data-type=\"png\" data-w=\"544\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" \/><\/p>\n<p class=\"js_darkmode__170\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u518d\u901a\u8fc7 ip_local_out \u8fdb\u5165\u5230\u4e0b\u4e00\u6b65\u7684\u5904\u7406\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__172\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__173\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/ip_output.c\u00a0\u00a0<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0ip_local_out(struct\u00a0sk_buff\u00a0*skb)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__174\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u6267\u884c\u00a0netfilter\u00a0\u8fc7\u6ee4<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0err\u00a0=\u00a0__ip_local_out(skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__175\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5f00\u59cb\u53d1\u9001\u6570\u636e<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(likely(err\u00a0==\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">1<\/span>))<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0err\u00a0=\u00a0dst_output(skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__176\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728 ip_local_out =&gt; __ip_local_out =&gt; nf_hook \u4f1a\u6267\u884c netfilter \u8fc7\u6ee4\u3002\u5982\u679c\u4f60\u4f7f\u7528 iptables \u914d\u7f6e\u4e86\u4e00\u4e9b\u89c4\u5219\uff0c\u90a3\u4e48\u8fd9\u91cc\u5c06\u68c0\u6d4b\u662f\u5426\u547d\u4e2d\u89c4\u5219\u3002<strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u5982\u679c\u4f60\u8bbe\u7f6e\u4e86\u975e\u5e38\u590d\u6742\u7684 netfilter \u89c4\u5219\uff0c\u5728\u8fd9\u4e2a\u51fd\u6570\u8fd9\u91cc\u5c06\u4f1a\u5bfc\u81f4\u4f60\u7684\u8fdb\u7a0b CPU \u5f00\u9500\u4f1a\u6781\u5927\u589e\u52a0<\/strong>\u3002<\/p>\n<p class=\"js_darkmode__177\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u8fd8\u662f\u4e0d\u591a\u5c55\u5f00\u8bf4\uff0c\u7ee7\u7eed\u53ea\u804a\u548c\u53d1\u9001\u6709\u5173\u7684\u8fc7\u7a0b dst_output\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__179\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__180\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0include\/net\/dst.h<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0inline\u00a0int\u00a0dst_output(struct\u00a0sk_buff\u00a0*skb)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0skb_dst(skb)-&gt;output(skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__181\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6b64\u51fd\u6570\u627e\u5230\u5230\u8fd9\u4e2a skb \u7684\u8def\u7531\u8868\uff08dst \u6761\u76ee\uff09 \uff0c\u7136\u540e\u8c03\u7528\u8def\u7531\u8868\u7684 output \u65b9\u6cd5\u3002\u8fd9\u53c8\u662f\u4e00\u4e2a\u51fd\u6570\u6307\u9488\uff0c\u6307\u5411\u7684\u662f ip_output \u65b9\u6cd5\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__183\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__184\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/ip_output.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0ip_output(struct\u00a0sk_buff\u00a0*skb)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__185\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u7edf\u8ba1<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0.....<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__186\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u518d\u6b21\u4ea4\u7ed9\u00a0netfilter\uff0c\u5b8c\u6bd5\u540e\u56de\u8c03\u00a0ip_finish_output<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0NF_HOOK_COND(NFPROTO_IPV4,\u00a0NF_INET_POST_ROUTING,\u00a0skb,\u00a0<span data-darkmode-color-16207924526368=\"rgb(86, 182, 194)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(86, 182, 194)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">NULL<\/span>,\u00a0dev,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0ip_finish_output,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0!(IPCB(skb)-&gt;flags\u00a0&amp;\u00a0IPSKB_REROUTED));<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__187\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728 ip_output \u4e2d\u8fdb\u884c\u4e00\u4e9b\u7b80\u5355\u7684\uff0c\u7edf\u8ba1\u5de5\u4f5c\uff0c\u518d\u6b21\u6267\u884c netfilter \u8fc7\u6ee4\u3002\u8fc7\u6ee4\u901a\u8fc7\u4e4b\u540e\u56de\u8c03 ip_finish_output\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__189\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__190\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/ip_output.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0int\u00a0ip_finish_output(struct\u00a0sk_buff\u00a0*skb)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__191\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5927\u4e8e\u00a0mtu\u00a0\u7684\u8bdd\u5c31\u8981\u8fdb\u884c\u5206\u7247\u4e86<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(skb-&gt;len\u00a0&gt;\u00a0ip_skb_dst_mtu(skb)\u00a0&amp;&amp;\u00a0!skb_is_gso(skb))<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0ip_fragment(skb,\u00a0ip_finish_output2);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">else<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0ip_finish_output2(skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__192\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728 ip_finish_output \u4e2d\u6211\u4eec\u770b\u5230\uff0c<strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u5982\u679c\u6570\u636e\u5927\u4e8e MTU \u7684\u8bdd\uff0c\u662f\u4f1a\u6267\u884c\u5206\u7247\u7684\u3002<\/strong><\/p>\n<blockquote class=\"js_darkmode__193\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(106, 115, 125)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(106, 115, 125)\" data-darkmode-bgcolor-16207924526368=\"rgb(25, 25, 25)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(255, 255, 255)\" data-style=\"font-size: 0.9em; overflow: auto; color: rgb(106, 115, 125); padding: 10px 10px 10px 20px; margin: 0px 8px; border-width: initial; border-style: none; border-color: initial; background: rgb(255, 255, 255); box-shadow: rgba(0, 0, 0, 0.16) 0px 1px 2px -2px, rgba(0, 0, 0, 0.12) 0px 3px 6px 0px, rgba(0, 0, 0, 0.09) 0px 5px 12px 4px;\">\n<p class=\"js_darkmode__194\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(106, 115, 125)|rgb(66, 75, 93)\" data-darkmode-bgcolor-16207924526368=\"rgb(25, 25, 25)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(255, 255, 255)\" data-style=\"padding-top: 8px; padding-bottom: 8px; word-spacing: 3px; letter-spacing: 1px; font-size: 14px; color: rgb(66, 75, 93); line-height: 24px;\">\u5b9e\u9645 MTU \u5927\u5c0f\u786e\u5b9a\u4f9d\u8d56 MTU \u53d1\u73b0\uff0c\u4ee5\u592a\u7f51\u5e27\u4e3a 1500 \u5b57\u8282\u3002\u4e4b\u524d QQ \u56e2\u961f\u5728\u65e9\u671f\u7684\u65f6\u5019\uff0c\u4f1a\u5c3d\u91cf\u63a7\u5236\u81ea\u5df1\u6570\u636e\u5305\u5c3a\u5bf8\u5c0f\u4e8e MTU\uff0c\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u6765\u4f18\u5316\u7f51\u7edc\u6027\u80fd\u3002\u56e0\u4e3a\u5206\u7247\u4f1a\u5e26\u6765\u4e24\u4e2a\u95ee\u9898\uff1a1\u3001\u9700\u8981\u8fdb\u884c\u989d\u5916\u7684\u5207\u5206\u5904\u7406\uff0c\u6709\u989d\u5916\u6027\u80fd\u5f00\u9500\u30022\u3001\u53ea\u8981\u4e00\u4e2a\u5206\u7247\u4e22\u5931\uff0c\u6574\u4e2a\u5305\u90fd\u5f97\u91cd\u4f20\u3002\u6240\u4ee5\u907f\u514d\u5206\u7247\u65e2\u675c\u7edd\u4e86\u5206\u7247\u5f00\u9500\uff0c\u4e5f\u5927\u5927\u964d\u4f4e\u4e86\u91cd\u4f20\u7387\u3002<\/p>\n<\/blockquote>\n<p class=\"js_darkmode__195\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728 ip_finish_output2 \u4e2d\uff0c\u7ec8\u4e8e\u53d1\u9001\u8fc7\u7a0b\u4f1a\u8fdb\u5165\u5230\u4e0b\u4e00\u5c42\uff0c\u90bb\u5c45\u5b50\u7cfb\u7edf\u4e2d\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__197\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__198\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/ipv4\/ip_output.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0inline\u00a0int\u00a0ip_finish_output2(struct\u00a0sk_buff\u00a0*skb)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__199\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u6839\u636e\u4e0b\u4e00\u8df3 IP \u5730\u5740\u67e5\u627e\u90bb\u5c45\u9879\uff0c\u627e\u4e0d\u5230\u5c31\u521b\u5efa\u4e00\u4e2a<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0nexthop\u00a0=\u00a0(__force\u00a0u32)\u00a0rt_nexthop(rt,\u00a0ip_hdr(skb)-&gt;daddr);\u00a0\u00a0<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0neigh\u00a0=\u00a0__ipv4_neigh_lookup_noref(dev,\u00a0nexthop);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(unlikely(!neigh))<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0neigh\u00a0=\u00a0__neigh_create(&amp;arp_tbl,\u00a0&amp;nexthop,\u00a0dev,\u00a0<span data-darkmode-color-16207924526368=\"rgb(86, 182, 194)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(86, 182, 194)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">false<\/span>);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__200\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u7ee7\u7eed\u5411\u4e0b\u5c42\u4f20\u9012<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int<\/span>\u00a0res\u00a0=\u00a0dst_neigh_output(dst,\u00a0neigh,\u00a0skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<h3 class=\"js_darkmode__201\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"margin-top: 24px; margin-bottom: 12px; font-weight: bold; font-size: 18px; color: rgb(66, 75, 93);\">4.4 \u90bb\u5c45\u5b50\u7cfb\u7edf<\/h3>\n<p class=\"js_darkmode__202\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u90bb\u5c45\u5b50\u7cfb\u7edf\u662f\u4f4d\u4e8e\u7f51\u7edc\u5c42\u548c\u6570\u636e\u94fe\u8def\u5c42\u4e2d\u95f4\u7684\u4e00\u4e2a\u7cfb\u7edf\uff0c\u5176\u4f5c\u7528\u662f\u5bf9\u7f51\u7edc\u5c42\u63d0\u4f9b\u4e00\u4e2a\u5c01\u88c5\uff0c\u8ba9\u7f51\u7edc\u5c42\u4e0d\u5fc5\u5173\u5fc3\u4e0b\u5c42\u7684\u5730\u5740\u4fe1\u606f\uff0c\u8ba9\u4e0b\u5c42\u6765\u51b3\u5b9a\u53d1\u9001\u5230\u54ea\u4e2a MAC \u5730\u5740\u3002<\/p>\n<p class=\"js_darkmode__203\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u800c\u4e14\u8fd9\u4e2a\u90bb\u5c45\u5b50\u7cfb\u7edf\u5e76\u4e0d\u4f4d\u4e8e\u534f\u8bae\u6808 net\/ipv4\/ \u76ee\u5f55\u5185\uff0c\u800c\u662f\u4f4d\u4e8e net\/core\/neighbour.c\u3002\u56e0\u4e3a\u65e0\u8bba\u662f\u5bf9\u4e8e IPv4 \u8fd8\u662f IPv6 \uff0c\u90fd\u9700\u8981\u4f7f\u7528\u8be5\u6a21\u5757\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNJZBziacZ2g4pYHa8A4TFHnfumx1Tmz21BrRnVMmhAWmCP9wr9JYUtog\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-cropselx1=\"0\" data-cropselx2=\"578\" data-cropsely1=\"0\" data-cropsely2=\"329\" data-galleryid=\"\" data-ratio=\"0.3197278911564626\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNJZBziacZ2g4pYHa8A4TFHnfumx1Tmz21BrRnVMmhAWmCP9wr9JYUtog\/640?wx_fmt=png\" data-type=\"png\" data-w=\"441\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__204\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u90bb\u5c45\u5b50\u7cfb\u7edf\u91cc\u4e3b\u8981\u662f\u67e5\u627e\u6216\u8005\u521b\u5efa\u90bb\u5c45\u9879\uff0c\u5728\u521b\u9020\u90bb\u5c45\u9879\u7684\u65f6\u5019\uff0c\u6709\u53ef\u80fd\u4f1a\u53d1\u51fa\u5b9e\u9645\u7684 arp \u8bf7\u6c42\u3002\u7136\u540e\u5c01\u88c5\u4e00\u4e0b MAC \u5934\uff0c\u5c06\u53d1\u9001\u8fc7\u7a0b\u518d\u4f20\u9012\u5230\u66f4\u4e0b\u5c42\u7684\u7f51\u7edc\u8bbe\u5907\u5b50\u7cfb\u7edf\u3002\u5927\u81f4\u6d41\u7a0b\u5982\u56fe\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNL6qiaV60wqwUvibIQpj5vic8vNREQq1jTEwhOdn5zzN5YedSmiccaUFXNQ\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.5690184049079755\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNL6qiaV60wqwUvibIQpj5vic8vNREQq1jTEwhOdn5zzN5YedSmiccaUFXNQ\/640?wx_fmt=png\" data-type=\"png\" data-w=\"652\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__205\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7406\u89e3\u4e86\u5927\u81f4\u6d41\u7a0b\uff0c\u6211\u4eec\u518d\u56de\u5934\u770b\u6e90\u7801\u3002\u5728\u4e0a\u9762\u5c0f\u8282 ip_finish_output2 \u6e90\u7801\u4e2d\u8c03\u7528\u4e86 __ipv4_neigh_lookup_noref\u3002\u5b83\u662f\u5728 arp \u7f13\u5b58\u4e2d\u8fdb\u884c\u67e5\u627e\uff0c\u5176\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4f20\u5165\u7684\u662f\u8def\u7531\u4e0b\u4e00\u8df3 IP \u4fe1\u606f\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__207\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__208\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0include\/net\/arp.h<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">extern<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0neigh_table\u00a0arp_tbl;<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">inline<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0neighbour\u00a0*__ipv4_neigh_lookup_noref(<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0struct\u00a0net_device\u00a0*dev,\u00a0u32\u00a0key)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>{<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0neigh_hash_table\u00a0*nht\u00a0=\u00a0rcu_dereference_bh(arp_tbl.nht);<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__209\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u8ba1\u7b97\u00a0hash\u00a0\u503c\uff0c\u52a0\u901f\u67e5\u627e<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0hash_val\u00a0=\u00a0arp_hashfn(......);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">for<\/span>\u00a0(n\u00a0=\u00a0rcu_dereference_bh(nht-&gt;hash_buckets[hash_val]);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0n\u00a0!=\u00a0<span data-darkmode-color-16207924526368=\"rgb(86, 182, 194)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(86, 182, 194)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">NULL<\/span>;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0n\u00a0=\u00a0rcu_dereference_bh(n-&gt;next))\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(n-&gt;dev\u00a0==\u00a0dev\u00a0&amp;&amp;\u00a0*(u32\u00a0*)n-&gt;primary_key\u00a0==\u00a0key)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0n;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__210\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5982\u679c\u67e5\u627e\u4e0d\u5230\uff0c\u5219\u8c03\u7528 __neigh_create \u521b\u5efa\u4e00\u4e2a\u90bb\u5c45\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__212\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__213\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/core\/neighbour.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0neighbour\u00a0*__neigh_create(......)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>{<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__214\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u7533\u8bf7\u90bb\u5c45\u8868\u9879<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0neighbour\u00a0*n1,\u00a0*rc,\u00a0*n\u00a0=\u00a0neigh_alloc(tbl,\u00a0dev);<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__215\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u6784\u9020\u8d4b\u503c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(230, 192, 123)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(230, 192, 123)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">memcpy<\/span>(n-&gt;primary_key,\u00a0pkey,\u00a0key_len);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0n-&gt;dev\u00a0=\u00a0dev;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0n-&gt;parms-&gt;neigh_setup(n);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__216\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u6700\u540e\u6dfb\u52a0\u5230\u90bb\u5c45\u00a0hashtable\u00a0\u4e2d<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0rcu_assign_pointer(nht-&gt;hash_buckets[hash_val],\u00a0n);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__217\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6709\u4e86\u90bb\u5c45\u9879\u4ee5\u540e\uff0c\u6b64\u65f6\u4ecd\u7136\u8fd8\u4e0d\u5177\u5907\u53d1\u9001 IP \u62a5\u6587\u7684\u80fd\u529b\uff0c\u56e0\u4e3a\u76ee\u7684 MAC \u5730\u5740\u8fd8\u672a\u83b7\u53d6\u3002\u8c03\u7528 dst_neigh_output \u7ee7\u7eed\u4f20\u9012 skb\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__219\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__220\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0include\/net\/dst.h<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0inline\u00a0int\u00a0dst_neigh_output(struct\u00a0dst_entry\u00a0*dst,\u00a0<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0struct\u00a0neighbour\u00a0*n,\u00a0struct\u00a0sk_buff\u00a0*skb)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0n-&gt;output(n,\u00a0skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__221\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u8c03\u7528 output\uff0c\u5b9e\u9645\u6307\u5411\u7684\u662f neigh_resolve_output\u3002\u5728\u8fd9\u4e2a\u51fd\u6570\u5185\u90e8\u6709\u53ef\u80fd\u4f1a\u53d1\u51fa arp \u7f51\u7edc\u8bf7\u6c42\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__223\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__224\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/core\/neighbour.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0neigh_resolve_output()<\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__225\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u6ce8\u610f\uff1a\u8fd9\u91cc\u53ef\u80fd\u4f1a\u89e6\u53d1 arp \u8bf7\u6c42<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(!neigh_event_send(neigh,\u00a0skb))\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__226\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/neigh-&gt;ha\u00a0\u662f\u00a0MAC\u00a0\u5730\u5740<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0dev_hard_header(skb,\u00a0dev,\u00a0ntohs(skb-&gt;protocol),<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0neigh-&gt;ha,\u00a0<span data-darkmode-color-16207924526368=\"rgb(86, 182, 194)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(86, 182, 194)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">NULL<\/span>,\u00a0skb-&gt;len);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__227\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u53d1\u9001<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0dev_queue_xmit(skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__228\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5f53\u83b7\u53d6\u5230\u786c\u4ef6 MAC \u5730\u5740\u4ee5\u540e\uff0c\u5c31\u53ef\u4ee5\u5c01\u88c5 skb \u7684 MAC \u5934\u4e86\u3002\u6700\u540e\u8c03\u7528 dev_queue_xmit \u5c06 skb \u4f20\u9012\u7ed9 Linux \u7f51\u7edc\u8bbe\u5907\u5b50\u7cfb\u7edf\u3002<\/p>\n<h3 class=\"js_darkmode__229\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"margin-top: 24px; margin-bottom: 12px; font-weight: bold; font-size: 18px; color: rgb(66, 75, 93);\">4.5 \u7f51\u7edc\u8bbe\u5907\u5b50\u7cfb\u7edf<\/h3>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages img_loading\" src=\"data:image\/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGBgAAAABQABh6FO1AAAAABJRU5ErkJggg==\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.7246127366609294\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNWlqeL1lcN9nsJ7J4cX1v3yYPYED4gV6uyBBlpwfCFDzPp3abYrT47Q\/640?wx_fmt=png\" data-type=\"png\" data-w=\"581\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" \/><\/p>\n<p class=\"js_darkmode__230\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u90bb\u5c45\u5b50\u7cfb\u7edf\u901a\u8fc7 dev_queue_xmit \u8fdb\u5165\u5230\u7f51\u7edc\u8bbe\u5907\u5b50\u7cfb\u7edf\u4e2d\u6765\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__232\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__233\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/core\/dev.c\u00a0<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0dev_queue_xmit(struct\u00a0sk_buff\u00a0*skb)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__234\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u9009\u62e9\u53d1\u9001\u961f\u5217<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0txq\u00a0=\u00a0netdev_pick_tx(dev,\u00a0skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__235\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u83b7\u53d6\u4e0e\u6b64\u961f\u5217\u5173\u8054\u7684\u6392\u961f\u89c4\u5219<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0q\u00a0=\u00a0rcu_dereference_bh(txq-&gt;qdisc);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__236\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5982\u679c\u6709\u961f\u5217\uff0c\u5219\u8c03\u7528__dev_xmit_skb\u00a0\u7ee7\u7eed\u5904\u7406\u6570\u636e<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(q-&gt;enqueue)\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0rc\u00a0=\u00a0__dev_xmit_skb(skb,\u00a0q,\u00a0dev,\u00a0txq);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">goto<\/span>\u00a0out;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__237\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u6ca1\u6709\u961f\u5217\u7684\u662f\u56de\u73af\u8bbe\u5907\u548c\u96a7\u9053\u8bbe\u5907<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__238\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5f00\u7bc7\u7b2c\u4e8c\u8282\u7f51\u5361\u542f\u52a8\u51c6\u5907\u91cc\u6211\u4eec\u8bf4\u8fc7\uff0c\u7f51\u5361\u662f\u6709\u591a\u4e2a\u53d1\u9001\u961f\u5217\u7684\uff08\u5c24\u5176\u662f\u73b0\u5728\u7684\u7f51\u5361\uff09\u3002\u4e0a\u9762\u5bf9 netdev_pick_tx \u51fd\u6570\u7684\u8c03\u7528\u5c31\u662f\u9009\u62e9\u4e00\u4e2a\u961f\u5217\u8fdb\u884c\u53d1\u9001\u3002<\/p>\n<p class=\"js_darkmode__239\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">netdev_pick_tx \u53d1\u9001\u961f\u5217\u7684\u9009\u62e9\u53d7 XPS \u7b49\u914d\u7f6e\u7684\u5f71\u54cd\uff0c\u800c\u4e14\u8fd8\u6709\u7f13\u5b58\uff0c\u4e5f\u662f\u4e00\u5957\u5c0f\u590d\u6742\u7684\u903b\u8f91\u3002\u8fd9\u91cc\u6211\u4eec\u53ea\u5173\u6ce8\u4e24\u4e2a\u903b\u8f91\uff0c\u9996\u5148\u4f1a\u83b7\u53d6\u7528\u6237\u7684 XPS \u914d\u7f6e\uff0c\u5426\u5219\u5c31\u81ea\u52a8\u8ba1\u7b97\u4e86\u3002\u4ee3\u7801\u89c1 netdev_pick_tx =&gt; __netdev_pick_tx\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__241\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__242\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/core\/flow_dissector.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>u16\u00a0__netdev_pick_tx(struct\u00a0net_device\u00a0*dev,\u00a0struct\u00a0sk_buff\u00a0*skb)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__243\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u83b7\u53d6\u00a0XPS\u00a0\u914d\u7f6e<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int<\/span>\u00a0new_index\u00a0=\u00a0get_xps_queue(dev,\u00a0skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__244\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u81ea\u52a8\u8ba1\u7b97\u961f\u5217<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(new_index\u00a0&lt;\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0new_index\u00a0=\u00a0skb_tx_hash(dev,\u00a0skb);}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__245\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7136\u540e\u83b7\u53d6\u4e0e\u6b64\u961f\u5217\u5173\u8054\u7684 qdisc\u3002\u5728 linux \u4e0a\u901a\u8fc7 tc \u547d\u4ee4\u53ef\u4ee5\u770b\u5230 qdisc \u7c7b\u578b\uff0c\u4f8b\u5982\u5bf9\u4e8e\u6211\u7684\u67d0\u53f0\u591a\u961f\u5217\u7f51\u5361\u673a\u5668\u4e0a\u662f mq disc\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__247\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span data-darkmode-color-16207924526368=\"rgb(97, 174, 238)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(97, 174, 238)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">#tc\u00a0qdisc<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>qdisc\u00a0mq\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>:\u00a0dev\u00a0eth0\u00a0root<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__248\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5927\u90e8\u5206\u7684\u8bbe\u5907\u90fd\u6709\u961f\u5217\uff08\u56de\u73af\u8bbe\u5907\u548c\u96a7\u9053\u8bbe\u5907\u9664\u5916\uff09\uff0c\u6240\u4ee5\u73b0\u5728\u6211\u4eec\u8fdb\u5165\u5230 __dev_xmit_skb\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__250\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__251\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/core\/dev.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">inline<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int<\/span>\u00a0__dev_xmit_skb(struct\u00a0sk_buff\u00a0*skb,\u00a0struct\u00a0Qdisc\u00a0*q,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0struct\u00a0net_device\u00a0*dev,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0struct\u00a0netdev_queue\u00a0*txq)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__252\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/1.\u5982\u679c\u53ef\u4ee5\u7ed5\u5f00\u6392\u961f\u7cfb\u7edf<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0((q-&gt;flags\u00a0&amp;\u00a0TCQ_F_CAN_BYPASS)\u00a0&amp;&amp;\u00a0!qdisc_qlen(q)\u00a0&amp;&amp;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0qdisc_run_begin(q))\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__253\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/2.\u6b63\u5e38\u6392\u961f<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">else<\/span>\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__254\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5165\u961f<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0q-&gt;enqueue(skb,\u00a0q)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__255\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5f00\u59cb\u53d1\u9001<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0__qdisc_run(q);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__256\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4e0a\u8ff0\u4ee3\u7801\u4e2d\u5206\u4e24\u79cd\u60c5\u51b5\uff0c1 \u662f\u53ef\u4ee5 bypass\uff08\u7ed5\u8fc7\uff09\u6392\u961f\u7cfb\u7edf\u7684\uff0c\u53e6\u5916\u4e00\u79cd\u662f\u6b63\u5e38\u6392\u961f\u3002\u6211\u4eec\u53ea\u770b\u7b2c\u4e8c\u79cd\u60c5\u51b5\u3002<\/p>\n<p class=\"js_darkmode__257\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5148\u8c03\u7528 q-&gt;enqueue \u628a skb \u6dfb\u52a0\u5230\u961f\u5217\u91cc\u3002\u7136\u540e\u8c03\u7528 __qdisc_run \u5f00\u59cb\u53d1\u9001\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__259\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__260\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/sched\/sch_generic.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">void<\/span>\u00a0__qdisc_run(struct\u00a0Qdisc\u00a0*q)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int<\/span>\u00a0quota\u00a0=\u00a0weight_p;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__261\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5faa\u73af\u4ece\u961f\u5217\u53d6\u51fa\u4e00\u4e2a\u00a0skb\u00a0\u5e76\u53d1\u9001<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">while<\/span>\u00a0(qdisc_restart(q))\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__262\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u00a0\u5982\u679c\u53d1\u751f\u4e0b\u9762\u60c5\u51b5\u4e4b\u4e00\uff0c\u5219\u5ef6\u540e\u5904\u7406\uff1a<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__263\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u00a01.\u00a0quota\u00a0\u7528\u5c3d<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__264\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u00a02.\u00a0\u5176\u4ed6\u8fdb\u7a0b\u9700\u8981\u00a0CPU<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(--quota\u00a0&lt;=\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>\u00a0||\u00a0need_resched())\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span class=\"js_darkmode__265\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u5c06\u89e6\u53d1\u4e00\u6b21\u00a0NET_TX_SOFTIRQ\u00a0\u7c7b\u578b\u00a0softirq<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0__netif_schedule(q);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">break<\/span>;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__266\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u770b\u5230 while \u5faa\u73af\u4e0d\u65ad\u5730\u4ece\u961f\u5217\u4e2d\u53d6\u51fa skb \u5e76\u8fdb\u884c\u53d1\u9001\u3002\u6ce8\u610f\uff0c\u8fd9\u4e2a\u65f6\u5019\u5176\u5b9e\u90fd\u5360\u7528\u7684\u662f\u7528\u6237\u8fdb\u7a0b\u7684\u7cfb\u7edf\u6001\u65f6\u95f4(sy)\u3002\u53ea\u6709\u5f53 quota \u7528\u5c3d\u6216\u8005\u5176\u5b83\u8fdb\u7a0b\u9700\u8981 CPU \u7684\u65f6\u5019\u624d\u89e6\u53d1\u8f6f\u4e2d\u65ad\u8fdb\u884c\u53d1\u9001\u3002<\/p>\n<p class=\"js_darkmode__267\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\"><strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u6240\u4ee5\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u4e00\u822c\u670d\u52a1\u5668\u4e0a\u67e5\u770b \/proc\/softirqs\uff0c\u4e00\u822c NET_RX \u90fd\u8981\u6bd4 NET_TX \u5927\u7684\u591a\u7684\u7b2c\u4e8c\u4e2a\u539f\u56e0<\/strong>\u3002\u5bf9\u4e8e\u8bfb\u6765\u8bf4\uff0c\u90fd\u662f\u8981\u7ecf\u8fc7 NET_RX \u8f6f\u4e2d\u65ad\uff0c\u800c\u5bf9\u4e8e\u53d1\u9001\u6765\u8bf4\uff0c\u53ea\u6709\u7cfb\u7edf\u6001\u914d\u989d\u7528\u5c3d\u624d\u8ba9\u8f6f\u4e2d\u65ad\u4e0a\u3002<\/p>\n<p class=\"js_darkmode__268\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u4eec\u6765\u628a\u7cbe\u529b\u5728\u653e\u5230 qdisc_restart \u4e0a\uff0c\u7ee7\u7eed\u770b\u53d1\u9001\u8fc7\u7a0b\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__270\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0inline\u00a0int\u00a0qdisc_restart(struct\u00a0Qdisc\u00a0*q)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__271\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u4ece\u00a0qdisc\u00a0\u4e2d\u53d6\u51fa\u8981\u53d1\u9001\u7684\u00a0skb<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0skb\u00a0=\u00a0dequeue_skb(q);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0...<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0sch_direct_xmit(skb,\u00a0q,\u00a0dev,\u00a0txq,\u00a0root_lock);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__272\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">qdisc_restart \u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u4e00\u4e2a skb\uff0c\u5e76\u8c03\u7528 sch_direct_xmit \u7ee7\u7eed\u53d1\u9001\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__274\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__275\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/sched\/sch_generic.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0sch_direct_xmit(struct\u00a0sk_buff\u00a0*skb,\u00a0struct\u00a0Qdisc\u00a0*q,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0struct\u00a0net_device\u00a0*dev,\u00a0struct\u00a0netdev_queue\u00a0*txq,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0spinlock_t\u00a0*root_lock)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__276\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u8c03\u7528\u9a71\u52a8\u7a0b\u5e8f\u6765\u53d1\u9001\u6570\u636e<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0ret\u00a0=\u00a0dev_hard_start_xmit(skb,\u00a0dev,\u00a0txq);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<h3 class=\"js_darkmode__277\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"margin-top: 24px; margin-bottom: 12px; font-weight: bold; font-size: 18px; color: rgb(66, 75, 93);\">4.6 \u8f6f\u4e2d\u65ad\u8c03\u5ea6<\/h3>\n<p class=\"js_darkmode__278\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728 4.5 \u54b1\u4eec\u770b\u5230\u4e86\u5982\u679c\u7cfb\u7edf\u6001 CPU \u53d1\u9001\u7f51\u7edc\u5305\u4e0d\u591f\u7528\u7684\u65f6\u5019\uff0c\u4f1a\u8c03\u7528 __netif_schedule \u89e6\u53d1\u4e00\u4e2a\u8f6f\u4e2d\u65ad\u3002\u8be5\u51fd\u6570\u4f1a\u8fdb\u5165\u5230 __netif_reschedule\uff0c\u7531\u5b83\u6765\u5b9e\u9645\u53d1\u51fa NET_TX_SOFTIRQ \u7c7b\u578b\u8f6f\u4e2d\u65ad\u3002<\/p>\n<p class=\"js_darkmode__279\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u8f6f\u4e2d\u65ad\u662f\u7531\u5185\u6838\u7ebf\u7a0b\u6765\u8fd0\u884c\u7684\uff0c\u8be5\u7ebf\u7a0b\u4f1a\u8fdb\u5165\u5230 net_tx_action \u51fd\u6570\uff0c\u5728\u8be5\u51fd\u6570\u4e2d\u80fd\u83b7\u53d6\u5230\u53d1\u9001\u961f\u5217\uff0c\u5e76\u4e5f\u6700\u7ec8\u8c03\u7528\u5230\u9a71\u52a8\u7a0b\u5e8f\u91cc\u7684\u5165\u53e3\u51fd\u6570 dev_hard_start_xmit\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages img_loading\" src=\"data:image\/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGBgAAAABQABh6FO1AAAAABJRU5ErkJggg==\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.8336106489184693\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNYsGqxicD45mB3SES9U7W7noexasRKmqKsFnZbSk0YOXOMBEXU1sI1hw\/640?wx_fmt=png\" data-type=\"png\" data-w=\"601\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" \/><\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__281\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__282\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/core\/dev.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">inline<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">void<\/span>\u00a0__netif_reschedule(struct\u00a0Qdisc\u00a0*q)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0sd\u00a0=\u00a0&amp;__get_cpu_var(softnet_data);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0q-&gt;next_sched\u00a0=\u00a0<span data-darkmode-color-16207924526368=\"rgb(86, 182, 194)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(86, 182, 194)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">NULL<\/span>;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0*sd-&gt;output_queue_tailp\u00a0=\u00a0q;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0sd-&gt;output_queue_tailp\u00a0=\u00a0&amp;q-&gt;next_sched;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0raise_softirq_irqoff(NET_TX_SOFTIRQ);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__283\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u8be5\u51fd\u6570\u91cc\u5728\u8f6f\u4e2d\u65ad\u80fd\u8bbf\u95ee\u5230\u7684 softnet_data \u91cc\u8bbe\u7f6e\u4e86\u8981\u53d1\u9001\u7684\u6570\u636e\u961f\u5217\uff0c\u6dfb\u52a0\u5230\u4e86 output_queue \u91cc\u4e86\u3002\u7d27\u63a5\u7740\u89e6\u53d1\u4e86 NET_TX_SOFTIRQ \u7c7b\u578b\u7684\u8f6f\u4e2d\u65ad\u3002\uff08T \u4ee3\u8868 transmit \u4f20\u8f93\uff09<\/p>\n<p class=\"js_darkmode__284\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u8f6f\u4e2d\u65ad\u7684\u5165\u53e3\u4ee3\u7801\u6211\u8fd9\u91cc\u4e5f\u4e0d\u8be6\u7ec6\u6252\u4e86\uff0c\u611f\u5174\u8da3\u7684\u540c\u5b66\u53c2\u8003<a href=\"https:\/\/mp.weixin.qq.com\/s?__biz=MjM5Njg5NDgwNA==&amp;mid=2247484058&amp;idx=1&amp;sn=a2621bc27c74b313528eefbc81ee8c0f&amp;scene=21#wechat_redirect\" data-linktype=\"2\" data-darkmode-color-16207924526368=\"rgb(235, 97, 97)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)|rgb(235, 97, 97)\">\u300a\u56fe\u89e3Linux\u7f51\u7edc\u5305\u63a5\u6536\u8fc7\u7a0b\u300b<\/a>\u4e00\u6587\u4e2d\u7684 3.2 \u5c0f\u8282 &#8211; ksoftirqd\u5185\u6838\u7ebf\u7a0b\u5904\u7406\u8f6f\u4e2d\u65ad\u3002<\/p>\n<p class=\"js_darkmode__285\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u4eec\u76f4\u63a5\u4ece NET_TX_SOFTIRQ softirq \u6ce8\u518c\u7684\u56de\u8c03\u51fd\u6570 net_tx_action\u8bb2\u8d77\u3002\u7528\u6237\u6001\u8fdb\u7a0b\u89e6\u53d1\u5b8c\u8f6f\u4e2d\u65ad\u4e4b\u540e\uff0c\u4f1a\u6709\u4e00\u4e2a\u8f6f\u4e2d\u65ad\u5185\u6838\u7ebf\u7a0b\u4f1a\u6267\u884c\u5230 net_tx_action\u3002<\/p>\n<p class=\"js_darkmode__286\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\"><strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u7262\u8bb0\uff0c\u8fd9\u4ee5\u540e\u53d1\u9001\u6570\u636e\u6d88\u8017\u7684 CPU \u5c31\u90fd\u663e\u793a\u5728 si \u8fd9\u91cc\u4e86\uff0c\u4e0d\u4f1a\u6d88\u8017\u7528\u6237\u8fdb\u7a0b\u7684\u7cfb\u7edf\u65f6\u95f4\u4e86<\/strong>\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__288\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__289\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/core\/dev.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0void\u00a0net_tx_action(struct\u00a0softirq_action\u00a0*h)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__290\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u901a\u8fc7\u00a0softnet_data\u00a0\u83b7\u53d6\u53d1\u9001\u961f\u5217<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0softnet_data\u00a0*sd\u00a0=\u00a0&amp;__get_cpu_var(softnet_data);<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__291\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u00a0\u5982\u679c\u00a0output\u00a0queue\u00a0\u4e0a\u6709\u00a0qdisc<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(sd-&gt;output_queue)\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__292\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u00a0\u5c06\u00a0head\u00a0\u6307\u5411\u7b2c\u4e00\u4e2a\u00a0qdisc<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0head\u00a0=\u00a0sd-&gt;output_queue;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span class=\"js_darkmode__293\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u904d\u5386\u00a0qdsics\u00a0\u5217\u8868<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">while<\/span>\u00a0(head)\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0Qdisc\u00a0*q\u00a0=\u00a0head;<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0head\u00a0=\u00a0head-&gt;next_sched;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0<span class=\"js_darkmode__294\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u53d1\u9001\u6570\u636e<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0qdisc_run(q);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__295\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u8f6f\u4e2d\u65ad\u8fd9\u91cc\u4f1a\u83b7\u53d6 softnet_data\u3002\u524d\u9762\u6211\u4eec\u770b\u5230\u8fdb\u7a0b\u5185\u6838\u6001\u5728\u8c03\u7528 __netif_reschedule \u7684\u65f6\u5019\u628a\u53d1\u9001\u961f\u5217\u5199\u5230 softnet_data \u7684 output_queue \u91cc\u4e86\u3002\u8f6f\u4e2d\u65ad\u5faa\u73af\u904d\u5386 sd-&gt;output_queue \u53d1\u9001\u6570\u636e\u5e27\u3002<\/p>\n<p class=\"js_darkmode__296\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6765\u770b qdisc_run\uff0c\u5b83\u548c\u8fdb\u7a0b\u7528\u6237\u6001\u4e00\u6837\uff0c\u4e5f\u4f1a\u8c03\u7528\u5230 __qdisc_run\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__298\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__299\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0include\/net\/pkt_sched.h<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0inline\u00a0void\u00a0qdisc_run(struct\u00a0Qdisc\u00a0*q)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(qdisc_run_begin(q))<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0__qdisc_run(q);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__300\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7136\u540e\u4e00\u6837\u5c31\u662f\u8fdb\u5165 qdisc_restart =&gt; sch_direct_xmit\uff0c\u76f4\u5230\u9a71\u52a8\u7a0b\u5e8f\u51fd\u6570 dev_hard_start_xmit\u3002<\/p>\n<h3 class=\"js_darkmode__301\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"margin-top: 24px; margin-bottom: 12px; font-weight: bold; font-size: 18px; color: rgb(66, 75, 93);\">4.7 igb \u7f51\u5361\u9a71\u52a8\u53d1\u9001<\/h3>\n<p class=\"js_darkmode__302\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u4eec\u524d\u9762\u770b\u5230\uff0c\u65e0\u8bba\u662f\u5bf9\u4e8e\u7528\u6237\u8fdb\u7a0b\u7684\u5185\u6838\u6001\uff0c\u8fd8\u662f\u5bf9\u4e8e\u8f6f\u4e2d\u65ad\u4e0a\u4e0b\u6587\uff0c\u90fd\u4f1a\u8c03\u7528\u5230\u7f51\u7edc\u8bbe\u5907\u5b50\u7cfb\u7edf\u4e2d\u7684 dev_hard_start_xmit \u51fd\u6570\u3002\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c\u4f1a\u8c03\u7528\u5230\u9a71\u52a8\u91cc\u7684\u53d1\u9001\u51fd\u6570 igb_xmit_frame\u3002<\/p>\n<p class=\"js_darkmode__303\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u9a71\u52a8\u51fd\u6570\u91cc\uff0c\u5c06 skb \u4f1a\u6302\u5230 RingBuffer\u4e0a\uff0c\u9a71\u52a8\u8c03\u7528\u5b8c\u6bd5\u540e\uff0c\u6570\u636e\u5305\u5c06\u771f\u6b63\u4ece\u7f51\u5361\u53d1\u9001\u51fa\u53bb\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNCibicYkezt2Mz8oaq1DWJuPEcGPHn0XLKtAGHmm75GoAIg6hUlxJXJlA\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.9139414802065404\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNCibicYkezt2Mz8oaq1DWJuPEcGPHn0XLKtAGHmm75GoAIg6hUlxJXJlA\/640?wx_fmt=png\" data-type=\"png\" data-w=\"581\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__304\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u4eec\u6765\u770b\u770b\u5b9e\u9645\u7684\u6e90\u7801\uff1a<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__306\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__307\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0net\/core\/dev.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">int\u00a0dev_hard_start_xmit(struct\u00a0sk_buff\u00a0*skb,\u00a0struct\u00a0net_device\u00a0*dev,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0struct\u00a0netdev_queue\u00a0*txq)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__308\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u83b7\u53d6\u8bbe\u5907\u7684\u56de\u8c03\u51fd\u6570\u96c6\u5408\u00a0ops<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">const<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0net_device_ops\u00a0*ops\u00a0=\u00a0dev-&gt;netdev_ops;<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__309\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u83b7\u53d6\u8bbe\u5907\u652f\u6301\u7684\u529f\u80fd\u5217\u8868<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0features\u00a0=\u00a0netif_skb_features(skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__310\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u8c03\u7528\u9a71\u52a8\u7684\u00a0ops\u00a0\u91cc\u9762\u7684\u53d1\u9001\u56de\u8c03\u51fd\u6570\u00a0ndo_start_xmit\u00a0\u5c06\u6570\u636e\u5305\u4f20\u7ed9\u7f51\u5361\u8bbe\u5907<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0skb_len\u00a0=\u00a0skb-&gt;len;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0rc\u00a0=\u00a0ops-&gt;ndo_start_xmit(skb,\u00a0dev);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__311\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5176\u4e2d ndo_start_xmit \u662f\u7f51\u5361\u9a71\u52a8\u8981\u5b9e\u73b0\u7684\u4e00\u4e2a\u51fd\u6570\uff0c\u662f\u5728 net_device_ops \u4e2d\u5b9a\u4e49\u7684\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__313\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__314\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0include\/linux\/netdevice.h<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0net_device_ops\u00a0{<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">netdev_tx_t<\/span>\u00a0\u00a0(*ndo_start_xmit)\u00a0(struct\u00a0sk_buff\u00a0*skb,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0struct\u00a0net_device\u00a0*dev);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__315\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728 igb \u7f51\u5361\u9a71\u52a8\u6e90\u7801\u4e2d\uff0c\u6211\u4eec\u627e\u5230\u4e86\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__317\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__318\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0drivers\/net\/ethernet\/intel\/igb\/igb_main.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">const<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">struct\u00a0net_device_ops\u00a0igb_netdev_ops\u00a0=\u00a0{<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0.ndo_open\u00a0\u00a0=\u00a0igb_open,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0.ndo_stop\u00a0\u00a0=\u00a0igb_close,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0.ndo_start_xmit\u00a0\u00a0=\u00a0igb_xmit_frame,\u00a0<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0...<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>};<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__319\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4e5f\u5c31\u662f\u8bf4\uff0c\u5bf9\u4e8e\u7f51\u7edc\u8bbe\u5907\u5c42\u5b9a\u4e49\u7684 ndo_start_xmit\uff0c igb \u7684\u5b9e\u73b0\u51fd\u6570\u662f igb_xmit_frame\u3002\u8fd9\u4e2a\u51fd\u6570\u662f\u5728\u7f51\u5361\u9a71\u52a8\u521d\u59cb\u5316\u7684\u65f6\u5019\u88ab\u8d4b\u503c\u7684\u3002\u5177\u4f53\u521d\u59cb\u5316\u8fc7\u7a0b\u53c2\u89c1<a href=\"https:\/\/mp.weixin.qq.com\/s?__biz=MjM5Njg5NDgwNA==&amp;mid=2247484058&amp;idx=1&amp;sn=a2621bc27c74b313528eefbc81ee8c0f&amp;scene=21#wechat_redirect\" data-linktype=\"2\" data-darkmode-color-16207924526368=\"rgb(235, 97, 97)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)|rgb(235, 97, 97)\">\u300a\u56fe\u89e3Linux\u7f51\u7edc\u5305\u63a5\u6536\u8fc7\u7a0b\u300b<\/a>\u4e00\u6587\u4e2d\u7684 2.4 \u8282\uff0c\u7f51\u5361\u9a71\u52a8\u521d\u59cb\u5316\u3002<\/p>\n<p class=\"js_darkmode__320\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6240\u4ee5\u5728\u4e0a\u9762\u7f51\u7edc\u8bbe\u5907\u5c42\u8c03\u7528 ops-&gt;ndo_start_xmit \u7684\u65f6\u5019\uff0c\u4f1a\u5b9e\u9645\u4e0a\u8fdb\u5165 igb_xmit_frame \u8fd9\u4e2a\u51fd\u6570\u4e2d\u3002\u6211\u4eec\u8fdb\u5165\u8fd9\u4e2a\u51fd\u6570\u6765\u770b\u770b\u9a71\u52a8\u7a0b\u5e8f\u662f\u5982\u4f55\u5de5\u4f5c\u7684\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__322\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__323\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0drivers\/net\/ethernet\/intel\/igb\/igb_main.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0netdev_tx_t\u00a0igb_xmit_frame(struct\u00a0sk_buff\u00a0*skb,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0struct\u00a0net_device\u00a0*netdev)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0......<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">return<\/span>\u00a0igb_xmit_frame_ring(skb,\u00a0igb_tx_queue_mapping(adapter,\u00a0skb));<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">netdev_tx_t\u00a0igb_xmit_frame_ring(struct\u00a0sk_buff\u00a0*skb,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0struct\u00a0igb_ring\u00a0*tx_ring)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__324\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u83b7\u53d6TX\u00a0Queue\u00a0\u4e2d\u4e0b\u4e00\u4e2a\u53ef\u7528\u7f13\u51b2\u533a\u4fe1\u606f<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0first\u00a0=\u00a0&amp;tx_ring-&gt;tx_buffer_info[tx_ring-&gt;next_to_use];<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0first-&gt;skb\u00a0=\u00a0skb;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0first-&gt;bytecount\u00a0=\u00a0skb-&gt;len;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0first-&gt;gso_segs\u00a0=\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">1<\/span>;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__325\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/igb_tx_map \u51fd\u6570\u51c6\u5907\u7ed9\u8bbe\u5907\u53d1\u9001\u7684\u6570\u636e\u3002<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0igb_tx_map(tx_ring,\u00a0first,\u00a0hdr_len);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__326\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u8fd9\u91cc\u4ece\u7f51\u5361\u7684\u53d1\u9001\u961f\u5217\u7684 RingBuffer \u4e2d\u53d6\u4e0b\u6765\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u5c06 skb \u6302\u5230\u5143\u7d20\u4e0a\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNwYLpPquCuztmAAqmcV41gzMST63ovYfoD96CgPcBArWJTI1D0nwBEw\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.25277161862527714\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNwYLpPquCuztmAAqmcV41gzMST63ovYfoD96CgPcBArWJTI1D0nwBEw\/640?wx_fmt=png\" data-type=\"png\" data-w=\"451\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__327\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">igb_tx_map \u51fd\u6570\u5904\u7406\u5c06 skb \u6570\u636e\u6620\u5c04\u5230\u7f51\u5361\u53ef\u8bbf\u95ee\u7684\u5185\u5b58 DMA \u533a\u57df\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__329\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__330\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0drivers\/net\/ethernet\/intel\/igb\/igb_main.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0void\u00a0igb_tx_map(struct\u00a0igb_ring\u00a0*tx_ring,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0struct\u00a0igb_tx_buffer\u00a0*first,<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0const\u00a0u8\u00a0hdr_len)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__331\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u83b7\u53d6\u4e0b\u4e00\u4e2a\u53ef\u7528\u63cf\u8ff0\u7b26\u6307\u9488<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0tx_desc\u00a0=\u00a0IGB_TX_DESC(tx_ring,\u00a0i);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__332\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u4e3a\u00a0skb-&gt;data\u00a0\u6784\u9020\u5185\u5b58\u6620\u5c04\uff0c\u4ee5\u5141\u8bb8\u8bbe\u5907\u901a\u8fc7\u00a0DMA\u00a0\u4ece\u00a0RAM\u00a0\u4e2d\u8bfb\u53d6\u6570\u636e<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0dma\u00a0=\u00a0dma_map_single(tx_ring-&gt;dev,\u00a0skb-&gt;data,\u00a0size,\u00a0DMA_TO_DEVICE);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__333\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u904d\u5386\u8be5\u6570\u636e\u5305\u7684\u6240\u6709\u5206\u7247,\u4e3a\u00a0skb\u00a0\u7684\u6bcf\u4e2a\u5206\u7247\u751f\u6210\u6709\u6548\u6620\u5c04<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">for<\/span>\u00a0(frag\u00a0=\u00a0&amp;skb_shinfo(skb)-&gt;frags[<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>];;\u00a0frag++)\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0tx_desc-&gt;read.buffer_addr\u00a0=\u00a0cpu_to_le64(dma);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0tx_desc-&gt;read.cmd_type_len\u00a0=\u00a0...;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0tx_desc-&gt;read.olinfo_status\u00a0=\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__334\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u8bbe\u7f6e\u6700\u540e\u4e00\u4e2adescriptor<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0cmd_type\u00a0|=\u00a0size\u00a0|\u00a0IGB_TXD_DCMD;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0tx_desc-&gt;read.cmd_type_len\u00a0=\u00a0cpu_to_le32(cmd_type);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__335\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/*\u00a0Force\u00a0memory\u00a0writes\u00a0to\u00a0complete\u00a0before\u00a0letting\u00a0h\/w\u00a0know\u00a0there<br data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0*\u00a0are\u00a0new\u00a0descriptors\u00a0to\u00a0fetch<br data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0*\/<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0wmb();<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__336\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5f53\u6240\u6709\u9700\u8981\u7684\u63cf\u8ff0\u7b26\u90fd\u5df2\u5efa\u597d\uff0c\u4e14 skb \u7684\u6240\u6709\u6570\u636e\u90fd\u6620\u5c04\u5230 DMA \u5730\u5740\u540e\uff0c\u9a71\u52a8\u5c31\u4f1a\u8fdb\u5165\u5230\u5b83\u7684\u6700\u540e\u4e00\u6b65\uff0c\u89e6\u53d1\u771f\u5b9e\u7684\u53d1\u9001\u3002<\/p>\n<h3 class=\"js_darkmode__337\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"margin-top: 24px; margin-bottom: 12px; font-weight: bold; font-size: 18px; color: rgb(66, 75, 93);\">4.8 \u53d1\u9001\u5b8c\u6210\u786c\u4e2d\u65ad<\/h3>\n<p class=\"js_darkmode__338\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5f53\u6570\u636e\u53d1\u9001\u5b8c\u6210\u4ee5\u540e\uff0c\u5176\u5b9e\u5de5\u4f5c\u5e76\u6ca1\u6709\u7ed3\u675f\u3002\u56e0\u4e3a\u5185\u5b58\u8fd8\u6ca1\u6709\u6e05\u7406\u3002\u5f53\u53d1\u9001\u5b8c\u6210\u7684\u65f6\u5019\uff0c\u7f51\u5361\u8bbe\u5907\u4f1a\u89e6\u53d1\u4e00\u4e2a\u786c\u4e2d\u65ad\u6765\u91ca\u653e\u5185\u5b58\u3002<\/p>\n<p class=\"js_darkmode__339\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728<a href=\"https:\/\/mp.weixin.qq.com\/s?__biz=MjM5Njg5NDgwNA==&amp;mid=2247484058&amp;idx=1&amp;sn=a2621bc27c74b313528eefbc81ee8c0f&amp;scene=21#wechat_redirect\" data-linktype=\"2\" data-darkmode-color-16207924526368=\"rgb(235, 97, 97)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)|rgb(235, 97, 97)\">\u300a\u56fe\u89e3Linux\u7f51\u7edc\u5305\u63a5\u6536\u8fc7\u7a0b\u300b<\/a>\u00a0\u4e00\u6587\u4e2d\u7684 3.1 \u548c 3.2 \u5c0f\u8282\uff0c\u6211\u4eec\u8be6\u7ec6\u8bb2\u8ff0\u8fc7\u786c\u4e2d\u65ad\u548c\u8f6f\u4e2d\u65ad\u7684\u5904\u7406\u8fc7\u7a0b\u3002<\/p>\n<p class=\"js_darkmode__340\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u53d1\u9001\u5b8c\u6210\u786c\u4e2d\u65ad\u91cc\uff0c\u4f1a\u6267\u884c RingBuffer \u5185\u5b58\u7684\u6e05\u7406\u5de5\u4f5c\uff0c\u5982\u56fe\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNvsEmEtnv3YYBYMib8fLSyw8dm6kcZP77zdFWymvg4u8SBs9ttGTAeZA\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.6867469879518072\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNvsEmEtnv3YYBYMib8fLSyw8dm6kcZP77zdFWymvg4u8SBs9ttGTAeZA\/640?wx_fmt=png\" data-type=\"png\" data-w=\"581\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__341\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u518d\u56de\u5934\u770b\u4e00\u4e0b\u786c\u4e2d\u65ad\u89e6\u53d1\u8f6f\u4e2d\u65ad\u7684\u6e90\u7801\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__343\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__344\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0drivers\/net\/ethernet\/intel\/igb\/igb_main.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">inline<\/span>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">void<\/span>\u00a0____napi_schedule(...){<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0list_add_tail(&amp;napi-&gt;poll_list,\u00a0&amp;sd-&gt;poll_list);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0__raise_softirq_irqoff(NET_RX_SOFTIRQ);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__345\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u8fd9\u91cc\u6709\u4e2a\u5f88\u6709\u610f\u601d\u7684\u7ec6\u8282\uff0c\u65e0\u8bba\u786c\u4e2d\u65ad\u662f\u56e0\u4e3a\u662f\u6709\u6570\u636e\u8981\u63a5\u6536\uff0c\u8fd8\u662f\u8bf4\u53d1\u9001\u5b8c\u6210\u901a\u77e5\uff0c<strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u4ece\u786c\u4e2d\u65ad\u89e6\u53d1\u7684\u8f6f\u4e2d\u65ad\u90fd\u662f NET_RX_SOFTIRQ<\/strong>\u3002\u8fd9\u4e2a\u6211\u4eec\u5728\u7b2c\u4e00\u8282\u8bf4\u8fc7\u4e86\uff0c\u8fd9\u662f\u8f6f\u4e2d\u65ad\u7edf\u8ba1\u4e2d RX \u8981\u9ad8\u4e8e TX \u7684\u4e00\u4e2a\u539f\u56e0\u3002<\/p>\n<p class=\"js_darkmode__346\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u597d\u6211\u4eec\u63a5\u7740\u8fdb\u5165\u8f6f\u4e2d\u65ad\u7684\u56de\u8c03\u51fd\u6570 igb_poll\u3002\u5728\u8fd9\u4e2a\u51fd\u6570\u91cc\uff0c\u6211\u4eec\u6ce8\u610f\u5230\u6709\u4e00\u884c igb_clean_tx_irq\uff0c\u53c2\u89c1\u6e90\u7801\uff1a<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__348\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__349\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0drivers\/net\/ethernet\/intel\/igb\/igb_main.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0int\u00a0igb_poll(struct\u00a0napi_struct\u00a0*napi,\u00a0int\u00a0budget)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__350\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/performs\u00a0the\u00a0transmit\u00a0completion\u00a0operations<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">if<\/span>\u00a0(q_vector-&gt;tx.ring)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0\u00a0clean_complete\u00a0=\u00a0igb_clean_tx_irq(q_vector);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0...<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__351\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6211\u4eec\u6765\u770b\u770b\u5f53\u4f20\u8f93\u5b8c\u6210\u7684\u65f6\u5019\uff0cigb_clean_tx_irq \u90fd\u5e72\u5565\u4e86\u3002<\/p>\n<pre data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><code class=\"js_darkmode__353\" data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"overflow-x: auto; padding: 15px 16px 16px; color: rgb(171, 178, 191); display: -webkit-box; font-family: &quot;Operator Mono&quot;, Consolas, Monaco, Menlo, monospace; font-size: 12px; background: rgb(40, 44, 52); border-radius: 5px;\"><span class=\"js_darkmode__354\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/file:\u00a0drivers\/net\/ethernet\/intel\/igb\/igb_main.c<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><span data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">static\u00a0bool\u00a0igb_clean_tx_irq(struct\u00a0igb_q_vector\u00a0*q_vector)<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/span>{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__355\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/free\u00a0the\u00a0skb<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0dev_kfree_skb_any(tx_buffer-&gt;skb);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__356\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/clear\u00a0tx_buffer\u00a0data<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0tx_buffer-&gt;skb\u00a0=\u00a0<span data-darkmode-color-16207924526368=\"rgb(86, 182, 194)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(86, 182, 194)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">NULL<\/span>;<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0dma_unmap_len_set(tx_buffer,\u00a0len,\u00a0<span data-darkmode-color-16207924526368=\"rgb(209, 154, 102)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(209, 154, 102)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">0<\/span>);<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span class=\"js_darkmode__357\" data-darkmode-color-16207924526368=\"rgb(115, 124, 140)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(92, 99, 112)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" data-style=\"color: rgb(92, 99, 112); font-style: italic; line-height: 26px;\">\/\/\u00a0clear\u00a0last\u00a0DMA\u00a0location\u00a0and\u00a0unmap\u00a0remaining\u00a0buffers\u00a0*\/<\/span><br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0<span data-darkmode-color-16207924526368=\"rgb(198, 120, 221)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)|rgb(198, 120, 221)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\">while<\/span>\u00a0(tx_desc\u00a0!=\u00a0eop_desc)\u00a0{<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>\u00a0}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/>}<br data-darkmode-color-16207924526368=\"rgb(171, 178, 191)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(171, 178, 191)\" data-darkmode-bgcolor-16207924526368=\"rgb(49, 54, 63)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(40, 44, 52)\" \/><\/code><\/pre>\n<p class=\"js_darkmode__358\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u65e0\u975e\u5c31\u662f\u6e05\u7406\u4e86 skb\uff0c\u89e3\u9664\u4e86 DMA \u6620\u5c04\u7b49\u7b49\u3002\u5230\u4e86\u8fd9\u4e00\u6b65\uff0c\u4f20\u8f93\u624d\u7b97\u662f\u57fa\u672c\u5b8c\u6210\u4e86\u3002<\/p>\n<p class=\"js_darkmode__359\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4e3a\u5565\u6211\u8bf4\u662f\u57fa\u672c\u5b8c\u6210\uff0c\u800c\u4e0d\u662f\u5168\u90e8\u5b8c\u6210\u4e86\u5462\uff1f\u56e0\u4e3a\u4f20\u8f93\u5c42\u9700\u8981\u4fdd\u8bc1\u53ef\u9760\u6027\uff0c\u6240\u4ee5 skb \u5176\u5b9e\u8fd8\u6ca1\u6709\u5220\u9664\u3002\u5b83\u5f97\u7b49\u6536\u5230\u5bf9\u65b9\u7684 ACK \u4e4b\u540e\u624d\u4f1a\u771f\u6b63\u5220\u9664\uff0c\u90a3\u4e2a\u65f6\u5019\u624d\u7b97\u662f\u5f7b\u5e95\u7684\u53d1\u9001\u5b8c\u6bd5\u3002<\/p>\n<h2 data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><span data-darkmode-color-16207924526368=\"rgb(255,255,255)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(255,255,255)\" data-darkmode-bgcolor-16207924526368=\"rgb(231, 100, 43)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(231, 100, 43)\">\u6700\u540e<\/span><\/h2>\n<p class=\"js_darkmode__360\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7528\u4e00\u5f20\u56fe\u603b\u7ed3\u4e00\u4e0b\u6574\u4e2a\u53d1\u9001\u8fc7\u7a0b<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNC00DTfspwPMWXLjTYWB23MPL7Uz1TsDhgdsdOF920V4GqZwJyZs8gg\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"1.4696673189823874\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNC00DTfspwPMWXLjTYWB23MPL7Uz1TsDhgdsdOF920V4GqZwJyZs8gg\/640?wx_fmt=png\" data-type=\"png\" data-w=\"511\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__361\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4e86\u89e3\u4e86\u6574\u4e2a\u53d1\u9001\u8fc7\u7a0b\u4ee5\u540e\uff0c\u6211\u4eec\u56de\u5934\u518d\u6765\u56de\u987e\u5f00\u7bc7\u63d0\u5230\u7684\u51e0\u4e2a\u95ee\u9898\u3002<\/p>\n<p class=\"js_darkmode__362\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\"><strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">1.\u6211\u4eec\u5728\u76d1\u63a7\u5185\u6838\u53d1\u9001\u6570\u636e\u6d88\u8017\u7684 CPU \u65f6\uff0c\u662f\u5e94\u8be5\u770b sy \u8fd8\u662f si \uff1f<\/strong><\/p>\n<p class=\"js_darkmode__363\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u5728\u7f51\u7edc\u5305\u7684\u53d1\u9001\u8fc7\u7a0b\u4e2d\uff0c\u7528\u6237\u8fdb\u7a0b\uff08\u5728\u5185\u6838\u6001\uff09\u5b8c\u6210\u4e86\u7edd\u5927\u90e8\u5206\u7684\u5de5\u4f5c\uff0c\u751a\u81f3\u8fde\u8c03\u7528\u9a71\u52a8\u7684\u4e8b\u60c5\u90fd\u5e72\u4e86\u3002\u53ea\u6709\u5f53\u5185\u6838\u6001\u8fdb\u7a0b\u88ab\u5207\u8d70\u524d\u624d\u4f1a\u53d1\u8d77\u8f6f\u4e2d\u65ad\u3002\u53d1\u9001\u8fc7\u7a0b\u4e2d\uff0c\u7edd\u5927\u90e8\u5206\uff0890%\uff09\u4ee5\u4e0a\u7684\u5f00\u9500\u90fd\u662f\u5728\u7528\u6237\u8fdb\u7a0b\u5185\u6838\u6001\u6d88\u8017\u6389\u7684\u3002<\/p>\n<p class=\"js_darkmode__364\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u53ea\u6709\u4e00\u5c11\u90e8\u5206\u60c5\u51b5\u4e0b\u624d\u4f1a\u89e6\u53d1\u8f6f\u4e2d\u65ad\uff08NET_TX \u7c7b\u578b\uff09\uff0c\u7531\u8f6f\u4e2d\u65ad ksoftirqd \u5185\u6838\u8fdb\u7a0b\u6765\u53d1\u9001\u3002<\/p>\n<p class=\"js_darkmode__365\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u6240\u4ee5\uff0c\u5728\u76d1\u63a7\u7f51\u7edc IO \u5bf9\u670d\u52a1\u5668\u9020\u6210\u7684 CPU \u5f00\u9500\u7684\u65f6\u5019\uff0c\u4e0d\u80fd\u4ec5\u4ec5\u53ea\u770b si\uff0c\u800c\u662f\u5e94\u8be5\u628a si\u3001sy \u90fd\u8003\u8651\u8fdb\u6765\u3002<\/p>\n<p class=\"js_darkmode__366\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\"><strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">2. \u5728\u670d\u52a1\u5668\u4e0a\u67e5\u770b \/proc\/softirqs\uff0c\u4e3a\u4ec0\u4e48 NET_RX \u8981\u6bd4 NET_TX \u5927\u7684\u591a\u7684\u591a\uff1f<\/strong><\/p>\n<p class=\"js_darkmode__367\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4e4b\u524d\u6211\u8ba4\u4e3a NET_RX \u662f\u8bfb\u53d6\uff0cNET_TX 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data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNyMmfBRBc22wSuW4caOVsZeiaBticLr9tXeRZibyav6AylEwzWibmHUv6RA\/640?wx_fmt=png\" data-type=\"png\" data-w=\"543\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__368\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7ecf\u8fc7\u4eca\u5929\u7684\u6e90\u7801\u5206\u6790\uff0c\u53d1\u73b0\u8fd9\u4e2a\u95ee\u9898\u7684\u539f\u56e0\u6709\u4e24\u4e2a\u3002<\/p>\n<p class=\"js_darkmode__369\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7b2c\u4e00\u4e2a\u539f\u56e0\u662f\u5f53\u6570\u636e\u53d1\u9001\u5b8c\u6210\u4ee5\u540e\uff0c\u901a\u8fc7\u786c\u4e2d\u65ad\u7684\u65b9\u5f0f\u6765\u901a\u77e5\u9a71\u52a8\u53d1\u9001\u5b8c\u6bd5\u3002\u4f46\u662f\u786c\u4e2d\u65ad\u65e0\u8bba\u662f\u6709\u6570\u636e\u63a5\u6536\uff0c\u8fd8\u662f\u5bf9\u4e8e\u53d1\u9001\u5b8c\u6bd5\uff0c\u89e6\u53d1\u7684\u8f6f\u4e2d\u65ad\u90fd\u662f NET_RX_SOFTIRQ\uff0c\u800c\u5e76\u4e0d\u662f NET_TX_SOFTIRQ\u3002<\/p>\n<p class=\"js_darkmode__370\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7b2c\u4e8c\u4e2a\u539f\u56e0\u662f\u5bf9\u4e8e\u8bfb\u6765\u8bf4\uff0c\u90fd\u662f\u8981\u7ecf\u8fc7 NET_RX \u8f6f\u4e2d\u65ad\u7684\uff0c\u90fd\u8d70 ksoftirqd \u5185\u6838\u8fdb\u7a0b\u3002\u800c\u5bf9\u4e8e\u53d1\u9001\u6765\u8bf4\uff0c\u7edd\u5927\u90e8\u5206\u5de5\u4f5c\u90fd\u662f\u5728\u7528\u6237\u8fdb\u7a0b\u5185\u6838\u6001\u5904\u7406\u4e86\uff0c\u53ea\u6709\u7cfb\u7edf\u6001\u914d\u989d\u7528\u5c3d\u624d\u4f1a\u53d1\u51fa NET_TX\uff0c\u8ba9\u8f6f\u4e2d\u65ad\u4e0a\u3002<\/p>\n<p class=\"js_darkmode__371\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7efc\u4e0a\u4e24\u4e2a\u539f\u56e0\uff0c\u90a3\u4e48\u5728\u673a\u5668\u4e0a\u67e5\u770b NET_RX \u6bd4 NET_TX 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3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u8fd9\u91cc\u7684\u5185\u5b58\u62f7\u8d1d\uff0c\u6211\u4eec\u53ea\u7279\u6307\u5f85\u53d1\u9001\u6570\u636e\u7684\u5185\u5b58\u62f7\u8d1d\u3002<\/p>\n<p class=\"js_darkmode__374\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7b2c\u4e00\u6b21\u62f7\u8d1d\u64cd\u4f5c\u662f\u5185\u6838\u7533\u8bf7\u5b8c skb \u4e4b\u540e\uff0c\u8fd9\u65f6\u5019\u4f1a\u5c06\u7528\u6237\u4f20\u9012\u8fdb\u6765\u7684 buffer \u91cc\u7684\u6570\u636e\u5185\u5bb9\u90fd\u62f7\u8d1d\u5230 skb \u4e2d\u3002\u5982\u679c\u8981\u53d1\u9001\u7684\u6570\u636e\u91cf\u6bd4\u8f83\u5927\u7684\u8bdd\uff0c\u8fd9\u4e2a\u62f7\u8d1d\u64cd\u4f5c\u5f00\u9500\u8fd8\u662f\u4e0d\u5c0f\u7684\u3002<\/p>\n<p class=\"js_darkmode__375\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7b2c\u4e8c\u6b21\u62f7\u8d1d\u64cd\u4f5c\u662f\u4ece\u4f20\u8f93\u5c42\u8fdb\u5165\u7f51\u7edc\u5c42\u7684\u65f6\u5019\uff0c\u6bcf\u4e00\u4e2a skb \u90fd\u4f1a\u88ab\u514b\u9686\u4e00\u4e2a\u65b0\u7684\u526f\u672c\u51fa\u6765\u3002\u7f51\u7edc\u5c42\u4ee5\u53ca\u4e0b\u9762\u7684\u9a71\u52a8\u3001\u8f6f\u4e2d\u65ad\u7b49\u7ec4\u4ef6\u5728\u53d1\u9001\u5b8c\u6210\u7684\u65f6\u5019\u4f1a\u5c06\u8fd9\u4e2a\u526f\u672c\u5220\u9664\u3002\u4f20\u8f93\u5c42\u4fdd\u5b58\u7740\u539f\u59cb\u7684 skb\uff0c\u5728\u5f53\u7f51\u7edc\u5bf9\u65b9\u6ca1\u6709 ack \u7684\u65f6\u5019\uff0c\u8fd8\u53ef\u4ee5\u91cd\u65b0\u53d1\u9001\uff0c\u4ee5\u5b9e\u73b0 TCP \u4e2d\u8981\u6c42\u7684\u53ef\u9760\u4f20\u8f93\u3002<\/p>\n<p class=\"js_darkmode__376\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u7b2c\u4e09\u6b21\u62f7\u8d1d\u4e0d\u662f\u5fc5\u987b\u7684\uff0c\u53ea\u6709\u5f53 IP \u5c42\u53d1\u73b0 skb \u5927\u4e8e MTU \u65f6\u624d\u9700\u8981\u8fdb\u884c\u3002\u4f1a\u518d\u7533\u8bf7\u989d\u5916\u7684 skb\uff0c\u5e76\u5c06\u539f\u6765\u7684 skb \u62f7\u8d1d\u4e3a\u591a\u4e2a\u5c0f\u7684 skb\u3002<\/p>\n<blockquote class=\"js_darkmode__377\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(106, 115, 125)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(106, 115, 125)\" data-darkmode-bgcolor-16207924526368=\"rgb(25, 25, 25)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(255, 255, 255)\" data-style=\"font-size: 0.9em; overflow: auto; color: rgb(106, 115, 125); padding: 10px 10px 10px 20px; margin: 0px 8px; border-width: initial; border-style: none; border-color: initial; background: rgb(255, 255, 255); box-shadow: rgba(0, 0, 0, 0.16) 0px 1px 2px -2px, rgba(0, 0, 0, 0.12) 0px 3px 6px 0px, rgba(0, 0, 0, 0.09) 0px 5px 12px 4px;\">\n<p class=\"js_darkmode__378\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(106, 115, 125)|rgb(66, 75, 93)\" data-darkmode-bgcolor-16207924526368=\"rgb(25, 25, 25)\" data-darkmode-original-bgcolor-16207924526368=\"#fff|rgb(255, 255, 255)\" data-style=\"padding-top: 8px; padding-bottom: 8px; word-spacing: 3px; letter-spacing: 1px; font-size: 14px; color: rgb(66, 75, 93); line-height: 24px;\">\u8fd9\u91cc\u63d2\u5165\u4e2a\u9898\u5916\u8bdd\uff0c\u5927\u5bb6\u5728\u7f51\u7edc\u6027\u80fd\u4f18\u5316\u4e2d\u7ecf\u5e38\u542c\u5230\u7684\u96f6\u62f7\u8d1d\uff0c\u6211\u89c9\u5f97\u8fd9\u6709\u70b9\u70b9\u5938\u5f20\u7684\u6210\u5206\u3002TCP \u4e3a\u4e86\u4fdd\u8bc1\u53ef\u9760\u6027\uff0c\u7b2c\u4e8c\u6b21\u7684\u62f7\u8d1d\u6839\u672c\u5c31\u6ca1\u6cd5\u7701\u3002\u5982\u679c\u5305\u518d\u5927\u4e8e MTU \u7684\u8bdd\uff0c\u5206\u7247\u65f6\u7684\u62f7\u8d1d\u540c\u6837\u4e5f\u907f\u514d\u4e0d\u4e86\u3002<\/p>\n<\/blockquote>\n<p class=\"js_darkmode__379\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u770b\u5230\u8fd9\u91cc\uff0c\u76f8\u4fe1\u5185\u6838\u53d1\u9001\u6570\u636e\u5305\u5bf9\u4e8e\u4f60\u6765\u8bf4\uff0c\u5df2\u7ecf\u4e0d\u518d\u662f\u4e00\u4e2a\u5b8c\u5168\u4e0d\u61c2\u7684\u9ed1\u76d2\u4e86\u3002\u672c\u6587\u54ea\u6015\u4f60\u53ea\u770b\u61c2\u5341\u5206\u4e4b\u4e00\uff0c\u4f60\u4e5f\u5df2\u7ecf\u638c\u63e1\u4e86\u8fd9\u4e2a\u9ed1\u76d2\u7684\u6253\u5f00\u65b9\u5f0f\u3002\u8fd9\u5728\u4f60\u5c06\u6765\u4f18\u5316\u7f51\u7edc\u6027\u80fd\u65f6\u4f60\u5c31\u4f1a\u77e5\u9053\u4ece\u54ea\u513f\u4e0b\u624b\u4e86\u3002<\/p>\n<p class=\"js_darkmode__380\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u8fd8\u6123\u7740\u5e72\u5565\uff0c\u8d76\u7d27\u5e2e\u98de\u54e5<strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">\u8d5e\u3001\u518d\u770b\u3001\u8f6c\u53d1<\/strong>\u4e09\u8fde\u8d70\u8d77\uff01<\/p>\n<p class=\"js_darkmode__381\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\"><strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(66, 75, 93)\">Github:<\/strong>https:\/\/github.com\/yanfeizhang\/coder-kung-fu<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwp9tt3V9alZgGndUXpRE0e4ImpqAMiajAaVnxEVFVSfSDf58P6rEjicIYtPJcCT13TxTicXkFNL42l7w\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.4012738853503185\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwp9tt3V9alZgGndUXpRE0e4ImpqAMiajAaVnxEVFVSfSDf58P6rEjicIYtPJcCT13TxTicXkFNL42l7w\/640?wx_fmt=png\" data-type=\"png\" data-w=\"471\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<section class=\"js_darkmode__382\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-website=\"https:\/\/www.mdnice.com\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(0,0,0)\" data-style=\"font-size: 16px; color: black; line-height: 1.6; letter-spacing: 0px; 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93);\">\u7531\u4e8e\u672c\u6587\u6bd4\u8f83\u957f\uff0c\u5728\u516c\u4f17\u53f7\u4e0a\u770b\u8d77\u6765\u786e\u5b9e\u662f\u6709\u70b9\u8d39\u52b2\u3002\u6240\u4ee5\u98de\u54e5\u641e\u4e86\u4e2a pdf\uff0c\u5e26\u76ee\u5f55\u7ed3\u6784\uff0c\u53ef\u5feb\u901f\u8df3\u8f6c\uff0c\u770b\u8d77\u6765\u66f4\u65b9\u4fbf\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNGicDDyuy5vNTmzUfdPP8icHKlWviar0pD8NiazbLH3Vr9aGaERZib4n0yQQ\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.7053941908713693\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/BBjAFF4hcwqUG6AE07rYfdAq7rDK2kZNGicDDyuy5vNTmzUfdPP8icHKlWviar0pD8NiazbLH3Vr9aGaERZib4n0yQQ\/640?wx_fmt=png\" data-type=\"png\" data-w=\"1446\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<p class=\"js_darkmode__385\" data-tool=\"mdnice\u7f16\u8f91\u5668\" data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(0,0,0)|rgb(66, 75, 93)\" data-style=\"padding-top: 8px; padding-bottom: 8px; line-height: 26px; word-spacing: 3px; letter-spacing: 1px; color: rgb(66, 75, 93);\">\u4e0d\u8fc7\u83b7\u53d6\u65b9\u5f0f\u4ecd\u7136\u6709\u70b9\u5c0f\u95e8\u69db\uff1a<strong data-darkmode-color-16207924526368=\"rgb(132, 144, 168)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(0,0,0)|rgb(66, 75, 93)\">\u5e26\u4efb\u610f\u63a8\u8350\u8bed\u8f6c\u53d1\u672c\u6587\u5230\u670b\u53cb\u5708\uff0c\u52a0\u98de\u54e5\u5fae\u4fe1\u77e5\u4f1a<\/strong>\u5373\u53ef\u3002<\/p>\n<p data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(0,0,0)\"><img decoding=\"async\" class=\"rich_pages\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_jpg\/BBjAFF4hcwrswJz53MBtwFEltFgNo6uiaZNRYC3xqgXXDibW72pmBEJpOiaTY39weOB9iaLrmN0LZXhmgC2v8snvUw\/640?wx_fmt=jpeg&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\" crossorigin=\"anonymous\" data-galleryid=\"\" data-ratio=\"0.9975845410628019\" data-s=\"300,640\" data-src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_jpg\/BBjAFF4hcwrswJz53MBtwFEltFgNo6uiaZNRYC3xqgXXDibW72pmBEJpOiaTY39weOB9iaLrmN0LZXhmgC2v8snvUw\/640?wx_fmt=jpeg\" data-type=\"jpeg\" data-w=\"414\" data-darkmode-color-16207924526368=\"rgb(163, 163, 163)\" data-darkmode-original-color-16207924526368=\"#fff|rgb(0,0,0)|rgb(0,0,0)\" data-fail=\"0\" \/><\/p>\n<\/section>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u539f\u6587\u5730\u5740 &nbsp; \u539f\u521b\u00a0\u5f20\u5f66\u98deal<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[119],"class_list":["post-5226","post","type-post","status-publish","format-standard","hentry","tag-03-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5226","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=5226"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5226\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=5226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=5226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=5226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}