{"id":34988,"date":"2025-03-11T15:09:37","date_gmt":"2025-03-11T07:09:37","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=34988"},"modified":"2025-03-11T15:09:37","modified_gmt":"2025-03-11T07:09:37","slug":"ebpf%e5%9c%a8%e6%99%ba%e8%83%bd%e7%bd%91%e5%8d%a1%e4%b8%ad%e7%9a%84%e5%ba%94%e7%94%a8%e6%9c%89%e5%93%aa%e4%ba%9b%e5%88%9b%e6%96%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/34988.html","title":{"rendered":"eBPF\u5728\u667a\u80fd\u7f51\u5361\u4e2d\u7684\u5e94\u7528\u6709\u54ea\u4e9b\u521b\u65b0\uff1f"},"content":{"rendered":"<p style=\"text-align: center;\">\n<p><img decoding=\"async\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2025\/03\/c4A2WBoWI.jpg\" alt=\"eBPF\u5728\u667a\u80fd\u7f51\u5361\u4e2d\u7684\u5e94\u7528\u6709\u54ea\u4e9b\u521b\u65b0\uff1f\" ><\/p>\n<\/p>\n<hr>\n<p>\u5728\u4e91\u8ba1\u7b97\u4e0e5G\u6280\u672f\u9ad8\u901f\u53d1\u5c55\u7684\u4eca\u5929\uff0c\u6570\u636e\u4e2d\u5fc3\u5bf9\u7f51\u7edc\u6027\u80fd\u7684\u9700\u6c42\u6b63\u7ecf\u5386\u6307\u6570\u7ea7\u589e\u957f\u3002\u4f20\u7edf\u7684\u670d\u52a1\u5668\u67b6\u6784\u4e2d\uff0c\u7f51\u7edc\u6570\u636e\u5305\u5904\u7406\u3001\u5b89\u5168\u7b56\u7565\u6267\u884c\u7b49\u4efb\u52a1\u9ad8\u5ea6\u4f9d\u8d56CPU\uff0c\u5bfc\u81f4\u8ba1\u7b97\u8d44\u6e90\u88ab\u5927\u91cf\u5360\u7528\uff0c\u751a\u81f3\u6210\u4e3a\u6027\u80fd\u74f6\u9888\u3002\u5728\u6b64\u80cc\u666f\u4e0b\uff0c<strong>\u667a\u80fd\u7f51\u5361\uff08SmartNIC\uff09<\/strong>\u901a\u8fc7\u786c\u4ef6\u52a0\u901f\u4e0e\u53ef\u7f16\u7a0b\u80fd\u529b\uff0c\u9010\u6e10\u6210\u4e3a\u63d0\u5347\u7f51\u7edc\u6548\u7387\u7684\u5173\u952e\u7ec4\u4ef6\u3002\u800c<strong><a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\uff08Extended Berkeley Packet Filter\uff09<\/strong>\u8fd9\u4e00\u9769\u547d\u6027\u6280\u672f\u7684\u5f15\u5165\uff0c\u5219\u4e3a\u667a\u80fd\u7f51\u5361\u5e26\u6765\u4e86\u524d\u6240\u672a\u6709\u7684\u7075\u6d3b\u6027\u4e0e\u521b\u65b0\u7a7a\u95f4\u2014\u2014\u5b83\u4e0d\u4ec5\u91cd\u65b0\u5b9a\u4e49\u4e86\u7f51\u7edc\u6570\u636e\u9762\u7684\u5904\u7406\u8303\u5f0f\uff0c\u66f4\u5728\u5b89\u5168\u3001\u53ef\u89c2\u6d4b\u6027\u3001\u8d44\u6e90\u7ba1\u7406\u7b49\u9886\u57df\u5f00\u8f9f\u4e86\u65b0\u7684\u53ef\u80fd\u6027\u3002<\/p>\n<hr>\n<h3 id=\"\u4e00-\u667a\u80fd\u7f51\u5361\u7684\u6f14\u8fdb\u4e0eebpf\u7684\u6280\u672f\u57fa\u56e0\">\u4e00\u3001\u667a\u80fd\u7f51\u5361\u7684\u6f14\u8fdb\u4e0e<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\u7684\u6280\u672f\u57fa\u56e0<\/h3>\n<p>\u667a\u80fd\u7f51\u5361\u4ece\u65e9\u671f\u7684\u56fa\u5b9a\u529f\u80fd\u52a0\u901f\u5668\uff08\u5982TCP\u5378\u8f7d\u5f15\u64ceTOE\uff09\uff0c\u53d1\u5c55\u5230\u652f\u6301FPGA\u6216ASIC\u53ef\u7f16\u7a0b\u7684\u5f62\u6001\uff0c\u5176\u6838\u5fc3\u76ee\u6807\u59cb\u7ec8\u662f<strong>\u5c06CPU\u4ece\u7e41\u91cd\u7684\u7f51\u7edc\u4efb\u52a1\u4e2d\u89e3\u653e\u51fa\u6765<\/strong>\u3002\u7136\u800c\uff0c\u4f20\u7edf\u65b9\u6848\u5b58\u5728\u663e\u8457\u5c40\u9650\uff1aFPGA\u5f00\u53d1\u95e8\u69db\u9ad8\u3001ASIC\u7075\u6d3b\u6027\u4e0d\u8db3\uff0c\u96be\u4ee5\u9002\u5e94\u4e91\u539f\u751f\u73af\u5883\u4e2d\u9891\u7e41\u53d8\u5316\u7684\u4e1a\u52a1\u9700\u6c42\u3002<\/p>\n<p>\u6b64\u65f6\uff0c<strong>eBPF\u51ed\u501f\u5176\u5b89\u5168\u3001\u9ad8\u6548\u7684\u5185\u6838\u7ea7\u53ef\u7f16\u7a0b\u80fd\u529b<\/strong>\uff0c\u6210\u4e3a\u7834\u5c40\u7684\u5173\u952e\u3002eBPF\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u65e0\u9700\u4fee\u6539\u5185\u6838\u6e90\u7801\u7684\u524d\u63d0\u4e0b\uff0c\u52a8\u6001\u52a0\u8f7d\u5e76\u8fd0\u884c\u6c99\u7bb1\u5316\u7684\u7a0b\u5e8f\uff0c\u76f4\u63a5\u64cd\u63a7\u7f51\u7edc\u6570\u636e\u6d41\u3002\u5f53eBPF\u4e0e\u667a\u80fd\u7f51\u5361\u7684\u786c\u4ef6\u52a0\u901f\u80fd\u529b\u7ed3\u5408\u65f6\uff0c\u8fd9\u79cd\u201c\u8f6f\u786c\u534f\u540c\u201d\u67b6\u6784\u80fd\u591f\u5b9e\u73b0<strong>\u8d85\u4f4e\u5ef6\u8fdf\u7684\u7f51\u7edc\u5904\u7406<\/strong>\u4e0e<strong>\u6781\u81f4\u7684\u8d44\u6e90\u5229\u7528\u7387<\/strong>\u3002\u4f8b\u5982\uff0c\u5fae\u8f6fAzure\u5728\u5176\u667a\u80fd\u7f51\u5361\u65b9\u6848\u4e2d\u91c7\u7528eBPF\uff0c\u6210\u529f\u5c06\u865a\u62df\u5316\u7f51\u7edc\u5ef6\u8fdf\u964d\u4f4e\u81f3\u5fae\u79d2\u7ea7\uff0c\u540c\u65f6\u51cf\u5c1180%\u7684CPU\u5f00\u9500\u3002<\/p>\n<hr>\n<h3 id=\"\u4e8c-ebpf\u5728\u667a\u80fd\u7f51\u5361\u4e2d\u7684\u56db\u5927\u521b\u65b0\u573a\u666f\">\u4e8c\u3001eBPF\u5728\u667a\u80fd\u7f51\u5361\u4e2d\u7684\u56db\u5927\u521b\u65b0\u573a\u666f<\/h3>\n<h4 id=\"1-\u534f\u8bae\u6808\u5378\u8f7d\u4e0e\u7f51\u7edc\u52a0\u901f\">1. <strong>\u534f\u8bae\u6808\u5378\u8f7d\u4e0e\u7f51\u7edc\u52a0\u901f<\/strong><\/h4>\n<p>\u4f20\u7edf\u667a\u80fd\u7f51\u5361\u901a\u5e38\u53ea\u652f\u6301\u56fa\u5b9a\u534f\u8bae\uff08\u5982TCP\/IP\uff09\u7684\u786c\u4ef6\u5378\u8f7d\uff0c\u800ceBPF\u7684\u5f15\u5165\u4f7f\u5f97<strong>\u81ea\u5b9a\u4e49\u534f\u8bae\u5904\u7406<\/strong>\u6210\u4e3a\u53ef\u80fd\u3002\u901a\u8fc7\u5c06eBPF\u7a0b\u5e8f\u7f16\u8bd1\u4e3a\u667a\u80fd\u7f51\u5361\u652f\u6301\u7684\u6307\u4ee4\u96c6\uff08\u5982P4\u6216\u4e13\u7528\u5b57\u8282\u7801\uff09\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u52a8\u6001\u90e8\u7f72\u9488\u5bf9\u7279\u5b9a\u5e94\u7528\u573a\u666f\u7684\u4f18\u5316\u903b\u8f91\u3002<\/p>\n<ul>\n<li><strong>\u6848\u4f8b<\/strong>\uff1a\u5728\u91d1\u878d\u4ea4\u6613\u573a\u666f\u4e2d\uff0c\u9ad8\u9891\u4ea4\u6613\u7cfb\u7edf\u9700\u8981\u6781\u4f4e\u5ef6\u8fdf\u7684UDP\u901a\u4fe1\u3002\u901a\u8fc7eBPF\u7a0b\u5e8f\u5b9a\u5236\u62a5\u6587\u6821\u9a8c\u4e0e\u8def\u7531\u89c4\u5219\uff0c\u667a\u80fd\u7f51\u5361\u53ef\u76f4\u63a5\u5b8c\u6210\u5173\u952e\u8def\u5f84\u5904\u7406\uff0c\u7ed5\u8fc7\u5185\u6838\u534f\u8bae\u6808\uff0c\u5c06\u7aef\u5230\u7aef\u5ef6\u8fdf\u538b\u7f29\u81f31\u5fae\u79d2\u4ee5\u5185\u3002\n<\/li>\n<li><strong>\u4f18\u52bf<\/strong>\uff1a<em>\u907f\u514d\u901a\u7528\u534f\u8bae\u6808\u7684\u5197\u4f59\u64cd\u4f5c<\/em>\uff0c\u76f4\u63a5\u5339\u914d\u4e1a\u52a1\u9700\u6c42\uff0c\u63d0\u5347\u541e\u5410\u91cf\u5e76\u964d\u4f4e\u6296\u52a8\u3002\n<\/li>\n<\/ul>\n<h4 id=\"2-\u5b89\u5168\u7b56\u7565\u7684\u5b9e\u65f6\u52a0\u8f7d\u4e0e\u6267\u884c\">2. <strong>\u5b89\u5168\u7b56\u7565\u7684\u5b9e\u65f6\u52a0\u8f7d\u4e0e\u6267\u884c<\/strong><\/h4>\n<p>\u5b89\u5168\u9632\u62a4\u662f\u667a\u80fd\u7f51\u5361\u7684\u6838\u5fc3\u529f\u80fd\u4e4b\u4e00\uff0c\u4f46\u4f20\u7edf\u65b9\u6848\u4f9d\u8d56\u4e8e\u9759\u6001\u89c4\u5219\u5e93\u6216\u56fa\u5b9a\u6a21\u5f0f\u7684\u6d41\u91cf\u8fc7\u6ee4\u3002eBPF\u7684<strong>\u52a8\u6001\u52a0\u8f7d\u7279\u6027<\/strong>\u4f7f\u5f97\u5b89\u5168\u7b56\u7565\u80fd\u591f\u968f\u653b\u51fb\u6a21\u5f0f\u7684\u53d8\u5316\u5b9e\u65f6\u66f4\u65b0\u3002<\/p>\n<ul>\n<li><strong>\u5e94\u7528\u573a\u666f<\/strong>\uff1a\u5728DDoS\u9632\u5fa1\u4e2d\uff0c\u667a\u80fd\u7f51\u5361\u53ef\u901a\u8fc7eBPF\u5b9e\u65f6\u5206\u6790\u6d41\u91cf\u7279\u5f81\uff0c\u52a8\u6001\u751f\u6210\u8fc7\u6ee4\u89c4\u5219\u5e76\u4e0b\u53d1\u81f3\u786c\u4ef6\u5c42\u9762\uff0c\u5b9e\u73b0Tbps\u7ea7\u7684\u653b\u51fb\u6d41\u91cf\u6e05\u6d17\u3002\n<\/li>\n<li><strong>\u6280\u672f\u7a81\u7834<\/strong>\uff1a\u7ed3\u5408eBPF\u7684<strong>XDP\uff08eXpress Data Path\uff09<\/strong>\u6846\u67b6\uff0c\u6570\u636e\u5305\u5728\u8fdb\u5165\u7f51\u5361\u9a71\u52a8\u5c42\u65f6\u5373\u53ef\u88ab\u62e6\u622a\u5904\u7406\uff0c\u76f8\u6bd4\u4f20\u7edfiptables\u65b9\u6848\uff0c\u6027\u80fd\u63d0\u5347\u8d8510\u500d\u3002\n<\/li>\n<\/ul>\n<h4 id=\"3-\u7f51\u7edc\u53ef\u89c2\u6d4b\u6027\u4e0e\u6545\u969c\u8bca\u65ad\">3. <strong>\u7f51\u7edc\u53ef\u89c2\u6d4b\u6027\u4e0e\u6545\u969c\u8bca\u65ad<\/strong><\/h4>\n<p>\u667a\u80fd\u7f51\u5361\u901a\u5e38\u5177\u5907\u6d41\u91cf\u955c\u50cf\u4e0e\u7edf\u8ba1\u80fd\u529b\uff0c\u4f46\u7f3a\u4e4f\u7ec6\u7c92\u5ea6\u7684\u4e1a\u52a1\u4e0a\u4e0b\u6587\u611f\u77e5\u3002eBPF\u7a0b\u5e8f\u80fd\u591f<strong>\u5173\u8054\u5185\u6838\u4e8b\u4ef6\u4e0e\u7f51\u7edc\u62a5\u6587<\/strong>\uff0c\u5728\u786c\u4ef6\u5c42\u9762\u5b9e\u73b0\u591a\u7ef4\u6570\u636e\u91c7\u96c6\u3002<\/p>\n<ul>\n<li><strong>\u5b9e\u8df5\u6848\u4f8b<\/strong>\uff1a\u67d0\u4e91\u670d\u52a1\u5546\u5229\u7528eBPF\u5728\u667a\u80fd\u7f51\u5361\u4e2d\u5d4c\u5165\u8ffd\u8e2a\u70b9\uff0c\u5b9e\u65f6\u6355\u83b7\u5fae\u670d\u52a1\u95f4\u7684\u901a\u4fe1\u5ef6\u8fdf\u4e0e\u9519\u8bef\u7387\uff0c\u751f\u6210\u670d\u52a1\u4f9d\u8d56\u62d3\u6251\u56fe\u3002\u6b64\u7c7b\u6570\u636e\u76f4\u63a5\u901a\u8fc7\u7f51\u5361\u786c\u4ef6\u9884\u5904\u7406\uff0c\u4ec5\u5411\u4e3b\u673a\u4e0a\u4f20\u805a\u5408\u7ed3\u679c\uff0c<strong>\u51cf\u5c1190%\u7684\u8bca\u65ad\u6570\u636e\u5197\u4f59<\/strong>\u3002\n<\/li>\n<li><strong>\u4ef7\u503c<\/strong>\uff1a<em>\u5b9e\u73b0\u201c\u96f6\u4fb5\u6270\u201d\u76d1\u63a7<\/em>\uff0c\u907f\u514d\u4f20\u7edf\u6293\u5305\u5de5\u5177\u5bf9\u4e1a\u52a1\u6027\u80fd\u7684\u5f71\u54cd\u3002\n<\/li>\n<\/ul>\n<h4 id=\"4-\u52a8\u6001\u7f51\u7edc\u529f\u80fd\u7f16\u6392\">4. <strong>\u52a8\u6001\u7f51\u7edc\u529f\u80fd\u7f16\u6392<\/strong><\/h4>\n<p>\u5728\u6df7\u5408\u4e91\u4e0e\u8fb9\u7f18\u8ba1\u7b97\u573a\u666f\u4e2d\uff0c\u7f51\u7edc\u529f\u80fd\uff08\u5982\u8d1f\u8f7d\u5747\u8861\u3001NAT\uff09\u9700\u8981\u6839\u636e\u4e1a\u52a1\u8d1f\u8f7d\u52a8\u6001\u4f38\u7f29\u3002eBPF\u9a71\u52a8\u7684\u667a\u80fd\u7f51\u5361\u652f\u6301<strong>\u6309\u9700\u52a0\u8f7d\u529f\u80fd\u6a21\u5757<\/strong>\uff0c\u5f62\u6210\u201c\u7f51\u7edc\u529f\u80fd\u5373\u4ee3\u7801\u201d\u7684\u8303\u5f0f\u3002<\/p>\n<ul>\n<li><strong>\u6280\u672f\u5b9e\u73b0<\/strong>\uff1a\u901a\u8fc7Kubernetes\u7b49\u7f16\u6392\u7cfb\u7edf\u4e0b\u53d1eBPF\u7a0b\u5e8f\u81f3\u667a\u80fd\u7f51\u5361\uff0c\u53ef\u5728\u6beb\u79d2\u7ea7\u65f6\u95f4\u5185\u5b8c\u6210VPC\u8def\u7531\u66f4\u65b0\u6216QoS\u7b56\u7565\u8c03\u6574\u3002\n<\/li>\n<li><strong>\u884c\u4e1a\u8d8b\u52bf<\/strong>\uff1a\u5f00\u653e\u7f51\u7edc\u57fa\u91d1\u4f1a\uff08ONF\uff09\u7684Stratum\u9879\u76ee\u5df2\u5c1d\u8bd5\u5c06eBPF\u4f5c\u4e3a\u667a\u80fd\u7f51\u5361\u7684\u7edf\u4e00\u62bd\u8c61\u5c42\uff0c\u63a8\u52a8\u7f51\u7edc\u529f\u80fd\u7684\u5f00\u653e\u751f\u6001\u5efa\u8bbe\u3002\n<\/li>\n<\/ul>\n<hr>\n<h3 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