{"id":34414,"date":"2025-03-10T17:18:04","date_gmt":"2025-03-10T09:18:04","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=34414"},"modified":"2025-03-10T17:18:04","modified_gmt":"2025-03-10T09:18:04","slug":"%e4%bd%bf%e7%94%a8ebpf%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e9%ab%98%e6%95%88%e7%9a%84%e7%bd%91%e7%bb%9c%e5%8d%8f%e8%ae%ae%e4%bc%98%e5%8c%96%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/34414.html","title":{"rendered":"\u4f7f\u7528eBPF\u5982\u4f55\u5b9e\u73b0\u9ad8\u6548\u7684\u7f51\u7edc\u534f\u8bae\u4f18\u5316\uff1f"},"content":{"rendered":"<p style=\"text-align: center;\">\n<p><img decoding=\"async\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2025\/03\/wDXm9lpX.jpg\" alt=\"\u4f7f\u7528eBPF\u5982\u4f55\u5b9e\u73b0\u9ad8\u6548\u7684\u7f51\u7edc\u534f\u8bae\u4f18\u5316\uff1f\" ><\/p>\n<\/p>\n<p>\u5728\u6570\u5b57\u65f6\u4ee3\u7684\u6d6a\u6f6e\u4e0b\uff0c\u7f51\u7edc\u534f\u8bae\u6808\u7684\u6027\u80fd\u74f6\u9888\u6b63\u6210\u4e3a\u5236\u7ea6\u4e91\u8ba1\u7b97\u3001\u5fae\u670d\u52a1\u548c\u8fb9\u7f18\u8ba1\u7b97\u53d1\u5c55\u7684\u5173\u952e\u56e0\u7d20\u3002\u5f53\u4f20\u7edf\u4f18\u5316\u624b\u6bb5\u906d\u9047Linux\u5185\u6838\u5347\u7ea7\u7f13\u6162\u3001\u786c\u4ef6\u8d44\u6e90\u6d88\u8017\u8fc7\u9ad8\u7b49\u56f0\u5883\u65f6\uff0c<strong><a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\uff08Extended Berkeley Packet Filter\uff09<\/strong>\u72b9\u5982\u4e00\u67c4\u624b\u672f\u5200\uff0c\u4e3a\u7f51\u7edc\u6027\u80fd\u4f18\u5316\u5f00\u8f9f\u4e86\u5168\u65b0\u7684\u53ef\u80fd\u6027\u3002\u8fd9\u9879\u8bde\u751f\u4e8e2014\u5e74\u7684\u6280\u672f\uff0c\u901a\u8fc7\u5728\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u6784\u5efa\u5b89\u5168\u3001\u9ad8\u6548\u7684\u865a\u62df\u673a\uff0c\u6b63\u5728\u91cd\u65b0\u5b9a\u4e49\u7f51\u7edc\u6570\u636e\u5904\u7406\u7684\u8fb9\u754c\u3002<\/p>\n<hr>\n<h3 id=\"\u4e00-ebpf\u98a0\u8986\u4f20\u7edf\u4f18\u5316\u7684\u6280\u672f\u5185\u6838\">\u4e00\u3001<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\u98a0\u8986\u4f20\u7edf\u4f18\u5316\u7684\u6280\u672f\u5185\u6838<\/h3>\n<p>\u4f20\u7edf\u7f51\u7edc\u4f18\u5316\u5f80\u5f80\u9762\u4e34\u4e24\u96be\u6289\u62e9\uff1a\u8981\u4e48\u4fee\u6539\u5185\u6838\u4ee3\u7801\u83b7\u5f97\u9ad8\u6027\u80fd\u4f46\u727a\u7272\u7cfb\u7edf\u7a33\u5b9a\u6027\uff0c\u8981\u4e48\u4f9d\u8d56\u7528\u6237\u6001\u65b9\u6848\u627f\u53d7\u989d\u5916\u7684\u4e0a\u4e0b\u6587\u5207\u6362\u5f00\u9500\u3002<strong>eBPF\u7684\u9769\u65b0\u6027\u5728\u4e8e\u521b\u5efa\u4e86\u52a8\u6001\u6ce8\u5165\u5185\u6838\u7684\u5b89\u5168\u6267\u884c\u73af\u5883<\/strong>\u2014\u2014\u5176\u9a8c\u8bc1\u5668\u4f1a\u4e25\u683c\u68c0\u67e5\u5b57\u8282\u7801\u7684\u5b89\u5168\u6027\uff0cJIT\u7f16\u8bd1\u5668\u5219\u5c06\u5b57\u8282\u7801\u8f6c\u6362\u4e3a\u539f\u751f\u6307\u4ee4\uff0c\u8fd9\u4f7f\u5f97\u8fd0\u884c\u65f6\u6027\u80fd\u635f\u8017\u53ef\u63a7\u5236\u57285%\u4ee5\u5185\u3002<\/p>\n<p>\u5177\u4f53\u5230\u7f51\u7edc\u534f\u8bae\u4f18\u5316\uff0ceBPF\u7a0b\u5e8f\u901a\u8fc7\u6302\u8f7d\u5230<strong>XDP\uff08eXpress Data Path\uff09<\/strong>\u548c<strong>TC\uff08Traffic Control\uff09<\/strong>\u7b49\u5173\u952e\u94a9\u5b50\u70b9\uff0c\u80fd\u591f\u5728\u6570\u636e\u5305\u8fdb\u5165\u534f\u8bae\u6808\u7684\u6700\u65e9\u9636\u6bb5\u8fdb\u884c\u5904\u7406\u3002\u4ee5\u4e91\u539f\u751f\u573a\u666f\u4e3a\u4f8b\uff0cCilium\u9879\u76ee\u5229\u7528XDP\u5b9e\u73b0\u5bb9\u5668\u7f51\u7edc\u7684\u76f4\u63a5\u8f6c\u53d1\uff0c\u5c06\u5ef6\u8fdf\u4ece\u4f20\u7edf\u65b9\u6848\u7684100\u5fae\u79d2\u91cf\u7ea7\u964d\u81f330\u5fae\u79d2\u4ee5\u4e0b\u3002<\/p>\n<hr>\n<h3 id=\"\u4e8c-\u56db\u5927\u6838\u5fc3\u4f18\u5316\u573a\u666f\u7684\u6280\u672f\u5b9e\u8df5\">\u4e8c\u3001\u56db\u5927\u6838\u5fc3\u4f18\u5316\u573a\u666f\u7684\u6280\u672f\u5b9e\u8df5<\/h3>\n<h4 id=\"1-\u534f\u8bae\u6808\u65c1\u8def\u52a0\u901f\">1. <strong>\u534f\u8bae\u6808\u65c1\u8def\u52a0\u901f<\/strong><\/h4>\n<p>\u5728\u91d1\u878d\u4ea4\u6613\u7cfb\u7edf\u7b49\u65f6\u5ef6\u654f\u611f\u573a\u666f\uff0ceBPF\u652f\u6301\u6784\u5efa\u7528\u6237\u6001\u534f\u8bae\u6808\u3002\u901a\u8fc7\u7ed5\u8fc7\u5185\u6838TCP\/IP\u534f\u8bae\u6808\uff0cMongoDB\u56e2\u961f\u6210\u529f\u5c06\u67e5\u8be2\u5ef6\u8fdf\u964d\u4f4e40%\u3002\u8fd9\u79cd&rdquo;\u5185\u6838\u65c1\u8def&rdquo;\u5e76\u975e\u5b8c\u5168\u629b\u5f03\u5185\u6838\u7f51\u7edc\u6808\uff0c\u800c\u662f\u901a\u8fc7<strong>BPF_PROG_TYPE_SOCK_OPS<\/strong>\u7b49\u7a0b\u5e8f\u7c7b\u578b\u667a\u80fd\u9009\u62e9\u6700\u4f18\u8def\u5f84\u3002<\/p>\n<h4 id=\"2-\u667a\u80fd\u8d1f\u8f7d\u5747\u8861\u9769\u65b0\">2. <strong>\u667a\u80fd\u8d1f\u8f7d\u5747\u8861\u9769\u65b0<\/strong><\/h4>\n<p>\u4f20\u7edfiptables\u5728\u4e07\u7ea7\u89c4\u5219\u65f6\u6027\u80fd\u6025\u5267\u4e0b\u964d\uff0c\u800ceBPF\u5b9e\u73b0\u7684Maglev\u8d1f\u8f7d\u5747\u8861\u5668\u53ef\u7ef4\u6301\u6570\u767e\u4e07QPS\u3002\u5176\u79d8\u8bc0\u5728\u4e8e\u5c06\u89c4\u5219\u5b58\u50a8\u5728\u53ef\u54c8\u5e0c\u67e5\u627e\u7684BPF_MAP\u4e2d\uff0c\u5e76\u901a\u8fc7<strong>bpf_redirect<\/strong>\u7b49helper\u51fd\u6570\u5b9e\u73b0\u96f6\u62f7\u8d1d\u8f6c\u53d1\u3002\u67d0\u5934\u90e8\u4e91\u5382\u5546\u7684\u5b9e\u8df5\u663e\u793a\uff0c\u5728\u540c\u7b49\u786c\u4ef6\u6761\u4ef6\u4e0b\uff0ceBPF\u65b9\u6848\u6bd4IPVS\u541e\u5410\u91cf\u63d0\u53473\u500d\u3002<\/p>\n<h4 id=\"3-\u7cbe\u51c6\u6d41\u91cf\u63a7\u5236\">3. <strong>\u7cbe\u51c6\u6d41\u91cf\u63a7\u5236<\/strong><\/h4>\n<p>\u57fa\u4e8eeBPF\u7684\u6d41\u91cf\u6574\u5f62\u5668\u53ef\u7cbe\u786e\u5230\u6bcf\u4e2asocket\u7ea7\u522b\u7684QoS\u63a7\u5236\u3002\u501f\u52a9<strong>BPF_F_QUERY_EFFECTIVE<\/strong>\u6807\u5fd7\u4f4d\uff0c\u5de5\u7a0b\u5e08\u80fd\u52a8\u6001\u8c03\u6574\u5e26\u5bbd\u5206\u914d\u7b56\u7565\u3002\u67d0\u89c6\u9891\u5e73\u53f0\u91c7\u7528\u8be5\u6280\u672f\u540e\uff0c\u9ad8\u5cf0\u671f\u5361\u987f\u7387\u4e0b\u964d70%\uff0c\u540c\u65f6\u8282\u7701\u4e8615%\u7684\u5e26\u5bbd\u6210\u672c\u3002<\/p>\n<h4 id=\"4-\u534f\u8bae\u589e\u5f3a\u4e0e\u521b\u65b0\">4. <strong>\u534f\u8bae\u589e\u5f3a\u4e0e\u521b\u65b0<\/strong><\/h4>\n<p>QUIC\u534f\u8bae\u7684\u5b9e\u9a8c\u6027\u90e8\u7f72\u4e2d\uff0ceBPF\u88ab\u7528\u4e8e\u5b9e\u73b00-RTT\u8fde\u63a5\u7684\u5feb\u901f\u6062\u590d\u3002\u901a\u8fc7\u6ce8\u5165BPF\u7a0b\u5e8f\u5230TLS\u63e1\u624b\u8fc7\u7a0b\uff0c\u53ef\u5728\u4e0d\u4fee\u6539\u5e94\u7528\u7a0b\u5e8f\u7684\u60c5\u51b5\u4e0b\u81ea\u52a8\u6062\u590d\u4f1a\u8bdd\u72b6\u6001\u3002\u8fd9\u79cd&rdquo;\u534f\u8bae\u6f14\u8fdb&rdquo;\u6a21\u5f0f\u6bd4\u4f20\u7edf\u5185\u6838\u5347\u7ea7\u8def\u5f84\u5feb6-12\u4e2a\u6708\u3002<\/p>\n<hr>\n<h3 id=\"\u4e09-\u6027\u80fd\u7a81\u7834\u80cc\u540e\u7684\u8bbe\u8ba1\u54f2\u5b66\">\u4e09\u3001\u6027\u80fd\u7a81\u7834\u80cc\u540e\u7684\u8bbe\u8ba1\u54f2\u5b66<\/h3>\n<p>eBPF\u7684\u4f18\u5316\u6548\u80fd\u6e90\u4e8e\u4e09\u4e2a\u5173\u952e\u8bbe\u8ba1\u539f\u5219\uff1a<\/p>\n<ul>\n<li><strong>\u5782\u76f4\u6574\u5408<\/strong>\uff1a\u5c06\u63a7\u5236\u5e73\u9762\uff08\u7528\u6237\u6001\uff09\u4e0e\u6570\u636e\u5e73\u9762\uff08\u5185\u6838\u6001\uff09\u89e3\u8026\uff0c\u901a\u8fc7BPF\u6620\u5c04\u5b9e\u73b0\u9ad8\u6548\u901a\u4fe1\n<\/li>\n<li><strong>\u5373\u65f6\u53cd\u9988<\/strong>\uff1a\u5229\u7528perf\u4e8b\u4ef6\u73af\u5f62\u7f13\u51b2\u533a\u5b9e\u65f6\u6536\u96c6\u7f51\u7edc\u6307\u6807\uff0c\u52a8\u6001\u8c03\u6574\u5904\u7406\u7b56\u7565\n<\/li>\n<li><strong>\u5b89\u5168\u4f18\u5148<\/strong>\uff1a\u9a8c\u8bc1\u5668\u5305\u542b50\u4f59\u79cd\u5b89\u5168\u68c0\u67e5\u7c7b\u578b\uff0c\u786e\u4fdd\u4efb\u4f55\u5185\u5b58\u8d8a\u754c\u8bbf\u95ee\u90fd\u4f1a\u88ab\u62e6\u622a\n<\/li>\n<\/ul>\n<p>\u8fd9\u79cd\u67b6\u6784\u4f7f\u5f97\u4f18\u5316\u65b9\u6848\u517c\u5177\u7075\u6d3b\u6027\u4e0e\u5b89\u5168\u6027\u3002\u4f8b\u5982\u5728DDoS\u9632\u62a4\u573a\u666f\uff0ceBPF\u7a0b\u5e8f\u80fd\u5728\u4e00\u79d2\u5185\u66f4\u65b0\u68c0\u6d4b\u89c4\u5219\uff0c\u540c\u65f6\u4fdd\u8bc1\u8fc7\u6ee4\u903b\u8f91\u4e0d\u4f1a\u5f15\u53d1\u5185\u6838\u5d29\u6e83\u3002<\/p>\n<hr>\n<h3 id=\"\u56db-\u843d\u5730\u5b9e\u8df5\u4e2d\u7684\u5173\u952e\u51b3\u7b56\u70b9\">\u56db\u3001\u843d\u5730\u5b9e\u8df5\u4e2d\u7684\u5173\u952e\u51b3\u7b56\u70b9<\/h3>\n<p>\u8981\u5b9e\u73b0eBPF\u7f51\u7edc\u4f18\u5316\u7684\u4ef7\u503c\u6700\u5927\u5316\uff0c\u9700\u91cd\u70b9\u8003\u91cf\u4e09\u4e2a\u7ef4\u5ea6\uff1a<\/p>\n<ol>\n<li><strong>\u94a9\u5b50\u70b9\u9009\u62e9\u7b56\u7565<\/strong>\n<\/li>\n<\/ol>\n<ul>\n<li>XDP\u9002\u5408\u65e9\u671f\u8fc7\u6ee4\u548c\u5feb\u901f\u4e22\u5f03\n<\/li>\n<li>TC\u66f4\u9002\u5408\u590d\u6742\u6d41\u91cf\u6574\u5f62\n<\/li>\n<li>Socket\u5c42\u6302\u94a9\u9002\u7528\u4e8e\u5e94\u7528\u5c42\u534f\u8bae\u4f18\u5316\n<\/li>\n<\/ul>\n<ol>\n<li><strong>\u6570\u636e\u7ed3\u6784\u4f18\u5316<\/strong>\n<\/li>\n<\/ol>\n<ul>\n<li>\u9488\u5bf9LPM\uff08\u6700\u957f\u524d\u7f00\u5339\u914d\uff09\u4f7f\u7528BPF_MAP_TYPE_LPM_TRIE\n<\/li>\n<li>\u9ad8\u5e76\u53d1\u8ba1\u6570\u91c7\u7528BPF_MAP_TYPE_PERCPU_HASH\n<\/li>\n<li>\u6d41\u72b6\u6001\u8ddf\u8e2a\u9009\u7528BPF_MAP_TYPE_LRU_HASH\n<\/li>\n<\/ul>\n<ol>\n<li><strong>\u89c2\u6d4b\u6027\u589e\u5f3a<\/strong>\n<\/li>\n<\/ol>\n<ul>\n<li>\u901a\u8fc7BPF_TRACE\u5b8f\u6ce8\u5165\u57cb\u70b9\n<\/li>\n<li>\u5229\u7528skb_output()\u6355\u83b7\u7279\u5b9a\u6570\u636e\u5305\n<\/li>\n<li>\u7ed3\u5408<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">Prometheus<\/a>\u5b9e\u73b0\u6307\u6807\u53ef\u89c6\u5316\n<\/li>\n<\/ul>\n<p>\u67d0\u7535\u5546\u5e73\u53f0\u5728\u7f51\u5173\u5c42\u90e8\u7f72eBPF\u540e\uff0c\u901a\u8fc7\u52a8\u6001\u52a0\u8f7d\u4e0d\u540c\u5904\u7406\u7a0b\u5e8f\uff0c\u5728\u4fc3\u9500\u671f\u95f4\u81ea\u52a8\u5207\u6362\u6d41\u91cf\u5904\u7406\u6a21\u5f0f\uff0c\u4f7f\u670d\u52a1\u5668\u8d44\u6e90\u5229\u7528\u7387\u59cb\u7ec8\u4fdd\u6301\u572885%\u7684\u5b89\u5168\u9608\u503c\u5185\u3002<\/p>\n<hr>\n<h3 id=\"\u4e94-\u8de8\u8d8a\u6027\u80fd\u4e0e\u5b89\u5168\u7684\u53cc\u91cd\u8fb9\u754c\">\u4e94\u3001\u8de8\u8d8a\u6027\u80fd\u4e0e\u5b89\u5168\u7684\u53cc\u91cd\u8fb9\u754c<\/h3>\n<p>\u867d\u7136eBPF\u663e\u8457\u63d0\u5347\u4e86\u7f51\u7edc\u5904\u7406\u6548\u7387\uff0c\u4f46\u6df1\u5ea6\u4f18\u5316\u9700\u8981\u5e73\u8861\u591a\u91cd\u56e0\u7d20\u3002\u5728\u5b9e\u65bdXDP\u52a0\u901f\u65f6\uff0c\u5de5\u7a0b\u5e08\u5fc5\u987b\u8bc4\u4f30\u7f51\u5361\u9a71\u52a8\u517c\u5bb9\u6027\u2014\u2014Intel XL710\u7cfb\u5217\u7f51\u5361\u7684XDP\u652f\u6301\u5ea6\u5c31\u660e\u663e\u4f18\u4e8e\u67d0\u4e9b\u767d\u724c\u786c\u4ef6\u3002\u540c\u65f6\uff0c\u590d\u6742\u7684eBPF\u7a0b\u5e8f\u53ef\u80fd\u89e6\u53d1\u9a8c\u8bc1\u5668\u9650\u5236\uff0c\u6b64\u65f6\u53ef\u91c7\u7528\u51fd\u6570\u5c3e\u8c03\u7528\uff08tail call\uff09\u62c6\u5206\u903b\u8f91\u3002<\/p>\n<p>\u503c\u5f97\u5173\u6ce8\u7684\u662f\uff0c2023\u5e74Linux 6.4\u5185\u6838\u5f15\u5165\u7684<strong>BPF Token<\/strong>\u673a\u5236\uff0c\u4e3a\u8de8\u547d\u540d\u7a7a\u95f4\u7684eBPF\u7a0b\u5e8f\u7ba1\u7406\u63d0\u4f9b\u4e86\u66f4\u7cbe\u7ec6\u7684\u6743\u9650\u63a7\u5236\u3002\u8fd9\u6807\u5fd7\u7740eBPF\u6b63\u4ece\u6027\u80fd\u4f18\u5316\u5de5\u5177\u5411\u5e73\u53f0\u7ea7\u89e3\u51b3\u65b9\u6848\u6f14\u8fdb\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u6570\u5b57\u65f6\u4ee3\u7684\u6d6a\u6f6e\u4e0b\uff0c\u7f51\u7edc\u534f\u8bae\u6808\u7684\u6027\u80fd\u74f6\u9888\u6b63\u6210\u4e3a\u5236\u7ea6\u4e91\u8ba1\u7b97\u3001\u5fae\u670d\u52a1\u548c\u8fb9\u7f18\u8ba1\u7b97\u53d1\u5c55\u7684\u5173\u952e\u56e0\u7d20\u3002\u5f53\u4f20\u7edf\u4f18\u5316\u624b\u6bb5\u906d\u9047Linux\u5185\u6838\u5347\u7ea7\u7f13\u6162\u3001\u786c\u4ef6\u8d44\u6e90\u6d88\u8017\u8fc7\u9ad8\u7b49\u56f0\u5883\u65f6\uff0ceBPF\uff08Extended Berkeley Packet Filter\uff09\u72b9\u5982\u4e00\u67c4\u624b\u672f\u5200\uff0c\u4e3a\u7f51\u7edc\u6027\u80fd\u4f18\u5316\u5f00\u8f9f\u4e86\u5168\u65b0\u7684\u53ef\u80fd\u6027\u3002\u8fd9\u9879\u8bde\u751f\u4e8e2014\u5e74\u7684\u6280\u672f\uff0c\u901a\u8fc7\u5728\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u6784\u5efa\u5b89\u5168\u3001\u9ad8\u6548\u7684\u865a\u62df\u673a\uff0c\u6b63\u5728\u91cd\u65b0\u5b9a\u4e49\u7f51\u7edc\u6570\u636e\u5904\u7406\u7684\u8fb9\u754c\u3002 \u4e00\u3001eBPF\u98a0\u8986\u4f20\u7edf\u4f18\u5316\u7684\u6280\u672f\u5185\u6838 \u4f20\u7edf\u7f51\u7edc\u4f18\u5316\u5f80\u5f80\u9762\u4e34\u4e24\u96be\u6289\u62e9\uff1a\u8981\u4e48\u4fee\u6539\u5185\u6838\u4ee3\u7801\u83b7\u5f97\u9ad8\u6027\u80fd\u4f46\u727a\u7272\u7cfb\u7edf\u7a33\u5b9a\u6027\uff0c\u8981\u4e48\u4f9d\u8d56\u7528\u6237\u6001\u65b9\u6848\u627f\u53d7\u989d\u5916\u7684\u4e0a\u4e0b\u6587\u5207\u6362\u5f00\u9500\u3002eBPF\u7684\u9769\u65b0\u6027\u5728\u4e8e\u521b\u5efa\u4e86\u52a8\u6001\u6ce8\u5165\u5185\u6838\u7684\u5b89\u5168\u6267\u884c\u73af\u5883\u2014\u2014\u5176\u9a8c\u8bc1\u5668\u4f1a\u4e25\u683c\u68c0\u67e5\u5b57\u8282\u7801\u7684\u5b89\u5168\u6027\uff0cJIT\u7f16\u8bd1\u5668\u5219\u5c06\u5b57\u8282\u7801\u8f6c\u6362\u4e3a\u539f\u751f\u6307\u4ee4\uff0c\u8fd9\u4f7f\u5f97\u8fd0\u884c\u65f6\u6027\u80fd\u635f\u8017\u53ef\u63a7\u5236\u57285%\u4ee5\u5185\u3002 \u5177\u4f53\u5230\u7f51\u7edc\u534f\u8bae\u4f18\u5316\uff0ceBPF\u7a0b\u5e8f\u901a\u8fc7\u6302\u8f7d\u5230XDP\uff08eXpress Data Path\uff09\u548cTC\uff08Traffic Control\uff09\u7b49\u5173\u952e\u94a9\u5b50\u70b9\uff0c\u80fd\u591f\u5728\u6570\u636e\u5305\u8fdb\u5165\u534f\u8bae\u6808\u7684\u6700\u65e9\u9636\u6bb5\u8fdb\u884c\u5904\u7406\u3002\u4ee5\u4e91\u539f\u751f\u573a\u666f\u4e3a\u4f8b\uff0cCilium\u9879\u76ee\u5229\u7528XDP\u5b9e\u73b0\u5bb9\u5668\u7f51\u7edc\u7684\u76f4\u63a5\u8f6c\u53d1\uff0c\u5c06\u5ef6\u8fdf\u4ece\u4f20\u7edf\u65b9\u6848\u7684100\u5fae\u79d2\u91cf\u7ea7\u964d\u81f330\u5fae\u79d2\u4ee5\u4e0b\u3002 \u4e8c\u3001\u56db\u5927\u6838\u5fc3\u4f18\u5316\u573a\u666f\u7684\u6280\u672f\u5b9e\u8df5 1. \u534f\u8bae\u6808\u65c1\u8def\u52a0\u901f \u5728\u91d1\u878d\u4ea4\u6613\u7cfb\u7edf\u7b49\u65f6\u5ef6\u654f\u611f\u573a\u666f\uff0ceBPF\u652f\u6301\u6784\u5efa\u7528\u6237\u6001\u534f\u8bae\u6808\u3002\u901a\u8fc7\u7ed5\u8fc7\u5185\u6838TCP\/IP\u534f\u8bae\u6808\uff0cMongoDB\u56e2\u961f\u6210\u529f\u5c06\u67e5\u8be2\u5ef6\u8fdf\u964d\u4f4e40%\u3002\u8fd9\u79cd&rdquo;\u5185\u6838\u65c1\u8def&rdquo;\u5e76\u975e\u5b8c\u5168\u629b\u5f03\u5185\u6838\u7f51\u7edc\u6808\uff0c\u800c\u662f\u901a\u8fc7BPF_PROG_TYPE_SOCK_OPS\u7b49\u7a0b\u5e8f\u7c7b\u578b\u667a\u80fd\u9009\u62e9\u6700\u4f18\u8def\u5f84\u3002 2. \u667a\u80fd\u8d1f\u8f7d\u5747\u8861\u9769\u65b0 \u4f20\u7edfiptables\u5728\u4e07\u7ea7\u89c4\u5219\u65f6\u6027\u80fd\u6025\u5267\u4e0b\u964d\uff0c\u800ceBPF\u5b9e\u73b0\u7684Maglev\u8d1f\u8f7d\u5747\u8861\u5668\u53ef\u7ef4\u6301\u6570\u767e\u4e07QPS\u3002\u5176\u79d8\u8bc0\u5728\u4e8e\u5c06\u89c4\u5219\u5b58\u50a8\u5728\u53ef\u54c8\u5e0c\u67e5\u627e\u7684BPF_MAP\u4e2d\uff0c\u5e76\u901a\u8fc7bpf_redirect\u7b49helper\u51fd\u6570\u5b9e\u73b0\u96f6\u62f7\u8d1d\u8f6c\u53d1\u3002\u67d0\u5934\u90e8\u4e91\u5382\u5546\u7684\u5b9e\u8df5\u663e\u793a\uff0c\u5728\u540c\u7b49\u786c\u4ef6\u6761\u4ef6\u4e0b\uff0ceBPF\u65b9\u6848\u6bd4IPVS\u541e\u5410\u91cf\u63d0\u53473\u500d\u3002 3. \u7cbe\u51c6\u6d41\u91cf\u63a7\u5236 \u57fa\u4e8eeBPF\u7684\u6d41\u91cf\u6574\u5f62\u5668\u53ef\u7cbe\u786e\u5230\u6bcf\u4e2asocket\u7ea7\u522b\u7684QoS\u63a7\u5236\u3002\u501f\u52a9BPF_F_QUERY_EFFECTIVE\u6807\u5fd7\u4f4d\uff0c\u5de5\u7a0b\u5e08\u80fd\u52a8\u6001\u8c03\u6574\u5e26\u5bbd\u5206\u914d\u7b56\u7565\u3002\u67d0\u89c6\u9891\u5e73\u53f0\u91c7\u7528\u8be5\u6280\u672f\u540e\uff0c\u9ad8\u5cf0\u671f\u5361\u987f\u7387\u4e0b\u964d70%\uff0c\u540c\u65f6\u8282\u7701\u4e8615%\u7684\u5e26\u5bbd\u6210\u672c\u3002 4. \u534f\u8bae\u589e\u5f3a\u4e0e\u521b\u65b0 QUIC\u534f\u8bae\u7684\u5b9e\u9a8c\u6027\u90e8\u7f72\u4e2d\uff0ceBPF\u88ab\u7528\u4e8e\u5b9e\u73b00-RTT\u8fde\u63a5\u7684\u5feb\u901f\u6062\u590d\u3002\u901a\u8fc7\u6ce8\u5165BPF\u7a0b\u5e8f\u5230TLS\u63e1\u624b\u8fc7\u7a0b\uff0c\u53ef\u5728\u4e0d\u4fee\u6539\u5e94\u7528\u7a0b\u5e8f\u7684\u60c5\u51b5\u4e0b\u81ea\u52a8\u6062\u590d\u4f1a\u8bdd\u72b6\u6001\u3002\u8fd9\u79cd&rdquo;\u534f\u8bae\u6f14\u8fdb&rdquo;\u6a21\u5f0f\u6bd4\u4f20\u7edf\u5185\u6838\u5347\u7ea7\u8def\u5f84\u5feb6-12\u4e2a\u6708\u3002 \u4e09\u3001\u6027\u80fd\u7a81\u7834\u80cc\u540e\u7684\u8bbe\u8ba1\u54f2\u5b66 eBPF\u7684\u4f18\u5316\u6548\u80fd\u6e90\u4e8e\u4e09\u4e2a\u5173\u952e\u8bbe\u8ba1\u539f\u5219\uff1a \u5782\u76f4\u6574\u5408\uff1a\u5c06\u63a7\u5236\u5e73\u9762\uff08\u7528\u6237\u6001\uff09\u4e0e\u6570\u636e\u5e73\u9762\uff08\u5185\u6838\u6001\uff09\u89e3\u8026\uff0c\u901a\u8fc7BPF\u6620\u5c04\u5b9e\u73b0\u9ad8\u6548\u901a\u4fe1 \u5373\u65f6\u53cd\u9988\uff1a\u5229\u7528perf\u4e8b\u4ef6\u73af\u5f62\u7f13\u51b2\u533a\u5b9e\u65f6\u6536\u96c6\u7f51\u7edc\u6307\u6807\uff0c\u52a8\u6001\u8c03\u6574\u5904\u7406\u7b56\u7565 \u5b89\u5168\u4f18\u5148\uff1a\u9a8c\u8bc1\u5668\u5305\u542b50\u4f59\u79cd\u5b89\u5168\u68c0\u67e5\u7c7b\u578b\uff0c\u786e\u4fdd\u4efb\u4f55\u5185\u5b58\u8d8a\u754c\u8bbf\u95ee\u90fd\u4f1a\u88ab\u62e6\u622a \u8fd9\u79cd\u67b6\u6784\u4f7f\u5f97\u4f18\u5316\u65b9\u6848\u517c\u5177\u7075\u6d3b\u6027\u4e0e\u5b89\u5168\u6027\u3002\u4f8b\u5982\u5728DDoS\u9632\u62a4\u573a\u666f\uff0ceBPF\u7a0b\u5e8f\u80fd\u5728\u4e00\u79d2\u5185\u66f4\u65b0\u68c0\u6d4b\u89c4\u5219\uff0c\u540c\u65f6\u4fdd\u8bc1\u8fc7\u6ee4\u903b\u8f91\u4e0d\u4f1a\u5f15\u53d1\u5185\u6838\u5d29\u6e83\u3002 \u56db\u3001\u843d\u5730\u5b9e\u8df5\u4e2d\u7684\u5173\u952e\u51b3\u7b56\u70b9 \u8981\u5b9e\u73b0eBPF\u7f51\u7edc\u4f18\u5316\u7684\u4ef7\u503c\u6700\u5927\u5316\uff0c\u9700\u91cd\u70b9\u8003\u91cf\u4e09\u4e2a\u7ef4\u5ea6\uff1a \u94a9\u5b50\u70b9\u9009\u62e9\u7b56\u7565 XDP\u9002\u5408\u65e9\u671f\u8fc7\u6ee4\u548c\u5feb\u901f\u4e22\u5f03 TC\u66f4\u9002\u5408\u590d\u6742\u6d41\u91cf\u6574\u5f62 Socket\u5c42\u6302\u94a9\u9002\u7528\u4e8e\u5e94\u7528\u5c42\u534f\u8bae\u4f18\u5316 \u6570\u636e\u7ed3\u6784\u4f18\u5316 \u9488\u5bf9LPM\uff08\u6700\u957f\u524d\u7f00\u5339\u914d\uff09\u4f7f\u7528BPF_MAP_TYPE_LPM_TRIE \u9ad8\u5e76\u53d1\u8ba1\u6570\u91c7\u7528BPF_MAP_TYPE_PERCPU_HASH \u6d41\u72b6\u6001\u8ddf\u8e2a\u9009\u7528BPF_MAP_TYPE_LRU_HASH \u89c2\u6d4b\u6027\u589e\u5f3a \u901a\u8fc7BPF_TRACE\u5b8f\u6ce8\u5165\u57cb\u70b9 \u5229\u7528skb_output()\u6355\u83b7\u7279\u5b9a\u6570\u636e\u5305 \u7ed3\u5408Prometheus\u5b9e\u73b0\u6307\u6807\u53ef\u89c6\u5316 \u67d0\u7535\u5546\u5e73\u53f0\u5728\u7f51\u5173\u5c42\u90e8\u7f72eBPF\u540e\uff0c\u901a\u8fc7\u52a8\u6001\u52a0\u8f7d\u4e0d\u540c\u5904\u7406\u7a0b\u5e8f\uff0c\u5728\u4fc3\u9500\u671f\u95f4\u81ea\u52a8\u5207\u6362\u6d41\u91cf\u5904\u7406\u6a21\u5f0f\uff0c\u4f7f\u670d\u52a1\u5668\u8d44\u6e90\u5229\u7528\u7387\u59cb\u7ec8\u4fdd\u6301\u572885%\u7684\u5b89\u5168\u9608\u503c\u5185\u3002 \u4e94\u3001\u8de8\u8d8a\u6027\u80fd\u4e0e\u5b89\u5168\u7684\u53cc\u91cd\u8fb9\u754c \u867d\u7136eBPF\u663e\u8457\u63d0\u5347\u4e86\u7f51\u7edc\u5904\u7406\u6548\u7387\uff0c\u4f46\u6df1\u5ea6\u4f18\u5316\u9700\u8981\u5e73\u8861\u591a\u91cd\u56e0\u7d20\u3002\u5728\u5b9e\u65bdXDP\u52a0\u901f\u65f6\uff0c\u5de5\u7a0b\u5e08\u5fc5\u987b\u8bc4\u4f30\u7f51\u5361\u9a71\u52a8\u517c\u5bb9\u6027\u2014\u2014Intel XL710\u7cfb\u5217\u7f51\u5361\u7684XDP\u652f\u6301\u5ea6\u5c31\u660e\u663e\u4f18\u4e8e\u67d0\u4e9b\u767d\u724c\u786c\u4ef6\u3002\u540c\u65f6\uff0c\u590d\u6742\u7684eBPF\u7a0b\u5e8f\u53ef\u80fd\u89e6\u53d1\u9a8c\u8bc1\u5668\u9650\u5236\uff0c\u6b64\u65f6\u53ef\u91c7\u7528\u51fd\u6570\u5c3e\u8c03\u7528\uff08tail call\uff09\u62c6\u5206\u903b\u8f91\u3002 \u503c\u5f97\u5173\u6ce8\u7684\u662f\uff0c2023\u5e74Linux 6.4\u5185\u6838\u5f15\u5165\u7684BPF Token\u673a\u5236\uff0c\u4e3a\u8de8\u547d\u540d\u7a7a\u95f4\u7684eBPF\u7a0b\u5e8f\u7ba1\u7406\u63d0\u4f9b\u4e86\u66f4\u7cbe\u7ec6\u7684\u6743\u9650\u63a7\u5236\u3002\u8fd9\u6807\u5fd7\u7740eBPF\u6b63\u4ece\u6027\u80fd\u4f18\u5316\u5de5\u5177\u5411\u5e73\u53f0\u7ea7\u89e3\u51b3\u65b9\u6848\u6f14\u8fdb\u3002<\/p>\n","protected":false},"author":4,"featured_media":34415,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-34414","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-news"],"_links":{"self":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/34414","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/comments?post=34414"}],"version-history":[{"count":1,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/34414\/revisions"}],"predecessor-version":[{"id":34416,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/34414\/revisions\/34416"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media\/34415"}],"wp:attachment":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media?parent=34414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/categories?post=34414"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/tags?post=34414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}