{"id":37320,"date":"2025-04-18T11:12:58","date_gmt":"2025-04-18T03:12:58","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=37320"},"modified":"2025-04-18T11:12:58","modified_gmt":"2025-04-18T03:12:58","slug":"ebpf%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e5%8a%a8%e6%80%81%e7%ad%96%e7%95%a5%e6%89%a7%e8%a1%8c%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/37320.html","title":{"rendered":"eBPF\u5982\u4f55\u5b9e\u73b0\u52a8\u6001\u7b56\u7565\u6267\u884c\uff1f"},"content":{"rendered":"<p style=\"text-align: center;\">\n<p><img decoding=\"async\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2025\/04\/ZpDtWz4.jpg\" alt=\"eBPF\u5982\u4f55\u5b9e\u73b0\u52a8\u6001\u7b56\u7565\u6267\u884c\uff1f\" ><\/p>\n<\/p>\n<hr>\n<p>\u5728\u6570\u5b57\u5316\u8f6c\u578b\u7684\u6d6a\u6f6e\u4e2d\uff0c\u4f01\u4e1a\u57fa\u7840\u8bbe\u65bd\u7684\u590d\u6742\u6027\u4e0e\u65e5\u4ff1\u589e\u3002\u9762\u5bf9\u77ac\u606f\u4e07\u53d8\u7684\u4e1a\u52a1\u9700\u6c42\uff0c\u4f20\u7edf\u57fa\u4e8e\u9759\u6001\u89c4\u5219\u7684\u8fd0\u7ef4\u7b56\u7565\u663e\u5f97\u6349\u895f\u89c1\u8098\u2014\u2014\u6bcf\u6b21\u7b56\u7565\u8c03\u6574\u90fd\u9700\u8981\u7cfb\u7edf\u505c\u673a\u3001\u670d\u52a1\u91cd\u542f\uff0c\u8fd9\u4e0d\u4ec5\u5f71\u54cd\u4e1a\u52a1\u8fde\u7eed\u6027\uff0c\u66f4\u5728\u4e91\u539f\u751f\u573a\u666f\u4e0b\u66b4\u9732\u4e86\u81f4\u547d\u77ed\u677f\u3002<strong>\u5982\u4f55\u5728\u4e0d\u4e2d\u65ad\u670d\u52a1\u7684\u524d\u63d0\u4e0b\u5b9e\u73b0\u7b56\u7565\u7684\u52a8\u6001\u8c03\u6574\uff1f<\/strong>\u8fd9\u4e00\u547d\u9898\u6b63\u5728\u5c06<strong><a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\uff08Extended Berkeley Packet Filter\uff09<\/strong>\u6280\u672f\u63a8\u5411\u821e\u53f0\u4e2d\u592e\u3002<\/p>\n<hr>\n<h3 id=\"\u4e00-ebpf-\u5185\u6838\u7ea7\u7684\u52a8\u6001\u6267\u884c\u5f15\u64ce\">\u4e00\u3001<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\uff1a\u5185\u6838\u7ea7\u7684\u52a8\u6001\u6267\u884c\u5f15\u64ce<\/h3>\n<p>eBPF\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u8fd0\u884c\u5728Linux\u5185\u6838\u4e2d\u7684\u865a\u62df\u673a\uff0c\u5176\u7a81\u7834\u6027\u5728\u4e8e\u5141\u8bb8<strong>\u5b89\u5168\u5730\u6ce8\u5165\u7528\u6237\u5b9a\u4e49\u7684\u7a0b\u5e8f<\/strong>\u5230\u5185\u6838\u7a7a\u95f4\u6267\u884c\u3002\u4e0e\u4f20\u7edf\u7684\u7cfb\u7edf\u8c03\u7528\u62e6\u622a\u65b9\u5f0f\u4e0d\u540c\uff0ceBPF\u901a\u8fc7\u9a8c\u8bc1\u673a\u5236\u786e\u4fdd\u4ee3\u7801\u5b89\u5168\u6027\u540e\uff0c\u76f4\u63a5\u5728\u4e8b\u4ef6\u89e6\u53d1\u65f6\u6267\u884c\u9884\u8bbe\u903b\u8f91\u3002\u8fd9\u79cd\u8bbe\u8ba1\u5e26\u6765\u4e86\u4e09\u5927\u9769\u547d\u6027\u7279\u5f81\uff1a<\/p>\n<ul>\n<li><strong>\u52a8\u6001\u4ee3\u7801\u6ce8\u5165<\/strong>\uff1a\u7b56\u7565\u4ee3\u7801\u53ef\u968f\u65f6\u52a0\u8f7d\/\u5378\u8f7d\uff0c\u65e0\u9700\u5185\u6838\u6a21\u5757\u7f16\u8bd1\n<\/li>\n<li><strong>\u96f6\u505c\u673a\u66f4\u65b0<\/strong>\uff1a\u7b56\u7565\u53d8\u66f4\u671f\u95f4\u4e1a\u52a1\u8fdb\u7a0b\u6301\u7eed\u8fd0\u884c\n<\/li>\n<li><strong>\u7ec6\u7c92\u5ea6\u89c2\u6d4b<\/strong>\uff1a\u652f\u6301\u4ece\u7cfb\u7edf\u8c03\u7528\u5230\u7f51\u7edc\u62a5\u6587\u7684\u5168\u6808\u8ffd\u8e2a\n<\/li>\n<\/ul>\n<p>\u5f53\u9700\u8981\u5b9e\u65f6\u62e6\u622a\u67d0\u4e2a\u53ef\u7591\u8fdb\u7a0b\u7684\u7cfb\u7edf\u8c03\u7528\u65f6\uff0c\u4f20\u7edf\u65b9\u6848\u9700\u91cd\u65b0\u914d\u7f6eSELinux\u7b56\u7565\u5e76\u91cd\u542f\u670d\u52a1\uff0c\u800ceBPF\u7a0b\u5e8f\u53ef\u901a\u8fc7<code>bpf_prog_load<\/code>\u7cfb\u7edf\u8c03\u7528\u5373\u65f6\u751f\u6548\uff0c\u54cd\u5e94\u901f\u5ea6\u4ece\u5c0f\u65f6\u7ea7\u538b\u7f29\u81f3\u6beb\u79d2\u7ea7\u3002<\/p>\n<hr>\n<h3 id=\"\u4e8c-\u52a8\u6001\u7b56\u7565\u6267\u884c\u7684\u6838\u5fc3\u673a\u5236\">\u4e8c\u3001\u52a8\u6001\u7b56\u7565\u6267\u884c\u7684\u6838\u5fc3\u673a\u5236<\/h3>\n<h4 id=\"1-\u4e8b\u4ef6\u9a71\u52a8\u67b6\u6784\">1. \u4e8b\u4ef6\u9a71\u52a8\u67b6\u6784<\/h4>\n<p>eBPF\u7a0b\u5e8f\u901a\u8fc7\u6302\u8f7d\u5230<strong>\u5185\u6838\u4e8b\u4ef6\u94a9\u5b50\u70b9\uff08Hook Points\uff09<\/strong>\u5b9e\u73b0\u52a8\u6001\u89e6\u53d1\u3002\u8fd9\u4e9b\u94a9\u5b50\u8986\u76d6\u4e86\u7cfb\u7edf\u8c03\u7528\u3001\u7f51\u7edc\u6570\u636e\u5305\u3001\u51fd\u6570\u5165\u53e3\/\u51fa\u53e3\u7b49\u5173\u952e\u8def\u5f84\u3002\u5f53\u9884\u8bbe\u4e8b\u4ef6\u53d1\u751f\u65f6\uff08\u5982TCP\u8fde\u63a5\u5efa\u7acb\uff09\uff0c\u5185\u6838\u81ea\u52a8\u6267\u884c\u5173\u8054\u7684eBPF\u7a0b\u5e8f\u903b\u8f91\u3002<\/p>\n<h4 id=\"2-\u7b56\u7565\u70ed\u66f4\u65b0\u6280\u672f\">2. \u7b56\u7565\u70ed\u66f4\u65b0\u6280\u672f<\/h4>\n<p>\u901a\u8fc7<code>BPF_MAP<\/code>\u6570\u636e\u7ed3\u6784\uff0ceBPF\u5b9e\u73b0\u4e86\u8fd0\u884c\u4e2d\u7b56\u7565\u7684\u52a8\u6001\u8c03\u6574\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code class=\"language-c\">\/\/ \u5b9a\u4e49\u5b58\u50a8\u7b56\u7565\u89c4\u5219\u7684\u54c8\u5e0c\u8868  \r\nstruct bpf_map_def SEC(&quot;maps&quot;) policy_map = {  \r\n.type = BPF_MAP_TYPE_HASH,  \r\n.key_size = sizeof(u32),  \r\n.value_size = sizeof(struct policy),  \r\n.max_entries = 1024,  \r\n};  \r\n<\/code><\/pre>\n<p>\u7528\u6237\u6001\u7a0b\u5e8f\u53ef\u968f\u65f6\u4fee\u6539\u8be5\u6620\u5c04\u8868\u4e2d\u7684\u7b56\u7565\u53c2\u6570\uff0c\u5185\u6838\u6001\u7a0b\u5e8f\u5219\u901a\u8fc7<code>bpf_map_lookup_elem<\/code>\u5b9e\u65f6\u83b7\u53d6\u6700\u65b0\u89c4\u5219\uff0c\u5b9e\u73b0<strong>\u539f\u5b50\u7ea7\u7b56\u7565\u5207\u6362<\/strong>\u3002<\/p>\n<h4 id=\"3-\u5b89\u5168\u6821\u9a8c\u4f53\u7cfb\">3. \u5b89\u5168\u6821\u9a8c\u4f53\u7cfb<\/h4>\n<p>eBPF\u9a8c\u8bc1\u5668\uff08Verifier\uff09\u4f1a\u5bf9\u52a0\u8f7d\u7684\u7a0b\u5e8f\u8fdb\u884c\u8d85\u8fc750\u9879\u5b89\u5168\u68c0\u67e5\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u5faa\u73af\u6b21\u6570\u9650\u5236\uff08\u9632\u6b62\u6b7b\u5faa\u73af\uff09\n<\/li>\n<li>\u5185\u5b58\u8bbf\u95ee\u8fb9\u754c\u6821\u9a8c\n<\/li>\n<li>\u6307\u9488\u5408\u6cd5\u6027\u9a8c\u8bc1<br \/>\n\u8fd9\u5957\u673a\u5236\u786e\u4fdd\u4e86\u52a8\u6001\u6ce8\u5165\u7684\u4ee3\u7801\u4e0d\u4f1a\u5bfc\u81f4\u5185\u6838\u5d29\u6e83\uff0c\u4e3a\u7b56\u7565\u7684\u52a8\u6001\u8c03\u6574\u63d0\u4f9b\u4e86\u5b89\u5168\u62a4\u57ce\u6cb3\u3002\n<\/li>\n<\/ul>\n<hr>\n<h3 id=\"\u4e09-\u5178\u578b\u5e94\u7528\u573a\u666f\u89e3\u6790\">\u4e09\u3001\u5178\u578b\u5e94\u7528\u573a\u666f\u89e3\u6790<\/h3>\n<h4 id=\"1-\u52a8\u6001\u5b89\u5168\u9632\u62a4\">1. \u52a8\u6001\u5b89\u5168\u9632\u62a4<\/h4>\n<p>\u4e91\u5b89\u5168\u4ea7\u54c1\u5982<strong>Falco<\/strong>\u5229\u7528eBPF\u5b9e\u73b0\u8fd0\u884c\u65f6\u5165\u4fb5\u68c0\u6d4b\u3002\u5f53\u68c0\u6d4b\u5230\u5f02\u5e38\u8fdb\u7a0b\u884c\u4e3a\u65f6\uff0ceBPF\u7a0b\u5e8f\u53ef\u52a8\u6001\u4e0b\u53d1\u963b\u65ad\u7b56\u7565\uff0c\u800c\u4f20\u7edf\u65b9\u6848\u9700\u8981\u7b49\u5f85\u5ba1\u8ba1\u65e5\u5fd7\u5206\u6790\u540e\u624d\u80fd\u54cd\u5e94\u3002<\/p>\n<h4 id=\"2-\u81ea\u9002\u5e94\u7f51\u7edc\u63a7\u5236\">2. \u81ea\u9002\u5e94\u7f51\u7edc\u63a7\u5236<\/h4>\n<p>Cilium\u7f51\u7edc\u65b9\u6848\u901a\u8fc7eBPF\u5b9e\u73b0<strong>\u5fae\u670d\u52a1\u7c92\u5ea6\u7684\u6d41\u91cf\u63a7\u5236<\/strong>\u3002\u4f8b\u5982\u5728Kubernetes\u96c6\u7fa4\u4e2d\uff0c\u53ef\u57fa\u4e8ePod\u6807\u7b7e\u5b9e\u65f6\u8c03\u6574\u7f51\u7edc\u7b56\u7565\uff0c\u652f\u6301\u7070\u5ea6\u53d1\u5e03\u671f\u95f4\u7684\u52a8\u6001\u8def\u7531\u5207\u6362\u3002<\/p>\n<h4 id=\"3-\u53ef\u89c2\u6d4b\u6027\u589e\u5f3a\">3. \u53ef\u89c2\u6d4b\u6027\u589e\u5f3a<\/h4>\n<p>Facebook\u5f00\u53d1\u7684<strong>Katran<\/strong>\u8d1f\u8f7d\u5747\u8861\u5668\u4f7f\u7528eBPF\u6536\u96c6TCP\u6d41\u6307\u6807\uff0c\u5728\u4e0d\u4fee\u6539\u5e94\u7528\u4ee3\u7801\u7684\u524d\u63d0\u4e0b\uff0c\u5b9e\u73b0\u6bcf\u79d2\u767e\u4e07\u7ea7\u6570\u636e\u5305\u7684\u5b9e\u65f6\u7edf\u8ba1\uff0c\u7edf\u8ba1\u7b56\u7565\u53ef\u6309\u9700\u52a8\u6001\u8c03\u6574\u3002<\/p>\n<hr>\n<h3 id=\"\u56db-\u7a81\u7834\u5b89\u5168\u4e0e\u6027\u80fd\u7684\u5e73\u8861\">\u56db\u3001\u7a81\u7834\u5b89\u5168\u4e0e\u6027\u80fd\u7684\u5e73\u8861<\/h3>\n<h4 id=\"1-\u96f6\u62f7\u8d1d\u6570\u636e\u4f20\u9012\">1. \u96f6\u62f7\u8d1d\u6570\u636e\u4f20\u9012<\/h4>\n<p>eBPF\u7684<code>perf buffer<\/code>\u4e0e<code>ring buffer<\/code>\u673a\u5236\u5141\u8bb8\u7528\u6237\u6001\u4e0e\u5185\u6838\u6001\u5171\u4eab\u5185\u5b58\u533a\u57df\u3002\u5728\u7f51\u7edc\u68c0\u6d4b\u573a\u666f\u4e2d\uff0c\u62a5\u6587\u5206\u6790\u7b56\u7565\u53ef\u76f4\u63a5\u8bbf\u95ee\u539f\u59cb\u6570\u636e\u5305\uff0c\u907f\u514d\u4e86\u4f20\u7edf\u65b9\u6848\u4e2d\u7684\u591a\u6b21\u5185\u5b58\u62f7\u8d1d\u3002<\/p>\n<h4 id=\"2-jit\u7f16\u8bd1\u4f18\u5316\">2. JIT\u7f16\u8bd1\u4f18\u5316<\/h4>\n<p>\u5185\u6838\u5c06\u9a8c\u8bc1\u901a\u8fc7\u7684eBPF\u5b57\u8282\u7801\u5373\u65f6\u7f16\u8bd1\u4e3a\u673a\u5668\u7801\uff0c\u4f7f\u5f97\u52a8\u6001\u7b56\u7565\u7684\u6267\u884c\u6548\u7387\u63a5\u8fd1\u539f\u751f\u4ee3\u7801\u3002\u6d4b\u8bd5\u6570\u636e\u663e\u793a\uff0ceBPF\u5904\u7406\u7f51\u7edc\u7b56\u7565\u7684\u541e\u5410\u91cf\u53ef\u8fbeXDP\uff08Express Data Path\uff09\u6a21\u5f0f\u768480%\u4ee5\u4e0a\u3002<\/p>\n<h4 id=\"3-\u7b56\u7565\u7ea7\u8d44\u6e90\u9694\u79bb\">3. \u7b56\u7565\u7ea7\u8d44\u6e90\u9694\u79bb<\/h4>\n<p>\u901a\u8fc7<code>cgroup<\/code>\u7ed1\u5b9a\u548cCPU\u914d\u989d\u63a7\u5236\uff0ceBPF\u7a0b\u5e8f\u53ef\u9650\u5236\u5355\u4e2a\u7b56\u7565\u7684\u6700\u5927\u8d44\u6e90\u6d88\u8017\u3002\u8fd9\u79cd\u8bbe\u8ba1\u9632\u6b62\u4e86\u6076\u610f\u7b56\u7565\u5bfc\u81f4\u7684\u8d44\u6e90\u62a2\u5360\uff0c\u4fdd\u969c\u4e86\u6838\u5fc3\u4e1a\u52a1\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n<hr>\n<h3 id=\"\u4e94-\u672a\u6765\u6f14\u8fdb\u65b9\u5411\">\u4e94\u3001\u672a\u6765\u6f14\u8fdb\u65b9\u5411<\/h3>\n<p>\u968f\u7740eBPF\u5728Linux 5.18\u5185\u6838\u4e2d\u652f\u6301<strong>\u5c3e\u8c03\u7528\uff08Tail Call\uff09<\/strong>\u548c<strong>\u7c7b\u578b\u5316\u6307\u9488<\/strong>\uff0c\u52a8\u6001\u7b56\u7565\u7684\u590d\u6742\u5ea6\u4e0a\u9650\u6301\u7eed\u63d0\u5347\u3002\u5fae\u8f6f\u5df2\u5c06eBPF\u79fb\u690d\u5230Windows\u5185\u6838\uff0c\u800c\u8c37\u6b4c\u7684gVisor\u5bb9\u5668\u6c99\u7bb1\u5219\u901a\u8fc7eBPF\u5b9e\u73b0\u5b89\u5168\u7b56\u7565\u7684\u52a8\u6001\u52a0\u56fa\u3002\u53ef\u4ee5\u9884\u89c1\uff0c\u8fd9\u79cd<strong>\u5185\u6838\u53ef\u7f16\u7a0b<\/strong>\u8303\u5f0f\u6b63\u5728\u91cd\u5851\u57fa\u7840\u8bbe\u65bd\u7684\u6784\u5efa\u65b9\u5f0f\u2014\u2014\u672a\u6765\u7684\u7cfb\u7edf\u5c06\u4e0d\u518d\u662f\u50f5\u5316\u7684\u89c4\u5219\u6267\u884c\u8005\uff0c\u800c\u662f\u5177\u5907\u5b9e\u65f6\u9002\u5e94\u80fd\u529b\u7684\u667a\u80fd\u4f53\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u6570\u5b57\u5316\u8f6c\u578b\u7684\u6d6a\u6f6e\u4e2d\uff0c\u4f01\u4e1a\u57fa\u7840\u8bbe\u65bd\u7684\u590d\u6742\u6027\u4e0e\u65e5\u4ff1\u589e\u3002\u9762\u5bf9\u77ac\u606f\u4e07\u53d8\u7684\u4e1a\u52a1\u9700\u6c42\uff0c\u4f20\u7edf\u57fa\u4e8e\u9759\u6001\u89c4\u5219\u7684\u8fd0\u7ef4\u7b56\u7565\u663e\u5f97\u6349\u895f\u89c1\u8098\u2014\u2014\u6bcf\u6b21\u7b56\u7565\u8c03\u6574\u90fd\u9700\u8981\u7cfb\u7edf\u505c\u673a\u3001\u670d\u52a1\u91cd\u542f\uff0c\u8fd9\u4e0d\u4ec5\u5f71\u54cd\u4e1a\u52a1\u8fde\u7eed\u6027\uff0c\u66f4\u5728\u4e91\u539f\u751f\u573a\u666f\u4e0b\u66b4\u9732\u4e86\u81f4\u547d\u77ed\u677f\u3002\u5982\u4f55\u5728\u4e0d\u4e2d\u65ad\u670d\u52a1\u7684\u524d\u63d0\u4e0b\u5b9e\u73b0\u7b56\u7565\u7684\u52a8\u6001\u8c03\u6574\uff1f\u8fd9\u4e00\u547d\u9898\u6b63\u5728\u5c06eBPF\uff08Extended Berkeley Packet Filter\uff09\u6280\u672f\u63a8\u5411\u821e\u53f0\u4e2d\u592e\u3002 \u4e00\u3001eBPF\uff1a\u5185\u6838\u7ea7\u7684\u52a8\u6001\u6267\u884c\u5f15\u64ce eBPF\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u8fd0\u884c\u5728Linux\u5185\u6838\u4e2d\u7684\u865a\u62df\u673a\uff0c\u5176\u7a81\u7834\u6027\u5728\u4e8e\u5141\u8bb8\u5b89\u5168\u5730\u6ce8\u5165\u7528\u6237\u5b9a\u4e49\u7684\u7a0b\u5e8f\u5230\u5185\u6838\u7a7a\u95f4\u6267\u884c\u3002\u4e0e\u4f20\u7edf\u7684\u7cfb\u7edf\u8c03\u7528\u62e6\u622a\u65b9\u5f0f\u4e0d\u540c\uff0ceBPF\u901a\u8fc7\u9a8c\u8bc1\u673a\u5236\u786e\u4fdd\u4ee3\u7801\u5b89\u5168\u6027\u540e\uff0c\u76f4\u63a5\u5728\u4e8b\u4ef6\u89e6\u53d1\u65f6\u6267\u884c\u9884\u8bbe\u903b\u8f91\u3002\u8fd9\u79cd\u8bbe\u8ba1\u5e26\u6765\u4e86\u4e09\u5927\u9769\u547d\u6027\u7279\u5f81\uff1a \u52a8\u6001\u4ee3\u7801\u6ce8\u5165\uff1a\u7b56\u7565\u4ee3\u7801\u53ef\u968f\u65f6\u52a0\u8f7d\/\u5378\u8f7d\uff0c\u65e0\u9700\u5185\u6838\u6a21\u5757\u7f16\u8bd1 \u96f6\u505c\u673a\u66f4\u65b0\uff1a\u7b56\u7565\u53d8\u66f4\u671f\u95f4\u4e1a\u52a1\u8fdb\u7a0b\u6301\u7eed\u8fd0\u884c \u7ec6\u7c92\u5ea6\u89c2\u6d4b\uff1a\u652f\u6301\u4ece\u7cfb\u7edf\u8c03\u7528\u5230\u7f51\u7edc\u62a5\u6587\u7684\u5168\u6808\u8ffd\u8e2a \u5f53\u9700\u8981\u5b9e\u65f6\u62e6\u622a\u67d0\u4e2a\u53ef\u7591\u8fdb\u7a0b\u7684\u7cfb\u7edf\u8c03\u7528\u65f6\uff0c\u4f20\u7edf\u65b9\u6848\u9700\u91cd\u65b0\u914d\u7f6eSELinux\u7b56\u7565\u5e76\u91cd\u542f\u670d\u52a1\uff0c\u800ceBPF\u7a0b\u5e8f\u53ef\u901a\u8fc7bpf_prog_load\u7cfb\u7edf\u8c03\u7528\u5373\u65f6\u751f\u6548\uff0c\u54cd\u5e94\u901f\u5ea6\u4ece\u5c0f\u65f6\u7ea7\u538b\u7f29\u81f3\u6beb\u79d2\u7ea7\u3002 \u4e8c\u3001\u52a8\u6001\u7b56\u7565\u6267\u884c\u7684\u6838\u5fc3\u673a\u5236 1. \u4e8b\u4ef6\u9a71\u52a8\u67b6\u6784 eBPF\u7a0b\u5e8f\u901a\u8fc7\u6302\u8f7d\u5230\u5185\u6838\u4e8b\u4ef6\u94a9\u5b50\u70b9\uff08Hook Points\uff09\u5b9e\u73b0\u52a8\u6001\u89e6\u53d1\u3002\u8fd9\u4e9b\u94a9\u5b50\u8986\u76d6\u4e86\u7cfb\u7edf\u8c03\u7528\u3001\u7f51\u7edc\u6570\u636e\u5305\u3001\u51fd\u6570\u5165\u53e3\/\u51fa\u53e3\u7b49\u5173\u952e\u8def\u5f84\u3002\u5f53\u9884\u8bbe\u4e8b\u4ef6\u53d1\u751f\u65f6\uff08\u5982TCP\u8fde\u63a5\u5efa\u7acb\uff09\uff0c\u5185\u6838\u81ea\u52a8\u6267\u884c\u5173\u8054\u7684eBPF\u7a0b\u5e8f\u903b\u8f91\u3002 2. \u7b56\u7565\u70ed\u66f4\u65b0\u6280\u672f \u901a\u8fc7BPF_MAP\u6570\u636e\u7ed3\u6784\uff0ceBPF\u5b9e\u73b0\u4e86\u8fd0\u884c\u4e2d\u7b56\u7565\u7684\u52a8\u6001\u8c03\u6574\u3002\u4f8b\u5982\uff1a \/\/ \u5b9a\u4e49\u5b58\u50a8\u7b56\u7565\u89c4\u5219\u7684\u54c8\u5e0c\u8868 struct bpf_map_def SEC(&quot;maps&quot;) policy_map = { .type = BPF_MAP_TYPE_HASH, .key_size = sizeof(u32), .value_size = sizeof(struct policy), .max_entries = 1024, }; \u7528\u6237\u6001\u7a0b\u5e8f\u53ef\u968f\u65f6\u4fee\u6539\u8be5\u6620\u5c04\u8868\u4e2d\u7684\u7b56\u7565\u53c2\u6570\uff0c\u5185\u6838\u6001\u7a0b\u5e8f\u5219\u901a\u8fc7bpf_map_lookup_elem\u5b9e\u65f6\u83b7\u53d6\u6700\u65b0\u89c4\u5219\uff0c\u5b9e\u73b0\u539f\u5b50\u7ea7\u7b56\u7565\u5207\u6362\u3002 3. \u5b89\u5168\u6821\u9a8c\u4f53\u7cfb eBPF\u9a8c\u8bc1\u5668\uff08Verifier\uff09\u4f1a\u5bf9\u52a0\u8f7d\u7684\u7a0b\u5e8f\u8fdb\u884c\u8d85\u8fc750\u9879\u5b89\u5168\u68c0\u67e5\uff0c\u5305\u62ec\uff1a \u5faa\u73af\u6b21\u6570\u9650\u5236\uff08\u9632\u6b62\u6b7b\u5faa\u73af\uff09 \u5185\u5b58\u8bbf\u95ee\u8fb9\u754c\u6821\u9a8c \u6307\u9488\u5408\u6cd5\u6027\u9a8c\u8bc1 \u8fd9\u5957\u673a\u5236\u786e\u4fdd\u4e86\u52a8\u6001\u6ce8\u5165\u7684\u4ee3\u7801\u4e0d\u4f1a\u5bfc\u81f4\u5185\u6838\u5d29\u6e83\uff0c\u4e3a\u7b56\u7565\u7684\u52a8\u6001\u8c03\u6574\u63d0\u4f9b\u4e86\u5b89\u5168\u62a4\u57ce\u6cb3\u3002 \u4e09\u3001\u5178\u578b\u5e94\u7528\u573a\u666f\u89e3\u6790 1. \u52a8\u6001\u5b89\u5168\u9632\u62a4 \u4e91\u5b89\u5168\u4ea7\u54c1\u5982Falco\u5229\u7528eBPF\u5b9e\u73b0\u8fd0\u884c\u65f6\u5165\u4fb5\u68c0\u6d4b\u3002\u5f53\u68c0\u6d4b\u5230\u5f02\u5e38\u8fdb\u7a0b\u884c\u4e3a\u65f6\uff0ceBPF\u7a0b\u5e8f\u53ef\u52a8\u6001\u4e0b\u53d1\u963b\u65ad\u7b56\u7565\uff0c\u800c\u4f20\u7edf\u65b9\u6848\u9700\u8981\u7b49\u5f85\u5ba1\u8ba1\u65e5\u5fd7\u5206\u6790\u540e\u624d\u80fd\u54cd\u5e94\u3002 2. \u81ea\u9002\u5e94\u7f51\u7edc\u63a7\u5236 Cilium\u7f51\u7edc\u65b9\u6848\u901a\u8fc7eBPF\u5b9e\u73b0\u5fae\u670d\u52a1\u7c92\u5ea6\u7684\u6d41\u91cf\u63a7\u5236\u3002\u4f8b\u5982\u5728Kubernetes\u96c6\u7fa4\u4e2d\uff0c\u53ef\u57fa\u4e8ePod\u6807\u7b7e\u5b9e\u65f6\u8c03\u6574\u7f51\u7edc\u7b56\u7565\uff0c\u652f\u6301\u7070\u5ea6\u53d1\u5e03\u671f\u95f4\u7684\u52a8\u6001\u8def\u7531\u5207\u6362\u3002 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-37320","post","type-post","status-publish","format-standard","hentry","category-product-news"],"_links":{"self":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/37320","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=37320"}],"version-history":[{"count":1,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/37320\/revisions"}],"predecessor-version":[{"id":37322,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/37320\/revisions\/37322"}],"wp:attachment":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media?parent=37320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/categories?post=37320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/tags?post=37320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}