{"id":22739,"date":"2024-11-25T16:39:12","date_gmt":"2024-11-25T08:39:12","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=22739"},"modified":"2024-11-25T16:39:12","modified_gmt":"2024-11-25T08:39:12","slug":"ebpf%e7%a7%91%e6%99%ae%ef%bc%9a%e5%af%b9%e7%bd%91%e7%bb%9c%e6%b5%81%e9%87%8f%e6%8e%a7%e5%88%b6%e7%9a%84%e5%8d%93%e8%b6%8a%e8%b4%a1%e7%8c%ae","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/22739.html","title":{"rendered":"eBPF\u79d1\u666e\uff1a\u5bf9\u7f51\u7edc\u6d41\u91cf\u63a7\u5236\u7684\u5353\u8d8a\u8d21\u732e"},"content":{"rendered":"

\t\t\t\teBPF<\/a>\uff08Extended Berkeley Packet Filter\uff09\u4f5c\u4e3a\u4e00\u79cd\u65b0\u5174\u7684\u6280\u672f\uff0c\u8fd1\u5e74\u6765\u5728\u7f51\u7edc\u5b89\u5168\u548c\u6d41\u91cf\u63a7\u5236\u9886\u57df\u5c55\u73b0\u51fa\u4e86\u5353\u8d8a\u7684\u8d21\u732e\u3002\u672c\u6587\u5c06\u4eceeBPF<\/a>\u7684\u57fa\u672c\u6982\u5ff5\u3001\u6280\u672f\u539f\u7406\u3001\u5e94\u7528\u573a\u666f\u53ca\u5176\u5728\u7f51\u7edc\u6d41\u91cf\u63a7\u5236\u4e2d\u7684\u5177\u4f53\u5e94\u7528\u7b49\u65b9\u9762\u8fdb\u884c\u8be6\u7ec6\u79d1\u666e\uff0c\u5e2e\u52a9\u8bfb\u8005\u5168\u9762\u4e86\u89e3\u8fd9\u4e00\u6280\u672f\u7684\u5f3a\u5927\u529f\u80fd\u548c\u6f5c\u529b\u3002<\/p>\n\n\n\n\n

eBPF\u7684\u57fa\u672c\u6982\u5ff5<\/h3>\n\n\n\n\n

eBPF\u662fBPF\uff08Berkeley Packet Filter\uff09\u7684\u6269\u5c55\u7248\u672c\u3002BPF\u6700\u521d\u7531\u52b3\u4f26\u65af\u4f2f\u514b\u5229\u56fd\u5bb6\u5b9e\u9a8c\u5ba4\u7684\u53f2\u8482\u592b\u00b7\u9ea6\u5361\u9521\uff08Steve McCanne\uff09\u548c\u8303\u00b7\u96c5\u5404\u5e03\u68ee\uff08Van Jacobson\uff09\u57281992\u5e74\u63d0\u51fa\uff0c\u4e3b\u8981\u7528\u4e8e\u7f51\u7edc\u6570\u636e\u5305\u7684\u8fc7\u6ee4\u3002\u968f\u7740\u6280\u672f\u7684\u53d1\u5c55\uff0cBPF\u7684\u529f\u80fd\u9010\u6e10\u6269\u5c55\uff0c\u5f62\u6210\u4e86\u4eca\u5929\u7684eBPF\u3002<\/p>\n\n\n\n\n\n\n\n\n

<\/p>\n\n\n\n\n\n\n\n\n\n

eBPF\u4e0d\u4ec5\u9650\u4e8e\u7f51\u7edc\u6570\u636e\u5305\u8fc7\u6ee4\uff0c\u8fd8\u80fd\u591f\u5728\u5185\u6838\u4e2d\u8fd0\u884c\u7528\u6237\u5b9a\u4e49\u7684\u7a0b\u5e8f\uff0c\u5b9e\u73b0\u5bf9\u7cfb\u7edf\u884c\u4e3a\u7684\u76d1\u63a7\u3001\u5206\u6790\u548c\u63a7\u5236\u3002\u5176\u6838\u5fc3\u601d\u60f3\u662f\u5c06\u7528\u6237\u7f16\u5199\u7684\u7a0b\u5e8f\u52a0\u8f7d\u5230\u5185\u6838\u4e2d\uff0c\u5e76\u5728\u7279\u5b9a\u7684\u94a9\u5b50\u70b9\uff08hook points\uff09\u6267\u884c\uff0c\u4ece\u800c\u5b9e\u73b0\u5bf9\u7cfb\u7edf\u884c\u4e3a\u7684\u7cbe\u7ec6\u5316\u7ba1\u7406\u3002<\/p>\n\n\n\n\n

eBPF\u7684\u6280\u672f\u539f\u7406<\/h3>\n\n\n\n\n

1. eBPF\u7a0b\u5e8f\u7684\u751f\u547d\u5468\u671f<\/h4>\n\n\n\n\n

eBPF\u7a0b\u5e8f\u7684\u751f\u547d\u5468\u671f\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u9636\u6bb5\uff1a<\/p>\n\n\n\n\n

    \n\n\n
  • \u7f16\u5199<\/strong>\uff1a\u4f7f\u7528\u9ad8\u7ea7\u8bed\u8a00\uff08\u5982C\u8bed\u8a00\uff09\u7f16\u5199eBPF\u7a0b\u5e8f\u3002<\/li>\n\n\n\n\n
  • \u7f16\u8bd1<\/strong>\uff1a\u5c06\u9ad8\u7ea7\u8bed\u8a00\u7f16\u5199\u7684\u7a0b\u5e8f\u7f16\u8bd1\u6210eBPF\u5b57\u8282\u7801\u3002<\/li>\n\n\n\n\n
  • \u52a0\u8f7d<\/strong>\uff1a\u901a\u8fc7\u7528\u6237\u7a7a\u95f4\u5de5\u5177\uff08\u5982bpftrace\u3001bcc\u7b49\uff09\u5c06eBPF\u5b57\u8282\u7801\u52a0\u8f7d\u5230\u5185\u6838\u3002<\/li>\n\n\n\n\n
  • \u9a8c\u8bc1<\/strong>\uff1a\u5185\u6838\u5bf9\u52a0\u8f7d\u7684eBPF\u7a0b\u5e8f\u8fdb\u884c\u5b89\u5168\u6027\u9a8c\u8bc1\uff0c\u786e\u4fdd\u5176\u4e0d\u4f1a\u5bf9\u7cfb\u7edf\u7a33\u5b9a\u6027\u9020\u6210\u5f71\u54cd\u3002<\/li>\n\n\n\n\n
  • \u6267\u884c<\/strong>\uff1a\u9a8c\u8bc1\u901a\u8fc7\u540e\uff0ceBPF\u7a0b\u5e8f\u5728\u5185\u6838\u4e2d\u7684\u7279\u5b9a\u94a9\u5b50\u70b9\u6267\u884c\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

    2. eBPF\u865a\u62df\u673a<\/h4>\n\n\n\n\n

    eBPF\u7a0b\u5e8f\u5728\u5185\u6838\u4e2d\u8fd0\u884c\u4f9d\u8d56\u4e8e\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684\u865a\u62df\u673a\u2014\u2014eBPF\u865a\u62df\u673a\u3002\u8be5\u865a\u62df\u673a\u5bf9eBPF\u5b57\u8282\u7801\u8fdb\u884c\u89e3\u91ca\u6267\u884c\uff0c\u786e\u4fdd\u7a0b\u5e8f\u7684\u5b89\u5168\u6027\u548c\u9ad8\u6548\u6027\u3002eBPF\u865a\u62df\u673a\u7684\u6307\u4ee4\u96c6\u8bbe\u8ba1\u7b80\u6d01\uff0c\u80fd\u591f\u6709\u6548\u9632\u6b62\u6076\u610f\u4ee3\u7801\u7684\u6267\u884c\u3002<\/p>\n\n\n\n\n

    3. \u94a9\u5b50\u70b9\uff08Hook Points\uff09<\/h4>\n\n\n\n\n

    eBPF\u7a0b\u5e8f\u53ef\u4ee5\u5728\u5185\u6838\u4e2d\u7684\u591a\u4e2a\u94a9\u5b50\u70b9\u6267\u884c\uff0c\u8fd9\u4e9b\u94a9\u5b50\u70b9\u5305\u62ec\uff1a<\/p>\n\n\n\n\n

      \n\n\n
    • \u7f51\u7edc\u5c42\u94a9\u5b50\u70b9<\/strong>\uff1a\u5982XDP\uff08eXpress Data Path\uff09\u3001TC\uff08Traffic Control\uff09\u7b49\uff0c\u7528\u4e8e\u7f51\u7edc\u6570\u636e\u5305\u7684\u5904\u7406\u3002<\/li>\n\n\n\n\n
    • \u7cfb\u7edf\u8c03\u7528\u94a9\u5b50\u70b9<\/strong>\uff1a\u5982sys_enter\u3001sys_exit\u7b49\uff0c\u7528\u4e8e\u76d1\u63a7\u548c\u63a7\u5236\u7cfb\u7edf\u8c03\u7528\u3002<\/li>\n\n\n\n\n
    • \u8ddf\u8e2a\u70b9\u94a9\u5b50\u70b9<\/strong>\uff1a\u5982kprobe\u3001uprobe\u7b49\uff0c\u7528\u4e8e\u5185\u6838\u548c\u7528\u6237\u7a7a\u95f4\u7a0b\u5e8f\u7684\u8ddf\u8e2a\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

      eBPF\u7684\u5e94\u7528\u573a\u666f<\/h3>\n\n\n\n\n

      eBPF\u7684\u5e94\u7528\u573a\u666f\u975e\u5e38\u5e7f\u6cdb\uff0c\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n\n

      1. \u7f51\u7edc\u76d1\u63a7\u4e0e\u5206\u6790<\/h4>\n\n\n\n\n

      eBPF\u53ef\u4ee5\u7528\u4e8e\u7f51\u7edc\u6d41\u91cf\u7684\u5b9e\u65f6\u76d1\u63a7\u548c\u5206\u6790\uff0c\u5e2e\u52a9\u7ba1\u7406\u5458\u4e86\u89e3\u7f51\u7edc\u72b6\u6001\u3001\u8bc6\u522b\u5f02\u5e38\u6d41\u91cf\u3001\u68c0\u6d4b\u6f5c\u5728\u7684\u5b89\u5168\u5a01\u80c1\u3002<\/p>\n\n\n\n\n

      2. \u6027\u80fd\u4f18\u5316<\/h4>\n\n\n\n\n

      \u901a\u8fc7eBPF\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u5bf9\u7cfb\u7edf\u7684\u6027\u80fd\u8fdb\u884c\u5b9e\u65f6\u76d1\u63a7\u548c\u4f18\u5316\uff0c\u5982\u8bc6\u522b\u6027\u80fd\u74f6\u9888\u3001\u4f18\u5316\u7f51\u7edc\u534f\u8bae\u6808\u7b49\u3002<\/p>\n\n\n\n\n

      3. \u5b89\u5168\u9632\u62a4<\/h4>\n\n\n\n\n

      eBPF\u53ef\u4ee5\u7528\u4e8e\u6784\u5efa\u9ad8\u6548\u7684\u5b89\u5168\u9632\u62a4\u673a\u5236\uff0c\u5982\u9632\u706b\u5899\u3001\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff08IDS\uff09\u7b49\uff0c\u5b9e\u73b0\u5bf9\u7f51\u7edc\u653b\u51fb\u7684\u5b9e\u65f6\u68c0\u6d4b\u548c\u9632\u5fa1\u3002<\/p>\n\n\n\n\n

      4. \u4e91\u539f\u751f\u5e94\u7528<\/h4>\n\n\n\n\n

      \u5728\u4e91\u539f\u751f\u73af\u5883\u4e2d\uff0ceBPF\u53ef\u4ee5\u7528\u4e8e\u670d\u52a1\u7f51\u683c\uff08Service Mesh\uff09\u7684\u5b9e\u73b0\u3001\u5bb9\u5668\u7f51\u7edc\u7684\u4f18\u5316\u7b49\uff0c\u63d0\u5347\u4e91\u539f\u751f\u5e94\u7528\u7684\u6027\u80fd\u548c\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n\n

      eBPF\u5728\u7f51\u7edc\u6d41\u91cf\u63a7\u5236\u4e2d\u7684\u5177\u4f53\u5e94\u7528<\/h3>\n\n\n\n\n

      1. XDP\uff08eXpress Data Path\uff09<\/h4>\n\n\n\n\n

      XDP\u662feBPF\u5728\u7f51\u7edc\u6d41\u91cf\u63a7\u5236\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u5e94\u7528\u3002XDP\u5141\u8bb8\u5728\u6570\u636e\u5305\u5230\u8fbe\u5185\u6838\u534f\u8bae\u6808\u4e4b\u524d\u8fdb\u884c\u5904\u7406\uff0c\u4ece\u800c\u5b9e\u73b0\u9ad8\u6548\u7684\u6d41\u91cf\u63a7\u5236\u3002XDP\u7684\u4e3b\u8981\u5e94\u7528\u573a\u666f\u5305\u62ec\uff1a<\/p>\n\n\n\n\n

        \n\n\n
      • DDoS\u9632\u5fa1<\/strong>\uff1a\u901a\u8fc7XDP\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u5728\u6570\u636e\u5305\u5230\u8fbe\u5185\u6838\u534f\u8bae\u6808\u4e4b\u524d\u8fdb\u884c\u8fc7\u6ee4\uff0c\u6709\u6548\u9632\u5fa1DDoS\u653b\u51fb\u3002<\/li>\n\n\n\n\n
      • \u8d1f\u8f7d\u5747\u8861<\/strong>\uff1aXDP\u53ef\u4ee5\u5b9e\u73b0\u9ad8\u6548\u7684\u6d41\u91cf\u5206\u53d1\uff0c\u63d0\u5347\u8d1f\u8f7d\u5747\u8861\u7684\u6027\u80fd\u3002<\/li>\n\n\n\n\n
      • \u6d41\u91cf\u76d1\u63a7<\/strong>\uff1aXDP\u53ef\u4ee5\u5bf9\u7f51\u7edc\u6d41\u91cf\u8fdb\u884c\u5b9e\u65f6\u76d1\u63a7\uff0c\u5e2e\u52a9\u7ba1\u7406\u5458\u4e86\u89e3\u7f51\u7edc\u72b6\u6001\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

        2. TC\uff08Traffic Control\uff09<\/h4>\n\n\n\n\n

        TC\u662fLinux\u5185\u6838\u4e2d\u7684\u6d41\u91cf\u63a7\u5236\u6846\u67b6\uff0ceBPF\u53ef\u4ee5\u901a\u8fc7TC\u94a9\u5b50\u70b9\u5b9e\u73b0\u5bf9\u7f51\u7edc\u6d41\u91cf\u7684\u7cbe\u7ec6\u5316\u7ba1\u7406\u3002TC\u7684\u4e3b\u8981\u5e94\u7528\u573a\u666f\u5305\u62ec\uff1a<\/p>\n\n\n\n\n

          \n\n\n
        • \u6d41\u91cf\u6574\u5f62<\/strong>\uff1a\u901a\u8fc7eBPF\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u5bf9\u7f51\u7edc\u6d41\u91cf\u8fdb\u884c\u6574\u5f62\uff0c\u786e\u4fdd\u5173\u952e\u4e1a\u52a1\u7684\u5e26\u5bbd\u9700\u6c42\u3002<\/li>\n\n\n\n\n
        • \u6d41\u91cf\u4f18\u5148\u7ea7<\/strong>\uff1aeBPF\u53ef\u4ee5\u5bf9\u4e0d\u540c\u7c7b\u578b\u7684\u6d41\u91cf\u8bbe\u7f6e\u4e0d\u540c\u7684\u4f18\u5148\u7ea7\uff0c\u63d0\u5347\u7f51\u7edc\u670d\u52a1\u7684\u8d28\u91cf\u3002<\/li>\n\n\n\n\n
        • \u6d41\u91cf\u76d1\u63a7<\/strong>\uff1aTC\u94a9\u5b50\u70b9\u53ef\u4ee5\u7528\u4e8e\u7f51\u7edc\u6d41\u91cf\u7684\u5b9e\u65f6\u76d1\u63a7\uff0c\u5e2e\u52a9\u7ba1\u7406\u5458\u8bc6\u522b\u5f02\u5e38\u6d41\u91cf\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

          3. cls_bpf\u548cact_bpf<\/h4>\n\n\n\n\n

          cls_bpf\uff08Classifier BPF\uff09\u548cact_bpf\uff08Action BPF\uff09\u662feBPF\u5728TC\u6846\u67b6\u4e2d\u7684\u4e24\u4e2a\u91cd\u8981\u7ec4\u4ef6\u3002cls_bpf\u7528\u4e8e\u6d41\u91cf\u7684\u5206\u7c7b\uff0cact_bpf\u7528\u4e8e\u6d41\u91cf\u7684\u5904\u7406\u3002\u901a\u8fc7\u8fd9\u4e24\u4e2a\u7ec4\u4ef6\uff0ceBPF\u53ef\u4ee5\u5b9e\u73b0\u590d\u6742\u7684\u6d41\u91cf\u63a7\u5236\u7b56\u7565\u3002<\/p>\n\n\n\n\n

            \n\n\n
          • \u6d41\u91cf\u5206\u7c7b<\/strong>\uff1acls_bpf\u53ef\u4ee5\u6839\u636e\u6570\u636e\u5305\u7684\u7279\u5f81\uff08\u5982\u6e90\u5730\u5740\u3001\u76ee\u7684\u5730\u5740\u3001\u7aef\u53e3\u53f7\u7b49\uff09\u8fdb\u884c\u5206\u7c7b\uff0c\u5b9e\u73b0\u5bf9\u6d41\u91cf\u7684\u7cbe\u7ec6\u5316\u7ba1\u7406\u3002<\/li>\n\n\n\n\n
          • \u6d41\u91cf\u5904\u7406<\/strong>\uff1aact_bpf\u53ef\u4ee5\u6839\u636e\u5206\u7c7b\u7ed3\u679c\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u5904\u7406\uff0c\u5982\u4e22\u5f03\u3001\u91cd\u5b9a\u5411\u7b49\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

            4. eBPF Maps<\/h4>\n\n\n\n\n

            eBPF Maps\u662feBPF\u7a0b\u5e8f\u4e2d\u7528\u4e8e\u5b58\u50a8\u6570\u636e\u7684\u7ed3\u6784\uff0c\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u9ad8\u6548\u7684\u6d41\u91cf\u63a7\u5236\u7b56\u7565\u3002\u5e38\u89c1\u7684eBPF Maps\u7c7b\u578b\u5305\u62ec\uff1a<\/p>\n\n\n\n\n

              \n\n\n
            • Hash Map<\/strong>\uff1a\u7528\u4e8e\u5b58\u50a8\u952e\u503c\u5bf9\uff0c\u9002\u7528\u4e8e\u5feb\u901f\u67e5\u627e\u548c\u66f4\u65b0\u3002<\/li>\n\n\n\n\n
            • Array Map<\/strong>\uff1a\u7528\u4e8e\u5b58\u50a8\u6570\u7ec4\uff0c\u9002\u7528\u4e8e\u7d22\u5f15\u8bbf\u95ee\u3002<\/li>\n\n\n\n\n
            • Per-CPU Map<\/strong>\uff1a\u7528\u4e8e\u5b58\u50a8\u6bcf\u4e2aCPU\u7684\u6570\u636e\uff0c\u9002\u7528\u4e8e\u5e76\u884c\u5904\u7406\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

              \u901a\u8fc7eBPF Maps\uff0c\u53ef\u4ee5\u5b9e\u73b0\u9ad8\u6548\u7684\u6d41\u91cf\u7edf\u8ba1\u3001\u6d41\u91cf\u76d1\u63a7\u7b49\u529f\u80fd\u3002<\/p>\n\n\n\n\n

              eBPF\u5728\u7f51\u7edc\u6d41\u91cf\u63a7\u5236\u4e2d\u7684\u4f18\u52bf<\/h3>\n\n\n\n\n

              1. \u9ad8\u6027\u80fd<\/h4>\n\n\n\n\n

              eBPF\u7a0b\u5e8f\u5728\u5185\u6838\u4e2d\u8fd0\u884c\uff0c\u907f\u514d\u4e86\u7528\u6237\u7a7a\u95f4\u548c\u5185\u6838\u7a7a\u95f4\u4e4b\u95f4\u7684\u9891\u7e41\u5207\u6362\uff0c\u663e\u8457\u63d0\u5347\u4e86\u5904\u7406\u6027\u80fd\u3002XDP\u548cTC\u7b49eBPF\u5e94\u7528\u53ef\u4ee5\u5728\u6570\u636e\u5305\u5230\u8fbe\u5185\u6838\u534f\u8bae\u6808\u4e4b\u524d\u8fdb\u884c\u5904\u7406\uff0c\u8fdb\u4e00\u6b65\u63d0\u5347\u4e86\u6d41\u91cf\u63a7\u5236\u7684\u6548\u7387\u3002<\/p>\n\n\n\n\n

              2. \u7075\u6d3b\u6027<\/h4>\n\n\n\n\n

              eBPF\u7a0b\u5e8f\u53ef\u4ee5\u4f7f\u7528\u9ad8\u7ea7\u8bed\u8a00\u7f16\u5199\uff0c\u652f\u6301\u590d\u6742\u7684\u903b\u8f91\u548c\u6570\u636e\u5904\u7406\uff0c\u63d0\u4f9b\u4e86\u6781\u5927\u7684\u7075\u6d3b\u6027\u3002\u7ba1\u7406\u5458\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u9700\u6c42\uff0c\u7f16\u5199\u5b9a\u5236\u5316\u7684\u6d41\u91cf\u63a7\u5236\u7b56\u7565\u3002<\/p>\n\n\n\n\n

              3. \u5b89\u5168\u6027<\/h4>\n\n\n\n\n

              eBPF\u7a0b\u5e8f\u5728\u52a0\u8f7d\u5230\u5185\u6838\u4e4b\u524d\uff0c\u4f1a\u7ecf\u8fc7\u4e25\u683c\u7684\u5b89\u5168\u6027\u9a8c\u8bc1\uff0c\u786e\u4fdd\u5176\u4e0d\u4f1a\u5bf9\u7cfb\u7edf\u7a33\u5b9a\u6027\u9020\u6210\u5f71\u54cd\u3002eBPF\u865a\u62df\u673a\u7684\u6307\u4ee4\u96c6\u8bbe\u8ba1\u7b80\u6d01\uff0c\u6709\u6548\u9632\u6b62\u4e86\u6076\u610f\u4ee3\u7801\u7684\u6267\u884c\u3002<\/p>\n\n\n\n\n

              4. \u53ef\u6269\u5c55\u6027<\/h4>\n\n\n\n\n

              eBPF\u6846\u67b6\u5177\u6709\u826f\u597d\u7684\u53ef\u6269\u5c55\u6027\uff0c\u652f\u6301\u591a\u79cd\u94a9\u5b50\u70b9\u548c\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u4ee5\u6ee1\u8db3\u4e0d\u540c\u573a\u666f\u7684\u9700\u6c42\u3002\u968f\u7740\u6280\u672f\u7684\u53d1\u5c55\uff0ceBPF\u7684\u529f\u80fd\u548c\u5e94\u7528\u573a\u666f\u8fd8\u5c06\u4e0d\u65ad\u6269\u5c55\u3002<\/p>\n\n\n\n\n

              eBPF\u7684\u6311\u6218\u4e0e\u672a\u6765<\/h3>\n\n\n\n\n

              \u5c3d\u7ba1eBPF\u5728\u7f51\u7edc\u6d41\u91cf\u63a7\u5236\u4e2d\u5c55\u73b0\u51fa\u4e86\u5353\u8d8a\u7684\u8d21\u732e\uff0c\u4f46\u4ecd\u9762\u4e34\u4e00\u4e9b\u6311\u6218\uff1a<\/p>\n\n\n\n\n

              1. \u7f16\u7a0b\u590d\u6742\u6027<\/h4>\n\n\n\n\n

              eBPF\u7a0b\u5e8f\u7684\u7f16\u5199\u548c\u8c03\u8bd5\u76f8\u5bf9\u590d\u6742\uff0c\u9700\u8981\u5f00\u53d1\u8005\u5177\u5907\u8f83\u9ad8\u7684\u6280\u672f\u6c34\u5e73\u3002\u76ee\u524d\uff0ceBPF\u7684\u5f00\u53d1\u5de5\u5177\u548c\u6587\u6863\u4ecd\u5728\u4e0d\u65ad\u5b8c\u5584\u4e2d\u3002<\/p>\n\n\n\n\n

              2. \u5185\u6838\u517c\u5bb9\u6027<\/h4>\n\n\n\n\n

              eBPF\u4f9d\u8d56\u4e8e\u5185\u6838\u7248\u672c\uff0c\u4e0d\u540c\u7248\u672c\u7684\u5185\u6838\u5bf9eBPF\u7684\u652f\u6301\u7a0b\u5ea6\u4e0d\u540c\u3002\u7ba1\u7406\u5458\u9700\u8981\u786e\u4fdd\u5185\u6838\u7248\u672c\u4e0eeBPF\u7a0b\u5e8f\u7684\u517c\u5bb9\u6027\u3002<\/p>\n\n\n\n\n

              3. \u6027\u80fd\u5f00\u9500<\/h4>\n\n\n\n\n

              \u5c3d\u7ba1eBPF\u7a0b\u5e8f\u5728\u5185\u6838\u4e2d\u8fd0\u884c\uff0c\u4f46\u4ecd\u7136\u5b58\u5728\u4e00\u5b9a\u7684\u6027\u80fd\u5f00\u9500\u3002\u5728\u5904\u7406\u5927\u89c4\u6a21\u6d41\u91cf\u65f6\uff0c\u9700\u8981\u4ed4\u7ec6\u4f18\u5316eBPF\u7a0b\u5e8f\uff0c\u786e\u4fdd\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n\n\n\n\n

              \u672a\u6765\uff0c\u968f\u7740eBPF\u6280\u672f\u7684\u4e0d\u65ad\u53d1\u5c55\u548c\u5b8c\u5584\uff0c\u5176\u5728\u7f51\u7edc\u6d41\u91cf\u63a7\u5236\u4e2d\u7684\u5e94\u7528\u5c06\u66f4\u52a0\u5e7f\u6cdb\u548c\u6df1\u5165\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u53ef\u80fd\u7684\u672a\u6765\u53d1\u5c55\u65b9\u5411\uff1a<\/p>\n\n\n\n\n

                \n\n\n
              • \u66f4\u4e30\u5bcc\u7684\u5e94\u7528\u573a\u666f<\/strong>\uff1aeBPF\u5c06\u5728\u66f4\u591a\u9886\u57df\u5f97\u5230\u5e94\u7528\uff0c\u5982\u7269\u8054\u7f51\u3001\u8fb9\u7f18\u8ba1\u7b97\u7b49\u3002<\/li>\n\n\n\n\n
              • \u66f4\u5b8c\u5584\u7684\u5f00\u53d1\u5de5\u5177<\/strong>\uff1aeBPF\u7684\u5f00\u53d1\u5de5\u5177\u548c\u6587\u6863\u5c06\u66f4\u52a0\u5b8c\u5584\uff0c\u964d\u4f4e\u5f00\u53d1\u95e8\u69db\u3002<\/li>\n\n\n\n\n
              • \u66f4\u9ad8\u7684\u6027\u80fd<\/strong>\uff1a\u901a\u8fc7\u4f18\u5316eBPF\u865a\u62df\u673a\u548c\u6307\u4ee4\u96c6\uff0c\u8fdb\u4e00\u6b65\u63d0\u5347eBPF\u7a0b\u5e8f\u7684\u6267\u884c\u6548\u7387\u3002<\/li>\n\n\n\n\n
              • \u66f4\u597d\u7684\u5b89\u5168\u6027<\/strong>\uff1a\u901a\u8fc7\u52a0\u5f3aeBPF\u7a0b\u5e8f\u7684\u5b89\u5168\u6027\u9a8c\u8bc1\uff0c\u63d0\u5347\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

                \u7ed3\u8bed<\/h3>\n\n\n\n\n

                eBPF\u4f5c\u4e3a\u4e00\u79cd\u65b0\u5174\u7684\u6280\u672f\uff0c\u5728\u7f51\u7edc\u6d41\u91cf\u63a7\u5236\u9886\u57df\u5c55\u73b0\u51fa\u4e86\u5353\u8d8a\u7684\u8d21\u732e\u3002\u901a\u8fc7XDP\u3001TC\u7b49\u5e94\u7528\uff0ceBPF\u5b9e\u73b0\u4e86\u9ad8\u6548\u7684\u6d41\u91cf\u76d1\u63a7\u3001\u6d41\u91cf\u6574\u5f62\u3001DDoS\u9632\u5fa1\u7b49\u529f\u80fd\uff0c\u663e\u8457\u63d0\u5347\u4e86\u7f51\u7edc\u6027\u80fd\u548c\u5b89\u5168\u6027\u3002\u5c3d\u7ba1eBPF\u4ecd\u9762\u4e34\u4e00\u4e9b\u6311\u6218\uff0c\u4f46\u5176\u5f3a\u5927\u7684\u529f\u80fd\u548c\u6f5c\u529b\u4f7f\u5176\u6210\u4e3a\u672a\u6765\u7f51\u7edc\u6d41\u91cf\u63a7\u5236\u7684\u91cd\u8981\u6280\u672f\u4e4b\u4e00\u3002\u968f\u7740\u6280\u672f\u7684\u4e0d\u65ad\u53d1\u5c55\u548c\u5b8c\u5584\uff0ceBPF\u5c06\u5728\u66f4\u591a\u9886\u57df\u5f97\u5230\u5e94\u7528\uff0c\u4e3a\u7f51\u7edc\u5b89\u5168\u548c\u6027\u80fd\u4f18\u5316\u63d0\u4f9b\u66f4\u5f3a\u5927\u7684\u652f\u6301\u3002<\/p>\n\n\n]]>\t\t<\/p>\n","protected":false},"excerpt":{"rendered":"

                \t\t\t\t\t\t<\/p>\n","protected":false},"author":5,"featured_media":22740,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-22739","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-discussion"],"_links":{"self":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/22739","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\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/comments?post=22739"}],"version-history":[{"count":0,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/22739\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media\/22740"}],"wp:attachment":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media?parent=22739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/categories?post=22739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/tags?post=22739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}