{"id":51654,"date":"2024-12-03T11:37:02","date_gmt":"2024-12-03T03:37:02","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51654\/"},"modified":"2024-12-03T11:37:02","modified_gmt":"2024-12-03T03:37:02","slug":"%e6%8e%a2%e8%ae%a8linux%e5%8d%8f%e8%ae%ae%e6%a0%88%e7%9a%84%e5%8f%91%e5%b1%95%e5%8e%86%e7%a8%8b%e5%92%8c%e6%9c%aa%e6%9d%a5%e5%b1%95%e6%9c%9b","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51654\/","title":{"rendered":"\u63a2\u8ba8Linux\u534f\u8bae\u6808\u7684\u53d1\u5c55\u5386\u7a0b\u548c\u672a\u6765\u5c55\u671b"},"content":{"rendered":"

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

\u63a2\u8ba8Linux\u534f\u8bae\u6808\u7684\u53d1\u5c55\u5386\u7a0b\u548c\u672a\u6765\u5c55\u671b<\/h1>\n

\u968f\u7740\u4e92\u8054\u7f51\u7684\u5feb\u901f\u53d1\u5c55\uff0cLinux\u534f\u8bae\u6808\u4f5c\u4e3a\u7f51\u7edc\u57fa\u7840\u8bbe\u65bd\u4e2d\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u5176\u53d1\u5c55\u5907\u53d7\u5173\u6ce8\u3002\u672c\u6587\u5c06\u63a2\u8ba8Linux\u534f\u8bae\u6808\u7684\u6f14\u8fdb\u5386\u7a0b\uff0c\u4ece\u65e9\u671f\u7684\u7b80\u5355\u8bbe\u8ba1\u5230\u5f15\u5165\u5185\u6838\u7a7a\u95f4\u4e0e\u7528\u6237\u7a7a\u95f4\u5212\u5206\u3001\u591a\u6838\u5904\u7406\u4f18\u5316\u7b49\u6f14\u8fdb\u8fc7\u7a0b\u3002\u540c\u65f6\uff0c\u672c\u6587\u8fd8\u5c06\u5c55\u671bLinux\u534f\u8bae\u6808\u7684\u53d1\u5c55\u8d8b\u52bf\uff0c\u5305\u62ec\u57fa\u4e8eeBPF\u7684\u534f\u8bae\u6808\u4f18\u5316\u3001\u7f51\u7edc\u865a\u62df\u5316\u4e0e\u5bb9\u5668\u5316\u6280\u672f\u5e94\u7528\u3001\u57fa\u4e8eDPDK\u7684\u534f\u8bae\u6808\u4f18\u5316\u7b49\u3002<\/p>\n

Linux\u534f\u8bae\u6808\u7684\u6f14\u8fdb\u4e0e\u53d1\u5c55\u8d8b\u52bf\u63a2\u8ba8<\/p>\n

\u968f\u7740\u4e92\u8054\u7f51\u7684\u5feb\u901f\u53d1\u5c55\u4ee5\u53ca\u7269\u8054\u7f51\u30015G\u7b49\u65b0\u6280\u672f\u7684\u8fc5\u731b\u5d1b\u8d77\uff0c\u4f5c\u4e3a\u7f51\u7edc\u57fa\u7840\u8bbe\u65bd\u4e2d\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u534f\u8bae\u6808\u5728\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u4f5c\u7528\u53d8\u5f97\u8d8a\u53d1\u91cd\u8981\u3002\u800c\u5728\u4f17\u591a\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0cLinux\u4f5c\u4e3a\u4e00\u6b3e\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5176\u534f\u8bae\u6808\u7684\u53d1\u5c55\u4e5f\u5907\u53d7\u5173\u6ce8\u3002\u672c\u6587\u5c06\u63a2\u8ba8Linux\u534f\u8bae\u6808\u7684\u6f14\u8fdb\u4e0e\u53d1\u5c55\u8d8b\u52bf\uff0c\u5e76\u7ed3\u5408\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u8fdb\u884c\u5206\u6790\u3002<\/p>\n

\u4e00\u3001 Linux\u534f\u8bae\u6808\u7684\u6f14\u8fdb\u5386\u7a0b<\/p>\n

    \n
  1. \u539f\u6709\u7684\u534f\u8bae\u6808
    \u6700\u65e9\u671f\u7684Linux\u5185\u6838\u4e2d\uff0c\u534f\u8bae\u6808\u7684\u8bbe\u8ba1\u76f8\u5bf9\u7b80\u5355\uff0c\u4e3b\u8981\u5305\u62ec\u4f20\u8f93\u5c42\u548c\u7f51\u7edc\u5c42\uff0c\u652f\u6301\u57fa\u672c\u7684TCP\/IP\u534f\u8bae\u3002\u7ecf\u5386\u4e86\u4e0d\u65ad\u7684\u6539\u8fdb\u4e0e\u53d1\u5c55\uff0cLinux\u534f\u8bae\u6808\u9010\u6e10\u5b8c\u5584\uff0c\u540c\u65f6\u4e5f\u589e\u52a0\u4e86\u5bf9\u66f4\u591a\u534f\u8bae\u7684\u652f\u6301\u3002<\/li>\n
  2. \u5185\u6838\u7a7a\u95f4\u4e0e\u7528\u6237\u7a7a\u95f4\u7684\u5212\u5206
    \u968f\u7740\u64cd\u4f5c\u7cfb\u7edf\u7684\u53d1\u5c55\uff0cLinux\u4e5f\u5f15\u5165\u4e86\u5185\u6838\u7a7a\u95f4\u4e0e\u7528\u6237\u7a7a\u95f4\u7684\u5212\u5206\u673a\u5236\uff0c\u4f7f\u5f97\u7f51\u7edc\u534f\u8bae\u6808\u80fd\u591f\u66f4\u597d\u5730\u5728\u5185\u6838\u4e0e\u7528\u6237\u7a7a\u95f4\u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\u4e0e\u6570\u636e\u4ea4\u6362\u3002\u8fd9\u6837\u7684\u8bbe\u8ba1\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u5b89\u5168\u6027\uff0c\u540c\u65f6\u4e5f\u63d0\u9ad8\u4e86\u7f51\u7edc\u534f\u8bae\u6808\u7684\u5904\u7406\u6548\u7387\u3002<\/li>\n
  3. \u591a\u6838\u5904\u7406\u4e0e\u6027\u80fd\u4f18\u5316
    \u968f\u7740\u591a\u6838\u5904\u7406\u5668\u7684\u666e\u53ca\uff0cLinux\u534f\u8bae\u6808\u4e5f\u4e0d\u65ad\u8fdb\u884c\u4f18\u5316\uff0c\u4ee5\u9002\u5e94\u591a\u6838\u5904\u7406\u7684\u9700\u6c42\u3002Linux\u5185\u6838\u5728\u7f51\u7edc\u534f\u8bae\u6808\u7684\u8bbe\u8ba1\u4e0a\u5f15\u5165\u4e86\u591a\u7ebf\u7a0b\u6280\u672f\uff0c\u5145\u5206\u5229\u7528\u591a\u6838\u5904\u7406\u5668\u7684\u4f18\u52bf\uff0c\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/li>\n<\/ol>\n

    \u4e8c\u3001 Linux\u534f\u8bae\u6808\u7684\u53d1\u5c55\u8d8b\u52bf<\/p>\n

      \n
    1. \u57fa\u4e8eeBPF\u7684\u534f\u8bae\u6808\u4f18\u5316
      eBPF\u662f\u4e00\u79cd\u5728Linux\u5185\u6838\u4e2d\u8fd0\u884c\u7684\u4e00\u79cd\u865a\u62df\u673a\uff0c\u53ef\u4ee5\u63d0\u4f9b\u66f4\u52a0\u7075\u6d3b\u7684\u534f\u8bae\u6808\u6269\u5c55\u548c\u4f18\u5316\u3002\u901a\u8fc7\u4f7f\u7528eBPF\u6280\u672f\uff0c\u53ef\u4ee5\u66f4\u52a0\u65b9\u4fbf\u5730\u5bf9Linux\u534f\u8bae\u6808\u8fdb\u884c\u4f18\u5316\uff0c\u5b9e\u73b0\u66f4\u9ad8\u6548\u7684\u6570\u636e\u5305\u5904\u7406\u548c\u7f51\u7edc\u4f20\u8f93\u3002<\/li>\n<\/ol>\n

      \u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u901a\u8fc7eBPF\u6280\u672f\u4f18\u5316Linux\u534f\u8bae\u6808\u7684\u6570\u636e\u5305\u5904\u7406\uff1a<\/p>\n

      #include <linux\/bpf.h>\n#include <bpf_helpers.h>\n\nSEC(\"filter\")\nint handle_packet(struct __sk_buff *skb) {\n    \/\/ \u5bf9\u6570\u636e\u5305\u8fdb\u884c\u5904\u7406\n    \/\/ \u8fd4\u56deXDP_DROP\u6216XDP_PASS\n}<\/pre>\n
        \n
      1. \u7f51\u7edc\u865a\u62df\u5316\u4e0e\u5bb9\u5668\u5316\u6280\u672f
        \u968f\u7740\u4e91\u8ba1\u7b97\u6280\u672f\u7684\u53d1\u5c55\uff0c\u7f51\u7edc\u865a\u62df\u5316\u548c\u5bb9\u5668\u5316\u6280\u672f\u5728Linux\u534f\u8bae\u6808\u4e2d\u7684\u5e94\u7528\u4e5f\u8d8a\u6765\u8d8a\u5e7f\u6cdb\u3002\u901a\u8fc7\u4f7f\u7528\u865a\u62df\u5316\u6280\u672f\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u9694\u79bb\u7f51\u7edc\u6d41\u91cf\u548c\u4f18\u5316\u7f51\u7edc\u8d44\u6e90\u7684\u5229\u7528\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u7075\u6d3b\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/li>\n
      2. \u57fa\u4e8eDPDK\u7684\u534f\u8bae\u6808\u4f18\u5316
        DPDK\u662f\u4e00\u79cd\u6570\u636e\u5e73\u9762\u5f00\u53d1\u5de5\u5177\u5305\uff0c\u53ef\u4ee5\u63d0\u4f9b\u66f4\u9ad8\u6027\u80fd\u548c\u66f4\u4f4e\u5ef6\u8fdf\u7684\u6570\u636e\u5305\u5904\u7406\u3002\u5728Linux\u534f\u8bae\u6808\u7684\u53d1\u5c55\u4e2d\uff0c\u57fa\u4e8eDPDK\u7684\u4f18\u5316\u65b9\u6848\u4e5f\u5907\u53d7\u5173\u6ce8\uff0c\u901a\u8fc7\u5c06\u6570\u636e\u5305\u7684\u5904\u7406\u4ece\u5185\u6838\u79fb\u81f3\u7528\u6237\u7a7a\u95f4\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u63d0\u9ad8\u7cfb\u7edf\u7684\u7f51\u7edc\u6027\u80fd\u3002<\/li>\n<\/ol>\n
        \u901a\u8fc7\u4ee5\u4e0a\u7684\u63a2\u8ba8\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230Linux\u534f\u8bae\u6808\u5728\u4e0d\u65ad\u6f14\u8fdb\u4e0e\u53d1\u5c55\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4e0d\u65ad\u5f15\u5165\u65b0\u7684\u6280\u672f\uff0c\u5e76\u4e0d\u65ad\u8fdb\u884c\u4f18\u5316\uff0c\u4ee5\u9002\u5e94\u65e5\u76ca\u590d\u6742\u7684\u7f51\u7edc\u73af\u5883\u3002\u672a\u6765\uff0c\u968f\u7740\u65b0\u6280\u672f\u7684\u4e0d\u65ad\u6d8c\u73b0\uff0c\u6211\u4eec\u53ef\u4ee5\u671f\u5f85Linux\u534f\u8bae\u6808\u5728\u7f51\u7edc\u9886\u57df\u53d1\u6325\u66f4\u52a0\u91cd\u8981\u7684\u4f5c\u7528\u3002<\/p>\n
        \u5e0c\u671b\u901a\u8fc7\u672c\u6587\u7684\u63a2\u8ba8\uff0c\u8bfb\u8005\u80fd\u591f\u66f4\u52a0\u6df1\u5165\u5730\u4e86\u89e3Linux\u534f\u8bae\u6808\u7684\u6f14\u8fdb\u4e0e\u53d1\u5c55\u8d8b\u52bf\uff0c\u4ee5\u53ca\u5176\u4e2d\u6d89\u53ca\u7684\u5177\u4f53\u6280\u672f\u4e0e\u4ee3\u7801\u793a\u4f8b\uff0c\u4ece\u800c\u66f4\u597d\u5730\u638c\u63e1Linux\u7f51\u7edc\u7f16\u7a0b\u76f8\u5173\u77e5\u8bc6\u3002<\/p>\n
        \u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u63a2\u8ba8Linux\u534f\u8bae\u6808\u7684\u53d1\u5c55\u5386\u7a0b\u548c\u672a\u6765\u5c55\u671b\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n
        \n
        <\/dt>\n
        \n   \u7edf\u8ba1\u7b26\u5408\u5728 Mgo \u4e2d\u67e5\u8be2\u6761\u4ef6\u7684\u6587\u6863\u6570\u91cf\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
        \u63a2\u8ba8Linux\u534f\u8bae\u6808\u7684\u53d1\u5c55\u5386\u7a0b\u548c\u672a\u6765\u5c55\u671b \u968f\u7740\u4e92\u8054\u7f51\u7684\u5feb\u901f\u53d1\u5c55\uff0cLinux\u534f\u8bae\u6808\u4f5c\u4e3a\u7f51\u7edc\u57fa\u7840\u8bbe\u65bd\u4e2d\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u5176\u53d1\u5c55\u5907\u53d7\u5173\u6ce8\u3002\u672c\u6587\u5c06\u63a2\u8ba8Linux\u534f\u8bae\u6808\u7684\u6f14\u8fdb\u5386\u7a0b\uff0c\u4ece\u65e9\u671f\u7684\u7b80\u5355\u8bbe\u8ba1\u5230\u5f15\u5165\u5185\u6838\u7a7a\u95f4\u4e0e\u7528\u6237\u7a7a\u95f4\u5212\u5206\u3001\u591a\u6838\u5904\u7406\u4f18\u5316\u7b49\u6f14\u8fdb\u8fc7\u7a0b\u3002\u540c\u65f6\uff0c\u672c\u6587\u8fd8\u5c06\u5c55\u671bLinux\u534f\u8bae\u6808\u7684\u53d1\u5c55\u8d8b\u52bf\uff0c\u5305\u62ec\u57fa\u4e8eeBPF\u7684\u534f\u8bae\u6808\u4f18\u5316\u3001\u7f51\u7edc\u865a\u62df\u5316\u4e0e\u5bb9\u5668\u5316\u6280\u672f\u5e94\u7528\u3001\u57fa\u4e8eDPDK\u7684\u534f\u8bae\u6808\u4f18\u5316\u7b49\u3002 Linux\u534f\u8bae\u6808\u7684\u6f14\u8fdb\u4e0e\u53d1\u5c55\u8d8b\u52bf\u63a2\u8ba8 \u968f\u7740\u4e92\u8054\u7f51\u7684\u5feb\u901f\u53d1\u5c55\u4ee5\u53ca\u7269\u8054\u7f51\u30015G\u7b49\u65b0\u6280\u672f\u7684\u8fc5\u731b\u5d1b\u8d77\uff0c\u4f5c\u4e3a\u7f51\u7edc\u57fa\u7840\u8bbe\u65bd\u4e2d\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u534f\u8bae\u6808\u5728\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u4f5c\u7528\u53d8\u5f97\u8d8a\u53d1\u91cd\u8981\u3002\u800c\u5728\u4f17\u591a\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0cLinux\u4f5c\u4e3a\u4e00\u6b3e\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5176\u534f\u8bae\u6808\u7684\u53d1\u5c55\u4e5f\u5907\u53d7\u5173\u6ce8\u3002\u672c\u6587\u5c06\u63a2\u8ba8Linux\u534f\u8bae\u6808\u7684\u6f14\u8fdb\u4e0e\u53d1\u5c55\u8d8b\u52bf\uff0c\u5e76\u7ed3\u5408\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u8fdb\u884c\u5206\u6790\u3002 \u4e00\u3001 Linux\u534f\u8bae\u6808\u7684\u6f14\u8fdb\u5386\u7a0b \u539f\u6709\u7684\u534f\u8bae\u6808\u6700\u65e9\u671f\u7684Linux\u5185\u6838\u4e2d\uff0c\u534f\u8bae\u6808\u7684\u8bbe\u8ba1\u76f8\u5bf9\u7b80\u5355\uff0c\u4e3b\u8981\u5305\u62ec\u4f20\u8f93\u5c42\u548c\u7f51\u7edc\u5c42\uff0c\u652f\u6301\u57fa\u672c\u7684TCP\/IP\u534f\u8bae\u3002\u7ecf\u5386\u4e86\u4e0d\u65ad\u7684\u6539\u8fdb\u4e0e\u53d1\u5c55\uff0cLinux\u534f\u8bae\u6808\u9010\u6e10\u5b8c\u5584\uff0c\u540c\u65f6\u4e5f\u589e\u52a0\u4e86\u5bf9\u66f4\u591a\u534f\u8bae\u7684\u652f\u6301\u3002 \u5185\u6838\u7a7a\u95f4\u4e0e\u7528\u6237\u7a7a\u95f4\u7684\u5212\u5206\u968f\u7740\u64cd\u4f5c\u7cfb\u7edf\u7684\u53d1\u5c55\uff0cLinux\u4e5f\u5f15\u5165\u4e86\u5185\u6838\u7a7a\u95f4\u4e0e\u7528\u6237\u7a7a\u95f4\u7684\u5212\u5206\u673a\u5236\uff0c\u4f7f\u5f97\u7f51\u7edc\u534f\u8bae\u6808\u80fd\u591f\u66f4\u597d\u5730\u5728\u5185\u6838\u4e0e\u7528\u6237\u7a7a\u95f4\u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\u4e0e\u6570\u636e\u4ea4\u6362\u3002\u8fd9\u6837\u7684\u8bbe\u8ba1\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u5b89\u5168\u6027\uff0c\u540c\u65f6\u4e5f\u63d0\u9ad8\u4e86\u7f51\u7edc\u534f\u8bae\u6808\u7684\u5904\u7406\u6548\u7387\u3002 \u591a\u6838\u5904\u7406\u4e0e\u6027\u80fd\u4f18\u5316\u968f\u7740\u591a\u6838\u5904\u7406\u5668\u7684\u666e\u53ca\uff0cLinux\u534f\u8bae\u6808\u4e5f\u4e0d\u65ad\u8fdb\u884c\u4f18\u5316\uff0c\u4ee5\u9002\u5e94\u591a\u6838\u5904\u7406\u7684\u9700\u6c42\u3002Linux\u5185\u6838\u5728\u7f51\u7edc\u534f\u8bae\u6808\u7684\u8bbe\u8ba1\u4e0a\u5f15\u5165\u4e86\u591a\u7ebf\u7a0b\u6280\u672f\uff0c\u5145\u5206\u5229\u7528\u591a\u6838\u5904\u7406\u5668\u7684\u4f18\u52bf\uff0c\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u6027\u80fd\u3002 \u4e8c\u3001 Linux\u534f\u8bae\u6808\u7684\u53d1\u5c55\u8d8b\u52bf \u57fa\u4e8eeBPF\u7684\u534f\u8bae\u6808\u4f18\u5316eBPF\u662f\u4e00\u79cd\u5728Linux\u5185\u6838\u4e2d\u8fd0\u884c\u7684\u4e00\u79cd\u865a\u62df\u673a\uff0c\u53ef\u4ee5\u63d0\u4f9b\u66f4\u52a0\u7075\u6d3b\u7684\u534f\u8bae\u6808\u6269\u5c55\u548c\u4f18\u5316\u3002\u901a\u8fc7\u4f7f\u7528eBPF\u6280\u672f\uff0c\u53ef\u4ee5\u66f4\u52a0\u65b9\u4fbf\u5730\u5bf9Linux\u534f\u8bae\u6808\u8fdb\u884c\u4f18\u5316\uff0c\u5b9e\u73b0\u66f4\u9ad8\u6548\u7684\u6570\u636e\u5305\u5904\u7406\u548c\u7f51\u7edc\u4f20\u8f93\u3002 \u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u901a\u8fc7eBPF\u6280\u672f\u4f18\u5316Linux\u534f\u8bae\u6808\u7684\u6570\u636e\u5305\u5904\u7406\uff1a #include <linux\/bpf.h> #include <bpf_helpers.h> SEC(“filter”) int handle_packet(struct __sk_buff *skb) { \/\/ \u5bf9\u6570\u636e\u5305\u8fdb\u884c\u5904\u7406 \/\/ \u8fd4\u56deXDP_DROP\u6216XDP_PASS } 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