{"id":189,"date":"2022-04-17T21:23:31","date_gmt":"2022-04-17T13:23:31","guid":{"rendered":"https:\/\/lovelyping.com\/?p=189"},"modified":"2022-04-17T22:47:11","modified_gmt":"2022-04-17T14:47:11","slug":"f-stack%e5%8f%91%e9%80%81%e9%9b%b6%e6%8b%b7%e8%b4%9d%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/lovelyping.com\/?p=189","title":{"rendered":"F-Stack\u53d1\u9001\u96f6\u62f7\u8d1d\u4ecb\u7ecd"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u6570\u636e\u5305\u5728\u670d\u52a1\u5668\u7684\u5904\u7406\u5206\u63a5\u6536\u548c\u53d1\u9001\u4e24\u4e2a\u65b9\u5411\uff0c\u6536\u5305\u65b9\u5411\u56e0\u4e3a\u6211\u4eec\u81ea\u5df1\u672c\u8eab\u7684\u4e1a\u52a1\u573a\u666f\u6d89\u53ca\u6536\u5305\u6570\u636e\u5f88\u5c11\uff0c\u540e\u7eed\u53e6\u884c\u4ecb\u7ecd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6587\u4e3b\u8981\u4ecb\u7ecdF-Stack\u53d1\u5305\u65b9\u5411\u4e0a\u5f53\u524d\u7684\u96f6\u62f7\u8d1d\u5904\u7406\u65b9\u6848\u3001\u6548\u679c\u548c\u5e94\u7528\u573a\u666f\u7684\u9009\u62e9\uff0c\u53d1\u5305\u65b9\u5411\u4e0a\u7684\u6570\u636e\u62f7\u8d1d\u76ee\u524d\u4e3b\u8981\u4e3a\u4e24\u4e2a\u9636\u6bb5\uff0c\u4e00\u662f\u534f\u8bae\u6808\u6570\u636e\u62f7\u8d1d\u5230DPDK\u7684<code>rte_mbuf<\/code>\u4e2d\uff0c\u4e8c\u662f\u5e94\u7528\u5c42\u8c03\u7528socket\u53d1\u9001\u63a5\u53e3\u65f6\u4f1a\u5c06\u6570\u636e\u4ece\u5e94\u7528\u5c42\u62f7\u8d1d\u5230FreeBSD\u534f\u8bae\u6808\uff0c\u4e0b\u9762\u5c06\u5206\u522b\u8fdb\u884c\u4ecb\u7ecd\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u534f\u8bae\u6808\u5230DPDK<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8be5\u8fc7\u7a0b\u7684\u96f6\u62f7\u8d1d\u5b9e\u73b0\u7531 <a href=\"https:\/\/github.com\/jinhao2\">@jinhao2<\/a> \u63d0\u4ea4\u7684<a href=\"https:\/\/github.com\/F-Stack\/f-stack\/pull\/634\">Pull Request #364<\/a> \u5408\u5e76\u5230F-Stack\u4e3b\u7ebf\u4e2d\uff0c\u76f8\u5173\u5b9e\u73b0\u7ec6\u8282\u53ef\u4ee5\u53c2\u8003\u76f8\u5173\u4ee3\u7801\uff0c\u8fd9\u91cc\u4ec5\u5bf9\u5b9e\u73b0\u65b9\u6848\u8fdb\u884c\u7b80\u8981\u4ecb\u7ecd\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6848\u4ecb\u7ecd<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>\u8fdb\u7a0b\u521d\u59cb\u5316\u65f6\uff0c\u901a\u8fc7mmap \u4e3a BSD \u5806\u6808\u5206\u914d\u6307\u5b9a\u5927\u5c0f\u7684\u5185\u5b58\uff08\u76ee\u524d\u9ed8\u8ba4256M\uff09\uff0c\u53ef\u4ee5\u901a\u8fc7\u5728<code>config.ini<\/code>\u4e2d\u901a\u8fc7\u53c2\u6570<code>memsz_MB<\/code>\u4fee\u6539\u9ed8\u8ba4\u914d\u7f6e\u3002<\/li><li>\u901a\u8fc7 mlock() \u56fa\u5b9a\u7269\u7406\u5185\u5b58\uff0c\u9632\u6b62\u88ab\u6362\u51fa\u5230\u4ea4\u6362\u5206\u533a\u9020\u6210\u5185\u5b58\u865a\u62df\u5730\u5740\u548c\u7269\u7406\u5730\u5740\u5bf9\u5e94\u5173\u7cfb\u7684\u53d8\u5316\u3002<\/li><li>\u8ba1\u7b97\u6bcf\u4e2a\u9875\u9762\u7684\u8d77\u59cb\u5730\u5740\u5e76\u4fdd\u5b58\uff0c\u5305\u62ec\u865a\u62df\u5730\u5740\u548c\u7269\u7406\u5730\u5740\uff0c\u7269\u7406\u5730\u5740\u7684\u8ba1\u7b97\u53ef\u4ee5\u901a\u8fc7DPDK\u7684\u63d0\u4f9b\u7684\u76f8\u5173\u63a5\u53e3\u8fdb\u884c\u3002<\/li><li>\u521d\u59cb\u5316\u4e00\u4e2a\u5806\u6808\u7ed3\u6784\u6765\u7ba1\u7406\u6240\u6709\u5206\u914d\u7684\u9875\u9762\u3002<\/li><li>\u901a\u8fc7\u4ece\u5df2\u7ecf\u521d\u59cb\u5316\u7684\u5806\u6808\u7ed3\u6784\u4e2d\u83b7\u53d6\/\u91ca\u653e\u4e00\u9875\u6765\u66ff\u6362 <code>ff_mmap()\/ff_munmap()<\/code>\u7684\u5b9e\u9645mmap\u884c\u4e3a\uff0c\u800cBSD\u534f\u8bae\u6808\u8c03\u7528<code>kmem_malloc()\/kmem_free()<\/code>\u65f6\u8c03\u7528<code>ff_mmap()\/ff_munmap()<\/code>\u6765\u83b7\u53d6\u5185\u5b58\u9875\u3002<\/li><li>\u5728\u5c06BSD\u534f\u8bae\u6808<code>mbuf<\/code>\u7684\u6570\u636e\u5730\u5740\u8d4b\u503c\u7ed9DPDK\u7684<code>rte_mbuf<\/code>\u65f6\u7528\u4e8e\u5224\u65ad\u662f\u5426\u4e3a\u521d\u59cb\u5316\u7533\u8bf7\u7684\u5185\u5b58\u6c60\u4e2d\u7684\u5730\u5740\uff0c\u5e76\u901a\u8fc7\u865a\u62df\u5730\u5740\u67e5\u627e\u5bf9\u5e94\u7684\u7269\u7406\u5730\u5740\uff0c\u5206\u522b\u8d4b\u503c\u7ed9<code>rte_buf<\/code>\u7ed3\u6784\u7684<code>buf_addr\/buf_physaddr<\/code>\uff0c\u800c\u4e0d\u518d\u5b9e\u9645\u8fdb\u884c\u5185\u5b58\u62f7\u8d1d\u3002<\/li><li>\u4f7f\u7528\u4e00\u4e2a\u5faa\u73af\u961f\u5217\u4fdd\u5b58\u53d1\u9001\u7684<code>mbuf<\/code>\u7684\u6307\u9488\uff0c<strong>\u961f\u5217\u7684\u957f\u5ea6\u5e94\u8be5\u4e0eNIC\u7684<code>tx_queue_length<\/code>\u76f8\u540c<\/strong>\u3002\u5728\u961f\u5217\u4e2d\u7684\u4e00\u9879\u88ab\u63a8\u5165\u65b0\u503c\u4e4b\u524d\uff0c\u65e7\u7684 <code>mbuf<\/code> \u5fc5\u987b\u7531 NIC \u5904\u7406\u5e76\u4e14\u53ef\u4ee5\u5b89\u5168\u5730\u91ca\u653e\u3002<\/li><li>\u5982\u679c<code>mbuf<\/code>\u662f<code>ext_cluster<\/code>\u7c7b\u578b\uff0c\u5176\u4e2d\u5305\u62ec\u4e00\u4e2a<code>rte_mbuf<\/code>\uff0c\u8868\u793a\u662f\u6536\u5305\u65f6\u96f6\u62f7\u8d1d\u9644\u52a0\u7684\u6570\u636e\u5730\u5740\uff0c\u5219\u4f7f\u7528 <code>rte_pktmbuf_clone()<\/code>\u4ee3\u66ff\u3002<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f7f\u7528\u65b9\u5f0f\u53ca\u6ce8\u610f\u4e8b\u9879<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f7f\u7528\u65b9\u5f0f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u8be5\u529f\u80fd\u9ed8\u8ba4\u5e76\u672a\u5f00\u542f\uff0c\u9700\u8981\u901a\u8fc7\u5728<code>lib\/Makefile<\/code>\u4e2d\u6253\u5f00\u7f16\u8bd1\u9009\u9879<code>FF_USE_PAGE_ARRAY<\/code>\uff0c\u5e76\u91cd\u65b0\u7f16\u8bd1F-Stack lib \u5e93\u548c\u5e94\u7528\u7a0b\u5e8f\u540e\u624d\u80fd\u751f\u6548\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5176\u4ed6\u5e94\u7528\u7f16\u7a0b\u53ca\u4f7f\u7528\u65b9\u5f0f\u4e0e\u5e38\u89c4\u62f7\u8d1d\u6a21\u5f0f\u6ca1\u6709\u533a\u522b\uff0c\u5bf9\u5e94\u7528\u5c42\u900f\u660e\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6ce8\u610f\u4e8b\u9879<\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5185\u5b58\u6c60\u521d\u59cb\u5316\u65f6\u5728\u672c\u8fdb\u7a0b\u901a\u8fc7<code>mmap<\/code>\u548c<code>mlock<\/code>\u7533\u8bf7\uff0c\u4e3a\u8fdb\u7a0b\u79c1\u6709\u5730\u5740\u7a7a\u95f4\uff0c\u76f8\u5173\u5185\u5b58<strong>\u4e0d\u80fd\u4f20\u9012\u5230\u5176\u4ed6\u8fdb\u7a0b<\/strong>\u4f7f\u7528\u3002<ul><li>\u53ef\u4ee5\u8003\u8651\u5728\u521d\u59cb\u5316\u65f6\u6620\u5c04\u5927\u9875\u5185\u5b58\u6216\u8005\u4f7f\u7528\u5171\u4eab\u5185\u5b58\uff08\u540c\u6837\u9700\u8981<code>SHM_LOCk<\/code>\u6216<code>mlock<\/code>\u9501\u5b9a\u5185\u5b58\uff0c\u9632\u6b62\u4ea4\u6362\uff09\u6765\u8fbe\u5230\u53ef\u4ee5\u8de8\u8fdb\u7a0b\u4f7f\u7528\u7684\u76ee\u7684\uff0c\u4f46\u662f\u5bf9\u5e94\u7684\u5730\u5740\u4fdd\u5b58\u548c\u67e5\u627e\u7ed3\u6784\u4e5f\u9700\u8981\u8fdb\u884c\u53d8\u66f4\uff0c\u4e00\u822c\u5e94\u7528\u5efa\u8bae\u907f\u514d\u8de8\u8fdb\u7a0b\u4f7f\u7528\u5373\u53ef\uff0c\u4e0d\u5efa\u8bae\u8fdb\u884c\u4fee\u6539\u3002<\/li><\/ul><\/li><li>\u534f\u8bae\u6808\u5230DPDK\u7684\u96f6\u62f7\u8d1d\u529f\u80fd\u53ef\u4ee5\u5355\u72ec\u5f00\u542f<code>FF_USE_PAGE_ARRAY<\/code>\u4f7f\u7528\uff0c\u4e5f\u53ef\u4ee5\u4e0e\u96f6\u62f7\u8d1d\u53d1\u9001\u63a5\u53e3<code>FF_ZC_SEND<\/code>\u4e00\u8d77\u5f00\u542f\u4f7f\u7528\u3002<\/li><li>\u6b64\u5904\u51cf\u5c11\u7684\u5185\u5b58\u62f7\u8d1d\u662f\u5426\u5bf9\u5e94\u7528\u6027\u80fd\u6709\u63d0\u5347\u8fd8\u9700\u8981\u7ed3\u5408\u5177\u4f53\u7684\u5e94\u7528\u8fdb\u884c\u5b9e\u9645\u6d4b\u8bd5\uff0c\u6570\u636e\u5305\u5728\u4e00\u5b9a\u5927\u5c0f\u4e14\u4f7f\u7528\u65b9\u5f0f\u5408\u9002\u65f6\u5219\u53ef\u4ee5\u6709\u4e00\u5b9a\u7684\u6027\u80fd\u4f18\u5316\u6548\u679c\uff0c\u4f46\u4f18\u5316\u6548\u679c\u5e76\u4e0d\u4e00\u5b9a\u5f88\u660e\u663e\uff0c\u6bd4\u5982\u53ea\u67092-3%\u5de6\u53f3\u7684\u63d0\u5347\u3002<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e94\u7528\u5c42\u5230\u534f\u8bae\u6808<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7\u63d0\u4f9b\u5355\u72ec\u7684\u96f6\u62f7\u8d1dAPI\uff0c\u4f7f\u5e94\u7528\u5c42\u5728\u901a\u8fc7socket\u63a5\u53e3\u53d1\u9001\u6570\u636e\u65f6\uff0c\u907f\u514d\u5e94\u7528\u5c42\u5230BSD\u534f\u8bae\u6808\u7684\u6570\u636e\u62f7\u8d1d\uff0c\u5177\u4f53\u7ec6\u8282\u89c1<a href=\"https:\/\/github.com\/F-Stack\/f-stack\/commit\/e12886c02c1699e09350a301b13fe46a4efb5bea\">\u63d0\u4ea4e12886c<\/a>\uff0c\u4e0b\u9762\u5c06\u8fdb\u884c\u8f83\u4e3a\u5177\u4f53\u7684\u4ecb\u7ecd\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6848\u4ecb\u7ecd<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>\u63d0\u4f9b\u5355\u72ec\u7684\u96f6\u62f7\u8d1d\u7ed3\u6784\u4f53<code>ff_zc_mbuf<\/code>\uff0c\u7528\u4e8e\u5e94\u7528\u5c42\u7f13\u5b58\u7ed3\u6784\uff0c\u540e\u7eed\u5e94\u7528\u5c42\u7684\u6570\u636e\u64cd\u4f5c\u548c\u53d1\u9001\u90fd\u5e94\u8be5\u4f7f\u7528\u8be5\u7ed3\u6784\u4f53\uff0c\u5177\u4f53\u7c7b\u578b\u5982\u4e0b\u6240\u793a\uff1astruct ff_zc_mbuf {<br> \u00a0  void *bsd_mbuf; \u00a0 \u00a0 \u00a0 \u00a0 \/* \u6307\u5411BSD mbuf\u94fe\u7684\u5934\u8282\u70b9 *\/<br> \u00a0  void *bsd_mbuf_off; \u00a0 \u00a0 \/* \u6307\u5411BSD mbuf\u94fe\u4e2d\u504f\u79fboff\u540e\u7684\u5f53\u524d\u8282\u70b9 *\/<br> \u00a0  int off; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0  \/* mbuf\u94fe\u4e2d\u7684\u504f\u79fb\u91cf\uff0c\u5e94\u7528\u5c42\u4e0d\u5e94\u8be5\u76f4\u63a5\u4fee\u6539 *\/<br> \u00a0  int len; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0  \/* \u7533\u8bf7\u7684mbuf\u94fe\u7f13\u5b58\u7684\u603b\u957f\u5ea6\uff0c\u5c0f\u4e8e\u7b49\u4e8embuf\u94fe\u5b9e\u9645\u80fd\u627f\u8f7d\u7684\u6570\u636e\u957f\u5ea6 *\/<br>};<\/li><li>\u63d0\u4f9b\u63a5\u53e3<code>ff_zc_mbuf_get()<\/code>\uff0c\u7528\u4e8e\u5e94\u7528\u63d0\u524d\u7533\u8bf7\u5305\u542b\u53ef\u4ee5\u7531\u5185\u6838\u76f4\u63a5\u4f7f\u7528\u7684<code>mbuf<\/code>\u7684\u7ed3\u6784\u4f53\u4f5c\u4e3a\u5e94\u7528\u5c42\u6570\u636e\u7f13\u5b58\uff0c\u63a5\u53e3\u58f0\u660e\u5982\u4e0b\u3002int ff_zc_mbuf_get(struct ff_zc_mbuf *m, int len);\u8be5\u63a5\u53e3\u8f93\u5165<code>struct ff_zc_mbuf *<\/code>\u6307\u9488\u548c\u9700\u8981\u7533\u8bf7\u7684\u7f13\u5b58\u603b\u957f\u5ea6\uff0c\u5185\u90e8\u5c06\u901a\u8fc7<code>m_getm2()<\/code>\u5206\u914d<code>mbuf<\/code>\u94fe\uff0c\u9996\u5730\u5740\u4fdd\u5b58\u5728<code>ff_zc_mbuf<\/code>\u7ed3\u6784\u7684<code>bsd_mbuf<\/code>\u53d8\u91cf\u4e2d\uff0c\u540e\u7eed\u53ef\u4ee5\u4f20\u9012\u7ed9<code>ff_write()<\/code>\u63a5\u53e3\u3002\u5176\u4e2d<code>m_getm2()<\/code>\u4e3a\u6807\u51c6socket\u63a5\u53e3\u62f7\u8d1d\u5e94\u7528\u5c42\u6570\u636e\u5230\u534f\u8bae\u6808\u65f6\u5206\u914d<code>mbuf<\/code>\u94fe\u7684\u63a5\u53e3\uff0c\u6240\u4ee5\u4f7f\u7528\u8be5\u63a5\u53e3\u8303\u56f4\u7684<code>mbuf<\/code>\u94fe\u4f5c\u4e3a\u5e94\u7528\u5c42\u7f13\u5b58\uff0c\u53ef\u4ee5\u5728\u53d1\u9001\u6570\u636e\u65f6\u5b8c\u5168\u517c\u5bb9\u3002<\/li><li>\u63d0\u4f9b\u4e86\u7f13\u5b58\u6570\u636e\u5199\u5165\u51fd\u6570<code>ff_zc_mbuf_write()<\/code>\uff0c\u51fd\u6570\u58f0\u660e\u5982\u4e0b\uff0c<\/li><li>int ff_zc_mbuf_write(struct ff_zc_mbuf *m, const char *data, int len); \u5e94\u7528\u5c42\u5728\u4fdd\u5b58\u5f85\u53d1\u9001\u7684\u6570\u636e\u65f6\uff0c\u5e94\u901a\u8fc7\u63a5\u53e3<code>ff_zc_mbuf_wirte()<\/code>\u76f4\u63a5\u5c06\u6570\u636e\u5199\u5230<code>ff_zc_mbuf<\/code>\u6307\u5411\u7684<code>mbuf<\/code>\u94fe\u7684\u7f13\u5b58\u4e2d\uff0c<code>ff_zc_mbuf_wirte()<\/code>\u63a5\u53e3<strong>\u53ef\u4ee5\u591a\u6b21\u8c03\u7528\u5199\u5165\u7f13\u5b58\u6570\u636e<\/strong>\uff0c\u63a5\u53e3\u5185\u90e8\u81ea\u52a8\u5904\u7406\u7f13\u5b58\u7684\u504f\u79fb\u60c5\u51b5\uff0c\u4f46\u591a\u6b21<strong>\u603b\u7684\u5199\u5165\u957f\u5ea6\u4e0d\u80fd\u8d85\u8fc7\u521d\u59cb\u7533\u8bf7\u7684\u7f13\u5b58\u957f\u5ea6<\/strong>\u3002<\/li><li>\u5e94\u7528\u8c03\u7528<code>ff_write()<\/code>\u63a5\u53e3\u65f6\u6307\u5b9a\u4f20\u9012<code>ff_zc_mubf.bsd_mbuf<\/code>\u4e3a<code>buf<\/code>\u53c2\u6570\uff0c\u793a\u4f8b\u5982\u4e0b\u6240\u793a\uff0cff_write(clientfd, zc_buf.bsd_mbuf, buf_len);\u5728<code>m_uiotombuf()<\/code>\u51fd\u6570\u4e2d\uff0c\u76f4\u63a5\u4f7f\u7528\u4f20\u9012\u7684<code>mbuf<\/code>\u94fe\u7684\u9996\u5730\u5740\uff0c\u4e0d\u518d\u989d\u5916\u8fdb\u884c<code>mbuf<\/code>\u94fe\u7684\u5206\u914d\u548c\u6570\u636e\u62f7\u8d1d\uff0c\u5982\u4e0b\u6240\u793a,#ifdef FSTACK_ZC_SEND<br>    if (uio->uio_segflg == UIO_SYSSPACE &amp;&amp; uio->uio_rw == UIO_WRITE) {<br>        m = (struct mbuf *)uio->uio_iov->iov_base;  \/* \u76f4\u63a5\u4f7f\u7528\u5e94\u7528\u5c42\u7684mbuf\u94fe\u9996\u5730\u5740 *\/<br>        uio->uio_iov->iov_base = (char *)(uio->uio_iov->iov_base) + total;<br>        uio->uio_iov->iov_len = 0;<br>        uio->uio_resid = 0;<br>        uio->uio_offset = total;<br>        progress = total;<br>    } else {<br>#endif<br>    m = m_getm2(NULL, max(total + align, 1), how, MT_DATA, flags); \/* \u62f7\u8d1d\u6a21\u5f0f\u5206\u914dmbuf\u94fe*\/<br>    if (m == NULL)<br>        return (NULL);<br>    m->m_data += align;<br>\u200b<br>    \/* Fill all mbufs with uio data and update header information. *\/<br>    for (mb = m; mb != NULL; mb = mb->m_next) {<br>        length = min(M_TRAILINGSPACE(mb), total &#8211; progress);<br>\u200b<br>        error = uiomove(mtod(mb, void *), length, uio); \/* \u62f7\u8d1d\u6a21\u5f0f\u62f7\u8d1d\u5e94\u7528\u5c42\u6570\u636e\u5230\u534f\u8bae\u6808 *\/<br>        if (error) {<br>            m_freem(m);<br>            return (NULL);<br>        }<br>\u200b<br>        mb->m_len = length;<br>        progress += length;<br>        if (flags &amp; M_PKTHDR)<br>            m->m_pkthdr.len += length;<br>    }<br>#ifdef FSTACK_ZC_SEND<br>    }<br>#endif<\/li><li>\u5728<code>ff_write()<\/code>\u51fd\u6570\u6210\u529f\u8fd4\u56de\u540e\uff0c\u4e4b\u524d\u7533\u8bf7\u7684<code>ff_zc_mbuf<\/code>\u7ed3\u6784<strong>\u5185\u90e8<code>mbuf<\/code>\u94fe\u6570\u636e\u4e0d\u9700\u8981\u91ca\u653e<\/strong>\uff0c\u8be5\u7ed3\u6784\u53ef\u4ee5\u5728\u51fd\u6570<code>ff_zc_mbuf_get()<\/code>\u4e2d\u590d\u7528<strong>\u91cd\u65b0\u5206\u914dBSD\u7684<code>mbuf<\/code>\u94fe<\/strong>\u3002<ul><li><strong>\u4e0d\u80fd\u591f\u518d\u6b21\u76f4\u63a5\u5728<code>ff_zc_mbuf_wirte()<\/code>\u4f7f\u7528\uff0c\u5fc5\u987b\u91cd\u65b0\u8c03\u7528<code>ff_zc_mbuf_get()<\/code>\u5206\u914d\u65b0\u7684<code>mbuf<\/code>\u94fe\u4e4b\u540e\u624d\u53ef\u4ee5\u7ee7\u7eed\u4f7f\u7528<\/strong><\/li><\/ul><\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f7f\u7528\u65b9\u5f0f\u53ca\u6ce8\u610f\u4e8b\u9879<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f7f\u7528\u65b9\u5f0f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u8be5\u529f\u80fd\u9ed8\u8ba4\u5e76\u672a\u5f00\u542f\uff0c\u9700\u8981\u901a\u8fc7\u5728<code>lib\/Makefile<\/code>\u4e2d\u6253\u5f00\u7f16\u8bd1\u9009\u9879<code>FF_ZC_SEND<\/code>\uff0c\u5e76\u91cd\u65b0\u7f16\u8bd1F-Stack lib \u5e93\u548c\u5e94\u7528\u7a0b\u5e8f\u540e\u624d\u80fd\u751f\u6548\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u96f6\u62f7\u8d1d\u53d1\u9001\u63a5\u53e3\u7684\u4f7f\u7528\u65b9\u5f0f\u4e0e\u6807\u51c6socket\u63a5\u53e3\u4e5f\u6709\u533a\u522b\uff0c\u5177\u4f53\u53ef\u4ee5\u53c2\u8003\u524d\u9762\u7684\u65b9\u6848\u4ecb\u7ecd\u53ca<a href=\"https:\/\/github.com\/F-Stack\/f-stack\/blob\/master\/example\/main_zc.c\">\u793a\u4f8b\u4ee3\u7801<\/a>\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6ce8\u610f\u4e8b\u9879<\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>\u4f7f\u7528\u96f6\u62f7\u8d1d\u53d1\u9001\u63a5\u53e3\u9700\u8981\u5bf9\u539f\u6709\u5e94\u7528\u8fdb\u884c\u4fee\u6539\u624d\u80fd\u63a5\u5165\uff0c\u4e14\u5e76\u4e0d\u4e00\u5b9a\u6709\u5f88\u660e\u663e\u7684\u6027\u80fd\u63d0\u5347\uff0c\u6240\u4ee5\u9ed8\u8ba4\u4e0d\u5f00\u542f\u3002<\/li><li>\u96f6\u62f7\u8d1d\u53d1\u9001\u63a5\u53e3\u53ef\u4ee5\u5355\u72ec\u5f00\u542f<code>FF_ZC_SEND<\/code>\u4f7f\u7528\uff0c\u4e5f\u53ef\u4ee5\u4e0e<code>FF_USE_PAGE_ARRAY<\/code>\u4e00\u8d77\u5f00\u542f\u4f7f\u7528\u3002<\/li><li>\u4e0e\u534f\u8bae\u6808\u5230DPDK\u7684\u96f6\u62f7\u8d1d\u7c7b\u4f3c\uff0c\u6b64\u5904\u51cf\u5c11\u7684\u5185\u5b58\u62f7\u8d1d\u662f\u5426\u5bf9\u5e94\u7528\u6027\u80fd\u6709\u63d0\u5347\u8fd8\u9700\u8981\u7ed3\u5408\u5177\u4f53\u7684\u5e94\u7528\u8fdb\u884c\u5b9e\u9645\u6d4b\u8bd5\uff0c\u5728\u7279\u5b9a\u5e94\u7528\u573a\u666f\u4e0b\u624d\u4f1a\u6709\u4e00\u5b9a\u7684\u6027\u80fd\u63d0\u5347\uff0c\u4f46\u6548\u679c\u5e76\u4e0d\u4e00\u5b9a\u5f88\u660e\u663e\uff0c\u6bd4\u5982\u53ea\u67092-3%\u5de6\u53f3\u7684\u63d0\u5347\u3002<\/li><li>\u76ee\u524d<code>struct ff_zc_mbuf *<\/code>\u7684\u7ed3\u6784\u662f\u5bf9\u5916\u66b4\u9732\u7ed9\u5e94\u7528\u5c42\u7684\uff0c\u53ef\u4ee5\u66f4\u65b9\u4fbf\u7684\u8fdb\u884c\u6d4b\u8bd5\u4f7f\u7528\uff0c\u540e\u7eed\u4e0d\u6392\u9664\u9690\u85cf\u8be5\u6570\u636e\u7ed3\u6784\u7684\u53ef\u80fd\u3002<\/li><li><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6570\u636e\u5305\u5728\u670d\u52a1\u5668\u7684\u5904\u7406\u5206\u63a5\u6536\u548c\u53d1\u9001\u4e24\u4e2a\u65b9\u5411\uff0c\u6536\u5305\u65b9\u5411\u56e0\u4e3a\u6211\u4eec\u81ea\u5df1\u672c\u8eab\u7684\u4e1a\u52a1\u573a\u666f\u6d89\u53ca\u6536\u5305\u6570\u636e\u5f88\u5c11\uff0c\u540e\u7eed\u53e6\u884c\u4ecb\u7ecd\u3002  &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/lovelyping.com\/?p=189\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cF-Stack\u53d1\u9001\u96f6\u62f7\u8d1d\u4ecb\u7ecd\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-189","post","type-post","status-publish","format-standard","hentry","category-f-stack"],"_links":{"self":[{"href":"https:\/\/lovelyping.com\/index.php?rest_route=\/wp\/v2\/posts\/189","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lovelyping.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lovelyping.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lovelyping.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lovelyping.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=189"}],"version-history":[{"count":4,"href":"https:\/\/lovelyping.com\/index.php?rest_route=\/wp\/v2\/posts\/189\/revisions"}],"predecessor-version":[{"id":193,"href":"https:\/\/lovelyping.com\/index.php?rest_route=\/wp\/v2\/posts\/189\/revisions\/193"}],"wp:attachment":[{"href":"https:\/\/lovelyping.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lovelyping.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lovelyping.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}