{"id":400,"date":"2025-12-14T11:43:14","date_gmt":"2025-12-14T03:43:14","guid":{"rendered":"https:\/\/www.garfield-blog.top\/?p=400"},"modified":"2025-12-14T11:43:14","modified_gmt":"2025-12-14T03:43:14","slug":"%e3%80%90%e6%ba%90%e7%a0%81%e8%a7%a3%e6%9e%90%e3%80%91hostapd7%e7%ae%a1%e7%90%86%e5%b8%a7%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.garfield-blog.top\/?p=400","title":{"rendered":"\u3010\u6e90\u7801\u89e3\u6790\u3011hostapd(7)\u7ba1\u7406\u5e27\u5904\u7406"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">NL80211\u6a21\u5757\u63a5\u53e3<\/h2>\n\n\n\n<p><code>hostapd<\/code>\u4e3b\u8981\u7684\u4e00\u4e2a\u529f\u80fd\u4fbf\u662f\u5904\u7406\u7ba1\u7406\u5e27\uff0c\u5728\u8fc7\u53bb\uff0c\u63a5\u6536\u548c\u53d1\u9001\u7ba1\u7406\u5e27\u90fd\u9700\u8981\u7531 <code>monitor<\/code> \u6a21\u5f0f\u7684\u63a5\u53e3\u6765\u8fdb\u884c\uff0c\u90a3\u65f6\u9700\u8981\u4e00\u4e2a\u8fd0\u884c <code>master<\/code> \u6a21\u5f0f\u7684\u63a5\u53e3\u6765\u5904\u7406\u6807\u51c6\u6d41\u91cf\uff0c\u8fd8\u9700\u8981\u53e6\u4e00\u4e2a\u5355\u72ec\u7684\u63a5\u53e3\u8d1f\u8d23\u8fdb\u884c\u8ba4\u8bc1\u3001\u5bc6\u94a5\u7ba1\u7406\u7b49\u5de5\u4f5c\u3002\u7b2c\u4e8c\u4e2a\u63a5\u53e3\u53ef\u4ee5\u4f7f\u7528\u6807\u51c6\u7684 <code>Linux socket<\/code> \u8fdb\u884c\u8bfb\u5199\uff0c\u800c\u4e0d\u9700\u8981\u4efb\u4f55\u7279\u6b8a\u7684 <code>API<\/code> \u3002\u4f5c\u4e3a\u5907\u4efd\uff0c<code>nl80211<\/code> \u9a71\u52a8\u4ecd\u7136\u652f\u6301\u8be5\u65b9\u6cd5<\/p>\n\n\n\n<p>\u540e\u6765\uff0c<code>nl80211<\/code> \u5b9e\u73b0\u4e86\u7528\u4e8e\u53d1\u9001\u7ba1\u7406\u5e27\uff08<code>NL80211_CMD_FRAME<\/code>\uff09\u4e0e\u63a5\u6536\u8fd4\u56de\uff08<code>NL80211_CMD_REGISTER_FRAME<\/code>\uff09\u7684\u7279\u6b8a\u547d\u4ee4\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u5728\u7528\u6237\u7a7a\u95f4\u4f7f\u7528\u5355\u4e00\u7684\u63a5\u53e3\u6765\u7ba1\u7406\u65e0\u7ebf\u57fa\u7840\u8bbe\u65bd\u4e86\u3002\u8fd9\u662f\u76ee\u524d\u63a8\u8350\u7684\u4f7f\u7528\u7ba1\u7406\u5e27\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u88ab\u7528\u4e8e\u6240\u6709\u5b9e\u73b0 <code>AP<\/code> \u6a21\u5f0f\u7684 <code>mac80211<\/code> \u9a71\u52a8<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">hostapd\u6a21\u5757\u5bf9\u7ba1\u7406\u5e27\u7684\u5904\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ba1\u7406\u5e27\u7684\u63a5\u6536<\/h3>\n\n\n\n<p>\u5173\u4e8e<code>wifi<\/code>\u7ba1\u7406\u5e27\u7684\u5904\u7406\uff0c\u5927\u4f53\u6d41\u7a0b\u662f\uff0c<code>hostapd<\/code>\u4f1a\u63d0\u524d\u5c06\u7f51\u5361\u8bbe\u7f6e\u4e3a<code>AP<\/code>\u6a21\u5f0f\uff0c\u521b\u5efa<code>socket<\/code>\u7ed1\u5b9a\u7f51\u5361\uff0c\u5e95\u5c42\u786c\u4ef6\u5728\u63a5\u6536\u5230<code>wifi<\/code>\u6570\u636e\u540e\u9996\u5148\u5c06\u6570\u636e\u4ece\u5185\u6838\u4f20\u5230\u7528\u6237\u6001\uff0c\u7531<code>hostapd<\/code>\u8bbe\u7f6e\u7684<code>TX<\/code>\u4e8b\u4ef6\u7684\u56de\u8c03\uff0c\u5728\u5bf9\u5e94\u7684\u56de\u8c03\u51fd\u6570\u4e2d\u5206\u6790\u5e27\u683c\u5f0f<\/p>\n\n\n\n<p>\u63a5\u53d7\u5185\u6838\u53d1\u9001\u7684\u7ba1\u7406\u5e27\u662f\u901a\u8fc7<code>nl80211<\/code>\u6765\u5b9e\u73b0\uff0c\u5177\u4f53\u662f\u901a\u8fc7<code>NL80211_CMD_FRAME<\/code>\u6765\u8fdb\u884c\u63a5\u6536\uff0c<code>hostapd<\/code>\u4e2d\u4f7f\u7528<code>hostapd_mgmt_rx<\/code>\u6765\u63a5\u53d7\u5185\u6838\u53d1\u6765\u7684\u6570\u636e<\/p>\n\n\n\n<p><strong>\u5728mac80211\u4e2d\u4e5f\u4f1a\u6709\u5173\u4e8e\u7ba1\u7406\u5e27\u7684\u5904\u7406\u903b\u8f91<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ba1\u7406\u5e27\u7684\u6784\u9020\u548c\u53d1\u9001<\/h3>\n\n\n\n<p>\u5bf9\u4e8e\u7ba1\u7406\u5e27\u7684\u6784\u9020\u5219\u662f\u901a\u8fc7<code>hostapd<\/code>\u548c\u9a71\u52a8\u6765\u4e00\u8d77\u5b8c\u6210<\/p>\n\n\n\n<p><code>hostapd<\/code> (\u7528\u6237\u7a7a\u95f4) \u7684\u804c\u8d23\uff1a\u6784\u9020\u4e3b\u8981\u5185\u5bb9\u548c\u903b\u8f91<\/p>\n\n\n\n<p><code>hostapd<\/code> \u8d1f\u8d23\u7ba1\u7406\u63a5\u5165\u70b9 (<code>AP<\/code>) \u7684\u9ad8\u5c42\u903b\u8f91\u548c\u7b56\u7565\uff0c\u56e0\u6b64\u5b83\u9700\u8981<strong>\u6784\u9020<\/strong>\u7ba1\u7406\u5e27\u7684\u5927\u90e8\u5206\u5185\u5bb9<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6784\u9020\u5e27\u5185\u5bb9\uff1a<\/strong> <code>hostapd<\/code> \u751f\u6210\u8ba4\u8bc1\u54cd\u5e94\u3001\u5173\u8054\u54cd\u5e94\u3001<code>EAPOL<\/code> \u5bc6\u94a5\u4ea4\u6362\u6d88\u606f\u3001\u89e3\u9664\u8ba4\u8bc1\/\u89e3\u9664\u5173\u8054\u8bf7\u6c42\u7b49\u5e27\u7684\u8d1f\u8f7d (<code>payload<\/code>) \u548c\u5404\u79cd\u4fe1\u606f\u5143\u7d20 (<code>IEs<\/code>)\u3002\u5b83\u51b3\u5b9a\u4e86\u5e27\u4e2d\u7684\u5b89\u5168\u53c2\u6570\u3001\u652f\u6301\u901f\u7387\u3001<code>SSID<\/code>\u3001\u8ba4\u8bc1\u7b97\u6cd5\u7b49\u5177\u4f53\u5185\u5bb9<\/li>\n\n\n\n<li><strong>\u5b89\u5168\u548c\u52a0\u5bc6\uff1a<\/strong> \u5bc6\u94a5\u7ba1\u7406\u548c\u7ba1\u7406\u5e27\u4fdd\u62a4 (<code>PMF<\/code>, <code>802.11w<\/code>) \u7684\u52a0\u5bc6\u903b\u8f91\u90fd\u5728 <code>hostapd<\/code> \u4e2d\u5b9e\u73b0<\/li>\n<\/ul>\n\n\n\n<p>\u9a71\u52a8\/\u5185\u6838 (\u5185\u6838\u7a7a\u95f4) \u7684\u804c\u8d23\uff1a\u5c01\u88c5\u3001\u53d1\u9001\u548c\u5e95\u5c42\u5904\u7406<\/p>\n\n\n\n<p>\u9a71\u52a8\u7a0b\u5e8f\u548c\u5185\u6838\u7684 <code>mac80211<\/code> \u5b50\u7cfb\u7edf\u8d1f\u8d23\u5904\u7406\u4e0e\u786c\u4ef6\u76f8\u5173\u7684\u5e95\u5c42\u4efb\u52a1<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5e95\u5c42\u5c01\u88c5\uff1a<\/strong> <code>hostapd<\/code> \u5c06\u6784\u9020\u597d\u7684\u5e27\u6570\u636e\u901a\u8fc7 <code>Netlink<\/code> \u63a5\u53e3 (<code>NL80211_CMD_FRAME<\/code> \u547d\u4ee4) \u53d1\u9001\u7ed9\u5185\u6838\u3002\u5185\u6838\u548c\u9a71\u52a8\u8d1f\u8d23\u6dfb\u52a0\u5fc5\u8981\u7684\u5e95\u5c42 <code>MAC<\/code> \u5934\u90e8\u3001<code>CRC<\/code> \u6821\u9a8c\u3001\u65f6\u95f4\u6233\uff0c\u5e76\u5c06\u6570\u636e\u5305\u4f20\u8f93\u5230\u7269\u7406\u7a7a\u4e2d<\/li>\n\n\n\n<li><strong>\u4fe1\u6807\u5e27\u7684\u6a21\u677f\uff1a<\/strong> \u5bf9\u4e8e\u9700\u8981\u5468\u671f\u6027\u3001\u9ad8\u7cbe\u5ea6\u53d1\u9001\u7684\u4fe1\u6807\u5e27 (<code>Beacon Frames<\/code>)\uff0c<code>hostapd<\/code> \u4f1a\u521b\u5efa\u4fe1\u6807\u5e27\u7684\u201c\u6a21\u677f\u201d\u5e76\u5c06\u5176\u4f20\u9012\u7ed9\u5185\u6838\/\u9a71\u52a8\u3002\u5185\u6838\u968f\u540e\u5728\u786c\u4ef6\u5c42\u9762\u81ea\u52a8\u3001\u5468\u671f\u6027\u5730\u53d1\u9001\u8fd9\u4e9b\u4fe1\u6807\u5e27\uff0c\u51cf\u8f7b\u7528\u6237\u7a7a\u95f4\u7684\u8d1f\u62c5<\/li>\n\n\n\n<li><strong>\u786c\u4ef6\u5378\u8f7d\uff1a<\/strong> \u67d0\u4e9b\u9a71\u52a8\u548c\u786c\u4ef6\u751a\u81f3\u53ef\u4ee5\u5904\u7406\u90e8\u5206\u7ba1\u7406\u5e27\u7684\u81ea\u52a8\u54cd\u5e94\uff08\u4f8b\u5982\uff0c\u7b80\u5355\u7684 <code>Probe Response<\/code>\uff09\uff0c\u4f46\u5bf9\u4e8e\u590d\u6742\u7684\u8ba4\u8bc1\u6d41\u7a0b\uff0c\u63a7\u5236\u6743\u4ecd\u5728 <code>hostapd<\/code><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">wifi\u6570\u636e\u5e27\u7684\u5904\u7406<\/h2>\n\n\n\n<p><code>wifi<\/code>\u6570\u636e\u5e27\u7684\u5904\u7406\u4e3b\u8981\u662f\u5728\u5185\u6838\u534f\u8bae\u6808\u548c\u9a71\u52a8\u6765\u8fdb\u884c\u5b8c\u6210\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\u5185\u6838\u534f\u8bae\u6808\u5e76\u4e0d\u533a\u5206<code>802.11<\/code>\u6570\u636e\u5e27\u548c<code>802.3<\/code>\u6570\u636e\u5e27\uff0c\u6240\u6709\u7684<code>802.11<\/code>\u6570\u636e\u5e27\u4f1a\u8f6c\u6362\u6210<code>802.3<\/code>\u6570\u636e\u5e27\u3002\u5bf9\u4e8e<code>802.11<\/code>\u6570\u636e\u5e27\u548c<code>802.3<\/code>\u6570\u636e\u5e27\u4e4b\u95f4\u7684\u8f6c\u5316\u5728\u7269\u7406\u5c42\u3001<code>wifi<\/code>\u9a71\u52a8\u548c\u5185\u6838\u7684<code>mac80211<\/code>\u6a21\u5757\u6765\u8fdb\u884c<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u53c2\u8003\u6587\u6863<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><a href=\"https:\/\/wireless.docs.kernel.org\/en\/latest\/en\/users\/documentation\/hostapd.html\">https:\/\/wireless.docs.kernel.org\/en\/latest\/en\/users\/documentation\/hostapd.html<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/631945116\">Linux hostapd \uff08Linux Wireless \u6587\u6863\u7ffb\u8bd1\uff09 &#8211; \u77e5\u4e4e<\/a><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>NL80211\u6a21\u5757\u63a5\u53e3 hostapd\u4e3b\u8981\u7684\u4e00\u4e2a\u529f\u80fd\u4fbf\u662f\u5904\u7406\u7ba1\u7406\u5e27\uff0c\u5728\u8fc7\u53bb\uff0c\u63a5\u6536\u548c\u53d1\u9001\u7ba1\u7406\u5e27\u90fd\u9700\u8981\u7531 moni [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-400","post","type-post","status-publish","format-standard","hentry","category-source-code-analysis"],"_links":{"self":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts\/400","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=400"}],"version-history":[{"count":1,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts\/400\/revisions"}],"predecessor-version":[{"id":401,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts\/400\/revisions\/401"}],"wp:attachment":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=400"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}