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changeset 9221:bed832296f5d

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Stream: the "deferred" parameter of the "listen" directive. The Linux TCP_DEFER_ACCEPT support.
author Sergey Kandaurov <pluknet@nginx.com>
date Fri, 22 Mar 2024 14:53:19 +0400
parents c8cf6b1cc82e
children c78790d3d061
files src/stream/ngx_stream.c src/stream/ngx_stream.h src/stream/ngx_stream_core_module.c
diffstat 3 files changed, 24 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/src/stream/ngx_stream.c	Fri Mar 22 14:53:19 2024 +0400
+++ b/src/stream/ngx_stream.c	Fri Mar 22 14:53:19 2024 +0400
@@ -1021,6 +1021,10 @@
     ls->keepcnt = addr->opt.tcp_keepcnt;
 #endif
 
+#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
+    ls->deferred_accept = addr->opt.deferred_accept;
+#endif
+
 #if (NGX_HAVE_INET6)
     ls->ipv6only = addr->opt.ipv6only;
 #endif
--- a/src/stream/ngx_stream.h	Fri Mar 22 14:53:19 2024 +0400
+++ b/src/stream/ngx_stream.h	Fri Mar 22 14:53:19 2024 +0400
@@ -53,6 +53,7 @@
 #if (NGX_HAVE_INET6)
     unsigned                       ipv6only:1;
 #endif
+    unsigned                       deferred_accept:1;
     unsigned                       reuseport:1;
     unsigned                       so_keepalive:2;
     unsigned                       proxy_protocol:1;
--- a/src/stream/ngx_stream_core_module.c	Fri Mar 22 14:53:19 2024 +0400
+++ b/src/stream/ngx_stream_core_module.c	Fri Mar 22 14:53:19 2024 +0400
@@ -1015,6 +1015,19 @@
             continue;
         }
 
+        if (ngx_strcmp(value[i].data, "deferred") == 0) {
+#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
+            lsopt.deferred_accept = 1;
+            lsopt.set = 1;
+            lsopt.bind = 1;
+#else
+            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                               "the deferred accept is not supported "
+                               "on this platform, ignored");
+#endif
+            continue;
+        }
+
         if (ngx_strncmp(value[i].data, "ipv6only=o", 10) == 0) {
 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
             if (ngx_strcmp(&value[i].data[10], "n") == 0) {
@@ -1173,6 +1186,12 @@
             return "\"backlog\" parameter is incompatible with \"udp\"";
         }
 
+#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
+        if (lsopt.deferred_accept) {
+            return "\"deferred\" parameter is incompatible with \"udp\"";
+        }
+#endif
+
 #if (NGX_STREAM_SSL)
         if (lsopt.ssl) {
             return "\"ssl\" parameter is incompatible with \"udp\"";