Mercurial > hg > nginx
diff src/core/ngx_connection.h @ 6153:4f6efabcb09b
The "reuseport" option of the "listen" directive.
When configured, an individual listen socket on a given address is
created for each worker process. This allows to reduce in-kernel lock
contention on configurations with high accept rates, resulting in better
performance. As of now it works on Linux and DragonFly BSD.
Note that on Linux incoming connection requests are currently tied up
to a specific listen socket, and if some sockets are closed, connection
requests will be reset, see https://lwn.net/Articles/542629/. With
nginx, this may happen if the number of worker processes is reduced.
There is no such problem on DragonFly BSD.
Based on previous work by Sepherosa Ziehau and Yingqi Lu.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Wed, 20 May 2015 15:51:56 +0300 |
| parents | 187aa751ad62 |
| children | 5e6142609e48 |
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--- a/src/core/ngx_connection.h +++ b/src/core/ngx_connection.h @@ -51,6 +51,8 @@ struct ngx_listening_s { ngx_listening_t *previous; ngx_connection_t *connection; + ngx_uint_t worker; + unsigned open:1; unsigned remain:1; unsigned ignore:1; @@ -66,6 +68,10 @@ struct ngx_listening_s { #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) unsigned ipv6only:1; #endif +#if (NGX_HAVE_REUSEPORT) + unsigned reuseport:1; + unsigned add_reuseport:1; +#endif unsigned keepalive:2; #if (NGX_HAVE_DEFERRED_ACCEPT) @@ -203,6 +209,7 @@ struct ngx_connection_s { ngx_listening_t *ngx_create_listening(ngx_conf_t *cf, void *sockaddr, socklen_t socklen); +ngx_int_t ngx_clone_listening(ngx_conf_t *cf, ngx_listening_t *ls); ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle); ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle); void ngx_configure_listening_sockets(ngx_cycle_t *cycle);