diff options
| author | pkelsey <pkelsey@FreeBSD.org> | 2015-12-28 02:43:12 +0000 |
|---|---|---|
| committer | pkelsey <pkelsey@FreeBSD.org> | 2015-12-28 02:43:12 +0000 |
| commit | ca800abb78cb6010f8fa04bd0ba6cb26e7722d92 (patch) | |
| tree | d59fdf105fd7c8c6f25f22dda7cc1ca51c702fe8 /sys/netinet/tcp_subr.c | |
| parent | a2034803c3289c1600ea2ec5fa2e9dbed47bdc62 (diff) | |
| download | FreeBSD-src-ca800abb78cb6010f8fa04bd0ba6cb26e7722d92.zip FreeBSD-src-ca800abb78cb6010f8fa04bd0ba6cb26e7722d92.tar.gz | |
MFC r292706:
Implementation of server-side TCP Fast Open (TFO) [RFC7413].
TFO is disabled by default in the kernel build. See the top comment
in sys/netinet/tcp_fastopen.c for implementation particulars.
Differential Revision: https://reviews.freebsd.org/D4350
Sponsored by: Verisign, Inc.
Diffstat (limited to 'sys/netinet/tcp_subr.c')
| -rw-r--r-- | sys/netinet/tcp_subr.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sys/netinet/tcp_subr.c b/sys/netinet/tcp_subr.c index 7bdd573..3ce21a9 100644 --- a/sys/netinet/tcp_subr.c +++ b/sys/netinet/tcp_subr.c @@ -83,6 +83,9 @@ __FBSDID("$FreeBSD$"); #include <netinet6/nd6.h> #endif +#ifdef TCP_RFC7413 +#include <netinet/tcp_fastopen.h> +#endif #include <netinet/tcp_fsm.h> #include <netinet/tcp_seq.h> #include <netinet/tcp_timer.h> @@ -427,6 +430,10 @@ tcp_init(void) SHUTDOWN_PRI_DEFAULT); EVENTHANDLER_REGISTER(maxsockets_change, tcp_zone_change, NULL, EVENTHANDLER_PRI_ANY); + +#ifdef TCP_RFC7413 + tcp_fastopen_init(); +#endif } #ifdef VIMAGE @@ -434,6 +441,9 @@ void tcp_destroy(void) { +#ifdef TCP_RFC7413 + tcp_fastopen_destroy(); +#endif tcp_hc_destroy(); syncache_destroy(); tcp_tw_destroy(); @@ -1102,6 +1112,17 @@ tcp_close(struct tcpcb *tp) if (tp->t_state == TCPS_LISTEN) tcp_offload_listen_stop(tp); #endif +#ifdef TCP_RFC7413 + /* + * This releases the TFO pending counter resource for TFO listen + * sockets as well as passively-created TFO sockets that transition + * from SYN_RECEIVED to CLOSED. + */ + if (tp->t_tfo_pending) { + tcp_fastopen_decrement_counter(tp->t_tfo_pending); + tp->t_tfo_pending = NULL; + } +#endif in_pcbdrop(inp); TCPSTAT_INC(tcps_closed); KASSERT(inp->inp_socket != NULL, ("tcp_close: inp_socket NULL")); |
