diff options
| author | Gleb Smirnoff <glebius@FreeBSD.org> | 2016-01-27 00:45:46 +0000 |
|---|---|---|
| committer | Gleb Smirnoff <glebius@FreeBSD.org> | 2016-01-27 00:45:46 +0000 |
| commit | 57a78e3baeb583a817195e5aee153f6387b9b2b0 (patch) | |
| tree | dd0b39d31460d52fec634711ce845f26d7406828 /sys/netinet/tcp_syncache.c | |
| parent | 2027d8784f8376de9f24d93495cb879349ab1220 (diff) | |
Notes
Diffstat (limited to 'sys/netinet/tcp_syncache.c')
| -rw-r--r-- | sys/netinet/tcp_syncache.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/sys/netinet/tcp_syncache.c b/sys/netinet/tcp_syncache.c index 940d3de237ce..45e00e97083a 100644 --- a/sys/netinet/tcp_syncache.c +++ b/sys/netinet/tcp_syncache.c @@ -351,6 +351,7 @@ syncache_insert(struct syncache *sc, struct syncache_head *sch) SCH_UNLOCK(sch); + TCPSTAT_INC(tcps_states[TCPS_SYN_RECEIVED]); TCPSTAT_INC(tcps_sc_added); } @@ -364,6 +365,7 @@ syncache_drop(struct syncache *sc, struct syncache_head *sch) SCH_LOCK_ASSERT(sch); + TCPSTAT_DEC(tcps_states[TCPS_SYN_RECEIVED]); TAILQ_REMOVE(&sch->sch_bucket, sc, sc_hash); sch->sch_length--; @@ -992,7 +994,16 @@ syncache_expand(struct in_conninfo *inc, struct tcpopt *to, struct tcphdr *th, goto failed; } } else { - /* Pull out the entry to unlock the bucket row. */ + /* + * Pull out the entry to unlock the bucket row. + * + * NOTE: We must decrease TCPS_SYN_RECEIVED count here, not + * tcp_state_change(). The tcpcb is not existent at this + * moment. A new one will be allocated via syncache_socket-> + * sonewconn->tcp_usr_attach in TCPS_CLOSED state, then + * syncache_socket() will change it to TCPS_SYN_RECEIVED. + */ + TCPSTAT_DEC(tcps_states[TCPS_SYN_RECEIVED]); TAILQ_REMOVE(&sch->sch_bucket, sc, sc_hash); sch->sch_length--; #ifdef TCP_OFFLOAD |