diff options
| author | glebius <glebius@FreeBSD.org> | 2006-09-08 13:09:15 +0000 |
|---|---|---|
| committer | glebius <glebius@FreeBSD.org> | 2006-09-08 13:09:15 +0000 |
| commit | 9dc28ac0b4752bea8cbeafd6c6c063ed4a4a0039 (patch) | |
| tree | e2d87d4fb591ed78dacff417b91c5e106c54519b /sys/netinet/tcp_timewait.c | |
| parent | 454c903c073d0b9a35bedbdbb7800d2023496691 (diff) | |
| download | FreeBSD-src-9dc28ac0b4752bea8cbeafd6c6c063ed4a4a0039.zip FreeBSD-src-9dc28ac0b4752bea8cbeafd6c6c063ed4a4a0039.tar.gz | |
Add a sysctl net.inet.tcp.nolocaltimewait that allows to suppress
creating a compress TIME WAIT states, if both connection endpoints
are local. Default is off.
Diffstat (limited to 'sys/netinet/tcp_timewait.c')
| -rw-r--r-- | sys/netinet/tcp_timewait.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/sys/netinet/tcp_timewait.c b/sys/netinet/tcp_timewait.c index 85d5a9e..fb0fba5 100644 --- a/sys/netinet/tcp_timewait.c +++ b/sys/netinet/tcp_timewait.c @@ -202,6 +202,11 @@ SYSCTL_PROC(_net_inet_tcp, OID_AUTO, maxtcptw, CTLTYPE_INT|CTLFLAG_RW, &maxtcptw, 0, sysctl_maxtcptw, "IU", "Maximum number of compressed TCP TIME_WAIT entries"); +static int nolocaltimewait = 0; +SYSCTL_INT(_net_inet_tcp, OID_AUTO, nolocaltimewait, CTLFLAG_RW, + &nolocaltimewait, 0, "Do not create compressed TCP TIME_WAIT entries" + "for local connections"); + /* * TCP bandwidth limiting sysctls. Note that the default lower bound of * 1024 exists only for debugging. A good production default would be @@ -1735,12 +1740,19 @@ void tcp_twstart(struct tcpcb *tp) { struct tcptw *tw; - struct inpcb *inp; + struct inpcb *inp = tp->t_inpcb; int acknow; struct socket *so; INP_INFO_WLOCK_ASSERT(&tcbinfo); /* tcp_timer_2msl_reset(). */ - INP_LOCK_ASSERT(tp->t_inpcb); + INP_LOCK_ASSERT(inp); + + if (nolocaltimewait && in_localip(inp->inp_faddr)) { + tp = tcp_close(tp); + if (tp != NULL) + INP_UNLOCK(inp); + return; + } tw = uma_zalloc(tcptw_zone, M_NOWAIT); if (tw == NULL) { @@ -1748,11 +1760,10 @@ tcp_twstart(struct tcpcb *tp) if (tw == NULL) { tp = tcp_close(tp); if (tp != NULL) - INP_UNLOCK(tp->t_inpcb); + INP_UNLOCK(inp); return; } } - inp = tp->t_inpcb; tw->tw_inpcb = inp; /* |
