diff options
| author | phk <phk@FreeBSD.org> | 1996-04-04 11:17:04 +0000 |
|---|---|---|
| committer | phk <phk@FreeBSD.org> | 1996-04-04 11:17:04 +0000 |
| commit | 8fad3d6dbca480451b498d8ab35d29929a194d5f (patch) | |
| tree | fda454e760993a83660c9825d732e2aed6a6da3a /sys | |
| parent | 1eff72b85f01104f3e70df608fae3fa61f8e8489 (diff) | |
| download | FreeBSD-src-8fad3d6dbca480451b498d8ab35d29929a194d5f.zip FreeBSD-src-8fad3d6dbca480451b498d8ab35d29929a194d5f.tar.gz | |
Add a sysctl (net.inet.tcp.always_keepalive: 0) that when set will force
keepalive on all tcp sessions. Setsockopt(2) cannot override this setting.
Maybe another one is needed that just changes the default for SO_KEEPALIVE ?
Requested by: Joe Greco <jgreco@brasil.moneng.mei.com>
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/netinet/tcp_timer.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sys/netinet/tcp_timer.c b/sys/netinet/tcp_timer.c index 66691ea..f9c89b7 100644 --- a/sys/netinet/tcp_timer.c +++ b/sys/netinet/tcp_timer.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)tcp_timer.c 8.2 (Berkeley) 5/24/95 - * $Id: tcp_timer.c,v 1.13 1996/01/04 21:34:21 olah Exp $ + * $Id: tcp_timer.c,v 1.14 1996/03/11 15:13:35 davidg Exp $ */ #ifndef TUBA_INCLUDE @@ -72,6 +72,10 @@ static int tcp_keepintvl = TCPTV_KEEPINTVL; SYSCTL_INT(_net_inet_tcp, TCPCTL_KEEPINTVL, keepintvl, CTLFLAG_RW, &tcp_keepintvl , 0, ""); +static int always_keepalive = 0; +SYSCTL_INT(_net_inet_tcp, OID_AUTO, always_keepalive, + CTLFLAG_RW, &always_keepalive , 0, ""); + static int tcp_keepcnt = TCPTV_KEEPCNT; /* max idle probes */ static int tcp_maxpersistidle = TCPTV_KEEP_IDLE; @@ -314,7 +318,8 @@ tcp_timers(tp, timer) tcpstat.tcps_keeptimeo++; if (tp->t_state < TCPS_ESTABLISHED) goto dropit; - if (tp->t_inpcb->inp_socket->so_options & SO_KEEPALIVE && + if ((always_keepalive || + tp->t_inpcb->inp_socket->so_options & SO_KEEPALIVE) && tp->t_state <= TCPS_CLOSE_WAIT) { if (tp->t_idle >= tcp_keepidle + tcp_maxidle) goto dropit; |
