diff options
author | glebius <glebius@FreeBSD.org> | 2006-04-04 14:31:37 +0000 |
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committer | glebius <glebius@FreeBSD.org> | 2006-04-04 14:31:37 +0000 |
commit | cea41af9a0c8d6a0877d8cb4c7738fb8032b0e17 (patch) | |
tree | de3f80e9306cdf14aec99021ec677b8df8ea7ee2 /sys/netinet/tcp_subr.c | |
parent | aa27ccbc946387f4e550bb308803c93012b073bc (diff) | |
download | FreeBSD-src-cea41af9a0c8d6a0877d8cb4c7738fb8032b0e17.zip FreeBSD-src-cea41af9a0c8d6a0877d8cb4c7738fb8032b0e17.tar.gz |
Add a tunable net.inet.tcp.maxtcptw, that allows to set a limit
on tcptw zone independently from setting a limit on socket zone.
Diffstat (limited to 'sys/netinet/tcp_subr.c')
-rw-r--r-- | sys/netinet/tcp_subr.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/netinet/tcp_subr.c b/sys/netinet/tcp_subr.c index 465b958..a6e6ab8 100644 --- a/sys/netinet/tcp_subr.c +++ b/sys/netinet/tcp_subr.c @@ -177,6 +177,10 @@ static int tcp_isn_reseed_interval = 0; SYSCTL_INT(_net_inet_tcp, OID_AUTO, isn_reseed_interval, CTLFLAG_RW, &tcp_isn_reseed_interval, 0, "Seconds between reseeding of ISN secret"); +static int maxtcptw; +SYSCTL_INT(_net_inet_tcp, OID_AUTO, maxtcptw, CTLFLAG_RDTUN, + &maxtcptw, 0, "Maximum number of compressed TCP TIME_WAIT entries"); + /* * TCP bandwidth limiting sysctls. Note that the default lower bound of * 1024 exists only for debugging. A good production default would be @@ -290,9 +294,12 @@ tcp_init(void) tcpcb_zone = uma_zcreate("tcpcb", sizeof(struct tcpcb_mem), NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE); uma_zone_set_max(tcpcb_zone, maxsockets); + TUNABLE_INT_FETCH("net.inet.tcp.maxtcptw", &maxtcptw); + if (maxtcptw == 0) + maxtcptw = maxsockets / 5; tcptw_zone = uma_zcreate("tcptw", sizeof(struct tcptw), NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE); - uma_zone_set_max(tcptw_zone, maxsockets / 5); + uma_zone_set_max(tcptw_zone, maxtcptw); tcp_timer_init(); syncache_init(); tcp_hc_init(); |