d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add a tunable net.inet.tcp.maxtcptw, that allows to set a limit

Browse Source 
on tcptw zone independently from setting a limit on socket zone.
This commit is contained in:
glebius 2006-04-04 14:31:37 +00:00
parent aa27ccbc94
commit cea41af9a0
2 changed files with 16 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
sys/netinet/tcp_subr.c
View File

@ -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();

9
sys/netinet/tcp_timewait.c
View File

@ -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();