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boot time size the flowtable

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MFC after:	3 days
This commit is contained in:
Kip Macy 2010-05-10 21:31:20 +00:00
parent 910a59c4c3
commit 693810835d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=207902
1 changed files with 15 additions and 3 deletions
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18
sys/netinet6/ip6_input.c
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@ -177,9 +177,21 @@ ip6_init(void)
frag6_init();
#ifdef FLOWTABLE
TUNABLE_INT_FETCH("net.inet6.ip6.output_flowtable_size",
&V_ip6_output_flowtable_size);
V_ip6_ft = flowtable_alloc("ipv6", V_ip6_output_flowtable_size, FL_PCPU);
if (TUNABLE_INT_FETCH("net.inet6.ip6.output_flowtable_size",
&V_ip6_output_flowtable_size)) {
if (V_ip6_output_flowtable_size < 256)
V_ip6_output_flowtable_size = 256;
if (!powerof2(V_ip6_output_flowtable_size)) {
printf("flowtable must be power of 2 size\n");
V_ip6_output_flowtable_size = 2048;
}
} else {
/*
* round up to the next power of 2
*/
V_ip6_output_flowtable_size = 1 << fls((1024 + maxusers * 64)-1);
}
V_ip6_ft = flowtable_alloc("ipv6", V_ip6_output_flowtable_size, FL_PCPU);
#endif
V_ip6_desync_factor = arc4random() % MAX_TEMP_DESYNC_FACTOR;