Date: Mon, 10 May 2010 21:31:20 +0000 (UTC) From: Kip Macy <kmacy@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r207902 - head/sys/netinet6 Message-ID: <201005102131.o4ALVKmg074548@svn.freebsd.org>
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Author: kmacy Date: Mon May 10 21:31:20 2010 New Revision: 207902 URL: http://svn.freebsd.org/changeset/base/207902 Log: boot time size the flowtable MFC after: 3 days Modified: head/sys/netinet6/ip6_input.c Modified: head/sys/netinet6/ip6_input.c ============================================================================== --- head/sys/netinet6/ip6_input.c Mon May 10 21:04:45 2010 (r207901) +++ head/sys/netinet6/ip6_input.c Mon May 10 21:31:20 2010 (r207902) @@ -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;
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