xfrm: Use a static gc threshold value for ipv6 (c3813286) · Commits · 戴 / test

net/ipv6/xfrm6_policy.c

+1 −15

Original line number	Diff line number	Diff line
		@@ -327,21 +327,7 @@ static struct ctl_table_header *sysctl_hdr;
		int __init xfrm6_init(void)
		{
		int ret;
		unsigned int gc_thresh;

		/*
		* We need a good default value for the xfrm6 gc threshold.
		* In ipv4 we set it to the route hash table size * 8, which
		* is half the size of the maximaum route cache for ipv4. It
		* would be good to do the same thing for v6, except the table is
		* constructed differently here. Here each table for a net namespace
		* can have FIB_TABLE_HASHSZ entries, so lets go with the same
		* computation that we used for ipv4 here. Also, lets keep the initial
		* gc_thresh to a minimum of 1024, since, the ipv6 route cache defaults
		* to that as a minimum as well
		*/
		gc_thresh = FIB6_TABLE_HASHSZ * 8;
		xfrm6_dst_ops.gc_thresh = (gc_thresh < 1024) ? 1024 : gc_thresh;
		dst_entries_init(&xfrm6_dst_ops);

		ret = xfrm6_policy_init();