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authorThomas Graf <tgraf@suug.ch>2006-10-13 15:01:03 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-10-15 23:14:19 -0700
commitadaa70bbdfbc725e485179b06c8b23a20fbb7952 (patch)
treec402d42c660163902e1667fd67a00de409ac4a68 /net/ipv6/fib6_rules.c
parent918049f0135854a1583f9b3b88f44dbf2b027329 (diff)
downloadop-kernel-dev-adaa70bbdfbc725e485179b06c8b23a20fbb7952.zip
op-kernel-dev-adaa70bbdfbc725e485179b06c8b23a20fbb7952.tar.gz
[IPv6] rules: Use RT6_LOOKUP_F_HAS_SADDR and fix source based selectors
Fixes rt6_lookup() to provide the source address in the flow and sets RT6_LOOKUP_F_HAS_SADDR whenever it is present in the flow. Avoids unnecessary prefix comparisons by checking for a prefix length first. Fixes the rule logic to not match packets if a source selector has been specified but no source address is available. Thanks to Kim Nordlund <kim.nordlund@nokia.com> for working on this patch with me. Signed-off-by: Thomas Graf <tgraf@suug.ch> Acked-by: Ville Nuorvala <vnuorval@tcs.hut.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/fib6_rules.c')
-rw-r--r--net/ipv6/fib6_rules.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index d8c1057..1896ecb 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -117,12 +117,15 @@ static int fib6_rule_match(struct fib_rule *rule, struct flowi *fl, int flags)
{
struct fib6_rule *r = (struct fib6_rule *) rule;
- if (!ipv6_prefix_equal(&fl->fl6_dst, &r->dst.addr, r->dst.plen))
+ if (r->dst.plen &&
+ !ipv6_prefix_equal(&fl->fl6_dst, &r->dst.addr, r->dst.plen))
return 0;
- if ((flags & RT6_LOOKUP_F_HAS_SADDR) &&
- !ipv6_prefix_equal(&fl->fl6_src, &r->src.addr, r->src.plen))
- return 0;
+ if (r->src.plen) {
+ if (!(flags & RT6_LOOKUP_F_HAS_SADDR) ||
+ !ipv6_prefix_equal(&fl->fl6_src, &r->src.addr, r->src.plen))
+ return 0;
+ }
if (r->tclass && r->tclass != ((ntohl(fl->fl6_flowlabel) >> 20) & 0xff))
return 0;
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