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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2006-08-23 17:22:39 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-22 14:55:52 -0700
commit982f56f3a9be4651520c0fdd3d80a5d02e95a178 (patch)
treed58b624d1a384bb280aecc2b626c2c18c072eb7d
parent7fc33165a74301b2c5c90b2f2a1f6907cbd5c6f1 (diff)
[IPV6] ROUTE: Search subtree when backtracking.
Based on MIPL2 kernel patch. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Ville Nuorvala <vnuorval@tcs.hut.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv6/route.c30
1 files changed, 18 insertions, 12 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 8d00a9d77f0..bd4cf175ff1 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -481,17 +481,23 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
}
#endif
-#define BACKTRACK() \
-if (rt == &ip6_null_entry && flags & RT6_F_STRICT) { \
- while ((fn = fn->parent) != NULL) { \
- if (fn->fn_flags & RTN_TL_ROOT) { \
- dst_hold(&rt->u.dst); \
- goto out; \
+#define BACKTRACK(saddr) \
+do { \
+ if (rt == &ip6_null_entry) { \
+ struct fib6_node *pn; \
+ while (fn) { \
+ if (fn->fn_flags & RTN_TL_ROOT) \
+ goto out; \
+ pn = fn->parent; \
+ if (FIB6_SUBTREE(pn) && FIB6_SUBTREE(pn) != fn) \
+ fn = fib6_lookup(pn->subtree, NULL, saddr); \
+ else \
+ fn = pn; \
+ if (fn->fn_flags & RTN_RTINFO) \
+ goto restart; \
} \
- if (fn->fn_flags & RTN_RTINFO) \
- goto restart; \
} \
-}
+} while(0)
static struct rt6_info *ip6_pol_route_lookup(struct fib6_table *table,
struct flowi *fl, int flags)
@@ -504,7 +510,7 @@ static struct rt6_info *ip6_pol_route_lookup(struct fib6_table *table,
restart:
rt = fn->leaf;
rt = rt6_device_match(rt, fl->oif, flags & RT6_F_STRICT);
- BACKTRACK();
+ BACKTRACK(&fl->fl6_src);
dst_hold(&rt->u.dst);
out:
read_unlock_bh(&table->tb6_lock);
@@ -638,7 +644,7 @@ restart_2:
restart:
rt = rt6_select(&fn->leaf, fl->iif, strict | reachable);
- BACKTRACK();
+ BACKTRACK(&fl->fl6_src);
if (rt == &ip6_null_entry ||
rt->rt6i_flags & RTF_CACHE)
goto out;
@@ -733,7 +739,7 @@ restart_2:
restart:
rt = rt6_select(&fn->leaf, fl->oif, strict | reachable);
- BACKTRACK();
+ BACKTRACK(&fl->fl6_src);
if (rt == &ip6_null_entry ||
rt->rt6i_flags & RTF_CACHE)
goto out;