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Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/route.c27
1 files changed, 18 insertions, 9 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 6d506230622..4a8cb041f07 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -459,6 +459,21 @@ static struct rt6_info *rt6_cow(struct rt6_info *ort, struct in6_addr *daddr,
return rt;
}
+static struct rt6_info *rt6_alloc_clone(struct rt6_info *ort, struct in6_addr *daddr)
+{
+ struct rt6_info *rt = ip6_rt_copy(ort);
+ if (rt) {
+ ipv6_addr_copy(&rt->rt6i_dst.addr, daddr);
+ rt->rt6i_dst.plen = 128;
+ rt->rt6i_flags |= RTF_CACHE;
+ if (rt->rt6i_flags & RTF_REJECT)
+ rt->u.dst.error = ort->u.dst.error;
+ rt->u.dst.flags |= DST_HOST;
+ rt->rt6i_nexthop = neigh_clone(ort->rt6i_nexthop);
+ }
+ return rt;
+}
+
#define BACKTRACK() \
if (rt == &ip6_null_entry && strict) { \
while ((fn = fn->parent) != NULL) { \
@@ -1240,17 +1255,11 @@ void rt6_pmtu_discovery(struct in6_addr *daddr, struct in6_addr *saddr,
ip6_ins_rt(nrt, NULL, NULL, NULL);
} else {
- nrt = ip6_rt_copy(rt);
- if (nrt == NULL)
+ nrt = rt6_alloc_clone(rt, daddr);
+ if (!nrt)
goto out;
- ipv6_addr_copy(&nrt->rt6i_dst.addr, daddr);
- nrt->rt6i_dst.plen = 128;
- nrt->u.dst.flags |= DST_HOST;
- nrt->rt6i_nexthop = neigh_clone(rt->rt6i_nexthop);
dst_set_expires(&nrt->u.dst, ip6_rt_mtu_expires);
- nrt->rt6i_flags |= RTF_DYNAMIC|RTF_CACHE|RTF_EXPIRES;
- if (nrt->rt6i_flags & RTF_REJECT)
- nrt->u.dst.error = rt->u.dst.error;
+ nrt->rt6i_flags |= RTF_DYNAMIC|RTF_EXPIRES;
nrt->u.dst.metrics[RTAX_MTU-1] = pmtu;
if (allfrag)
nrt->u.dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;