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Diffstat (limited to 'net/ipv6/addrconf.c')
-rw-r--r--net/ipv6/addrconf.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index c134286d6a41..f66a1cae3366 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2374,7 +2374,8 @@ static struct fib6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
continue;
if ((rt->fib6_flags & noflags) != 0)
continue;
- fib6_info_hold(rt);
+ if (!fib6_info_hold_safe(rt))
+ continue;
break;
}
out:
@@ -4528,6 +4529,7 @@ static int modify_prefix_route(struct inet6_ifaddr *ifp,
unsigned long expires, u32 flags)
{
struct fib6_info *f6i;
+ u32 prio;
f6i = addrconf_get_prefix_route(&ifp->addr,
ifp->prefix_len,
@@ -4536,13 +4538,15 @@ static int modify_prefix_route(struct inet6_ifaddr *ifp,
if (!f6i)
return -ENOENT;
- if (f6i->fib6_metric != ifp->rt_priority) {
+ prio = ifp->rt_priority ? : IP6_RT_PRIO_ADDRCONF;
+ if (f6i->fib6_metric != prio) {
+ /* delete old one */
+ ip6_del_rt(dev_net(ifp->idev->dev), f6i);
+
/* add new one */
addrconf_prefix_route(&ifp->addr, ifp->prefix_len,
ifp->rt_priority, ifp->idev->dev,
expires, flags, GFP_KERNEL);
- /* delete old one */
- ip6_del_rt(dev_net(ifp->idev->dev), f6i);
} else {
if (!expires)
fib6_clean_expires(f6i);