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Diffstat (limited to 'net/ipv4/route.c')
-rw-r--r--net/ipv4/route.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index fd9ecb52c66b..82cf2a722b23 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -934,12 +934,14 @@ static u32 __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu)
if (mtu < ip_rt_min_pmtu)
mtu = ip_rt_min_pmtu;
+ rcu_read_lock();
if (fib_lookup(dev_net(rt->dst.dev), fl4, &res) == 0) {
struct fib_nh *nh = &FIB_RES_NH(res);
update_or_create_fnhe(nh, fl4->daddr, 0, mtu,
jiffies + ip_rt_mtu_expires);
}
+ rcu_read_unlock();
return mtu;
}
@@ -956,7 +958,7 @@ static void ip_rt_update_pmtu(struct dst_entry *dst, struct sock *sk,
dst->obsolete = DST_OBSOLETE_KILL;
} else {
rt->rt_pmtu = mtu;
- dst_set_expires(&rt->dst, ip_rt_mtu_expires);
+ rt->dst.expires = max(1UL, jiffies + ip_rt_mtu_expires);
}
}
@@ -1263,7 +1265,7 @@ static void ipv4_dst_destroy(struct dst_entry *dst)
{
struct rtable *rt = (struct rtable *) dst;
- if (dst->flags & DST_NOCACHE) {
+ if (!list_empty(&rt->rt_uncached)) {
spin_lock_bh(&rt_uncached_lock);
list_del(&rt->rt_uncached);
spin_unlock_bh(&rt_uncached_lock);