udp: multicast RX should increment SNMP/sk_drops counter in allocation failures
When skb_clone() fails, we should increment sk_drops and SNMP counters.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 948e823..2915e1d 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -579,14 +579,20 @@
for (i = 0; i < count; i++) {
skb1 = (i == final) ? skb : skb_clone(skb, GFP_ATOMIC);
+ sk = stack[i];
if (skb1) {
- sk = stack[i];
bh_lock_sock(sk);
if (!sock_owned_by_user(sk))
udpv6_queue_rcv_skb(sk, skb1);
else
sk_add_backlog(sk, skb1);
bh_unlock_sock(sk);
+ } else {
+ atomic_inc(&sk->sk_drops);
+ UDP6_INC_STATS_BH(sock_net(sk),
+ UDP_MIB_RCVBUFERRORS, IS_UDPLITE(sk));
+ UDP6_INC_STATS_BH(sock_net(sk),
+ UDP_MIB_INERRORS, IS_UDPLITE(sk));
}
}
}
