udp: Fix the SNMP counter of UDP_MIB_INERRORS

UDP packets received in udpv6_recvmsg() are not only IPv6 UDP packets, but
also have IPv4 UDP packets, so when do the counter of UDP_MIB_INERRORS in
udpv6_recvmsg(), we should check whether the packet is a IPv6 UDP packet
or a IPv4 UDP packet.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 18696af..8b48512 100644 (file)
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -236,8 +236,14 @@ out:
 
 csum_copy_err:
        lock_sock(sk);
-       if (!skb_kill_datagram(sk, skb, flags))
-               UDP6_INC_STATS_USER(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
+       if (!skb_kill_datagram(sk, skb, flags)) {
+               if (is_udp4)
+                       UDP_INC_STATS_USER(sock_net(sk),
+                                       UDP_MIB_INERRORS, is_udplite);
+               else
+                       UDP6_INC_STATS_USER(sock_net(sk),
+                                       UDP_MIB_INERRORS, is_udplite);
+       }
        release_sock(sk);
 
        if (flags & MSG_DONTWAIT)