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Commit 3e215c8d authored by James M Leddy's avatar James M Leddy Committed by David S. Miller
Browse files

udp: Add MIB counters for rcvbuferrors 



Add MIB counters for rcvbuferrors in UDP to help diagnose problems.

Signed-off-by: default avatarJames M Leddy <james.leddy@redhat.com>
Acked-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 73413ffa

net/ipv4/udp.c

+4 −1
Original line number Original line Diff line number Diff line
@@ -1588,8 +1588,11 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) 
		goto csum_error;

		goto csum_error;









	if (sk_rcvqueues_full(sk, skb, sk->sk_rcvbuf))

	if (sk_rcvqueues_full(sk, skb, sk->sk_rcvbuf)) {

		UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_RCVBUFERRORS,

				 is_udplite);

		goto drop;

		goto drop;

	}





	rc = 0;

	rc = 0;

net/ipv6/udp.c

+5 −1
Original line number Original line Diff line number Diff line
@@ -674,8 +674,11 @@ int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) 
			goto csum_error;

			goto csum_error;

	}

	}





	if (sk_rcvqueues_full(sk, skb, sk->sk_rcvbuf))

	if (sk_rcvqueues_full(sk, skb, sk->sk_rcvbuf)) {

		UDP6_INC_STATS_BH(sock_net(sk),

				  UDP_MIB_RCVBUFERRORS, is_udplite);

		goto drop;

		goto drop;

	}





	skb_dst_drop(skb);

	skb_dst_drop(skb);
@@ -690,6 +693,7 @@ int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) 
	bh_unlock_sock(sk);

	bh_unlock_sock(sk);





	return rc;

	return rc;



csum_error:

csum_error:

	UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);

	UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);

drop:

drop: