>From af800d0f123cf9c66a9ae167baa7dc1d25d0cd1f Mon Sep 17 00:00:00 2001 From: Zhu Yanjun Date: Mon, 12 May 2014 11:07:20 +0800 Subject: [PATCH 1/1] icmp: account for ICMP out errors because of socket limit When icmp_xmit_lock fails because of socket limit or memory shortage, increment ICMP_MIB_OUTERRORS counter, so that "netstat -s" can report these errors. netstat -s | grep "ICMP messages failed" 0 ICMP messages failed Signed-off-by: Zhu Yanjun --- net/ipv4/icmp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index 0134663..9a0bd7c 100644 --- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -342,8 +342,10 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb) return; sk = icmp_xmit_lock(net); - if (sk == NULL) + if (sk == NULL){ + ICMP_INC_STATS_BH(net, ICMP_MIB_OUTERRORS); return; + } inet = inet_sk(sk); icmp_param->data.icmph.checksum = 0; -- 1.7.9.5