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| author |   Eric Dumazet <eric.dumazet@gmail.com> | 2010-04-03 15:09:04 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-04-03 15:09:04 -0700 |
| commit | 1f8438a853667d48055ad38384c63e94b32c6578 (patch) | |
| tree | d515b2246023abce5f151f35d70d270fa05b90c7 /net/ipv4 | |
| parent | l2tp: Fix L2TP_DEBUGFS ifdef tests. (diff) | |
| download | linux-dev-1f8438a853667d48055ad38384c63e94b32c6578.tar.xz linux-dev-1f8438a853667d48055ad38384c63e94b32c6578.zip | |
icmp: Account for ICMP out errors
When ip_append() fails because of socket limit or memory shortage,
increment ICMP_MIB_OUTERRORS counter, so that "netstat -s" can report
these errors.
LANG=C netstat -s | grep "ICMP messages failed"
0 ICMP messages failed
For IPV6, implement ICMP6_MIB_OUTERRORS counter as well.
# grep Icmp6OutErrors /proc/net/dev_snmp6/*
/proc/net/dev_snmp6/eth0:Icmp6OutErrors 0
/proc/net/dev_snmp6/lo:Icmp6OutErrors 0
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/icmp.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index 4b4c2bcd15db..d2aa7438c523 100644 --- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -330,9 +330,10 @@ static void icmp_push_reply(struct icmp_bxm *icmp_param, if (ip_append_data(sk, icmp_glue_bits, icmp_param, icmp_param->data_len+icmp_param->head_len, icmp_param->head_len, - ipc, rt, MSG_DONTWAIT) < 0) + ipc, rt, MSG_DONTWAIT) < 0) { + ICMP_INC_STATS_BH(sock_net(sk), ICMP_MIB_OUTERRORS); ip_flush_pending_frames(sk); - else if ((skb = skb_peek(&sk->sk_write_queue)) != NULL) { + } else if ((skb = skb_peek(&sk->sk_write_queue)) != NULL) { struct icmphdr *icmph = icmp_hdr(skb); __wsum csum = 0; struct sk_buff *skb1; |