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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 | |
| parent | f66ef2d0649b220874532dfb83b6b5b368f83591 (diff) | |
| download | kernel_samsung_smdk4412-1f8438a853667d48055ad38384c63e94b32c6578.zip kernel_samsung_smdk4412-1f8438a853667d48055ad38384c63e94b32c6578.tar.gz kernel_samsung_smdk4412-1f8438a853667d48055ad38384c63e94b32c6578.tar.bz2 | |
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>
| -rw-r--r-- | include/linux/snmp.h | 1 | ||||
| -rw-r--r-- | net/ipv4/icmp.c | 5 | ||||
| -rw-r--r-- | net/ipv6/icmp.c | 2 | ||||
| -rw-r--r-- | net/ipv6/proc.c | 1 |
4 files changed, 7 insertions, 2 deletions
diff --git a/include/linux/snmp.h b/include/linux/snmp.h index d2a9aa3..5279771 100644 --- a/include/linux/snmp.h +++ b/include/linux/snmp.h @@ -100,6 +100,7 @@ enum ICMP6_MIB_INMSGS, /* InMsgs */ ICMP6_MIB_INERRORS, /* InErrors */ ICMP6_MIB_OUTMSGS, /* OutMsgs */ + ICMP6_MIB_OUTERRORS, /* OutErrors */ __ICMP6_MIB_MAX }; diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index 4b4c2bc..d2aa743 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; diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index eb9abe2..a00c18a 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -482,6 +482,7 @@ route_done: np->tclass, NULL, &fl, (struct rt6_info*)dst, MSG_DONTWAIT); if (err) { + ICMP6_INC_STATS_BH(net, idev, ICMP6_MIB_OUTMSGS); ip6_flush_pending_frames(sk); goto out_put; } @@ -562,6 +563,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb) (struct rt6_info*)dst, MSG_DONTWAIT); if (err) { + ICMP6_INC_STATS_BH(net, idev, ICMP6_MIB_OUTMSGS); ip6_flush_pending_frames(sk); goto out_put; } diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c index 58344c0..458eabf 100644 --- a/net/ipv6/proc.c +++ b/net/ipv6/proc.c @@ -97,6 +97,7 @@ static const struct snmp_mib snmp6_icmp6_list[] = { SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS), SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS), SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS), + SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS), SNMP_MIB_SENTINEL }; |