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[IPV4] SNMP: Support InTruncatedPkts 

An IP datagram which is being discarded because the datagram frame
didn't carry enough data should be counted as InTruncatedPkts.

Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mitsuru Chinen 2007-04-30 00:46:30 -07:00 committed by David S. Miller
parent e91a47ebb1
commit 704aed53b4
1 changed files with 4 additions and 1 deletions
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5
net/ipv4/ip_input.c
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@ -416,7 +416,10 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
goto inhdr_error;
len = ntohs(iph->tot_len);
if (skb->len < len || len < (iph->ihl*4))
if (skb->len < len) {
IP_INC_STATS_BH(IPSTATS_MIB_INTRUNCATEDPKTS);
goto drop;
} else if (len < (iph->ihl*4))
goto inhdr_error;
/* Our transport medium may have padded the buffer out. Now we know it