From 704aed53b4e43bebfbd425cf95b66794a9cfa2c2 Mon Sep 17 00:00:00 2001
From: Mitsuru Chinen <mitch@linux.vnet.ibm.com>
Date: Mon, 30 Apr 2007 00:46:30 -0700
Subject: [PATCH] [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>
---
net/ipv4/ip_input.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 63ab5230c611..c8c455dd9caf 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -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
--
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