[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 <[email protected]> Signed-off-by: David S. Miller <[email protected]>
chewitt · Apr 30, 2007 · 704aed5 · 704aed5
1 parent e91a47e
commit 704aed5
Showing 1 changed file with 4 additions and 1 deletion.
diff --git 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