[IPv6]: Exclude truncated packets from InHdrErrors statistics

Incoming trancated packets are counted as not only InTruncatedPkts but
also InHdrErrors. They should be counted as InTruncatedPkts only.

Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index 11bfc7c..61e7a6c 100644 (file)
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -108,8 +108,10 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
 
        /* pkt_len may be zero if Jumbo payload option is present */
        if (pkt_len || hdr->nexthdr != NEXTHDR_HOP) {
-               if (pkt_len + sizeof(struct ipv6hdr) > skb->len)
-                       goto truncated;
+               if (pkt_len + sizeof(struct ipv6hdr) > skb->len) {
+                       IP6_INC_STATS_BH(idev, IPSTATS_MIB_INTRUNCATEDPKTS);
+                       goto drop;
+               }
                if (pskb_trim_rcsum(skb, pkt_len + sizeof(struct ipv6hdr))) {
                        IP6_INC_STATS_BH(idev, IPSTATS_MIB_INHDRERRORS);
                        goto drop;
@@ -128,8 +130,6 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
        rcu_read_unlock();
 
        return NF_HOOK(PF_INET6,NF_IP6_PRE_ROUTING, skb, dev, NULL, ip6_rcv_finish);
-truncated:
-       IP6_INC_STATS_BH(idev, IPSTATS_MIB_INTRUNCATEDPKTS);
 err:
        IP6_INC_STATS_BH(idev, IPSTATS_MIB_INHDRERRORS);
 drop: