[IPV6]: Need to use pskb_trim_rcsum().

Fix pskb_trim usage in ipv6. Only the udp one is really
a bug, other places are just doing equivalent code.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 5 deletions

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 5be6da2584ee..3b9fa900a4bf 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -459,11 +459,10 @@ static int ipv6_hop_jumbo(struct sk_buff *skb, int optoff)
                 IP6_INC_STATS_BH(IPSTATS_MIB_INTRUNCATEDPKTS);
                 goto drop;
         }
-        if (pkt_len + sizeof(struct ipv6hdr) < skb->len) {
-                __pskb_trim(skb, pkt_len + sizeof(struct ipv6hdr));
-                if (skb->ip_summed == CHECKSUM_HW)
-                        skb->ip_summed = CHECKSUM_NONE;
-        }
+
+        if (pskb_trim_rcsum(skb, pkt_len + sizeof(struct ipv6hdr)))
+                goto drop;
+
         return 1;
 
 drop: