icmp6: Call skb_checksum_validate

Use skb_checksum_validate to verify checksum.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 3b0905b..8d39527 100644 (file)
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -692,22 +692,11 @@ static int icmpv6_rcv(struct sk_buff *skb)
        saddr = &ipv6_hdr(skb)->saddr;
        daddr = &ipv6_hdr(skb)->daddr;
 
-       /* Perform checksum. */
-       switch (skb->ip_summed) {
-       case CHECKSUM_COMPLETE:
-               if (!csum_ipv6_magic(saddr, daddr, skb->len, IPPROTO_ICMPV6,
-                                    skb->csum))
-                       break;
-               /* fall through */
-       case CHECKSUM_NONE:
-               skb->csum = ~csum_unfold(csum_ipv6_magic(saddr, daddr, skb->len,
-                                            IPPROTO_ICMPV6, 0));
-               if (__skb_checksum_complete(skb)) {
-                       LIMIT_NETDEBUG(KERN_DEBUG
-                                      "ICMPv6 checksum failed [%pI6c > %pI6c]\n",
-                                      saddr, daddr);
-                       goto csum_error;
-               }
+       if (skb_checksum_validate(skb, IPPROTO_ICMPV6, ip6_compute_pseudo)) {
+               LIMIT_NETDEBUG(KERN_DEBUG
+                              "ICMPv6 checksum failed [%pI6c > %pI6c]\n",
+                              saddr, daddr);
+               goto csum_error;
        }
 
        if (!pskb_pull(skb, sizeof(*hdr)))