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>

1 files changed, 5 insertions, 16 deletions

diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 3b0905b77127..8d3952796d39 100644
--- 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)))