igmp: Call skb_checksum_simple_validate

Use skb_checksum_simple_validate to verify checksum.

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

1 files changed, 2 insertions, 10 deletions

diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 97e4d1655d26..17d34e3c2ac3 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -988,16 +988,8 @@ int igmp_rcv(struct sk_buff *skb)
         if (!pskb_may_pull(skb, sizeof(struct igmphdr)))
                 goto drop;
 
-        switch (skb->ip_summed) {
-        case CHECKSUM_COMPLETE:
-                if (!csum_fold(skb->csum))
-                        break;
-                /* fall through */
-        case CHECKSUM_NONE:
-                skb->csum = 0;
-                if (__skb_checksum_complete(skb))
-                        goto drop;
-        }
+        if (skb_checksum_simple_validate(skb))
+                goto drop;
 
         ih = igmp_hdr(skb);
         switch (ih->type) {