bridge: multicast: call skb_checksum_{simple_, }validate

Let's use these new, neat helpers.
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/bridge/br_multicast.c

@@ -1610,16 +1610,8 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
 	if (!pskb_may_pull(skb2, sizeof(*ih)))
 		goto out;
 
-	switch (skb2->ip_summed) {
-	case CHECKSUM_COMPLETE:
-		if (!csum_fold(skb2->csum))
-			break;
-		/* fall through */
-	case CHECKSUM_NONE:
-		skb2->csum = 0;
-		if (skb_checksum_complete(skb2))
-			goto out;
-	}
+	if (skb_checksum_simple_validate(skb2))
+		goto out;
 
 	err = 0;
 
@@ -1737,20 +1729,8 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
 
 	ip6h = ipv6_hdr(skb2);
 
-	switch (skb2->ip_summed) {
-	case CHECKSUM_COMPLETE:
-		if (!csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr, skb2->len,
-					IPPROTO_ICMPV6, skb2->csum))
-			break;
-		/*FALLTHROUGH*/
-	case CHECKSUM_NONE:
-		skb2->csum = ~csum_unfold(csum_ipv6_magic(&ip6h->saddr,
-							&ip6h->daddr,
-							skb2->len,
-							IPPROTO_ICMPV6, 0));
-		if (__skb_checksum_complete(skb2))
-			goto out;
-	}
+	if (skb_checksum_validate(skb2, IPPROTO_ICMPV6, ip6_compute_pseudo))
+		goto out;
 
 	err = 0;