linux-kernel - [PATCHv3 net-next 1/2] bridge: multicast: call skb_checksum_{simple

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Message-Id: <1430568067-6912-2-git-send-email-linus.luessing@c0d3.blue>
Date:	Sat,  2 May 2015 14:01:06 +0200
From:	Linus Lüssing <linus.luessing@...3.blue>
To:	b.a.t.m.a.n@...ts.open-mesh.org, netdev@...r.kernel.org,
	bridge@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Stephen Hemminger <stephen@...workplumber.org>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Tom Herbert <tom@...bertland.com>,
	"David S. Miller" <davem@...emloft.net>
Cc:	Linus Lüssing <linus.luessing@...3.blue>
Subject: [PATCHv3 net-next 1/2] bridge: multicast: call skb_checksum_{simple_,
 }validate

Let's use these new, neat helpers.

Signed-off-by: Linus Lüssing <linus.luessing@...3.blue>
---
 net/bridge/br_multicast.c |   28 ++++------------------------
 1 file changed, 4 insertions(+), 24 deletions(-)

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 4b6722f..b52f4cb 100644
--- a/net/bridge/br_multicast.c
+++ b/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;
 
-- 
1.7.10.4

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