linux-kernel - [PATCH 1/2] bridge: multicast: call skb_checksum_{simple

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1428687999-18428-1-git-send-email-linus.luessing@c0d3.blue>
Date:	Fri, 10 Apr 2015 19:46:38 +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 <therbert@...gle.com>,
	"David S. Miller" <davem@...emloft.net>
Cc:	Linus Lüssing <linus.luessing@...3.blue>
Subject: [PATCH 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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/