netdev - Re: git-net, git-netdev-all and everything else on g5

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Date:	Fri, 29 Jun 2007 03:18:31 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org,
	Stephen Hemminger <shemminger@...ux-foundation.org>
Subject: Re: git-net, git-netdev-all and everything else on g5

On Thu, Jun 28, 2007 at 09:13:38AM +0000, Andrew Morton wrote:
> 
> With the full -mm lineup, my tg3-using powerpc g5 spits lots of these:
> 
> windfarm: Drive bay control loop started.
> audit(1183017094.732:2): audit_pid=2117 old=0 by auid=4294967295
> ------------[ cut here ]------------
> Badness at net/core/dev.c:1303

Hmm, we really should come up with a better way for checking
checksum support.

[NET]: Fix TX checksum feature check

This patch fixes a boolean error in the new TX checksum check
that causes bogus TSO packets to be generated.

Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
diff --git a/net/core/dev.c b/net/core/dev.c
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1509,11 +1509,11 @@ int dev_queue_xmit(struct sk_buff *skb)
 		skb_set_transport_header(skb, skb->csum_start -
 					      skb_headroom(skb));
 
-		if (!(dev->features & NETIF_F_GEN_CSUM)
-		    || ((dev->features & NETIF_F_IP_CSUM)
-			&& skb->protocol == htons(ETH_P_IP))
-		    || ((dev->features & NETIF_F_IPV6_CSUM)
-			&& skb->protocol == htons(ETH_P_IPV6)))
+		if (!(dev->features & NETIF_F_GEN_CSUM) &&
+		    !((dev->features & NETIF_F_IP_CSUM) &&
+		      skb->protocol == htons(ETH_P_IP)) &&
+		    !((dev->features & NETIF_F_IPV6_CSUM) &&
+		      skb->protocol == htons(ETH_P_IPV6)))
 			if (skb_checksum_help(skb))
 				goto out_kfree_skb;
 	}
-
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