From: Michael Chan <mchan@broadcom.com>
Date: Tue, 8 May 2007 02:04:17 +0000 (-0700)
Subject: [PATCH] BNX2: Fix TSO problem with small MSS.
X-Git-Tag: v2.6.21.2~45
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2503fa413e630097ec362ddaa57602a7e243f89f;p=thirdparty%2Fkernel%2Fstable.git

[PATCH] BNX2: Fix TSO problem with small MSS.

Remove the check for skb->len greater than MTU when doing TSO.  When
the destination has a smaller MSS than the source, a TSO packet may
be smaller than the MTU at the source and we still need to process it
as a TSO packet.

Thanks to Brian Ristuccia <bristuccia@starentnetworks.com> for
reporting the problem.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index e85f5ec48f96f..d6d57a17f3fdb 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -4510,8 +4510,7 @@ bnx2_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		vlan_tag_flags |=
 			(TX_BD_FLAGS_VLAN_TAG | (vlan_tx_tag_get(skb) << 16));
 	}
-	if ((mss = skb_shinfo(skb)->gso_size) &&
-		(skb->len > (bp->dev->mtu + ETH_HLEN))) {
+	if ((mss = skb_shinfo(skb)->gso_size)) {
 		u32 tcp_opt_len, ip_tcp_len;
 
 		if (skb_header_cloned(skb) &&