From 917690cd035b422b1ac933ac160d26016aa454ac Mon Sep 17 00:00:00 2001
From: Brice Goglin <brice@myri.com>
Date: Tue, 27 Mar 2007 21:54:53 +0200
Subject: [PATCH] myri10ge: correctly detect when TSO should be used

Correctly detect when TSO should be used on transmit by looking at the
skb->gso_size rather than seeing if the frame was larger than our MTU.
The old method causes problems when a host with a large (jumbo) MTU is
sending to a host with a small (standard) MTU.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
 drivers/net/myri10ge/myri10ge.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index b05b20ef8c0a..c216e6a5d235 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -71,7 +71,7 @@
 #include "myri10ge_mcp.h"
 #include "myri10ge_mcp_gen_header.h"
 
-#define MYRI10GE_VERSION_STR "1.3.0-1.226"
+#define MYRI10GE_VERSION_STR "1.3.0-1.227"
 
 MODULE_DESCRIPTION("Myricom 10G driver (10GbE)");
 MODULE_AUTHOR("Maintainer: help@myri.com");
@@ -2015,10 +2015,9 @@ again:
 	mss = 0;
 	max_segments = MXGEFW_MAX_SEND_DESC;
 
-	if (skb->len > (dev->mtu + ETH_HLEN)) {
+	if (skb_is_gso(skb)) {
 		mss = skb_shinfo(skb)->gso_size;
-		if (mss != 0)
-			max_segments = MYRI10GE_MAX_SEND_DESC_TSO;
+		max_segments = MYRI10GE_MAX_SEND_DESC_TSO;
 	}
 
 	if ((unlikely(avail < max_segments))) {
-- 
2.30.2