From: Steve Glendinning <steve.glendinning@smsc.com>
To: netdev@vger.kernel.org
Subject: [PATCH 1/6] smsc95xx: change hard_header_len to include csum offload bytes
Date: Wed, 10 Mar 2010 18:32:34 +0000 [thread overview]
Message-ID: <1268245959-13861-2-git-send-email-steve.glendinning@smsc.com> (raw)
In-Reply-To: <1268245959-13861-1-git-send-email-steve.glendinning@smsc.com>
If tx checksum offload is enabled on this device it requires 12
bytes of headroom instead of 8. This patch sets hard_header_len
to the larger of the two to help avoid skb_copy_expand.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
---
drivers/net/usb/smsc95xx.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index df9179a..4db0840 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -1037,7 +1037,7 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
dev->net->netdev_ops = &smsc95xx_netdev_ops;
dev->net->ethtool_ops = &smsc95xx_ethtool_ops;
dev->net->flags |= IFF_MULTICAST;
- dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD;
+ dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM;
return 0;
}
--
1.6.6.1
next prev parent reply other threads:[~2010-03-10 18:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-10 18:32 [PATCH 0/6] smsc95xx: minor fixes and tidy-ups Steve Glendinning
2010-03-10 18:32 ` Steve Glendinning [this message]
2010-03-10 18:32 ` [PATCH 2/6] smsc95xx: wait for PHY to complete reset during init Steve Glendinning
2010-03-10 18:32 ` [PATCH 3/6] smsc95xx: add constant definition for SMSC USB vendor id Steve Glendinning
2010-03-10 18:32 ` [PATCH 4/6] smsc95xx: sleep before read for lengthy operations Steve Glendinning
2010-03-10 18:32 ` [PATCH 5/6] smsc95xx: check return code from control messages Steve Glendinning
2010-03-10 18:32 ` [PATCH 6/6] smsc95xx: remove unnecessary variables Steve Glendinning
2010-03-12 13:32 ` [PATCH 5/6] smsc95xx: check return code from control messages Steve.Glendinning
2010-03-15 22:39 ` [PATCH 3/6] smsc95xx: add constant definition for SMSC USB vendor id David Miller
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