From: Steve Glendinning <steve.glendinning@shawell.net>
To: netdev@vger.kernel.org
Cc: Stephane Fillod <fillods@users.sf.net>,
"David S. Miller" <davem@davemloft.net>,
Steve Glendinning <steve.glendinning@shawell.net>
Subject: [PATCH] net: usb: smsc95xx: fix mtu
Date: Thu, 26 Apr 2012 10:02:44 +0100 [thread overview]
Message-ID: <1335430964-1018-1-git-send-email-steve.glendinning@shawell.net> (raw)
Make smsc95xx recalculate the hard_mtu after adjusting the hard_header_len.
Without this, usbnet adjusts the MTU down to 1492 bytes, and the host is
unable to receive standard 1500-byte frames from the device.
Inspired by same fixes on cdc_eem 78fb72f7936c01d5b426c03a691eca082b03f2b9
and smsc75xx a99ff7d0123b19ecad3b589480b6542716ab6b52.
Tested on i386 with EVB-LAN9500-LC.
Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net>
---
drivers/net/usb/smsc95xx.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 5f19f84..53a1ba5 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -1017,6 +1017,7 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
dev->net->ethtool_ops = &smsc95xx_ethtool_ops;
dev->net->flags |= IFF_MULTICAST;
dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM;
+ dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
return 0;
}
--
1.7.5.4
next reply other threads:[~2012-04-26 9:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-26 9:02 Steve Glendinning [this message]
2012-04-26 9:38 ` [PATCH] net: usb: smsc95xx: fix mtu David Miller
2012-04-26 9:56 ` Steve Glendinning
-- strict thread matches above, loose matches on Subject: below --
2012-04-20 19:39 Stephane Fillod
2012-04-24 4:29 ` David Miller
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