Messages in this thread Patch in this message |  | | | Date | Wed, 09 May 2012 06:51:50 +0100 | | From | Ben Hutchings <> | | Subject | [ 081/167] [PATCH 21/26] net: usb: smsc75xx: fix mtu |
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3.2-stable review patch. If anyone has any objections, please let me know.
------------------ From: Stephane Fillod <fillods@users.sf.net>
[ Upstream commit a99ff7d0123b19ecad3b589480b6542716ab6b52 ]
Make smsc75xx 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 fix on cdc_eem 78fb72f7936c01d5b426c03a691eca082b03f2b9.
Tested on ARM/Omap3 with EVB-LAN7500-LC.
Signed-off-by: Stephane Fillod <fillods@users.sf.net> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/net/usb/smsc75xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index a5b9b12..7bd219b 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -1050,6 +1050,7 @@ static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) dev->net->ethtool_ops = &smsc75xx_ethtool_ops; dev->net->flags |= IFF_MULTICAST; dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; + dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; return 0; } -- 1.7.10
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