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usbnet: smsc95xx: fix rx packet alignment

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[ Upstream commit 810eeb1f41 ]

The smsc95xx driver already takes into account the NET_IP_ALIGN
parameter when setting up the receive packet data, which means
we do not need to worry about aligning the packets in the usbnet
driver.

Adding the EVENT_NO_IP_ALIGN means that the IPv4 header is now
passed to the ip_rcv() routine with the start on an aligned address.

Tested on Raspberry Pi B3.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ben Dooks 2018-11-14 11:50:19 +00:00 committed by Greg Kroah-Hartman
parent 5ca33f7980
commit ab96959699
1 changed files with 1 additions and 0 deletions
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drivers/net/usb/smsc95xx.c
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@ -1295,6 +1295,7 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
dev->net->features |= NETIF_F_RXCSUM;
dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
set_bit(EVENT_NO_IP_ALIGN, &dev->flags);
smsc95xx_init_mac_address(dev);