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    Subject[PATCH AUTOSEL 4.20 052/304] usbnet: smsc95xx: fix rx packet alignment
    Date
    From: Ben Dooks <ben.dooks@codethink.co.uk>

    [ Upstream commit 810eeb1f41a9a272eedc94ca18c072e75678ede4 ]

    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>
    ---
    drivers/net/usb/smsc95xx.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
    index f2d01cb6f958..6e971628bb50 100644
    --- a/drivers/net/usb/smsc95xx.c
    +++ b/drivers/net/usb/smsc95xx.c
    @@ -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);

    --
    2.19.1
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