From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Dooks Subject: [PATCH 4/4] usbnet: smsc95xx: fix rx packet alignment Date: Tue, 2 Oct 2018 10:26:45 +0100 Message-ID: <20181002092645.1115-5-ben.dooks@codethink.co.uk> References: <20181002092645.1115-1-ben.dooks@codethink.co.uk> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Cc: oneukum@suse.com, davem@davemloft.net, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kernel@lists.codethink.co.uk, Ben Dooks To: netdev@vger.kernel.org Return-path: In-Reply-To: <20181002092645.1115-1-ben.dooks@codethink.co.uk> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org 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 --- 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 46385a4b8b98..2b867523cd53 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -1296,6 +1296,7 @@ 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); -- 2.19.0