Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Ben Dooks <ben.dooks@codethink.co.uk>
To:     netdev@vger.kernel.org
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 <ben.dooks@codethink.co.uk>
Subject: [PATCH 1/8] usbnet: smsc95xx: fix rx packet alignment
Date:   Fri, 12 Oct 2018 09:33:58 +0100
Message-Id: <20181012083405.19246-2-ben.dooks@codethink.co.uk>
In-Reply-To: <20181012083405.19246-1-ben.dooks@codethink.co.uk>
References: <20181012083405.19246-1-ben.dooks@codethink.co.uk>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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>
---
 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 06b4d290784d..401ec9feb495 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -1292,6 +1292,7 @@ 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