Commit 7fefe6a8 authored Jul 16, 2009 by Vincent CUISSARD Committed by David S. Miller Jul 16, 2009

cdc-eem: bad crc checking

When the driver received an EEM packet with CRC option enabled, driver must
compute and check the CRC of the Ethernet data. Previous version computes CRC
on Ethernet data plus the original CRC value. Skbuff is correctly trimed but
the old length is used when CRC is computed.

Signed-off-by: Vincent CUISSARD <vincent.cuissard@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 869f1c54

drivers/net/usb/cdc_eem.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -311,7 +311,7 @@ static int eem_rx_fixup(struct usbnet dev, struct sk_buff skb)
		* bmCRC = 0 : CRC = 0xDEADBEEF
		*/
		if (header & BIT(14))
		crc2 = ~crc32_le(~0, skb2->data, len);
		crc2 = ~crc32_le(~0, skb2->data, skb2->len);
		else
		crc2 = 0xdeadbeef;