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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>
This commit is contained in:
Vincent CUISSARD 2009-07-16 06:08:58 +00:00 committed by David S. Miller
parent 869f1c54e9
commit 7fefe6a884
1 changed files with 1 additions and 1 deletions
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2
drivers/net/usb/cdc_eem.c
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@ -311,7 +311,7 @@ static int eem_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
* bmCRC = 0 : CRC = 0xDEADBEEF * bmCRC = 0 : CRC = 0xDEADBEEF
*/ */
if (header & BIT(14)) if (header & BIT(14))
crc2 = ~crc32_le(~0, skb2->data, len); crc2 = ~crc32_le(~0, skb2->data, skb2->len);
else else
crc2 = 0xdeadbeef; crc2 = 0xdeadbeef;