redonkable/alistair23-linux
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smsc95xx: strip ethernet fcs (crc) on receive path

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The smsc95xx driver was forwarding the trailing fcs on received frames
up the stack leading to confusion in tcpdump.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Tested-by: Steve Glendinning <steve.glendinning@smsc.com>
Acked-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peter Korsgaard 2009-05-13 10:10:41 +00:00 committed by David S. Miller
parent 61189c78bd
commit df18acca8e
1 changed files with 2 additions and 2 deletions
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4
drivers/net/usb/smsc95xx.c
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@ -1134,7 +1134,7 @@ static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
if (skb->len == size) {
if (pdata->use_rx_csum)
smsc95xx_rx_csum_offload(skb);
skb_trim(skb, skb->len - 4); /* remove fcs */
skb->truesize = size + sizeof(struct sk_buff);
return 1;
@ -1152,7 +1152,7 @@ static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
if (pdata->use_rx_csum)
smsc95xx_rx_csum_offload(ax_skb);
skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
ax_skb->truesize = size + sizeof(struct sk_buff);
usbnet_skb_return(dev, ax_skb);