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[PATCH] sky2: handle hardware packet overrun 

It is possible for hardware to get confused when an oversized frame
is received. In that case, just drop the packet and increment a counter.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Stephen Hemminger 2005-12-20 15:08:09 -08:00 committed by Jeff Garzik
parent 6ed995bb29
commit 6e15b71249
1 changed files with 9 additions and 0 deletions
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9
drivers/net/sky2.c
View File

@ -1694,6 +1694,9 @@ static struct sk_buff *sky2_receive(struct sky2_port *sky2,
if (!(status & GMR_FS_RX_OK)) if (!(status & GMR_FS_RX_OK))
goto resubmit; goto resubmit;
if ((status >> 16) != length || length > sky2->rx_bufsize)
goto oversize;
if (length < copybreak) { if (length < copybreak) {
skb = alloc_skb(length + 2, GFP_ATOMIC); skb = alloc_skb(length + 2, GFP_ATOMIC);
if (!skb) if (!skb)
@ -1735,7 +1738,13 @@ resubmit:
return skb; return skb;
oversize:
++sky2->net_stats.rx_over_errors;
goto resubmit;
error: error:
++sky2->net_stats.rx_errors;
if (netif_msg_rx_err(sky2)) if (netif_msg_rx_err(sky2))
printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n", printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
sky2->netdev->name, status, length); sky2->netdev->name, status, length);