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authorStephen Hemminger <shemminger@osdl.org>2005-12-20 15:08:09 -0800
committerJeff Garzik <jgarzik@pobox.com>2005-12-24 09:38:35 -0500
commit6e15b7124990e4b91645601e7a90d3fe72873336 (patch)
tree4b7e90e86467ed541c055a69362dc5ba8bc34ec8 /drivers/net/sky2.c
parent6ed995bb29f042eece8392d9bae0b83f84bcdb23 (diff)
downloadlwn-6e15b7124990e4b91645601e7a90d3fe72873336.tar.gz
lwn-6e15b7124990e4b91645601e7a90d3fe72873336.zip
[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>
Diffstat (limited to 'drivers/net/sky2.c')
-rw-r--r--drivers/net/sky2.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index c7b4da1d717f..9b428e423c3d 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1694,6 +1694,9 @@ static struct sk_buff *sky2_receive(struct sky2_port *sky2,
if (!(status & GMR_FS_RX_OK))
goto resubmit;
+ if ((status >> 16) != length || length > sky2->rx_bufsize)
+ goto oversize;
+
if (length < copybreak) {
skb = alloc_skb(length + 2, GFP_ATOMIC);
if (!skb)
@@ -1735,7 +1738,13 @@ resubmit:
return skb;
+oversize:
+ ++sky2->net_stats.rx_over_errors;
+ goto resubmit;
+
error:
+ ++sky2->net_stats.rx_errors;
+
if (netif_msg_rx_err(sky2))
printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
sky2->netdev->name, status, length);