[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>
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index c7b4da1..9b428e4 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1694,6 +1694,9 @@
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 @@
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);