From 6e15b7124990e4b91645601e7a90d3fe72873336 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Tue, 20 Dec 2005 15:08:09 -0800 Subject: [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 Signed-off-by: Jeff Garzik --- drivers/net/sky2.c | 9 +++++++++ 1 file changed, 9 insertions(+) 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); -- cgit v1.2.3-59-g8ed1b