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authorPeter Meerwald <pmeerw@pmeerw.net>2010-05-17 17:20:50 -0700
committerDavid S. Miller <davem@davemloft.net>2010-05-17 17:20:50 -0700
commitec497b32c311b1e1aac22a76d294d24285d06331 (patch)
tree5a7bac0a8019ba3433f0a8ebaf68e60f53783e26
parentfe92afedee23e1d91f0133360a24d2bf48270739 (diff)
netdev: bfin_mac: handler RX status errors
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/bfin_mac.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c
index a173d8a4048..16f2a37c733 100644
--- a/drivers/net/bfin_mac.c
+++ b/drivers/net/bfin_mac.c
@@ -980,12 +980,25 @@ out:
return NETDEV_TX_OK;
}
+#define RX_ERROR_MASK (RX_LONG | RX_ALIGN | RX_CRC | RX_LEN | \
+ RX_FRAG | RX_ADDR | RX_DMAO | RX_PHY | RX_LATE | RX_RANGE)
+
static void bfin_mac_rx(struct net_device *dev)
{
struct sk_buff *skb, *new_skb;
unsigned short len;
struct bfin_mac_local *lp __maybe_unused = netdev_priv(dev);
+ /* check if frame status word reports an error condition
+ * we which case we simply drop the packet
+ */
+ if (current_rx_ptr->status.status_word & RX_ERROR_MASK) {
+ printk(KERN_NOTICE DRV_NAME
+ ": rx: receive error - packet dropped\n");
+ dev->stats.rx_dropped++;
+ goto out;
+ }
+
/* allocate a new skb for next time receive */
skb = current_rx_ptr->skb;
@@ -1024,11 +1037,9 @@ static void bfin_mac_rx(struct net_device *dev)
netif_rx(skb);
dev->stats.rx_packets++;
dev->stats.rx_bytes += len;
+out:
current_rx_ptr->status.status_word = 0x00000000;
current_rx_ptr = current_rx_ptr->next;
-
-out:
- return;
}
/* interrupt routine to handle rx and error signal */