Title: [7878] branches/2009R1/drivers/net/bfin_mac.c: Bug[#5716] handle rx error status in bfin mac driver.
- Revision
- 7878
- Author
- sonicz
- Date
- 2009-11-25 05:39:05 -0500 (Wed, 25 Nov 2009)
Log Message
Bug[#5716] handle rx error status in bfin mac driver.
Modified Paths
Diff
Modified: branches/2009R1/drivers/net/bfin_mac.c (7877 => 7878)
--- branches/2009R1/drivers/net/bfin_mac.c 2009-11-25 10:37:28 UTC (rev 7877)
+++ branches/2009R1/drivers/net/bfin_mac.c 2009-11-25 10:39:05 UTC (rev 7878)
@@ -681,6 +681,8 @@
}
#define ETH_FCS_LENGTH 4
+#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)
{
@@ -690,6 +692,15 @@
unsigned int i;
unsigned char fcs[ETH_FCS_LENGTH + 1];
#endif
+ /* 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;
@@ -743,10 +754,10 @@
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;
}
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