Automatic merge of /spare/repo/netdev-2.6 branch r8169-fix

1 files changed, 25 insertions, 6 deletions

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index c59507f8a76b..b3768d844747 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1585,8 +1585,8 @@ rtl8169_hw_start(struct net_device *dev)
 	RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
 	RTL_W8(EarlyTxThres, EarlyTxThld);
 
-	/* For gigabit rtl8169, MTU + header + CRC + VLAN */
-	RTL_W16(RxMaxSize, tp->rx_buf_sz);
+	/* Low hurts. Let's disable the filtering. */
+	RTL_W16(RxMaxSize, 16383);
 
 	/* Set Rx Config register */
 	i = rtl8169_rx_config |
@@ -2127,6 +2127,11 @@ rtl8169_tx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
 	}
 }
 
+static inline int rtl8169_fragmented_frame(u32 status)
+{
+	return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
+}
+
 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
 {
 	u32 opts1 = le32_to_cpu(desc->opts1);
@@ -2177,27 +2182,41 @@ rtl8169_rx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
 
 	while (rx_left > 0) {
 		unsigned int entry = cur_rx % NUM_RX_DESC;
+		struct RxDesc *desc = tp->RxDescArray + entry;
 		u32 status;
 
 		rmb();
-		status = le32_to_cpu(tp->RxDescArray[entry].opts1);
+		status = le32_to_cpu(desc->opts1);
 
 		if (status & DescOwn)
 			break;
 		if (status & RxRES) {
-			printk(KERN_INFO "%s: Rx ERROR!!!\n", dev->name);
+			printk(KERN_INFO "%s: Rx ERROR. status = %08x\n",
+			       dev->name, status);
 			tp->stats.rx_errors++;
 			if (status & (RxRWT | RxRUNT))
 				tp->stats.rx_length_errors++;
 			if (status & RxCRC)
 				tp->stats.rx_crc_errors++;
+			rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
 		} else {
-			struct RxDesc *desc = tp->RxDescArray + entry;
 			struct sk_buff *skb = tp->Rx_skbuff[entry];
 			int pkt_size = (status & 0x00001FFF) - 4;
 			void (*pci_action)(struct pci_dev *, dma_addr_t,
 				size_t, int) = pci_dma_sync_single_for_device;
 
+			/*
+			 * The driver does not support incoming fragmented
+			 * frames. They are seen as a symptom of over-mtu
+			 * sized frames.
+			 */
+			if (unlikely(rtl8169_fragmented_frame(status))) {
+				tp->stats.rx_dropped++;
+				tp->stats.rx_length_errors++;
+				rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
+				goto move_on;
+			}
+
 			rtl8169_rx_csum(skb, desc);
 			
 			pci_dma_sync_single_for_cpu(tp->pci_dev,
@@ -2224,7 +2243,7 @@ rtl8169_rx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
 			tp->stats.rx_bytes += pkt_size;
 			tp->stats.rx_packets++;
 		}
-		
+move_on:		
 		cur_rx++; 
 		rx_left--;
 	}