Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

2 files changed, 18 insertions, 7 deletions

diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h
index 2a567df3ea71..e8932db7ee77 100644
--- a/drivers/net/e1000/e1000.h
+++ b/drivers/net/e1000/e1000.h
@@ -326,6 +326,8 @@ struct e1000_adapter {
         /* for ioport free */
         int bars;
         int need_ioport;
+
+        bool discarding;
 };
 
 enum e1000_state_t {
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 9ec7480be1d8..87f575ca427d 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2802,13 +2802,13 @@ static int e1000_tx_map(struct e1000_adapter *adapter,
 dma_error:
         dev_err(&pdev->dev, "TX DMA map failed\n");
         buffer_info->dma = 0;
-        count--;
-
-        while (count >= 0) {
+        if (count)
                 count--;
-                i--;
-                if (i < 0)
+
+        while (count--) {
+                if (i==0)
                         i += tx_ring->count;
+                i--;
                 buffer_info = &tx_ring->buffer_info[i];
                 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
         }
@@ -3850,13 +3850,22 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
 
                 length = le16_to_cpu(rx_desc->length);
                 /* !EOP means multiple descriptors were used to store a single
-                 * packet, also make sure the frame isn't just CRC only */
-                if (unlikely(!(status & E1000_RXD_STAT_EOP) || (length <= 4))) {
+                 * packet, if thats the case we need to toss it.  In fact, we
+                 * to toss every packet with the EOP bit clear and the next
+                 * frame that _does_ have the EOP bit set, as it is by
+                 * definition only a frame fragment
+                 */
+                if (unlikely(!(status & E1000_RXD_STAT_EOP)))
+                        adapter->discarding = true;
+
+                if (adapter->discarding) {
                         /* All receives must fit into a single buffer */
                         E1000_DBG("%s: Receive packet consumed multiple"
                                   " buffers\n", netdev->name);
                         /* recycle */
                         buffer_info->skb = skb;
+                        if (status & E1000_RXD_STAT_EOP)
+                                adapter->discarding = false;
                         goto next_desc;
                 }