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authorDavid S. Miller <davem@davemloft.net>2010-01-23 00:31:06 -0800
committerDavid S. Miller <davem@davemloft.net>2010-01-23 00:31:06 -0800
commit51c24aaacaea90c8e87f1dec75a2ac7622b593f8 (patch)
tree9f54936c87764bef75e97395cb56b7d1e0df24c6 /drivers/net/e1000
parent4276e47e2d1c85a2477caf0d22b91c4f2377fba8 (diff)
parent6be325719b3e54624397e413efd4b33a997e55a3 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Diffstat (limited to 'drivers/net/e1000')
-rw-r--r--drivers/net/e1000/e1000.h2
-rw-r--r--drivers/net/e1000/e1000_main.c23
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;
}