openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

i40e: Fix Flow Director raw_buf cleanup 

The Tx cleanup flow was incorrectly assuming it could check for the flow
director bits after it had unmapped the buffer.  However in this case it
results in us trying to free a raw_buf as though it is an sk_buff.

To fix this I am moving up the flag test for the FD_SB bit so that when
find a non-NULL skb or raw_buf value we then check the flag and use the
appropriate call to free the buffer.

Change-ID: I6284034ba1ea87c9922e56f6eb3181f7f09bddde
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2016-09-12 14:18:39 -07:00 committed by Jeff Kirsher
parent f19a973f46
commit 64bfd68eae
2 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/ethernet/intel/i40e/i40e_txrx.c
View File

@ -532,7 +532,10 @@ static void i40e_unmap_and_free_tx_resource(struct i40e_ring *ring,
struct i40e_tx_buffer *tx_buffer)
{
if (tx_buffer->skb) {
dev_kfree_skb_any(tx_buffer->skb);
if (tx_buffer->tx_flags & I40E_TX_FLAGS_FD_SB)
kfree(tx_buffer->raw_buf);
else
dev_kfree_skb_any(tx_buffer->skb);
if (dma_unmap_len(tx_buffer, len))
dma_unmap_single(ring->dev,
dma_unmap_addr(tx_buffer, dma),
@ -545,9 +548,6 @@ static void i40e_unmap_and_free_tx_resource(struct i40e_ring *ring,
DMA_TO_DEVICE);
}
if (tx_buffer->tx_flags & I40E_TX_FLAGS_FD_SB)
kfree(tx_buffer->raw_buf);
tx_buffer->next_to_watch = NULL;
tx_buffer->skb = NULL;
dma_unmap_len_set(tx_buffer, len, 0);

8
drivers/net/ethernet/intel/i40evf/i40e_txrx.c
View File

@ -51,7 +51,10 @@ static void i40e_unmap_and_free_tx_resource(struct i40e_ring *ring,
struct i40e_tx_buffer *tx_buffer)
{
if (tx_buffer->skb) {
dev_kfree_skb_any(tx_buffer->skb);
if (tx_buffer->tx_flags & I40E_TX_FLAGS_FD_SB)
kfree(tx_buffer->raw_buf);
else
dev_kfree_skb_any(tx_buffer->skb);
if (dma_unmap_len(tx_buffer, len))
dma_unmap_single(ring->dev,
dma_unmap_addr(tx_buffer, dma),
@ -64,9 +67,6 @@ static void i40e_unmap_and_free_tx_resource(struct i40e_ring *ring,
DMA_TO_DEVICE);
}
if (tx_buffer->tx_flags & I40E_TX_FLAGS_FD_SB)
kfree(tx_buffer->raw_buf);
tx_buffer->next_to_watch = NULL;
tx_buffer->skb = NULL;
dma_unmap_len_set(tx_buffer, len, 0);