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[net-next,10/15] i40e: Fix Flow Director raw_buf cleanup

Message ID 1474785769-54665-11-git-send-email-jeffrey.t.kirsher@intel.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Kirsher, Jeffrey T Sept. 25, 2016, 6:42 a.m. UTC 
From: Alexander Duyck <alexander.h.duyck@intel.com>

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>
---
 drivers/net/ethernet/intel/i40e/i40e_txrx.c   | 8 ++++----
 drivers/net/ethernet/intel/i40evf/i40e_txrx.c | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)
diff mbox

Patch

diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index 7ada05e..a2077be 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -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);
diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
index e3427eb..cb6b130 100644
--- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
@@ -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);