netdev - [PATCH net] net: b44: replace dev_kfree_skb_xxx by dev_consume_skb

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Date:   Tue, 29 Jan 2019 23:04:40 +0800
From:   Yang Wei <albin_yang@....com>
To:     netdev@...r.kernel.org
Cc:     michael.chan@...adcom.com, davem@...emloft.net,
        yang.wei9@....com.cn
Subject: [PATCH net] net: b44: replace dev_kfree_skb_xxx by dev_consume_skb_xxx for drop profiles

From: Yang Wei <yang.wei9@....com.cn>

The skb should be freed by dev_consume_skb_any() in b44_start_xmit()
when bounce_skb is used. The skb is be replaced by bounce_skb, so the
original skb should be consumed(not drop).

dev_consume_skb_irq() should be called in b44_tx() when skb xmit 
done. It makes drop profiles(dropwatch, perf) more friendly.

Signed-off-by: Yang Wei <yang.wei9@....com.cn>
---
 drivers/net/ethernet/broadcom/b44.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/b44.c b/drivers/net/ethernet/broadcom/b44.c
index f448089..97ab0dd 100644
--- a/drivers/net/ethernet/broadcom/b44.c
+++ b/drivers/net/ethernet/broadcom/b44.c
@@ -638,7 +638,7 @@ static void b44_tx(struct b44 *bp)
 		bytes_compl += skb->len;
 		pkts_compl++;
 
-		dev_kfree_skb_irq(skb);
+		dev_consume_skb_irq(skb);
 	}
 
 	netdev_completed_queue(bp->dev, pkts_compl, bytes_compl);
@@ -1012,7 +1012,7 @@ static netdev_tx_t b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		}
 
 		skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len);
-		dev_kfree_skb_any(skb);
+		dev_consume_skb_any(skb);
 		skb = bounce_skb;
 	}
 
-- 
2.7.4