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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-04-10 11:15:23 +1000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-04-10 16:03:57 -0400 |
| commit | 42c2d19786e538dc33d365d3439eec00545651cc (patch) | |
| tree | 6f41642d8a6bfbcd502aaffd06859c6e08e1c235 /drivers/net | |
| parent | 4a2712b2f0b6895f37c657e099936679d2bc7b6e (diff) | |
| download | linux-42c2d19786e538dc33d365d3439eec00545651cc.tar.gz linux-42c2d19786e538dc33d365d3439eec00545651cc.tar.bz2 linux-42c2d19786e538dc33d365d3439eec00545651cc.zip | |
ftgmac100: Split tx packet freeing from ftgmac100_tx_complete_packet()
This moves the packet freeing to a separate function
which is also used by ftgmac100_free_buffers() and will
be used more in the error path of fragmented sends.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/faraday/ftgmac100.c | 38 |
1 files changed, 21 insertions, 17 deletions
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c index 60f285e444f8..802f5e73006c 100644 --- a/drivers/net/ethernet/faraday/ftgmac100.c +++ b/drivers/net/ethernet/faraday/ftgmac100.c @@ -563,13 +563,29 @@ static bool ftgmac100_tx_buf_cleanable(struct ftgmac100 *priv) return priv->tx_pointer != priv->tx_clean_pointer; } +static void ftgmac100_free_tx_packet(struct ftgmac100 *priv, + unsigned int pointer, + struct sk_buff *skb, + struct ftgmac100_txdes *txdes) +{ + dma_addr_t map; + + map = ftgmac100_txdes_get_dma_addr(txdes); + + dma_unmap_single(priv->dev, map, skb_headlen(skb), DMA_TO_DEVICE); + + dev_kfree_skb(skb); + priv->tx_skbs[pointer] = NULL; + + ftgmac100_txdes_reset(priv, txdes); +} + static bool ftgmac100_tx_complete_packet(struct ftgmac100 *priv) { struct net_device *netdev = priv->netdev; struct ftgmac100_txdes *txdes; - unsigned int pointer; struct sk_buff *skb; - dma_addr_t map; + unsigned int pointer; pointer = priv->tx_clean_pointer; txdes = &priv->descs->txdes[pointer]; @@ -578,17 +594,9 @@ static bool ftgmac100_tx_complete_packet(struct ftgmac100 *priv) return false; skb = priv->tx_skbs[pointer]; - map = ftgmac100_txdes_get_dma_addr(txdes); - netdev->stats.tx_packets++; netdev->stats.tx_bytes += skb->len; - - dma_unmap_single(priv->dev, map, skb_headlen(skb), DMA_TO_DEVICE); - - dev_kfree_skb(skb); - priv->tx_skbs[pointer] = NULL; - - ftgmac100_txdes_reset(priv, txdes); + ftgmac100_free_tx_packet(priv, pointer, skb, txdes); priv->tx_clean_pointer = ftgmac100_next_tx_pointer(pointer); @@ -729,13 +737,9 @@ static void ftgmac100_free_buffers(struct ftgmac100 *priv) for (i = 0; i < TX_QUEUE_ENTRIES; i++) { struct ftgmac100_txdes *txdes = &priv->descs->txdes[i]; struct sk_buff *skb = priv->tx_skbs[i]; - dma_addr_t map = ftgmac100_txdes_get_dma_addr(txdes); - - if (!skb) - continue; - dma_unmap_single(priv->dev, map, skb_headlen(skb), DMA_TO_DEVICE); - kfree_skb(skb); + if (skb) + ftgmac100_free_tx_packet(priv, i, skb, txdes); } } |