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author | Paul Gortmaker <paul.gortmaker@windriver.com> | 2012-01-06 13:51:03 -0500 |
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committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2012-03-15 15:37:48 -0400 |
commit | d8a0f1b0af67679bba886784de10d8c21acc4e0e (patch) | |
tree | c22a927a5b2545e7ab0e4bfcfeb34b27afb56f01 /drivers/net/ethernet/freescale | |
parent | cdf485be3a63d1f34293740fb726088c6840ceea (diff) | |
download | op-kernel-dev-d8a0f1b0af67679bba886784de10d8c21acc4e0e.zip op-kernel-dev-d8a0f1b0af67679bba886784de10d8c21acc4e0e.tar.gz |
gianfar: Add support for byte queue limits.
Add support for byte queue limits (BQL), based on the similar
modifications made to intel/igb/igb_main.c from Eric Dumazet
in commit bdbc063129e811264cd6c311d8c2d9b95de01231
"igb: Add support for byte queue limits."
A local variable for tx_queue->qindex was introduced in
gfar_clean_tx_ring, since it is now used often enough to warrant it,
and it cleans up the readability somewhat as well.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'drivers/net/ethernet/freescale')
-rw-r--r-- | drivers/net/ethernet/freescale/gianfar.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index adb0ae4..a4c934b 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -1755,9 +1755,12 @@ static void free_skb_resources(struct gfar_private *priv) /* Go through all the buffer descriptors and free their data buffers */ for (i = 0; i < priv->num_tx_queues; i++) { + struct netdev_queue *txq; tx_queue = priv->tx_queue[i]; + txq = netdev_get_tx_queue(tx_queue->dev, tx_queue->qindex); if(tx_queue->tx_skbuff) free_skb_tx_queue(tx_queue); + netdev_tx_reset_queue(txq); } for (i = 0; i < priv->num_rx_queues; i++) { @@ -2217,6 +2220,8 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | skb_headlen(skb); } + netdev_tx_sent_queue(txq, skb->len); + /* * We can work in parallel with gfar_clean_tx_ring(), except * when modifying num_txbdfree. Note that we didn't grab the lock @@ -2460,6 +2465,7 @@ static void gfar_align_skb(struct sk_buff *skb) static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) { struct net_device *dev = tx_queue->dev; + struct netdev_queue *txq; struct gfar_private *priv = netdev_priv(dev); struct gfar_priv_rx_q *rx_queue = NULL; struct txbd8 *bdp, *next = NULL; @@ -2471,10 +2477,13 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) int frags = 0, nr_txbds = 0; int i; int howmany = 0; + int tqi = tx_queue->qindex; + unsigned int bytes_sent = 0; u32 lstatus; size_t buflen; - rx_queue = priv->rx_queue[tx_queue->qindex]; + rx_queue = priv->rx_queue[tqi]; + txq = netdev_get_tx_queue(dev, tqi); bdp = tx_queue->dirty_tx; skb_dirtytx = tx_queue->skb_dirtytx; @@ -2533,6 +2542,8 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) bdp = next_txbd(bdp, base, tx_ring_size); } + bytes_sent += skb->len; + /* * If there's room in the queue (limit it to rx_buffer_size) * we add this skb back into the pool, if it's the right size @@ -2557,13 +2568,15 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) } /* If we freed a buffer, we can restart transmission, if necessary */ - if (__netif_subqueue_stopped(dev, tx_queue->qindex) && tx_queue->num_txbdfree) - netif_wake_subqueue(dev, tx_queue->qindex); + if (__netif_subqueue_stopped(dev, tqi) && tx_queue->num_txbdfree) + netif_wake_subqueue(dev, tqi); /* Update dirty indicators */ tx_queue->skb_dirtytx = skb_dirtytx; tx_queue->dirty_tx = bdp; + netdev_tx_completed_queue(txq, howmany, bytes_sent); + return howmany; } |