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bnx2x: Support for byte queue limits 

Changes to bnx2x to use byte queue limits.

Signed-off-by: Tom Herbert <therbert@google.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2011-11-28 16:33:37 +00:00 committed by David S. Miller
parent 298376d3e8
commit 2df1a70aaf
1 changed files with 22 additions and 4 deletions
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26
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
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@ -102,7 +102,8 @@ int load_count[2][3] = { {0} }; /* per-path: 0-common, 1-port0, 2-port1 */
* return idx of last bd freed
*/
static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata,
u16 idx)
u16 idx, unsigned int *pkts_compl,
unsigned int *bytes_compl)
{
struct sw_tx_bd *tx_buf = &txdata->tx_buf_ring[idx];
struct eth_tx_start_bd *tx_start_bd;
@ -159,6 +160,10 @@ static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata,
/* release skb */
WARN_ON(!skb);
if (skb) {
(*pkts_compl)++;
(*bytes_compl) += skb->len;
}
dev_kfree_skb_any(skb);
tx_buf->first_bd = 0;
tx_buf->skb = NULL;
@ -170,6 +175,7 @@ int bnx2x_tx_int(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata)
{
struct netdev_queue *txq;
u16 hw_cons, sw_cons, bd_cons = txdata->tx_bd_cons;
unsigned int pkts_compl = 0, bytes_compl = 0;
#ifdef BNX2X_STOP_ON_ERROR
if (unlikely(bp->panic))
@ -189,10 +195,14 @@ int bnx2x_tx_int(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata)
" pkt_cons %u\n",
txdata->txq_index, hw_cons, sw_cons, pkt_cons);
bd_cons = bnx2x_free_tx_pkt(bp, txdata, pkt_cons);
bd_cons = bnx2x_free_tx_pkt(bp, txdata, pkt_cons,
&pkts_compl, &bytes_compl);
sw_cons++;
}
netdev_tx_completed_queue(txq, pkts_compl, bytes_compl);
txdata->tx_pkt_cons = sw_cons;
txdata->tx_bd_cons = bd_cons;
@ -1077,14 +1087,18 @@ static void bnx2x_free_tx_skbs(struct bnx2x *bp)
struct bnx2x_fastpath *fp = &bp->fp[i];
for_each_cos_in_tx_queue(fp, cos) {
struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
unsigned pkts_compl = 0, bytes_compl = 0;
u16 sw_prod = txdata->tx_pkt_prod;
u16 sw_cons = txdata->tx_pkt_cons;
while (sw_cons != sw_prod) {
bnx2x_free_tx_pkt(bp, txdata, TX_BD(sw_cons));
bnx2x_free_tx_pkt(bp, txdata, TX_BD(sw_cons),
&pkts_compl, &bytes_compl);
sw_cons++;
}
netdev_tx_reset_queue(
netdev_get_tx_queue(bp->dev, txdata->txq_index));
}
}
}
@ -2788,6 +2802,7 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
mapping = skb_frag_dma_map(&bp->pdev->dev, frag, 0,
skb_frag_size(frag), DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
unsigned int pkts_compl = 0, bytes_compl = 0;
DP(NETIF_MSG_TX_QUEUED, "Unable to map page - "
"dropping packet...\n");
@ -2799,7 +2814,8 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
*/
first_bd->nbd = cpu_to_le16(nbd);
bnx2x_free_tx_pkt(bp, txdata,
TX_BD(txdata->tx_pkt_prod));
TX_BD(txdata->tx_pkt_prod),
&pkts_compl, &bytes_compl);
return NETDEV_TX_OK;
}
@ -2860,6 +2876,8 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
pbd_e2->parsing_data);
DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod);
netdev_tx_sent_queue(txq, skb->len);
txdata->tx_pkt_prod++;
/*
* Make sure that the BD data is updated before updating the producer