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mlx4_en: multiqueue support

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By default the driver opens 8 TX queues (defined by MLX4_EN_NUM_TX_RINGS).
If the driver is configured to support Per Priority Flow Control, we open
8 additional TX rings.
dev->real_num_tx_queues is always set to be MLX4_EN_NUM_TX_RINGS.
The mlx4_en_select_queue() function uses standard hashing (skb_tx_hash)
in case that PPFC is not supported or the skb contain a vlan tag,
otherwise the queue is selected according to vlan priority.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yevgeny Petrilin
2009-06-01 23:24:07 +00:00
committed by David S. Miller
parent 3db36fb2c8
commit f813cad836
4 changed files with 28 additions and 71 deletions
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9
drivers/net/mlx4/en_main.c
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@@ -93,13 +93,8 @@ static int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
params->prof[i].tx_ppp = pfctx;
params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE;
params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE;
}
if (pfcrx || pfctx) {
params->prof[1].tx_ring_num = MLX4_EN_TX_RING_NUM;
params->prof[2].tx_ring_num = MLX4_EN_TX_RING_NUM;
} else {
params->prof[1].tx_ring_num = 1;
params->prof[2].tx_ring_num = 1;
params->prof[i].tx_ring_num = MLX4_EN_NUM_TX_RINGS +
(!!pfcrx) * MLX4_EN_NUM_PPP_RINGS;
}
return 0;