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mlx4_en: Using real number of rings as RSS map size

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There is no point in using more QPs then actual number of receive rings.
If the RSS function for two streams gives the same result modulo number
of rings, they will arrive to the same RX ring anyway.

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
2009-08-06 19:27:51 -07:00
committed by David S. Miller
parent a35ee541a6
commit b6b912e080
4 changed files with 16 additions and 41 deletions
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5
drivers/net/mlx4/en_main.c
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@ -218,8 +218,9 @@ static void *mlx4_en_add(struct mlx4_dev *dev)
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
mlx4_info(mdev, "Using %d tx rings for port:%d\n",
mdev->profile.prof[i].tx_ring_num, i);
mdev->profile.prof[i].rx_ring_num =
min_t(int, dev->caps.num_comp_vectors, MAX_RX_RINGS);
mdev->profile.prof[i].rx_ring_num = min_t(int,
roundup_pow_of_two(dev->caps.num_comp_vectors),
MAX_RX_RINGS);
mlx4_info(mdev, "Defaulting to %d rx rings for port:%d\n",
mdev->profile.prof[i].rx_ring_num, i);
}