diff options
| author | Yevgeny Petrilin <yevgenyp@mellanox.co.il> | 2012-01-17 22:54:55 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-01-18 16:07:34 -0500 |
| commit | 93d3e3678f23109363cd6f99f2944d2cda616b23 (patch) | |
| tree | bb03e8801b25f03d3e658e9dc3108101f7e94fc1 /drivers/net/ethernet/mellanox/mlx4/en_rx.c | |
| parent | d00a9dd21bdf7908b70866794c8313ee8a5abd5c (diff) | |
mlx4_en: set number of rx rings used by RSS using ethtool
Value must be a power of 2 due to HW limitation.
Driver supports only 'equal' mode in ethtool and can't be set by using weights.
Signed-off-by: Amir Vadai <amirv@mellanox.co.il>
Reviewed-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/en_rx.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_rx.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index e8d6ad2dce0a..971d4b6b8dfe 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -853,6 +853,7 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv) struct mlx4_en_rss_map *rss_map = &priv->rss_map; struct mlx4_qp_context context; struct mlx4_rss_context *rss_context; + int rss_rings; void *ptr; u8 rss_mask = (MLX4_RSS_IPV4 | MLX4_RSS_TCP_IPV4 | MLX4_RSS_IPV6 | MLX4_RSS_TCP_IPV6); @@ -893,10 +894,15 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv) mlx4_en_fill_qp_context(priv, 0, 0, 0, 1, priv->base_qpn, priv->rx_ring[0].cqn, &context); + if (!priv->prof->rss_rings || priv->prof->rss_rings > priv->rx_ring_num) + rss_rings = priv->rx_ring_num; + else + rss_rings = priv->prof->rss_rings; + ptr = ((void *) &context) + offsetof(struct mlx4_qp_context, pri_path) + MLX4_RSS_OFFSET_IN_QPC_PRI_PATH; rss_context = ptr; - rss_context->base_qpn = cpu_to_be32(ilog2(priv->rx_ring_num) << 24 | + rss_context->base_qpn = cpu_to_be32(ilog2(rss_rings) << 24 | (rss_map->base_qpn)); rss_context->default_qpn = cpu_to_be32(rss_map->base_qpn); if (priv->mdev->profile.udp_rss) { |