net/mlx4: fix UDP RSS related settings

Using RSS which takes into account UDP headers is controlled by
a module param, fix the setting of the HW RSS context to align
with that scheme. So far it was uncoditionally allowing hashing
on the UDP headers.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index d4bad5d..ce1bc57 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -840,7 +840,7 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
        struct mlx4_rss_context *rss_context;
        void *ptr;
        u8 rss_mask = (MLX4_RSS_IPV4 | MLX4_RSS_TCP_IPV4 | MLX4_RSS_IPV6 |
-               MLX4_RSS_TCP_IPV6 | MLX4_RSS_UDP_IPV4 | MLX4_RSS_UDP_IPV6);
+                       MLX4_RSS_TCP_IPV6);
        int i, qpn;
        int err = 0;
        int good_qps = 0;
@@ -883,14 +883,16 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
        rss_context = ptr;
        rss_context->base_qpn = cpu_to_be32(ilog2(priv->rx_ring_num) << 24 |
                                            (rss_map->base_qpn));
+       if (priv->mdev->profile.udp_rss) {
+               rss_mask |=  MLX4_RSS_UDP_IPV4 | MLX4_RSS_UDP_IPV6;
+               rss_context->base_qpn_udp = rss_context->default_qpn;
+       }
        rss_context->default_qpn = cpu_to_be32(rss_map->base_qpn);
        rss_context->flags = rss_mask;
        rss_context->hash_fn = MLX4_RSS_HASH_TOP;
        for (i = 0; i < 10; i++)
                rss_context->rss_key[i] = rsskey[i];
 
-       if (priv->mdev->profile.udp_rss)
-               rss_context->base_qpn_udp = rss_context->default_qpn;
        err = mlx4_qp_to_ready(mdev->dev, &priv->res.mtt, &context,
                               &rss_map->indir_qp, &rss_map->indir_state);
        if (err)