net/mlx5: fix default queue number in RSS flow rule

The selection flags for the RX hash define how the received packets will
be distributed between multiple queues.
When creating a new TIR, the queue_num is set to 1 if none of the selection
flags is set.

Applied the same to the RSS desc before checking if it matches a cached
TIR object to save creating a new object every time.

Fixes: fabf8a37241c ("net/mlx5: fix shared RSS action release")
Cc: stable@dpdk.org
Signed-off-by: Lior Margalit <lmargalit@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 0538c85..7f07e3d 100644 (file)
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -10985,6 +10985,8 @@ flow_dv_hrxq_prepare(struct rte_eth_dev *dev,
        rss_desc->hash_fields = dev_flow->hash_fields;
        rss_desc->tunnel = !!(dh->layers & MLX5_FLOW_LAYER_TUNNEL);
        rss_desc->shared_rss = 0;
+       if (rss_desc->hash_fields == 0)
+               rss_desc->queue_num = 1;
        *hrxq_idx = mlx5_hrxq_get(dev, rss_desc);
        if (!*hrxq_idx)
                return NULL;