vdpa/mlx5: fix event queue number query

Vdpa example failed on vq setup, the api to get event queue of specified
core failed.

Internal api devx_query_eqn expects index of event queue vectors, no
need to use cpu id. As the doorbell handling thread is per device, it's
sufficient to use default event queue.

This patch uses the default id(0) as event queue index.

Fixes: 8395927cdfaf ("vdpa/mlx5: prepare HW queues")
Cc: stable@dpdk.org
Signed-off-by: Xueming Li <xuemingl@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

diff --git a/drivers/vdpa/mlx5/mlx5_vdpa_event.c b/drivers/vdpa/mlx5/mlx5_vdpa_event.c
index 2080d61798ff1cf6d1f36adb90eee06ad3e20fc0..7dc1ac0fa9bf04a9bdbf094642795c8ed1ce991d 100644 (file)
--- a/drivers/vdpa/mlx5/mlx5_vdpa_event.c
+++ b/drivers/vdpa/mlx5/mlx5_vdpa_event.c
@@ -51,12 +51,9 @@ mlx5_vdpa_event_qp_global_release(struct mlx5_vdpa_priv *priv)
 static int
 mlx5_vdpa_event_qp_global_prepare(struct mlx5_vdpa_priv *priv)
 {
-       uint32_t lcore;
-
        if (priv->eventc)
                return 0;
-       lcore = (uint32_t)rte_lcore_to_cpu_id(-1);
-       if (mlx5_glue->devx_query_eqn(priv->ctx, lcore, &priv->eqn)) {
+       if (mlx5_glue->devx_query_eqn(priv->ctx, 0, &priv->eqn)) {
                rte_errno = errno;
                DRV_LOG(ERR, "Failed to query EQ number %d.", rte_errno);
                return -1;