[PATCH 2/2] net/mlx5: skip DevX Tx memory allocation for Verbs

[Maayan Kashani <mkashani@nvidia.com>]

From: Banoth Saikumar <banoth.saikumar@oracle.com>

Previously, the mlx5 PMD attempted to allocate consecutive Tx memory
using DevX without checking whether DevX object operations are used.
This led to allocation failures on legacy or unsupported NICs.

Skip that allocation when the port uses Verbs object operations and let
the Verbs path handle memory allocation and registration.

Fixes: bbfab2eb2528 ("net/mlx5: allocate and release unique resources for Tx queues")
Cc: stable@dpdk.org

Signed-off-by: Banoth Saikumar <banoth.saikumar@oracle.com>
Acked-by: Dariusz Sosnowski <dsosnowski@nvidia.com>
Signed-off-by: Maayan Kashani <mkashani@nvidia.com>
---
 .mailmap                        | 1 +
 drivers/net/mlx5/mlx5_trigger.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/.mailmap b/.mailmap
index 6d9e262cfb3..d5cfb05b37e 100644
--- a/.mailmap
+++ b/.mailmap
@@ -190,6 +190,7 @@ Ayuj Verma <ayverma@marvell.com> <ayuj.verma@caviumnetworks.com>
 Balakrishna Bhamidipati <bbhamidipati@marvell.com>
 Balasubramanian Manoharan <balasubramanian.manoharan@caviumnetworks.com>
 Balazs Nemeth <bnemeth@redhat.com> <balazs.nemeth@intel.com>
+Banoth Saikumar <banoth.saikumar@oracle.com>
 Bao-Long Tran <longtb5@viettel.com.vn>
 Baoyuan Li <updoing@sina.com>
 Bar Neuman <bneuman@nvidia.com>
diff --git a/drivers/net/mlx5/mlx5_trigger.c b/drivers/net/mlx5/mlx5_trigger.c
index ef71b59fe9c..1dbde509d26 100644
--- a/drivers/net/mlx5/mlx5_trigger.c
+++ b/drivers/net/mlx5/mlx5_trigger.c
@@ -1201,7 +1201,7 @@ static int mlx5_dev_allocate_consec_tx_mem(struct rte_eth_dev *dev)
 	void *umem_buf = NULL;
 
 	/* Legacy per queue allocation, do nothing here. */
-	if (priv->sh->config.txq_mem_algn == 0)
+	if (priv->sh->config.txq_mem_algn == 0 || !mlx5_devx_obj_ops_en(priv))
 		return 0;
 	alignment = (size_t)1 << priv->sh->config.txq_mem_algn;
 	total_size = priv->consec_tx_mem.sq_total_size + priv->consec_tx_mem.cq_total_size;
-- 
2.21.0