[dpdk-dev] [PATCH 08/11] net/mlx5: fix DevX Rx queue memory alignment

[Matan Azrad]

The alignment requested by the FW for WQ buffer allocation is 512.

Change it from cache line alignment to 512.

Fixes: dc9ceff73c99 ("net/mlx5: create advanced RxQ via DevX")

Signed-off-by: Matan Azrad <matan at mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo at mellanox.com>
---
 drivers/net/mlx5/mlx5_prm.h | 3 +++
 drivers/net/mlx5/mlx5_rxq.c | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_prm.h b/drivers/net/mlx5/mlx5_prm.h
index 6ea6345..42ead7d 100644
--- a/drivers/net/mlx5/mlx5_prm.h
+++ b/drivers/net/mlx5/mlx5_prm.h
@@ -240,6 +240,9 @@
 /* The maximum log value of segments per RQ WQE. */
 #define MLX5_MAX_LOG_RQ_SEGS 5u
 
+/* The alignment needed for WQ buffer. */
+#define MLX5_WQE_BUF_ALIGNMENT 512
+
 /* Completion mode. */
 enum mlx5_completion_mode {
 	MLX5_COMP_ONLY_ERR = 0x0,
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index ad5b0a9..e96bb1e 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -1126,7 +1126,7 @@
 	/* Calculate and allocate WQ memory space. */
 	wqe_size = 1 << log_wqe_size; /* round up power of two.*/
 	wq_size = wqe_n * wqe_size;
-	buf = rte_calloc_socket(__func__, 1, wq_size, RTE_CACHE_LINE_SIZE,
+	buf = rte_calloc_socket(__func__, 1, wq_size, MLX5_WQE_BUF_ALIGNMENT,
 				rxq_ctrl->socket);
 	if (!buf)
 		return NULL;
-- 
1.8.3.1