[PATCH net-next v2] net/mlx5e: Fix error handling in RQ memory model registration

From: Fushuai Wang
Date: Thu Jun 26 2025 - 01:32:15 EST


Currently when xdp_rxq_info_reg_mem_model() fails in the XSK path, the
error handling incorrectly jumps to err_destroy_page_pool. While this
may not cause errors, we should make it jump to the correct location.

Signed-off-by: Fushuai Wang <wangfushuai@xxxxxxxxx>
Reviewed-by: Zhu Yanjun <yanjun.zhu@xxxxxxxxx>
Acked-by: Dragos Tatulea <dtatulea@xxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index dca5ca51a470..e8e5b347f9b2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -952,6 +952,8 @@ static int mlx5e_alloc_rq(struct mlx5e_params *params,
if (xsk) {
err = xdp_rxq_info_reg_mem_model(&rq->xdp_rxq,
MEM_TYPE_XSK_BUFF_POOL, NULL);
+ if (err)
+ goto err_free_by_rq_type;
xsk_pool_set_rxq_info(rq->xsk_pool, &rq->xdp_rxq);
} else {
/* Create a page_pool and register it with rxq */
@@ -985,12 +987,13 @@ static int mlx5e_alloc_rq(struct mlx5e_params *params,
}
if (!rq->hd_page_pool)
rq->hd_page_pool = rq->page_pool;
- if (xdp_rxq_info_is_reg(&rq->xdp_rxq))
+ if (xdp_rxq_info_is_reg(&rq->xdp_rxq)) {
err = xdp_rxq_info_reg_mem_model(&rq->xdp_rxq,
MEM_TYPE_PAGE_POOL, rq->page_pool);
+ if (err)
+ goto err_destroy_page_pool;
+ }
}
- if (err)
- goto err_destroy_page_pool;

for (i = 0; i < wq_sz; i++) {
if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) {
--
2.36.1