[dpdk-dev] [PATCH v3 09/15] net/mlx5: check max Verbs port number
From: Xueming Li <hidden>
Date: 2021-07-19 02:55:56
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Verbs API doesn't support Device port number larger than 255 by design. Adds check and fails probing with proper error log. Signed-off-by: Xueming Li <redacted> --- drivers/net/mlx5/linux/mlx5_os.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index f041f9054f..db44169b84 100644
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c@@ -1294,6 +1294,12 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev, config->dv_flow_en = 0; } #endif + if (spawn->max_port > UINT8_MAX) { + /* Verbs can't support ports larger than 255 by design. */ + DRV_LOG(ERR, "can't support IB ports > UINT8_MAX"); + err = EINVAL; + goto error; + } config->ind_table_max_size = sh->device_attr.max_rwq_indirection_table_size; /*
--
2.25.1