net/mlx5: Check FW limitations on log_max_qp before setting it

When setting HCA capabilities, set log_max_qp to be the minimum
between the selected profile's value and the HCA limitation.

Fixes: 938fe83c8dcb ('net/mlx5_core: New device capabilities...')
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 54e5a786f191..23c12f1aaa39 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -503,6 +503,13 @@ static int handle_hca_cap(struct mlx5_core_dev *dev)
         MLX5_SET(cmd_hca_cap, set_hca_cap, pkey_table_size,
                  to_fw_pkey_sz(dev, 128));
 
+        /* Check log_max_qp from HCA caps to set in current profile */
+        if (MLX5_CAP_GEN_MAX(dev, log_max_qp) < profile[prof_sel].log_max_qp) {
+                mlx5_core_warn(dev, "log_max_qp value in current profile is %d, changing it to HCA capability limit (%d)\n",
+                               profile[prof_sel].log_max_qp,
+                               MLX5_CAP_GEN_MAX(dev, log_max_qp));
+                profile[prof_sel].log_max_qp = MLX5_CAP_GEN_MAX(dev, log_max_qp);
+        }
         if (prof->mask & MLX5_PROF_MASK_QP_SIZE)
                 MLX5_SET(cmd_hca_cap, set_hca_cap, log_max_qp,
                          prof->log_max_qp);