net/mlx5: Introduce generic helper for PF SFs info

Introduce mlx5_esw_sf_max_pf_functions() that queries a PF's max_num_sf
and sf_base_id using mlx5_vport_get_other_func_general_cap(), which
supports both function_id and vhca_id based addressing.

Refactor mlx5_esw_sf_max_hpf_functions() into a thin wrapper that adds
the host PF precondition checks and calls the new generic helper. Remove
mlx5_query_hca_cap_host_pf() as it is not used anymore.

This prepares for querying SFs info of Satellite PFs.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-3-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 17 insertions, 21 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 921ef53dc074..f7fa5ef74201 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -2044,37 +2044,20 @@ void mlx5_eswitch_disable(struct mlx5_eswitch *esw)
 	mlx5_lag_enable_change(esw->dev);
 }
 
-static int mlx5_query_hca_cap_host_pf(struct mlx5_core_dev *dev, void *out)
-{
-	u16 opmod = (MLX5_CAP_GENERAL << 1) | (HCA_CAP_OPMOD_GET_MAX & 0x01);
-	u8 in[MLX5_ST_SZ_BYTES(query_hca_cap_in)] = {};
-
-	MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP);
-	MLX5_SET(query_hca_cap_in, in, op_mod, opmod);
-	MLX5_SET(query_hca_cap_in, in, function_id, MLX5_VPORT_HOST_PF);
-	MLX5_SET(query_hca_cap_in, in, other_function, true);
-	return mlx5_cmd_exec_inout(dev, query_hca_cap, in, out);
-}
-
-int mlx5_esw_sf_max_hpf_functions(struct mlx5_core_dev *dev, u16 *max_sfs, u16 *sf_base_id)
-
+static int mlx5_esw_sf_max_pf_functions(struct mlx5_core_dev *dev,
+					u16 vport_num, u16 *max_sfs,
+					u16 *sf_base_id)
 {
 	int query_out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
 	void *query_ctx;
 	void *hca_caps;
 	int err;
 
-	if (!mlx5_core_is_ecpf(dev) ||
-	    !mlx5_esw_host_functions_enabled(dev)) {
-		*max_sfs = 0;
-		return 0;
-	}
-
 	query_ctx = kzalloc(query_out_sz, GFP_KERNEL);
 	if (!query_ctx)
 		return -ENOMEM;
 
-	err = mlx5_query_hca_cap_host_pf(dev, query_ctx);
+	err = mlx5_vport_get_other_func_general_cap(dev, vport_num, query_ctx);
 	if (err)
 		goto out_free;
 
@@ -2087,6 +2070,19 @@ out_free:
 	return err;
 }
 
+int mlx5_esw_sf_max_hpf_functions(struct mlx5_core_dev *dev, u16 *max_sfs,
+				  u16 *sf_base_id)
+{
+	if (!mlx5_core_is_ecpf(dev) ||
+	    !mlx5_esw_host_functions_enabled(dev)) {
+		*max_sfs = 0;
+		return 0;
+	}
+
+	return mlx5_esw_sf_max_pf_functions(dev, MLX5_VPORT_HOST_PF, max_sfs,
+					    sf_base_id);
+}
+
 int mlx5_esw_vport_alloc(struct mlx5_eswitch *esw, int index, u16 vport_num)
 {
 	struct mlx5_vport *vport;