Revert "net/mlx5: Enable management PF initialization"

This reverts commit fe998a3c77b9f989a30a2a01fb00d3729a6d53a4.

Paul reports that it causes a regression with IB on CX4
and FW 12.18.1000. In addition I think that the concept
of "management PF" is not fully accepted and requires
a discussion.

Fixes: fe998a3c77b9 ("net/mlx5: Enable management PF initialization")
Reported-by: Paul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/all/CAHC9VhQ7A4+msL38WpbOMYjAqLp0EtOjeLh4Dc6SQtD6OUvCQg@mail.gmail.com/
Link: https://lore.kernel.org/r/20230413222547.56901-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/dev.c b/drivers/net/ethernet/mellanox/mlx5/core/dev.c
index 445fe30..2e78060 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/dev.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/dev.c
@@ -59,9 +59,6 @@ bool mlx5_eth_supported(struct mlx5_core_dev *dev)
        if (!IS_ENABLED(CONFIG_MLX5_CORE_EN))
                return false;
 
-       if (mlx5_core_is_management_pf(dev))
-               return false;
-
        if (MLX5_CAP_GEN(dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
                return false;
 
@@ -201,9 +198,6 @@ bool mlx5_rdma_supported(struct mlx5_core_dev *dev)
        if (!IS_ENABLED(CONFIG_MLX5_INFINIBAND))
                return false;
 
-       if (mlx5_core_is_management_pf(dev))
-               return false;
-
        if (dev->priv.flags & MLX5_PRIV_FLAGS_DISABLE_IB_ADEV)
                return false;
 

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ecpf.c b/drivers/net/ethernet/mellanox/mlx5/core/ecpf.c
index 7c9c4e4..d000236 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/ecpf.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/ecpf.c
@@ -75,10 +75,6 @@ int mlx5_ec_init(struct mlx5_core_dev *dev)
        if (!mlx5_core_is_ecpf(dev))
                return 0;
 
-       /* Management PF don't have a peer PF */
-       if (mlx5_core_is_management_pf(dev))
-               return 0;
-
        return mlx5_host_pf_init(dev);
 }
 
@@ -89,10 +85,6 @@ void mlx5_ec_cleanup(struct mlx5_core_dev *dev)
        if (!mlx5_core_is_ecpf(dev))
                return;
 
-       /* Management PF don't have a peer PF */
-       if (mlx5_core_is_management_pf(dev))
-               return;
-
        mlx5_host_pf_cleanup(dev);
 
        err = mlx5_wait_for_pages(dev, &dev->priv.page_counters[MLX5_HOST_PF]);

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 8bdf287..19fed51 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1488,7 +1488,7 @@ int mlx5_esw_sf_max_hpf_functions(struct mlx5_core_dev *dev, u16 *max_sfs, u16 *
        void *hca_caps;
        int err;
 
-       if (!mlx5_core_is_ecpf(dev) || mlx5_core_is_management_pf(dev)) {
+       if (!mlx5_core_is_ecpf(dev)) {
                *max_sfs = 0;
                return 0;
        }

diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index f33389b..7e225e4 100644 (file)
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -1211,11 +1211,6 @@ static inline bool mlx5_core_is_vf(const struct mlx5_core_dev *dev)
        return dev->coredev_type == MLX5_COREDEV_VF;
 }
 
-static inline bool mlx5_core_is_management_pf(const struct mlx5_core_dev *dev)
-{
-       return MLX5_CAP_GEN(dev, num_ports) == 1 && !MLX5_CAP_GEN(dev, native_port_num);
-}
-
 static inline bool mlx5_core_is_ecpf(const struct mlx5_core_dev *dev)
 {
        return dev->caps.embedded_cpu;