From 5c632cc352e1ca7995e9ccea9a11f7f9a53b1717 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 1 Jun 2023 13:59:52 +0200 Subject: [PATCH] net/mlx5: Relax mlx5_devlink_eswitch_get() return value checking If called from port ops, it is not needed to perform the checks in mlx5_devlink_eswitch_get(). The reason is devlink port would not be registered if the checks are not true. Introduce relaxed version mlx5_devlink_eswitch_nocheck_get() and use it in port ops. Signed-off-by: Jiri Pirko Reviewed-by: Shay Drory Signed-off-by: Saeed Mahameed --- .../net/ethernet/mellanox/mlx5/core/eswitch.c | 21 ++++++++-- .../net/ethernet/mellanox/mlx5/core/eswitch.h | 6 ++- .../mellanox/mlx5/core/eswitch_offloads.c | 39 ++++--------------- 3 files changed, 29 insertions(+), 37 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c index 5368b33fde638..db1c2a0763643 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c @@ -77,18 +77,31 @@ static int mlx5_eswitch_check(const struct mlx5_core_dev *dev) return 0; } -struct mlx5_eswitch *mlx5_devlink_eswitch_get(struct devlink *devlink) +static struct mlx5_eswitch *__mlx5_devlink_eswitch_get(struct devlink *devlink, bool check) { struct mlx5_core_dev *dev = devlink_priv(devlink); int err; - err = mlx5_eswitch_check(dev); - if (err) - return ERR_PTR(err); + if (check) { + err = mlx5_eswitch_check(dev); + if (err) + return ERR_PTR(err); + } return dev->priv.eswitch; } +struct mlx5_eswitch *__must_check +mlx5_devlink_eswitch_get(struct devlink *devlink) +{ + return __mlx5_devlink_eswitch_get(devlink, true); +} + +struct mlx5_eswitch *mlx5_devlink_eswitch_nocheck_get(struct devlink *devlink) +{ + return __mlx5_devlink_eswitch_get(devlink, false); +} + struct mlx5_vport *__must_check mlx5_eswitch_get_vport(struct mlx5_eswitch *esw, u16 vport_num) { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h index 8d03d4fe6eec2..9f94c3d6d6e55 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h @@ -679,7 +679,11 @@ void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw); MLX5_CAP_GEN_2((esw->dev), ec_vf_vport_base) +\ (last) - 1) -struct mlx5_eswitch *mlx5_devlink_eswitch_get(struct devlink *devlink); +struct mlx5_eswitch *__must_check +mlx5_devlink_eswitch_get(struct devlink *devlink); + +struct mlx5_eswitch *mlx5_devlink_eswitch_nocheck_get(struct devlink *devlink); + struct mlx5_vport *__must_check mlx5_eswitch_get_vport(struct mlx5_eswitch *esw, u16 vport_num); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c index 87cc6ad2e17fd..23b562f07c68d 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c @@ -3634,7 +3634,7 @@ static bool esw_offloads_devlink_ns_eq_netdev_ns(struct devlink *devlink) struct net *devl_net, *netdev_net; struct mlx5_eswitch *esw; - esw = mlx5_devlink_eswitch_get(devlink); + esw = mlx5_devlink_eswitch_nocheck_get(devlink); netdev_net = dev_net(esw->dev->mlx5e_res.uplink_netdev); devl_net = devlink_net(devlink); @@ -4222,13 +4222,10 @@ int mlx5_devlink_port_fn_hw_addr_get(struct devlink_port *port, u8 *hw_addr, int *hw_addr_len, struct netlink_ext_ack *extack) { - struct mlx5_eswitch *esw; + struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink); struct mlx5_vport *vport; u16 vport_num; - esw = mlx5_devlink_eswitch_get(port->devlink); - if (IS_ERR(esw)) - return PTR_ERR(esw); vport_num = mlx5_esw_devlink_port_index_to_vport_num(port->index); @@ -4249,15 +4246,9 @@ int mlx5_devlink_port_fn_hw_addr_set(struct devlink_port *port, const u8 *hw_addr, int hw_addr_len, struct netlink_ext_ack *extack) { - struct mlx5_eswitch *esw; + struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink); u16 vport_num; - esw = mlx5_devlink_eswitch_get(port->devlink); - if (IS_ERR(esw)) { - NL_SET_ERR_MSG_MOD(extack, "Eswitch doesn't support set hw_addr"); - return PTR_ERR(esw); - } - vport_num = mlx5_esw_devlink_port_index_to_vport_num(port->index); return mlx5_eswitch_set_vport_mac(esw, vport_num, hw_addr); } @@ -4277,13 +4268,9 @@ mlx5_devlink_port_fn_get_vport(struct devlink_port *port, struct mlx5_eswitch *e int mlx5_devlink_port_fn_migratable_get(struct devlink_port *port, bool *is_enabled, struct netlink_ext_ack *extack) { - struct mlx5_eswitch *esw; + struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink); struct mlx5_vport *vport; - esw = mlx5_devlink_eswitch_get(port->devlink); - if (IS_ERR(esw)) - return PTR_ERR(esw); - if (!MLX5_CAP_GEN(esw->dev, migration)) { NL_SET_ERR_MSG_MOD(extack, "Device doesn't support migration"); return -EOPNOTSUPP; @@ -4304,17 +4291,13 @@ int mlx5_devlink_port_fn_migratable_get(struct devlink_port *port, bool *is_enab int mlx5_devlink_port_fn_migratable_set(struct devlink_port *port, bool enable, struct netlink_ext_ack *extack) { + struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink); int query_out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out); - struct mlx5_eswitch *esw; struct mlx5_vport *vport; void *query_ctx; void *hca_caps; int err; - esw = mlx5_devlink_eswitch_get(port->devlink); - if (IS_ERR(esw)) - return PTR_ERR(esw); - if (!MLX5_CAP_GEN(esw->dev, migration)) { NL_SET_ERR_MSG_MOD(extack, "Device doesn't support migration"); return -EOPNOTSUPP; @@ -4368,13 +4351,9 @@ out: int mlx5_devlink_port_fn_roce_get(struct devlink_port *port, bool *is_enabled, struct netlink_ext_ack *extack) { - struct mlx5_eswitch *esw; + struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink); struct mlx5_vport *vport; - esw = mlx5_devlink_eswitch_get(port->devlink); - if (IS_ERR(esw)) - return PTR_ERR(esw); - vport = mlx5_devlink_port_fn_get_vport(port, esw); if (IS_ERR(vport)) { NL_SET_ERR_MSG_MOD(extack, "Invalid port"); @@ -4390,18 +4369,14 @@ int mlx5_devlink_port_fn_roce_get(struct devlink_port *port, bool *is_enabled, int mlx5_devlink_port_fn_roce_set(struct devlink_port *port, bool enable, struct netlink_ext_ack *extack) { + struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink); int query_out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out); - struct mlx5_eswitch *esw; struct mlx5_vport *vport; void *query_ctx; void *hca_caps; u16 vport_num; int err; - esw = mlx5_devlink_eswitch_get(port->devlink); - if (IS_ERR(esw)) - return PTR_ERR(esw); - vport = mlx5_devlink_port_fn_get_vport(port, esw); if (IS_ERR(vport)) { NL_SET_ERR_MSG_MOD(extack, "Invalid port"); -- 2.30.2