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Message-ID: <20230823051012.162483-12-saeed@kernel.org>
Date: Tue, 22 Aug 2023 22:10:08 -0700
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Eric Dumazet <edumazet@...gle.com>
Cc: Saeed Mahameed <saeedm@...dia.com>,
netdev@...r.kernel.org,
Tariq Toukan <tariqt@...dia.com>,
Jiri Pirko <jiri@...dia.com>,
Shay Drory <shayd@...dia.com>
Subject: [net-next 11/15] net/mlx5: Relax mlx5_devlink_eswitch_get() return value checking
From: Jiri Pirko <jiri@...dia.com>
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 <jiri@...dia.com>
Reviewed-by: Shay Drory <shayd@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
.../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 5368b33fde63..db1c2a076364 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 8d03d4fe6eec..9f94c3d6d6e5 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 87cc6ad2e17f..23b562f07c68 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 @@ int mlx5_devlink_port_fn_migratable_set(struct devlink_port *port, bool enable,
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");
--
2.41.0
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