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Subject[PATCH 4.17 019/101] net/mlx5e: Avoid dealing with vport representors if not being e-switch manager
Date
4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Or Gerlitz <ogerlitz@mellanox.com>

[ Upstream commit 733d3e5497070d05971352ca5087bac83c197c3d ]

In smartnic env, the host (PF) driver might not be an e-switch
manager, hence the switchdev mode representors are running on
the embedded cpu (EC) and not at the host.

As such, we should avoid dealing with vport representors if
not being esw manager.

While here, make sure to disallow eswitch switchdev related
setups through devlink if we are not esw managers.

Fixes: cb67b832921c ('net/mlx5e: Introduce SRIOV VF representors')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 12 ++++++------
drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 2 +-
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c | 4 ++--
3 files changed, 9 insertions(+), 9 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -2612,7 +2612,7 @@ void mlx5e_activate_priv_channels(struct
mlx5e_activate_channels(&priv->channels);
netif_tx_start_all_queues(priv->netdev);

- if (MLX5_VPORT_MANAGER(priv->mdev))
+ if (MLX5_ESWITCH_MANAGER(priv->mdev))
mlx5e_add_sqs_fwd_rules(priv);

mlx5e_wait_channels_min_rx_wqes(&priv->channels);
@@ -2623,7 +2623,7 @@ void mlx5e_deactivate_priv_channels(stru
{
mlx5e_redirect_rqts_to_drop(priv);

- if (MLX5_VPORT_MANAGER(priv->mdev))
+ if (MLX5_ESWITCH_MANAGER(priv->mdev))
mlx5e_remove_sqs_fwd_rules(priv);

/* FIXME: This is a W/A only for tx timeout watch dog false alarm when
@@ -4315,7 +4315,7 @@ static void mlx5e_build_nic_netdev(struc
mlx5e_set_netdev_dev_addr(netdev);

#if IS_ENABLED(CONFIG_MLX5_ESWITCH)
- if (MLX5_VPORT_MANAGER(mdev))
+ if (MLX5_ESWITCH_MANAGER(mdev))
netdev->switchdev_ops = &mlx5e_switchdev_ops;
#endif

@@ -4465,7 +4465,7 @@ static void mlx5e_nic_enable(struct mlx5

mlx5e_enable_async_events(priv);

- if (MLX5_VPORT_MANAGER(priv->mdev))
+ if (MLX5_ESWITCH_MANAGER(priv->mdev))
mlx5e_register_vport_reps(priv);

if (netdev->reg_state != NETREG_REGISTERED)
@@ -4500,7 +4500,7 @@ static void mlx5e_nic_disable(struct mlx

queue_work(priv->wq, &priv->set_rx_mode_work);

- if (MLX5_VPORT_MANAGER(priv->mdev))
+ if (MLX5_ESWITCH_MANAGER(priv->mdev))
mlx5e_unregister_vport_reps(priv);

mlx5e_disable_async_events(priv);
@@ -4684,7 +4684,7 @@ static void *mlx5e_add(struct mlx5_core_
return NULL;

#ifdef CONFIG_MLX5_ESWITCH
- if (MLX5_VPORT_MANAGER(mdev)) {
+ if (MLX5_ESWITCH_MANAGER(mdev)) {
rpriv = mlx5e_alloc_nic_rep_priv(mdev);
if (!rpriv) {
mlx5_core_warn(mdev, "Failed to alloc NIC rep priv data\n");
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -790,7 +790,7 @@ bool mlx5e_is_uplink_rep(struct mlx5e_pr
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep;

- if (!MLX5_CAP_GEN(priv->mdev, vport_group_manager))
+ if (!MLX5_ESWITCH_MANAGER(priv->mdev))
return false;

rep = rpriv->rep;
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -983,8 +983,8 @@ static int mlx5_devlink_eswitch_check(st
if (MLX5_CAP_GEN(dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
return -EOPNOTSUPP;

- if (!MLX5_CAP_GEN(dev, vport_group_manager))
- return -EOPNOTSUPP;
+ if(!MLX5_ESWITCH_MANAGER(dev))
+ return -EPERM;

if (dev->priv.eswitch->mode == SRIOV_NONE)
return -EOPNOTSUPP;

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