Following patches will change the way we communicate getting or setting a port's attribute and use a blocking notifier to perform those tasks. Prepare mlx5e/en_rep.c to support receiving notifier events targeting SWITCHDEV_PORT_ATTR_GET and simply translate that into the existing switchdev_ops::switchdev_port_attr_get operation. We register a single blocking switchdev notifier for the entire set of representors given that mlx5e_rep_register_vport_reps() gets called for an Ethernet device. Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx> --- .../net/ethernet/mellanox/mlx5/core/en_main.c | 4 +- .../net/ethernet/mellanox/mlx5/core/en_rep.c | 45 ++++++++++++++++++- .../net/ethernet/mellanox/mlx5/core/en_rep.h | 2 +- 3 files changed, 48 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index dee0c8f3d4e9..fcfe1c9d3575 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -5036,7 +5036,9 @@ static void *mlx5e_add(struct mlx5_core_dev *mdev) #ifdef CONFIG_MLX5_ESWITCH if (MLX5_ESWITCH_MANAGER(mdev) && mlx5_eswitch_mode(mdev->priv.eswitch) == SRIOV_OFFLOADS) { - mlx5e_rep_register_vport_reps(mdev); + err = mlx5e_rep_register_vport_reps(mdev); + if (err) + return NULL; return mdev; } #endif diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c index 04736212a21c..9bac78e111c6 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c @@ -1289,6 +1289,21 @@ static const struct switchdev_ops mlx5e_rep_switchdev_ops = { .switchdev_port_attr_get = mlx5e_attr_get, }; +static int mlx5e_rep_swdev_port_attr_event(unsigned long event, + struct net_device *dev, + struct switchdev_notifier_port_attr_info *port_attr_info) +{ + int rc; + + if (event != SWITCHDEV_PORT_ATTR_GET) + return NOTIFY_DONE; + + rc = mlx5e_attr_get(dev, port_attr_info->attr); + port_attr_info->handled = true; + + return notifier_from_errno(rc); +} + static const struct net_device_ops mlx5e_netdev_ops_vf_rep = { .ndo_open = mlx5e_vf_rep_open, .ndo_stop = mlx5e_vf_rep_close, @@ -1321,6 +1336,22 @@ static const struct net_device_ops mlx5e_netdev_ops_uplink_rep = { .ndo_get_vf_stats = mlx5e_get_vf_stats, }; +static int mlx5e_rep_swdev_blocking_event(struct notifier_block *nb, + unsigned long event, void *ptr) +{ + struct net_device *netdev = switchdev_notifier_info_to_dev(ptr); + + if (netdev->netdev_ops != &mlx5e_netdev_ops_vf_rep) + return NOTIFY_DONE; + + switch (event) { + case SWITCHDEV_PORT_ATTR_GET: + return mlx5e_rep_swdev_port_attr_event(event, netdev, ptr); + } + + return NOTIFY_DONE; +} + bool mlx5e_eswitch_rep(struct net_device *netdev) { if (netdev->netdev_ops == &mlx5e_netdev_ops_vf_rep || @@ -1798,11 +1829,20 @@ static void *mlx5e_vport_rep_get_proto_dev(struct mlx5_eswitch_rep *rep) return rpriv->netdev; } -void mlx5e_rep_register_vport_reps(struct mlx5_core_dev *mdev) +static struct notifier_block mlx5e_rep_swdev_nb = { + .notifier_call = mlx5e_rep_swdev_blocking_event, +}; + +int mlx5e_rep_register_vport_reps(struct mlx5_core_dev *mdev) { struct mlx5_eswitch *esw = mdev->priv.eswitch; int total_vfs = MLX5_TOTAL_VPORTS(mdev); int vport; + int rc; + + rc = register_switchdev_blocking_notifier(&mlx5e_rep_swdev_nb); + if (rc) + return rc; for (vport = 0; vport < total_vfs; vport++) { struct mlx5_eswitch_rep_if rep_if = {}; @@ -1812,6 +1852,8 @@ void mlx5e_rep_register_vport_reps(struct mlx5_core_dev *mdev) rep_if.get_proto_dev = mlx5e_vport_rep_get_proto_dev; mlx5_eswitch_register_vport_rep(esw, vport, &rep_if, REP_ETH); } + + return rc; } void mlx5e_rep_unregister_vport_reps(struct mlx5_core_dev *mdev) @@ -1822,4 +1864,5 @@ void mlx5e_rep_unregister_vport_reps(struct mlx5_core_dev *mdev) for (vport = total_vfs - 1; vport >= 0; vport--) mlx5_eswitch_unregister_vport_rep(esw, vport, REP_ETH); + unregister_switchdev_blocking_notifier(&mlx5e_rep_swdev_nb); } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h index edd722824697..b9e0507f6100 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h @@ -162,7 +162,7 @@ struct mlx5e_rep_sq { }; void *mlx5e_alloc_nic_rep_priv(struct mlx5_core_dev *mdev); -void mlx5e_rep_register_vport_reps(struct mlx5_core_dev *mdev); +int mlx5e_rep_register_vport_reps(struct mlx5_core_dev *mdev); void mlx5e_rep_unregister_vport_reps(struct mlx5_core_dev *mdev); bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv); int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv); -- 2.17.1 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel