mlxsw: spectrum: Keep maximum speed around

The maximum port speed depends on link modes supported by the port, and for
Ethernet ports is constant. The maximum speed will be handy when setting
SBIB, the internal buffer used for traffic mirroring. Therefore, keep it in
struct mlxsw_sp_port for easy access.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index a68e62256bee9213c105302c4b40a9b87028b993..439f3302c4ffd2f3cbbbb16463de1980514fdadb 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -1849,6 +1849,14 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
                goto err_port_speed_by_width_set;
        }
 
+       err = mlxsw_sp->port_type_speed_ops->ptys_max_speed(mlxsw_sp_port,
+                                                           &mlxsw_sp_port->max_speed);
+       if (err) {
+               dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to get maximum speed\n",
+                       mlxsw_sp_port->local_port);
+               goto err_max_speed_get;
+       }
+
        err = mlxsw_sp_port_max_mtu_get(mlxsw_sp_port, &mlxsw_sp_port->max_mtu);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to get maximum MTU\n",
@@ -1981,6 +1989,7 @@ err_port_buffers_init:
 err_port_admin_status_set:
 err_port_mtu_set:
 err_port_max_mtu_get:
+err_max_speed_get:
 err_port_speed_by_width_set:
 err_port_system_port_mapping_set:
 err_dev_addr_init:

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 69e59cf7812f7f5821a5e797af2fe3980566ecd4..824ca4507c7ede9eb0a8ef2e22018f96918fc473 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -320,6 +320,7 @@ struct mlxsw_sp_port {
                struct delayed_work speed_update_dw;
        } span;
        int max_mtu;
+       u32 max_speed;
 };
 
 struct mlxsw_sp_port_type_speed_ops {