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 a68e622..439f330 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 69e59cf..824ca45 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 {