mlxsw: spectrum: Allow setting maximum rate for a TC
Allow a user to set maximum rate for a particular TC using DCB ops.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c
index aa5b73a..257e2d4 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c
@@ -250,9 +250,51 @@
return 0;
}
+static int mlxsw_sp_dcbnl_ieee_getmaxrate(struct net_device *dev,
+ struct ieee_maxrate *maxrate)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
+
+ memcpy(maxrate, mlxsw_sp_port->dcb.maxrate, sizeof(*maxrate));
+
+ return 0;
+}
+
+static int mlxsw_sp_dcbnl_ieee_setmaxrate(struct net_device *dev,
+ struct ieee_maxrate *maxrate)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
+ struct ieee_maxrate *my_maxrate = mlxsw_sp_port->dcb.maxrate;
+ int err, i;
+
+ for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
+ err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
+ MLXSW_REG_QEEC_HIERARCY_SUBGROUP,
+ i, 0,
+ maxrate->tc_maxrate[i]);
+ if (err) {
+ netdev_err(dev, "Failed to set maxrate for TC %d\n", i);
+ goto err_port_ets_maxrate_set;
+ }
+ }
+
+ memcpy(mlxsw_sp_port->dcb.maxrate, maxrate, sizeof(*maxrate));
+
+ return 0;
+
+err_port_ets_maxrate_set:
+ for (i--; i >= 0; i--)
+ mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
+ MLXSW_REG_QEEC_HIERARCY_SUBGROUP,
+ i, 0, my_maxrate->tc_maxrate[i]);
+ return err;
+}
+
static const struct dcbnl_rtnl_ops mlxsw_sp_dcbnl_ops = {
.ieee_getets = mlxsw_sp_dcbnl_ieee_getets,
.ieee_setets = mlxsw_sp_dcbnl_ieee_setets,
+ .ieee_getmaxrate = mlxsw_sp_dcbnl_ieee_getmaxrate,
+ .ieee_setmaxrate = mlxsw_sp_dcbnl_ieee_setmaxrate,
.getdcbx = mlxsw_sp_dcbnl_getdcbx,
.setdcbx = mlxsw_sp_dcbnl_setdcbx,
@@ -275,6 +317,26 @@
kfree(mlxsw_sp_port->dcb.ets);
}
+static int mlxsw_sp_port_maxrate_init(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+ int i;
+
+ mlxsw_sp_port->dcb.maxrate = kmalloc(sizeof(*mlxsw_sp_port->dcb.maxrate),
+ GFP_KERNEL);
+ if (!mlxsw_sp_port->dcb.maxrate)
+ return -ENOMEM;
+
+ for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
+ mlxsw_sp_port->dcb.maxrate->tc_maxrate[i] = MLXSW_REG_QEEC_MAS_DIS;
+
+ return 0;
+}
+
+static void mlxsw_sp_port_maxrate_fini(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+ kfree(mlxsw_sp_port->dcb.maxrate);
+}
+
int mlxsw_sp_port_dcb_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
int err;
@@ -282,13 +344,21 @@
err = mlxsw_sp_port_ets_init(mlxsw_sp_port);
if (err)
return err;
+ err = mlxsw_sp_port_maxrate_init(mlxsw_sp_port);
+ if (err)
+ goto err_port_maxrate_init;
mlxsw_sp_port->dev->dcbnl_ops = &mlxsw_sp_dcbnl_ops;
return 0;
+
+err_port_maxrate_init:
+ mlxsw_sp_port_ets_fini(mlxsw_sp_port);
+ return err;
}
void mlxsw_sp_port_dcb_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{
+ mlxsw_sp_port_maxrate_fini(mlxsw_sp_port);
mlxsw_sp_port_ets_fini(mlxsw_sp_port);
}