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mlxsw: spectrum: Implement LAG tx enabled lower state change 

Enabling/disabling TX on a LAG port means enabling/disabling distribution
in our HW.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2015-12-03 12:12:30 +01:00 committed by David S. Miller
parent 8a1ab5d766
commit 745812065c
1 changed files with 79 additions and 2 deletions
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81
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
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@ -2108,8 +2108,47 @@ static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
return 0;
}
static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
unsigned long event, void *ptr)
static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
u16 lag_id)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char sldr_pl[MLXSW_REG_SLDR_LEN];
mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
mlxsw_sp_port->local_port);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
}
static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
u16 lag_id)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char sldr_pl[MLXSW_REG_SLDR_LEN];
mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
mlxsw_sp_port->local_port);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
}
static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
bool lag_tx_enabled)
{
if (lag_tx_enabled)
return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
mlxsw_sp_port->lag_id);
else
return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
mlxsw_sp_port->lag_id);
}
static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
struct netdev_lag_lower_state_info *info)
{
return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
}
static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
unsigned long event, void *ptr)
{
struct netdev_notifier_changeupper_info *info;
struct mlxsw_sp_port *mlxsw_sp_port;
@ -2176,6 +2215,44 @@ static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
return NOTIFY_DONE;
}
static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
unsigned long event, void *ptr)
{
struct netdev_notifier_changelowerstate_info *info;
struct mlxsw_sp_port *mlxsw_sp_port;
int err;
mlxsw_sp_port = netdev_priv(dev);
info = ptr;
switch (event) {
case NETDEV_CHANGELOWERSTATE:
if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
info->lower_state_info);
if (err)
netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
}
break;
}
return NOTIFY_DONE;
}
static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
unsigned long event, void *ptr)
{
switch (event) {
case NETDEV_PRECHANGEUPPER:
case NETDEV_CHANGEUPPER:
return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
case NETDEV_CHANGELOWERSTATE:
return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
}
return NOTIFY_DONE;
}
static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
unsigned long event, void *ptr)
{