+static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
+{
+ char sldr_pl[MLXSW_REG_SLDR_LEN];
+
+ mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
+}
+
+static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
+{
+ char sldr_pl[MLXSW_REG_SLDR_LEN];
+
+ mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
+}
+
+static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
+ u16 lag_id, u8 port_index)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ char slcor_pl[MLXSW_REG_SLCOR_LEN];
+
+ mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
+ lag_id, port_index);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
+}
+
+static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
+ u16 lag_id)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ char slcor_pl[MLXSW_REG_SLCOR_LEN];
+
+ mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
+ lag_id);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
+}
+
+static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
+ u16 lag_id)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ char slcor_pl[MLXSW_REG_SLCOR_LEN];
+
+ mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
+ lag_id);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
+}
+
+static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
+ u16 lag_id)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ char slcor_pl[MLXSW_REG_SLCOR_LEN];
+
+ mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
+ lag_id);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
+}
+
+static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *lag_dev,
+ u16 *p_lag_id)
+{
+ struct mlxsw_sp_upper *lag;
+ int free_lag_id = -1;
+ int i;
+
+ for (i = 0; i < MLXSW_SP_LAG_MAX; i++) {
+ lag = mlxsw_sp_lag_get(mlxsw_sp, i);
+ if (lag->ref_count) {
+ if (lag->dev == lag_dev) {
+ *p_lag_id = i;
+ return 0;
+ }
+ } else if (free_lag_id < 0) {
+ free_lag_id = i;
+ }
+ }
+ if (free_lag_id < 0)
+ return -EBUSY;
+ *p_lag_id = free_lag_id;
+ return 0;
+}
+
+static bool
+mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *lag_dev,
+ struct netdev_lag_upper_info *lag_upper_info)
+{
+ u16 lag_id;
+
+ if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
+ return false;
+ if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
+ return false;
+ return true;
+}
+
+static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
+ u16 lag_id, u8 *p_port_index)
+{
+ int i;
+
+ for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
+ if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
+ *p_port_index = i;
+ return 0;
+ }
+ }
+ return -EBUSY;
+}
+
+static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
+ struct net_device *lag_dev)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ struct mlxsw_sp_upper *lag;
+ u16 lag_id;
+ u8 port_index;
+ int err;
+
+ err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
+ if (err)
+ return err;
+ lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
+ if (!lag->ref_count) {
+ err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
+ if (err)
+ return err;
+ lag->dev = lag_dev;
+ }
+
+ err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
+ if (err)
+ return err;
+ err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
+ if (err)
+ goto err_col_port_add;
+ err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
+ if (err)
+ goto err_col_port_enable;
+
+ mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
+ mlxsw_sp_port->local_port);
+ mlxsw_sp_port->lag_id = lag_id;
+ mlxsw_sp_port->lagged = 1;
+ lag->ref_count++;
+ return 0;
+
+err_col_port_add:
+ if (!lag->ref_count)
+ mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
+err_col_port_enable:
+ mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
+ return err;
+}
+
+static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
+ struct net_device *lag_dev)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ struct mlxsw_sp_upper *lag;
+ u16 lag_id = mlxsw_sp_port->lag_id;
+ int err;
+
+ if (!mlxsw_sp_port->lagged)
+ return 0;
+ lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
+ WARN_ON(lag->ref_count == 0);
+
+ err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
+ if (err)
+ return err;
+ mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
+ if (err)
+ return err;
+
+ if (lag->ref_count == 1) {
+ err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
+ if (err)
+ return err;
+ }
+
+ mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
+ mlxsw_sp_port->local_port);
+ mlxsw_sp_port->lagged = 0;
+ lag->ref_count--;
+ return 0;
+}
+
+static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
+ unsigned long event, void *ptr)