net/switchdev/switchdev.c

   1 /*
   2  * net/switchdev/switchdev.c - Switch device API
   3  * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/types.h>
  13 #include <linux/init.h>
  14 #include <linux/netdevice.h>
  15 #include <net/switchdev.h>
  16
  17 /**
  18  *      netdev_switch_parent_id_get - Get ID of a switch
  19  *      @dev: port device
  20  *      @psid: switch ID
  21  *
  22  *      Get ID of a switch this port is part of.
  23  */
  24 int netdev_switch_parent_id_get(struct net_device *dev,
  25                                 struct netdev_phys_item_id *psid)
  26 {
  27         const struct net_device_ops *ops = dev->netdev_ops;
  28
  29         if (!ops->ndo_switch_parent_id_get)
  30                 return -EOPNOTSUPP;
  31         return ops->ndo_switch_parent_id_get(dev, psid);
  32 }
  33 EXPORT_SYMBOL(netdev_switch_parent_id_get);
  34
  35 /**
  36  *      netdev_switch_port_stp_update - Notify switch device port of STP
  37  *                                      state change
  38  *      @dev: port device
  39  *      @state: port STP state
  40  *
  41  *      Notify switch device port of bridge port STP state change.
  42  */
  43 int netdev_switch_port_stp_update(struct net_device *dev, u8 state)
  44 {
  45         const struct net_device_ops *ops = dev->netdev_ops;
  46
  47         if (!ops->ndo_switch_port_stp_update)
  48                 return -EOPNOTSUPP;
  49         WARN_ON(!ops->ndo_switch_parent_id_get);
  50         return ops->ndo_switch_port_stp_update(dev, state);
  51 }
  52 EXPORT_SYMBOL(netdev_switch_port_stp_update);