LXR linux/net/hsr/hsr

   1/* Copyright 2011-2014 Autronica Fire and Security AS
   2 *
   3 * This program is free software; you can redistribute it and/or modify it
   4 * under the terms of the GNU General Public License as published by the Free
   5 * Software Foundation; either version 2 of the License, or (at your option)
   6 * any later version.
   7 *
   8 * Author(s):
   9 *      2011-2014 Arvid Brodin, arvid.brodin@alten.se
  10 */
  11
  12#ifndef __HSR_SLAVE_H
  13#define __HSR_SLAVE_H
  14
  15#include <linux/skbuff.h>
  16#include <linux/netdevice.h>
  17#include <linux/rtnetlink.h>
  18#include "hsr_main.h"
  19
  20int hsr_add_port(struct hsr_priv *hsr, struct net_device *dev,
  21                 enum hsr_port_type pt);
  22void hsr_del_port(struct hsr_port *port);
  23bool hsr_port_exists(const struct net_device *dev);
  24
  25static inline struct hsr_port *hsr_port_get_rtnl(const struct net_device *dev)
  26{
  27        ASSERT_RTNL();
  28        return hsr_port_exists(dev) ?
  29                                rtnl_dereference(dev->rx_handler_data) : NULL;
  30}
  31
  32static inline struct hsr_port *hsr_port_get_rcu(const struct net_device *dev)
  33{
  34        return hsr_port_exists(dev) ?
  35                                rcu_dereference(dev->rx_handler_data) : NULL;
  36}
  37
  38#endif /* __HSR_SLAVE_H */
  39