net/hsr/hsr_slave.h

   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
  20 int hsr_add_port(struct hsr_priv *hsr, struct net_device *dev,
  21                  enum hsr_port_type pt);
  22 void hsr_del_port(struct hsr_port *port);
  23 bool hsr_port_exists(const struct net_device *dev);
  24
  25 static 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
  32 static 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 */