net/hsr/hsr_slave.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright 2011-2014 Autronica Fire and Security AS
   3  *
   4  *      2011-2014 Arvid Brodin, arvid.brodin@alten.se
   5  */
   6
   7 #ifndef __HSR_SLAVE_H
   8 #define __HSR_SLAVE_H
   9
  10 #include <linux/skbuff.h>
  11 #include <linux/netdevice.h>
  12 #include <linux/rtnetlink.h>
  13 #include "hsr_main.h"
  14
  15 int hsr_add_port(struct hsr_priv *hsr, struct net_device *dev,
  16                  enum hsr_port_type pt);
  17 void hsr_del_port(struct hsr_port *port);
  18 bool hsr_port_exists(const struct net_device *dev);
  19
  20 static inline struct hsr_port *hsr_port_get_rtnl(const struct net_device *dev)
  21 {
  22         ASSERT_RTNL();
  23         return hsr_port_exists(dev) ?
  24                                 rtnl_dereference(dev->rx_handler_data) : NULL;
  25 }
  26
  27 static inline struct hsr_port *hsr_port_get_rcu(const struct net_device *dev)
  28 {
  29         return hsr_port_exists(dev) ?
  30                                 rcu_dereference(dev->rx_handler_data) : NULL;
  31 }
  32
  33 #endif /* __HSR_SLAVE_H */