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  * include file for HSR and PRP.
   7  */
   8
   9 #ifndef __HSR_SLAVE_H
  10 #define __HSR_SLAVE_H
  11
  12 #include <linux/skbuff.h>
  13 #include <linux/netdevice.h>
  14 #include <linux/rtnetlink.h>
  15 #include "hsr_main.h"
  16
  17 int hsr_add_port(struct hsr_priv *hsr, struct net_device *dev,
  18                  enum hsr_port_type pt, struct netlink_ext_ack *extack);
  19 void hsr_del_port(struct hsr_port *port);
  20 bool hsr_port_exists(const struct net_device *dev);
  21
  22 static inline struct hsr_port *hsr_port_get_rtnl(const struct net_device *dev)
  23 {
  24         ASSERT_RTNL();
  25         return hsr_port_exists(dev) ?
  26                                 rtnl_dereference(dev->rx_handler_data) : NULL;
  27 }
  28
  29 static inline struct hsr_port *hsr_port_get_rcu(const struct net_device *dev)
  30 {
  31         return hsr_port_exists(dev) ?
  32                                 rcu_dereference(dev->rx_handler_data) : NULL;
  33 }
  34
  35 bool hsr_invalid_dan_ingress_frame(__be16 protocol);
  36
  37 #endif /* __HSR_SLAVE_H */