net/batman-adv/bridge_loop_avoidance.h

   1 /* Copyright (C) 2011-2016  B.A.T.M.A.N. contributors:
   2  *
   3  * Simon Wunderlich
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of version 2 of the GNU General Public
   7  * License as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef _NET_BATMAN_ADV_BLA_H_
  19 #define _NET_BATMAN_ADV_BLA_H_
  20
  21 #include "main.h"
  22
  23 #include <linux/types.h>
  24
  25 struct net_device;
  26 struct seq_file;
  27 struct sk_buff;
  28
  29 #ifdef CONFIG_BATMAN_ADV_BLA
  30 int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
  31                   unsigned short vid, bool is_bcast);
  32 int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
  33                   unsigned short vid);
  34 int batadv_bla_is_backbone_gw(struct sk_buff *skb,
  35                               struct batadv_orig_node *orig_node, int hdr_size);
  36 int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
  37 int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
  38                                              void *offset);
  39 bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig,
  40                                     unsigned short vid);
  41 int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
  42                                    struct sk_buff *skb);
  43 void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
  44                                     struct batadv_hard_iface *primary_if,
  45                                     struct batadv_hard_iface *oldif);
  46 void batadv_bla_status_update(struct net_device *net_dev);
  47 int batadv_bla_init(struct batadv_priv *bat_priv);
  48 void batadv_bla_free(struct batadv_priv *bat_priv);
  49
  50 #define BATADV_BLA_CRC_INIT     0
  51 #else /* ifdef CONFIG_BATMAN_ADV_BLA */
  52
  53 static inline int batadv_bla_rx(struct batadv_priv *bat_priv,
  54                                 struct sk_buff *skb, unsigned short vid,
  55                                 bool is_bcast)
  56 {
  57         return 0;
  58 }
  59
  60 static inline int batadv_bla_tx(struct batadv_priv *bat_priv,
  61                                 struct sk_buff *skb, unsigned short vid)
  62 {
  63         return 0;
  64 }
  65
  66 static inline int batadv_bla_is_backbone_gw(struct sk_buff *skb,
  67                                             struct batadv_orig_node *orig_node,
  68                                             int hdr_size)
  69 {
  70         return 0;
  71 }
  72
  73 static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq,
  74                                                         void *offset)
  75 {
  76         return 0;
  77 }
  78
  79 static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
  80                                                            void *offset)
  81 {
  82         return 0;
  83 }
  84
  85 static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
  86                                                   u8 *orig, unsigned short vid)
  87 {
  88         return false;
  89 }
  90
  91 static inline int
  92 batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
  93                                struct sk_buff *skb)
  94 {
  95         return 0;
  96 }
  97
  98 static inline void
  99 batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
 100                                struct batadv_hard_iface *primary_if,
 101                                struct batadv_hard_iface *oldif)
 102 {
 103 }
 104
 105 static inline int batadv_bla_init(struct batadv_priv *bat_priv)
 106 {
 107         return 1;
 108 }
 109
 110 static inline void batadv_bla_free(struct batadv_priv *bat_priv)
 111 {
 112 }
 113
 114 #endif /* ifdef CONFIG_BATMAN_ADV_BLA */
 115
 116 #endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */