kernel/net/batman-adv/bridge_loop_avoidance.h

   1 /* Copyright (C) 2011-2015 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 seq_file;
  26 struct sk_buff;
  27
  28 #ifdef CONFIG_BATMAN_ADV_BLA
  29 int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
  30                   unsigned short vid, bool is_bcast);
  31 int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
  32                   unsigned short vid);
  33 int batadv_bla_is_backbone_gw(struct sk_buff *skb,
  34                               struct batadv_orig_node *orig_node, int hdr_size);
  35 int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
  36 int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
  37                                              void *offset);
  38 bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig,
  39                                     unsigned short vid);
  40 int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
  41                                    struct sk_buff *skb);
  42 void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
  43                                     struct batadv_hard_iface *primary_if,
  44                                     struct batadv_hard_iface *oldif);
  45 int batadv_bla_init(struct batadv_priv *bat_priv);
  46 void batadv_bla_free(struct batadv_priv *bat_priv);
  47
  48 #define BATADV_BLA_CRC_INIT     0
  49 #else /* ifdef CONFIG_BATMAN_ADV_BLA */
  50
  51 static inline int batadv_bla_rx(struct batadv_priv *bat_priv,
  52                                 struct sk_buff *skb, unsigned short vid,
  53                                 bool is_bcast)
  54 {
  55         return 0;
  56 }
  57
  58 static inline int batadv_bla_tx(struct batadv_priv *bat_priv,
  59                                 struct sk_buff *skb, unsigned short vid)
  60 {
  61         return 0;
  62 }
  63
  64 static inline int batadv_bla_is_backbone_gw(struct sk_buff *skb,
  65                                             struct batadv_orig_node *orig_node,
  66                                             int hdr_size)
  67 {
  68         return 0;
  69 }
  70
  71 static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq,
  72                                                         void *offset)
  73 {
  74         return 0;
  75 }
  76
  77 static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
  78                                                            void *offset)
  79 {
  80         return 0;
  81 }
  82
  83 static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
  84                                                   u8 *orig, unsigned short vid)
  85 {
  86         return false;
  87 }
  88
  89 static inline int
  90 batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
  91                                struct sk_buff *skb)
  92 {
  93         return 0;
  94 }
  95
  96 static inline void
  97 batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
  98                                struct batadv_hard_iface *primary_if,
  99                                struct batadv_hard_iface *oldif)
 100 {
 101 }
 102
 103 static inline int batadv_bla_init(struct batadv_priv *bat_priv)
 104 {
 105         return 1;
 106 }
 107
 108 static inline void batadv_bla_free(struct batadv_priv *bat_priv)
 109 {
 110 }
 111
 112 #endif /* ifdef CONFIG_BATMAN_ADV_BLA */
 113
 114 #endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */