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 batadv_hard_iface;
  26 struct batadv_orig_node;
  27 struct batadv_priv;
  28 struct seq_file;
  29 struct sk_buff;
  30
  31 #ifdef CONFIG_BATMAN_ADV_BLA
  32 int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
  33                   unsigned short vid, bool is_bcast);
  34 int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
  35                   unsigned short vid);
  36 int batadv_bla_is_backbone_gw(struct sk_buff *skb,
  37                               struct batadv_orig_node *orig_node, int hdr_size);
  38 int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
  39 int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
  40                                              void *offset);
  41 bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig,
  42                                     unsigned short vid);
  43 int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
  44                                    struct sk_buff *skb);
  45 void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
  46                                     struct batadv_hard_iface *primary_if,
  47                                     struct batadv_hard_iface *oldif);
  48 int batadv_bla_init(struct batadv_priv *bat_priv);
  49 void batadv_bla_free(struct batadv_priv *bat_priv);
  50
  51 #define BATADV_BLA_CRC_INIT     0
  52 #else /* ifdef CONFIG_BATMAN_ADV_BLA */
  53
  54 static inline int batadv_bla_rx(struct batadv_priv *bat_priv,
  55                                 struct sk_buff *skb, unsigned short vid,
  56                                 bool is_bcast)
  57 {
  58         return 0;
  59 }
  60
  61 static inline int batadv_bla_tx(struct batadv_priv *bat_priv,
  62                                 struct sk_buff *skb, unsigned short vid)
  63 {
  64         return 0;
  65 }
  66
  67 static inline int batadv_bla_is_backbone_gw(struct sk_buff *skb,
  68                                             struct batadv_orig_node *orig_node,
  69                                             int hdr_size)
  70 {
  71         return 0;
  72 }
  73
  74 static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq,
  75                                                         void *offset)
  76 {
  77         return 0;
  78 }
  79
  80 static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
  81                                                            void *offset)
  82 {
  83         return 0;
  84 }
  85
  86 static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
  87                                                   u8 *orig, unsigned short vid)
  88 {
  89         return false;
  90 }
  91
  92 static inline int
  93 batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
  94                                struct sk_buff *skb)
  95 {
  96         return 0;
  97 }
  98
  99 static inline void
 100 batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
 101                                struct batadv_hard_iface *primary_if,
 102                                struct batadv_hard_iface *oldif)
 103 {
 104 }
 105
 106 static inline int batadv_bla_init(struct batadv_priv *bat_priv)
 107 {
 108         return 1;
 109 }
 110
 111 static inline void batadv_bla_free(struct batadv_priv *bat_priv)
 112 {
 113 }
 114
 115 #endif /* ifdef CONFIG_BATMAN_ADV_BLA */
 116
 117 #endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */