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 netlink_callback;
  27 struct seq_file;
  28 struct sk_buff;
  29
  30 #ifdef CONFIG_BATMAN_ADV_BLA
  31 bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
  32                    unsigned short vid, bool is_bcast);
  33 bool batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
  34                    unsigned short vid);
  35 bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
  36                                struct batadv_orig_node *orig_node,
  37                                int hdr_size);
  38 int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
  39 int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
  40 int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
  41                                              void *offset);
  42 int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb);
  43 bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig,
  44                                     unsigned short vid);
  45 bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
  46                                     struct sk_buff *skb);
  47 void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
  48                                     struct batadv_hard_iface *primary_if,
  49                                     struct batadv_hard_iface *oldif);
  50 void batadv_bla_status_update(struct net_device *net_dev);
  51 int batadv_bla_init(struct batadv_priv *bat_priv);
  52 void batadv_bla_free(struct batadv_priv *bat_priv);
  53 int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
  54 #define BATADV_BLA_CRC_INIT     0
  55 #else /* ifdef CONFIG_BATMAN_ADV_BLA */
  56
  57 static inline bool batadv_bla_rx(struct batadv_priv *bat_priv,
  58                                  struct sk_buff *skb, unsigned short vid,
  59                                  bool is_bcast)
  60 {
  61         return false;
  62 }
  63
  64 static inline bool batadv_bla_tx(struct batadv_priv *bat_priv,
  65                                  struct sk_buff *skb, unsigned short vid)
  66 {
  67         return false;
  68 }
  69
  70 static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
  71                                              struct batadv_orig_node *orig_node,
  72                                              int hdr_size)
  73 {
  74         return false;
  75 }
  76
  77 static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq,
  78                                                         void *offset)
  79 {
  80         return 0;
  81 }
  82
  83 static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
  84                                                            void *offset)
  85 {
  86         return 0;
  87 }
  88
  89 static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
  90                                                   u8 *orig, unsigned short vid)
  91 {
  92         return false;
  93 }
  94
  95 static inline bool
  96 batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
  97                                struct sk_buff *skb)
  98 {
  99         return false;
 100 }
 101
 102 static inline void
 103 batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
 104                                struct batadv_hard_iface *primary_if,
 105                                struct batadv_hard_iface *oldif)
 106 {
 107 }
 108
 109 static inline int batadv_bla_init(struct batadv_priv *bat_priv)
 110 {
 111         return 1;
 112 }
 113
 114 static inline void batadv_bla_free(struct batadv_priv *bat_priv)
 115 {
 116 }
 117
 118 static inline int batadv_bla_claim_dump(struct sk_buff *msg,
 119                                         struct netlink_callback *cb)
 120 {
 121         return -EOPNOTSUPP;
 122 }
 123
 124 static inline int batadv_bla_backbone_dump(struct sk_buff *msg,
 125                                            struct netlink_callback *cb)
 126 {
 127         return -EOPNOTSUPP;
 128 }
 129
 130 #endif /* ifdef CONFIG_BATMAN_ADV_BLA */
 131
 132 #endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */