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_ */
133