xref: /openbmc/linux/net/batman-adv/originator.h (revision 8fdf9062)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2007-2018  B.A.T.M.A.N. contributors:
3  *
4  * Marek Lindner, Simon Wunderlich
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of version 2 of the GNU General Public
8  * License as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, see <http://www.gnu.org/licenses/>.
17  */
18 
19 #ifndef _NET_BATMAN_ADV_ORIGINATOR_H_
20 #define _NET_BATMAN_ADV_ORIGINATOR_H_
21 
22 #include "main.h"
23 
24 #include <linux/compiler.h>
25 #include <linux/if_ether.h>
26 #include <linux/jhash.h>
27 #include <linux/types.h>
28 
29 struct netlink_callback;
30 struct seq_file;
31 struct sk_buff;
32 
33 bool batadv_compare_orig(const struct hlist_node *node, const void *data2);
34 int batadv_originator_init(struct batadv_priv *bat_priv);
35 void batadv_originator_free(struct batadv_priv *bat_priv);
36 void batadv_purge_orig_ref(struct batadv_priv *bat_priv);
37 void batadv_orig_node_put(struct batadv_orig_node *orig_node);
38 struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
39 					      const u8 *addr);
40 struct batadv_hardif_neigh_node *
41 batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface,
42 			const u8 *neigh_addr);
43 void
44 batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh);
45 struct batadv_neigh_node *
46 batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node,
47 				struct batadv_hard_iface *hard_iface,
48 				const u8 *neigh_addr);
49 void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node);
50 struct batadv_neigh_node *
51 batadv_orig_router_get(struct batadv_orig_node *orig_node,
52 		       const struct batadv_hard_iface *if_outgoing);
53 struct batadv_neigh_ifinfo *
54 batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh,
55 			struct batadv_hard_iface *if_outgoing);
56 struct batadv_neigh_ifinfo *
57 batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh,
58 			struct batadv_hard_iface *if_outgoing);
59 void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo);
60 
61 int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb);
62 int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset);
63 
64 struct batadv_orig_ifinfo *
65 batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node,
66 		       struct batadv_hard_iface *if_outgoing);
67 struct batadv_orig_ifinfo *
68 batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
69 		       struct batadv_hard_iface *if_outgoing);
70 void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo);
71 
72 int batadv_orig_seq_print_text(struct seq_file *seq, void *offset);
73 int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb);
74 int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset);
75 struct batadv_orig_node_vlan *
76 batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node,
77 			  unsigned short vid);
78 struct batadv_orig_node_vlan *
79 batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node,
80 			  unsigned short vid);
81 void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan);
82 
83 /**
84  * batadv_choose_orig() - Return the index of the orig entry in the hash table
85  * @data: mac address of the originator node
86  * @size: the size of the hash table
87  *
88  * Return: the hash index where the object represented by @data should be
89  * stored at.
90  */
91 static inline u32 batadv_choose_orig(const void *data, u32 size)
92 {
93 	u32 hash = 0;
94 
95 	hash = jhash(data, ETH_ALEN, hash);
96 	return hash % size;
97 }
98 
99 struct batadv_orig_node *
100 batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data);
101 
102 #endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */
103