Merge tag 'docs-6.0' of git://git.lwn.net/linux
[linux-2.6-microblaze.git] / net / batman-adv / originator.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) B.A.T.M.A.N. contributors:
3  *
4  * Marek Lindner, Simon Wunderlich
5  */
6
7 #ifndef _NET_BATMAN_ADV_ORIGINATOR_H_
8 #define _NET_BATMAN_ADV_ORIGINATOR_H_
9
10 #include "main.h"
11
12 #include <linux/compiler.h>
13 #include <linux/if_ether.h>
14 #include <linux/jhash.h>
15 #include <linux/kref.h>
16 #include <linux/netlink.h>
17 #include <linux/skbuff.h>
18 #include <linux/types.h>
19
20 bool batadv_compare_orig(const struct hlist_node *node, const void *data2);
21 int batadv_originator_init(struct batadv_priv *bat_priv);
22 void batadv_originator_free(struct batadv_priv *bat_priv);
23 void batadv_purge_orig_ref(struct batadv_priv *bat_priv);
24 void batadv_orig_node_release(struct kref *ref);
25 struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
26                                               const u8 *addr);
27 struct batadv_hardif_neigh_node *
28 batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface,
29                         const u8 *neigh_addr);
30 void batadv_hardif_neigh_release(struct kref *ref);
31 struct batadv_neigh_node *
32 batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node,
33                                 struct batadv_hard_iface *hard_iface,
34                                 const u8 *neigh_addr);
35 void batadv_neigh_node_release(struct kref *ref);
36 struct batadv_neigh_node *
37 batadv_orig_router_get(struct batadv_orig_node *orig_node,
38                        const struct batadv_hard_iface *if_outgoing);
39 struct batadv_neigh_ifinfo *
40 batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh,
41                         struct batadv_hard_iface *if_outgoing);
42 struct batadv_neigh_ifinfo *
43 batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh,
44                         struct batadv_hard_iface *if_outgoing);
45 void batadv_neigh_ifinfo_release(struct kref *ref);
46
47 int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb);
48
49 struct batadv_orig_ifinfo *
50 batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node,
51                        struct batadv_hard_iface *if_outgoing);
52 struct batadv_orig_ifinfo *
53 batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
54                        struct batadv_hard_iface *if_outgoing);
55 void batadv_orig_ifinfo_release(struct kref *ref);
56
57 int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb);
58 struct batadv_orig_node_vlan *
59 batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node,
60                           unsigned short vid);
61 struct batadv_orig_node_vlan *
62 batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node,
63                           unsigned short vid);
64 void batadv_orig_node_vlan_release(struct kref *ref);
65
66 /**
67  * batadv_choose_orig() - Return the index of the orig entry in the hash table
68  * @data: mac address of the originator node
69  * @size: the size of the hash table
70  *
71  * Return: the hash index where the object represented by @data should be
72  * stored at.
73  */
74 static inline u32 batadv_choose_orig(const void *data, u32 size)
75 {
76         u32 hash = 0;
77
78         hash = jhash(data, ETH_ALEN, hash);
79         return hash % size;
80 }
81
82 struct batadv_orig_node *
83 batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data);
84
85 /**
86  * batadv_orig_node_vlan_put() - decrement the refcounter and possibly release
87  *  the originator-vlan object
88  * @orig_vlan: the originator-vlan object to release
89  */
90 static inline void
91 batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan)
92 {
93         if (!orig_vlan)
94                 return;
95
96         kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release);
97 }
98
99 /**
100  * batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release
101  *  the neigh_ifinfo
102  * @neigh_ifinfo: the neigh_ifinfo object to release
103  */
104 static inline void
105 batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo)
106 {
107         if (!neigh_ifinfo)
108                 return;
109
110         kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release);
111 }
112
113 /**
114  * batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter
115  *  and possibly release it
116  * @hardif_neigh: hardif neigh neighbor to free
117  */
118 static inline void
119 batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh)
120 {
121         if (!hardif_neigh)
122                 return;
123
124         kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release);
125 }
126
127 /**
128  * batadv_neigh_node_put() - decrement the neighbors refcounter and possibly
129  *  release it
130  * @neigh_node: neigh neighbor to free
131  */
132 static inline void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node)
133 {
134         if (!neigh_node)
135                 return;
136
137         kref_put(&neigh_node->refcount, batadv_neigh_node_release);
138 }
139
140 /**
141  * batadv_orig_ifinfo_put() - decrement the refcounter and possibly release
142  *  the orig_ifinfo
143  * @orig_ifinfo: the orig_ifinfo object to release
144  */
145 static inline void
146 batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo)
147 {
148         if (!orig_ifinfo)
149                 return;
150
151         kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release);
152 }
153
154 /**
155  * batadv_orig_node_put() - decrement the orig node refcounter and possibly
156  *  release it
157  * @orig_node: the orig node to free
158  */
159 static inline void batadv_orig_node_put(struct batadv_orig_node *orig_node)
160 {
161         if (!orig_node)
162                 return;
163
164         kref_put(&orig_node->refcount, batadv_orig_node_release);
165 }
166
167 #endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */