Commit | Line | Data |
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c6c8fea2 | 1 | /* |
64afe353 | 2 | * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
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, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
18 | * 02110-1301, USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include "main.h" | |
23 | #include "bat_sysfs.h" | |
24 | #include "bat_debugfs.h" | |
25 | #include "routing.h" | |
26 | #include "send.h" | |
27 | #include "originator.h" | |
28 | #include "soft-interface.h" | |
29 | #include "icmp_socket.h" | |
30 | #include "translation-table.h" | |
31 | #include "hard-interface.h" | |
32 | #include "gateway_client.h" | |
c6c8fea2 SE |
33 | #include "vis.h" |
34 | #include "hash.h" | |
35 | ||
c3caf519 SE |
36 | |
37 | /* List manipulations on hardif_list have to be rtnl_lock()'ed, | |
38 | * list traversals just rcu-locked */ | |
4389e47a | 39 | struct list_head hardif_list; |
c6c8fea2 SE |
40 | |
41 | unsigned char broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
42 | ||
43 | struct workqueue_struct *bat_event_workqueue; | |
44 | ||
45 | static int __init batman_init(void) | |
46 | { | |
4389e47a | 47 | INIT_LIST_HEAD(&hardif_list); |
c6c8fea2 SE |
48 | |
49 | /* the name should not be longer than 10 chars - see | |
50 | * http://lwn.net/Articles/23634/ */ | |
51 | bat_event_workqueue = create_singlethread_workqueue("bat_events"); | |
52 | ||
53 | if (!bat_event_workqueue) | |
54 | return -ENOMEM; | |
55 | ||
56 | bat_socket_init(); | |
57 | debugfs_init(); | |
58 | ||
59 | register_netdevice_notifier(&hard_if_notifier); | |
60 | ||
61 | pr_info("B.A.T.M.A.N. advanced %s%s (compatibility version %i) " | |
62 | "loaded\n", SOURCE_VERSION, REVISION_VERSION_STR, | |
63 | COMPAT_VERSION); | |
64 | ||
65 | return 0; | |
66 | } | |
67 | ||
68 | static void __exit batman_exit(void) | |
69 | { | |
70 | debugfs_destroy(); | |
71 | unregister_netdevice_notifier(&hard_if_notifier); | |
72 | hardif_remove_interfaces(); | |
73 | ||
74 | flush_workqueue(bat_event_workqueue); | |
75 | destroy_workqueue(bat_event_workqueue); | |
76 | bat_event_workqueue = NULL; | |
77 | ||
78 | rcu_barrier(); | |
79 | } | |
80 | ||
81 | int mesh_init(struct net_device *soft_iface) | |
82 | { | |
83 | struct bat_priv *bat_priv = netdev_priv(soft_iface); | |
84 | ||
c6c8fea2 SE |
85 | spin_lock_init(&bat_priv->forw_bat_list_lock); |
86 | spin_lock_init(&bat_priv->forw_bcast_list_lock); | |
87 | spin_lock_init(&bat_priv->hna_lhash_lock); | |
88 | spin_lock_init(&bat_priv->hna_ghash_lock); | |
89 | spin_lock_init(&bat_priv->gw_list_lock); | |
90 | spin_lock_init(&bat_priv->vis_hash_lock); | |
91 | spin_lock_init(&bat_priv->vis_list_lock); | |
92 | spin_lock_init(&bat_priv->softif_neigh_lock); | |
61906ae8 | 93 | spin_lock_init(&bat_priv->softif_neigh_vid_lock); |
c6c8fea2 SE |
94 | |
95 | INIT_HLIST_HEAD(&bat_priv->forw_bat_list); | |
96 | INIT_HLIST_HEAD(&bat_priv->forw_bcast_list); | |
97 | INIT_HLIST_HEAD(&bat_priv->gw_list); | |
61906ae8 | 98 | INIT_HLIST_HEAD(&bat_priv->softif_neigh_vids); |
c6c8fea2 SE |
99 | |
100 | if (originator_init(bat_priv) < 1) | |
101 | goto err; | |
102 | ||
103 | if (hna_local_init(bat_priv) < 1) | |
104 | goto err; | |
105 | ||
106 | if (hna_global_init(bat_priv) < 1) | |
107 | goto err; | |
108 | ||
109 | hna_local_add(soft_iface, soft_iface->dev_addr); | |
110 | ||
111 | if (vis_init(bat_priv) < 1) | |
112 | goto err; | |
113 | ||
114 | atomic_set(&bat_priv->mesh_state, MESH_ACTIVE); | |
115 | goto end; | |
116 | ||
117 | err: | |
118 | pr_err("Unable to allocate memory for mesh information structures: " | |
119 | "out of mem ?\n"); | |
120 | mesh_free(soft_iface); | |
121 | return -1; | |
122 | ||
123 | end: | |
124 | return 0; | |
125 | } | |
126 | ||
127 | void mesh_free(struct net_device *soft_iface) | |
128 | { | |
129 | struct bat_priv *bat_priv = netdev_priv(soft_iface); | |
130 | ||
131 | atomic_set(&bat_priv->mesh_state, MESH_DEACTIVATING); | |
132 | ||
133 | purge_outstanding_packets(bat_priv, NULL); | |
134 | ||
135 | vis_quit(bat_priv); | |
136 | ||
137 | gw_node_purge(bat_priv); | |
138 | originator_free(bat_priv); | |
139 | ||
140 | hna_local_free(bat_priv); | |
141 | hna_global_free(bat_priv); | |
142 | ||
143 | softif_neigh_purge(bat_priv); | |
144 | ||
145 | atomic_set(&bat_priv->mesh_state, MESH_INACTIVE); | |
146 | } | |
147 | ||
148 | void inc_module_count(void) | |
149 | { | |
150 | try_module_get(THIS_MODULE); | |
151 | } | |
152 | ||
153 | void dec_module_count(void) | |
154 | { | |
155 | module_put(THIS_MODULE); | |
156 | } | |
157 | ||
158 | int is_my_mac(uint8_t *addr) | |
159 | { | |
e6c10f43 | 160 | struct hard_iface *hard_iface; |
c6c8fea2 SE |
161 | |
162 | rcu_read_lock(); | |
e6c10f43 ML |
163 | list_for_each_entry_rcu(hard_iface, &hardif_list, list) { |
164 | if (hard_iface->if_status != IF_ACTIVE) | |
c6c8fea2 SE |
165 | continue; |
166 | ||
e6c10f43 | 167 | if (compare_eth(hard_iface->net_dev->dev_addr, addr)) { |
c6c8fea2 SE |
168 | rcu_read_unlock(); |
169 | return 1; | |
170 | } | |
171 | } | |
172 | rcu_read_unlock(); | |
173 | return 0; | |
174 | ||
175 | } | |
176 | ||
177 | module_init(batman_init); | |
178 | module_exit(batman_exit); | |
179 | ||
180 | MODULE_LICENSE("GPL"); | |
181 | ||
182 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
183 | MODULE_DESCRIPTION(DRIVER_DESC); | |
184 | MODULE_SUPPORTED_DEVICE(DRIVER_DEVICE); | |
185 | #ifdef REVISION_VERSION | |
186 | MODULE_VERSION(SOURCE_VERSION "-" REVISION_VERSION); | |
187 | #else | |
188 | MODULE_VERSION(SOURCE_VERSION); | |
189 | #endif |