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" | |
1c280471 | 35 | #include "bat_algo.h" |
c6c8fea2 | 36 | |
c3caf519 SE |
37 | |
38 | /* List manipulations on hardif_list have to be rtnl_lock()'ed, | |
39 | * list traversals just rcu-locked */ | |
4389e47a | 40 | struct list_head hardif_list; |
1c280471 ML |
41 | char bat_routing_algo[20] = "BATMAN IV"; |
42 | static struct hlist_head bat_algo_list; | |
c6c8fea2 SE |
43 | |
44 | unsigned char broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
45 | ||
46 | struct workqueue_struct *bat_event_workqueue; | |
47 | ||
48 | static int __init batman_init(void) | |
49 | { | |
4389e47a | 50 | INIT_LIST_HEAD(&hardif_list); |
1c280471 ML |
51 | INIT_HLIST_HEAD(&bat_algo_list); |
52 | ||
53 | bat_iv_init(); | |
c6c8fea2 SE |
54 | |
55 | /* the name should not be longer than 10 chars - see | |
56 | * http://lwn.net/Articles/23634/ */ | |
57 | bat_event_workqueue = create_singlethread_workqueue("bat_events"); | |
58 | ||
59 | if (!bat_event_workqueue) | |
60 | return -ENOMEM; | |
61 | ||
62 | bat_socket_init(); | |
63 | debugfs_init(); | |
64 | ||
65 | register_netdevice_notifier(&hard_if_notifier); | |
66 | ||
44c4349a SE |
67 | pr_info("B.A.T.M.A.N. advanced %s (compatibility version %i) " |
68 | "loaded\n", SOURCE_VERSION, COMPAT_VERSION); | |
c6c8fea2 SE |
69 | |
70 | return 0; | |
71 | } | |
72 | ||
73 | static void __exit batman_exit(void) | |
74 | { | |
75 | debugfs_destroy(); | |
76 | unregister_netdevice_notifier(&hard_if_notifier); | |
77 | hardif_remove_interfaces(); | |
78 | ||
79 | flush_workqueue(bat_event_workqueue); | |
80 | destroy_workqueue(bat_event_workqueue); | |
81 | bat_event_workqueue = NULL; | |
82 | ||
83 | rcu_barrier(); | |
84 | } | |
85 | ||
86 | int mesh_init(struct net_device *soft_iface) | |
87 | { | |
88 | struct bat_priv *bat_priv = netdev_priv(soft_iface); | |
89 | ||
c6c8fea2 SE |
90 | spin_lock_init(&bat_priv->forw_bat_list_lock); |
91 | spin_lock_init(&bat_priv->forw_bcast_list_lock); | |
a73105b8 AQ |
92 | spin_lock_init(&bat_priv->tt_changes_list_lock); |
93 | spin_lock_init(&bat_priv->tt_req_list_lock); | |
cc47f66e | 94 | spin_lock_init(&bat_priv->tt_roam_list_lock); |
a73105b8 | 95 | spin_lock_init(&bat_priv->tt_buff_lock); |
c6c8fea2 SE |
96 | spin_lock_init(&bat_priv->gw_list_lock); |
97 | spin_lock_init(&bat_priv->vis_hash_lock); | |
98 | spin_lock_init(&bat_priv->vis_list_lock); | |
99 | spin_lock_init(&bat_priv->softif_neigh_lock); | |
61906ae8 | 100 | spin_lock_init(&bat_priv->softif_neigh_vid_lock); |
c6c8fea2 SE |
101 | |
102 | INIT_HLIST_HEAD(&bat_priv->forw_bat_list); | |
103 | INIT_HLIST_HEAD(&bat_priv->forw_bcast_list); | |
104 | INIT_HLIST_HEAD(&bat_priv->gw_list); | |
61906ae8 | 105 | INIT_HLIST_HEAD(&bat_priv->softif_neigh_vids); |
a73105b8 AQ |
106 | INIT_LIST_HEAD(&bat_priv->tt_changes_list); |
107 | INIT_LIST_HEAD(&bat_priv->tt_req_list); | |
cc47f66e | 108 | INIT_LIST_HEAD(&bat_priv->tt_roam_list); |
c6c8fea2 SE |
109 | |
110 | if (originator_init(bat_priv) < 1) | |
111 | goto err; | |
112 | ||
a73105b8 | 113 | if (tt_init(bat_priv) < 1) |
c6c8fea2 SE |
114 | goto err; |
115 | ||
bc279080 | 116 | tt_local_add(soft_iface, soft_iface->dev_addr, NULL_IFINDEX); |
c6c8fea2 SE |
117 | |
118 | if (vis_init(bat_priv) < 1) | |
119 | goto err; | |
120 | ||
2265c141 | 121 | atomic_set(&bat_priv->gw_reselect, 0); |
c6c8fea2 SE |
122 | atomic_set(&bat_priv->mesh_state, MESH_ACTIVE); |
123 | goto end; | |
124 | ||
125 | err: | |
c6c8fea2 SE |
126 | mesh_free(soft_iface); |
127 | return -1; | |
128 | ||
129 | end: | |
130 | return 0; | |
131 | } | |
132 | ||
133 | void mesh_free(struct net_device *soft_iface) | |
134 | { | |
135 | struct bat_priv *bat_priv = netdev_priv(soft_iface); | |
136 | ||
137 | atomic_set(&bat_priv->mesh_state, MESH_DEACTIVATING); | |
138 | ||
139 | purge_outstanding_packets(bat_priv, NULL); | |
140 | ||
141 | vis_quit(bat_priv); | |
142 | ||
143 | gw_node_purge(bat_priv); | |
144 | originator_free(bat_priv); | |
145 | ||
a73105b8 | 146 | tt_free(bat_priv); |
c6c8fea2 SE |
147 | |
148 | softif_neigh_purge(bat_priv); | |
149 | ||
150 | atomic_set(&bat_priv->mesh_state, MESH_INACTIVE); | |
151 | } | |
152 | ||
153 | void inc_module_count(void) | |
154 | { | |
155 | try_module_get(THIS_MODULE); | |
156 | } | |
157 | ||
158 | void dec_module_count(void) | |
159 | { | |
160 | module_put(THIS_MODULE); | |
161 | } | |
162 | ||
747e4221 | 163 | int is_my_mac(const uint8_t *addr) |
c6c8fea2 | 164 | { |
747e4221 | 165 | const struct hard_iface *hard_iface; |
c6c8fea2 SE |
166 | |
167 | rcu_read_lock(); | |
e6c10f43 ML |
168 | list_for_each_entry_rcu(hard_iface, &hardif_list, list) { |
169 | if (hard_iface->if_status != IF_ACTIVE) | |
c6c8fea2 SE |
170 | continue; |
171 | ||
e6c10f43 | 172 | if (compare_eth(hard_iface->net_dev->dev_addr, addr)) { |
c6c8fea2 SE |
173 | rcu_read_unlock(); |
174 | return 1; | |
175 | } | |
176 | } | |
177 | rcu_read_unlock(); | |
178 | return 0; | |
c6c8fea2 SE |
179 | } |
180 | ||
1c280471 ML |
181 | static struct bat_algo_ops *bat_algo_get(char *name) |
182 | { | |
183 | struct bat_algo_ops *bat_algo_ops = NULL, *bat_algo_ops_tmp; | |
184 | struct hlist_node *node; | |
185 | ||
186 | hlist_for_each_entry(bat_algo_ops_tmp, node, &bat_algo_list, list) { | |
187 | if (strcmp(bat_algo_ops_tmp->name, name) != 0) | |
188 | continue; | |
189 | ||
190 | bat_algo_ops = bat_algo_ops_tmp; | |
191 | break; | |
192 | } | |
193 | ||
194 | return bat_algo_ops; | |
195 | } | |
196 | ||
197 | int bat_algo_register(struct bat_algo_ops *bat_algo_ops) | |
198 | { | |
199 | struct bat_algo_ops *bat_algo_ops_tmp; | |
200 | int ret = -1; | |
201 | ||
202 | bat_algo_ops_tmp = bat_algo_get(bat_algo_ops->name); | |
203 | if (bat_algo_ops_tmp) { | |
204 | pr_info("Trying to register already registered routing " | |
205 | "algorithm: %s\n", bat_algo_ops->name); | |
206 | goto out; | |
207 | } | |
208 | ||
01c4224b ML |
209 | /* all algorithms must implement all ops (for now) */ |
210 | if (!bat_algo_ops->bat_ogm_init || | |
211 | !bat_algo_ops->bat_ogm_init_primary || | |
212 | !bat_algo_ops->bat_ogm_update_mac || | |
213 | !bat_algo_ops->bat_ogm_schedule || | |
214 | !bat_algo_ops->bat_ogm_emit || | |
215 | !bat_algo_ops->bat_ogm_receive) { | |
216 | pr_info("Routing algo '%s' does not implement required ops\n", | |
217 | bat_algo_ops->name); | |
218 | goto out; | |
219 | } | |
220 | ||
1c280471 ML |
221 | INIT_HLIST_NODE(&bat_algo_ops->list); |
222 | hlist_add_head(&bat_algo_ops->list, &bat_algo_list); | |
223 | ret = 0; | |
224 | ||
225 | out: | |
226 | return ret; | |
227 | } | |
228 | ||
229 | int bat_algo_select(struct bat_priv *bat_priv, char *name) | |
230 | { | |
231 | struct bat_algo_ops *bat_algo_ops; | |
232 | int ret = -1; | |
233 | ||
234 | bat_algo_ops = bat_algo_get(name); | |
235 | if (!bat_algo_ops) | |
236 | goto out; | |
237 | ||
238 | bat_priv->bat_algo_ops = bat_algo_ops; | |
239 | ret = 0; | |
240 | ||
241 | out: | |
242 | return ret; | |
243 | } | |
244 | ||
245 | int bat_algo_seq_print_text(struct seq_file *seq, void *offset) | |
246 | { | |
247 | struct bat_algo_ops *bat_algo_ops; | |
248 | struct hlist_node *node; | |
249 | ||
250 | seq_printf(seq, "Available routing algorithms:\n"); | |
251 | ||
252 | hlist_for_each_entry(bat_algo_ops, node, &bat_algo_list, list) { | |
253 | seq_printf(seq, "%s\n", bat_algo_ops->name); | |
254 | } | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
c6c8fea2 SE |
259 | module_init(batman_init); |
260 | module_exit(batman_exit); | |
261 | ||
262 | MODULE_LICENSE("GPL"); | |
263 | ||
264 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
265 | MODULE_DESCRIPTION(DRIVER_DESC); | |
266 | MODULE_SUPPORTED_DEVICE(DRIVER_DEVICE); | |
c6c8fea2 | 267 | MODULE_VERSION(SOURCE_VERSION); |