Commit | Line | Data |
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0b873931 | 1 | /* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
2 | * |
3 | * Marek Lindner, 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, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
17 | * 02110-1301, USA | |
c6c8fea2 SE |
18 | */ |
19 | ||
95a066d8 SE |
20 | #include <linux/crc32c.h> |
21 | #include <linux/highmem.h> | |
c6c8fea2 | 22 | #include "main.h" |
b706b13b SE |
23 | #include "sysfs.h" |
24 | #include "debugfs.h" | |
c6c8fea2 SE |
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" | |
23721387 | 33 | #include "bridge_loop_avoidance.h" |
2f1dfbe1 | 34 | #include "distributed-arp-table.h" |
c6c8fea2 SE |
35 | #include "vis.h" |
36 | #include "hash.h" | |
1c280471 | 37 | #include "bat_algo.h" |
c6c8fea2 | 38 | |
c3caf519 SE |
39 | |
40 | /* List manipulations on hardif_list have to be rtnl_lock()'ed, | |
9cfc7bd6 SE |
41 | * list traversals just rcu-locked |
42 | */ | |
3193e8fd | 43 | struct list_head batadv_hardif_list; |
ee11ad61 | 44 | static int (*batadv_rx_handler[256])(struct sk_buff *, |
56303d34 | 45 | struct batadv_hard_iface *); |
3193e8fd | 46 | char batadv_routing_algo[20] = "BATMAN_IV"; |
ee11ad61 | 47 | static struct hlist_head batadv_algo_list; |
c6c8fea2 | 48 | |
3193e8fd | 49 | unsigned char batadv_broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; |
c6c8fea2 | 50 | |
3193e8fd | 51 | struct workqueue_struct *batadv_event_workqueue; |
c6c8fea2 | 52 | |
ee11ad61 | 53 | static void batadv_recv_handler_init(void); |
ffa995e0 | 54 | |
ee11ad61 | 55 | static int __init batadv_init(void) |
c6c8fea2 | 56 | { |
3193e8fd | 57 | INIT_LIST_HEAD(&batadv_hardif_list); |
ee11ad61 | 58 | INIT_HLIST_HEAD(&batadv_algo_list); |
1c280471 | 59 | |
ee11ad61 | 60 | batadv_recv_handler_init(); |
ffa995e0 | 61 | |
81c524f7 | 62 | batadv_iv_init(); |
c6c8fea2 | 63 | |
3193e8fd | 64 | batadv_event_workqueue = create_singlethread_workqueue("bat_events"); |
c6c8fea2 | 65 | |
3193e8fd | 66 | if (!batadv_event_workqueue) |
c6c8fea2 SE |
67 | return -ENOMEM; |
68 | ||
9039dc7e | 69 | batadv_socket_init(); |
40a072d7 | 70 | batadv_debugfs_init(); |
c6c8fea2 | 71 | |
9563877e | 72 | register_netdevice_notifier(&batadv_hard_if_notifier); |
c6c8fea2 | 73 | |
86ceb360 | 74 | pr_info("B.A.T.M.A.N. advanced %s (compatibility version %i) loaded\n", |
42d0b044 | 75 | BATADV_SOURCE_VERSION, BATADV_COMPAT_VERSION); |
c6c8fea2 SE |
76 | |
77 | return 0; | |
78 | } | |
79 | ||
ee11ad61 | 80 | static void __exit batadv_exit(void) |
c6c8fea2 | 81 | { |
40a072d7 | 82 | batadv_debugfs_destroy(); |
9563877e SE |
83 | unregister_netdevice_notifier(&batadv_hard_if_notifier); |
84 | batadv_hardif_remove_interfaces(); | |
c6c8fea2 | 85 | |
3193e8fd SE |
86 | flush_workqueue(batadv_event_workqueue); |
87 | destroy_workqueue(batadv_event_workqueue); | |
88 | batadv_event_workqueue = NULL; | |
c6c8fea2 SE |
89 | |
90 | rcu_barrier(); | |
91 | } | |
92 | ||
3193e8fd | 93 | int batadv_mesh_init(struct net_device *soft_iface) |
c6c8fea2 | 94 | { |
56303d34 | 95 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
5346c35e | 96 | int ret; |
c6c8fea2 | 97 | |
c6c8fea2 SE |
98 | spin_lock_init(&bat_priv->forw_bat_list_lock); |
99 | spin_lock_init(&bat_priv->forw_bcast_list_lock); | |
807736f6 SE |
100 | spin_lock_init(&bat_priv->tt.changes_list_lock); |
101 | spin_lock_init(&bat_priv->tt.req_list_lock); | |
102 | spin_lock_init(&bat_priv->tt.roam_list_lock); | |
103 | spin_lock_init(&bat_priv->tt.last_changeset_lock); | |
104 | spin_lock_init(&bat_priv->gw.list_lock); | |
105 | spin_lock_init(&bat_priv->vis.hash_lock); | |
106 | spin_lock_init(&bat_priv->vis.list_lock); | |
c6c8fea2 SE |
107 | |
108 | INIT_HLIST_HEAD(&bat_priv->forw_bat_list); | |
109 | INIT_HLIST_HEAD(&bat_priv->forw_bcast_list); | |
807736f6 SE |
110 | INIT_HLIST_HEAD(&bat_priv->gw.list); |
111 | INIT_LIST_HEAD(&bat_priv->tt.changes_list); | |
112 | INIT_LIST_HEAD(&bat_priv->tt.req_list); | |
113 | INIT_LIST_HEAD(&bat_priv->tt.roam_list); | |
c6c8fea2 | 114 | |
7d211efc | 115 | ret = batadv_originator_init(bat_priv); |
5346c35e | 116 | if (ret < 0) |
c6c8fea2 SE |
117 | goto err; |
118 | ||
08c36d3e | 119 | ret = batadv_tt_init(bat_priv); |
5346c35e | 120 | if (ret < 0) |
c6c8fea2 SE |
121 | goto err; |
122 | ||
42d0b044 SE |
123 | batadv_tt_local_add(soft_iface, soft_iface->dev_addr, |
124 | BATADV_NULL_IFINDEX); | |
c6c8fea2 | 125 | |
d0f714f4 | 126 | ret = batadv_vis_init(bat_priv); |
5346c35e | 127 | if (ret < 0) |
c6c8fea2 SE |
128 | goto err; |
129 | ||
08adf151 | 130 | ret = batadv_bla_init(bat_priv); |
5346c35e | 131 | if (ret < 0) |
23721387 SW |
132 | goto err; |
133 | ||
2f1dfbe1 AQ |
134 | ret = batadv_dat_init(bat_priv); |
135 | if (ret < 0) | |
136 | goto err; | |
137 | ||
807736f6 | 138 | atomic_set(&bat_priv->gw.reselect, 0); |
39c75a51 | 139 | atomic_set(&bat_priv->mesh_state, BATADV_MESH_ACTIVE); |
5346c35e SE |
140 | |
141 | return 0; | |
c6c8fea2 SE |
142 | |
143 | err: | |
3193e8fd | 144 | batadv_mesh_free(soft_iface); |
5346c35e | 145 | return ret; |
c6c8fea2 SE |
146 | } |
147 | ||
3193e8fd | 148 | void batadv_mesh_free(struct net_device *soft_iface) |
c6c8fea2 | 149 | { |
56303d34 | 150 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
c6c8fea2 | 151 | |
39c75a51 | 152 | atomic_set(&bat_priv->mesh_state, BATADV_MESH_DEACTIVATING); |
c6c8fea2 | 153 | |
9455e34c | 154 | batadv_purge_outstanding_packets(bat_priv, NULL); |
c6c8fea2 | 155 | |
d0f714f4 | 156 | batadv_vis_quit(bat_priv); |
c6c8fea2 | 157 | |
7cf06bc6 | 158 | batadv_gw_node_purge(bat_priv); |
7d211efc | 159 | batadv_originator_free(bat_priv); |
c6c8fea2 | 160 | |
08c36d3e | 161 | batadv_tt_free(bat_priv); |
c6c8fea2 | 162 | |
08adf151 | 163 | batadv_bla_free(bat_priv); |
23721387 | 164 | |
2f1dfbe1 AQ |
165 | batadv_dat_free(bat_priv); |
166 | ||
f8214865 MH |
167 | free_percpu(bat_priv->bat_counters); |
168 | ||
39c75a51 | 169 | atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE); |
c6c8fea2 SE |
170 | } |
171 | ||
3193e8fd | 172 | int batadv_is_my_mac(const uint8_t *addr) |
c6c8fea2 | 173 | { |
56303d34 | 174 | const struct batadv_hard_iface *hard_iface; |
c6c8fea2 SE |
175 | |
176 | rcu_read_lock(); | |
3193e8fd | 177 | list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { |
e9a4f295 | 178 | if (hard_iface->if_status != BATADV_IF_ACTIVE) |
c6c8fea2 SE |
179 | continue; |
180 | ||
1eda58bf | 181 | if (batadv_compare_eth(hard_iface->net_dev->dev_addr, addr)) { |
c6c8fea2 SE |
182 | rcu_read_unlock(); |
183 | return 1; | |
184 | } | |
185 | } | |
186 | rcu_read_unlock(); | |
187 | return 0; | |
c6c8fea2 SE |
188 | } |
189 | ||
30da63a6 ML |
190 | /** |
191 | * batadv_seq_print_text_primary_if_get - called from debugfs table printing | |
192 | * function that requires the primary interface | |
193 | * @seq: debugfs table seq_file struct | |
194 | * | |
195 | * Returns primary interface if found or NULL otherwise. | |
196 | */ | |
197 | struct batadv_hard_iface * | |
198 | batadv_seq_print_text_primary_if_get(struct seq_file *seq) | |
199 | { | |
200 | struct net_device *net_dev = (struct net_device *)seq->private; | |
201 | struct batadv_priv *bat_priv = netdev_priv(net_dev); | |
202 | struct batadv_hard_iface *primary_if; | |
203 | ||
204 | primary_if = batadv_primary_if_get_selected(bat_priv); | |
205 | ||
206 | if (!primary_if) { | |
207 | seq_printf(seq, | |
208 | "BATMAN mesh %s disabled - please specify interfaces to enable it\n", | |
209 | net_dev->name); | |
210 | goto out; | |
211 | } | |
212 | ||
213 | if (primary_if->if_status == BATADV_IF_ACTIVE) | |
214 | goto out; | |
215 | ||
216 | seq_printf(seq, | |
217 | "BATMAN mesh %s disabled - primary interface not active\n", | |
218 | net_dev->name); | |
219 | batadv_hardif_free_ref(primary_if); | |
220 | primary_if = NULL; | |
221 | ||
222 | out: | |
223 | return primary_if; | |
224 | } | |
225 | ||
ee11ad61 | 226 | static int batadv_recv_unhandled_packet(struct sk_buff *skb, |
56303d34 | 227 | struct batadv_hard_iface *recv_if) |
ffa995e0 ML |
228 | { |
229 | return NET_RX_DROP; | |
230 | } | |
231 | ||
232 | /* incoming packets with the batman ethertype received on any active hard | |
233 | * interface | |
234 | */ | |
3193e8fd SE |
235 | int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev, |
236 | struct packet_type *ptype, | |
237 | struct net_device *orig_dev) | |
ffa995e0 | 238 | { |
56303d34 | 239 | struct batadv_priv *bat_priv; |
96412690 | 240 | struct batadv_ogm_packet *batadv_ogm_packet; |
56303d34 | 241 | struct batadv_hard_iface *hard_iface; |
ffa995e0 ML |
242 | uint8_t idx; |
243 | int ret; | |
244 | ||
56303d34 SE |
245 | hard_iface = container_of(ptype, struct batadv_hard_iface, |
246 | batman_adv_ptype); | |
ffa995e0 ML |
247 | skb = skb_share_check(skb, GFP_ATOMIC); |
248 | ||
249 | /* skb was released by skb_share_check() */ | |
250 | if (!skb) | |
251 | goto err_out; | |
252 | ||
253 | /* packet should hold at least type and version */ | |
254 | if (unlikely(!pskb_may_pull(skb, 2))) | |
255 | goto err_free; | |
256 | ||
257 | /* expect a valid ethernet header here. */ | |
258 | if (unlikely(skb->mac_len != ETH_HLEN || !skb_mac_header(skb))) | |
259 | goto err_free; | |
260 | ||
261 | if (!hard_iface->soft_iface) | |
262 | goto err_free; | |
263 | ||
264 | bat_priv = netdev_priv(hard_iface->soft_iface); | |
265 | ||
39c75a51 | 266 | if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) |
ffa995e0 ML |
267 | goto err_free; |
268 | ||
269 | /* discard frames on not active interfaces */ | |
e9a4f295 | 270 | if (hard_iface->if_status != BATADV_IF_ACTIVE) |
ffa995e0 ML |
271 | goto err_free; |
272 | ||
96412690 | 273 | batadv_ogm_packet = (struct batadv_ogm_packet *)skb->data; |
ffa995e0 | 274 | |
96412690 | 275 | if (batadv_ogm_packet->header.version != BATADV_COMPAT_VERSION) { |
39c75a51 | 276 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf | 277 | "Drop packet: incompatible batman version (%i)\n", |
96412690 | 278 | batadv_ogm_packet->header.version); |
ffa995e0 ML |
279 | goto err_free; |
280 | } | |
281 | ||
282 | /* all receive handlers return whether they received or reused | |
283 | * the supplied skb. if not, we have to free the skb. | |
284 | */ | |
96412690 | 285 | idx = batadv_ogm_packet->header.packet_type; |
ee11ad61 | 286 | ret = (*batadv_rx_handler[idx])(skb, hard_iface); |
ffa995e0 ML |
287 | |
288 | if (ret == NET_RX_DROP) | |
289 | kfree_skb(skb); | |
290 | ||
291 | /* return NET_RX_SUCCESS in any case as we | |
292 | * most probably dropped the packet for | |
293 | * routing-logical reasons. | |
294 | */ | |
295 | return NET_RX_SUCCESS; | |
296 | ||
297 | err_free: | |
298 | kfree_skb(skb); | |
299 | err_out: | |
300 | return NET_RX_DROP; | |
301 | } | |
302 | ||
ee11ad61 | 303 | static void batadv_recv_handler_init(void) |
ffa995e0 ML |
304 | { |
305 | int i; | |
306 | ||
ee11ad61 SE |
307 | for (i = 0; i < ARRAY_SIZE(batadv_rx_handler); i++) |
308 | batadv_rx_handler[i] = batadv_recv_unhandled_packet; | |
ffa995e0 | 309 | |
ffa995e0 | 310 | /* batman icmp packet */ |
acd34afa | 311 | batadv_rx_handler[BATADV_ICMP] = batadv_recv_icmp_packet; |
7cdcf6dd AQ |
312 | /* unicast with 4 addresses packet */ |
313 | batadv_rx_handler[BATADV_UNICAST_4ADDR] = batadv_recv_unicast_packet; | |
ffa995e0 | 314 | /* unicast packet */ |
acd34afa | 315 | batadv_rx_handler[BATADV_UNICAST] = batadv_recv_unicast_packet; |
ffa995e0 | 316 | /* fragmented unicast packet */ |
acd34afa | 317 | batadv_rx_handler[BATADV_UNICAST_FRAG] = batadv_recv_ucast_frag_packet; |
ffa995e0 | 318 | /* broadcast packet */ |
acd34afa | 319 | batadv_rx_handler[BATADV_BCAST] = batadv_recv_bcast_packet; |
ffa995e0 | 320 | /* vis packet */ |
acd34afa | 321 | batadv_rx_handler[BATADV_VIS] = batadv_recv_vis_packet; |
ffa995e0 | 322 | /* Translation table query (request or response) */ |
acd34afa | 323 | batadv_rx_handler[BATADV_TT_QUERY] = batadv_recv_tt_query; |
ffa995e0 | 324 | /* Roaming advertisement */ |
acd34afa | 325 | batadv_rx_handler[BATADV_ROAM_ADV] = batadv_recv_roam_adv; |
ffa995e0 ML |
326 | } |
327 | ||
56303d34 SE |
328 | int |
329 | batadv_recv_handler_register(uint8_t packet_type, | |
330 | int (*recv_handler)(struct sk_buff *, | |
331 | struct batadv_hard_iface *)) | |
ffa995e0 | 332 | { |
ee11ad61 | 333 | if (batadv_rx_handler[packet_type] != &batadv_recv_unhandled_packet) |
ffa995e0 ML |
334 | return -EBUSY; |
335 | ||
ee11ad61 | 336 | batadv_rx_handler[packet_type] = recv_handler; |
ffa995e0 ML |
337 | return 0; |
338 | } | |
339 | ||
3193e8fd | 340 | void batadv_recv_handler_unregister(uint8_t packet_type) |
ffa995e0 | 341 | { |
ee11ad61 | 342 | batadv_rx_handler[packet_type] = batadv_recv_unhandled_packet; |
ffa995e0 ML |
343 | } |
344 | ||
56303d34 | 345 | static struct batadv_algo_ops *batadv_algo_get(char *name) |
1c280471 | 346 | { |
56303d34 | 347 | struct batadv_algo_ops *bat_algo_ops = NULL, *bat_algo_ops_tmp; |
1c280471 | 348 | |
b67bfe0d | 349 | hlist_for_each_entry(bat_algo_ops_tmp, &batadv_algo_list, list) { |
1c280471 ML |
350 | if (strcmp(bat_algo_ops_tmp->name, name) != 0) |
351 | continue; | |
352 | ||
353 | bat_algo_ops = bat_algo_ops_tmp; | |
354 | break; | |
355 | } | |
356 | ||
357 | return bat_algo_ops; | |
358 | } | |
359 | ||
56303d34 | 360 | int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops) |
1c280471 | 361 | { |
56303d34 | 362 | struct batadv_algo_ops *bat_algo_ops_tmp; |
5346c35e | 363 | int ret; |
1c280471 | 364 | |
ee11ad61 | 365 | bat_algo_ops_tmp = batadv_algo_get(bat_algo_ops->name); |
1c280471 | 366 | if (bat_algo_ops_tmp) { |
86ceb360 SE |
367 | pr_info("Trying to register already registered routing algorithm: %s\n", |
368 | bat_algo_ops->name); | |
5346c35e | 369 | ret = -EEXIST; |
1c280471 ML |
370 | goto out; |
371 | } | |
372 | ||
01c4224b | 373 | /* all algorithms must implement all ops (for now) */ |
c2aca022 | 374 | if (!bat_algo_ops->bat_iface_enable || |
00a50076 | 375 | !bat_algo_ops->bat_iface_disable || |
c3229398 | 376 | !bat_algo_ops->bat_iface_update_mac || |
cd8b78e7 | 377 | !bat_algo_ops->bat_primary_iface_set || |
01c4224b | 378 | !bat_algo_ops->bat_ogm_schedule || |
c3e29312 | 379 | !bat_algo_ops->bat_ogm_emit) { |
01c4224b ML |
380 | pr_info("Routing algo '%s' does not implement required ops\n", |
381 | bat_algo_ops->name); | |
5346c35e | 382 | ret = -EINVAL; |
01c4224b ML |
383 | goto out; |
384 | } | |
385 | ||
1c280471 | 386 | INIT_HLIST_NODE(&bat_algo_ops->list); |
ee11ad61 | 387 | hlist_add_head(&bat_algo_ops->list, &batadv_algo_list); |
1c280471 ML |
388 | ret = 0; |
389 | ||
390 | out: | |
391 | return ret; | |
392 | } | |
393 | ||
56303d34 | 394 | int batadv_algo_select(struct batadv_priv *bat_priv, char *name) |
1c280471 | 395 | { |
56303d34 | 396 | struct batadv_algo_ops *bat_algo_ops; |
5346c35e | 397 | int ret = -EINVAL; |
1c280471 | 398 | |
ee11ad61 | 399 | bat_algo_ops = batadv_algo_get(name); |
1c280471 ML |
400 | if (!bat_algo_ops) |
401 | goto out; | |
402 | ||
403 | bat_priv->bat_algo_ops = bat_algo_ops; | |
404 | ret = 0; | |
405 | ||
406 | out: | |
407 | return ret; | |
408 | } | |
409 | ||
3193e8fd | 410 | int batadv_algo_seq_print_text(struct seq_file *seq, void *offset) |
1c280471 | 411 | { |
56303d34 | 412 | struct batadv_algo_ops *bat_algo_ops; |
1c280471 ML |
413 | |
414 | seq_printf(seq, "Available routing algorithms:\n"); | |
415 | ||
b67bfe0d | 416 | hlist_for_each_entry(bat_algo_ops, &batadv_algo_list, list) { |
1c280471 ML |
417 | seq_printf(seq, "%s\n", bat_algo_ops->name); |
418 | } | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
95a066d8 SE |
423 | /** |
424 | * batadv_skb_crc32 - calculate CRC32 of the whole packet and skip bytes in | |
425 | * the header | |
426 | * @skb: skb pointing to fragmented socket buffers | |
427 | * @payload_ptr: Pointer to position inside the head buffer of the skb | |
428 | * marking the start of the data to be CRC'ed | |
429 | * | |
430 | * payload_ptr must always point to an address in the skb head buffer and not to | |
431 | * a fragment. | |
432 | */ | |
433 | __be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr) | |
434 | { | |
435 | u32 crc = 0; | |
436 | unsigned int from; | |
437 | unsigned int to = skb->len; | |
438 | struct skb_seq_state st; | |
439 | const u8 *data; | |
440 | unsigned int len; | |
441 | unsigned int consumed = 0; | |
442 | ||
443 | from = (unsigned int)(payload_ptr - skb->data); | |
444 | ||
445 | skb_prepare_seq_read(skb, from, to, &st); | |
446 | while ((len = skb_seq_read(consumed, &data, &st)) != 0) { | |
447 | crc = crc32c(crc, data, len); | |
448 | consumed += len; | |
449 | } | |
450 | skb_abort_seq_read(&st); | |
451 | ||
452 | return htonl(crc); | |
453 | } | |
454 | ||
ee11ad61 | 455 | static int batadv_param_set_ra(const char *val, const struct kernel_param *kp) |
d419be1f | 456 | { |
56303d34 | 457 | struct batadv_algo_ops *bat_algo_ops; |
d8cb5486 ML |
458 | char *algo_name = (char *)val; |
459 | size_t name_len = strlen(algo_name); | |
d419be1f | 460 | |
d8cb5486 ML |
461 | if (algo_name[name_len - 1] == '\n') |
462 | algo_name[name_len - 1] = '\0'; | |
463 | ||
ee11ad61 | 464 | bat_algo_ops = batadv_algo_get(algo_name); |
d419be1f | 465 | if (!bat_algo_ops) { |
d8cb5486 | 466 | pr_err("Routing algorithm '%s' is not supported\n", algo_name); |
d419be1f ML |
467 | return -EINVAL; |
468 | } | |
469 | ||
d8cb5486 | 470 | return param_set_copystring(algo_name, kp); |
d419be1f ML |
471 | } |
472 | ||
ee11ad61 SE |
473 | static const struct kernel_param_ops batadv_param_ops_ra = { |
474 | .set = batadv_param_set_ra, | |
d419be1f ML |
475 | .get = param_get_string, |
476 | }; | |
477 | ||
ee11ad61 | 478 | static struct kparam_string batadv_param_string_ra = { |
3193e8fd SE |
479 | .maxlen = sizeof(batadv_routing_algo), |
480 | .string = batadv_routing_algo, | |
d419be1f ML |
481 | }; |
482 | ||
ee11ad61 SE |
483 | module_param_cb(routing_algo, &batadv_param_ops_ra, &batadv_param_string_ra, |
484 | 0644); | |
485 | module_init(batadv_init); | |
486 | module_exit(batadv_exit); | |
c6c8fea2 SE |
487 | |
488 | MODULE_LICENSE("GPL"); | |
489 | ||
42d0b044 SE |
490 | MODULE_AUTHOR(BATADV_DRIVER_AUTHOR); |
491 | MODULE_DESCRIPTION(BATADV_DRIVER_DESC); | |
492 | MODULE_SUPPORTED_DEVICE(BATADV_DRIVER_DEVICE); | |
493 | MODULE_VERSION(BATADV_SOURCE_VERSION); |