Commit | Line | Data |
---|---|---|
c6c8fea2 | 1 | /* |
64afe353 | 2 | * Copyright (C) 2009-2011 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
3 | * |
4 | * Marek Lindner | |
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 "gateway_client.h" | |
24 | #include "gateway_common.h" | |
25 | #include "hard-interface.h" | |
26 | #include <linux/ip.h> | |
27 | #include <linux/ipv6.h> | |
28 | #include <linux/udp.h> | |
29 | #include <linux/if_vlan.h> | |
30 | ||
25b6d3c1 | 31 | static void gw_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 SE |
32 | { |
33 | struct gw_node *gw_node; | |
34 | ||
25b6d3c1 | 35 | gw_node = container_of(rcu, struct gw_node, rcu); |
c6c8fea2 SE |
36 | kfree(gw_node); |
37 | } | |
38 | ||
25b6d3c1 | 39 | static void gw_node_free_ref(struct gw_node *gw_node) |
c6c8fea2 | 40 | { |
25b6d3c1 ML |
41 | if (atomic_dec_and_test(&gw_node->refcount)) |
42 | call_rcu(&gw_node->rcu, gw_node_free_rcu); | |
c6c8fea2 SE |
43 | } |
44 | ||
45 | void *gw_get_selected(struct bat_priv *bat_priv) | |
46 | { | |
5d02b3cd LL |
47 | struct gw_node *curr_gateway_tmp; |
48 | struct orig_node *orig_node = NULL; | |
c6c8fea2 | 49 | |
5d02b3cd LL |
50 | rcu_read_lock(); |
51 | curr_gateway_tmp = rcu_dereference(bat_priv->curr_gw); | |
c6c8fea2 | 52 | if (!curr_gateway_tmp) |
5d02b3cd LL |
53 | goto out; |
54 | ||
55 | orig_node = curr_gateway_tmp->orig_node; | |
c6c8fea2 | 56 | |
43c70ad5 LL |
57 | if (orig_node) |
58 | kref_get(&orig_node->refcount); | |
59 | ||
5d02b3cd LL |
60 | out: |
61 | rcu_read_unlock(); | |
62 | return orig_node; | |
c6c8fea2 SE |
63 | } |
64 | ||
65 | void gw_deselect(struct bat_priv *bat_priv) | |
66 | { | |
5d02b3cd | 67 | struct gw_node *gw_node; |
c6c8fea2 | 68 | |
5d02b3cd LL |
69 | spin_lock_bh(&bat_priv->gw_list_lock); |
70 | gw_node = rcu_dereference(bat_priv->curr_gw); | |
71 | rcu_assign_pointer(bat_priv->curr_gw, NULL); | |
72 | spin_unlock_bh(&bat_priv->gw_list_lock); | |
c6c8fea2 SE |
73 | |
74 | if (gw_node) | |
25b6d3c1 | 75 | gw_node_free_ref(gw_node); |
c6c8fea2 SE |
76 | } |
77 | ||
25b6d3c1 | 78 | static void gw_select(struct bat_priv *bat_priv, struct gw_node *new_gw_node) |
c6c8fea2 | 79 | { |
5d02b3cd | 80 | struct gw_node *curr_gw_node; |
c6c8fea2 | 81 | |
25b6d3c1 ML |
82 | if (new_gw_node && !atomic_inc_not_zero(&new_gw_node->refcount)) |
83 | new_gw_node = NULL; | |
c6c8fea2 | 84 | |
5d02b3cd LL |
85 | spin_lock_bh(&bat_priv->gw_list_lock); |
86 | curr_gw_node = rcu_dereference(bat_priv->curr_gw); | |
87 | rcu_assign_pointer(bat_priv->curr_gw, new_gw_node); | |
88 | spin_unlock_bh(&bat_priv->gw_list_lock); | |
25b6d3c1 ML |
89 | |
90 | if (curr_gw_node) | |
91 | gw_node_free_ref(curr_gw_node); | |
c6c8fea2 SE |
92 | } |
93 | ||
94 | void gw_election(struct bat_priv *bat_priv) | |
95 | { | |
96 | struct hlist_node *node; | |
5d02b3cd | 97 | struct gw_node *gw_node, *curr_gw, *curr_gw_tmp = NULL; |
c6c8fea2 SE |
98 | uint8_t max_tq = 0; |
99 | uint32_t max_gw_factor = 0, tmp_gw_factor = 0; | |
100 | int down, up; | |
101 | ||
102 | /** | |
103 | * The batman daemon checks here if we already passed a full originator | |
104 | * cycle in order to make sure we don't choose the first gateway we | |
105 | * hear about. This check is based on the daemon's uptime which we | |
106 | * don't have. | |
107 | **/ | |
108 | if (atomic_read(&bat_priv->gw_mode) != GW_MODE_CLIENT) | |
109 | return; | |
110 | ||
5d02b3cd LL |
111 | rcu_read_lock(); |
112 | curr_gw = rcu_dereference(bat_priv->curr_gw); | |
113 | if (curr_gw) { | |
114 | rcu_read_unlock(); | |
c6c8fea2 | 115 | return; |
5d02b3cd | 116 | } |
c6c8fea2 | 117 | |
c6c8fea2 | 118 | if (hlist_empty(&bat_priv->gw_list)) { |
c6c8fea2 | 119 | |
5d02b3cd LL |
120 | if (curr_gw) { |
121 | rcu_read_unlock(); | |
c6c8fea2 SE |
122 | bat_dbg(DBG_BATMAN, bat_priv, |
123 | "Removing selected gateway - " | |
124 | "no gateway in range\n"); | |
125 | gw_deselect(bat_priv); | |
5d02b3cd LL |
126 | } else |
127 | rcu_read_unlock(); | |
c6c8fea2 SE |
128 | |
129 | return; | |
130 | } | |
131 | ||
132 | hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) { | |
133 | if (!gw_node->orig_node->router) | |
134 | continue; | |
135 | ||
136 | if (gw_node->deleted) | |
137 | continue; | |
138 | ||
139 | switch (atomic_read(&bat_priv->gw_sel_class)) { | |
140 | case 1: /* fast connection */ | |
141 | gw_bandwidth_to_kbit(gw_node->orig_node->gw_flags, | |
142 | &down, &up); | |
143 | ||
144 | tmp_gw_factor = (gw_node->orig_node->router->tq_avg * | |
145 | gw_node->orig_node->router->tq_avg * | |
146 | down * 100 * 100) / | |
147 | (TQ_LOCAL_WINDOW_SIZE * | |
148 | TQ_LOCAL_WINDOW_SIZE * 64); | |
149 | ||
150 | if ((tmp_gw_factor > max_gw_factor) || | |
151 | ((tmp_gw_factor == max_gw_factor) && | |
152 | (gw_node->orig_node->router->tq_avg > max_tq))) | |
153 | curr_gw_tmp = gw_node; | |
154 | break; | |
155 | ||
156 | default: /** | |
157 | * 2: stable connection (use best statistic) | |
158 | * 3: fast-switch (use best statistic but change as | |
159 | * soon as a better gateway appears) | |
160 | * XX: late-switch (use best statistic but change as | |
161 | * soon as a better gateway appears which has | |
162 | * $routing_class more tq points) | |
163 | **/ | |
164 | if (gw_node->orig_node->router->tq_avg > max_tq) | |
165 | curr_gw_tmp = gw_node; | |
166 | break; | |
167 | } | |
168 | ||
169 | if (gw_node->orig_node->router->tq_avg > max_tq) | |
170 | max_tq = gw_node->orig_node->router->tq_avg; | |
171 | ||
172 | if (tmp_gw_factor > max_gw_factor) | |
173 | max_gw_factor = tmp_gw_factor; | |
174 | } | |
175 | ||
5d02b3cd LL |
176 | if (curr_gw != curr_gw_tmp) { |
177 | if ((curr_gw) && (!curr_gw_tmp)) | |
c6c8fea2 SE |
178 | bat_dbg(DBG_BATMAN, bat_priv, |
179 | "Removing selected gateway - " | |
180 | "no gateway in range\n"); | |
5d02b3cd | 181 | else if ((!curr_gw) && (curr_gw_tmp)) |
c6c8fea2 SE |
182 | bat_dbg(DBG_BATMAN, bat_priv, |
183 | "Adding route to gateway %pM " | |
184 | "(gw_flags: %i, tq: %i)\n", | |
185 | curr_gw_tmp->orig_node->orig, | |
186 | curr_gw_tmp->orig_node->gw_flags, | |
187 | curr_gw_tmp->orig_node->router->tq_avg); | |
188 | else | |
189 | bat_dbg(DBG_BATMAN, bat_priv, | |
190 | "Changing route to gateway %pM " | |
191 | "(gw_flags: %i, tq: %i)\n", | |
192 | curr_gw_tmp->orig_node->orig, | |
193 | curr_gw_tmp->orig_node->gw_flags, | |
194 | curr_gw_tmp->orig_node->router->tq_avg); | |
195 | ||
25b6d3c1 | 196 | gw_select(bat_priv, curr_gw_tmp); |
c6c8fea2 SE |
197 | } |
198 | ||
199 | rcu_read_unlock(); | |
c6c8fea2 SE |
200 | } |
201 | ||
202 | void gw_check_election(struct bat_priv *bat_priv, struct orig_node *orig_node) | |
203 | { | |
5d02b3cd | 204 | struct gw_node *curr_gateway_tmp; |
c6c8fea2 SE |
205 | uint8_t gw_tq_avg, orig_tq_avg; |
206 | ||
5d02b3cd LL |
207 | rcu_read_lock(); |
208 | curr_gateway_tmp = rcu_dereference(bat_priv->curr_gw); | |
c6c8fea2 | 209 | if (!curr_gateway_tmp) |
5d02b3cd | 210 | goto out_rcu; |
c6c8fea2 SE |
211 | |
212 | if (!curr_gateway_tmp->orig_node) | |
5d02b3cd | 213 | goto deselect_rcu; |
c6c8fea2 SE |
214 | |
215 | if (!curr_gateway_tmp->orig_node->router) | |
5d02b3cd | 216 | goto deselect_rcu; |
c6c8fea2 SE |
217 | |
218 | /* this node already is the gateway */ | |
219 | if (curr_gateway_tmp->orig_node == orig_node) | |
5d02b3cd | 220 | goto out_rcu; |
c6c8fea2 SE |
221 | |
222 | if (!orig_node->router) | |
5d02b3cd | 223 | goto out_rcu; |
c6c8fea2 SE |
224 | |
225 | gw_tq_avg = curr_gateway_tmp->orig_node->router->tq_avg; | |
5d02b3cd LL |
226 | rcu_read_unlock(); |
227 | ||
c6c8fea2 SE |
228 | orig_tq_avg = orig_node->router->tq_avg; |
229 | ||
230 | /* the TQ value has to be better */ | |
231 | if (orig_tq_avg < gw_tq_avg) | |
5d02b3cd | 232 | goto out; |
c6c8fea2 SE |
233 | |
234 | /** | |
235 | * if the routing class is greater than 3 the value tells us how much | |
236 | * greater the TQ value of the new gateway must be | |
237 | **/ | |
238 | if ((atomic_read(&bat_priv->gw_sel_class) > 3) && | |
239 | (orig_tq_avg - gw_tq_avg < atomic_read(&bat_priv->gw_sel_class))) | |
5d02b3cd | 240 | goto out; |
c6c8fea2 SE |
241 | |
242 | bat_dbg(DBG_BATMAN, bat_priv, | |
243 | "Restarting gateway selection: better gateway found (tq curr: " | |
244 | "%i, tq new: %i)\n", | |
245 | gw_tq_avg, orig_tq_avg); | |
5d02b3cd | 246 | goto deselect; |
c6c8fea2 | 247 | |
5d02b3cd LL |
248 | out_rcu: |
249 | rcu_read_unlock(); | |
250 | goto out; | |
251 | deselect_rcu: | |
252 | rcu_read_unlock(); | |
c6c8fea2 SE |
253 | deselect: |
254 | gw_deselect(bat_priv); | |
5d02b3cd LL |
255 | out: |
256 | return; | |
c6c8fea2 SE |
257 | } |
258 | ||
259 | static void gw_node_add(struct bat_priv *bat_priv, | |
260 | struct orig_node *orig_node, uint8_t new_gwflags) | |
261 | { | |
262 | struct gw_node *gw_node; | |
263 | int down, up; | |
264 | ||
265 | gw_node = kmalloc(sizeof(struct gw_node), GFP_ATOMIC); | |
266 | if (!gw_node) | |
267 | return; | |
268 | ||
269 | memset(gw_node, 0, sizeof(struct gw_node)); | |
270 | INIT_HLIST_NODE(&gw_node->list); | |
271 | gw_node->orig_node = orig_node; | |
25b6d3c1 | 272 | atomic_set(&gw_node->refcount, 1); |
c6c8fea2 SE |
273 | |
274 | spin_lock_bh(&bat_priv->gw_list_lock); | |
275 | hlist_add_head_rcu(&gw_node->list, &bat_priv->gw_list); | |
276 | spin_unlock_bh(&bat_priv->gw_list_lock); | |
277 | ||
278 | gw_bandwidth_to_kbit(new_gwflags, &down, &up); | |
279 | bat_dbg(DBG_BATMAN, bat_priv, | |
280 | "Found new gateway %pM -> gw_class: %i - %i%s/%i%s\n", | |
281 | orig_node->orig, new_gwflags, | |
282 | (down > 2048 ? down / 1024 : down), | |
283 | (down > 2048 ? "MBit" : "KBit"), | |
284 | (up > 2048 ? up / 1024 : up), | |
285 | (up > 2048 ? "MBit" : "KBit")); | |
286 | } | |
287 | ||
288 | void gw_node_update(struct bat_priv *bat_priv, | |
289 | struct orig_node *orig_node, uint8_t new_gwflags) | |
290 | { | |
291 | struct hlist_node *node; | |
292 | struct gw_node *gw_node; | |
293 | ||
294 | rcu_read_lock(); | |
295 | hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) { | |
296 | if (gw_node->orig_node != orig_node) | |
297 | continue; | |
298 | ||
299 | bat_dbg(DBG_BATMAN, bat_priv, | |
300 | "Gateway class of originator %pM changed from " | |
301 | "%i to %i\n", | |
302 | orig_node->orig, gw_node->orig_node->gw_flags, | |
303 | new_gwflags); | |
304 | ||
305 | gw_node->deleted = 0; | |
306 | ||
307 | if (new_gwflags == 0) { | |
308 | gw_node->deleted = jiffies; | |
309 | bat_dbg(DBG_BATMAN, bat_priv, | |
310 | "Gateway %pM removed from gateway list\n", | |
311 | orig_node->orig); | |
312 | ||
5d02b3cd | 313 | if (gw_node == rcu_dereference(bat_priv->curr_gw)) { |
c6c8fea2 SE |
314 | rcu_read_unlock(); |
315 | gw_deselect(bat_priv); | |
316 | return; | |
317 | } | |
318 | } | |
319 | ||
320 | rcu_read_unlock(); | |
321 | return; | |
322 | } | |
323 | rcu_read_unlock(); | |
324 | ||
325 | if (new_gwflags == 0) | |
326 | return; | |
327 | ||
328 | gw_node_add(bat_priv, orig_node, new_gwflags); | |
329 | } | |
330 | ||
331 | void gw_node_delete(struct bat_priv *bat_priv, struct orig_node *orig_node) | |
332 | { | |
333 | return gw_node_update(bat_priv, orig_node, 0); | |
334 | } | |
335 | ||
336 | void gw_node_purge(struct bat_priv *bat_priv) | |
337 | { | |
338 | struct gw_node *gw_node; | |
339 | struct hlist_node *node, *node_tmp; | |
340 | unsigned long timeout = 2 * PURGE_TIMEOUT * HZ; | |
341 | ||
342 | spin_lock_bh(&bat_priv->gw_list_lock); | |
343 | ||
344 | hlist_for_each_entry_safe(gw_node, node, node_tmp, | |
345 | &bat_priv->gw_list, list) { | |
346 | if (((!gw_node->deleted) || | |
347 | (time_before(jiffies, gw_node->deleted + timeout))) && | |
348 | atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE) | |
349 | continue; | |
350 | ||
5d02b3cd | 351 | if (rcu_dereference(bat_priv->curr_gw) == gw_node) |
c6c8fea2 SE |
352 | gw_deselect(bat_priv); |
353 | ||
354 | hlist_del_rcu(&gw_node->list); | |
25b6d3c1 | 355 | gw_node_free_ref(gw_node); |
c6c8fea2 SE |
356 | } |
357 | ||
358 | ||
359 | spin_unlock_bh(&bat_priv->gw_list_lock); | |
360 | } | |
361 | ||
362 | static int _write_buffer_text(struct bat_priv *bat_priv, | |
363 | struct seq_file *seq, struct gw_node *gw_node) | |
364 | { | |
5d02b3cd LL |
365 | struct gw_node *curr_gw; |
366 | int down, up, ret; | |
c6c8fea2 SE |
367 | |
368 | gw_bandwidth_to_kbit(gw_node->orig_node->gw_flags, &down, &up); | |
369 | ||
5d02b3cd LL |
370 | rcu_read_lock(); |
371 | curr_gw = rcu_dereference(bat_priv->curr_gw); | |
372 | ||
373 | ret = seq_printf(seq, "%s %pM (%3i) %pM [%10s]: %3i - %i%s/%i%s\n", | |
374 | (curr_gw == gw_node ? "=>" : " "), | |
c6c8fea2 SE |
375 | gw_node->orig_node->orig, |
376 | gw_node->orig_node->router->tq_avg, | |
377 | gw_node->orig_node->router->addr, | |
378 | gw_node->orig_node->router->if_incoming->net_dev->name, | |
379 | gw_node->orig_node->gw_flags, | |
380 | (down > 2048 ? down / 1024 : down), | |
381 | (down > 2048 ? "MBit" : "KBit"), | |
382 | (up > 2048 ? up / 1024 : up), | |
383 | (up > 2048 ? "MBit" : "KBit")); | |
5d02b3cd LL |
384 | |
385 | rcu_read_unlock(); | |
386 | return ret; | |
c6c8fea2 SE |
387 | } |
388 | ||
389 | int gw_client_seq_print_text(struct seq_file *seq, void *offset) | |
390 | { | |
391 | struct net_device *net_dev = (struct net_device *)seq->private; | |
392 | struct bat_priv *bat_priv = netdev_priv(net_dev); | |
393 | struct gw_node *gw_node; | |
394 | struct hlist_node *node; | |
395 | int gw_count = 0; | |
396 | ||
397 | if (!bat_priv->primary_if) { | |
398 | ||
399 | return seq_printf(seq, "BATMAN mesh %s disabled - please " | |
400 | "specify interfaces to enable it\n", | |
401 | net_dev->name); | |
402 | } | |
403 | ||
404 | if (bat_priv->primary_if->if_status != IF_ACTIVE) { | |
405 | ||
406 | return seq_printf(seq, "BATMAN mesh %s disabled - " | |
407 | "primary interface not active\n", | |
408 | net_dev->name); | |
409 | } | |
410 | ||
411 | seq_printf(seq, " %-12s (%s/%i) %17s [%10s]: gw_class ... " | |
412 | "[B.A.T.M.A.N. adv %s%s, MainIF/MAC: %s/%pM (%s)]\n", | |
413 | "Gateway", "#", TQ_MAX_VALUE, "Nexthop", | |
414 | "outgoingIF", SOURCE_VERSION, REVISION_VERSION_STR, | |
415 | bat_priv->primary_if->net_dev->name, | |
416 | bat_priv->primary_if->net_dev->dev_addr, net_dev->name); | |
417 | ||
418 | rcu_read_lock(); | |
419 | hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) { | |
420 | if (gw_node->deleted) | |
421 | continue; | |
422 | ||
423 | if (!gw_node->orig_node->router) | |
424 | continue; | |
425 | ||
426 | _write_buffer_text(bat_priv, seq, gw_node); | |
427 | gw_count++; | |
428 | } | |
429 | rcu_read_unlock(); | |
430 | ||
431 | if (gw_count == 0) | |
432 | seq_printf(seq, "No gateways in range ...\n"); | |
433 | ||
434 | return 0; | |
435 | } | |
436 | ||
437 | int gw_is_target(struct bat_priv *bat_priv, struct sk_buff *skb) | |
438 | { | |
439 | struct ethhdr *ethhdr; | |
440 | struct iphdr *iphdr; | |
441 | struct ipv6hdr *ipv6hdr; | |
442 | struct udphdr *udphdr; | |
443 | unsigned int header_len = 0; | |
444 | ||
445 | if (atomic_read(&bat_priv->gw_mode) == GW_MODE_OFF) | |
446 | return 0; | |
447 | ||
448 | /* check for ethernet header */ | |
449 | if (!pskb_may_pull(skb, header_len + ETH_HLEN)) | |
450 | return 0; | |
451 | ethhdr = (struct ethhdr *)skb->data; | |
452 | header_len += ETH_HLEN; | |
453 | ||
454 | /* check for initial vlan header */ | |
455 | if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) { | |
456 | if (!pskb_may_pull(skb, header_len + VLAN_HLEN)) | |
457 | return 0; | |
458 | ethhdr = (struct ethhdr *)(skb->data + VLAN_HLEN); | |
459 | header_len += VLAN_HLEN; | |
460 | } | |
461 | ||
462 | /* check for ip header */ | |
463 | switch (ntohs(ethhdr->h_proto)) { | |
464 | case ETH_P_IP: | |
465 | if (!pskb_may_pull(skb, header_len + sizeof(struct iphdr))) | |
466 | return 0; | |
467 | iphdr = (struct iphdr *)(skb->data + header_len); | |
468 | header_len += iphdr->ihl * 4; | |
469 | ||
470 | /* check for udp header */ | |
471 | if (iphdr->protocol != IPPROTO_UDP) | |
472 | return 0; | |
473 | ||
474 | break; | |
475 | case ETH_P_IPV6: | |
476 | if (!pskb_may_pull(skb, header_len + sizeof(struct ipv6hdr))) | |
477 | return 0; | |
478 | ipv6hdr = (struct ipv6hdr *)(skb->data + header_len); | |
479 | header_len += sizeof(struct ipv6hdr); | |
480 | ||
481 | /* check for udp header */ | |
482 | if (ipv6hdr->nexthdr != IPPROTO_UDP) | |
483 | return 0; | |
484 | ||
485 | break; | |
486 | default: | |
487 | return 0; | |
488 | } | |
489 | ||
490 | if (!pskb_may_pull(skb, header_len + sizeof(struct udphdr))) | |
491 | return 0; | |
492 | udphdr = (struct udphdr *)(skb->data + header_len); | |
493 | header_len += sizeof(struct udphdr); | |
494 | ||
495 | /* check for bootp port */ | |
496 | if ((ntohs(ethhdr->h_proto) == ETH_P_IP) && | |
497 | (ntohs(udphdr->dest) != 67)) | |
498 | return 0; | |
499 | ||
500 | if ((ntohs(ethhdr->h_proto) == ETH_P_IPV6) && | |
501 | (ntohs(udphdr->dest) != 547)) | |
502 | return 0; | |
503 | ||
504 | if (atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER) | |
505 | return -1; | |
506 | ||
5d02b3cd LL |
507 | rcu_read_lock(); |
508 | if (!rcu_dereference(bat_priv->curr_gw)) { | |
509 | rcu_read_unlock(); | |
c6c8fea2 | 510 | return 0; |
5d02b3cd LL |
511 | } |
512 | rcu_read_unlock(); | |
c6c8fea2 SE |
513 | |
514 | return 1; | |
515 | } |