2 * Copyright (c) 2008, 2009 open80211s Ltd.
3 * Authors: Luis Carlos Cobo <luisca@cozybit.com>
4 * Javier Cardona <javier@cozybit.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <asm/unaligned.h>
12 #include "ieee80211_i.h"
15 #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
16 #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
17 #define IEEE80211_MESH_RANN_INTERVAL (1 * HZ)
19 #define MESHCONF_PP_OFFSET 0 /* Path Selection Protocol */
20 #define MESHCONF_PM_OFFSET 1 /* Path Selection Metric */
21 #define MESHCONF_CC_OFFSET 2 /* Congestion Control Mode */
22 #define MESHCONF_SP_OFFSET 3 /* Synchronization Protocol */
23 #define MESHCONF_AUTH_OFFSET 4 /* Authentication Protocol */
24 #define MESHCONF_CAPAB_OFFSET 6
25 #define MESHCONF_CAPAB_ACCEPT_PLINKS 0x01
26 #define MESHCONF_CAPAB_FORWARDING 0x08
28 #define TMR_RUNNING_HK 0
29 #define TMR_RUNNING_MP 1
30 #define TMR_RUNNING_MPR 2
33 static struct kmem_cache *rm_cache;
35 void ieee80211s_init(void)
39 rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry),
43 void ieee80211s_stop(void)
45 mesh_pathtbl_unregister();
46 kmem_cache_destroy(rm_cache);
49 static void ieee80211_mesh_housekeeping_timer(unsigned long data)
51 struct ieee80211_sub_if_data *sdata = (void *) data;
52 struct ieee80211_local *local = sdata->local;
53 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
55 set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
57 if (local->quiescing) {
58 set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
62 ieee80211_queue_work(&local->hw, &ifmsh->work);
66 * mesh_matches_local - check if the config of a mesh point matches ours
68 * @ie: information elements of a management frame from the mesh peer
69 * @sdata: local mesh subif
71 * This function checks if the mesh configuration of a mesh point matches the
72 * local mesh configuration, i.e. if both nodes belong to the same mesh network.
74 bool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_data *sdata)
76 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
79 * As support for each feature is added, check for matching
80 * - On mesh config capabilities
81 * - Power Save Support En
82 * - Sync support enabled
83 * - Sync support active
84 * - Sync support required from peer
86 * - Power management control on fc
88 if (ifmsh->mesh_id_len == ie->mesh_id_len &&
89 memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
90 (ifmsh->mesh_pp_id == *(ie->mesh_config + MESHCONF_PP_OFFSET))&&
91 (ifmsh->mesh_pm_id == *(ie->mesh_config + MESHCONF_PM_OFFSET))&&
92 (ifmsh->mesh_cc_id == *(ie->mesh_config + MESHCONF_CC_OFFSET))&&
93 (ifmsh->mesh_sp_id == *(ie->mesh_config + MESHCONF_SP_OFFSET))&&
94 (ifmsh->mesh_auth_id == *(ie->mesh_config +
95 MESHCONF_AUTH_OFFSET)))
102 * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
104 * @ie: information elements of a management frame from the mesh peer
106 bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
108 return (*(ie->mesh_config + MESHCONF_CAPAB_OFFSET) &
109 MESHCONF_CAPAB_ACCEPT_PLINKS) != 0;
113 * mesh_accept_plinks_update: update accepting_plink in local mesh beacons
115 * @sdata: mesh interface in which mesh beacons are going to be updated
117 void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
121 /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
122 * the mesh interface might be able to establish plinks with peers that
123 * are already on the table but are not on PLINK_ESTAB state. However,
124 * in general the mesh interface is not accepting peer link requests
125 * from new peers, and that must be reflected in the beacon
127 free_plinks = mesh_plink_availables(sdata);
129 if (free_plinks != sdata->u.mesh.accepting_plinks)
130 ieee80211_mesh_housekeeping_timer((unsigned long) sdata);
133 void mesh_ids_set_default(struct ieee80211_if_mesh *sta)
135 sta->mesh_pp_id = 0; /* HWMP */
136 sta->mesh_pm_id = 0; /* Airtime */
137 sta->mesh_cc_id = 0; /* Disabled */
138 sta->mesh_sp_id = 0; /* Neighbor Offset */
139 sta->mesh_auth_id = 0; /* Disabled */
142 int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
146 sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
147 if (!sdata->u.mesh.rmc)
149 sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1;
150 for (i = 0; i < RMC_BUCKETS; i++)
151 INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i].list);
155 void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
157 struct mesh_rmc *rmc = sdata->u.mesh.rmc;
158 struct rmc_entry *p, *n;
161 if (!sdata->u.mesh.rmc)
164 for (i = 0; i < RMC_BUCKETS; i++)
165 list_for_each_entry_safe(p, n, &rmc->bucket[i].list, list) {
167 kmem_cache_free(rm_cache, p);
171 sdata->u.mesh.rmc = NULL;
175 * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
177 * @sa: source address
178 * @mesh_hdr: mesh_header
180 * Returns: 0 if the frame is not in the cache, nonzero otherwise.
182 * Checks using the source address and the mesh sequence number if we have
183 * received this frame lately. If the frame is not in the cache, it is added to
186 int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
187 struct ieee80211_sub_if_data *sdata)
189 struct mesh_rmc *rmc = sdata->u.mesh.rmc;
193 struct rmc_entry *p, *n;
195 /* Don't care about endianness since only match matters */
196 memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum));
197 idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask;
198 list_for_each_entry_safe(p, n, &rmc->bucket[idx].list, list) {
200 if (time_after(jiffies, p->exp_time) ||
201 (entries == RMC_QUEUE_MAX_LEN)) {
203 kmem_cache_free(rm_cache, p);
205 } else if ((seqnum == p->seqnum)
206 && (memcmp(sa, p->sa, ETH_ALEN) == 0))
210 p = kmem_cache_alloc(rm_cache, GFP_ATOMIC);
212 printk(KERN_DEBUG "o11s: could not allocate RMC entry\n");
216 p->exp_time = jiffies + RMC_TIMEOUT;
217 memcpy(p->sa, sa, ETH_ALEN);
218 list_add(&p->list, &rmc->bucket[idx].list);
222 void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
224 struct ieee80211_local *local = sdata->local;
225 struct ieee80211_supported_band *sband;
230 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
231 len = sband->n_bitrates;
234 pos = skb_put(skb, len + 2);
235 *pos++ = WLAN_EID_SUPP_RATES;
237 for (i = 0; i < len; i++) {
238 rate = sband->bitrates[i].bitrate;
239 *pos++ = (u8) (rate / 5);
242 if (sband->n_bitrates > len) {
243 pos = skb_put(skb, sband->n_bitrates - len + 2);
244 *pos++ = WLAN_EID_EXT_SUPP_RATES;
245 *pos++ = sband->n_bitrates - len;
246 for (i = len; i < sband->n_bitrates; i++) {
247 rate = sband->bitrates[i].bitrate;
248 *pos++ = (u8) (rate / 5);
252 if (sband->band == IEEE80211_BAND_2GHZ) {
253 pos = skb_put(skb, 2 + 1);
254 *pos++ = WLAN_EID_DS_PARAMS;
256 *pos++ = ieee80211_frequency_to_channel(local->hw.conf.channel->center_freq);
259 pos = skb_put(skb, 2 + sdata->u.mesh.mesh_id_len);
260 *pos++ = WLAN_EID_MESH_ID;
261 *pos++ = sdata->u.mesh.mesh_id_len;
262 if (sdata->u.mesh.mesh_id_len)
263 memcpy(pos, sdata->u.mesh.mesh_id, sdata->u.mesh.mesh_id_len);
265 pos = skb_put(skb, 2 + IEEE80211_MESH_CONFIG_LEN);
266 *pos++ = WLAN_EID_MESH_CONFIG;
267 *pos++ = IEEE80211_MESH_CONFIG_LEN;
269 /* Active path selection protocol ID */
270 *pos++ = sdata->u.mesh.mesh_pp_id;
272 /* Active path selection metric ID */
273 *pos++ = sdata->u.mesh.mesh_pm_id;
275 /* Congestion control mode identifier */
276 *pos++ = sdata->u.mesh.mesh_cc_id;
278 /* Synchronization protocol identifier */
279 *pos++ = sdata->u.mesh.mesh_sp_id;
281 /* Authentication Protocol identifier */
282 *pos++ = sdata->u.mesh.mesh_auth_id;
284 /* Mesh Formation Info - number of neighbors */
285 neighbors = atomic_read(&sdata->u.mesh.mshstats.estab_plinks);
286 /* Number of neighbor mesh STAs or 15 whichever is smaller */
287 neighbors = (neighbors > 15) ? 15 : neighbors;
288 *pos++ = neighbors << 1;
290 /* Mesh capability */
291 sdata->u.mesh.accepting_plinks = mesh_plink_availables(sdata);
292 *pos = MESHCONF_CAPAB_FORWARDING;
293 *pos++ |= sdata->u.mesh.accepting_plinks ?
294 MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
300 u32 mesh_table_hash(u8 *addr, struct ieee80211_sub_if_data *sdata, struct mesh_table *tbl)
302 /* Use last four bytes of hw addr and interface index as hash index */
303 return jhash_2words(*(u32 *)(addr+2), sdata->dev->ifindex, tbl->hash_rnd)
307 struct mesh_table *mesh_table_alloc(int size_order)
310 struct mesh_table *newtbl;
312 newtbl = kmalloc(sizeof(struct mesh_table), GFP_KERNEL);
316 newtbl->hash_buckets = kzalloc(sizeof(struct hlist_head) *
317 (1 << size_order), GFP_KERNEL);
319 if (!newtbl->hash_buckets) {
324 newtbl->hashwlock = kmalloc(sizeof(spinlock_t) *
325 (1 << size_order), GFP_KERNEL);
326 if (!newtbl->hashwlock) {
327 kfree(newtbl->hash_buckets);
332 newtbl->size_order = size_order;
333 newtbl->hash_mask = (1 << size_order) - 1;
334 atomic_set(&newtbl->entries, 0);
335 get_random_bytes(&newtbl->hash_rnd,
336 sizeof(newtbl->hash_rnd));
337 for (i = 0; i <= newtbl->hash_mask; i++)
338 spin_lock_init(&newtbl->hashwlock[i]);
344 static void ieee80211_mesh_path_timer(unsigned long data)
346 struct ieee80211_sub_if_data *sdata =
347 (struct ieee80211_sub_if_data *) data;
348 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
349 struct ieee80211_local *local = sdata->local;
351 if (local->quiescing) {
352 set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
356 ieee80211_queue_work(&local->hw, &ifmsh->work);
359 static void ieee80211_mesh_path_root_timer(unsigned long data)
361 struct ieee80211_sub_if_data *sdata =
362 (struct ieee80211_sub_if_data *) data;
363 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
364 struct ieee80211_local *local = sdata->local;
366 set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
368 if (local->quiescing) {
369 set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
373 ieee80211_queue_work(&local->hw, &ifmsh->work);
376 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh)
378 if (ifmsh->mshcfg.dot11MeshHWMPRootMode)
379 set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
381 clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
382 /* stop running timer */
383 del_timer_sync(&ifmsh->mesh_path_root_timer);
388 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
389 * @hdr: 802.11 frame header
390 * @fc: frame control field
391 * @meshda: destination address in the mesh
392 * @meshsa: source address address in the mesh. Same as TA, as frame is
393 * locally originated.
395 * Return the length of the 802.11 (does not include a mesh control header)
397 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc, char
398 *meshda, char *meshsa) {
399 if (is_multicast_ether_addr(meshda)) {
400 *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
402 memcpy(hdr->addr1, meshda, ETH_ALEN);
403 memcpy(hdr->addr2, meshsa, ETH_ALEN);
404 memcpy(hdr->addr3, meshsa, ETH_ALEN);
407 *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS |
408 IEEE80211_FCTL_TODS);
410 memset(hdr->addr1, 0, ETH_ALEN); /* RA is resolved later */
411 memcpy(hdr->addr2, meshsa, ETH_ALEN);
412 memcpy(hdr->addr3, meshda, ETH_ALEN);
413 memcpy(hdr->addr4, meshsa, ETH_ALEN);
419 * ieee80211_new_mesh_header - create a new mesh header
420 * @meshhdr: uninitialized mesh header
421 * @sdata: mesh interface to be used
422 * @addr4: addr4 of the mesh frame (1st in ae header)
424 * @addr5: addr5 of the mesh frame (1st or 2nd in ae header)
425 * may be NULL unless addr6 is present
426 * @addr6: addr6 of the mesh frame (2nd or 3rd in ae header)
427 * may be NULL unless addr5 is present
429 * Return the header length.
431 int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
432 struct ieee80211_sub_if_data *sdata, char *addr4,
433 char *addr5, char *addr6)
436 memset(meshhdr, 0, sizeof(meshhdr));
437 meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
438 put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum);
439 sdata->u.mesh.mesh_seqnum++;
441 meshhdr->flags |= MESH_FLAGS_AE_A4;
443 memcpy(meshhdr->eaddr1, addr4, ETH_ALEN);
445 if (addr5 && addr6) {
446 meshhdr->flags |= MESH_FLAGS_AE_A5_A6;
447 aelen += 2 * ETH_ALEN;
449 memcpy(meshhdr->eaddr1, addr5, ETH_ALEN);
450 memcpy(meshhdr->eaddr2, addr6, ETH_ALEN);
452 memcpy(meshhdr->eaddr2, addr5, ETH_ALEN);
453 memcpy(meshhdr->eaddr3, addr6, ETH_ALEN);
459 static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
460 struct ieee80211_if_mesh *ifmsh)
464 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
465 printk(KERN_DEBUG "%s: running mesh housekeeping\n",
469 ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
470 mesh_path_expire(sdata);
472 free_plinks = mesh_plink_availables(sdata);
473 if (free_plinks != sdata->u.mesh.accepting_plinks)
474 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
476 mod_timer(&ifmsh->housekeeping_timer,
477 round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL));
480 static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
482 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
484 mesh_path_tx_root_frame(sdata);
485 mod_timer(&ifmsh->mesh_path_root_timer,
486 round_jiffies(jiffies + IEEE80211_MESH_RANN_INTERVAL));
490 void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
492 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
494 /* might restart the timer but that doesn't matter */
495 cancel_work_sync(&ifmsh->work);
497 /* use atomic bitops in case both timers fire at the same time */
499 if (del_timer_sync(&ifmsh->housekeeping_timer))
500 set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
501 if (del_timer_sync(&ifmsh->mesh_path_timer))
502 set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
503 if (del_timer_sync(&ifmsh->mesh_path_root_timer))
504 set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
507 void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata)
509 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
511 if (test_and_clear_bit(TMR_RUNNING_HK, &ifmsh->timers_running))
512 add_timer(&ifmsh->housekeeping_timer);
513 if (test_and_clear_bit(TMR_RUNNING_MP, &ifmsh->timers_running))
514 add_timer(&ifmsh->mesh_path_timer);
515 if (test_and_clear_bit(TMR_RUNNING_MPR, &ifmsh->timers_running))
516 add_timer(&ifmsh->mesh_path_root_timer);
517 ieee80211_mesh_root_setup(ifmsh);
521 void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
523 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
524 struct ieee80211_local *local = sdata->local;
526 set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
527 ieee80211_mesh_root_setup(ifmsh);
528 ieee80211_queue_work(&local->hw, &ifmsh->work);
529 sdata->vif.bss_conf.beacon_int = MESH_DEFAULT_BEACON_INTERVAL;
530 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON |
531 BSS_CHANGED_BEACON_ENABLED |
532 BSS_CHANGED_BEACON_INT);
535 void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
537 del_timer_sync(&sdata->u.mesh.housekeeping_timer);
538 del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
540 * If the timer fired while we waited for it, it will have
541 * requeued the work. Now the work will be running again
542 * but will not rearm the timer again because it checks
543 * whether the interface is running, which, at this point,
546 cancel_work_sync(&sdata->u.mesh.work);
549 * When we get here, the interface is marked down.
550 * Call synchronize_rcu() to wait for the RX path
551 * should it be using the interface and enqueuing
552 * frames at this very time on another CPU.
554 rcu_barrier(); /* Wait for RX path and call_rcu()'s */
555 skb_queue_purge(&sdata->u.mesh.skb_queue);
558 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
560 struct ieee80211_mgmt *mgmt,
562 struct ieee80211_rx_status *rx_status)
564 struct ieee80211_local *local = sdata->local;
565 struct ieee802_11_elems elems;
566 struct ieee80211_channel *channel;
570 enum ieee80211_band band = rx_status->band;
572 /* ignore ProbeResp to foreign address */
573 if (stype == IEEE80211_STYPE_PROBE_RESP &&
574 compare_ether_addr(mgmt->da, sdata->dev->dev_addr))
577 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
581 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
584 if (elems.ds_params && elems.ds_params_len == 1)
585 freq = ieee80211_channel_to_frequency(elems.ds_params[0]);
587 freq = rx_status->freq;
589 channel = ieee80211_get_channel(local->hw.wiphy, freq);
591 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
594 if (elems.mesh_id && elems.mesh_config &&
595 mesh_matches_local(&elems, sdata)) {
596 supp_rates = ieee80211_sta_get_rates(local, &elems, band);
598 mesh_neighbour_update(mgmt->sa, supp_rates, sdata,
599 mesh_peer_accepts_plinks(&elems));
603 static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
604 struct ieee80211_mgmt *mgmt,
606 struct ieee80211_rx_status *rx_status)
608 switch (mgmt->u.action.category) {
609 case MESH_PLINK_CATEGORY:
610 mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
612 case MESH_PATH_SEL_CATEGORY:
613 mesh_rx_path_sel_frame(sdata, mgmt, len);
618 static void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
621 struct ieee80211_rx_status *rx_status;
622 struct ieee80211_if_mesh *ifmsh;
623 struct ieee80211_mgmt *mgmt;
626 ifmsh = &sdata->u.mesh;
628 rx_status = IEEE80211_SKB_RXCB(skb);
629 mgmt = (struct ieee80211_mgmt *) skb->data;
630 stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
633 case IEEE80211_STYPE_PROBE_RESP:
634 case IEEE80211_STYPE_BEACON:
635 ieee80211_mesh_rx_bcn_presp(sdata, stype, mgmt, skb->len,
638 case IEEE80211_STYPE_ACTION:
639 ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status);
646 static void ieee80211_mesh_work(struct work_struct *work)
648 struct ieee80211_sub_if_data *sdata =
649 container_of(work, struct ieee80211_sub_if_data, u.mesh.work);
650 struct ieee80211_local *local = sdata->local;
651 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
654 if (!netif_running(sdata->dev))
660 while ((skb = skb_dequeue(&ifmsh->skb_queue)))
661 ieee80211_mesh_rx_queued_mgmt(sdata, skb);
663 if (ifmsh->preq_queue_len &&
665 ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval)))
666 mesh_path_start_discovery(sdata);
668 if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags))
669 mesh_mpath_table_grow();
671 if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags))
672 mesh_mpp_table_grow();
674 if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags))
675 ieee80211_mesh_housekeeping(sdata, ifmsh);
677 if (test_and_clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags))
678 ieee80211_mesh_rootpath(sdata);
681 void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
683 struct ieee80211_sub_if_data *sdata;
686 list_for_each_entry_rcu(sdata, &local->interfaces, list)
687 if (ieee80211_vif_is_mesh(&sdata->vif))
688 ieee80211_queue_work(&local->hw, &sdata->u.mesh.work);
692 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
694 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
696 INIT_WORK(&ifmsh->work, ieee80211_mesh_work);
697 setup_timer(&ifmsh->housekeeping_timer,
698 ieee80211_mesh_housekeeping_timer,
699 (unsigned long) sdata);
700 skb_queue_head_init(&sdata->u.mesh.skb_queue);
702 ifmsh->mshcfg.dot11MeshRetryTimeout = MESH_RET_T;
703 ifmsh->mshcfg.dot11MeshConfirmTimeout = MESH_CONF_T;
704 ifmsh->mshcfg.dot11MeshHoldingTimeout = MESH_HOLD_T;
705 ifmsh->mshcfg.dot11MeshMaxRetries = MESH_MAX_RETR;
706 ifmsh->mshcfg.dot11MeshTTL = MESH_TTL;
707 ifmsh->mshcfg.auto_open_plinks = true;
708 ifmsh->mshcfg.dot11MeshMaxPeerLinks =
709 MESH_MAX_ESTAB_PLINKS;
710 ifmsh->mshcfg.dot11MeshHWMPactivePathTimeout =
712 ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval =
714 ifmsh->mshcfg.dot11MeshHWMPnetDiameterTraversalTime =
715 MESH_DIAM_TRAVERSAL_TIME;
716 ifmsh->mshcfg.dot11MeshHWMPmaxPREQretries =
717 MESH_MAX_PREQ_RETRIES;
718 ifmsh->mshcfg.path_refresh_time =
719 MESH_PATH_REFRESH_TIME;
720 ifmsh->mshcfg.min_discovery_timeout =
721 MESH_MIN_DISCOVERY_TIMEOUT;
722 ifmsh->accepting_plinks = true;
725 atomic_set(&ifmsh->mpaths, 0);
726 mesh_rmc_init(sdata);
727 ifmsh->last_preq = jiffies;
728 /* Allocate all mesh structures when creating the first mesh interface. */
731 mesh_ids_set_default(ifmsh);
732 setup_timer(&ifmsh->mesh_path_timer,
733 ieee80211_mesh_path_timer,
734 (unsigned long) sdata);
735 setup_timer(&ifmsh->mesh_path_root_timer,
736 ieee80211_mesh_path_root_timer,
737 (unsigned long) sdata);
738 INIT_LIST_HEAD(&ifmsh->preq_queue.list);
739 spin_lock_init(&ifmsh->mesh_preq_queue_lock);
743 ieee80211_mesh_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
745 struct ieee80211_local *local = sdata->local;
746 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
747 struct ieee80211_mgmt *mgmt;
751 return RX_DROP_MONITOR;
753 mgmt = (struct ieee80211_mgmt *) skb->data;
754 fc = le16_to_cpu(mgmt->frame_control);
756 switch (fc & IEEE80211_FCTL_STYPE) {
757 case IEEE80211_STYPE_ACTION:
758 if (skb->len < IEEE80211_MIN_ACTION_SIZE)
759 return RX_DROP_MONITOR;
761 case IEEE80211_STYPE_PROBE_RESP:
762 case IEEE80211_STYPE_BEACON:
763 skb_queue_tail(&ifmsh->skb_queue, skb);
764 ieee80211_queue_work(&local->hw, &ifmsh->work);