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 <linux/slab.h>
12 #include <asm/unaligned.h>
13 #include "ieee80211_i.h"
16 #define TMR_RUNNING_HK 0
17 #define TMR_RUNNING_MP 1
18 #define TMR_RUNNING_MPR 2
21 static struct kmem_cache *rm_cache;
23 #ifdef CONFIG_MAC80211_MESH
24 bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
26 return (mgmt->u.action.u.mesh_action.action_code ==
27 WLAN_MESH_ACTION_HWMP_PATH_SELECTION);
30 bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
34 void ieee80211s_init(void)
38 rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry),
42 void ieee80211s_stop(void)
44 mesh_pathtbl_unregister();
45 kmem_cache_destroy(rm_cache);
48 static void ieee80211_mesh_housekeeping_timer(unsigned long data)
50 struct ieee80211_sub_if_data *sdata = (void *) data;
51 struct ieee80211_local *local = sdata->local;
52 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
54 set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
56 if (local->quiescing) {
57 set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
61 ieee80211_queue_work(&local->hw, &sdata->work);
65 * mesh_matches_local - check if the config of a mesh point matches ours
67 * @sdata: local mesh subif
68 * @ie: information elements of a management frame from the mesh peer
70 * This function checks if the mesh configuration of a mesh point matches the
71 * local mesh configuration, i.e. if both nodes belong to the same mesh network.
73 bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
74 struct ieee802_11_elems *ie)
76 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
77 struct ieee80211_local *local = sdata->local;
81 * As support for each feature is added, check for matching
82 * - On mesh config capabilities
83 * - Power Save Support En
84 * - Sync support enabled
85 * - Sync support active
86 * - Sync support required from peer
88 * - Power management control on fc
90 if (!(ifmsh->mesh_id_len == ie->mesh_id_len &&
91 memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
92 (ifmsh->mesh_pp_id == ie->mesh_config->meshconf_psel) &&
93 (ifmsh->mesh_pm_id == ie->mesh_config->meshconf_pmetric) &&
94 (ifmsh->mesh_cc_id == ie->mesh_config->meshconf_congest) &&
95 (ifmsh->mesh_sp_id == ie->mesh_config->meshconf_synch) &&
96 (ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth)))
99 ieee80211_sta_get_rates(local, ie, local->oper_channel->band,
102 if (sdata->vif.bss_conf.basic_rates != basic_rates)
105 /* disallow peering with mismatched channel types for now */
106 if (ie->ht_operation &&
107 (local->_oper_channel_type !=
108 ieee80211_ht_oper_to_channel_type(ie->ht_operation)))
117 * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
119 * @ie: information elements of a management frame from the mesh peer
121 bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
123 return (ie->mesh_config->meshconf_cap &
124 MESHCONF_CAPAB_ACCEPT_PLINKS) != 0;
128 * mesh_accept_plinks_update: update accepting_plink in local mesh beacons
130 * @sdata: mesh interface in which mesh beacons are going to be updated
132 void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
136 /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
137 * the mesh interface might be able to establish plinks with peers that
138 * are already on the table but are not on PLINK_ESTAB state. However,
139 * in general the mesh interface is not accepting peer link requests
140 * from new peers, and that must be reflected in the beacon
142 free_plinks = mesh_plink_availables(sdata);
144 if (free_plinks != sdata->u.mesh.accepting_plinks)
145 ieee80211_mesh_housekeeping_timer((unsigned long) sdata);
148 int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
152 sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
153 if (!sdata->u.mesh.rmc)
155 sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1;
156 for (i = 0; i < RMC_BUCKETS; i++)
157 INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i].list);
161 void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
163 struct mesh_rmc *rmc = sdata->u.mesh.rmc;
164 struct rmc_entry *p, *n;
167 if (!sdata->u.mesh.rmc)
170 for (i = 0; i < RMC_BUCKETS; i++)
171 list_for_each_entry_safe(p, n, &rmc->bucket[i].list, list) {
173 kmem_cache_free(rm_cache, p);
177 sdata->u.mesh.rmc = NULL;
181 * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
183 * @sa: source address
184 * @mesh_hdr: mesh_header
186 * Returns: 0 if the frame is not in the cache, nonzero otherwise.
188 * Checks using the source address and the mesh sequence number if we have
189 * received this frame lately. If the frame is not in the cache, it is added to
192 int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
193 struct ieee80211_sub_if_data *sdata)
195 struct mesh_rmc *rmc = sdata->u.mesh.rmc;
199 struct rmc_entry *p, *n;
201 /* Don't care about endianness since only match matters */
202 memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum));
203 idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask;
204 list_for_each_entry_safe(p, n, &rmc->bucket[idx].list, list) {
206 if (time_after(jiffies, p->exp_time) ||
207 (entries == RMC_QUEUE_MAX_LEN)) {
209 kmem_cache_free(rm_cache, p);
211 } else if ((seqnum == p->seqnum) &&
212 (compare_ether_addr(sa, p->sa) == 0))
216 p = kmem_cache_alloc(rm_cache, GFP_ATOMIC);
221 p->exp_time = jiffies + RMC_TIMEOUT;
222 memcpy(p->sa, sa, ETH_ALEN);
223 list_add(&p->list, &rmc->bucket[idx].list);
228 mesh_add_meshconf_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
230 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
232 u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie);
234 if (skb_tailroom(skb) < 2 + meshconf_len)
237 pos = skb_put(skb, 2 + meshconf_len);
238 *pos++ = WLAN_EID_MESH_CONFIG;
239 *pos++ = meshconf_len;
241 /* Active path selection protocol ID */
242 *pos++ = ifmsh->mesh_pp_id;
243 /* Active path selection metric ID */
244 *pos++ = ifmsh->mesh_pm_id;
245 /* Congestion control mode identifier */
246 *pos++ = ifmsh->mesh_cc_id;
247 /* Synchronization protocol identifier */
248 *pos++ = ifmsh->mesh_sp_id;
249 /* Authentication Protocol identifier */
250 *pos++ = ifmsh->mesh_auth_id;
251 /* Mesh Formation Info - number of neighbors */
252 neighbors = atomic_read(&ifmsh->mshstats.estab_plinks);
253 /* Number of neighbor mesh STAs or 15 whichever is smaller */
254 neighbors = (neighbors > 15) ? 15 : neighbors;
255 *pos++ = neighbors << 1;
256 /* Mesh capability */
257 ifmsh->accepting_plinks = mesh_plink_availables(sdata);
258 *pos = MESHCONF_CAPAB_FORWARDING;
259 *pos |= ifmsh->accepting_plinks ?
260 MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
261 *pos++ |= ifmsh->adjusting_tbtt ?
262 MESHCONF_CAPAB_TBTT_ADJUSTING : 0x00;
269 mesh_add_meshid_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
271 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
274 if (skb_tailroom(skb) < 2 + ifmsh->mesh_id_len)
277 pos = skb_put(skb, 2 + ifmsh->mesh_id_len);
278 *pos++ = WLAN_EID_MESH_ID;
279 *pos++ = ifmsh->mesh_id_len;
280 if (ifmsh->mesh_id_len)
281 memcpy(pos, ifmsh->mesh_id, ifmsh->mesh_id_len);
287 mesh_add_vendor_ies(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
289 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
293 if (!ifmsh->ie || !ifmsh->ie_len)
296 /* fast-forward to vendor IEs */
297 offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0);
300 len = ifmsh->ie_len - offset;
301 data = ifmsh->ie + offset;
302 if (skb_tailroom(skb) < len)
304 memcpy(skb_put(skb, len), data, len);
311 mesh_add_rsn_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
313 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
317 if (!ifmsh->ie || !ifmsh->ie_len)
322 while (data < ifmsh->ie + ifmsh->ie_len) {
323 if (*data == WLAN_EID_RSN) {
331 if (skb_tailroom(skb) < len)
333 memcpy(skb_put(skb, len), data, len);
339 int mesh_add_ds_params_ie(struct sk_buff *skb,
340 struct ieee80211_sub_if_data *sdata)
342 struct ieee80211_local *local = sdata->local;
343 struct ieee80211_supported_band *sband;
346 if (skb_tailroom(skb) < 3)
349 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
350 if (sband->band == IEEE80211_BAND_2GHZ) {
351 pos = skb_put(skb, 2 + 1);
352 *pos++ = WLAN_EID_DS_PARAMS;
354 *pos++ = ieee80211_frequency_to_channel(local->hw.conf.channel->center_freq);
360 int mesh_add_ht_cap_ie(struct sk_buff *skb,
361 struct ieee80211_sub_if_data *sdata)
363 struct ieee80211_local *local = sdata->local;
364 struct ieee80211_supported_band *sband;
367 sband = local->hw.wiphy->bands[local->oper_channel->band];
368 if (!sband->ht_cap.ht_supported ||
369 local->_oper_channel_type == NL80211_CHAN_NO_HT)
372 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap))
375 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap));
376 ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, sband->ht_cap.cap);
381 int mesh_add_ht_oper_ie(struct sk_buff *skb,
382 struct ieee80211_sub_if_data *sdata)
384 struct ieee80211_local *local = sdata->local;
385 struct ieee80211_channel *channel = local->oper_channel;
386 enum nl80211_channel_type channel_type = local->_oper_channel_type;
387 struct ieee80211_supported_band *sband =
388 local->hw.wiphy->bands[channel->band];
389 struct ieee80211_sta_ht_cap *ht_cap = &sband->ht_cap;
392 if (!ht_cap->ht_supported || channel_type == NL80211_CHAN_NO_HT)
395 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_operation))
398 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_operation));
399 ieee80211_ie_build_ht_oper(pos, ht_cap, channel, channel_type);
403 static void ieee80211_mesh_path_timer(unsigned long data)
405 struct ieee80211_sub_if_data *sdata =
406 (struct ieee80211_sub_if_data *) data;
407 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
408 struct ieee80211_local *local = sdata->local;
410 if (local->quiescing) {
411 set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
415 ieee80211_queue_work(&local->hw, &sdata->work);
418 static void ieee80211_mesh_path_root_timer(unsigned long data)
420 struct ieee80211_sub_if_data *sdata =
421 (struct ieee80211_sub_if_data *) data;
422 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
423 struct ieee80211_local *local = sdata->local;
425 set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
427 if (local->quiescing) {
428 set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
432 ieee80211_queue_work(&local->hw, &sdata->work);
435 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh)
437 if (ifmsh->mshcfg.dot11MeshHWMPRootMode)
438 set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
440 clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
441 /* stop running timer */
442 del_timer_sync(&ifmsh->mesh_path_root_timer);
447 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
448 * @hdr: 802.11 frame header
449 * @fc: frame control field
450 * @meshda: destination address in the mesh
451 * @meshsa: source address address in the mesh. Same as TA, as frame is
452 * locally originated.
454 * Return the length of the 802.11 (does not include a mesh control header)
456 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
457 const u8 *meshda, const u8 *meshsa)
459 if (is_multicast_ether_addr(meshda)) {
460 *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
462 memcpy(hdr->addr1, meshda, ETH_ALEN);
463 memcpy(hdr->addr2, meshsa, ETH_ALEN);
464 memcpy(hdr->addr3, meshsa, ETH_ALEN);
467 *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
469 memset(hdr->addr1, 0, ETH_ALEN); /* RA is resolved later */
470 memcpy(hdr->addr2, meshsa, ETH_ALEN);
471 memcpy(hdr->addr3, meshda, ETH_ALEN);
472 memcpy(hdr->addr4, meshsa, ETH_ALEN);
478 * ieee80211_new_mesh_header - create a new mesh header
479 * @meshhdr: uninitialized mesh header
480 * @sdata: mesh interface to be used
481 * @addr4or5: 1st address in the ae header, which may correspond to address 4
482 * (if addr6 is NULL) or address 5 (if addr6 is present). It may
484 * @addr6: 2nd address in the ae header, which corresponds to addr6 of the
487 * Return the header length.
489 int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
490 struct ieee80211_sub_if_data *sdata, char *addr4or5,
494 BUG_ON(!addr4or5 && addr6);
495 memset(meshhdr, 0, sizeof(*meshhdr));
496 meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
497 put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum);
498 sdata->u.mesh.mesh_seqnum++;
499 if (addr4or5 && !addr6) {
500 meshhdr->flags |= MESH_FLAGS_AE_A4;
502 memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
503 } else if (addr4or5 && addr6) {
504 meshhdr->flags |= MESH_FLAGS_AE_A5_A6;
505 aelen += 2 * ETH_ALEN;
506 memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
507 memcpy(meshhdr->eaddr2, addr6, ETH_ALEN);
512 static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
513 struct ieee80211_if_mesh *ifmsh)
517 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
518 printk(KERN_DEBUG "%s: running mesh housekeeping\n",
522 ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
523 mesh_path_expire(sdata);
525 free_plinks = mesh_plink_availables(sdata);
526 if (free_plinks != sdata->u.mesh.accepting_plinks)
527 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
529 mod_timer(&ifmsh->housekeeping_timer,
530 round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL));
533 static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
535 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
537 mesh_path_tx_root_frame(sdata);
538 mod_timer(&ifmsh->mesh_path_root_timer,
539 round_jiffies(TU_TO_EXP_TIME(
540 ifmsh->mshcfg.dot11MeshHWMPRannInterval)));
544 void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
546 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
548 /* use atomic bitops in case all timers fire at the same time */
550 if (del_timer_sync(&ifmsh->housekeeping_timer))
551 set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
552 if (del_timer_sync(&ifmsh->mesh_path_timer))
553 set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
554 if (del_timer_sync(&ifmsh->mesh_path_root_timer))
555 set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
558 void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata)
560 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
562 if (test_and_clear_bit(TMR_RUNNING_HK, &ifmsh->timers_running))
563 add_timer(&ifmsh->housekeeping_timer);
564 if (test_and_clear_bit(TMR_RUNNING_MP, &ifmsh->timers_running))
565 add_timer(&ifmsh->mesh_path_timer);
566 if (test_and_clear_bit(TMR_RUNNING_MPR, &ifmsh->timers_running))
567 add_timer(&ifmsh->mesh_path_root_timer);
568 ieee80211_mesh_root_setup(ifmsh);
572 void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
574 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
575 struct ieee80211_local *local = sdata->local;
577 local->fif_other_bss++;
578 /* mesh ifaces must set allmulti to forward mcast traffic */
579 atomic_inc(&local->iff_allmultis);
580 ieee80211_configure_filter(local);
582 ifmsh->mesh_cc_id = 0; /* Disabled */
583 ifmsh->mesh_auth_id = 0; /* Disabled */
584 /* register sync ops from extensible synchronization framework */
585 ifmsh->sync_ops = ieee80211_mesh_sync_ops_get(ifmsh->mesh_sp_id);
586 ifmsh->adjusting_tbtt = false;
587 ifmsh->sync_offset_clockdrift_max = 0;
588 set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
589 ieee80211_mesh_root_setup(ifmsh);
590 ieee80211_queue_work(&local->hw, &sdata->work);
591 sdata->vif.bss_conf.beacon_int = MESH_DEFAULT_BEACON_INTERVAL;
592 sdata->vif.bss_conf.basic_rates =
593 ieee80211_mandatory_rates(sdata->local,
594 sdata->local->hw.conf.channel->band);
595 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON |
596 BSS_CHANGED_BEACON_ENABLED |
597 BSS_CHANGED_BASIC_RATES |
598 BSS_CHANGED_BEACON_INT);
601 void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
603 struct ieee80211_local *local = sdata->local;
604 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
606 ifmsh->mesh_id_len = 0;
607 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
608 sta_info_flush(local, NULL);
610 del_timer_sync(&sdata->u.mesh.housekeeping_timer);
611 del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
613 * If the timer fired while we waited for it, it will have
614 * requeued the work. Now the work will be running again
615 * but will not rearm the timer again because it checks
616 * whether the interface is running, which, at this point,
619 cancel_work_sync(&sdata->work);
621 local->fif_other_bss--;
622 atomic_dec(&local->iff_allmultis);
623 ieee80211_configure_filter(local);
626 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
628 struct ieee80211_mgmt *mgmt,
630 struct ieee80211_rx_status *rx_status)
632 struct ieee80211_local *local = sdata->local;
633 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
634 struct ieee802_11_elems elems;
635 struct ieee80211_channel *channel;
638 enum ieee80211_band band = rx_status->band;
640 /* ignore ProbeResp to foreign address */
641 if (stype == IEEE80211_STYPE_PROBE_RESP &&
642 compare_ether_addr(mgmt->da, sdata->vif.addr))
645 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
649 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
652 /* ignore beacons from secure mesh peers if our security is off */
653 if (elems.rsn_len && sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE)
656 if (elems.ds_params && elems.ds_params_len == 1)
657 freq = ieee80211_channel_to_frequency(elems.ds_params[0], band);
659 freq = rx_status->freq;
661 channel = ieee80211_get_channel(local->hw.wiphy, freq);
663 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
666 if (elems.mesh_id && elems.mesh_config &&
667 mesh_matches_local(sdata, &elems))
668 mesh_neighbour_update(sdata, mgmt->sa, &elems);
671 ifmsh->sync_ops->rx_bcn_presp(sdata,
672 stype, mgmt, &elems, rx_status);
675 static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
676 struct ieee80211_mgmt *mgmt,
678 struct ieee80211_rx_status *rx_status)
680 switch (mgmt->u.action.category) {
681 case WLAN_CATEGORY_SELF_PROTECTED:
682 switch (mgmt->u.action.u.self_prot.action_code) {
683 case WLAN_SP_MESH_PEERING_OPEN:
684 case WLAN_SP_MESH_PEERING_CLOSE:
685 case WLAN_SP_MESH_PEERING_CONFIRM:
686 mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
690 case WLAN_CATEGORY_MESH_ACTION:
691 if (mesh_action_is_path_sel(mgmt))
692 mesh_rx_path_sel_frame(sdata, mgmt, len);
697 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
700 struct ieee80211_rx_status *rx_status;
701 struct ieee80211_mgmt *mgmt;
704 rx_status = IEEE80211_SKB_RXCB(skb);
705 mgmt = (struct ieee80211_mgmt *) skb->data;
706 stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
709 case IEEE80211_STYPE_PROBE_RESP:
710 case IEEE80211_STYPE_BEACON:
711 ieee80211_mesh_rx_bcn_presp(sdata, stype, mgmt, skb->len,
714 case IEEE80211_STYPE_ACTION:
715 ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status);
720 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
722 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
724 if (ifmsh->preq_queue_len &&
726 ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval)))
727 mesh_path_start_discovery(sdata);
729 if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags))
730 mesh_mpath_table_grow();
732 if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE, &ifmsh->wrkq_flags))
733 mesh_mpp_table_grow();
735 if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags))
736 ieee80211_mesh_housekeeping(sdata, ifmsh);
738 if (test_and_clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags))
739 ieee80211_mesh_rootpath(sdata);
741 if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST, &ifmsh->wrkq_flags))
742 mesh_sync_adjust_tbtt(sdata);
745 void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
747 struct ieee80211_sub_if_data *sdata;
750 list_for_each_entry_rcu(sdata, &local->interfaces, list)
751 if (ieee80211_vif_is_mesh(&sdata->vif))
752 ieee80211_queue_work(&local->hw, &sdata->work);
756 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
758 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
760 setup_timer(&ifmsh->housekeeping_timer,
761 ieee80211_mesh_housekeeping_timer,
762 (unsigned long) sdata);
764 ifmsh->accepting_plinks = true;
767 ifmsh->num_gates = 0;
768 atomic_set(&ifmsh->mpaths, 0);
769 mesh_rmc_init(sdata);
770 ifmsh->last_preq = jiffies;
771 ifmsh->next_perr = jiffies;
772 /* Allocate all mesh structures when creating the first mesh interface. */
775 setup_timer(&ifmsh->mesh_path_timer,
776 ieee80211_mesh_path_timer,
777 (unsigned long) sdata);
778 setup_timer(&ifmsh->mesh_path_root_timer,
779 ieee80211_mesh_path_root_timer,
780 (unsigned long) sdata);
781 INIT_LIST_HEAD(&ifmsh->preq_queue.list);
782 spin_lock_init(&ifmsh->mesh_preq_queue_lock);
783 spin_lock_init(&ifmsh->sync_offset_lock);