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 bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
25 return (mgmt->u.action.u.mesh_action.action_code ==
26 WLAN_MESH_ACTION_HWMP_PATH_SELECTION);
29 void ieee80211s_init(void)
33 rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry),
37 void ieee80211s_stop(void)
39 mesh_pathtbl_unregister();
40 kmem_cache_destroy(rm_cache);
43 static void ieee80211_mesh_housekeeping_timer(unsigned long data)
45 struct ieee80211_sub_if_data *sdata = (void *) data;
46 struct ieee80211_local *local = sdata->local;
47 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
49 set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
51 if (local->quiescing) {
52 set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
56 ieee80211_queue_work(&local->hw, &sdata->work);
60 * mesh_matches_local - check if the config of a mesh point matches ours
62 * @sdata: local mesh subif
63 * @ie: information elements of a management frame from the mesh peer
65 * This function checks if the mesh configuration of a mesh point matches the
66 * local mesh configuration, i.e. if both nodes belong to the same mesh network.
68 bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
69 struct ieee802_11_elems *ie)
71 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
72 struct ieee80211_local *local = sdata->local;
74 struct cfg80211_chan_def sta_chan_def;
77 * As support for each feature is added, check for matching
78 * - On mesh config capabilities
79 * - Power Save Support En
80 * - Sync support enabled
81 * - Sync support active
82 * - Sync support required from peer
84 * - Power management control on fc
86 if (!(ifmsh->mesh_id_len == ie->mesh_id_len &&
87 memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
88 (ifmsh->mesh_pp_id == ie->mesh_config->meshconf_psel) &&
89 (ifmsh->mesh_pm_id == ie->mesh_config->meshconf_pmetric) &&
90 (ifmsh->mesh_cc_id == ie->mesh_config->meshconf_congest) &&
91 (ifmsh->mesh_sp_id == ie->mesh_config->meshconf_synch) &&
92 (ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth)))
95 ieee80211_sta_get_rates(local, ie, ieee80211_get_sdata_band(sdata),
98 if (sdata->vif.bss_conf.basic_rates != basic_rates)
101 ieee80211_ht_oper_to_chandef(sdata->vif.bss_conf.chandef.chan,
102 ie->ht_operation, &sta_chan_def);
104 if (!cfg80211_chandef_compatible(&sdata->vif.bss_conf.chandef,
114 * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
116 * @ie: information elements of a management frame from the mesh peer
118 bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
120 return (ie->mesh_config->meshconf_cap &
121 IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS) != 0;
125 * mesh_accept_plinks_update - update accepting_plink in local mesh beacons
127 * @sdata: mesh interface in which mesh beacons are going to be updated
129 * Returns: beacon changed flag if the beacon content changed.
131 u32 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 sdata->u.mesh.accepting_plinks = free_plinks;
146 changed = BSS_CHANGED_BEACON;
152 int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
156 sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
157 if (!sdata->u.mesh.rmc)
159 sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1;
160 for (i = 0; i < RMC_BUCKETS; i++)
161 INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i]);
165 void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
167 struct mesh_rmc *rmc = sdata->u.mesh.rmc;
168 struct rmc_entry *p, *n;
171 if (!sdata->u.mesh.rmc)
174 for (i = 0; i < RMC_BUCKETS; i++)
175 list_for_each_entry_safe(p, n, &rmc->bucket[i], list) {
177 kmem_cache_free(rm_cache, p);
181 sdata->u.mesh.rmc = NULL;
185 * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
187 * @sa: source address
188 * @mesh_hdr: mesh_header
190 * Returns: 0 if the frame is not in the cache, nonzero otherwise.
192 * Checks using the source address and the mesh sequence number if we have
193 * received this frame lately. If the frame is not in the cache, it is added to
196 int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
197 struct ieee80211_sub_if_data *sdata)
199 struct mesh_rmc *rmc = sdata->u.mesh.rmc;
203 struct rmc_entry *p, *n;
205 /* Don't care about endianness since only match matters */
206 memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum));
207 idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask;
208 list_for_each_entry_safe(p, n, &rmc->bucket[idx], list) {
210 if (time_after(jiffies, p->exp_time) ||
211 (entries == RMC_QUEUE_MAX_LEN)) {
213 kmem_cache_free(rm_cache, p);
215 } else if ((seqnum == p->seqnum) &&
216 (ether_addr_equal(sa, p->sa)))
220 p = kmem_cache_alloc(rm_cache, GFP_ATOMIC);
225 p->exp_time = jiffies + RMC_TIMEOUT;
226 memcpy(p->sa, sa, ETH_ALEN);
227 list_add(&p->list, &rmc->bucket[idx]);
232 mesh_add_meshconf_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
234 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
236 u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie);
238 if (skb_tailroom(skb) < 2 + meshconf_len)
241 pos = skb_put(skb, 2 + meshconf_len);
242 *pos++ = WLAN_EID_MESH_CONFIG;
243 *pos++ = meshconf_len;
245 /* Active path selection protocol ID */
246 *pos++ = ifmsh->mesh_pp_id;
247 /* Active path selection metric ID */
248 *pos++ = ifmsh->mesh_pm_id;
249 /* Congestion control mode identifier */
250 *pos++ = ifmsh->mesh_cc_id;
251 /* Synchronization protocol identifier */
252 *pos++ = ifmsh->mesh_sp_id;
253 /* Authentication Protocol identifier */
254 *pos++ = ifmsh->mesh_auth_id;
255 /* Mesh Formation Info - number of neighbors */
256 neighbors = atomic_read(&ifmsh->estab_plinks);
257 /* Number of neighbor mesh STAs or 15 whichever is smaller */
258 neighbors = (neighbors > 15) ? 15 : neighbors;
259 *pos++ = neighbors << 1;
260 /* Mesh capability */
261 *pos = IEEE80211_MESHCONF_CAPAB_FORWARDING;
262 *pos |= ifmsh->accepting_plinks ?
263 IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
264 *pos++ |= ifmsh->adjusting_tbtt ?
265 IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING : 0x00;
272 mesh_add_meshid_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
274 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
277 if (skb_tailroom(skb) < 2 + ifmsh->mesh_id_len)
280 pos = skb_put(skb, 2 + ifmsh->mesh_id_len);
281 *pos++ = WLAN_EID_MESH_ID;
282 *pos++ = ifmsh->mesh_id_len;
283 if (ifmsh->mesh_id_len)
284 memcpy(pos, ifmsh->mesh_id, ifmsh->mesh_id_len);
290 mesh_add_vendor_ies(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
292 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
296 if (!ifmsh->ie || !ifmsh->ie_len)
299 /* fast-forward to vendor IEs */
300 offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0);
303 len = ifmsh->ie_len - offset;
304 data = ifmsh->ie + offset;
305 if (skb_tailroom(skb) < len)
307 memcpy(skb_put(skb, len), data, len);
314 mesh_add_rsn_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
316 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
320 if (!ifmsh->ie || !ifmsh->ie_len)
325 while (data < ifmsh->ie + ifmsh->ie_len) {
326 if (*data == WLAN_EID_RSN) {
334 if (skb_tailroom(skb) < len)
336 memcpy(skb_put(skb, len), data, len);
342 int mesh_add_ds_params_ie(struct sk_buff *skb,
343 struct ieee80211_sub_if_data *sdata)
345 struct ieee80211_local *local = sdata->local;
346 struct ieee80211_supported_band *sband;
347 struct ieee80211_chanctx_conf *chanctx_conf;
348 struct ieee80211_channel *chan;
351 if (skb_tailroom(skb) < 3)
355 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
356 if (WARN_ON(!chanctx_conf)) {
360 chan = chanctx_conf->def.chan;
363 sband = local->hw.wiphy->bands[chan->band];
364 if (sband->band == IEEE80211_BAND_2GHZ) {
365 pos = skb_put(skb, 2 + 1);
366 *pos++ = WLAN_EID_DS_PARAMS;
368 *pos++ = ieee80211_frequency_to_channel(chan->center_freq);
374 int mesh_add_ht_cap_ie(struct sk_buff *skb,
375 struct ieee80211_sub_if_data *sdata)
377 struct ieee80211_local *local = sdata->local;
378 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
379 struct ieee80211_supported_band *sband;
382 sband = local->hw.wiphy->bands[band];
383 if (!sband->ht_cap.ht_supported ||
384 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
387 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap))
390 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap));
391 ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, sband->ht_cap.cap);
396 int mesh_add_ht_oper_ie(struct sk_buff *skb,
397 struct ieee80211_sub_if_data *sdata)
399 struct ieee80211_local *local = sdata->local;
400 struct ieee80211_chanctx_conf *chanctx_conf;
401 struct ieee80211_channel *channel;
402 enum nl80211_channel_type channel_type =
403 cfg80211_get_chandef_type(&sdata->vif.bss_conf.chandef);
404 struct ieee80211_supported_band *sband;
405 struct ieee80211_sta_ht_cap *ht_cap;
409 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
410 if (WARN_ON(!chanctx_conf)) {
414 channel = chanctx_conf->def.chan;
417 sband = local->hw.wiphy->bands[channel->band];
418 ht_cap = &sband->ht_cap;
420 if (!ht_cap->ht_supported || channel_type == NL80211_CHAN_NO_HT)
423 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_operation))
426 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_operation));
427 ieee80211_ie_build_ht_oper(pos, ht_cap, &sdata->vif.bss_conf.chandef,
428 sdata->vif.bss_conf.ht_operation_mode);
432 static void ieee80211_mesh_path_timer(unsigned long data)
434 struct ieee80211_sub_if_data *sdata =
435 (struct ieee80211_sub_if_data *) data;
436 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
437 struct ieee80211_local *local = sdata->local;
439 if (local->quiescing) {
440 set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
444 ieee80211_queue_work(&local->hw, &sdata->work);
447 static void ieee80211_mesh_path_root_timer(unsigned long data)
449 struct ieee80211_sub_if_data *sdata =
450 (struct ieee80211_sub_if_data *) data;
451 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
452 struct ieee80211_local *local = sdata->local;
454 set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
456 if (local->quiescing) {
457 set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
461 ieee80211_queue_work(&local->hw, &sdata->work);
464 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh)
466 if (ifmsh->mshcfg.dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)
467 set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
469 clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
470 /* stop running timer */
471 del_timer_sync(&ifmsh->mesh_path_root_timer);
476 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
477 * @hdr: 802.11 frame header
478 * @fc: frame control field
479 * @meshda: destination address in the mesh
480 * @meshsa: source address address in the mesh. Same as TA, as frame is
481 * locally originated.
483 * Return the length of the 802.11 (does not include a mesh control header)
485 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
486 const u8 *meshda, const u8 *meshsa)
488 if (is_multicast_ether_addr(meshda)) {
489 *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
491 memcpy(hdr->addr1, meshda, ETH_ALEN);
492 memcpy(hdr->addr2, meshsa, ETH_ALEN);
493 memcpy(hdr->addr3, meshsa, ETH_ALEN);
496 *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
498 memset(hdr->addr1, 0, ETH_ALEN); /* RA is resolved later */
499 memcpy(hdr->addr2, meshsa, ETH_ALEN);
500 memcpy(hdr->addr3, meshda, ETH_ALEN);
501 memcpy(hdr->addr4, meshsa, ETH_ALEN);
507 * ieee80211_new_mesh_header - create a new mesh header
508 * @meshhdr: uninitialized mesh header
509 * @sdata: mesh interface to be used
510 * @addr4or5: 1st address in the ae header, which may correspond to address 4
511 * (if addr6 is NULL) or address 5 (if addr6 is present). It may
513 * @addr6: 2nd address in the ae header, which corresponds to addr6 of the
516 * Return the header length.
518 int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
519 struct ieee80211_sub_if_data *sdata, char *addr4or5,
523 BUG_ON(!addr4or5 && addr6);
524 memset(meshhdr, 0, sizeof(*meshhdr));
525 meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
526 put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum);
527 sdata->u.mesh.mesh_seqnum++;
528 if (addr4or5 && !addr6) {
529 meshhdr->flags |= MESH_FLAGS_AE_A4;
531 memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
532 } else if (addr4or5 && addr6) {
533 meshhdr->flags |= MESH_FLAGS_AE_A5_A6;
534 aelen += 2 * ETH_ALEN;
535 memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
536 memcpy(meshhdr->eaddr2, addr6, ETH_ALEN);
541 static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
542 struct ieee80211_if_mesh *ifmsh)
546 ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
547 mesh_path_expire(sdata);
549 changed = mesh_accept_plinks_update(sdata);
550 ieee80211_bss_info_change_notify(sdata, changed);
552 mod_timer(&ifmsh->housekeeping_timer,
553 round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL));
556 static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
558 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
561 mesh_path_tx_root_frame(sdata);
563 if (ifmsh->mshcfg.dot11MeshHWMPRootMode == IEEE80211_PROACTIVE_RANN)
564 interval = ifmsh->mshcfg.dot11MeshHWMPRannInterval;
566 interval = ifmsh->mshcfg.dot11MeshHWMProotInterval;
568 mod_timer(&ifmsh->mesh_path_root_timer,
569 round_jiffies(TU_TO_EXP_TIME(interval)));
573 void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
575 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
577 /* use atomic bitops in case all timers fire at the same time */
579 if (del_timer_sync(&ifmsh->housekeeping_timer))
580 set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
581 if (del_timer_sync(&ifmsh->mesh_path_timer))
582 set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
583 if (del_timer_sync(&ifmsh->mesh_path_root_timer))
584 set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
587 void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata)
589 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
591 if (test_and_clear_bit(TMR_RUNNING_HK, &ifmsh->timers_running))
592 add_timer(&ifmsh->housekeeping_timer);
593 if (test_and_clear_bit(TMR_RUNNING_MP, &ifmsh->timers_running))
594 add_timer(&ifmsh->mesh_path_timer);
595 if (test_and_clear_bit(TMR_RUNNING_MPR, &ifmsh->timers_running))
596 add_timer(&ifmsh->mesh_path_root_timer);
597 ieee80211_mesh_root_setup(ifmsh);
601 void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
603 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
604 struct ieee80211_local *local = sdata->local;
605 u32 changed = BSS_CHANGED_BEACON |
606 BSS_CHANGED_BEACON_ENABLED |
608 BSS_CHANGED_BASIC_RATES |
609 BSS_CHANGED_BEACON_INT;
610 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
612 local->fif_other_bss++;
613 /* mesh ifaces must set allmulti to forward mcast traffic */
614 atomic_inc(&local->iff_allmultis);
615 ieee80211_configure_filter(local);
617 ifmsh->mesh_cc_id = 0; /* Disabled */
618 ifmsh->mesh_auth_id = 0; /* Disabled */
619 /* register sync ops from extensible synchronization framework */
620 ifmsh->sync_ops = ieee80211_mesh_sync_ops_get(ifmsh->mesh_sp_id);
621 ifmsh->adjusting_tbtt = false;
622 ifmsh->sync_offset_clockdrift_max = 0;
623 set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
624 ieee80211_mesh_root_setup(ifmsh);
625 ieee80211_queue_work(&local->hw, &sdata->work);
626 sdata->vif.bss_conf.ht_operation_mode =
627 ifmsh->mshcfg.ht_opmode;
628 sdata->vif.bss_conf.beacon_int = MESH_DEFAULT_BEACON_INTERVAL;
629 sdata->vif.bss_conf.basic_rates =
630 ieee80211_mandatory_rates(local, band);
632 if (band == IEEE80211_BAND_5GHZ) {
633 sdata->vif.bss_conf.use_short_slot = true;
634 changed |= BSS_CHANGED_ERP_SLOT;
637 ieee80211_bss_info_change_notify(sdata, changed);
639 netif_carrier_on(sdata->dev);
642 void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
644 struct ieee80211_local *local = sdata->local;
645 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
647 netif_carrier_off(sdata->dev);
649 /* stop the beacon */
650 ifmsh->mesh_id_len = 0;
651 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
653 /* flush STAs and mpaths on this iface */
654 sta_info_flush(sdata);
655 mesh_path_flush_by_iface(sdata);
657 del_timer_sync(&sdata->u.mesh.housekeeping_timer);
658 del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
659 del_timer_sync(&sdata->u.mesh.mesh_path_timer);
661 * If the timer fired while we waited for it, it will have
662 * requeued the work. Now the work will be running again
663 * but will not rearm the timer again because it checks
664 * whether the interface is running, which, at this point,
667 cancel_work_sync(&sdata->work);
669 local->fif_other_bss--;
670 atomic_dec(&local->iff_allmultis);
671 ieee80211_configure_filter(local);
673 sdata->u.mesh.timers_running = 0;
676 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
678 struct ieee80211_mgmt *mgmt,
680 struct ieee80211_rx_status *rx_status)
682 struct ieee80211_local *local = sdata->local;
683 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
684 struct ieee802_11_elems elems;
685 struct ieee80211_channel *channel;
688 enum ieee80211_band band = rx_status->band;
690 /* ignore ProbeResp to foreign address */
691 if (stype == IEEE80211_STYPE_PROBE_RESP &&
692 !ether_addr_equal(mgmt->da, sdata->vif.addr))
695 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
699 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
702 /* ignore non-mesh or secure / unsecure mismatch */
703 if ((!elems.mesh_id || !elems.mesh_config) ||
704 (elems.rsn && sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) ||
705 (!elems.rsn && sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE))
708 if (elems.ds_params && elems.ds_params_len == 1)
709 freq = ieee80211_channel_to_frequency(elems.ds_params[0], band);
711 freq = rx_status->freq;
713 channel = ieee80211_get_channel(local->hw.wiphy, freq);
715 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
718 if (mesh_matches_local(sdata, &elems))
719 mesh_neighbour_update(sdata, mgmt->sa, &elems);
722 ifmsh->sync_ops->rx_bcn_presp(sdata,
723 stype, mgmt, &elems, rx_status);
726 static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
727 struct ieee80211_mgmt *mgmt,
729 struct ieee80211_rx_status *rx_status)
731 switch (mgmt->u.action.category) {
732 case WLAN_CATEGORY_SELF_PROTECTED:
733 switch (mgmt->u.action.u.self_prot.action_code) {
734 case WLAN_SP_MESH_PEERING_OPEN:
735 case WLAN_SP_MESH_PEERING_CLOSE:
736 case WLAN_SP_MESH_PEERING_CONFIRM:
737 mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
741 case WLAN_CATEGORY_MESH_ACTION:
742 if (mesh_action_is_path_sel(mgmt))
743 mesh_rx_path_sel_frame(sdata, mgmt, len);
748 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
751 struct ieee80211_rx_status *rx_status;
752 struct ieee80211_mgmt *mgmt;
755 rx_status = IEEE80211_SKB_RXCB(skb);
756 mgmt = (struct ieee80211_mgmt *) skb->data;
757 stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
760 case IEEE80211_STYPE_PROBE_RESP:
761 case IEEE80211_STYPE_BEACON:
762 ieee80211_mesh_rx_bcn_presp(sdata, stype, mgmt, skb->len,
765 case IEEE80211_STYPE_ACTION:
766 ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status);
771 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
773 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
775 if (ifmsh->preq_queue_len &&
777 ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval)))
778 mesh_path_start_discovery(sdata);
780 if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags))
781 mesh_mpath_table_grow();
783 if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE, &ifmsh->wrkq_flags))
784 mesh_mpp_table_grow();
786 if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags))
787 ieee80211_mesh_housekeeping(sdata, ifmsh);
789 if (test_and_clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags))
790 ieee80211_mesh_rootpath(sdata);
792 if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST, &ifmsh->wrkq_flags))
793 mesh_sync_adjust_tbtt(sdata);
796 void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
798 struct ieee80211_sub_if_data *sdata;
801 list_for_each_entry_rcu(sdata, &local->interfaces, list)
802 if (ieee80211_vif_is_mesh(&sdata->vif))
803 ieee80211_queue_work(&local->hw, &sdata->work);
807 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
809 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
811 setup_timer(&ifmsh->housekeeping_timer,
812 ieee80211_mesh_housekeeping_timer,
813 (unsigned long) sdata);
815 ifmsh->accepting_plinks = true;
818 ifmsh->num_gates = 0;
819 atomic_set(&ifmsh->mpaths, 0);
820 mesh_rmc_init(sdata);
821 ifmsh->last_preq = jiffies;
822 ifmsh->next_perr = jiffies;
823 /* Allocate all mesh structures when creating the first mesh interface. */
826 setup_timer(&ifmsh->mesh_path_timer,
827 ieee80211_mesh_path_timer,
828 (unsigned long) sdata);
829 setup_timer(&ifmsh->mesh_path_root_timer,
830 ieee80211_mesh_path_root_timer,
831 (unsigned long) sdata);
832 INIT_LIST_HEAD(&ifmsh->preq_queue.list);
833 spin_lock_init(&ifmsh->mesh_preq_queue_lock);
834 spin_lock_init(&ifmsh->sync_offset_lock);