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;
79 enum nl80211_channel_type sta_channel_type = NL80211_CHAN_NO_HT;
82 * As support for each feature is added, check for matching
83 * - On mesh config capabilities
84 * - Power Save Support En
85 * - Sync support enabled
86 * - Sync support active
87 * - Sync support required from peer
89 * - Power management control on fc
91 if (!(ifmsh->mesh_id_len == ie->mesh_id_len &&
92 memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
93 (ifmsh->mesh_pp_id == ie->mesh_config->meshconf_psel) &&
94 (ifmsh->mesh_pm_id == ie->mesh_config->meshconf_pmetric) &&
95 (ifmsh->mesh_cc_id == ie->mesh_config->meshconf_congest) &&
96 (ifmsh->mesh_sp_id == ie->mesh_config->meshconf_synch) &&
97 (ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth)))
100 ieee80211_sta_get_rates(local, ie, local->oper_channel->band,
103 if (sdata->vif.bss_conf.basic_rates != basic_rates)
106 if (ie->ht_operation)
108 ieee80211_ht_oper_to_channel_type(ie->ht_operation);
110 /* Disallow HT40+/- mismatch */
111 if (ie->ht_operation &&
112 (local->_oper_channel_type == NL80211_CHAN_HT40MINUS ||
113 local->_oper_channel_type == NL80211_CHAN_HT40PLUS) &&
114 (sta_channel_type == NL80211_CHAN_HT40MINUS ||
115 sta_channel_type == NL80211_CHAN_HT40PLUS) &&
116 local->_oper_channel_type != sta_channel_type)
125 * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
127 * @ie: information elements of a management frame from the mesh peer
129 bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
131 return (ie->mesh_config->meshconf_cap &
132 MESHCONF_CAPAB_ACCEPT_PLINKS) != 0;
136 * mesh_accept_plinks_update - update accepting_plink in local mesh beacons
138 * @sdata: mesh interface in which mesh beacons are going to be updated
140 void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
144 /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
145 * the mesh interface might be able to establish plinks with peers that
146 * are already on the table but are not on PLINK_ESTAB state. However,
147 * in general the mesh interface is not accepting peer link requests
148 * from new peers, and that must be reflected in the beacon
150 free_plinks = mesh_plink_availables(sdata);
152 if (free_plinks != sdata->u.mesh.accepting_plinks)
153 ieee80211_mesh_housekeeping_timer((unsigned long) sdata);
156 int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
160 sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
161 if (!sdata->u.mesh.rmc)
163 sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1;
164 for (i = 0; i < RMC_BUCKETS; i++)
165 INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i].list);
169 void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
171 struct mesh_rmc *rmc = sdata->u.mesh.rmc;
172 struct rmc_entry *p, *n;
175 if (!sdata->u.mesh.rmc)
178 for (i = 0; i < RMC_BUCKETS; i++)
179 list_for_each_entry_safe(p, n, &rmc->bucket[i].list, list) {
181 kmem_cache_free(rm_cache, p);
185 sdata->u.mesh.rmc = NULL;
189 * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
191 * @sa: source address
192 * @mesh_hdr: mesh_header
194 * Returns: 0 if the frame is not in the cache, nonzero otherwise.
196 * Checks using the source address and the mesh sequence number if we have
197 * received this frame lately. If the frame is not in the cache, it is added to
200 int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
201 struct ieee80211_sub_if_data *sdata)
203 struct mesh_rmc *rmc = sdata->u.mesh.rmc;
207 struct rmc_entry *p, *n;
209 /* Don't care about endianness since only match matters */
210 memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum));
211 idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask;
212 list_for_each_entry_safe(p, n, &rmc->bucket[idx].list, list) {
214 if (time_after(jiffies, p->exp_time) ||
215 (entries == RMC_QUEUE_MAX_LEN)) {
217 kmem_cache_free(rm_cache, p);
219 } else if ((seqnum == p->seqnum) &&
220 (ether_addr_equal(sa, p->sa)))
224 p = kmem_cache_alloc(rm_cache, GFP_ATOMIC);
229 p->exp_time = jiffies + RMC_TIMEOUT;
230 memcpy(p->sa, sa, ETH_ALEN);
231 list_add(&p->list, &rmc->bucket[idx].list);
236 mesh_add_meshconf_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
238 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
240 u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie);
242 if (skb_tailroom(skb) < 2 + meshconf_len)
245 pos = skb_put(skb, 2 + meshconf_len);
246 *pos++ = WLAN_EID_MESH_CONFIG;
247 *pos++ = meshconf_len;
249 /* Active path selection protocol ID */
250 *pos++ = ifmsh->mesh_pp_id;
251 /* Active path selection metric ID */
252 *pos++ = ifmsh->mesh_pm_id;
253 /* Congestion control mode identifier */
254 *pos++ = ifmsh->mesh_cc_id;
255 /* Synchronization protocol identifier */
256 *pos++ = ifmsh->mesh_sp_id;
257 /* Authentication Protocol identifier */
258 *pos++ = ifmsh->mesh_auth_id;
259 /* Mesh Formation Info - number of neighbors */
260 neighbors = atomic_read(&ifmsh->mshstats.estab_plinks);
261 /* Number of neighbor mesh STAs or 15 whichever is smaller */
262 neighbors = (neighbors > 15) ? 15 : neighbors;
263 *pos++ = neighbors << 1;
264 /* Mesh capability */
265 ifmsh->accepting_plinks = mesh_plink_availables(sdata);
266 *pos = MESHCONF_CAPAB_FORWARDING;
267 *pos |= ifmsh->accepting_plinks ?
268 MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
269 *pos++ |= ifmsh->adjusting_tbtt ?
270 MESHCONF_CAPAB_TBTT_ADJUSTING : 0x00;
277 mesh_add_meshid_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
279 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
282 if (skb_tailroom(skb) < 2 + ifmsh->mesh_id_len)
285 pos = skb_put(skb, 2 + ifmsh->mesh_id_len);
286 *pos++ = WLAN_EID_MESH_ID;
287 *pos++ = ifmsh->mesh_id_len;
288 if (ifmsh->mesh_id_len)
289 memcpy(pos, ifmsh->mesh_id, ifmsh->mesh_id_len);
295 mesh_add_vendor_ies(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
297 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
301 if (!ifmsh->ie || !ifmsh->ie_len)
304 /* fast-forward to vendor IEs */
305 offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0);
308 len = ifmsh->ie_len - offset;
309 data = ifmsh->ie + offset;
310 if (skb_tailroom(skb) < len)
312 memcpy(skb_put(skb, len), data, len);
319 mesh_add_rsn_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
321 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
325 if (!ifmsh->ie || !ifmsh->ie_len)
330 while (data < ifmsh->ie + ifmsh->ie_len) {
331 if (*data == WLAN_EID_RSN) {
339 if (skb_tailroom(skb) < len)
341 memcpy(skb_put(skb, len), data, len);
347 int mesh_add_ds_params_ie(struct sk_buff *skb,
348 struct ieee80211_sub_if_data *sdata)
350 struct ieee80211_local *local = sdata->local;
351 struct ieee80211_supported_band *sband;
352 struct ieee80211_channel *chan = local->oper_channel;
355 if (skb_tailroom(skb) < 3)
358 sband = local->hw.wiphy->bands[chan->band];
359 if (sband->band == IEEE80211_BAND_2GHZ) {
360 pos = skb_put(skb, 2 + 1);
361 *pos++ = WLAN_EID_DS_PARAMS;
363 *pos++ = ieee80211_frequency_to_channel(chan->center_freq);
369 int mesh_add_ht_cap_ie(struct sk_buff *skb,
370 struct ieee80211_sub_if_data *sdata)
372 struct ieee80211_local *local = sdata->local;
373 struct ieee80211_supported_band *sband;
376 sband = local->hw.wiphy->bands[local->oper_channel->band];
377 if (!sband->ht_cap.ht_supported ||
378 local->_oper_channel_type == NL80211_CHAN_NO_HT)
381 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap))
384 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap));
385 ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, sband->ht_cap.cap);
390 int mesh_add_ht_oper_ie(struct sk_buff *skb,
391 struct ieee80211_sub_if_data *sdata)
393 struct ieee80211_local *local = sdata->local;
394 struct ieee80211_channel *channel = local->oper_channel;
395 enum nl80211_channel_type channel_type = local->_oper_channel_type;
396 struct ieee80211_supported_band *sband =
397 local->hw.wiphy->bands[channel->band];
398 struct ieee80211_sta_ht_cap *ht_cap = &sband->ht_cap;
401 if (!ht_cap->ht_supported || channel_type == NL80211_CHAN_NO_HT)
404 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_operation))
407 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_operation));
408 ieee80211_ie_build_ht_oper(pos, ht_cap, channel, channel_type,
409 sdata->vif.bss_conf.ht_operation_mode);
413 static void ieee80211_mesh_path_timer(unsigned long data)
415 struct ieee80211_sub_if_data *sdata =
416 (struct ieee80211_sub_if_data *) data;
417 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
418 struct ieee80211_local *local = sdata->local;
420 if (local->quiescing) {
421 set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
425 ieee80211_queue_work(&local->hw, &sdata->work);
428 static void ieee80211_mesh_path_root_timer(unsigned long data)
430 struct ieee80211_sub_if_data *sdata =
431 (struct ieee80211_sub_if_data *) data;
432 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
433 struct ieee80211_local *local = sdata->local;
435 set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
437 if (local->quiescing) {
438 set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
442 ieee80211_queue_work(&local->hw, &sdata->work);
445 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh)
447 if (ifmsh->mshcfg.dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)
448 set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
450 clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
451 /* stop running timer */
452 del_timer_sync(&ifmsh->mesh_path_root_timer);
457 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
458 * @hdr: 802.11 frame header
459 * @fc: frame control field
460 * @meshda: destination address in the mesh
461 * @meshsa: source address address in the mesh. Same as TA, as frame is
462 * locally originated.
464 * Return the length of the 802.11 (does not include a mesh control header)
466 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
467 const u8 *meshda, const u8 *meshsa)
469 if (is_multicast_ether_addr(meshda)) {
470 *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
472 memcpy(hdr->addr1, meshda, ETH_ALEN);
473 memcpy(hdr->addr2, meshsa, ETH_ALEN);
474 memcpy(hdr->addr3, meshsa, ETH_ALEN);
477 *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
479 memset(hdr->addr1, 0, ETH_ALEN); /* RA is resolved later */
480 memcpy(hdr->addr2, meshsa, ETH_ALEN);
481 memcpy(hdr->addr3, meshda, ETH_ALEN);
482 memcpy(hdr->addr4, meshsa, ETH_ALEN);
488 * ieee80211_new_mesh_header - create a new mesh header
489 * @meshhdr: uninitialized mesh header
490 * @sdata: mesh interface to be used
491 * @addr4or5: 1st address in the ae header, which may correspond to address 4
492 * (if addr6 is NULL) or address 5 (if addr6 is present). It may
494 * @addr6: 2nd address in the ae header, which corresponds to addr6 of the
497 * Return the header length.
499 int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
500 struct ieee80211_sub_if_data *sdata, char *addr4or5,
504 BUG_ON(!addr4or5 && addr6);
505 memset(meshhdr, 0, sizeof(*meshhdr));
506 meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
507 put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum);
508 sdata->u.mesh.mesh_seqnum++;
509 if (addr4or5 && !addr6) {
510 meshhdr->flags |= MESH_FLAGS_AE_A4;
512 memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
513 } else if (addr4or5 && addr6) {
514 meshhdr->flags |= MESH_FLAGS_AE_A5_A6;
515 aelen += 2 * ETH_ALEN;
516 memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
517 memcpy(meshhdr->eaddr2, addr6, ETH_ALEN);
522 static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
523 struct ieee80211_if_mesh *ifmsh)
527 ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
528 mesh_path_expire(sdata);
530 free_plinks = mesh_plink_availables(sdata);
531 if (free_plinks != sdata->u.mesh.accepting_plinks)
532 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
534 mod_timer(&ifmsh->housekeeping_timer,
535 round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL));
538 static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
540 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
543 mesh_path_tx_root_frame(sdata);
545 if (ifmsh->mshcfg.dot11MeshHWMPRootMode == IEEE80211_PROACTIVE_RANN)
546 interval = ifmsh->mshcfg.dot11MeshHWMPRannInterval;
548 interval = ifmsh->mshcfg.dot11MeshHWMProotInterval;
550 mod_timer(&ifmsh->mesh_path_root_timer,
551 round_jiffies(TU_TO_EXP_TIME(interval)));
555 void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
557 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
559 /* use atomic bitops in case all timers fire at the same time */
561 if (del_timer_sync(&ifmsh->housekeeping_timer))
562 set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
563 if (del_timer_sync(&ifmsh->mesh_path_timer))
564 set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
565 if (del_timer_sync(&ifmsh->mesh_path_root_timer))
566 set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
569 void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata)
571 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
573 if (test_and_clear_bit(TMR_RUNNING_HK, &ifmsh->timers_running))
574 add_timer(&ifmsh->housekeeping_timer);
575 if (test_and_clear_bit(TMR_RUNNING_MP, &ifmsh->timers_running))
576 add_timer(&ifmsh->mesh_path_timer);
577 if (test_and_clear_bit(TMR_RUNNING_MPR, &ifmsh->timers_running))
578 add_timer(&ifmsh->mesh_path_root_timer);
579 ieee80211_mesh_root_setup(ifmsh);
583 void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
585 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
586 struct ieee80211_local *local = sdata->local;
588 local->fif_other_bss++;
589 /* mesh ifaces must set allmulti to forward mcast traffic */
590 atomic_inc(&local->iff_allmultis);
591 ieee80211_configure_filter(local);
593 ifmsh->mesh_cc_id = 0; /* Disabled */
594 ifmsh->mesh_auth_id = 0; /* Disabled */
595 /* register sync ops from extensible synchronization framework */
596 ifmsh->sync_ops = ieee80211_mesh_sync_ops_get(ifmsh->mesh_sp_id);
597 ifmsh->adjusting_tbtt = false;
598 ifmsh->sync_offset_clockdrift_max = 0;
599 set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
600 ieee80211_mesh_root_setup(ifmsh);
601 ieee80211_queue_work(&local->hw, &sdata->work);
602 sdata->vif.bss_conf.ht_operation_mode =
603 ifmsh->mshcfg.ht_opmode;
604 sdata->vif.bss_conf.beacon_int = MESH_DEFAULT_BEACON_INTERVAL;
605 sdata->vif.bss_conf.basic_rates =
606 ieee80211_mandatory_rates(sdata->local,
607 sdata->local->oper_channel->band);
608 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON |
609 BSS_CHANGED_BEACON_ENABLED |
611 BSS_CHANGED_BASIC_RATES |
612 BSS_CHANGED_BEACON_INT);
614 netif_carrier_on(sdata->dev);
617 void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
619 struct ieee80211_local *local = sdata->local;
620 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
622 netif_carrier_off(sdata->dev);
624 /* stop the beacon */
625 ifmsh->mesh_id_len = 0;
626 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
628 /* flush STAs and mpaths on this iface */
629 sta_info_flush(sdata->local, sdata);
630 mesh_path_flush_by_iface(sdata);
632 del_timer_sync(&sdata->u.mesh.housekeeping_timer);
633 del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
635 * If the timer fired while we waited for it, it will have
636 * requeued the work. Now the work will be running again
637 * but will not rearm the timer again because it checks
638 * whether the interface is running, which, at this point,
641 cancel_work_sync(&sdata->work);
643 local->fif_other_bss--;
644 atomic_dec(&local->iff_allmultis);
645 ieee80211_configure_filter(local);
648 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
650 struct ieee80211_mgmt *mgmt,
652 struct ieee80211_rx_status *rx_status)
654 struct ieee80211_local *local = sdata->local;
655 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
656 struct ieee802_11_elems elems;
657 struct ieee80211_channel *channel;
660 enum ieee80211_band band = rx_status->band;
662 /* ignore ProbeResp to foreign address */
663 if (stype == IEEE80211_STYPE_PROBE_RESP &&
664 !ether_addr_equal(mgmt->da, sdata->vif.addr))
667 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
671 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
674 /* ignore beacons from secure mesh peers if our security is off */
675 if (elems.rsn_len && sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE)
678 if (elems.ds_params && elems.ds_params_len == 1)
679 freq = ieee80211_channel_to_frequency(elems.ds_params[0], band);
681 freq = rx_status->freq;
683 channel = ieee80211_get_channel(local->hw.wiphy, freq);
685 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
688 if (elems.mesh_id && elems.mesh_config &&
689 mesh_matches_local(sdata, &elems))
690 mesh_neighbour_update(sdata, mgmt->sa, &elems);
693 ifmsh->sync_ops->rx_bcn_presp(sdata,
694 stype, mgmt, &elems, rx_status);
697 static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
698 struct ieee80211_mgmt *mgmt,
700 struct ieee80211_rx_status *rx_status)
702 switch (mgmt->u.action.category) {
703 case WLAN_CATEGORY_SELF_PROTECTED:
704 switch (mgmt->u.action.u.self_prot.action_code) {
705 case WLAN_SP_MESH_PEERING_OPEN:
706 case WLAN_SP_MESH_PEERING_CLOSE:
707 case WLAN_SP_MESH_PEERING_CONFIRM:
708 mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
712 case WLAN_CATEGORY_MESH_ACTION:
713 if (mesh_action_is_path_sel(mgmt))
714 mesh_rx_path_sel_frame(sdata, mgmt, len);
719 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
722 struct ieee80211_rx_status *rx_status;
723 struct ieee80211_mgmt *mgmt;
726 rx_status = IEEE80211_SKB_RXCB(skb);
727 mgmt = (struct ieee80211_mgmt *) skb->data;
728 stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
731 case IEEE80211_STYPE_PROBE_RESP:
732 case IEEE80211_STYPE_BEACON:
733 ieee80211_mesh_rx_bcn_presp(sdata, stype, mgmt, skb->len,
736 case IEEE80211_STYPE_ACTION:
737 ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status);
742 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
744 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
746 if (ifmsh->preq_queue_len &&
748 ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval)))
749 mesh_path_start_discovery(sdata);
751 if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags))
752 mesh_mpath_table_grow();
754 if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE, &ifmsh->wrkq_flags))
755 mesh_mpp_table_grow();
757 if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags))
758 ieee80211_mesh_housekeeping(sdata, ifmsh);
760 if (test_and_clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags))
761 ieee80211_mesh_rootpath(sdata);
763 if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST, &ifmsh->wrkq_flags))
764 mesh_sync_adjust_tbtt(sdata);
767 void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
769 struct ieee80211_sub_if_data *sdata;
772 list_for_each_entry_rcu(sdata, &local->interfaces, list)
773 if (ieee80211_vif_is_mesh(&sdata->vif))
774 ieee80211_queue_work(&local->hw, &sdata->work);
778 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
780 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
782 setup_timer(&ifmsh->housekeeping_timer,
783 ieee80211_mesh_housekeeping_timer,
784 (unsigned long) sdata);
786 ifmsh->accepting_plinks = true;
789 ifmsh->num_gates = 0;
790 atomic_set(&ifmsh->mpaths, 0);
791 mesh_rmc_init(sdata);
792 ifmsh->last_preq = jiffies;
793 ifmsh->next_perr = jiffies;
794 /* Allocate all mesh structures when creating the first mesh interface. */
797 setup_timer(&ifmsh->mesh_path_timer,
798 ieee80211_mesh_path_timer,
799 (unsigned long) sdata);
800 setup_timer(&ifmsh->mesh_path_root_timer,
801 ieee80211_mesh_path_root_timer,
802 (unsigned long) sdata);
803 INIT_LIST_HEAD(&ifmsh->preq_queue.list);
804 spin_lock_init(&ifmsh->mesh_preq_queue_lock);
805 spin_lock_init(&ifmsh->sync_offset_lock);