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 MESHCONF_CAPAB_ACCEPT_PLINKS 0x01
17 #define MESHCONF_CAPAB_FORWARDING 0x08
19 #define TMR_RUNNING_HK 0
20 #define TMR_RUNNING_MP 1
21 #define TMR_RUNNING_MPR 2
24 static struct kmem_cache *rm_cache;
26 #ifdef CONFIG_MAC80211_MESH
27 bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
29 return (mgmt->u.action.u.mesh_action.action_code ==
30 WLAN_MESH_ACTION_HWMP_PATH_SELECTION);
33 bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
37 void ieee80211s_init(void)
41 rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry),
45 void ieee80211s_stop(void)
47 mesh_pathtbl_unregister();
48 kmem_cache_destroy(rm_cache);
51 static void ieee80211_mesh_housekeeping_timer(unsigned long data)
53 struct ieee80211_sub_if_data *sdata = (void *) data;
54 struct ieee80211_local *local = sdata->local;
55 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
57 set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
59 if (local->quiescing) {
60 set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
64 ieee80211_queue_work(&local->hw, &sdata->work);
68 * mesh_matches_local - check if the config of a mesh point matches ours
70 * @ie: information elements of a management frame from the mesh peer
71 * @sdata: local mesh subif
73 * This function checks if the mesh configuration of a mesh point matches the
74 * local mesh configuration, i.e. if both nodes belong to the same mesh network.
76 bool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_data *sdata)
78 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
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))
103 * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
105 * @ie: information elements of a management frame from the mesh peer
107 bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
109 return (ie->mesh_config->meshconf_cap &
110 MESHCONF_CAPAB_ACCEPT_PLINKS) != 0;
114 * mesh_accept_plinks_update: update accepting_plink in local mesh beacons
116 * @sdata: mesh interface in which mesh beacons are going to be updated
118 void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
122 /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
123 * the mesh interface might be able to establish plinks with peers that
124 * are already on the table but are not on PLINK_ESTAB state. However,
125 * in general the mesh interface is not accepting peer link requests
126 * from new peers, and that must be reflected in the beacon
128 free_plinks = mesh_plink_availables(sdata);
130 if (free_plinks != sdata->u.mesh.accepting_plinks)
131 ieee80211_mesh_housekeeping_timer((unsigned long) sdata);
134 int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
138 sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
139 if (!sdata->u.mesh.rmc)
141 sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1;
142 for (i = 0; i < RMC_BUCKETS; i++)
143 INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i].list);
147 void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
149 struct mesh_rmc *rmc = sdata->u.mesh.rmc;
150 struct rmc_entry *p, *n;
153 if (!sdata->u.mesh.rmc)
156 for (i = 0; i < RMC_BUCKETS; i++)
157 list_for_each_entry_safe(p, n, &rmc->bucket[i].list, list) {
159 kmem_cache_free(rm_cache, p);
163 sdata->u.mesh.rmc = NULL;
167 * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
169 * @sa: source address
170 * @mesh_hdr: mesh_header
172 * Returns: 0 if the frame is not in the cache, nonzero otherwise.
174 * Checks using the source address and the mesh sequence number if we have
175 * received this frame lately. If the frame is not in the cache, it is added to
178 int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
179 struct ieee80211_sub_if_data *sdata)
181 struct mesh_rmc *rmc = sdata->u.mesh.rmc;
185 struct rmc_entry *p, *n;
187 /* Don't care about endianness since only match matters */
188 memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum));
189 idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask;
190 list_for_each_entry_safe(p, n, &rmc->bucket[idx].list, list) {
192 if (time_after(jiffies, p->exp_time) ||
193 (entries == RMC_QUEUE_MAX_LEN)) {
195 kmem_cache_free(rm_cache, p);
197 } else if ((seqnum == p->seqnum) &&
198 (memcmp(sa, p->sa, ETH_ALEN) == 0))
202 p = kmem_cache_alloc(rm_cache, GFP_ATOMIC);
207 p->exp_time = jiffies + RMC_TIMEOUT;
208 memcpy(p->sa, sa, ETH_ALEN);
209 list_add(&p->list, &rmc->bucket[idx].list);
214 mesh_add_meshconf_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
216 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
218 u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie);
220 if (skb_tailroom(skb) < 2 + meshconf_len)
223 pos = skb_put(skb, 2 + meshconf_len);
224 *pos++ = WLAN_EID_MESH_CONFIG;
225 *pos++ = meshconf_len;
227 /* Active path selection protocol ID */
228 *pos++ = ifmsh->mesh_pp_id;
229 /* Active path selection metric ID */
230 *pos++ = ifmsh->mesh_pm_id;
231 /* Congestion control mode identifier */
232 *pos++ = ifmsh->mesh_cc_id;
233 /* Synchronization protocol identifier */
234 *pos++ = ifmsh->mesh_sp_id;
235 /* Authentication Protocol identifier */
236 *pos++ = ifmsh->mesh_auth_id;
237 /* Mesh Formation Info - number of neighbors */
238 neighbors = atomic_read(&ifmsh->mshstats.estab_plinks);
239 /* Number of neighbor mesh STAs or 15 whichever is smaller */
240 neighbors = (neighbors > 15) ? 15 : neighbors;
241 *pos++ = neighbors << 1;
242 /* Mesh capability */
243 ifmsh->accepting_plinks = mesh_plink_availables(sdata);
244 *pos = MESHCONF_CAPAB_FORWARDING;
245 *pos++ |= ifmsh->accepting_plinks ?
246 MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
253 mesh_add_meshid_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
255 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
258 if (skb_tailroom(skb) < 2 + ifmsh->mesh_id_len)
261 pos = skb_put(skb, 2 + ifmsh->mesh_id_len);
262 *pos++ = WLAN_EID_MESH_ID;
263 *pos++ = ifmsh->mesh_id_len;
264 if (ifmsh->mesh_id_len)
265 memcpy(pos, ifmsh->mesh_id, ifmsh->mesh_id_len);
271 mesh_add_vendor_ies(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
273 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
277 if (!ifmsh->ie || !ifmsh->ie_len)
280 /* fast-forward to vendor IEs */
281 offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0);
284 len = ifmsh->ie_len - offset;
285 data = ifmsh->ie + offset;
286 if (skb_tailroom(skb) < len)
288 memcpy(skb_put(skb, len), data, len);
295 mesh_add_rsn_ie(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)
306 while (data < ifmsh->ie + ifmsh->ie_len) {
307 if (*data == WLAN_EID_RSN) {
315 if (skb_tailroom(skb) < len)
317 memcpy(skb_put(skb, len), data, len);
324 mesh_add_srates_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
326 struct ieee80211_local *local = sdata->local;
327 struct ieee80211_supported_band *sband;
331 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
332 rates = sband->n_bitrates;
336 if (skb_tailroom(skb) < rates + 2)
339 pos = skb_put(skb, rates + 2);
340 *pos++ = WLAN_EID_SUPP_RATES;
342 for (i = 0; i < rates; i++) {
343 rate = sband->bitrates[i].bitrate;
344 *pos++ = (u8) (rate / 5);
351 mesh_add_ext_srates_ie(struct sk_buff *skb,
352 struct ieee80211_sub_if_data *sdata)
354 struct ieee80211_local *local = sdata->local;
355 struct ieee80211_supported_band *sband;
359 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
360 exrates = sband->n_bitrates;
366 if (skb_tailroom(skb) < exrates + 2)
370 pos = skb_put(skb, exrates + 2);
371 *pos++ = WLAN_EID_EXT_SUPP_RATES;
373 for (i = 8; i < sband->n_bitrates; i++) {
374 rate = sband->bitrates[i].bitrate;
375 *pos++ = (u8) (rate / 5);
381 int mesh_add_ds_params_ie(struct sk_buff *skb,
382 struct ieee80211_sub_if_data *sdata)
384 struct ieee80211_local *local = sdata->local;
385 struct ieee80211_supported_band *sband;
388 if (skb_tailroom(skb) < 3)
391 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
392 if (sband->band == IEEE80211_BAND_2GHZ) {
393 pos = skb_put(skb, 2 + 1);
394 *pos++ = WLAN_EID_DS_PARAMS;
396 *pos++ = ieee80211_frequency_to_channel(local->hw.conf.channel->center_freq);
402 static void ieee80211_mesh_path_timer(unsigned long data)
404 struct ieee80211_sub_if_data *sdata =
405 (struct ieee80211_sub_if_data *) data;
406 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
407 struct ieee80211_local *local = sdata->local;
409 if (local->quiescing) {
410 set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
414 ieee80211_queue_work(&local->hw, &sdata->work);
417 static void ieee80211_mesh_path_root_timer(unsigned long data)
419 struct ieee80211_sub_if_data *sdata =
420 (struct ieee80211_sub_if_data *) data;
421 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
422 struct ieee80211_local *local = sdata->local;
424 set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
426 if (local->quiescing) {
427 set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
431 ieee80211_queue_work(&local->hw, &sdata->work);
434 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh)
436 if (ifmsh->mshcfg.dot11MeshHWMPRootMode)
437 set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
439 clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
440 /* stop running timer */
441 del_timer_sync(&ifmsh->mesh_path_root_timer);
446 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
447 * @hdr: 802.11 frame header
448 * @fc: frame control field
449 * @meshda: destination address in the mesh
450 * @meshsa: source address address in the mesh. Same as TA, as frame is
451 * locally originated.
453 * Return the length of the 802.11 (does not include a mesh control header)
455 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
456 const u8 *meshda, const u8 *meshsa)
458 if (is_multicast_ether_addr(meshda)) {
459 *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
461 memcpy(hdr->addr1, meshda, ETH_ALEN);
462 memcpy(hdr->addr2, meshsa, ETH_ALEN);
463 memcpy(hdr->addr3, meshsa, ETH_ALEN);
466 *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
468 memset(hdr->addr1, 0, ETH_ALEN); /* RA is resolved later */
469 memcpy(hdr->addr2, meshsa, ETH_ALEN);
470 memcpy(hdr->addr3, meshda, ETH_ALEN);
471 memcpy(hdr->addr4, meshsa, ETH_ALEN);
477 * ieee80211_new_mesh_header - create a new mesh header
478 * @meshhdr: uninitialized mesh header
479 * @sdata: mesh interface to be used
480 * @addr4or5: 1st address in the ae header, which may correspond to address 4
481 * (if addr6 is NULL) or address 5 (if addr6 is present). It may
483 * @addr6: 2nd address in the ae header, which corresponds to addr6 of the
486 * Return the header length.
488 int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
489 struct ieee80211_sub_if_data *sdata, char *addr4or5,
493 BUG_ON(!addr4or5 && addr6);
494 memset(meshhdr, 0, sizeof(*meshhdr));
495 meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
496 put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum);
497 sdata->u.mesh.mesh_seqnum++;
498 if (addr4or5 && !addr6) {
499 meshhdr->flags |= MESH_FLAGS_AE_A4;
501 memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
502 } else if (addr4or5 && addr6) {
503 meshhdr->flags |= MESH_FLAGS_AE_A5_A6;
504 aelen += 2 * ETH_ALEN;
505 memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
506 memcpy(meshhdr->eaddr2, addr6, ETH_ALEN);
511 static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
512 struct ieee80211_if_mesh *ifmsh)
516 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
517 printk(KERN_DEBUG "%s: running mesh housekeeping\n",
521 ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
522 mesh_path_expire(sdata);
524 free_plinks = mesh_plink_availables(sdata);
525 if (free_plinks != sdata->u.mesh.accepting_plinks)
526 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
528 mod_timer(&ifmsh->housekeeping_timer,
529 round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL));
532 static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
534 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
536 mesh_path_tx_root_frame(sdata);
537 mod_timer(&ifmsh->mesh_path_root_timer,
538 round_jiffies(TU_TO_EXP_TIME(
539 ifmsh->mshcfg.dot11MeshHWMPRannInterval)));
543 void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
545 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
547 /* use atomic bitops in case all timers fire at the same time */
549 if (del_timer_sync(&ifmsh->housekeeping_timer))
550 set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
551 if (del_timer_sync(&ifmsh->mesh_path_timer))
552 set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
553 if (del_timer_sync(&ifmsh->mesh_path_root_timer))
554 set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
557 void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata)
559 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
561 if (test_and_clear_bit(TMR_RUNNING_HK, &ifmsh->timers_running))
562 add_timer(&ifmsh->housekeeping_timer);
563 if (test_and_clear_bit(TMR_RUNNING_MP, &ifmsh->timers_running))
564 add_timer(&ifmsh->mesh_path_timer);
565 if (test_and_clear_bit(TMR_RUNNING_MPR, &ifmsh->timers_running))
566 add_timer(&ifmsh->mesh_path_root_timer);
567 ieee80211_mesh_root_setup(ifmsh);
571 void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
573 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
574 struct ieee80211_local *local = sdata->local;
576 local->fif_other_bss++;
577 /* mesh ifaces must set allmulti to forward mcast traffic */
578 atomic_inc(&local->iff_allmultis);
579 ieee80211_configure_filter(local);
581 ifmsh->mesh_cc_id = 0; /* Disabled */
582 ifmsh->mesh_sp_id = 0; /* Neighbor Offset */
583 ifmsh->mesh_auth_id = 0; /* Disabled */
584 set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
585 ieee80211_mesh_root_setup(ifmsh);
586 ieee80211_queue_work(&local->hw, &sdata->work);
587 sdata->vif.bss_conf.beacon_int = MESH_DEFAULT_BEACON_INTERVAL;
588 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON |
589 BSS_CHANGED_BEACON_ENABLED |
590 BSS_CHANGED_BEACON_INT);
593 void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
595 struct ieee80211_local *local = sdata->local;
596 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
598 ifmsh->mesh_id_len = 0;
599 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
600 sta_info_flush(local, NULL);
602 del_timer_sync(&sdata->u.mesh.housekeeping_timer);
603 del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
605 * If the timer fired while we waited for it, it will have
606 * requeued the work. Now the work will be running again
607 * but will not rearm the timer again because it checks
608 * whether the interface is running, which, at this point,
611 cancel_work_sync(&sdata->work);
613 local->fif_other_bss--;
614 atomic_dec(&local->iff_allmultis);
615 ieee80211_configure_filter(local);
618 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
620 struct ieee80211_mgmt *mgmt,
622 struct ieee80211_rx_status *rx_status)
624 struct ieee80211_local *local = sdata->local;
625 struct ieee802_11_elems elems;
626 struct ieee80211_channel *channel;
630 enum ieee80211_band band = rx_status->band;
632 /* ignore ProbeResp to foreign address */
633 if (stype == IEEE80211_STYPE_PROBE_RESP &&
634 compare_ether_addr(mgmt->da, sdata->vif.addr))
637 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
641 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
644 /* ignore beacons from secure mesh peers if our security is off */
645 if (elems.rsn_len && sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE)
648 if (elems.ds_params && elems.ds_params_len == 1)
649 freq = ieee80211_channel_to_frequency(elems.ds_params[0], band);
651 freq = rx_status->freq;
653 channel = ieee80211_get_channel(local->hw.wiphy, freq);
655 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
658 if (elems.mesh_id && elems.mesh_config &&
659 mesh_matches_local(&elems, sdata)) {
660 supp_rates = ieee80211_sta_get_rates(local, &elems, band);
661 mesh_neighbour_update(mgmt->sa, supp_rates, sdata, &elems);
665 static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
666 struct ieee80211_mgmt *mgmt,
668 struct ieee80211_rx_status *rx_status)
670 switch (mgmt->u.action.category) {
671 case WLAN_CATEGORY_SELF_PROTECTED:
672 switch (mgmt->u.action.u.self_prot.action_code) {
673 case WLAN_SP_MESH_PEERING_OPEN:
674 case WLAN_SP_MESH_PEERING_CLOSE:
675 case WLAN_SP_MESH_PEERING_CONFIRM:
676 mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
680 case WLAN_CATEGORY_MESH_ACTION:
681 if (mesh_action_is_path_sel(mgmt))
682 mesh_rx_path_sel_frame(sdata, mgmt, len);
687 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
690 struct ieee80211_rx_status *rx_status;
691 struct ieee80211_mgmt *mgmt;
694 rx_status = IEEE80211_SKB_RXCB(skb);
695 mgmt = (struct ieee80211_mgmt *) skb->data;
696 stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
699 case IEEE80211_STYPE_PROBE_RESP:
700 case IEEE80211_STYPE_BEACON:
701 ieee80211_mesh_rx_bcn_presp(sdata, stype, mgmt, skb->len,
704 case IEEE80211_STYPE_ACTION:
705 ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status);
710 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
712 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
714 if (ifmsh->preq_queue_len &&
716 ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval)))
717 mesh_path_start_discovery(sdata);
719 if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags))
720 mesh_mpath_table_grow();
722 if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE, &ifmsh->wrkq_flags))
723 mesh_mpp_table_grow();
725 if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags))
726 ieee80211_mesh_housekeeping(sdata, ifmsh);
728 if (test_and_clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags))
729 ieee80211_mesh_rootpath(sdata);
732 void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
734 struct ieee80211_sub_if_data *sdata;
737 list_for_each_entry_rcu(sdata, &local->interfaces, list)
738 if (ieee80211_vif_is_mesh(&sdata->vif))
739 ieee80211_queue_work(&local->hw, &sdata->work);
743 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
745 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
747 setup_timer(&ifmsh->housekeeping_timer,
748 ieee80211_mesh_housekeeping_timer,
749 (unsigned long) sdata);
751 ifmsh->accepting_plinks = true;
754 ifmsh->num_gates = 0;
755 atomic_set(&ifmsh->mpaths, 0);
756 mesh_rmc_init(sdata);
757 ifmsh->last_preq = jiffies;
758 /* Allocate all mesh structures when creating the first mesh interface. */
761 setup_timer(&ifmsh->mesh_path_timer,
762 ieee80211_mesh_path_timer,
763 (unsigned long) sdata);
764 setup_timer(&ifmsh->mesh_path_root_timer,
765 ieee80211_mesh_path_root_timer,
766 (unsigned long) sdata);
767 INIT_LIST_HEAD(&ifmsh->preq_queue.list);
768 spin_lock_init(&ifmsh->mesh_preq_queue_lock);