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"
15 #include "driver-ops.h"
17 static int mesh_allocated
;
18 static struct kmem_cache
*rm_cache
;
20 bool mesh_action_is_path_sel(struct ieee80211_mgmt
*mgmt
)
22 return (mgmt
->u
.action
.u
.mesh_action
.action_code
==
23 WLAN_MESH_ACTION_HWMP_PATH_SELECTION
);
26 void ieee80211s_init(void)
30 rm_cache
= kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry
),
34 void ieee80211s_stop(void)
38 mesh_pathtbl_unregister();
39 kmem_cache_destroy(rm_cache
);
42 static void ieee80211_mesh_housekeeping_timer(unsigned long data
)
44 struct ieee80211_sub_if_data
*sdata
= (void *) data
;
45 struct ieee80211_local
*local
= sdata
->local
;
46 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
48 set_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
);
50 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
54 * mesh_matches_local - check if the config of a mesh point matches ours
56 * @sdata: local mesh subif
57 * @ie: information elements of a management frame from the mesh peer
59 * This function checks if the mesh configuration of a mesh point matches the
60 * local mesh configuration, i.e. if both nodes belong to the same mesh network.
62 bool mesh_matches_local(struct ieee80211_sub_if_data
*sdata
,
63 struct ieee802_11_elems
*ie
)
65 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
67 struct cfg80211_chan_def sta_chan_def
;
70 * As support for each feature is added, check for matching
71 * - On mesh config capabilities
72 * - Power Save Support En
73 * - Sync support enabled
74 * - Sync support active
75 * - Sync support required from peer
77 * - Power management control on fc
79 if (!(ifmsh
->mesh_id_len
== ie
->mesh_id_len
&&
80 memcmp(ifmsh
->mesh_id
, ie
->mesh_id
, ie
->mesh_id_len
) == 0 &&
81 (ifmsh
->mesh_pp_id
== ie
->mesh_config
->meshconf_psel
) &&
82 (ifmsh
->mesh_pm_id
== ie
->mesh_config
->meshconf_pmetric
) &&
83 (ifmsh
->mesh_cc_id
== ie
->mesh_config
->meshconf_congest
) &&
84 (ifmsh
->mesh_sp_id
== ie
->mesh_config
->meshconf_synch
) &&
85 (ifmsh
->mesh_auth_id
== ie
->mesh_config
->meshconf_auth
)))
88 ieee80211_sta_get_rates(sdata
, ie
, ieee80211_get_sdata_band(sdata
),
91 if (sdata
->vif
.bss_conf
.basic_rates
!= basic_rates
)
94 ieee80211_ht_oper_to_chandef(sdata
->vif
.bss_conf
.chandef
.chan
,
95 ie
->ht_operation
, &sta_chan_def
);
97 if (!cfg80211_chandef_compatible(&sdata
->vif
.bss_conf
.chandef
,
105 * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
107 * @ie: information elements of a management frame from the mesh peer
109 bool mesh_peer_accepts_plinks(struct ieee802_11_elems
*ie
)
111 return (ie
->mesh_config
->meshconf_cap
&
112 IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS
) != 0;
116 * mesh_accept_plinks_update - update accepting_plink in local mesh beacons
118 * @sdata: mesh interface in which mesh beacons are going to be updated
120 * Returns: beacon changed flag if the beacon content changed.
122 u32
mesh_accept_plinks_update(struct ieee80211_sub_if_data
*sdata
)
127 /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
128 * the mesh interface might be able to establish plinks with peers that
129 * are already on the table but are not on PLINK_ESTAB state. However,
130 * in general the mesh interface is not accepting peer link requests
131 * from new peers, and that must be reflected in the beacon
133 free_plinks
= mesh_plink_availables(sdata
);
135 if (free_plinks
!= sdata
->u
.mesh
.accepting_plinks
) {
136 sdata
->u
.mesh
.accepting_plinks
= free_plinks
;
137 changed
= BSS_CHANGED_BEACON
;
144 * mesh_sta_cleanup - clean up any mesh sta state
146 * @sta: mesh sta to clean up.
148 void mesh_sta_cleanup(struct sta_info
*sta
)
150 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
154 * maybe userspace handles peer allocation and peering, but in either
155 * case the beacon is still generated by the kernel and we might need
158 changed
= mesh_accept_plinks_update(sdata
);
159 if (!sdata
->u
.mesh
.user_mpm
) {
160 changed
|= mesh_plink_deactivate(sta
);
161 del_timer_sync(&sta
->plink_timer
);
165 ieee80211_mbss_info_change_notify(sdata
, changed
);
168 int mesh_rmc_init(struct ieee80211_sub_if_data
*sdata
)
172 sdata
->u
.mesh
.rmc
= kmalloc(sizeof(struct mesh_rmc
), GFP_KERNEL
);
173 if (!sdata
->u
.mesh
.rmc
)
175 sdata
->u
.mesh
.rmc
->idx_mask
= RMC_BUCKETS
- 1;
176 for (i
= 0; i
< RMC_BUCKETS
; i
++)
177 INIT_LIST_HEAD(&sdata
->u
.mesh
.rmc
->bucket
[i
]);
181 void mesh_rmc_free(struct ieee80211_sub_if_data
*sdata
)
183 struct mesh_rmc
*rmc
= sdata
->u
.mesh
.rmc
;
184 struct rmc_entry
*p
, *n
;
187 if (!sdata
->u
.mesh
.rmc
)
190 for (i
= 0; i
< RMC_BUCKETS
; i
++) {
191 list_for_each_entry_safe(p
, n
, &rmc
->bucket
[i
], list
) {
193 kmem_cache_free(rm_cache
, p
);
198 sdata
->u
.mesh
.rmc
= NULL
;
202 * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
205 * @sa: source address
206 * @mesh_hdr: mesh_header
208 * Returns: 0 if the frame is not in the cache, nonzero otherwise.
210 * Checks using the source address and the mesh sequence number if we have
211 * received this frame lately. If the frame is not in the cache, it is added to
214 int mesh_rmc_check(struct ieee80211_sub_if_data
*sdata
,
215 const u8
*sa
, struct ieee80211s_hdr
*mesh_hdr
)
217 struct mesh_rmc
*rmc
= sdata
->u
.mesh
.rmc
;
221 struct rmc_entry
*p
, *n
;
223 /* Don't care about endianness since only match matters */
224 memcpy(&seqnum
, &mesh_hdr
->seqnum
, sizeof(mesh_hdr
->seqnum
));
225 idx
= le32_to_cpu(mesh_hdr
->seqnum
) & rmc
->idx_mask
;
226 list_for_each_entry_safe(p
, n
, &rmc
->bucket
[idx
], list
) {
228 if (time_after(jiffies
, p
->exp_time
) ||
229 entries
== RMC_QUEUE_MAX_LEN
) {
231 kmem_cache_free(rm_cache
, p
);
233 } else if ((seqnum
== p
->seqnum
) && ether_addr_equal(sa
, p
->sa
))
237 p
= kmem_cache_alloc(rm_cache
, GFP_ATOMIC
);
242 p
->exp_time
= jiffies
+ RMC_TIMEOUT
;
243 memcpy(p
->sa
, sa
, ETH_ALEN
);
244 list_add(&p
->list
, &rmc
->bucket
[idx
]);
248 int mesh_add_meshconf_ie(struct ieee80211_sub_if_data
*sdata
,
251 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
253 u8 meshconf_len
= sizeof(struct ieee80211_meshconf_ie
);
255 if (skb_tailroom(skb
) < 2 + meshconf_len
)
258 pos
= skb_put(skb
, 2 + meshconf_len
);
259 *pos
++ = WLAN_EID_MESH_CONFIG
;
260 *pos
++ = meshconf_len
;
262 /* Active path selection protocol ID */
263 *pos
++ = ifmsh
->mesh_pp_id
;
264 /* Active path selection metric ID */
265 *pos
++ = ifmsh
->mesh_pm_id
;
266 /* Congestion control mode identifier */
267 *pos
++ = ifmsh
->mesh_cc_id
;
268 /* Synchronization protocol identifier */
269 *pos
++ = ifmsh
->mesh_sp_id
;
270 /* Authentication Protocol identifier */
271 *pos
++ = ifmsh
->mesh_auth_id
;
272 /* Mesh Formation Info - number of neighbors */
273 neighbors
= atomic_read(&ifmsh
->estab_plinks
);
274 neighbors
= min_t(int, neighbors
, IEEE80211_MAX_MESH_PEERINGS
);
275 *pos
++ = neighbors
<< 1;
276 /* Mesh capability */
278 *pos
|= ifmsh
->mshcfg
.dot11MeshForwarding
?
279 IEEE80211_MESHCONF_CAPAB_FORWARDING
: 0x00;
280 *pos
|= ifmsh
->accepting_plinks
?
281 IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS
: 0x00;
282 /* Mesh PS mode. See IEEE802.11-2012 8.4.2.100.8 */
283 *pos
|= ifmsh
->ps_peers_deep_sleep
?
284 IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL
: 0x00;
285 *pos
++ |= ifmsh
->adjusting_tbtt
?
286 IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING
: 0x00;
292 int mesh_add_meshid_ie(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
)
294 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
297 if (skb_tailroom(skb
) < 2 + ifmsh
->mesh_id_len
)
300 pos
= skb_put(skb
, 2 + ifmsh
->mesh_id_len
);
301 *pos
++ = WLAN_EID_MESH_ID
;
302 *pos
++ = ifmsh
->mesh_id_len
;
303 if (ifmsh
->mesh_id_len
)
304 memcpy(pos
, ifmsh
->mesh_id
, ifmsh
->mesh_id_len
);
309 static int mesh_add_awake_window_ie(struct ieee80211_sub_if_data
*sdata
,
312 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
315 /* see IEEE802.11-2012 13.14.6 */
316 if (ifmsh
->ps_peers_light_sleep
== 0 &&
317 ifmsh
->ps_peers_deep_sleep
== 0 &&
318 ifmsh
->nonpeer_pm
== NL80211_MESH_POWER_ACTIVE
)
321 if (skb_tailroom(skb
) < 4)
324 pos
= skb_put(skb
, 2 + 2);
325 *pos
++ = WLAN_EID_MESH_AWAKE_WINDOW
;
327 put_unaligned_le16(ifmsh
->mshcfg
.dot11MeshAwakeWindowDuration
, pos
);
332 int mesh_add_vendor_ies(struct ieee80211_sub_if_data
*sdata
,
335 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
339 if (!ifmsh
->ie
|| !ifmsh
->ie_len
)
342 /* fast-forward to vendor IEs */
343 offset
= ieee80211_ie_split_vendor(ifmsh
->ie
, ifmsh
->ie_len
, 0);
346 len
= ifmsh
->ie_len
- offset
;
347 data
= ifmsh
->ie
+ offset
;
348 if (skb_tailroom(skb
) < len
)
350 memcpy(skb_put(skb
, len
), data
, len
);
356 int mesh_add_rsn_ie(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
)
358 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
362 if (!ifmsh
->ie
|| !ifmsh
->ie_len
)
367 while (data
< ifmsh
->ie
+ ifmsh
->ie_len
) {
368 if (*data
== WLAN_EID_RSN
) {
376 if (skb_tailroom(skb
) < len
)
378 memcpy(skb_put(skb
, len
), data
, len
);
384 static int mesh_add_ds_params_ie(struct ieee80211_sub_if_data
*sdata
,
387 struct ieee80211_chanctx_conf
*chanctx_conf
;
388 struct ieee80211_channel
*chan
;
391 if (skb_tailroom(skb
) < 3)
395 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
396 if (WARN_ON(!chanctx_conf
)) {
400 chan
= chanctx_conf
->def
.chan
;
403 pos
= skb_put(skb
, 2 + 1);
404 *pos
++ = WLAN_EID_DS_PARAMS
;
406 *pos
++ = ieee80211_frequency_to_channel(chan
->center_freq
);
411 int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data
*sdata
,
414 struct ieee80211_local
*local
= sdata
->local
;
415 enum ieee80211_band band
= ieee80211_get_sdata_band(sdata
);
416 struct ieee80211_supported_band
*sband
;
419 sband
= local
->hw
.wiphy
->bands
[band
];
420 if (!sband
->ht_cap
.ht_supported
||
421 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_20_NOHT
||
422 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_5
||
423 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_10
)
426 if (skb_tailroom(skb
) < 2 + sizeof(struct ieee80211_ht_cap
))
429 pos
= skb_put(skb
, 2 + sizeof(struct ieee80211_ht_cap
));
430 ieee80211_ie_build_ht_cap(pos
, &sband
->ht_cap
, sband
->ht_cap
.cap
);
435 int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data
*sdata
,
438 struct ieee80211_local
*local
= sdata
->local
;
439 struct ieee80211_chanctx_conf
*chanctx_conf
;
440 struct ieee80211_channel
*channel
;
441 enum nl80211_channel_type channel_type
=
442 cfg80211_get_chandef_type(&sdata
->vif
.bss_conf
.chandef
);
443 struct ieee80211_supported_band
*sband
;
444 struct ieee80211_sta_ht_cap
*ht_cap
;
448 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
449 if (WARN_ON(!chanctx_conf
)) {
453 channel
= chanctx_conf
->def
.chan
;
456 sband
= local
->hw
.wiphy
->bands
[channel
->band
];
457 ht_cap
= &sband
->ht_cap
;
459 if (!ht_cap
->ht_supported
|| channel_type
== NL80211_CHAN_NO_HT
)
462 if (skb_tailroom(skb
) < 2 + sizeof(struct ieee80211_ht_operation
))
465 pos
= skb_put(skb
, 2 + sizeof(struct ieee80211_ht_operation
));
466 ieee80211_ie_build_ht_oper(pos
, ht_cap
, &sdata
->vif
.bss_conf
.chandef
,
467 sdata
->vif
.bss_conf
.ht_operation_mode
);
472 static void ieee80211_mesh_path_timer(unsigned long data
)
474 struct ieee80211_sub_if_data
*sdata
=
475 (struct ieee80211_sub_if_data
*) data
;
477 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
480 static void ieee80211_mesh_path_root_timer(unsigned long data
)
482 struct ieee80211_sub_if_data
*sdata
=
483 (struct ieee80211_sub_if_data
*) data
;
484 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
486 set_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
488 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
491 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh
*ifmsh
)
493 if (ifmsh
->mshcfg
.dot11MeshHWMPRootMode
> IEEE80211_ROOTMODE_ROOT
)
494 set_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
496 clear_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
497 /* stop running timer */
498 del_timer_sync(&ifmsh
->mesh_path_root_timer
);
503 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
504 * @hdr: 802.11 frame header
505 * @fc: frame control field
506 * @meshda: destination address in the mesh
507 * @meshsa: source address address in the mesh. Same as TA, as frame is
508 * locally originated.
510 * Return the length of the 802.11 (does not include a mesh control header)
512 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr
*hdr
, __le16
*fc
,
513 const u8
*meshda
, const u8
*meshsa
)
515 if (is_multicast_ether_addr(meshda
)) {
516 *fc
|= cpu_to_le16(IEEE80211_FCTL_FROMDS
);
518 memcpy(hdr
->addr1
, meshda
, ETH_ALEN
);
519 memcpy(hdr
->addr2
, meshsa
, ETH_ALEN
);
520 memcpy(hdr
->addr3
, meshsa
, ETH_ALEN
);
523 *fc
|= cpu_to_le16(IEEE80211_FCTL_FROMDS
| IEEE80211_FCTL_TODS
);
525 memset(hdr
->addr1
, 0, ETH_ALEN
); /* RA is resolved later */
526 memcpy(hdr
->addr2
, meshsa
, ETH_ALEN
);
527 memcpy(hdr
->addr3
, meshda
, ETH_ALEN
);
528 memcpy(hdr
->addr4
, meshsa
, ETH_ALEN
);
534 * ieee80211_new_mesh_header - create a new mesh header
535 * @sdata: mesh interface to be used
536 * @meshhdr: uninitialized mesh header
537 * @addr4or5: 1st address in the ae header, which may correspond to address 4
538 * (if addr6 is NULL) or address 5 (if addr6 is present). It may
540 * @addr6: 2nd address in the ae header, which corresponds to addr6 of the
543 * Return the header length.
545 int ieee80211_new_mesh_header(struct ieee80211_sub_if_data
*sdata
,
546 struct ieee80211s_hdr
*meshhdr
,
547 const char *addr4or5
, const char *addr6
)
549 if (WARN_ON(!addr4or5
&& addr6
))
552 memset(meshhdr
, 0, sizeof(*meshhdr
));
554 meshhdr
->ttl
= sdata
->u
.mesh
.mshcfg
.dot11MeshTTL
;
556 /* FIXME: racy -- TX on multiple queues can be concurrent */
557 put_unaligned(cpu_to_le32(sdata
->u
.mesh
.mesh_seqnum
), &meshhdr
->seqnum
);
558 sdata
->u
.mesh
.mesh_seqnum
++;
560 if (addr4or5
&& !addr6
) {
561 meshhdr
->flags
|= MESH_FLAGS_AE_A4
;
562 memcpy(meshhdr
->eaddr1
, addr4or5
, ETH_ALEN
);
564 } else if (addr4or5
&& addr6
) {
565 meshhdr
->flags
|= MESH_FLAGS_AE_A5_A6
;
566 memcpy(meshhdr
->eaddr1
, addr4or5
, ETH_ALEN
);
567 memcpy(meshhdr
->eaddr2
, addr6
, ETH_ALEN
);
574 static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data
*sdata
)
576 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
579 ieee80211_sta_expire(sdata
, ifmsh
->mshcfg
.plink_timeout
* HZ
);
580 mesh_path_expire(sdata
);
582 changed
= mesh_accept_plinks_update(sdata
);
583 ieee80211_mbss_info_change_notify(sdata
, changed
);
585 mod_timer(&ifmsh
->housekeeping_timer
,
586 round_jiffies(jiffies
+
587 IEEE80211_MESH_HOUSEKEEPING_INTERVAL
));
590 static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data
*sdata
)
592 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
595 mesh_path_tx_root_frame(sdata
);
597 if (ifmsh
->mshcfg
.dot11MeshHWMPRootMode
== IEEE80211_PROACTIVE_RANN
)
598 interval
= ifmsh
->mshcfg
.dot11MeshHWMPRannInterval
;
600 interval
= ifmsh
->mshcfg
.dot11MeshHWMProotInterval
;
602 mod_timer(&ifmsh
->mesh_path_root_timer
,
603 round_jiffies(TU_TO_EXP_TIME(interval
)));
607 ieee80211_mesh_build_beacon(struct ieee80211_if_mesh
*ifmsh
)
609 struct beacon_data
*bcn
;
610 int head_len
, tail_len
;
612 struct ieee80211_mgmt
*mgmt
;
613 struct ieee80211_chanctx_conf
*chanctx_conf
;
614 struct mesh_csa_settings
*csa
;
615 enum ieee80211_band band
;
617 struct ieee80211_sub_if_data
*sdata
;
618 int hdr_len
= offsetof(struct ieee80211_mgmt
, u
.beacon
) +
619 sizeof(mgmt
->u
.beacon
);
621 sdata
= container_of(ifmsh
, struct ieee80211_sub_if_data
, u
.mesh
);
623 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
624 band
= chanctx_conf
->def
.chan
->band
;
629 /* Channel Switch Announcement */
630 2 + sizeof(struct ieee80211_channel_sw_ie
) +
631 /* Mesh Channel Swith Parameters */
632 2 + sizeof(struct ieee80211_mesh_chansw_params_ie
) +
633 2 + 8 + /* supported rates */
634 2 + 3; /* DS params */
635 tail_len
= 2 + (IEEE80211_MAX_SUPP_RATES
- 8) +
636 2 + sizeof(struct ieee80211_ht_cap
) +
637 2 + sizeof(struct ieee80211_ht_operation
) +
638 2 + ifmsh
->mesh_id_len
+
639 2 + sizeof(struct ieee80211_meshconf_ie
) +
640 2 + sizeof(__le16
) + /* awake window */
643 bcn
= kzalloc(sizeof(*bcn
) + head_len
+ tail_len
, GFP_KERNEL
);
644 /* need an skb for IE builders to operate on */
645 skb
= dev_alloc_skb(max(head_len
, tail_len
));
651 * pointers go into the block we allocated,
652 * memory is | beacon_data | head | tail |
654 bcn
->head
= ((u8
*) bcn
) + sizeof(*bcn
);
656 /* fill in the head */
657 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, hdr_len
);
658 memset(mgmt
, 0, hdr_len
);
659 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
660 IEEE80211_STYPE_BEACON
);
661 eth_broadcast_addr(mgmt
->da
);
662 memcpy(mgmt
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
663 memcpy(mgmt
->bssid
, sdata
->vif
.addr
, ETH_ALEN
);
664 ieee80211_mps_set_frame_flags(sdata
, NULL
, (void *) mgmt
);
665 mgmt
->u
.beacon
.beacon_int
=
666 cpu_to_le16(sdata
->vif
.bss_conf
.beacon_int
);
667 mgmt
->u
.beacon
.capab_info
|= cpu_to_le16(
668 sdata
->u
.mesh
.security
? WLAN_CAPABILITY_PRIVACY
: 0);
670 pos
= skb_put(skb
, 2);
671 *pos
++ = WLAN_EID_SSID
;
675 csa
= rcu_dereference(ifmsh
->csa
);
679 pos
= skb_put(skb
, 13);
681 *pos
++ = WLAN_EID_CHANNEL_SWITCH
;
684 *pos
++ = ieee80211_frequency_to_channel(
685 csa
->settings
.chandef
.chan
->center_freq
);
686 sdata
->csa_counter_offset_beacon
= hdr_len
+ 6;
687 *pos
++ = csa
->settings
.count
;
688 *pos
++ = WLAN_EID_CHAN_SWITCH_PARAM
;
690 if (ifmsh
->chsw_init
) {
691 *pos
++ = ifmsh
->mshcfg
.dot11MeshTTL
;
692 *pos
|= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR
;
694 *pos
++ = ifmsh
->chsw_ttl
;
696 *pos
++ |= csa
->settings
.block_tx
?
697 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT
: 0x00;
698 put_unaligned_le16(WLAN_REASON_MESH_CHAN
, pos
);
700 pre_value
= cpu_to_le16(ifmsh
->pre_value
);
701 memcpy(pos
, &pre_value
, 2);
706 if (ieee80211_add_srates_ie(sdata
, skb
, true, band
) ||
707 mesh_add_ds_params_ie(sdata
, skb
))
710 bcn
->head_len
= skb
->len
;
711 memcpy(bcn
->head
, skb
->data
, bcn
->head_len
);
715 bcn
->tail
= bcn
->head
+ bcn
->head_len
;
717 if (ieee80211_add_ext_srates_ie(sdata
, skb
, true, band
) ||
718 mesh_add_rsn_ie(sdata
, skb
) ||
719 mesh_add_ht_cap_ie(sdata
, skb
) ||
720 mesh_add_ht_oper_ie(sdata
, skb
) ||
721 mesh_add_meshid_ie(sdata
, skb
) ||
722 mesh_add_meshconf_ie(sdata
, skb
) ||
723 mesh_add_awake_window_ie(sdata
, skb
) ||
724 mesh_add_vendor_ies(sdata
, skb
))
727 bcn
->tail_len
= skb
->len
;
728 memcpy(bcn
->tail
, skb
->data
, bcn
->tail_len
);
731 rcu_assign_pointer(ifmsh
->beacon
, bcn
);
740 ieee80211_mesh_rebuild_beacon(struct ieee80211_sub_if_data
*sdata
)
742 struct beacon_data
*old_bcn
;
745 old_bcn
= rcu_dereference_protected(sdata
->u
.mesh
.beacon
,
746 lockdep_is_held(&sdata
->wdev
.mtx
));
747 ret
= ieee80211_mesh_build_beacon(&sdata
->u
.mesh
);
749 /* just reuse old beacon */
753 kfree_rcu(old_bcn
, rcu_head
);
757 void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
760 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
761 unsigned long bits
= changed
;
767 /* if we race with running work, worst case this work becomes a noop */
768 for_each_set_bit(bit
, &bits
, sizeof(changed
) * BITS_PER_BYTE
)
769 set_bit(bit
, &ifmsh
->mbss_changed
);
770 set_bit(MESH_WORK_MBSS_CHANGED
, &ifmsh
->wrkq_flags
);
771 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
774 int ieee80211_start_mesh(struct ieee80211_sub_if_data
*sdata
)
776 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
777 struct ieee80211_local
*local
= sdata
->local
;
778 u32 changed
= BSS_CHANGED_BEACON
|
779 BSS_CHANGED_BEACON_ENABLED
|
781 BSS_CHANGED_BASIC_RATES
|
782 BSS_CHANGED_BEACON_INT
;
784 local
->fif_other_bss
++;
785 /* mesh ifaces must set allmulti to forward mcast traffic */
786 atomic_inc(&local
->iff_allmultis
);
787 ieee80211_configure_filter(local
);
789 ifmsh
->mesh_cc_id
= 0; /* Disabled */
790 /* register sync ops from extensible synchronization framework */
791 ifmsh
->sync_ops
= ieee80211_mesh_sync_ops_get(ifmsh
->mesh_sp_id
);
792 ifmsh
->adjusting_tbtt
= false;
793 ifmsh
->sync_offset_clockdrift_max
= 0;
794 set_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
);
795 ieee80211_mesh_root_setup(ifmsh
);
796 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
797 sdata
->vif
.bss_conf
.ht_operation_mode
=
798 ifmsh
->mshcfg
.ht_opmode
;
799 sdata
->vif
.bss_conf
.enable_beacon
= true;
801 changed
|= ieee80211_mps_local_status_update(sdata
);
803 if (ieee80211_mesh_build_beacon(ifmsh
)) {
804 ieee80211_stop_mesh(sdata
);
808 ieee80211_bss_info_change_notify(sdata
, changed
);
810 netif_carrier_on(sdata
->dev
);
814 void ieee80211_stop_mesh(struct ieee80211_sub_if_data
*sdata
)
816 struct ieee80211_local
*local
= sdata
->local
;
817 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
818 struct beacon_data
*bcn
;
820 netif_carrier_off(sdata
->dev
);
822 /* stop the beacon */
823 ifmsh
->mesh_id_len
= 0;
824 sdata
->vif
.bss_conf
.enable_beacon
= false;
825 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED
, &sdata
->state
);
826 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON_ENABLED
);
827 bcn
= rcu_dereference_protected(ifmsh
->beacon
,
828 lockdep_is_held(&sdata
->wdev
.mtx
));
829 rcu_assign_pointer(ifmsh
->beacon
, NULL
);
830 kfree_rcu(bcn
, rcu_head
);
832 /* flush STAs and mpaths on this iface */
833 sta_info_flush(sdata
);
834 mesh_path_flush_by_iface(sdata
);
836 /* free all potentially still buffered group-addressed frames */
837 local
->total_ps_buffered
-= skb_queue_len(&ifmsh
->ps
.bc_buf
);
838 skb_queue_purge(&ifmsh
->ps
.bc_buf
);
840 del_timer_sync(&sdata
->u
.mesh
.housekeeping_timer
);
841 del_timer_sync(&sdata
->u
.mesh
.mesh_path_root_timer
);
842 del_timer_sync(&sdata
->u
.mesh
.mesh_path_timer
);
844 /* clear any mesh work (for next join) we may have accrued */
845 ifmsh
->wrkq_flags
= 0;
846 ifmsh
->mbss_changed
= 0;
848 local
->fif_other_bss
--;
849 atomic_dec(&local
->iff_allmultis
);
850 ieee80211_configure_filter(local
);
854 ieee80211_mesh_process_chnswitch(struct ieee80211_sub_if_data
*sdata
,
855 struct ieee802_11_elems
*elems
, bool beacon
)
857 struct cfg80211_csa_settings params
;
858 struct ieee80211_csa_ie csa_ie
;
859 struct ieee80211_chanctx_conf
*chanctx_conf
;
860 struct ieee80211_chanctx
*chanctx
;
861 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
862 enum ieee80211_band band
= ieee80211_get_sdata_band(sdata
);
863 int err
, num_chanctx
;
866 if (sdata
->vif
.csa_active
)
872 sta_flags
= IEEE80211_STA_DISABLE_VHT
;
873 switch (sdata
->vif
.bss_conf
.chandef
.width
) {
874 case NL80211_CHAN_WIDTH_20_NOHT
:
875 sta_flags
|= IEEE80211_STA_DISABLE_HT
;
876 case NL80211_CHAN_WIDTH_20
:
877 sta_flags
|= IEEE80211_STA_DISABLE_40MHZ
;
883 memset(¶ms
, 0, sizeof(params
));
884 memset(&csa_ie
, 0, sizeof(csa_ie
));
885 err
= ieee80211_parse_ch_switch_ie(sdata
, elems
, beacon
, band
,
886 sta_flags
, sdata
->vif
.addr
,
893 params
.chandef
= csa_ie
.chandef
;
894 params
.count
= csa_ie
.count
;
896 if (sdata
->vif
.bss_conf
.chandef
.chan
->band
!=
897 params
.chandef
.chan
->band
)
900 if (!cfg80211_chandef_usable(sdata
->local
->hw
.wiphy
, ¶ms
.chandef
,
901 IEEE80211_CHAN_DISABLED
)) {
903 "mesh STA %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), aborting\n",
905 params
.chandef
.chan
->center_freq
,
906 params
.chandef
.width
,
907 params
.chandef
.center_freq1
,
908 params
.chandef
.center_freq2
);
912 err
= cfg80211_chandef_dfs_required(sdata
->local
->hw
.wiphy
,
917 params
.radar_required
= true;
918 /* TODO: DFS not (yet) supported */
923 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
925 goto failed_chswitch
;
927 /* don't handle for multi-VIF cases */
928 chanctx
= container_of(chanctx_conf
, struct ieee80211_chanctx
, conf
);
929 if (chanctx
->refcount
> 1)
930 goto failed_chswitch
;
933 list_for_each_entry_rcu(chanctx
, &sdata
->local
->chanctx_list
, list
)
937 goto failed_chswitch
;
942 "received channel switch announcement to go to channel %d MHz\n",
943 params
.chandef
.chan
->center_freq
);
945 params
.block_tx
= csa_ie
.mode
& WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT
;
947 ifmsh
->chsw_ttl
= csa_ie
.ttl
- 1;
948 if (ifmsh
->pre_value
>= csa_ie
.pre_value
)
950 ifmsh
->pre_value
= csa_ie
.pre_value
;
953 if (ifmsh
->chsw_ttl
< ifmsh
->mshcfg
.dot11MeshTTL
) {
954 if (ieee80211_mesh_csa_beacon(sdata
, ¶ms
, false) < 0)
960 sdata
->csa_radar_required
= params
.radar_required
;
963 ieee80211_stop_queues_by_reason(&sdata
->local
->hw
,
964 IEEE80211_MAX_QUEUE_MAP
,
965 IEEE80211_QUEUE_STOP_REASON_CSA
);
967 sdata
->local
->csa_chandef
= params
.chandef
;
968 sdata
->vif
.csa_active
= true;
970 ieee80211_bss_info_change_notify(sdata
, err
);
971 drv_channel_switch_beacon(sdata
, ¶ms
.chandef
);
980 ieee80211_mesh_rx_probe_req(struct ieee80211_sub_if_data
*sdata
,
981 struct ieee80211_mgmt
*mgmt
, size_t len
)
983 struct ieee80211_local
*local
= sdata
->local
;
984 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
985 struct sk_buff
*presp
;
986 struct beacon_data
*bcn
;
987 struct ieee80211_mgmt
*hdr
;
988 struct ieee802_11_elems elems
;
992 pos
= mgmt
->u
.probe_req
.variable
;
993 baselen
= (u8
*) pos
- (u8
*) mgmt
;
997 ieee802_11_parse_elems(pos
, len
- baselen
, false, &elems
);
1002 /* 802.11-2012 10.1.4.3.2 */
1003 if ((!ether_addr_equal(mgmt
->da
, sdata
->vif
.addr
) &&
1004 !is_broadcast_ether_addr(mgmt
->da
)) ||
1005 elems
.ssid_len
!= 0)
1008 if (elems
.mesh_id_len
!= 0 &&
1009 (elems
.mesh_id_len
!= ifmsh
->mesh_id_len
||
1010 memcmp(elems
.mesh_id
, ifmsh
->mesh_id
, ifmsh
->mesh_id_len
)))
1014 bcn
= rcu_dereference(ifmsh
->beacon
);
1019 presp
= dev_alloc_skb(local
->tx_headroom
+
1020 bcn
->head_len
+ bcn
->tail_len
);
1024 skb_reserve(presp
, local
->tx_headroom
);
1025 memcpy(skb_put(presp
, bcn
->head_len
), bcn
->head
, bcn
->head_len
);
1026 memcpy(skb_put(presp
, bcn
->tail_len
), bcn
->tail
, bcn
->tail_len
);
1027 hdr
= (struct ieee80211_mgmt
*) presp
->data
;
1028 hdr
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
1029 IEEE80211_STYPE_PROBE_RESP
);
1030 memcpy(hdr
->da
, mgmt
->sa
, ETH_ALEN
);
1031 IEEE80211_SKB_CB(presp
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
1032 ieee80211_tx_skb(sdata
, presp
);
1037 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data
*sdata
,
1039 struct ieee80211_mgmt
*mgmt
,
1041 struct ieee80211_rx_status
*rx_status
)
1043 struct ieee80211_local
*local
= sdata
->local
;
1044 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1045 struct ieee802_11_elems elems
;
1046 struct ieee80211_channel
*channel
;
1049 enum ieee80211_band band
= rx_status
->band
;
1051 /* ignore ProbeResp to foreign address */
1052 if (stype
== IEEE80211_STYPE_PROBE_RESP
&&
1053 !ether_addr_equal(mgmt
->da
, sdata
->vif
.addr
))
1056 baselen
= (u8
*) mgmt
->u
.probe_resp
.variable
- (u8
*) mgmt
;
1060 ieee802_11_parse_elems(mgmt
->u
.probe_resp
.variable
, len
- baselen
,
1063 /* ignore non-mesh or secure / unsecure mismatch */
1064 if ((!elems
.mesh_id
|| !elems
.mesh_config
) ||
1065 (elems
.rsn
&& sdata
->u
.mesh
.security
== IEEE80211_MESH_SEC_NONE
) ||
1066 (!elems
.rsn
&& sdata
->u
.mesh
.security
!= IEEE80211_MESH_SEC_NONE
))
1069 if (elems
.ds_params
)
1070 freq
= ieee80211_channel_to_frequency(elems
.ds_params
[0], band
);
1072 freq
= rx_status
->freq
;
1074 channel
= ieee80211_get_channel(local
->hw
.wiphy
, freq
);
1076 if (!channel
|| channel
->flags
& IEEE80211_CHAN_DISABLED
)
1079 if (mesh_matches_local(sdata
, &elems
))
1080 mesh_neighbour_update(sdata
, mgmt
->sa
, &elems
);
1082 if (ifmsh
->sync_ops
)
1083 ifmsh
->sync_ops
->rx_bcn_presp(sdata
,
1084 stype
, mgmt
, &elems
, rx_status
);
1086 if (!ifmsh
->chsw_init
)
1087 ieee80211_mesh_process_chnswitch(sdata
, &elems
, true);
1090 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data
*sdata
)
1092 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1093 struct mesh_csa_settings
*tmp_csa_settings
;
1096 /* Reset the TTL value and Initiator flag */
1097 ifmsh
->chsw_init
= false;
1098 ifmsh
->chsw_ttl
= 0;
1100 /* Remove the CSA and MCSP elements from the beacon */
1101 tmp_csa_settings
= rcu_dereference(ifmsh
->csa
);
1102 rcu_assign_pointer(ifmsh
->csa
, NULL
);
1103 kfree_rcu(tmp_csa_settings
, rcu_head
);
1104 ret
= ieee80211_mesh_rebuild_beacon(sdata
);
1108 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON
);
1110 mcsa_dbg(sdata
, "complete switching to center freq %d MHz",
1111 sdata
->vif
.bss_conf
.chandef
.chan
->center_freq
);
1115 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data
*sdata
,
1116 struct cfg80211_csa_settings
*csa_settings
,
1119 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1120 struct mesh_csa_settings
*tmp_csa_settings
;
1123 tmp_csa_settings
= kmalloc(sizeof(*tmp_csa_settings
),
1125 if (!tmp_csa_settings
)
1128 memcpy(&tmp_csa_settings
->settings
, csa_settings
,
1129 sizeof(struct cfg80211_csa_settings
));
1131 rcu_assign_pointer(ifmsh
->csa
, tmp_csa_settings
);
1133 ret
= ieee80211_mesh_rebuild_beacon(sdata
);
1135 tmp_csa_settings
= rcu_dereference(ifmsh
->csa
);
1136 rcu_assign_pointer(ifmsh
->csa
, NULL
);
1137 kfree_rcu(tmp_csa_settings
, rcu_head
);
1141 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON
);
1144 ieee80211_send_action_csa(sdata
, csa_settings
);
1149 static int mesh_fwd_csa_frame(struct ieee80211_sub_if_data
*sdata
,
1150 struct ieee80211_mgmt
*mgmt
, size_t len
)
1152 struct ieee80211_mgmt
*mgmt_fwd
;
1153 struct sk_buff
*skb
;
1154 struct ieee80211_local
*local
= sdata
->local
;
1155 u8
*pos
= mgmt
->u
.action
.u
.chan_switch
.variable
;
1158 skb
= dev_alloc_skb(local
->tx_headroom
+ len
);
1161 skb_reserve(skb
, local
->tx_headroom
);
1162 mgmt_fwd
= (struct ieee80211_mgmt
*) skb_put(skb
, len
);
1164 /* offset_ttl is based on whether the secondary channel
1165 * offset is available or not. Substract 1 from the mesh TTL
1166 * and disable the initiator flag before forwarding.
1168 offset_ttl
= (len
< 42) ? 7 : 10;
1169 *(pos
+ offset_ttl
) -= 1;
1170 *(pos
+ offset_ttl
+ 1) &= ~WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR
;
1172 memcpy(mgmt_fwd
, mgmt
, len
);
1173 eth_broadcast_addr(mgmt_fwd
->da
);
1174 memcpy(mgmt_fwd
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
1175 memcpy(mgmt_fwd
->bssid
, sdata
->vif
.addr
, ETH_ALEN
);
1177 ieee80211_tx_skb(sdata
, skb
);
1181 static void mesh_rx_csa_frame(struct ieee80211_sub_if_data
*sdata
,
1182 struct ieee80211_mgmt
*mgmt
, size_t len
)
1184 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1185 struct ieee802_11_elems elems
;
1187 bool fwd_csa
= true;
1191 if (mgmt
->u
.action
.u
.measurement
.action_code
!=
1192 WLAN_ACTION_SPCT_CHL_SWITCH
)
1195 pos
= mgmt
->u
.action
.u
.chan_switch
.variable
;
1196 baselen
= offsetof(struct ieee80211_mgmt
,
1197 u
.action
.u
.chan_switch
.variable
);
1198 ieee802_11_parse_elems(pos
, len
- baselen
, false, &elems
);
1200 ifmsh
->chsw_ttl
= elems
.mesh_chansw_params_ie
->mesh_ttl
;
1201 if (!--ifmsh
->chsw_ttl
)
1204 pre_value
= le16_to_cpu(elems
.mesh_chansw_params_ie
->mesh_pre_value
);
1205 if (ifmsh
->pre_value
>= pre_value
)
1208 ifmsh
->pre_value
= pre_value
;
1210 if (!ieee80211_mesh_process_chnswitch(sdata
, &elems
, false)) {
1211 mcsa_dbg(sdata
, "Failed to process CSA action frame");
1215 /* forward or re-broadcast the CSA frame */
1217 if (mesh_fwd_csa_frame(sdata
, mgmt
, len
) < 0)
1218 mcsa_dbg(sdata
, "Failed to forward the CSA frame");
1222 static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data
*sdata
,
1223 struct ieee80211_mgmt
*mgmt
,
1225 struct ieee80211_rx_status
*rx_status
)
1227 switch (mgmt
->u
.action
.category
) {
1228 case WLAN_CATEGORY_SELF_PROTECTED
:
1229 switch (mgmt
->u
.action
.u
.self_prot
.action_code
) {
1230 case WLAN_SP_MESH_PEERING_OPEN
:
1231 case WLAN_SP_MESH_PEERING_CLOSE
:
1232 case WLAN_SP_MESH_PEERING_CONFIRM
:
1233 mesh_rx_plink_frame(sdata
, mgmt
, len
, rx_status
);
1237 case WLAN_CATEGORY_MESH_ACTION
:
1238 if (mesh_action_is_path_sel(mgmt
))
1239 mesh_rx_path_sel_frame(sdata
, mgmt
, len
);
1241 case WLAN_CATEGORY_SPECTRUM_MGMT
:
1242 mesh_rx_csa_frame(sdata
, mgmt
, len
);
1247 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1248 struct sk_buff
*skb
)
1250 struct ieee80211_rx_status
*rx_status
;
1251 struct ieee80211_mgmt
*mgmt
;
1256 /* mesh already went down */
1257 if (!sdata
->wdev
.mesh_id_len
)
1260 rx_status
= IEEE80211_SKB_RXCB(skb
);
1261 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1262 stype
= le16_to_cpu(mgmt
->frame_control
) & IEEE80211_FCTL_STYPE
;
1265 case IEEE80211_STYPE_PROBE_RESP
:
1266 case IEEE80211_STYPE_BEACON
:
1267 ieee80211_mesh_rx_bcn_presp(sdata
, stype
, mgmt
, skb
->len
,
1270 case IEEE80211_STYPE_PROBE_REQ
:
1271 ieee80211_mesh_rx_probe_req(sdata
, mgmt
, skb
->len
);
1273 case IEEE80211_STYPE_ACTION
:
1274 ieee80211_mesh_rx_mgmt_action(sdata
, mgmt
, skb
->len
, rx_status
);
1278 sdata_unlock(sdata
);
1281 static void mesh_bss_info_changed(struct ieee80211_sub_if_data
*sdata
)
1283 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1284 u32 bit
, changed
= 0;
1286 for_each_set_bit(bit
, &ifmsh
->mbss_changed
,
1287 sizeof(changed
) * BITS_PER_BYTE
) {
1288 clear_bit(bit
, &ifmsh
->mbss_changed
);
1289 changed
|= BIT(bit
);
1292 if (sdata
->vif
.bss_conf
.enable_beacon
&&
1293 (changed
& (BSS_CHANGED_BEACON
|
1295 BSS_CHANGED_BASIC_RATES
|
1296 BSS_CHANGED_BEACON_INT
)))
1297 if (ieee80211_mesh_rebuild_beacon(sdata
))
1300 ieee80211_bss_info_change_notify(sdata
, changed
);
1303 void ieee80211_mesh_work(struct ieee80211_sub_if_data
*sdata
)
1305 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1309 /* mesh already went down */
1310 if (!sdata
->wdev
.mesh_id_len
)
1313 if (ifmsh
->preq_queue_len
&&
1315 ifmsh
->last_preq
+ msecs_to_jiffies(ifmsh
->mshcfg
.dot11MeshHWMPpreqMinInterval
)))
1316 mesh_path_start_discovery(sdata
);
1318 if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE
, &ifmsh
->wrkq_flags
))
1319 mesh_mpath_table_grow();
1321 if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE
, &ifmsh
->wrkq_flags
))
1322 mesh_mpp_table_grow();
1324 if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
))
1325 ieee80211_mesh_housekeeping(sdata
);
1327 if (test_and_clear_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
))
1328 ieee80211_mesh_rootpath(sdata
);
1330 if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST
, &ifmsh
->wrkq_flags
))
1331 mesh_sync_adjust_tbtt(sdata
);
1333 if (test_and_clear_bit(MESH_WORK_MBSS_CHANGED
, &ifmsh
->wrkq_flags
))
1334 mesh_bss_info_changed(sdata
);
1336 sdata_unlock(sdata
);
1339 void ieee80211_mesh_notify_scan_completed(struct ieee80211_local
*local
)
1341 struct ieee80211_sub_if_data
*sdata
;
1344 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
)
1345 if (ieee80211_vif_is_mesh(&sdata
->vif
) &&
1346 ieee80211_sdata_running(sdata
))
1347 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
1351 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data
*sdata
)
1353 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1354 static u8 zero_addr
[ETH_ALEN
] = {};
1356 setup_timer(&ifmsh
->housekeeping_timer
,
1357 ieee80211_mesh_housekeeping_timer
,
1358 (unsigned long) sdata
);
1360 ifmsh
->accepting_plinks
= true;
1361 atomic_set(&ifmsh
->mpaths
, 0);
1362 mesh_rmc_init(sdata
);
1363 ifmsh
->last_preq
= jiffies
;
1364 ifmsh
->next_perr
= jiffies
;
1365 ifmsh
->chsw_init
= false;
1366 /* Allocate all mesh structures when creating the first mesh interface. */
1367 if (!mesh_allocated
)
1369 setup_timer(&ifmsh
->mesh_path_timer
,
1370 ieee80211_mesh_path_timer
,
1371 (unsigned long) sdata
);
1372 setup_timer(&ifmsh
->mesh_path_root_timer
,
1373 ieee80211_mesh_path_root_timer
,
1374 (unsigned long) sdata
);
1375 INIT_LIST_HEAD(&ifmsh
->preq_queue
.list
);
1376 skb_queue_head_init(&ifmsh
->ps
.bc_buf
);
1377 spin_lock_init(&ifmsh
->mesh_preq_queue_lock
);
1378 spin_lock_init(&ifmsh
->sync_offset_lock
);
1379 RCU_INIT_POINTER(ifmsh
->beacon
, NULL
);
1381 sdata
->vif
.bss_conf
.bssid
= zero_addr
;