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 /* save a pointer for quick updates in pre-tbtt */
263 ifmsh
->meshconf_offset
= pos
- skb
->data
;
265 /* Active path selection protocol ID */
266 *pos
++ = ifmsh
->mesh_pp_id
;
267 /* Active path selection metric ID */
268 *pos
++ = ifmsh
->mesh_pm_id
;
269 /* Congestion control mode identifier */
270 *pos
++ = ifmsh
->mesh_cc_id
;
271 /* Synchronization protocol identifier */
272 *pos
++ = ifmsh
->mesh_sp_id
;
273 /* Authentication Protocol identifier */
274 *pos
++ = ifmsh
->mesh_auth_id
;
275 /* Mesh Formation Info - number of neighbors */
276 neighbors
= atomic_read(&ifmsh
->estab_plinks
);
277 neighbors
= min_t(int, neighbors
, IEEE80211_MAX_MESH_PEERINGS
);
278 *pos
++ = neighbors
<< 1;
279 /* Mesh capability */
281 *pos
|= ifmsh
->mshcfg
.dot11MeshForwarding
?
282 IEEE80211_MESHCONF_CAPAB_FORWARDING
: 0x00;
283 *pos
|= ifmsh
->accepting_plinks
?
284 IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS
: 0x00;
285 /* Mesh PS mode. See IEEE802.11-2012 8.4.2.100.8 */
286 *pos
|= ifmsh
->ps_peers_deep_sleep
?
287 IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL
: 0x00;
288 *pos
++ |= ifmsh
->adjusting_tbtt
?
289 IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING
: 0x00;
295 int mesh_add_meshid_ie(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
)
297 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
300 if (skb_tailroom(skb
) < 2 + ifmsh
->mesh_id_len
)
303 pos
= skb_put(skb
, 2 + ifmsh
->mesh_id_len
);
304 *pos
++ = WLAN_EID_MESH_ID
;
305 *pos
++ = ifmsh
->mesh_id_len
;
306 if (ifmsh
->mesh_id_len
)
307 memcpy(pos
, ifmsh
->mesh_id
, ifmsh
->mesh_id_len
);
312 static int mesh_add_awake_window_ie(struct ieee80211_sub_if_data
*sdata
,
315 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
318 /* see IEEE802.11-2012 13.14.6 */
319 if (ifmsh
->ps_peers_light_sleep
== 0 &&
320 ifmsh
->ps_peers_deep_sleep
== 0 &&
321 ifmsh
->nonpeer_pm
== NL80211_MESH_POWER_ACTIVE
)
324 if (skb_tailroom(skb
) < 4)
327 pos
= skb_put(skb
, 2 + 2);
328 *pos
++ = WLAN_EID_MESH_AWAKE_WINDOW
;
330 put_unaligned_le16(ifmsh
->mshcfg
.dot11MeshAwakeWindowDuration
, pos
);
335 int mesh_add_vendor_ies(struct ieee80211_sub_if_data
*sdata
,
338 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
342 if (!ifmsh
->ie
|| !ifmsh
->ie_len
)
345 /* fast-forward to vendor IEs */
346 offset
= ieee80211_ie_split_vendor(ifmsh
->ie
, ifmsh
->ie_len
, 0);
349 len
= ifmsh
->ie_len
- offset
;
350 data
= ifmsh
->ie
+ offset
;
351 if (skb_tailroom(skb
) < len
)
353 memcpy(skb_put(skb
, len
), data
, len
);
359 int mesh_add_rsn_ie(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
)
361 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
365 if (!ifmsh
->ie
|| !ifmsh
->ie_len
)
370 while (data
< ifmsh
->ie
+ ifmsh
->ie_len
) {
371 if (*data
== WLAN_EID_RSN
) {
379 if (skb_tailroom(skb
) < len
)
381 memcpy(skb_put(skb
, len
), data
, len
);
387 static int mesh_add_ds_params_ie(struct ieee80211_sub_if_data
*sdata
,
390 struct ieee80211_chanctx_conf
*chanctx_conf
;
391 struct ieee80211_channel
*chan
;
394 if (skb_tailroom(skb
) < 3)
398 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
399 if (WARN_ON(!chanctx_conf
)) {
403 chan
= chanctx_conf
->def
.chan
;
406 pos
= skb_put(skb
, 2 + 1);
407 *pos
++ = WLAN_EID_DS_PARAMS
;
409 *pos
++ = ieee80211_frequency_to_channel(chan
->center_freq
);
414 int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data
*sdata
,
417 struct ieee80211_local
*local
= sdata
->local
;
418 enum ieee80211_band band
= ieee80211_get_sdata_band(sdata
);
419 struct ieee80211_supported_band
*sband
;
422 sband
= local
->hw
.wiphy
->bands
[band
];
423 if (!sband
->ht_cap
.ht_supported
||
424 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_20_NOHT
||
425 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_5
||
426 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_10
)
429 if (skb_tailroom(skb
) < 2 + sizeof(struct ieee80211_ht_cap
))
432 pos
= skb_put(skb
, 2 + sizeof(struct ieee80211_ht_cap
));
433 ieee80211_ie_build_ht_cap(pos
, &sband
->ht_cap
, sband
->ht_cap
.cap
);
438 int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data
*sdata
,
441 struct ieee80211_local
*local
= sdata
->local
;
442 struct ieee80211_chanctx_conf
*chanctx_conf
;
443 struct ieee80211_channel
*channel
;
444 enum nl80211_channel_type channel_type
=
445 cfg80211_get_chandef_type(&sdata
->vif
.bss_conf
.chandef
);
446 struct ieee80211_supported_band
*sband
;
447 struct ieee80211_sta_ht_cap
*ht_cap
;
451 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
452 if (WARN_ON(!chanctx_conf
)) {
456 channel
= chanctx_conf
->def
.chan
;
459 sband
= local
->hw
.wiphy
->bands
[channel
->band
];
460 ht_cap
= &sband
->ht_cap
;
462 if (!ht_cap
->ht_supported
|| channel_type
== NL80211_CHAN_NO_HT
)
465 if (skb_tailroom(skb
) < 2 + sizeof(struct ieee80211_ht_operation
))
468 pos
= skb_put(skb
, 2 + sizeof(struct ieee80211_ht_operation
));
469 ieee80211_ie_build_ht_oper(pos
, ht_cap
, &sdata
->vif
.bss_conf
.chandef
,
470 sdata
->vif
.bss_conf
.ht_operation_mode
);
475 static void ieee80211_mesh_path_timer(unsigned long data
)
477 struct ieee80211_sub_if_data
*sdata
=
478 (struct ieee80211_sub_if_data
*) data
;
480 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
483 static void ieee80211_mesh_path_root_timer(unsigned long data
)
485 struct ieee80211_sub_if_data
*sdata
=
486 (struct ieee80211_sub_if_data
*) data
;
487 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
489 set_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
491 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
494 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh
*ifmsh
)
496 if (ifmsh
->mshcfg
.dot11MeshHWMPRootMode
> IEEE80211_ROOTMODE_ROOT
)
497 set_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
499 clear_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
500 /* stop running timer */
501 del_timer_sync(&ifmsh
->mesh_path_root_timer
);
506 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
507 * @hdr: 802.11 frame header
508 * @fc: frame control field
509 * @meshda: destination address in the mesh
510 * @meshsa: source address address in the mesh. Same as TA, as frame is
511 * locally originated.
513 * Return the length of the 802.11 (does not include a mesh control header)
515 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr
*hdr
, __le16
*fc
,
516 const u8
*meshda
, const u8
*meshsa
)
518 if (is_multicast_ether_addr(meshda
)) {
519 *fc
|= cpu_to_le16(IEEE80211_FCTL_FROMDS
);
521 memcpy(hdr
->addr1
, meshda
, ETH_ALEN
);
522 memcpy(hdr
->addr2
, meshsa
, ETH_ALEN
);
523 memcpy(hdr
->addr3
, meshsa
, ETH_ALEN
);
526 *fc
|= cpu_to_le16(IEEE80211_FCTL_FROMDS
| IEEE80211_FCTL_TODS
);
528 memset(hdr
->addr1
, 0, ETH_ALEN
); /* RA is resolved later */
529 memcpy(hdr
->addr2
, meshsa
, ETH_ALEN
);
530 memcpy(hdr
->addr3
, meshda
, ETH_ALEN
);
531 memcpy(hdr
->addr4
, meshsa
, ETH_ALEN
);
537 * ieee80211_new_mesh_header - create a new mesh header
538 * @sdata: mesh interface to be used
539 * @meshhdr: uninitialized mesh header
540 * @addr4or5: 1st address in the ae header, which may correspond to address 4
541 * (if addr6 is NULL) or address 5 (if addr6 is present). It may
543 * @addr6: 2nd address in the ae header, which corresponds to addr6 of the
546 * Return the header length.
548 int ieee80211_new_mesh_header(struct ieee80211_sub_if_data
*sdata
,
549 struct ieee80211s_hdr
*meshhdr
,
550 const char *addr4or5
, const char *addr6
)
552 if (WARN_ON(!addr4or5
&& addr6
))
555 memset(meshhdr
, 0, sizeof(*meshhdr
));
557 meshhdr
->ttl
= sdata
->u
.mesh
.mshcfg
.dot11MeshTTL
;
559 /* FIXME: racy -- TX on multiple queues can be concurrent */
560 put_unaligned(cpu_to_le32(sdata
->u
.mesh
.mesh_seqnum
), &meshhdr
->seqnum
);
561 sdata
->u
.mesh
.mesh_seqnum
++;
563 if (addr4or5
&& !addr6
) {
564 meshhdr
->flags
|= MESH_FLAGS_AE_A4
;
565 memcpy(meshhdr
->eaddr1
, addr4or5
, ETH_ALEN
);
567 } else if (addr4or5
&& addr6
) {
568 meshhdr
->flags
|= MESH_FLAGS_AE_A5_A6
;
569 memcpy(meshhdr
->eaddr1
, addr4or5
, ETH_ALEN
);
570 memcpy(meshhdr
->eaddr2
, addr6
, ETH_ALEN
);
577 static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data
*sdata
)
579 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
582 ieee80211_sta_expire(sdata
, ifmsh
->mshcfg
.plink_timeout
* HZ
);
583 mesh_path_expire(sdata
);
585 changed
= mesh_accept_plinks_update(sdata
);
586 ieee80211_mbss_info_change_notify(sdata
, changed
);
588 mod_timer(&ifmsh
->housekeeping_timer
,
589 round_jiffies(jiffies
+
590 IEEE80211_MESH_HOUSEKEEPING_INTERVAL
));
593 static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data
*sdata
)
595 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
598 mesh_path_tx_root_frame(sdata
);
600 if (ifmsh
->mshcfg
.dot11MeshHWMPRootMode
== IEEE80211_PROACTIVE_RANN
)
601 interval
= ifmsh
->mshcfg
.dot11MeshHWMPRannInterval
;
603 interval
= ifmsh
->mshcfg
.dot11MeshHWMProotInterval
;
605 mod_timer(&ifmsh
->mesh_path_root_timer
,
606 round_jiffies(TU_TO_EXP_TIME(interval
)));
610 ieee80211_mesh_build_beacon(struct ieee80211_if_mesh
*ifmsh
)
612 struct beacon_data
*bcn
;
613 int head_len
, tail_len
;
615 struct ieee80211_mgmt
*mgmt
;
616 struct ieee80211_chanctx_conf
*chanctx_conf
;
617 struct mesh_csa_settings
*csa
;
618 enum ieee80211_band band
;
620 struct ieee80211_sub_if_data
*sdata
;
621 int hdr_len
= offsetof(struct ieee80211_mgmt
, u
.beacon
) +
622 sizeof(mgmt
->u
.beacon
);
624 sdata
= container_of(ifmsh
, struct ieee80211_sub_if_data
, u
.mesh
);
626 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
627 band
= chanctx_conf
->def
.chan
->band
;
632 /* Channel Switch Announcement */
633 2 + sizeof(struct ieee80211_channel_sw_ie
) +
634 /* Mesh Channel Swith Parameters */
635 2 + sizeof(struct ieee80211_mesh_chansw_params_ie
) +
636 2 + 8 + /* supported rates */
637 2 + 3; /* DS params */
638 tail_len
= 2 + (IEEE80211_MAX_SUPP_RATES
- 8) +
639 2 + sizeof(struct ieee80211_ht_cap
) +
640 2 + sizeof(struct ieee80211_ht_operation
) +
641 2 + ifmsh
->mesh_id_len
+
642 2 + sizeof(struct ieee80211_meshconf_ie
) +
643 2 + sizeof(__le16
) + /* awake window */
646 bcn
= kzalloc(sizeof(*bcn
) + head_len
+ tail_len
, GFP_KERNEL
);
647 /* need an skb for IE builders to operate on */
648 skb
= dev_alloc_skb(max(head_len
, tail_len
));
654 * pointers go into the block we allocated,
655 * memory is | beacon_data | head | tail |
657 bcn
->head
= ((u8
*) bcn
) + sizeof(*bcn
);
659 /* fill in the head */
660 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, hdr_len
);
661 memset(mgmt
, 0, hdr_len
);
662 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
663 IEEE80211_STYPE_BEACON
);
664 eth_broadcast_addr(mgmt
->da
);
665 memcpy(mgmt
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
666 memcpy(mgmt
->bssid
, sdata
->vif
.addr
, ETH_ALEN
);
667 ieee80211_mps_set_frame_flags(sdata
, NULL
, (void *) mgmt
);
668 mgmt
->u
.beacon
.beacon_int
=
669 cpu_to_le16(sdata
->vif
.bss_conf
.beacon_int
);
670 mgmt
->u
.beacon
.capab_info
|= cpu_to_le16(
671 sdata
->u
.mesh
.security
? WLAN_CAPABILITY_PRIVACY
: 0);
673 pos
= skb_put(skb
, 2);
674 *pos
++ = WLAN_EID_SSID
;
678 csa
= rcu_dereference(ifmsh
->csa
);
680 pos
= skb_put(skb
, 13);
682 *pos
++ = WLAN_EID_CHANNEL_SWITCH
;
685 *pos
++ = ieee80211_frequency_to_channel(
686 csa
->settings
.chandef
.chan
->center_freq
);
687 sdata
->csa_counter_offset_beacon
= hdr_len
+ 6;
688 *pos
++ = csa
->settings
.count
;
689 *pos
++ = WLAN_EID_CHAN_SWITCH_PARAM
;
691 if (ifmsh
->chsw_init
) {
692 *pos
++ = ifmsh
->mshcfg
.dot11MeshTTL
;
693 *pos
|= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR
;
695 *pos
++ = ifmsh
->chsw_ttl
;
697 *pos
++ |= csa
->settings
.block_tx
?
698 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT
: 0x00;
699 put_unaligned_le16(WLAN_REASON_MESH_CHAN
, pos
);
701 put_unaligned_le16(ifmsh
->pre_value
, pos
);
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
);
729 bcn
->meshconf
= (struct ieee80211_meshconf_ie
*)
730 (bcn
->tail
+ ifmsh
->meshconf_offset
);
733 rcu_assign_pointer(ifmsh
->beacon
, bcn
);
742 ieee80211_mesh_rebuild_beacon(struct ieee80211_sub_if_data
*sdata
)
744 struct beacon_data
*old_bcn
;
747 old_bcn
= rcu_dereference_protected(sdata
->u
.mesh
.beacon
,
748 lockdep_is_held(&sdata
->wdev
.mtx
));
749 ret
= ieee80211_mesh_build_beacon(&sdata
->u
.mesh
);
751 /* just reuse old beacon */
755 kfree_rcu(old_bcn
, rcu_head
);
759 void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
762 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
763 unsigned long bits
= changed
;
769 /* if we race with running work, worst case this work becomes a noop */
770 for_each_set_bit(bit
, &bits
, sizeof(changed
) * BITS_PER_BYTE
)
771 set_bit(bit
, &ifmsh
->mbss_changed
);
772 set_bit(MESH_WORK_MBSS_CHANGED
, &ifmsh
->wrkq_flags
);
773 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
776 int ieee80211_start_mesh(struct ieee80211_sub_if_data
*sdata
)
778 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
779 struct ieee80211_local
*local
= sdata
->local
;
780 u32 changed
= BSS_CHANGED_BEACON
|
781 BSS_CHANGED_BEACON_ENABLED
|
783 BSS_CHANGED_BASIC_RATES
|
784 BSS_CHANGED_BEACON_INT
;
786 local
->fif_other_bss
++;
787 /* mesh ifaces must set allmulti to forward mcast traffic */
788 atomic_inc(&local
->iff_allmultis
);
789 ieee80211_configure_filter(local
);
791 ifmsh
->mesh_cc_id
= 0; /* Disabled */
792 /* register sync ops from extensible synchronization framework */
793 ifmsh
->sync_ops
= ieee80211_mesh_sync_ops_get(ifmsh
->mesh_sp_id
);
794 ifmsh
->adjusting_tbtt
= false;
795 ifmsh
->sync_offset_clockdrift_max
= 0;
796 set_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
);
797 ieee80211_mesh_root_setup(ifmsh
);
798 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
799 sdata
->vif
.bss_conf
.ht_operation_mode
=
800 ifmsh
->mshcfg
.ht_opmode
;
801 sdata
->vif
.bss_conf
.enable_beacon
= true;
803 changed
|= ieee80211_mps_local_status_update(sdata
);
805 if (ieee80211_mesh_build_beacon(ifmsh
)) {
806 ieee80211_stop_mesh(sdata
);
810 ieee80211_recalc_dtim(local
, sdata
);
811 ieee80211_bss_info_change_notify(sdata
, changed
);
813 netif_carrier_on(sdata
->dev
);
817 void ieee80211_stop_mesh(struct ieee80211_sub_if_data
*sdata
)
819 struct ieee80211_local
*local
= sdata
->local
;
820 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
821 struct beacon_data
*bcn
;
823 netif_carrier_off(sdata
->dev
);
825 /* stop the beacon */
826 ifmsh
->mesh_id_len
= 0;
827 sdata
->vif
.bss_conf
.enable_beacon
= false;
828 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED
, &sdata
->state
);
829 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON_ENABLED
);
830 bcn
= rcu_dereference_protected(ifmsh
->beacon
,
831 lockdep_is_held(&sdata
->wdev
.mtx
));
832 rcu_assign_pointer(ifmsh
->beacon
, NULL
);
833 kfree_rcu(bcn
, rcu_head
);
835 /* flush STAs and mpaths on this iface */
836 sta_info_flush(sdata
);
837 mesh_path_flush_by_iface(sdata
);
839 /* free all potentially still buffered group-addressed frames */
840 local
->total_ps_buffered
-= skb_queue_len(&ifmsh
->ps
.bc_buf
);
841 skb_queue_purge(&ifmsh
->ps
.bc_buf
);
843 del_timer_sync(&sdata
->u
.mesh
.housekeeping_timer
);
844 del_timer_sync(&sdata
->u
.mesh
.mesh_path_root_timer
);
845 del_timer_sync(&sdata
->u
.mesh
.mesh_path_timer
);
847 /* clear any mesh work (for next join) we may have accrued */
848 ifmsh
->wrkq_flags
= 0;
849 ifmsh
->mbss_changed
= 0;
851 local
->fif_other_bss
--;
852 atomic_dec(&local
->iff_allmultis
);
853 ieee80211_configure_filter(local
);
857 ieee80211_mesh_process_chnswitch(struct ieee80211_sub_if_data
*sdata
,
858 struct ieee802_11_elems
*elems
, bool beacon
)
860 struct cfg80211_csa_settings params
;
861 struct ieee80211_csa_ie csa_ie
;
862 struct ieee80211_chanctx_conf
*chanctx_conf
;
863 struct ieee80211_chanctx
*chanctx
;
864 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
865 enum ieee80211_band band
= ieee80211_get_sdata_band(sdata
);
866 int err
, num_chanctx
;
869 if (sdata
->vif
.csa_active
)
875 sta_flags
= IEEE80211_STA_DISABLE_VHT
;
876 switch (sdata
->vif
.bss_conf
.chandef
.width
) {
877 case NL80211_CHAN_WIDTH_20_NOHT
:
878 sta_flags
|= IEEE80211_STA_DISABLE_HT
;
879 case NL80211_CHAN_WIDTH_20
:
880 sta_flags
|= IEEE80211_STA_DISABLE_40MHZ
;
886 memset(¶ms
, 0, sizeof(params
));
887 memset(&csa_ie
, 0, sizeof(csa_ie
));
888 err
= ieee80211_parse_ch_switch_ie(sdata
, elems
, beacon
, band
,
889 sta_flags
, sdata
->vif
.addr
,
896 params
.chandef
= csa_ie
.chandef
;
897 params
.count
= csa_ie
.count
;
899 if (sdata
->vif
.bss_conf
.chandef
.chan
->band
!=
900 params
.chandef
.chan
->band
)
903 if (!cfg80211_chandef_usable(sdata
->local
->hw
.wiphy
, ¶ms
.chandef
,
904 IEEE80211_CHAN_DISABLED
)) {
906 "mesh STA %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), aborting\n",
908 params
.chandef
.chan
->center_freq
,
909 params
.chandef
.width
,
910 params
.chandef
.center_freq1
,
911 params
.chandef
.center_freq2
);
915 err
= cfg80211_chandef_dfs_required(sdata
->local
->hw
.wiphy
,
920 params
.radar_required
= true;
921 /* TODO: DFS not (yet) supported */
926 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
928 goto failed_chswitch
;
930 /* don't handle for multi-VIF cases */
931 chanctx
= container_of(chanctx_conf
, struct ieee80211_chanctx
, conf
);
932 if (chanctx
->refcount
> 1)
933 goto failed_chswitch
;
936 list_for_each_entry_rcu(chanctx
, &sdata
->local
->chanctx_list
, list
)
940 goto failed_chswitch
;
945 "received channel switch announcement to go to channel %d MHz\n",
946 params
.chandef
.chan
->center_freq
);
948 params
.block_tx
= csa_ie
.mode
& WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT
;
950 ifmsh
->chsw_ttl
= csa_ie
.ttl
- 1;
951 if (ifmsh
->pre_value
>= csa_ie
.pre_value
)
953 ifmsh
->pre_value
= csa_ie
.pre_value
;
956 if (ifmsh
->chsw_ttl
< ifmsh
->mshcfg
.dot11MeshTTL
) {
957 if (ieee80211_mesh_csa_beacon(sdata
, ¶ms
, false) < 0)
963 sdata
->csa_radar_required
= params
.radar_required
;
966 ieee80211_stop_queues_by_reason(&sdata
->local
->hw
,
967 IEEE80211_MAX_QUEUE_MAP
,
968 IEEE80211_QUEUE_STOP_REASON_CSA
);
970 sdata
->csa_chandef
= params
.chandef
;
971 sdata
->vif
.csa_active
= true;
973 ieee80211_bss_info_change_notify(sdata
, err
);
974 drv_channel_switch_beacon(sdata
, ¶ms
.chandef
);
983 ieee80211_mesh_rx_probe_req(struct ieee80211_sub_if_data
*sdata
,
984 struct ieee80211_mgmt
*mgmt
, size_t len
)
986 struct ieee80211_local
*local
= sdata
->local
;
987 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
988 struct sk_buff
*presp
;
989 struct beacon_data
*bcn
;
990 struct ieee80211_mgmt
*hdr
;
991 struct ieee802_11_elems elems
;
995 pos
= mgmt
->u
.probe_req
.variable
;
996 baselen
= (u8
*) pos
- (u8
*) mgmt
;
1000 ieee802_11_parse_elems(pos
, len
- baselen
, false, &elems
);
1005 /* 802.11-2012 10.1.4.3.2 */
1006 if ((!ether_addr_equal(mgmt
->da
, sdata
->vif
.addr
) &&
1007 !is_broadcast_ether_addr(mgmt
->da
)) ||
1008 elems
.ssid_len
!= 0)
1011 if (elems
.mesh_id_len
!= 0 &&
1012 (elems
.mesh_id_len
!= ifmsh
->mesh_id_len
||
1013 memcmp(elems
.mesh_id
, ifmsh
->mesh_id
, ifmsh
->mesh_id_len
)))
1017 bcn
= rcu_dereference(ifmsh
->beacon
);
1022 presp
= dev_alloc_skb(local
->tx_headroom
+
1023 bcn
->head_len
+ bcn
->tail_len
);
1027 skb_reserve(presp
, local
->tx_headroom
);
1028 memcpy(skb_put(presp
, bcn
->head_len
), bcn
->head
, bcn
->head_len
);
1029 memcpy(skb_put(presp
, bcn
->tail_len
), bcn
->tail
, bcn
->tail_len
);
1030 hdr
= (struct ieee80211_mgmt
*) presp
->data
;
1031 hdr
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
1032 IEEE80211_STYPE_PROBE_RESP
);
1033 memcpy(hdr
->da
, mgmt
->sa
, ETH_ALEN
);
1034 IEEE80211_SKB_CB(presp
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
1035 ieee80211_tx_skb(sdata
, presp
);
1040 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data
*sdata
,
1042 struct ieee80211_mgmt
*mgmt
,
1044 struct ieee80211_rx_status
*rx_status
)
1046 struct ieee80211_local
*local
= sdata
->local
;
1047 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1048 struct ieee802_11_elems elems
;
1049 struct ieee80211_channel
*channel
;
1052 enum ieee80211_band band
= rx_status
->band
;
1054 /* ignore ProbeResp to foreign address */
1055 if (stype
== IEEE80211_STYPE_PROBE_RESP
&&
1056 !ether_addr_equal(mgmt
->da
, sdata
->vif
.addr
))
1059 baselen
= (u8
*) mgmt
->u
.probe_resp
.variable
- (u8
*) mgmt
;
1063 ieee802_11_parse_elems(mgmt
->u
.probe_resp
.variable
, len
- baselen
,
1066 /* ignore non-mesh or secure / unsecure mismatch */
1067 if ((!elems
.mesh_id
|| !elems
.mesh_config
) ||
1068 (elems
.rsn
&& sdata
->u
.mesh
.security
== IEEE80211_MESH_SEC_NONE
) ||
1069 (!elems
.rsn
&& sdata
->u
.mesh
.security
!= IEEE80211_MESH_SEC_NONE
))
1072 if (elems
.ds_params
)
1073 freq
= ieee80211_channel_to_frequency(elems
.ds_params
[0], band
);
1075 freq
= rx_status
->freq
;
1077 channel
= ieee80211_get_channel(local
->hw
.wiphy
, freq
);
1079 if (!channel
|| channel
->flags
& IEEE80211_CHAN_DISABLED
)
1082 if (mesh_matches_local(sdata
, &elems
))
1083 mesh_neighbour_update(sdata
, mgmt
->sa
, &elems
);
1085 if (ifmsh
->sync_ops
)
1086 ifmsh
->sync_ops
->rx_bcn_presp(sdata
,
1087 stype
, mgmt
, &elems
, rx_status
);
1089 if (!ifmsh
->chsw_init
)
1090 ieee80211_mesh_process_chnswitch(sdata
, &elems
, true);
1093 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data
*sdata
)
1095 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1096 struct mesh_csa_settings
*tmp_csa_settings
;
1099 /* Reset the TTL value and Initiator flag */
1100 ifmsh
->chsw_init
= false;
1101 ifmsh
->chsw_ttl
= 0;
1103 /* Remove the CSA and MCSP elements from the beacon */
1104 tmp_csa_settings
= rcu_dereference(ifmsh
->csa
);
1105 rcu_assign_pointer(ifmsh
->csa
, NULL
);
1106 kfree_rcu(tmp_csa_settings
, rcu_head
);
1107 ret
= ieee80211_mesh_rebuild_beacon(sdata
);
1111 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON
);
1113 mcsa_dbg(sdata
, "complete switching to center freq %d MHz",
1114 sdata
->vif
.bss_conf
.chandef
.chan
->center_freq
);
1118 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data
*sdata
,
1119 struct cfg80211_csa_settings
*csa_settings
,
1122 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1123 struct mesh_csa_settings
*tmp_csa_settings
;
1126 tmp_csa_settings
= kmalloc(sizeof(*tmp_csa_settings
),
1128 if (!tmp_csa_settings
)
1131 memcpy(&tmp_csa_settings
->settings
, csa_settings
,
1132 sizeof(struct cfg80211_csa_settings
));
1134 rcu_assign_pointer(ifmsh
->csa
, tmp_csa_settings
);
1136 ret
= ieee80211_mesh_rebuild_beacon(sdata
);
1138 tmp_csa_settings
= rcu_dereference(ifmsh
->csa
);
1139 rcu_assign_pointer(ifmsh
->csa
, NULL
);
1140 kfree_rcu(tmp_csa_settings
, rcu_head
);
1144 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON
);
1147 ieee80211_send_action_csa(sdata
, csa_settings
);
1152 static int mesh_fwd_csa_frame(struct ieee80211_sub_if_data
*sdata
,
1153 struct ieee80211_mgmt
*mgmt
, size_t len
)
1155 struct ieee80211_mgmt
*mgmt_fwd
;
1156 struct sk_buff
*skb
;
1157 struct ieee80211_local
*local
= sdata
->local
;
1158 u8
*pos
= mgmt
->u
.action
.u
.chan_switch
.variable
;
1161 skb
= dev_alloc_skb(local
->tx_headroom
+ len
);
1164 skb_reserve(skb
, local
->tx_headroom
);
1165 mgmt_fwd
= (struct ieee80211_mgmt
*) skb_put(skb
, len
);
1167 /* offset_ttl is based on whether the secondary channel
1168 * offset is available or not. Substract 1 from the mesh TTL
1169 * and disable the initiator flag before forwarding.
1171 offset_ttl
= (len
< 42) ? 7 : 10;
1172 *(pos
+ offset_ttl
) -= 1;
1173 *(pos
+ offset_ttl
+ 1) &= ~WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR
;
1175 memcpy(mgmt_fwd
, mgmt
, len
);
1176 eth_broadcast_addr(mgmt_fwd
->da
);
1177 memcpy(mgmt_fwd
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
1178 memcpy(mgmt_fwd
->bssid
, sdata
->vif
.addr
, ETH_ALEN
);
1180 ieee80211_tx_skb(sdata
, skb
);
1184 static void mesh_rx_csa_frame(struct ieee80211_sub_if_data
*sdata
,
1185 struct ieee80211_mgmt
*mgmt
, size_t len
)
1187 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1188 struct ieee802_11_elems elems
;
1190 bool fwd_csa
= true;
1194 if (mgmt
->u
.action
.u
.measurement
.action_code
!=
1195 WLAN_ACTION_SPCT_CHL_SWITCH
)
1198 pos
= mgmt
->u
.action
.u
.chan_switch
.variable
;
1199 baselen
= offsetof(struct ieee80211_mgmt
,
1200 u
.action
.u
.chan_switch
.variable
);
1201 ieee802_11_parse_elems(pos
, len
- baselen
, false, &elems
);
1203 ifmsh
->chsw_ttl
= elems
.mesh_chansw_params_ie
->mesh_ttl
;
1204 if (!--ifmsh
->chsw_ttl
)
1207 pre_value
= le16_to_cpu(elems
.mesh_chansw_params_ie
->mesh_pre_value
);
1208 if (ifmsh
->pre_value
>= pre_value
)
1211 ifmsh
->pre_value
= pre_value
;
1213 if (!ieee80211_mesh_process_chnswitch(sdata
, &elems
, false)) {
1214 mcsa_dbg(sdata
, "Failed to process CSA action frame");
1218 /* forward or re-broadcast the CSA frame */
1220 if (mesh_fwd_csa_frame(sdata
, mgmt
, len
) < 0)
1221 mcsa_dbg(sdata
, "Failed to forward the CSA frame");
1225 static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data
*sdata
,
1226 struct ieee80211_mgmt
*mgmt
,
1228 struct ieee80211_rx_status
*rx_status
)
1230 switch (mgmt
->u
.action
.category
) {
1231 case WLAN_CATEGORY_SELF_PROTECTED
:
1232 switch (mgmt
->u
.action
.u
.self_prot
.action_code
) {
1233 case WLAN_SP_MESH_PEERING_OPEN
:
1234 case WLAN_SP_MESH_PEERING_CLOSE
:
1235 case WLAN_SP_MESH_PEERING_CONFIRM
:
1236 mesh_rx_plink_frame(sdata
, mgmt
, len
, rx_status
);
1240 case WLAN_CATEGORY_MESH_ACTION
:
1241 if (mesh_action_is_path_sel(mgmt
))
1242 mesh_rx_path_sel_frame(sdata
, mgmt
, len
);
1244 case WLAN_CATEGORY_SPECTRUM_MGMT
:
1245 mesh_rx_csa_frame(sdata
, mgmt
, len
);
1250 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1251 struct sk_buff
*skb
)
1253 struct ieee80211_rx_status
*rx_status
;
1254 struct ieee80211_mgmt
*mgmt
;
1259 /* mesh already went down */
1260 if (!sdata
->wdev
.mesh_id_len
)
1263 rx_status
= IEEE80211_SKB_RXCB(skb
);
1264 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1265 stype
= le16_to_cpu(mgmt
->frame_control
) & IEEE80211_FCTL_STYPE
;
1268 case IEEE80211_STYPE_PROBE_RESP
:
1269 case IEEE80211_STYPE_BEACON
:
1270 ieee80211_mesh_rx_bcn_presp(sdata
, stype
, mgmt
, skb
->len
,
1273 case IEEE80211_STYPE_PROBE_REQ
:
1274 ieee80211_mesh_rx_probe_req(sdata
, mgmt
, skb
->len
);
1276 case IEEE80211_STYPE_ACTION
:
1277 ieee80211_mesh_rx_mgmt_action(sdata
, mgmt
, skb
->len
, rx_status
);
1281 sdata_unlock(sdata
);
1284 static void mesh_bss_info_changed(struct ieee80211_sub_if_data
*sdata
)
1286 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1287 u32 bit
, changed
= 0;
1289 for_each_set_bit(bit
, &ifmsh
->mbss_changed
,
1290 sizeof(changed
) * BITS_PER_BYTE
) {
1291 clear_bit(bit
, &ifmsh
->mbss_changed
);
1292 changed
|= BIT(bit
);
1295 if (sdata
->vif
.bss_conf
.enable_beacon
&&
1296 (changed
& (BSS_CHANGED_BEACON
|
1298 BSS_CHANGED_BASIC_RATES
|
1299 BSS_CHANGED_BEACON_INT
)))
1300 if (ieee80211_mesh_rebuild_beacon(sdata
))
1303 ieee80211_bss_info_change_notify(sdata
, changed
);
1306 void ieee80211_mesh_work(struct ieee80211_sub_if_data
*sdata
)
1308 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1312 /* mesh already went down */
1313 if (!sdata
->wdev
.mesh_id_len
)
1316 if (ifmsh
->preq_queue_len
&&
1318 ifmsh
->last_preq
+ msecs_to_jiffies(ifmsh
->mshcfg
.dot11MeshHWMPpreqMinInterval
)))
1319 mesh_path_start_discovery(sdata
);
1321 if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE
, &ifmsh
->wrkq_flags
))
1322 mesh_mpath_table_grow();
1324 if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE
, &ifmsh
->wrkq_flags
))
1325 mesh_mpp_table_grow();
1327 if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
))
1328 ieee80211_mesh_housekeeping(sdata
);
1330 if (test_and_clear_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
))
1331 ieee80211_mesh_rootpath(sdata
);
1333 if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST
, &ifmsh
->wrkq_flags
))
1334 mesh_sync_adjust_tbtt(sdata
);
1336 if (test_and_clear_bit(MESH_WORK_MBSS_CHANGED
, &ifmsh
->wrkq_flags
))
1337 mesh_bss_info_changed(sdata
);
1339 sdata_unlock(sdata
);
1342 void ieee80211_mesh_notify_scan_completed(struct ieee80211_local
*local
)
1344 struct ieee80211_sub_if_data
*sdata
;
1347 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
)
1348 if (ieee80211_vif_is_mesh(&sdata
->vif
) &&
1349 ieee80211_sdata_running(sdata
))
1350 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
1354 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data
*sdata
)
1356 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1357 static u8 zero_addr
[ETH_ALEN
] = {};
1359 setup_timer(&ifmsh
->housekeeping_timer
,
1360 ieee80211_mesh_housekeeping_timer
,
1361 (unsigned long) sdata
);
1363 ifmsh
->accepting_plinks
= true;
1364 atomic_set(&ifmsh
->mpaths
, 0);
1365 mesh_rmc_init(sdata
);
1366 ifmsh
->last_preq
= jiffies
;
1367 ifmsh
->next_perr
= jiffies
;
1368 ifmsh
->chsw_init
= false;
1369 /* Allocate all mesh structures when creating the first mesh interface. */
1370 if (!mesh_allocated
)
1372 setup_timer(&ifmsh
->mesh_path_timer
,
1373 ieee80211_mesh_path_timer
,
1374 (unsigned long) sdata
);
1375 setup_timer(&ifmsh
->mesh_path_root_timer
,
1376 ieee80211_mesh_path_root_timer
,
1377 (unsigned long) sdata
);
1378 INIT_LIST_HEAD(&ifmsh
->preq_queue
.list
);
1379 skb_queue_head_init(&ifmsh
->ps
.bc_buf
);
1380 spin_lock_init(&ifmsh
->mesh_preq_queue_lock
);
1381 spin_lock_init(&ifmsh
->sync_offset_lock
);
1382 RCU_INIT_POINTER(ifmsh
->beacon
, NULL
);
1384 sdata
->vif
.bss_conf
.bssid
= zero_addr
;