2 * Copyright (c) 2008, 2009 open80211s Ltd.
3 * Authors: Luis Carlos Cobo <luisca@cozybit.com>
4 * Javier Cardona <javier@cozybit.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <linux/slab.h>
12 #include <asm/unaligned.h>
13 #include "ieee80211_i.h"
16 #define TMR_RUNNING_HK 0
17 #define TMR_RUNNING_MP 1
18 #define TMR_RUNNING_MPR 2
21 static struct kmem_cache
*rm_cache
;
23 #ifdef CONFIG_MAC80211_MESH
24 bool mesh_action_is_path_sel(struct ieee80211_mgmt
*mgmt
)
26 return (mgmt
->u
.action
.u
.mesh_action
.action_code
==
27 WLAN_MESH_ACTION_HWMP_PATH_SELECTION
);
30 bool mesh_action_is_path_sel(struct ieee80211_mgmt
*mgmt
)
34 void ieee80211s_init(void)
38 rm_cache
= kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry
),
42 void ieee80211s_stop(void)
44 mesh_pathtbl_unregister();
45 kmem_cache_destroy(rm_cache
);
48 static void ieee80211_mesh_housekeeping_timer(unsigned long data
)
50 struct ieee80211_sub_if_data
*sdata
= (void *) data
;
51 struct ieee80211_local
*local
= sdata
->local
;
52 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
54 set_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
);
56 if (local
->quiescing
) {
57 set_bit(TMR_RUNNING_HK
, &ifmsh
->timers_running
);
61 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
65 * mesh_matches_local - check if the config of a mesh point matches ours
67 * @sdata: local mesh subif
68 * @ie: information elements of a management frame from the mesh peer
70 * This function checks if the mesh configuration of a mesh point matches the
71 * local mesh configuration, i.e. if both nodes belong to the same mesh network.
73 bool mesh_matches_local(struct ieee80211_sub_if_data
*sdata
,
74 struct ieee802_11_elems
*ie
)
76 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
77 struct ieee80211_local
*local
= sdata
->local
;
79 enum nl80211_channel_type sta_channel_type
= NL80211_CHAN_NO_HT
;
82 * As support for each feature is added, check for matching
83 * - On mesh config capabilities
84 * - Power Save Support En
85 * - Sync support enabled
86 * - Sync support active
87 * - Sync support required from peer
89 * - Power management control on fc
91 if (!(ifmsh
->mesh_id_len
== ie
->mesh_id_len
&&
92 memcmp(ifmsh
->mesh_id
, ie
->mesh_id
, ie
->mesh_id_len
) == 0 &&
93 (ifmsh
->mesh_pp_id
== ie
->mesh_config
->meshconf_psel
) &&
94 (ifmsh
->mesh_pm_id
== ie
->mesh_config
->meshconf_pmetric
) &&
95 (ifmsh
->mesh_cc_id
== ie
->mesh_config
->meshconf_congest
) &&
96 (ifmsh
->mesh_sp_id
== ie
->mesh_config
->meshconf_synch
) &&
97 (ifmsh
->mesh_auth_id
== ie
->mesh_config
->meshconf_auth
)))
100 ieee80211_sta_get_rates(local
, ie
, local
->oper_channel
->band
,
103 if (sdata
->vif
.bss_conf
.basic_rates
!= basic_rates
)
106 if (ie
->ht_operation
)
108 ieee80211_ht_oper_to_channel_type(ie
->ht_operation
);
110 /* Disallow HT40+/- mismatch */
111 if (ie
->ht_operation
&&
112 local
->_oper_channel_type
> NL80211_CHAN_HT20
&&
113 sta_channel_type
> NL80211_CHAN_HT20
&&
114 local
->_oper_channel_type
!= sta_channel_type
)
123 * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
125 * @ie: information elements of a management frame from the mesh peer
127 bool mesh_peer_accepts_plinks(struct ieee802_11_elems
*ie
)
129 return (ie
->mesh_config
->meshconf_cap
&
130 MESHCONF_CAPAB_ACCEPT_PLINKS
) != 0;
134 * mesh_accept_plinks_update: update accepting_plink in local mesh beacons
136 * @sdata: mesh interface in which mesh beacons are going to be updated
138 void mesh_accept_plinks_update(struct ieee80211_sub_if_data
*sdata
)
142 /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
143 * the mesh interface might be able to establish plinks with peers that
144 * are already on the table but are not on PLINK_ESTAB state. However,
145 * in general the mesh interface is not accepting peer link requests
146 * from new peers, and that must be reflected in the beacon
148 free_plinks
= mesh_plink_availables(sdata
);
150 if (free_plinks
!= sdata
->u
.mesh
.accepting_plinks
)
151 ieee80211_mesh_housekeeping_timer((unsigned long) sdata
);
154 int mesh_rmc_init(struct ieee80211_sub_if_data
*sdata
)
158 sdata
->u
.mesh
.rmc
= kmalloc(sizeof(struct mesh_rmc
), GFP_KERNEL
);
159 if (!sdata
->u
.mesh
.rmc
)
161 sdata
->u
.mesh
.rmc
->idx_mask
= RMC_BUCKETS
- 1;
162 for (i
= 0; i
< RMC_BUCKETS
; i
++)
163 INIT_LIST_HEAD(&sdata
->u
.mesh
.rmc
->bucket
[i
].list
);
167 void mesh_rmc_free(struct ieee80211_sub_if_data
*sdata
)
169 struct mesh_rmc
*rmc
= sdata
->u
.mesh
.rmc
;
170 struct rmc_entry
*p
, *n
;
173 if (!sdata
->u
.mesh
.rmc
)
176 for (i
= 0; i
< RMC_BUCKETS
; i
++)
177 list_for_each_entry_safe(p
, n
, &rmc
->bucket
[i
].list
, list
) {
179 kmem_cache_free(rm_cache
, p
);
183 sdata
->u
.mesh
.rmc
= NULL
;
187 * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
189 * @sa: source address
190 * @mesh_hdr: mesh_header
192 * Returns: 0 if the frame is not in the cache, nonzero otherwise.
194 * Checks using the source address and the mesh sequence number if we have
195 * received this frame lately. If the frame is not in the cache, it is added to
198 int mesh_rmc_check(u8
*sa
, struct ieee80211s_hdr
*mesh_hdr
,
199 struct ieee80211_sub_if_data
*sdata
)
201 struct mesh_rmc
*rmc
= sdata
->u
.mesh
.rmc
;
205 struct rmc_entry
*p
, *n
;
207 /* Don't care about endianness since only match matters */
208 memcpy(&seqnum
, &mesh_hdr
->seqnum
, sizeof(mesh_hdr
->seqnum
));
209 idx
= le32_to_cpu(mesh_hdr
->seqnum
) & rmc
->idx_mask
;
210 list_for_each_entry_safe(p
, n
, &rmc
->bucket
[idx
].list
, list
) {
212 if (time_after(jiffies
, p
->exp_time
) ||
213 (entries
== RMC_QUEUE_MAX_LEN
)) {
215 kmem_cache_free(rm_cache
, p
);
217 } else if ((seqnum
== p
->seqnum
) &&
218 (ether_addr_equal(sa
, p
->sa
)))
222 p
= kmem_cache_alloc(rm_cache
, GFP_ATOMIC
);
227 p
->exp_time
= jiffies
+ RMC_TIMEOUT
;
228 memcpy(p
->sa
, sa
, ETH_ALEN
);
229 list_add(&p
->list
, &rmc
->bucket
[idx
].list
);
234 mesh_add_meshconf_ie(struct sk_buff
*skb
, struct ieee80211_sub_if_data
*sdata
)
236 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
238 u8 meshconf_len
= sizeof(struct ieee80211_meshconf_ie
);
240 if (skb_tailroom(skb
) < 2 + meshconf_len
)
243 pos
= skb_put(skb
, 2 + meshconf_len
);
244 *pos
++ = WLAN_EID_MESH_CONFIG
;
245 *pos
++ = meshconf_len
;
247 /* Active path selection protocol ID */
248 *pos
++ = ifmsh
->mesh_pp_id
;
249 /* Active path selection metric ID */
250 *pos
++ = ifmsh
->mesh_pm_id
;
251 /* Congestion control mode identifier */
252 *pos
++ = ifmsh
->mesh_cc_id
;
253 /* Synchronization protocol identifier */
254 *pos
++ = ifmsh
->mesh_sp_id
;
255 /* Authentication Protocol identifier */
256 *pos
++ = ifmsh
->mesh_auth_id
;
257 /* Mesh Formation Info - number of neighbors */
258 neighbors
= atomic_read(&ifmsh
->mshstats
.estab_plinks
);
259 /* Number of neighbor mesh STAs or 15 whichever is smaller */
260 neighbors
= (neighbors
> 15) ? 15 : neighbors
;
261 *pos
++ = neighbors
<< 1;
262 /* Mesh capability */
263 ifmsh
->accepting_plinks
= mesh_plink_availables(sdata
);
264 *pos
= MESHCONF_CAPAB_FORWARDING
;
265 *pos
|= ifmsh
->accepting_plinks
?
266 MESHCONF_CAPAB_ACCEPT_PLINKS
: 0x00;
267 *pos
++ |= ifmsh
->adjusting_tbtt
?
268 MESHCONF_CAPAB_TBTT_ADJUSTING
: 0x00;
275 mesh_add_meshid_ie(struct sk_buff
*skb
, struct ieee80211_sub_if_data
*sdata
)
277 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
280 if (skb_tailroom(skb
) < 2 + ifmsh
->mesh_id_len
)
283 pos
= skb_put(skb
, 2 + ifmsh
->mesh_id_len
);
284 *pos
++ = WLAN_EID_MESH_ID
;
285 *pos
++ = ifmsh
->mesh_id_len
;
286 if (ifmsh
->mesh_id_len
)
287 memcpy(pos
, ifmsh
->mesh_id
, ifmsh
->mesh_id_len
);
293 mesh_add_vendor_ies(struct sk_buff
*skb
, struct ieee80211_sub_if_data
*sdata
)
295 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
299 if (!ifmsh
->ie
|| !ifmsh
->ie_len
)
302 /* fast-forward to vendor IEs */
303 offset
= ieee80211_ie_split_vendor(ifmsh
->ie
, ifmsh
->ie_len
, 0);
306 len
= ifmsh
->ie_len
- offset
;
307 data
= ifmsh
->ie
+ offset
;
308 if (skb_tailroom(skb
) < len
)
310 memcpy(skb_put(skb
, len
), data
, len
);
317 mesh_add_rsn_ie(struct sk_buff
*skb
, struct ieee80211_sub_if_data
*sdata
)
319 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
323 if (!ifmsh
->ie
|| !ifmsh
->ie_len
)
328 while (data
< ifmsh
->ie
+ ifmsh
->ie_len
) {
329 if (*data
== WLAN_EID_RSN
) {
337 if (skb_tailroom(skb
) < len
)
339 memcpy(skb_put(skb
, len
), data
, len
);
345 int mesh_add_ds_params_ie(struct sk_buff
*skb
,
346 struct ieee80211_sub_if_data
*sdata
)
348 struct ieee80211_local
*local
= sdata
->local
;
349 struct ieee80211_supported_band
*sband
;
352 if (skb_tailroom(skb
) < 3)
355 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
356 if (sband
->band
== IEEE80211_BAND_2GHZ
) {
357 pos
= skb_put(skb
, 2 + 1);
358 *pos
++ = WLAN_EID_DS_PARAMS
;
360 *pos
++ = ieee80211_frequency_to_channel(local
->hw
.conf
.channel
->center_freq
);
366 int mesh_add_ht_cap_ie(struct sk_buff
*skb
,
367 struct ieee80211_sub_if_data
*sdata
)
369 struct ieee80211_local
*local
= sdata
->local
;
370 struct ieee80211_supported_band
*sband
;
373 sband
= local
->hw
.wiphy
->bands
[local
->oper_channel
->band
];
374 if (!sband
->ht_cap
.ht_supported
||
375 local
->_oper_channel_type
== NL80211_CHAN_NO_HT
)
378 if (skb_tailroom(skb
) < 2 + sizeof(struct ieee80211_ht_cap
))
381 pos
= skb_put(skb
, 2 + sizeof(struct ieee80211_ht_cap
));
382 ieee80211_ie_build_ht_cap(pos
, &sband
->ht_cap
, sband
->ht_cap
.cap
);
387 int mesh_add_ht_oper_ie(struct sk_buff
*skb
,
388 struct ieee80211_sub_if_data
*sdata
)
390 struct ieee80211_local
*local
= sdata
->local
;
391 struct ieee80211_channel
*channel
= local
->oper_channel
;
392 enum nl80211_channel_type channel_type
= local
->_oper_channel_type
;
393 struct ieee80211_supported_band
*sband
=
394 local
->hw
.wiphy
->bands
[channel
->band
];
395 struct ieee80211_sta_ht_cap
*ht_cap
= &sband
->ht_cap
;
398 if (!ht_cap
->ht_supported
|| channel_type
== NL80211_CHAN_NO_HT
)
401 if (skb_tailroom(skb
) < 2 + sizeof(struct ieee80211_ht_operation
))
404 pos
= skb_put(skb
, 2 + sizeof(struct ieee80211_ht_operation
));
405 ieee80211_ie_build_ht_oper(pos
, ht_cap
, channel
, channel_type
,
406 sdata
->vif
.bss_conf
.ht_operation_mode
);
410 static void ieee80211_mesh_path_timer(unsigned long data
)
412 struct ieee80211_sub_if_data
*sdata
=
413 (struct ieee80211_sub_if_data
*) data
;
414 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
415 struct ieee80211_local
*local
= sdata
->local
;
417 if (local
->quiescing
) {
418 set_bit(TMR_RUNNING_MP
, &ifmsh
->timers_running
);
422 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
425 static void ieee80211_mesh_path_root_timer(unsigned long data
)
427 struct ieee80211_sub_if_data
*sdata
=
428 (struct ieee80211_sub_if_data
*) data
;
429 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
430 struct ieee80211_local
*local
= sdata
->local
;
432 set_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
434 if (local
->quiescing
) {
435 set_bit(TMR_RUNNING_MPR
, &ifmsh
->timers_running
);
439 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
442 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh
*ifmsh
)
444 if (ifmsh
->mshcfg
.dot11MeshHWMPRootMode
)
445 set_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
447 clear_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
448 /* stop running timer */
449 del_timer_sync(&ifmsh
->mesh_path_root_timer
);
454 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
455 * @hdr: 802.11 frame header
456 * @fc: frame control field
457 * @meshda: destination address in the mesh
458 * @meshsa: source address address in the mesh. Same as TA, as frame is
459 * locally originated.
461 * Return the length of the 802.11 (does not include a mesh control header)
463 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr
*hdr
, __le16
*fc
,
464 const u8
*meshda
, const u8
*meshsa
)
466 if (is_multicast_ether_addr(meshda
)) {
467 *fc
|= cpu_to_le16(IEEE80211_FCTL_FROMDS
);
469 memcpy(hdr
->addr1
, meshda
, ETH_ALEN
);
470 memcpy(hdr
->addr2
, meshsa
, ETH_ALEN
);
471 memcpy(hdr
->addr3
, meshsa
, ETH_ALEN
);
474 *fc
|= cpu_to_le16(IEEE80211_FCTL_FROMDS
| IEEE80211_FCTL_TODS
);
476 memset(hdr
->addr1
, 0, ETH_ALEN
); /* RA is resolved later */
477 memcpy(hdr
->addr2
, meshsa
, ETH_ALEN
);
478 memcpy(hdr
->addr3
, meshda
, ETH_ALEN
);
479 memcpy(hdr
->addr4
, meshsa
, ETH_ALEN
);
485 * ieee80211_new_mesh_header - create a new mesh header
486 * @meshhdr: uninitialized mesh header
487 * @sdata: mesh interface to be used
488 * @addr4or5: 1st address in the ae header, which may correspond to address 4
489 * (if addr6 is NULL) or address 5 (if addr6 is present). It may
491 * @addr6: 2nd address in the ae header, which corresponds to addr6 of the
494 * Return the header length.
496 int ieee80211_new_mesh_header(struct ieee80211s_hdr
*meshhdr
,
497 struct ieee80211_sub_if_data
*sdata
, char *addr4or5
,
501 BUG_ON(!addr4or5
&& addr6
);
502 memset(meshhdr
, 0, sizeof(*meshhdr
));
503 meshhdr
->ttl
= sdata
->u
.mesh
.mshcfg
.dot11MeshTTL
;
504 put_unaligned(cpu_to_le32(sdata
->u
.mesh
.mesh_seqnum
), &meshhdr
->seqnum
);
505 sdata
->u
.mesh
.mesh_seqnum
++;
506 if (addr4or5
&& !addr6
) {
507 meshhdr
->flags
|= MESH_FLAGS_AE_A4
;
509 memcpy(meshhdr
->eaddr1
, addr4or5
, ETH_ALEN
);
510 } else if (addr4or5
&& addr6
) {
511 meshhdr
->flags
|= MESH_FLAGS_AE_A5_A6
;
512 aelen
+= 2 * ETH_ALEN
;
513 memcpy(meshhdr
->eaddr1
, addr4or5
, ETH_ALEN
);
514 memcpy(meshhdr
->eaddr2
, addr6
, ETH_ALEN
);
519 static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data
*sdata
,
520 struct ieee80211_if_mesh
*ifmsh
)
524 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
525 printk(KERN_DEBUG
"%s: running mesh housekeeping\n",
529 ieee80211_sta_expire(sdata
, IEEE80211_MESH_PEER_INACTIVITY_LIMIT
);
530 mesh_path_expire(sdata
);
532 free_plinks
= mesh_plink_availables(sdata
);
533 if (free_plinks
!= sdata
->u
.mesh
.accepting_plinks
)
534 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON
);
536 mod_timer(&ifmsh
->housekeeping_timer
,
537 round_jiffies(jiffies
+ IEEE80211_MESH_HOUSEKEEPING_INTERVAL
));
540 static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data
*sdata
)
542 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
544 mesh_path_tx_root_frame(sdata
);
545 mod_timer(&ifmsh
->mesh_path_root_timer
,
546 round_jiffies(TU_TO_EXP_TIME(
547 ifmsh
->mshcfg
.dot11MeshHWMPRannInterval
)));
551 void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data
*sdata
)
553 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
555 /* use atomic bitops in case all timers fire at the same time */
557 if (del_timer_sync(&ifmsh
->housekeeping_timer
))
558 set_bit(TMR_RUNNING_HK
, &ifmsh
->timers_running
);
559 if (del_timer_sync(&ifmsh
->mesh_path_timer
))
560 set_bit(TMR_RUNNING_MP
, &ifmsh
->timers_running
);
561 if (del_timer_sync(&ifmsh
->mesh_path_root_timer
))
562 set_bit(TMR_RUNNING_MPR
, &ifmsh
->timers_running
);
565 void ieee80211_mesh_restart(struct ieee80211_sub_if_data
*sdata
)
567 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
569 if (test_and_clear_bit(TMR_RUNNING_HK
, &ifmsh
->timers_running
))
570 add_timer(&ifmsh
->housekeeping_timer
);
571 if (test_and_clear_bit(TMR_RUNNING_MP
, &ifmsh
->timers_running
))
572 add_timer(&ifmsh
->mesh_path_timer
);
573 if (test_and_clear_bit(TMR_RUNNING_MPR
, &ifmsh
->timers_running
))
574 add_timer(&ifmsh
->mesh_path_root_timer
);
575 ieee80211_mesh_root_setup(ifmsh
);
579 void ieee80211_start_mesh(struct ieee80211_sub_if_data
*sdata
)
581 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
582 struct ieee80211_local
*local
= sdata
->local
;
584 local
->fif_other_bss
++;
585 /* mesh ifaces must set allmulti to forward mcast traffic */
586 atomic_inc(&local
->iff_allmultis
);
587 ieee80211_configure_filter(local
);
589 ifmsh
->mesh_cc_id
= 0; /* Disabled */
590 ifmsh
->mesh_auth_id
= 0; /* Disabled */
591 /* register sync ops from extensible synchronization framework */
592 ifmsh
->sync_ops
= ieee80211_mesh_sync_ops_get(ifmsh
->mesh_sp_id
);
593 ifmsh
->adjusting_tbtt
= false;
594 ifmsh
->sync_offset_clockdrift_max
= 0;
595 set_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
);
596 ieee80211_mesh_root_setup(ifmsh
);
597 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
598 sdata
->vif
.bss_conf
.ht_operation_mode
=
599 ifmsh
->mshcfg
.ht_opmode
;
600 sdata
->vif
.bss_conf
.beacon_int
= MESH_DEFAULT_BEACON_INTERVAL
;
601 sdata
->vif
.bss_conf
.basic_rates
=
602 ieee80211_mandatory_rates(sdata
->local
,
603 sdata
->local
->hw
.conf
.channel
->band
);
604 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON
|
605 BSS_CHANGED_BEACON_ENABLED
|
607 BSS_CHANGED_BASIC_RATES
|
608 BSS_CHANGED_BEACON_INT
);
611 void ieee80211_stop_mesh(struct ieee80211_sub_if_data
*sdata
)
613 struct ieee80211_local
*local
= sdata
->local
;
614 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
616 ifmsh
->mesh_id_len
= 0;
617 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON_ENABLED
);
618 sta_info_flush(local
, NULL
);
620 del_timer_sync(&sdata
->u
.mesh
.housekeeping_timer
);
621 del_timer_sync(&sdata
->u
.mesh
.mesh_path_root_timer
);
623 * If the timer fired while we waited for it, it will have
624 * requeued the work. Now the work will be running again
625 * but will not rearm the timer again because it checks
626 * whether the interface is running, which, at this point,
629 cancel_work_sync(&sdata
->work
);
631 local
->fif_other_bss
--;
632 atomic_dec(&local
->iff_allmultis
);
633 ieee80211_configure_filter(local
);
636 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data
*sdata
,
638 struct ieee80211_mgmt
*mgmt
,
640 struct ieee80211_rx_status
*rx_status
)
642 struct ieee80211_local
*local
= sdata
->local
;
643 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
644 struct ieee802_11_elems elems
;
645 struct ieee80211_channel
*channel
;
648 enum ieee80211_band band
= rx_status
->band
;
650 /* ignore ProbeResp to foreign address */
651 if (stype
== IEEE80211_STYPE_PROBE_RESP
&&
652 !ether_addr_equal(mgmt
->da
, sdata
->vif
.addr
))
655 baselen
= (u8
*) mgmt
->u
.probe_resp
.variable
- (u8
*) mgmt
;
659 ieee802_11_parse_elems(mgmt
->u
.probe_resp
.variable
, len
- baselen
,
662 /* ignore beacons from secure mesh peers if our security is off */
663 if (elems
.rsn_len
&& sdata
->u
.mesh
.security
== IEEE80211_MESH_SEC_NONE
)
666 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
667 freq
= ieee80211_channel_to_frequency(elems
.ds_params
[0], band
);
669 freq
= rx_status
->freq
;
671 channel
= ieee80211_get_channel(local
->hw
.wiphy
, freq
);
673 if (!channel
|| channel
->flags
& IEEE80211_CHAN_DISABLED
)
676 if (elems
.mesh_id
&& elems
.mesh_config
&&
677 mesh_matches_local(sdata
, &elems
))
678 mesh_neighbour_update(sdata
, mgmt
->sa
, &elems
);
681 ifmsh
->sync_ops
->rx_bcn_presp(sdata
,
682 stype
, mgmt
, &elems
, rx_status
);
685 static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data
*sdata
,
686 struct ieee80211_mgmt
*mgmt
,
688 struct ieee80211_rx_status
*rx_status
)
690 switch (mgmt
->u
.action
.category
) {
691 case WLAN_CATEGORY_SELF_PROTECTED
:
692 switch (mgmt
->u
.action
.u
.self_prot
.action_code
) {
693 case WLAN_SP_MESH_PEERING_OPEN
:
694 case WLAN_SP_MESH_PEERING_CLOSE
:
695 case WLAN_SP_MESH_PEERING_CONFIRM
:
696 mesh_rx_plink_frame(sdata
, mgmt
, len
, rx_status
);
700 case WLAN_CATEGORY_MESH_ACTION
:
701 if (mesh_action_is_path_sel(mgmt
))
702 mesh_rx_path_sel_frame(sdata
, mgmt
, len
);
707 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
710 struct ieee80211_rx_status
*rx_status
;
711 struct ieee80211_mgmt
*mgmt
;
714 rx_status
= IEEE80211_SKB_RXCB(skb
);
715 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
716 stype
= le16_to_cpu(mgmt
->frame_control
) & IEEE80211_FCTL_STYPE
;
719 case IEEE80211_STYPE_PROBE_RESP
:
720 case IEEE80211_STYPE_BEACON
:
721 ieee80211_mesh_rx_bcn_presp(sdata
, stype
, mgmt
, skb
->len
,
724 case IEEE80211_STYPE_ACTION
:
725 ieee80211_mesh_rx_mgmt_action(sdata
, mgmt
, skb
->len
, rx_status
);
730 void ieee80211_mesh_work(struct ieee80211_sub_if_data
*sdata
)
732 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
734 if (ifmsh
->preq_queue_len
&&
736 ifmsh
->last_preq
+ msecs_to_jiffies(ifmsh
->mshcfg
.dot11MeshHWMPpreqMinInterval
)))
737 mesh_path_start_discovery(sdata
);
739 if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE
, &ifmsh
->wrkq_flags
))
740 mesh_mpath_table_grow();
742 if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE
, &ifmsh
->wrkq_flags
))
743 mesh_mpp_table_grow();
745 if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
))
746 ieee80211_mesh_housekeeping(sdata
, ifmsh
);
748 if (test_and_clear_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
))
749 ieee80211_mesh_rootpath(sdata
);
751 if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST
, &ifmsh
->wrkq_flags
))
752 mesh_sync_adjust_tbtt(sdata
);
755 void ieee80211_mesh_notify_scan_completed(struct ieee80211_local
*local
)
757 struct ieee80211_sub_if_data
*sdata
;
760 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
)
761 if (ieee80211_vif_is_mesh(&sdata
->vif
))
762 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
766 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data
*sdata
)
768 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
770 setup_timer(&ifmsh
->housekeeping_timer
,
771 ieee80211_mesh_housekeeping_timer
,
772 (unsigned long) sdata
);
774 ifmsh
->accepting_plinks
= true;
777 ifmsh
->num_gates
= 0;
778 atomic_set(&ifmsh
->mpaths
, 0);
779 mesh_rmc_init(sdata
);
780 ifmsh
->last_preq
= jiffies
;
781 ifmsh
->next_perr
= jiffies
;
782 /* Allocate all mesh structures when creating the first mesh interface. */
785 setup_timer(&ifmsh
->mesh_path_timer
,
786 ieee80211_mesh_path_timer
,
787 (unsigned long) sdata
);
788 setup_timer(&ifmsh
->mesh_path_root_timer
,
789 ieee80211_mesh_path_root_timer
,
790 (unsigned long) sdata
);
791 INIT_LIST_HEAD(&ifmsh
->preq_queue
.list
);
792 spin_lock_init(&ifmsh
->mesh_preq_queue_lock
);
793 spin_lock_init(&ifmsh
->sync_offset_lock
);