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)
29 rm_cache
= kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry
),
33 void ieee80211s_stop(void)
37 kmem_cache_destroy(rm_cache
);
40 static void ieee80211_mesh_housekeeping_timer(unsigned long data
)
42 struct ieee80211_sub_if_data
*sdata
= (void *) data
;
43 struct ieee80211_local
*local
= sdata
->local
;
44 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
46 set_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
);
48 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
52 * mesh_matches_local - check if the config of a mesh point matches ours
54 * @sdata: local mesh subif
55 * @ie: information elements of a management frame from the mesh peer
57 * This function checks if the mesh configuration of a mesh point matches the
58 * local mesh configuration, i.e. if both nodes belong to the same mesh network.
60 bool mesh_matches_local(struct ieee80211_sub_if_data
*sdata
,
61 struct ieee802_11_elems
*ie
)
63 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
65 struct cfg80211_chan_def sta_chan_def
;
66 struct ieee80211_supported_band
*sband
;
69 * As support for each feature is added, check for matching
70 * - On mesh config capabilities
71 * - Power Save Support En
72 * - Sync support enabled
73 * - Sync support active
74 * - Sync support required from peer
76 * - Power management control on fc
78 if (!(ifmsh
->mesh_id_len
== ie
->mesh_id_len
&&
79 memcmp(ifmsh
->mesh_id
, ie
->mesh_id
, ie
->mesh_id_len
) == 0 &&
80 (ifmsh
->mesh_pp_id
== ie
->mesh_config
->meshconf_psel
) &&
81 (ifmsh
->mesh_pm_id
== ie
->mesh_config
->meshconf_pmetric
) &&
82 (ifmsh
->mesh_cc_id
== ie
->mesh_config
->meshconf_congest
) &&
83 (ifmsh
->mesh_sp_id
== ie
->mesh_config
->meshconf_synch
) &&
84 (ifmsh
->mesh_auth_id
== ie
->mesh_config
->meshconf_auth
)))
87 sband
= ieee80211_get_sband(sdata
);
91 ieee80211_sta_get_rates(sdata
, ie
, sband
->band
,
94 if (sdata
->vif
.bss_conf
.basic_rates
!= basic_rates
)
97 cfg80211_chandef_create(&sta_chan_def
, sdata
->vif
.bss_conf
.chandef
.chan
,
99 ieee80211_chandef_ht_oper(ie
->ht_operation
, &sta_chan_def
);
100 ieee80211_chandef_vht_oper(ie
->vht_operation
, &sta_chan_def
);
102 if (!cfg80211_chandef_compatible(&sdata
->vif
.bss_conf
.chandef
,
110 * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
112 * @ie: information elements of a management frame from the mesh peer
114 bool mesh_peer_accepts_plinks(struct ieee802_11_elems
*ie
)
116 return (ie
->mesh_config
->meshconf_cap
&
117 IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS
) != 0;
121 * mesh_accept_plinks_update - update accepting_plink in local mesh beacons
123 * @sdata: mesh interface in which mesh beacons are going to be updated
125 * Returns: beacon changed flag if the beacon content changed.
127 u32
mesh_accept_plinks_update(struct ieee80211_sub_if_data
*sdata
)
132 /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
133 * the mesh interface might be able to establish plinks with peers that
134 * are already on the table but are not on PLINK_ESTAB state. However,
135 * in general the mesh interface is not accepting peer link requests
136 * from new peers, and that must be reflected in the beacon
138 free_plinks
= mesh_plink_availables(sdata
);
140 if (free_plinks
!= sdata
->u
.mesh
.accepting_plinks
) {
141 sdata
->u
.mesh
.accepting_plinks
= free_plinks
;
142 changed
= BSS_CHANGED_BEACON
;
149 * mesh_sta_cleanup - clean up any mesh sta state
151 * @sta: mesh sta to clean up.
153 void mesh_sta_cleanup(struct sta_info
*sta
)
155 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
156 u32 changed
= mesh_plink_deactivate(sta
);
159 ieee80211_mbss_info_change_notify(sdata
, changed
);
162 int mesh_rmc_init(struct ieee80211_sub_if_data
*sdata
)
166 sdata
->u
.mesh
.rmc
= kmalloc(sizeof(struct mesh_rmc
), GFP_KERNEL
);
167 if (!sdata
->u
.mesh
.rmc
)
169 sdata
->u
.mesh
.rmc
->idx_mask
= RMC_BUCKETS
- 1;
170 for (i
= 0; i
< RMC_BUCKETS
; i
++)
171 INIT_HLIST_HEAD(&sdata
->u
.mesh
.rmc
->bucket
[i
]);
175 void mesh_rmc_free(struct ieee80211_sub_if_data
*sdata
)
177 struct mesh_rmc
*rmc
= sdata
->u
.mesh
.rmc
;
179 struct hlist_node
*n
;
182 if (!sdata
->u
.mesh
.rmc
)
185 for (i
= 0; i
< RMC_BUCKETS
; i
++) {
186 hlist_for_each_entry_safe(p
, n
, &rmc
->bucket
[i
], list
) {
188 kmem_cache_free(rm_cache
, p
);
193 sdata
->u
.mesh
.rmc
= NULL
;
197 * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
200 * @sa: source address
201 * @mesh_hdr: mesh_header
203 * Returns: 0 if the frame is not in the cache, nonzero otherwise.
205 * Checks using the source address and the mesh sequence number if we have
206 * received this frame lately. If the frame is not in the cache, it is added to
209 int mesh_rmc_check(struct ieee80211_sub_if_data
*sdata
,
210 const u8
*sa
, struct ieee80211s_hdr
*mesh_hdr
)
212 struct mesh_rmc
*rmc
= sdata
->u
.mesh
.rmc
;
217 struct hlist_node
*n
;
222 /* Don't care about endianness since only match matters */
223 memcpy(&seqnum
, &mesh_hdr
->seqnum
, sizeof(mesh_hdr
->seqnum
));
224 idx
= le32_to_cpu(mesh_hdr
->seqnum
) & rmc
->idx_mask
;
225 hlist_for_each_entry_safe(p
, n
, &rmc
->bucket
[idx
], list
) {
227 if (time_after(jiffies
, p
->exp_time
) ||
228 entries
== RMC_QUEUE_MAX_LEN
) {
230 kmem_cache_free(rm_cache
, p
);
232 } else if ((seqnum
== p
->seqnum
) && ether_addr_equal(sa
, p
->sa
))
236 p
= kmem_cache_alloc(rm_cache
, GFP_ATOMIC
);
241 p
->exp_time
= jiffies
+ RMC_TIMEOUT
;
242 memcpy(p
->sa
, sa
, ETH_ALEN
);
243 hlist_add_head(&p
->list
, &rmc
->bucket
[idx
]);
247 int mesh_add_meshconf_ie(struct ieee80211_sub_if_data
*sdata
,
250 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
252 u8 meshconf_len
= sizeof(struct ieee80211_meshconf_ie
);
254 if (skb_tailroom(skb
) < 2 + meshconf_len
)
257 pos
= skb_put(skb
, 2 + meshconf_len
);
258 *pos
++ = WLAN_EID_MESH_CONFIG
;
259 *pos
++ = meshconf_len
;
261 /* save a pointer for quick updates in pre-tbtt */
262 ifmsh
->meshconf_offset
= pos
- skb
->data
;
264 /* Active path selection protocol ID */
265 *pos
++ = ifmsh
->mesh_pp_id
;
266 /* Active path selection metric ID */
267 *pos
++ = ifmsh
->mesh_pm_id
;
268 /* Congestion control mode identifier */
269 *pos
++ = ifmsh
->mesh_cc_id
;
270 /* Synchronization protocol identifier */
271 *pos
++ = ifmsh
->mesh_sp_id
;
272 /* Authentication Protocol identifier */
273 *pos
++ = ifmsh
->mesh_auth_id
;
274 /* Mesh Formation Info - number of neighbors */
275 neighbors
= atomic_read(&ifmsh
->estab_plinks
);
276 neighbors
= min_t(int, neighbors
, IEEE80211_MAX_MESH_PEERINGS
);
277 *pos
++ = neighbors
<< 1;
278 /* Mesh capability */
280 *pos
|= ifmsh
->mshcfg
.dot11MeshForwarding
?
281 IEEE80211_MESHCONF_CAPAB_FORWARDING
: 0x00;
282 *pos
|= ifmsh
->accepting_plinks
?
283 IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS
: 0x00;
284 /* Mesh PS mode. See IEEE802.11-2012 8.4.2.100.8 */
285 *pos
|= ifmsh
->ps_peers_deep_sleep
?
286 IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL
: 0x00;
290 int mesh_add_meshid_ie(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
)
292 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
295 if (skb_tailroom(skb
) < 2 + ifmsh
->mesh_id_len
)
298 pos
= skb_put(skb
, 2 + ifmsh
->mesh_id_len
);
299 *pos
++ = WLAN_EID_MESH_ID
;
300 *pos
++ = ifmsh
->mesh_id_len
;
301 if (ifmsh
->mesh_id_len
)
302 memcpy(pos
, ifmsh
->mesh_id
, ifmsh
->mesh_id_len
);
307 static int mesh_add_awake_window_ie(struct ieee80211_sub_if_data
*sdata
,
310 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
313 /* see IEEE802.11-2012 13.14.6 */
314 if (ifmsh
->ps_peers_light_sleep
== 0 &&
315 ifmsh
->ps_peers_deep_sleep
== 0 &&
316 ifmsh
->nonpeer_pm
== NL80211_MESH_POWER_ACTIVE
)
319 if (skb_tailroom(skb
) < 4)
322 pos
= skb_put(skb
, 2 + 2);
323 *pos
++ = WLAN_EID_MESH_AWAKE_WINDOW
;
325 put_unaligned_le16(ifmsh
->mshcfg
.dot11MeshAwakeWindowDuration
, pos
);
330 int mesh_add_vendor_ies(struct ieee80211_sub_if_data
*sdata
,
333 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
337 if (!ifmsh
->ie
|| !ifmsh
->ie_len
)
340 /* fast-forward to vendor IEs */
341 offset
= ieee80211_ie_split_vendor(ifmsh
->ie
, ifmsh
->ie_len
, 0);
343 if (offset
< ifmsh
->ie_len
) {
344 len
= ifmsh
->ie_len
- offset
;
345 data
= ifmsh
->ie
+ offset
;
346 if (skb_tailroom(skb
) < len
)
348 memcpy(skb_put(skb
, len
), data
, len
);
354 int mesh_add_rsn_ie(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
)
356 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
360 if (!ifmsh
->ie
|| !ifmsh
->ie_len
)
364 data
= cfg80211_find_ie(WLAN_EID_RSN
, ifmsh
->ie
, ifmsh
->ie_len
);
370 if (skb_tailroom(skb
) < len
)
372 memcpy(skb_put(skb
, len
), data
, len
);
377 static int mesh_add_ds_params_ie(struct ieee80211_sub_if_data
*sdata
,
380 struct ieee80211_chanctx_conf
*chanctx_conf
;
381 struct ieee80211_channel
*chan
;
384 if (skb_tailroom(skb
) < 3)
388 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
389 if (WARN_ON(!chanctx_conf
)) {
393 chan
= chanctx_conf
->def
.chan
;
396 pos
= skb_put(skb
, 2 + 1);
397 *pos
++ = WLAN_EID_DS_PARAMS
;
399 *pos
++ = ieee80211_frequency_to_channel(chan
->center_freq
);
404 int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data
*sdata
,
407 struct ieee80211_supported_band
*sband
;
410 sband
= ieee80211_get_sband(sdata
);
414 if (!sband
->ht_cap
.ht_supported
||
415 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_20_NOHT
||
416 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_5
||
417 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_10
)
420 if (skb_tailroom(skb
) < 2 + sizeof(struct ieee80211_ht_cap
))
423 pos
= skb_put(skb
, 2 + sizeof(struct ieee80211_ht_cap
));
424 ieee80211_ie_build_ht_cap(pos
, &sband
->ht_cap
, sband
->ht_cap
.cap
);
429 int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data
*sdata
,
432 struct ieee80211_local
*local
= sdata
->local
;
433 struct ieee80211_chanctx_conf
*chanctx_conf
;
434 struct ieee80211_channel
*channel
;
435 struct ieee80211_supported_band
*sband
;
436 struct ieee80211_sta_ht_cap
*ht_cap
;
440 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
441 if (WARN_ON(!chanctx_conf
)) {
445 channel
= chanctx_conf
->def
.chan
;
448 sband
= local
->hw
.wiphy
->bands
[channel
->band
];
449 ht_cap
= &sband
->ht_cap
;
451 if (!ht_cap
->ht_supported
||
452 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_20_NOHT
||
453 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_5
||
454 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_10
)
457 if (skb_tailroom(skb
) < 2 + sizeof(struct ieee80211_ht_operation
))
460 pos
= skb_put(skb
, 2 + sizeof(struct ieee80211_ht_operation
));
461 ieee80211_ie_build_ht_oper(pos
, ht_cap
, &sdata
->vif
.bss_conf
.chandef
,
462 sdata
->vif
.bss_conf
.ht_operation_mode
,
468 int mesh_add_vht_cap_ie(struct ieee80211_sub_if_data
*sdata
,
471 struct ieee80211_supported_band
*sband
;
474 sband
= ieee80211_get_sband(sdata
);
478 if (!sband
->vht_cap
.vht_supported
||
479 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_20_NOHT
||
480 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_5
||
481 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_10
)
484 if (skb_tailroom(skb
) < 2 + sizeof(struct ieee80211_vht_cap
))
487 pos
= skb_put(skb
, 2 + sizeof(struct ieee80211_vht_cap
));
488 ieee80211_ie_build_vht_cap(pos
, &sband
->vht_cap
, sband
->vht_cap
.cap
);
493 int mesh_add_vht_oper_ie(struct ieee80211_sub_if_data
*sdata
,
496 struct ieee80211_local
*local
= sdata
->local
;
497 struct ieee80211_chanctx_conf
*chanctx_conf
;
498 struct ieee80211_channel
*channel
;
499 struct ieee80211_supported_band
*sband
;
500 struct ieee80211_sta_vht_cap
*vht_cap
;
504 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
505 if (WARN_ON(!chanctx_conf
)) {
509 channel
= chanctx_conf
->def
.chan
;
512 sband
= local
->hw
.wiphy
->bands
[channel
->band
];
513 vht_cap
= &sband
->vht_cap
;
515 if (!vht_cap
->vht_supported
||
516 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_20_NOHT
||
517 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_5
||
518 sdata
->vif
.bss_conf
.chandef
.width
== NL80211_CHAN_WIDTH_10
)
521 if (skb_tailroom(skb
) < 2 + sizeof(struct ieee80211_vht_operation
))
524 pos
= skb_put(skb
, 2 + sizeof(struct ieee80211_vht_operation
));
525 ieee80211_ie_build_vht_oper(pos
, vht_cap
,
526 &sdata
->vif
.bss_conf
.chandef
);
531 static void ieee80211_mesh_path_timer(unsigned long data
)
533 struct ieee80211_sub_if_data
*sdata
=
534 (struct ieee80211_sub_if_data
*) data
;
536 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
539 static void ieee80211_mesh_path_root_timer(unsigned long data
)
541 struct ieee80211_sub_if_data
*sdata
=
542 (struct ieee80211_sub_if_data
*) data
;
543 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
545 set_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
547 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
550 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh
*ifmsh
)
552 if (ifmsh
->mshcfg
.dot11MeshHWMPRootMode
> IEEE80211_ROOTMODE_ROOT
)
553 set_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
555 clear_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
556 /* stop running timer */
557 del_timer_sync(&ifmsh
->mesh_path_root_timer
);
562 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
563 * @hdr: 802.11 frame header
564 * @fc: frame control field
565 * @meshda: destination address in the mesh
566 * @meshsa: source address address in the mesh. Same as TA, as frame is
567 * locally originated.
569 * Return the length of the 802.11 (does not include a mesh control header)
571 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr
*hdr
, __le16
*fc
,
572 const u8
*meshda
, const u8
*meshsa
)
574 if (is_multicast_ether_addr(meshda
)) {
575 *fc
|= cpu_to_le16(IEEE80211_FCTL_FROMDS
);
577 memcpy(hdr
->addr1
, meshda
, ETH_ALEN
);
578 memcpy(hdr
->addr2
, meshsa
, ETH_ALEN
);
579 memcpy(hdr
->addr3
, meshsa
, ETH_ALEN
);
582 *fc
|= cpu_to_le16(IEEE80211_FCTL_FROMDS
| IEEE80211_FCTL_TODS
);
584 eth_zero_addr(hdr
->addr1
); /* RA is resolved later */
585 memcpy(hdr
->addr2
, meshsa
, ETH_ALEN
);
586 memcpy(hdr
->addr3
, meshda
, ETH_ALEN
);
587 memcpy(hdr
->addr4
, meshsa
, ETH_ALEN
);
593 * ieee80211_new_mesh_header - create a new mesh header
594 * @sdata: mesh interface to be used
595 * @meshhdr: uninitialized mesh header
596 * @addr4or5: 1st address in the ae header, which may correspond to address 4
597 * (if addr6 is NULL) or address 5 (if addr6 is present). It may
599 * @addr6: 2nd address in the ae header, which corresponds to addr6 of the
602 * Return the header length.
604 unsigned int ieee80211_new_mesh_header(struct ieee80211_sub_if_data
*sdata
,
605 struct ieee80211s_hdr
*meshhdr
,
606 const char *addr4or5
, const char *addr6
)
608 if (WARN_ON(!addr4or5
&& addr6
))
611 memset(meshhdr
, 0, sizeof(*meshhdr
));
613 meshhdr
->ttl
= sdata
->u
.mesh
.mshcfg
.dot11MeshTTL
;
615 /* FIXME: racy -- TX on multiple queues can be concurrent */
616 put_unaligned(cpu_to_le32(sdata
->u
.mesh
.mesh_seqnum
), &meshhdr
->seqnum
);
617 sdata
->u
.mesh
.mesh_seqnum
++;
619 if (addr4or5
&& !addr6
) {
620 meshhdr
->flags
|= MESH_FLAGS_AE_A4
;
621 memcpy(meshhdr
->eaddr1
, addr4or5
, ETH_ALEN
);
623 } else if (addr4or5
&& addr6
) {
624 meshhdr
->flags
|= MESH_FLAGS_AE_A5_A6
;
625 memcpy(meshhdr
->eaddr1
, addr4or5
, ETH_ALEN
);
626 memcpy(meshhdr
->eaddr2
, addr6
, ETH_ALEN
);
633 static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data
*sdata
)
635 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
638 if (ifmsh
->mshcfg
.plink_timeout
> 0)
639 ieee80211_sta_expire(sdata
, ifmsh
->mshcfg
.plink_timeout
* HZ
);
640 mesh_path_expire(sdata
);
642 changed
= mesh_accept_plinks_update(sdata
);
643 ieee80211_mbss_info_change_notify(sdata
, changed
);
645 mod_timer(&ifmsh
->housekeeping_timer
,
646 round_jiffies(jiffies
+
647 IEEE80211_MESH_HOUSEKEEPING_INTERVAL
));
650 static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data
*sdata
)
652 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
655 mesh_path_tx_root_frame(sdata
);
657 if (ifmsh
->mshcfg
.dot11MeshHWMPRootMode
== IEEE80211_PROACTIVE_RANN
)
658 interval
= ifmsh
->mshcfg
.dot11MeshHWMPRannInterval
;
660 interval
= ifmsh
->mshcfg
.dot11MeshHWMProotInterval
;
662 mod_timer(&ifmsh
->mesh_path_root_timer
,
663 round_jiffies(TU_TO_EXP_TIME(interval
)));
667 ieee80211_mesh_build_beacon(struct ieee80211_if_mesh
*ifmsh
)
669 struct beacon_data
*bcn
;
670 int head_len
, tail_len
;
672 struct ieee80211_mgmt
*mgmt
;
673 struct ieee80211_chanctx_conf
*chanctx_conf
;
674 struct mesh_csa_settings
*csa
;
675 enum nl80211_band band
;
677 struct ieee80211_sub_if_data
*sdata
;
678 int hdr_len
= offsetof(struct ieee80211_mgmt
, u
.beacon
) +
679 sizeof(mgmt
->u
.beacon
);
681 sdata
= container_of(ifmsh
, struct ieee80211_sub_if_data
, u
.mesh
);
683 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
684 band
= chanctx_conf
->def
.chan
->band
;
689 /* Channel Switch Announcement */
690 2 + sizeof(struct ieee80211_channel_sw_ie
) +
691 /* Mesh Channel Switch Parameters */
692 2 + sizeof(struct ieee80211_mesh_chansw_params_ie
) +
693 2 + 8 + /* supported rates */
694 2 + 3; /* DS params */
695 tail_len
= 2 + (IEEE80211_MAX_SUPP_RATES
- 8) +
696 2 + sizeof(struct ieee80211_ht_cap
) +
697 2 + sizeof(struct ieee80211_ht_operation
) +
698 2 + ifmsh
->mesh_id_len
+
699 2 + sizeof(struct ieee80211_meshconf_ie
) +
700 2 + sizeof(__le16
) + /* awake window */
701 2 + sizeof(struct ieee80211_vht_cap
) +
702 2 + sizeof(struct ieee80211_vht_operation
) +
705 bcn
= kzalloc(sizeof(*bcn
) + head_len
+ tail_len
, GFP_KERNEL
);
706 /* need an skb for IE builders to operate on */
707 skb
= dev_alloc_skb(max(head_len
, tail_len
));
713 * pointers go into the block we allocated,
714 * memory is | beacon_data | head | tail |
716 bcn
->head
= ((u8
*) bcn
) + sizeof(*bcn
);
718 /* fill in the head */
719 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, hdr_len
);
720 memset(mgmt
, 0, hdr_len
);
721 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
722 IEEE80211_STYPE_BEACON
);
723 eth_broadcast_addr(mgmt
->da
);
724 memcpy(mgmt
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
725 memcpy(mgmt
->bssid
, sdata
->vif
.addr
, ETH_ALEN
);
726 ieee80211_mps_set_frame_flags(sdata
, NULL
, (void *) mgmt
);
727 mgmt
->u
.beacon
.beacon_int
=
728 cpu_to_le16(sdata
->vif
.bss_conf
.beacon_int
);
729 mgmt
->u
.beacon
.capab_info
|= cpu_to_le16(
730 sdata
->u
.mesh
.security
? WLAN_CAPABILITY_PRIVACY
: 0);
732 pos
= skb_put(skb
, 2);
733 *pos
++ = WLAN_EID_SSID
;
737 csa
= rcu_dereference(ifmsh
->csa
);
739 pos
= skb_put(skb
, 13);
741 *pos
++ = WLAN_EID_CHANNEL_SWITCH
;
744 *pos
++ = ieee80211_frequency_to_channel(
745 csa
->settings
.chandef
.chan
->center_freq
);
746 bcn
->csa_current_counter
= csa
->settings
.count
;
747 bcn
->csa_counter_offsets
[0] = hdr_len
+ 6;
748 *pos
++ = csa
->settings
.count
;
749 *pos
++ = WLAN_EID_CHAN_SWITCH_PARAM
;
751 if (ifmsh
->csa_role
== IEEE80211_MESH_CSA_ROLE_INIT
) {
752 *pos
++ = ifmsh
->mshcfg
.dot11MeshTTL
;
753 *pos
|= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR
;
755 *pos
++ = ifmsh
->chsw_ttl
;
757 *pos
++ |= csa
->settings
.block_tx
?
758 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT
: 0x00;
759 put_unaligned_le16(WLAN_REASON_MESH_CHAN
, pos
);
761 put_unaligned_le16(ifmsh
->pre_value
, pos
);
766 if (ieee80211_add_srates_ie(sdata
, skb
, true, band
) ||
767 mesh_add_ds_params_ie(sdata
, skb
))
770 bcn
->head_len
= skb
->len
;
771 memcpy(bcn
->head
, skb
->data
, bcn
->head_len
);
775 bcn
->tail
= bcn
->head
+ bcn
->head_len
;
777 if (ieee80211_add_ext_srates_ie(sdata
, skb
, true, band
) ||
778 mesh_add_rsn_ie(sdata
, skb
) ||
779 mesh_add_ht_cap_ie(sdata
, skb
) ||
780 mesh_add_ht_oper_ie(sdata
, skb
) ||
781 mesh_add_meshid_ie(sdata
, skb
) ||
782 mesh_add_meshconf_ie(sdata
, skb
) ||
783 mesh_add_awake_window_ie(sdata
, skb
) ||
784 mesh_add_vht_cap_ie(sdata
, skb
) ||
785 mesh_add_vht_oper_ie(sdata
, skb
) ||
786 mesh_add_vendor_ies(sdata
, skb
))
789 bcn
->tail_len
= skb
->len
;
790 memcpy(bcn
->tail
, skb
->data
, bcn
->tail_len
);
791 bcn
->meshconf
= (struct ieee80211_meshconf_ie
*)
792 (bcn
->tail
+ ifmsh
->meshconf_offset
);
795 rcu_assign_pointer(ifmsh
->beacon
, bcn
);
804 ieee80211_mesh_rebuild_beacon(struct ieee80211_sub_if_data
*sdata
)
806 struct beacon_data
*old_bcn
;
809 old_bcn
= rcu_dereference_protected(sdata
->u
.mesh
.beacon
,
810 lockdep_is_held(&sdata
->wdev
.mtx
));
811 ret
= ieee80211_mesh_build_beacon(&sdata
->u
.mesh
);
813 /* just reuse old beacon */
817 kfree_rcu(old_bcn
, rcu_head
);
821 void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
824 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
825 unsigned long bits
= changed
;
831 /* if we race with running work, worst case this work becomes a noop */
832 for_each_set_bit(bit
, &bits
, sizeof(changed
) * BITS_PER_BYTE
)
833 set_bit(bit
, &ifmsh
->mbss_changed
);
834 set_bit(MESH_WORK_MBSS_CHANGED
, &ifmsh
->wrkq_flags
);
835 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
838 int ieee80211_start_mesh(struct ieee80211_sub_if_data
*sdata
)
840 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
841 struct ieee80211_local
*local
= sdata
->local
;
842 u32 changed
= BSS_CHANGED_BEACON
|
843 BSS_CHANGED_BEACON_ENABLED
|
845 BSS_CHANGED_BASIC_RATES
|
846 BSS_CHANGED_BEACON_INT
;
848 local
->fif_other_bss
++;
849 /* mesh ifaces must set allmulti to forward mcast traffic */
850 atomic_inc(&local
->iff_allmultis
);
851 ieee80211_configure_filter(local
);
853 ifmsh
->mesh_cc_id
= 0; /* Disabled */
854 /* register sync ops from extensible synchronization framework */
855 ifmsh
->sync_ops
= ieee80211_mesh_sync_ops_get(ifmsh
->mesh_sp_id
);
856 ifmsh
->sync_offset_clockdrift_max
= 0;
857 set_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
);
858 ieee80211_mesh_root_setup(ifmsh
);
859 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
860 sdata
->vif
.bss_conf
.ht_operation_mode
=
861 ifmsh
->mshcfg
.ht_opmode
;
862 sdata
->vif
.bss_conf
.enable_beacon
= true;
864 changed
|= ieee80211_mps_local_status_update(sdata
);
866 if (ieee80211_mesh_build_beacon(ifmsh
)) {
867 ieee80211_stop_mesh(sdata
);
871 ieee80211_recalc_dtim(local
, sdata
);
872 ieee80211_bss_info_change_notify(sdata
, changed
);
874 netif_carrier_on(sdata
->dev
);
878 void ieee80211_stop_mesh(struct ieee80211_sub_if_data
*sdata
)
880 struct ieee80211_local
*local
= sdata
->local
;
881 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
882 struct beacon_data
*bcn
;
884 netif_carrier_off(sdata
->dev
);
886 /* flush STAs and mpaths on this iface */
887 sta_info_flush(sdata
);
888 mesh_path_flush_by_iface(sdata
);
890 /* stop the beacon */
891 ifmsh
->mesh_id_len
= 0;
892 sdata
->vif
.bss_conf
.enable_beacon
= false;
893 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED
, &sdata
->state
);
894 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON_ENABLED
);
897 bcn
= rcu_dereference_protected(ifmsh
->beacon
,
898 lockdep_is_held(&sdata
->wdev
.mtx
));
899 RCU_INIT_POINTER(ifmsh
->beacon
, NULL
);
900 kfree_rcu(bcn
, rcu_head
);
902 /* free all potentially still buffered group-addressed frames */
903 local
->total_ps_buffered
-= skb_queue_len(&ifmsh
->ps
.bc_buf
);
904 skb_queue_purge(&ifmsh
->ps
.bc_buf
);
906 del_timer_sync(&sdata
->u
.mesh
.housekeeping_timer
);
907 del_timer_sync(&sdata
->u
.mesh
.mesh_path_root_timer
);
908 del_timer_sync(&sdata
->u
.mesh
.mesh_path_timer
);
910 /* clear any mesh work (for next join) we may have accrued */
911 ifmsh
->wrkq_flags
= 0;
912 ifmsh
->mbss_changed
= 0;
914 local
->fif_other_bss
--;
915 atomic_dec(&local
->iff_allmultis
);
916 ieee80211_configure_filter(local
);
920 ieee80211_mesh_process_chnswitch(struct ieee80211_sub_if_data
*sdata
,
921 struct ieee802_11_elems
*elems
, bool beacon
)
923 struct cfg80211_csa_settings params
;
924 struct ieee80211_csa_ie csa_ie
;
925 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
926 struct ieee80211_supported_band
*sband
;
930 sdata_assert_lock(sdata
);
932 sband
= ieee80211_get_sband(sdata
);
936 sta_flags
= IEEE80211_STA_DISABLE_VHT
;
937 switch (sdata
->vif
.bss_conf
.chandef
.width
) {
938 case NL80211_CHAN_WIDTH_20_NOHT
:
939 sta_flags
|= IEEE80211_STA_DISABLE_HT
;
940 case NL80211_CHAN_WIDTH_20
:
941 sta_flags
|= IEEE80211_STA_DISABLE_40MHZ
;
947 memset(¶ms
, 0, sizeof(params
));
948 memset(&csa_ie
, 0, sizeof(csa_ie
));
949 err
= ieee80211_parse_ch_switch_ie(sdata
, elems
, sband
->band
,
950 sta_flags
, sdata
->vif
.addr
,
957 params
.chandef
= csa_ie
.chandef
;
958 params
.count
= csa_ie
.count
;
960 if (!cfg80211_chandef_usable(sdata
->local
->hw
.wiphy
, ¶ms
.chandef
,
961 IEEE80211_CHAN_DISABLED
)) {
963 "mesh STA %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), aborting\n",
965 params
.chandef
.chan
->center_freq
,
966 params
.chandef
.width
,
967 params
.chandef
.center_freq1
,
968 params
.chandef
.center_freq2
);
972 err
= cfg80211_chandef_dfs_required(sdata
->local
->hw
.wiphy
,
974 NL80211_IFTYPE_MESH_POINT
);
978 /* TODO: DFS not (yet) supported */
981 params
.radar_required
= err
;
983 if (cfg80211_chandef_identical(¶ms
.chandef
,
984 &sdata
->vif
.bss_conf
.chandef
)) {
986 "received csa with an identical chandef, ignoring\n");
991 "received channel switch announcement to go to channel %d MHz\n",
992 params
.chandef
.chan
->center_freq
);
994 params
.block_tx
= csa_ie
.mode
& WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT
;
996 ifmsh
->chsw_ttl
= csa_ie
.ttl
- 1;
997 if (ifmsh
->pre_value
>= csa_ie
.pre_value
)
999 ifmsh
->pre_value
= csa_ie
.pre_value
;
1002 if (ifmsh
->chsw_ttl
>= ifmsh
->mshcfg
.dot11MeshTTL
)
1005 ifmsh
->csa_role
= IEEE80211_MESH_CSA_ROLE_REPEATER
;
1007 if (ieee80211_channel_switch(sdata
->local
->hw
.wiphy
, sdata
->dev
,
1015 ieee80211_mesh_rx_probe_req(struct ieee80211_sub_if_data
*sdata
,
1016 struct ieee80211_mgmt
*mgmt
, size_t len
)
1018 struct ieee80211_local
*local
= sdata
->local
;
1019 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1020 struct sk_buff
*presp
;
1021 struct beacon_data
*bcn
;
1022 struct ieee80211_mgmt
*hdr
;
1023 struct ieee802_11_elems elems
;
1027 pos
= mgmt
->u
.probe_req
.variable
;
1028 baselen
= (u8
*) pos
- (u8
*) mgmt
;
1032 ieee802_11_parse_elems(pos
, len
- baselen
, false, &elems
);
1037 /* 802.11-2012 10.1.4.3.2 */
1038 if ((!ether_addr_equal(mgmt
->da
, sdata
->vif
.addr
) &&
1039 !is_broadcast_ether_addr(mgmt
->da
)) ||
1040 elems
.ssid_len
!= 0)
1043 if (elems
.mesh_id_len
!= 0 &&
1044 (elems
.mesh_id_len
!= ifmsh
->mesh_id_len
||
1045 memcmp(elems
.mesh_id
, ifmsh
->mesh_id
, ifmsh
->mesh_id_len
)))
1049 bcn
= rcu_dereference(ifmsh
->beacon
);
1054 presp
= dev_alloc_skb(local
->tx_headroom
+
1055 bcn
->head_len
+ bcn
->tail_len
);
1059 skb_reserve(presp
, local
->tx_headroom
);
1060 memcpy(skb_put(presp
, bcn
->head_len
), bcn
->head
, bcn
->head_len
);
1061 memcpy(skb_put(presp
, bcn
->tail_len
), bcn
->tail
, bcn
->tail_len
);
1062 hdr
= (struct ieee80211_mgmt
*) presp
->data
;
1063 hdr
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
1064 IEEE80211_STYPE_PROBE_RESP
);
1065 memcpy(hdr
->da
, mgmt
->sa
, ETH_ALEN
);
1066 IEEE80211_SKB_CB(presp
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
1067 ieee80211_tx_skb(sdata
, presp
);
1072 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data
*sdata
,
1074 struct ieee80211_mgmt
*mgmt
,
1076 struct ieee80211_rx_status
*rx_status
)
1078 struct ieee80211_local
*local
= sdata
->local
;
1079 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1080 struct ieee802_11_elems elems
;
1081 struct ieee80211_channel
*channel
;
1084 enum nl80211_band band
= rx_status
->band
;
1086 /* ignore ProbeResp to foreign address */
1087 if (stype
== IEEE80211_STYPE_PROBE_RESP
&&
1088 !ether_addr_equal(mgmt
->da
, sdata
->vif
.addr
))
1091 baselen
= (u8
*) mgmt
->u
.probe_resp
.variable
- (u8
*) mgmt
;
1095 ieee802_11_parse_elems(mgmt
->u
.probe_resp
.variable
, len
- baselen
,
1098 /* ignore non-mesh or secure / unsecure mismatch */
1099 if ((!elems
.mesh_id
|| !elems
.mesh_config
) ||
1100 (elems
.rsn
&& sdata
->u
.mesh
.security
== IEEE80211_MESH_SEC_NONE
) ||
1101 (!elems
.rsn
&& sdata
->u
.mesh
.security
!= IEEE80211_MESH_SEC_NONE
))
1104 if (elems
.ds_params
)
1105 freq
= ieee80211_channel_to_frequency(elems
.ds_params
[0], band
);
1107 freq
= rx_status
->freq
;
1109 channel
= ieee80211_get_channel(local
->hw
.wiphy
, freq
);
1111 if (!channel
|| channel
->flags
& IEEE80211_CHAN_DISABLED
)
1114 if (mesh_matches_local(sdata
, &elems
)) {
1115 mpl_dbg(sdata
, "rssi_threshold=%d,rx_status->signal=%d\n",
1116 sdata
->u
.mesh
.mshcfg
.rssi_threshold
, rx_status
->signal
);
1117 if (!sdata
->u
.mesh
.user_mpm
||
1118 sdata
->u
.mesh
.mshcfg
.rssi_threshold
== 0 ||
1119 sdata
->u
.mesh
.mshcfg
.rssi_threshold
< rx_status
->signal
)
1120 mesh_neighbour_update(sdata
, mgmt
->sa
, &elems
);
1123 if (ifmsh
->sync_ops
)
1124 ifmsh
->sync_ops
->rx_bcn_presp(sdata
,
1125 stype
, mgmt
, &elems
, rx_status
);
1127 if (ifmsh
->csa_role
!= IEEE80211_MESH_CSA_ROLE_INIT
&&
1128 !sdata
->vif
.csa_active
)
1129 ieee80211_mesh_process_chnswitch(sdata
, &elems
, true);
1132 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data
*sdata
)
1134 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1135 struct mesh_csa_settings
*tmp_csa_settings
;
1139 /* Reset the TTL value and Initiator flag */
1140 ifmsh
->csa_role
= IEEE80211_MESH_CSA_ROLE_NONE
;
1141 ifmsh
->chsw_ttl
= 0;
1143 /* Remove the CSA and MCSP elements from the beacon */
1144 tmp_csa_settings
= rcu_dereference(ifmsh
->csa
);
1145 RCU_INIT_POINTER(ifmsh
->csa
, NULL
);
1146 if (tmp_csa_settings
)
1147 kfree_rcu(tmp_csa_settings
, rcu_head
);
1148 ret
= ieee80211_mesh_rebuild_beacon(sdata
);
1152 changed
|= BSS_CHANGED_BEACON
;
1154 mcsa_dbg(sdata
, "complete switching to center freq %d MHz",
1155 sdata
->vif
.bss_conf
.chandef
.chan
->center_freq
);
1159 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data
*sdata
,
1160 struct cfg80211_csa_settings
*csa_settings
)
1162 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1163 struct mesh_csa_settings
*tmp_csa_settings
;
1166 tmp_csa_settings
= kmalloc(sizeof(*tmp_csa_settings
),
1168 if (!tmp_csa_settings
)
1171 memcpy(&tmp_csa_settings
->settings
, csa_settings
,
1172 sizeof(struct cfg80211_csa_settings
));
1174 rcu_assign_pointer(ifmsh
->csa
, tmp_csa_settings
);
1176 ret
= ieee80211_mesh_rebuild_beacon(sdata
);
1178 tmp_csa_settings
= rcu_dereference(ifmsh
->csa
);
1179 RCU_INIT_POINTER(ifmsh
->csa
, NULL
);
1180 kfree_rcu(tmp_csa_settings
, rcu_head
);
1184 return BSS_CHANGED_BEACON
;
1187 static int mesh_fwd_csa_frame(struct ieee80211_sub_if_data
*sdata
,
1188 struct ieee80211_mgmt
*mgmt
, size_t len
)
1190 struct ieee80211_mgmt
*mgmt_fwd
;
1191 struct sk_buff
*skb
;
1192 struct ieee80211_local
*local
= sdata
->local
;
1193 u8
*pos
= mgmt
->u
.action
.u
.chan_switch
.variable
;
1196 skb
= dev_alloc_skb(local
->tx_headroom
+ len
);
1199 skb_reserve(skb
, local
->tx_headroom
);
1200 mgmt_fwd
= (struct ieee80211_mgmt
*) skb_put(skb
, len
);
1202 /* offset_ttl is based on whether the secondary channel
1203 * offset is available or not. Subtract 1 from the mesh TTL
1204 * and disable the initiator flag before forwarding.
1206 offset_ttl
= (len
< 42) ? 7 : 10;
1207 *(pos
+ offset_ttl
) -= 1;
1208 *(pos
+ offset_ttl
+ 1) &= ~WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR
;
1210 memcpy(mgmt_fwd
, mgmt
, len
);
1211 eth_broadcast_addr(mgmt_fwd
->da
);
1212 memcpy(mgmt_fwd
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
1213 memcpy(mgmt_fwd
->bssid
, sdata
->vif
.addr
, ETH_ALEN
);
1215 ieee80211_tx_skb(sdata
, skb
);
1219 static void mesh_rx_csa_frame(struct ieee80211_sub_if_data
*sdata
,
1220 struct ieee80211_mgmt
*mgmt
, size_t len
)
1222 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1223 struct ieee802_11_elems elems
;
1225 bool fwd_csa
= true;
1229 if (mgmt
->u
.action
.u
.measurement
.action_code
!=
1230 WLAN_ACTION_SPCT_CHL_SWITCH
)
1233 pos
= mgmt
->u
.action
.u
.chan_switch
.variable
;
1234 baselen
= offsetof(struct ieee80211_mgmt
,
1235 u
.action
.u
.chan_switch
.variable
);
1236 ieee802_11_parse_elems(pos
, len
- baselen
, false, &elems
);
1238 ifmsh
->chsw_ttl
= elems
.mesh_chansw_params_ie
->mesh_ttl
;
1239 if (!--ifmsh
->chsw_ttl
)
1242 pre_value
= le16_to_cpu(elems
.mesh_chansw_params_ie
->mesh_pre_value
);
1243 if (ifmsh
->pre_value
>= pre_value
)
1246 ifmsh
->pre_value
= pre_value
;
1248 if (!sdata
->vif
.csa_active
&&
1249 !ieee80211_mesh_process_chnswitch(sdata
, &elems
, false)) {
1250 mcsa_dbg(sdata
, "Failed to process CSA action frame");
1254 /* forward or re-broadcast the CSA frame */
1256 if (mesh_fwd_csa_frame(sdata
, mgmt
, len
) < 0)
1257 mcsa_dbg(sdata
, "Failed to forward the CSA frame");
1261 static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data
*sdata
,
1262 struct ieee80211_mgmt
*mgmt
,
1264 struct ieee80211_rx_status
*rx_status
)
1266 switch (mgmt
->u
.action
.category
) {
1267 case WLAN_CATEGORY_SELF_PROTECTED
:
1268 switch (mgmt
->u
.action
.u
.self_prot
.action_code
) {
1269 case WLAN_SP_MESH_PEERING_OPEN
:
1270 case WLAN_SP_MESH_PEERING_CLOSE
:
1271 case WLAN_SP_MESH_PEERING_CONFIRM
:
1272 mesh_rx_plink_frame(sdata
, mgmt
, len
, rx_status
);
1276 case WLAN_CATEGORY_MESH_ACTION
:
1277 if (mesh_action_is_path_sel(mgmt
))
1278 mesh_rx_path_sel_frame(sdata
, mgmt
, len
);
1280 case WLAN_CATEGORY_SPECTRUM_MGMT
:
1281 mesh_rx_csa_frame(sdata
, mgmt
, len
);
1286 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1287 struct sk_buff
*skb
)
1289 struct ieee80211_rx_status
*rx_status
;
1290 struct ieee80211_mgmt
*mgmt
;
1295 /* mesh already went down */
1296 if (!sdata
->u
.mesh
.mesh_id_len
)
1299 rx_status
= IEEE80211_SKB_RXCB(skb
);
1300 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1301 stype
= le16_to_cpu(mgmt
->frame_control
) & IEEE80211_FCTL_STYPE
;
1304 case IEEE80211_STYPE_PROBE_RESP
:
1305 case IEEE80211_STYPE_BEACON
:
1306 ieee80211_mesh_rx_bcn_presp(sdata
, stype
, mgmt
, skb
->len
,
1309 case IEEE80211_STYPE_PROBE_REQ
:
1310 ieee80211_mesh_rx_probe_req(sdata
, mgmt
, skb
->len
);
1312 case IEEE80211_STYPE_ACTION
:
1313 ieee80211_mesh_rx_mgmt_action(sdata
, mgmt
, skb
->len
, rx_status
);
1317 sdata_unlock(sdata
);
1320 static void mesh_bss_info_changed(struct ieee80211_sub_if_data
*sdata
)
1322 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1323 u32 bit
, changed
= 0;
1325 for_each_set_bit(bit
, &ifmsh
->mbss_changed
,
1326 sizeof(changed
) * BITS_PER_BYTE
) {
1327 clear_bit(bit
, &ifmsh
->mbss_changed
);
1328 changed
|= BIT(bit
);
1331 if (sdata
->vif
.bss_conf
.enable_beacon
&&
1332 (changed
& (BSS_CHANGED_BEACON
|
1334 BSS_CHANGED_BASIC_RATES
|
1335 BSS_CHANGED_BEACON_INT
)))
1336 if (ieee80211_mesh_rebuild_beacon(sdata
))
1339 ieee80211_bss_info_change_notify(sdata
, changed
);
1342 void ieee80211_mesh_work(struct ieee80211_sub_if_data
*sdata
)
1344 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1348 /* mesh already went down */
1349 if (!sdata
->u
.mesh
.mesh_id_len
)
1352 if (ifmsh
->preq_queue_len
&&
1354 ifmsh
->last_preq
+ msecs_to_jiffies(ifmsh
->mshcfg
.dot11MeshHWMPpreqMinInterval
)))
1355 mesh_path_start_discovery(sdata
);
1357 if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
))
1358 ieee80211_mesh_housekeeping(sdata
);
1360 if (test_and_clear_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
))
1361 ieee80211_mesh_rootpath(sdata
);
1363 if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST
, &ifmsh
->wrkq_flags
))
1364 mesh_sync_adjust_tsf(sdata
);
1366 if (test_and_clear_bit(MESH_WORK_MBSS_CHANGED
, &ifmsh
->wrkq_flags
))
1367 mesh_bss_info_changed(sdata
);
1369 sdata_unlock(sdata
);
1373 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data
*sdata
)
1375 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
1376 static u8 zero_addr
[ETH_ALEN
] = {};
1378 setup_timer(&ifmsh
->housekeeping_timer
,
1379 ieee80211_mesh_housekeeping_timer
,
1380 (unsigned long) sdata
);
1382 ifmsh
->accepting_plinks
= true;
1383 atomic_set(&ifmsh
->mpaths
, 0);
1384 mesh_rmc_init(sdata
);
1385 ifmsh
->last_preq
= jiffies
;
1386 ifmsh
->next_perr
= jiffies
;
1387 ifmsh
->csa_role
= IEEE80211_MESH_CSA_ROLE_NONE
;
1388 /* Allocate all mesh structures when creating the first mesh interface. */
1389 if (!mesh_allocated
)
1392 mesh_pathtbl_init(sdata
);
1394 setup_timer(&ifmsh
->mesh_path_timer
,
1395 ieee80211_mesh_path_timer
,
1396 (unsigned long) sdata
);
1397 setup_timer(&ifmsh
->mesh_path_root_timer
,
1398 ieee80211_mesh_path_root_timer
,
1399 (unsigned long) sdata
);
1400 INIT_LIST_HEAD(&ifmsh
->preq_queue
.list
);
1401 skb_queue_head_init(&ifmsh
->ps
.bc_buf
);
1402 spin_lock_init(&ifmsh
->mesh_preq_queue_lock
);
1403 spin_lock_init(&ifmsh
->sync_offset_lock
);
1404 RCU_INIT_POINTER(ifmsh
->beacon
, NULL
);
1406 sdata
->vif
.bss_conf
.bssid
= zero_addr
;
1409 void ieee80211_mesh_teardown_sdata(struct ieee80211_sub_if_data
*sdata
)
1411 mesh_rmc_free(sdata
);
1412 mesh_pathtbl_unregister(sdata
);