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 IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
17 #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
18 #define IEEE80211_MESH_RANN_INTERVAL (1 * HZ)
20 #define MESHCONF_CAPAB_ACCEPT_PLINKS 0x01
21 #define MESHCONF_CAPAB_FORWARDING 0x08
23 #define TMR_RUNNING_HK 0
24 #define TMR_RUNNING_MP 1
25 #define TMR_RUNNING_MPR 2
28 static struct kmem_cache
*rm_cache
;
30 void ieee80211s_init(void)
34 rm_cache
= kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry
),
38 void ieee80211s_stop(void)
40 mesh_pathtbl_unregister();
41 kmem_cache_destroy(rm_cache
);
44 static void ieee80211_mesh_housekeeping_timer(unsigned long data
)
46 struct ieee80211_sub_if_data
*sdata
= (void *) data
;
47 struct ieee80211_local
*local
= sdata
->local
;
48 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
50 set_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
);
52 if (local
->quiescing
) {
53 set_bit(TMR_RUNNING_HK
, &ifmsh
->timers_running
);
57 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
61 * mesh_matches_local - check if the config of a mesh point matches ours
63 * @ie: information elements of a management frame from the mesh peer
64 * @sdata: local mesh subif
66 * This function checks if the mesh configuration of a mesh point matches the
67 * local mesh configuration, i.e. if both nodes belong to the same mesh network.
69 bool mesh_matches_local(struct ieee802_11_elems
*ie
, struct ieee80211_sub_if_data
*sdata
)
71 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
74 * As support for each feature is added, check for matching
75 * - On mesh config capabilities
76 * - Power Save Support En
77 * - Sync support enabled
78 * - Sync support active
79 * - Sync support required from peer
81 * - Power management control on fc
83 if (ifmsh
->mesh_id_len
== ie
->mesh_id_len
&&
84 memcmp(ifmsh
->mesh_id
, ie
->mesh_id
, ie
->mesh_id_len
) == 0 &&
85 (ifmsh
->mesh_pp_id
== ie
->mesh_config
->meshconf_psel
) &&
86 (ifmsh
->mesh_pm_id
== ie
->mesh_config
->meshconf_pmetric
) &&
87 (ifmsh
->mesh_cc_id
== ie
->mesh_config
->meshconf_congest
) &&
88 (ifmsh
->mesh_sp_id
== ie
->mesh_config
->meshconf_synch
) &&
89 (ifmsh
->mesh_auth_id
== ie
->mesh_config
->meshconf_auth
))
96 * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
98 * @ie: information elements of a management frame from the mesh peer
100 bool mesh_peer_accepts_plinks(struct ieee802_11_elems
*ie
)
102 return (ie
->mesh_config
->meshconf_cap
&
103 MESHCONF_CAPAB_ACCEPT_PLINKS
) != 0;
107 * mesh_accept_plinks_update: update accepting_plink in local mesh beacons
109 * @sdata: mesh interface in which mesh beacons are going to be updated
111 void mesh_accept_plinks_update(struct ieee80211_sub_if_data
*sdata
)
115 /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
116 * the mesh interface might be able to establish plinks with peers that
117 * are already on the table but are not on PLINK_ESTAB state. However,
118 * in general the mesh interface is not accepting peer link requests
119 * from new peers, and that must be reflected in the beacon
121 free_plinks
= mesh_plink_availables(sdata
);
123 if (free_plinks
!= sdata
->u
.mesh
.accepting_plinks
)
124 ieee80211_mesh_housekeeping_timer((unsigned long) sdata
);
127 int mesh_rmc_init(struct ieee80211_sub_if_data
*sdata
)
131 sdata
->u
.mesh
.rmc
= kmalloc(sizeof(struct mesh_rmc
), GFP_KERNEL
);
132 if (!sdata
->u
.mesh
.rmc
)
134 sdata
->u
.mesh
.rmc
->idx_mask
= RMC_BUCKETS
- 1;
135 for (i
= 0; i
< RMC_BUCKETS
; i
++)
136 INIT_LIST_HEAD(&sdata
->u
.mesh
.rmc
->bucket
[i
].list
);
140 void mesh_rmc_free(struct ieee80211_sub_if_data
*sdata
)
142 struct mesh_rmc
*rmc
= sdata
->u
.mesh
.rmc
;
143 struct rmc_entry
*p
, *n
;
146 if (!sdata
->u
.mesh
.rmc
)
149 for (i
= 0; i
< RMC_BUCKETS
; i
++)
150 list_for_each_entry_safe(p
, n
, &rmc
->bucket
[i
].list
, list
) {
152 kmem_cache_free(rm_cache
, p
);
156 sdata
->u
.mesh
.rmc
= NULL
;
160 * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
162 * @sa: source address
163 * @mesh_hdr: mesh_header
165 * Returns: 0 if the frame is not in the cache, nonzero otherwise.
167 * Checks using the source address and the mesh sequence number if we have
168 * received this frame lately. If the frame is not in the cache, it is added to
171 int mesh_rmc_check(u8
*sa
, struct ieee80211s_hdr
*mesh_hdr
,
172 struct ieee80211_sub_if_data
*sdata
)
174 struct mesh_rmc
*rmc
= sdata
->u
.mesh
.rmc
;
178 struct rmc_entry
*p
, *n
;
180 /* Don't care about endianness since only match matters */
181 memcpy(&seqnum
, &mesh_hdr
->seqnum
, sizeof(mesh_hdr
->seqnum
));
182 idx
= le32_to_cpu(mesh_hdr
->seqnum
) & rmc
->idx_mask
;
183 list_for_each_entry_safe(p
, n
, &rmc
->bucket
[idx
].list
, list
) {
185 if (time_after(jiffies
, p
->exp_time
) ||
186 (entries
== RMC_QUEUE_MAX_LEN
)) {
188 kmem_cache_free(rm_cache
, p
);
190 } else if ((seqnum
== p
->seqnum
) &&
191 (memcmp(sa
, p
->sa
, ETH_ALEN
) == 0))
195 p
= kmem_cache_alloc(rm_cache
, GFP_ATOMIC
);
197 printk(KERN_DEBUG
"o11s: could not allocate RMC entry\n");
201 p
->exp_time
= jiffies
+ RMC_TIMEOUT
;
202 memcpy(p
->sa
, sa
, ETH_ALEN
);
203 list_add(&p
->list
, &rmc
->bucket
[idx
].list
);
208 mesh_add_meshconf_ie(struct sk_buff
*skb
, struct ieee80211_sub_if_data
*sdata
)
210 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
212 u8 meshconf_len
= sizeof(struct ieee80211_meshconf_ie
);
214 if (skb_tailroom(skb
) < 2 + meshconf_len
)
217 pos
= skb_put(skb
, 2 + meshconf_len
);
218 *pos
++ = WLAN_EID_MESH_CONFIG
;
219 *pos
++ = meshconf_len
;
221 /* Active path selection protocol ID */
222 *pos
++ = ifmsh
->mesh_pp_id
;
223 /* Active path selection metric ID */
224 *pos
++ = ifmsh
->mesh_pm_id
;
225 /* Congestion control mode identifier */
226 *pos
++ = ifmsh
->mesh_cc_id
;
227 /* Synchronization protocol identifier */
228 *pos
++ = ifmsh
->mesh_sp_id
;
229 /* Authentication Protocol identifier */
230 *pos
++ = ifmsh
->mesh_auth_id
;
231 /* Mesh Formation Info - number of neighbors */
232 neighbors
= atomic_read(&ifmsh
->mshstats
.estab_plinks
);
233 /* Number of neighbor mesh STAs or 15 whichever is smaller */
234 neighbors
= (neighbors
> 15) ? 15 : neighbors
;
235 *pos
++ = neighbors
<< 1;
236 /* Mesh capability */
237 ifmsh
->accepting_plinks
= mesh_plink_availables(sdata
);
238 *pos
= MESHCONF_CAPAB_FORWARDING
;
239 *pos
++ |= ifmsh
->accepting_plinks
?
240 MESHCONF_CAPAB_ACCEPT_PLINKS
: 0x00;
247 mesh_add_meshid_ie(struct sk_buff
*skb
, struct ieee80211_sub_if_data
*sdata
)
249 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
252 if (skb_tailroom(skb
) < 2 + ifmsh
->mesh_id_len
)
255 pos
= skb_put(skb
, 2 + ifmsh
->mesh_id_len
);
256 *pos
++ = WLAN_EID_MESH_ID
;
257 *pos
++ = ifmsh
->mesh_id_len
;
258 if (ifmsh
->mesh_id_len
)
259 memcpy(pos
, ifmsh
->mesh_id
, ifmsh
->mesh_id_len
);
265 mesh_add_vendor_ies(struct sk_buff
*skb
, struct ieee80211_sub_if_data
*sdata
)
267 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
271 if (!ifmsh
->ie
|| !ifmsh
->ie_len
)
274 /* fast-forward to vendor IEs */
275 offset
= ieee80211_ie_split_vendor(ifmsh
->ie
, ifmsh
->ie_len
, 0);
278 len
= ifmsh
->ie_len
- offset
;
279 data
= ifmsh
->ie
+ offset
;
280 if (skb_tailroom(skb
) < len
)
282 memcpy(skb_put(skb
, len
), data
, len
);
289 mesh_add_rsn_ie(struct sk_buff
*skb
, struct ieee80211_sub_if_data
*sdata
)
291 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
295 if (!ifmsh
->ie
|| !ifmsh
->ie_len
)
300 while (data
< ifmsh
->ie
+ ifmsh
->ie_len
) {
301 if (*data
== WLAN_EID_RSN
) {
309 if (skb_tailroom(skb
) < len
)
311 memcpy(skb_put(skb
, len
), data
, len
);
318 mesh_add_srates_ie(struct sk_buff
*skb
, struct ieee80211_sub_if_data
*sdata
)
320 struct ieee80211_local
*local
= sdata
->local
;
321 struct ieee80211_supported_band
*sband
;
325 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
326 rates
= sband
->n_bitrates
;
330 if (skb_tailroom(skb
) < rates
+ 2)
333 pos
= skb_put(skb
, rates
+ 2);
334 *pos
++ = WLAN_EID_SUPP_RATES
;
336 for (i
= 0; i
< rates
; i
++) {
337 rate
= sband
->bitrates
[i
].bitrate
;
338 *pos
++ = (u8
) (rate
/ 5);
345 mesh_add_ext_srates_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
;
353 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
354 exrates
= sband
->n_bitrates
;
360 if (skb_tailroom(skb
) < exrates
+ 2)
364 pos
= skb_put(skb
, exrates
+ 2);
365 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
367 for (i
= 8; i
< sband
->n_bitrates
; i
++) {
368 rate
= sband
->bitrates
[i
].bitrate
;
369 *pos
++ = (u8
) (rate
/ 5);
375 int mesh_add_ds_params_ie(struct sk_buff
*skb
,
376 struct ieee80211_sub_if_data
*sdata
)
378 struct ieee80211_local
*local
= sdata
->local
;
379 struct ieee80211_supported_band
*sband
;
382 if (skb_tailroom(skb
) < 3)
385 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
386 if (sband
->band
== IEEE80211_BAND_2GHZ
) {
387 pos
= skb_put(skb
, 2 + 1);
388 *pos
++ = WLAN_EID_DS_PARAMS
;
390 *pos
++ = ieee80211_frequency_to_channel(local
->hw
.conf
.channel
->center_freq
);
396 static void ieee80211_mesh_path_timer(unsigned long data
)
398 struct ieee80211_sub_if_data
*sdata
=
399 (struct ieee80211_sub_if_data
*) data
;
400 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
401 struct ieee80211_local
*local
= sdata
->local
;
403 if (local
->quiescing
) {
404 set_bit(TMR_RUNNING_MP
, &ifmsh
->timers_running
);
408 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
411 static void ieee80211_mesh_path_root_timer(unsigned long data
)
413 struct ieee80211_sub_if_data
*sdata
=
414 (struct ieee80211_sub_if_data
*) data
;
415 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
416 struct ieee80211_local
*local
= sdata
->local
;
418 set_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
420 if (local
->quiescing
) {
421 set_bit(TMR_RUNNING_MPR
, &ifmsh
->timers_running
);
425 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
428 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh
*ifmsh
)
430 if (ifmsh
->mshcfg
.dot11MeshHWMPRootMode
)
431 set_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
433 clear_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
);
434 /* stop running timer */
435 del_timer_sync(&ifmsh
->mesh_path_root_timer
);
440 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
441 * @hdr: 802.11 frame header
442 * @fc: frame control field
443 * @meshda: destination address in the mesh
444 * @meshsa: source address address in the mesh. Same as TA, as frame is
445 * locally originated.
447 * Return the length of the 802.11 (does not include a mesh control header)
449 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr
*hdr
, __le16
*fc
,
450 const u8
*meshda
, const u8
*meshsa
)
452 if (is_multicast_ether_addr(meshda
)) {
453 *fc
|= cpu_to_le16(IEEE80211_FCTL_FROMDS
);
455 memcpy(hdr
->addr1
, meshda
, ETH_ALEN
);
456 memcpy(hdr
->addr2
, meshsa
, ETH_ALEN
);
457 memcpy(hdr
->addr3
, meshsa
, ETH_ALEN
);
460 *fc
|= cpu_to_le16(IEEE80211_FCTL_FROMDS
|
461 IEEE80211_FCTL_TODS
);
463 memset(hdr
->addr1
, 0, ETH_ALEN
); /* RA is resolved later */
464 memcpy(hdr
->addr2
, meshsa
, ETH_ALEN
);
465 memcpy(hdr
->addr3
, meshda
, ETH_ALEN
);
466 memcpy(hdr
->addr4
, meshsa
, ETH_ALEN
);
472 * ieee80211_new_mesh_header - create a new mesh header
473 * @meshhdr: uninitialized mesh header
474 * @sdata: mesh interface to be used
475 * @addr4or5: 1st address in the ae header, which may correspond to address 4
476 * (if addr6 is NULL) or address 5 (if addr6 is present). It may
478 * @addr6: 2nd address in the ae header, which corresponds to addr6 of the
481 * Return the header length.
483 int ieee80211_new_mesh_header(struct ieee80211s_hdr
*meshhdr
,
484 struct ieee80211_sub_if_data
*sdata
, char *addr4or5
,
488 BUG_ON(!addr4or5
&& addr6
);
489 memset(meshhdr
, 0, sizeof(*meshhdr
));
490 meshhdr
->ttl
= sdata
->u
.mesh
.mshcfg
.dot11MeshTTL
;
491 put_unaligned(cpu_to_le32(sdata
->u
.mesh
.mesh_seqnum
), &meshhdr
->seqnum
);
492 sdata
->u
.mesh
.mesh_seqnum
++;
493 if (addr4or5
&& !addr6
) {
494 meshhdr
->flags
|= MESH_FLAGS_AE_A4
;
496 memcpy(meshhdr
->eaddr1
, addr4or5
, ETH_ALEN
);
497 } else if (addr4or5
&& addr6
) {
498 meshhdr
->flags
|= MESH_FLAGS_AE_A5_A6
;
499 aelen
+= 2 * ETH_ALEN
;
500 memcpy(meshhdr
->eaddr1
, addr4or5
, ETH_ALEN
);
501 memcpy(meshhdr
->eaddr2
, addr6
, ETH_ALEN
);
506 static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data
*sdata
,
507 struct ieee80211_if_mesh
*ifmsh
)
511 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
512 printk(KERN_DEBUG
"%s: running mesh housekeeping\n",
516 ieee80211_sta_expire(sdata
, IEEE80211_MESH_PEER_INACTIVITY_LIMIT
);
517 mesh_path_expire(sdata
);
519 free_plinks
= mesh_plink_availables(sdata
);
520 if (free_plinks
!= sdata
->u
.mesh
.accepting_plinks
)
521 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON
);
523 mod_timer(&ifmsh
->housekeeping_timer
,
524 round_jiffies(jiffies
+ IEEE80211_MESH_HOUSEKEEPING_INTERVAL
));
527 static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data
*sdata
)
529 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
531 mesh_path_tx_root_frame(sdata
);
532 mod_timer(&ifmsh
->mesh_path_root_timer
,
533 round_jiffies(jiffies
+ IEEE80211_MESH_RANN_INTERVAL
));
537 void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data
*sdata
)
539 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
541 /* use atomic bitops in case both timers fire at the same time */
543 if (del_timer_sync(&ifmsh
->housekeeping_timer
))
544 set_bit(TMR_RUNNING_HK
, &ifmsh
->timers_running
);
545 if (del_timer_sync(&ifmsh
->mesh_path_timer
))
546 set_bit(TMR_RUNNING_MP
, &ifmsh
->timers_running
);
547 if (del_timer_sync(&ifmsh
->mesh_path_root_timer
))
548 set_bit(TMR_RUNNING_MPR
, &ifmsh
->timers_running
);
551 void ieee80211_mesh_restart(struct ieee80211_sub_if_data
*sdata
)
553 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
555 if (test_and_clear_bit(TMR_RUNNING_HK
, &ifmsh
->timers_running
))
556 add_timer(&ifmsh
->housekeeping_timer
);
557 if (test_and_clear_bit(TMR_RUNNING_MP
, &ifmsh
->timers_running
))
558 add_timer(&ifmsh
->mesh_path_timer
);
559 if (test_and_clear_bit(TMR_RUNNING_MPR
, &ifmsh
->timers_running
))
560 add_timer(&ifmsh
->mesh_path_root_timer
);
561 ieee80211_mesh_root_setup(ifmsh
);
565 void ieee80211_start_mesh(struct ieee80211_sub_if_data
*sdata
)
567 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
568 struct ieee80211_local
*local
= sdata
->local
;
570 local
->fif_other_bss
++;
571 /* mesh ifaces must set allmulti to forward mcast traffic */
572 atomic_inc(&local
->iff_allmultis
);
573 ieee80211_configure_filter(local
);
575 ifmsh
->mesh_cc_id
= 0; /* Disabled */
576 ifmsh
->mesh_sp_id
= 0; /* Neighbor Offset */
577 ifmsh
->mesh_auth_id
= 0; /* Disabled */
578 set_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
);
579 ieee80211_mesh_root_setup(ifmsh
);
580 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
581 sdata
->vif
.bss_conf
.beacon_int
= MESH_DEFAULT_BEACON_INTERVAL
;
582 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON
|
583 BSS_CHANGED_BEACON_ENABLED
|
584 BSS_CHANGED_BEACON_INT
);
587 void ieee80211_stop_mesh(struct ieee80211_sub_if_data
*sdata
)
589 struct ieee80211_local
*local
= sdata
->local
;
590 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
592 ifmsh
->mesh_id_len
= 0;
593 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BEACON_ENABLED
);
594 sta_info_flush(local
, NULL
);
596 del_timer_sync(&sdata
->u
.mesh
.housekeeping_timer
);
597 del_timer_sync(&sdata
->u
.mesh
.mesh_path_root_timer
);
599 * If the timer fired while we waited for it, it will have
600 * requeued the work. Now the work will be running again
601 * but will not rearm the timer again because it checks
602 * whether the interface is running, which, at this point,
605 cancel_work_sync(&sdata
->work
);
607 local
->fif_other_bss
--;
608 atomic_dec(&local
->iff_allmultis
);
609 ieee80211_configure_filter(local
);
612 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data
*sdata
,
614 struct ieee80211_mgmt
*mgmt
,
616 struct ieee80211_rx_status
*rx_status
)
618 struct ieee80211_local
*local
= sdata
->local
;
619 struct ieee802_11_elems elems
;
620 struct ieee80211_channel
*channel
;
624 enum ieee80211_band band
= rx_status
->band
;
626 /* ignore ProbeResp to foreign address */
627 if (stype
== IEEE80211_STYPE_PROBE_RESP
&&
628 compare_ether_addr(mgmt
->da
, sdata
->vif
.addr
))
631 baselen
= (u8
*) mgmt
->u
.probe_resp
.variable
- (u8
*) mgmt
;
635 ieee802_11_parse_elems(mgmt
->u
.probe_resp
.variable
, len
- baselen
,
638 /* ignore beacons from secure mesh peers if our security is off */
639 if (elems
.rsn_len
&& sdata
->u
.mesh
.security
== IEEE80211_MESH_SEC_NONE
)
642 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
643 freq
= ieee80211_channel_to_frequency(elems
.ds_params
[0], band
);
645 freq
= rx_status
->freq
;
647 channel
= ieee80211_get_channel(local
->hw
.wiphy
, freq
);
649 if (!channel
|| channel
->flags
& IEEE80211_CHAN_DISABLED
)
652 if (elems
.mesh_id
&& elems
.mesh_config
&&
653 mesh_matches_local(&elems
, sdata
)) {
654 supp_rates
= ieee80211_sta_get_rates(local
, &elems
, band
);
655 mesh_neighbour_update(mgmt
->sa
, supp_rates
, sdata
, &elems
);
659 static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data
*sdata
,
660 struct ieee80211_mgmt
*mgmt
,
662 struct ieee80211_rx_status
*rx_status
)
664 switch (mgmt
->u
.action
.category
) {
665 case WLAN_CATEGORY_MESH_ACTION
:
666 mesh_rx_plink_frame(sdata
, mgmt
, len
, rx_status
);
668 case WLAN_CATEGORY_MESH_PATH_SEL
:
669 mesh_rx_path_sel_frame(sdata
, mgmt
, len
);
674 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
677 struct ieee80211_rx_status
*rx_status
;
678 struct ieee80211_mgmt
*mgmt
;
681 rx_status
= IEEE80211_SKB_RXCB(skb
);
682 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
683 stype
= le16_to_cpu(mgmt
->frame_control
) & IEEE80211_FCTL_STYPE
;
686 case IEEE80211_STYPE_PROBE_RESP
:
687 case IEEE80211_STYPE_BEACON
:
688 ieee80211_mesh_rx_bcn_presp(sdata
, stype
, mgmt
, skb
->len
,
691 case IEEE80211_STYPE_ACTION
:
692 ieee80211_mesh_rx_mgmt_action(sdata
, mgmt
, skb
->len
, rx_status
);
697 void ieee80211_mesh_work(struct ieee80211_sub_if_data
*sdata
)
699 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
701 if (ifmsh
->preq_queue_len
&&
703 ifmsh
->last_preq
+ msecs_to_jiffies(ifmsh
->mshcfg
.dot11MeshHWMPpreqMinInterval
)))
704 mesh_path_start_discovery(sdata
);
706 if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE
, &ifmsh
->wrkq_flags
))
707 mesh_mpath_table_grow();
709 if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE
, &ifmsh
->wrkq_flags
))
710 mesh_mpp_table_grow();
712 if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING
, &ifmsh
->wrkq_flags
))
713 ieee80211_mesh_housekeeping(sdata
, ifmsh
);
715 if (test_and_clear_bit(MESH_WORK_ROOT
, &ifmsh
->wrkq_flags
))
716 ieee80211_mesh_rootpath(sdata
);
719 void ieee80211_mesh_notify_scan_completed(struct ieee80211_local
*local
)
721 struct ieee80211_sub_if_data
*sdata
;
724 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
)
725 if (ieee80211_vif_is_mesh(&sdata
->vif
))
726 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
730 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data
*sdata
)
732 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
734 setup_timer(&ifmsh
->housekeeping_timer
,
735 ieee80211_mesh_housekeeping_timer
,
736 (unsigned long) sdata
);
738 ifmsh
->accepting_plinks
= true;
741 atomic_set(&ifmsh
->mpaths
, 0);
742 mesh_rmc_init(sdata
);
743 ifmsh
->last_preq
= jiffies
;
744 /* Allocate all mesh structures when creating the first mesh interface. */
747 setup_timer(&ifmsh
->mesh_path_timer
,
748 ieee80211_mesh_path_timer
,
749 (unsigned long) sdata
);
750 setup_timer(&ifmsh
->mesh_path_root_timer
,
751 ieee80211_mesh_path_root_timer
,
752 (unsigned long) sdata
);
753 INIT_LIST_HEAD(&ifmsh
->preq_queue
.list
);
754 spin_lock_init(&ifmsh
->mesh_preq_queue_lock
);