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mac80211: initialise queue QoS parameters at hw start
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1/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007-2008 Johannes Berg <johannes@sipsolutions.net>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#ifndef IEEE80211_I_H
13#define IEEE80211_I_H
14
15#include <linux/kernel.h>
16#include <linux/device.h>
17#include <linux/if_ether.h>
18#include <linux/interrupt.h>
19#include <linux/list.h>
20#include <linux/netdevice.h>
21#include <linux/skbuff.h>
22#include <linux/workqueue.h>
23#include <linux/types.h>
24#include <linux/spinlock.h>
25#include <linux/etherdevice.h>
26#include <net/wireless.h>
27#include <net/iw_handler.h>
28#include <net/mac80211.h>
29#include "key.h"
30#include "sta_info.h"
31
32/* ieee80211.o internal definitions, etc. These are not included into
33 * low-level drivers. */
34
35struct ieee80211_local;
36
37/* Maximum number of broadcast/multicast frames to buffer when some of the
38 * associated stations are using power saving. */
39#define AP_MAX_BC_BUFFER 128
40
41/* Maximum number of frames buffered to all STAs, including multicast frames.
42 * Note: increasing this limit increases the potential memory requirement. Each
43 * frame can be up to about 2 kB long. */
44#define TOTAL_MAX_TX_BUFFER 512
45
46/* Required encryption head and tailroom */
47#define IEEE80211_ENCRYPT_HEADROOM 8
48#define IEEE80211_ENCRYPT_TAILROOM 12
49
50/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
51 * reception of at least three fragmented frames. This limit can be increased
52 * by changing this define, at the cost of slower frame reassembly and
53 * increased memory use (about 2 kB of RAM per entry). */
54#define IEEE80211_FRAGMENT_MAX 4
55
56/*
57 * Time after which we ignore scan results and no longer report/use
58 * them in any way.
59 */
60#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
61
62struct ieee80211_fragment_entry {
63 unsigned long first_frag_time;
64 unsigned int seq;
65 unsigned int rx_queue;
66 unsigned int last_frag;
67 unsigned int extra_len;
68 struct sk_buff_head skb_list;
69 int ccmp; /* Whether fragments were encrypted with CCMP */
70 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
71};
72
73
74struct ieee80211_sta_bss {
75 struct list_head list;
76 struct ieee80211_sta_bss *hnext;
77 size_t ssid_len;
78
79 atomic_t users;
80
81 u8 bssid[ETH_ALEN];
82 u8 ssid[IEEE80211_MAX_SSID_LEN];
83 u8 dtim_period;
84 u16 capability; /* host byte order */
85 enum ieee80211_band band;
86 int freq;
87 int signal, noise, qual;
88 u8 *ies; /* all information elements from the last Beacon or Probe
89 * Response frames; note Beacon frame is not allowed to
90 * override values from Probe Response */
91 size_t ies_len;
92 bool wmm_used;
93#ifdef CONFIG_MAC80211_MESH
94 u8 *mesh_id;
95 size_t mesh_id_len;
96 u8 *mesh_cfg;
97#endif
98#define IEEE80211_MAX_SUPP_RATES 32
99 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
100 size_t supp_rates_len;
101 u64 timestamp;
102 int beacon_int;
103
104 unsigned long last_probe_resp;
105 unsigned long last_update;
106
107 /* during assocation, we save an ERP value from a probe response so
108 * that we can feed ERP info to the driver when handling the
109 * association completes. these fields probably won't be up-to-date
110 * otherwise, you probably don't want to use them. */
111 int has_erp_value;
112 u8 erp_value;
113};
114
115static inline u8 *bss_mesh_cfg(struct ieee80211_sta_bss *bss)
116{
117#ifdef CONFIG_MAC80211_MESH
118 return bss->mesh_cfg;
119#endif
120 return NULL;
121}
122
123static inline u8 *bss_mesh_id(struct ieee80211_sta_bss *bss)
124{
125#ifdef CONFIG_MAC80211_MESH
126 return bss->mesh_id;
127#endif
128 return NULL;
129}
130
131static inline u8 bss_mesh_id_len(struct ieee80211_sta_bss *bss)
132{
133#ifdef CONFIG_MAC80211_MESH
134 return bss->mesh_id_len;
135#endif
136 return 0;
137}
138
139
140typedef unsigned __bitwise__ ieee80211_tx_result;
141#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
142#define TX_DROP ((__force ieee80211_tx_result) 1u)
143#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
144
145#define IEEE80211_TX_FRAGMENTED BIT(0)
146#define IEEE80211_TX_UNICAST BIT(1)
147#define IEEE80211_TX_PS_BUFFERED BIT(2)
148#define IEEE80211_TX_PROBE_LAST_FRAG BIT(3)
149
150struct ieee80211_tx_data {
151 struct sk_buff *skb;
152 struct net_device *dev;
153 struct ieee80211_local *local;
154 struct ieee80211_sub_if_data *sdata;
155 struct sta_info *sta;
156 struct ieee80211_key *key;
157
158 struct ieee80211_channel *channel;
159 s8 rate_idx;
160 /* use this rate (if set) for last fragment; rate can
161 * be set to lower rate for the first fragments, e.g.,
162 * when using CTS protection with IEEE 802.11g. */
163 s8 last_frag_rate_idx;
164
165 /* Extra fragments (in addition to the first fragment
166 * in skb) */
167 struct sk_buff **extra_frag;
168 int num_extra_frag;
169
170 u16 ethertype;
171 unsigned int flags;
172};
173
174
175typedef unsigned __bitwise__ ieee80211_rx_result;
176#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
177#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
178#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
179#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
180
181#define IEEE80211_RX_IN_SCAN BIT(0)
182/* frame is destined to interface currently processed (incl. multicast frames) */
183#define IEEE80211_RX_RA_MATCH BIT(1)
184#define IEEE80211_RX_AMSDU BIT(2)
185#define IEEE80211_RX_CMNTR_REPORTED BIT(3)
186#define IEEE80211_RX_FRAGMENTED BIT(4)
187
188struct ieee80211_rx_data {
189 struct sk_buff *skb;
190 struct net_device *dev;
191 struct ieee80211_local *local;
192 struct ieee80211_sub_if_data *sdata;
193 struct sta_info *sta;
194 struct ieee80211_key *key;
195 struct ieee80211_rx_status *status;
196 struct ieee80211_rate *rate;
197
198 u16 ethertype;
199 unsigned int flags;
200 int sent_ps_buffered;
201 int queue;
202 u32 tkip_iv32;
203 u16 tkip_iv16;
204};
205
206struct ieee80211_tx_stored_packet {
207 struct sk_buff *skb;
208 struct sk_buff **extra_frag;
209 s8 last_frag_rate_idx;
210 int num_extra_frag;
211 bool last_frag_rate_ctrl_probe;
212};
213
214struct beacon_data {
215 u8 *head, *tail;
216 int head_len, tail_len;
217 int dtim_period;
218};
219
220struct ieee80211_if_ap {
221 struct beacon_data *beacon;
222
223 struct list_head vlans;
224
225 u8 ssid[IEEE80211_MAX_SSID_LEN];
226 size_t ssid_len;
227
228 /* yes, this looks ugly, but guarantees that we can later use
229 * bitmap_empty :)
230 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
231 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
232 struct sk_buff_head ps_bc_buf;
233 atomic_t num_sta_ps; /* number of stations in PS mode */
234 int dtim_count;
235 int num_beacons; /* number of TXed beacon frames for this BSS */
236};
237
238struct ieee80211_if_wds {
239 struct sta_info *sta;
240 u8 remote_addr[ETH_ALEN];
241};
242
243struct ieee80211_if_vlan {
244 struct list_head list;
245};
246
247struct mesh_stats {
248 __u32 fwded_frames; /* Mesh forwarded frames */
249 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
250 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
251 atomic_t estab_plinks;
252};
253
254#define PREQ_Q_F_START 0x1
255#define PREQ_Q_F_REFRESH 0x2
256struct mesh_preq_queue {
257 struct list_head list;
258 u8 dst[ETH_ALEN];
259 u8 flags;
260};
261
262struct mesh_config {
263 /* Timeouts in ms */
264 /* Mesh plink management parameters */
265 u16 dot11MeshRetryTimeout;
266 u16 dot11MeshConfirmTimeout;
267 u16 dot11MeshHoldingTimeout;
268 u16 dot11MeshMaxPeerLinks;
269 u8 dot11MeshMaxRetries;
270 u8 dot11MeshTTL;
271 bool auto_open_plinks;
272 /* HWMP parameters */
273 u8 dot11MeshHWMPmaxPREQretries;
274 u32 path_refresh_time;
275 u16 min_discovery_timeout;
276 u32 dot11MeshHWMPactivePathTimeout;
277 u16 dot11MeshHWMPpreqMinInterval;
278 u16 dot11MeshHWMPnetDiameterTraversalTime;
279};
280
281
282/* flags used in struct ieee80211_if_sta.flags */
283#define IEEE80211_STA_SSID_SET BIT(0)
284#define IEEE80211_STA_BSSID_SET BIT(1)
285#define IEEE80211_STA_PREV_BSSID_SET BIT(2)
286#define IEEE80211_STA_AUTHENTICATED BIT(3)
287#define IEEE80211_STA_ASSOCIATED BIT(4)
288#define IEEE80211_STA_PROBEREQ_POLL BIT(5)
289#define IEEE80211_STA_CREATE_IBSS BIT(6)
290#define IEEE80211_STA_MIXED_CELL BIT(7)
291#define IEEE80211_STA_WMM_ENABLED BIT(8)
292#define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
293#define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
294#define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
295#define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
296/* flags for MLME request*/
297#define IEEE80211_STA_REQ_SCAN 0
298#define IEEE80211_STA_REQ_DIRECT_PROBE 1
299#define IEEE80211_STA_REQ_AUTH 2
300#define IEEE80211_STA_REQ_RUN 3
301
302/* flags used for setting mlme state */
303enum ieee80211_sta_mlme_state {
304 IEEE80211_STA_MLME_DISABLED,
305 IEEE80211_STA_MLME_DIRECT_PROBE,
306 IEEE80211_STA_MLME_AUTHENTICATE,
307 IEEE80211_STA_MLME_ASSOCIATE,
308 IEEE80211_STA_MLME_ASSOCIATED,
309 IEEE80211_STA_MLME_IBSS_SEARCH,
310 IEEE80211_STA_MLME_IBSS_JOINED,
311 IEEE80211_STA_MLME_MESH_UP
312};
313
314/* bitfield of allowed auth algs */
315#define IEEE80211_AUTH_ALG_OPEN BIT(0)
316#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
317#define IEEE80211_AUTH_ALG_LEAP BIT(2)
318
319struct ieee80211_if_sta {
320 struct timer_list timer;
321 struct work_struct work;
322 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
323 u8 ssid[IEEE80211_MAX_SSID_LEN];
324 enum ieee80211_sta_mlme_state state;
325 size_t ssid_len;
326 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
327 size_t scan_ssid_len;
328#ifdef CONFIG_MAC80211_MESH
329 struct timer_list mesh_path_timer;
330 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
331 size_t mesh_id_len;
332 /* Active Path Selection Protocol Identifier */
333 u8 mesh_pp_id[4];
334 /* Active Path Selection Metric Identifier */
335 u8 mesh_pm_id[4];
336 /* Congestion Control Mode Identifier */
337 u8 mesh_cc_id[4];
338 /* Local mesh Destination Sequence Number */
339 u32 dsn;
340 /* Last used PREQ ID */
341 u32 preq_id;
342 atomic_t mpaths;
343 /* Timestamp of last DSN update */
344 unsigned long last_dsn_update;
345 /* Timestamp of last DSN sent */
346 unsigned long last_preq;
347 struct mesh_rmc *rmc;
348 spinlock_t mesh_preq_queue_lock;
349 struct mesh_preq_queue preq_queue;
350 int preq_queue_len;
351 struct mesh_stats mshstats;
352 struct mesh_config mshcfg;
353 u32 mesh_seqnum;
354 bool accepting_plinks;
355#endif
356 u16 aid;
357 u16 ap_capab, capab;
358 u8 *extra_ie; /* to be added to the end of AssocReq */
359 size_t extra_ie_len;
360
361 /* The last AssocReq/Resp IEs */
362 u8 *assocreq_ies, *assocresp_ies;
363 size_t assocreq_ies_len, assocresp_ies_len;
364
365 struct sk_buff_head skb_queue;
366
367 int assoc_scan_tries; /* number of scans done pre-association */
368 int direct_probe_tries; /* retries for direct probes */
369 int auth_tries; /* retries for auth req */
370 int assoc_tries; /* retries for assoc req */
371
372 unsigned long request;
373
374 unsigned long last_probe;
375
376 unsigned int flags;
377
378 unsigned int auth_algs; /* bitfield of allowed auth algs */
379 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
380 int auth_transaction;
381
382 unsigned long ibss_join_req;
383 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
384 u32 supp_rates_bits[IEEE80211_NUM_BANDS];
385
386 int wmm_last_param_set;
387 int num_beacons; /* number of TXed beacon frames by this STA */
388};
389
390static inline void ieee80211_if_sta_set_mesh_id(struct ieee80211_if_sta *ifsta,
391 u8 mesh_id_len, u8 *mesh_id)
392{
393#ifdef CONFIG_MAC80211_MESH
394 ifsta->mesh_id_len = mesh_id_len;
395 memcpy(ifsta->mesh_id, mesh_id, mesh_id_len);
396#endif
397}
398
399#ifdef CONFIG_MAC80211_MESH
400#define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
401 do { (sta)->mshstats.name++; } while (0)
402#else
403#define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
404 do { } while (0)
405#endif
406
407/* flags used in struct ieee80211_sub_if_data.flags */
408#define IEEE80211_SDATA_ALLMULTI BIT(0)
409#define IEEE80211_SDATA_PROMISC BIT(1)
410#define IEEE80211_SDATA_USERSPACE_MLME BIT(2)
411#define IEEE80211_SDATA_OPERATING_GMODE BIT(3)
412struct ieee80211_sub_if_data {
413 struct list_head list;
414
415 struct wireless_dev wdev;
416
417 /* keys */
418 struct list_head key_list;
419
420 struct net_device *dev;
421 struct ieee80211_local *local;
422
423 unsigned int flags;
424
425 int drop_unencrypted;
426
427 /*
428 * basic rates of this AP or the AP we're associated to
429 */
430 u64 basic_rates;
431
432 /* Fragment table for host-based reassembly */
433 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
434 unsigned int fragment_next;
435
436#define NUM_DEFAULT_KEYS 4
437 struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
438 struct ieee80211_key *default_key;
439
440 /* BSS configuration for this interface. */
441 struct ieee80211_bss_conf bss_conf;
442
443 /*
444 * AP this belongs to: self in AP mode and
445 * corresponding AP in VLAN mode, NULL for
446 * all others (might be needed later in IBSS)
447 */
448 struct ieee80211_if_ap *bss;
449
450 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
451 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
452
453 union {
454 struct ieee80211_if_ap ap;
455 struct ieee80211_if_wds wds;
456 struct ieee80211_if_vlan vlan;
457 struct ieee80211_if_sta sta;
458 u32 mntr_flags;
459 } u;
460
461#ifdef CONFIG_MAC80211_DEBUGFS
462 struct dentry *debugfsdir;
463 union {
464 struct {
465 struct dentry *drop_unencrypted;
466 struct dentry *state;
467 struct dentry *bssid;
468 struct dentry *prev_bssid;
469 struct dentry *ssid_len;
470 struct dentry *aid;
471 struct dentry *ap_capab;
472 struct dentry *capab;
473 struct dentry *extra_ie_len;
474 struct dentry *auth_tries;
475 struct dentry *assoc_tries;
476 struct dentry *auth_algs;
477 struct dentry *auth_alg;
478 struct dentry *auth_transaction;
479 struct dentry *flags;
480 struct dentry *num_beacons_sta;
481 struct dentry *force_unicast_rateidx;
482 struct dentry *max_ratectrl_rateidx;
483 } sta;
484 struct {
485 struct dentry *drop_unencrypted;
486 struct dentry *num_sta_ps;
487 struct dentry *dtim_count;
488 struct dentry *num_beacons;
489 struct dentry *force_unicast_rateidx;
490 struct dentry *max_ratectrl_rateidx;
491 struct dentry *num_buffered_multicast;
492 } ap;
493 struct {
494 struct dentry *drop_unencrypted;
495 struct dentry *peer;
496 struct dentry *force_unicast_rateidx;
497 struct dentry *max_ratectrl_rateidx;
498 } wds;
499 struct {
500 struct dentry *drop_unencrypted;
501 struct dentry *force_unicast_rateidx;
502 struct dentry *max_ratectrl_rateidx;
503 } vlan;
504 struct {
505 struct dentry *mode;
506 } monitor;
507 } debugfs;
508 struct {
509 struct dentry *default_key;
510 } common_debugfs;
511
512#ifdef CONFIG_MAC80211_MESH
513 struct dentry *mesh_stats_dir;
514 struct {
515 struct dentry *fwded_frames;
516 struct dentry *dropped_frames_ttl;
517 struct dentry *dropped_frames_no_route;
518 struct dentry *estab_plinks;
519 struct timer_list mesh_path_timer;
520 } mesh_stats;
521
522 struct dentry *mesh_config_dir;
523 struct {
524 struct dentry *dot11MeshRetryTimeout;
525 struct dentry *dot11MeshConfirmTimeout;
526 struct dentry *dot11MeshHoldingTimeout;
527 struct dentry *dot11MeshMaxRetries;
528 struct dentry *dot11MeshTTL;
529 struct dentry *auto_open_plinks;
530 struct dentry *dot11MeshMaxPeerLinks;
531 struct dentry *dot11MeshHWMPactivePathTimeout;
532 struct dentry *dot11MeshHWMPpreqMinInterval;
533 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
534 struct dentry *dot11MeshHWMPmaxPREQretries;
535 struct dentry *path_refresh_time;
536 struct dentry *min_discovery_timeout;
537 } mesh_config;
538#endif
539
540#endif
541 /* must be last, dynamically sized area in this! */
542 struct ieee80211_vif vif;
543};
544
545static inline
546struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
547{
548 return container_of(p, struct ieee80211_sub_if_data, vif);
549}
550
551enum {
552 IEEE80211_RX_MSG = 1,
553 IEEE80211_TX_STATUS_MSG = 2,
554 IEEE80211_DELBA_MSG = 3,
555 IEEE80211_ADDBA_MSG = 4,
556};
557
558/* maximum number of hardware queues we support. */
559#define QD_MAX_QUEUES (IEEE80211_MAX_AMPDU_QUEUES + IEEE80211_MAX_QUEUES)
560
561struct ieee80211_local {
562 /* embed the driver visible part.
563 * don't cast (use the static inlines below), but we keep
564 * it first anyway so they become a no-op */
565 struct ieee80211_hw hw;
566
567 const struct ieee80211_ops *ops;
568
569 unsigned long queue_pool[BITS_TO_LONGS(QD_MAX_QUEUES)];
570
571 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
572 int open_count;
573 int monitors, cooked_mntrs;
574 /* number of interfaces with corresponding FIF_ flags */
575 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
576 unsigned int filter_flags; /* FIF_* */
577 struct iw_statistics wstats;
578 u8 wstats_flags;
579 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
580 int tx_headroom; /* required headroom for hardware/radiotap */
581
582 /* Tasklet and skb queue to process calls from IRQ mode. All frames
583 * added to skb_queue will be processed, but frames in
584 * skb_queue_unreliable may be dropped if the total length of these
585 * queues increases over the limit. */
586#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
587 struct tasklet_struct tasklet;
588 struct sk_buff_head skb_queue;
589 struct sk_buff_head skb_queue_unreliable;
590
591 /* Station data */
592 /*
593 * The lock only protects the list, hash, timer and counter
594 * against manipulation, reads are done in RCU. Additionally,
595 * the lock protects each BSS's TIM bitmap.
596 */
597 spinlock_t sta_lock;
598 unsigned long num_sta;
599 struct list_head sta_list;
600 struct list_head sta_flush_list;
601 struct work_struct sta_flush_work;
602 struct sta_info *sta_hash[STA_HASH_SIZE];
603 struct timer_list sta_cleanup;
604
605 unsigned long queues_pending[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
606 unsigned long queues_pending_run[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
607 struct ieee80211_tx_stored_packet pending_packet[IEEE80211_MAX_QUEUES];
608 struct tasklet_struct tx_pending_tasklet;
609
610 /* number of interfaces with corresponding IFF_ flags */
611 atomic_t iff_allmultis, iff_promiscs;
612
613 struct rate_control_ref *rate_ctrl;
614
615 int rts_threshold;
616 int fragmentation_threshold;
617 int short_retry_limit; /* dot11ShortRetryLimit */
618 int long_retry_limit; /* dot11LongRetryLimit */
619
620 struct crypto_blkcipher *wep_tx_tfm;
621 struct crypto_blkcipher *wep_rx_tfm;
622 u32 wep_iv;
623
624 int bridge_packets; /* bridge packets between associated stations and
625 * deliver multicast frames both back to wireless
626 * media and to the local net stack */
627
628 struct list_head interfaces;
629
630 /*
631 * Key lock, protects sdata's key_list and sta_info's
632 * key pointers (write access, they're RCU.)
633 */
634 spinlock_t key_lock;
635
636
637 bool sta_sw_scanning;
638 bool sta_hw_scanning;
639 int scan_channel_idx;
640 enum ieee80211_band scan_band;
641
642 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
643 unsigned long last_scan_completed;
644 struct delayed_work scan_work;
645 struct ieee80211_sub_if_data *scan_sdata;
646 struct ieee80211_channel *oper_channel, *scan_channel;
647 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
648 size_t scan_ssid_len;
649 struct list_head sta_bss_list;
650 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
651 spinlock_t sta_bss_lock;
652
653 /* SNMP counters */
654 /* dot11CountersTable */
655 u32 dot11TransmittedFragmentCount;
656 u32 dot11MulticastTransmittedFrameCount;
657 u32 dot11FailedCount;
658 u32 dot11RetryCount;
659 u32 dot11MultipleRetryCount;
660 u32 dot11FrameDuplicateCount;
661 u32 dot11ReceivedFragmentCount;
662 u32 dot11MulticastReceivedFrameCount;
663 u32 dot11TransmittedFrameCount;
664 u32 dot11WEPUndecryptableCount;
665
666#ifdef CONFIG_MAC80211_LEDS
667 int tx_led_counter, rx_led_counter;
668 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
669 char tx_led_name[32], rx_led_name[32],
670 assoc_led_name[32], radio_led_name[32];
671#endif
672
673#ifdef CONFIG_MAC80211_DEBUGFS
674 struct work_struct sta_debugfs_add;
675#endif
676
677#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
678 /* TX/RX handler statistics */
679 unsigned int tx_handlers_drop;
680 unsigned int tx_handlers_queued;
681 unsigned int tx_handlers_drop_unencrypted;
682 unsigned int tx_handlers_drop_fragment;
683 unsigned int tx_handlers_drop_wep;
684 unsigned int tx_handlers_drop_not_assoc;
685 unsigned int tx_handlers_drop_unauth_port;
686 unsigned int rx_handlers_drop;
687 unsigned int rx_handlers_queued;
688 unsigned int rx_handlers_drop_nullfunc;
689 unsigned int rx_handlers_drop_defrag;
690 unsigned int rx_handlers_drop_short;
691 unsigned int rx_handlers_drop_passive_scan;
692 unsigned int tx_expand_skb_head;
693 unsigned int tx_expand_skb_head_cloned;
694 unsigned int rx_expand_skb_head;
695 unsigned int rx_expand_skb_head2;
696 unsigned int rx_handlers_fragments;
697 unsigned int tx_status_drop;
698#define I802_DEBUG_INC(c) (c)++
699#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
700#define I802_DEBUG_INC(c) do { } while (0)
701#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
702
703
704 int total_ps_buffered; /* total number of all buffered unicast and
705 * multicast packets for power saving stations
706 */
707 int wifi_wme_noack_test;
708 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
709
710#ifdef CONFIG_MAC80211_DEBUGFS
711 struct local_debugfsdentries {
712 struct dentry *frequency;
713 struct dentry *antenna_sel_tx;
714 struct dentry *antenna_sel_rx;
715 struct dentry *bridge_packets;
716 struct dentry *rts_threshold;
717 struct dentry *fragmentation_threshold;
718 struct dentry *short_retry_limit;
719 struct dentry *long_retry_limit;
720 struct dentry *total_ps_buffered;
721 struct dentry *wep_iv;
722 struct dentry *statistics;
723 struct local_debugfsdentries_statsdentries {
724 struct dentry *transmitted_fragment_count;
725 struct dentry *multicast_transmitted_frame_count;
726 struct dentry *failed_count;
727 struct dentry *retry_count;
728 struct dentry *multiple_retry_count;
729 struct dentry *frame_duplicate_count;
730 struct dentry *received_fragment_count;
731 struct dentry *multicast_received_frame_count;
732 struct dentry *transmitted_frame_count;
733 struct dentry *wep_undecryptable_count;
734 struct dentry *num_scans;
735#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
736 struct dentry *tx_handlers_drop;
737 struct dentry *tx_handlers_queued;
738 struct dentry *tx_handlers_drop_unencrypted;
739 struct dentry *tx_handlers_drop_fragment;
740 struct dentry *tx_handlers_drop_wep;
741 struct dentry *tx_handlers_drop_not_assoc;
742 struct dentry *tx_handlers_drop_unauth_port;
743 struct dentry *rx_handlers_drop;
744 struct dentry *rx_handlers_queued;
745 struct dentry *rx_handlers_drop_nullfunc;
746 struct dentry *rx_handlers_drop_defrag;
747 struct dentry *rx_handlers_drop_short;
748 struct dentry *rx_handlers_drop_passive_scan;
749 struct dentry *tx_expand_skb_head;
750 struct dentry *tx_expand_skb_head_cloned;
751 struct dentry *rx_expand_skb_head;
752 struct dentry *rx_expand_skb_head2;
753 struct dentry *rx_handlers_fragments;
754 struct dentry *tx_status_drop;
755#endif
756 struct dentry *dot11ACKFailureCount;
757 struct dentry *dot11RTSFailureCount;
758 struct dentry *dot11FCSErrorCount;
759 struct dentry *dot11RTSSuccessCount;
760 } stats;
761 struct dentry *stations;
762 struct dentry *keys;
763 } debugfs;
764#endif
765};
766
767static inline struct ieee80211_sub_if_data *
768IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
769{
770 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
771
772 BUG_ON(!local || local->mdev == dev);
773
774 return netdev_priv(dev);
775}
776
777/* this struct represents 802.11n's RA/TID combination */
778struct ieee80211_ra_tid {
779 u8 ra[ETH_ALEN];
780 u16 tid;
781};
782
783/* Parsed Information Elements */
784struct ieee802_11_elems {
785 u8 *ie_start;
786 size_t total_len;
787
788 /* pointers to IEs */
789 u8 *ssid;
790 u8 *supp_rates;
791 u8 *fh_params;
792 u8 *ds_params;
793 u8 *cf_params;
794 u8 *tim;
795 u8 *ibss_params;
796 u8 *challenge;
797 u8 *wpa;
798 u8 *rsn;
799 u8 *erp_info;
800 u8 *ext_supp_rates;
801 u8 *wmm_info;
802 u8 *wmm_param;
803 u8 *ht_cap_elem;
804 u8 *ht_info_elem;
805 u8 *mesh_config;
806 u8 *mesh_id;
807 u8 *peer_link;
808 u8 *preq;
809 u8 *prep;
810 u8 *perr;
811 u8 *ch_switch_elem;
812 u8 *country_elem;
813 u8 *pwr_constr_elem;
814 u8 *quiet_elem; /* first quite element */
815
816 /* length of them, respectively */
817 u8 ssid_len;
818 u8 supp_rates_len;
819 u8 fh_params_len;
820 u8 ds_params_len;
821 u8 cf_params_len;
822 u8 tim_len;
823 u8 ibss_params_len;
824 u8 challenge_len;
825 u8 wpa_len;
826 u8 rsn_len;
827 u8 erp_info_len;
828 u8 ext_supp_rates_len;
829 u8 wmm_info_len;
830 u8 wmm_param_len;
831 u8 ht_cap_elem_len;
832 u8 ht_info_elem_len;
833 u8 mesh_config_len;
834 u8 mesh_id_len;
835 u8 peer_link_len;
836 u8 preq_len;
837 u8 prep_len;
838 u8 perr_len;
839 u8 ch_switch_elem_len;
840 u8 country_elem_len;
841 u8 pwr_constr_elem_len;
842 u8 quiet_elem_len;
843 u8 num_of_quiet_elem; /* can be more the one */
844};
845
846static inline struct ieee80211_local *hw_to_local(
847 struct ieee80211_hw *hw)
848{
849 return container_of(hw, struct ieee80211_local, hw);
850}
851
852static inline struct ieee80211_hw *local_to_hw(
853 struct ieee80211_local *local)
854{
855 return &local->hw;
856}
857
858struct sta_attribute {
859 struct attribute attr;
860 ssize_t (*show)(const struct sta_info *, char *buf);
861 ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
862};
863
864static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
865{
866 return compare_ether_addr(raddr, addr) == 0 ||
867 is_broadcast_ether_addr(raddr);
868}
869
870
871/* ieee80211.c */
872int ieee80211_hw_config(struct ieee80211_local *local);
873int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
874void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
875u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
876 struct ieee80211_ht_info *req_ht_cap,
877 struct ieee80211_ht_bss_info *req_bss_cap);
878
879/* ieee80211_ioctl.c */
880extern const struct iw_handler_def ieee80211_iw_handler_def;
881int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
882
883/* ieee80211_sta.c */
884void ieee80211_sta_timer(unsigned long data);
885void ieee80211_sta_work(struct work_struct *work);
886void ieee80211_sta_scan_work(struct work_struct *work);
887void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
888 struct ieee80211_rx_status *rx_status);
889int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
890int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
891int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
892int ieee80211_sta_req_scan(struct ieee80211_sub_if_data *sdata, u8 *ssid, size_t ssid_len);
893void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
894 struct ieee80211_if_sta *ifsta);
895int ieee80211_sta_scan_results(struct ieee80211_local *local,
896 struct iw_request_info *info,
897 char *buf, size_t len);
898ieee80211_rx_result ieee80211_sta_rx_scan(
899 struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
900 struct ieee80211_rx_status *rx_status);
901void ieee80211_rx_bss_list_init(struct ieee80211_local *local);
902void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local);
903int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len);
904struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
905 struct sk_buff *skb, u8 *bssid,
906 u8 *addr, u64 supp_rates);
907int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
908int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
909void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
910 u32 changed);
911u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
912int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
913 struct ieee80211_ht_info *ht_info);
914int ieee80211_ht_addt_info_ie_to_ht_bss_info(
915 struct ieee80211_ht_addt_info *ht_add_info_ie,
916 struct ieee80211_ht_bss_info *bss_info);
917void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata, const u8 *da,
918 u16 tid, u8 dialog_token, u16 start_seq_num,
919 u16 agg_size, u16 timeout);
920void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, const u8 *da, u16 tid,
921 u16 initiator, u16 reason_code);
922void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
923
924void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
925 u16 tid, u16 initiator, u16 reason);
926void sta_addba_resp_timer_expired(unsigned long data);
927void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8 *addr);
928u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
929 struct ieee802_11_elems *elems,
930 enum ieee80211_band band);
931void ieee80211_sta_tx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
932 int encrypt);
933void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
934 u8 *ssid, size_t ssid_len);
935void ieee802_11_parse_elems(u8 *start, size_t len,
936 struct ieee802_11_elems *elems);
937void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
938int ieee80211_sta_start_scan(struct ieee80211_sub_if_data *scan_sdata,
939 u8 *ssid, size_t ssid_len);
940struct ieee80211_sta_bss *
941ieee80211_bss_info_update(struct ieee80211_local *local,
942 struct ieee80211_rx_status *rx_status,
943 struct ieee80211_mgmt *mgmt,
944 size_t len,
945 struct ieee802_11_elems *elems,
946 int freq, bool beacon);
947struct ieee80211_sta_bss *
948ieee80211_rx_bss_add(struct ieee80211_local *local, u8 *bssid, int freq,
949 u8 *ssid, u8 ssid_len);
950struct ieee80211_sta_bss *
951ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
952 u8 *ssid, u8 ssid_len);
953void ieee80211_rx_bss_put(struct ieee80211_local *local,
954 struct ieee80211_sta_bss *bss);
955
956#ifdef CONFIG_MAC80211_MESH
957void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
958#else
959static inline void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
960{}
961#endif
962
963/* interface handling */
964void ieee80211_if_setup(struct net_device *dev);
965int ieee80211_if_add(struct ieee80211_local *local, const char *name,
966 struct net_device **new_dev, enum ieee80211_if_types type,
967 struct vif_params *params);
968int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
969 enum ieee80211_if_types type);
970void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
971void ieee80211_remove_interfaces(struct ieee80211_local *local);
972
973/* tx handling */
974void ieee80211_clear_tx_pending(struct ieee80211_local *local);
975void ieee80211_tx_pending(unsigned long data);
976int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
977int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
978int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
979
980/* utility functions/constants */
981extern void *mac80211_wiphy_privid; /* for wiphy privid */
982extern const unsigned char rfc1042_header[6];
983extern const unsigned char bridge_tunnel_header[6];
984u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
985 enum ieee80211_if_types type);
986int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
987 int rate, int erp, int short_preamble);
988void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
989 struct ieee80211_hdr *hdr);
990void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
991
992#ifdef CONFIG_MAC80211_NOINLINE
993#define debug_noinline noinline
994#else
995#define debug_noinline
996#endif
997
998#endif /* IEEE80211_I_H */
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