mac80211: Fix debugfs file add/del for netdev
[deliverable/linux.git] / net / mac80211 / ieee80211_i.h
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
35 #ifndef ETH_P_PAE
36 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
37 #endif /* ETH_P_PAE */
38
39 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
40
41 #define IEEE80211_FC(type, subtype) cpu_to_le16(type | subtype)
42
43 struct ieee80211_local;
44
45 /* Maximum number of broadcast/multicast frames to buffer when some of the
46 * associated stations are using power saving. */
47 #define AP_MAX_BC_BUFFER 128
48
49 /* Maximum number of frames buffered to all STAs, including multicast frames.
50 * Note: increasing this limit increases the potential memory requirement. Each
51 * frame can be up to about 2 kB long. */
52 #define TOTAL_MAX_TX_BUFFER 512
53
54 /* Required encryption head and tailroom */
55 #define IEEE80211_ENCRYPT_HEADROOM 8
56 #define IEEE80211_ENCRYPT_TAILROOM 12
57
58 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
59 * reception of at least three fragmented frames. This limit can be increased
60 * by changing this define, at the cost of slower frame reassembly and
61 * increased memory use (about 2 kB of RAM per entry). */
62 #define IEEE80211_FRAGMENT_MAX 4
63
64 struct ieee80211_fragment_entry {
65 unsigned long first_frag_time;
66 unsigned int seq;
67 unsigned int rx_queue;
68 unsigned int last_frag;
69 unsigned int extra_len;
70 struct sk_buff_head skb_list;
71 int ccmp; /* Whether fragments were encrypted with CCMP */
72 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
73 };
74
75
76 struct ieee80211_sta_bss {
77 struct list_head list;
78 struct ieee80211_sta_bss *hnext;
79 size_t ssid_len;
80
81 atomic_t users;
82
83 u8 bssid[ETH_ALEN];
84 u8 ssid[IEEE80211_MAX_SSID_LEN];
85 u8 dtim_period;
86 u16 capability; /* host byte order */
87 enum ieee80211_band band;
88 int freq;
89 int signal, noise, qual;
90 u8 *wpa_ie;
91 size_t wpa_ie_len;
92 u8 *rsn_ie;
93 size_t rsn_ie_len;
94 u8 *wmm_ie;
95 size_t wmm_ie_len;
96 u8 *ht_ie;
97 size_t ht_ie_len;
98 u8 *ht_add_ie;
99 size_t ht_add_ie_len;
100 #ifdef CONFIG_MAC80211_MESH
101 u8 *mesh_id;
102 size_t mesh_id_len;
103 u8 *mesh_cfg;
104 #endif
105 #define IEEE80211_MAX_SUPP_RATES 32
106 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
107 size_t supp_rates_len;
108 u64 timestamp;
109 int beacon_int;
110
111 bool probe_resp;
112 unsigned long last_update;
113
114 /* during assocation, we save an ERP value from a probe response so
115 * that we can feed ERP info to the driver when handling the
116 * association completes. these fields probably won't be up-to-date
117 * otherwise, you probably don't want to use them. */
118 int has_erp_value;
119 u8 erp_value;
120 };
121
122 static inline u8 *bss_mesh_cfg(struct ieee80211_sta_bss *bss)
123 {
124 #ifdef CONFIG_MAC80211_MESH
125 return bss->mesh_cfg;
126 #endif
127 return NULL;
128 }
129
130 static inline u8 *bss_mesh_id(struct ieee80211_sta_bss *bss)
131 {
132 #ifdef CONFIG_MAC80211_MESH
133 return bss->mesh_id;
134 #endif
135 return NULL;
136 }
137
138 static inline u8 bss_mesh_id_len(struct ieee80211_sta_bss *bss)
139 {
140 #ifdef CONFIG_MAC80211_MESH
141 return bss->mesh_id_len;
142 #endif
143 return 0;
144 }
145
146
147 typedef unsigned __bitwise__ ieee80211_tx_result;
148 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
149 #define TX_DROP ((__force ieee80211_tx_result) 1u)
150 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
151
152 #define IEEE80211_TX_FRAGMENTED BIT(0)
153 #define IEEE80211_TX_UNICAST BIT(1)
154 #define IEEE80211_TX_PS_BUFFERED BIT(2)
155 #define IEEE80211_TX_PROBE_LAST_FRAG BIT(3)
156
157 struct ieee80211_tx_data {
158 struct sk_buff *skb;
159 struct net_device *dev;
160 struct ieee80211_local *local;
161 struct ieee80211_sub_if_data *sdata;
162 struct sta_info *sta;
163 struct ieee80211_key *key;
164
165 struct ieee80211_channel *channel;
166 s8 rate_idx;
167 /* use this rate (if set) for last fragment; rate can
168 * be set to lower rate for the first fragments, e.g.,
169 * when using CTS protection with IEEE 802.11g. */
170 s8 last_frag_rate_idx;
171
172 /* Extra fragments (in addition to the first fragment
173 * in skb) */
174 struct sk_buff **extra_frag;
175 int num_extra_frag;
176
177 u16 fc, ethertype;
178 unsigned int flags;
179 };
180
181
182 typedef unsigned __bitwise__ ieee80211_rx_result;
183 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
184 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
185 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
186 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
187
188 #define IEEE80211_RX_IN_SCAN BIT(0)
189 /* frame is destined to interface currently processed (incl. multicast frames) */
190 #define IEEE80211_RX_RA_MATCH BIT(1)
191 #define IEEE80211_RX_AMSDU BIT(2)
192 #define IEEE80211_RX_CMNTR_REPORTED BIT(3)
193 #define IEEE80211_RX_FRAGMENTED BIT(4)
194
195 struct ieee80211_rx_data {
196 struct sk_buff *skb;
197 struct net_device *dev;
198 struct ieee80211_local *local;
199 struct ieee80211_sub_if_data *sdata;
200 struct sta_info *sta;
201 struct ieee80211_key *key;
202 struct ieee80211_rx_status *status;
203 struct ieee80211_rate *rate;
204
205 u16 fc, ethertype;
206 unsigned int flags;
207 int sent_ps_buffered;
208 int queue;
209 u32 tkip_iv32;
210 u16 tkip_iv16;
211 };
212
213 struct ieee80211_tx_stored_packet {
214 struct sk_buff *skb;
215 struct sk_buff **extra_frag;
216 s8 last_frag_rate_idx;
217 int num_extra_frag;
218 bool last_frag_rate_ctrl_probe;
219 };
220
221 struct beacon_data {
222 u8 *head, *tail;
223 int head_len, tail_len;
224 int dtim_period;
225 };
226
227 struct ieee80211_if_ap {
228 struct beacon_data *beacon;
229
230 struct list_head vlans;
231
232 u8 ssid[IEEE80211_MAX_SSID_LEN];
233 size_t ssid_len;
234
235 /* yes, this looks ugly, but guarantees that we can later use
236 * bitmap_empty :)
237 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
238 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
239 struct sk_buff_head ps_bc_buf;
240 atomic_t num_sta_ps; /* number of stations in PS mode */
241 int dtim_count;
242 int num_beacons; /* number of TXed beacon frames for this BSS */
243 };
244
245 struct ieee80211_if_wds {
246 struct sta_info *sta;
247 u8 remote_addr[ETH_ALEN];
248 };
249
250 struct ieee80211_if_vlan {
251 struct list_head list;
252 };
253
254 struct mesh_stats {
255 __u32 fwded_frames; /* Mesh forwarded frames */
256 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
257 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
258 atomic_t estab_plinks;
259 };
260
261 #define PREQ_Q_F_START 0x1
262 #define PREQ_Q_F_REFRESH 0x2
263 struct mesh_preq_queue {
264 struct list_head list;
265 u8 dst[ETH_ALEN];
266 u8 flags;
267 };
268
269 struct mesh_config {
270 /* Timeouts in ms */
271 /* Mesh plink management parameters */
272 u16 dot11MeshRetryTimeout;
273 u16 dot11MeshConfirmTimeout;
274 u16 dot11MeshHoldingTimeout;
275 u16 dot11MeshMaxPeerLinks;
276 u8 dot11MeshMaxRetries;
277 u8 dot11MeshTTL;
278 bool auto_open_plinks;
279 /* HWMP parameters */
280 u8 dot11MeshHWMPmaxPREQretries;
281 u32 path_refresh_time;
282 u16 min_discovery_timeout;
283 u32 dot11MeshHWMPactivePathTimeout;
284 u16 dot11MeshHWMPpreqMinInterval;
285 u16 dot11MeshHWMPnetDiameterTraversalTime;
286 };
287
288
289 /* flags used in struct ieee80211_if_sta.flags */
290 #define IEEE80211_STA_SSID_SET BIT(0)
291 #define IEEE80211_STA_BSSID_SET BIT(1)
292 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
293 #define IEEE80211_STA_AUTHENTICATED BIT(3)
294 #define IEEE80211_STA_ASSOCIATED BIT(4)
295 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
296 #define IEEE80211_STA_CREATE_IBSS BIT(6)
297 #define IEEE80211_STA_MIXED_CELL BIT(7)
298 #define IEEE80211_STA_WMM_ENABLED BIT(8)
299 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
300 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
301 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
302 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
303 struct ieee80211_if_sta {
304 struct timer_list timer;
305 struct work_struct work;
306 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
307 u8 ssid[IEEE80211_MAX_SSID_LEN];
308 enum {
309 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
310 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
311 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED,
312 IEEE80211_MESH_UP
313 } state;
314 size_t ssid_len;
315 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
316 size_t scan_ssid_len;
317 #ifdef CONFIG_MAC80211_MESH
318 struct timer_list mesh_path_timer;
319 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
320 size_t mesh_id_len;
321 /* Active Path Selection Protocol Identifier */
322 u8 mesh_pp_id[4];
323 /* Active Path Selection Metric Identifier */
324 u8 mesh_pm_id[4];
325 /* Congestion Control Mode Identifier */
326 u8 mesh_cc_id[4];
327 /* Local mesh Destination Sequence Number */
328 u32 dsn;
329 /* Last used PREQ ID */
330 u32 preq_id;
331 atomic_t mpaths;
332 /* Timestamp of last DSN update */
333 unsigned long last_dsn_update;
334 /* Timestamp of last DSN sent */
335 unsigned long last_preq;
336 struct mesh_rmc *rmc;
337 spinlock_t mesh_preq_queue_lock;
338 struct mesh_preq_queue preq_queue;
339 int preq_queue_len;
340 struct mesh_stats mshstats;
341 struct mesh_config mshcfg;
342 u32 mesh_seqnum;
343 bool accepting_plinks;
344 #endif
345 u16 aid;
346 u16 ap_capab, capab;
347 u8 *extra_ie; /* to be added to the end of AssocReq */
348 size_t extra_ie_len;
349
350 /* The last AssocReq/Resp IEs */
351 u8 *assocreq_ies, *assocresp_ies;
352 size_t assocreq_ies_len, assocresp_ies_len;
353
354 struct sk_buff_head skb_queue;
355
356 int auth_tries, assoc_tries;
357
358 unsigned long request;
359
360 unsigned long last_probe;
361
362 unsigned int flags;
363 #define IEEE80211_STA_REQ_SCAN 0
364 #define IEEE80211_STA_REQ_AUTH 1
365 #define IEEE80211_STA_REQ_RUN 2
366
367 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
368 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
369 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
370 unsigned int auth_algs; /* bitfield of allowed auth algs */
371 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
372 int auth_transaction;
373
374 unsigned long ibss_join_req;
375 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
376 u32 supp_rates_bits[IEEE80211_NUM_BANDS];
377
378 int wmm_last_param_set;
379 int num_beacons; /* number of TXed beacon frames by this STA */
380 };
381
382 static inline void ieee80211_if_sta_set_mesh_id(struct ieee80211_if_sta *ifsta,
383 u8 mesh_id_len, u8 *mesh_id)
384 {
385 #ifdef CONFIG_MAC80211_MESH
386 ifsta->mesh_id_len = mesh_id_len;
387 memcpy(ifsta->mesh_id, mesh_id, mesh_id_len);
388 #endif
389 }
390
391 #ifdef CONFIG_MAC80211_MESH
392 #define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
393 do { (sta)->mshstats.name++; } while (0)
394 #else
395 #define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
396 do { } while (0)
397 #endif
398
399 /* flags used in struct ieee80211_sub_if_data.flags */
400 #define IEEE80211_SDATA_ALLMULTI BIT(0)
401 #define IEEE80211_SDATA_PROMISC BIT(1)
402 #define IEEE80211_SDATA_USERSPACE_MLME BIT(2)
403 #define IEEE80211_SDATA_OPERATING_GMODE BIT(3)
404 struct ieee80211_sub_if_data {
405 struct list_head list;
406
407 struct wireless_dev wdev;
408
409 /* keys */
410 struct list_head key_list;
411
412 struct net_device *dev;
413 struct ieee80211_local *local;
414
415 unsigned int flags;
416
417 int drop_unencrypted;
418
419 /*
420 * basic rates of this AP or the AP we're associated to
421 */
422 u64 basic_rates;
423
424 /* Fragment table for host-based reassembly */
425 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
426 unsigned int fragment_next;
427
428 #define NUM_DEFAULT_KEYS 4
429 struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
430 struct ieee80211_key *default_key;
431
432 /* BSS configuration for this interface. */
433 struct ieee80211_bss_conf bss_conf;
434
435 /*
436 * AP this belongs to: self in AP mode and
437 * corresponding AP in VLAN mode, NULL for
438 * all others (might be needed later in IBSS)
439 */
440 struct ieee80211_if_ap *bss;
441
442 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
443 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
444
445 union {
446 struct ieee80211_if_ap ap;
447 struct ieee80211_if_wds wds;
448 struct ieee80211_if_vlan vlan;
449 struct ieee80211_if_sta sta;
450 u32 mntr_flags;
451 } u;
452
453 #ifdef CONFIG_MAC80211_DEBUGFS
454 struct dentry *debugfsdir;
455 union {
456 struct {
457 struct dentry *drop_unencrypted;
458 struct dentry *state;
459 struct dentry *bssid;
460 struct dentry *prev_bssid;
461 struct dentry *ssid_len;
462 struct dentry *aid;
463 struct dentry *ap_capab;
464 struct dentry *capab;
465 struct dentry *extra_ie_len;
466 struct dentry *auth_tries;
467 struct dentry *assoc_tries;
468 struct dentry *auth_algs;
469 struct dentry *auth_alg;
470 struct dentry *auth_transaction;
471 struct dentry *flags;
472 struct dentry *num_beacons_sta;
473 struct dentry *force_unicast_rateidx;
474 struct dentry *max_ratectrl_rateidx;
475 } sta;
476 struct {
477 struct dentry *drop_unencrypted;
478 struct dentry *num_sta_ps;
479 struct dentry *dtim_count;
480 struct dentry *num_beacons;
481 struct dentry *force_unicast_rateidx;
482 struct dentry *max_ratectrl_rateidx;
483 struct dentry *num_buffered_multicast;
484 } ap;
485 struct {
486 struct dentry *drop_unencrypted;
487 struct dentry *peer;
488 struct dentry *force_unicast_rateidx;
489 struct dentry *max_ratectrl_rateidx;
490 } wds;
491 struct {
492 struct dentry *drop_unencrypted;
493 struct dentry *force_unicast_rateidx;
494 struct dentry *max_ratectrl_rateidx;
495 } vlan;
496 struct {
497 struct dentry *mode;
498 } monitor;
499 struct dentry *default_key;
500 } debugfs;
501
502 #ifdef CONFIG_MAC80211_MESH
503 struct dentry *mesh_stats_dir;
504 struct {
505 struct dentry *fwded_frames;
506 struct dentry *dropped_frames_ttl;
507 struct dentry *dropped_frames_no_route;
508 struct dentry *estab_plinks;
509 struct timer_list mesh_path_timer;
510 } mesh_stats;
511
512 struct dentry *mesh_config_dir;
513 struct {
514 struct dentry *dot11MeshRetryTimeout;
515 struct dentry *dot11MeshConfirmTimeout;
516 struct dentry *dot11MeshHoldingTimeout;
517 struct dentry *dot11MeshMaxRetries;
518 struct dentry *dot11MeshTTL;
519 struct dentry *auto_open_plinks;
520 struct dentry *dot11MeshMaxPeerLinks;
521 struct dentry *dot11MeshHWMPactivePathTimeout;
522 struct dentry *dot11MeshHWMPpreqMinInterval;
523 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
524 struct dentry *dot11MeshHWMPmaxPREQretries;
525 struct dentry *path_refresh_time;
526 struct dentry *min_discovery_timeout;
527 } mesh_config;
528 #endif
529
530 #endif
531 /* must be last, dynamically sized area in this! */
532 struct ieee80211_vif vif;
533 };
534
535 static inline
536 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
537 {
538 return container_of(p, struct ieee80211_sub_if_data, vif);
539 }
540
541 enum {
542 IEEE80211_RX_MSG = 1,
543 IEEE80211_TX_STATUS_MSG = 2,
544 IEEE80211_DELBA_MSG = 3,
545 IEEE80211_ADDBA_MSG = 4,
546 };
547
548 /* maximum number of hardware queues we support. */
549 #define QD_MAX_QUEUES (IEEE80211_MAX_AMPDU_QUEUES + IEEE80211_MAX_QUEUES)
550
551 struct ieee80211_local {
552 /* embed the driver visible part.
553 * don't cast (use the static inlines below), but we keep
554 * it first anyway so they become a no-op */
555 struct ieee80211_hw hw;
556
557 const struct ieee80211_ops *ops;
558
559 unsigned long queue_pool[BITS_TO_LONGS(QD_MAX_QUEUES)];
560
561 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
562 int open_count;
563 int monitors, cooked_mntrs;
564 /* number of interfaces with corresponding FIF_ flags */
565 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
566 unsigned int filter_flags; /* FIF_* */
567 struct iw_statistics wstats;
568 u8 wstats_flags;
569 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
570 int tx_headroom; /* required headroom for hardware/radiotap */
571
572 /* Tasklet and skb queue to process calls from IRQ mode. All frames
573 * added to skb_queue will be processed, but frames in
574 * skb_queue_unreliable may be dropped if the total length of these
575 * queues increases over the limit. */
576 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
577 struct tasklet_struct tasklet;
578 struct sk_buff_head skb_queue;
579 struct sk_buff_head skb_queue_unreliable;
580
581 /* Station data */
582 /*
583 * The lock only protects the list, hash, timer and counter
584 * against manipulation, reads are done in RCU. Additionally,
585 * the lock protects each BSS's TIM bitmap.
586 */
587 spinlock_t sta_lock;
588 unsigned long num_sta;
589 struct list_head sta_list;
590 struct list_head sta_flush_list;
591 struct work_struct sta_flush_work;
592 struct sta_info *sta_hash[STA_HASH_SIZE];
593 struct timer_list sta_cleanup;
594
595 unsigned long queues_pending[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
596 unsigned long queues_pending_run[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
597 struct ieee80211_tx_stored_packet pending_packet[IEEE80211_MAX_QUEUES];
598 struct tasklet_struct tx_pending_tasklet;
599
600 /* number of interfaces with corresponding IFF_ flags */
601 atomic_t iff_allmultis, iff_promiscs;
602
603 struct rate_control_ref *rate_ctrl;
604
605 int rts_threshold;
606 int fragmentation_threshold;
607 int short_retry_limit; /* dot11ShortRetryLimit */
608 int long_retry_limit; /* dot11LongRetryLimit */
609
610 struct crypto_blkcipher *wep_tx_tfm;
611 struct crypto_blkcipher *wep_rx_tfm;
612 u32 wep_iv;
613
614 int bridge_packets; /* bridge packets between associated stations and
615 * deliver multicast frames both back to wireless
616 * media and to the local net stack */
617
618 struct list_head interfaces;
619
620 /*
621 * Key lock, protects sdata's key_list and sta_info's
622 * key pointers (write access, they're RCU.)
623 */
624 spinlock_t key_lock;
625
626
627 bool sta_sw_scanning;
628 bool sta_hw_scanning;
629 int scan_channel_idx;
630 enum ieee80211_band scan_band;
631
632 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
633 unsigned long last_scan_completed;
634 struct delayed_work scan_work;
635 struct net_device *scan_dev;
636 struct ieee80211_channel *oper_channel, *scan_channel;
637 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
638 size_t scan_ssid_len;
639 struct list_head sta_bss_list;
640 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
641 spinlock_t sta_bss_lock;
642
643 /* SNMP counters */
644 /* dot11CountersTable */
645 u32 dot11TransmittedFragmentCount;
646 u32 dot11MulticastTransmittedFrameCount;
647 u32 dot11FailedCount;
648 u32 dot11RetryCount;
649 u32 dot11MultipleRetryCount;
650 u32 dot11FrameDuplicateCount;
651 u32 dot11ReceivedFragmentCount;
652 u32 dot11MulticastReceivedFrameCount;
653 u32 dot11TransmittedFrameCount;
654 u32 dot11WEPUndecryptableCount;
655
656 #ifdef CONFIG_MAC80211_LEDS
657 int tx_led_counter, rx_led_counter;
658 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
659 char tx_led_name[32], rx_led_name[32],
660 assoc_led_name[32], radio_led_name[32];
661 #endif
662
663 #ifdef CONFIG_MAC80211_DEBUGFS
664 struct work_struct sta_debugfs_add;
665 #endif
666
667 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
668 /* TX/RX handler statistics */
669 unsigned int tx_handlers_drop;
670 unsigned int tx_handlers_queued;
671 unsigned int tx_handlers_drop_unencrypted;
672 unsigned int tx_handlers_drop_fragment;
673 unsigned int tx_handlers_drop_wep;
674 unsigned int tx_handlers_drop_not_assoc;
675 unsigned int tx_handlers_drop_unauth_port;
676 unsigned int rx_handlers_drop;
677 unsigned int rx_handlers_queued;
678 unsigned int rx_handlers_drop_nullfunc;
679 unsigned int rx_handlers_drop_defrag;
680 unsigned int rx_handlers_drop_short;
681 unsigned int rx_handlers_drop_passive_scan;
682 unsigned int tx_expand_skb_head;
683 unsigned int tx_expand_skb_head_cloned;
684 unsigned int rx_expand_skb_head;
685 unsigned int rx_expand_skb_head2;
686 unsigned int rx_handlers_fragments;
687 unsigned int tx_status_drop;
688 #define I802_DEBUG_INC(c) (c)++
689 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
690 #define I802_DEBUG_INC(c) do { } while (0)
691 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
692
693
694 int total_ps_buffered; /* total number of all buffered unicast and
695 * multicast packets for power saving stations
696 */
697 int wifi_wme_noack_test;
698 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
699
700 #ifdef CONFIG_MAC80211_DEBUGFS
701 struct local_debugfsdentries {
702 struct dentry *frequency;
703 struct dentry *antenna_sel_tx;
704 struct dentry *antenna_sel_rx;
705 struct dentry *bridge_packets;
706 struct dentry *rts_threshold;
707 struct dentry *fragmentation_threshold;
708 struct dentry *short_retry_limit;
709 struct dentry *long_retry_limit;
710 struct dentry *total_ps_buffered;
711 struct dentry *wep_iv;
712 struct dentry *statistics;
713 struct local_debugfsdentries_statsdentries {
714 struct dentry *transmitted_fragment_count;
715 struct dentry *multicast_transmitted_frame_count;
716 struct dentry *failed_count;
717 struct dentry *retry_count;
718 struct dentry *multiple_retry_count;
719 struct dentry *frame_duplicate_count;
720 struct dentry *received_fragment_count;
721 struct dentry *multicast_received_frame_count;
722 struct dentry *transmitted_frame_count;
723 struct dentry *wep_undecryptable_count;
724 struct dentry *num_scans;
725 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
726 struct dentry *tx_handlers_drop;
727 struct dentry *tx_handlers_queued;
728 struct dentry *tx_handlers_drop_unencrypted;
729 struct dentry *tx_handlers_drop_fragment;
730 struct dentry *tx_handlers_drop_wep;
731 struct dentry *tx_handlers_drop_not_assoc;
732 struct dentry *tx_handlers_drop_unauth_port;
733 struct dentry *rx_handlers_drop;
734 struct dentry *rx_handlers_queued;
735 struct dentry *rx_handlers_drop_nullfunc;
736 struct dentry *rx_handlers_drop_defrag;
737 struct dentry *rx_handlers_drop_short;
738 struct dentry *rx_handlers_drop_passive_scan;
739 struct dentry *tx_expand_skb_head;
740 struct dentry *tx_expand_skb_head_cloned;
741 struct dentry *rx_expand_skb_head;
742 struct dentry *rx_expand_skb_head2;
743 struct dentry *rx_handlers_fragments;
744 struct dentry *tx_status_drop;
745 #endif
746 struct dentry *dot11ACKFailureCount;
747 struct dentry *dot11RTSFailureCount;
748 struct dentry *dot11FCSErrorCount;
749 struct dentry *dot11RTSSuccessCount;
750 } stats;
751 struct dentry *stations;
752 struct dentry *keys;
753 } debugfs;
754 #endif
755 };
756
757 static inline struct ieee80211_sub_if_data *
758 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
759 {
760 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
761
762 BUG_ON(!local || local->mdev == dev);
763
764 return netdev_priv(dev);
765 }
766
767 /* this struct represents 802.11n's RA/TID combination */
768 struct ieee80211_ra_tid {
769 u8 ra[ETH_ALEN];
770 u16 tid;
771 };
772
773 /* Parsed Information Elements */
774 struct ieee802_11_elems {
775 /* pointers to IEs */
776 u8 *ssid;
777 u8 *supp_rates;
778 u8 *fh_params;
779 u8 *ds_params;
780 u8 *cf_params;
781 u8 *tim;
782 u8 *ibss_params;
783 u8 *challenge;
784 u8 *wpa;
785 u8 *rsn;
786 u8 *erp_info;
787 u8 *ext_supp_rates;
788 u8 *wmm_info;
789 u8 *wmm_param;
790 u8 *ht_cap_elem;
791 u8 *ht_info_elem;
792 u8 *mesh_config;
793 u8 *mesh_id;
794 u8 *peer_link;
795 u8 *preq;
796 u8 *prep;
797 u8 *perr;
798 u8 *ch_switch_elem;
799 u8 *country_elem;
800 u8 *pwr_constr_elem;
801 u8 *quiet_elem; /* first quite element */
802
803 /* length of them, respectively */
804 u8 ssid_len;
805 u8 supp_rates_len;
806 u8 fh_params_len;
807 u8 ds_params_len;
808 u8 cf_params_len;
809 u8 tim_len;
810 u8 ibss_params_len;
811 u8 challenge_len;
812 u8 wpa_len;
813 u8 rsn_len;
814 u8 erp_info_len;
815 u8 ext_supp_rates_len;
816 u8 wmm_info_len;
817 u8 wmm_param_len;
818 u8 ht_cap_elem_len;
819 u8 ht_info_elem_len;
820 u8 mesh_config_len;
821 u8 mesh_id_len;
822 u8 peer_link_len;
823 u8 preq_len;
824 u8 prep_len;
825 u8 perr_len;
826 u8 ch_switch_elem_len;
827 u8 country_elem_len;
828 u8 pwr_constr_elem_len;
829 u8 quiet_elem_len;
830 u8 num_of_quiet_elem; /* can be more the one */
831 };
832
833 static inline struct ieee80211_local *hw_to_local(
834 struct ieee80211_hw *hw)
835 {
836 return container_of(hw, struct ieee80211_local, hw);
837 }
838
839 static inline struct ieee80211_hw *local_to_hw(
840 struct ieee80211_local *local)
841 {
842 return &local->hw;
843 }
844
845 struct sta_attribute {
846 struct attribute attr;
847 ssize_t (*show)(const struct sta_info *, char *buf);
848 ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
849 };
850
851 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
852 {
853 return compare_ether_addr(raddr, addr) == 0 ||
854 is_broadcast_ether_addr(raddr);
855 }
856
857
858 /* ieee80211.c */
859 int ieee80211_hw_config(struct ieee80211_local *local);
860 int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
861 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
862 u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
863 struct ieee80211_ht_info *req_ht_cap,
864 struct ieee80211_ht_bss_info *req_bss_cap);
865
866 /* ieee80211_ioctl.c */
867 extern const struct iw_handler_def ieee80211_iw_handler_def;
868 int ieee80211_set_freq(struct net_device *dev, int freq);
869
870 /* ieee80211_sta.c */
871 void ieee80211_sta_timer(unsigned long data);
872 void ieee80211_sta_work(struct work_struct *work);
873 void ieee80211_sta_scan_work(struct work_struct *work);
874 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
875 struct ieee80211_rx_status *rx_status);
876 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
877 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
878 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
879 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
880 void ieee80211_sta_req_auth(struct net_device *dev,
881 struct ieee80211_if_sta *ifsta);
882 int ieee80211_sta_scan_results(struct net_device *dev,
883 struct iw_request_info *info,
884 char *buf, size_t len);
885 ieee80211_rx_result ieee80211_sta_rx_scan(
886 struct net_device *dev, struct sk_buff *skb,
887 struct ieee80211_rx_status *rx_status);
888 void ieee80211_rx_bss_list_init(struct ieee80211_local *local);
889 void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local);
890 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
891 struct sta_info *ieee80211_ibss_add_sta(struct net_device *dev,
892 struct sk_buff *skb, u8 *bssid,
893 u8 *addr, u64 supp_rates);
894 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
895 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
896 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
897 u32 changed);
898 u32 ieee80211_reset_erp_info(struct net_device *dev);
899 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
900 struct ieee80211_ht_info *ht_info);
901 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
902 struct ieee80211_ht_addt_info *ht_add_info_ie,
903 struct ieee80211_ht_bss_info *bss_info);
904 void ieee80211_send_addba_request(struct net_device *dev, const u8 *da,
905 u16 tid, u8 dialog_token, u16 start_seq_num,
906 u16 agg_size, u16 timeout);
907 void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid,
908 u16 initiator, u16 reason_code);
909 void ieee80211_send_bar(struct net_device *dev, u8 *ra, u16 tid, u16 ssn);
910
911 void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *da,
912 u16 tid, u16 initiator, u16 reason);
913 void sta_addba_resp_timer_expired(unsigned long data);
914 void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr);
915 u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
916 struct ieee802_11_elems *elems,
917 enum ieee80211_band band);
918 void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
919 int encrypt);
920 void ieee802_11_parse_elems(u8 *start, size_t len,
921 struct ieee802_11_elems *elems);
922
923 #ifdef CONFIG_MAC80211_MESH
924 void ieee80211_start_mesh(struct net_device *dev);
925 #else
926 static inline void ieee80211_start_mesh(struct net_device *dev)
927 {}
928 #endif
929
930 /* interface handling */
931 void ieee80211_if_setup(struct net_device *dev);
932 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
933 struct net_device **new_dev, enum ieee80211_if_types type,
934 struct vif_params *params);
935 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
936 enum ieee80211_if_types type);
937 void ieee80211_if_remove(struct net_device *dev);
938 void ieee80211_remove_interfaces(struct ieee80211_local *local);
939
940 /* tx handling */
941 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
942 void ieee80211_tx_pending(unsigned long data);
943 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
944 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
945 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
946
947 /* utility functions/constants */
948 extern void *mac80211_wiphy_privid; /* for wiphy privid */
949 extern const unsigned char rfc1042_header[6];
950 extern const unsigned char bridge_tunnel_header[6];
951 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
952 enum ieee80211_if_types type);
953 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
954 int rate, int erp, int short_preamble);
955 void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx,
956 struct ieee80211_hdr *hdr);
957
958 #ifdef CONFIG_MAC80211_NOINLINE
959 #define debug_noinline noinline
960 #else
961 #define debug_noinline
962 #endif
963
964 #endif /* IEEE80211_I_H */
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