[MAC80211]: embed key conf in key, fix driver interface
[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 *
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.
9 */
10
11 #ifndef IEEE80211_I_H
12 #define IEEE80211_I_H
13
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/etherdevice.h>
25 #include <net/wireless.h>
26 #include "ieee80211_key.h"
27 #include "sta_info.h"
28
29 /* ieee80211.o internal definitions, etc. These are not included into
30 * low-level drivers. */
31
32 #ifndef ETH_P_PAE
33 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
34 #endif /* ETH_P_PAE */
35
36 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
37
38 struct ieee80211_local;
39
40 #define BIT(x) (1 << (x))
41
42 #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
43
44 /* Maximum number of broadcast/multicast frames to buffer when some of the
45 * associated stations are using power saving. */
46 #define AP_MAX_BC_BUFFER 128
47
48 /* Maximum number of frames buffered to all STAs, including multicast frames.
49 * Note: increasing this limit increases the potential memory requirement. Each
50 * frame can be up to about 2 kB long. */
51 #define TOTAL_MAX_TX_BUFFER 512
52
53 /* Required encryption head and tailroom */
54 #define IEEE80211_ENCRYPT_HEADROOM 8
55 #define IEEE80211_ENCRYPT_TAILROOM 12
56
57 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
58 * reception of at least three fragmented frames. This limit can be increased
59 * by changing this define, at the cost of slower frame reassembly and
60 * increased memory use (about 2 kB of RAM per entry). */
61 #define IEEE80211_FRAGMENT_MAX 4
62
63 struct ieee80211_fragment_entry {
64 unsigned long first_frag_time;
65 unsigned int seq;
66 unsigned int rx_queue;
67 unsigned int last_frag;
68 unsigned int extra_len;
69 struct sk_buff_head skb_list;
70 int ccmp; /* Whether fragments were encrypted with CCMP */
71 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
72 };
73
74
75 struct ieee80211_sta_bss {
76 struct list_head list;
77 struct ieee80211_sta_bss *hnext;
78 atomic_t users;
79
80 u8 bssid[ETH_ALEN];
81 u8 ssid[IEEE80211_MAX_SSID_LEN];
82 size_t ssid_len;
83 u16 capability; /* host byte order */
84 int hw_mode;
85 int channel;
86 int freq;
87 int rssi, signal, noise;
88 u8 *wpa_ie;
89 size_t wpa_ie_len;
90 u8 *rsn_ie;
91 size_t rsn_ie_len;
92 u8 *wmm_ie;
93 size_t wmm_ie_len;
94 #define IEEE80211_MAX_SUPP_RATES 32
95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
96 size_t supp_rates_len;
97 int beacon_int;
98 u64 timestamp;
99
100 int probe_resp;
101 unsigned long last_update;
102
103 /* during assocation, we save an ERP value from a probe response so
104 * that we can feed ERP info to the driver when handling the
105 * association completes. these fields probably won't be up-to-date
106 * otherwise, you probably don't want to use them. */
107 int has_erp_value;
108 u8 erp_value;
109 };
110
111
112 typedef enum {
113 TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
114 } ieee80211_txrx_result;
115
116 /* flags used in struct ieee80211_txrx_data.flags */
117 /* whether the MSDU was fragmented */
118 #define IEEE80211_TXRXD_FRAGMENTED BIT(0)
119 #define IEEE80211_TXRXD_TXUNICAST BIT(1)
120 #define IEEE80211_TXRXD_TXPS_BUFFERED BIT(2)
121 #define IEEE80211_TXRXD_TXPROBE_LAST_FRAG BIT(3)
122 #define IEEE80211_TXRXD_RXIN_SCAN BIT(4)
123 /* frame is destined to interface currently processed (incl. multicast frames) */
124 #define IEEE80211_TXRXD_RXRA_MATCH BIT(5)
125 struct ieee80211_txrx_data {
126 struct sk_buff *skb;
127 struct net_device *dev;
128 struct ieee80211_local *local;
129 struct ieee80211_sub_if_data *sdata;
130 struct sta_info *sta;
131 u16 fc, ethertype;
132 struct ieee80211_key *key;
133 unsigned int flags;
134 union {
135 struct {
136 struct ieee80211_tx_control *control;
137 struct ieee80211_hw_mode *mode;
138 struct ieee80211_rate *rate;
139 /* use this rate (if set) for last fragment; rate can
140 * be set to lower rate for the first fragments, e.g.,
141 * when using CTS protection with IEEE 802.11g. */
142 struct ieee80211_rate *last_frag_rate;
143 int last_frag_hwrate;
144 int mgmt_interface;
145
146 /* Extra fragments (in addition to the first fragment
147 * in skb) */
148 int num_extra_frag;
149 struct sk_buff **extra_frag;
150 } tx;
151 struct {
152 struct ieee80211_rx_status *status;
153 int sent_ps_buffered;
154 int queue;
155 int load;
156 } rx;
157 } u;
158 };
159
160 /* flags used in struct ieee80211_tx_packet_data.flags */
161 #define IEEE80211_TXPD_REQ_TX_STATUS BIT(0)
162 #define IEEE80211_TXPD_DO_NOT_ENCRYPT BIT(1)
163 #define IEEE80211_TXPD_REQUEUE BIT(2)
164 #define IEEE80211_TXPD_MGMT_IFACE BIT(3)
165 /* Stored in sk_buff->cb */
166 struct ieee80211_tx_packet_data {
167 int ifindex;
168 unsigned long jiffies;
169 unsigned int flags;
170 u8 queue;
171 };
172
173 struct ieee80211_tx_stored_packet {
174 struct ieee80211_tx_control control;
175 struct sk_buff *skb;
176 int num_extra_frag;
177 struct sk_buff **extra_frag;
178 int last_frag_rateidx;
179 int last_frag_hwrate;
180 struct ieee80211_rate *last_frag_rate;
181 unsigned int last_frag_rate_ctrl_probe;
182 };
183
184 typedef ieee80211_txrx_result (*ieee80211_tx_handler)
185 (struct ieee80211_txrx_data *tx);
186
187 typedef ieee80211_txrx_result (*ieee80211_rx_handler)
188 (struct ieee80211_txrx_data *rx);
189
190 struct ieee80211_if_ap {
191 u8 *beacon_head, *beacon_tail;
192 int beacon_head_len, beacon_tail_len;
193
194 u8 ssid[IEEE80211_MAX_SSID_LEN];
195 size_t ssid_len;
196 u8 *generic_elem;
197 size_t generic_elem_len;
198
199 /* yes, this looks ugly, but guarantees that we can later use
200 * bitmap_empty :)
201 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
202 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
203 atomic_t num_sta_ps; /* number of stations in PS mode */
204 struct sk_buff_head ps_bc_buf;
205 int dtim_period, dtim_count;
206 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
207 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
208 int num_beacons; /* number of TXed beacon frames for this BSS */
209 };
210
211 struct ieee80211_if_wds {
212 u8 remote_addr[ETH_ALEN];
213 struct sta_info *sta;
214 };
215
216 struct ieee80211_if_vlan {
217 u8 id;
218 };
219
220 /* flags used in struct ieee80211_if_sta.flags */
221 #define IEEE80211_STA_SSID_SET BIT(0)
222 #define IEEE80211_STA_BSSID_SET BIT(1)
223 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
224 #define IEEE80211_STA_AUTHENTICATED BIT(3)
225 #define IEEE80211_STA_ASSOCIATED BIT(4)
226 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
227 #define IEEE80211_STA_CREATE_IBSS BIT(6)
228 #define IEEE80211_STA_MIXED_CELL BIT(7)
229 #define IEEE80211_STA_WMM_ENABLED BIT(8)
230 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
231 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
232 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
233 struct ieee80211_if_sta {
234 enum {
235 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
236 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
237 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
238 } state;
239 struct timer_list timer;
240 struct work_struct work;
241 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
242 u8 ssid[IEEE80211_MAX_SSID_LEN];
243 size_t ssid_len;
244 u16 aid;
245 u16 ap_capab, capab;
246 u8 *extra_ie; /* to be added to the end of AssocReq */
247 size_t extra_ie_len;
248
249 /* The last AssocReq/Resp IEs */
250 u8 *assocreq_ies, *assocresp_ies;
251 size_t assocreq_ies_len, assocresp_ies_len;
252
253 int auth_tries, assoc_tries;
254
255 unsigned int flags;
256 #define IEEE80211_STA_REQ_SCAN 0
257 #define IEEE80211_STA_REQ_AUTH 1
258 #define IEEE80211_STA_REQ_RUN 2
259 unsigned long request;
260 struct sk_buff_head skb_queue;
261
262 int key_management_enabled;
263 unsigned long last_probe;
264
265 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
266 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
267 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
268 unsigned int auth_algs; /* bitfield of allowed auth algs */
269 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
270 int auth_transaction;
271
272 unsigned long ibss_join_req;
273 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
274 u32 supp_rates_bits;
275
276 int wmm_last_param_set;
277 };
278
279
280 /* flags used in struct ieee80211_sub_if_data.flags */
281 #define IEEE80211_SDATA_ALLMULTI BIT(0)
282 #define IEEE80211_SDATA_PROMISC BIT(1)
283 #define IEEE80211_SDATA_USE_PROTECTION BIT(2) /* CTS protect ERP frames */
284 /* use short preamble with IEEE 802.11b: this flag is set when the AP or beacon
285 * generator reports that there are no present stations that cannot support short
286 * preambles */
287 #define IEEE80211_SDATA_SHORT_PREAMBLE BIT(3)
288 struct ieee80211_sub_if_data {
289 struct list_head list;
290 unsigned int type;
291
292 struct wireless_dev wdev;
293
294 struct net_device *dev;
295 struct ieee80211_local *local;
296
297 int mc_count;
298
299 unsigned int flags;
300
301 struct net_device_stats stats;
302 int drop_unencrypted;
303 int eapol; /* 0 = process EAPOL frames as normal data frames,
304 * 1 = send EAPOL frames through wlan#ap to hostapd
305 * (default) */
306 int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
307 * port */
308
309 u16 sequence;
310
311 /* Fragment table for host-based reassembly */
312 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
313 unsigned int fragment_next;
314
315 #define NUM_DEFAULT_KEYS 4
316 struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
317 struct ieee80211_key *default_key;
318
319 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
320
321 union {
322 struct ieee80211_if_ap ap;
323 struct ieee80211_if_wds wds;
324 struct ieee80211_if_vlan vlan;
325 struct ieee80211_if_sta sta;
326 } u;
327 int channel_use;
328 int channel_use_raw;
329
330 #ifdef CONFIG_MAC80211_DEBUGFS
331 struct dentry *debugfsdir;
332 union {
333 struct {
334 struct dentry *channel_use;
335 struct dentry *drop_unencrypted;
336 struct dentry *eapol;
337 struct dentry *ieee8021_x;
338 struct dentry *state;
339 struct dentry *bssid;
340 struct dentry *prev_bssid;
341 struct dentry *ssid_len;
342 struct dentry *aid;
343 struct dentry *ap_capab;
344 struct dentry *capab;
345 struct dentry *extra_ie_len;
346 struct dentry *auth_tries;
347 struct dentry *assoc_tries;
348 struct dentry *auth_algs;
349 struct dentry *auth_alg;
350 struct dentry *auth_transaction;
351 struct dentry *flags;
352 } sta;
353 struct {
354 struct dentry *channel_use;
355 struct dentry *drop_unencrypted;
356 struct dentry *eapol;
357 struct dentry *ieee8021_x;
358 struct dentry *num_sta_ps;
359 struct dentry *dtim_period;
360 struct dentry *dtim_count;
361 struct dentry *num_beacons;
362 struct dentry *force_unicast_rateidx;
363 struct dentry *max_ratectrl_rateidx;
364 struct dentry *num_buffered_multicast;
365 struct dentry *beacon_head_len;
366 struct dentry *beacon_tail_len;
367 } ap;
368 struct {
369 struct dentry *channel_use;
370 struct dentry *drop_unencrypted;
371 struct dentry *eapol;
372 struct dentry *ieee8021_x;
373 struct dentry *peer;
374 } wds;
375 struct {
376 struct dentry *channel_use;
377 struct dentry *drop_unencrypted;
378 struct dentry *eapol;
379 struct dentry *ieee8021_x;
380 struct dentry *vlan_id;
381 } vlan;
382 struct {
383 struct dentry *mode;
384 } monitor;
385 struct dentry *default_key;
386 } debugfs;
387 #endif
388 };
389
390 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
391
392 enum {
393 IEEE80211_RX_MSG = 1,
394 IEEE80211_TX_STATUS_MSG = 2,
395 };
396
397 struct ieee80211_local {
398 /* embed the driver visible part.
399 * don't cast (use the static inlines below), but we keep
400 * it first anyway so they become a no-op */
401 struct ieee80211_hw hw;
402
403 const struct ieee80211_ops *ops;
404
405 /* List of registered struct ieee80211_hw_mode */
406 struct list_head modes_list;
407
408 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
409 struct net_device *apdev; /* wlan#ap - management frames (hostapd) */
410 int open_count;
411 int monitors;
412 struct iw_statistics wstats;
413 u8 wstats_flags;
414 int tx_headroom; /* required headroom for hardware/radiotap */
415
416 enum {
417 IEEE80211_DEV_UNINITIALIZED = 0,
418 IEEE80211_DEV_REGISTERED,
419 IEEE80211_DEV_UNREGISTERED,
420 } reg_state;
421
422 /* Tasklet and skb queue to process calls from IRQ mode. All frames
423 * added to skb_queue will be processed, but frames in
424 * skb_queue_unreliable may be dropped if the total length of these
425 * queues increases over the limit. */
426 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
427 struct tasklet_struct tasklet;
428 struct sk_buff_head skb_queue;
429 struct sk_buff_head skb_queue_unreliable;
430
431 /* Station data structures */
432 rwlock_t sta_lock; /* protects STA data structures */
433 int num_sta; /* number of stations in sta_list */
434 struct list_head sta_list;
435 struct sta_info *sta_hash[STA_HASH_SIZE];
436 struct timer_list sta_cleanup;
437
438 unsigned long state[NUM_TX_DATA_QUEUES];
439 struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES];
440 struct tasklet_struct tx_pending_tasklet;
441
442 int mc_count; /* total count of multicast entries in all interfaces */
443 int iff_allmultis, iff_promiscs;
444 /* number of interfaces with corresponding IFF_ flags */
445
446 struct rate_control_ref *rate_ctrl;
447
448 int next_mode; /* MODE_IEEE80211*
449 * The mode preference for next channel change. This is
450 * used to select .11g vs. .11b channels (or 4.9 GHz vs.
451 * .11a) when the channel number is not unique. */
452
453 /* Supported and basic rate filters for different modes. These are
454 * pointers to -1 terminated lists and rates in 100 kbps units. */
455 int *supp_rates[NUM_IEEE80211_MODES];
456 int *basic_rates[NUM_IEEE80211_MODES];
457
458 int rts_threshold;
459 int fragmentation_threshold;
460 int short_retry_limit; /* dot11ShortRetryLimit */
461 int long_retry_limit; /* dot11LongRetryLimit */
462
463 struct crypto_blkcipher *wep_tx_tfm;
464 struct crypto_blkcipher *wep_rx_tfm;
465 u32 wep_iv;
466 int key_tx_rx_threshold; /* number of times any key can be used in TX
467 * or RX before generating a rekey
468 * notification; 0 = notification disabled. */
469
470 int bridge_packets; /* bridge packets between associated stations and
471 * deliver multicast frames both back to wireless
472 * media and to the local net stack */
473
474 ieee80211_rx_handler *rx_pre_handlers;
475 ieee80211_rx_handler *rx_handlers;
476 ieee80211_tx_handler *tx_handlers;
477
478 rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under
479 * sta_bss_lock or sta_lock. */
480 struct list_head sub_if_list;
481 int sta_scanning;
482 int scan_channel_idx;
483 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
484 unsigned long last_scan_completed;
485 struct delayed_work scan_work;
486 struct net_device *scan_dev;
487 struct ieee80211_channel *oper_channel, *scan_channel;
488 struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode;
489 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
490 size_t scan_ssid_len;
491 struct list_head sta_bss_list;
492 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
493 spinlock_t sta_bss_lock;
494 #define IEEE80211_SCAN_MATCH_SSID BIT(0)
495 #define IEEE80211_SCAN_WPA_ONLY BIT(1)
496 #define IEEE80211_SCAN_EXTRA_INFO BIT(2)
497 int scan_flags;
498
499 /* SNMP counters */
500 /* dot11CountersTable */
501 u32 dot11TransmittedFragmentCount;
502 u32 dot11MulticastTransmittedFrameCount;
503 u32 dot11FailedCount;
504 u32 dot11RetryCount;
505 u32 dot11MultipleRetryCount;
506 u32 dot11FrameDuplicateCount;
507 u32 dot11ReceivedFragmentCount;
508 u32 dot11MulticastReceivedFrameCount;
509 u32 dot11TransmittedFrameCount;
510 u32 dot11WEPUndecryptableCount;
511
512 #ifdef CONFIG_MAC80211_LEDS
513 int tx_led_counter, rx_led_counter;
514 struct led_trigger *tx_led, *rx_led;
515 char tx_led_name[32], rx_led_name[32];
516 #endif
517
518 u32 channel_use;
519 u32 channel_use_raw;
520
521 #ifdef CONFIG_MAC80211_DEBUGFS
522 struct work_struct sta_debugfs_add;
523 #endif
524
525 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
526 /* TX/RX handler statistics */
527 unsigned int tx_handlers_drop;
528 unsigned int tx_handlers_queued;
529 unsigned int tx_handlers_drop_unencrypted;
530 unsigned int tx_handlers_drop_fragment;
531 unsigned int tx_handlers_drop_wep;
532 unsigned int tx_handlers_drop_not_assoc;
533 unsigned int tx_handlers_drop_unauth_port;
534 unsigned int rx_handlers_drop;
535 unsigned int rx_handlers_queued;
536 unsigned int rx_handlers_drop_nullfunc;
537 unsigned int rx_handlers_drop_defrag;
538 unsigned int rx_handlers_drop_short;
539 unsigned int rx_handlers_drop_passive_scan;
540 unsigned int tx_expand_skb_head;
541 unsigned int tx_expand_skb_head_cloned;
542 unsigned int rx_expand_skb_head;
543 unsigned int rx_expand_skb_head2;
544 unsigned int rx_handlers_fragments;
545 unsigned int tx_status_drop;
546 unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
547 unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
548 #define I802_DEBUG_INC(c) (c)++
549 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
550 #define I802_DEBUG_INC(c) do { } while (0)
551 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
552
553
554 int default_wep_only; /* only default WEP keys are used with this
555 * interface; this is used to decide when hwaccel
556 * can be used with default keys */
557 int total_ps_buffered; /* total number of all buffered unicast and
558 * multicast packets for power saving stations
559 */
560 int wifi_wme_noack_test;
561 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
562
563 unsigned int enabled_modes; /* bitfield of allowed modes;
564 * (1 << MODE_*) */
565 unsigned int hw_modes; /* bitfield of supported hardware modes;
566 * (1 << MODE_*) */
567
568 int user_space_mlme;
569
570 #ifdef CONFIG_MAC80211_DEBUGFS
571 struct local_debugfsdentries {
572 struct dentry *channel;
573 struct dentry *frequency;
574 struct dentry *antenna_sel_tx;
575 struct dentry *antenna_sel_rx;
576 struct dentry *bridge_packets;
577 struct dentry *key_tx_rx_threshold;
578 struct dentry *rts_threshold;
579 struct dentry *fragmentation_threshold;
580 struct dentry *short_retry_limit;
581 struct dentry *long_retry_limit;
582 struct dentry *total_ps_buffered;
583 struct dentry *mode;
584 struct dentry *wep_iv;
585 struct dentry *modes;
586 struct dentry *statistics;
587 struct local_debugfsdentries_statsdentries {
588 struct dentry *transmitted_fragment_count;
589 struct dentry *multicast_transmitted_frame_count;
590 struct dentry *failed_count;
591 struct dentry *retry_count;
592 struct dentry *multiple_retry_count;
593 struct dentry *frame_duplicate_count;
594 struct dentry *received_fragment_count;
595 struct dentry *multicast_received_frame_count;
596 struct dentry *transmitted_frame_count;
597 struct dentry *wep_undecryptable_count;
598 struct dentry *num_scans;
599 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
600 struct dentry *tx_handlers_drop;
601 struct dentry *tx_handlers_queued;
602 struct dentry *tx_handlers_drop_unencrypted;
603 struct dentry *tx_handlers_drop_fragment;
604 struct dentry *tx_handlers_drop_wep;
605 struct dentry *tx_handlers_drop_not_assoc;
606 struct dentry *tx_handlers_drop_unauth_port;
607 struct dentry *rx_handlers_drop;
608 struct dentry *rx_handlers_queued;
609 struct dentry *rx_handlers_drop_nullfunc;
610 struct dentry *rx_handlers_drop_defrag;
611 struct dentry *rx_handlers_drop_short;
612 struct dentry *rx_handlers_drop_passive_scan;
613 struct dentry *tx_expand_skb_head;
614 struct dentry *tx_expand_skb_head_cloned;
615 struct dentry *rx_expand_skb_head;
616 struct dentry *rx_expand_skb_head2;
617 struct dentry *rx_handlers_fragments;
618 struct dentry *tx_status_drop;
619 struct dentry *wme_tx_queue;
620 struct dentry *wme_rx_queue;
621 #endif
622 struct dentry *dot11ACKFailureCount;
623 struct dentry *dot11RTSFailureCount;
624 struct dentry *dot11FCSErrorCount;
625 struct dentry *dot11RTSSuccessCount;
626 } stats;
627 struct dentry *stations;
628 struct dentry *keys;
629 } debugfs;
630 #endif
631 };
632
633 static inline struct ieee80211_local *hw_to_local(
634 struct ieee80211_hw *hw)
635 {
636 return container_of(hw, struct ieee80211_local, hw);
637 }
638
639 static inline struct ieee80211_hw *local_to_hw(
640 struct ieee80211_local *local)
641 {
642 return &local->hw;
643 }
644
645 enum ieee80211_link_state_t {
646 IEEE80211_LINK_STATE_XOFF = 0,
647 IEEE80211_LINK_STATE_PENDING,
648 };
649
650 struct sta_attribute {
651 struct attribute attr;
652 ssize_t (*show)(const struct sta_info *, char *buf);
653 ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
654 };
655
656 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid)
657 {
658 /*
659 * This format has ben mandated by the IEEE specifications,
660 * so this line may not be changed to use the __set_bit() format.
661 */
662 bss->tim[(aid)/8] |= 1<<((aid) % 8);
663 }
664
665 static inline void bss_tim_set(struct ieee80211_local *local,
666 struct ieee80211_if_ap *bss, int aid)
667 {
668 read_lock_bh(&local->sta_lock);
669 __bss_tim_set(bss, aid);
670 read_unlock_bh(&local->sta_lock);
671 }
672
673 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid)
674 {
675 /*
676 * This format has ben mandated by the IEEE specifications,
677 * so this line may not be changed to use the __clear_bit() format.
678 */
679 bss->tim[(aid)/8] &= !(1<<((aid) % 8));
680 }
681
682 static inline void bss_tim_clear(struct ieee80211_local *local,
683 struct ieee80211_if_ap *bss, int aid)
684 {
685 read_lock_bh(&local->sta_lock);
686 __bss_tim_clear(bss, aid);
687 read_unlock_bh(&local->sta_lock);
688 }
689
690 /**
691 * ieee80211_is_erp_rate - Check if a rate is an ERP rate
692 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
693 * @rate: Transmission rate to check, in 100 kbps
694 *
695 * Check if a given rate is an Extended Rate PHY (ERP) rate.
696 */
697 static inline int ieee80211_is_erp_rate(int phymode, int rate)
698 {
699 if (phymode == MODE_IEEE80211G) {
700 if (rate != 10 && rate != 20 &&
701 rate != 55 && rate != 110)
702 return 1;
703 }
704 return 0;
705 }
706
707 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
708 {
709 return compare_ether_addr(raddr, addr) == 0 ||
710 is_broadcast_ether_addr(raddr);
711 }
712
713
714 /* ieee80211.c */
715 int ieee80211_hw_config(struct ieee80211_local *local);
716 int ieee80211_if_config(struct net_device *dev);
717 int ieee80211_if_config_beacon(struct net_device *dev);
718 void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
719 struct ieee80211_rx_status *status, u32 msg_type);
720 void ieee80211_prepare_rates(struct ieee80211_local *local,
721 struct ieee80211_hw_mode *mode);
722 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
723 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
724 void ieee80211_if_setup(struct net_device *dev);
725 void ieee80211_if_mgmt_setup(struct net_device *dev);
726 struct net_device_stats *ieee80211_dev_stats(struct net_device *dev);
727 struct ieee80211_rate *ieee80211_get_rate(struct ieee80211_local *local,
728 int phymode, int hwrate);
729 void ieee80211_key_threshold_notify(struct net_device *dev,
730 struct ieee80211_key *key,
731 struct sta_info *sta);
732
733 /* ieee80211_ioctl.c */
734 extern const struct iw_handler_def ieee80211_iw_handler_def;
735
736 void ieee80211_update_default_wep_only(struct ieee80211_local *local);
737
738
739 /* Least common multiple of the used rates (in 100 kbps). This is used to
740 * calculate rate_inv values for each rate so that only integers are needed. */
741 #define CHAN_UTIL_RATE_LCM 95040
742 /* 1 usec is 1/8 * (95040/10) = 1188 */
743 #define CHAN_UTIL_PER_USEC 1188
744 /* Amount of bits to shift the result right to scale the total utilization
745 * to values that will not wrap around 32-bit integers. */
746 #define CHAN_UTIL_SHIFT 9
747 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
748 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
749 * raw value with about 23 should give utilization in 10th of a percentage
750 * (1/1000). However, utilization is only estimated and not all intervals
751 * between frames etc. are calculated. 18 seems to give numbers that are closer
752 * to the real maximum. */
753 #define CHAN_UTIL_PER_10MS 18
754 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
755 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
756
757
758 /* ieee80211_ioctl.c */
759 int ieee80211_set_compression(struct ieee80211_local *local,
760 struct net_device *dev, struct sta_info *sta);
761 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq);
762 /* ieee80211_sta.c */
763 void ieee80211_sta_timer(unsigned long data);
764 void ieee80211_sta_work(struct work_struct *work);
765 void ieee80211_sta_scan_work(struct work_struct *work);
766 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
767 struct ieee80211_rx_status *rx_status);
768 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
769 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
770 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
771 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
772 void ieee80211_sta_req_auth(struct net_device *dev,
773 struct ieee80211_if_sta *ifsta);
774 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
775 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
776 struct ieee80211_rx_status *rx_status);
777 void ieee80211_rx_bss_list_init(struct net_device *dev);
778 void ieee80211_rx_bss_list_deinit(struct net_device *dev);
779 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
780 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
781 struct sk_buff *skb, u8 *bssid,
782 u8 *addr);
783 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
784 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
785 void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes);
786 void ieee80211_reset_erp_info(struct net_device *dev);
787
788 /* ieee80211_iface.c */
789 int ieee80211_if_add(struct net_device *dev, const char *name,
790 struct net_device **new_dev, int type);
791 void ieee80211_if_set_type(struct net_device *dev, int type);
792 void ieee80211_if_reinit(struct net_device *dev);
793 void __ieee80211_if_del(struct ieee80211_local *local,
794 struct ieee80211_sub_if_data *sdata);
795 int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
796 void ieee80211_if_free(struct net_device *dev);
797 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
798 int ieee80211_if_add_mgmt(struct ieee80211_local *local);
799 void ieee80211_if_del_mgmt(struct ieee80211_local *local);
800
801 /* regdomain.c */
802 void ieee80211_regdomain_init(void);
803 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode);
804
805 /* rx handling */
806 extern ieee80211_rx_handler ieee80211_rx_pre_handlers[];
807 extern ieee80211_rx_handler ieee80211_rx_handlers[];
808
809 /* tx handling */
810 extern ieee80211_tx_handler ieee80211_tx_handlers[];
811 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
812 void ieee80211_tx_pending(unsigned long data);
813 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
814 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
815 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
816 int ieee80211_mgmt_start_xmit(struct sk_buff *skb, struct net_device *dev);
817
818 /* key handling */
819 struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
820 int idx, size_t key_len, gfp_t flags);
821 void ieee80211_key_free(struct ieee80211_key *key);
822
823 /* utility functions/constants */
824 extern void *mac80211_wiphy_privid; /* for wiphy privid */
825 extern const unsigned char rfc1042_header[6];
826 extern const unsigned char bridge_tunnel_header[6];
827 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len);
828 int ieee80211_is_eapol(const struct sk_buff *skb);
829 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
830 int rate, int erp, int short_preamble);
831 void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx,
832 struct ieee80211_hdr *hdr);
833
834 #endif /* IEEE80211_I_H */
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