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[MAC80211]: avoid copying packets to interfaces that are down
[deliverable/linux.git] / net / mac80211 / ieee80211_i.h
CommitLineData
f0706e82
JB		 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>
571ecf67 24#include <linux/etherdevice.h>
f0706e82
JB		 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
38struct 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
63struct 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
75struct 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
5628221c
DD		 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;
f0706e82
JB		 109};
110
111
112typedef enum {
113 TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
114} ieee80211_txrx_result;
115
116struct ieee80211_txrx_data {
117 struct sk_buff *skb;
118 struct net_device *dev;
119 struct ieee80211_local *local;
120 struct ieee80211_sub_if_data *sdata;
121 struct sta_info *sta;
122 u16 fc, ethertype;
123 struct ieee80211_key *key;
124 unsigned int fragmented:1; /* whether the MSDU was fragmented */
125 union {
126 struct {
127 struct ieee80211_tx_control *control;
128 unsigned int unicast:1;
129 unsigned int ps_buffered:1;
f0706e82
JB		 130 unsigned int probe_last_frag:1;
131 struct ieee80211_hw_mode *mode;
132 struct ieee80211_rate *rate;
133 /* use this rate (if set) for last fragment; rate can
134 * be set to lower rate for the first fragments, e.g.,
135 * when using CTS protection with IEEE 802.11g. */
136 struct ieee80211_rate *last_frag_rate;
137 int last_frag_hwrate;
138 int mgmt_interface;
139
140 /* Extra fragments (in addition to the first fragment
141 * in skb) */
142 int num_extra_frag;
143 struct sk_buff **extra_frag;
144 } tx;
145 struct {
146 struct ieee80211_rx_status *status;
147 int sent_ps_buffered;
148 int queue;
149 int load;
150 unsigned int in_scan:1;
151 /* frame is destined to interface currently processed
152 * (including multicast frames) */
153 unsigned int ra_match:1;
154 } rx;
155 } u;
156};
157
158/* Stored in sk_buff->cb */
159struct ieee80211_tx_packet_data {
160 int ifindex;
161 unsigned long jiffies;
162 unsigned int req_tx_status:1;
163 unsigned int do_not_encrypt:1;
164 unsigned int requeue:1;
165 unsigned int mgmt_iface:1;
166 unsigned int queue:4;
167};
168
169struct ieee80211_tx_stored_packet {
170 struct ieee80211_tx_control control;
171 struct sk_buff *skb;
172 int num_extra_frag;
173 struct sk_buff **extra_frag;
174 int last_frag_rateidx;
175 int last_frag_hwrate;
176 struct ieee80211_rate *last_frag_rate;
177 unsigned int last_frag_rate_ctrl_probe:1;
178};
179
180typedef ieee80211_txrx_result (*ieee80211_tx_handler)
181(struct ieee80211_txrx_data *tx);
182
183typedef ieee80211_txrx_result (*ieee80211_rx_handler)
184(struct ieee80211_txrx_data *rx);
185
186struct ieee80211_if_ap {
187 u8 *beacon_head, *beacon_tail;
188 int beacon_head_len, beacon_tail_len;
189
190 u8 ssid[IEEE80211_MAX_SSID_LEN];
191 size_t ssid_len;
192 u8 *generic_elem;
193 size_t generic_elem_len;
194
195 /* yes, this looks ugly, but guarantees that we can later use
196 * bitmap_empty :)
197 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
198 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
199 atomic_t num_sta_ps; /* number of stations in PS mode */
200 struct sk_buff_head ps_bc_buf;
201 int dtim_period, dtim_count;
202 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
203 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
204 int num_beacons; /* number of TXed beacon frames for this BSS */
205};
206
207struct ieee80211_if_wds {
208 u8 remote_addr[ETH_ALEN];
209 struct sta_info *sta;
210};
211
212struct ieee80211_if_vlan {
213 u8 id;
214};
215
216struct ieee80211_if_sta {
217 enum {
218 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
219 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
220 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
221 } state;
222 struct timer_list timer;
223 struct work_struct work;
224 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
225 u8 ssid[IEEE80211_MAX_SSID_LEN];
226 size_t ssid_len;
227 u16 aid;
228 u16 ap_capab, capab;
229 u8 *extra_ie; /* to be added to the end of AssocReq */
230 size_t extra_ie_len;
231
232 /* The last AssocReq/Resp IEs */
233 u8 *assocreq_ies, *assocresp_ies;
234 size_t assocreq_ies_len, assocresp_ies_len;
235
236 int auth_tries, assoc_tries;
237
238 unsigned int ssid_set:1;
239 unsigned int bssid_set:1;
240 unsigned int prev_bssid_set:1;
241 unsigned int authenticated:1;
242 unsigned int associated:1;
243 unsigned int probereq_poll:1;
f0706e82
JB		 244 unsigned int create_ibss:1;
245 unsigned int mixed_cell:1;
246 unsigned int wmm_enabled:1;
247 unsigned int auto_ssid_sel:1;
248 unsigned int auto_bssid_sel:1;
249 unsigned int auto_channel_sel:1;
250#define IEEE80211_STA_REQ_SCAN 0
251#define IEEE80211_STA_REQ_AUTH 1
252#define IEEE80211_STA_REQ_RUN 2
253 unsigned long request;
254 struct sk_buff_head skb_queue;
255
256 int key_mgmt;
257 unsigned long last_probe;
258
259#define IEEE80211_AUTH_ALG_OPEN BIT(0)
260#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
261#define IEEE80211_AUTH_ALG_LEAP BIT(2)
262 unsigned int auth_algs; /* bitfield of allowed auth algs */
263 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
264 int auth_transaction;
265
266 unsigned long ibss_join_req;
267 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
268 u32 supp_rates_bits;
269
270 int wmm_last_param_set;
271};
272
273
274struct ieee80211_sub_if_data {
275 struct list_head list;
276 unsigned int type;
277
278 struct wireless_dev wdev;
279
280 struct net_device *dev;
281 struct ieee80211_local *local;
282
283 int mc_count;
284 unsigned int allmulti:1;
285 unsigned int promisc:1;
63fc33ce 286 unsigned int use_protection:1; /* CTS protect ERP frames */
f0706e82 287
7e9ed188
DD		 288 /* use short preamble with IEEE 802.11b: this flag is set when the AP
289 * or beacon generator reports that there are no present stations that
290 * cannot support short preambles */
291 unsigned int short_preamble:1;
292
f0706e82
JB		 293 struct net_device_stats stats;
294 int drop_unencrypted;
295 int eapol; /* 0 = process EAPOL frames as normal data frames,
296 * 1 = send EAPOL frames through wlan#ap to hostapd
297 * (default) */
298 int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
299 * port */
300
301 u16 sequence;
302
303 /* Fragment table for host-based reassembly */
304 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
305 unsigned int fragment_next;
306
307#define NUM_DEFAULT_KEYS 4
308 struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
309 struct ieee80211_key *default_key;
310
311 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
312
313 union {
314 struct ieee80211_if_ap ap;
315 struct ieee80211_if_wds wds;
316 struct ieee80211_if_vlan vlan;
317 struct ieee80211_if_sta sta;
318 } u;
319 int channel_use;
320 int channel_use_raw;
e9f207f0
JB		 321
322#ifdef CONFIG_MAC80211_DEBUGFS
323 struct dentry *debugfsdir;
324 union {
325 struct {
326 struct dentry *channel_use;
327 struct dentry *drop_unencrypted;
328 struct dentry *eapol;
329 struct dentry *ieee8021_x;
330 struct dentry *state;
331 struct dentry *bssid;
332 struct dentry *prev_bssid;
333 struct dentry *ssid_len;
334 struct dentry *aid;
335 struct dentry *ap_capab;
336 struct dentry *capab;
337 struct dentry *extra_ie_len;
338 struct dentry *auth_tries;
339 struct dentry *assoc_tries;
340 struct dentry *auth_algs;
341 struct dentry *auth_alg;
342 struct dentry *auth_transaction;
343 struct dentry *flags;
344 } sta;
345 struct {
346 struct dentry *channel_use;
347 struct dentry *drop_unencrypted;
348 struct dentry *eapol;
349 struct dentry *ieee8021_x;
350 struct dentry *num_sta_ps;
351 struct dentry *dtim_period;
352 struct dentry *dtim_count;
353 struct dentry *num_beacons;
354 struct dentry *force_unicast_rateidx;
355 struct dentry *max_ratectrl_rateidx;
356 struct dentry *num_buffered_multicast;
357 struct dentry *beacon_head_len;
358 struct dentry *beacon_tail_len;
359 } ap;
360 struct {
361 struct dentry *channel_use;
362 struct dentry *drop_unencrypted;
363 struct dentry *eapol;
364 struct dentry *ieee8021_x;
365 struct dentry *peer;
366 } wds;
367 struct {
368 struct dentry *channel_use;
369 struct dentry *drop_unencrypted;
370 struct dentry *eapol;
371 struct dentry *ieee8021_x;
372 struct dentry *vlan_id;
373 } vlan;
374 struct {
375 struct dentry *mode;
376 } monitor;
377 struct dentry *default_key;
378 } debugfs;
379#endif
f0706e82
JB		 380};
381
382#define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
383
384enum {
385 IEEE80211_RX_MSG = 1,
386 IEEE80211_TX_STATUS_MSG = 2,
387};
388
389struct ieee80211_local {
390 /* embed the driver visible part.
391 * don't cast (use the static inlines below), but we keep
392 * it first anyway so they become a no-op */
393 struct ieee80211_hw hw;
394
395 const struct ieee80211_ops *ops;
396
397 /* List of registered struct ieee80211_hw_mode */
398 struct list_head modes_list;
399
400 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
401 struct net_device *apdev; /* wlan#ap - management frames (hostapd) */
402 int open_count;
403 int monitors;
404 struct iw_statistics wstats;
405 u8 wstats_flags;
b306f453 406 int tx_headroom; /* required headroom for hardware/radiotap */
f0706e82
JB		 407
408 enum {
409 IEEE80211_DEV_UNINITIALIZED = 0,
410 IEEE80211_DEV_REGISTERED,
411 IEEE80211_DEV_UNREGISTERED,
412 } reg_state;
413
414 /* Tasklet and skb queue to process calls from IRQ mode. All frames
415 * added to skb_queue will be processed, but frames in
416 * skb_queue_unreliable may be dropped if the total length of these
417 * queues increases over the limit. */
418#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
419 struct tasklet_struct tasklet;
420 struct sk_buff_head skb_queue;
421 struct sk_buff_head skb_queue_unreliable;
422
423 /* Station data structures */
be8755e1 424 rwlock_t sta_lock; /* protects STA data structures */
f0706e82
JB		 425 int num_sta; /* number of stations in sta_list */
426 struct list_head sta_list;
f0706e82
JB		 427 struct sta_info *sta_hash[STA_HASH_SIZE];
428 struct timer_list sta_cleanup;
429
430 unsigned long state[NUM_TX_DATA_QUEUES];
431 struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES];
432 struct tasklet_struct tx_pending_tasklet;
433
434 int mc_count; /* total count of multicast entries in all interfaces */
435 int iff_allmultis, iff_promiscs;
436 /* number of interfaces with corresponding IFF_ flags */
437
438 struct rate_control_ref *rate_ctrl;
439
440 int next_mode; /* MODE_IEEE80211*
441 * The mode preference for next channel change. This is
442 * used to select .11g vs. .11b channels (or 4.9 GHz vs.
443 * .11a) when the channel number is not unique. */
444
445 /* Supported and basic rate filters for different modes. These are
446 * pointers to -1 terminated lists and rates in 100 kbps units. */
447 int *supp_rates[NUM_IEEE80211_MODES];
448 int *basic_rates[NUM_IEEE80211_MODES];
449
450 int rts_threshold;
f0706e82
JB		 451 int fragmentation_threshold;
452 int short_retry_limit; /* dot11ShortRetryLimit */
453 int long_retry_limit; /* dot11LongRetryLimit */
f0706e82
JB		 454
455 struct crypto_blkcipher *wep_tx_tfm;
456 struct crypto_blkcipher *wep_rx_tfm;
457 u32 wep_iv;
458 int key_tx_rx_threshold; /* number of times any key can be used in TX
459 * or RX before generating a rekey
460 * notification; 0 = notification disabled. */
461
462 int bridge_packets; /* bridge packets between associated stations and
463 * deliver multicast frames both back to wireless
464 * media and to the local net stack */
465
466 ieee80211_rx_handler *rx_pre_handlers;
467 ieee80211_rx_handler *rx_handlers;
468 ieee80211_tx_handler *tx_handlers;
469
470 rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under
471 * sta_bss_lock or sta_lock. */
472 struct list_head sub_if_list;
473 int sta_scanning;
474 int scan_channel_idx;
475 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
476 unsigned long last_scan_completed;
477 struct delayed_work scan_work;
478 struct net_device *scan_dev;
479 struct ieee80211_channel *oper_channel, *scan_channel;
480 struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode;
481 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
482 size_t scan_ssid_len;
483 struct list_head sta_bss_list;
484 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
485 spinlock_t sta_bss_lock;
486#define IEEE80211_SCAN_MATCH_SSID BIT(0)
487#define IEEE80211_SCAN_WPA_ONLY BIT(1)
488#define IEEE80211_SCAN_EXTRA_INFO BIT(2)
489 int scan_flags;
490
491 /* SNMP counters */
492 /* dot11CountersTable */
493 u32 dot11TransmittedFragmentCount;
494 u32 dot11MulticastTransmittedFrameCount;
495 u32 dot11FailedCount;
496 u32 dot11RetryCount;
497 u32 dot11MultipleRetryCount;
498 u32 dot11FrameDuplicateCount;
499 u32 dot11ReceivedFragmentCount;
500 u32 dot11MulticastReceivedFrameCount;
501 u32 dot11TransmittedFrameCount;
502 u32 dot11WEPUndecryptableCount;
503
504#ifdef CONFIG_MAC80211_LEDS
505 int tx_led_counter, rx_led_counter;
506 struct led_trigger *tx_led, *rx_led;
507 char tx_led_name[32], rx_led_name[32];
508#endif
509
510 u32 channel_use;
511 u32 channel_use_raw;
512 u32 stat_time;
513 struct timer_list stat_timer;
514
e9f207f0
JB		 515#ifdef CONFIG_MAC80211_DEBUGFS
516 struct work_struct sta_debugfs_add;
517#endif
518
f0706e82
JB		 519 enum {
520 STA_ANTENNA_SEL_AUTO = 0,
521 STA_ANTENNA_SEL_SW_CTRL = 1,
522 STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2
523 } sta_antenna_sel;
524
f0706e82
JB		 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 allow_broadcast_always; /* whether to allow TX of broadcast frames
561 * even when there are no associated STAs
562 */
563
564 int wifi_wme_noack_test;
565 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
566
567 unsigned int enabled_modes; /* bitfield of allowed modes;
568 * (1 << MODE_*) */
569 unsigned int hw_modes; /* bitfield of supported hardware modes;
570 * (1 << MODE_*) */
571
572 int user_space_mlme;
e9f207f0
JB		 573
574#ifdef CONFIG_MAC80211_DEBUGFS
575 struct local_debugfsdentries {
576 struct dentry *channel;
577 struct dentry *frequency;
578 struct dentry *radar_detect;
579 struct dentry *antenna_sel_tx;
580 struct dentry *antenna_sel_rx;
581 struct dentry *bridge_packets;
582 struct dentry *key_tx_rx_threshold;
583 struct dentry *rts_threshold;
584 struct dentry *fragmentation_threshold;
585 struct dentry *short_retry_limit;
586 struct dentry *long_retry_limit;
587 struct dentry *total_ps_buffered;
588 struct dentry *mode;
589 struct dentry *wep_iv;
590 struct dentry *tx_power_reduction;
591 struct dentry *modes;
592 struct dentry *statistics;
593 struct local_debugfsdentries_statsdentries {
594 struct dentry *transmitted_fragment_count;
595 struct dentry *multicast_transmitted_frame_count;
596 struct dentry *failed_count;
597 struct dentry *retry_count;
598 struct dentry *multiple_retry_count;
599 struct dentry *frame_duplicate_count;
600 struct dentry *received_fragment_count;
601 struct dentry *multicast_received_frame_count;
602 struct dentry *transmitted_frame_count;
603 struct dentry *wep_undecryptable_count;
604 struct dentry *num_scans;
605#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
606 struct dentry *tx_handlers_drop;
607 struct dentry *tx_handlers_queued;
608 struct dentry *tx_handlers_drop_unencrypted;
609 struct dentry *tx_handlers_drop_fragment;
610 struct dentry *tx_handlers_drop_wep;
611 struct dentry *tx_handlers_drop_not_assoc;
612 struct dentry *tx_handlers_drop_unauth_port;
613 struct dentry *rx_handlers_drop;
614 struct dentry *rx_handlers_queued;
615 struct dentry *rx_handlers_drop_nullfunc;
616 struct dentry *rx_handlers_drop_defrag;
617 struct dentry *rx_handlers_drop_short;
618 struct dentry *rx_handlers_drop_passive_scan;
619 struct dentry *tx_expand_skb_head;
620 struct dentry *tx_expand_skb_head_cloned;
621 struct dentry *rx_expand_skb_head;
622 struct dentry *rx_expand_skb_head2;
623 struct dentry *rx_handlers_fragments;
624 struct dentry *tx_status_drop;
625 struct dentry *wme_tx_queue;
626 struct dentry *wme_rx_queue;
627#endif
628 struct dentry *dot11ACKFailureCount;
629 struct dentry *dot11RTSFailureCount;
630 struct dentry *dot11FCSErrorCount;
631 struct dentry *dot11RTSSuccessCount;
632 } stats;
633 struct dentry *stations;
634 struct dentry *keys;
635 } debugfs;
636#endif
f0706e82
JB		 637};
638
639static inline struct ieee80211_local *hw_to_local(
640 struct ieee80211_hw *hw)
641{
642 return container_of(hw, struct ieee80211_local, hw);
643}
644
645static inline struct ieee80211_hw *local_to_hw(
646 struct ieee80211_local *local)
647{
648 return &local->hw;
649}
650
651enum ieee80211_link_state_t {
652 IEEE80211_LINK_STATE_XOFF = 0,
653 IEEE80211_LINK_STATE_PENDING,
654};
655
656struct sta_attribute {
657 struct attribute attr;
658 ssize_t (*show)(const struct sta_info *, char *buf);
659 ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
660};
661
662static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid)
663{
664 /*
665 * This format has ben mandated by the IEEE specifications,
666 * so this line may not be changed to use the __set_bit() format.
667 */
668 bss->tim[(aid)/8] |= 1<<((aid) % 8);
669}
670
671static inline void bss_tim_set(struct ieee80211_local *local,
672 struct ieee80211_if_ap *bss, int aid)
673{
be8755e1 674 read_lock_bh(&local->sta_lock);
f0706e82 675 __bss_tim_set(bss, aid);
be8755e1 676 read_unlock_bh(&local->sta_lock);
f0706e82
JB		 677}
678
679static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid)
680{
681 /*
682 * This format has ben mandated by the IEEE specifications,
683 * so this line may not be changed to use the __clear_bit() format.
684 */
685 bss->tim[(aid)/8] &= !(1<<((aid) % 8));
686}
687
688static inline void bss_tim_clear(struct ieee80211_local *local,
689 struct ieee80211_if_ap *bss, int aid)
690{
be8755e1 691 read_lock_bh(&local->sta_lock);
f0706e82 692 __bss_tim_clear(bss, aid);
be8755e1 693 read_unlock_bh(&local->sta_lock);
f0706e82
JB		 694}
695
696/**
697 * ieee80211_is_erp_rate - Check if a rate is an ERP rate
698 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
699 * @rate: Transmission rate to check, in 100 kbps
700 *
701 * Check if a given rate is an Extended Rate PHY (ERP) rate.
702 */
703static inline int ieee80211_is_erp_rate(int phymode, int rate)
704{
705 if (phymode == MODE_IEEE80211G) {
706 if (rate != 10 && rate != 20 &&
707 rate != 55 && rate != 110)
708 return 1;
709 }
710 return 0;
711}
712
571ecf67
JB		 713static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
714{
715 return compare_ether_addr(raddr, addr) == 0 ||
716 is_broadcast_ether_addr(raddr);
717}
718
719
f0706e82
JB		 720/* ieee80211.c */
721int ieee80211_hw_config(struct ieee80211_local *local);
722int ieee80211_if_config(struct net_device *dev);
723int ieee80211_if_config_beacon(struct net_device *dev);
f0706e82
JB		 724void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
725 struct ieee80211_rx_status *status, u32 msg_type);
726void ieee80211_prepare_rates(struct ieee80211_local *local,
727 struct ieee80211_hw_mode *mode);
728void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
729int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
730void ieee80211_if_setup(struct net_device *dev);
731void ieee80211_if_mgmt_setup(struct net_device *dev);
f0706e82 732struct net_device_stats *ieee80211_dev_stats(struct net_device *dev);
571ecf67
JB		 733struct ieee80211_rate *ieee80211_get_rate(struct ieee80211_local *local,
734 int phymode, int hwrate);
735void ieee80211_key_threshold_notify(struct net_device *dev,
736 struct ieee80211_key *key,
737 struct sta_info *sta);
f0706e82
JB		 738
739/* ieee80211_ioctl.c */
740extern const struct iw_handler_def ieee80211_iw_handler_def;
741
742void ieee80211_update_default_wep_only(struct ieee80211_local *local);
743
744
745/* Least common multiple of the used rates (in 100 kbps). This is used to
746 * calculate rate_inv values for each rate so that only integers are needed. */
747#define CHAN_UTIL_RATE_LCM 95040
748/* 1 usec is 1/8 * (95040/10) = 1188 */
749#define CHAN_UTIL_PER_USEC 1188
750/* Amount of bits to shift the result right to scale the total utilization
751 * to values that will not wrap around 32-bit integers. */
752#define CHAN_UTIL_SHIFT 9
753/* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
754 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
755 * raw value with about 23 should give utilization in 10th of a percentage
756 * (1/1000). However, utilization is only estimated and not all intervals
757 * between frames etc. are calculated. 18 seems to give numbers that are closer
758 * to the real maximum. */
759#define CHAN_UTIL_PER_10MS 18
760#define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
761#define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
762
763
764/* ieee80211_ioctl.c */
765int ieee80211_set_compression(struct ieee80211_local *local,
766 struct net_device *dev, struct sta_info *sta);
f0706e82
JB		 767int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq);
768/* ieee80211_sta.c */
769void ieee80211_sta_timer(unsigned long data);
770void ieee80211_sta_work(struct work_struct *work);
771void ieee80211_sta_scan_work(struct work_struct *work);
772void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
773 struct ieee80211_rx_status *rx_status);
774int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
775int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
776int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
777int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
778void ieee80211_sta_req_auth(struct net_device *dev,
779 struct ieee80211_if_sta *ifsta);
780int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
781void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
782 struct ieee80211_rx_status *rx_status);
783void ieee80211_rx_bss_list_init(struct net_device *dev);
784void ieee80211_rx_bss_list_deinit(struct net_device *dev);
785int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
786struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
787 struct sk_buff *skb, u8 *bssid,
788 u8 *addr);
789int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
790int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
d9430a32
DD		 791void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes);
792void ieee80211_reset_erp_info(struct net_device *dev);
f0706e82
JB		 793
794/* ieee80211_iface.c */
795int ieee80211_if_add(struct net_device *dev, const char *name,
796 struct net_device **new_dev, int type);
797void ieee80211_if_set_type(struct net_device *dev, int type);
798void ieee80211_if_reinit(struct net_device *dev);
799void __ieee80211_if_del(struct ieee80211_local *local,
800 struct ieee80211_sub_if_data *sdata);
801int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
802void ieee80211_if_free(struct net_device *dev);
803void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
804int ieee80211_if_add_mgmt(struct ieee80211_local *local);
805void ieee80211_if_del_mgmt(struct ieee80211_local *local);
806
fd8bacc9
DD		 807/* regdomain.c */
808void ieee80211_regdomain_init(void);
809void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode);
810
571ecf67
JB		 811/* rx handling */
812extern ieee80211_rx_handler ieee80211_rx_pre_handlers[];
813extern ieee80211_rx_handler ieee80211_rx_handlers[];
814
e2ebc74d
JB		 815/* tx handling */
816extern ieee80211_tx_handler ieee80211_tx_handlers[];
817void ieee80211_clear_tx_pending(struct ieee80211_local *local);
818void ieee80211_tx_pending(unsigned long data);
819int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
820int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
821int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
822int ieee80211_mgmt_start_xmit(struct sk_buff *skb, struct net_device *dev);
823
1f5a7e47
JB		 824/* key handling */
825struct ieee80211_key_conf *
826ieee80211_key_data2conf(struct ieee80211_local *local,
827 const struct ieee80211_key *data);
828struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
829 int idx, size_t key_len, gfp_t flags);
830void ieee80211_key_free(struct ieee80211_key *key);
831
c2d1560a
JB		 832/* utility functions/constants */
833extern void *mac80211_wiphy_privid; /* for wiphy privid */
834extern const unsigned char rfc1042_header[6];
835extern const unsigned char bridge_tunnel_header[6];
836u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len);
837int ieee80211_is_eapol(const struct sk_buff *skb);
838int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
839 int rate, int erp, int short_preamble);
f0706e82
JB		 840
841#endif /* IEEE80211_I_H */
Linux kernel - Deliverables
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