tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/*
2 * Merged with mainline ieee80211.h in Aug 2004. Original ieee802_11
3 * remains copyright by the original authors
4 *
5 * Portions of the merged code are based on Host AP (software wireless
6 * LAN access point) driver for Intersil Prism2/2.5/3.
7 *
8 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
9 * <jkmaline@cc.hut.fi>
10 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
11 *
12 * Adaption to a generic IEEE 802.11 stack by James Ketrenos
13 * <jketreno@linux.intel.com>
14 * Copyright (c) 2004-2005, Intel Corporation
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License version 2 as
18 * published by the Free Software Foundation. See README and COPYING for
19 * more details.
20 *
21 * API Version History
22 * 1.0.x -- Initial version
23 * 1.1.x -- Added radiotap, QoS, TIM, ieee80211_geo APIs,
24 * various structure changes, and crypto API init method
25 */
26#ifndef IEEE80211_H
27#define IEEE80211_H
28#include <linux/if_ether.h> /* ETH_ALEN */
29#include <linux/kernel.h> /* ARRAY_SIZE */
30#include <linux/wireless.h>
31
32#define IEEE80211_VERSION "git-1.1.7"
33
34#define IEEE80211_DATA_LEN 2304
35/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
36 6.2.1.1.2.
37
38 The figure in section 7.1.2 suggests a body size of up to 2312
39 bytes is allowed, which is a bit confusing, I suspect this
40 represents the 2304 bytes of real data, plus a possible 8 bytes of
41 WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
42
43#define IEEE80211_1ADDR_LEN 10
44#define IEEE80211_2ADDR_LEN 16
45#define IEEE80211_3ADDR_LEN 24
46#define IEEE80211_4ADDR_LEN 30
47#define IEEE80211_FCS_LEN 4
48#define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
49#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
50
51#define MIN_FRAG_THRESHOLD 256U
52#define MAX_FRAG_THRESHOLD 2346U
53
54/* Frame control field constants */
55#define IEEE80211_FCTL_VERS 0x0003
56#define IEEE80211_FCTL_FTYPE 0x000c
57#define IEEE80211_FCTL_STYPE 0x00f0
58#define IEEE80211_FCTL_TODS 0x0100
59#define IEEE80211_FCTL_FROMDS 0x0200
60#define IEEE80211_FCTL_MOREFRAGS 0x0400
61#define IEEE80211_FCTL_RETRY 0x0800
62#define IEEE80211_FCTL_PM 0x1000
63#define IEEE80211_FCTL_MOREDATA 0x2000
64#define IEEE80211_FCTL_PROTECTED 0x4000
65#define IEEE80211_FCTL_ORDER 0x8000
66
67#define IEEE80211_FTYPE_MGMT 0x0000
68#define IEEE80211_FTYPE_CTL 0x0004
69#define IEEE80211_FTYPE_DATA 0x0008
70
71/* management */
72#define IEEE80211_STYPE_ASSOC_REQ 0x0000
73#define IEEE80211_STYPE_ASSOC_RESP 0x0010
74#define IEEE80211_STYPE_REASSOC_REQ 0x0020
75#define IEEE80211_STYPE_REASSOC_RESP 0x0030
76#define IEEE80211_STYPE_PROBE_REQ 0x0040
77#define IEEE80211_STYPE_PROBE_RESP 0x0050
78#define IEEE80211_STYPE_BEACON 0x0080
79#define IEEE80211_STYPE_ATIM 0x0090
80#define IEEE80211_STYPE_DISASSOC 0x00A0
81#define IEEE80211_STYPE_AUTH 0x00B0
82#define IEEE80211_STYPE_DEAUTH 0x00C0
83#define IEEE80211_STYPE_ACTION 0x00D0
84
85/* control */
86#define IEEE80211_STYPE_PSPOLL 0x00A0
87#define IEEE80211_STYPE_RTS 0x00B0
88#define IEEE80211_STYPE_CTS 0x00C0
89#define IEEE80211_STYPE_ACK 0x00D0
90#define IEEE80211_STYPE_CFEND 0x00E0
91#define IEEE80211_STYPE_CFENDACK 0x00F0
92
93/* data */
94#define IEEE80211_STYPE_DATA 0x0000
95#define IEEE80211_STYPE_DATA_CFACK 0x0010
96#define IEEE80211_STYPE_DATA_CFPOLL 0x0020
97#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
98#define IEEE80211_STYPE_NULLFUNC 0x0040
99#define IEEE80211_STYPE_CFACK 0x0050
100#define IEEE80211_STYPE_CFPOLL 0x0060
101#define IEEE80211_STYPE_CFACKPOLL 0x0070
102#define IEEE80211_STYPE_QOS_DATA 0x0080
103
104#define IEEE80211_SCTL_FRAG 0x000F
105#define IEEE80211_SCTL_SEQ 0xFFF0
106
107/* debug macros */
108
109#ifdef CONFIG_IEEE80211_DEBUG
110extern u32 ieee80211_debug_level;
111#define IEEE80211_DEBUG(level, fmt, args...) \
112do { if (ieee80211_debug_level & (level)) \
113 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
114 in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
115#else
116#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
117#endif /* CONFIG_IEEE80211_DEBUG */
118
119/* debug macros not dependent on CONFIG_IEEE80211_DEBUG */
120
121#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
122#define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
123
124/* escape_essid() is intended to be used in debug (and possibly error)
125 * messages. It should never be used for passing essid to user space. */
126const char *escape_essid(const char *essid, u8 essid_len);
127
128/*
129 * To use the debug system:
130 *
131 * If you are defining a new debug classification, simply add it to the #define
132 * list here in the form of:
133 *
134 * #define IEEE80211_DL_xxxx VALUE
135 *
136 * shifting value to the left one bit from the previous entry. xxxx should be
137 * the name of the classification (for example, WEP)
138 *
139 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
140 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
141 * to send output to that classification.
142 *
143 * To add your debug level to the list of levels seen when you perform
144 *
145 * % cat /proc/net/ieee80211/debug_level
146 *
147 * you simply need to add your entry to the ieee80211_debug_level array.
148 *
149 * If you do not see debug_level in /proc/net/ieee80211 then you do not have
150 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
151 *
152 */
153
154#define IEEE80211_DL_INFO (1<<0)
155#define IEEE80211_DL_WX (1<<1)
156#define IEEE80211_DL_SCAN (1<<2)
157#define IEEE80211_DL_STATE (1<<3)
158#define IEEE80211_DL_MGMT (1<<4)
159#define IEEE80211_DL_FRAG (1<<5)
160#define IEEE80211_DL_DROP (1<<7)
161
162#define IEEE80211_DL_TX (1<<8)
163#define IEEE80211_DL_RX (1<<9)
164#define IEEE80211_DL_QOS (1<<31)
165
166#define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
167#define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
168#define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
169
170#define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
171#define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
172#define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
173#define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
174#define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
175#define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
176#define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
177#define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
178#define IEEE80211_DEBUG_QOS(f, a...) IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
179#include <linux/netdevice.h>
180#include <linux/wireless.h>
181#include <linux/if_arp.h> /* ARPHRD_ETHER */
182
183#ifndef WIRELESS_SPY
184#define WIRELESS_SPY /* enable iwspy support */
185#endif
186#include <net/iw_handler.h> /* new driver API */
187
188#ifndef ETH_P_PAE
189#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
190#endif /* ETH_P_PAE */
191
192#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
193
194#ifndef ETH_P_80211_RAW
195#define ETH_P_80211_RAW (ETH_P_ECONET + 1)
196#endif
197
198/* IEEE 802.11 defines */
199
200#define P80211_OUI_LEN 3
201
202struct ieee80211_snap_hdr {
203
204 u8 dsap; /* always 0xAA */
205 u8 ssap; /* always 0xAA */
206 u8 ctrl; /* always 0x03 */
207 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
208
209} __attribute__ ((packed));
210
211#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
212
213#define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
214#define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
215#define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
216
217#define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
218#define WLAN_GET_SEQ_SEQ(seq) ((seq) & IEEE80211_SCTL_SEQ)
219
220/* Authentication algorithms */
221#define WLAN_AUTH_OPEN 0
222#define WLAN_AUTH_SHARED_KEY 1
223#define WLAN_AUTH_LEAP 2
224
225#define WLAN_AUTH_CHALLENGE_LEN 128
226
227#define WLAN_CAPABILITY_ESS (1<<0)
228#define WLAN_CAPABILITY_IBSS (1<<1)
229#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
230#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
231#define WLAN_CAPABILITY_PRIVACY (1<<4)
232#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
233#define WLAN_CAPABILITY_PBCC (1<<6)
234#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
235#define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
236#define WLAN_CAPABILITY_QOS (1<<9)
237#define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
238#define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
239
240/* Status codes */
241enum ieee80211_statuscode {
242 WLAN_STATUS_SUCCESS = 0,
243 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
244 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
245 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
246 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
247 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
248 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
249 WLAN_STATUS_CHALLENGE_FAIL = 15,
250 WLAN_STATUS_AUTH_TIMEOUT = 16,
251 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
252 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
253 /* 802.11b */
254 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
255 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
256 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
257 /* 802.11h */
258 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
259 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
260 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
261 /* 802.11g */
262 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
263 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
264 /* 802.11i */
265 WLAN_STATUS_INVALID_IE = 40,
266 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
267 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
268 WLAN_STATUS_INVALID_AKMP = 43,
269 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
270 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
271 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
272};
273
274/* Reason codes */
275enum ieee80211_reasoncode {
276 WLAN_REASON_UNSPECIFIED = 1,
277 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
278 WLAN_REASON_DEAUTH_LEAVING = 3,
279 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
280 WLAN_REASON_DISASSOC_AP_BUSY = 5,
281 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
282 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
283 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
284 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
285 /* 802.11h */
286 WLAN_REASON_DISASSOC_BAD_POWER = 10,
287 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
288 /* 802.11i */
289 WLAN_REASON_INVALID_IE = 13,
290 WLAN_REASON_MIC_FAILURE = 14,
291 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
292 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
293 WLAN_REASON_IE_DIFFERENT = 17,
294 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
295 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
296 WLAN_REASON_INVALID_AKMP = 20,
297 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
298 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
299 WLAN_REASON_IEEE8021X_FAILED = 23,
300 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
301};
302
303/* Action categories - 802.11h */
304enum ieee80211_actioncategories {
305 WLAN_ACTION_SPECTRUM_MGMT = 0,
306 /* Reserved 1-127 */
307 /* Error 128-255 */
308};
309
310/* Action details - 802.11h */
311enum ieee80211_actiondetails {
312 WLAN_ACTION_CATEGORY_MEASURE_REQUEST = 0,
313 WLAN_ACTION_CATEGORY_MEASURE_REPORT = 1,
314 WLAN_ACTION_CATEGORY_TPC_REQUEST = 2,
315 WLAN_ACTION_CATEGORY_TPC_REPORT = 3,
316 WLAN_ACTION_CATEGORY_CHANNEL_SWITCH = 4,
317 /* 5 - 255 Reserved */
318};
319
320#define IEEE80211_STATMASK_SIGNAL (1<<0)
321#define IEEE80211_STATMASK_RSSI (1<<1)
322#define IEEE80211_STATMASK_NOISE (1<<2)
323#define IEEE80211_STATMASK_RATE (1<<3)
324#define IEEE80211_STATMASK_WEMASK 0x7
325
326#define IEEE80211_CCK_MODULATION (1<<0)
327#define IEEE80211_OFDM_MODULATION (1<<1)
328
329#define IEEE80211_24GHZ_BAND (1<<0)
330#define IEEE80211_52GHZ_BAND (1<<1)
331
332#define IEEE80211_CCK_RATE_1MB 0x02
333#define IEEE80211_CCK_RATE_2MB 0x04
334#define IEEE80211_CCK_RATE_5MB 0x0B
335#define IEEE80211_CCK_RATE_11MB 0x16
336#define IEEE80211_OFDM_RATE_6MB 0x0C
337#define IEEE80211_OFDM_RATE_9MB 0x12
338#define IEEE80211_OFDM_RATE_12MB 0x18
339#define IEEE80211_OFDM_RATE_18MB 0x24
340#define IEEE80211_OFDM_RATE_24MB 0x30
341#define IEEE80211_OFDM_RATE_36MB 0x48
342#define IEEE80211_OFDM_RATE_48MB 0x60
343#define IEEE80211_OFDM_RATE_54MB 0x6C
344#define IEEE80211_BASIC_RATE_MASK 0x80
345
346#define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
347#define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
348#define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
349#define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
350#define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
351#define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
352#define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
353#define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
354#define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
355#define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
356#define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
357#define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
358
359#define IEEE80211_CCK_RATES_MASK 0x0000000F
360#define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
361 IEEE80211_CCK_RATE_2MB_MASK)
362#define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
363 IEEE80211_CCK_RATE_5MB_MASK | \
364 IEEE80211_CCK_RATE_11MB_MASK)
365
366#define IEEE80211_OFDM_RATES_MASK 0x00000FF0
367#define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
368 IEEE80211_OFDM_RATE_12MB_MASK | \
369 IEEE80211_OFDM_RATE_24MB_MASK)
370#define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
371 IEEE80211_OFDM_RATE_9MB_MASK | \
372 IEEE80211_OFDM_RATE_18MB_MASK | \
373 IEEE80211_OFDM_RATE_36MB_MASK | \
374 IEEE80211_OFDM_RATE_48MB_MASK | \
375 IEEE80211_OFDM_RATE_54MB_MASK)
376#define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
377 IEEE80211_CCK_DEFAULT_RATES_MASK)
378
379#define IEEE80211_NUM_OFDM_RATES 8
380#define IEEE80211_NUM_CCK_RATES 4
381#define IEEE80211_OFDM_SHIFT_MASK_A 4
382
383/* NOTE: This data is for statistical purposes; not all hardware provides this
384 * information for frames received.
385 * For ieee80211_rx_mgt, you need to set at least the 'len' parameter.
386 */
387struct ieee80211_rx_stats {
388 u32 mac_time;
389 s8 rssi;
390 u8 signal;
391 u8 noise;
392 u16 rate; /* in 100 kbps */
393 u8 received_channel;
394 u8 control;
395 u8 mask;
396 u8 freq;
397 u16 len;
398 u64 tsf;
399 u32 beacon_time;
400};
401
402/* IEEE 802.11 requires that STA supports concurrent reception of at least
403 * three fragmented frames. This define can be increased to support more
404 * concurrent frames, but it should be noted that each entry can consume about
405 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
406#define IEEE80211_FRAG_CACHE_LEN 4
407
408struct ieee80211_frag_entry {
409 unsigned long first_frag_time;
410 unsigned int seq;
411 unsigned int last_frag;
412 struct sk_buff *skb;
413 u8 src_addr[ETH_ALEN];
414 u8 dst_addr[ETH_ALEN];
415};
416
417struct ieee80211_stats {
418 unsigned int tx_unicast_frames;
419 unsigned int tx_multicast_frames;
420 unsigned int tx_fragments;
421 unsigned int tx_unicast_octets;
422 unsigned int tx_multicast_octets;
423 unsigned int tx_deferred_transmissions;
424 unsigned int tx_single_retry_frames;
425 unsigned int tx_multiple_retry_frames;
426 unsigned int tx_retry_limit_exceeded;
427 unsigned int tx_discards;
428 unsigned int rx_unicast_frames;
429 unsigned int rx_multicast_frames;
430 unsigned int rx_fragments;
431 unsigned int rx_unicast_octets;
432 unsigned int rx_multicast_octets;
433 unsigned int rx_fcs_errors;
434 unsigned int rx_discards_no_buffer;
435 unsigned int tx_discards_wrong_sa;
436 unsigned int rx_discards_undecryptable;
437 unsigned int rx_message_in_msg_fragments;
438 unsigned int rx_message_in_bad_msg_fragments;
439};
440
441struct ieee80211_device;
442
443#include "ieee80211_crypt.h"
444
445#define SEC_KEY_1 (1<<0)
446#define SEC_KEY_2 (1<<1)
447#define SEC_KEY_3 (1<<2)
448#define SEC_KEY_4 (1<<3)
449#define SEC_ACTIVE_KEY (1<<4)
450#define SEC_AUTH_MODE (1<<5)
451#define SEC_UNICAST_GROUP (1<<6)
452#define SEC_LEVEL (1<<7)
453#define SEC_ENABLED (1<<8)
454#define SEC_ENCRYPT (1<<9)
455
456#define SEC_LEVEL_0 0 /* None */
457#define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
458#define SEC_LEVEL_2 2 /* Level 1 + TKIP */
459#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
460#define SEC_LEVEL_3 4 /* Level 2 + CCMP */
461
462#define SEC_ALG_NONE 0
463#define SEC_ALG_WEP 1
464#define SEC_ALG_TKIP 2
465#define SEC_ALG_CCMP 3
466
467#define WEP_KEYS 4
468#define WEP_KEY_LEN 13
469#define SCM_KEY_LEN 32
470#define SCM_TEMPORAL_KEY_LENGTH 16
471
472struct ieee80211_security {
473 u16 active_key:2,
474 enabled:1,
475 auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
476 u8 encode_alg[WEP_KEYS];
477 u8 key_sizes[WEP_KEYS];
478 u8 keys[WEP_KEYS][SCM_KEY_LEN];
479 u8 level;
480 u16 flags;
481} __attribute__ ((packed));
482
483/*
484
485 802.11 data frame from AP
486
487 ,-------------------------------------------------------------------.
488Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
489 |------|------|---------|---------|---------|------|---------|------|
490Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
491 | | tion | (BSSID) | | | ence | data | |
492 `-------------------------------------------------------------------'
493
494Total: 28-2340 bytes
495
496*/
497
498#define BEACON_PROBE_SSID_ID_POSITION 12
499
500/* Management Frame Information Element Types */
501enum ieee80211_mfie {
502 MFIE_TYPE_SSID = 0,
503 MFIE_TYPE_RATES = 1,
504 MFIE_TYPE_FH_SET = 2,
505 MFIE_TYPE_DS_SET = 3,
506 MFIE_TYPE_CF_SET = 4,
507 MFIE_TYPE_TIM = 5,
508 MFIE_TYPE_IBSS_SET = 6,
509 MFIE_TYPE_COUNTRY = 7,
510 MFIE_TYPE_HOP_PARAMS = 8,
511 MFIE_TYPE_HOP_TABLE = 9,
512 MFIE_TYPE_REQUEST = 10,
513 MFIE_TYPE_CHALLENGE = 16,
514 MFIE_TYPE_POWER_CONSTRAINT = 32,
515 MFIE_TYPE_POWER_CAPABILITY = 33,
516 MFIE_TYPE_TPC_REQUEST = 34,
517 MFIE_TYPE_TPC_REPORT = 35,
518 MFIE_TYPE_SUPP_CHANNELS = 36,
519 MFIE_TYPE_CSA = 37,
520 MFIE_TYPE_MEASURE_REQUEST = 38,
521 MFIE_TYPE_MEASURE_REPORT = 39,
522 MFIE_TYPE_QUIET = 40,
523 MFIE_TYPE_IBSS_DFS = 41,
524 MFIE_TYPE_ERP_INFO = 42,
525 MFIE_TYPE_RSN = 48,
526 MFIE_TYPE_RATES_EX = 50,
527 MFIE_TYPE_GENERIC = 221,
528 MFIE_TYPE_QOS_PARAMETER = 222,
529};
530
531/* Minimal header; can be used for passing 802.11 frames with sufficient
532 * information to determine what type of underlying data type is actually
533 * stored in the data. */
534struct ieee80211_hdr {
535 __le16 frame_ctl;
536 __le16 duration_id;
537 u8 payload[0];
538} __attribute__ ((packed));
539
540struct ieee80211_hdr_1addr {
541 __le16 frame_ctl;
542 __le16 duration_id;
543 u8 addr1[ETH_ALEN];
544 u8 payload[0];
545} __attribute__ ((packed));
546
547struct ieee80211_hdr_2addr {
548 __le16 frame_ctl;
549 __le16 duration_id;
550 u8 addr1[ETH_ALEN];
551 u8 addr2[ETH_ALEN];
552 u8 payload[0];
553} __attribute__ ((packed));
554
555struct ieee80211_hdr_3addr {
556 __le16 frame_ctl;
557 __le16 duration_id;
558 u8 addr1[ETH_ALEN];
559 u8 addr2[ETH_ALEN];
560 u8 addr3[ETH_ALEN];
561 __le16 seq_ctl;
562 u8 payload[0];
563} __attribute__ ((packed));
564
565struct ieee80211_hdr_4addr {
566 __le16 frame_ctl;
567 __le16 duration_id;
568 u8 addr1[ETH_ALEN];
569 u8 addr2[ETH_ALEN];
570 u8 addr3[ETH_ALEN];
571 __le16 seq_ctl;
572 u8 addr4[ETH_ALEN];
573 u8 payload[0];
574} __attribute__ ((packed));
575
576struct ieee80211_hdr_3addrqos {
577 __le16 frame_ctl;
578 __le16 duration_id;
579 u8 addr1[ETH_ALEN];
580 u8 addr2[ETH_ALEN];
581 u8 addr3[ETH_ALEN];
582 __le16 seq_ctl;
583 u8 payload[0];
584 __le16 qos_ctl;
585} __attribute__ ((packed));
586
587struct ieee80211_hdr_4addrqos {
588 __le16 frame_ctl;
589 __le16 duration_id;
590 u8 addr1[ETH_ALEN];
591 u8 addr2[ETH_ALEN];
592 u8 addr3[ETH_ALEN];
593 __le16 seq_ctl;
594 u8 addr4[ETH_ALEN];
595 u8 payload[0];
596 __le16 qos_ctl;
597} __attribute__ ((packed));
598
599struct ieee80211_info_element {
600 u8 id;
601 u8 len;
602 u8 data[0];
603} __attribute__ ((packed));
604
605/*
606 * These are the data types that can make up management packets
607 *
608 u16 auth_algorithm;
609 u16 auth_sequence;
610 u16 beacon_interval;
611 u16 capability;
612 u8 current_ap[ETH_ALEN];
613 u16 listen_interval;
614 struct {
615 u16 association_id:14, reserved:2;
616 } __attribute__ ((packed));
617 u32 time_stamp[2];
618 u16 reason;
619 u16 status;
620*/
621
622struct ieee80211_auth {
623 struct ieee80211_hdr_3addr header;
624 __le16 algorithm;
625 __le16 transaction;
626 __le16 status;
627 /* challenge */
628 struct ieee80211_info_element info_element[0];
629} __attribute__ ((packed));
630
631struct ieee80211_channel_switch {
632 u8 id;
633 u8 len;
634 u8 mode;
635 u8 channel;
636 u8 count;
637} __attribute__ ((packed));
638
639struct ieee80211_action {
640 struct ieee80211_hdr_3addr header;
641 u8 category;
642 u8 action;
643 union {
644 struct ieee80211_action_exchange {
645 u8 token;
646 struct ieee80211_info_element info_element[0];
647 } exchange;
648 struct ieee80211_channel_switch channel_switch;
649
650 } format;
651} __attribute__ ((packed));
652
653struct ieee80211_disassoc {
654 struct ieee80211_hdr_3addr header;
655 __le16 reason;
656} __attribute__ ((packed));
657
658/* Alias deauth for disassoc */
659#define ieee80211_deauth ieee80211_disassoc
660
661struct ieee80211_probe_request {
662 struct ieee80211_hdr_3addr header;
663 /* SSID, supported rates */
664 struct ieee80211_info_element info_element[0];
665} __attribute__ ((packed));
666
667struct ieee80211_probe_response {
668 struct ieee80211_hdr_3addr header;
669 u32 time_stamp[2];
670 __le16 beacon_interval;
671 __le16 capability;
672 /* SSID, supported rates, FH params, DS params,
673 * CF params, IBSS params, TIM (if beacon), RSN */
674 struct ieee80211_info_element info_element[0];
675} __attribute__ ((packed));
676
677/* Alias beacon for probe_response */
678#define ieee80211_beacon ieee80211_probe_response
679
680struct ieee80211_assoc_request {
681 struct ieee80211_hdr_3addr header;
682 __le16 capability;
683 __le16 listen_interval;
684 /* SSID, supported rates, RSN */
685 struct ieee80211_info_element info_element[0];
686} __attribute__ ((packed));
687
688struct ieee80211_reassoc_request {
689 struct ieee80211_hdr_3addr header;
690 __le16 capability;
691 __le16 listen_interval;
692 u8 current_ap[ETH_ALEN];
693 struct ieee80211_info_element info_element[0];
694} __attribute__ ((packed));
695
696struct ieee80211_assoc_response {
697 struct ieee80211_hdr_3addr header;
698 __le16 capability;
699 __le16 status;
700 __le16 aid;
701 /* supported rates */
702 struct ieee80211_info_element info_element[0];
703} __attribute__ ((packed));
704
705struct ieee80211_txb {
706 u8 nr_frags;
707 u8 encrypted;
708 u8 rts_included;
709 u8 reserved;
710 __le16 frag_size;
711 __le16 payload_size;
712 struct sk_buff *fragments[0];
713};
714
715/* SWEEP TABLE ENTRIES NUMBER */
716#define MAX_SWEEP_TAB_ENTRIES 42
717#define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
718/* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
719 * only use 8, and then use extended rates for the remaining supported
720 * rates. Other APs, however, stick all of their supported rates on the
721 * main rates information element... */
722#define MAX_RATES_LENGTH ((u8)12)
723#define MAX_RATES_EX_LENGTH ((u8)16)
724#define MAX_NETWORK_COUNT 128
725
726#define CRC_LENGTH 4U
727
728#define MAX_WPA_IE_LEN 64
729
730#define NETWORK_EMPTY_ESSID (1<<0)
731#define NETWORK_HAS_OFDM (1<<1)
732#define NETWORK_HAS_CCK (1<<2)
733
734/* QoS structure */
735#define NETWORK_HAS_QOS_PARAMETERS (1<<3)
736#define NETWORK_HAS_QOS_INFORMATION (1<<4)
737#define NETWORK_HAS_QOS_MASK (NETWORK_HAS_QOS_PARAMETERS | \
738 NETWORK_HAS_QOS_INFORMATION)
739
740/* 802.11h */
741#define NETWORK_HAS_POWER_CONSTRAINT (1<<5)
742#define NETWORK_HAS_CSA (1<<6)
743#define NETWORK_HAS_QUIET (1<<7)
744#define NETWORK_HAS_IBSS_DFS (1<<8)
745#define NETWORK_HAS_TPC_REPORT (1<<9)
746
747#define QOS_QUEUE_NUM 4
748#define QOS_OUI_LEN 3
749#define QOS_OUI_TYPE 2
750#define QOS_ELEMENT_ID 221
751#define QOS_OUI_INFO_SUB_TYPE 0
752#define QOS_OUI_PARAM_SUB_TYPE 1
753#define QOS_VERSION_1 1
754#define QOS_AIFSN_MIN_VALUE 2
755
756struct ieee80211_qos_information_element {
757 u8 elementID;
758 u8 length;
759 u8 qui[QOS_OUI_LEN];
760 u8 qui_type;
761 u8 qui_subtype;
762 u8 version;
763 u8 ac_info;
764} __attribute__ ((packed));
765
766struct ieee80211_qos_ac_parameter {
767 u8 aci_aifsn;
768 u8 ecw_min_max;
769 __le16 tx_op_limit;
770} __attribute__ ((packed));
771
772struct ieee80211_qos_parameter_info {
773 struct ieee80211_qos_information_element info_element;
774 u8 reserved;
775 struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
776} __attribute__ ((packed));
777
778struct ieee80211_qos_parameters {
779 __le16 cw_min[QOS_QUEUE_NUM];
780 __le16 cw_max[QOS_QUEUE_NUM];
781 u8 aifs[QOS_QUEUE_NUM];
782 u8 flag[QOS_QUEUE_NUM];
783 __le16 tx_op_limit[QOS_QUEUE_NUM];
784} __attribute__ ((packed));
785
786struct ieee80211_qos_data {
787 struct ieee80211_qos_parameters parameters;
788 int active;
789 int supported;
790 u8 param_count;
791 u8 old_param_count;
792};
793
794struct ieee80211_tim_parameters {
795 u8 tim_count;
796 u8 tim_period;
797} __attribute__ ((packed));
798
799/*******************************************************/
800
801enum { /* ieee80211_basic_report.map */
802 IEEE80211_BASIC_MAP_BSS = (1 << 0),
803 IEEE80211_BASIC_MAP_OFDM = (1 << 1),
804 IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2),
805 IEEE80211_BASIC_MAP_RADAR = (1 << 3),
806 IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4),
807 /* Bits 5-7 are reserved */
808
809};
810struct ieee80211_basic_report {
811 u8 channel;
812 __le64 start_time;
813 __le16 duration;
814 u8 map;
815} __attribute__ ((packed));
816
817enum { /* ieee80211_measurement_request.mode */
818 /* Bit 0 is reserved */
819 IEEE80211_MEASUREMENT_ENABLE = (1 << 1),
820 IEEE80211_MEASUREMENT_REQUEST = (1 << 2),
821 IEEE80211_MEASUREMENT_REPORT = (1 << 3),
822 /* Bits 4-7 are reserved */
823};
824
825enum {
826 IEEE80211_REPORT_BASIC = 0, /* required */
827 IEEE80211_REPORT_CCA = 1, /* optional */
828 IEEE80211_REPORT_RPI = 2, /* optional */
829 /* 3-255 reserved */
830};
831
832struct ieee80211_measurement_params {
833 u8 channel;
834 __le64 start_time;
835 __le16 duration;
836} __attribute__ ((packed));
837
838struct ieee80211_measurement_request {
839 struct ieee80211_info_element ie;
840 u8 token;
841 u8 mode;
842 u8 type;
843 struct ieee80211_measurement_params params[0];
844} __attribute__ ((packed));
845
846struct ieee80211_measurement_report {
847 struct ieee80211_info_element ie;
848 u8 token;
849 u8 mode;
850 u8 type;
851 union {
852 struct ieee80211_basic_report basic[0];
853 } u;
854} __attribute__ ((packed));
855
856struct ieee80211_tpc_report {
857 u8 transmit_power;
858 u8 link_margin;
859} __attribute__ ((packed));
860
861struct ieee80211_channel_map {
862 u8 channel;
863 u8 map;
864} __attribute__ ((packed));
865
866struct ieee80211_ibss_dfs {
867 struct ieee80211_info_element ie;
868 u8 owner[ETH_ALEN];
869 u8 recovery_interval;
870 struct ieee80211_channel_map channel_map[0];
871};
872
873struct ieee80211_csa {
874 u8 mode;
875 u8 channel;
876 u8 count;
877} __attribute__ ((packed));
878
879struct ieee80211_quiet {
880 u8 count;
881 u8 period;
882 u8 duration;
883 u8 offset;
884} __attribute__ ((packed));
885
886struct ieee80211_network {
887 /* These entries are used to identify a unique network */
888 u8 bssid[ETH_ALEN];
889 u8 channel;
890 /* Ensure null-terminated for any debug msgs */
891 u8 ssid[IW_ESSID_MAX_SIZE + 1];
892 u8 ssid_len;
893
894 struct ieee80211_qos_data qos_data;
895
896 /* These are network statistics */
897 struct ieee80211_rx_stats stats;
898 u16 capability;
899 u8 rates[MAX_RATES_LENGTH];
900 u8 rates_len;
901 u8 rates_ex[MAX_RATES_EX_LENGTH];
902 u8 rates_ex_len;
903 unsigned long last_scanned;
904 u8 mode;
905 u32 flags;
906 u32 last_associate;
907 u32 time_stamp[2];
908 u16 beacon_interval;
909 u16 listen_interval;
910 u16 atim_window;
911 u8 erp_value;
912 u8 wpa_ie[MAX_WPA_IE_LEN];
913 size_t wpa_ie_len;
914 u8 rsn_ie[MAX_WPA_IE_LEN];
915 size_t rsn_ie_len;
916 struct ieee80211_tim_parameters tim;
917
918 /* 802.11h info */
919
920 /* Power Constraint - mandatory if spctrm mgmt required */
921 u8 power_constraint;
922
923 /* TPC Report - mandatory if spctrm mgmt required */
924 struct ieee80211_tpc_report tpc_report;
925
926 /* IBSS DFS - mandatory if spctrm mgmt required and IBSS
927 * NOTE: This is variable length and so must be allocated dynamically */
928 struct ieee80211_ibss_dfs *ibss_dfs;
929
930 /* Channel Switch Announcement - optional if spctrm mgmt required */
931 struct ieee80211_csa csa;
932
933 /* Quiet - optional if spctrm mgmt required */
934 struct ieee80211_quiet quiet;
935
936 struct list_head list;
937};
938
939enum ieee80211_state {
940 IEEE80211_UNINITIALIZED = 0,
941 IEEE80211_INITIALIZED,
942 IEEE80211_ASSOCIATING,
943 IEEE80211_ASSOCIATED,
944 IEEE80211_AUTHENTICATING,
945 IEEE80211_AUTHENTICATED,
946 IEEE80211_SHUTDOWN
947};
948
949#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
950#define DEFAULT_FTS 2346
951
952#define CFG_IEEE80211_RESERVE_FCS (1<<0)
953#define CFG_IEEE80211_COMPUTE_FCS (1<<1)
954#define CFG_IEEE80211_RTS (1<<2)
955
956#define IEEE80211_24GHZ_MIN_CHANNEL 1
957#define IEEE80211_24GHZ_MAX_CHANNEL 14
958#define IEEE80211_24GHZ_CHANNELS 14
959
960#define IEEE80211_52GHZ_MIN_CHANNEL 34
961#define IEEE80211_52GHZ_MAX_CHANNEL 165
962#define IEEE80211_52GHZ_CHANNELS 131
963
964enum {
965 IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
966 IEEE80211_CH_B_ONLY = (1 << 2),
967 IEEE80211_CH_NO_IBSS = (1 << 3),
968 IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
969 IEEE80211_CH_RADAR_DETECT = (1 << 5),
970 IEEE80211_CH_INVALID = (1 << 6),
971};
972
973struct ieee80211_channel {
974 u32 freq;
975 u8 channel;
976 u8 flags;
977 u8 max_power;
978};
979
980struct ieee80211_geo {
981 u8 name[4];
982 u8 bg_channels;
983 u8 a_channels;
984 struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
985 struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
986};
987
988struct ieee80211_device {
989 struct net_device *dev;
990 struct ieee80211_security sec;
991
992 /* Bookkeeping structures */
993 struct net_device_stats stats;
994 struct ieee80211_stats ieee_stats;
995
996 struct ieee80211_geo geo;
997
998 /* Probe / Beacon management */
999 struct list_head network_free_list;
1000 struct list_head network_list;
1001 struct ieee80211_network *networks;
1002 int scans;
1003 int scan_age;
1004
1005 int iw_mode; /* operating mode (IW_MODE_*) */
1006 struct iw_spy_data spy_data; /* iwspy support */
1007
1008 spinlock_t lock;
1009
1010 int tx_headroom; /* Set to size of any additional room needed at front
1011 * of allocated Tx SKBs */
1012 u32 config;
1013
1014 /* WEP and other encryption related settings at the device level */
1015 int open_wep; /* Set to 1 to allow unencrypted frames */
1016
1017 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
1018 * WEP key changes */
1019
1020 /* If the host performs {en,de}cryption, then set to 1 */
1021 int host_encrypt;
1022 int host_encrypt_msdu;
1023 int host_decrypt;
1024 /* host performs multicast decryption */
1025 int host_mc_decrypt;
1026
1027 int host_open_frag;
1028 int host_build_iv;
1029 int ieee802_1x; /* is IEEE 802.1X used */
1030
1031 /* WPA data */
1032 int wpa_enabled;
1033 int drop_unencrypted;
1034 int privacy_invoked;
1035 size_t wpa_ie_len;
1036 u8 *wpa_ie;
1037
1038 struct list_head crypt_deinit_list;
1039 struct ieee80211_crypt_data *crypt[WEP_KEYS];
1040 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
1041 struct timer_list crypt_deinit_timer;
1042 int crypt_quiesced;
1043
1044 int bcrx_sta_key; /* use individual keys to override default keys even
1045 * with RX of broad/multicast frames */
1046
1047 /* Fragmentation structures */
1048 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
1049 unsigned int frag_next_idx;
1050 u16 fts; /* Fragmentation Threshold */
1051 u16 rts; /* RTS threshold */
1052
1053 /* Association info */
1054 u8 bssid[ETH_ALEN];
1055
1056 enum ieee80211_state state;
1057
1058 int mode; /* A, B, G */
1059 int modulation; /* CCK, OFDM */
1060 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
1061 int abg_true; /* ABG flag */
1062
1063 int perfect_rssi;
1064 int worst_rssi;
1065
1066 /* Callback functions */
1067 void (*set_security) (struct net_device * dev,
1068 struct ieee80211_security * sec);
1069 int (*hard_start_xmit) (struct ieee80211_txb * txb,
1070 struct net_device * dev, int pri);
1071 int (*reset_port) (struct net_device * dev);
1072 int (*is_queue_full) (struct net_device * dev, int pri);
1073
1074 int (*handle_management) (struct net_device * dev,
1075 struct ieee80211_network * network, u16 type);
1076
1077 /* Typical STA methods */
1078 int (*handle_auth) (struct net_device * dev,
1079 struct ieee80211_auth * auth);
1080 int (*handle_deauth) (struct net_device * dev,
1081 struct ieee80211_deauth * auth);
1082 int (*handle_action) (struct net_device * dev,
1083 struct ieee80211_action * action,
1084 struct ieee80211_rx_stats * stats);
1085 int (*handle_disassoc) (struct net_device * dev,
1086 struct ieee80211_disassoc * assoc);
1087 int (*handle_beacon) (struct net_device * dev,
1088 struct ieee80211_beacon * beacon,
1089 struct ieee80211_network * network);
1090 int (*handle_probe_response) (struct net_device * dev,
1091 struct ieee80211_probe_response * resp,
1092 struct ieee80211_network * network);
1093 int (*handle_probe_request) (struct net_device * dev,
1094 struct ieee80211_probe_request * req,
1095 struct ieee80211_rx_stats * stats);
1096 int (*handle_assoc_response) (struct net_device * dev,
1097 struct ieee80211_assoc_response * resp,
1098 struct ieee80211_network * network);
1099
1100 /* Typical AP methods */
1101 int (*handle_assoc_request) (struct net_device * dev);
1102 int (*handle_reassoc_request) (struct net_device * dev,
1103 struct ieee80211_reassoc_request * req);
1104
1105 /* This must be the last item so that it points to the data
1106 * allocated beyond this structure by alloc_ieee80211 */
1107 u8 priv[0];
1108};
1109
1110#define IEEE_A (1<<0)
1111#define IEEE_B (1<<1)
1112#define IEEE_G (1<<2)
1113#define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
1114
1115static inline void *ieee80211_priv(struct net_device *dev)
1116{
1117 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
1118}
1119
1120static inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
1121{
1122 /* Single white space is for Linksys APs */
1123 if (essid_len == 1 && essid[0] == ' ')
1124 return 1;
1125
1126 /* Otherwise, if the entire essid is 0, we assume it is hidden */
1127 while (essid_len) {
1128 essid_len--;
1129 if (essid[essid_len] != '\0')
1130 return 0;
1131 }
1132
1133 return 1;
1134}
1135
1136static inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
1137 int mode)
1138{
1139 /*
1140 * It is possible for both access points and our device to support
1141 * combinations of modes, so as long as there is one valid combination
1142 * of ap/device supported modes, then return success
1143 *
1144 */
1145 if ((mode & IEEE_A) &&
1146 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1147 (ieee->freq_band & IEEE80211_52GHZ_BAND))
1148 return 1;
1149
1150 if ((mode & IEEE_G) &&
1151 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1152 (ieee->freq_band & IEEE80211_24GHZ_BAND))
1153 return 1;
1154
1155 if ((mode & IEEE_B) &&
1156 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
1157 (ieee->freq_band & IEEE80211_24GHZ_BAND))
1158 return 1;
1159
1160 return 0;
1161}
1162
1163static inline int ieee80211_get_hdrlen(u16 fc)
1164{
1165 int hdrlen = IEEE80211_3ADDR_LEN;
1166 u16 stype = WLAN_FC_GET_STYPE(fc);
1167
1168 switch (WLAN_FC_GET_TYPE(fc)) {
1169 case IEEE80211_FTYPE_DATA:
1170 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
1171 hdrlen = IEEE80211_4ADDR_LEN;
1172 if (stype & IEEE80211_STYPE_QOS_DATA)
1173 hdrlen += 2;
1174 break;
1175 case IEEE80211_FTYPE_CTL:
1176 switch (WLAN_FC_GET_STYPE(fc)) {
1177 case IEEE80211_STYPE_CTS:
1178 case IEEE80211_STYPE_ACK:
1179 hdrlen = IEEE80211_1ADDR_LEN;
1180 break;
1181 default:
1182 hdrlen = IEEE80211_2ADDR_LEN;
1183 break;
1184 }
1185 break;
1186 }
1187
1188 return hdrlen;
1189}
1190
1191static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
1192{
1193 switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
1194 case IEEE80211_1ADDR_LEN:
1195 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
1196 case IEEE80211_2ADDR_LEN:
1197 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
1198 case IEEE80211_3ADDR_LEN:
1199 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
1200 case IEEE80211_4ADDR_LEN:
1201 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
1202 }
1203 return NULL;
1204}
1205
1206static inline int ieee80211_is_ofdm_rate(u8 rate)
1207{
1208 switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1209 case IEEE80211_OFDM_RATE_6MB:
1210 case IEEE80211_OFDM_RATE_9MB:
1211 case IEEE80211_OFDM_RATE_12MB:
1212 case IEEE80211_OFDM_RATE_18MB:
1213 case IEEE80211_OFDM_RATE_24MB:
1214 case IEEE80211_OFDM_RATE_36MB:
1215 case IEEE80211_OFDM_RATE_48MB:
1216 case IEEE80211_OFDM_RATE_54MB:
1217 return 1;
1218 }
1219 return 0;
1220}
1221
1222static inline int ieee80211_is_cck_rate(u8 rate)
1223{
1224 switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1225 case IEEE80211_CCK_RATE_1MB:
1226 case IEEE80211_CCK_RATE_2MB:
1227 case IEEE80211_CCK_RATE_5MB:
1228 case IEEE80211_CCK_RATE_11MB:
1229 return 1;
1230 }
1231 return 0;
1232}
1233
1234/* ieee80211.c */
1235extern void free_ieee80211(struct net_device *dev);
1236extern struct net_device *alloc_ieee80211(int sizeof_priv);
1237
1238extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1239
1240/* ieee80211_tx.c */
1241extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1242extern void ieee80211_txb_free(struct ieee80211_txb *);
1243extern int ieee80211_tx_frame(struct ieee80211_device *ieee,
1244 struct ieee80211_hdr *frame, int len);
1245
1246/* ieee80211_rx.c */
1247extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
1248 struct ieee80211_rx_stats *rx_stats);
1249/* make sure to set stats->len */
1250extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1251 struct ieee80211_hdr_4addr *header,
1252 struct ieee80211_rx_stats *stats);
1253extern void ieee80211_network_reset(struct ieee80211_network *network);
1254
1255/* ieee80211_geo.c */
1256extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1257 *ieee);
1258extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1259 const struct ieee80211_geo *geo);
1260
1261extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1262 u8 channel);
1263extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1264 u8 channel);
1265extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1266extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
1267 u8 channel);
1268extern const struct ieee80211_channel *ieee80211_get_channel(struct
1269 ieee80211_device
1270 *ieee, u8 channel);
1271
1272/* ieee80211_wx.c */
1273extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1274 struct iw_request_info *info,
1275 union iwreq_data *wrqu, char *key);
1276extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1277 struct iw_request_info *info,
1278 union iwreq_data *wrqu, char *key);
1279extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1280 struct iw_request_info *info,
1281 union iwreq_data *wrqu, char *key);
1282extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1283 struct iw_request_info *info,
1284 union iwreq_data *wrqu, char *extra);
1285extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1286 struct iw_request_info *info,
1287 union iwreq_data *wrqu, char *extra);
1288extern int ieee80211_wx_set_auth(struct net_device *dev,
1289 struct iw_request_info *info,
1290 union iwreq_data *wrqu,
1291 char *extra);
1292extern int ieee80211_wx_get_auth(struct net_device *dev,
1293 struct iw_request_info *info,
1294 union iwreq_data *wrqu,
1295 char *extra);
1296
1297static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1298{
1299 ieee->scans++;
1300}
1301
1302static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1303{
1304 return ieee->scans;
1305}
1306
1307#endif /* IEEE80211_H */