tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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-1.1.13"
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/* QOS control */
108#define IEEE80211_QCTL_TID 0x000F
109
110/* debug macros */
111
112#ifdef CONFIG_IEEE80211_DEBUG
113extern u32 ieee80211_debug_level;
114#define IEEE80211_DEBUG(level, fmt, args...) \
115do { if (ieee80211_debug_level & (level)) \
116 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
117 in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
118#else
119#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
120#endif /* CONFIG_IEEE80211_DEBUG */
121
122/* debug macros not dependent on CONFIG_IEEE80211_DEBUG */
123
124#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
125#define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
126
127/* escape_essid() is intended to be used in debug (and possibly error)
128 * messages. It should never be used for passing essid to user space. */
129const char *escape_essid(const char *essid, u8 essid_len);
130
131/*
132 * To use the debug system:
133 *
134 * If you are defining a new debug classification, simply add it to the #define
135 * list here in the form of:
136 *
137 * #define IEEE80211_DL_xxxx VALUE
138 *
139 * shifting value to the left one bit from the previous entry. xxxx should be
140 * the name of the classification (for example, WEP)
141 *
142 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
143 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
144 * to send output to that classification.
145 *
146 * To add your debug level to the list of levels seen when you perform
147 *
148 * % cat /proc/net/ieee80211/debug_level
149 *
150 * you simply need to add your entry to the ieee80211_debug_level array.
151 *
152 * If you do not see debug_level in /proc/net/ieee80211 then you do not have
153 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
154 *
155 */
156
157#define IEEE80211_DL_INFO (1<<0)
158#define IEEE80211_DL_WX (1<<1)
159#define IEEE80211_DL_SCAN (1<<2)
160#define IEEE80211_DL_STATE (1<<3)
161#define IEEE80211_DL_MGMT (1<<4)
162#define IEEE80211_DL_FRAG (1<<5)
163#define IEEE80211_DL_DROP (1<<7)
164
165#define IEEE80211_DL_TX (1<<8)
166#define IEEE80211_DL_RX (1<<9)
167#define IEEE80211_DL_QOS (1<<31)
168
169#define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
170#define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
171#define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
172
173#define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
174#define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
175#define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
176#define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
177#define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
178#define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
179#define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
180#define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
181#define IEEE80211_DEBUG_QOS(f, a...) IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
182#include <linux/netdevice.h>
183#include <linux/wireless.h>
184#include <linux/if_arp.h> /* ARPHRD_ETHER */
185
186#ifndef WIRELESS_SPY
187#define WIRELESS_SPY /* enable iwspy support */
188#endif
189#include <net/iw_handler.h> /* new driver API */
190
191#ifndef ETH_P_PAE
192#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
193#endif /* ETH_P_PAE */
194
195#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
196
197#ifndef ETH_P_80211_RAW
198#define ETH_P_80211_RAW (ETH_P_ECONET + 1)
199#endif
200
201/* IEEE 802.11 defines */
202
203#define P80211_OUI_LEN 3
204
205struct ieee80211_snap_hdr {
206
207 u8 dsap; /* always 0xAA */
208 u8 ssap; /* always 0xAA */
209 u8 ctrl; /* always 0x03 */
210 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
211
212} __attribute__ ((packed));
213
214#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
215
216#define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
217#define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
218#define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
219
220#define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
221#define WLAN_GET_SEQ_SEQ(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
222
223/* Authentication algorithms */
224#define WLAN_AUTH_OPEN 0
225#define WLAN_AUTH_SHARED_KEY 1
226#define WLAN_AUTH_LEAP 2
227
228#define WLAN_AUTH_CHALLENGE_LEN 128
229
230#define WLAN_CAPABILITY_ESS (1<<0)
231#define WLAN_CAPABILITY_IBSS (1<<1)
232#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
233#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
234#define WLAN_CAPABILITY_PRIVACY (1<<4)
235#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
236#define WLAN_CAPABILITY_PBCC (1<<6)
237#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
238#define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
239#define WLAN_CAPABILITY_QOS (1<<9)
240#define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
241#define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
242
243/* 802.11g ERP information element */
244#define WLAN_ERP_NON_ERP_PRESENT (1<<0)
245#define WLAN_ERP_USE_PROTECTION (1<<1)
246#define WLAN_ERP_BARKER_PREAMBLE (1<<2)
247
248/* Status codes */
249enum ieee80211_statuscode {
250 WLAN_STATUS_SUCCESS = 0,
251 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
252 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
253 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
254 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
255 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
256 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
257 WLAN_STATUS_CHALLENGE_FAIL = 15,
258 WLAN_STATUS_AUTH_TIMEOUT = 16,
259 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
260 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
261 /* 802.11b */
262 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
263 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
264 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
265 /* 802.11h */
266 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
267 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
268 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
269 /* 802.11g */
270 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
271 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
272 /* 802.11i */
273 WLAN_STATUS_INVALID_IE = 40,
274 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
275 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
276 WLAN_STATUS_INVALID_AKMP = 43,
277 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
278 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
279 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
280};
281
282/* Reason codes */
283enum ieee80211_reasoncode {
284 WLAN_REASON_UNSPECIFIED = 1,
285 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
286 WLAN_REASON_DEAUTH_LEAVING = 3,
287 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
288 WLAN_REASON_DISASSOC_AP_BUSY = 5,
289 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
290 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
291 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
292 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
293 /* 802.11h */
294 WLAN_REASON_DISASSOC_BAD_POWER = 10,
295 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
296 /* 802.11i */
297 WLAN_REASON_INVALID_IE = 13,
298 WLAN_REASON_MIC_FAILURE = 14,
299 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
300 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
301 WLAN_REASON_IE_DIFFERENT = 17,
302 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
303 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
304 WLAN_REASON_INVALID_AKMP = 20,
305 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
306 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
307 WLAN_REASON_IEEE8021X_FAILED = 23,
308 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
309};
310
311/* Action categories - 802.11h */
312enum ieee80211_actioncategories {
313 WLAN_ACTION_SPECTRUM_MGMT = 0,
314 /* Reserved 1-127 */
315 /* Error 128-255 */
316};
317
318/* Action details - 802.11h */
319enum ieee80211_actiondetails {
320 WLAN_ACTION_CATEGORY_MEASURE_REQUEST = 0,
321 WLAN_ACTION_CATEGORY_MEASURE_REPORT = 1,
322 WLAN_ACTION_CATEGORY_TPC_REQUEST = 2,
323 WLAN_ACTION_CATEGORY_TPC_REPORT = 3,
324 WLAN_ACTION_CATEGORY_CHANNEL_SWITCH = 4,
325 /* 5 - 255 Reserved */
326};
327
328#define IEEE80211_STATMASK_SIGNAL (1<<0)
329#define IEEE80211_STATMASK_RSSI (1<<1)
330#define IEEE80211_STATMASK_NOISE (1<<2)
331#define IEEE80211_STATMASK_RATE (1<<3)
332#define IEEE80211_STATMASK_WEMASK 0x7
333
334#define IEEE80211_CCK_MODULATION (1<<0)
335#define IEEE80211_OFDM_MODULATION (1<<1)
336
337#define IEEE80211_24GHZ_BAND (1<<0)
338#define IEEE80211_52GHZ_BAND (1<<1)
339
340#define IEEE80211_CCK_RATE_1MB 0x02
341#define IEEE80211_CCK_RATE_2MB 0x04
342#define IEEE80211_CCK_RATE_5MB 0x0B
343#define IEEE80211_CCK_RATE_11MB 0x16
344#define IEEE80211_OFDM_RATE_6MB 0x0C
345#define IEEE80211_OFDM_RATE_9MB 0x12
346#define IEEE80211_OFDM_RATE_12MB 0x18
347#define IEEE80211_OFDM_RATE_18MB 0x24
348#define IEEE80211_OFDM_RATE_24MB 0x30
349#define IEEE80211_OFDM_RATE_36MB 0x48
350#define IEEE80211_OFDM_RATE_48MB 0x60
351#define IEEE80211_OFDM_RATE_54MB 0x6C
352#define IEEE80211_BASIC_RATE_MASK 0x80
353
354#define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
355#define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
356#define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
357#define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
358#define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
359#define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
360#define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
361#define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
362#define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
363#define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
364#define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
365#define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
366
367#define IEEE80211_CCK_RATES_MASK 0x0000000F
368#define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
369 IEEE80211_CCK_RATE_2MB_MASK)
370#define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
371 IEEE80211_CCK_RATE_5MB_MASK | \
372 IEEE80211_CCK_RATE_11MB_MASK)
373
374#define IEEE80211_OFDM_RATES_MASK 0x00000FF0
375#define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
376 IEEE80211_OFDM_RATE_12MB_MASK | \
377 IEEE80211_OFDM_RATE_24MB_MASK)
378#define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
379 IEEE80211_OFDM_RATE_9MB_MASK | \
380 IEEE80211_OFDM_RATE_18MB_MASK | \
381 IEEE80211_OFDM_RATE_36MB_MASK | \
382 IEEE80211_OFDM_RATE_48MB_MASK | \
383 IEEE80211_OFDM_RATE_54MB_MASK)
384#define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
385 IEEE80211_CCK_DEFAULT_RATES_MASK)
386
387#define IEEE80211_NUM_OFDM_RATES 8
388#define IEEE80211_NUM_CCK_RATES 4
389#define IEEE80211_OFDM_SHIFT_MASK_A 4
390
391/* NOTE: This data is for statistical purposes; not all hardware provides this
392 * information for frames received.
393 * For ieee80211_rx_mgt, you need to set at least the 'len' parameter.
394 */
395struct ieee80211_rx_stats {
396 u32 mac_time;
397 s8 rssi;
398 u8 signal;
399 u8 noise;
400 u16 rate; /* in 100 kbps */
401 u8 received_channel;
402 u8 control;
403 u8 mask;
404 u8 freq;
405 u16 len;
406 u64 tsf;
407 u32 beacon_time;
408};
409
410/* IEEE 802.11 requires that STA supports concurrent reception of at least
411 * three fragmented frames. This define can be increased to support more
412 * concurrent frames, but it should be noted that each entry can consume about
413 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
414#define IEEE80211_FRAG_CACHE_LEN 4
415
416struct ieee80211_frag_entry {
417 unsigned long first_frag_time;
418 unsigned int seq;
419 unsigned int last_frag;
420 struct sk_buff *skb;
421 u8 src_addr[ETH_ALEN];
422 u8 dst_addr[ETH_ALEN];
423};
424
425struct ieee80211_stats {
426 unsigned int tx_unicast_frames;
427 unsigned int tx_multicast_frames;
428 unsigned int tx_fragments;
429 unsigned int tx_unicast_octets;
430 unsigned int tx_multicast_octets;
431 unsigned int tx_deferred_transmissions;
432 unsigned int tx_single_retry_frames;
433 unsigned int tx_multiple_retry_frames;
434 unsigned int tx_retry_limit_exceeded;
435 unsigned int tx_discards;
436 unsigned int rx_unicast_frames;
437 unsigned int rx_multicast_frames;
438 unsigned int rx_fragments;
439 unsigned int rx_unicast_octets;
440 unsigned int rx_multicast_octets;
441 unsigned int rx_fcs_errors;
442 unsigned int rx_discards_no_buffer;
443 unsigned int tx_discards_wrong_sa;
444 unsigned int rx_discards_undecryptable;
445 unsigned int rx_message_in_msg_fragments;
446 unsigned int rx_message_in_bad_msg_fragments;
447};
448
449struct ieee80211_device;
450
451#include "ieee80211_crypt.h"
452
453#define SEC_KEY_1 (1<<0)
454#define SEC_KEY_2 (1<<1)
455#define SEC_KEY_3 (1<<2)
456#define SEC_KEY_4 (1<<3)
457#define SEC_ACTIVE_KEY (1<<4)
458#define SEC_AUTH_MODE (1<<5)
459#define SEC_UNICAST_GROUP (1<<6)
460#define SEC_LEVEL (1<<7)
461#define SEC_ENABLED (1<<8)
462#define SEC_ENCRYPT (1<<9)
463
464#define SEC_LEVEL_0 0 /* None */
465#define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
466#define SEC_LEVEL_2 2 /* Level 1 + TKIP */
467#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
468#define SEC_LEVEL_3 4 /* Level 2 + CCMP */
469
470#define SEC_ALG_NONE 0
471#define SEC_ALG_WEP 1
472#define SEC_ALG_TKIP 2
473#define SEC_ALG_CCMP 3
474
475#define WEP_KEYS 4
476#define WEP_KEY_LEN 13
477#define SCM_KEY_LEN 32
478#define SCM_TEMPORAL_KEY_LENGTH 16
479
480struct ieee80211_security {
481 u16 active_key:2,
482 enabled:1,
483 auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
484 u8 encode_alg[WEP_KEYS];
485 u8 key_sizes[WEP_KEYS];
486 u8 keys[WEP_KEYS][SCM_KEY_LEN];
487 u8 level;
488 u16 flags;
489} __attribute__ ((packed));
490
491/*
492
493 802.11 data frame from AP
494
495 ,-------------------------------------------------------------------.
496Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
497 |------|------|---------|---------|---------|------|---------|------|
498Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
499 | | tion | (BSSID) | | | ence | data | |
500 `-------------------------------------------------------------------'
501
502Total: 28-2340 bytes
503
504*/
505
506#define BEACON_PROBE_SSID_ID_POSITION 12
507
508/* Management Frame Information Element Types */
509enum ieee80211_mfie {
510 MFIE_TYPE_SSID = 0,
511 MFIE_TYPE_RATES = 1,
512 MFIE_TYPE_FH_SET = 2,
513 MFIE_TYPE_DS_SET = 3,
514 MFIE_TYPE_CF_SET = 4,
515 MFIE_TYPE_TIM = 5,
516 MFIE_TYPE_IBSS_SET = 6,
517 MFIE_TYPE_COUNTRY = 7,
518 MFIE_TYPE_HOP_PARAMS = 8,
519 MFIE_TYPE_HOP_TABLE = 9,
520 MFIE_TYPE_REQUEST = 10,
521 MFIE_TYPE_CHALLENGE = 16,
522 MFIE_TYPE_POWER_CONSTRAINT = 32,
523 MFIE_TYPE_POWER_CAPABILITY = 33,
524 MFIE_TYPE_TPC_REQUEST = 34,
525 MFIE_TYPE_TPC_REPORT = 35,
526 MFIE_TYPE_SUPP_CHANNELS = 36,
527 MFIE_TYPE_CSA = 37,
528 MFIE_TYPE_MEASURE_REQUEST = 38,
529 MFIE_TYPE_MEASURE_REPORT = 39,
530 MFIE_TYPE_QUIET = 40,
531 MFIE_TYPE_IBSS_DFS = 41,
532 MFIE_TYPE_ERP_INFO = 42,
533 MFIE_TYPE_RSN = 48,
534 MFIE_TYPE_RATES_EX = 50,
535 MFIE_TYPE_GENERIC = 221,
536 MFIE_TYPE_QOS_PARAMETER = 222,
537};
538
539/* Minimal header; can be used for passing 802.11 frames with sufficient
540 * information to determine what type of underlying data type is actually
541 * stored in the data. */
542struct ieee80211_hdr {
543 __le16 frame_ctl;
544 __le16 duration_id;
545 u8 payload[0];
546} __attribute__ ((packed));
547
548struct ieee80211_hdr_1addr {
549 __le16 frame_ctl;
550 __le16 duration_id;
551 u8 addr1[ETH_ALEN];
552 u8 payload[0];
553} __attribute__ ((packed));
554
555struct ieee80211_hdr_2addr {
556 __le16 frame_ctl;
557 __le16 duration_id;
558 u8 addr1[ETH_ALEN];
559 u8 addr2[ETH_ALEN];
560 u8 payload[0];
561} __attribute__ ((packed));
562
563struct ieee80211_hdr_3addr {
564 __le16 frame_ctl;
565 __le16 duration_id;
566 u8 addr1[ETH_ALEN];
567 u8 addr2[ETH_ALEN];
568 u8 addr3[ETH_ALEN];
569 __le16 seq_ctl;
570 u8 payload[0];
571} __attribute__ ((packed));
572
573struct ieee80211_hdr_4addr {
574 __le16 frame_ctl;
575 __le16 duration_id;
576 u8 addr1[ETH_ALEN];
577 u8 addr2[ETH_ALEN];
578 u8 addr3[ETH_ALEN];
579 __le16 seq_ctl;
580 u8 addr4[ETH_ALEN];
581 u8 payload[0];
582} __attribute__ ((packed));
583
584struct ieee80211_hdr_3addrqos {
585 __le16 frame_ctl;
586 __le16 duration_id;
587 u8 addr1[ETH_ALEN];
588 u8 addr2[ETH_ALEN];
589 u8 addr3[ETH_ALEN];
590 __le16 seq_ctl;
591 u8 payload[0];
592 __le16 qos_ctl;
593} __attribute__ ((packed));
594
595struct ieee80211_hdr_4addrqos {
596 __le16 frame_ctl;
597 __le16 duration_id;
598 u8 addr1[ETH_ALEN];
599 u8 addr2[ETH_ALEN];
600 u8 addr3[ETH_ALEN];
601 __le16 seq_ctl;
602 u8 addr4[ETH_ALEN];
603 u8 payload[0];
604 __le16 qos_ctl;
605} __attribute__ ((packed));
606
607struct ieee80211_info_element {
608 u8 id;
609 u8 len;
610 u8 data[0];
611} __attribute__ ((packed));
612
613/*
614 * These are the data types that can make up management packets
615 *
616 u16 auth_algorithm;
617 u16 auth_sequence;
618 u16 beacon_interval;
619 u16 capability;
620 u8 current_ap[ETH_ALEN];
621 u16 listen_interval;
622 struct {
623 u16 association_id:14, reserved:2;
624 } __attribute__ ((packed));
625 u32 time_stamp[2];
626 u16 reason;
627 u16 status;
628*/
629
630struct ieee80211_auth {
631 struct ieee80211_hdr_3addr header;
632 __le16 algorithm;
633 __le16 transaction;
634 __le16 status;
635 /* challenge */
636 struct ieee80211_info_element info_element[0];
637} __attribute__ ((packed));
638
639struct ieee80211_channel_switch {
640 u8 id;
641 u8 len;
642 u8 mode;
643 u8 channel;
644 u8 count;
645} __attribute__ ((packed));
646
647struct ieee80211_action {
648 struct ieee80211_hdr_3addr header;
649 u8 category;
650 u8 action;
651 union {
652 struct ieee80211_action_exchange {
653 u8 token;
654 struct ieee80211_info_element info_element[0];
655 } exchange;
656 struct ieee80211_channel_switch channel_switch;
657
658 } format;
659} __attribute__ ((packed));
660
661struct ieee80211_disassoc {
662 struct ieee80211_hdr_3addr header;
663 __le16 reason;
664} __attribute__ ((packed));
665
666/* Alias deauth for disassoc */
667#define ieee80211_deauth ieee80211_disassoc
668
669struct ieee80211_probe_request {
670 struct ieee80211_hdr_3addr header;
671 /* SSID, supported rates */
672 struct ieee80211_info_element info_element[0];
673} __attribute__ ((packed));
674
675struct ieee80211_probe_response {
676 struct ieee80211_hdr_3addr header;
677 u32 time_stamp[2];
678 __le16 beacon_interval;
679 __le16 capability;
680 /* SSID, supported rates, FH params, DS params,
681 * CF params, IBSS params, TIM (if beacon), RSN */
682 struct ieee80211_info_element info_element[0];
683} __attribute__ ((packed));
684
685/* Alias beacon for probe_response */
686#define ieee80211_beacon ieee80211_probe_response
687
688struct ieee80211_assoc_request {
689 struct ieee80211_hdr_3addr header;
690 __le16 capability;
691 __le16 listen_interval;
692 /* SSID, supported rates, RSN */
693 struct ieee80211_info_element info_element[0];
694} __attribute__ ((packed));
695
696struct ieee80211_reassoc_request {
697 struct ieee80211_hdr_3addr header;
698 __le16 capability;
699 __le16 listen_interval;
700 u8 current_ap[ETH_ALEN];
701 struct ieee80211_info_element info_element[0];
702} __attribute__ ((packed));
703
704struct ieee80211_assoc_response {
705 struct ieee80211_hdr_3addr header;
706 __le16 capability;
707 __le16 status;
708 __le16 aid;
709 /* supported rates */
710 struct ieee80211_info_element info_element[0];
711} __attribute__ ((packed));
712
713struct ieee80211_txb {
714 u8 nr_frags;
715 u8 encrypted;
716 u8 rts_included;
717 u8 reserved;
718 __le16 frag_size;
719 __le16 payload_size;
720 struct sk_buff *fragments[0];
721};
722
723/* SWEEP TABLE ENTRIES NUMBER */
724#define MAX_SWEEP_TAB_ENTRIES 42
725#define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
726/* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
727 * only use 8, and then use extended rates for the remaining supported
728 * rates. Other APs, however, stick all of their supported rates on the
729 * main rates information element... */
730#define MAX_RATES_LENGTH ((u8)12)
731#define MAX_RATES_EX_LENGTH ((u8)16)
732#define MAX_NETWORK_COUNT 128
733
734#define CRC_LENGTH 4U
735
736#define MAX_WPA_IE_LEN 64
737
738#define NETWORK_EMPTY_ESSID (1<<0)
739#define NETWORK_HAS_OFDM (1<<1)
740#define NETWORK_HAS_CCK (1<<2)
741
742/* QoS structure */
743#define NETWORK_HAS_QOS_PARAMETERS (1<<3)
744#define NETWORK_HAS_QOS_INFORMATION (1<<4)
745#define NETWORK_HAS_QOS_MASK (NETWORK_HAS_QOS_PARAMETERS | \
746 NETWORK_HAS_QOS_INFORMATION)
747
748/* 802.11h */
749#define NETWORK_HAS_POWER_CONSTRAINT (1<<5)
750#define NETWORK_HAS_CSA (1<<6)
751#define NETWORK_HAS_QUIET (1<<7)
752#define NETWORK_HAS_IBSS_DFS (1<<8)
753#define NETWORK_HAS_TPC_REPORT (1<<9)
754
755#define NETWORK_HAS_ERP_VALUE (1<<10)
756
757#define QOS_QUEUE_NUM 4
758#define QOS_OUI_LEN 3
759#define QOS_OUI_TYPE 2
760#define QOS_ELEMENT_ID 221
761#define QOS_OUI_INFO_SUB_TYPE 0
762#define QOS_OUI_PARAM_SUB_TYPE 1
763#define QOS_VERSION_1 1
764#define QOS_AIFSN_MIN_VALUE 2
765
766struct ieee80211_qos_information_element {
767 u8 elementID;
768 u8 length;
769 u8 qui[QOS_OUI_LEN];
770 u8 qui_type;
771 u8 qui_subtype;
772 u8 version;
773 u8 ac_info;
774} __attribute__ ((packed));
775
776struct ieee80211_qos_ac_parameter {
777 u8 aci_aifsn;
778 u8 ecw_min_max;
779 __le16 tx_op_limit;
780} __attribute__ ((packed));
781
782struct ieee80211_qos_parameter_info {
783 struct ieee80211_qos_information_element info_element;
784 u8 reserved;
785 struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
786} __attribute__ ((packed));
787
788struct ieee80211_qos_parameters {
789 __le16 cw_min[QOS_QUEUE_NUM];
790 __le16 cw_max[QOS_QUEUE_NUM];
791 u8 aifs[QOS_QUEUE_NUM];
792 u8 flag[QOS_QUEUE_NUM];
793 __le16 tx_op_limit[QOS_QUEUE_NUM];
794} __attribute__ ((packed));
795
796struct ieee80211_qos_data {
797 struct ieee80211_qos_parameters parameters;
798 int active;
799 int supported;
800 u8 param_count;
801 u8 old_param_count;
802};
803
804struct ieee80211_tim_parameters {
805 u8 tim_count;
806 u8 tim_period;
807} __attribute__ ((packed));
808
809/*******************************************************/
810
811enum { /* ieee80211_basic_report.map */
812 IEEE80211_BASIC_MAP_BSS = (1 << 0),
813 IEEE80211_BASIC_MAP_OFDM = (1 << 1),
814 IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2),
815 IEEE80211_BASIC_MAP_RADAR = (1 << 3),
816 IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4),
817 /* Bits 5-7 are reserved */
818
819};
820struct ieee80211_basic_report {
821 u8 channel;
822 __le64 start_time;
823 __le16 duration;
824 u8 map;
825} __attribute__ ((packed));
826
827enum { /* ieee80211_measurement_request.mode */
828 /* Bit 0 is reserved */
829 IEEE80211_MEASUREMENT_ENABLE = (1 << 1),
830 IEEE80211_MEASUREMENT_REQUEST = (1 << 2),
831 IEEE80211_MEASUREMENT_REPORT = (1 << 3),
832 /* Bits 4-7 are reserved */
833};
834
835enum {
836 IEEE80211_REPORT_BASIC = 0, /* required */
837 IEEE80211_REPORT_CCA = 1, /* optional */
838 IEEE80211_REPORT_RPI = 2, /* optional */
839 /* 3-255 reserved */
840};
841
842struct ieee80211_measurement_params {
843 u8 channel;
844 __le64 start_time;
845 __le16 duration;
846} __attribute__ ((packed));
847
848struct ieee80211_measurement_request {
849 struct ieee80211_info_element ie;
850 u8 token;
851 u8 mode;
852 u8 type;
853 struct ieee80211_measurement_params params[0];
854} __attribute__ ((packed));
855
856struct ieee80211_measurement_report {
857 struct ieee80211_info_element ie;
858 u8 token;
859 u8 mode;
860 u8 type;
861 union {
862 struct ieee80211_basic_report basic[0];
863 } u;
864} __attribute__ ((packed));
865
866struct ieee80211_tpc_report {
867 u8 transmit_power;
868 u8 link_margin;
869} __attribute__ ((packed));
870
871struct ieee80211_channel_map {
872 u8 channel;
873 u8 map;
874} __attribute__ ((packed));
875
876struct ieee80211_ibss_dfs {
877 struct ieee80211_info_element ie;
878 u8 owner[ETH_ALEN];
879 u8 recovery_interval;
880 struct ieee80211_channel_map channel_map[0];
881};
882
883struct ieee80211_csa {
884 u8 mode;
885 u8 channel;
886 u8 count;
887} __attribute__ ((packed));
888
889struct ieee80211_quiet {
890 u8 count;
891 u8 period;
892 u8 duration;
893 u8 offset;
894} __attribute__ ((packed));
895
896struct ieee80211_network {
897 /* These entries are used to identify a unique network */
898 u8 bssid[ETH_ALEN];
899 u8 channel;
900 /* Ensure null-terminated for any debug msgs */
901 u8 ssid[IW_ESSID_MAX_SIZE + 1];
902 u8 ssid_len;
903
904 struct ieee80211_qos_data qos_data;
905
906 /* These are network statistics */
907 struct ieee80211_rx_stats stats;
908 u16 capability;
909 u8 rates[MAX_RATES_LENGTH];
910 u8 rates_len;
911 u8 rates_ex[MAX_RATES_EX_LENGTH];
912 u8 rates_ex_len;
913 unsigned long last_scanned;
914 u8 mode;
915 u32 flags;
916 u32 last_associate;
917 u32 time_stamp[2];
918 u16 beacon_interval;
919 u16 listen_interval;
920 u16 atim_window;
921 u8 erp_value;
922 u8 wpa_ie[MAX_WPA_IE_LEN];
923 size_t wpa_ie_len;
924 u8 rsn_ie[MAX_WPA_IE_LEN];
925 size_t rsn_ie_len;
926 struct ieee80211_tim_parameters tim;
927
928 /* 802.11h info */
929
930 /* Power Constraint - mandatory if spctrm mgmt required */
931 u8 power_constraint;
932
933 /* TPC Report - mandatory if spctrm mgmt required */
934 struct ieee80211_tpc_report tpc_report;
935
936 /* IBSS DFS - mandatory if spctrm mgmt required and IBSS
937 * NOTE: This is variable length and so must be allocated dynamically */
938 struct ieee80211_ibss_dfs *ibss_dfs;
939
940 /* Channel Switch Announcement - optional if spctrm mgmt required */
941 struct ieee80211_csa csa;
942
943 /* Quiet - optional if spctrm mgmt required */
944 struct ieee80211_quiet quiet;
945
946 struct list_head list;
947};
948
949enum ieee80211_state {
950 IEEE80211_UNINITIALIZED = 0,
951 IEEE80211_INITIALIZED,
952 IEEE80211_ASSOCIATING,
953 IEEE80211_ASSOCIATED,
954 IEEE80211_AUTHENTICATING,
955 IEEE80211_AUTHENTICATED,
956 IEEE80211_SHUTDOWN
957};
958
959#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
960#define DEFAULT_FTS 2346
961
962#define CFG_IEEE80211_RESERVE_FCS (1<<0)
963#define CFG_IEEE80211_COMPUTE_FCS (1<<1)
964#define CFG_IEEE80211_RTS (1<<2)
965
966#define IEEE80211_24GHZ_MIN_CHANNEL 1
967#define IEEE80211_24GHZ_MAX_CHANNEL 14
968#define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \
969 IEEE80211_24GHZ_MIN_CHANNEL + 1)
970
971#define IEEE80211_52GHZ_MIN_CHANNEL 34
972#define IEEE80211_52GHZ_MAX_CHANNEL 165
973#define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \
974 IEEE80211_52GHZ_MIN_CHANNEL + 1)
975
976enum {
977 IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
978 IEEE80211_CH_80211H_RULES = (1 << 1),
979 IEEE80211_CH_B_ONLY = (1 << 2),
980 IEEE80211_CH_NO_IBSS = (1 << 3),
981 IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
982 IEEE80211_CH_RADAR_DETECT = (1 << 5),
983 IEEE80211_CH_INVALID = (1 << 6),
984};
985
986struct ieee80211_channel {
987 u32 freq; /* in MHz */
988 u8 channel;
989 u8 flags;
990 u8 max_power; /* in dBm */
991};
992
993struct ieee80211_geo {
994 u8 name[4];
995 u8 bg_channels;
996 u8 a_channels;
997 struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
998 struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
999};
1000
1001struct ieee80211_device {
1002 struct net_device *dev;
1003 struct ieee80211_security sec;
1004
1005 /* Bookkeeping structures */
1006 struct net_device_stats stats;
1007 struct ieee80211_stats ieee_stats;
1008
1009 struct ieee80211_geo geo;
1010
1011 /* Probe / Beacon management */
1012 struct list_head network_free_list;
1013 struct list_head network_list;
1014 struct ieee80211_network *networks;
1015 int scans;
1016 int scan_age;
1017
1018 int iw_mode; /* operating mode (IW_MODE_*) */
1019 struct iw_spy_data spy_data; /* iwspy support */
1020
1021 spinlock_t lock;
1022
1023 int tx_headroom; /* Set to size of any additional room needed at front
1024 * of allocated Tx SKBs */
1025 u32 config;
1026
1027 /* WEP and other encryption related settings at the device level */
1028 int open_wep; /* Set to 1 to allow unencrypted frames */
1029
1030 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
1031 * WEP key changes */
1032
1033 /* If the host performs {en,de}cryption, then set to 1 */
1034 int host_encrypt;
1035 int host_encrypt_msdu;
1036 int host_decrypt;
1037 /* host performs multicast decryption */
1038 int host_mc_decrypt;
1039
1040 /* host should strip IV and ICV from protected frames */
1041 /* meaningful only when hardware decryption is being used */
1042 int host_strip_iv_icv;
1043
1044 int host_open_frag;
1045 int host_build_iv;
1046 int ieee802_1x; /* is IEEE 802.1X used */
1047
1048 /* WPA data */
1049 int wpa_enabled;
1050 int drop_unencrypted;
1051 int privacy_invoked;
1052 size_t wpa_ie_len;
1053 u8 *wpa_ie;
1054
1055 struct list_head crypt_deinit_list;
1056 struct ieee80211_crypt_data *crypt[WEP_KEYS];
1057 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
1058 struct timer_list crypt_deinit_timer;
1059 int crypt_quiesced;
1060
1061 int bcrx_sta_key; /* use individual keys to override default keys even
1062 * with RX of broad/multicast frames */
1063
1064 /* Fragmentation structures */
1065 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
1066 unsigned int frag_next_idx;
1067 u16 fts; /* Fragmentation Threshold */
1068 u16 rts; /* RTS threshold */
1069
1070 /* Association info */
1071 u8 bssid[ETH_ALEN];
1072
1073 enum ieee80211_state state;
1074
1075 int mode; /* A, B, G */
1076 int modulation; /* CCK, OFDM */
1077 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
1078 int abg_true; /* ABG flag */
1079
1080 int perfect_rssi;
1081 int worst_rssi;
1082
1083 u16 prev_seq_ctl; /* used to drop duplicate frames */
1084
1085 /* Callback functions */
1086 void (*set_security) (struct net_device * dev,
1087 struct ieee80211_security * sec);
1088 int (*hard_start_xmit) (struct ieee80211_txb * txb,
1089 struct net_device * dev, int pri);
1090 int (*reset_port) (struct net_device * dev);
1091 int (*is_queue_full) (struct net_device * dev, int pri);
1092
1093 int (*handle_management) (struct net_device * dev,
1094 struct ieee80211_network * network, u16 type);
1095 int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb);
1096
1097 /* Typical STA methods */
1098 int (*handle_auth) (struct net_device * dev,
1099 struct ieee80211_auth * auth);
1100 int (*handle_deauth) (struct net_device * dev,
1101 struct ieee80211_deauth * auth);
1102 int (*handle_action) (struct net_device * dev,
1103 struct ieee80211_action * action,
1104 struct ieee80211_rx_stats * stats);
1105 int (*handle_disassoc) (struct net_device * dev,
1106 struct ieee80211_disassoc * assoc);
1107 int (*handle_beacon) (struct net_device * dev,
1108 struct ieee80211_beacon * beacon,
1109 struct ieee80211_network * network);
1110 int (*handle_probe_response) (struct net_device * dev,
1111 struct ieee80211_probe_response * resp,
1112 struct ieee80211_network * network);
1113 int (*handle_probe_request) (struct net_device * dev,
1114 struct ieee80211_probe_request * req,
1115 struct ieee80211_rx_stats * stats);
1116 int (*handle_assoc_response) (struct net_device * dev,
1117 struct ieee80211_assoc_response * resp,
1118 struct ieee80211_network * network);
1119
1120 /* Typical AP methods */
1121 int (*handle_assoc_request) (struct net_device * dev);
1122 int (*handle_reassoc_request) (struct net_device * dev,
1123 struct ieee80211_reassoc_request * req);
1124
1125 /* This must be the last item so that it points to the data
1126 * allocated beyond this structure by alloc_ieee80211 */
1127 u8 priv[0];
1128};
1129
1130#define IEEE_A (1<<0)
1131#define IEEE_B (1<<1)
1132#define IEEE_G (1<<2)
1133#define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
1134
1135static inline void *ieee80211_priv(struct net_device *dev)
1136{
1137 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
1138}
1139
1140static inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
1141{
1142 /* Single white space is for Linksys APs */
1143 if (essid_len == 1 && essid[0] == ' ')
1144 return 1;
1145
1146 /* Otherwise, if the entire essid is 0, we assume it is hidden */
1147 while (essid_len) {
1148 essid_len--;
1149 if (essid[essid_len] != '\0')
1150 return 0;
1151 }
1152
1153 return 1;
1154}
1155
1156static inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
1157 int mode)
1158{
1159 /*
1160 * It is possible for both access points and our device to support
1161 * combinations of modes, so as long as there is one valid combination
1162 * of ap/device supported modes, then return success
1163 *
1164 */
1165 if ((mode & IEEE_A) &&
1166 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1167 (ieee->freq_band & IEEE80211_52GHZ_BAND))
1168 return 1;
1169
1170 if ((mode & IEEE_G) &&
1171 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1172 (ieee->freq_band & IEEE80211_24GHZ_BAND))
1173 return 1;
1174
1175 if ((mode & IEEE_B) &&
1176 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
1177 (ieee->freq_band & IEEE80211_24GHZ_BAND))
1178 return 1;
1179
1180 return 0;
1181}
1182
1183static inline int ieee80211_get_hdrlen(u16 fc)
1184{
1185 int hdrlen = IEEE80211_3ADDR_LEN;
1186 u16 stype = WLAN_FC_GET_STYPE(fc);
1187
1188 switch (WLAN_FC_GET_TYPE(fc)) {
1189 case IEEE80211_FTYPE_DATA:
1190 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
1191 hdrlen = IEEE80211_4ADDR_LEN;
1192 if (stype & IEEE80211_STYPE_QOS_DATA)
1193 hdrlen += 2;
1194 break;
1195 case IEEE80211_FTYPE_CTL:
1196 switch (WLAN_FC_GET_STYPE(fc)) {
1197 case IEEE80211_STYPE_CTS:
1198 case IEEE80211_STYPE_ACK:
1199 hdrlen = IEEE80211_1ADDR_LEN;
1200 break;
1201 default:
1202 hdrlen = IEEE80211_2ADDR_LEN;
1203 break;
1204 }
1205 break;
1206 }
1207
1208 return hdrlen;
1209}
1210
1211static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
1212{
1213 switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
1214 case IEEE80211_1ADDR_LEN:
1215 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
1216 case IEEE80211_2ADDR_LEN:
1217 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
1218 case IEEE80211_3ADDR_LEN:
1219 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
1220 case IEEE80211_4ADDR_LEN:
1221 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
1222 }
1223 return NULL;
1224}
1225
1226static inline int ieee80211_is_ofdm_rate(u8 rate)
1227{
1228 switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1229 case IEEE80211_OFDM_RATE_6MB:
1230 case IEEE80211_OFDM_RATE_9MB:
1231 case IEEE80211_OFDM_RATE_12MB:
1232 case IEEE80211_OFDM_RATE_18MB:
1233 case IEEE80211_OFDM_RATE_24MB:
1234 case IEEE80211_OFDM_RATE_36MB:
1235 case IEEE80211_OFDM_RATE_48MB:
1236 case IEEE80211_OFDM_RATE_54MB:
1237 return 1;
1238 }
1239 return 0;
1240}
1241
1242static inline int ieee80211_is_cck_rate(u8 rate)
1243{
1244 switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1245 case IEEE80211_CCK_RATE_1MB:
1246 case IEEE80211_CCK_RATE_2MB:
1247 case IEEE80211_CCK_RATE_5MB:
1248 case IEEE80211_CCK_RATE_11MB:
1249 return 1;
1250 }
1251 return 0;
1252}
1253
1254/* ieee80211.c */
1255extern void free_ieee80211(struct net_device *dev);
1256extern struct net_device *alloc_ieee80211(int sizeof_priv);
1257
1258extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1259
1260/* ieee80211_tx.c */
1261extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1262extern void ieee80211_txb_free(struct ieee80211_txb *);
1263extern int ieee80211_tx_frame(struct ieee80211_device *ieee,
1264 struct ieee80211_hdr *frame, int hdr_len,
1265 int total_len, int encrypt_mpdu);
1266
1267/* ieee80211_rx.c */
1268extern void ieee80211_rx_any(struct ieee80211_device *ieee,
1269 struct sk_buff *skb, struct ieee80211_rx_stats *stats);
1270extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
1271 struct ieee80211_rx_stats *rx_stats);
1272/* make sure to set stats->len */
1273extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1274 struct ieee80211_hdr_4addr *header,
1275 struct ieee80211_rx_stats *stats);
1276extern void ieee80211_network_reset(struct ieee80211_network *network);
1277
1278/* ieee80211_geo.c */
1279extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1280 *ieee);
1281extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1282 const struct ieee80211_geo *geo);
1283
1284extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1285 u8 channel);
1286extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1287 u8 channel);
1288extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1289extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
1290 u8 channel);
1291extern const struct ieee80211_channel *ieee80211_get_channel(struct
1292 ieee80211_device
1293 *ieee, u8 channel);
1294
1295/* ieee80211_wx.c */
1296extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1297 struct iw_request_info *info,
1298 union iwreq_data *wrqu, char *key);
1299extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1300 struct iw_request_info *info,
1301 union iwreq_data *wrqu, char *key);
1302extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1303 struct iw_request_info *info,
1304 union iwreq_data *wrqu, char *key);
1305extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1306 struct iw_request_info *info,
1307 union iwreq_data *wrqu, char *extra);
1308extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1309 struct iw_request_info *info,
1310 union iwreq_data *wrqu, char *extra);
1311extern int ieee80211_wx_set_auth(struct net_device *dev,
1312 struct iw_request_info *info,
1313 union iwreq_data *wrqu,
1314 char *extra);
1315extern int ieee80211_wx_get_auth(struct net_device *dev,
1316 struct iw_request_info *info,
1317 union iwreq_data *wrqu,
1318 char *extra);
1319
1320static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1321{
1322 ieee->scans++;
1323}
1324
1325static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1326{
1327 return ieee->scans;
1328}
1329
1330#endif /* IEEE80211_H */