2 * Merged with mainline ieee80211.h in Aug 2004. Original ieee802_11
3 * remains copyright by the original authors
5 * Portions of the merged code are based on Host AP (software wireless
6 * LAN access point) driver for Intersil Prism2/2.5/3.
8 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
10 * Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
12 * Adaption to a generic IEEE 802.11 stack by James Ketrenos
13 * <jketreno@linux.intel.com>
14 * Copyright (c) 2004-2005, Intel Corporation
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
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
28 #include <linux/if_ether.h> /* ETH_ALEN */
29 #include <linux/kernel.h> /* ARRAY_SIZE */
30 #include <linux/wireless.h>
32 #define IEEE80211_VERSION "git-1.1.13"
34 #define IEEE80211_DATA_LEN 2304
35 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
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) */
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)
51 #define MIN_FRAG_THRESHOLD 256U
52 #define MAX_FRAG_THRESHOLD 2346U
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
67 #define IEEE80211_FTYPE_MGMT 0x0000
68 #define IEEE80211_FTYPE_CTL 0x0004
69 #define IEEE80211_FTYPE_DATA 0x0008
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
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
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
104 #define IEEE80211_SCTL_FRAG 0x000F
105 #define IEEE80211_SCTL_SEQ 0xFFF0
108 #define IEEE80211_QCTL_TID 0x000F
112 #ifdef CONFIG_IEEE80211_DEBUG
113 extern u32 ieee80211_debug_level;
114 #define IEEE80211_DEBUG(level, fmt, args...) \
115 do { if (ieee80211_debug_level & (level)) \
116 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
117 in_interrupt() ? 'I' : 'U', __func__ , ## args); } while (0)
118 static inline bool ieee80211_ratelimit_debug(u32 level)
120 return (ieee80211_debug_level & level) && net_ratelimit();
123 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
124 static inline bool ieee80211_ratelimit_debug(u32 level)
128 #endif /* CONFIG_IEEE80211_DEBUG */
131 * To use the debug system:
133 * If you are defining a new debug classification, simply add it to the #define
134 * list here in the form of:
136 * #define IEEE80211_DL_xxxx VALUE
138 * shifting value to the left one bit from the previous entry. xxxx should be
139 * the name of the classification (for example, WEP)
141 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
142 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
143 * to send output to that classification.
145 * To add your debug level to the list of levels seen when you perform
147 * % cat /proc/net/ieee80211/debug_level
149 * you simply need to add your entry to the ieee80211_debug_level array.
151 * If you do not see debug_level in /proc/net/ieee80211 then you do not have
152 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
156 #define IEEE80211_DL_INFO (1<<0)
157 #define IEEE80211_DL_WX (1<<1)
158 #define IEEE80211_DL_SCAN (1<<2)
159 #define IEEE80211_DL_STATE (1<<3)
160 #define IEEE80211_DL_MGMT (1<<4)
161 #define IEEE80211_DL_FRAG (1<<5)
162 #define IEEE80211_DL_DROP (1<<7)
164 #define IEEE80211_DL_TX (1<<8)
165 #define IEEE80211_DL_RX (1<<9)
166 #define IEEE80211_DL_QOS (1<<31)
168 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
169 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
170 #define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
172 #define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
173 #define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
174 #define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
175 #define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
176 #define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
177 #define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
178 #define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
179 #define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
180 #define IEEE80211_DEBUG_QOS(f, a...) IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
181 #include <linux/netdevice.h>
182 #include <linux/if_arp.h> /* ARPHRD_ETHER */
185 #define WIRELESS_SPY /* enable iwspy support */
187 #include <net/iw_handler.h> /* new driver API */
189 #define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
191 #ifndef ETH_P_80211_RAW
192 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
195 /* IEEE 802.11 defines */
197 #define P80211_OUI_LEN 3
199 struct ieee80211_snap_hdr {
201 u8 dsap; /* always 0xAA */
202 u8 ssap; /* always 0xAA */
203 u8 ctrl; /* always 0x03 */
204 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
206 } __attribute__ ((packed));
208 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
210 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
211 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
212 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
214 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
215 #define WLAN_GET_SEQ_SEQ(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
217 /* Authentication algorithms */
218 #define WLAN_AUTH_OPEN 0
219 #define WLAN_AUTH_SHARED_KEY 1
220 #define WLAN_AUTH_LEAP 2
222 #define WLAN_AUTH_CHALLENGE_LEN 128
224 #define WLAN_CAPABILITY_ESS (1<<0)
225 #define WLAN_CAPABILITY_IBSS (1<<1)
226 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
227 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
228 #define WLAN_CAPABILITY_PRIVACY (1<<4)
229 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
230 #define WLAN_CAPABILITY_PBCC (1<<6)
231 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
232 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
233 #define WLAN_CAPABILITY_QOS (1<<9)
234 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
235 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
237 /* 802.11g ERP information element */
238 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
239 #define WLAN_ERP_USE_PROTECTION (1<<1)
240 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
243 enum ieee80211_statuscode {
244 WLAN_STATUS_SUCCESS = 0,
245 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
246 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
247 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
248 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
249 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
250 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
251 WLAN_STATUS_CHALLENGE_FAIL = 15,
252 WLAN_STATUS_AUTH_TIMEOUT = 16,
253 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
254 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
256 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
257 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
258 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
260 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
261 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
262 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
264 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
265 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
267 WLAN_STATUS_INVALID_IE = 40,
268 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
269 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
270 WLAN_STATUS_INVALID_AKMP = 43,
271 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
272 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
273 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
277 enum ieee80211_reasoncode {
278 WLAN_REASON_UNSPECIFIED = 1,
279 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
280 WLAN_REASON_DEAUTH_LEAVING = 3,
281 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
282 WLAN_REASON_DISASSOC_AP_BUSY = 5,
283 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
284 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
285 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
286 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
288 WLAN_REASON_DISASSOC_BAD_POWER = 10,
289 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
291 WLAN_REASON_INVALID_IE = 13,
292 WLAN_REASON_MIC_FAILURE = 14,
293 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
294 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
295 WLAN_REASON_IE_DIFFERENT = 17,
296 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
297 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
298 WLAN_REASON_INVALID_AKMP = 20,
299 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
300 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
301 WLAN_REASON_IEEE8021X_FAILED = 23,
302 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
305 /* Action categories - 802.11h */
306 enum ieee80211_actioncategories {
307 WLAN_ACTION_SPECTRUM_MGMT = 0,
312 /* Action details - 802.11h */
313 enum ieee80211_actiondetails {
314 WLAN_ACTION_CATEGORY_MEASURE_REQUEST = 0,
315 WLAN_ACTION_CATEGORY_MEASURE_REPORT = 1,
316 WLAN_ACTION_CATEGORY_TPC_REQUEST = 2,
317 WLAN_ACTION_CATEGORY_TPC_REPORT = 3,
318 WLAN_ACTION_CATEGORY_CHANNEL_SWITCH = 4,
319 /* 5 - 255 Reserved */
322 #define IEEE80211_STATMASK_SIGNAL (1<<0)
323 #define IEEE80211_STATMASK_RSSI (1<<1)
324 #define IEEE80211_STATMASK_NOISE (1<<2)
325 #define IEEE80211_STATMASK_RATE (1<<3)
326 #define IEEE80211_STATMASK_WEMASK 0x7
328 #define IEEE80211_CCK_MODULATION (1<<0)
329 #define IEEE80211_OFDM_MODULATION (1<<1)
331 #define IEEE80211_24GHZ_BAND (1<<0)
332 #define IEEE80211_52GHZ_BAND (1<<1)
334 #define IEEE80211_CCK_RATE_1MB 0x02
335 #define IEEE80211_CCK_RATE_2MB 0x04
336 #define IEEE80211_CCK_RATE_5MB 0x0B
337 #define IEEE80211_CCK_RATE_11MB 0x16
338 #define IEEE80211_OFDM_RATE_6MB 0x0C
339 #define IEEE80211_OFDM_RATE_9MB 0x12
340 #define IEEE80211_OFDM_RATE_12MB 0x18
341 #define IEEE80211_OFDM_RATE_18MB 0x24
342 #define IEEE80211_OFDM_RATE_24MB 0x30
343 #define IEEE80211_OFDM_RATE_36MB 0x48
344 #define IEEE80211_OFDM_RATE_48MB 0x60
345 #define IEEE80211_OFDM_RATE_54MB 0x6C
346 #define IEEE80211_BASIC_RATE_MASK 0x80
348 #define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
349 #define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
350 #define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
351 #define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
352 #define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
353 #define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
354 #define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
355 #define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
356 #define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
357 #define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
358 #define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
359 #define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
361 #define IEEE80211_CCK_RATES_MASK 0x0000000F
362 #define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
363 IEEE80211_CCK_RATE_2MB_MASK)
364 #define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
365 IEEE80211_CCK_RATE_5MB_MASK | \
366 IEEE80211_CCK_RATE_11MB_MASK)
368 #define IEEE80211_OFDM_RATES_MASK 0x00000FF0
369 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
370 IEEE80211_OFDM_RATE_12MB_MASK | \
371 IEEE80211_OFDM_RATE_24MB_MASK)
372 #define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
373 IEEE80211_OFDM_RATE_9MB_MASK | \
374 IEEE80211_OFDM_RATE_18MB_MASK | \
375 IEEE80211_OFDM_RATE_36MB_MASK | \
376 IEEE80211_OFDM_RATE_48MB_MASK | \
377 IEEE80211_OFDM_RATE_54MB_MASK)
378 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
379 IEEE80211_CCK_DEFAULT_RATES_MASK)
381 #define IEEE80211_NUM_OFDM_RATES 8
382 #define IEEE80211_NUM_CCK_RATES 4
383 #define IEEE80211_OFDM_SHIFT_MASK_A 4
385 /* NOTE: This data is for statistical purposes; not all hardware provides this
386 * information for frames received.
387 * For ieee80211_rx_mgt, you need to set at least the 'len' parameter.
389 struct ieee80211_rx_stats {
394 u16 rate; /* in 100 kbps */
404 /* IEEE 802.11 requires that STA supports concurrent reception of at least
405 * three fragmented frames. This define can be increased to support more
406 * concurrent frames, but it should be noted that each entry can consume about
407 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
408 #define IEEE80211_FRAG_CACHE_LEN 4
410 struct ieee80211_frag_entry {
411 unsigned long first_frag_time;
413 unsigned int last_frag;
415 u8 src_addr[ETH_ALEN];
416 u8 dst_addr[ETH_ALEN];
419 struct ieee80211_stats {
420 unsigned int tx_unicast_frames;
421 unsigned int tx_multicast_frames;
422 unsigned int tx_fragments;
423 unsigned int tx_unicast_octets;
424 unsigned int tx_multicast_octets;
425 unsigned int tx_deferred_transmissions;
426 unsigned int tx_single_retry_frames;
427 unsigned int tx_multiple_retry_frames;
428 unsigned int tx_retry_limit_exceeded;
429 unsigned int tx_discards;
430 unsigned int rx_unicast_frames;
431 unsigned int rx_multicast_frames;
432 unsigned int rx_fragments;
433 unsigned int rx_unicast_octets;
434 unsigned int rx_multicast_octets;
435 unsigned int rx_fcs_errors;
436 unsigned int rx_discards_no_buffer;
437 unsigned int tx_discards_wrong_sa;
438 unsigned int rx_discards_undecryptable;
439 unsigned int rx_message_in_msg_fragments;
440 unsigned int rx_message_in_bad_msg_fragments;
443 struct ieee80211_device;
445 #include "ieee80211_crypt.h"
447 #define SEC_KEY_1 (1<<0)
448 #define SEC_KEY_2 (1<<1)
449 #define SEC_KEY_3 (1<<2)
450 #define SEC_KEY_4 (1<<3)
451 #define SEC_ACTIVE_KEY (1<<4)
452 #define SEC_AUTH_MODE (1<<5)
453 #define SEC_UNICAST_GROUP (1<<6)
454 #define SEC_LEVEL (1<<7)
455 #define SEC_ENABLED (1<<8)
456 #define SEC_ENCRYPT (1<<9)
458 #define SEC_LEVEL_0 0 /* None */
459 #define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
460 #define SEC_LEVEL_2 2 /* Level 1 + TKIP */
461 #define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
462 #define SEC_LEVEL_3 4 /* Level 2 + CCMP */
464 #define SEC_ALG_NONE 0
465 #define SEC_ALG_WEP 1
466 #define SEC_ALG_TKIP 2
467 #define SEC_ALG_CCMP 3
470 #define WEP_KEY_LEN 13
471 #define SCM_KEY_LEN 32
472 #define SCM_TEMPORAL_KEY_LENGTH 16
474 struct ieee80211_security {
477 auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
478 u8 encode_alg[WEP_KEYS];
479 u8 key_sizes[WEP_KEYS];
480 u8 keys[WEP_KEYS][SCM_KEY_LEN];
483 } __attribute__ ((packed));
487 802.11 data frame from AP
489 ,-------------------------------------------------------------------.
490 Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
491 |------|------|---------|---------|---------|------|---------|------|
492 Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
493 | | tion | (BSSID) | | | ence | data | |
494 `-------------------------------------------------------------------'
500 #define BEACON_PROBE_SSID_ID_POSITION 12
502 /* Management Frame Information Element Types */
503 enum ieee80211_mfie {
506 MFIE_TYPE_FH_SET = 2,
507 MFIE_TYPE_DS_SET = 3,
508 MFIE_TYPE_CF_SET = 4,
510 MFIE_TYPE_IBSS_SET = 6,
511 MFIE_TYPE_COUNTRY = 7,
512 MFIE_TYPE_HOP_PARAMS = 8,
513 MFIE_TYPE_HOP_TABLE = 9,
514 MFIE_TYPE_REQUEST = 10,
515 MFIE_TYPE_CHALLENGE = 16,
516 MFIE_TYPE_POWER_CONSTRAINT = 32,
517 MFIE_TYPE_POWER_CAPABILITY = 33,
518 MFIE_TYPE_TPC_REQUEST = 34,
519 MFIE_TYPE_TPC_REPORT = 35,
520 MFIE_TYPE_SUPP_CHANNELS = 36,
522 MFIE_TYPE_MEASURE_REQUEST = 38,
523 MFIE_TYPE_MEASURE_REPORT = 39,
524 MFIE_TYPE_QUIET = 40,
525 MFIE_TYPE_IBSS_DFS = 41,
526 MFIE_TYPE_ERP_INFO = 42,
528 MFIE_TYPE_RATES_EX = 50,
529 MFIE_TYPE_GENERIC = 221,
530 MFIE_TYPE_QOS_PARAMETER = 222,
533 /* Minimal header; can be used for passing 802.11 frames with sufficient
534 * information to determine what type of underlying data type is actually
535 * stored in the data. */
536 struct ieee80211_hdr {
540 } __attribute__ ((packed));
542 struct ieee80211_hdr_1addr {
547 } __attribute__ ((packed));
549 struct ieee80211_hdr_2addr {
555 } __attribute__ ((packed));
557 struct ieee80211_hdr_3addr {
565 } __attribute__ ((packed));
567 struct ieee80211_hdr_4addr {
576 } __attribute__ ((packed));
578 struct ieee80211_hdr_3addrqos {
587 } __attribute__ ((packed));
589 struct ieee80211_hdr_4addrqos {
599 } __attribute__ ((packed));
601 struct ieee80211_info_element {
605 } __attribute__ ((packed));
608 * These are the data types that can make up management packets
614 u8 current_ap[ETH_ALEN];
617 u16 association_id:14, reserved:2;
618 } __attribute__ ((packed));
624 struct ieee80211_auth {
625 struct ieee80211_hdr_3addr header;
630 struct ieee80211_info_element info_element[0];
631 } __attribute__ ((packed));
633 struct ieee80211_channel_switch {
639 } __attribute__ ((packed));
641 struct ieee80211_action {
642 struct ieee80211_hdr_3addr header;
646 struct ieee80211_action_exchange {
648 struct ieee80211_info_element info_element[0];
650 struct ieee80211_channel_switch channel_switch;
653 } __attribute__ ((packed));
655 struct ieee80211_disassoc {
656 struct ieee80211_hdr_3addr header;
658 } __attribute__ ((packed));
660 /* Alias deauth for disassoc */
661 #define ieee80211_deauth ieee80211_disassoc
663 struct ieee80211_probe_request {
664 struct ieee80211_hdr_3addr header;
665 /* SSID, supported rates */
666 struct ieee80211_info_element info_element[0];
667 } __attribute__ ((packed));
669 struct ieee80211_probe_response {
670 struct ieee80211_hdr_3addr header;
671 __le32 time_stamp[2];
672 __le16 beacon_interval;
674 /* SSID, supported rates, FH params, DS params,
675 * CF params, IBSS params, TIM (if beacon), RSN */
676 struct ieee80211_info_element info_element[0];
677 } __attribute__ ((packed));
679 /* Alias beacon for probe_response */
680 #define ieee80211_beacon ieee80211_probe_response
682 struct ieee80211_assoc_request {
683 struct ieee80211_hdr_3addr header;
685 __le16 listen_interval;
686 /* SSID, supported rates, RSN */
687 struct ieee80211_info_element info_element[0];
688 } __attribute__ ((packed));
690 struct ieee80211_reassoc_request {
691 struct ieee80211_hdr_3addr header;
693 __le16 listen_interval;
694 u8 current_ap[ETH_ALEN];
695 struct ieee80211_info_element info_element[0];
696 } __attribute__ ((packed));
698 struct ieee80211_assoc_response {
699 struct ieee80211_hdr_3addr header;
703 /* supported rates */
704 struct ieee80211_info_element info_element[0];
705 } __attribute__ ((packed));
707 struct ieee80211_txb {
714 struct sk_buff *fragments[0];
717 /* SWEEP TABLE ENTRIES NUMBER */
718 #define MAX_SWEEP_TAB_ENTRIES 42
719 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
720 /* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
721 * only use 8, and then use extended rates for the remaining supported
722 * rates. Other APs, however, stick all of their supported rates on the
723 * main rates information element... */
724 #define MAX_RATES_LENGTH ((u8)12)
725 #define MAX_RATES_EX_LENGTH ((u8)16)
726 #define MAX_NETWORK_COUNT 128
728 #define CRC_LENGTH 4U
730 #define MAX_WPA_IE_LEN 64
732 #define NETWORK_EMPTY_ESSID (1<<0)
733 #define NETWORK_HAS_OFDM (1<<1)
734 #define NETWORK_HAS_CCK (1<<2)
737 #define NETWORK_HAS_QOS_PARAMETERS (1<<3)
738 #define NETWORK_HAS_QOS_INFORMATION (1<<4)
739 #define NETWORK_HAS_QOS_MASK (NETWORK_HAS_QOS_PARAMETERS | \
740 NETWORK_HAS_QOS_INFORMATION)
743 #define NETWORK_HAS_POWER_CONSTRAINT (1<<5)
744 #define NETWORK_HAS_CSA (1<<6)
745 #define NETWORK_HAS_QUIET (1<<7)
746 #define NETWORK_HAS_IBSS_DFS (1<<8)
747 #define NETWORK_HAS_TPC_REPORT (1<<9)
749 #define NETWORK_HAS_ERP_VALUE (1<<10)
751 #define QOS_QUEUE_NUM 4
752 #define QOS_OUI_LEN 3
753 #define QOS_OUI_TYPE 2
754 #define QOS_ELEMENT_ID 221
755 #define QOS_OUI_INFO_SUB_TYPE 0
756 #define QOS_OUI_PARAM_SUB_TYPE 1
757 #define QOS_VERSION_1 1
758 #define QOS_AIFSN_MIN_VALUE 2
760 struct ieee80211_qos_information_element {
768 } __attribute__ ((packed));
770 struct ieee80211_qos_ac_parameter {
774 } __attribute__ ((packed));
776 struct ieee80211_qos_parameter_info {
777 struct ieee80211_qos_information_element info_element;
779 struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
780 } __attribute__ ((packed));
782 struct ieee80211_qos_parameters {
783 __le16 cw_min[QOS_QUEUE_NUM];
784 __le16 cw_max[QOS_QUEUE_NUM];
785 u8 aifs[QOS_QUEUE_NUM];
786 u8 flag[QOS_QUEUE_NUM];
787 __le16 tx_op_limit[QOS_QUEUE_NUM];
788 } __attribute__ ((packed));
790 struct ieee80211_qos_data {
791 struct ieee80211_qos_parameters parameters;
798 struct ieee80211_tim_parameters {
801 } __attribute__ ((packed));
803 /*******************************************************/
805 enum { /* ieee80211_basic_report.map */
806 IEEE80211_BASIC_MAP_BSS = (1 << 0),
807 IEEE80211_BASIC_MAP_OFDM = (1 << 1),
808 IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2),
809 IEEE80211_BASIC_MAP_RADAR = (1 << 3),
810 IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4),
811 /* Bits 5-7 are reserved */
814 struct ieee80211_basic_report {
819 } __attribute__ ((packed));
821 enum { /* ieee80211_measurement_request.mode */
822 /* Bit 0 is reserved */
823 IEEE80211_MEASUREMENT_ENABLE = (1 << 1),
824 IEEE80211_MEASUREMENT_REQUEST = (1 << 2),
825 IEEE80211_MEASUREMENT_REPORT = (1 << 3),
826 /* Bits 4-7 are reserved */
830 IEEE80211_REPORT_BASIC = 0, /* required */
831 IEEE80211_REPORT_CCA = 1, /* optional */
832 IEEE80211_REPORT_RPI = 2, /* optional */
836 struct ieee80211_measurement_params {
840 } __attribute__ ((packed));
842 struct ieee80211_measurement_request {
843 struct ieee80211_info_element ie;
847 struct ieee80211_measurement_params params[0];
848 } __attribute__ ((packed));
850 struct ieee80211_measurement_report {
851 struct ieee80211_info_element ie;
856 struct ieee80211_basic_report basic[0];
858 } __attribute__ ((packed));
860 struct ieee80211_tpc_report {
863 } __attribute__ ((packed));
865 struct ieee80211_channel_map {
868 } __attribute__ ((packed));
870 struct ieee80211_ibss_dfs {
871 struct ieee80211_info_element ie;
873 u8 recovery_interval;
874 struct ieee80211_channel_map channel_map[0];
877 struct ieee80211_csa {
881 } __attribute__ ((packed));
883 struct ieee80211_quiet {
888 } __attribute__ ((packed));
890 struct ieee80211_network {
891 /* These entries are used to identify a unique network */
894 /* Ensure null-terminated for any debug msgs */
895 u8 ssid[IW_ESSID_MAX_SIZE + 1];
898 struct ieee80211_qos_data qos_data;
900 /* These are network statistics */
901 struct ieee80211_rx_stats stats;
903 u8 rates[MAX_RATES_LENGTH];
905 u8 rates_ex[MAX_RATES_EX_LENGTH];
907 unsigned long last_scanned;
916 u8 wpa_ie[MAX_WPA_IE_LEN];
918 u8 rsn_ie[MAX_WPA_IE_LEN];
920 struct ieee80211_tim_parameters tim;
924 /* Power Constraint - mandatory if spctrm mgmt required */
927 /* TPC Report - mandatory if spctrm mgmt required */
928 struct ieee80211_tpc_report tpc_report;
930 /* IBSS DFS - mandatory if spctrm mgmt required and IBSS
931 * NOTE: This is variable length and so must be allocated dynamically */
932 struct ieee80211_ibss_dfs *ibss_dfs;
934 /* Channel Switch Announcement - optional if spctrm mgmt required */
935 struct ieee80211_csa csa;
937 /* Quiet - optional if spctrm mgmt required */
938 struct ieee80211_quiet quiet;
940 struct list_head list;
943 enum ieee80211_state {
944 IEEE80211_UNINITIALIZED = 0,
945 IEEE80211_INITIALIZED,
946 IEEE80211_ASSOCIATING,
947 IEEE80211_ASSOCIATED,
948 IEEE80211_AUTHENTICATING,
949 IEEE80211_AUTHENTICATED,
953 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
954 #define DEFAULT_FTS 2346
956 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
957 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
958 #define CFG_IEEE80211_RTS (1<<2)
960 #define IEEE80211_24GHZ_MIN_CHANNEL 1
961 #define IEEE80211_24GHZ_MAX_CHANNEL 14
962 #define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \
963 IEEE80211_24GHZ_MIN_CHANNEL + 1)
965 #define IEEE80211_52GHZ_MIN_CHANNEL 34
966 #define IEEE80211_52GHZ_MAX_CHANNEL 165
967 #define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \
968 IEEE80211_52GHZ_MIN_CHANNEL + 1)
971 IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
972 IEEE80211_CH_80211H_RULES = (1 << 1),
973 IEEE80211_CH_B_ONLY = (1 << 2),
974 IEEE80211_CH_NO_IBSS = (1 << 3),
975 IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
976 IEEE80211_CH_RADAR_DETECT = (1 << 5),
977 IEEE80211_CH_INVALID = (1 << 6),
980 struct ieee80211_channel {
981 u32 freq; /* in MHz */
984 u8 max_power; /* in dBm */
987 struct ieee80211_geo {
991 struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
992 struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
995 struct ieee80211_device {
996 struct net_device *dev;
997 struct ieee80211_security sec;
999 /* Bookkeeping structures */
1000 struct net_device_stats stats;
1001 struct ieee80211_stats ieee_stats;
1003 struct ieee80211_geo geo;
1005 /* Probe / Beacon management */
1006 struct list_head network_free_list;
1007 struct list_head network_list;
1008 struct ieee80211_network *networks;
1012 int iw_mode; /* operating mode (IW_MODE_*) */
1013 struct iw_spy_data spy_data; /* iwspy support */
1017 int tx_headroom; /* Set to size of any additional room needed at front
1018 * of allocated Tx SKBs */
1021 /* WEP and other encryption related settings at the device level */
1022 int open_wep; /* Set to 1 to allow unencrypted frames */
1024 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
1025 * WEP key changes */
1027 /* If the host performs {en,de}cryption, then set to 1 */
1029 int host_encrypt_msdu;
1031 /* host performs multicast decryption */
1032 int host_mc_decrypt;
1034 /* host should strip IV and ICV from protected frames */
1035 /* meaningful only when hardware decryption is being used */
1036 int host_strip_iv_icv;
1040 int ieee802_1x; /* is IEEE 802.1X used */
1044 int drop_unencrypted;
1045 int privacy_invoked;
1049 struct list_head crypt_deinit_list;
1050 struct ieee80211_crypt_data *crypt[WEP_KEYS];
1051 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
1052 struct timer_list crypt_deinit_timer;
1055 int bcrx_sta_key; /* use individual keys to override default keys even
1056 * with RX of broad/multicast frames */
1058 /* Fragmentation structures */
1059 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
1060 unsigned int frag_next_idx;
1061 u16 fts; /* Fragmentation Threshold */
1062 u16 rts; /* RTS threshold */
1064 /* Association info */
1067 enum ieee80211_state state;
1069 int mode; /* A, B, G */
1070 int modulation; /* CCK, OFDM */
1071 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
1072 int abg_true; /* ABG flag */
1077 u16 prev_seq_ctl; /* used to drop duplicate frames */
1079 /* Callback functions */
1080 void (*set_security) (struct net_device * dev,
1081 struct ieee80211_security * sec);
1082 int (*hard_start_xmit) (struct ieee80211_txb * txb,
1083 struct net_device * dev, int pri);
1084 int (*reset_port) (struct net_device * dev);
1085 int (*is_queue_full) (struct net_device * dev, int pri);
1087 int (*handle_management) (struct net_device * dev,
1088 struct ieee80211_network * network, u16 type);
1089 int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb);
1091 /* Typical STA methods */
1092 int (*handle_auth) (struct net_device * dev,
1093 struct ieee80211_auth * auth);
1094 int (*handle_deauth) (struct net_device * dev,
1095 struct ieee80211_deauth * auth);
1096 int (*handle_action) (struct net_device * dev,
1097 struct ieee80211_action * action,
1098 struct ieee80211_rx_stats * stats);
1099 int (*handle_disassoc) (struct net_device * dev,
1100 struct ieee80211_disassoc * assoc);
1101 int (*handle_beacon) (struct net_device * dev,
1102 struct ieee80211_beacon * beacon,
1103 struct ieee80211_network * network);
1104 int (*handle_probe_response) (struct net_device * dev,
1105 struct ieee80211_probe_response * resp,
1106 struct ieee80211_network * network);
1107 int (*handle_probe_request) (struct net_device * dev,
1108 struct ieee80211_probe_request * req,
1109 struct ieee80211_rx_stats * stats);
1110 int (*handle_assoc_response) (struct net_device * dev,
1111 struct ieee80211_assoc_response * resp,
1112 struct ieee80211_network * network);
1114 /* Typical AP methods */
1115 int (*handle_assoc_request) (struct net_device * dev);
1116 int (*handle_reassoc_request) (struct net_device * dev,
1117 struct ieee80211_reassoc_request * req);
1119 /* This must be the last item so that it points to the data
1120 * allocated beyond this structure by alloc_ieee80211 */
1124 #define IEEE_A (1<<0)
1125 #define IEEE_B (1<<1)
1126 #define IEEE_G (1<<2)
1127 #define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
1129 static inline void *ieee80211_priv(struct net_device *dev)
1131 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
1134 static inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
1138 * It is possible for both access points and our device to support
1139 * combinations of modes, so as long as there is one valid combination
1140 * of ap/device supported modes, then return success
1143 if ((mode & IEEE_A) &&
1144 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1145 (ieee->freq_band & IEEE80211_52GHZ_BAND))
1148 if ((mode & IEEE_G) &&
1149 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1150 (ieee->freq_band & IEEE80211_24GHZ_BAND))
1153 if ((mode & IEEE_B) &&
1154 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
1155 (ieee->freq_band & IEEE80211_24GHZ_BAND))
1161 static inline int ieee80211_get_hdrlen(u16 fc)
1163 int hdrlen = IEEE80211_3ADDR_LEN;
1164 u16 stype = WLAN_FC_GET_STYPE(fc);
1166 switch (WLAN_FC_GET_TYPE(fc)) {
1167 case IEEE80211_FTYPE_DATA:
1168 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
1169 hdrlen = IEEE80211_4ADDR_LEN;
1170 if (stype & IEEE80211_STYPE_QOS_DATA)
1173 case IEEE80211_FTYPE_CTL:
1174 switch (WLAN_FC_GET_STYPE(fc)) {
1175 case IEEE80211_STYPE_CTS:
1176 case IEEE80211_STYPE_ACK:
1177 hdrlen = IEEE80211_1ADDR_LEN;
1180 hdrlen = IEEE80211_2ADDR_LEN;
1189 static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
1191 switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
1192 case IEEE80211_1ADDR_LEN:
1193 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
1194 case IEEE80211_2ADDR_LEN:
1195 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
1196 case IEEE80211_3ADDR_LEN:
1197 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
1198 case IEEE80211_4ADDR_LEN:
1199 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
1204 static inline int ieee80211_is_ofdm_rate(u8 rate)
1206 switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1207 case IEEE80211_OFDM_RATE_6MB:
1208 case IEEE80211_OFDM_RATE_9MB:
1209 case IEEE80211_OFDM_RATE_12MB:
1210 case IEEE80211_OFDM_RATE_18MB:
1211 case IEEE80211_OFDM_RATE_24MB:
1212 case IEEE80211_OFDM_RATE_36MB:
1213 case IEEE80211_OFDM_RATE_48MB:
1214 case IEEE80211_OFDM_RATE_54MB:
1220 static inline int ieee80211_is_cck_rate(u8 rate)
1222 switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1223 case IEEE80211_CCK_RATE_1MB:
1224 case IEEE80211_CCK_RATE_2MB:
1225 case IEEE80211_CCK_RATE_5MB:
1226 case IEEE80211_CCK_RATE_11MB:
1233 extern void free_ieee80211(struct net_device *dev);
1234 extern struct net_device *alloc_ieee80211(int sizeof_priv);
1236 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1238 /* ieee80211_tx.c */
1239 extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1240 extern void ieee80211_txb_free(struct ieee80211_txb *);
1242 /* ieee80211_rx.c */
1243 extern void ieee80211_rx_any(struct ieee80211_device *ieee,
1244 struct sk_buff *skb, struct ieee80211_rx_stats *stats);
1245 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
1246 struct ieee80211_rx_stats *rx_stats);
1247 /* make sure to set stats->len */
1248 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1249 struct ieee80211_hdr_4addr *header,
1250 struct ieee80211_rx_stats *stats);
1251 extern void ieee80211_network_reset(struct ieee80211_network *network);
1253 /* ieee80211_geo.c */
1254 extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1256 extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1257 const struct ieee80211_geo *geo);
1259 extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1261 extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1263 extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1264 extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
1266 extern const struct ieee80211_channel *ieee80211_get_channel(struct
1269 extern u32 ieee80211_channel_to_freq(struct ieee80211_device * ieee,
1272 /* ieee80211_wx.c */
1273 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1274 struct iw_request_info *info,
1275 union iwreq_data *wrqu, char *key);
1276 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1277 struct iw_request_info *info,
1278 union iwreq_data *wrqu, char *key);
1279 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1280 struct iw_request_info *info,
1281 union iwreq_data *wrqu, char *key);
1282 extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1283 struct iw_request_info *info,
1284 union iwreq_data *wrqu, char *extra);
1285 extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1286 struct iw_request_info *info,
1287 union iwreq_data *wrqu, char *extra);
1289 static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1294 static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1299 #endif /* IEEE80211_H */