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 <jkmaline@cc.hut.fi>
12 * Adaption to a generic IEEE 802.11 stack by James Ketrenos
13 * <jketreno@linux.intel.com>
14 * Copyright (c) 2004, 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
23 #include <linux/if_ether.h> /* ETH_ALEN */
24 #include <linux/kernel.h> /* ARRAY_SIZE */
25 #include <linux/wireless.h>
27 #define IEEE80211_DATA_LEN 2304
28 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
31 The figure in section 7.1.2 suggests a body size of up to 2312
32 bytes is allowed, which is a bit confusing, I suspect this
33 represents the 2304 bytes of real data, plus a possible 8 bytes of
34 WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
36 #define IEEE80211_1ADDR_LEN 10
37 #define IEEE80211_2ADDR_LEN 16
38 #define IEEE80211_3ADDR_LEN 24
39 #define IEEE80211_4ADDR_LEN 30
40 #define IEEE80211_FCS_LEN 4
41 #define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
42 #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
44 #define MIN_FRAG_THRESHOLD 256U
45 #define MAX_FRAG_THRESHOLD 2346U
47 /* Frame control field constants */
48 #define IEEE80211_FCTL_VERS 0x0003
49 #define IEEE80211_FCTL_FTYPE 0x000c
50 #define IEEE80211_FCTL_STYPE 0x00f0
51 #define IEEE80211_FCTL_TODS 0x0100
52 #define IEEE80211_FCTL_FROMDS 0x0200
53 #define IEEE80211_FCTL_MOREFRAGS 0x0400
54 #define IEEE80211_FCTL_RETRY 0x0800
55 #define IEEE80211_FCTL_PM 0x1000
56 #define IEEE80211_FCTL_MOREDATA 0x2000
57 #define IEEE80211_FCTL_PROTECTED 0x4000
58 #define IEEE80211_FCTL_ORDER 0x8000
60 #define IEEE80211_FTYPE_MGMT 0x0000
61 #define IEEE80211_FTYPE_CTL 0x0004
62 #define IEEE80211_FTYPE_DATA 0x0008
65 #define IEEE80211_STYPE_ASSOC_REQ 0x0000
66 #define IEEE80211_STYPE_ASSOC_RESP 0x0010
67 #define IEEE80211_STYPE_REASSOC_REQ 0x0020
68 #define IEEE80211_STYPE_REASSOC_RESP 0x0030
69 #define IEEE80211_STYPE_PROBE_REQ 0x0040
70 #define IEEE80211_STYPE_PROBE_RESP 0x0050
71 #define IEEE80211_STYPE_BEACON 0x0080
72 #define IEEE80211_STYPE_ATIM 0x0090
73 #define IEEE80211_STYPE_DISASSOC 0x00A0
74 #define IEEE80211_STYPE_AUTH 0x00B0
75 #define IEEE80211_STYPE_DEAUTH 0x00C0
76 #define IEEE80211_STYPE_ACTION 0x00D0
79 #define IEEE80211_STYPE_PSPOLL 0x00A0
80 #define IEEE80211_STYPE_RTS 0x00B0
81 #define IEEE80211_STYPE_CTS 0x00C0
82 #define IEEE80211_STYPE_ACK 0x00D0
83 #define IEEE80211_STYPE_CFEND 0x00E0
84 #define IEEE80211_STYPE_CFENDACK 0x00F0
87 #define IEEE80211_STYPE_DATA 0x0000
88 #define IEEE80211_STYPE_DATA_CFACK 0x0010
89 #define IEEE80211_STYPE_DATA_CFPOLL 0x0020
90 #define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
91 #define IEEE80211_STYPE_NULLFUNC 0x0040
92 #define IEEE80211_STYPE_CFACK 0x0050
93 #define IEEE80211_STYPE_CFPOLL 0x0060
94 #define IEEE80211_STYPE_CFACKPOLL 0x0070
96 #define IEEE80211_SCTL_FRAG 0x000F
97 #define IEEE80211_SCTL_SEQ 0xFFF0
101 #ifdef CONFIG_IEEE80211_DEBUG
102 extern u32 ieee80211_debug_level;
103 #define IEEE80211_DEBUG(level, fmt, args...) \
104 do { if (ieee80211_debug_level & (level)) \
105 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
106 in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
108 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
109 #endif /* CONFIG_IEEE80211_DEBUG */
111 /* debug macros not dependent on CONFIG_IEEE80211_DEBUG */
113 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
114 #define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
116 /* escape_essid() is intended to be used in debug (and possibly error)
117 * messages. It should never be used for passing essid to user space. */
118 const char *escape_essid(const char *essid, u8 essid_len);
121 * To use the debug system:
123 * If you are defining a new debug classification, simply add it to the #define
124 * list here in the form of:
126 * #define IEEE80211_DL_xxxx VALUE
128 * shifting value to the left one bit from the previous entry. xxxx should be
129 * the name of the classification (for example, WEP)
131 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
132 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
133 * to send output to that classification.
135 * To add your debug level to the list of levels seen when you perform
137 * % cat /proc/net/ieee80211/debug_level
139 * you simply need to add your entry to the ieee80211_debug_level array.
141 * If you do not see debug_level in /proc/net/ieee80211 then you do not have
142 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
146 #define IEEE80211_DL_INFO (1<<0)
147 #define IEEE80211_DL_WX (1<<1)
148 #define IEEE80211_DL_SCAN (1<<2)
149 #define IEEE80211_DL_STATE (1<<3)
150 #define IEEE80211_DL_MGMT (1<<4)
151 #define IEEE80211_DL_FRAG (1<<5)
152 #define IEEE80211_DL_DROP (1<<7)
154 #define IEEE80211_DL_TX (1<<8)
155 #define IEEE80211_DL_RX (1<<9)
157 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
158 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
159 #define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
161 #define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
162 #define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
163 #define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
164 #define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
165 #define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
166 #define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
167 #define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
168 #define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
169 #include <linux/netdevice.h>
170 #include <linux/wireless.h>
171 #include <linux/if_arp.h> /* ARPHRD_ETHER */
174 #define WIRELESS_SPY /* enable iwspy support */
176 #include <net/iw_handler.h> /* new driver API */
179 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
180 #endif /* ETH_P_PAE */
182 #define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
184 #ifndef ETH_P_80211_RAW
185 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
188 /* IEEE 802.11 defines */
190 #define P80211_OUI_LEN 3
192 struct ieee80211_snap_hdr {
194 u8 dsap; /* always 0xAA */
195 u8 ssap; /* always 0xAA */
196 u8 ctrl; /* always 0x03 */
197 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
199 } __attribute__ ((packed));
201 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
203 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
204 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
205 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
207 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
208 #define WLAN_GET_SEQ_SEQ(seq) ((seq) & IEEE80211_SCTL_SEQ)
210 /* Authentication algorithms */
211 #define WLAN_AUTH_OPEN 0
212 #define WLAN_AUTH_SHARED_KEY 1
214 #define WLAN_AUTH_CHALLENGE_LEN 128
216 #define WLAN_CAPABILITY_ESS (1<<0)
217 #define WLAN_CAPABILITY_IBSS (1<<1)
218 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
219 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
220 #define WLAN_CAPABILITY_PRIVACY (1<<4)
221 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
222 #define WLAN_CAPABILITY_PBCC (1<<6)
223 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
224 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
225 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
226 #define WLAN_CAPABILITY_OSSS_OFDM (1<<13)
229 enum ieee80211_statuscode {
230 WLAN_STATUS_SUCCESS = 0,
231 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
232 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
233 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
234 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
235 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
236 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
237 WLAN_STATUS_CHALLENGE_FAIL = 15,
238 WLAN_STATUS_AUTH_TIMEOUT = 16,
239 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
240 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
242 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
243 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
244 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
246 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
247 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
248 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
250 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
251 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
253 WLAN_STATUS_INVALID_IE = 40,
254 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
255 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
256 WLAN_STATUS_INVALID_AKMP = 43,
257 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
258 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
259 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
263 enum ieee80211_reasoncode {
264 WLAN_REASON_UNSPECIFIED = 1,
265 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
266 WLAN_REASON_DEAUTH_LEAVING = 3,
267 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
268 WLAN_REASON_DISASSOC_AP_BUSY = 5,
269 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
270 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
271 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
272 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
274 WLAN_REASON_DISASSOC_BAD_POWER = 10,
275 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
277 WLAN_REASON_INVALID_IE = 13,
278 WLAN_REASON_MIC_FAILURE = 14,
279 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
280 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
281 WLAN_REASON_IE_DIFFERENT = 17,
282 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
283 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
284 WLAN_REASON_INVALID_AKMP = 20,
285 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
286 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
287 WLAN_REASON_IEEE8021X_FAILED = 23,
288 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
291 #define IEEE80211_STATMASK_SIGNAL (1<<0)
292 #define IEEE80211_STATMASK_RSSI (1<<1)
293 #define IEEE80211_STATMASK_NOISE (1<<2)
294 #define IEEE80211_STATMASK_RATE (1<<3)
295 #define IEEE80211_STATMASK_WEMASK 0x7
297 #define IEEE80211_CCK_MODULATION (1<<0)
298 #define IEEE80211_OFDM_MODULATION (1<<1)
300 #define IEEE80211_24GHZ_BAND (1<<0)
301 #define IEEE80211_52GHZ_BAND (1<<1)
303 #define IEEE80211_CCK_RATE_1MB 0x02
304 #define IEEE80211_CCK_RATE_2MB 0x04
305 #define IEEE80211_CCK_RATE_5MB 0x0B
306 #define IEEE80211_CCK_RATE_11MB 0x16
307 #define IEEE80211_OFDM_RATE_6MB 0x0C
308 #define IEEE80211_OFDM_RATE_9MB 0x12
309 #define IEEE80211_OFDM_RATE_12MB 0x18
310 #define IEEE80211_OFDM_RATE_18MB 0x24
311 #define IEEE80211_OFDM_RATE_24MB 0x30
312 #define IEEE80211_OFDM_RATE_36MB 0x48
313 #define IEEE80211_OFDM_RATE_48MB 0x60
314 #define IEEE80211_OFDM_RATE_54MB 0x6C
315 #define IEEE80211_BASIC_RATE_MASK 0x80
317 #define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
318 #define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
319 #define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
320 #define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
321 #define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
322 #define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
323 #define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
324 #define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
325 #define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
326 #define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
327 #define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
328 #define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
330 #define IEEE80211_CCK_RATES_MASK 0x0000000F
331 #define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
332 IEEE80211_CCK_RATE_2MB_MASK)
333 #define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
334 IEEE80211_CCK_RATE_5MB_MASK | \
335 IEEE80211_CCK_RATE_11MB_MASK)
337 #define IEEE80211_OFDM_RATES_MASK 0x00000FF0
338 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
339 IEEE80211_OFDM_RATE_12MB_MASK | \
340 IEEE80211_OFDM_RATE_24MB_MASK)
341 #define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
342 IEEE80211_OFDM_RATE_9MB_MASK | \
343 IEEE80211_OFDM_RATE_18MB_MASK | \
344 IEEE80211_OFDM_RATE_36MB_MASK | \
345 IEEE80211_OFDM_RATE_48MB_MASK | \
346 IEEE80211_OFDM_RATE_54MB_MASK)
347 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
348 IEEE80211_CCK_DEFAULT_RATES_MASK)
350 #define IEEE80211_NUM_OFDM_RATES 8
351 #define IEEE80211_NUM_CCK_RATES 4
352 #define IEEE80211_OFDM_SHIFT_MASK_A 4
354 /* NOTE: This data is for statistical purposes; not all hardware provides this
355 * information for frames received. Not setting these will not cause
356 * any adverse affects. */
357 struct ieee80211_rx_stats {
362 u16 rate; /* in 100 kbps */
370 /* IEEE 802.11 requires that STA supports concurrent reception of at least
371 * three fragmented frames. This define can be increased to support more
372 * concurrent frames, but it should be noted that each entry can consume about
373 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
374 #define IEEE80211_FRAG_CACHE_LEN 4
376 struct ieee80211_frag_entry {
377 unsigned long first_frag_time;
379 unsigned int last_frag;
381 u8 src_addr[ETH_ALEN];
382 u8 dst_addr[ETH_ALEN];
385 struct ieee80211_stats {
386 unsigned int tx_unicast_frames;
387 unsigned int tx_multicast_frames;
388 unsigned int tx_fragments;
389 unsigned int tx_unicast_octets;
390 unsigned int tx_multicast_octets;
391 unsigned int tx_deferred_transmissions;
392 unsigned int tx_single_retry_frames;
393 unsigned int tx_multiple_retry_frames;
394 unsigned int tx_retry_limit_exceeded;
395 unsigned int tx_discards;
396 unsigned int rx_unicast_frames;
397 unsigned int rx_multicast_frames;
398 unsigned int rx_fragments;
399 unsigned int rx_unicast_octets;
400 unsigned int rx_multicast_octets;
401 unsigned int rx_fcs_errors;
402 unsigned int rx_discards_no_buffer;
403 unsigned int tx_discards_wrong_sa;
404 unsigned int rx_discards_undecryptable;
405 unsigned int rx_message_in_msg_fragments;
406 unsigned int rx_message_in_bad_msg_fragments;
409 struct ieee80211_device;
411 #include "ieee80211_crypt.h"
413 #define SEC_KEY_1 (1<<0)
414 #define SEC_KEY_2 (1<<1)
415 #define SEC_KEY_3 (1<<2)
416 #define SEC_KEY_4 (1<<3)
417 #define SEC_ACTIVE_KEY (1<<4)
418 #define SEC_AUTH_MODE (1<<5)
419 #define SEC_UNICAST_GROUP (1<<6)
420 #define SEC_LEVEL (1<<7)
421 #define SEC_ENABLED (1<<8)
422 #define SEC_ENCRYPT (1<<9)
424 #define SEC_LEVEL_0 0 /* None */
425 #define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
426 #define SEC_LEVEL_2 2 /* Level 1 + TKIP */
427 #define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
428 #define SEC_LEVEL_3 4 /* Level 2 + CCMP */
430 #define SEC_ALG_NONE 0
431 #define SEC_ALG_WEP 1
432 #define SEC_ALG_TKIP 2
433 #define SEC_ALG_CCMP 3
436 #define WEP_KEY_LEN 13
437 #define SCM_KEY_LEN 32
438 #define SCM_TEMPORAL_KEY_LENGTH 16
440 struct ieee80211_security {
443 auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
444 u8 encode_alg[WEP_KEYS];
445 u8 key_sizes[WEP_KEYS];
446 u8 keys[WEP_KEYS][SCM_KEY_LEN];
449 } __attribute__ ((packed));
453 802.11 data frame from AP
455 ,-------------------------------------------------------------------.
456 Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
457 |------|------|---------|---------|---------|------|---------|------|
458 Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
459 | | tion | (BSSID) | | | ence | data | |
460 `-------------------------------------------------------------------'
466 #define BEACON_PROBE_SSID_ID_POSITION 12
468 /* Management Frame Information Element Types */
469 enum ieee80211_mfie {
472 MFIE_TYPE_FH_SET = 2,
473 MFIE_TYPE_DS_SET = 3,
474 MFIE_TYPE_CF_SET = 4,
476 MFIE_TYPE_IBSS_SET = 6,
477 MFIE_TYPE_COUNTRY = 7,
478 MFIE_TYPE_HOP_PARAMS = 8,
479 MFIE_TYPE_HOP_TABLE = 9,
480 MFIE_TYPE_REQUEST = 10,
481 MFIE_TYPE_CHALLENGE = 16,
482 MFIE_TYPE_POWER_CONSTRAINT = 32,
483 MFIE_TYPE_POWER_CAPABILITY = 33,
484 MFIE_TYPE_TPC_REQUEST = 34,
485 MFIE_TYPE_TPC_REPORT = 35,
486 MFIE_TYPE_SUPP_CHANNELS = 36,
488 MFIE_TYPE_MEASURE_REQUEST = 38,
489 MFIE_TYPE_MEASURE_REPORT = 39,
490 MFIE_TYPE_QUIET = 40,
491 MFIE_TYPE_IBSS_DFS = 41,
492 MFIE_TYPE_ERP_INFO = 42,
494 MFIE_TYPE_RATES_EX = 50,
495 MFIE_TYPE_GENERIC = 221,
498 /* Minimal header; can be used for passing 802.11 frames with sufficient
499 * information to determine what type of underlying data type is actually
500 * stored in the data. */
501 struct ieee80211_hdr {
505 } __attribute__ ((packed));
507 struct ieee80211_hdr_1addr {
512 } __attribute__ ((packed));
514 struct ieee80211_hdr_2addr {
520 } __attribute__ ((packed));
522 struct ieee80211_hdr_3addr {
530 } __attribute__ ((packed));
532 struct ieee80211_hdr_4addr {
541 } __attribute__ ((packed));
543 struct ieee80211_info_element {
547 } __attribute__ ((packed));
550 * These are the data types that can make up management packets
556 u8 current_ap[ETH_ALEN];
559 u16 association_id:14, reserved:2;
560 } __attribute__ ((packed));
566 struct ieee80211_auth {
567 struct ieee80211_hdr_3addr header;
571 struct ieee80211_info_element info_element[0];
572 } __attribute__ ((packed));
574 struct ieee80211_disassoc {
575 struct ieee80211_hdr_3addr header;
577 struct ieee80211_info_element info_element[0];
578 } __attribute__ ((packed));
580 struct ieee80211_probe_request {
581 struct ieee80211_hdr_3addr header;
582 struct ieee80211_info_element info_element[0];
583 } __attribute__ ((packed));
585 struct ieee80211_probe_response {
586 struct ieee80211_hdr_3addr header;
588 __le16 beacon_interval;
590 struct ieee80211_info_element info_element[0];
591 } __attribute__ ((packed));
593 /* Alias beacon for probe_response */
594 #define ieee80211_beacon ieee80211_probe_response
596 struct ieee80211_assoc_request {
597 struct ieee80211_hdr_3addr header;
600 struct ieee80211_info_element info_element[0];
601 } __attribute__ ((packed));
603 struct ieee80211_reassoc_request {
604 struct ieee80211_hdr_3addr header;
606 __le16 listen_interval;
607 u8 current_ap[ETH_ALEN];
608 struct ieee80211_info_element info_element[0];
609 } __attribute__ ((packed));
611 struct ieee80211_assoc_response {
612 struct ieee80211_hdr_3addr header;
616 struct ieee80211_info_element info_element[0]; /* supported rates */
617 } __attribute__ ((packed));
619 struct ieee80211_txb {
626 struct sk_buff *fragments[0];
629 /* SWEEP TABLE ENTRIES NUMBER */
630 #define MAX_SWEEP_TAB_ENTRIES 42
631 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
632 /* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
633 * only use 8, and then use extended rates for the remaining supported
634 * rates. Other APs, however, stick all of their supported rates on the
635 * main rates information element... */
636 #define MAX_RATES_LENGTH ((u8)12)
637 #define MAX_RATES_EX_LENGTH ((u8)16)
638 #define MAX_NETWORK_COUNT 128
640 #define CRC_LENGTH 4U
642 #define MAX_WPA_IE_LEN 64
644 #define NETWORK_EMPTY_ESSID (1<<0)
645 #define NETWORK_HAS_OFDM (1<<1)
646 #define NETWORK_HAS_CCK (1<<2)
648 struct ieee80211_network {
649 /* These entries are used to identify a unique network */
652 /* Ensure null-terminated for any debug msgs */
653 u8 ssid[IW_ESSID_MAX_SIZE + 1];
656 /* These are network statistics */
657 struct ieee80211_rx_stats stats;
659 u8 rates[MAX_RATES_LENGTH];
661 u8 rates_ex[MAX_RATES_EX_LENGTH];
663 unsigned long last_scanned;
671 u8 wpa_ie[MAX_WPA_IE_LEN];
673 u8 rsn_ie[MAX_WPA_IE_LEN];
675 struct list_head list;
678 enum ieee80211_state {
679 IEEE80211_UNINITIALIZED = 0,
680 IEEE80211_INITIALIZED,
681 IEEE80211_ASSOCIATING,
682 IEEE80211_ASSOCIATED,
683 IEEE80211_AUTHENTICATING,
684 IEEE80211_AUTHENTICATED,
688 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
689 #define DEFAULT_FTS 2346
691 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
692 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
693 #define CFG_IEEE80211_RTS (1<<2)
695 struct ieee80211_device {
696 struct net_device *dev;
697 struct ieee80211_security sec;
699 /* Bookkeeping structures */
700 struct net_device_stats stats;
701 struct ieee80211_stats ieee_stats;
703 /* Probe / Beacon management */
704 struct list_head network_free_list;
705 struct list_head network_list;
706 struct ieee80211_network *networks;
710 int iw_mode; /* operating mode (IW_MODE_*) */
711 struct iw_spy_data spy_data; /* iwspy support */
715 int tx_headroom; /* Set to size of any additional room needed at front
716 * of allocated Tx SKBs */
719 /* WEP and other encryption related settings at the device level */
720 int open_wep; /* Set to 1 to allow unencrypted frames */
722 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
725 /* If the host performs {en,de}cryption, then set to 1 */
728 int ieee802_1x; /* is IEEE 802.1X used */
732 int drop_unencrypted;
733 int tkip_countermeasures;
738 struct list_head crypt_deinit_list;
739 struct ieee80211_crypt_data *crypt[WEP_KEYS];
740 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
741 struct timer_list crypt_deinit_timer;
744 int bcrx_sta_key; /* use individual keys to override default keys even
745 * with RX of broad/multicast frames */
747 /* Fragmentation structures */
748 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
749 unsigned int frag_next_idx;
750 u16 fts; /* Fragmentation Threshold */
751 u16 rts; /* RTS threshold */
753 /* Association info */
756 enum ieee80211_state state;
758 int mode; /* A, B, G */
759 int modulation; /* CCK, OFDM */
760 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
761 int abg_true; /* ABG flag */
766 /* Callback functions */
767 void (*set_security) (struct net_device * dev,
768 struct ieee80211_security * sec);
769 int (*hard_start_xmit) (struct ieee80211_txb * txb,
770 struct net_device * dev);
771 int (*reset_port) (struct net_device * dev);
772 int (*is_queue_full) (struct net_device * dev, int pri);
774 /* Typical STA methods */
775 int (*handle_auth) (struct net_device * dev,
776 struct ieee80211_auth * auth);
777 int (*handle_disassoc) (struct net_device * dev,
778 struct ieee80211_disassoc * assoc);
779 int (*handle_beacon) (struct net_device * dev,
780 struct ieee80211_beacon * beacon,
781 struct ieee80211_network * network);
782 int (*handle_probe_response) (struct net_device * dev,
783 struct ieee80211_probe_response * resp,
784 struct ieee80211_network * network);
785 int (*handle_assoc_response) (struct net_device * dev,
786 struct ieee80211_assoc_response * resp,
787 struct ieee80211_network * network);
789 /* Typical AP methods */
790 int (*handle_assoc_request) (struct net_device * dev);
791 int (*handle_reassoc_request) (struct net_device * dev,
792 struct ieee80211_reassoc_request * req);
794 /* This must be the last item so that it points to the data
795 * allocated beyond this structure by alloc_ieee80211 */
799 #define IEEE_A (1<<0)
800 #define IEEE_B (1<<1)
801 #define IEEE_G (1<<2)
802 #define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
804 extern inline void *ieee80211_priv(struct net_device *dev)
806 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
809 extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
811 /* Single white space is for Linksys APs */
812 if (essid_len == 1 && essid[0] == ' ')
815 /* Otherwise, if the entire essid is 0, we assume it is hidden */
818 if (essid[essid_len] != '\0')
825 extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
829 * It is possible for both access points and our device to support
830 * combinations of modes, so as long as there is one valid combination
831 * of ap/device supported modes, then return success
834 if ((mode & IEEE_A) &&
835 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
836 (ieee->freq_band & IEEE80211_52GHZ_BAND))
839 if ((mode & IEEE_G) &&
840 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
841 (ieee->freq_band & IEEE80211_24GHZ_BAND))
844 if ((mode & IEEE_B) &&
845 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
846 (ieee->freq_band & IEEE80211_24GHZ_BAND))
852 extern inline int ieee80211_get_hdrlen(u16 fc)
854 int hdrlen = IEEE80211_3ADDR_LEN;
856 switch (WLAN_FC_GET_TYPE(fc)) {
857 case IEEE80211_FTYPE_DATA:
858 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
859 hdrlen = IEEE80211_4ADDR_LEN;
861 case IEEE80211_FTYPE_CTL:
862 switch (WLAN_FC_GET_STYPE(fc)) {
863 case IEEE80211_STYPE_CTS:
864 case IEEE80211_STYPE_ACK:
865 hdrlen = IEEE80211_1ADDR_LEN;
868 hdrlen = IEEE80211_2ADDR_LEN;
877 extern inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
879 switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
880 case IEEE80211_1ADDR_LEN:
881 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
882 case IEEE80211_2ADDR_LEN:
883 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
884 case IEEE80211_3ADDR_LEN:
885 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
886 case IEEE80211_4ADDR_LEN:
887 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
893 extern void free_ieee80211(struct net_device *dev);
894 extern struct net_device *alloc_ieee80211(int sizeof_priv);
896 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
899 extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
900 extern void ieee80211_txb_free(struct ieee80211_txb *);
901 extern int ieee80211_tx_frame(struct ieee80211_device *ieee,
902 struct ieee80211_hdr *frame, int len);
905 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
906 struct ieee80211_rx_stats *rx_stats);
907 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
908 struct ieee80211_hdr_4addr *header,
909 struct ieee80211_rx_stats *stats);
912 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
913 struct iw_request_info *info,
914 union iwreq_data *wrqu, char *key);
915 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
916 struct iw_request_info *info,
917 union iwreq_data *wrqu, char *key);
918 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
919 struct iw_request_info *info,
920 union iwreq_data *wrqu, char *key);
921 #if WIRELESS_EXT > 17
922 extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
923 struct iw_request_info *info,
924 union iwreq_data *wrqu, char *extra);
925 extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
926 struct iw_request_info *info,
927 union iwreq_data *wrqu, char *extra);
930 extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
935 extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
940 #endif /* IEEE80211_H */