blob: c7ab7cd9de133a185ecd6efd309c0235790ca895 [file] [log] [blame]
Jeff Garzikb4538722005-05-12 22:48:20 -04001/*
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, 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#ifndef IEEE80211_H
22#define IEEE80211_H
James Ketrenos74079fd2005-09-13 17:35:21 -050023#include <linux/if_ether.h> /* ETH_ALEN */
24#include <linux/kernel.h> /* ARRAY_SIZE */
Adrian Bunkb7721ff2005-07-22 23:39:12 +020025#include <linux/wireless.h>
Jeff Garzikb4538722005-05-12 22:48:20 -040026
Jeff Garzikb4538722005-05-12 22:48:20 -040027#define IEEE80211_DATA_LEN 2304
28/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
29 6.2.1.1.2.
30
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) */
35
Jeff Garzikb4538722005-05-12 22:48:20 -040036#define IEEE80211_HLEN 30
37#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
38
39struct ieee80211_hdr {
Jiri Benc099c5bb2005-08-25 20:15:10 -040040 __le16 frame_ctl;
41 __le16 duration_id;
Jeff Garzikb4538722005-05-12 22:48:20 -040042 u8 addr1[ETH_ALEN];
43 u8 addr2[ETH_ALEN];
44 u8 addr3[ETH_ALEN];
Jiri Benc099c5bb2005-08-25 20:15:10 -040045 __le16 seq_ctl;
Jeff Garzikb4538722005-05-12 22:48:20 -040046 u8 addr4[ETH_ALEN];
47} __attribute__ ((packed));
48
49struct ieee80211_hdr_3addr {
Jiri Benc099c5bb2005-08-25 20:15:10 -040050 __le16 frame_ctl;
51 __le16 duration_id;
Jeff Garzikb4538722005-05-12 22:48:20 -040052 u8 addr1[ETH_ALEN];
53 u8 addr2[ETH_ALEN];
54 u8 addr3[ETH_ALEN];
Jiri Benc099c5bb2005-08-25 20:15:10 -040055 __le16 seq_ctl;
Jeff Garzikb4538722005-05-12 22:48:20 -040056} __attribute__ ((packed));
57
Jiri Benc286d9742005-05-24 15:10:18 +020058#define IEEE80211_1ADDR_LEN 10
59#define IEEE80211_2ADDR_LEN 16
Jeff Garzikb4538722005-05-12 22:48:20 -040060#define IEEE80211_3ADDR_LEN 24
61#define IEEE80211_4ADDR_LEN 30
62#define IEEE80211_FCS_LEN 4
63
64#define MIN_FRAG_THRESHOLD 256U
65#define MAX_FRAG_THRESHOLD 2346U
66
67/* Frame control field constants */
Jouni Malinenf241be72005-08-14 19:08:45 -070068#define IEEE80211_FCTL_VERS 0x0003
Jeff Garzikb4538722005-05-12 22:48:20 -040069#define IEEE80211_FCTL_FTYPE 0x000c
70#define IEEE80211_FCTL_STYPE 0x00f0
71#define IEEE80211_FCTL_TODS 0x0100
72#define IEEE80211_FCTL_FROMDS 0x0200
73#define IEEE80211_FCTL_MOREFRAGS 0x0400
74#define IEEE80211_FCTL_RETRY 0x0800
75#define IEEE80211_FCTL_PM 0x1000
Jiri Bencf13baae2005-08-25 20:11:46 -040076#define IEEE80211_FCTL_MOREDATA 0x2000
77#define IEEE80211_FCTL_PROTECTED 0x4000
Jeff Garzikb4538722005-05-12 22:48:20 -040078#define IEEE80211_FCTL_ORDER 0x8000
79
80#define IEEE80211_FTYPE_MGMT 0x0000
81#define IEEE80211_FTYPE_CTL 0x0004
82#define IEEE80211_FTYPE_DATA 0x0008
83
84/* management */
85#define IEEE80211_STYPE_ASSOC_REQ 0x0000
86#define IEEE80211_STYPE_ASSOC_RESP 0x0010
87#define IEEE80211_STYPE_REASSOC_REQ 0x0020
88#define IEEE80211_STYPE_REASSOC_RESP 0x0030
89#define IEEE80211_STYPE_PROBE_REQ 0x0040
90#define IEEE80211_STYPE_PROBE_RESP 0x0050
91#define IEEE80211_STYPE_BEACON 0x0080
92#define IEEE80211_STYPE_ATIM 0x0090
93#define IEEE80211_STYPE_DISASSOC 0x00A0
94#define IEEE80211_STYPE_AUTH 0x00B0
95#define IEEE80211_STYPE_DEAUTH 0x00C0
Jiri Bencf13baae2005-08-25 20:11:46 -040096#define IEEE80211_STYPE_ACTION 0x00D0
Jeff Garzikb4538722005-05-12 22:48:20 -040097
98/* control */
99#define IEEE80211_STYPE_PSPOLL 0x00A0
100#define IEEE80211_STYPE_RTS 0x00B0
101#define IEEE80211_STYPE_CTS 0x00C0
102#define IEEE80211_STYPE_ACK 0x00D0
103#define IEEE80211_STYPE_CFEND 0x00E0
104#define IEEE80211_STYPE_CFENDACK 0x00F0
105
106/* data */
107#define IEEE80211_STYPE_DATA 0x0000
108#define IEEE80211_STYPE_DATA_CFACK 0x0010
109#define IEEE80211_STYPE_DATA_CFPOLL 0x0020
110#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
111#define IEEE80211_STYPE_NULLFUNC 0x0040
112#define IEEE80211_STYPE_CFACK 0x0050
113#define IEEE80211_STYPE_CFPOLL 0x0060
114#define IEEE80211_STYPE_CFACKPOLL 0x0070
115
116#define IEEE80211_SCTL_FRAG 0x000F
117#define IEEE80211_SCTL_SEQ 0xFFF0
118
Jeff Garzikb4538722005-05-12 22:48:20 -0400119/* debug macros */
120
121#ifdef CONFIG_IEEE80211_DEBUG
122extern u32 ieee80211_debug_level;
123#define IEEE80211_DEBUG(level, fmt, args...) \
124do { if (ieee80211_debug_level & (level)) \
125 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
126 in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
127#else
128#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
James Ketrenos74079fd2005-09-13 17:35:21 -0500129#endif /* CONFIG_IEEE80211_DEBUG */
Jiri Bence88187e2005-08-25 20:00:53 -0400130
131/* debug macros not dependent on CONFIG_IEEE80211_DEBUG */
132
133#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
134#define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
135
136/* escape_essid() is intended to be used in debug (and possibly error)
137 * messages. It should never be used for passing essid to user space. */
138const char *escape_essid(const char *essid, u8 essid_len);
139
Jeff Garzikb4538722005-05-12 22:48:20 -0400140/*
Jiri Bence88187e2005-08-25 20:00:53 -0400141 * To use the debug system:
Jeff Garzikb4538722005-05-12 22:48:20 -0400142 *
143 * If you are defining a new debug classification, simply add it to the #define
144 * list here in the form of:
145 *
146 * #define IEEE80211_DL_xxxx VALUE
147 *
148 * shifting value to the left one bit from the previous entry. xxxx should be
149 * the name of the classification (for example, WEP)
150 *
151 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
152 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
153 * to send output to that classification.
154 *
155 * To add your debug level to the list of levels seen when you perform
156 *
Jouni Malinen91cb70c2005-08-28 10:51:34 -0700157 * % cat /proc/net/ieee80211/debug_level
Jeff Garzikb4538722005-05-12 22:48:20 -0400158 *
Jouni Malinen91cb70c2005-08-28 10:51:34 -0700159 * you simply need to add your entry to the ieee80211_debug_level array.
Jeff Garzikb4538722005-05-12 22:48:20 -0400160 *
Jouni Malinen91cb70c2005-08-28 10:51:34 -0700161 * If you do not see debug_level in /proc/net/ieee80211 then you do not have
Jeff Garzikb4538722005-05-12 22:48:20 -0400162 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
163 *
164 */
165
166#define IEEE80211_DL_INFO (1<<0)
167#define IEEE80211_DL_WX (1<<1)
168#define IEEE80211_DL_SCAN (1<<2)
169#define IEEE80211_DL_STATE (1<<3)
170#define IEEE80211_DL_MGMT (1<<4)
171#define IEEE80211_DL_FRAG (1<<5)
Jeff Garzikb4538722005-05-12 22:48:20 -0400172#define IEEE80211_DL_DROP (1<<7)
173
174#define IEEE80211_DL_TX (1<<8)
175#define IEEE80211_DL_RX (1<<9)
176
177#define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
178#define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
179#define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
180
181#define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
182#define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
183#define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
184#define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
185#define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
Jeff Garzikb4538722005-05-12 22:48:20 -0400186#define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
187#define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
188#define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
189#include <linux/netdevice.h>
190#include <linux/wireless.h>
James Ketrenos74079fd2005-09-13 17:35:21 -0500191#include <linux/if_arp.h> /* ARPHRD_ETHER */
Jeff Garzikb4538722005-05-12 22:48:20 -0400192
193#ifndef WIRELESS_SPY
Jiri Benc099c5bb2005-08-25 20:15:10 -0400194#define WIRELESS_SPY /* enable iwspy support */
Jeff Garzikb4538722005-05-12 22:48:20 -0400195#endif
Jiri Benc099c5bb2005-08-25 20:15:10 -0400196#include <net/iw_handler.h> /* new driver API */
Jeff Garzikb4538722005-05-12 22:48:20 -0400197
198#ifndef ETH_P_PAE
James Ketrenos74079fd2005-09-13 17:35:21 -0500199#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
200#endif /* ETH_P_PAE */
Jeff Garzikb4538722005-05-12 22:48:20 -0400201
James Ketrenos74079fd2005-09-13 17:35:21 -0500202#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
Jeff Garzikb4538722005-05-12 22:48:20 -0400203
204#ifndef ETH_P_80211_RAW
205#define ETH_P_80211_RAW (ETH_P_ECONET + 1)
206#endif
207
208/* IEEE 802.11 defines */
209
210#define P80211_OUI_LEN 3
211
212struct ieee80211_snap_hdr {
213
James Ketrenos74079fd2005-09-13 17:35:21 -0500214 u8 dsap; /* always 0xAA */
215 u8 ssap; /* always 0xAA */
216 u8 ctrl; /* always 0x03 */
217 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
Jeff Garzikb4538722005-05-12 22:48:20 -0400218
219} __attribute__ ((packed));
220
221#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
222
Jiri Bencf13baae2005-08-25 20:11:46 -0400223#define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
Jeff Garzikb4538722005-05-12 22:48:20 -0400224#define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
225#define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
226
227#define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
228#define WLAN_GET_SEQ_SEQ(seq) ((seq) & IEEE80211_SCTL_SEQ)
229
230/* Authentication algorithms */
231#define WLAN_AUTH_OPEN 0
232#define WLAN_AUTH_SHARED_KEY 1
233
234#define WLAN_AUTH_CHALLENGE_LEN 128
235
Jouni Malinen24743852005-08-14 20:59:59 -0700236#define WLAN_CAPABILITY_ESS (1<<0)
Jeff Garzikb4538722005-05-12 22:48:20 -0400237#define WLAN_CAPABILITY_IBSS (1<<1)
238#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
239#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
240#define WLAN_CAPABILITY_PRIVACY (1<<4)
241#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
242#define WLAN_CAPABILITY_PBCC (1<<6)
243#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
Jiri Bencf13baae2005-08-25 20:11:46 -0400244#define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
245#define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
246#define WLAN_CAPABILITY_OSSS_OFDM (1<<13)
Jeff Garzikb4538722005-05-12 22:48:20 -0400247
248/* Status codes */
Jiri Benc95d51852005-08-25 20:13:04 -0400249enum 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};
Jeff Garzikb4538722005-05-12 22:48:20 -0400281
282/* Reason codes */
Jiri Benc95d51852005-08-25 20:13:04 -0400283enum 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};
Jeff Garzikb4538722005-05-12 22:48:20 -0400310
Jeff Garzikb4538722005-05-12 22:48:20 -0400311#define IEEE80211_STATMASK_SIGNAL (1<<0)
312#define IEEE80211_STATMASK_RSSI (1<<1)
313#define IEEE80211_STATMASK_NOISE (1<<2)
314#define IEEE80211_STATMASK_RATE (1<<3)
315#define IEEE80211_STATMASK_WEMASK 0x7
316
Jeff Garzikb4538722005-05-12 22:48:20 -0400317#define IEEE80211_CCK_MODULATION (1<<0)
318#define IEEE80211_OFDM_MODULATION (1<<1)
319
320#define IEEE80211_24GHZ_BAND (1<<0)
321#define IEEE80211_52GHZ_BAND (1<<1)
322
323#define IEEE80211_CCK_RATE_1MB 0x02
324#define IEEE80211_CCK_RATE_2MB 0x04
325#define IEEE80211_CCK_RATE_5MB 0x0B
326#define IEEE80211_CCK_RATE_11MB 0x16
327#define IEEE80211_OFDM_RATE_6MB 0x0C
328#define IEEE80211_OFDM_RATE_9MB 0x12
329#define IEEE80211_OFDM_RATE_12MB 0x18
330#define IEEE80211_OFDM_RATE_18MB 0x24
331#define IEEE80211_OFDM_RATE_24MB 0x30
332#define IEEE80211_OFDM_RATE_36MB 0x48
333#define IEEE80211_OFDM_RATE_48MB 0x60
334#define IEEE80211_OFDM_RATE_54MB 0x6C
335#define IEEE80211_BASIC_RATE_MASK 0x80
336
337#define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
338#define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
339#define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
340#define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
341#define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
342#define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
343#define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
344#define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
345#define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
346#define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
347#define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
348#define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
349
350#define IEEE80211_CCK_RATES_MASK 0x0000000F
351#define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
352 IEEE80211_CCK_RATE_2MB_MASK)
353#define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
354 IEEE80211_CCK_RATE_5MB_MASK | \
355 IEEE80211_CCK_RATE_11MB_MASK)
356
357#define IEEE80211_OFDM_RATES_MASK 0x00000FF0
358#define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
359 IEEE80211_OFDM_RATE_12MB_MASK | \
360 IEEE80211_OFDM_RATE_24MB_MASK)
361#define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
362 IEEE80211_OFDM_RATE_9MB_MASK | \
363 IEEE80211_OFDM_RATE_18MB_MASK | \
364 IEEE80211_OFDM_RATE_36MB_MASK | \
365 IEEE80211_OFDM_RATE_48MB_MASK | \
366 IEEE80211_OFDM_RATE_54MB_MASK)
367#define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
368 IEEE80211_CCK_DEFAULT_RATES_MASK)
369
370#define IEEE80211_NUM_OFDM_RATES 8
371#define IEEE80211_NUM_CCK_RATES 4
372#define IEEE80211_OFDM_SHIFT_MASK_A 4
373
Jeff Garzikb4538722005-05-12 22:48:20 -0400374/* NOTE: This data is for statistical purposes; not all hardware provides this
375 * information for frames received. Not setting these will not cause
376 * any adverse affects. */
377struct ieee80211_rx_stats {
378 u32 mac_time;
379 s8 rssi;
380 u8 signal;
381 u8 noise;
James Ketrenos74079fd2005-09-13 17:35:21 -0500382 u16 rate; /* in 100 kbps */
Jeff Garzikb4538722005-05-12 22:48:20 -0400383 u8 received_channel;
384 u8 control;
385 u8 mask;
386 u8 freq;
387 u16 len;
388};
389
390/* IEEE 802.11 requires that STA supports concurrent reception of at least
391 * three fragmented frames. This define can be increased to support more
392 * concurrent frames, but it should be noted that each entry can consume about
393 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
394#define IEEE80211_FRAG_CACHE_LEN 4
395
396struct ieee80211_frag_entry {
397 unsigned long first_frag_time;
398 unsigned int seq;
399 unsigned int last_frag;
400 struct sk_buff *skb;
401 u8 src_addr[ETH_ALEN];
402 u8 dst_addr[ETH_ALEN];
403};
404
405struct ieee80211_stats {
406 unsigned int tx_unicast_frames;
407 unsigned int tx_multicast_frames;
408 unsigned int tx_fragments;
409 unsigned int tx_unicast_octets;
410 unsigned int tx_multicast_octets;
411 unsigned int tx_deferred_transmissions;
412 unsigned int tx_single_retry_frames;
413 unsigned int tx_multiple_retry_frames;
414 unsigned int tx_retry_limit_exceeded;
415 unsigned int tx_discards;
416 unsigned int rx_unicast_frames;
417 unsigned int rx_multicast_frames;
418 unsigned int rx_fragments;
419 unsigned int rx_unicast_octets;
420 unsigned int rx_multicast_octets;
421 unsigned int rx_fcs_errors;
422 unsigned int rx_discards_no_buffer;
423 unsigned int tx_discards_wrong_sa;
424 unsigned int rx_discards_undecryptable;
425 unsigned int rx_message_in_msg_fragments;
426 unsigned int rx_message_in_bad_msg_fragments;
427};
428
429struct ieee80211_device;
430
431#include "ieee80211_crypt.h"
432
James Ketrenosf1bf6632005-09-21 11:53:54 -0500433#define SEC_KEY_1 (1<<0)
434#define SEC_KEY_2 (1<<1)
435#define SEC_KEY_3 (1<<2)
436#define SEC_KEY_4 (1<<3)
437#define SEC_ACTIVE_KEY (1<<4)
438#define SEC_AUTH_MODE (1<<5)
439#define SEC_UNICAST_GROUP (1<<6)
440#define SEC_LEVEL (1<<7)
441#define SEC_ENABLED (1<<8)
James Ketrenos259bf1f2005-09-21 11:54:22 -0500442#define SEC_ENCRYPT (1<<9)
Jeff Garzikb4538722005-05-12 22:48:20 -0400443
James Ketrenosf1bf6632005-09-21 11:53:54 -0500444#define SEC_LEVEL_0 0 /* None */
445#define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
446#define SEC_LEVEL_2 2 /* Level 1 + TKIP */
447#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
448#define SEC_LEVEL_3 4 /* Level 2 + CCMP */
Jeff Garzikb4538722005-05-12 22:48:20 -0400449
James Ketrenosf1bf6632005-09-21 11:53:54 -0500450#define WEP_KEYS 4
451#define WEP_KEY_LEN 13
452#define SCM_KEY_LEN 32
453#define SCM_TEMPORAL_KEY_LENGTH 16
Jeff Garzikb4538722005-05-12 22:48:20 -0400454
455struct ieee80211_security {
456 u16 active_key:2,
James Ketrenosf1bf6632005-09-21 11:53:54 -0500457 enabled:1,
458 auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
Jeff Garzikb4538722005-05-12 22:48:20 -0400459 u8 key_sizes[WEP_KEYS];
James Ketrenosf1bf6632005-09-21 11:53:54 -0500460 u8 keys[WEP_KEYS][SCM_KEY_LEN];
Jeff Garzikb4538722005-05-12 22:48:20 -0400461 u8 level;
462 u16 flags;
463} __attribute__ ((packed));
464
Jeff Garzikb4538722005-05-12 22:48:20 -0400465/*
466
467 802.11 data frame from AP
468
469 ,-------------------------------------------------------------------.
470Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
471 |------|------|---------|---------|---------|------|---------|------|
472Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
473 | | tion | (BSSID) | | | ence | data | |
474 `-------------------------------------------------------------------'
475
476Total: 28-2340 bytes
477
478*/
479
Jeff Garzikb4538722005-05-12 22:48:20 -0400480#define BEACON_PROBE_SSID_ID_POSITION 12
481
482/* Management Frame Information Element Types */
Jiri Benc95d51852005-08-25 20:13:04 -0400483enum ieee80211_mfie {
484 MFIE_TYPE_SSID = 0,
485 MFIE_TYPE_RATES = 1,
486 MFIE_TYPE_FH_SET = 2,
487 MFIE_TYPE_DS_SET = 3,
James Ketrenos74079fd2005-09-13 17:35:21 -0500488 MFIE_TYPE_CF_SET = 4,
Jiri Benc95d51852005-08-25 20:13:04 -0400489 MFIE_TYPE_TIM = 5,
490 MFIE_TYPE_IBSS_SET = 6,
491 MFIE_TYPE_COUNTRY = 7,
492 MFIE_TYPE_HOP_PARAMS = 8,
493 MFIE_TYPE_HOP_TABLE = 9,
494 MFIE_TYPE_REQUEST = 10,
495 MFIE_TYPE_CHALLENGE = 16,
496 MFIE_TYPE_POWER_CONSTRAINT = 32,
497 MFIE_TYPE_POWER_CAPABILITY = 33,
498 MFIE_TYPE_TPC_REQUEST = 34,
499 MFIE_TYPE_TPC_REPORT = 35,
500 MFIE_TYPE_SUPP_CHANNELS = 36,
501 MFIE_TYPE_CSA = 37,
502 MFIE_TYPE_MEASURE_REQUEST = 38,
503 MFIE_TYPE_MEASURE_REPORT = 39,
504 MFIE_TYPE_QUIET = 40,
505 MFIE_TYPE_IBSS_DFS = 41,
506 MFIE_TYPE_ERP_INFO = 42,
507 MFIE_TYPE_RSN = 48,
508 MFIE_TYPE_RATES_EX = 50,
509 MFIE_TYPE_GENERIC = 221,
510};
Jeff Garzikb4538722005-05-12 22:48:20 -0400511
Jeff Garzikb4538722005-05-12 22:48:20 -0400512struct ieee80211_info_element {
513 u8 id;
514 u8 len;
515 u8 data[0];
516} __attribute__ ((packed));
517
518/*
519 * These are the data types that can make up management packets
520 *
521 u16 auth_algorithm;
522 u16 auth_sequence;
523 u16 beacon_interval;
524 u16 capability;
525 u8 current_ap[ETH_ALEN];
526 u16 listen_interval;
527 struct {
528 u16 association_id:14, reserved:2;
529 } __attribute__ ((packed));
530 u32 time_stamp[2];
531 u16 reason;
532 u16 status;
533*/
534
535struct ieee80211_authentication {
Jiri Benc286d9742005-05-24 15:10:18 +0200536 struct ieee80211_hdr_3addr header;
Jiri Benc099c5bb2005-08-25 20:15:10 -0400537 __le16 algorithm;
538 __le16 transaction;
539 __le16 status;
James Ketrenos68e4e032005-09-13 17:37:22 -0500540 struct ieee80211_info_element info_element[0];
Jeff Garzikb4538722005-05-12 22:48:20 -0400541} __attribute__ ((packed));
542
Jeff Garzikb4538722005-05-12 22:48:20 -0400543struct ieee80211_probe_response {
Jiri Benc286d9742005-05-24 15:10:18 +0200544 struct ieee80211_hdr_3addr header;
Jeff Garzikb4538722005-05-12 22:48:20 -0400545 u32 time_stamp[2];
Jiri Benc099c5bb2005-08-25 20:15:10 -0400546 __le16 beacon_interval;
547 __le16 capability;
James Ketrenos68e4e032005-09-13 17:37:22 -0500548 struct ieee80211_info_element info_element[0];
Jeff Garzikb4538722005-05-12 22:48:20 -0400549} __attribute__ ((packed));
550
551struct ieee80211_assoc_request_frame {
Jiri Benc099c5bb2005-08-25 20:15:10 -0400552 __le16 capability;
553 __le16 listen_interval;
Jeff Garzikb4538722005-05-12 22:48:20 -0400554 u8 current_ap[ETH_ALEN];
James Ketrenos68e4e032005-09-13 17:37:22 -0500555 struct ieee80211_info_element info_element[0];
Jeff Garzikb4538722005-05-12 22:48:20 -0400556} __attribute__ ((packed));
557
558struct ieee80211_assoc_response_frame {
559 struct ieee80211_hdr_3addr header;
Jiri Benc099c5bb2005-08-25 20:15:10 -0400560 __le16 capability;
561 __le16 status;
562 __le16 aid;
James Ketrenos68e4e032005-09-13 17:37:22 -0500563 struct ieee80211_info_element info_element[0]; /* supported rates */
Jeff Garzikb4538722005-05-12 22:48:20 -0400564} __attribute__ ((packed));
565
Jeff Garzikb4538722005-05-12 22:48:20 -0400566struct ieee80211_txb {
567 u8 nr_frags;
568 u8 encrypted;
569 u16 reserved;
570 u16 frag_size;
571 u16 payload_size;
572 struct sk_buff *fragments[0];
573};
574
Jiri Benc099c5bb2005-08-25 20:15:10 -0400575/* SWEEP TABLE ENTRIES NUMBER */
Jeff Garzikb4538722005-05-12 22:48:20 -0400576#define MAX_SWEEP_TAB_ENTRIES 42
577#define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
578/* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
579 * only use 8, and then use extended rates for the remaining supported
580 * rates. Other APs, however, stick all of their supported rates on the
581 * main rates information element... */
582#define MAX_RATES_LENGTH ((u8)12)
583#define MAX_RATES_EX_LENGTH ((u8)16)
584#define MAX_NETWORK_COUNT 128
585
586#define CRC_LENGTH 4U
587
588#define MAX_WPA_IE_LEN 64
589
590#define NETWORK_EMPTY_ESSID (1<<0)
591#define NETWORK_HAS_OFDM (1<<1)
592#define NETWORK_HAS_CCK (1<<2)
593
594struct ieee80211_network {
595 /* These entries are used to identify a unique network */
596 u8 bssid[ETH_ALEN];
597 u8 channel;
598 /* Ensure null-terminated for any debug msgs */
599 u8 ssid[IW_ESSID_MAX_SIZE + 1];
600 u8 ssid_len;
601
602 /* These are network statistics */
603 struct ieee80211_rx_stats stats;
604 u16 capability;
605 u8 rates[MAX_RATES_LENGTH];
606 u8 rates_len;
607 u8 rates_ex[MAX_RATES_EX_LENGTH];
608 u8 rates_ex_len;
609 unsigned long last_scanned;
610 u8 mode;
611 u8 flags;
612 u32 last_associate;
613 u32 time_stamp[2];
614 u16 beacon_interval;
615 u16 listen_interval;
616 u16 atim_window;
617 u8 wpa_ie[MAX_WPA_IE_LEN];
618 size_t wpa_ie_len;
619 u8 rsn_ie[MAX_WPA_IE_LEN];
620 size_t rsn_ie_len;
621 struct list_head list;
622};
623
624enum ieee80211_state {
625 IEEE80211_UNINITIALIZED = 0,
626 IEEE80211_INITIALIZED,
627 IEEE80211_ASSOCIATING,
628 IEEE80211_ASSOCIATED,
629 IEEE80211_AUTHENTICATING,
630 IEEE80211_AUTHENTICATED,
631 IEEE80211_SHUTDOWN
632};
633
634#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
635#define DEFAULT_FTS 2346
Jeff Garzikb4538722005-05-12 22:48:20 -0400636
Jeff Garzikb4538722005-05-12 22:48:20 -0400637#define CFG_IEEE80211_RESERVE_FCS (1<<0)
638#define CFG_IEEE80211_COMPUTE_FCS (1<<1)
639
640struct ieee80211_device {
641 struct net_device *dev;
James Ketrenosf1bf6632005-09-21 11:53:54 -0500642 struct ieee80211_security sec;
Jeff Garzikb4538722005-05-12 22:48:20 -0400643
644 /* Bookkeeping structures */
645 struct net_device_stats stats;
646 struct ieee80211_stats ieee_stats;
647
648 /* Probe / Beacon management */
649 struct list_head network_free_list;
650 struct list_head network_list;
651 struct ieee80211_network *networks;
652 int scans;
653 int scan_age;
654
James Ketrenos74079fd2005-09-13 17:35:21 -0500655 int iw_mode; /* operating mode (IW_MODE_*) */
656 struct iw_spy_data spy_data; /* iwspy support */
Jeff Garzikb4538722005-05-12 22:48:20 -0400657
658 spinlock_t lock;
659
James Ketrenos74079fd2005-09-13 17:35:21 -0500660 int tx_headroom; /* Set to size of any additional room needed at front
661 * of allocated Tx SKBs */
Jeff Garzikb4538722005-05-12 22:48:20 -0400662 u32 config;
663
664 /* WEP and other encryption related settings at the device level */
James Ketrenos74079fd2005-09-13 17:35:21 -0500665 int open_wep; /* Set to 1 to allow unencrypted frames */
Jeff Garzikb4538722005-05-12 22:48:20 -0400666
James Ketrenos74079fd2005-09-13 17:35:21 -0500667 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
Jeff Garzikb4538722005-05-12 22:48:20 -0400668 * WEP key changes */
669
670 /* If the host performs {en,de}cryption, then set to 1 */
671 int host_encrypt;
672 int host_decrypt;
James Ketrenos74079fd2005-09-13 17:35:21 -0500673 int ieee802_1x; /* is IEEE 802.1X used */
Jeff Garzikb4538722005-05-12 22:48:20 -0400674
675 /* WPA data */
676 int wpa_enabled;
677 int drop_unencrypted;
678 int tkip_countermeasures;
679 int privacy_invoked;
680 size_t wpa_ie_len;
681 u8 *wpa_ie;
682
683 struct list_head crypt_deinit_list;
684 struct ieee80211_crypt_data *crypt[WEP_KEYS];
James Ketrenos74079fd2005-09-13 17:35:21 -0500685 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
Jeff Garzikb4538722005-05-12 22:48:20 -0400686 struct timer_list crypt_deinit_timer;
James Ketrenos0ad0c3c2005-09-21 11:54:15 -0500687 int crypt_quiesced;
Jeff Garzikb4538722005-05-12 22:48:20 -0400688
James Ketrenos74079fd2005-09-13 17:35:21 -0500689 int bcrx_sta_key; /* use individual keys to override default keys even
690 * with RX of broad/multicast frames */
Jeff Garzikb4538722005-05-12 22:48:20 -0400691
692 /* Fragmentation structures */
693 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
694 unsigned int frag_next_idx;
James Ketrenos74079fd2005-09-13 17:35:21 -0500695 u16 fts; /* Fragmentation Threshold */
Jeff Garzikb4538722005-05-12 22:48:20 -0400696
697 /* Association info */
698 u8 bssid[ETH_ALEN];
699
700 enum ieee80211_state state;
701
James Ketrenos74079fd2005-09-13 17:35:21 -0500702 int mode; /* A, B, G */
703 int modulation; /* CCK, OFDM */
704 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
James Ketrenos3bc5ed62005-09-13 17:48:54 -0500705 int abg_true; /* ABG flag */
Jeff Garzikb4538722005-05-12 22:48:20 -0400706
James Ketrenosb1b508e2005-09-13 17:27:19 -0500707 int perfect_rssi;
708 int worst_rssi;
709
Jeff Garzikb4538722005-05-12 22:48:20 -0400710 /* Callback functions */
James Ketrenos74079fd2005-09-13 17:35:21 -0500711 void (*set_security) (struct net_device * dev,
712 struct ieee80211_security * sec);
713 int (*hard_start_xmit) (struct ieee80211_txb * txb,
714 struct net_device * dev);
715 int (*reset_port) (struct net_device * dev);
Jeff Garzikb4538722005-05-12 22:48:20 -0400716
717 /* This must be the last item so that it points to the data
718 * allocated beyond this structure by alloc_ieee80211 */
719 u8 priv[0];
720};
721
722#define IEEE_A (1<<0)
723#define IEEE_B (1<<1)
724#define IEEE_G (1<<2)
725#define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
726
727extern inline void *ieee80211_priv(struct net_device *dev)
728{
729 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
730}
731
732extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
733{
734 /* Single white space is for Linksys APs */
735 if (essid_len == 1 && essid[0] == ' ')
736 return 1;
737
738 /* Otherwise, if the entire essid is 0, we assume it is hidden */
739 while (essid_len) {
740 essid_len--;
741 if (essid[essid_len] != '\0')
742 return 0;
743 }
744
745 return 1;
746}
747
James Ketrenos74079fd2005-09-13 17:35:21 -0500748extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
749 int mode)
Jeff Garzikb4538722005-05-12 22:48:20 -0400750{
751 /*
752 * It is possible for both access points and our device to support
753 * combinations of modes, so as long as there is one valid combination
754 * of ap/device supported modes, then return success
755 *
756 */
757 if ((mode & IEEE_A) &&
758 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
759 (ieee->freq_band & IEEE80211_52GHZ_BAND))
760 return 1;
761
762 if ((mode & IEEE_G) &&
763 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
764 (ieee->freq_band & IEEE80211_24GHZ_BAND))
765 return 1;
766
767 if ((mode & IEEE_B) &&
768 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
769 (ieee->freq_band & IEEE80211_24GHZ_BAND))
770 return 1;
771
772 return 0;
773}
774
775extern inline int ieee80211_get_hdrlen(u16 fc)
776{
Jiri Benc286d9742005-05-24 15:10:18 +0200777 int hdrlen = IEEE80211_3ADDR_LEN;
Jeff Garzikb4538722005-05-12 22:48:20 -0400778
779 switch (WLAN_FC_GET_TYPE(fc)) {
780 case IEEE80211_FTYPE_DATA:
781 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
Jiri Benc286d9742005-05-24 15:10:18 +0200782 hdrlen = IEEE80211_4ADDR_LEN;
Jeff Garzikb4538722005-05-12 22:48:20 -0400783 break;
784 case IEEE80211_FTYPE_CTL:
785 switch (WLAN_FC_GET_STYPE(fc)) {
786 case IEEE80211_STYPE_CTS:
787 case IEEE80211_STYPE_ACK:
Jiri Benc286d9742005-05-24 15:10:18 +0200788 hdrlen = IEEE80211_1ADDR_LEN;
Jeff Garzikb4538722005-05-12 22:48:20 -0400789 break;
790 default:
Jiri Benc286d9742005-05-24 15:10:18 +0200791 hdrlen = IEEE80211_2ADDR_LEN;
Jeff Garzikb4538722005-05-12 22:48:20 -0400792 break;
793 }
794 break;
795 }
796
797 return hdrlen;
798}
799
Jeff Garzikb4538722005-05-12 22:48:20 -0400800/* ieee80211.c */
801extern void free_ieee80211(struct net_device *dev);
802extern struct net_device *alloc_ieee80211(int sizeof_priv);
803
804extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
805
806/* ieee80211_tx.c */
James Ketrenos74079fd2005-09-13 17:35:21 -0500807extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
Jeff Garzikb4538722005-05-12 22:48:20 -0400808extern void ieee80211_txb_free(struct ieee80211_txb *);
809
Jeff Garzikb4538722005-05-12 22:48:20 -0400810/* ieee80211_rx.c */
811extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
812 struct ieee80211_rx_stats *rx_stats);
813extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
814 struct ieee80211_hdr *header,
815 struct ieee80211_rx_stats *stats);
816
Jiri Benc099c5bb2005-08-25 20:15:10 -0400817/* ieee80211_wx.c */
Jeff Garzikb4538722005-05-12 22:48:20 -0400818extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
819 struct iw_request_info *info,
820 union iwreq_data *wrqu, char *key);
821extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
822 struct iw_request_info *info,
823 union iwreq_data *wrqu, char *key);
824extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
825 struct iw_request_info *info,
826 union iwreq_data *wrqu, char *key);
827
Jeff Garzikb4538722005-05-12 22:48:20 -0400828extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
829{
830 ieee->scans++;
831}
832
833extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
834{
835 return ieee->scans;
836}
837
James Ketrenos74079fd2005-09-13 17:35:21 -0500838#endif /* IEEE80211_H */