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diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h
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1/*
2 * Merged with mainline ieee80211.h in Aug 2004. Original ieee802_11
3 * remains copyright by the original authors
4 *
5 * Portions of the merged code are based on Host AP (software wireless
6 * LAN access point) driver for Intersil Prism2/2.5/3.
7 *
8 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
9 * <jkmaline@cc.hut.fi>
10 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
11 *
12 * Adaption to a generic IEEE 802.11 stack by James Ketrenos
13 * <jketreno@linux.intel.com>
14 * Copyright (c) 2004, 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
23
24#include <linux/if_ether.h> /* ETH_ALEN */
25#include <linux/kernel.h> /* ARRAY_SIZE */
26
27#if WIRELESS_EXT < 17
28#define IW_QUAL_QUAL_INVALID 0x10
29#define IW_QUAL_LEVEL_INVALID 0x20
30#define IW_QUAL_NOISE_INVALID 0x40
31#define IW_QUAL_QUAL_UPDATED 0x1
32#define IW_QUAL_LEVEL_UPDATED 0x2
33#define IW_QUAL_NOISE_UPDATED 0x4
34#endif
35
36#define IEEE80211_DATA_LEN 2304
37/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
38 6.2.1.1.2.
39
40 The figure in section 7.1.2 suggests a body size of up to 2312
41 bytes is allowed, which is a bit confusing, I suspect this
42 represents the 2304 bytes of real data, plus a possible 8 bytes of
43 WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
44
45
46#define IEEE80211_HLEN 30
47#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
48
49struct ieee80211_hdr {
50 u16 frame_ctl;
51 u16 duration_id;
52 u8 addr1[ETH_ALEN];
53 u8 addr2[ETH_ALEN];
54 u8 addr3[ETH_ALEN];
55 u16 seq_ctl;
56 u8 addr4[ETH_ALEN];
57} __attribute__ ((packed));
58
59struct ieee80211_hdr_3addr {
60 u16 frame_ctl;
61 u16 duration_id;
62 u8 addr1[ETH_ALEN];
63 u8 addr2[ETH_ALEN];
64 u8 addr3[ETH_ALEN];
65 u16 seq_ctl;
66} __attribute__ ((packed));
67
68enum eap_type {
69 EAP_PACKET = 0,
70 EAPOL_START,
71 EAPOL_LOGOFF,
72 EAPOL_KEY,
73 EAPOL_ENCAP_ASF_ALERT
74};
75
76static const char *eap_types[] = {
77 [EAP_PACKET] = "EAP-Packet",
78 [EAPOL_START] = "EAPOL-Start",
79 [EAPOL_LOGOFF] = "EAPOL-Logoff",
80 [EAPOL_KEY] = "EAPOL-Key",
81 [EAPOL_ENCAP_ASF_ALERT] = "EAPOL-Encap-ASF-Alert"
82};
83
84static inline const char *eap_get_type(int type)
85{
86 return (type >= ARRAY_SIZE(eap_types)) ? "Unknown" : eap_types[type];
87}
88
89struct eapol {
90 u8 snap[6];
91 u16 ethertype;
92 u8 version;
93 u8 type;
94 u16 length;
95} __attribute__ ((packed));
96
97#define IEEE80211_3ADDR_LEN 24
98#define IEEE80211_4ADDR_LEN 30
99#define IEEE80211_FCS_LEN 4
100
101#define MIN_FRAG_THRESHOLD 256U
102#define MAX_FRAG_THRESHOLD 2346U
103
104/* Frame control field constants */
105#define IEEE80211_FCTL_VERS 0x0002
106#define IEEE80211_FCTL_FTYPE 0x000c
107#define IEEE80211_FCTL_STYPE 0x00f0
108#define IEEE80211_FCTL_TODS 0x0100
109#define IEEE80211_FCTL_FROMDS 0x0200
110#define IEEE80211_FCTL_MOREFRAGS 0x0400
111#define IEEE80211_FCTL_RETRY 0x0800
112#define IEEE80211_FCTL_PM 0x1000
113#define IEEE80211_FCTL_MOREDATA 0x2000
114#define IEEE80211_FCTL_WEP 0x4000
115#define IEEE80211_FCTL_ORDER 0x8000
116
117#define IEEE80211_FTYPE_MGMT 0x0000
118#define IEEE80211_FTYPE_CTL 0x0004
119#define IEEE80211_FTYPE_DATA 0x0008
120
121/* management */
122#define IEEE80211_STYPE_ASSOC_REQ 0x0000
123#define IEEE80211_STYPE_ASSOC_RESP 0x0010
124#define IEEE80211_STYPE_REASSOC_REQ 0x0020
125#define IEEE80211_STYPE_REASSOC_RESP 0x0030
126#define IEEE80211_STYPE_PROBE_REQ 0x0040
127#define IEEE80211_STYPE_PROBE_RESP 0x0050
128#define IEEE80211_STYPE_BEACON 0x0080
129#define IEEE80211_STYPE_ATIM 0x0090
130#define IEEE80211_STYPE_DISASSOC 0x00A0
131#define IEEE80211_STYPE_AUTH 0x00B0
132#define IEEE80211_STYPE_DEAUTH 0x00C0
133
134/* control */
135#define IEEE80211_STYPE_PSPOLL 0x00A0
136#define IEEE80211_STYPE_RTS 0x00B0
137#define IEEE80211_STYPE_CTS 0x00C0
138#define IEEE80211_STYPE_ACK 0x00D0
139#define IEEE80211_STYPE_CFEND 0x00E0
140#define IEEE80211_STYPE_CFENDACK 0x00F0
141
142/* data */
143#define IEEE80211_STYPE_DATA 0x0000
144#define IEEE80211_STYPE_DATA_CFACK 0x0010
145#define IEEE80211_STYPE_DATA_CFPOLL 0x0020
146#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
147#define IEEE80211_STYPE_NULLFUNC 0x0040
148#define IEEE80211_STYPE_CFACK 0x0050
149#define IEEE80211_STYPE_CFPOLL 0x0060
150#define IEEE80211_STYPE_CFACKPOLL 0x0070
151
152#define IEEE80211_SCTL_FRAG 0x000F
153#define IEEE80211_SCTL_SEQ 0xFFF0
154
155
156/* debug macros */
157
158#ifdef CONFIG_IEEE80211_DEBUG
159extern u32 ieee80211_debug_level;
160#define IEEE80211_DEBUG(level, fmt, args...) \
161do { if (ieee80211_debug_level & (level)) \
162 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
163 in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
164#else
165#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
166#endif /* CONFIG_IEEE80211_DEBUG */
167
168/*
169 * To use the debug system;
170 *
171 * If you are defining a new debug classification, simply add it to the #define
172 * list here in the form of:
173 *
174 * #define IEEE80211_DL_xxxx VALUE
175 *
176 * shifting value to the left one bit from the previous entry. xxxx should be
177 * the name of the classification (for example, WEP)
178 *
179 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
180 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
181 * to send output to that classification.
182 *
183 * To add your debug level to the list of levels seen when you perform
184 *
185 * % cat /proc/net/ipw/debug_level
186 *
187 * you simply need to add your entry to the ipw_debug_levels array.
188 *
189 * If you do not see debug_level in /proc/net/ipw then you do not have
190 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
191 *
192 */
193
194#define IEEE80211_DL_INFO (1<<0)
195#define IEEE80211_DL_WX (1<<1)
196#define IEEE80211_DL_SCAN (1<<2)
197#define IEEE80211_DL_STATE (1<<3)
198#define IEEE80211_DL_MGMT (1<<4)
199#define IEEE80211_DL_FRAG (1<<5)
200#define IEEE80211_DL_EAP (1<<6)
201#define IEEE80211_DL_DROP (1<<7)
202
203#define IEEE80211_DL_TX (1<<8)
204#define IEEE80211_DL_RX (1<<9)
205
206#define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
207#define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
208#define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
209
210#define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
211#define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
212#define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
213#define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
214#define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
215#define IEEE80211_DEBUG_EAP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_EAP, f, ## a)
216#define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
217#define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
218#define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
219#include <linux/netdevice.h>
220#include <linux/wireless.h>
221#include <linux/if_arp.h> /* ARPHRD_ETHER */
222
223#ifndef WIRELESS_SPY
224#define WIRELESS_SPY // enable iwspy support
225#endif
226#include <net/iw_handler.h> // new driver API
227
228#ifndef ETH_P_PAE
229#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
230#endif /* ETH_P_PAE */
231
232#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
233
234#ifndef ETH_P_80211_RAW
235#define ETH_P_80211_RAW (ETH_P_ECONET + 1)
236#endif
237
238/* IEEE 802.11 defines */
239
240#define P80211_OUI_LEN 3
241
242struct ieee80211_snap_hdr {
243
244 u8 dsap; /* always 0xAA */
245 u8 ssap; /* always 0xAA */
246 u8 ctrl; /* always 0x03 */
247 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
248
249} __attribute__ ((packed));
250
251#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
252
253#define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
254#define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
255
256#define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
257#define WLAN_GET_SEQ_SEQ(seq) ((seq) & IEEE80211_SCTL_SEQ)
258
259/* Authentication algorithms */
260#define WLAN_AUTH_OPEN 0
261#define WLAN_AUTH_SHARED_KEY 1
262
263#define WLAN_AUTH_CHALLENGE_LEN 128
264
265#define WLAN_CAPABILITY_BSS (1<<0)
266#define WLAN_CAPABILITY_IBSS (1<<1)
267#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
268#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
269#define WLAN_CAPABILITY_PRIVACY (1<<4)
270#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
271#define WLAN_CAPABILITY_PBCC (1<<6)
272#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
273
274/* Status codes */
275#define WLAN_STATUS_SUCCESS 0
276#define WLAN_STATUS_UNSPECIFIED_FAILURE 1
277#define WLAN_STATUS_CAPS_UNSUPPORTED 10
278#define WLAN_STATUS_REASSOC_NO_ASSOC 11
279#define WLAN_STATUS_ASSOC_DENIED_UNSPEC 12
280#define WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG 13
281#define WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION 14
282#define WLAN_STATUS_CHALLENGE_FAIL 15
283#define WLAN_STATUS_AUTH_TIMEOUT 16
284#define WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA 17
285#define WLAN_STATUS_ASSOC_DENIED_RATES 18
286/* 802.11b */
287#define WLAN_STATUS_ASSOC_DENIED_NOSHORT 19
288#define WLAN_STATUS_ASSOC_DENIED_NOPBCC 20
289#define WLAN_STATUS_ASSOC_DENIED_NOAGILITY 21
290
291/* Reason codes */
292#define WLAN_REASON_UNSPECIFIED 1
293#define WLAN_REASON_PREV_AUTH_NOT_VALID 2
294#define WLAN_REASON_DEAUTH_LEAVING 3
295#define WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY 4
296#define WLAN_REASON_DISASSOC_AP_BUSY 5
297#define WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA 6
298#define WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA 7
299#define WLAN_REASON_DISASSOC_STA_HAS_LEFT 8
300#define WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH 9
301
302
303/* Information Element IDs */
304#define WLAN_EID_SSID 0
305#define WLAN_EID_SUPP_RATES 1
306#define WLAN_EID_FH_PARAMS 2
307#define WLAN_EID_DS_PARAMS 3
308#define WLAN_EID_CF_PARAMS 4
309#define WLAN_EID_TIM 5
310#define WLAN_EID_IBSS_PARAMS 6
311#define WLAN_EID_CHALLENGE 16
312#define WLAN_EID_RSN 48
313#define WLAN_EID_GENERIC 221
314
315#define IEEE80211_MGMT_HDR_LEN 24
316#define IEEE80211_DATA_HDR3_LEN 24
317#define IEEE80211_DATA_HDR4_LEN 30
318
319
320#define IEEE80211_STATMASK_SIGNAL (1<<0)
321#define IEEE80211_STATMASK_RSSI (1<<1)
322#define IEEE80211_STATMASK_NOISE (1<<2)
323#define IEEE80211_STATMASK_RATE (1<<3)
324#define IEEE80211_STATMASK_WEMASK 0x7
325
326
327#define IEEE80211_CCK_MODULATION (1<<0)
328#define IEEE80211_OFDM_MODULATION (1<<1)
329
330#define IEEE80211_24GHZ_BAND (1<<0)
331#define IEEE80211_52GHZ_BAND (1<<1)
332
333#define IEEE80211_CCK_RATE_1MB 0x02
334#define IEEE80211_CCK_RATE_2MB 0x04
335#define IEEE80211_CCK_RATE_5MB 0x0B
336#define IEEE80211_CCK_RATE_11MB 0x16
337#define IEEE80211_OFDM_RATE_6MB 0x0C
338#define IEEE80211_OFDM_RATE_9MB 0x12
339#define IEEE80211_OFDM_RATE_12MB 0x18
340#define IEEE80211_OFDM_RATE_18MB 0x24
341#define IEEE80211_OFDM_RATE_24MB 0x30
342#define IEEE80211_OFDM_RATE_36MB 0x48
343#define IEEE80211_OFDM_RATE_48MB 0x60
344#define IEEE80211_OFDM_RATE_54MB 0x6C
345#define IEEE80211_BASIC_RATE_MASK 0x80
346
347#define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
348#define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
349#define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
350#define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
351#define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
352#define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
353#define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
354#define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
355#define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
356#define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
357#define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
358#define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
359
360#define IEEE80211_CCK_RATES_MASK 0x0000000F
361#define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
362 IEEE80211_CCK_RATE_2MB_MASK)
363#define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
364 IEEE80211_CCK_RATE_5MB_MASK | \
365 IEEE80211_CCK_RATE_11MB_MASK)
366
367#define IEEE80211_OFDM_RATES_MASK 0x00000FF0
368#define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
369 IEEE80211_OFDM_RATE_12MB_MASK | \
370 IEEE80211_OFDM_RATE_24MB_MASK)
371#define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
372 IEEE80211_OFDM_RATE_9MB_MASK | \
373 IEEE80211_OFDM_RATE_18MB_MASK | \
374 IEEE80211_OFDM_RATE_36MB_MASK | \
375 IEEE80211_OFDM_RATE_48MB_MASK | \
376 IEEE80211_OFDM_RATE_54MB_MASK)
377#define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
378 IEEE80211_CCK_DEFAULT_RATES_MASK)
379
380#define IEEE80211_NUM_OFDM_RATES 8
381#define IEEE80211_NUM_CCK_RATES 4
382#define IEEE80211_OFDM_SHIFT_MASK_A 4
383
384
385
386
387/* NOTE: This data is for statistical purposes; not all hardware provides this
388 * information for frames received. Not setting these will not cause
389 * any adverse affects. */
390struct ieee80211_rx_stats {
391 u32 mac_time;
392 s8 rssi;
393 u8 signal;
394 u8 noise;
395 u16 rate; /* in 100 kbps */
396 u8 received_channel;
397 u8 control;
398 u8 mask;
399 u8 freq;
400 u16 len;
401};
402
403/* IEEE 802.11 requires that STA supports concurrent reception of at least
404 * three fragmented frames. This define can be increased to support more
405 * concurrent frames, but it should be noted that each entry can consume about
406 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
407#define IEEE80211_FRAG_CACHE_LEN 4
408
409struct ieee80211_frag_entry {
410 unsigned long first_frag_time;
411 unsigned int seq;
412 unsigned int last_frag;
413 struct sk_buff *skb;
414 u8 src_addr[ETH_ALEN];
415 u8 dst_addr[ETH_ALEN];
416};
417
418struct ieee80211_stats {
419 unsigned int tx_unicast_frames;
420 unsigned int tx_multicast_frames;
421 unsigned int tx_fragments;
422 unsigned int tx_unicast_octets;
423 unsigned int tx_multicast_octets;
424 unsigned int tx_deferred_transmissions;
425 unsigned int tx_single_retry_frames;
426 unsigned int tx_multiple_retry_frames;
427 unsigned int tx_retry_limit_exceeded;
428 unsigned int tx_discards;
429 unsigned int rx_unicast_frames;
430 unsigned int rx_multicast_frames;
431 unsigned int rx_fragments;
432 unsigned int rx_unicast_octets;
433 unsigned int rx_multicast_octets;
434 unsigned int rx_fcs_errors;
435 unsigned int rx_discards_no_buffer;
436 unsigned int tx_discards_wrong_sa;
437 unsigned int rx_discards_undecryptable;
438 unsigned int rx_message_in_msg_fragments;
439 unsigned int rx_message_in_bad_msg_fragments;
440};
441
442struct ieee80211_device;
443
444#define SEC_KEY_1 (1<<0)
445#define SEC_KEY_2 (1<<1)
446#define SEC_KEY_3 (1<<2)
447#define SEC_KEY_4 (1<<3)
448#define SEC_ACTIVE_KEY (1<<4)
449#define SEC_AUTH_MODE (1<<5)
450#define SEC_UNICAST_GROUP (1<<6)
451#define SEC_LEVEL (1<<7)
452#define SEC_ENABLED (1<<8)
453
454#define SEC_LEVEL_0 0 /* None */
455#define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
456#define SEC_LEVEL_2 2 /* Level 1 + TKIP */
457#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
458#define SEC_LEVEL_3 4 /* Level 2 + CCMP */
459
460#define WEP_KEYS 4
461#define WEP_KEY_LEN 13
462
463struct ieee80211_security {
464 u16 active_key:2,
465 enabled:1,
466 auth_mode:2,
467 auth_algo:4,
468 unicast_uses_group:1;
469 u8 key_sizes[WEP_KEYS];
470 u8 keys[WEP_KEYS][WEP_KEY_LEN];
471 u8 level;
472 u16 flags;
473} __attribute__ ((packed));
474
475
476/*
477
478 802.11 data frame from AP
479
480 ,-------------------------------------------------------------------.
481Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
482 |------|------|---------|---------|---------|------|---------|------|
483Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
484 | | tion | (BSSID) | | | ence | data | |
485 `-------------------------------------------------------------------'
486
487Total: 28-2340 bytes
488
489*/
490
491struct ieee80211_header_data {
492 u16 frame_ctl;
493 u16 duration_id;
494 u8 addr1[6];
495 u8 addr2[6];
496 u8 addr3[6];
497 u16 seq_ctrl;
498};
499
500#define BEACON_PROBE_SSID_ID_POSITION 12
501
502/* Management Frame Information Element Types */
503#define MFIE_TYPE_SSID 0
504#define MFIE_TYPE_RATES 1
505#define MFIE_TYPE_FH_SET 2
506#define MFIE_TYPE_DS_SET 3
507#define MFIE_TYPE_CF_SET 4
508#define MFIE_TYPE_TIM 5
509#define MFIE_TYPE_IBSS_SET 6
510#define MFIE_TYPE_CHALLENGE 16
511#define MFIE_TYPE_RSN 48
512#define MFIE_TYPE_RATES_EX 50
513#define MFIE_TYPE_GENERIC 221
514
515struct ieee80211_info_element_hdr {
516 u8 id;
517 u8 len;
518} __attribute__ ((packed));
519
520struct ieee80211_info_element {
521 u8 id;
522 u8 len;
523 u8 data[0];
524} __attribute__ ((packed));
525
526/*
527 * These are the data types that can make up management packets
528 *
529 u16 auth_algorithm;
530 u16 auth_sequence;
531 u16 beacon_interval;
532 u16 capability;
533 u8 current_ap[ETH_ALEN];
534 u16 listen_interval;
535 struct {
536 u16 association_id:14, reserved:2;
537 } __attribute__ ((packed));
538 u32 time_stamp[2];
539 u16 reason;
540 u16 status;
541*/
542
543struct ieee80211_authentication {
544 struct ieee80211_header_data header;
545 u16 algorithm;
546 u16 transaction;
547 u16 status;
548 struct ieee80211_info_element info_element;
549} __attribute__ ((packed));
550
551
552struct ieee80211_probe_response {
553 struct ieee80211_header_data header;
554 u32 time_stamp[2];
555 u16 beacon_interval;
556 u16 capability;
557 struct ieee80211_info_element info_element;
558} __attribute__ ((packed));
559
560struct ieee80211_assoc_request_frame {
561 u16 capability;
562 u16 listen_interval;
563 u8 current_ap[ETH_ALEN];
564 struct ieee80211_info_element info_element;
565} __attribute__ ((packed));
566
567struct ieee80211_assoc_response_frame {
568 struct ieee80211_hdr_3addr header;
569 u16 capability;
570 u16 status;
571 u16 aid;
572 struct ieee80211_info_element info_element; /* supported rates */
573} __attribute__ ((packed));
574
575
576struct ieee80211_txb {
577 u8 nr_frags;
578 u8 encrypted;
579 u16 reserved;
580 u16 frag_size;
581 u16 payload_size;
582 struct sk_buff *fragments[0];
583};
584
585
586/* SWEEP TABLE ENTRIES NUMBER*/
587#define MAX_SWEEP_TAB_ENTRIES 42
588#define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
589/* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
590 * only use 8, and then use extended rates for the remaining supported
591 * rates. Other APs, however, stick all of their supported rates on the
592 * main rates information element... */
593#define MAX_RATES_LENGTH ((u8)12)
594#define MAX_RATES_EX_LENGTH ((u8)16)
595#define MAX_NETWORK_COUNT 128
596
597#define CRC_LENGTH 4U
598
599#define MAX_WPA_IE_LEN 64
600
601#define NETWORK_EMPTY_ESSID (1<<0)
602#define NETWORK_HAS_OFDM (1<<1)
603#define NETWORK_HAS_CCK (1<<2)
604
605struct ieee80211_network {
606 /* These entries are used to identify a unique network */
607 u8 bssid[ETH_ALEN];
608 u8 channel;
609 /* Ensure null-terminated for any debug msgs */
610 u8 ssid[IW_ESSID_MAX_SIZE + 1];
611 u8 ssid_len;
612
613 /* These are network statistics */
614 struct ieee80211_rx_stats stats;
615 u16 capability;
616 u8 rates[MAX_RATES_LENGTH];
617 u8 rates_len;
618 u8 rates_ex[MAX_RATES_EX_LENGTH];
619 u8 rates_ex_len;
620 unsigned long last_scanned;
621 u8 mode;
622 u8 flags;
623 u32 last_associate;
624 u32 time_stamp[2];
625 u16 beacon_interval;
626 u16 listen_interval;
627 u16 atim_window;
628 u8 wpa_ie[MAX_WPA_IE_LEN];
629 size_t wpa_ie_len;
630 u8 rsn_ie[MAX_WPA_IE_LEN];
631 size_t rsn_ie_len;
632 struct list_head list;
633};
634
635enum ieee80211_state {
636 IEEE80211_UNINITIALIZED = 0,
637 IEEE80211_INITIALIZED,
638 IEEE80211_ASSOCIATING,
639 IEEE80211_ASSOCIATED,
640 IEEE80211_AUTHENTICATING,
641 IEEE80211_AUTHENTICATED,
642 IEEE80211_SHUTDOWN
643};
644
645#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
646#define DEFAULT_FTS 2346
647#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
648#define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
649
650
651extern inline int is_broadcast_ether_addr(const u8 *addr)
652{
653 return ((addr[0] == 0xff) && (addr[1] == 0xff) && (addr[2] == 0xff) && \
654 (addr[3] == 0xff) && (addr[4] == 0xff) && (addr[5] == 0xff));
655}
656
657#define CFG_IEEE80211_RESERVE_FCS (1<<0)
658#define CFG_IEEE80211_COMPUTE_FCS (1<<1)
659
660struct ieee80211_device {
661 struct net_device *dev;
662
663 /* Bookkeeping structures */
664 struct net_device_stats stats;
665 struct ieee80211_stats ieee_stats;
666
667 /* Probe / Beacon management */
668 struct list_head network_free_list;
669 struct list_head network_list;
670 struct ieee80211_network *networks;
671 int scans;
672 int scan_age;
673
674 int iw_mode; /* operating mode (IW_MODE_*) */
675
676 spinlock_t lock;
677
678 int tx_headroom; /* Set to size of any additional room needed at front
679 * of allocated Tx SKBs */
680 u32 config;
681
682 /* WEP and other encryption related settings at the device level */
683 int open_wep; /* Set to 1 to allow unencrypted frames */
684
685 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
686 * WEP key changes */
687
688 /* If the host performs {en,de}cryption, then set to 1 */
689 int host_encrypt;
690 int host_decrypt;
691 int ieee802_1x; /* is IEEE 802.1X used */
692
693 /* WPA data */
694 int wpa_enabled;
695 int drop_unencrypted;
696 int tkip_countermeasures;
697 int privacy_invoked;
698 size_t wpa_ie_len;
699 u8 *wpa_ie;
700
701 struct list_head crypt_deinit_list;
702 struct ieee80211_crypt_data *crypt[WEP_KEYS];
703 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
704 struct timer_list crypt_deinit_timer;
705
706 int bcrx_sta_key; /* use individual keys to override default keys even
707 * with RX of broad/multicast frames */
708
709 /* Fragmentation structures */
710 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
711 unsigned int frag_next_idx;
712 u16 fts; /* Fragmentation Threshold */
713
714 /* Association info */
715 u8 bssid[ETH_ALEN];
716
717 enum ieee80211_state state;
718
719 int mode; /* A, B, G */
720 int modulation; /* CCK, OFDM */
721 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
722 int abg_ture; /* ABG flag */
723
724 /* Callback functions */
725 void (*set_security)(struct net_device *dev,
726 struct ieee80211_security *sec);
727 int (*hard_start_xmit)(struct ieee80211_txb *txb,
728 struct net_device *dev);
729 int (*reset_port)(struct net_device *dev);
730
731 /* This must be the last item so that it points to the data
732 * allocated beyond this structure by alloc_ieee80211 */
733 u8 priv[0];
734};
735
736#define IEEE_A (1<<0)
737#define IEEE_B (1<<1)
738#define IEEE_G (1<<2)
739#define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
740
741extern inline void *ieee80211_priv(struct net_device *dev)
742{
743 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
744}
745
746extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
747{
748 /* Single white space is for Linksys APs */
749 if (essid_len == 1 && essid[0] == ' ')
750 return 1;
751
752 /* Otherwise, if the entire essid is 0, we assume it is hidden */
753 while (essid_len) {
754 essid_len--;
755 if (essid[essid_len] != '\0')
756 return 0;
757 }
758
759 return 1;
760}
761
762extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee, int mode)
763{
764 /*
765 * It is possible for both access points and our device to support
766 * combinations of modes, so as long as there is one valid combination
767 * of ap/device supported modes, then return success
768 *
769 */
770 if ((mode & IEEE_A) &&
771 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
772 (ieee->freq_band & IEEE80211_52GHZ_BAND))
773 return 1;
774
775 if ((mode & IEEE_G) &&
776 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
777 (ieee->freq_band & IEEE80211_24GHZ_BAND))
778 return 1;
779
780 if ((mode & IEEE_B) &&
781 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
782 (ieee->freq_band & IEEE80211_24GHZ_BAND))
783 return 1;
784
785 return 0;
786}
787
788extern inline int ieee80211_get_hdrlen(u16 fc)
789{
790 int hdrlen = 24;
791
792 switch (WLAN_FC_GET_TYPE(fc)) {
793 case IEEE80211_FTYPE_DATA:
794 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
795 hdrlen = 30; /* Addr4 */
796 break;
797 case IEEE80211_FTYPE_CTL:
798 switch (WLAN_FC_GET_STYPE(fc)) {
799 case IEEE80211_STYPE_CTS:
800 case IEEE80211_STYPE_ACK:
801 hdrlen = 10;
802 break;
803 default:
804 hdrlen = 16;
805 break;
806 }
807 break;
808 }
809
810 return hdrlen;
811}
812
813
814
815/* ieee80211.c */
816extern void free_ieee80211(struct net_device *dev);
817extern struct net_device *alloc_ieee80211(int sizeof_priv);
818
819extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
820
821/* ieee80211_tx.c */
822
823
824extern int ieee80211_xmit(struct sk_buff *skb,
825 struct net_device *dev);
826extern void ieee80211_txb_free(struct ieee80211_txb *);
827
828
829/* ieee80211_rx.c */
830extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
831 struct ieee80211_rx_stats *rx_stats);
832extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
833 struct ieee80211_hdr *header,
834 struct ieee80211_rx_stats *stats);
835
836/* iee80211_wx.c */
837extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
838 struct iw_request_info *info,
839 union iwreq_data *wrqu, char *key);
840extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
841 struct iw_request_info *info,
842 union iwreq_data *wrqu, char *key);
843extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
844 struct iw_request_info *info,
845 union iwreq_data *wrqu, char *key);
846
847
848extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
849{
850 ieee->scans++;
851}
852
853extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
854{
855 return ieee->scans;
856}
857
858static inline const char *escape_essid(const char *essid, u8 essid_len) {
859 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
860 const char *s = essid;
861 char *d = escaped;
862
863 if (ieee80211_is_empty_essid(essid, essid_len)) {
864 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
865 return escaped;
866 }
867
868 essid_len = min(essid_len, (u8)IW_ESSID_MAX_SIZE);
869 while (essid_len--) {
870 if (*s == '\0') {
871 *d++ = '\\';
872 *d++ = '0';
873 s++;
874 } else {
875 *d++ = *s++;
876 }
877 }
878 *d = '\0';
879 return escaped;
880}
881
882#endif /* IEEE80211_H */