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 */
27 #define IW_QUAL_QUAL_INVALID 0x10
28 #define IW_QUAL_LEVEL_INVALID 0x20
29 #define IW_QUAL_NOISE_INVALID 0x40
30 #define IW_QUAL_QUAL_UPDATED 0x1
31 #define IW_QUAL_LEVEL_UPDATED 0x2
32 #define IW_QUAL_NOISE_UPDATED 0x4
35 #define IEEE80211_DATA_LEN 2304
36 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
39 The figure in section 7.1.2 suggests a body size of up to 2312
40 bytes is allowed, which is a bit confusing, I suspect this
41 represents the 2304 bytes of real data, plus a possible 8 bytes of
42 WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
45 #define IEEE80211_HLEN 30
46 #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
48 struct ieee80211_hdr {
56 } __attribute__ ((packed));
58 struct ieee80211_hdr_3addr {
65 } __attribute__ ((packed));
75 static const char *eap_types[] = {
76 [EAP_PACKET] = "EAP-Packet",
77 [EAPOL_START] = "EAPOL-Start",
78 [EAPOL_LOGOFF] = "EAPOL-Logoff",
79 [EAPOL_KEY] = "EAPOL-Key",
80 [EAPOL_ENCAP_ASF_ALERT] = "EAPOL-Encap-ASF-Alert"
83 static inline const char *eap_get_type(int type)
85 return (type >= ARRAY_SIZE(eap_types)) ? "Unknown" : eap_types[type];
94 } __attribute__ ((packed));
96 #define IEEE80211_1ADDR_LEN 10
97 #define IEEE80211_2ADDR_LEN 16
98 #define IEEE80211_3ADDR_LEN 24
99 #define IEEE80211_4ADDR_LEN 30
100 #define IEEE80211_FCS_LEN 4
102 #define MIN_FRAG_THRESHOLD 256U
103 #define MAX_FRAG_THRESHOLD 2346U
105 /* Frame control field constants */
106 #define IEEE80211_FCTL_VERS 0x0002
107 #define IEEE80211_FCTL_FTYPE 0x000c
108 #define IEEE80211_FCTL_STYPE 0x00f0
109 #define IEEE80211_FCTL_TODS 0x0100
110 #define IEEE80211_FCTL_FROMDS 0x0200
111 #define IEEE80211_FCTL_MOREFRAGS 0x0400
112 #define IEEE80211_FCTL_RETRY 0x0800
113 #define IEEE80211_FCTL_PM 0x1000
114 #define IEEE80211_FCTL_MOREDATA 0x2000
115 #define IEEE80211_FCTL_WEP 0x4000
116 #define IEEE80211_FCTL_ORDER 0x8000
118 #define IEEE80211_FTYPE_MGMT 0x0000
119 #define IEEE80211_FTYPE_CTL 0x0004
120 #define IEEE80211_FTYPE_DATA 0x0008
123 #define IEEE80211_STYPE_ASSOC_REQ 0x0000
124 #define IEEE80211_STYPE_ASSOC_RESP 0x0010
125 #define IEEE80211_STYPE_REASSOC_REQ 0x0020
126 #define IEEE80211_STYPE_REASSOC_RESP 0x0030
127 #define IEEE80211_STYPE_PROBE_REQ 0x0040
128 #define IEEE80211_STYPE_PROBE_RESP 0x0050
129 #define IEEE80211_STYPE_BEACON 0x0080
130 #define IEEE80211_STYPE_ATIM 0x0090
131 #define IEEE80211_STYPE_DISASSOC 0x00A0
132 #define IEEE80211_STYPE_AUTH 0x00B0
133 #define IEEE80211_STYPE_DEAUTH 0x00C0
136 #define IEEE80211_STYPE_PSPOLL 0x00A0
137 #define IEEE80211_STYPE_RTS 0x00B0
138 #define IEEE80211_STYPE_CTS 0x00C0
139 #define IEEE80211_STYPE_ACK 0x00D0
140 #define IEEE80211_STYPE_CFEND 0x00E0
141 #define IEEE80211_STYPE_CFENDACK 0x00F0
144 #define IEEE80211_STYPE_DATA 0x0000
145 #define IEEE80211_STYPE_DATA_CFACK 0x0010
146 #define IEEE80211_STYPE_DATA_CFPOLL 0x0020
147 #define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
148 #define IEEE80211_STYPE_NULLFUNC 0x0040
149 #define IEEE80211_STYPE_CFACK 0x0050
150 #define IEEE80211_STYPE_CFPOLL 0x0060
151 #define IEEE80211_STYPE_CFACKPOLL 0x0070
153 #define IEEE80211_SCTL_FRAG 0x000F
154 #define IEEE80211_SCTL_SEQ 0xFFF0
159 #ifdef CONFIG_IEEE80211_DEBUG
160 extern u32 ieee80211_debug_level;
161 #define IEEE80211_DEBUG(level, fmt, args...) \
162 do { if (ieee80211_debug_level & (level)) \
163 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
164 in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
166 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
167 #endif /* CONFIG_IEEE80211_DEBUG */
170 * To use the debug system;
172 * If you are defining a new debug classification, simply add it to the #define
173 * list here in the form of:
175 * #define IEEE80211_DL_xxxx VALUE
177 * shifting value to the left one bit from the previous entry. xxxx should be
178 * the name of the classification (for example, WEP)
180 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
181 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
182 * to send output to that classification.
184 * To add your debug level to the list of levels seen when you perform
186 * % cat /proc/net/ipw/debug_level
188 * you simply need to add your entry to the ipw_debug_levels array.
190 * If you do not see debug_level in /proc/net/ipw then you do not have
191 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
195 #define IEEE80211_DL_INFO (1<<0)
196 #define IEEE80211_DL_WX (1<<1)
197 #define IEEE80211_DL_SCAN (1<<2)
198 #define IEEE80211_DL_STATE (1<<3)
199 #define IEEE80211_DL_MGMT (1<<4)
200 #define IEEE80211_DL_FRAG (1<<5)
201 #define IEEE80211_DL_EAP (1<<6)
202 #define IEEE80211_DL_DROP (1<<7)
204 #define IEEE80211_DL_TX (1<<8)
205 #define IEEE80211_DL_RX (1<<9)
207 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
208 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
209 #define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
211 #define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
212 #define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
213 #define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
214 #define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
215 #define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
216 #define IEEE80211_DEBUG_EAP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_EAP, f, ## a)
217 #define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
218 #define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
219 #define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
220 #include <linux/netdevice.h>
221 #include <linux/wireless.h>
222 #include <linux/if_arp.h> /* ARPHRD_ETHER */
225 #define WIRELESS_SPY // enable iwspy support
227 #include <net/iw_handler.h> // new driver API
230 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
231 #endif /* ETH_P_PAE */
233 #define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
235 #ifndef ETH_P_80211_RAW
236 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
239 /* IEEE 802.11 defines */
241 #define P80211_OUI_LEN 3
243 struct ieee80211_snap_hdr {
245 u8 dsap; /* always 0xAA */
246 u8 ssap; /* always 0xAA */
247 u8 ctrl; /* always 0x03 */
248 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
250 } __attribute__ ((packed));
252 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
254 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
255 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
257 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
258 #define WLAN_GET_SEQ_SEQ(seq) ((seq) & IEEE80211_SCTL_SEQ)
260 /* Authentication algorithms */
261 #define WLAN_AUTH_OPEN 0
262 #define WLAN_AUTH_SHARED_KEY 1
264 #define WLAN_AUTH_CHALLENGE_LEN 128
266 #define WLAN_CAPABILITY_BSS (1<<0)
267 #define WLAN_CAPABILITY_IBSS (1<<1)
268 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
269 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
270 #define WLAN_CAPABILITY_PRIVACY (1<<4)
271 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
272 #define WLAN_CAPABILITY_PBCC (1<<6)
273 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
276 #define WLAN_STATUS_SUCCESS 0
277 #define WLAN_STATUS_UNSPECIFIED_FAILURE 1
278 #define WLAN_STATUS_CAPS_UNSUPPORTED 10
279 #define WLAN_STATUS_REASSOC_NO_ASSOC 11
280 #define WLAN_STATUS_ASSOC_DENIED_UNSPEC 12
281 #define WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG 13
282 #define WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION 14
283 #define WLAN_STATUS_CHALLENGE_FAIL 15
284 #define WLAN_STATUS_AUTH_TIMEOUT 16
285 #define WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA 17
286 #define WLAN_STATUS_ASSOC_DENIED_RATES 18
288 #define WLAN_STATUS_ASSOC_DENIED_NOSHORT 19
289 #define WLAN_STATUS_ASSOC_DENIED_NOPBCC 20
290 #define WLAN_STATUS_ASSOC_DENIED_NOAGILITY 21
293 #define WLAN_REASON_UNSPECIFIED 1
294 #define WLAN_REASON_PREV_AUTH_NOT_VALID 2
295 #define WLAN_REASON_DEAUTH_LEAVING 3
296 #define WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY 4
297 #define WLAN_REASON_DISASSOC_AP_BUSY 5
298 #define WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA 6
299 #define WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA 7
300 #define WLAN_REASON_DISASSOC_STA_HAS_LEFT 8
301 #define WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH 9
304 #define IEEE80211_STATMASK_SIGNAL (1<<0)
305 #define IEEE80211_STATMASK_RSSI (1<<1)
306 #define IEEE80211_STATMASK_NOISE (1<<2)
307 #define IEEE80211_STATMASK_RATE (1<<3)
308 #define IEEE80211_STATMASK_WEMASK 0x7
311 #define IEEE80211_CCK_MODULATION (1<<0)
312 #define IEEE80211_OFDM_MODULATION (1<<1)
314 #define IEEE80211_24GHZ_BAND (1<<0)
315 #define IEEE80211_52GHZ_BAND (1<<1)
317 #define IEEE80211_CCK_RATE_1MB 0x02
318 #define IEEE80211_CCK_RATE_2MB 0x04
319 #define IEEE80211_CCK_RATE_5MB 0x0B
320 #define IEEE80211_CCK_RATE_11MB 0x16
321 #define IEEE80211_OFDM_RATE_6MB 0x0C
322 #define IEEE80211_OFDM_RATE_9MB 0x12
323 #define IEEE80211_OFDM_RATE_12MB 0x18
324 #define IEEE80211_OFDM_RATE_18MB 0x24
325 #define IEEE80211_OFDM_RATE_24MB 0x30
326 #define IEEE80211_OFDM_RATE_36MB 0x48
327 #define IEEE80211_OFDM_RATE_48MB 0x60
328 #define IEEE80211_OFDM_RATE_54MB 0x6C
329 #define IEEE80211_BASIC_RATE_MASK 0x80
331 #define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
332 #define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
333 #define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
334 #define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
335 #define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
336 #define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
337 #define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
338 #define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
339 #define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
340 #define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
341 #define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
342 #define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
344 #define IEEE80211_CCK_RATES_MASK 0x0000000F
345 #define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
346 IEEE80211_CCK_RATE_2MB_MASK)
347 #define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
348 IEEE80211_CCK_RATE_5MB_MASK | \
349 IEEE80211_CCK_RATE_11MB_MASK)
351 #define IEEE80211_OFDM_RATES_MASK 0x00000FF0
352 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
353 IEEE80211_OFDM_RATE_12MB_MASK | \
354 IEEE80211_OFDM_RATE_24MB_MASK)
355 #define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
356 IEEE80211_OFDM_RATE_9MB_MASK | \
357 IEEE80211_OFDM_RATE_18MB_MASK | \
358 IEEE80211_OFDM_RATE_36MB_MASK | \
359 IEEE80211_OFDM_RATE_48MB_MASK | \
360 IEEE80211_OFDM_RATE_54MB_MASK)
361 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
362 IEEE80211_CCK_DEFAULT_RATES_MASK)
364 #define IEEE80211_NUM_OFDM_RATES 8
365 #define IEEE80211_NUM_CCK_RATES 4
366 #define IEEE80211_OFDM_SHIFT_MASK_A 4
371 /* NOTE: This data is for statistical purposes; not all hardware provides this
372 * information for frames received. Not setting these will not cause
373 * any adverse affects. */
374 struct ieee80211_rx_stats {
379 u16 rate; /* in 100 kbps */
387 /* IEEE 802.11 requires that STA supports concurrent reception of at least
388 * three fragmented frames. This define can be increased to support more
389 * concurrent frames, but it should be noted that each entry can consume about
390 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
391 #define IEEE80211_FRAG_CACHE_LEN 4
393 struct ieee80211_frag_entry {
394 unsigned long first_frag_time;
396 unsigned int last_frag;
398 u8 src_addr[ETH_ALEN];
399 u8 dst_addr[ETH_ALEN];
402 struct ieee80211_stats {
403 unsigned int tx_unicast_frames;
404 unsigned int tx_multicast_frames;
405 unsigned int tx_fragments;
406 unsigned int tx_unicast_octets;
407 unsigned int tx_multicast_octets;
408 unsigned int tx_deferred_transmissions;
409 unsigned int tx_single_retry_frames;
410 unsigned int tx_multiple_retry_frames;
411 unsigned int tx_retry_limit_exceeded;
412 unsigned int tx_discards;
413 unsigned int rx_unicast_frames;
414 unsigned int rx_multicast_frames;
415 unsigned int rx_fragments;
416 unsigned int rx_unicast_octets;
417 unsigned int rx_multicast_octets;
418 unsigned int rx_fcs_errors;
419 unsigned int rx_discards_no_buffer;
420 unsigned int tx_discards_wrong_sa;
421 unsigned int rx_discards_undecryptable;
422 unsigned int rx_message_in_msg_fragments;
423 unsigned int rx_message_in_bad_msg_fragments;
426 struct ieee80211_device;
428 #include "ieee80211_crypt.h"
430 #define SEC_KEY_1 (1<<0)
431 #define SEC_KEY_2 (1<<1)
432 #define SEC_KEY_3 (1<<2)
433 #define SEC_KEY_4 (1<<3)
434 #define SEC_ACTIVE_KEY (1<<4)
435 #define SEC_AUTH_MODE (1<<5)
436 #define SEC_UNICAST_GROUP (1<<6)
437 #define SEC_LEVEL (1<<7)
438 #define SEC_ENABLED (1<<8)
440 #define SEC_LEVEL_0 0 /* None */
441 #define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
442 #define SEC_LEVEL_2 2 /* Level 1 + TKIP */
443 #define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
444 #define SEC_LEVEL_3 4 /* Level 2 + CCMP */
447 #define WEP_KEY_LEN 13
449 struct ieee80211_security {
454 unicast_uses_group:1;
455 u8 key_sizes[WEP_KEYS];
456 u8 keys[WEP_KEYS][WEP_KEY_LEN];
459 } __attribute__ ((packed));
464 802.11 data frame from AP
466 ,-------------------------------------------------------------------.
467 Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
468 |------|------|---------|---------|---------|------|---------|------|
469 Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
470 | | tion | (BSSID) | | | ence | data | |
471 `-------------------------------------------------------------------'
477 #define BEACON_PROBE_SSID_ID_POSITION 12
479 /* Management Frame Information Element Types */
480 #define MFIE_TYPE_SSID 0
481 #define MFIE_TYPE_RATES 1
482 #define MFIE_TYPE_FH_SET 2
483 #define MFIE_TYPE_DS_SET 3
484 #define MFIE_TYPE_CF_SET 4
485 #define MFIE_TYPE_TIM 5
486 #define MFIE_TYPE_IBSS_SET 6
487 #define MFIE_TYPE_CHALLENGE 16
488 #define MFIE_TYPE_RSN 48
489 #define MFIE_TYPE_RATES_EX 50
490 #define MFIE_TYPE_GENERIC 221
492 struct ieee80211_info_element_hdr {
495 } __attribute__ ((packed));
497 struct ieee80211_info_element {
501 } __attribute__ ((packed));
504 * These are the data types that can make up management packets
510 u8 current_ap[ETH_ALEN];
513 u16 association_id:14, reserved:2;
514 } __attribute__ ((packed));
520 struct ieee80211_authentication {
521 struct ieee80211_hdr_3addr header;
525 struct ieee80211_info_element info_element;
526 } __attribute__ ((packed));
529 struct ieee80211_probe_response {
530 struct ieee80211_hdr_3addr header;
534 struct ieee80211_info_element info_element;
535 } __attribute__ ((packed));
537 struct ieee80211_assoc_request_frame {
540 u8 current_ap[ETH_ALEN];
541 struct ieee80211_info_element info_element;
542 } __attribute__ ((packed));
544 struct ieee80211_assoc_response_frame {
545 struct ieee80211_hdr_3addr header;
549 struct ieee80211_info_element info_element; /* supported rates */
550 } __attribute__ ((packed));
553 struct ieee80211_txb {
559 struct sk_buff *fragments[0];
563 /* SWEEP TABLE ENTRIES NUMBER*/
564 #define MAX_SWEEP_TAB_ENTRIES 42
565 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
566 /* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
567 * only use 8, and then use extended rates for the remaining supported
568 * rates. Other APs, however, stick all of their supported rates on the
569 * main rates information element... */
570 #define MAX_RATES_LENGTH ((u8)12)
571 #define MAX_RATES_EX_LENGTH ((u8)16)
572 #define MAX_NETWORK_COUNT 128
574 #define CRC_LENGTH 4U
576 #define MAX_WPA_IE_LEN 64
578 #define NETWORK_EMPTY_ESSID (1<<0)
579 #define NETWORK_HAS_OFDM (1<<1)
580 #define NETWORK_HAS_CCK (1<<2)
582 struct ieee80211_network {
583 /* These entries are used to identify a unique network */
586 /* Ensure null-terminated for any debug msgs */
587 u8 ssid[IW_ESSID_MAX_SIZE + 1];
590 /* These are network statistics */
591 struct ieee80211_rx_stats stats;
593 u8 rates[MAX_RATES_LENGTH];
595 u8 rates_ex[MAX_RATES_EX_LENGTH];
597 unsigned long last_scanned;
605 u8 wpa_ie[MAX_WPA_IE_LEN];
607 u8 rsn_ie[MAX_WPA_IE_LEN];
609 struct list_head list;
612 enum ieee80211_state {
613 IEEE80211_UNINITIALIZED = 0,
614 IEEE80211_INITIALIZED,
615 IEEE80211_ASSOCIATING,
616 IEEE80211_ASSOCIATED,
617 IEEE80211_AUTHENTICATING,
618 IEEE80211_AUTHENTICATED,
622 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
623 #define DEFAULT_FTS 2346
624 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
625 #define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
628 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
629 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
631 struct ieee80211_device {
632 struct net_device *dev;
634 /* Bookkeeping structures */
635 struct net_device_stats stats;
636 struct ieee80211_stats ieee_stats;
638 /* Probe / Beacon management */
639 struct list_head network_free_list;
640 struct list_head network_list;
641 struct ieee80211_network *networks;
645 int iw_mode; /* operating mode (IW_MODE_*) */
649 int tx_headroom; /* Set to size of any additional room needed at front
650 * of allocated Tx SKBs */
653 /* WEP and other encryption related settings at the device level */
654 int open_wep; /* Set to 1 to allow unencrypted frames */
656 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
659 /* If the host performs {en,de}cryption, then set to 1 */
662 int ieee802_1x; /* is IEEE 802.1X used */
666 int drop_unencrypted;
667 int tkip_countermeasures;
672 struct list_head crypt_deinit_list;
673 struct ieee80211_crypt_data *crypt[WEP_KEYS];
674 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
675 struct timer_list crypt_deinit_timer;
677 int bcrx_sta_key; /* use individual keys to override default keys even
678 * with RX of broad/multicast frames */
680 /* Fragmentation structures */
681 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
682 unsigned int frag_next_idx;
683 u16 fts; /* Fragmentation Threshold */
685 /* Association info */
688 enum ieee80211_state state;
690 int mode; /* A, B, G */
691 int modulation; /* CCK, OFDM */
692 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
693 int abg_ture; /* ABG flag */
695 /* Callback functions */
696 void (*set_security)(struct net_device *dev,
697 struct ieee80211_security *sec);
698 int (*hard_start_xmit)(struct ieee80211_txb *txb,
699 struct net_device *dev);
700 int (*reset_port)(struct net_device *dev);
702 /* This must be the last item so that it points to the data
703 * allocated beyond this structure by alloc_ieee80211 */
707 #define IEEE_A (1<<0)
708 #define IEEE_B (1<<1)
709 #define IEEE_G (1<<2)
710 #define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
712 extern inline void *ieee80211_priv(struct net_device *dev)
714 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
717 extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
719 /* Single white space is for Linksys APs */
720 if (essid_len == 1 && essid[0] == ' ')
723 /* Otherwise, if the entire essid is 0, we assume it is hidden */
726 if (essid[essid_len] != '\0')
733 extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee, int mode)
736 * It is possible for both access points and our device to support
737 * combinations of modes, so as long as there is one valid combination
738 * of ap/device supported modes, then return success
741 if ((mode & IEEE_A) &&
742 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
743 (ieee->freq_band & IEEE80211_52GHZ_BAND))
746 if ((mode & IEEE_G) &&
747 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
748 (ieee->freq_band & IEEE80211_24GHZ_BAND))
751 if ((mode & IEEE_B) &&
752 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
753 (ieee->freq_band & IEEE80211_24GHZ_BAND))
759 extern inline int ieee80211_get_hdrlen(u16 fc)
761 int hdrlen = IEEE80211_3ADDR_LEN;
763 switch (WLAN_FC_GET_TYPE(fc)) {
764 case IEEE80211_FTYPE_DATA:
765 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
766 hdrlen = IEEE80211_4ADDR_LEN;
768 case IEEE80211_FTYPE_CTL:
769 switch (WLAN_FC_GET_STYPE(fc)) {
770 case IEEE80211_STYPE_CTS:
771 case IEEE80211_STYPE_ACK:
772 hdrlen = IEEE80211_1ADDR_LEN;
775 hdrlen = IEEE80211_2ADDR_LEN;
787 extern void free_ieee80211(struct net_device *dev);
788 extern struct net_device *alloc_ieee80211(int sizeof_priv);
790 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
795 extern int ieee80211_xmit(struct sk_buff *skb,
796 struct net_device *dev);
797 extern void ieee80211_txb_free(struct ieee80211_txb *);
801 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
802 struct ieee80211_rx_stats *rx_stats);
803 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
804 struct ieee80211_hdr *header,
805 struct ieee80211_rx_stats *stats);
808 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
809 struct iw_request_info *info,
810 union iwreq_data *wrqu, char *key);
811 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
812 struct iw_request_info *info,
813 union iwreq_data *wrqu, char *key);
814 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
815 struct iw_request_info *info,
816 union iwreq_data *wrqu, char *key);
819 extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
824 extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
829 static inline const char *escape_essid(const char *essid, u8 essid_len) {
830 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
831 const char *s = essid;
834 if (ieee80211_is_empty_essid(essid, essid_len)) {
835 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
839 essid_len = min(essid_len, (u8)IW_ESSID_MAX_SIZE);
840 while (essid_len--) {
852 #endif /* IEEE80211_H */