4 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
6 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
7 * Copyright (c) 2005, Devicescape Software, Inc.
8 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #ifndef LINUX_IEEE80211_H
16 #define LINUX_IEEE80211_H
18 #include <linux/types.h>
19 #include <asm/byteorder.h>
24 * TA = transmitter address
25 * RA = receiver address
26 * DA = destination address
29 * ToDS FromDS A1(RA) A2(TA) A3 A4 Use
30 * -----------------------------------------------------------------
31 * 0 0 DA SA BSSID - IBSS/DLS
32 * 0 1 DA BSSID SA - AP -> STA
33 * 1 0 BSSID SA DA - AP <- STA
34 * 1 1 RA TA DA SA unspecified (WDS)
39 #define IEEE80211_FCTL_VERS 0x0003
40 #define IEEE80211_FCTL_FTYPE 0x000c
41 #define IEEE80211_FCTL_STYPE 0x00f0
42 #define IEEE80211_FCTL_TODS 0x0100
43 #define IEEE80211_FCTL_FROMDS 0x0200
44 #define IEEE80211_FCTL_MOREFRAGS 0x0400
45 #define IEEE80211_FCTL_RETRY 0x0800
46 #define IEEE80211_FCTL_PM 0x1000
47 #define IEEE80211_FCTL_MOREDATA 0x2000
48 #define IEEE80211_FCTL_PROTECTED 0x4000
49 #define IEEE80211_FCTL_ORDER 0x8000
51 #define IEEE80211_SCTL_FRAG 0x000F
52 #define IEEE80211_SCTL_SEQ 0xFFF0
54 #define IEEE80211_FTYPE_MGMT 0x0000
55 #define IEEE80211_FTYPE_CTL 0x0004
56 #define IEEE80211_FTYPE_DATA 0x0008
59 #define IEEE80211_STYPE_ASSOC_REQ 0x0000
60 #define IEEE80211_STYPE_ASSOC_RESP 0x0010
61 #define IEEE80211_STYPE_REASSOC_REQ 0x0020
62 #define IEEE80211_STYPE_REASSOC_RESP 0x0030
63 #define IEEE80211_STYPE_PROBE_REQ 0x0040
64 #define IEEE80211_STYPE_PROBE_RESP 0x0050
65 #define IEEE80211_STYPE_BEACON 0x0080
66 #define IEEE80211_STYPE_ATIM 0x0090
67 #define IEEE80211_STYPE_DISASSOC 0x00A0
68 #define IEEE80211_STYPE_AUTH 0x00B0
69 #define IEEE80211_STYPE_DEAUTH 0x00C0
70 #define IEEE80211_STYPE_ACTION 0x00D0
73 #define IEEE80211_STYPE_BACK_REQ 0x0080
74 #define IEEE80211_STYPE_BACK 0x0090
75 #define IEEE80211_STYPE_PSPOLL 0x00A0
76 #define IEEE80211_STYPE_RTS 0x00B0
77 #define IEEE80211_STYPE_CTS 0x00C0
78 #define IEEE80211_STYPE_ACK 0x00D0
79 #define IEEE80211_STYPE_CFEND 0x00E0
80 #define IEEE80211_STYPE_CFENDACK 0x00F0
83 #define IEEE80211_STYPE_DATA 0x0000
84 #define IEEE80211_STYPE_DATA_CFACK 0x0010
85 #define IEEE80211_STYPE_DATA_CFPOLL 0x0020
86 #define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
87 #define IEEE80211_STYPE_NULLFUNC 0x0040
88 #define IEEE80211_STYPE_CFACK 0x0050
89 #define IEEE80211_STYPE_CFPOLL 0x0060
90 #define IEEE80211_STYPE_CFACKPOLL 0x0070
91 #define IEEE80211_STYPE_QOS_DATA 0x0080
92 #define IEEE80211_STYPE_QOS_DATA_CFACK 0x0090
93 #define IEEE80211_STYPE_QOS_DATA_CFPOLL 0x00A0
94 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL 0x00B0
95 #define IEEE80211_STYPE_QOS_NULLFUNC 0x00C0
96 #define IEEE80211_STYPE_QOS_CFACK 0x00D0
97 #define IEEE80211_STYPE_QOS_CFPOLL 0x00E0
98 #define IEEE80211_STYPE_QOS_CFACKPOLL 0x00F0
101 /* miscellaneous IEEE 802.11 constants */
102 #define IEEE80211_MAX_FRAG_THRESHOLD 2352
103 #define IEEE80211_MAX_RTS_THRESHOLD 2353
104 #define IEEE80211_MAX_AID 2007
105 #define IEEE80211_MAX_TIM_LEN 251
106 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
109 802.11e clarifies the figure in section 7.1.2. The frame body is
110 up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
111 #define IEEE80211_MAX_DATA_LEN 2304
112 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
113 #define IEEE80211_MAX_FRAME_LEN 2352
115 #define IEEE80211_MAX_SSID_LEN 32
117 #define IEEE80211_MAX_MESH_ID_LEN 32
118 #define IEEE80211_MESH_CONFIG_LEN 19
120 #define IEEE80211_QOS_CTL_LEN 2
121 #define IEEE80211_QOS_CTL_TID_MASK 0x000F
122 #define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007
124 struct ieee80211_hdr {
125 __le16 frame_control;
132 } __attribute__ ((packed));
135 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
136 * @fc: frame control bytes in little-endian byteorder
138 static inline int ieee80211_has_tods(__le16 fc)
140 return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
144 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
145 * @fc: frame control bytes in little-endian byteorder
147 static inline int ieee80211_has_fromds(__le16 fc)
149 return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
153 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
154 * @fc: frame control bytes in little-endian byteorder
156 static inline int ieee80211_has_a4(__le16 fc)
158 __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
159 return (fc & tmp) == tmp;
163 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
164 * @fc: frame control bytes in little-endian byteorder
166 static inline int ieee80211_has_morefrags(__le16 fc)
168 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
172 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
173 * @fc: frame control bytes in little-endian byteorder
175 static inline int ieee80211_has_retry(__le16 fc)
177 return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
181 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
182 * @fc: frame control bytes in little-endian byteorder
184 static inline int ieee80211_has_pm(__le16 fc)
186 return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
190 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
191 * @fc: frame control bytes in little-endian byteorder
193 static inline int ieee80211_has_moredata(__le16 fc)
195 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
199 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
200 * @fc: frame control bytes in little-endian byteorder
202 static inline int ieee80211_has_protected(__le16 fc)
204 return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
208 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
209 * @fc: frame control bytes in little-endian byteorder
211 static inline int ieee80211_has_order(__le16 fc)
213 return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
217 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
218 * @fc: frame control bytes in little-endian byteorder
220 static inline int ieee80211_is_mgmt(__le16 fc)
222 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
223 cpu_to_le16(IEEE80211_FTYPE_MGMT);
227 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
228 * @fc: frame control bytes in little-endian byteorder
230 static inline int ieee80211_is_ctl(__le16 fc)
232 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
233 cpu_to_le16(IEEE80211_FTYPE_CTL);
237 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
238 * @fc: frame control bytes in little-endian byteorder
240 static inline int ieee80211_is_data(__le16 fc)
242 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
243 cpu_to_le16(IEEE80211_FTYPE_DATA);
247 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
248 * @fc: frame control bytes in little-endian byteorder
250 static inline int ieee80211_is_data_qos(__le16 fc)
253 * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
254 * to check the one bit
256 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
257 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
261 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
262 * @fc: frame control bytes in little-endian byteorder
264 static inline int ieee80211_is_data_present(__le16 fc)
267 * mask with 0x40 and test that that bit is clear to only return true
268 * for the data-containing substypes.
270 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
271 cpu_to_le16(IEEE80211_FTYPE_DATA);
275 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
276 * @fc: frame control bytes in little-endian byteorder
278 static inline int ieee80211_is_assoc_req(__le16 fc)
280 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
281 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
285 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
286 * @fc: frame control bytes in little-endian byteorder
288 static inline int ieee80211_is_assoc_resp(__le16 fc)
290 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
291 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
295 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
296 * @fc: frame control bytes in little-endian byteorder
298 static inline int ieee80211_is_reassoc_req(__le16 fc)
300 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
301 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
305 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
306 * @fc: frame control bytes in little-endian byteorder
308 static inline int ieee80211_is_reassoc_resp(__le16 fc)
310 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
311 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
315 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
316 * @fc: frame control bytes in little-endian byteorder
318 static inline int ieee80211_is_probe_req(__le16 fc)
320 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
321 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
325 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
326 * @fc: frame control bytes in little-endian byteorder
328 static inline int ieee80211_is_probe_resp(__le16 fc)
330 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
331 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
335 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
336 * @fc: frame control bytes in little-endian byteorder
338 static inline int ieee80211_is_beacon(__le16 fc)
340 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
341 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
345 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
346 * @fc: frame control bytes in little-endian byteorder
348 static inline int ieee80211_is_atim(__le16 fc)
350 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
351 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
355 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
356 * @fc: frame control bytes in little-endian byteorder
358 static inline int ieee80211_is_disassoc(__le16 fc)
360 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
361 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
365 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
366 * @fc: frame control bytes in little-endian byteorder
368 static inline int ieee80211_is_auth(__le16 fc)
370 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
371 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
375 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
376 * @fc: frame control bytes in little-endian byteorder
378 static inline int ieee80211_is_deauth(__le16 fc)
380 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
381 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
385 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
386 * @fc: frame control bytes in little-endian byteorder
388 static inline int ieee80211_is_action(__le16 fc)
390 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
391 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
395 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
396 * @fc: frame control bytes in little-endian byteorder
398 static inline int ieee80211_is_back_req(__le16 fc)
400 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
401 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
405 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
406 * @fc: frame control bytes in little-endian byteorder
408 static inline int ieee80211_is_back(__le16 fc)
410 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
411 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
415 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
416 * @fc: frame control bytes in little-endian byteorder
418 static inline int ieee80211_is_pspoll(__le16 fc)
420 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
421 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
425 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
426 * @fc: frame control bytes in little-endian byteorder
428 static inline int ieee80211_is_rts(__le16 fc)
430 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
431 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
435 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
436 * @fc: frame control bytes in little-endian byteorder
438 static inline int ieee80211_is_cts(__le16 fc)
440 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
441 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
445 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
446 * @fc: frame control bytes in little-endian byteorder
448 static inline int ieee80211_is_ack(__le16 fc)
450 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
451 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
455 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
456 * @fc: frame control bytes in little-endian byteorder
458 static inline int ieee80211_is_cfend(__le16 fc)
460 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
461 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
465 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
466 * @fc: frame control bytes in little-endian byteorder
468 static inline int ieee80211_is_cfendack(__le16 fc)
470 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
471 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
475 * ieee80211_is_nullfunc - check if FTYPE=IEEE80211_FTYPE_DATA and STYPE=IEEE80211_STYPE_NULLFUNC
476 * @fc: frame control bytes in little-endian byteorder
478 static inline int ieee80211_is_nullfunc(__le16 fc)
480 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
481 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
484 struct ieee80211s_hdr {
491 } __attribute__ ((packed));
494 #define MESH_FLAGS_AE_A4 0x1
495 #define MESH_FLAGS_AE_A5_A6 0x2
496 #define MESH_FLAGS_AE 0x3
497 #define MESH_FLAGS_PS_DEEP 0x4
500 * struct ieee80211_quiet_ie
502 * This structure refers to "Quiet information element"
504 struct ieee80211_quiet_ie {
509 } __attribute__ ((packed));
512 * struct ieee80211_msrment_ie
514 * This structure refers to "Measurement Request/Report information element"
516 struct ieee80211_msrment_ie {
521 } __attribute__ ((packed));
524 * struct ieee80211_channel_sw_ie
526 * This structure refers to "Channel Switch Announcement information element"
528 struct ieee80211_channel_sw_ie {
532 } __attribute__ ((packed));
535 * struct ieee80211_tim
537 * This structure refers to "Traffic Indication Map information element"
539 struct ieee80211_tim_ie {
543 /* variable size: 1 - 251 bytes */
545 } __attribute__ ((packed));
547 #define WLAN_SA_QUERY_TR_ID_LEN 2
549 struct ieee80211_mgmt {
550 __le16 frame_control;
559 __le16 auth_transaction;
561 /* possibly followed by Challenge text */
563 } __attribute__ ((packed)) auth;
566 } __attribute__ ((packed)) deauth;
569 __le16 listen_interval;
570 /* followed by SSID and Supported rates */
572 } __attribute__ ((packed)) assoc_req;
577 /* followed by Supported rates */
579 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
582 __le16 listen_interval;
584 /* followed by SSID and Supported rates */
586 } __attribute__ ((packed)) reassoc_req;
589 } __attribute__ ((packed)) disassoc;
594 /* followed by some of SSID, Supported rates,
595 * FH Params, DS Params, CF Params, IBSS Params, TIM */
597 } __attribute__ ((packed)) beacon;
599 /* only variable items: SSID, Supported rates */
601 } __attribute__ ((packed)) probe_req;
606 /* followed by some of SSID, Supported rates,
607 * FH Params, DS Params, CF Params, IBSS Params */
609 } __attribute__ ((packed)) probe_resp;
618 } __attribute__ ((packed)) wme_action;
623 struct ieee80211_channel_sw_ie sw_elem;
624 } __attribute__((packed)) chan_switch;
630 struct ieee80211_msrment_ie msr_elem;
631 } __attribute__((packed)) measurement;
637 __le16 start_seq_num;
638 } __attribute__((packed)) addba_req;
645 } __attribute__((packed)) addba_resp;
650 } __attribute__((packed)) delba;
653 /* capab_info for open and confirm,
657 /* Followed in plink_confirm by status
658 * code, AID and supported rates,
659 * and directly by supported rates in
660 * plink_open and plink_close
663 } __attribute__((packed)) plink_action;
667 } __attribute__((packed)) mesh_action;
670 u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
671 } __attribute__ ((packed)) sa_query;
673 } __attribute__ ((packed)) action;
675 } __attribute__ ((packed));
677 /* mgmt header + 1 byte category code */
678 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
681 /* Management MIC information element (IEEE 802.11w) */
682 struct ieee80211_mmie {
686 u8 sequence_number[6];
688 } __attribute__ ((packed));
691 struct ieee80211_rts {
692 __le16 frame_control;
696 } __attribute__ ((packed));
698 struct ieee80211_cts {
699 __le16 frame_control;
702 } __attribute__ ((packed));
704 struct ieee80211_pspoll {
705 __le16 frame_control;
709 } __attribute__ ((packed));
712 * struct ieee80211_bar - HT Block Ack Request
714 * This structure refers to "HT BlockAckReq" as
715 * described in 802.11n draft section 7.2.1.7.1
717 struct ieee80211_bar {
718 __le16 frame_control;
723 __le16 start_seq_num;
724 } __attribute__((packed));
726 /* 802.11 BAR control masks */
727 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000
728 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
731 #define IEEE80211_HT_MCS_MASK_LEN 10
734 * struct ieee80211_mcs_info - MCS information
736 * @rx_highest: highest supported RX rate
737 * @tx_params: TX parameters
739 struct ieee80211_mcs_info {
740 u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
744 } __attribute__((packed));
746 /* 802.11n HT capability MSC set */
747 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff
748 #define IEEE80211_HT_MCS_TX_DEFINED 0x01
749 #define IEEE80211_HT_MCS_TX_RX_DIFF 0x02
750 /* value 0 == 1 stream etc */
751 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK 0x0C
752 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT 2
753 #define IEEE80211_HT_MCS_TX_MAX_STREAMS 4
754 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION 0x10
757 * 802.11n D5.0 20.3.5 / 20.6 says:
758 * - indices 0 to 7 and 32 are single spatial stream
759 * - 8 to 31 are multiple spatial streams using equal modulation
760 * [8..15 for two streams, 16..23 for three and 24..31 for four]
761 * - remainder are multiple spatial streams using unequal modulation
763 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
764 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
765 (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
768 * struct ieee80211_ht_cap - HT capabilities
770 * This structure is the "HT capabilities element" as
771 * described in 802.11n D5.0 7.3.2.57
773 struct ieee80211_ht_cap {
775 u8 ampdu_params_info;
777 /* 16 bytes MCS information */
778 struct ieee80211_mcs_info mcs;
780 __le16 extended_ht_cap_info;
781 __le32 tx_BF_cap_info;
782 u8 antenna_selection_info;
783 } __attribute__ ((packed));
785 /* 802.11n HT capabilities masks (for cap_info) */
786 #define IEEE80211_HT_CAP_LDPC_CODING 0x0001
787 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40 0x0002
788 #define IEEE80211_HT_CAP_SM_PS 0x000C
789 #define IEEE80211_HT_CAP_GRN_FLD 0x0010
790 #define IEEE80211_HT_CAP_SGI_20 0x0020
791 #define IEEE80211_HT_CAP_SGI_40 0x0040
792 #define IEEE80211_HT_CAP_TX_STBC 0x0080
793 #define IEEE80211_HT_CAP_RX_STBC 0x0300
794 #define IEEE80211_HT_CAP_DELAY_BA 0x0400
795 #define IEEE80211_HT_CAP_MAX_AMSDU 0x0800
796 #define IEEE80211_HT_CAP_DSSSCCK40 0x1000
797 #define IEEE80211_HT_CAP_PSMP_SUPPORT 0x2000
798 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT 0x4000
799 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT 0x8000
801 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
802 #define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03
803 #define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C
806 * struct ieee80211_ht_info - HT information
808 * This structure is the "HT information element" as
809 * described in 802.11n D5.0 7.3.2.58
811 struct ieee80211_ht_info {
814 __le16 operation_mode;
817 } __attribute__ ((packed));
820 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03
821 #define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00
822 #define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01
823 #define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03
824 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04
825 #define IEEE80211_HT_PARAM_RIFS_MODE 0x08
826 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT 0x10
827 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN 0xE0
829 /* for operation_mode */
830 #define IEEE80211_HT_OP_MODE_PROTECTION 0x0003
831 #define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0
832 #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1
833 #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2
834 #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3
835 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004
836 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010
839 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040
840 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080
841 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100
842 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200
843 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400
844 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800
847 /* block-ack parameters */
848 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
849 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
850 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
851 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
852 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
855 * A-PMDU buffer sizes
856 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
858 #define IEEE80211_MIN_AMPDU_BUF 0x8
859 #define IEEE80211_MAX_AMPDU_BUF 0x40
862 /* Spatial Multiplexing Power Save Modes */
863 #define WLAN_HT_CAP_SM_PS_STATIC 0
864 #define WLAN_HT_CAP_SM_PS_DYNAMIC 1
865 #define WLAN_HT_CAP_SM_PS_INVALID 2
866 #define WLAN_HT_CAP_SM_PS_DISABLED 3
868 /* Authentication algorithms */
869 #define WLAN_AUTH_OPEN 0
870 #define WLAN_AUTH_SHARED_KEY 1
871 #define WLAN_AUTH_FT 2
872 #define WLAN_AUTH_LEAP 128
874 #define WLAN_AUTH_CHALLENGE_LEN 128
876 #define WLAN_CAPABILITY_ESS (1<<0)
877 #define WLAN_CAPABILITY_IBSS (1<<1)
878 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
879 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
880 #define WLAN_CAPABILITY_PRIVACY (1<<4)
881 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
882 #define WLAN_CAPABILITY_PBCC (1<<6)
883 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
886 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
887 #define WLAN_CAPABILITY_QOS (1<<9)
888 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
889 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
891 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0)
892 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1)
893 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2)
895 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0
896 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1
897 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2
900 /* 802.11g ERP information element */
901 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
902 #define WLAN_ERP_USE_PROTECTION (1<<1)
903 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
905 /* WLAN_ERP_BARKER_PREAMBLE values */
907 WLAN_ERP_PREAMBLE_SHORT = 0,
908 WLAN_ERP_PREAMBLE_LONG = 1,
912 enum ieee80211_statuscode {
913 WLAN_STATUS_SUCCESS = 0,
914 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
915 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
916 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
917 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
918 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
919 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
920 WLAN_STATUS_CHALLENGE_FAIL = 15,
921 WLAN_STATUS_AUTH_TIMEOUT = 16,
922 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
923 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
925 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
926 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
927 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
929 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
930 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
931 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
933 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
934 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
936 WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
937 WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
939 WLAN_STATUS_INVALID_IE = 40,
940 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
941 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
942 WLAN_STATUS_INVALID_AKMP = 43,
943 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
944 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
945 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
947 WLAN_STATUS_UNSPECIFIED_QOS = 32,
948 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
949 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
950 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
951 WLAN_STATUS_REQUEST_DECLINED = 37,
952 WLAN_STATUS_INVALID_QOS_PARAM = 38,
953 WLAN_STATUS_CHANGE_TSPEC = 39,
954 WLAN_STATUS_WAIT_TS_DELAY = 47,
955 WLAN_STATUS_NO_DIRECT_LINK = 48,
956 WLAN_STATUS_STA_NOT_PRESENT = 49,
957 WLAN_STATUS_STA_NOT_QSTA = 50,
962 enum ieee80211_reasoncode {
963 WLAN_REASON_UNSPECIFIED = 1,
964 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
965 WLAN_REASON_DEAUTH_LEAVING = 3,
966 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
967 WLAN_REASON_DISASSOC_AP_BUSY = 5,
968 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
969 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
970 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
971 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
973 WLAN_REASON_DISASSOC_BAD_POWER = 10,
974 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
976 WLAN_REASON_INVALID_IE = 13,
977 WLAN_REASON_MIC_FAILURE = 14,
978 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
979 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
980 WLAN_REASON_IE_DIFFERENT = 17,
981 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
982 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
983 WLAN_REASON_INVALID_AKMP = 20,
984 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
985 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
986 WLAN_REASON_IEEE8021X_FAILED = 23,
987 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
989 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
990 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
991 WLAN_REASON_DISASSOC_LOW_ACK = 34,
992 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
993 WLAN_REASON_QSTA_LEAVE_QBSS = 36,
994 WLAN_REASON_QSTA_NOT_USE = 37,
995 WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
996 WLAN_REASON_QSTA_TIMEOUT = 39,
997 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1001 /* Information Element IDs */
1002 enum ieee80211_eid {
1004 WLAN_EID_SUPP_RATES = 1,
1005 WLAN_EID_FH_PARAMS = 2,
1006 WLAN_EID_DS_PARAMS = 3,
1007 WLAN_EID_CF_PARAMS = 4,
1009 WLAN_EID_IBSS_PARAMS = 6,
1010 WLAN_EID_CHALLENGE = 16,
1012 WLAN_EID_COUNTRY = 7,
1013 WLAN_EID_HP_PARAMS = 8,
1014 WLAN_EID_HP_TABLE = 9,
1015 WLAN_EID_REQUEST = 10,
1017 WLAN_EID_QBSS_LOAD = 11,
1018 WLAN_EID_EDCA_PARAM_SET = 12,
1019 WLAN_EID_TSPEC = 13,
1020 WLAN_EID_TCLAS = 14,
1021 WLAN_EID_SCHEDULE = 15,
1022 WLAN_EID_TS_DELAY = 43,
1023 WLAN_EID_TCLAS_PROCESSING = 44,
1024 WLAN_EID_QOS_CAPA = 46,
1027 * All mesh EID numbers are pending IEEE 802.11 ANA approval.
1028 * The numbers have been incremented from those suggested in
1029 * 802.11s/D2.0 so that MESH_CONFIG does not conflict with
1032 WLAN_EID_MESH_CONFIG = 51,
1033 WLAN_EID_MESH_ID = 52,
1034 WLAN_EID_PEER_LINK = 55,
1039 WLAN_EID_PWR_CONSTRAINT = 32,
1040 WLAN_EID_PWR_CAPABILITY = 33,
1041 WLAN_EID_TPC_REQUEST = 34,
1042 WLAN_EID_TPC_REPORT = 35,
1043 WLAN_EID_SUPPORTED_CHANNELS = 36,
1044 WLAN_EID_CHANNEL_SWITCH = 37,
1045 WLAN_EID_MEASURE_REQUEST = 38,
1046 WLAN_EID_MEASURE_REPORT = 39,
1047 WLAN_EID_QUIET = 40,
1048 WLAN_EID_IBSS_DFS = 41,
1050 WLAN_EID_ERP_INFO = 42,
1051 WLAN_EID_EXT_SUPP_RATES = 50,
1053 WLAN_EID_HT_CAPABILITY = 45,
1054 WLAN_EID_HT_INFORMATION = 61,
1057 WLAN_EID_TIMEOUT_INTERVAL = 56,
1058 WLAN_EID_MMIE = 76 /* 802.11w */,
1060 WLAN_EID_GENERIC = 221,
1061 WLAN_EID_VENDOR_SPECIFIC = 221,
1062 WLAN_EID_QOS_PARAMETER = 222
1065 /* Action category code */
1066 enum ieee80211_category {
1067 WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1068 WLAN_CATEGORY_QOS = 1,
1069 WLAN_CATEGORY_DLS = 2,
1070 WLAN_CATEGORY_BACK = 3,
1071 WLAN_CATEGORY_PUBLIC = 4,
1072 WLAN_CATEGORY_HT = 7,
1073 WLAN_CATEGORY_SA_QUERY = 8,
1074 WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1075 WLAN_CATEGORY_WMM = 17,
1076 WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1077 WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1080 /* SPECTRUM_MGMT action code */
1081 enum ieee80211_spectrum_mgmt_actioncode {
1082 WLAN_ACTION_SPCT_MSR_REQ = 0,
1083 WLAN_ACTION_SPCT_MSR_RPRT = 1,
1084 WLAN_ACTION_SPCT_TPC_REQ = 2,
1085 WLAN_ACTION_SPCT_TPC_RPRT = 3,
1086 WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1089 /* Security key length */
1090 enum ieee80211_key_len {
1091 WLAN_KEY_LEN_WEP40 = 5,
1092 WLAN_KEY_LEN_WEP104 = 13,
1093 WLAN_KEY_LEN_CCMP = 16,
1094 WLAN_KEY_LEN_TKIP = 32,
1095 WLAN_KEY_LEN_AES_CMAC = 16,
1099 * IEEE 802.11-2007 7.3.2.9 Country information element
1101 * Minimum length is 8 octets, ie len must be evenly
1105 /* Although the spec says 8 I'm seeing 6 in practice */
1106 #define IEEE80211_COUNTRY_IE_MIN_LEN 6
1109 * For regulatory extension stuff see IEEE 802.11-2007
1110 * Annex I (page 1141) and Annex J (page 1147). Also
1113 * When dot11RegulatoryClassesRequired is true and the
1114 * first_channel/reg_extension_id is >= 201 then the IE
1115 * compromises of the 'ext' struct represented below:
1117 * - Regulatory extension ID - when generating IE this just needs
1118 * to be monotonically increasing for each triplet passed in
1120 * - Regulatory class - index into set of rules
1121 * - Coverage class - index into air propagation time (Table 7-27),
1122 * in microseconds, you can compute the air propagation time from
1123 * the index by multiplying by 3, so index 10 yields a propagation
1124 * of 10 us. Valid values are 0-31, values 32-255 are not defined
1125 * yet. A value of 0 inicates air propagation of <= 1 us.
1127 * See also Table I.2 for Emission limit sets and table
1128 * I.3 for Behavior limit sets. Table J.1 indicates how to map
1129 * a reg_class to an emission limit set and behavior limit set.
1131 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1134 * Channels numbers in the IE must be monotonically increasing
1135 * if dot11RegulatoryClassesRequired is not true.
1137 * If dot11RegulatoryClassesRequired is true consecutive
1138 * subband triplets following a regulatory triplet shall
1139 * have monotonically increasing first_channel number fields.
1141 * Channel numbers shall not overlap.
1143 * Note that max_power is signed.
1145 struct ieee80211_country_ie_triplet {
1151 } __attribute__ ((packed)) chans;
1153 u8 reg_extension_id;
1156 } __attribute__ ((packed)) ext;
1158 } __attribute__ ((packed));
1160 enum ieee80211_timeout_interval_type {
1161 WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1162 WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1163 WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1166 /* BACK action code */
1167 enum ieee80211_back_actioncode {
1168 WLAN_ACTION_ADDBA_REQ = 0,
1169 WLAN_ACTION_ADDBA_RESP = 1,
1170 WLAN_ACTION_DELBA = 2,
1173 /* BACK (block-ack) parties */
1174 enum ieee80211_back_parties {
1175 WLAN_BACK_RECIPIENT = 0,
1176 WLAN_BACK_INITIATOR = 1,
1177 WLAN_BACK_TIMER = 2,
1180 /* SA Query action */
1181 enum ieee80211_sa_query_action {
1182 WLAN_ACTION_SA_QUERY_REQUEST = 0,
1183 WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1187 /* A-MSDU 802.11n */
1188 #define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
1190 /* cipher suite selectors */
1191 #define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00
1192 #define WLAN_CIPHER_SUITE_WEP40 0x000FAC01
1193 #define WLAN_CIPHER_SUITE_TKIP 0x000FAC02
1194 /* reserved: 0x000FAC03 */
1195 #define WLAN_CIPHER_SUITE_CCMP 0x000FAC04
1196 #define WLAN_CIPHER_SUITE_WEP104 0x000FAC05
1197 #define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06
1199 #define WLAN_MAX_KEY_LEN 32
1202 * ieee80211_get_qos_ctl - get pointer to qos control bytes
1205 * The qos ctrl bytes come after the frame_control, duration, seq_num
1206 * and 3 or 4 addresses of length ETH_ALEN.
1207 * 3 addr: 2 + 2 + 2 + 3*6 = 24
1208 * 4 addr: 2 + 2 + 2 + 4*6 = 30
1210 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1212 if (ieee80211_has_a4(hdr->frame_control))
1213 return (u8 *)hdr + 30;
1215 return (u8 *)hdr + 24;
1219 * ieee80211_get_SA - get pointer to SA
1222 * Given an 802.11 frame, this function returns the offset
1223 * to the source address (SA). It does not verify that the
1224 * header is long enough to contain the address, and the
1225 * header must be long enough to contain the frame control
1228 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1230 if (ieee80211_has_a4(hdr->frame_control))
1232 if (ieee80211_has_fromds(hdr->frame_control))
1238 * ieee80211_get_DA - get pointer to DA
1241 * Given an 802.11 frame, this function returns the offset
1242 * to the destination address (DA). It does not verify that
1243 * the header is long enough to contain the address, and the
1244 * header must be long enough to contain the frame control
1247 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1249 if (ieee80211_has_tods(hdr->frame_control))
1256 * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1257 * @hdr: the frame (buffer must include at least the first octet of payload)
1259 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1261 if (ieee80211_is_disassoc(hdr->frame_control) ||
1262 ieee80211_is_deauth(hdr->frame_control))
1265 if (ieee80211_is_action(hdr->frame_control)) {
1269 * Action frames, excluding Public Action frames, are Robust
1270 * Management Frames. However, if we are looking at a Protected
1271 * frame, skip the check since the data may be encrypted and
1272 * the frame has already been found to be a Robust Management
1273 * Frame (by the other end).
1275 if (ieee80211_has_protected(hdr->frame_control))
1277 category = ((u8 *) hdr) + 24;
1278 return *category != WLAN_CATEGORY_PUBLIC &&
1279 *category != WLAN_CATEGORY_HT &&
1280 *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1287 * ieee80211_fhss_chan_to_freq - get channel frequency
1288 * @channel: the FHSS channel
1290 * Convert IEEE802.11 FHSS channel to frequency (MHz)
1291 * Ref IEEE 802.11-2007 section 14.6
1293 static inline int ieee80211_fhss_chan_to_freq(int channel)
1295 if ((channel > 1) && (channel < 96))
1296 return channel + 2400;
1302 * ieee80211_freq_to_fhss_chan - get channel
1303 * @freq: the channels frequency
1305 * Convert frequency (MHz) to IEEE802.11 FHSS channel
1306 * Ref IEEE 802.11-2007 section 14.6
1308 static inline int ieee80211_freq_to_fhss_chan(int freq)
1310 if ((freq > 2401) && (freq < 2496))
1317 * ieee80211_dsss_chan_to_freq - get channel center frequency
1318 * @channel: the DSSS channel
1320 * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1321 * Ref IEEE 802.11-2007 section 15.6
1323 static inline int ieee80211_dsss_chan_to_freq(int channel)
1325 if ((channel > 0) && (channel < 14))
1326 return 2407 + (channel * 5);
1327 else if (channel == 14)
1334 * ieee80211_freq_to_dsss_chan - get channel
1335 * @freq: the frequency
1337 * Convert frequency (MHz) to IEEE802.11 DSSS channel
1338 * Ref IEEE 802.11-2007 section 15.6
1340 * This routine selects the channel with the closest center frequency.
1342 static inline int ieee80211_freq_to_dsss_chan(int freq)
1344 if ((freq >= 2410) && (freq < 2475))
1345 return (freq - 2405) / 5;
1346 else if ((freq >= 2482) && (freq < 2487))
1352 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1353 * Ref IEEE 802.11-2007 section 18.4.6.2
1355 * The channels and frequencies are the same as those defined for DSSS
1357 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1358 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1360 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1361 * Ref IEEE 802.11-2007 section 19.4.2
1363 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1364 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1367 * ieee80211_ofdm_chan_to_freq - get channel center frequency
1368 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1369 * @channel: the OFDM channel
1371 * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1372 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1374 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1376 if ((channel > 0) && (channel <= 200) &&
1378 return s_freq + (channel * 5);
1384 * ieee80211_freq_to_ofdm_channel - get channel
1385 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1386 * @freq: the frequency
1388 * Convert frequency (MHz) to IEEE802.11 OFDM channel
1389 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1391 * This routine selects the channel with the closest center frequency.
1393 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1395 if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1397 return (freq + 2 - s_freq) / 5;
1403 * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1406 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1412 * ieee80211_check_tim - check if AID bit is set in TIM
1414 * @tim_len: length of the TIM IE
1415 * @aid: the AID to look for
1417 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1418 u8 tim_len, u16 aid)
1421 u8 index, indexn1, indexn2;
1423 if (unlikely(!tim || tim_len < sizeof(*tim)))
1428 mask = 1 << (aid & 7);
1430 indexn1 = tim->bitmap_ctrl & 0xfe;
1431 indexn2 = tim_len + indexn1 - 4;
1433 if (index < indexn1 || index > indexn2)
1438 return !!(tim->virtual_map[index] & mask);
1441 #endif /* LINUX_IEEE80211_H */