xref: /freebsd/sys/net80211/ieee80211_var.h (revision 2a664c03e55254b0f3b32dcdfc78179c0a57a8d2)
1 /*-
2  * Copyright (c) 2001 Atsushi Onoe
3  * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 #ifndef _NET80211_IEEE80211_VAR_H_
29 #define _NET80211_IEEE80211_VAR_H_
30 
31 /*
32  * Definitions for IEEE 802.11 drivers.
33  */
34 /* NB: portability glue must go first */
35 #if defined(__NetBSD__)
36 #include <net80211/ieee80211_netbsd.h>
37 #elif defined(__FreeBSD__)
38 #include <net80211/ieee80211_freebsd.h>
39 #elif defined(__linux__)
40 #include <net80211/ieee80211_linux.h>
41 #else
42 #error	"No support for your operating system!"
43 #endif
44 
45 #include <net80211/_ieee80211.h>
46 #include <net80211/ieee80211.h>
47 #include <net80211/ieee80211_ageq.h>
48 #include <net80211/ieee80211_crypto.h>
49 #include <net80211/ieee80211_dfs.h>
50 #include <net80211/ieee80211_ioctl.h>		/* for ieee80211_stats */
51 #include <net80211/ieee80211_phy.h>
52 #include <net80211/ieee80211_power.h>
53 #include <net80211/ieee80211_node.h>
54 #include <net80211/ieee80211_proto.h>
55 #include <net80211/ieee80211_radiotap.h>
56 #include <net80211/ieee80211_scan.h>
57 
58 #define	IEEE80211_TXPOWER_MAX	100	/* .5 dbM (XXX units?) */
59 #define	IEEE80211_TXPOWER_MIN	0	/* kill radio */
60 
61 #define	IEEE80211_DTIM_DEFAULT	1	/* default DTIM period */
62 #define	IEEE80211_BINTVAL_DEFAULT 100	/* default beacon interval (TU's) */
63 
64 #define	IEEE80211_BMISS_MAX	2	/* maximum consecutive bmiss allowed */
65 #define	IEEE80211_HWBMISS_DEFAULT 7	/* h/w bmiss threshold (beacons) */
66 
67 #define	IEEE80211_BGSCAN_INTVAL_MIN	15	/* min bg scan intvl (secs) */
68 #define	IEEE80211_BGSCAN_INTVAL_DEFAULT	(5*60)	/* default bg scan intvl */
69 
70 #define	IEEE80211_BGSCAN_IDLE_MIN	100	/* min idle time (ms) */
71 #define	IEEE80211_BGSCAN_IDLE_DEFAULT	250	/* default idle time (ms) */
72 
73 #define	IEEE80211_SCAN_VALID_MIN	10	/* min scan valid time (secs) */
74 #define	IEEE80211_SCAN_VALID_DEFAULT	60	/* default scan valid time */
75 
76 #define	IEEE80211_PS_SLEEP	0x1	/* STA is in power saving mode */
77 #define	IEEE80211_PS_MAX_QUEUE	50	/* maximum saved packets */
78 
79 #define	IEEE80211_FIXED_RATE_NONE	0xff
80 #define	IEEE80211_TXMAX_DEFAULT		6	/* default ucast max retries */
81 
82 #define	IEEE80211_RTS_DEFAULT		IEEE80211_RTS_MAX
83 #define	IEEE80211_FRAG_DEFAULT		IEEE80211_FRAG_MAX
84 
85 #define	IEEE80211_MS_TO_TU(x)	(((x) * 1000) / 1024)
86 #define	IEEE80211_TU_TO_MS(x)	(((x) * 1024) / 1000)
87 #define	IEEE80211_TU_TO_TICKS(x)(((x) * 1024 * hz) / (1000 * 1000))
88 
89 /*
90  * 802.11 control state is split into a common portion that maps
91  * 1-1 to a physical device and one or more "Virtual AP's" (VAP)
92  * that are bound to an ieee80211com instance and share a single
93  * underlying device.  Each VAP has a corresponding OS device
94  * entity through which traffic flows and that applications use
95  * for issuing ioctls, etc.
96  */
97 
98 /*
99  * Data common to one or more virtual AP's.  State shared by
100  * the underlying device and the net80211 layer is exposed here;
101  * e.g. device-specific callbacks.
102  */
103 struct ieee80211vap;
104 typedef void (*ieee80211vap_attach)(struct ieee80211vap *);
105 
106 struct ieee80211_appie {
107 	uint16_t		ie_len;		/* size of ie_data */
108 	uint8_t			ie_data[];	/* user-specified IE's */
109 };
110 
111 struct ieee80211_tdma_param;
112 struct ieee80211_rate_table;
113 struct ieee80211_tx_ampdu;
114 struct ieee80211_rx_ampdu;
115 struct ieee80211_superg;
116 struct ieee80211_frame;
117 
118 struct ieee80211com {
119 	struct ifnet		*ic_ifp;	/* associated device */
120 	ieee80211_com_lock_t	ic_comlock;	/* state update lock */
121 	TAILQ_HEAD(, ieee80211vap) ic_vaps;	/* list of vap instances */
122 	int			ic_headroom;	/* driver tx headroom needs */
123 	enum ieee80211_phytype	ic_phytype;	/* XXX wrong for multi-mode */
124 	enum ieee80211_opmode	ic_opmode;	/* operation mode */
125 	struct ifmedia		ic_media;	/* interface media config */
126 	struct callout		ic_inact;	/* inactivity processing */
127 	struct taskqueue	*ic_tq;		/* deferred state thread */
128 	struct task		ic_parent_task;	/* deferred parent processing */
129 	struct task		ic_promisc_task;/* deferred promisc update */
130 	struct task		ic_mcast_task;	/* deferred mcast update */
131 	struct task		ic_chan_task;	/* deferred channel change */
132 	struct task		ic_bmiss_task;	/* deferred beacon miss hndlr */
133 	struct task		ic_chw_task;	/* deferred HT CHW update */
134 
135 	uint32_t		ic_flags;	/* state flags */
136 	uint32_t		ic_flags_ext;	/* extended state flags */
137 	uint32_t		ic_flags_ht;	/* HT state flags */
138 	uint32_t		ic_flags_ven;	/* vendor state flags */
139 	uint32_t		ic_caps;	/* capabilities */
140 	uint32_t		ic_htcaps;	/* HT capabilities */
141 	uint32_t		ic_htextcaps;	/* HT extended capabilities */
142 	uint32_t		ic_cryptocaps;	/* crypto capabilities */
143 	uint8_t			ic_modecaps[2];	/* set of mode capabilities */
144 	uint8_t			ic_promisc;	/* vap's needing promisc mode */
145 	uint8_t			ic_allmulti;	/* vap's needing all multicast*/
146 	uint8_t			ic_nrunning;	/* vap's marked running */
147 	uint8_t			ic_curmode;	/* current mode */
148 	uint16_t		ic_bintval;	/* beacon interval */
149 	uint16_t		ic_lintval;	/* listen interval */
150 	uint16_t		ic_holdover;	/* PM hold over duration */
151 	uint16_t		ic_txpowlimit;	/* global tx power limit */
152 	struct ieee80211_rateset ic_sup_rates[IEEE80211_MODE_MAX];
153 
154 	/*
155 	 * Channel state:
156 	 *
157 	 * ic_channels is the set of available channels for the device;
158 	 *    it is setup by the driver
159 	 * ic_nchans is the number of valid entries in ic_channels
160 	 * ic_chan_avail is a bit vector of these channels used to check
161 	 *    whether a channel is available w/o searching the channel table.
162 	 * ic_chan_active is a (potentially) constrained subset of
163 	 *    ic_chan_avail that reflects any mode setting or user-specified
164 	 *    limit on the set of channels to use/scan
165 	 * ic_curchan is the current channel the device is set to; it may
166 	 *    be different from ic_bsschan when we are off-channel scanning
167 	 *    or otherwise doing background work
168 	 * ic_bsschan is the channel selected for operation; it may
169 	 *    be undefined (IEEE80211_CHAN_ANYC)
170 	 * ic_prevchan is a cached ``previous channel'' used to optimize
171 	 *    lookups when switching back+forth between two channels
172 	 *    (e.g. for dynamic turbo)
173 	 */
174 	int			ic_nchans;	/* # entries in ic_channels */
175 	struct ieee80211_channel ic_channels[IEEE80211_CHAN_MAX];
176 	uint8_t			ic_chan_avail[IEEE80211_CHAN_BYTES];
177 	uint8_t			ic_chan_active[IEEE80211_CHAN_BYTES];
178 	uint8_t			ic_chan_scan[IEEE80211_CHAN_BYTES];
179 	struct ieee80211_channel *ic_curchan;	/* current channel */
180 	const struct ieee80211_rate_table *ic_rt; /* table for ic_curchan */
181 	struct ieee80211_channel *ic_bsschan;	/* bss channel */
182 	struct ieee80211_channel *ic_prevchan;	/* previous channel */
183 	struct ieee80211_regdomain ic_regdomain;/* regulatory data */
184 	struct ieee80211_appie	*ic_countryie;	/* calculated country ie */
185 	struct ieee80211_channel *ic_countryie_chan;
186 
187 	/* 802.11h/DFS state */
188 	struct ieee80211_channel *ic_csa_newchan;/* channel for doing CSA */
189 	short			ic_csa_mode;	/* mode for doing CSA */
190 	short			ic_csa_count;	/* count for doing CSA */
191 	struct ieee80211_dfs_state ic_dfs;	/* DFS state */
192 
193 	struct ieee80211_scan_state *ic_scan;	/* scan state */
194 	int			ic_lastdata;	/* time of last data frame */
195 	int			ic_lastscan;	/* time last scan completed */
196 
197 	/* NB: this is the union of all vap stations/neighbors */
198 	int			ic_max_keyix;	/* max h/w key index */
199 	struct ieee80211_node_table ic_sta;	/* stations/neighbors */
200 	struct ieee80211_ageq	ic_stageq;	/* frame staging queue */
201 	uint32_t		ic_hash_key;	/* random key for mac hash */
202 
203 	/* XXX multi-bss: split out common/vap parts */
204 	struct ieee80211_wme_state ic_wme;	/* WME/WMM state */
205 
206 	/* XXX multi-bss: can per-vap be done/make sense? */
207 	enum ieee80211_protmode	ic_protmode;	/* 802.11g protection mode */
208 	uint16_t		ic_nonerpsta;	/* # non-ERP stations */
209 	uint16_t		ic_longslotsta;	/* # long slot time stations */
210 	uint16_t		ic_sta_assoc;	/* stations associated */
211 	uint16_t		ic_ht_sta_assoc;/* HT stations associated */
212 	uint16_t		ic_ht40_sta_assoc;/* HT40 stations associated */
213 	uint8_t			ic_curhtprotmode;/* HTINFO bss state */
214 	enum ieee80211_protmode	ic_htprotmode;	/* HT protection mode */
215 	int			ic_lastnonerp;	/* last time non-ERP sta noted*/
216 	int			ic_lastnonht;	/* last time non-HT sta noted */
217 	uint8_t			ic_rxstream;    /* # RX streams */
218 	uint8_t			ic_txstream;    /* # TX streams */
219 
220 	/* optional state for Atheros SuperG protocol extensions */
221 	struct ieee80211_superg	*ic_superg;
222 
223 	/* radiotap handling */
224 	struct ieee80211_radiotap_header *ic_th;/* tx radiotap headers */
225 	void			*ic_txchan;	/* channel state in ic_th */
226 	struct ieee80211_radiotap_header *ic_rh;/* rx radiotap headers */
227 	void			*ic_rxchan;	/* channel state in ic_rh */
228 	int			ic_montaps;	/* active monitor mode taps */
229 
230 	/* virtual ap create/delete */
231 	struct ieee80211vap*	(*ic_vap_create)(struct ieee80211com *,
232 				    const char [IFNAMSIZ], int,
233 				    enum ieee80211_opmode, int,
234 				    const uint8_t [IEEE80211_ADDR_LEN],
235 				    const uint8_t [IEEE80211_ADDR_LEN]);
236 	void			(*ic_vap_delete)(struct ieee80211vap *);
237 	/* operating mode attachment */
238 	ieee80211vap_attach	ic_vattach[IEEE80211_OPMODE_MAX];
239 	/* return hardware/radio capabilities */
240 	void			(*ic_getradiocaps)(struct ieee80211com *,
241 				    int, int *, struct ieee80211_channel []);
242 	/* check and/or prepare regdomain state change */
243 	int			(*ic_setregdomain)(struct ieee80211com *,
244 				    struct ieee80211_regdomain *,
245 				    int, struct ieee80211_channel []);
246 
247 	int			(*ic_set_quiet)(struct ieee80211_node *,
248 				    u_int8_t *quiet_elm);
249 
250 	/* send/recv 802.11 management frame */
251 	int			(*ic_send_mgmt)(struct ieee80211_node *,
252 				     int, int);
253 	/* send raw 802.11 frame */
254 	int			(*ic_raw_xmit)(struct ieee80211_node *,
255 				    struct mbuf *,
256 				    const struct ieee80211_bpf_params *);
257 	/* update device state for 802.11 slot time change */
258 	void			(*ic_updateslot)(struct ifnet *);
259 	/* handle multicast state changes */
260 	void			(*ic_update_mcast)(struct ifnet *);
261 	/* handle promiscuous mode changes */
262 	void			(*ic_update_promisc)(struct ifnet *);
263 	/* new station association callback/notification */
264 	void			(*ic_newassoc)(struct ieee80211_node *, int);
265 	/* TDMA update notification */
266 	void			(*ic_tdma_update)(struct ieee80211_node *,
267 				    const struct ieee80211_tdma_param *, int);
268 	/* node state management */
269 	struct ieee80211_node*	(*ic_node_alloc)(struct ieee80211vap *,
270 				    const uint8_t [IEEE80211_ADDR_LEN]);
271 	void			(*ic_node_free)(struct ieee80211_node *);
272 	void			(*ic_node_cleanup)(struct ieee80211_node *);
273 	void			(*ic_node_age)(struct ieee80211_node *);
274 	void			(*ic_node_drain)(struct ieee80211_node *);
275 	int8_t			(*ic_node_getrssi)(const struct ieee80211_node*);
276 	void			(*ic_node_getsignal)(const struct ieee80211_node*,
277 				    int8_t *, int8_t *);
278 	void			(*ic_node_getmimoinfo)(
279 				    const struct ieee80211_node*,
280 				    struct ieee80211_mimo_info *);
281 	/* scanning support */
282 	void			(*ic_scan_start)(struct ieee80211com *);
283 	void			(*ic_scan_end)(struct ieee80211com *);
284 	void			(*ic_set_channel)(struct ieee80211com *);
285 	void			(*ic_scan_curchan)(struct ieee80211_scan_state *,
286 				    unsigned long);
287 	void			(*ic_scan_mindwell)(struct ieee80211_scan_state *);
288 
289 	/*
290 	 * 802.11n ADDBA support.  A simple/generic implementation
291 	 * of A-MPDU tx aggregation is provided; the driver may
292 	 * override these methods to provide their own support.
293 	 * A-MPDU rx re-ordering happens automatically if the
294 	 * driver passes out-of-order frames to ieee80211_input
295 	 * from an assocated HT station.
296 	 */
297 	int			(*ic_recv_action)(struct ieee80211_node *,
298 				    const struct ieee80211_frame *,
299 				    const uint8_t *frm, const uint8_t *efrm);
300 	int			(*ic_send_action)(struct ieee80211_node *,
301 				    int category, int action, void *);
302 	/* check if A-MPDU should be enabled this station+ac */
303 	int			(*ic_ampdu_enable)(struct ieee80211_node *,
304 				    struct ieee80211_tx_ampdu *);
305 	/* start/stop doing A-MPDU tx aggregation for a station */
306 	int			(*ic_addba_request)(struct ieee80211_node *,
307 				    struct ieee80211_tx_ampdu *,
308 				    int dialogtoken, int baparamset,
309 				    int batimeout);
310 	int			(*ic_addba_response)(struct ieee80211_node *,
311 				    struct ieee80211_tx_ampdu *,
312 				    int status, int baparamset, int batimeout);
313 	void			(*ic_addba_stop)(struct ieee80211_node *,
314 				    struct ieee80211_tx_ampdu *);
315 	void			(*ic_addba_response_timeout)(struct ieee80211_node *,
316 				    struct ieee80211_tx_ampdu *);
317 	/* BAR response received */
318 	void			(*ic_bar_response)(struct ieee80211_node *,
319 				    struct ieee80211_tx_ampdu *, int status);
320 	/* start/stop doing A-MPDU rx processing for a station */
321 	int			(*ic_ampdu_rx_start)(struct ieee80211_node *,
322 				    struct ieee80211_rx_ampdu *, int baparamset,
323 				    int batimeout, int baseqctl);
324 	void			(*ic_ampdu_rx_stop)(struct ieee80211_node *,
325 				    struct ieee80211_rx_ampdu *);
326 
327 	/* The channel width has changed (20<->2040) */
328 	void			(*ic_update_chw)(struct ieee80211com *);
329 
330 	uint64_t		ic_spare[7];
331 };
332 
333 struct ieee80211_aclator;
334 struct ieee80211_tdma_state;
335 struct ieee80211_mesh_state;
336 struct ieee80211_hwmp_state;
337 
338 struct ieee80211vap {
339 	struct ifmedia		iv_media;	/* interface media config */
340 	struct ifnet		*iv_ifp;	/* associated device */
341 	struct bpf_if		*iv_rawbpf;	/* packet filter structure */
342 	struct sysctl_ctx_list	*iv_sysctl;	/* dynamic sysctl context */
343 	struct sysctl_oid	*iv_oid;	/* net.wlan.X sysctl oid */
344 
345 	TAILQ_ENTRY(ieee80211vap) iv_next;	/* list of vap instances */
346 	struct ieee80211com	*iv_ic;		/* back ptr to common state */
347 	uint32_t		iv_debug;	/* debug msg flags */
348 	struct ieee80211_stats	iv_stats;	/* statistics */
349 
350 	uint8_t			iv_myaddr[IEEE80211_ADDR_LEN];
351 	uint32_t		iv_flags;	/* state flags */
352 	uint32_t		iv_flags_ext;	/* extended state flags */
353 	uint32_t		iv_flags_ht;	/* HT state flags */
354 	uint32_t		iv_flags_ven;	/* vendor state flags */
355 	uint32_t		iv_caps;	/* capabilities */
356 	uint32_t		iv_htcaps;	/* HT capabilities */
357 	uint32_t		iv_htextcaps;	/* HT extended capabilities */
358 	enum ieee80211_opmode	iv_opmode;	/* operation mode */
359 	enum ieee80211_state	iv_state;	/* state machine state */
360 	enum ieee80211_state	iv_nstate;	/* pending state */
361 	int			iv_nstate_arg;	/* pending state arg */
362 	struct task		iv_nstate_task;	/* deferred state processing */
363 	struct task		iv_swbmiss_task;/* deferred iv_bmiss call */
364 	struct callout		iv_mgtsend;	/* mgmt frame response timer */
365 						/* inactivity timer settings */
366 	int			iv_inact_init;	/* setting for new station */
367 	int			iv_inact_auth;	/* auth but not assoc setting */
368 	int			iv_inact_run;	/* authorized setting */
369 	int			iv_inact_probe;	/* inactive probe time */
370 
371 	int			iv_des_nssid;	/* # desired ssids */
372 	struct ieee80211_scan_ssid iv_des_ssid[1];/* desired ssid table */
373 	uint8_t			iv_des_bssid[IEEE80211_ADDR_LEN];
374 	struct ieee80211_channel *iv_des_chan;	/* desired channel */
375 	uint16_t		iv_des_mode;	/* desired mode */
376 	int			iv_nicknamelen;	/* XXX junk */
377 	uint8_t			iv_nickname[IEEE80211_NWID_LEN];
378 	u_int			iv_bgscanidle;	/* bg scan idle threshold */
379 	u_int			iv_bgscanintvl;	/* bg scan min interval */
380 	u_int			iv_scanvalid;	/* scan cache valid threshold */
381 	u_int			iv_scanreq_duration;
382 	u_int			iv_scanreq_mindwell;
383 	u_int			iv_scanreq_maxdwell;
384 	uint16_t		iv_scanreq_flags;/* held scan request params */
385 	uint8_t			iv_scanreq_nssid;
386 	struct ieee80211_scan_ssid iv_scanreq_ssid[IEEE80211_SCAN_MAX_SSID];
387 	/* sta-mode roaming state */
388 	enum ieee80211_roamingmode iv_roaming;	/* roaming mode */
389 	struct ieee80211_roamparam iv_roamparms[IEEE80211_MODE_MAX];
390 
391 	uint8_t			iv_bmissthreshold;
392 	uint8_t			iv_bmiss_count;	/* current beacon miss count */
393 	int			iv_bmiss_max;	/* max bmiss before scan */
394 	uint16_t		iv_swbmiss_count;/* beacons in last period */
395 	uint16_t		iv_swbmiss_period;/* s/w bmiss period */
396 	struct callout		iv_swbmiss;	/* s/w beacon miss timer */
397 
398 	int			iv_ampdu_rxmax;	/* A-MPDU rx limit (bytes) */
399 	int			iv_ampdu_density;/* A-MPDU density */
400 	int			iv_ampdu_limit;	/* A-MPDU tx limit (bytes) */
401 	int			iv_amsdu_limit;	/* A-MSDU tx limit (bytes) */
402 	u_int			iv_ampdu_mintraffic[WME_NUM_AC];
403 
404 	uint32_t		*iv_aid_bitmap;	/* association id map */
405 	uint16_t		iv_max_aid;
406 	uint16_t		iv_sta_assoc;	/* stations associated */
407 	uint16_t		iv_ps_sta;	/* stations in power save */
408 	uint16_t		iv_ps_pending;	/* ps sta's w/ pending frames */
409 	uint16_t		iv_txseq;	/* mcast xmit seq# space */
410 	uint16_t		iv_tim_len;	/* ic_tim_bitmap size (bytes) */
411 	uint8_t			*iv_tim_bitmap;	/* power-save stations w/ data*/
412 	uint8_t			iv_dtim_period;	/* DTIM period */
413 	uint8_t			iv_dtim_count;	/* DTIM count from last bcn */
414 						/* set/unset aid pwrsav state */
415 	uint8_t			iv_quiet;	/* Quiet Element */
416 	uint8_t			iv_quiet_count;	/* constant count for Quiet Element */
417 	uint8_t			iv_quiet_count_value;	/* variable count for Quiet Element */
418 	uint8_t			iv_quiet_period;	/* period for Quiet Element */
419 	uint16_t		iv_quiet_duration;	/* duration for Quiet Element */
420 	uint16_t		iv_quiet_offset;	/* offset for Quiet Element */
421 	int			iv_csa_count;	/* count for doing CSA */
422 
423 	struct ieee80211_node	*iv_bss;	/* information for this node */
424 	struct ieee80211_txparam iv_txparms[IEEE80211_MODE_MAX];
425 	uint16_t		iv_rtsthreshold;
426 	uint16_t		iv_fragthreshold;
427 	int			iv_inact_timer;	/* inactivity timer wait */
428 	/* application-specified IE's to attach to mgt frames */
429 	struct ieee80211_appie	*iv_appie_beacon;
430 	struct ieee80211_appie	*iv_appie_probereq;
431 	struct ieee80211_appie	*iv_appie_proberesp;
432 	struct ieee80211_appie	*iv_appie_assocreq;
433 	struct ieee80211_appie	*iv_appie_assocresp;
434 	struct ieee80211_appie	*iv_appie_wpa;
435 	uint8_t			*iv_wpa_ie;
436 	uint8_t			*iv_rsn_ie;
437 	uint16_t		iv_max_keyix;	/* max h/w key index */
438 	ieee80211_keyix		iv_def_txkey;	/* default/group tx key index */
439 	struct ieee80211_key	iv_nw_keys[IEEE80211_WEP_NKID];
440 	int			(*iv_key_alloc)(struct ieee80211vap *,
441 				    struct ieee80211_key *,
442 				    ieee80211_keyix *, ieee80211_keyix *);
443 	int			(*iv_key_delete)(struct ieee80211vap *,
444 				    const struct ieee80211_key *);
445 	int			(*iv_key_set)(struct ieee80211vap *,
446 				    const struct ieee80211_key *,
447 				    const uint8_t mac[IEEE80211_ADDR_LEN]);
448 	void			(*iv_key_update_begin)(struct ieee80211vap *);
449 	void			(*iv_key_update_end)(struct ieee80211vap *);
450 
451 	const struct ieee80211_authenticator *iv_auth; /* authenticator glue */
452 	void			*iv_ec;		/* private auth state */
453 
454 	const struct ieee80211_aclator *iv_acl;	/* acl glue */
455 	void			*iv_as;		/* private aclator state */
456 
457 	const struct ieee80211_ratectl *iv_rate;
458 	void			*iv_rs;		/* private ratectl state */
459 
460 	struct ieee80211_tdma_state *iv_tdma;	/* tdma state */
461 	struct ieee80211_mesh_state *iv_mesh;	/* MBSS state */
462 	struct ieee80211_hwmp_state *iv_hwmp;	/* HWMP state */
463 
464 	/* operate-mode detach hook */
465 	void			(*iv_opdetach)(struct ieee80211vap *);
466 	/* receive processing */
467 	int			(*iv_input)(struct ieee80211_node *,
468 				    struct mbuf *, int, int);
469 	void			(*iv_recv_mgmt)(struct ieee80211_node *,
470 				    struct mbuf *, int, int, int);
471 	void			(*iv_recv_ctl)(struct ieee80211_node *,
472 				    struct mbuf *, int);
473 	void			(*iv_deliver_data)(struct ieee80211vap *,
474 				    struct ieee80211_node *, struct mbuf *);
475 #if 0
476 	/* send processing */
477 	int			(*iv_send_mgmt)(struct ieee80211_node *,
478 				     int, int);
479 #endif
480 	/* beacon miss processing */
481 	void			(*iv_bmiss)(struct ieee80211vap *);
482 	/* reset device state after 802.11 parameter/state change */
483 	int			(*iv_reset)(struct ieee80211vap *, u_long);
484 	/* [schedule] beacon frame update */
485 	void			(*iv_update_beacon)(struct ieee80211vap *, int);
486 	/* power save handling */
487 	void			(*iv_update_ps)(struct ieee80211vap *, int);
488 	int			(*iv_set_tim)(struct ieee80211_node *, int);
489 	void			(*iv_node_ps)(struct ieee80211_node *, int);
490 	void			(*iv_sta_ps)(struct ieee80211vap *, int);
491 	void			(*iv_recv_pspoll)(struct ieee80211_node *,
492 				    struct mbuf *);
493 
494 	/* state machine processing */
495 	int			(*iv_newstate)(struct ieee80211vap *,
496 				    enum ieee80211_state, int);
497 	/* 802.3 output method for raw frame xmit */
498 	int			(*iv_output)(struct ifnet *, struct mbuf *,
499 				    struct sockaddr *, struct route *);
500 	uint64_t		iv_spare[6];
501 };
502 MALLOC_DECLARE(M_80211_VAP);
503 
504 #define	IEEE80211_ADDR_EQ(a1,a2)	(memcmp(a1,a2,IEEE80211_ADDR_LEN) == 0)
505 #define	IEEE80211_ADDR_COPY(dst,src)	memcpy(dst,src,IEEE80211_ADDR_LEN)
506 
507 /* ic_flags/iv_flags */
508 #define	IEEE80211_F_TURBOP	0x00000001	/* CONF: ATH Turbo enabled*/
509 #define	IEEE80211_F_COMP	0x00000002	/* CONF: ATH comp enabled */
510 #define	IEEE80211_F_FF		0x00000004	/* CONF: ATH FF enabled */
511 #define	IEEE80211_F_BURST	0x00000008	/* CONF: bursting enabled */
512 /* NB: this is intentionally setup to be IEEE80211_CAPINFO_PRIVACY */
513 #define	IEEE80211_F_PRIVACY	0x00000010	/* CONF: privacy enabled */
514 #define	IEEE80211_F_PUREG	0x00000020	/* CONF: 11g w/o 11b sta's */
515 #define	IEEE80211_F_SCAN	0x00000080	/* STATUS: scanning */
516 #define	IEEE80211_F_ASCAN	0x00000100	/* STATUS: active scan */
517 #define	IEEE80211_F_SIBSS	0x00000200	/* STATUS: start IBSS */
518 /* NB: this is intentionally setup to be IEEE80211_CAPINFO_SHORT_SLOTTIME */
519 #define	IEEE80211_F_SHSLOT	0x00000400	/* STATUS: use short slot time*/
520 #define	IEEE80211_F_PMGTON	0x00000800	/* CONF: Power mgmt enable */
521 #define	IEEE80211_F_DESBSSID	0x00001000	/* CONF: des_bssid is set */
522 #define	IEEE80211_F_WME		0x00002000	/* CONF: enable WME use */
523 #define	IEEE80211_F_BGSCAN	0x00004000	/* CONF: bg scan enabled (???)*/
524 #define	IEEE80211_F_SWRETRY	0x00008000	/* CONF: sw tx retry enabled */
525 #define IEEE80211_F_TXPOW_FIXED	0x00010000	/* TX Power: fixed rate */
526 #define	IEEE80211_F_IBSSON	0x00020000	/* CONF: IBSS creation enable */
527 #define	IEEE80211_F_SHPREAMBLE	0x00040000	/* STATUS: use short preamble */
528 #define	IEEE80211_F_DATAPAD	0x00080000	/* CONF: do alignment pad */
529 #define	IEEE80211_F_USEPROT	0x00100000	/* STATUS: protection enabled */
530 #define	IEEE80211_F_USEBARKER	0x00200000	/* STATUS: use barker preamble*/
531 #define	IEEE80211_F_CSAPENDING	0x00400000	/* STATUS: chan switch pending*/
532 #define	IEEE80211_F_WPA1	0x00800000	/* CONF: WPA enabled */
533 #define	IEEE80211_F_WPA2	0x01000000	/* CONF: WPA2 enabled */
534 #define	IEEE80211_F_WPA		0x01800000	/* CONF: WPA/WPA2 enabled */
535 #define	IEEE80211_F_DROPUNENC	0x02000000	/* CONF: drop unencrypted */
536 #define	IEEE80211_F_COUNTERM	0x04000000	/* CONF: TKIP countermeasures */
537 #define	IEEE80211_F_HIDESSID	0x08000000	/* CONF: hide SSID in beacon */
538 #define	IEEE80211_F_NOBRIDGE	0x10000000	/* CONF: dis. internal bridge */
539 #define	IEEE80211_F_PCF		0x20000000	/* CONF: PCF enabled */
540 #define	IEEE80211_F_DOTH	0x40000000	/* CONF: 11h enabled */
541 #define	IEEE80211_F_DWDS	0x80000000	/* CONF: Dynamic WDS enabled */
542 
543 #define	IEEE80211_F_BITS \
544 	"\20\1TURBOP\2COMP\3FF\4BURST\5PRIVACY\6PUREG\10SCAN\11ASCAN\12SIBSS" \
545 	"\13SHSLOT\14PMGTON\15DESBSSID\16WME\17BGSCAN\20SWRETRY\21TXPOW_FIXED" \
546 	"\22IBSSON\23SHPREAMBLE\24DATAPAD\25USEPROT\26USERBARKER\27CSAPENDING" \
547 	"\30WPA1\31WPA2\32DROPUNENC\33COUNTERM\34HIDESSID\35NOBRIDG\36PCF" \
548 	"\37DOTH\40DWDS"
549 
550 /* Atheros protocol-specific flags */
551 #define	IEEE80211_F_ATHEROS \
552 	(IEEE80211_F_FF | IEEE80211_F_COMP | IEEE80211_F_TURBOP)
553 /* Check if an Atheros capability was negotiated for use */
554 #define	IEEE80211_ATH_CAP(vap, ni, bit) \
555 	((vap)->iv_flags & (ni)->ni_ath_flags & (bit))
556 
557 /* ic_flags_ext/iv_flags_ext */
558 #define	IEEE80211_FEXT_INACT	 0x00000002	/* CONF: sta inact handling */
559 #define	IEEE80211_FEXT_SCANWAIT	 0x00000004	/* STATUS: awaiting scan */
560 /* 0x00000006 reserved */
561 #define	IEEE80211_FEXT_BGSCAN	 0x00000008	/* STATUS: complete bgscan */
562 #define	IEEE80211_FEXT_WPS	 0x00000010	/* CONF: WPS enabled */
563 #define	IEEE80211_FEXT_TSN 	 0x00000020	/* CONF: TSN enabled */
564 #define	IEEE80211_FEXT_SCANREQ	 0x00000040	/* STATUS: scan req params */
565 #define	IEEE80211_FEXT_RESUME	 0x00000080	/* STATUS: start on resume */
566 #define	IEEE80211_FEXT_4ADDR	 0x00000100	/* CONF: apply 4-addr encap */
567 #define	IEEE80211_FEXT_NONERP_PR 0x00000200	/* STATUS: non-ERP sta present*/
568 #define	IEEE80211_FEXT_SWBMISS	 0x00000400	/* CONF: do bmiss in s/w */
569 #define	IEEE80211_FEXT_DFS	 0x00000800	/* CONF: DFS enabled */
570 #define	IEEE80211_FEXT_DOTD	 0x00001000	/* CONF: 11d enabled */
571 #define	IEEE80211_FEXT_STATEWAIT 0x00002000	/* STATUS: awaiting state chg */
572 #define	IEEE80211_FEXT_REINIT	 0x00004000	/* STATUS: INIT state first */
573 #define	IEEE80211_FEXT_BPF	 0x00008000	/* STATUS: BPF tap present */
574 /* NB: immutable: should be set only when creating a vap */
575 #define	IEEE80211_FEXT_WDSLEGACY 0x00010000	/* CONF: legacy WDS operation */
576 #define	IEEE80211_FEXT_PROBECHAN 0x00020000	/* CONF: probe passive channel*/
577 #define	IEEE80211_FEXT_UNIQMAC	 0x00040000	/* CONF: user or computed mac */
578 
579 #define	IEEE80211_FEXT_BITS \
580 	"\20\2INACT\3SCANWAIT\4BGSCAN\5WPS\6TSN\7SCANREQ\10RESUME" \
581 	"\0114ADDR\12NONEPR_PR\13SWBMISS\14DFS\15DOTD\16STATEWAIT\17REINIT" \
582 	"\20BPF\21WDSLEGACY\22PROBECHAN\23UNIQMAC"
583 
584 /* ic_flags_ht/iv_flags_ht */
585 #define	IEEE80211_FHT_NONHT_PR	 0x00000001	/* STATUS: non-HT sta present */
586 #define	IEEE80211_FHT_GF  	 0x00040000	/* CONF: Greenfield enabled */
587 #define	IEEE80211_FHT_HT	 0x00080000	/* CONF: HT supported */
588 #define	IEEE80211_FHT_AMPDU_TX	 0x00100000	/* CONF: A-MPDU tx supported */
589 #define	IEEE80211_FHT_AMPDU_RX	 0x00200000	/* CONF: A-MPDU rx supported */
590 #define	IEEE80211_FHT_AMSDU_TX	 0x00400000	/* CONF: A-MSDU tx supported */
591 #define	IEEE80211_FHT_AMSDU_RX	 0x00800000	/* CONF: A-MSDU rx supported */
592 #define	IEEE80211_FHT_USEHT40	 0x01000000	/* CONF: 20/40 use enabled */
593 #define	IEEE80211_FHT_PUREN	 0x02000000	/* CONF: 11n w/o legacy sta's */
594 #define	IEEE80211_FHT_SHORTGI20	 0x04000000	/* CONF: short GI in HT20 */
595 #define	IEEE80211_FHT_SHORTGI40	 0x08000000	/* CONF: short GI in HT40 */
596 #define	IEEE80211_FHT_HTCOMPAT 	 0x10000000	/* CONF: HT vendor OUI's */
597 #define	IEEE80211_FHT_RIFS  	 0x20000000	/* CONF: RIFS enabled */
598 #define	IEEE80211_FHT_STBC_TX 	 0x40000000	/* CONF: STBC tx enabled */
599 #define	IEEE80211_FHT_STBC_RX 	 0x80000000	/* CONF: STBC rx enabled */
600 
601 #define	IEEE80211_FHT_BITS \
602 	"\20\1NONHT_PR" \
603 	"\23GF\24HT\25AMPDU_TX\26AMPDU_TX" \
604 	"\27AMSDU_TX\30AMSDU_RX\31USEHT40\32PUREN\33SHORTGI20\34SHORTGI40" \
605 	"\35HTCOMPAT\36RIFS\37STBC_TX\40STBC_RX"
606 
607 #define	IEEE80211_FVEN_BITS	"\20"
608 
609 /* ic_caps/iv_caps: device driver capabilities */
610 /* 0x2e available */
611 #define	IEEE80211_C_STA		0x00000001	/* CAPABILITY: STA available */
612 #define	IEEE80211_C_8023ENCAP	0x00000002	/* CAPABILITY: 802.3 encap */
613 #define	IEEE80211_C_FF		0x00000040	/* CAPABILITY: ATH FF avail */
614 #define	IEEE80211_C_TURBOP	0x00000080	/* CAPABILITY: ATH Turbo avail*/
615 #define	IEEE80211_C_IBSS	0x00000100	/* CAPABILITY: IBSS available */
616 #define	IEEE80211_C_PMGT	0x00000200	/* CAPABILITY: Power mgmt */
617 #define	IEEE80211_C_HOSTAP	0x00000400	/* CAPABILITY: HOSTAP avail */
618 #define	IEEE80211_C_AHDEMO	0x00000800	/* CAPABILITY: Old Adhoc Demo */
619 #define	IEEE80211_C_SWRETRY	0x00001000	/* CAPABILITY: sw tx retry */
620 #define	IEEE80211_C_TXPMGT	0x00002000	/* CAPABILITY: tx power mgmt */
621 #define	IEEE80211_C_SHSLOT	0x00004000	/* CAPABILITY: short slottime */
622 #define	IEEE80211_C_SHPREAMBLE	0x00008000	/* CAPABILITY: short preamble */
623 #define	IEEE80211_C_MONITOR	0x00010000	/* CAPABILITY: monitor mode */
624 #define	IEEE80211_C_DFS		0x00020000	/* CAPABILITY: DFS/radar avail*/
625 #define	IEEE80211_C_MBSS	0x00040000	/* CAPABILITY: MBSS available */
626 /* 0x7c0000 available */
627 #define	IEEE80211_C_WPA1	0x00800000	/* CAPABILITY: WPA1 avail */
628 #define	IEEE80211_C_WPA2	0x01000000	/* CAPABILITY: WPA2 avail */
629 #define	IEEE80211_C_WPA		0x01800000	/* CAPABILITY: WPA1+WPA2 avail*/
630 #define	IEEE80211_C_BURST	0x02000000	/* CAPABILITY: frame bursting */
631 #define	IEEE80211_C_WME		0x04000000	/* CAPABILITY: WME avail */
632 #define	IEEE80211_C_WDS		0x08000000	/* CAPABILITY: 4-addr support */
633 /* 0x10000000 reserved */
634 #define	IEEE80211_C_BGSCAN	0x20000000	/* CAPABILITY: bg scanning */
635 #define	IEEE80211_C_TXFRAG	0x40000000	/* CAPABILITY: tx fragments */
636 #define	IEEE80211_C_TDMA	0x80000000	/* CAPABILITY: TDMA avail */
637 /* XXX protection/barker? */
638 
639 #define	IEEE80211_C_OPMODE \
640 	(IEEE80211_C_STA | IEEE80211_C_IBSS | IEEE80211_C_HOSTAP | \
641 	 IEEE80211_C_AHDEMO | IEEE80211_C_MONITOR | IEEE80211_C_WDS | \
642 	 IEEE80211_C_TDMA | IEEE80211_C_MBSS)
643 
644 #define	IEEE80211_C_BITS \
645 	"\20\1STA\002803ENCAP\7FF\10TURBOP\11IBSS\12PMGT" \
646 	"\13HOSTAP\14AHDEMO\15SWRETRY\16TXPMGT\17SHSLOT\20SHPREAMBLE" \
647 	"\21MONITOR\22DFS\23MBSS\30WPA1\31WPA2\32BURST\33WME\34WDS\36BGSCAN" \
648 	"\37TXFRAG\40TDMA"
649 
650 /*
651  * ic_htcaps/iv_htcaps: HT-specific device/driver capabilities
652  *
653  * NB: the low 16-bits are the 802.11 definitions, the upper
654  *     16-bits are used to define s/w/driver capabilities.
655  */
656 #define	IEEE80211_HTC_AMPDU	0x00010000	/* CAPABILITY: A-MPDU tx */
657 #define	IEEE80211_HTC_AMSDU	0x00020000	/* CAPABILITY: A-MSDU tx */
658 /* NB: HT40 is implied by IEEE80211_HTCAP_CHWIDTH40 */
659 #define	IEEE80211_HTC_HT	0x00040000	/* CAPABILITY: HT operation */
660 #define	IEEE80211_HTC_SMPS	0x00080000	/* CAPABILITY: MIMO power save*/
661 #define	IEEE80211_HTC_RIFS	0x00100000	/* CAPABILITY: RIFS support */
662 #define	IEEE80211_HTC_RXUNEQUAL	0x00200000	/* CAPABILITY: RX unequal MCS */
663 #define	IEEE80211_HTC_RXMCS32	0x00400000	/* CAPABILITY: MCS32 support */
664 #define	IEEE80211_HTC_TXUNEQUAL	0x00800000	/* CAPABILITY: TX unequal MCS */
665 #define	IEEE80211_HTC_TXMCS32	0x01000000	/* CAPABILITY: MCS32 suport */
666 
667 #define	IEEE80211_C_HTCAP_BITS \
668 	"\20\1LDPC\2CHWIDTH40\5GREENFIELD\6SHORTGI20\7SHORTGI40\10TXSTBC" \
669 	"\21AMPDU\22AMSDU\23HT\24SMPS\25RIFS"
670 
671 void	ieee80211_ifattach(struct ieee80211com *,
672 		const uint8_t macaddr[IEEE80211_ADDR_LEN]);
673 void	ieee80211_ifdetach(struct ieee80211com *);
674 int	ieee80211_vap_setup(struct ieee80211com *, struct ieee80211vap *,
675 		const char name[IFNAMSIZ], int unit,
676 		enum ieee80211_opmode opmode, int flags,
677 		const uint8_t bssid[IEEE80211_ADDR_LEN],
678 		const uint8_t macaddr[IEEE80211_ADDR_LEN]);
679 int	ieee80211_vap_attach(struct ieee80211vap *,
680 		ifm_change_cb_t, ifm_stat_cb_t);
681 void	ieee80211_vap_detach(struct ieee80211vap *);
682 const struct ieee80211_rateset *ieee80211_get_suprates(struct ieee80211com *ic,
683 		const struct ieee80211_channel *);
684 void	ieee80211_announce(struct ieee80211com *);
685 void	ieee80211_announce_channels(struct ieee80211com *);
686 void	ieee80211_drain(struct ieee80211com *);
687 void	ieee80211_media_init(struct ieee80211com *);
688 struct ieee80211com *ieee80211_find_vap(const uint8_t mac[IEEE80211_ADDR_LEN]);
689 int	ieee80211_media_change(struct ifnet *);
690 void	ieee80211_media_status(struct ifnet *, struct ifmediareq *);
691 int	ieee80211_ioctl(struct ifnet *, u_long, caddr_t);
692 int	ieee80211_rate2media(struct ieee80211com *, int,
693 		enum ieee80211_phymode);
694 int	ieee80211_media2rate(int);
695 int	ieee80211_mhz2ieee(u_int, u_int);
696 int	ieee80211_chan2ieee(struct ieee80211com *,
697 		const struct ieee80211_channel *);
698 u_int	ieee80211_ieee2mhz(u_int, u_int);
699 struct ieee80211_channel *ieee80211_find_channel(struct ieee80211com *,
700 		int freq, int flags);
701 struct ieee80211_channel *ieee80211_find_channel_byieee(struct ieee80211com *,
702 		int ieee, int flags);
703 int	ieee80211_setmode(struct ieee80211com *, enum ieee80211_phymode);
704 enum ieee80211_phymode ieee80211_chan2mode(const struct ieee80211_channel *);
705 uint32_t ieee80211_mac_hash(const struct ieee80211com *,
706 		const uint8_t addr[IEEE80211_ADDR_LEN]);
707 
708 void	ieee80211_radiotap_attach(struct ieee80211com *,
709 	    struct ieee80211_radiotap_header *th, int tlen,
710 		uint32_t tx_radiotap,
711 	    struct ieee80211_radiotap_header *rh, int rlen,
712 		uint32_t rx_radiotap);
713 void	ieee80211_radiotap_attachv(struct ieee80211com *,
714 	    struct ieee80211_radiotap_header *th,
715 	    int tlen, int n_tx_v, uint32_t tx_radiotap,
716 	    struct ieee80211_radiotap_header *rh,
717 	    int rlen, int n_rx_v, uint32_t rx_radiotap);
718 void	ieee80211_radiotap_detach(struct ieee80211com *);
719 void	ieee80211_radiotap_vattach(struct ieee80211vap *);
720 void	ieee80211_radiotap_vdetach(struct ieee80211vap *);
721 void	ieee80211_radiotap_chan_change(struct ieee80211com *);
722 void	ieee80211_radiotap_tx(struct ieee80211vap *, struct mbuf *);
723 void	ieee80211_radiotap_rx(struct ieee80211vap *, struct mbuf *);
724 void	ieee80211_radiotap_rx_all(struct ieee80211com *, struct mbuf *);
725 
726 static __inline int
727 ieee80211_radiotap_active(const struct ieee80211com *ic)
728 {
729 	return (ic->ic_flags_ext & IEEE80211_FEXT_BPF) != 0;
730 }
731 
732 static __inline int
733 ieee80211_radiotap_active_vap(const struct ieee80211vap *vap)
734 {
735 	return (vap->iv_flags_ext & IEEE80211_FEXT_BPF) ||
736 	    vap->iv_ic->ic_montaps != 0;
737 }
738 
739 /*
740  * Enqueue a task on the state thread.
741  */
742 static __inline void
743 ieee80211_runtask(struct ieee80211com *ic, struct task *task)
744 {
745 	taskqueue_enqueue(ic->ic_tq, task);
746 }
747 
748 /*
749  * Wait for a queued task to complete.
750  */
751 static __inline void
752 ieee80211_draintask(struct ieee80211com *ic, struct task *task)
753 {
754 	taskqueue_drain(ic->ic_tq, task);
755 }
756 
757 /*
758  * Key update synchronization methods.  XXX should not be visible.
759  */
760 static __inline void
761 ieee80211_key_update_begin(struct ieee80211vap *vap)
762 {
763 	vap->iv_key_update_begin(vap);
764 }
765 static __inline void
766 ieee80211_key_update_end(struct ieee80211vap *vap)
767 {
768 	vap->iv_key_update_end(vap);
769 }
770 
771 /*
772  * XXX these need to be here for IEEE80211_F_DATAPAD
773  */
774 
775 /*
776  * Return the space occupied by the 802.11 header and any
777  * padding required by the driver.  This works for a
778  * management or data frame.
779  */
780 static __inline int
781 ieee80211_hdrspace(struct ieee80211com *ic, const void *data)
782 {
783 	int size = ieee80211_hdrsize(data);
784 	if (ic->ic_flags & IEEE80211_F_DATAPAD)
785 		size = roundup(size, sizeof(uint32_t));
786 	return size;
787 }
788 
789 /*
790  * Like ieee80211_hdrspace, but handles any type of frame.
791  */
792 static __inline int
793 ieee80211_anyhdrspace(struct ieee80211com *ic, const void *data)
794 {
795 	int size = ieee80211_anyhdrsize(data);
796 	if (ic->ic_flags & IEEE80211_F_DATAPAD)
797 		size = roundup(size, sizeof(uint32_t));
798 	return size;
799 }
800 
801 /*
802  * Notify a vap that beacon state has been updated.
803  */
804 static __inline void
805 ieee80211_beacon_notify(struct ieee80211vap *vap, int what)
806 {
807 	if (vap->iv_state == IEEE80211_S_RUN)
808 		vap->iv_update_beacon(vap, what);
809 }
810 
811 /*
812  * Calculate HT channel promotion flags for a channel.
813  * XXX belongs in ieee80211_ht.h but needs IEEE80211_FHT_*
814  */
815 static __inline int
816 ieee80211_htchanflags(const struct ieee80211_channel *c)
817 {
818 	return IEEE80211_IS_CHAN_HT40(c) ?
819 	    IEEE80211_FHT_HT | IEEE80211_FHT_USEHT40 :
820 	    IEEE80211_IS_CHAN_HT(c) ?  IEEE80211_FHT_HT : 0;
821 }
822 
823 /*
824  * Debugging facilities compiled in when IEEE80211_DEBUG is defined.
825  *
826  * The intent is that any problem in the net80211 layer can be
827  * diagnosed by inspecting the statistics (dumped by the wlanstats
828  * program) and/or the msgs generated by net80211.  Messages are
829  * broken into functional classes and can be controlled with the
830  * wlandebug program.  Certain of these msg groups are for facilities
831  * that are no longer part of net80211 (e.g. IEEE80211_MSG_DOT1XSM).
832  */
833 #define	IEEE80211_MSG_11N	0x80000000	/* 11n mode debug */
834 #define	IEEE80211_MSG_DEBUG	0x40000000	/* IFF_DEBUG equivalent */
835 #define	IEEE80211_MSG_DUMPPKTS	0x20000000	/* IFF_LINK2 equivalant */
836 #define	IEEE80211_MSG_CRYPTO	0x10000000	/* crypto work */
837 #define	IEEE80211_MSG_INPUT	0x08000000	/* input handling */
838 #define	IEEE80211_MSG_XRATE	0x04000000	/* rate set handling */
839 #define	IEEE80211_MSG_ELEMID	0x02000000	/* element id parsing */
840 #define	IEEE80211_MSG_NODE	0x01000000	/* node handling */
841 #define	IEEE80211_MSG_ASSOC	0x00800000	/* association handling */
842 #define	IEEE80211_MSG_AUTH	0x00400000	/* authentication handling */
843 #define	IEEE80211_MSG_SCAN	0x00200000	/* scanning */
844 #define	IEEE80211_MSG_OUTPUT	0x00100000	/* output handling */
845 #define	IEEE80211_MSG_STATE	0x00080000	/* state machine */
846 #define	IEEE80211_MSG_POWER	0x00040000	/* power save handling */
847 #define	IEEE80211_MSG_HWMP	0x00020000	/* hybrid mesh protocol */
848 #define	IEEE80211_MSG_DOT1XSM	0x00010000	/* 802.1x state machine */
849 #define	IEEE80211_MSG_RADIUS	0x00008000	/* 802.1x radius client */
850 #define	IEEE80211_MSG_RADDUMP	0x00004000	/* dump 802.1x radius packets */
851 #define	IEEE80211_MSG_MESH	0x00002000	/* mesh networking */
852 #define	IEEE80211_MSG_WPA	0x00001000	/* WPA/RSN protocol */
853 #define	IEEE80211_MSG_ACL	0x00000800	/* ACL handling */
854 #define	IEEE80211_MSG_WME	0x00000400	/* WME protocol */
855 #define	IEEE80211_MSG_SUPERG	0x00000200	/* Atheros SuperG protocol */
856 #define	IEEE80211_MSG_DOTH	0x00000100	/* 802.11h support */
857 #define	IEEE80211_MSG_INACT	0x00000080	/* inactivity handling */
858 #define	IEEE80211_MSG_ROAM	0x00000040	/* sta-mode roaming */
859 #define	IEEE80211_MSG_RATECTL	0x00000020	/* tx rate control */
860 #define	IEEE80211_MSG_ACTION	0x00000010	/* action frame handling */
861 #define	IEEE80211_MSG_WDS	0x00000008	/* WDS handling */
862 #define	IEEE80211_MSG_IOCTL	0x00000004	/* ioctl handling */
863 #define	IEEE80211_MSG_TDMA	0x00000002	/* TDMA handling */
864 
865 #define	IEEE80211_MSG_ANY	0xffffffff	/* anything */
866 
867 #define	IEEE80211_MSG_BITS \
868 	"\20\2TDMA\3IOCTL\4WDS\5ACTION\6RATECTL\7ROAM\10INACT\11DOTH\12SUPERG" \
869 	"\13WME\14ACL\15WPA\16RADKEYS\17RADDUMP\20RADIUS\21DOT1XSM\22HWMP" \
870 	"\23POWER\24STATE\25OUTPUT\26SCAN\27AUTH\30ASSOC\31NODE\32ELEMID" \
871 	"\33XRATE\34INPUT\35CRYPTO\36DUPMPKTS\37DEBUG\04011N"
872 
873 #ifdef IEEE80211_DEBUG
874 #define	ieee80211_msg(_vap, _m)	((_vap)->iv_debug & (_m))
875 #define	IEEE80211_DPRINTF(_vap, _m, _fmt, ...) do {			\
876 	if (ieee80211_msg(_vap, _m))					\
877 		ieee80211_note(_vap, _fmt, __VA_ARGS__);		\
878 } while (0)
879 #define	IEEE80211_NOTE(_vap, _m, _ni, _fmt, ...) do {			\
880 	if (ieee80211_msg(_vap, _m))					\
881 		ieee80211_note_mac(_vap, (_ni)->ni_macaddr, _fmt, __VA_ARGS__);\
882 } while (0)
883 #define	IEEE80211_NOTE_MAC(_vap, _m, _mac, _fmt, ...) do {		\
884 	if (ieee80211_msg(_vap, _m))					\
885 		ieee80211_note_mac(_vap, _mac, _fmt, __VA_ARGS__);	\
886 } while (0)
887 #define	IEEE80211_NOTE_FRAME(_vap, _m, _wh, _fmt, ...) do {		\
888 	if (ieee80211_msg(_vap, _m))					\
889 		ieee80211_note_frame(_vap, _wh, _fmt, __VA_ARGS__);	\
890 } while (0)
891 void	ieee80211_note(const struct ieee80211vap *, const char *, ...);
892 void	ieee80211_note_mac(const struct ieee80211vap *,
893 		const uint8_t mac[IEEE80211_ADDR_LEN], const char *, ...);
894 void	ieee80211_note_frame(const struct ieee80211vap *,
895 		const struct ieee80211_frame *, const char *, ...);
896 #define	ieee80211_msg_debug(_vap) \
897 	((_vap)->iv_debug & IEEE80211_MSG_DEBUG)
898 #define	ieee80211_msg_dumppkts(_vap) \
899 	((_vap)->iv_debug & IEEE80211_MSG_DUMPPKTS)
900 #define	ieee80211_msg_input(_vap) \
901 	((_vap)->iv_debug & IEEE80211_MSG_INPUT)
902 #define	ieee80211_msg_radius(_vap) \
903 	((_vap)->iv_debug & IEEE80211_MSG_RADIUS)
904 #define	ieee80211_msg_dumpradius(_vap) \
905 	((_vap)->iv_debug & IEEE80211_MSG_RADDUMP)
906 #define	ieee80211_msg_dumpradkeys(_vap) \
907 	((_vap)->iv_debug & IEEE80211_MSG_RADKEYS)
908 #define	ieee80211_msg_scan(_vap) \
909 	((_vap)->iv_debug & IEEE80211_MSG_SCAN)
910 #define	ieee80211_msg_assoc(_vap) \
911 	((_vap)->iv_debug & IEEE80211_MSG_ASSOC)
912 
913 /*
914  * Emit a debug message about discarding a frame or information
915  * element.  One format is for extracting the mac address from
916  * the frame header; the other is for when a header is not
917  * available or otherwise appropriate.
918  */
919 #define	IEEE80211_DISCARD(_vap, _m, _wh, _type, _fmt, ...) do {		\
920 	if ((_vap)->iv_debug & (_m))					\
921 		ieee80211_discard_frame(_vap, _wh, _type, _fmt, __VA_ARGS__);\
922 } while (0)
923 #define	IEEE80211_DISCARD_IE(_vap, _m, _wh, _type, _fmt, ...) do {	\
924 	if ((_vap)->iv_debug & (_m))					\
925 		ieee80211_discard_ie(_vap, _wh, _type, _fmt, __VA_ARGS__);\
926 } while (0)
927 #define	IEEE80211_DISCARD_MAC(_vap, _m, _mac, _type, _fmt, ...) do {	\
928 	if ((_vap)->iv_debug & (_m))					\
929 		ieee80211_discard_mac(_vap, _mac, _type, _fmt, __VA_ARGS__);\
930 } while (0)
931 
932 void ieee80211_discard_frame(const struct ieee80211vap *,
933 	const struct ieee80211_frame *, const char *type, const char *fmt, ...);
934 void ieee80211_discard_ie(const struct ieee80211vap *,
935 	const struct ieee80211_frame *, const char *type, const char *fmt, ...);
936 void ieee80211_discard_mac(const struct ieee80211vap *,
937 	const uint8_t mac[IEEE80211_ADDR_LEN], const char *type,
938 	const char *fmt, ...);
939 #else
940 #define	IEEE80211_DPRINTF(_vap, _m, _fmt, ...)
941 #define	IEEE80211_NOTE(_vap, _m, _ni, _fmt, ...)
942 #define	IEEE80211_NOTE_FRAME(_vap, _m, _wh, _fmt, ...)
943 #define	IEEE80211_NOTE_MAC(_vap, _m, _mac, _fmt, ...)
944 #define	ieee80211_msg_dumppkts(_vap)	0
945 #define	ieee80211_msg(_vap, _m)		0
946 
947 #define	IEEE80211_DISCARD(_vap, _m, _wh, _type, _fmt, ...)
948 #define	IEEE80211_DISCARD_IE(_vap, _m, _wh, _type, _fmt, ...)
949 #define	IEEE80211_DISCARD_MAC(_vap, _m, _mac, _type, _fmt, ...)
950 #endif
951 
952 #endif /* _NET80211_IEEE80211_VAR_H_ */
953