xref: /freebsd/sys/net80211/ieee80211_var.h (revision 4928135658a9d0eaee37003df6137ab363fcb0b4)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2001 Atsushi Onoe
5  * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 #ifndef _NET80211_IEEE80211_VAR_H_
31 #define _NET80211_IEEE80211_VAR_H_
32 
33 /*
34  * Definitions for IEEE 802.11 drivers.
35  */
36 /* NB: portability glue must go first */
37 #if defined(__NetBSD__)
38 #include <net80211/ieee80211_netbsd.h>
39 #elif defined(__FreeBSD__)
40 #include <net80211/ieee80211_freebsd.h>
41 #elif defined(__linux__)
42 #include <net80211/ieee80211_linux.h>
43 #else
44 #error	"No support for your operating system!"
45 #endif
46 
47 #include <net80211/_ieee80211.h>
48 #include <net80211/ieee80211.h>
49 #include <net80211/ieee80211_ageq.h>
50 #include <net80211/ieee80211_crypto.h>
51 #include <net80211/ieee80211_dfs.h>
52 #include <net80211/ieee80211_ioctl.h>		/* for ieee80211_stats */
53 #include <net80211/ieee80211_phy.h>
54 #include <net80211/ieee80211_power.h>
55 #include <net80211/ieee80211_node.h>
56 #include <net80211/ieee80211_proto.h>
57 #include <net80211/ieee80211_radiotap.h>
58 #include <net80211/ieee80211_scan.h>
59 
60 #define	IEEE80211_TXPOWER_MAX	100	/* .5 dBm (XXX units?) */
61 #define	IEEE80211_TXPOWER_MIN	0	/* kill radio */
62 
63 #define	IEEE80211_DTIM_DEFAULT	1	/* default DTIM period */
64 #define	IEEE80211_BINTVAL_DEFAULT 100	/* default beacon interval (TU's) */
65 
66 #define	IEEE80211_BMISS_MAX	2	/* maximum consecutive bmiss allowed */
67 #define	IEEE80211_HWBMISS_DEFAULT 7	/* h/w bmiss threshold (beacons) */
68 
69 #define	IEEE80211_BGSCAN_INTVAL_MIN	15	/* min bg scan intvl (secs) */
70 #define	IEEE80211_BGSCAN_INTVAL_DEFAULT	(5*60)	/* default bg scan intvl */
71 
72 #define	IEEE80211_BGSCAN_IDLE_MIN	100	/* min idle time (ms) */
73 #define	IEEE80211_BGSCAN_IDLE_DEFAULT	250	/* default idle time (ms) */
74 
75 #define	IEEE80211_SCAN_VALID_MIN	10	/* min scan valid time (secs) */
76 #define	IEEE80211_SCAN_VALID_DEFAULT	60	/* default scan valid time */
77 
78 #define	IEEE80211_PS_SLEEP	0x1	/* STA is in power saving mode */
79 #define	IEEE80211_PS_MAX_QUEUE	50	/* maximum saved packets */
80 
81 #define	IEEE80211_FIXED_RATE_NONE	0xff
82 #define	IEEE80211_TXMAX_DEFAULT		6	/* default ucast max retries */
83 
84 #define	IEEE80211_RTS_DEFAULT		IEEE80211_RTS_MAX
85 #define	IEEE80211_FRAG_DEFAULT		IEEE80211_FRAG_MAX
86 
87 #define	IEEE80211_MS_TO_TU(x)	(((x) * 1000) / 1024)
88 #define	IEEE80211_TU_TO_MS(x)	(((x) * 1024) / 1000)
89 /* XXX TODO: cap this at 1, in case hz is not 1000 */
90 #define	IEEE80211_TU_TO_TICKS(x)(((uint64_t)(x) * 1024 * hz) / (1000 * 1000))
91 
92 /*
93  * Technically, vhtflags may be 0 /and/ 11ac is enabled.
94  * At some point ic should just grow a flag somewhere that
95  * says that VHT is supported - and then this macro can be
96  * changed.
97  */
98 #define	IEEE80211_CONF_VHT(ic)			\
99 	    ((ic)->ic_flags_ext & IEEE80211_FEXT_VHT)
100 
101 #define	IEEE80211_CONF_SEQNO_OFFLOAD(ic)	\
102 	    ((ic)->ic_flags_ext & IEEE80211_FEXT_SEQNO_OFFLOAD)
103 #define	IEEE80211_CONF_FRAG_OFFLOAD(ic)	\
104 	    ((ic)->ic_flags_ext & IEEE80211_FEXT_FRAG_OFFLOAD)
105 
106 /*
107  * 802.11 control state is split into a common portion that maps
108  * 1-1 to a physical device and one or more "Virtual AP's" (VAP)
109  * that are bound to an ieee80211com instance and share a single
110  * underlying device.  Each VAP has a corresponding OS device
111  * entity through which traffic flows and that applications use
112  * for issuing ioctls, etc.
113  */
114 
115 /*
116  * Data common to one or more virtual AP's.  State shared by
117  * the underlying device and the net80211 layer is exposed here;
118  * e.g. device-specific callbacks.
119  */
120 struct ieee80211vap;
121 typedef void (*ieee80211vap_attach)(struct ieee80211vap *);
122 
123 struct ieee80211_appie {
124 	uint16_t		ie_len;		/* size of ie_data */
125 	uint8_t			ie_data[];	/* user-specified IE's */
126 };
127 
128 struct ieee80211_tdma_param;
129 struct ieee80211_rate_table;
130 struct ieee80211_tx_ampdu;
131 struct ieee80211_rx_ampdu;
132 struct ieee80211_superg;
133 struct ieee80211_frame;
134 
135 struct ieee80211com {
136 	void			*ic_softc;	/* driver softc */
137 	const char		*ic_name;	/* usually device name */
138 	ieee80211_com_lock_t	ic_comlock;	/* state update lock */
139 	ieee80211_tx_lock_t	ic_txlock;	/* ic/vap TX lock */
140 	ieee80211_ff_lock_t	ic_fflock;	/* stageq/ni_tx_superg lock */
141 	LIST_ENTRY(ieee80211com)   ic_next;	/* on global list */
142 	TAILQ_HEAD(, ieee80211vap) ic_vaps;	/* list of vap instances */
143 	int			ic_headroom;	/* driver tx headroom needs */
144 	enum ieee80211_phytype	ic_phytype;	/* XXX wrong for multi-mode */
145 	enum ieee80211_opmode	ic_opmode;	/* operation mode */
146 	struct callout		ic_inact;	/* inactivity processing */
147 	struct taskqueue	*ic_tq;		/* deferred state thread */
148 	struct task		ic_parent_task;	/* deferred parent processing */
149 	struct task		ic_promisc_task;/* deferred promisc update */
150 	struct task		ic_mcast_task;	/* deferred mcast update */
151 	struct task		ic_chan_task;	/* deferred channel change */
152 	struct task		ic_bmiss_task;	/* deferred beacon miss hndlr */
153 	struct task		ic_chw_task;	/* deferred HT CHW update */
154 	struct task		ic_restart_task; /* deferred device restart */
155 
156 	counter_u64_t		ic_ierrors;	/* input errors */
157 	counter_u64_t		ic_oerrors;	/* output errors */
158 
159 	uint32_t		ic_flags;	/* state flags */
160 	uint32_t		ic_flags_ext;	/* extended state flags */
161 	uint32_t		ic_flags_ht;	/* HT state flags */
162 	uint32_t		ic_flags_ven;	/* vendor state flags */
163 	uint32_t		ic_caps;	/* capabilities */
164 	uint32_t		ic_htcaps;	/* HT capabilities */
165 	uint32_t		ic_htextcaps;	/* HT extended capabilities */
166 	uint32_t		ic_cryptocaps;	/* crypto capabilities */
167 						/* set of mode capabilities */
168 	uint8_t			ic_modecaps[IEEE80211_MODE_BYTES];
169 	uint8_t			ic_promisc;	/* vap's needing promisc mode */
170 	uint8_t			ic_allmulti;	/* vap's needing all multicast*/
171 	uint8_t			ic_nrunning;	/* vap's marked running */
172 	uint8_t			ic_curmode;	/* current mode */
173 	uint8_t			ic_macaddr[IEEE80211_ADDR_LEN];
174 	uint16_t		ic_bintval;	/* beacon interval */
175 	uint16_t		ic_lintval;	/* listen interval */
176 	uint16_t		ic_holdover;	/* PM hold over duration */
177 	uint16_t		ic_txpowlimit;	/* global tx power limit */
178 	struct ieee80211_rateset ic_sup_rates[IEEE80211_MODE_MAX];
179 	struct ieee80211_htrateset ic_sup_htrates;
180 
181 	/*
182 	 * Channel state:
183 	 *
184 	 * ic_channels is the set of available channels for the device;
185 	 *    it is setup by the driver
186 	 * ic_nchans is the number of valid entries in ic_channels
187 	 * ic_chan_avail is a bit vector of these channels used to check
188 	 *    whether a channel is available w/o searching the channel table.
189 	 * ic_chan_active is a (potentially) constrained subset of
190 	 *    ic_chan_avail that reflects any mode setting or user-specified
191 	 *    limit on the set of channels to use/scan
192 	 * ic_curchan is the current channel the device is set to; it may
193 	 *    be different from ic_bsschan when we are off-channel scanning
194 	 *    or otherwise doing background work
195 	 * ic_bsschan is the channel selected for operation; it may
196 	 *    be undefined (IEEE80211_CHAN_ANYC)
197 	 * ic_prevchan is a cached ``previous channel'' used to optimize
198 	 *    lookups when switching back+forth between two channels
199 	 *    (e.g. for dynamic turbo)
200 	 */
201 	int			ic_nchans;	/* # entries in ic_channels */
202 	struct ieee80211_channel ic_channels[IEEE80211_CHAN_MAX];
203 	uint8_t			ic_chan_avail[IEEE80211_CHAN_BYTES];
204 	uint8_t			ic_chan_active[IEEE80211_CHAN_BYTES];
205 	uint8_t			ic_chan_scan[IEEE80211_CHAN_BYTES];
206 	struct ieee80211_channel *ic_curchan;	/* current channel */
207 	const struct ieee80211_rate_table *ic_rt; /* table for ic_curchan */
208 	struct ieee80211_channel *ic_bsschan;	/* bss channel */
209 	struct ieee80211_channel *ic_prevchan;	/* previous channel */
210 	struct ieee80211_regdomain ic_regdomain;/* regulatory data */
211 	struct ieee80211_appie	*ic_countryie;	/* calculated country ie */
212 	struct ieee80211_channel *ic_countryie_chan;
213 
214 	/* 802.11h/DFS state */
215 	struct ieee80211_channel *ic_csa_newchan;/* channel for doing CSA */
216 	short			ic_csa_mode;	/* mode for doing CSA */
217 	short			ic_csa_count;	/* count for doing CSA */
218 	struct ieee80211_dfs_state ic_dfs;	/* DFS state */
219 
220 	struct ieee80211_scan_state *ic_scan;	/* scan state */
221 	struct ieee80211_scan_methods *ic_scan_methods;	/* scan methods */
222 	int			ic_lastdata;	/* time of last data frame */
223 	int			ic_lastscan;	/* time last scan completed */
224 
225 	/* NB: this is the union of all vap stations/neighbors */
226 	int			ic_max_keyix;	/* max h/w key index */
227 	struct ieee80211_node_table ic_sta;	/* stations/neighbors */
228 	struct ieee80211_ageq	ic_stageq;	/* frame staging queue */
229 	uint32_t		ic_hash_key;	/* random key for mac hash */
230 
231 	/* XXX multi-bss: split out common/vap parts */
232 	struct ieee80211_wme_state ic_wme;	/* WME/WMM state */
233 
234 	/* XXX multi-bss: can per-vap be done/make sense? */
235 	enum ieee80211_protmode	ic_protmode;	/* 802.11g protection mode */
236 	uint16_t		ic_nonerpsta;	/* # non-ERP stations */
237 	uint16_t		ic_longslotsta;	/* # long slot time stations */
238 	uint16_t		ic_sta_assoc;	/* stations associated */
239 	uint16_t		ic_ht_sta_assoc;/* HT stations associated */
240 	uint16_t		ic_ht40_sta_assoc;/* HT40 stations associated */
241 	uint8_t			ic_curhtprotmode;/* HTINFO bss state */
242 	enum ieee80211_protmode	ic_htprotmode;	/* HT protection mode */
243 	int			ic_lastnonerp;	/* last time non-ERP sta noted*/
244 	int			ic_lastnonht;	/* last time non-HT sta noted */
245 	uint8_t			ic_rxstream;    /* # RX streams */
246 	uint8_t			ic_txstream;    /* # TX streams */
247 
248 	/* VHT information */
249 	uint32_t		ic_vhtcaps;	/* VHT capabilities */
250 	uint32_t		ic_vhtextcaps;	/* VHT extended capabilities (TODO) */
251 	struct ieee80211_vht_mcs_info	ic_vht_mcsinfo; /* Support TX/RX VHT MCS */
252 	uint32_t		ic_flags_vht;	/* VHT state flags */
253 	uint32_t		ic_vht_spare[3];
254 
255 	/* optional state for Atheros SuperG protocol extensions */
256 	struct ieee80211_superg	*ic_superg;
257 
258 	/* radiotap handling */
259 	struct ieee80211_radiotap_header *ic_th;/* tx radiotap headers */
260 	void			*ic_txchan;	/* channel state in ic_th */
261 	struct ieee80211_radiotap_header *ic_rh;/* rx radiotap headers */
262 	void			*ic_rxchan;	/* channel state in ic_rh */
263 	int			ic_montaps;	/* active monitor mode taps */
264 
265 	/* virtual ap create/delete */
266 	struct ieee80211vap*	(*ic_vap_create)(struct ieee80211com *,
267 				    const char [IFNAMSIZ], int,
268 				    enum ieee80211_opmode, int,
269 				    const uint8_t [IEEE80211_ADDR_LEN],
270 				    const uint8_t [IEEE80211_ADDR_LEN]);
271 	void			(*ic_vap_delete)(struct ieee80211vap *);
272 	/* device specific ioctls */
273 	int			(*ic_ioctl)(struct ieee80211com *,
274 				    u_long, void *);
275 	/* start/stop device */
276 	void			(*ic_parent)(struct ieee80211com *);
277 	/* operating mode attachment */
278 	ieee80211vap_attach	ic_vattach[IEEE80211_OPMODE_MAX];
279 	/* return hardware/radio capabilities */
280 	void			(*ic_getradiocaps)(struct ieee80211com *,
281 				    int, int *, struct ieee80211_channel []);
282 	/* check and/or prepare regdomain state change */
283 	int			(*ic_setregdomain)(struct ieee80211com *,
284 				    struct ieee80211_regdomain *,
285 				    int, struct ieee80211_channel []);
286 
287 	int			(*ic_set_quiet)(struct ieee80211_node *,
288 				    u_int8_t *quiet_elm);
289 
290 	/* regular transmit */
291 	int			(*ic_transmit)(struct ieee80211com *,
292 				    struct mbuf *);
293 	/* send/recv 802.11 management frame */
294 	int			(*ic_send_mgmt)(struct ieee80211_node *,
295 				     int, int);
296 	/* send raw 802.11 frame */
297 	int			(*ic_raw_xmit)(struct ieee80211_node *,
298 				    struct mbuf *,
299 				    const struct ieee80211_bpf_params *);
300 	/* update device state for 802.11 slot time change */
301 	void			(*ic_updateslot)(struct ieee80211com *);
302 	/* handle multicast state changes */
303 	void			(*ic_update_mcast)(struct ieee80211com *);
304 	/* handle promiscuous mode changes */
305 	void			(*ic_update_promisc)(struct ieee80211com *);
306 	/* new station association callback/notification */
307 	void			(*ic_newassoc)(struct ieee80211_node *, int);
308 	/* TDMA update notification */
309 	void			(*ic_tdma_update)(struct ieee80211_node *,
310 				    const struct ieee80211_tdma_param *, int);
311 	/* node state management */
312 	struct ieee80211_node*	(*ic_node_alloc)(struct ieee80211vap *,
313 				    const uint8_t [IEEE80211_ADDR_LEN]);
314 	void			(*ic_node_free)(struct ieee80211_node *);
315 	void			(*ic_node_cleanup)(struct ieee80211_node *);
316 	void			(*ic_node_age)(struct ieee80211_node *);
317 	void			(*ic_node_drain)(struct ieee80211_node *);
318 	int8_t			(*ic_node_getrssi)(const struct ieee80211_node*);
319 	void			(*ic_node_getsignal)(const struct ieee80211_node*,
320 				    int8_t *, int8_t *);
321 	void			(*ic_node_getmimoinfo)(
322 				    const struct ieee80211_node*,
323 				    struct ieee80211_mimo_info *);
324 	/* scanning support */
325 	void			(*ic_scan_start)(struct ieee80211com *);
326 	void			(*ic_scan_end)(struct ieee80211com *);
327 	void			(*ic_set_channel)(struct ieee80211com *);
328 	void			(*ic_scan_curchan)(struct ieee80211_scan_state *,
329 				    unsigned long);
330 	void			(*ic_scan_mindwell)(struct ieee80211_scan_state *);
331 
332 	/*
333 	 * 802.11n ADDBA support.  A simple/generic implementation
334 	 * of A-MPDU tx aggregation is provided; the driver may
335 	 * override these methods to provide their own support.
336 	 * A-MPDU rx re-ordering happens automatically if the
337 	 * driver passes out-of-order frames to ieee80211_input
338 	 * from an assocated HT station.
339 	 */
340 	int			(*ic_recv_action)(struct ieee80211_node *,
341 				    const struct ieee80211_frame *,
342 				    const uint8_t *frm, const uint8_t *efrm);
343 	int			(*ic_send_action)(struct ieee80211_node *,
344 				    int category, int action, void *);
345 	/* check if A-MPDU should be enabled this station+ac */
346 	int			(*ic_ampdu_enable)(struct ieee80211_node *,
347 				    struct ieee80211_tx_ampdu *);
348 	/* start/stop doing A-MPDU tx aggregation for a station */
349 	int			(*ic_addba_request)(struct ieee80211_node *,
350 				    struct ieee80211_tx_ampdu *,
351 				    int dialogtoken, int baparamset,
352 				    int batimeout);
353 	int			(*ic_addba_response)(struct ieee80211_node *,
354 				    struct ieee80211_tx_ampdu *,
355 				    int status, int baparamset, int batimeout);
356 	void			(*ic_addba_stop)(struct ieee80211_node *,
357 				    struct ieee80211_tx_ampdu *);
358 	void			(*ic_addba_response_timeout)(struct ieee80211_node *,
359 				    struct ieee80211_tx_ampdu *);
360 	/* BAR response received */
361 	void			(*ic_bar_response)(struct ieee80211_node *,
362 				    struct ieee80211_tx_ampdu *, int status);
363 	/* start/stop doing A-MPDU rx processing for a station */
364 	int			(*ic_ampdu_rx_start)(struct ieee80211_node *,
365 				    struct ieee80211_rx_ampdu *, int baparamset,
366 				    int batimeout, int baseqctl);
367 	void			(*ic_ampdu_rx_stop)(struct ieee80211_node *,
368 				    struct ieee80211_rx_ampdu *);
369 
370 	/* The channel width has changed (20<->2040) */
371 	void			(*ic_update_chw)(struct ieee80211com *);
372 
373 	uint64_t		ic_spare[7];
374 };
375 
376 struct ieee80211_aclator;
377 struct ieee80211_tdma_state;
378 struct ieee80211_mesh_state;
379 struct ieee80211_hwmp_state;
380 
381 struct ieee80211vap {
382 	struct ifmedia		iv_media;	/* interface media config */
383 	struct ifnet		*iv_ifp;	/* associated device */
384 	struct bpf_if		*iv_rawbpf;	/* packet filter structure */
385 	struct sysctl_ctx_list	*iv_sysctl;	/* dynamic sysctl context */
386 	struct sysctl_oid	*iv_oid;	/* net.wlan.X sysctl oid */
387 
388 	TAILQ_ENTRY(ieee80211vap) iv_next;	/* list of vap instances */
389 	struct ieee80211com	*iv_ic;		/* back ptr to common state */
390 	/* MAC address: ifp or ic */
391 	uint8_t			iv_myaddr[IEEE80211_ADDR_LEN];
392 	uint32_t		iv_debug;	/* debug msg flags */
393 	struct ieee80211_stats	iv_stats;	/* statistics */
394 
395 	uint32_t		iv_flags;	/* state flags */
396 	uint32_t		iv_flags_ext;	/* extended state flags */
397 	uint32_t		iv_flags_ht;	/* HT state flags */
398 	uint32_t		iv_flags_ven;	/* vendor state flags */
399 	uint32_t		iv_ifflags;	/* ifnet flags */
400 	uint32_t		iv_caps;	/* capabilities */
401 	uint32_t		iv_htcaps;	/* HT capabilities */
402 	uint32_t		iv_htextcaps;	/* HT extended capabilities */
403 	enum ieee80211_opmode	iv_opmode;	/* operation mode */
404 	enum ieee80211_state	iv_state;	/* state machine state */
405 	enum ieee80211_state	iv_nstate;	/* pending state */
406 	int			iv_nstate_arg;	/* pending state arg */
407 	struct task		iv_nstate_task;	/* deferred state processing */
408 	struct task		iv_swbmiss_task;/* deferred iv_bmiss call */
409 	struct callout		iv_mgtsend;	/* mgmt frame response timer */
410 						/* inactivity timer settings */
411 	int			iv_inact_init;	/* setting for new station */
412 	int			iv_inact_auth;	/* auth but not assoc setting */
413 	int			iv_inact_run;	/* authorized setting */
414 	int			iv_inact_probe;	/* inactive probe time */
415 
416 	/* VHT flags */
417 	uint32_t		iv_flags_vht;	/* VHT state flags */
418 	uint32_t		iv_vhtcaps;	/* VHT capabilities */
419 	uint32_t		iv_vhtextcaps;	/* VHT extended capabilities (TODO) */
420 	struct ieee80211_vht_mcs_info	iv_vht_mcsinfo;
421 	uint32_t		iv_vht_spare[4];
422 
423 	int			iv_des_nssid;	/* # desired ssids */
424 	struct ieee80211_scan_ssid iv_des_ssid[1];/* desired ssid table */
425 	uint8_t			iv_des_bssid[IEEE80211_ADDR_LEN];
426 	struct ieee80211_channel *iv_des_chan;	/* desired channel */
427 	uint16_t		iv_des_mode;	/* desired mode */
428 	int			iv_nicknamelen;	/* XXX junk */
429 	uint8_t			iv_nickname[IEEE80211_NWID_LEN];
430 	u_int			iv_bgscanidle;	/* bg scan idle threshold */
431 	u_int			iv_bgscanintvl;	/* bg scan min interval */
432 	u_int			iv_scanvalid;	/* scan cache valid threshold */
433 	u_int			iv_scanreq_duration;
434 	u_int			iv_scanreq_mindwell;
435 	u_int			iv_scanreq_maxdwell;
436 	uint16_t		iv_scanreq_flags;/* held scan request params */
437 	uint8_t			iv_scanreq_nssid;
438 	struct ieee80211_scan_ssid iv_scanreq_ssid[IEEE80211_SCAN_MAX_SSID];
439 	/* sta-mode roaming state */
440 	enum ieee80211_roamingmode iv_roaming;	/* roaming mode */
441 	struct ieee80211_roamparam iv_roamparms[IEEE80211_MODE_MAX];
442 
443 	uint8_t			iv_bmissthreshold;
444 	uint8_t			iv_bmiss_count;	/* current beacon miss count */
445 	int			iv_bmiss_max;	/* max bmiss before scan */
446 	uint16_t		iv_swbmiss_count;/* beacons in last period */
447 	uint16_t		iv_swbmiss_period;/* s/w bmiss period */
448 	struct callout		iv_swbmiss;	/* s/w beacon miss timer */
449 
450 	int			iv_ampdu_rxmax;	/* A-MPDU rx limit (bytes) */
451 	int			iv_ampdu_density;/* A-MPDU density */
452 	int			iv_ampdu_limit;	/* A-MPDU tx limit (bytes) */
453 	int			iv_amsdu_limit;	/* A-MSDU tx limit (bytes) */
454 	u_int			iv_ampdu_mintraffic[WME_NUM_AC];
455 
456 	struct ieee80211_beacon_offsets iv_bcn_off;
457 	uint32_t		*iv_aid_bitmap;	/* association id map */
458 	uint16_t		iv_max_aid;
459 	uint16_t		iv_sta_assoc;	/* stations associated */
460 	uint16_t		iv_ps_sta;	/* stations in power save */
461 	uint16_t		iv_ps_pending;	/* ps sta's w/ pending frames */
462 	uint16_t		iv_txseq;	/* mcast xmit seq# space */
463 	uint16_t		iv_tim_len;	/* ic_tim_bitmap size (bytes) */
464 	uint8_t			*iv_tim_bitmap;	/* power-save stations w/ data*/
465 	uint8_t			iv_dtim_period;	/* DTIM period */
466 	uint8_t			iv_dtim_count;	/* DTIM count from last bcn */
467 						/* set/unset aid pwrsav state */
468 	uint8_t			iv_quiet;	/* Quiet Element */
469 	uint8_t			iv_quiet_count;	/* constant count for Quiet Element */
470 	uint8_t			iv_quiet_count_value;	/* variable count for Quiet Element */
471 	uint8_t			iv_quiet_period;	/* period for Quiet Element */
472 	uint16_t		iv_quiet_duration;	/* duration for Quiet Element */
473 	uint16_t		iv_quiet_offset;	/* offset for Quiet Element */
474 	int			iv_csa_count;	/* count for doing CSA */
475 
476 	struct ieee80211_node	*iv_bss;	/* information for this node */
477 	struct ieee80211_txparam iv_txparms[IEEE80211_MODE_MAX];
478 	uint16_t		iv_rtsthreshold;
479 	uint16_t		iv_fragthreshold;
480 	int			iv_inact_timer;	/* inactivity timer wait */
481 	/* application-specified IE's to attach to mgt frames */
482 	struct ieee80211_appie	*iv_appie_beacon;
483 	struct ieee80211_appie	*iv_appie_probereq;
484 	struct ieee80211_appie	*iv_appie_proberesp;
485 	struct ieee80211_appie	*iv_appie_assocreq;
486 	struct ieee80211_appie	*iv_appie_assocresp;
487 	struct ieee80211_appie	*iv_appie_wpa;
488 	uint8_t			*iv_wpa_ie;
489 	uint8_t			*iv_rsn_ie;
490 
491 	/* Key management */
492 	uint16_t		iv_max_keyix;	/* max h/w key index */
493 	ieee80211_keyix		iv_def_txkey;	/* default/group tx key index */
494 	struct ieee80211_key	iv_nw_keys[IEEE80211_WEP_NKID];
495 	int			(*iv_key_alloc)(struct ieee80211vap *,
496 				    struct ieee80211_key *,
497 				    ieee80211_keyix *, ieee80211_keyix *);
498 	int			(*iv_key_delete)(struct ieee80211vap *,
499 				    const struct ieee80211_key *);
500 	int			(*iv_key_set)(struct ieee80211vap *,
501 				    const struct ieee80211_key *);
502 	void			(*iv_key_update_begin)(struct ieee80211vap *);
503 	void			(*iv_key_update_end)(struct ieee80211vap *);
504 	void			(*iv_update_deftxkey)(struct ieee80211vap *,
505 				    ieee80211_keyix deftxkey);
506 
507 	const struct ieee80211_authenticator *iv_auth; /* authenticator glue */
508 	void			*iv_ec;		/* private auth state */
509 
510 	const struct ieee80211_aclator *iv_acl;	/* acl glue */
511 	void			*iv_as;		/* private aclator state */
512 
513 	const struct ieee80211_ratectl *iv_rate;
514 	void			*iv_rs;		/* private ratectl state */
515 
516 	struct ieee80211_tdma_state *iv_tdma;	/* tdma state */
517 	struct ieee80211_mesh_state *iv_mesh;	/* MBSS state */
518 	struct ieee80211_hwmp_state *iv_hwmp;	/* HWMP state */
519 
520 	/* operate-mode detach hook */
521 	void			(*iv_opdetach)(struct ieee80211vap *);
522 	/* receive processing */
523 	int			(*iv_input)(struct ieee80211_node *,
524 				    struct mbuf *,
525 				    const struct ieee80211_rx_stats *,
526 				    int, int);
527 	void			(*iv_recv_mgmt)(struct ieee80211_node *,
528 				    struct mbuf *, int,
529 				    const struct ieee80211_rx_stats *,
530 				    int, int);
531 	void			(*iv_recv_ctl)(struct ieee80211_node *,
532 				    struct mbuf *, int);
533 	void			(*iv_deliver_data)(struct ieee80211vap *,
534 				    struct ieee80211_node *, struct mbuf *);
535 #if 0
536 	/* send processing */
537 	int			(*iv_send_mgmt)(struct ieee80211_node *,
538 				     int, int);
539 #endif
540 	/* beacon miss processing */
541 	void			(*iv_bmiss)(struct ieee80211vap *);
542 	/* reset device state after 802.11 parameter/state change */
543 	int			(*iv_reset)(struct ieee80211vap *, u_long);
544 	/* [schedule] beacon frame update */
545 	void			(*iv_update_beacon)(struct ieee80211vap *, int);
546 	/* power save handling */
547 	void			(*iv_update_ps)(struct ieee80211vap *, int);
548 	int			(*iv_set_tim)(struct ieee80211_node *, int);
549 	void			(*iv_node_ps)(struct ieee80211_node *, int);
550 	void			(*iv_sta_ps)(struct ieee80211vap *, int);
551 	void			(*iv_recv_pspoll)(struct ieee80211_node *,
552 				    struct mbuf *);
553 
554 	/* state machine processing */
555 	int			(*iv_newstate)(struct ieee80211vap *,
556 				    enum ieee80211_state, int);
557 	/* 802.3 output method for raw frame xmit */
558 	int			(*iv_output)(struct ifnet *, struct mbuf *,
559 				    const struct sockaddr *, struct route *);
560 
561 	int			(*iv_wme_update)(struct ieee80211vap *,
562 				    const struct wmeParams *wme_params);
563 	struct task		iv_wme_task;	/* deferred VAP WME update */
564 
565 	uint64_t		iv_spare[6];
566 };
567 MALLOC_DECLARE(M_80211_VAP);
568 
569 #define	IEEE80211_ADDR_EQ(a1,a2)	(memcmp(a1,a2,IEEE80211_ADDR_LEN) == 0)
570 #define	IEEE80211_ADDR_COPY(dst,src)	memcpy(dst,src,IEEE80211_ADDR_LEN)
571 
572 /* ic_flags/iv_flags */
573 #define	IEEE80211_F_TURBOP	0x00000001	/* CONF: ATH Turbo enabled*/
574 #define	IEEE80211_F_COMP	0x00000002	/* CONF: ATH comp enabled */
575 #define	IEEE80211_F_FF		0x00000004	/* CONF: ATH FF enabled */
576 #define	IEEE80211_F_BURST	0x00000008	/* CONF: bursting enabled */
577 /* NB: this is intentionally setup to be IEEE80211_CAPINFO_PRIVACY */
578 #define	IEEE80211_F_PRIVACY	0x00000010	/* CONF: privacy enabled */
579 #define	IEEE80211_F_PUREG	0x00000020	/* CONF: 11g w/o 11b sta's */
580 #define	IEEE80211_F_SCAN	0x00000080	/* STATUS: scanning */
581 /* 0x00000300 reserved */
582 /* NB: this is intentionally setup to be IEEE80211_CAPINFO_SHORT_SLOTTIME */
583 #define	IEEE80211_F_SHSLOT	0x00000400	/* STATUS: use short slot time*/
584 #define	IEEE80211_F_PMGTON	0x00000800	/* CONF: Power mgmt enable */
585 #define	IEEE80211_F_DESBSSID	0x00001000	/* CONF: des_bssid is set */
586 #define	IEEE80211_F_WME		0x00002000	/* CONF: enable WME use */
587 #define	IEEE80211_F_BGSCAN	0x00004000	/* CONF: bg scan enabled (???)*/
588 #define	IEEE80211_F_SWRETRY	0x00008000	/* CONF: sw tx retry enabled */
589 /* 0x00030000 reserved */
590 #define	IEEE80211_F_SHPREAMBLE	0x00040000	/* STATUS: use short preamble */
591 #define	IEEE80211_F_DATAPAD	0x00080000	/* CONF: do alignment pad */
592 #define	IEEE80211_F_USEPROT	0x00100000	/* STATUS: protection enabled */
593 #define	IEEE80211_F_USEBARKER	0x00200000	/* STATUS: use barker preamble*/
594 #define	IEEE80211_F_CSAPENDING	0x00400000	/* STATUS: chan switch pending*/
595 #define	IEEE80211_F_WPA1	0x00800000	/* CONF: WPA enabled */
596 #define	IEEE80211_F_WPA2	0x01000000	/* CONF: WPA2 enabled */
597 #define	IEEE80211_F_WPA		0x01800000	/* CONF: WPA/WPA2 enabled */
598 #define	IEEE80211_F_DROPUNENC	0x02000000	/* CONF: drop unencrypted */
599 #define	IEEE80211_F_COUNTERM	0x04000000	/* CONF: TKIP countermeasures */
600 #define	IEEE80211_F_HIDESSID	0x08000000	/* CONF: hide SSID in beacon */
601 #define	IEEE80211_F_NOBRIDGE	0x10000000	/* CONF: dis. internal bridge */
602 #define	IEEE80211_F_PCF		0x20000000	/* CONF: PCF enabled */
603 #define	IEEE80211_F_DOTH	0x40000000	/* CONF: 11h enabled */
604 #define	IEEE80211_F_DWDS	0x80000000	/* CONF: Dynamic WDS enabled */
605 
606 #define	IEEE80211_F_BITS \
607 	"\20\1TURBOP\2COMP\3FF\4BURST\5PRIVACY\6PUREG\10SCAN" \
608 	"\13SHSLOT\14PMGTON\15DESBSSID\16WME\17BGSCAN\20SWRETRY" \
609 	"\23SHPREAMBLE\24DATAPAD\25USEPROT\26USERBARKER\27CSAPENDING" \
610 	"\30WPA1\31WPA2\32DROPUNENC\33COUNTERM\34HIDESSID\35NOBRIDG\36PCF" \
611 	"\37DOTH\40DWDS"
612 
613 /* Atheros protocol-specific flags */
614 #define	IEEE80211_F_ATHEROS \
615 	(IEEE80211_F_FF | IEEE80211_F_COMP | IEEE80211_F_TURBOP)
616 /* Check if an Atheros capability was negotiated for use */
617 #define	IEEE80211_ATH_CAP(vap, ni, bit) \
618 	((vap)->iv_flags & (ni)->ni_ath_flags & (bit))
619 
620 /* ic_flags_ext/iv_flags_ext */
621 #define	IEEE80211_FEXT_INACT	 0x00000002	/* CONF: sta inact handling */
622 #define	IEEE80211_FEXT_SCANWAIT	 0x00000004	/* STATUS: awaiting scan */
623 /* 0x00000006 reserved */
624 #define	IEEE80211_FEXT_BGSCAN	 0x00000008	/* STATUS: complete bgscan */
625 #define	IEEE80211_FEXT_WPS	 0x00000010	/* CONF: WPS enabled */
626 #define	IEEE80211_FEXT_TSN 	 0x00000020	/* CONF: TSN enabled */
627 #define	IEEE80211_FEXT_SCANREQ	 0x00000040	/* STATUS: scan req params */
628 #define	IEEE80211_FEXT_RESUME	 0x00000080	/* STATUS: start on resume */
629 #define	IEEE80211_FEXT_4ADDR	 0x00000100	/* CONF: apply 4-addr encap */
630 #define	IEEE80211_FEXT_NONERP_PR 0x00000200	/* STATUS: non-ERP sta present*/
631 #define	IEEE80211_FEXT_SWBMISS	 0x00000400	/* CONF: do bmiss in s/w */
632 #define	IEEE80211_FEXT_DFS	 0x00000800	/* CONF: DFS enabled */
633 #define	IEEE80211_FEXT_DOTD	 0x00001000	/* CONF: 11d enabled */
634 #define	IEEE80211_FEXT_STATEWAIT 0x00002000	/* STATUS: awaiting state chg */
635 #define	IEEE80211_FEXT_REINIT	 0x00004000	/* STATUS: INIT state first */
636 #define	IEEE80211_FEXT_BPF	 0x00008000	/* STATUS: BPF tap present */
637 /* NB: immutable: should be set only when creating a vap */
638 #define	IEEE80211_FEXT_WDSLEGACY 0x00010000	/* CONF: legacy WDS operation */
639 #define	IEEE80211_FEXT_PROBECHAN 0x00020000	/* CONF: probe passive channel*/
640 #define	IEEE80211_FEXT_UNIQMAC	 0x00040000	/* CONF: user or computed mac */
641 #define	IEEE80211_FEXT_SCAN_OFFLOAD	0x00080000	/* CONF: scan is fully offloaded */
642 #define	IEEE80211_FEXT_SEQNO_OFFLOAD	0x00100000	/* CONF: driver does seqno insertion/allocation */
643 #define	IEEE80211_FEXT_FRAG_OFFLOAD	0x00200000	/* CONF: hardware does 802.11 fragmentation + assignment */
644 #define	IEEE80211_FEXT_VHT	0x00400000	/* CONF: VHT support */
645 #define	IEEE80211_FEXT_QUIET_IE	0x00800000	/* STATUS: quiet IE in a beacon has been added */
646 
647 #define	IEEE80211_FEXT_BITS \
648 	"\20\2INACT\3SCANWAIT\4BGSCAN\5WPS\6TSN\7SCANREQ\10RESUME" \
649 	"\0114ADDR\12NONEPR_PR\13SWBMISS\14DFS\15DOTD\16STATEWAIT\17REINIT" \
650 	"\20BPF\21WDSLEGACY\22PROBECHAN\23UNIQMAC\24SCAN_OFFLOAD\25SEQNO_OFFLOAD" \
651 	"\26VHT\27QUIET_IE"
652 
653 /* ic_flags_ht/iv_flags_ht */
654 #define	IEEE80211_FHT_NONHT_PR	 0x00000001	/* STATUS: non-HT sta present */
655 #define	IEEE80211_FHT_LDPC_TX	 0x00010000	/* CONF: LDPC tx enabled */
656 #define	IEEE80211_FHT_LDPC_RX	 0x00020000	/* CONF: LDPC rx enabled */
657 #define	IEEE80211_FHT_GF  	 0x00040000	/* CONF: Greenfield enabled */
658 #define	IEEE80211_FHT_HT	 0x00080000	/* CONF: HT supported */
659 #define	IEEE80211_FHT_AMPDU_TX	 0x00100000	/* CONF: A-MPDU tx supported */
660 #define	IEEE80211_FHT_AMPDU_RX	 0x00200000	/* CONF: A-MPDU rx supported */
661 #define	IEEE80211_FHT_AMSDU_TX	 0x00400000	/* CONF: A-MSDU tx supported */
662 #define	IEEE80211_FHT_AMSDU_RX	 0x00800000	/* CONF: A-MSDU rx supported */
663 #define	IEEE80211_FHT_USEHT40	 0x01000000	/* CONF: 20/40 use enabled */
664 #define	IEEE80211_FHT_PUREN	 0x02000000	/* CONF: 11n w/o legacy sta's */
665 #define	IEEE80211_FHT_SHORTGI20	 0x04000000	/* CONF: short GI in HT20 */
666 #define	IEEE80211_FHT_SHORTGI40	 0x08000000	/* CONF: short GI in HT40 */
667 #define	IEEE80211_FHT_HTCOMPAT 	 0x10000000	/* CONF: HT vendor OUI's */
668 #define	IEEE80211_FHT_RIFS  	 0x20000000	/* CONF: RIFS enabled */
669 #define	IEEE80211_FHT_STBC_TX 	 0x40000000	/* CONF: STBC tx enabled */
670 #define	IEEE80211_FHT_STBC_RX 	 0x80000000	/* CONF: STBC rx enabled */
671 
672 #define	IEEE80211_FHT_BITS \
673 	"\20\1NONHT_PR" \
674 	"\23GF\24HT\25AMPDU_TX\26AMPDU_TX" \
675 	"\27AMSDU_TX\30AMSDU_RX\31USEHT40\32PUREN\33SHORTGI20\34SHORTGI40" \
676 	"\35HTCOMPAT\36RIFS\37STBC_TX\40STBC_RX"
677 
678 #define	IEEE80211_FVEN_BITS	"\20"
679 
680 #define	IEEE80211_FVHT_VHT	0x000000001	/* CONF: VHT supported */
681 #define	IEEE80211_FVHT_USEVHT40	0x000000002	/* CONF: Use VHT40 */
682 #define	IEEE80211_FVHT_USEVHT80	0x000000004	/* CONF: Use VHT80 */
683 #define	IEEE80211_FVHT_USEVHT80P80	0x000000008	/* CONF: Use VHT 80+80 */
684 #define	IEEE80211_FVHT_USEVHT160	0x000000010	/* CONF: Use VHT160 */
685 #define	IEEE80211_VFHT_BITS \
686 	"\20\1VHT\2VHT40\3VHT80\4VHT80P80\5VHT160"
687 
688 int	ic_printf(struct ieee80211com *, const char *, ...) __printflike(2, 3);
689 void	ieee80211_ifattach(struct ieee80211com *);
690 void	ieee80211_ifdetach(struct ieee80211com *);
691 int	ieee80211_vap_setup(struct ieee80211com *, struct ieee80211vap *,
692 		const char name[IFNAMSIZ], int unit,
693 		enum ieee80211_opmode opmode, int flags,
694 		const uint8_t bssid[IEEE80211_ADDR_LEN]);
695 int	ieee80211_vap_attach(struct ieee80211vap *,
696 		ifm_change_cb_t, ifm_stat_cb_t,
697 		const uint8_t macaddr[IEEE80211_ADDR_LEN]);
698 void	ieee80211_vap_detach(struct ieee80211vap *);
699 const struct ieee80211_rateset *ieee80211_get_suprates(struct ieee80211com *ic,
700 		const struct ieee80211_channel *);
701 const struct ieee80211_htrateset *ieee80211_get_suphtrates(
702 		struct ieee80211com *, const struct ieee80211_channel *);
703 void	ieee80211_announce(struct ieee80211com *);
704 void	ieee80211_announce_channels(struct ieee80211com *);
705 void	ieee80211_drain(struct ieee80211com *);
706 void	ieee80211_chan_init(struct ieee80211com *);
707 struct ieee80211com *ieee80211_find_vap(const uint8_t mac[IEEE80211_ADDR_LEN]);
708 struct ieee80211com *ieee80211_find_com(const char *name);
709 typedef void ieee80211_com_iter_func(void *, struct ieee80211com *);
710 void	ieee80211_iterate_coms(ieee80211_com_iter_func *, void *);
711 int	ieee80211_media_change(struct ifnet *);
712 void	ieee80211_media_status(struct ifnet *, struct ifmediareq *);
713 int	ieee80211_ioctl(struct ifnet *, u_long, caddr_t);
714 int	ieee80211_rate2media(struct ieee80211com *, int,
715 		enum ieee80211_phymode);
716 int	ieee80211_media2rate(int);
717 int	ieee80211_mhz2ieee(u_int, u_int);
718 int	ieee80211_chan2ieee(struct ieee80211com *,
719 		const struct ieee80211_channel *);
720 u_int	ieee80211_ieee2mhz(u_int, u_int);
721 int	ieee80211_add_channel(struct ieee80211_channel[], int, int *,
722 	    uint8_t, uint16_t, int8_t, uint32_t, const uint8_t[]);
723 int	ieee80211_add_channel_ht40(struct ieee80211_channel[], int, int *,
724 	    uint8_t, int8_t, uint32_t);
725 uint32_t ieee80211_get_channel_center_freq(const struct ieee80211_channel *);
726 uint32_t ieee80211_get_channel_center_freq1(const struct ieee80211_channel *);
727 uint32_t ieee80211_get_channel_center_freq2(const struct ieee80211_channel *);
728 int	ieee80211_add_channel_list_2ghz(struct ieee80211_channel[], int, int *,
729 	    const uint8_t[], int, const uint8_t[], int);
730 int	ieee80211_add_channel_list_5ghz(struct ieee80211_channel[], int, int *,
731 	    const uint8_t[], int, const uint8_t[], int);
732 struct ieee80211_channel *ieee80211_find_channel(struct ieee80211com *,
733 		int freq, int flags);
734 struct ieee80211_channel *ieee80211_find_channel_byieee(struct ieee80211com *,
735 		int ieee, int flags);
736 struct ieee80211_channel *ieee80211_lookup_channel_rxstatus(struct ieee80211vap *,
737 		const struct ieee80211_rx_stats *);
738 int	ieee80211_setmode(struct ieee80211com *, enum ieee80211_phymode);
739 enum ieee80211_phymode ieee80211_chan2mode(const struct ieee80211_channel *);
740 uint32_t ieee80211_mac_hash(const struct ieee80211com *,
741 		const uint8_t addr[IEEE80211_ADDR_LEN]);
742 char	ieee80211_channel_type_char(const struct ieee80211_channel *c);
743 
744 #define	ieee80211_get_current_channel(_ic)	((_ic)->ic_curchan)
745 #define	ieee80211_get_home_channel(_ic)		((_ic)->ic_bsschan)
746 #define	ieee80211_get_vap_desired_channel(_iv)	((_iv)->iv_des_chan)
747 
748 void	ieee80211_radiotap_attach(struct ieee80211com *,
749 	    struct ieee80211_radiotap_header *th, int tlen,
750 		uint32_t tx_radiotap,
751 	    struct ieee80211_radiotap_header *rh, int rlen,
752 		uint32_t rx_radiotap);
753 void	ieee80211_radiotap_attachv(struct ieee80211com *,
754 	    struct ieee80211_radiotap_header *th,
755 	    int tlen, int n_tx_v, uint32_t tx_radiotap,
756 	    struct ieee80211_radiotap_header *rh,
757 	    int rlen, int n_rx_v, uint32_t rx_radiotap);
758 void	ieee80211_radiotap_detach(struct ieee80211com *);
759 void	ieee80211_radiotap_vattach(struct ieee80211vap *);
760 void	ieee80211_radiotap_vdetach(struct ieee80211vap *);
761 void	ieee80211_radiotap_chan_change(struct ieee80211com *);
762 void	ieee80211_radiotap_tx(struct ieee80211vap *, struct mbuf *);
763 void	ieee80211_radiotap_rx(struct ieee80211vap *, struct mbuf *);
764 void	ieee80211_radiotap_rx_all(struct ieee80211com *, struct mbuf *);
765 
766 static __inline int
767 ieee80211_radiotap_active(const struct ieee80211com *ic)
768 {
769 	return (ic->ic_flags_ext & IEEE80211_FEXT_BPF) != 0;
770 }
771 
772 static __inline int
773 ieee80211_radiotap_active_vap(const struct ieee80211vap *vap)
774 {
775 	return (vap->iv_flags_ext & IEEE80211_FEXT_BPF) ||
776 	    vap->iv_ic->ic_montaps != 0;
777 }
778 
779 /*
780  * Enqueue a task on the state thread.
781  */
782 static __inline void
783 ieee80211_runtask(struct ieee80211com *ic, struct task *task)
784 {
785 	taskqueue_enqueue(ic->ic_tq, task);
786 }
787 
788 /*
789  * Wait for a queued task to complete.
790  */
791 static __inline void
792 ieee80211_draintask(struct ieee80211com *ic, struct task *task)
793 {
794 	taskqueue_drain(ic->ic_tq, task);
795 }
796 
797 /*
798  * Key update synchronization methods.  XXX should not be visible.
799  */
800 static __inline void
801 ieee80211_key_update_begin(struct ieee80211vap *vap)
802 {
803 	vap->iv_key_update_begin(vap);
804 }
805 static __inline void
806 ieee80211_key_update_end(struct ieee80211vap *vap)
807 {
808 	vap->iv_key_update_end(vap);
809 }
810 
811 /*
812  * XXX these need to be here for IEEE80211_F_DATAPAD
813  */
814 
815 /*
816  * Return the space occupied by the 802.11 header and any
817  * padding required by the driver.  This works for a
818  * management or data frame.
819  */
820 static __inline int
821 ieee80211_hdrspace(struct ieee80211com *ic, const void *data)
822 {
823 	int size = ieee80211_hdrsize(data);
824 	if (ic->ic_flags & IEEE80211_F_DATAPAD)
825 		size = roundup(size, sizeof(uint32_t));
826 	return size;
827 }
828 
829 /*
830  * Like ieee80211_hdrspace, but handles any type of frame.
831  */
832 static __inline int
833 ieee80211_anyhdrspace(struct ieee80211com *ic, const void *data)
834 {
835 	int size = ieee80211_anyhdrsize(data);
836 	if (ic->ic_flags & IEEE80211_F_DATAPAD)
837 		size = roundup(size, sizeof(uint32_t));
838 	return size;
839 }
840 
841 /*
842  * Notify a vap that beacon state has been updated.
843  */
844 static __inline void
845 ieee80211_beacon_notify(struct ieee80211vap *vap, int what)
846 {
847 	if (vap->iv_state == IEEE80211_S_RUN)
848 		vap->iv_update_beacon(vap, what);
849 }
850 
851 /*
852  * Calculate HT channel promotion flags for a channel.
853  * XXX belongs in ieee80211_ht.h but needs IEEE80211_FHT_*
854  */
855 static __inline int
856 ieee80211_htchanflags(const struct ieee80211_channel *c)
857 {
858 	return IEEE80211_IS_CHAN_HT40(c) ?
859 	    IEEE80211_FHT_HT | IEEE80211_FHT_USEHT40 :
860 	    IEEE80211_IS_CHAN_HT(c) ?  IEEE80211_FHT_HT : 0;
861 }
862 
863 /*
864  * Calculate VHT channel promotion flags for a channel.
865  * XXX belongs in ieee80211_vht.h but needs IEEE80211_FVHT_*
866  */
867 static __inline int
868 ieee80211_vhtchanflags(const struct ieee80211_channel *c)
869 {
870 
871 	if (IEEE80211_IS_CHAN_VHT160(c))
872 		return IEEE80211_FVHT_USEVHT160;
873 	if (IEEE80211_IS_CHAN_VHT80_80(c))
874 		return IEEE80211_FVHT_USEVHT80P80;
875 	if (IEEE80211_IS_CHAN_VHT80(c))
876 		return IEEE80211_FVHT_USEVHT80;
877 	if (IEEE80211_IS_CHAN_VHT40(c))
878 		return IEEE80211_FVHT_USEVHT40;
879 	if (IEEE80211_IS_CHAN_VHT(c))
880 		return IEEE80211_FVHT_VHT;
881 	return (0);
882 }
883 
884 /*
885  * Fetch the current TX power (cap) for the given node.
886  *
887  * This includes the node and ic/vap TX power limit as needed,
888  * but it doesn't take into account any per-rate limit.
889  */
890 static __inline uint16_t
891 ieee80211_get_node_txpower(struct ieee80211_node *ni)
892 {
893 	struct ieee80211com *ic = ni->ni_ic;
894 	uint16_t txpower;
895 
896 	txpower = ni->ni_txpower;
897 	txpower = MIN(txpower, ic->ic_txpowlimit);
898 	if (ic->ic_curchan != NULL) {
899 		txpower = MIN(txpower, 2 * ic->ic_curchan->ic_maxregpower);
900 		txpower = MIN(txpower, ic->ic_curchan->ic_maxpower);
901 	}
902 
903 	return (txpower);
904 }
905 
906 /*
907  * Debugging facilities compiled in when IEEE80211_DEBUG is defined.
908  *
909  * The intent is that any problem in the net80211 layer can be
910  * diagnosed by inspecting the statistics (dumped by the wlanstats
911  * program) and/or the msgs generated by net80211.  Messages are
912  * broken into functional classes and can be controlled with the
913  * wlandebug program.  Certain of these msg groups are for facilities
914  * that are no longer part of net80211 (e.g. IEEE80211_MSG_DOT1XSM).
915  */
916 #define	IEEE80211_MSG_11N	0x80000000	/* 11n mode debug */
917 #define	IEEE80211_MSG_DEBUG	0x40000000	/* IFF_DEBUG equivalent */
918 #define	IEEE80211_MSG_DUMPPKTS	0x20000000	/* IFF_LINK2 equivalant */
919 #define	IEEE80211_MSG_CRYPTO	0x10000000	/* crypto work */
920 #define	IEEE80211_MSG_INPUT	0x08000000	/* input handling */
921 #define	IEEE80211_MSG_XRATE	0x04000000	/* rate set handling */
922 #define	IEEE80211_MSG_ELEMID	0x02000000	/* element id parsing */
923 #define	IEEE80211_MSG_NODE	0x01000000	/* node handling */
924 #define	IEEE80211_MSG_ASSOC	0x00800000	/* association handling */
925 #define	IEEE80211_MSG_AUTH	0x00400000	/* authentication handling */
926 #define	IEEE80211_MSG_SCAN	0x00200000	/* scanning */
927 #define	IEEE80211_MSG_OUTPUT	0x00100000	/* output handling */
928 #define	IEEE80211_MSG_STATE	0x00080000	/* state machine */
929 #define	IEEE80211_MSG_POWER	0x00040000	/* power save handling */
930 #define	IEEE80211_MSG_HWMP	0x00020000	/* hybrid mesh protocol */
931 #define	IEEE80211_MSG_DOT1XSM	0x00010000	/* 802.1x state machine */
932 #define	IEEE80211_MSG_RADIUS	0x00008000	/* 802.1x radius client */
933 #define	IEEE80211_MSG_RADDUMP	0x00004000	/* dump 802.1x radius packets */
934 #define	IEEE80211_MSG_MESH	0x00002000	/* mesh networking */
935 #define	IEEE80211_MSG_WPA	0x00001000	/* WPA/RSN protocol */
936 #define	IEEE80211_MSG_ACL	0x00000800	/* ACL handling */
937 #define	IEEE80211_MSG_WME	0x00000400	/* WME protocol */
938 #define	IEEE80211_MSG_SUPERG	0x00000200	/* Atheros SuperG protocol */
939 #define	IEEE80211_MSG_DOTH	0x00000100	/* 802.11h support */
940 #define	IEEE80211_MSG_INACT	0x00000080	/* inactivity handling */
941 #define	IEEE80211_MSG_ROAM	0x00000040	/* sta-mode roaming */
942 #define	IEEE80211_MSG_RATECTL	0x00000020	/* tx rate control */
943 #define	IEEE80211_MSG_ACTION	0x00000010	/* action frame handling */
944 #define	IEEE80211_MSG_WDS	0x00000008	/* WDS handling */
945 #define	IEEE80211_MSG_IOCTL	0x00000004	/* ioctl handling */
946 #define	IEEE80211_MSG_TDMA	0x00000002	/* TDMA handling */
947 
948 #define	IEEE80211_MSG_ANY	0xffffffff	/* anything */
949 
950 #define	IEEE80211_MSG_BITS \
951 	"\20\2TDMA\3IOCTL\4WDS\5ACTION\6RATECTL\7ROAM\10INACT\11DOTH\12SUPERG" \
952 	"\13WME\14ACL\15WPA\16RADKEYS\17RADDUMP\20RADIUS\21DOT1XSM\22HWMP" \
953 	"\23POWER\24STATE\25OUTPUT\26SCAN\27AUTH\30ASSOC\31NODE\32ELEMID" \
954 	"\33XRATE\34INPUT\35CRYPTO\36DUPMPKTS\37DEBUG\04011N"
955 
956 #ifdef IEEE80211_DEBUG
957 #define	ieee80211_msg(_vap, _m)	((_vap)->iv_debug & (_m))
958 #define	IEEE80211_DPRINTF(_vap, _m, _fmt, ...) do {			\
959 	if (ieee80211_msg(_vap, _m))					\
960 		ieee80211_note(_vap, _fmt, __VA_ARGS__);		\
961 } while (0)
962 #define	IEEE80211_NOTE(_vap, _m, _ni, _fmt, ...) do {			\
963 	if (ieee80211_msg(_vap, _m))					\
964 		ieee80211_note_mac(_vap, (_ni)->ni_macaddr, _fmt, __VA_ARGS__);\
965 } while (0)
966 #define	IEEE80211_NOTE_MAC(_vap, _m, _mac, _fmt, ...) do {		\
967 	if (ieee80211_msg(_vap, _m))					\
968 		ieee80211_note_mac(_vap, _mac, _fmt, __VA_ARGS__);	\
969 } while (0)
970 #define	IEEE80211_NOTE_FRAME(_vap, _m, _wh, _fmt, ...) do {		\
971 	if (ieee80211_msg(_vap, _m))					\
972 		ieee80211_note_frame(_vap, _wh, _fmt, __VA_ARGS__);	\
973 } while (0)
974 void	ieee80211_note(const struct ieee80211vap *, const char *, ...);
975 void	ieee80211_note_mac(const struct ieee80211vap *,
976 		const uint8_t mac[IEEE80211_ADDR_LEN], const char *, ...);
977 void	ieee80211_note_frame(const struct ieee80211vap *,
978 		const struct ieee80211_frame *, const char *, ...);
979 #define	ieee80211_msg_debug(_vap) \
980 	((_vap)->iv_debug & IEEE80211_MSG_DEBUG)
981 #define	ieee80211_msg_dumppkts(_vap) \
982 	((_vap)->iv_debug & IEEE80211_MSG_DUMPPKTS)
983 #define	ieee80211_msg_input(_vap) \
984 	((_vap)->iv_debug & IEEE80211_MSG_INPUT)
985 #define	ieee80211_msg_radius(_vap) \
986 	((_vap)->iv_debug & IEEE80211_MSG_RADIUS)
987 #define	ieee80211_msg_dumpradius(_vap) \
988 	((_vap)->iv_debug & IEEE80211_MSG_RADDUMP)
989 #define	ieee80211_msg_dumpradkeys(_vap) \
990 	((_vap)->iv_debug & IEEE80211_MSG_RADKEYS)
991 #define	ieee80211_msg_scan(_vap) \
992 	((_vap)->iv_debug & IEEE80211_MSG_SCAN)
993 #define	ieee80211_msg_assoc(_vap) \
994 	((_vap)->iv_debug & IEEE80211_MSG_ASSOC)
995 
996 /*
997  * Emit a debug message about discarding a frame or information
998  * element.  One format is for extracting the mac address from
999  * the frame header; the other is for when a header is not
1000  * available or otherwise appropriate.
1001  */
1002 #define	IEEE80211_DISCARD(_vap, _m, _wh, _type, _fmt, ...) do {		\
1003 	if ((_vap)->iv_debug & (_m))					\
1004 		ieee80211_discard_frame(_vap, _wh, _type, _fmt, __VA_ARGS__);\
1005 } while (0)
1006 #define	IEEE80211_DISCARD_IE(_vap, _m, _wh, _type, _fmt, ...) do {	\
1007 	if ((_vap)->iv_debug & (_m))					\
1008 		ieee80211_discard_ie(_vap, _wh, _type, _fmt, __VA_ARGS__);\
1009 } while (0)
1010 #define	IEEE80211_DISCARD_MAC(_vap, _m, _mac, _type, _fmt, ...) do {	\
1011 	if ((_vap)->iv_debug & (_m))					\
1012 		ieee80211_discard_mac(_vap, _mac, _type, _fmt, __VA_ARGS__);\
1013 } while (0)
1014 
1015 void ieee80211_discard_frame(const struct ieee80211vap *,
1016 	const struct ieee80211_frame *, const char *type, const char *fmt, ...);
1017 void ieee80211_discard_ie(const struct ieee80211vap *,
1018 	const struct ieee80211_frame *, const char *type, const char *fmt, ...);
1019 void ieee80211_discard_mac(const struct ieee80211vap *,
1020 	const uint8_t mac[IEEE80211_ADDR_LEN], const char *type,
1021 	const char *fmt, ...);
1022 #else
1023 #define	IEEE80211_DPRINTF(_vap, _m, _fmt, ...)
1024 #define	IEEE80211_NOTE(_vap, _m, _ni, _fmt, ...)
1025 #define	IEEE80211_NOTE_FRAME(_vap, _m, _wh, _fmt, ...)
1026 #define	IEEE80211_NOTE_MAC(_vap, _m, _mac, _fmt, ...)
1027 #define	ieee80211_msg_dumppkts(_vap)	0
1028 #define	ieee80211_msg(_vap, _m)		0
1029 
1030 #define	IEEE80211_DISCARD(_vap, _m, _wh, _type, _fmt, ...)
1031 #define	IEEE80211_DISCARD_IE(_vap, _m, _wh, _type, _fmt, ...)
1032 #define	IEEE80211_DISCARD_MAC(_vap, _m, _mac, _type, _fmt, ...)
1033 #endif
1034 
1035 #endif /* _NET80211_IEEE80211_VAR_H_ */
1036