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: head/sys/net80211/ieee80211_var.h 206358 2010-04-07 15:29:13Z rpaulo $
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 #elif defined(__DragonFly__)
42 #include <netproto/802_11/ieee80211_dragonfly.h>
43 #else
44 #error	"No support for your operating system!"
45 #endif
46 
47 #include <netproto/802_11/_ieee80211.h>
48 #include <netproto/802_11/ieee80211.h>
49 #include <netproto/802_11/ieee80211_ageq.h>
50 #include <netproto/802_11/ieee80211_crypto.h>
51 #include <netproto/802_11/ieee80211_dfs.h>
52 #include <netproto/802_11/ieee80211_ioctl.h>		/* for ieee80211_stats */
53 #include <netproto/802_11/ieee80211_phy.h>
54 #include <netproto/802_11/ieee80211_power.h>
55 #include <netproto/802_11/ieee80211_node.h>
56 #include <netproto/802_11/ieee80211_proto.h>
57 #include <netproto/802_11/ieee80211_radiotap.h>
58 #include <netproto/802_11/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 #define	IEEE80211_TU_TO_TICKS(x)(((x) * 1024 * hz) / (1000 * 1000))
90 
91 /*
92  * 802.11 control state is split into a common portion that maps
93  * 1-1 to a physical device and one or more "Virtual AP's" (VAP)
94  * that are bound to an ieee80211com instance and share a single
95  * underlying device.  Each VAP has a corresponding OS device
96  * entity through which traffic flows and that applications use
97  * for issuing ioctls, etc.
98  */
99 
100 /*
101  * Data common to one or more virtual AP's.  State shared by
102  * the underlying device and the net80211 layer is exposed here;
103  * e.g. device-specific callbacks.
104  */
105 struct ieee80211vap;
106 typedef void (*ieee80211vap_attach)(struct ieee80211vap *);
107 
108 struct ieee80211_appie {
109 	uint16_t		ie_len;		/* size of ie_data */
110 	uint8_t			ie_data[];	/* user-specified IE's */
111 };
112 
113 struct ieee80211_tdma_param;
114 struct ieee80211_rate_table;
115 struct ieee80211_tx_ampdu;
116 struct ieee80211_rx_ampdu;
117 struct ieee80211_superg;
118 struct ieee80211_frame;
119 
120 struct ieee80211com {
121 	struct ifnet		*ic_ifp;	/* associated device */
122 	TAILQ_HEAD(, ieee80211vap) ic_vaps;	/* list of vap instances */
123 	int			ic_headroom;	/* driver tx headroom needs */
124 	enum ieee80211_phytype	ic_phytype;	/* XXX wrong for multi-mode */
125 	enum ieee80211_opmode	ic_opmode;	/* operation mode */
126 	struct ifmedia		ic_media;	/* interface media config */
127 	struct callout		ic_inact;	/* inactivity processing */
128 	struct taskqueue	*ic_tq;		/* deferred state thread */
129 	struct task		ic_parent_task;	/* deferred parent processing */
130 	struct task		ic_promisc_task;/* deferred promisc update */
131 	struct task		ic_mcast_task;	/* deferred mcast update */
132 	struct task		ic_chan_task;	/* deferred channel change */
133 	struct task		ic_bmiss_task;	/* deferred beacon miss hndlr */
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 
218 	/* optional state for Atheros SuperG protocol extensions */
219 	struct ieee80211_superg	*ic_superg;
220 
221 	/* radiotap handling */
222 	struct ieee80211_radiotap_header *ic_th;/* tx radiotap headers */
223 	void			*ic_txchan;	/* channel state in ic_th */
224 	struct ieee80211_radiotap_header *ic_rh;/* rx radiotap headers */
225 	void			*ic_rxchan;	/* channel state in ic_rh */
226 	int			ic_montaps;	/* active monitor mode taps */
227 
228 	/* virtual ap create/delete */
229 	struct ieee80211vap*	(*ic_vap_create)(struct ieee80211com *,
230 				    const char name[IFNAMSIZ], int unit,
231 				    enum ieee80211_opmode opmode, int flags,
232 				    const uint8_t bssid[IEEE80211_ADDR_LEN],
233 				    const uint8_t macaddr[IEEE80211_ADDR_LEN]);
234 	void			(*ic_vap_delete)(struct ieee80211vap *);
235 	/* operating mode attachment */
236 	ieee80211vap_attach	ic_vattach[IEEE80211_OPMODE_MAX];
237 	/* return hardware/radio capabilities */
238 	void			(*ic_getradiocaps)(struct ieee80211com *,
239 				    int, int *, struct ieee80211_channel []);
240 	/* check and/or prepare regdomain state change */
241 	int			(*ic_setregdomain)(struct ieee80211com *,
242 				    struct ieee80211_regdomain *,
243 				    int, struct ieee80211_channel []);
244 	/* send/recv 802.11 management frame */
245 	int			(*ic_send_mgmt)(struct ieee80211_node *,
246 				     int, int);
247 	/* send raw 802.11 frame */
248 	int			(*ic_raw_xmit)(struct ieee80211_node *,
249 				    struct mbuf *,
250 				    const struct ieee80211_bpf_params *);
251 	/* update device state for 802.11 slot time change */
252 	void			(*ic_updateslot)(struct ifnet *);
253 	/* handle multicast state changes */
254 	void			(*ic_update_mcast)(struct ifnet *);
255 	/* handle promiscuous mode changes */
256 	void			(*ic_update_promisc)(struct ifnet *);
257 	/* new station association callback/notification */
258 	void			(*ic_newassoc)(struct ieee80211_node *, int);
259 	/* TDMA update notification */
260 	void			(*ic_tdma_update)(struct ieee80211_node *,
261 				    const struct ieee80211_tdma_param *, int);
262 	/* node state management */
263 	struct ieee80211_node*	(*ic_node_alloc)(struct ieee80211vap *,
264 				    const uint8_t [IEEE80211_ADDR_LEN]);
265 	void			(*ic_node_free)(struct ieee80211_node *);
266 	void			(*ic_node_cleanup)(struct ieee80211_node *);
267 	void			(*ic_node_age)(struct ieee80211_node *);
268 	void			(*ic_node_drain)(struct ieee80211_node *);
269 	int8_t			(*ic_node_getrssi)(const struct ieee80211_node*);
270 	void			(*ic_node_getsignal)(const struct ieee80211_node*,
271 				    int8_t *, int8_t *);
272 	void			(*ic_node_getmimoinfo)(
273 				    const struct ieee80211_node*,
274 				    struct ieee80211_mimo_info *);
275 	/* scanning support */
276 	void			(*ic_scan_start)(struct ieee80211com *);
277 	void			(*ic_scan_end)(struct ieee80211com *);
278 	void			(*ic_set_channel)(struct ieee80211com *);
279 	void			(*ic_scan_curchan)(struct ieee80211_scan_state *,
280 				    unsigned long);
281 	void			(*ic_scan_mindwell)(struct ieee80211_scan_state *);
282 
283 	/*
284 	 * 802.11n ADDBA support.  A simple/generic implementation
285 	 * of A-MPDU tx aggregation is provided; the driver may
286 	 * override these methods to provide their own support.
287 	 * A-MPDU rx re-ordering happens automatically if the
288 	 * driver passes out-of-order frames to ieee80211_input
289 	 * from an assocated HT station.
290 	 */
291 	int			(*ic_recv_action)(struct ieee80211_node *,
292 				    const struct ieee80211_frame *,
293 				    const uint8_t *frm, const uint8_t *efrm);
294 	int			(*ic_send_action)(struct ieee80211_node *,
295 				    int category, int action, void *);
296 	/* check if A-MPDU should be enabled this station+ac */
297 	int			(*ic_ampdu_enable)(struct ieee80211_node *,
298 				    struct ieee80211_tx_ampdu *);
299 	/* start/stop doing A-MPDU tx aggregation for a station */
300 	int			(*ic_addba_request)(struct ieee80211_node *,
301 				    struct ieee80211_tx_ampdu *,
302 				    int dialogtoken, int baparamset,
303 				    int batimeout);
304 	int			(*ic_addba_response)(struct ieee80211_node *,
305 				    struct ieee80211_tx_ampdu *,
306 				    int status, int baparamset, int batimeout);
307 	void			(*ic_addba_stop)(struct ieee80211_node *,
308 				    struct ieee80211_tx_ampdu *);
309 	/* BAR response received */
310 	void			(*ic_bar_response)(struct ieee80211_node *,
311 				    struct ieee80211_tx_ampdu *, int status);
312 	/* start/stop doing A-MPDU rx processing for a station */
313 	int			(*ic_ampdu_rx_start)(struct ieee80211_node *,
314 				    struct ieee80211_rx_ampdu *, int baparamset,
315 				    int batimeout, int baseqctl);
316 	void			(*ic_ampdu_rx_stop)(struct ieee80211_node *,
317 				    struct ieee80211_rx_ampdu *);
318 	uint64_t		ic_spare[7];
319 	uint32_t		ic_spare2;
320 };
321 
322 struct ieee80211_aclator;
323 struct ieee80211_tdma_state;
324 struct ieee80211_mesh_state;
325 struct ieee80211_hwmp_state;
326 
327 struct ieee80211vap {
328 	struct ifmedia		iv_media;	/* interface media config */
329 	struct ifnet		*iv_ifp;	/* associated device */
330 	struct bpf_if		*iv_rawbpf;	/* packet filter structure */
331 	struct sysctl_ctx_list	*iv_sysctl;	/* dynamic sysctl context */
332 	struct sysctl_oid	*iv_oid;	/* net.wlan.X sysctl oid */
333 
334 	TAILQ_ENTRY(ieee80211vap) iv_next;	/* list of vap instances */
335 	struct ieee80211com	*iv_ic;		/* back ptr to common state */
336 	uint32_t		iv_debug;	/* debug msg flags */
337 	struct ieee80211_stats	iv_stats;	/* statistics */
338 
339 	uint8_t			iv_myaddr[IEEE80211_ADDR_LEN];
340 	uint32_t		iv_flags;	/* state flags */
341 	uint32_t		iv_flags_ext;	/* extended state flags */
342 	uint32_t		iv_flags_ht;	/* HT state flags */
343 	uint32_t		iv_flags_ven;	/* vendor state flags */
344 	uint32_t		iv_caps;	/* capabilities */
345 	uint32_t		iv_htcaps;	/* HT capabilities */
346 	uint32_t		iv_htextcaps;	/* HT extended capabilities */
347 	enum ieee80211_opmode	iv_opmode;	/* operation mode */
348 	enum ieee80211_state	iv_state;	/* state machine state */
349 	enum ieee80211_state	iv_nstate;	/* pending state */
350 	int			iv_nstate_arg;	/* pending state arg */
351 	struct task		iv_nstate_task;	/* deferred state processing */
352 	struct task		iv_swbmiss_task;/* deferred iv_bmiss call */
353 	struct callout		iv_mgtsend;	/* mgmt frame response timer */
354 						/* inactivity timer settings */
355 	int			iv_inact_init;	/* setting for new station */
356 	int			iv_inact_auth;	/* auth but not assoc setting */
357 	int			iv_inact_run;	/* authorized setting */
358 	int			iv_inact_probe;	/* inactive probe time */
359 
360 	int			iv_des_nssid;	/* # desired ssids */
361 	struct ieee80211_scan_ssid iv_des_ssid[1];/* desired ssid table */
362 	uint8_t			iv_des_bssid[IEEE80211_ADDR_LEN];
363 	struct ieee80211_channel *iv_des_chan;	/* desired channel */
364 	uint16_t		iv_des_mode;	/* desired mode */
365 	int			iv_nicknamelen;	/* XXX junk */
366 	uint8_t			iv_nickname[IEEE80211_NWID_LEN];
367 	u_int			iv_bgscanidle;	/* bg scan idle threshold */
368 	u_int			iv_bgscanintvl;	/* bg scan min interval */
369 	u_int			iv_scanvalid;	/* scan cache valid threshold */
370 	u_int			iv_scanreq_duration;
371 	u_int			iv_scanreq_mindwell;
372 	u_int			iv_scanreq_maxdwell;
373 	uint16_t		iv_scanreq_flags;/* held scan request params */
374 	uint8_t			iv_scanreq_nssid;
375 	struct ieee80211_scan_ssid iv_scanreq_ssid[IEEE80211_SCAN_MAX_SSID];
376 	/* sta-mode roaming state */
377 	enum ieee80211_roamingmode iv_roaming;	/* roaming mode */
378 	struct ieee80211_roamparam iv_roamparms[IEEE80211_MODE_MAX];
379 
380 	uint8_t			iv_bmissthreshold;
381 	uint8_t			iv_bmiss_count;	/* current beacon miss count */
382 	int			iv_bmiss_max;	/* max bmiss before scan */
383 	uint16_t		iv_swbmiss_count;/* beacons in last period */
384 	uint16_t		iv_swbmiss_period;/* s/w bmiss period */
385 	struct callout		iv_swbmiss;	/* s/w beacon miss timer */
386 
387 	int			iv_ampdu_rxmax;	/* A-MPDU rx limit (bytes) */
388 	int			iv_ampdu_density;/* A-MPDU density */
389 	int			iv_ampdu_limit;	/* A-MPDU tx limit (bytes) */
390 	int			iv_amsdu_limit;	/* A-MSDU tx limit (bytes) */
391 	u_int			iv_ampdu_mintraffic[WME_NUM_AC];
392 
393 	uint32_t		*iv_aid_bitmap;	/* association id map */
394 	uint16_t		iv_max_aid;
395 	uint16_t		iv_sta_assoc;	/* stations associated */
396 	uint16_t		iv_ps_sta;	/* stations in power save */
397 	uint16_t		iv_ps_pending;	/* ps sta's w/ pending frames */
398 	uint16_t		iv_txseq;	/* mcast xmit seq# space */
399 	uint16_t		iv_tim_len;	/* ic_tim_bitmap size (bytes) */
400 	uint8_t			*iv_tim_bitmap;	/* power-save stations w/ data*/
401 	uint8_t			iv_dtim_period;	/* DTIM period */
402 	uint8_t			iv_dtim_count;	/* DTIM count from last bcn */
403 						/* set/unset aid pwrsav state */
404 	int			iv_csa_count;	/* count for doing CSA */
405 
406 	struct ieee80211_node	*iv_bss;	/* information for this node */
407 	struct ieee80211_txparam iv_txparms[IEEE80211_MODE_MAX];
408 	uint16_t		iv_rtsthreshold;
409 	uint16_t		iv_fragthreshold;
410 	int			iv_inact_timer;	/* inactivity timer wait */
411 	/* application-specified IE's to attach to mgt frames */
412 	struct ieee80211_appie	*iv_appie_beacon;
413 	struct ieee80211_appie	*iv_appie_probereq;
414 	struct ieee80211_appie	*iv_appie_proberesp;
415 	struct ieee80211_appie	*iv_appie_assocreq;
416 	struct ieee80211_appie	*iv_appie_assocresp;
417 	struct ieee80211_appie	*iv_appie_wpa;
418 	uint8_t			*iv_wpa_ie;
419 	uint8_t			*iv_rsn_ie;
420 	uint16_t		iv_max_keyix;	/* max h/w key index */
421 	ieee80211_keyix		iv_def_txkey;	/* default/group tx key index */
422 	struct ieee80211_key	iv_nw_keys[IEEE80211_WEP_NKID];
423 	int			(*iv_key_alloc)(struct ieee80211vap *,
424 				    struct ieee80211_key *,
425 				    ieee80211_keyix *, ieee80211_keyix *);
426 	int			(*iv_key_delete)(struct ieee80211vap *,
427 				    const struct ieee80211_key *);
428 	int			(*iv_key_set)(struct ieee80211vap *,
429 				    const struct ieee80211_key *,
430 				    const uint8_t mac[IEEE80211_ADDR_LEN]);
431 	void			(*iv_key_update_begin)(struct ieee80211vap *);
432 	void			(*iv_key_update_end)(struct ieee80211vap *);
433 
434 	const struct ieee80211_authenticator *iv_auth; /* authenticator glue */
435 	void			*iv_ec;		/* private auth state */
436 
437 	const struct ieee80211_aclator *iv_acl;	/* acl glue */
438 	void			*iv_as;		/* private aclator state */
439 
440 	const struct ieee80211_ratectl *iv_rate;
441 	void			*iv_rs;		/* private ratectl state */
442 
443 	struct ieee80211_tdma_state *iv_tdma;	/* tdma state */
444 	struct ieee80211_mesh_state *iv_mesh;	/* MBSS state */
445 	struct ieee80211_hwmp_state *iv_hwmp;	/* HWMP state */
446 
447 	/* operate-mode detach hook */
448 	void			(*iv_opdetach)(struct ieee80211vap *);
449 	/* receive processing */
450 	int			(*iv_input)(struct ieee80211_node *,
451 				    struct mbuf *, int, int);
452 	void			(*iv_recv_mgmt)(struct ieee80211_node *,
453 				    struct mbuf *, int, int, int);
454 	void			(*iv_recv_ctl)(struct ieee80211_node *,
455 				    struct mbuf *, int);
456 	void			(*iv_deliver_data)(struct ieee80211vap *,
457 				    struct ieee80211_node *, struct mbuf *);
458 #if 0
459 	/* send processing */
460 	int			(*iv_send_mgmt)(struct ieee80211_node *,
461 				     int, int);
462 #endif
463 	/* beacon miss processing */
464 	void			(*iv_bmiss)(struct ieee80211vap *);
465 	/* reset device state after 802.11 parameter/state change */
466 	int			(*iv_reset)(struct ieee80211vap *, u_long);
467 	/* [schedule] beacon frame update */
468 	void			(*iv_update_beacon)(struct ieee80211vap *, int);
469 	/* power save handling */
470 	void			(*iv_update_ps)(struct ieee80211vap *, int);
471 	int			(*iv_set_tim)(struct ieee80211_node *, int);
472 	void			(*iv_node_ps)(struct ieee80211_node *, int);
473 	void			(*iv_sta_ps)(struct ieee80211vap *, int);
474 	/* state machine processing */
475 	int			(*iv_newstate)(struct ieee80211vap *,
476 				    enum ieee80211_state, int);
477 	/* 802.3 output method for raw frame xmit */
478 	int			(*iv_output)(struct ifnet *, struct mbuf *,
479 				    struct sockaddr *, struct rtentry *);
480 	uint64_t		iv_spare[6];
481 };
482 MALLOC_DECLARE(M_80211_VAP);
483 
484 #define	IEEE80211_ADDR_EQ(a1,a2)	(memcmp(a1,a2,IEEE80211_ADDR_LEN) == 0)
485 #define	IEEE80211_ADDR_COPY(dst,src)	memcpy(dst,src,IEEE80211_ADDR_LEN)
486 
487 /* ic_flags/iv_flags */
488 #define	IEEE80211_F_TURBOP	0x00000001	/* CONF: ATH Turbo enabled*/
489 #define	IEEE80211_F_COMP	0x00000002	/* CONF: ATH comp enabled */
490 #define	IEEE80211_F_FF		0x00000004	/* CONF: ATH FF enabled */
491 #define	IEEE80211_F_BURST	0x00000008	/* CONF: bursting enabled */
492 /* NB: this is intentionally setup to be IEEE80211_CAPINFO_PRIVACY */
493 #define	IEEE80211_F_PRIVACY	0x00000010	/* CONF: privacy enabled */
494 #define	IEEE80211_F_PUREG	0x00000020	/* CONF: 11g w/o 11b sta's */
495 #define	IEEE80211_F_SCAN	0x00000080	/* STATUS: scanning */
496 #define	IEEE80211_F_ASCAN	0x00000100	/* STATUS: active scan */
497 #define	IEEE80211_F_SIBSS	0x00000200	/* STATUS: start IBSS */
498 /* NB: this is intentionally setup to be IEEE80211_CAPINFO_SHORT_SLOTTIME */
499 #define	IEEE80211_F_SHSLOT	0x00000400	/* STATUS: use short slot time*/
500 #define	IEEE80211_F_PMGTON	0x00000800	/* CONF: Power mgmt enable */
501 #define	IEEE80211_F_DESBSSID	0x00001000	/* CONF: des_bssid is set */
502 #define	IEEE80211_F_WME		0x00002000	/* CONF: enable WME use */
503 #define	IEEE80211_F_BGSCAN	0x00004000	/* CONF: bg scan enabled (???)*/
504 #define	IEEE80211_F_SWRETRY	0x00008000	/* CONF: sw tx retry enabled */
505 #define IEEE80211_F_TXPOW_FIXED	0x00010000	/* TX Power: fixed rate */
506 #define	IEEE80211_F_IBSSON	0x00020000	/* CONF: IBSS creation enable */
507 #define	IEEE80211_F_SHPREAMBLE	0x00040000	/* STATUS: use short preamble */
508 #define	IEEE80211_F_DATAPAD	0x00080000	/* CONF: do alignment pad */
509 #define	IEEE80211_F_USEPROT	0x00100000	/* STATUS: protection enabled */
510 #define	IEEE80211_F_USEBARKER	0x00200000	/* STATUS: use barker preamble*/
511 #define	IEEE80211_F_CSAPENDING	0x00400000	/* STATUS: chan switch pending*/
512 #define	IEEE80211_F_WPA1	0x00800000	/* CONF: WPA enabled */
513 #define	IEEE80211_F_WPA2	0x01000000	/* CONF: WPA2 enabled */
514 #define	IEEE80211_F_WPA		0x01800000	/* CONF: WPA/WPA2 enabled */
515 #define	IEEE80211_F_DROPUNENC	0x02000000	/* CONF: drop unencrypted */
516 #define	IEEE80211_F_COUNTERM	0x04000000	/* CONF: TKIP countermeasures */
517 #define	IEEE80211_F_HIDESSID	0x08000000	/* CONF: hide SSID in beacon */
518 #define	IEEE80211_F_NOBRIDGE	0x10000000	/* CONF: dis. internal bridge */
519 #define	IEEE80211_F_PCF		0x20000000	/* CONF: PCF enabled */
520 #define	IEEE80211_F_DOTH	0x40000000	/* CONF: 11h enabled */
521 #define	IEEE80211_F_DWDS	0x80000000	/* CONF: Dynamic WDS enabled */
522 
523 #define	IEEE80211_F_BITS \
524 	"\20\1TURBOP\2COMP\3FF\4BURST\5PRIVACY\6PUREG\10SCAN\11ASCAN\12SIBSS" \
525 	"\13SHSLOT\14PMGTON\15DESBSSID\16WME\17BGSCAN\20SWRETRY\21TXPOW_FIXED" \
526 	"\22IBSSON\23SHPREAMBLE\24DATAPAD\25USEPROT\26USERBARKER\27CSAPENDING" \
527 	"\30WPA1\31WPA2\32DROPUNENC\33COUNTERM\34HIDESSID\35NOBRIDG\36PCF" \
528 	"\37DOTH\40DWDS"
529 
530 /* Atheros protocol-specific flags */
531 #define	IEEE80211_F_ATHEROS \
532 	(IEEE80211_F_FF | IEEE80211_F_COMP | IEEE80211_F_TURBOP)
533 /* Check if an Atheros capability was negotiated for use */
534 #define	IEEE80211_ATH_CAP(vap, ni, bit) \
535 	((vap)->iv_flags & (ni)->ni_ath_flags & (bit))
536 
537 /* ic_flags_ext/iv_flags_ext */
538 #define	IEEE80211_FEXT_INACT	 0x00000002	/* CONF: sta inact handling */
539 #define	IEEE80211_FEXT_SCANWAIT	 0x00000004	/* STATUS: awaiting scan */
540 /* 0x00000006 reserved */
541 #define	IEEE80211_FEXT_BGSCAN	 0x00000008	/* STATUS: complete bgscan */
542 #define	IEEE80211_FEXT_WPS	 0x00000010	/* CONF: WPS enabled */
543 #define	IEEE80211_FEXT_TSN 	 0x00000020	/* CONF: TSN enabled */
544 #define	IEEE80211_FEXT_SCANREQ	 0x00000040	/* STATUS: scan req params */
545 #define	IEEE80211_FEXT_RESUME	 0x00000080	/* STATUS: start on resume */
546 #define	IEEE80211_FEXT_4ADDR	 0x00000100	/* CONF: apply 4-addr encap */
547 #define	IEEE80211_FEXT_NONERP_PR 0x00000200	/* STATUS: non-ERP sta present*/
548 #define	IEEE80211_FEXT_SWBMISS	 0x00000400	/* CONF: do bmiss in s/w */
549 #define	IEEE80211_FEXT_DFS	 0x00000800	/* CONF: DFS enabled */
550 #define	IEEE80211_FEXT_DOTD	 0x00001000	/* CONF: 11d enabled */
551 #define	IEEE80211_FEXT_STATEWAIT 0x00002000	/* STATUS: awaiting state chg */
552 #define	IEEE80211_FEXT_REINIT	 0x00004000	/* STATUS: INIT state first */
553 #define	IEEE80211_FEXT_BPF	 0x00008000	/* STATUS: BPF tap present */
554 /* NB: immutable: should be set only when creating a vap */
555 #define	IEEE80211_FEXT_WDSLEGACY 0x00010000	/* CONF: legacy WDS operation */
556 #define	IEEE80211_FEXT_PROBECHAN 0x00020000	/* CONF: probe passive channel*/
557 #define	IEEE80211_FEXT_UNIQMAC	 0x00040000	/* CONF: user or computed mac */
558 
559 #define	IEEE80211_FEXT_BITS \
560 	"\20\2INACT\3SCANWAIT\4BGSCAN\5WPS\6TSN\7SCANREQ\10RESUME" \
561 	"\0114ADDR\12NONEPR_PR\13SWBMISS\14DFS\15DOTD\16STATEWAIT\17REINIT" \
562 	"\20BPF\21WDSLEGACY\22PROBECHAN\23UNIQMAC"
563 
564 /* ic_flags_ht/iv_flags_ht */
565 #define	IEEE80211_FHT_NONHT_PR	 0x00000001	/* STATUS: non-HT sta present */
566 #define	IEEE80211_FHT_GF  	 0x00040000	/* CONF: Greenfield enabled */
567 #define	IEEE80211_FHT_HT	 0x00080000	/* CONF: HT supported */
568 #define	IEEE80211_FHT_AMPDU_TX	 0x00100000	/* CONF: A-MPDU tx supported */
569 #define	IEEE80211_FHT_AMPDU_RX	 0x00200000	/* CONF: A-MPDU rx supported */
570 #define	IEEE80211_FHT_AMSDU_TX	 0x00400000	/* CONF: A-MSDU tx supported */
571 #define	IEEE80211_FHT_AMSDU_RX	 0x00800000	/* CONF: A-MSDU rx supported */
572 #define	IEEE80211_FHT_USEHT40	 0x01000000	/* CONF: 20/40 use enabled */
573 #define	IEEE80211_FHT_PUREN	 0x02000000	/* CONF: 11n w/o legacy sta's */
574 #define	IEEE80211_FHT_SHORTGI20	 0x04000000	/* CONF: short GI in HT20 */
575 #define	IEEE80211_FHT_SHORTGI40	 0x08000000	/* CONF: short GI in HT40 */
576 #define	IEEE80211_FHT_HTCOMPAT 	 0x10000000	/* CONF: HT vendor OUI's */
577 #define	IEEE80211_FHT_RIFS  	 0x20000000	/* CONF: RIFS enabled */
578 #define	IEEE80211_FHT_STBC_TX 	 0x40000000	/* CONF: STBC tx enabled */
579 #define	IEEE80211_FHT_STBC_RX 	 0x80000000	/* CONF: STBC rx enabled */
580 
581 #define	IEEE80211_FHT_BITS \
582 	"\20\1NONHT_PR" \
583 	"\23GF\24HT\25AMDPU_TX\26AMPDU_TX" \
584 	"\27AMSDU_TX\30AMSDU_RX\31USEHT40\32PUREN\33SHORTGI20\34SHORTGI40" \
585 	"\35HTCOMPAT\36RIFS\37STBC_TX\40STBC_RX"
586 
587 #define	IEEE80211_FVEN_BITS	"\20"
588 
589 /* ic_caps/iv_caps: device driver capabilities */
590 /* 0x2e available */
591 #define	IEEE80211_C_STA		0x00000001	/* CAPABILITY: STA available */
592 #define	IEEE80211_C_8023ENCAP	0x00000002	/* CAPABILITY: 802.3 encap */
593 #define	IEEE80211_C_FF		0x00000040	/* CAPABILITY: ATH FF avail */
594 #define	IEEE80211_C_TURBOP	0x00000080	/* CAPABILITY: ATH Turbo avail*/
595 #define	IEEE80211_C_IBSS	0x00000100	/* CAPABILITY: IBSS available */
596 #define	IEEE80211_C_PMGT	0x00000200	/* CAPABILITY: Power mgmt */
597 #define	IEEE80211_C_HOSTAP	0x00000400	/* CAPABILITY: HOSTAP avail */
598 #define	IEEE80211_C_AHDEMO	0x00000800	/* CAPABILITY: Old Adhoc Demo */
599 #define	IEEE80211_C_SWRETRY	0x00001000	/* CAPABILITY: sw tx retry */
600 #define	IEEE80211_C_TXPMGT	0x00002000	/* CAPABILITY: tx power mgmt */
601 #define	IEEE80211_C_SHSLOT	0x00004000	/* CAPABILITY: short slottime */
602 #define	IEEE80211_C_SHPREAMBLE	0x00008000	/* CAPABILITY: short preamble */
603 #define	IEEE80211_C_MONITOR	0x00010000	/* CAPABILITY: monitor mode */
604 #define	IEEE80211_C_DFS		0x00020000	/* CAPABILITY: DFS/radar avail*/
605 #define	IEEE80211_C_MBSS	0x00040000	/* CAPABILITY: MBSS available */
606 #define IEEE80211_C_SWSLEEP	0x00080000	/* CAPABILITY: do sleep here */
607 /* 0x7c0000 available */
608 #define	IEEE80211_C_WPA1	0x00800000	/* CAPABILITY: WPA1 avail */
609 #define	IEEE80211_C_WPA2	0x01000000	/* CAPABILITY: WPA2 avail */
610 #define	IEEE80211_C_WPA		0x01800000	/* CAPABILITY: WPA1+WPA2 avail*/
611 #define	IEEE80211_C_BURST	0x02000000	/* CAPABILITY: frame bursting */
612 #define	IEEE80211_C_WME		0x04000000	/* CAPABILITY: WME avail */
613 #define	IEEE80211_C_WDS		0x08000000	/* CAPABILITY: 4-addr support */
614 /* 0x10000000 reserved */
615 #define	IEEE80211_C_BGSCAN	0x20000000	/* CAPABILITY: bg scanning */
616 #define	IEEE80211_C_TXFRAG	0x40000000	/* CAPABILITY: tx fragments */
617 #define	IEEE80211_C_TDMA	0x80000000	/* CAPABILITY: TDMA avail */
618 /* XXX protection/barker? */
619 
620 #define	IEEE80211_C_OPMODE \
621 	(IEEE80211_C_STA | IEEE80211_C_IBSS | IEEE80211_C_HOSTAP | \
622 	 IEEE80211_C_AHDEMO | IEEE80211_C_MONITOR | IEEE80211_C_WDS | \
623 	 IEEE80211_C_TDMA | IEEE80211_C_MBSS)
624 
625 #define	IEEE80211_C_BITS \
626 	"\20\1STA\002803ENCAP\7FF\10TURBOP\11IBSS\12PMGT" \
627 	"\13HOSTAP\14AHDEMO\15SWRETRY\16TXPMGT\17SHSLOT\20SHPREAMBLE" \
628 	"\21MONITOR\22DFS\23MBSS\30WPA1\31WPA2\32BURST\33WME\34WDS\36BGSCAN" \
629 	"\37TXFRAG\40TDMA"
630 
631 /*
632  * ic_htcaps/iv_htcaps: HT-specific device/driver capabilities
633  *
634  * NB: the low 16-bits are the 802.11 definitions, the upper
635  *     16-bits are used to define s/w/driver capabilities.
636  */
637 #define	IEEE80211_HTC_AMPDU	0x00010000	/* CAPABILITY: A-MPDU tx */
638 #define	IEEE80211_HTC_AMSDU	0x00020000	/* CAPABILITY: A-MSDU tx */
639 /* NB: HT40 is implied by IEEE80211_HTCAP_CHWIDTH40 */
640 #define	IEEE80211_HTC_HT	0x00040000	/* CAPABILITY: HT operation */
641 #define	IEEE80211_HTC_SMPS	0x00080000	/* CAPABILITY: MIMO power save*/
642 #define	IEEE80211_HTC_RIFS	0x00100000	/* CAPABILITY: RIFS support */
643 
644 #define	IEEE80211_C_HTCAP_BITS \
645 	"\20\1LDPC\2CHWIDTH40\5GREENFIELD\6SHORTGI20\7SHORTGI40\10TXSTBC" \
646 	"\21AMPDU\22AMSDU\23HT\24SMPS\25RIFS"
647 
648 void	ieee80211_ifattach(struct ieee80211com *,
649 		const uint8_t macaddr[IEEE80211_ADDR_LEN]);
650 void	ieee80211_ifdetach(struct ieee80211com *);
651 int	ieee80211_vap_setup(struct ieee80211com *, struct ieee80211vap *,
652 		const char name[IFNAMSIZ], int unit, int opmode, int flags,
653 		const uint8_t bssid[IEEE80211_ADDR_LEN],
654 		const uint8_t macaddr[IEEE80211_ADDR_LEN]);
655 int	ieee80211_vap_attach(struct ieee80211vap *,
656 		ifm_change_cb_t, ifm_stat_cb_t);
657 void	ieee80211_vap_detach(struct ieee80211vap *);
658 const struct ieee80211_rateset *ieee80211_get_suprates(struct ieee80211com *ic,
659 		const struct ieee80211_channel *);
660 void	ieee80211_announce(struct ieee80211com *);
661 void	ieee80211_announce_channels(struct ieee80211com *);
662 void	ieee80211_drain(struct ieee80211com *);
663 void	ieee80211_media_init(struct ieee80211com *);
664 struct ieee80211com *ieee80211_find_vap(const uint8_t mac[IEEE80211_ADDR_LEN]);
665 int	ieee80211_media_change(struct ifnet *);
666 void	ieee80211_media_status(struct ifnet *, struct ifmediareq *);
667 int	ieee80211_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
668 int	ieee80211_rate2media(struct ieee80211com *, int,
669 		enum ieee80211_phymode);
670 int	ieee80211_media2rate(int);
671 int	ieee80211_mhz2ieee(u_int, u_int);
672 int	ieee80211_chan2ieee(struct ieee80211com *,
673 		const struct ieee80211_channel *);
674 u_int	ieee80211_ieee2mhz(u_int, u_int);
675 struct ieee80211_channel *ieee80211_find_channel(struct ieee80211com *,
676 		int freq, int flags);
677 struct ieee80211_channel *ieee80211_find_channel_byieee(struct ieee80211com *,
678 		int ieee, int flags);
679 int	ieee80211_setmode(struct ieee80211com *, enum ieee80211_phymode);
680 enum ieee80211_phymode ieee80211_chan2mode(const struct ieee80211_channel *);
681 uint32_t ieee80211_mac_hash(const struct ieee80211com *,
682 		const uint8_t addr[IEEE80211_ADDR_LEN]);
683 
684 void	ieee80211_radiotap_attach(struct ieee80211com *,
685 	    struct ieee80211_radiotap_header *th, int tlen,
686 		uint32_t tx_radiotap,
687 	    struct ieee80211_radiotap_header *rh, int rlen,
688 		uint32_t rx_radiotap);
689 void	ieee80211_radiotap_detach(struct ieee80211com *);
690 void	ieee80211_radiotap_vattach(struct ieee80211vap *);
691 void	ieee80211_radiotap_vdetach(struct ieee80211vap *);
692 void	ieee80211_radiotap_chan_change(struct ieee80211com *);
693 void	ieee80211_radiotap_tx(struct ieee80211vap *, struct mbuf *);
694 void	ieee80211_radiotap_rx(struct ieee80211vap *, struct mbuf *);
695 void	ieee80211_radiotap_rx_all(struct ieee80211com *, struct mbuf *);
696 
697 static __inline int
698 ieee80211_radiotap_active(const struct ieee80211com *ic)
699 {
700 	return (ic->ic_flags_ext & IEEE80211_FEXT_BPF) != 0;
701 }
702 
703 static __inline int
704 ieee80211_radiotap_active_vap(const struct ieee80211vap *vap)
705 {
706 	return (vap->iv_flags_ext & IEEE80211_FEXT_BPF) ||
707 	    vap->iv_ic->ic_montaps != 0;
708 }
709 
710 /*
711  * Enqueue a task on the state thread.
712  */
713 static __inline void
714 ieee80211_runtask(struct ieee80211com *ic, struct task *task)
715 {
716 	taskqueue_enqueue(ic->ic_tq, task);
717 }
718 
719 /*
720  * Wait for a queued task to complete.
721  */
722 static __inline void
723 ieee80211_draintask(struct ieee80211com *ic, struct task *task)
724 {
725 	taskqueue_drain(ic->ic_tq, task);
726 }
727 
728 /*
729  * Key update synchronization methods.  XXX should not be visible.
730  */
731 static __inline void
732 ieee80211_key_update_begin(struct ieee80211vap *vap)
733 {
734 	vap->iv_key_update_begin(vap);
735 }
736 static __inline void
737 ieee80211_key_update_end(struct ieee80211vap *vap)
738 {
739 	vap->iv_key_update_end(vap);
740 }
741 
742 /*
743  * XXX these need to be here for IEEE80211_F_DATAPAD
744  */
745 
746 /*
747  * Return the space occupied by the 802.11 header and any
748  * padding required by the driver.  This works for a
749  * management or data frame.
750  */
751 static __inline int
752 ieee80211_hdrspace(struct ieee80211com *ic, const void *data)
753 {
754 	int size = ieee80211_hdrsize(data);
755 	if (ic->ic_flags & IEEE80211_F_DATAPAD)
756 		size = roundup(size, sizeof(uint32_t));
757 	return size;
758 }
759 
760 /*
761  * Like ieee80211_hdrspace, but handles any type of frame.
762  */
763 static __inline int
764 ieee80211_anyhdrspace(struct ieee80211com *ic, const void *data)
765 {
766 	int size = ieee80211_anyhdrsize(data);
767 	if (ic->ic_flags & IEEE80211_F_DATAPAD)
768 		size = roundup(size, sizeof(uint32_t));
769 	return size;
770 }
771 
772 /*
773  * Notify a vap that beacon state has been updated.
774  */
775 static __inline void
776 ieee80211_beacon_notify(struct ieee80211vap *vap, int what)
777 {
778 	if (vap->iv_state == IEEE80211_S_RUN)
779 		vap->iv_update_beacon(vap, what);
780 }
781 
782 /*
783  * Calculate HT channel promotion flags for a channel.
784  * XXX belongs in ieee80211_ht.h but needs IEEE80211_FHT_*
785  */
786 static __inline int
787 ieee80211_htchanflags(const struct ieee80211_channel *c)
788 {
789 	return IEEE80211_IS_CHAN_HT40(c) ?
790 	    IEEE80211_FHT_HT | IEEE80211_FHT_USEHT40 :
791 	    IEEE80211_IS_CHAN_HT(c) ?  IEEE80211_FHT_HT : 0;
792 }
793 
794 /*
795  * Fetch the current TX power (cap) for the given node.
796  *
797  * This includes the node and ic/vap TX power limit as needed,
798  * but it doesn't take into account any per-rate limit.
799  */
800 static __inline uint16_t
801 ieee80211_get_node_txpower(struct ieee80211_node *ni)
802 {
803 	struct ieee80211com *ic = ni->ni_ic;
804 	uint16_t txpower;
805 
806 	txpower = ni->ni_txpower;
807 	txpower = MIN(txpower, ic->ic_txpowlimit);
808 	if (ic->ic_curchan != NULL) {
809 		txpower = MIN(txpower, 2 * ic->ic_curchan->ic_maxregpower);
810 		txpower = MIN(txpower, ic->ic_curchan->ic_maxpower);
811 	}
812 
813 	return (txpower);
814 }
815 
816 /*
817  * Debugging facilities compiled in when IEEE80211_DEBUG is defined.
818  *
819  * The intent is that any problem in the net80211 layer can be
820  * diagnosed by inspecting the statistics (dumped by the wlanstats
821  * program) and/or the msgs generated by net80211.  Messages are
822  * broken into functional classes and can be controlled with the
823  * wlandebug program.  Certain of these msg groups are for facilities
824  * that are no longer part of net80211 (e.g. IEEE80211_MSG_DOT1XSM).
825  */
826 #define	IEEE80211_MSG_11N	0x80000000	/* 11n mode debug */
827 #define	IEEE80211_MSG_DEBUG	0x40000000	/* IFF_DEBUG equivalent */
828 #define	IEEE80211_MSG_DUMPPKTS	0x20000000	/* IFF_LINK2 equivalant */
829 #define	IEEE80211_MSG_CRYPTO	0x10000000	/* crypto work */
830 #define	IEEE80211_MSG_INPUT	0x08000000	/* input handling */
831 #define	IEEE80211_MSG_XRATE	0x04000000	/* rate set handling */
832 #define	IEEE80211_MSG_ELEMID	0x02000000	/* element id parsing */
833 #define	IEEE80211_MSG_NODE	0x01000000	/* node handling */
834 #define	IEEE80211_MSG_ASSOC	0x00800000	/* association handling */
835 #define	IEEE80211_MSG_AUTH	0x00400000	/* authentication handling */
836 #define	IEEE80211_MSG_SCAN	0x00200000	/* scanning */
837 #define	IEEE80211_MSG_OUTPUT	0x00100000	/* output handling */
838 #define	IEEE80211_MSG_STATE	0x00080000	/* state machine */
839 #define	IEEE80211_MSG_POWER	0x00040000	/* power save handling */
840 #define	IEEE80211_MSG_HWMP	0x00020000	/* hybrid mesh protocol */
841 #define	IEEE80211_MSG_DOT1XSM	0x00010000	/* 802.1x state machine */
842 #define	IEEE80211_MSG_RADIUS	0x00008000	/* 802.1x radius client */
843 #define	IEEE80211_MSG_RADDUMP	0x00004000	/* dump 802.1x radius packets */
844 #define	IEEE80211_MSG_MESH	0x00002000	/* mesh networking */
845 #define	IEEE80211_MSG_WPA	0x00001000	/* WPA/RSN protocol */
846 #define	IEEE80211_MSG_ACL	0x00000800	/* ACL handling */
847 #define	IEEE80211_MSG_WME	0x00000400	/* WME protocol */
848 #define	IEEE80211_MSG_SUPERG	0x00000200	/* Atheros SuperG protocol */
849 #define	IEEE80211_MSG_DOTH	0x00000100	/* 802.11h support */
850 #define	IEEE80211_MSG_INACT	0x00000080	/* inactivity handling */
851 #define	IEEE80211_MSG_ROAM	0x00000040	/* sta-mode roaming */
852 #define	IEEE80211_MSG_RATECTL	0x00000020	/* tx rate control */
853 #define	IEEE80211_MSG_ACTION	0x00000010	/* action frame handling */
854 #define	IEEE80211_MSG_WDS	0x00000008	/* WDS handling */
855 #define	IEEE80211_MSG_IOCTL	0x00000004	/* ioctl handling */
856 #define	IEEE80211_MSG_TDMA	0x00000002	/* TDMA handling */
857 
858 #define	IEEE80211_MSG_ANY	0xffffffff	/* anything */
859 
860 #define	IEEE80211_MSG_BITS \
861 	"\20\2TDMA\3IOCTL\4WDS\5ACTION\6RATECTL\7ROAM\10INACT\11DOTH\12SUPERG" \
862 	"\13WME\14ACL\15WPA\16RADKEYS\17RADDUMP\20RADIUS\21DOT1XSM\22HWMP" \
863 	"\23POWER\24STATE\25OUTPUT\26SCAN\27AUTH\30ASSOC\31NODE\32ELEMID" \
864 	"\33XRATE\34INPUT\35CRYPTO\36DUPMPKTS\37DEBUG\04011N"
865 
866 void	ieee80211_note(const struct ieee80211vap *, const char *, ...)
867 		__printflike(2, 3);
868 void	ieee80211_note_mac(const struct ieee80211vap *,
869 		const uint8_t mac[IEEE80211_ADDR_LEN], const char *, ...)
870 		__printflike(3, 4);
871 void	ieee80211_note_frame(const struct ieee80211vap *,
872 		const struct ieee80211_frame *, const char *, ...)
873 		__printflike(3, 4);
874 void ieee80211_discard_frame(const struct ieee80211vap *,
875 	const struct ieee80211_frame *, const char *type, const char *fmt, ...)
876 	__printflike(4, 5);
877 void ieee80211_discard_ie(const struct ieee80211vap *,
878 	const struct ieee80211_frame *, const char *type, const char *fmt, ...)
879 	__printflike(4, 5);
880 void ieee80211_discard_mac(const struct ieee80211vap *,
881 	const uint8_t mac[IEEE80211_ADDR_LEN], const char *type,
882 	const char *fmt, ...) __printflike(4, 5);
883 
884 #ifdef IEEE80211_DEBUG
885 #define	ieee80211_msg(_vap, _m)	((_vap)->iv_debug & (_m))
886 #define	IEEE80211_DPRINTF(_vap, _m, _fmt, ...) do {			\
887 	if (ieee80211_msg(_vap, _m))					\
888 		ieee80211_note(_vap, _fmt, __VA_ARGS__);		\
889 } while (0)
890 #define	IEEE80211_NOTE(_vap, _m, _ni, _fmt, ...) do {			\
891 	if (ieee80211_msg(_vap, _m))					\
892 		ieee80211_note_mac(_vap, (_ni)->ni_macaddr, _fmt, __VA_ARGS__);\
893 } while (0)
894 #define	IEEE80211_NOTE_MAC(_vap, _m, _mac, _fmt, ...) do {		\
895 	if (ieee80211_msg(_vap, _m))					\
896 		ieee80211_note_mac(_vap, _mac, _fmt, __VA_ARGS__);	\
897 } while (0)
898 #define	IEEE80211_NOTE_FRAME(_vap, _m, _wh, _fmt, ...) do {		\
899 	if (ieee80211_msg(_vap, _m))					\
900 		ieee80211_note_frame(_vap, _wh, _fmt, __VA_ARGS__);	\
901 } while (0)
902 #define	ieee80211_msg_debug(_vap) \
903 	((_vap)->iv_debug & IEEE80211_MSG_DEBUG)
904 #define	ieee80211_msg_dumppkts(_vap) \
905 	((_vap)->iv_debug & IEEE80211_MSG_DUMPPKTS)
906 #define	ieee80211_msg_input(_vap) \
907 	((_vap)->iv_debug & IEEE80211_MSG_INPUT)
908 #define	ieee80211_msg_radius(_vap) \
909 	((_vap)->iv_debug & IEEE80211_MSG_RADIUS)
910 #define	ieee80211_msg_dumpradius(_vap) \
911 	((_vap)->iv_debug & IEEE80211_MSG_RADDUMP)
912 #define	ieee80211_msg_dumpradkeys(_vap) \
913 	((_vap)->iv_debug & IEEE80211_MSG_RADKEYS)
914 #define	ieee80211_msg_scan(_vap) \
915 	((_vap)->iv_debug & IEEE80211_MSG_SCAN)
916 #define	ieee80211_msg_assoc(_vap) \
917 	((_vap)->iv_debug & IEEE80211_MSG_ASSOC)
918 
919 /*
920  * Emit a debug message about discarding a frame or information
921  * element.  One format is for extracting the mac address from
922  * the frame header; the other is for when a header is not
923  * available or otherwise appropriate.
924  */
925 #define	IEEE80211_DISCARD(_vap, _m, _wh, _type, _fmt, ...) do {		\
926 	if ((_vap)->iv_debug & (_m))					\
927 		ieee80211_discard_frame(_vap, _wh, _type, _fmt, __VA_ARGS__);\
928 } while (0)
929 #define	IEEE80211_DISCARD_IE(_vap, _m, _wh, _type, _fmt, ...) do {	\
930 	if ((_vap)->iv_debug & (_m))					\
931 		ieee80211_discard_ie(_vap, _wh, _type, _fmt, __VA_ARGS__);\
932 } while (0)
933 #define	IEEE80211_DISCARD_MAC(_vap, _m, _mac, _type, _fmt, ...) do {	\
934 	if ((_vap)->iv_debug & (_m))					\
935 		ieee80211_discard_mac(_vap, _mac, _type, _fmt, __VA_ARGS__);\
936 } while (0)
937 
938 #else
939 #define	IEEE80211_DPRINTF(_vap, _m, _fmt, ...)
940 #define	IEEE80211_NOTE(_vap, _m, _ni, _fmt, ...)
941 #define	IEEE80211_NOTE_FRAME(_vap, _m, _wh, _fmt, ...)
942 #define	IEEE80211_NOTE_MAC(_vap, _m, _mac, _fmt, ...)
943 #define	ieee80211_msg_dumppkts(_vap)	0
944 #define	ieee80211_msg(_vap, _m)		0
945 
946 #define	IEEE80211_DISCARD(_vap, _m, _wh, _type, _fmt, ...)
947 #define	IEEE80211_DISCARD_IE(_vap, _m, _wh, _type, _fmt, ...)
948 #define	IEEE80211_DISCARD_MAC(_vap, _m, _mac, _type, _fmt, ...)
949 #endif
950 
951 #endif /* _NET80211_IEEE80211_VAR_H_ */
952