1 /*-
2  * Copyright (c) 2001 Atsushi Onoe
3  * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 #ifndef _NET80211_IEEE80211_VAR_H_
29 #define _NET80211_IEEE80211_VAR_H_
30 
31 /*
32  * Definitions for IEEE 802.11 drivers.
33  */
34 /* NB: portability glue must go first */
35 #if defined(__NetBSD__)
36 #include <netproto/802_11/ieee80211_netbsd.h>
37 #elif defined(__FreeBSD__)
38 #include <netproto/802_11/ieee80211_freebsd.h>
39 #elif defined(__DragonFly__)
40 #include <netproto/802_11/ieee80211_dragonfly.h>
41 #elif defined(__linux__)
42 #include <netproto/802_11/ieee80211_linux.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 	void			*ic_softc;	/* driver softc */
123 	const char		*ic_name;	/* usually device name */
124 	ieee80211_com_lock_t	ic_comlock;	/* state update lock */
125 	ieee80211_tx_lock_t	ic_txlock;	/* ic/vap TX lock */
126 	TAILQ_HEAD(, ieee80211vap) ic_vaps;	/* list of vap instances */
127 	int			ic_headroom;	/* driver tx headroom needs */
128 	enum ieee80211_phytype	ic_phytype;	/* XXX wrong for multi-mode */
129 	enum ieee80211_opmode	ic_opmode;	/* operation mode */
130 	struct ifmedia		ic_media;	/* interface media config */
131 	struct callout		ic_inact;	/* inactivity processing */
132 	struct taskqueue	*ic_tq;		/* deferred state thread */
133 	struct task		ic_parent_task;	/* deferred parent processing */
134 	struct task		ic_promisc_task;/* deferred promisc update */
135 	struct task		ic_mcast_task;	/* deferred mcast update */
136 	struct task		ic_chan_task;	/* deferred channel change */
137 	struct task		ic_bmiss_task;	/* deferred beacon miss hndlr */
138 	struct task		ic_chw_task;	/* deferred HT CHW update */
139 
140 	uint32_t		ic_flags;	/* state flags */
141 	uint32_t		ic_flags_ext;	/* extended state flags */
142 	uint32_t		ic_flags_ht;	/* HT state flags */
143 	uint32_t		ic_flags_ven;	/* vendor state flags */
144 	uint32_t		ic_caps;	/* capabilities */
145 	uint32_t		ic_htcaps;	/* HT capabilities */
146 	uint32_t		ic_htextcaps;	/* HT extended capabilities */
147 	uint32_t		ic_cryptocaps;	/* crypto capabilities */
148 	uint8_t			ic_modecaps[2];	/* set of mode capabilities */
149 	uint8_t			ic_promisc;	/* vap's needing promisc mode */
150 	uint8_t			ic_allmulti;	/* vap's needing all multicast*/
151 	uint8_t			ic_nrunning;	/* vap's marked running */
152 	uint8_t			ic_curmode;	/* current mode */
153 	uint16_t		ic_bintval;	/* beacon interval */
154 	uint16_t		ic_lintval;	/* listen interval */
155 	uint16_t		ic_holdover;	/* PM hold over duration */
156 	uint16_t		ic_txpowlimit;	/* global tx power limit */
157 	struct ieee80211_rateset ic_sup_rates[IEEE80211_MODE_MAX];
158 
159 	/*
160 	 * Channel state:
161 	 *
162 	 * ic_channels is the set of available channels for the device;
163 	 *    it is setup by the driver
164 	 * ic_nchans is the number of valid entries in ic_channels
165 	 * ic_chan_avail is a bit vector of these channels used to check
166 	 *    whether a channel is available w/o searching the channel table.
167 	 * ic_chan_active is a (potentially) constrained subset of
168 	 *    ic_chan_avail that reflects any mode setting or user-specified
169 	 *    limit on the set of channels to use/scan
170 	 * ic_curchan is the current channel the device is set to; it may
171 	 *    be different from ic_bsschan when we are off-channel scanning
172 	 *    or otherwise doing background work
173 	 * ic_bsschan is the channel selected for operation; it may
174 	 *    be undefined (IEEE80211_CHAN_ANYC)
175 	 * ic_prevchan is a cached ``previous channel'' used to optimize
176 	 *    lookups when switching back+forth between two channels
177 	 *    (e.g. for dynamic turbo)
178 	 */
179 	int			ic_nchans;	/* # entries in ic_channels */
180 	struct ieee80211_channel ic_channels[IEEE80211_CHAN_MAX];
181 	uint8_t			ic_chan_avail[IEEE80211_CHAN_BYTES];
182 	uint8_t			ic_chan_active[IEEE80211_CHAN_BYTES];
183 	uint8_t			ic_chan_scan[IEEE80211_CHAN_BYTES];
184 	struct ieee80211_channel *ic_curchan;	/* current channel */
185 	const struct ieee80211_rate_table *ic_rt; /* table for ic_curchan */
186 	struct ieee80211_channel *ic_bsschan;	/* bss channel */
187 	struct ieee80211_channel *ic_prevchan;	/* previous channel */
188 	struct ieee80211_regdomain ic_regdomain;/* regulatory data */
189 	struct ieee80211_appie	*ic_countryie;	/* calculated country ie */
190 	struct ieee80211_channel *ic_countryie_chan;
191 
192 	/* 802.11h/DFS state */
193 	struct ieee80211_channel *ic_csa_newchan;/* channel for doing CSA */
194 	short			ic_csa_mode;	/* mode for doing CSA */
195 	short			ic_csa_count;	/* count for doing CSA */
196 	struct ieee80211_dfs_state ic_dfs;	/* DFS state */
197 
198 	struct ieee80211_scan_state *ic_scan;	/* scan state */
199 	struct ieee80211_scan_methods *ic_scan_methods; /* scan methods */
200 	int			ic_lastdata;	/* time of last data frame */
201 	int			ic_lastscan;	/* time last scan completed */
202 
203 	/* NB: this is the union of all vap stations/neighbors */
204 	int			ic_max_keyix;	/* max h/w key index */
205 	struct ieee80211_node_table ic_sta;	/* stations/neighbors */
206 	struct ieee80211_ageq	ic_stageq;	/* frame staging queue */
207 	uint32_t		ic_hash_key;	/* random key for mac hash */
208 
209 	/* XXX multi-bss: split out common/vap parts */
210 	struct ieee80211_wme_state ic_wme;	/* WME/WMM state */
211 
212 	/* XXX multi-bss: can per-vap be done/make sense? */
213 	enum ieee80211_protmode	ic_protmode;	/* 802.11g protection mode */
214 	uint16_t		ic_nonerpsta;	/* # non-ERP stations */
215 	uint16_t		ic_longslotsta;	/* # long slot time stations */
216 	uint16_t		ic_sta_assoc;	/* stations associated */
217 	uint16_t		ic_ht_sta_assoc;/* HT stations associated */
218 	uint16_t		ic_ht40_sta_assoc;/* HT40 stations associated */
219 	uint8_t			ic_curhtprotmode;/* HTINFO bss state */
220 	enum ieee80211_protmode	ic_htprotmode;	/* HT protection mode */
221 	int			ic_lastnonerp;	/* last time non-ERP sta noted*/
222 	int			ic_lastnonht;	/* last time non-HT sta noted */
223 	uint8_t			ic_rxstream;    /* # RX streams */
224 	uint8_t			ic_txstream;    /* # TX streams */
225 
226 	/* optional state for Atheros SuperG protocol extensions */
227 	struct ieee80211_superg	*ic_superg;
228 
229 	/* radiotap handling */
230 	struct ieee80211_radiotap_header *ic_th;/* tx radiotap headers */
231 	void			*ic_txchan;	/* channel state in ic_th */
232 	struct ieee80211_radiotap_header *ic_rh;/* rx radiotap headers */
233 	void			*ic_rxchan;	/* channel state in ic_rh */
234 	int			ic_montaps;	/* active monitor mode taps */
235 
236 	/* virtual ap create/delete */
237 	struct ieee80211vap*	(*ic_vap_create)(struct ieee80211com *,
238 				    const char [IFNAMSIZ], int,
239 				    enum ieee80211_opmode, int,
240 				    const uint8_t [IEEE80211_ADDR_LEN],
241 				    const uint8_t [IEEE80211_ADDR_LEN]);
242 	void			(*ic_vap_delete)(struct ieee80211vap *);
243 	/* operating mode attachment */
244 	ieee80211vap_attach	ic_vattach[IEEE80211_OPMODE_MAX];
245 	/* return hardware/radio capabilities */
246 	void			(*ic_getradiocaps)(struct ieee80211com *,
247 				    int, int *, struct ieee80211_channel []);
248 	/* check and/or prepare regdomain state change */
249 	int			(*ic_setregdomain)(struct ieee80211com *,
250 				    struct ieee80211_regdomain *,
251 				    int, struct ieee80211_channel []);
252 
253 	int			(*ic_set_quiet)(struct ieee80211_node *,
254 				    u_int8_t *quiet_elm);
255 
256 	/* send/recv 802.11 management frame */
257 	int			(*ic_send_mgmt)(struct ieee80211_node *,
258 				     int, int);
259 	/* send raw 802.11 frame */
260 	int			(*ic_raw_xmit)(struct ieee80211_node *,
261 				    struct mbuf *,
262 				    const struct ieee80211_bpf_params *);
263 	/* update device state for 802.11 slot time change */
264 	void			(*ic_updateslot)(struct ieee80211com *);
265 	/* handle multicast state changes */
266 	void			(*ic_update_mcast)(struct ieee80211com *);
267 	/* handle promiscuous mode changes */
268 	void			(*ic_update_promisc)(struct ieee80211com *);
269 	/* new station association callback/notification */
270 	void			(*ic_newassoc)(struct ieee80211_node *, int);
271 	/* TDMA update notification */
272 	void			(*ic_tdma_update)(struct ieee80211_node *,
273 				    const struct ieee80211_tdma_param *, int);
274 	/* node state management */
275 	struct ieee80211_node*	(*ic_node_alloc)(struct ieee80211vap *,
276 				    const uint8_t [IEEE80211_ADDR_LEN]);
277 	void			(*ic_node_free)(struct ieee80211_node *);
278 	void			(*ic_node_cleanup)(struct ieee80211_node *);
279 	void			(*ic_node_age)(struct ieee80211_node *);
280 	void			(*ic_node_drain)(struct ieee80211_node *);
281 	int8_t			(*ic_node_getrssi)(const struct ieee80211_node*);
282 	void			(*ic_node_getsignal)(const struct ieee80211_node*,
283 				    int8_t *, int8_t *);
284 	void			(*ic_node_getmimoinfo)(
285 				    const struct ieee80211_node*,
286 				    struct ieee80211_mimo_info *);
287 	/* scanning support */
288 	void			(*ic_scan_start)(struct ieee80211com *);
289 	void			(*ic_scan_end)(struct ieee80211com *);
290 	void			(*ic_set_channel)(struct ieee80211com *);
291 	void			(*ic_scan_curchan)(struct ieee80211_scan_state *,
292 				    unsigned long);
293 	void			(*ic_scan_mindwell)(struct ieee80211_scan_state *);
294 
295 	/*
296 	 * 802.11n ADDBA support.  A simple/generic implementation
297 	 * of A-MPDU tx aggregation is provided; the driver may
298 	 * override these methods to provide their own support.
299 	 * A-MPDU rx re-ordering happens automatically if the
300 	 * driver passes out-of-order frames to ieee80211_input
301 	 * from an assocated HT station.
302 	 */
303 	int			(*ic_recv_action)(struct ieee80211_node *,
304 				    const struct ieee80211_frame *,
305 				    const uint8_t *frm, const uint8_t *efrm);
306 	int			(*ic_send_action)(struct ieee80211_node *,
307 				    int category, int action, void *);
308 	/* check if A-MPDU should be enabled this station+ac */
309 	int			(*ic_ampdu_enable)(struct ieee80211_node *,
310 				    struct ieee80211_tx_ampdu *);
311 	/* start/stop doing A-MPDU tx aggregation for a station */
312 	int			(*ic_addba_request)(struct ieee80211_node *,
313 				    struct ieee80211_tx_ampdu *,
314 				    int dialogtoken, int baparamset,
315 				    int batimeout);
316 	int			(*ic_addba_response)(struct ieee80211_node *,
317 				    struct ieee80211_tx_ampdu *,
318 				    int status, int baparamset, int batimeout);
319 	void			(*ic_addba_stop)(struct ieee80211_node *,
320 				    struct ieee80211_tx_ampdu *);
321 	void			(*ic_addba_response_timeout)(struct ieee80211_node *,
322 				    struct ieee80211_tx_ampdu *);
323 	/* BAR response received */
324 	void			(*ic_bar_response)(struct ieee80211_node *,
325 				    struct ieee80211_tx_ampdu *, int status);
326 	/* start/stop doing A-MPDU rx processing for a station */
327 	int			(*ic_ampdu_rx_start)(struct ieee80211_node *,
328 				    struct ieee80211_rx_ampdu *, int baparamset,
329 				    int batimeout, int baseqctl);
330 	void			(*ic_ampdu_rx_stop)(struct ieee80211_node *,
331 				    struct ieee80211_rx_ampdu *);
332 
333 	/* The channel width has changed (20<->2040) */
334 	void			(*ic_update_chw)(struct ieee80211com *);
335 
336 	uint64_t		ic_spare[7];
337 };
338 
339 struct ieee80211_aclator;
340 struct ieee80211_tdma_state;
341 struct ieee80211_mesh_state;
342 struct ieee80211_hwmp_state;
343 
344 struct ieee80211vap {
345 	struct ifmedia		iv_media;	/* interface media config */
346 	struct ifnet		*iv_ifp;	/* associated device */
347 	struct bpf_if		*iv_rawbpf;	/* packet filter structure */
348 	struct sysctl_ctx_list	*iv_sysctl;	/* dynamic sysctl context */
349 	struct sysctl_oid	*iv_oid;	/* net.wlan.X sysctl oid */
350 
351 	TAILQ_ENTRY(ieee80211vap) iv_next;	/* list of vap instances */
352 	struct ieee80211com	*iv_ic;		/* back ptr to common state */
353 	uint32_t		iv_debug;	/* debug msg flags */
354 	struct ieee80211_stats	iv_stats;	/* statistics */
355 
356 	uint8_t			iv_myaddr[IEEE80211_ADDR_LEN];
357 	uint32_t		iv_flags;	/* state flags */
358 	uint32_t		iv_flags_ext;	/* extended state flags */
359 	uint32_t		iv_flags_ht;	/* HT state flags */
360 	uint32_t		iv_flags_ven;	/* vendor state flags */
361 	uint32_t		iv_caps;	/* capabilities */
362 	uint32_t		iv_htcaps;	/* HT capabilities */
363 	uint32_t		iv_htextcaps;	/* HT extended capabilities */
364 	enum ieee80211_opmode	iv_opmode;	/* operation mode */
365 	enum ieee80211_state	iv_state;	/* state machine state */
366 	enum ieee80211_state	iv_nstate;	/* pending state */
367 	int			iv_nstate_arg;	/* pending state arg */
368 	struct task		iv_nstate_task;	/* deferred state processing */
369 	struct task		iv_swbmiss_task;/* deferred iv_bmiss call */
370 	struct callout		iv_mgtsend;	/* mgmt frame response timer */
371 						/* inactivity timer settings */
372 	int			iv_inact_init;	/* setting for new station */
373 	int			iv_inact_auth;	/* auth but not assoc setting */
374 	int			iv_inact_run;	/* authorized setting */
375 	int			iv_inact_probe;	/* inactive probe time */
376 
377 	int			iv_des_nssid;	/* # desired ssids */
378 	struct ieee80211_scan_ssid iv_des_ssid[1];/* desired ssid table */
379 	uint8_t			iv_des_bssid[IEEE80211_ADDR_LEN];
380 	struct ieee80211_channel *iv_des_chan;	/* desired channel */
381 	uint16_t		iv_des_mode;	/* desired mode */
382 	int			iv_nicknamelen;	/* XXX junk */
383 	uint8_t			iv_nickname[IEEE80211_NWID_LEN];
384 	u_int			iv_bgscanidle;	/* bg scan idle threshold */
385 	u_int			iv_bgscanintvl;	/* bg scan min interval */
386 	u_int			iv_scanvalid;	/* scan cache valid threshold */
387 	u_int			iv_scanreq_duration;
388 	u_int			iv_scanreq_mindwell;
389 	u_int			iv_scanreq_maxdwell;
390 	uint16_t		iv_scanreq_flags;/* held scan request params */
391 	uint8_t			iv_scanreq_nssid;
392 	struct ieee80211_scan_ssid iv_scanreq_ssid[IEEE80211_SCAN_MAX_SSID];
393 	/* sta-mode roaming state */
394 	enum ieee80211_roamingmode iv_roaming;	/* roaming mode */
395 	struct ieee80211_roamparam iv_roamparms[IEEE80211_MODE_MAX];
396 
397 	uint8_t			iv_bmissthreshold;
398 	uint8_t			iv_bmiss_count;	/* current beacon miss count */
399 	int			iv_bmiss_max;	/* max bmiss before scan */
400 	uint16_t		iv_swbmiss_count;/* beacons in last period */
401 	uint16_t		iv_swbmiss_period;/* s/w bmiss period */
402 	struct callout		iv_swbmiss;	/* s/w beacon miss timer */
403 
404 	int			iv_ampdu_rxmax;	/* A-MPDU rx limit (bytes) */
405 	int			iv_ampdu_density;/* A-MPDU density */
406 	int			iv_ampdu_limit;	/* A-MPDU tx limit (bytes) */
407 	int			iv_amsdu_limit;	/* A-MSDU tx limit (bytes) */
408 	u_int			iv_ampdu_mintraffic[WME_NUM_AC];
409 
410 	uint32_t		*iv_aid_bitmap;	/* association id map */
411 	uint16_t		iv_max_aid;
412 	uint16_t		iv_sta_assoc;	/* stations associated */
413 	uint16_t		iv_ps_sta;	/* stations in power save */
414 	uint16_t		iv_ps_pending;	/* ps sta's w/ pending frames */
415 	uint16_t		iv_txseq;	/* mcast xmit seq# space */
416 	uint16_t		iv_tim_len;	/* ic_tim_bitmap size (bytes) */
417 	uint8_t			*iv_tim_bitmap;	/* power-save stations w/ data*/
418 	uint8_t			iv_dtim_period;	/* DTIM period */
419 	uint8_t			iv_dtim_count;	/* DTIM count from last bcn */
420 						/* set/unset aid pwrsav state */
421 	uint8_t			iv_quiet;	/* Quiet Element */
422 	uint8_t			iv_quiet_count;	/* constant count for Quiet Element */
423 	uint8_t			iv_quiet_count_value;	/* variable count for Quiet Element */
424 	uint8_t			iv_quiet_period;	/* period for Quiet Element */
425 	uint16_t		iv_quiet_duration;	/* duration for Quiet Element */
426 	uint16_t		iv_quiet_offset;	/* offset for Quiet Element */
427 	int			iv_csa_count;	/* count for doing CSA */
428 
429 	struct ieee80211_node	*iv_bss;	/* information for this node */
430 	struct ieee80211_txparam iv_txparms[IEEE80211_MODE_MAX];
431 	uint16_t		iv_rtsthreshold;
432 	uint16_t		iv_fragthreshold;
433 	int			iv_inact_timer;	/* inactivity timer wait */
434 	/* application-specified IE's to attach to mgt frames */
435 	struct ieee80211_appie	*iv_appie_beacon;
436 	struct ieee80211_appie	*iv_appie_probereq;
437 	struct ieee80211_appie	*iv_appie_proberesp;
438 	struct ieee80211_appie	*iv_appie_assocreq;
439 	struct ieee80211_appie	*iv_appie_assocresp;
440 	struct ieee80211_appie	*iv_appie_wpa;
441 	uint8_t			*iv_wpa_ie;
442 	uint8_t			*iv_rsn_ie;
443 	uint16_t		iv_max_keyix;	/* max h/w key index */
444 	ieee80211_keyix		iv_def_txkey;	/* default/group tx key index */
445 	struct ieee80211_key	iv_nw_keys[IEEE80211_WEP_NKID];
446 	int			(*iv_key_alloc)(struct ieee80211vap *,
447 				    struct ieee80211_key *,
448 				    ieee80211_keyix *, ieee80211_keyix *);
449 	int			(*iv_key_delete)(struct ieee80211vap *,
450 				    const struct ieee80211_key *);
451 	int			(*iv_key_set)(struct ieee80211vap *,
452 				    const struct ieee80211_key *,
453 				    const uint8_t mac[IEEE80211_ADDR_LEN]);
454 	void			(*iv_key_update_begin)(struct ieee80211vap *);
455 	void			(*iv_key_update_end)(struct ieee80211vap *);
456 
457 	const struct ieee80211_authenticator *iv_auth; /* authenticator glue */
458 	void			*iv_ec;		/* private auth state */
459 
460 	const struct ieee80211_aclator *iv_acl;	/* acl glue */
461 	void			*iv_as;		/* private aclator state */
462 
463 	const struct ieee80211_ratectl *iv_rate;
464 	void			*iv_rs;		/* private ratectl state */
465 
466 	struct ieee80211_tdma_state *iv_tdma;	/* tdma state */
467 	struct ieee80211_mesh_state *iv_mesh;	/* MBSS state */
468 	struct ieee80211_hwmp_state *iv_hwmp;	/* HWMP state */
469 
470 	/* operate-mode detach hook */
471 	void			(*iv_opdetach)(struct ieee80211vap *);
472 	/* receive processing */
473 	int			(*iv_input)(struct ieee80211_node *,
474 				    struct mbuf *,
475 				    const struct ieee80211_rx_stats *,
476 				    int, int);
477 	void			(*iv_recv_mgmt)(struct ieee80211_node *,
478 				    struct mbuf *, int,
479 				    const struct ieee80211_rx_stats *,
480 				    int, int);
481 	void			(*iv_recv_ctl)(struct ieee80211_node *,
482 				    struct mbuf *, int);
483 	void			(*iv_deliver_data)(struct ieee80211vap *,
484 				    struct ieee80211_node *, struct mbuf *);
485 #if 0
486 	/* send processing */
487 	int			(*iv_send_mgmt)(struct ieee80211_node *,
488 				     int, int);
489 #endif
490 	/* beacon miss processing */
491 	void			(*iv_bmiss)(struct ieee80211vap *);
492 	/* reset device state after 802.11 parameter/state change */
493 	int			(*iv_reset)(struct ieee80211vap *, u_long);
494 	/* [schedule] beacon frame update */
495 	void			(*iv_update_beacon)(struct ieee80211vap *, int);
496 	/* power save handling */
497 	void			(*iv_update_ps)(struct ieee80211vap *, int);
498 	int			(*iv_set_tim)(struct ieee80211_node *, int);
499 	void			(*iv_node_ps)(struct ieee80211_node *, int);
500 	void			(*iv_sta_ps)(struct ieee80211vap *, int);
501 	void			(*iv_recv_pspoll)(struct ieee80211_node *,
502 				    struct mbuf *);
503 
504 	/* state machine processing */
505 	int			(*iv_newstate)(struct ieee80211vap *,
506 				    enum ieee80211_state, int);
507 	/* 802.3 output method for raw frame xmit */
508 #if defined(__DragonFly__)
509 	int			(*iv_output)(struct ifnet *, struct mbuf *,
510 				    struct sockaddr *, struct rtentry *);
511 #else
512 	int			(*iv_output)(struct ifnet *, struct mbuf *,
513 				    const struct sockaddr *, struct route *);
514 #endif
515 	uint64_t		iv_spare[6];
516 };
517 MALLOC_DECLARE(M_80211_VAP);
518 
519 #define	IEEE80211_ADDR_EQ(a1,a2)	(memcmp(a1,a2,IEEE80211_ADDR_LEN) == 0)
520 #define	IEEE80211_ADDR_COPY(dst,src)	memcpy(dst,src,IEEE80211_ADDR_LEN)
521 
522 /* ic_flags/iv_flags */
523 #define	IEEE80211_F_TURBOP	0x00000001	/* CONF: ATH Turbo enabled*/
524 #define	IEEE80211_F_COMP	0x00000002	/* CONF: ATH comp enabled */
525 #define	IEEE80211_F_FF		0x00000004	/* CONF: ATH FF enabled */
526 #define	IEEE80211_F_BURST	0x00000008	/* CONF: bursting enabled */
527 /* NB: this is intentionally setup to be IEEE80211_CAPINFO_PRIVACY */
528 #define	IEEE80211_F_PRIVACY	0x00000010	/* CONF: privacy enabled */
529 #define	IEEE80211_F_PUREG	0x00000020	/* CONF: 11g w/o 11b sta's */
530 #define	IEEE80211_F_SCAN	0x00000080	/* STATUS: scanning */
531 #define	IEEE80211_F_ASCAN	0x00000100	/* STATUS: active scan */
532 #define	IEEE80211_F_SIBSS	0x00000200	/* STATUS: start IBSS */
533 /* NB: this is intentionally setup to be IEEE80211_CAPINFO_SHORT_SLOTTIME */
534 #define	IEEE80211_F_SHSLOT	0x00000400	/* STATUS: use short slot time*/
535 #define	IEEE80211_F_PMGTON	0x00000800	/* CONF: Power mgmt enable */
536 #define	IEEE80211_F_DESBSSID	0x00001000	/* CONF: des_bssid is set */
537 #define	IEEE80211_F_WME		0x00002000	/* CONF: enable WME use */
538 #define	IEEE80211_F_BGSCAN	0x00004000	/* CONF: bg scan enabled (???)*/
539 #define	IEEE80211_F_SWRETRY	0x00008000	/* CONF: sw tx retry enabled */
540 #define IEEE80211_F_TXPOW_FIXED	0x00010000	/* TX Power: fixed rate */
541 #define	IEEE80211_F_IBSSON	0x00020000	/* CONF: IBSS creation enable */
542 #define	IEEE80211_F_SHPREAMBLE	0x00040000	/* STATUS: use short preamble */
543 #define	IEEE80211_F_DATAPAD	0x00080000	/* CONF: do alignment pad */
544 #define	IEEE80211_F_USEPROT	0x00100000	/* STATUS: protection enabled */
545 #define	IEEE80211_F_USEBARKER	0x00200000	/* STATUS: use barker preamble*/
546 #define	IEEE80211_F_CSAPENDING	0x00400000	/* STATUS: chan switch pending*/
547 #define	IEEE80211_F_WPA1	0x00800000	/* CONF: WPA enabled */
548 #define	IEEE80211_F_WPA2	0x01000000	/* CONF: WPA2 enabled */
549 #define	IEEE80211_F_WPA		0x01800000	/* CONF: WPA/WPA2 enabled */
550 #define	IEEE80211_F_DROPUNENC	0x02000000	/* CONF: drop unencrypted */
551 #define	IEEE80211_F_COUNTERM	0x04000000	/* CONF: TKIP countermeasures */
552 #define	IEEE80211_F_HIDESSID	0x08000000	/* CONF: hide SSID in beacon */
553 #define	IEEE80211_F_NOBRIDGE	0x10000000	/* CONF: dis. internal bridge */
554 #define	IEEE80211_F_PCF		0x20000000	/* CONF: PCF enabled */
555 #define	IEEE80211_F_DOTH	0x40000000	/* CONF: 11h enabled */
556 #define	IEEE80211_F_DWDS	0x80000000	/* CONF: Dynamic WDS enabled */
557 
558 #define	IEEE80211_F_BITS \
559 	"\20\1TURBOP\2COMP\3FF\4BURST\5PRIVACY\6PUREG\10SCAN\11ASCAN\12SIBSS" \
560 	"\13SHSLOT\14PMGTON\15DESBSSID\16WME\17BGSCAN\20SWRETRY\21TXPOW_FIXED" \
561 	"\22IBSSON\23SHPREAMBLE\24DATAPAD\25USEPROT\26USERBARKER\27CSAPENDING" \
562 	"\30WPA1\31WPA2\32DROPUNENC\33COUNTERM\34HIDESSID\35NOBRIDG\36PCF" \
563 	"\37DOTH\40DWDS"
564 
565 /* Atheros protocol-specific flags */
566 #define	IEEE80211_F_ATHEROS \
567 	(IEEE80211_F_FF | IEEE80211_F_COMP | IEEE80211_F_TURBOP)
568 /* Check if an Atheros capability was negotiated for use */
569 #define	IEEE80211_ATH_CAP(vap, ni, bit) \
570 	((vap)->iv_flags & (ni)->ni_ath_flags & (bit))
571 
572 /* ic_flags_ext/iv_flags_ext */
573 #define	IEEE80211_FEXT_INACT	 0x00000002	/* CONF: sta inact handling */
574 #define	IEEE80211_FEXT_SCANWAIT	 0x00000004	/* STATUS: awaiting scan */
575 /* 0x00000006 reserved */
576 #define	IEEE80211_FEXT_BGSCAN	 0x00000008	/* STATUS: complete bgscan */
577 #define	IEEE80211_FEXT_WPS	 0x00000010	/* CONF: WPS enabled */
578 #define	IEEE80211_FEXT_TSN 	 0x00000020	/* CONF: TSN enabled */
579 #define	IEEE80211_FEXT_SCANREQ	 0x00000040	/* STATUS: scan req params */
580 #define	IEEE80211_FEXT_RESUME	 0x00000080	/* STATUS: start on resume */
581 #define	IEEE80211_FEXT_4ADDR	 0x00000100	/* CONF: apply 4-addr encap */
582 #define	IEEE80211_FEXT_NONERP_PR 0x00000200	/* STATUS: non-ERP sta present*/
583 #define	IEEE80211_FEXT_SWBMISS	 0x00000400	/* CONF: do bmiss in s/w */
584 #define	IEEE80211_FEXT_DFS	 0x00000800	/* CONF: DFS enabled */
585 #define	IEEE80211_FEXT_DOTD	 0x00001000	/* CONF: 11d enabled */
586 #define	IEEE80211_FEXT_STATEWAIT 0x00002000	/* STATUS: awaiting state chg */
587 #define	IEEE80211_FEXT_REINIT	 0x00004000	/* STATUS: INIT state first */
588 #define	IEEE80211_FEXT_BPF	 0x00008000	/* STATUS: BPF tap present */
589 /* NB: immutable: should be set only when creating a vap */
590 #define	IEEE80211_FEXT_WDSLEGACY 0x00010000	/* CONF: legacy WDS operation */
591 #define	IEEE80211_FEXT_PROBECHAN 0x00020000	/* CONF: probe passive channel*/
592 #define	IEEE80211_FEXT_UNIQMAC	 0x00040000	/* CONF: user or computed mac */
593 
594 #define	IEEE80211_FEXT_BITS \
595 	"\20\2INACT\3SCANWAIT\4BGSCAN\5WPS\6TSN\7SCANREQ\10RESUME" \
596 	"\0114ADDR\12NONEPR_PR\13SWBMISS\14DFS\15DOTD\16STATEWAIT\17REINIT" \
597 	"\20BPF\21WDSLEGACY\22PROBECHAN\23UNIQMAC"
598 
599 /* ic_flags_ht/iv_flags_ht */
600 #define	IEEE80211_FHT_NONHT_PR	 0x00000001	/* STATUS: non-HT sta present */
601 #define	IEEE80211_FHT_GF  	 0x00040000	/* CONF: Greenfield enabled */
602 #define	IEEE80211_FHT_HT	 0x00080000	/* CONF: HT supported */
603 #define	IEEE80211_FHT_AMPDU_TX	 0x00100000	/* CONF: A-MPDU tx supported */
604 #define	IEEE80211_FHT_AMPDU_RX	 0x00200000	/* CONF: A-MPDU rx supported */
605 #define	IEEE80211_FHT_AMSDU_TX	 0x00400000	/* CONF: A-MSDU tx supported */
606 #define	IEEE80211_FHT_AMSDU_RX	 0x00800000	/* CONF: A-MSDU rx supported */
607 #define	IEEE80211_FHT_USEHT40	 0x01000000	/* CONF: 20/40 use enabled */
608 #define	IEEE80211_FHT_PUREN	 0x02000000	/* CONF: 11n w/o legacy sta's */
609 #define	IEEE80211_FHT_SHORTGI20	 0x04000000	/* CONF: short GI in HT20 */
610 #define	IEEE80211_FHT_SHORTGI40	 0x08000000	/* CONF: short GI in HT40 */
611 #define	IEEE80211_FHT_HTCOMPAT 	 0x10000000	/* CONF: HT vendor OUI's */
612 #define	IEEE80211_FHT_RIFS  	 0x20000000	/* CONF: RIFS enabled */
613 #define	IEEE80211_FHT_STBC_TX 	 0x40000000	/* CONF: STBC tx enabled */
614 #define	IEEE80211_FHT_STBC_RX 	 0x80000000	/* CONF: STBC rx enabled */
615 
616 #define	IEEE80211_FHT_BITS \
617 	"\20\1NONHT_PR" \
618 	"\23GF\24HT\25AMPDU_TX\26AMPDU_TX" \
619 	"\27AMSDU_TX\30AMSDU_RX\31USEHT40\32PUREN\33SHORTGI20\34SHORTGI40" \
620 	"\35HTCOMPAT\36RIFS\37STBC_TX\40STBC_RX"
621 
622 #define	IEEE80211_FVEN_BITS	"\20"
623 
624 /* ic_caps/iv_caps: device driver capabilities */
625 /* 0x2e available */
626 #define	IEEE80211_C_STA		0x00000001	/* CAPABILITY: STA available */
627 #define	IEEE80211_C_8023ENCAP	0x00000002	/* CAPABILITY: 802.3 encap */
628 #define	IEEE80211_C_FF		0x00000040	/* CAPABILITY: ATH FF avail */
629 #define	IEEE80211_C_TURBOP	0x00000080	/* CAPABILITY: ATH Turbo avail*/
630 #define	IEEE80211_C_IBSS	0x00000100	/* CAPABILITY: IBSS available */
631 #define	IEEE80211_C_PMGT	0x00000200	/* CAPABILITY: Power mgmt */
632 #define	IEEE80211_C_HOSTAP	0x00000400	/* CAPABILITY: HOSTAP avail */
633 #define	IEEE80211_C_AHDEMO	0x00000800	/* CAPABILITY: Old Adhoc Demo */
634 #define	IEEE80211_C_SWRETRY	0x00001000	/* CAPABILITY: sw tx retry */
635 #define	IEEE80211_C_TXPMGT	0x00002000	/* CAPABILITY: tx power mgmt */
636 #define	IEEE80211_C_SHSLOT	0x00004000	/* CAPABILITY: short slottime */
637 #define	IEEE80211_C_SHPREAMBLE	0x00008000	/* CAPABILITY: short preamble */
638 #define	IEEE80211_C_MONITOR	0x00010000	/* CAPABILITY: monitor mode */
639 #define	IEEE80211_C_DFS		0x00020000	/* CAPABILITY: DFS/radar avail*/
640 #define	IEEE80211_C_MBSS	0x00040000	/* CAPABILITY: MBSS available */
641 #define	IEEE80211_C_SWSLEEP	0x00080000	/* CAPABILITY: do sleep here */
642 /* 0x7c0000 available */
643 #define	IEEE80211_C_WPA1	0x00800000	/* CAPABILITY: WPA1 avail */
644 #define	IEEE80211_C_WPA2	0x01000000	/* CAPABILITY: WPA2 avail */
645 #define	IEEE80211_C_WPA		0x01800000	/* CAPABILITY: WPA1+WPA2 avail*/
646 #define	IEEE80211_C_BURST	0x02000000	/* CAPABILITY: frame bursting */
647 #define	IEEE80211_C_WME		0x04000000	/* CAPABILITY: WME avail */
648 #define	IEEE80211_C_WDS		0x08000000	/* CAPABILITY: 4-addr support */
649 /* 0x10000000 reserved */
650 #define	IEEE80211_C_BGSCAN	0x20000000	/* CAPABILITY: bg scanning */
651 #define	IEEE80211_C_TXFRAG	0x40000000	/* CAPABILITY: tx fragments */
652 #define	IEEE80211_C_TDMA	0x80000000	/* CAPABILITY: TDMA avail */
653 /* XXX protection/barker? */
654 
655 #define	IEEE80211_C_OPMODE \
656 	(IEEE80211_C_STA | IEEE80211_C_IBSS | IEEE80211_C_HOSTAP | \
657 	 IEEE80211_C_AHDEMO | IEEE80211_C_MONITOR | IEEE80211_C_WDS | \
658 	 IEEE80211_C_TDMA | IEEE80211_C_MBSS)
659 
660 #define	IEEE80211_C_BITS \
661 	"\20\1STA\002803ENCAP\7FF\10TURBOP\11IBSS\12PMGT" \
662 	"\13HOSTAP\14AHDEMO\15SWRETRY\16TXPMGT\17SHSLOT\20SHPREAMBLE" \
663 	"\21MONITOR\22DFS\23MBSS\30WPA1\31WPA2\32BURST\33WME\34WDS\36BGSCAN" \
664 	"\37TXFRAG\40TDMA"
665 
666 /*
667  * ic_htcaps/iv_htcaps: HT-specific device/driver capabilities
668  *
669  * NB: the low 16-bits are the 802.11 definitions, the upper
670  *     16-bits are used to define s/w/driver capabilities.
671  */
672 #define	IEEE80211_HTC_AMPDU	0x00010000	/* CAPABILITY: A-MPDU tx */
673 #define	IEEE80211_HTC_AMSDU	0x00020000	/* CAPABILITY: A-MSDU tx */
674 /* NB: HT40 is implied by IEEE80211_HTCAP_CHWIDTH40 */
675 #define	IEEE80211_HTC_HT	0x00040000	/* CAPABILITY: HT operation */
676 #define	IEEE80211_HTC_SMPS	0x00080000	/* CAPABILITY: MIMO power save*/
677 #define	IEEE80211_HTC_RIFS	0x00100000	/* CAPABILITY: RIFS support */
678 #define	IEEE80211_HTC_RXUNEQUAL	0x00200000	/* CAPABILITY: RX unequal MCS */
679 #define	IEEE80211_HTC_RXMCS32	0x00400000	/* CAPABILITY: MCS32 support */
680 #define	IEEE80211_HTC_TXUNEQUAL	0x00800000	/* CAPABILITY: TX unequal MCS */
681 #define	IEEE80211_HTC_TXMCS32	0x01000000	/* CAPABILITY: MCS32 suport */
682 
683 #define	IEEE80211_C_HTCAP_BITS \
684 	"\20\1LDPC\2CHWIDTH40\5GREENFIELD\6SHORTGI20\7SHORTGI40\10TXSTBC" \
685 	"\21AMPDU\22AMSDU\23HT\24SMPS\25RIFS"
686 
687 int	ic_printf(struct ieee80211com *, const char *, ...) __printflike(2, 3);
688 void	ieee80211_ifattach(struct ieee80211com *,
689 		const uint8_t macaddr[IEEE80211_ADDR_LEN]);
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 		const uint8_t macaddr[IEEE80211_ADDR_LEN]);
696 int	ieee80211_vap_attach(struct ieee80211vap *,
697 		ifm_change_cb_t, ifm_stat_cb_t);
698 void	ieee80211_vap_detach(struct ieee80211vap *);
699 const struct ieee80211_rateset *ieee80211_get_suprates(struct ieee80211com *ic,
700 		const struct ieee80211_channel *);
701 void	ieee80211_announce(struct ieee80211com *);
702 void	ieee80211_announce_channels(struct ieee80211com *);
703 void	ieee80211_drain(struct ieee80211com *);
704 void	ieee80211_media_init(struct ieee80211com *);
705 struct ieee80211com *ieee80211_find_vap(const uint8_t mac[IEEE80211_ADDR_LEN]);
706 int	ieee80211_media_change(struct ifnet *);
707 void	ieee80211_media_status(struct ifnet *, struct ifmediareq *);
708 #if defined(__DragonFly__)
709 int	ieee80211_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
710 #else
711 int	ieee80211_ioctl(struct ifnet *, u_long, caddr_t);
712 #endif
713 int	ieee80211_rate2media(struct ieee80211com *, int,
714 		enum ieee80211_phymode);
715 int	ieee80211_media2rate(int);
716 int	ieee80211_mhz2ieee(u_int, u_int);
717 int	ieee80211_chan2ieee(struct ieee80211com *,
718 		const struct ieee80211_channel *);
719 u_int	ieee80211_ieee2mhz(u_int, u_int);
720 struct ieee80211_channel *ieee80211_find_channel(struct ieee80211com *,
721 		int freq, int flags);
722 struct ieee80211_channel *ieee80211_find_channel_byieee(struct ieee80211com *,
723 		int ieee, int flags);
724 struct ieee80211_channel *ieee80211_lookup_channel_rxstatus(struct ieee80211vap *,
725 		const struct ieee80211_rx_stats *);
726 int	ieee80211_setmode(struct ieee80211com *, enum ieee80211_phymode);
727 enum ieee80211_phymode ieee80211_chan2mode(const struct ieee80211_channel *);
728 uint32_t ieee80211_mac_hash(const struct ieee80211com *,
729 		const uint8_t addr[IEEE80211_ADDR_LEN]);
730 char	ieee80211_channel_type_char(const struct ieee80211_channel *c);
731 
732 void	ieee80211_radiotap_attach(struct ieee80211com *,
733 	    struct ieee80211_radiotap_header *th, int tlen,
734 		uint32_t tx_radiotap,
735 	    struct ieee80211_radiotap_header *rh, int rlen,
736 		uint32_t rx_radiotap);
737 void	ieee80211_radiotap_attachv(struct ieee80211com *,
738 	    struct ieee80211_radiotap_header *th,
739 	    int tlen, int n_tx_v, uint32_t tx_radiotap,
740 	    struct ieee80211_radiotap_header *rh,
741 	    int rlen, int n_rx_v, uint32_t rx_radiotap);
742 void	ieee80211_radiotap_detach(struct ieee80211com *);
743 void	ieee80211_radiotap_vattach(struct ieee80211vap *);
744 void	ieee80211_radiotap_vdetach(struct ieee80211vap *);
745 void	ieee80211_radiotap_chan_change(struct ieee80211com *);
746 void	ieee80211_radiotap_tx(struct ieee80211vap *, struct mbuf *);
747 void	ieee80211_radiotap_rx(struct ieee80211vap *, struct mbuf *);
748 void	ieee80211_radiotap_rx_all(struct ieee80211com *, struct mbuf *);
749 
750 static __inline int
751 ieee80211_radiotap_active(const struct ieee80211com *ic)
752 {
753 	return (ic->ic_flags_ext & IEEE80211_FEXT_BPF) != 0;
754 }
755 
756 static __inline int
757 ieee80211_radiotap_active_vap(const struct ieee80211vap *vap)
758 {
759 	return (vap->iv_flags_ext & IEEE80211_FEXT_BPF) ||
760 	    vap->iv_ic->ic_montaps != 0;
761 }
762 
763 /*
764  * Enqueue a task on the state thread.
765  */
766 static __inline void
767 ieee80211_runtask(struct ieee80211com *ic, struct task *task)
768 {
769 	taskqueue_enqueue(ic->ic_tq, task);
770 }
771 
772 /*
773  * Wait for a queued task to complete.
774  */
775 static __inline void
776 ieee80211_draintask(struct ieee80211com *ic, struct task *task)
777 {
778 	taskqueue_drain(ic->ic_tq, task);
779 }
780 
781 /*
782  * Key update synchronization methods.  XXX should not be visible.
783  */
784 static __inline void
785 ieee80211_key_update_begin(struct ieee80211vap *vap)
786 {
787 	vap->iv_key_update_begin(vap);
788 }
789 static __inline void
790 ieee80211_key_update_end(struct ieee80211vap *vap)
791 {
792 	vap->iv_key_update_end(vap);
793 }
794 
795 /*
796  * XXX these need to be here for IEEE80211_F_DATAPAD
797  */
798 
799 /*
800  * Return the space occupied by the 802.11 header and any
801  * padding required by the driver.  This works for a
802  * management or data frame.
803  */
804 static __inline int
805 ieee80211_hdrspace(struct ieee80211com *ic, const void *data)
806 {
807 	int size = ieee80211_hdrsize(data);
808 	if (ic->ic_flags & IEEE80211_F_DATAPAD)
809 		size = roundup(size, sizeof(uint32_t));
810 	return size;
811 }
812 
813 /*
814  * Like ieee80211_hdrspace, but handles any type of frame.
815  */
816 static __inline int
817 ieee80211_anyhdrspace(struct ieee80211com *ic, const void *data)
818 {
819 	int size = ieee80211_anyhdrsize(data);
820 	if (ic->ic_flags & IEEE80211_F_DATAPAD)
821 		size = roundup(size, sizeof(uint32_t));
822 	return size;
823 }
824 
825 /*
826  * Notify a vap that beacon state has been updated.
827  */
828 static __inline void
829 ieee80211_beacon_notify(struct ieee80211vap *vap, int what)
830 {
831 	if (vap->iv_state == IEEE80211_S_RUN)
832 		vap->iv_update_beacon(vap, what);
833 }
834 
835 /*
836  * Calculate HT channel promotion flags for a channel.
837  * XXX belongs in ieee80211_ht.h but needs IEEE80211_FHT_*
838  */
839 static __inline int
840 ieee80211_htchanflags(const struct ieee80211_channel *c)
841 {
842 	return IEEE80211_IS_CHAN_HT40(c) ?
843 	    IEEE80211_FHT_HT | IEEE80211_FHT_USEHT40 :
844 	    IEEE80211_IS_CHAN_HT(c) ?  IEEE80211_FHT_HT : 0;
845 }
846 
847 /*
848  * Fetch the current TX power (cap) for the given node.
849  *
850  * This includes the node and ic/vap TX power limit as needed,
851  * but it doesn't take into account any per-rate limit.
852  */
853 static __inline uint16_t
854 ieee80211_get_node_txpower(struct ieee80211_node *ni)
855 {
856 	struct ieee80211com *ic = ni->ni_ic;
857 	uint16_t txpower;
858 
859 	txpower = ni->ni_txpower;
860 	txpower = MIN(txpower, ic->ic_txpowlimit);
861 	if (ic->ic_curchan != NULL) {
862 		txpower = MIN(txpower, 2 * ic->ic_curchan->ic_maxregpower);
863 		txpower = MIN(txpower, ic->ic_curchan->ic_maxpower);
864 	}
865 
866 	return (txpower);
867 }
868 
869 /*
870  * Debugging facilities compiled in when IEEE80211_DEBUG is defined.
871  *
872  * The intent is that any problem in the net80211 layer can be
873  * diagnosed by inspecting the statistics (dumped by the wlanstats
874  * program) and/or the msgs generated by net80211.  Messages are
875  * broken into functional classes and can be controlled with the
876  * wlandebug program.  Certain of these msg groups are for facilities
877  * that are no longer part of net80211 (e.g. IEEE80211_MSG_DOT1XSM).
878  */
879 #define	IEEE80211_MSG_11N	0x80000000	/* 11n mode debug */
880 #define	IEEE80211_MSG_DEBUG	0x40000000	/* IFF_DEBUG equivalent */
881 #define	IEEE80211_MSG_DUMPPKTS	0x20000000	/* IFF_LINK2 equivalant */
882 #define	IEEE80211_MSG_CRYPTO	0x10000000	/* crypto work */
883 #define	IEEE80211_MSG_INPUT	0x08000000	/* input handling */
884 #define	IEEE80211_MSG_XRATE	0x04000000	/* rate set handling */
885 #define	IEEE80211_MSG_ELEMID	0x02000000	/* element id parsing */
886 #define	IEEE80211_MSG_NODE	0x01000000	/* node handling */
887 #define	IEEE80211_MSG_ASSOC	0x00800000	/* association handling */
888 #define	IEEE80211_MSG_AUTH	0x00400000	/* authentication handling */
889 #define	IEEE80211_MSG_SCAN	0x00200000	/* scanning */
890 #define	IEEE80211_MSG_OUTPUT	0x00100000	/* output handling */
891 #define	IEEE80211_MSG_STATE	0x00080000	/* state machine */
892 #define	IEEE80211_MSG_POWER	0x00040000	/* power save handling */
893 #define	IEEE80211_MSG_HWMP	0x00020000	/* hybrid mesh protocol */
894 #define	IEEE80211_MSG_DOT1XSM	0x00010000	/* 802.1x state machine */
895 #define	IEEE80211_MSG_RADIUS	0x00008000	/* 802.1x radius client */
896 #define	IEEE80211_MSG_RADDUMP	0x00004000	/* dump 802.1x radius packets */
897 #define	IEEE80211_MSG_MESH	0x00002000	/* mesh networking */
898 #define	IEEE80211_MSG_WPA	0x00001000	/* WPA/RSN protocol */
899 #define	IEEE80211_MSG_ACL	0x00000800	/* ACL handling */
900 #define	IEEE80211_MSG_WME	0x00000400	/* WME protocol */
901 #define	IEEE80211_MSG_SUPERG	0x00000200	/* Atheros SuperG protocol */
902 #define	IEEE80211_MSG_DOTH	0x00000100	/* 802.11h support */
903 #define	IEEE80211_MSG_INACT	0x00000080	/* inactivity handling */
904 #define	IEEE80211_MSG_ROAM	0x00000040	/* sta-mode roaming */
905 #define	IEEE80211_MSG_RATECTL	0x00000020	/* tx rate control */
906 #define	IEEE80211_MSG_ACTION	0x00000010	/* action frame handling */
907 #define	IEEE80211_MSG_WDS	0x00000008	/* WDS handling */
908 #define	IEEE80211_MSG_IOCTL	0x00000004	/* ioctl handling */
909 #define	IEEE80211_MSG_TDMA	0x00000002	/* TDMA handling */
910 
911 #define	IEEE80211_MSG_ANY	0xffffffff	/* anything */
912 
913 #define	IEEE80211_MSG_BITS \
914 	"\20\2TDMA\3IOCTL\4WDS\5ACTION\6RATECTL\7ROAM\10INACT\11DOTH\12SUPERG" \
915 	"\13WME\14ACL\15WPA\16RADKEYS\17RADDUMP\20RADIUS\21DOT1XSM\22HWMP" \
916 	"\23POWER\24STATE\25OUTPUT\26SCAN\27AUTH\30ASSOC\31NODE\32ELEMID" \
917 	"\33XRATE\34INPUT\35CRYPTO\36DUPMPKTS\37DEBUG\04011N"
918 
919 #ifdef IEEE80211_DEBUG
920 #define	ieee80211_msg(_vap, _m)	((_vap)->iv_debug & (_m))
921 #define	IEEE80211_DPRINTF(_vap, _m, _fmt, ...) do {			\
922 	if (ieee80211_msg(_vap, _m))					\
923 		ieee80211_note(_vap, _fmt, __VA_ARGS__);		\
924 } while (0)
925 #define	IEEE80211_NOTE(_vap, _m, _ni, _fmt, ...) do {			\
926 	if (ieee80211_msg(_vap, _m))					\
927 		ieee80211_note_mac(_vap, (_ni)->ni_macaddr, _fmt, __VA_ARGS__);\
928 } while (0)
929 #define	IEEE80211_NOTE_MAC(_vap, _m, _mac, _fmt, ...) do {		\
930 	if (ieee80211_msg(_vap, _m))					\
931 		ieee80211_note_mac(_vap, _mac, _fmt, __VA_ARGS__);	\
932 } while (0)
933 #define	IEEE80211_NOTE_FRAME(_vap, _m, _wh, _fmt, ...) do {		\
934 	if (ieee80211_msg(_vap, _m))					\
935 		ieee80211_note_frame(_vap, _wh, _fmt, __VA_ARGS__);	\
936 } while (0)
937 void	ieee80211_note(const struct ieee80211vap *, const char *, ...)
938 		__printflike(2, 3);
939 void	ieee80211_note_mac(const struct ieee80211vap *,
940 		const uint8_t mac[IEEE80211_ADDR_LEN], const char *, ...)
941 		__printflike(3, 4);
942 void	ieee80211_note_frame(const struct ieee80211vap *,
943 		const struct ieee80211_frame *, const char *, ...)
944 		__printflike(3, 4);
945 #define	ieee80211_msg_debug(_vap) \
946 	((_vap)->iv_debug & IEEE80211_MSG_DEBUG)
947 #define	ieee80211_msg_dumppkts(_vap) \
948 	((_vap)->iv_debug & IEEE80211_MSG_DUMPPKTS)
949 #define	ieee80211_msg_input(_vap) \
950 	((_vap)->iv_debug & IEEE80211_MSG_INPUT)
951 #define	ieee80211_msg_radius(_vap) \
952 	((_vap)->iv_debug & IEEE80211_MSG_RADIUS)
953 #define	ieee80211_msg_dumpradius(_vap) \
954 	((_vap)->iv_debug & IEEE80211_MSG_RADDUMP)
955 #define	ieee80211_msg_dumpradkeys(_vap) \
956 	((_vap)->iv_debug & IEEE80211_MSG_RADKEYS)
957 #define	ieee80211_msg_scan(_vap) \
958 	((_vap)->iv_debug & IEEE80211_MSG_SCAN)
959 #define	ieee80211_msg_assoc(_vap) \
960 	((_vap)->iv_debug & IEEE80211_MSG_ASSOC)
961 
962 /*
963  * Emit a debug message about discarding a frame or information
964  * element.  One format is for extracting the mac address from
965  * the frame header; the other is for when a header is not
966  * available or otherwise appropriate.
967  */
968 #define	IEEE80211_DISCARD(_vap, _m, _wh, _type, _fmt, ...) do {		\
969 	if ((_vap)->iv_debug & (_m))					\
970 		ieee80211_discard_frame(_vap, _wh, _type, _fmt, __VA_ARGS__);\
971 } while (0)
972 #define	IEEE80211_DISCARD_IE(_vap, _m, _wh, _type, _fmt, ...) do {	\
973 	if ((_vap)->iv_debug & (_m))					\
974 		ieee80211_discard_ie(_vap, _wh, _type, _fmt, __VA_ARGS__);\
975 } while (0)
976 #define	IEEE80211_DISCARD_MAC(_vap, _m, _mac, _type, _fmt, ...) do {	\
977 	if ((_vap)->iv_debug & (_m))					\
978 		ieee80211_discard_mac(_vap, _mac, _type, _fmt, __VA_ARGS__);\
979 } while (0)
980 
981 void ieee80211_discard_frame(const struct ieee80211vap *,
982 	const struct ieee80211_frame *, const char *type, const char *fmt, ...)
983 	__printflike(4, 5);
984 void ieee80211_discard_ie(const struct ieee80211vap *,
985 	const struct ieee80211_frame *, const char *type, const char *fmt, ...)
986 	__printflike(4, 5);
987 void ieee80211_discard_mac(const struct ieee80211vap *,
988 	const uint8_t mac[IEEE80211_ADDR_LEN], const char *type,
989 	const char *fmt, ...)
990 	__printflike(4, 5);
991 #else
992 #define	IEEE80211_DPRINTF(_vap, _m, _fmt, ...)
993 #define	IEEE80211_NOTE(_vap, _m, _ni, _fmt, ...)
994 #define	IEEE80211_NOTE_FRAME(_vap, _m, _wh, _fmt, ...)
995 #define	IEEE80211_NOTE_MAC(_vap, _m, _mac, _fmt, ...)
996 #define	ieee80211_msg_dumppkts(_vap)	0
997 #define	ieee80211_msg(_vap, _m)		0
998 
999 #define	IEEE80211_DISCARD(_vap, _m, _wh, _type, _fmt, ...)
1000 #define	IEEE80211_DISCARD_IE(_vap, _m, _wh, _type, _fmt, ...)
1001 #define	IEEE80211_DISCARD_MAC(_vap, _m, _mac, _type, _fmt, ...)
1002 #endif
1003 
1004 #endif /* _NET80211_IEEE80211_VAR_H_ */
1005