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[dragonfly.git] / sys / netproto / 802_11 / ieee80211_proto.h
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32176cfd 1/*-
f186073c 2 * Copyright (c) 2001 Atsushi Onoe
32176cfd 3 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
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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.
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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 *
085ff963 26 * $FreeBSD$
f186073c 27 */
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28#ifndef _NET80211_IEEE80211_PROTO_H_
29#define _NET80211_IEEE80211_PROTO_H_
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30
31/*
32 * 802.11 protocol implementation definitions.
33 */
34
35enum ieee80211_state {
36 IEEE80211_S_INIT = 0, /* default state */
37 IEEE80211_S_SCAN = 1, /* scanning */
38 IEEE80211_S_AUTH = 2, /* try to authenticate */
39 IEEE80211_S_ASSOC = 3, /* try to assoc */
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40 IEEE80211_S_CAC = 4, /* doing channel availability check */
41 IEEE80211_S_RUN = 5, /* operational (e.g. associated) */
42 IEEE80211_S_CSA = 6, /* channel switch announce pending */
43 IEEE80211_S_SLEEP = 7, /* power save */
f186073c 44};
32176cfd 45#define IEEE80211_S_MAX (IEEE80211_S_SLEEP+1)
f186073c 46
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47#define IEEE80211_SEND_MGMT(_ni,_type,_arg) \
48 ((*(_ni)->ni_ic->ic_send_mgmt)(_ni, _type, _arg))
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49
50extern const char *ieee80211_mgt_subtype_name[];
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51extern const char *ieee80211_phymode_name[IEEE80211_MODE_MAX];
52extern const int ieee80211_opcap[IEEE80211_OPMODE_MAX];
f186073c 53
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54void ieee80211_proto_attach(struct ieee80211com *);
55void ieee80211_proto_detach(struct ieee80211com *);
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56void ieee80211_proto_vattach(struct ieee80211vap *);
57void ieee80211_proto_vdetach(struct ieee80211vap *);
58
59void ieee80211_syncifflag_locked(struct ieee80211com *, int flag);
60void ieee80211_syncflag(struct ieee80211vap *, int flag);
61void ieee80211_syncflag_ht(struct ieee80211vap *, int flag);
62void ieee80211_syncflag_ext(struct ieee80211vap *, int flag);
f186073c 63
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64#define IEEE80211_R_NF 0x0000001 /* global NF value valid */
65#define IEEE80211_R_RSSI 0x0000002 /* global RSSI value valid */
66#define IEEE80211_R_C_CHAIN 0x0000004 /* RX chain count valid */
67#define IEEE80211_R_C_NF 0x0000008 /* per-chain NF value valid */
68#define IEEE80211_R_C_RSSI 0x0000010 /* per-chain RSSI value valid */
69#define IEEE80211_R_C_EVM 0x0000020 /* per-chain EVM valid */
70#define IEEE80211_R_C_HT40 0x0000040 /* RX'ed packet is 40mhz, pilots 4,5 valid */
71
72struct ieee80211_rx_stats {
73 uint32_t r_flags; /* IEEE80211_R_* flags */
74 uint8_t c_chain; /* number of RX chains involved */
75 int16_t c_nf_ctl[IEEE80211_MAX_CHAINS]; /* per-chain NF */
76 int16_t c_nf_ext[IEEE80211_MAX_CHAINS]; /* per-chain NF */
77 int16_t c_rssi_ctl[IEEE80211_MAX_CHAINS]; /* per-chain RSSI */
78 int16_t c_rssi_ext[IEEE80211_MAX_CHAINS]; /* per-chain RSSI */
79 uint8_t nf; /* global NF */
80 uint8_t rssi; /* global RSSI */
81 uint8_t evm[IEEE80211_MAX_CHAINS][IEEE80211_MAX_EVM_PILOTS];
82 /* per-chain, per-pilot EVM values */
83};
84
85#if defined(__DragonFly__)
86struct route;
87#endif
88
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89#define ieee80211_input(ni, m, rssi, nf) \
90 ((ni)->ni_vap->iv_input(ni, m, rssi, nf))
91int ieee80211_input_all(struct ieee80211com *, struct mbuf *, int, int);
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92
93int ieee80211_input_mimo(struct ieee80211_node *, struct mbuf *,
94 struct ieee80211_rx_stats *);
95int ieee80211_input_mimo_all(struct ieee80211com *, struct mbuf *,
96 struct ieee80211_rx_stats *);
97
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98struct ieee80211_bpf_params;
99int ieee80211_mgmt_output(struct ieee80211_node *, struct mbuf *, int,
100 struct ieee80211_bpf_params *);
101int ieee80211_raw_xmit(struct ieee80211_node *, struct mbuf *,
102 const struct ieee80211_bpf_params *);
085ff963 103#if defined(__DragonFly__)
32176cfd 104int ieee80211_output(struct ifnet *, struct mbuf *,
34a60cf6 105 struct sockaddr *, struct rtentry *rt);
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106#elif __FreeBSD_version >= 1000031
107int ieee80211_output(struct ifnet *, struct mbuf *,
108 const struct sockaddr *, struct route *ro);
109#else
110int ieee80211_output(struct ifnet *, struct mbuf *,
111 struct sockaddr *, struct route *ro);
112#endif
113int ieee80211_vap_pkt_send_dest(struct ieee80211vap *, struct mbuf *,
114 struct ieee80211_node *);
115int ieee80211_raw_output(struct ieee80211vap *, struct ieee80211_node *,
116 struct mbuf *, const struct ieee80211_bpf_params *);
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117void ieee80211_send_setup(struct ieee80211_node *, struct mbuf *, int, int,
118 const uint8_t [IEEE80211_ADDR_LEN], const uint8_t [IEEE80211_ADDR_LEN],
119 const uint8_t [IEEE80211_ADDR_LEN]);
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120void ieee80211_vap_start(struct ifnet *ifp, struct ifaltq_subque *ifsq);
121int ieee80211_vap_transmit(struct ifnet *ifp, struct mbuf *m);
122void ieee80211_vap_qflush(struct ifnet *ifp);
841ab66c 123int ieee80211_send_nulldata(struct ieee80211_node *);
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124int ieee80211_classify(struct ieee80211_node *, struct mbuf *m);
125struct mbuf *ieee80211_mbuf_adjust(struct ieee80211vap *, int,
126 struct ieee80211_key *, struct mbuf *);
127struct mbuf *ieee80211_encap(struct ieee80211vap *, struct ieee80211_node *,
128 struct mbuf *);
129int ieee80211_send_mgmt(struct ieee80211_node *, int, int);
130struct ieee80211_appie;
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131int ieee80211_send_probereq(struct ieee80211_node *ni,
132 const uint8_t sa[IEEE80211_ADDR_LEN],
133 const uint8_t da[IEEE80211_ADDR_LEN],
134 const uint8_t bssid[IEEE80211_ADDR_LEN],
32176cfd 135 const uint8_t *ssid, size_t ssidlen);
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136struct mbuf * ieee80211_ff_encap1(struct ieee80211vap *, struct mbuf *,
137 const struct ether_header *);
138void ieee80211_tx_complete(struct ieee80211_node *,
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139 struct mbuf *, int);
140
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141/*
142 * The formation of ProbeResponse frames requires guidance to
143 * deal with legacy clients. When the client is identified as
144 * "legacy 11b" ieee80211_send_proberesp is passed this token.
145 */
146#define IEEE80211_SEND_LEGACY_11B 0x1 /* legacy 11b client */
147#define IEEE80211_SEND_LEGACY_11 0x2 /* other legacy client */
148#define IEEE80211_SEND_LEGACY 0x3 /* any legacy client */
149struct mbuf *ieee80211_alloc_proberesp(struct ieee80211_node *, int);
150int ieee80211_send_proberesp(struct ieee80211vap *,
151 const uint8_t da[IEEE80211_ADDR_LEN], int);
152struct mbuf *ieee80211_alloc_rts(struct ieee80211com *ic,
153 const uint8_t [IEEE80211_ADDR_LEN],
154 const uint8_t [IEEE80211_ADDR_LEN], uint16_t);
155struct mbuf *ieee80211_alloc_cts(struct ieee80211com *,
156 const uint8_t [IEEE80211_ADDR_LEN], uint16_t);
157
158uint8_t *ieee80211_add_rates(uint8_t *, const struct ieee80211_rateset *);
159uint8_t *ieee80211_add_xrates(uint8_t *, const struct ieee80211_rateset *);
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160uint8_t *ieee80211_add_wpa(uint8_t *, const struct ieee80211vap *);
161uint8_t *ieee80211_add_rsn(uint8_t *, const struct ieee80211vap *);
162uint8_t *ieee80211_add_qos(uint8_t *, const struct ieee80211_node *);
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163uint16_t ieee80211_getcapinfo(struct ieee80211vap *,
164 struct ieee80211_channel *);
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165
166void ieee80211_reset_erp(struct ieee80211com *);
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167void ieee80211_set_shortslottime(struct ieee80211com *, int onoff);
168int ieee80211_iserp_rateset(const struct ieee80211_rateset *);
169void ieee80211_setbasicrates(struct ieee80211_rateset *,
170 enum ieee80211_phymode);
171void ieee80211_addbasicrates(struct ieee80211_rateset *,
172 enum ieee80211_phymode);
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173
174/*
175 * Return the size of the 802.11 header for a management or data frame.
176 */
177static __inline int
178ieee80211_hdrsize(const void *data)
179{
180 const struct ieee80211_frame *wh = data;
181 int size = sizeof(struct ieee80211_frame);
182
183 /* NB: we don't handle control frames */
184 KASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL,
185 ("%s: control frame", __func__));
32176cfd 186 if (IEEE80211_IS_DSTODS(wh))
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187 size += IEEE80211_ADDR_LEN;
188 if (IEEE80211_QOS_HAS_SEQ(wh))
189 size += sizeof(uint16_t);
190 return size;
191}
192
193/*
32176cfd 194 * Like ieee80211_hdrsize, but handles any type of frame.
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195 */
196static __inline int
197ieee80211_anyhdrsize(const void *data)
198{
199 const struct ieee80211_frame *wh = data;
200
201 if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) {
202 switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
203 case IEEE80211_FC0_SUBTYPE_CTS:
204 case IEEE80211_FC0_SUBTYPE_ACK:
205 return sizeof(struct ieee80211_frame_ack);
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206 case IEEE80211_FC0_SUBTYPE_BAR:
207 return sizeof(struct ieee80211_frame_bar);
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208 }
209 return sizeof(struct ieee80211_frame_min);
210 } else
211 return ieee80211_hdrsize(data);
212}
213
214/*
215 * Template for an in-kernel authenticator. Authenticators
216 * register with the protocol code and are typically loaded
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217 * as separate modules as needed. One special authenticator
218 * is xauth; it intercepts requests so that protocols like
219 * WPA can be handled in user space.
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220 */
221struct ieee80211_authenticator {
222 const char *ia_name; /* printable name */
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223 int (*ia_attach)(struct ieee80211vap *);
224 void (*ia_detach)(struct ieee80211vap *);
225 void (*ia_node_join)(struct ieee80211_node *);
226 void (*ia_node_leave)(struct ieee80211_node *);
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227};
228void ieee80211_authenticator_register(int type,
229 const struct ieee80211_authenticator *);
230void ieee80211_authenticator_unregister(int type);
231const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth);
232
233struct ieee80211req;
234/*
235 * Template for an MAC ACL policy module. Such modules
236 * register with the protocol code and are passed the sender's
32176cfd 237 * address of each received auth frame for validation.
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238 */
239struct ieee80211_aclator {
240 const char *iac_name; /* printable name */
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241 int (*iac_attach)(struct ieee80211vap *);
242 void (*iac_detach)(struct ieee80211vap *);
243 int (*iac_check)(struct ieee80211vap *,
085ff963 244 const struct ieee80211_frame *wh);
32176cfd 245 int (*iac_add)(struct ieee80211vap *,
841ab66c 246 const uint8_t mac[IEEE80211_ADDR_LEN]);
32176cfd 247 int (*iac_remove)(struct ieee80211vap *,
841ab66c 248 const uint8_t mac[IEEE80211_ADDR_LEN]);
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249 int (*iac_flush)(struct ieee80211vap *);
250 int (*iac_setpolicy)(struct ieee80211vap *, int);
251 int (*iac_getpolicy)(struct ieee80211vap *);
252 int (*iac_setioctl)(struct ieee80211vap *, struct ieee80211req *);
253 int (*iac_getioctl)(struct ieee80211vap *, struct ieee80211req *);
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254};
255void ieee80211_aclator_register(const struct ieee80211_aclator *);
256void ieee80211_aclator_unregister(const struct ieee80211_aclator *);
257const struct ieee80211_aclator *ieee80211_aclator_get(const char *name);
258
259/* flags for ieee80211_fix_rate() */
260#define IEEE80211_F_DOSORT 0x00000001 /* sort rate list */
32176cfd 261#define IEEE80211_F_DOFRATE 0x00000002 /* use fixed legacy rate */
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262#define IEEE80211_F_DONEGO 0x00000004 /* calc negotiated rate */
263#define IEEE80211_F_DODEL 0x00000008 /* delete ignore rate */
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264#define IEEE80211_F_DOBRS 0x00000010 /* check basic rate set */
265#define IEEE80211_F_JOIN 0x00000020 /* sta joining our bss */
266#define IEEE80211_F_DOFMCS 0x00000040 /* use fixed HT rate */
267int ieee80211_fix_rate(struct ieee80211_node *,
268 struct ieee80211_rateset *, int);
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269
270/*
271 * WME/WMM support.
272 */
273struct wmeParams {
274 uint8_t wmep_acm;
275 uint8_t wmep_aifsn;
276 uint8_t wmep_logcwmin; /* log2(cwmin) */
277 uint8_t wmep_logcwmax; /* log2(cwmax) */
278 uint8_t wmep_txopLimit;
279 uint8_t wmep_noackPolicy; /* 0 (ack), 1 (no ack) */
280};
281#define IEEE80211_TXOP_TO_US(_txop) ((_txop)<<5)
282#define IEEE80211_US_TO_TXOP(_us) ((_us)>>5)
283
284struct chanAccParams {
285 uint8_t cap_info; /* version of the current set */
286 struct wmeParams cap_wmeParams[WME_NUM_AC];
287};
288
289struct ieee80211_wme_state {
290 u_int wme_flags;
291#define WME_F_AGGRMODE 0x00000001 /* STATUS: WME agressive mode */
292 u_int wme_hipri_traffic; /* VI/VO frames in beacon interval */
293 u_int wme_hipri_switch_thresh;/* agressive mode switch thresh */
294 u_int wme_hipri_switch_hysteresis;/* agressive mode switch hysteresis */
295
296 struct wmeParams wme_params[4]; /* from assoc resp for each AC*/
297 struct chanAccParams wme_wmeChanParams; /* WME params applied to self */
298 struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */
299 struct chanAccParams wme_chanParams; /* params applied to self */
300 struct chanAccParams wme_bssChanParams; /* params bcast to stations */
301
302 int (*wme_update)(struct ieee80211com *);
303};
304
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305void ieee80211_wme_initparams(struct ieee80211vap *);
306void ieee80211_wme_updateparams(struct ieee80211vap *);
307void ieee80211_wme_updateparams_locked(struct ieee80211vap *);
841ab66c 308
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309/*
310 * Return the WME TID from a QoS frame. If no TID
311 * is present return the index for the "non-QoS" entry.
312 */
313static __inline uint8_t
314ieee80211_gettid(const struct ieee80211_frame *wh)
315{
316 uint8_t tid;
317
318 if (IEEE80211_QOS_HAS_SEQ(wh)) {
319 if (IEEE80211_IS_DSTODS(wh))
320 tid = ((const struct ieee80211_qosframe_addr4 *)wh)->
321 i_qos[0];
322 else
323 tid = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
324 tid &= IEEE80211_QOS_TID;
325 } else
326 tid = IEEE80211_NONQOS_TID;
327 return tid;
328}
329
330void ieee80211_waitfor_parent(struct ieee80211com *);
331void ieee80211_start_locked(struct ieee80211vap *);
332void ieee80211_init(void *);
333void ieee80211_start_all(struct ieee80211com *);
334void ieee80211_stop_locked(struct ieee80211vap *);
335void ieee80211_stop(struct ieee80211vap *);
336void ieee80211_stop_all(struct ieee80211com *);
337void ieee80211_suspend_all(struct ieee80211com *);
338void ieee80211_resume_all(struct ieee80211com *);
339void ieee80211_dturbo_switch(struct ieee80211vap *, int newflags);
085ff963 340void ieee80211_swbmiss(void *arg);
841ab66c 341void ieee80211_beacon_miss(struct ieee80211com *);
32176cfd 342int ieee80211_new_state(struct ieee80211vap *, enum ieee80211_state, int);
085ff963 343int ieee80211_new_state_locked(struct ieee80211vap *, enum ieee80211_state,
d98a0bcf 344 int);
841ab66c 345void ieee80211_print_essid(const uint8_t *, int);
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346void ieee80211_dump_pkt(struct ieee80211com *,
347 const uint8_t *, int, int, int);
f186073c 348
32176cfd 349extern const char *ieee80211_opmode_name[];
f186073c 350extern const char *ieee80211_state_name[IEEE80211_S_MAX];
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351extern const char *ieee80211_wme_acnames[];
352
353/*
354 * Beacon frames constructed by ieee80211_beacon_alloc
355 * have the following structure filled in so drivers
356 * can update the frame later w/ minimal overhead.
357 */
358struct ieee80211_beacon_offsets {
32176cfd 359 uint8_t bo_flags[4]; /* update/state flags */
841ab66c 360 uint16_t *bo_caps; /* capabilities */
32176cfd 361 uint8_t *bo_cfp; /* start of CFParms element */
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362 uint8_t *bo_tim; /* start of atim/dtim */
363 uint8_t *bo_wme; /* start of WME parameters */
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364 uint8_t *bo_tdma; /* start of TDMA parameters */
365 uint8_t *bo_tim_trailer;/* start of fixed-size trailer */
841ab66c 366 uint16_t bo_tim_len; /* atim/dtim length in bytes */
32176cfd 367 uint16_t bo_tim_trailer_len;/* tim trailer length in bytes */
841ab66c 368 uint8_t *bo_erp; /* start of ERP element */
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369 uint8_t *bo_htinfo; /* start of HT info element */
370 uint8_t *bo_ath; /* start of ATH parameters */
371 uint8_t *bo_appie; /* start of AppIE element */
372 uint16_t bo_appie_len; /* AppIE length in bytes */
373 uint16_t bo_csa_trailer_len;
374 uint8_t *bo_csa; /* start of CSA element */
085ff963 375 uint8_t *bo_quiet; /* start of Quiet element */
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376 uint8_t *bo_meshconf; /* start of MESHCONF element */
377 uint8_t *bo_spare[3];
841ab66c 378};
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379struct mbuf *ieee80211_beacon_alloc(struct ieee80211_node *,
380 struct ieee80211_beacon_offsets *);
841ab66c 381
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382/*
383 * Beacon frame updates are signaled through calls to iv_update_beacon
384 * with one of the IEEE80211_BEACON_* tokens defined below. For devices
385 * that construct beacon frames on the host this can trigger a rebuild
386 * or defer the processing. For devices that offload beacon frame
387 * handling this callback can be used to signal a rebuild. The bo_flags
388 * array in the ieee80211_beacon_offsets structure is intended to record
389 * deferred processing requirements; ieee80211_beacon_update uses the
390 * state to optimize work. Since this structure is owned by the driver
391 * and not visible to the 802.11 layer drivers must supply an iv_update_beacon
392 * callback that marks the flag bits and schedules (as necessary) an update.
393 */
394enum {
395 IEEE80211_BEACON_CAPS = 0, /* capabilities */
396 IEEE80211_BEACON_TIM = 1, /* DTIM/ATIM */
397 IEEE80211_BEACON_WME = 2,
398 IEEE80211_BEACON_ERP = 3, /* Extended Rate Phy */
399 IEEE80211_BEACON_HTINFO = 4, /* HT Information */
400 IEEE80211_BEACON_APPIE = 5, /* Application IE's */
401 IEEE80211_BEACON_CFP = 6, /* CFParms */
402 IEEE80211_BEACON_CSA = 7, /* Channel Switch Announcement */
403 IEEE80211_BEACON_TDMA = 9, /* TDMA Info */
404 IEEE80211_BEACON_ATH = 10, /* ATH parameters */
405 IEEE80211_BEACON_MESHCONF = 11, /* Mesh Configuration */
406};
407int ieee80211_beacon_update(struct ieee80211_node *,
408 struct ieee80211_beacon_offsets *, struct mbuf *, int mcast);
3da93495 409
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410void ieee80211_csa_startswitch(struct ieee80211com *,
411 struct ieee80211_channel *, int mode, int count);
412void ieee80211_csa_completeswitch(struct ieee80211com *);
413void ieee80211_csa_cancelswitch(struct ieee80211com *);
414void ieee80211_cac_completeswitch(struct ieee80211vap *);
2d7dda79 415
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416/*
417 * Notification methods called from the 802.11 state machine.
418 * Note that while these are defined here, their implementation
419 * is OS-specific.
420 */
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421void ieee80211_notify_node_join(struct ieee80211_node *, int newassoc);
422void ieee80211_notify_node_leave(struct ieee80211_node *);
423void ieee80211_notify_scan_done(struct ieee80211vap *);
424void ieee80211_notify_wds_discover(struct ieee80211_node *);
425void ieee80211_notify_csa(struct ieee80211com *,
426 const struct ieee80211_channel *, int mode, int count);
427void ieee80211_notify_radar(struct ieee80211com *,
428 const struct ieee80211_channel *);
429enum ieee80211_notify_cac_event {
430 IEEE80211_NOTIFY_CAC_START = 0, /* CAC timer started */
431 IEEE80211_NOTIFY_CAC_STOP = 1, /* CAC intentionally stopped */
432 IEEE80211_NOTIFY_CAC_RADAR = 2, /* CAC stopped due to radar detectio */
433 IEEE80211_NOTIFY_CAC_EXPIRE = 3, /* CAC expired w/o radar */
434};
435void ieee80211_notify_cac(struct ieee80211com *,
436 const struct ieee80211_channel *,
437 enum ieee80211_notify_cac_event);
438void ieee80211_notify_node_deauth(struct ieee80211_node *);
439void ieee80211_notify_node_auth(struct ieee80211_node *);
440void ieee80211_notify_country(struct ieee80211vap *, const uint8_t [],
441 const uint8_t cc[2]);
442void ieee80211_notify_radio(struct ieee80211com *, int);
841ab66c 443#endif /* _NET80211_IEEE80211_PROTO_H_ */