1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2001 Atsushi Onoe
5 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28#ifndef _NET80211_IEEE80211_NODE_H_
29#define _NET80211_IEEE80211_NODE_H_
30
31#include <net80211/ieee80211_ioctl.h> /* for ieee80211_nodestats */
32#include <net80211/ieee80211_ht.h> /* for aggregation state */
33
34/*
35 * Each ieee80211com instance has a single timer that fires every
36 * IEEE80211_INACT_WAIT seconds to handle "inactivity processing".
37 * This is used to do node inactivity processing when operating
38 * as an AP, adhoc or mesh mode. For inactivity processing each node
39 * has a timeout set in its ni_inact field that is decremented
40 * on each timeout and the node is reclaimed when the counter goes
41 * to zero. We use different inactivity timeout values depending
42 * on whether the node is associated and authorized (either by
43 * 802.1x or open/shared key authentication) or associated but yet
44 * to be authorized. The latter timeout is shorter to more aggressively
45 * reclaim nodes that leave part way through the 802.1x exchange.
46 */
47#define IEEE80211_INACT_WAIT 15 /* inactivity interval (secs) */
48#define IEEE80211_INACT_INIT (30/IEEE80211_INACT_WAIT) /* initial */
49#define IEEE80211_INACT_AUTH (180/IEEE80211_INACT_WAIT) /* associated but not authorized */
50#define IEEE80211_INACT_RUN (300/IEEE80211_INACT_WAIT) /* authorized */
51#define IEEE80211_INACT_PROBE (30/IEEE80211_INACT_WAIT) /* probe */
52#define IEEE80211_INACT_SCAN (300/IEEE80211_INACT_WAIT) /* scanned */
53
54#define IEEE80211_TRANS_WAIT 2 /* mgt frame tx timer (secs) */
55
56/* threshold for aging overlapping non-ERP bss */
57#define IEEE80211_NONERP_PRESENT_AGE msecs_to_ticks(60*1000)
58
59#define IEEE80211_NODE_HASHSIZE 32 /* NB: hash size must be pow2 */
60/* simple hash is enough for variation of macaddr */
61#define IEEE80211_NODE_HASH(ic, addr) \
62 (((const uint8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % \
63 IEEE80211_NODE_HASHSIZE)
64
65struct ieee80211_node_table;
66struct ieee80211com;
67struct ieee80211vap;
68struct ieee80211_scanparams;
69
70/*
71 * Information element (IE) ``blob''. We use this structure
72 * to capture management frame payloads that need to be
73 * retained. Information elements within the payload that
74 * we need to consult have references recorded.
75 */
76struct ieee80211_ies {
77 /* the following are either NULL or point within data */
78 uint8_t *wpa_ie; /* captured WPA ie */
79 uint8_t *rsn_ie; /* captured RSN ie */
80 uint8_t *wme_ie; /* captured WME ie */
81 uint8_t *ath_ie; /* captured Atheros ie */
82 uint8_t *htcap_ie; /* captured HTCAP ie */
83 uint8_t *htinfo_ie; /* captured HTINFO ie */
84 uint8_t *tdma_ie; /* captured TDMA ie */
85 uint8_t *meshid_ie; /* captured MESH ID ie */
86 uint8_t *vhtcap_ie; /* captured VHTCAP ie */
87 uint8_t *vhtopmode_ie; /* captured VHTOPMODE ie */
88 uint8_t *vhtpwrenv_ie; /* captured VHTPWRENV ie */
89 uint8_t *apchanrep_ie; /* captured APCHANREP ie */
90 uint8_t *bssload_ie; /* captured BSSLOAD ie */
91 uint8_t *spare[4];
92 /* NB: these must be the last members of this structure */
93 uint8_t *data; /* frame data > 802.11 header */
94 int len; /* data size in bytes */
95};
96
97/*
98 * 802.11s (Mesh) Peer Link FSM state.
99 */
100enum ieee80211_mesh_mlstate {
101 IEEE80211_NODE_MESH_IDLE = 0,
102 IEEE80211_NODE_MESH_OPENSNT = 1, /* open frame sent */
103 IEEE80211_NODE_MESH_OPENRCV = 2, /* open frame received */
104 IEEE80211_NODE_MESH_CONFIRMRCV = 3, /* confirm frame received */
105 IEEE80211_NODE_MESH_ESTABLISHED = 4, /* link established */
106 IEEE80211_NODE_MESH_HOLDING = 5, /* link closing */
107};
108#define IEEE80211_MESH_MLSTATE_BITS \
109 "\20\1IDLE\2OPENSNT\2OPENRCV\3CONFIRMRCV\4ESTABLISHED\5HOLDING"
110
111/*
112 * This enum was shared with the LinuxKPI enum ieee80211_sta_rx_bandwidth
113 * describing up-to which channel width the station can receive.
114 * Rather than using hardcoded MHz values for the channel width use an enum with
115 * flags. This allows us to keep the uint8_t slot for ni_chw in
116 * struct ieee80211_node it means we do not have to sync to the value for
117 * LinuxKPI (just the names).
118 *
119 * NB: BW_20 needs to 0 and values need to be sorted! Cannot make it
120 * bitfield-alike for use with %b.
121 */
122enum net80211_sta_rx_bw {
123 NET80211_STA_RX_BW_20 = 0x00,
124 NET80211_STA_RX_BW_40,
125 NET80211_STA_RX_BW_80,
126 NET80211_STA_RX_BW_160,
127 NET80211_STA_RX_BW_320,
128} __packed;
129
130static inline const char *
131net80211_ni_chw_to_str(enum net80211_sta_rx_bw bw)
132{
133 switch (bw) {
134 case NET80211_STA_RX_BW_20: return ("BW_20");
135 case NET80211_STA_RX_BW_40: return ("BW_40");
136 case NET80211_STA_RX_BW_80: return ("BW_80");
137 case NET80211_STA_RX_BW_160: return ("BW_160");
138 case NET80211_STA_RX_BW_320: return ("BW_320");
139 }
140}
141
142enum ieee80211_node_txrate_type {
143 IEEE80211_NODE_TXRATE_UNDEFINED = 0,
144 IEEE80211_NODE_TXRATE_LEGACY = 1, /* CCK/OFDM, HT for now */
145 IEEE80211_NODE_TXRATE_HT = 2, /* HT */
146 IEEE80211_NODE_TXRATE_VHT = 3, /* VHT */
147};
148
149struct ieee80211_node_txrate {
150 enum ieee80211_node_txrate_type type;
151 uint8_t nss; /* VHT - number of spatial streams */
152 uint8_t mcs; /* HT/VHT - MCS */
153 uint8_t dot11rate; /* Legacy/HT - dot11rate / ratecode */
154};
155
156#define IEEE80211_NODE_TXRATE_INIT_LEGACY(rate) \
157 (struct ieee80211_node_txrate) { .type = IEEE80211_NODE_TXRATE_LEGACY, \
158 .nss = 0, \
159 .mcs = 0, \
160 .dot11rate = (rate) }
161
162#define IEEE80211_NODE_TXRATE_INIT_HT(i_mcs) \
163 (struct ieee80211_node_txrate) { .type = IEEE80211_NODE_TXRATE_HT, \
164 .nss = 0, \
165 .mcs = (i_mcs), \
166 .dot11rate = (i_mcs) | IEEE80211_RATE_MCS }
167
168#define IEEE80211_NODE_TXRATE_INIT_VHT(i_nss, i_mcs) \
169 (struct ieee80211_node_txrate) { .type = IEEE80211_NODE_TXRATE_VHT, \
170 .nss = (i_nss), \
171 .mcs = (i_mcs), \
172 .dot11rate = 0 }
173
174/*
175 * Node specific information. Note that drivers are expected
176 * to derive from this structure to add device-specific per-node
177 * state. This is done by overriding the ic_node_* methods in
178 * the ieee80211com structure.
179 */
180struct ieee80211_node {
181 struct ieee80211vap *ni_vap; /* associated vap */
182 struct ieee80211com *ni_ic; /* copy from vap to save deref*/
183 struct ieee80211_node_table *ni_table; /* NB: may be NULL */
184 TAILQ_ENTRY(ieee80211_node) ni_list; /* list of all nodes */
185 LIST_ENTRY(ieee80211_node) ni_hash; /* hash collision list */
186 u_int ni_refcnt; /* count of held references */
187 u_int ni_flags;
188#define IEEE80211_NODE_AUTH 0x000001 /* authorized for data */
189#define IEEE80211_NODE_QOS 0x000002 /* QoS enabled */
190#define IEEE80211_NODE_ERP 0x000004 /* ERP enabled */
191/* NB: this must have the same value as IEEE80211_FC1_PWR_MGT */
192#define IEEE80211_NODE_PWR_MGT 0x000010 /* power save mode enabled */
193#define IEEE80211_NODE_AREF 0x000020 /* authentication ref held */
194#define IEEE80211_NODE_HT 0x000040 /* HT enabled */
195#define IEEE80211_NODE_HTCOMPAT 0x000080 /* HT setup w/ vendor OUI's */
196#define IEEE80211_NODE_WPS 0x000100 /* WPS association */
197#define IEEE80211_NODE_TSN 0x000200 /* TSN association */
198#define IEEE80211_NODE_AMPDU_RX 0x000400 /* AMPDU rx enabled */
199#define IEEE80211_NODE_AMPDU_TX 0x000800 /* AMPDU tx enabled */
200#define IEEE80211_NODE_MIMO_PS 0x001000 /* MIMO power save enabled */
201#define IEEE80211_NODE_MIMO_RTS 0x002000 /* send RTS in MIMO PS */
202#define IEEE80211_NODE_RIFS 0x004000 /* RIFS enabled */
203#define IEEE80211_NODE_SGI20 0x008000 /* Short GI in HT20 enabled */
204#define IEEE80211_NODE_SGI40 0x010000 /* Short GI in HT40 enabled */
205#define IEEE80211_NODE_ASSOCID 0x020000 /* xmit requires associd */
206#define IEEE80211_NODE_AMSDU_RX 0x040000 /* AMSDU rx enabled */
207#define IEEE80211_NODE_AMSDU_TX 0x080000 /* AMSDU tx enabled */
208#define IEEE80211_NODE_VHT 0x100000 /* VHT enabled */
209#define IEEE80211_NODE_LDPC 0x200000 /* LDPC enabled */
210#define IEEE80211_NODE_UAPSD 0x400000 /* U-APSD power save enabled */
211 uint16_t ni_associd; /* association ID */
212 uint16_t ni_vlan; /* vlan tag */
213 uint16_t ni_txpower; /* current transmit power */
214 uint8_t ni_authmode; /* authentication algorithm */
215 uint8_t ni_ath_flags; /* Atheros feature flags */
216 /* NB: These must have the same values as IEEE80211_ATHC_* */
217#define IEEE80211_NODE_TURBOP 0x0001 /* Turbo prime enable */
218#define IEEE80211_NODE_COMP 0x0002 /* Compresssion enable */
219#define IEEE80211_NODE_FF 0x0004 /* Fast Frame capable */
220#define IEEE80211_NODE_XR 0x0008 /* Atheros WME enable */
221#define IEEE80211_NODE_AR 0x0010 /* AR capable */
222#define IEEE80211_NODE_BOOST 0x0080 /* Dynamic Turbo boosted */
223 uint16_t ni_ath_defkeyix;/* Atheros def key index */
224 const struct ieee80211_txparam *ni_txparms;
225 uint32_t ni_jointime; /* time of join (secs) */
226 uint32_t *ni_challenge; /* shared-key challenge */
227 struct ieee80211_ies ni_ies; /* captured ie's */
228 /* tx seq per-tid */
229 ieee80211_seq ni_txseqs[IEEE80211_TID_SIZE];
230 /* rx seq previous per-tid*/
231 ieee80211_seq ni_rxseqs[IEEE80211_TID_SIZE];
232 uint32_t ni_rxfragstamp; /* time stamp of last rx frag */
233 struct mbuf *ni_rxfrag[3]; /* rx frag reassembly */
234 struct ieee80211_key ni_ucastkey; /* unicast key */
235
236 /* hardware */
237 uint32_t ni_avgrssi; /* recv ssi state */
238 int8_t ni_noise; /* noise floor */
239
240 /* mimo statistics */
241 uint32_t ni_mimo_rssi_ctl[IEEE80211_MAX_CHAINS];
242 uint32_t ni_mimo_rssi_ext[IEEE80211_MAX_CHAINS];
243 uint8_t ni_mimo_noise_ctl[IEEE80211_MAX_CHAINS];
244 uint8_t ni_mimo_noise_ext[IEEE80211_MAX_CHAINS];
245 uint8_t ni_mimo_chains;
246
247 /* header */
248 uint8_t ni_macaddr[IEEE80211_ADDR_LEN];
249 uint8_t ni_bssid[IEEE80211_ADDR_LEN];
250
251 /* beacon, probe response */
252 union {
253 uint8_t data[8];
254 u_int64_t tsf;
255 } ni_tstamp; /* from last rcv'd beacon */
256 uint16_t ni_intval; /* beacon interval */
257 uint16_t ni_capinfo; /* capabilities */
258 uint8_t ni_esslen;
259 uint8_t ni_essid[IEEE80211_NWID_LEN];
260 struct ieee80211_rateset ni_rates; /* negotiated rate set */
261 struct ieee80211_channel *ni_chan;
262 uint16_t ni_fhdwell; /* FH only */
263 uint8_t ni_fhindex; /* FH only */
264 uint16_t ni_erp; /* ERP from beacon/probe resp */
265 uint16_t ni_timoff; /* byte offset to TIM ie */
266 uint8_t ni_dtim_period; /* DTIM period */
267 uint8_t ni_dtim_count; /* DTIM count for last bcn */
268
269 /* 11s state */
270 uint8_t ni_meshidlen;
271 uint8_t ni_meshid[IEEE80211_MESHID_LEN];
272 enum ieee80211_mesh_mlstate ni_mlstate; /* peering management state */
273 uint16_t ni_mllid; /* link local ID */
274 uint16_t ni_mlpid; /* link peer ID */
275 struct callout ni_mltimer; /* link mesh timer */
276 uint8_t ni_mlrcnt; /* link mesh retry counter */
277 uint8_t ni_mltval; /* link mesh timer value */
278 struct callout ni_mlhtimer; /* link mesh backoff timer */
279 uint8_t ni_mlhcnt; /* link mesh holding counter */
280
281 /* 11n state */
282 uint16_t ni_htcap; /* HT capabilities */
283 uint8_t ni_htparam; /* HT params */
284 uint8_t ni_htctlchan; /* HT control channel */
285 uint8_t ni_ht2ndchan; /* HT 2nd channel */
286 uint8_t ni_htopmode; /* HT operating mode */
287 uint8_t ni_htstbc; /* HT */
288 enum net80211_sta_rx_bw ni_chw; /* negotiated channel width */
289 struct ieee80211_htrateset ni_htrates; /* negotiated ht rate set */
290 struct ieee80211_tx_ampdu ni_tx_ampdu[WME_NUM_TID];
291 struct ieee80211_rx_ampdu ni_rx_ampdu[WME_NUM_TID];
292
293 /* VHT state */
294 uint32_t ni_vhtcap;
295 uint16_t ni_vht_basicmcs; /* Basic VHT MCS bitmap from IE */
296 uint16_t ni_vht_tx_map; /* Negotiated MCS TX map with peer */
297 struct ieee80211_vht_mcs_info ni_vht_mcsinfo;
298 uint8_t ni_vht_chan1; /* 20/40/80/160 - VHT chan1 */
299 uint8_t ni_vht_chan2; /* 80+80 - VHT chan2 */
300 uint8_t ni_vht_chanwidth; /* IEEE80211_VHT_CHANWIDTH_ */
301 uint8_t ni_vht_pad1;
302 uint32_t ni_vht_spare[8];
303
304 /* fast-frames state */
305 struct mbuf * ni_tx_superg[WME_NUM_TID];
306
307 /* others */
308 short ni_inact; /* inactivity mark count */
309 short ni_inact_reload;/* inactivity reload value */
310 struct ieee80211_node_txrate ni_txrate; /* current transmit rate */
311 struct ieee80211_psq ni_psq; /* power save queue */
312 struct ieee80211_nodestats ni_stats; /* per-node statistics */
313
314 struct ieee80211vap *ni_wdsvap; /* associated WDS vap */
315 void *ni_rctls; /* private ratectl state */
316
317 /* quiet time IE state for the given node */
318 uint32_t ni_quiet_ie_set; /* Quiet time IE was seen */
319 struct ieee80211_quiet_ie ni_quiet_ie; /* last seen quiet IE */
320
321 /* U-APSD */
322 uint8_t ni_uapsd; /* U-APSD per-node flags matching WMM STA QoS Info field */
323
324 void *ni_drv_data; /* driver specific */
325
326 uint64_t ni_spare[3];
327};
328MALLOC_DECLARE(M_80211_NODE);
329MALLOC_DECLARE(M_80211_NODE_IE);
330
331#define IEEE80211_NODE_ATH (IEEE80211_NODE_FF | IEEE80211_NODE_TURBOP)
332#define IEEE80211_NODE_AMPDU \
333 (IEEE80211_NODE_AMPDU_RX | IEEE80211_NODE_AMPDU_TX)
334#define IEEE80211_NODE_AMSDU \
335 (IEEE80211_NODE_AMSDU_RX | IEEE80211_NODE_AMSDU_TX)
336#define IEEE80211_NODE_HT_ALL \
337 (IEEE80211_NODE_HT | IEEE80211_NODE_HTCOMPAT | \
338 IEEE80211_NODE_AMPDU | IEEE80211_NODE_AMSDU | \
339 IEEE80211_NODE_MIMO_PS | IEEE80211_NODE_MIMO_RTS | \
340 IEEE80211_NODE_RIFS | IEEE80211_NODE_SGI20 | IEEE80211_NODE_SGI40)
341
342#define IEEE80211_NODE_BITS \
343 "\20\1AUTH\2QOS\3ERP\5PWR_MGT\6AREF\7HT\10HTCOMPAT\11WPS\12TSN" \
344 "\13AMPDU_RX\14AMPDU_TX\15MIMO_PS\16MIMO_RTS\17RIFS\20SGI20\21SGI40" \
345 "\22ASSOCID\23AMSDU_RX\24AMSDU_TX\25VHT\26LDPC\27UAPSD"
346
347#define IEEE80211_NODE_AID(ni) IEEE80211_AID(ni->ni_associd)
348
349#define IEEE80211_NODE_STAT(ni,stat) (ni->ni_stats.ns_##stat++)
350#define IEEE80211_NODE_STAT_ADD(ni,stat,v) (ni->ni_stats.ns_##stat += v)
351#define IEEE80211_NODE_STAT_SET(ni,stat,v) (ni->ni_stats.ns_##stat = v)
352
353/*
354 * Filtered rssi calculation support. The receive rssi is maintained
355 * as an average over the last 10 frames received using a low pass filter
356 * (all frames for now, possibly need to be more selective). Calculations
357 * are designed such that a good compiler can optimize them. The avg
358 * rssi state should be initialized to IEEE80211_RSSI_DUMMY_MARKER and
359 * each sample incorporated with IEEE80211_RSSI_LPF. Use IEEE80211_RSSI_GET
360 * to extract the current value.
361 *
362 * Note that we assume rssi data are in the range [-127..127] and we
363 * discard values <-20. This is consistent with assumptions throughout
364 * net80211 that signal strength data are in .5 dBm units relative to
365 * the current noise floor (linear, not log).
366 */
367#define IEEE80211_RSSI_LPF_LEN 10
368#define IEEE80211_RSSI_DUMMY_MARKER 127
369/* NB: pow2 to optimize out * and / */
370#define IEEE80211_RSSI_EP_MULTIPLIER (1<<7)
371#define IEEE80211_RSSI_IN(x) ((x) * IEEE80211_RSSI_EP_MULTIPLIER)
372#define _IEEE80211_RSSI_LPF(x, y, len) \
373 (((x) != IEEE80211_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
374#define IEEE80211_RSSI_LPF(x, y) do { \
375 if ((y) >= -20) { \
376 x = _IEEE80211_RSSI_LPF((x), IEEE80211_RSSI_IN((y)), \
377 IEEE80211_RSSI_LPF_LEN); \
378 } \
379} while (0)
380#define IEEE80211_RSSI_EP_RND(x, mul) \
381 ((((x) % (mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
382#define IEEE80211_RSSI_GET(x) \
383 IEEE80211_RSSI_EP_RND(x, IEEE80211_RSSI_EP_MULTIPLIER)
384
385void ieee80211_node_attach(struct ieee80211com *);
386void ieee80211_node_lateattach(struct ieee80211com *);
387void ieee80211_node_detach(struct ieee80211com *);
388void ieee80211_node_vattach(struct ieee80211vap *);
389void ieee80211_node_latevattach(struct ieee80211vap *);
390void ieee80211_node_vdetach(struct ieee80211vap *);
391
392static __inline int
393ieee80211_node_is_authorized(const struct ieee80211_node *ni)
394{
395 return (ni->ni_flags & IEEE80211_NODE_AUTH);
396}
397
398void ieee80211_node_authorize(struct ieee80211_node *);
399void ieee80211_node_unauthorize(struct ieee80211_node *);
400
401void ieee80211_node_setuptxparms(struct ieee80211_node *);
402void ieee80211_node_set_chan(struct ieee80211_node *,
403 struct ieee80211_channel *);
404void ieee80211_create_ibss(struct ieee80211vap*, struct ieee80211_channel *);
405void ieee80211_reset_bss(struct ieee80211vap *);
406void ieee80211_sync_curchan(struct ieee80211com *);
407void ieee80211_setupcurchan(struct ieee80211com *,
408 struct ieee80211_channel *);
409void ieee80211_setcurchan(struct ieee80211com *, struct ieee80211_channel *);
410void ieee80211_update_chw(struct ieee80211com *);
411int ieee80211_ibss_merge_check(struct ieee80211_node *);
412int ieee80211_ibss_node_check_new(struct ieee80211_node *ni,
413 const struct ieee80211_scanparams *);
414int ieee80211_ibss_merge(struct ieee80211_node *);
415struct ieee80211_scan_entry;
416int ieee80211_sta_join(struct ieee80211vap *, struct ieee80211_channel *,
417 const struct ieee80211_scan_entry *);
418void ieee80211_sta_leave(struct ieee80211_node *);
419void ieee80211_node_deauth(struct ieee80211_node *, int);
420
421int ieee80211_ies_init(struct ieee80211_ies *, const uint8_t *, int);
422void ieee80211_ies_cleanup(struct ieee80211_ies *);
423void ieee80211_ies_expand(struct ieee80211_ies *);
424#define ieee80211_ies_setie(_ies, _ie, _off) do { \
425 (_ies)._ie = (_ies).data + (_off); \
426} while (0)
427
428/*
429 * Table of ieee80211_node instances. Each ieee80211com
430 * has one that holds association stations (when operating
431 * as an ap) or neighbors (in ibss mode).
432 *
433 * XXX embed this in ieee80211com instead of indirect?
434 */
435struct ieee80211_node_table {
436 struct ieee80211com *nt_ic; /* back reference */
437 ieee80211_node_lock_t nt_nodelock; /* on node table */
438 TAILQ_HEAD(, ieee80211_node) nt_node; /* information of all nodes */
439 LIST_HEAD(, ieee80211_node) nt_hash[IEEE80211_NODE_HASHSIZE];
440 int nt_count; /* number of nodes */
441 struct ieee80211_node **nt_keyixmap; /* key ix -> node map */
442 int nt_keyixmax; /* keyixmap size */
443 const char *nt_name; /* table name for debug msgs */
444 int nt_inact_init; /* initial node inact setting */
445};
446
447struct ieee80211_node *ieee80211_tmp_node(struct ieee80211vap *,
448 const uint8_t macaddr[IEEE80211_ADDR_LEN]);
449struct ieee80211_node *ieee80211_dup_bss(struct ieee80211vap *,
450 const uint8_t macaddr[IEEE80211_ADDR_LEN]);
451struct ieee80211_node *ieee80211_node_create_wds(struct ieee80211vap *,
452 const uint8_t bssid[IEEE80211_ADDR_LEN],
453 struct ieee80211_channel *);
454
455/* These functions are taking __func__, __LINE__ for IEEE80211_DEBUG_REFCNT */
456struct ieee80211_node *_ieee80211_ref_node(struct ieee80211_node *,
457 const char *func, int line);
458void _ieee80211_free_node(struct ieee80211_node *,
459 const char *func, int line);
460struct ieee80211_node *_ieee80211_find_node_locked(
461 struct ieee80211_node_table *,
462 const uint8_t macaddr[IEEE80211_ADDR_LEN],
463 const char *func, int line);
464struct ieee80211_node *_ieee80211_find_node(struct ieee80211_node_table *,
465 const uint8_t macaddr[IEEE80211_ADDR_LEN],
466 const char *func, int line);
467struct ieee80211_node *_ieee80211_find_vap_node_locked(
468 struct ieee80211_node_table *,
469 const struct ieee80211vap *vap,
470 const uint8_t macaddr[IEEE80211_ADDR_LEN],
471 const char *func, int line);
472struct ieee80211_node *_ieee80211_find_vap_node(
473 struct ieee80211_node_table *,
474 const struct ieee80211vap *vap,
475 const uint8_t macaddr[IEEE80211_ADDR_LEN],
476 const char *func, int line);
477struct ieee80211_node *_ieee80211_find_rxnode(struct ieee80211com *,
478 const struct ieee80211_frame_min *,
479 const char *func, int line);
480struct ieee80211_node *_ieee80211_find_rxnode_withkey(
481 struct ieee80211com *,
482 const struct ieee80211_frame_min *, uint16_t keyix,
483 const char *func, int line);
484struct ieee80211_node *_ieee80211_find_txnode(struct ieee80211vap *,
485 const uint8_t macaddr[IEEE80211_ADDR_LEN],
486 const char *func, int line);
487#define ieee80211_ref_node(ni) \
488 _ieee80211_ref_node(ni, __func__, __LINE__)
489#define ieee80211_free_node(ni) \
490 _ieee80211_free_node(ni, __func__, __LINE__)
491#define ieee80211_find_node_locked(nt, mac) \
492 _ieee80211_find_node_locked(nt, mac, __func__, __LINE__)
493#define ieee80211_find_node(nt, mac) \
494 _ieee80211_find_node(nt, mac, __func__, __LINE__)
495#define ieee80211_find_vap_node_locked(nt, vap, mac) \
496 _ieee80211_find_vap_node_locked(nt, vap, mac, __func__, __LINE__)
497#define ieee80211_find_vap_node(nt, vap, mac) \
498 _ieee80211_find_vap_node(nt, vap, mac, __func__, __LINE__)
499#define ieee80211_find_rxnode(ic, wh) \
500 _ieee80211_find_rxnode(ic, wh, __func__, __LINE__)
501#define ieee80211_find_rxnode_withkey(ic, wh, keyix) \
502 _ieee80211_find_rxnode_withkey(ic, wh, keyix, __func__, __LINE__)
503#define ieee80211_find_txnode(vap, mac) \
504 _ieee80211_find_txnode(vap, mac, __func__, __LINE__)
505
506int ieee80211_node_delucastkey(struct ieee80211_node *);
507void ieee80211_node_timeout(void *arg);
508
509typedef void ieee80211_iter_func(void *, struct ieee80211_node *);
510int ieee80211_iterate_nodes_vap(struct ieee80211_node_table *,
511 struct ieee80211vap *, ieee80211_iter_func *, void *);
512void ieee80211_iterate_nodes(struct ieee80211_node_table *,
513 ieee80211_iter_func *, void *);
514
515void ieee80211_notify_erp_locked(struct ieee80211com *);
516void ieee80211_dump_node(struct ieee80211_node_table *,
517 struct ieee80211_node *);
518void ieee80211_dump_nodes(struct ieee80211_node_table *);
519
520struct ieee80211_node *ieee80211_fakeup_adhoc_node(struct ieee80211vap *,
521 const uint8_t macaddr[IEEE80211_ADDR_LEN]);
522struct ieee80211_scanparams;
523void ieee80211_init_neighbor(struct ieee80211_node *,
524 const struct ieee80211_frame *,
525 const struct ieee80211_scanparams *);
526struct ieee80211_node *ieee80211_add_neighbor(struct ieee80211vap *,
527 const struct ieee80211_frame *,
528 const struct ieee80211_scanparams *);
529void ieee80211_node_join(struct ieee80211_node *,int);
530void ieee80211_node_leave(struct ieee80211_node *);
531int8_t ieee80211_getrssi(struct ieee80211vap *);
532void ieee80211_getsignal(struct ieee80211vap *, int8_t *, int8_t *);
533
534/* TX sequence space related routines */
535ieee80211_seq ieee80211_tx_seqno_fetch_incr(struct ieee80211_node *,
536 uint8_t);
537ieee80211_seq ieee80211_tx_seqno_fetch(const struct ieee80211_node *,
538 uint8_t);
539
540/*
541 * Node transmit rate specific manipulation.
542 *
543 * This should eventually be refactored into its own type.
544 */
545uint8_t ieee80211_node_get_txrate_dot11rate(struct ieee80211_node *);
546void ieee80211_node_get_txrate(struct ieee80211_node *,
547 struct ieee80211_node_txrate *);
548void ieee80211_node_set_txrate(struct ieee80211_node *,
549 const struct ieee80211_node_txrate *);
550void ieee80211_node_set_txrate_dot11rate(struct ieee80211_node *, uint8_t);
551void ieee80211_node_set_txrate_ht_mcsrate(struct ieee80211_node *, uint8_t);
552uint32_t ieee80211_node_get_txrate_kbit(struct ieee80211_node *);
553void ieee80211_node_set_txrate_vht_rate(struct ieee80211_node *ni,
554 uint8_t nss, uint8_t mcs);
555
556#endif /* _NET80211_IEEE80211_NODE_H_ */