Annotation of src/sys/net80211/ieee80211_node.h, Revision 1.13.2.8
1.13.2.8! christos 1: /* $NetBSD: ieee80211_node.h,v 1.13.2.7 2005/12/11 10:29:22 christos Exp $ */
1.13.2.2 skrll 2: /*-
3: * Copyright (c) 2001 Atsushi Onoe
1.13.2.7 skrll 4: * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
1.13.2.2 skrll 5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. The name of the author may not be used to endorse or promote products
16: * derived from this software without specific prior written permission.
17: *
18: * Alternatively, this software may be distributed under the terms of the
19: * GNU General Public License ("GPL") version 2 as published by the Free
20: * Software Foundation.
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32: *
1.13.2.8! christos 33: * $FreeBSD: src/sys/net80211/ieee80211_node.h,v 1.22 2005/08/10 16:22:29 sam Exp $
1.13.2.2 skrll 34: */
35: #ifndef _NET80211_IEEE80211_NODE_H_
36: #define _NET80211_IEEE80211_NODE_H_
37:
1.13.2.7 skrll 38: #include <net80211/ieee80211_netbsd.h>
39: #include <net80211/ieee80211_ioctl.h> /* for ieee80211_nodestats */
40:
41: /*
42: * Each ieee80211com instance has a single timer that fires once a
43: * second. This is used to initiate various work depending on the
44: * state of the instance: scanning (passive or active), ``transition''
45: * (waiting for a response to a management frame when operating
46: * as a station), and node inactivity processing (when operating
47: * as an AP). For inactivity processing each node has a timeout
48: * set in it's ni_inact field that is decremented on each timeout
49: * and the node is reclaimed when the counter goes to zero. We
50: * use different inactivity timeout values depending on whether
51: * the node is associated and authorized (either by 802.1x or
52: * open/shared key authentication) or associated but yet to be
53: * authorized. The latter timeout is shorter to more aggressively
54: * reclaim nodes that leave part way through the 802.1x exchange.
55: */
56: #define IEEE80211_INACT_WAIT 15 /* inactivity interval (secs) */
57: #define IEEE80211_INACT_INIT (30/IEEE80211_INACT_WAIT) /* initial */
58: #define IEEE80211_INACT_AUTH (180/IEEE80211_INACT_WAIT) /* associated but not authorized */
59: #define IEEE80211_INACT_RUN (300/IEEE80211_INACT_WAIT) /* authorized */
60: #define IEEE80211_INACT_PROBE (30/IEEE80211_INACT_WAIT) /* probe */
61: #define IEEE80211_INACT_SCAN (300/IEEE80211_INACT_WAIT) /* scanned */
62:
63: #define IEEE80211_TRANS_WAIT 5 /* mgt frame tx timer (secs) */
1.13.2.2 skrll 64:
65: #define IEEE80211_NODE_HASHSIZE 32
66: /* simple hash is enough for variation of macaddr */
67: #define IEEE80211_NODE_HASH(addr) \
1.13.2.7 skrll 68: (((const u_int8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % \
69: IEEE80211_NODE_HASHSIZE)
1.13.2.2 skrll 70:
1.13.2.7 skrll 71: struct ieee80211_rsnparms {
72: u_int8_t rsn_mcastcipher; /* mcast/group cipher */
73: u_int8_t rsn_mcastkeylen; /* mcast key length */
74: u_int8_t rsn_ucastcipherset; /* unicast cipher set */
75: u_int8_t rsn_ucastcipher; /* selected unicast cipher */
76: u_int8_t rsn_ucastkeylen; /* unicast key length */
77: u_int8_t rsn_keymgmtset; /* key mangement algorithms */
78: u_int8_t rsn_keymgmt; /* selected key mgmt algo */
79: u_int16_t rsn_caps; /* capabilities */
1.13.2.2 skrll 80: };
81:
1.13.2.7 skrll 82: struct ieee80211_node_table;
83: struct ieee80211com;
1.13.2.3 skrll 84:
1.13.2.2 skrll 85: /*
86: * Node specific information. Note that drivers are expected
87: * to derive from this structure to add device-specific per-node
88: * state. This is done by overriding the ic_node_* methods in
89: * the ieee80211com structure.
90: */
91: struct ieee80211_node {
1.13.2.7 skrll 92: struct ieee80211com *ni_ic;
93: struct ieee80211_node_table *ni_table;
1.13.2.2 skrll 94: TAILQ_ENTRY(ieee80211_node) ni_list;
95: LIST_ENTRY(ieee80211_node) ni_hash;
96: u_int ni_refcnt;
97: u_int ni_scangen; /* gen# for timeout scan */
1.13.2.7 skrll 98: u_int8_t ni_authmode; /* authentication algorithm */
99: u_int16_t ni_flags; /* special-purpose state */
100: #define IEEE80211_NODE_AUTH 0x0001 /* authorized for data */
101: #define IEEE80211_NODE_QOS 0x0002 /* QoS enabled */
102: #define IEEE80211_NODE_ERP 0x0004 /* ERP enabled */
103: /* NB: this must have the same value as IEEE80211_FC1_PWR_MGT */
104: #define IEEE80211_NODE_PWR_MGT 0x0010 /* power save mode enabled */
105: #define IEEE80211_NODE_AREF 0x0020 /* authentication ref held */
106: u_int16_t ni_associd; /* assoc response */
107: u_int16_t ni_txpower; /* current transmit power */
108: u_int16_t ni_vlan; /* vlan tag */
109: u_int32_t *ni_challenge; /* shared-key challenge */
110: u_int8_t *ni_wpa_ie; /* captured WPA/RSN ie */
111: u_int8_t *ni_wme_ie; /* captured WME ie */
112: u_int16_t ni_txseqs[17]; /* tx seq per-tid */
113: u_int16_t ni_rxseqs[17]; /* rx seq previous per-tid*/
114: u_int32_t ni_rxfragstamp; /* time stamp of last rx frag */
115: struct mbuf *ni_rxfrag[3]; /* rx frag reassembly */
116: struct ieee80211_rsnparms ni_rsn; /* RSN/WPA parameters */
117: struct ieee80211_key ni_ucastkey; /* unicast key */
1.13.2.2 skrll 118:
119: /* hardware */
120: u_int32_t ni_rstamp; /* recv timestamp */
121: u_int8_t ni_rssi; /* recv ssi */
122:
123: /* header */
124: u_int8_t ni_macaddr[IEEE80211_ADDR_LEN];
125: u_int8_t ni_bssid[IEEE80211_ADDR_LEN];
126:
127: /* beacon, probe response */
1.13.2.6 skrll 128: union {
1.13.2.7 skrll 129: u_int8_t data[8];
130: u_int64_t tsf;
131: } ni_tstamp; /* from last rcv'd beacon */
1.13.2.2 skrll 132: u_int16_t ni_intval; /* beacon interval */
133: u_int16_t ni_capinfo; /* capabilities */
134: u_int8_t ni_esslen;
135: u_int8_t ni_essid[IEEE80211_NWID_LEN];
136: struct ieee80211_rateset ni_rates; /* negotiated rate set */
1.13.2.8! christos 137: struct ieee80211_channel *ni_chan; /* XXX multiple uses */
1.13.2.2 skrll 138: u_int16_t ni_fhdwell; /* FH only */
139: u_int8_t ni_fhindex; /* FH only */
1.13.2.7 skrll 140: u_int8_t ni_erp; /* ERP from beacon/probe resp */
141: u_int16_t ni_timoff; /* byte offset to TIM ie */
142: u_int8_t ni_dtim_period; /* DTIM period */
143: u_int8_t ni_dtim_count; /* DTIM count for last bcn */
1.13.2.2 skrll 144:
145: /* others */
146: int ni_fails; /* failure count to associate */
1.13.2.7 skrll 147: short ni_inact; /* inactivity mark count */
148: short ni_inact_reload;/* inactivity reload value */
1.13.2.2 skrll 149: int ni_txrate; /* index to ni_rates[] */
1.13.2.7 skrll 150: struct ifqueue ni_savedq; /* ps-poll queue */
151: struct ieee80211_nodestats ni_stats; /* per-node statistics */
1.13.2.2 skrll 152: };
1.13.2.7 skrll 153: #ifdef _KERNEL
154: MALLOC_DECLARE(M_80211_NODE);
155: #endif /* _KERNEL */
1.13.2.2 skrll 156:
1.13.2.7 skrll 157: #define IEEE80211_NODE_AID(ni) IEEE80211_AID(ni->ni_associd)
1.13.2.2 skrll 158:
1.13.2.7 skrll 159: #define IEEE80211_NODE_STAT(ni,stat) (ni->ni_stats.ns_##stat++)
160: #define IEEE80211_NODE_STAT_ADD(ni,stat,v) (ni->ni_stats.ns_##stat += v)
161: #define IEEE80211_NODE_STAT_SET(ni,stat,v) (ni->ni_stats.ns_##stat = v)
1.13.2.2 skrll 162:
163: static __inline struct ieee80211_node *
164: ieee80211_ref_node(struct ieee80211_node *ni)
165: {
166: ieee80211_node_incref(ni);
167: return ni;
168: }
169:
170: static __inline void
171: ieee80211_unref_node(struct ieee80211_node **ni)
172: {
173: ieee80211_node_decref(*ni);
174: *ni = NULL; /* guard against use */
175: }
176:
177: struct ieee80211com;
178:
1.13.2.7 skrll 179: void ieee80211_node_attach(struct ieee80211com *);
180: void ieee80211_node_lateattach(struct ieee80211com *);
181: void ieee80211_node_detach(struct ieee80211com *);
1.13.2.2 skrll 182:
1.13.2.7 skrll 183: static __inline int
184: ieee80211_node_is_authorized(const struct ieee80211_node *ni)
185: {
186: return (ni->ni_flags & IEEE80211_NODE_AUTH);
187: }
188:
1.13.2.8! christos 189: void ieee80211_node_authorize(struct ieee80211_node *);
! 190: void ieee80211_node_unauthorize(struct ieee80211_node *);
1.13.2.7 skrll 191:
192: void ieee80211_begin_scan(struct ieee80211com *, int);
193: int ieee80211_next_scan(struct ieee80211com *);
194: void ieee80211_create_ibss(struct ieee80211com*, struct ieee80211_channel *);
195: void ieee80211_reset_bss(struct ieee80211com *);
196: void ieee80211_cancel_scan(struct ieee80211com *);
197: void ieee80211_end_scan(struct ieee80211com *);
1.13.2.8! christos 198: int ieee80211_ibss_merge(struct ieee80211_node *);
1.13.2.7 skrll 199: int ieee80211_sta_join(struct ieee80211com *, struct ieee80211_node *);
200: void ieee80211_sta_leave(struct ieee80211com *, struct ieee80211_node *);
201:
202: /*
203: * Table of ieee80211_node instances. Each ieee80211com
204: * has at least one for holding the scan candidates.
205: * When operating as an access point or in ibss mode there
206: * is a second table for associated stations or neighbors.
207: */
208: struct ieee80211_node_table {
209: struct ieee80211com *nt_ic; /* back reference */
210: ieee80211_node_lock_t nt_nodelock; /* on node table */
211: TAILQ_HEAD(, ieee80211_node) nt_node; /* information of all nodes */
212: LIST_HEAD(, ieee80211_node) nt_hash[IEEE80211_NODE_HASHSIZE];
213: const char *nt_name; /* for debugging */
214: ieee80211_scan_lock_t nt_scanlock; /* on nt_scangen */
215: u_int nt_scangen; /* gen# for timeout scan */
216: int nt_inact_timer; /* inactivity timer */
217: int nt_inact_init; /* initial node inact setting */
1.13.2.8! christos 218: struct ieee80211_node **nt_keyixmap; /* key ix -> node map */
! 219: int nt_keyixmax; /* keyixmap size */
1.13.2.7 skrll 220:
221: void (*nt_timeout)(struct ieee80211_node_table *);
222: };
223: void ieee80211_node_table_reset(struct ieee80211_node_table *);
224:
225: struct ieee80211_node *ieee80211_alloc_node(
226: struct ieee80211_node_table *, const u_int8_t *);
1.13.2.8! christos 227: struct ieee80211_node *ieee80211_tmp_node(struct ieee80211com *,
! 228: const u_int8_t *macaddr);
1.13.2.7 skrll 229: struct ieee80211_node *ieee80211_dup_bss(struct ieee80211_node_table *,
230: const u_int8_t *);
231: #ifdef IEEE80211_DEBUG_REFCNT
232: void ieee80211_free_node_debug(struct ieee80211_node *,
233: const char *func, int line);
234: struct ieee80211_node *ieee80211_find_node_debug(
235: struct ieee80211_node_table *, const u_int8_t *,
236: const char *func, int line);
237: struct ieee80211_node * ieee80211_find_rxnode_debug(
238: struct ieee80211com *, const struct ieee80211_frame_min *,
239: const char *func, int line);
1.13.2.8! christos 240: struct ieee80211_node * ieee80211_find_rxnode_withkey_debug(
! 241: struct ieee80211com *,
! 242: const struct ieee80211_frame_min *, u_int16_t keyix,
! 243: const char *func, int line);
1.13.2.7 skrll 244: struct ieee80211_node *ieee80211_find_txnode_debug(
245: struct ieee80211com *, const u_int8_t *,
246: const char *func, int line);
247: struct ieee80211_node *ieee80211_find_node_with_channel_debug(
248: struct ieee80211_node_table *, const u_int8_t *macaddr,
249: struct ieee80211_channel *, const char *func, int line);
250: struct ieee80211_node *ieee80211_find_node_with_ssid_debug(
251: struct ieee80211_node_table *, const u_int8_t *macaddr,
252: u_int ssidlen, const u_int8_t *ssid,
253: const char *func, int line);
254: #define ieee80211_free_node(ni) \
255: ieee80211_free_node_debug(ni, __func__, __LINE__)
256: #define ieee80211_find_node(nt, mac) \
257: ieee80211_find_node_debug(nt, mac, __func__, __LINE__)
258: #define ieee80211_find_rxnode(nt, wh) \
259: ieee80211_find_rxnode_debug(nt, wh, __func__, __LINE__)
1.13.2.8! christos 260: #define ieee80211_find_rxnode_withkey(nt, wh, keyix) \
! 261: ieee80211_find_rxnode_withkey_debug(nt, wh, keyix, __func__, __LINE__)
1.13.2.7 skrll 262: #define ieee80211_find_txnode(nt, mac) \
263: ieee80211_find_txnode_debug(nt, mac, __func__, __LINE__)
264: #define ieee80211_find_node_with_channel(nt, mac, c) \
265: ieee80211_find_node_with_channel_debug(nt, mac, c, __func__, __LINE__)
266: #define ieee80211_find_node_with_ssid(nt, mac, sl, ss) \
267: ieee80211_find_node_with_ssid_debug(nt, mac, sl, ss, __func__, __LINE__)
268: #else
269: void ieee80211_free_node(struct ieee80211_node *);
270: struct ieee80211_node *ieee80211_find_node(
271: struct ieee80211_node_table *, const u_int8_t *);
272: struct ieee80211_node * ieee80211_find_rxnode(
273: struct ieee80211com *, const struct ieee80211_frame_min *);
1.13.2.8! christos 274: struct ieee80211_node * ieee80211_find_rxnode_withkey(struct ieee80211com *,
! 275: const struct ieee80211_frame_min *, u_int16_t keyix);
1.13.2.7 skrll 276: struct ieee80211_node *ieee80211_find_txnode(
277: struct ieee80211com *, const u_int8_t *);
278: struct ieee80211_node *ieee80211_find_node_with_channel(
279: struct ieee80211_node_table *, const u_int8_t *macaddr,
280: struct ieee80211_channel *);
281: struct ieee80211_node *ieee80211_find_node_with_ssid(
282: struct ieee80211_node_table *, const u_int8_t *macaddr,
283: u_int ssidlen, const u_int8_t *ssid);
284: #endif
1.13.2.8! christos 285: int ieee80211_node_delucastkey(struct ieee80211_node *);
1.13.2.2 skrll 286:
1.13.2.7 skrll 287: struct ieee80211_node *ieee80211_refine_node_for_beacon(
288: struct ieee80211com *, struct ieee80211_node *,
289: struct ieee80211_channel *, const u_int8_t *ssid);
1.13.2.2 skrll 290: typedef void ieee80211_iter_func(void *, struct ieee80211_node *);
1.13.2.7 skrll 291: void ieee80211_iterate_nodes(struct ieee80211_node_table *,
1.13.2.2 skrll 292: ieee80211_iter_func *, void *);
293:
1.13.2.7 skrll 294: void ieee80211_dump_node(struct ieee80211_node_table *,
1.13.2.2 skrll 295: struct ieee80211_node *);
1.13.2.7 skrll 296: void ieee80211_dump_nodes(struct ieee80211_node_table *);
1.13.2.2 skrll 297:
1.13.2.7 skrll 298: struct ieee80211_node *ieee80211_fakeup_adhoc_node(
299: struct ieee80211_node_table *, const u_int8_t macaddr[]);
300: void ieee80211_node_join(struct ieee80211com *, struct ieee80211_node *,int);
301: void ieee80211_node_leave(struct ieee80211com *, struct ieee80211_node *);
302: u_int8_t ieee80211_getrssi(struct ieee80211com *ic);
1.13.2.8! christos 303:
! 304: /*
! 305: * Parameters supplied when adding/updating an entry in a
! 306: * scan cache. Pointer variables should be set to NULL
! 307: * if no data is available. Pointer references can be to
! 308: * local data; any information that is saved will be copied.
! 309: * All multi-byte values must be in host byte order.
! 310: */
! 311: struct ieee80211_scanparams {
! 312: u_int16_t capinfo; /* 802.11 capabilities */
! 313: u_int16_t fhdwell; /* FHSS dwell interval */
! 314: u_int8_t chan; /* */
! 315: u_int8_t bchan;
! 316: u_int8_t fhindex;
! 317: u_int8_t erp;
! 318: u_int16_t bintval;
! 319: u_int8_t timoff;
! 320: u_int8_t *tim;
! 321: u_int8_t *tstamp;
! 322: u_int8_t *country;
! 323: u_int8_t *ssid;
! 324: u_int8_t *rates;
! 325: u_int8_t *xrates;
! 326: u_int8_t *wpa;
! 327: u_int8_t *wme;
! 328: };
! 329:
! 330: void ieee80211_add_scan(struct ieee80211com *,
! 331: const struct ieee80211_scanparams *,
! 332: const struct ieee80211_frame *,
! 333: int subtype, int rssi, int rstamp);
! 334: void ieee80211_init_neighbor(struct ieee80211com *, struct ieee80211_node *,
! 335: const struct ieee80211_frame *,
! 336: const struct ieee80211_scanparams *, int);
! 337: struct ieee80211_node *ieee80211_add_neighbor(struct ieee80211com *,
! 338: const struct ieee80211_frame *,
! 339: const struct ieee80211_scanparams *);
! 340: #endif /* !_NET80211_IEEE80211_NODE_H_ */
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