ieee80211_node.h revision 1.23
1 /* $NetBSD: ieee80211_node.h,v 1.23 2007/12/22 00:51:07 dyoung Exp $ */ 2 /*- 3 * Copyright (c) 2001 Atsushi Onoe 4 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting 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 * 33 * $FreeBSD: src/sys/net80211/ieee80211_node.h,v 1.22 2005/08/10 16:22:29 sam Exp $ 34 */ 35 #ifndef _NET80211_IEEE80211_NODE_H_ 36 #define _NET80211_IEEE80211_NODE_H_ 37 38 #include <net80211/ieee80211_netbsd.h> 39 #include <net80211/ieee80211_ioctl.h> /* for ieee80211_nodestats */ 40 41 #ifdef _KERNEL 42 /* 43 * Each ieee80211com instance has a single timer that fires once a 44 * second. This is used to initiate various work depending on the 45 * state of the instance: scanning (passive or active), ``transition'' 46 * (waiting for a response to a management frame when operating 47 * as a station), and node inactivity processing (when operating 48 * as an AP). For inactivity processing each node has a timeout 49 * set in it's ni_inact field that is decremented on each timeout 50 * and the node is reclaimed when the counter goes to zero. We 51 * use different inactivity timeout values depending on whether 52 * the node is associated and authorized (either by 802.1x or 53 * open/shared key authentication) or associated but yet to be 54 * authorized. The latter timeout is shorter to more aggressively 55 * reclaim nodes that leave part way through the 802.1x exchange. 56 */ 57 #define IEEE80211_INACT_WAIT 15 /* inactivity interval (secs) */ 58 #define IEEE80211_INACT_INIT (30/IEEE80211_INACT_WAIT) /* initial */ 59 #define IEEE80211_INACT_AUTH (180/IEEE80211_INACT_WAIT) /* associated but not authorized */ 60 #define IEEE80211_INACT_RUN (300/IEEE80211_INACT_WAIT) /* authorized */ 61 #define IEEE80211_INACT_PROBE (30/IEEE80211_INACT_WAIT) /* probe */ 62 #define IEEE80211_INACT_SCAN (300/IEEE80211_INACT_WAIT) /* scanned */ 63 64 #define IEEE80211_TRANS_WAIT 5 /* mgt frame tx timer (secs) */ 65 66 #define IEEE80211_NODE_HASHSIZE 32 67 /* simple hash is enough for variation of macaddr */ 68 #define IEEE80211_NODE_HASH(addr) \ 69 (((const u_int8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % \ 70 IEEE80211_NODE_HASHSIZE) 71 72 struct ieee80211_rsnparms { 73 u_int8_t rsn_mcastcipher; /* mcast/group cipher */ 74 u_int8_t rsn_mcastkeylen; /* mcast key length */ 75 u_int8_t rsn_ucastcipherset; /* unicast cipher set */ 76 u_int8_t rsn_ucastcipher; /* selected unicast cipher */ 77 u_int8_t rsn_ucastkeylen; /* unicast key length */ 78 u_int8_t rsn_keymgmtset; /* key mangement algorithms */ 79 u_int8_t rsn_keymgmt; /* selected key mgmt algo */ 80 u_int16_t rsn_caps; /* capabilities */ 81 }; 82 83 struct ieee80211_node_table; 84 struct ieee80211com; 85 86 /* 87 * Node specific information. Note that drivers are expected 88 * to derive from this structure to add device-specific per-node 89 * state. This is done by overriding the ic_node_* methods in 90 * the ieee80211com structure. 91 */ 92 struct ieee80211_node { 93 struct ieee80211com *ni_ic; 94 struct ieee80211_node_table *ni_table; 95 TAILQ_ENTRY(ieee80211_node) ni_list; 96 LIST_ENTRY(ieee80211_node) ni_hash; 97 u_int ni_refcnt; 98 u_int ni_scangen; /* gen# for timeout scan */ 99 u_int8_t ni_authmode; /* authentication algorithm */ 100 u_int16_t ni_flags; /* special-purpose state */ 101 #define IEEE80211_NODE_AUTH 0x0001 /* authorized for data */ 102 #define IEEE80211_NODE_QOS 0x0002 /* QoS enabled */ 103 #define IEEE80211_NODE_ERP 0x0004 /* ERP enabled */ 104 /* NB: this must have the same value as IEEE80211_FC1_PWR_MGT */ 105 #define IEEE80211_NODE_PWR_MGT 0x0010 /* power save mode enabled */ 106 #define IEEE80211_NODE_AREF 0x0020 /* authentication ref held */ 107 u_int16_t ni_associd; /* assoc response */ 108 u_int16_t ni_txpower; /* current transmit power */ 109 u_int16_t ni_vlan; /* vlan tag */ 110 u_int32_t *ni_challenge; /* shared-key challenge */ 111 u_int8_t *ni_wpa_ie; /* captured WPA/RSN ie */ 112 u_int8_t *ni_wme_ie; /* captured WME ie */ 113 u_int16_t ni_txseqs[17]; /* tx seq per-tid */ 114 u_int16_t ni_rxseqs[17]; /* rx seq previous per-tid*/ 115 u_int32_t ni_rxfragstamp; /* time stamp of last rx frag */ 116 struct mbuf *ni_rxfrag[3]; /* rx frag reassembly */ 117 struct ieee80211_rsnparms ni_rsn; /* RSN/WPA parameters */ 118 struct ieee80211_key ni_ucastkey; /* unicast key */ 119 120 /* hardware */ 121 u_int32_t ni_rstamp; /* recv timestamp */ 122 u_int8_t ni_rssi; /* recv ssi */ 123 124 /* header */ 125 u_int8_t ni_macaddr[IEEE80211_ADDR_LEN]; 126 u_int8_t ni_bssid[IEEE80211_ADDR_LEN]; 127 128 /* beacon, probe response */ 129 union { 130 u_int8_t data[8]; 131 u_int64_t tsf; 132 } ni_tstamp; /* from last rcv'd beacon */ 133 u_int16_t ni_intval; /* beacon interval */ 134 u_int16_t ni_capinfo; /* capabilities */ 135 u_int8_t ni_esslen; 136 u_int8_t ni_essid[IEEE80211_NWID_LEN]; 137 struct ieee80211_rateset ni_rates; /* negotiated rate set */ 138 struct ieee80211_channel *ni_chan; /* XXX multiple uses */ 139 u_int16_t ni_fhdwell; /* FH only */ 140 u_int8_t ni_fhindex; /* FH only */ 141 u_int8_t ni_erp; /* ERP from beacon/probe resp */ 142 u_int16_t ni_timoff; /* byte offset to TIM ie */ 143 u_int8_t ni_dtim_period; /* DTIM period */ 144 u_int8_t ni_dtim_count; /* DTIM count for last bcn */ 145 146 /* others */ 147 int ni_fails; /* failure count to associate */ 148 short ni_inact; /* inactivity mark count */ 149 short ni_inact_reload;/* inactivity reload value */ 150 int ni_txrate; /* index to ni_rates[] */ 151 struct ifqueue ni_savedq; /* ps-poll queue */ 152 struct ieee80211_nodestats ni_stats; /* per-node statistics */ 153 }; 154 MALLOC_DECLARE(M_80211_NODE); 155 156 #define IEEE80211_NODE_AID(ni) IEEE80211_AID(ni->ni_associd) 157 158 #define IEEE80211_NODE_STAT(ni,stat) (ni->ni_stats.ns_##stat++) 159 #define IEEE80211_NODE_STAT_ADD(ni,stat,v) (ni->ni_stats.ns_##stat += v) 160 #define IEEE80211_NODE_STAT_SET(ni,stat,v) (ni->ni_stats.ns_##stat = v) 161 162 static __inline struct ieee80211_node * 163 ieee80211_ref_node(struct ieee80211_node *ni) 164 { 165 ieee80211_node_incref(ni); 166 return ni; 167 } 168 169 static __inline void 170 ieee80211_unref_node(struct ieee80211_node **ni) 171 { 172 ieee80211_node_decref(*ni); 173 *ni = NULL; /* guard against use */ 174 } 175 176 struct ieee80211com; 177 178 void ieee80211_node_attach(struct ieee80211com *); 179 void ieee80211_node_lateattach(struct ieee80211com *); 180 void ieee80211_node_detach(struct ieee80211com *); 181 182 static __inline int 183 ieee80211_node_is_authorized(const struct ieee80211_node *ni) 184 { 185 return (ni->ni_flags & IEEE80211_NODE_AUTH); 186 } 187 188 void ieee80211_node_authorize(struct ieee80211_node *); 189 void ieee80211_node_unauthorize(struct ieee80211_node *); 190 191 void ieee80211_begin_scan(struct ieee80211com *, int); 192 int ieee80211_next_scan(struct ieee80211com *); 193 void ieee80211_probe_curchan(struct ieee80211com *, int); 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 *); 198 int ieee80211_ibss_merge(struct ieee80211_node *); 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 */ 218 struct ieee80211_node **nt_keyixmap; /* key ix -> node map */ 219 int nt_keyixmax; /* keyixmap size */ 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 *); 227 struct ieee80211_node *ieee80211_tmp_node(struct ieee80211com *, 228 const u_int8_t *macaddr); 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); 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); 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__) 260 #define ieee80211_find_rxnode_withkey(nt, wh, keyix) \ 261 ieee80211_find_rxnode_withkey_debug(nt, wh, keyix, __func__, __LINE__) 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 *); 274 struct ieee80211_node * ieee80211_find_rxnode_withkey(struct ieee80211com *, 275 const struct ieee80211_frame_min *, u_int16_t keyix); 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 285 int ieee80211_node_delucastkey(struct ieee80211_node *); 286 287 struct ieee80211_node *ieee80211_refine_node_for_beacon( 288 struct ieee80211com *, struct ieee80211_node *, 289 struct ieee80211_channel *, const u_int8_t *ssid); 290 typedef void ieee80211_iter_func(void *, struct ieee80211_node *); 291 void ieee80211_iterate_nodes(struct ieee80211_node_table *, 292 ieee80211_iter_func *, void *); 293 294 void ieee80211_dump_node(struct ieee80211_node_table *, 295 struct ieee80211_node *); 296 void ieee80211_dump_nodes(struct ieee80211_node_table *); 297 298 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); 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 /* _KERNEL */ 341 #endif /* !_NET80211_IEEE80211_NODE_H_ */ 342
Indexes created Tue Sep 23 23:09:58 GMT 2025