ieee80211_node.h revision 1.11
1 /* $NetBSD: ieee80211_node.h,v 1.11 2004/07/23 09:22:15 mycroft Exp $ */ 2 /*- 3 * Copyright (c) 2001 Atsushi Onoe 4 * Copyright (c) 2002, 2003 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 1.10 2004/04/05 22:10:26 sam Exp $ 34 */ 35 #ifndef _NET80211_IEEE80211_NODE_H_ 36 #define _NET80211_IEEE80211_NODE_H_ 37 38 #ifdef _KERNEL 39 #define IEEE80211_PSCAN_WAIT 5 /* passive scan wait */ 40 #define IEEE80211_TRANS_WAIT 5 /* transition wait */ 41 #define IEEE80211_INACT_WAIT 5 /* inactivity timer interval */ 42 #define IEEE80211_INACT_MAX (300/IEEE80211_INACT_WAIT) 43 44 #define IEEE80211_NODE_HASHSIZE 32 45 /* simple hash is enough for variation of macaddr */ 46 #define IEEE80211_NODE_HASH(addr) \ 47 (((u_int8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % IEEE80211_NODE_HASHSIZE) 48 #endif /* _KERNEL */ 49 50 #define IEEE80211_RATE_SIZE 8 /* 802.11 standard */ 51 #define IEEE80211_RATE_MAXSIZE 15 /* max rates we'll handle */ 52 53 struct ieee80211_rateset { 54 u_int8_t rs_nrates; 55 u_int8_t rs_rates[IEEE80211_RATE_MAXSIZE]; 56 }; 57 58 #ifdef _KERNEL 59 /* 60 * Node specific information. Note that drivers are expected 61 * to derive from this structure to add device-specific per-node 62 * state. This is done by overriding the ic_node_* methods in 63 * the ieee80211com structure. 64 */ 65 struct ieee80211_node { 66 TAILQ_ENTRY(ieee80211_node) ni_list; 67 LIST_ENTRY(ieee80211_node) ni_hash; 68 u_int ni_refcnt; 69 u_int ni_scangen; /* gen# for timeout scan */ 70 71 /* hardware */ 72 u_int32_t ni_rstamp; /* recv timestamp */ 73 u_int8_t ni_rssi; /* recv ssi */ 74 75 /* header */ 76 u_int8_t ni_macaddr[IEEE80211_ADDR_LEN]; 77 u_int8_t ni_bssid[IEEE80211_ADDR_LEN]; 78 79 /* beacon, probe response */ 80 u_int8_t ni_tstamp[8]; /* from last rcv'd beacon */ 81 u_int16_t ni_intval; /* beacon interval */ 82 u_int16_t ni_capinfo; /* capabilities */ 83 u_int8_t ni_esslen; 84 u_int8_t ni_essid[IEEE80211_NWID_LEN]; 85 struct ieee80211_rateset ni_rates; /* negotiated rate set */ 86 u_int8_t *ni_country; /* country information XXX */ 87 struct ieee80211_channel *ni_chan; 88 u_int16_t ni_fhdwell; /* FH only */ 89 u_int8_t ni_fhindex; /* FH only */ 90 u_int8_t ni_erp; /* 11g only */ 91 92 #ifdef notyet 93 /* DTIM and contention free period (CFP) */ 94 u_int8_t ni_dtimperiod; 95 u_int8_t ni_cfpperiod; /* # of DTIMs between CFPs */ 96 u_int16_t ni_cfpduremain; /* remaining cfp duration */ 97 u_int16_t ni_cfpmaxduration;/* max CFP duration in TU */ 98 u_int16_t ni_nextdtim; /* time to next DTIM */ 99 u_int16_t ni_timoffset; 100 #endif 101 102 /* power saving mode */ 103 104 u_int8_t ni_pwrsave; 105 struct ifqueue ni_savedq; /* packets queued for pspoll */ 106 107 /* others */ 108 u_int16_t ni_associd; /* assoc response */ 109 u_int16_t ni_txseq; /* seq to be transmitted */ 110 u_int16_t ni_rxseq; /* seq previous received */ 111 int ni_fails; /* failure count to associate */ 112 int ni_inact; /* inactivity mark count */ 113 int ni_txrate; /* index to ni_rates[] */ 114 u_int32_t *ni_challenge; /* shared-key challenge */ 115 }; 116 117 #ifdef __NetBSD__ 118 #define ieee80211_node_incref(ni) \ 119 do { \ 120 int _s = splnet(); \ 121 (ni)->ni_refcnt++; \ 122 splx(_s); \ 123 } while (0) 124 125 static __inline int 126 ieee80211_node_decref(struct ieee80211_node *ni) 127 { 128 int refcnt, s; 129 s = splnet(); 130 refcnt = --ni->ni_refcnt; 131 splx(s); 132 return refcnt; 133 } 134 135 #else 136 #define ieee80211_node_incref(ni) atomic_add_int(&(ni)->ni_refcnt, 1) 137 static __inline int 138 ieee80211_node_decref(struct ieee80211_node *ni) 139 { 140 int orefcnt; 141 do { 142 orefcnt = ni->ni_refcnt; 143 } while (atomic_cmpset_int(&ni->ni_refcnt, orefcnt, orefcnt - 1) == 0); 144 return orefcnt - 1; 145 } 146 #endif 147 148 static __inline struct ieee80211_node * 149 ieee80211_ref_node(struct ieee80211_node *ni) 150 { 151 ieee80211_node_incref(ni); 152 return ni; 153 } 154 155 static __inline void 156 ieee80211_unref_node(struct ieee80211_node **ni) 157 { 158 ieee80211_node_decref(*ni); 159 *ni = NULL; /* guard against use */ 160 } 161 162 #define IEEE80211_NODE_LOCK_INIT(_ic, _name) \ 163 mtx_init(&(_ic)->ic_nodelock, _name, "802.11 node table", MTX_DEF) 164 #define IEEE80211_NODE_LOCK_DESTROY(_ic) mtx_destroy(&(_ic)->ic_nodelock) 165 #define IEEE80211_NODE_LOCK(_ic) mtx_lock(&(_ic)->ic_nodelock) 166 #define IEEE80211_NODE_UNLOCK(_ic) mtx_unlock(&(_ic)->ic_nodelock) 167 #define IEEE80211_NODE_LOCK_ASSERT(_ic) \ 168 mtx_assert(&(_ic)->ic_nodelock, MA_OWNED) 169 170 struct ieee80211com; 171 172 #ifdef MALLOC_DECLARE 173 MALLOC_DECLARE(M_80211_NODE); 174 #endif 175 176 extern void ieee80211_node_attach(struct ifnet *); 177 extern void ieee80211_node_lateattach(struct ifnet *); 178 extern void ieee80211_node_detach(struct ifnet *); 179 180 extern void ieee80211_begin_scan(struct ifnet *); 181 extern void ieee80211_next_scan(struct ifnet *); 182 extern void ieee80211_create_ibss(struct ieee80211com* , 183 struct ieee80211_channel *); 184 extern void ieee80211_end_scan(struct ifnet *); 185 extern struct ieee80211_node *ieee80211_alloc_node(struct ieee80211com *, 186 u_int8_t *); 187 extern struct ieee80211_node *ieee80211_dup_bss(struct ieee80211com *, 188 u_int8_t *); 189 extern struct ieee80211_node *ieee80211_find_node(struct ieee80211com *, 190 u_int8_t *); 191 extern struct ieee80211_node *ieee80211_find_rxnode(struct ieee80211com *, 192 struct ieee80211_frame *); 193 extern struct ieee80211_node *ieee80211_find_txnode(struct ieee80211com *, 194 u_int8_t *); 195 extern struct ieee80211_node * ieee80211_lookup_node(struct ieee80211com *, 196 u_int8_t *macaddr, struct ieee80211_channel *); 197 extern void ieee80211_free_node(struct ieee80211com *, 198 struct ieee80211_node *); 199 extern void ieee80211_free_allnodes(struct ieee80211com *); 200 201 typedef void ieee80211_iter_func(void *, struct ieee80211_node *); 202 extern void ieee80211_iterate_nodes(struct ieee80211com *ic, 203 ieee80211_iter_func *, void *); 204 extern void ieee80211_timeout_nodes(struct ieee80211com *); 205 206 extern void ieee80211_node_join(struct ieee80211com *, 207 struct ieee80211_node *, int); 208 extern void ieee80211_node_leave(struct ieee80211com *, 209 struct ieee80211_node *); 210 211 extern int ieee80211_match_bss(struct ieee80211com *, struct ieee80211_node *); 212 #endif /* _KERNEL */ 213 #endif /* _NET80211_IEEE80211_NODE_H_ */ 214
Indexes created Sun Sep 21 20:09:37 GMT 2025