ieee80211_proto.h revision 1.11
1 /* $NetBSD: ieee80211_proto.h,v 1.11 2005/06/27 05:49:13 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_proto.h,v 1.9 2005/01/24 20:38:26 sam Exp $ 34 */ 35 #ifndef _NET80211_IEEE80211_PROTO_H_ 36 #define _NET80211_IEEE80211_PROTO_H_ 37 38 /* 39 * 802.11 protocol implementation definitions. 40 */ 41 42 enum ieee80211_state { 43 IEEE80211_S_INIT = 0, /* default state */ 44 IEEE80211_S_SCAN = 1, /* scanning */ 45 IEEE80211_S_AUTH = 2, /* try to authenticate */ 46 IEEE80211_S_ASSOC = 3, /* try to assoc */ 47 IEEE80211_S_RUN = 4, /* associated */ 48 }; 49 #define IEEE80211_S_MAX (IEEE80211_S_RUN+1) 50 51 #define IEEE80211_SEND_MGMT(_ic,_ni,_type,_arg) \ 52 ((*(_ic)->ic_send_mgmt)(_ic, _ni, _type, _arg)) 53 54 extern const char *ieee80211_mgt_subtype_name[]; 55 extern const char *ieee80211_phymode_name[]; 56 57 void ieee80211_proto_attach(struct ieee80211com *); 58 void ieee80211_proto_detach(struct ieee80211com *); 59 60 struct ieee80211_node; 61 int ieee80211_input(struct ieee80211com *, struct mbuf *, 62 struct ieee80211_node *, int, u_int32_t); 63 void ieee80211_recv_mgmt(struct ieee80211com *, struct mbuf *, 64 struct ieee80211_node *, int, int, u_int32_t); 65 int ieee80211_send_nulldata(struct ieee80211com *, struct ieee80211_node *); 66 int ieee80211_send_mgmt(struct ieee80211com *, struct ieee80211_node *, 67 int, int); 68 int ieee80211_classify(struct ieee80211com *, struct mbuf *, 69 struct ieee80211_node *); 70 struct mbuf *ieee80211_encap(struct ieee80211com *, struct mbuf *, 71 struct ieee80211_node *); 72 void ieee80211_pwrsave(struct ieee80211com *, struct ieee80211_node *, 73 struct mbuf *); 74 75 void ieee80211_reset_erp(struct ieee80211com *); 76 void ieee80211_set_shortslottime(struct ieee80211com *, int onoff); 77 int ieee80211_iserp_rateset(struct ieee80211com *, 78 struct ieee80211_rateset *); 79 void ieee80211_set11gbasicrates(struct ieee80211_rateset *, 80 enum ieee80211_phymode); 81 82 /* 83 * Return the size of the 802.11 header for a management or data frame. 84 */ 85 static __inline int 86 ieee80211_hdrsize(const void *data) 87 { 88 const struct ieee80211_frame *wh = data; 89 int size = sizeof(struct ieee80211_frame); 90 91 /* NB: we don't handle control frames */ 92 IASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL, 93 ("%s: control frame", __func__)); 94 if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 95 size += IEEE80211_ADDR_LEN; 96 if (IEEE80211_QOS_HAS_SEQ(wh)) 97 size += sizeof(u_int16_t); 98 return size; 99 } 100 101 /* 102 * Return the size of the 802.11 header; handles any type of frame. 103 */ 104 static __inline int 105 ieee80211_anyhdrsize(const void *data) 106 { 107 const struct ieee80211_frame *wh = data; 108 109 if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) { 110 switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) { 111 case IEEE80211_FC0_SUBTYPE_CTS: 112 case IEEE80211_FC0_SUBTYPE_ACK: 113 return sizeof(struct ieee80211_frame_ack); 114 } 115 return sizeof(struct ieee80211_frame_min); 116 } else 117 return ieee80211_hdrsize(data); 118 } 119 120 /* 121 * Template for an in-kernel authenticator. Authenticators 122 * register with the protocol code and are typically loaded 123 * as separate modules as needed. 124 */ 125 struct ieee80211_authenticator { 126 const char *ia_name; /* printable name */ 127 int (*ia_attach)(struct ieee80211com *); 128 void (*ia_detach)(struct ieee80211com *); 129 void (*ia_node_join)(struct ieee80211com *, 130 struct ieee80211_node *); 131 void (*ia_node_leave)(struct ieee80211com *, 132 struct ieee80211_node *); 133 }; 134 void ieee80211_authenticator_register(int type, 135 const struct ieee80211_authenticator *); 136 void ieee80211_authenticator_unregister(int type); 137 const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth); 138 139 /* 140 * Template for an MAC ACL policy module. Such modules 141 * register with the protocol code and are passed the sender's 142 * address of each received frame for validation. 143 */ 144 struct ieee80211_aclator { 145 const char *iac_name; /* printable name */ 146 int (*iac_attach)(struct ieee80211com *); 147 void (*iac_detach)(struct ieee80211com *); 148 int (*iac_check)(struct ieee80211com *, 149 const u_int8_t mac[IEEE80211_ADDR_LEN]); 150 int (*iac_add)(struct ieee80211com *, 151 const u_int8_t mac[IEEE80211_ADDR_LEN]); 152 int (*iac_remove)(struct ieee80211com *, 153 const u_int8_t mac[IEEE80211_ADDR_LEN]); 154 int (*iac_flush)(struct ieee80211com *); 155 int (*iac_setpolicy)(struct ieee80211com *, int); 156 int (*iac_getpolicy)(struct ieee80211com *); 157 }; 158 void ieee80211_aclator_register(const struct ieee80211_aclator *); 159 void ieee80211_aclator_unregister(const struct ieee80211_aclator *); 160 const struct ieee80211_aclator *ieee80211_aclator_get(const char *name); 161 162 /* flags for ieee80211_fix_rate() */ 163 #define IEEE80211_F_DOSORT 0x00000001 /* sort rate list */ 164 #define IEEE80211_F_DOFRATE 0x00000002 /* use fixed rate */ 165 #define IEEE80211_F_DONEGO 0x00000004 /* calc negotiated rate */ 166 #define IEEE80211_F_DODEL 0x00000008 /* delete ignore rate */ 167 int ieee80211_fix_rate(struct ieee80211com *, struct ieee80211_node *, int); 168 169 /* 170 * WME/WMM support. 171 */ 172 struct wmeParams { 173 u_int8_t wmep_acm; 174 u_int8_t wmep_aifsn; 175 u_int8_t wmep_logcwmin; /* log2(cwmin) */ 176 u_int8_t wmep_logcwmax; /* log2(cwmax) */ 177 u_int8_t wmep_txopLimit; 178 u_int8_t wmep_noackPolicy; /* 0 (ack), 1 (no ack) */ 179 }; 180 #define IEEE80211_TXOP_TO_US(_txop) ((_txop)<<5) 181 #define IEEE80211_US_TO_TXOP(_us) ((_us)>>5) 182 183 struct chanAccParams { 184 u_int8_t cap_info; /* version of the current set */ 185 struct wmeParams cap_wmeParams[WME_NUM_AC]; 186 }; 187 188 struct ieee80211_wme_state { 189 u_int wme_flags; 190 #define WME_F_AGGRMODE 0x00000001 /* STATUS: WME agressive mode */ 191 u_int wme_hipri_traffic; /* VI/VO frames in beacon interval */ 192 u_int wme_hipri_switch_thresh;/* agressive mode switch thresh */ 193 u_int wme_hipri_switch_hysteresis;/* agressive mode switch hysteresis */ 194 195 struct wmeParams wme_params[4]; /* from assoc resp for each AC*/ 196 struct chanAccParams wme_wmeChanParams; /* WME params applied to self */ 197 struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */ 198 struct chanAccParams wme_chanParams; /* params applied to self */ 199 struct chanAccParams wme_bssChanParams; /* params bcast to stations */ 200 201 int (*wme_update)(struct ieee80211com *); 202 }; 203 204 void ieee80211_wme_initparams(struct ieee80211com *); 205 void ieee80211_wme_updateparams(struct ieee80211com *); 206 void ieee80211_wme_updateparams_locked(struct ieee80211com *); 207 208 #define ieee80211_new_state(_ic, _nstate, _arg) \ 209 (((_ic)->ic_newstate)((_ic), (_nstate), (_arg))) 210 extern int ieee80211_compute_duration(struct ieee80211_frame_min *, int, 211 uint32_t, int, int, struct ieee80211_duration *, 212 struct ieee80211_duration *, int *, int); 213 void ieee80211_print_essid(const u_int8_t *, int); 214 void ieee80211_dump_pkt(const u_int8_t *, int, int, int); 215 216 extern const char *ieee80211_state_name[IEEE80211_S_MAX]; 217 extern const char *ieee80211_wme_acnames[]; 218 219 /* 220 * Beacon frames constructed by ieee80211_beacon_alloc 221 * have the following structure filled in so drivers 222 * can update the frame later w/ minimal overhead. 223 */ 224 struct ieee80211_beacon_offsets { 225 u_int16_t *bo_caps; /* capabilities */ 226 u_int8_t *bo_tim; /* start of atim/dtim */ 227 u_int8_t *bo_wme; /* start of WME parameters */ 228 u_int8_t *bo_trailer; /* start of fixed-size trailer */ 229 u_int16_t bo_tim_len; /* atim/dtim length in bytes */ 230 u_int16_t bo_trailer_len; /* trailer length in bytes */ 231 }; 232 struct mbuf *ieee80211_beacon_alloc(struct ieee80211com *, 233 struct ieee80211_node *, struct ieee80211_beacon_offsets *); 234 int ieee80211_beacon_update(struct ieee80211com *, 235 struct ieee80211_node *, struct ieee80211_beacon_offsets *, 236 struct mbuf *, int broadcast); 237 238 /* 239 * Notification methods called from the 802.11 state machine. 240 * Note that while these are defined here, their implementation 241 * is OS-specific. 242 */ 243 void ieee80211_notify_node_join(struct ieee80211com *, 244 struct ieee80211_node *, int newassoc); 245 void ieee80211_notify_node_leave(struct ieee80211com *, 246 struct ieee80211_node *); 247 void ieee80211_notify_scan_done(struct ieee80211com *); 248 #endif /* _NET80211_IEEE80211_PROTO_H_ */ 249
Indexes created Sun Sep 28 16:09:52 GMT 2025