ieee80211_proto.h revision 1.21
1 /* $NetBSD: ieee80211_proto.h,v 1.21 2013/03/30 01:06:37 christos 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 1.16 2005/08/13 17:31:48 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 ((int)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 int ieee80211_setup_rates(struct ieee80211_node *ni, 64 const u_int8_t *rates, const u_int8_t *xrates, int flags); 65 void ieee80211_saveie(u_int8_t **, const u_int8_t *); 66 void ieee80211_recv_mgmt(struct ieee80211com *, struct mbuf *, 67 struct ieee80211_node *, int, int, u_int32_t); 68 int ieee80211_send_nulldata(struct ieee80211_node *); 69 int ieee80211_send_probereq(struct ieee80211_node *ni, 70 const u_int8_t sa[IEEE80211_ADDR_LEN], 71 const u_int8_t da[IEEE80211_ADDR_LEN], 72 const u_int8_t bssid[IEEE80211_ADDR_LEN], 73 const u_int8_t *ssid, size_t ssidlen, 74 const void *optie, size_t optielen); 75 int ieee80211_send_mgmt(struct ieee80211com *, struct ieee80211_node *, 76 int, int); 77 int ieee80211_classify(struct ieee80211com *, struct mbuf *, 78 struct ieee80211_node *); 79 struct mbuf *ieee80211_encap(struct ieee80211com *, struct mbuf *, 80 struct ieee80211_node *); 81 struct mbuf *ieee80211_get_rts(struct ieee80211com *, 82 const struct ieee80211_frame *, uint16_t); 83 struct mbuf *ieee80211_get_cts_to_self(struct ieee80211com *, 84 uint16_t); 85 void ieee80211_pwrsave(struct ieee80211com *, struct ieee80211_node *, 86 struct mbuf *); 87 88 void ieee80211_reset_erp(struct ieee80211com *); 89 void ieee80211_set_shortslottime(struct ieee80211com *, int onoff); 90 int ieee80211_iserp_rateset(struct ieee80211com *, 91 struct ieee80211_rateset *); 92 void ieee80211_set11gbasicrates(struct ieee80211_rateset *, 93 enum ieee80211_phymode); 94 95 /* 96 * Return the size of the 802.11 header for a management or data frame. 97 */ 98 static __inline int 99 ieee80211_hdrsize(const void *data) 100 { 101 const struct ieee80211_frame *wh = data; 102 int size = sizeof(struct ieee80211_frame); 103 104 /* NB: we don't handle control frames */ 105 IASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL, 106 ("%s: control frame", __func__)); 107 if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 108 size += IEEE80211_ADDR_LEN; 109 if (IEEE80211_QOS_HAS_SEQ(wh)) 110 size += sizeof(u_int16_t); 111 return size; 112 } 113 114 /* 115 * Return the size of the 802.11 header; handles any type of frame. 116 */ 117 static __inline int 118 ieee80211_anyhdrsize(const void *data) 119 { 120 const struct ieee80211_frame *wh = data; 121 122 if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) { 123 switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) { 124 case IEEE80211_FC0_SUBTYPE_CTS: 125 case IEEE80211_FC0_SUBTYPE_ACK: 126 return sizeof(struct ieee80211_frame_ack); 127 } 128 return sizeof(struct ieee80211_frame_min); 129 } else 130 return ieee80211_hdrsize(data); 131 } 132 133 /* 134 * Template for an in-kernel authenticator. Authenticators 135 * register with the protocol code and are typically loaded 136 * as separate modules as needed. 137 */ 138 struct ieee80211_authenticator { 139 const char *ia_name; /* printable name */ 140 int (*ia_attach)(struct ieee80211com *); 141 void (*ia_detach)(struct ieee80211com *); 142 void (*ia_node_join)(struct ieee80211com *, 143 struct ieee80211_node *); 144 void (*ia_node_leave)(struct ieee80211com *, 145 struct ieee80211_node *); 146 }; 147 void ieee80211_authenticator_register(int type, 148 const struct ieee80211_authenticator *); 149 void ieee80211_authenticator_unregister(int type); 150 const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth); 151 152 struct ieee80211req; 153 /* 154 * Template for an MAC ACL policy module. Such modules 155 * register with the protocol code and are passed the sender's 156 * address of each received frame for validation. 157 */ 158 struct ieee80211_aclator { 159 const char *iac_name; /* printable name */ 160 int (*iac_attach)(struct ieee80211com *); 161 void (*iac_detach)(struct ieee80211com *); 162 int (*iac_check)(struct ieee80211com *, 163 const u_int8_t mac[IEEE80211_ADDR_LEN]); 164 int (*iac_add)(struct ieee80211com *, 165 const u_int8_t mac[IEEE80211_ADDR_LEN]); 166 int (*iac_remove)(struct ieee80211com *, 167 const u_int8_t mac[IEEE80211_ADDR_LEN]); 168 int (*iac_flush)(struct ieee80211com *); 169 int (*iac_setpolicy)(struct ieee80211com *, int); 170 int (*iac_getpolicy)(struct ieee80211com *); 171 int (*iac_setioctl)(struct ieee80211com *, struct ieee80211req *); 172 int (*iac_getioctl)(struct ieee80211com *, struct ieee80211req *); 173 }; 174 void ieee80211_aclator_register(const struct ieee80211_aclator *); 175 void ieee80211_aclator_unregister(const struct ieee80211_aclator *); 176 const struct ieee80211_aclator *ieee80211_aclator_get(const char *name); 177 178 /* flags for ieee80211_fix_rate() */ 179 #define IEEE80211_R_DOSORT 0x00000001 /* sort rate list */ 180 #define IEEE80211_R_DOFRATE 0x00000002 /* use fixed rate */ 181 #define IEEE80211_R_DONEGO 0x00000004 /* calc negotiated rate */ 182 #define IEEE80211_R_DODEL 0x00000008 /* delete ignore rate */ 183 int ieee80211_fix_rate(struct ieee80211_node *, int); 184 185 /* 186 * WME/WMM support. 187 */ 188 struct wmeParams { 189 u_int8_t wmep_acm; 190 u_int8_t wmep_aifsn; 191 u_int8_t wmep_logcwmin; /* log2(cwmin) */ 192 u_int8_t wmep_logcwmax; /* log2(cwmax) */ 193 u_int8_t wmep_txopLimit; 194 u_int8_t wmep_noackPolicy; /* 0 (ack), 1 (no ack) */ 195 }; 196 #define IEEE80211_TXOP_TO_US(_txop) ((_txop)<<5) 197 #define IEEE80211_US_TO_TXOP(_us) ((_us)>>5) 198 199 struct chanAccParams { 200 u_int8_t cap_info; /* version of the current set */ 201 struct wmeParams cap_wmeParams[WME_NUM_AC]; 202 }; 203 204 struct ieee80211_wme_state { 205 u_int wme_flags; 206 #define WME_F_AGGRMODE 0x00000001 /* STATUS: WME agressive mode */ 207 u_int wme_hipri_traffic; /* VI/VO frames in beacon interval */ 208 u_int wme_hipri_switch_thresh;/* agressive mode switch thresh */ 209 u_int wme_hipri_switch_hysteresis;/* agressive mode switch hysteresis */ 210 211 struct wmeParams wme_params[4]; /* from assoc resp for each AC*/ 212 struct chanAccParams wme_wmeChanParams; /* WME params applied to self */ 213 struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */ 214 struct chanAccParams wme_chanParams; /* params applied to self */ 215 struct chanAccParams wme_bssChanParams; /* params bcast to stations */ 216 217 int (*wme_update)(struct ieee80211com *); 218 }; 219 220 void ieee80211_wme_initparams(struct ieee80211com *); 221 void ieee80211_wme_updateparams(struct ieee80211com *); 222 void ieee80211_wme_updateparams_locked(struct ieee80211com *); 223 224 #define ieee80211_new_state(_ic, _nstate, _arg) \ 225 (((_ic)->ic_newstate)((_ic), (_nstate), (_arg))) 226 int ieee80211_compute_duration(const struct ieee80211_frame_min *, 227 const struct ieee80211_key *, int, 228 uint32_t, int, int, struct ieee80211_duration *, 229 struct ieee80211_duration *, int *, int); 230 void ieee80211_beacon_miss(struct ieee80211com *); 231 void ieee80211_print_essid(const u_int8_t *, int); 232 void ieee80211_dump_pkt(const u_int8_t *, int, int, int); 233 234 extern const char *ieee80211_state_name[IEEE80211_S_MAX]; 235 extern const char *ieee80211_wme_acnames[]; 236 237 /* 238 * Beacon frames constructed by ieee80211_beacon_alloc 239 * have the following structure filled in so drivers 240 * can update the frame later w/ minimal overhead. 241 */ 242 struct ieee80211_beacon_offsets { 243 u_int16_t *bo_caps; /* capabilities */ 244 u_int8_t *bo_tim; /* start of atim/dtim */ 245 u_int8_t *bo_wme; /* start of WME parameters */ 246 u_int8_t *bo_trailer; /* start of fixed-size trailer */ 247 u_int16_t bo_tim_len; /* atim/dtim length in bytes */ 248 u_int16_t bo_trailer_len; /* trailer length in bytes */ 249 }; 250 struct mbuf *ieee80211_beacon_alloc(struct ieee80211com *, 251 struct ieee80211_node *, struct ieee80211_beacon_offsets *); 252 int ieee80211_beacon_update(struct ieee80211com *, 253 struct ieee80211_node *, struct ieee80211_beacon_offsets *, 254 struct mbuf *, int broadcast); 255 256 /* 257 * Notification methods called from the 802.11 state machine. 258 * Note that while these are defined here, their implementation 259 * is OS-specific. 260 */ 261 void ieee80211_notify_node_join(struct ieee80211com *, 262 struct ieee80211_node *, int newassoc); 263 void ieee80211_notify_node_leave(struct ieee80211com *, 264 struct ieee80211_node *); 265 void ieee80211_notify_scan_done(struct ieee80211com *); 266 267 #endif /* !_NET80211_IEEE80211_PROTO_H_ */ 268
Indexes created Fri Sep 26 08:10:20 GMT 2025