ieee80211_proto.h revision 1.16.62.1
1 /* $NetBSD: ieee80211_proto.h,v 1.16.62.1 2008/02/22 16:50:25 skrll Exp $ */ 2 /*- 3 * Copyright (c) 2001 Atsushi Onoe 4 * Copyright (c) 2002-2007 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * $FreeBSD: src/sys/net80211/ieee80211_proto.h,v 1.27 2007/11/02 05:22:25 sam Exp $ 28 */ 29 #ifndef _NET80211_IEEE80211_PROTO_H_ 30 #define _NET80211_IEEE80211_PROTO_H_ 31 32 /* 33 * 802.11 protocol implementation definitions. 34 */ 35 36 enum ieee80211_state { 37 IEEE80211_S_INIT = 0, /* default state */ 38 IEEE80211_S_SCAN = 1, /* scanning */ 39 IEEE80211_S_AUTH = 2, /* try to authenticate */ 40 IEEE80211_S_ASSOC = 3, /* try to assoc */ 41 IEEE80211_S_CAC = 4, /* doing channel availability check */ 42 IEEE80211_S_RUN = 5, /* operational (e.g. associated) */ 43 IEEE80211_S_CSA = 6, /* channel switch announce pending */ 44 IEEE80211_S_SLEEP = 7, /* power save */ 45 }; 46 #define IEEE80211_S_MAX (IEEE80211_S_SLEEP+1) 47 48 #define IEEE80211_SEND_MGMT(_ic,_ni,_type,_arg) \ 49 ((*(_ic)->ic_send_mgmt)(_ic, _ni, _type, _arg)) 50 51 /* 52 * The formation of some management frames requires guidance to 53 * deal with legacy clients. When the client is identified as 54 * "legacy 11b" this parameter can be passed in the arg param of a 55 * IEEE80211_SEND_MGMT call. 56 */ 57 #define IEEE80211_SEND_LEGACY_11B 0x1 /* legacy 11b client */ 58 #define IEEE80211_SEND_LEGACY_11 0x2 /* other legacy client */ 59 #define IEEE80211_SEND_LEGACY 0x3 /* any legacy client */ 60 61 extern const char *ieee80211_mgt_subtype_name[]; 62 extern const char *ieee80211_phymode_name[]; 63 64 void ieee80211_proto_attach(struct ieee80211com *); 65 void ieee80211_proto_detach(struct ieee80211com *); 66 67 struct ieee80211_node; 68 int ieee80211_input(struct ieee80211com *, struct mbuf *, 69 struct ieee80211_node *, int, int, uint32_t); 70 void ieee80211_deliver_data(struct ieee80211com *, 71 struct ieee80211_node *, struct mbuf *); 72 struct mbuf *ieee80211_decap1(struct mbuf *, int *); 73 int ieee80211_setup_rates(struct ieee80211_node *ni, 74 const uint8_t *rates, const uint8_t *xrates, int flags); 75 void ieee80211_saveie(uint8_t **, const uint8_t *); 76 void ieee80211_saveath(struct ieee80211_node *, uint8_t *); 77 void ieee80211_recv_mgmt(struct ieee80211com *, struct mbuf *, 78 struct ieee80211_node *, int, int, int, uint32_t); 79 int ieee80211_mgmt_output(struct ieee80211com *, struct ieee80211_node *, 80 struct mbuf *, int type); 81 struct ieee80211_bpf_params; 82 int ieee80211_raw_xmit(struct ieee80211_node *, struct mbuf *, 83 const struct ieee80211_bpf_params *); 84 int ieee80211_output(struct ifnet *, struct mbuf *, 85 const struct sockaddr *, struct rtentry *); 86 int ieee80211_send_nulldata(struct ieee80211_node *); 87 int ieee80211_send_mgmt(struct ieee80211com *, struct ieee80211_node *, 88 int, int); 89 int ieee80211_send_probereq(struct ieee80211_node *ni, 90 const uint8_t sa[IEEE80211_ADDR_LEN], 91 const uint8_t da[IEEE80211_ADDR_LEN], 92 const uint8_t bssid[IEEE80211_ADDR_LEN], 93 const uint8_t *ssid, size_t ssidlen, 94 const void *optie, size_t optielen); 95 int ieee80211_classify(struct ieee80211com *, struct mbuf *, 96 struct ieee80211_node *); 97 struct mbuf *ieee80211_encap(struct ieee80211com *, struct mbuf *, 98 struct ieee80211_node *); 99 100 void ieee80211_reset_erp(struct ieee80211com *); 101 void ieee80211_set_shortslottime(struct ieee80211com *, int onoff); 102 int ieee80211_iserp_rateset(struct ieee80211com *, 103 struct ieee80211_rateset *); 104 void ieee80211_set11gbasicrates(struct ieee80211_rateset *, 105 enum ieee80211_phymode); 106 107 /* 108 * Return the size of the 802.11 header for a management or data frame. 109 */ 110 static __inline int 111 ieee80211_hdrsize(const void *data) 112 { 113 const struct ieee80211_frame *wh = data; 114 int size = sizeof(struct ieee80211_frame); 115 116 /* NB: we don't handle control frames */ 117 IASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL, 118 ("%s: control frame", __func__)); 119 if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 120 size += IEEE80211_ADDR_LEN; 121 if (IEEE80211_QOS_HAS_SEQ(wh)) 122 size += sizeof(uint16_t); 123 return size; 124 } 125 126 /* 127 * Like ieee80211_hdrsize, but handles any type of frame. 128 */ 129 static __inline int 130 ieee80211_anyhdrsize(const void *data) 131 { 132 const struct ieee80211_frame *wh = data; 133 134 if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) { 135 switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) { 136 case IEEE80211_FC0_SUBTYPE_CTS: 137 case IEEE80211_FC0_SUBTYPE_ACK: 138 return sizeof(struct ieee80211_frame_ack); 139 case IEEE80211_FC0_SUBTYPE_BAR: 140 return sizeof(struct ieee80211_frame_bar); 141 } 142 return sizeof(struct ieee80211_frame_min); 143 } else 144 return ieee80211_hdrsize(data); 145 } 146 147 /* 148 * Template for an in-kernel authenticator. Authenticators 149 * register with the protocol code and are typically loaded 150 * as separate modules as needed. 151 */ 152 struct ieee80211_authenticator { 153 const char *ia_name; /* printable name */ 154 int (*ia_attach)(struct ieee80211com *); 155 void (*ia_detach)(struct ieee80211com *); 156 void (*ia_node_join)(struct ieee80211com *, 157 struct ieee80211_node *); 158 void (*ia_node_leave)(struct ieee80211com *, 159 struct ieee80211_node *); 160 }; 161 void ieee80211_authenticator_register(int type, 162 const struct ieee80211_authenticator *); 163 void ieee80211_authenticator_unregister(int type); 164 const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth); 165 166 struct ieee80211req; 167 /* 168 * Template for an MAC ACL policy module. Such modules 169 * register with the protocol code and are passed the sender's 170 * address of each received frame for validation. 171 */ 172 struct ieee80211_aclator { 173 const char *iac_name; /* printable name */ 174 int (*iac_attach)(struct ieee80211com *); 175 void (*iac_detach)(struct ieee80211com *); 176 int (*iac_check)(struct ieee80211com *, 177 const uint8_t mac[IEEE80211_ADDR_LEN]); 178 int (*iac_add)(struct ieee80211com *, 179 const uint8_t mac[IEEE80211_ADDR_LEN]); 180 int (*iac_remove)(struct ieee80211com *, 181 const uint8_t mac[IEEE80211_ADDR_LEN]); 182 int (*iac_flush)(struct ieee80211com *); 183 int (*iac_setpolicy)(struct ieee80211com *, int); 184 int (*iac_getpolicy)(struct ieee80211com *); 185 int (*iac_setioctl)(struct ieee80211com *, struct ieee80211req *); 186 int (*iac_getioctl)(struct ieee80211com *, struct ieee80211req *); 187 }; 188 void ieee80211_aclator_register(const struct ieee80211_aclator *); 189 void ieee80211_aclator_unregister(const struct ieee80211_aclator *); 190 const struct ieee80211_aclator *ieee80211_aclator_get(const char *name); 191 192 /* flags for ieee80211_fix_rate() */ 193 #define IEEE80211_F_DOSORT 0x00000001 /* sort rate list */ 194 #define IEEE80211_F_DOFRATE 0x00000002 /* use fixed rate */ 195 #define IEEE80211_F_DONEGO 0x00000004 /* calc negotiated rate */ 196 #define IEEE80211_F_DODEL 0x00000008 /* delete ignore rate */ 197 #define IEEE80211_F_DOBRS 0x00000010 /* check basic rate set */ 198 #define IEEE80211_F_JOIN 0x00000020 /* sta joining our bss */ 199 int ieee80211_fix_rate(struct ieee80211_node *, 200 struct ieee80211_rateset *, int); 201 202 /* 203 * WME/WMM support. 204 */ 205 struct wmeParams { 206 uint8_t wmep_acm; 207 uint8_t wmep_aifsn; 208 uint8_t wmep_logcwmin; /* log2(cwmin) */ 209 uint8_t wmep_logcwmax; /* log2(cwmax) */ 210 uint8_t wmep_txopLimit; 211 uint8_t wmep_noackPolicy; /* 0 (ack), 1 (no ack) */ 212 }; 213 #define IEEE80211_TXOP_TO_US(_txop) ((_txop)<<5) 214 #define IEEE80211_US_TO_TXOP(_us) ((_us)>>5) 215 216 struct chanAccParams { 217 uint8_t cap_info; /* version of the current set */ 218 struct wmeParams cap_wmeParams[WME_NUM_AC]; 219 }; 220 221 struct ieee80211_wme_state { 222 u_int wme_flags; 223 #define WME_F_AGGRMODE 0x00000001 /* STATUS: WME agressive mode */ 224 u_int wme_hipri_traffic; /* VI/VO frames in beacon interval */ 225 u_int wme_hipri_switch_thresh;/* agressive mode switch thresh */ 226 u_int wme_hipri_switch_hysteresis;/* agressive mode switch hysteresis */ 227 228 struct wmeParams wme_params[4]; /* from assoc resp for each AC*/ 229 struct chanAccParams wme_wmeChanParams; /* WME params applied to self */ 230 struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */ 231 struct chanAccParams wme_chanParams; /* params applied to self */ 232 struct chanAccParams wme_bssChanParams; /* params bcast to stations */ 233 234 int (*wme_update)(struct ieee80211com *); 235 }; 236 237 void ieee80211_wme_initparams(struct ieee80211com *); 238 void ieee80211_wme_updateparams(struct ieee80211com *); 239 void ieee80211_wme_updateparams_locked(struct ieee80211com *); 240 241 #define ieee80211_new_state(_ic, _nstate, _arg) \ 242 (((_ic)->ic_newstate)((_ic), (_nstate), (_arg))) 243 int ieee80211_init(struct ieee80211com *, int forcescan); 244 void ieee80211_dturbo_switch(struct ieee80211com *, int newflags); 245 void ieee80211_beacon_miss(struct ieee80211com *); 246 void ieee80211_print_essid(const uint8_t *, int); 247 void ieee80211_dump_pkt(struct ieee80211com *, 248 const uint8_t *, int, int, int); 249 250 int ieee80211_compute_duration(const struct ieee80211_frame_min *, 251 const struct ieee80211_key *, int, uint32_t, int, int, 252 struct ieee80211_duration *, struct ieee80211_duration *, int *, int); 253 254 255 extern const char *ieee80211_opmode_name[]; 256 extern const char *ieee80211_state_name[IEEE80211_S_MAX]; 257 extern const char *ieee80211_wme_acnames[]; 258 259 /* 260 * Beacon frames constructed by ieee80211_beacon_alloc 261 * have the following structure filled in so drivers 262 * can update the frame later w/ minimal overhead. 263 */ 264 struct ieee80211_beacon_offsets { 265 uint8_t bo_flags[4]; /* update/state flags */ 266 uint16_t *bo_caps; /* capabilities */ 267 uint8_t *bo_cfp; /* start of CFParms element */ 268 uint8_t *bo_tim; /* start of atim/dtim */ 269 uint8_t *bo_wme; /* start of WME parameters */ 270 uint8_t *bo_tim_trailer;/* start of fixed-size trailer */ 271 uint16_t bo_tim_len; /* atim/dtim length in bytes */ 272 uint16_t bo_tim_trailer_len;/* tim trailer length in bytes */ 273 uint8_t *bo_erp; /* start of ERP element */ 274 uint8_t *bo_htinfo; /* start of HT info element */ 275 uint8_t *bo_appie; /* start of AppIE element */ 276 uint16_t bo_appie_len; /* AppIE length in bytes */ 277 uint16_t bo_csa_trailer_len;; 278 uint8_t *bo_csa; /* start of CSA element */ 279 }; 280 struct mbuf *ieee80211_beacon_alloc(struct ieee80211_node *, 281 struct ieee80211_beacon_offsets *); 282 283 /* 284 * Beacon frame updates are signaled through calls to ic_update_beacon 285 * with one of the IEEE80211_BEACON_* tokens defined below. For devices 286 * that construct beacon frames on the host this can trigger a rebuild 287 * or defer the processing. For devices that offload beacon frame 288 * handling this callback can be used to signal a rebuild. The bo_flags 289 * array in the ieee80211_beacon_offsets structure is intended to record 290 * deferred processing requirements; ieee80211_beacon_update uses the 291 * state to optimize work. Since this structure is owned by the driver 292 * and not visible to the 802.11 layer drivers must supply an ic_update_beacon 293 * callback that marks the flag bits and schedules (as necessary) an update. 294 */ 295 enum { 296 IEEE80211_BEACON_CAPS = 0, /* capabilities */ 297 IEEE80211_BEACON_TIM = 1, /* DTIM/ATIM */ 298 IEEE80211_BEACON_WME = 2, 299 IEEE80211_BEACON_ERP = 3, /* Extended Rate Phy */ 300 IEEE80211_BEACON_HTINFO = 4, /* HT Information */ 301 IEEE80211_BEACON_APPIE = 5, /* Application IE's */ 302 IEEE80211_BEACON_CFP = 6, /* CFParms */ 303 IEEE80211_BEACON_CSA = 7, /* Channel Switch Announcement */ 304 }; 305 int ieee80211_beacon_update(struct ieee80211_node *, 306 struct ieee80211_beacon_offsets *, struct mbuf *, int mcast); 307 308 /* 309 * Notification methods called from the 802.11 state machine. 310 * Note that while these are defined here, their implementation 311 * is OS-specific. 312 */ 313 void ieee80211_notify_node_join(struct ieee80211com *, 314 struct ieee80211_node *, int newassoc); 315 void ieee80211_notify_node_leave(struct ieee80211com *, 316 struct ieee80211_node *); 317 void ieee80211_notify_scan_done(struct ieee80211com *); 318 #endif /* !_NET80211_IEEE80211_PROTO_H_ */ 319
Indexes created Thu Oct 02 14:10:14 GMT 2025