ieee80211_proto.h revision 1.1.1.2
1 /*- 2 * Copyright (c) 2001 Atsushi Onoe 3 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * Alternatively, this software may be distributed under the terms of the 18 * GNU General Public License ("GPL") version 2 as published by the Free 19 * Software Foundation. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 * $FreeBSD: src/sys/net80211/ieee80211_proto.h,v 1.11 2005/04/04 04:27:20 sam Exp $ 33 */ 34 #ifndef _NET80211_IEEE80211_PROTO_H_ 35 #define _NET80211_IEEE80211_PROTO_H_ 36 37 /* 38 * 802.11 protocol implementation definitions. 39 */ 40 41 enum ieee80211_state { 42 IEEE80211_S_INIT = 0, /* default state */ 43 IEEE80211_S_SCAN = 1, /* scanning */ 44 IEEE80211_S_AUTH = 2, /* try to authenticate */ 45 IEEE80211_S_ASSOC = 3, /* try to assoc */ 46 IEEE80211_S_RUN = 4, /* associated */ 47 }; 48 #define IEEE80211_S_MAX (IEEE80211_S_RUN+1) 49 50 #define IEEE80211_SEND_MGMT(_ic,_ni,_type,_arg) \ 51 ((*(_ic)->ic_send_mgmt)(_ic, _ni, _type, _arg)) 52 53 extern const char *ieee80211_mgt_subtype_name[]; 54 extern const char *ieee80211_phymode_name[]; 55 56 void ieee80211_proto_attach(struct ieee80211com *); 57 void ieee80211_proto_detach(struct ieee80211com *); 58 59 struct ieee80211_node; 60 int ieee80211_input(struct ieee80211com *, struct mbuf *, 61 struct ieee80211_node *, int, u_int32_t); 62 void ieee80211_recv_mgmt(struct ieee80211com *, struct mbuf *, 63 struct ieee80211_node *, int, int, u_int32_t); 64 int ieee80211_send_nulldata(struct ieee80211com *, struct ieee80211_node *); 65 int ieee80211_send_mgmt(struct ieee80211com *, struct ieee80211_node *, 66 int, int); 67 int ieee80211_classify(struct ieee80211com *, struct mbuf *, 68 struct ieee80211_node *); 69 struct mbuf *ieee80211_encap(struct ieee80211com *, struct mbuf *, 70 struct ieee80211_node *); 71 void ieee80211_pwrsave(struct ieee80211com *, struct ieee80211_node *, 72 struct mbuf *); 73 74 void ieee80211_reset_erp(struct ieee80211com *); 75 void ieee80211_set_shortslottime(struct ieee80211com *, int onoff); 76 int ieee80211_iserp_rateset(struct ieee80211com *, 77 struct ieee80211_rateset *); 78 void ieee80211_set11gbasicrates(struct ieee80211_rateset *, 79 enum ieee80211_phymode); 80 81 /* 82 * Return the size of the 802.11 header for a management or data frame. 83 */ 84 static __inline int 85 ieee80211_hdrsize(const void *data) 86 { 87 const struct ieee80211_frame *wh = data; 88 int size = sizeof(struct ieee80211_frame); 89 90 /* NB: we don't handle control frames */ 91 KASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL, 92 ("%s: control frame", __func__)); 93 if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 94 size += IEEE80211_ADDR_LEN; 95 if (IEEE80211_QOS_HAS_SEQ(wh)) 96 size += sizeof(u_int16_t); 97 return size; 98 } 99 100 /* 101 * Return the size of the 802.11 header; handles any type of frame. 102 */ 103 static __inline int 104 ieee80211_anyhdrsize(const void *data) 105 { 106 const struct ieee80211_frame *wh = data; 107 108 if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) { 109 switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) { 110 case IEEE80211_FC0_SUBTYPE_CTS: 111 case IEEE80211_FC0_SUBTYPE_ACK: 112 return sizeof(struct ieee80211_frame_ack); 113 } 114 return sizeof(struct ieee80211_frame_min); 115 } else 116 return ieee80211_hdrsize(data); 117 } 118 119 /* 120 * Template for an in-kernel authenticator. Authenticators 121 * register with the protocol code and are typically loaded 122 * as separate modules as needed. 123 */ 124 struct ieee80211_authenticator { 125 const char *ia_name; /* printable name */ 126 int (*ia_attach)(struct ieee80211com *); 127 void (*ia_detach)(struct ieee80211com *); 128 void (*ia_node_join)(struct ieee80211com *, 129 struct ieee80211_node *); 130 void (*ia_node_leave)(struct ieee80211com *, 131 struct ieee80211_node *); 132 }; 133 void ieee80211_authenticator_register(int type, 134 const struct ieee80211_authenticator *); 135 void ieee80211_authenticator_unregister(int type); 136 const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth); 137 138 /* 139 * Template for an MAC ACL policy module. Such modules 140 * register with the protocol code and are passed the sender's 141 * address of each received frame for validation. 142 */ 143 struct ieee80211_aclator { 144 const char *iac_name; /* printable name */ 145 int (*iac_attach)(struct ieee80211com *); 146 void (*iac_detach)(struct ieee80211com *); 147 int (*iac_check)(struct ieee80211com *, 148 const u_int8_t mac[IEEE80211_ADDR_LEN]); 149 int (*iac_add)(struct ieee80211com *, 150 const u_int8_t mac[IEEE80211_ADDR_LEN]); 151 int (*iac_remove)(struct ieee80211com *, 152 const u_int8_t mac[IEEE80211_ADDR_LEN]); 153 int (*iac_flush)(struct ieee80211com *); 154 int (*iac_setpolicy)(struct ieee80211com *, int); 155 int (*iac_getpolicy)(struct ieee80211com *); 156 }; 157 void ieee80211_aclator_register(const struct ieee80211_aclator *); 158 void ieee80211_aclator_unregister(const struct ieee80211_aclator *); 159 const struct ieee80211_aclator *ieee80211_aclator_get(const char *name); 160 161 /* flags for ieee80211_fix_rate() */ 162 #define IEEE80211_F_DOSORT 0x00000001 /* sort rate list */ 163 #define IEEE80211_F_DOFRATE 0x00000002 /* use fixed rate */ 164 #define IEEE80211_F_DONEGO 0x00000004 /* calc negotiated rate */ 165 #define IEEE80211_F_DODEL 0x00000008 /* delete ignore rate */ 166 int ieee80211_fix_rate(struct ieee80211com *, struct ieee80211_node *, int); 167 168 /* 169 * WME/WMM support. 170 */ 171 struct wmeParams { 172 u_int8_t wmep_acm; 173 u_int8_t wmep_aifsn; 174 u_int8_t wmep_logcwmin; /* log2(cwmin) */ 175 u_int8_t wmep_logcwmax; /* log2(cwmax) */ 176 u_int8_t wmep_txopLimit; 177 u_int8_t wmep_noackPolicy; /* 0 (ack), 1 (no ack) */ 178 }; 179 #define IEEE80211_TXOP_TO_US(_txop) ((_txop)<<5) 180 #define IEEE80211_US_TO_TXOP(_us) ((_us)>>5) 181 182 struct chanAccParams { 183 u_int8_t cap_info; /* version of the current set */ 184 struct wmeParams cap_wmeParams[WME_NUM_AC]; 185 }; 186 187 struct ieee80211_wme_state { 188 u_int wme_flags; 189 #define WME_F_AGGRMODE 0x00000001 /* STATUS: WME agressive mode */ 190 u_int wme_hipri_traffic; /* VI/VO frames in beacon interval */ 191 u_int wme_hipri_switch_thresh;/* agressive mode switch thresh */ 192 u_int wme_hipri_switch_hysteresis;/* agressive mode switch hysteresis */ 193 194 struct wmeParams wme_params[4]; /* from assoc resp for each AC*/ 195 struct chanAccParams wme_wmeChanParams; /* WME params applied to self */ 196 struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */ 197 struct chanAccParams wme_chanParams; /* params applied to self */ 198 struct chanAccParams wme_bssChanParams; /* params bcast to stations */ 199 200 int (*wme_update)(struct ieee80211com *); 201 }; 202 203 void ieee80211_wme_initparams(struct ieee80211com *); 204 void ieee80211_wme_updateparams(struct ieee80211com *); 205 void ieee80211_wme_updateparams_locked(struct ieee80211com *); 206 207 #define ieee80211_new_state(_ic, _nstate, _arg) \ 208 (((_ic)->ic_newstate)((_ic), (_nstate), (_arg))) 209 void ieee80211_print_essid(const u_int8_t *, int); 210 void ieee80211_dump_pkt(const u_int8_t *, int, int, int); 211 212 extern const char *ieee80211_state_name[IEEE80211_S_MAX]; 213 extern const char *ieee80211_wme_acnames[]; 214 215 /* 216 * Beacon frames constructed by ieee80211_beacon_alloc 217 * have the following structure filled in so drivers 218 * can update the frame later w/ minimal overhead. 219 */ 220 struct ieee80211_beacon_offsets { 221 u_int16_t *bo_caps; /* capabilities */ 222 u_int8_t *bo_tim; /* start of atim/dtim */ 223 u_int8_t *bo_wme; /* start of WME parameters */ 224 u_int8_t *bo_trailer; /* start of fixed-size trailer */ 225 u_int16_t bo_tim_len; /* atim/dtim length in bytes */ 226 u_int16_t bo_trailer_len; /* trailer length in bytes */ 227 }; 228 struct mbuf *ieee80211_beacon_alloc(struct ieee80211com *, 229 struct ieee80211_node *, struct ieee80211_beacon_offsets *); 230 int ieee80211_beacon_update(struct ieee80211com *, 231 struct ieee80211_node *, struct ieee80211_beacon_offsets *, 232 struct mbuf *, int broadcast); 233 234 /* 235 * Notification methods called from the 802.11 state machine. 236 * Note that while these are defined here, their implementation 237 * is OS-specific. 238 */ 239 void ieee80211_notify_node_join(struct ieee80211com *, 240 struct ieee80211_node *, int newassoc); 241 void ieee80211_notify_node_leave(struct ieee80211com *, 242 struct ieee80211_node *); 243 void ieee80211_notify_scan_done(struct ieee80211com *); 244 #endif /* _NET80211_IEEE80211_PROTO_H_ */ 245
Indexes created Thu Oct 02 14:10:14 GMT 2025