JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1 | /* @(#) $Header: /tcpdump/master/tcpdump/ieee802_11.h,v 1.12 2007-07-22 19:59:06 guy Exp $ (LBL) */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (c) 2001 |
| 4 | * Fortress Technologies |
| 5 | * Charlie Lenahan ( clenahan@fortresstech.com ) |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that: (1) source code distributions |
| 9 | * retain the above copyright notice and this paragraph in its entirety, (2) |
| 10 | * distributions including binary code include the above copyright notice and |
| 11 | * this paragraph in its entirety in the documentation or other materials |
| 12 | * provided with the distribution, and (3) all advertising materials mentioning |
| 13 | * features or use of this software display the following acknowledgement: |
| 14 | * ``This product includes software developed by the University of California, |
| 15 | * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| 16 | * the University nor the names of its contributors may be used to endorse |
| 17 | * or promote products derived from this software without specific prior |
| 18 | * written permission. |
| 19 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| 20 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| 21 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 22 | */ |
| 23 | |
| 24 | /* Lengths of 802.11 header components. */ |
| 25 | #define IEEE802_11_FC_LEN 2 |
| 26 | #define IEEE802_11_DUR_LEN 2 |
| 27 | #define IEEE802_11_DA_LEN 6 |
| 28 | #define IEEE802_11_SA_LEN 6 |
| 29 | #define IEEE802_11_BSSID_LEN 6 |
| 30 | #define IEEE802_11_RA_LEN 6 |
| 31 | #define IEEE802_11_TA_LEN 6 |
| 32 | #define IEEE802_11_SEQ_LEN 2 |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 33 | #define IEEE802_11_CTL_LEN 2 |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 34 | #define IEEE802_11_IV_LEN 3 |
| 35 | #define IEEE802_11_KID_LEN 1 |
| 36 | |
| 37 | /* Frame check sequence length. */ |
| 38 | #define IEEE802_11_FCS_LEN 4 |
| 39 | |
| 40 | /* Lengths of beacon components. */ |
| 41 | #define IEEE802_11_TSTAMP_LEN 8 |
| 42 | #define IEEE802_11_BCNINT_LEN 2 |
| 43 | #define IEEE802_11_CAPINFO_LEN 2 |
| 44 | #define IEEE802_11_LISTENINT_LEN 2 |
| 45 | |
| 46 | #define IEEE802_11_AID_LEN 2 |
| 47 | #define IEEE802_11_STATUS_LEN 2 |
| 48 | #define IEEE802_11_REASON_LEN 2 |
| 49 | |
| 50 | /* Length of previous AP in reassocation frame */ |
| 51 | #define IEEE802_11_AP_LEN 6 |
| 52 | |
| 53 | #define T_MGMT 0x0 /* management */ |
| 54 | #define T_CTRL 0x1 /* control */ |
| 55 | #define T_DATA 0x2 /* data */ |
| 56 | #define T_RESV 0x3 /* reserved */ |
| 57 | |
| 58 | #define ST_ASSOC_REQUEST 0x0 |
| 59 | #define ST_ASSOC_RESPONSE 0x1 |
| 60 | #define ST_REASSOC_REQUEST 0x2 |
| 61 | #define ST_REASSOC_RESPONSE 0x3 |
| 62 | #define ST_PROBE_REQUEST 0x4 |
| 63 | #define ST_PROBE_RESPONSE 0x5 |
| 64 | /* RESERVED 0x6 */ |
| 65 | /* RESERVED 0x7 */ |
| 66 | #define ST_BEACON 0x8 |
| 67 | #define ST_ATIM 0x9 |
| 68 | #define ST_DISASSOC 0xA |
| 69 | #define ST_AUTH 0xB |
| 70 | #define ST_DEAUTH 0xC |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 71 | #define ST_ACTION 0xD |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 72 | /* RESERVED 0xE */ |
| 73 | /* RESERVED 0xF */ |
| 74 | |
| 75 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 76 | #define CTRL_CONTROL_WRAPPER 0x7 |
| 77 | #define CTRL_BAR 0x8 |
| 78 | #define CTRL_BA 0x9 |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 79 | #define CTRL_PS_POLL 0xA |
| 80 | #define CTRL_RTS 0xB |
| 81 | #define CTRL_CTS 0xC |
| 82 | #define CTRL_ACK 0xD |
| 83 | #define CTRL_CF_END 0xE |
| 84 | #define CTRL_END_ACK 0xF |
| 85 | |
| 86 | #define DATA_DATA 0x0 |
| 87 | #define DATA_DATA_CF_ACK 0x1 |
| 88 | #define DATA_DATA_CF_POLL 0x2 |
| 89 | #define DATA_DATA_CF_ACK_POLL 0x3 |
| 90 | #define DATA_NODATA 0x4 |
| 91 | #define DATA_NODATA_CF_ACK 0x5 |
| 92 | #define DATA_NODATA_CF_POLL 0x6 |
| 93 | #define DATA_NODATA_CF_ACK_POLL 0x7 |
| 94 | |
| 95 | #define DATA_QOS_DATA 0x8 |
| 96 | #define DATA_QOS_DATA_CF_ACK 0x9 |
| 97 | #define DATA_QOS_DATA_CF_POLL 0xA |
| 98 | #define DATA_QOS_DATA_CF_ACK_POLL 0xB |
| 99 | #define DATA_QOS_NODATA 0xC |
| 100 | #define DATA_QOS_CF_POLL_NODATA 0xE |
| 101 | #define DATA_QOS_CF_ACK_POLL_NODATA 0xF |
| 102 | |
| 103 | /* |
| 104 | * The subtype field of a data frame is, in effect, composed of 4 flag |
| 105 | * bits - CF-Ack, CF-Poll, Null (means the frame doesn't actually have |
| 106 | * any data), and QoS. |
| 107 | */ |
| 108 | #define DATA_FRAME_IS_CF_ACK(x) ((x) & 0x01) |
| 109 | #define DATA_FRAME_IS_CF_POLL(x) ((x) & 0x02) |
| 110 | #define DATA_FRAME_IS_NULL(x) ((x) & 0x04) |
| 111 | #define DATA_FRAME_IS_QOS(x) ((x) & 0x08) |
| 112 | |
| 113 | /* |
| 114 | * Bits in the frame control field. |
| 115 | */ |
| 116 | #define FC_VERSION(fc) ((fc) & 0x3) |
| 117 | #define FC_TYPE(fc) (((fc) >> 2) & 0x3) |
| 118 | #define FC_SUBTYPE(fc) (((fc) >> 4) & 0xF) |
| 119 | #define FC_TO_DS(fc) ((fc) & 0x0100) |
| 120 | #define FC_FROM_DS(fc) ((fc) & 0x0200) |
| 121 | #define FC_MORE_FLAG(fc) ((fc) & 0x0400) |
| 122 | #define FC_RETRY(fc) ((fc) & 0x0800) |
| 123 | #define FC_POWER_MGMT(fc) ((fc) & 0x1000) |
| 124 | #define FC_MORE_DATA(fc) ((fc) & 0x2000) |
| 125 | #define FC_WEP(fc) ((fc) & 0x4000) |
| 126 | #define FC_ORDER(fc) ((fc) & 0x8000) |
| 127 | |
| 128 | struct mgmt_header_t { |
| 129 | u_int16_t fc; |
| 130 | u_int16_t duration; |
| 131 | u_int8_t da[6]; |
| 132 | u_int8_t sa[6]; |
| 133 | u_int8_t bssid[6]; |
| 134 | u_int16_t seq_ctrl; |
| 135 | }; |
| 136 | |
| 137 | #define MGMT_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\ |
| 138 | IEEE802_11_DA_LEN+IEEE802_11_SA_LEN+\ |
| 139 | IEEE802_11_BSSID_LEN+IEEE802_11_SEQ_LEN) |
| 140 | |
| 141 | #define CAPABILITY_ESS(cap) ((cap) & 0x0001) |
| 142 | #define CAPABILITY_IBSS(cap) ((cap) & 0x0002) |
| 143 | #define CAPABILITY_CFP(cap) ((cap) & 0x0004) |
| 144 | #define CAPABILITY_CFP_REQ(cap) ((cap) & 0x0008) |
| 145 | #define CAPABILITY_PRIVACY(cap) ((cap) & 0x0010) |
| 146 | |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 147 | struct ssid_t { |
| 148 | u_int8_t element_id; |
| 149 | u_int8_t length; |
| 150 | u_char ssid[33]; /* 32 + 1 for null */ |
| 151 | }; |
| 152 | |
| 153 | struct rates_t { |
| 154 | u_int8_t element_id; |
| 155 | u_int8_t length; |
| 156 | u_int8_t rate[16]; |
| 157 | }; |
| 158 | |
| 159 | struct challenge_t { |
| 160 | u_int8_t element_id; |
| 161 | u_int8_t length; |
| 162 | u_int8_t text[254]; /* 1-253 + 1 for null */ |
| 163 | }; |
| 164 | |
| 165 | struct fh_t { |
| 166 | u_int8_t element_id; |
| 167 | u_int8_t length; |
| 168 | u_int16_t dwell_time; |
| 169 | u_int8_t hop_set; |
| 170 | u_int8_t hop_pattern; |
| 171 | u_int8_t hop_index; |
| 172 | }; |
| 173 | |
| 174 | struct ds_t { |
| 175 | u_int8_t element_id; |
| 176 | u_int8_t length; |
| 177 | u_int8_t channel; |
| 178 | }; |
| 179 | |
| 180 | struct cf_t { |
| 181 | u_int8_t element_id; |
| 182 | u_int8_t length; |
| 183 | u_int8_t count; |
| 184 | u_int8_t period; |
| 185 | u_int16_t max_duration; |
| 186 | u_int16_t dur_remaing; |
| 187 | }; |
| 188 | |
| 189 | struct tim_t { |
| 190 | u_int8_t element_id; |
| 191 | u_int8_t length; |
| 192 | u_int8_t count; |
| 193 | u_int8_t period; |
| 194 | u_int8_t bitmap_control; |
| 195 | u_int8_t bitmap[251]; |
| 196 | }; |
| 197 | |
| 198 | #define E_SSID 0 |
| 199 | #define E_RATES 1 |
| 200 | #define E_FH 2 |
| 201 | #define E_DS 3 |
| 202 | #define E_CF 4 |
| 203 | #define E_TIM 5 |
| 204 | #define E_IBSS 6 |
| 205 | /* reserved 7 */ |
| 206 | /* reserved 8 */ |
| 207 | /* reserved 9 */ |
| 208 | /* reserved 10 */ |
| 209 | /* reserved 11 */ |
| 210 | /* reserved 12 */ |
| 211 | /* reserved 13 */ |
| 212 | /* reserved 14 */ |
| 213 | /* reserved 15 */ |
| 214 | /* reserved 16 */ |
| 215 | |
| 216 | #define E_CHALLENGE 16 |
| 217 | /* reserved 17 */ |
| 218 | /* reserved 18 */ |
| 219 | /* reserved 19 */ |
| 220 | /* reserved 16 */ |
| 221 | /* reserved 16 */ |
| 222 | |
| 223 | |
| 224 | struct mgmt_body_t { |
| 225 | u_int8_t timestamp[IEEE802_11_TSTAMP_LEN]; |
| 226 | u_int16_t beacon_interval; |
| 227 | u_int16_t listen_interval; |
| 228 | u_int16_t status_code; |
| 229 | u_int16_t aid; |
| 230 | u_char ap[IEEE802_11_AP_LEN]; |
| 231 | u_int16_t reason_code; |
| 232 | u_int16_t auth_alg; |
| 233 | u_int16_t auth_trans_seq_num; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 234 | int challenge_present; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 235 | struct challenge_t challenge; |
| 236 | u_int16_t capability_info; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 237 | int ssid_present; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 238 | struct ssid_t ssid; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 239 | int rates_present; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 240 | struct rates_t rates; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 241 | int ds_present; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 242 | struct ds_t ds; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 243 | int cf_present; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 244 | struct cf_t cf; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 245 | int fh_present; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 246 | struct fh_t fh; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 247 | int tim_present; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 248 | struct tim_t tim; |
| 249 | }; |
| 250 | |
| 251 | struct ctrl_rts_t { |
| 252 | u_int16_t fc; |
| 253 | u_int16_t duration; |
| 254 | u_int8_t ra[6]; |
| 255 | u_int8_t ta[6]; |
| 256 | u_int8_t fcs[4]; |
| 257 | }; |
| 258 | |
| 259 | #define CTRL_RTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\ |
| 260 | IEEE802_11_RA_LEN+IEEE802_11_TA_LEN) |
| 261 | |
| 262 | struct ctrl_cts_t { |
| 263 | u_int16_t fc; |
| 264 | u_int16_t duration; |
| 265 | u_int8_t ra[6]; |
| 266 | u_int8_t fcs[4]; |
| 267 | }; |
| 268 | |
| 269 | #define CTRL_CTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN) |
| 270 | |
| 271 | struct ctrl_ack_t { |
| 272 | u_int16_t fc; |
| 273 | u_int16_t duration; |
| 274 | u_int8_t ra[6]; |
| 275 | u_int8_t fcs[4]; |
| 276 | }; |
| 277 | |
| 278 | #define CTRL_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN) |
| 279 | |
| 280 | struct ctrl_ps_poll_t { |
| 281 | u_int16_t fc; |
| 282 | u_int16_t aid; |
| 283 | u_int8_t bssid[6]; |
| 284 | u_int8_t ta[6]; |
| 285 | u_int8_t fcs[4]; |
| 286 | }; |
| 287 | |
| 288 | #define CTRL_PS_POLL_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_AID_LEN+\ |
| 289 | IEEE802_11_BSSID_LEN+IEEE802_11_TA_LEN) |
| 290 | |
| 291 | struct ctrl_end_t { |
| 292 | u_int16_t fc; |
| 293 | u_int16_t duration; |
| 294 | u_int8_t ra[6]; |
| 295 | u_int8_t bssid[6]; |
| 296 | u_int8_t fcs[4]; |
| 297 | }; |
| 298 | |
| 299 | #define CTRL_END_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\ |
| 300 | IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN) |
| 301 | |
| 302 | struct ctrl_end_ack_t { |
| 303 | u_int16_t fc; |
| 304 | u_int16_t duration; |
| 305 | u_int8_t ra[6]; |
| 306 | u_int8_t bssid[6]; |
| 307 | u_int8_t fcs[4]; |
| 308 | }; |
| 309 | |
| 310 | #define CTRL_END_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\ |
| 311 | IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN) |
| 312 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 313 | struct ctrl_ba_t { |
| 314 | u_int16_t fc; |
| 315 | u_int16_t duration; |
| 316 | u_int8_t ra[6]; |
| 317 | u_int8_t fcs[4]; |
| 318 | }; |
| 319 | |
| 320 | #define CTRL_BA_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN) |
| 321 | |
| 322 | struct ctrl_bar_t { |
| 323 | u_int16_t fc; |
| 324 | u_int16_t dur; |
| 325 | u_int8_t ra[6]; |
| 326 | u_int8_t ta[6]; |
| 327 | u_int16_t ctl; |
| 328 | u_int16_t seq; |
| 329 | u_int8_t fcs[4]; |
| 330 | }; |
| 331 | |
| 332 | #define CTRL_BAR_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\ |
| 333 | IEEE802_11_RA_LEN+IEEE802_11_TA_LEN+\ |
| 334 | IEEE802_11_CTL_LEN+IEEE802_11_SEQ_LEN) |
| 335 | |
| 336 | struct meshcntl_t { |
| 337 | u_int8_t flags; |
| 338 | u_int8_t ttl; |
| 339 | u_int8_t seq[4]; |
| 340 | u_int8_t addr4[6]; |
| 341 | u_int8_t addr5[6]; |
| 342 | u_int8_t addr6[6]; |
| 343 | }; |
| 344 | |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 345 | #define IV_IV(iv) ((iv) & 0xFFFFFF) |
| 346 | #define IV_PAD(iv) (((iv) >> 24) & 0x3F) |
| 347 | #define IV_KEYID(iv) (((iv) >> 30) & 0x03) |