sys/compat/linuxkpi/common/include/linux/ieee80211.h

   1 /*-
   2  * Copyright (c) 2020-2021 The FreeBSD Foundation
   3  *
   4  * This software was developed by Björn Zeeb under sponsorship from
   5  * the FreeBSD Foundation.
   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 AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  * $FreeBSD$
  29  */
  30
  31 #ifndef _LINUXKPI_LINUX_IEEE80211_H
  32 #define _LINUXKPI_LINUX_IEEE80211_H
  33
  34 #include <sys/types.h>
  35 #include <net80211/ieee80211.h>
  36
  37 #include <asm/unaligned.h>
  38 #include <linux/bitops.h>
  39 #include <linux/if_ether.h>
  40
  41 /* linux_80211.c */
  42 extern int debug_80211;
  43
  44
  45 #define IEEE80211_CCMP_HDR_LEN                  8       /* 802.11i .. net80211 comment */
  46 #define IEEE80211_CCMP_PN_LEN                   6
  47 #define IEEE80211_CCMP_MIC_LEN                  8       /* || 16 */
  48 #define IEEE80211_GCMP_HDR_LEN                  8
  49 #define IEEE80211_GCMP_PN_LEN                   6
  50 #define IEEE80211_GMAC_PN_LEN                   6
  51
  52 #define IEEE80211_MAX_PN_LEN                    16
  53
  54 #define IEEE80211_INVAL_HW_QUEUE                ((uint8_t)-1)
  55
  56 #define IEEE80211_MAX_AMPDU_BUF_HT              0x40
  57 #define IEEE80211_MAX_AMPDU_BUF                 256     /* for HE? */
  58
  59 #define IEEE80211_MAX_DATA_LEN                  (2300 + IEEE80211_CRC_LEN)
  60
  61 #define IEEE80211_MAX_MPDU_LEN_HT_BA            4095    /* 9.3.2.1 Format of Data frames; non-VHT non-DMG STA */
  62 #define IEEE80211_MAX_MPDU_LEN_HT_3839          3839
  63 #define IEEE80211_MAX_MPDU_LEN_VHT_3895         3895
  64 #define IEEE80211_MAX_MPDU_LEN_VHT_7991         7991
  65 #define IEEE80211_MAX_MPDU_LEN_VHT_11454        11454
  66
  67 #define IEEE80211_MAX_RTS_THRESHOLD             2346    /* net80211::IEEE80211_RTS_MAX */
  68
  69 #define IEEE80211_MIN_ACTION_SIZE               23      /* ? */
  70
  71 /* Wi-Fi Peer-to-Peer (P2P) Technical Specification */
  72 #define IEEE80211_P2P_OPPPS_CTWINDOW_MASK       0x7f
  73 #define IEEE80211_P2P_OPPPS_ENABLE_BIT          BIT(7)
  74
  75 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
  76 #define IEEE80211_QOS_CTL_EOSP                  0x0010
  77 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080  /* 9.2.4.5.1, Table 9-6 QoS Control Field */
  78
  79 #define IEEE80211_RATE_SHORT_PREAMBLE           BIT(0)
  80
  81 enum ieee80211_rate_control_changed_flags {
  82         IEEE80211_RC_BW_CHANGED                 = BIT(0),
  83         IEEE80211_RC_NSS_CHANGED                = BIT(1),
  84         IEEE80211_RC_SUPP_RATES_CHANGED         = BIT(2),
  85 };
  86
  87 #define IEEE80211_SCTL_FRAG                     IEEE80211_SEQ_FRAG_MASK
  88 #define IEEE80211_SCTL_SEQ                      IEEE80211_SEQ_SEQ_MASK
  89
  90 #define IEEE80211_TKIP_ICV_LEN                  4
  91 #define IEEE80211_TKIP_IV_LEN                   8       /* WEP + KID + EXT */
  92
  93 #define IEEE80211_VHT_EXT_NSS_BW_CAPABLE        (1 << 13)       /* assigned to tx_highest */
  94
  95 #define IEEE80211_VHT_MAX_AMPDU_1024K           7       /* 9.4.2.56.3 A-MPDU Parameters field, Table 9-163 */
  96
  97 #define IEEE80211_WEP_IV_LEN                    3       /* net80211: IEEE80211_WEP_IVLEN */
  98 #define IEEE80211_WEP_ICV_LEN                   4
  99
 100 #define WLAN_AUTH_OPEN                          __LINE__ /* TODO FIXME brcmfmac */
 101 #define WLAN_CAPABILITY_IBSS                    __LINE__ /* TODO FIXME no longer used? */
 102 #define WLAN_CAPABILITY_SHORT_PREAMBLE          __LINE__ /* TODO FIXME brcmfmac */
 103 #define WLAN_CAPABILITY_SHORT_SLOT_TIME         __LINE__ /* TODO FIXME brcmfmac */
 104
 105
 106 #define WLAN_MAX_KEY_LEN                        32 /* TODO FIXME brcmfmac */
 107 #define WLAN_PMKID_LEN                          16 /* TODO FIXME brcmfmac */
 108
 109 #define WLAN_KEY_LEN_CCMP                       16
 110 #define WLAN_KEY_LEN_GCMP_256                   32
 111
 112 /* 9.4.2.56.3, Table 9-163 Subfields of the A-MPDU Parameters field */
 113 enum ieee80211_min_mpdu_start_spacing {
 114         IEEE80211_HT_MPDU_DENSITY_NONE          = 0,
 115         IEEE80211_HT_MPDU_DENSITY_4             = 5,    /* 4us */
 116         IEEE80211_HT_MPDU_DENSITY_16            = 7,    /* 16us */
 117 };
 118
 119 /* 9.4.2.57, Table 9-168, HT Operation element fields and subfields */
 120 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT   0x0080  /* B24.. */
 121
 122 #define IEEE80211_FCTL_STYPE                    IEEE80211_FC0_SUBTYPE_MASK
 123 #define IEEE80211_FCTL_ORDER                    (IEEE80211_FC1_ORDER << 8)
 124
 125 #define IEEE80211_STYPE_ASSOC_REQ               IEEE80211_FC0_SUBTYPE_ASSOC_REQ
 126 #define IEEE80211_STYPE_REASSOC_REQ             IEEE80211_FC0_SUBTYPE_REASSOC_REQ
 127 #define IEEE80211_STYPE_PROBE_REQ               IEEE80211_FC0_SUBTYPE_PROBE_REQ
 128 #define IEEE80211_STYPE_DISASSOC                IEEE80211_FC0_SUBTYPE_DISASSOC
 129 #define IEEE80211_STYPE_AUTH                    IEEE80211_FC0_SUBTYPE_AUTH
 130 #define IEEE80211_STYPE_DEAUTH                  IEEE80211_FC0_SUBTYPE_DEAUTH
 131 #define IEEE80211_STYPE_ACTION                  IEEE80211_FC0_SUBTYPE_ACTION
 132
 133 #define IEEE80211_NUM_ACS                       4       /* net8021::WME_NUM_AC */
 134
 135 #define IEEE80211_MAX_SSID_LEN                  32      /* 9.4.2.2 SSID element, net80211: IEEE80211_NWID_LEN */
 136
 137
 138 /* Figure 9-27, BAR Control field */
 139 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 140 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 141
 142 #define IEEE80211_PPE_THRES_INFO_PPET_SIZE              1 /* TODO FIXME ax? */
 143 #define IEEE80211_PPE_THRES_NSS_MASK                    2 /* TODO FIXME ax? */
 144 #define IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS        3 /* TODO FIXME ax? */
 145 #define IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK       8 /* TODO FIXME ax? */
 146
 147 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x03    /* MASK */
 148 #define IEEE80211_HT_OP_MODE_PROTECTION_NONE            0x00
 149 #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           0x01
 150 #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     0x02
 151 #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       0x03
 152
 153
 154 /* 9.6.13.1, Table 9-342 TDLS Action field values. */
 155 enum ieee80211_tdls_action_code {
 156         WLAN_TDLS_SETUP_REQUEST                 = 0,
 157         WLAN_TDLS_SETUP_RESPONSE                = 1,
 158         WLAN_TDLS_SETUP_CONFIRM                 = 2,
 159         WLAN_TDLS_TEARDOWN                      = 3,
 160         WLAN_TDLS_PEER_TRAFFIC_INDICATION       = 4,
 161         WLAN_TDLS_CHANNEL_SWITCH_REQUEST        = 5,
 162         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE       = 6,
 163         WLAN_TDLS_PEER_PSM_REQUEST              = 7,
 164         WLAN_TDLS_PEER_PSM_RESPONSE             = 8,
 165         WLAN_TDLS_PEER_TRAFFIC_RESPONSE         = 9,
 166         WLAN_TDLS_DISCOVERY_REQUEST             = 10,
 167         /* 11-255 reserved */
 168 };
 169
 170 /* 9.4.2.27, Table 9-135. Extended Capabilities field. */
 171 /* This is split up into octets CAPA1 = octet 1, ... */
 172 #define WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING                    BIT(2  % 8)
 173 #define WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT                      BIT(22 % 8)
 174 #define WLAN_EXT_CAPA8_OPMODE_NOTIF                             BIT(62 % 8)
 175 #define WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT                   BIT(5)          /* XXX */
 176 #define WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT     BIT(7)          /* XXX */
 177
 178
 179 /* iwlwifi/mvm/utils:: for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) */
 180 /* Would be so much easier if we'd define constants to the same. */
 181 enum ieee80211_ac_numbers {
 182         IEEE80211_AC_VO = 0,                    /* net80211::WME_AC_VO */
 183         IEEE80211_AC_VI = 1,                    /* net80211::WME_AC_VI */
 184         IEEE80211_AC_BE = 2,                    /* net80211::WME_AC_BE */
 185         IEEE80211_AC_BK = 3,                    /* net80211::WME_AC_BK */
 186 };
 187
 188 #define IEEE80211_MAX_QUEUES                    16      /* Assume IEEE80211_NUM_TIDS for the moment. */
 189
 190 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      1
 191 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      2
 192 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      4
 193 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      8
 194 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0xf
 195
 196 struct vht_mcs {
 197         uint16_t        rx_mcs_map;
 198         uint16_t        rx_highest;
 199         uint16_t        tx_mcs_map;
 200         uint16_t        tx_highest;
 201 };
 202
 203 struct ieee80211_vht_cap {
 204         struct vht_mcs                          supp_mcs;;
 205         __le32                                  vht_cap_info;
 206 };
 207
 208 enum ieee80211_ht_max_ampdu_len {
 209         IEEE80211_HT_MAX_AMPDU_64K
 210 };
 211
 212 enum ieee80211_ampdu_mlme_action {
 213         IEEE80211_AMPDU_RX_START,
 214         IEEE80211_AMPDU_RX_STOP,
 215         IEEE80211_AMPDU_TX_OPERATIONAL,
 216         IEEE80211_AMPDU_TX_START,
 217         IEEE80211_AMPDU_TX_START_DELAY_ADDBA,
 218         IEEE80211_AMPDU_TX_START_IMMEDIATE,
 219         IEEE80211_AMPDU_TX_STOP_CONT,
 220         IEEE80211_AMPDU_TX_STOP_FLUSH,
 221         IEEE80211_AMPDU_TX_STOP_FLUSH_CONT
 222 };
 223
 224 enum ieee80211_chanctx_switch_mode {
 225         CHANCTX_SWMODE_REASSIGN_VIF,
 226         CHANCTX_SWMODE_SWAP_CONTEXTS,
 227 };
 228
 229 enum ieee80211_chanctx_change_flags {
 230         IEEE80211_CHANCTX_CHANGE_MIN_WIDTH      = BIT(0),
 231         IEEE80211_CHANCTX_CHANGE_RADAR          = BIT(1),
 232         IEEE80211_CHANCTX_CHANGE_RX_CHAINS      = BIT(2),
 233         IEEE80211_CHANCTX_CHANGE_WIDTH          = BIT(3),
 234 };
 235
 236 enum ieee80211_frame_release_type {
 237         IEEE80211_FRAME_RELEASE_PSPOLL          = 1,
 238         IEEE80211_FRAME_RELEASE_UAPSD           = 2,
 239 };
 240
 241 enum ieee80211_p2p_attr_ids {
 242         IEEE80211_P2P_ATTR_DEVICE_ID,
 243         IEEE80211_P2P_ATTR_DEVICE_INFO,
 244         IEEE80211_P2P_ATTR_GROUP_ID,
 245         IEEE80211_P2P_ATTR_LISTEN_CHANNEL,
 246 };
 247
 248 enum ieee80211_reconfig_type {
 249         IEEE80211_RECONFIG_TYPE_RESTART,
 250         IEEE80211_RECONFIG_TYPE_SUSPEND,
 251 };
 252
 253 enum ieee80211_roc_type {
 254         IEEE80211_ROC_TYPE_MGMT_TX,
 255         IEEE80211_ROC_TYPE_NORMAL,
 256 };
 257
 258 enum ieee80211_smps_mode {
 259         IEEE80211_SMPS_OFF,
 260         IEEE80211_SMPS_STATIC,
 261         IEEE80211_SMPS_DYNAMIC,
 262         IEEE80211_SMPS_AUTOMATIC,
 263         IEEE80211_SMPS_NUM_MODES,
 264 };
 265
 266 /* net80211::IEEE80211_S_* different but represents the state machine. */
 267 /* Note: order here is important! */
 268 enum ieee80211_sta_state {
 269         IEEE80211_STA_NOTEXIST,
 270         IEEE80211_STA_NONE,
 271         IEEE80211_STA_AUTH,
 272         IEEE80211_STA_ASSOC,
 273         IEEE80211_STA_AUTHORIZED,               /* 802.1x */
 274 };
 275
 276 enum ieee80211_sta_rx_bw {
 277         IEEE80211_STA_RX_BW_20,
 278         IEEE80211_STA_RX_BW_40,
 279         IEEE80211_STA_RX_BW_80,
 280         IEEE80211_STA_RX_BW_160,
 281 };
 282
 283 enum ieee80211_tx_info_flags {
 284         /* XXX TODO .. right shift numbers - not sure where that came from? */
 285         IEEE80211_TX_CTL_AMPDU                  = BIT(0),
 286         IEEE80211_TX_CTL_ASSIGN_SEQ             = BIT(1),
 287         IEEE80211_TX_CTL_NO_ACK                 = BIT(2),
 288         IEEE80211_TX_CTL_SEND_AFTER_DTIM        = BIT(3),
 289         IEEE80211_TX_CTL_TX_OFFCHAN             = BIT(4),
 290         IEEE80211_TX_CTL_REQ_TX_STATUS          = BIT(5),
 291         IEEE80211_TX_STATUS_EOSP                = BIT(6),
 292         IEEE80211_TX_STAT_ACK                   = BIT(7),
 293         IEEE80211_TX_STAT_AMPDU                 = BIT(8),
 294         IEEE80211_TX_STAT_AMPDU_NO_BACK         = BIT(9),
 295         IEEE80211_TX_STAT_TX_FILTERED           = BIT(10),
 296         IEEE80211_TX_STAT_NOACK_TRANSMITTED     = BIT(11),
 297 };
 298
 299 enum ieee80211_tx_control_flags {
 300         /* XXX TODO .. right shift numbers */
 301         IEEE80211_TX_CTRL_PORT_CTRL_PROTO       = BIT(0),
 302 };
 303
 304 enum ieee80211_tx_rate_flags {
 305         /* XXX TODO .. right shift numbers */
 306         IEEE80211_TX_RC_40_MHZ_WIDTH            = BIT(0),
 307         IEEE80211_TX_RC_80_MHZ_WIDTH            = BIT(1),
 308         IEEE80211_TX_RC_160_MHZ_WIDTH           = BIT(2),
 309         IEEE80211_TX_RC_GREEN_FIELD             = BIT(3),
 310         IEEE80211_TX_RC_MCS                     = BIT(4),
 311         IEEE80211_TX_RC_SHORT_GI                = BIT(5),
 312         IEEE80211_TX_RC_VHT_MCS                 = BIT(6),
 313 };
 314
 315 #define IEEE80211_HT_CTL_LEN    4
 316
 317 struct ieee80211_hdr {          /* net80211::ieee80211_frame */
 318         __le16          frame_control;
 319         __le16          duration_id;
 320         uint8_t         addr1[ETH_ALEN];
 321         uint8_t         addr2[ETH_ALEN];
 322         uint8_t         addr3[ETH_ALEN];
 323         __le16          seq_ctrl;
 324         uint8_t         addr4[ETH_ALEN];
 325 };
 326
 327 struct ieee80211_vendor_ie {
 328 };
 329
 330 /* 9.3.3.2 Format of Management frames */
 331 struct ieee80211_mgmt {
 332         __le16          frame_control;
 333         __le16          duration_id;
 334         uint8_t         da[ETH_ALEN];
 335         uint8_t         sa[ETH_ALEN];
 336         uint8_t         bssid[ETH_ALEN];
 337         __le16          seq_ctrl;
 338         union {
 339                 /* 9.3.3.3 Beacon frame format */
 340                 struct {
 341                         uint64_t        timestamp;
 342                         uint16_t        beacon_int;
 343                         uint16_t        capab_info;
 344                         uint8_t         variable[0];
 345                 } beacon;
 346                 /* 9.3.3.10 Probe Request frame format */
 347                 struct {
 348                         uint8_t         variable[0];
 349                 } probe_req;
 350                 /* 9.3.3.11 Probe Response frame format */
 351                 struct {
 352                         uint64_t        timestamp;
 353                         uint16_t        beacon_int;
 354                         uint16_t        capab_info;
 355                         uint8_t         variable[0];
 356                 } probe_resp;
 357                 /* 9.3.3.14 Action frame format */
 358                 struct {
 359                         /* 9.4.1.11 Action field */
 360                         uint8_t         category;
 361                         /* 9.6.8 Public Action details */
 362                         union {
 363                                 /* 9.6.8.33 Fine Timing Measurement frame format */
 364                                 struct {
 365                                         uint8_t dialog_token;
 366                                         uint8_t follow_up;
 367                                         uint8_t tod[6];
 368                                         uint8_t toa[6];
 369                                         uint16_t tod_error;
 370                                         uint16_t toa_error;
 371                                         uint8_t variable[0];
 372                                 } ftm;
 373                         } u;
 374                 } action;
 375         } u;
 376 };
 377
 378 #define MHZ_TO_KHZ(_f)          ((_f) * 1000)
 379 #define DBI_TO_MBI(_g)          ((_g) * 100)
 380 #define MBI_TO_DBI(_x)          ((_x) / 100)
 381 #define DBM_TO_MBM(_g)          ((_g) * 100)
 382 #define MBM_TO_DBM(_x)          ((_x) / 100)
 383
 384 #define IEEE80211_SEQ_TO_SN(_seqn)      (((_seqn) & IEEE80211_SEQ_SEQ_MASK) >> \
 385                                             IEEE80211_SEQ_SEQ_SHIFT)
 386
 387 /* Time unit (TU) to .. See net80211: IEEE80211_DUR_TU */
 388 #define TU_TO_JIFFIES(_tu)      (usecs_to_jiffies(_tu) * 1024)
 389 #define TU_TO_EXP_TIME(_tu)     (jiffies + TU_TO_JIFFIES(_tu))
 390
 391 /* 9.4.2.21.1, Table 9-82. */
 392 #define IEEE80211_SPCT_MSR_RPRT_TYPE_LCI        8
 393 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CIVIC      11
 394
 395 /* 9.4.2.1, Table 9-77. Element IDs. */
 396 enum ieee80211_eid {
 397         WLAN_EID_SSID                           = 0,
 398         WLAN_EID_SUPP_RATES                     = 1,
 399         WLAN_EID_DS_PARAMS                      = 3,
 400         WLAN_EID_TIM                            = 5,
 401         WLAN_EID_COUNTRY                        = 7, /* IEEE80211_ELEMID_COUNTRY */
 402         WLAN_EID_REQUEST                        = 10,
 403         WLAN_EID_CHANNEL_SWITCH                 = 37,
 404         WLAN_EID_MEASURE_REPORT                 = 39,
 405         WLAN_EID_RSN                            = 48, /* IEEE80211_ELEMID_RSN */
 406         WLAN_EID_EXT_SUPP_RATES                 = 50,
 407         WLAN_EID_EXT_CHANSWITCH_ANN             = 60,
 408         WLAN_EID_EXT_CAPABILITY                 = 127,
 409         WLAN_EID_VENDOR_SPECIFIC                = 221,
 410 };
 411
 412 /* 9.4.1.7, Table 9-45. Reason codes. */
 413 enum ieee80211_reason_code {
 414         /* reserved                             = 0, */
 415         WLAN_REASON_UNSPECIFIED                 = 1,
 416         WLAN_REASON_DEAUTH_LEAVING              = 3,    /* LEAVING_NETWORK_DEAUTH */
 417         WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED   = 26,
 418 };
 419
 420 /* 9.4.1.9, Table 9-46. Status codes. */
 421 enum ieee80211_status_code {
 422         WLAN_STATUS_SUCCESS                     = 0,
 423         WLAN_STATUS_AUTH_TIMEOUT                = 16,   /* REJECTED_SEQUENCE_TIMEOUT */
 424 };
 425
 426 /* net80211: IEEE80211_IS_CTL() */
 427 static __inline bool
 428 ieee80211_is_ctl(__le16 fc)
 429 {
 430         __le16 v;
 431
 432         fc &= htole16(IEEE80211_FC0_TYPE_MASK);
 433         v = htole16(IEEE80211_FC0_TYPE_CTL);
 434
 435         return (fc == v);
 436 }
 437
 438 /* net80211: IEEE80211_IS_DATA() */
 439 static __inline bool
 440 ieee80211_is_data(__le16 fc)
 441 {
 442         __le16 v;
 443
 444         fc &= htole16(IEEE80211_FC0_TYPE_MASK);
 445         v = htole16(IEEE80211_FC0_TYPE_DATA);
 446
 447         return (fc == v);
 448 }
 449
 450 /* net80211: IEEE80211_IS_QOSDATA() */
 451 static __inline bool
 452 ieee80211_is_data_qos(__le16 fc)
 453 {
 454         __le16 v;
 455
 456         fc &= htole16(IEEE80211_FC0_SUBTYPE_QOS | IEEE80211_FC0_TYPE_MASK |
 457             IEEE80211_FC0_VERSION_MASK);
 458         v = htole16(IEEE80211_FC0_QOSDATA);
 459
 460         return (fc == v);
 461 }
 462
 463 /* net80211: IEEE80211_IS_MGMT() */
 464 static __inline bool
 465 ieee80211_is_mgmt(__le16 fc)
 466 {
 467         __le16 v;
 468
 469         fc &= htole16(IEEE80211_FC0_TYPE_MASK);
 470         v = htole16(IEEE80211_FC0_TYPE_MGT);
 471
 472         return (fc == v);
 473 }
 474
 475
 476 /* Derived from net80211::ieee80211_anyhdrsize. */
 477 static __inline unsigned int
 478 ieee80211_hdrlen(__le16 fc)
 479 {
 480         unsigned int size;
 481
 482         if (ieee80211_is_ctl(fc)) {
 483                 switch (fc & htole16(IEEE80211_FC0_SUBTYPE_MASK)) {
 484                 case htole16(IEEE80211_FC0_SUBTYPE_CTS):
 485                 case htole16(IEEE80211_FC0_SUBTYPE_ACK):
 486                         return sizeof(struct ieee80211_frame_ack);
 487                 case htole16(IEEE80211_FC0_SUBTYPE_BAR):
 488                         return sizeof(struct ieee80211_frame_bar);
 489                 }
 490                 return (sizeof(struct ieee80211_frame_min));
 491         }
 492
 493         size = sizeof(struct ieee80211_frame);
 494         if (ieee80211_is_data(fc)) {
 495                 if ((fc & htole16(IEEE80211_FC1_DIR_MASK << 8)) ==
 496                     htole16(IEEE80211_FC1_DIR_DSTODS << 8))
 497                         size += IEEE80211_ADDR_LEN;
 498                 if ((fc & htole16(IEEE80211_FC0_SUBTYPE_QOS |
 499                     IEEE80211_FC0_TYPE_MASK)) ==
 500                     htole16(IEEE80211_FC0_SUBTYPE_QOS |
 501                     IEEE80211_FC0_TYPE_DATA))
 502                         size += sizeof(uint16_t);
 503         }
 504
 505         if (ieee80211_is_mgmt(fc)) {
 506 #ifdef __notyet__
 507                 if (debug_80211 > 0)
 508                         printf("XXX-BZ %s: TODO? fc %#04x size %u\n",
 509                             __func__, fc, size);
 510 #endif
 511                 ;
 512         }
 513
 514         return (size);
 515 }
 516
 517 #endif  /* _LINUXKPI_LINUX_IEEE80211_H */