FreeBSD/Linux Kernel Cross Reference
sys/dev/owi/if_wireg.h

     /*
      * Copyright (c) 1997, 1998, 1999
      *      Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Bill Paul.
     * 4. Neither the name of the author nor the names of any co-contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     * THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD: releng/5.3/sys/dev/owi/if_wireg.h 119392 2003-08-24 05:42:49Z imp $
     */
    
    #define WI_DELAY        5
    #define WI_TIMEOUT      (500000/WI_DELAY)       /* 500 ms */
    
    #define WI_PORT0        0
    #define WI_PORT1        1
    #define WI_PORT2        2
    #define WI_PORT3        3
    #define WI_PORT4        4
    #define WI_PORT5        5
    
    #define WI_PCI_LMEMRES  0x10    /* PCI Memory (native PCI implementations) */
    #define WI_PCI_LOCALRES 0x14    /* The PLX chip's local registers */
    #define WI_PCI_MEMRES   0x18    /* The PCCard's attribute memory */
    #define WI_PCI_IORES    0x1C    /* The PCCard's I/O space */
    
    #define WI_LOCAL_INTCSR         0x4c
    #define WI_LOCAL_INTEN          0x40
    
    /* Default port: 0 (only 0 exists on stations) */
    #define WI_DEFAULT_PORT (WI_PORT0 << 8)
    
    /* Default TX rate: 2Mbps, auto fallback */
    #define WI_DEFAULT_TX_RATE      3
    
    /* Default network name: ANY */
    /*
     * [sommerfeld 1999/07/15] Changed from "ANY" to ""; according to Bill Fenner,
     * ANY is used in MS driver user interfaces, while "" is used over the
     * wire..
     */
    #define WI_DEFAULT_NETNAME      ""
    
    #define WI_DEFAULT_AP_DENSITY   1
    
    #define WI_DEFAULT_RTS_THRESH   2347
    
    #define WI_DEFAULT_DATALEN      2304
    
    #define WI_DEFAULT_CREATE_IBSS  0
    
    #define WI_DEFAULT_PM_ENABLED   0
    
    #define WI_DEFAULT_MAX_SLEEP    100
    
    #define WI_DEFAULT_ROAMING      1
    
    #define WI_DEFAULT_AUTHTYPE     1
    
    #ifdef __NetBSD__
    #define OS_STRING_NAME  "NetBSD"
    #endif
    #ifdef __FreeBSD__
    #define OS_STRING_NAME  "FreeBSD"
    #endif
    #ifdef __OpenBSD__
    #define OS_STRING_NAME  "OpenBSD"
    #endif
    
    #define WI_DEFAULT_NODENAME     OS_STRING_NAME " WaveLAN/IEEE node"
    
    #define WI_DEFAULT_IBSS         OS_STRING_NAME " IBSS"
    
    #define WI_DEFAULT_CHAN         3
    
    #define WI_BUS_PCCARD           0       /* pccard device */
   #define WI_BUS_PCI_PLX          1       /* PCI card w/ PLX PCI/PCMICA bridge */
   #define WI_BUS_PCI_NATIVE       2       /* native PCI device (Prism 2.5) */
   
   /*
    * register space access macros
    */
   #define CSR_WRITE_4(sc, reg, val)                               \
           bus_space_write_4((sc)->wi_btag, (sc)->wi_bhandle,      \
               (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg), val)
   #define CSR_WRITE_2(sc, reg, val)                               \
           bus_space_write_2((sc)->wi_btag, (sc)->wi_bhandle,      \
               (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg), val)
   #define CSR_WRITE_1(sc, reg, val)                               \
           bus_space_write_1((sc)->wi_btag, (sc)->wi_bhandle,      \
               (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg), val)
   
   #define CSR_READ_4(sc, reg)                                     \
           bus_space_read_4((sc)->wi_btag, (sc)->wi_bhandle,       \
               (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg))
   #define CSR_READ_2(sc, reg)                                     \
           bus_space_read_2((sc)->wi_btag, (sc)->wi_bhandle,       \
               (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg))
   #define CSR_READ_1(sc, reg)                                     \
           bus_space_read_1((sc)->wi_btag, (sc)->wi_bhandle,       \
               (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg))
   
   #define CSM_WRITE_1(sc, off, val)       \
           bus_space_write_1((sc)->wi_bmemtag, (sc)->wi_bmemhandle, off, val)
   
   #define CSM_READ_1(sc, off)             \
           bus_space_read_1((sc)->wi_bmemtag, (sc)->wi_bmemhandle, off)
   
   #define CSR_WRITE_STREAM_2(sc, reg, val)        \
           bus_space_write_stream_2(sc->wi_btag, sc->wi_bhandle,   \
               (sc->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg) * 2 : (reg)), val)
   #define CSR_WRITE_MULTI_STREAM_2(sc, reg, val, count)   \
           bus_space_write_multi_stream_2(sc->wi_btag, sc->wi_bhandle,     \
               (sc->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg) * 2 : (reg)), val, count)
   #define CSR_READ_STREAM_2(sc, reg)              \
           bus_space_read_stream_2(sc->wi_btag, sc->wi_bhandle,    \
               (sc->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg) * 2 : (reg)))
   #define CSR_READ_MULTI_STREAM_2(sc, reg, buf, count)            \
           bus_space_read_multi_stream_2(sc->wi_btag, sc->wi_bhandle,      \
               (sc->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg) * 2 : (reg)), buf, count)
   
   /*
    * The WaveLAN/IEEE cards contain an 802.11 MAC controller which Lucent
    * calls 'Hermes.' In typical fashion, getting documentation about this
    * controller is about as easy as squeezing blood from a stone. Here
    * is more or less what I know:
    *
    * - The Hermes controller is firmware driven, and the host interacts
    *   with the Hermes via a firmware interface, which can change.
    *
    * - The Hermes is described in a document called: "Hermes Firmware
    *   WaveLAN/IEEE Station Functions," document #010245, which of course
    *   Lucent will not release without an NDA.
    *
    * - Lucent has created a library called HCF (Hardware Control Functions)
    *   though which it wants developers to interact with the card. The HCF
    *   is needlessly complex, ill conceived and badly documented. Actually,
    *   the comments in the HCP code itself aren't bad, but the publically
    *   available manual that comes with it is awful, probably due largely to
    *   the fact that it has been emasculated in order to hide information
    *   that Lucent wants to keep proprietary. The purpose of the HCF seems
    *   to be to insulate the driver programmer from the Hermes itself so that
    *   Lucent has an excuse not to release programming in for it.
    *
    * - Lucent only makes available documentation and code for 'HCF Light'
    *   which is a stripped down version of HCF with certain features not
    *   implemented, most notably support for 802.11 frames.
    *
    * - The HCF code which I have seen blows goats. Whoever decided to
    *   use a 132 column format should be shot.
    *
    * Rather than actually use the Lucent HCF library, I have stripped all
    * the useful information from it and used it to create a driver in the
    * usual BSD form. Note: I don't want to hear anybody whining about the
    * fact that the Lucent code is GPLed and mine isn't. I did not actually
    * put any of Lucent's code in this driver: I only used it as a reference
    * to obtain information about the underlying hardware. The Hermes
    * programming interface is not GPLed, so bite me.
    */
   
   /*
    * Size of Hermes & Prism2 I/O space.
    */
   #define WI_IOSIZ                0x40
   
   /*
    * Hermes & Prism2 register definitions 
    */
   
   /* Hermes command/status registers. */
   #define WI_COMMAND              0x00
   #define WI_PARAM0               0x02
   #define WI_PARAM1               0x04
   #define WI_PARAM2               0x06
   #define WI_STATUS               0x08
   #define WI_RESP0                0x0A
   #define WI_RESP1                0x0C
   #define WI_RESP2                0x0E
   
   /* Command register values. */
   #define WI_CMD_BUSY             0x8000 /* busy bit */
   #define WI_CMD_INI              0x0000 /* initialize */
   #define WI_CMD_ENABLE           0x0001 /* enable */
   #define WI_CMD_DISABLE          0x0002 /* disable */
   #define WI_CMD_DIAG             0x0003
   #define WI_CMD_ALLOC_MEM        0x000A /* allocate NIC memory */
   #define WI_CMD_TX               0x000B /* transmit */
   #define WI_CMD_NOTIFY           0x0010
   #define WI_CMD_INQUIRE          0x0011
   #define WI_CMD_ACCESS           0x0021
   #define WI_CMD_ACCESS_WRITE     0x0121
   #define WI_CMD_PROGRAM          0x0022
   #define WI_CMD_READEE           0x0030  /* symbol only */
   #define WI_CMD_READMIF          0x0030  /* prism2 */
   #define WI_CMD_WRITEMIF         0x0031  /* prism2 */
   #define WI_CMD_DEBUG            0x0038  /* Various test commands */
   
   #define WI_CMD_CODE_MASK        0x003F
   
   /*
    * Various cmd test stuff.
    */
   #define WI_TEST_MONITOR         0x0B
   #define WI_TEST_STOP            0x0F
   #define WI_TEST_CFG_BITS        0x15
   #define WI_TEST_CFG_BIT_ALC     0x08
   
   /*
    * Reclaim qualifier bit, applicable to the
    * TX and INQUIRE commands.
    */
   #define WI_RECLAIM              0x0100 /* reclaim NIC memory */
   
   /*
    * ACCESS command qualifier bits.
    */
   #define WI_ACCESS_READ          0x0000
   #define WI_ACCESS_WRITE         0x0100
   
   /*
    * PROGRAM command qualifier bits.
    */
   #define WI_PROGRAM_DISABLE      0x0000
   #define WI_PROGRAM_ENABLE_RAM   0x0100
   #define WI_PROGRAM_ENABLE_NVRAM 0x0200
   #define WI_PROGRAM_NVRAM        0x0300
   
   /* Status register values */
   #define WI_STAT_CMD_CODE        0x003F
   #define WI_STAT_DIAG_ERR        0x0100
   #define WI_STAT_INQ_ERR         0x0500
   #define WI_STAT_CMD_RESULT      0x7F00
   
   /* memory handle management registers */
   #define WI_INFO_FID             0x10
   #define WI_RX_FID               0x20
   #define WI_ALLOC_FID            0x22
   #define WI_TX_CMP_FID           0x24
   
   /*
    * Buffer Access Path (BAP) registers.
    * These are I/O channels. I believe you can use each one for
    * any desired purpose independently of the other. In general
    * though, we use BAP1 for reading and writing LTV records and
    * reading received data frames, and BAP0 for writing transmit
    * frames. This is a convention though, not a rule.
    */
   #define WI_SEL0                 0x18
   #define WI_SEL1                 0x1A
   #define WI_OFF0                 0x1C
   #define WI_OFF1                 0x1E
   #define WI_DATA0                0x36
   #define WI_DATA1                0x38
   #define WI_BAP0                 WI_DATA0
   #define WI_BAP1                 WI_DATA1
   
   #define WI_OFF_BUSY             0x8000
   #define WI_OFF_ERR              0x4000
   #define WI_OFF_DATAOFF          0x0FFF
   
   /* Event registers */
   #define WI_EVENT_STAT           0x30    /* Event status */
   #define WI_INT_EN               0x32    /* Interrupt enable/disable */
   #define WI_EVENT_ACK            0x34    /* Ack event */
   
   /* Events */
   #define WI_EV_TICK              0x8000  /* aux timer tick */
   #define WI_EV_RES               0x4000  /* controller h/w error (time out) */
   #define WI_EV_INFO_DROP         0x2000  /* no RAM to build unsolicited frame */
   #define WI_EV_NO_CARD           0x0800  /* card removed (hunh?) */
   #define WI_EV_DUIF_RX           0x0400  /* wavelan management packet received */
   #define WI_EV_INFO              0x0080  /* async info frame */
   #define WI_EV_CMD               0x0010  /* command completed */
   #define WI_EV_ALLOC             0x0008  /* async alloc/reclaim completed */
   #define WI_EV_TX_EXC            0x0004  /* async xmit completed with failure */
   #define WI_EV_TX                0x0002  /* async xmit completed succesfully */
   #define WI_EV_RX                0x0001  /* async rx completed */
   
   #define WI_INTRS        \
           (WI_EV_RX|WI_EV_TX|WI_EV_TX_EXC|WI_EV_ALLOC|WI_EV_INFO|WI_EV_INFO_DROP)
   
   /* Host software registers */
   #define WI_SW0                  0x28
   #define WI_SW1                  0x2A
   #define WI_SW2                  0x2C
   #define WI_SW3                  0x2E    /* does not appear in Prism2 */
   
   #define WI_CNTL                 0x14
   
   #define WI_CNTL_AUX_ENA         0xC000
   #define WI_CNTL_AUX_ENA_STAT    0xC000
   #define WI_CNTL_AUX_DIS_STAT    0x0000
   #define WI_CNTL_AUX_ENA_CNTL    0x8000
   #define WI_CNTL_AUX_DIS_CNTL    0x4000
   
   #define WI_AUX_PAGE             0x3A
   #define WI_AUX_OFFSET           0x3C
   #define WI_AUX_DATA             0x3E
   
   #define WI_AUX_PGSZ             128
   #define WI_AUX_KEY0             0xfe01
   #define WI_AUX_KEY1             0xdc23
   #define WI_AUX_KEY2             0xba45
   
   #define WI_COR                  0x40    /* only for Symbol */
   #define WI_COR_RESET            0x0080
   #define WI_COR_IOMODE           0x0041
   
   #define WI_HCR                  0x42    /* only for Symbol */
   #define WI_HCR_4WIRE            0x0010
   #define WI_HCR_RUN              0x0007
   #define WI_HCR_HOLD             0x000f
   #define WI_HCR_EEHOLD           0x00ce
   
   #define WI_COR_OFFSET   0x3e0   /* OK for PCI, must be bogus for pccard */
   #define WI_COR_VALUE    0x41
   
   /*
    * One form of communication with the Hermes is with what Lucent calls
    * LTV records, where LTV stands for Length, Type and Value. The length
    * and type are 16 bits and are in native byte order. The value is in
    * multiples of 16 bits and is in little endian byte order.
    */
   struct wi_ltv_gen {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_val;
   };
   
   struct wi_ltv_str {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_str[17];
   };
   
   #define WI_SETVAL(recno, val)                   \
           do {                                    \
                   struct wi_ltv_gen       g;      \
                                                   \
                   g.wi_len = 2;                   \
                   g.wi_type = recno;              \
                   g.wi_val = htole16(val);        \
                   wi_write_record(sc, &g);        \
           } while (0)
   
   #define WI_SETSTR(recno, str)                                   \
           do {                                                    \
                   struct wi_ltv_str       s;                      \
                   int                     l;                      \
                                                                   \
                   l = (strlen(str) + 1) & ~0x1;                   \
                   bzero((char *)&s, sizeof(s));                   \
                   s.wi_len = (l / 2) + 2;                         \
                   s.wi_type = recno;                              \
                   s.wi_str[0] = htole16(strlen(str));             \
                   bcopy(str, (char *)&s.wi_str[1], strlen(str));  \
                   wi_write_record(sc, (struct wi_ltv_gen *)&s);   \
           } while (0)
   
   /*
    * Download buffer location and length (0xFD01).
    */
   struct wi_ltv_dnld_buf {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_buf_pg; /* page addr of intermediate dl buf*/
           u_int16_t               wi_buf_off; /* offset of idb */
           u_int16_t               wi_buf_len; /* len of idb */
   };
   
   /*
    * Mem sizes (0xFD02).
    */
   struct wi_ltv_memsz {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_mem_ram;
           u_int16_t               wi_mem_nvram;
   };
   
   /*
    * NIC Identification (0xFD0B, 0xFD20)
    */
   struct wi_ltv_ver {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_ver[4];
   };
   
   /* define card ident */
   #define WI_NIC_LUCENT_ID        0x0001
   #define WI_NIC_LUCENT_STR       "Lucent Technologies, WaveLAN/IEEE"
   
   #define WI_NIC_SONY_ID          0x0002
   #define WI_NIC_SONY_STR         "Sony WaveLAN/IEEE"
   
   #define WI_NIC_LUCENT_EMB_ID    0x0005
   #define WI_NIC_LUCENT_EMB_STR   "Lucent Embedded WaveLAN/IEEE"
   
   /*
    * List of intended regulatory domains (0xFD11).
    */
   struct wi_ltv_domains {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_num_dom;
           u_int8_t                wi_domains[10];
   };
   
   /*
    * CIS struct (0xFD13).
    */
   struct wi_ltv_cis {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_cis[240];
   };
   
   /*
    * Communications quality (0xFD43).
    */
   struct wi_ltv_commqual {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_coms_qual;
           u_int16_t               wi_sig_lvl;
           u_int16_t               wi_noise_lvl;
   };
   
   /*
    * Actual system scale thresholds (0xFC06, 0xFD46).
    */
   struct wi_ltv_scalethresh {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_energy_detect;
           u_int16_t               wi_carrier_detect;
           u_int16_t               wi_defer;
           u_int16_t               wi_cell_search;
           u_int16_t               wi_out_of_range;
           u_int16_t               wi_delta_snr;
   };
   
   /*
    * PCF info struct (0xFD87).
    */
   struct wi_ltv_pcf {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_energy_detect;
           u_int16_t               wi_carrier_detect;
           u_int16_t               wi_defer;
           u_int16_t               wi_cell_search;
           u_int16_t               wi_range;
   };
   
   /*
    * Connection control characteristics. (0xFC00)
    * 0 == IBSS (802.11 compliant mode) (Only PRISM2)
    * 1 == Basic Service Set (BSS)
    * 2 == Wireless Distribudion System (WDS)
    * 3 == Pseudo IBSS 
    *      (Only PRISM2; not 802.11 compliant mode, testing use only)
    * 6 == HOST AP (Only PRISM2)
    */
   #define WI_PORTTYPE_BSS         0x1
   #define WI_PORTTYPE_WDS         0x2
   #define WI_PORTTYPE_ADHOC       0x3
   #define WI_PORTTYPE_IBSS        0x4
   #define WI_PORTTYPE_HOSTAP      0x6
   
   /*
    * Mac addresses. (0xFC01, 0xFC08)
    */
   struct wi_ltv_macaddr {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_mac_addr[3];
   };
   
   /*
    * Station set identification (SSID). (0xFC02, 0xFC04)
    */
   struct wi_ltv_ssid {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_id[17];
   };
   
   /*
    * Set our station name. (0xFC0E)
    */
   struct wi_ltv_nodename {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           u_int16_t               wi_nodename[17];
   };
   
   /*
    * Multicast addresses to be put in filter. We're
    * allowed up to 16 addresses in the filter. (0xFC80)
    */
   struct wi_ltv_mcast {
           u_int16_t               wi_len;
           u_int16_t               wi_type;
           struct ether_addr       wi_mcast[16];
   };
   
   /*
    * supported rates. (0xFCB4)
    */
   #define WI_SUPPRATES_1M         0x0001
   #define WI_SUPPRATES_2M         0x0002
   #define WI_SUPPRATES_5M         0x0004
   #define WI_SUPPRATES_11M        0x0008
   #define WI_RATES_BITS   "\2\0011M\0022M\0035.5M\00411M"
   
   /*
    * Information frame types.
    */
   #define WI_INFO_NOTIFY          0xF000  /* Handover address */
   #define WI_INFO_COUNTERS        0xF100  /* Statistics counters */
   #define WI_INFO_SCAN_RESULTS    0xF101  /* Scan results */
   #define WI_INFO_LINK_STAT       0xF200  /* Link status */
   #define WI_INFO_ASSOC_STAT      0xF201  /* Association status */
   
   /*
    * Hermes transmit/receive frame structure
    */
   struct wi_frame {
           u_int16_t               wi_status;      /* 0x00 */
           u_int16_t               wi_rsvd0;       /* 0x02 */
           u_int16_t               wi_rsvd1;       /* 0x04 */
           u_int16_t               wi_q_info;      /* 0x06 */
           u_int16_t               wi_rsvd2;       /* 0x08 */
           u_int8_t                wi_tx_rtry;     /* 0x0A */
           u_int8_t                wi_tx_rate;     /* 0x0B */
           u_int16_t               wi_tx_ctl;      /* 0x0C */
           u_int16_t               wi_frame_ctl;   /* 0x0E */
           u_int16_t               wi_id;          /* 0x10 */
           u_int8_t                wi_addr1[6];    /* 0x12 */
           u_int8_t                wi_addr2[6];    /* 0x18 */
           u_int8_t                wi_addr3[6];    /* 0x1E */
           u_int16_t               wi_seq_ctl;     /* 0x24 */
           u_int8_t                wi_addr4[6];    /* 0x26 */
           u_int16_t               wi_dat_len;     /* 0x2C */
           u_int8_t                wi_dst_addr[6]; /* 0x2E */
           u_int8_t                wi_src_addr[6]; /* 0x34 */
           u_int16_t               wi_len;         /* 0x3A */
           u_int16_t               wi_dat[3];      /* 0x3C */ /* SNAP header */
           u_int16_t               wi_type;        /* 0x42 */
   };
   
   #define WI_802_3_OFFSET         0x2E
   #define WI_802_11_OFFSET        0x44
   #define WI_802_11_OFFSET_RAW    0x3C
   #define WI_802_11_OFFSET_HDR    0x0E
   
   #define WI_STAT_BADCRC          0x0001
   #define WI_STAT_UNDECRYPTABLE   0x0002
   #define WI_STAT_ERRSTAT         0x0003
   #define WI_STAT_MAC_PORT        0x0700
   #define WI_STAT_1042            0x2000  /* RFC1042 encoded */
   #define WI_STAT_TUNNEL          0x4000  /* Bridge-tunnel encoded */
   #define WI_STAT_WMP_MSG         0x6000  /* WaveLAN-II management protocol */
   #define WI_STAT_MGMT            0x8000  /* 802.11b management frames */
   #define WI_RXSTAT_MSG_TYPE      0xE000
   
   #define WI_ENC_TX_802_3         0x00
   #define WI_ENC_TX_802_11        0x11
   #define WI_ENC_TX_MGMT          0x08
   #define WI_ENC_TX_E_II          0x0E
   
   #define WI_ENC_TX_1042          0x00
   #define WI_ENC_TX_TUNNEL        0xF8
   
   #define WI_TXCNTL_MACPORT       0x00FF
   #define WI_TXCNTL_STRUCTTYPE    0xFF00
   #define WI_TXCNTL_TX_EX         0x0004
   #define WI_TXCNTL_TX_OK         0x0002
   #define WI_TXCNTL_NOCRYPT       0x0080
   
   /*
    * SNAP (sub-network access protocol) constants for transmission
    * of IP datagrams over IEEE 802 networks, taken from RFC1042.
    * We need these for the LLC/SNAP header fields in the TX/RX frame
    * structure.
    */
   #define WI_SNAP_K1              0xaa    /* assigned global SAP for SNAP */
   #define WI_SNAP_K2              0x00
   #define WI_SNAP_CONTROL         0x03    /* unnumbered information format */
   #define WI_SNAP_WORD0           (WI_SNAP_K1 | (WI_SNAP_K1 << 8))
   #define WI_SNAP_WORD1           (WI_SNAP_K2 | (WI_SNAP_CONTROL << 8))
   #define WI_SNAPHDR_LEN          0x6
   #define WI_FCS_LEN              0x4

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