testing/wireless/wireless-11.h

   1 /*
   2  * This file define a set of standard wireless extensions
   3  *
   4  * Version :    11      28.3.01
   5  *
   6  * Authors :    Jean Tourrilhes - HPL - <jt@hpl.hp.com>
   7  */
   8
   9 #ifndef _LINUX_WIRELESS_H
  10 #define _LINUX_WIRELESS_H
  11
  12 /************************** DOCUMENTATION **************************/
  13 /*
  14  * Basically, the wireless extensions are for now a set of standard ioctl
  15  * call + /proc/net/wireless
  16  *
  17  * The entry /proc/net/wireless give statistics and information on the
  18  * driver.
  19  * This is better than having each driver having its entry because
  20  * its centralised and we may remove the driver module safely.
  21  *
  22  * Ioctl are used to configure the driver and issue commands.  This is
  23  * better than command line options of insmod because we may want to
  24  * change dynamically (while the driver is running) some parameters.
  25  *
  26  * The ioctl mechanimsm are copied from standard devices ioctl.
  27  * We have the list of command plus a structure descibing the
  28  * data exchanged...
  29  * Note that to add these ioctl, I was obliged to modify :
  30  *      net/core/dev.c (two place + add include)
  31  *      net/ipv4/af_inet.c (one place + add include)
  32  *
  33  * /proc/net/wireless is a copy of /proc/net/dev.
  34  * We have a structure for data passed from the driver to /proc/net/wireless
  35  * Too add this, I've modified :
  36  *      net/core/dev.c (two other places)
  37  *      include/linux/netdevice.h (one place)
  38  *      include/linux/proc_fs.h (one place)
  39  *
  40  * Do not add here things that are redundant with other mechanisms
  41  * (drivers init, ifconfig, /proc/net/dev, ...) and with are not
  42  * wireless specific.
  43  *
  44  * These wireless extensions are not magic : each driver has to provide
  45  * support for them...
  46  *
  47  * IMPORTANT NOTE : As everything in the kernel, this is very much a
  48  * work in progress. Contact me if you have ideas of improvements...
  49  */
  50
  51 /***************************** INCLUDES *****************************/
  52
  53 #include <linux/types.h>                /* for "caddr_t" et al          */
  54 #include <linux/socket.h>               /* for "struct sockaddr" et al  */
  55 #include <linux/if.h>                   /* for IFNAMSIZ and co... */
  56
  57 /**************************** CONSTANTS ****************************/
  58
  59 /* --------------------------- VERSION --------------------------- */
  60 /*
  61  * This constant is used to know the availability of the wireless
  62  * extensions and to know which version of wireless extensions it is
  63  * (there is some stuff that will be added in the future...)
  64  * I just plan to increment with each new version.
  65  */
  66 #define WIRELESS_EXT    11
  67
  68 /*
  69  * Changes :
  70  *
  71  * V2 to V3
  72  * --------
  73  *      Alan Cox start some incompatibles changes. I've integrated a bit more.
  74  *      - Encryption renamed to Encode to avoid US regulation problems
  75  *      - Frequency changed from float to struct to avoid problems on old 386
  76  *
  77  * V3 to V4
  78  * --------
  79  *      - Add sensitivity
  80  *
  81  * V4 to V5
  82  * --------
  83  *      - Missing encoding definitions in range
  84  *      - Access points stuff
  85  *
  86  * V5 to V6
  87  * --------
  88  *      - 802.11 support (ESSID ioctls)
  89  *
  90  * V6 to V7
  91  * --------
  92  *      - define IW_ESSID_MAX_SIZE and IW_MAX_AP
  93  *
  94  * V7 to V8
  95  * --------
  96  *      - Changed my e-mail address
  97  *      - More 802.11 support (nickname, rate, rts, frag)
  98  *      - List index in frequencies
  99  *
 100  * V8 to V9
 101  * --------
 102  *      - Support for 'mode of operation' (ad-hoc, managed...)
 103  *      - Support for unicast and multicast power saving
 104  *      - Change encoding to support larger tokens (>64 bits)
 105  *      - Updated iw_params (disable, flags) and use it for NWID
 106  *      - Extracted iw_point from iwreq for clarity
 107  *
 108  * V9 to V10
 109  * ---------
 110  *      - Add PM capability to range structure
 111  *      - Add PM modifier : MAX/MIN/RELATIVE
 112  *      - Add encoding option : IW_ENCODE_NOKEY
 113  *      - Add TxPower ioctls (work like TxRate)
 114  *
 115  * V10 to V11
 116  * ----------
 117  *      - Add WE version in range (help backward/forward compatibility)
 118  *      - Add retry ioctls (work like PM)
 119  */
 120
 121 /* -------------------------- IOCTL LIST -------------------------- */
 122
 123 /* Basic operations */
 124 #define SIOCSIWNAME     0x8B00          /* Unused */
 125 #define SIOCGIWNAME     0x8B01          /* get name == wireless protocol */
 126 #define SIOCSIWNWID     0x8B02          /* set network id (the cell) */
 127 #define SIOCGIWNWID     0x8B03          /* get network id */
 128 #define SIOCSIWFREQ     0x8B04          /* set channel/frequency (Hz) */
 129 #define SIOCGIWFREQ     0x8B05          /* get channel/frequency (Hz) */
 130 #define SIOCSIWMODE     0x8B06          /* set operation mode */
 131 #define SIOCGIWMODE     0x8B07          /* get operation mode */
 132 #define SIOCSIWSENS     0x8B08          /* set sensitivity (dBm) */
 133 #define SIOCGIWSENS     0x8B09          /* get sensitivity (dBm) */
 134
 135 /* Informative stuff */
 136 #define SIOCSIWRANGE    0x8B0A          /* Unused */
 137 #define SIOCGIWRANGE    0x8B0B          /* Get range of parameters */
 138 #define SIOCSIWPRIV     0x8B0C          /* Unused */
 139 #define SIOCGIWPRIV     0x8B0D          /* get private ioctl interface info */
 140
 141 /* Mobile IP support */
 142 #define SIOCSIWSPY      0x8B10          /* set spy addresses */
 143 #define SIOCGIWSPY      0x8B11          /* get spy info (quality of link) */
 144
 145 /* Access Point manipulation */
 146 #define SIOCSIWAP       0x8B14          /* set access point MAC addresses */
 147 #define SIOCGIWAP       0x8B15          /* get access point MAC addresses */
 148 #define SIOCGIWAPLIST   0x8B17          /* get list of access point in range */
 149
 150 /* 802.11 specific support */
 151 #define SIOCSIWESSID    0x8B1A          /* set ESSID (network name) */
 152 #define SIOCGIWESSID    0x8B1B          /* get ESSID */
 153 #define SIOCSIWNICKN    0x8B1C          /* set node name/nickname */
 154 #define SIOCGIWNICKN    0x8B1D          /* get node name/nickname */
 155 /* As the ESSID and NICKN are strings up to 32 bytes long, it doesn't fit
 156  * within the 'iwreq' structure, so we need to use the 'data' member to
 157  * point to a string in user space, like it is done for RANGE...
 158  * The "flags" member indicate if the ESSID is active or not (promiscuous).
 159  */
 160
 161 /* Other parameters useful in 802.11 and some other devices */
 162 #define SIOCSIWRATE     0x8B20          /* set default bit rate (bps) */
 163 #define SIOCGIWRATE     0x8B21          /* get default bit rate (bps) */
 164 #define SIOCSIWRTS      0x8B22          /* set RTS/CTS threshold (bytes) */
 165 #define SIOCGIWRTS      0x8B23          /* get RTS/CTS threshold (bytes) */
 166 #define SIOCSIWFRAG     0x8B24          /* set fragmentation thr (bytes) */
 167 #define SIOCGIWFRAG     0x8B25          /* get fragmentation thr (bytes) */
 168 #define SIOCSIWTXPOW    0x8B26          /* set transmit power (dBm) */
 169 #define SIOCGIWTXPOW    0x8B27          /* get transmit power (dBm) */
 170 #define SIOCSIWRETRY    0x8B28          /* set retry limits and lifetime */
 171 #define SIOCGIWRETRY    0x8B29          /* get retry limits and lifetime */
 172
 173 /* Encoding stuff (scrambling, hardware security, WEP...) */
 174 #define SIOCSIWENCODE   0x8B2A          /* set encoding token & mode */
 175 #define SIOCGIWENCODE   0x8B2B          /* get encoding token & mode */
 176 /* Power saving stuff (power management, unicast and multicast) */
 177 #define SIOCSIWPOWER    0x8B2C          /* set Power Management settings */
 178 #define SIOCGIWPOWER    0x8B2D          /* get Power Management settings */
 179
 180 /* ------------------------- IOCTL STUFF ------------------------- */
 181
 182 /* The first and the last (range) */
 183 #define SIOCIWFIRST     0x8B00
 184 #define SIOCIWLAST      0x8B30
 185
 186 /* Even : get (world access), odd : set (root access) */
 187 #define IW_IS_SET(cmd)  (!((cmd) & 0x1))
 188 #define IW_IS_GET(cmd)  ((cmd) & 0x1)
 189
 190 /* ------------------------- PRIVATE INFO ------------------------- */
 191 /*
 192  * The following is used with SIOCGIWPRIV. It allow a driver to define
 193  * the interface (name, type of data) for its private ioctl.
 194  * Privates ioctl are SIOCDEVPRIVATE -> SIOCDEVPRIVATE + 0xF
 195  */
 196
 197 #define IW_PRIV_TYPE_MASK       0x7000  /* Type of arguments */
 198 #define IW_PRIV_TYPE_NONE       0x0000
 199 #define IW_PRIV_TYPE_BYTE       0x1000  /* Char as number */
 200 #define IW_PRIV_TYPE_CHAR       0x2000  /* Char as character */
 201 #define IW_PRIV_TYPE_INT        0x4000  /* 32 bits int */
 202 #define IW_PRIV_TYPE_FLOAT      0x5000
 203
 204 #define IW_PRIV_SIZE_FIXED      0x0800  /* Variable or fixed nuber of args */
 205
 206 #define IW_PRIV_SIZE_MASK       0x07FF  /* Max number of those args */
 207
 208 /*
 209  * Note : if the number of args is fixed and the size < 16 octets,
 210  * instead of passing a pointer we will put args in the iwreq struct...
 211  */
 212
 213 /* ----------------------- OTHER CONSTANTS ----------------------- */
 214
 215 /* Maximum frequencies in the range struct */
 216 #define IW_MAX_FREQUENCIES      16
 217 /* Note : if you have something like 80 frequencies,
 218  * don't increase this constant and don't fill the frequency list.
 219  * The user will be able to set by channel anyway... */
 220
 221 /* Maximum bit rates in the range struct */
 222 #define IW_MAX_BITRATES         8
 223
 224 /* Maximum tx powers in the range struct */
 225 #define IW_MAX_TXPOWER          8
 226
 227 /* Maximum of address that you may set with SPY */
 228 #define IW_MAX_SPY              8
 229
 230 /* Maximum of address that you may get in the
 231    list of access points in range */
 232 #define IW_MAX_AP               8
 233
 234 /* Maximum size of the ESSID and NICKN strings */
 235 #define IW_ESSID_MAX_SIZE       32
 236
 237 /* Modes of operation */
 238 #define IW_MODE_AUTO    0       /* Let the driver decides */
 239 #define IW_MODE_ADHOC   1       /* Single cell network */
 240 #define IW_MODE_INFRA   2       /* Multi cell network, roaming, ... */
 241 #define IW_MODE_MASTER  3       /* Synchronisation master or Access Point */
 242 #define IW_MODE_REPEAT  4       /* Wireless Repeater (forwarder) */
 243 #define IW_MODE_SECOND  5       /* Secondary master/repeater (backup) */
 244
 245 /* Maximum number of size of encoding token available
 246  * they are listed in the range structure */
 247 #define IW_MAX_ENCODING_SIZES   8
 248
 249 /* Maximum size of the encoding token in bytes */
 250 #define IW_ENCODING_TOKEN_MAX   32      /* 256 bits (for now) */
 251
 252 /* Flags for encoding (along with the token) */
 253 #define IW_ENCODE_INDEX         0x00FF  /* Token index (if needed) */
 254 #define IW_ENCODE_FLAGS         0xFF00  /* Flags defined below */
 255 #define IW_ENCODE_MODE          0xF000  /* Modes defined below */
 256 #define IW_ENCODE_DISABLED      0x8000  /* Encoding disabled */
 257 #define IW_ENCODE_ENABLED       0x0000  /* Encoding enabled */
 258 #define IW_ENCODE_RESTRICTED    0x4000  /* Refuse non-encoded packets */
 259 #define IW_ENCODE_OPEN          0x2000  /* Accept non-encoded packets */
 260 #define IW_ENCODE_NOKEY         0x0800  /* Key is write only, so not present */
 261
 262 /* Power management flags available (along with the value, if any) */
 263 #define IW_POWER_ON             0x0000  /* No details... */
 264 #define IW_POWER_TYPE           0xF000  /* Type of parameter */
 265 #define IW_POWER_PERIOD         0x1000  /* Value is a period/duration of  */
 266 #define IW_POWER_TIMEOUT        0x2000  /* Value is a timeout (to go asleep) */
 267 #define IW_POWER_MODE           0x0F00  /* Power Management mode */
 268 #define IW_POWER_UNICAST_R      0x0100  /* Receive only unicast messages */
 269 #define IW_POWER_MULTICAST_R    0x0200  /* Receive only multicast messages */
 270 #define IW_POWER_ALL_R          0x0300  /* Receive all messages though PM */
 271 #define IW_POWER_FORCE_S        0x0400  /* Force PM procedure for sending unicast */
 272 #define IW_POWER_REPEATER       0x0800  /* Repeat broadcast messages in PM period */
 273 #define IW_POWER_MODIFIER       0x000F  /* Modify a parameter */
 274 #define IW_POWER_MIN            0x0001  /* Value is a minimum  */
 275 #define IW_POWER_MAX            0x0002  /* Value is a maximum */
 276 #define IW_POWER_RELATIVE       0x0004  /* Value is not in seconds/ms/us */
 277
 278 /* Transmit Power flags available */
 279 #define IW_TXPOW_DBM            0x0000  /* Value is in dBm */
 280 #define IW_TXPOW_MWATT          0x0001  /* Value is in mW */
 281
 282 /* Retry limits and lifetime flags available */
 283 #define IW_RETRY_ON             0x0000  /* No details... */
 284 #define IW_RETRY_TYPE           0xF000  /* Type of parameter */
 285 #define IW_RETRY_LIMIT          0x1000  /* Maximum number of retries*/
 286 #define IW_RETRY_LIFETIME       0x2000  /* Maximum duration of retries in us */
 287 #define IW_RETRY_MODIFIER       0x000F  /* Modify a parameter */
 288 #define IW_RETRY_MIN            0x0001  /* Value is a minimum  */
 289 #define IW_RETRY_MAX            0x0002  /* Value is a maximum */
 290 #define IW_RETRY_RELATIVE       0x0004  /* Value is not in seconds/ms/us */
 291
 292 /****************************** TYPES ******************************/
 293
 294 /* --------------------------- SUBTYPES --------------------------- */
 295 /*
 296  *      Generic format for most parameters that fit in an int
 297  */
 298 struct  iw_param
 299 {
 300   __s32         value;          /* The value of the parameter itself */
 301   __u8          fixed;          /* Hardware should not use auto select */
 302   __u8          disabled;       /* Disable the feature */
 303   __u16         flags;          /* Various specifc flags (if any) */
 304 };
 305
 306 /*
 307  *      For all data larger than 16 octets, we need to use a
 308  *      pointer to memory allocated in user space.
 309  */
 310 struct  iw_point
 311 {
 312   caddr_t       pointer;        /* Pointer to the data  (in user space) */
 313   __u16         length;         /* number of fields or size in bytes */
 314   __u16         flags;          /* Optional params */
 315 };
 316
 317 /*
 318  *      A frequency
 319  *      For numbers lower than 10^9, we encode the number in 'm' and
 320  *      set 'e' to 0
 321  *      For number greater than 10^9, we divide it by the lowest power
 322  *      of 10 to get 'm' lower than 10^9, with 'm'= f / (10^'e')...
 323  *      The power of 10 is in 'e', the result of the division is in 'm'.
 324  */
 325 struct  iw_freq
 326 {
 327         __u32           m;              /* Mantissa */
 328         __u16           e;              /* Exponent */
 329         __u8            i;              /* List index (when in range struct) */
 330 };
 331
 332 /*
 333  *      Quality of the link
 334  */
 335 struct  iw_quality
 336 {
 337         __u8            qual;           /* link quality (%retries, SNR or better...) */
 338         __u8            level;          /* signal level */
 339         __u8            noise;          /* noise level */
 340         __u8            updated;        /* Flags to know if updated */
 341 };
 342
 343 /*
 344  *      Packet discarded in the wireless adapter due to
 345  *      "wireless" specific problems...
 346  */
 347 struct  iw_discarded
 348 {
 349         __u32           nwid;           /* Wrong nwid */
 350         __u32           code;           /* Unable to code/decode */
 351         __u32           misc;           /* Others cases */
 352 };
 353
 354 /* ------------------------ WIRELESS STATS ------------------------ */
 355 /*
 356  * Wireless statistics (used for /proc/net/wireless)
 357  */
 358 struct  iw_statistics
 359 {
 360         __u16           status;         /* Status
 361                                          * - device dependent for now */
 362
 363         struct iw_quality       qual;           /* Quality of the link
 364                                                  * (instant/mean/max) */
 365         struct iw_discarded     discard;        /* Packet discarded counts */
 366 };
 367
 368 /* ------------------------ IOCTL REQUEST ------------------------ */
 369 /*
 370  * The structure to exchange data for ioctl.
 371  * This structure is the same as 'struct ifreq', but (re)defined for
 372  * convenience...
 373  *
 374  * Note that it should fit on the same memory footprint !
 375  * You should check this when increasing the above structures (16 octets)
 376  * 16 octets = 128 bits. Warning, pointers might be 64 bits wide...
 377  */
 378 struct  iwreq
 379 {
 380         union
 381         {
 382                 char    ifrn_name[IFNAMSIZ];    /* if name, e.g. "eth0" */
 383         } ifr_ifrn;
 384
 385         /* Data part */
 386         union
 387         {
 388                 /* Config - generic */
 389                 char            name[IFNAMSIZ];
 390                 /* Name : used to verify the presence of  wireless extensions.
 391                  * Name of the protocol/provider... */
 392
 393                 struct iw_point essid;  /* Extended network name */
 394                 struct iw_param nwid;   /* network id (or domain - the cell) */
 395                 struct iw_freq  freq;   /* frequency or channel :
 396                                          * 0-1000 = channel
 397                                          * > 1000 = frequency in Hz */
 398
 399                 struct iw_param sens;           /* signal level threshold */
 400                 struct iw_param bitrate;        /* default bit rate */
 401                 struct iw_param txpower;        /* default transmit power */
 402                 struct iw_param rts;            /* RTS threshold threshold */
 403                 struct iw_param frag;           /* Fragmentation threshold */
 404                 __u32           mode;           /* Operation mode */
 405                 struct iw_param retry;          /* Retry limits & lifetime */
 406
 407                 struct iw_point encoding;       /* Encoding stuff : tokens */
 408                 struct iw_param power;          /* PM duration/timeout */
 409
 410                 struct sockaddr ap_addr;        /* Access point address */
 411
 412                 struct iw_point data;           /* Other large parameters */
 413         }       u;
 414 };
 415
 416 /* -------------------------- IOCTL DATA -------------------------- */
 417 /*
 418  *      For those ioctl which want to exchange mode data that what could
 419  *      fit in the above structure...
 420  */
 421
 422 /*
 423  *      Range of parameters
 424  */
 425
 426 struct  iw_range
 427 {
 428         /* Informative stuff (to choose between different interface) */
 429         __u32           throughput;     /* To give an idea... */
 430         /* In theory this value should be the maximum benchmarked
 431          * TCP/IP throughput, because with most of these devices the
 432          * bit rate is meaningless (overhead an co) to estimate how
 433          * fast the connection will go and pick the fastest one.
 434          * I suggest people to play with Netperf or any benchmark...
 435          */
 436
 437         /* NWID (or domain id) */
 438         __u32           min_nwid;       /* Minimal NWID we are able to set */
 439         __u32           max_nwid;       /* Maximal NWID we are able to set */
 440
 441         /* Frequency */
 442         __u16           num_channels;   /* Number of channels [0; num - 1] */
 443         __u8            num_frequency;  /* Number of entry in the list */
 444         struct iw_freq  freq[IW_MAX_FREQUENCIES];       /* list */
 445         /* Note : this frequency list doesn't need to fit channel numbers */
 446
 447         /* signal level threshold range */
 448         __s32   sensitivity;
 449
 450         /* Quality of link & SNR stuff */
 451         struct iw_quality       max_qual;       /* Quality of the link */
 452
 453         /* Rates */
 454         __u8            num_bitrates;   /* Number of entries in the list */
 455         __s32           bitrate[IW_MAX_BITRATES];       /* list, in bps */
 456
 457         /* RTS threshold */
 458         __s32           min_rts;        /* Minimal RTS threshold */
 459         __s32           max_rts;        /* Maximal RTS threshold */
 460
 461         /* Frag threshold */
 462         __s32           min_frag;       /* Minimal frag threshold */
 463         __s32           max_frag;       /* Maximal frag threshold */
 464
 465         /* Power Management duration & timeout */
 466         __s32           min_pmp;        /* Minimal PM period */
 467         __s32           max_pmp;        /* Maximal PM period */
 468         __s32           min_pmt;        /* Minimal PM timeout */
 469         __s32           max_pmt;        /* Maximal PM timeout */
 470         __u16           pmp_flags;      /* How to decode max/min PM period */
 471         __u16           pmt_flags;      /* How to decode max/min PM timeout */
 472         __u16           pm_capa;        /* What PM options are supported */
 473
 474         /* Encoder stuff */
 475         __u16   encoding_size[IW_MAX_ENCODING_SIZES];   /* Different token sizes */
 476         __u8    num_encoding_sizes;     /* Number of entry in the list */
 477         __u8    max_encoding_tokens;    /* Max number of tokens */
 478
 479         /* Transmit power */
 480         __u16           txpower_capa;   /* What options are supported */
 481         __u8            num_txpower;    /* Number of entries in the list */
 482         __s32           txpower[IW_MAX_TXPOWER];        /* list, in bps */
 483
 484         /* Wireless Extension version info */
 485         __u8            we_version_compiled;    /* Must be WIRELESS_EXT */
 486         __u8            we_version_source;      /* Last update of source */
 487
 488         /* Retry limits and lifetime */
 489         __u16           retry_capa;     /* What retry options are supported */
 490         __u16           retry_flags;    /* How to decode max/min retry limit */
 491         __u16           r_time_flags;   /* How to decode max/min retry life */
 492         __s32           min_retry;      /* Minimal number of retries */
 493         __s32           max_retry;      /* Maximal number of retries */
 494         __s32           min_r_time;     /* Minimal retry lifetime */
 495         __s32           max_r_time;     /* Maximal retry lifetime */
 496 };
 497
 498 /*
 499  * Private ioctl interface information
 500  */
 501
 502 struct  iw_priv_args
 503 {
 504         __u32           cmd;            /* Number of the ioctl to issue */
 505         __u16           set_args;       /* Type and number of args */
 506         __u16           get_args;       /* Type and number of args */
 507         char            name[IFNAMSIZ]; /* Name of the extension */
 508 };
 509
 510 #endif  /* _LINUX_WIRELESS_H */