drivers/net/wireless/mac80211_hwsim.h

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #ifndef __MAC80211_HWSIM_H
  12 #define __MAC80211_HWSIM_H
  13
  14 /**
  15  * enum hwsim_tx_control_flags - flags to describe transmission info/status
  16  *
  17  * These flags are used to give the wmediumd extra information in order to
  18  * modify its behavior for each frame
  19  *
  20  * @HWSIM_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame.
  21  * @HWSIM_TX_CTL_NO_ACK: tell the wmediumd not to wait for an ack
  22  * @HWSIM_TX_STAT_ACK: Frame was acknowledged
  23  *
  24  */
  25 enum hwsim_tx_control_flags {
  26         HWSIM_TX_CTL_REQ_TX_STATUS              = BIT(0),
  27         HWSIM_TX_CTL_NO_ACK                     = BIT(1),
  28         HWSIM_TX_STAT_ACK                       = BIT(2),
  29 };
  30
  31 /**
  32  * DOC: Frame transmission/registration support
  33  *
  34  * Frame transmission and registration support exists to allow userspace
  35  * entities such as wmediumd to receive and process all broadcasted
  36  * frames from a mac80211_hwsim radio device.
  37  *
  38  * This allow user space applications to decide if the frame should be
  39  * dropped or not and implement a wireless medium simulator at user space.
  40  *
  41  * Registration is done by sending a register message to the driver and
  42  * will be automatically unregistered if the user application doesn't
  43  * responds to sent frames.
  44  * Once registered the user application has to take responsibility of
  45  * broadcasting the frames to all listening mac80211_hwsim radio
  46  * interfaces.
  47  *
  48  * For more technical details, see the corresponding command descriptions
  49  * below.
  50  */
  51
  52 /**
  53  * enum hwsim_commands - supported hwsim commands
  54  *
  55  * @HWSIM_CMD_UNSPEC: unspecified command to catch errors
  56  *
  57  * @HWSIM_CMD_REGISTER: request to register and received all broadcasted
  58  *      frames by any mac80211_hwsim radio device.
  59  * @HWSIM_CMD_FRAME: send/receive a broadcasted frame from/to kernel/user
  60  *      space, uses:
  61  *      %HWSIM_ATTR_ADDR_TRANSMITTER, %HWSIM_ATTR_ADDR_RECEIVER,
  62  *      %HWSIM_ATTR_FRAME, %HWSIM_ATTR_FLAGS, %HWSIM_ATTR_RX_RATE,
  63  *      %HWSIM_ATTR_SIGNAL, %HWSIM_ATTR_COOKIE, %HWSIM_ATTR_FREQ (optional)
  64  * @HWSIM_CMD_TX_INFO_FRAME: Transmission info report from user space to
  65  *      kernel, uses:
  66  *      %HWSIM_ATTR_ADDR_TRANSMITTER, %HWSIM_ATTR_FLAGS,
  67  *      %HWSIM_ATTR_TX_INFO, %WSIM_ATTR_TX_INFO_FLAGS,
  68  *      %HWSIM_ATTR_SIGNAL, %HWSIM_ATTR_COOKIE
  69  * @HWSIM_CMD_NEW_RADIO: create a new radio with the given parameters,
  70  *      returns the radio ID (>= 0) or negative on errors, if successful
  71  *      then multicast the result, uses optional parameter:
  72  *      %HWSIM_ATTR_REG_STRICT_REG, %HWSIM_ATTR_SUPPORT_P2P_DEVICE,
  73  *      %HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE, %HWSIM_ATTR_CHANNELS,
  74  *      %HWSIM_ATTR_NO_VIF, %HWSIM_ATTR_RADIO_NAME, %HWSIM_ATTR_USE_CHANCTX,
  75  *      %HWSIM_ATTR_REG_HINT_ALPHA2, %HWSIM_ATTR_REG_CUSTOM_REG,
  76  *      %HWSIM_ATTR_PERM_ADDR
  77  * @HWSIM_CMD_DEL_RADIO: destroy a radio, reply is multicasted
  78  * @HWSIM_CMD_GET_RADIO: fetch information about existing radios, uses:
  79  *      %HWSIM_ATTR_RADIO_ID
  80  * @__HWSIM_CMD_MAX: enum limit
  81  */
  82 enum {
  83         HWSIM_CMD_UNSPEC,
  84         HWSIM_CMD_REGISTER,
  85         HWSIM_CMD_FRAME,
  86         HWSIM_CMD_TX_INFO_FRAME,
  87         HWSIM_CMD_NEW_RADIO,
  88         HWSIM_CMD_DEL_RADIO,
  89         HWSIM_CMD_GET_RADIO,
  90         __HWSIM_CMD_MAX,
  91 };
  92 #define HWSIM_CMD_MAX (_HWSIM_CMD_MAX - 1)
  93
  94 #define HWSIM_CMD_CREATE_RADIO   HWSIM_CMD_NEW_RADIO
  95 #define HWSIM_CMD_DESTROY_RADIO  HWSIM_CMD_DEL_RADIO
  96
  97 /**
  98  * enum hwsim_attrs - hwsim netlink attributes
  99  *
 100  * @HWSIM_ATTR_UNSPEC: unspecified attribute to catch errors
 101  *
 102  * @HWSIM_ATTR_ADDR_RECEIVER: MAC address of the radio device that
 103  *      the frame is broadcasted to
 104  * @HWSIM_ATTR_ADDR_TRANSMITTER: MAC address of the radio device that
 105  *      the frame was broadcasted from
 106  * @HWSIM_ATTR_FRAME: Data array
 107  * @HWSIM_ATTR_FLAGS: mac80211 transmission flags, used to process
 108         properly the frame at user space
 109  * @HWSIM_ATTR_RX_RATE: estimated rx rate index for this frame at user
 110         space
 111  * @HWSIM_ATTR_SIGNAL: estimated RX signal for this frame at user
 112         space
 113  * @HWSIM_ATTR_TX_INFO: ieee80211_tx_rate array
 114  * @HWSIM_ATTR_COOKIE: sk_buff cookie to identify the frame
 115  * @HWSIM_ATTR_CHANNELS: u32 attribute used with the %HWSIM_CMD_CREATE_RADIO
 116  *      command giving the number of channels supported by the new radio
 117  * @HWSIM_ATTR_RADIO_ID: u32 attribute used with %HWSIM_CMD_DESTROY_RADIO
 118  *      only to destroy a radio
 119  * @HWSIM_ATTR_REG_HINT_ALPHA2: alpha2 for regulatoro driver hint
 120  *      (nla string, length 2)
 121  * @HWSIM_ATTR_REG_CUSTOM_REG: custom regulatory domain index (u32 attribute)
 122  * @HWSIM_ATTR_REG_STRICT_REG: request REGULATORY_STRICT_REG (flag attribute)
 123  * @HWSIM_ATTR_SUPPORT_P2P_DEVICE: support P2P Device virtual interface (flag)
 124  * @HWSIM_ATTR_USE_CHANCTX: used with the %HWSIM_CMD_CREATE_RADIO
 125  *      command to force use of channel contexts even when only a
 126  *      single channel is supported
 127  * @HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE: used with the %HWSIM_CMD_CREATE_RADIO
 128  *      command to force radio removal when process that created the radio dies
 129  * @HWSIM_ATTR_RADIO_NAME: Name of radio, e.g. phy666
 130  * @HWSIM_ATTR_NO_VIF:  Do not create vif (wlanX) when creating radio.
 131  * @HWSIM_ATTR_FREQ: Frequency at which packet is transmitted or received.
 132  * @HWSIM_ATTR_TX_INFO_FLAGS: additional flags for corresponding
 133  *      rates of %HWSIM_ATTR_TX_INFO
 134  * @HWSIM_ATTR_PERM_ADDR: permanent mac address of new radio
 135  * @__HWSIM_ATTR_MAX: enum limit
 136  */
 137
 138
 139 enum {
 140         HWSIM_ATTR_UNSPEC,
 141         HWSIM_ATTR_ADDR_RECEIVER,
 142         HWSIM_ATTR_ADDR_TRANSMITTER,
 143         HWSIM_ATTR_FRAME,
 144         HWSIM_ATTR_FLAGS,
 145         HWSIM_ATTR_RX_RATE,
 146         HWSIM_ATTR_SIGNAL,
 147         HWSIM_ATTR_TX_INFO,
 148         HWSIM_ATTR_COOKIE,
 149         HWSIM_ATTR_CHANNELS,
 150         HWSIM_ATTR_RADIO_ID,
 151         HWSIM_ATTR_REG_HINT_ALPHA2,
 152         HWSIM_ATTR_REG_CUSTOM_REG,
 153         HWSIM_ATTR_REG_STRICT_REG,
 154         HWSIM_ATTR_SUPPORT_P2P_DEVICE,
 155         HWSIM_ATTR_USE_CHANCTX,
 156         HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE,
 157         HWSIM_ATTR_RADIO_NAME,
 158         HWSIM_ATTR_NO_VIF,
 159         HWSIM_ATTR_FREQ,
 160         HWSIM_ATTR_PAD,
 161         HWSIM_ATTR_TX_INFO_FLAGS,
 162         HWSIM_ATTR_PERM_ADDR,
 163         __HWSIM_ATTR_MAX,
 164 };
 165 #define HWSIM_ATTR_MAX (__HWSIM_ATTR_MAX - 1)
 166
 167 /**
 168  * struct hwsim_tx_rate - rate selection/status
 169  *
 170  * @idx: rate index to attempt to send with
 171  * @count: number of tries in this rate before going to the next rate
 172  *
 173  * A value of -1 for @idx indicates an invalid rate and, if used
 174  * in an array of retry rates, that no more rates should be tried.
 175  *
 176  * When used for transmit status reporting, the driver should
 177  * always report the rate and number of retries used.
 178  *
 179  */
 180 struct hwsim_tx_rate {
 181         s8 idx;
 182         u8 count;
 183 } __packed;
 184
 185 /**
 186  * enum hwsim_tx_rate_flags - per-rate flags set by the rate control algorithm.
 187  *      Inspired by structure mac80211_rate_control_flags. New flags may be
 188  *      appended, but old flags not deleted, to keep compatibility for
 189  *      userspace.
 190  *
 191  * These flags are set by the Rate control algorithm for each rate during tx,
 192  * in the @flags member of struct ieee80211_tx_rate.
 193  *
 194  * @MAC80211_HWSIM_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate.
 195  * @MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required.
 196  *      This is set if the current BSS requires ERP protection.
 197  * @MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE: Use short preamble.
 198  * @MAC80211_HWSIM_TX_RC_MCS: HT rate.
 199  * @MAC80211_HWSIM_TX_RC_VHT_MCS: VHT MCS rate, in this case the idx field is
 200  *      split into a higher 4 bits (Nss) and lower 4 bits (MCS number)
 201  * @MAC80211_HWSIM_TX_RC_GREEN_FIELD: Indicates whether this rate should be used
 202  *      in Greenfield mode.
 203  * @MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be
 204  *      40 MHz.
 205  * @MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH: Indicates 80 MHz transmission
 206  * @MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH: Indicates 160 MHz transmission
 207  *      (80+80 isn't supported yet)
 208  * @MAC80211_HWSIM_TX_RC_DUP_DATA: The frame should be transmitted on both of
 209  *      the adjacent 20 MHz channels, if the current channel type is
 210  *      NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS.
 211  * @MAC80211_HWSIM_TX_RC_SHORT_GI: Short Guard interval should be used for this
 212  *      rate.
 213  */
 214 enum hwsim_tx_rate_flags {
 215         MAC80211_HWSIM_TX_RC_USE_RTS_CTS                = BIT(0),
 216         MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT            = BIT(1),
 217         MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE = BIT(2),
 218
 219         /* rate index is an HT/VHT MCS instead of an index */
 220         MAC80211_HWSIM_TX_RC_MCS                        = BIT(3),
 221         MAC80211_HWSIM_TX_RC_GREEN_FIELD                = BIT(4),
 222         MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH               = BIT(5),
 223         MAC80211_HWSIM_TX_RC_DUP_DATA           = BIT(6),
 224         MAC80211_HWSIM_TX_RC_SHORT_GI           = BIT(7),
 225         MAC80211_HWSIM_TX_RC_VHT_MCS                    = BIT(8),
 226         MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH               = BIT(9),
 227         MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH              = BIT(10),
 228 };
 229
 230 /**
 231  * struct hwsim_tx_rate - rate selection/status
 232  *
 233  * @idx: rate index to attempt to send with
 234  * @count: number of tries in this rate before going to the next rate
 235  *
 236  * A value of -1 for @idx indicates an invalid rate and, if used
 237  * in an array of retry rates, that no more rates should be tried.
 238  *
 239  * When used for transmit status reporting, the driver should
 240  * always report the rate and number of retries used.
 241  *
 242  */
 243 struct hwsim_tx_rate_flag {
 244         s8 idx;
 245         u16 flags;
 246 } __packed;
 247 #endif /* __MAC80211_HWSIM_H */