1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211 4 * Copyright (c) 2008, Jouni Malinen <j@w1.fi> 5 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com> 6 * Copyright (C) 2020 Intel Corporation 7 */ 8 9 #ifndef __MAC80211_HWSIM_H 10 #define __MAC80211_HWSIM_H 11 12 /** 13 * enum hwsim_tx_control_flags - flags to describe transmission info/status 14 * 15 * These flags are used to give the wmediumd extra information in order to 16 * modify its behavior for each frame 17 * 18 * @HWSIM_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame. 19 * @HWSIM_TX_CTL_NO_ACK: tell the wmediumd not to wait for an ack 20 * @HWSIM_TX_STAT_ACK: Frame was acknowledged 21 * 22 */ 23 enum hwsim_tx_control_flags { 24 HWSIM_TX_CTL_REQ_TX_STATUS = BIT(0), 25 HWSIM_TX_CTL_NO_ACK = BIT(1), 26 HWSIM_TX_STAT_ACK = BIT(2), 27 }; 28 29 /** 30 * DOC: Frame transmission/registration support 31 * 32 * Frame transmission and registration support exists to allow userspace 33 * entities such as wmediumd to receive and process all broadcasted 34 * frames from a mac80211_hwsim radio device. 35 * 36 * This allow user space applications to decide if the frame should be 37 * dropped or not and implement a wireless medium simulator at user space. 38 * 39 * Registration is done by sending a register message to the driver and 40 * will be automatically unregistered if the user application doesn't 41 * responds to sent frames. 42 * Once registered the user application has to take responsibility of 43 * broadcasting the frames to all listening mac80211_hwsim radio 44 * interfaces. 45 * 46 * For more technical details, see the corresponding command descriptions 47 * below. 48 */ 49 50 /** 51 * enum hwsim_commands - supported hwsim commands 52 * 53 * @HWSIM_CMD_UNSPEC: unspecified command to catch errors 54 * 55 * @HWSIM_CMD_REGISTER: request to register and received all broadcasted 56 * frames by any mac80211_hwsim radio device. 57 * @HWSIM_CMD_FRAME: send/receive a broadcasted frame from/to kernel/user 58 * space, uses: 59 * %HWSIM_ATTR_ADDR_TRANSMITTER, %HWSIM_ATTR_ADDR_RECEIVER, 60 * %HWSIM_ATTR_FRAME, %HWSIM_ATTR_FLAGS, %HWSIM_ATTR_RX_RATE, 61 * %HWSIM_ATTR_SIGNAL, %HWSIM_ATTR_COOKIE, %HWSIM_ATTR_FREQ (optional) 62 * @HWSIM_CMD_TX_INFO_FRAME: Transmission info report from user space to 63 * kernel, uses: 64 * %HWSIM_ATTR_ADDR_TRANSMITTER, %HWSIM_ATTR_FLAGS, 65 * %HWSIM_ATTR_TX_INFO, %WSIM_ATTR_TX_INFO_FLAGS, 66 * %HWSIM_ATTR_SIGNAL, %HWSIM_ATTR_COOKIE 67 * @HWSIM_CMD_NEW_RADIO: create a new radio with the given parameters, 68 * returns the radio ID (>= 0) or negative on errors, if successful 69 * then multicast the result, uses optional parameter: 70 * %HWSIM_ATTR_REG_STRICT_REG, %HWSIM_ATTR_SUPPORT_P2P_DEVICE, 71 * %HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE, %HWSIM_ATTR_CHANNELS, 72 * %HWSIM_ATTR_NO_VIF, %HWSIM_ATTR_RADIO_NAME, %HWSIM_ATTR_USE_CHANCTX, 73 * %HWSIM_ATTR_REG_HINT_ALPHA2, %HWSIM_ATTR_REG_CUSTOM_REG, 74 * %HWSIM_ATTR_PERM_ADDR 75 * @HWSIM_CMD_DEL_RADIO: destroy a radio, reply is multicasted 76 * @HWSIM_CMD_GET_RADIO: fetch information about existing radios, uses: 77 * %HWSIM_ATTR_RADIO_ID 78 * @HWSIM_CMD_ADD_MAC_ADDR: add a receive MAC address (given in the 79 * %HWSIM_ATTR_ADDR_RECEIVER attribute) to a device identified by 80 * %HWSIM_ATTR_ADDR_TRANSMITTER. This lets wmediumd forward frames 81 * to this receiver address for a given station. 82 * @HWSIM_CMD_DEL_MAC_ADDR: remove the MAC address again, the attributes 83 * are the same as to @HWSIM_CMD_ADD_MAC_ADDR. 84 * @__HWSIM_CMD_MAX: enum limit 85 */ 86 enum { 87 HWSIM_CMD_UNSPEC, 88 HWSIM_CMD_REGISTER, 89 HWSIM_CMD_FRAME, 90 HWSIM_CMD_TX_INFO_FRAME, 91 HWSIM_CMD_NEW_RADIO, 92 HWSIM_CMD_DEL_RADIO, 93 HWSIM_CMD_GET_RADIO, 94 HWSIM_CMD_ADD_MAC_ADDR, 95 HWSIM_CMD_DEL_MAC_ADDR, 96 __HWSIM_CMD_MAX, 97 }; 98 #define HWSIM_CMD_MAX (_HWSIM_CMD_MAX - 1) 99 100 #define HWSIM_CMD_CREATE_RADIO HWSIM_CMD_NEW_RADIO 101 #define HWSIM_CMD_DESTROY_RADIO HWSIM_CMD_DEL_RADIO 102 103 /** 104 * enum hwsim_attrs - hwsim netlink attributes 105 * 106 * @HWSIM_ATTR_UNSPEC: unspecified attribute to catch errors 107 * 108 * @HWSIM_ATTR_ADDR_RECEIVER: MAC address of the radio device that 109 * the frame is broadcasted to 110 * @HWSIM_ATTR_ADDR_TRANSMITTER: MAC address of the radio device that 111 * the frame was broadcasted from 112 * @HWSIM_ATTR_FRAME: Data array 113 * @HWSIM_ATTR_FLAGS: mac80211 transmission flags, used to process 114 properly the frame at user space 115 * @HWSIM_ATTR_RX_RATE: estimated rx rate index for this frame at user 116 space 117 * @HWSIM_ATTR_SIGNAL: estimated RX signal for this frame at user 118 space 119 * @HWSIM_ATTR_TX_INFO: ieee80211_tx_rate array 120 * @HWSIM_ATTR_COOKIE: sk_buff cookie to identify the frame 121 * @HWSIM_ATTR_CHANNELS: u32 attribute used with the %HWSIM_CMD_CREATE_RADIO 122 * command giving the number of channels supported by the new radio 123 * @HWSIM_ATTR_RADIO_ID: u32 attribute used with %HWSIM_CMD_DESTROY_RADIO 124 * only to destroy a radio 125 * @HWSIM_ATTR_REG_HINT_ALPHA2: alpha2 for regulatoro driver hint 126 * (nla string, length 2) 127 * @HWSIM_ATTR_REG_CUSTOM_REG: custom regulatory domain index (u32 attribute) 128 * @HWSIM_ATTR_REG_STRICT_REG: request REGULATORY_STRICT_REG (flag attribute) 129 * @HWSIM_ATTR_SUPPORT_P2P_DEVICE: support P2P Device virtual interface (flag) 130 * @HWSIM_ATTR_USE_CHANCTX: used with the %HWSIM_CMD_CREATE_RADIO 131 * command to force use of channel contexts even when only a 132 * single channel is supported 133 * @HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE: used with the %HWSIM_CMD_CREATE_RADIO 134 * command to force radio removal when process that created the radio dies 135 * @HWSIM_ATTR_RADIO_NAME: Name of radio, e.g. phy666 136 * @HWSIM_ATTR_NO_VIF: Do not create vif (wlanX) when creating radio. 137 * @HWSIM_ATTR_FREQ: Frequency at which packet is transmitted or received. 138 * @HWSIM_ATTR_TX_INFO_FLAGS: additional flags for corresponding 139 * rates of %HWSIM_ATTR_TX_INFO 140 * @HWSIM_ATTR_PERM_ADDR: permanent mac address of new radio 141 * @HWSIM_ATTR_IFTYPE_SUPPORT: u32 attribute of supported interface types bits 142 * @HWSIM_ATTR_CIPHER_SUPPORT: u32 array of supported cipher types 143 * @__HWSIM_ATTR_MAX: enum limit 144 */ 145 146 147 enum { 148 HWSIM_ATTR_UNSPEC, 149 HWSIM_ATTR_ADDR_RECEIVER, 150 HWSIM_ATTR_ADDR_TRANSMITTER, 151 HWSIM_ATTR_FRAME, 152 HWSIM_ATTR_FLAGS, 153 HWSIM_ATTR_RX_RATE, 154 HWSIM_ATTR_SIGNAL, 155 HWSIM_ATTR_TX_INFO, 156 HWSIM_ATTR_COOKIE, 157 HWSIM_ATTR_CHANNELS, 158 HWSIM_ATTR_RADIO_ID, 159 HWSIM_ATTR_REG_HINT_ALPHA2, 160 HWSIM_ATTR_REG_CUSTOM_REG, 161 HWSIM_ATTR_REG_STRICT_REG, 162 HWSIM_ATTR_SUPPORT_P2P_DEVICE, 163 HWSIM_ATTR_USE_CHANCTX, 164 HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE, 165 HWSIM_ATTR_RADIO_NAME, 166 HWSIM_ATTR_NO_VIF, 167 HWSIM_ATTR_FREQ, 168 HWSIM_ATTR_PAD, 169 HWSIM_ATTR_TX_INFO_FLAGS, 170 HWSIM_ATTR_PERM_ADDR, 171 HWSIM_ATTR_IFTYPE_SUPPORT, 172 HWSIM_ATTR_CIPHER_SUPPORT, 173 __HWSIM_ATTR_MAX, 174 }; 175 #define HWSIM_ATTR_MAX (__HWSIM_ATTR_MAX - 1) 176 177 /** 178 * struct hwsim_tx_rate - rate selection/status 179 * 180 * @idx: rate index to attempt to send with 181 * @count: number of tries in this rate before going to the next rate 182 * 183 * A value of -1 for @idx indicates an invalid rate and, if used 184 * in an array of retry rates, that no more rates should be tried. 185 * 186 * When used for transmit status reporting, the driver should 187 * always report the rate and number of retries used. 188 * 189 */ 190 struct hwsim_tx_rate { 191 s8 idx; 192 u8 count; 193 } __packed; 194 195 /** 196 * enum hwsim_tx_rate_flags - per-rate flags set by the rate control algorithm. 197 * Inspired by structure mac80211_rate_control_flags. New flags may be 198 * appended, but old flags not deleted, to keep compatibility for 199 * userspace. 200 * 201 * These flags are set by the Rate control algorithm for each rate during tx, 202 * in the @flags member of struct ieee80211_tx_rate. 203 * 204 * @MAC80211_HWSIM_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate. 205 * @MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required. 206 * This is set if the current BSS requires ERP protection. 207 * @MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE: Use short preamble. 208 * @MAC80211_HWSIM_TX_RC_MCS: HT rate. 209 * @MAC80211_HWSIM_TX_RC_VHT_MCS: VHT MCS rate, in this case the idx field is 210 * split into a higher 4 bits (Nss) and lower 4 bits (MCS number) 211 * @MAC80211_HWSIM_TX_RC_GREEN_FIELD: Indicates whether this rate should be used 212 * in Greenfield mode. 213 * @MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 214 * 40 MHz. 215 * @MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH: Indicates 80 MHz transmission 216 * @MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH: Indicates 160 MHz transmission 217 * (80+80 isn't supported yet) 218 * @MAC80211_HWSIM_TX_RC_DUP_DATA: The frame should be transmitted on both of 219 * the adjacent 20 MHz channels, if the current channel type is 220 * NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS. 221 * @MAC80211_HWSIM_TX_RC_SHORT_GI: Short Guard interval should be used for this 222 * rate. 223 */ 224 enum hwsim_tx_rate_flags { 225 MAC80211_HWSIM_TX_RC_USE_RTS_CTS = BIT(0), 226 MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT = BIT(1), 227 MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE = BIT(2), 228 229 /* rate index is an HT/VHT MCS instead of an index */ 230 MAC80211_HWSIM_TX_RC_MCS = BIT(3), 231 MAC80211_HWSIM_TX_RC_GREEN_FIELD = BIT(4), 232 MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH = BIT(5), 233 MAC80211_HWSIM_TX_RC_DUP_DATA = BIT(6), 234 MAC80211_HWSIM_TX_RC_SHORT_GI = BIT(7), 235 MAC80211_HWSIM_TX_RC_VHT_MCS = BIT(8), 236 MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH = BIT(9), 237 MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH = BIT(10), 238 }; 239 240 /** 241 * struct hwsim_tx_rate - rate selection/status 242 * 243 * @idx: rate index to attempt to send with 244 * @count: number of tries in this rate before going to the next rate 245 * 246 * A value of -1 for @idx indicates an invalid rate and, if used 247 * in an array of retry rates, that no more rates should be tried. 248 * 249 * When used for transmit status reporting, the driver should 250 * always report the rate and number of retries used. 251 * 252 */ 253 struct hwsim_tx_rate_flag { 254 s8 idx; 255 u16 flags; 256 } __packed; 257 258 /** 259 * DOC: Frame transmission support over virtio 260 * 261 * Frame transmission is also supported over virtio to allow communication 262 * with external entities. 263 */ 264 265 /** 266 * enum hwsim_vqs - queues for virtio frame transmission 267 * 268 * @HWSIM_VQ_TX: send frames to external entity 269 * @HWSIM_VQ_RX: receive frames and transmission info reports 270 * @HWSIM_NUM_VQS: enum limit 271 */ 272 enum { 273 HWSIM_VQ_TX, 274 HWSIM_VQ_RX, 275 HWSIM_NUM_VQS, 276 }; 277 #endif /* __MAC80211_HWSIM_H */ 278