1============================= 2Netlink interface for ethtool 3============================= 4 5 6Basic information 7================= 8 9Netlink interface for ethtool uses generic netlink family ``ethtool`` 10(userspace application should use macros ``ETHTOOL_GENL_NAME`` and 11``ETHTOOL_GENL_VERSION`` defined in ``<linux/ethtool_netlink.h>`` uapi 12header). This family does not use a specific header, all information in 13requests and replies is passed using netlink attributes. 14 15The ethtool netlink interface uses extended ACK for error and warning 16reporting, userspace application developers are encouraged to make these 17messages available to user in a suitable way. 18 19Requests can be divided into three categories: "get" (retrieving information), 20"set" (setting parameters) and "action" (invoking an action). 21 22All "set" and "action" type requests require admin privileges 23(``CAP_NET_ADMIN`` in the namespace). Most "get" type requests are allowed for 24anyone but there are exceptions (where the response contains sensitive 25information). In some cases, the request as such is allowed for anyone but 26unprivileged users have attributes with sensitive information (e.g. 27wake-on-lan password) omitted. 28 29 30Conventions 31=========== 32 33Attributes which represent a boolean value usually use NLA_U8 type so that we 34can distinguish three states: "on", "off" and "not present" (meaning the 35information is not available in "get" requests or value is not to be changed 36in "set" requests). For these attributes, the "true" value should be passed as 37number 1 but any non-zero value should be understood as "true" by recipient. 38In the tables below, "bool" denotes NLA_U8 attributes interpreted in this way. 39 40In the message structure descriptions below, if an attribute name is suffixed 41with "+", parent nest can contain multiple attributes of the same type. This 42implements an array of entries. 43 44Attributes that need to be filled-in by device drivers and that are dumped to 45user space based on whether they are valid or not should not use zero as a 46valid value. This avoids the need to explicitly signal the validity of the 47attribute in the device driver API. 48 49 50Request header 51============== 52 53Each request or reply message contains a nested attribute with common header. 54Structure of this header is 55 56 ============================== ====== ============================= 57 ``ETHTOOL_A_HEADER_DEV_INDEX`` u32 device ifindex 58 ``ETHTOOL_A_HEADER_DEV_NAME`` string device name 59 ``ETHTOOL_A_HEADER_FLAGS`` u32 flags common for all requests 60 ``ETHTOOL_A_HEADER_PHY_INDEX`` u32 phy device index 61 ============================== ====== ============================= 62 63``ETHTOOL_A_HEADER_DEV_INDEX`` and ``ETHTOOL_A_HEADER_DEV_NAME`` identify the 64device message relates to. One of them is sufficient in requests, if both are 65used, they must identify the same device. Some requests, e.g. global string 66sets, do not require device identification. Most ``GET`` requests also allow 67dump requests without device identification to query the same information for 68all devices providing it (each device in a separate message). 69 70``ETHTOOL_A_HEADER_FLAGS`` is a bitmap of request flags common for all request 71types. The interpretation of these flags is the same for all request types but 72the flags may not apply to requests. Recognized flags are: 73 74 ================================= =================================== 75 ``ETHTOOL_FLAG_COMPACT_BITSETS`` use compact format bitsets in reply 76 ``ETHTOOL_FLAG_OMIT_REPLY`` omit optional reply (_SET and _ACT) 77 ``ETHTOOL_FLAG_STATS`` include optional device statistics 78 ================================= =================================== 79 80New request flags should follow the general idea that if the flag is not set, 81the behaviour is backward compatible, i.e. requests from old clients not aware 82of the flag should be interpreted the way the client expects. A client must 83not set flags it does not understand. 84 85``ETHTOOL_A_HEADER_PHY_INDEX`` identifies the Ethernet PHY the message relates to. 86As there are numerous commands that are related to PHY configuration, and because 87there may be more than one PHY on the link, the PHY index can be passed in the 88request for the commands that needs it. It is, however, not mandatory, and if it 89is not passed for commands that target a PHY, the net_device.phydev pointer 90is used. 91 92Bit sets 93======== 94 95For short bitmaps of (reasonably) fixed length, standard ``NLA_BITFIELD32`` 96type is used. For arbitrary length bitmaps, ethtool netlink uses a nested 97attribute with contents of one of two forms: compact (two binary bitmaps 98representing bit values and mask of affected bits) and bit-by-bit (list of 99bits identified by either index or name). 100 101Verbose (bit-by-bit) bitsets allow sending symbolic names for bits together 102with their values which saves a round trip (when the bitset is passed in a 103request) or at least a second request (when the bitset is in a reply). This is 104useful for one shot applications like traditional ethtool command. On the 105other hand, long running applications like ethtool monitor (displaying 106notifications) or network management daemons may prefer fetching the names 107only once and using compact form to save message size. Notifications from 108ethtool netlink interface always use compact form for bitsets. 109 110A bitset can represent either a value/mask pair (``ETHTOOL_A_BITSET_NOMASK`` 111not set) or a single bitmap (``ETHTOOL_A_BITSET_NOMASK`` set). In requests 112modifying a bitmap, the former changes the bit set in mask to values set in 113value and preserves the rest; the latter sets the bits set in the bitmap and 114clears the rest. 115 116Compact form: nested (bitset) attribute contents: 117 118 ============================ ====== ============================ 119 ``ETHTOOL_A_BITSET_NOMASK`` flag no mask, only a list 120 ``ETHTOOL_A_BITSET_SIZE`` u32 number of significant bits 121 ``ETHTOOL_A_BITSET_VALUE`` binary bitmap of bit values 122 ``ETHTOOL_A_BITSET_MASK`` binary bitmap of valid bits 123 ============================ ====== ============================ 124 125Value and mask must have length at least ``ETHTOOL_A_BITSET_SIZE`` bits 126rounded up to a multiple of 32 bits. They consist of 32-bit words in host byte 127order, words ordered from least significant to most significant (i.e. the same 128way as bitmaps are passed with ioctl interface). 129 130For compact form, ``ETHTOOL_A_BITSET_SIZE`` and ``ETHTOOL_A_BITSET_VALUE`` are 131mandatory. ``ETHTOOL_A_BITSET_MASK`` attribute is mandatory if 132``ETHTOOL_A_BITSET_NOMASK`` is not set (bitset represents a value/mask pair); 133if ``ETHTOOL_A_BITSET_NOMASK`` is not set, ``ETHTOOL_A_BITSET_MASK`` is not 134allowed (bitset represents a single bitmap. 135 136Kernel bit set length may differ from userspace length if older application is 137used on newer kernel or vice versa. If userspace bitmap is longer, an error is 138issued only if the request actually tries to set values of some bits not 139recognized by kernel. 140 141Bit-by-bit form: nested (bitset) attribute contents: 142 143 +------------------------------------+--------+-----------------------------+ 144 | ``ETHTOOL_A_BITSET_NOMASK`` | flag | no mask, only a list | 145 +------------------------------------+--------+-----------------------------+ 146 | ``ETHTOOL_A_BITSET_SIZE`` | u32 | number of significant bits | 147 +------------------------------------+--------+-----------------------------+ 148 | ``ETHTOOL_A_BITSET_BITS`` | nested | array of bits | 149 +-+----------------------------------+--------+-----------------------------+ 150 | | ``ETHTOOL_A_BITSET_BITS_BIT+`` | nested | one bit | 151 +-+-+--------------------------------+--------+-----------------------------+ 152 | | | ``ETHTOOL_A_BITSET_BIT_INDEX`` | u32 | bit index (0 for LSB) | 153 +-+-+--------------------------------+--------+-----------------------------+ 154 | | | ``ETHTOOL_A_BITSET_BIT_NAME`` | string | bit name | 155 +-+-+--------------------------------+--------+-----------------------------+ 156 | | | ``ETHTOOL_A_BITSET_BIT_VALUE`` | flag | present if bit is set | 157 +-+-+--------------------------------+--------+-----------------------------+ 158 159Bit size is optional for bit-by-bit form. ``ETHTOOL_A_BITSET_BITS`` nest can 160only contain ``ETHTOOL_A_BITSET_BITS_BIT`` attributes but there can be an 161arbitrary number of them. A bit may be identified by its index or by its 162name. When used in requests, listed bits are set to 0 or 1 according to 163``ETHTOOL_A_BITSET_BIT_VALUE``, the rest is preserved. A request fails if 164index exceeds kernel bit length or if name is not recognized. 165 166When ``ETHTOOL_A_BITSET_NOMASK`` flag is present, bitset is interpreted as 167a simple bitmap. ``ETHTOOL_A_BITSET_BIT_VALUE`` attributes are not used in 168such case. Such bitset represents a bitmap with listed bits set and the rest 169zero. 170 171In requests, application can use either form. Form used by kernel in reply is 172determined by ``ETHTOOL_FLAG_COMPACT_BITSETS`` flag in flags field of request 173header. Semantics of value and mask depends on the attribute. 174 175 176List of message types 177===================== 178 179All constants identifying message types use ``ETHTOOL_CMD_`` prefix and suffix 180according to message purpose: 181 182 ============== ====================================== 183 ``_GET`` userspace request to retrieve data 184 ``_SET`` userspace request to set data 185 ``_ACT`` userspace request to perform an action 186 ``_GET_REPLY`` kernel reply to a ``GET`` request 187 ``_SET_REPLY`` kernel reply to a ``SET`` request 188 ``_ACT_REPLY`` kernel reply to an ``ACT`` request 189 ``_NTF`` kernel notification 190 ============== ====================================== 191 192Userspace to kernel: 193 194 ===================================== ================================= 195 ``ETHTOOL_MSG_STRSET_GET`` get string set 196 ``ETHTOOL_MSG_LINKINFO_GET`` get link settings 197 ``ETHTOOL_MSG_LINKINFO_SET`` set link settings 198 ``ETHTOOL_MSG_LINKMODES_GET`` get link modes info 199 ``ETHTOOL_MSG_LINKMODES_SET`` set link modes info 200 ``ETHTOOL_MSG_LINKSTATE_GET`` get link state 201 ``ETHTOOL_MSG_DEBUG_GET`` get debugging settings 202 ``ETHTOOL_MSG_DEBUG_SET`` set debugging settings 203 ``ETHTOOL_MSG_WOL_GET`` get wake-on-lan settings 204 ``ETHTOOL_MSG_WOL_SET`` set wake-on-lan settings 205 ``ETHTOOL_MSG_FEATURES_GET`` get device features 206 ``ETHTOOL_MSG_FEATURES_SET`` set device features 207 ``ETHTOOL_MSG_PRIVFLAGS_GET`` get private flags 208 ``ETHTOOL_MSG_PRIVFLAGS_SET`` set private flags 209 ``ETHTOOL_MSG_RINGS_GET`` get ring sizes 210 ``ETHTOOL_MSG_RINGS_SET`` set ring sizes 211 ``ETHTOOL_MSG_CHANNELS_GET`` get channel counts 212 ``ETHTOOL_MSG_CHANNELS_SET`` set channel counts 213 ``ETHTOOL_MSG_COALESCE_GET`` get coalescing parameters 214 ``ETHTOOL_MSG_COALESCE_SET`` set coalescing parameters 215 ``ETHTOOL_MSG_PAUSE_GET`` get pause parameters 216 ``ETHTOOL_MSG_PAUSE_SET`` set pause parameters 217 ``ETHTOOL_MSG_EEE_GET`` get EEE settings 218 ``ETHTOOL_MSG_EEE_SET`` set EEE settings 219 ``ETHTOOL_MSG_TSINFO_GET`` get timestamping info 220 ``ETHTOOL_MSG_CABLE_TEST_ACT`` action start cable test 221 ``ETHTOOL_MSG_CABLE_TEST_TDR_ACT`` action start raw TDR cable test 222 ``ETHTOOL_MSG_TUNNEL_INFO_GET`` get tunnel offload info 223 ``ETHTOOL_MSG_FEC_GET`` get FEC settings 224 ``ETHTOOL_MSG_FEC_SET`` set FEC settings 225 ``ETHTOOL_MSG_MODULE_EEPROM_GET`` read SFP module EEPROM 226 ``ETHTOOL_MSG_STATS_GET`` get standard statistics 227 ``ETHTOOL_MSG_PHC_VCLOCKS_GET`` get PHC virtual clocks info 228 ``ETHTOOL_MSG_MODULE_SET`` set transceiver module parameters 229 ``ETHTOOL_MSG_MODULE_GET`` get transceiver module parameters 230 ``ETHTOOL_MSG_PSE_SET`` set PSE parameters 231 ``ETHTOOL_MSG_PSE_GET`` get PSE parameters 232 ``ETHTOOL_MSG_RSS_GET`` get RSS settings 233 ``ETHTOOL_MSG_PLCA_GET_CFG`` get PLCA RS parameters 234 ``ETHTOOL_MSG_PLCA_SET_CFG`` set PLCA RS parameters 235 ``ETHTOOL_MSG_PLCA_GET_STATUS`` get PLCA RS status 236 ``ETHTOOL_MSG_MM_GET`` get MAC merge layer state 237 ``ETHTOOL_MSG_MM_SET`` set MAC merge layer parameters 238 ``ETHTOOL_MSG_MODULE_FW_FLASH_ACT`` flash transceiver module firmware 239 ``ETHTOOL_MSG_PHY_GET`` get Ethernet PHY information 240 ``ETHTOOL_MSG_TSCONFIG_GET`` get hw timestamping configuration 241 ``ETHTOOL_MSG_TSCONFIG_SET`` set hw timestamping configuration 242 ===================================== ================================= 243 244Kernel to userspace: 245 246 ======================================== ================================= 247 ``ETHTOOL_MSG_STRSET_GET_REPLY`` string set contents 248 ``ETHTOOL_MSG_LINKINFO_GET_REPLY`` link settings 249 ``ETHTOOL_MSG_LINKINFO_NTF`` link settings notification 250 ``ETHTOOL_MSG_LINKMODES_GET_REPLY`` link modes info 251 ``ETHTOOL_MSG_LINKMODES_NTF`` link modes notification 252 ``ETHTOOL_MSG_LINKSTATE_GET_REPLY`` link state info 253 ``ETHTOOL_MSG_DEBUG_GET_REPLY`` debugging settings 254 ``ETHTOOL_MSG_DEBUG_NTF`` debugging settings notification 255 ``ETHTOOL_MSG_WOL_GET_REPLY`` wake-on-lan settings 256 ``ETHTOOL_MSG_WOL_NTF`` wake-on-lan settings notification 257 ``ETHTOOL_MSG_FEATURES_GET_REPLY`` device features 258 ``ETHTOOL_MSG_FEATURES_SET_REPLY`` optional reply to FEATURES_SET 259 ``ETHTOOL_MSG_FEATURES_NTF`` netdev features notification 260 ``ETHTOOL_MSG_PRIVFLAGS_GET_REPLY`` private flags 261 ``ETHTOOL_MSG_PRIVFLAGS_NTF`` private flags 262 ``ETHTOOL_MSG_RINGS_GET_REPLY`` ring sizes 263 ``ETHTOOL_MSG_RINGS_NTF`` ring sizes 264 ``ETHTOOL_MSG_CHANNELS_GET_REPLY`` channel counts 265 ``ETHTOOL_MSG_CHANNELS_NTF`` channel counts 266 ``ETHTOOL_MSG_COALESCE_GET_REPLY`` coalescing parameters 267 ``ETHTOOL_MSG_COALESCE_NTF`` coalescing parameters 268 ``ETHTOOL_MSG_PAUSE_GET_REPLY`` pause parameters 269 ``ETHTOOL_MSG_PAUSE_NTF`` pause parameters 270 ``ETHTOOL_MSG_EEE_GET_REPLY`` EEE settings 271 ``ETHTOOL_MSG_EEE_NTF`` EEE settings 272 ``ETHTOOL_MSG_TSINFO_GET_REPLY`` timestamping info 273 ``ETHTOOL_MSG_CABLE_TEST_NTF`` Cable test results 274 ``ETHTOOL_MSG_CABLE_TEST_TDR_NTF`` Cable test TDR results 275 ``ETHTOOL_MSG_TUNNEL_INFO_GET_REPLY`` tunnel offload info 276 ``ETHTOOL_MSG_FEC_GET_REPLY`` FEC settings 277 ``ETHTOOL_MSG_FEC_NTF`` FEC settings 278 ``ETHTOOL_MSG_MODULE_EEPROM_GET_REPLY`` read SFP module EEPROM 279 ``ETHTOOL_MSG_STATS_GET_REPLY`` standard statistics 280 ``ETHTOOL_MSG_PHC_VCLOCKS_GET_REPLY`` PHC virtual clocks info 281 ``ETHTOOL_MSG_MODULE_GET_REPLY`` transceiver module parameters 282 ``ETHTOOL_MSG_PSE_GET_REPLY`` PSE parameters 283 ``ETHTOOL_MSG_RSS_GET_REPLY`` RSS settings 284 ``ETHTOOL_MSG_PLCA_GET_CFG_REPLY`` PLCA RS parameters 285 ``ETHTOOL_MSG_PLCA_GET_STATUS_REPLY`` PLCA RS status 286 ``ETHTOOL_MSG_PLCA_NTF`` PLCA RS parameters 287 ``ETHTOOL_MSG_MM_GET_REPLY`` MAC merge layer status 288 ``ETHTOOL_MSG_MODULE_FW_FLASH_NTF`` transceiver module flash updates 289 ``ETHTOOL_MSG_PHY_GET_REPLY`` Ethernet PHY information 290 ``ETHTOOL_MSG_PHY_NTF`` Ethernet PHY information change 291 ``ETHTOOL_MSG_TSCONFIG_GET_REPLY`` hw timestamping configuration 292 ``ETHTOOL_MSG_TSCONFIG_SET_REPLY`` new hw timestamping configuration 293 ======================================== ================================= 294 295``GET`` requests are sent by userspace applications to retrieve device 296information. They usually do not contain any message specific attributes. 297Kernel replies with corresponding "GET_REPLY" message. For most types, ``GET`` 298request with ``NLM_F_DUMP`` and no device identification can be used to query 299the information for all devices supporting the request. 300 301If the data can be also modified, corresponding ``SET`` message with the same 302layout as corresponding ``GET_REPLY`` is used to request changes. Only 303attributes where a change is requested are included in such request (also, not 304all attributes may be changed). Replies to most ``SET`` request consist only 305of error code and extack; if kernel provides additional data, it is sent in 306the form of corresponding ``SET_REPLY`` message which can be suppressed by 307setting ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header. 308 309Data modification also triggers sending a ``NTF`` message with a notification. 310These usually bear only a subset of attributes which was affected by the 311change. The same notification is issued if the data is modified using other 312means (mostly ioctl ethtool interface). Unlike notifications from ethtool 313netlink code which are only sent if something actually changed, notifications 314triggered by ioctl interface may be sent even if the request did not actually 315change any data. 316 317``ACT`` messages request kernel (driver) to perform a specific action. If some 318information is reported by kernel (which can be suppressed by setting 319``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header), the reply takes form of 320an ``ACT_REPLY`` message. Performing an action also triggers a notification 321(``NTF`` message). 322 323Later sections describe the format and semantics of these messages. 324 325 326STRSET_GET 327========== 328 329Requests contents of a string set as provided by ioctl commands 330``ETHTOOL_GSSET_INFO`` and ``ETHTOOL_GSTRINGS.`` String sets are not user 331writeable so that the corresponding ``STRSET_SET`` message is only used in 332kernel replies. There are two types of string sets: global (independent of 333a device, e.g. device feature names) and device specific (e.g. device private 334flags). 335 336Request contents: 337 338 +---------------------------------------+--------+------------------------+ 339 | ``ETHTOOL_A_STRSET_HEADER`` | nested | request header | 340 +---------------------------------------+--------+------------------------+ 341 | ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | string set to request | 342 +-+-------------------------------------+--------+------------------------+ 343 | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set | 344 +-+-+-----------------------------------+--------+------------------------+ 345 | | | ``ETHTOOL_A_STRINGSET_ID`` | u32 | set id | 346 +-+-+-----------------------------------+--------+------------------------+ 347 348Kernel response contents: 349 350 +---------------------------------------+--------+-----------------------+ 351 | ``ETHTOOL_A_STRSET_HEADER`` | nested | reply header | 352 +---------------------------------------+--------+-----------------------+ 353 | ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | array of string sets | 354 +-+-------------------------------------+--------+-----------------------+ 355 | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set | 356 +-+-+-----------------------------------+--------+-----------------------+ 357 | | | ``ETHTOOL_A_STRINGSET_ID`` | u32 | set id | 358 +-+-+-----------------------------------+--------+-----------------------+ 359 | | | ``ETHTOOL_A_STRINGSET_COUNT`` | u32 | number of strings | 360 +-+-+-----------------------------------+--------+-----------------------+ 361 | | | ``ETHTOOL_A_STRINGSET_STRINGS`` | nested | array of strings | 362 +-+-+-+---------------------------------+--------+-----------------------+ 363 | | | | ``ETHTOOL_A_STRINGS_STRING+`` | nested | one string | 364 +-+-+-+-+-------------------------------+--------+-----------------------+ 365 | | | | | ``ETHTOOL_A_STRING_INDEX`` | u32 | string index | 366 +-+-+-+-+-------------------------------+--------+-----------------------+ 367 | | | | | ``ETHTOOL_A_STRING_VALUE`` | string | string value | 368 +-+-+-+-+-------------------------------+--------+-----------------------+ 369 | ``ETHTOOL_A_STRSET_COUNTS_ONLY`` | flag | return only counts | 370 +---------------------------------------+--------+-----------------------+ 371 372Device identification in request header is optional. Depending on its presence 373a and ``NLM_F_DUMP`` flag, there are three type of ``STRSET_GET`` requests: 374 375 - no ``NLM_F_DUMP,`` no device: get "global" stringsets 376 - no ``NLM_F_DUMP``, with device: get string sets related to the device 377 - ``NLM_F_DUMP``, no device: get device related string sets for all devices 378 379If there is no ``ETHTOOL_A_STRSET_STRINGSETS`` array, all string sets of 380requested type are returned, otherwise only those specified in the request. 381Flag ``ETHTOOL_A_STRSET_COUNTS_ONLY`` tells kernel to only return string 382counts of the sets, not the actual strings. 383 384 385LINKINFO_GET 386============ 387 388Requests link settings as provided by ``ETHTOOL_GLINKSETTINGS`` except for 389link modes and autonegotiation related information. The request does not use 390any attributes. 391 392Request contents: 393 394 ==================================== ====== ========================== 395 ``ETHTOOL_A_LINKINFO_HEADER`` nested request header 396 ==================================== ====== ========================== 397 398Kernel response contents: 399 400 ==================================== ====== ========================== 401 ``ETHTOOL_A_LINKINFO_HEADER`` nested reply header 402 ``ETHTOOL_A_LINKINFO_PORT`` u8 physical port 403 ``ETHTOOL_A_LINKINFO_PHYADDR`` u8 phy MDIO address 404 ``ETHTOOL_A_LINKINFO_TP_MDIX`` u8 MDI(-X) status 405 ``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL`` u8 MDI(-X) control 406 ``ETHTOOL_A_LINKINFO_TRANSCEIVER`` u8 transceiver 407 ==================================== ====== ========================== 408 409Attributes and their values have the same meaning as matching members of the 410corresponding ioctl structures. 411 412``LINKINFO_GET`` allows dump requests (kernel returns reply message for all 413devices supporting the request). 414 415 416LINKINFO_SET 417============ 418 419``LINKINFO_SET`` request allows setting some of the attributes reported by 420``LINKINFO_GET``. 421 422Request contents: 423 424 ==================================== ====== ========================== 425 ``ETHTOOL_A_LINKINFO_HEADER`` nested request header 426 ``ETHTOOL_A_LINKINFO_PORT`` u8 physical port 427 ``ETHTOOL_A_LINKINFO_PHYADDR`` u8 phy MDIO address 428 ``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL`` u8 MDI(-X) control 429 ==================================== ====== ========================== 430 431MDI(-X) status and transceiver cannot be set, request with the corresponding 432attributes is rejected. 433 434 435LINKMODES_GET 436============= 437 438Requests link modes (supported, advertised and peer advertised) and related 439information (autonegotiation status, link speed and duplex) as provided by 440``ETHTOOL_GLINKSETTINGS``. The request does not use any attributes. 441 442Request contents: 443 444 ==================================== ====== ========================== 445 ``ETHTOOL_A_LINKMODES_HEADER`` nested request header 446 ==================================== ====== ========================== 447 448Kernel response contents: 449 450 ========================================== ====== ========================== 451 ``ETHTOOL_A_LINKMODES_HEADER`` nested reply header 452 ``ETHTOOL_A_LINKMODES_AUTONEG`` u8 autonegotiation status 453 ``ETHTOOL_A_LINKMODES_OURS`` bitset advertised link modes 454 ``ETHTOOL_A_LINKMODES_PEER`` bitset partner link modes 455 ``ETHTOOL_A_LINKMODES_SPEED`` u32 link speed (Mb/s) 456 ``ETHTOOL_A_LINKMODES_DUPLEX`` u8 duplex mode 457 ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG`` u8 Master/slave port mode 458 ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE`` u8 Master/slave port state 459 ``ETHTOOL_A_LINKMODES_RATE_MATCHING`` u8 PHY rate matching 460 ========================================== ====== ========================== 461 462For ``ETHTOOL_A_LINKMODES_OURS``, value represents advertised modes and mask 463represents supported modes. ``ETHTOOL_A_LINKMODES_PEER`` in the reply is a bit 464list. 465 466``LINKMODES_GET`` allows dump requests (kernel returns reply messages for all 467devices supporting the request). 468 469 470LINKMODES_SET 471============= 472 473Request contents: 474 475 ========================================== ====== ========================== 476 ``ETHTOOL_A_LINKMODES_HEADER`` nested request header 477 ``ETHTOOL_A_LINKMODES_AUTONEG`` u8 autonegotiation status 478 ``ETHTOOL_A_LINKMODES_OURS`` bitset advertised link modes 479 ``ETHTOOL_A_LINKMODES_PEER`` bitset partner link modes 480 ``ETHTOOL_A_LINKMODES_SPEED`` u32 link speed (Mb/s) 481 ``ETHTOOL_A_LINKMODES_DUPLEX`` u8 duplex mode 482 ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG`` u8 Master/slave port mode 483 ``ETHTOOL_A_LINKMODES_RATE_MATCHING`` u8 PHY rate matching 484 ``ETHTOOL_A_LINKMODES_LANES`` u32 lanes 485 ========================================== ====== ========================== 486 487``ETHTOOL_A_LINKMODES_OURS`` bit set allows setting advertised link modes. If 488autonegotiation is on (either set now or kept from before), advertised modes 489are not changed (no ``ETHTOOL_A_LINKMODES_OURS`` attribute) and at least one 490of speed, duplex and lanes is specified, kernel adjusts advertised modes to all 491supported modes matching speed, duplex, lanes or all (whatever is specified). 492This autoselection is done on ethtool side with ioctl interface, netlink 493interface is supposed to allow requesting changes without knowing what exactly 494kernel supports. 495 496 497LINKSTATE_GET 498============= 499 500Requests link state information. Link up/down flag (as provided by 501``ETHTOOL_GLINK`` ioctl command) is provided. Optionally, extended state might 502be provided as well. In general, extended state describes reasons for why a port 503is down, or why it operates in some non-obvious mode. This request does not have 504any attributes. 505 506Request contents: 507 508 ==================================== ====== ========================== 509 ``ETHTOOL_A_LINKSTATE_HEADER`` nested request header 510 ==================================== ====== ========================== 511 512Kernel response contents: 513 514 ==================================== ====== ============================ 515 ``ETHTOOL_A_LINKSTATE_HEADER`` nested reply header 516 ``ETHTOOL_A_LINKSTATE_LINK`` bool link state (up/down) 517 ``ETHTOOL_A_LINKSTATE_SQI`` u32 Current Signal Quality Index 518 ``ETHTOOL_A_LINKSTATE_SQI_MAX`` u32 Max support SQI value 519 ``ETHTOOL_A_LINKSTATE_EXT_STATE`` u8 link extended state 520 ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE`` u8 link extended substate 521 ``ETHTOOL_A_LINKSTATE_EXT_DOWN_CNT`` u32 count of link down events 522 ==================================== ====== ============================ 523 524For most NIC drivers, the value of ``ETHTOOL_A_LINKSTATE_LINK`` returns 525carrier flag provided by ``netif_carrier_ok()`` but there are drivers which 526define their own handler. 527 528``ETHTOOL_A_LINKSTATE_EXT_STATE`` and ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE`` are 529optional values. ethtool core can provide either both 530``ETHTOOL_A_LINKSTATE_EXT_STATE`` and ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE``, 531or only ``ETHTOOL_A_LINKSTATE_EXT_STATE``, or none of them. 532 533``LINKSTATE_GET`` allows dump requests (kernel returns reply messages for all 534devices supporting the request). 535 536 537Link extended states: 538 539 ================================================ ============================================ 540 ``ETHTOOL_LINK_EXT_STATE_AUTONEG`` States relating to the autonegotiation or 541 issues therein 542 543 ``ETHTOOL_LINK_EXT_STATE_LINK_TRAINING_FAILURE`` Failure during link training 544 545 ``ETHTOOL_LINK_EXT_STATE_LINK_LOGICAL_MISMATCH`` Logical mismatch in physical coding sublayer 546 or forward error correction sublayer 547 548 ``ETHTOOL_LINK_EXT_STATE_BAD_SIGNAL_INTEGRITY`` Signal integrity issues 549 550 ``ETHTOOL_LINK_EXT_STATE_NO_CABLE`` No cable connected 551 552 ``ETHTOOL_LINK_EXT_STATE_CABLE_ISSUE`` Failure is related to cable, 553 e.g., unsupported cable 554 555 ``ETHTOOL_LINK_EXT_STATE_EEPROM_ISSUE`` Failure is related to EEPROM, e.g., failure 556 during reading or parsing the data 557 558 ``ETHTOOL_LINK_EXT_STATE_CALIBRATION_FAILURE`` Failure during calibration algorithm 559 560 ``ETHTOOL_LINK_EXT_STATE_POWER_BUDGET_EXCEEDED`` The hardware is not able to provide the 561 power required from cable or module 562 563 ``ETHTOOL_LINK_EXT_STATE_OVERHEAT`` The module is overheated 564 565 ``ETHTOOL_LINK_EXT_STATE_MODULE`` Transceiver module issue 566 ================================================ ============================================ 567 568Link extended substates: 569 570 Autoneg substates: 571 572 =============================================================== ================================ 573 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED`` Peer side is down 574 575 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_ACK_NOT_RECEIVED`` Ack not received from peer side 576 577 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NEXT_PAGE_EXCHANGE_FAILED`` Next page exchange failed 578 579 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED_FORCE_MODE`` Peer side is down during force 580 mode or there is no agreement of 581 speed 582 583 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_FEC_MISMATCH_DURING_OVERRIDE`` Forward error correction modes 584 in both sides are mismatched 585 586 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_HCD`` No Highest Common Denominator 587 =============================================================== ================================ 588 589 Link training substates: 590 591 =========================================================================== ==================== 592 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_FRAME_LOCK_NOT_ACQUIRED`` Frames were not 593 recognized, the 594 lock failed 595 596 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_INHIBIT_TIMEOUT`` The lock did not 597 occur before 598 timeout 599 600 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_PARTNER_DID_NOT_SET_RECEIVER_READY`` Peer side did not 601 send ready signal 602 after training 603 process 604 605 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_REMOTE_FAULT`` Remote side is not 606 ready yet 607 =========================================================================== ==================== 608 609 Link logical mismatch substates: 610 611 ================================================================ =============================== 612 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_BLOCK_LOCK`` Physical coding sublayer was 613 not locked in first phase - 614 block lock 615 616 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_AM_LOCK`` Physical coding sublayer was 617 not locked in second phase - 618 alignment markers lock 619 620 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_GET_ALIGN_STATUS`` Physical coding sublayer did 621 not get align status 622 623 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_FC_FEC_IS_NOT_LOCKED`` FC forward error correction is 624 not locked 625 626 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_RS_FEC_IS_NOT_LOCKED`` RS forward error correction is 627 not locked 628 ================================================================ =============================== 629 630 Bad signal integrity substates: 631 632 ================================================================= ============================= 633 ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_LARGE_NUMBER_OF_PHYSICAL_ERRORS`` Large number of physical 634 errors 635 636 ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_UNSUPPORTED_RATE`` The system attempted to 637 operate the cable at a rate 638 that is not formally 639 supported, which led to 640 signal integrity issues 641 642 ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_REFERENCE_CLOCK_LOST`` The external clock signal for 643 SerDes is too weak or 644 unavailable. 645 646 ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_ALOS`` The received signal for 647 SerDes is too weak because 648 analog loss of signal. 649 ================================================================= ============================= 650 651 Cable issue substates: 652 653 =================================================== ============================================ 654 ``ETHTOOL_LINK_EXT_SUBSTATE_CI_UNSUPPORTED_CABLE`` Unsupported cable 655 656 ``ETHTOOL_LINK_EXT_SUBSTATE_CI_CABLE_TEST_FAILURE`` Cable test failure 657 =================================================== ============================================ 658 659 Transceiver module issue substates: 660 661 =================================================== ============================================ 662 ``ETHTOOL_LINK_EXT_SUBSTATE_MODULE_CMIS_NOT_READY`` The CMIS Module State Machine did not reach 663 the ModuleReady state. For example, if the 664 module is stuck at ModuleFault state 665 =================================================== ============================================ 666 667DEBUG_GET 668========= 669 670Requests debugging settings of a device. At the moment, only message mask is 671provided. 672 673Request contents: 674 675 ==================================== ====== ========================== 676 ``ETHTOOL_A_DEBUG_HEADER`` nested request header 677 ==================================== ====== ========================== 678 679Kernel response contents: 680 681 ==================================== ====== ========================== 682 ``ETHTOOL_A_DEBUG_HEADER`` nested reply header 683 ``ETHTOOL_A_DEBUG_MSGMASK`` bitset message mask 684 ==================================== ====== ========================== 685 686The message mask (``ETHTOOL_A_DEBUG_MSGMASK``) is equal to message level as 687provided by ``ETHTOOL_GMSGLVL`` and set by ``ETHTOOL_SMSGLVL`` in ioctl 688interface. While it is called message level there for historical reasons, most 689drivers and almost all newer drivers use it as a mask of enabled message 690classes (represented by ``NETIF_MSG_*`` constants); therefore netlink 691interface follows its actual use in practice. 692 693``DEBUG_GET`` allows dump requests (kernel returns reply messages for all 694devices supporting the request). 695 696 697DEBUG_SET 698========= 699 700Set or update debugging settings of a device. At the moment, only message mask 701is supported. 702 703Request contents: 704 705 ==================================== ====== ========================== 706 ``ETHTOOL_A_DEBUG_HEADER`` nested request header 707 ``ETHTOOL_A_DEBUG_MSGMASK`` bitset message mask 708 ==================================== ====== ========================== 709 710``ETHTOOL_A_DEBUG_MSGMASK`` bit set allows setting or modifying mask of 711enabled debugging message types for the device. 712 713 714WOL_GET 715======= 716 717Query device wake-on-lan settings. Unlike most "GET" type requests, 718``ETHTOOL_MSG_WOL_GET`` requires (netns) ``CAP_NET_ADMIN`` privileges as it 719(potentially) provides SecureOn(tm) password which is confidential. 720 721Request contents: 722 723 ==================================== ====== ========================== 724 ``ETHTOOL_A_WOL_HEADER`` nested request header 725 ==================================== ====== ========================== 726 727Kernel response contents: 728 729 ==================================== ====== ========================== 730 ``ETHTOOL_A_WOL_HEADER`` nested reply header 731 ``ETHTOOL_A_WOL_MODES`` bitset mask of enabled WoL modes 732 ``ETHTOOL_A_WOL_SOPASS`` binary SecureOn(tm) password 733 ==================================== ====== ========================== 734 735In reply, ``ETHTOOL_A_WOL_MODES`` mask consists of modes supported by the 736device, value of modes which are enabled. ``ETHTOOL_A_WOL_SOPASS`` is only 737included in reply if ``WAKE_MAGICSECURE`` mode is supported. 738 739 740WOL_SET 741======= 742 743Set or update wake-on-lan settings. 744 745Request contents: 746 747 ==================================== ====== ========================== 748 ``ETHTOOL_A_WOL_HEADER`` nested request header 749 ``ETHTOOL_A_WOL_MODES`` bitset enabled WoL modes 750 ``ETHTOOL_A_WOL_SOPASS`` binary SecureOn(tm) password 751 ==================================== ====== ========================== 752 753``ETHTOOL_A_WOL_SOPASS`` is only allowed for devices supporting 754``WAKE_MAGICSECURE`` mode. 755 756 757FEATURES_GET 758============ 759 760Gets netdev features like ``ETHTOOL_GFEATURES`` ioctl request. 761 762Request contents: 763 764 ==================================== ====== ========================== 765 ``ETHTOOL_A_FEATURES_HEADER`` nested request header 766 ==================================== ====== ========================== 767 768Kernel response contents: 769 770 ==================================== ====== ========================== 771 ``ETHTOOL_A_FEATURES_HEADER`` nested reply header 772 ``ETHTOOL_A_FEATURES_HW`` bitset dev->hw_features 773 ``ETHTOOL_A_FEATURES_WANTED`` bitset dev->wanted_features 774 ``ETHTOOL_A_FEATURES_ACTIVE`` bitset dev->features 775 ``ETHTOOL_A_FEATURES_NOCHANGE`` bitset NETIF_F_NEVER_CHANGE 776 ==================================== ====== ========================== 777 778Bitmaps in kernel response have the same meaning as bitmaps used in ioctl 779interference but attribute names are different (they are based on 780corresponding members of struct net_device). Legacy "flags" are not provided, 781if userspace needs them (most likely only ethtool for backward compatibility), 782it can calculate their values from related feature bits itself. 783ETHA_FEATURES_HW uses mask consisting of all features recognized by kernel (to 784provide all names when using verbose bitmap format), the other three use no 785mask (simple bit lists). 786 787 788FEATURES_SET 789============ 790 791Request to set netdev features like ``ETHTOOL_SFEATURES`` ioctl request. 792 793Request contents: 794 795 ==================================== ====== ========================== 796 ``ETHTOOL_A_FEATURES_HEADER`` nested request header 797 ``ETHTOOL_A_FEATURES_WANTED`` bitset requested features 798 ==================================== ====== ========================== 799 800Kernel response contents: 801 802 ==================================== ====== ========================== 803 ``ETHTOOL_A_FEATURES_HEADER`` nested reply header 804 ``ETHTOOL_A_FEATURES_WANTED`` bitset diff wanted vs. result 805 ``ETHTOOL_A_FEATURES_ACTIVE`` bitset diff old vs. new active 806 ==================================== ====== ========================== 807 808Request contains only one bitset which can be either value/mask pair (request 809to change specific feature bits and leave the rest) or only a value (request 810to set all features to specified set). 811 812As request is subject to netdev_change_features() sanity checks, optional 813kernel reply (can be suppressed by ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request 814header) informs client about the actual result. ``ETHTOOL_A_FEATURES_WANTED`` 815reports the difference between client request and actual result: mask consists 816of bits which differ between requested features and result (dev->features 817after the operation), value consists of values of these bits in the request 818(i.e. negated values from resulting features). ``ETHTOOL_A_FEATURES_ACTIVE`` 819reports the difference between old and new dev->features: mask consists of 820bits which have changed, values are their values in new dev->features (after 821the operation). 822 823``ETHTOOL_MSG_FEATURES_NTF`` notification is sent not only if device features 824are modified using ``ETHTOOL_MSG_FEATURES_SET`` request or on of ethtool ioctl 825request but also each time features are modified with netdev_update_features() 826or netdev_change_features(). 827 828 829PRIVFLAGS_GET 830============= 831 832Gets private flags like ``ETHTOOL_GPFLAGS`` ioctl request. 833 834Request contents: 835 836 ==================================== ====== ========================== 837 ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested request header 838 ==================================== ====== ========================== 839 840Kernel response contents: 841 842 ==================================== ====== ========================== 843 ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested reply header 844 ``ETHTOOL_A_PRIVFLAGS_FLAGS`` bitset private flags 845 ==================================== ====== ========================== 846 847``ETHTOOL_A_PRIVFLAGS_FLAGS`` is a bitset with values of device private flags. 848These flags are defined by driver, their number and names (and also meaning) 849are device dependent. For compact bitset format, names can be retrieved as 850``ETH_SS_PRIV_FLAGS`` string set. If verbose bitset format is requested, 851response uses all private flags supported by the device as mask so that client 852gets the full information without having to fetch the string set with names. 853 854 855PRIVFLAGS_SET 856============= 857 858Sets or modifies values of device private flags like ``ETHTOOL_SPFLAGS`` 859ioctl request. 860 861Request contents: 862 863 ==================================== ====== ========================== 864 ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested request header 865 ``ETHTOOL_A_PRIVFLAGS_FLAGS`` bitset private flags 866 ==================================== ====== ========================== 867 868``ETHTOOL_A_PRIVFLAGS_FLAGS`` can either set the whole set of private flags or 869modify only values of some of them. 870 871 872RINGS_GET 873========= 874 875Gets ring sizes like ``ETHTOOL_GRINGPARAM`` ioctl request. 876 877Request contents: 878 879 ==================================== ====== ========================== 880 ``ETHTOOL_A_RINGS_HEADER`` nested request header 881 ==================================== ====== ========================== 882 883Kernel response contents: 884 885 ======================================= ====== =========================== 886 ``ETHTOOL_A_RINGS_HEADER`` nested reply header 887 ``ETHTOOL_A_RINGS_RX_MAX`` u32 max size of RX ring 888 ``ETHTOOL_A_RINGS_RX_MINI_MAX`` u32 max size of RX mini ring 889 ``ETHTOOL_A_RINGS_RX_JUMBO_MAX`` u32 max size of RX jumbo ring 890 ``ETHTOOL_A_RINGS_TX_MAX`` u32 max size of TX ring 891 ``ETHTOOL_A_RINGS_RX`` u32 size of RX ring 892 ``ETHTOOL_A_RINGS_RX_MINI`` u32 size of RX mini ring 893 ``ETHTOOL_A_RINGS_RX_JUMBO`` u32 size of RX jumbo ring 894 ``ETHTOOL_A_RINGS_TX`` u32 size of TX ring 895 ``ETHTOOL_A_RINGS_RX_BUF_LEN`` u32 size of buffers on the ring 896 ``ETHTOOL_A_RINGS_TCP_DATA_SPLIT`` u8 TCP header / data split 897 ``ETHTOOL_A_RINGS_CQE_SIZE`` u32 Size of TX/RX CQE 898 ``ETHTOOL_A_RINGS_TX_PUSH`` u8 flag of TX Push mode 899 ``ETHTOOL_A_RINGS_RX_PUSH`` u8 flag of RX Push mode 900 ``ETHTOOL_A_RINGS_TX_PUSH_BUF_LEN`` u32 size of TX push buffer 901 ``ETHTOOL_A_RINGS_TX_PUSH_BUF_LEN_MAX`` u32 max size of TX push buffer 902 ``ETHTOOL_A_RINGS_HDS_THRESH`` u32 threshold of 903 header / data split 904 ``ETHTOOL_A_RINGS_HDS_THRESH_MAX`` u32 max threshold of 905 header / data split 906 ======================================= ====== =========================== 907 908``ETHTOOL_A_RINGS_TCP_DATA_SPLIT`` indicates whether the device is usable with 909page-flipping TCP zero-copy receive (``getsockopt(TCP_ZEROCOPY_RECEIVE)``). 910If enabled the device is configured to place frame headers and data into 911separate buffers. The device configuration must make it possible to receive 912full memory pages of data, for example because MTU is high enough or through 913HW-GRO. 914 915``ETHTOOL_A_RINGS_[RX|TX]_PUSH`` flag is used to enable descriptor fast 916path to send or receive packets. In ordinary path, driver fills descriptors in DRAM and 917notifies NIC hardware. In fast path, driver pushes descriptors to the device 918through MMIO writes, thus reducing the latency. However, enabling this feature 919may increase the CPU cost. Drivers may enforce additional per-packet 920eligibility checks (e.g. on packet size). 921 922``ETHTOOL_A_RINGS_TX_PUSH_BUF_LEN`` specifies the maximum number of bytes of a 923transmitted packet a driver can push directly to the underlying device 924('push' mode). Pushing some of the payload bytes to the device has the 925advantages of reducing latency for small packets by avoiding DMA mapping (same 926as ``ETHTOOL_A_RINGS_TX_PUSH`` parameter) as well as allowing the underlying 927device to process packet headers ahead of fetching its payload. 928This can help the device to make fast actions based on the packet's headers. 929This is similar to the "tx-copybreak" parameter, which copies the packet to a 930preallocated DMA memory area instead of mapping new memory. However, 931tx-push-buff parameter copies the packet directly to the device to allow the 932device to take faster actions on the packet. 933 934RINGS_SET 935========= 936 937Sets ring sizes like ``ETHTOOL_SRINGPARAM`` ioctl request. 938 939Request contents: 940 941 ==================================== ====== =========================== 942 ``ETHTOOL_A_RINGS_HEADER`` nested reply header 943 ``ETHTOOL_A_RINGS_RX`` u32 size of RX ring 944 ``ETHTOOL_A_RINGS_RX_MINI`` u32 size of RX mini ring 945 ``ETHTOOL_A_RINGS_RX_JUMBO`` u32 size of RX jumbo ring 946 ``ETHTOOL_A_RINGS_TX`` u32 size of TX ring 947 ``ETHTOOL_A_RINGS_RX_BUF_LEN`` u32 size of buffers on the ring 948 ``ETHTOOL_A_RINGS_TCP_DATA_SPLIT`` u8 TCP header / data split 949 ``ETHTOOL_A_RINGS_CQE_SIZE`` u32 Size of TX/RX CQE 950 ``ETHTOOL_A_RINGS_TX_PUSH`` u8 flag of TX Push mode 951 ``ETHTOOL_A_RINGS_RX_PUSH`` u8 flag of RX Push mode 952 ``ETHTOOL_A_RINGS_TX_PUSH_BUF_LEN`` u32 size of TX push buffer 953 ``ETHTOOL_A_RINGS_HDS_THRESH`` u32 threshold of header / data split 954 ==================================== ====== =========================== 955 956Kernel checks that requested ring sizes do not exceed limits reported by 957driver. Driver may impose additional constraints and may not support all 958attributes. 959 960 961``ETHTOOL_A_RINGS_CQE_SIZE`` specifies the completion queue event size. 962Completion queue events (CQE) are the events posted by NIC to indicate the 963completion status of a packet when the packet is sent (like send success or 964error) or received (like pointers to packet fragments). The CQE size parameter 965enables to modify the CQE size other than default size if NIC supports it. 966A bigger CQE can have more receive buffer pointers, and in turn the NIC can 967transfer a bigger frame from wire. Based on the NIC hardware, the overall 968completion queue size can be adjusted in the driver if CQE size is modified. 969 970``ETHTOOL_A_RINGS_HDS_THRESH`` specifies the threshold value of 971header / data split feature. If a received packet size is larger than this 972threshold value, header and data will be split. 973 974CHANNELS_GET 975============ 976 977Gets channel counts like ``ETHTOOL_GCHANNELS`` ioctl request. 978 979Request contents: 980 981 ==================================== ====== ========================== 982 ``ETHTOOL_A_CHANNELS_HEADER`` nested request header 983 ==================================== ====== ========================== 984 985Kernel response contents: 986 987 ===================================== ====== ========================== 988 ``ETHTOOL_A_CHANNELS_HEADER`` nested reply header 989 ``ETHTOOL_A_CHANNELS_RX_MAX`` u32 max receive channels 990 ``ETHTOOL_A_CHANNELS_TX_MAX`` u32 max transmit channels 991 ``ETHTOOL_A_CHANNELS_OTHER_MAX`` u32 max other channels 992 ``ETHTOOL_A_CHANNELS_COMBINED_MAX`` u32 max combined channels 993 ``ETHTOOL_A_CHANNELS_RX_COUNT`` u32 receive channel count 994 ``ETHTOOL_A_CHANNELS_TX_COUNT`` u32 transmit channel count 995 ``ETHTOOL_A_CHANNELS_OTHER_COUNT`` u32 other channel count 996 ``ETHTOOL_A_CHANNELS_COMBINED_COUNT`` u32 combined channel count 997 ===================================== ====== ========================== 998 999 1000CHANNELS_SET 1001============ 1002 1003Sets channel counts like ``ETHTOOL_SCHANNELS`` ioctl request. 1004 1005Request contents: 1006 1007 ===================================== ====== ========================== 1008 ``ETHTOOL_A_CHANNELS_HEADER`` nested request header 1009 ``ETHTOOL_A_CHANNELS_RX_COUNT`` u32 receive channel count 1010 ``ETHTOOL_A_CHANNELS_TX_COUNT`` u32 transmit channel count 1011 ``ETHTOOL_A_CHANNELS_OTHER_COUNT`` u32 other channel count 1012 ``ETHTOOL_A_CHANNELS_COMBINED_COUNT`` u32 combined channel count 1013 ===================================== ====== ========================== 1014 1015Kernel checks that requested channel counts do not exceed limits reported by 1016driver. Driver may impose additional constraints and may not support all 1017attributes. 1018 1019 1020COALESCE_GET 1021============ 1022 1023Gets coalescing parameters like ``ETHTOOL_GCOALESCE`` ioctl request. 1024 1025Request contents: 1026 1027 ==================================== ====== ========================== 1028 ``ETHTOOL_A_COALESCE_HEADER`` nested request header 1029 ==================================== ====== ========================== 1030 1031Kernel response contents: 1032 1033 =========================================== ====== ======================= 1034 ``ETHTOOL_A_COALESCE_HEADER`` nested reply header 1035 ``ETHTOOL_A_COALESCE_RX_USECS`` u32 delay (us), normal Rx 1036 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES`` u32 max packets, normal Rx 1037 ``ETHTOOL_A_COALESCE_RX_USECS_IRQ`` u32 delay (us), Rx in IRQ 1038 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ`` u32 max packets, Rx in IRQ 1039 ``ETHTOOL_A_COALESCE_TX_USECS`` u32 delay (us), normal Tx 1040 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES`` u32 max packets, normal Tx 1041 ``ETHTOOL_A_COALESCE_TX_USECS_IRQ`` u32 delay (us), Tx in IRQ 1042 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ`` u32 IRQ packets, Tx in IRQ 1043 ``ETHTOOL_A_COALESCE_STATS_BLOCK_USECS`` u32 delay of stats update 1044 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX`` bool adaptive Rx coalesce 1045 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX`` bool adaptive Tx coalesce 1046 ``ETHTOOL_A_COALESCE_PKT_RATE_LOW`` u32 threshold for low rate 1047 ``ETHTOOL_A_COALESCE_RX_USECS_LOW`` u32 delay (us), low Rx 1048 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW`` u32 max packets, low Rx 1049 ``ETHTOOL_A_COALESCE_TX_USECS_LOW`` u32 delay (us), low Tx 1050 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW`` u32 max packets, low Tx 1051 ``ETHTOOL_A_COALESCE_PKT_RATE_HIGH`` u32 threshold for high rate 1052 ``ETHTOOL_A_COALESCE_RX_USECS_HIGH`` u32 delay (us), high Rx 1053 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH`` u32 max packets, high Rx 1054 ``ETHTOOL_A_COALESCE_TX_USECS_HIGH`` u32 delay (us), high Tx 1055 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH`` u32 max packets, high Tx 1056 ``ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL`` u32 rate sampling interval 1057 ``ETHTOOL_A_COALESCE_USE_CQE_TX`` bool timer reset mode, Tx 1058 ``ETHTOOL_A_COALESCE_USE_CQE_RX`` bool timer reset mode, Rx 1059 ``ETHTOOL_A_COALESCE_TX_AGGR_MAX_BYTES`` u32 max aggr size, Tx 1060 ``ETHTOOL_A_COALESCE_TX_AGGR_MAX_FRAMES`` u32 max aggr packets, Tx 1061 ``ETHTOOL_A_COALESCE_TX_AGGR_TIME_USECS`` u32 time (us), aggr, Tx 1062 ``ETHTOOL_A_COALESCE_RX_PROFILE`` nested profile of DIM, Rx 1063 ``ETHTOOL_A_COALESCE_TX_PROFILE`` nested profile of DIM, Tx 1064 =========================================== ====== ======================= 1065 1066Attributes are only included in reply if their value is not zero or the 1067corresponding bit in ``ethtool_ops::supported_coalesce_params`` is set (i.e. 1068they are declared as supported by driver). 1069 1070Timer reset mode (``ETHTOOL_A_COALESCE_USE_CQE_TX`` and 1071``ETHTOOL_A_COALESCE_USE_CQE_RX``) controls the interaction between packet 1072arrival and the various time based delay parameters. By default timers are 1073expected to limit the max delay between any packet arrival/departure and a 1074corresponding interrupt. In this mode timer should be started by packet 1075arrival (sometimes delivery of previous interrupt) and reset when interrupt 1076is delivered. 1077Setting the appropriate attribute to 1 will enable ``CQE`` mode, where 1078each packet event resets the timer. In this mode timer is used to force 1079the interrupt if queue goes idle, while busy queues depend on the packet 1080limit to trigger interrupts. 1081 1082Tx aggregation consists of copying frames into a contiguous buffer so that they 1083can be submitted as a single IO operation. ``ETHTOOL_A_COALESCE_TX_AGGR_MAX_BYTES`` 1084describes the maximum size in bytes for the submitted buffer. 1085``ETHTOOL_A_COALESCE_TX_AGGR_MAX_FRAMES`` describes the maximum number of frames 1086that can be aggregated into a single buffer. 1087``ETHTOOL_A_COALESCE_TX_AGGR_TIME_USECS`` describes the amount of time in usecs, 1088counted since the first packet arrival in an aggregated block, after which the 1089block should be sent. 1090This feature is mainly of interest for specific USB devices which does not cope 1091well with frequent small-sized URBs transmissions. 1092 1093``ETHTOOL_A_COALESCE_RX_PROFILE`` and ``ETHTOOL_A_COALESCE_TX_PROFILE`` refer 1094to DIM parameters, see `Generic Network Dynamic Interrupt Moderation (Net DIM) 1095<https://www.kernel.org/doc/Documentation/networking/net_dim.rst>`_. 1096 1097COALESCE_SET 1098============ 1099 1100Sets coalescing parameters like ``ETHTOOL_SCOALESCE`` ioctl request. 1101 1102Request contents: 1103 1104 =========================================== ====== ======================= 1105 ``ETHTOOL_A_COALESCE_HEADER`` nested request header 1106 ``ETHTOOL_A_COALESCE_RX_USECS`` u32 delay (us), normal Rx 1107 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES`` u32 max packets, normal Rx 1108 ``ETHTOOL_A_COALESCE_RX_USECS_IRQ`` u32 delay (us), Rx in IRQ 1109 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ`` u32 max packets, Rx in IRQ 1110 ``ETHTOOL_A_COALESCE_TX_USECS`` u32 delay (us), normal Tx 1111 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES`` u32 max packets, normal Tx 1112 ``ETHTOOL_A_COALESCE_TX_USECS_IRQ`` u32 delay (us), Tx in IRQ 1113 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ`` u32 IRQ packets, Tx in IRQ 1114 ``ETHTOOL_A_COALESCE_STATS_BLOCK_USECS`` u32 delay of stats update 1115 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX`` bool adaptive Rx coalesce 1116 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX`` bool adaptive Tx coalesce 1117 ``ETHTOOL_A_COALESCE_PKT_RATE_LOW`` u32 threshold for low rate 1118 ``ETHTOOL_A_COALESCE_RX_USECS_LOW`` u32 delay (us), low Rx 1119 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW`` u32 max packets, low Rx 1120 ``ETHTOOL_A_COALESCE_TX_USECS_LOW`` u32 delay (us), low Tx 1121 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW`` u32 max packets, low Tx 1122 ``ETHTOOL_A_COALESCE_PKT_RATE_HIGH`` u32 threshold for high rate 1123 ``ETHTOOL_A_COALESCE_RX_USECS_HIGH`` u32 delay (us), high Rx 1124 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH`` u32 max packets, high Rx 1125 ``ETHTOOL_A_COALESCE_TX_USECS_HIGH`` u32 delay (us), high Tx 1126 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH`` u32 max packets, high Tx 1127 ``ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL`` u32 rate sampling interval 1128 ``ETHTOOL_A_COALESCE_USE_CQE_TX`` bool timer reset mode, Tx 1129 ``ETHTOOL_A_COALESCE_USE_CQE_RX`` bool timer reset mode, Rx 1130 ``ETHTOOL_A_COALESCE_TX_AGGR_MAX_BYTES`` u32 max aggr size, Tx 1131 ``ETHTOOL_A_COALESCE_TX_AGGR_MAX_FRAMES`` u32 max aggr packets, Tx 1132 ``ETHTOOL_A_COALESCE_TX_AGGR_TIME_USECS`` u32 time (us), aggr, Tx 1133 ``ETHTOOL_A_COALESCE_RX_PROFILE`` nested profile of DIM, Rx 1134 ``ETHTOOL_A_COALESCE_TX_PROFILE`` nested profile of DIM, Tx 1135 =========================================== ====== ======================= 1136 1137Request is rejected if it attributes declared as unsupported by driver (i.e. 1138such that the corresponding bit in ``ethtool_ops::supported_coalesce_params`` 1139is not set), regardless of their values. Driver may impose additional 1140constraints on coalescing parameters and their values. 1141 1142Compared to requests issued via the ``ioctl()`` netlink version of this request 1143will try harder to make sure that values specified by the user have been applied 1144and may call the driver twice. 1145 1146 1147PAUSE_GET 1148========= 1149 1150Gets pause frame settings like ``ETHTOOL_GPAUSEPARAM`` ioctl request. 1151 1152Request contents: 1153 1154 ===================================== ====== ========================== 1155 ``ETHTOOL_A_PAUSE_HEADER`` nested request header 1156 ``ETHTOOL_A_PAUSE_STATS_SRC`` u32 source of statistics 1157 ===================================== ====== ========================== 1158 1159``ETHTOOL_A_PAUSE_STATS_SRC`` is optional. It takes values from: 1160 1161.. kernel-doc:: include/uapi/linux/ethtool.h 1162 :identifiers: ethtool_mac_stats_src 1163 1164If absent from the request, stats will be provided with 1165an ``ETHTOOL_A_PAUSE_STATS_SRC`` attribute in the response equal to 1166``ETHTOOL_MAC_STATS_SRC_AGGREGATE``. 1167 1168Kernel response contents: 1169 1170 ===================================== ====== ========================== 1171 ``ETHTOOL_A_PAUSE_HEADER`` nested request header 1172 ``ETHTOOL_A_PAUSE_AUTONEG`` bool pause autonegotiation 1173 ``ETHTOOL_A_PAUSE_RX`` bool receive pause frames 1174 ``ETHTOOL_A_PAUSE_TX`` bool transmit pause frames 1175 ``ETHTOOL_A_PAUSE_STATS`` nested pause statistics 1176 ===================================== ====== ========================== 1177 1178``ETHTOOL_A_PAUSE_STATS`` are reported if ``ETHTOOL_FLAG_STATS`` was set 1179in ``ETHTOOL_A_HEADER_FLAGS``. 1180It will be empty if driver did not report any statistics. Drivers fill in 1181the statistics in the following structure: 1182 1183.. kernel-doc:: include/linux/ethtool.h 1184 :identifiers: ethtool_pause_stats 1185 1186Each member has a corresponding attribute defined. 1187 1188PAUSE_SET 1189========= 1190 1191Sets pause parameters like ``ETHTOOL_GPAUSEPARAM`` ioctl request. 1192 1193Request contents: 1194 1195 ===================================== ====== ========================== 1196 ``ETHTOOL_A_PAUSE_HEADER`` nested request header 1197 ``ETHTOOL_A_PAUSE_AUTONEG`` bool pause autonegotiation 1198 ``ETHTOOL_A_PAUSE_RX`` bool receive pause frames 1199 ``ETHTOOL_A_PAUSE_TX`` bool transmit pause frames 1200 ===================================== ====== ========================== 1201 1202 1203EEE_GET 1204======= 1205 1206Gets Energy Efficient Ethernet settings like ``ETHTOOL_GEEE`` ioctl request. 1207 1208Request contents: 1209 1210 ===================================== ====== ========================== 1211 ``ETHTOOL_A_EEE_HEADER`` nested request header 1212 ===================================== ====== ========================== 1213 1214Kernel response contents: 1215 1216 ===================================== ====== ========================== 1217 ``ETHTOOL_A_EEE_HEADER`` nested request header 1218 ``ETHTOOL_A_EEE_MODES_OURS`` bool supported/advertised modes 1219 ``ETHTOOL_A_EEE_MODES_PEER`` bool peer advertised link modes 1220 ``ETHTOOL_A_EEE_ACTIVE`` bool EEE is actively used 1221 ``ETHTOOL_A_EEE_ENABLED`` bool EEE is enabled 1222 ``ETHTOOL_A_EEE_TX_LPI_ENABLED`` bool Tx lpi enabled 1223 ``ETHTOOL_A_EEE_TX_LPI_TIMER`` u32 Tx lpi timeout (in us) 1224 ===================================== ====== ========================== 1225 1226In ``ETHTOOL_A_EEE_MODES_OURS``, mask consists of link modes for which EEE is 1227enabled, value of link modes for which EEE is advertised. Link modes for which 1228peer advertises EEE are listed in ``ETHTOOL_A_EEE_MODES_PEER`` (no mask). The 1229netlink interface allows reporting EEE status for all link modes but only 1230first 32 are provided by the ``ethtool_ops`` callback. 1231 1232 1233EEE_SET 1234======= 1235 1236Sets Energy Efficient Ethernet parameters like ``ETHTOOL_SEEE`` ioctl request. 1237 1238Request contents: 1239 1240 ===================================== ====== ========================== 1241 ``ETHTOOL_A_EEE_HEADER`` nested request header 1242 ``ETHTOOL_A_EEE_MODES_OURS`` bool advertised modes 1243 ``ETHTOOL_A_EEE_ENABLED`` bool EEE is enabled 1244 ``ETHTOOL_A_EEE_TX_LPI_ENABLED`` bool Tx lpi enabled 1245 ``ETHTOOL_A_EEE_TX_LPI_TIMER`` u32 Tx lpi timeout (in us) 1246 ===================================== ====== ========================== 1247 1248``ETHTOOL_A_EEE_MODES_OURS`` is used to either list link modes to advertise 1249EEE for (if there is no mask) or specify changes to the list (if there is 1250a mask). The netlink interface allows reporting EEE status for all link modes 1251but only first 32 can be set at the moment as that is what the ``ethtool_ops`` 1252callback supports. 1253 1254 1255TSINFO_GET 1256========== 1257 1258Gets timestamping information like ``ETHTOOL_GET_TS_INFO`` ioctl request. 1259 1260Request contents: 1261 1262 ======================================== ====== ============================ 1263 ``ETHTOOL_A_TSINFO_HEADER`` nested request header 1264 ``ETHTOOL_A_TSINFO_HWTSTAMP_PROVIDER`` nested PTP hw clock provider 1265 ======================================== ====== ============================ 1266 1267Kernel response contents: 1268 1269 ===================================== ====== ========================== 1270 ``ETHTOOL_A_TSINFO_HEADER`` nested request header 1271 ``ETHTOOL_A_TSINFO_TIMESTAMPING`` bitset SO_TIMESTAMPING flags 1272 ``ETHTOOL_A_TSINFO_TX_TYPES`` bitset supported Tx types 1273 ``ETHTOOL_A_TSINFO_RX_FILTERS`` bitset supported Rx filters 1274 ``ETHTOOL_A_TSINFO_PHC_INDEX`` u32 PTP hw clock index 1275 ``ETHTOOL_A_TSINFO_STATS`` nested HW timestamping statistics 1276 ===================================== ====== ========================== 1277 1278``ETHTOOL_A_TSINFO_PHC_INDEX`` is absent if there is no associated PHC (there 1279is no special value for this case). The bitset attributes are omitted if they 1280would be empty (no bit set). 1281 1282Additional hardware timestamping statistics response contents: 1283 1284 ===================================== ====== =================================== 1285 ``ETHTOOL_A_TS_STAT_TX_PKTS`` uint Packets with Tx HW timestamps 1286 ``ETHTOOL_A_TS_STAT_TX_LOST`` uint Tx HW timestamp not arrived count 1287 ``ETHTOOL_A_TS_STAT_TX_ERR`` uint HW error request Tx timestamp count 1288 ===================================== ====== =================================== 1289 1290CABLE_TEST 1291========== 1292 1293Start a cable test. 1294 1295Request contents: 1296 1297 ==================================== ====== ========================== 1298 ``ETHTOOL_A_CABLE_TEST_HEADER`` nested request header 1299 ==================================== ====== ========================== 1300 1301Notification contents: 1302 1303An Ethernet cable typically contains 1, 2 or 4 pairs. The length of 1304the pair can only be measured when there is a fault in the pair and 1305hence a reflection. Information about the fault may not be available, 1306depending on the specific hardware. Hence the contents of the notify 1307message are mostly optional. The attributes can be repeated an 1308arbitrary number of times, in an arbitrary order, for an arbitrary 1309number of pairs. 1310 1311The example shows the notification sent when the test is completed for 1312a T2 cable, i.e. two pairs. One pair is OK and hence has no length 1313information. The second pair has a fault and does have length 1314information. 1315 1316 +---------------------------------------------+--------+---------------------+ 1317 | ``ETHTOOL_A_CABLE_TEST_HEADER`` | nested | reply header | 1318 +---------------------------------------------+--------+---------------------+ 1319 | ``ETHTOOL_A_CABLE_TEST_STATUS`` | u8 | completed | 1320 +---------------------------------------------+--------+---------------------+ 1321 | ``ETHTOOL_A_CABLE_TEST_NTF_NEST`` | nested | all the results | 1322 +-+-------------------------------------------+--------+---------------------+ 1323 | | ``ETHTOOL_A_CABLE_NEST_RESULT`` | nested | cable test result | 1324 +-+-+-----------------------------------------+--------+---------------------+ 1325 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number | 1326 +-+-+-----------------------------------------+--------+---------------------+ 1327 | | | ``ETHTOOL_A_CABLE_RESULTS_CODE`` | u8 | result code | 1328 +-+-+-----------------------------------------+--------+---------------------+ 1329 | | ``ETHTOOL_A_CABLE_NEST_RESULT`` | nested | cable test results | 1330 +-+-+-----------------------------------------+--------+---------------------+ 1331 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number | 1332 +-+-+-----------------------------------------+--------+---------------------+ 1333 | | | ``ETHTOOL_A_CABLE_RESULTS_CODE`` | u8 | result code | 1334 +-+-+-----------------------------------------+--------+---------------------+ 1335 | | | ``ETHTOOL_A_CABLE_RESULT_SRC`` | u32 | information source | 1336 +-+-+-----------------------------------------+--------+---------------------+ 1337 | | ``ETHTOOL_A_CABLE_NEST_FAULT_LENGTH`` | nested | cable length | 1338 +-+-+-----------------------------------------+--------+---------------------+ 1339 | | | ``ETHTOOL_A_CABLE_FAULT_LENGTH_PAIR`` | u8 | pair number | 1340 +-+-+-----------------------------------------+--------+---------------------+ 1341 | | | ``ETHTOOL_A_CABLE_FAULT_LENGTH_CM`` | u32 | length in cm | 1342 +-+-+-----------------------------------------+--------+---------------------+ 1343 | | | ``ETHTOOL_A_CABLE_FAULT_LENGTH_SRC`` | u32 | information source | 1344 +-+-+-----------------------------------------+--------+---------------------+ 1345 1346 1347CABLE_TEST TDR 1348============== 1349 1350Start a cable test and report raw TDR data 1351 1352Request contents: 1353 1354 +--------------------------------------------+--------+-----------------------+ 1355 | ``ETHTOOL_A_CABLE_TEST_TDR_HEADER`` | nested | reply header | 1356 +--------------------------------------------+--------+-----------------------+ 1357 | ``ETHTOOL_A_CABLE_TEST_TDR_CFG`` | nested | test configuration | 1358 +-+------------------------------------------+--------+-----------------------+ 1359 | | ``ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE`` | u32 | first data distance | 1360 +-+-+----------------------------------------+--------+-----------------------+ 1361 | | ``ETHTOOL_A_CABLE_STEP_LAST_DISTANCE`` | u32 | last data distance | 1362 +-+-+----------------------------------------+--------+-----------------------+ 1363 | | ``ETHTOOL_A_CABLE_STEP_STEP_DISTANCE`` | u32 | distance of each step | 1364 +-+-+----------------------------------------+--------+-----------------------+ 1365 | | ``ETHTOOL_A_CABLE_TEST_TDR_CFG_PAIR`` | u8 | pair to test | 1366 +-+-+----------------------------------------+--------+-----------------------+ 1367 1368The ETHTOOL_A_CABLE_TEST_TDR_CFG is optional, as well as all members 1369of the nest. All distances are expressed in centimeters. The PHY takes 1370the distances as a guide, and rounds to the nearest distance it 1371actually supports. If a pair is passed, only that one pair will be 1372tested. Otherwise all pairs are tested. 1373 1374Notification contents: 1375 1376Raw TDR data is gathered by sending a pulse down the cable and 1377recording the amplitude of the reflected pulse for a given distance. 1378 1379It can take a number of seconds to collect TDR data, especial if the 1380full 100 meters is probed at 1 meter intervals. When the test is 1381started a notification will be sent containing just 1382ETHTOOL_A_CABLE_TEST_TDR_STATUS with the value 1383ETHTOOL_A_CABLE_TEST_NTF_STATUS_STARTED. 1384 1385When the test has completed a second notification will be sent 1386containing ETHTOOL_A_CABLE_TEST_TDR_STATUS with the value 1387ETHTOOL_A_CABLE_TEST_NTF_STATUS_COMPLETED and the TDR data. 1388 1389The message may optionally contain the amplitude of the pulse send 1390down the cable. This is measured in mV. A reflection should not be 1391bigger than transmitted pulse. 1392 1393Before the raw TDR data should be an ETHTOOL_A_CABLE_TDR_NEST_STEP 1394nest containing information about the distance along the cable for the 1395first reading, the last reading, and the step between each 1396reading. Distances are measured in centimeters. These should be the 1397exact values the PHY used. These may be different to what the user 1398requested, if the native measurement resolution is greater than 1 cm. 1399 1400For each step along the cable, a ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE is 1401used to report the amplitude of the reflection for a given pair. 1402 1403 +---------------------------------------------+--------+----------------------+ 1404 | ``ETHTOOL_A_CABLE_TEST_TDR_HEADER`` | nested | reply header | 1405 +---------------------------------------------+--------+----------------------+ 1406 | ``ETHTOOL_A_CABLE_TEST_TDR_STATUS`` | u8 | completed | 1407 +---------------------------------------------+--------+----------------------+ 1408 | ``ETHTOOL_A_CABLE_TEST_TDR_NTF_NEST`` | nested | all the results | 1409 +-+-------------------------------------------+--------+----------------------+ 1410 | | ``ETHTOOL_A_CABLE_TDR_NEST_PULSE`` | nested | TX Pulse amplitude | 1411 +-+-+-----------------------------------------+--------+----------------------+ 1412 | | | ``ETHTOOL_A_CABLE_PULSE_mV`` | s16 | Pulse amplitude | 1413 +-+-+-----------------------------------------+--------+----------------------+ 1414 | | ``ETHTOOL_A_CABLE_NEST_STEP`` | nested | TDR step info | 1415 +-+-+-----------------------------------------+--------+----------------------+ 1416 | | | ``ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE`` | u32 | First data distance | 1417 +-+-+-----------------------------------------+--------+----------------------+ 1418 | | | ``ETHTOOL_A_CABLE_STEP_LAST_DISTANCE`` | u32 | Last data distance | 1419 +-+-+-----------------------------------------+--------+----------------------+ 1420 | | | ``ETHTOOL_A_CABLE_STEP_STEP_DISTANCE`` | u32 | distance of each step| 1421 +-+-+-----------------------------------------+--------+----------------------+ 1422 | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude | 1423 +-+-+-----------------------------------------+--------+----------------------+ 1424 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number | 1425 +-+-+-----------------------------------------+--------+----------------------+ 1426 | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude | 1427 +-+-+-----------------------------------------+--------+----------------------+ 1428 | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude | 1429 +-+-+-----------------------------------------+--------+----------------------+ 1430 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number | 1431 +-+-+-----------------------------------------+--------+----------------------+ 1432 | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude | 1433 +-+-+-----------------------------------------+--------+----------------------+ 1434 | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude | 1435 +-+-+-----------------------------------------+--------+----------------------+ 1436 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number | 1437 +-+-+-----------------------------------------+--------+----------------------+ 1438 | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude | 1439 +-+-+-----------------------------------------+--------+----------------------+ 1440 1441TUNNEL_INFO 1442=========== 1443 1444Gets information about the tunnel state NIC is aware of. 1445 1446Request contents: 1447 1448 ===================================== ====== ========================== 1449 ``ETHTOOL_A_TUNNEL_INFO_HEADER`` nested request header 1450 ===================================== ====== ========================== 1451 1452Kernel response contents: 1453 1454 +---------------------------------------------+--------+---------------------+ 1455 | ``ETHTOOL_A_TUNNEL_INFO_HEADER`` | nested | reply header | 1456 +---------------------------------------------+--------+---------------------+ 1457 | ``ETHTOOL_A_TUNNEL_INFO_UDP_PORTS`` | nested | all UDP port tables | 1458 +-+-------------------------------------------+--------+---------------------+ 1459 | | ``ETHTOOL_A_TUNNEL_UDP_TABLE`` | nested | one UDP port table | 1460 +-+-+-----------------------------------------+--------+---------------------+ 1461 | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_SIZE`` | u32 | max size of the | 1462 | | | | | table | 1463 +-+-+-----------------------------------------+--------+---------------------+ 1464 | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES`` | bitset | tunnel types which | 1465 | | | | | table can hold | 1466 +-+-+-----------------------------------------+--------+---------------------+ 1467 | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_ENTRY`` | nested | offloaded UDP port | 1468 +-+-+-+---------------------------------------+--------+---------------------+ 1469 | | | | ``ETHTOOL_A_TUNNEL_UDP_ENTRY_PORT`` | be16 | UDP port | 1470 +-+-+-+---------------------------------------+--------+---------------------+ 1471 | | | | ``ETHTOOL_A_TUNNEL_UDP_ENTRY_TYPE`` | u32 | tunnel type | 1472 +-+-+-+---------------------------------------+--------+---------------------+ 1473 1474For UDP tunnel table empty ``ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES`` indicates that 1475the table contains static entries, hard-coded by the NIC. 1476 1477FEC_GET 1478======= 1479 1480Gets FEC configuration and state like ``ETHTOOL_GFECPARAM`` ioctl request. 1481 1482Request contents: 1483 1484 ===================================== ====== ========================== 1485 ``ETHTOOL_A_FEC_HEADER`` nested request header 1486 ===================================== ====== ========================== 1487 1488Kernel response contents: 1489 1490 ===================================== ====== ========================== 1491 ``ETHTOOL_A_FEC_HEADER`` nested request header 1492 ``ETHTOOL_A_FEC_MODES`` bitset configured modes 1493 ``ETHTOOL_A_FEC_AUTO`` bool FEC mode auto selection 1494 ``ETHTOOL_A_FEC_ACTIVE`` u32 index of active FEC mode 1495 ``ETHTOOL_A_FEC_STATS`` nested FEC statistics 1496 ===================================== ====== ========================== 1497 1498``ETHTOOL_A_FEC_ACTIVE`` is the bit index of the FEC link mode currently 1499active on the interface. This attribute may not be present if device does 1500not support FEC. 1501 1502``ETHTOOL_A_FEC_MODES`` and ``ETHTOOL_A_FEC_AUTO`` are only meaningful when 1503autonegotiation is disabled. If ``ETHTOOL_A_FEC_AUTO`` is non-zero driver will 1504select the FEC mode automatically based on the parameters of the SFP module. 1505This is equivalent to the ``ETHTOOL_FEC_AUTO`` bit of the ioctl interface. 1506``ETHTOOL_A_FEC_MODES`` carry the current FEC configuration using link mode 1507bits (rather than old ``ETHTOOL_FEC_*`` bits). 1508 1509``ETHTOOL_A_FEC_STATS`` are reported if ``ETHTOOL_FLAG_STATS`` was set in 1510``ETHTOOL_A_HEADER_FLAGS``. 1511Each attribute carries an array of 64bit statistics. First entry in the array 1512contains the total number of events on the port, while the following entries 1513are counters corresponding to lanes/PCS instances. The number of entries in 1514the array will be: 1515 1516+--------------+---------------------------------------------+ 1517| `0` | device does not support FEC statistics | 1518+--------------+---------------------------------------------+ 1519| `1` | device does not support per-lane break down | 1520+--------------+---------------------------------------------+ 1521| `1 + #lanes` | device has full support for FEC stats | 1522+--------------+---------------------------------------------+ 1523 1524Drivers fill in the statistics in the following structure: 1525 1526.. kernel-doc:: include/linux/ethtool.h 1527 :identifiers: ethtool_fec_stats 1528 1529FEC_SET 1530======= 1531 1532Sets FEC parameters like ``ETHTOOL_SFECPARAM`` ioctl request. 1533 1534Request contents: 1535 1536 ===================================== ====== ========================== 1537 ``ETHTOOL_A_FEC_HEADER`` nested request header 1538 ``ETHTOOL_A_FEC_MODES`` bitset configured modes 1539 ``ETHTOOL_A_FEC_AUTO`` bool FEC mode auto selection 1540 ===================================== ====== ========================== 1541 1542``FEC_SET`` is only meaningful when autonegotiation is disabled. Otherwise 1543FEC mode is selected as part of autonegotiation. 1544 1545``ETHTOOL_A_FEC_MODES`` selects which FEC mode should be used. It's recommended 1546to set only one bit, if multiple bits are set driver may choose between them 1547in an implementation specific way. 1548 1549``ETHTOOL_A_FEC_AUTO`` requests the driver to choose FEC mode based on SFP 1550module parameters. This does not mean autonegotiation. 1551 1552MODULE_EEPROM_GET 1553================= 1554 1555Fetch module EEPROM data dump. 1556This interface is designed to allow dumps of at most 1/2 page at once. This 1557means only dumps of 128 (or less) bytes are allowed, without crossing half page 1558boundary located at offset 128. For pages other than 0 only high 128 bytes are 1559accessible. 1560 1561Request contents: 1562 1563 ======================================= ====== ========================== 1564 ``ETHTOOL_A_MODULE_EEPROM_HEADER`` nested request header 1565 ``ETHTOOL_A_MODULE_EEPROM_OFFSET`` u32 offset within a page 1566 ``ETHTOOL_A_MODULE_EEPROM_LENGTH`` u32 amount of bytes to read 1567 ``ETHTOOL_A_MODULE_EEPROM_PAGE`` u8 page number 1568 ``ETHTOOL_A_MODULE_EEPROM_BANK`` u8 bank number 1569 ``ETHTOOL_A_MODULE_EEPROM_I2C_ADDRESS`` u8 page I2C address 1570 ======================================= ====== ========================== 1571 1572If ``ETHTOOL_A_MODULE_EEPROM_BANK`` is not specified, bank 0 is assumed. 1573 1574Kernel response contents: 1575 1576 +---------------------------------------------+--------+---------------------+ 1577 | ``ETHTOOL_A_MODULE_EEPROM_HEADER`` | nested | reply header | 1578 +---------------------------------------------+--------+---------------------+ 1579 | ``ETHTOOL_A_MODULE_EEPROM_DATA`` | binary | array of bytes from | 1580 | | | module EEPROM | 1581 +---------------------------------------------+--------+---------------------+ 1582 1583``ETHTOOL_A_MODULE_EEPROM_DATA`` has an attribute length equal to the amount of 1584bytes driver actually read. 1585 1586STATS_GET 1587========= 1588 1589Get standard statistics for the interface. Note that this is not 1590a re-implementation of ``ETHTOOL_GSTATS`` which exposed driver-defined 1591stats. 1592 1593Request contents: 1594 1595 ======================================= ====== ========================== 1596 ``ETHTOOL_A_STATS_HEADER`` nested request header 1597 ``ETHTOOL_A_STATS_SRC`` u32 source of statistics 1598 ``ETHTOOL_A_STATS_GROUPS`` bitset requested groups of stats 1599 ======================================= ====== ========================== 1600 1601Kernel response contents: 1602 1603 +-----------------------------------+--------+--------------------------------+ 1604 | ``ETHTOOL_A_STATS_HEADER`` | nested | reply header | 1605 +-----------------------------------+--------+--------------------------------+ 1606 | ``ETHTOOL_A_STATS_SRC`` | u32 | source of statistics | 1607 +-----------------------------------+--------+--------------------------------+ 1608 | ``ETHTOOL_A_STATS_GRP`` | nested | one or more group of stats | 1609 +-+---------------------------------+--------+--------------------------------+ 1610 | | ``ETHTOOL_A_STATS_GRP_ID`` | u32 | group ID - ``ETHTOOL_STATS_*`` | 1611 +-+---------------------------------+--------+--------------------------------+ 1612 | | ``ETHTOOL_A_STATS_GRP_SS_ID`` | u32 | string set ID for names | 1613 +-+---------------------------------+--------+--------------------------------+ 1614 | | ``ETHTOOL_A_STATS_GRP_STAT`` | nested | nest containing a statistic | 1615 +-+---------------------------------+--------+--------------------------------+ 1616 | | ``ETHTOOL_A_STATS_GRP_HIST_RX`` | nested | histogram statistic (Rx) | 1617 +-+---------------------------------+--------+--------------------------------+ 1618 | | ``ETHTOOL_A_STATS_GRP_HIST_TX`` | nested | histogram statistic (Tx) | 1619 +-+---------------------------------+--------+--------------------------------+ 1620 1621Users specify which groups of statistics they are requesting via 1622the ``ETHTOOL_A_STATS_GROUPS`` bitset. Currently defined values are: 1623 1624 ====================== ======== =============================================== 1625 ETHTOOL_STATS_ETH_MAC eth-mac Basic IEEE 802.3 MAC statistics (30.3.1.1.*) 1626 ETHTOOL_STATS_ETH_PHY eth-phy Basic IEEE 802.3 PHY statistics (30.3.2.1.*) 1627 ETHTOOL_STATS_ETH_CTRL eth-ctrl Basic IEEE 802.3 MAC Ctrl statistics (30.3.3.*) 1628 ETHTOOL_STATS_RMON rmon RMON (RFC 2819) statistics 1629 ETHTOOL_STATS_PHY phy Additional PHY statistics, not defined by IEEE 1630 ====================== ======== =============================================== 1631 1632Each group should have a corresponding ``ETHTOOL_A_STATS_GRP`` in the reply. 1633``ETHTOOL_A_STATS_GRP_ID`` identifies which group's statistics nest contains. 1634``ETHTOOL_A_STATS_GRP_SS_ID`` identifies the string set ID for the names of 1635the statistics in the group, if available. 1636 1637Statistics are added to the ``ETHTOOL_A_STATS_GRP`` nest under 1638``ETHTOOL_A_STATS_GRP_STAT``. ``ETHTOOL_A_STATS_GRP_STAT`` should contain 1639single 8 byte (u64) attribute inside - the type of that attribute is 1640the statistic ID and the value is the value of the statistic. 1641Each group has its own interpretation of statistic IDs. 1642Attribute IDs correspond to strings from the string set identified 1643by ``ETHTOOL_A_STATS_GRP_SS_ID``. Complex statistics (such as RMON histogram 1644entries) are also listed inside ``ETHTOOL_A_STATS_GRP`` and do not have 1645a string defined in the string set. 1646 1647RMON "histogram" counters count number of packets within given size range. 1648Because RFC does not specify the ranges beyond the standard 1518 MTU devices 1649differ in definition of buckets. For this reason the definition of packet ranges 1650is left to each driver. 1651 1652``ETHTOOL_A_STATS_GRP_HIST_RX`` and ``ETHTOOL_A_STATS_GRP_HIST_TX`` nests 1653contain the following attributes: 1654 1655 ================================= ====== =================================== 1656 ETHTOOL_A_STATS_RMON_HIST_BKT_LOW u32 low bound of the packet size bucket 1657 ETHTOOL_A_STATS_RMON_HIST_BKT_HI u32 high bound of the bucket 1658 ETHTOOL_A_STATS_RMON_HIST_VAL u64 packet counter 1659 ================================= ====== =================================== 1660 1661Low and high bounds are inclusive, for example: 1662 1663 ============================= ==== ==== 1664 RFC statistic low high 1665 ============================= ==== ==== 1666 etherStatsPkts64Octets 0 64 1667 etherStatsPkts512to1023Octets 512 1023 1668 ============================= ==== ==== 1669 1670``ETHTOOL_A_STATS_SRC`` is optional. Similar to ``PAUSE_GET``, it takes values 1671from ``enum ethtool_mac_stats_src``. If absent from the request, stats will be 1672provided with an ``ETHTOOL_A_STATS_SRC`` attribute in the response equal to 1673``ETHTOOL_MAC_STATS_SRC_AGGREGATE``. 1674 1675PHC_VCLOCKS_GET 1676=============== 1677 1678Query device PHC virtual clocks information. 1679 1680Request contents: 1681 1682 ==================================== ====== ========================== 1683 ``ETHTOOL_A_PHC_VCLOCKS_HEADER`` nested request header 1684 ==================================== ====== ========================== 1685 1686Kernel response contents: 1687 1688 ==================================== ====== ========================== 1689 ``ETHTOOL_A_PHC_VCLOCKS_HEADER`` nested reply header 1690 ``ETHTOOL_A_PHC_VCLOCKS_NUM`` u32 PHC virtual clocks number 1691 ``ETHTOOL_A_PHC_VCLOCKS_INDEX`` s32 PHC index array 1692 ==================================== ====== ========================== 1693 1694MODULE_GET 1695========== 1696 1697Gets transceiver module parameters. 1698 1699Request contents: 1700 1701 ===================================== ====== ========================== 1702 ``ETHTOOL_A_MODULE_HEADER`` nested request header 1703 ===================================== ====== ========================== 1704 1705Kernel response contents: 1706 1707 ====================================== ====== ========================== 1708 ``ETHTOOL_A_MODULE_HEADER`` nested reply header 1709 ``ETHTOOL_A_MODULE_POWER_MODE_POLICY`` u8 power mode policy 1710 ``ETHTOOL_A_MODULE_POWER_MODE`` u8 operational power mode 1711 ====================================== ====== ========================== 1712 1713The optional ``ETHTOOL_A_MODULE_POWER_MODE_POLICY`` attribute encodes the 1714transceiver module power mode policy enforced by the host. The default policy 1715is driver-dependent, but "auto" is the recommended default and it should be 1716implemented by new drivers and drivers where conformance to a legacy behavior 1717is not critical. 1718 1719The optional ``ETHTHOOL_A_MODULE_POWER_MODE`` attribute encodes the operational 1720power mode policy of the transceiver module. It is only reported when a module 1721is plugged-in. Possible values are: 1722 1723.. kernel-doc:: include/uapi/linux/ethtool.h 1724 :identifiers: ethtool_module_power_mode 1725 1726MODULE_SET 1727========== 1728 1729Sets transceiver module parameters. 1730 1731Request contents: 1732 1733 ====================================== ====== ========================== 1734 ``ETHTOOL_A_MODULE_HEADER`` nested request header 1735 ``ETHTOOL_A_MODULE_POWER_MODE_POLICY`` u8 power mode policy 1736 ====================================== ====== ========================== 1737 1738When set, the optional ``ETHTOOL_A_MODULE_POWER_MODE_POLICY`` attribute is used 1739to set the transceiver module power policy enforced by the host. Possible 1740values are: 1741 1742.. kernel-doc:: include/uapi/linux/ethtool.h 1743 :identifiers: ethtool_module_power_mode_policy 1744 1745For SFF-8636 modules, low power mode is forced by the host according to table 17466-10 in revision 2.10a of the specification. 1747 1748For CMIS modules, low power mode is forced by the host according to table 6-12 1749in revision 5.0 of the specification. 1750 1751PSE_GET 1752======= 1753 1754Gets PSE attributes. 1755 1756Request contents: 1757 1758 ===================================== ====== ========================== 1759 ``ETHTOOL_A_PSE_HEADER`` nested request header 1760 ===================================== ====== ========================== 1761 1762Kernel response contents: 1763 1764 ========================================== ====== ============================= 1765 ``ETHTOOL_A_PSE_HEADER`` nested reply header 1766 ``ETHTOOL_A_PODL_PSE_ADMIN_STATE`` u32 Operational state of the PoDL 1767 PSE functions 1768 ``ETHTOOL_A_PODL_PSE_PW_D_STATUS`` u32 power detection status of the 1769 PoDL PSE. 1770 ``ETHTOOL_A_C33_PSE_ADMIN_STATE`` u32 Operational state of the PoE 1771 PSE functions. 1772 ``ETHTOOL_A_C33_PSE_PW_D_STATUS`` u32 power detection status of the 1773 PoE PSE. 1774 ``ETHTOOL_A_C33_PSE_PW_CLASS`` u32 power class of the PoE PSE. 1775 ``ETHTOOL_A_C33_PSE_ACTUAL_PW`` u32 actual power drawn on the 1776 PoE PSE. 1777 ``ETHTOOL_A_C33_PSE_EXT_STATE`` u32 power extended state of the 1778 PoE PSE. 1779 ``ETHTOOL_A_C33_PSE_EXT_SUBSTATE`` u32 power extended substatus of 1780 the PoE PSE. 1781 ``ETHTOOL_A_C33_PSE_AVAIL_PW_LIMIT`` u32 currently configured power 1782 limit of the PoE PSE. 1783 ``ETHTOOL_A_C33_PSE_PW_LIMIT_RANGES`` nested Supported power limit 1784 configuration ranges. 1785 ========================================== ====== ============================= 1786 1787When set, the optional ``ETHTOOL_A_PODL_PSE_ADMIN_STATE`` attribute identifies 1788the operational state of the PoDL PSE functions. The operational state of the 1789PSE function can be changed using the ``ETHTOOL_A_PODL_PSE_ADMIN_CONTROL`` 1790action. This attribute corresponds to ``IEEE 802.3-2018`` 30.15.1.1.2 1791aPoDLPSEAdminState. Possible values are: 1792 1793.. kernel-doc:: include/uapi/linux/ethtool.h 1794 :identifiers: ethtool_podl_pse_admin_state 1795 1796The same goes for ``ETHTOOL_A_C33_PSE_ADMIN_STATE`` implementing 1797``IEEE 802.3-2022`` 30.9.1.1.2 aPSEAdminState. 1798 1799.. kernel-doc:: include/uapi/linux/ethtool.h 1800 :identifiers: ethtool_c33_pse_admin_state 1801 1802When set, the optional ``ETHTOOL_A_PODL_PSE_PW_D_STATUS`` attribute identifies 1803the power detection status of the PoDL PSE. The status depend on internal PSE 1804state machine and automatic PD classification support. This attribute 1805corresponds to ``IEEE 802.3-2018`` 30.15.1.1.3 aPoDLPSEPowerDetectionStatus. 1806Possible values are: 1807 1808.. kernel-doc:: include/uapi/linux/ethtool.h 1809 :identifiers: ethtool_podl_pse_pw_d_status 1810 1811The same goes for ``ETHTOOL_A_C33_PSE_ADMIN_PW_D_STATUS`` implementing 1812``IEEE 802.3-2022`` 30.9.1.1.5 aPSEPowerDetectionStatus. 1813 1814.. kernel-doc:: include/uapi/linux/ethtool.h 1815 :identifiers: ethtool_c33_pse_pw_d_status 1816 1817When set, the optional ``ETHTOOL_A_C33_PSE_PW_CLASS`` attribute identifies 1818the power class of the C33 PSE. It depends on the class negotiated between 1819the PSE and the PD. This attribute corresponds to ``IEEE 802.3-2022`` 182030.9.1.1.8 aPSEPowerClassification. 1821 1822When set, the optional ``ETHTOOL_A_C33_PSE_ACTUAL_PW`` attribute identifies 1823the actual power drawn by the C33 PSE. This attribute corresponds to 1824``IEEE 802.3-2022`` 30.9.1.1.23 aPSEActualPower. Actual power is reported 1825in mW. 1826 1827When set, the optional ``ETHTOOL_A_C33_PSE_EXT_STATE`` attribute identifies 1828the extended error state of the C33 PSE. Possible values are: 1829 1830.. kernel-doc:: include/uapi/linux/ethtool.h 1831 :identifiers: ethtool_c33_pse_ext_state 1832 1833When set, the optional ``ETHTOOL_A_C33_PSE_EXT_SUBSTATE`` attribute identifies 1834the extended error state of the C33 PSE. Possible values are: 1835Possible values are: 1836 1837.. kernel-doc:: include/uapi/linux/ethtool.h 1838 :identifiers: ethtool_c33_pse_ext_substate_class_num_events 1839 ethtool_c33_pse_ext_substate_error_condition 1840 ethtool_c33_pse_ext_substate_mr_pse_enable 1841 ethtool_c33_pse_ext_substate_option_detect_ted 1842 ethtool_c33_pse_ext_substate_option_vport_lim 1843 ethtool_c33_pse_ext_substate_ovld_detected 1844 ethtool_c33_pse_ext_substate_pd_dll_power_type 1845 ethtool_c33_pse_ext_substate_power_not_available 1846 ethtool_c33_pse_ext_substate_short_detected 1847 1848When set, the optional ``ETHTOOL_A_C33_PSE_AVAIL_PW_LIMIT`` attribute 1849identifies the C33 PSE power limit in mW. 1850 1851When set the optional ``ETHTOOL_A_C33_PSE_PW_LIMIT_RANGES`` nested attribute 1852identifies the C33 PSE power limit ranges through 1853``ETHTOOL_A_C33_PSE_PWR_VAL_LIMIT_RANGE_MIN`` and 1854``ETHTOOL_A_C33_PSE_PWR_VAL_LIMIT_RANGE_MAX``. 1855If the controller works with fixed classes, the min and max values will be 1856equal. 1857 1858PSE_SET 1859======= 1860 1861Sets PSE parameters. 1862 1863Request contents: 1864 1865 ====================================== ====== ============================= 1866 ``ETHTOOL_A_PSE_HEADER`` nested request header 1867 ``ETHTOOL_A_PODL_PSE_ADMIN_CONTROL`` u32 Control PoDL PSE Admin state 1868 ``ETHTOOL_A_C33_PSE_ADMIN_CONTROL`` u32 Control PSE Admin state 1869 ``ETHTOOL_A_C33_PSE_AVAIL_PWR_LIMIT`` u32 Control PoE PSE available 1870 power limit 1871 ====================================== ====== ============================= 1872 1873When set, the optional ``ETHTOOL_A_PODL_PSE_ADMIN_CONTROL`` attribute is used 1874to control PoDL PSE Admin functions. This option implements 1875``IEEE 802.3-2018`` 30.15.1.2.1 acPoDLPSEAdminControl. See 1876``ETHTOOL_A_PODL_PSE_ADMIN_STATE`` for supported values. 1877 1878The same goes for ``ETHTOOL_A_C33_PSE_ADMIN_CONTROL`` implementing 1879``IEEE 802.3-2022`` 30.9.1.2.1 acPSEAdminControl. 1880 1881When set, the optional ``ETHTOOL_A_C33_PSE_AVAIL_PWR_LIMIT`` attribute is 1882used to control the available power value limit for C33 PSE in milliwatts. 1883This attribute corresponds to the `pse_available_power` variable described in 1884``IEEE 802.3-2022`` 33.2.4.4 Variables and `pse_avail_pwr` in 145.2.5.4 1885Variables, which are described in power classes. 1886 1887It was decided to use milliwatts for this interface to unify it with other 1888power monitoring interfaces, which also use milliwatts, and to align with 1889various existing products that document power consumption in watts rather than 1890classes. If power limit configuration based on classes is needed, the 1891conversion can be done in user space, for example by ethtool. 1892 1893RSS_GET 1894======= 1895 1896Get indirection table, hash key and hash function info associated with a 1897RSS context of an interface similar to ``ETHTOOL_GRSSH`` ioctl request. 1898 1899Request contents: 1900 1901===================================== ====== ============================ 1902 ``ETHTOOL_A_RSS_HEADER`` nested request header 1903 ``ETHTOOL_A_RSS_CONTEXT`` u32 context number 1904 ``ETHTOOL_A_RSS_START_CONTEXT`` u32 start context number (dumps) 1905===================================== ====== ============================ 1906 1907``ETHTOOL_A_RSS_CONTEXT`` specifies which RSS context number to query, 1908if not set context 0 (the main context) is queried. Dumps can be filtered 1909by device (only listing contexts of a given netdev). Filtering single 1910context number is not supported but ``ETHTOOL_A_RSS_START_CONTEXT`` 1911can be used to start dumping context from the given number (primarily 1912used to ignore context 0s and only dump additional contexts). 1913 1914Kernel response contents: 1915 1916===================================== ====== ========================== 1917 ``ETHTOOL_A_RSS_HEADER`` nested reply header 1918 ``ETHTOOL_A_RSS_CONTEXT`` u32 context number 1919 ``ETHTOOL_A_RSS_HFUNC`` u32 RSS hash func 1920 ``ETHTOOL_A_RSS_INDIR`` binary Indir table bytes 1921 ``ETHTOOL_A_RSS_HKEY`` binary Hash key bytes 1922 ``ETHTOOL_A_RSS_INPUT_XFRM`` u32 RSS input data transformation 1923===================================== ====== ========================== 1924 1925ETHTOOL_A_RSS_HFUNC attribute is bitmap indicating the hash function 1926being used. Current supported options are toeplitz, xor or crc32. 1927ETHTOOL_A_RSS_INDIR attribute returns RSS indirection table where each byte 1928indicates queue number. 1929ETHTOOL_A_RSS_INPUT_XFRM attribute is a bitmap indicating the type of 1930transformation applied to the input protocol fields before given to the RSS 1931hfunc. Current supported option is symmetric-xor. 1932 1933PLCA_GET_CFG 1934============ 1935 1936Gets the IEEE 802.3cg-2019 Clause 148 Physical Layer Collision Avoidance 1937(PLCA) Reconciliation Sublayer (RS) attributes. 1938 1939Request contents: 1940 1941 ===================================== ====== ========================== 1942 ``ETHTOOL_A_PLCA_HEADER`` nested request header 1943 ===================================== ====== ========================== 1944 1945Kernel response contents: 1946 1947 ====================================== ====== ============================= 1948 ``ETHTOOL_A_PLCA_HEADER`` nested reply header 1949 ``ETHTOOL_A_PLCA_VERSION`` u16 Supported PLCA management 1950 interface standard/version 1951 ``ETHTOOL_A_PLCA_ENABLED`` u8 PLCA Admin State 1952 ``ETHTOOL_A_PLCA_NODE_ID`` u32 PLCA unique local node ID 1953 ``ETHTOOL_A_PLCA_NODE_CNT`` u32 Number of PLCA nodes on the 1954 network, including the 1955 coordinator 1956 ``ETHTOOL_A_PLCA_TO_TMR`` u32 Transmit Opportunity Timer 1957 value in bit-times (BT) 1958 ``ETHTOOL_A_PLCA_BURST_CNT`` u32 Number of additional packets 1959 the node is allowed to send 1960 within a single TO 1961 ``ETHTOOL_A_PLCA_BURST_TMR`` u32 Time to wait for the MAC to 1962 transmit a new frame before 1963 terminating the burst 1964 ====================================== ====== ============================= 1965 1966When set, the optional ``ETHTOOL_A_PLCA_VERSION`` attribute indicates which 1967standard and version the PLCA management interface complies to. When not set, 1968the interface is vendor-specific and (possibly) supplied by the driver. 1969The OPEN Alliance SIG specifies a standard register map for 10BASE-T1S PHYs 1970embedding the PLCA Reconciliation Sublayer. See "10BASE-T1S PLCA Management 1971Registers" at https://www.opensig.org/about/specifications/. 1972 1973When set, the optional ``ETHTOOL_A_PLCA_ENABLED`` attribute indicates the 1974administrative state of the PLCA RS. When not set, the node operates in "plain" 1975CSMA/CD mode. This option is corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.1 1976aPLCAAdminState / 30.16.1.2.1 acPLCAAdminControl. 1977 1978When set, the optional ``ETHTOOL_A_PLCA_NODE_ID`` attribute indicates the 1979configured local node ID of the PHY. This ID determines which transmit 1980opportunity (TO) is reserved for the node to transmit into. This option is 1981corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.4 aPLCALocalNodeID. The valid 1982range for this attribute is [0 .. 255] where 255 means "not configured". 1983 1984When set, the optional ``ETHTOOL_A_PLCA_NODE_CNT`` attribute indicates the 1985configured maximum number of PLCA nodes on the mixing-segment. This number 1986determines the total number of transmit opportunities generated during a 1987PLCA cycle. This attribute is relevant only for the PLCA coordinator, which is 1988the node with aPLCALocalNodeID set to 0. Follower nodes ignore this setting. 1989This option is corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.3 1990aPLCANodeCount. The valid range for this attribute is [1 .. 255]. 1991 1992When set, the optional ``ETHTOOL_A_PLCA_TO_TMR`` attribute indicates the 1993configured value of the transmit opportunity timer in bit-times. This value 1994must be set equal across all nodes sharing the medium for PLCA to work 1995correctly. This option is corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.5 1996aPLCATransmitOpportunityTimer. The valid range for this attribute is 1997[0 .. 255]. 1998 1999When set, the optional ``ETHTOOL_A_PLCA_BURST_CNT`` attribute indicates the 2000configured number of extra packets that the node is allowed to send during a 2001single transmit opportunity. By default, this attribute is 0, meaning that 2002the node can only send a single frame per TO. When greater than 0, the PLCA RS 2003keeps the TO after any transmission, waiting for the MAC to send a new frame 2004for up to aPLCABurstTimer BTs. This can only happen a number of times per PLCA 2005cycle up to the value of this parameter. After that, the burst is over and the 2006normal counting of TOs resumes. This option is corresponding to 2007``IEEE 802.3cg-2019`` 30.16.1.1.6 aPLCAMaxBurstCount. The valid range for this 2008attribute is [0 .. 255]. 2009 2010When set, the optional ``ETHTOOL_A_PLCA_BURST_TMR`` attribute indicates how 2011many bit-times the PLCA RS waits for the MAC to initiate a new transmission 2012when aPLCAMaxBurstCount is greater than 0. If the MAC fails to send a new 2013frame within this time, the burst ends and the counting of TOs resumes. 2014Otherwise, the new frame is sent as part of the current burst. This option 2015is corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.7 aPLCABurstTimer. The 2016valid range for this attribute is [0 .. 255]. Although, the value should be 2017set greater than the Inter-Frame-Gap (IFG) time of the MAC (plus some margin) 2018for PLCA burst mode to work as intended. 2019 2020PLCA_SET_CFG 2021============ 2022 2023Sets PLCA RS parameters. 2024 2025Request contents: 2026 2027 ====================================== ====== ============================= 2028 ``ETHTOOL_A_PLCA_HEADER`` nested request header 2029 ``ETHTOOL_A_PLCA_ENABLED`` u8 PLCA Admin State 2030 ``ETHTOOL_A_PLCA_NODE_ID`` u8 PLCA unique local node ID 2031 ``ETHTOOL_A_PLCA_NODE_CNT`` u8 Number of PLCA nodes on the 2032 network, including the 2033 coordinator 2034 ``ETHTOOL_A_PLCA_TO_TMR`` u8 Transmit Opportunity Timer 2035 value in bit-times (BT) 2036 ``ETHTOOL_A_PLCA_BURST_CNT`` u8 Number of additional packets 2037 the node is allowed to send 2038 within a single TO 2039 ``ETHTOOL_A_PLCA_BURST_TMR`` u8 Time to wait for the MAC to 2040 transmit a new frame before 2041 terminating the burst 2042 ====================================== ====== ============================= 2043 2044For a description of each attribute, see ``PLCA_GET_CFG``. 2045 2046PLCA_GET_STATUS 2047=============== 2048 2049Gets PLCA RS status information. 2050 2051Request contents: 2052 2053 ===================================== ====== ========================== 2054 ``ETHTOOL_A_PLCA_HEADER`` nested request header 2055 ===================================== ====== ========================== 2056 2057Kernel response contents: 2058 2059 ====================================== ====== ============================= 2060 ``ETHTOOL_A_PLCA_HEADER`` nested reply header 2061 ``ETHTOOL_A_PLCA_STATUS`` u8 PLCA RS operational status 2062 ====================================== ====== ============================= 2063 2064When set, the ``ETHTOOL_A_PLCA_STATUS`` attribute indicates whether the node is 2065detecting the presence of the BEACON on the network. This flag is 2066corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.2 aPLCAStatus. 2067 2068MM_GET 2069====== 2070 2071Retrieve 802.3 MAC Merge parameters. 2072 2073Request contents: 2074 2075 ==================================== ====== ========================== 2076 ``ETHTOOL_A_MM_HEADER`` nested request header 2077 ==================================== ====== ========================== 2078 2079Kernel response contents: 2080 2081 ================================= ====== =================================== 2082 ``ETHTOOL_A_MM_HEADER`` nested request header 2083 ``ETHTOOL_A_MM_PMAC_ENABLED`` bool set if RX of preemptible and SMD-V 2084 frames is enabled 2085 ``ETHTOOL_A_MM_TX_ENABLED`` bool set if TX of preemptible frames is 2086 administratively enabled (might be 2087 inactive if verification failed) 2088 ``ETHTOOL_A_MM_TX_ACTIVE`` bool set if TX of preemptible frames is 2089 operationally enabled 2090 ``ETHTOOL_A_MM_TX_MIN_FRAG_SIZE`` u32 minimum size of transmitted 2091 non-final fragments, in octets 2092 ``ETHTOOL_A_MM_RX_MIN_FRAG_SIZE`` u32 minimum size of received non-final 2093 fragments, in octets 2094 ``ETHTOOL_A_MM_VERIFY_ENABLED`` bool set if TX of SMD-V frames is 2095 administratively enabled 2096 ``ETHTOOL_A_MM_VERIFY_STATUS`` u8 state of the verification function 2097 ``ETHTOOL_A_MM_VERIFY_TIME`` u32 delay between verification attempts 2098 ``ETHTOOL_A_MM_MAX_VERIFY_TIME``` u32 maximum verification interval 2099 supported by device 2100 ``ETHTOOL_A_MM_STATS`` nested IEEE 802.3-2018 subclause 30.14.1 2101 oMACMergeEntity statistics counters 2102 ================================= ====== =================================== 2103 2104The attributes are populated by the device driver through the following 2105structure: 2106 2107.. kernel-doc:: include/linux/ethtool.h 2108 :identifiers: ethtool_mm_state 2109 2110The ``ETHTOOL_A_MM_VERIFY_STATUS`` will report one of the values from 2111 2112.. kernel-doc:: include/uapi/linux/ethtool.h 2113 :identifiers: ethtool_mm_verify_status 2114 2115If ``ETHTOOL_A_MM_VERIFY_ENABLED`` was passed as false in the ``MM_SET`` 2116command, ``ETHTOOL_A_MM_VERIFY_STATUS`` will report either 2117``ETHTOOL_MM_VERIFY_STATUS_INITIAL`` or ``ETHTOOL_MM_VERIFY_STATUS_DISABLED``, 2118otherwise it should report one of the other states. 2119 2120It is recommended that drivers start with the pMAC disabled, and enable it upon 2121user space request. It is also recommended that user space does not depend upon 2122the default values from ``ETHTOOL_MSG_MM_GET`` requests. 2123 2124``ETHTOOL_A_MM_STATS`` are reported if ``ETHTOOL_FLAG_STATS`` was set in 2125``ETHTOOL_A_HEADER_FLAGS``. The attribute will be empty if driver did not 2126report any statistics. Drivers fill in the statistics in the following 2127structure: 2128 2129.. kernel-doc:: include/linux/ethtool.h 2130 :identifiers: ethtool_mm_stats 2131 2132MM_SET 2133====== 2134 2135Modifies the configuration of the 802.3 MAC Merge layer. 2136 2137Request contents: 2138 2139 ================================= ====== ========================== 2140 ``ETHTOOL_A_MM_VERIFY_TIME`` u32 see MM_GET description 2141 ``ETHTOOL_A_MM_VERIFY_ENABLED`` bool see MM_GET description 2142 ``ETHTOOL_A_MM_TX_ENABLED`` bool see MM_GET description 2143 ``ETHTOOL_A_MM_PMAC_ENABLED`` bool see MM_GET description 2144 ``ETHTOOL_A_MM_TX_MIN_FRAG_SIZE`` u32 see MM_GET description 2145 ================================= ====== ========================== 2146 2147The attributes are propagated to the driver through the following structure: 2148 2149.. kernel-doc:: include/linux/ethtool.h 2150 :identifiers: ethtool_mm_cfg 2151 2152MODULE_FW_FLASH_ACT 2153=================== 2154 2155Flashes transceiver module firmware. 2156 2157Request contents: 2158 2159 ======================================= ====== =========================== 2160 ``ETHTOOL_A_MODULE_FW_FLASH_HEADER`` nested request header 2161 ``ETHTOOL_A_MODULE_FW_FLASH_FILE_NAME`` string firmware image file name 2162 ``ETHTOOL_A_MODULE_FW_FLASH_PASSWORD`` u32 transceiver module password 2163 ======================================= ====== =========================== 2164 2165The firmware update process consists of three logical steps: 2166 21671. Downloading a firmware image to the transceiver module and validating it. 21682. Running the firmware image. 21693. Committing the firmware image so that it is run upon reset. 2170 2171When flash command is given, those three steps are taken in that order. 2172 2173This message merely schedules the update process and returns immediately 2174without blocking. The process then runs asynchronously. 2175Since it can take several minutes to complete, during the update process 2176notifications are emitted from the kernel to user space updating it about 2177the status and progress. 2178 2179The ``ETHTOOL_A_MODULE_FW_FLASH_FILE_NAME`` attribute encodes the firmware 2180image file name. The firmware image is downloaded to the transceiver module, 2181validated, run and committed. 2182 2183The optional ``ETHTOOL_A_MODULE_FW_FLASH_PASSWORD`` attribute encodes a password 2184that might be required as part of the transceiver module firmware update 2185process. 2186 2187The firmware update process can take several minutes to complete. Therefore, 2188during the update process notifications are emitted from the kernel to user 2189space updating it about the status and progress. 2190 2191 2192 2193Notification contents: 2194 2195 +---------------------------------------------------+--------+----------------+ 2196 | ``ETHTOOL_A_MODULE_FW_FLASH_HEADER`` | nested | reply header | 2197 +---------------------------------------------------+--------+----------------+ 2198 | ``ETHTOOL_A_MODULE_FW_FLASH_STATUS`` | u32 | status | 2199 +---------------------------------------------------+--------+----------------+ 2200 | ``ETHTOOL_A_MODULE_FW_FLASH_STATUS_MSG`` | string | status message | 2201 +---------------------------------------------------+--------+----------------+ 2202 | ``ETHTOOL_A_MODULE_FW_FLASH_DONE`` | uint | progress | 2203 +---------------------------------------------------+--------+----------------+ 2204 | ``ETHTOOL_A_MODULE_FW_FLASH_TOTAL`` | uint | total | 2205 +---------------------------------------------------+--------+----------------+ 2206 2207The ``ETHTOOL_A_MODULE_FW_FLASH_STATUS`` attribute encodes the current status 2208of the firmware update process. Possible values are: 2209 2210.. kernel-doc:: include/uapi/linux/ethtool.h 2211 :identifiers: ethtool_module_fw_flash_status 2212 2213The ``ETHTOOL_A_MODULE_FW_FLASH_STATUS_MSG`` attribute encodes a status message 2214string. 2215 2216The ``ETHTOOL_A_MODULE_FW_FLASH_DONE`` and ``ETHTOOL_A_MODULE_FW_FLASH_TOTAL`` 2217attributes encode the completed and total amount of work, respectively. 2218 2219PHY_GET 2220======= 2221 2222Retrieve information about a given Ethernet PHY sitting on the link. The DO 2223operation returns all available information about dev->phydev. User can also 2224specify a PHY_INDEX, in which case the DO request returns information about that 2225specific PHY. 2226 2227As there can be more than one PHY, the DUMP operation can be used to list the PHYs 2228present on a given interface, by passing an interface index or name in 2229the dump request. 2230 2231For more information, refer to :ref:`phy_link_topology` 2232 2233Request contents: 2234 2235 ==================================== ====== ========================== 2236 ``ETHTOOL_A_PHY_HEADER`` nested request header 2237 ==================================== ====== ========================== 2238 2239Kernel response contents: 2240 2241 ===================================== ====== =============================== 2242 ``ETHTOOL_A_PHY_HEADER`` nested request header 2243 ``ETHTOOL_A_PHY_INDEX`` u32 the phy's unique index, that can 2244 be used for phy-specific 2245 requests 2246 ``ETHTOOL_A_PHY_DRVNAME`` string the phy driver name 2247 ``ETHTOOL_A_PHY_NAME`` string the phy device name 2248 ``ETHTOOL_A_PHY_UPSTREAM_TYPE`` u32 the type of device this phy is 2249 connected to 2250 ``ETHTOOL_A_PHY_UPSTREAM_INDEX`` u32 the PHY index of the upstream 2251 PHY 2252 ``ETHTOOL_A_PHY_UPSTREAM_SFP_NAME`` string if this PHY is connected to 2253 its parent PHY through an SFP 2254 bus, the name of this sfp bus 2255 ``ETHTOOL_A_PHY_DOWNSTREAM_SFP_NAME`` string if the phy controls an sfp bus, 2256 the name of the sfp bus 2257 ===================================== ====== =============================== 2258 2259When ``ETHTOOL_A_PHY_UPSTREAM_TYPE`` is PHY_UPSTREAM_PHY, the PHY's parent is 2260another PHY. 2261 2262TSCONFIG_GET 2263============ 2264 2265Retrieves the information about the current hardware timestamping source and 2266configuration. 2267 2268It is similar to the deprecated ``SIOCGHWTSTAMP`` ioctl request. 2269 2270Request contents: 2271 2272 ==================================== ====== ========================== 2273 ``ETHTOOL_A_TSCONFIG_HEADER`` nested request header 2274 ==================================== ====== ========================== 2275 2276Kernel response contents: 2277 2278 ======================================== ====== ============================ 2279 ``ETHTOOL_A_TSCONFIG_HEADER`` nested request header 2280 ``ETHTOOL_A_TSCONFIG_HWTSTAMP_PROVIDER`` nested PTP hw clock provider 2281 ``ETHTOOL_A_TSCONFIG_TX_TYPES`` bitset hwtstamp Tx type 2282 ``ETHTOOL_A_TSCONFIG_RX_FILTERS`` bitset hwtstamp Rx filter 2283 ``ETHTOOL_A_TSCONFIG_HWTSTAMP_FLAGS`` u32 hwtstamp flags 2284 ======================================== ====== ============================ 2285 2286When set the ``ETHTOOL_A_TSCONFIG_HWTSTAMP_PROVIDER`` attribute identifies the 2287source of the hw timestamping provider. It is composed by 2288``ETHTOOL_A_TS_HWTSTAMP_PROVIDER_INDEX`` attribute which describe the index of 2289the PTP device and ``ETHTOOL_A_TS_HWTSTAMP_PROVIDER_QUALIFIER`` which describe 2290the qualifier of the timestamp. 2291 2292When set the ``ETHTOOL_A_TSCONFIG_TX_TYPES``, ``ETHTOOL_A_TSCONFIG_RX_FILTERS`` 2293and the ``ETHTOOL_A_TSCONFIG_HWTSTAMP_FLAGS`` attributes identify the Tx 2294type, the Rx filter and the flags configured for the current hw timestamping 2295provider. The attributes are propagated to the driver through the following 2296structure: 2297 2298.. kernel-doc:: include/linux/net_tstamp.h 2299 :identifiers: kernel_hwtstamp_config 2300 2301TSCONFIG_SET 2302============ 2303 2304Set the information about the current hardware timestamping source and 2305configuration. 2306 2307It is similar to the deprecated ``SIOCSHWTSTAMP`` ioctl request. 2308 2309Request contents: 2310 2311 ======================================== ====== ============================ 2312 ``ETHTOOL_A_TSCONFIG_HEADER`` nested request header 2313 ``ETHTOOL_A_TSCONFIG_HWTSTAMP_PROVIDER`` nested PTP hw clock provider 2314 ``ETHTOOL_A_TSCONFIG_TX_TYPES`` bitset hwtstamp Tx type 2315 ``ETHTOOL_A_TSCONFIG_RX_FILTERS`` bitset hwtstamp Rx filter 2316 ``ETHTOOL_A_TSCONFIG_HWTSTAMP_FLAGS`` u32 hwtstamp flags 2317 ======================================== ====== ============================ 2318 2319Kernel response contents: 2320 2321 ======================================== ====== ============================ 2322 ``ETHTOOL_A_TSCONFIG_HEADER`` nested request header 2323 ``ETHTOOL_A_TSCONFIG_HWTSTAMP_PROVIDER`` nested PTP hw clock provider 2324 ``ETHTOOL_A_TSCONFIG_TX_TYPES`` bitset hwtstamp Tx type 2325 ``ETHTOOL_A_TSCONFIG_RX_FILTERS`` bitset hwtstamp Rx filter 2326 ``ETHTOOL_A_TSCONFIG_HWTSTAMP_FLAGS`` u32 hwtstamp flags 2327 ======================================== ====== ============================ 2328 2329For a description of each attribute, see ``TSCONFIG_GET``. 2330 2331Request translation 2332=================== 2333 2334The following table maps ioctl commands to netlink commands providing their 2335functionality. Entries with "n/a" in right column are commands which do not 2336have their netlink replacement yet. Entries which "n/a" in the left column 2337are netlink only. 2338 2339 =================================== ===================================== 2340 ioctl command netlink command 2341 =================================== ===================================== 2342 ``ETHTOOL_GSET`` ``ETHTOOL_MSG_LINKINFO_GET`` 2343 ``ETHTOOL_MSG_LINKMODES_GET`` 2344 ``ETHTOOL_SSET`` ``ETHTOOL_MSG_LINKINFO_SET`` 2345 ``ETHTOOL_MSG_LINKMODES_SET`` 2346 ``ETHTOOL_GDRVINFO`` n/a 2347 ``ETHTOOL_GREGS`` n/a 2348 ``ETHTOOL_GWOL`` ``ETHTOOL_MSG_WOL_GET`` 2349 ``ETHTOOL_SWOL`` ``ETHTOOL_MSG_WOL_SET`` 2350 ``ETHTOOL_GMSGLVL`` ``ETHTOOL_MSG_DEBUG_GET`` 2351 ``ETHTOOL_SMSGLVL`` ``ETHTOOL_MSG_DEBUG_SET`` 2352 ``ETHTOOL_NWAY_RST`` n/a 2353 ``ETHTOOL_GLINK`` ``ETHTOOL_MSG_LINKSTATE_GET`` 2354 ``ETHTOOL_GEEPROM`` n/a 2355 ``ETHTOOL_SEEPROM`` n/a 2356 ``ETHTOOL_GCOALESCE`` ``ETHTOOL_MSG_COALESCE_GET`` 2357 ``ETHTOOL_SCOALESCE`` ``ETHTOOL_MSG_COALESCE_SET`` 2358 ``ETHTOOL_GRINGPARAM`` ``ETHTOOL_MSG_RINGS_GET`` 2359 ``ETHTOOL_SRINGPARAM`` ``ETHTOOL_MSG_RINGS_SET`` 2360 ``ETHTOOL_GPAUSEPARAM`` ``ETHTOOL_MSG_PAUSE_GET`` 2361 ``ETHTOOL_SPAUSEPARAM`` ``ETHTOOL_MSG_PAUSE_SET`` 2362 ``ETHTOOL_GRXCSUM`` ``ETHTOOL_MSG_FEATURES_GET`` 2363 ``ETHTOOL_SRXCSUM`` ``ETHTOOL_MSG_FEATURES_SET`` 2364 ``ETHTOOL_GTXCSUM`` ``ETHTOOL_MSG_FEATURES_GET`` 2365 ``ETHTOOL_STXCSUM`` ``ETHTOOL_MSG_FEATURES_SET`` 2366 ``ETHTOOL_GSG`` ``ETHTOOL_MSG_FEATURES_GET`` 2367 ``ETHTOOL_SSG`` ``ETHTOOL_MSG_FEATURES_SET`` 2368 ``ETHTOOL_TEST`` n/a 2369 ``ETHTOOL_GSTRINGS`` ``ETHTOOL_MSG_STRSET_GET`` 2370 ``ETHTOOL_PHYS_ID`` n/a 2371 ``ETHTOOL_GSTATS`` n/a 2372 ``ETHTOOL_GTSO`` ``ETHTOOL_MSG_FEATURES_GET`` 2373 ``ETHTOOL_STSO`` ``ETHTOOL_MSG_FEATURES_SET`` 2374 ``ETHTOOL_GPERMADDR`` rtnetlink ``RTM_GETLINK`` 2375 ``ETHTOOL_GUFO`` ``ETHTOOL_MSG_FEATURES_GET`` 2376 ``ETHTOOL_SUFO`` ``ETHTOOL_MSG_FEATURES_SET`` 2377 ``ETHTOOL_GGSO`` ``ETHTOOL_MSG_FEATURES_GET`` 2378 ``ETHTOOL_SGSO`` ``ETHTOOL_MSG_FEATURES_SET`` 2379 ``ETHTOOL_GFLAGS`` ``ETHTOOL_MSG_FEATURES_GET`` 2380 ``ETHTOOL_SFLAGS`` ``ETHTOOL_MSG_FEATURES_SET`` 2381 ``ETHTOOL_GPFLAGS`` ``ETHTOOL_MSG_PRIVFLAGS_GET`` 2382 ``ETHTOOL_SPFLAGS`` ``ETHTOOL_MSG_PRIVFLAGS_SET`` 2383 ``ETHTOOL_GRXFH`` n/a 2384 ``ETHTOOL_SRXFH`` n/a 2385 ``ETHTOOL_GGRO`` ``ETHTOOL_MSG_FEATURES_GET`` 2386 ``ETHTOOL_SGRO`` ``ETHTOOL_MSG_FEATURES_SET`` 2387 ``ETHTOOL_GRXRINGS`` n/a 2388 ``ETHTOOL_GRXCLSRLCNT`` n/a 2389 ``ETHTOOL_GRXCLSRULE`` n/a 2390 ``ETHTOOL_GRXCLSRLALL`` n/a 2391 ``ETHTOOL_SRXCLSRLDEL`` n/a 2392 ``ETHTOOL_SRXCLSRLINS`` n/a 2393 ``ETHTOOL_FLASHDEV`` n/a 2394 ``ETHTOOL_RESET`` n/a 2395 ``ETHTOOL_SRXNTUPLE`` n/a 2396 ``ETHTOOL_GRXNTUPLE`` n/a 2397 ``ETHTOOL_GSSET_INFO`` ``ETHTOOL_MSG_STRSET_GET`` 2398 ``ETHTOOL_GRXFHINDIR`` n/a 2399 ``ETHTOOL_SRXFHINDIR`` n/a 2400 ``ETHTOOL_GFEATURES`` ``ETHTOOL_MSG_FEATURES_GET`` 2401 ``ETHTOOL_SFEATURES`` ``ETHTOOL_MSG_FEATURES_SET`` 2402 ``ETHTOOL_GCHANNELS`` ``ETHTOOL_MSG_CHANNELS_GET`` 2403 ``ETHTOOL_SCHANNELS`` ``ETHTOOL_MSG_CHANNELS_SET`` 2404 ``ETHTOOL_SET_DUMP`` n/a 2405 ``ETHTOOL_GET_DUMP_FLAG`` n/a 2406 ``ETHTOOL_GET_DUMP_DATA`` n/a 2407 ``ETHTOOL_GET_TS_INFO`` ``ETHTOOL_MSG_TSINFO_GET`` 2408 ``ETHTOOL_GMODULEINFO`` ``ETHTOOL_MSG_MODULE_EEPROM_GET`` 2409 ``ETHTOOL_GMODULEEEPROM`` ``ETHTOOL_MSG_MODULE_EEPROM_GET`` 2410 ``ETHTOOL_GEEE`` ``ETHTOOL_MSG_EEE_GET`` 2411 ``ETHTOOL_SEEE`` ``ETHTOOL_MSG_EEE_SET`` 2412 ``ETHTOOL_GRSSH`` ``ETHTOOL_MSG_RSS_GET`` 2413 ``ETHTOOL_SRSSH`` n/a 2414 ``ETHTOOL_GTUNABLE`` n/a 2415 ``ETHTOOL_STUNABLE`` n/a 2416 ``ETHTOOL_GPHYSTATS`` n/a 2417 ``ETHTOOL_PERQUEUE`` n/a 2418 ``ETHTOOL_GLINKSETTINGS`` ``ETHTOOL_MSG_LINKINFO_GET`` 2419 ``ETHTOOL_MSG_LINKMODES_GET`` 2420 ``ETHTOOL_SLINKSETTINGS`` ``ETHTOOL_MSG_LINKINFO_SET`` 2421 ``ETHTOOL_MSG_LINKMODES_SET`` 2422 ``ETHTOOL_PHY_GTUNABLE`` n/a 2423 ``ETHTOOL_PHY_STUNABLE`` n/a 2424 ``ETHTOOL_GFECPARAM`` ``ETHTOOL_MSG_FEC_GET`` 2425 ``ETHTOOL_SFECPARAM`` ``ETHTOOL_MSG_FEC_SET`` 2426 n/a ``ETHTOOL_MSG_CABLE_TEST_ACT`` 2427 n/a ``ETHTOOL_MSG_CABLE_TEST_TDR_ACT`` 2428 n/a ``ETHTOOL_MSG_TUNNEL_INFO_GET`` 2429 n/a ``ETHTOOL_MSG_PHC_VCLOCKS_GET`` 2430 n/a ``ETHTOOL_MSG_MODULE_GET`` 2431 n/a ``ETHTOOL_MSG_MODULE_SET`` 2432 n/a ``ETHTOOL_MSG_PLCA_GET_CFG`` 2433 n/a ``ETHTOOL_MSG_PLCA_SET_CFG`` 2434 n/a ``ETHTOOL_MSG_PLCA_GET_STATUS`` 2435 n/a ``ETHTOOL_MSG_MM_GET`` 2436 n/a ``ETHTOOL_MSG_MM_SET`` 2437 n/a ``ETHTOOL_MSG_MODULE_FW_FLASH_ACT`` 2438 n/a ``ETHTOOL_MSG_PHY_GET`` 2439 ``SIOCGHWTSTAMP`` ``ETHTOOL_MSG_TSCONFIG_GET`` 2440 ``SIOCSHWTSTAMP`` ``ETHTOOL_MSG_TSCONFIG_SET`` 2441 =================================== ===================================== 2442