include/linux/ethtool.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * ethtool.h: Defines for Linux ethtool.
   4  *
   5  * Copyright (C) 1998 David S. Miller (davem@redhat.com)
   6  * Copyright 2001 Jeff Garzik <jgarzik@pobox.com>
   7  * Portions Copyright 2001 Sun Microsystems (thockin@sun.com)
   8  * Portions Copyright 2002 Intel (eli.kupermann@intel.com,
   9  *                                christopher.leech@intel.com,
  10  *                                scott.feldman@intel.com)
  11  * Portions Copyright (C) Sun Microsystems 2008
  12  */
  13 #ifndef _LINUX_ETHTOOL_H
  14 #define _LINUX_ETHTOOL_H
  15
  16 #include <linux/bitmap.h>
  17 #include <linux/compat.h>
  18 #include <linux/netlink.h>
  19 #include <uapi/linux/ethtool.h>
  20
  21 struct compat_ethtool_rx_flow_spec {
  22         u32             flow_type;
  23         union ethtool_flow_union h_u;
  24         struct ethtool_flow_ext h_ext;
  25         union ethtool_flow_union m_u;
  26         struct ethtool_flow_ext m_ext;
  27         compat_u64      ring_cookie;
  28         u32             location;
  29 };
  30
  31 struct compat_ethtool_rxnfc {
  32         u32                             cmd;
  33         u32                             flow_type;
  34         compat_u64                      data;
  35         struct compat_ethtool_rx_flow_spec fs;
  36         u32                             rule_cnt;
  37         u32                             rule_locs[];
  38 };
  39
  40 #include <linux/rculist.h>
  41
  42 /**
  43  * enum ethtool_phys_id_state - indicator state for physical identification
  44  * @ETHTOOL_ID_INACTIVE: Physical ID indicator should be deactivated
  45  * @ETHTOOL_ID_ACTIVE: Physical ID indicator should be activated
  46  * @ETHTOOL_ID_ON: LED should be turned on (used iff %ETHTOOL_ID_ACTIVE
  47  *      is not supported)
  48  * @ETHTOOL_ID_OFF: LED should be turned off (used iff %ETHTOOL_ID_ACTIVE
  49  *      is not supported)
  50  */
  51 enum ethtool_phys_id_state {
  52         ETHTOOL_ID_INACTIVE,
  53         ETHTOOL_ID_ACTIVE,
  54         ETHTOOL_ID_ON,
  55         ETHTOOL_ID_OFF
  56 };
  57
  58 enum {
  59         ETH_RSS_HASH_TOP_BIT, /* Configurable RSS hash function - Toeplitz */
  60         ETH_RSS_HASH_XOR_BIT, /* Configurable RSS hash function - Xor */
  61         ETH_RSS_HASH_CRC32_BIT, /* Configurable RSS hash function - Crc32 */
  62
  63         /*
  64          * Add your fresh new hash function bits above and remember to update
  65          * rss_hash_func_strings[] in ethtool.c
  66          */
  67         ETH_RSS_HASH_FUNCS_COUNT
  68 };
  69
  70 #define __ETH_RSS_HASH_BIT(bit) ((u32)1 << (bit))
  71 #define __ETH_RSS_HASH(name)    __ETH_RSS_HASH_BIT(ETH_RSS_HASH_##name##_BIT)
  72
  73 #define ETH_RSS_HASH_TOP        __ETH_RSS_HASH(TOP)
  74 #define ETH_RSS_HASH_XOR        __ETH_RSS_HASH(XOR)
  75 #define ETH_RSS_HASH_CRC32      __ETH_RSS_HASH(CRC32)
  76
  77 #define ETH_RSS_HASH_UNKNOWN    0
  78 #define ETH_RSS_HASH_NO_CHANGE  0
  79
  80 struct net_device;
  81 struct netlink_ext_ack;
  82
  83 /* Some generic methods drivers may use in their ethtool_ops */
  84 u32 ethtool_op_get_link(struct net_device *dev);
  85 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *eti);
  86
  87
  88 /* Link extended state and substate. */
  89 struct ethtool_link_ext_state_info {
  90         enum ethtool_link_ext_state link_ext_state;
  91         union {
  92                 enum ethtool_link_ext_substate_autoneg autoneg;
  93                 enum ethtool_link_ext_substate_link_training link_training;
  94                 enum ethtool_link_ext_substate_link_logical_mismatch link_logical_mismatch;
  95                 enum ethtool_link_ext_substate_bad_signal_integrity bad_signal_integrity;
  96                 enum ethtool_link_ext_substate_cable_issue cable_issue;
  97                 u8 __link_ext_substate;
  98         };
  99 };
 100
 101 /**
 102  * ethtool_rxfh_indir_default - get default value for RX flow hash indirection
 103  * @index: Index in RX flow hash indirection table
 104  * @n_rx_rings: Number of RX rings to use
 105  *
 106  * This function provides the default policy for RX flow hash indirection.
 107  */
 108 static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
 109 {
 110         return index % n_rx_rings;
 111 }
 112
 113 /* declare a link mode bitmap */
 114 #define __ETHTOOL_DECLARE_LINK_MODE_MASK(name)          \
 115         DECLARE_BITMAP(name, __ETHTOOL_LINK_MODE_MASK_NBITS)
 116
 117 /* drivers must ignore base.cmd and base.link_mode_masks_nwords
 118  * fields, but they are allowed to overwrite them (will be ignored).
 119  */
 120 struct ethtool_link_ksettings {
 121         struct ethtool_link_settings base;
 122         struct {
 123                 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
 124                 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
 125                 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
 126         } link_modes;
 127         u32     lanes;
 128 };
 129
 130 /**
 131  * ethtool_link_ksettings_zero_link_mode - clear link_ksettings link mode mask
 132  *   @ptr : pointer to struct ethtool_link_ksettings
 133  *   @name : one of supported/advertising/lp_advertising
 134  */
 135 #define ethtool_link_ksettings_zero_link_mode(ptr, name)                \
 136         bitmap_zero((ptr)->link_modes.name, __ETHTOOL_LINK_MODE_MASK_NBITS)
 137
 138 /**
 139  * ethtool_link_ksettings_add_link_mode - set bit in link_ksettings
 140  * link mode mask
 141  *   @ptr : pointer to struct ethtool_link_ksettings
 142  *   @name : one of supported/advertising/lp_advertising
 143  *   @mode : one of the ETHTOOL_LINK_MODE_*_BIT
 144  * (not atomic, no bound checking)
 145  */
 146 #define ethtool_link_ksettings_add_link_mode(ptr, name, mode)           \
 147         __set_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
 148
 149 /**
 150  * ethtool_link_ksettings_del_link_mode - clear bit in link_ksettings
 151  * link mode mask
 152  *   @ptr : pointer to struct ethtool_link_ksettings
 153  *   @name : one of supported/advertising/lp_advertising
 154  *   @mode : one of the ETHTOOL_LINK_MODE_*_BIT
 155  * (not atomic, no bound checking)
 156  */
 157 #define ethtool_link_ksettings_del_link_mode(ptr, name, mode)           \
 158         __clear_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
 159
 160 /**
 161  * ethtool_link_ksettings_test_link_mode - test bit in ksettings link mode mask
 162  *   @ptr : pointer to struct ethtool_link_ksettings
 163  *   @name : one of supported/advertising/lp_advertising
 164  *   @mode : one of the ETHTOOL_LINK_MODE_*_BIT
 165  * (not atomic, no bound checking)
 166  *
 167  * Returns true/false.
 168  */
 169 #define ethtool_link_ksettings_test_link_mode(ptr, name, mode)          \
 170         test_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
 171
 172 extern int
 173 __ethtool_get_link_ksettings(struct net_device *dev,
 174                              struct ethtool_link_ksettings *link_ksettings);
 175
 176 struct kernel_ethtool_coalesce {
 177         u8 use_cqe_mode_tx;
 178         u8 use_cqe_mode_rx;
 179 };
 180
 181 /**
 182  * ethtool_intersect_link_masks - Given two link masks, AND them together
 183  * @dst: first mask and where result is stored
 184  * @src: second mask to intersect with
 185  *
 186  * Given two link mode masks, AND them together and save the result in dst.
 187  */
 188 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
 189                                   struct ethtool_link_ksettings *src);
 190
 191 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
 192                                              u32 legacy_u32);
 193
 194 /* return false if src had higher bits set. lower bits always updated. */
 195 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
 196                                      const unsigned long *src);
 197
 198 #define ETHTOOL_COALESCE_RX_USECS               BIT(0)
 199 #define ETHTOOL_COALESCE_RX_MAX_FRAMES          BIT(1)
 200 #define ETHTOOL_COALESCE_RX_USECS_IRQ           BIT(2)
 201 #define ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ      BIT(3)
 202 #define ETHTOOL_COALESCE_TX_USECS               BIT(4)
 203 #define ETHTOOL_COALESCE_TX_MAX_FRAMES          BIT(5)
 204 #define ETHTOOL_COALESCE_TX_USECS_IRQ           BIT(6)
 205 #define ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ      BIT(7)
 206 #define ETHTOOL_COALESCE_STATS_BLOCK_USECS      BIT(8)
 207 #define ETHTOOL_COALESCE_USE_ADAPTIVE_RX        BIT(9)
 208 #define ETHTOOL_COALESCE_USE_ADAPTIVE_TX        BIT(10)
 209 #define ETHTOOL_COALESCE_PKT_RATE_LOW           BIT(11)
 210 #define ETHTOOL_COALESCE_RX_USECS_LOW           BIT(12)
 211 #define ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW      BIT(13)
 212 #define ETHTOOL_COALESCE_TX_USECS_LOW           BIT(14)
 213 #define ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW      BIT(15)
 214 #define ETHTOOL_COALESCE_PKT_RATE_HIGH          BIT(16)
 215 #define ETHTOOL_COALESCE_RX_USECS_HIGH          BIT(17)
 216 #define ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH     BIT(18)
 217 #define ETHTOOL_COALESCE_TX_USECS_HIGH          BIT(19)
 218 #define ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH     BIT(20)
 219 #define ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL   BIT(21)
 220 #define ETHTOOL_COALESCE_USE_CQE_RX             BIT(22)
 221 #define ETHTOOL_COALESCE_USE_CQE_TX             BIT(23)
 222 #define ETHTOOL_COALESCE_ALL_PARAMS             GENMASK(23, 0)
 223
 224 #define ETHTOOL_COALESCE_USECS                                          \
 225         (ETHTOOL_COALESCE_RX_USECS | ETHTOOL_COALESCE_TX_USECS)
 226 #define ETHTOOL_COALESCE_MAX_FRAMES                                     \
 227         (ETHTOOL_COALESCE_RX_MAX_FRAMES | ETHTOOL_COALESCE_TX_MAX_FRAMES)
 228 #define ETHTOOL_COALESCE_USECS_IRQ                                      \
 229         (ETHTOOL_COALESCE_RX_USECS_IRQ | ETHTOOL_COALESCE_TX_USECS_IRQ)
 230 #define ETHTOOL_COALESCE_MAX_FRAMES_IRQ         \
 231         (ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ |   \
 232          ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ)
 233 #define ETHTOOL_COALESCE_USE_ADAPTIVE                                   \
 234         (ETHTOOL_COALESCE_USE_ADAPTIVE_RX | ETHTOOL_COALESCE_USE_ADAPTIVE_TX)
 235 #define ETHTOOL_COALESCE_USECS_LOW_HIGH                                 \
 236         (ETHTOOL_COALESCE_RX_USECS_LOW | ETHTOOL_COALESCE_TX_USECS_LOW | \
 237          ETHTOOL_COALESCE_RX_USECS_HIGH | ETHTOOL_COALESCE_TX_USECS_HIGH)
 238 #define ETHTOOL_COALESCE_MAX_FRAMES_LOW_HIGH    \
 239         (ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW |   \
 240          ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW |   \
 241          ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH |  \
 242          ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH)
 243 #define ETHTOOL_COALESCE_PKT_RATE_RX_USECS                              \
 244         (ETHTOOL_COALESCE_USE_ADAPTIVE_RX |                             \
 245          ETHTOOL_COALESCE_RX_USECS_LOW | ETHTOOL_COALESCE_RX_USECS_HIGH | \
 246          ETHTOOL_COALESCE_PKT_RATE_LOW | ETHTOOL_COALESCE_PKT_RATE_HIGH | \
 247          ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL)
 248 #define ETHTOOL_COALESCE_USE_CQE                                        \
 249         (ETHTOOL_COALESCE_USE_CQE_RX | ETHTOOL_COALESCE_USE_CQE_TX)
 250
 251 #define ETHTOOL_STAT_NOT_SET    (~0ULL)
 252
 253 static inline void ethtool_stats_init(u64 *stats, unsigned int n)
 254 {
 255         while (n--)
 256                 stats[n] = ETHTOOL_STAT_NOT_SET;
 257 }
 258
 259 /* Basic IEEE 802.3 MAC statistics (30.3.1.1.*), not otherwise exposed
 260  * via a more targeted API.
 261  */
 262 struct ethtool_eth_mac_stats {
 263         u64 FramesTransmittedOK;
 264         u64 SingleCollisionFrames;
 265         u64 MultipleCollisionFrames;
 266         u64 FramesReceivedOK;
 267         u64 FrameCheckSequenceErrors;
 268         u64 AlignmentErrors;
 269         u64 OctetsTransmittedOK;
 270         u64 FramesWithDeferredXmissions;
 271         u64 LateCollisions;
 272         u64 FramesAbortedDueToXSColls;
 273         u64 FramesLostDueToIntMACXmitError;
 274         u64 CarrierSenseErrors;
 275         u64 OctetsReceivedOK;
 276         u64 FramesLostDueToIntMACRcvError;
 277         u64 MulticastFramesXmittedOK;
 278         u64 BroadcastFramesXmittedOK;
 279         u64 FramesWithExcessiveDeferral;
 280         u64 MulticastFramesReceivedOK;
 281         u64 BroadcastFramesReceivedOK;
 282         u64 InRangeLengthErrors;
 283         u64 OutOfRangeLengthField;
 284         u64 FrameTooLongErrors;
 285 };
 286
 287 /* Basic IEEE 802.3 PHY statistics (30.3.2.1.*), not otherwise exposed
 288  * via a more targeted API.
 289  */
 290 struct ethtool_eth_phy_stats {
 291         u64 SymbolErrorDuringCarrier;
 292 };
 293
 294 /* Basic IEEE 802.3 MAC Ctrl statistics (30.3.3.*), not otherwise exposed
 295  * via a more targeted API.
 296  */
 297 struct ethtool_eth_ctrl_stats {
 298         u64 MACControlFramesTransmitted;
 299         u64 MACControlFramesReceived;
 300         u64 UnsupportedOpcodesReceived;
 301 };
 302
 303 /**
 304  * struct ethtool_pause_stats - statistics for IEEE 802.3x pause frames
 305  * @tx_pause_frames: transmitted pause frame count. Reported to user space
 306  *      as %ETHTOOL_A_PAUSE_STAT_TX_FRAMES.
 307  *
 308  *      Equivalent to `30.3.4.2 aPAUSEMACCtrlFramesTransmitted`
 309  *      from the standard.
 310  *
 311  * @rx_pause_frames: received pause frame count. Reported to user space
 312  *      as %ETHTOOL_A_PAUSE_STAT_RX_FRAMES. Equivalent to:
 313  *
 314  *      Equivalent to `30.3.4.3 aPAUSEMACCtrlFramesReceived`
 315  *      from the standard.
 316  */
 317 struct ethtool_pause_stats {
 318         u64 tx_pause_frames;
 319         u64 rx_pause_frames;
 320 };
 321
 322 #define ETHTOOL_MAX_LANES       8
 323
 324 /**
 325  * struct ethtool_fec_stats - statistics for IEEE 802.3 FEC
 326  * @corrected_blocks: number of received blocks corrected by FEC
 327  *      Reported to user space as %ETHTOOL_A_FEC_STAT_CORRECTED.
 328  *
 329  *      Equivalent to `30.5.1.1.17 aFECCorrectedBlocks` from the standard.
 330  *
 331  * @uncorrectable_blocks: number of received blocks FEC was not able to correct
 332  *      Reported to user space as %ETHTOOL_A_FEC_STAT_UNCORR.
 333  *
 334  *      Equivalent to `30.5.1.1.18 aFECUncorrectableBlocks` from the standard.
 335  *
 336  * @corrected_bits: number of bits corrected by FEC
 337  *      Similar to @corrected_blocks but counts individual bit changes,
 338  *      not entire FEC data blocks. This is a non-standard statistic.
 339  *      Reported to user space as %ETHTOOL_A_FEC_STAT_CORR_BITS.
 340  *
 341  * @lane: per-lane/PCS-instance counts as defined by the standard
 342  * @total: error counts for the entire port, for drivers incapable of reporting
 343  *      per-lane stats
 344  *
 345  * Drivers should fill in either only total or per-lane statistics, core
 346  * will take care of adding lane values up to produce the total.
 347  */
 348 struct ethtool_fec_stats {
 349         struct ethtool_fec_stat {
 350                 u64 total;
 351                 u64 lanes[ETHTOOL_MAX_LANES];
 352         } corrected_blocks, uncorrectable_blocks, corrected_bits;
 353 };
 354
 355 /**
 356  * struct ethtool_rmon_hist_range - byte range for histogram statistics
 357  * @low: low bound of the bucket (inclusive)
 358  * @high: high bound of the bucket (inclusive)
 359  */
 360 struct ethtool_rmon_hist_range {
 361         u16 low;
 362         u16 high;
 363 };
 364
 365 #define ETHTOOL_RMON_HIST_MAX   10
 366
 367 /**
 368  * struct ethtool_rmon_stats - selected RMON (RFC 2819) statistics
 369  * @undersize_pkts: Equivalent to `etherStatsUndersizePkts` from the RFC.
 370  * @oversize_pkts: Equivalent to `etherStatsOversizePkts` from the RFC.
 371  * @fragments: Equivalent to `etherStatsFragments` from the RFC.
 372  * @jabbers: Equivalent to `etherStatsJabbers` from the RFC.
 373  * @hist: Packet counter for packet length buckets (e.g.
 374  *      `etherStatsPkts128to255Octets` from the RFC).
 375  * @hist_tx: Tx counters in similar form to @hist, not defined in the RFC.
 376  *
 377  * Selection of RMON (RFC 2819) statistics which are not exposed via different
 378  * APIs, primarily the packet-length-based counters.
 379  * Unfortunately different designs choose different buckets beyond
 380  * the 1024B mark (jumbo frame teritory), so the definition of the bucket
 381  * ranges is left to the driver.
 382  */
 383 struct ethtool_rmon_stats {
 384         u64 undersize_pkts;
 385         u64 oversize_pkts;
 386         u64 fragments;
 387         u64 jabbers;
 388
 389         u64 hist[ETHTOOL_RMON_HIST_MAX];
 390         u64 hist_tx[ETHTOOL_RMON_HIST_MAX];
 391 };
 392
 393 #define ETH_MODULE_EEPROM_PAGE_LEN      128
 394 #define ETH_MODULE_MAX_I2C_ADDRESS      0x7f
 395
 396 /**
 397  * struct ethtool_module_eeprom - EEPROM dump from specified page
 398  * @offset: Offset within the specified EEPROM page to begin read, in bytes.
 399  * @length: Number of bytes to read.
 400  * @page: Page number to read from.
 401  * @bank: Page bank number to read from, if applicable by EEPROM spec.
 402  * @i2c_address: I2C address of a page. Value less than 0x7f expected. Most
 403  *      EEPROMs use 0x50 or 0x51.
 404  * @data: Pointer to buffer with EEPROM data of @length size.
 405  *
 406  * This can be used to manage pages during EEPROM dump in ethtool and pass
 407  * required information to the driver.
 408  */
 409 struct ethtool_module_eeprom {
 410         u32     offset;
 411         u32     length;
 412         u8      page;
 413         u8      bank;
 414         u8      i2c_address;
 415         u8      *data;
 416 };
 417
 418 /**
 419  * struct ethtool_ops - optional netdev operations
 420  * @cap_link_lanes_supported: indicates if the driver supports lanes
 421  *      parameter.
 422  * @supported_coalesce_params: supported types of interrupt coalescing.
 423  * @get_drvinfo: Report driver/device information.  Should only set the
 424  *      @driver, @version, @fw_version and @bus_info fields.  If not
 425  *      implemented, the @driver and @bus_info fields will be filled in
 426  *      according to the netdev's parent device.
 427  * @get_regs_len: Get buffer length required for @get_regs
 428  * @get_regs: Get device registers
 429  * @get_wol: Report whether Wake-on-Lan is enabled
 430  * @set_wol: Turn Wake-on-Lan on or off.  Returns a negative error code
 431  *      or zero.
 432  * @get_msglevel: Report driver message level.  This should be the value
 433  *      of the @msg_enable field used by netif logging functions.
 434  * @set_msglevel: Set driver message level
 435  * @nway_reset: Restart autonegotiation.  Returns a negative error code
 436  *      or zero.
 437  * @get_link: Report whether physical link is up.  Will only be called if
 438  *      the netdev is up.  Should usually be set to ethtool_op_get_link(),
 439  *      which uses netif_carrier_ok().
 440  * @get_link_ext_state: Report link extended state. Should set link_ext_state and
 441  *      link_ext_substate (link_ext_substate of 0 means link_ext_substate is unknown,
 442  *      do not attach ext_substate attribute to netlink message). If link_ext_state
 443  *      and link_ext_substate are unknown, return -ENODATA. If not implemented,
 444  *      link_ext_state and link_ext_substate will not be sent to userspace.
 445  * @get_eeprom_len: Read range of EEPROM addresses for validation of
 446  *      @get_eeprom and @set_eeprom requests.
 447  *      Returns 0 if device does not support EEPROM access.
 448  * @get_eeprom: Read data from the device EEPROM.
 449  *      Should fill in the magic field.  Don't need to check len for zero
 450  *      or wraparound.  Fill in the data argument with the eeprom values
 451  *      from offset to offset + len.  Update len to the amount read.
 452  *      Returns an error or zero.
 453  * @set_eeprom: Write data to the device EEPROM.
 454  *      Should validate the magic field.  Don't need to check len for zero
 455  *      or wraparound.  Update len to the amount written.  Returns an error
 456  *      or zero.
 457  * @get_coalesce: Get interrupt coalescing parameters.  Returns a negative
 458  *      error code or zero.
 459  * @set_coalesce: Set interrupt coalescing parameters.  Supported coalescing
 460  *      types should be set in @supported_coalesce_params.
 461  *      Returns a negative error code or zero.
 462  * @get_ringparam: Report ring sizes
 463  * @set_ringparam: Set ring sizes.  Returns a negative error code or zero.
 464  * @get_pause_stats: Report pause frame statistics. Drivers must not zero
 465  *      statistics which they don't report. The stats structure is initialized
 466  *      to ETHTOOL_STAT_NOT_SET indicating driver does not report statistics.
 467  * @get_pauseparam: Report pause parameters
 468  * @set_pauseparam: Set pause parameters.  Returns a negative error code
 469  *      or zero.
 470  * @self_test: Run specified self-tests
 471  * @get_strings: Return a set of strings that describe the requested objects
 472  * @set_phys_id: Identify the physical devices, e.g. by flashing an LED
 473  *      attached to it.  The implementation may update the indicator
 474  *      asynchronously or synchronously, but in either case it must return
 475  *      quickly.  It is initially called with the argument %ETHTOOL_ID_ACTIVE,
 476  *      and must either activate asynchronous updates and return zero, return
 477  *      a negative error or return a positive frequency for synchronous
 478  *      indication (e.g. 1 for one on/off cycle per second).  If it returns
 479  *      a frequency then it will be called again at intervals with the
 480  *      argument %ETHTOOL_ID_ON or %ETHTOOL_ID_OFF and should set the state of
 481  *      the indicator accordingly.  Finally, it is called with the argument
 482  *      %ETHTOOL_ID_INACTIVE and must deactivate the indicator.  Returns a
 483  *      negative error code or zero.
 484  * @get_ethtool_stats: Return extended statistics about the device.
 485  *      This is only useful if the device maintains statistics not
 486  *      included in &struct rtnl_link_stats64.
 487  * @begin: Function to be called before any other operation.  Returns a
 488  *      negative error code or zero.
 489  * @complete: Function to be called after any other operation except
 490  *      @begin.  Will be called even if the other operation failed.
 491  * @get_priv_flags: Report driver-specific feature flags.
 492  * @set_priv_flags: Set driver-specific feature flags.  Returns a negative
 493  *      error code or zero.
 494  * @get_sset_count: Get number of strings that @get_strings will write.
 495  * @get_rxnfc: Get RX flow classification rules.  Returns a negative
 496  *      error code or zero.
 497  * @set_rxnfc: Set RX flow classification rules.  Returns a negative
 498  *      error code or zero.
 499  * @flash_device: Write a firmware image to device's flash memory.
 500  *      Returns a negative error code or zero.
 501  * @reset: Reset (part of) the device, as specified by a bitmask of
 502  *      flags from &enum ethtool_reset_flags.  Returns a negative
 503  *      error code or zero.
 504  * @get_rxfh_key_size: Get the size of the RX flow hash key.
 505  *      Returns zero if not supported for this specific device.
 506  * @get_rxfh_indir_size: Get the size of the RX flow hash indirection table.
 507  *      Returns zero if not supported for this specific device.
 508  * @get_rxfh: Get the contents of the RX flow hash indirection table, hash key
 509  *      and/or hash function.
 510  *      Returns a negative error code or zero.
 511  * @set_rxfh: Set the contents of the RX flow hash indirection table, hash
 512  *      key, and/or hash function.  Arguments which are set to %NULL or zero
 513  *      will remain unchanged.
 514  *      Returns a negative error code or zero. An error code must be returned
 515  *      if at least one unsupported change was requested.
 516  * @get_rxfh_context: Get the contents of the RX flow hash indirection table,
 517  *      hash key, and/or hash function assiciated to the given rss context.
 518  *      Returns a negative error code or zero.
 519  * @set_rxfh_context: Create, remove and configure RSS contexts. Allows setting
 520  *      the contents of the RX flow hash indirection table, hash key, and/or
 521  *      hash function associated to the given context. Arguments which are set
 522  *      to %NULL or zero will remain unchanged.
 523  *      Returns a negative error code or zero. An error code must be returned
 524  *      if at least one unsupported change was requested.
 525  * @get_channels: Get number of channels.
 526  * @set_channels: Set number of channels.  Returns a negative error code or
 527  *      zero.
 528  * @get_dump_flag: Get dump flag indicating current dump length, version,
 529  *                 and flag of the device.
 530  * @get_dump_data: Get dump data.
 531  * @set_dump: Set dump specific flags to the device.
 532  * @get_ts_info: Get the time stamping and PTP hardware clock capabilities.
 533  *      Drivers supporting transmit time stamps in software should set this to
 534  *      ethtool_op_get_ts_info().
 535  * @get_module_info: Get the size and type of the eeprom contained within
 536  *      a plug-in module.
 537  * @get_module_eeprom: Get the eeprom information from the plug-in module
 538  * @get_eee: Get Energy-Efficient (EEE) supported and status.
 539  * @set_eee: Set EEE status (enable/disable) as well as LPI timers.
 540  * @get_tunable: Read the value of a driver / device tunable.
 541  * @set_tunable: Set the value of a driver / device tunable.
 542  * @get_per_queue_coalesce: Get interrupt coalescing parameters per queue.
 543  *      It must check that the given queue number is valid. If neither a RX nor
 544  *      a TX queue has this number, return -EINVAL. If only a RX queue or a TX
 545  *      queue has this number, set the inapplicable fields to ~0 and return 0.
 546  *      Returns a negative error code or zero.
 547  * @set_per_queue_coalesce: Set interrupt coalescing parameters per queue.
 548  *      It must check that the given queue number is valid. If neither a RX nor
 549  *      a TX queue has this number, return -EINVAL. If only a RX queue or a TX
 550  *      queue has this number, ignore the inapplicable fields. Supported
 551  *      coalescing types should be set in @supported_coalesce_params.
 552  *      Returns a negative error code or zero.
 553  * @get_link_ksettings: Get various device settings including Ethernet link
 554  *      settings. The %cmd and %link_mode_masks_nwords fields should be
 555  *      ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter),
 556  *      any change to them will be overwritten by kernel. Returns a negative
 557  *      error code or zero.
 558  * @set_link_ksettings: Set various device settings including Ethernet link
 559  *      settings. The %cmd and %link_mode_masks_nwords fields should be
 560  *      ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter),
 561  *      any change to them will be overwritten by kernel. Returns a negative
 562  *      error code or zero.
 563  * @get_fec_stats: Report FEC statistics.
 564  *      Core will sum up per-lane stats to get the total.
 565  *      Drivers must not zero statistics which they don't report. The stats
 566  *      structure is initialized to ETHTOOL_STAT_NOT_SET indicating driver does
 567  *      not report statistics.
 568  * @get_fecparam: Get the network device Forward Error Correction parameters.
 569  * @set_fecparam: Set the network device Forward Error Correction parameters.
 570  * @get_ethtool_phy_stats: Return extended statistics about the PHY device.
 571  *      This is only useful if the device maintains PHY statistics and
 572  *      cannot use the standard PHY library helpers.
 573  * @get_phy_tunable: Read the value of a PHY tunable.
 574  * @set_phy_tunable: Set the value of a PHY tunable.
 575  * @get_module_eeprom_by_page: Get a region of plug-in module EEPROM data from
 576  *      specified page. Returns a negative error code or the amount of bytes
 577  *      read.
 578  * @get_eth_phy_stats: Query some of the IEEE 802.3 PHY statistics.
 579  * @get_eth_mac_stats: Query some of the IEEE 802.3 MAC statistics.
 580  * @get_eth_ctrl_stats: Query some of the IEEE 802.3 MAC Ctrl statistics.
 581  * @get_rmon_stats: Query some of the RMON (RFC 2819) statistics.
 582  *      Set %ranges to a pointer to zero-terminated array of byte ranges.
 583  *
 584  * All operations are optional (i.e. the function pointer may be set
 585  * to %NULL) and callers must take this into account.  Callers must
 586  * hold the RTNL lock.
 587  *
 588  * See the structures used by these operations for further documentation.
 589  * Note that for all operations using a structure ending with a zero-
 590  * length array, the array is allocated separately in the kernel and
 591  * is passed to the driver as an additional parameter.
 592  *
 593  * See &struct net_device and &struct net_device_ops for documentation
 594  * of the generic netdev features interface.
 595  */
 596 struct ethtool_ops {
 597         u32     cap_link_lanes_supported:1;
 598         u32     supported_coalesce_params;
 599         void    (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
 600         int     (*get_regs_len)(struct net_device *);
 601         void    (*get_regs)(struct net_device *, struct ethtool_regs *, void *);
 602         void    (*get_wol)(struct net_device *, struct ethtool_wolinfo *);
 603         int     (*set_wol)(struct net_device *, struct ethtool_wolinfo *);
 604         u32     (*get_msglevel)(struct net_device *);
 605         void    (*set_msglevel)(struct net_device *, u32);
 606         int     (*nway_reset)(struct net_device *);
 607         u32     (*get_link)(struct net_device *);
 608         int     (*get_link_ext_state)(struct net_device *,
 609                                       struct ethtool_link_ext_state_info *);
 610         int     (*get_eeprom_len)(struct net_device *);
 611         int     (*get_eeprom)(struct net_device *,
 612                               struct ethtool_eeprom *, u8 *);
 613         int     (*set_eeprom)(struct net_device *,
 614                               struct ethtool_eeprom *, u8 *);
 615         int     (*get_coalesce)(struct net_device *,
 616                                 struct ethtool_coalesce *,
 617                                 struct kernel_ethtool_coalesce *,
 618                                 struct netlink_ext_ack *);
 619         int     (*set_coalesce)(struct net_device *,
 620                                 struct ethtool_coalesce *,
 621                                 struct kernel_ethtool_coalesce *,
 622                                 struct netlink_ext_ack *);
 623         void    (*get_ringparam)(struct net_device *,
 624                                  struct ethtool_ringparam *);
 625         int     (*set_ringparam)(struct net_device *,
 626                                  struct ethtool_ringparam *);
 627         void    (*get_pause_stats)(struct net_device *dev,
 628                                    struct ethtool_pause_stats *pause_stats);
 629         void    (*get_pauseparam)(struct net_device *,
 630                                   struct ethtool_pauseparam*);
 631         int     (*set_pauseparam)(struct net_device *,
 632                                   struct ethtool_pauseparam*);
 633         void    (*self_test)(struct net_device *, struct ethtool_test *, u64 *);
 634         void    (*get_strings)(struct net_device *, u32 stringset, u8 *);
 635         int     (*set_phys_id)(struct net_device *, enum ethtool_phys_id_state);
 636         void    (*get_ethtool_stats)(struct net_device *,
 637                                      struct ethtool_stats *, u64 *);
 638         int     (*begin)(struct net_device *);
 639         void    (*complete)(struct net_device *);
 640         u32     (*get_priv_flags)(struct net_device *);
 641         int     (*set_priv_flags)(struct net_device *, u32);
 642         int     (*get_sset_count)(struct net_device *, int);
 643         int     (*get_rxnfc)(struct net_device *,
 644                              struct ethtool_rxnfc *, u32 *rule_locs);
 645         int     (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *);
 646         int     (*flash_device)(struct net_device *, struct ethtool_flash *);
 647         int     (*reset)(struct net_device *, u32 *);
 648         u32     (*get_rxfh_key_size)(struct net_device *);
 649         u32     (*get_rxfh_indir_size)(struct net_device *);
 650         int     (*get_rxfh)(struct net_device *, u32 *indir, u8 *key,
 651                             u8 *hfunc);
 652         int     (*set_rxfh)(struct net_device *, const u32 *indir,
 653                             const u8 *key, const u8 hfunc);
 654         int     (*get_rxfh_context)(struct net_device *, u32 *indir, u8 *key,
 655                                     u8 *hfunc, u32 rss_context);
 656         int     (*set_rxfh_context)(struct net_device *, const u32 *indir,
 657                                     const u8 *key, const u8 hfunc,
 658                                     u32 *rss_context, bool delete);
 659         void    (*get_channels)(struct net_device *, struct ethtool_channels *);
 660         int     (*set_channels)(struct net_device *, struct ethtool_channels *);
 661         int     (*get_dump_flag)(struct net_device *, struct ethtool_dump *);
 662         int     (*get_dump_data)(struct net_device *,
 663                                  struct ethtool_dump *, void *);
 664         int     (*set_dump)(struct net_device *, struct ethtool_dump *);
 665         int     (*get_ts_info)(struct net_device *, struct ethtool_ts_info *);
 666         int     (*get_module_info)(struct net_device *,
 667                                    struct ethtool_modinfo *);
 668         int     (*get_module_eeprom)(struct net_device *,
 669                                      struct ethtool_eeprom *, u8 *);
 670         int     (*get_eee)(struct net_device *, struct ethtool_eee *);
 671         int     (*set_eee)(struct net_device *, struct ethtool_eee *);
 672         int     (*get_tunable)(struct net_device *,
 673                                const struct ethtool_tunable *, void *);
 674         int     (*set_tunable)(struct net_device *,
 675                                const struct ethtool_tunable *, const void *);
 676         int     (*get_per_queue_coalesce)(struct net_device *, u32,
 677                                           struct ethtool_coalesce *);
 678         int     (*set_per_queue_coalesce)(struct net_device *, u32,
 679                                           struct ethtool_coalesce *);
 680         int     (*get_link_ksettings)(struct net_device *,
 681                                       struct ethtool_link_ksettings *);
 682         int     (*set_link_ksettings)(struct net_device *,
 683                                       const struct ethtool_link_ksettings *);
 684         void    (*get_fec_stats)(struct net_device *dev,
 685                                  struct ethtool_fec_stats *fec_stats);
 686         int     (*get_fecparam)(struct net_device *,
 687                                       struct ethtool_fecparam *);
 688         int     (*set_fecparam)(struct net_device *,
 689                                       struct ethtool_fecparam *);
 690         void    (*get_ethtool_phy_stats)(struct net_device *,
 691                                          struct ethtool_stats *, u64 *);
 692         int     (*get_phy_tunable)(struct net_device *,
 693                                    const struct ethtool_tunable *, void *);
 694         int     (*set_phy_tunable)(struct net_device *,
 695                                    const struct ethtool_tunable *, const void *);
 696         int     (*get_module_eeprom_by_page)(struct net_device *dev,
 697                                              const struct ethtool_module_eeprom *page,
 698                                              struct netlink_ext_ack *extack);
 699         void    (*get_eth_phy_stats)(struct net_device *dev,
 700                                      struct ethtool_eth_phy_stats *phy_stats);
 701         void    (*get_eth_mac_stats)(struct net_device *dev,
 702                                      struct ethtool_eth_mac_stats *mac_stats);
 703         void    (*get_eth_ctrl_stats)(struct net_device *dev,
 704                                       struct ethtool_eth_ctrl_stats *ctrl_stats);
 705         void    (*get_rmon_stats)(struct net_device *dev,
 706                                   struct ethtool_rmon_stats *rmon_stats,
 707                                   const struct ethtool_rmon_hist_range **ranges);
 708 };
 709
 710 int ethtool_check_ops(const struct ethtool_ops *ops);
 711
 712 struct ethtool_rx_flow_rule {
 713         struct flow_rule        *rule;
 714         unsigned long           priv[];
 715 };
 716
 717 struct ethtool_rx_flow_spec_input {
 718         const struct ethtool_rx_flow_spec       *fs;
 719         u32                                     rss_ctx;
 720 };
 721
 722 struct ethtool_rx_flow_rule *
 723 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input);
 724 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *rule);
 725
 726 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd);
 727 int ethtool_virtdev_set_link_ksettings(struct net_device *dev,
 728                                        const struct ethtool_link_ksettings *cmd,
 729                                        u32 *dev_speed, u8 *dev_duplex);
 730
 731 struct phy_device;
 732 struct phy_tdr_config;
 733
 734 /**
 735  * struct ethtool_phy_ops - Optional PHY device options
 736  * @get_sset_count: Get number of strings that @get_strings will write.
 737  * @get_strings: Return a set of strings that describe the requested objects
 738  * @get_stats: Return extended statistics about the PHY device.
 739  * @start_cable_test: Start a cable test
 740  * @start_cable_test_tdr: Start a Time Domain Reflectometry cable test
 741  *
 742  * All operations are optional (i.e. the function pointer may be set to %NULL)
 743  * and callers must take this into account. Callers must hold the RTNL lock.
 744  */
 745 struct ethtool_phy_ops {
 746         int (*get_sset_count)(struct phy_device *dev);
 747         int (*get_strings)(struct phy_device *dev, u8 *data);
 748         int (*get_stats)(struct phy_device *dev,
 749                          struct ethtool_stats *stats, u64 *data);
 750         int (*start_cable_test)(struct phy_device *phydev,
 751                                 struct netlink_ext_ack *extack);
 752         int (*start_cable_test_tdr)(struct phy_device *phydev,
 753                                     struct netlink_ext_ack *extack,
 754                                     const struct phy_tdr_config *config);
 755 };
 756
 757 /**
 758  * ethtool_set_ethtool_phy_ops - Set the ethtool_phy_ops singleton
 759  * @ops: Ethtool PHY operations to set
 760  */
 761 void ethtool_set_ethtool_phy_ops(const struct ethtool_phy_ops *ops);
 762
 763 /**
 764  * ethtool_params_from_link_mode - Derive link parameters from a given link mode
 765  * @link_ksettings: Link parameters to be derived from the link mode
 766  * @link_mode: Link mode
 767  */
 768 void
 769 ethtool_params_from_link_mode(struct ethtool_link_ksettings *link_ksettings,
 770                               enum ethtool_link_mode_bit_indices link_mode);
 771
 772 /**
 773  * ethtool_get_phc_vclocks - Derive phc vclocks information, and caller
 774  *                           is responsible to free memory of vclock_index
 775  * @dev: pointer to net_device structure
 776  * @vclock_index: pointer to pointer of vclock index
 777  *
 778  * Return number of phc vclocks
 779  */
 780 int ethtool_get_phc_vclocks(struct net_device *dev, int **vclock_index);
 781
 782 /**
 783  * ethtool_sprintf - Write formatted string to ethtool string data
 784  * @data: Pointer to start of string to update
 785  * @fmt: Format of string to write
 786  *
 787  * Write formatted string to data. Update data to point at start of
 788  * next string.
 789  */
 790 extern __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...);
 791 #endif /* _LINUX_ETHTOOL_H */