text: /* SPDX-License-Identifier: GPL-2.0 */
  /*
   * ethtool.h: Defines for Linux ethtool.
   *
   * Copyright (C) 1998 David S. Miller (davem@redhat.com)
   * Copyright 2001 Jeff Garzik <jgarzik@pobox.com>
   * Portions Copyright 2001 Sun Microsystems (thockin@sun.com)
   * Portions Copyright 2002 Intel (eli.kupermann@intel.com,
   *                                christopher.leech@intel.com,
   *                                scott.feldman@intel.com)
   * Portions Copyright (C) Sun Microsystems 2008
   */
  #ifndef _LINUX_ETHTOOL_H
  #define _LINUX_ETHTOOL_H
  
  #include <linux/bitmap.h>
  #include <linux/compat.h>
  #include <uapi/linux/ethtool.h>
  
  #ifdef CONFIG_COMPAT
  
  struct compat_ethtool_rx_flow_spec {
  	u32		flow_type;
  	union ethtool_flow_union h_u;
  	struct ethtool_flow_ext h_ext;
  	union ethtool_flow_union m_u;
  	struct ethtool_flow_ext m_ext;
  	compat_u64	ring_cookie;
  	u32		location;
  };
  
  struct compat_ethtool_rxnfc {
  	u32				cmd;
  	u32				flow_type;
  	compat_u64			data;
  	struct compat_ethtool_rx_flow_spec fs;
  	u32				rule_cnt;
  	u32				rule_locs[];
  };
  
  #endif /* CONFIG_COMPAT */
  
  #include <linux/rculist.h>
  
  /**
   * enum ethtool_phys_id_state - indicator state for physical identification
   * @ETHTOOL_ID_INACTIVE: Physical ID indicator should be deactivated
   * @ETHTOOL_ID_ACTIVE: Physical ID indicator should be activated
   * @ETHTOOL_ID_ON: LED should be turned on (used iff %ETHTOOL_ID_ACTIVE
   *	is not supported)
   * @ETHTOOL_ID_OFF: LED should be turned off (used iff %ETHTOOL_ID_ACTIVE
   *	is not supported)
   */
  enum ethtool_phys_id_state {
  	ETHTOOL_ID_INACTIVE,
  	ETHTOOL_ID_ACTIVE,
  	ETHTOOL_ID_ON,
  	ETHTOOL_ID_OFF
  };
  
  enum {
  	ETH_RSS_HASH_TOP_BIT, /* Configurable RSS hash function - Toeplitz */
  	ETH_RSS_HASH_XOR_BIT, /* Configurable RSS hash function - Xor */
  	ETH_RSS_HASH_CRC32_BIT, /* Configurable RSS hash function - Crc32 */
  
  	/*
  	 * Add your fresh new hash function bits above and remember to update
  	 * rss_hash_func_strings[] in ethtool.c
  	 */
  	ETH_RSS_HASH_FUNCS_COUNT
  };
  
  #define __ETH_RSS_HASH_BIT(bit)	((u32)1 << (bit))
  #define __ETH_RSS_HASH(name)	__ETH_RSS_HASH_BIT(ETH_RSS_HASH_##name##_BIT)
  
  #define ETH_RSS_HASH_TOP	__ETH_RSS_HASH(TOP)
  #define ETH_RSS_HASH_XOR	__ETH_RSS_HASH(XOR)
  #define ETH_RSS_HASH_CRC32	__ETH_RSS_HASH(CRC32)
  
  #define ETH_RSS_HASH_UNKNOWN	0
  #define ETH_RSS_HASH_NO_CHANGE	0
  
  struct net_device;
  
  /* Some generic methods drivers may use in their ethtool_ops */
  u32 ethtool_op_get_link(struct net_device *dev);
  int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *eti);
  
  
  /* Link extended state and substate. */
  struct ethtool_link_ext_state_info {
  	enum ethtool_link_ext_state link_ext_state;
  	union {
  		enum ethtool_link_ext_substate_autoneg autoneg;
  		enum ethtool_link_ext_substate_link_training link_training;
  		enum ethtool_link_ext_substate_link_logical_mismatch link_logical_mismatch;
  		enum ethtool_link_ext_substate_bad_signal_integrity bad_signal_integrity;
  		enum ethtool_link_ext_substate_cable_issue cable_issue;
  		u8 __link_ext_substate;
  	};
  };
  
  /**
   * ethtool_rxfh_indir_default - get default value for RX flow hash indirection
   * @index: Index in RX flow hash indirection table
   * @n_rx_rings: Number of RX rings to use
   *
   * This function provides the default policy for RX flow hash indirection.
   */
  static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
  {
  	return index % n_rx_rings;
  }
  
  /* declare a link mode bitmap */
  #define __ETHTOOL_DECLARE_LINK_MODE_MASK(name)		\
  	DECLARE_BITMAP(name, __ETHTOOL_LINK_MODE_MASK_NBITS)
  
  /* drivers must ignore base.cmd and base.link_mode_masks_nwords
   * fields, but they are allowed to overwrite them (will be ignored).
   */
  struct ethtool_link_ksettings {
  	struct ethtool_link_settings base;
  	struct {
  		__ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
  		__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
  		__ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
  	} link_modes;
  	u32	lanes;
  };
  
  /**
   * ethtool_link_ksettings_zero_link_mode - clear link_ksettings link mode mask
   *   @ptr : pointer to struct ethtool_link_ksettings
   *   @name : one of supported/advertising/lp_advertising
   */
  #define ethtool_link_ksettings_zero_link_mode(ptr, name)		\
  	bitmap_zero((ptr)->link_modes.name, __ETHTOOL_LINK_MODE_MASK_NBITS)
  
  /**
   * ethtool_link_ksettings_add_link_mode - set bit in link_ksettings
   * link mode mask
   *   @ptr : pointer to struct ethtool_link_ksettings
   *   @name : one of supported/advertising/lp_advertising
   *   @mode : one of the ETHTOOL_LINK_MODE_*_BIT
   * (not atomic, no bound checking)
   */
  #define ethtool_link_ksettings_add_link_mode(ptr, name, mode)		\
  	__set_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
  
  /**
   * ethtool_link_ksettings_del_link_mode - clear bit in link_ksettings
   * link mode mask
   *   @ptr : pointer to struct ethtool_link_ksettings
   *   @name : one of supported/advertising/lp_advertising
   *   @mode : one of the ETHTOOL_LINK_MODE_*_BIT
   * (not atomic, no bound checking)
   */
  #define ethtool_link_ksettings_del_link_mode(ptr, name, mode)		\
  	__clear_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
  
  /**
   * ethtool_link_ksettings_test_link_mode - test bit in ksettings link mode mask
   *   @ptr : pointer to struct ethtool_link_ksettings
   *   @name : one of supported/advertising/lp_advertising
   *   @mode : one of the ETHTOOL_LINK_MODE_*_BIT
   * (not atomic, no bound checking)
   *
   * Returns true/false.
   */
  #define ethtool_link_ksettings_test_link_mode(ptr, name, mode)		\
  	test_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
  
  extern int
  __ethtool_get_link_ksettings(struct net_device *dev,
  			     struct ethtool_link_ksettings *link_ksettings);
  
  /**
   * ethtool_intersect_link_masks - Given two link masks, AND them together
   * @dst: first mask and where result is stored
   * @src: second mask to intersect with
   *
   * Given two link mode masks, AND them together and save the result in dst.
   */
  void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
  				  struct ethtool_link_ksettings *src);
  
  void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
  					     u32 legacy_u32);
  
  /* return false if src had higher bits set. lower bits always updated. */
  bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
  				     const unsigned long *src);
  
  #define ETHTOOL_COALESCE_RX_USECS		BIT(0)
  #define ETHTOOL_COALESCE_RX_MAX_FRAMES		BIT(1)
  #define ETHTOOL_COALESCE_RX_USECS_IRQ		BIT(2)
  #define ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ	BIT(3)
  #define ETHTOOL_COALESCE_TX_USECS		BIT(4)
  #define ETHTOOL_COALESCE_TX_MAX_FRAMES		BIT(5)
  #define ETHTOOL_COALESCE_TX_USECS_IRQ		BIT(6)
  #define ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ	BIT(7)
  #define ETHTOOL_COALESCE_STATS_BLOCK_USECS	BIT(8)
  #define ETHTOOL_COALESCE_USE_ADAPTIVE_RX	BIT(9)
  #define ETHTOOL_COALESCE_USE_ADAPTIVE_TX	BIT(10)
  #define ETHTOOL_COALESCE_PKT_RATE_LOW		BIT(11)
  #define ETHTOOL_COALESCE_RX_USECS_LOW		BIT(12)
  #define ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW	BIT(13)
  #define ETHTOOL_COALESCE_TX_USECS_LOW		BIT(14)
  #define ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW	BIT(15)
  #define ETHTOOL_COALESCE_PKT_RATE_HIGH		BIT(16)
  #define ETHTOOL_COALESCE_RX_USECS_HIGH		BIT(17)
  #define ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH	BIT(18)
  #define ETHTOOL_COALESCE_TX_USECS_HIGH		BIT(19)
  #define ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH	BIT(20)
  #define ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL	BIT(21)
  #define ETHTOOL_COALESCE_ALL_PARAMS		GENMASK(21, 0)
  
  #define ETHTOOL_COALESCE_USECS						\
  	(ETHTOOL_COALESCE_RX_USECS | ETHTOOL_COALESCE_TX_USECS)
  #define ETHTOOL_COALESCE_MAX_FRAMES					\
  	(ETHTOOL_COALESCE_RX_MAX_FRAMES | ETHTOOL_COALESCE_TX_MAX_FRAMES)
  #define ETHTOOL_COALESCE_USECS_IRQ					\
  	(ETHTOOL_COALESCE_RX_USECS_IRQ | ETHTOOL_COALESCE_TX_USECS_IRQ)
  #define ETHTOOL_COALESCE_MAX_FRAMES_IRQ		\
  	(ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ |	\
  	 ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ)
  #define ETHTOOL_COALESCE_USE_ADAPTIVE					\
  	(ETHTOOL_COALESCE_USE_ADAPTIVE_RX | ETHTOOL_COALESCE_USE_ADAPTIVE_TX)
  #define ETHTOOL_COALESCE_USECS_LOW_HIGH					\
  	(ETHTOOL_COALESCE_RX_USECS_LOW | ETHTOOL_COALESCE_TX_USECS_LOW | \
  	 ETHTOOL_COALESCE_RX_USECS_HIGH | ETHTOOL_COALESCE_TX_USECS_HIGH)
  #define ETHTOOL_COALESCE_MAX_FRAMES_LOW_HIGH	\
  	(ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW |	\
  	 ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW |	\
  	 ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH |	\
  	 ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH)
  #define ETHTOOL_COALESCE_PKT_RATE_RX_USECS				\
  	(ETHTOOL_COALESCE_USE_ADAPTIVE_RX |				\
  	 ETHTOOL_COALESCE_RX_USECS_LOW | ETHTOOL_COALESCE_RX_USECS_HIGH | \
  	 ETHTOOL_COALESCE_PKT_RATE_LOW | ETHTOOL_COALESCE_PKT_RATE_HIGH | \
  	 ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL)
  
  #define ETHTOOL_STAT_NOT_SET	(~0ULL)
  
  /**
   * struct ethtool_pause_stats - statistics for IEEE 802.3x pause frames
   * @tx_pause_frames: transmitted pause frame count. Reported to user space
   *	as %ETHTOOL_A_PAUSE_STAT_TX_FRAMES.
   *
   *	Equivalent to `30.3.4.2 aPAUSEMACCtrlFramesTransmitted`
   *	from the standard.
   *
   * @rx_pause_frames: received pause frame count. Reported to user space
   *	as %ETHTOOL_A_PAUSE_STAT_RX_FRAMES. Equivalent to:
   *
   *	Equivalent to `30.3.4.3 aPAUSEMACCtrlFramesReceived`
   *	from the standard.
   */
  struct ethtool_pause_stats {
  	u64 tx_pause_frames;
  	u64 rx_pause_frames;
  };
  
  /**
   * struct ethtool_ops - optional netdev operations
   * @cap_link_lanes_supported: indicates if the driver supports lanes
   *	parameter.
   * @supported_coalesce_params: supported types of interrupt coalescing.
   * @get_drvinfo: Report driver/device information.  Should only set the
   *	@driver, @version, @fw_version and @bus_info fields.  If not
   *	implemented, the @driver and @bus_info fields will be filled in
   *	according to the netdev's parent device.
   * @get_regs_len: Get buffer length required for @get_regs
   * @get_regs: Get device registers
   * @get_wol: Report whether Wake-on-Lan is enabled
   * @set_wol: Turn Wake-on-Lan on or off.  Returns a negative error code
   *	or zero.
   * @get_msglevel: Report driver message level.  This should be the value
   *	of the @msg_enable field used by netif logging functions.
   * @set_msglevel: Set driver message level
   * @nway_reset: Restart autonegotiation.  Returns a negative error code
   *	or zero.
   * @get_link: Report whether physical link is up.  Will only be called if
   *	the netdev is up.  Should usually be set to ethtool_op_get_link(),
   *	which uses netif_carrier_ok().
   * @get_link_ext_state: Report link extended state. Should set link_ext_state and
   *	link_ext_substate (link_ext_substate of 0 means link_ext_substate is unknown,
   *	do not attach ext_substate attribute to netlink message). If link_ext_state
   *	and link_ext_substate are unknown, return -ENODATA. If not implemented,
   *	link_ext_state and link_ext_substate will not be sent to userspace.
   * @get_eeprom_len: Read range of EEPROM addresses for validation of
   *	@get_eeprom and @set_eeprom requests.
   *	Returns 0 if device does not support EEPROM access.
   * @get_eeprom: Read data from the device EEPROM.
   *	Should fill in the magic field.  Don't need to check len for zero
   *	or wraparound.  Fill in the data argument with the eeprom values
   *	from offset to offset + len.  Update len to the amount read.
   *	Returns an error or zero.
   * @set_eeprom: Write data to the device EEPROM.
   *	Should validate the magic field.  Don't need to check len for zero
   *	or wraparound.  Update len to the amount written.  Returns an error
   *	or zero.
   * @get_coalesce: Get interrupt coalescing parameters.  Returns a negative
   *	error code or zero.
   * @set_coalesce: Set interrupt coalescing parameters.  Supported coalescing
   *	types should be set in @supported_coalesce_params.
   *	Returns a negative error code or zero.
   * @get_ringparam: Report ring sizes
   * @set_ringparam: Set ring sizes.  Returns a negative error code or zero.
   * @get_pause_stats: Report pause frame statistics. Drivers must not zero
   *	statistics which they don't report. The stats structure is initialized
   *	to ETHTOOL_STAT_NOT_SET indicating driver does not report statistics.
   * @get_pauseparam: Report pause parameters
   * @set_pauseparam: Set pause parameters.  Returns a negative error code
   *	or zero.
   * @self_test: Run specified self-tests
   * @get_strings: Return a set of strings that describe the requested objects
   * @set_phys_id: Identify the physical devices, e.g. by flashing an LED
   *	attached to it.  The implementation may update the indicator
   *	asynchronously or synchronously, but in either case it must return
   *	quickly.  It is initially called with the argument %ETHTOOL_ID_ACTIVE,
   *	and must either activate asynchronous updates and return zero, return
   *	a negative error or return a positive frequency for synchronous
   *	indication (e.g. 1 for one on/off cycle per second).  If it returns
   *	a frequency then it will be called again at intervals with the
   *	argument %ETHTOOL_ID_ON or %ETHTOOL_ID_OFF and should set the state of
   *	the indicator accordingly.  Finally, it is called with the argument
   *	%ETHTOOL_ID_INACTIVE and must deactivate the indicator.  Returns a
   *	negative error code or zero.
   * @get_ethtool_stats: Return extended statistics about the device.
   *	This is only useful if the device maintains statistics not
   *	included in &struct rtnl_link_stats64.
   * @begin: Function to be called before any other operation.  Returns a
   *	negative error code or zero.
   * @complete: Function to be called after any other operation except
   *	@begin.  Will be called even if the other operation failed.
   * @get_priv_flags: Report driver-specific feature flags.
   * @set_priv_flags: Set driver-specific feature flags.  Returns a negative
   *	error code or zero.
   * @get_sset_count: Get number of strings that @get_strings will write.
   * @get_rxnfc: Get RX flow classification rules.  Returns a negative
   *	error code or zero.
   * @set_rxnfc: Set RX flow classification rules.  Returns a negative
   *	error code or zero.
   * @flash_device: Write a firmware image to device's flash memory.
   *	Returns a negative error code or zero.
   * @reset: Reset (part of) the device, as specified by a bitmask of
   *	flags from &enum ethtool_reset_flags.  Returns a negative
   *	error code or zero.
   * @get_rxfh_key_size: Get the size of the RX flow hash key.
   *	Returns zero if not supported for this specific device.
   * @get_rxfh_indir_size: Get the size of the RX flow hash indirection table.
   *	Returns zero if not supported for this specific device.
   * @get_rxfh: Get the contents of the RX flow hash indirection table, hash key
   *	and/or hash function.
   *	Returns a negative error code or zero.
   * @set_rxfh: Set the contents of the RX flow hash indirection table, hash
   *	key, and/or hash function.  Arguments which are set to %NULL or zero
   *	will remain unchanged.
   *	Returns a negative error code or zero. An error code must be returned
   *	if at least one unsupported change was requested.
   * @get_rxfh_context: Get the contents of the RX flow hash indirection table,
   *	hash key, and/or hash function assiciated to the given rss context.
   *	Returns a negative error code or zero.
   * @set_rxfh_context: Create, remove and configure RSS contexts. Allows setting
   *	the contents of the RX flow hash indirection table, hash key, and/or
   *	hash function associated to the given context. Arguments which are set
   *	to %NULL or zero will remain unchanged.
   *	Returns a negative error code or zero. An error code must be returned
   *	if at least one unsupported change was requested.
   * @get_channels: Get number of channels.
   * @set_channels: Set number of channels.  Returns a negative error code or
   *	zero.
   * @get_dump_flag: Get dump flag indicating current dump length, version,
   * 		   and flag of the device.
   * @get_dump_data: Get dump data.
   * @set_dump: Set dump specific flags to the device.
   * @get_ts_info: Get the time stamping and PTP hardware clock capabilities.
   *	Drivers supporting transmit time stamps in software should set this to
   *	ethtool_op_get_ts_info().
   * @get_module_info: Get the size and type of the eeprom contained within
   *	a plug-in module.
   * @get_module_eeprom: Get the eeprom information from the plug-in module
   * @get_eee: Get Energy-Efficient (EEE) supported and status.
   * @set_eee: Set EEE status (enable/disable) as well as LPI timers.
   * @get_tunable: Read the value of a driver / device tunable.
   * @set_tunable: Set the value of a driver / device tunable.
   * @get_per_queue_coalesce: Get interrupt coalescing parameters per queue.
   *	It must check that the given queue number is valid. If neither a RX nor
   *	a TX queue has this number, return -EINVAL. If only a RX queue or a TX
   *	queue has this number, set the inapplicable fields to ~0 and return 0.
   *	Returns a negative error code or zero.
   * @set_per_queue_coalesce: Set interrupt coalescing parameters per queue.
   *	It must check that the given queue number is valid. If neither a RX nor
   *	a TX queue has this number, return -EINVAL. If only a RX queue or a TX
   *	queue has this number, ignore the inapplicable fields. Supported
   *	coalescing types should be set in @supported_coalesce_params.
   *	Returns a negative error code or zero.
   * @get_link_ksettings: Get various device settings including Ethernet link
   *	settings. The %cmd and %link_mode_masks_nwords fields should be
   *	ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter),
   *	any change to them will be overwritten by kernel. Returns a negative
   *	error code or zero.
   * @set_link_ksettings: Set various device settings including Ethernet link
   *	settings. The %cmd and %link_mode_masks_nwords fields should be
   *	ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter),
   *	any change to them will be overwritten by kernel. Returns a negative
   *	error code or zero.
   * @get_fecparam: Get the network device Forward Error Correction parameters.
   * @set_fecparam: Set the network device Forward Error Correction parameters.
   * @get_ethtool_phy_stats: Return extended statistics about the PHY device.
   *	This is only useful if the device maintains PHY statistics and
   *	cannot use the standard PHY library helpers.
   *
   * All operations are optional (i.e. the function pointer may be set
   * to %NULL) and callers must take this into account.  Callers must
   * hold the RTNL lock.
   *
   * See the structures used by these operations for further documentation.
   * Note that for all operations using a structure ending with a zero-
   * length array, the array is allocated separately in the kernel and
   * is passed to the driver as an additional parameter.
   *
   * See &struct net_device and &struct net_device_ops for documentation
   * of the generic netdev features interface.
   */
  struct ethtool_ops {
  	u32     cap_link_lanes_supported:1;
  	u32	supported_coalesce_params;
  	void	(*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
  	int	(*get_regs_len)(struct net_device *);
  	void	(*get_regs)(struct net_device *, struct ethtool_regs *, void *);
  	void	(*get_wol)(struct net_device *, struct ethtool_wolinfo *);
  	int	(*set_wol)(struct net_device *, struct ethtool_wolinfo *);
  	u32	(*get_msglevel)(struct net_device *);
  	void	(*set_msglevel)(struct net_device *, u32);
  	int	(*nway_reset)(struct net_device *);
  	u32	(*get_link)(struct net_device *);
  	int	(*get_link_ext_state)(struct net_device *,
  				      struct ethtool_link_ext_state_info *);
  	int	(*get_eeprom_len)(struct net_device *);
  	int	(*get_eeprom)(struct net_device *,
  			      struct ethtool_eeprom *, u8 *);
  	int	(*set_eeprom)(struct net_device *,
  			      struct ethtool_eeprom *, u8 *);
  	int	(*get_coalesce)(struct net_device *, struct ethtool_coalesce *);
  	int	(*set_coalesce)(struct net_device *, struct ethtool_coalesce *);
  	void	(*get_ringparam)(struct net_device *,
  				 struct ethtool_ringparam *);
  	int	(*set_ringparam)(struct net_device *,
  				 struct ethtool_ringparam *);
  	void	(*get_pause_stats)(struct net_device *dev,
  				   struct ethtool_pause_stats *pause_stats);
  	void	(*get_pauseparam)(struct net_device *,
  				  struct ethtool_pauseparam*);
  	int	(*set_pauseparam)(struct net_device *,
  				  struct ethtool_pauseparam*);
  	void	(*self_test)(struct net_device *, struct ethtool_test *, u64 *);
  	void	(*get_strings)(struct net_device *, u32 stringset, u8 *);
  	int	(*set_phys_id)(struct net_device *, enum ethtool_phys_id_state);
  	void	(*get_ethtool_stats)(struct net_device *,
  				     struct ethtool_stats *, u64 *);
  	int	(*begin)(struct net_device *);
  	void	(*complete)(struct net_device *);
  	u32	(*get_priv_flags)(struct net_device *);
  	int	(*set_priv_flags)(struct net_device *, u32);
  	int	(*get_sset_count)(struct net_device *, int);
  	int	(*get_rxnfc)(struct net_device *,
  			     struct ethtool_rxnfc *, u32 *rule_locs);
  	int	(*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *);
  	int	(*flash_device)(struct net_device *, struct ethtool_flash *);
  	int	(*reset)(struct net_device *, u32 *);
  	u32	(*get_rxfh_key_size)(struct net_device *);
  	u32	(*get_rxfh_indir_size)(struct net_device *);
  	int	(*get_rxfh)(struct net_device *, u32 *indir, u8 *key,
  			    u8 *hfunc);
  	int	(*set_rxfh)(struct net_device *, const u32 *indir,
  			    const u8 *key, const u8 hfunc);
  	int	(*get_rxfh_context)(struct net_device *, u32 *indir, u8 *key,
  				    u8 *hfunc, u32 rss_context);
  	int	(*set_rxfh_context)(struct net_device *, const u32 *indir,
  				    const u8 *key, const u8 hfunc,
  				    u32 *rss_context, bool delete);
  	void	(*get_channels)(struct net_device *, struct ethtool_channels *);
  	int	(*set_channels)(struct net_device *, struct ethtool_channels *);
  	int	(*get_dump_flag)(struct net_device *, struct ethtool_dump *);
  	int	(*get_dump_data)(struct net_device *,
  				 struct ethtool_dump *, void *);
  	int	(*set_dump)(struct net_device *, struct ethtool_dump *);
  	int	(*get_ts_info)(struct net_device *, struct ethtool_ts_info *);
  	int     (*get_module_info)(struct net_device *,
  				   struct ethtool_modinfo *);
  	int     (*get_module_eeprom)(struct net_device *,
  				     struct ethtool_eeprom *, u8 *);
  	int	(*get_eee)(struct net_device *, struct ethtool_eee *);
  	int	(*set_eee)(struct net_device *, struct ethtool_eee *);
  	int	(*get_tunable)(struct net_device *,
  			       const struct ethtool_tunable *, void *);
  	int	(*set_tunable)(struct net_device *,
  			       const struct ethtool_tunable *, const void *);
  	int	(*get_per_queue_coalesce)(struct net_device *, u32,
  					  struct ethtool_coalesce *);
  	int	(*set_per_queue_coalesce)(struct net_device *, u32,
  					  struct ethtool_coalesce *);
  	int	(*get_link_ksettings)(struct net_device *,
  				      struct ethtool_link_ksettings *);
  	int	(*set_link_ksettings)(struct net_device *,
  				      const struct ethtool_link_ksettings *);
  	int	(*get_fecparam)(struct net_device *,
  				      struct ethtool_fecparam *);
  	int	(*set_fecparam)(struct net_device *,
  				      struct ethtool_fecparam *);
  	void	(*get_ethtool_phy_stats)(struct net_device *,
  					 struct ethtool_stats *, u64 *);
  	int	(*get_phy_tunable)(struct net_device *,
  				   const struct ethtool_tunable *, void *);
  	int	(*set_phy_tunable)(struct net_device *,
  				   const struct ethtool_tunable *, const void *);
  };
  
  int ethtool_check_ops(const struct ethtool_ops *ops);
  
  struct ethtool_rx_flow_rule {
  	struct flow_rule	*rule;
  	unsigned long		priv[];
  };
  
  struct ethtool_rx_flow_spec_input {
  	const struct ethtool_rx_flow_spec	*fs;
  	u32					rss_ctx;
  };
  
  struct ethtool_rx_flow_rule *
  ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input);
  void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *rule);
  
  bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd);
  int ethtool_virtdev_set_link_ksettings(struct net_device *dev,
  				       const struct ethtool_link_ksettings *cmd,
  				       u32 *dev_speed, u8 *dev_duplex);
  
  struct netlink_ext_ack;
  struct phy_device;
  struct phy_tdr_config;
  
  /**
   * struct ethtool_phy_ops - Optional PHY device options
   * @get_sset_count: Get number of strings that @get_strings will write.
   * @get_strings: Return a set of strings that describe the requested objects
   * @get_stats: Return extended statistics about the PHY device.
   * @start_cable_test: Start a cable test
   * @start_cable_test_tdr: Start a Time Domain Reflectometry cable test
   *
   * All operations are optional (i.e. the function pointer may be set to %NULL)
   * and callers must take this into account. Callers must hold the RTNL lock.
   */
  struct ethtool_phy_ops {
  	int (*get_sset_count)(struct phy_device *dev);
  	int (*get_strings)(struct phy_device *dev, u8 *data);
  	int (*get_stats)(struct phy_device *dev,
  			 struct ethtool_stats *stats, u64 *data);
  	int (*start_cable_test)(struct phy_device *phydev,
  				struct netlink_ext_ack *extack);
  	int (*start_cable_test_tdr)(struct phy_device *phydev,
  				    struct netlink_ext_ack *extack,
  				    const struct phy_tdr_config *config);
  };
  
  /**
   * ethtool_set_ethtool_phy_ops - Set the ethtool_phy_ops singleton
   * @ops: Ethtool PHY operations to set
   */
  void ethtool_set_ethtool_phy_ops(const struct ethtool_phy_ops *ops);
  
  /*
   * ethtool_params_from_link_mode - Derive link parameters from a given link mode
   * @link_ksettings: Link parameters to be derived from the link mode
   * @link_mode: Link mode
   */
  void
  ethtool_params_from_link_mode(struct ethtool_link_ksettings *link_ksettings,
  			      enum ethtool_link_mode_bit_indices link_mode);
  #endif /* _LINUX_ETHTOOL_H */
  