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      1 /*
      2  * ethtool.h: Defines for Linux ethtool.
      3  *
      4  * Copyright (C) 1998 David S. Miller (davem (at) redhat.com)
      5  * Copyright 2001 Jeff Garzik <jgarzik (at) pobox.com>
      6  * Portions Copyright 2001 Sun Microsystems (thockin (at) sun.com)
      7  * Portions Copyright 2002 Intel (eli.kupermann (at) intel.com,
      8  *                                christopher.leech (at) intel.com,
      9  *                                scott.feldman (at) intel.com)
     10  * Portions Copyright (C) Sun Microsystems 2008
     11  */
     12 
     13 #ifndef _UAPI_LINUX_ETHTOOL_H
     14 #define _UAPI_LINUX_ETHTOOL_H
     15 
     16 #include <linux/kernel.h>
     17 #include <linux/types.h>
     18 #include <linux/if_ether.h>
     19 
     20 #ifndef __KERNEL__
     21 #include <limits.h> /* for INT_MAX */
     22 #endif
     23 
     24 /* All structures exposed to userland should be defined such that they
     25  * have the same layout for 32-bit and 64-bit userland.
     26  */
     27 
     28 /**
     29  * struct ethtool_cmd - DEPRECATED, link control and status
     30  * This structure is DEPRECATED, please use struct ethtool_link_settings.
     31  * @cmd: Command number = %ETHTOOL_GSET or %ETHTOOL_SSET
     32  * @supported: Bitmask of %SUPPORTED_* flags for the link modes,
     33  *	physical connectors and other link features for which the
     34  *	interface supports autonegotiation or auto-detection.
     35  *	Read-only.
     36  * @advertising: Bitmask of %ADVERTISED_* flags for the link modes,
     37  *	physical connectors and other link features that are
     38  *	advertised through autonegotiation or enabled for
     39  *	auto-detection.
     40  * @speed: Low bits of the speed, 1Mb units, 0 to INT_MAX or SPEED_UNKNOWN
     41  * @duplex: Duplex mode; one of %DUPLEX_*
     42  * @port: Physical connector type; one of %PORT_*
     43  * @phy_address: MDIO address of PHY (transceiver); 0 or 255 if not
     44  *	applicable.  For clause 45 PHYs this is the PRTAD.
     45  * @transceiver: Historically used to distinguish different possible
     46  *	PHY types, but not in a consistent way.  Deprecated.
     47  * @autoneg: Enable/disable autonegotiation and auto-detection;
     48  *	either %AUTONEG_DISABLE or %AUTONEG_ENABLE
     49  * @mdio_support: Bitmask of %ETH_MDIO_SUPPORTS_* flags for the MDIO
     50  *	protocols supported by the interface; 0 if unknown.
     51  *	Read-only.
     52  * @maxtxpkt: Historically used to report TX IRQ coalescing; now
     53  *	obsoleted by &struct ethtool_coalesce.  Read-only; deprecated.
     54  * @maxrxpkt: Historically used to report RX IRQ coalescing; now
     55  *	obsoleted by &struct ethtool_coalesce.  Read-only; deprecated.
     56  * @speed_hi: High bits of the speed, 1Mb units, 0 to INT_MAX or SPEED_UNKNOWN
     57  * @eth_tp_mdix: Ethernet twisted-pair MDI(-X) status; one of
     58  *	%ETH_TP_MDI_*.  If the status is unknown or not applicable, the
     59  *	value will be %ETH_TP_MDI_INVALID.  Read-only.
     60  * @eth_tp_mdix_ctrl: Ethernet twisted pair MDI(-X) control; one of
     61  *	%ETH_TP_MDI_*.  If MDI(-X) control is not implemented, reads
     62  *	yield %ETH_TP_MDI_INVALID and writes may be ignored or rejected.
     63  *	When written successfully, the link should be renegotiated if
     64  *	necessary.
     65  * @lp_advertising: Bitmask of %ADVERTISED_* flags for the link modes
     66  *	and other link features that the link partner advertised
     67  *	through autonegotiation; 0 if unknown or not applicable.
     68  *	Read-only.
     69  *
     70  * The link speed in Mbps is split between @speed and @speed_hi.  Use
     71  * the ethtool_cmd_speed() and ethtool_cmd_speed_set() functions to
     72  * access it.
     73  *
     74  * If autonegotiation is disabled, the speed and @duplex represent the
     75  * fixed link mode and are writable if the driver supports multiple
     76  * link modes.  If it is enabled then they are read-only; if the link
     77  * is up they represent the negotiated link mode; if the link is down,
     78  * the speed is 0, %SPEED_UNKNOWN or the highest enabled speed and
     79  * @duplex is %DUPLEX_UNKNOWN or the best enabled duplex mode.
     80  *
     81  * Some hardware interfaces may have multiple PHYs and/or physical
     82  * connectors fitted or do not allow the driver to detect which are
     83  * fitted.  For these interfaces @port and/or @phy_address may be
     84  * writable, possibly dependent on @autoneg being %AUTONEG_DISABLE.
     85  * Otherwise, attempts to write different values may be ignored or
     86  * rejected.
     87  *
     88  * Users should assume that all fields not marked read-only are
     89  * writable and subject to validation by the driver.  They should use
     90  * %ETHTOOL_GSET to get the current values before making specific
     91  * changes and then applying them with %ETHTOOL_SSET.
     92  *
     93  * Drivers that implement set_settings() should validate all fields
     94  * other than @cmd that are not described as read-only or deprecated,
     95  * and must ignore all fields described as read-only.
     96  *
     97  * Deprecated fields should be ignored by both users and drivers.
     98  */
     99 struct ethtool_cmd {
    100 	__u32	cmd;
    101 	__u32	supported;
    102 	__u32	advertising;
    103 	__u16	speed;
    104 	__u8	duplex;
    105 	__u8	port;
    106 	__u8	phy_address;
    107 	__u8	transceiver;
    108 	__u8	autoneg;
    109 	__u8	mdio_support;
    110 	__u32	maxtxpkt;
    111 	__u32	maxrxpkt;
    112 	__u16	speed_hi;
    113 	__u8	eth_tp_mdix;
    114 	__u8	eth_tp_mdix_ctrl;
    115 	__u32	lp_advertising;
    116 	__u32	reserved[2];
    117 };
    118 
    119 static inline void ethtool_cmd_speed_set(struct ethtool_cmd *ep,
    120 					 __u32 speed)
    121 {
    122 	ep->speed = (__u16)(speed & 0xFFFF);
    123 	ep->speed_hi = (__u16)(speed >> 16);
    124 }
    125 
    126 static inline __u32 ethtool_cmd_speed(const struct ethtool_cmd *ep)
    127 {
    128 	return (ep->speed_hi << 16) | ep->speed;
    129 }
    130 
    131 /* Device supports clause 22 register access to PHY or peripherals
    132  * using the interface defined in <linux/mii.h>.  This should not be
    133  * set if there are known to be no such peripherals present or if
    134  * the driver only emulates clause 22 registers for compatibility.
    135  */
    136 #define ETH_MDIO_SUPPORTS_C22	1
    137 
    138 /* Device supports clause 45 register access to PHY or peripherals
    139  * using the interface defined in <linux/mii.h> and <linux/mdio.h>.
    140  * This should not be set if there are known to be no such peripherals
    141  * present.
    142  */
    143 #define ETH_MDIO_SUPPORTS_C45	2
    144 
    145 #define ETHTOOL_FWVERS_LEN	32
    146 #define ETHTOOL_BUSINFO_LEN	32
    147 #define ETHTOOL_EROMVERS_LEN	32
    148 
    149 /**
    150  * struct ethtool_drvinfo - general driver and device information
    151  * @cmd: Command number = %ETHTOOL_GDRVINFO
    152  * @driver: Driver short name.  This should normally match the name
    153  *	in its bus driver structure (e.g. pci_driver::name).  Must
    154  *	not be an empty string.
    155  * @version: Driver version string; may be an empty string
    156  * @fw_version: Firmware version string; may be an empty string
    157  * @erom_version: Expansion ROM version string; may be an empty string
    158  * @bus_info: Device bus address.  This should match the dev_name()
    159  *	string for the underlying bus device, if there is one.  May be
    160  *	an empty string.
    161  * @n_priv_flags: Number of flags valid for %ETHTOOL_GPFLAGS and
    162  *	%ETHTOOL_SPFLAGS commands; also the number of strings in the
    163  *	%ETH_SS_PRIV_FLAGS set
    164  * @n_stats: Number of u64 statistics returned by the %ETHTOOL_GSTATS
    165  *	command; also the number of strings in the %ETH_SS_STATS set
    166  * @testinfo_len: Number of results returned by the %ETHTOOL_TEST
    167  *	command; also the number of strings in the %ETH_SS_TEST set
    168  * @eedump_len: Size of EEPROM accessible through the %ETHTOOL_GEEPROM
    169  *	and %ETHTOOL_SEEPROM commands, in bytes
    170  * @regdump_len: Size of register dump returned by the %ETHTOOL_GREGS
    171  *	command, in bytes
    172  *
    173  * Users can use the %ETHTOOL_GSSET_INFO command to get the number of
    174  * strings in any string set (from Linux 2.6.34).
    175  *
    176  * Drivers should set at most @driver, @version, @fw_version and
    177  * @bus_info in their get_drvinfo() implementation.  The ethtool
    178  * core fills in the other fields using other driver operations.
    179  */
    180 struct ethtool_drvinfo {
    181 	__u32	cmd;
    182 	char	driver[32];
    183 	char	version[32];
    184 	char	fw_version[ETHTOOL_FWVERS_LEN];
    185 	char	bus_info[ETHTOOL_BUSINFO_LEN];
    186 	char	erom_version[ETHTOOL_EROMVERS_LEN];
    187 	char	reserved2[12];
    188 	__u32	n_priv_flags;
    189 	__u32	n_stats;
    190 	__u32	testinfo_len;
    191 	__u32	eedump_len;
    192 	__u32	regdump_len;
    193 };
    194 
    195 #define SOPASS_MAX	6
    196 
    197 /**
    198  * struct ethtool_wolinfo - Wake-On-Lan configuration
    199  * @cmd: Command number = %ETHTOOL_GWOL or %ETHTOOL_SWOL
    200  * @supported: Bitmask of %WAKE_* flags for supported Wake-On-Lan modes.
    201  *	Read-only.
    202  * @wolopts: Bitmask of %WAKE_* flags for enabled Wake-On-Lan modes.
    203  * @sopass: SecureOn(tm) password; meaningful only if %WAKE_MAGICSECURE
    204  *	is set in @wolopts.
    205  */
    206 struct ethtool_wolinfo {
    207 	__u32	cmd;
    208 	__u32	supported;
    209 	__u32	wolopts;
    210 	__u8	sopass[SOPASS_MAX];
    211 };
    212 
    213 /* for passing single values */
    214 struct ethtool_value {
    215 	__u32	cmd;
    216 	__u32	data;
    217 };
    218 
    219 enum tunable_id {
    220 	ETHTOOL_ID_UNSPEC,
    221 	ETHTOOL_RX_COPYBREAK,
    222 	ETHTOOL_TX_COPYBREAK,
    223 	/*
    224 	 * Add your fresh new tubale attribute above and remember to update
    225 	 * tunable_strings[] in net/core/ethtool.c
    226 	 */
    227 	__ETHTOOL_TUNABLE_COUNT,
    228 };
    229 
    230 enum tunable_type_id {
    231 	ETHTOOL_TUNABLE_UNSPEC,
    232 	ETHTOOL_TUNABLE_U8,
    233 	ETHTOOL_TUNABLE_U16,
    234 	ETHTOOL_TUNABLE_U32,
    235 	ETHTOOL_TUNABLE_U64,
    236 	ETHTOOL_TUNABLE_STRING,
    237 	ETHTOOL_TUNABLE_S8,
    238 	ETHTOOL_TUNABLE_S16,
    239 	ETHTOOL_TUNABLE_S32,
    240 	ETHTOOL_TUNABLE_S64,
    241 };
    242 
    243 struct ethtool_tunable {
    244 	__u32	cmd;
    245 	__u32	id;
    246 	__u32	type_id;
    247 	__u32	len;
    248 	void	*data[0];
    249 };
    250 
    251 #define DOWNSHIFT_DEV_DEFAULT_COUNT	0xff
    252 #define DOWNSHIFT_DEV_DISABLE		0
    253 
    254 enum phy_tunable_id {
    255 	ETHTOOL_PHY_ID_UNSPEC,
    256 	ETHTOOL_PHY_DOWNSHIFT,
    257 	/*
    258 	 * Add your fresh new phy tunable attribute above and remember to update
    259 	 * phy_tunable_strings[] in net/core/ethtool.c
    260 	 */
    261 	__ETHTOOL_PHY_TUNABLE_COUNT,
    262 };
    263 
    264 /**
    265  * struct ethtool_regs - hardware register dump
    266  * @cmd: Command number = %ETHTOOL_GREGS
    267  * @version: Dump format version.  This is driver-specific and may
    268  *	distinguish different chips/revisions.  Drivers must use new
    269  *	version numbers whenever the dump format changes in an
    270  *	incompatible way.
    271  * @len: On entry, the real length of @data.  On return, the number of
    272  *	bytes used.
    273  * @data: Buffer for the register dump
    274  *
    275  * Users should use %ETHTOOL_GDRVINFO to find the maximum length of
    276  * a register dump for the interface.  They must allocate the buffer
    277  * immediately following this structure.
    278  */
    279 struct ethtool_regs {
    280 	__u32	cmd;
    281 	__u32	version;
    282 	__u32	len;
    283 	__u8	data[0];
    284 };
    285 
    286 /**
    287  * struct ethtool_eeprom - EEPROM dump
    288  * @cmd: Command number = %ETHTOOL_GEEPROM, %ETHTOOL_GMODULEEEPROM or
    289  *	%ETHTOOL_SEEPROM
    290  * @magic: A 'magic cookie' value to guard against accidental changes.
    291  *	The value passed in to %ETHTOOL_SEEPROM must match the value
    292  *	returned by %ETHTOOL_GEEPROM for the same device.  This is
    293  *	unused when @cmd is %ETHTOOL_GMODULEEEPROM.
    294  * @offset: Offset within the EEPROM to begin reading/writing, in bytes
    295  * @len: On entry, number of bytes to read/write.  On successful
    296  *	return, number of bytes actually read/written.  In case of
    297  *	error, this may indicate at what point the error occurred.
    298  * @data: Buffer to read/write from
    299  *
    300  * Users may use %ETHTOOL_GDRVINFO or %ETHTOOL_GMODULEINFO to find
    301  * the length of an on-board or module EEPROM, respectively.  They
    302  * must allocate the buffer immediately following this structure.
    303  */
    304 struct ethtool_eeprom {
    305 	__u32	cmd;
    306 	__u32	magic;
    307 	__u32	offset;
    308 	__u32	len;
    309 	__u8	data[0];
    310 };
    311 
    312 /**
    313  * struct ethtool_eee - Energy Efficient Ethernet information
    314  * @cmd: ETHTOOL_{G,S}EEE
    315  * @supported: Mask of %SUPPORTED_* flags for the speed/duplex combinations
    316  *	for which there is EEE support.
    317  * @advertised: Mask of %ADVERTISED_* flags for the speed/duplex combinations
    318  *	advertised as eee capable.
    319  * @lp_advertised: Mask of %ADVERTISED_* flags for the speed/duplex
    320  *	combinations advertised by the link partner as eee capable.
    321  * @eee_active: Result of the eee auto negotiation.
    322  * @eee_enabled: EEE configured mode (enabled/disabled).
    323  * @tx_lpi_enabled: Whether the interface should assert its tx lpi, given
    324  *	that eee was negotiated.
    325  * @tx_lpi_timer: Time in microseconds the interface delays prior to asserting
    326  *	its tx lpi (after reaching 'idle' state). Effective only when eee
    327  *	was negotiated and tx_lpi_enabled was set.
    328  */
    329 struct ethtool_eee {
    330 	__u32	cmd;
    331 	__u32	supported;
    332 	__u32	advertised;
    333 	__u32	lp_advertised;
    334 	__u32	eee_active;
    335 	__u32	eee_enabled;
    336 	__u32	tx_lpi_enabled;
    337 	__u32	tx_lpi_timer;
    338 	__u32	reserved[2];
    339 };
    340 
    341 /**
    342  * struct ethtool_modinfo - plugin module eeprom information
    343  * @cmd: %ETHTOOL_GMODULEINFO
    344  * @type: Standard the module information conforms to %ETH_MODULE_SFF_xxxx
    345  * @eeprom_len: Length of the eeprom
    346  *
    347  * This structure is used to return the information to
    348  * properly size memory for a subsequent call to %ETHTOOL_GMODULEEEPROM.
    349  * The type code indicates the eeprom data format
    350  */
    351 struct ethtool_modinfo {
    352 	__u32   cmd;
    353 	__u32   type;
    354 	__u32   eeprom_len;
    355 	__u32   reserved[8];
    356 };
    357 
    358 /**
    359  * struct ethtool_coalesce - coalescing parameters for IRQs and stats updates
    360  * @cmd: ETHTOOL_{G,S}COALESCE
    361  * @rx_coalesce_usecs: How many usecs to delay an RX interrupt after
    362  *	a packet arrives.
    363  * @rx_max_coalesced_frames: Maximum number of packets to receive
    364  *	before an RX interrupt.
    365  * @rx_coalesce_usecs_irq: Same as @rx_coalesce_usecs, except that
    366  *	this value applies while an IRQ is being serviced by the host.
    367  * @rx_max_coalesced_frames_irq: Same as @rx_max_coalesced_frames,
    368  *	except that this value applies while an IRQ is being serviced
    369  *	by the host.
    370  * @tx_coalesce_usecs: How many usecs to delay a TX interrupt after
    371  *	a packet is sent.
    372  * @tx_max_coalesced_frames: Maximum number of packets to be sent
    373  *	before a TX interrupt.
    374  * @tx_coalesce_usecs_irq: Same as @tx_coalesce_usecs, except that
    375  *	this value applies while an IRQ is being serviced by the host.
    376  * @tx_max_coalesced_frames_irq: Same as @tx_max_coalesced_frames,
    377  *	except that this value applies while an IRQ is being serviced
    378  *	by the host.
    379  * @stats_block_coalesce_usecs: How many usecs to delay in-memory
    380  *	statistics block updates.  Some drivers do not have an
    381  *	in-memory statistic block, and in such cases this value is
    382  *	ignored.  This value must not be zero.
    383  * @use_adaptive_rx_coalesce: Enable adaptive RX coalescing.
    384  * @use_adaptive_tx_coalesce: Enable adaptive TX coalescing.
    385  * @pkt_rate_low: Threshold for low packet rate (packets per second).
    386  * @rx_coalesce_usecs_low: How many usecs to delay an RX interrupt after
    387  *	a packet arrives, when the packet rate is below @pkt_rate_low.
    388  * @rx_max_coalesced_frames_low: Maximum number of packets to be received
    389  *	before an RX interrupt, when the packet rate is below @pkt_rate_low.
    390  * @tx_coalesce_usecs_low: How many usecs to delay a TX interrupt after
    391  *	a packet is sent, when the packet rate is below @pkt_rate_low.
    392  * @tx_max_coalesced_frames_low: Maximum nuumber of packets to be sent before
    393  *	a TX interrupt, when the packet rate is below @pkt_rate_low.
    394  * @pkt_rate_high: Threshold for high packet rate (packets per second).
    395  * @rx_coalesce_usecs_high: How many usecs to delay an RX interrupt after
    396  *	a packet arrives, when the packet rate is above @pkt_rate_high.
    397  * @rx_max_coalesced_frames_high: Maximum number of packets to be received
    398  *	before an RX interrupt, when the packet rate is above @pkt_rate_high.
    399  * @tx_coalesce_usecs_high: How many usecs to delay a TX interrupt after
    400  *	a packet is sent, when the packet rate is above @pkt_rate_high.
    401  * @tx_max_coalesced_frames_high: Maximum number of packets to be sent before
    402  *	a TX interrupt, when the packet rate is above @pkt_rate_high.
    403  * @rate_sample_interval: How often to do adaptive coalescing packet rate
    404  *	sampling, measured in seconds.  Must not be zero.
    405  *
    406  * Each pair of (usecs, max_frames) fields specifies that interrupts
    407  * should be coalesced until
    408  *	(usecs > 0 && time_since_first_completion >= usecs) ||
    409  *	(max_frames > 0 && completed_frames >= max_frames)
    410  *
    411  * It is illegal to set both usecs and max_frames to zero as this
    412  * would cause interrupts to never be generated.  To disable
    413  * coalescing, set usecs = 0 and max_frames = 1.
    414  *
    415  * Some implementations ignore the value of max_frames and use the
    416  * condition time_since_first_completion >= usecs
    417  *
    418  * This is deprecated.  Drivers for hardware that does not support
    419  * counting completions should validate that max_frames == !rx_usecs.
    420  *
    421  * Adaptive RX/TX coalescing is an algorithm implemented by some
    422  * drivers to improve latency under low packet rates and improve
    423  * throughput under high packet rates.  Some drivers only implement
    424  * one of RX or TX adaptive coalescing.  Anything not implemented by
    425  * the driver causes these values to be silently ignored.
    426  *
    427  * When the packet rate is below @pkt_rate_high but above
    428  * @pkt_rate_low (both measured in packets per second) the
    429  * normal {rx,tx}_* coalescing parameters are used.
    430  */
    431 struct ethtool_coalesce {
    432 	__u32	cmd;
    433 	__u32	rx_coalesce_usecs;
    434 	__u32	rx_max_coalesced_frames;
    435 	__u32	rx_coalesce_usecs_irq;
    436 	__u32	rx_max_coalesced_frames_irq;
    437 	__u32	tx_coalesce_usecs;
    438 	__u32	tx_max_coalesced_frames;
    439 	__u32	tx_coalesce_usecs_irq;
    440 	__u32	tx_max_coalesced_frames_irq;
    441 	__u32	stats_block_coalesce_usecs;
    442 	__u32	use_adaptive_rx_coalesce;
    443 	__u32	use_adaptive_tx_coalesce;
    444 	__u32	pkt_rate_low;
    445 	__u32	rx_coalesce_usecs_low;
    446 	__u32	rx_max_coalesced_frames_low;
    447 	__u32	tx_coalesce_usecs_low;
    448 	__u32	tx_max_coalesced_frames_low;
    449 	__u32	pkt_rate_high;
    450 	__u32	rx_coalesce_usecs_high;
    451 	__u32	rx_max_coalesced_frames_high;
    452 	__u32	tx_coalesce_usecs_high;
    453 	__u32	tx_max_coalesced_frames_high;
    454 	__u32	rate_sample_interval;
    455 };
    456 
    457 /**
    458  * struct ethtool_ringparam - RX/TX ring parameters
    459  * @cmd: Command number = %ETHTOOL_GRINGPARAM or %ETHTOOL_SRINGPARAM
    460  * @rx_max_pending: Maximum supported number of pending entries per
    461  *	RX ring.  Read-only.
    462  * @rx_mini_max_pending: Maximum supported number of pending entries
    463  *	per RX mini ring.  Read-only.
    464  * @rx_jumbo_max_pending: Maximum supported number of pending entries
    465  *	per RX jumbo ring.  Read-only.
    466  * @tx_max_pending: Maximum supported number of pending entries per
    467  *	TX ring.  Read-only.
    468  * @rx_pending: Current maximum number of pending entries per RX ring
    469  * @rx_mini_pending: Current maximum number of pending entries per RX
    470  *	mini ring
    471  * @rx_jumbo_pending: Current maximum number of pending entries per RX
    472  *	jumbo ring
    473  * @tx_pending: Current maximum supported number of pending entries
    474  *	per TX ring
    475  *
    476  * If the interface does not have separate RX mini and/or jumbo rings,
    477  * @rx_mini_max_pending and/or @rx_jumbo_max_pending will be 0.
    478  *
    479  * There may also be driver-dependent minimum values for the number
    480  * of entries per ring.
    481  */
    482 struct ethtool_ringparam {
    483 	__u32	cmd;
    484 	__u32	rx_max_pending;
    485 	__u32	rx_mini_max_pending;
    486 	__u32	rx_jumbo_max_pending;
    487 	__u32	tx_max_pending;
    488 	__u32	rx_pending;
    489 	__u32	rx_mini_pending;
    490 	__u32	rx_jumbo_pending;
    491 	__u32	tx_pending;
    492 };
    493 
    494 /**
    495  * struct ethtool_channels - configuring number of network channel
    496  * @cmd: ETHTOOL_{G,S}CHANNELS
    497  * @max_rx: Read only. Maximum number of receive channel the driver support.
    498  * @max_tx: Read only. Maximum number of transmit channel the driver support.
    499  * @max_other: Read only. Maximum number of other channel the driver support.
    500  * @max_combined: Read only. Maximum number of combined channel the driver
    501  *	support. Set of queues RX, TX or other.
    502  * @rx_count: Valid values are in the range 1 to the max_rx.
    503  * @tx_count: Valid values are in the range 1 to the max_tx.
    504  * @other_count: Valid values are in the range 1 to the max_other.
    505  * @combined_count: Valid values are in the range 1 to the max_combined.
    506  *
    507  * This can be used to configure RX, TX and other channels.
    508  */
    509 
    510 struct ethtool_channels {
    511 	__u32	cmd;
    512 	__u32	max_rx;
    513 	__u32	max_tx;
    514 	__u32	max_other;
    515 	__u32	max_combined;
    516 	__u32	rx_count;
    517 	__u32	tx_count;
    518 	__u32	other_count;
    519 	__u32	combined_count;
    520 };
    521 
    522 /**
    523  * struct ethtool_pauseparam - Ethernet pause (flow control) parameters
    524  * @cmd: Command number = %ETHTOOL_GPAUSEPARAM or %ETHTOOL_SPAUSEPARAM
    525  * @autoneg: Flag to enable autonegotiation of pause frame use
    526  * @rx_pause: Flag to enable reception of pause frames
    527  * @tx_pause: Flag to enable transmission of pause frames
    528  *
    529  * Drivers should reject a non-zero setting of @autoneg when
    530  * autoneogotiation is disabled (or not supported) for the link.
    531  *
    532  * If the link is autonegotiated, drivers should use
    533  * mii_advertise_flowctrl() or similar code to set the advertised
    534  * pause frame capabilities based on the @rx_pause and @tx_pause flags,
    535  * even if @autoneg is zero.  They should also allow the advertised
    536  * pause frame capabilities to be controlled directly through the
    537  * advertising field of &struct ethtool_cmd.
    538  *
    539  * If @autoneg is non-zero, the MAC is configured to send and/or
    540  * receive pause frames according to the result of autonegotiation.
    541  * Otherwise, it is configured directly based on the @rx_pause and
    542  * @tx_pause flags.
    543  */
    544 struct ethtool_pauseparam {
    545 	__u32	cmd;
    546 	__u32	autoneg;
    547 	__u32	rx_pause;
    548 	__u32	tx_pause;
    549 };
    550 
    551 #define ETH_GSTRING_LEN		32
    552 
    553 /**
    554  * enum ethtool_stringset - string set ID
    555  * @ETH_SS_TEST: Self-test result names, for use with %ETHTOOL_TEST
    556  * @ETH_SS_STATS: Statistic names, for use with %ETHTOOL_GSTATS
    557  * @ETH_SS_PRIV_FLAGS: Driver private flag names, for use with
    558  *	%ETHTOOL_GPFLAGS and %ETHTOOL_SPFLAGS
    559  * @ETH_SS_NTUPLE_FILTERS: Previously used with %ETHTOOL_GRXNTUPLE;
    560  *	now deprecated
    561  * @ETH_SS_FEATURES: Device feature names
    562  * @ETH_SS_RSS_HASH_FUNCS: RSS hush function names
    563  * @ETH_SS_PHY_STATS: Statistic names, for use with %ETHTOOL_GPHYSTATS
    564  * @ETH_SS_PHY_TUNABLES: PHY tunable names
    565  */
    566 enum ethtool_stringset {
    567 	ETH_SS_TEST		= 0,
    568 	ETH_SS_STATS,
    569 	ETH_SS_PRIV_FLAGS,
    570 	ETH_SS_NTUPLE_FILTERS,
    571 	ETH_SS_FEATURES,
    572 	ETH_SS_RSS_HASH_FUNCS,
    573 	ETH_SS_TUNABLES,
    574 	ETH_SS_PHY_STATS,
    575 	ETH_SS_PHY_TUNABLES,
    576 };
    577 
    578 /**
    579  * struct ethtool_gstrings - string set for data tagging
    580  * @cmd: Command number = %ETHTOOL_GSTRINGS
    581  * @string_set: String set ID; one of &enum ethtool_stringset
    582  * @len: On return, the number of strings in the string set
    583  * @data: Buffer for strings.  Each string is null-padded to a size of
    584  *	%ETH_GSTRING_LEN.
    585  *
    586  * Users must use %ETHTOOL_GSSET_INFO to find the number of strings in
    587  * the string set.  They must allocate a buffer of the appropriate
    588  * size immediately following this structure.
    589  */
    590 struct ethtool_gstrings {
    591 	__u32	cmd;
    592 	__u32	string_set;
    593 	__u32	len;
    594 	__u8	data[0];
    595 };
    596 
    597 /**
    598  * struct ethtool_sset_info - string set information
    599  * @cmd: Command number = %ETHTOOL_GSSET_INFO
    600  * @sset_mask: On entry, a bitmask of string sets to query, with bits
    601  *	numbered according to &enum ethtool_stringset.  On return, a
    602  *	bitmask of those string sets queried that are supported.
    603  * @data: Buffer for string set sizes.  On return, this contains the
    604  *	size of each string set that was queried and supported, in
    605  *	order of ID.
    606  *
    607  * Example: The user passes in @sset_mask = 0x7 (sets 0, 1, 2) and on
    608  * return @sset_mask == 0x6 (sets 1, 2).  Then @data[0] contains the
    609  * size of set 1 and @data[1] contains the size of set 2.
    610  *
    611  * Users must allocate a buffer of the appropriate size (4 * number of
    612  * sets queried) immediately following this structure.
    613  */
    614 struct ethtool_sset_info {
    615 	__u32	cmd;
    616 	__u32	reserved;
    617 	__u64	sset_mask;
    618 	__u32	data[0];
    619 };
    620 
    621 /**
    622  * enum ethtool_test_flags - flags definition of ethtool_test
    623  * @ETH_TEST_FL_OFFLINE: if set perform online and offline tests, otherwise
    624  *	only online tests.
    625  * @ETH_TEST_FL_FAILED: Driver set this flag if test fails.
    626  * @ETH_TEST_FL_EXTERNAL_LB: Application request to perform external loopback
    627  *	test.
    628  * @ETH_TEST_FL_EXTERNAL_LB_DONE: Driver performed the external loopback test
    629  */
    630 
    631 enum ethtool_test_flags {
    632 	ETH_TEST_FL_OFFLINE	= (1 << 0),
    633 	ETH_TEST_FL_FAILED	= (1 << 1),
    634 	ETH_TEST_FL_EXTERNAL_LB	= (1 << 2),
    635 	ETH_TEST_FL_EXTERNAL_LB_DONE	= (1 << 3),
    636 };
    637 
    638 /**
    639  * struct ethtool_test - device self-test invocation
    640  * @cmd: Command number = %ETHTOOL_TEST
    641  * @flags: A bitmask of flags from &enum ethtool_test_flags.  Some
    642  *	flags may be set by the user on entry; others may be set by
    643  *	the driver on return.
    644  * @len: On return, the number of test results
    645  * @data: Array of test results
    646  *
    647  * Users must use %ETHTOOL_GSSET_INFO or %ETHTOOL_GDRVINFO to find the
    648  * number of test results that will be returned.  They must allocate a
    649  * buffer of the appropriate size (8 * number of results) immediately
    650  * following this structure.
    651  */
    652 struct ethtool_test {
    653 	__u32	cmd;
    654 	__u32	flags;
    655 	__u32	reserved;
    656 	__u32	len;
    657 	__u64	data[0];
    658 };
    659 
    660 /**
    661  * struct ethtool_stats - device-specific statistics
    662  * @cmd: Command number = %ETHTOOL_GSTATS
    663  * @n_stats: On return, the number of statistics
    664  * @data: Array of statistics
    665  *
    666  * Users must use %ETHTOOL_GSSET_INFO or %ETHTOOL_GDRVINFO to find the
    667  * number of statistics that will be returned.  They must allocate a
    668  * buffer of the appropriate size (8 * number of statistics)
    669  * immediately following this structure.
    670  */
    671 struct ethtool_stats {
    672 	__u32	cmd;
    673 	__u32	n_stats;
    674 	__u64	data[0];
    675 };
    676 
    677 /**
    678  * struct ethtool_perm_addr - permanent hardware address
    679  * @cmd: Command number = %ETHTOOL_GPERMADDR
    680  * @size: On entry, the size of the buffer.  On return, the size of the
    681  *	address.  The command fails if the buffer is too small.
    682  * @data: Buffer for the address
    683  *
    684  * Users must allocate the buffer immediately following this structure.
    685  * A buffer size of %MAX_ADDR_LEN should be sufficient for any address
    686  * type.
    687  */
    688 struct ethtool_perm_addr {
    689 	__u32	cmd;
    690 	__u32	size;
    691 	__u8	data[0];
    692 };
    693 
    694 /* boolean flags controlling per-interface behavior characteristics.
    695  * When reading, the flag indicates whether or not a certain behavior
    696  * is enabled/present.  When writing, the flag indicates whether
    697  * or not the driver should turn on (set) or off (clear) a behavior.
    698  *
    699  * Some behaviors may read-only (unconditionally absent or present).
    700  * If such is the case, return EINVAL in the set-flags operation if the
    701  * flag differs from the read-only value.
    702  */
    703 enum ethtool_flags {
    704 	ETH_FLAG_TXVLAN		= (1 << 7),	/* TX VLAN offload enabled */
    705 	ETH_FLAG_RXVLAN		= (1 << 8),	/* RX VLAN offload enabled */
    706 	ETH_FLAG_LRO		= (1 << 15),	/* LRO is enabled */
    707 	ETH_FLAG_NTUPLE		= (1 << 27),	/* N-tuple filters enabled */
    708 	ETH_FLAG_RXHASH		= (1 << 28),
    709 };
    710 
    711 /* The following structures are for supporting RX network flow
    712  * classification and RX n-tuple configuration. Note, all multibyte
    713  * fields, e.g., ip4src, ip4dst, psrc, pdst, spi, etc. are expected to
    714  * be in network byte order.
    715  */
    716 
    717 /**
    718  * struct ethtool_tcpip4_spec - flow specification for TCP/IPv4 etc.
    719  * @ip4src: Source host
    720  * @ip4dst: Destination host
    721  * @psrc: Source port
    722  * @pdst: Destination port
    723  * @tos: Type-of-service
    724  *
    725  * This can be used to specify a TCP/IPv4, UDP/IPv4 or SCTP/IPv4 flow.
    726  */
    727 struct ethtool_tcpip4_spec {
    728 	__be32	ip4src;
    729 	__be32	ip4dst;
    730 	__be16	psrc;
    731 	__be16	pdst;
    732 	__u8    tos;
    733 };
    734 
    735 /**
    736  * struct ethtool_ah_espip4_spec - flow specification for IPsec/IPv4
    737  * @ip4src: Source host
    738  * @ip4dst: Destination host
    739  * @spi: Security parameters index
    740  * @tos: Type-of-service
    741  *
    742  * This can be used to specify an IPsec transport or tunnel over IPv4.
    743  */
    744 struct ethtool_ah_espip4_spec {
    745 	__be32	ip4src;
    746 	__be32	ip4dst;
    747 	__be32	spi;
    748 	__u8    tos;
    749 };
    750 
    751 #define	ETH_RX_NFC_IP4	1
    752 
    753 /**
    754  * struct ethtool_usrip4_spec - general flow specification for IPv4
    755  * @ip4src: Source host
    756  * @ip4dst: Destination host
    757  * @l4_4_bytes: First 4 bytes of transport (layer 4) header
    758  * @tos: Type-of-service
    759  * @ip_ver: Value must be %ETH_RX_NFC_IP4; mask must be 0
    760  * @proto: Transport protocol number; mask must be 0
    761  */
    762 struct ethtool_usrip4_spec {
    763 	__be32	ip4src;
    764 	__be32	ip4dst;
    765 	__be32	l4_4_bytes;
    766 	__u8    tos;
    767 	__u8    ip_ver;
    768 	__u8    proto;
    769 };
    770 
    771 /**
    772  * struct ethtool_tcpip6_spec - flow specification for TCP/IPv6 etc.
    773  * @ip6src: Source host
    774  * @ip6dst: Destination host
    775  * @psrc: Source port
    776  * @pdst: Destination port
    777  * @tclass: Traffic Class
    778  *
    779  * This can be used to specify a TCP/IPv6, UDP/IPv6 or SCTP/IPv6 flow.
    780  */
    781 struct ethtool_tcpip6_spec {
    782 	__be32	ip6src[4];
    783 	__be32	ip6dst[4];
    784 	__be16	psrc;
    785 	__be16	pdst;
    786 	__u8    tclass;
    787 };
    788 
    789 /**
    790  * struct ethtool_ah_espip6_spec - flow specification for IPsec/IPv6
    791  * @ip6src: Source host
    792  * @ip6dst: Destination host
    793  * @spi: Security parameters index
    794  * @tclass: Traffic Class
    795  *
    796  * This can be used to specify an IPsec transport or tunnel over IPv6.
    797  */
    798 struct ethtool_ah_espip6_spec {
    799 	__be32	ip6src[4];
    800 	__be32	ip6dst[4];
    801 	__be32	spi;
    802 	__u8    tclass;
    803 };
    804 
    805 /**
    806  * struct ethtool_usrip6_spec - general flow specification for IPv6
    807  * @ip6src: Source host
    808  * @ip6dst: Destination host
    809  * @l4_4_bytes: First 4 bytes of transport (layer 4) header
    810  * @tclass: Traffic Class
    811  * @l4_proto: Transport protocol number (nexthdr after any Extension Headers)
    812  */
    813 struct ethtool_usrip6_spec {
    814 	__be32	ip6src[4];
    815 	__be32	ip6dst[4];
    816 	__be32	l4_4_bytes;
    817 	__u8    tclass;
    818 	__u8    l4_proto;
    819 };
    820 
    821 union ethtool_flow_union {
    822 	struct ethtool_tcpip4_spec		tcp_ip4_spec;
    823 	struct ethtool_tcpip4_spec		udp_ip4_spec;
    824 	struct ethtool_tcpip4_spec		sctp_ip4_spec;
    825 	struct ethtool_ah_espip4_spec		ah_ip4_spec;
    826 	struct ethtool_ah_espip4_spec		esp_ip4_spec;
    827 	struct ethtool_usrip4_spec		usr_ip4_spec;
    828 	struct ethtool_tcpip6_spec		tcp_ip6_spec;
    829 	struct ethtool_tcpip6_spec		udp_ip6_spec;
    830 	struct ethtool_tcpip6_spec		sctp_ip6_spec;
    831 	struct ethtool_ah_espip6_spec		ah_ip6_spec;
    832 	struct ethtool_ah_espip6_spec		esp_ip6_spec;
    833 	struct ethtool_usrip6_spec		usr_ip6_spec;
    834 	struct ethhdr				ether_spec;
    835 	__u8					hdata[52];
    836 };
    837 
    838 /**
    839  * struct ethtool_flow_ext - additional RX flow fields
    840  * @h_dest: destination MAC address
    841  * @vlan_etype: VLAN EtherType
    842  * @vlan_tci: VLAN tag control information
    843  * @data: user defined data
    844  *
    845  * Note, @vlan_etype, @vlan_tci, and @data are only valid if %FLOW_EXT
    846  * is set in &struct ethtool_rx_flow_spec @flow_type.
    847  * @h_dest is valid if %FLOW_MAC_EXT is set.
    848  */
    849 struct ethtool_flow_ext {
    850 	__u8		padding[2];
    851 	unsigned char	h_dest[ETH_ALEN];
    852 	__be16		vlan_etype;
    853 	__be16		vlan_tci;
    854 	__be32		data[2];
    855 };
    856 
    857 /**
    858  * struct ethtool_rx_flow_spec - classification rule for RX flows
    859  * @flow_type: Type of match to perform, e.g. %TCP_V4_FLOW
    860  * @h_u: Flow fields to match (dependent on @flow_type)
    861  * @h_ext: Additional fields to match
    862  * @m_u: Masks for flow field bits to be matched
    863  * @m_ext: Masks for additional field bits to be matched
    864  *	Note, all additional fields must be ignored unless @flow_type
    865  *	includes the %FLOW_EXT or %FLOW_MAC_EXT flag
    866  *	(see &struct ethtool_flow_ext description).
    867  * @ring_cookie: RX ring/queue index to deliver to, or %RX_CLS_FLOW_DISC
    868  *	if packets should be discarded
    869  * @location: Location of rule in the table.  Locations must be
    870  *	numbered such that a flow matching multiple rules will be
    871  *	classified according to the first (lowest numbered) rule.
    872  */
    873 struct ethtool_rx_flow_spec {
    874 	__u32		flow_type;
    875 	union ethtool_flow_union h_u;
    876 	struct ethtool_flow_ext h_ext;
    877 	union ethtool_flow_union m_u;
    878 	struct ethtool_flow_ext m_ext;
    879 	__u64		ring_cookie;
    880 	__u32		location;
    881 };
    882 
    883 /* How rings are layed out when accessing virtual functions or
    884  * offloaded queues is device specific. To allow users to do flow
    885  * steering and specify these queues the ring cookie is partitioned
    886  * into a 32bit queue index with an 8 bit virtual function id.
    887  * This also leaves the 3bytes for further specifiers. It is possible
    888  * future devices may support more than 256 virtual functions if
    889  * devices start supporting PCIe w/ARI. However at the moment I
    890  * do not know of any devices that support this so I do not reserve
    891  * space for this at this time. If a future patch consumes the next
    892  * byte it should be aware of this possiblity.
    893  */
    894 #define ETHTOOL_RX_FLOW_SPEC_RING	0x00000000FFFFFFFFLL
    895 #define ETHTOOL_RX_FLOW_SPEC_RING_VF	0x000000FF00000000LL
    896 #define ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF 32
    897 static inline __u64 ethtool_get_flow_spec_ring(__u64 ring_cookie)
    898 {
    899 	return ETHTOOL_RX_FLOW_SPEC_RING & ring_cookie;
    900 };
    901 
    902 static inline __u64 ethtool_get_flow_spec_ring_vf(__u64 ring_cookie)
    903 {
    904 	return (ETHTOOL_RX_FLOW_SPEC_RING_VF & ring_cookie) >>
    905 				ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
    906 };
    907 
    908 /**
    909  * struct ethtool_rxnfc - command to get or set RX flow classification rules
    910  * @cmd: Specific command number - %ETHTOOL_GRXFH, %ETHTOOL_SRXFH,
    911  *	%ETHTOOL_GRXRINGS, %ETHTOOL_GRXCLSRLCNT, %ETHTOOL_GRXCLSRULE,
    912  *	%ETHTOOL_GRXCLSRLALL, %ETHTOOL_SRXCLSRLDEL or %ETHTOOL_SRXCLSRLINS
    913  * @flow_type: Type of flow to be affected, e.g. %TCP_V4_FLOW
    914  * @data: Command-dependent value
    915  * @fs: Flow classification rule
    916  * @rule_cnt: Number of rules to be affected
    917  * @rule_locs: Array of used rule locations
    918  *
    919  * For %ETHTOOL_GRXFH and %ETHTOOL_SRXFH, @data is a bitmask indicating
    920  * the fields included in the flow hash, e.g. %RXH_IP_SRC.  The following
    921  * structure fields must not be used.
    922  *
    923  * For %ETHTOOL_GRXRINGS, @data is set to the number of RX rings/queues
    924  * on return.
    925  *
    926  * For %ETHTOOL_GRXCLSRLCNT, @rule_cnt is set to the number of defined
    927  * rules on return.  If @data is non-zero on return then it is the
    928  * size of the rule table, plus the flag %RX_CLS_LOC_SPECIAL if the
    929  * driver supports any special location values.  If that flag is not
    930  * set in @data then special location values should not be used.
    931  *
    932  * For %ETHTOOL_GRXCLSRULE, @fs.@location specifies the location of an
    933  * existing rule on entry and @fs contains the rule on return.
    934  *
    935  * For %ETHTOOL_GRXCLSRLALL, @rule_cnt specifies the array size of the
    936  * user buffer for @rule_locs on entry.  On return, @data is the size
    937  * of the rule table, @rule_cnt is the number of defined rules, and
    938  * @rule_locs contains the locations of the defined rules.  Drivers
    939  * must use the second parameter to get_rxnfc() instead of @rule_locs.
    940  *
    941  * For %ETHTOOL_SRXCLSRLINS, @fs specifies the rule to add or update.
    942  * @fs.@location either specifies the location to use or is a special
    943  * location value with %RX_CLS_LOC_SPECIAL flag set.  On return,
    944  * @fs.@location is the actual rule location.
    945  *
    946  * For %ETHTOOL_SRXCLSRLDEL, @fs.@location specifies the location of an
    947  * existing rule on entry.
    948  *
    949  * A driver supporting the special location values for
    950  * %ETHTOOL_SRXCLSRLINS may add the rule at any suitable unused
    951  * location, and may remove a rule at a later location (lower
    952  * priority) that matches exactly the same set of flows.  The special
    953  * values are %RX_CLS_LOC_ANY, selecting any location;
    954  * %RX_CLS_LOC_FIRST, selecting the first suitable location (maximum
    955  * priority); and %RX_CLS_LOC_LAST, selecting the last suitable
    956  * location (minimum priority).  Additional special values may be
    957  * defined in future and drivers must return -%EINVAL for any
    958  * unrecognised value.
    959  */
    960 struct ethtool_rxnfc {
    961 	__u32				cmd;
    962 	__u32				flow_type;
    963 	__u64				data;
    964 	struct ethtool_rx_flow_spec	fs;
    965 	__u32				rule_cnt;
    966 	__u32				rule_locs[0];
    967 };
    968 
    969 
    970 /**
    971  * struct ethtool_rxfh_indir - command to get or set RX flow hash indirection
    972  * @cmd: Specific command number - %ETHTOOL_GRXFHINDIR or %ETHTOOL_SRXFHINDIR
    973  * @size: On entry, the array size of the user buffer, which may be zero.
    974  *	On return from %ETHTOOL_GRXFHINDIR, the array size of the hardware
    975  *	indirection table.
    976  * @ring_index: RX ring/queue index for each hash value
    977  *
    978  * For %ETHTOOL_GRXFHINDIR, a @size of zero means that only the size
    979  * should be returned.  For %ETHTOOL_SRXFHINDIR, a @size of zero means
    980  * the table should be reset to default values.  This last feature
    981  * is not supported by the original implementations.
    982  */
    983 struct ethtool_rxfh_indir {
    984 	__u32	cmd;
    985 	__u32	size;
    986 	__u32	ring_index[0];
    987 };
    988 
    989 /**
    990  * struct ethtool_rxfh - command to get/set RX flow hash indir or/and hash key.
    991  * @cmd: Specific command number - %ETHTOOL_GRSSH or %ETHTOOL_SRSSH
    992  * @rss_context: RSS context identifier.
    993  * @indir_size: On entry, the array size of the user buffer for the
    994  *	indirection table, which may be zero, or (for %ETHTOOL_SRSSH),
    995  *	%ETH_RXFH_INDIR_NO_CHANGE.  On return from %ETHTOOL_GRSSH,
    996  *	the array size of the hardware indirection table.
    997  * @key_size: On entry, the array size of the user buffer for the hash key,
    998  *	which may be zero.  On return from %ETHTOOL_GRSSH, the size of the
    999  *	hardware hash key.
   1000  * @hfunc: Defines the current RSS hash function used by HW (or to be set to).
   1001  *	Valid values are one of the %ETH_RSS_HASH_*.
   1002  * @rsvd:	Reserved for future extensions.
   1003  * @rss_config: RX ring/queue index for each hash value i.e., indirection table
   1004  *	of @indir_size __u32 elements, followed by hash key of @key_size
   1005  *	bytes.
   1006  *
   1007  * For %ETHTOOL_GRSSH, a @indir_size and key_size of zero means that only the
   1008  * size should be returned.  For %ETHTOOL_SRSSH, an @indir_size of
   1009  * %ETH_RXFH_INDIR_NO_CHANGE means that indir table setting is not requested
   1010  * and a @indir_size of zero means the indir table should be reset to default
   1011  * values. An hfunc of zero means that hash function setting is not requested.
   1012  */
   1013 struct ethtool_rxfh {
   1014 	__u32   cmd;
   1015 	__u32	rss_context;
   1016 	__u32   indir_size;
   1017 	__u32   key_size;
   1018 	__u8	hfunc;
   1019 	__u8	rsvd8[3];
   1020 	__u32	rsvd32;
   1021 	__u32   rss_config[0];
   1022 };
   1023 #define ETH_RXFH_INDIR_NO_CHANGE	0xffffffff
   1024 
   1025 /**
   1026  * struct ethtool_rx_ntuple_flow_spec - specification for RX flow filter
   1027  * @flow_type: Type of match to perform, e.g. %TCP_V4_FLOW
   1028  * @h_u: Flow field values to match (dependent on @flow_type)
   1029  * @m_u: Masks for flow field value bits to be ignored
   1030  * @vlan_tag: VLAN tag to match
   1031  * @vlan_tag_mask: Mask for VLAN tag bits to be ignored
   1032  * @data: Driver-dependent data to match
   1033  * @data_mask: Mask for driver-dependent data bits to be ignored
   1034  * @action: RX ring/queue index to deliver to (non-negative) or other action
   1035  *	(negative, e.g. %ETHTOOL_RXNTUPLE_ACTION_DROP)
   1036  *
   1037  * For flow types %TCP_V4_FLOW, %UDP_V4_FLOW and %SCTP_V4_FLOW, where
   1038  * a field value and mask are both zero this is treated as if all mask
   1039  * bits are set i.e. the field is ignored.
   1040  */
   1041 struct ethtool_rx_ntuple_flow_spec {
   1042 	__u32		 flow_type;
   1043 	union {
   1044 		struct ethtool_tcpip4_spec		tcp_ip4_spec;
   1045 		struct ethtool_tcpip4_spec		udp_ip4_spec;
   1046 		struct ethtool_tcpip4_spec		sctp_ip4_spec;
   1047 		struct ethtool_ah_espip4_spec		ah_ip4_spec;
   1048 		struct ethtool_ah_espip4_spec		esp_ip4_spec;
   1049 		struct ethtool_usrip4_spec		usr_ip4_spec;
   1050 		struct ethhdr				ether_spec;
   1051 		__u8					hdata[72];
   1052 	} h_u, m_u;
   1053 
   1054 	__u16	        vlan_tag;
   1055 	__u16	        vlan_tag_mask;
   1056 	__u64		data;
   1057 	__u64		data_mask;
   1058 
   1059 	__s32		action;
   1060 #define ETHTOOL_RXNTUPLE_ACTION_DROP	(-1)	/* drop packet */
   1061 #define ETHTOOL_RXNTUPLE_ACTION_CLEAR	(-2)	/* clear filter */
   1062 };
   1063 
   1064 /**
   1065  * struct ethtool_rx_ntuple - command to set or clear RX flow filter
   1066  * @cmd: Command number - %ETHTOOL_SRXNTUPLE
   1067  * @fs: Flow filter specification
   1068  */
   1069 struct ethtool_rx_ntuple {
   1070 	__u32					cmd;
   1071 	struct ethtool_rx_ntuple_flow_spec	fs;
   1072 };
   1073 
   1074 #define ETHTOOL_FLASH_MAX_FILENAME	128
   1075 enum ethtool_flash_op_type {
   1076 	ETHTOOL_FLASH_ALL_REGIONS	= 0,
   1077 };
   1078 
   1079 /* for passing firmware flashing related parameters */
   1080 struct ethtool_flash {
   1081 	__u32	cmd;
   1082 	__u32	region;
   1083 	char	data[ETHTOOL_FLASH_MAX_FILENAME];
   1084 };
   1085 
   1086 /**
   1087  * struct ethtool_dump - used for retrieving, setting device dump
   1088  * @cmd: Command number - %ETHTOOL_GET_DUMP_FLAG, %ETHTOOL_GET_DUMP_DATA, or
   1089  * 	%ETHTOOL_SET_DUMP
   1090  * @version: FW version of the dump, filled in by driver
   1091  * @flag: driver dependent flag for dump setting, filled in by driver during
   1092  *        get and filled in by ethtool for set operation.
   1093  *        flag must be initialized by macro ETH_FW_DUMP_DISABLE value when
   1094  *        firmware dump is disabled.
   1095  * @len: length of dump data, used as the length of the user buffer on entry to
   1096  * 	 %ETHTOOL_GET_DUMP_DATA and this is returned as dump length by driver
   1097  * 	 for %ETHTOOL_GET_DUMP_FLAG command
   1098  * @data: data collected for get dump data operation
   1099  */
   1100 struct ethtool_dump {
   1101 	__u32	cmd;
   1102 	__u32	version;
   1103 	__u32	flag;
   1104 	__u32	len;
   1105 	__u8	data[0];
   1106 };
   1107 
   1108 #define ETH_FW_DUMP_DISABLE 0
   1109 
   1110 /* for returning and changing feature sets */
   1111 
   1112 /**
   1113  * struct ethtool_get_features_block - block with state of 32 features
   1114  * @available: mask of changeable features
   1115  * @requested: mask of features requested to be enabled if possible
   1116  * @active: mask of currently enabled features
   1117  * @never_changed: mask of features not changeable for any device
   1118  */
   1119 struct ethtool_get_features_block {
   1120 	__u32	available;
   1121 	__u32	requested;
   1122 	__u32	active;
   1123 	__u32	never_changed;
   1124 };
   1125 
   1126 /**
   1127  * struct ethtool_gfeatures - command to get state of device's features
   1128  * @cmd: command number = %ETHTOOL_GFEATURES
   1129  * @size: On entry, the number of elements in the features[] array;
   1130  *	on return, the number of elements in features[] needed to hold
   1131  *	all features
   1132  * @features: state of features
   1133  */
   1134 struct ethtool_gfeatures {
   1135 	__u32	cmd;
   1136 	__u32	size;
   1137 	struct ethtool_get_features_block features[0];
   1138 };
   1139 
   1140 /**
   1141  * struct ethtool_set_features_block - block with request for 32 features
   1142  * @valid: mask of features to be changed
   1143  * @requested: values of features to be changed
   1144  */
   1145 struct ethtool_set_features_block {
   1146 	__u32	valid;
   1147 	__u32	requested;
   1148 };
   1149 
   1150 /**
   1151  * struct ethtool_sfeatures - command to request change in device's features
   1152  * @cmd: command number = %ETHTOOL_SFEATURES
   1153  * @size: array size of the features[] array
   1154  * @features: feature change masks
   1155  */
   1156 struct ethtool_sfeatures {
   1157 	__u32	cmd;
   1158 	__u32	size;
   1159 	struct ethtool_set_features_block features[0];
   1160 };
   1161 
   1162 /**
   1163  * struct ethtool_ts_info - holds a device's timestamping and PHC association
   1164  * @cmd: command number = %ETHTOOL_GET_TS_INFO
   1165  * @so_timestamping: bit mask of the sum of the supported SO_TIMESTAMPING flags
   1166  * @phc_index: device index of the associated PHC, or -1 if there is none
   1167  * @tx_types: bit mask of the supported hwtstamp_tx_types enumeration values
   1168  * @rx_filters: bit mask of the supported hwtstamp_rx_filters enumeration values
   1169  *
   1170  * The bits in the 'tx_types' and 'rx_filters' fields correspond to
   1171  * the 'hwtstamp_tx_types' and 'hwtstamp_rx_filters' enumeration values,
   1172  * respectively.  For example, if the device supports HWTSTAMP_TX_ON,
   1173  * then (1 << HWTSTAMP_TX_ON) in 'tx_types' will be set.
   1174  *
   1175  * Drivers should only report the filters they actually support without
   1176  * upscaling in the SIOCSHWTSTAMP ioctl. If the SIOCSHWSTAMP request for
   1177  * HWTSTAMP_FILTER_V1_SYNC is supported by HWTSTAMP_FILTER_V1_EVENT, then the
   1178  * driver should only report HWTSTAMP_FILTER_V1_EVENT in this op.
   1179  */
   1180 struct ethtool_ts_info {
   1181 	__u32	cmd;
   1182 	__u32	so_timestamping;
   1183 	__s32	phc_index;
   1184 	__u32	tx_types;
   1185 	__u32	tx_reserved[3];
   1186 	__u32	rx_filters;
   1187 	__u32	rx_reserved[3];
   1188 };
   1189 
   1190 /*
   1191  * %ETHTOOL_SFEATURES changes features present in features[].valid to the
   1192  * values of corresponding bits in features[].requested. Bits in .requested
   1193  * not set in .valid or not changeable are ignored.
   1194  *
   1195  * Returns %EINVAL when .valid contains undefined or never-changeable bits
   1196  * or size is not equal to required number of features words (32-bit blocks).
   1197  * Returns >= 0 if request was completed; bits set in the value mean:
   1198  *   %ETHTOOL_F_UNSUPPORTED - there were bits set in .valid that are not
   1199  *	changeable (not present in %ETHTOOL_GFEATURES' features[].available)
   1200  *	those bits were ignored.
   1201  *   %ETHTOOL_F_WISH - some or all changes requested were recorded but the
   1202  *      resulting state of bits masked by .valid is not equal to .requested.
   1203  *      Probably there are other device-specific constraints on some features
   1204  *      in the set. When %ETHTOOL_F_UNSUPPORTED is set, .valid is considered
   1205  *      here as though ignored bits were cleared.
   1206  *   %ETHTOOL_F_COMPAT - some or all changes requested were made by calling
   1207  *      compatibility functions. Requested offload state cannot be properly
   1208  *      managed by kernel.
   1209  *
   1210  * Meaning of bits in the masks are obtained by %ETHTOOL_GSSET_INFO (number of
   1211  * bits in the arrays - always multiple of 32) and %ETHTOOL_GSTRINGS commands
   1212  * for ETH_SS_FEATURES string set. First entry in the table corresponds to least
   1213  * significant bit in features[0] fields. Empty strings mark undefined features.
   1214  */
   1215 enum ethtool_sfeatures_retval_bits {
   1216 	ETHTOOL_F_UNSUPPORTED__BIT,
   1217 	ETHTOOL_F_WISH__BIT,
   1218 	ETHTOOL_F_COMPAT__BIT,
   1219 };
   1220 
   1221 #define ETHTOOL_F_UNSUPPORTED   (1 << ETHTOOL_F_UNSUPPORTED__BIT)
   1222 #define ETHTOOL_F_WISH          (1 << ETHTOOL_F_WISH__BIT)
   1223 #define ETHTOOL_F_COMPAT        (1 << ETHTOOL_F_COMPAT__BIT)
   1224 
   1225 #define MAX_NUM_QUEUE		4096
   1226 
   1227 /**
   1228  * struct ethtool_per_queue_op - apply sub command to the queues in mask.
   1229  * @cmd: ETHTOOL_PERQUEUE
   1230  * @sub_command: the sub command which apply to each queues
   1231  * @queue_mask: Bitmap of the queues which sub command apply to
   1232  * @data: A complete command structure following for each of the queues addressed
   1233  */
   1234 struct ethtool_per_queue_op {
   1235 	__u32	cmd;
   1236 	__u32	sub_command;
   1237 	__u32	queue_mask[__KERNEL_DIV_ROUND_UP(MAX_NUM_QUEUE, 32)];
   1238 	char	data[];
   1239 };
   1240 
   1241 /* CMDs currently supported */
   1242 #define ETHTOOL_GSET		0x00000001 /* DEPRECATED, Get settings.
   1243 					    * Please use ETHTOOL_GLINKSETTINGS
   1244 					    */
   1245 #define ETHTOOL_SSET		0x00000002 /* DEPRECATED, Set settings.
   1246 					    * Please use ETHTOOL_SLINKSETTINGS
   1247 					    */
   1248 #define ETHTOOL_GDRVINFO	0x00000003 /* Get driver info. */
   1249 #define ETHTOOL_GREGS		0x00000004 /* Get NIC registers. */
   1250 #define ETHTOOL_GWOL		0x00000005 /* Get wake-on-lan options. */
   1251 #define ETHTOOL_SWOL		0x00000006 /* Set wake-on-lan options. */
   1252 #define ETHTOOL_GMSGLVL		0x00000007 /* Get driver message level */
   1253 #define ETHTOOL_SMSGLVL		0x00000008 /* Set driver msg level. */
   1254 #define ETHTOOL_NWAY_RST	0x00000009 /* Restart autonegotiation. */
   1255 /* Get link status for host, i.e. whether the interface *and* the
   1256  * physical port (if there is one) are up (ethtool_value). */
   1257 #define ETHTOOL_GLINK		0x0000000a
   1258 #define ETHTOOL_GEEPROM		0x0000000b /* Get EEPROM data */
   1259 #define ETHTOOL_SEEPROM		0x0000000c /* Set EEPROM data. */
   1260 #define ETHTOOL_GCOALESCE	0x0000000e /* Get coalesce config */
   1261 #define ETHTOOL_SCOALESCE	0x0000000f /* Set coalesce config. */
   1262 #define ETHTOOL_GRINGPARAM	0x00000010 /* Get ring parameters */
   1263 #define ETHTOOL_SRINGPARAM	0x00000011 /* Set ring parameters. */
   1264 #define ETHTOOL_GPAUSEPARAM	0x00000012 /* Get pause parameters */
   1265 #define ETHTOOL_SPAUSEPARAM	0x00000013 /* Set pause parameters. */
   1266 #define ETHTOOL_GRXCSUM		0x00000014 /* Get RX hw csum enable (ethtool_value) */
   1267 #define ETHTOOL_SRXCSUM		0x00000015 /* Set RX hw csum enable (ethtool_value) */
   1268 #define ETHTOOL_GTXCSUM		0x00000016 /* Get TX hw csum enable (ethtool_value) */
   1269 #define ETHTOOL_STXCSUM		0x00000017 /* Set TX hw csum enable (ethtool_value) */
   1270 #define ETHTOOL_GSG		0x00000018 /* Get scatter-gather enable
   1271 					    * (ethtool_value) */
   1272 #define ETHTOOL_SSG		0x00000019 /* Set scatter-gather enable
   1273 					    * (ethtool_value). */
   1274 #define ETHTOOL_TEST		0x0000001a /* execute NIC self-test. */
   1275 #define ETHTOOL_GSTRINGS	0x0000001b /* get specified string set */
   1276 #define ETHTOOL_PHYS_ID		0x0000001c /* identify the NIC */
   1277 #define ETHTOOL_GSTATS		0x0000001d /* get NIC-specific statistics */
   1278 #define ETHTOOL_GTSO		0x0000001e /* Get TSO enable (ethtool_value) */
   1279 #define ETHTOOL_STSO		0x0000001f /* Set TSO enable (ethtool_value) */
   1280 #define ETHTOOL_GPERMADDR	0x00000020 /* Get permanent hardware address */
   1281 #define ETHTOOL_GUFO		0x00000021 /* Get UFO enable (ethtool_value) */
   1282 #define ETHTOOL_SUFO		0x00000022 /* Set UFO enable (ethtool_value) */
   1283 #define ETHTOOL_GGSO		0x00000023 /* Get GSO enable (ethtool_value) */
   1284 #define ETHTOOL_SGSO		0x00000024 /* Set GSO enable (ethtool_value) */
   1285 #define ETHTOOL_GFLAGS		0x00000025 /* Get flags bitmap(ethtool_value) */
   1286 #define ETHTOOL_SFLAGS		0x00000026 /* Set flags bitmap(ethtool_value) */
   1287 #define ETHTOOL_GPFLAGS		0x00000027 /* Get driver-private flags bitmap */
   1288 #define ETHTOOL_SPFLAGS		0x00000028 /* Set driver-private flags bitmap */
   1289 
   1290 #define ETHTOOL_GRXFH		0x00000029 /* Get RX flow hash configuration */
   1291 #define ETHTOOL_SRXFH		0x0000002a /* Set RX flow hash configuration */
   1292 #define ETHTOOL_GGRO		0x0000002b /* Get GRO enable (ethtool_value) */
   1293 #define ETHTOOL_SGRO		0x0000002c /* Set GRO enable (ethtool_value) */
   1294 #define ETHTOOL_GRXRINGS	0x0000002d /* Get RX rings available for LB */
   1295 #define ETHTOOL_GRXCLSRLCNT	0x0000002e /* Get RX class rule count */
   1296 #define ETHTOOL_GRXCLSRULE	0x0000002f /* Get RX classification rule */
   1297 #define ETHTOOL_GRXCLSRLALL	0x00000030 /* Get all RX classification rule */
   1298 #define ETHTOOL_SRXCLSRLDEL	0x00000031 /* Delete RX classification rule */
   1299 #define ETHTOOL_SRXCLSRLINS	0x00000032 /* Insert RX classification rule */
   1300 #define ETHTOOL_FLASHDEV	0x00000033 /* Flash firmware to device */
   1301 #define ETHTOOL_RESET		0x00000034 /* Reset hardware */
   1302 #define ETHTOOL_SRXNTUPLE	0x00000035 /* Add an n-tuple filter to device */
   1303 #define ETHTOOL_GRXNTUPLE	0x00000036 /* deprecated */
   1304 #define ETHTOOL_GSSET_INFO	0x00000037 /* Get string set info */
   1305 #define ETHTOOL_GRXFHINDIR	0x00000038 /* Get RX flow hash indir'n table */
   1306 #define ETHTOOL_SRXFHINDIR	0x00000039 /* Set RX flow hash indir'n table */
   1307 
   1308 #define ETHTOOL_GFEATURES	0x0000003a /* Get device offload settings */
   1309 #define ETHTOOL_SFEATURES	0x0000003b /* Change device offload settings */
   1310 #define ETHTOOL_GCHANNELS	0x0000003c /* Get no of channels */
   1311 #define ETHTOOL_SCHANNELS	0x0000003d /* Set no of channels */
   1312 #define ETHTOOL_SET_DUMP	0x0000003e /* Set dump settings */
   1313 #define ETHTOOL_GET_DUMP_FLAG	0x0000003f /* Get dump settings */
   1314 #define ETHTOOL_GET_DUMP_DATA	0x00000040 /* Get dump data */
   1315 #define ETHTOOL_GET_TS_INFO	0x00000041 /* Get time stamping and PHC info */
   1316 #define ETHTOOL_GMODULEINFO	0x00000042 /* Get plug-in module information */
   1317 #define ETHTOOL_GMODULEEEPROM	0x00000043 /* Get plug-in module eeprom */
   1318 #define ETHTOOL_GEEE		0x00000044 /* Get EEE settings */
   1319 #define ETHTOOL_SEEE		0x00000045 /* Set EEE settings */
   1320 
   1321 #define ETHTOOL_GRSSH		0x00000046 /* Get RX flow hash configuration */
   1322 #define ETHTOOL_SRSSH		0x00000047 /* Set RX flow hash configuration */
   1323 #define ETHTOOL_GTUNABLE	0x00000048 /* Get tunable configuration */
   1324 #define ETHTOOL_STUNABLE	0x00000049 /* Set tunable configuration */
   1325 #define ETHTOOL_GPHYSTATS	0x0000004a /* get PHY-specific statistics */
   1326 
   1327 #define ETHTOOL_PERQUEUE	0x0000004b /* Set per queue options */
   1328 
   1329 #define ETHTOOL_GLINKSETTINGS	0x0000004c /* Get ethtool_link_settings */
   1330 #define ETHTOOL_SLINKSETTINGS	0x0000004d /* Set ethtool_link_settings */
   1331 #define ETHTOOL_PHY_GTUNABLE	0x0000004e /* Get PHY tunable configuration */
   1332 #define ETHTOOL_PHY_STUNABLE	0x0000004f /* Set PHY tunable configuration */
   1333 
   1334 /* compatibility with older code */
   1335 #define SPARC_ETH_GSET		ETHTOOL_GSET
   1336 #define SPARC_ETH_SSET		ETHTOOL_SSET
   1337 
   1338 /* Link mode bit indices */
   1339 enum ethtool_link_mode_bit_indices {
   1340 	ETHTOOL_LINK_MODE_10baseT_Half_BIT	= 0,
   1341 	ETHTOOL_LINK_MODE_10baseT_Full_BIT	= 1,
   1342 	ETHTOOL_LINK_MODE_100baseT_Half_BIT	= 2,
   1343 	ETHTOOL_LINK_MODE_100baseT_Full_BIT	= 3,
   1344 	ETHTOOL_LINK_MODE_1000baseT_Half_BIT	= 4,
   1345 	ETHTOOL_LINK_MODE_1000baseT_Full_BIT	= 5,
   1346 	ETHTOOL_LINK_MODE_Autoneg_BIT		= 6,
   1347 	ETHTOOL_LINK_MODE_TP_BIT		= 7,
   1348 	ETHTOOL_LINK_MODE_AUI_BIT		= 8,
   1349 	ETHTOOL_LINK_MODE_MII_BIT		= 9,
   1350 	ETHTOOL_LINK_MODE_FIBRE_BIT		= 10,
   1351 	ETHTOOL_LINK_MODE_BNC_BIT		= 11,
   1352 	ETHTOOL_LINK_MODE_10000baseT_Full_BIT	= 12,
   1353 	ETHTOOL_LINK_MODE_Pause_BIT		= 13,
   1354 	ETHTOOL_LINK_MODE_Asym_Pause_BIT	= 14,
   1355 	ETHTOOL_LINK_MODE_2500baseX_Full_BIT	= 15,
   1356 	ETHTOOL_LINK_MODE_Backplane_BIT		= 16,
   1357 	ETHTOOL_LINK_MODE_1000baseKX_Full_BIT	= 17,
   1358 	ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT	= 18,
   1359 	ETHTOOL_LINK_MODE_10000baseKR_Full_BIT	= 19,
   1360 	ETHTOOL_LINK_MODE_10000baseR_FEC_BIT	= 20,
   1361 	ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT = 21,
   1362 	ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT	= 22,
   1363 	ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT	= 23,
   1364 	ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT	= 24,
   1365 	ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT	= 25,
   1366 	ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT	= 26,
   1367 	ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT	= 27,
   1368 	ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT	= 28,
   1369 	ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT	= 29,
   1370 	ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT	= 30,
   1371 	ETHTOOL_LINK_MODE_25000baseCR_Full_BIT	= 31,
   1372 	ETHTOOL_LINK_MODE_25000baseKR_Full_BIT	= 32,
   1373 	ETHTOOL_LINK_MODE_25000baseSR_Full_BIT	= 33,
   1374 	ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT	= 34,
   1375 	ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT	= 35,
   1376 	ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT	= 36,
   1377 	ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT	= 37,
   1378 	ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT	= 38,
   1379 	ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT	= 39,
   1380 	ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT		= 40,
   1381 	ETHTOOL_LINK_MODE_1000baseX_Full_BIT	= 41,
   1382 	ETHTOOL_LINK_MODE_10000baseCR_Full_BIT	= 42,
   1383 	ETHTOOL_LINK_MODE_10000baseSR_Full_BIT	= 43,
   1384 	ETHTOOL_LINK_MODE_10000baseLR_Full_BIT	= 44,
   1385 	ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT	= 45,
   1386 	ETHTOOL_LINK_MODE_10000baseER_Full_BIT	= 46,
   1387 	ETHTOOL_LINK_MODE_2500baseT_Full_BIT	= 47,
   1388 	ETHTOOL_LINK_MODE_5000baseT_Full_BIT	= 48,
   1389 
   1390 
   1391 	/* Last allowed bit for __ETHTOOL_LINK_MODE_LEGACY_MASK is bit
   1392 	 * 31. Please do NOT define any SUPPORTED_* or ADVERTISED_*
   1393 	 * macro for bits > 31. The only way to use indices > 31 is to
   1394 	 * use the new ETHTOOL_GLINKSETTINGS/ETHTOOL_SLINKSETTINGS API.
   1395 	 */
   1396 
   1397 	__ETHTOOL_LINK_MODE_LAST
   1398 	  = ETHTOOL_LINK_MODE_5000baseT_Full_BIT,
   1399 };
   1400 
   1401 #define __ETHTOOL_LINK_MODE_LEGACY_MASK(base_name)	\
   1402 	(1UL << (ETHTOOL_LINK_MODE_ ## base_name ## _BIT))
   1403 
   1404 /* DEPRECATED macros. Please migrate to
   1405  * ETHTOOL_GLINKSETTINGS/ETHTOOL_SLINKSETTINGS API. Please do NOT
   1406  * define any new SUPPORTED_* macro for bits > 31.
   1407  */
   1408 #define SUPPORTED_10baseT_Half		__ETHTOOL_LINK_MODE_LEGACY_MASK(10baseT_Half)
   1409 #define SUPPORTED_10baseT_Full		__ETHTOOL_LINK_MODE_LEGACY_MASK(10baseT_Full)
   1410 #define SUPPORTED_100baseT_Half		__ETHTOOL_LINK_MODE_LEGACY_MASK(100baseT_Half)
   1411 #define SUPPORTED_100baseT_Full		__ETHTOOL_LINK_MODE_LEGACY_MASK(100baseT_Full)
   1412 #define SUPPORTED_1000baseT_Half	__ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseT_Half)
   1413 #define SUPPORTED_1000baseT_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseT_Full)
   1414 #define SUPPORTED_Autoneg		__ETHTOOL_LINK_MODE_LEGACY_MASK(Autoneg)
   1415 #define SUPPORTED_TP			__ETHTOOL_LINK_MODE_LEGACY_MASK(TP)
   1416 #define SUPPORTED_AUI			__ETHTOOL_LINK_MODE_LEGACY_MASK(AUI)
   1417 #define SUPPORTED_MII			__ETHTOOL_LINK_MODE_LEGACY_MASK(MII)
   1418 #define SUPPORTED_FIBRE			__ETHTOOL_LINK_MODE_LEGACY_MASK(FIBRE)
   1419 #define SUPPORTED_BNC			__ETHTOOL_LINK_MODE_LEGACY_MASK(BNC)
   1420 #define SUPPORTED_10000baseT_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseT_Full)
   1421 #define SUPPORTED_Pause			__ETHTOOL_LINK_MODE_LEGACY_MASK(Pause)
   1422 #define SUPPORTED_Asym_Pause		__ETHTOOL_LINK_MODE_LEGACY_MASK(Asym_Pause)
   1423 #define SUPPORTED_2500baseX_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(2500baseX_Full)
   1424 #define SUPPORTED_Backplane		__ETHTOOL_LINK_MODE_LEGACY_MASK(Backplane)
   1425 #define SUPPORTED_1000baseKX_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseKX_Full)
   1426 #define SUPPORTED_10000baseKX4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseKX4_Full)
   1427 #define SUPPORTED_10000baseKR_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseKR_Full)
   1428 #define SUPPORTED_10000baseR_FEC	__ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseR_FEC)
   1429 #define SUPPORTED_20000baseMLD2_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(20000baseMLD2_Full)
   1430 #define SUPPORTED_20000baseKR2_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(20000baseKR2_Full)
   1431 #define SUPPORTED_40000baseKR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseKR4_Full)
   1432 #define SUPPORTED_40000baseCR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseCR4_Full)
   1433 #define SUPPORTED_40000baseSR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseSR4_Full)
   1434 #define SUPPORTED_40000baseLR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseLR4_Full)
   1435 #define SUPPORTED_56000baseKR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseKR4_Full)
   1436 #define SUPPORTED_56000baseCR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseCR4_Full)
   1437 #define SUPPORTED_56000baseSR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseSR4_Full)
   1438 #define SUPPORTED_56000baseLR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseLR4_Full)
   1439 /* Please do not define any new SUPPORTED_* macro for bits > 31, see
   1440  * notice above.
   1441  */
   1442 
   1443 /*
   1444  * DEPRECATED macros. Please migrate to
   1445  * ETHTOOL_GLINKSETTINGS/ETHTOOL_SLINKSETTINGS API. Please do NOT
   1446  * define any new ADERTISE_* macro for bits > 31.
   1447  */
   1448 #define ADVERTISED_10baseT_Half		__ETHTOOL_LINK_MODE_LEGACY_MASK(10baseT_Half)
   1449 #define ADVERTISED_10baseT_Full		__ETHTOOL_LINK_MODE_LEGACY_MASK(10baseT_Full)
   1450 #define ADVERTISED_100baseT_Half	__ETHTOOL_LINK_MODE_LEGACY_MASK(100baseT_Half)
   1451 #define ADVERTISED_100baseT_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(100baseT_Full)
   1452 #define ADVERTISED_1000baseT_Half	__ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseT_Half)
   1453 #define ADVERTISED_1000baseT_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseT_Full)
   1454 #define ADVERTISED_Autoneg		__ETHTOOL_LINK_MODE_LEGACY_MASK(Autoneg)
   1455 #define ADVERTISED_TP			__ETHTOOL_LINK_MODE_LEGACY_MASK(TP)
   1456 #define ADVERTISED_AUI			__ETHTOOL_LINK_MODE_LEGACY_MASK(AUI)
   1457 #define ADVERTISED_MII			__ETHTOOL_LINK_MODE_LEGACY_MASK(MII)
   1458 #define ADVERTISED_FIBRE		__ETHTOOL_LINK_MODE_LEGACY_MASK(FIBRE)
   1459 #define ADVERTISED_BNC			__ETHTOOL_LINK_MODE_LEGACY_MASK(BNC)
   1460 #define ADVERTISED_10000baseT_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseT_Full)
   1461 #define ADVERTISED_Pause		__ETHTOOL_LINK_MODE_LEGACY_MASK(Pause)
   1462 #define ADVERTISED_Asym_Pause		__ETHTOOL_LINK_MODE_LEGACY_MASK(Asym_Pause)
   1463 #define ADVERTISED_2500baseX_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(2500baseX_Full)
   1464 #define ADVERTISED_Backplane		__ETHTOOL_LINK_MODE_LEGACY_MASK(Backplane)
   1465 #define ADVERTISED_1000baseKX_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseKX_Full)
   1466 #define ADVERTISED_10000baseKX4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseKX4_Full)
   1467 #define ADVERTISED_10000baseKR_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseKR_Full)
   1468 #define ADVERTISED_10000baseR_FEC	__ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseR_FEC)
   1469 #define ADVERTISED_20000baseMLD2_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(20000baseMLD2_Full)
   1470 #define ADVERTISED_20000baseKR2_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(20000baseKR2_Full)
   1471 #define ADVERTISED_40000baseKR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseKR4_Full)
   1472 #define ADVERTISED_40000baseCR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseCR4_Full)
   1473 #define ADVERTISED_40000baseSR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseSR4_Full)
   1474 #define ADVERTISED_40000baseLR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseLR4_Full)
   1475 #define ADVERTISED_56000baseKR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseKR4_Full)
   1476 #define ADVERTISED_56000baseCR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseCR4_Full)
   1477 #define ADVERTISED_56000baseSR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseSR4_Full)
   1478 #define ADVERTISED_56000baseLR4_Full	__ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseLR4_Full)
   1479 /* Please do not define any new ADVERTISED_* macro for bits > 31, see
   1480  * notice above.
   1481  */
   1482 
   1483 /* The following are all involved in forcing a particular link
   1484  * mode for the device for setting things.  When getting the
   1485  * devices settings, these indicate the current mode and whether
   1486  * it was forced up into this mode or autonegotiated.
   1487  */
   1488 
   1489 /* The forced speed, in units of 1Mb. All values 0 to INT_MAX are legal. */
   1490 #define SPEED_10		10
   1491 #define SPEED_100		100
   1492 #define SPEED_1000		1000
   1493 #define SPEED_2500		2500
   1494 #define SPEED_5000		5000
   1495 #define SPEED_10000		10000
   1496 #define SPEED_20000		20000
   1497 #define SPEED_25000		25000
   1498 #define SPEED_40000		40000
   1499 #define SPEED_50000		50000
   1500 #define SPEED_56000		56000
   1501 #define SPEED_100000		100000
   1502 
   1503 #define SPEED_UNKNOWN		-1
   1504 
   1505 static inline int ethtool_validate_speed(__u32 speed)
   1506 {
   1507 	return speed <= INT_MAX || speed == SPEED_UNKNOWN;
   1508 }
   1509 
   1510 /* Duplex, half or full. */
   1511 #define DUPLEX_HALF		0x00
   1512 #define DUPLEX_FULL		0x01
   1513 #define DUPLEX_UNKNOWN		0xff
   1514 
   1515 static inline int ethtool_validate_duplex(__u8 duplex)
   1516 {
   1517 	switch (duplex) {
   1518 	case DUPLEX_HALF:
   1519 	case DUPLEX_FULL:
   1520 	case DUPLEX_UNKNOWN:
   1521 		return 1;
   1522 	}
   1523 
   1524 	return 0;
   1525 }
   1526 
   1527 /* Which connector port. */
   1528 #define PORT_TP			0x00
   1529 #define PORT_AUI		0x01
   1530 #define PORT_MII		0x02
   1531 #define PORT_FIBRE		0x03
   1532 #define PORT_BNC		0x04
   1533 #define PORT_DA			0x05
   1534 #define PORT_NONE		0xef
   1535 #define PORT_OTHER		0xff
   1536 
   1537 /* Which transceiver to use. */
   1538 #define XCVR_INTERNAL		0x00 /* PHY and MAC are in the same package */
   1539 #define XCVR_EXTERNAL		0x01 /* PHY and MAC are in different packages */
   1540 #define XCVR_DUMMY1		0x02
   1541 #define XCVR_DUMMY2		0x03
   1542 #define XCVR_DUMMY3		0x04
   1543 
   1544 /* Enable or disable autonegotiation. */
   1545 #define AUTONEG_DISABLE		0x00
   1546 #define AUTONEG_ENABLE		0x01
   1547 
   1548 /* MDI or MDI-X status/control - if MDI/MDI_X/AUTO is set then
   1549  * the driver is required to renegotiate link
   1550  */
   1551 #define ETH_TP_MDI_INVALID	0x00 /* status: unknown; control: unsupported */
   1552 #define ETH_TP_MDI		0x01 /* status: MDI;     control: force MDI */
   1553 #define ETH_TP_MDI_X		0x02 /* status: MDI-X;   control: force MDI-X */
   1554 #define ETH_TP_MDI_AUTO		0x03 /*                  control: auto-select */
   1555 
   1556 /* Wake-On-Lan options. */
   1557 #define WAKE_PHY		(1 << 0)
   1558 #define WAKE_UCAST		(1 << 1)
   1559 #define WAKE_MCAST		(1 << 2)
   1560 #define WAKE_BCAST		(1 << 3)
   1561 #define WAKE_ARP		(1 << 4)
   1562 #define WAKE_MAGIC		(1 << 5)
   1563 #define WAKE_MAGICSECURE	(1 << 6) /* only meaningful if WAKE_MAGIC */
   1564 
   1565 /* L2-L4 network traffic flow types */
   1566 #define	TCP_V4_FLOW	0x01	/* hash or spec (tcp_ip4_spec) */
   1567 #define	UDP_V4_FLOW	0x02	/* hash or spec (udp_ip4_spec) */
   1568 #define	SCTP_V4_FLOW	0x03	/* hash or spec (sctp_ip4_spec) */
   1569 #define	AH_ESP_V4_FLOW	0x04	/* hash only */
   1570 #define	TCP_V6_FLOW	0x05	/* hash or spec (tcp_ip6_spec; nfc only) */
   1571 #define	UDP_V6_FLOW	0x06	/* hash or spec (udp_ip6_spec; nfc only) */
   1572 #define	SCTP_V6_FLOW	0x07	/* hash or spec (sctp_ip6_spec; nfc only) */
   1573 #define	AH_ESP_V6_FLOW	0x08	/* hash only */
   1574 #define	AH_V4_FLOW	0x09	/* hash or spec (ah_ip4_spec) */
   1575 #define	ESP_V4_FLOW	0x0a	/* hash or spec (esp_ip4_spec) */
   1576 #define	AH_V6_FLOW	0x0b	/* hash or spec (ah_ip6_spec; nfc only) */
   1577 #define	ESP_V6_FLOW	0x0c	/* hash or spec (esp_ip6_spec; nfc only) */
   1578 #define	IPV4_USER_FLOW	0x0d	/* spec only (usr_ip4_spec) */
   1579 #define	IP_USER_FLOW	IPV4_USER_FLOW
   1580 #define	IPV6_USER_FLOW	0x0e	/* spec only (usr_ip6_spec; nfc only) */
   1581 #define	IPV4_FLOW	0x10	/* hash only */
   1582 #define	IPV6_FLOW	0x11	/* hash only */
   1583 #define	ETHER_FLOW	0x12	/* spec only (ether_spec) */
   1584 /* Flag to enable additional fields in struct ethtool_rx_flow_spec */
   1585 #define	FLOW_EXT	0x80000000
   1586 #define	FLOW_MAC_EXT	0x40000000
   1587 
   1588 /* L3-L4 network traffic flow hash options */
   1589 #define	RXH_L2DA	(1 << 1)
   1590 #define	RXH_VLAN	(1 << 2)
   1591 #define	RXH_L3_PROTO	(1 << 3)
   1592 #define	RXH_IP_SRC	(1 << 4)
   1593 #define	RXH_IP_DST	(1 << 5)
   1594 #define	RXH_L4_B_0_1	(1 << 6) /* src port in case of TCP/UDP/SCTP */
   1595 #define	RXH_L4_B_2_3	(1 << 7) /* dst port in case of TCP/UDP/SCTP */
   1596 #define	RXH_DISCARD	(1 << 31)
   1597 
   1598 #define	RX_CLS_FLOW_DISC	0xffffffffffffffffULL
   1599 
   1600 /* Special RX classification rule insert location values */
   1601 #define RX_CLS_LOC_SPECIAL	0x80000000	/* flag */
   1602 #define RX_CLS_LOC_ANY		0xffffffff
   1603 #define RX_CLS_LOC_FIRST	0xfffffffe
   1604 #define RX_CLS_LOC_LAST		0xfffffffd
   1605 
   1606 /* EEPROM Standards for plug in modules */
   1607 #define ETH_MODULE_SFF_8079		0x1
   1608 #define ETH_MODULE_SFF_8079_LEN		256
   1609 #define ETH_MODULE_SFF_8472		0x2
   1610 #define ETH_MODULE_SFF_8472_LEN		512
   1611 #define ETH_MODULE_SFF_8636		0x3
   1612 #define ETH_MODULE_SFF_8636_LEN		256
   1613 #define ETH_MODULE_SFF_8436		0x4
   1614 #define ETH_MODULE_SFF_8436_LEN		256
   1615 
   1616 /* Reset flags */
   1617 /* The reset() operation must clear the flags for the components which
   1618  * were actually reset.  On successful return, the flags indicate the
   1619  * components which were not reset, either because they do not exist
   1620  * in the hardware or because they cannot be reset independently.  The
   1621  * driver must never reset any components that were not requested.
   1622  */
   1623 enum ethtool_reset_flags {
   1624 	/* These flags represent components dedicated to the interface
   1625 	 * the command is addressed to.  Shift any flag left by
   1626 	 * ETH_RESET_SHARED_SHIFT to reset a shared component of the
   1627 	 * same type.
   1628 	 */
   1629 	ETH_RESET_MGMT		= 1 << 0,	/* Management processor */
   1630 	ETH_RESET_IRQ		= 1 << 1,	/* Interrupt requester */
   1631 	ETH_RESET_DMA		= 1 << 2,	/* DMA engine */
   1632 	ETH_RESET_FILTER	= 1 << 3,	/* Filtering/flow direction */
   1633 	ETH_RESET_OFFLOAD	= 1 << 4,	/* Protocol offload */
   1634 	ETH_RESET_MAC		= 1 << 5,	/* Media access controller */
   1635 	ETH_RESET_PHY		= 1 << 6,	/* Transceiver/PHY */
   1636 	ETH_RESET_RAM		= 1 << 7,	/* RAM shared between
   1637 						 * multiple components */
   1638 
   1639 	ETH_RESET_DEDICATED	= 0x0000ffff,	/* All components dedicated to
   1640 						 * this interface */
   1641 	ETH_RESET_ALL		= 0xffffffff,	/* All components used by this
   1642 						 * interface, even if shared */
   1643 };
   1644 #define ETH_RESET_SHARED_SHIFT	16
   1645 
   1646 
   1647 /**
   1648  * struct ethtool_link_settings - link control and status
   1649  *
   1650  * IMPORTANT, Backward compatibility notice: When implementing new
   1651  *	user-space tools, please first try %ETHTOOL_GLINKSETTINGS, and
   1652  *	if it succeeds use %ETHTOOL_SLINKSETTINGS to change link
   1653  *	settings; do not use %ETHTOOL_SSET if %ETHTOOL_GLINKSETTINGS
   1654  *	succeeded: stick to %ETHTOOL_GLINKSETTINGS/%SLINKSETTINGS in
   1655  *	that case.  Conversely, if %ETHTOOL_GLINKSETTINGS fails, use
   1656  *	%ETHTOOL_GSET to query and %ETHTOOL_SSET to change link
   1657  *	settings; do not use %ETHTOOL_SLINKSETTINGS if
   1658  *	%ETHTOOL_GLINKSETTINGS failed: stick to
   1659  *	%ETHTOOL_GSET/%ETHTOOL_SSET in that case.
   1660  *
   1661  * @cmd: Command number = %ETHTOOL_GLINKSETTINGS or %ETHTOOL_SLINKSETTINGS
   1662  * @speed: Link speed (Mbps)
   1663  * @duplex: Duplex mode; one of %DUPLEX_*
   1664  * @port: Physical connector type; one of %PORT_*
   1665  * @phy_address: MDIO address of PHY (transceiver); 0 or 255 if not
   1666  *	applicable.  For clause 45 PHYs this is the PRTAD.
   1667  * @autoneg: Enable/disable autonegotiation and auto-detection;
   1668  *	either %AUTONEG_DISABLE or %AUTONEG_ENABLE
   1669  * @mdio_support: Bitmask of %ETH_MDIO_SUPPORTS_* flags for the MDIO
   1670  *	protocols supported by the interface; 0 if unknown.
   1671  *	Read-only.
   1672  * @eth_tp_mdix: Ethernet twisted-pair MDI(-X) status; one of
   1673  *	%ETH_TP_MDI_*.  If the status is unknown or not applicable, the
   1674  *	value will be %ETH_TP_MDI_INVALID.  Read-only.
   1675  * @eth_tp_mdix_ctrl: Ethernet twisted pair MDI(-X) control; one of
   1676  *	%ETH_TP_MDI_*.  If MDI(-X) control is not implemented, reads
   1677  *	yield %ETH_TP_MDI_INVALID and writes may be ignored or rejected.
   1678  *	When written successfully, the link should be renegotiated if
   1679  *	necessary.
   1680  * @link_mode_masks_nwords: Number of 32-bit words for each of the
   1681  *	supported, advertising, lp_advertising link mode bitmaps. For
   1682  *	%ETHTOOL_GLINKSETTINGS: on entry, number of words passed by user
   1683  *	(>= 0); on return, if handshake in progress, negative if
   1684  *	request size unsupported by kernel: absolute value indicates
   1685  *	kernel expected size and all the other fields but cmd
   1686  *	are 0; otherwise (handshake completed), strictly positive
   1687  *	to indicate size used by kernel and cmd field stays
   1688  *	%ETHTOOL_GLINKSETTINGS, all other fields populated by driver. For
   1689  *	%ETHTOOL_SLINKSETTINGS: must be valid on entry, ie. a positive
   1690  *	value returned previously by %ETHTOOL_GLINKSETTINGS, otherwise
   1691  *	refused. For drivers: ignore this field (use kernel's
   1692  *	__ETHTOOL_LINK_MODE_MASK_NBITS instead), any change to it will
   1693  *	be overwritten by kernel.
   1694  * @supported: Bitmap with each bit meaning given by
   1695  *	%ethtool_link_mode_bit_indices for the link modes, physical
   1696  *	connectors and other link features for which the interface
   1697  *	supports autonegotiation or auto-detection.  Read-only.
   1698  * @advertising: Bitmap with each bit meaning given by
   1699  *	%ethtool_link_mode_bit_indices for the link modes, physical
   1700  *	connectors and other link features that are advertised through
   1701  *	autonegotiation or enabled for auto-detection.
   1702  * @lp_advertising: Bitmap with each bit meaning given by
   1703  *	%ethtool_link_mode_bit_indices for the link modes, and other
   1704  *	link features that the link partner advertised through
   1705  *	autonegotiation; 0 if unknown or not applicable.  Read-only.
   1706  *
   1707  * If autonegotiation is disabled, the speed and @duplex represent the
   1708  * fixed link mode and are writable if the driver supports multiple
   1709  * link modes.  If it is enabled then they are read-only; if the link
   1710  * is up they represent the negotiated link mode; if the link is down,
   1711  * the speed is 0, %SPEED_UNKNOWN or the highest enabled speed and
   1712  * @duplex is %DUPLEX_UNKNOWN or the best enabled duplex mode.
   1713  *
   1714  * Some hardware interfaces may have multiple PHYs and/or physical
   1715  * connectors fitted or do not allow the driver to detect which are
   1716  * fitted.  For these interfaces @port and/or @phy_address may be
   1717  * writable, possibly dependent on @autoneg being %AUTONEG_DISABLE.
   1718  * Otherwise, attempts to write different values may be ignored or
   1719  * rejected.
   1720  *
   1721  * Deprecated %ethtool_cmd fields transceiver, maxtxpkt and maxrxpkt
   1722  * are not available in %ethtool_link_settings. Until all drivers are
   1723  * converted to ignore them or to the new %ethtool_link_settings API,
   1724  * for both queries and changes, users should always try
   1725  * %ETHTOOL_GLINKSETTINGS first, and if it fails with -ENOTSUPP stick
   1726  * only to %ETHTOOL_GSET and %ETHTOOL_SSET consistently. If it
   1727  * succeeds, then users should stick to %ETHTOOL_GLINKSETTINGS and
   1728  * %ETHTOOL_SLINKSETTINGS (which would support drivers implementing
   1729  * either %ethtool_cmd or %ethtool_link_settings).
   1730  *
   1731  * Users should assume that all fields not marked read-only are
   1732  * writable and subject to validation by the driver.  They should use
   1733  * %ETHTOOL_GLINKSETTINGS to get the current values before making specific
   1734  * changes and then applying them with %ETHTOOL_SLINKSETTINGS.
   1735  *
   1736  * Drivers that implement %get_link_ksettings and/or
   1737  * %set_link_ksettings should ignore the @cmd
   1738  * and @link_mode_masks_nwords fields (any change to them overwritten
   1739  * by kernel), and rely only on kernel's internal
   1740  * %__ETHTOOL_LINK_MODE_MASK_NBITS and
   1741  * %ethtool_link_mode_mask_t. Drivers that implement
   1742  * %set_link_ksettings() should validate all fields other than @cmd
   1743  * and @link_mode_masks_nwords that are not described as read-only or
   1744  * deprecated, and must ignore all fields described as read-only.
   1745  */
   1746 struct ethtool_link_settings {
   1747 	__u32	cmd;
   1748 	__u32	speed;
   1749 	__u8	duplex;
   1750 	__u8	port;
   1751 	__u8	phy_address;
   1752 	__u8	autoneg;
   1753 	__u8	mdio_support;
   1754 	__u8	eth_tp_mdix;
   1755 	__u8	eth_tp_mdix_ctrl;
   1756 	__s8	link_mode_masks_nwords;
   1757 	__u32	reserved[8];
   1758 	__u32	link_mode_masks[0];
   1759 	/* layout of link_mode_masks fields:
   1760 	 * __u32 map_supported[link_mode_masks_nwords];
   1761 	 * __u32 map_advertising[link_mode_masks_nwords];
   1762 	 * __u32 map_lp_advertising[link_mode_masks_nwords];
   1763 	 */
   1764 };
   1765 #endif /* _UAPI_LINUX_ETHTOOL_H */
   1766