/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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/*

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* ethtool.h: Defines for Linux ethtool.

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*

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* Copyright (C) 1998 David S. Miller (davem@redhat.com)

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* Copyright 2001 Jeff Garzik <jgarzik@pobox.com>

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* Portions Copyright 2001 Sun Microsystems (thockin@sun.com)

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* Portions Copyright 2002 Intel (eli.kupermann@intel.com,

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* christopher.leech@intel.com,

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* scott.feldman@intel.com)

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* Portions Copyright (C) Sun Microsystems 2008

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*/

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#ifndef _LINUX_ETHTOOL_H

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#define _LINUX_ETHTOOL_H

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#include <linux/kernel.h>

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#include <linux/types.h>

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#include <linux/if_ether.h>

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#include <limits.h> /* for INT_MAX */

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/* All structures exposed to userland should be defined such that they

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* have the same layout for 32-bit and 64-bit userland.

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*/

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/* Note on reserved space.

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* Reserved fields must not be accessed directly by user space because

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* they may be replaced by a different field in the future. They must

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* be initialized to zero before making the request, e.g. via memset

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* of the entire structure or implicitly by not being set in a structure

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* initializer.

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*/

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/**

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* struct ethtool_cmd - DEPRECATED, link control and status

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* This structure is DEPRECATED, please use struct ethtool_link_settings.

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* @cmd: Command number = %ETHTOOL_GSET or %ETHTOOL_SSET

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* @supported: Bitmask of %SUPPORTED_* flags for the link modes,

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* physical connectors and other link features for which the

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* interface supports autonegotiation or auto-detection.

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* Read-only.

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* @advertising: Bitmask of %ADVERTISED_* flags for the link modes,

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* physical connectors and other link features that are

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* advertised through autonegotiation or enabled for

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* auto-detection.

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* @speed: Low bits of the speed, 1Mb units, 0 to INT_MAX or SPEED_UNKNOWN

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* @duplex: Duplex mode; one of %DUPLEX_*

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* @port: Physical connector type; one of %PORT_*

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* @phy_address: MDIO address of PHY (transceiver); 0 or 255 if not

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* applicable. For clause 45 PHYs this is the PRTAD.

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* @transceiver: Historically used to distinguish different possible

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* PHY types, but not in a consistent way. Deprecated.

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* @autoneg: Enable/disable autonegotiation and auto-detection;

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* either %AUTONEG_DISABLE or %AUTONEG_ENABLE

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* @mdio_support: Bitmask of %ETH_MDIO_SUPPORTS_* flags for the MDIO

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* protocols supported by the interface; 0 if unknown.

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* Read-only.

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* @maxtxpkt: Historically used to report TX IRQ coalescing; now

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* obsoleted by &struct ethtool_coalesce. Read-only; deprecated.

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* @maxrxpkt: Historically used to report RX IRQ coalescing; now

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* obsoleted by &struct ethtool_coalesce. Read-only; deprecated.

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* @speed_hi: High bits of the speed, 1Mb units, 0 to INT_MAX or SPEED_UNKNOWN

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* @eth_tp_mdix: Ethernet twisted-pair MDI(-X) status; one of

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* %ETH_TP_MDI_*. If the status is unknown or not applicable, the

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* value will be %ETH_TP_MDI_INVALID. Read-only.

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* @eth_tp_mdix_ctrl: Ethernet twisted pair MDI(-X) control; one of

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* %ETH_TP_MDI_*. If MDI(-X) control is not implemented, reads

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* yield %ETH_TP_MDI_INVALID and writes may be ignored or rejected.

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* When written successfully, the link should be renegotiated if

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* necessary.

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* @lp_advertising: Bitmask of %ADVERTISED_* flags for the link modes

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* and other link features that the link partner advertised

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* through autonegotiation; 0 if unknown or not applicable.

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* Read-only.

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* @reserved: Reserved for future use; see the note on reserved space.

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*

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* The link speed in Mbps is split between @speed and @speed_hi. Use

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* the ethtool_cmd_speed() and ethtool_cmd_speed_set() functions to

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* access it.

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*

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* If autonegotiation is disabled, the speed and @duplex represent the

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* fixed link mode and are writable if the driver supports multiple

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* link modes. If it is enabled then they are read-only; if the link

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* is up they represent the negotiated link mode; if the link is down,

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* the speed is 0, %SPEED_UNKNOWN or the highest enabled speed and

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* @duplex is %DUPLEX_UNKNOWN or the best enabled duplex mode.

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*

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* Some hardware interfaces may have multiple PHYs and/or physical

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* connectors fitted or do not allow the driver to detect which are

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* fitted. For these interfaces @port and/or @phy_address may be

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* writable, possibly dependent on @autoneg being %AUTONEG_DISABLE.

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* Otherwise, attempts to write different values may be ignored or

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* rejected.

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*

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* Users should assume that all fields not marked read-only are

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* writable and subject to validation by the driver. They should use

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* %ETHTOOL_GSET to get the current values before making specific

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* changes and then applying them with %ETHTOOL_SSET.

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*

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* Drivers that implement set_settings() should validate all fields

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* other than @cmd that are not described as read-only or deprecated,

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* and must ignore all fields described as read-only.

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*

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* Deprecated fields should be ignored by both users and drivers.

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*/

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struct ethtool_cmd {

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__u32 cmd;

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__u32 supported;

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__u32 advertising;

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__u16 speed;

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__u8 duplex;

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__u8 port;

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__u8 phy_address;

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__u8 transceiver;

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__u8 autoneg;

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__u8 mdio_support;

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__u32 maxtxpkt;

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__u32 maxrxpkt;

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__u16 speed_hi;

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__u8 eth_tp_mdix;

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__u8 eth_tp_mdix_ctrl;

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__u32 lp_advertising;

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__u32 reserved[2];

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};

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static __inline__ void ethtool_cmd_speed_set(struct ethtool_cmd *ep,

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__u32 speed)

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{

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ep->speed = (__u16)(speed & 0xFFFF);

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ep->speed_hi = (__u16)(speed >> 16);

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}

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static __inline__ __u32 ethtool_cmd_speed(const struct ethtool_cmd *ep)

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{

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return (ep->speed_hi << 16) | ep->speed;

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}

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/* Device supports clause 22 register access to PHY or peripherals

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* using the interface defined in <linux/mii.h>. This should not be

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* set if there are known to be no such peripherals present or if

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* the driver only emulates clause 22 registers for compatibility.

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*/

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#define ETH_MDIO_SUPPORTS_C22 1

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/* Device supports clause 45 register access to PHY or peripherals

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* using the interface defined in <linux/mii.h> and <linux/mdio.h>.

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* This should not be set if there are known to be no such peripherals

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* present.

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*/

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#define ETH_MDIO_SUPPORTS_C45 2

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#define ETHTOOL_FWVERS_LEN 32

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#define ETHTOOL_BUSINFO_LEN 32

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#define ETHTOOL_EROMVERS_LEN 32

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/**

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* struct ethtool_drvinfo - general driver and device information

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* @cmd: Command number = %ETHTOOL_GDRVINFO

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* @driver: Driver short name. This should normally match the name

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* in its bus driver structure (e.g. pci_driver::name). Must

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* not be an empty string.

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* @version: Driver version string; may be an empty string

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* @fw_version: Firmware version string; may be an empty string

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* @erom_version: Expansion ROM version string; may be an empty string

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* @bus_info: Device bus address. This should match the dev_name()

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* string for the underlying bus device, if there is one. May be

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* an empty string.

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* @reserved2: Reserved for future use; see the note on reserved space.

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* @n_priv_flags: Number of flags valid for %ETHTOOL_GPFLAGS and

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* %ETHTOOL_SPFLAGS commands; also the number of strings in the

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* %ETH_SS_PRIV_FLAGS set

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* @n_stats: Number of u64 statistics returned by the %ETHTOOL_GSTATS

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* command; also the number of strings in the %ETH_SS_STATS set

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* @testinfo_len: Number of results returned by the %ETHTOOL_TEST

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* command; also the number of strings in the %ETH_SS_TEST set

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* @eedump_len: Size of EEPROM accessible through the %ETHTOOL_GEEPROM

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* and %ETHTOOL_SEEPROM commands, in bytes

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* @regdump_len: Size of register dump returned by the %ETHTOOL_GREGS

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* command, in bytes

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*

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* Users can use the %ETHTOOL_GSSET_INFO command to get the number of

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* strings in any string set (from Linux 2.6.34).

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*

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* Drivers should set at most @driver, @version, @fw_version and

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* @bus_info in their get_drvinfo() implementation. The ethtool

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* core fills in the other fields using other driver operations.

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*/

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struct ethtool_drvinfo {

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__u32 cmd;

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char driver[32];

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char version[32];

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char fw_version[ETHTOOL_FWVERS_LEN];

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char bus_info[ETHTOOL_BUSINFO_LEN];

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char erom_version[ETHTOOL_EROMVERS_LEN];

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char reserved2[12];

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__u32 n_priv_flags;

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__u32 n_stats;

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__u32 testinfo_len;

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__u32 eedump_len;

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__u32 regdump_len;

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};

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#define SOPASS_MAX 6

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/**

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* struct ethtool_wolinfo - Wake-On-Lan configuration

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* @cmd: Command number = %ETHTOOL_GWOL or %ETHTOOL_SWOL

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* @supported: Bitmask of %WAKE_* flags for supported Wake-On-Lan modes.

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* Read-only.

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* @wolopts: Bitmask of %WAKE_* flags for enabled Wake-On-Lan modes.

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* @sopass: SecureOn(tm) password; meaningful only if %WAKE_MAGICSECURE

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* is set in @wolopts.

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*/

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struct ethtool_wolinfo {

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__u32 cmd;

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__u32 supported;

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__u32 wolopts;

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__u8 sopass[SOPASS_MAX];

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};

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/* for passing single values */

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struct ethtool_value {

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__u32 cmd;

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__u32 data;

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};

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#define PFC_STORM_PREVENTION_AUTO 0xffff

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#define PFC_STORM_PREVENTION_DISABLE 0

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enum tunable_id {

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ETHTOOL_ID_UNSPEC,

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ETHTOOL_RX_COPYBREAK,

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ETHTOOL_TX_COPYBREAK,

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ETHTOOL_PFC_PREVENTION_TOUT, /* timeout in msecs */

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ETHTOOL_TX_COPYBREAK_BUF_SIZE,

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/*

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* Add your fresh new tunable attribute above and remember to update

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* tunable_strings[] in net/ethtool/common.c

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*/

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__ETHTOOL_TUNABLE_COUNT,

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};

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enum tunable_type_id {

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ETHTOOL_TUNABLE_UNSPEC,

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ETHTOOL_TUNABLE_U8,

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ETHTOOL_TUNABLE_U16,

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ETHTOOL_TUNABLE_U32,

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ETHTOOL_TUNABLE_U64,

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ETHTOOL_TUNABLE_STRING,

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ETHTOOL_TUNABLE_S8,

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ETHTOOL_TUNABLE_S16,

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ETHTOOL_TUNABLE_S32,

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ETHTOOL_TUNABLE_S64,

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};

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struct ethtool_tunable {

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__u32 cmd;

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__u32 id;

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__u32 type_id;

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__u32 len;

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void *data[0];

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};

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#define DOWNSHIFT_DEV_DEFAULT_COUNT 0xff

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#define DOWNSHIFT_DEV_DISABLE 0

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/* Time in msecs after which link is reported as down

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* 0 = lowest time supported by the PHY

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* 0xff = off, link down detection according to standard

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*/

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#define ETHTOOL_PHY_FAST_LINK_DOWN_ON 0

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#define ETHTOOL_PHY_FAST_LINK_DOWN_OFF 0xff

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/* Energy Detect Power Down (EDPD) is a feature supported by some PHYs, where

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* the PHY's RX & TX blocks are put into a low-power mode when there is no

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* link detected (typically cable is un-plugged). For RX, only a minimal

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* link-detection is available, and for TX the PHY wakes up to send link pulses

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* to avoid any lock-ups in case the peer PHY may also be running in EDPD mode.

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*

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* Some PHYs may support configuration of the wake-up interval for TX pulses,

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* and some PHYs may support only disabling TX pulses entirely. For the latter

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* a special value is required (ETHTOOL_PHY_EDPD_NO_TX) so that this can be

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* configured from userspace (should the user want it).

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*

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* The interval units for TX wake-up are in milliseconds, since this should

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* cover a reasonable range of intervals:

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* - from 1 millisecond, which does not sound like much of a power-saver

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* - to ~65 seconds which is quite a lot to wait for a link to come up when

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* plugging a cable

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*/

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#define ETHTOOL_PHY_EDPD_DFLT_TX_MSECS 0xffff

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#define ETHTOOL_PHY_EDPD_NO_TX 0xfffe

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#define ETHTOOL_PHY_EDPD_DISABLE 0

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enum phy_tunable_id {

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ETHTOOL_PHY_ID_UNSPEC,

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ETHTOOL_PHY_DOWNSHIFT,

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ETHTOOL_PHY_FAST_LINK_DOWN,

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ETHTOOL_PHY_EDPD,

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/*

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* Add your fresh new phy tunable attribute above and remember to update

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* phy_tunable_strings[] in net/ethtool/common.c

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*/

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__ETHTOOL_PHY_TUNABLE_COUNT,

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};

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/**

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* struct ethtool_regs - hardware register dump

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* @cmd: Command number = %ETHTOOL_GREGS

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* @version: Dump format version. This is driver-specific and may

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* distinguish different chips/revisions. Drivers must use new

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* version numbers whenever the dump format changes in an

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* incompatible way.

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* @len: On entry, the real length of @data. On return, the number of

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* bytes used.

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* @data: Buffer for the register dump

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*

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* Users should use %ETHTOOL_GDRVINFO to find the maximum length of

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* a register dump for the interface. They must allocate the buffer

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* immediately following this structure.

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*/

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struct ethtool_regs {

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__u32 cmd;

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__u32 version;

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__u32 len;

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__u8 data[0];

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};

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/**

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* struct ethtool_eeprom - EEPROM dump

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* @cmd: Command number = %ETHTOOL_GEEPROM, %ETHTOOL_GMODULEEEPROM or

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* %ETHTOOL_SEEPROM

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* @magic: A 'magic cookie' value to guard against accidental changes.

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* The value passed in to %ETHTOOL_SEEPROM must match the value

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* returned by %ETHTOOL_GEEPROM for the same device. This is

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* unused when @cmd is %ETHTOOL_GMODULEEEPROM.

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* @offset: Offset within the EEPROM to begin reading/writing, in bytes

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* @len: On entry, number of bytes to read/write. On successful

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* return, number of bytes actually read/written. In case of

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* error, this may indicate at what point the error occurred.

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* @data: Buffer to read/write from

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*

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* Users may use %ETHTOOL_GDRVINFO or %ETHTOOL_GMODULEINFO to find

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* the length of an on-board or module EEPROM, respectively. They

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* must allocate the buffer immediately following this structure.

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*/

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struct ethtool_eeprom {

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__u32 cmd;

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__u32 magic;

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__u32 offset;

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__u32 len;

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__u8 data[0];

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};

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/**

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* struct ethtool_eee - Energy Efficient Ethernet information

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* @cmd: ETHTOOL_{G,S}EEE

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* @supported: Mask of %SUPPORTED_* flags for the speed/duplex combinations

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* for which there is EEE support.

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* @advertised: Mask of %ADVERTISED_* flags for the speed/duplex combinations

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* advertised as eee capable.

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* @lp_advertised: Mask of %ADVERTISED_* flags for the speed/duplex

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* combinations advertised by the link partner as eee capable.

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* @eee_active: Result of the eee auto negotiation.

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* @eee_enabled: EEE configured mode (enabled/disabled).

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* @tx_lpi_enabled: Whether the interface should assert its tx lpi, given

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* that eee was negotiated.

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* @tx_lpi_timer: Time in microseconds the interface delays prior to asserting

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* its tx lpi (after reaching 'idle' state). Effective only when eee

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* was negotiated and tx_lpi_enabled was set.

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* @reserved: Reserved for future use; see the note on reserved space.

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*/

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struct ethtool_eee {

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__u32 cmd;

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__u32 supported;

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__u32 advertised;

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__u32 lp_advertised;

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__u32 eee_active;

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__u32 eee_enabled;

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__u32 tx_lpi_enabled;

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__u32 tx_lpi_timer;

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__u32 reserved[2];

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};

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/**

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* struct ethtool_modinfo - plugin module eeprom information

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* @cmd: %ETHTOOL_GMODULEINFO

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* @type: Standard the module information conforms to %ETH_MODULE_SFF_xxxx

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* @eeprom_len: Length of the eeprom

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* @reserved: Reserved for future use; see the note on reserved space.

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*

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* This structure is used to return the information to

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* properly size memory for a subsequent call to %ETHTOOL_GMODULEEEPROM.

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* The type code indicates the eeprom data format

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*/

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struct ethtool_modinfo {

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__u32 cmd;

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__u32 type;

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__u32 eeprom_len;

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__u32 reserved[8];

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};

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/**

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* struct ethtool_coalesce - coalescing parameters for IRQs and stats updates

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* @cmd: ETHTOOL_{G,S}COALESCE

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* @rx_coalesce_usecs: How many usecs to delay an RX interrupt after

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* a packet arrives.

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* @rx_max_coalesced_frames: Maximum number of packets to receive

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* before an RX interrupt.

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* @rx_coalesce_usecs_irq: Same as @rx_coalesce_usecs, except that

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* this value applies while an IRQ is being serviced by the host.

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* @rx_max_coalesced_frames_irq: Same as @rx_max_coalesced_frames,

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* except that this value applies while an IRQ is being serviced

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* by the host.

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* @tx_coalesce_usecs: How many usecs to delay a TX interrupt after

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* a packet is sent.

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* @tx_max_coalesced_frames: Maximum number of packets to be sent

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* before a TX interrupt.

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* @tx_coalesce_usecs_irq: Same as @tx_coalesce_usecs, except that

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* this value applies while an IRQ is being serviced by the host.

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* @tx_max_coalesced_frames_irq: Same as @tx_max_coalesced_frames,

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* except that this value applies while an IRQ is being serviced

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* by the host.

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* @stats_block_coalesce_usecs: How many usecs to delay in-memory

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* statistics block updates. Some drivers do not have an

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* in-memory statistic block, and in such cases this value is

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* ignored. This value must not be zero.

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* @use_adaptive_rx_coalesce: Enable adaptive RX coalescing.

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* @use_adaptive_tx_coalesce: Enable adaptive TX coalescing.

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* @pkt_rate_low: Threshold for low packet rate (packets per second).

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* @rx_coalesce_usecs_low: How many usecs to delay an RX interrupt after

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* a packet arrives, when the packet rate is below @pkt_rate_low.

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* @rx_max_coalesced_frames_low: Maximum number of packets to be received

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* before an RX interrupt, when the packet rate is below @pkt_rate_low.

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* @tx_coalesce_usecs_low: How many usecs to delay a TX interrupt after

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* a packet is sent, when the packet rate is below @pkt_rate_low.

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* @tx_max_coalesced_frames_low: Maximum nuumber of packets to be sent before

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* a TX interrupt, when the packet rate is below @pkt_rate_low.

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* @pkt_rate_high: Threshold for high packet rate (packets per second).

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* @rx_coalesce_usecs_high: How many usecs to delay an RX interrupt after

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* a packet arrives, when the packet rate is above @pkt_rate_high.

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* @rx_max_coalesced_frames_high: Maximum number of packets to be received

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* before an RX interrupt, when the packet rate is above @pkt_rate_high.

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* @tx_coalesce_usecs_high: How many usecs to delay a TX interrupt after

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* a packet is sent, when the packet rate is above @pkt_rate_high.

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* @tx_max_coalesced_frames_high: Maximum number of packets to be sent before

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* a TX interrupt, when the packet rate is above @pkt_rate_high.

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* @rate_sample_interval: How often to do adaptive coalescing packet rate

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* sampling, measured in seconds. Must not be zero.

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*

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* Each pair of (usecs, max_frames) fields specifies that interrupts

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* should be coalesced until

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* (usecs > 0 && time_since_first_completion >= usecs) ||

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* (max_frames > 0 && completed_frames >= max_frames)

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*

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* It is illegal to set both usecs and max_frames to zero as this

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* would cause interrupts to never be generated. To disable

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* coalescing, set usecs = 0 and max_frames = 1.

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*

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* Some implementations ignore the value of max_frames and use the

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* condition time_since_first_completion >= usecs

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*

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* This is deprecated. Drivers for hardware that does not support

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* counting completions should validate that max_frames == !rx_usecs.

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*

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* Adaptive RX/TX coalescing is an algorithm implemented by some

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* drivers to improve latency under low packet rates and improve

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* throughput under high packet rates. Some drivers only implement

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* one of RX or TX adaptive coalescing. Anything not implemented by

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* the driver causes these values to be silently ignored.

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*

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* When the packet rate is below @pkt_rate_high but above

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* @pkt_rate_low (both measured in packets per second) the

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* normal {rx,tx}_* coalescing parameters are used.

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*/

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struct ethtool_coalesce {

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__u32 cmd;

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__u32 rx_coalesce_usecs;

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__u32 rx_max_coalesced_frames;

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__u32 rx_coalesce_usecs_irq;

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__u32 rx_max_coalesced_frames_irq;

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__u32 tx_coalesce_usecs;

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__u32 tx_max_coalesced_frames;

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__u32 tx_coalesce_usecs_irq;

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__u32 tx_max_coalesced_frames_irq;

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__u32 stats_block_coalesce_usecs;

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__u32 use_adaptive_rx_coalesce;

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__u32 use_adaptive_tx_coalesce;

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__u32 pkt_rate_low;

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__u32 rx_coalesce_usecs_low;

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__u32 rx_max_coalesced_frames_low;

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__u32 tx_coalesce_usecs_low;

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__u32 tx_max_coalesced_frames_low;

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__u32 pkt_rate_high;

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__u32 rx_coalesce_usecs_high;

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__u32 rx_max_coalesced_frames_high;

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__u32 tx_coalesce_usecs_high;

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__u32 tx_max_coalesced_frames_high;

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__u32 rate_sample_interval;

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