path: root/include/linux/ethtool.h

/*
 * ethtool.h: Defines for Linux ethtool.
 *
 * Copyright (C) 1998 David S. Miller (davem@redhat.com)
 * Copyright 2001 Jeff Garzik <jgarzik@pobox.com>
 * Portions Copyright 2001 Sun Microsystems (thockin@sun.com)
 * Portions Copyright 2002 Intel (eli.kupermann@intel.com,
 *                                christopher.leech@intel.com,
 *                                scott.feldman@intel.com)
 * Portions Copyright (C) Sun Microsystems 2008
 */

#ifndef _LINUX_ETHTOOL_H
#define _LINUX_ETHTOOL_H

#include <linux/types.h>

/* This should work for both 32 and 64 bit userland. */
struct ethtool_cmd {
	__u32	cmd;
	__u32	supported;	/* Features this interface supports */
	__u32	advertising;	/* Features this interface advertises */
	__u16	speed;		/* The forced speed, 10Mb, 100Mb, gigabit */
	__u8	duplex;		/* Duplex, half or full */
	__u8	port;		/* Which connector port */
	__u8	phy_address;
	__u8	transceiver;	/* Which transceiver to use */
	__u8	autoneg;	/* Enable or disable autonegotiation */
	__u32	maxtxpkt;	/* Tx pkts before generating tx int */
	__u32	maxrxpkt;	/* Rx pkts before generating rx int */
	__u16	speed_hi;
	__u16	reserved2;
	__u32	reserved[3];
};

static inline void ethtool_cmd_speed_set(struct ethtool_cmd *ep,
						__u32 speed)
{

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

static inline __u32 ethtool_cmd_speed(struct ethtool_cmd *ep)
{
	return (ep->speed_hi << 16) | ep->speed;
}

#define ETHTOOL_BUSINFO_LEN	32
/* these strings are set to whatever the driver author decides... */
struct ethtool_drvinfo {
	__u32	cmd;
	char	driver[32];	/* driver short name, "tulip", "eepro100" */
	char	version[32];	/* driver version string */
	char	fw_version[32];	/* firmware version string, if applicable */
	char	bus_info[ETHTOOL_BUSINFO_LEN];	/* Bus info for this IF. */
				/* For PCI devices, use pci_name(pci_dev). */
	char	reserved1[32];
	char	reserved2[12];
	__u32	n_priv_flags;	/* number of flags valid in ETHTOOL_GPFLAGS */
	__u32	n_stats;	/* number of u64's from ETHTOOL_GSTATS */
	__u32	testinfo_len;
	__u32	eedump_len;	/* Size of data from ETHTOOL_GEEPROM (bytes) */
	__u32	regdump_len;	/* Size of data from ETHTOOL_GREGS (bytes) */
};

#define SOPASS_MAX	6
/* wake-on-lan settings */
struct ethtool_wolinfo {
	__u32	cmd;
	__u32	supported;
	__u32	wolopts;
	__u8	sopass[SOPASS_MAX]; /* SecureOn(tm) password */
};

/* for passing single values */
struct ethtool_value {
	__u32	cmd;
	__u32	data;
};

/* for passing big chunks of data */
struct ethtool_regs {
	__u32	cmd;
	__u32	version; /* driver-specific, indicates different chips/revs */
	__u32	len; /* bytes */
	__u8	data[0];
};

/* for passing EEPROM chunks */
struct ethtool_eeprom {
	__u32	cmd;
	__u32	magic;
	__u32	offset; /* in bytes */
	__u32	len; /* in bytes */
	__u8	data[0];
};

/* for configuring coalescing parameters of chip */
struct ethtool_coalesce {
	__u32	cmd;	/* ETHTOOL_{G,S}COALESCE */

	/* How many usecs to delay an RX interrupt after
	 * a packet arrives.  If 0, only rx_max_coalesced_frames
	 * is used.
	 */
	__u32	rx_coalesce_usecs;

	/* How many packets to delay an RX interrupt after
	 * a packet arrives.  If 0, only rx_coalesce_usecs is
	 * used.  It is illegal to set both usecs and max frames
	 * to zero as this would cause RX interrupts to never be
	 * generated.
	 */
	__u32	rx_max_coalesced_frames;

	/* Same as above two parameters, except that these values
	 * apply while an IRQ is being serviced by the host.  Not
	 * all cards support this feature and the values are ignored
	 * in that case.
	 */
	__u32	rx_coalesce_usecs_irq;
	__u32	rx_max_coalesced_frames_irq;

	/* How many usecs to delay a TX interrupt after
	 * a packet is sent.  If 0, only tx_max_coalesced_frames
	 * is used.
	 */
	__u32	tx_coalesce_usecs;

	/* How many packets to delay a TX interrupt after
	 * a packet is sent.  If 0, only tx_coalesce_usecs is
	 * used.  It is illegal to set both usecs and max frames
	 * to zero as this would cause TX interrupts to never be
	 * generated.
	 */
	__u32	tx_max_coalesced_frames;

	/* Same as above two parameters, except that these values
	 * apply while an IRQ is being serviced by the host.  Not
	 * all cards support this feature and the values are ignored
	 * in that case.
	 */
	__u32	tx_coalesce_usecs_irq;
	__u32	tx_max_coalesced_frames_irq;

	/* How many usecs to delay in-memory statistics
	 * block updates.  Some drivers do not have an in-memory
	 * statistic block, and in such cases this value is ignored.
	 * This value must not be zero.
	 */
	__u32	stats_block_coalesce_usecs;

	/* Adaptive RX/TX coalescing is an algorithm implemented by
	 * some drivers to improve latency under low packet rates and
	 * improve throughput under high packet rates.  Some drivers
	 * only implement one of RX or TX adaptive coalescing.  Anything
	 * not implemented by the driver causes these values to be
	 * silently ignored.
	 */
	__u32	use_adaptive_rx_coalesce;
	__u32	use_adaptive_tx_coalesce;

	/* When the packet rate (measured in packets per second)
	 * is below pkt_rate_low, the {rx,tx}_*_low parameters are
	 * used.
	 */
	__u32	pkt_rate_low;
	__u32	rx_coalesce_usecs_low;
	__u32	rx_max_coalesced_frames_low;
	__u32	tx_coalesce_usecs_low;
	__u32	tx_max_coalesced_frames_low;

	/* When the packet rate is below pkt_rate_high but above
	 * pkt_rate_low (both measured in packets per second) the
	 * normal {rx,tx}_* coalescing parameters are used.
	 */

	/* When the packet rate is (measured in packets per second)
	 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
	 * used.
	 */
	__u32	pkt_rate_high;
	__u32	rx_coalesce_usecs_high;
	__u32	rx_max_coalesced_frames_high;
	__u32	tx_coalesce_usecs_high;
	__u32	tx_max_coalesced_frames_high;

	/* How often to do adaptive coalescing packet rate sampling,
	 * measured in seconds.  Must not be zero.
	 */
	__u32	rate_sample_interval;
};

/* for configuring RX/TX ring parameters */
struct ethtool_ringparam {
	__u32	cmd;	/* ETHTOOL_{G,S}RINGPARAM */

	/* Read only attributes.  These indicate the maximum number
	 * of pending RX/TX ring entries the driver will allow the
	 * user to set.
	 */
	__u32	rx_max_pending;
	__u32	rx_mini_max_pending;
	__u32	rx_jumbo_max_pending;
	__u32	tx_max_pending;

	/* Values changeable by the user.  The valid values are
	 * in the range 1 to the "*_max_pending" counterpart above.
	 */
	__u32	rx_pending;
	__u32	rx_mini_pending;
	__u32	rx_jumbo_pending;
	__u32	tx_pending;
};

/* for configuring link flow control parameters */
struct ethtool_pauseparam {
	__u32	cmd;	/* ETHTOOL_{G,S}PAUSEPARAM */

	/* If the link is being auto-negotiated (via ethtool_cmd.autoneg
	 * being true) the user may set 'autonet' here non-zero to have the
	 * pause parameters be auto-negotiated too.  In such a case, the
	 * {rx,tx}_pause values below determine what capabilities are
	 * advertised.
	 *
	 * If 'autoneg' is zero or the link is not being auto-negotiated,
	 * then {rx,tx}_pause force the driver to use/not-use pause
	 * flow control.
	 */
	__u32	autoneg;
	__u32	rx_pause;
	__u32	tx_pause;
};

#define ETH_GSTRING_LEN		32
enum ethtool_stringset {
	ETH_SS_TEST		= 0,
	ETH_SS_STATS,
	ETH_SS_PRIV_FLAGS,
};

/* for passing string sets for data tagging */
struct ethtool_gstrings {
	__u32	cmd;		/* ETHTOOL_GSTRINGS */
	__u32	string_set;	/* string set id e.c. ETH_SS_TEST, etc*/
	__u32	len;		/* number of strings in the string set */
	__u8	data[0];
};

enum ethtool_test_flags {
	ETH_TEST_FL_OFFLINE	= (1 << 0),	/* online / offline */
	ETH_TEST_FL_FAILED	= (1 << 1),	/* test passed / failed */
};

/* for requesting NIC test and getting results*/
struct ethtool_test {
	__u32	cmd;		/* ETHTOOL_TEST */
	__u32	flags;		/* ETH_TEST_FL_xxx */
	__u32	reserved;
	__u32	len;		/* result length, in number of u64 elements */
	__u64	data[0];
};

/* for dumping NIC-specific statistics */
struct ethtool_stats {
	__u32	cmd;		/* ETHTOOL_GSTATS */
	__u32	n_stats;	/* number of u64's being returned */
	__u64	data[0];
};

struct ethtool_perm_addr {
	__u32	cmd;		/* ETHTOOL_GPERMADDR */
	__u32	size;
	__u8	data[0];
};

/* boolean flags controlling per-interface behavior characteristics.
 * When reading, the flag indicates whether or not a certain behavior
 * is enabled/present.  When writing, the flag indicates whether
 * or not the driver should turn on (set) or off (clear) a behavior.
 *
 * Some behaviors may read-only (unconditionally absent or present).
 * If such is the case, return EINVAL in the set-flags operation if the
 * flag differs from the read-only value.
 */
enum ethtool_flags {
	ETH_FLAG_LRO		= (1 << 15),	/* LRO is enabled */
};

/* The following structures are for supporting RX network flow
 * classification configuration. Note, all multibyte fields, e.g.,
 * ip4src, ip4dst, psrc, pdst, spi, etc. are expected to be in network
 * byte order.
 */
struct ethtool_tcpip4_spec {
	__be32	ip4src;
	__be32	ip4dst;
	__be16	psrc;
	__be16	pdst;
	__u8    tos;
};

struct ethtool_ah_espip4_spec {
	__be32	ip4src;
	__be32	ip4dst;
	__be32	spi;
	__u8    tos;
};

struct ethtool_rawip4_spec {
	__be32	ip4src;
	__be32	ip4dst;
	__u8	hdata[64];
};

struct ethtool_ether_spec {
	__be16	ether_type;
	__u8	frame_size;
	__u8	eframe[16];
};

#define	ETH_RX_NFC_IP4	1
#define	ETH_RX_NFC_IP6	2

struct ethtool_usrip4_spec {
	__be32	ip4src;
	__be32	ip4dst;
	__be32	l4_4_bytes;
	__u8    tos;
	__u8    ip_ver;
	__u8    proto;
};

struct ethtool_rx_flow_spec {
	__u32		flow_type;
	union {
		struct ethtool_tcpip4_spec		tcp_ip4_spec;
		struct ethtool_tcpip4_spec		udp_ip4_spec;
		struct ethtool_tcpip4_spec		sctp_ip4_spec;
		struct ethtool_ah_espip4_spec		ah_ip4_spec;
		struct ethtool_ah_espip4_spec		esp_ip4_spec;
		struct ethtool_rawip4_spec		raw_ip4_spec;
		struct ethtool_ether_spec		ether_spec;
		struct ethtool_usrip4_spec		usr_ip4_spec;
		__u8					hdata[64];
	} h_u, m_u; /* entry, mask */
	__u64		ring_cookie;
	__u32		location;
};

struct ethtool_rxnfc {
	__u32				cmd;
	__u32				flow_type;
	/* The rx flow hash value or the rule DB size */
	__u64				data;
	struct ethtool_rx_flow_spec	fs;
	__u32				rule_cnt;
	__u32				rule_locs[0];
};

#ifdef __KERNEL__

struct net_device;

/* Some generic methods drivers may use in their ethtool_ops */
u32 ethtool_op_get_link(struct net_device *dev);
u32 ethtool_op_get_tx_csum(struct net_device *dev);
int ethtool_op_set_tx_csum(struct net_device *dev, u32 data);
int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data);
int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data);
u32 ethtool_op_get_sg(struct net_device *dev);
int ethtool_op_set_sg(struct net_device *dev, u32 data);
u32 ethtool_op_get_tso(struct net_device *dev);
int ethtool_op_set_tso(struct net_device *dev, u32 data);
u32 ethtool_op_get_ufo(struct net_device *dev);
int ethtool_op_set_ufo(struct net_device *dev, u32 data);
u32 ethtool_op_get_flags(struct net_device *dev);
int ethtool_op_set_flags(struct net_device *dev, u32 data);

/**
 * &ethtool_ops - Alter and report network device settings
 * get_settings: Get device-specific settings
 * set_settings: Set device-specific settings
 * get_drvinfo: Report driver information
 * get_regs: Get device registers
 * get_wol: Report whether Wake-on-Lan is enabled
 * set_wol: Turn Wake-on-Lan on or off
 * get_msglevel: Report driver message level
 * set_msglevel: Set driver message level
 * nway_reset: Restart autonegotiation
 * get_link: Get link status
 * get_eeprom: Read data from the device EEPROM
 * set_eeprom: Write data to the device EEPROM
 * get_coalesce: Get interrupt coalescing parameters
 * set_coalesce: Set interrupt coalescing parameters
 * get_ringparam: Report ring sizes
 * set_ringparam: Set ring sizes
 * get_pauseparam: Report pause parameters
 * set_pauseparam: Set pause parameters
 * get_rx_csum: Report whether receive checksums are turned on or off
 * set_rx_csum: Turn receive checksum on or off