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)
 */

#ifndef _LINUX_ETHTOOL_H
#define _LINUX_ETHTOOL_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 */
	u32	reserved[4];
};

#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[16];
	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,
};

/* 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];
};

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);
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);
int ethtool_op_get_perm_addr(struct net_device *dev, 
			     struct ethtool_perm_addr *addr, u8 *data);
u32 ethtool_op_get_ufo(struct net_device *dev);
int ethtool_op_set_ufo(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 paramters
 * get_rx_csum: Report whether receive checksums are turned on or off
 * set_rx_csum: Turn receive checksum on or off
 * get_tx_csum: Report whether transmit checksums are turned on or off
 * set_tx_csum: Turn transmit checksums on or off
 * get_sg: Report whether scatter-gather is enabled
 * set_sg: Turn scatter-gather on or off
 * get_tso: Report whether TCP segmentation offload is enabled
 * set_tso: Turn TCP segmentation offload on or off
 * get_ufo: Report whether UDP fragmentation offload is enabled
 * set_ufo: Turn UDP fragmentation offload on or off
 * self_test: Run specified self-tests
 * get_strings: Return a set of strings that describe the requested objects 
 * phys_id: Identify the device
 * get_stats: Return statistics about the device
 * get_perm_addr: Gets the permanent hardware address
 * 
 * Description:
 *
 * get_settings:
 *	@get_settings is passed an &ethtool_cmd to fill in.  It returns
 *	an negative errno or zero.
 *
 * set_settings:
 *	@set_settings is passed an &ethtool_cmd and should attempt to set
 *	all the settings this device supports.  It may return an error value
 *	if something goes wrong (otherwise 0).
 *
 * get_eeprom:
 *	Should fill in the magic field.  Don't need to check len for zero
 *	or wraparound.  Fill in the data argument with the eeprom values
 *	from offset to offset + len.  Update len to the amount read.
 *	Returns an error or zero.
 *
 * set_eeprom:
 *	Should validate the magic field.  Don't need to check len for zero
 *	or wraparound.  Update len to the amount written.  Returns an error
 *	or zero.
 */
struct ethtool_ops {
	int	(*get_settings)(struct net_device *, struct ethtool_cmd *);
	int	(*set_settings)(struct net_device *, struct ethtool_cmd *);
	void	(*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
	int	(*get_regs_len)(struct net_device *);
	void	(*get_regs)(struct net_device *, struct ethtool_regs *, void *);
	void	(*get_wol)(struct net_device *, struct ethtool_wolinfo *);
	int	(*set_wol)(struct net_device *, struct ethtool_wolinfo *);
	u32	(*get_msglevel)(struct net_device *);
	void	(*set_msglevel)(struct net_device *, u32);
	int	(*nway_reset)(struct net_device *);
	u32	(*get_link)(struct net_device *);
	int