ethtool.c

/*
 * ethtool.c: Linux ethernet device configuration tool.
 *
 * Copyright (C) 1998 David S. Miller (davem@dm.cobaltmicro.com)
 * Portions Copyright 2001 Sun Microsystems
 * Kernel 2.4 update Copyright 2001 Jeff Garzik <jgarzik@mandrakesoft.com>
 * Wake-on-LAN,natsemi,misc support by Tim Hockin <thockin@sun.com>
 * Portions Copyright 2002 Intel
 * do_test support by Eli Kupermann <eli.kupermann@intel.com>
 * ETHTOOL_PHYS_ID support by Chris Leech <christopher.leech@intel.com>
 * e1000 support by Scott Feldman <scott.feldman@intel.com>
 * e100 support by Wen Tao <wen-hwa.tao@intel.com>
 * amd8111e support by Reeja John <reeja.john@amd.com>
 * long arguments by Andi Kleen.
 *
 * TODO:
 *   * no-args => summary of each device (mii-tool style)
 *   * better man page (steal from mii-tool?)
 *   * fall back on SIOCMII* ioctl()s and possibly SIOCDEVPRIVATE*
 *   * abstract ioctls to allow for fallback modes of data gathering
 *   * symbolic names for msglvl bitmask
 */

#ifdef HAVE_CONFIG_H
#  include "ethtool-config.h"
#endif

#include <sys/types.h>
#include <string.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <net/if.h>

#include <linux/sockios.h>
#include "ethtool-util.h"

#ifndef SIOCETHTOOL
#define SIOCETHTOOL     0x8946
#endif
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#endif

static int parse_wolopts(char *optstr, u32 *data);
static char *unparse_wolopts(int wolopts);
static int parse_sopass(char *src, unsigned char *dest);
static int do_gdrv(int fd, struct ifreq *ifr);
static int do_gset(int fd, struct ifreq *ifr);
static int do_sset(int fd, struct ifreq *ifr);
static int do_gregs(int fd, struct ifreq *ifr);
static int do_nway_rst(int fd, struct ifreq *ifr);
static int do_geeprom(int fd, struct ifreq *ifr);
static int do_seeprom(int fd, struct ifreq *ifr);
static int do_test(int fd, struct ifreq *ifr);
static int do_phys_id(int fd, struct ifreq *ifr);
static int do_gpause(int fd, struct ifreq *ifr);
static int do_spause(int fd, struct ifreq *ifr);
static int do_gring(int fd, struct ifreq *ifr);
static int do_sring(int fd, struct ifreq *ifr);
static int do_gcoalesce(int fd, struct ifreq *ifr);
static int do_scoalesce(int fd, struct ifreq *ifr);
static int do_goffload(int fd, struct ifreq *ifr);
static int do_soffload(int fd, struct ifreq *ifr);
static int do_gstats(int fd, struct ifreq *ifr);

static enum {
	MODE_HELP = -1,
	MODE_GSET=0,
	MODE_SSET,
	MODE_GDRV,
	MODE_GREGS,
	MODE_NWAY_RST,
	MODE_GEEPROM,
	MODE_SEEPROM,
	MODE_TEST,
	MODE_PHYS_ID,
	MODE_GPAUSE,
	MODE_SPAUSE,
	MODE_GCOALESCE,
	MODE_SCOALESCE,
	MODE_GRING,
	MODE_SRING,
	MODE_GOFFLOAD,
	MODE_SOFFLOAD,
	MODE_GSTATS,
} mode = MODE_GSET;

static struct option { 
    char *srt, *lng;
    int Mode;
    char *help;
    char *opthelp; 
} args[] = {
    { "-s", "--change", MODE_SSET, "Change generic options",
		"		[ speed 10|100|1000 ]\n"
		"		[ duplex half|full ]\n"
		"		[ port tp|aui|bnc|mii|fibre ]\n"
		"		[ autoneg on|off ]\n"
		"		[ phyad %%d ]\n"
		"		[ xcvr internal|external ]\n"
		"		[ wol p|u|m|b|a|g|s|d... ]\n"
		"		[ sopass %%x:%%x:%%x:%%x:%%x:%%x ]\n"
		"		[ msglvl %%d ] \n" },
    { "-a", "--show-pause", MODE_GPAUSE, "Show pause options" },
    { "-A", "--pause", MODE_SPAUSE, "Set pause options",
      "		[ autoneg on|off ]\n"
      "		[ rx on|off ]\n"
      "		[ tx on|off ]\n" },
    { "-c", "--show-coalesce", MODE_GCOALESCE, "Show coalesce options" },
    { "-C", "--coalesce", MODE_SCOALESCE, "Set coalesce options",
		"		[adaptive-rx on|off]\n"
		"		[adaptive-tx on|off]\n"
		"		[rx-usecs N]\n"
		"		[rx-frames N]\n"
		"		[rx-usecs-irq N]\n"
		"		[rx-frames-irq N]\n"
		"		[tx-usecs N]\n"
		"		[tx-frames N]\n"
		"		[tx-usecs-irq N]\n"
		"		[tx-frames-irq N]\n"
		"		[stats-block-usecs N]\n"
		"		[pkt-rate-low N]\n"
		"		[rx-usecs-low N]\n"
		"		[rx-frames-low N]\n"
		"		[tx-usecs-low N]\n"
		"		[tx-frames-low N]\n"
		"		[pkt-rate-high N]\n"
		"		[rx-usecs-high N]\n"
		"		[rx-frames-high N]\n"
		"		[tx-usecs-high N]\n"
		"		[tx-frames-high N]\n"
	        "		[sample-interval N]\n" },
    { "-g", "--show-ring", MODE_GRING, "Query RX/TX ring parameters" },
    { "-G", "--set-ring", MODE_SRING, "Set RX/TX ring parameters",
		"		[ rx N ]\n"
		"		[ rx-mini N ]\n"
		"		[ rx-jumbo N ]\n"
	        "		[ tx N ]\n" },
    { "-k", "--show-offload", MODE_GOFFLOAD, "Get protocol offload information" },
    { "-K", "--offload", MODE_SOFFLOAD, "Set protocol offload",
		"		[ rx on|off ]\n"
		"		[ tx on|off ]\n"
		"		[ sg on|off ]\n"
	        "		[ tso on|off ]\n"
	        "		[ ufo on|off ]\n" },
    { "-i", "--driver", MODE_GDRV, "Show driver information" }, 
    { "-d", "--register-dump", MODE_GREGS, "Do a register dump" },
    { "-e", "--eeprom-dump", MODE_GEEPROM, "Do a EEPROM dump",
		"		[ raw on|off ]\n"
		"		[ offset N ]\n"
		"		[ length N ]\n" },
    { "-E", "--change-eeprom", MODE_SEEPROM, "Change bytes in device EEPROM",
		"		[ magic N ]\n"
		"		[ offset N ]\n"
		"		[ value N ]\n" }, 
    { "-r", "--negotiate", MODE_NWAY_RST, "Restart N-WAY negotation" },
    { "-p", "--identify", MODE_PHYS_ID, "Show visible port identification (e.g. blinking)",
                "               [ TIME-IN-SECONDS ]\n" },
    { "-t", "--test", MODE_TEST, "Execute adapter self test",
                "               [ online | offline ]\n" },
    { "-S", "--statistics", MODE_GSTATS, "Show adapter statistics" },
    { "-h", "--help", MODE_HELP, "Show this help" },
    {}
};


static void show_usage(int badarg)
{
	int i;
	fprintf(stderr, PACKAGE " version " VERSION "\n");
	fprintf(stderr,
		"Usage:\n"
		"ethtool DEVNAME\tDisplay standard information about device\n"); 
	for (i = 0; args[i].srt; i++) {
		fprintf(stderr, "        ethtool %s|%s DEVNAME\t%s\n%s",
			args[i].srt, args[i].lng,			
			args[i].help, 
			args[i].opthelp ? args[i].opthelp : "");
	}
	exit(badarg);
}

static char *devname = NULL;

static int goffload_changed = 0;
static int off_csum_rx_wanted = -1;
static int off_csum_tx_wanted = -1;
static int off_sg_wanted = -1;
static int off_tso_wanted = -1;
static int off_ufo_wanted = -1;

static struct ethtool_pauseparam epause;
static int gpause_changed = 0;
static int pause_autoneg_wanted = -1;
static int pause_rx_wanted = -1;
static int pause_tx_wanted = -1;

static struct ethtool_ringparam ering;
static int gring_changed = 0;
static int ring_rx_wanted = -1;
static int ring_rx_mini_wanted = -1;
static int ring_rx_jumbo_wanted = -1;
static int ring_tx_wanted = -1;

static struct ethtool_coalesce ecoal;
static int gcoalesce_changed = 0;
static int coal_stats_wanted = -1;
static int coal_adaptive_rx_wanted = -1;
static int coal_adaptive_tx_wanted = -1;
static int coal_sample_rate_wanted = -1;
static int coal_pkt_rate_low_wanted = -1;
static int coal_pkt_rate_high_wanted = -1;
static int coal_rx_usec_wanted = -1;
static int coal_rx_frames_wanted = -1;
static int coal_rx_usec_irq_wanted = -1;
static int coal_rx_frames_irq_wanted = -1;
static int coal_tx_usec_wanted = -1;
static int coal_tx_frames_wanted = -1;
static int coal_tx_usec_irq_wanted = -1;
static int coal_tx_frames_irq_wanted = -1;
static int coal_rx_usec_low_wanted = -1;
static int coal_rx_frames_low_wanted = -1;
static int coal_tx_usec_low_wanted = -1;
static int coal_tx_frames_low_wanted = -1;
static int coal_rx_usec_high_wanted = -1;
static int coal_rx_frames_high_wanted = -1;
static int coal_tx_usec_high_wanted = -1;
static int coal_tx_frames_high_wanted = -1;

static int speed_wanted = -1;
static int duplex_wanted = -1;
static int port_wanted = -1;
static int autoneg_wanted = -1;
static int phyad_wanted = -1;
static int xcvr_wanted = -1;
static int advertising_wanted = -1;
static int gset_changed = 0; /* did anything in GSET change? */
static u32  wol_wanted = 0;
static int wol_change = 0;
static u8 sopass_wanted[SOPASS_MAX];
static int sopass_change = 0;
static int gwol_changed = 0; /* did anything in GWOL change? */
static int msglvl_wanted = -1;
static int phys_id_time = 0;
static int gregs_changed = 0;
static int gregs_dump_raw = 0;
static int geeprom_changed = 0;
static int geeprom_dump_raw = 0;
static int geeprom_offset = 0;
static int geeprom_length = -1;
static int seeprom_changed = 0;
static int seeprom_magic = 0;
static int seeprom_offset = -1;
static int seeprom_value = 0;
static enum {
	ONLINE=0,
	OFFLINE,
} test_type = OFFLINE;

typedef enum {
	CMDL_NONE,
	CMDL_BOOL,
	CMDL_INT,
} cmdline_type_t;

struct cmdline_info {
	const char *name;
	cmdline_type_t type;
	void *wanted_val;
	void *ioctl_val;
};

static struct cmdline_info cmdline_gregs[] = {
	{ "raw", CMDL_BOOL, &gregs_dump_raw, NULL },
};

static struct cmdline_info cmdline_geeprom[] = {
	{ "offset", CMDL_INT, &geeprom_offset, NULL },
	{ "length", CMDL_INT, &geeprom_length, NULL },
	{ "raw", CMDL_BOOL, &geeprom_dump_raw, NULL },
};

static struct cmdline_info cmdline_seeprom[] = {
	{ "magic", CMDL_INT, &seeprom_magic, NULL },
	{ "offset", CMDL_INT, &seeprom_offset, NULL },
	{ "value", CMDL_INT, &seeprom_value, NULL },
};

static struct cmdline_info cmdline_offload[] = {
	{ "rx", CMDL_BOOL, &off_csum_rx_wanted, NULL },
	{ "tx", CMDL_BOOL, &off_csum_tx_wanted, NULL },
	{ "sg", CMDL_BOOL, &off_sg_wanted, NULL },
	{ "tso", CMDL_BOOL, &off_tso_wanted, NULL },
	{ "ufo", CMDL_BOOL, &off_ufo_wanted, NULL },
};

static struct cmdline_info cmdline_pause[] = {
	{ "autoneg", CMDL_BOOL, &pause_autoneg_wanted, &epause.autoneg },
	{ "rx", CMDL_BOOL, &pause_rx_wanted, &epause.rx_pause },
	{ "tx", CMDL_BOOL, &pause_tx_wanted, &epause.tx_pause },
};

static struct cmdline_info cmdline_ring[] = {
	{ "rx", CMDL_INT, &ring_rx_wanted, &ering.rx_pending },
	{ "rx-mini", CMDL_INT, &ring_rx_mini_wanted, &ering.rx_mini_pending },
	{ "rx-jumbo", CMDL_INT, &ring_rx_jumbo_wanted, &ering.rx_jumbo_pending },
	{ "tx", CMDL_INT, &ring_tx_wanted, &ering.tx_pending },
};

static struct cmdline_info cmdline_coalesce[] = {
	{ "adaptive-rx", CMDL_BOOL, &coal_adaptive_rx_wanted, &ecoal.use_adaptive_rx_coalesce },
	{ "adaptive-tx", CMDL_BOOL, &coal_adaptive_tx_wanted, &ecoal.use_adaptive_tx_coalesce },
	{ "sample-interval", CMDL_INT, &coal_sample_rate_wanted, &ecoal.rate_sample_interval },
	{ "stats-block-usecs", CMDL_INT, &coal_stats_wanted, &ecoal.stats_block_coalesce_usecs },
	{ "pkt-rate-low", CMDL_INT, &coal_pkt_rate_low_wanted, &ecoal.pkt_rate_low },
	{ "pkt-rate-high", CMDL_INT, &coal_pkt_rate_high_wanted, &ecoal.pkt_rate_high },
	{ "rx-usecs", CMDL_INT, &coal_rx_usec_wanted, &ecoal.rx_coalesce_usecs },
	{ "rx-frames", CMDL_INT, &coal_rx_frames_wanted, &ecoal.rx_max_coalesced_frames },
	{ "rx-usecs-irq", CMDL_INT, &coal_rx_usec_irq_wanted, &ecoal.rx_coalesce_usecs_irq },
	{ "rx-frames-irq", CMDL_INT, &coal_rx_frames_irq_wanted, &ecoal.rx_max_coalesced_frames_irq },
	{ "tx-usecs", CMDL_INT, &coal_tx_usec_wanted, &ecoal.tx_coalesce_usecs },
	{ "tx-frames", CMDL_INT, &coal_tx_frames_wanted, &ecoal.tx_max_coalesced_frames },
	{ "tx-usecs-irq", CMDL_INT, &coal_tx_usec_irq_wanted, &ecoal.tx_coalesce_usecs_irq },
	{ "tx-frames-irq", CMDL_INT, &coal_tx_frames_irq_wanted, &ecoal.tx_max_coalesced_frames_irq },
	{ "rx-usecs-low", CMDL_INT, &coal_rx_usec_low_wanted, &ecoal.rx_coalesce_usecs_low },
	{ "rx-frames-low", CMDL_INT, &coal_rx_frames_low_wanted, &ecoal.rx_max_coalesced_frames_low },
	{ "tx-usecs-low", CMDL_INT, &coal_tx_usec_low_wanted, &ecoal.tx_coalesce_usecs_low },
	{ "tx-frames-low", CMDL_INT, &coal_tx_frames_low_wanted, &ecoal.tx_max_coalesced_frames_low },
	{ "rx-usecs-high", CMDL_INT, &coal_rx_usec_high_wanted, &ecoal.rx_coalesce_usecs_high },
	{ "rx-frames-high", CMDL_INT, &coal_rx_frames_high_wanted, &ecoal.rx_max_coalesced_frames_high },
	{ "tx-usecs-high", CMDL_INT, &coal_tx_usec_high_wanted, &ecoal.tx_coalesce_usecs_high },
	{ "tx-frames-high", CMDL_INT, &coal_tx_frames_high_wanted, &ecoal.tx_max_coalesced_frames_high },
};

static void parse_generic_cmdline(int argc, char **argp,
				  int first_arg, int *changed,
				  struct cmdline_info *info,
				  unsigned int n_info)
{
	int i, idx, *p;

	for (i = first_arg; i < argc; i++) {
		for (idx = 0; idx < n_info; idx++) {
			if (!strcmp(info[idx].name, argp[i])) {
				*changed = 1;
				i += 1;
				if (i >= argc)
					show_usage(1);
				p = info[idx].wanted_val;
				if (info[idx].type == CMDL_BOOL) {
					if (!strcmp(argp[i], "on"))
						*p = 1;
					else if (!strcmp(argp[i], "off"))
						*p = 0;
					else
						show_usage(1);
				} else if (info[idx].type == CMDL_INT) {
					long v;
					v = strtol(argp[i], NULL, 0);
					if (v < 0)
						show_usage(1);
					*p = (int) v;
				} else {
					show_usage(1);
				}
			}
		}
	}
}

static void parse_cmdline(int argc, char **argp)
{
	int i, k;

	for (i = 1; i < argc; i++) {
		switch (i) {
		case 1:
			for (k = 0; args[k].srt; k++) 
				if (!strcmp(argp[i], args[k].srt) ||
				    !strcmp(argp[i], args[k].lng)) { 
					mode = args[k].Mode;
					break;
				} 
			if (mode == MODE_HELP || 
			    (!args[k].srt && argp[i][0] == '-'))
				show_usage(0);
			else
				devname = argp[i];
			break;
		case 2:
			if ((mode == MODE_SSET) ||
			    (mode == MODE_GDRV) ||
			    (mode == MODE_GREGS)||
			    (mode == MODE_NWAY_RST) ||
			    (mode == MODE_TEST) ||
			    (mode == MODE_GEEPROM) ||
			    (mode == MODE_SEEPROM) ||
			    (mode == MODE_GPAUSE) ||
			    (mode == MODE_SPAUSE) ||
			    (mode == MODE_GCOALESCE) ||
			    (mode == MODE_SCOALESCE) ||
			    (mode == MODE_GRING) ||
			    (mode == MODE_SRING) ||
			    (mode == MODE_GOFFLOAD) ||
			    (mode == MODE_SOFFLOAD) ||
			    (mode == MODE_GSTATS) ||
			    (mode == MODE_PHYS_ID)) {
				devname = argp[i];
				break;
			}
			/* fallthrough */
		case 3:
			if (mode == MODE_TEST) {
				if (!strcmp(argp[i], "online")) {
					test_type = ONLINE;
				} else if (!strcmp(argp[i], "offline")) {
					test_type = OFFLINE;
				} else {
					show_usage(1);
				}
				break;
			} else if (mode == MODE_PHYS_ID) {
				phys_id_time = strtol(argp[i], NULL, 0);
				if (phys_id_time < 0)
					show_usage(1);
				break;
			}
			/* fallthrough */
		default:
			if (mode == MODE_GREGS) {
				parse_generic_cmdline(argc, argp, i,
					&gregs_changed,
					cmdline_gregs,
					ARRAY_SIZE(cmdline_gregs));
				i = argc;
				break;
			}
			if (mode == MODE_GEEPROM) {
				parse_generic_cmdline(argc, argp, i,
					&geeprom_changed,
					cmdline_geeprom,
					ARRAY_SIZE(cmdline_geeprom));
				i = argc;
				break;
			}
			if (mode == MODE_SEEPROM) {
				parse_generic_cmdline(argc, argp, i,
					&seeprom_changed,
					cmdline_seeprom,
					ARRAY_SIZE(cmdline_seeprom));
				i = argc;
				break;
			}
			if (mode == MODE_SPAUSE) {
				parse_generic_cmdline(argc, argp, i,
					&gpause_changed,
			      		cmdline_pause,
			      		ARRAY_SIZE(cmdline_pause));
				i = argc;
				break;
			}
			if (mode == MODE_SRING) {
				parse_generic_cmdline(argc, argp, i,
					&gring_changed,
			      		cmdline_ring,
			      		ARRAY_SIZE(cmdline_ring));
				i = argc;
				break;
			}
			if (mode == MODE_SCOALESCE) {
				parse_generic_cmdline(argc, argp, i,
					&gcoalesce_changed,
			      		cmdline_coalesce,
			      		ARRAY_SIZE(cmdline_coalesce));
				i = argc;
				break;
			}
			if (mode == MODE_SOFFLOAD) {
				parse_generic_cmdline(argc, argp, i,
					&goffload_changed,
			      		cmdline_offload,
			      		ARRAY_SIZE(cmdline_offload));
				i = argc;
				break;
			}
			if (mode != MODE_SSET)
				show_usage(1);
			if (!strcmp(argp[i], "speed")) {
				gset_changed = 1;
				i += 1;
				if (i >= argc)
					show_usage(1);
				if (!strcmp(argp[i], "10"))
					speed_wanted = SPEED_10;
				else if (!strcmp(argp[i], "100"))
					speed_wanted = SPEED_100;
				else if (!strcmp(argp[i], "1000"))
					speed_wanted = SPEED_1000;
				else
					show_usage(1);
				break;
			} else if (!strcmp(argp[i], "duplex")) {
				gset_changed = 1;
				i += 1;
				if (i >= argc)
					show_usage(1);
				if (!strcmp(argp[i], "half"))
					duplex_wanted = DUPLEX_HALF;
				else if (!strcmp(argp[i], "full"))
					duplex_wanted = DUPLEX_FULL;
				else
					show_usage(1);
				break;
			} else if (!strcmp(argp[i], "port")) {
				gset_changed = 1;
				i += 1;
				if (i >= argc)
					show_usage(1);
				if (!strcmp(argp[i], "tp"))
					port_wanted = PORT_TP;
				else if (!strcmp(argp[i], "aui"))
					port_wanted = PORT_AUI;
				else if (!strcmp(argp[i], "bnc"))
					port_wanted = PORT_BNC;
				else if (!strcmp(argp[i], "mii"))
					port_wanted = PORT_MII;
				else if (!strcmp(argp[i], "fibre"))
					port_wanted = PORT_FIBRE;
				else
					show_usage(1);
				break;
			} else if (!strcmp(argp[i], "autoneg")) {
				i += 1;
				if (i >= argc)
					show_usage(1);
				if (!strcmp(argp[i], "on")) {
					gset_changed = 1;
					autoneg_wanted = AUTONEG_ENABLE;
				} else if (!strcmp(argp[i], "off")) {
					gset_changed = 1;
					autoneg_wanted = AUTONEG_DISABLE;
				} else {
					show_usage(1);
				}
				break;
			} else if (!strcmp(argp[i], "phyad")) {
				gset_changed = 1;
				i += 1;
				if (i >= argc)
					show_usage(1);
				phyad_wanted = strtol(argp[i], NULL, 0);
				if (phyad_wanted < 0)
					show_usage(1);
				break;
			} else if (!strcmp(argp[i], "xcvr")) {
				gset_changed = 1;
				i += 1;
				if (i >= argc)
					show_usage(1);
				if (!strcmp(argp[i], "internal"))
					xcvr_wanted = XCVR_INTERNAL;
				else if (!strcmp(argp[i], "external"))
					xcvr_wanted = XCVR_EXTERNAL;
				else
					show_usage(1);
				break;
			} else if (!strcmp(argp[i], "wol")) {
				gwol_changed = 1;
				i++;
				if (i >= argc)
					show_usage(1);
				if (parse_wolopts(argp[i], &wol_wanted) < 0)
					show_usage(1);
				wol_change = 1;
				break;
			} else if (!strcmp(argp[i], "sopass")) {
				gwol_changed = 1;
				i++;
				if (i >= argc)
					show_usage(1);
				if (parse_sopass(argp[i], sopass_wanted) < 0)
					show_usage(1);
				sopass_change = 1;
				break;
			} else if (!strcmp(argp[i], "msglvl")) {
				i++;
				if (i >= argc)
					show_usage(1);
				msglvl_wanted = strtol(argp[i], NULL, 0);
				if (msglvl_wanted < 0)
					show_usage(1);
				break;
			}
			show_usage(1);
		}
	}

	if (autoneg_wanted == AUTONEG_ENABLE){
		if (speed_wanted == SPEED_10 && duplex_wanted == DUPLEX_HALF)
			advertising_wanted = ADVERTISED_10baseT_Half;
		else if (speed_wanted == SPEED_10 &&
			 duplex_wanted == DUPLEX_FULL)
			advertising_wanted = ADVERTISED_10baseT_Full;
		else if (speed_wanted == SPEED_100 &&
			 duplex_wanted == DUPLEX_HALF)
			advertising_wanted = ADVERTISED_100baseT_Half;
		else if (speed_wanted == SPEED_100 &&
			 duplex_wanted == DUPLEX_FULL)
			advertising_wanted = ADVERTISED_100baseT_Full;
		else if (speed_wanted == SPEED_1000 &&
			 duplex_wanted == DUPLEX_HALF)
			advertising_wanted = ADVERTISED_1000baseT_Half;
		else if (speed_wanted == SPEED_1000 &&
			 duplex_wanted == DUPLEX_FULL)
			advertising_wanted = ADVERTISED_1000baseT_Full;
		else
			/* auto negotiate without forcing,
			 * all supported speed will be assigned in do_sset()
			 */
			advertising_wanted = 0;

	}

	if (devname == NULL) {
		show_usage(1);
	}
}

static void dump_supported(struct ethtool_cmd *ep)
{
	u_int32_t mask = ep->supported;
	int did1;

	fprintf(stdout, "	Supported ports: [ ");
	if (mask & SUPPORTED_TP)
		fprintf(stdout, "TP ");
	if (mask & SUPPORTED_AUI)
		fprintf(stdout, "AUI ");
	if (mask & SUPPORTED_BNC)
		fprintf(stdout, "BNC ");
	if (mask & SUPPORTED_MII)
		fprintf(stdout, "MII ");
	if (mask & SUPPORTED_FIBRE)
		fprintf(stdout, "FIBRE ");
	fprintf(stdout, "]\n");

	fprintf(stdout, "	Supported link modes:   ");
	did1 = 0;
	if (mask & SUPPORTED_10baseT_Half) {
		did1++; fprintf(stdout, "10baseT/Half ");
	}
	if (mask & SUPPORTED_10baseT_Full) {
		did1++; fprintf(stdout, "10baseT/Full ");
	}
	if (did1 && (mask & (SUPPORTED_100baseT_Half|SUPPORTED_100baseT_Full))) {
		fprintf(stdout, "\n");
		fprintf(stdout, "	                        ");
	}
	if (mask & SUPPORTED_100baseT_Half) {
		did1++; fprintf(stdout, "100baseT/Half ");
	}
	if (mask & SUPPORTED_100baseT_Full) {
		did1++; fprintf(stdout, "100baseT/Full ");
	}
	if (did1 && (mask & (SUPPORTED_1000baseT_Half|SUPPORTED_1000baseT_Full))) {
		fprintf(stdout, "\n");
		fprintf(stdout, "	                        ");
	}
	if (mask & SUPPORTED_1000baseT_Half) {
		did1++; fprintf(stdout, "1000baseT/Half ");
	}
	if (mask & SUPPORTED_1000baseT_Full) {
		did1++; fprintf(stdout, "1000baseT/Full ");
	}
	fprintf(stdout, "\n");

	fprintf(stdout, "	Supports auto-negotiation: ");
	if (mask & SUPPORTED_Autoneg)
		fprintf(stdout, "Yes\n");
	else
		fprintf(stdout, "No\n");
}

static void dump_advertised(struct ethtool_cmd *ep)
{
	u_int32_t mask = ep->advertising;
	int did1;

	fprintf(stdout, "	Advertised link modes:  ");
	did1 = 0;
	if (mask & ADVERTISED_10baseT_Half) {
		did1++; fprintf(stdout, "10baseT/Half ");
	}
	if (mask & ADVERTISED_10baseT_Full) {
		did1++; fprintf(stdout, "10baseT/Full ");
	}
	if (did1 && (mask & (ADVERTISED_100baseT_Half|ADVERTISED_100baseT_Full))) {
		fprintf(stdout, "\n");
		fprintf(stdout, "	                        ");
	}
	if (mask & ADVERTISED_100baseT_Half) {
		did1++; fprintf(stdout, "100baseT/Half ");
	}
	if (mask & ADVERTISED_100baseT_Full) {
		did1++; fprintf(stdout, "100baseT/Full ");
	}
	if (did1 && (mask & (ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full))) {
		fprintf(stdout, "\n");
		fprintf(stdout, "	                        ");
	}
	if (mask & ADVERTISED_1000baseT_Half) {
		did1++; fprintf(stdout, "1000baseT/Half ");
	}
	if (mask & ADVERTISED_1000baseT_Full) {
		did1++; fprintf(stdout, "1000baseT/Full ");
	}
	if (did1 == 0)
		 fprintf(stdout, "Not reported");
	fprintf(stdout, "\n");

	fprintf(stdout, "	Advertised auto-negotiation: ");
	if (mask & ADVERTISED_Autoneg)
		fprintf(stdout, "Yes\n");
	else
		fprintf(stdout, "No\n");
}

static int dump_ecmd(struct ethtool_cmd *ep)
{
	dump_supported(ep);
	dump_advertised(ep);

	fprintf(stdout, "	Speed: ");
	switch (ep->speed) {
	case SPEED_10:
		fprintf(stdout, "10Mb/s\n");
		break;
	case SPEED_100:
		fprintf(stdout, "100Mb/s\n");
		break;
	case SPEED_1000:
		fprintf(stdout, "1000Mb/s\n");
		break;
	default:
		fprintf(stdout, "Unknown! (%i)\n", ep->speed);
		break;
	};

	fprintf(stdout, "	Duplex: ");
	switch (ep->duplex) {
	case DUPLEX_HALF:
		fprintf(stdout, "Half\n");
		break;
	case DUPLEX_FULL:
		fprintf(stdout, "Full\n");
		break;
	default:
		fprintf(stdout, "Unknown! (%i)\n", ep->duplex);
		break;
	};

	fprintf(stdout, "	Port: ");
	switch (ep->port) {
	case PORT_TP:
		fprintf(stdout, "Twisted Pair\n");
		break;
	case PORT_AUI:
		fprintf(stdout, "AUI\n");
		break;
	case PORT_BNC:
		fprintf(stdout, "BNC\n");
		break;
	case PORT_MII:
		fprintf(stdout, "MII\n");
		break;
	case PORT_FIBRE:
		fprintf(stdout, "FIBRE\n");
		break;
	default:
		fprintf(stdout, "Unknown! (%i)\n", ep->port);
		break;
	};

	fprintf(stdout, "	PHYAD: %d\n", ep->phy_address);
	fprintf(stdout, "	Transceiver: ");
	switch (ep->transceiver) {
	case XCVR_INTERNAL:
		fprintf(stdout, "internal\n");
		break;
	case XCVR_EXTERNAL:
		fprintf(stdout, "external\n");
		break;
	default:
		fprintf(stdout, "Unknown!\n");
		break;
	};

	fprintf(stdout, "	Auto-negotiation: %s\n",
		(ep->autoneg == AUTONEG_DISABLE) ?
		"off" : "on");
	return 0;
}

static int dump_drvinfo(struct ethtool_drvinfo *info)
{
	fprintf(stdout,
		"driver: %s\n"
		"version: %s\n"
		"firmware-version: %s\n"
		"bus-info: %s\n",
		info->driver,
		info->version,
		info->fw_version,
		info->bus_info);

	return 0;
}

static int dump_wol(struct ethtool_wolinfo *wol)
{
	fprintf(stdout, "	Supports Wake-on: %s\n",
		unparse_wolopts(wol->supported));
	fprintf(stdout, "	Wake-on: %s\n",
		unparse_wolopts(wol->wolopts));
	if (wol->supported & WAKE_MAGICSECURE) {
		int i;
		int delim = 0;
		fprintf(stdout, "        SecureOn password: ");
		for (i = 0; i < SOPASS_MAX; i++) {
			fprintf(stdout, "%s%02x", delim?":":"", wol->sopass[i]);
			delim=1;
		}
		fprintf(stdout, "\n");
	}

	return 0;
}

static int parse_wolopts(char *optstr, u32 *data)
{
	*data = 0;
	while (*optstr) {
		switch (*optstr) {
			case 'p':
				*data |= WAKE_PHY;
				break;
			case 'u':
				*data |= WAKE_UCAST;
				break;
			case 'm':
				*data |= WAKE_MCAST;
				break;
			case 'b':
				*data |= WAKE_BCAST;
				break;
			case 'a':
				*data |= WAKE_ARP;
				break;
			case 'g':
				*data |= WAKE_MAGIC;
				break;
			case 's':
				*data |= WAKE_MAGICSECURE;
				break;
			case 'd':
				*data = 0;
				break;
			default:
				return -1;
		}
		optstr++;
	}
	return 0;
}

static char *unparse_wolopts(int wolopts)
{
	static char buf[16];
	char *p = buf;

	memset(buf, 0, sizeof(buf));

	if (wolopts) {
		if (wolopts & WAKE_PHY)
			*p++ = 'p';
		if (wolopts & WAKE_UCAST)
			*p++ = 'u';
		if (wolopts & WAKE_MCAST)
			*p++ = 'm';
		if (wolopts & WAKE_BCAST)
			*p++ = 'b';
		if (wolopts & WAKE_ARP)
			*p++ = 'a';
		if (wolopts & WAKE_MAGIC)
			*p++ = 'g';
		if (wolopts & WAKE_MAGICSECURE)
			*p++ = 's';
	} else {
		*p = 'd';
	}

	return buf;
}

static int parse_sopass(char *src, unsigned char *dest)
{
	int count;
	int i;
	int buf[SOPASS_MAX];

	count = sscanf(src, "%2x:%2x:%2x:%2x:%2x:%2x",
		&buf[0], &buf[1], &buf[2], &buf[3], &buf[4], &buf[5]);
	if (count != SOPASS_MAX) {
		return -1;
	}

	for (i = 0; i < count; i++) {
		dest[i] = buf[i];
	}
	return 0;
}

static struct {
	const char *name;
	int (*func)(struct ethtool_drvinfo *info, struct ethtool_regs *regs);

} driver_list[] = {
	{ "8139cp", realtek_dump_regs },
	{ "8139too", realtek_dump_regs },
	{ "r8169", realtek_dump_regs },
	{ "de2104x", de2104x_dump_regs },
	{ "e1000", e1000_dump_regs },
	{ "natsemi", natsemi_dump_regs },
	{ "e100", e100_dump_regs },
	{ "amd8111e", amd8111e_dump_regs },
	{ "pcnet32", pcnet32_dump_regs },
	{ "fec_8xx", fec_8xx_dump_regs },
	{ "ibm_emac", ibm_emac_dump_regs },
	{ "tg3", tg3_dump_regs },
};

static int dump_regs(struct ethtool_drvinfo *info, struct ethtool_regs *regs)
{
	int i;

	if (gregs_dump_raw) {
		fwrite(regs->data, regs->len, 1, stdout);
		return 0;
	}

	for (i = 0; i < ARRAY_SIZE(driver_list); i++)
		if (!strncmp(driver_list[i].name, info->driver,
			     ETHTOOL_BUSINFO_LEN))
			return driver_list[i].func(info, regs);

	fprintf(stdout, "Offset\tValues\n");
	fprintf(stdout, "--------\t-----");
	for (i = 0; i < regs->len; i++) {
		if (i%16 == 0)
			fprintf(stdout, "\n%03x:\t", i);
		fprintf(stdout, " %02x", regs->data[i]);
	}
	fprintf(stdout, "\n\n");
	return 0;
}

static int dump_eeprom(struct ethtool_drvinfo *info, struct ethtool_eeprom *ee)
{
	int i;

	if (geeprom_dump_raw) {
		fwrite(ee->data, 1, ee->len, stdout);
		return 0;
	}

	if (!strncmp("natsemi", info->driver, ETHTOOL_BUSINFO_LEN)) {
		return natsemi_dump_eeprom(info, ee);
	} else if (!strncmp("tg3", info->driver, ETHTOOL_BUSINFO_LEN)) {
		return tg3_dump_eeprom(info, ee);
	}

	fprintf(stdout, "Offset\t\tValues\n");
	fprintf(stdout, "------\t\t------");
	for (i = 0; i < ee->len; i++) {
		if(!(i%16)) fprintf(stdout, "\n0x%04x\t\t", i + ee->offset);
		fprintf(stdout, "%02x ", ee->data[i]);
	}
	fprintf(stdout, "\n");
	return 0;
}

static int dump_test(struct ethtool_drvinfo *info, struct ethtool_test *test,
		      struct ethtool_gstrings *strings)
{
	int i, rc;

	rc = test->flags & ETH_TEST_FL_FAILED;
	fprintf(stdout, "The test result is %s\n", rc ? "FAIL" : "PASS");

	if (info->testinfo_len)
		fprintf(stdout, "The test extra info:\n");

	for (i = 0; i < info->testinfo_len; i++) {
		fprintf(stdout, "%s\t %d\n",
			(char *)(strings->data + i * ETH_GSTRING_LEN),
			(u32) test->data[i]);
	}

	fprintf(stdout, "\n");
	return rc;
}

static int dump_pause(void)
{
	fprintf(stdout,
		"Autonegotiate:	%s\n"
		"RX:		%s\n"
		"TX:		%s\n",
		epause.autoneg ? "on" : "off",
		epause.rx_pause ? "on" : "off",
		epause.tx_pause ? "on" : "off");

	fprintf(stdout, "\n");
	return 0;
}

static int dump_ring(void)
{
	fprintf(stdout,
		"Pre-set maximums:\n"
		"RX:		%u\n"
		"RX Mini:	%u\n"
		"RX Jumbo:	%u\n"
		"TX:		%u\n",
		ering.rx_max_pending,
		ering.rx_mini_max_pending,
		ering.rx_jumbo_max_pending,
		ering.tx_max_pending);

	fprintf(stdout,
		"Current hardware settings:\n"
		"RX:		%u\n"
		"RX Mini:	%u\n"
		"RX Jumbo:	%u\n"
		"TX:		%u\n",
		ering.rx_pending,
		ering.rx_mini_pending,
		ering.rx_jumbo_pending,
		ering.tx_pending);

	fprintf(stdout, "\n");
	return 0;
}

static int dump_coalesce(void)
{
	fprintf(stdout, "Adaptive RX: %s  TX: %s\n",
		ecoal.use_adaptive_rx_coalesce ? "on" : "off",
		ecoal.use_adaptive_tx_coalesce ? "on" : "off");

	fprintf(stdout,
		"stats-block-usecs: %u\n"
		"sample-interval: %u\n"
		"pkt-rate-low: %u\n"
		"pkt-rate-high: %u\n"
		"\n"
		"rx-usecs: %u\n"
		"rx-frames: %u\n"
		"rx-usecs-irq: %u\n"
		"rx-frames-irq: %u\n"
		"\n"
		"tx-usecs: %u\n"
		"tx-frames: %u\n"
		"tx-usecs-irq: %u\n"
		"tx-frames-irq: %u\n"
		"\n"
		"rx-usecs-low: %u\n"
		"rx-frame-low: %u\n"
		"tx-usecs-low: %u\n"
		"tx-frame-low: %u\n"
		"\n"
		"rx-usecs-high: %u\n"
		"rx-frame-high: %u\n"
		"tx-usecs-high: %u\n"
		"tx-frame-high: %u\n"
		"\n",
		ecoal.stats_block_coalesce_usecs,
		ecoal.rate_sample_interval,
		ecoal.pkt_rate_low,
		ecoal.pkt_rate_high,

		ecoal.rx_coalesce_usecs,
		ecoal.rx_max_coalesced_frames,
		ecoal.rx_coalesce_usecs_irq,
		ecoal.rx_max_coalesced_frames_irq,

		ecoal.tx_coalesce_usecs,
		ecoal.tx_max_coalesced_frames,
		ecoal.tx_coalesce_usecs_irq,
		ecoal.tx_max_coalesced_frames_irq,

		ecoal.rx_coalesce_usecs_low,
		ecoal.rx_max_coalesced_frames_low,
		ecoal.tx_coalesce_usecs_low,
		ecoal.tx_max_coalesced_frames_low,

		ecoal.rx_coalesce_usecs_high,
		ecoal.rx_max_coalesced_frames_high,
		ecoal.tx_coalesce_usecs_high,
		ecoal.tx_max_coalesced_frames_high);

	return 0;
}

static int dump_offload (int rx, int tx, int sg, int tso, int ufo)
{
	fprintf(stdout,
		"rx-checksumming: %s\n"
		"tx-checksumming: %s\n"
		"scatter-gather: %s\n"
		"tcp segmentation offload: %s\n"
		"udp fragmentation offload: %s\n",
		rx ? "on" : "off",
		tx ? "on" : "off",
		sg ? "on" : "off",
		tso ? "on" : "off",
		ufo ? "on" : "off");

	return 0;
}

static int doit(void)
{
	struct ifreq ifr;
	int fd;

	/* Setup our control structures. */
	memset(&ifr, 0, sizeof(ifr));
	strcpy(ifr.ifr_name, devname);

	/* Open control socket. */
	fd = socket(AF_INET, SOCK_DGRAM, 0);
	if (fd < 0) {
		perror("Cannot get control socket");
		return 70;
	}

	/* all of these are expected to populate ifr->ifr_data as needed */
	if (mode == MODE_GDRV) {
		return do_gdrv(fd, &ifr);
	} else if (mode == MODE_GSET) {
		return do_gset(fd, &ifr);
	} else if (mode == MODE_SSET) {
		return do_sset(fd, &ifr);
	} else if (mode == MODE_GREGS) {
		return do_gregs(fd, &ifr);
	} else if (mode == MODE_NWAY_RST) {
		return do_nway_rst(fd, &ifr);
	} else if (mode == MODE_GEEPROM) {
		return do_geeprom(fd, &ifr);
	} else if (mode == MODE_SEEPROM) {
		return do_seeprom(fd, &ifr);
	} else if (mode == MODE_TEST) {
		return do_test(fd, &ifr);
	} else if (mode == MODE_PHYS_ID) {
		return do_phys_id(fd, &ifr);
	} else if (mode == MODE_GPAUSE) {
		return do_gpause(fd, &ifr);
	} else if (mode == MODE_SPAUSE) {
		return do_spause(fd, &ifr);
	} else if (mode == MODE_GCOALESCE) {
		return do_gcoalesce(fd, &ifr);
	} else if (mode == MODE_SCOALESCE) {
		return do_scoalesce(fd, &ifr);
	} else if (mode == MODE_GRING) {
		return do_gring(fd, &ifr);
	} else if (mode == MODE_SRING) {
		return do_sring(fd, &ifr);
	} else if (mode == MODE_GOFFLOAD) {
		return do_goffload(fd, &ifr);
	} else if (mode == MODE_SOFFLOAD) {
		return do_soffload(fd, &ifr);
	} else if (mode == MODE_GSTATS) {
		return do_gstats(fd, &ifr);
	}

	return 69;
}

static int do_gdrv(int fd, struct ifreq *ifr)
{
	int err;
	struct ethtool_drvinfo drvinfo;

	drvinfo.cmd = ETHTOOL_GDRVINFO;
	ifr->ifr_data = (caddr_t)&drvinfo;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot get driver information");
		return 71;
	}
	return dump_drvinfo(&drvinfo);
}

static int do_gpause(int fd, struct ifreq *ifr)
{
	int err;

	fprintf(stdout, "Pause parameters for %s:\n", devname);

	epause.cmd = ETHTOOL_GPAUSEPARAM;
	ifr->ifr_data = (caddr_t)&epause;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err == 0) {
		err = dump_pause();
		if (err)
			return err;
	} else {
		perror("Cannot get device pause settings");
		return 76;
	}

	return 0;
}

static void do_generic_set1(struct cmdline_info *info, int *changed_out)
{
	int wanted, *v1, *v2;

	v1 = info->wanted_val;
	wanted = *v1;

	if (wanted < 0)
		return;

	v2 = info->ioctl_val;
	if (wanted == *v2) {
		fprintf(stderr, "%s unmodified, ignoring\n", info->name);
	} else {
		*v2 = wanted;
		*changed_out = 1;
	}
}

static void do_generic_set(struct cmdline_info *info,
			   unsigned int n_info,
			   int *changed_out)
{
	unsigned int i;

	for (i = 0; i < n_info; i++)
		do_generic_set1(&info[i], changed_out);
}

static int do_spause(int fd, struct ifreq *ifr)
{
	int err, changed = 0;

	epause.cmd = ETHTOOL_GPAUSEPARAM;
	ifr->ifr_data = (caddr_t)&epause;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err) {
		perror("Cannot get device pause settings");
		return 77;
	}

	do_generic_set(cmdline_pause, ARRAY_SIZE(cmdline_pause), &changed);

	if (!changed) {
		fprintf(stderr, "no pause parameters changed, aborting\n");
		return 78;
	}

	epause.cmd = ETHTOOL_SPAUSEPARAM;
	ifr->ifr_data = (caddr_t)&epause;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err) {
		perror("Cannot set device pause parameters");
		return 79;
	}

	return 0;
}

static int do_sring(int fd, struct ifreq *ifr)
{
	int err, changed = 0;

	ering.cmd = ETHTOOL_GRINGPARAM;
	ifr->ifr_data = (caddr_t)&ering;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err) {
		perror("Cannot get device ring settings");
		return 76;
	}

	do_generic_set(cmdline_ring, ARRAY_SIZE(cmdline_ring), &changed);

	if (!changed) {
		fprintf(stderr, "no ring parameters changed, aborting\n");
		return 80;
	}

	ering.cmd = ETHTOOL_SRINGPARAM;
	ifr->ifr_data = (caddr_t)&ering;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err) {
		perror("Cannot set device ring parameters");
		return 81;
	}

	return 0;
}

static int do_gring(int fd, struct ifreq *ifr)
{
	int err;

	fprintf(stdout, "Ring parameters for %s:\n", devname);

	ering.cmd = ETHTOOL_GRINGPARAM;
	ifr->ifr_data = (caddr_t)&ering;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err == 0) {
		err = dump_ring();
		if (err)
			return err;
	} else {
		perror("Cannot get device ring settings");
		return 76;
	}

	return 0;
}

static int do_gcoalesce(int fd, struct ifreq *ifr)
{
	int err;

	fprintf(stdout, "Coalesce parameters for %s:\n", devname);

	ecoal.cmd = ETHTOOL_GCOALESCE;
	ifr->ifr_data = (caddr_t)&ecoal;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err == 0) {
		err = dump_coalesce();
		if (err)
			return err;
	} else {
		perror("Cannot get device coalesce settings");
		return 82;
	}

	return 0;
}

static int do_scoalesce(int fd, struct ifreq *ifr)
{
	int err, changed = 0;

	ecoal.cmd = ETHTOOL_GCOALESCE;
	ifr->ifr_data = (caddr_t)&ecoal;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err) {
		perror("Cannot get device coalesce settings");
		return 76;
	}

	do_generic_set(cmdline_coalesce, ARRAY_SIZE(cmdline_coalesce),
		       &changed);

	if (!changed) {
		fprintf(stderr, "no ring parameters changed, aborting\n");
		return 80;
	}

	ecoal.cmd = ETHTOOL_SCOALESCE;
	ifr->ifr_data = (caddr_t)&ecoal;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err) {
		perror("Cannot set device ring parameters");
		return 81;
	}

	return 0;
}

static int do_goffload(int fd, struct ifreq *ifr)
{
	struct ethtool_value eval;
	int err, allfail = 1, rx = 0, tx = 0, sg = 0, tso = 0, ufo = 0;

	fprintf(stdout, "Offload parameters for %s:\n", devname);

	eval.cmd = ETHTOOL_GRXCSUM;
	ifr->ifr_data = (caddr_t)&eval;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err)
		perror("Cannot get device rx csum settings");
	else {
		rx = eval.data;
		allfail = 0;
	}

	eval.cmd = ETHTOOL_GTXCSUM;
	ifr->ifr_data = (caddr_t)&eval;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err)
		perror("Cannot get device tx csum settings");
	else {
		tx = eval.data;
		allfail = 0;
	}

	eval.cmd = ETHTOOL_GSG;
	ifr->ifr_data = (caddr_t)&eval;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err)
		perror("Cannot get device scatter-gather settings");
	else {
		sg = eval.data;
		allfail = 0;
	}

	eval.cmd = ETHTOOL_GTSO;
	ifr->ifr_data = (caddr_t)&eval;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err)
		perror("Cannot get device tcp segmentation offload settings");
	else {
		tso = eval.data;
		allfail = 0;
	}

	eval.cmd = ETHTOOL_GUFO;
	ifr->ifr_data = (caddr_t)&eval;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err)
		perror("Cannot get device udp large send offload settings");
	else {
		ufo = eval.data;
		allfail = 0;
	}

	if (allfail) {
		fprintf(stdout, "no offload info available\n");
		return 83;
	}

	return dump_offload(rx, tx, sg, tso, ufo);
}

static int do_soffload(int fd, struct ifreq *ifr)
{
	struct ethtool_value eval;
	int err, changed = 0;

	if (off_csum_rx_wanted >= 0) {
		changed = 1;
		eval.cmd = ETHTOOL_SRXCSUM;
		eval.data = (off_csum_rx_wanted == 1);
		ifr->ifr_data = (caddr_t)&eval;
		err = ioctl(fd, SIOCETHTOOL, ifr);
		if (err) {
			perror("Cannot set device rx csum settings");
			return 84;
		}
	}

	if (off_csum_tx_wanted >= 0) {
		changed = 1;
		eval.cmd = ETHTOOL_STXCSUM;
		eval.data = (off_csum_tx_wanted == 1);
		ifr->ifr_data = (caddr_t)&eval;
		err = ioctl(fd, SIOCETHTOOL, ifr);
		if (err) {
			perror("Cannot set device tx csum settings");
			return 85;
		}
	}

	if (off_sg_wanted >= 0) {
		changed = 1;
		eval.cmd = ETHTOOL_SSG;
		eval.data = (off_sg_wanted == 1);
		ifr->ifr_data = (caddr_t)&eval;
		err = ioctl(fd, SIOCETHTOOL, ifr);
		if (err) {
			perror("Cannot set device scatter-gather settings");
			return 86;
		}
	}

	if (off_tso_wanted >= 0) {
		changed = 1;
		eval.cmd = ETHTOOL_STSO;
		eval.data = (off_tso_wanted == 1);
		ifr->ifr_data = (caddr_t)&eval;
		err = ioctl(fd, SIOCETHTOOL, ifr);
		if (err) {
			perror("Cannot set device tcp segmentation offload settings");
			return 88;
		}
	}
	if (off_ufo_wanted >= 0) {
		changed = 1;
		eval.cmd = ETHTOOL_SUFO;
		eval.data = (off_ufo_wanted == 1);
		ifr->ifr_data = (caddr_t)&eval;
		err = ioctl(fd, SIOCETHTOOL, ifr);
		if (err) {
			perror("Cannot set device udp large send offload settings");
			return 89;
		}
	}
	if (!changed) {
		fprintf(stdout, "no offload settings changed\n");
	}

	return 0;
}

static int do_gset(int fd, struct ifreq *ifr)
{
	int err;
	struct ethtool_cmd ecmd;
	struct ethtool_wolinfo wolinfo;
	struct ethtool_value edata;
	int allfail = 1;

	fprintf(stdout, "Settings for %s:\n", devname);

	ecmd.cmd = ETHTOOL_GSET;
	ifr->ifr_data = (caddr_t)&ecmd;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err == 0) {
		err = dump_ecmd(&ecmd);
		if (err)
			return err;
		allfail = 0;
	} else if (errno != EOPNOTSUPP) {
		perror("Cannot get device settings");
	}

	wolinfo.cmd = ETHTOOL_GWOL;
	ifr->ifr_data = (caddr_t)&wolinfo;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err == 0) {
		err = dump_wol(&wolinfo);
		if (err)
			return err;
		allfail = 0;
	} else if (errno != EOPNOTSUPP) {
		perror("Cannot get wake-on-lan settings");
	}

	edata.cmd = ETHTOOL_GMSGLVL;
	ifr->ifr_data = (caddr_t)&edata;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err == 0) {
		fprintf(stdout, "	Current message level: 0x%08x (%d)\n",
			edata.data, edata.data);
		allfail = 0;
	} else if (errno != EOPNOTSUPP) {
		perror("Cannot get message level");
	}

	edata.cmd = ETHTOOL_GLINK;
	ifr->ifr_data = (caddr_t)&edata;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err == 0) {
		fprintf(stdout, "	Link detected: %s\n",
			edata.data ? "yes":"no");
		allfail = 0;
	} else if (errno != EOPNOTSUPP) {
		perror("Cannot get link status");
	}

	if (allfail) {
		fprintf(stdout, "No data available\n");
		return 75;
	}
	return 0;
}

static int do_sset(int fd, struct ifreq *ifr)
{
	int err;

	if (gset_changed) {
		struct ethtool_cmd ecmd;

		ecmd.cmd = ETHTOOL_GSET;
		ifr->ifr_data = (caddr_t)&ecmd;
		err = ioctl(fd, SIOCETHTOOL, ifr);
		if (err < 0) {
			perror("Cannot get current device settings");
		} else {
			/* Change everything the user specified. */
			if (speed_wanted != -1)
				ecmd.speed = speed_wanted;
			if (duplex_wanted != -1)
				ecmd.duplex = duplex_wanted;
			if (port_wanted != -1)
				ecmd.port = port_wanted;
			if (autoneg_wanted != -1)
				ecmd.autoneg = autoneg_wanted;
			if (phyad_wanted != -1)
				ecmd.phy_address = phyad_wanted;
			if (xcvr_wanted != -1)
				ecmd.transceiver = xcvr_wanted;
			if (advertising_wanted != -1) {
				if (advertising_wanted == 0)
					ecmd.advertising = ecmd.supported &
						(ADVERTISED_10baseT_Half |
						 ADVERTISED_10baseT_Full |
						 ADVERTISED_100baseT_Half |
						 ADVERTISED_100baseT_Full |
						 ADVERTISED_1000baseT_Half |
						 ADVERTISED_1000baseT_Full);
				else
					ecmd.advertising = advertising_wanted;
			}

			/* Try to perform the update. */
			ecmd.cmd = ETHTOOL_SSET;
			ifr->ifr_data = (caddr_t)&ecmd;
			err = ioctl(fd, SIOCETHTOOL, ifr);
			if (err < 0)
				perror("Cannot set new settings");
		}
		if (err < 0) {
			if (speed_wanted != -1)
				fprintf(stderr, "  not setting speed\n");
			if (duplex_wanted != -1)
				fprintf(stderr, "  not setting duplex\n");
			if (port_wanted != -1)
				fprintf(stderr, "  not setting port\n");
			if (autoneg_wanted != -1)
				fprintf(stderr, "  not setting autoneg\n");
			if (phyad_wanted != -1)
				fprintf(stderr, "  not setting phy_address\n");
			if (xcvr_wanted != -1)
				fprintf(stderr, "  not setting transceiver\n");
		}
	}

	if (gwol_changed) {
		struct ethtool_wolinfo wol;

		wol.cmd = ETHTOOL_GWOL;
		ifr->ifr_data = (caddr_t)&wol;
		err = ioctl(fd, SIOCETHTOOL, ifr);
		if (err < 0) {
			perror("Cannot get current wake-on-lan settings");
		} else {
			/* Change everything the user specified. */
			if (wol_change) {
				wol.wolopts = wol_wanted;
			}
			if (sopass_change) {
				int i;
				for (i = 0; i < SOPASS_MAX; i++) {
					wol.sopass[i] = sopass_wanted[i];
				}
			}

			/* Try to perform the update. */
			wol.cmd = ETHTOOL_SWOL;
			ifr->ifr_data = (caddr_t)&wol;
			err = ioctl(fd, SIOCETHTOOL, ifr);
			if (err < 0)
				perror("Cannot set new wake-on-lan settings");
		}
		if (err < 0) {
			if (wol_change)
				fprintf(stderr, "  not setting wol\n");
			if (sopass_change)
				fprintf(stderr, "  not setting sopass\n");
		}
	}

	if (msglvl_wanted != -1) {
		struct ethtool_value edata;

		edata.cmd = ETHTOOL_SMSGLVL;
		edata.data = msglvl_wanted;
		ifr->ifr_data = (caddr_t)&edata;;
		err = ioctl(fd, SIOCETHTOOL, ifr);
		if (err < 0)
			perror("Cannot set new msglvl");
	}

	return 0;
}

static int do_gregs(int fd, struct ifreq *ifr)
{
	int err;
	struct ethtool_drvinfo drvinfo;
	struct ethtool_regs *regs;

	drvinfo.cmd = ETHTOOL_GDRVINFO;
	ifr->ifr_data = (caddr_t)&drvinfo;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot get driver information");
		return 72;
	}

	regs = calloc(1, sizeof(*regs)+drvinfo.regdump_len);
	if (!regs) {
		perror("Cannot allocate memory for register dump");
		return 73;
	}
	regs->cmd = ETHTOOL_GREGS;
	regs->len = drvinfo.regdump_len;
	ifr->ifr_data = (caddr_t)regs;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot get register dump");
		free(regs);
		return 74;
	}
	if(dump_regs(&drvinfo, regs) < 0) {
		perror("Cannot dump registers");
		free(regs);
		return 75;
	}
	free(regs);

	return 0;
}

static int do_nway_rst(int fd, struct ifreq *ifr)
{
	struct ethtool_value edata;
	int err;

	edata.cmd = ETHTOOL_NWAY_RST;
	ifr->ifr_data = (caddr_t)&edata;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0)
		perror("Cannot restart autonegotiation");

	return err;
}

static int do_geeprom(int fd, struct ifreq *ifr)
{
	int err;
	struct ethtool_drvinfo drvinfo;
	struct ethtool_eeprom *eeprom;

	drvinfo.cmd = ETHTOOL_GDRVINFO;
	ifr->ifr_data = (caddr_t)&drvinfo;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot get driver information");
		return 74;
	}

	if (geeprom_length <= 0)
		geeprom_length = drvinfo.eedump_len;

	if (drvinfo.eedump_len < geeprom_offset + geeprom_length)
		geeprom_length = drvinfo.eedump_len - geeprom_offset;

	eeprom = calloc(1, sizeof(*eeprom)+geeprom_length);
	if (!eeprom) {
		perror("Cannot allocate memory for EEPROM data");
		return 75;
	}
	eeprom->cmd = ETHTOOL_GEEPROM;
	eeprom->len = geeprom_length;
	eeprom->offset = geeprom_offset;
	ifr->ifr_data = (caddr_t)eeprom;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot get EEPROM data");
		free(eeprom);
		return 74;
	}
	err = dump_eeprom(&drvinfo, eeprom);
	free(eeprom);

	return err;
}

static int do_seeprom(int fd, struct ifreq *ifr)
{
	int err;
	struct {
		struct ethtool_eeprom eeprom;
		u8 data;
	} edata;

	edata.eeprom.cmd = ETHTOOL_SEEPROM;
	edata.eeprom.len = 1;
	edata.eeprom.offset = seeprom_offset;
	edata.eeprom.magic = seeprom_magic;
	edata.data = seeprom_value;
	ifr->ifr_data = (caddr_t)&edata.eeprom;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot set EEPROM data");
		return 87;
	}

	return err;
}

static int do_test(int fd, struct ifreq *ifr)
{
	int err;
	struct ethtool_drvinfo drvinfo;
	struct ethtool_test *test;
	struct ethtool_gstrings *strings;

	drvinfo.cmd = ETHTOOL_GDRVINFO;
	ifr->ifr_data = (caddr_t)&drvinfo;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot get driver information");
		return 72;
	}

	test = calloc(1, sizeof(*test) + drvinfo.testinfo_len * sizeof(u64));
	if (!test) {
		perror("Cannot allocate memory for test info");
		return 73;
	}
	memset (test->data, 0, drvinfo.testinfo_len * sizeof(u64));
	test->cmd = ETHTOOL_TEST;
	test->len = drvinfo.testinfo_len;
	if (test_type == OFFLINE)
		test->flags = ETH_TEST_FL_OFFLINE;
	else
		test->flags = 0;
	ifr->ifr_data = (caddr_t)test;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot test");
		free (test);
		return 74;
	}

	strings = calloc(1, sizeof(*strings) +
			    drvinfo.testinfo_len * ETH_GSTRING_LEN);
	if (!strings) {
		perror("Cannot allocate memory for strings");
		free(test);
		return 73;
	}
	memset (strings->data, 0, drvinfo.testinfo_len * ETH_GSTRING_LEN);
	strings->cmd = ETHTOOL_GSTRINGS;
	strings->string_set = ETH_SS_TEST;
	strings->len = drvinfo.testinfo_len;
	ifr->ifr_data = (caddr_t)strings;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot get strings");
		free (test);
		free (strings);
		return 74;
	}
	err = dump_test(&drvinfo, test, strings);
	free(test);
	free(strings);

	return err;
}

static int do_phys_id(int fd, struct ifreq *ifr)
{
	int err;
	struct ethtool_value edata;

	edata.cmd = ETHTOOL_PHYS_ID;
	edata.data = phys_id_time;
	ifr->ifr_data = (caddr_t)&edata;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0)
		perror("Cannot identify NIC");

	return err;
}

static int do_gstats(int fd, struct ifreq *ifr)
{
	struct ethtool_drvinfo drvinfo;
	struct ethtool_gstrings *strings;
	struct ethtool_stats *stats;
	unsigned int n_stats, sz_str, sz_stats, i;
	int err;

	drvinfo.cmd = ETHTOOL_GDRVINFO;
	ifr->ifr_data = (caddr_t)&drvinfo;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot get driver information");
		return 71;
	}

	n_stats = drvinfo.n_stats;
	if (n_stats < 1) {
		fprintf(stderr, "no stats available\n");
		return 94;
	}

	sz_str = n_stats * ETH_GSTRING_LEN;
	sz_stats = n_stats * sizeof(u64);

	strings = calloc(1, sz_str + sizeof(struct ethtool_gstrings));
	stats = calloc(1, sz_stats + sizeof(struct ethtool_stats));
	if (!strings || !stats) {
		fprintf(stderr, "no memory available\n");
		return 95;
	}

	strings->cmd = ETHTOOL_GSTRINGS;
	strings->string_set = ETH_SS_STATS;
	strings->len = n_stats;
	ifr->ifr_data = (caddr_t) strings;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot get stats strings information");
		free(strings);
		free(stats);
		return 96;
	}

	stats->cmd = ETHTOOL_GSTATS;
	stats->n_stats = n_stats;
	ifr->ifr_data = (caddr_t) stats;
	err = ioctl(fd, SIOCETHTOOL, ifr);
	if (err < 0) {
		perror("Cannot get stats information");
		free(strings);
		free(stats);
		return 97;
	}

	/* todo - pretty-print the strings per-driver */
	fprintf(stdout, "NIC statistics:\n");
	for (i = 0; i < n_stats; i++) {
		char s[ETH_GSTRING_LEN];

		strncpy(s, (const char *) &strings->data[i * ETH_GSTRING_LEN],
			ETH_GSTRING_LEN);
		fprintf(stdout, "     %s: %llu\n",
			s, stats->data[i]);
	}
	free(strings);
	free(stats);

	return 0;
}

int main(int argc, char **argp, char **envp)
{
	parse_cmdline(argc, argp);
	return doit();
}