net/eth.c - filogic/uboot - Gitiles

 /*
  * (C) Copyright 2001-2004
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  */

 #include <common.h>
 #include <command.h>
 #include <net.h>

 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)

 #ifdef CFG_GT_6426x
 extern int gt6426x_eth_initialize(bd_t *bis);
 #endif

 extern int au1x00_enet_initialize(bd_t*);
 extern int dc21x4x_initialize(bd_t*);
 extern int e1000_initialize(bd_t*);
 extern int eepro100_initialize(bd_t*);
 extern int eth_3com_initialize(bd_t*);
 extern int fec_initialize(bd_t*);
 extern int inca_switch_initialize(bd_t*);
 extern int mpc5xxx_fec_initialize(bd_t*);
 extern int mpc8220_fec_initialize(bd_t*);
 extern int mv6436x_eth_initialize(bd_t *);
 extern int mv6446x_eth_initialize(bd_t *);
 extern int natsemi_initialize(bd_t*);
 extern int ns8382x_initialize(bd_t*);
 extern int pcnet_initialize(bd_t*);
 extern int plb2800_eth_initialize(bd_t*);
 extern int ppc_4xx_eth_initialize(bd_t *);
 extern int rtl8139_initialize(bd_t*);
 extern int rtl8169_initialize(bd_t*);
 extern int scc_initialize(bd_t*);
 extern int skge_initialize(bd_t*);
 extern int tsec_initialize(bd_t*, int, char *);

 static struct eth_device *eth_devices, *eth_current;

 struct eth_device *eth_get_dev(void)
 {
 	return eth_current;
 }

 int eth_get_dev_index (void)
 {
 	struct eth_device *dev;
 	int num = 0;

 	if (!eth_devices) {
 		return (-1);
 	}

 	for (dev = eth_devices; dev; dev = dev->next) {
 		if (dev == eth_current)
 			break;
 		++num;
 	}

 	if (dev) {
 		return (num);
 	}

 	return (0);
 }

 int eth_register(struct eth_device* dev)
 {
 	struct eth_device *d;

 	if (!eth_devices) {
 		eth_current = eth_devices = dev;
 #ifdef CONFIG_NET_MULTI
 		/* update current ethernet name */
 		{
 			char *act = getenv("ethact");
 			if (act == NULL || strcmp(act, eth_current->name) != 0)
 				setenv("ethact", eth_current->name);
 		}
 #endif
 	} else {
 		for (d=eth_devices; d->next!=eth_devices; d=d->next);
 		d->next = dev;
 	}

 	dev->state = ETH_STATE_INIT;
 	dev->next  = eth_devices;

 	return 0;
 }

 int eth_initialize(bd_t *bis)
 {
 	char enetvar[32], env_enetaddr[6];
 	int i, eth_number = 0;
 	char *tmp, *end;

 	eth_devices = NULL;
 	eth_current = NULL;

 #ifdef CONFIG_DB64360
 	mv6436x_eth_initialize(bis);
 #endif
 #ifdef CONFIG_CPCI750
 	mv6436x_eth_initialize(bis);
 #endif
 #ifdef CONFIG_DB64460
 	mv6446x_eth_initialize(bis);
 #endif
 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) && !defined(CONFIG_AP1000)
 	ppc_4xx_eth_initialize(bis);
 #endif
 #ifdef CONFIG_INCA_IP_SWITCH
 	inca_switch_initialize(bis);
 #endif
 #ifdef CONFIG_PLB2800_ETHER
 	plb2800_eth_initialize(bis);
 #endif
 #ifdef SCC_ENET
 	scc_initialize(bis);
 #endif
 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 	fec_initialize(bis);
 #endif
 #if defined(CONFIG_MPC5xxx_FEC)
 	mpc5xxx_fec_initialize(bis);
 #endif
 #if defined(CONFIG_MPC8220_FEC)
 	mpc8220_fec_initialize(bis);
 #endif
 #if defined(CONFIG_SK98)
 	skge_initialize(bis);
 #endif
 #if defined(CONFIG_MPC85XX_TSEC1)
 	tsec_initialize(bis, 0, CONFIG_MPC85XX_TSEC1_NAME);
 #elif defined(CONFIG_MPC83XX_TSEC1)
 	tsec_initialize(bis, 0, CONFIG_MPC83XX_TSEC1_NAME);
 #endif
 #if defined(CONFIG_MPC85XX_TSEC2)
 	tsec_initialize(bis, 1, CONFIG_MPC85XX_TSEC2_NAME);
 #elif defined(CONFIG_MPC83XX_TSEC2)
 	tsec_initialize(bis, 1, CONFIG_MPC83XX_TSEC2_NAME);
 #endif
 #if defined(CONFIG_MPC85XX_FEC)
 	tsec_initialize(bis, 2, CONFIG_MPC85XX_FEC_NAME);
 #else
 #    if defined(CONFIG_MPC85XX_TSEC3)
 	tsec_initialize(bis, 2, CONFIG_MPC85XX_TSEC3_NAME);
 #    elif defined(CONFIG_MPC83XX_TSEC3)
 	tsec_initialize(bis, 2, CONFIG_MPC83XX_TSEC3_NAME);
 #    endif
 #    if defined(CONFIG_MPC85XX_TSEC4)
 	tsec_initialize(bis, 3, CONFIG_MPC85XX_TSEC4_NAME);
 #    elif defined(CONFIG_MPC83XX_TSEC4)
 	tsec_initialize(bis, 3, CONFIG_MPC83XX_TSEC4_NAME);
 #    endif
 #endif
 #if defined(CONFIG_AU1X00)
 	au1x00_enet_initialize(bis);
 #endif
 #ifdef CONFIG_E1000
 	e1000_initialize(bis);
 #endif
 #ifdef CONFIG_EEPRO100
 	eepro100_initialize(bis);
 #endif
 #ifdef CONFIG_TULIP
 	dc21x4x_initialize(bis);
 #endif
 #ifdef CONFIG_3COM
 	eth_3com_initialize(bis);
 #endif
 #ifdef CONFIG_PCNET
 	pcnet_initialize(bis);
 #endif
 #ifdef CFG_GT_6426x
 	gt6426x_eth_initialize(bis);
 #endif
 #ifdef CONFIG_NATSEMI
 	natsemi_initialize(bis);
 #endif
 #ifdef CONFIG_NS8382X
 	ns8382x_initialize(bis);
 #endif
 #if defined(CONFIG_RTL8139)
 	rtl8139_initialize(bis);
 #endif
 #if defined(CONFIG_RTL8169)
 	rtl8169_initialize(bis);
 #endif

 	if (!eth_devices) {
 		puts ("No ethernet found.\n");
 	} else {
 		struct eth_device *dev = eth_devices;
 		char *ethprime = getenv ("ethprime");

 		do {
 			if (eth_number)
 				puts (", ");

 			printf("%s", dev->name);

 			if (ethprime && strcmp (dev->name, ethprime) == 0) {
 				eth_current = dev;
 				puts (" [PRIME]");
 			}

 			sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 			tmp = getenv (enetvar);

 			for (i=0; i<6; i++) {
 				env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 				if (tmp)
 					tmp = (*end) ? end+1 : end;
 			}

 			if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 				if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 				    memcmp(dev->enetaddr, env_enetaddr, 6))
 				{
 					printf ("\nWarning: %s MAC addresses don't match:\n",
 						dev->name);
 					printf ("Address in SROM is         "
 					       "%02X:%02X:%02X:%02X:%02X:%02X\n",
 					       dev->enetaddr[0], dev->enetaddr[1],
 					       dev->enetaddr[2], dev->enetaddr[3],
 					       dev->enetaddr[4], dev->enetaddr[5]);
 					printf ("Address in environment is  "
 					       "%02X:%02X:%02X:%02X:%02X:%02X\n",
 					       env_enetaddr[0], env_enetaddr[1],
 					       env_enetaddr[2], env_enetaddr[3],
 					       env_enetaddr[4], env_enetaddr[5]);
 				}

 				memcpy(dev->enetaddr, env_enetaddr, 6);
 			}

 			eth_number++;
 			dev = dev->next;
 		} while(dev != eth_devices);

 #ifdef CONFIG_NET_MULTI
 		/* update current ethernet name */
 		if (eth_current) {
 			char *act = getenv("ethact");
 			if (act == NULL || strcmp(act, eth_current->name) != 0)
 				setenv("ethact", eth_current->name);
 		} else
 			setenv("ethact", NULL);
 #endif

 		putc ('\n');
 	}

 	return eth_number;
 }

 void eth_set_enetaddr(int num, char *addr) {
 	struct eth_device *dev;
 	unsigned char enetaddr[6];
 	char *end;
 	int i;

 	debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);

 	if (!eth_devices)
 		return;

 	for (i=0; i<6; i++) {
 		enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 		if (addr)
 			addr = (*end) ? end+1 : end;
 	}

 	dev = eth_devices;
 	while(num-- > 0) {
 		dev = dev->next;

 		if (dev == eth_devices)
 			return;
 	}

 	debug ( "Setting new HW address on %s\n"
 		"New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 		dev->name,
 		enetaddr[0], enetaddr[1],
 		enetaddr[2], enetaddr[3],
 		enetaddr[4], enetaddr[5]);

 	memcpy(dev->enetaddr, enetaddr, 6);
 }

 int eth_init(bd_t *bis)
 {
 	struct eth_device* old_current;

 	if (!eth_current)
 		return 0;

 	old_current = eth_current;
 	do {
 		debug ("Trying %s\n", eth_current->name);

 		if (eth_current->init(eth_current, bis)) {
 			eth_current->state = ETH_STATE_ACTIVE;

 			return 1;
 		}
 		debug  ("FAIL\n");

 		eth_try_another(0);
 	} while (old_current != eth_current);

 	return 0;
 }

 void eth_halt(void)
 {
 	if (!eth_current)
 		return;

 	eth_current->halt(eth_current);

 	eth_current->state = ETH_STATE_PASSIVE;
 }

 int eth_send(volatile void *packet, int length)
 {
 	if (!eth_current)
 		return -1;

 	return eth_current->send(eth_current, packet, length);
 }

 int eth_rx(void)
 {
 	if (!eth_current)
 		return -1;

 	return eth_current->recv(eth_current);
 }

 void eth_try_another(int first_restart)
 {
 	static struct eth_device *first_failed = NULL;

 	if (!eth_current)
 		return;

 	if (first_restart) {
 		first_failed = eth_current;
 	}

 	eth_current = eth_current->next;

 #ifdef CONFIG_NET_MULTI
 	/* update current ethernet name */
 	{
 		char *act = getenv("ethact");
 		if (act == NULL || strcmp(act, eth_current->name) != 0)
 			setenv("ethact", eth_current->name);
 	}
 #endif

 	if (first_failed == eth_current) {
 		NetRestartWrap = 1;
 	}
 }

 #ifdef CONFIG_NET_MULTI
 void eth_set_current(void)
 {
 	char *act;
 	struct eth_device* old_current;

 	if (!eth_current)	/* XXX no current */
 		return;

 	act = getenv("ethact");
 	if (act != NULL) {
 		old_current = eth_current;
 		do {
 			if (strcmp(eth_current->name, act) == 0)
 				return;
 			eth_current = eth_current->next;
 		} while (old_current != eth_current);
 	}

 	setenv("ethact", eth_current->name);
 }
 #endif

 char *eth_get_name (void)
 {
 	return (eth_current ? eth_current->name : "unknown");
 }
 #endif
	/*
	* (C) Copyright 2001-2004
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* See file CREDITS for list of people who contributed to this
	* project.
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as
	* published by the Free Software Foundation; either version 2 of
	* the License, or (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	* MA 02111-1307 USA
	*/

	#include <common.h>
	#include <command.h>
	#include <net.h>

	#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)

	#ifdef CFG_GT_6426x
	extern int gt6426x_eth_initialize(bd_t *bis);
	#endif

	extern int au1x00_enet_initialize(bd_t*);
	extern int dc21x4x_initialize(bd_t*);
	extern int e1000_initialize(bd_t*);
	extern int eepro100_initialize(bd_t*);
	extern int eth_3com_initialize(bd_t*);
	extern int fec_initialize(bd_t*);
	extern int inca_switch_initialize(bd_t*);
	extern int mpc5xxx_fec_initialize(bd_t*);
	extern int mpc8220_fec_initialize(bd_t*);
	extern int mv6436x_eth_initialize(bd_t *);
	extern int mv6446x_eth_initialize(bd_t *);
	extern int natsemi_initialize(bd_t*);
	extern int ns8382x_initialize(bd_t*);
	extern int pcnet_initialize(bd_t*);
	extern int plb2800_eth_initialize(bd_t*);
	extern int ppc_4xx_eth_initialize(bd_t *);
	extern int rtl8139_initialize(bd_t*);
	extern int rtl8169_initialize(bd_t*);
	extern int scc_initialize(bd_t*);
	extern int skge_initialize(bd_t*);
	extern int tsec_initialize(bd_t, int, char );

	static struct eth_device eth_devices, eth_current;

	struct eth_device *eth_get_dev(void)
	{
	return eth_current;
	}

	int eth_get_dev_index (void)
	{
	struct eth_device *dev;
	int num = 0;

	if (!eth_devices) {
	return (-1);
	}

	for (dev = eth_devices; dev; dev = dev->next) {
	if (dev == eth_current)
	break;
	++num;
	}

	if (dev) {
	return (num);
	}

	return (0);
	}

	int eth_register(struct eth_device* dev)
	{
	struct eth_device *d;

	if (!eth_devices) {
	eth_current = eth_devices = dev;
	#ifdef CONFIG_NET_MULTI
	/* update current ethernet name */
	{
	char *act = getenv("ethact");
	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	setenv("ethact", eth_current->name);
	}
	#endif
	} else {
	for (d=eth_devices; d->next!=eth_devices; d=d->next);
	d->next = dev;
	}

	dev->state = ETH_STATE_INIT;
	dev->next = eth_devices;

	return 0;
	}

	int eth_initialize(bd_t *bis)
	{
	char enetvar[32], env_enetaddr[6];
	int i, eth_number = 0;
	char tmp, end;

	eth_devices = NULL;
	eth_current = NULL;

	#ifdef CONFIG_DB64360
	mv6436x_eth_initialize(bis);
	#endif
	#ifdef CONFIG_CPCI750
	mv6436x_eth_initialize(bis);
	#endif
	#ifdef CONFIG_DB64460
	mv6446x_eth_initialize(bis);
	#endif
	#if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) && !defined(CONFIG_AP1000)
	ppc_4xx_eth_initialize(bis);
	#endif
	#ifdef CONFIG_INCA_IP_SWITCH
	inca_switch_initialize(bis);
	#endif
	#ifdef CONFIG_PLB2800_ETHER
	plb2800_eth_initialize(bis);
	#endif
	#ifdef SCC_ENET
	scc_initialize(bis);
	#endif
	#if defined(FEC_ENET) \|\| defined(CONFIG_ETHER_ON_FCC)
	fec_initialize(bis);
	#endif
	#if defined(CONFIG_MPC5xxx_FEC)
	mpc5xxx_fec_initialize(bis);
	#endif
	#if defined(CONFIG_MPC8220_FEC)
	mpc8220_fec_initialize(bis);
	#endif
	#if defined(CONFIG_SK98)
	skge_initialize(bis);
	#endif
	#if defined(CONFIG_MPC85XX_TSEC1)
	tsec_initialize(bis, 0, CONFIG_MPC85XX_TSEC1_NAME);
	#elif defined(CONFIG_MPC83XX_TSEC1)
	tsec_initialize(bis, 0, CONFIG_MPC83XX_TSEC1_NAME);
	#endif
	#if defined(CONFIG_MPC85XX_TSEC2)
	tsec_initialize(bis, 1, CONFIG_MPC85XX_TSEC2_NAME);
	#elif defined(CONFIG_MPC83XX_TSEC2)
	tsec_initialize(bis, 1, CONFIG_MPC83XX_TSEC2_NAME);
	#endif
	#if defined(CONFIG_MPC85XX_FEC)
	tsec_initialize(bis, 2, CONFIG_MPC85XX_FEC_NAME);
	#else
	# if defined(CONFIG_MPC85XX_TSEC3)
	tsec_initialize(bis, 2, CONFIG_MPC85XX_TSEC3_NAME);
	# elif defined(CONFIG_MPC83XX_TSEC3)
	tsec_initialize(bis, 2, CONFIG_MPC83XX_TSEC3_NAME);
	# endif
	# if defined(CONFIG_MPC85XX_TSEC4)
	tsec_initialize(bis, 3, CONFIG_MPC85XX_TSEC4_NAME);
	# elif defined(CONFIG_MPC83XX_TSEC4)
	tsec_initialize(bis, 3, CONFIG_MPC83XX_TSEC4_NAME);
	# endif
	#endif
	#if defined(CONFIG_AU1X00)
	au1x00_enet_initialize(bis);
	#endif
	#ifdef CONFIG_E1000
	e1000_initialize(bis);
	#endif
	#ifdef CONFIG_EEPRO100
	eepro100_initialize(bis);
	#endif
	#ifdef CONFIG_TULIP
	dc21x4x_initialize(bis);
	#endif
	#ifdef CONFIG_3COM
	eth_3com_initialize(bis);
	#endif
	#ifdef CONFIG_PCNET
	pcnet_initialize(bis);
	#endif
	#ifdef CFG_GT_6426x
	gt6426x_eth_initialize(bis);
	#endif
	#ifdef CONFIG_NATSEMI
	natsemi_initialize(bis);
	#endif
	#ifdef CONFIG_NS8382X
	ns8382x_initialize(bis);
	#endif
	#if defined(CONFIG_RTL8139)
	rtl8139_initialize(bis);
	#endif
	#if defined(CONFIG_RTL8169)
	rtl8169_initialize(bis);
	#endif

	if (!eth_devices) {
	puts ("No ethernet found.\n");
	} else {
	struct eth_device *dev = eth_devices;
	char *ethprime = getenv ("ethprime");

	do {
	if (eth_number)
	puts (", ");

	printf("%s", dev->name);

	if (ethprime && strcmp (dev->name, ethprime) == 0) {
	eth_current = dev;
	puts (" [PRIME]");
	}

	sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
	tmp = getenv (enetvar);

	for (i=0; i<6; i++) {
	env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
	if (tmp)
	tmp = (*end) ? end+1 : end;
	}

	if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
	if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
	memcmp(dev->enetaddr, env_enetaddr, 6))
	{
	printf ("\nWarning: %s MAC addresses don't match:\n",
	dev->name);
	printf ("Address in SROM is "
	"%02X:%02X:%02X:%02X:%02X:%02X\n",
	dev->enetaddr[0], dev->enetaddr[1],
	dev->enetaddr[2], dev->enetaddr[3],
	dev->enetaddr[4], dev->enetaddr[5]);
	printf ("Address in environment is "
	"%02X:%02X:%02X:%02X:%02X:%02X\n",
	env_enetaddr[0], env_enetaddr[1],
	env_enetaddr[2], env_enetaddr[3],
	env_enetaddr[4], env_enetaddr[5]);
	}

	memcpy(dev->enetaddr, env_enetaddr, 6);
	}

	eth_number++;
	dev = dev->next;
	} while(dev != eth_devices);

	#ifdef CONFIG_NET_MULTI
	/* update current ethernet name */
	if (eth_current) {
	char *act = getenv("ethact");
	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	setenv("ethact", eth_current->name);
	} else
	setenv("ethact", NULL);
	#endif

	putc ('\n');
	}

	return eth_number;
	}

	void eth_set_enetaddr(int num, char *addr) {
	struct eth_device *dev;
	unsigned char enetaddr[6];
	char *end;
	int i;

	debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);

	if (!eth_devices)
	return;

	for (i=0; i<6; i++) {
	enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
	if (addr)
	addr = (*end) ? end+1 : end;
	}

	dev = eth_devices;
	while(num-- > 0) {
	dev = dev->next;

	if (dev == eth_devices)
	return;
	}

	debug ( "Setting new HW address on %s\n"
	"New Address is %02X:%02X:%02X:%02X:%02X:%02X\n",
	dev->name,
	enetaddr[0], enetaddr[1],
	enetaddr[2], enetaddr[3],
	enetaddr[4], enetaddr[5]);

	memcpy(dev->enetaddr, enetaddr, 6);
	}

	int eth_init(bd_t *bis)
	{
	struct eth_device* old_current;

	if (!eth_current)
	return 0;

	old_current = eth_current;
	do {
	debug ("Trying %s\n", eth_current->name);

	if (eth_current->init(eth_current, bis)) {
	eth_current->state = ETH_STATE_ACTIVE;

	return 1;
	}
	debug ("FAIL\n");

	eth_try_another(0);
	} while (old_current != eth_current);

	return 0;
	}

	void eth_halt(void)
	{
	if (!eth_current)
	return;

	eth_current->halt(eth_current);

	eth_current->state = ETH_STATE_PASSIVE;
	}

	int eth_send(volatile void *packet, int length)
	{
	if (!eth_current)
	return -1;

	return eth_current->send(eth_current, packet, length);
	}

	int eth_rx(void)
	{
	if (!eth_current)
	return -1;

	return eth_current->recv(eth_current);
	}

	void eth_try_another(int first_restart)
	{
	static struct eth_device *first_failed = NULL;

	if (!eth_current)
	return;

	if (first_restart) {
	first_failed = eth_current;
	}

	eth_current = eth_current->next;

	#ifdef CONFIG_NET_MULTI
	/* update current ethernet name */
	{
	char *act = getenv("ethact");
	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	setenv("ethact", eth_current->name);
	}
	#endif

	if (first_failed == eth_current) {
	NetRestartWrap = 1;
	}
	}

	#ifdef CONFIG_NET_MULTI
	void eth_set_current(void)
	{
	char *act;
	struct eth_device* old_current;

	if (!eth_current) /* XXX no current */
	return;

	act = getenv("ethact");
	if (act != NULL) {
	old_current = eth_current;
	do {
	if (strcmp(eth_current->name, act) == 0)
	return;
	eth_current = eth_current->next;
	} while (old_current != eth_current);
	}

	setenv("ethact", eth_current->name);
	}
	#endif

	char *eth_get_name (void)
	{
	return (eth_current ? eth_current->name : "unknown");
	}
	#endif