eth_common.c
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/*
* (C) Copyright 2001-2015
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
* Joe Hershberger, National Instruments
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <miiphy.h>
#include <net.h>
#include "eth_internal.h"
void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
{
char *end;
int i;
for (i = 0; i < 6; ++i) {
enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
if (addr)
addr = (*end) ? end + 1 : end;
}
}
int eth_env_get_enetaddr(const char *name, uchar *enetaddr)
{
eth_parse_enetaddr(env_get(name), enetaddr);
return is_valid_ethaddr(enetaddr);
}
int eth_env_set_enetaddr(const char *name, const uchar *enetaddr)
{
char buf[ARP_HLEN_ASCII + 1];
if (eth_env_get_enetaddr(name, (uchar *)buf))
return -EEXIST;
sprintf(buf, "%pM", enetaddr);
return env_set(name, buf);
}
int eth_env_get_enetaddr_by_index(const char *base_name, int index,
uchar *enetaddr)
{
char enetvar[32];
sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
return eth_env_get_enetaddr(enetvar, enetaddr);
}
int eth_env_set_enetaddr_by_index(const char *base_name, int index,
uchar *enetaddr)
{
char enetvar[32];
sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
return eth_env_set_enetaddr(enetvar, enetaddr);
}
void eth_common_init(void)
{
bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
miiphy_init();
#endif
#ifdef CONFIG_PHYLIB
phy_init();
#endif
}
int eth_mac_skip(int index)
{
char enetvar[15];
char *skip_state;
sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
skip_state = env_get(enetvar);
return skip_state != NULL;
}
void eth_current_changed(void)
{
char *act = env_get("ethact");
char *ethrotate;
/*
* The call to eth_get_dev() below has a side effect of rotating
* ethernet device if uc_priv->current == NULL. This is not what
* we want when 'ethrotate' variable is 'no'.
*/
ethrotate = env_get("ethrotate");
if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
return;
/* update current ethernet name */
if (eth_get_dev()) {
if (act == NULL || strcmp(act, eth_get_name()) != 0)
env_set("ethact", eth_get_name());
}
/*
* remove the variable completely if there is no active
* interface
*/
else if (act != NULL)
env_set("ethact", NULL);
}
void eth_try_another(int first_restart)
{
static void *first_failed;
char *ethrotate;
/*
* Do not rotate between network interfaces when
* 'ethrotate' variable is set to 'no'.
*/
ethrotate = env_get("ethrotate");
if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
return;
if (!eth_get_dev())
return;
if (first_restart)
first_failed = eth_get_dev();
eth_set_current_to_next();
eth_current_changed();
if (first_failed == eth_get_dev())
net_restart_wrap = 1;
}
void eth_set_current(void)
{
static char *act;
static int env_changed_id;
int env_id;
env_id = get_env_id();
if ((act == NULL) || (env_changed_id != env_id)) {
act = env_get("ethact");
env_changed_id = env_id;
}
if (act == NULL) {
char *ethprime = env_get("ethprime");
void *dev = NULL;
if (ethprime)
dev = eth_get_dev_by_name(ethprime);
if (dev)
eth_set_dev(dev);
else
eth_set_dev(NULL);
} else {
eth_set_dev(eth_get_dev_by_name(act));
}
eth_current_changed();
}
const char *eth_get_name(void)
{
return eth_get_dev() ? eth_get_dev()->name : "unknown";
}