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net: Handle ethaddr changes as an env callback

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When the ethaddr is changed in the env, update the device pdata at the
same time (only if it is probed for the DM case; only if registered for
the non-DM case). Again this gets us closer to completely non-polled
env needed to simplify the net_loop.

This requires that the NET feature select the REGEX feature.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Joe Hershberger 2015-05-20 14:27:26 -05:00 committed by Tom Rini
parent 2d1febf7d5
commit 6e0d26c050
3 changed files with 63 additions and 44 deletions
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3
include/env_callback.h
View File

@ -52,7 +52,8 @@
"serverip:serverip," \
"nvlan:nvlan," \
"vlan:vlan," \
DNS_CALLBACK
DNS_CALLBACK \
"eth\\d?addr:ethaddr,"
#else
#define NET_CALLBACKS
#endif

1
net/Kconfig
View File

@ -4,6 +4,7 @@
menuconfig NET
bool "Networking support"
select REGEX
if NET

103
net/eth.c
View File

@ -9,11 +9,13 @@
#include <common.h>
#include <command.h>
#include <dm.h>
#include <environment.h>
#include <net.h>
#include <miiphy.h>
#include <phy.h>
#include <asm/errno.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
DECLARE_GLOBAL_DATA_PTR;
@ -294,6 +296,33 @@ static int eth_write_hwaddr(struct udevice *dev)
return ret;
}
static int on_ethaddr(const char *name, const char *value, enum env_op op,
int flags)
{
int index;
int retval;
struct udevice *dev;
/* look for an index after "eth" */
index = simple_strtoul(name + 3, NULL, 10);
retval = uclass_find_device_by_seq(UCLASS_ETH, index, false, &dev);
if (!retval) {
struct eth_pdata *pdata = dev->platdata;
switch (op) {
case env_op_create:
case env_op_overwrite:
eth_parse_enetaddr(value, pdata->enetaddr);
break;
case env_op_delete:
memset(pdata->enetaddr, 0, 6);
}
}
return 0;
}
U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);
int eth_init(void)
{
struct udevice *current;
@ -311,25 +340,6 @@ int eth_init(void)
debug("Trying %s\n", current->name);
if (device_active(current)) {
uchar env_enetaddr[6];
struct eth_pdata *pdata = current->platdata;
int enetaddr_changed = 0;
/* Sync environment with network device */
if (eth_getenv_enetaddr_by_index("eth", current->seq,
env_enetaddr)) {
enetaddr_changed = memcmp(pdata->enetaddr,
env_enetaddr, 6);
memcpy(pdata->enetaddr, env_enetaddr, 6);
} else {
memset(env_enetaddr, 0, 6);
enetaddr_changed = memcmp(pdata->enetaddr,
env_enetaddr, 6);
memset(pdata->enetaddr, 0, 6);
}
if (enetaddr_changed)
eth_write_hwaddr(current);
ret = eth_get_ops(current)->start(current);
if (ret >= 0) {
struct eth_device_priv *priv =
@ -634,6 +644,36 @@ int eth_get_dev_index(void)
return eth_current->index;
}
static int on_ethaddr(const char *name, const char *value, enum env_op op,
int flags)
{
int index;
struct eth_device *dev;
if (!eth_devices)
return 0;
/* look for an index after "eth" */
index = simple_strtoul(name + 3, NULL, 10);
dev = eth_devices;
do {
if (dev->index == index) {
switch (op) {
case env_op_create:
case env_op_overwrite:
eth_parse_enetaddr(value, dev->enetaddr);
break;
case env_op_delete:
memset(dev->enetaddr, 0, 6);
}
}
} while (dev != eth_devices);
return 0;
}
U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);
int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
int eth_number)
{
@ -832,36 +872,13 @@ u32 ether_crc(size_t len, unsigned char const *p)
int eth_init(void)
{
struct eth_device *old_current, *dev;
struct eth_device *old_current;
if (!eth_current) {
puts("No ethernet found.\n");
return -ENODEV;
}
/* Sync environment with network devices */
dev = eth_devices;
do {
uchar env_enetaddr[6];
int enetaddr_changed = 0;
if (eth_getenv_enetaddr_by_index("eth", dev->index,
env_enetaddr)) {
enetaddr_changed = memcmp(dev->enetaddr,
env_enetaddr, 6);
memcpy(dev->enetaddr, env_enetaddr, 6);
} else {
memset(env_enetaddr, 0, 6);
enetaddr_changed = memcmp(dev->enetaddr,
env_enetaddr, 6);
memset(dev->enetaddr, 0, 6);
}
if (enetaddr_changed)
eth_write_hwaddr(dev, "eth", dev->index);
dev = dev->next;
} while (dev != eth_devices);
old_current = eth_current;
do {
debug("Trying %s\n", eth_current->name);