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dm: eth: Add support for aliases

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Allow network devices to be referred to as "eth0" instead of
"eth@12345678" when specified in ethact.

Add tests to verify this behavior.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Joe Hershberger 2015-03-22 17:09:16 -05:00 committed by Simon Glass
parent bfacad7da1
commit e58780dcb7
5 changed files with 74 additions and 11 deletions
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2
include/configs/sandbox.h
View File

@ -178,7 +178,7 @@
#define SANDBOX_ETH_SETTINGS "ethaddr=00:00:11:22:33:44\0" \
"eth1addr=00:00:11:22:33:45\0" \
"eth2addr=00:00:11:22:33:46\0" \
"eth5addr=00:00:11:22:33:46\0" \
"ipaddr=1.2.3.4\0"
#define CONFIG_EXTRA_ENV_SETTINGS SANDBOX_SERIAL_SETTINGS \

5
include/net.h
View File

@ -124,6 +124,11 @@ struct eth_ops {
#define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops)
struct udevice *eth_get_dev(void); /* get the current device */
/*
* The devname can be either an exact name given by the driver or device tree
* or it can be an alias of the form "eth%d"
*/
struct udevice *eth_get_dev_by_name(const char *devname);
unsigned char *eth_get_ethaddr(void); /* get the current device MAC */
/* Used only when NetConsole is enabled */
int eth_init_state_only(void); /* Set active state */

50
net/eth.c
View File

@ -135,6 +135,39 @@ static void eth_set_dev(struct udevice *dev)
eth_get_uclass_priv()->current = dev;
}
/*
* Find the udevice that either has the name passed in as devname or has an
* alias named devname.
*/
struct udevice *eth_get_dev_by_name(const char *devname)
{
int seq = -1;
char *endp = NULL;
const char *startp = NULL;
struct udevice *it;
struct uclass *uc;
/* Must be longer than 3 to be an alias */
if (strlen(devname) > strlen("eth")) {
startp = devname + strlen("eth");
seq = simple_strtoul(startp, &endp, 10);
}
uclass_get(UCLASS_ETH, &uc);
uclass_foreach_dev(it, uc) {
/* We need the seq to be valid, so make sure it's probed */
device_probe(it);
/*
* Check for the name or the sequence number to match
*/
if (strcmp(it->name, devname) == 0 ||
(endp > startp && it->seq == seq))
return it;
}
return NULL;
}
unsigned char *eth_get_ethaddr(void)
{
struct eth_pdata *pdata;
@ -421,6 +454,7 @@ UCLASS_DRIVER(eth) = {
.pre_remove = eth_pre_remove,
.priv_auto_alloc_size = sizeof(struct eth_uclass_priv),
.per_device_auto_alloc_size = sizeof(struct eth_device_priv),
.flags = DM_UC_FLAG_SEQ_ALIAS,
};
#endif
@ -453,6 +487,11 @@ static void eth_set_current_to_next(void)
eth_current = eth_current->next;
}
static void eth_set_dev(struct eth_device *dev)
{
eth_current = dev;
}
struct eth_device *eth_get_dev_by_name(const char *devname)
{
struct eth_device *dev, *target_dev;
@ -869,7 +908,6 @@ void eth_set_current(void)
{
static char *act;
static int env_changed_id;
void *old_current;
int env_id;
env_id = get_env_id();
@ -877,14 +915,8 @@ void eth_set_current(void)
act = getenv("ethact");
env_changed_id = env_id;
}
if (act != NULL) {
old_current = eth_get_dev();
do {
if (strcmp(eth_get_name(), act) == 0)
return;
eth_set_current_to_next();
} while (old_current != eth_get_dev());
}
if (act != NULL)
eth_set_dev(eth_get_dev_by_name(act));
eth_current_changed();
}

24
test/dm/eth.c
View File

@ -36,3 +36,27 @@ static int dm_test_eth(struct dm_test_state *dms)
return 0;
}
DM_TEST(dm_test_eth, DM_TESTF_SCAN_FDT);
static int dm_test_eth_alias(struct dm_test_state *dms)
{
NetPingIP = string_to_ip("1.1.2.2");
setenv("ethact", "eth0");
ut_assertok(NetLoop(PING));
ut_asserteq_str("eth@10002000", getenv("ethact"));
setenv("ethact", "eth1");
ut_assertok(NetLoop(PING));
ut_asserteq_str("eth@10004000", getenv("ethact"));
/* Expected to fail since eth2 is not defined in the device tree */
setenv("ethact", "eth2");
ut_assertok(NetLoop(PING));
ut_asserteq_str("eth@10002000", getenv("ethact"));
setenv("ethact", "eth5");
ut_assertok(NetLoop(PING));
ut_asserteq_str("eth@10003000", getenv("ethact"));
return 0;
}
DM_TEST(dm_test_eth_alias, DM_TESTF_SCAN_FDT);

4
test/dm/test.dts
View File

@ -18,6 +18,8 @@
testfdt3 = "/b-test";
testfdt5 = "/some-bus/c-test@5";
testfdt8 = "/a-test";
eth0 = "/eth@10002000";
eth5 = &eth_5;
};
uart0: serial {
@ -172,7 +174,7 @@
fake-host-hwaddr = <0x00 0x00 0x66 0x44 0x22 0x00>;
};
eth@10003000 {
eth_5: eth@10003000 {
compatible = "sandbox,eth";
reg = <0x10003000 0x1000>;
fake-host-hwaddr = <0x00 0x00 0x66 0x44 0x22 0x11>;