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
---
Changes in v5: -Added a comment about devname -Only check for alias if the name is long enough
Changes in v4: -Use only the seq from DM to find aliases
Changes in v3: -Added support for aliases
Changes in v2: None
include/configs/sandbox.h | 2 +- include/net.h | 5 +++++ net/eth.c | 50 ++++++++++++++++++++++++++++++++++++++--------- test/dm/eth.c | 24 +++++++++++++++++++++++ test/dm/test.dts | 4 +++- 5 files changed, 74 insertions(+), 11 deletions(-)
diff --git a/include/configs/sandbox.h b/include/configs/sandbox.h index 9189f6a..caf9f5a 100644 --- a/include/configs/sandbox.h +++ b/include/configs/sandbox.h @@ -174,7 +174,7 @@
#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 \ diff --git a/include/net.h b/include/net.h index 37d1f36..5846dfb 100644 --- a/include/net.h +++ b/include/net.h @@ -122,6 +122,11 @@ 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 */ diff --git a/net/eth.c b/net/eth.c index b66d253..14a072b 100644 --- a/net/eth.c +++ b/net/eth.c @@ -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; @@ -419,6 +452,7 @@ 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
@@ -451,6 +485,11 @@ 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; @@ -867,7 +906,6 @@ void eth_set_current(void) { static char *act; static int env_changed_id; - void *old_current; int env_id;
env_id = get_env_id(); @@ -875,14 +913,8 @@ 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(); } diff --git a/test/dm/eth.c b/test/dm/eth.c index 04ccf49..5688b71 100644 --- a/test/dm/eth.c +++ b/test/dm/eth.c @@ -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); diff --git a/test/dm/test.dts b/test/dm/test.dts index 2f68cdf..bc2409d 100644 --- a/test/dm/test.dts +++ b/test/dm/test.dts @@ -17,6 +17,8 @@ testfdt3 = "/b-test"; testfdt5 = "/some-bus/c-test@5"; testfdt8 = "/a-test"; + eth0 = "/eth@10002000"; + eth5 = ð_5; };
uart0: serial { @@ -155,7 +157,7 @@ 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>;