The previous eth_device struct returned by eth_get_dev() allowed code to directly query the state member field. However, with CONFIG_DM_ETH this data gets encapsulated (i.e. private), and eth_get_dev() returns a udevice struct 'abstraction' instead.
This breaks legacy code relying on the former behaviour - e.g. netconsole. (see http://lists.denx.de/pipermail/u-boot/2015-June/216528.html)
The patch introduces a method to retrieve the ethernet device state in a 'clean' and uniform way, supporting both legacy code and driver model. The new function eth_is_active() accepts a device struct pointer and tests it for ETH_STATE_ACTIVE.
Signed-off-by: Bernhard Nortmann bernhard.nortmann@web.de Reviewed-by: Simon Glass sjg@chromium.org ---
Changes in v2: - add "net:" prefix to commit message
include/net.h | 6 ++++++ net/eth.c | 18 +++++++++++++++++- 2 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/include/net.h b/include/net.h index d09bec9..c135ec4 100644 --- a/include/net.h +++ b/include/net.h @@ -149,7 +149,13 @@ struct udevice *eth_get_dev(void); /* get the current device */ */ 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 */ +# ifdef CONFIG_DM_ETH +int eth_is_active(struct udevice *dev); /* Test device for active state */ +# else +int eth_is_active(struct eth_device *dev); /* Test device for active state */ +# endif int eth_init_state_only(void); /* Set active state */ void eth_halt_state_only(void); /* Set passive state */ #endif diff --git a/net/eth.c b/net/eth.c index d3ec8d6..d3ff7c6 100644 --- a/net/eth.c +++ b/net/eth.c @@ -386,6 +386,17 @@ void eth_halt(void) priv->state = ETH_STATE_PASSIVE; }
+int eth_is_active(struct udevice *dev) +{ + struct eth_device_priv *priv; + + if (!dev || !device_active(dev)) + return 0; + + priv = dev->uclass_priv; + return priv->state == ETH_STATE_ACTIVE; +} + int eth_send(void *packet, int length) { struct udevice *current; @@ -577,7 +588,7 @@ UCLASS_DRIVER(eth) = { .per_device_auto_alloc_size = sizeof(struct eth_device_priv), .flags = DM_UC_FLAG_SEQ_ALIAS, }; -#endif +#endif /* #ifdef CONFIG_DM_ETH */
#ifndef CONFIG_DM_ETH
@@ -915,6 +926,11 @@ void eth_halt(void) eth_current->state = ETH_STATE_PASSIVE; }
+int eth_is_active(struct eth_device *dev) +{ + return dev && dev->state == ETH_STATE_ACTIVE; +} + int eth_send(void *packet, int length) { if (!eth_current)