From eaa8a195cc2372349276bf7d581a9e1e2cc83511 Mon Sep 17 00:00:00 2001 From: Bernhard Nortmann Date: Mon, 14 Sep 2015 15:29:43 +0200 Subject: [PATCH] net: expose eth_is_active() function to test network device state 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 Reviewed-by: Simon Glass Acked-by: Joe Hershberger --- include/net.h | 4 ++++ net/eth.c | 18 +++++++++++++++++- 2 files changed, 21 insertions(+), 1 deletion(-) diff --git a/include/net.h b/include/net.h index f1671e38de..3a787cc4e9 100644 --- a/include/net.h +++ b/include/net.h @@ -149,7 +149,9 @@ 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 */ +int eth_is_active(struct udevice *dev); /* Test device for active state */ int eth_init_state_only(void); /* Set active state */ void eth_halt_state_only(void); /* Set passive state */ #endif @@ -195,6 +197,8 @@ static inline unsigned char *eth_get_ethaddr(void) return NULL; } +/* Used only when NetConsole is enabled */ +int eth_is_active(struct eth_device *dev); /* Test device for active state */ /* Set active state */ static inline __attribute__((always_inline)) int eth_init_state_only(void) { diff --git a/net/eth.c b/net/eth.c index 26520d3038..2e24b55726 100644 --- a/net/eth.c +++ b/net/eth.c @@ -389,6 +389,17 @@ 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_get_uclass_priv(dev); + return priv->state == ETH_STATE_ACTIVE; +} + int eth_send(void *packet, int length) { struct udevice *current; @@ -580,7 +591,7 @@ 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 @@ -918,6 +929,11 @@ 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) -- 2.25.1