[U-Boot-Users] [PATCH V2] net: add 'ethrotate' environment variable

[Ben Warren <biggerbadderben@gmail.com>]

Matthias Fuchs wrote:
> [PATCH] net: add 'ethrotate' environment variable
>
> This patch replaces the buildtime configuration option
> CONFIG_NET_DO_NOT_TRY_ANOTHER through the 'ethrotate' runtime
> configuration veriable. See README.
>
> Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
> ---
>  README    |    4 ++++
>  net/eth.c |    9 +++++++++
>  2 files changed, 13 insertions(+), 0 deletions(-)
>
> diff --git a/README b/README
> index f2a4914..d9c2ee2 100644
> --- a/README
> +++ b/README
> @@ -2691,6 +2691,10 @@ Some configuration options can be set using Environment Variables:
>  		  => setenv ethact SCC ETHERNET
>  		  => ping 10.0.0.1 # traffic sent on SCC ETHERNET
>  
> +  ethrotate	- When set to "no" U-Boot does not go through all
> +		  available network interfaces.
> +		  It just stays at the currently selected interface.
> +
>     netretry	- When set to "no" each network operation will
>  		  either succeed or fail without retrying.
>  		  When set to "once" the network operation will
> diff --git a/net/eth.c b/net/eth.c
> index 5d9e9c1..d55fd7e 100644
> --- a/net/eth.c
> +++ b/net/eth.c
> @@ -522,6 +522,15 @@ int eth_receive(volatile void *packet, int length)
>  void eth_try_another(int first_restart)
>  {
>  	static struct eth_device *first_failed = NULL;
> +	char *ethrotate;
> +
> +	/*
> +	 * Do not rotate between network interfaces when
> +	 * 'ethrotate' variable is set to 'no'.
> +	 */
> +	if (((ethrotate = getenv ("ethrotate")) != NULL) &&
> +	    (strcmp(ethrotate, "no") == 0))
> +		return;
>  
>  	if (!eth_current)
>  		return;
>   
Excellent!  Applied.

thanks,
Ben