[PATCH] net: Bring up all interfaces before going interactive

[Sascha Hauer]

On Fri, Sep 16, 2022 at 02:49:42PM +0200, Sascha Hauer wrote:
> So far we only bring up network interfaces when we actually need them.
> This means we could be idling in the shell for long and once the user
> decides to do networking he has to wait for the link to be established.
> We can do better: Before going interactive bring up all known network
> interfaces which makes the links established when the user needs them.
> 
> To implement this we have to rework carrier checking a bit, because
> otherwise barebox would wait for the links to be established before
> dropping to the shell.
> 
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> ---
>  common/startup.c |  3 +++
>  include/net.h    |  3 +++
>  net/eth.c        | 34 +++++++++++++++++++++-------------
>  3 files changed, 27 insertions(+), 13 deletions(-)
> 
> diff --git a/common/startup.c b/common/startup.c
> index f53b73f81a..f63a0ae7d5 100644
> --- a/common/startup.c
> +++ b/common/startup.c
> @@ -37,6 +37,7 @@
>  #include <linux/ctype.h>
>  #include <watchdog.h>
>  #include <glob.h>
> +#include <net.h>
>  #include <bselftest.h>
>  
>  extern initcall_t __barebox_initcalls_start[], __barebox_early_initcalls_end[],
> @@ -208,6 +209,8 @@ enum autoboot_state do_autoboot_countdown(void)
>  				&outkey);
>  	command_slice_acquire();
>  
> +	eth_open_all();
> +

We could make the user experience even a bit better by doing this call
before waiting for the autoboot timeout which then speeds up netboot a
bit.

Sascha

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