phylib does not wait for link

phylib does not wait for link

[Sascha Hauer]

The current phylib behaviour is unusable for unattended network boot, we
need to do something about it.

We currently have no instance that would wait until a link comes up.
This may work for the default-3-seconds-boot-timeout which is enough for
most phys, but fails with smaller timeouts.

There are several places in which we could wait for a link to come up, I
have no idea which one is the best:

- eth_send
- phylib
- in the protocols (dhcp, ping, ...)

Anyway, this deserves fixing before the next release.

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

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Re: phylib does not wait for link

[Jean-Christophe PLAGNIOL-VILLARD]

On 09:46 Wed 24 Oct     , Sascha Hauer wrote:
> The current phylib behaviour is unusable for unattended network boot, we
> need to do something about it.
> 
> We currently have no instance that would wait until a link comes up.
> This may work for the default-3-seconds-boot-timeout which is enough for
> most phys, but fails with smaller timeouts.
> 
> There are several places in which we could wait for a link to come up, I
> have no idea which one is the best:
> 
> - eth_send
yes with timeout
> - phylib
no
> - in the protocols (dhcp, ping, ...)
no too many
> 
> Anyway, this deserves fixing before the next release.
> 
> Sascha
> 
> -- 
> Pengutronix e.K.                           |                             |
> Industrial Linux Solutions                 | http://www.pengutronix.de/  |
> Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
> Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

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