network configuration was: [PATCH 4/4] RTEMS_USE_LWIP option to use lwip in RTEMS

[Sebastian Huber]

On 20/04/2021 19:37, Gedare Bloom wrote:

> On Tue, Apr 20, 2021 at 11:09 AM Sebastian Huber
> <sebastian.huber at embedded-brains.de> wrote:
>> On 12/04/2021 11:56, Robin.Mueller wrote:
>>
>>> This adds a configuration option if lwIP is used instead of libbsd.
>>> It works by specifying RTEMS_USE_LWIP in the config.ini file.
>> The RTEMS_* namespace is reserved for RTEMS API parts. Since this is
>> BSP-specific, I suggest to rename this option to
>> STM32H7_ENABLE_LWIP_SUPPORT.
>>
> [...]
>
> This will obviate any need for BSP-specific configuration variables
> for networking stacks, they can just inherit from the top-level config
> option.

For this particular BSP, the option changes the behaviour of the HAL 
Ethernet support code. STM ships lwIP support so it seems that the HAL 
was written to support this. However, the libbsd Ethernet driver uses a 
different DMA descriptor handling which better fits for the FreeBSD 
interfaces. This is a low-level issue.

I don't like this option. I think it would be better to just provide 
functions for both network stacks. However, I don't have time for this 
at the moment.

-- 
embedded brains GmbH
Herr Sebastian HUBER
Dornierstr. 4
82178 Puchheim
Germany
email: sebastian.huber at embedded-brains.de
phone: +49-89-18 94 741 - 16
fax:   +49-89-18 94 741 - 08

Registergericht: Amtsgericht München
Registernummer: HRB 157899
Vertretungsberechtigte Geschäftsführer: Peter Rasmussen, Thomas Dörfler
Unsere Datenschutzerklärung finden Sie hier:
https://embedded-brains.de/datenschutzerklaerung/