[PATCH v2 01/14] net: introduce alternative implementation as net-lwip/

[Jerome Forissier]

On 5/27/24 17:34, Tom Rini wrote:
> On Fri, May 24, 2024 at 06:19:55PM +0200, Jerome Forissier wrote:
> 
>> Prepare the introduction of the lwIP (lightweight IP) TCP/IP stack by
>> adding a new net-lwip/ directory and the NET_LWIP symbol. At this
>> point, enabling NET_LWIP simply disables NET. Subsequent commits will
>> introduce the lwIP code, re-work the NETDEVICE integration and port
>> some of the NET commands and features to lwIP.
>>
>> SPL_NET cannot be enabled when NET_LWIP=y. SPL_NET pulls some symbols
>> that are part of NET (such as arp_init(), arp_timeout_check(),
>> arp_receive(), net_arp_wait_packet_ip()). lwIP support in SPL may be
>> added later.
>>
>> Similarly, DFU_TFTP is not compatible with NET_LWIP because it depends
>> on net_loop(), tftp_timeout_ms, tftp_timeout_count_max. Let's add a
>> dependency on !NET_LWIP for now.
>>
>> Signed-off-by: Jerome Forissier <jerome.forissier at linaro.org>
> [snip]
>> diff --git a/Kconfig b/Kconfig
>> index 82df59f176e..758256ab121 100644
>> --- a/Kconfig
>> +++ b/Kconfig
>> @@ -747,6 +747,8 @@ source "env/Kconfig"
>>  
>>  source "net/Kconfig"
>>  
>> +source "net-lwip/Kconfig"
>> +
>>  source "drivers/Kconfig"
>>  
>>  source "fs/Kconfig"
> 
> I think we need to instead rework this to a choice statement instead so
> that in the end we have something like:
> choice "Networking stack"
> config NO_NET
>   bool "No networking support"
> config NET
>   bool "Legacy U-Boot networking stack"
> config NET_LWIP
>   bool "Use lwIP for networking stack"
> 
> if NET_LEGACY
> source "net/Kconfig"
> endif
> 
> if NET_LWIP
> source "net-lwip/Kconfig"
> endif
> 
> And then SPL_NET still depends on !NET_LWIP for now and we sort out the
> problems with different networking stacks in SPL vs full U-Boot later
> on.

Done in v3. Thanks.

-- 
Jerome