NTP client recommendation for RTEMS?

[Chris Johns]

On 24/2/2022 2:03 am, Sebastian Huber wrote:
> On 22/02/2022 21:25, Joel Sherrill wrote:
>> On Tue, Feb 22, 2022, 1:45 PM Sebastian Huber
>> <sebastian.huber at embedded-brains.de
>> <mailto:sebastian.huber at embedded-brains.de>> wrote:
>>
>>     On 22/02/2022 20:30, Joel Sherrill wrote:
>>      > On Tue, Feb 22, 2022 at 1:21 PM Sebastian Huber
>>      > <sebastian.huber at embedded-brains.de
>>     <mailto:sebastian.huber at embedded-brains.de>>  wrote:
>>      >> On 22/02/2022 19:22, Joel Sherrill wrote:
>>      >>> Are you planning to get the NTP server side of the freebsd-org
>>     code working?
>>      >>>
>>      >>> Or get it building but not testing it?
>>      >>>
>>      >>> Or just focusing on building and testing JUST the client part.
>>      >> I ported the ntpd from FreeBSD to an older version of the
>>     libbsd. I only
>>      >> tested the client part and this seems to work fine after some
>>     basic tests.
>>      > OK. That matches what I expected. Is the libbsd version to old to
>>     merge
>>      > against? Any plans to merge this?
>>      >
>>      > Alternatively, is your work available to be used as the basis for
>>     updating
>>      > to 6-freebsd-12?
>>
>>     I have a very long TODO list. Actually, I started with the current
>>     6-freebsd-12 branch, but it didn't work, so in principle generating
>>     patches for this branch should be easy.
>>
>> Thanks. If we end up working on this, we will sync with you to help and avoid
>> duplicate work.
> 
> I pushed the NTP work to my github repository:
> 
> https://github.com/sebhub/rtems-libbsd/tree/6-freebsd-12-ntpd
> 
> I think we have to revert some changes done for the NFS support. 

Please do not. I would prefer the problem be discussed and understood first and
alternatives considered.

> For example, I don't know why the system call support for kqueue and the sockets> moved to a separate file and was changed to use the FreeBSD file descriptors.

The change lets us use FreeBSD fd support and after this work I think the change
is major improvement over the implementation I had to work with. Using RTEMS
direct fd support in mixed ways with VFS in LibBSD would only make things confusing.

Chris