[PATCH 2/3] net: lwip: add sntp command

[Tom Rini]

On Tue, Jun 03, 2025 at 04:13:32PM +0200, Jerome Forissier wrote:
> 
> 
> On 6/3/25 16:06, Tom Rini wrote:
> > On Tue, Jun 03, 2025 at 03:49:05PM +0200, Jerome Forissier wrote:
> >> Hi Heinrich,
> >>
> >> On 6/2/25 23:23, Heinrich Schuchardt wrote:
> >>> Am 21. Mai 2025 17:14:42 MESZ schrieb Jerome Forissier <jerome.forissier at linaro.org>:
> >>>> Implement the sntp command when NET_LWIP=y.
> >>>>
> >>>> Signed-off-by: Jerome Forissier <jerome.forissier at linaro.org>
> >>>> ---
> >>>>
> >>>> cmd/Kconfig                |  13 ++--
> >>>> cmd/net-lwip.c             |   5 ++
> >>>> include/net-common.h       |  11 ++++
> >>>> lib/lwip/Makefile          |   1 +
> >>>> lib/lwip/u-boot/arch/cc.h  |   4 ++
> >>>> lib/lwip/u-boot/lwipopts.h |   4 ++
> >>>> net/lwip/Makefile          |   1 +
> >>>> net/lwip/sntp.c            | 128 +++++++++++++++++++++++++++++++++++++
> >>>> 8 files changed, 161 insertions(+), 6 deletions(-)
> >>>> create mode 100644 net/lwip/sntp.c
> >>>>
> >>>> diff --git a/cmd/Kconfig b/cmd/Kconfig
> >>>> index f21d27cb27f..58f629e1c34 100644
> >>>> --- a/cmd/Kconfig
> >>>> +++ b/cmd/Kconfig
> >>>> @@ -2061,12 +2061,6 @@ config CMD_CDP
> >>>> 	  and to retrieve configuration data including the VLAN id using the
> >>>> 	  proprietary Cisco Discovery Protocol (CDP).
> >>>>
> >>>> -config CMD_SNTP
> >>>> -	bool "sntp"
> >>>> -	select PROT_UDP
> >>>> -	help
> >>>> -	  Synchronize RTC via network
> >>>> -
> >>>> config CMD_LINK_LOCAL
> >>>> 	bool "linklocal"
> >>>> 	depends on (LIB_RAND || LIB_HW_RAND)
> >>>> @@ -2144,6 +2138,13 @@ config CMD_PING
> >>>> 	help
> >>>> 	  Send ICMP ECHO_REQUEST to network host
> >>>>
> >>>> +config CMD_SNTP
> >>>
> >>> The command should depend on RTC support.
> >>>
> >>>> +	bool "sntp"
> >>>> +	select PROT_UDP if NET
> >>>> +	select PROT_UDP_LWIP if NET_LWIP
> >>>> +	help
> >>>> +	  Synchronize RTC via network
> >>>> +
> >>>> config CMD_TFTPBOOT
> >>>> 	bool "tftp"
> >>>> 	select PROT_UDP_LWIP if NET_LWIP
> >>>> diff --git a/cmd/net-lwip.c b/cmd/net-lwip.c
> >>>> index cecf8d02555..2ffee64f97e 100644
> >>>> --- a/cmd/net-lwip.c
> >>>> +++ b/cmd/net-lwip.c
> >>>
> >>> Please, put every command into a separate file instead of duplicating the #ifdef chaos of the old network stack.
> >>
> >> While I agree that cmd/net.c is painful re. #ifdef's, I believe
> >> cmd/net-lwip.c is not bad at all. In fact I took care of having only the
> >> command wrappers in there (U_BOOT_CMD(...)), so it's just 55 lines at
> >> the moment. The implementations are in
> >> net/lwip/{dhcp,dns,ping,sntp,tftp,wget}.c. So I don't think there is
> >> a need to change that. Or I could move the U_BOOT_CMD(...) into
> >> net/lwip/*.c as well, leaving only the non-net commands under cmd/ (apart
> >> from the legacy NET stuff).
> >>
> >> Any opinions on that?
> > 
> > While there are commands outside of cmd/ they are the exception (and
> > generally ought to be moved) so if we go the route of breaking up
> > cmd/net-lwip.c I'd rather see cmd/lwip/${cmd}.c instead.
> 
> To be clear, you mean moving net/lwip/${cmd}.c into cmd/lwip/ in addition to
> splitting cmd/net-lwip.c?

Yes and I think that will make things clearer overall, thanks.

-- 
Tom
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