[PATCH v4 1/3] net: ipv6: Add support for default gateway discovery.

[Sergei Antonov]

On Sat, 6 May 2023 at 17:53, Tom Rini <trini at konsulko.com> wrote:
>
> On Fri, Apr 21, 2023 at 05:08:21PM -0700, emohandesi at linux.microsoft.com wrote:
>
> > From: Ehsan Mohandesi <emohandesi at linux.microsoft.com>
> >
> > In IPv6, the default gateway and prefix length are determined by receiving
> > a router advertisement as defined in -
> > https://www.rfc-editor.org/rfc/rfc4861.
> >
> > Add support for sending router solicitation (RS) and processing router
> > advertisements (RA).
> >
> > If the RA has prefix info option and following conditions are met, then
> > gatewayip6 and net_prefix_length of ip6addr env variables are initialized.
> > These are later consumed by IPv6 code for non-local destination IP.
> >
> > - "Router Lifetime" != 0
> > - Prefix is NOT link-local prefix (0xfe80::/10)
> > - L flag is 1
> > - "Valid Lifetime" != 0
> >
> > Timing Parameters:
> > - MAX_RTR_SOLICITATION_DELAY (0-1s)
> > - RTR_SOLICITATION_INTERVAL (4s) (min retransmit delay)
> > - MAX_RTR_SOLICITATIONS (3 RS transmissions)
> >
> > The functionality is enabled by CONFIG_IPV6_ROUTER_DISCOVERY and invoked
> > automatically from net_init_loop().
> >
> > Signed-off-by: Ehsan Mohandesi <emohandesi at linux.microsoft.com>
> > Tested-by: Viacheslav Mitrofanov <v.v.mitrofanov at yadro.com>Reviewed-by:
> > Tested-by: Viacheslav Mitrofanov <v.v.mitrofanov at yadro.com>
> > Reviewed-by: Viacheslav Mitrofanov <v.v.mitrofanov at yadro.com>
> > Tested-by: Sergei Antonov <saproj at gmail.com>
> > Reviewed-by: Sergei Antonov <saproj at gmail.com>
>
> Applied to u-boot/master, thanks!

Hey! It was added without "__packed", see
https://lists.denx.de/pipermail/u-boot/2023-May/517370.html