[PATCH v5 00/20] Introduce the lwIP network stack

[Tom Rini]

On Tue, Jul 30, 2024 at 11:48:06AM +0200, Jerome Forissier wrote:
> 
> 
> On 7/25/24 19:22, Tom Rini wrote:
> > On Thu, Jul 25, 2024 at 02:57:21PM +0200, Jerome Forissier wrote:
> > 
> >> This is a rework of a patch series by Maxim Uvarov: "net/lwip: add lwip
> >> library for the network stack" [1]. The goal is to introduce the lwIP TCP/IP
> >> stack [2] [3] as an alternative to the current implementation in net/,
> >> selectable with Kconfig, and ultimately keep only lwIP if possible. Some
> >> reasons for doing so are:
> >> - Make the support of HTTPS in the wget command easier. Javier T. and
> >> Raymond M. (CC'd) have some additional lwIP and Mbed TLS patches to do
> >> so. With that it becomes possible to fetch and launch a distro installer
> >> such as Debian etc. using a secure, authenticated connection directly
> >> from the U-Boot shell. Several use cases:
> >>   * Authentication: prevent MITM attack (third party replacing the
> >> binary with a different one)
> >>   * Confidentiality: prevent third parties from grabbing a copy of the
> >> image as it is being downloaded
> >>   * Allow connection to servers that do not support plain HTTP anymore
> >> (this is becoming more and more common on the Internet these days)
> >> - Possibly benefit from additional features implemented in lwIP
> >> - Less code to maintain in U-Boot
> >>
> >> Prior to applying this series, the lwIP stack needs to be added as a
> >> Git subtree with the following command:
> >>
> >>  $  git subtree add --squash --prefix lib/lwip/lwip https://git.savannah.gnu.org/git/lwip.git STABLE-2_2_0_RELEASE
> > 
> > This is better than v4, and on the hardware platforms I could build and
> > boot on (which was most of mine except the am62x_beagleplay), the tests
> > ran and completed, including the tftp+boot a Linux kernel.
> > 
> > The bad news is CI blows up, a lot:
> > https://source.denx.de/u-boot/u-boot/-/pipelines/21764
> 
> They're all failing with: undefined reference to `tftp_start'
> The reason is I inadvertently removed the 'default y' on CMD_TFTPBOOT :/
> Fixed in v6.
> 
> > And:
> > https://dev.azure.com/u-boot/a1096300-2999-4ec4-a21a-4c22075e3771/_apis/build/builds/9014/logs/106
> > which is another Kconfig dependency problem. I don't _think_ I
> > introduced that, but since this wasn't against top of tree, I had to
> > apply the cmd/Kconfig patch manually.
> 
> What's the build command? I can see:
> 
> /bin/bash --noprofile --norc /Users/runner/work/_temp/9710a6d2-6670-4f76-81bc-990cc45b1898.sh
> 
> ...but that's not super helpful ;)

make tools-only_defconfig or so, sorry.

-- 
Tom
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