[PATCH v7 00/20] Introduce the lwIP network stack

[Simon Glass]

Hi Tom,

On Fri, 2 Aug 2024 at 12:32, Tom Rini <trini at konsulko.com> wrote:
>
> On Fri, Aug 02, 2024 at 06:26:27PM +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
>
> On Pi 3 I'm again / still seeing:
> ========================================== FAILURES ===========================================
> ___________________________________ test_efi_helloworld_net ___________________________________
> test/py/tests/test_efi_loader.py:163: in test_efi_helloworld_net
>     assert expected_text in output
> E   AssertionError: assert 'Hello, world' in 'No UEFI binary known at 200000'
> ------------------------------------ Captured stdout call -------------------------------------
> U-Boot> tftpboot 200000 EFI/arm64/helloworld.efi
> Using smsc95xx_eth device
> TFTP from server 192.168.1.10; our IP address is 192.168.1.100
> Filename 'EFI/arm64/helloworld.efi'.
> Load address: 0x200000
> Loading: #
>          883.8 KiB/s
> done
> Bytes transferred = 4528 (11b0 hex)
> U-Boot> U-Boot> crc32 200000 $filesize
> crc32 for 00200000 ... 002011af ==> 2b466005
> U-Boot> U-Boot> bootefi 200000
> No UEFI binary known at 200000
> U-Boot>
> =================================== short test summary info ===================================
>
> On a configuration that works fine with the legacy network stack.

BTW the "No UEFI binary known at 200000" is that hack that I would
really like to improve on, by updating bootstd to keep track of which
images are loaded.

Regards,
SImon