[PATCH v15 00/11] net: tcp: improve tcp support in legacy stack

[Tom Rini]

On Mon, Dec 23, 2024 at 01:58:41PM +0300, Mikhail Kshevetskiy wrote:

> Legacy TCP stack is bad. Here are some of the known issues:
>  * tcp packet from other connection can break a current one
>  * tcp send sequence always starts from zero
>  * bad tcp options processing
>  * strange assumptions on packet size for selective acknowledge
>  * tcp interface assumes one of the two scenarios:
>      - data downloading from remote host to a board
>      - request-response exchange with a small packets
>    so it's not possible to upload large amount of data from the
>    board to remote host.
>  * wget test generate bad tcp stream, test should fail but it passes instead
> 
> This series of patches fixes all of the above issues.
> 
> The benefits:
>  * A lot of bug was fixed
>  * Better and more reliable TCP state machine
>  * Tcp clients becomes smaller/simpler
>  * Data uploading was fixed (now it's possible to transmit a huge amount of
>    data from the board to remote host)
> 
> Modification was verified with
>  * firmware downloading via u-boot wget command
>  * fastboot over tcp
>  * netcat linux client using test netcat implementation (not included
>    to this patch series)
>  * Firefox/Chrome/Edge using test web-server implementation (not included
>    to this patch series)

This fails on the EFI self test on qemu-arm64. You can see this with
"bootefi selftest" on the platform, and the excerpt from the full
failure log at:
https://source.denx.de/u-boot/u-boot/-/jobs/984858
https://dev.azure.com/u-boot/u-boot/_build/results?buildId=10224&view=logs&s=664d8594-b731-54d7-afc5-7167226e08f3&j=52970d71-9fb7-5005-2ae1-66817be903ba
is:
Setting up 'http protocol' succeeded
Executing 'http protocol'
93.184.215.14
Packets received 5, Transfer Successful
lib/efi_selftest/efi_selftest_http.c(216):
ERROR: File not found
lib/efi_selftest/efi_selftest.c(114):
ERROR: Executing 'http protocol' failed
Tearing down 'http protocol'

-- 
Tom
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