netdev - Re: [ANN] net-next is OPEN

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Date: Tue, 23 Jan 2024 13:39:25 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: David Ahern <dsahern@...nel.org>
Cc: Hangbin Liu <liuhangbin@...il.com>, "netdev@...r.kernel.org"
 <netdev@...r.kernel.org>, "netdev-driver-reviewers@...r.kernel.org"
 <netdev-driver-reviewers@...r.kernel.org>
Subject: Re: [ANN] net-next is OPEN

On Tue, 23 Jan 2024 09:51:07 -0700 David Ahern wrote:
> Really cool. Thanks for spending time to make this happen.
> 
> Scanning the tests I wrote, I think most of the failures are config
> related. e.g., fib-nexthops.sh needs MPLS and those config settings are
> enabled in tools/testing/selftests/net/config.
> 
> Another one, fcnal-test, needs nettest built. From
> https://netdev-2.bots.linux.dev/vmksft-net/results/432660/36-fcnal-test-sh:
> 
> # which: no nettest in
> (/home/virtme/tools/fs/bin:/home/virtme/tools/fs/sbin:/home/virtme/tools/fs/usr/bin:/home/virtme/tools/fs/usr/sbin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin)
> 
> It is in the Makefile, so how should that dependency be defined for this
> new environment?

We run the tests with 

  make -C tools/testing/selftests TARGETS=net run_tests

the binary is there:

$ ls tools/testing/selftests/net/nettest
tools/testing/selftests/net/nettest

The script does:

if ! which nettest >/dev/null; then                                             
        PATH=$PWD:$PATH                                                         
        if ! which nettest >/dev/null; then                                     
                echo "'nettest' command not found; skipping tests"              
                exit $ksft_skip                                                 
        fi                                                                      
fi   

But that's not exactly the message that gets printed up top.
Is it coming from lib.sh? Not sure..

> Finally, how can people replicate this setup to validate changes to get
> everything work correctly?

You can run the exact scripts the CI runs, they are pretty standalone.
But they don't do any magic, really, I'd start by trying the steps I
outlined in
https://lore.kernel.org/all/20240123093834.23ea172a@kernel.org/
and if you can't repro the failure LMK, I'll share more instructions
on replicating exactly.