Re: [PATCH net 2/2] selftests: mptcp: join: fix 'implicit EP' test

[Andrea Claudi <aclaudi@redhat.com>]

On Mon, Jun 26, 2023 at 01:32:17PM +0200, Matthieu Baerts wrote:
> Hi Andrea,
> 
> On 23/06/2023 14:19, Andrea Claudi wrote:
> > mptcp_join '001 implicit EP' test currently fails because of two
> > reasons:
> 
> Same as on patch 1/2: can you remove "001" and mention it is only
> failing when using "ip mptcp" ("-i" option) please?
>

Sure, no problem.

> > - iproute v6.3.0 does not support the implicit flag, fixed with
> >   iproute2-next commit 3a2535a41854 ("mptcp: add support for implicit
> >   flag")
> 
> Thank you for that!
> 
> Out of curiosity: why is it in iproute2-next (following net-next tree,
> for v6.5) and not in iproute2 tree (following -net / Linus tree: for v6.4)?
> 

I usually target fixes to iproute2 and new stuff to iproute2-next, no
other reason than that. But I see your point here, having this on -net
may end up in the commit not landing in the same release cycle.

Should I send v2 for this series to mptcp-next, then?

Andrea

> > - pm_nl_check_endpoint wrongly expects the ip address to be repeated two
> >   times in iproute output, and does not account for a final whitespace
> >   in it.
> > 
> > This fixes the issue trimming the whitespace in the output string and
> > removing the double address in the expected string.
> > 
> > Fixes: 69c6ce7b6eca ("selftests: mptcp: add implicit endpoint test case")
> > Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
> > ---
> >  tools/testing/selftests/net/mptcp/mptcp_join.sh | 5 +++--
> >  1 file changed, 3 insertions(+), 2 deletions(-)
> > 
> > diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> > index 5424dcacfffa..6c3525e42273 100755
> > --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
> > +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> > @@ -768,10 +768,11 @@ pm_nl_check_endpoint()
> >  	fi
> >  
> >  	if [ $ip_mptcp -eq 1 ]; then
> > +		# get line and trim trailing whitespace
> >  		line=$(ip -n $ns mptcp endpoint show $id)
> > +		line="${line% }"
> >  		# the dump order is: address id flags port dev
> > -		expected_line="$addr"
> > -		[ -n "$addr" ] && expected_line="$expected_line $addr"
> > +		[ -n "$addr" ] && expected_line="$addr"
> >  		expected_line="$expected_line $id"
> >  		[ -n "$_flags" ] && expected_line="$expected_line ${_flags//","/" "}"
> >  		[ -n "$dev" ] && expected_line="$expected_line $dev"
> 
> It looks good, no need to change anything here but later (not for -net
> anyway), we should probably parse the JSON output of "ip -j mptcp" instead.
> 
> Cheers,
> Matt
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