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selftests: mptcp: join: fix 'delete and re-add' test

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commit aaf2123a5c upstream.

mptcp_join 'delete and re-add' test fails when using ip mptcp:

  $ ./mptcp_join.sh -iI
  <snip>
  002 delete and re-add                    before delete[ ok ]
                                           mptcp_info subflows=1         [ ok ]
  Error: argument "ADDRESS" is wrong: invalid for non-zero id address
                                           after delete[fail] got 2:2 subflows expected 1

This happens because endpoint delete includes an ip address while id is
not 0, contrary to what is indicated in the ip mptcp man page:

"When used with the delete id operation, an IFADDR is only included when
the ID is 0."

This fixes the issue using the $addr variable in pm_nl_del_endpoint()
only when id is 0.

Fixes: 34aa6e3bcc ("selftests: mptcp: add ip mptcp wrappers")
Cc: stable@vger.kernel.org
Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/20230803-upstream-net-20230803-misc-fixes-6-5-v1-1-6671b1ab11cc@tessares.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andrea Claudi 2023-08-03 18:27:27 +02:00 committed by Greg Kroah-Hartman
parent a537fd9096
commit aae988c096
1 changed files with 1 additions and 0 deletions
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1
tools/testing/selftests/net/mptcp/mptcp_join.sh
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@ -650,6 +650,7 @@ pm_nl_del_endpoint()
local addr=$3
if [ $ip_mptcp -eq 1 ]; then
[ $id -ne 0 ] && addr=''
ip -n $ns mptcp endpoint delete id $id $addr
else
ip netns exec $ns ./pm_nl_ctl del $id $addr