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selftests: mptcp: add a test for mptcp_diag_dump_one

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This patch introduces a new 'chk_diag' test in diag.sh. It retrieves
the token for a specified MPTCP socket (msk) using the 'ss' command and
then accesses the 'mptcp_diag_dump_one' in kernel via ./mptcp_diag
to verify if the correct token is returned.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/524
Signed-off-by: Gang Yan <yangang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250228-net-next-mptcp-coverage-small-opti-v1-2-f933c4275676@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Gang Yan 2025-02-28 15:38:36 +01:00 committed by Jakub Kicinski
parent 00f5e338cf
commit ba24001665
1 changed files with 27 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

27
tools/testing/selftests/net/mptcp/diag.sh
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@ -200,6 +200,32 @@ chk_msk_cestab()
"${expected}" "${msg}" "" "${expected}" "${msg}" ""
} }
chk_dump_one()
{
local ss_token
local token
local msg
ss_token="$(ss -inmHMN $ns | grep 'token:' |\
head -n 1 |\
sed 's/.*token:\([0-9a-f]*\).*/\1/')"
token="$(ip netns exec $ns ./mptcp_diag -t $ss_token |\
awk -F':[ \t]+' '/^token/ {print $2}')"
msg="....chk dump_one"
mptcp_lib_print_title "$msg"
if [ -n "$ss_token" ] && [ "$ss_token" = "$token" ]; then
mptcp_lib_pr_ok
mptcp_lib_result_pass "${msg}"
else
mptcp_lib_pr_fail "expected $ss_token found $token"
mptcp_lib_result_fail "${msg}"
ret=${KSFT_FAIL}
fi
}
msk_info_get_value() msk_info_get_value()
{ {
local port="${1}" local port="${1}"
@ -290,6 +316,7 @@ chk_msk_remote_key_nr 2 "....chk remote_key"
chk_msk_fallback_nr 0 "....chk no fallback" chk_msk_fallback_nr 0 "....chk no fallback"
chk_msk_inuse 2 chk_msk_inuse 2
chk_msk_cestab 2 chk_msk_cestab 2
chk_dump_one
flush_pids flush_pids
chk_msk_inuse 0 "2->0" chk_msk_inuse 0 "2->0"