selftests: mptcp: add chk_subflows_total helper
commit 80775412 upstream. This patch adds a new helper chk_subflows_total(), in it use the newly added counter mptcpi_subflows_total to get the "correct" amount of subflows, including the initial one. To be compatible with old 'ss' or kernel versions not supporting this counter, get the total subflows by listing TCP connections that are MPTCP subflows: ss -ti state state established state syn-sent state syn-recv | grep -c tcp-ulp-mptcp. Reviewed-by:Matthieu Baerts <matttbe@kernel.org> Signed-off-by:
Geliang Tang <geliang.tang@suse.com> Signed-off-by:
Mat Martineau <martineau@kernel.org> Link: https://lore.kernel.org/r/20231128-send-net-next-2023107-v4-3-8d6b94150f6b@kernel.org Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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