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selftests: mptcp: add chk_subflows_total helper

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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>
This commit is contained in:
Geliang Tang 2023-11-28 15:18:47 -08:00 committed by Jakub Kicinski
parent 06848c0f34
commit 8077541288
1 changed files with 41 additions and 1 deletions
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42
tools/testing/selftests/net/mptcp/mptcp_join.sh
View File

@ -1867,7 +1867,7 @@ chk_mptcp_info()
local cnt2
local dump_stats
print_check "mptcp_info ${info1:0:8}=$exp1:$exp2"
print_check "mptcp_info ${info1:0:15}=$exp1:$exp2"
cnt1=$(ss -N $ns1 -inmHM | mptcp_lib_get_info_value "$info1" "$info1")
cnt2=$(ss -N $ns2 -inmHM | mptcp_lib_get_info_value "$info2" "$info2")
@ -1888,6 +1888,42 @@ chk_mptcp_info()
fi
}
# $1: subflows in ns1 ; $2: subflows in ns2
# number of all subflows, including the initial subflow.
chk_subflows_total()
{
local cnt1
local cnt2
local info="subflows_total"
local dump_stats
# if subflows_total counter is supported, use it:
if [ -n "$(ss -N $ns1 -inmHM | mptcp_lib_get_info_value $info $info)" ]; then
chk_mptcp_info $info $1 $info $2
return
fi
print_check "$info $1:$2"
# if not, count the TCP connections that are in fact MPTCP subflows
cnt1=$(ss -N $ns1 -ti state established state syn-sent state syn-recv |
grep -c tcp-ulp-mptcp)
cnt2=$(ss -N $ns2 -ti state established state syn-sent state syn-recv |
grep -c tcp-ulp-mptcp)
if [ "$1" != "$cnt1" ] || [ "$2" != "$cnt2" ]; then
fail_test "got subflows $cnt1:$cnt2 expected $1:$2"
dump_stats=1
else
print_ok
fi
if [ "$dump_stats" = 1 ]; then
ss -N $ns1 -ti
ss -N $ns2 -ti
fi
}
chk_link_usage()
{
local ns=$1
@ -3431,10 +3467,12 @@ userspace_tests()
chk_join_nr 1 1 1
chk_add_nr 1 1
chk_mptcp_info subflows 1 subflows 1
chk_subflows_total 2 2
chk_mptcp_info add_addr_signal 1 add_addr_accepted 1
userspace_pm_rm_sf_addr_ns1 10.0.2.1 10
chk_rm_nr 1 1 invert
chk_mptcp_info subflows 0 subflows 0
chk_subflows_total 1 1
kill_events_pids
wait $tests_pid
fi
@ -3451,9 +3489,11 @@ userspace_tests()
userspace_pm_add_sf 10.0.3.2 20
chk_join_nr 1 1 1
chk_mptcp_info subflows 1 subflows 1
chk_subflows_total 2 2
userspace_pm_rm_sf_addr_ns2 10.0.3.2 20
chk_rm_nr 1 1
chk_mptcp_info subflows 0 subflows 0
chk_subflows_total 1 1
kill_events_pids
wait $tests_pid
fi