selftests: mptcp: simult flows: re-adapt BW

Recently, the bandwidth in simult flows selftest has been reduced. The
idea was to improve the situation in slow environments. It helped in
some, but not in all of them. With a longer transfer, it is also
possible to get more instabilities along the way.

We can increase a bit the rate limit for the unbalanced bandwidth cases,
but limit the total of the two links to 20 Mbps, like the balanced
bandwidth cases. The same 3:1 ratio is still being used like before, not
to change the nature of the test.

Fixes: 5e2f3c6 ("selftests: mptcp: decrease BW in simult flows")
Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>
Reviewed-by: Mat Martineau <[email protected]>

tools/testing/selftests/net/mptcp/simult_flows.sh

@@ -286,9 +286,9 @@ run_test 10 10 0 0 "balanced bwidth"
 run_test 10 10 1 25 "balanced bwidth with unbalanced delay"
 
 # we still need some additional infrastructure to pass the following test-cases
-run_test 10 3 0 0 "unbalanced bwidth"
-run_test 10 3 1 25 "unbalanced bwidth with unbalanced delay"
-run_test 10 3 25 1 "unbalanced bwidth with opposed, unbalanced delay"
+run_test 15 5 0 0 "unbalanced bwidth"
+run_test 15 5 1 25 "unbalanced bwidth with unbalanced delay"
+run_test 15 5 25 1 "unbalanced bwidth with opposed, unbalanced delay"
 
 mptcp_lib_result_print_all_tap
 exit $ret