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selftests: mptcp: improve 'fair usage on close' stability

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The mentioned test has to wait for a subflow creation failure.
The current code looks for TCP sockets in TW state and sometimes
misses the relevant event. Switch to a more stable check, looking
for the associated mib counter.

Fixes: 46e967d187ed ("selftests: mptcp: add tests for subflow creation failure")
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/257
Reported-and-tested-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paolo Abeni 2022-02-18 13:35:39 -08:00 committed by David S. Miller
parent 0cd33c5ffe
commit 5b31dda736
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/net/mptcp/mptcp_join.sh
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@ -961,7 +961,7 @@ wait_for_tw()
local ns=$1
while [ $time -lt $timeout_ms ]; do
local cnt=$(ip netns exec $ns ss -t state time-wait |wc -l)
local cnt=$(ip netns exec $ns nstat -as TcpAttemptFails | grep TcpAttemptFails | awk '{print $2}')
[ "$cnt" = 1 ] && return 1
time=$((time + 100))