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selftests: net: amt: wait longer for connection before sending packets

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Both send_mcast4() and send_mcast6() use sleep 2 to wait for the tunnel
connection between the gateway and the relay, and for the listener
socket to be created in the LISTENER namespace.

However, tests sometimes fail because packets are sent before the
connection is fully established.

Increase the waiting time to make the tests more reliable, and use
wait_local_port_listen() to explicitly wait for the listener socket.

Fixes: c08e8baea7 ("selftests: add amt interface selftest script")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Link: https://patch.msgid.link/20260120133930.863845-1-ap420073@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Taehee Yoo
2026-01-20 13:39:30 +00:00
committed by Jakub Kicinski
parent 8215794403
commit 04708606fd
1 changed files with 5 additions and 2 deletions
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7
tools/testing/selftests/net/amt.sh
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@@ -73,6 +73,8 @@
# +------------------------+
#==============================================================================
source lib.sh
readonly LISTENER=$(mktemp -u listener-XXXXXXXX)
readonly GATEWAY=$(mktemp -u gateway-XXXXXXXX)
readonly RELAY=$(mktemp -u relay-XXXXXXXX)
@@ -246,14 +248,15 @@ test_ipv6_forward()
send_mcast4()
{
sleep 2
sleep 5
wait_local_port_listen ${LISTENER} 4000 udp
ip netns exec "${SOURCE}" bash -c \
'printf "%s %128s" 172.17.0.2 | nc -w 1 -u 239.0.0.1 4000' &
}
send_mcast6()
{
sleep 2
wait_local_port_listen ${LISTENER} 6000 udp
ip netns exec "${SOURCE}" bash -c \
'printf "%s %128s" 2001:db8:3::2 | nc -w 1 -u ff0e::5:6 6000' &
}