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test: More robust wait for pasta/passt to be ready

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When we start passt or pasta, it may take a short time to be ready to
handle packets, especially if running under valgrind.  We have a
number of semi-arbitrary fixed sleeps to account for this.

We can do this more robustly by exploiting the fact that pasta/passt
doesn't write its pidfile until it's ready to go, so if we wait for
the pidfile to be created, we can proceed with confidence.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
David Gibson 2022-09-26 20:43:38 +10:00 committed by Stefano Brivio
parent 33983de46b
commit 5b899dce7a
1 changed files with 10 additions and 5 deletions
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15
test/lib/setup
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@ -54,7 +54,9 @@ setup_passt() {
context_run passt "make clean"
context_run passt "make valgrind"
context_run_bg passt "valgrind --max-stackframe=$((4 * 1024 * 1024)) --trace-children=yes --vgdb=no --error-exitcode=1 --suppressions=test/valgrind.supp ./passt ${__opts} -f -t 10001 -u 10001 -P ${STATESETUP}/passt.pid"
sleep 5
# pidfile isn't created until passt is listening
wait_for [ -f "${STATESETUP}/passt.pid" ]
GUEST_CID=94557
context_run_bg qemu './qrap 5 qemu-system-$(uname -m)' \
@ -99,7 +101,9 @@ setup_pasta() {
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
context_run_bg passt "./pasta ${__opts} -f -t 10002 -T 10003 -u 10002 -U 10003 -P ${STATESETUP}/passt.pid ${__target_pid}"
sleep 1
# pidfile isn't created until pasta is ready
wait_for [ -f "${STATESETUP}/passt.pid" ]
}
# setup_passt_in_ns() - Set up namespace (with pasta), run qemu and passt into it
@ -129,7 +133,7 @@ setup_passt_in_ns() {
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
context_run_bg pasta "./pasta ${__opts} -t 10001,10002,10011,10012 -T 10003,10013 -u 10001,10002,10011,10012 -U 10003,10013 -P ${STATESETUP}/pasta.pid ${NSHOLDER} ${STATESETUP}/ns.hold hold"
sleep 1
wait_for [ -f "${STATESETUP}/pasta.pid" ]
__ns_pid=$(${NSHOLDER} ${STATESETUP}/ns.hold pid)
context_setup_nsenter qemu "-t ${__ns_pid} -U -n -p --preserve-credentials"
@ -155,7 +159,7 @@ setup_passt_in_ns() {
context_run passt "make"
context_run_bg passt "./passt -f ${__opts} -t 10001,10011,10021,10031 -u 10001,10011,10021,10031 -P ${STATESETUP}/passt.pid"
fi
sleep 5
wait_for [ -f "${STATESETUP}/passt.pid" ]
GUEST_CID=94557
context_run_bg qemu './qrap 5 qemu-system-$(uname -m)' \
@ -226,7 +230,7 @@ setup_two_guests() {
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
context_run_bg passt_1 "./passt -P ${STATESETUP}/passt_1.pid -f ${__opts} -t 10001 -u 10001"
sleep 1
wait_for [ -f "${STATESETUP}/passt_1.pid" ]
__opts=
[ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/passt_2.pcap"
@ -234,6 +238,7 @@ setup_two_guests() {
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
context_run_bg passt_2 "./passt -P ${STATESETUP}/passt_2.pid -f ${__opts} -t 10004 -u 10004"
wait_for [ -f "${STATESETUP}/passt_2.pid" ]
GUEST_1_CID=94557
context_run_bg qemu_1 './qrap 5 qemu-system-$(uname -m)' \