Re: [PATCH net-next v5 9/9] selftests/vsock: add namespace tests

On Wed, Aug 27, 2025 at 05:31:37PM -0700, Bobby Eshleman wrote:

From: Bobby Eshleman bobbyeshleman@meta.com

Add tests for namespace support in vsock. Use socat for basic connection

Are netns tests skipped if the kernel doesn't support it?

Thanks, Stefano

failure tests and vsock_test for full functionality tests when communication is expected to succeed. vsock_test is not used for failure cases because in theory vsock_test could allow connection and some traffic flow but fail on some other case (e.g., fail on MSG_ZEROCOPY).

Tests cover all cases of clients and servers being in all variants of local ns, global ns, host process, and VM process.

Legacy tests are retained and executed in the init ns.

Signed-off-by: Bobby Eshleman bobbyeshleman@meta.com

---

Changes in v5:

• use /proc/sys/net/vsock/ns_mode
• clarify logic of tests that reuse the same VM and tests that require

netns setup

• fix unassigned BUILD bug

---

tools/testing/selftests/vsock/vmtest.sh | 913 ++++++++++++++++++++++++++++---- 1 file changed, 808 insertions(+), 105 deletions(-)

diff --git a/tools/testing/selftests/vsock/vmtest.sh b/tools/testing/selftests/vsock/vmtest.sh index 5e36d1068f6f..9d830eb7e829 100755 --- a/tools/testing/selftests/vsock/vmtest.sh +++ b/tools/testing/selftests/vsock/vmtest.sh @@ -7,6 +7,7 @@ # * virtme-ng # * busybox-static (used by virtme-ng) # * qemu (used by virtme-ng) +# * socat

readonly SCRIPT_DIR="$(cd -P -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)" readonly KERNEL_CHECKOUT=$(realpath "${SCRIPT_DIR}"/../../../../) @@ -23,7 +24,7 @@ readonly VSOCK_CID=1234 readonly WAIT_PERIOD=3 readonly WAIT_PERIOD_MAX=60 readonly WAIT_TOTAL=$(( WAIT_PERIOD * WAIT_PERIOD_MAX )) -readonly QEMU_PIDFILE=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid) +readonly WAIT_QEMU=5

# virtme-ng offers a netdev for ssh when using "--ssh", but we also need a # control port forwarded for vsock_test. Because virtme-ng doesn't support @@ -33,23 +34,125 @@ readonly QEMU_PIDFILE=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid) # add the kernel cmdline options that virtme-init uses to setup the interface. readonly QEMU_TEST_PORT_FWD="hostfwd=tcp::${TEST_HOST_PORT}-:${TEST_GUEST_PORT}" readonly QEMU_SSH_PORT_FWD="hostfwd=tcp::${SSH_HOST_PORT}-:${SSH_GUEST_PORT}" -readonly QEMU_OPTS="\

• -netdev user,id=n0,${QEMU_TEST_PORT_FWD},${QEMU_SSH_PORT_FWD} \
  

• -device virtio-net-pci,netdev=n0 \
  

• -device vhost-vsock-pci,guest-cid=${VSOCK_CID} \
  

• --pidfile ${QEMU_PIDFILE} \
  

-" readonly KERNEL_CMDLINE="\ virtme.dhcp net.ifnames=0 biosdevname=0 \ virtme.ssh virtme_ssh_channel=tcp virtme_ssh_user=$USER \ " readonly LOG=$(mktemp /tmp/vsock_vmtest_XXXX.log) -readonly TEST_NAMES=(vm_server_host_client vm_client_host_server vm_loopback) +readonly TEST_NAMES=(

• vm_server_host_client
• vm_client_host_server
• vm_loopback
• host_vsock_ns_mode_ok
• host_vsock_ns_mode_write_once_ok
• global_same_cid_fails
• local_same_cid_ok
• global_local_same_cid_ok
• local_global_same_cid_ok
• diff_ns_global_host_connect_to_global_vm_ok
• diff_ns_global_host_connect_to_local_vm_fails
• diff_ns_global_vm_connect_to_global_host_ok
• diff_ns_global_vm_connect_to_local_host_fails
• diff_ns_local_host_connect_to_local_vm_fails
• diff_ns_local_vm_connect_to_local_host_fails
• diff_ns_global_to_local_loopback_local_fails
• diff_ns_local_to_global_loopback_fails
• diff_ns_local_to_local_loopback_fails
• diff_ns_global_to_global_loopback_ok
• same_ns_local_loopback_ok
• same_ns_local_host_connect_to_local_vm_ok
• same_ns_local_vm_connect_to_local_host_ok

+)

readonly TEST_DESCS=(

• # vm_server_host_client "Run vsock_test in server mode on the VM and in client mode on the host."
• # vm_client_host_server "Run vsock_test in client mode on the VM and in server mode on the host."
• # vm_loopback "Run vsock_test using the loopback transport in the VM."
• # host_vsock_ns_mode_ok
• "Check /proc/sys/net/vsock/ns_mode strings on the host."
• # host_vsock_ns_mode_write_once_ok
• "Check /proc/sys/net/vsock/ns_mode is write-once on the host."
• # global_same_cid_fails
• "Check QEMU fails to start two VMs with same CID in two different global namespaces."
• # local_same_cid_ok
• "Check QEMU successfully starts two VMs with same CID in two different local namespaces."
• # global_local_same_cid_ok
• "Check QEMU successfully starts one VM in a global ns and then another VM in a local ns with the same CID."
• # local_global_same_cid_ok
• "Check QEMU successfully starts one VM in a local ns and then another VM in a global ns with the same CID."
• # diff_ns_global_host_connect_to_global_vm_ok
• "Run vsock_test client in global ns with server in VM in another global ns."
• # diff_ns_global_host_connect_to_local_vm_fails
• "Run socat to test a process in a global ns fails to connect to a VM in a local ns."
• # diff_ns_global_vm_connect_to_global_host_ok
• "Run vsock_test client in VM in a global ns with server in another global ns."
• # diff_ns_global_vm_connect_to_local_host_fails
• "Run socat to test a VM in a global ns fails to connect to a host process in a local ns."
• # diff_ns_local_host_connect_to_local_vm_fails
• "Run socat to test a host process in a local ns fails to connect to a VM in another local ns."
• # diff_ns_local_vm_connect_to_local_host_fails
• "Run socat to test a VM in a local ns fails to connect to a host process in another local ns."
• # diff_ns_global_to_local_loopback_local_fails
• "Run socat to test a loopback vsock in a global ns fails to connect to a vsock in a local ns."
• # diff_ns_local_to_global_loopback_fails
• "Run socat to test a loopback vsock in a local ns fails to connect to a vsock in a global ns."
• # diff_ns_local_to_local_loopback_fails
• "Run socat to test a loopback vsock in a local ns fails to connect to a vsock in another local ns."
• # diff_ns_global_to_global_loopback_ok
• "Run socat to test a loopback vsock in a global ns successfully connects to a vsock in another global ns."
• # same_ns_local_loopback_ok
• "Run socat to test a loopback vsock in a local ns successfully connects to a vsock in the same ns."
• # same_ns_local_host_connect_to_local_vm_ok
• "Run vsock_test client in a local ns with server in VM in same ns."
• # same_ns_local_vm_connect_to_local_host_ok
• "Run vsock_test client in VM in a local ns with server in same ns."

+)

+readonly USE_SHARED_VM=(vm_server_host_client vm_client_host_server vm_loopback) +readonly USE_INIT_NETNS=(

• global_same_cid_fails
• local_same_cid_ok
• global_local_same_cid_ok
• local_global_same_cid_ok
• diff_ns_global_host_connect_to_global_vm_ok
• diff_ns_global_host_connect_to_local_vm_fails
• diff_ns_global_vm_connect_to_global_host_ok
• diff_ns_global_vm_connect_to_local_host_fails
• diff_ns_local_host_connect_to_local_vm_fails
• diff_ns_local_vm_connect_to_local_host_fails
• diff_ns_global_to_local_loopback_local_fails
• diff_ns_local_to_global_loopback_fails
• diff_ns_local_to_local_loopback_fails
• diff_ns_global_to_global_loopback_ok
• same_ns_local_loopback_ok
• same_ns_local_host_connect_to_local_vm_ok
• same_ns_local_vm_connect_to_local_host_ok

) +readonly MODES=("local" "global")

readonly LOG_LEVEL_DEBUG=0 readonly LOG_LEVEL_INFO=1 @@ -58,6 +161,12 @@ readonly LOG_LEVEL_ERROR=3

VERBOSE="${LOG_LEVEL_WARN}"

+# Test pass/fail counters +cnt_pass=0 +cnt_fail=0 +cnt_skip=0 +cnt_total=0

usage() { local name local desc @@ -77,7 +186,7 @@ usage() { for ((i = 0; i < ${#TEST_NAMES[@]}; i++)); do name=${TEST_NAMES[${i}]} desc=${TEST_DESCS[${i}]}

• printf "\t%-35s%-35s\n" "${name}" "${desc}"
  

• printf "\t%-55s%-35s\n" "${name}" "${desc}"
  

  done echo

@@ -89,21 +198,87 @@ die() { exit "${KSFT_FAIL}" }

+add_namespaces() {

• # add namespaces local0, local1, global0, and global1
• for mode in "${MODES[@]}"; do

• ip netns add "${mode}0" 2>/dev/null
  

• ip netns add "${mode}1" 2>/dev/null
  

• done

+}

+init_namespaces() {

• for mode in "${MODES[@]}"; do

• ns_set_mode "${mode}0" "${mode}"
  

• ns_set_mode "${mode}1" "${mode}"
  

• log_host "set ns ${mode}0 to mode ${mode}"
  

• log_host "set ns ${mode}1 to mode ${mode}"
  

• # we need lo for qemu port forwarding
  

• ip netns exec "${mode}0" ip link set dev lo up
  

• ip netns exec "${mode}1" ip link set dev lo up
  

• done

+}

+del_namespaces() {

• for mode in "${MODES[@]}"; do

• ip netns del "${mode}0"
  

• ip netns del "${mode}1"
  

• log_host "removed ns ${mode}0"
  

• log_host "removed ns ${mode}1"
  

• done &>/dev/null

+}

+ns_set_mode() {

• local ns=$1
• local mode=$2
• echo "${mode}" | ip netns exec "${ns}" \

• tee /proc/sys/net/vsock/ns_mode &>/dev/null
  

+}

vm_ssh() {

• ssh -q -o UserKnownHostsFile=/dev/null -p ${SSH_HOST_PORT} localhost "$@"

• local ns_exec
• if [[ "${1}" == none ]]; then

• local ns_exec=""
  

• else

• local ns_exec="ip netns exec ${1}"
  

• fi
• shift
• ${ns_exec} ssh -q -o UserKnownHostsFile=/dev/null -p ${SSH_HOST_PORT} localhost $*
• return $?

}

cleanup() {

• if [[ -s "${QEMU_PIDFILE}" ]]; then

• pkill -SIGTERM -F "${QEMU_PIDFILE}" > /dev/null 2>&1
  

• fi

• del_namespaces

+}

• # If failure occurred during or before qemu start up, then we need
• # to clean this up ourselves.
• if [[ -e "${QEMU_PIDFILE}" ]]; then

• rm "${QEMU_PIDFILE}"
  

• fi

+terminate_pidfiles() {

• local pidfile
• for pidfile in "$@"; do

• if [[ -s "${pidfile}" ]]; then
  

• 	pkill -SIGTERM -F "${pidfile}" 2>&1 > /dev/null
  

• fi
  

• # If failure occurred during or before qemu start up, then we need
  

• # to clean this up ourselves.
  

• if [[ -e "${pidfile}" ]]; then
  

• 	rm -f "${pidfile}"
  

• fi
  

• done

+}

+terminate_pids() {

• local pid
• for pid in "$@"; do

• kill -SIGTERM "${pid}" &>/dev/null || :
  

• done

}

check_args() { @@ -133,7 +308,7 @@ check_args() { }

check_deps() {

• for dep in vng ${QEMU} busybox pkill ssh; do

• for dep in vng ${QEMU} busybox pkill ssh socat; do if [[ ! -x $(command -v "${dep}") ]]; then echo -e "skip: dependency ${dep} not found!\n" exit "${KSFT_SKIP}"

@@ -170,6 +345,20 @@ check_vng() { fi }

+check_socat() {

• local support_string
• support_string="$(socat -V)"
• if [[ "${support_string}" != *"WITH_VSOCK 1"* ]]; then

• die "err: socat is missing vsock support"
  

• fi
• if [[ "${support_string}" != *"WITH_UNIX 1"* ]]; then

• die "err: socat is missing unix support"
  

• fi

+}

handle_build() { if [[ ! "${BUILD}" -eq 1 ]]; then return @@ -194,9 +383,14 @@ handle_build() { }

vm_start() {

• local cid=$1

• local ns=$2

• local pidfile=$3 local logfile=/dev/null local verbose_opt=""

• local qemu_opts="" local kernel_opt=""

• local ns_exec="" local qemu

  qemu=$(command -v "${QEMU}")

@@ -206,27 +400,37 @@ vm_start() { logfile=/dev/stdout fi

• qemu_opts="\

•  -netdev user,id=n0,${QEMU_TEST_PORT_FWD},${QEMU_SSH_PORT_FWD} \
  

•  -device virtio-net-pci,netdev=n0 \
  

• ${QEMU_OPTS} -device vhost-vsock-pci,guest-cid=${cid} \
  

• --pidfile ${pidfile}
  

• "
• if [[ "${BUILD}" -eq 1 ]]; then kernel_opt="${KERNEL_CHECKOUT}" fi

• vng \

• if [[ "${ns}" != "none" ]]; then

• ns_exec="ip netns exec ${ns}"
  

• fi
• ${ns_exec} vng \ --run \ ${kernel_opt} \ ${verbose_opt} \

• --qemu-opts="${QEMU_OPTS}" \
  

• --qemu-opts="${qemu_opts}" \
  

  --qemu="${qemu}" \ --user root \ --append "${KERNEL_CMDLINE}" \ --rw &> ${logfile} &

• if ! timeout ${WAIT_TOTAL} \

• bash -c 'while [[ ! -s '"${QEMU_PIDFILE}"' ]]; do sleep 1; done; exit 0'; then
  

• die "failed to boot VM"
  

• fi

• timeout "${WAIT_QEMU}" \

• bash -c 'while [[ ! -s '"${pidfile}"' ]]; do sleep 1; done; exit 0'
  

}

vm_wait_for_ssh() {

• local ns=$1 local i

  i=0

@@ -234,7 +438,8 @@ vm_wait_for_ssh() { if [[ ${i} -gt ${WAIT_PERIOD_MAX} ]]; then die "Timed out waiting for guest ssh" fi

• if vm_ssh -- true; then
  

• if vm_ssh "${ns}" -- true; then
  break
  

  fi i=$(( i + 1 ))

@@ -269,6 +474,7 @@ wait_for_listener() grep -q "${pattern}"; then break fi

• sleep "${interval}" done

@@ -278,17 +484,29 @@ wait_for_listener() }

vm_wait_for_listener() {

• local port=$1

• local ns=$1
• local port=$2
• log "Waiting for listener on port ${port} on vm"

• vm_ssh <<EOF

• vm_ssh "${ns}" <<EOF

$(declare -f wait_for_listener) wait_for_listener ${port} ${WAIT_PERIOD} ${WAIT_PERIOD_MAX} EOF }

host_wait_for_listener() {

• wait_for_listener "${TEST_HOST_PORT_LISTENER}" "${WAIT_PERIOD}" "${WAIT_PERIOD_MAX}"

• local ns=$1

• local port=$2

• if [[ "${ns}" == none ]]; then

• wait_for_listener "${port}" "${WAIT_PERIOD}" "${WAIT_PERIOD_MAX}"
  

• else

• ip netns exec "${ns}" bash <<-EOF
  

• 	$(declare -f wait_for_listener)
  

• 	wait_for_listener ${port} ${WAIT_PERIOD} ${WAIT_PERIOD_MAX}
  

• EOF
  

• fi

}

log() { @@ -427,51 +645,506 @@ test_vm_client_host_server() { }

test_vm_loopback() {

• vm_ssh "none" modprobe vsock_loopback || : vm_vsock_test "none" "server" 1 "${TEST_HOST_PORT_LISTENER}" vm_vsock_test "none" "client" "127.0.0.1" 1 "${TEST_HOST_PORT_LISTENER}"

}

+test_host_vsock_ns_mode_ok() {

• add_namespaces

• for mode in "${MODES[@]}"; do

• if ! ns_set_mode "${mode}0" "${mode}"; then
  

• 	del_namespaces
  

• 	return "${KSFT_FAIL}"
  

• fi
  

• done

• del_namespaces

}

-test_vm_client_host_server() { +test_host_vsock_ns_mode_write_once_ok() {

• add_namespaces

• ${VSOCK_TEST} \

• --mode "server" \
  

• --control-port "${TEST_HOST_PORT_LISTENER}" \
  

• --peer-cid "${VSOCK_CID}" 2>&1 | log_host &
  

• for mode in "${MODES[@]}"; do

• local ns="${mode}0"
  

• if ! ns_set_mode "${ns}" "${mode}"; then
  

• 	del_namespaces
  

• 	return "${KSFT_FAIL}"
  

• fi
  
  

• host_wait_for_listener

• # try writing again and expect failure
  

• if ns_set_mode "${ns}" "${mode}"; then
  

• 	del_namespaces
  

• 	return "${KSFT_FAIL}"
  

• fi
  

• done

• vm_ssh -- "${VSOCK_TEST}" \

• --mode=client \
  

• --control-host=10.0.2.2 \
  

• --peer-cid=2 \
  

• --control-port="${TEST_HOST_PORT_LISTENER}" 2>&1 | log_guest
  

• del_namespaces

• return $?

• return "${KSFT_PASS}"

}

-test_vm_loopback() {

• local port=60000 # non-forwarded local port

+namespaces_can_boot_same_cid() {

• local ns0=$1
• local ns1=$2
• local pidfile1 pidfile2
• local cid=20
• readonly cid
• local rc

• vm_ssh -- "${VSOCK_TEST}" \

• --mode=server \
  

• --control-port="${port}" \
  

• --peer-cid=1 2>&1 | log_guest &
  

• pidfile1=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid)
• vm_start "${cid}" "${ns0}" "${pidfile1}"

• vm_wait_for_listener "${port}"

• pidfile2=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid)
• vm_start "${cid}" "${ns1}" "${pidfile2}"

• vm_ssh -- "${VSOCK_TEST}" \

• --mode=client \
  

• --control-host="127.0.0.1" \
  

• --control-port="${port}" \
  

• --peer-cid=1 2>&1 | log_guest
  

• rc=$?
• terminate_pidfiles "${pidfile1}" "${pidfile2}"

• return $?

• return $rc

+}

+test_global_same_cid_fails() {

• if namespaces_can_boot_same_cid "global0" "global1"; then

• return "${KSFT_FAIL}"
  

• fi
• return "${KSFT_PASS}"

+}

+test_local_global_same_cid_ok() {

• if namespaces_can_boot_same_cid "local0" "global0"; then

• return "${KSFT_PASS}"
  

• fi
• return "${KSFT_FAIL}"

+}

+test_global_local_same_cid_ok() {

• if namespaces_can_boot_same_cid "global0" "local0"; then

• return "${KSFT_PASS}"
  

• fi
• return "${KSFT_FAIL}"

+}

+test_local_same_cid_ok() {

• if namespaces_can_boot_same_cid "local0" "local0"; then

• return "${KSFT_FAIL}"
  

• fi
• return "${KSFT_PASS}"

+}

+test_diff_ns_global_host_connect_to_global_vm_ok() {

• local pids pid pidfile
• local ns0 ns1 port
• declare -a pids
• local unixfile
• ns0="global0"
• ns1="global1"
• port=1234
• local rc
• pidfile=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid)
• if ! vm_start "${VSOCK_CID}" "${ns0}" "${pidfile}"; then

• return "${KSFT_FAIL}"
  

• fi
• unixfile=$(mktemp -u /tmp/XXXX.sock)
• ip netns exec "${ns1}" \

• socat TCP-LISTEN:"${TEST_HOST_PORT}",fork \
  

• 	UNIX-CONNECT:"${unixfile}" &
  

• pids+=($!)
• host_wait_for_listener "${ns1}" "${TEST_HOST_PORT}"
• ip netns exec "${ns0}" socat UNIX-LISTEN:"${unixfile}",fork \

• TCP-CONNECT:localhost:"${TEST_HOST_PORT}" &
  

• pids+=($!)
• vm_vsock_test "${ns0}" "server" 2 "${TEST_GUEST_PORT}"
• vm_wait_for_listener "${ns0}" "${TEST_GUEST_PORT}"
• host_vsock_test "${ns1}" "client" "127.0.0.1" "${VSOCK_CID}" "${TEST_HOST_PORT}"
• rc=$?
• for pid in "${pids[@]}"; do

• if [[ "$(jobs -p)" = *"${pid}"* ]]; then
  

• 	kill -SIGTERM "${pid}" &>/dev/null
  

• fi
  

• done
• terminate_pidfiles "${pidfile}"
• if [[ $rc -ne 0 ]]; then

• return "${KSFT_FAIL}"
  

• fi
• return "${KSFT_PASS}"

+}

+test_diff_ns_global_host_connect_to_local_vm_fails() {

• local ns0="global0"
• local ns1="local0"
• local port=12345
• local pidfile
• local result
• local pid
• outfile=$(mktemp)
• pidfile=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid)
• if ! vm_start "${VSOCK_CID}" "${ns1}" "${pidfile}"; then

• log_host "failed to start vm (cid=${VSOCK_CID}, ns=${ns0})"
  

• return $KSFT_FAIL
  

• fi
• vm_wait_for_ssh "${ns1}"
• vm_ssh "${ns1}" -- socat VSOCK-LISTEN:"${port}" STDOUT > "${outfile}" &
• echo TEST | ip netns exec "${ns0}" \

• socat STDIN VSOCK-CONNECT:"${VSOCK_CID}":"${port}" 2>/dev/null
  

• terminate_pidfiles "${pidfile}"
• result=$(cat "${outfile}")
• rm -f "${outfile}"
• if [[ "${result}" != TEST ]]; then

• return $KSFT_PASS
  

• fi
• return $KSFT_FAIL

+}

+test_diff_ns_global_vm_connect_to_global_host_ok() {

• local ns0="global0"
• local ns1="global1"
• local port=12345
• local unixfile
• local pidfile
• local pids
• declare -a pids
• log_host "Setup socat bridge from ns ${ns0} to ns ${ns1} over port ${port}"
• unixfile=$(mktemp -u /tmp/XXXX.sock)
• ip netns exec "${ns0}" \

• socat TCP-LISTEN:"${port}" UNIX-CONNECT:"${unixfile}" &
  

• pids+=($!)
• ip netns exec "${ns1}" \

• socat UNIX-LISTEN:"${unixfile}" TCP-CONNECT:127.0.0.1:"${port}" &
  

• pids+=($!)
• log_host "Launching ${VSOCK_TEST} in ns ${ns1}"
• host_vsock_test "${ns1}" "server" "${VSOCK_CID}" "${port}"
• pidfile=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid)
• if ! vm_start "${VSOCK_CID}" "${ns0}" "${pidfile}"; then

• log_host "failed to start vm (cid=${cid}, ns=${ns0})"
  

• terminate_pids "${pids[@]}"
  

• rm -f "${unixfile}"
  

• return $KSFT_FAIL
  

• fi
• vm_wait_for_ssh "${ns0}"
• vm_vsock_test "${ns0}" "client" "10.0.2.2" 2 "${port}"
• rc=$?
• terminate_pidfiles "${pidfile}"
• terminate_pids "${pids[@]}"
• rm -f "${unixfile}"
• if [[ ! $rc -eq 0 ]]; then

• return "${KSFT_FAIL}"
  

• fi
• return "${KSFT_PASS}"

+}

+test_diff_ns_global_vm_connect_to_local_host_fails() {

• local ns0="global0"
• local ns1="local0"
• local port=12345
• local pidfile
• local result
• local pid
• log_host "Launching socat in ns ${ns1}"
• outfile=$(mktemp)
• ip netns exec "${ns1}" socat VSOCK-LISTEN:${port} STDOUT &> "${outfile}" &
• pid=$!
• pidfile=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid)
• if ! vm_start "${VSOCK_CID}" "${ns0}" "${pidfile}"; then

• log_host "failed to start vm (cid=${cid}, ns=${ns0})"
  

• terminate_pids "${pid}"
  

• rm -f "${outfile}"
  

• return $KSFT_FAIL
  

• fi
• vm_wait_for_ssh "${ns0}"
• vm_ssh "${ns0}" -- \

• bash -c "echo TEST | socat STDIN VSOCK-CONNECT:2:${port}" 2>&1 | log_guest
  

• terminate_pidfiles "${pidfile}"
• terminate_pids "${pid}"
• result=$(cat "${outfile}")
• rm -f "${outfile}"
• if [[ "${result}" != TEST ]]; then

• return "${KSFT_PASS}"
  

• fi
• return "${KSFT_FAIL}"

+}

+test_diff_ns_local_host_connect_to_local_vm_fails() {

• local ns0="local0"
• local ns1="local1"
• local port=12345
• local pidfile
• local result
• local pid
• outfile=$(mktemp)
• pidfile=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid)
• if ! vm_start "${VSOCK_CID}" "${ns1}" "${pidfile}"; then

• log_host "failed to start vm (cid=${cid}, ns=${ns0})"
  

• return $KSFT_FAIL
  

• fi
• vm_wait_for_ssh "${ns1}"
• vm_ssh "${ns1}" -- socat VSOCK-LISTEN:"${port}" STDOUT > "${outfile}" &
• echo TEST | ip netns exec "${ns0}" \

• socat STDIN VSOCK-CONNECT:"${VSOCK_CID}":"${port}" 2>/dev/null
  

• terminate_pidfiles "${pidfile}"
• result=$(cat "${outfile}")
• rm -f "${outfile}"
• if [[ "${result}" != TEST ]]; then

• return $KSFT_PASS
  

• fi
• return $KSFT_FAIL

+}

+test_diff_ns_local_vm_connect_to_local_host_fails() {

• local ns0="local0"
• local ns1="local1"
• local port=12345
• local pidfile
• local result
• local pid
• log_host "Launching socat in ns ${ns1}"
• outfile=$(mktemp)
• ip netns exec "${ns1}" socat VSOCK-LISTEN:"${port}" STDOUT &> "${outfile}" &
• pid=$!
• pidfile=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid)
• if ! vm_start "${VSOCK_CID}" "${ns0}" "${pidfile}"; then

• log_host "failed to start vm (cid=${cid}, ns=${ns0})"
  

• rm -f "${outfile}"
  

• return "${KSFT_FAIL}"
  

• fi
• vm_wait_for_ssh "${ns0}"
• vm_ssh "${ns0}" -- \

• bash -c "echo TEST | socat STDIN VSOCK-CONNECT:2:${port}" 2>&1 | log_guest
  

• terminate_pidfiles "${pidfile}"
• terminate_pids "${pid}"
• result=$(cat "${outfile}")
• rm -f "${outfile}"
• if [[ "${result}" != TEST ]]; then

• return "${KSFT_PASS}"
  

• fi
• return "${KSFT_FAIL}"

+}

+__test_loopback_two_netns() {

• local ns0=$1
• local ns1=$2
• local port=12345
• local result
• local pid
• modprobe vsock_loopback &> /dev/null || :
• log_host "Launching socat in ns ${ns1}"
• outfile=$(mktemp)
• ip netns exec "${ns1}" socat VSOCK-LISTEN:"${port}" STDOUT > "${outfile}" 2>/dev/null &
• pid=$!
• log_host "Launching socat in ns ${ns0}"
• echo TEST | ip netns exec "${ns0}" socat STDIN VSOCK-CONNECT:1:"${port}" 2>/dev/null
• terminate_pids "${pid}"
• result=$(cat "${outfile}")
• rm -f "${outfile}"
• if [[ "${result}" == TEST ]]; then

• return 0
  

• fi
• return 1

+}

+test_diff_ns_global_to_local_loopback_local_fails() {

• if ! __test_loopback_two_netns "global0" "local0"; then

• return "${KSFT_PASS}"
  

• fi
• return "${KSFT_FAIL}"

+}

+test_diff_ns_local_to_global_loopback_fails() {

• if ! __test_loopback_two_netns "local0" "global0"; then

• return "${KSFT_PASS}"
  

• fi
• return "${KSFT_FAIL}"

+}

+test_diff_ns_local_to_local_loopback_fails() {

• if ! __test_loopback_two_netns "local0" "local1"; then

• return "${KSFT_PASS}"
  

• fi
• return "${KSFT_FAIL}"

+}

+test_diff_ns_global_to_global_loopback_ok() {

• if __test_loopback_two_netns "global0" "global1"; then

• return "${KSFT_PASS}"
  

• fi
• return "${KSFT_FAIL}"

+}

+test_same_ns_local_loopback_ok() {

• if __test_loopback_two_netns "local0" "local0"; then

• return "${KSFT_PASS}"
  

• fi
• return "${KSFT_FAIL}"

+}

+test_same_ns_local_host_connect_to_local_vm_ok() {

• local ns="local0"
• local port=1234
• local pidfile
• local rc
• pidfile=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid)
• if ! vm_start "${VSOCK_CID}" "${ns}" "${pidfile}"; then

• return "${KSFT_FAIL}"
  

• fi
• vm_vsock_test "${ns}" "server" 2 "${TEST_GUEST_PORT}"
• host_vsock_test "${ns}" "client" "127.0.0.1" "${VSOCK_CID}" "${TEST_HOST_PORT}"
• rc=$?
• terminate_pidfiles "${pidfile}"
• if [[ $rc -ne 0 ]]; then

• return "${KSFT_FAIL}"
  

• fi
• return "${KSFT_PASS}"

+}

+test_same_ns_local_vm_connect_to_local_host_ok() {

• local ns="local0"
• local port=1234
• local pidfile
• local rc
• pidfile=$(mktemp /tmp/qemu_vsock_vmtest_XXXX.pid)
• if ! vm_start "${VSOCK_CID}" "${ns}" "${pidfile}"; then

• return "${KSFT_FAIL}"
  

• fi
• vm_vsock_test "${ns}" "server" 2 "${TEST_GUEST_PORT}"
• host_vsock_test "${ns}" "client" "127.0.0.1" "${VSOCK_CID}" "${TEST_HOST_PORT}"
• rc=$?
• terminate_pidfiles "${pidfile}"
• if [[ $rc -ne 0 ]]; then

• return "${KSFT_FAIL}"
  

• fi
• return "${KSFT_PASS}"

+}

+shared_vm_test() {

• local tname
• tname="${1}"
• for testname in "${USE_SHARED_VM[@]}"; do

• if [[ "${tname}" == "${testname}" ]]; then
  

• 	return 0
  

• fi
  

• done
• return 1

}

-run_test() {

+init_netns_test() {

• local tname
• tname="${1}"
• for testname in "${USE_INIT_NETNS[@]}"; do

• if [[ "${tname}" == "${testname}" ]]; then
  

• 	return 0
  

• fi
  

• done
• return 1

+}

+check_result() {

• local rc num
• rc=$1
• num=$(( cnt_total + 1 ))
• if [[ ${rc} -eq $KSFT_PASS ]]; then

• cnt_pass=$(( cnt_pass + 1 ))
  

• echo "ok ${num} ${arg}"
  

• elif [[ ${rc} -eq $KSFT_SKIP ]]; then

• cnt_skip=$(( cnt_skip + 1 ))
  

• echo "ok ${num} ${arg} # SKIP"
  

• elif [[ ${rc} -eq $KSFT_FAIL ]]; then

• cnt_fail=$(( cnt_fail + 1 ))
  

• echo "not ok ${num} ${arg} # exit=$rc"
  

• fi
• cnt_total=$(( cnt_total + 1 ))

+}

+run_shared_vm_tests() {

• local start_shared_vm pidfile local host_oops_cnt_before local host_warn_cnt_before local vm_oops_cnt_before

@@ -483,42 +1156,93 @@ run_test() { local name local rc

• host_oops_cnt_before=$(dmesg | grep -c -i 'Oops')
• host_warn_cnt_before=$(dmesg --level=warn | wc -l)
• vm_oops_cnt_before=$(vm_ssh -- dmesg | grep -c -i 'Oops')
• vm_warn_cnt_before=$(vm_ssh -- dmesg --level=warn | wc -l)

• start_shared_vm=0

• name=$(echo "${1}" | awk '{ print $1 }')
• eval test_"${name}"
• rc=$?

• for arg in "${ARGS[@]}"; do

• if shared_vm_test "${arg}"; then
  

• 	start_shared_vm=1
  

• 	break
  

• fi
  

• done

• host_oops_cnt_after=$(dmesg | grep -i 'Oops' | wc -l)
• if [[ ${host_oops_cnt_after} -gt ${host_oops_cnt_before} ]]; then

• echo "FAIL: kernel oops detected on host" | log_host "${name}"
  

• rc=$KSFT_FAIL
  

• pidfile=""
• if [[ "${start_shared_vm}" == 1 ]]; then

• pidfile=$(mktemp $PIDFILE_TEMPLATE)
  

• log_host "Booting up VM"
  

• vm_start "${VSOCK_CID}" "none" "${pidfile}"
  

• vm_wait_for_ssh "none"
  

• log_host "VM booted up"
  

  fi

• host_warn_cnt_after=$(dmesg --level=warn | wc -l)
• if [[ ${host_warn_cnt_after} -gt ${host_warn_cnt_before} ]]; then

• echo "FAIL: kernel warning detected on host" | log_host "${name}"
  

• rc=$KSFT_FAIL
  

• fi

• for arg in "${ARGS[@]}"; do

• if ! shared_vm_test "${arg}"; then
  

• 	continue
  

• fi
  
  

• vm_oops_cnt_after=$(vm_ssh -- dmesg | grep -i 'Oops' | wc -l)
• if [[ ${vm_oops_cnt_after} -gt ${vm_oops_cnt_before} ]]; then

• echo "FAIL: kernel oops detected on vm" | log_host "${name}"
  

• rc=$KSFT_FAIL
  

• fi

• host_oops_cnt_before=$(dmesg | grep -c -i 'Oops')
  

• host_warn_cnt_before=$(dmesg --level=warn | wc -l)
  

• vm_oops_cnt_before=$(vm_ssh none -- dmesg | grep -c -i 'Oops')
  

• vm_warn_cnt_before=$(vm_ssh none -- dmesg --level=warn | wc -l)
  

• name=$(echo "${arg}" | awk '{ print $1 }')
  

• log_host "Executing test_${name}"
  

• eval test_"${name}"
  

• rc=$?
  

• host_oops_cnt_after=$(dmesg | grep -i 'Oops' | wc -l)
  

• if [[ ${host_oops_cnt_after} -gt ${host_oops_cnt_before} ]]; then
  

• 	echo "FAIL: kernel oops detected on host" | log_host "${name}"
  

• 	rc=$KSFT_FAIL
  

• fi
  

• host_warn_cnt_after=$(dmesg --level=warn | wc -l)
  

• if [[ ${host_warn_cnt_after} -gt ${host_warn_cnt_before} ]]; then
  

• 	echo "FAIL: kernel warning detected on host" | log_host "${name}"
  

• 	rc=$KSFT_FAIL
  

• fi
  

• vm_oops_cnt_after=$(vm_ssh none -- dmesg | grep -i 'Oops' | wc -l)
  

• if [[ ${vm_oops_cnt_after} -gt ${vm_oops_cnt_before} ]]; then
  

• 	echo "FAIL: kernel oops detected on vm" | log_host "${name}"
  

• 	rc=$KSFT_FAIL
  

• fi
  

• vm_warn_cnt_after=$(vm_ssh none -- dmesg --level=warn | wc -l)
  

• if [[ ${vm_warn_cnt_after} -gt ${vm_warn_cnt_before} ]]; then
  

• 	echo "FAIL: kernel warning detected on vm" | log_host "${name}"
  

• 	rc=$KSFT_FAIL
  

• fi
  
  

• vm_warn_cnt_after=$(vm_ssh -- dmesg --level=warn | wc -l)
• if [[ ${vm_warn_cnt_after} -gt ${vm_warn_cnt_before} ]]; then

• echo "FAIL: kernel warning detected on vm" | log_host "${name}"
  

• rc=$KSFT_FAIL
  

• check_result "${rc}"
  

• done
• if [[ -n "${pidfile}" ]]; then

• log_host "VM terminate"
  

• terminate_pidfiles "${pidfile}"
  

  fi

+}

+run_isolated_vm_tests() {

• for arg in "${ARGS[@]}"; do

• if shared_vm_test "${arg}"; then
  

• 	continue
  

• fi
  
  

• return "${rc}"

• add_namespaces
  

• if init_netns_test "${arg}"; then
  

• 	init_namespaces
  

• fi
  

• name=$(echo "${arg}" | awk '{ print $1 }')
  

• log_host "Executing test_${name}"
  

• eval test_"${name}"
  

• check_result $?
  

• del_namespaces
  

• done

}

+BUILD=0 QEMU="qemu-system-$(uname -m)"

while getopts :hvsq:b o @@ -543,34 +1267,13 @@ fi check_args "${ARGS[@]}" check_deps check_vng +check_socat handle_build

echo "1..${#ARGS[@]}"

-log_host "Booting up VM" -vm_start -vm_wait_for_ssh -log_host "VM booted up"

-cnt_pass=0 -cnt_fail=0 -cnt_skip=0 -cnt_total=0 -for arg in "${ARGS[@]}"; do

• run_test "${arg}"
• rc=$?
• if [[ ${rc} -eq $KSFT_PASS ]]; then

• cnt_pass=$(( cnt_pass + 1 ))
  

• echo "ok ${cnt_total} ${arg}"
  

• elif [[ ${rc} -eq $KSFT_SKIP ]]; then

• cnt_skip=$(( cnt_skip + 1 ))
  

• echo "ok ${cnt_total} ${arg} # SKIP"
  

• elif [[ ${rc} -eq $KSFT_FAIL ]]; then

• cnt_fail=$(( cnt_fail + 1 ))
  

• echo "not ok ${cnt_total} ${arg} # exit=$rc"
  

• fi
• cnt_total=$(( cnt_total + 1 ))

-done +run_shared_vm_tests +run_isolated_vm_tests

echo "SUMMARY: PASS=${cnt_pass} SKIP=${cnt_skip} FAIL=${cnt_fail}" echo "Log: ${LOG}"

-- 2.47.3