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Tue, 11 Nov 2025 22:55:43 -0800 (PST) From: Bobby Eshleman Date: Tue, 11 Nov 2025 22:54:52 -0800 Subject: [PATCH net-next v9 10/14] selftests/vsock: prepare vm management helpers for namespaces Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251111-vsock-vmtest-v9-10-852787a37bed@meta.com> References: <20251111-vsock-vmtest-v9-0-852787a37bed@meta.com> In-Reply-To: <20251111-vsock-vmtest-v9-0-852787a37bed@meta.com> To: Stefano Garzarella , Shuah Khan , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Stefan Hajnoczi , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Bryan Tan , Vishnu Dasa , Broadcom internal kernel review list , Bobby Eshleman Cc: virtualization@lists.linux.dev, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-hyperv@vger.kernel.org, Sargun Dhillon , berrange@redhat.com, Bobby Eshleman X-Mailer: b4 0.14.3 From: Bobby Eshleman Add namespace support to vm management, ssh helpers, and vsock_test wrapper functions. This enables running VMs and test helpers in specific namespaces, which is required for upcoming namespace isolation tests. The functions still work correctly within the init ns, though the caller must now pass "init_ns" explicitly. No functional changes for existing tests. All have been updated to pass "init_ns" explicitly. Affected functions (such as vm_start() and vm_ssh()) now wrap their commands with 'ip netns exec' when executing commands in non-init namespaces. Signed-off-by: Bobby Eshleman Reviewed-by: Stefano Garzarella --- tools/testing/selftests/vsock/vmtest.sh | 100 ++++++++++++++++++++++------= ---- 1 file changed, 68 insertions(+), 32 deletions(-) diff --git a/tools/testing/selftests/vsock/vmtest.sh b/tools/testing/selfte= sts/vsock/vmtest.sh index f78cc574c274..663be2da4e22 100755 --- a/tools/testing/selftests/vsock/vmtest.sh +++ b/tools/testing/selftests/vsock/vmtest.sh @@ -144,7 +144,18 @@ ns_set_mode() { } =20 vm_ssh() { - ssh -q -o UserKnownHostsFile=3D/dev/null -p ${SSH_HOST_PORT} localhost "$= @" + local ns_exec + + if [[ "${1}" =3D=3D init_ns ]]; then + ns_exec=3D"" + else + ns_exec=3D"ip netns exec ${1}" + fi + + shift + + ${ns_exec} ssh -q -o UserKnownHostsFile=3D/dev/null -p "${SSH_HOST_PORT}"= localhost "$@" + return $? } =20 @@ -267,10 +278,12 @@ terminate_pidfiles() { =20 vm_start() { local pidfile=3D$1 + local ns=3D$2 local logfile=3D/dev/null local verbose_opt=3D"" local kernel_opt=3D"" local qemu_opts=3D"" + local ns_exec=3D"" local qemu =20 qemu=3D$(command -v "${QEMU}") @@ -291,7 +304,11 @@ vm_start() { kernel_opt=3D"${KERNEL_CHECKOUT}" fi =20 - vng \ + if [[ "${ns}" !=3D "init_ns" ]]; then + ns_exec=3D"ip netns exec ${ns}" + fi + + ${ns_exec} vng \ --run \ ${kernel_opt} \ ${verbose_opt} \ @@ -306,6 +323,7 @@ vm_start() { } =20 vm_wait_for_ssh() { + local ns=3D$1 local i =20 i=3D0 @@ -313,7 +331,8 @@ 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=3D$(( i + 1 )) @@ -347,30 +366,40 @@ wait_for_listener() } =20 vm_wait_for_listener() { - local port=3D$1 + local ns=3D$1 + local port=3D$2 =20 - vm_ssh <&1 | log_guest rc=3D$? else - vm_ssh -- "${VSOCK_TEST}" \ + vm_ssh "${ns}" -- "${VSOCK_TEST}" \ --mode=3Dserver \ --peer-cid=3D"${cid}" \ --control-port=3D"${port}" \ @@ -390,7 +419,7 @@ vm_vsock_test() { return $rc fi =20 - vm_wait_for_listener "${port}" + vm_wait_for_listener "${ns}" "${port}" rc=3D$? fi set +o pipefail @@ -399,22 +428,28 @@ vm_vsock_test() { } =20 host_vsock_test() { - local host=3D$1 - local cid=3D$2 - local port=3D$3 + local ns=3D$1 + local host=3D$2 + local cid=3D$3 + local port=3D$4 local rc =20 + local cmd=3D"${VSOCK_TEST}" + if [[ "${ns}" !=3D "init_ns" ]]; then + cmd=3D"ip netns exec ${ns} ${cmd}" + fi + # log output and use pipefail to respect vsock_test errors set -o pipefail if [[ "${host}" !=3D server ]]; then - ${VSOCK_TEST} \ + ${cmd} \ --mode=3Dclient \ --peer-cid=3D"${cid}" \ --control-host=3D"${host}" \ --control-port=3D"${port}" 2>&1 | log_host rc=3D$? else - ${VSOCK_TEST} \ + ${cmd} \ --mode=3Dserver \ --peer-cid=3D"${cid}" \ --control-port=3D"${port}" 2>&1 | log_host & @@ -425,7 +460,7 @@ host_vsock_test() { return $rc fi =20 - host_wait_for_listener "${port}" + host_wait_for_listener "${ns}" "${port}" rc=3D$? fi set +o pipefail @@ -469,11 +504,11 @@ log_guest() { } =20 test_vm_server_host_client() { - if ! vm_vsock_test "server" 2 "${TEST_GUEST_PORT}"; then + if ! vm_vsock_test "init_ns" "server" 2 "${TEST_GUEST_PORT}"; then return "${KSFT_FAIL}" fi =20 - if ! host_vsock_test "127.0.0.1" "${VSOCK_CID}" "${TEST_HOST_PORT}"; then + if ! host_vsock_test "init_ns" "127.0.0.1" "${VSOCK_CID}" "${TEST_HOST_PO= RT}"; then return "${KSFT_FAIL}" fi =20 @@ -481,11 +516,11 @@ test_vm_server_host_client() { } =20 test_vm_client_host_server() { - if ! host_vsock_test "server" "${VSOCK_CID}" "${TEST_HOST_PORT_LISTENER}"= ; then + if ! host_vsock_test "init_ns" "server" "${VSOCK_CID}" "${TEST_HOST_PORT_= LISTENER}"; then return "${KSFT_FAIL}" fi =20 - if ! vm_vsock_test "10.0.2.2" 2 "${TEST_HOST_PORT_LISTENER}"; then + if ! vm_vsock_test "init_ns" "10.0.2.2" 2 "${TEST_HOST_PORT_LISTENER}"; t= hen return "${KSFT_FAIL}" fi =20 @@ -495,13 +530,14 @@ test_vm_client_host_server() { test_vm_loopback() { local port=3D60000 # non-forwarded local port =20 - vm_ssh -- modprobe vsock_loopback &> /dev/null || : + vm_ssh "init_ns" -- modprobe vsock_loopback &> /dev/null || : =20 - if ! vm_vsock_test "server" 1 "${port}"; then + if ! vm_vsock_test "init_ns" "server" 1 "${port}"; then return "${KSFT_FAIL}" fi =20 - if ! vm_vsock_test "127.0.0.1" 1 "${port}"; then + + if ! vm_vsock_test "init_ns" "127.0.0.1" 1 "${port}"; then return "${KSFT_FAIL}" fi =20 @@ -559,8 +595,8 @@ run_shared_vm_test() { =20 host_oops_cnt_before=3D$(dmesg | grep -c -i 'Oops') host_warn_cnt_before=3D$(dmesg --level=3Dwarn | grep -c -i 'vsock') - vm_oops_cnt_before=3D$(vm_ssh -- dmesg | grep -c -i 'Oops') - vm_warn_cnt_before=3D$(vm_ssh -- dmesg --level=3Dwarn | grep -c -i 'vsock= ') + vm_oops_cnt_before=3D$(vm_ssh "init_ns" -- dmesg | grep -c -i 'Oops') + vm_warn_cnt_before=3D$(vm_ssh "init_ns" -- dmesg --level=3Dwarn | grep -c= -i 'vsock') =20 name=3D$(echo "${1}" | awk '{ print $1 }') eval test_"${name}" @@ -578,13 +614,13 @@ run_shared_vm_test() { rc=3D$KSFT_FAIL fi =20 - vm_oops_cnt_after=3D$(vm_ssh -- dmesg | grep -i 'Oops' | wc -l) + vm_oops_cnt_after=3D$(vm_ssh "init_ns" -- dmesg | grep -i 'Oops' | wc -l) if [[ ${vm_oops_cnt_after} -gt ${vm_oops_cnt_before} ]]; then echo "FAIL: kernel oops detected on vm" | log_host rc=3D$KSFT_FAIL fi =20 - vm_warn_cnt_after=3D$(vm_ssh -- dmesg --level=3Dwarn | grep -c -i 'vsock') + vm_warn_cnt_after=3D$(vm_ssh "init_ns" -- dmesg --level=3Dwarn | grep -c = -i 'vsock') if [[ ${vm_warn_cnt_after} -gt ${vm_warn_cnt_before} ]]; then echo "FAIL: kernel warning detected on vm" | log_host rc=3D$KSFT_FAIL @@ -630,8 +666,8 @@ cnt_total=3D0 if shared_vm_tests_requested "${ARGS[@]}"; then log_host "Booting up VM" pidfile=3D"$(create_pidfile)" - vm_start "${pidfile}" - vm_wait_for_ssh + vm_start "${pidfile}" "init_ns" + vm_wait_for_ssh "init_ns" log_host "VM booted up" =20 run_shared_vm_tests "${ARGS[@]}" --=20 2.47.3