From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f174.google.com (mail-pl1-f174.google.com [209.85.214.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 117383002A3 for ; Fri, 21 Nov 2025 05:45:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.174 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763703911; cv=none; b=XmRGRcRJpZm93vw4LZgO4r6+edI3LkfGnPM9x/8uOzGM2WsWS4n4qXtyp+Ts/c1Hsf8N9Gihs4yCtSKGZiALNL77jxclRyPKuy089IFDSE5lITaFXanrMdwazvrNaS9tJKHJEUJbr5peJZ79eutQPLcnRhvO7ZI3IBAM8MXOqYo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763703911; c=relaxed/simple; bh=HcFpLUc+G6pQCjiDu3dqqPPKH+0uQ8yqBNmFiEzDG9E=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=sp4ypt6rpofLetoHQvoYLJAvat2++3SuwaCAqY7KulqINbXw7vj4cHHcDB5sqiV5CWMzdVRQgR211G/LwLhAWLT4GPeu18XECOqx3zT5Yh86Dm90xadK3uJh0QtRg7gABxYfqMpkC4r8itRXM5kEWWcS4wG3XkJQYPj3mIscyaY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Klkn0m20; arc=none smtp.client-ip=209.85.214.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Klkn0m20" Received: by mail-pl1-f174.google.com with SMTP id d9443c01a7336-2956d816c10so19575615ad.1 for ; Thu, 20 Nov 2025 21:45:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1763703903; x=1764308703; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=V9sFl9qbvPwYtRInTuWVbglrBqV89lDCjlyhP3JynaY=; b=Klkn0m20fjLI6Vui0GWilQsRMEvbJFjTwZ9HtpseO8a271FSF86tEMIr9jBqtMe+NY TJYA97A1ZEWs0grA8NlWhm1EWLGRAruXtl8iIs8ASFE5QV4fKbklmTqKhlIZVPRLYfzE MU1JPTMrAYKAHrcT8hFsT+9geha38Rfd1/hvxu1enXwRRIdYWESM/fMhRRZFHgdeWVFz hbhEpJUIpYlIwCw5FHijmibnG6FU22ANSd3szZWWFTHlwUE3yPJhbSoOTMz8n0Ldj6+F MlW65xr+pYraqUw390l+Pb2JRj6s8bOgEd8Pvn6HcDp9Lb/NNMo0x10wjbTJ2N1GVqNb iMMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763703903; x=1764308703; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=V9sFl9qbvPwYtRInTuWVbglrBqV89lDCjlyhP3JynaY=; b=goMUtTW2sPopux5GPDeP6lbUwFtWKlR5bzzIob1wMPTga1MjFOHMVSB2vvKXZHT8JH uWoT4KPvONfn1AfiS6nGUHJi+F7ll6RD6TXr6jqPX4ylLwaZYAhe19zgz+1q55NWdizS BgkA3rxty/WbO4wrTAo4vUKQ3T2QEBDZ40aYWFWJMBymBEUUwjXdW7//iXVasAXJd5sT Y1qSiJlpdJa2W7wXTzh/vGa6zCR4qrNNRe3F5wd6eeoQ5SSI3yo3JGx7K8e5SJChBbT/ hPBbnEnuzz/WMsVprjS+C48phoKcb9rj/N4cazct+63/APCO3/itBleD1dlh27ZcK29a 7tbQ== X-Forwarded-Encrypted: i=1; AJvYcCV7sDfKMAd7Im5wW7N1l8cl8u4eyNxByHDaKoyOgh3rtTOBhOVKT3fik+wd3XZBQOJFaCuSzuHc/RfszJWKeC8=@vger.kernel.org X-Gm-Message-State: AOJu0YxY7U4XDTQn01INRVCiMfjx71KLGbPvd2yOqAAP10C43aZ3Uz3l EfOXIUbWTvNTZvLkVfNU0aXrVStL39ibd4SfCQahM1elkJHSuubncM7X X-Gm-Gg: ASbGncuS4vCnuRRV4aWaR596Ra4mTztoGgjDxATDhQdvioC3FBjJOHbr4Rn5GRtrWBr pF/wE1YGe5EOTBRm/Sx2cXV4ZhClsRCbrOERD+ScaGIkuhoE94F0c/I8nfaJb6akG9UrWsu6VOj ZBpxzrb3pnNxrQyzc7ly6LeZj4bQagEd5Sy+YOt07MdQs1jGodNKmpo3lDfC25eYzlsmX8bitG+ nygzvKjHXuvumuhSCHD+YSSEw1iqTeAr9F2mBSZ92s12qGzhHLkOZUydz1G1/xEc2bk6143NzO2 +4bDW3tBPTOk+BDQ2xKyZY+vRQsNGJalULkEsYOdBqCI5Fh82Ox69muY8NZ8TQ8GYAXDnxBPxxn /JF3sAPtVZzgGlR6HwIc/pBBDhQRFIwEllFpnIu+NoidapIFGunptdi+hAwAHvqSe262NZSsjKH 9S8ULpkLkooj5Cd8uuHZE= X-Google-Smtp-Source: AGHT+IGNogkw6+aYEKeY1jIA1/MWu6kqW3NQeqBIULV4beIyW6SfaQAClzFvrrHi8XqojUq6urD3Lg== X-Received: by 2002:a17:903:19ec:b0:297:f8dd:4d8e with SMTP id d9443c01a7336-29b6bf37d9dmr17593035ad.30.1763703903500; Thu, 20 Nov 2025 21:45:03 -0800 (PST) Received: from localhost ([2a03:2880:2ff:6::]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-29b5b25e0f0sm42902025ad.46.2025.11.20.21.45.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Nov 2025 21:45:03 -0800 (PST) From: Bobby Eshleman Date: Thu, 20 Nov 2025 21:44:45 -0800 Subject: [PATCH net-next v11 13/13] selftests/vsock: add tests for namespace deletion and mode changes Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251120-vsock-vmtest-v11-13-55cbc80249a7@meta.com> References: <20251120-vsock-vmtest-v11-0-55cbc80249a7@meta.com> In-Reply-To: <20251120-vsock-vmtest-v11-0-55cbc80249a7@meta.com> To: Stefano Garzarella , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Stefan Hajnoczi , "Michael S. Tsirkin" , Jason Wang , =?utf-8?q?Eugenio_P=C3=A9rez?= , Xuan Zhuo , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Bryan Tan , Vishnu Dasa , Broadcom internal kernel review list , Shuah Khan Cc: linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, netdev@vger.kernel.org, kvm@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kselftest@vger.kernel.org, berrange@redhat.com, Sargun Dhillon , Bobby Eshleman , Bobby Eshleman X-Mailer: b4 0.14.3 From: Bobby Eshleman Add tests that validate vsock sockets are resilient to deleting namespaces or changing namespace modes from global to local. The vsock sockets should still function normally. The function check_ns_changes_dont_break_connection() is added to re-use the step-by-step logic of 1) setup connections, 2) do something that would maybe break the connections, 3) check that the connections are still ok. Signed-off-by: Bobby Eshleman --- Changes in v11: - remove pipefile (Stefano) Changes in v9: - more consistent shell style - clarify -u usage comment for pipefile --- tools/testing/selftests/vsock/vmtest.sh | 119 ++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) diff --git a/tools/testing/selftests/vsock/vmtest.sh b/tools/testing/selftests/vsock/vmtest.sh index dfa895abfc7f..5f0b24845fad 100755 --- a/tools/testing/selftests/vsock/vmtest.sh +++ b/tools/testing/selftests/vsock/vmtest.sh @@ -69,6 +69,12 @@ readonly TEST_NAMES=( ns_same_local_loopback_ok ns_same_local_host_connect_to_local_vm_ok ns_same_local_vm_connect_to_local_host_ok + ns_mode_change_connection_continue_vm_ok + ns_mode_change_connection_continue_host_ok + ns_mode_change_connection_continue_both_ok + ns_delete_vm_ok + ns_delete_host_ok + ns_delete_both_ok ) readonly TEST_DESCS=( # vm_server_host_client @@ -139,6 +145,24 @@ readonly TEST_DESCS=( # ns_same_local_vm_connect_to_local_host_ok "Run vsock_test client in VM in a local ns with server in same ns." + + # ns_mode_change_connection_continue_vm_ok + "Check that changing NS mode of VM namespace from global to local after a connection is established doesn't break the connection" + + # ns_mode_change_connection_continue_host_ok + "Check that changing NS mode of host namespace from global to local after a connection is established doesn't break the connection" + + # ns_mode_change_connection_continue_both_ok + "Check that changing NS mode of host and VM namespaces from global to local after a connection is established doesn't break the connection" + + # ns_delete_vm_ok + "Check that deleting the VM's namespace does not break the socket connection" + + # ns_delete_host_ok + "Check that deleting the host's namespace does not break the socket connection" + + # ns_delete_both_ok + "Check that deleting the VM and host's namespaces does not break the socket connection" ) readonly USE_SHARED_VM=( @@ -1288,6 +1312,101 @@ test_ns_vm_local_mode_rejected() { return "${KSFT_PASS}" } +check_ns_changes_dont_break_connection() { + local pipefile pidfile outfile + local ns0="global0" + local ns1="global1" + local port=12345 + local pids=() + local rc=0 + + init_namespaces + + pidfile="$(create_pidfile)" + if ! vm_start "${pidfile}" "${ns0}"; then + return "${KSFT_FAIL}" + fi + vm_wait_for_ssh "${ns0}" + + outfile=$(mktemp) + vm_ssh "${ns0}" -- \ + socat VSOCK-LISTEN:"${port}",fork STDOUT > "${outfile}" 2>/dev/null & + pids+=($!) + vm_wait_for_listener "${ns0}" "${port}" "vsock" + + # We use a pipe here so that we can echo into the pipe instead of using + # socat and a unix socket file. We just need a name for the pipe (not a + # regular file) so use -u. + pipefile=$(mktemp -u /tmp/vmtest_pipe_XXXX) + ip netns exec "${ns1}" \ + socat PIPE:"${pipefile}" VSOCK-CONNECT:"${VSOCK_CID}":"${port}" & + pids+=($!) + + timeout "${WAIT_PERIOD}" \ + bash -c 'while [[ ! -e '"${pipefile}"' ]]; do sleep 1; done; exit 0' + + if [[ $2 == "delete" ]]; then + if [[ "$1" == "vm" ]]; then + ip netns del "${ns0}" + elif [[ "$1" == "host" ]]; then + ip netns del "${ns1}" + elif [[ "$1" == "both" ]]; then + ip netns del "${ns0}" + ip netns del "${ns1}" + fi + elif [[ $2 == "change_mode" ]]; then + if [[ "$1" == "vm" ]]; then + ns_set_mode "${ns0}" "local" + elif [[ "$1" == "host" ]]; then + ns_set_mode "${ns1}" "local" + elif [[ "$1" == "both" ]]; then + ns_set_mode "${ns0}" "local" + ns_set_mode "${ns1}" "local" + fi + fi + + echo "TEST" > "${pipefile}" + + timeout "${WAIT_PERIOD}" \ + bash -c 'while [[ ! -s '"${outfile}"' ]]; do sleep 1; done; exit 0' + + if grep -q "TEST" "${outfile}"; then + rc="${KSFT_PASS}" + else + rc="${KSFT_FAIL}" + fi + + terminate_pidfiles "${pidfile}" + terminate_pids "${pids[@]}" + rm -f "${outfile}" "${pipefile}" + + return "${rc}" +} + +test_ns_mode_change_connection_continue_vm_ok() { + check_ns_changes_dont_break_connection "vm" "change_mode" +} + +test_ns_mode_change_connection_continue_host_ok() { + check_ns_changes_dont_break_connection "host" "change_mode" +} + +test_ns_mode_change_connection_continue_both_ok() { + check_ns_changes_dont_break_connection "both" "change_mode" +} + +test_ns_delete_vm_ok() { + check_ns_changes_dont_break_connection "vm" "delete" +} + +test_ns_delete_host_ok() { + check_ns_changes_dont_break_connection "host" "delete" +} + +test_ns_delete_both_ok() { + check_ns_changes_dont_break_connection "both" "delete" +} + shared_vm_test() { local tname -- 2.47.3