From patchwork Wed Feb 19 12:50:39 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Liang X-Patchwork-Id: 13982162 Received: from mail-pl1-f182.google.com (mail-pl1-f182.google.com [209.85.214.182]) (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 094891EDA1A; Wed, 19 Feb 2025 12:52:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739969573; cv=none; b=YHyqw72w0KYiMqtLgsyQTF/pGimH+gRIDU9G2bLkHKSyaH+87z8A4ak6/l1q3OoxR2PXY4Era4JpT9SMxuKQl7r8oJZgSYqrgFq4ohkAjWPEgVrd+76Vjw9OoZURiGl3+HBMnaxkBHzwkgIUD4x5rJECs9SC+Q3DErTqrRF9XJE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739969573; c=relaxed/simple; bh=jqz5blGUX5UncrsSac4ngco/AKqB1xIOiCjAuaEMTY0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IC9p6rrHOZP6U5EEm4Fdyom3DVFOBn3JndV+xApaj6ET9nH5ZLd6cvJkeFpsVMd08Ml0Ow9bATiDjL9pyr7U9rdRmvAAiw/UlS7XvGFF/knv+fWRJ0MENgSnOoBi/mmCJ+wOSC75WlDqigGwOdLHj3AxA6KrmyvOUOKi0UhZ7Zk= 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=U4Zhxt4w; arc=none smtp.client-ip=209.85.214.182 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="U4Zhxt4w" Received: by mail-pl1-f182.google.com with SMTP id d9443c01a7336-220c8cf98bbso135197225ad.1; Wed, 19 Feb 2025 04:52:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1739969571; x=1740574371; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Qx8bg1rA+gp6wNTCNpkIOzYNrMU90JwyPLUIFRVvz8E=; b=U4Zhxt4wkWLZNEUdriEmY4nt1U6QODPGEGdOWFd9SYyAS/nxTfidywYkZ6ubu3DG4+ fxsNNL7dD2aK0EjlUsX6L/LFXNxuKAyahEASlZEzbscVVUnGXU97Q9nx7SM1CKXVxNuh qp0NFRZkXNgB9eNYubxXcpSK2IDla9H/bho2M81Dt7r5QM4IQ16sAf6HirYG5hFzQUxg 3XgiCArjTeOFhXS1Kr0mgA6tmHGEt1t5GxQZxs4UN4sgHSfdUupBMD5X0n38rrds/TBy TVgXloxArrLyXw85Xlwqe8nEIPrwYnNAUmLKQ/0lg6wYNwMYwsUpzGYqmQLaLRbkhKP5 xjjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1739969571; x=1740574371; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Qx8bg1rA+gp6wNTCNpkIOzYNrMU90JwyPLUIFRVvz8E=; b=do/S6iYXwKn/lAiCEW9jhLeSnJ41LGKqFLz3uhNfP5h+lMx/lwJfhGrzWXzIo3Bgf+ 3Sc1o+r5vCAaXuAR8HDSFjuGhhk7Uwtk5t1dnyBCxBmQ9T3SjL/4aPjX8Y1pit2xpPpZ bZtJVpAcoyw0PCcU68AD4CFzku5gIOK43upSsMUElNv40SDl1LetcvtE35J24w6aJHOp uYsDl2tg3njcVZHHzBokMOT4l3CocGIwSUA4OY2hp43WlwD749NqMk8htsubbT9WuUqW A7xiRJdZx/Ks+wPkBUcG0pgxgKHCSoes9PjOWnaRtwUmqLV7HDdBVnrBQKaTkg1rYaO6 Emqg== X-Forwarded-Encrypted: i=1; AJvYcCUl4CSDdABPIYAP/mZBXAIZ9S+Ne6VZ7cwEuTJ7Xoc4Vj3WE0XRfCn7kbcdCOiFCGZLYJBjxSdCxBRv@vger.kernel.org, AJvYcCVg5ssw7cA5Y4/fYPCcT8jMvfAFCF+ne7zoeGrfjVj3Cc0oK9Zp9lks2k/0ErnL1trt3Puo/YkTROQFithgHExD@vger.kernel.org, AJvYcCVmCJ+TJCazkHIR1TNMvpRAPpkrTa1vcDeQ9PAiylf7sjLpt3POkfiCQie6XyaXo3D69oP6YhUSE4QSfA==@vger.kernel.org, AJvYcCVtaMhJlRGuZe1nY3lj3zQkxKBJq8sUfYnW1X64jFCSOeA+r3rf+7zWm5iop/ApBVZChPB4c/uV6bOmqw==@vger.kernel.org, AJvYcCWMQwUAelExnT2fjXH8vas4yuuZNjqqOfDMpZkWyXWoaJ3OOPsEHPeyuUGeORbMQCcqNXU=@vger.kernel.org, AJvYcCWYEuWdKNnLEq2CBvXkykJNu/TV48GCIjJpOM6gXPEFN6UDbCZfeiwLIz+xlbElz/YJWpX4CYHPZei3@vger.kernel.org, AJvYcCX9j6ndoyepFmcT2VLbLz5XlyXvLr5M493MNsT2Izm/1vZk27b1uwQXLiMiOFgWBSfKUHnWM1xAnvZxtC7T6W8=@vger.kernel.org, AJvYcCXQiX6EVq0pYLKEuooztkPIWwMinVspuRBY+VPA+ZCDUxP6ACMbmWuHK8X/XKGYqaKzxUEOTMolfV+4ZJId@vger.kernel.org X-Gm-Message-State: AOJu0Yx5R2C2JSYpTGvH3Oul56YBFuDCxBOHR5UpEqp5w1qZFUf30C7y Vwn26gm1J73ltiWcIAdr01qIqxsnku/+p5onmTUjJ7UM8xj2EsF8alW6YioT X-Gm-Gg: ASbGnctoOTWBVPFFZYGKrvxQiBahIVCfLhX9XTZrpTR0l7CTKJPbHaeBhjRSBMGoZEt 3cr0GvLuaWxYIXDGjF+fZbig9jG7/ewCUPc2XAfv0BeYkDFhW4khmnCWrWGR6l/IaVysUzrx0wm A74UWwrkicZkVCgxwmRck6MSsy/wLHAydNncAvyJe0VXvi6cyoXH8UKKF/kHWQygkklemlSNH2u hqb0NZ89HHFKKY3dtwUgx/l3o7g767tjmoEHtSvpNR6Cjub1JYJ79kptNT4Q9yzmw+T0PNbhwIU Yejx4g== X-Google-Smtp-Source: AGHT+IFzy5Z/oqAXsIcnrbdGOPINebfA49h4xYVAFBGwVs0inyqERb0A/6qA2oCD1QD2DsUmBu7oEA== X-Received: by 2002:a17:902:f706:b0:21f:35fd:1b57 with SMTP id d9443c01a7336-221040be680mr277312185ad.43.1739969570774; Wed, 19 Feb 2025 04:52:50 -0800 (PST) Received: from ws.. ([103.167.140.11]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-220d536436fsm103427175ad.64.2025.02.19.04.52.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Feb 2025 04:52:50 -0800 (PST) From: Xiao Liang To: netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, Kuniyuki Iwashima , Jakub Kicinski Cc: "David S. Miller" , David Ahern , Eric Dumazet , Paolo Abeni , Andrew Lunn , Simon Horman , Shuah Khan , Donald Hunter , Alexander Aring , Stefan Schmidt , Miquel Raynal , Steffen Klassert , Herbert Xu , linux-rdma@vger.kernel.org, linux-can@vger.kernel.org, osmocom-net-gprs@lists.osmocom.org, bpf@vger.kernel.org, linux-ppp@vger.kernel.org, wireguard@lists.zx2c4.com, linux-wireless@vger.kernel.org, b.a.t.m.a.n@lists.open-mesh.org, bridge@lists.linux.dev, linux-wpan@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v10 13/13] selftests: net: Add test cases for link and peer netns Date: Wed, 19 Feb 2025 20:50:39 +0800 Message-ID: <20250219125039.18024-14-shaw.leon@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250219125039.18024-1-shaw.leon@gmail.com> References: <20250219125039.18024-1-shaw.leon@gmail.com> Precedence: bulk X-Mailing-List: linux-wpan@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 - Add test for creating link in another netns when a link of the same name and ifindex exists in current netns. - Add test to verify that link is created in target netns directly - no link new/del events should be generated in link netns or current netns. - Add test cases to verify that link-netns is set as expected for various drivers and combination of namespace-related parameters. Signed-off-by: Xiao Liang --- tools/testing/selftests/net/Makefile | 1 + tools/testing/selftests/net/config | 5 + tools/testing/selftests/net/link_netns.py | 141 ++++++++++++++++++++++ tools/testing/selftests/net/netns-name.sh | 10 ++ 4 files changed, 157 insertions(+) create mode 100755 tools/testing/selftests/net/link_netns.py diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index 8d6116b80cf1..aeb96c085614 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -36,6 +36,7 @@ TEST_PROGS += cmsg_so_priority.sh TEST_PROGS += test_so_rcv.sh TEST_PROGS += cmsg_time.sh cmsg_ipv6.sh TEST_PROGS += netns-name.sh +TEST_PROGS += link_netns.py TEST_PROGS += nl_netdev.py TEST_PROGS += rtnetlink.py TEST_PROGS += srv6_end_dt46_l3vpn_test.sh diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config index 5b9baf708950..ab55270669ec 100644 --- a/tools/testing/selftests/net/config +++ b/tools/testing/selftests/net/config @@ -107,3 +107,8 @@ CONFIG_XFRM_INTERFACE=m CONFIG_XFRM_USER=m CONFIG_IP_NF_MATCH_RPFILTER=m CONFIG_IP6_NF_MATCH_RPFILTER=m +CONFIG_IPVLAN=m +CONFIG_CAN=m +CONFIG_CAN_DEV=m +CONFIG_CAN_VXCAN=m +CONFIG_NETKIT=y diff --git a/tools/testing/selftests/net/link_netns.py b/tools/testing/selftests/net/link_netns.py new file mode 100755 index 000000000000..aab043c59d69 --- /dev/null +++ b/tools/testing/selftests/net/link_netns.py @@ -0,0 +1,141 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +import time + +from lib.py import ksft_run, ksft_exit, ksft_true +from lib.py import ip +from lib.py import NetNS, NetNSEnter +from lib.py import RtnlFamily + + +LINK_NETNSID = 100 + + +def test_event() -> None: + with NetNS() as ns1, NetNS() as ns2: + with NetNSEnter(str(ns2)): + rtnl = RtnlFamily() + + rtnl.ntf_subscribe("rtnlgrp-link") + + ip(f"netns set {ns2} {LINK_NETNSID}", ns=str(ns1)) + ip(f"link add netns {ns1} link-netnsid {LINK_NETNSID} dummy1 type dummy") + ip(f"link add netns {ns1} dummy2 type dummy", ns=str(ns2)) + + ip("link del dummy1", ns=str(ns1)) + ip("link del dummy2", ns=str(ns1)) + + time.sleep(1) + rtnl.check_ntf() + ksft_true(rtnl.async_msg_queue.empty(), + "Received unexpected link notification") + + +def validate_link_netns(netns, ifname, link_netnsid) -> bool: + link_info = ip(f"-d link show dev {ifname}", ns=netns, json=True) + if not link_info: + return False + return link_info[0].get("link_netnsid") == link_netnsid + + +def test_link_net() -> None: + configs = [ + # type, common args, type args, fallback to dev_net + ("ipvlan", "link dummy1", "", False), + ("macsec", "link dummy1", "", False), + ("macvlan", "link dummy1", "", False), + ("macvtap", "link dummy1", "", False), + ("vlan", "link dummy1", "id 100", False), + ("gre", "", "local 192.0.2.1", True), + ("vti", "", "local 192.0.2.1", True), + ("ipip", "", "local 192.0.2.1", True), + ("ip6gre", "", "local 2001:db8::1", True), + ("ip6tnl", "", "local 2001:db8::1", True), + ("vti6", "", "local 2001:db8::1", True), + ("sit", "", "local 192.0.2.1", True), + ("xfrm", "", "if_id 1", True), + ] + + with NetNS() as ns1, NetNS() as ns2, NetNS() as ns3: + net1, net2, net3 = str(ns1), str(ns2), str(ns3) + + # prepare link netnsid and a dummy link needed by certain drivers + ip(f"netns set {net3} {LINK_NETNSID}", ns=str(net2)) + ip("link add dummy1 type dummy", ns=net3) + + cases = [ + # source, "netns", "link-netns", expected link-netns + (net3, None, None, None, None), + (net3, net2, None, None, LINK_NETNSID), + (net2, None, net3, LINK_NETNSID, LINK_NETNSID), + (net1, net2, net3, LINK_NETNSID, LINK_NETNSID), + ] + + for src_net, netns, link_netns, exp1, exp2 in cases: + tgt_net = netns or src_net + for typ, cargs, targs, fb_dev_net in configs: + cmd = "link add" + if netns: + cmd += f" netns {netns}" + if link_netns: + cmd += f" link-netns {link_netns}" + cmd += f" {cargs} foo type {typ} {targs}" + ip(cmd, ns=src_net) + if fb_dev_net: + ksft_true(validate_link_netns(tgt_net, "foo", exp1), + f"{typ} link_netns validation failed") + else: + ksft_true(validate_link_netns(tgt_net, "foo", exp2), + f"{typ} link_netns validation failed") + ip(f"link del foo", ns=tgt_net) + + +def test_peer_net() -> None: + types = [ + "vxcan", + "netkit", + "veth", + ] + + with NetNS() as ns1, NetNS() as ns2, NetNS() as ns3, NetNS() as ns4: + net1, net2, net3, net4 = str(ns1), str(ns2), str(ns3), str(ns4) + + ip(f"netns set {net3} {LINK_NETNSID}", ns=str(net2)) + + cases = [ + # source, "netns", "link-netns", "peer netns", expected + (net1, None, None, None, None), + (net1, net2, None, None, None), + (net2, None, net3, None, LINK_NETNSID), + (net1, net2, net3, None, None), + (net2, None, None, net3, LINK_NETNSID), + (net1, net2, None, net3, LINK_NETNSID), + (net2, None, net2, net3, LINK_NETNSID), + (net1, net2, net4, net3, LINK_NETNSID), + ] + + for src_net, netns, link_netns, peer_netns, exp in cases: + tgt_net = netns or src_net + for typ in types: + cmd = "link add" + if netns: + cmd += f" netns {netns}" + if link_netns: + cmd += f" link-netns {link_netns}" + cmd += f" foo type {typ}" + if peer_netns: + cmd += f" peer netns {peer_netns}" + ip(cmd, ns=src_net) + ksft_true(validate_link_netns(tgt_net, "foo", exp), + f"{typ} peer_netns validation failed") + ip(f"link del foo", ns=tgt_net) + + +def main() -> None: + ksft_run([test_event, test_link_net, test_peer_net]) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/net/netns-name.sh b/tools/testing/selftests/net/netns-name.sh index 6974474c26f3..0be1905d1f2f 100755 --- a/tools/testing/selftests/net/netns-name.sh +++ b/tools/testing/selftests/net/netns-name.sh @@ -78,6 +78,16 @@ ip -netns $NS link show dev $ALT_NAME 2> /dev/null && fail "Can still find alt-name after move" ip -netns $test_ns link del $DEV || fail +# +# Test no conflict of the same name/ifindex in different netns +# +ip -netns $NS link add name $DEV index 100 type dummy || fail +ip -netns $NS link add netns $test_ns name $DEV index 100 type dummy || + fail "Can create in netns without moving" +ip -netns $test_ns link show dev $DEV >> /dev/null || fail "Device not found" +ip -netns $NS link del $DEV || fail +ip -netns $test_ns link del $DEV || fail + echo -ne "$(basename $0) \t\t\t\t" if [ $RET_CODE -eq 0 ]; then echo "[ OK ]"