From patchwork Tue Apr 8 08:16:51 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hangbin Liu X-Patchwork-Id: 879215 Received: from mail-pl1-f173.google.com (mail-pl1-f173.google.com [209.85.214.173]) (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 C64732641E9; Tue, 8 Apr 2025 08:17:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.173 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744100243; cv=none; b=H0y4KEwLTEQtJt1MlntBMqvgAVNnF4vHYjeI2/DcXUxPdO8OH7ZVtmVH0ZSFbiUI8jSvWClJvj6RoDOi2oSXv1jomFcHzdHcKr0pGhnuDIFxjfrR6+Pdj04AD7uC3Ra5egq1l/OoRDIB0KMl7Z+f8y48fIyl73Hw/856ib1zUMM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744100243; c=relaxed/simple; bh=2csU+79UdMjWyhK9Iv2wecuNUMlZMFfRyVTWj9zto78=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=cOPQUkgYb5kt8kq4dSIUEKB1Lh9OIcNmvhkAHVObR/gByRIl7zusvaVXLxrOAW44xwWuLwUisXN/1yiOwlhAK9nA2zNmoTyHfbyRws3akuQMy1vM0wTX1nXV1GBJr8uvBCB574KP2ZSjeZN0cNZ3EoLidkb0OOQGYe3ke/6hktY= 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=mG6qFarC; arc=none smtp.client-ip=209.85.214.173 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="mG6qFarC" Received: by mail-pl1-f173.google.com with SMTP id d9443c01a7336-225477548e1so48765295ad.0; Tue, 08 Apr 2025 01:17:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1744100237; x=1744705037; 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=v7d+kcHAwN3g2veRIP35/Cx+qKGOfglBxZ9UJox5e0Y=; b=mG6qFarCOby/Zj+J+e5XgFHNyPJZoueeXj8uEHLsp8vZkgXf+YzGFegrVFwAL5/oJK LJj2se3lFy1OyfeV824Qjti6ls/Nj/enXpYLa3grxS3K7XN9Pg0jJiRmoDaWPF/f0Lsk AiNGCBBQCNVqPV9BhSwTeh6HvMHlGFLmN5s9h1ca34Y9YHAWXsd18c0eTTj/ZEC9hRvp kKk6BRQnx3GnF1iboDV5U6cxyH/5IubbEdGcUiRfAcbNW2NIWcvO6YP1EHtODROMWPhq QRCrl343NIy3MNUJlc/5JtrmNQlJbIAj5Bl1ILKKu4TKIY8VT24a2+9AvW10bbcKyB4v nSxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744100237; x=1744705037; 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=v7d+kcHAwN3g2veRIP35/Cx+qKGOfglBxZ9UJox5e0Y=; b=NHq9+ZVNObiPn1y/O4g3Pg0KubRGAZWkAypQfqUJ2JOeyIkcwmCk/sYKmvjMRaWXpT A6xUVKU4GVfLo74ROKI5RHFe48DVyeFzArg3vcJo6m7Rp6gCOgbz+qC38z31FL9ImMdS a0p29t6rUQa/MTEXRDEgXywnYvpgZZN/MceyioJrwbmyoKjFRGcSnoftKAEQ6BjvwuG1 EcYJBb1kdiB9On7Q2UaI4LaKaaoB6BVqSc3sgjmPYa7sX/fhB4WOMe3okvjwSd/ctfQy bXCffFLsQnkxpy7DvCh3E9BXXS17kHYC2kI2mNr6DRxFb8fOQ3KMp1gITCnKUik34YPG zhZA== X-Forwarded-Encrypted: i=1; AJvYcCUEpGHCgxnXyhTNFquFuvFMMiIcz2eQe7GtgrXumGE8nl74wWPFCGP9ahNi1Qp7GtqTEbx7UlWMPRX49T8=@vger.kernel.org, AJvYcCUzjE0PzSh083jxWfRDLIRdE5LCLWIrSDoDHo7jrcM5uBrrqX2/HzMco+K19hb5oSkq0VCFi9YfrovERlvOkV9i@vger.kernel.org X-Gm-Message-State: AOJu0YxtsCvq+ckAv4PL+Qzbn0ms607Te6HdLvXwiJI3zZV6AEMjW7WU wnORMTEJ7qjW4ECahc3UFwNR+g3lYUkuvI3x9dmMBEFjKufE+DBdZSNTockqml8= X-Gm-Gg: ASbGncuwHT9TMcoAc+FY1D8KV4AeuiSBO06/AVMCS1nHxxNXdnW1BLqukV0UkoQKN4v nNfs9mm21luBUVWB3yVB8QhlIQFisybjnzJ8nOIhPsZachYxgwK3Mx9qB9+YRt0bc5fwDGj241i lFhEXSc0N1Dz5bm+mgFdxBJ0qU34Bbv+Kdt47zkewNNmzbRuI7ljXlZxEKS2t5Jf7VwyQgz05oz VwrDNl3QtNP4amIFl3vdT65nYRqZaNkIG8PYXx0l/HziWpCoBWImsIeB+Dnle2iBHWncnHTmH1g KsuGLpXuERtdilEP3921IIDn85EvGv1AUOJF3fjFrMlyDkeZZqpwy6sxu6YwKReH26yNMA== X-Google-Smtp-Source: AGHT+IFhbmP2Y/X1Y+SFXIUub7l0AG/Zk7maUw6wnkw48Kd+ctJdyuBAxMTAkuTD1VllYRNhyEWJ+A== X-Received: by 2002:a17:902:e809:b0:220:cb1a:da5 with SMTP id d9443c01a7336-22a8a8cec34mr230595595ad.40.1744100236572; Tue, 08 Apr 2025 01:17:16 -0700 (PDT) Received: from fedora.dns.podman ([43.228.180.230]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-229785ada20sm94319535ad.46.2025.04.08.01.17.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Apr 2025 01:17:16 -0700 (PDT) From: Hangbin Liu To: netdev@vger.kernel.org Cc: "Jason A. Donenfeld" , Jakub Kicinski , Shuah Khan , "David S. Miller" , Simon Horman , Phil Sutter , Florian Westphal , Petr Mladek , Yoann Congal , wireguard@lists.zx2c4.com, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Hangbin Liu Subject: [PATCHv6 net-next 1/2] wireguard: selftests: convert iptables to nft Date: Tue, 8 Apr 2025 08:16:51 +0000 Message-ID: <20250408081652.1330-2-liuhangbin@gmail.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20250408081652.1330-1-liuhangbin@gmail.com> References: <20250408081652.1330-1-liuhangbin@gmail.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Convert the selftest to nft as it is the replacement for iptables, which is used by default in most releases. Signed-off-by: Hangbin Liu --- tools/testing/selftests/wireguard/netns.sh | 29 ++++++++++++++-------- 1 file changed, 19 insertions(+), 10 deletions(-) diff --git a/tools/testing/selftests/wireguard/netns.sh b/tools/testing/selftests/wireguard/netns.sh index 55500f901fbc..8b840fef90af 100755 --- a/tools/testing/selftests/wireguard/netns.sh +++ b/tools/testing/selftests/wireguard/netns.sh @@ -75,6 +75,11 @@ pp ip netns add $netns1 pp ip netns add $netns2 ip0 link set up dev lo +# init nft tables +n0 nft add table ip wgtest +n1 nft add table ip wgtest +n2 nft add table ip wgtest + ip0 link add dev wg0 type wireguard ip0 link set wg0 netns $netns1 ip0 link add dev wg0 type wireguard @@ -196,13 +201,14 @@ ip1 link set wg0 mtu 1300 ip2 link set wg0 mtu 1300 n1 wg set wg0 peer "$pub2" endpoint 127.0.0.1:2 n2 wg set wg0 peer "$pub1" endpoint 127.0.0.1:1 -n0 iptables -A INPUT -m length --length 1360 -j DROP +n0 nft add chain ip wgtest INPUT { type filter hook input priority filter \; policy accept \; } +n0 nft add rule ip wgtest INPUT meta length 1360 drop n1 ip route add 192.168.241.2/32 dev wg0 mtu 1299 n2 ip route add 192.168.241.1/32 dev wg0 mtu 1299 n2 ping -c 1 -W 1 -s 1269 192.168.241.1 n2 ip route delete 192.168.241.1/32 dev wg0 mtu 1299 n1 ip route delete 192.168.241.2/32 dev wg0 mtu 1299 -n0 iptables -F INPUT +n0 nft flush table ip wgtest ip1 link set wg0 mtu $orig_mtu ip2 link set wg0 mtu $orig_mtu @@ -335,7 +341,8 @@ n0 bash -c 'printf 1 > /proc/sys/net/ipv4/ip_forward' [[ -e /proc/sys/net/netfilter/nf_conntrack_udp_timeout ]] || modprobe nf_conntrack n0 bash -c 'printf 2 > /proc/sys/net/netfilter/nf_conntrack_udp_timeout' n0 bash -c 'printf 2 > /proc/sys/net/netfilter/nf_conntrack_udp_timeout_stream' -n0 iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -d 10.0.0.0/24 -j SNAT --to 10.0.0.1 +n0 nft add chain ip wgtest POSTROUTING { type nat hook postrouting priority srcnat\; policy accept \; } +n0 nft add rule ip wgtest POSTROUTING ip saddr 192.168.1.0/24 ip daddr 10.0.0.0/24 snat to 10.0.0.1 n1 wg set wg0 peer "$pub2" endpoint 10.0.0.100:2 persistent-keepalive 1 n1 ping -W 1 -c 1 192.168.241.2 @@ -349,10 +356,11 @@ n1 wg set wg0 peer "$pub2" persistent-keepalive 0 # Test that sk_bound_dev_if works n1 ping -I wg0 -c 1 -W 1 192.168.241.2 # What about when the mark changes and the packet must be rerouted? -n1 iptables -t mangle -I OUTPUT -j MARK --set-xmark 1 +n1 nft add chain ip wgtest OUTPUT { type route hook output priority mangle\; policy accept \; } +n1 nft add rule ip wgtest OUTPUT meta mark set 0x1 n1 ping -c 1 -W 1 192.168.241.2 # First the boring case n1 ping -I wg0 -c 1 -W 1 192.168.241.2 # Then the sk_bound_dev_if case -n1 iptables -t mangle -D OUTPUT -j MARK --set-xmark 1 +n1 nft flush table ip wgtest # Test that onion routing works, even when it loops n1 wg set wg0 peer "$pub3" allowed-ips 192.168.242.2/32 endpoint 192.168.241.2:5 @@ -386,16 +394,17 @@ n1 ping -W 1 -c 100 -f 192.168.99.7 n1 ping -W 1 -c 100 -f abab::1111 # Have ns2 NAT into wg0 packets from ns0, but return an icmp error along the right route. -n2 iptables -t nat -A POSTROUTING -s 10.0.0.0/24 -d 192.168.241.0/24 -j SNAT --to 192.168.241.2 -n0 iptables -t filter -A INPUT \! -s 10.0.0.0/24 -i vethrs -j DROP # Manual rpfilter just to be explicit. +n2 nft add chain ip wgtest POSTROUTING { type nat hook postrouting priority srcnat\; policy accept \; } +n2 nft add rule ip wgtest POSTROUTING ip saddr 10.0.0.0/24 ip daddr 192.168.241.0/24 snat to 192.168.241.2 +n0 nft add chain ip wgtest INPUT { type filter hook input priority filter \; policy accept \; } +n0 nft add rule ip wgtest INPUT iifname "vethrs" ip saddr != 10.0.0.0/24 drop n2 bash -c 'printf 1 > /proc/sys/net/ipv4/ip_forward' ip0 -4 route add 192.168.241.1 via 10.0.0.100 n2 wg set wg0 peer "$pub1" remove [[ $(! n0 ping -W 1 -c 1 192.168.241.1 || false) == *"From 10.0.0.100 icmp_seq=1 Destination Host Unreachable"* ]] -n0 iptables -t nat -F -n0 iptables -t filter -F -n2 iptables -t nat -F +n0 nft flush table ip wgtest +n2 nft flush table ip wgtest ip0 link del vethrc ip0 link del vethrs ip1 link del wg0