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Message-Id: <20251209-b4-flowtable-offload-ip6ip6-v2-4-44817f1be5c6@kernel.org>
Date: Tue, 09 Dec 2025 08:35:34 +0100
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: Pablo Neira Ayuso <pablo@...filter.org>,
Jozsef Kadlecsik <kadlec@...filter.org>, Florian Westphal <fw@...len.de>,
Phil Sutter <phil@....cc>, "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>,
David Ahern <dsahern@...nel.org>, Shuah Khan <shuah@...nel.org>
Cc: netfilter-devel@...r.kernel.org, coreteam@...filter.org,
netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
Lorenzo Bianconi <lorenzo@...nel.org>
Subject: [PATCH nf-next v2 4/4] selftests: netfilter: nft_flowtable.sh: Add
IP6IP6 flowtable selftest
Similar to IPIP, introduce specific selftest for IP6IP6 flowtable SW
acceleration in nft_flowtable.sh
Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
---
.../selftests/net/netfilter/nft_flowtable.sh | 62 ++++++++++++++++++----
1 file changed, 53 insertions(+), 9 deletions(-)
diff --git a/tools/testing/selftests/net/netfilter/nft_flowtable.sh b/tools/testing/selftests/net/netfilter/nft_flowtable.sh
index 24b4e60b91451e7ea7f6a041b0335233047c6242..bc98baba56c638cad35478109a3776d6d93c34a8 100755
--- a/tools/testing/selftests/net/netfilter/nft_flowtable.sh
+++ b/tools/testing/selftests/net/netfilter/nft_flowtable.sh
@@ -590,16 +590,28 @@ ip -net "$nsr1" link set tun0 up
ip -net "$nsr1" addr add 192.168.100.1/24 dev tun0
ip netns exec "$nsr1" sysctl net.ipv4.conf.tun0.forwarding=1 > /dev/null
+ip -net "$nsr1" link add name tun6 type ip6tnl local fee1:2::1 remote fee1:2::2
+ip -net "$nsr1" link set tun6 up
+ip -net "$nsr1" addr add fee1:3::1/64 dev tun6 nodad
+
ip -net "$nsr2" link add name tun0 type ipip local 192.168.10.2 remote 192.168.10.1
ip -net "$nsr2" link set tun0 up
ip -net "$nsr2" addr add 192.168.100.2/24 dev tun0
ip netns exec "$nsr2" sysctl net.ipv4.conf.tun0.forwarding=1 > /dev/null
+ip -net "$nsr2" link add name tun6 type ip6tnl local fee1:2::2 remote fee1:2::1
+ip -net "$nsr2" link set tun6 up
+ip -net "$nsr2" addr add fee1:3::2/64 dev tun6 nodad
+
ip -net "$nsr1" route change default via 192.168.100.2
ip -net "$nsr2" route change default via 192.168.100.1
+ip -6 -net "$nsr1" route change default via fee1:3::2
+ip -6 -net "$nsr2" route change default via fee1:3::1
ip -net "$ns2" route add default via 10.0.2.1
+ip -6 -net "$ns2" route add default via dead:2::1
ip netns exec "$nsr1" nft -a insert rule inet filter forward 'meta oif tun0 accept'
+ip netns exec "$nsr1" nft -a insert rule inet filter forward 'meta oif tun6 accept'
ip netns exec "$nsr1" nft -a insert rule inet filter forward \
'meta oif "veth0" tcp sport 12345 ct mark set 1 flow add @f1 counter name routed_repl accept'
@@ -609,28 +621,51 @@ if ! test_tcp_forwarding_nat "$ns1" "$ns2" 1 "IPIP tunnel"; then
ret=1
fi
+if test_tcp_forwarding "$ns1" "$ns2" 1 6 "[dead:2::99]" 12345; then
+ echo "PASS: flow offload for ns1/ns2 IP6IP6 tunnel"
+else
+ echo "FAIL: flow offload for ns1/ns2 with IP6IP6 tunnel" 1>&2
+ ip netns exec "$nsr1" nft list ruleset
+ ret=1
+fi
+
# Create vlan tagged devices for IPIP traffic.
ip -net "$nsr1" link add link veth1 name veth1.10 type vlan id 10
ip -net "$nsr1" link set veth1.10 up
ip -net "$nsr1" addr add 192.168.20.1/24 dev veth1.10
+ip -net "$nsr1" addr add fee1:4::1/64 dev veth1.10 nodad
ip netns exec "$nsr1" sysctl net.ipv4.conf.veth1/10.forwarding=1 > /dev/null
ip netns exec "$nsr1" nft -a insert rule inet filter forward 'meta oif veth1.10 accept'
-ip -net "$nsr1" link add name tun1 type ipip local 192.168.20.1 remote 192.168.20.2
-ip -net "$nsr1" link set tun1 up
-ip -net "$nsr1" addr add 192.168.200.1/24 dev tun1
+
+ip -net "$nsr1" link add name tun0.10 type ipip local 192.168.20.1 remote 192.168.20.2
+ip -net "$nsr1" link set tun0.10 up
+ip -net "$nsr1" addr add 192.168.200.1/24 dev tun0.10
ip -net "$nsr1" route change default via 192.168.200.2
-ip netns exec "$nsr1" sysctl net.ipv4.conf.tun1.forwarding=1 > /dev/null
-ip netns exec "$nsr1" nft -a insert rule inet filter forward 'meta oif tun1 accept'
+ip netns exec "$nsr1" sysctl net.ipv4.conf.tun0/10.forwarding=1 > /dev/null
+ip netns exec "$nsr1" nft -a insert rule inet filter forward 'meta oif tun0.10 accept'
+
+ip -net "$nsr1" link add name tun6.10 type ip6tnl local fee1:4::1 remote fee1:4::2
+ip -net "$nsr1" link set tun6.10 up
+ip -net "$nsr1" addr add fee1:5::1/64 dev tun6.10 nodad
+ip -6 -net "$nsr1" route change default via fee1:5::2
+ip netns exec "$nsr1" nft -a insert rule inet filter forward 'meta oif tun6.10 accept'
ip -net "$nsr2" link add link veth0 name veth0.10 type vlan id 10
ip -net "$nsr2" link set veth0.10 up
ip -net "$nsr2" addr add 192.168.20.2/24 dev veth0.10
+ip -net "$nsr2" addr add fee1:4::2/64 dev veth0.10 nodad
ip netns exec "$nsr2" sysctl net.ipv4.conf.veth0/10.forwarding=1 > /dev/null
-ip -net "$nsr2" link add name tun1 type ipip local 192.168.20.2 remote 192.168.20.1
-ip -net "$nsr2" link set tun1 up
-ip -net "$nsr2" addr add 192.168.200.2/24 dev tun1
+
+ip -net "$nsr2" link add name tun0.10 type ipip local 192.168.20.2 remote 192.168.20.1
+ip -net "$nsr2" link set tun0.10 up
+ip -net "$nsr2" addr add 192.168.200.2/24 dev tun0.10
ip -net "$nsr2" route change default via 192.168.200.1
-ip netns exec "$nsr2" sysctl net.ipv4.conf.tun1.forwarding=1 > /dev/null
+ip netns exec "$nsr2" sysctl net.ipv4.conf.tun0/10.forwarding=1 > /dev/null
+
+ip -net "$nsr2" link add name tun6.10 type ip6tnl local fee1:4::2 remote fee1:4::1
+ip -net "$nsr2" link set tun6.10 up
+ip -net "$nsr2" addr add fee1:5::2/64 dev tun6.10 nodad
+ip -6 -net "$nsr2" route change default via fee1:5::1
if ! test_tcp_forwarding_nat "$ns1" "$ns2" 1 "IPIP tunnel over vlan"; then
echo "FAIL: flow offload for ns1/ns2 with IPIP tunnel over vlan" 1>&2
@@ -638,10 +673,19 @@ if ! test_tcp_forwarding_nat "$ns1" "$ns2" 1 "IPIP tunnel over vlan"; then
ret=1
fi
+if test_tcp_forwarding "$ns1" "$ns2" 1 6 "[dead:2::99]" 12345; then
+ echo "PASS: flow offload for ns1/ns2 IP6IP6 tunnel over vlan"
+else
+ echo "FAIL: flow offload for ns1/ns2 with IP6IP6 tunnel over vlan" 1>&2
+ ip netns exec "$nsr1" nft list ruleset
+ ret=1
+fi
+
# Restore the previous configuration
ip -net "$nsr1" route change default via 192.168.10.2
ip -net "$nsr2" route change default via 192.168.10.1
ip -net "$ns2" route del default via 10.0.2.1
+ip -6 -net "$ns2" route del default via dead:2::1
}
# Another test:
--
2.52.0
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