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| author | Linus Heckemann <git@sphalerite.org> | 2026-02-21 14:48:06 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-02-24 04:33:29 +0300 |
| commit | f77c7b96014471f2c39823ed9fcb42967e7d9ede (patch) | |
| tree | 40eff66dd8a58e78232445f68c9b3dad44e6f045 /tools/testing/selftests | |
| parent | 8bf22c33e7a172fbc72464f4cc484d23a6b412ba (diff) | |
| download | linux-f77c7b96014471f2c39823ed9fcb42967e7d9ede.tar.xz | |
selftests/net: add test for IP-in-IPv6 tunneling
commit 81c734dae203 ("ip6_tunnel: use skb_vlan_inet_prepare() in
__ip6_tnl_rcv()") was fine in and of itself, but its backport to 6.12
(and 6.6) broke IPv4-in-IPv6 tunneling, see [1]. This adds a self-test
for basic IPv4-in-IPv6 and IPv6-in-IPv6 functionality.
[1]: https://lore.kernel.org/all/CAA2RiuSnH_2xc+-W6EnFEG00XjS-dszMq61JEvRjcGS31CBw=g@mail.gmail.com/
Signed-off-by: Linus Heckemann <git@sphalerite.org>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Ricardo B. Marlière <rbm@suse.com>
Tested-by: Ricardo B. Marlière <rbm@suse.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260221114806.1231666-1-git@sphalerite.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/testing/selftests')
| -rw-r--r-- | tools/testing/selftests/net/Makefile | 1 | ||||
| -rwxr-xr-x | tools/testing/selftests/net/ip6_tunnel.sh | 44 |
2 files changed, 45 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index afdea6d95bde..e97c90886f34 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -44,6 +44,7 @@ TEST_PROGS := \ io_uring_zerocopy_tx.sh \ ioam6.sh \ ip6_gre_headroom.sh \ + ip6_tunnel.sh \ ip_defrag.sh \ ip_local_port_range.sh \ ipv6_flowlabel.sh \ diff --git a/tools/testing/selftests/net/ip6_tunnel.sh b/tools/testing/selftests/net/ip6_tunnel.sh new file mode 100755 index 000000000000..fe081a521819 --- /dev/null +++ b/tools/testing/selftests/net/ip6_tunnel.sh @@ -0,0 +1,44 @@ +#!/bin/bash +# Test that IPv4-over-IPv6 tunneling works. + +source lib.sh +set -e + +setup_prepare() { + ip link add transport1 type veth peer name transport2 + + setup_ns ns1 + ip link set transport1 netns $ns1 + ip -n $ns1 address add 2001:db8::1/64 dev transport1 nodad + ip -n $ns1 address add 2001:db8::3/64 dev transport1 nodad + ip -n $ns1 link set transport1 up + ip -n $ns1 link add link transport1 name tunnel4 type ip6tnl mode ipip6 local 2001:db8::1 remote 2001:db8::2 + ip -n $ns1 address add 172.0.0.1/32 peer 172.0.0.2/32 dev tunnel4 + ip -n $ns1 link set tunnel4 up + ip -n $ns1 link add link transport1 name tunnel6 type ip6tnl mode ip6ip6 local 2001:db8::3 remote 2001:db8::4 + ip -n $ns1 address add 2001:db8:6::1/64 dev tunnel6 + ip -n $ns1 link set tunnel6 up + + setup_ns ns2 + ip link set transport2 netns $ns2 + ip -n $ns2 address add 2001:db8::2/64 dev transport2 nodad + ip -n $ns2 address add 2001:db8::4/64 dev transport2 nodad + ip -n $ns2 link set transport2 up + ip -n $ns2 link add link transport2 name tunnel4 type ip6tnl mode ipip6 local 2001:db8::2 remote 2001:db8::1 + ip -n $ns2 address add 172.0.0.2/32 peer 172.0.0.1/32 dev tunnel4 + ip -n $ns2 link set tunnel4 up + ip -n $ns2 link add link transport2 name tunnel6 type ip6tnl mode ip6ip6 local 2001:db8::4 remote 2001:db8::3 + ip -n $ns2 address add 2001:db8:6::2/64 dev tunnel6 + ip -n $ns2 link set tunnel6 up +} + +cleanup() { + cleanup_all_ns + # in case the namespaces haven't been set up yet + ip link delete transport1 &>/dev/null || true +} + +trap cleanup EXIT +setup_prepare +ip netns exec $ns1 ping -q -W1 -c1 172.0.0.2 >/dev/null +ip netns exec $ns1 ping -q -W1 -c1 2001:db8:6::2 >/dev/null |