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selftests/net: Add env for container based tests

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Add an env NetDrvContEnv for container based selftests. This automates
the setup of a netns, netkit pair with one inside the netns, and a BPF
program that forwards skbs from the NETIF host inside the container.

Currently only netkit is used, but other virtual netdevs e.g. veth can
be used too.

Expect netkit container datapath selftests to have a publicly routable
IP prefix to assign to netkit in a container, such that packets will
land on eth0. The BPF skb forward program will then forward such packets
from the host netns to the container netns.

Signed-off-by: David Wei <dw@davidwei.uk>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20260115082603.219152-15-daniel@iogearbox.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
David Wei
2026-01-15 09:26:01 +01:00
committed by Paolo Abeni
parent 61d99ce3df
commit 6be87fbb27
4 changed files with 127 additions and 6 deletions
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7
tools/testing/selftests/drivers/net/README.rst
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@@ -62,6 +62,13 @@ LOCAL_V4, LOCAL_V6, REMOTE_V4, REMOTE_V6
Local and remote endpoint IP addresses.
LOCAL_PREFIX_V4, LOCAL_PREFIX_V6
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Local IP prefix/subnet which can be used to allocate extra IP addresses (for
network name spaces behind macvlan, veth, netkit devices). DUT must be
reachable using these addresses from the endpoint.
REMOTE_TYPE
~~~~~~~~~~~