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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Joe Damato , Wei Wang , Bobby Eshleman , Stanislav Fomichev , Nikolay Aleksandrov Subject: [PATCH net-next v2 0/4] selftests/net: add netkit container env and test Date: Sun, 1 Mar 2026 21:33:11 -0800 Message-ID: <20260302053315.1919859-1-dw@davidwei.uk> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a new Python selftest env NetDrvContEnv that sets up a pair of netkit netdevs, with one inside of a netns, and a bpf prog that forwards skbs from NETIF to the netkit inside the netns. NETIF = "eth0" LOCAL_V6 = "2001:db8::1" REMOTE_V6 = "2001:db8::2" LOCAL_PREFIX_V6 = "fd00:cafe::" +-----------------------------+ +------------------------------+ dst | INIT NS | | TEST NS | fd00: | +-------------+ | | | cafe:: | | NETIF | | bpf | | 2:2 +---|>| 2001:db8::1 | |redirect| +-------------------------+ | | | | |-------------|--------|>| Netkit | | | | +-------------+ | _peer | | nk_guest | | | | +-------------+ Netkit pair | | | fe80::2/64 | | | | | Netkit |.............|........|>| fd00:cafe::2:2/64 | | | | | nk_host | | | +-------------------------+ | | | | fe80::1/64 | | | | | | +-------------+ | | route: | | | | | default | | | route: | | via fe80::1 dev nk_guest | | | fd00:cafe::2:2/128 | +------------------------------+ | | via fe80::2 dev nk_host | | +-----------------------------+ | | +---------------+ | | REMOTE | +---| 2001:db8::2 | +---------------+ I will use this series for queue leasing selftests. Include a basic ping test in this series as demonstration. v2: - remove LOCAL_PREFIX_V4 in docs - mention in docs that LOCAL_PREFIX_V6 must not match LOCAL_V6 - skip test if LOCAL_PREFIX_V6 matches LOCAL_V6 - move NetDrvContEnv class vars above parent ctor - improve ASCII diagram to show remote, route, example addrs - use Python ipaddress instead of str manipulations - set forwarding/accept_ra David Wei (4): selftests/net: Add bpf skb forwarding program selftests/net: Export Netlink class via lib.py selftests/net: Add env for container based tests selftests/net: Add netkit container ping test .../testing/selftests/drivers/net/README.rst | 38 ++++ .../testing/selftests/drivers/net/hw/Makefile | 1 + tools/testing/selftests/drivers/net/hw/config | 3 + .../drivers/net/hw/lib/py/__init__.py | 7 +- .../selftests/drivers/net/hw/nk_forward.bpf.c | 49 +++++ .../selftests/drivers/net/hw/nk_netns.py | 23 ++ .../selftests/drivers/net/lib/py/__init__.py | 11 +- .../selftests/drivers/net/lib/py/env.py | 208 ++++++++++++++++++ .../testing/selftests/net/lib/py/__init__.py | 4 +- tools/testing/selftests/net/lib/py/ynl.py | 4 +- 10 files changed, 336 insertions(+), 12 deletions(-) create mode 100644 tools/testing/selftests/drivers/net/hw/nk_forward.bpf.c create mode 100755 tools/testing/selftests/drivers/net/hw/nk_netns.py -- 2.47.3