From: Jakub Kicinski <kuba@kernel.org>
To: David Wei <dw@davidwei.uk>
Cc: netdev@vger.kernel.org, Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
Daniel Borkmann <daniel@iogearbox.net>
Subject: Re: [PATCH net-next v1 5/7] selftests/net: add bpf skb forwarding program
Date: Fri, 21 Nov 2025 17:36:19 -0800 [thread overview]
Message-ID: <20251121173619.32584592@kernel.org> (raw)
In-Reply-To: <214709f6-e9e8-471a-9913-26e2ee438fc1@davidwei.uk>
On Fri, 21 Nov 2025 09:40:56 -0800 David Wei wrote:
> On 2025-11-20 19:20, Jakub Kicinski wrote:
> > On Wed, 19 Nov 2025 19:30:14 -0800 David Wei wrote:
> >> This is needed for netkit container datapath selftests. Add two things:
> >>
> >> 1. nk_forward.bpf.c, a bpf program that forwards skbs matching some
> >> IPv6 prefix received on eth0 ifindex to a specified netkit ifindex.
> >> 2. nk_forward.c, a C loader program that accepts eth0/netkit ifindex
> >> and IPv6 prefix.
> >>
> >> Selftests will load and unload this bpf program via the loader.
> >
> > Is the skel stuff necessary? For XDP we populate the map with bpftool.
>
> I have no idea what I'm doing with bpf and was copying from
> libbpf-bootstrap :D I'll use bpftool to attach the bpf prog to tc
> ingress + set the vars. If xdp is using bpftool then I presume it is
> already a dependency on the DUT?
Yes, FWIW tools/testing/selftests/drivers/net/xdp.py is what I meant by
XDP
next prev parent reply other threads:[~2025-11-22 1:36 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-20 3:30 [PATCH net-next v1 0/7] selftests/net: add netkit netns ping test David Wei
2025-11-20 3:30 ` [PATCH net-next v1 1/7] selftests/net: add suffix to ksft_run David Wei
2025-11-21 3:13 ` Jakub Kicinski
2025-11-22 3:28 ` David Wei
2025-11-20 3:30 ` [PATCH net-next v1 2/7] selftests/net: add MemPrvEnv env David Wei
2025-11-21 3:18 ` Jakub Kicinski
2025-11-21 17:14 ` David Wei
2025-11-22 1:41 ` Jakub Kicinski
2025-11-22 2:24 ` David Wei
2025-11-20 3:30 ` [PATCH net-next v1 3/7] selftests/net: modify iou-zcrx.py to use MemPrvEnv David Wei
2025-11-20 3:30 ` [PATCH net-next v1 4/7] selftests/net: add rand_ifname() helper David Wei
2025-11-21 3:19 ` Jakub Kicinski
2025-11-21 17:19 ` David Wei
2025-11-20 3:30 ` [PATCH net-next v1 5/7] selftests/net: add bpf skb forwarding program David Wei
2025-11-21 3:20 ` Jakub Kicinski
2025-11-21 17:40 ` David Wei
2025-11-22 1:36 ` Jakub Kicinski [this message]
2025-11-20 3:30 ` [PATCH net-next v1 6/7] selftests/net: add LOCAL_PREFIX_V{4,6} env to HW selftests David Wei
2025-11-21 3:24 ` Jakub Kicinski
2025-11-21 17:19 ` David Wei
2025-11-20 3:30 ` [PATCH net-next v1 7/7] selftests/net: add a netkit netns ping test David Wei
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