From: Stanislav Fomichev <sdf.kernel@gmail.com>
To: Bobby Eshleman <bobbyeshleman@gmail.com>
Cc: Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Shuah Khan <skhan@linuxfoundation.org>,
Alex Shi <alexs@kernel.org>, Yanteng Si <si.yanteng@linux.dev>,
Dongliang Mu <dzm91@hust.edu.cn>,
Michael Chan <michael.chan@broadcom.com>,
Pavan Chebbi <pavan.chebbi@broadcom.com>,
Joshua Washington <joshwash@google.com>,
Harshitha Ramamurthy <hramamurthy@google.com>,
Saeed Mahameed <saeedm@nvidia.com>,
Tariq Toukan <tariqt@nvidia.com>, Mark Bloch <mbloch@nvidia.com>,
Leon Romanovsky <leon@kernel.org>,
Alexander Duyck <alexanderduyck@fb.com>,
kernel-team@meta.com, Daniel Borkmann <daniel@iogearbox.net>,
Nikolay Aleksandrov <razor@blackwall.org>,
Shuah Khan <shuah@kernel.org>,
dw@davidwei.uk, mohsin.bashr@gmail.com, willemb@google.com,
jiang.kun2@zte.com.cn, xu.xin16@zte.com.cn,
wang.yaxin@zte.com.cn, netdev@vger.kernel.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rdma@vger.kernel.org, bpf@vger.kernel.org,
linux-kselftest@vger.kernel.org,
Stanislav Fomichev <sdf@fomichev.me>,
Mina Almasry <almasrymina@google.com>,
Bobby Eshleman <bobbyeshleman@meta.com>
Subject: Re: [PATCH net-next v3 7/8] selftests: drv-net: add primary_rx_redirect support to NetDrvContEnv
Date: Fri, 8 May 2026 08:03:32 -0700 [thread overview]
Message-ID: <af37O7TXJm9wPl1h@devvm7509.cco0.facebook.com> (raw)
In-Reply-To: <20260507-tcp-dm-netkit-v3-7-52821445867c@meta.com>
On 05/07, Bobby Eshleman wrote:
> From: Bobby Eshleman <bobbyeshleman@meta.com>
>
> When sending from a namespace that has access to a netkit device with a
> leased queue, the nk primary in the host namespace needs to redirect its
> RX to the physical device. This patch adds that redirection bpf program
> and teaches the harness to install it.
>
> Add primary_rx_redirect=False parameter to NetDrvContEnv.__init__().
> When enabled, _attach_primary_rx_redirect_bpf() attaches a new BPF TC
> program (nk_primary_rx_redirect.bpf.c) to the primary (host-side) netkit
> interface. The program redirects non-ICMPv6 IPv6 packets to the physical
> NIC via bpf_redirect_neigh(), with the physical ifindex configured via
> the .bss map. ICMPv6 is left on the host's netkit primary so IPv6
> neighbor discovery still work locally.
>
> Extract _find_bss_map_id() from _attach_bpf() into a reusable helper so
> other BPF attachment methods can use it.
>
> Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
next prev parent reply other threads:[~2026-05-08 15:03 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-08 2:27 [PATCH net-next v3 0/8] net: devmem: support devmem with netkit devices Bobby Eshleman
2026-05-08 2:27 ` [PATCH net-next v3 1/8] net: convert netmem_tx flag to enum Bobby Eshleman
2026-05-08 14:56 ` Stanislav Fomichev
2026-05-08 16:11 ` Bobby Eshleman
2026-05-08 2:27 ` [PATCH net-next v3 2/8] net: netkit: declare NETMEM_TX_NO_DMA mode Bobby Eshleman
2026-05-08 14:57 ` Stanislav Fomichev
2026-05-08 2:27 ` [PATCH net-next v3 3/8] net: devmem: support TX over NETMEM_TX_NO_DMA devices Bobby Eshleman
2026-05-08 15:01 ` Stanislav Fomichev
2026-05-08 16:19 ` Bobby Eshleman
2026-05-08 20:44 ` Jakub Kicinski
2026-05-08 20:47 ` Jakub Kicinski
2026-05-08 21:28 ` Bobby Eshleman
2026-05-08 22:27 ` Jakub Kicinski
2026-05-08 23:03 ` Bobby Eshleman
2026-05-08 2:27 ` [PATCH net-next v3 4/8] selftests: drv-net: ncdevmem: add -n flag to skip NIC configuration Bobby Eshleman
2026-05-08 15:01 ` Stanislav Fomichev
2026-05-08 2:27 ` [PATCH net-next v3 5/8] selftests: drv-net: make attr _nk_guest_ifname public Bobby Eshleman
2026-05-08 15:01 ` Stanislav Fomichev
2026-05-08 2:27 ` [PATCH net-next v3 6/8] selftests: drv-net: refactor devmem command builders into lib module Bobby Eshleman
2026-05-08 15:03 ` Stanislav Fomichev
2026-05-08 16:19 ` Bobby Eshleman
2026-05-08 2:27 ` [PATCH net-next v3 7/8] selftests: drv-net: add primary_rx_redirect support to NetDrvContEnv Bobby Eshleman
2026-05-08 15:03 ` Stanislav Fomichev [this message]
2026-05-08 2:27 ` [PATCH net-next v3 8/8] selftests: drv-net: add netkit devmem tests Bobby Eshleman
2026-05-08 15:03 ` Stanislav Fomichev
2026-05-10 20:33 ` [PATCH net-next v3 0/8] net: devmem: support devmem with netkit devices Zhu Yanjun
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