From: Stanislav Fomichev <sdf.kernel@gmail.com>
To: Mahe Tardy <mahe.tardy@gmail.com>
Cc: bpf@vger.kernel.org, andrii@kernel.org, ast@kernel.org,
daniel@iogearbox.net, john.fastabend@gmail.com, jordan@jrife.io,
martin.lau@linux.dev, yonghong.song@linux.dev,
emil@etsalapatis.com, netdev@vger.kernel.org,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
davem@davemloft.net, horms@kernel.org
Subject: Re: [PATCH bpf-next v11 4/5] selftests/bpf: add bpf_icmp_send recursion test
Date: Thu, 9 Jul 2026 17:13:03 -0700 [thread overview]
Message-ID: <alA5Bh7tICCSqgX_@devvm7509.cco0.facebook.com> (raw)
In-Reply-To: <20260709144900.245904-5-mahe.tardy@gmail.com>
On 07/09, Mahe Tardy wrote:
> This test is similar to test_icmp_send_unreach_cgroup but checks that,
> in case of recursion, meaning that the BPF program calling the kfunc was
> re-triggered by the icmp_send done by the kfunc, the kfunc will stop
> early and return -EBUSY.
>
> The test attaches to the root cgroup to ensure the ICMP packet generated
> by the kfunc re-triggers the BPF program.
>
> Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
> Reviewed-by: Jordan Rife <jordan@jrife.io>
> Signed-off-by: Mahe Tardy <mahe.tardy@gmail.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
next prev parent reply other threads:[~2026-07-10 0:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-09 14:48 [PATCH bpf-next v11 0/5] bpf: add icmp_send kfunc Mahe Tardy
2026-07-09 14:48 ` [PATCH bpf-next v11 1/5] bpf: add bpf_icmp_send kfunc Mahe Tardy
2026-07-10 0:12 ` Stanislav Fomichev
2026-07-09 14:48 ` [PATCH bpf-next v11 2/5] selftests/bpf: add bpf_icmp_send kfunc cgroup_skb tests Mahe Tardy
2026-07-10 0:12 ` Stanislav Fomichev
2026-07-09 14:48 ` [PATCH bpf-next v11 3/5] selftests/bpf: add bpf_icmp_send kfunc cgroup_skb IPv6 tests Mahe Tardy
2026-07-10 0:12 ` Stanislav Fomichev
2026-07-09 14:48 ` [PATCH bpf-next v11 4/5] selftests/bpf: add bpf_icmp_send recursion test Mahe Tardy
2026-07-10 0:13 ` Stanislav Fomichev [this message]
2026-07-09 14:49 ` [PATCH bpf-next v11 5/5] selftests/bpf: add bpf_icmp_send no route test Mahe Tardy
2026-07-09 15:00 ` sashiko-bot
2026-07-09 15:16 ` Mahe Tardy
2026-07-10 0:13 ` Stanislav Fomichev
2026-07-10 10:00 ` [PATCH bpf-next v11 0/5] bpf: add icmp_send kfunc patchwork-bot+netdevbpf
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