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From: Marcus Wichelmann <marcus.wichelmann@hetzner-cloud.de>
To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	bpf@vger.kernel.org, linux-kselftest@vger.kernel.org
Cc: willemdebruijn.kernel@gmail.com, jasowang@redhat.com,
	andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,
	kuba@kernel.org, pabeni@redhat.com, andrii@kernel.org,
	eddyz87@gmail.com, mykolal@fb.com, ast@kernel.org,
	daniel@iogearbox.net, martin.lau@linux.dev, song@kernel.org,
	yonghong.song@linux.dev, john.fastabend@gmail.com,
	kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com,
	jolsa@kernel.org, shuah@kernel.org, hawk@kernel.org
Subject: Re: [PATCH bpf-next v3 4/6] selftests/bpf: refactor xdp_context_functional test and bpf program
Date: Tue, 25 Feb 2025 16:07:27 +0100	[thread overview]
Message-ID: <efcc6e11-2d3a-489e-80bc-cbc3f72f7afa@hetzner-cloud.de> (raw)
In-Reply-To: <20250224152909.3911544-5-marcus.wichelmann@hetzner-cloud.de>

Am 24.02.25 um 16:29 schrieb Marcus Wichelmann:
> [...]
> +	/* By default, Linux sends IPv6 multicast listener reports which
> +	 * interfere with this test. Set the IFF_NOARP flag to ensure
> +	 * silence on the interface.
> +	 */
> +	SYS(close, "ip link set dev " RX_NAME " arp off");
>   	SYS(close, "ip link set dev " RX_NAME " up");

Hm, setting the NOARP flag seems to have not been sufficient to fix the flaky
test:
https://github.com/kernel-patches/bpf/actions/runs/13507111620/job/37739614229

I was not able to reproduce it locally or with my own CI runs unfortunately, but
I'll try something else in the next patch version which should definitely stop
IPv6 multicast listener report packets from messing with the tests.

  parent reply	other threads:[~2025-02-25 15:07 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-24 15:29 [PATCH bpf-next v3 0/6] XDP metadata support for tun driver Marcus Wichelmann
2025-02-24 15:29 ` [PATCH bpf-next v3 1/6] net: tun: enable XDP metadata support Marcus Wichelmann
2025-02-26  5:50   ` Jason Wang
2025-02-24 15:29 ` [PATCH bpf-next v3 2/6] net: tun: enable transfer of XDP metadata to skb Marcus Wichelmann
2025-02-25 18:26   ` Willem de Bruijn
2025-02-26  5:59   ` Jason Wang
2025-02-24 15:29 ` [PATCH bpf-next v3 3/6] selftests/bpf: move open_tuntap to network helpers Marcus Wichelmann
2025-02-25 18:24   ` Willem de Bruijn
2025-02-26  6:31   ` Jason Wang
2025-02-24 15:29 ` [PATCH bpf-next v3 4/6] selftests/bpf: refactor xdp_context_functional test and bpf program Marcus Wichelmann
2025-02-24 17:12   ` Stanislav Fomichev
2025-02-26 15:56     ` Marcus Wichelmann
2025-02-25 15:07   ` Marcus Wichelmann [this message]
2025-02-25 18:23     ` Willem de Bruijn
2025-02-26 17:39       ` Marcus Wichelmann
2025-02-25 18:32   ` Willem de Bruijn
2025-02-26 17:14     ` Marcus Wichelmann
2025-02-24 15:29 ` [PATCH bpf-next v3 5/6] selftests/bpf: add test for XDP metadata support in tun driver Marcus Wichelmann
2025-02-24 17:14   ` Stanislav Fomichev
2025-02-26 18:50     ` Marcus Wichelmann
2025-02-26 19:00       ` Stanislav Fomichev
2025-02-26 19:29         ` Marcus Wichelmann
2025-02-24 15:29 ` [PATCH bpf-next v3 6/6] selftests/bpf: fix file descriptor assertion in open_tuntap helper Marcus Wichelmann
2025-02-25 18:24   ` Willem de Bruijn
2025-02-25 14:55 ` [PATCH bpf-next v3 0/6] XDP metadata support for tun driver Willem de Bruijn
2025-02-25 15:03   ` Marcus Wichelmann
2025-02-25 18:14     ` Willem de Bruijn

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