From: Breno Leitao <leitao@debian.org>
To: Jakub Kicinski <kuba@kernel.org>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>,
Mahe Tardy <mahe.tardy@gmail.com>,
bpf@vger.kernel.org, andrew+netdev@lunn.ch, andrii@kernel.org,
ast@kernel.org, daniel@iogearbox.net, davem@davemloft.net,
eddyz87@gmail.com, edumazet@google.com,
john.fastabend@gmail.com, martin.lau@linux.dev,
pabeni@redhat.com, song@kernel.org, liamwisehart@meta.com
Subject: Re: [PATCH v1 1/4] bpf: Add netpoll kfuncs for sending UDP packets
Date: Thu, 16 Jul 2026 01:51:16 -0700 [thread overview]
Message-ID: <aliZnM1dSGKQEASf@gmail.com> (raw)
In-Reply-To: <20260512163255.34162f1a@kernel.org>
On Tue, May 12, 2026 at 04:32:55PM -0700, Jakub Kicinski wrote:
> I think you may be overly optimistic on the dependability of netpoll.
> Rik has added support for serial scraping at Meta because netconsole
> misses a lot of crucial alerts. And I can confirm there's a bunch of
> errors that appear in that dataset that are missed by netcons.
Unrelated to the discussion above, I'm curious about the nature of these
issues. Are the primary problems related to try-lock failures—where
packets get queued after failing to acquire the TX queue lock, then fail
again during queue_process due to the same lock contention?
next prev parent reply other threads:[~2026-07-16 8:51 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-11 8:53 [PATCH v1 0/4] bpf: Introduce bpf_netpoll Mahe Tardy
2026-05-11 8:53 ` [PATCH v1 1/4] bpf: Add netpoll kfuncs for sending UDP packets Mahe Tardy
2026-05-11 9:40 ` bot+bpf-ci
2026-05-11 9:51 ` Mahe Tardy
2026-05-11 12:05 ` Daniel Borkmann
2026-05-12 8:51 ` Mahe Tardy
2026-05-12 1:20 ` Jakub Kicinski
2026-05-12 1:59 ` Alexei Starovoitov
2026-05-12 2:36 ` Jakub Kicinski
2026-05-12 2:59 ` Alexei Starovoitov
2026-05-12 13:53 ` Jakub Kicinski
2026-05-12 20:25 ` Alexei Starovoitov
2026-05-12 23:32 ` Jakub Kicinski
2026-05-13 1:16 ` Alexei Starovoitov
2026-05-13 1:31 ` Song Liu
2026-07-16 8:51 ` Breno Leitao [this message]
2026-05-11 8:53 ` [PATCH v1 2/4] selftests/bpf: Add netpoll kfunc sanity test Mahe Tardy
2026-05-11 8:53 ` [PATCH v1 3/4] selftests/bpf: Add netpoll kfunc IPv6 variant test Mahe Tardy
2026-05-11 8:53 ` [PATCH v1 4/4] selftests/bpf: Add netpoll setup basic tests Mahe Tardy
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