From: Martin KaFai Lau <martin.lau@linux.dev>
To: Jason Xing <kerneljasonxing@gmail.com>
Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, dsahern@kernel.org,
willemdebruijn.kernel@gmail.com, willemb@google.com,
ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev,
john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me,
haoluo@google.com, jolsa@kernel.org, horms@kernel.org,
bpf@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [RFC PATCH net-next v6 13/13] bpf: add simple bpf tests in the tx path for so_timestamping feature
Date: Mon, 27 Jan 2025 15:49:11 -0800 [thread overview]
Message-ID: <29073a9e-23ea-49c2-b0ad-d33bd3ea8974@linux.dev> (raw)
In-Reply-To: <CAL+tcoCpJESydmRXp9ASeXYjFkjOyXn+dF+7dYa0Ek6DdnMHKw@mail.gmail.com>
On 1/24/25 7:42 PM, Jason Xing wrote:
>> Please also add some details on how the UDP BPF_SOCK_OPS_TS_TCP_SND_CB (or to be
>> renamed to BPF_SOCK_OPS_TS_SND_CB ?) will look like. It is the only callback
>> that I don't have a clear idea for UDP.
> I think I will rename it as you said. But I wonder if I can add more
> details about UDP after this series gets merged which should not be
> too late. After this series, I will carefully consider and test how we
> use for UDP type.
Not asking for a full UDP implementation, having this set staying with TCP is
ok. We have pretty clear idea on all the new TS_*_CB will work in UDP except the
TS_SND_CB.
I am asking at least a description on where this SND hook will be in UDP and how
the delay will be measured from the udp_sendmsg(). I haven't looked, so the
question. It is better to get some visibility first instead of scrambling to
change it after landing to -next.
next prev parent reply other threads:[~2025-01-27 23:49 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-21 1:28 [RFC PATCH net-next v6 00/13] net-timestamp: bpf extension to equip applications transparently Jason Xing
2025-01-21 1:28 ` [RFC PATCH net-next v6 01/13] net-timestamp: add support for bpf_setsockopt() Jason Xing
2025-01-21 1:28 ` [RFC PATCH net-next v6 02/13] net-timestamp: prepare for timestamping callbacks use Jason Xing
2025-01-21 4:25 ` kernel test robot
2025-01-21 4:36 ` kernel test robot
2025-01-21 5:07 ` Jason Xing
2025-01-21 5:08 ` Jason Xing
2025-01-21 1:28 ` [RFC PATCH net-next v6 03/13] bpf: stop UDP sock accessing TCP fields in bpf callbacks Jason Xing
2025-01-24 23:40 ` Martin KaFai Lau
2025-01-25 0:28 ` Jason Xing
2025-01-28 1:34 ` Jason Xing
2025-01-21 1:28 ` [RFC PATCH net-next v6 04/13] bpf: stop UDP sock accessing TCP fields in sock_op BPF CALLs Jason Xing
2025-01-25 0:28 ` Martin KaFai Lau
2025-01-25 1:15 ` Jason Xing
2025-01-25 1:32 ` Jason Xing
2025-01-25 2:25 ` Martin KaFai Lau
2025-01-25 2:58 ` Jason Xing
2025-01-25 3:12 ` Martin KaFai Lau
2025-01-25 3:43 ` Jason Xing
2025-01-21 1:28 ` [RFC PATCH net-next v6 05/13] net-timestamp: prepare for isolating two modes of SO_TIMESTAMPING Jason Xing
2025-01-21 1:28 ` [RFC PATCH net-next v6 06/13] net-timestamp: support SCM_TSTAMP_SCHED for bpf extension Jason Xing
2025-01-25 0:38 ` Martin KaFai Lau
2025-01-25 1:16 ` Jason Xing
2025-01-21 1:28 ` [RFC PATCH net-next v6 07/13] net-timestamp: support sw SCM_TSTAMP_SND " Jason Xing
2025-01-25 0:40 ` Martin KaFai Lau
2025-01-25 1:17 ` Jason Xing
2025-01-21 1:28 ` [RFC PATCH net-next v6 08/13] net-timestamp: support hw " Jason Xing
2025-01-25 0:46 ` Martin KaFai Lau
2025-01-25 1:18 ` Jason Xing
2025-01-25 1:29 ` Martin KaFai Lau
2025-01-25 1:35 ` Jason Xing
2025-01-25 2:36 ` Martin KaFai Lau
2025-01-25 2:59 ` Jason Xing
2025-01-21 1:28 ` [RFC PATCH net-next v6 09/13] net-timestamp: support SCM_TSTAMP_ACK " Jason Xing
2025-01-21 1:28 ` [RFC PATCH net-next v6 10/13] net-timestamp: make TCP tx timestamp bpf extension work Jason Xing
2025-01-21 1:28 ` [RFC PATCH net-next v6 11/13] net-timestamp: add a new callback in tcp_tx_timestamp() Jason Xing
2025-01-25 0:50 ` Martin KaFai Lau
2025-01-25 1:21 ` Jason Xing
2025-01-21 1:29 ` [RFC PATCH net-next v6 12/13] net-timestamp: introduce cgroup lock to avoid affecting non-bpf cases Jason Xing
2025-01-25 1:09 ` Martin KaFai Lau
2025-01-25 1:25 ` Jason Xing
2025-01-21 1:29 ` [RFC PATCH net-next v6 13/13] bpf: add simple bpf tests in the tx path for so_timestamping feature Jason Xing
2025-01-25 3:07 ` Martin KaFai Lau
2025-01-25 3:42 ` Jason Xing
2025-01-27 23:49 ` Martin KaFai Lau [this message]
2025-01-28 0:19 ` Jason Xing
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