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: [PATCH bpf-next v9 01/12] bpf: add support for bpf_setsockopt()
Date: Mon, 10 Feb 2025 17:02:59 -0800 [thread overview]
Message-ID: <85d1b9e5-e1c4-452d-af50-e5c3784372ce@linux.dev> (raw)
In-Reply-To: <20250208103220.72294-2-kerneljasonxing@gmail.com>
On 2/8/25 2:32 AM, Jason Xing wrote:
> Users can write the following code to enable the bpf extension:
> int flags = SK_BPF_CB_TX_TIMESTAMPING;
> int opts = SK_BPF_CB_FLAGS;
> bpf_setsockopt(skops, SOL_SOCKET, opts, &flags, sizeof(flags));
The commit message should explain what is added/changed and why it is needed.
The above only tells how it is used, and the subject "bpf: add support for
bpf_setsockopt()" is unclear. Add what support? Also, both get- and
set-sockopt() are changed.
Subject: "bpf: Add networking timestamping support to bpf_get/setsockopt()"
What: The new SK_BPF_CB_FLAGS and new SK_BPF_CB_TX_TIMESTAMPING are added to
bpf_get/setsockopt.
Why: The later patch will implement the BPF networking timestamping. The BPF
program will use bpf_setsockopt(SK_BPF_CB_FLAGS, SK_BPF_CB_TX_TIMESTAMPING) to
enable the BPF networking timestamping on a socket.
next prev parent reply other threads:[~2025-02-11 1:03 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-08 10:32 [PATCH bpf-next v9 00/12] net-timestamp: bpf extension to equip applications transparently Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 01/12] bpf: add support for bpf_setsockopt() Jason Xing
2025-02-11 1:02 ` Martin KaFai Lau [this message]
2025-02-11 2:24 ` Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 02/12] bpf: prepare for timestamping callbacks use Jason Xing
2025-02-11 1:31 ` Martin KaFai Lau
2025-02-11 2:25 ` Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 03/12] bpf: stop unsafely accessing TCP fields in bpf callbacks Jason Xing
2025-02-11 6:34 ` Martin KaFai Lau
2025-02-11 8:08 ` Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 04/12] bpf: stop calling some sock_op BPF CALLs in new timestamping callbacks Jason Xing
2025-02-11 6:55 ` Martin KaFai Lau
2025-02-11 8:24 ` Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 05/12] net-timestamp: prepare for isolating two modes of SO_TIMESTAMPING Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 06/12] bpf: support SCM_TSTAMP_SCHED " Jason Xing
2025-02-11 7:12 ` Martin KaFai Lau
2025-02-11 7:31 ` Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 07/12] bpf: support sw SCM_TSTAMP_SND " Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 08/12] bpf: support hw " Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 09/12] bpf: support SCM_TSTAMP_ACK " Jason Xing
2025-02-08 17:54 ` Willem de Bruijn
2025-02-08 23:27 ` Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 10/12] bpf: add a new callback in tcp_tx_timestamp() Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 11/12] bpf: support selective sampling for bpf timestamping Jason Xing
2025-02-11 7:41 ` Martin KaFai Lau
2025-02-11 7:48 ` Jason Xing
2025-02-08 10:32 ` [PATCH bpf-next v9 12/12] selftests/bpf: add simple bpf tests in the tx path for timestamping feature Jason Xing
2025-02-11 8:05 ` Martin KaFai Lau
2025-02-11 11:37 ` Jason Xing
2025-02-10 23:37 ` [PATCH bpf-next v9 00/12] net-timestamp: bpf extension to equip applications transparently Martin KaFai Lau
2025-02-11 0:03 ` Jason Xing
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=85d1b9e5-e1c4-452d-af50-e5c3784372ce@linux.dev \
--to=martin.lau@linux.dev \
--cc=andrii@kernel.org \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=dsahern@kernel.org \
--cc=eddyz87@gmail.com \
--cc=edumazet@google.com \
--cc=haoluo@google.com \
--cc=horms@kernel.org \
--cc=john.fastabend@gmail.com \
--cc=jolsa@kernel.org \
--cc=kerneljasonxing@gmail.com \
--cc=kpsingh@kernel.org \
--cc=kuba@kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=sdf@fomichev.me \
--cc=song@kernel.org \
--cc=willemb@google.com \
--cc=willemdebruijn.kernel@gmail.com \
--cc=yonghong.song@linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).