From: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
To: Martin KaFai Lau <martin.lau@linux.dev>,
Willem de Bruijn <willemdebruijn.kernel@gmail.com>,
Jason Xing <kerneljasonxing@gmail.com>
Cc: willemb@google.com, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org, pabeni@redhat.com, dsahern@kernel.org,
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, shuah@kernel.org,
ykolal@fb.com, bpf@vger.kernel.org, netdev@vger.kernel.org,
Jason Xing <kernelxing@tencent.com>
Subject: Re: [PATCH net-next v3 02/14] net-timestamp: allow two features to work parallelly
Date: Tue, 05 Nov 2024 09:29:51 -0500 [thread overview]
Message-ID: <672a2bdff1896_791352942b@willemb.c.googlers.com.notmuch> (raw)
In-Reply-To: <1c8ebc16-f8e7-4a98-9518-865db3952f8f@linux.dev>
Martin KaFai Lau wrote:
> On 11/1/24 6:32 AM, Willem de Bruijn wrote:
> >> In udp/raw/..., I don't know how likely is the user space having "cork->tx_flags
> >> & SKBTX_ANY_TSTAMP" set but has neither "READ_ONCE(sk->sk_tsflags) &
> >> SOF_TIMESTAMPING_OPT_ID" nor "cork->flags & IPCORK_TS_OPT_ID" set.
> > This is not something to rely on. OPT_ID was added relatively recently.
> > Older applications, or any that just use the most straightforward API,
> > will not set this.
>
> Good point that the OPT_ID per cmsg is very new.
>
> The datagram support on SOF_TIMESTAMPING_OPT_ID in sk->sk_tsflags had
> been there for quite some time now. Is it a safe assumption that
> most applications doing udp tx timestamping should have
> the SOF_TIMESTAMPING_OPT_ID set to be useful?
I don't think so.
The very first open source code I happen to look at, github.com/ptpd,
already sets SO_TIMESTAMPING without OPT_ID.
next prev parent reply other threads:[~2024-11-05 14:29 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-28 11:05 [PATCH net-next v3 00/14] net-timestamp: bpf extension to equip applications transparently Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 01/14] net-timestamp: reorganize in skb_tstamp_tx_output() Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 02/14] net-timestamp: allow two features to work parallelly Jason Xing
2024-10-29 23:00 ` Martin KaFai Lau
2024-10-30 1:23 ` Jason Xing
2024-10-30 1:45 ` Willem de Bruijn
2024-10-30 2:32 ` Jason Xing
2024-10-30 2:47 ` Willem de Bruijn
2024-10-30 3:04 ` Jason Xing
2024-10-30 5:37 ` Martin KaFai Lau
2024-10-30 6:42 ` Jason Xing
2024-10-30 17:15 ` Willem de Bruijn
2024-10-30 23:54 ` Jason Xing
2024-10-31 0:13 ` Jason Xing
2024-10-31 6:27 ` Martin KaFai Lau
2024-10-31 7:04 ` Jason Xing
2024-10-31 12:30 ` Willem de Bruijn
2024-10-31 13:50 ` Jason Xing
2024-10-31 23:26 ` Martin KaFai Lau
2024-11-01 7:47 ` Jason Xing
2024-11-05 1:50 ` Martin KaFai Lau
2024-11-05 3:13 ` Jason Xing
2024-11-01 13:32 ` Willem de Bruijn
2024-11-01 16:08 ` Jason Xing
2024-11-01 16:39 ` Willem de Bruijn
2024-11-05 2:09 ` Martin KaFai Lau
2024-11-05 6:22 ` Jason Xing
2024-11-05 19:22 ` Martin KaFai Lau
2024-11-06 0:17 ` Jason Xing
2024-11-06 1:09 ` Martin KaFai Lau
2024-11-06 2:51 ` Jason Xing
2024-11-07 1:19 ` Martin KaFai Lau
2024-11-07 3:31 ` Jason Xing
2024-11-07 19:05 ` Martin KaFai Lau
2024-11-06 1:11 ` Willem de Bruijn
2024-11-06 2:37 ` Jason Xing
2024-11-05 14:29 ` Willem de Bruijn [this message]
2024-11-02 13:43 ` Simon Horman
2024-11-03 0:42 ` Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 03/14] net-timestamp: open gate for bpf_setsockopt/_getsockopt Jason Xing
2024-10-29 0:59 ` Willem de Bruijn
2024-10-29 1:18 ` Jason Xing
2024-10-30 0:32 ` Martin KaFai Lau
2024-10-30 1:15 ` Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 04/14] net-timestamp: introduce TS_SCHED_OPT_CB to generate dev xmit timestamp Jason Xing
2024-10-29 0:23 ` kernel test robot
2024-10-29 1:02 ` Willem de Bruijn
2024-10-29 1:30 ` Jason Xing
2024-10-29 1:04 ` kernel test robot
2024-10-28 11:05 ` [PATCH net-next v3 05/14] net-timestamp: introduce TS_SW_OPT_CB to generate driver timestamp Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 06/14] net-timestamp: introduce TS_ACK_OPT_CB to generate tcp acked timestamp Jason Xing
2024-10-29 1:03 ` Willem de Bruijn
2024-10-29 1:19 ` Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 07/14] net-timestamp: add a new triggered point to set sk_tsflags_bpf in UDP layer Jason Xing
2024-10-29 1:07 ` Willem de Bruijn
2024-10-29 1:23 ` Jason Xing
2024-10-29 1:33 ` Willem de Bruijn
2024-10-29 3:12 ` Jason Xing
2024-10-29 15:04 ` Willem de Bruijn
2024-10-29 15:44 ` Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 08/14] net-timestamp: make bpf for tx timestamp work Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 09/14] net-timestamp: add a common helper to set tskey Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 10/14] net-timestamp: add basic support with tskey offset Jason Xing
2024-10-29 1:24 ` Willem de Bruijn
2024-10-29 2:41 ` Jason Xing
2024-10-29 15:03 ` Willem de Bruijn
2024-10-29 15:50 ` Jason Xing
2024-10-29 19:45 ` Willem de Bruijn
2024-10-30 3:27 ` Jason Xing
2024-10-30 5:42 ` Martin KaFai Lau
2024-10-30 6:50 ` Jason Xing
2024-10-31 1:17 ` Martin KaFai Lau
2024-10-31 2:41 ` Jason Xing
2024-10-31 3:27 ` Jason Xing
2024-10-31 5:52 ` Martin KaFai Lau
2024-10-31 6:16 ` Jason Xing
2024-10-31 23:50 ` Martin KaFai Lau
2024-11-01 6:33 ` Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 11/14] net-timestamp: support OPT_ID for TCP proto Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 12/14] net-timestamp: add OPT_ID for UDP proto Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 13/14] net-timestamp: use static key to control bpf extension Jason Xing
2024-10-28 11:05 ` [PATCH net-next v3 14/14] bpf: add simple bpf tests in the tx path for so_timstamping feature Jason Xing
2024-10-29 1:26 ` Willem de Bruijn
2024-10-29 1:33 ` Jason Xing
2024-10-29 1:40 ` Willem de Bruijn
2024-10-29 3:13 ` Jason Xing
2024-10-30 5:57 ` Martin KaFai Lau
2024-10-30 6:54 ` Jason Xing
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