From: Paolo Abeni <pabeni@redhat.com>
To: chia-yu.chang@nokia-bell-labs.com, edumazet@google.com,
parav@nvidia.com, linux-doc@vger.kernel.org, corbet@lwn.net,
horms@kernel.org, dsahern@kernel.org, kuniyu@google.com,
bpf@vger.kernel.org, netdev@vger.kernel.org, dave.taht@gmail.com,
jhs@mojatatu.com, kuba@kernel.org, stephen@networkplumber.org,
xiyou.wangcong@gmail.com, jiri@resnulli.us, davem@davemloft.net,
andrew+netdev@lunn.ch, donald.hunter@gmail.com, ast@fiberby.net,
liuhangbin@gmail.com, shuah@kernel.org,
linux-kselftest@vger.kernel.org, ij@kernel.org,
ncardwell@google.com, koen.de_schepper@nokia-bell-labs.com,
g.white@cablelabs.com, ingemar.s.johansson@ericsson.com,
mirja.kuehlewind@ericsson.com, cheshire@apple.com,
rs.ietf@gmx.at, Jason_Livingood@comcast.com,
vidhi_goel@apple.com
Subject: Re: [PATCH v5 net-next 09/14] tcp: move increment of num_retrans
Date: Thu, 6 Nov 2025 12:56:23 +0100 [thread overview]
Message-ID: <4eef8fe1-b2b8-47c8-a21a-bcb4b75c3a0e@redhat.com> (raw)
In-Reply-To: <20251030143435.13003-10-chia-yu.chang@nokia-bell-labs.com>
On 10/30/25 3:34 PM, chia-yu.chang@nokia-bell-labs.com wrote:
> From: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com>
>
> Before this patch, num_retrans = 0 for the first SYN/ACK and the first
> retransmitted SYN/ACK; however, an upcoming change will need to
> differentiate between those two conditions.
AFAICS, send_synack is invoked with a NULL dst only on retransmissions.
Perhaps you could use that info instead? moving forward and backward a
counter is not so nice.
/P
next prev parent reply other threads:[~2025-11-06 11:56 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-30 14:34 [PATCH v5 net-next 00/14] AccECN protocol case handling series chia-yu.chang
2025-10-30 14:34 ` [PATCH v5 net-next 01/14] tcp: try to avoid safer when ACKs are thinned chia-yu.chang
2025-11-06 10:57 ` Paolo Abeni
2025-10-30 14:34 ` [PATCH v5 net-next 02/14] gro: flushing when CWR is set negatively affects AccECN chia-yu.chang
2025-11-06 11:01 ` Paolo Abeni
2025-11-06 11:08 ` Paolo Abeni
2025-10-30 14:34 ` [PATCH v5 net-next 03/14] net: update commnets for SKB_GSO_TCP_ECN and SKB_GSO_TCP_ACCECN chia-yu.chang
2025-11-06 11:06 ` Paolo Abeni
2025-11-06 11:26 ` Paolo Abeni
2025-11-11 11:02 ` Chia-Yu Chang (Nokia)
2025-10-30 14:34 ` [PATCH v5 net-next 04/14] selftests/net: gro: add self-test for TCP CWR flag chia-yu.chang
2025-10-30 14:34 ` [PATCH v5 net-next 05/14] tcp: L4S ECT(1) identifier and NEEDS_ACCECN for CC modules chia-yu.chang
2025-11-06 11:38 ` Paolo Abeni
2025-11-11 11:02 ` Chia-Yu Chang (Nokia)
2025-11-12 14:50 ` Paolo Abeni
2025-10-30 14:34 ` [PATCH v5 net-next 06/14] tcp: disable RFC3168 fallback identifier " chia-yu.chang
2025-11-06 11:42 ` Paolo Abeni
2025-10-30 14:34 ` [PATCH v5 net-next 07/14] tcp: accecn: handle unexpected AccECN negotiation feedback chia-yu.chang
2025-11-06 11:45 ` Paolo Abeni
2025-10-30 14:34 ` [PATCH v5 net-next 08/14] tcp: accecn: retransmit downgraded SYN in AccECN negotiation chia-yu.chang
2025-11-06 11:47 ` Paolo Abeni
2025-10-30 14:34 ` [PATCH v5 net-next 09/14] tcp: move increment of num_retrans chia-yu.chang
2025-11-06 11:56 ` Paolo Abeni [this message]
2025-11-06 12:03 ` Paolo Abeni
2025-10-30 14:34 ` [PATCH v5 net-next 10/14] tcp: accecn: retransmit SYN/ACK without AccECN option or non-AccECN SYN/ACK chia-yu.chang
2025-11-06 12:07 ` Paolo Abeni
2025-11-11 11:02 ` Chia-Yu Chang (Nokia)
2025-10-30 14:34 ` [PATCH v5 net-next 11/14] tcp: accecn: unset ECT if receive or send ACE=0 in AccECN negotiaion chia-yu.chang
2025-11-06 12:17 ` Paolo Abeni
2025-11-06 17:30 ` Chia-Yu Chang (Nokia)
2025-10-30 14:34 ` [PATCH v5 net-next 12/14] tcp: accecn: fallback outgoing half link to non-AccECN chia-yu.chang
2025-11-06 12:18 ` Paolo Abeni
2025-10-30 14:34 ` [PATCH v5 net-next 13/14] tcp: accecn: detect loss ACK w/ AccECN option and add TCP_ACCECN_OPTION_PERSIST chia-yu.chang
2025-11-06 12:21 ` Paolo Abeni
2025-10-30 14:34 ` [PATCH v5 net-next 14/14] tcp: accecn: enable AccECN chia-yu.chang
2025-11-06 12:24 ` Paolo Abeni
2025-10-31 0:56 ` [PATCH v5 net-next 00/14] AccECN protocol case handling series Jakub Kicinski
2025-10-31 7:32 ` Chia-Yu Chang (Nokia)
2025-10-31 14:06 ` Jakub Kicinski
-- strict thread matches above, loose matches on Subject: below --
2025-10-29 8:05 chia-yu.chang
2025-10-29 8:06 ` [PATCH v5 net-next 09/14] tcp: move increment of num_retrans chia-yu.chang
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