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
Cc: Olivier Tilmans <olivier.tilmans@nokia.com>
Subject: Re: [PATCH v6 net-next 05/14] tcp: ECT_1_NEGOTIATION and NEEDS_ACCECN identifiers
Date: Tue, 18 Nov 2025 13:30:17 +0100 [thread overview]
Message-ID: <715746f8-d1f0-485a-ab83-2f768722698f@redhat.com> (raw)
In-Reply-To: <20251114071345.10769-6-chia-yu.chang@nokia-bell-labs.com>
On 11/14/25 8:13 AM, chia-yu.chang@nokia-bell-labs.com wrote:
> From: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com>
>
> Two CA module flags are added in this patch related to AccECN negotiation.
> First, a new CA module flag (TCP_CONG_NEEDS_ACCECN) defines that the CA
> expects to negotiate AccECN functionality using the ECE, CWR and AE flags
> in the TCP header.
>
> Second, during ECN negotiation, ECT(0) in the IP header is used. This patch
> enables CA to control whether ECT(0) or ECT(1) should be used on a per-segment
> basis. A new flag (TCP_CONG_ECT_1_NEGOTIATION) defines the expected ECT value
> in the IP header by the CA when not-yet initialized for the connection.
>
> The detailed AccECN negotiaotn during the 3WHS can be found in the AccECN spec:
> https://tools.ietf.org/id/draft-ietf-tcpm-accurate-ecn-28.txt
>
> Co-developed-by: Olivier Tilmans <olivier.tilmans@nokia.com>
> Signed-off-by: Olivier Tilmans <olivier.tilmans@nokia.com>
> Signed-off-by: Ilpo Järvinen <ij@kernel.org>
> Signed-off-by: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
next prev parent reply other threads:[~2025-11-18 12:30 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-14 7:13 [PATCH v6 net-next 00/14] AccECN protocol case handling series chia-yu.chang
2025-11-14 7:13 ` [PATCH v6 net-next 01/14] tcp: try to avoid safer when ACKs are thinned chia-yu.chang
2025-11-14 7:13 ` [PATCH v6 net-next 02/14] gro: flushing when CWR is set negatively affects AccECN chia-yu.chang
2025-11-14 7:13 ` [PATCH v6 net-next 03/14] net: update commnets for SKB_GSO_TCP_ECN and SKB_GSO_TCP_ACCECN chia-yu.chang
2025-11-18 12:02 ` Paolo Abeni
2025-11-19 10:24 ` Chia-Yu Chang (Nokia)
2025-11-19 10:40 ` Paolo Abeni
2025-11-19 10:43 ` Paolo Abeni
2025-11-19 11:22 ` Chia-Yu Chang (Nokia)
2025-11-26 8:48 ` Chia-Yu Chang (Nokia)
2025-11-14 7:13 ` [PATCH v6 net-next 04/14] selftests/net: gro: add self-test for TCP CWR flag chia-yu.chang
2025-11-18 12:14 ` Paolo Abeni
2025-11-14 7:13 ` [PATCH v6 net-next 05/14] tcp: ECT_1_NEGOTIATION and NEEDS_ACCECN identifiers chia-yu.chang
2025-11-18 12:30 ` Paolo Abeni [this message]
2025-11-14 7:13 ` [PATCH v6 net-next 06/14] tcp: disable RFC3168 fallback identifier for CC modules chia-yu.chang
2025-11-14 7:13 ` [PATCH v6 net-next 07/14] tcp: accecn: handle unexpected AccECN negotiation feedback chia-yu.chang
2025-11-14 7:13 ` [PATCH v6 net-next 08/14] tcp: accecn: retransmit downgraded SYN in AccECN negotiation chia-yu.chang
2025-11-14 7:13 ` [PATCH v6 net-next 09/14] tcp: add TCP_SYNACK_RETRANS synack_type chia-yu.chang
2025-11-18 12:32 ` Paolo Abeni
2025-11-14 7:13 ` [PATCH v6 net-next 10/14] tcp: accecn: retransmit SYN/ACK without AccECN option or non-AccECN SYN/ACK chia-yu.chang
2025-11-18 13:58 ` Paolo Abeni
2025-11-19 10:32 ` Chia-Yu Chang (Nokia)
2025-11-14 7:13 ` [PATCH v6 net-next 11/14] tcp: accecn: unset ECT if receive or send ACE=0 in AccECN negotiaion chia-yu.chang
2025-11-14 7:13 ` [PATCH v6 net-next 12/14] tcp: accecn: fallback outgoing half link to non-AccECN chia-yu.chang
2025-11-14 7:13 ` [PATCH v6 net-next 13/14] tcp: accecn: detect loss ACK w/ AccECN option and add TCP_ACCECN_OPTION_PERSIST chia-yu.chang
2025-11-14 7:13 ` [PATCH v6 net-next 14/14] tcp: accecn: enable AccECN chia-yu.chang
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