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Thu, 06 Nov 2025 04:24:05 -0800 (PST) Received: from [192.168.88.32] ([212.105.155.83]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4775ce211d8sm109065745e9.11.2025.11.06.04.24.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 06 Nov 2025 04:24:05 -0800 (PST) Message-ID: <2caefd47-52d9-40be-8589-cd92917f1bcd@redhat.com> Date: Thu, 6 Nov 2025 13:24:03 +0100 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 net-next 14/14] tcp: accecn: enable AccECN 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 References: <20251030143435.13003-1-chia-yu.chang@nokia-bell-labs.com> <20251030143435.13003-15-chia-yu.chang@nokia-bell-labs.com> Content-Language: en-US From: Paolo Abeni In-Reply-To: <20251030143435.13003-15-chia-yu.chang@nokia-bell-labs.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 10/30/25 3:34 PM, chia-yu.chang@nokia-bell-labs.com wrote: > From: Chia-Yu Chang > > Enable Accurate ECN negotiation and request for incoming and > outgoing connection by setting sysctl_tcp_ecn: > > +==============+===========================================+ > | | Highest ECN variant (Accurate ECN, ECN, | > | tcp_ecn | or no ECN) to be negotiated & requested | > | +---------------------+---------------------+ > | | Incoming connection | Outgoing connection | > +==============+=====================+=====================+ > | 0 | No ECN | No ECN | > | 1 | ECN | ECN | > | 2 | ECN | No ECN | > +--------------+---------------------+---------------------+ > | 3 | Accurate ECN | Accurate ECN | > | 4 | Accurate ECN | ECN | > | 5 | Accurate ECN | No ECN | > +==============+=====================+=====================+ > > Refer Documentation/networking/ip-sysctl.rst for more details. > > Signed-off-by: Chia-Yu Chang Acked-by: Paolo Abeni