Re: [PATCH v12 net-next 14/15] tcp: accecn: AccECN option ceb/cep and ACE field multi-wrap heuristics

On 7/4/25 10:53 AM, chia-yu.chang@nokia-bell-labs.com wrote:

From: Ilpo Järvinen ij@kernel.org

The AccECN option ceb/cep heuristic algorithm is from AccECN spec Appendix A.2.2 to mitigate against false ACE field overflows. Armed with ceb delta from option, delivered bytes, and delivered packets it is possible to estimate how many times ACE field wrapped.

This calculation is necessary only if more than one wrap is possible. Without SACK, delivered bytes and packets are not always trustworthy in which case TCP falls back to the simpler no-or-all wraps ceb algorithm.

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