Re: [PATCH v20 net-next 0/6] DUALPI2 patch

On 6/21/25 9:33 PM, chia-yu.chang@nokia-bell-labs.com wrote:

From: Chia-Yu Chang chia-yu.chang@nokia-bell-labs.com

Please find the DualPI2 patch v20.

This patch serise adds DualPI Improved with a Square (DualPI2) with following features:

• Supports congestion controls that comply with the Prague requirements in RFC9331 (e.g. TCP-Prague)
• Coupled dual-queue that separates the L4S traffic in a low latency queue (L-queue), without harming remaining traffic that is scheduled in classic queue (C-queue) due to congestion-coupling using PI2 as defined in RFC9332
• Configurable overload strategies
• Use of sojourn time to reliably estimate queue delay
• Supports ECN L4S-identifier (IP.ECN==0b*1) to classify traffic into respective queues

For more details of DualPI2, please refer IETF RFC9332 (https://datatracker.ietf.org/doc/html/rfc9332).

I don't have additional relevant comments, but I would appreciate any additional review from net_sched maintainers.

Thanks,

Paolo