Re: [PATCH net-next v2 0/5] Add PLB functionality to TCP
From: Jakub Kicinski <kuba@kernel.org>
Date: 2022-10-03 23:42:30
On Fri, 30 Sep 2022 04:53:15 +0000 Mubashir Adnan Qureshi wrote:
This patch series adds PLB (Protective Load Balancing) to TCP and hooks it up to DCTCP. PLB is disabled by default and can be enabled using relevant sysctls and support from underlying CC. PLB (Protective Load Balancing) is a host based mechanism for load balancing across switch links. It leverages congestion signals(e.g. ECN) from transport layer to randomly change the path of the connection experiencing congestion. PLB changes the path of the connection by changing the outgoing IPv6 flow label for IPv6 connections (implemented in Linux by calling sk_rethink_txhash()). Because of this implementation mechanism, PLB can currently only work for IPv6 traffic. For more information, see the SIGCOMM 2022 paper: https://doi.org/10.1145/3544216.3544226
A bit of an unfortunate timing. Linus just released 6.0 and we went into feature freeze AKA merge window. Please repost in 2 weeks, after v6.1-rc1 has been tagged.