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Date:   Fri, 28 Oct 2022 10:20:17 +0000
To:     Mubashir Adnan Qureshi <>
Subject: Re: [PATCH net-next 0/5] Add PLB functionality to TCP


This series was applied to netdev/net-next.git (master)
by David S. Miller <>:

On Wed, 26 Oct 2022 13:51:10 +0000 you wrote:
> From: Mubashir Adnan Qureshi <>
> 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:
> [...]

Here is the summary with links:
  - [net-next,1/5] tcp: add sysctls for TCP PLB parameters
  - [net-next,2/5] tcp: add PLB functionality for TCP
  - [net-next,3/5] tcp: add support for PLB in DCTCP
  - [net-next,4/5] tcp: add u32 counter in tcp_sock and an SNMP counter for PLB
  - [net-next,5/5] tcp: add rcv_wnd and plb_rehash to TCP_INFO

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