netdev - Faster TCP keepalive

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Date:   Fri, 23 Jun 2017 15:58:17 -0400
From:   Stephen Suryaputra Lin <stephen.suryaputra.lin@...il.com>
To:     netdev@...r.kernel.org
Subject: Faster TCP keepalive

Greetings,

I'm writing this to probe if there has been thoughts or efforts in
allowing sub-second TCP keep alive interval? One application is for TCP
connections between IP hosts connected by an internal backplane where a
faster detection is a necessity and the increased traffic can be
accommodated.

Suggestions on other ways to quickly tearing down TCP connections to a
rebooted host in the application above are welcomed.

Thank you,

Stephen.