netdev - tcp_probe tracepoint only when cwnd changes

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Date:   Thu, 8 Feb 2018 22:13:58 -0500
From:   "Md. Islam" <mislam4@...t.edu>
To:     netdev@...r.kernel.org, Masami Hiramatsu <mhiramat@...nel.org>,
        stephen@...workplumber.org, mathieu.desnoyers@...ymtl.ca
Subject: tcp_probe tracepoint only when cwnd changes

Hi

I'm using tcp_probe tracepoint as [1]. It takes a snapshot each time
tcp_rcv_established() is called. However I need to take a snapshot
only when congestion window changes. Old tcp_probe had full=0 option
to achieve this. Is there a way to achieve this using tcp_probe
tracepoint?

Many thanks
Tamim

1. https://lkml.org/lkml/2017/12/18/126