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Date:   Mon, 9 Mar 2020 15:19:57 -0700
From:   Jakub Kicinski <>
To:     Leslie Monis <>
Cc:     Linux NetDev <>,
        David Miller <>,
        "Mohit P . Tahiliani" <>,
        Gautam Ramakrishnan <>,
        Eric Dumazet <>
Subject: Re: [PATCH net-next] net: sched: pie: change tc_pie_xstats->prob

On Tue, 10 Mar 2020 00:40:33 +0530 Leslie Monis wrote:
> Commit 105e808c1da2 ("pie: remove pie_vars->accu_prob_overflows")
> changes the scale of probability values in PIE from (2^64 - 1) to
> (2^56 - 1). This affects the precision of tc_pie_xstats->prob in
> user space.
> This patch ensures user space is unaffected.
> Suggested-by: Eric Dumazet <>
> Signed-off-by: Leslie Monis <>

Thanks, I was looking out for user space changes during review but it
was too hard to catch this until the iproute2 patch surfaced :(

I'd be good to post the user space changes along the kernel side.
iproute2 maintainers just wait for the kernel part to land in that case.

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