netdev - Re: [PATCH iproute2-next] tc: Add support for ce_threshold_value/mask in fq

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Message-ID: <765eb3d8-7dfa-2b28-e276-fac88453bc72@gmail.com>
Date:   Fri, 3 Dec 2021 10:20:04 -0700
From:   David Ahern <dsahern@...il.com>
To:     Toke Høiland-Jørgensen <toke@...hat.com>,
        netdev@...r.kernel.org
Subject: Re: [PATCH iproute2-next] tc: Add support for ce_threshold_value/mask
 in fq_codel

On 11/23/21 1:13 PM, Toke Høiland-Jørgensen wrote:
> Commit dfcb63ce1de6 ("fq_codel: generalise ce_threshold marking for subset
> of traffic") added support in fq_codel for setting a value and mask that
> will be applied to the diffserv/ECN byte to turn on the ce_threshold
> feature for a subset of traffic.
> 
> This adds support to tc for setting these values. The parameter is
> called ce_threshold_selector and takes a value followed by a
> slash-separated mask. Some examples:
> 
>  # apply ce_threshold to ECT(1) traffic
>  tc qdisc replace dev eth0 root fq_codel ce_threshold 1ms ce_threshold_selector 0x1/0x3
> 
>  # apply ce_threshold to ECN-capable traffic marked as diffserv AF22
>  tc qdisc replace dev eth0 root fq_codel ce_threshold 1ms ce_threshold_selector 0x50/0xfc
> 
> Signed-off-by: Toke Høiland-Jørgensen <toke@...hat.com>
> ---
>  tc/q_fq_codel.c | 40 ++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 40 insertions(+)

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