netdev - Re: [PATCH iproute2-next v2 1/2] tc: Look for blocks in qevents

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Message-ID: <20200716160704.GB23663@nanopsycho.orion>
Date:   Thu, 16 Jul 2020 18:07:04 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     Petr Machata <petrm@...lanox.com>
Cc:     netdev@...r.kernel.org,
        Stephen Hemminger <stephen@...workplumber.org>,
        David Ahern <dsahern@...il.com>, Jiri Pirko <jiri@...lanox.com>
Subject: Re: [PATCH iproute2-next v2 1/2] tc: Look for blocks in qevents

Thu, Jul 16, 2020 at 05:49:45PM CEST, petrm@...lanox.com wrote:
>When a list of filters at a given block is requested, tc first validates
>that the block exists before doing the filter query. Currently the
>validation routine checks ingress and egress blocks. But now that blocks
>can be bound to qevents as well, qevent blocks should be looked for as
>well.
>
>In order to support that, extend struct qdisc_util with a new callback,
>has_block. That should report whether, give the attributes in TCA_OPTIONS,
>a blocks with a given number is bound to a qevent. In
>tc_qdisc_block_exists_cb(), invoke that callback when set.
>
>Add a helper to the tc_qevent module that walks the list of qevents and
>looks for a given block. This is meant to be used by the individual qdiscs.
>
>Signed-off-by: Petr Machata <petrm@...lanox.com>

Reviewed-by: Jiri Pirko <jiri@...lanox.com>