netdev - Re: [PATCH net-next 00/11] Add drop monitor for offloaded data paths

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Date:   Sat, 13 Jul 2019 19:38:51 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     idosch@...sch.org
Cc:     nhorman@...driver.com, netdev@...r.kernel.org, jiri@...lanox.com,
        mlxsw@...lanox.com, dsahern@...il.com, roopa@...ulusnetworks.com,
        nikolay@...ulusnetworks.com, andy@...yhouse.net,
        pablo@...filter.org, jakub.kicinski@...ronome.com,
        pieter.jansenvanvuuren@...ronome.com, andrew@...n.ch,
        f.fainelli@...il.com, vivien.didelot@...il.com, idosch@...lanox.com
Subject: Re: [PATCH net-next 00/11] Add drop monitor for offloaded data
 paths

From: Ido Schimmel <idosch@...sch.org>
Date: Thu, 11 Jul 2019 15:39:09 +0300

> Before I start working on v2, I would like to get your feedback on the
> high level plan. Also adding Neil who is the maintainer of drop_monitor
> (and counterpart DropWatch tool [1]).
> 
> IIUC, the problem you point out is that users need to use different
> tools to monitor packet drops based on where these drops occur
> (SW/HW/XDP).
> 
> Therefore, my plan is to extend the existing drop_monitor netlink
> channel to also cover HW drops. I will add a new message type and a new
> multicast group for HW drops and encode in the message what is currently
> encoded in the devlink events.

Consolidating the reporting to merge with the drop monitor facilities
is definitely a step in the right direction.