linux-kernel - Re: [PATCH net-next 4/5] net: mscc: ocelot: make entry_type a member of struct ocelot

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Date:   Thu, 29 Oct 2020 11:06:47 +0000
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Florian Fainelli <f.fainelli@...il.com>
CC:     Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next 4/5] net: mscc: ocelot: make entry_type a member
 of struct ocelot_multicast

On Wed, Oct 28, 2020 at 07:37:09PM -0700, Florian Fainelli wrote:
> If the MDB object is programmed with SWITCHDEV_OBJ_ID_HOST_MDB then you
> would need this gfp_t to be GFP_ATOMIC per
> net/bridge/br_mdb.c::__br_mdb_notify, if this is a regular
> SWITCHDEV_OBJ_ID_MDB then GFP_KERNEL appears to be fine.

Good point, I think I would need to do something more radical anyway, as
programming anything into the MAC table calls:
ocelot_mact_learn
-> ocelot_mact_wait_for_completion
   -> readx_poll_timeout
I'm thinking to move all of this into a workqueue.