From: Andrew Lunn <andrew@lunn.ch>
To: Vladimir Oltean <olteanv@gmail.com>
Cc: Jakub Kicinski <kuba@kernel.org>,
George McCollister <george.mccollister@gmail.com>,
Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
"David S . Miller" <davem@davemloft.net>,
netdev@vger.kernel.org,
"open list:OPEN FIRMWARE AND..." <devicetree@vger.kernel.org>
Subject: Re: [PATCH net-next v2 2/3] net: dsa: add Arrow SpeedChips XRS700x driver
Date: Sat, 28 Nov 2020 01:39:12 +0100 [thread overview]
Message-ID: <20201128003912.GA2191767@lunn.ch> (raw)
In-Reply-To: <20201128000234.hwd5zo2d4giiikjc@skbuf>
> This means, as far as I understand, 2 things:
> 1. call_netdevice_notifiers_info doesn't help, since our problem is the
> same
> 2. I think that holding the RTNL should also be a valid way to iterate
> through the net devices in the current netns, and doing just that
> could be the simplest way out. It certainly worked when I tried it.
> But those could also be famous last words...
DSA makes the assumption it can block in a notifier change event. For
example, NETDEV_CHANGEUPPER calls dsa_slave_changeupper() which calls
into the driver. We have not seen any warnings about sleeping while
atomic. So maybe see how NETDEV_CHANGEUPPER is issued.
Andrew
next prev parent reply other threads:[~2020-11-28 1:09 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-25 19:37 [PATCH net-next v2 0/3] Arrow SpeedChips XRS700x DSA Driver George McCollister
2020-11-25 19:37 ` [PATCH net-next v2 1/3] dsa: add support for Arrow XRS700x tag trailer George McCollister
2020-11-25 20:34 ` Andrew Lunn
2020-11-26 13:50 ` Vladimir Oltean
2020-11-26 14:01 ` Andrew Lunn
2020-11-26 14:28 ` Vladimir Oltean
2020-11-25 20:34 ` Andrew Lunn
2020-11-26 1:31 ` Florian Fainelli
2020-11-25 19:37 ` [PATCH net-next v2 2/3] net: dsa: add Arrow SpeedChips XRS700x driver George McCollister
2020-11-26 1:42 ` Jakub Kicinski
2020-11-26 2:25 ` George McCollister
2020-11-26 13:24 ` Vladimir Oltean
2020-11-26 17:56 ` Vladimir Oltean
2020-11-26 19:07 ` George McCollister
2020-11-26 22:05 ` Vladimir Oltean
2020-11-27 18:35 ` Jakub Kicinski
[not found] ` <CAFSKS=MAdnR2jzmkQfTnSQZ7GY5x5KJE=oeqPCQdbZdf5n=4ZQ@mail.gmail.com>
2020-11-27 19:50 ` Vladimir Oltean
2020-11-27 20:58 ` George McCollister
2020-11-27 21:37 ` Jakub Kicinski
2020-11-27 22:42 ` Vladimir Oltean
2020-11-27 23:21 ` Vladimir Oltean
2020-11-27 23:51 ` Jakub Kicinski
2020-11-27 23:30 ` Andrew Lunn
2020-11-27 23:39 ` Vladimir Oltean
2020-11-27 23:56 ` Jakub Kicinski
2020-11-28 1:45 ` Vladimir Oltean
2020-11-28 0:02 ` Vladimir Oltean
2020-11-28 0:39 ` Andrew Lunn [this message]
2020-11-28 1:41 ` Vladimir Oltean
2020-11-28 2:15 ` Jakub Kicinski
2020-11-30 16:52 ` George McCollister
2020-11-30 23:50 ` Vladimir Oltean
2020-11-30 23:58 ` George McCollister
2020-12-01 0:19 ` Vladimir Oltean
2020-11-27 20:47 ` Andrew Lunn
2020-11-27 21:13 ` Jakub Kicinski
2020-11-27 21:23 ` Vladimir Oltean
2020-11-27 21:36 ` Andrew Lunn
2020-12-02 0:28 ` Vladimir Oltean
2020-12-02 0:54 ` Jakub Kicinski
2020-11-27 22:03 ` Jakub Kicinski
2020-11-27 21:32 ` Andrew Lunn
2020-11-27 22:14 ` Jakub Kicinski
2020-11-27 22:46 ` Andrew Lunn
2020-11-25 19:37 ` [PATCH net-next v2 3/3] dt-bindings: net: dsa: add bindings for xrs700x switches George McCollister
2020-11-26 1:30 ` Florian Fainelli
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