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From: Jakub Kicinski <kuba@kernel.org>
To: Leon Romanovsky <leon@kernel.org>
Cc: "David S . Miller" <davem@davemloft.net>,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH net-next v1] netdevsim: Forbid devlink reload when adding or deleting ports
Date: Thu, 5 Aug 2021 08:27:56 -0700	[thread overview]
Message-ID: <20210805082756.0b4e61d7@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> (raw)
In-Reply-To: <YQv2v5cTqLvoPc4n@unreal>

On Thu, 5 Aug 2021 17:33:35 +0300 Leon Romanovsky wrote:
> On Thu, Aug 05, 2021 at 07:23:42AM -0700, Jakub Kicinski wrote:
> > > This is what devlink_reload_disable() returns, so I kept same error.
> > > It is not important at all.
> > > 
> > > What about the following change on top of this patch?  
> > 
> > LGTM, the only question is whether we should leave in_reload true 
> > if nsim_dev->fail_reload is set.  
> 
> I don't think so, it will block add/delete ports.

As it should, given add/delete ports takes the port_list_lock which is
destroyed by down but not (due to the forced failure) re-initialized by
up.

If we want to handle adding ports while down we can just bump port
count and return, although I don't think there's a practical need
to support that.

  reply	other threads:[~2021-08-05 15:28 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-05 11:02 [PATCH net-next] " Leon Romanovsky
2021-08-05 11:05 ` [PATCH net-next v1] " Leon Romanovsky
2021-08-05 12:40 ` [PATCH net-next] " patchwork-bot+netdevbpf
2021-08-05 13:15 ` [PATCH net-next v1] " Jakub Kicinski
2021-08-05 13:51   ` Leon Romanovsky
2021-08-05 14:23     ` Jakub Kicinski
2021-08-05 14:33       ` Leon Romanovsky
2021-08-05 15:27         ` Jakub Kicinski [this message]
2021-08-05 17:35           ` Leon Romanovsky
2021-08-05 18:02             ` Leon Romanovsky
2021-08-05 19:12               ` Jakub Kicinski
2021-08-06 11:19                 ` Leon Romanovsky

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