netdev - Re: [PATCH] macvlan: Support interface operstate properly

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <570579AA.6050400@cumulusnetworks.com>
Date:	Wed, 6 Apr 2016 23:03:38 +0200
From:	Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
To:	Debabrata Banerjee <dbanerje@...mai.com>,
	Patrick McHardy <kaber@...sh.net>, netdev@...r.kernel.org
Subject: Re: [PATCH] macvlan: Support interface operstate properly

On 04/06/2016 10:30 PM, Debabrata Banerjee wrote:
> Set appropriate macvlan interface status based on lower device and our
> status. Can be up, down, or lowerlayerdown.
> 
> Signed-off-by: Debabrata Banerjee <dbanerje@...mai.com>
> 

May I ask what is exactly that you're fixing here ? I recently had to make macvlan's
operstates more accurate and I haven't experienced any wrong behaviour since commit
de7d244d0a35 ("macvlan: make operstate and carrier more accurate").
Also it's the linkwatch's job to take care for the proper operstate, we can use
netif_stacked_transfer_operstate to help it, but I don't think directly setting
operstate is a good idea.

One more thing - you cannot use netdev_state_change() under the write_lock as it
may sleep.