netdev - Re: [PATCH net-next 1/4] net: dsa: allow drivers to request promiscuous mode on master

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]

Date:   Mon, 11 May 2020 16:19:20 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Vladimir Oltean <olteanv@...il.com>, andrew@...n.ch,
        vivien.didelot@...il.com
Cc:     davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 1/4] net: dsa: allow drivers to request
 promiscuous mode on master



On 5/11/2020 1:20 PM, Vladimir Oltean wrote:
> From: Vladimir Oltean <vladimir.oltean@....com>
> 
> Currently DSA assumes that taggers don't mess with the destination MAC
> address of the frames on RX. That is not always the case. Some DSA
> headers are placed before the Ethernet header (ocelot), and others
> simply mangle random bytes from the destination MAC address (sja1105
> with its incl_srcpt option).
> 
> Currently the DSA master goes to promiscuous mode automatically when the
> slave devices go too (such as when enslaved to a bridge), but in
> standalone mode this is a problem that needs to be dealt with.
> 
> So give drivers the possibility to signal that their tagging protocol
> will get randomly dropped otherwise, and let DSA deal with fixing that.
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>

Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian