netdev - Re: [PATCH net-next] bridge: multicast to unicast

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: <21c1c361-eef0-aa53-ecd5-b5154c51462d@nbd.name>
Date:   Fri, 6 Jan 2017 14:54:55 +0100
From:   Felix Fietkau <nbd@....name>
To:     Johannes Berg <johannes@...solutions.net>,
        Linus Lüssing <linus.luessing@...3.blue>,
        netdev@...r.kernel.org
Cc:     "David S . Miller" <davem@...emloft.net>,
        Stephen Hemminger <stephen@...workplumber.org>,
        bridge@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        linux-wireless@...r.kernel.org,
        Michael Braun <michael-dev@...i-braun.de>
Subject: Re: [PATCH net-next] bridge: multicast to unicast

On 2017-01-06 14:54, Johannes Berg wrote:
> 
>> The bridge layer can use IGMP snooping to ensure that the multicast
>> stream is only transmitted to clients that are actually a member of
>> the group. Can the mac80211 feature do the same?
> 
> No, it'll convert the packet for all clients that are behind that
> netdev. But that's an argument for dropping the mac80211 feature, which
> hasn't been merged upstream yet, no?
Right.

- Felix