linux-kernel - 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: <1483710841.12677.1.camel@sipsolutions.net>
Date:   Fri, 06 Jan 2017 14:54:01 +0100
From:   Johannes Berg <johannes@...solutions.net>
To:     Felix Fietkau <nbd@....name>,
        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


> 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?

johannes