netdev - Re: [PATCH net] bridge: do not add port to router list when receives query with source 0.0.0.0

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: <CAJieiUhrOjMiy3zwURD4A4t9K7P4AWPnK5-Ua7E9ZUHGW7Etbg@mail.gmail.com>
Date:   Fri, 26 Oct 2018 09:27:34 -0700
From:   Roopa Prabhu <roopa@...ulusnetworks.com>
To:     Hangbin Liu <liuhangbin@...il.com>
Cc:     netdev <netdev@...r.kernel.org>,
        Nikolay Aleksandrov <nikolay@...ulusnetworks.com>,
        Jiri Pirko <jiri@...lanox.com>,
        Linus Lüssing <linus.luessing@...3.blue>,
        David Miller <davem@...emloft.net>
Subject: Re: [PATCH net] bridge: do not add port to router list when receives
 query with source 0.0.0.0

On Thu, Oct 25, 2018 at 7:29 PM Hangbin Liu <liuhangbin@...il.com> wrote:
>
> Based on RFC 4541, 2.1.1.  IGMP Forwarding Rules
>
>   The switch supporting IGMP snooping must maintain a list of
>   multicast routers and the ports on which they are attached.  This
>   list can be constructed in any combination of the following ways:
>
>   a) This list should be built by the snooping switch sending
>      Multicast Router Solicitation messages as described in IGMP
>      Multicast Router Discovery [MRDISC].  It may also snoop
>      Multicast Router Advertisement messages sent by and to other
>      nodes.
>
>   b) The arrival port for IGMP Queries (sent by multicast routers)
>      where the source address is not 0.0.0.0.
>
> We should not add the port to router list when receives query with source
> 0.0.0.0.
>
> Reported-by: Ying Xu <yinxu@...hat.com>
> Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
> ---

Acked-by: Roopa Prabhu <roopa@...ulusnetworks.com>