netdev - [RFC] ipmr: About origin IP address of flow in multicast routing API

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Message-ID: <208282.77453.qm@web62507.mail.re1.yahoo.com>
Date:	Wed, 5 Jan 2011 04:59:07 -0800 (PST)
From:	François-Xavier Le Bail <fx.lebail@...oo.com>
To:	netdev@...r.kernel.org
Subject: [RFC] ipmr: About origin IP address of flow in multicast routing API

Hello,

Context: IGMP Proxying.

For using multicast routing API with setsockopt and MRT_ADD_MFC, we need to set the mfcc_origin in a struct mfcctl.

Is there a way to use a wildcard for mfcc_origin to say "any origin" IP address, by example 0.0.0.0 ?

Thus we could add a MFC with only the multicast group and the mfcc_parent, reading a SOCK_RAW/IPPROTO_IGMP socket, without the need to listen the multicast flow to find the origin IP.

Any thought ?

Francois-Xavier Le Bail

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