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Re: Must dev->set_multicast_list() complete before returning?

To: Rask Ingemann Lambertsen <rask@xxxxxxxxxx>
Subject: Re: Must dev->set_multicast_list() complete before returning?
From: Donald Becker <becker@xxxxxxxxx>
Date: Tue, 1 Apr 2003 22:50:07 -0500 (EST)
Cc: linux-net@xxxxxxxxxxxxxxx, <netdev@xxxxxxxxxxx>
In-reply-to: <3e89cbe235cd78.41777977@not right>
Sender: netdev-bounce@xxxxxxxxxxx
On Tue, 1 Apr 2003, Rask Ingemann Lambertsen wrote:

> Must dev->set_multicast_list() complete the configuration of a network
> device before returning? 

The promiscuous setting must complete before return, but there are
several drivers where the updated multicast filter does not immediately
take effect.

I have not seen hardware where setting promiscuous mode is a queued
command.  If you have such hardware, you may have to do some extra
software filtering and accept missing some packets during transitions.

-- 
Donald Becker                           becker@xxxxxxxxx
Scyld Computing Corporation             http://www.scyld.com
410 Severn Ave. Suite 210               Scyld Beowulf cluster system
Annapolis MD 21403                      410-990-9993


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