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Date:	Wed, 9 Apr 2014 10:10:16 +0000
From:	David Laight <David.Laight@...LAB.COM>
To:	'Herbert Xu' <>,
	Stephen Hemminger <>
CC:	"David S. Miller" <>,
	"" <>
Subject: RE: [PATCH 2/2] macvlan: Move broadcasts into a work queue

From: Herbert Xu
> This patch picks the second option and moves all broadcast handling
> bar the trivial case of packets going to a single interface into
> a work queue.  Obviously there also needs to be a limit on how
> many broadcast packets we postpone in this way.  I've arbitrarily
> chosen tx_queue_len of the master device as the limit (act_mirred
> also happens to use this parameter in a similar way).
> In order to ensure we don't exceed the backlog queue we will use
> netif_rx_ni instead of netif_rx for broadcast packets.

Should you limit the number of broadcasts queued for transmit
on each interface as well as the number of postponed broadcasts.

It probably isn't a good idea to completely fill an interface's
transmit queue with broadcasts.


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