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Date:      Fri, 02 Feb 2001 19:12:14 +0900
From:      Masachika ISHIZUKA <ishizuka@ish.org>
To:        freebsd-net@freebsd.org
Subject:   packet loss when 'ipfw pipe list' with dummynet and bridge
Message-ID:  <20010202191214B.ishizuka@onion.ish.org>

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  I use dummynet and bridge on FreeBSD 4.2-Stable to see traffic
statics on Celeron 466MHz with 256 mega bytes ram as follows.

ipfw pipe 1 config mask dst-ip 0xffffffff buckets 1024
ipfw pipe 2 config mask src-ip 0xffffffff buckets 1024
ipfw add pipe 1 all from any to any bridged via fxp0 in
ipfw add pipe 2 all from any to any bridged via fxp1 in

  It is collected about 10,000 addresses each pipes.
  When I typed 'ipfw pipe list', packet loss occur.
Packet loss occur only recent 4.2-Stable with splimp()
instead of splnet().  When I replaced splimp() of dummynet_get()
in ip_dummynet.c with slpnet(), packet loss did not occur,
but sometimes panic occur.
  Is there any way to stop packet loss.
  Sorry to my terrible English.

-- 
ishizuka@ish.org


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