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Date:      Fri, 25 Jun 1999 15:14:11 -0700 (PDT)
From:      Doug White <dwhite@resnet.uoregon.edu>
To:        Charudatta Brahme <charooo@trishul.icil.co.in>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Network Driver Programming
Message-ID:  <Pine.BSF.4.10.9906251513230.14671-100000@resnet.uoregon.edu>
In-Reply-To: <3770BE7A.3DD26D3A@trishul.icil.co.in>

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On Wed, 23 Jun 1999, Charudatta Brahme wrote:

> > Set promiscuous mode on the appropriate interface.  It sounds like you
> > really want to use bpf.
> >
> 
> Did set that. What's puzzling is - where is the input queue? Do I have to
> schedule an isr
> and then recv data in the isr?
> I don't know how bpf works - any idea where I can lay my hands on ANY sort of
> documentation?.

man bpf for starters, then prod the tcpdump source.

> > Could you honestly host 1024 sites on one Ethernet without running out of
> > network bandwidth first?  Or bottlenecking on all the I/O?
> 
> When I talk of hosting - it is specifically for some (stress) testing
> purposes - and that too only ICMP echo replies.

IP aliases don't necessarily ping, we've discovered.

Doug White                               
Internet:  dwhite@resnet.uoregon.edu    | FreeBSD: The Power to Serve
http://gladstone.uoregon.edu/~dwhite    | www.freebsd.org



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