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Re: storage over IP (was Re: [PLEASE-TESTME] Zerocopy networking patch,

from [David S. Miller] [Permanent Link][Original]
To: dean-list-linux-kernel@xxxxxxxxxx
Subject: Re: storage over IP (was Re: [PLEASE-TESTME] Zerocopy networking patch, 2.4.0-1)
From: "David S. Miller" <davem@xxxxxxxxxx>
Date: Tue, 9 Jan 2001 19:09:59 -0800
Cc: mingo@xxxxxxx, riel@xxxxxxxxxxxxxxxx, hch@xxxxxxxxxx, netdev@xxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <Pine.LNX.4.30.0101091916210.10428-100000@twinlark.arctic.org> (message from dean gaudet on Tue, 9 Jan 2001 19:18:53 -0800 (PST))
References: <Pine.LNX.4.30.0101091916210.10428-100000@twinlark.arctic.org>
Sender: owner-netdev@xxxxxxxxxxx 
   Date: Tue, 9 Jan 2001 19:18:53 -0800 (PST)
   From: dean gaudet <dean-list-linux-kernel@xxxxxxxxxx>

   - NIC DMAs packet to memory
   - CPU reads headers from memory, figures out it's NFS
   - CPU copies data bytes from packet image in memory to pagecache

Yes, this is precisely what happens in the NFS client with
the zerocopy patches applied.

Later,
David S. Miller
davem@xxxxxxxxxx
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