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Date: Wed, 18 Aug 2004 11:44:25 +0300 (EEST)
From: Giorgos Keramidas <keramida@ceid.upatras.gr>
To: Dennis George <easyeinfo@yahoo.com>
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cc: freebsd-hackers@FreeBSD.org
Subject: Re: Zero copy Socket
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On 2004-08-18 01:30, Dennis George wrote:

> Hi all,
>
> Is there any limitations in using zero copy socket.... I mean... do
> the sender has to follow any specific protocol (like the packet
> payload should be page alligned or so.) ???

Yes.

See the zero_copy(9) manpage.  It includes a lot of details regarding
zero-copy sockets.