Subject: Re: m_copy - doesn't copy if M_EXT is set.
To: Darren Reed <firstname.lastname@example.org>
From: None <email@example.com>
Date: 10/04/1999 00:06:27
>It would appear that the behaviour of m_copy()/m_copym() is changed,
>depending on whether or not M_EXT is set. If M_EXT is set, then the
I believe the above is the normal behavior, and this has been there
for a very long time. See TCP/IP Illustrated volume 2, section 2.9.
To handle, for example, IPsec ESP header (which requires total
modification of the packet), we reimplement mbuf chain copying,
without cluster sharing, in few places.