From owner-freebsd-hackers  Wed Aug 12 14:23:22 1998
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From: Emmanuel Duros <Emmanuel.Duros@sophia.inria.fr>
To: freebsd-hackers@FreeBSD.ORG
Subject: Allocating memory in a network device driver
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I am currently writing a network device driver and I need clarification
on how to allocate memory.

I have seen in many device drivers allocating memory in the following
way:

	u_char *buf;
	buf = malloc( BUFSIZ, M_DEVBUF, M_NOWAIT);

Do we get the same result with : ?

	u_char buf[BUFSIZ];

In fact I have not found much documentation on the malloc function used
in device driver. Can anyone point me to some ? I wonder what the
M_DEVBUF, M_NOWAIT,... parameters are exactly for.

Thanks a lot

Emmanuel Duros

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