Re: data into mbufs
Re: data into mbufs
- Subject: Re: data into mbufs
- From: Josh Graessley <email@hidden>
- Date: Mon, 23 Jan 2006 15:36:31 -0800
I believe this function made it in fairly late in the game. The
documentation is derived from the comments in the headers. This
process is done manually. The documentation was not updated after
this function was included. This function is officially supported and
should continue to work until it is deprecated (if ever) according to
the document that covers the life cycle of kernel programming
interfaces.
I believe this should be a reasonable way of copying data in to an
mbuf. It would be nice if there were some significantly simpler
routines for dealing with mbufs.
-josh
On Jan 23, 2006, at 3:20 PM, Peter Lovell wrote:
Hi folks,
I'm rewriting some old, hacky kext code to use kpi etc.
One of the things is to get a chuck of data into mbufs for sending,
typically 500-800 bytes and occasionally could be a bit over 1K. I'd
like to avoid dealing with mbuf characteristics as much as
possible, and
leave that to the kpi_mbuf routines.
Looking at the functions available, it would seem that the most
reliable
way would be to allocate a header mbuf, and then call mbuf_copyback to
copy the data into it (since the function will add mbufs, clusters etc
as needed). I'll have to set pkthdr info when done, of course.
But this routine isn't included in the ADC documentation even
though it
is in the headers and not flagged as "private".
Can we rely on this routine, and/or is there a better way of copying a
hunk of data into mbufs for sending?
Thanks.....Peter
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