Commit Graph

6 Commits

Author SHA1 Message Date
Andre Oppermann
bb25e5ab00 Give (*ext_free) an int return value allowing for very sophisticated
external mbuf buffer management capabilities in the future.

For now only EXT_FREE_OK is defined with current legacy behavior.

Sponsored by:	The FreeBSD Foundation
2013-08-25 10:57:09 +00:00
Andre Oppermann
9a73687609 Add an mbuf pointer parameter to (*ext_free) to give the external
free function access to the mbuf the external memory was attached
to.

Mechanically adjust all users to include the mbuf parameter.

This fixes a long standing annoyance for external free functions.
Before one had to sacrifice one of the argument pointers for this.

Sponsored by:	The FreeBSD Foundation
2013-08-24 16:57:44 +00:00
Robert Watson
1c293049d9 Add parens around *free in *free++ in mbp_count() so that mbp_count()
actually works.  mbp_count() turns out only to be used in debugging code
in if_patm_intr.c, so this bug did not affect much in practice.

Found with:	Coverity Prevent(tm)
CID:		1943
2007-05-27 17:38:36 +00:00
Warner Losh
9454b2d864 /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
Don Lewis
50105bcf1a Pass MTX_DEF as the last argument to mtx_init() instead of 0. This
is not a functional change.  The code happened to work properly only
because MTX_DEF is defined as 0.
2003-12-07 21:53:41 +00:00
Hartmut Brandt
7e9024cdd9 Add a facility for devices, specifically network interfaces, that require
large to huge amounts of small or medium sized receive buffers. The problem
with these situations is that they eat up the available DMA address space
very quickly when using mbufs or even mbuf clusters. Additionally this
facility provides a direct mapping between 32-bit integers and these buffers.
This is needed for devices originally designed for 32-bit systems. Ususally
the virtual address of the buffer is used as a handle to find the buffer as
soon as it is returned by the card. This does not work for 64-bit machines
and hence this mapping is needed.
2003-07-15 08:59:38 +00:00