Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

s/destory/destroy/ (except for the code in contrib/).

Factor out my copyrights + licenses from Charles D. Cranor and
University of Washington copyrights, which include the
advertising clause. Move $NetBSD$ into standard location for
FreeBSD source files, and normalize formatting.

MFC after: 3 days

Remove FreeBSD 2.2 protocol usrreq compatibility code.

Remove minor #ifdefs for early NetBSD and OpenBSD compatibility.

Remove spl-related definitions.

MFC after: 2 weeks

Lock down netnatm and mark as MPSAFE:

- Introduce a subsystem mutex, natm_mtx, manipulated with accessor macros
NATM_LOCK_INIT(), NATM_LOCK(), NATM_UNLOCK(), NATM_LOCK_ASSERT(). It
protects the consistency of pcb-related data structures. Finer grained
locking is possible, but should be done in the context of specific
measurements (as very little work is done in netnatm -- most is in the
ATM device driver or socket layer, so there's probably not much
contention).

- Remove GIANT_REQUIRED, mark as NETISR_MPSAFE, remove
NET_NEEDS_GIANT("netnatm").

- Conditionally acquire Giant when entering network interfaces for
ifp->if_ioctl() using IFF_LOCKGIANT(ifp)/IFF_UNLOCKGIANT(ifp) in order
to coexist with non-MPSAFE atm ifnet drivers..

- De-spl.

MFC after: 2 weeks
Reviewed by: harti, bms (various versions)

/* -> /*- for license, minor formatting changes

Remove the last vestiges of ATM raw mode. This has not been useful for a
long time and has already been removed from the only driver that supported
it (en(4)) and from the man page.

Style(9): remove unneccesary space and blank lines, indentation,
function prototypes. Use LIST_FOREACH instead of explicit loops.

The indentation of functions indendet by 4 space have been left alone.
2-space indented functions have been re-indented.

Update netisr handling; Each SWI now registers its queue, and all queue
drain routines are done by swi_net, which allows for better queue control
at some future point. Packets may also be directly dispatched to a netisr
instead of queued, this may be of interest at some installations, but
currently defaults to off.

Reviewed by: hsu, silby, jayanth, sam
Sponsored by: DARPA, NAI Labs

Remove __P.

Back out the previous change to the queue(3) interface.
It was not discussed and should probably not happen.

Requested by: msmith and others

Change the way that the queue(3) structures are declared; don't assume that
the type argument to *_HEAD and *_ENTRY is a struct.

Suggested by: phk
Reviewed by: phk
Approved by: mdodd

Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot). This is consistant with the other
BSD's who made this change quite some time ago. More commits to come.

Fixed a sloppy common-style declaration.

natm_pcb.c:
Include <sys/socketvar.h> which will be used when M_PCB is declared
in the right place.

This commit was generated by cvs2svn to compensate for changes in r25603,
which included commits to RCS files with non-trunk default branches.

import Chuck Cranor's ATM driver