Label link layer mbufs as they are created for transmission, check
mbufs before delivering them to sockets, label mbufs as they are created
from sockets, and preserve mbuf labels if mbufs are copied.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
This is because calls with M_WAIT (now M_TRYWAIT) may not wait
forever when nothing is available for allocation, and may end up
returning NULL. Hopefully we now communicate more of the right thing
to developers and make it very clear that it's necessary to check whether
calls with M_(TRY)WAIT also resulted in a failed allocation.
M_TRYWAIT basically means "try harder, block if necessary, but don't
necessarily wait forever." The time spent blocking is tunable with
the kern.ipc.mbuf_wait sysctl.
M_WAIT is now deprecated but still defined for the next little while.
* Fix a typo in a comment in mbuf.h
* Fix some code that was actually passing the mbuf subsystem's M_WAIT to
malloc(). Made it pass M_WAITOK instead. If we were ever to redefine the
value of the M_WAIT flag, this could have became a big problem.
Some of these changes are a bit rough and will become
more polished later. the changes to if_ethersubr should largely be moved
to within the appletalk code, but that will happen later.
A few of these were related to network-byteorder problems,
and more were related to loopback failures.
to TAILQs. Fix places which referenced these for no good reason
that I can see (the references remain, but were fixed to compile
again; they are still questionable).
and fix some bugs..
also fix a bug in aarp.c that didn't take netranges into account.
default routes now work with appletalk, which is a poor-man's
way of being able to access netranges if you only have one network :)
Hopefully the full netranges fix will happen soon.
Kernel Appletalk protocol support
both CAP and netatalk can make use of this..
still needs some owrk but it seemd the right tiime to commit it
so other can experiment.
