Enable IPv6 AF for ppp(4)

OK claudio@

Use `if_bpf' directly instead of the non-initialized duplicated copy of it.

From Sergey Ryazanov.

Reviewed by Vitaliy Makkoveev, ok claudio@

A space here, a space there. Soon we're talking real whitespace
rectification.

unbreak tree after src/sys/net/if_ppp.c r1.95.

i forgot to commit the change of the npqueue type in the header.

noticed by benoit lecocq

there's been a long standing issue in ppp on a tty/serial line where it allocates mbufs at IPL_SOFTTTY, which is above the IPL_NET the mbuf layer protects itself at.

recent improvements to diagnosti

there's been a long standing issue in ppp on a tty/serial line where it allocates mbufs at IPL_SOFTTTY, which is above the IPL_NET the mbuf layer protects itself at.

recent improvements to diagnostics in pools and mbufs now panic
instead of letting these things silently corrupt.

this reworks the ppp handling in the tty layer so it has its own
private pool to allocate packet memory out of. these packets get
built and then queued for softnet to process. softnet dequeues the
packet and attaches it to mbufs as external storage before handing
it on to the rest of the stack.

this was reported on bugs@ and tested by both Walter Daugherity and
Martin van den Nieuwelaar
ok deraadt@ mpi@

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replace the use of ifqueues for most input queues serviced by netisr
with niqueues.

this change is so big because there's a lot of code that takes
pointers to different input queues (eg, ether_input

replace the use of ifqueues for most input queues serviced by netisr
with niqueues.

this change is so big because there's a lot of code that takes
pointers to different input queues (eg, ether_input picks between
ipv4, ipv6, pppoe, arp, and mpls input queues) and falls through
to code to enqueue packets against the pointer. if i changed only
one of the input queues id have to add sepearate code paths, one
for ifqueues and one for niqueues in each of these places

by flipping all these input queues at once i can keep the currently
common code common.

testing by mpi@ sthen@ and rafael zalamena
ok mpi@ sthen@ claudio@ henning@

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support ifconfig create; ok deraadt

Remove commons; inspired by netbsd.

Paul Mackerras and the Australian National University have worked things
out, and as a result, Paul now owns copyright on all these files, with the
proper terms.

license update of CMU parts. due to communication with wcw+@andrew.cmu.edu,
pushed for by tygs@netcologne.de. Apparently we also now known how to talk
to the lawyers there, if we were so mad. Note

license update of CMU parts. due to communication with wcw+@andrew.cmu.edu,
pushed for by tygs@netcologne.de. Apparently we also now known how to talk
to the lawyers there, if we were so mad. Note that a few other copyright
issues in pppd still remain, so this does not close this story.

show more ...

Cosmetic changes only, primarily making comments line up nicely after the
__P removal.

First round of __P removal in sys

By popular demand, protect from multiple inclusion, and fix to use the
same naming style.

Convert to use new timeout API.

Add support for RFC-comliant deflate protocol

Minor changes from ppp 2.3.1

OpenBSD tags + some prototyping police

proto ppp_restart

if_name/if_unit -> if_xname/if_softc

partial sync with netbsd 960418, more to come

initial import of NetBSD tree