network - Remove ip_len header-length adjustment

* This should remove the last main code path modifications to packet
mbuf contents. The IP header in the mbuf is now basically left alone
whenev

network - Remove ip_len header-length adjustment

* This should remove the last main code path modifications to packet
mbuf contents. The IP header in the mbuf is now basically left alone
whenever possible, bringing us in-line with FreeBSD and Linux and
removing cache-line bounces between cpus and between a cpu and the
related PCIe DMA.

* Do not adjust ip_len to remove the IP header length.

* Various protocol stacks do the subtraction themselves, when needed.

* Various bits of code that added the length back in to execute a function
then removed it again cleaned up.

* IP reassembly (in ip_input.c and pf_norm.c) cleaned up.

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network - Remove host-order translations of ipv4 ip_off and ip_len

* Do not translate ip_off and ip_len to host order and then back again
in the network stack. The fields are now left in network

network - Remove host-order translations of ipv4 ip_off and ip_len

* Do not translate ip_off and ip_len to host order and then back again
in the network stack. The fields are now left in network order.

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netisr: Simplify assertion related bits

net: Use PR_{FAST,SLOW}HZ, some code has the assumption of these macro usage.

igmp: Don't use pr_slowtimo.

igmp: Use callout instead of pffasttimo.

kernel: Move us to using M_NOWAIT and M_WAITOK for mbuf functions.

The main reason is that our having to use the MB_WAIT and MB_DONTWAIT
flags was a recurring issue when porting drivers from FreeBSD

kernel: Move us to using M_NOWAIT and M_WAITOK for mbuf functions.

The main reason is that our having to use the MB_WAIT and MB_DONTWAIT
flags was a recurring issue when porting drivers from FreeBSD because
it tended to get forgotten and the code would compile anyway with the
wrong constants. And since MB_WAIT and MB_DONTWAIT ended up as ocflags
for an objcache_get() or objcache_reclaimlist call (which use M_WAITOK
and M_NOWAIT), it was just one big converting back and forth with some
sanitization in between.

This commit allows M_* again for the mbuf functions and keeps the
sanitizing as it was before: when M_WAITOK is among the passed flags,
objcache functions will be called with M_WAITOK and when it is absent,
they will be called with M_NOWAIT. All other flags are scrubbed by the
MB_OCFLAG() macro which does the same as the former MBTOM().

Approved-by: dillon

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igmp: Prioritize fast and slow timeout netmsgs

ifnet: Properly protect if_multiaddrs using ifnet serializers

- Protect ifnet.if_multiaddrs using ifnet serializers. Add some
comment in the places, where only main serailizer is necessary.
- Fix

ifnet: Properly protect if_multiaddrs using ifnet serializers

- Protect ifnet.if_multiaddrs using ifnet serializers. Add some
comment in the places, where only main serailizer is necessary.
- Fix if_delallmulti(). Using TAILQ_FOREACH_MUTABLE is incorrect for
deleting an ifmultiaddr from ifnet.if_multiaddrs. Since deleting one
ifmultiaddr may cause additional ifmultiaddr deletion (e.g. the AF_LINK
ifmultiaddr for AF_INET ifmultiaddr).
- Change IN_LOOKUP_MULTI and IN6_LOOKUP_MULTI macros into inline
functions.
- Redispatch multicast IP packets to netisr0 for further processing.
Software based IP packet hash function is changed. And hash value
fixup for multicast IP packets is added to the beginning of ip_input();
this is mainly for IP packets, whose hash is calculated by hardware.
- For wlan's multicast hardware filter updating, we no longer need to
release wlan serializer and mess up w/ the if_ioctl setting.

In netisr0, read and test ifma_refcount for AF_INET ifmultiaddr is MPSAFE
w/o ifnet serializers, since its ifma_refcount is only altered in netisr0.

In netisr0, any operation on in_multi, which is obtained from the
corresponding ifmuliaddr's ifma_protospec, is MPSAFE w/o ifnet
serializers, since ifmultiaddr for AF_INET is only set and cleared in
netisr0.

While I'm here also redispatch IP packets w/o hash to the proper netisrs,
on ip_input() path. And unnecessary critical sections in
in_{add,del}multi() are removed.

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igmp: Dispatch fast and slow timeout handler to netisr0

Netisr0 is where IGMP is to be handled.

Correct BSD License clause numbering from 1-2-4 to 1-2-3.

Apparently everyone's doing it:
http://svnweb.freebsd.org/base?view=revision&revision=251069

Submitted-by: "Eitan Adler" <lists at eitanadl

Correct BSD License clause numbering from 1-2-4 to 1-2-3.

Apparently everyone's doing it:
http://svnweb.freebsd.org/base?view=revision&revision=251069

Submitted-by: "Eitan Adler" <lists at eitanadler.com>

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Remove advertising clause from all that isn't contrib or userland bin.

By: Eitan Adler <lists@eitanadler.com>

kernel: Use NULL for pointers.

kernel: Replace all usage of MALLOC()/FREE() with kmalloc()/kfree().

Initial import of binutils 2.22 on the new vendor branch

Future versions of binutils will also reside on this branch rather
than continuing to create new binutils branches for each new version.

Generally use NULL instead of explicitly casting 0 to some pointer type (part2).

Parallelize in_ifaddrhead operation

Rename printf -> kprintf in sys/ and add some defines where necessary
(files which are used in userland, too).

* Remove (void) casts for discarded return values.

* Put function types on separate lines.

* Ansify function definitions.

* Remove __P.

In-collaboration-with: Alexey Slynko <slynko@tronet.ru>

Remove spl*() calls from netinet, replacing them with critical sections.
A slight rearrangement of COMMON_START() in tcp_usrreq.c was necessary to
ensure that the inp is loaded after entering the cr

Remove spl*() calls from netinet, replacing them with critical sections.
A slight rearrangement of COMMON_START() in tcp_usrreq.c was necessary to
ensure that the inp is loaded after entering the critical section.

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Clean up the routing and networking code before I parallelize routing.

Make pr_input use variadic arguments for anything but the first mbuf.

Add a warning for NSIP, it is likely to be broken.

Change mbug allocation flags from M_ to MB_ to avoid confusion with malloc
flags.

Requested by: Jeffrey Hsu

M_NOWAIT to mostly M_INTWAIT conversions, with a splattering of
M_NULLOK to prevent exhaustion attacks from crashing the system.

Note in patricular that the MALLOC tseg_qent for the tcp reassembly
q

M_NOWAIT to mostly M_INTWAIT conversions, with a splattering of
M_NULLOK to prevent exhaustion attacks from crashing the system.

Note in patricular that the MALLOC tseg_qent for the tcp reassembly
queue went from M_NOWAIT to M_INTWAIT | M_NULLOK.

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Move <machine/in_cksum.h> to <sys/in_cksum.h>. This file is now platform
independant. If we want to add extreme machine specialization later on
then sys/in_cksum.h will #include machine/in_cksum.h.

Move <machine/in_cksum.h> to <sys/in_cksum.h>. This file is now platform
independant. If we want to add extreme machine specialization later on
then sys/in_cksum.h will #include machine/in_cksum.h.

Move i386/i386/in_cksum.c to netinet/in_cksum.c. Note that netinet/in_cksum.c
already existed but was not used by the build system at all. The move
overwrites it. The new in_cksum.c is a portable, complete rewrite which
references core assembly (procedure call) to do 32-bit-aligned work. See
also i386/i386/in_cksum2.s.

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