kernel: Use NULL for pointers.

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.

icmp: Bring in reply_src and reply_from_interface sysctl nodes.

They act as fallback mechanism if proper inet address could not
be found on the packet incoming interface.

reply_from_interface:

icmp: Bring in reply_src and reply_from_interface sysctl nodes.

They act as fallback mechanism if proper inet address could not
be found on the packet incoming interface.

reply_from_interface:
icmp reply from incoming interface for non-local packets
reply_src:
icmp reply source for non-local packets

Obtained-from: FreeBSD

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

pr_ctlinput is usually called when certains types of ICMP packets are received.
However, the processing of ICMP packets happens in netisr0, which means the
thread context, in which pr_ctlinput is cal

pr_ctlinput is usually called when certains types of ICMP packets are received.
However, the processing of ICMP packets happens in netisr0, which means the
thread context, in which pr_ctlinput is called, is not correct. To handle this
following two fixes are applied:
- Add pr_ctlport to protosw and ip6protosw, which could be used to locate
correct msgport to call pr_ctlinput for specific protocol
- All necessary information needed by pr_ctlinput are gather into one netmsg,
and this netmsg is delivered synchronously (some information is on the stack)

Note for new protocol implementation:
pr_ctlinput and pr_ctlport should be both NULL or both non-NULL.

Obtained-from: dillon@
Tested-by: pavalos@

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Save srcroute options in a mtag associated the mbuf, mainly to eliminate two
"ugly" global variables -- ip_nhops and ip_srcrt.

Obtained-from: FreeBSD

Parallelize in_ifaddrhashtbl

* Implement SOCK_SEQPACKET sockets for local communications. These sockets
operate like SOCK_STREAM but each write() builds a record and each read()
reads a record. That is, the data is not agg

* Implement SOCK_SEQPACKET sockets for local communications. These sockets
operate like SOCK_STREAM but each write() builds a record and each read()
reads a record. That is, the data is not aggregated together or allowed
to be partially read.

This allows local sockets to have the same packetization characteristics
as if_tap when desired.

* Add a feature to the vkernel which allows a unix domain socket to be
specified for the network interface rather then a TAP interface. The
vkernel will connect to the socket using SOCK_SEQPACKET and read and
write packets to it.

* Clean up some libc/kernel namespace collisions related to including
sys/socket.h.

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Parallelize ifnet.if_addrhead accessing by duplicating the list itself
on each CPU, each list element points to ifaddr:
- Add SI_SUB_PRE_DRIVERS before SI_SUB_DRIVERS, so action could be taken
befo

Parallelize ifnet.if_addrhead accessing by duplicating the list itself
on each CPU, each list element points to ifaddr:
- Add SI_SUB_PRE_DRIVERS before SI_SUB_DRIVERS, so action could be taken
before drivers' initialization (mainly before NIC driver's if_attach())
- Move netisr_init() to the FIRST of SI_SUB_PRE_DRIVERS, so that
netmsg_service_port_init() could be called in earlier stage of system
initialization.
- Create one thread on each CPU to propagate changes to ifnet.if_addrhead.
Their thread ports are registered with netmsg_service_port_init() for
port syncing operation.
- Change to ifnet.if_addrhead begins in netisr0, i.e. serial of changes
to ifnet.if_addrhead are serialized by netisr0
- ifaddr's refcnt is moved to its list elements, i.e. per-CPU refcnt.
They are initialized to 1 instead of 0.
- A magic field is added to ifaddr list element to make sure that IFAREF
and IFAFREE are called on valid ifaddr list element. This field is
initialized to a magic value and is wiped out once the list element's
refcnt drops to 0
- To close the gap between testing and freeing, once the ifaddr list
element's refcnt drops to 0, ifa_portfn(0) (a thread's port on CPU0) is
poked to check whether ifaddr is referenced on other CPUs, if not, then
ifaddr is freed on ifa_portfn(0)

Reviewed-by: dillon@ (earlier version)

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Generalize PF_MBUF_GENERATED mbuf firewall flag

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>

- Dont pass a complete interface struct to icmp_error, just pass the mtu.

Obtained from: OpenBSD Camp
Ok'ed: dillon

- In the ICMP debug code, use %d over %x. This makes it much easier when
reading ip_icmp.h when the debug code is used.

OK: hsu

Minimal patch that allows Path MTU discovery to be turned back on, but
leave it off by default.

Tested by: Hiroki Sato, Dave Rhodus, Yonetani Tomokazu, Matt Dillon,
Andrew Atrens,

None of the callers of rtredirect() want to know the route that was modified,
so remove the last argument to rtredirect() in order to simplify reasoning
about route reference counts.

Import ALTQ support from KAME. This is based on the FreeBSD 4 snapshot.
This includes neither the ALTQ3 compat code nor the !DragonFly defines.
The macros have been replaced with inline functions in

Import ALTQ support from KAME. This is based on the FreeBSD 4 snapshot.
This includes neither the ALTQ3 compat code nor the !DragonFly defines.
The macros have been replaced with inline functions in net/ifq_var.h.

This also renames pkthdr.pf_flags as it is intended as general flag bit.
Currently supported are ppp(4), sppp(4), tun(4) and wi(4), more drivers
are coming later.

Reviewed-by: corecode, dillon, hsu
Comments-from: hmp

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Now that I understand the poorly written BSD routing code and what
it was trying to do, rewrite it in a clear and concise manner.

The old rtalloc1() code written by CSRG had a number of problems:

Now that I understand the poorly written BSD routing code and what
it was trying to do, rewrite it in a clear and concise manner.

The old rtalloc1() code written by CSRG had a number of problems:
1. it was not clear which route was being returned
2. it was not clear what was being reported
3. it hid the essential radix tree lookup operation inside a series of
conditional tests and inline assignments
4. it had multiple gotos to the inside of if statements
5. it intermixed reporting code with the operational logic of lookup
and cloning
6. it assigns multiple times to key variables
7. it has unnecessary assignments to key variables
8. it overloaded the "report" argument parameter, to have two
different semantics
9. it misnamed the key route lookup function "rtalloc1", obscuring all uses
of route lookup.

In contrast to the rtalloc1 code in FreeBSD 4 or the even more convoluted
rtalloc1 code in FreeBSD 5, the DragonFlyBSD version
A. has a clear control flow that makes the common case obvious
by highlighting the core call to the radix tree look up function,
eliminating gotos into if statements,
and completely separating out the special-case cloning logic
B. makes it clear which route is being returned
by only assigning once to the key "rt" variable
and by expliciting returning "rt" or "clonedroute"
C. abstracts out the reporting code into its own reporting API
D. cleans up the semantics of the "report" argument parameter to
only indicate whether to report a miss and not whether to clone
E. introduces a simple single-argument API for caller that want to clone
and those that do not.

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Cosmetic cleanups.

Forced commit to say the previous commit wasn't really a buffer overflow
after all, but the code is more uniform this way, so leave it like this,
except for ipsec.c where we use the standard libkern

Forced commit to say the previous commit wasn't really a buffer overflow
after all, but the code is more uniform this way, so leave it like this,
except for ipsec.c where we use the standard libkern inet_ntoa() instead of
defining a private copy.

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Fix buffer overflow bug involving inet_ntoa().

Equivalent to: FreeBSD rev 1.82

Ok'ed by: hsu@

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

Update includes now that the Fast IPSec code has moved to netproto/ipsec.

Submitted by: Pawel Biernacki <kaktus@dragonflybsd.pl>

Kernel part of PF

Ported-by:
- Max Layer (original patch set, FreeBSD PF maintainer)
- Devon O'Dell, Simon 'corecode' Schubert (integration and DragonFly specific
changes)

In contrast to FreeBSD

Kernel part of PF

Ported-by:
- Max Layer (original patch set, FreeBSD PF maintainer)
- Devon O'Dell, Simon 'corecode' Schubert (integration and DragonFly specific
changes)

In contrast to FreeBSD and OpenBSD, use direct flags in pkthdr instead of
m_tags. This reduces allocation and processing overhead.

Keep the IP header in Host Byte Order like the rest of the tree assumes.

Module support has a memory leak for vm_zones when unloading pf.ko.

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