kernel: Use <sys/bitstring.h> instead of <bitstring.h>.

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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kernel/netgraph7: Port the kernel part of the netgraph7 bluetooth stack.

It still needs more testing/debugging, along with the userland part.

In-discussion-with: nant

kernel/netgraph7: Use kprintf etc. directly instead of defining printf.

While here, remove some commented out code from dragonfly.h

In-discussion-with: nant

tcp: Implement asynchronous pru_connect

This is mainly used to improve TCP nonblocking connect(2) performance.

Before this commit the user space thread uses nonblocking connect(2)
will have to wait

tcp: Implement asynchronous pru_connect

This is mainly used to improve TCP nonblocking connect(2) performance.

Before this commit the user space thread uses nonblocking connect(2)
will have to wait for the netisr completes the SYN output. This could
be performance hit for nonblocking connect(2). First, the user space
thread is put into sleep, even if the connect(2) is nonblocking.
Second, it does not make too much sense for nonblocking connect(2) to
wait for the SYN output.

TCP's asynchronous pru_connect implementation will set ISCONNECTING
before dispatching netmsg to netisr0. The errors like EADDRNOTAVAIL,
i.e. out of local port space, will be notified through kevent(2) or
getsockopt(2) SOL_SOCKET/SO_ERROR.

NFS and other kernel code still use old synchronized pru_connect. This
commit only affects connect(2) syscall.

Sysctl node kern.ipc.soconnect_async is added to enable and disable
asynchronous pru_connect. It is enabled by default.

The performance measurement (i7-2600 w/ bnx(4)), using
tools/tools/netrate/accept_connect/kq_connect_client:

kq_connect_client -4 SERVADDR -p SERVPORT -i 8 -c 32 -l 30
(8 processes, each creates 32 connections simultaniously, run 30 secs)

16 runs average:

asynchronous pru_connect synchronized pru_connect
220979.89 conns/s 189106.88 conns/s

This commit gives ~16% performance improvement for nonblocking connect(2)

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kernel: Remove newlines from the panic messages that have one.

panic() itself will add a newline.

kernel/netgraph7: Replace usage of MALLOC/FREE with kmalloc/kfree here too.

Requested-by: Nuno Antunes

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.

Fix the way <sys/ioccom.h> is included throughout our tree.

The original intention was to include it only in header files which
define ioctl codes and not in .c or .h files which include headers
tha

Fix the way <sys/ioccom.h> is included throughout our tree.

The original intention was to include it only in header files which
define ioctl codes and not in .c or .h files which include headers
that define ioctl codes.

Adjust the tree to follow this idea.

Pointed-out-by: Guy Harris <guy@alum.mit.edu>
Dragonfly-bug: <http://bugs.dragonflybsd.org/issue1334>

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Replace all casts of NULL to something with NULL.

Netgraph port from FreeBSD - initial porting work

* Use relative #include's as appropriate so the code doesn't
dig into the original netgraph/ directory.

* Move FBSDID's and add DragonFly ids.

*

Netgraph port from FreeBSD - initial porting work

* Use relative #include's as appropriate so the code doesn't
dig into the original netgraph/ directory.

* Move FBSDID's and add DragonFly ids.

* Fix improper uses of M_NOWAIT.

* Fix uses of M_NOWAIT which should be MB_DONTWAIT and vise-versa
(also forward to Julian).

* Add a dragonfly.h compatibility header.

* NOTE: m_tag_alloc() in DFly takes MB_ flags.

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Vendor import of netgraph from FreeBSD-current 20080626

network - MP socket free & abort interactions, so_state

* Add so_refs and ref-count the socket structure to deal with
MP races on sofree().

* Ref the socket structure for all soabort() operations

network - MP socket free & abort interactions, so_state

* Add so_refs and ref-count the socket structure to deal with
MP races on sofree().

* Ref the socket structure for all soabort() operations (they are usually
asynchronous). The netmsg_pru_abort() handler will sofree() the ref
after calling the protocol stack's abort function.

* Use atomic ops to set and clear bits in so_state, because it is modified
by both the fronttend and the backend.

* Remove numerous critical sections that are no longer effective.

* Protect the accept queues with so_rcv.ssb_token.

* Protect after-the-fact calls to soisdisconnected() with a soreference()
to avoid use-after-free cases.

* Wrap unix domain, mroute, div, raw, and key sockets/protocols with their
own private tokens.

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