Move pytest wrapper to the collection of the other atf wrappers
 in libexec. It solves the problem of combining bits & pieces from
 bsd.test.mk and bgs.prog.mk to address "test binary, but not the
 suite binary".

Reviewed by:	kp
Differential Revision: https://reviews.freebsd.org/D35604
MFC after:	2 weeks

Reviewed by:		mhorne
Differential Revision:	https://reviews.freebsd.org/D32316

Add support for system wide and NUMA domain wide counters support.
Add 3 new PMC classes for ARM DMC-620 and CMN-600 controllers PMU.

Reviewed by:	mhorne
Sponsored By:	ARM
Sponsored By:	Ampere Computing
Differential Revision: https://reviews.freebsd.org/D35342

Move debug declaration out of COMPAT_FREEBSD32 in rtsock.c

MFC after: 2 weeks

Move a comment to the code that it describes.  Improve the wording.

Style fixes.

MFC after:	2 weeks

- move debug headers out of COMPAT_FREEBSD32 in rtsock.c
- remove accidentally-added LOG_ defines from syslog.h

MFC after:	2 weeks

MFC after:	2 weeks

MFC after:	2 weeks

Use unified guidelines for the severity across the routing subsystem.
Update severity for some of the already-used messages to adhere the
guidelines.
Convert rtsock logging to the new FIB_ reporting format.

MFC after:	2 weeks

route.

Reporting logic assumed there is always some nhop change for every
 successful modification operation. Explicitly check that the changed
 nexthop indeed exists when reporting back to userland.

MFC after:	2 weeks
Reported by:	Claudio Jeker <claudio.jeker@klarasystems.com>
Tested by:	Claudio Jeker <claudio.jeker@klarasystems.com>

Differential Revision:	https://reviews.freebsd.org/D31084

Implementation consists of the pytest plugin implementing ATF format and
a simple C++ wrapper, which reorders the provided arguments from ATF format
to the format understandable by pytest. Each test has this wrapper specified
after the shebang. When kyua executes the test, wrapper calls pytest, which
loads atf plugin, does the work and returns the result. Additionally, a
separate python "package", `/usr/tests/atf_python` has been added to collect
code that may be useful across different tests.

Current limitations:
* Opaque metadata passing via X-Name properties. Require some fixtures to write
* `-s srcdir` parameter passed by the runner is ignored.
* No `atf-c-api(3)` or similar - relying on pytest framework & existing python libraries
* No support for `atf_tc_<get|has>_config_var()` & `atf_tc_set_md_var()`.
 Can be probably implemented with env variables & autoload fixtures

Differential Revision: https://reviews.freebsd.org/D31084
Reviewed by:	kp, ngie

RTM_CHANGE operates on a single component of the multipath route (e.g. on a single nexthop).
Search of this nexthop is peformed by iterating over each component from multipath (nexthop)
 group, using check_info_match_nhop. The problem with the current code that it incorrectly
 assumes that `check_info_match_nhop()` returns true value on match, while in reality it
 returns an error code on failure). Fix this by properly comparing the result with 0.
Additionally, the followup code modified original necthop group instead of a new one.
Fix this by targetting new nexthop group instead.

Reported by:	thj
Tested by:	Claudio Jeker <claudio.jeker@klarasystems.com>
Differential Revision: https://reviews.freebsd.org/D35526
MFC after: 2 weeks

To allow for a dynamic page size on arm64 remove the static value from libcuse.

Differential Revision:	https://reviews.freebsd.org/D35585
MFC after:	1 week
Sponsored by:	NVIDIA Networking

In bus_dmamap_unload() on ARM, the counters for free_bpages and reserved_bpages
appear to be vulnerable to unprotected read-modify-write operations that result
in accounting that looks like a page leak.

This was noticed on a 2GB quad core i.MX6 system that has more than one device
attached via FTDI based USB serial connection.

Submitted by:	John Hein <jcfyecrayz@liamekaens.com>
Differential Revision:	https://reviews.freebsd.org/D35553
PR:		264836
MFC after:	3 days
Sponsored by:	NVIDIA Networking

The RB_ROTATE macros begin with fetching a field via a pointer. In
most cases, that value is one that has already been pulled into a
register, and the compiler cannot infer that. So, to eliminate those
needless fetches, have the caller of the RB_ROTATE macros present the
data in the third macro parameter, rather than having the macro fetch
it.

Differential Revision:	https://reviews.freebsd.org/D35520

PR:	165392

Introduce fine-grained locking on the dmamap's list of map entries,
replacing the use of the domain lock.  This is not the most significant
source of lock contention, but it is the easiest to address.

Reviewed by:	kib
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D35557

The vnode_vtype() macro was used to make the code compatible
with Mac OSX, for the Mac OSX port.
For FreeBSD, this macro just obscured the code and, therefore,
use of the macro has been deleted by previous commits.
This commit deletes the, now unused, macro.

This commit should not result in a semantics change.

The vnode_vtype() macro was used to make the code compatible
with Mac OSX, for the Mac OSX port.
For FreeBSD, this macro just obscured the code, so
avoid using it to clean up the code.

This commit should not result in a semantics change.

Most test pass identically on different kinds of sockets. However,
few edge cases work differently on stream and datagram sockets. We
want to exercise this and document.

Differential revision:	https://reviews.freebsd.org/D35420

This additional socket was created in 2e89951b and 240d5a9b
to try workaround problems with classic PF_UNIX/SOCK_DGRAM sockets.

With recent changes in kernel this trick is no longer needed, so the
trick can be reverted.

In syslogd(8) we would still create the socket for the next several
major releases for compatibility.

Differential revision:	https://reviews.freebsd.org/D35305

The "/dev/log" socket existed in pre-FreeBSD times.  Later it was
substituted to a compatibility symlink.  The symlink creation was
deprecated in FreeBSD 10.2 and 9-STABLE.

Reviewed by:		markj
Differential revision:	https://reviews.freebsd.org/D35304

A one-to-many unix/dgram socket is a socket that has been bound
with bind(2) and can get multiple connections.  A typical example
is /var/run/log bound by syslogd(8) and receiving multiple
connections from libc syslog(3) API.  Until now all of these
connections shared the same receive socket buffer of the bound
socket.  This made the socket vulnerable to overflow attack.
See 240d5a9b for a historical attempt to workaround the problem.

This commit creates a per-connection socket buffer for every single
connected socket and eliminates the problem.  The new behavior will
optimize seldom writers over frequent writers.  See added test case
scenarios and code comments for more detailed description of the
new behavior.

Reviewed by:		markj
Differential revision:	https://reviews.freebsd.org/D35303

o Use m_pkthdr.memlen from m_uiotombuf()
o Modify unp_internalize() to keep track of allocated space and memory
  as well as pointer to the last buffer.
o Modify unp_addsockcred() to keep track of allocated space and memory
  as well as pointer to the last buffer.
o Record the datagram len/memlen/ctllen in the first (from) mbuf of the
  chain in uipc_sosend_dgram() and reuse it in uipc_soreceive_dgram().

Reviewed by:		markj
Differential revision:	https://reviews.freebsd.org/D35302

Data allocated by m_uiotombuf() usually goes into a socket buffer.
We are interested in the length of useful data to be added to sb_acc,
as well as total memory used by mbufs.  The later would be added to
sb_mbcnt.  Calculating this value at allocation time allows to save
on extra traversal of the mbuf chain.

Reviewed by:		markj
Differential revision:	https://reviews.freebsd.org/D35301

This change fully splits away PF_UNIX/SOCK_DGRAM from other socket
buffer implementations, without any behavior changes.

Generic socket implementation is reduced down to one STAILQ and very
little code.

Reviewed by:		markj
Differential revision:	https://reviews.freebsd.org/D35300

Split struct sockbuf into common shared fields and protocol specific
union, where protocols are free to implement whatever buffer they
want.  Such protocols should mark themselves with PR_SOCKBUF and are
expected to initialize their buffers in their pr_attach and tear
them down in pr_detach.

Reviewed by:		markj
Differential revision:	https://reviews.freebsd.org/D35299

Use this new version in unix/dgram socket when sending to a target
address.  This removes extra lock release/acquisition and possible
counter-intuitive ENOTCONN.

Reviewed by:		markj
Differential revision:	https://reviews.freebsd.org/D35298

This allows to remove one M_NOWAIT allocation and also makes it
more clear what's going on.

Reviewed by:		markj
Differential revision:	https://reviews.freebsd.org/D35297

With this second step PF_UNIX/SOCK_DGRAM has protocol specific
implementation.  This gives some possibility performance
optimizations.  However, it still operates on the same struct
socket as all other sockets do.

Reviewed by:		markj
Differential revision:	https://reviews.freebsd.org/D35296

Just remove one level of indentation as the case clause always match.

Reviewed by:		markj
Differential revision:	https://reviews.freebsd.org/D35295