Retire non-NEW_PCIB code and remove config option

All architectures enable NEW_PCIB in DEFAULTS (arm being the most recent
to do so in 121be555997b (arm: Set NEW_PCIB in DEFAULTS rather than a
subse

Retire non-NEW_PCIB code and remove config option

All architectures enable NEW_PCIB in DEFAULTS (arm being the most recent
to do so in 121be555997b (arm: Set NEW_PCIB in DEFAULTS rather than a
subset of kernel configs")), so it's time we removed the legacy code
that no longer sees much testing and has a significant maintenance
burden.

Reviewed by: jhb, andrew, emaste
Differential Revision: https://reviews.freebsd.org/D32954

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sys: Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

netlink: add NETLINK to the DEFAULTS for each architecture

NETLINK is going to replace rtsock and a number of other ioctl/sysctl interfaces.
In-base utilies such as route(8), netstat(8) and soon ifc

netlink: add NETLINK to the DEFAULTS for each architecture

NETLINK is going to replace rtsock and a number of other ioctl/sysctl interfaces.
In-base utilies such as route(8), netstat(8) and soon ifconfig(8)
are being converted to use netlink sockets as a transport between
kernel and userland.
In the current configuration, it still possible have the kernel
without NETLINK (`nooptions NETLINK`) and use the aforementioned
utilies by buidling the world with `WITHOUT_NETLINK` src.conf knob.
However, this approach does not cover the cases when person unintentionally
builds a custom kernel without netlink and tries to use the standard userland.

This change adds `option NETLINK` to the default options for each
architecture, fixing the custom kernel issue.
For arm, this change uses `std.armv6` and `std.armv7` (netlink already in)
instead of DEFAULTS.

Reviewed By: imp
Differential Revision: https://reviews.freebsd.org/D39339

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DEFAULTS: move intrng to DEFAULTS for its platforms.

Sponsored by: Netflix
Reviewed by: manu, kevans
Differential Revision: https://reviews.freebsd.org/D37107

tcp: make CUBIC the default congestion control mechanism.

This changes the default TCP Congestion Control (CC) to CUBIC.
For small, transactional exchanges (e.g. web objects <15kB), this
will not ha

tcp: make CUBIC the default congestion control mechanism.

This changes the default TCP Congestion Control (CC) to CUBIC.
For small, transactional exchanges (e.g. web objects <15kB), this
will not have a material effect. However, for long duration data
transfers, CUBIC allocates a slightly higher fraction of the
available bandwidth, when competing against NewReno CC.

Reviewed By: tuexen, mav, #transport, guest-ccui, emaste
Relnotes: Yes
Sponsored by: NetApp, Inc.
Differential Revision: https://reviews.freebsd.org/D36537

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tcp: better congestion control defaults

Define CC_NEWRENO in all the appropriate DEFAULTS and std.* config
files. It's the default congestion control algorithm. Add code to cc.c
so that CC_DEFAULT

tcp: better congestion control defaults

Define CC_NEWRENO in all the appropriate DEFAULTS and std.* config
files. It's the default congestion control algorithm. Add code to cc.c
so that CC_DEFAULT is "newreno" if it's not overriden in the config
file.

Sponsored by: Netflix
Fixes: b8d60729deef ("tcp: Congestion control cleanup.")
Revired by: manu, hselasky, jhb, glebius, tuexen
Differential Revision: https://reviews.freebsd.org/D32964

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Merge ^/head r337646 through r338014.

GPT is standard in x86 and arm64 land. Add it to DEFAULTS with the
others.

Differential Revision: https://reviews.freebsd.org/D16740

Enable NEW_PCIB on arm64.

Obtained from: ABT Systems Ltd
Relnotes: yes
Sponsored by: The FreeBSD Foundation

Catch up with HEAD (r280229-r284686).

Merge sync of head

Merge from head

MFH: r280643-r281852

Sponsored by: The FreeBSD Foundation

Set MACHINE_ARCH to aarch64 for arm64

Reviewed by: imp
Sponsored by: The FreeBSD Foundation

Bring in the start of the arm64 kernel.

This is only the minimum set of files needed to boot in qemu. As such it is
missing a few things.

The bus_dma code is currently only stub functions with a fu

Bring in the start of the arm64 kernel.

This is only the minimum set of files needed to boot in qemu. As such it is
missing a few things.

The bus_dma code is currently only stub functions with a full implementation
from the development tree to follow.

The gic driver has been copied as the interrupt framework is different. It
is expected the two drivers will be merged by the arm intrng project,
however this will need to be imported into the tree and support for arm64
would need to be added.

This includes code developed by myself, SemiHalf, Ed Maste, and Robin
Randhawa from ARM. This has been funded by the FreeBSD Foundation, with
early development by myself in my spare time with assistance from Robin.

Differential Revision: https://reviews.freebsd.org/D2199
Reviewed by: emaste, imp
Relnotes: yes
Sponsored by: The FreeBSD Foundation

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