linuxkpi: drm-kmod debugfs support

This diff extends LinuxKPI to support simple attribute files in debugfs.
These simple attributes are an essential component for compiling drm-kmod
with CONFIG_DEBU

linuxkpi: drm-kmod debugfs support

This diff extends LinuxKPI to support simple attribute files in debugfs.
These simple attributes are an essential component for compiling drm-kmod
with CONFIG_DEBUG_FS enabled.
This will allow for easier graphics driver debugging using
Intel's igt-gpu-tools.

Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D35883
Sponsored by: Google, Inc. (GSoC 2022)

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gpio: Merge TCA6416 & TCA6408 drivers into TCA64XX

This merges TCA6416, TCA6408 drivers and adds PCA9555 support.
They handle 8 pin and 16 pin ICs with basic INPUT/OUTPUT functionality.
The register

gpio: Merge TCA6416 & TCA6408 drivers into TCA64XX

This merges TCA6416, TCA6408 drivers and adds PCA9555 support.
They handle 8 pin and 16 pin ICs with basic INPUT/OUTPUT functionality.
The register map is fairly similar so there is no point in having two
separate drivers.

Reviewed by: kd
Obtained from: Semihalf
Differential Revision: https://reviews.freebsd.org/D36559

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Retire ISA sound card DMA support

As all ISA sound card drivers have been removed sndbuf_dma no longer
serves any purpose.

Reviewed by: mav
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Diffe

Retire ISA sound card DMA support

As all ISA sound card drivers have been removed sndbuf_dma no longer
serves any purpose.

Reviewed by: mav
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D34671

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da9063_rtc: Add new driver for the Dialog Semiconductor DA9063 RTC

This is a simple RTC present in the PMIC, supporting 1s precision.

This is the PMIC on SiFive's HiFive Unmatched.

Reviewed by: mh

da9063_rtc: Add new driver for the Dialog Semiconductor DA9063 RTC

This is a simple RTC present in the PMIC, supporting 1s precision.

This is the PMIC on SiFive's HiFive Unmatched.

Reviewed by: mhorne, imp
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D36200

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da9063_iic: Add new driver for the Dialog Semiconductor DA9063 PMIC

This is an MFD with regulators, an RTC and a watchdog, among other
things. This adds the necessary infrastructure for specific chi

da9063_iic: Add new driver for the Dialog Semiconductor DA9063 PMIC

This is an MFD with regulators, an RTC and a watchdog, among other
things. This adds the necessary infrastructure for specific children to
be added.

Note that the PMIC can also be attached via SPI, not just I2C, and so
the interface is abstracted. No SPI implementation is added, however.

This is the PMIC on SiFive's HiFive Unmatched.

Reviewed by: manu, mhorne
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D36199

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Import an optimized str{n}cmp on arm64

These are from the Arm Optimized Routines and don't use the VFP so are
safe to use in the kernel.

Sponsored by: The FreeBSD Foundation

divert(4): do not depend on ipfw(4)

Although originally socket was intended to use with ipfw(4) only, now
it also can be used with pf(4). On a kernel without packet filters,
it still can be used to

divert(4): do not depend on ipfw(4)

Although originally socket was intended to use with ipfw(4) only, now
it also can be used with pf(4). On a kernel without packet filters,
it still can be used to inject traffic.

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divert(4): make it compilable and working without INET

Differential revision: https://reviews.freebsd.org/D36383

cxgbe(4): Update firmwares to 1.27.0.0.

Changes since 1.26.6.0 are listed here. This list comes from the
Release Notes for "Chelsio Unified Wire 3.17.0.0 for Linux" dated
2022-07-29.

Fixes
-----

cxgbe(4): Update firmwares to 1.27.0.0.

Changes since 1.26.6.0 are listed here. This list comes from the
Release Notes for "Chelsio Unified Wire 3.17.0.0 for Linux" dated
2022-07-29.

Fixes
-----

BASE:
- Enabled all MA parity interrupt bits.
- Use config file value to override number of rx channel. nrxch=1 was not
handled in the firmware.
- Replaced read only registers with new registers EDC_H_BIST_USER_WDATA0,
EDC_H_BIST_USER_WDATA1 and EDC_H_BIST_CMD_LEN to dump the uP memory parity
error status registers.
- 10G simplex module support enabled.

Obtained from: Chelsio Communications
MFC after: 1 month
Sponsored by: Chelsio Communications

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Retire 4.4BSD raw sockets

Until today the remnants of the original code had provided some aid
in implementation of routing socket and IPSEC key socket. There were
more obfuscation rather than gener

Retire 4.4BSD raw sockets

Until today the remnants of the original code had provided some aid
in implementation of routing socket and IPSEC key socket. There were
more obfuscation rather than generalisation with this aid.

A historical reference on the original idea of the raw sockets can
be found in chapter 11 of 4.4BSD System Manager Manual:

https://raw.githubusercontent.com/sergev/4.4BSD-Lite2/master/usr/share/doc/smm/18.net.pdf

Reviewed by: melifaro
Differential revision: https://reviews.freebsd.org/D36124

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devd: move all devd notification logic to a separate file.

Currently, subr_bus.c shares logic for (a) maintaining all HW devices
(e.g. discovery/attach/detach logic) and (b) generic devctl notifica

devd: move all devd notification logic to a separate file.

Currently, subr_bus.c shares logic for (a) maintaining all HW devices
(e.g. discovery/attach/detach logic) and (b) generic devctl notification
layer for devices/PMU/GEOM/interfaces/etc).
These two subsystems share really tiny interaction interface, composed of 3
notification functions. With that in mind, move devctl layer to a
separate file, establishing a clear notification interface between the
sub.c bus layer and the provider (devctl).

The primary driver of this change is netlink implementation (D36002).
The idea is to propagate device-level events to netlink as well, so all
netlink customers can subscribe to these changes.
The long-term goal is to deprecate devctl and to use netlink as the
kernel<> userland transport provided netlink gets enough traction.

Reviewed by: imp, markj
Differential Revision: https://reviews.freebsd.org/D36091
MFC after: 1 month

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routing: move rtentry and subscription code out of route_ctl.c

route_ctl.c size has grown considerably since initial introduction.
Factor out non-relevant parts:
* all rtentry logic, such as creatio

routing: move rtentry and subscription code out of route_ctl.c

route_ctl.c size has grown considerably since initial introduction.
Factor out non-relevant parts:
* all rtentry logic, such as creation/destruction and accessors
goes to net/route/route_rtentry.c
* all rtable subscription logic goes to net/route/route_subscription.c

Differential Revision: https://reviews.freebsd.org/D36074
MFC after: 1 month

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routing: add rib_<add|del>_route_px() functions operating with nexthops.

This change adds public KPI to work with routes using pre-created
nexthops, instead of using data from addrinfo structures.

routing: add rib_<add|del>_route_px() functions operating with nexthops.

This change adds public KPI to work with routes using pre-created
nexthops, instead of using data from addrinfo structures. These
functions will be later used for adding/deleting kernel-originated
routes and upcoming netlink protocol.

As a part of providing this KPI, low-level route addition code has been
reworked to provide more control over route creation or change.
Specifically, a number of operation flags
(RTM_F_<CREATE|EXCL|REPLACE|APPEND>) have been added, defining the
desired behaviour the the route already exists (or not exists). This
change required some changes in the multipath addition code, resulting
in moving this code to route_ctl.c, rendering mpath_ctl.c empty.

Differential Revision: https://reviews.freebsd.org/D36073
MFC after: 1 month

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Add the PHY driver for the Marvell 88E1512.

This driver supports the auto negotiation mode between the copper and fiber
ports.

This PHY has two independent PHYs (one for copper and other for fiber)

Add the PHY driver for the Marvell 88E1512.

This driver supports the auto negotiation mode between the copper and fiber
ports.

This PHY has two independent PHYs (one for copper and other for fiber) but in
this case the functionality is presented as a single PHY for easy management.

Sponsored by: Rubicon Communications, LLC ("Netgate")

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cxgbe: Rename t4_kern_tls.c to t6_kern_tls.c.

This implementation of NIC TLS is specific to T6 adapters.

Sponsored by: Chelsio Communications

Suppress unused variable warning for zfs_fm.c

With clang 15, the following -Werror warning is produced:

sys/contrib/openzfs/module/zfs/zfs_fm.c:256:6: error: variable 'cnt' set but not used [-W

Suppress unused variable warning for zfs_fm.c

With clang 15, the following -Werror warning is produced:

sys/contrib/openzfs/module/zfs/zfs_fm.c:256:6: error: variable 'cnt' set but not used [-Werror,-Wunused-but-set-variable]
int cnt = 0;
^

The 'cnt' variable does not seem to be used for anything, but since this
is contributed code, suppress the warning instead.

MFC after: 3 days

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Suppress -Wstrict-prototypes for several zlib files

Clang 15 is more strict about function definitions not matching
declarations, and zlib has a lot of these, but since it is contributed
code (and i

Suppress -Wstrict-prototypes for several zlib files

Clang 15 is more strict about function definitions not matching
declarations, and zlib has a lot of these, but since it is contributed
code (and in K&R style to boot), suppress those warnings instead.

MFC after: 3 days

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Fix unused variable warning in acpica's nsaccess.c

With clang 15, the following -Werror warning is produced:

sys/contrib/dev/acpica/components/namespace/nsaccess.c:452:29: error: variable 'NumC

Fix unused variable warning in acpica's nsaccess.c

With clang 15, the following -Werror warning is produced:

sys/contrib/dev/acpica/components/namespace/nsaccess.c:452:29: error: variable 'NumCarats' set but not used [-Werror,-Wunused-but-set-variable]
UINT32 NumCarats;
^

Here, 'NumCarats' is a variable that is only used when debugging. Since
acpica is contributed code, suppress the warning with a compile flag.

MFC after: 3 days

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mac: add new mac_ddb(4) policy

Generally, access to the kernel debugger is considered to be unsafe from
a security perspective since it presents an unrestricted interface to
inspect or modify the sy

mac: add new mac_ddb(4) policy

Generally, access to the kernel debugger is considered to be unsafe from
a security perspective since it presents an unrestricted interface to
inspect or modify the system state, including sensitive data such as
signing keys.

However, having some access to debugger functionality on production
systems may be useful in determining the cause of a panic or hang.
Therefore, it is desirable to have an optional policy which allows
limited use of ddb(4) while disabling the functionality which could
reveal system secrets.

This loadable MAC module allows for the use of some ddb(4) commands
while preventing the execution of others. The commands have been broadly
grouped into three categories:
- Those which are 'safe' and will not emit sensitive data (e.g. trace).
Generally, these commands are deterministic and don't accept
arguments.
- Those which are definitively unsafe (e.g. examine <addr>, search
<addr> <value>)
- Commands which may be safe to execute depending on the arguments
provided (e.g. show thread <addr>).

Safe commands have been flagged as such with the DB_CMD_MEMSAFE flag.

Commands requiring extra validation can provide a function to do so.
For example, 'show thread <addr>' can be used as long as addr can be
checked against the system's list of process structures.

The policy also prevents debugger backends other than ddb(4) from
executing, for example gdb(4).

Reviewed by: markj, pauamma_gundo.com (manpages)
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D35371

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mac: kdb/ddb framework hooks

Add three simple hooks to the debugger allowing for a loaded MAC policy
to intervene if desired:
1. Before invoking the kdb backend
2. Before ddb command registration

mac: kdb/ddb framework hooks

Add three simple hooks to the debugger allowing for a loaded MAC policy
to intervene if desired:
1. Before invoking the kdb backend
2. Before ddb command registration
3. Before ddb command execution

We extend struct db_command with a private pointer and two flag bits
reserved for policy use.

Reviewed by: markj
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D35370

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vm_pager: Remove the default pager

It's unused now. Keep the OBJ_DEFAULT identifier, but make it an alias
of OBJT_SWAP for the benefit of out-of-tree code.

Reviewed by: alc, imp, kib
Tested by: ph

vm_pager: Remove the default pager

It's unused now. Keep the OBJ_DEFAULT identifier, but make it an alias
of OBJT_SWAP for the benefit of out-of-tree code.

Reviewed by: alc, imp, kib
Tested by: pho
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D35790

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pca954x: harmonize pca9547 and pca954x and add pca9540 support

The two implementations for the pca9548 switch and the pca9547 mux
seemed close enough so we can put them together and with a bit more

pca954x: harmonize pca9547 and pca954x and add pca9540 support

The two implementations for the pca9548 switch and the pca9547 mux
seemed close enough so we can put them together and with a bit more
abstraction add pca9540 support.

While here apply a bit of consistency in variable and driver naming and
use device_has_property instead of the FDT-only OF_ variant.

This disconnects pca9547 from the build but does not yet delete it.

MFC after: 2 weeks
Reviewed by: mmel (earlier version), avg
Differential Revision: https://reviews.freebsd.org/D35701

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Enable CRC64 checksums in xz.

Reviewed by: imp
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D35668

ovpn: Introduce OpenVPN DCO support

OpenVPN Data Channel Offload (DCO) moves OpenVPN data plane processing
(i.e. tunneling and cryptography) into the kernel, rather than using tap
devices.
This avoi

ovpn: Introduce OpenVPN DCO support

OpenVPN Data Channel Offload (DCO) moves OpenVPN data plane processing
(i.e. tunneling and cryptography) into the kernel, rather than using tap
devices.
This avoids significant copying and context switching overhead between
kernel and user space and improves OpenVPN throughput.

In my test setup throughput improved from around 660Mbit/s to around
2Gbit/s.

Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D34340

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zfs: fix static module build broken in 1f1e2261e