Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

CTL: Increase maximum SCSI tag size from 32 to 64 bits.

SAM-5 specification states maximum size of command identifier (tag),
defined by specific transports, should not be larger than 64 bits.
While

CTL: Increase maximum SCSI tag size from 32 to 64 bits.

SAM-5 specification states maximum size of command identifier (tag),
defined by specific transports, should not be larger than 64 bits.
While most of supported transports use 32 bits or less, it was
reported that virtio-scsi uses 64 bits. Truncation to 32 bits in
bhyve code caused false tag conflict errors reported and possibly
other issues.

This changes CTL ABI and HA protocol, so CTL_HA_VERSION is bumped.

While we make HA protocol incompatible, increase default maximum
number of ports in CTL from 256 to 1024, matching number of LUNs.
There are many reports from people who need many iSCSI targets with
only one LUN each. Increased memory consumption should be less of
a problem these days.

PR: 267539

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MFhead@r344527

Merge ^/head r344178 through r344512.

Fix a slew of mdoc errors and warnings.

MFC after: 1 week

Merge ^/head r325505 through r325662.

ctl(4): Insert a new line after a sentence-ending full stop.

Reported by: bjk
MFC after: 2 weeks
Sponsored by: Gandi.net
X-MFC-With: r325517

ctl: Make max_luns and max_ports tunable variables instead of hardcoded
defines.

Reviewed by: trasz (earlier version), bapt (earlier version), bcr (manpages)
MFC after: 2 Weeks
Sponsored by: Gandi.n

ctl: Make max_luns and max_ports tunable variables instead of hardcoded
defines.

Reviewed by: trasz (earlier version), bapt (earlier version), bcr (manpages)
MFC after: 2 Weeks
Sponsored by: Gandi.net
Differential Revision: https://reviews.freebsd.org/D12836

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Split iscsi(4) ctl frontend off of ctl(4) as cfiscsi(4)

The goal of this work is to remove the explicit dependency for ctl(4)
on iscsi(4), so end-users without iscsi(4) support in the kernel can
use

Split iscsi(4) ctl frontend off of ctl(4) as cfiscsi(4)

The goal of this work is to remove the explicit dependency for ctl(4)
on iscsi(4), so end-users without iscsi(4) support in the kernel can
use ctl(4) for its other functions.

This allows those without iscsi(4) support built into the kernel to use
ctl(4) as a test mechanism. As a sidenote, this was possible around the
10.0-RELEASE period, but made impossible for end-users without iscsi(4)
between 10.0-RELEASE and 11.0-RELEASE.

Automatically load cfiscsi(4) from ctladm(8) and ctld(8) for backwards
compatibility with previously releases. The automatic loading feature is
compiled into the beforementioned tools if MK_ISCSI == yes when building
world.

Add a manpage for cfiscsi(4) and refer to it in ctl(4).

Differential Revision: D10099
MFC after: 2 months
Relnotes: yes
Reviewed by: mav, trasz
Sponsored by: Dell EMC Isilon

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Bring back the "i". The point is to make it easy to find via "apropos
iscsi", along with all the other relevant components.

MFC after: 2 weeks

Some more polishing.

MFC after: 13 days

Improve ctl(4) description, including frontends and backends.

MFC after: 2 weeks

Merge ^/head r313896 through r314128.

Document r313854 (kern.cam.ctl.iscsi.maxtags).

MFC after: 12 days

Add USB Mass Storage CTL frontend. This makes it possible
for USB OTG-capable hardware to implement device side of USB
Mass Storage, ie pretend it's a flash drive. It's configured
in the same way a

Add USB Mass Storage CTL frontend. This makes it possible
for USB OTG-capable hardware to implement device side of USB
Mass Storage, ie pretend it's a flash drive. It's configured
in the same way as other CTL frontends, using ctladm(8)
or ctld(8). Differently from usfs(4), all the configuration
can be done without rebuilding the kernel.

Testing and review is welcome. Right now I'm still moving,
and I don't have access to my test environment, so I'm somewhat
reluctant to making larger changes to this code; on the other
hand I don't want to let it sit on Phab until my testing setup
is back, because I want to get it into 11.1-RELEASE.

Reviewed by: emaste (cursory), wblock (man page)
MFC after: 2 weeks
Relnotes: yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D8787

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Merge from head

Sponsored by: Gandi.net

Merge from head

Merge ^/head r288197 through r288456.

Merge from head

Sync up with head (up to r288341).

Add to CTL initial support for CDROMs and removable devices.

Relnotes: yes

Merge ^/head r287680 through r287877.

Finish merging from head, messed up in previous attempt

Merge from head

CTL documentation update, mostly for HA.