MFC r288310: Add to CTL initial support for CDROMs and removable devices.

Relnotes: yes

MFC r287823: Add ctl-lun config option for consistency in HA setups.

MFC r287534: Add two new portal group options "tag" and "foreign".

They are going to be useful in clustered setups.

MFC r281532 (by delphij): Eliminate unused headers.

MFC r284542:

Allow '@' in unquoted strings, such as with the "path" statement. Note
that one can use any character they like by using double quotes.

PR: 200895
Sponsored by: The FreeBDS Foundation

MFC r278354: Teach ctld(8) to control non-iSCSI CTL ports.

This change introduces new target option "port", that assigns current target
to specified CTL port. On config application ctld(8) will apply LUN mapping
according to target configuration to specified port and bring the port up.
On shutdown cltd(8) will remove the mapping and put the port down.

This change allows to configure both iSCSI and FibreChannel targets in the
same configuration file in alike way.

Kernel side support was added earlier at r278037.

Relnotes: yes
Sponsored by: iXsystems, Inc.

MFC r274308:

Add support for sending redirections to iSCSI target.

MFC r274309:

Fix several nits in redirection handling - don't use wrong CSG,
and avoid use-after-free.

Sponsored by: The FreeBSD Foundation

MFC r273822:

Fix iscsictl(8) and ctld(8) to correctly handle Windows newlines
(CRLF) in iscsi.conf and ctl.conf.

Sponsored by: The FreeBSD Foundation

MFC r273820:

Make it possible to optionally use semicolon to separate statements.
This makes it possible to format stuff like this:

target xxx {
lun 0 { path /foo/bar; size 4G; }
}

Sponsored by: The FreeBSD Foundation

MFC r273813:

Add discovery-filter. This makes it possible to restrict which targets
are returned during discovery based on initiator portal, name, and CHAP
credentials.

MFC r273768:

Remove the distinction between strings and numbers from ctld(8) yacc parser.
This fixes problems with passing strings that look like numbers to clauses
that expect strings; previously it caused syntax errors and had to be worked
by user, using quotes. The workaround introduced in r267833 is no longer
neccessary.

Sponsored by: The FreeBSD Foundation

MFC r273635, r273793, r274797: Add basic iSNS client to the iSCSI target.

This makes ctld(8) register its iSCSI targets and portals on configured
iSNS servers to allow initiators find them without active discovery.

Fetching of allowed initiators from iSNS is not implemented now, so target
ACLs still should be configured manually.

Relnotes: Yes
Sponsored by: iXsystems, Inc.

MFC: 267833

Fix issues in config parser relating to lun serial numbers.

Without this fix some serial numbers needed to be quoted
to avoid the config parser bailing out.

Submitted by: delphij
Sponsored by: iXsystems

MFC r261758:

Add auth-type.

Sponsored by: The FreeBSD Foundation

MFC r261754:

Implement initiator-name and initiator-portal restrictions.

Sponsored by: The FreeBSD Foundation

MFC r261766:

Make ctld error out on invalid characters in ctl.conf.

Sponsored by: The FreeBSD Foundation

MFC r287534: Add two new portal group options "tag" and "foreign".

They are going to be useful in clustered setups.

MFC r281532 (by delphij): Eliminate unused headers.

MFC r284542:

Allow '@' in unquoted strings, such as with the "path" statement. Note
that one can use any character they like by using double quotes.

PR: 200895
Sponsored by: The FreeBDS Foundation

MFC r278354: Teach ctld(8) to control non-iSCSI CTL ports.

This change introduces new target option "port", that assigns current target
to specified CTL port. On config application ctld(8) will apply LUN mapping
according to target configuration to specified port and bring the port up.
On shutdown cltd(8) will remove the mapping and put the port down.

This change allows to configure both iSCSI and FibreChannel targets in the
same configuration file in alike way.

Kernel side support was added earlier at r278037.

Relnotes: yes
Sponsored by: iXsystems, Inc.

MFC r274308:

Add support for sending redirections to iSCSI target.

MFC r274309:

Fix several nits in redirection handling - don't use wrong CSG,
and avoid use-after-free.

Sponsored by: The FreeBSD Foundation

MFC r273822:

Fix iscsictl(8) and ctld(8) to correctly handle Windows newlines
(CRLF) in iscsi.conf and ctl.conf.

Sponsored by: The FreeBSD Foundation

MFC r273820:

Make it possible to optionally use semicolon to separate statements.
This makes it possible to format stuff like this:

target xxx {
lun 0 { path /foo/bar; size 4G; }
}

Sponsored by: The FreeBSD Foundation

MFC r273813:

Add discovery-filter. This makes it possible to restrict which targets
are returned during discovery based on initiator portal, name, and CHAP
credentials.

MFC r273768:

Remove the distinction between strings and numbers from ctld(8) yacc parser.
This fixes problems with passing strings that look like numbers to clauses
that expect strings; previously it caused syntax errors and had to be worked
by user, using quotes. The workaround introduced in r267833 is no longer
neccessary.

Sponsored by: The FreeBSD Foundation

MFC r273635, r273793, r274797: Add basic iSNS client to the iSCSI target.

This makes ctld(8) register its iSCSI targets and portals on configured
iSNS servers to allow initiators find them without active discovery.

Fetching of allowed initiators from iSNS is not implemented now, so target
ACLs still should be configured manually.

Relnotes: Yes
Sponsored by: iXsystems, Inc.

MFC: 267833

Fix issues in config parser relating to lun serial numbers.

Without this fix some serial numbers needed to be quoted
to avoid the config parser bailing out.

Submitted by: delphij
Sponsored by: iXsystems

MFC r261758:

Add auth-type.

Sponsored by: The FreeBSD Foundation

MFC r261754:

Implement initiator-name and initiator-portal restrictions.

Sponsored by: The FreeBSD Foundation

MFC r261766:

Make ctld error out on invalid characters in ctl.conf.

Sponsored by: The FreeBSD Foundation