- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

MFC r290615: Introduce portal group options in ctl.conf.

While CTL has concept of port options, used at least for iSCSI ports now,
before this change it was impossible to set them manually. There still
no user-configurable port options now, but I am planning to change that.

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 r279314 (by trasz): Add missing error check.

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 r278322: Add support for multiple portal groups per target.

This change allows multiple "portal-group" options to be specified per
target. Each of them may include new optional auth-group name parameter
to override per-target auth parameters for specific portal group.

Kernel side support was added earlier at r278161.

Sponsored by: iXsystems, Inc.

MFC r278037: CTL LUN mapping rewrite.

Replace iSCSI-specific LUN mapping mechanism with new one, working for any
ports. By default all ports are created without LUN mapping, exposing all
CTL LUNs as before. But, if needed, LUN mapping can be manually set on
per-port basis via ctladm. For its iSCSI ports ctld does it via ioctl(2).
The next step will be to teach ctld to work with FibreChannel ports also.

Respecting additional flexibility of the new mechanism, ctl.conf now allows
alternative syntax for LUN definition. LUNs can now be defined in global
context, and then referenced from targets by unique name, as needed. It
allows same LUN to be exposed several times via multiple targets.

While there, increase limit for LUNs per target in ctld from 256 to 1024.
Some initiators do not support LUNs above 255, but that is not our problem.

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 r273821:

Keep the token list sorted.

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 r273816:

Simplify code; no functional changes.

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 r273770:

Fix build after previous commit. While here, improve error messages.

Sponsored by: The FreeBSD Foundation

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 r273464:

Whitespace fixes.

Sponsored by: The FreeBSD Foundation

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 r264528:

Rework the way we enable CTL iSCSI port. Previously conf_apply()
needed it to be already enabled, because listening in proxy mode
requires it; however, it's conf_apply() that opens pidfiles,
so it resulted in port being enabled before pidfile was opened.
This was not so bad, but it was also disabled when pidfile couldn't
be opened due to ctld already running; this means that starting
second ctld instance screwed up the first.

Sponsored by: The FreeBSD Foundation

MFC r261763:

Use new auth-type "deny" instead of using "chap" with no chap entries;
it's cleaner this way, and gives better feedback to the user.

Sponsored by: The FreeBSD Foundation

MFC r261760:

Add a new auth-group "default", defaulting to deny, and make it possible
to redefine it. From now on, assigning auth-group to a target is no longer
mandatory.

Sponsored by: The FreeBSD Foundation

MFC r261759:

Make it possible to redefine portal-group "default".

Sponsored by: The FreeBSD Foundation

MFC r261758:

Add auth-type.

Sponsored by: The FreeBSD Foundation

MFC r261757:

Rename a variable, no functional changes.

Sponsored by: The FreeBSD Foundation

MFC r261756:

Yacc cleanup; no functional changes.

Sponsored by: The FreeBSD Foundation

MFC r261754:

Implement initiator-name and initiator-portal restrictions.

Sponsored by: The FreeBSD Foundation

MFC r261767:

Show proper configuration file line numbers in error messages.

Sponsored by: The FreeBSD Foundation

MFC r258841:

Fix typos.

Approved by: re (gjb)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Bring in the new iSCSI target and initiator.

Reviewed by: ken (parts)
Approved by: re (delphij)
Sponsored by: FreeBSD Foundation