Commit Graph

221 Commits

Author SHA1 Message Date
John Baldwin
b406897911 iscsi: Handle large Text responses.
Text requests and responses can span multiple PDUs.  In that case, the
sender sets the Continue bit in non-final PDUs and the Final bit in
the last PDU.  The receiver responds to non-final PDUs with an empty
text PDU.

To support this, add a more abstract API in libiscsi which accepts and
receives key sets rather than PDUs.  These routines internally send or
receive one or more PDUs.  Use these new functions to replace the
handling of TextRequest and TextResponse PDUs in discovery sessions in
both ctld and iscsid.

Note that there is not currently a use case for large Text requests
and those are still always sent as a single PDU.  However, discovery
sessions can return a text response listing targets that spans
multiple PDUs, so the new API supports sending and receiving multi-PDU
responses.

Reported by:	Jithesh Arakkan @ Chelsio
Reviewed by:	mav
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D33548
2021-12-29 14:36:04 -08:00
John Baldwin
fa255ab1b8 ctld: Disable -Wcast-align warnings.
clang complains about the downcasts from struct connection to struct
ctld_connection as the alignment of struct ctld_connection is higher
on 32-bit platforms.  However, the warning is in this case harmless as
the downcasts are on objects originally allocated as instances of
struct ctld_connection with suitable alignment.

Reported by:	npn, gjb
Fixes:		6378393308 Add an internal libiscsiutil library.
Sponsored by:	Chelsio Communications
2021-12-22 15:23:45 -08:00
John Baldwin
25700db366 libiscsiutil: Change keys_load/save to operate on data buffers.
This will be used in future changes to support large text requests
spanning multiple PDUs.

Provide wrapper functions keys_load/save_pdu that operate use a PDU's
data buffer.

Reviewed by:	mav
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D33547
2021-12-22 10:43:24 -08:00
John Baldwin
6378393308 Add an internal libiscsiutil library.
Move some of the code duplicated between ctld(8) and iscsid(8) into a
libiscsiutil library.

Sharing the low-level PDU code did require having a
'struct connection' base class with a method table to permit separate
initiator vs target behavior (e.g. in handling proxy PDUs).

Reviewed by:	mav, emaste
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D33544
2021-12-22 10:43:11 -08:00
John Baldwin
7ef7b252ad ctld: Always declare MaxRecvDataSegmentLength.
This key is Declarative and should always be sent even if the
initiator did not send it's own limit.  This is similar to the fix in
fc79cf4fea but for the target side.  However, unlike that fix,
failure to send the key simply results in reduced performance.

PR:		259439
Reviewed by:	mav, emaste
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D32651
2021-10-26 14:52:40 -07:00
John Baldwin
3b5f95d7bd ctld: Disable TCP DDP for connection sockets.
cxgbei is not able to offload PDU processing for a socket using TCP
DDP offload.

Sponsored by:	Chelsio Communications
2021-09-13 09:57:54 -07:00
Ryan Stone
315bca194a Fix an early return in ctld UCL parser
If the UCL ctld parser encountered a port that used the CTL
ioctl device, it fell into a special case that had an erroneous
early return.  This caused all configuration in the target
following the port attribute to be skipped.  Fix this by replacing
the return with a continue so that the rest of the config is
parsed correctly.

Sponsored by: Dell EMC Isilon
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D31703
Reviewed by: bapt
2021-08-30 22:59:33 -04:00
Emmanuel Vadot
c42e9af5f1 pkgbase: Move ctld/ctladm to iscsi package
While here only compile both of them if WITH_ISCSI is set (this is the default).

Reviewed by:	emaste
Differential Revision:	https://reviews.freebsd.org/D30755
Sponsored by:	Diablotin Systems
2021-06-19 17:49:57 +02:00
Alexander Motin
bdbc2a6fc2 Fix typo in an_initator_name.
MFC after:	1 week
2020-12-30 13:05:41 -05:00
Alexander Motin
a3434cdc6b Fix typo in ap_initator_portal.
MFC after:	1 week
2020-12-29 13:32:05 -05:00
Adrian Chadd
e72a100b79 [ctld] Fix compilation under gcc-6.4
* remove dup yylex symbol; already defined in a header file
* uint64_t is always >= 0

Reviewed by:	cem, imp
Differential Revision:	https://reviews.freebsd.org/D27046
2020-11-01 21:18:21 +00:00
Edward Tomasz Napierala
bce7ee9d41 Drop "All rights reserved" from all my stuff. This includes
Foundation copyrights, approved by emaste@.  It does not include
files which carry other people's copyrights; if you're one
of those people, feel free to make similar change.

Reviewed by:	emaste, imp, gbe (manpages)
Differential Revision:	https://reviews.freebsd.org/D26980
2020-10-28 13:46:11 +00:00
Richard Scheffenegger
ea8f1280a2 Add network QoS support for PCP to iscsi target.
Mak the Ethernet PCP codepoint configurable
for L2 local traffic, to allow lower latency for
iSCSI block IO. This addresses the target
side only.

Reviewed by:	mav, trasz, bcr
Sponsored by:	NetApp, Inc.
Differential Revision:	https://reviews.freebsd.org/D26740
2020-10-24 21:10:53 +00:00
Robert Wing
915dcdb7ac ctl.conf(5): fix LUN size in UCL format example.
Remove quotes around size in the LUN section and change the suffix to 'GB'. The
UCL format does recognize 'G' on its own, which uses a base 10 multiplier where
'GB' uses a 2 power multiplier.

Document the difference between valid suffixes when using ctl.conf(5) in the
general syntax form or in UCL format.

Reviewed by:    kevans, mav
Approved by:    kevans (mentor)
Differential Revision: https://reviews.freebsd.org/D26716
2020-10-13 18:00:23 +00:00
Edward Tomasz Napierala
ba2548b7bf Don't ignore the return value from gethostname(3). It probably
cannot happen, but it silences Coverity.

Reviewed by:	mav
MFC after:	2 weeks
Sponsored by:	NetApp, Inc.
Sponsored by:	Klara, Inc.
Differential Revision:	https://reviews.freebsd.org/D26606
2020-10-01 18:56:44 +00:00
Kyle Evans
7cc42f6d25 Do a sweep and remove most WARNS=6 settings
Repeating the default WARNS here makes it slightly more difficult to
experiment with default WARNS changes, e.g. if we did something absolutely
bananas and introduced a WARNS=7 and wanted to try lifting the default to
that.

Drop most of them; there is one in the blake2 kernel module, but I suspect
it should be dropped -- the default WARNS in the rest of the build doesn't
currently apply to kernel modules, and I haven't put too much thought into
whether it makes sense to make it so.
2020-10-01 01:10:51 +00:00
Richard Scheffenegger
64ffe6d440 Add DSCP support for network QoS to iscsi target.
In order to prioritize iSCSI traffic across a network,
DSCP can be used. In order not to rely on "ipfw setdscp"
or in-network reclassification, this adds the dscp value
directly to the portal group (where TCP sessions are accepted).

The incoming iSCSI session is first handled by ctld for any
CHAP authentication and the socket is then handed off to the
in-kernel iscsi driver without modification of the socket
parameters. Simply setting up the socket in ctld is sufficient
to keep sending outgoing iSCSI related traffic with the
configured DSCP value.

Reviewed by:	mav, trasz
MFC after:	2 weeks
Sponsored by:	NetApp, Inc.
Differential Revision:	https://reviews.freebsd.org/D26385
2020-09-27 21:43:19 +00:00
Edward Tomasz Napierala
e352957180 Make sure not to pass NULL to strtoul(3). The values come
from the kernel, but let's try to be on the safe side.

Reviewed by:	mav
MFC after:	2 weeks
Sponsored by:	NetApp, Inc.
Sponsored by:	Klara, Inc.
Differential Revision:	https://reviews.freebsd.org/D26246
2020-09-01 14:58:57 +00:00
Alexander Motin
3b11655c7e When modifying LUN pass "special" options too.
Before switching to nvlists CTL merged previous and new options, so
any options not passed just kept previous value.  Now CTL completely
replaces them, so we must pass everything still relevant.

MFC after:	1 week
Sponsored by:	iXsystems, Inc.
2020-07-28 22:32:50 +00:00
Mark Johnston
dd8b877e6a ctld: Fix a memory leak in uclparse_conf().
PR:		246596
Submitted by:	Patryk <patrykkotlowski@gmail.com>
MFC after:	1 week
2020-05-30 19:11:41 +00:00
Edward Tomasz Napierala
7fcbecd004 Add 'ctld -t', to test configuration file validity.
Reviewed by:	mav, allanjude, bcr (man pages)
MFC after:	2 weeks
Sponsored by:	Klara Inc.
Differential Revision:	https://reviews.freebsd.org/D23792
2020-03-31 13:43:09 +00:00
Baptiste Daroussin
58aad230b5 Stop linking to libl by specifying we do not need yywrap
MFC after: 3 days
2019-09-10 07:28:27 +00:00
Mariusz Zaborski
1489776d43 iscsi: simplify the capsicumization
Approved by:	trasz
Differential Revision:	https://reviews.freebsd.org/D17962
2018-11-30 19:40:16 +00:00
Marcelo Araujo
8951f05525 Rework CTL frontend & backend options to use nv(3), allow creating multiple
ioctl frontend ports.

This revision introduces two changes to CTL:
- Changes the way options are passed to CTL_LUN_REQ and CTL_PORT_REQ ioctls.
  Removes ctl_be_arg structure and associated logic and replaces it with
  nv(3)-based logic for passing in and out arguments.
- Allows creating multiple ioctl frontend ports using either ctladm(8) or
  ctld(8).
  New frontend ports are represented by /dev/cam/ctl<pp>.<vp> nodes, eg /dev/cam/ctl5.3.
  Those device nodes respond only to CTL_IO ioctl.

New command-line options for ctladm:
# creates new ioctl frontend port with using free pp and vp=0
ctladm port -c
# creates new ioctl frontend port with pp=10 and vp=0
ctladm port -c -O pp=10
# creates new ioctl frontend port with pp=11 and vp=12
ctladm port -c -O pp=11 -O vp=12
# removes port with number 4 (it's a "targ_port" number, not pp number)
ctladm port -r -p 4

New syntax for ctl.conf:
target ... {
    port ioctl/<pp>
    ...
}

target ... {
    port ioctl/<pp>/<vp>
    ...

Note: Most of this work was made by jceel@, thank you.

Submitted by:	jceel
Reworked by:	myself
Reviewed by:	mav (earlier versions and recently during the rework)
Obtained from:  FreeNAS and TrueOS
Relnotes:	Yes
Sponsored by:	iXsystems Inc.
Differential Revision:	https://reviews.freebsd.org/D9299
2018-05-10 03:50:20 +00:00
Edward Tomasz Napierala
53ed4b300e Strip trailing whitespace.
MFC after:	2 weeks
2018-04-10 08:14:31 +00:00
John-Mark Gurney
3762b440dc minor work smithing... 2018-03-24 04:21:22 +00:00
Edward Tomasz Napierala
8eebe1bf66 Add missing SPDX tags for ctld(8).
MFC after:	2 weeks
2018-01-24 16:37:29 +00:00
Eitan Adler
dae3a64fb9 userland: Fix several typos and minor errors
- duplicate words
- typos
- references to old versions of FreeBSD

Reviewed by:	imp, benno
2017-12-27 03:23:01 +00:00
Pedro F. Giffuni
1de7b4b805 various: general adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.
2017-11-27 15:37:16 +00:00
Edward Tomasz Napierala
74864a1eaa Use proper naming in a debug message.
MFC after:	2 weeks
2017-11-04 14:13:58 +00:00
Bryan Drewery
ea825d0274 DIRDEPS_BUILD: Update dependencies.
Sponsored by:	Dell EMC Isilon
2017-10-31 00:07:04 +00:00
Baptiste Daroussin
a6aeb2b6e4 Fix ctld segfaulting when using ucl conf file format and having duplicated
lun or target

Submitted by:	Nikita Kozlov <nikita.kozlov at blade-group.com>
MFC after:	3 days
Sponsored by:	blade
Differential Revision:	https://reviews.freebsd.org/D12646
2017-10-15 08:03:14 +00:00
Edward Tomasz Napierala
33481e53e7 Make ctld(8) mention cfiscsi(4).
MFC after:	2 weeks
2017-05-28 16:41:42 +00:00
Alexander Motin
9215e501b9 Do not register in CTL portal groups without portals.
From config synthax point of view such portal groups are not incorrect,
but they are useless since can not receive any connection.  And since
CTL port resource is very limited, it is good to save it.

MFC after:	2 weeks
2017-04-10 10:38:12 +00:00
Enji Cooper
653e7d6396 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
2017-03-30 04:56:27 +00:00
Enji Cooper
9118b1b092 ctld: sort #includes per style(9)
- Only include sys/types.h or sys/param.h, not both.
- Sort alphabetically.

MFC after:	3 days
Sponsored by:	Dell EMC Isilon
2017-03-27 18:59:49 +00:00
Enji Cooper
f040054c54 Allow WARNS to be overridden by the end-user
MFC after:	3 days
Sponsored by:	Dell EMC Isilon
2017-03-27 18:40:20 +00:00
Marcelo Araujo
5116725078 Use nitems() from sys/param.h.
Reviewed by:	np
MFC after:	3 weeks.
Differential Revision:	https://reviews.freebsd.org/D9945
2017-03-11 04:01:35 +00:00
Enji Cooper
64a0982bee usr.sbin: normalize paths using SRCTOP-relative paths or :H when possible
This simplifies make logic/output

MFC after:	1 month
Sponsored by:	Dell EMC Isilon
2017-03-04 11:38:03 +00:00
Alexander Motin
04108b8b21 Fix build with ICL_KERNEL_PROXY.
MFC after:	2 weeks
2017-01-20 17:43:36 +00:00
Alexander Motin
7aceb7fcd4 Fix wrong way assignment in r312190. 2017-01-14 19:58:51 +00:00
Alexander Motin
59c6e3a58f Decouple iSCSI connection limits from defaults.
If initiator does not negotiate some parameter, it expects one to get
default value, not some unknown remote hardware limit.  On the side side,
if some parameter is negotiated, its default value from RFC should not
be used for anything.
2017-01-14 18:04:12 +00:00
Alexander Motin
dad99db247 Add MAX_LUNS overflow safety checks.
While this MAX_LUNS limitation is too synthetic and should be removed,
it is better to enforce it while it is here.

MFC after:	2 weeks
2016-12-27 17:13:31 +00:00
Xin LI
9a913ec291 Plug another leak with malformed IPv6 address.
MFC after:	2 weeks
2016-11-28 07:41:01 +00:00
Xin LI
203632f263 Don't leak 'str' when we see a malformed IPv6 address.
MFC after:	2 weeks
2016-11-28 07:33:26 +00:00
Alexander Motin
2668ec0761 There appeared to be even more copy/pastes. :)
Submitted by:	Dmitry Luhtionov <dmitryluhtionov@gmail.com>
MFC after:	2 weeks
2016-10-31 16:06:57 +00:00
Alexander Motin
42f97fac5d Fix wrong copy/paste in error message.
Submitted by:	Dmitry Luhtionov <dmitryluhtionov@gmail.com>
MFC after:	2 weeks
2016-10-31 16:01:22 +00:00
Navdeep Parhar
97b84d344d Make the iSCSI parameter negotiation more flexible.
Decouple the send and receive limits on the amount of data in a single
iSCSI PDU.  MaxRecvDataSegmentLength is declarative, not negotiated, and
is direction-specific so there is no reason for both ends to limit
themselves to the same min(initiator, target) value in both directions.

Allow iSCSI drivers to report their send, receive, first burst, and max
burst limits explicitly instead of using hardcoded values or trying to
derive all of them from the receive limit (which was the only limit
reported by the drivers prior to this change).

Display the send and receive limits separately in the userspace iSCSI
utilities.

Reviewed by:	jpaetzel@ (earlier version), trasz@
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D7279
2016-08-25 05:22:53 +00:00
Marcelo Araujo
f3ccb446d2 Fix calloc(3) argument order.
Reviewed by:	trasz
MFC after:	4 weeks.
Differential Revision:	https://reviews.freebsd.org/D7532
2016-08-22 15:01:39 +00:00
Navdeep Parhar
fd936afb97 ctld(8): Fix MaxBurstLength negotiation.
The target must reply with the selected value of MaxBurstSize instead of
just echoing back the initiator's offered value.

Reviewed by:	mav@
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D7278
2016-07-22 19:28:23 +00:00