linux-toradex.git/Documentation/target, branch v3.10.78

target: Simplify fabric sense data length handling

2012-09-18T00:12:58+00:00

Every fabric driver has to supply a se_tfo->set_fabric_sense_len()
method, just so iSCSI can return an offset of 2.  However, every fabric
driver is already allocating a sense buffer and passing it into the
target core, either via transport_init_se_cmd() or target_submit_cmd().

So instead of having iSCSI pass the start of its sense buffer into the
core and then later tell the core to skip the first 2 bytes, it seems
easier for iSCSI just to do the offset of 2 when it passes the sense
buffer into the core.  Then we can drop the se_tfo->set_fabric_sense_len()
everywhere, and just add a couple of lines of code to iSCSI to set the
sense data length to the beginning of the buffer right before it sends
it over the network.

(nab: Remove .set_fabric_sense_len usage from tcm_qla2xxx_npiv_ops +
      change transport_get_sense_buffer to follow v3.6-rc6 code w/o
      ->set_fabric_sense_len usage)

Signed-off-by: Roland Dreier 
Signed-off-by: Nicholas Bellinger

target: Remove unused target_core_fabric_ops.get_fabric_sense_len method

2012-09-17T23:15:47+00:00

There are no callers of se_tfo->get_fabric_sense_len(), so we should
stop having every fabric driver implement it.

Signed-off-by: Roland Dreier 
Signed-off-by: Nicholas Bellinger

Documentation: Fix typo in tcm_mod_builder.py

2012-02-10T08:52:18+00:00

Correct spelling "alocate" to "allocate" in
Documentation/target/tcm_mod_builder.py

Signed-off-by: Masanari Iida 
Signed-off-by: Jiri Kosina

target: tcm_mod_builder: small fixups

2011-12-14T11:38:25+00:00

This includes:
- remove on _ in "__NAMELEN" in $fabric _make_tport
- target_fabric_configfs_init() returns an error pointer and not NULL
  anymore. Consider that.
- replace (!(var_name)) with (!var_name). The extra () are not required
- remove #ifdef MODULE. If the code is builtin it needs an init function
  or the code is useless
- put exit/clean functions into __exit

Signed-off-by: Sebastian Andrzej Siewior 
Signed-off-by: Nicholas Bellinger

Documentation/target: Fix tcm_mod_builder.py build breakage

2011-12-14T11:37:37+00:00

This patch fixes TFO->release_cmd() and removes legacy pack_lun() usage
and new_cmd_failure when generating new TCM fabric skeleton from the
tcm_mod_builder.py script.

Reported-by: Stefan Bergstrand 
Signed-off-by: Nicholas Bellinger

target: header reshuffle, part2

2011-12-14T11:26:05+00:00

This reorganized the headers under include/target into:

 - target_core_base.h stays as is with all target-wide data stuctures and defines
 - target_core_backend.h contains the whole interface to I/O backends
 - target_core_fabric.h contains the whole interface to fabric modules

Except for those only the various configfs macro headers stay around.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

[SCSI] tcm_mod_builder.py: Fix generated *_drop_nodeacl() handler

2011-03-23T16:36:45+00:00

This patch adds the missing core_tpg_del_initiator_node_acl() call required
by fabric modules for struct se_node_acl->acl_group context shutdown via

	target_core_fabric_configfs.c:target_fabric_nacl_base_release() ->

		struct target_core_fabric_ops->fabric_drop_nodeacl()

for tcm_mod_builder.py generated $FABRIC_MOD_configfs.c skeleton code.

Signed-off-by: Fubo Chen 
Signed-off-by: Nicholas A. Bellinger 
Signed-off-by: James Bottomley

[SCSI] target: tcm_mod_builder.py generated Makefile cleanups

2011-03-23T16:36:22+00:00

This patch converts the tcm_mod_builder.py generation script to
create a new drivers/target/$TCM_FABRIC_MOD/Makefile and update
drivers/target/Makefile, instead of creating+updating a 'Kbuild'
filename.

It also removes the remaining EXTRA_CFLAGS includes from
tcm_mod_build_kbuild(), and converts fabric module generated .c
code to us ""-style includes for $FABRIC_MOD_[base,fabric].h

Reported-by: Christoph Hellwig 
Signed-off-by: Nicholas A. Bellinger 
Signed-off-by: James Bottomley

[SCSI] target: Add LIO target core v4.0.0-rc6

2011-01-14T16:12:29+00:00

LIO target is a full featured in-kernel target framework with the
following feature set:

High-performance, non-blocking, multithreaded architecture with SIMD
support.

Advanced SCSI feature set:

    * Persistent Reservations (PRs)
    * Asymmetric Logical Unit Assignment (ALUA)
    * Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
    * Full Error Recovery (ERL=0,1,2)
    * Active/active task migration and session continuation (ERL=2)
    * Thin LUN provisioning (UNMAP and WRITE_SAMExx)

Multiprotocol target plugins

Storage media independence:

    * Virtualization of all storage media; transparent mapping of IO to LUNs
    * No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
    * Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.

Standards compliance:

    * Full compliance with IETF (RFC 3720)
    * Full implementation of SPC-4 PRs and ALUA

Significant code cleanups done by Christoph Hellwig.

[jejb: fix up for new block bdev exclusive interface. Minor fixes from
 Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger 
Signed-off-by: James Bottomley