linux-toradex.git/drivers/target/target_core_configfs.c, branch v3.14.9

target: Fix alua_access_state attribute OOPs for un-configured devices

2014-06-11T18:54:13+00:00

commit f1453773514bb8b0bba0716301e8c8f17f8d39c7 upstream.

This patch fixes a OOPs where an attempt to write to the per-device
alua_access_state configfs attribute at:

  /sys/kernel/config/target/core/$HBA/$DEV/alua/$TG_PT_GP/alua_access_state

results in an NULL pointer dereference when the backend device has not
yet been configured.

This patch adds an explicit check for DF_CONFIGURED, and fails with
-ENODEV to avoid this case.

Reported-by: Chris Boot 
Reported-by: Philip Gaw 
Cc: Chris Boot 
Cc: Philip Gaw 
Signed-off-by: Nicholas Bellinger 
Signed-off-by: Greg Kroah-Hartman

target/configfs: Expose protection device attributes

2014-01-18T09:57:47+00:00

This patch adds support for exposing DIF protection device
attributes via configfs.  This includes:

   pi_prot_type: Protection Type (0, 1, 3 currently support)
   pi_prot_format: Protection Format Operation (FILEIO only)

Within se_dev_set_pi_prot_type() it also adds the se_subsystem_api
device callbacks to setup per device protection information.

v2 changes:
  - Drop pi_guard_type + pi_prot_version related code (MKP)
  - Add pi_prot_format logic (Sagi)
  - Add ->free_prot callback in target_free_device
  - Add hw_pi_prot_type read-only attribute

Cc: Martin K. Petersen 
Cc: Christoph Hellwig 
Cc: Hannes Reinecke 
Cc: Sagi Grimberg 
Cc: Or Gerlitz 
Signed-off-by: Nicholas Bellinger

target_core_alua: Referrals configfs integration

2014-01-10T05:48:35+00:00

Referrals need an LBA map, which needs to be kept
consistent across all target port groups. So
instead of tying the map to the target port groups
I've implemented a single attribute containing the
entire map.

Signed-off-by: Hannes Reinecke 
Signed-off-by: Nicholas Bellinger

target_core_alua: Referrals infrastructure

2014-01-10T05:48:17+00:00

Add infrastructure for referrals.

v2 changes:

 - Fix unsigned long long division in core_alua_state_lba_dependent on
   32-bit  (Fengguang + Chen + Hannes)
 - Fix compile warning in core_alua_state_lba_dependent (nab)
 - Convert segment_* + sectors variables in core_alua_state_lba_dependent
   to u64 (Hannes)

Signed-off-by: Hannes Reinecke 
Signed-off-by: Nicholas Bellinger

target: Fix sizeof in kmalloc for some default_groups arrays

2013-12-16T20:42:20+00:00

Allocating an array of pointers, not the objects themselves. These two
sites now match all the other sites.

Signed-off-by: Andy Grover 
Signed-off-by: Nicholas Bellinger

target_core_configfs: split up ALUA supported states

2013-11-20T19:38:18+00:00

Split up the various ALUA states into individual attributes to
make parsing easier and adhere to the one value per attribute
sysfs principle.

(nab: Convert strict_strtoul -> kstrtoul usage)

Signed-off-by: Hannes Reinecke

target_core_alua: Make supported states configurable

2013-11-20T19:28:07+00:00

Signed-off-by: Hannes Reinecke

target core: rename (ex,im)plict -> (ex,im)plicit

2013-11-20T19:24:40+00:00

Signed-off-by: Hannes Reinecke 
Signed-off-by: Nicholas Bellinger

target: Remove TF_CIT_TMPL macro

2013-10-16T20:35:02+00:00

Remove a lingering macro that just hid a dereference.

Reviewed-by: Christoph Hellwig 
Signed-off-by: Andy Grover 
Signed-off-by: Nicholas Bellinger

2013-09-11T03:23:36+00:00

Update copyright ownership/year information for target-core,
loopback, iscsi-target, tcm_qla2xx, vhost and iser-target.

Signed-off-by: Nicholas Bellinger