1. 25 Jan, 2014 2 commits
  2. 23 Jan, 2014 1 commit
    • Kent Overstreet's avatar
      percpu_ida: Make percpu_ida_alloc + callers accept task state bitmask · 6f6b5d1e
      Kent Overstreet authored
      This patch changes percpu_ida_alloc() + callers to accept task state
      bitmask for prepare_to_wait() for code like target/iscsi that needs
      it for interruptible sleep, that is provided in a subsequent patch.
      
      It now expects TASK_UNINTERRUPTIBLE when the caller is able to sleep
      waiting for a new tag, or TASK_RUNNING when the caller cannot sleep,
      and is forced to return a negative value when no tags are available.
      
      v2 changes:
        - Include blk-mq + tcm_fc + vhost/scsi + target/iscsi changes
        - Drop signal_pending_state() call
      v3 changes:
        - Only call prepare_to_wait() + finish_wait() when != TASK_RUNNING
          (PeterZ)
      Reported-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Jens Axboe <axboe@kernel.dk>
      Signed-off-by: default avatarKent Overstreet <kmo@daterainc.com>
      Cc: <stable@vger.kernel.org> #3.12+
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      6f6b5d1e
  3. 19 Jan, 2014 14 commits
  4. 18 Jan, 2014 11 commits
    • Nicholas Bellinger's avatar
      target/iblock: Add blk_integrity + BIP passthrough support · ecebbf6c
      Nicholas Bellinger authored
      This patch adds blk_integrity passthrough support for block_device
      backends using IBLOCK.
      
      This includes iblock_alloc_bip() + setup of bio_integrity_payload
      information that attaches to the leading struct bio once bio_list
      is populated during fast-path iblock_execute_rw() I/O dispatch.
      
      It also updates setup in iblock_configure_device() to detect modes
      of protection + se dev->dev_attrib.pi_prot_type accordingly, along
      with creating required bio_set integrity mempools.
      
      Cc: Martin K. Petersen <martin.petersen@oracle.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.de>
      Cc: Sagi Grimberg <sagig@mellanox.com>
      Cc: Or Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      ecebbf6c
    • Nicholas Bellinger's avatar
      target: Add protection SGLs to target_submit_cmd_map_sgls · def2b339
      Nicholas Bellinger authored
      This patch adds support to target_submit_cmd_map_sgls() for
      accepting 'sgl_prot' + 'sgl_prot_count' parameters for
      DIF protection information.
      
      Note the passed parameters are stored at se_cmd->t_prot_sg
      and se_cmd->t_prot_nents respectively.
      
      Also, update tcm_loop and vhost-scsi fabrics usage of
      target_submit_cmd_map_sgls() to take into account the
      new parameters.
      
      Cc: Martin K. Petersen <martin.petersen@oracle.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.de>
      Cc: Sagi Grimberg <sagig@mellanox.com>
      Cc: Or Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      def2b339
    • Nicholas Bellinger's avatar
      target/configfs: Expose protection device attributes · 2ed22c9c
      Nicholas Bellinger authored
      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 <martin.petersen@oracle.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.de>
      Cc: Sagi Grimberg <sagig@mellanox.com>
      Cc: Or Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      2ed22c9c
    • Nicholas Bellinger's avatar
      target/spc: Expose ATO bit in control mode page · 0c30f421
      Nicholas Bellinger authored
      This patch updates spc_modesense_control() to set the Application
      Tag Owner (ATO) bit when when DIF emulation is enabled by the
      backend device.
      Reviewed-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.de>
      Cc: Sagi Grimberg <sagig@mellanox.com>
      Cc: Or Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      0c30f421
    • Nicholas Bellinger's avatar
      target/sbc: Add P_TYPE + PROT_EN bits to READ_CAPACITY_16 · 56dac14c
      Nicholas Bellinger authored
      This patch updates sbc_emulate_readcapacity_16() to set
      P_TYPE and PROT_EN bits when DIF emulation is enabled by
      the backend device.
      Reviewed-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.de>
      Cc: Sagi Grimberg <sagig@mellanox.com>
      Cc: Or Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      56dac14c
    • Nicholas Bellinger's avatar
      target/spc: Add protection related bits to INQUIRY EVPD=0x86 · 43bb95c7
      Nicholas Bellinger authored
      This patch updates spc_emulate_evpd_86() (extended INQUIRY) to
      report GRD_CHK (Guard Check) and REF_CHK (Reference Check) bits
      when DIF emulation is enabled by the backend device.
      Reviewed-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.de>
      Cc: Sagi Grimberg <sagig@mellanox.com>
      Cc: Or Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      43bb95c7
    • Nicholas Bellinger's avatar
      target/spc: Add protection bit to standard INQUIRY output · bdbad2bd
      Nicholas Bellinger authored
      This patch updates spc_emulate_inquiry_std() to set the
      PROTECT bit when DIF emulation is enabled by the backend
      device.
      Reviewed-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.de>
      Cc: Sagi Grimberg <sagig@mellanox.com>
      Cc: Or Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      bdbad2bd
    • Nicholas Bellinger's avatar
      target/sbc: Add DIF TYPE1+TYPE3 read/write verify emulation · 41861fa8
      Nicholas Bellinger authored
      This patch adds support for DIF read/write verify emulation
      for TARGET_DIF_TYPE1_PROT + TARGET_DIF_TYPE3_PROT operation.
      
      This includes sbc_dif_verify_write() + sbc_dif_verify_read()
      calls accessable by backend drivers to perform DIF verify
      for SGL based data and protection information.
      
      Also included is sbc_dif_copy_prot() logic to copy protection
      information to/from backend provided protection SGLs.
      
      Based on scsi_debug.c DIF TYPE1+TYPE3 emulation.
      
      v2 changes:
        - Select CRC_T10DIF for TARGET_CORE in Kconfig (Fengguang)
        - Drop IP checksum logic from sbc_dif_v1_verify (MKP)
        - Fix offset on app_tag = 0xffff in sbc_dif_verify_read()
      
      Cc: Martin K. Petersen <martin.petersen@oracle.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.de>
      Cc: Sagi Grimberg <sagig@mellanox.com>
      Cc: Or Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      41861fa8
    • Nicholas Bellinger's avatar
      target/sbc: Add DIF setup in sbc_check_prot + sbc_parse_cdb · 499bf77b
      Nicholas Bellinger authored
      This patch adds sbc_check_prot() for performing various DIF
      related CDB sanity checks, along with setting cmd->prot_type
      once sanity checks have passed.
      
      Also, add calls in sbc_parse_cdb() for READ_[10,12,16] +
      WRITE_[10,12,16] to perform DIF sanity checking.
      
      v2 changes:
        - Make sbc_check_prot defined as static (Fengguang + Wei)
        - Remove unprotected READ/WRITE warning (mkp)
        - Populate cmd->prot_type + friends (Sagi)
        - Drop SCF_PROT usage
      
      Cc: Martin K. Petersen <martin.petersen@oracle.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.de>
      Cc: Sagi Grimberg <sagig@mellanox.com>
      Cc: Or Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      499bf77b
    • Nicholas Bellinger's avatar
      target: Add DIF CHECK_CONDITION ASC/ASCQ exception cases · fcc4f17b
      Nicholas Bellinger authored
      This patch adds support for DIF related CHECK_CONDITION ASC/ASCQ
      exception cases into transport_send_check_condition_and_sense().
      
      This includes:
      
        LOGICAL BLOCK GUARD CHECK FAILED
        LOGICAL BLOCK APPLICATION TAG CHECK FAILED
        LOGICAL BLOCK REFERENCE TAG CHECK FAILED
      
      that used by DIF TYPE1 and TYPE3 failure cases.
      
      Cc: Martin K. Petersen <martin.petersen@oracle.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.de>
      Cc: Sagi Grimberg <sagig@mellanox.com>
      Cc: Or Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      fcc4f17b
    • Nicholas Bellinger's avatar
      target: Add DIF related base definitions · ce65e5b9
      Nicholas Bellinger authored
      This patch adds DIF related definitions to target_core_base.h
      that includes enums for target_prot_op + target_prot_type +
      target_prot_version + target_guard_type + target_pi_error.
      
      Also included is struct se_dif_v1_tuple, along with changes
      to struct se_cmd, struct se_dev_attrib, and struct se_device.
      
      Also, add new se_subsystem_api->[init,format,free]_prot() callers
      used by target core code to setup backend specific protection
      information after the device has been configured.
      
      Enums taken from Sagi Grimberg's original patch.
      
      v2 changes:
        - Drop guard_type related definitions
        - Update target_prot_op + target_prot_ho definitions (Sagi)
        - Drop SCF_PROT + pi_prot_version flag
        - Add se_subsystem_api->format_prot() (Sagi)
        - Add hw_pi_prot_type device attribute
      
      Cc: Martin K. Petersen <martin.petersen@oracle.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.de>
      Cc: Sagi Grimberg <sagig@mellanox.com>
      Cc: Or Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      ce65e5b9
  5. 10 Jan, 2014 8 commits
  6. 18 Dec, 2013 1 commit
  7. 17 Dec, 2013 3 commits