Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

Pull scsi target updates from Nicholas Bellinger:
 "The highlights in this series include:

   - Improve sg_table lookup scalability in RAMDISK_MCP (martin)

   - Add device attribute to expose config name for INQUIRY model (tregaron)

   - Convert tcm_vhost to use lock-less list for cmd completion (asias)

   - Add tcm_vhost support for multiple target's per endpoint (asias)

   - Add tcm_vhost support for multiple queues per vhost (asias)

   - Add missing mapped_lun bounds checking during make_mappedlun setup
     in generic fabric configfs code (jan engelhardt + nab)

   - Enforce individual iscsi-target network portal export once per
     TargetName endpoint (grover + nab)

   - Add WRITE_SAME w/ UNMAP=0 emulation to FILEIO backend (nab)

  Things have been mostly quiet this round, with majority of the work
  being done on the iser-target WIP driver + associated iscsi-target
  refactoring patches currently in flight for v3.10 code.

  At this point there is one patch series left outstanding from Asias to
  add support for UNMAP + WRITE_SAME w/ UNMAP=1 to FILEIO awaiting
  feedback from hch & Co, that will likely be included in a post
  v3.9-rc1 PULL request if there are no objections.

  Also, there is a regression bug recently reported off-list that seems
  to be effecting v3.5 and v3.6 kernels with MSFT iSCSI initiators that
  is still being tracked down.  No word if this effects >= v3.7 just
  yet, but if so there will likely another PULL request coming your
  way.."

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (26 commits)
  target: Rename spc_get_write_same_sectors -> sbc_get_write_same_sectors
  target/file: Add WRITE_SAME w/ UNMAP=0 emulation support
  iscsi-target: Enforce individual network portal export once per TargetName
  iscsi-target: Refactor iscsit_get_np sockaddr matching into iscsit_check_np_match
  target: Add missing mapped_lun bounds checking during make_mappedlun setup
  target: Fix lookup of dynamic NodeACLs during cached demo-mode operation
  target: Fix parameter list length checking in MODE SELECT
  target: Fix error checking for UNMAP commands
  target: Fix sense data for out-of-bounds IO operations
  target_core_rd: break out unterminated loop during copy
  tcm_vhost: Multi-queue support
  tcm_vhost: Multi-target support
  target: Add device attribute to expose config_item_name for INQUIRY model
  target: don't truncate the fail intr address
  target: don't always say "ipv6" as address type
  target/iblock: Use backend REQ_FLUSH hint for WriteCacheEnabled status
  iscsi-target: make some temporary buffers larger
  tcm_vhost: Optimize gup in vhost_scsi_map_to_sgl
  tcm_vhost: Use iov_num_pages to calculate sgl_count
  tcm_vhost: Introduce iov_num_pages
  ...

include/target/target_core_backend.h

@@ -35,6 +35,7 @@ struct se_subsystem_api {
 	u32 (*get_device_type)(struct se_device *);
 	sector_t (*get_blocks)(struct se_device *);
 	unsigned char *(*get_sense_buffer)(struct se_cmd *);
+	bool (*get_write_cache)(struct se_device *);
 };
 
 struct sbc_ops {
@@ -52,11 +53,13 @@ void	target_complete_cmd(struct se_cmd *, u8);
 
 sense_reason_t	spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
 sense_reason_t	spc_emulate_report_luns(struct se_cmd *cmd);
-sector_t	spc_get_write_same_sectors(struct se_cmd *cmd);
+sense_reason_t	spc_emulate_inquiry_std(struct se_cmd *, unsigned char *);
+sense_reason_t	spc_emulate_evpd_83(struct se_cmd *, unsigned char *);
 
 sense_reason_t	sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops);
 u32	sbc_get_device_rev(struct se_device *dev);
 u32	sbc_get_device_type(struct se_device *dev);
+sector_t	sbc_get_write_same_sectors(struct se_cmd *cmd);
 
 void	transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
 int	transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);

include/target/target_core_base.h

@@ -44,7 +44,7 @@
 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
 #define TG_PT_GROUP_NAME_BUF			256
 /* Used to parse VPD into struct t10_vpd */
-#define VPD_TMP_BUF_SIZE			128
+#define VPD_TMP_BUF_SIZE			254
 /* Used by transport_generic_cmd_sequencer() */
 #define READ_BLOCK_LEN          		6
 #define READ_CAP_LEN            		8
@@ -75,6 +75,8 @@
 #define DA_MAX_WRITE_SAME_LEN			0
 /* Default max transfer length */
 #define DA_FABRIC_MAX_SECTORS			8192
+/* Use a model alias based on the configfs backend device name */
+#define DA_EMULATE_MODEL_ALIAS			0
 /* Emulation for Direct Page Out */
 #define DA_EMULATE_DPO				0
 /* Emulation for Forced Unit Access WRITEs */
@@ -193,6 +195,7 @@ enum tcm_sense_reason_table {
 	TCM_RESERVATION_CONFLICT		= R(0x10),
 	TCM_ADDRESS_OUT_OF_RANGE		= R(0x11),
 	TCM_OUT_OF_RESOURCES			= R(0x12),
+	TCM_PARAMETER_LIST_LENGTH_ERROR		= R(0x13),
 #undef R
 };
 
@@ -211,7 +214,6 @@ enum tcm_tmreq_table {
 	TMR_LUN_RESET		= 5,
 	TMR_TARGET_WARM_RESET	= 6,
 	TMR_TARGET_COLD_RESET	= 7,
-	TMR_FABRIC_TMR		= 255,
 };
 
 /* fabric independent task management response values */
@@ -592,6 +594,7 @@ struct se_dev_entry {
 };
 
 struct se_dev_attrib {
+	int		emulate_model_alias;
 	int		emulate_dpo;
 	int		emulate_fua_write;
 	int		emulate_fua_read;