kernel/linux.git/include/target/target_core_base.h, branch linux-4.3.y

target: Propigate backend read-only to core_tpg_add_lun

2015-09-25T06:17:21+00:00

This patch adds a DF_READ_ONLY flag that is used by IBLOCK to signal when a backend has been set to read-only mode, in order to propigate read-only status up to core_tpg_add_lun() for all future LUN fabric exports. With this is place, existing emulation for reporting read-only in spc_emulate_modesense() and normal transport_lookup_cmd_lun() TCM_WRITE_PROTECTED status checking just works as expected. Reported-by: Joeue Deng Reported-by: Andy Grover Signed-off-by: Nicholas Bellinger

target: Shrink struct se_cmd by rearranging fields

2015-07-31T07:10:33+00:00

On x86-64, these changes reduce the struct size from 528 bytes to 496 bytes. We save a cacheline and get under 512 bytes for better packing. Signed-off-by: Roland Dreier Acked-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger

target: Remove cmd->se_ordered_id (unused except debug log lines)

2015-07-31T07:06:12+00:00

For every command, we set se_ordered_id by doing atomic_inc_return on dev->dev_ordered_id for the corresponding device. However, the only places this value gets used are in pr_debug() calls, which doesn't seem worth an extra atomic op per IO. Signed-off-by: Roland Dreier Reviewed-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger

target: remove initiatorname field in se_acl_lun

2015-07-31T05:57:30+00:00

From: Chris Zankel The initiatorname field in se_acl_lun is only a copy of the same field in se_node_acl, so remove it and use the version in se_node_acl where needed (it's actually only used for pr_debug) Signed-off-by: Chris Zankel Signed-off-by: Spencer Baugh Reviewed-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger

target: remove unused lun_flags field from se_lun

2015-07-31T05:56:06+00:00

The lun_flags field is not used, so drop it. Signed-off-by: Chris Zankel Signed-off-by: Spencer Baugh Reviewed-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger

target: Use struct t10_pi_tuple

2015-07-06T21:31:50+00:00

Its not a good idea to keep target specific definition of the same t10-pi tuple. (Fix v4.2-rc1 patch fuzz - nab) Signed-off-by: Sagi Grimberg Signed-off-by: Nicholas Bellinger

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

2015-07-04T21:13:43+00:00

Pull SCSI target updates from Nicholas Bellinger: "It's been a busy development cycle for target-core in a number of different areas. The fabric API usage for se_node_acl allocation is now within target-core code, dropping the external API callers for all fabric drivers tree-wide. There is a new conversion to RCU hlists for se_node_acl and se_portal_group LUN mappings, that turns fast-past LUN lookup into a completely lockless code-path. It also removes the original hard-coded limitation of 256 LUNs per fabric endpoint. The configfs attributes for backends can now be shared between core and driver code, allowing existing drivers to use common code while still allowing flexibility for new backend provided attributes. The highlights include: - Merge sbc_verify_dif_* into common code (sagi) - Remove iscsi-target support for obsolete IFMarker/OFMarker (Christophe Vu-Brugier) - Add bidi support in target/user backend (ilias + vangelis + agover) - Move se_node_acl allocation into target-core code (hch) - Add crc_t10dif_update common helper (akinobu + mkp) - Handle target-core odd SGL mapping for data transfer memory (akinobu) - Move transport ID handling into target-core (hch) - Move task tag into struct se_cmd + support 64-bit tags (bart) - Convert se_node_acl->device_list[] to RCU hlist (nab + hch + paulmck) - Convert se_portal_group->tpg_lun_list[] to RCU hlist (nab + hch + paulmck) - Simplify target backend driver registration (hch) - Consolidate + simplify target backend attribute implementations (hch + nab) - Subsume se_port + t10_alua_tg_pt_gp_member into se_lun (hch) - Drop lun_sep_lock for se_lun->lun_se_dev RCU usage (hch + nab) - Drop unnecessary core_tpg_register TFO parameter (nab) - Use 64-bit LUNs tree-wide (hannes) - Drop left-over TARGET_MAX_LUNS_PER_TRANSPORT limit (hannes)" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (76 commits) target: Bump core version to v5.0 target: remove target_core_configfs.h target: remove unused TARGET_CORE_CONFIG_ROOT define target: consolidate version defines target: implement WRITE_SAME with UNMAP bit using ->execute_unmap target: simplify UNMAP handling target: replace se_cmd->execute_rw with a protocol_data field target/user: Fix inconsistent kmap_atomic/kunmap_atomic target: Send UA when changing LUN inventory target: Send UA upon LUN RESET tmr completion target: Send UA on ALUA target port group change target: Convert se_lun->lun_deve_lock to normal spinlock target: use 'se_dev_entry' when allocating UAs target: Remove 'ua_nacl' pointer from se_ua structure target_core_alua: Correct UA handling when switching states xen-scsiback: Fix compile warning for 64-bit LUN target: Remove TARGET_MAX_LUNS_PER_TRANSPORT target: use 64-bit LUNs target: Drop duplicate + unused se_dev_check_wce target: Drop unnecessary core_tpg_register TFO parameter ...

target: Bump core version to v5.0

2015-06-23T07:45:14+00:00

Signed-off-by: Nicholas Bellinger

target: consolidate version defines

2015-06-23T07:43:48+00:00

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

target: replace se_cmd->execute_rw with a protocol_data field

2015-06-23T07:43:42+00:00

Instead of leaking this SBC read/write implementation detail just add an opaqueue protocol specific pointer to struct se_cmd that we can assign the sbc_ops vector to. Signed-off-by: Christoph Hellwig Reviewed-by: Andy Grover Signed-off-by: Nicholas Bellinger