From: Nicholas Bellinger <n...@linux-iscsi.org> Hi MKP & Co,
This -v2 series contains support for target mode DIF Type1+Type3 emulation within target core, FILEIO, and RAMDISK_MCP device backends, BIP passthrough of T10 PI within IBLOCK device backends, and DIF/DIX host support in the tcm_loop fabric driver. DIF emulation is enabled via a new 'pi_prot_type' device attribute within configfs for FILEIO + RAMDISK_MCP, which is set after initial device configuration and before target fabric LUN export occurs. For IBLOCK backends, protection support is automatically detected via struct blk_integrity at configuration time, and no additional end-user setup is required. For FILEIO backends, format of protection information is exposed via a new 'pi_prot_format' device attribute, that is used during initial configuration to format a new $FILENAME.protection file containing DIF Type1/Type3 style metadata. Also, the DIF read/write verify emulation has been made generic enough so it can be used by other backend drivers (eg: FILEIO), as well as Type4 (16-byte PI) in the near future. Here is the v1 -> v2 changelog: - 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 - 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 - 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() - 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 - Add target/iblock blk_integrity + BIP passthrough - Add target/file DIF protection init/format support - Add target/file DIF protection support to fd_execute_rw - Drop unused sg_table from rd_release_device_space (Wei) - Drop unused sg_table from rd_release_prot_space (Wei) - Drop rd_release_prot_space call from rd_free_device - Make rd_execute_rw() to u32 sectors count instead of sector_t At this point the main TODO item remaining for v3.14 code is to determine how best to propigate App/Guard/Reference Tag VERIFY failures back up into IBLOCK device backend code. MKP has an idea how to go about doing this that will be appearing as a seperate SCSI-core + IBLOCK patch. Thank you, --nab Nicholas Bellinger (17): target: Add DIF related base definitions target: Add DIF CHECK_CONDITION ASC/ASCQ exception cases target/sbc: Add DIF setup in sbc_check_prot + sbc_parse_cdb target/sbc: Add DIF TYPE1+TYPE3 read/write verify emulation target/spc: Add protection bit to standard INQUIRY output target/spc: Add protection related bits to INQUIRY EVPD=0x86 target/sbc: Add P_TYPE + PROT_EN bits to READ_CAPACITY_16 target/spc: Expose ATO bit in control mode page target/configfs: Expose protection device attributes target: Add protection SGLs to target_submit_cmd_map_sgls target/iblock: Add blk_integrity + BIP passthrough support target/file: Add DIF protection init/format support target/file: Add DIF protection support to fd_execute_rw target/rd: Refactor rd_build_device_space + rd_release_device_space target/rd: Add support for protection SGL setup + release target/rd: Add DIF protection into rd_execute_rw tcm_loop: Enable DIF/DIX modes in SCSI host LLD drivers/target/Kconfig | 2 + drivers/target/loopback/tcm_loop.c | 12 +- drivers/target/target_core_configfs.c | 12 ++ drivers/target/target_core_device.c | 89 +++++++++++ drivers/target/target_core_file.c | 256 +++++++++++++++++++++++++++++++- drivers/target/target_core_file.h | 9 ++ drivers/target/target_core_iblock.c | 91 +++++++++++- drivers/target/target_core_internal.h | 2 + drivers/target/target_core_rd.c | 252 +++++++++++++++++++++++++------ drivers/target/target_core_rd.h | 4 + drivers/target/target_core_sbc.c | 245 ++++++++++++++++++++++++++++++ drivers/target/target_core_spc.c | 27 ++++ drivers/target/target_core_transport.c | 46 +++++- drivers/vhost/scsi.c | 2 +- include/target/target_core_backend.h | 7 + include/target/target_core_base.h | 47 ++++++ include/target/target_core_fabric.h | 3 +- 17 files changed, 1052 insertions(+), 54 deletions(-) -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
