diff options
Diffstat (limited to 'drivers/target/target_core_spc.c')
| -rw-r--r-- | drivers/target/target_core_spc.c | 934 |
1 files changed, 927 insertions, 7 deletions
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 7cca3b15472b..fcc7b10a7ae3 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -227,7 +227,7 @@ spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) struct t10_alua_tg_pt_gp *tg_pt_gp; unsigned char *prod = &dev->t10_wwn.model[0]; u32 prod_len; - u32 unit_serial_len, off = 0; + u32 off = 0; u16 len = 0, id_len; off = 4; @@ -272,13 +272,9 @@ check_t10_vend_desc: prod_len += strlen(prod); prod_len++; /* For : */ - if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { - unit_serial_len = strlen(&dev->t10_wwn.unit_serial[0]); - unit_serial_len++; /* For NULL Terminator */ - + if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) id_len += sprintf(&buf[off+12], "%s:%s", prod, &dev->t10_wwn.unit_serial[0]); - } buf[off] = 0x2; /* ASCII */ buf[off+1] = 0x1; /* T10 Vendor ID */ buf[off+2] = 0x0; @@ -519,6 +515,7 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) struct se_device *dev = cmd->se_dev; u32 mtl = 0; int have_tp = 0, opt, min; + u32 io_max_blocks; /* * Following spc3r22 section 6.5.3 Block Limits VPD page, when @@ -557,7 +554,10 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) mtl = (cmd->se_tfo->max_data_sg_nents * PAGE_SIZE) / dev->dev_attrib.block_size; } - put_unaligned_be32(min_not_zero(mtl, dev->dev_attrib.hw_max_sectors), &buf[8]); + io_max_blocks = mult_frac(dev->dev_attrib.hw_max_sectors, + dev->dev_attrib.hw_block_size, + dev->dev_attrib.block_size); + put_unaligned_be32(min_not_zero(mtl, io_max_blocks), &buf[8]); /* * Set OPTIMAL TRANSFER LENGTH @@ -1314,6 +1314,922 @@ spc_emulate_testunitready(struct se_cmd *cmd) return 0; } +static void set_dpofua_usage_bits(u8 *usage_bits, struct se_device *dev) +{ + if (!target_check_fua(dev)) + usage_bits[1] &= ~0x18; + else + usage_bits[1] |= 0x18; +} + +static void set_dpofua_usage_bits32(u8 *usage_bits, struct se_device *dev) +{ + if (!target_check_fua(dev)) + usage_bits[10] &= ~0x18; + else + usage_bits[10] |= 0x18; +} + +static struct target_opcode_descriptor tcm_opcode_read6 = { + .support = SCSI_SUPPORT_FULL, + .opcode = READ_6, + .cdb_size = 6, + .usage_bits = {READ_6, 0x1f, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_read10 = { + .support = SCSI_SUPPORT_FULL, + .opcode = READ_10, + .cdb_size = 10, + .usage_bits = {READ_10, 0xf8, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .update_usage_bits = set_dpofua_usage_bits, +}; + +static struct target_opcode_descriptor tcm_opcode_read12 = { + .support = SCSI_SUPPORT_FULL, + .opcode = READ_12, + .cdb_size = 12, + .usage_bits = {READ_12, 0xf8, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK}, + .update_usage_bits = set_dpofua_usage_bits, +}; + +static struct target_opcode_descriptor tcm_opcode_read16 = { + .support = SCSI_SUPPORT_FULL, + .opcode = READ_16, + .cdb_size = 16, + .usage_bits = {READ_16, 0xf8, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK}, + .update_usage_bits = set_dpofua_usage_bits, +}; + +static struct target_opcode_descriptor tcm_opcode_write6 = { + .support = SCSI_SUPPORT_FULL, + .opcode = WRITE_6, + .cdb_size = 6, + .usage_bits = {WRITE_6, 0x1f, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_write10 = { + .support = SCSI_SUPPORT_FULL, + .opcode = WRITE_10, + .cdb_size = 10, + .usage_bits = {WRITE_10, 0xf8, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .update_usage_bits = set_dpofua_usage_bits, +}; + +static struct target_opcode_descriptor tcm_opcode_write_verify10 = { + .support = SCSI_SUPPORT_FULL, + .opcode = WRITE_VERIFY, + .cdb_size = 10, + .usage_bits = {WRITE_VERIFY, 0xf0, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .update_usage_bits = set_dpofua_usage_bits, +}; + +static struct target_opcode_descriptor tcm_opcode_write12 = { + .support = SCSI_SUPPORT_FULL, + .opcode = WRITE_12, + .cdb_size = 12, + .usage_bits = {WRITE_12, 0xf8, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK}, + .update_usage_bits = set_dpofua_usage_bits, +}; + +static struct target_opcode_descriptor tcm_opcode_write16 = { + .support = SCSI_SUPPORT_FULL, + .opcode = WRITE_16, + .cdb_size = 16, + .usage_bits = {WRITE_16, 0xf8, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK}, + .update_usage_bits = set_dpofua_usage_bits, +}; + +static struct target_opcode_descriptor tcm_opcode_write_verify16 = { + .support = SCSI_SUPPORT_FULL, + .opcode = WRITE_VERIFY_16, + .cdb_size = 16, + .usage_bits = {WRITE_VERIFY_16, 0xf0, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK}, + .update_usage_bits = set_dpofua_usage_bits, +}; + +static bool tcm_is_ws_enabled(struct se_cmd *cmd) +{ + struct sbc_ops *ops = cmd->protocol_data; + struct se_device *dev = cmd->se_dev; + + return (dev->dev_attrib.emulate_tpws && !!ops->execute_unmap) || + !!ops->execute_write_same; +} + +static struct target_opcode_descriptor tcm_opcode_write_same32 = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = VARIABLE_LENGTH_CMD, + .service_action = WRITE_SAME_32, + .cdb_size = 32, + .usage_bits = {VARIABLE_LENGTH_CMD, SCSI_CONTROL_MASK, 0x00, 0x00, + 0x00, 0x00, SCSI_GROUP_NUMBER_MASK, 0x18, + 0x00, WRITE_SAME_32, 0xe8, 0x00, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0xff, 0xff, 0xff, 0xff}, + .enabled = tcm_is_ws_enabled, + .update_usage_bits = set_dpofua_usage_bits32, +}; + +static bool tcm_is_caw_enabled(struct se_cmd *cmd) +{ + struct se_device *dev = cmd->se_dev; + + return dev->dev_attrib.emulate_caw; +} + +static struct target_opcode_descriptor tcm_opcode_compare_write = { + .support = SCSI_SUPPORT_FULL, + .opcode = COMPARE_AND_WRITE, + .cdb_size = 16, + .usage_bits = {COMPARE_AND_WRITE, 0x18, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0x00, 0x00, + 0x00, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK}, + .enabled = tcm_is_caw_enabled, + .update_usage_bits = set_dpofua_usage_bits, +}; + +static struct target_opcode_descriptor tcm_opcode_read_capacity = { + .support = SCSI_SUPPORT_FULL, + .opcode = READ_CAPACITY, + .cdb_size = 10, + .usage_bits = {READ_CAPACITY, 0x00, 0xff, 0xff, + 0xff, 0xff, 0x00, 0x00, + 0x01, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_read_capacity16 = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = SERVICE_ACTION_IN_16, + .service_action = SAI_READ_CAPACITY_16, + .cdb_size = 16, + .usage_bits = {SERVICE_ACTION_IN_16, SAI_READ_CAPACITY_16, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0xff, 0xff, + 0xff, 0xff, 0x00, SCSI_CONTROL_MASK}, +}; + +static bool tcm_is_rep_ref_enabled(struct se_cmd *cmd) +{ + struct se_device *dev = cmd->se_dev; + + spin_lock(&dev->t10_alua.lba_map_lock); + if (list_empty(&dev->t10_alua.lba_map_list)) { + spin_unlock(&dev->t10_alua.lba_map_lock); + return false; + } + spin_unlock(&dev->t10_alua.lba_map_lock); + return true; + +} + +static struct target_opcode_descriptor tcm_opcode_read_report_refferals = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = SERVICE_ACTION_IN_16, + .service_action = SAI_REPORT_REFERRALS, + .cdb_size = 16, + .usage_bits = {SERVICE_ACTION_IN_16, SAI_REPORT_REFERRALS, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0xff, 0xff, + 0xff, 0xff, 0x00, SCSI_CONTROL_MASK}, + .enabled = tcm_is_rep_ref_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_sync_cache = { + .support = SCSI_SUPPORT_FULL, + .opcode = SYNCHRONIZE_CACHE, + .cdb_size = 10, + .usage_bits = {SYNCHRONIZE_CACHE, 0x02, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff, + 0xff, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_sync_cache16 = { + .support = SCSI_SUPPORT_FULL, + .opcode = SYNCHRONIZE_CACHE_16, + .cdb_size = 16, + .usage_bits = {SYNCHRONIZE_CACHE_16, 0x02, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK}, +}; + +static bool tcm_is_unmap_enabled(struct se_cmd *cmd) +{ + struct sbc_ops *ops = cmd->protocol_data; + struct se_device *dev = cmd->se_dev; + + return ops->execute_unmap && dev->dev_attrib.emulate_tpu; +} + +static struct target_opcode_descriptor tcm_opcode_unmap = { + .support = SCSI_SUPPORT_FULL, + .opcode = UNMAP, + .cdb_size = 10, + .usage_bits = {UNMAP, 0x00, 0x00, 0x00, + 0x00, 0x00, SCSI_GROUP_NUMBER_MASK, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_unmap_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_write_same = { + .support = SCSI_SUPPORT_FULL, + .opcode = WRITE_SAME, + .cdb_size = 10, + .usage_bits = {WRITE_SAME, 0xe8, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_ws_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_write_same16 = { + .support = SCSI_SUPPORT_FULL, + .opcode = WRITE_SAME_16, + .cdb_size = 16, + .usage_bits = {WRITE_SAME_16, 0xe8, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK}, + .enabled = tcm_is_ws_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_verify = { + .support = SCSI_SUPPORT_FULL, + .opcode = VERIFY, + .cdb_size = 10, + .usage_bits = {VERIFY, 0x00, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, 0xff, + 0xff, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_verify16 = { + .support = SCSI_SUPPORT_FULL, + .opcode = VERIFY_16, + .cdb_size = 16, + .usage_bits = {VERIFY_16, 0x00, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_start_stop = { + .support = SCSI_SUPPORT_FULL, + .opcode = START_STOP, + .cdb_size = 6, + .usage_bits = {START_STOP, 0x01, 0x00, 0x00, + 0x01, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_mode_select = { + .support = SCSI_SUPPORT_FULL, + .opcode = MODE_SELECT, + .cdb_size = 6, + .usage_bits = {MODE_SELECT, 0x10, 0x00, 0x00, + 0xff, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_mode_select10 = { + .support = SCSI_SUPPORT_FULL, + .opcode = MODE_SELECT_10, + .cdb_size = 10, + .usage_bits = {MODE_SELECT_10, 0x10, 0x00, 0x00, + 0x00, 0x00, 0x00, 0xff, + 0xff, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_mode_sense = { + .support = SCSI_SUPPORT_FULL, + .opcode = MODE_SENSE, + .cdb_size = 6, + .usage_bits = {MODE_SENSE, 0x08, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_mode_sense10 = { + .support = SCSI_SUPPORT_FULL, + .opcode = MODE_SENSE_10, + .cdb_size = 10, + .usage_bits = {MODE_SENSE_10, 0x18, 0xff, 0xff, + 0x00, 0x00, 0x00, 0xff, + 0xff, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_pri_read_keys = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_IN, + .service_action = PRI_READ_KEYS, + .cdb_size = 10, + .usage_bits = {PERSISTENT_RESERVE_IN, PRI_READ_KEYS, 0x00, 0x00, + 0x00, 0x00, 0x00, 0xff, + 0xff, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_pri_read_resrv = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_IN, + .service_action = PRI_READ_RESERVATION, + .cdb_size = 10, + .usage_bits = {PERSISTENT_RESERVE_IN, PRI_READ_RESERVATION, 0x00, 0x00, + 0x00, 0x00, 0x00, 0xff, + 0xff, SCSI_CONTROL_MASK}, +}; + +static bool tcm_is_pr_enabled(struct se_cmd *cmd) +{ + struct se_device *dev = cmd->se_dev; + + return dev->dev_attrib.emulate_pr; +} + +static struct target_opcode_descriptor tcm_opcode_pri_read_caps = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_IN, + .service_action = PRI_REPORT_CAPABILITIES, + .cdb_size = 10, + .usage_bits = {PERSISTENT_RESERVE_IN, PRI_REPORT_CAPABILITIES, 0x00, 0x00, + 0x00, 0x00, 0x00, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_pr_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_pri_read_full_status = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_IN, + .service_action = PRI_READ_FULL_STATUS, + .cdb_size = 10, + .usage_bits = {PERSISTENT_RESERVE_IN, PRI_READ_FULL_STATUS, 0x00, 0x00, + 0x00, 0x00, 0x00, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_pr_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_pro_register = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_OUT, + .service_action = PRO_REGISTER, + .cdb_size = 10, + .usage_bits = {PERSISTENT_RESERVE_OUT, PRO_REGISTER, 0xff, 0x00, + 0x00, 0xff, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_pr_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_pro_reserve = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_OUT, + .service_action = PRO_RESERVE, + .cdb_size = 10, + .usage_bits = {PERSISTENT_RESERVE_OUT, PRO_RESERVE, 0xff, 0x00, + 0x00, 0xff, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_pr_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_pro_release = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_OUT, + .service_action = PRO_RELEASE, + .cdb_size = 10, + .usage_bits = {PERSISTENT_RESERVE_OUT, PRO_RELEASE, 0xff, 0x00, + 0x00, 0xff, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_pr_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_pro_clear = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_OUT, + .service_action = PRO_CLEAR, + .cdb_size = 10, + .usage_bits = {PERSISTENT_RESERVE_OUT, PRO_CLEAR, 0xff, 0x00, + 0x00, 0xff, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_pr_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_pro_preempt = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_OUT, + .service_action = PRO_PREEMPT, + .cdb_size = 10, + .usage_bits = {PERSISTENT_RESERVE_OUT, PRO_PREEMPT, 0xff, 0x00, + 0x00, 0xff, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_pr_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_pro_preempt_abort = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_OUT, + .service_action = PRO_PREEMPT_AND_ABORT, + .cdb_size = 10, + .usage_bits = {PERSISTENT_RESERVE_OUT, PRO_PREEMPT_AND_ABORT, 0xff, 0x00, + 0x00, 0xff, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_pr_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_pro_reg_ign_exist = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_OUT, + .service_action = PRO_REGISTER_AND_IGNORE_EXISTING_KEY, + .cdb_size = 10, + .usage_bits = { + PERSISTENT_RESERVE_OUT, PRO_REGISTER_AND_IGNORE_EXISTING_KEY, + 0xff, 0x00, + 0x00, 0xff, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_pr_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_pro_register_move = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = PERSISTENT_RESERVE_OUT, + .service_action = PRO_REGISTER_AND_MOVE, + .cdb_size = 10, + .usage_bits = {PERSISTENT_RESERVE_OUT, PRO_REGISTER_AND_MOVE, 0xff, 0x00, + 0x00, 0xff, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_pr_enabled, +}; + +static bool tcm_is_scsi2_reservations_enabled(struct se_cmd *cmd) +{ + struct se_device *dev = cmd->se_dev; + + return dev->dev_attrib.emulate_pr; +} + +static struct target_opcode_descriptor tcm_opcode_release = { + .support = SCSI_SUPPORT_FULL, + .opcode = RELEASE, + .cdb_size = 6, + .usage_bits = {RELEASE, 0x00, 0x00, 0x00, + 0x00, SCSI_CONTROL_MASK}, + .enabled = tcm_is_scsi2_reservations_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_release10 = { + .support = SCSI_SUPPORT_FULL, + .opcode = RELEASE_10, + .cdb_size = 10, + .usage_bits = {RELEASE_10, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_scsi2_reservations_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_reserve = { + .support = SCSI_SUPPORT_FULL, + .opcode = RESERVE, + .cdb_size = 6, + .usage_bits = {RESERVE, 0x00, 0x00, 0x00, + 0x00, SCSI_CONTROL_MASK}, + .enabled = tcm_is_scsi2_reservations_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_reserve10 = { + .support = SCSI_SUPPORT_FULL, + .opcode = RESERVE_10, + .cdb_size = 10, + .usage_bits = {RESERVE_10, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0xff, + 0xff, SCSI_CONTROL_MASK}, + .enabled = tcm_is_scsi2_reservations_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_request_sense = { + .support = SCSI_SUPPORT_FULL, + .opcode = REQUEST_SENSE, + .cdb_size = 6, + .usage_bits = {REQUEST_SENSE, 0x00, 0x00, 0x00, + 0xff, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_inquiry = { + .support = SCSI_SUPPORT_FULL, + .opcode = INQUIRY, + .cdb_size = 6, + .usage_bits = {INQUIRY, 0x01, 0xff, 0xff, + 0xff, SCSI_CONTROL_MASK}, +}; + +static bool tcm_is_3pc_enabled(struct se_cmd *cmd) +{ + struct se_device *dev = cmd->se_dev; + + return dev->dev_attrib.emulate_3pc; +} + +static struct target_opcode_descriptor tcm_opcode_extended_copy_lid1 = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = EXTENDED_COPY, + .cdb_size = 16, + .usage_bits = {EXTENDED_COPY, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0xff, 0xff, + 0xff, 0xff, 0x00, SCSI_CONTROL_MASK}, + .enabled = tcm_is_3pc_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_rcv_copy_res_op_params = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = RECEIVE_COPY_RESULTS, + .service_action = RCR_SA_OPERATING_PARAMETERS, + .cdb_size = 16, + .usage_bits = {RECEIVE_COPY_RESULTS, RCR_SA_OPERATING_PARAMETERS, + 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0xff, 0xff, + 0xff, 0xff, 0x00, SCSI_CONTROL_MASK}, + .enabled = tcm_is_3pc_enabled, +}; + +static struct target_opcode_descriptor tcm_opcode_report_luns = { + .support = SCSI_SUPPORT_FULL, + .opcode = REPORT_LUNS, + .cdb_size = 12, + .usage_bits = {REPORT_LUNS, 0x00, 0xff, 0x00, + 0x00, 0x00, 0xff, 0xff, + 0xff, 0xff, 0x00, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_test_unit_ready = { + .support = SCSI_SUPPORT_FULL, + .opcode = TEST_UNIT_READY, + .cdb_size = 6, + .usage_bits = {TEST_UNIT_READY, 0x00, 0x00, 0x00, + 0x00, SCSI_CONTROL_MASK}, +}; + +static struct target_opcode_descriptor tcm_opcode_report_target_pgs = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = MAINTENANCE_IN, + .service_action = MI_REPORT_TARGET_PGS, + .cdb_size = 12, + .usage_bits = {MAINTENANCE_IN, 0xE0 | MI_REPORT_TARGET_PGS, 0x00, 0x00, + 0x00, 0x00, 0xff, 0xff, + 0xff, 0xff, 0x00, SCSI_CONTROL_MASK}, +}; + + +static bool spc_rsoc_enabled(struct se_cmd *cmd) +{ + struct se_device *dev = cmd->se_dev; + + return dev->dev_attrib.emulate_rsoc; +} + +static struct target_opcode_descriptor tcm_opcode_report_supp_opcodes = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = MAINTENANCE_IN, + .service_action = MI_REPORT_SUPPORTED_OPERATION_CODES, + .cdb_size = 12, + .usage_bits = {MAINTENANCE_IN, MI_REPORT_SUPPORTED_OPERATION_CODES, + 0x87, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0x00, SCSI_CONTROL_MASK}, + .enabled = spc_rsoc_enabled, +}; + +static bool tcm_is_set_tpg_enabled(struct se_cmd *cmd) +{ + struct t10_alua_tg_pt_gp *l_tg_pt_gp; + struct se_lun *l_lun = cmd->se_lun; + + rcu_read_lock(); + l_tg_pt_gp = rcu_dereference(l_lun->lun_tg_pt_gp); + if (!l_tg_pt_gp) { + rcu_read_unlock(); + return false; + } + if (!(l_tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA)) { + rcu_read_unlock(); + return false; + } + rcu_read_unlock(); + + return true; +} + +static struct target_opcode_descriptor tcm_opcode_set_tpg = { + .support = SCSI_SUPPORT_FULL, + .serv_action_valid = 1, + .opcode = MAINTENANCE_OUT, + .service_action = MO_SET_TARGET_PGS, + .cdb_size = 12, + .usage_bits = {MAINTENANCE_OUT, MO_SET_TARGET_PGS, 0x00, 0x00, + 0x00, 0x00, 0xff, 0xff, + 0xff, 0xff, 0x00, SCSI_CONTROL_MASK}, + .enabled = tcm_is_set_tpg_enabled, +}; + +static struct target_opcode_descriptor *tcm_supported_opcodes[] = { + &tcm_opcode_read6, + &tcm_opcode_read10, + &tcm_opcode_read12, + &tcm_opcode_read16, + &tcm_opcode_write6, + &tcm_opcode_write10, + &tcm_opcode_write_verify10, + &tcm_opcode_write12, + &tcm_opcode_write16, + &tcm_opcode_write_verify16, + &tcm_opcode_write_same32, + &tcm_opcode_compare_write, + &tcm_opcode_read_capacity, + &tcm_opcode_read_capacity16, + &tcm_opcode_read_report_refferals, + &tcm_opcode_sync_cache, + &tcm_opcode_sync_cache16, + &tcm_opcode_unmap, + &tcm_opcode_write_same, + &tcm_opcode_write_same16, + &tcm_opcode_verify, + &tcm_opcode_verify16, + &tcm_opcode_start_stop, + &tcm_opcode_mode_select, + &tcm_opcode_mode_select10, + &tcm_opcode_mode_sense, + &tcm_opcode_mode_sense10, + &tcm_opcode_pri_read_keys, + &tcm_opcode_pri_read_resrv, + &tcm_opcode_pri_read_caps, + &tcm_opcode_pri_read_full_status, + &tcm_opcode_pro_register, + &tcm_opcode_pro_reserve, + &tcm_opcode_pro_release, + &tcm_opcode_pro_clear, + &tcm_opcode_pro_preempt, + &tcm_opcode_pro_preempt_abort, + &tcm_opcode_pro_reg_ign_exist, + &tcm_opcode_pro_register_move, + &tcm_opcode_release, + &tcm_opcode_release10, + &tcm_opcode_reserve, + &tcm_opcode_reserve10, + &tcm_opcode_request_sense, + &tcm_opcode_inquiry, + &tcm_opcode_extended_copy_lid1, + &tcm_opcode_rcv_copy_res_op_params, + &tcm_opcode_report_luns, + &tcm_opcode_test_unit_ready, + &tcm_opcode_report_target_pgs, + &tcm_opcode_report_supp_opcodes, + &tcm_opcode_set_tpg, +}; + +static int +spc_rsoc_encode_command_timeouts_descriptor(unsigned char *buf, u8 ctdp, + struct target_opcode_descriptor *descr) +{ + if (!ctdp) + return 0; + + put_unaligned_be16(0xa, buf); + buf[3] = descr->specific_timeout; + put_unaligned_be32(descr->nominal_timeout, &buf[4]); + put_unaligned_be32(descr->recommended_timeout, &buf[8]); + + return 12; +} + +static int +spc_rsoc_encode_command_descriptor(unsigned char *buf, u8 ctdp, + struct target_opcode_descriptor *descr) +{ + int td_size = 0; + + buf[0] = descr->opcode; + + put_unaligned_be16(descr->service_action, &buf[2]); + + buf[5] = (ctdp << 1) | descr->serv_action_valid; + put_unaligned_be16(descr->cdb_size, &buf[6]); + + td_size = spc_rsoc_encode_command_timeouts_descriptor(&buf[8], ctdp, + descr); + + return 8 + td_size; +} + +static int +spc_rsoc_encode_one_command_descriptor(unsigned char *buf, u8 ctdp, + struct target_opcode_descriptor *descr, + struct se_device *dev) +{ + int td_size = 0; + + if (!descr) { + buf[1] = (ctdp << 7) | SCSI_SUPPORT_NOT_SUPPORTED; + return 2; + } + + buf[1] = (ctdp << 7) | SCSI_SUPPORT_FULL; + put_unaligned_be16(descr->cdb_size, &buf[2]); + memcpy(&buf[4], descr->usage_bits, descr->cdb_size); + if (descr->update_usage_bits) + descr->update_usage_bits(&buf[4], dev); + + td_size = spc_rsoc_encode_command_timeouts_descriptor( + &buf[4 + descr->cdb_size], ctdp, descr); + + return 4 + descr->cdb_size + td_size; +} + +static sense_reason_t +spc_rsoc_get_descr(struct se_cmd *cmd, struct target_opcode_descriptor **opcode) +{ + struct target_opcode_descriptor *descr; + struct se_session *sess = cmd->se_sess; + unsigned char *cdb = cmd->t_task_cdb; + u8 opts = cdb[2] & 0x3; + u8 requested_opcode; + u16 requested_sa; + int i; + + requested_opcode = cdb[3]; + requested_sa = ((u16)cdb[4]) << 8 | cdb[5]; + *opcode = NULL; + + if (opts > 3) { + pr_debug("TARGET_CORE[%s]: Invalid REPORT SUPPORTED OPERATION CODES" + " with unsupported REPORTING OPTIONS %#x for 0x%08llx from %s\n", + cmd->se_tfo->fabric_name, opts, + cmd->se_lun->unpacked_lun, + sess->se_node_acl->initiatorname); + return TCM_INVALID_CDB_FIELD; + } + + for (i = 0; i < ARRAY_SIZE(tcm_supported_opcodes); i++) { + descr = tcm_supported_opcodes[i]; + if (descr->opcode != requested_opcode) + continue; + + switch (opts) { + case 0x1: + /* + * If the REQUESTED OPERATION CODE field specifies an + * operation code for which the device server implements + * service actions, then the device server shall + * terminate the command with CHECK CONDITION status, + * with the sense key set to ILLEGAL REQUEST, and the + * additional sense code set to INVALID FIELD IN CDB + */ + if (descr->serv_action_valid) + return TCM_INVALID_CDB_FIELD; + + if (!descr->enabled || descr->enabled(cmd)) + *opcode = descr; + break; + case 0x2: + /* + * If the REQUESTED OPERATION CODE field specifies an + * operation code for which the device server does not + * implement service actions, then the device server + * shall terminate the command with CHECK CONDITION + * status, with the sense key set to ILLEGAL REQUEST, + * and the additional sense code set to INVALID FIELD IN CDB. + */ + if (descr->serv_action_valid && + descr->service_action == requested_sa) { + if (!descr->enabled || descr->enabled(cmd)) + *opcode = descr; + } else if (!descr->serv_action_valid) + return TCM_INVALID_CDB_FIELD; + break; + case 0x3: + /* + * The command support data for the operation code and + * service action a specified in the REQUESTED OPERATION + * CODE field and REQUESTED SERVICE ACTION field shall + * be returned in the one_command parameter data format. + */ + if (descr->service_action == requested_sa) + if (!descr->enabled || descr->enabled(cmd)) + *opcode = descr; + break; + } + } + + return 0; +} + +static sense_reason_t +spc_emulate_report_supp_op_codes(struct se_cmd *cmd) +{ + int descr_num = ARRAY_SIZE(tcm_supported_opcodes); + struct target_opcode_descriptor *descr = NULL; + unsigned char *cdb = cmd->t_task_cdb; + u8 rctd = (cdb[2] >> 7) & 0x1; + unsigned char *buf = NULL; + int response_length = 0; + u8 opts = cdb[2] & 0x3; + unsigned char *rbuf; + sense_reason_t ret = 0; + int i; + + if (!cmd->se_dev->dev_attrib.emulate_rsoc) + return TCM_UNSUPPORTED_SCSI_OPCODE; + + rbuf = transport_kmap_data_sg(cmd); + if (cmd->data_length && !rbuf) { + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + goto out; + } + + if (opts == 0) + response_length = 4 + (8 + rctd * 12) * descr_num; + else { + ret = spc_rsoc_get_descr(cmd, &descr); + if (ret) + goto out; + + if (descr) + response_length = 4 + descr->cdb_size + rctd * 12; + else + response_length = 2; + } + + buf = kzalloc(response_length, GFP_KERNEL); + if (!buf) { + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + goto out; + } + response_length = 0; + + if (opts == 0) { + response_length += 4; + + for (i = 0; i < ARRAY_SIZE(tcm_supported_opcodes); i++) { + descr = tcm_supported_opcodes[i]; + if (descr->enabled && !descr->enabled(cmd)) + continue; + + response_length += spc_rsoc_encode_command_descriptor( + &buf[response_length], rctd, descr); + } + put_unaligned_be32(response_length - 3, buf); + } else { + response_length = spc_rsoc_encode_one_command_descriptor( + &buf[response_length], rctd, descr, + cmd->se_dev); + } + + memcpy(rbuf, buf, min_t(u32, response_length, cmd->data_length)); +out: + kfree(buf); + transport_kunmap_data_sg(cmd); + + if (!ret) + target_complete_cmd_with_length(cmd, SAM_STAT_GOOD, response_length); + return ret; +} + sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size) { @@ -1439,6 +2355,10 @@ spc_parse_cdb(struct se_cmd *cmd, unsigned int *size) cmd->execute_cmd = target_emulate_report_target_port_groups; } + if ((cdb[1] & 0x1f) == + MI_REPORT_SUPPORTED_OPERATION_CODES) + cmd->execute_cmd = + spc_emulate_report_supp_op_codes; *size = get_unaligned_be32(&cdb[6]); } else { /* |