diff options
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_transport.c | 383 |
1 files changed, 148 insertions, 235 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index b6708d1b69b8..6ef44c9db381 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -2628,13 +2628,155 @@ void transport_err_sector_info(unsigned char *buffer, sector_t bad_sector) put_unaligned_be64(bad_sector, &buffer[12]); } +struct sense_info { + u8 key; + u8 asc; + u8 ascq; + bool add_sector_info; +}; + +static const struct sense_info sense_info_table[] = { + [TCM_NO_SENSE] = { + .key = NOT_READY + }, + [TCM_NON_EXISTENT_LUN] = { + .key = ILLEGAL_REQUEST, + .asc = 0x25 /* LOGICAL UNIT NOT SUPPORTED */ + }, + [TCM_UNSUPPORTED_SCSI_OPCODE] = { + .key = ILLEGAL_REQUEST, + .asc = 0x20, /* INVALID COMMAND OPERATION CODE */ + }, + [TCM_SECTOR_COUNT_TOO_MANY] = { + .key = ILLEGAL_REQUEST, + .asc = 0x20, /* INVALID COMMAND OPERATION CODE */ + }, + [TCM_UNKNOWN_MODE_PAGE] = { + .key = ILLEGAL_REQUEST, + .asc = 0x24, /* INVALID FIELD IN CDB */ + }, + [TCM_CHECK_CONDITION_ABORT_CMD] = { + .key = ABORTED_COMMAND, + .asc = 0x29, /* BUS DEVICE RESET FUNCTION OCCURRED */ + .ascq = 0x03, + }, + [TCM_INCORRECT_AMOUNT_OF_DATA] = { + .key = ABORTED_COMMAND, + .asc = 0x0c, /* WRITE ERROR */ + .ascq = 0x0d, /* NOT ENOUGH UNSOLICITED DATA */ + }, + [TCM_INVALID_CDB_FIELD] = { + .key = ILLEGAL_REQUEST, + .asc = 0x24, /* INVALID FIELD IN CDB */ + }, + [TCM_INVALID_PARAMETER_LIST] = { + .key = ILLEGAL_REQUEST, + .asc = 0x26, /* INVALID FIELD IN PARAMETER LIST */ + }, + [TCM_PARAMETER_LIST_LENGTH_ERROR] = { + .key = ILLEGAL_REQUEST, + .asc = 0x1a, /* PARAMETER LIST LENGTH ERROR */ + }, + [TCM_UNEXPECTED_UNSOLICITED_DATA] = { + .key = ILLEGAL_REQUEST, + .asc = 0x0c, /* WRITE ERROR */ + .ascq = 0x0c, /* UNEXPECTED_UNSOLICITED_DATA */ + }, + [TCM_SERVICE_CRC_ERROR] = { + .key = ABORTED_COMMAND, + .asc = 0x47, /* PROTOCOL SERVICE CRC ERROR */ + .ascq = 0x05, /* N/A */ + }, + [TCM_SNACK_REJECTED] = { + .key = ABORTED_COMMAND, + .asc = 0x11, /* READ ERROR */ + .ascq = 0x13, /* FAILED RETRANSMISSION REQUEST */ + }, + [TCM_WRITE_PROTECTED] = { + .key = DATA_PROTECT, + .asc = 0x27, /* WRITE PROTECTED */ + }, + [TCM_ADDRESS_OUT_OF_RANGE] = { + .key = ILLEGAL_REQUEST, + .asc = 0x21, /* LOGICAL BLOCK ADDRESS OUT OF RANGE */ + }, + [TCM_CHECK_CONDITION_UNIT_ATTENTION] = { + .key = UNIT_ATTENTION, + }, + [TCM_CHECK_CONDITION_NOT_READY] = { + .key = NOT_READY, + }, + [TCM_MISCOMPARE_VERIFY] = { + .key = MISCOMPARE, + .asc = 0x1d, /* MISCOMPARE DURING VERIFY OPERATION */ + .ascq = 0x00, + }, + [TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED] = { + .key = ILLEGAL_REQUEST, + .asc = 0x10, + .ascq = 0x01, /* LOGICAL BLOCK GUARD CHECK FAILED */ + .add_sector_info = true, + }, + [TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED] = { + .key = ILLEGAL_REQUEST, + .asc = 0x10, + .ascq = 0x02, /* LOGICAL BLOCK APPLICATION TAG CHECK FAILED */ + .add_sector_info = true, + }, + [TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED] = { + .key = ILLEGAL_REQUEST, + .asc = 0x10, + .ascq = 0x03, /* LOGICAL BLOCK REFERENCE TAG CHECK FAILED */ + .add_sector_info = true, + }, + [TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE] = { + /* + * Returning ILLEGAL REQUEST would cause immediate IO errors on + * Solaris initiators. Returning NOT READY instead means the + * operations will be retried a finite number of times and we + * can survive intermittent errors. + */ + .key = NOT_READY, + .asc = 0x08, /* LOGICAL UNIT COMMUNICATION FAILURE */ + }, +}; + +static void translate_sense_reason(struct se_cmd *cmd, sense_reason_t reason) +{ + const struct sense_info *si; + u8 *buffer = cmd->sense_buffer; + int r = (__force int)reason; + u8 asc, ascq; + + if (r < ARRAY_SIZE(sense_info_table) && sense_info_table[r].key) + si = &sense_info_table[r]; + else + si = &sense_info_table[(__force int) + TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE]; + + buffer[SPC_SENSE_KEY_OFFSET] = si->key; + if (reason == TCM_CHECK_CONDITION_UNIT_ATTENTION) { + core_scsi3_ua_for_check_condition(cmd, &asc, &ascq); + WARN_ON_ONCE(asc == 0); + } else if (si->asc == 0) { + WARN_ON_ONCE(cmd->scsi_asc == 0); + asc = cmd->scsi_asc; + ascq = cmd->scsi_ascq; + } else { + asc = si->asc; + ascq = si->ascq; + } + buffer[SPC_ASC_KEY_OFFSET] = asc; + buffer[SPC_ASCQ_KEY_OFFSET] = ascq; + if (si->add_sector_info) + transport_err_sector_info(cmd->sense_buffer, cmd->bad_sector); +} + int transport_send_check_condition_and_sense(struct se_cmd *cmd, sense_reason_t reason, int from_transport) { - unsigned char *buffer = cmd->sense_buffer; unsigned long flags; - u8 asc = 0, ascq = 0; spin_lock_irqsave(&cmd->t_state_lock, flags); if (cmd->se_cmd_flags & SCF_SENT_CHECK_CONDITION) { @@ -2644,242 +2786,13 @@ transport_send_check_condition_and_sense(struct se_cmd *cmd, cmd->se_cmd_flags |= SCF_SENT_CHECK_CONDITION; spin_unlock_irqrestore(&cmd->t_state_lock, flags); - if (!reason && from_transport) - goto after_reason; - - if (!from_transport) + if (!from_transport) { cmd->se_cmd_flags |= SCF_EMULATED_TASK_SENSE; - - /* - * Actual SENSE DATA, see SPC-3 7.23.2 SPC_SENSE_KEY_OFFSET uses - * SENSE KEY values from include/scsi/scsi.h - */ - switch (reason) { - case TCM_NO_SENSE: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* Not Ready */ - buffer[SPC_SENSE_KEY_OFFSET] = NOT_READY; - /* NO ADDITIONAL SENSE INFORMATION */ - buffer[SPC_ASC_KEY_OFFSET] = 0; - buffer[SPC_ASCQ_KEY_OFFSET] = 0; - break; - case TCM_NON_EXISTENT_LUN: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ILLEGAL REQUEST */ - buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; - /* LOGICAL UNIT NOT SUPPORTED */ - buffer[SPC_ASC_KEY_OFFSET] = 0x25; - break; - case TCM_UNSUPPORTED_SCSI_OPCODE: - case TCM_SECTOR_COUNT_TOO_MANY: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ILLEGAL REQUEST */ - buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; - /* INVALID COMMAND OPERATION CODE */ - buffer[SPC_ASC_KEY_OFFSET] = 0x20; - break; - case TCM_UNKNOWN_MODE_PAGE: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ILLEGAL REQUEST */ - buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; - /* INVALID FIELD IN CDB */ - buffer[SPC_ASC_KEY_OFFSET] = 0x24; - break; - case TCM_CHECK_CONDITION_ABORT_CMD: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ABORTED COMMAND */ - buffer[SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND; - /* BUS DEVICE RESET FUNCTION OCCURRED */ - buffer[SPC_ASC_KEY_OFFSET] = 0x29; - buffer[SPC_ASCQ_KEY_OFFSET] = 0x03; - break; - case TCM_INCORRECT_AMOUNT_OF_DATA: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ABORTED COMMAND */ - buffer[SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND; - /* WRITE ERROR */ - buffer[SPC_ASC_KEY_OFFSET] = 0x0c; - /* NOT ENOUGH UNSOLICITED DATA */ - buffer[SPC_ASCQ_KEY_OFFSET] = 0x0d; - break; - case TCM_INVALID_CDB_FIELD: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ILLEGAL REQUEST */ - buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; - /* INVALID FIELD IN CDB */ - buffer[SPC_ASC_KEY_OFFSET] = 0x24; - break; - case TCM_INVALID_PARAMETER_LIST: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ILLEGAL REQUEST */ - buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; - /* INVALID FIELD IN PARAMETER LIST */ - buffer[SPC_ASC_KEY_OFFSET] = 0x26; - break; - case TCM_PARAMETER_LIST_LENGTH_ERROR: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ILLEGAL REQUEST */ - buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; - /* PARAMETER LIST LENGTH ERROR */ - buffer[SPC_ASC_KEY_OFFSET] = 0x1a; - break; - case TCM_UNEXPECTED_UNSOLICITED_DATA: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ABORTED COMMAND */ - buffer[SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND; - /* WRITE ERROR */ - buffer[SPC_ASC_KEY_OFFSET] = 0x0c; - /* UNEXPECTED_UNSOLICITED_DATA */ - buffer[SPC_ASCQ_KEY_OFFSET] = 0x0c; - break; - case TCM_SERVICE_CRC_ERROR: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ABORTED COMMAND */ - buffer[SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND; - /* PROTOCOL SERVICE CRC ERROR */ - buffer[SPC_ASC_KEY_OFFSET] = 0x47; - /* N/A */ - buffer[SPC_ASCQ_KEY_OFFSET] = 0x05; - break; - case TCM_SNACK_REJECTED: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ABORTED COMMAND */ - buffer[SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND; - /* READ ERROR */ - buffer[SPC_ASC_KEY_OFFSET] = 0x11; - /* FAILED RETRANSMISSION REQUEST */ - buffer[SPC_ASCQ_KEY_OFFSET] = 0x13; - break; - case TCM_WRITE_PROTECTED: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* DATA PROTECT */ - buffer[SPC_SENSE_KEY_OFFSET] = DATA_PROTECT; - /* WRITE PROTECTED */ - buffer[SPC_ASC_KEY_OFFSET] = 0x27; - break; - case TCM_ADDRESS_OUT_OF_RANGE: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ILLEGAL REQUEST */ - buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; - /* LOGICAL BLOCK ADDRESS OUT OF RANGE */ - buffer[SPC_ASC_KEY_OFFSET] = 0x21; - break; - case TCM_CHECK_CONDITION_UNIT_ATTENTION: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* UNIT ATTENTION */ - buffer[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION; - core_scsi3_ua_for_check_condition(cmd, &asc, &ascq); - buffer[SPC_ASC_KEY_OFFSET] = asc; - buffer[SPC_ASCQ_KEY_OFFSET] = ascq; - break; - case TCM_CHECK_CONDITION_NOT_READY: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* Not Ready */ - buffer[SPC_SENSE_KEY_OFFSET] = NOT_READY; - buffer[SPC_ASC_KEY_OFFSET] = cmd->scsi_asc; - buffer[SPC_ASCQ_KEY_OFFSET] = cmd->scsi_ascq; - break; - case TCM_MISCOMPARE_VERIFY: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - buffer[SPC_SENSE_KEY_OFFSET] = MISCOMPARE; - /* MISCOMPARE DURING VERIFY OPERATION */ - buffer[SPC_ASC_KEY_OFFSET] = 0x1d; - buffer[SPC_ASCQ_KEY_OFFSET] = 0x00; - break; - case TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ILLEGAL REQUEST */ - buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; - /* LOGICAL BLOCK GUARD CHECK FAILED */ - buffer[SPC_ASC_KEY_OFFSET] = 0x10; - buffer[SPC_ASCQ_KEY_OFFSET] = 0x01; - transport_err_sector_info(buffer, cmd->bad_sector); - break; - case TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ILLEGAL REQUEST */ - buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; - /* LOGICAL BLOCK APPLICATION TAG CHECK FAILED */ - buffer[SPC_ASC_KEY_OFFSET] = 0x10; - buffer[SPC_ASCQ_KEY_OFFSET] = 0x02; - transport_err_sector_info(buffer, cmd->bad_sector); - break; - case TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* ILLEGAL REQUEST */ - buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; - /* LOGICAL BLOCK REFERENCE TAG CHECK FAILED */ - buffer[SPC_ASC_KEY_OFFSET] = 0x10; - buffer[SPC_ASCQ_KEY_OFFSET] = 0x03; - transport_err_sector_info(buffer, cmd->bad_sector); - break; - case TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE: - default: - /* CURRENT ERROR */ - buffer[0] = 0x70; - buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; - /* - * Returning ILLEGAL REQUEST would cause immediate IO errors on - * Solaris initiators. Returning NOT READY instead means the - * operations will be retried a finite number of times and we - * can survive intermittent errors. - */ - buffer[SPC_SENSE_KEY_OFFSET] = NOT_READY; - /* LOGICAL UNIT COMMUNICATION FAILURE */ - buffer[SPC_ASC_KEY_OFFSET] = 0x08; - break; + translate_sense_reason(cmd, reason); + cmd->scsi_status = SAM_STAT_CHECK_CONDITION; + cmd->scsi_sense_length = TRANSPORT_SENSE_BUFFER; } - /* - * This code uses linux/include/scsi/scsi.h SAM status codes! - */ - cmd->scsi_status = SAM_STAT_CHECK_CONDITION; - /* - * Automatically padded, this value is encoded in the fabric's - * data_length response PDU containing the SCSI defined sense data. - */ - cmd->scsi_sense_length = TRANSPORT_SENSE_BUFFER; -after_reason: trace_target_cmd_complete(cmd); return cmd->se_tfo->queue_status(cmd); } |