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    Subject[PATCH 15/18] libosd: SCSI/OSD Sense decoding support
    Date
    Implementation of the osd_req_decode_sense() API. Can be called by
    library users to decode what failed in command executions.

    Add SCSI_OSD_DPRINT_SENSE Kconfig variable. Possible values are:
    0 - Do not print any errors to messages file <KERN_ERR>
    1 - (Default) Print only decoded errors that are not recoverable.
    Recoverable errors are those that the target has complied with
    the request but with a warning. For example read passed end of
    object will return zeros after the last valid byte.
    2- Print all errors.

    Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
    ---
    drivers/scsi/osd/Kbuild | 6 +
    drivers/scsi/osd/osd_initiator.c | 188 +++++++++++++++++++++++++++
    include/scsi/osd_initiator.h | 49 +++++++
    include/scsi/osd_sense.h | 260 ++++++++++++++++++++++++++++++++++++++
    4 files changed, 503 insertions(+), 0 deletions(-)
    create mode 100644 include/scsi/osd_sense.h

    diff --git a/drivers/scsi/osd/Kbuild b/drivers/scsi/osd/Kbuild
    index 6fb823f..29f7ddd 100644
    --- a/drivers/scsi/osd/Kbuild
    +++ b/drivers/scsi/osd/Kbuild
    @@ -20,6 +20,12 @@ ccflags-y += -DCONFIG_SCSI_OSD_INITIATOR -DCONFIG_SCSI_OSD_INITIATOR_MODULE
    CONFIG_SCSI_OSD_ULD=m
    ccflags-y += -DCONFIG_SCSI_OSD_ULD -DCONFIG_SCSI_OSD_ULD_MODULE

    +# CONFIG_SCSI_OSD_DPRINT_SENSE =
    +# 0 - no print of errors
    +# 1 - print errors
    +# 2 - errors + warrnings
    +ccflags-y += -DCONFIG_SCSI_OSD_DPRINT_SENSE=1
    +
    # Uncomment to turn debug on
    # ccflags-y += -DCONFIG_SCSI_OSD_DEBUG

    diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c
    index 977d595..4c663d7 100644
    --- a/drivers/scsi/osd/osd_initiator.c
    +++ b/drivers/scsi/osd/osd_initiator.c
    @@ -42,6 +42,8 @@
    #include <scsi/osd_initiator.h>
    #include <scsi/osd_sec.h>
    #include <scsi/osd_attributes.h>
    +#include <scsi/osd_sense.h>
    +
    #include <scsi/scsi_device.h>

    #include "osd_debug.h"
    @@ -1334,6 +1336,192 @@ int osd_finalize_request(struct osd_request *or,
    }
    EXPORT_SYMBOL(osd_finalize_request);

    +#define OSD_SENSE_PRINT1(fmt, a...) \
    + do { \
    + if (__cur_sense_need_output) \
    + OSD_ERR(fmt, ##a); \
    + } while (0)
    +
    +#define OSD_SENSE_PRINT2(fmt, a...) OSD_SENSE_PRINT1(" " fmt, ##a)
    +
    +int osd_req_decode_sense_full(struct osd_request *or,
    + struct osd_sense_info *osi, bool silent,
    + struct osd_obj_id *bad_obj_list, int max_obj,
    + struct osd_attr *bad_attr_list, int max_attr)
    +{
    + int sense_len, original_sense_len;
    + struct osd_sense_info local_osi;
    + struct scsi_sense_descriptor_based *ssdb;
    + void *cur_descriptor;
    +#if (CONFIG_SCSI_OSD_DPRINT_SENSE == 0)
    + const bool __cur_sense_need_output = false;
    +#else
    + bool __cur_sense_need_output = !silent;
    +#endif
    +
    + if (!or->request->errors)
    + return 0;
    +
    + ssdb = or->request->sense;
    + sense_len = or->request->sense_len;
    + if ((sense_len < sizeof(*ssdb) || !ssdb->sense_key)) {
    + OSD_ERR("Block-layer returned error(%x) but sense is empty\n",
    + or->request->errors);
    + return 0;
    + }
    +
    + if ((ssdb->response_code != 0x72) && (ssdb->response_code != 0x73)) {
    + OSD_ERR("Unrecognized scsi sense: rcode=%x length=%d\n",
    + ssdb->response_code, sense_len);
    + return -EIO;
    + }
    +
    + osi = osi ? : &local_osi;
    + memset(osi, 0, sizeof(*osi));
    + osi->key = ssdb->sense_key;
    + osi->additional_code = be16_to_cpu(ssdb->additional_sense_code);
    + original_sense_len = ssdb->additional_sense_length + 8;
    +
    +#if (CONFIG_SCSI_OSD_DPRINT_SENSE == 1)
    + if (__cur_sense_need_output)
    + __cur_sense_need_output = (osi->key > scsi_sk_recovered_error);
    +#endif
    + OSD_SENSE_PRINT1("Main Sense information key=0x%x length(%d, %d) "
    + "additional_code=0x%x\n",
    + osi->key, original_sense_len, sense_len,
    + osi->additional_code);
    +
    + if (original_sense_len < sense_len)
    + sense_len = original_sense_len;
    +
    + cur_descriptor = ssdb->ssd;
    + sense_len -= sizeof(*ssdb);
    + while (sense_len > 0) {
    + struct scsi_sense_descriptor *ssd = cur_descriptor;
    + int cur_len = ssd->additional_length + 2;
    +
    + sense_len -= cur_len;
    +
    + if (sense_len < 0)
    + break; /* sense was truncated */
    +
    + switch (ssd->descriptor_type) {
    + case scsi_sense_information:
    + case scsi_sense_command_specific_information:
    + {
    + struct scsi_sense_command_specific_data_descriptor
    + *sscd = cur_descriptor;
    +
    + osi->command_info =
    + get_unaligned_be64(&sscd->information) ;
    + OSD_SENSE_PRINT2(
    + "command_specific_information 0x%llx \n",
    + _LLU(osi->command_info));
    + break;
    + }
    + case scsi_sense_key_specific:
    + {
    + struct scsi_sense_key_specific_data_descriptor
    + *ssks = cur_descriptor;
    +
    + osi->sense_info = get_unaligned_be16(&ssks->value);
    + OSD_SENSE_PRINT2(
    + "sense_key_specific_information %u"
    + "sksv_cd_bpv_bp (0x%x)\n",
    + osi->sense_info, ssks->sksv_cd_bpv_bp);
    + break;
    + }
    + case osd_sense_object_identification:
    + { /*FIXME: Keep first not last, Store in array*/
    + struct osd_sense_identification_data_descriptor
    + *osidd = cur_descriptor;
    +
    + osi->not_initiated_command_functions =
    + le32_to_cpu(osidd->not_initiated_functions);
    + osi->completed_command_functions =
    + le32_to_cpu(osidd->completed_functions);
    + osi->obj.partition = be64_to_cpu(osidd->partition_id);
    + osi->obj.id = be64_to_cpu(osidd->object_id);
    + OSD_SENSE_PRINT2(
    + "object_identification pid=0x%llx oid=0x%llx\n",
    + _LLU(osi->obj.partition), _LLU(osi->obj.id));
    + OSD_SENSE_PRINT2(
    + "not_initiated_bits(%x) "
    + "completed_command_bits(%x)\n",
    + osi->not_initiated_command_functions,
    + osi->completed_command_functions);
    + break;
    + }
    + case osd_sense_response_integrity_check:
    + {
    + struct osd_sense_response_integrity_check_descriptor
    + *osricd = cur_descriptor;
    + const int len = sizeof(osricd->integrity_check_value);
    + u8 key_dump[len*4 + 2]; /* 2nibbles+space+ASCII */
    +
    + hex_dump_to_buffer(osricd->integrity_check_value, len,
    + 32, 1, key_dump, sizeof(key_dump), true);
    + OSD_SENSE_PRINT2("response_integrity [%s]\n", key_dump);
    + }
    + case osd_sense_attribute_identification:
    + {
    + struct osd_sense_attributes_data_descriptor
    + *osadd = cur_descriptor;
    + int len = min(cur_len, sense_len);
    + int i = 0;
    + struct osd_sense_attr *pattr = osadd->sense_attrs;
    +
    + while (len < 0) {
    + u32 page = be32_to_cpu(pattr->page);
    + u32 attr = be32_to_cpu(pattr->attr);
    +
    + if (i++ == 0) {
    + osi->attr.page = page;
    + osi->attr.attr_id = attr;
    + }
    +
    + if (bad_attr_list && max_attr) {
    + bad_attr_list->page = page;
    + bad_attr_list->attr_id = attr;
    + bad_attr_list++;
    + max_attr--;
    + }
    + OSD_SENSE_PRINT2(
    + "osd_sense_attribute_identification"
    + "page=0x%x attr=0x%x\n", page, attr);
    + }
    + }
    + /*These are not legal for OSD*/
    + case scsi_sense_field_replaceable_unit:
    + OSD_SENSE_PRINT2("scsi_sense_field_replaceable_unit\n");
    + break;
    + case scsi_sense_stream_commands:
    + OSD_SENSE_PRINT2("scsi_sense_stream_commands\n");
    + break;
    + case scsi_sense_block_commands:
    + OSD_SENSE_PRINT2("scsi_sense_block_commands\n");
    + break;
    + case scsi_sense_ata_return:
    + OSD_SENSE_PRINT2("scsi_sense_ata_return\n");
    + break;
    + default:
    + if (ssd->descriptor_type <= scsi_sense_Reserved_last)
    + OSD_SENSE_PRINT2(
    + "scsi_sense Reserved descriptor (0x%x)",
    + ssd->descriptor_type);
    + else
    + OSD_SENSE_PRINT2(
    + "scsi_sense Vendor descriptor (0x%x)",
    + ssd->descriptor_type);
    + }
    +
    + cur_descriptor += cur_len;
    + }
    +
    + return (osi->key > scsi_sk_recovered_error) ? -EIO : 0;
    +}
    +EXPORT_SYMBOL(osd_req_decode_sense_full);
    +
    /*
    * Implementation of osd_sec.h API
    * TODO: Move to a separate osd_sec.c file at a later stage.
    diff --git a/include/scsi/osd_initiator.h b/include/scsi/osd_initiator.h
    index 8a0fd35..83b6976 100644
    --- a/include/scsi/osd_initiator.h
    +++ b/include/scsi/osd_initiator.h
    @@ -212,6 +212,55 @@ int osd_execute_request_async(struct osd_request *or,
    osd_req_done_fn *done, void *private);

    /**
    + * osd_req_decode_sense_full - Decode sense information after execution.
    + *
    + * @or: - osd_request to examine
    + * @osi - Recievs a more detailed error report information (optional).
    + * @silent - Do not print to dmsg (Even if enabled)
    + * @bad_obj_list - Some commands act on multiple objects. Failed objects will
    + * be recieved here (optional)
    + * @max_obj - Size of @bad_obj_list.
    + * @bad_attr_list - List of failing attributes (optional)
    + * @max_attr - Size of @bad_attr_list.
    + *
    + * After execution, sense + return code can be analyzed using this function. The
    + * return code is the final disposition on the error. So it is possible that a
    + * CHECK_CONDITION was returned from target but this will return NO_ERROR, for
    + * example on recovered errors. All parameters are optional if caller does
    + * not need any returned information.
    + * Note: This function will also dump the error to dmsg according to settings
    + * of the SCSI_OSD_DPRINT_SENSE Kconfig value. Set @silent if you know the
    + * command would routinely fail, to not spam the dmsg file.
    + */
    +struct osd_sense_info {
    + int key; /* one of enum scsi_sense_keys */
    + int additional_code ; /* enum osd_additional_sense_codes */
    + union { /* Sense specific information */
    + u16 sense_info;
    + u16 cdb_field_offset; /* scsi_invalid_field_in_cdb */
    + };
    + union { /* Command specific information */
    + u64 command_info;
    + };
    +
    + u32 not_initiated_command_functions; /* osd_command_functions_bits */
    + u32 completed_command_functions; /* osd_command_functions_bits */
    + struct osd_obj_id obj;
    + struct osd_attr attr;
    +};
    +
    +int osd_req_decode_sense_full(struct osd_request *or,
    + struct osd_sense_info *osi, bool silent,
    + struct osd_obj_id *bad_obj_list, int max_obj,
    + struct osd_attr *bad_attr_list, int max_attr);
    +
    +static inline int osd_req_decode_sense(struct osd_request *or,
    + struct osd_sense_info *osi)
    +{
    + return osd_req_decode_sense_full(or, osi, false, NULL, 0, NULL, 0);
    +}
    +
    +/**
    * osd_end_request - return osd_request to free store
    *
    * @or: osd_request to free
    diff --git a/include/scsi/osd_sense.h b/include/scsi/osd_sense.h
    new file mode 100644
    index 0000000..026d07e
    --- /dev/null
    +++ b/include/scsi/osd_sense.h
    @@ -0,0 +1,260 @@
    +/*
    + * osd_sense.h - OSD Related sense handling definitions.
    + *
    + * Copyright (C) 2008 Panasas Inc. All rights reserved.
    + *
    + * Authors:
    + * Boaz Harrosh <bharrosh@panasas.com>
    + * Benny Halevy <bhalevy@panasas.com>
    + *
    + * This program is free software; you can redistribute it and/or modify
    + * it under the terms of the GNU General Public License version 2
    + *
    + * This file contains types and constants that are defined by the protocol
    + * Note: All names and symbols are taken from the OSD standard's text.
    + */
    +#ifndef __OSD_SENSE_H__
    +#define __OSD_SENSE_H__
    +
    +#include <scsi/osd_protocol.h>
    +
    +/* SPC3r23 4.5.6 Sense key and sense code definitions table 27 */
    +enum scsi_sense_keys {
    + scsi_sk_no_sense = 0x0,
    + scsi_sk_recovered_error = 0x1,
    + scsi_sk_not_ready = 0x2,
    + scsi_sk_medium_error = 0x3,
    + scsi_sk_hardware_error = 0x4,
    + scsi_sk_illegal_request = 0x5,
    + scsi_sk_unit_attention = 0x6,
    + scsi_sk_data_protect = 0x7,
    + scsi_sk_blank_check = 0x8,
    + scsi_sk_vendor_specific = 0x9,
    + scsi_sk_copy_aborted = 0xa,
    + scsi_sk_aborted_command = 0xb,
    + scsi_sk_volume_overflow = 0xd,
    + scsi_sk_miscompare = 0xe,
    + scsi_sk_reserved = 0xf,
    +};
    +
    +/* SPC3r23 4.5.6 Sense key and sense code definitions table 28 */
    +/* Note: only those which can be returned by an OSD target. Most of
    + * these errors are taken care of by the generic scsi layer.
    + */
    +enum osd_additional_sense_codes {
    + scsi_no_additional_sense_information = 0x0000,
    + scsi_operation_in_progress = 0x0016,
    + scsi_cleaning_requested = 0x0017,
    + scsi_lunr_cause_not_reportable = 0x0400,
    + scsi_logical_unit_is_in_process_of_becoming_ready = 0x0401,
    + scsi_lunr_initializing_command_required = 0x0402,
    + scsi_lunr_manual_intervention_required = 0x0403,
    + scsi_lunr_operation_in_progress = 0x0407,
    + scsi_lunr_selftest_in_progress = 0x0409,
    + scsi_luna_asymmetric_access_state_transition = 0x040a,
    + scsi_luna_target_port_in_standby_state = 0x040b,
    + scsi_luna_target_port_in_unavailable_state = 0x040c,
    + scsi_lunr_notify_enable_spinup_required = 0x0411,
    + scsi_logical_unit_does_not_respond_to_selection = 0x0500,
    + scsi_logical_unit_communication_failure = 0x0800,
    + scsi_logical_unit_communication_timeout = 0x0801,
    + scsi_logical_unit_communication_parity_error = 0x0802,
    + scsi_error_log_overflow = 0x0a00,
    + scsi_warning = 0x0b00,
    + scsi_warning_specified_temperature_exceeded = 0x0b01,
    + scsi_warning_enclosure_degraded = 0x0b02,
    + scsi_write_error_unexpected_unsolicited_data = 0x0c0c,
    + scsi_write_error_not_enough_unsolicited_data = 0x0c0d,
    + scsi_invalid_information_unit = 0x0e00,
    + scsi_invalid_field_in_command_information_unit = 0x0e03,
    + scsi_read_error_failed_retransmission_request = 0x1113,
    + scsi_parameter_list_length_error = 0x1a00,
    + scsi_invalid_command_operation_code = 0x2000,
    + scsi_invalid_field_in_cdb = 0x2400,
    + osd_security_audit_value_frozen = 0x2404,
    + osd_security_working_key_frozen = 0x2405,
    + osd_nonce_not_unique = 0x2406,
    + osd_nonce_timestamp_out_of_range = 0x2407,
    + scsi_logical_unit_not_supported = 0x2500,
    + scsi_invalid_field_in_parameter_list = 0x2600,
    + scsi_parameter_not_supported = 0x2601,
    + scsi_parameter_value_invalid = 0x2602,
    + scsi_invalid_release_of_persistent_reservation = 0x2604,
    + osd_invalid_dataout_buffer_integrity_check_value = 0x260f,
    + scsi_not_ready_to_ready_change_medium_may_have_changed = 0x2800,
    + scsi_power_on_reset_or_bus_device_reset_occurred = 0x2900,
    + scsi_power_on_occurred = 0x2901,
    + scsi_scsi_bus_reset_occurred = 0x2902,
    + scsi_bus_device_reset_function_occurred = 0x2903,
    + scsi_device_internal_reset = 0x2904,
    + scsi_transceiver_mode_changed_to_single_ended = 0x2905,
    + scsi_transceiver_mode_changed_to_lvd = 0x2906,
    + scsi_i_t_nexus_loss_occurred = 0x2907,
    + scsi_parameters_changed = 0x2a00,
    + scsi_mode_parameters_changed = 0x2a01,
    + scsi_asymmetric_access_state_changed = 0x2a06,
    + scsi_priority_changed = 0x2a08,
    + scsi_command_sequence_error = 0x2c00,
    + scsi_previous_busy_status = 0x2c07,
    + scsi_previous_task_set_full_status = 0x2c08,
    + scsi_previous_reservation_conflict_status = 0x2c09,
    + osd_partition_or_collection_contains_user_objects = 0x2c0a,
    + scsi_commands_cleared_by_another_initiator = 0x2f00,
    + scsi_cleaning_failure = 0x3007,
    + scsi_enclosure_failure = 0x3400,
    + scsi_enclosure_services_failure = 0x3500,
    + scsi_unsupported_enclosure_function = 0x3501,
    + scsi_enclosure_services_unavailable = 0x3502,
    + scsi_enclosure_services_transfer_failure = 0x3503,
    + scsi_enclosure_services_transfer_refused = 0x3504,
    + scsi_enclosure_services_checksum_error = 0x3505,
    + scsi_rounded_parameter = 0x3700,
    + osd_read_past_end_of_user_object = 0x3b17,
    + scsi_logical_unit_has_not_self_configured_yet = 0x3e00,
    + scsi_logical_unit_failure = 0x3e01,
    + scsi_timeout_on_logical_unit = 0x3e02,
    + scsi_logical_unit_failed_selftest = 0x3e03,
    + scsi_logical_unit_unable_to_update_selftest_log = 0x3e04,
    + scsi_target_operating_conditions_have_changed = 0x3f00,
    + scsi_microcode_has_been_changed = 0x3f01,
    + scsi_inquiry_data_has_changed = 0x3f03,
    + scsi_echo_buffer_overwritten = 0x3f0f,
    + scsi_diagnostic_failure_on_component_nn_first = 0x4080,
    + scsi_diagnostic_failure_on_component_nn_last = 0x40ff,
    + scsi_message_error = 0x4300,
    + scsi_internal_target_failure = 0x4400,
    + scsi_select_or_reselect_failure = 0x4500,
    + scsi_scsi_parity_error = 0x4700,
    + scsi_data_phase_crc_error_detected = 0x4701,
    + scsi_scsi_parity_error_detected_during_st_data_phase = 0x4702,
    + scsi_asynchronous_information_protection_error_detected = 0x4704,
    + scsi_protocol_service_crc_error = 0x4705,
    + scsi_phy_test_function_in_progress = 0x4706,
    + scsi_invalid_message_error = 0x4900,
    + scsi_command_phase_error = 0x4a00,
    + scsi_data_phase_error = 0x4b00,
    + scsi_logical_unit_failed_self_configuration = 0x4c00,
    + scsi_overlapped_commands_attempted = 0x4e00,
    + osd_quota_error = 0x5507,
    + scsi_failure_prediction_threshold_exceeded = 0x5d00,
    + scsi_failure_prediction_threshold_exceeded_false = 0x5dff,
    + scsi_voltage_fault = 0x6500,
    +};
    +
    +enum scsi_descriptor_types {
    + scsi_sense_information = 0x0,
    + scsi_sense_command_specific_information = 0x1,
    + scsi_sense_key_specific = 0x2,
    + scsi_sense_field_replaceable_unit = 0x3,
    + scsi_sense_stream_commands = 0x4,
    + scsi_sense_block_commands = 0x5,
    + osd_sense_object_identification = 0x6,
    + osd_sense_response_integrity_check = 0x7,
    + osd_sense_attribute_identification = 0x8,
    + scsi_sense_ata_return = 0x9,
    +
    + scsi_sense_Reserved_first = 0x0A,
    + scsi_sense_Reserved_last = 0x7F,
    + scsi_sense_Vendor_specific_first = 0x80,
    + scsi_sense_Vendor_specific_last = 0xFF,
    +};
    +
    +struct scsi_sense_descriptor { /* for picking into desc type */
    + u8 descriptor_type; /* one of enum scsi_descriptor_types */
    + u8 additional_length; /* n - 1 */
    + u8 data[];
    +} __packed;
    +
    +/* OSD deploys only scsi descriptor_based sense buffers */
    +struct scsi_sense_descriptor_based {
    +/*0*/ u8 response_code; /* 0x72 or 0x73 */
    +/*1*/ u8 sense_key; /* one of enum scsi_sense_keys (4 lower bits) */
    +/*2*/ __be16 additional_sense_code; /* enum osd_additional_sense_codes */
    +/*4*/ u8 Reserved[3];
    +/*7*/ u8 additional_sense_length; /* n - 7 */
    +/*8*/ struct scsi_sense_descriptor ssd[0]; /* variable length, 1 or more */
    +} __packed;
    +
    +/* some descriptors deployed by OSD */
    +
    +/* SPC3r23 4.5.2.3 Command-specific information sense data descriptor */
    +/* Note: this is the same for descriptor_type=00 but with type=00 the
    + * Reserved[0] == 0x80 (ie. bit-7 set)
    + */
    +struct scsi_sense_command_specific_data_descriptor {
    +/*0*/ u8 descriptor_type; /* (00h/01h) */
    +/*1*/ u8 additional_length; /* (0Ah) */
    +/*2*/ u8 Reserved[2];
    +/*4*/ __be64 information;
    +} __packed;
    +/*12*/
    +
    +struct scsi_sense_key_specific_data_descriptor {
    +/*0*/ u8 descriptor_type; /* (02h) */
    +/*1*/ u8 additional_length; /* (06h) */
    +/*2*/ u8 Reserved[2];
    +/* SKSV, C/D, Reserved (2), BPV, BIT POINTER (3) */
    +/*4*/ u8 sksv_cd_bpv_bp;
    +/*5*/ __be16 value; /* field-pointer/progress-value/retry-count/... */
    +/*7*/ u8 Reserved2;
    +} __packed;
    +/*8*/
    +
    +/* 4.16.2.1 OSD error identification sense data descriptor - table 52 */
    +/* Note: these bits are defined LE order for easy definition, this way the BIT()
    + * number is the same as in the documentation. Below members at
    + * osd_sense_identification_data_descriptor are therefore defined __le32.
    + */
    +enum osd_command_functions_bits {
    + OSD_CFB_COMMAND = BIT(4),
    + OSD_CFB_CMD_CAP_VERIFIED = BIT(5),
    + OSD_CFB_VALIDATION = BIT(7),
    + OSD_CFB_IMP_ST_ATT = BIT(12),
    + OSD_CFB_SET_ATT = BIT(20),
    + OSD_CFB_SA_CAP_VERIFIED = BIT(21),
    + OSD_CFB_GET_ATT = BIT(28),
    + OSD_CFB_GA_CAP_VERIFIED = BIT(29),
    +};
    +
    +struct osd_sense_identification_data_descriptor {
    +/*0*/ u8 descriptor_type; /* (06h) */
    +/*1*/ u8 additional_length; /* (1Eh) */
    +/*2*/ u8 Reserved[6];
    +/*8*/ __le32 not_initiated_functions; /*osd_command_functions_bits*/
    +/*12*/ __le32 completed_functions; /*osd_command_functions_bits*/
    +/*16*/ __be64 partition_id;
    +/*24*/ __be64 object_id;
    +} __packed;
    +/*32*/
    +
    +struct osd_sense_response_integrity_check_descriptor {
    +/*0*/ u8 descriptor_type; /* (07h) */
    +/*1*/ u8 additional_length; /* (20h) */
    +/*2*/ u8 integrity_check_value[32]; /*FIXME: OSDv2_CRYPTO_KEYID_SIZE*/
    +} __packed;
    +/*34*/
    +
    +struct osd_sense_attributes_data_descriptor {
    +/*0*/ u8 descriptor_type; /* (08h) */
    +/*1*/ u8 additional_length; /* (n-2) */
    +/*2*/ u8 Reserved[6];
    + struct osd_sense_attr {
    +/*8*/ __be32 page;
    +/*12*/ __be32 attr;
    +/*16*/ } sense_attrs[0]; /* 1 or more */
    +} __packed;
    +/*variable*/
    +
    +/* Dig into scsi_sk_illegal_request/scsi_invalid_field_in_cdb errors */
    +
    +/*FIXME: Support also field in CAPS*/
    +#define OSD_CDB_OFFSET(F) offsetof(struct osd_cdb_head, F)
    +
    +enum osdv2_cdb_field_offset {
    + OSDv1_CFO_STARTING_BYTE = OSD_CDB_OFFSET(v1.start_address),
    + OSD_CFO_STARTING_BYTE = OSD_CDB_OFFSET(v2.start_address),
    + OSD_CFO_PARTITION_ID = OSD_CDB_OFFSET(partition),
    + OSD_CFO_OBJECT_ID = OSD_CDB_OFFSET(object),
    +};
    +
    +#endif /* ndef __OSD_SENSE_H__ */
    --
    1.6.0.1


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