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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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