[SCSI] libosd: SCSI/OSD Sense decoding support
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>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Boaz Harrosh
James Bottomley
parent
1b9dce94c8
commit
98f3aea2bd
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@ -20,6 +20,12 @@ ccflags-y += -DCONFIG_SCSI_OSD_INITIATOR -DCONFIG_SCSI_OSD_INITIATOR_MODULE
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CONFIG_SCSI_OSD_ULD=m
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ccflags-y += -DCONFIG_SCSI_OSD_ULD -DCONFIG_SCSI_OSD_ULD_MODULE
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# CONFIG_SCSI_OSD_DPRINT_SENSE =
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# 0 - no print of errors
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# 1 - print errors
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# 2 - errors + warrnings
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ccflags-y += -DCONFIG_SCSI_OSD_DPRINT_SENSE=1
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# Uncomment to turn debug on
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# ccflags-y += -DCONFIG_SCSI_OSD_DEBUG
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@ -42,6 +42,8 @@
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#include <scsi/osd_initiator.h>
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#include <scsi/osd_sec.h>
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#include <scsi/osd_attributes.h>
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#include <scsi/osd_sense.h>
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#include <scsi/scsi_device.h>
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#include "osd_debug.h"
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@ -1339,6 +1341,195 @@ int osd_finalize_request(struct osd_request *or,
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}
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EXPORT_SYMBOL(osd_finalize_request);
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#define OSD_SENSE_PRINT1(fmt, a...) \
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do { \
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if (__cur_sense_need_output) \
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OSD_ERR(fmt, ##a); \
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} while (0)
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#define OSD_SENSE_PRINT2(fmt, a...) OSD_SENSE_PRINT1(" " fmt, ##a)
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int osd_req_decode_sense_full(struct osd_request *or,
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struct osd_sense_info *osi, bool silent,
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struct osd_obj_id *bad_obj_list __unused, int max_obj __unused,
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struct osd_attr *bad_attr_list, int max_attr)
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{
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int sense_len, original_sense_len;
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struct osd_sense_info local_osi;
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struct scsi_sense_descriptor_based *ssdb;
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void *cur_descriptor;
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#if (CONFIG_SCSI_OSD_DPRINT_SENSE == 0)
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const bool __cur_sense_need_output = false;
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#else
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bool __cur_sense_need_output = !silent;
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#endif
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if (!or->request->errors)
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return 0;
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ssdb = or->request->sense;
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sense_len = or->request->sense_len;
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if ((sense_len < (int)sizeof(*ssdb) || !ssdb->sense_key)) {
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OSD_ERR("Block-layer returned error(0x%x) but "
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"sense_len(%u) || key(%d) is empty\n",
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or->request->errors, sense_len, ssdb->sense_key);
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return -EIO;
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}
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if ((ssdb->response_code != 0x72) && (ssdb->response_code != 0x73)) {
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OSD_ERR("Unrecognized scsi sense: rcode=%x length=%d\n",
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ssdb->response_code, sense_len);
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return -EIO;
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}
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osi = osi ? : &local_osi;
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memset(osi, 0, sizeof(*osi));
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osi->key = ssdb->sense_key;
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osi->additional_code = be16_to_cpu(ssdb->additional_sense_code);
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original_sense_len = ssdb->additional_sense_length + 8;
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#if (CONFIG_SCSI_OSD_DPRINT_SENSE == 1)
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if (__cur_sense_need_output)
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__cur_sense_need_output = (osi->key > scsi_sk_recovered_error);
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#endif
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OSD_SENSE_PRINT1("Main Sense information key=0x%x length(%d, %d) "
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"additional_code=0x%x\n",
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osi->key, original_sense_len, sense_len,
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osi->additional_code);
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if (original_sense_len < sense_len)
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sense_len = original_sense_len;
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cur_descriptor = ssdb->ssd;
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sense_len -= sizeof(*ssdb);
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while (sense_len > 0) {
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struct scsi_sense_descriptor *ssd = cur_descriptor;
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int cur_len = ssd->additional_length + 2;
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sense_len -= cur_len;
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if (sense_len < 0)
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break; /* sense was truncated */
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switch (ssd->descriptor_type) {
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case scsi_sense_information:
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case scsi_sense_command_specific_information:
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{
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struct scsi_sense_command_specific_data_descriptor
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*sscd = cur_descriptor;
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osi->command_info =
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get_unaligned_be64(&sscd->information) ;
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OSD_SENSE_PRINT2(
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"command_specific_information 0x%llx \n",
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_LLU(osi->command_info));
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break;
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}
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case scsi_sense_key_specific:
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{
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struct scsi_sense_key_specific_data_descriptor
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*ssks = cur_descriptor;
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osi->sense_info = get_unaligned_be16(&ssks->value);
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OSD_SENSE_PRINT2(
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"sense_key_specific_information %u"
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"sksv_cd_bpv_bp (0x%x)\n",
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osi->sense_info, ssks->sksv_cd_bpv_bp);
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break;
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}
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case osd_sense_object_identification:
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{ /*FIXME: Keep first not last, Store in array*/
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struct osd_sense_identification_data_descriptor
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*osidd = cur_descriptor;
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osi->not_initiated_command_functions =
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le32_to_cpu(osidd->not_initiated_functions);
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osi->completed_command_functions =
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le32_to_cpu(osidd->completed_functions);
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osi->obj.partition = be64_to_cpu(osidd->partition_id);
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osi->obj.id = be64_to_cpu(osidd->object_id);
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OSD_SENSE_PRINT2(
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"object_identification pid=0x%llx oid=0x%llx\n",
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_LLU(osi->obj.partition), _LLU(osi->obj.id));
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OSD_SENSE_PRINT2(
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"not_initiated_bits(%x) "
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"completed_command_bits(%x)\n",
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osi->not_initiated_command_functions,
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osi->completed_command_functions);
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break;
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}
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case osd_sense_response_integrity_check:
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{
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struct osd_sense_response_integrity_check_descriptor
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*osricd = cur_descriptor;
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const unsigned len =
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sizeof(osricd->integrity_check_value);
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char key_dump[len*4 + 2]; /* 2nibbles+space+ASCII */
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hex_dump_to_buffer(osricd->integrity_check_value, len,
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32, 1, key_dump, sizeof(key_dump), true);
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OSD_SENSE_PRINT2("response_integrity [%s]\n", key_dump);
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}
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case osd_sense_attribute_identification:
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{
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struct osd_sense_attributes_data_descriptor
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*osadd = cur_descriptor;
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int len = min(cur_len, sense_len);
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int i = 0;
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struct osd_sense_attr *pattr = osadd->sense_attrs;
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while (len < 0) {
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u32 attr_page = be32_to_cpu(pattr->attr_page);
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u32 attr_id = be32_to_cpu(pattr->attr_id);
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if (i++ == 0) {
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osi->attr.attr_page = attr_page;
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osi->attr.attr_id = attr_id;
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}
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if (bad_attr_list && max_attr) {
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bad_attr_list->attr_page = attr_page;
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bad_attr_list->attr_id = attr_id;
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bad_attr_list++;
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max_attr--;
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}
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OSD_SENSE_PRINT2(
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"osd_sense_attribute_identification"
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"attr_page=0x%x attr_id=0x%x\n",
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attr_page, attr_id);
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}
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}
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/*These are not legal for OSD*/
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case scsi_sense_field_replaceable_unit:
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OSD_SENSE_PRINT2("scsi_sense_field_replaceable_unit\n");
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break;
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case scsi_sense_stream_commands:
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OSD_SENSE_PRINT2("scsi_sense_stream_commands\n");
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break;
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case scsi_sense_block_commands:
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OSD_SENSE_PRINT2("scsi_sense_block_commands\n");
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break;
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case scsi_sense_ata_return:
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OSD_SENSE_PRINT2("scsi_sense_ata_return\n");
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break;
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default:
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if (ssd->descriptor_type <= scsi_sense_Reserved_last)
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OSD_SENSE_PRINT2(
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"scsi_sense Reserved descriptor (0x%x)",
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ssd->descriptor_type);
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else
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OSD_SENSE_PRINT2(
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"scsi_sense Vendor descriptor (0x%x)",
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ssd->descriptor_type);
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}
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cur_descriptor += cur_len;
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}
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return (osi->key > scsi_sk_recovered_error) ? -EIO : 0;
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}
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EXPORT_SYMBOL(osd_req_decode_sense_full);
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/*
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* Implementation of osd_sec.h API
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* TODO: Move to a separate osd_sec.c file at a later stage.
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@ -216,6 +216,55 @@ int osd_execute_request(struct osd_request *or);
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int osd_execute_request_async(struct osd_request *or,
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osd_req_done_fn *done, void *private);
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/**
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* osd_req_decode_sense_full - Decode sense information after execution.
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*
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* @or: - osd_request to examine
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* @osi - Recievs a more detailed error report information (optional).
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* @silent - Do not print to dmsg (Even if enabled)
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* @bad_obj_list - Some commands act on multiple objects. Failed objects will
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* be recieved here (optional)
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* @max_obj - Size of @bad_obj_list.
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* @bad_attr_list - List of failing attributes (optional)
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* @max_attr - Size of @bad_attr_list.
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*
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* After execution, sense + return code can be analyzed using this function. The
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* return code is the final disposition on the error. So it is possible that a
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* CHECK_CONDITION was returned from target but this will return NO_ERROR, for
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* example on recovered errors. All parameters are optional if caller does
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* not need any returned information.
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* Note: This function will also dump the error to dmsg according to settings
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* of the SCSI_OSD_DPRINT_SENSE Kconfig value. Set @silent if you know the
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* command would routinely fail, to not spam the dmsg file.
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*/
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struct osd_sense_info {
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int key; /* one of enum scsi_sense_keys */
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int additional_code ; /* enum osd_additional_sense_codes */
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union { /* Sense specific information */
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u16 sense_info;
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u16 cdb_field_offset; /* scsi_invalid_field_in_cdb */
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};
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union { /* Command specific information */
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u64 command_info;
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};
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u32 not_initiated_command_functions; /* osd_command_functions_bits */
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u32 completed_command_functions; /* osd_command_functions_bits */
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struct osd_obj_id obj;
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struct osd_attr attr;
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};
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int osd_req_decode_sense_full(struct osd_request *or,
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struct osd_sense_info *osi, bool silent,
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struct osd_obj_id *bad_obj_list, int max_obj,
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struct osd_attr *bad_attr_list, int max_attr);
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static inline int osd_req_decode_sense(struct osd_request *or,
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struct osd_sense_info *osi)
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{
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return osd_req_decode_sense_full(or, osi, false, NULL, 0, NULL, 0);
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}
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/**
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* osd_end_request - return osd_request to free store
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*
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@ -0,0 +1,260 @@
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/*
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* osd_sense.h - OSD Related sense handling definitions.
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*
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* Copyright (C) 2008 Panasas Inc. All rights reserved.
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*
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* Authors:
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* Boaz Harrosh <bharrosh@panasas.com>
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* Benny Halevy <bhalevy@panasas.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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*
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* This file contains types and constants that are defined by the protocol
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* Note: All names and symbols are taken from the OSD standard's text.
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*/
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#ifndef __OSD_SENSE_H__
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#define __OSD_SENSE_H__
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#include <scsi/osd_protocol.h>
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/* SPC3r23 4.5.6 Sense key and sense code definitions table 27 */
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enum scsi_sense_keys {
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scsi_sk_no_sense = 0x0,
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scsi_sk_recovered_error = 0x1,
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scsi_sk_not_ready = 0x2,
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scsi_sk_medium_error = 0x3,
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scsi_sk_hardware_error = 0x4,
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scsi_sk_illegal_request = 0x5,
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scsi_sk_unit_attention = 0x6,
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scsi_sk_data_protect = 0x7,
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scsi_sk_blank_check = 0x8,
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scsi_sk_vendor_specific = 0x9,
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scsi_sk_copy_aborted = 0xa,
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scsi_sk_aborted_command = 0xb,
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scsi_sk_volume_overflow = 0xd,
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scsi_sk_miscompare = 0xe,
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scsi_sk_reserved = 0xf,
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};
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/* SPC3r23 4.5.6 Sense key and sense code definitions table 28 */
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/* Note: only those which can be returned by an OSD target. Most of
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* these errors are taken care of by the generic scsi layer.
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*/
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enum osd_additional_sense_codes {
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scsi_no_additional_sense_information = 0x0000,
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scsi_operation_in_progress = 0x0016,
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scsi_cleaning_requested = 0x0017,
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scsi_lunr_cause_not_reportable = 0x0400,
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scsi_logical_unit_is_in_process_of_becoming_ready = 0x0401,
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scsi_lunr_initializing_command_required = 0x0402,
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scsi_lunr_manual_intervention_required = 0x0403,
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scsi_lunr_operation_in_progress = 0x0407,
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scsi_lunr_selftest_in_progress = 0x0409,
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scsi_luna_asymmetric_access_state_transition = 0x040a,
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scsi_luna_target_port_in_standby_state = 0x040b,
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scsi_luna_target_port_in_unavailable_state = 0x040c,
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scsi_lunr_notify_enable_spinup_required = 0x0411,
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scsi_logical_unit_does_not_respond_to_selection = 0x0500,
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scsi_logical_unit_communication_failure = 0x0800,
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scsi_logical_unit_communication_timeout = 0x0801,
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scsi_logical_unit_communication_parity_error = 0x0802,
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scsi_error_log_overflow = 0x0a00,
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scsi_warning = 0x0b00,
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scsi_warning_specified_temperature_exceeded = 0x0b01,
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scsi_warning_enclosure_degraded = 0x0b02,
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scsi_write_error_unexpected_unsolicited_data = 0x0c0c,
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scsi_write_error_not_enough_unsolicited_data = 0x0c0d,
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scsi_invalid_information_unit = 0x0e00,
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scsi_invalid_field_in_command_information_unit = 0x0e03,
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scsi_read_error_failed_retransmission_request = 0x1113,
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scsi_parameter_list_length_error = 0x1a00,
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scsi_invalid_command_operation_code = 0x2000,
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scsi_invalid_field_in_cdb = 0x2400,
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osd_security_audit_value_frozen = 0x2404,
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osd_security_working_key_frozen = 0x2405,
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osd_nonce_not_unique = 0x2406,
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osd_nonce_timestamp_out_of_range = 0x2407,
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scsi_logical_unit_not_supported = 0x2500,
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scsi_invalid_field_in_parameter_list = 0x2600,
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scsi_parameter_not_supported = 0x2601,
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scsi_parameter_value_invalid = 0x2602,
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scsi_invalid_release_of_persistent_reservation = 0x2604,
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osd_invalid_dataout_buffer_integrity_check_value = 0x260f,
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scsi_not_ready_to_ready_change_medium_may_have_changed = 0x2800,
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scsi_power_on_reset_or_bus_device_reset_occurred = 0x2900,
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scsi_power_on_occurred = 0x2901,
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scsi_scsi_bus_reset_occurred = 0x2902,
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scsi_bus_device_reset_function_occurred = 0x2903,
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scsi_device_internal_reset = 0x2904,
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scsi_transceiver_mode_changed_to_single_ended = 0x2905,
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scsi_transceiver_mode_changed_to_lvd = 0x2906,
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scsi_i_t_nexus_loss_occurred = 0x2907,
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scsi_parameters_changed = 0x2a00,
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scsi_mode_parameters_changed = 0x2a01,
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scsi_asymmetric_access_state_changed = 0x2a06,
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scsi_priority_changed = 0x2a08,
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scsi_command_sequence_error = 0x2c00,
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scsi_previous_busy_status = 0x2c07,
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scsi_previous_task_set_full_status = 0x2c08,
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scsi_previous_reservation_conflict_status = 0x2c09,
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osd_partition_or_collection_contains_user_objects = 0x2c0a,
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scsi_commands_cleared_by_another_initiator = 0x2f00,
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scsi_cleaning_failure = 0x3007,
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scsi_enclosure_failure = 0x3400,
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scsi_enclosure_services_failure = 0x3500,
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scsi_unsupported_enclosure_function = 0x3501,
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scsi_enclosure_services_unavailable = 0x3502,
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scsi_enclosure_services_transfer_failure = 0x3503,
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scsi_enclosure_services_transfer_refused = 0x3504,
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scsi_enclosure_services_checksum_error = 0x3505,
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scsi_rounded_parameter = 0x3700,
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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 attr_page;
|
||||
/*12*/ __be32 attr_id;
|
||||
/*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__ */
|
||||
Loading…
Reference in New Issue