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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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2053a1db41
The unpacked_lun field in the SCSI target tracepoints should be initialized with cmd->orig_fe_lun rather than cmd->se_lun->unpacked_lun for two reasons: - most importantly, if we are in the cmd_complete tracepoint returning a check condition due to no LUN found, cmd->se_lun will be NULL and we'll crash trying to dereference it. - also, in any case, cmd->se_lun->unpacked_lun is an internal index into the target's internal set of LUNs; cmd->orig_fe_lun is much more useful and interesting, since it's the value the initiator actually sent. Signed-off-by: Roland Dreier <roland@purestorage.com> Cc: <stable@vger.kernel.org> # 3.11+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
215 lines
7.5 KiB
C
215 lines
7.5 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM target
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#if !defined(_TRACE_TARGET_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_TARGET_H
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#include <linux/tracepoint.h>
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#include <linux/trace_seq.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_tcq.h>
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#include <target/target_core_base.h>
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/* cribbed verbatim from <trace/event/scsi.h> */
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#define scsi_opcode_name(opcode) { opcode, #opcode }
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#define show_opcode_name(val) \
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__print_symbolic(val, \
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scsi_opcode_name(TEST_UNIT_READY), \
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scsi_opcode_name(REZERO_UNIT), \
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scsi_opcode_name(REQUEST_SENSE), \
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scsi_opcode_name(FORMAT_UNIT), \
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scsi_opcode_name(READ_BLOCK_LIMITS), \
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scsi_opcode_name(REASSIGN_BLOCKS), \
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scsi_opcode_name(INITIALIZE_ELEMENT_STATUS), \
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scsi_opcode_name(READ_6), \
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scsi_opcode_name(WRITE_6), \
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scsi_opcode_name(SEEK_6), \
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scsi_opcode_name(READ_REVERSE), \
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scsi_opcode_name(WRITE_FILEMARKS), \
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scsi_opcode_name(SPACE), \
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scsi_opcode_name(INQUIRY), \
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scsi_opcode_name(RECOVER_BUFFERED_DATA), \
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scsi_opcode_name(MODE_SELECT), \
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scsi_opcode_name(RESERVE), \
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scsi_opcode_name(RELEASE), \
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scsi_opcode_name(COPY), \
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scsi_opcode_name(ERASE), \
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scsi_opcode_name(MODE_SENSE), \
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scsi_opcode_name(START_STOP), \
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scsi_opcode_name(RECEIVE_DIAGNOSTIC), \
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scsi_opcode_name(SEND_DIAGNOSTIC), \
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scsi_opcode_name(ALLOW_MEDIUM_REMOVAL), \
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scsi_opcode_name(SET_WINDOW), \
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scsi_opcode_name(READ_CAPACITY), \
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scsi_opcode_name(READ_10), \
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scsi_opcode_name(WRITE_10), \
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scsi_opcode_name(SEEK_10), \
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scsi_opcode_name(POSITION_TO_ELEMENT), \
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scsi_opcode_name(WRITE_VERIFY), \
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scsi_opcode_name(VERIFY), \
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scsi_opcode_name(SEARCH_HIGH), \
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scsi_opcode_name(SEARCH_EQUAL), \
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scsi_opcode_name(SEARCH_LOW), \
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scsi_opcode_name(SET_LIMITS), \
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scsi_opcode_name(PRE_FETCH), \
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scsi_opcode_name(READ_POSITION), \
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scsi_opcode_name(SYNCHRONIZE_CACHE), \
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scsi_opcode_name(LOCK_UNLOCK_CACHE), \
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scsi_opcode_name(READ_DEFECT_DATA), \
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scsi_opcode_name(MEDIUM_SCAN), \
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scsi_opcode_name(COMPARE), \
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scsi_opcode_name(COPY_VERIFY), \
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scsi_opcode_name(WRITE_BUFFER), \
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scsi_opcode_name(READ_BUFFER), \
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scsi_opcode_name(UPDATE_BLOCK), \
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scsi_opcode_name(READ_LONG), \
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scsi_opcode_name(WRITE_LONG), \
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scsi_opcode_name(CHANGE_DEFINITION), \
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scsi_opcode_name(WRITE_SAME), \
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scsi_opcode_name(UNMAP), \
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scsi_opcode_name(READ_TOC), \
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scsi_opcode_name(LOG_SELECT), \
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scsi_opcode_name(LOG_SENSE), \
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scsi_opcode_name(XDWRITEREAD_10), \
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scsi_opcode_name(MODE_SELECT_10), \
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scsi_opcode_name(RESERVE_10), \
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scsi_opcode_name(RELEASE_10), \
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scsi_opcode_name(MODE_SENSE_10), \
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scsi_opcode_name(PERSISTENT_RESERVE_IN), \
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scsi_opcode_name(PERSISTENT_RESERVE_OUT), \
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scsi_opcode_name(VARIABLE_LENGTH_CMD), \
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scsi_opcode_name(REPORT_LUNS), \
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scsi_opcode_name(MAINTENANCE_IN), \
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scsi_opcode_name(MAINTENANCE_OUT), \
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scsi_opcode_name(MOVE_MEDIUM), \
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scsi_opcode_name(EXCHANGE_MEDIUM), \
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scsi_opcode_name(READ_12), \
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scsi_opcode_name(WRITE_12), \
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scsi_opcode_name(WRITE_VERIFY_12), \
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scsi_opcode_name(SEARCH_HIGH_12), \
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scsi_opcode_name(SEARCH_EQUAL_12), \
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scsi_opcode_name(SEARCH_LOW_12), \
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scsi_opcode_name(READ_ELEMENT_STATUS), \
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scsi_opcode_name(SEND_VOLUME_TAG), \
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scsi_opcode_name(WRITE_LONG_2), \
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scsi_opcode_name(READ_16), \
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scsi_opcode_name(WRITE_16), \
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scsi_opcode_name(VERIFY_16), \
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scsi_opcode_name(WRITE_SAME_16), \
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scsi_opcode_name(SERVICE_ACTION_IN), \
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scsi_opcode_name(SAI_READ_CAPACITY_16), \
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scsi_opcode_name(SAI_GET_LBA_STATUS), \
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scsi_opcode_name(MI_REPORT_TARGET_PGS), \
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scsi_opcode_name(MO_SET_TARGET_PGS), \
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scsi_opcode_name(READ_32), \
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scsi_opcode_name(WRITE_32), \
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scsi_opcode_name(WRITE_SAME_32), \
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scsi_opcode_name(ATA_16), \
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scsi_opcode_name(ATA_12))
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#define show_task_attribute_name(val) \
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__print_symbolic(val, \
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{ MSG_SIMPLE_TAG, "SIMPLE" }, \
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{ MSG_HEAD_TAG, "HEAD" }, \
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{ MSG_ORDERED_TAG, "ORDERED" }, \
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{ MSG_ACA_TAG, "ACA" } )
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#define show_scsi_status_name(val) \
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__print_symbolic(val, \
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{ SAM_STAT_GOOD, "GOOD" }, \
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{ SAM_STAT_CHECK_CONDITION, "CHECK CONDITION" }, \
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{ SAM_STAT_CONDITION_MET, "CONDITION MET" }, \
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{ SAM_STAT_BUSY, "BUSY" }, \
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{ SAM_STAT_INTERMEDIATE, "INTERMEDIATE" }, \
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{ SAM_STAT_INTERMEDIATE_CONDITION_MET, "INTERMEDIATE CONDITION MET" }, \
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{ SAM_STAT_RESERVATION_CONFLICT, "RESERVATION CONFLICT" }, \
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{ SAM_STAT_COMMAND_TERMINATED, "COMMAND TERMINATED" }, \
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{ SAM_STAT_TASK_SET_FULL, "TASK SET FULL" }, \
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{ SAM_STAT_ACA_ACTIVE, "ACA ACTIVE" }, \
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{ SAM_STAT_TASK_ABORTED, "TASK ABORTED" } )
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TRACE_EVENT(target_sequencer_start,
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TP_PROTO(struct se_cmd *cmd),
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TP_ARGS(cmd),
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TP_STRUCT__entry(
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__field( unsigned int, unpacked_lun )
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__field( unsigned int, opcode )
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__field( unsigned int, data_length )
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__field( unsigned int, task_attribute )
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__array( unsigned char, cdb, TCM_MAX_COMMAND_SIZE )
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__string( initiator, cmd->se_sess->se_node_acl->initiatorname )
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),
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TP_fast_assign(
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__entry->unpacked_lun = cmd->orig_fe_lun;
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__entry->opcode = cmd->t_task_cdb[0];
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__entry->data_length = cmd->data_length;
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__entry->task_attribute = cmd->sam_task_attr;
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memcpy(__entry->cdb, cmd->t_task_cdb, TCM_MAX_COMMAND_SIZE);
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__assign_str(initiator, cmd->se_sess->se_node_acl->initiatorname);
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),
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TP_printk("%s -> LUN %03u %s data_length %6u CDB %s (TA:%s C:%02x)",
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__get_str(initiator), __entry->unpacked_lun,
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show_opcode_name(__entry->opcode),
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__entry->data_length, __print_hex(__entry->cdb, 16),
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show_task_attribute_name(__entry->task_attribute),
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scsi_command_size(__entry->cdb) <= 16 ?
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__entry->cdb[scsi_command_size(__entry->cdb) - 1] :
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__entry->cdb[1]
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)
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);
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TRACE_EVENT(target_cmd_complete,
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TP_PROTO(struct se_cmd *cmd),
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TP_ARGS(cmd),
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TP_STRUCT__entry(
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__field( unsigned int, unpacked_lun )
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__field( unsigned int, opcode )
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__field( unsigned int, data_length )
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__field( unsigned int, task_attribute )
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__field( unsigned char, scsi_status )
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__field( unsigned char, sense_length )
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__array( unsigned char, cdb, TCM_MAX_COMMAND_SIZE )
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__array( unsigned char, sense_data, 18 )
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__string(initiator, cmd->se_sess->se_node_acl->initiatorname)
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),
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TP_fast_assign(
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__entry->unpacked_lun = cmd->orig_fe_lun;
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__entry->opcode = cmd->t_task_cdb[0];
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__entry->data_length = cmd->data_length;
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__entry->task_attribute = cmd->sam_task_attr;
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__entry->scsi_status = cmd->scsi_status;
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__entry->sense_length = cmd->scsi_status == SAM_STAT_CHECK_CONDITION ?
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min(18, ((u8 *) cmd->sense_buffer)[SPC_ADD_SENSE_LEN_OFFSET] + 8) : 0;
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memcpy(__entry->cdb, cmd->t_task_cdb, TCM_MAX_COMMAND_SIZE);
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memcpy(__entry->sense_data, cmd->sense_buffer, __entry->sense_length);
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__assign_str(initiator, cmd->se_sess->se_node_acl->initiatorname);
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),
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TP_printk("%s <- LUN %03u status %s (sense len %d%s%s) %s data_length %6u CDB %s (TA:%s C:%02x)",
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__get_str(initiator), __entry->unpacked_lun,
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show_scsi_status_name(__entry->scsi_status),
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__entry->sense_length, __entry->sense_length ? " / " : "",
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__print_hex(__entry->sense_data, __entry->sense_length),
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show_opcode_name(__entry->opcode),
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__entry->data_length, __print_hex(__entry->cdb, 16),
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show_task_attribute_name(__entry->task_attribute),
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scsi_command_size(__entry->cdb) <= 16 ?
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__entry->cdb[scsi_command_size(__entry->cdb) - 1] :
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__entry->cdb[1]
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)
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);
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#endif /* _TRACE_TARGET_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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