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scsi-trace: Decode MAINTENANCE_IN and MAINTENANCE_OUT commands 

Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2016-03-24 15:21:19 +01:00 committed by Martin K. Petersen
parent b3bc891eab
commit 5141f16a8a
1 changed files with 91 additions and 0 deletions
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91
drivers/scsi/scsi_trace.c
View File

@ -17,6 +17,7 @@
*/ */
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/trace_seq.h> #include <linux/trace_seq.h>
#include <asm/unaligned.h>
#include <trace/events/scsi.h> #include <trace/events/scsi.h>
#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f) #define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
@ -230,6 +231,92 @@ out:
return ret; return ret;
} }
static const char *
scsi_trace_maintenance_in(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p), *cmd;
u32 alloc_len;
switch (SERVICE_ACTION16(cdb)) {
case MI_REPORT_IDENTIFYING_INFORMATION:
cmd = "REPORT_IDENTIFYING_INFORMATION";
break;
case MI_REPORT_TARGET_PGS:
cmd = "REPORT_TARGET_PORT_GROUPS";
break;
case MI_REPORT_ALIASES:
cmd = "REPORT_ALIASES";
break;
case MI_REPORT_SUPPORTED_OPERATION_CODES:
cmd = "REPORT_SUPPORTED_OPERATION_CODES";
break;
case MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS:
cmd = "REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS";
break;
case MI_REPORT_PRIORITY:
cmd = "REPORT_PRIORITY";
break;
case MI_REPORT_TIMESTAMP:
cmd = "REPORT_TIMESTAMP";
break;
case MI_MANAGEMENT_PROTOCOL_IN:
cmd = "MANAGEMENT_PROTOCOL_IN";
break;
default:
trace_seq_puts(p, "UNKNOWN");
goto out;
}
alloc_len = get_unaligned_be32(&cdb[6]);
trace_seq_printf(p, "%s alloc_len=%u", cmd, alloc_len);
out:
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_maintenance_out(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p), *cmd;
u32 alloc_len;
switch (SERVICE_ACTION16(cdb)) {
case MO_SET_IDENTIFYING_INFORMATION:
cmd = "SET_IDENTIFYING_INFORMATION";
break;
case MO_SET_TARGET_PGS:
cmd = "SET_TARGET_PORT_GROUPS";
break;
case MO_CHANGE_ALIASES:
cmd = "CHANGE_ALIASES";
break;
case MO_SET_PRIORITY:
cmd = "SET_PRIORITY";
break;
case MO_SET_TIMESTAMP:
cmd = "SET_TIMESTAMP";
break;
case MO_MANAGEMENT_PROTOCOL_OUT:
cmd = "MANAGEMENT_PROTOCOL_OUT";
break;
default:
trace_seq_puts(p, "UNKNOWN");
goto out;
}
alloc_len = get_unaligned_be32(&cdb[6]);
trace_seq_printf(p, "%s alloc_len=%u", cmd, alloc_len);
out:
trace_seq_putc(p, 0);
return ret;
}
static const char * static const char *
scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len) scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len)
{ {
@ -282,6 +369,10 @@ scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
return scsi_trace_service_action_in(p, cdb, len); return scsi_trace_service_action_in(p, cdb, len);
case VARIABLE_LENGTH_CMD: case VARIABLE_LENGTH_CMD:
return scsi_trace_varlen(p, cdb, len); return scsi_trace_varlen(p, cdb, len);
case MAINTENANCE_IN:
return scsi_trace_maintenance_in(p, cdb, len);
case MAINTENANCE_OUT:
return scsi_trace_maintenance_out(p, cdb, len);
default: default:
return scsi_trace_misc(p, cdb, len); return scsi_trace_misc(p, cdb, len);
} }