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Commit 5141f16a authored by Hannes Reinecke's avatar Hannes Reinecke Committed by Martin K. Petersen
Browse files

scsi-trace: Decode MAINTENANCE_IN and MAINTENANCE_OUT commands 



Reviewed-by: default avatarEwan D. Milne <emilne@redhat.com>
Signed-off-by: default avatarHannes Reinecke <hare@suse.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent b3bc891e

drivers/scsi/scsi_trace.c

+91 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
 */

#include <linux/kernel.h>

#include <linux/trace_seq.h>

#include <asm/unaligned.h>

#include <trace/events/scsi.h>



#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
@@ -230,6 +231,92 @@ scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len) 
	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 *

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);

	case VARIABLE_LENGTH_CMD:

		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:

		return scsi_trace_misc(p, cdb, len);

	}