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authorHannes Reinecke <hare@suse.de>2016-03-24 17:21:19 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2016-04-11 23:57:09 +0300
commit5141f16a8a944f14e4b0348e8cd9e4dd1acb1a86 (patch)
tree939374b325c7c1dd16ea86fde87071ae1006ccc7 /drivers/scsi/scsi_trace.c
parentb3bc891eab51c98ec83458e2d7f0db629169ad80 (diff)
downloadlinux-5141f16a8a944f14e4b0348e8cd9e4dd1acb1a86.tar.xz
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>
Diffstat (limited to 'drivers/scsi/scsi_trace.c')
-rw-r--r--drivers/scsi/scsi_trace.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_trace.c b/drivers/scsi/scsi_trace.c
index 08bb47b53bc3..76d4e6fd9dc1 100644
--- a/drivers/scsi/scsi_trace.c
+++ b/drivers/scsi/scsi_trace.c
@@ -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)
@@ -231,6 +232,92 @@ out:
}
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)
{
switch (SERVICE_ACTION32(cdb)) {
@@ -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);
}