[SCSI] zfcp: Add traces for state changes.

This patch writes a trace record which provides information about state
changes for adapters, ports and units, e.g. target failure, targets becoming
online, targets being temporarily blocked due to pending recovery, targets
which have been recovered successfully etc.

Signed-off-by: Martin Peschke <mp3@de.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index 332c83eba6c7..659ec739706a 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -286,16 +286,27 @@ struct zfcp_rec_dbf_record_thread {
         u32 running;
 } __attribute__ ((packed));
 
+struct zfcp_rec_dbf_record_target {
+        u64 ref;
+        u32 status;
+        u32 d_id;
+        u64 wwpn;
+        u64 fcp_lun;
+        u32 erp_count;
+} __attribute__ ((packed));
+
 struct zfcp_rec_dbf_record {
         u8 id;
         u8 id2;
         union {
                 struct zfcp_rec_dbf_record_thread thread;
+                struct zfcp_rec_dbf_record_target target;
         } u;
 } __attribute__ ((packed));
 
 enum {
         ZFCP_REC_DBF_ID_THREAD,
+        ZFCP_REC_DBF_ID_TARGET,
 };
 
 struct zfcp_hba_dbf_record_response {