zfcp: trace on request for open and close of WKA port

commit d27a7cb91960cf1fdd11b10071e601828cbf4b1f upstream.

Since commit a54ca0f62f953898b05549391ac2a8a4dad6482b
("[SCSI] zfcp: Redesign of the debug tracing for HBA records.")
HBA records no longer contain WWPN, D_ID, or LUN
to reduce duplicate information which is already in REC records.
In contrast to "regular" target ports, we don't use recovery to open
WKA ports such as directory/nameserver, so we don't get REC records.
Therefore, introduce pseudo REC running records without any
actual recovery action but including D_ID of WKA port on open/close.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: a54ca0f62f95 ("[SCSI] zfcp: Redesign of the debug tracing for HBA records.")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index 394d5d4..e99b3d6 100644 (file)
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -314,6 +314,38 @@ void zfcp_dbf_rec_run(char *tag, struct zfcp_erp_action *erp)
        spin_unlock_irqrestore(&dbf->rec_lock, flags);
 }
 
+/**
+ * zfcp_dbf_rec_run_wka - trace wka port event with info like running recovery
+ * @tag: identifier for event
+ * @wka_port: well known address port
+ * @req_id: request ID to correlate with potential HBA trace record
+ */
+void zfcp_dbf_rec_run_wka(char *tag, struct zfcp_fc_wka_port *wka_port,
+                         u64 req_id)
+{
+       struct zfcp_dbf *dbf = wka_port->adapter->dbf;
+       struct zfcp_dbf_rec *rec = &dbf->rec_buf;
+       unsigned long flags;
+
+       spin_lock_irqsave(&dbf->rec_lock, flags);
+       memset(rec, 0, sizeof(*rec));
+
+       rec->id = ZFCP_DBF_REC_RUN;
+       memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
+       rec->port_status = wka_port->status;
+       rec->d_id = wka_port->d_id;
+       rec->lun = ZFCP_DBF_INVALID_LUN;
+
+       rec->u.run.fsf_req_id = req_id;
+       rec->u.run.rec_status = ~0;
+       rec->u.run.rec_step = ~0;
+       rec->u.run.rec_action = ~0;
+       rec->u.run.rec_count = ~0;
+
+       debug_event(dbf->rec, 1, rec, sizeof(*rec));
+       spin_unlock_irqrestore(&dbf->rec_lock, flags);
+}
+
 static inline
 void zfcp_dbf_san(char *tag, struct zfcp_dbf *dbf, void *data, u8 id, u16 len,
                  u64 req_id, u32 d_id)

diff --cc drivers/s390/scsi/zfcp_ext.h
Simple merge

diff --cc drivers/s390/scsi/zfcp_fsf.c
Simple merge