[SCSI] zfcp: Shorten excessive names in debug trace.

Saving on line breaks, improving readability, by shortening excessive
function names and identifiers, by simplifying some functions call
chains, and by simplifying nesting of some data structure.
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>

drivers/s390/scsi/zfcp_dbf.c

@@ -144,12 +144,12 @@ void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
 	struct zfcp_unit *unit;
 	struct zfcp_send_els *send_els;
 	struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
-	struct zfcp_hba_dbf_record_response *response = &rec->type.response;
+	struct zfcp_hba_dbf_record_response *response = &rec->u.response;
 	int level;
 	unsigned long flags;
 
 	spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
-	memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
+	memset(rec, 0, sizeof(*rec));
 	strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
 
 	if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
@@ -193,11 +193,9 @@ void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
 		if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
 			break;
 		scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
-		if (scsi_cmnd != NULL) {
-			response->data.send_fcp.scsi_cmnd
-			    = (unsigned long)scsi_cmnd;
-			response->data.send_fcp.scsi_serial
-			    = scsi_cmnd->serial_number;
+		if (scsi_cmnd) {
+			response->u.fcp.cmnd = (unsigned long)scsi_cmnd;
+			response->u.fcp.serial = scsi_cmnd->serial_number;
 		}
 		break;
 
@@ -205,25 +203,25 @@ void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
 	case FSF_QTCB_CLOSE_PORT:
 	case FSF_QTCB_CLOSE_PHYSICAL_PORT:
 		port = (struct zfcp_port *)fsf_req->data;
-		response->data.port.wwpn = port->wwpn;
-		response->data.port.d_id = port->d_id;
-		response->data.port.port_handle = qtcb->header.port_handle;
+		response->u.port.wwpn = port->wwpn;
+		response->u.port.d_id = port->d_id;
+		response->u.port.port_handle = qtcb->header.port_handle;
 		break;
 
 	case FSF_QTCB_OPEN_LUN:
 	case FSF_QTCB_CLOSE_LUN:
 		unit = (struct zfcp_unit *)fsf_req->data;
 		port = unit->port;
-		response->data.unit.wwpn = port->wwpn;
-		response->data.unit.fcp_lun = unit->fcp_lun;
-		response->data.unit.port_handle = qtcb->header.port_handle;
-		response->data.unit.lun_handle = qtcb->header.lun_handle;
+		response->u.unit.wwpn = port->wwpn;
+		response->u.unit.fcp_lun = unit->fcp_lun;
+		response->u.unit.port_handle = qtcb->header.port_handle;
+		response->u.unit.lun_handle = qtcb->header.lun_handle;
 		break;
 
 	case FSF_QTCB_SEND_ELS:
 		send_els = (struct zfcp_send_els *)fsf_req->data;
-		response->data.send_els.d_id = qtcb->bottom.support.d_id;
-		response->data.send_els.ls_code = send_els->ls_code >> 24;
+		response->u.els.d_id = qtcb->bottom.support.d_id;
+		response->u.els.ls_code = send_els->ls_code >> 24;
 		break;
 
 	case FSF_QTCB_ABORT_FCP_CMND:
@@ -235,8 +233,7 @@ void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
 		break;
 	}
 
-	debug_event(adapter->hba_dbf, level,
-		    rec, sizeof(struct zfcp_hba_dbf_record));
+	debug_event(adapter->hba_dbf, level, rec, sizeof(*rec));
 
 	/* have fcp channel microcode fixed to use as little as possible */
 	if (fsf_req->fsf_command != FSF_QTCB_FCP_CMND) {
@@ -259,26 +256,26 @@ zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
 	unsigned long flags;
 
 	spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
-	memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
+	memset(rec, 0, sizeof(*rec));
 	strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
 	strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
 
-	rec->type.status.failed = adapter->status_read_failed;
+	rec->u.status.failed = adapter->status_read_failed;
 	if (status_buffer != NULL) {
-		rec->type.status.status_type = status_buffer->status_type;
-		rec->type.status.status_subtype = status_buffer->status_subtype;
-		memcpy(&rec->type.status.queue_designator,
+		rec->u.status.status_type = status_buffer->status_type;
+		rec->u.status.status_subtype = status_buffer->status_subtype;
+		memcpy(&rec->u.status.queue_designator,
 		       &status_buffer->queue_designator,
 		       sizeof(struct fsf_queue_designator));
 
 		switch (status_buffer->status_type) {
 		case FSF_STATUS_READ_SENSE_DATA_AVAIL:
-			rec->type.status.payload_size =
+			rec->u.status.payload_size =
 			    ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
 			break;
 
 		case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
-			rec->type.status.payload_size =
+			rec->u.status.payload_size =
 			    ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
 			break;
 
@@ -286,22 +283,21 @@ zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
 			switch (status_buffer->status_subtype) {
 			case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
 			case FSF_STATUS_READ_SUB_FDISC_FAILED:
-				rec->type.status.payload_size =
+				rec->u.status.payload_size =
 					sizeof(struct fsf_link_down_info);
 			}
 			break;
 
 		case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
-			rec->type.status.payload_size =
+			rec->u.status.payload_size =
 			    ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
 			break;
 		}
-		memcpy(&rec->type.status.payload,
-		       &status_buffer->payload, rec->type.status.payload_size);
+		memcpy(&rec->u.status.payload,
+		       &status_buffer->payload, rec->u.status.payload_size);
 	}
 
-	debug_event(adapter->hba_dbf, 2,
-		    rec, sizeof(struct zfcp_hba_dbf_record));
+	debug_event(adapter->hba_dbf, 2, rec, sizeof(*rec));
 	spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
 }
 
@@ -310,19 +306,18 @@ zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter, unsigned int status,
 			unsigned int qdio_error, unsigned int siga_error,
 			int sbal_index, int sbal_count)
 {
-	struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
+	struct zfcp_hba_dbf_record *r = &adapter->hba_dbf_buf;
 	unsigned long flags;
 
 	spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
-	memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
-	strncpy(rec->tag, "qdio", ZFCP_DBF_TAG_SIZE);
-	rec->type.qdio.status = status;
-	rec->type.qdio.qdio_error = qdio_error;
-	rec->type.qdio.siga_error = siga_error;
-	rec->type.qdio.sbal_index = sbal_index;
-	rec->type.qdio.sbal_count = sbal_count;
-	debug_event(adapter->hba_dbf, 0,
-		    rec, sizeof(struct zfcp_hba_dbf_record));
+	memset(r, 0, sizeof(*r));
+	strncpy(r->tag, "qdio", ZFCP_DBF_TAG_SIZE);
+	r->u.qdio.status = status;
+	r->u.qdio.qdio_error = qdio_error;
+	r->u.qdio.siga_error = siga_error;
+	r->u.qdio.sbal_index = sbal_index;
+	r->u.qdio.sbal_count = sbal_count;
+	debug_event(adapter->hba_dbf, 0, r, sizeof(*r));
 	spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
 }
 
@@ -352,34 +347,29 @@ static void zfcp_hba_dbf_view_response(char **p,
 	case FSF_QTCB_FCP_CMND:
 		if (r->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
 			break;
-		zfcp_dbf_out(p, "scsi_cmnd", "0x%0Lx",
-			     r->data.send_fcp.scsi_cmnd);
-		zfcp_dbf_out(p, "scsi_serial", "0x%016Lx",
-			     r->data.send_fcp.scsi_serial);
+		zfcp_dbf_out(p, "scsi_cmnd", "0x%0Lx", r->u.fcp.cmnd);
+		zfcp_dbf_out(p, "scsi_serial", "0x%016Lx", r->u.fcp.serial);
 		break;
 
 	case FSF_QTCB_OPEN_PORT_WITH_DID:
 	case FSF_QTCB_CLOSE_PORT:
 	case FSF_QTCB_CLOSE_PHYSICAL_PORT:
-		zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->data.port.wwpn);
-		zfcp_dbf_out(p, "d_id", "0x%06x", r->data.port.d_id);
-		zfcp_dbf_out(p, "port_handle", "0x%08x",
-			     r->data.port.port_handle);
+		zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.port.wwpn);
+		zfcp_dbf_out(p, "d_id", "0x%06x", r->u.port.d_id);
+		zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.port.port_handle);
 		break;
 
 	case FSF_QTCB_OPEN_LUN:
 	case FSF_QTCB_CLOSE_LUN:
-		zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->data.unit.wwpn);
-		zfcp_dbf_out(p, "fcp_lun", "0x%016Lx", r->data.unit.fcp_lun);
-		zfcp_dbf_out(p, "port_handle", "0x%08x",
-			     r->data.unit.port_handle);
-		zfcp_dbf_out(p, "lun_handle", "0x%08x",
-			     r->data.unit.lun_handle);
+		zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.unit.wwpn);
+		zfcp_dbf_out(p, "fcp_lun", "0x%016Lx", r->u.unit.fcp_lun);
+		zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.unit.port_handle);
+		zfcp_dbf_out(p, "lun_handle", "0x%08x", r->u.unit.lun_handle);
 		break;
 
 	case FSF_QTCB_SEND_ELS:
-		zfcp_dbf_out(p, "d_id", "0x%06x", r->data.send_els.d_id);
-		zfcp_dbf_out(p, "ls_code", "0x%02x", r->data.send_els.ls_code);
+		zfcp_dbf_out(p, "d_id", "0x%06x", r->u.els.d_id);
+		zfcp_dbf_out(p, "ls_code", "0x%02x", r->u.els.ls_code);
 		break;
 
 	case FSF_QTCB_ABORT_FCP_CMND:
@@ -428,11 +418,11 @@ static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view,
 		zfcp_dbf_tag(&p, "tag2", r->tag2);
 
 	if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
-		zfcp_hba_dbf_view_response(&p, &r->type.response);
+		zfcp_hba_dbf_view_response(&p, &r->u.response);
 	else if (strncmp(r->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
-		zfcp_hba_dbf_view_status(&p, &r->type.status);
+		zfcp_hba_dbf_view_status(&p, &r->u.status);
 	else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
-		zfcp_hba_dbf_view_qdio(&p, &r->type.qdio);
+		zfcp_hba_dbf_view_qdio(&p, &r->u.qdio);
 
 	p += sprintf(p, "\n");
 	return p - out_buf;
@@ -823,57 +813,34 @@ void zfcp_rec_dbf_event_action(u8 id2, struct zfcp_erp_action *erp_action)
 	spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
 }
 
-static void
-_zfcp_san_dbf_event_common_ct(const char *tag, struct zfcp_fsf_req *fsf_req,
-			      u32 s_id, u32 d_id, void *buffer, int buflen)
-{
-	struct zfcp_send_ct *send_ct = (struct zfcp_send_ct *)fsf_req->data;
-	struct zfcp_port *port = send_ct->port;
-	struct zfcp_adapter *adapter = port->adapter;
-	struct ct_hdr *header = (struct ct_hdr *)buffer;
-	struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
-	struct zfcp_san_dbf_record_ct *ct = &rec->type.ct;
-	unsigned long flags;
-
-	spin_lock_irqsave(&adapter->san_dbf_lock, flags);
-	memset(rec, 0, sizeof(struct zfcp_san_dbf_record));
-	strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
-	rec->fsf_reqid = (unsigned long)fsf_req;
-	rec->fsf_seqno = fsf_req->seq_no;
-	rec->s_id = s_id;
-	rec->d_id = d_id;
-	if (strncmp(tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
-		ct->type.request.cmd_req_code = header->cmd_rsp_code;
-		ct->type.request.revision = header->revision;
-		ct->type.request.gs_type = header->gs_type;
-		ct->type.request.gs_subtype = header->gs_subtype;
-		ct->type.request.options = header->options;
-		ct->type.request.max_res_size = header->max_res_size;
-	} else if (strncmp(tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
-		ct->type.response.cmd_rsp_code = header->cmd_rsp_code;
-		ct->type.response.revision = header->revision;
-		ct->type.response.reason_code = header->reason_code;
-		ct->type.response.reason_code_expl = header->reason_code_expl;
-		ct->type.response.vendor_unique = header->vendor_unique;
-	}
-	ct->payload_size =
-	    min(buflen - (int)sizeof(struct ct_hdr), ZFCP_DBF_CT_PAYLOAD);
-	memcpy(ct->payload, buffer + sizeof(struct ct_hdr), ct->payload_size);
-	debug_event(adapter->san_dbf, 3,
-		    rec, sizeof(struct zfcp_san_dbf_record));
-	spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
-}
-
 void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
 {
 	struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
 	struct zfcp_port *port = ct->port;
 	struct zfcp_adapter *adapter = port->adapter;
+	struct ct_hdr *hdr = zfcp_sg_to_address(ct->req);
+	struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf;
+	struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req;
+	unsigned long flags;
 
-	_zfcp_san_dbf_event_common_ct("octc", fsf_req,
-				      fc_host_port_id(adapter->scsi_host),
-				      port->d_id, zfcp_sg_to_address(ct->req),
-				      ct->req->length);
+	spin_lock_irqsave(&adapter->san_dbf_lock, flags);
+	memset(r, 0, sizeof(*r));
+	strncpy(r->tag, "octc", ZFCP_DBF_TAG_SIZE);
+	r->fsf_reqid = (unsigned long)fsf_req;
+	r->fsf_seqno = fsf_req->seq_no;
+	r->s_id = fc_host_port_id(adapter->scsi_host);
+	r->d_id = port->d_id;
+	oct->cmd_req_code = hdr->cmd_rsp_code;
+	oct->revision = hdr->revision;
+	oct->gs_type = hdr->gs_type;
+	oct->gs_subtype = hdr->gs_subtype;
+	oct->options = hdr->options;
+	oct->max_res_size = hdr->max_res_size;
+	oct->len = min((int)ct->req->length - (int)sizeof(struct ct_hdr),
+		       ZFCP_DBF_CT_PAYLOAD);
+	memcpy(oct->payload, (void *)hdr + sizeof(struct ct_hdr), oct->len);
+	debug_event(adapter->san_dbf, 3, r, sizeof(*r));
+	spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
 }
 
 void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
@@ -881,11 +848,28 @@ void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
 	struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
 	struct zfcp_port *port = ct->port;
 	struct zfcp_adapter *adapter = port->adapter;
+	struct ct_hdr *hdr = zfcp_sg_to_address(ct->resp);
+	struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf;
+	struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp;
+	unsigned long flags;
 
-	_zfcp_san_dbf_event_common_ct("rctc", fsf_req, port->d_id,
-				      fc_host_port_id(adapter->scsi_host),
-				      zfcp_sg_to_address(ct->resp),
-				      ct->resp->length);
+	spin_lock_irqsave(&adapter->san_dbf_lock, flags);
+	memset(r, 0, sizeof(*r));
+	strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE);
+	r->fsf_reqid = (unsigned long)fsf_req;
+	r->fsf_seqno = fsf_req->seq_no;
+	r->s_id = port->d_id;
+	r->d_id = fc_host_port_id(adapter->scsi_host);
+	rct->cmd_rsp_code = hdr->cmd_rsp_code;
+	rct->revision = hdr->revision;
+	rct->reason_code = hdr->reason_code;
+	rct->expl = hdr->reason_code_expl;
+	rct->vendor_unique = hdr->vendor_unique;
+	rct->len = min((int)ct->resp->length - (int)sizeof(struct ct_hdr),
+		       ZFCP_DBF_CT_PAYLOAD);
+	memcpy(rct->payload, (void *)hdr + sizeof(struct ct_hdr), rct->len);
+	debug_event(adapter->san_dbf, 3, r, sizeof(*r));
+	spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
 }
 
 static void
@@ -898,13 +882,13 @@ _zfcp_san_dbf_event_common_els(const char *tag, int level,
 	unsigned long flags;
 
 	spin_lock_irqsave(&adapter->san_dbf_lock, flags);
-	memset(rec, 0, sizeof(struct zfcp_san_dbf_record));
+	memset(rec, 0, sizeof(*rec));
 	strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
 	rec->fsf_reqid = (unsigned long)fsf_req;
 	rec->fsf_seqno = fsf_req->seq_no;
 	rec->s_id = s_id;
 	rec->d_id = d_id;
-	rec->type.els.ls_code = ls_code;
+	rec->u.els.ls_code = ls_code;
 	debug_event(adapter->san_dbf, level, rec, sizeof(*rec));
 	zfcp_dbf_hexdump(adapter->san_dbf, rec, sizeof(*rec), level,
 			 buffer, min(buflen, ZFCP_DBF_ELS_MAX_PAYLOAD));
@@ -967,42 +951,33 @@ zfcp_san_dbf_view_format(debug_info_t * id, struct debug_view *view,
 	zfcp_dbf_out(&p, "d_id", "0x%06x", r->d_id);
 
 	if (strncmp(r->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
-		/* FIXME: struct zfcp_dbf_ct_req *ct = ...; */
-		zfcp_dbf_out(&p, "cmd_req_code", "0x%04x",
-			     r->type.ct.type.request.cmd_req_code);
-		zfcp_dbf_out(&p, "revision", "0x%02x",
-			     r->type.ct.type.request.revision);
-		zfcp_dbf_out(&p, "gs_type", "0x%02x",
-			     r->type.ct.type.request.gs_type);
-		zfcp_dbf_out(&p, "gs_subtype", "0x%02x",
-			     r->type.ct.type.request.gs_subtype);
-		zfcp_dbf_out(&p, "options", "0x%02x",
-			     r->type.ct.type.request.options);
-		zfcp_dbf_out(&p, "max_res_size", "0x%04x",
-			     r->type.ct.type.request.max_res_size);
-		total = r->type.ct.payload_size;
-		buffer = r->type.ct.payload;
+		struct zfcp_san_dbf_record_ct_request *ct = &r->u.ct_req;
+		zfcp_dbf_out(&p, "cmd_req_code", "0x%04x", ct->cmd_req_code);
+		zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
+		zfcp_dbf_out(&p, "gs_type", "0x%02x", ct->gs_type);
+		zfcp_dbf_out(&p, "gs_subtype", "0x%02x", ct->gs_subtype);
+		zfcp_dbf_out(&p, "options", "0x%02x", ct->options);
+		zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
+		total = ct->len;
+		buffer = ct->payload;
 		buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
 	} else if (strncmp(r->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
-		zfcp_dbf_out(&p, "cmd_rsp_code", "0x%04x",
-			     r->type.ct.type.response.cmd_rsp_code);
-		zfcp_dbf_out(&p, "revision", "0x%02x",
-			     r->type.ct.type.response.revision);
-		zfcp_dbf_out(&p, "reason_code", "0x%02x",
-			     r->type.ct.type.response.reason_code);
-		zfcp_dbf_out(&p, "reason_code_expl", "0x%02x",
-			     r->type.ct.type.response.reason_code_expl);
-		zfcp_dbf_out(&p, "vendor_unique", "0x%02x",
-			     r->type.ct.type.response.vendor_unique);
-		total = r->type.ct.payload_size;
-		buffer = r->type.ct.payload;
+		struct zfcp_san_dbf_record_ct_response *ct = &r->u.ct_resp;
+		zfcp_dbf_out(&p, "cmd_rsp_code", "0x%04x", ct->cmd_rsp_code);
+		zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
+		zfcp_dbf_out(&p, "reason_code", "0x%02x", ct->reason_code);
+		zfcp_dbf_out(&p, "reason_code_expl", "0x%02x", ct->expl);
+		zfcp_dbf_out(&p, "vendor_unique", "0x%02x", ct->vendor_unique);
+		total = ct->len;
+		buffer = ct->payload;
 		buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
 	} else if (strncmp(r->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
 		   strncmp(r->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
 		   strncmp(r->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
-		zfcp_dbf_out(&p, "ls_code", "0x%02x", r->type.els.ls_code);
-		total = r->type.els.payload_size;
-		buffer = r->type.els.payload;
+		struct zfcp_san_dbf_record_els *els = &r->u.els;
+		zfcp_dbf_out(&p, "ls_code", "0x%02x", els->ls_code);
+		total = els->len;
+		buffer = els->payload;
 		buflen = min(total, ZFCP_DBF_ELS_PAYLOAD);
 	}
 
@@ -1038,7 +1013,7 @@ _zfcp_scsi_dbf_event_common(const char *tag, const char *tag2, int level,
 
 	spin_lock_irqsave(&adapter->scsi_dbf_lock, flags);
 	do {
-		memset(rec, 0, sizeof(struct zfcp_scsi_dbf_record));
+		memset(rec, 0, sizeof(*rec));
 		if (offset == 0) {
 			strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
 			strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
@@ -1064,20 +1039,16 @@ _zfcp_scsi_dbf_event_common(const char *tag, const char *tag2, int level,
 				fcp_sns_info =
 				    zfcp_get_fcp_sns_info_ptr(fcp_rsp);
 
-				rec->type.fcp.rsp_validity =
-				    fcp_rsp->validity.value;
-				rec->type.fcp.rsp_scsi_status =
-				    fcp_rsp->scsi_status;
-				rec->type.fcp.rsp_resid = fcp_rsp->fcp_resid;
+				rec->rsp_validity = fcp_rsp->validity.value;
+				rec->rsp_scsi_status = fcp_rsp->scsi_status;
+				rec->rsp_resid = fcp_rsp->fcp_resid;
 				if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
-					rec->type.fcp.rsp_code =
-					    *(fcp_rsp_info + 3);
+					rec->rsp_code = *(fcp_rsp_info + 3);
 				if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
 					buflen = min((int)fcp_rsp->fcp_sns_len,
 						     ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
-					rec->type.fcp.sns_info_len = buflen;
-					memcpy(rec->type.fcp.sns_info,
-					       fcp_sns_info,
+					rec->sns_info_len = buflen;
+					memcpy(rec->sns_info, fcp_sns_info,
 					       min(buflen,
 						   ZFCP_DBF_SCSI_FCP_SNS_INFO));
 					offset += min(buflen,
@@ -1088,7 +1059,7 @@ _zfcp_scsi_dbf_event_common(const char *tag, const char *tag2, int level,
 				rec->fsf_seqno = fsf_req->seq_no;
 				rec->fsf_issued = fsf_req->issued;
 			}
-			rec->type.old_fsf_reqid = old_req_id;
+			rec->old_fsf_reqid = old_req_id;
 		} else {
 			strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
 			dump->total_size = buflen;
@@ -1100,8 +1071,7 @@ _zfcp_scsi_dbf_event_common(const char *tag, const char *tag2, int level,
 			memcpy(dump->data, fcp_sns_info + offset, dump->size);
 			offset += dump->size;
 		}
-		debug_event(adapter->scsi_dbf, level,
-			    rec, sizeof(struct zfcp_scsi_dbf_record));
+		debug_event(adapter->scsi_dbf, level, rec, sizeof(*rec));
 	} while (offset < buflen);
 	spin_unlock_irqrestore(&adapter->scsi_dbf_lock, flags);
 }
@@ -1159,28 +1129,23 @@ zfcp_scsi_dbf_view_format(debug_info_t * id, struct debug_view *view,
 	zfcp_dbf_out(&p, "scsi_retries", "0x%02x", r->scsi_retries);
 	zfcp_dbf_out(&p, "scsi_allowed", "0x%02x", r->scsi_allowed);
 	if (strncmp(r->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0)
-		zfcp_dbf_out(&p, "old_fsf_reqid", "0x%0Lx",
-			     r->type.old_fsf_reqid);
+		zfcp_dbf_out(&p, "old_fsf_reqid", "0x%0Lx", r->old_fsf_reqid);
 	zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
 	zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
 	zfcp_dbf_timestamp(r->fsf_issued, &t);
 	zfcp_dbf_out(&p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
 
 	if (strncmp(r->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
-		zfcp_dbf_out(&p, "fcp_rsp_validity", "0x%02x",
-			     r->type.fcp.rsp_validity);
-		zfcp_dbf_out(&p, "fcp_rsp_scsi_status",
-			     "0x%02x", r->type.fcp.rsp_scsi_status);
-		zfcp_dbf_out(&p, "fcp_rsp_resid", "0x%08x",
-			     r->type.fcp.rsp_resid);
-		zfcp_dbf_out(&p, "fcp_rsp_code", "0x%08x",
-			     r->type.fcp.rsp_code);
-		zfcp_dbf_out(&p, "fcp_sns_info_len", "0x%08x",
-			     r->type.fcp.sns_info_len);
-		zfcp_dbf_outd(&p, "fcp_sns_info", r->type.fcp.sns_info,
-			      min((int)r->type.fcp.sns_info_len,
+		zfcp_dbf_out(&p, "fcp_rsp_validity", "0x%02x", r->rsp_validity);
+		zfcp_dbf_out(&p, "fcp_rsp_scsi_status", "0x%02x",
+			     r->rsp_scsi_status);
+		zfcp_dbf_out(&p, "fcp_rsp_resid", "0x%08x", r->rsp_resid);
+		zfcp_dbf_out(&p, "fcp_rsp_code", "0x%08x", r->rsp_code);
+		zfcp_dbf_out(&p, "fcp_sns_info_len", "0x%08x", r->sns_info_len);
+		zfcp_dbf_outd(&p, "fcp_sns_info", r->sns_info,
+			      min((int)r->sns_info_len,
 			      ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
-			      r->type.fcp.sns_info_len);
+			      r->sns_info_len);
 	}
 	p += sprintf(p, "\n");
 	return p - out_buf;

drivers/s390/scsi/zfcp_dbf.h

@@ -104,9 +104,9 @@ struct zfcp_hba_dbf_record_response {
 	u64 erp_action;
 	union {
 		struct {
-			u64 scsi_cmnd;
-			u64 scsi_serial;
-		} send_fcp;
+			u64 cmnd;
+			u64 serial;
+		} fcp;
 		struct {
 			u64 wwpn;
 			u32 d_id;
@@ -121,8 +121,8 @@ struct zfcp_hba_dbf_record_response {
 		struct {
 			u32 d_id;
 			u8 ls_code;
-		} send_els;
-	} data;
+		} els;
+	} u;
 } __attribute__ ((packed));
 
 struct zfcp_hba_dbf_record_status {
@@ -154,35 +154,34 @@ struct zfcp_hba_dbf_record {
 		struct zfcp_hba_dbf_record_response response;
 		struct zfcp_hba_dbf_record_status status;
 		struct zfcp_hba_dbf_record_qdio qdio;
-	} type;
+	} u;
 } __attribute__ ((packed));
 
-struct zfcp_san_dbf_record_ct {
-	union {
-		struct {
-			u16 cmd_req_code;
-			u8 revision;
-			u8 gs_type;
-			u8 gs_subtype;
-			u8 options;
-			u16 max_res_size;
-		} request;
-		struct {
-			u16 cmd_rsp_code;
-			u8 revision;
-			u8 reason_code;
-			u8 reason_code_expl;
-			u8 vendor_unique;
-		} response;
-	} type;
-	u32 payload_size;
+struct zfcp_san_dbf_record_ct_request {
+	u16 cmd_req_code;
+	u8 revision;
+	u8 gs_type;
+	u8 gs_subtype;
+	u8 options;
+	u16 max_res_size;
+	u32 len;
 #define ZFCP_DBF_CT_PAYLOAD	24
 	u8 payload[ZFCP_DBF_CT_PAYLOAD];
 } __attribute__ ((packed));
 
+struct zfcp_san_dbf_record_ct_response {
+	u16 cmd_rsp_code;
+	u8 revision;
+	u8 reason_code;
+	u8 expl;
+	u8 vendor_unique;
+	u32 len;
+	u8 payload[ZFCP_DBF_CT_PAYLOAD];
+} __attribute__ ((packed));
+
 struct zfcp_san_dbf_record_els {
 	u8 ls_code;
-	u32 payload_size;
+	u32 len;
 #define ZFCP_DBF_ELS_PAYLOAD	32
 #define ZFCP_DBF_ELS_MAX_PAYLOAD 1024
 	u8 payload[ZFCP_DBF_ELS_PAYLOAD];
@@ -195,9 +194,10 @@ struct zfcp_san_dbf_record {
 	u32 s_id;
 	u32 d_id;
 	union {
-		struct zfcp_san_dbf_record_ct ct;
+		struct zfcp_san_dbf_record_ct_request ct_req;
+		struct zfcp_san_dbf_record_ct_response ct_resp;
 		struct zfcp_san_dbf_record_els els;
-	} type;
+	} u;
 } __attribute__ ((packed));
 
 struct zfcp_scsi_dbf_record {
@@ -215,19 +215,15 @@ struct zfcp_scsi_dbf_record {
 	u64 fsf_reqid;
 	u32 fsf_seqno;
 	u64 fsf_issued;
-	union {
-		u64 old_fsf_reqid;
-		struct {
-			u8 rsp_validity;
-			u8 rsp_scsi_status;
-			u32 rsp_resid;
-			u8 rsp_code;
+	u64 old_fsf_reqid;
+	u8 rsp_validity;
+	u8 rsp_scsi_status;
+	u32 rsp_resid;
+	u8 rsp_code;
 #define ZFCP_DBF_SCSI_FCP_SNS_INFO	16
 #define ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO	256
-			u32 sns_info_len;
-			u8 sns_info[ZFCP_DBF_SCSI_FCP_SNS_INFO];
-		} fcp;
-	} type;
+	u32 sns_info_len;
+	u8 sns_info[ZFCP_DBF_SCSI_FCP_SNS_INFO];
 } __attribute__ ((packed));
 
 #endif /* ZFCP_DBF_H */