1 files changed, 248 insertions, 132 deletions

diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index 86fd905df48..ca28e1c6611 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -3,7 +3,7 @@
  *
  * Fibre Channel related functions for the zfcp device driver.
  *
- * Copyright IBM Corporation 2008, 2010
+ * Copyright IBM Corp. 2008, 2010
  */
 
 #define KMSG_COMPONENT "zfcp"
@@ -11,11 +11,14 @@
 
 #include <linux/types.h>
 #include <linux/slab.h>
+#include <linux/utsname.h>
 #include <scsi/fc/fc_els.h>
 #include <scsi/libfc.h>
 #include "zfcp_ext.h"
 #include "zfcp_fc.h"
 
+struct kmem_cache *zfcp_fc_req_cache;
+
 static u32 zfcp_fc_rscn_range_mask[] = {
 	[ELS_ADDR_FMT_PORT]		= 0xFFFFFF,
 	[ELS_ADDR_FMT_AREA]		= 0xFFFF00,
@@ -23,6 +26,27 @@ static u32 zfcp_fc_rscn_range_mask[] = {
 	[ELS_ADDR_FMT_FAB]		= 0x000000,
 };
 
+static bool no_auto_port_rescan;
+module_param_named(no_auto_port_rescan, no_auto_port_rescan, bool, 0600);
+MODULE_PARM_DESC(no_auto_port_rescan,
+		 "no automatic port_rescan (default off)");
+
+void zfcp_fc_conditional_port_scan(struct zfcp_adapter *adapter)
+{
+	if (no_auto_port_rescan)
+		return;
+
+	queue_work(adapter->work_queue, &adapter->scan_work);
+}
+
+void zfcp_fc_inverse_conditional_port_scan(struct zfcp_adapter *adapter)
+{
+	if (!no_auto_port_rescan)
+		return;
+
+	queue_work(adapter->work_queue, &adapter->scan_work);
+}
+
 /**
  * zfcp_fc_post_event - post event to userspace via fc_transport
  * @work: work struct with enqueued events
@@ -174,7 +198,7 @@ static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range,
 		if (!port->d_id)
 			zfcp_erp_port_reopen(port,
 					     ZFCP_STATUS_COMMON_ERP_FAILED,
-					     "fcrscn1", NULL);
+					     "fcrscn1");
 	}
 	read_unlock_irqrestore(&adapter->port_list_lock, flags);
 }
@@ -203,7 +227,7 @@ static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req)
 		zfcp_fc_enqueue_event(fsf_req->adapter, FCH_EVT_RSCN,
 				      *(u32 *)page);
 	}
-	queue_work(fsf_req->adapter->work_queue, &fsf_req->adapter->scan_work);
+	zfcp_fc_conditional_port_scan(fsf_req->adapter);
 }
 
 static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, u64 wwpn)
@@ -215,7 +239,7 @@ static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, u64 wwpn)
 	read_lock_irqsave(&adapter->port_list_lock, flags);
 	list_for_each_entry(port, &adapter->port_list, list)
 		if (port->wwpn == wwpn) {
-			zfcp_erp_port_forced_reopen(port, 0, "fciwwp1", req);
+			zfcp_erp_port_forced_reopen(port, 0, "fciwwp1");
 			break;
 		}
 	read_unlock_irqrestore(&adapter->port_list_lock, flags);
@@ -251,7 +275,7 @@ void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req)
 		(struct fsf_status_read_buffer *) fsf_req->data;
 	unsigned int els_type = status_buffer->payload.data[0];
 
-	zfcp_dbf_san_incoming_els(fsf_req);
+	zfcp_dbf_san_in_els("fciels1", fsf_req);
 	if (els_type == ELS_PLOGI)
 		zfcp_fc_incoming_plogi(fsf_req);
 	else if (els_type == ELS_LOGO)
@@ -260,24 +284,18 @@ void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req)
 		zfcp_fc_incoming_rscn(fsf_req);
 }
 
-static void zfcp_fc_ns_gid_pn_eval(void *data)
+static void zfcp_fc_ns_gid_pn_eval(struct zfcp_fc_req *fc_req)
 {
-	struct zfcp_fc_gid_pn *gid_pn = data;
-	struct zfcp_fsf_ct_els *ct = &gid_pn->ct;
-	struct zfcp_fc_gid_pn_req *gid_pn_req = sg_virt(ct->req);
-	struct zfcp_fc_gid_pn_resp *gid_pn_resp = sg_virt(ct->resp);
-	struct zfcp_port *port = gid_pn->port;
+	struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els;
+	struct zfcp_fc_gid_pn_rsp *gid_pn_rsp = &fc_req->u.gid_pn.rsp;
 
-	if (ct->status)
+	if (ct_els->status)
 		return;
-	if (gid_pn_resp->ct_hdr.ct_cmd != FC_FS_ACC)
+	if (gid_pn_rsp->ct_hdr.ct_cmd != FC_FS_ACC)
 		return;
 
-	/* paranoia */
-	if (gid_pn_req->gid_pn.fn_wwpn != port->wwpn)
-		return;
 	/* looks like a valid d_id */
-	port->d_id = ntoh24(gid_pn_resp->gid_pn.fp_fid);
+	ct_els->port->d_id = ntoh24(gid_pn_rsp->gid_pn.fp_fid);
 }
 
 static void zfcp_fc_complete(void *data)
@@ -285,69 +303,73 @@ static void zfcp_fc_complete(void *data)
 	complete(data);
 }
 
+static void zfcp_fc_ct_ns_init(struct fc_ct_hdr *ct_hdr, u16 cmd, u16 mr_size)
+{
+	ct_hdr->ct_rev = FC_CT_REV;
+	ct_hdr->ct_fs_type = FC_FST_DIR;
+	ct_hdr->ct_fs_subtype = FC_NS_SUBTYPE;
+	ct_hdr->ct_cmd = cmd;
+	ct_hdr->ct_mr_size = mr_size / 4;
+}
+
 static int zfcp_fc_ns_gid_pn_request(struct zfcp_port *port,
-				     struct zfcp_fc_gid_pn *gid_pn)
+				     struct zfcp_fc_req *fc_req)
 {
 	struct zfcp_adapter *adapter = port->adapter;
 	DECLARE_COMPLETION_ONSTACK(completion);
+	struct zfcp_fc_gid_pn_req *gid_pn_req = &fc_req->u.gid_pn.req;
+	struct zfcp_fc_gid_pn_rsp *gid_pn_rsp = &fc_req->u.gid_pn.rsp;
 	int ret;
 
 	/* setup parameters for send generic command */
-	gid_pn->port = port;
-	gid_pn->ct.handler = zfcp_fc_complete;
-	gid_pn->ct.handler_data = &completion;
-	gid_pn->ct.req = &gid_pn->sg_req;
-	gid_pn->ct.resp = &gid_pn->sg_resp;
-	sg_init_one(&gid_pn->sg_req, &gid_pn->gid_pn_req,
-		    sizeof(struct zfcp_fc_gid_pn_req));
-	sg_init_one(&gid_pn->sg_resp, &gid_pn->gid_pn_resp,
-		    sizeof(struct zfcp_fc_gid_pn_resp));
-
-	/* setup nameserver request */
-	gid_pn->gid_pn_req.ct_hdr.ct_rev = FC_CT_REV;
-	gid_pn->gid_pn_req.ct_hdr.ct_fs_type = FC_FST_DIR;
-	gid_pn->gid_pn_req.ct_hdr.ct_fs_subtype = FC_NS_SUBTYPE;
-	gid_pn->gid_pn_req.ct_hdr.ct_options = 0;
-	gid_pn->gid_pn_req.ct_hdr.ct_cmd = FC_NS_GID_PN;
-	gid_pn->gid_pn_req.ct_hdr.ct_mr_size = ZFCP_FC_CT_SIZE_PAGE / 4;
-	gid_pn->gid_pn_req.gid_pn.fn_wwpn = port->wwpn;
-
-	ret = zfcp_fsf_send_ct(&adapter->gs->ds, &gid_pn->ct,
+	fc_req->ct_els.port = port;
+	fc_req->ct_els.handler = zfcp_fc_complete;
+	fc_req->ct_els.handler_data = &completion;
+	fc_req->ct_els.req = &fc_req->sg_req;
+	fc_req->ct_els.resp = &fc_req->sg_rsp;
+	sg_init_one(&fc_req->sg_req, gid_pn_req, sizeof(*gid_pn_req));
+	sg_init_one(&fc_req->sg_rsp, gid_pn_rsp, sizeof(*gid_pn_rsp));
+
+	zfcp_fc_ct_ns_init(&gid_pn_req->ct_hdr,
+			   FC_NS_GID_PN, ZFCP_FC_CT_SIZE_PAGE);
+	gid_pn_req->gid_pn.fn_wwpn = port->wwpn;
+
+	ret = zfcp_fsf_send_ct(&adapter->gs->ds, &fc_req->ct_els,
 			       adapter->pool.gid_pn_req,
 			       ZFCP_FC_CTELS_TMO);
 	if (!ret) {
 		wait_for_completion(&completion);
-		zfcp_fc_ns_gid_pn_eval(gid_pn);
+		zfcp_fc_ns_gid_pn_eval(fc_req);
 	}
 	return ret;
 }
 
 /**
- * zfcp_fc_ns_gid_pn_request - initiate GID_PN nameserver request
+ * zfcp_fc_ns_gid_pn - initiate GID_PN nameserver request
  * @port: port where GID_PN request is needed
  * return: -ENOMEM on error, 0 otherwise
  */
 static int zfcp_fc_ns_gid_pn(struct zfcp_port *port)
 {
 	int ret;
-	struct zfcp_fc_gid_pn *gid_pn;
+	struct zfcp_fc_req *fc_req;
 	struct zfcp_adapter *adapter = port->adapter;
 
-	gid_pn = mempool_alloc(adapter->pool.gid_pn, GFP_ATOMIC);
-	if (!gid_pn)
+	fc_req = mempool_alloc(adapter->pool.gid_pn, GFP_ATOMIC);
+	if (!fc_req)
 		return -ENOMEM;
 
-	memset(gid_pn, 0, sizeof(*gid_pn));
+	memset(fc_req, 0, sizeof(*fc_req));
 
 	ret = zfcp_fc_wka_port_get(&adapter->gs->ds);
 	if (ret)
 		goto out;
 
-	ret = zfcp_fc_ns_gid_pn_request(port, gid_pn);
+	ret = zfcp_fc_ns_gid_pn_request(port, fc_req);
 
 	zfcp_fc_wka_port_put(&adapter->gs->ds);
 out:
-	mempool_free(gid_pn, adapter->pool.gid_pn);
+	mempool_free(fc_req, adapter->pool.gid_pn);
 	return ret;
 }
 
@@ -360,7 +382,7 @@ void zfcp_fc_port_did_lookup(struct work_struct *work)
 	ret = zfcp_fc_ns_gid_pn(port);
 	if (ret) {
 		/* could not issue gid_pn for some reason */
-		zfcp_erp_adapter_reopen(port->adapter, 0, "fcgpn_1", NULL);
+		zfcp_erp_adapter_reopen(port->adapter, 0, "fcgpn_1");
 		goto out;
 	}
 
@@ -369,7 +391,7 @@ void zfcp_fc_port_did_lookup(struct work_struct *work)
 		goto out;
 	}
 
-	zfcp_erp_port_reopen(port, 0, "fcgpn_3", NULL);
+	zfcp_erp_port_reopen(port, 0, "fcgpn_3");
 out:
 	put_device(&port->dev);
 }
@@ -419,14 +441,14 @@ void zfcp_fc_plogi_evaluate(struct zfcp_port *port, struct fc_els_flogi *plogi)
 
 static void zfcp_fc_adisc_handler(void *data)
 {
-	struct zfcp_fc_els_adisc *adisc = data;
-	struct zfcp_port *port = adisc->els.port;
-	struct fc_els_adisc *adisc_resp = &adisc->adisc_resp;
+	struct zfcp_fc_req *fc_req = data;
+	struct zfcp_port *port = fc_req->ct_els.port;
+	struct fc_els_adisc *adisc_resp = &fc_req->u.adisc.rsp;
 
-	if (adisc->els.status) {
+	if (fc_req->ct_els.status) {
 		/* request rejected or timed out */
 		zfcp_erp_port_forced_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
-					    "fcadh_1", NULL);
+					    "fcadh_1");
 		goto out;
 	}
 
@@ -436,7 +458,7 @@ static void zfcp_fc_adisc_handler(void *data)
 	if ((port->wwpn != adisc_resp->adisc_wwpn) ||
 	    !(atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)) {
 		zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
-				     "fcadh_2", NULL);
+				     "fcadh_2");
 		goto out;
 	}
 
@@ -445,42 +467,42 @@ static void zfcp_fc_adisc_handler(void *data)
  out:
 	atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
 	put_device(&port->dev);
-	kmem_cache_free(zfcp_data.adisc_cache, adisc);
+	kmem_cache_free(zfcp_fc_req_cache, fc_req);
 }
 
 static int zfcp_fc_adisc(struct zfcp_port *port)
 {
-	struct zfcp_fc_els_adisc *adisc;
+	struct zfcp_fc_req *fc_req;
 	struct zfcp_adapter *adapter = port->adapter;
+	struct Scsi_Host *shost = adapter->scsi_host;
 	int ret;
 
-	adisc = kmem_cache_zalloc(zfcp_data.adisc_cache, GFP_ATOMIC);
-	if (!adisc)
+	fc_req = kmem_cache_zalloc(zfcp_fc_req_cache, GFP_ATOMIC);
+	if (!fc_req)
 		return -ENOMEM;
 
-	adisc->els.port = port;
-	adisc->els.req = &adisc->req;
-	adisc->els.resp = &adisc->resp;
-	sg_init_one(adisc->els.req, &adisc->adisc_req,
+	fc_req->ct_els.port = port;
+	fc_req->ct_els.req = &fc_req->sg_req;
+	fc_req->ct_els.resp = &fc_req->sg_rsp;
+	sg_init_one(&fc_req->sg_req, &fc_req->u.adisc.req,
 		    sizeof(struct fc_els_adisc));
-	sg_init_one(adisc->els.resp, &adisc->adisc_resp,
+	sg_init_one(&fc_req->sg_rsp, &fc_req->u.adisc.rsp,
 		    sizeof(struct fc_els_adisc));
 
-	adisc->els.handler = zfcp_fc_adisc_handler;
-	adisc->els.handler_data = adisc;
+	fc_req->ct_els.handler = zfcp_fc_adisc_handler;
+	fc_req->ct_els.handler_data = fc_req;
 
 	/* acc. to FC-FS, hard_nport_id in ADISC should not be set for ports
 	   without FC-AL-2 capability, so we don't set it */
-	adisc->adisc_req.adisc_wwpn = fc_host_port_name(adapter->scsi_host);
-	adisc->adisc_req.adisc_wwnn = fc_host_node_name(adapter->scsi_host);
-	adisc->adisc_req.adisc_cmd = ELS_ADISC;
-	hton24(adisc->adisc_req.adisc_port_id,
-	       fc_host_port_id(adapter->scsi_host));
+	fc_req->u.adisc.req.adisc_wwpn = fc_host_port_name(shost);
+	fc_req->u.adisc.req.adisc_wwnn = fc_host_node_name(shost);
+	fc_req->u.adisc.req.adisc_cmd = ELS_ADISC;
+	hton24(fc_req->u.adisc.req.adisc_port_id, fc_host_port_id(shost));
 
-	ret = zfcp_fsf_send_els(adapter, port->d_id, &adisc->els,
+	ret = zfcp_fsf_send_els(adapter, port->d_id, &fc_req->ct_els,
 				ZFCP_FC_CTELS_TMO);
 	if (ret)
-		kmem_cache_free(zfcp_data.adisc_cache, adisc);
+		kmem_cache_free(zfcp_fc_req_cache, fc_req);
 
 	return ret;
 }
@@ -507,7 +529,7 @@ void zfcp_fc_link_test_work(struct work_struct *work)
 
 	/* send of ADISC was not possible */
 	atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
-	zfcp_erp_port_forced_reopen(port, 0, "fcltwk1", NULL);
+	zfcp_erp_port_forced_reopen(port, 0, "fcltwk1");
 
 out:
 	put_device(&port->dev);
@@ -528,68 +550,42 @@ void zfcp_fc_test_link(struct zfcp_port *port)
 		put_device(&port->dev);
 }
 
-static void zfcp_free_sg_env(struct zfcp_fc_gpn_ft *gpn_ft, int buf_num)
+static struct zfcp_fc_req *zfcp_alloc_sg_env(int buf_num)
 {
-	struct scatterlist *sg = &gpn_ft->sg_req;
+	struct zfcp_fc_req *fc_req;
 
-	kmem_cache_free(zfcp_data.gpn_ft_cache, sg_virt(sg));
-	zfcp_sg_free_table(gpn_ft->sg_resp, buf_num);
-
-	kfree(gpn_ft);
-}
-
-static struct zfcp_fc_gpn_ft *zfcp_alloc_sg_env(int buf_num)
-{
-	struct zfcp_fc_gpn_ft *gpn_ft;
-	struct zfcp_fc_gpn_ft_req *req;
-
-	gpn_ft = kzalloc(sizeof(*gpn_ft), GFP_KERNEL);
-	if (!gpn_ft)
+	fc_req = kmem_cache_zalloc(zfcp_fc_req_cache, GFP_KERNEL);
+	if (!fc_req)
 		return NULL;
 
-	req = kmem_cache_zalloc(zfcp_data.gpn_ft_cache, GFP_KERNEL);
-	if (!req) {
-		kfree(gpn_ft);
-		gpn_ft = NULL;
-		goto out;
+	if (zfcp_sg_setup_table(&fc_req->sg_rsp, buf_num)) {
+		kmem_cache_free(zfcp_fc_req_cache, fc_req);
+		return NULL;
 	}
-	sg_init_one(&gpn_ft->sg_req, req, sizeof(*req));
 
-	if (zfcp_sg_setup_table(gpn_ft->sg_resp, buf_num)) {
-		zfcp_free_sg_env(gpn_ft, buf_num);
-		gpn_ft = NULL;
-	}
-out:
-	return gpn_ft;
-}
+	sg_init_one(&fc_req->sg_req, &fc_req->u.gpn_ft.req,
+		    sizeof(struct zfcp_fc_gpn_ft_req));
 
+	return fc_req;
+}
 
-static int zfcp_fc_send_gpn_ft(struct zfcp_fc_gpn_ft *gpn_ft,
+static int zfcp_fc_send_gpn_ft(struct zfcp_fc_req *fc_req,
 			       struct zfcp_adapter *adapter, int max_bytes)
 {
-	struct zfcp_fsf_ct_els *ct = &gpn_ft->ct;
-	struct zfcp_fc_gpn_ft_req *req = sg_virt(&gpn_ft->sg_req);
+	struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els;
+	struct zfcp_fc_gpn_ft_req *req = &fc_req->u.gpn_ft.req;
 	DECLARE_COMPLETION_ONSTACK(completion);
 	int ret;
 
-	/* prepare CT IU for GPN_FT */
-	req->ct_hdr.ct_rev = FC_CT_REV;
-	req->ct_hdr.ct_fs_type = FC_FST_DIR;
-	req->ct_hdr.ct_fs_subtype = FC_NS_SUBTYPE;
-	req->ct_hdr.ct_options = 0;
-	req->ct_hdr.ct_cmd = FC_NS_GPN_FT;
-	req->ct_hdr.ct_mr_size = max_bytes / 4;
-	req->gpn_ft.fn_domain_id_scope = 0;
-	req->gpn_ft.fn_area_id_scope = 0;
+	zfcp_fc_ct_ns_init(&req->ct_hdr, FC_NS_GPN_FT, max_bytes);
 	req->gpn_ft.fn_fc4_type = FC_TYPE_FCP;
 
-	/* prepare zfcp_send_ct */
-	ct->handler = zfcp_fc_complete;
-	ct->handler_data = &completion;
-	ct->req = &gpn_ft->sg_req;
-	ct->resp = gpn_ft->sg_resp;
+	ct_els->handler = zfcp_fc_complete;
+	ct_els->handler_data = &completion;
+	ct_els->req = &fc_req->sg_req;
+	ct_els->resp = &fc_req->sg_rsp;
 
-	ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct, NULL,
+	ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct_els, NULL,
 			       ZFCP_FC_CTELS_TMO);
 	if (!ret)
 		wait_for_completion(&completion);
@@ -610,11 +606,11 @@ static void zfcp_fc_validate_port(struct zfcp_port *port, struct list_head *lh)
 	list_move_tail(&port->list, lh);
 }
 
-static int zfcp_fc_eval_gpn_ft(struct zfcp_fc_gpn_ft *gpn_ft,
+static int zfcp_fc_eval_gpn_ft(struct zfcp_fc_req *fc_req,
 			       struct zfcp_adapter *adapter, int max_entries)
 {
-	struct zfcp_fsf_ct_els *ct = &gpn_ft->ct;
-	struct scatterlist *sg = gpn_ft->sg_resp;
+	struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els;
+	struct scatterlist *sg = &fc_req->sg_rsp;
 	struct fc_ct_hdr *hdr = sg_virt(sg);
 	struct fc_gpn_ft_resp *acc = sg_virt(sg);
 	struct zfcp_port *port, *tmp;
@@ -623,7 +619,7 @@ static int zfcp_fc_eval_gpn_ft(struct zfcp_fc_gpn_ft *gpn_ft,
 	u32 d_id;
 	int ret = 0, x, last = 0;
 
-	if (ct->status)
+	if (ct_els->status)
 		return -EIO;
 
 	if (hdr->ct_cmd != FC_FS_ACC) {
@@ -659,7 +655,7 @@ static int zfcp_fc_eval_gpn_ft(struct zfcp_fc_gpn_ft *gpn_ft,
 		port = zfcp_port_enqueue(adapter, acc->fp_wwpn,
 					 ZFCP_STATUS_COMMON_NOESC, d_id);
 		if (!IS_ERR(port))
-			zfcp_erp_port_reopen(port, 0, "fcegpf1", NULL);
+			zfcp_erp_port_reopen(port, 0, "fcegpf1");
 		else if (PTR_ERR(port) != -EEXIST)
 			ret = PTR_ERR(port);
 	}
@@ -671,8 +667,8 @@ static int zfcp_fc_eval_gpn_ft(struct zfcp_fc_gpn_ft *gpn_ft,
 	write_unlock_irqrestore(&adapter->port_list_lock, flags);
 
 	list_for_each_entry_safe(port, tmp, &remove_lh, list) {
-		zfcp_erp_port_shutdown(port, 0, "fcegpf2", NULL);
-		zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
+		zfcp_erp_port_shutdown(port, 0, "fcegpf2");
+		device_unregister(&port->dev);
 	}
 
 	return ret;
@@ -687,7 +683,7 @@ void zfcp_fc_scan_ports(struct work_struct *work)
 	struct zfcp_adapter *adapter = container_of(work, struct zfcp_adapter,
 						    scan_work);
 	int ret, i;
-	struct zfcp_fc_gpn_ft *gpn_ft;
+	struct zfcp_fc_req *fc_req;
 	int chain, max_entries, buf_num, max_bytes;
 
 	chain = adapter->adapter_features & FSF_FEATURE_ELS_CT_CHAINED_SBALS;
@@ -702,25 +698,145 @@ void zfcp_fc_scan_ports(struct work_struct *work)
 	if (zfcp_fc_wka_port_get(&adapter->gs->ds))
 		return;
 
-	gpn_ft = zfcp_alloc_sg_env(buf_num);
-	if (!gpn_ft)
+	fc_req = zfcp_alloc_sg_env(buf_num);
+	if (!fc_req)
 		goto out;
 
 	for (i = 0; i < 3; i++) {
-		ret = zfcp_fc_send_gpn_ft(gpn_ft, adapter, max_bytes);
+		ret = zfcp_fc_send_gpn_ft(fc_req, adapter, max_bytes);
 		if (!ret) {
-			ret = zfcp_fc_eval_gpn_ft(gpn_ft, adapter, max_entries);
+			ret = zfcp_fc_eval_gpn_ft(fc_req, adapter, max_entries);
 			if (ret == -EAGAIN)
 				ssleep(1);
 			else
 				break;
 		}
 	}
-	zfcp_free_sg_env(gpn_ft, buf_num);
+	zfcp_sg_free_table(&fc_req->sg_rsp, buf_num);
+	kmem_cache_free(zfcp_fc_req_cache, fc_req);
 out:
 	zfcp_fc_wka_port_put(&adapter->gs->ds);
 }
 
+static int zfcp_fc_gspn(struct zfcp_adapter *adapter,
+			struct zfcp_fc_req *fc_req)
+{
+	DECLARE_COMPLETION_ONSTACK(completion);
+	char devno[] = "DEVNO:";
+	struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els;
+	struct zfcp_fc_gspn_req *gspn_req = &fc_req->u.gspn.req;
+	struct zfcp_fc_gspn_rsp *gspn_rsp = &fc_req->u.gspn.rsp;
+	int ret;
+
+	zfcp_fc_ct_ns_init(&gspn_req->ct_hdr, FC_NS_GSPN_ID,
+			   FC_SYMBOLIC_NAME_SIZE);
+	hton24(gspn_req->gspn.fp_fid, fc_host_port_id(adapter->scsi_host));
+
+	sg_init_one(&fc_req->sg_req, gspn_req, sizeof(*gspn_req));
+	sg_init_one(&fc_req->sg_rsp, gspn_rsp, sizeof(*gspn_rsp));
+
+	ct_els->handler = zfcp_fc_complete;
+	ct_els->handler_data = &completion;
+	ct_els->req = &fc_req->sg_req;
+	ct_els->resp = &fc_req->sg_rsp;
+
+	ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct_els, NULL,
+			       ZFCP_FC_CTELS_TMO);
+	if (ret)
+		return ret;
+
+	wait_for_completion(&completion);
+	if (ct_els->status)
+		return ct_els->status;
+
+	if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_NPIV &&
+	    !(strstr(gspn_rsp->gspn.fp_name, devno)))
+		snprintf(fc_host_symbolic_name(adapter->scsi_host),
+			 FC_SYMBOLIC_NAME_SIZE, "%s%s %s NAME: %s",
+			 gspn_rsp->gspn.fp_name, devno,
+			 dev_name(&adapter->ccw_device->dev),
+			 init_utsname()->nodename);
+	else
+		strlcpy(fc_host_symbolic_name(adapter->scsi_host),
+			gspn_rsp->gspn.fp_name, FC_SYMBOLIC_NAME_SIZE);
+
+	return 0;
+}
+
+static void zfcp_fc_rspn(struct zfcp_adapter *adapter,
+			 struct zfcp_fc_req *fc_req)
+{
+	DECLARE_COMPLETION_ONSTACK(completion);
+	struct Scsi_Host *shost = adapter->scsi_host;
+	struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els;
+	struct zfcp_fc_rspn_req *rspn_req = &fc_req->u.rspn.req;
+	struct fc_ct_hdr *rspn_rsp = &fc_req->u.rspn.rsp;
+	int ret, len;
+
+	zfcp_fc_ct_ns_init(&rspn_req->ct_hdr, FC_NS_RSPN_ID,
+			   FC_SYMBOLIC_NAME_SIZE);
+	hton24(rspn_req->rspn.fr_fid.fp_fid, fc_host_port_id(shost));
+	len = strlcpy(rspn_req->rspn.fr_name, fc_host_symbolic_name(shost),
+		      FC_SYMBOLIC_NAME_SIZE);
+	rspn_req->rspn.fr_name_len = len;
+
+	sg_init_one(&fc_req->sg_req, rspn_req, sizeof(*rspn_req));
+	sg_init_one(&fc_req->sg_rsp, rspn_rsp, sizeof(*rspn_rsp));
+
+	ct_els->handler = zfcp_fc_complete;
+	ct_els->handler_data = &completion;
+	ct_els->req = &fc_req->sg_req;
+	ct_els->resp = &fc_req->sg_rsp;
+
+	ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct_els, NULL,
+			       ZFCP_FC_CTELS_TMO);
+	if (!ret)
+		wait_for_completion(&completion);
+}
+
+/**
+ * zfcp_fc_sym_name_update - Retrieve and update the symbolic port name
+ * @work: ns_up_work of the adapter where to update the symbolic port name
+ *
+ * Retrieve the current symbolic port name that may have been set by
+ * the hardware using the GSPN request and update the fc_host
+ * symbolic_name sysfs attribute. When running in NPIV mode (and hence
+ * the port name is unique for this system), update the symbolic port
+ * name to add Linux specific information and update the FC nameserver
+ * using the RSPN request.
+ */
+void zfcp_fc_sym_name_update(struct work_struct *work)
+{
+	struct zfcp_adapter *adapter = container_of(work, struct zfcp_adapter,
+						    ns_up_work);
+	int ret;
+	struct zfcp_fc_req *fc_req;
+
+	if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT &&
+	    fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV)
+		return;
+
+	fc_req = kmem_cache_zalloc(zfcp_fc_req_cache, GFP_KERNEL);
+	if (!fc_req)
+		return;
+
+	ret = zfcp_fc_wka_port_get(&adapter->gs->ds);
+	if (ret)
+		goto out_free;
+
+	ret = zfcp_fc_gspn(adapter, fc_req);
+	if (ret || fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV)
+		goto out_ds_put;
+
+	memset(fc_req, 0, sizeof(*fc_req));
+	zfcp_fc_rspn(adapter, fc_req);
+
+out_ds_put:
+	zfcp_fc_wka_port_put(&adapter->gs->ds);
+out_free:
+	kmem_cache_free(zfcp_fc_req_cache, fc_req);
+}
+
 static void zfcp_fc_ct_els_job_handler(void *data)
 {
 	struct fc_bsg_job *job = data;