target: change core_tpg_register prototype

Remove the unneeded fabric_ptr argument, and change the type argument
to pass in a SPC protocol identifier.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

Documentation/target/tcm_mod_builder.py

@@ -238,8 +238,7 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name):
 	buf += "	tpg->" + fabric_mod_port + " = " + fabric_mod_port + ";\n"
 	buf += "	tpg->" + fabric_mod_port + "_tpgt = tpgt;\n\n"
 	buf += "	ret = core_tpg_register(&" + fabric_mod_name + "_ops, wwn,\n"
-	buf += "				&tpg->se_tpg, tpg,\n"
-	buf += "				TRANSPORT_TPG_TYPE_NORMAL);\n"
+	buf += "				&tpg->se_tpg, SCSI_PROTOCOL_SAS);\n"
 	buf += "	if (ret < 0) {\n"
 	buf += "		kfree(tpg);\n"
 	buf += "		return NULL;\n"

drivers/infiniband/ulp/srpt/ib_srpt.c

@@ -3791,7 +3791,7 @@ static struct se_portal_group *srpt_make_tpg(struct se_wwn *wwn,
 
 	/* Initialize sport->port_wwn and sport->port_tpg_1 */
 	res = core_tpg_register(&srpt_template, &sport->port_wwn,
-			&sport->port_tpg_1, sport, TRANSPORT_TPG_TYPE_NORMAL);
+			&sport->port_tpg_1, SCSI_PROTOCOL_SRP);
 	if (res)
 		return ERR_PTR(res);
 

drivers/scsi/qla2xxx/tcm_qla2xxx.c

@@ -1113,8 +1113,8 @@ static struct se_portal_group *tcm_qla2xxx_make_tpg(
 	tpg->tpg_attrib.cache_dynamic_acls = 1;
 	tpg->tpg_attrib.demo_mode_login_only = 1;
 
-	ret = core_tpg_register(&tcm_qla2xxx_ops, wwn,
-				&tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
+	ret = core_tpg_register(&tcm_qla2xxx_ops, wwn, &tpg->se_tpg,
+				SCSI_PROTOCOL_FCP);
 	if (ret < 0) {
 		kfree(tpg);
 		return NULL;
@@ -1233,8 +1233,8 @@ static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
 	tpg->tpg_attrib.cache_dynamic_acls = 1;
 	tpg->tpg_attrib.demo_mode_login_only = 1;
 
-	ret = core_tpg_register(&tcm_qla2xxx_npiv_ops, wwn,
-				&tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
+	ret = core_tpg_register(&tcm_qla2xxx_npiv_ops, wwn, &tpg->se_tpg,
+				SCSI_PROTOCOL_FCP);
 	if (ret < 0) {
 		kfree(tpg);
 		return NULL;

drivers/target/iscsi/iscsi_target_configfs.c

@@ -1421,7 +1421,7 @@ static struct se_portal_group *lio_target_tiqn_addtpg(
 		return NULL;
 
 	ret = core_tpg_register(&iscsi_ops, wwn, &tpg->tpg_se_tpg,
-				tpg, TRANSPORT_TPG_TYPE_NORMAL);
+				SCSI_PROTOCOL_ISCSI);
 	if (ret < 0)
 		return NULL;
 

drivers/target/iscsi/iscsi_target_tpg.c

@@ -68,8 +68,7 @@ int iscsit_load_discovery_tpg(void)
 		return -1;
 	}
 
-	ret = core_tpg_register(&iscsi_ops, NULL, &tpg->tpg_se_tpg,
-				tpg, TRANSPORT_TPG_TYPE_DISCOVERY);
+	ret = core_tpg_register(&iscsi_ops, NULL, &tpg->tpg_se_tpg, -1);
 	if (ret < 0) {
 		kfree(tpg);
 		return -1;

drivers/target/loopback/tcm_loop.c

@@ -1204,8 +1204,8 @@ static struct se_portal_group *tcm_loop_make_naa_tpg(
 	/*
 	 * Register the tl_tpg as a emulated SAS TCM Target Endpoint
 	 */
-	ret = core_tpg_register(&loop_ops, wwn, &tl_tpg->tl_se_tpg, tl_tpg,
-			TRANSPORT_TPG_TYPE_NORMAL);
+	ret = core_tpg_register(&loop_ops, wwn, &tl_tpg->tl_se_tpg,
+				tl_hba->tl_proto_id);
 	if (ret < 0)
 		return ERR_PTR(-ENOMEM);
 

drivers/target/sbp/sbp_target.c

@@ -2152,8 +2152,7 @@ static struct se_portal_group *sbp_make_tpg(
 		goto out_free_tpg;
 	}
 
-	ret = core_tpg_register(&sbp_ops, wwn, &tpg->se_tpg, tpg,
-			TRANSPORT_TPG_TYPE_NORMAL);
+	ret = core_tpg_register(&sbp_ops, wwn, &tpg->se_tpg, SCSI_PROTOCOL_SBP);
 	if (ret < 0)
 		goto out_unreg_mgt_agt;
 

drivers/target/target_core_tpg.c

@@ -634,8 +634,7 @@ int core_tpg_register(
 	const struct target_core_fabric_ops *tfo,
 	struct se_wwn *se_wwn,
 	struct se_portal_group *se_tpg,
-	void *tpg_fabric_ptr,
-	int se_tpg_type)
+	int proto_id)
 {
 	struct se_lun *lun;
 	u32 i;
@@ -661,8 +660,7 @@ int core_tpg_register(
 		init_completion(&lun->lun_ref_comp);
 	}
 
-	se_tpg->se_tpg_type = se_tpg_type;
-	se_tpg->se_tpg_fabric_ptr = tpg_fabric_ptr;
+	se_tpg->proto_id = proto_id;
 	se_tpg->se_tpg_tfo = tfo;
 	se_tpg->se_tpg_wwn = se_wwn;
 	atomic_set(&se_tpg->tpg_pr_ref_count, 0);
@@ -673,7 +671,7 @@ int core_tpg_register(
 	spin_lock_init(&se_tpg->session_lock);
 	spin_lock_init(&se_tpg->tpg_lun_lock);
 
-	if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) {
+	if (se_tpg->proto_id >= 0) {
 		if (core_tpg_setup_virtual_lun0(se_tpg) < 0) {
 			array_free(se_tpg->tpg_lun_list,
 				   TRANSPORT_MAX_LUNS_PER_TPG);
@@ -685,11 +683,10 @@ int core_tpg_register(
 	list_add_tail(&se_tpg->se_tpg_node, &tpg_list);
 	spin_unlock_bh(&tpg_lock);
 
-	pr_debug("TARGET_CORE[%s]: Allocated %s struct se_portal_group for"
-		" endpoint: %s, Portal Tag: %u\n", tfo->get_fabric_name(),
-		(se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) ?
-		"Normal" : "Discovery", (tfo->tpg_get_wwn(se_tpg) == NULL) ?
-		"None" : tfo->tpg_get_wwn(se_tpg), tfo->tpg_get_tag(se_tpg));
+	pr_debug("TARGET_CORE[%s]: Allocated portal_group for endpoint: %s, "
+		 "Proto: %d, Portal Tag: %u\n", tfo->get_fabric_name(),
+		tfo->tpg_get_wwn(se_tpg) ? tfo->tpg_get_wwn(se_tpg) : NULL,
+		se_tpg->proto_id, tfo->tpg_get_tag(se_tpg));
 
 	return 0;
 }
@@ -697,14 +694,13 @@ EXPORT_SYMBOL(core_tpg_register);
 
 int core_tpg_deregister(struct se_portal_group *se_tpg)
 {
+	const struct target_core_fabric_ops *tfo = se_tpg->se_tpg_tfo;
 	struct se_node_acl *nacl, *nacl_tmp;
 
-	pr_debug("TARGET_CORE[%s]: Deallocating %s struct se_portal_group"
-		" for endpoint: %s Portal Tag %u\n",
-		(se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) ?
-		"Normal" : "Discovery", se_tpg->se_tpg_tfo->get_fabric_name(),
-		se_tpg->se_tpg_tfo->tpg_get_wwn(se_tpg),
-		se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg));
+	pr_debug("TARGET_CORE[%s]: Deallocating portal_group for endpoint: %s, "
+		 "Proto: %d, Portal Tag: %u\n", tfo->get_fabric_name(),
+		tfo->tpg_get_wwn(se_tpg) ? tfo->tpg_get_wwn(se_tpg) : NULL,
+		se_tpg->proto_id, tfo->tpg_get_tag(se_tpg));
 
 	spin_lock_bh(&tpg_lock);
 	list_del(&se_tpg->se_tpg_node);
@@ -732,10 +728,9 @@ int core_tpg_deregister(struct se_portal_group *se_tpg)
 	}
 	spin_unlock_irq(&se_tpg->acl_node_lock);
 
-	if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL)
+	if (se_tpg->proto_id >= 0)
 		core_tpg_remove_lun(se_tpg, &se_tpg->tpg_virt_lun0);
 
-	se_tpg->se_tpg_fabric_ptr = NULL;
 	array_free(se_tpg->tpg_lun_list, TRANSPORT_MAX_LUNS_PER_TPG);
 	return 0;
 }

drivers/target/tcm_fc/tfc_conf.c

@@ -284,7 +284,7 @@ static struct se_portal_group *ft_add_tpg(
 	}
 
 	ret = core_tpg_register(&ft_fabric_ops, wwn, &tpg->se_tpg,
-				tpg, TRANSPORT_TPG_TYPE_NORMAL);
+				SCSI_PROTOCOL_FCP);
 	if (ret < 0) {
 		destroy_workqueue(wq);
 		kfree(tpg);

drivers/usb/gadget/legacy/tcm_usb_gadget.c

@@ -1508,8 +1508,8 @@ static struct se_portal_group *usbg_make_tpg(
 	tpg->tport = tport;
 	tpg->tport_tpgt = tpgt;
 
-	ret = core_tpg_register(&usbg_ops, wwn, &tpg->se_tpg, tpg,
-				TRANSPORT_TPG_TYPE_NORMAL);
+	ret = core_tpg_register(&usbg_ops, wwn, &tpg->se_tpg,
+				tport->tport_proto_id);
 	if (ret < 0) {
 		destroy_workqueue(tpg->workqueue);
 		kfree(tpg);

drivers/vhost/scsi.c

@@ -2119,8 +2119,8 @@ vhost_scsi_make_tpg(struct se_wwn *wwn,
 	tpg->tport = tport;
 	tpg->tport_tpgt = tpgt;
 
-	ret = core_tpg_register(&vhost_scsi_ops, wwn,
-				&tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
+	ret = core_tpg_register(&vhost_scsi_ops, wwn, &tpg->se_tpg,
+				tport->tport_proto_id);
 	if (ret < 0) {
 		kfree(tpg);
 		return NULL;

drivers/xen/xen-scsiback.c

@@ -1883,8 +1883,8 @@ scsiback_make_tpg(struct se_wwn *wwn,
 	tpg->tport = tport;
 	tpg->tport_tpgt = tpgt;
 
-	ret = core_tpg_register(&scsiback_ops, wwn,
-				&tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
+	ret = core_tpg_register(&scsiback_ops, wwn, &tpg->se_tpg,
+				tport->tport_proto_id);
 	if (ret < 0) {
 		kfree(tpg);
 		return NULL;

include/target/target_core_base.h

@@ -125,12 +125,6 @@ enum transport_lun_status_table {
 	TRANSPORT_LUN_STATUS_ACTIVE = 1,
 };
 
-/* struct se_portal_group->se_tpg_type */
-enum transport_tpg_type_table {
-	TRANSPORT_TPG_TYPE_NORMAL = 0,
-	TRANSPORT_TPG_TYPE_DISCOVERY = 1,
-};
-
 /* Special transport agnostic struct se_cmd->t_states */
 enum transport_state_table {
 	TRANSPORT_NO_STATE	= 0,
@@ -864,8 +858,12 @@ struct se_tpg_np {
 };
 
 struct se_portal_group {
-	/* Type of target portal group, see transport_tpg_type_table */
-	enum transport_tpg_type_table se_tpg_type;
+	/*
+	 * PROTOCOL IDENTIFIER value per SPC4, 7.5.1.
+	 *
+	 * Negative values can be used by fabric drivers for internal use TPGs.
+	 */
+	int			proto_id;
 	/* Number of ACLed Initiator Nodes for this TPG */
 	u32			num_node_acls;
 	/* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
@@ -875,8 +873,6 @@ struct se_portal_group {
 	/* Spinlock for adding/removing sessions */
 	spinlock_t		session_lock;
 	spinlock_t		tpg_lun_lock;
-	/* Pointer to $FABRIC_MOD portal group */
-	void			*se_tpg_fabric_ptr;
 	struct list_head	se_tpg_node;
 	/* linked list for initiator ACL list */
 	struct list_head	acl_node_list;

include/target/target_core_fabric.h

@@ -175,7 +175,7 @@ int	core_tpg_set_initiator_node_queue_depth(struct se_portal_group *,
 int	core_tpg_set_initiator_node_tag(struct se_portal_group *,
 		struct se_node_acl *, const char *);
 int	core_tpg_register(const struct target_core_fabric_ops *,
-		struct se_wwn *, struct se_portal_group *, void *, int);
+		struct se_wwn *, struct se_portal_group *, int);
 int	core_tpg_deregister(struct se_portal_group *);
 
 /* SAS helpers */