[SCSI] lpfc: NPIV: add NPIV support on top of SLI-3

NPIV support is added to the driver.  It utilizes the interfaces of
the fc transport for the creation and deletion of vports. Within the
driver, a new Scsi_Host is created for each NPIV instance, and is
paired with a new instance of a FC port.  This allows N FC Port
elements to share a single Adapter.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 113 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_vport.h b/drivers/scsi/lpfc/lpfc_vport.h
new file mode 100644
index 000000000000..f223550f8cba
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_vport.h
@@ -0,0 +1,113 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for         *
+ * Fibre Channel Host Bus Adapters.                                *
+ * Copyright (C) 2004-2006 Emulex.  All rights reserved.           *
+ * EMULEX and SLI are trademarks of Emulex.                        *
+ * www.emulex.com                                                  *
+ * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
+ *                                                                 *
+ * This program is free software; you can redistribute it and/or   *
+ * modify it under the terms of version 2 of the GNU General       *
+ * Public License as published by the Free Software Foundation.    *
+ * This program is distributed in the hope that it will be useful. *
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
+ * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
+ * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
+ * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
+ * more details, a copy of which can be found in the file COPYING  *
+ * included with this package.                                     *
+ *******************************************************************/
+
+#ifndef _H_LPFC_VPORT
+#define _H_LPFC_VPORT
+
+/* API version values (each will be an individual bit) */
+#define VPORT_API_VERSION_1	0x01
+
+/* Values returned via lpfc_vport_getinfo() */
+struct vport_info {
+
+	uint32_t api_versions;
+	uint8_t linktype;
+#define  VPORT_TYPE_PHYSICAL	0
+#define  VPORT_TYPE_VIRTUAL	1
+
+	uint8_t state;
+#define  VPORT_STATE_OFFLINE	0
+#define  VPORT_STATE_ACTIVE	1
+#define  VPORT_STATE_FAILED	2
+
+	uint8_t fail_reason;
+	uint8_t prev_fail_reason;
+#define  VPORT_FAIL_UNKNOWN	0
+#define  VPORT_FAIL_LINKDOWN	1
+#define  VPORT_FAIL_FAB_UNSUPPORTED	2
+#define  VPORT_FAIL_FAB_NORESOURCES	3
+#define  VPORT_FAIL_FAB_LOGOUT	4
+#define  VPORT_FAIL_ADAP_NORESOURCES	5
+
+	uint8_t node_name[8];	/* WWNN */
+	uint8_t port_name[8];	/* WWPN */
+
+	struct Scsi_Host *shost;
+
+/* Following values are valid only on physical links */
+	uint32_t vports_max;
+	uint32_t vports_inuse;
+	uint32_t rpi_max;
+	uint32_t rpi_inuse;
+#define  VPORT_CNT_INVALID	0xFFFFFFFF
+};
+
+/* data used  in link creation */
+struct vport_data {
+	uint32_t api_version;
+
+	uint32_t options;
+#define  VPORT_OPT_AUTORETRY	0x01
+
+	uint8_t node_name[8];	/* WWNN */
+	uint8_t port_name[8];	/* WWPN */
+
+/*
+ *  Upon successful creation, vport_shost will point to the new Scsi_Host
+ *  structure for the new virtual link.
+ */
+	struct Scsi_Host *vport_shost;
+};
+
+/* API function return codes */
+#define VPORT_OK	0
+#define VPORT_ERROR	-1
+#define VPORT_INVAL	-2
+#define VPORT_NOMEM	-3
+#define VPORT_NORESOURCES	-4
+
+int lpfc_vport_create(struct fc_vport *, bool);
+int lpfc_vport_delete(struct fc_vport *);
+int lpfc_vport_getinfo(struct Scsi_Host *, struct vport_info *);
+int lpfc_vport_tgt_remove(struct Scsi_Host *, uint, uint);
+
+/*
+ *  queuecommand  VPORT-specific return codes. Specified in  the host byte code.
+ *  Returned when the virtual link has failed or is not active.
+ */
+#define  DID_VPORT_ERROR	0x0f
+
+#define VPORT_INFO	0x1
+#define VPORT_CREATE	0x2
+#define VPORT_DELETE	0x4
+
+struct vport_cmd_tag {
+	uint32_t cmd;
+	struct vport_data cdata;
+	struct vport_info cinfo;
+	void *vport;
+	int vport_num;
+};
+
+void lpfc_vport_set_state(struct lpfc_vport *vport,
+			  enum fc_vport_state new_state);
+
+#endif /* H_LPFC_VPORT */