qla4xxx: new driver -- request for review.

new file mode 100644
@@ -0,0 +1,1753 @@
+/*
+ * Copyright (c)  2003-2005 QLogic Corporation
+ * QLogic Linux iSCSI Driver
+ *
+ * This program includes a device driver for Linux 2.6 that may be
+ * distributed with QLogic hardware specific firmware binary file.
+ * You may modify and redistribute the device driver code under the
+ * GNU General Public License as published by the Free Software
+ * Foundation (version 2 or a later version) and/or under the
+ * following terms, as applicable:
+ *
+ * 	1. Redistribution of source code must retain the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer.
+ *
+ * 	2. Redistribution in binary form must reproduce the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer in the documentation and/or other
+ * 	   materials provided with the distribution.
+ *
+ * 	3. The name of QLogic Corporation may not be used to
+ * 	   endorse or promote products derived from this software
+ * 	   without specific prior written permission.
+ *
+ * You may redistribute the hardware specific firmware binary file
+ * under the following terms:
+ *
+ * 	1. Redistribution of source code (only if applicable),
+ * 	   must retain the above copyright notice, this list of
+ * 	   conditions and the following disclaimer.
+ *
+ * 	2. Redistribution in binary form must reproduce the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer in the documentation and/or other
+ * 	   materials provided with the distribution.
+ *
+ * 	3. The name of QLogic Corporation may not be used to
+ * 	   endorse or promote products derived from this software
+ * 	   without specific prior written permission
+ *
+ * REGARDLESS OF WHAT LICENSING MECHANISM IS USED OR APPLICABLE,
+ * THIS PROGRAM IS PROVIDED BY QLOGIC CORPORATION "AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * USER ACKNOWLEDGES AND AGREES THAT USE OF THIS PROGRAM WILL NOT
+ * CREATE OR GIVE GROUNDS FOR A LICENSE BY IMPLICATION, ESTOPPEL, OR
+ * OTHERWISE IN ANY INTELLECTUAL PROPERTY RIGHTS (PATENT, COPYRIGHT,
+ * TRADE SECRET, MASK WORK, OR OTHER PROPRIETARY RIGHT) EMBODIED IN
+ * ANY OTHER QLOGIC HARDWARE OR SOFTWARE EITHER SOLELY OR IN
+ * COMBINATION WITH THIS PROGRAM.
+ */
+
+#include "ql4_def.h"
+
+#include <linux/delay.h>
+
+/*
+*  QLogic ISP4xxx Hardware Support Function Prototypes.
+ */
+extern int ql4xdiscoverywait;
+
+/*
+ * Local routines
+ */
+static int qla4xxx_start_firmware(scsi_qla_host_t * ha);
+static int qla4xxx_config_nvram(scsi_qla_host_t * ha);
+
+static void
+ql4xxx_set_mac_number(scsi_qla_host_t * ha)
+{
+	uint32_t value;
+	uint8_t func_number;
+	unsigned long flags;
+
+	/* Get the function number */
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	value = RD_REG_DWORD(&ha->reg->ctrl_status);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	func_number = (uint8_t) ((value >> 4) & 0x30);
+	switch (value & ISP_CONTROL_FN_MASK) {
+	case ISP_CONTROL_FN0_SCSI:
+		ha->mac_index = 1;
+		break;
+	case ISP_CONTROL_FN1_SCSI:
+		ha->mac_index = 3;
+		break;
+	default:
+		DEBUG2(printk("scsi%ld: %s: Invalid function number, "
+		    "ispControlStatus = 0x%x\n", ha->host_no, __func__, value));
+		break;
+	}
+	DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
+	    ha->mac_index));
+}
+
+/**************************************************************************
+ * qla4xxx_free_ddb
+ *	This routine deallocates and unlinks the specified ddb_entry from the
+ *	adapter's
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *	ddb_entry - Pointer to device database entry
+ *
+ * Returns:
+ *	None
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+void
+qla4xxx_free_ddb(scsi_qla_host_t * ha, struct ddb_entry *ddb_entry)
+{
+	/* Remove device entry from list */
+	list_del_init(&ddb_entry->list);
+
+	/* Remove device pointer from index mapping arrays */
+	ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
+	    (ddb_entry_t *) INVALID_ENTRY;
+	ha->tot_ddbs--;
+
+	/* Free memory for device entry */
+	kfree(ddb_entry);
+}
+
+/**************************************************************************
+ * qla4xxx_free_ddb_list
+ *	This routine deallocates and removes all devices on the sppecified
+ *	adapter.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	None
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+void
+qla4xxx_free_ddb_list(scsi_qla_host_t * ha)
+{
+	struct list_head *ptr;
+	struct ddb_entry *ddb_entry;
+
+	while (!list_empty(&ha->ddb_list)) {
+		/* Remove device entry from head of list */
+		ptr = ha->ddb_list.next;
+		list_del_init(ptr);
+
+		/* Free memory for device entry */
+		ddb_entry = list_entry(ptr, struct ddb_entry, list);
+		qla4xxx_free_ddb(ha, ddb_entry);
+	}
+}
+
+/*
+ * qla4xxx_init_rings
+ *	This routine initializes the internal queues for the specified adapter.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *
+ * Remarks:
+ *	The QLA4010 requires us to restart the queues at index 0.
+ *	The QLA4000 doesn't care, so just default to QLA4010's requirement.
+ * Returns:
+ *	QLA_SUCCESS - Always return success.
+ *
+ * Context:
+ *	Kernel context.
+ */
+int
+qla4xxx_init_rings(scsi_qla_host_t * ha)
+{
+	uint16_t i;
+	unsigned long flags = 0;
+
+	/* Initialize request queue. */
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	ha->request_out = 0;
+	ha->request_in = 0;
+	ha->request_ptr = &ha->request_ring[ha->request_in];
+	ha->req_q_count = REQUEST_QUEUE_DEPTH;
+
+	/* Initialize response queue. */
+	ha->response_in = 0;
+	ha->response_out = 0;
+	ha->response_ptr = &ha->response_ring[ha->response_out];
+
+	/*
+	 * Initialize DMA Shadow registers.  The firmware is really supposed to
+	 * take care of this, but on some uniprocessor systems, the shadow
+	 * registers aren't cleared-- causing the interrupt_handler to think
+	 * there are responses to be processed when there aren't.
+	 */
+	ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
+	ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
+	wmb();
+
+	WRT_REG_DWORD(&ha->reg->req_q_in, 0);
+	WRT_REG_DWORD(&ha->reg->rsp_q_out, 0);
+	PCI_POSTING(&ha->reg->rsp_q_out);
+
+	/* Initialize active array */
+	for (i = 0; i < MAX_SRBS; i++)
+		ha->active_srb_array[i] = 0;
+	ha->active_srb_count = 0;
+
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	return QLA_SUCCESS;
+}
+
+#define qla4xxx_mac_is_equal(mac1, mac2) (memcmp(mac1, mac2, MAC_ADDR_LEN) == 0)
+
+/**************************************************************************
+ * qla4xxx_validate_mac_address
+ *	This routine validates the M.A.C. Address(es) of the adapter
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully validated M.A.C. address
+ *	QLA_ERROR   - Failed to validate M.A.C. address
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+static int
+qla4xxx_validate_mac_address(scsi_qla_host_t *ha)
+{
+	FLASH_SYS_INFO *sys_info = NULL;
+	dma_addr_t sys_info_dma;
+	int status = QLA_ERROR;
+
+	sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
+	    &sys_info_dma, GFP_KERNEL);
+	if (sys_info == NULL) {
+		DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+		    ha->host_no, __func__));
+
+		goto exit_validate_mac_no_free;
+	}
+	memset(sys_info, 0, sizeof(*sys_info));
+
+	/* Get flash sys info */
+	if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
+	    sizeof(*sys_info)) != QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
+		    "failed\n", ha->host_no, __func__));
+
+		goto exit_validate_mac;
+	}
+
+	/* Save M.A.C. address & serial_number */
+	memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
+	    min(sizeof(ha->my_mac), sizeof(sys_info->physAddr[0].address)));
+	memcpy(ha->serial_number, &sys_info->acSerialNumber,
+	    min(sizeof(ha->serial_number), sizeof(sys_info->acSerialNumber)));
+
+	status = QLA_SUCCESS;
+
+exit_validate_mac:
+	dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
+	    sys_info_dma);
+
+exit_validate_mac_no_free:
+	return status;
+}
+
+/*
+ * qla4xxx_init_local_data
+ *	This routine initializes the local data for the specified adapter.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully initialized local data
+ *	QLA_ERROR   - Failed to initialize local data
+ *
+ * Context:
+ *	Kernel context.
+ */
+static int
+qla4xxx_init_local_data(scsi_qla_host_t *ha)
+{
+	int i;
+
+	/* Initialize passthru PDU list */
+	for (i = 0; i < (MAX_PDU_ENTRIES - 1); i++)
+		ha->pdu_queue[i].Next = &ha->pdu_queue[i + 1];
+	ha->free_pdu_top = &ha->pdu_queue[0];
+	ha->free_pdu_bottom = &ha->pdu_queue[MAX_PDU_ENTRIES - 1];
+	ha->free_pdu_bottom->Next = NULL;
+	ha->pdu_active = 0;
+
+	/* Initilize aen queue */
+	ha->aen_q_count = MAX_AEN_ENTRIES;
+
+	/* Initialize local iSNS data */
+	qla4xxx_isns_init_attributes(ha);
+	ha->isns_flags = 0;
+	atomic_set(&ha->isns_restart_timer, 0);
+	ha->isns_connection_id = 0;
+	ha->isns_remote_port_num = 0;
+	ha->isns_scn_port_num = 0;
+	ha->isns_esi_port_num = 0;
+	ha->isns_nsh_port_num = 0;
+	memset(ha->isns_entity_id, 0, sizeof(ha->isns_entity_id));
+	ha->isns_num_discovered_targets = 0;
+
+	return qla4xxx_get_firmware_status(ha);
+}
+
+static int
+qla4xxx_fw_ready(scsi_qla_host_t * ha)
+{
+	uint32_t timeout_count;
+	int ready = 0;
+
+	DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
+	for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
+	     timeout_count--) {
+		if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
+			qla4xxx_get_dhcp_ip_address(ha);
+		/* Get firmware state. */
+		if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
+			DEBUG2(printk("scsi%ld: %s: unable to get firmware "
+			    "state\n", ha->host_no, __func__));
+			break;
+
+		}
+
+		if (ha->firmware_state & FW_STATE_ERROR) {
+			DEBUG2(printk("scsi%ld: %s: an unrecoverable error has "
+			    "occurred\n", ha->host_no, __func__));
+			break;
+
+		}
+		if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
+			/*
+			 * The firmware has not yet been issued an Initialize
+			 * Firmware command, so issue it now.
+			 */
+			if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
+				break;
+
+			/* Go back and test for ready state - no wait. */
+			continue;
+		}
+
+		if (ha->firmware_state == FW_STATE_READY) {
+			DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware Ready..\n"));
+			/* The firmware is ready to process SCSI commands. */
+			DEBUG2(ql4_printk(KERN_INFO, ha,
+			    "scsi%ld: %s: MEDIA TYPE - %s\n", ha->host_no,
+			    __func__, (ha->addl_fw_state &
+			    FW_ADDSTATE_OPTICAL_MEDIA) != 0 ? "OPTICAL" :
+				"COPPER"));
+			DEBUG2(ql4_printk(KERN_INFO, ha,
+			    "scsi%ld: %s: DHCP STATE Enabled " "%s\n",
+			    ha->host_no, __func__, (ha->addl_fw_state &
+			    FW_ADDSTATE_DHCP_ENABLED) != 0 ? "YES" : "NO"));
+			DEBUG2(ql4_printk(KERN_INFO, ha,
+			    "scsi%ld: %s: LINK %s\n", ha->host_no, __func__,
+			    (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) != 0 ?
+			    "UP" : "DOWN"));
+			DEBUG2(ql4_printk(KERN_INFO, ha,
+			    "scsi%ld: %s: iSNS Service " "Started %s\n",
+			    ha->host_no, __func__, (ha->addl_fw_state &
+			    FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ? "YES" : "NO"));
+
+			ready = 1;
+			/* If iSNS is enabled, start the iSNS service now. */
+			if ((ha->tcp_options & TOPT_ISNS_ENABLE) &&
+			    !IPAddrIsZero(ha->isns_ip_address)) {
+				uint32_t ip_addr = 0;
+
+				IPAddr2Uint32(ha->isns_ip_address, &ip_addr);
+				ql4_printk(KERN_INFO, ha,
+				    "Initializing ISNS..\n");
+				qla4xxx_isns_reenable(ha, ip_addr,
+				    ha->isns_server_port_number);
+			}
+			break;
+		}
+		DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
+		    "seconds expired= %d\n", ha->host_no, __func__,
+		    ha->firmware_state, ha->addl_fw_state, timeout_count));
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule_timeout(1 * HZ);
+	}			/* end of for */
+
+	if (timeout_count <= 0)
+		DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
+		    ha->host_no, __func__));
+	if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
+		ready = 1;
+
+	return ready;
+}
+
+/*
+ * qla4xxx_init_firmware
+ *	This routine initializes the firmware.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully initialized firmware
+ *	QLA_ERROR   - Failed to initialize firmware
+ *
+ * Context:
+ *	Kernel context.
+ */
+static int
+qla4xxx_init_firmware(scsi_qla_host_t * ha)
+{
+	int status = QLA_ERROR;
+
+	ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
+	if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
+		DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
+		    "control block\n", ha->host_no, __func__));
+		return status;
+	}
+	if (!qla4xxx_fw_ready(ha))
+		return status;
+
+	set_bit(AF_ONLINE, &ha->flags);
+	return qla4xxx_get_firmware_status(ha);
+}
+
+/**************************************************************************
+ * qla4xxx_find_isns_targets
+ *	This routine locates a device handle for ther given iSNS information.
+ *	If device doesn't exist, returns NULL.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *      ip_addr - Pointer to IP address
+ *      alias - Pointer to iSCSI alias
+ *
+ * Returns:
+ *	Pointer to the corresponding internal device database structure
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+static inline int
+qla4xxx_is_discovered_target(scsi_qla_host_t * ha, uint8_t * ip_addr,
+    uint8_t * alias, uint8_t * name_str)
+{
+	ISNS_DISCOVERED_TARGET *discovered_target = NULL;
+	int i, j;
+
+	for (i = 0; i < ha->isns_num_discovered_targets; i++) {
+		discovered_target = &ha->isns_disc_tgt_databasev[i];
+
+		for (j = 0; j < discovered_target->NumPortals; j++) {
+			if (memcmp(discovered_target->Portal[j].IPAddr, ip_addr,
+			    min(sizeof(discovered_target->Portal[j].IPAddr),
+				    sizeof(*ip_addr)) == 0)
+			    && memcmp(discovered_target->Alias, alias,
+				    min(sizeof(discovered_target->Alias),
+					    sizeof(*alias)) == 0)
+			    && memcmp(discovered_target->NameString, name_str,
+				    min(sizeof(discovered_target->Alias),
+					    sizeof(*name_str)) == 0)) {
+
+				return QLA_SUCCESS;
+			}
+		}
+	}
+	return QLA_ERROR;
+}
+
+static struct ddb_entry *
+qla4xxx_get_ddb_entry(scsi_qla_host_t *ha, uint32_t fw_ddb_index)
+{
+	DEV_DB_ENTRY *fw_ddb_entry = NULL;
+	dma_addr_t fw_ddb_entry_dma;
+	struct ddb_entry *ddb_entry = NULL;
+	int found = 0;
+	uint32_t device_state;
+
+	/* Make sure the dma buffer is valid */
+	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+	    &fw_ddb_entry_dma, GFP_KERNEL);
+	if (fw_ddb_entry == NULL) {
+		DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+		    ha->host_no, __func__));
+		return NULL;
+	}
+
+	if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
+	    fw_ddb_entry_dma, NULL, NULL, &device_state, NULL, NULL, NULL) ==
+	    QLA_ERROR) {
+		DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
+		    "fw_ddb_index %d\n", ha->host_no, __func__, fw_ddb_index));
+		return NULL;
+	}
+
+	/* Allocate DDB if not already allocated. */
+	DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
+	    __func__, fw_ddb_index));
+	list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
+		if (memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsiName,
+		    ISCSI_NAME_SIZE) == 0) {
+			found++;
+			break;
+		}
+	}
+
+	if (!found) {
+		DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
+		    "new ddb\n", ha->host_no, __func__, fw_ddb_index));
+		ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
+	}
+
+	/* if not found allocate new ddb */
+	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
+	    fw_ddb_entry_dma);
+
+	return ddb_entry;
+}
+
+/**************************************************************************
+ * qla4xxx_update_ddb_entry
+ *	This routine updates the driver's internal device database entry
+ *	with information retrieved from the firmware's device database
+ *	entry for the specified device.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *	ddb_entry - Pointer to device database entry
+ *
+ * Output:
+ *	ddb_entry - Structure filled in.
+ *
+ * Remarks:
+ *	The ddb_entry->fw_ddb_index field must be initialized prior to
+ *	calling this routine
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully update ddb_entry
+ *	QLA_ERROR   - Failed to update ddb_entry
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+int
+qla4xxx_update_ddb_entry(scsi_qla_host_t * ha, struct ddb_entry *ddb_entry,
+    uint32_t fw_ddb_index)
+{
+	DEV_DB_ENTRY *fw_ddb_entry = NULL;
+	dma_addr_t fw_ddb_entry_dma;
+	int status = QLA_ERROR;
+
+	if (ddb_entry == NULL) {
+		DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
+		    __func__));
+		goto exit_update_ddb;
+	}
+
+	/* Make sure the dma buffer is valid */
+	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+	    &fw_ddb_entry_dma, GFP_KERNEL);
+	if (fw_ddb_entry == NULL) {
+		DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+		    ha->host_no, __func__));
+
+		goto exit_update_ddb;
+	}
+
+	if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
+	    fw_ddb_entry_dma, NULL, NULL, &ddb_entry->fw_ddb_device_state, NULL,
+	    &ddb_entry->tcp_source_port_num, &ddb_entry->connection_id) ==
+	    QLA_ERROR) {
+		DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
+		    "fw_ddb_index %d\n", ha->host_no, __func__, fw_ddb_index));
+
+		goto exit_update_ddb;
+	}
+
+	status = QLA_SUCCESS;
+	ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->TSID);
+	ddb_entry->task_mgmt_timeout =
+	    le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
+	ddb_entry->CmdSn = 0;
+	ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exeThrottle);
+	ddb_entry->default_relogin_timeout =
+	    le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
+	ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->minTime2Wait);
+
+	/* Update index in case it changed */
+	ddb_entry->fw_ddb_index = fw_ddb_index;
+	ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
+
+	memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsiName[0],
+	    min(sizeof(ddb_entry->iscsi_name),
+		    sizeof(fw_ddb_entry->iscsiName)));
+	memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ipAddr[0],
+	    min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ipAddr)));
+
+	if (qla4xxx_is_discovered_target(ha, fw_ddb_entry->ipAddr,
+	    fw_ddb_entry->iSCSIAlias, fw_ddb_entry->iscsiName) == QLA_SUCCESS)
+		set_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags);
+
+	DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
+	    ha->host_no, __func__, fw_ddb_index,
+	    ddb_entry->fw_ddb_device_state, status);)
+
+exit_update_ddb:
+	if (fw_ddb_entry)
+		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+		    fw_ddb_entry, fw_ddb_entry_dma);
+
+	return status;
+}
+
+/**************************************************************************
+ * qla4xxx_alloc_ddb
+ *	This routine allocates a ddb_entry, ititializes some values, and
+ *	inserts it into the ddb list.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *      fw_ddb_index - Firmware's device database index
+ *
+ * Returns:
+ *	Pointer to internal device database structure
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+struct ddb_entry *
+qla4xxx_alloc_ddb(scsi_qla_host_t * ha, uint32_t fw_ddb_index)
+{
+	struct ddb_entry *ddb_entry;
+
+	DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
+	    __func__, fw_ddb_index));
+
+	ddb_entry = (struct ddb_entry *)kmalloc(sizeof(*ddb_entry), GFP_ATOMIC);
+	if (ddb_entry == NULL) {
+		DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
+		    "to add fw_ddb_index [%d]\n", ha->host_no, __func__,
+		    fw_ddb_index));
+		return ddb_entry;
+	}
+
+	memset(ddb_entry, 0, sizeof(*ddb_entry));
+	ddb_entry->fw_ddb_index = fw_ddb_index;
+	atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
+	atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
+	atomic_set(&ddb_entry->relogin_timer, 0);
+	atomic_set(&ddb_entry->relogin_retry_count, 0);
+	atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
+	list_add_tail(&ddb_entry->list, &ha->ddb_list);
+	ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
+	ha->tot_ddbs++;
+
+	return ddb_entry;
+}
+
+/**************************************************************************
+ * qla4xxx_configure_ddbs
+ *	This routine searches for all valid firmware ddb entries and builds
+ *	an internal ddb list.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *
+ * Remarks:
+ *	Ddbs that are considered valid are those with a device state of
+ *	SESSION_ACTIVE.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully built internal ddb list, if targets available
+ *	QLA_ERROR   - Error on a mailbox command
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+static int
+qla4xxx_build_ddb_list(scsi_qla_host_t *ha)
+{
+	int status = QLA_SUCCESS;
+	uint32_t fw_ddb_index = 0;
+	uint32_t next_fw_ddb_index = 0;
+	uint32_t ddb_state;
+	uint32_t conn_err, err_code;
+	struct ddb_entry *ddb_entry;
+
+	ql4_printk(KERN_INFO, ha, "Initializing DDBs ...\n");
+	for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
+	     fw_ddb_index = next_fw_ddb_index) {
+		/* First, let's see if a device exists here */
+		if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
+		    &next_fw_ddb_index, &ddb_state, &conn_err, NULL, NULL) ==
+		    QLA_ERROR) {
+			DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
+			    "fw_ddb_index %d failed", ha->host_no, __func__,
+			    fw_ddb_index));
+			return QLA_ERROR;
+		}
+
+		DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
+		    "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
+		    fw_ddb_index, ddb_state, next_fw_ddb_index));
+
+		/* Add DDB to internal our ddb list. */
+		ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
+		if (ddb_entry == NULL) {
+			DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
+			    "for device at fw_ddb_index %d\n", ha->host_no,
+			    __func__, fw_ddb_index));
+			return QLA_ERROR;
+		}
+		/* Fill in the device structure */
+		if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
+		    QLA_ERROR) {
+			ha->fw_ddb_index_map[fw_ddb_index] =
+			    (struct ddb_entry *)INVALID_ENTRY;
+
+			//      qla4xxx_free_ddb(ha, ddb_entry);
+			DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
+			    "for fw_ddb_index %d.\n", ha->host_no, __func__,
+			    fw_ddb_index));
+			return QLA_ERROR;
+		}
+
+		/* if fw_ddb with session active state found,
+		 * add to ddb_list */
+		DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
+		    ha->host_no, __func__, fw_ddb_index));
+
+		/* Issue relogin, if necessary. */
+		if (ddb_state == DDB_DS_SESSION_FAILED ||
+		    ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
+
+			atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
+
+			/* Try and login to device */
+			DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
+			    ha->host_no, __func__, fw_ddb_index));
+			err_code = ((conn_err & 0x00ff0000) >> 16);
+			if (err_code == 0x1c || err_code == 0x06) {
+				DEBUG2(printk("%s send target completed or "
+				    "access denied failure\n", __func__));
+			} else {
+				qla4xxx_set_ddb_entry(ha, fw_ddb_index, NULL,
+				    0);
+			}
+		}
+
+		/* We know we've reached the last device when
+		 * next_fw_ddb_index is 0 */
+		if (next_fw_ddb_index == 0)
+			break;
+	}
+
+	ql4_printk(KERN_INFO, ha, "DDB list done..\n");
+
+	return status;
+}
+
+/**************************************************************************
+ * qla4xxx_devices_ready
+ *	This routine waits up to ql4xdiscoverywait seconds
+ *	F/W database during driver load time.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully (re)built internal ddb list
+ *	QLA_ERROR   - Failed to (re)build internal ddb list
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+static int
+qla4xxx_devices_ready(scsi_qla_host_t * ha)
+{
+	int halt_wait;
+	unsigned long discovery_wtime;
+	struct ddb_entry *ddb_entry;
+	uint32_t fw_ddb_index;
+	uint32_t next_fw_ddb_index;
+	uint32_t fw_ddb_device_state;
+	uint32_t conn_err;
+	uint32_t err_code;
+
+	discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
+
+	DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
+	do {
+		/* poll for AEN. */
+		qla4xxx_get_firmware_state(ha);
+		if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
+			/* Set time-between-relogin timer */
+			qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
+		}
+
+		/* if no relogins active or needed, halt discvery wait */
+		halt_wait = 1;
+
+		/* scan for relogins
+		 * ----------------- */
+		for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
+		    fw_ddb_index = next_fw_ddb_index) {
+			if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0,
+			    NULL, &next_fw_ddb_index, &fw_ddb_device_state,
+			    &conn_err, NULL, NULL) == QLA_ERROR)
+				return QLA_ERROR;
+
+			if (fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
+				halt_wait = 0;
+
+			if (fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
+			    fw_ddb_device_state ==
+			    DDB_DS_NO_CONNECTION_ACTIVE) {
+
+				/*
+				 * Don't want to do a relogin if connection
+				 * error is 0x1c.
+				 */
+				err_code = ((conn_err & 0x00ff0000) >> 16);
+				if (err_code == 0x1c || err_code == 0x06) {
+					DEBUG2(printk(
+					    "%s send target completed or "
+					    "access denied failure\n",
+					    __func__);)
+				} else {
+					/* We either have a device that is in
+					 * the process of relogging in or a
+					 * device that is waiting to be
+					 * relogged in */
+					halt_wait = 0;
+
+					ddb_entry =
+					    qla4xxx_lookup_ddb_by_fw_index(ha,
+						fw_ddb_index);
+					if (ddb_entry == NULL)
+						return QLA_ERROR;
+
+					if (ddb_entry->dev_scan_wait_to_start_relogin != 0
+					    && time_after_eq(jiffies,
+						    ddb_entry->dev_scan_wait_to_start_relogin))
+					{
+						ddb_entry->
+						    dev_scan_wait_to_start_relogin
+						    = 0;
+						qla4xxx_set_ddb_entry(ha,
+						    fw_ddb_index, NULL, 0);
+					}
+				}
+			}
+
+			/* We know we've reached the last device when
+			 * next_fw_ddb_index is 0 */
+			if (next_fw_ddb_index == 0)
+				break;
+		}
+
+		if (halt_wait) {
+			DEBUG2(printk("scsi%ld: %s: Delay halted.  Devices "
+			    "Ready.\n", ha->host_no, __func__));
+			return QLA_SUCCESS;
+		}
+
+		/* delay */
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule_timeout(HZ * 2);
+	} while (!time_after_eq(jiffies, discovery_wtime));
+
+	DEBUG3(qla4xxx_get_conn_event_log(ha));
+
+	return (QLA_SUCCESS);
+}
+
+static void
+qla4xxx_flush_AENS(scsi_qla_host_t *ha)
+{
+	unsigned long wtime;
+
+	/* Flush the 0x8014 AEN from the firmware as a result of
+	 * Auto connect. We are basically doing get_firmware_ddb()
+	 * to determine whether we need to log back in or not.
+	 *  Trying to do a set ddb before we have processed 0x8014
+	 *  will result in another set_ddb() for the same ddb. In other
+	 *  words there will be stale entries in the aen_q.
+	 */
+	wtime = jiffies + (2 * HZ);
+	do {
+		if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
+			if (ha->firmware_state & (BIT_2 | BIT_0))
+				return;
+
+		if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
+			qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+
+		/* delay */
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule_timeout(HZ * 1);
+
+	} while (!time_after_eq(jiffies, wtime));
+
+}
+
+static int
+qla4xxx_initialize_ddb_list(scsi_qla_host_t *ha)
+{
+	uint16_t fw_ddb_index;
+	int status = QLA_SUCCESS;
+
+	/* free the ddb list if is not empty */
+	if (!list_empty(&ha->ddb_list))
+		qla4xxx_free_ddb_list(ha);
+
+	for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
+		ha->fw_ddb_index_map[fw_ddb_index] =
+		    (struct ddb_entry *)INVALID_ENTRY;
+
+	ha->tot_ddbs = 0;
+
+	qla4xxx_flush_AENS(ha);
+
+	/*
+	 * First perform device discovery for active
+	 * fw ddb indexes and build
+	 * ddb list.
+	 */
+	if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
+		return (status);
+
+	/* Wait for an AEN */
+	qla4xxx_devices_ready(ha);
+
+	/*
+	 * Targets can come online after the inital discovery, so processing
+	 * the aens here will catch them.
+	 */
+	if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
+		qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
+
+	return status;
+}
+
+/*
+ * qla4xxx_update_ddb_list
+ *	This routine obtains device information from the F/W database after
+ *	firmware or adapter resets.  The device table is preserved.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully updated internal ddb list
+ *	QLA_ERROR   - Failed to update internal ddb list
+ *
+ * Context:
+ *	Kernel context.
+ */
+int
+qla4xxx_reinitialize_ddb_list(scsi_qla_host_t * ha)
+{
+	int status = QLA_SUCCESS;
+	struct ddb_entry *ddb_entry, *detemp;
+
+	/* Update the device information for all devices. */
+	list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
+		qla4xxx_update_ddb_entry(ha, ddb_entry,
+		    ddb_entry->fw_ddb_index);
+		if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
+			atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
+			DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
+			    "ONLINE\n", ha->host_no, __func__,
+			    ddb_entry->fw_ddb_index));
+		} else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
+			qla4xxx_mark_device_missing(ha, ddb_entry);
+	}
+	return status;
+}
+
+/**************************************************************************
+ * qla4xxx_relogin_device
+ *	This routine does a session relogin with the specified device.
+ *	The ddb entry must be assigned prior to making this call.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *	ddb_entry - Pointer to device database entry
+ *
+ * Returns:
+ *    QLA_SUCCESS = Successfully relogged in device
+ *    QLA_ERROR   = Failed to relogin device
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+int
+qla4xxx_relogin_device(scsi_qla_host_t * ha, struct ddb_entry * ddb_entry)
+{
+	uint16_t relogin_timer;
+
+	relogin_timer = max(ddb_entry->default_relogin_timeout,
+	    (uint16_t)RELOGIN_TOV);
+	atomic_set(&ddb_entry->relogin_timer, relogin_timer);
+
+	DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
+	    ddb_entry->fw_ddb_index, relogin_timer));
+
+	qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, NULL, 0);
+
+	return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4010_topcat_soft_reset
+ *	This routine determines if the QLA4040 TopCat chip is present.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	None.
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+static void
+qla4010_get_topcat_presence(scsi_qla_host_t * ha)
+{
+	unsigned long flags;
+	uint16_t topcat;
+
+	QL4XXX_LOCK_NVRAM(ha);
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	topcat = RD_NVRAM_WORD(ha, offsetof(eeprom_data_t, isp4010.topcat));
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	if ((topcat & TOPCAT_MASK) == TOPCAT_PRESENT)
+		set_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
+	else
+		clear_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
+	QL4XXX_UNLOCK_NVRAM(ha);
+}
+
+
+static int
+qla4xxx_config_nvram(scsi_qla_host_t * ha)
+{
+	unsigned long flags;
+	EXTERNAL_HW_CONFIG_REG extHwConfig;
+
+	DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
+	    __func__));
+	QL4XXX_LOCK_FLASH(ha);
+	QL4XXX_LOCK_NVRAM(ha);
+	/* Get EEPRom Parameters from NVRAM and validate */
+	ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
+	if (qla4xxx_is_NVRAM_configuration_valid(ha) == QLA_SUCCESS) {
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		extHwConfig.Asuint32_t = RD_NVRAM_WORD(ha,
+		    EEPROM_EXT_HW_CONF_OFFSET());
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	} else {
+		/*
+		 * QLogic adapters should always have a valid NVRAM.
+		 * If not valid, do not load.
+		 */
+		ql4_printk(KERN_WARNING, ha,
+		    "scsi%ld: %s: EEProm checksum invalid.  Please update "
+		    "your EEPROM\n", ha->host_no, __func__);
+
+		/* set defaults */
+		if (IS_QLA4010(ha))
+			extHwConfig.Asuint32_t = 0x1912;
+		else if (IS_QLA4022(ha))
+			extHwConfig.Asuint32_t = 0x0023;
+	}
+	DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
+	    ha->host_no, __func__, extHwConfig.Asuint32_t));
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	WRT_REG_DWORD(ISP_EXT_HW_CONF(ha),
+	    ((0xFFFF << 16) | extHwConfig.Asuint32_t));
+	PCI_POSTING(ISP_EXT_HW_CONF(ha));
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	QL4XXX_UNLOCK_NVRAM(ha);
+	QL4XXX_UNLOCK_FLASH(ha);
+
+	return 1;
+}
+
+static void
+qla4x00_pci_config(scsi_qla_host_t * ha)
+{
+	uint16_t w, mwi;
+
+	ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
+
+	pci_set_master(ha->pdev);
+	mwi = 0;
+	if (pci_set_mwi(ha->pdev))
+		mwi = PCI_COMMAND_INVALIDATE;
+	/*
+	 * We want to respect framework's setting of PCI configuration space
+	 * command register and also want to make sure that all bits of
+	 * interest to us are properly set in command register.
+	 */
+	pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
+	w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
+	w &= ~PCI_COMMAND_INTX_DISABLE;
+	pci_write_config_word(ha->pdev, PCI_COMMAND, w);
+}
+
+static int
+qla4xxx_start_firmware_from_flash(scsi_qla_host_t * ha)
+{
+	int status = QLA_ERROR;
+	uint32_t max_wait_time;
+	unsigned long flags;
+	uint32_t mbox_status;
+
+	ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
+
+	/*
+	 * Start firmware from flash ROM
+	 *
+	 * WORKAROUND: Stuff a non-constant value that the firmware can
+	 * use as a seed for a random number generator in MB7 prior to
+	 * setting BOOT_ENABLE.  Fixes problem where the TCP
+	 * connections use the same TCP ports after each reboot,
+	 * causing some connections to not get re-established.
+	 */
+	DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
+	    ha->host_no, __func__));
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	WRT_REG_DWORD(&ha->reg->mailbox[7], jiffies);
+	if (IS_QLA4022(ha))
+		WRT_REG_DWORD(&ha->reg->u1.isp4022.nvram,
+		    SET_RMASK(NVR_WRITE_ENABLE));
+
+	WRT_REG_DWORD(&ha->reg->ctrl_status, SET_RMASK(CSR_BOOT_ENABLE));
+	PCI_POSTING(&ha->reg->ctrl_status);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	/* Wait for firmware to come UP. */
+	max_wait_time = FIRMWARE_UP_TOV * 4;
+	do {
+		uint32_t ctrl_status;
+
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		ctrl_status = RD_REG_DWORD(&ha->reg->ctrl_status);
+		mbox_status = RD_REG_DWORD(&ha->reg->mailbox[0]);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		if (ctrl_status & SET_RMASK(CSR_SCSI_PROCESSOR_INTR))
+			break;
+		if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
+			break;
+
+		DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
+		    "complete... ctrl_sts=0x%x, remaining=%d\n", ha->host_no,
+		    __func__, ctrl_status, max_wait_time));
+
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule_timeout(HZ / 4);
+	} while ((max_wait_time--));
+
+	if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
+		DEBUG(printk("scsi%ld: %s: Firmware has started\n",
+		    ha->host_no, __func__));
+
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		WRT_REG_DWORD(&ha->reg->ctrl_status,
+		    SET_RMASK(CSR_SCSI_PROCESSOR_INTR));
+		PCI_POSTING(&ha->reg->ctrl_status);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		status = QLA_SUCCESS;
+	} else {
+		printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
+		    "-  mbox status 0x%x\n", ha->host_no, __func__,
+		    mbox_status);
+		status = QLA_ERROR;
+	}
+	return status;
+}
+
+/**************************************************************************
+ * qla4xxx_start_firmware
+ *	This routine performs the neccessary steps to start the firmware for
+ *	the QLA4010 adapter.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully started QLA4xxx firmware
+ *	QLA_ERROR   - Failed to start QLA4xxx firmware
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+static int
+qla4xxx_start_firmware(scsi_qla_host_t * ha)
+{
+	unsigned long flags = 0;
+	uint32_t mbox_status;
+	int status = QLA_ERROR;
+	int soft_reset = 1;
+	int config_chip = 0;
+
+	if (IS_QLA4010(ha))
+		qla4010_get_topcat_presence(ha);
+
+	if (IS_QLA4022(ha))
+		ql4xxx_set_mac_number(ha);
+
+	QL4XXX_LOCK_DRVR_WAIT(ha);
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+
+	DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
+	    __func__, RD_REG_DWORD(ISP_PORT_CTRL(ha))));
+	DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
+	    __func__, RD_REG_DWORD(ISP_PORT_STATUS(ha))));
+
+	/* Is Hardware already initialized? */
+	if ((RD_REG_DWORD(ISP_PORT_CTRL(ha)) & 0x8000) != 0) {
+		DEBUG(printk("scsi%ld: %s: Hardware has already been "
+		    "initialized\n", ha->host_no, __func__));
+
+		/* Receive firmware boot acknowledgement */
+		mbox_status = RD_REG_DWORD(&ha->reg->mailbox[0]);
+
+		DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
+		    "0x%x\n", ha->host_no, __func__, mbox_status));
+
+		/* Is firmware already booted? */
+		if (mbox_status == 0) {
+			/* F/W not running, must be config by net driver */
+			config_chip = 1;
+			soft_reset = 0;
+		} else {
+			WRT_REG_DWORD(&ha->reg->ctrl_status,
+			    SET_RMASK(CSR_SCSI_PROCESSOR_INTR));
+			PCI_POSTING(&ha->reg->ctrl_status);
+			spin_unlock_irqrestore(&ha->hardware_lock, flags);
+			if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
+				DEBUG2(printk("scsi%ld: %s: Get firmware "
+				    "state -- state = 0x%x\n", ha->host_no,
+				    __func__, ha->firmware_state));
+				/* F/W is running */
+				if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
+					DEBUG2(printk("scsi%ld: %s: Firmware "
+					    "in known state -- config and "
+					    "boot, state = 0x%x\n",
+					    ha->host_no, __func__,
+					    ha->firmware_state));
+					config_chip = 1;
+					soft_reset = 0;
+				}
+			} else {
+				DEBUG2(printk("scsi%ld: %s: Firmware in "
+				    "unknown state -- resetting, state = "
+				    "0x%x\n", ha->host_no, __func__,
+				    ha->firmware_state));
+			}
+			spin_lock_irqsave(&ha->hardware_lock, flags);
+		}
+	} else {
+		DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
+		    "started - resetting\n", ha->host_no, __func__));
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
+	    ha->host_no, __func__, soft_reset, config_chip));
+	if (soft_reset) {
+		DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
+		    __func__));
+		status = qla4xxx_soft_reset(ha);
+		if (status == QLA_ERROR) {
+			DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
+			    ha->host_no, __func__));
+			QL4XXX_UNLOCK_DRVR(ha);
+			return QLA_ERROR;
+		}
+		config_chip = 1;
+		/* Reset clears the semaphore, so aquire again */
+		QL4XXX_LOCK_DRVR_WAIT(ha);
+	}
+
+	if (config_chip) {
+		if (qla4xxx_config_nvram(ha))
+			status = qla4xxx_start_firmware_from_flash(ha);
+
+		QL4XXX_UNLOCK_DRVR(ha);
+		if (status == QLA_SUCCESS) {
+			qla4xxx_get_fw_version(ha);
+			if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
+				qla4xxx_get_crash_record(ha);
+		} else {
+			DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
+			    ha->host_no, __func__));
+		}
+	}
+	return status;
+}
+
+
+/**************************************************************************
+ * qla4xxx_initialize_adapter
+ *	This routine parforms all of the steps necessary to initialize the
+ *	adapter.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *	renew_ddb_list - Indicates what to do with the adapter's ddb list
+ *			after adapter recovery has completed.
+ *			0=preserve ddb list, 1=destroy and rebuild ddb list
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully initialized adapter
+ *	QLA_ERROR   - Failed to initialize adapter
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+int
+qla4xxx_initialize_adapter(scsi_qla_host_t * ha, uint8_t renew_ddb_list)
+{
+	int status = QLA_ERROR;
+
+	qla4x00_pci_config(ha);
+
+	qla4xxx_disable_intrs(ha);
+
+	/* Initialize the Host adapter request/response queues and firmware */
+	if (qla4xxx_start_firmware(ha) == QLA_ERROR)
+		return status;
+
+	if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
+		return status;
+
+	if (qla4xxx_init_local_data(ha) == QLA_ERROR)
+		return status;
+
+	status = qla4xxx_init_firmware(ha);
+	if (status == QLA_ERROR)
+		return status;
+
+	/*
+	 * FW is waiting to get an IP address from DHCP server: Skip building
+	 * the ddb_list and wait for DHCP lease acquired aen to come in
+	 * followed by 0x8014 aen" to trigger the tgt discovery process.
+	 */
+	if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
+		return status;
+
+	/* Skip device discovery if ip and subnet is zero */
+	if (IPAddrIsZero(ha->ip_address) || IPAddrIsZero(ha->subnet_mask))
+		return status;
+
+	/* If iSNS Enabled, wait for iSNS targets */
+	if (test_bit (ISNS_FLAG_ISNS_ENABLED_IN_ISP, &ha->isns_flags)) {
+		unsigned long wait_cnt = jiffies + ql4xdiscoverywait * HZ;
+
+		DEBUG(printk("scsi%ld: Delay up to %d seconds while iSNS "
+		    "targets are being discovered.\n", ha->host_no,
+		    ql4xdiscoverywait));
+		while (!time_after_eq(jiffies, wait_cnt)) {
+			if (test_bit(ISNS_FLAG_DEV_SCAN_DONE, &ha->isns_flags))
+				break;
+			qla4xxx_get_firmware_state(ha);
+			set_current_state(TASK_INTERRUPTIBLE);
+			schedule_timeout(1 * HZ);
+		}
+
+		if (!test_bit(ISNS_FLAG_ISNS_SRV_ENABLED, &ha->isns_flags)) {
+			DEBUG2(printk("scsi%ld: iSNS service failed to start\n",
+			    ha->host_no));
+		} else {
+			if (!ha->isns_num_discovered_targets) {
+				DEBUG2(printk("scsi%ld: Failed to discover "
+				    "iSNS targets\n", ha->host_no));
+			}
+		}
+	}
+
+	if (renew_ddb_list == PRESERVE_DDB_LIST) {
+		/*
+		 * We want to preserve lun states (i.e. suspended, etc.)
+		 * for recovery initiated by the driver.  So just update
+		 * the device states for the existing ddb_list.
+		 */
+		qla4xxx_reinitialize_ddb_list(ha);
+	} else if (renew_ddb_list == REBUILD_DDB_LIST) {
+		/*
+		 * We want to build the ddb_list from scratch during
+		 * driver initialization and recovery initiated by the
+		 * INT_HBA_RESET IOCTL.
+		 */
+		status = qla4xxx_initialize_ddb_list(ha);
+		if (status == QLA_ERROR) {
+			DEBUG2(printk("%s(%ld) Error occurred during build ddb "
+			    "list\n", __func__, ha->host_no));
+			goto exit_init_hba;
+		}
+
+	}
+	if (!ha->tot_ddbs) {
+		DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
+		    "present in Firmware device database\n", ha->host_no));
+	}
+
+exit_init_hba:
+	return status;
+
+}
+
+/**************************************************************************
+ * qla4xxx_add_device_dynamically
+ *	This routine processes adds a device as a result of an 8014h AEN.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *      fw_ddb_index - Firmware's device database index
+ *
+ * Returns:
+ *	None
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+static void
+qla4xxx_add_device_dynamically(scsi_qla_host_t *ha, uint32_t fw_ddb_index)
+{
+	struct ddb_entry * ddb_entry;
+
+	/* First allocate a device structure */
+	ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
+	if (ddb_entry == NULL) {
+		DEBUG2(printk(KERN_WARNING
+		    "scsi%ld: Unable to allocate memory to add fw_ddb_index "
+		    "%d\n", ha->host_no, fw_ddb_index));
+	} else if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
+	    QLA_ERROR) {
+		ha->fw_ddb_index_map[fw_ddb_index] =
+		    (struct ddb_entry *)INVALID_ENTRY;
+		DEBUG2(printk(KERN_WARNING
+		    "scsi%ld: failed to add new device at index [%d]\n"
+		    "Unable to retrieve fw ddb entry\n", ha->host_no,
+		    fw_ddb_index));
+	} else {
+		/* New device. Let's add it to the database */
+		DEBUG2(printk("scsi%ld: %s: new device at index [%d]\n",
+		    ha->host_no, __func__, fw_ddb_index));
+/*FIXME*/
+		/*qla4xxx_config_os(ha);*/
+	}
+}
+
+/**************************************************************************
+ * qla4xxx_process_ddb_changed
+ *	This routine processes a Decive Database Changed AEN Event.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ *      fw_ddb_index - Firmware's device database index
+ *      state - Device state
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully processed ddb_changed aen
+ *	QLA_ERROR   - Failed to process ddb_changed aen
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+int
+qla4xxx_process_ddb_changed(scsi_qla_host_t * ha, uint32_t fw_ddb_index,
+    uint32_t state)
+{
+	struct ddb_entry * ddb_entry;
+	uint32_t old_fw_ddb_device_state;
+
+	/* check for out of range index */
+	if (fw_ddb_index >= MAX_DDB_ENTRIES)
+		return QLA_ERROR;
+
+	/* Get the corresponging ddb entry */
+	ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
+	/* Device does not currently exist in our database. */
+	if (ddb_entry == NULL) {
+		if (state == DDB_DS_SESSION_ACTIVE)
+			qla4xxx_add_device_dynamically(ha, fw_ddb_index);
+		return QLA_SUCCESS;
+	}
+
+	/* Device already exists in our database. */
+	old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
+	DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
+	    "index [%d]\n", ha->host_no, __func__,
+	    ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
+	if (old_fw_ddb_device_state == state &&
+	    state == DDB_DS_SESSION_ACTIVE) {
+		/* Do nothing, state not changed. */
+		return QLA_SUCCESS;
+	}
+
+	ddb_entry->fw_ddb_device_state = state;
+	/* Device is back online. */
+	if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
+		atomic_set(&ddb_entry->port_down_timer,
+		    ha->port_down_retry_count);
+		atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
+		atomic_set(&ddb_entry->relogin_retry_count, 0);
+		atomic_set(&ddb_entry->relogin_timer, 0);
+		clear_bit(DF_RELOGIN, &ddb_entry->flags);
+		clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
+		/*
+		 * Change the lun state to READY in case the lun TIMEOUT before
+		 * the device came back.
+		 */
+	} else {
+		/* Device went away, try to relogin. */
+		/* Mark device missing */
+		if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
+			qla4xxx_mark_device_missing(ha, ddb_entry);
+		/*
+		 * Relogin if device state changed to a not active state.
+		 * However, do not relogin if this aen is a result of an IOCTL
+		 * logout (DF_NO_RELOGIN) or if this is a discovered device.
+		 */
+		if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
+		    !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
+		    !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
+		    !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
+			/*
+			 * This triggers a relogin.  After the relogin_timer
+			 * expires, the relogin gets scheduled.  We must wait a
+			 * minimum amount of time since receiving an 0x8014 AEN
+			 * with failed device_state or a logout response before
+			 * we can issue another relogin.
+			 */
+			/* Firmware padds this timeout: (time2wait +1).
+			 * Driver retry to login should be longer than F/W.
+			 * Otherwise F/W will fail
+			 * set_ddb() mbx cmd with 0x4005 since it still
+			 * counting down its time2wait.
+			 */
+			atomic_set(&ddb_entry->relogin_timer, 0);
+			atomic_set(&ddb_entry->retry_relogin_timer,
+			    ddb_entry->default_time2wait + 4);
+		}
+	}
+
+	return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_login_device
+ *	This routine is called by the login IOCTL to log in the specified
+ *	device.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ * 	fw_ddb_index - Index of the device to login
+ * 	connection_id - Connection ID of the device to login
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully logged in device
+ *	QLA_ERROR   - Failed to login device
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+int
+qla4xxx_login_device(scsi_qla_host_t * ha, uint16_t fw_ddb_index,
+    uint16_t connection_id)
+{
+	struct ddb_entry * ddb_entry;
+	int status = QLA_ERROR;
+
+	ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
+	if (ddb_entry == NULL)
+		goto exit_login_device;
+
+	if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL, NULL,
+	    &ddb_entry->fw_ddb_device_state, NULL, NULL, NULL) == QLA_ERROR)
+		goto exit_login_device;
+
+	if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
+		status = QLA_SUCCESS;
+		goto exit_login_device;
+	}
+
+	if (qla4xxx_conn_close_sess_logout(ha, fw_ddb_index, connection_id,
+	    LOGOUT_OPTION_RELOGIN) != QLA_SUCCESS)
+		goto exit_login_device;
+
+	status = QLA_SUCCESS;
+
+exit_login_device:
+	return status;
+}
+
+/**************************************************************************
+ * qla4xxx_logout_device
+ *	This support routine is called by the logout IOCTL to log out
+ *	the specified device.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ * 	fw_ddb_index - Index of the device to logout
+ * 	connection_id - Connection ID of the device to logout
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully logged out device
+ *	QLA_ERROR   - Failed to logout device
+ *
+ * Context:
+ *	Kernel context.
+ **************************************************************************/
+int
+qla4xxx_logout_device(scsi_qla_host_t * ha, uint16_t fw_ddb_index,
+    uint16_t connection_id)
+{
+	int status = QLA_ERROR;
+	struct ddb_entry * ddb_entry;
+	uint32_t old_fw_ddb_device_state;
+
+	ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
+	if (ddb_entry == NULL)
+		goto exit_logout_device;
+
+	if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL, NULL,
+	    &old_fw_ddb_device_state, NULL, NULL, NULL) != QLA_SUCCESS)
+		goto exit_logout_device;
+
+	set_bit(DF_NO_RELOGIN, &ddb_entry->flags);
+	if (qla4xxx_conn_close_sess_logout(ha, fw_ddb_index, connection_id,
+	    LOGOUT_OPTION_CLOSE_SESSION) != QLA_SUCCESS)
+		goto exit_logout_device;
+
+	status = QLA_SUCCESS;
+
+exit_logout_device:
+	return status;
+}
+
+/*
+ * qla4xxx_delete_device
+ *	This routine is called by the logout IOCTL to delete the specified
+ *      device.	 Send the LOGOUT and DELETE_DDB commands for the specified
+ *      target, even if it's not in our internal database.
+ *
+ * Input:
+ * 	ha - Pointer to host adapter structure.
+ * 	fw_ddb_index - Index of the device to delete
+ * 	connection_id - Connection ID of the device to delete
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully deleted device
+ *	QLA_ERROR   - Failed to delete device
+ */
+int
+qla4xxx_delete_device(scsi_qla_host_t * ha, uint16_t fw_ddb_index,
+    uint16_t connection_id)
+{
+	int status = QLA_ERROR;
+	uint32_t fw_ddb_device_state = 0xFFFF;
+	u_long wait_count;
+	struct ddb_entry * ddb_entry;
+
+	/* If the device is in our internal tables, set the NO_RELOGIN bit. */
+	ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
+	if (ddb_entry != NULL)
+		set_bit(DF_NO_RELOGIN, &ddb_entry->flags);
+
+	/*
+	 * If the device state is already one that we can delete, bypass the
+	 * logout command.
+	 */
+	qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL, NULL,
+	    &fw_ddb_device_state, NULL, NULL, NULL);
+	if (fw_ddb_device_state == DDB_DS_UNASSIGNED ||
+	    fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE ||
+	    fw_ddb_device_state == DDB_DS_SESSION_FAILED)
+		goto delete_ddb;
+
+	/* First logout index */
+	if (qla4xxx_conn_close_sess_logout(ha, fw_ddb_index, connection_id,
+	    LOGOUT_OPTION_CLOSE_SESSION) != QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: LOGOUT_OPTION_CLOSE_SESSION "
+			"failed index [%d]\n", ha->host_no, __func__,
+			fw_ddb_index));
+		goto exit_delete_ddb;
+	}
+
+	/* Wait enough time to complete logout */
+	wait_count = jiffies + LOGOUT_TOV * HZ;
+	while (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL, NULL,
+	    &fw_ddb_device_state, NULL, NULL, NULL) == QLA_SUCCESS) {
+		if (time_after_eq(jiffies, wait_count))
+			goto exit_delete_ddb;
+		if (fw_ddb_device_state == DDB_DS_UNASSIGNED ||
+		    fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE ||
+		    fw_ddb_device_state == DDB_DS_SESSION_FAILED)
+			break;
+		udelay(50);
+	}
+
+delete_ddb:
+	/* Now delete index */
+	if (qla4xxx_clear_database_entry(ha, fw_ddb_index) == QLA_SUCCESS) {
+		status = QLA_SUCCESS;
+
+		if (!ddb_entry)
+			goto exit_delete_ddb;
+
+		atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
+		DEBUG(printk("scsi%ld: %s: removing index %d.\n", ha->host_no,
+		    __func__, fw_ddb_index));
+		ha->fw_ddb_index_map[fw_ddb_index] =
+		    (struct ddb_entry *)INVALID_ENTRY;
+	}
+
+exit_delete_ddb:
+	return status;
+
+}

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new file mode 100644
@@ -0,0 +1,2223 @@
+/*
+ * Copyright (c)  2003-2005 QLogic Corporation
+ * QLogic Linux iSCSI Driver
+ *
+ * This program includes a device driver for Linux 2.6 that may be
+ * distributed with QLogic hardware specific firmware binary file.
+ * You may modify and redistribute the device driver code under the
+ * GNU General Public License as published by the Free Software
+ * Foundation (version 2 or a later version) and/or under the
+ * following terms, as applicable:
+ *
+ * 	1. Redistribution of source code must retain the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer.
+ *
+ * 	2. Redistribution in binary form must reproduce the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer in the documentation and/or other
+ * 	   materials provided with the distribution.
+ *
+ * 	3. The name of QLogic Corporation may not be used to
+ * 	   endorse or promote products derived from this software
+ * 	   without specific prior written permission.
+ *
+ * You may redistribute the hardware specific firmware binary file
+ * under the following terms:
+ *
+ * 	1. Redistribution of source code (only if applicable),
+ * 	   must retain the above copyright notice, this list of
+ * 	   conditions and the following disclaimer.
+ *
+ * 	2. Redistribution in binary form must reproduce the above
+ * 	   copyright notice, this list of conditions and the
+ * 	   following disclaimer in the documentation and/or other
+ * 	   materials provided with the distribution.
+ *
+ * 	3. The name of QLogic Corporation may not be used to
+ * 	   endorse or promote products derived from this software
+ * 	   without specific prior written permission
+ *
+ * REGARDLESS OF WHAT LICENSING MECHANISM IS USED OR APPLICABLE,
+ * THIS PROGRAM IS PROVIDED BY QLOGIC CORPORATION "AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * USER ACKNOWLEDGES AND AGREES THAT USE OF THIS PROGRAM WILL NOT
+ * CREATE OR GIVE GROUNDS FOR A LICENSE BY IMPLICATION, ESTOPPEL, OR
+ * OTHERWISE IN ANY INTELLECTUAL PROPERTY RIGHTS (PATENT, COPYRIGHT,
+ * TRADE SECRET, MASK WORK, OR OTHER PROPRIETARY RIGHT) EMBODIED IN
+ * ANY OTHER QLOGIC HARDWARE OR SOFTWARE EITHER SOLELY OR IN
+ * COMBINATION WITH THIS PROGRAM.
+ */
+
+#include "ql4_def.h"
+
+void qla4xxx_isns_enable_callback(scsi_qla_host_t *, uint32_t, uint32_t,
+				  uint32_t, uint32_t);
+
+int qla4xxx_isns_restart_service(scsi_qla_host_t *);
+uint32_t qla4xxx_isns_build_iocb_handle(scsi_qla_host_t *, uint32_t,
+					PDU_ENTRY *);
+int qla4xxx_isns_get_server_request(scsi_qla_host_t *, uint32_t, uint16_t);
+int qla4xxx_isns_reassemble_pdu(scsi_qla_host_t *, uint8_t *, uint32_t *);
+int qla4xxx_isns_parse_and_dispatch_server_request(scsi_qla_host_t *,
+						       uint8_t *, uint32_t,
+						       uint16_t);
+int qla4xxx_isns_parse_and_dispatch_server_response(scsi_qla_host_t *,
+							uint8_t *, uint32_t);
+int qla4xxx_isns_build_scn_registration_packet(scsi_qla_host_t * ha,
+						   uint8_t * buffer,
+						   uint32_t buffer_size,
+						   uint32_t * packet_size);
+int qla4xxx_isns_build_scn_deregistration_packet(scsi_qla_host_t * ha,
+						     uint8_t * buffer,
+						     uint32_t buffer_size,
+						     uint32_t * packet_size);
+int qla4xxx_isns_build_registration_packet(scsi_qla_host_t * ha,
+					       uint8_t * buff,
+					       uint32_t buff_size,
+					       uint8_t * isns_entity_id,
+					       uint8_t * ip_addr,
+					       uint32_t port_number,
+					       uint32_t scn_port,
+					       uint32_t esi_port,
+					       uint8_t * local_alias,
+					       uint32_t * packet_size);
+int qla4xxx_isns_build_deregistration_packet(scsi_qla_host_t * ha,
+						 uint8_t * buff,
+						 uint32_t buff_size,
+						 uint8_t * isns_entity_id,
+						 uint8_t * ip_addr,
+						 uint32_t port_number,
+						 uint32_t * packet_size);
+int qla4xxx_isns_build_request_packet(scsi_qla_host_t * ha,
+					  uint8_t * buff, uint32_t buff_size,
+					  uint16_t function_id,
+					  uint16_t tx_id,
+					  uint8_t use_replace_flag,
+					  ATTRIBUTE_LIST * attr_list,
+					  uint32_t * packet_size);
+int qla4xxx_isns_append_attribute(scsi_qla_host_t * ha, uint8_t ** buffer,
+				      uint8_t * buffer_end,
+				      ATTRIBUTE_LIST * attr_list);
+int qla4xxx_isns_dev_attr_reg(scsi_qla_host_t *);
+int qla4xxx_isns_dev_attr_reg_rsp(scsi_qla_host_t * ha, uint8_t * buffer,
+				      uint32_t buffer_size);
+int qla4xxx_isns_dev_attr_qry_rsp(scsi_qla_host_t * ha, uint8_t * buffer,
+				      uint32_t buffer_size);
+int qla4xxx_isns_dev_get_next_rsp(scsi_qla_host_t * ha, uint8_t * buffer,
+				      uint32_t buffer_size);
+int qla4xxx_isns_dev_dereg_rsp(scsi_qla_host_t * ha, uint8_t * buffer,
+				   uint32_t buffer_size);
+int qla4xxx_isns_scn_reg_rsp(scsi_qla_host_t * ha, uint8_t * buffer,
+				 uint32_t buffer_size);
+int qla4xxx_isns_scn_dereg_rsp(scsi_qla_host_t * ha, uint8_t * buffer,
+				   uint32_t buffer_size);
+int qla4xxx_isns_scn_dereg(scsi_qla_host_t *);
+int qla4xxx_isns_scn_reg(scsi_qla_host_t * ha);
+int qla4xxx_isns_dev_get_next(scsi_qla_host_t * ha,
+				  uint8_t * last_iscsi_name);
+
+const char *isns_error_code_msg[] = ISNS_ERROR_CODE_TBL();
+
+static void
+qla4xxx_strtolower(uint8_t *str)
+{
+	uint8_t *tmp;
+
+	for (tmp = str; *tmp != '\0'; tmp++)
+		if (*tmp >= 'A' && *tmp <= 'Z')
+			*tmp += 'a' - 'A';
+}
+
+void
+qla4xxx_isns_build_entity_id(scsi_qla_host_t *ha)
+{
+	sprintf(ha->isns_entity_id, "%s.%d", ha->serial_number,
+	    ha->function_number);
+	qla4xxx_strtolower(ha->isns_entity_id);
+}
+
+int
+qla4xxx_isns_reenable(scsi_qla_host_t *ha, uint32_t isns_ip_addr,
+    uint16_t isns_server_port_num)
+{
+	set_bit(ISNS_FLAG_REREGISTER, &ha->isns_flags);
+	ISNS_CLEAR_FLAGS(ha);
+	if (qla4xxx_isns_enable(ha, isns_ip_addr, isns_server_port_num) !=
+	    QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s: Failed!\n", ha->host_no,
+		    __func__));
+		return QLA_ERROR;
+	}
+	return QLA_SUCCESS;
+}
+
+/* interrupt context, hardware lock set */
+void
+qla4xxx_isns_enable_callback(scsi_qla_host_t *ha, uint32_t svr, uint32_t scn,
+    uint32_t esi, uint32_t nsh)
+{
+	ha->isns_connection_id = (uint16_t) svr & 0x0000FFFF;
+	ha->isns_scn_conn_id = (uint16_t) scn & 0x0000FFFF;
+	ha->isns_esi_conn_id = (uint16_t) esi & 0x0000FFFF;
+	ha->isns_nsh_conn_id = (uint16_t) nsh & 0x0000FFFF;
+	ha->isns_remote_port_num = (uint16_t) (svr >> 16);
+	ha->isns_scn_port_num = (uint16_t) (scn >> 16);
+	ha->isns_esi_port_num = (uint16_t) (esi >> 16);
+	ha->isns_nsh_port_num = (uint16_t) (nsh >> 16);
+	DEBUG5(printk("scsi%ld: %s: iSNS Server TCP Connect "
+	    "succeeded %d\n", ha->host_no, __func__, svr));
+	DEBUG5(printk("scsi%ld: %s: Remote iSNS Server %d ConnID %x\n",
+	    ha->host_no, __func__, ha->isns_remote_port_num,
+	    ha->isns_connection_id));
+	DEBUG5(printk("scsi%ld: %s: Local  SCN  Listen %d ConnID %x\n",
+	    ha->host_no, __func__, ha->isns_scn_port_num,
+	    ha->isns_scn_conn_id));
+	DEBUG5(printk("scsi%ld: %s: Local  ESI  Listen %d ConnID %x\n",
+	    ha->host_no, __func__, ha->isns_esi_port_num,
+	    ha->isns_esi_conn_id));
+	DEBUG5(printk("scsi%ld: %s: Local  HSN  Listen %d ConnID %x\n",
+	    ha->host_no, __func__, ha->isns_nsh_port_num,
+	    ha->isns_nsh_conn_id));
+	if (ha->isns_connection_id == (uint16_t) - 1) {
+		DEBUG2(printk("scsi%ld: %s: iSNS server refused connection\n",
+		    ha->host_no, __func__));
+		qla4xxx_isns_restart_service(ha);
+		return;
+	}
+	set_bit(ISNS_FLAG_ISNS_SRV_ENABLED, &ha->isns_flags);
+	if (test_bit(ISNS_FLAG_REREGISTER, &ha->isns_flags)) {
+		if (qla4xxx_isns_scn_dereg(ha) != QLA_SUCCESS) {
+			DEBUG2(printk("scsi%ld: %s: qla4xxx_isns_scn_dereg "
+			    "failed!\n", ha->host_no, __func__));
+			return;
+		}
+	} else {
+		if (qla4xxx_isns_dev_attr_reg(ha) != QLA_SUCCESS) {
+			DEBUG2(printk("scsi%ld: %s: qla4xxx_isns_dev_attr_reg "
+			    "failed!\n", ha->host_no, __func__));
+			return;
+		}
+	}
+}
+
+int
+qla4xxx_isns_restart_service(scsi_qla_host_t *ha)
+{
+	qla4xxx_isns_disable(ha);
+	set_bit(ISNS_FLAG_RESTART_SERVICE, &ha->isns_flags);
+	ISNS_CLEAR_FLAGS(ha);
+
+	/* Set timer for restart to complete */
+	atomic_set(&ha->isns_restart_timer, ISNS_RESTART_TOV);
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_restart_service_completion(scsi_qla_host_t *ha,
+    uint32_t isns_ip_addr, uint16_t isns_server_port_num)
+{
+	DEBUG5(printk("scsi%ld: %s: isns_ip_addr %08x\n", ha->host_no,
+	    __func__, isns_ip_addr));
+	if (qla4xxx_isns_enable(ha, isns_ip_addr, isns_server_port_num) !=
+	    QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s: failed!\n", ha->host_no,
+		    __func__));
+		return QLA_ERROR;
+	} else {
+		set_bit(ISNS_FLAG_REREGISTER, &ha->isns_flags);
+		ISNS_CLEAR_FLAGS(ha);
+		return QLA_SUCCESS;
+	}
+}
+
+static void
+qla4xxx_isns_init_isns_reg_attr_list(scsi_qla_host_t *ha)
+{
+	ATTRIBUTE_LIST isns_reg_attr_list[] = {
+
+		/* Source attribute */
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING,
+			(unsigned long)ha->name_string },
+		{ ISNS_ATTR_TAG_ENTITY_IDENTIFIER, ISNS_ATTR_TYPE_STRING, -1 },
+
+		/* Entity ID. */
+		{ ISNS_ATTR_TAG_DELIMITER, ISNS_ATTR_TYPE_EMPTY, 0 },
+
+		/* Operating attributes to register */
+		{ ISNS_ATTR_TAG_ENTITY_IDENTIFIER, ISNS_ATTR_TYPE_STRING, -1},
+		{ ISNS_ATTR_TAG_ENTITY_PROTOCOL, ISNS_ATTR_TYPE_ULONG,
+			cpu_to_be32(ENTITY_PROTOCOL_ISCSI)},
+		{ ISNS_ATTR_TAG_PORTAL_IP_ADDRESS, ISNS_ATTR_TYPE_ADDRESS, -1 },
+		{ ISNS_ATTR_TAG_PORTAL_PORT, ISNS_ATTR_TYPE_ULONG, -1},
+		{ ISNS_ATTR_TAG_SCN_PORT, ISNS_ATTR_TYPE_ULONG, -1},
+		{ ISNS_ATTR_TAG_ESI_PORT, ISNS_ATTR_TYPE_ULONG, -1},
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING,
+			(unsigned long)ha->name_string},
+		{ ISNS_ATTR_TAG_ISCSI_NODE_TYPE, ISNS_ATTR_TYPE_ULONG,
+			cpu_to_be32(ISCSI_NODE_TYPE_INITIATOR) },
+		{ ISNS_ATTR_TAG_ISCSI_ALIAS, ISNS_ATTR_TYPE_STRING, -1},
+
+		/* Friendly machine name? */
+		{ 0, 0, 0 },
+	};
+
+	memcpy(ha->isns_reg_attr_list, isns_reg_attr_list,
+	    sizeof(isns_reg_attr_list));
+}
+
+static void
+qla4xxx_isns_init_isns_dereg_attr_list(scsi_qla_host_t *ha)
+{
+	ATTRIBUTE_LIST isns_dereg_attr_list[] = {
+
+		/* Source attribute */
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING,
+			(unsigned long)ha->name_string},
+
+		/* No key attribute for DevDereg */
+		{ ISNS_ATTR_TAG_DELIMITER, ISNS_ATTR_TYPE_EMPTY, 0 },
+
+		/* Operating attributes */
+		{ ISNS_ATTR_TAG_ENTITY_IDENTIFIER, ISNS_ATTR_TYPE_STRING, -1 },
+
+		/* FQDN */
+#if 0
+		{ ISNS_ATTR_TAG_PORTAL_IP_ADDRESS, ISNS_ATTR_TYPE_ADDRESS, -1 },
+		{ ISNS_ATTR_TAG_PORTAL_PORT, ISNS_ATTR_TYPE_ULONG, -1 },
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING,
+			(unsigned long)ha->name_string },
+#endif
+		{ 0, 0, 0 },
+	};
+
+	memcpy(ha->isns_dereg_attr_list, isns_dereg_attr_list,
+	    sizeof(isns_dereg_attr_list));
+}
+
+static void
+qla4xxx_isns_init_isns_scn_reg_attr_list(scsi_qla_host_t * ha)
+{
+	ATTRIBUTE_LIST isns_scn_reg_attr_list[] = {
+
+		/* Source attribute */
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING,
+			(unsigned long)ha->name_string },
+
+		/* Key attributes */
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING,
+			(unsigned long)ha->name_string },
+
+		/*
+		 * Required delimiter to indicate division between key and
+		 * operating attrs.
+		 */
+		{ ISNS_ATTR_TAG_DELIMITER, ISNS_ATTR_TYPE_EMPTY, 0 },
+
+		/* Operating attributes */
+		{ ISNS_ATTR_TAG_ISCSI_SCN_BITMAP, ISNS_ATTR_TYPE_ULONG,
+			cpu_to_be32(ISCSI_SCN_OBJECT_UPDATED |
+					ISCSI_SCN_OBJECT_ADDED |
+					ISCSI_SCN_OBJECT_REMOVED |
+					ISCSI_SCN_TARGET_AND_SELF_INFO_ONLY) },
+		{ 0, 0, 0 },
+	};
+
+	memcpy(ha->isns_scn_reg_attr_list, isns_scn_reg_attr_list,
+	    sizeof(isns_scn_reg_attr_list));
+}
+
+static void
+qla4xxx_isns_init_isns_scn_dereg_attr_list(scsi_qla_host_t *ha)
+{
+	ATTRIBUTE_LIST isns_scn_dereg_attr_list[] = {
+
+		/* Source attribute */
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING,
+			(unsigned long)ha->name_string },
+
+		/* Key attributes */
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING,
+			(unsigned long)ha->name_string },
+
+		{ 0, 0, 0 },
+	};
+
+	memcpy(ha->isns_scn_dereg_attr_list, isns_scn_dereg_attr_list,
+	    sizeof(isns_scn_dereg_attr_list));
+}
+
+static void
+qla4xxx_isns_init_isns_dev_get_next_attr_list(scsi_qla_host_t *ha)
+{
+	ATTRIBUTE_LIST isns_dev_get_next_attr_list[] = {
+
+		/* Source attribute */
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING,
+			(unsigned long)ha->name_string },
+
+		/* Key attributes */
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING, -1 },
+
+		/*
+		 * Required delimiter to indicate division between key and
+		 * operating attrs.
+		 */
+		{ ISNS_ATTR_TAG_DELIMITER, ISNS_ATTR_TYPE_EMPTY, 0 },
+
+		/* Operating attributes (attributes of object matching key
+		 * attribute to return).
+		 */
+		{ ISNS_ATTR_TAG_ISCSI_NODE_TYPE, ISNS_ATTR_TYPE_ULONG,
+			cpu_to_be32(ISCSI_NODE_TYPE_TARGET)},
+
+		{ 0, 0, 0 },
+	};
+
+	memcpy(ha->isns_dev_get_next_attr_list, isns_dev_get_next_attr_list,
+	    sizeof(isns_dev_get_next_attr_list));
+}
+
+static void
+qla4xxx_isns_init_isns_dev_attr_qry_attr_list(scsi_qla_host_t * ha)
+{
+	ATTRIBUTE_LIST isns_dev_attr_qry_attr_list[] = {
+
+		/* Source attribute */
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING,
+			(unsigned long)ha->name_string },
+
+		/* Key attributes */
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_STRING, -1 },
+
+		/*
+		 * Required delimiter to indicate division between key and
+		 * operating attrs.
+		 */
+		{ ISNS_ATTR_TAG_DELIMITER, ISNS_ATTR_TYPE_EMPTY, 0 },
+
+		/* Operating attributes (attributes of objects matching key
+		 * attributes to return)
+		 */
+		{ ISNS_ATTR_TAG_ENTITY_PROTOCOL, ISNS_ATTR_TYPE_EMPTY, 0 },
+		{ ISNS_ATTR_TAG_ISCSI_NAME, ISNS_ATTR_TYPE_EMPTY, 0 },
+		{ ISNS_ATTR_TAG_ISCSI_NODE_TYPE, ISNS_ATTR_TYPE_EMPTY, 0 },
+		{ ISNS_ATTR_TAG_ISCSI_ALIAS, ISNS_ATTR_TYPE_EMPTY, 0 },
+
+		/* Friendly name */
+		{ ISNS_ATTR_TAG_PORTAL_SYMBOLIC_NAME, ISNS_ATTR_TYPE_EMPTY, 0 },
+		{ ISNS_ATTR_TAG_PORTAL_IP_ADDRESS, ISNS_ATTR_TYPE_EMPTY, 0 },
+		{ ISNS_ATTR_TAG_PORTAL_PORT, ISNS_ATTR_TYPE_EMPTY, 0 },
+		{ ISNS_ATTR_TAG_PORTAL_SECURITY_BITMAP, ISNS_ATTR_TYPE_EMPTY,
+			0},
+		{ ISNS_ATTR_TAG_DD_ID, ISNS_ATTR_TYPE_EMPTY, 0 },
+
+		{ 0, 0, 0 },
+	};
+
+	memcpy(ha->isns_dev_attr_qry_attr_list, isns_dev_attr_qry_attr_list,
+	    sizeof(isns_dev_attr_qry_attr_list));
+}
+
+int
+qla4xxx_isns_init_attributes(scsi_qla_host_t * ha)
+{
+
+	/* Separate these calls to minimize stack usage */
+	qla4xxx_isns_init_isns_reg_attr_list(ha);
+	qla4xxx_isns_init_isns_dereg_attr_list(ha);
+	qla4xxx_isns_init_isns_scn_reg_attr_list(ha);
+	qla4xxx_isns_init_isns_scn_dereg_attr_list(ha);
+	qla4xxx_isns_init_isns_dev_get_next_attr_list(ha);
+	qla4xxx_isns_init_isns_dev_attr_qry_attr_list(ha);
+
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_append_attribute(scsi_qla_host_t *ha, uint8_t **buffer,
+    uint8_t *buffer_end, ATTRIBUTE_LIST *attribute)
+{
+	ISNS_ATTRIBUTE *isns_attr;
+	uint32_t data_len;
+	uint8_t *local;
+
+	isns_attr = (ISNS_ATTRIBUTE *) * buffer;
+	switch (attribute->type) {
+	case ISNS_ATTR_TYPE_EMPTY:
+		data_len = 0;
+		if ((&isns_attr->value[0] + data_len) > buffer_end)
+			return QLA_ERROR;
+
+		isns_attr->tag = cpu_to_be32(attribute->isns_tag);
+		isns_attr->length = cpu_to_be32(data_len);
+		break;
+
+	case ISNS_ATTR_TYPE_STRING:
+		/*
+		 * Length must include NULL terminator.
+		 * Note also that all iSNS strings must be UTF-8 encoded.
+		 * You should encode your strings for UTF-8 before registering
+		 * them with the iSNS server.
+		 */
+		data_len = strlen((uint8_t *) attribute->data) +
+		    sizeof(uint8_t);
+		if (data_len % 4)		/* Pad to 4 byte boundary. */
+			data_len += (4 - (data_len % 4));
+
+		if ((&isns_attr->value[0] + data_len) > buffer_end)
+			return QLA_ERROR;
+
+		isns_attr->tag = cpu_to_be32(attribute->isns_tag);
+		isns_attr->length = cpu_to_be32(data_len);
+		memset(isns_attr->value, 0, data_len);
+		strcpy(&isns_attr->value[0], (uint8_t *) attribute->data);
+		break;
+
+	case ISNS_ATTR_TYPE_ULONG:
+		data_len = sizeof(uint32_t);
+		if ((isns_attr->value + data_len) > buffer_end)
+			return QLA_ERROR;
+
+		isns_attr->tag = cpu_to_be32(attribute->isns_tag);
+		isns_attr->length = cpu_to_be32(data_len);
+		*(uint32_t *) isns_attr->value = (uint32_t) attribute->data;
+		break;
+
+	case ISNS_ATTR_TYPE_ADDRESS:
+		local = (uint8_t *) attribute->data;
+		data_len = 16;	/* Size of an IPv6 address */
+		if ((isns_attr->value + data_len) > buffer_end)
+			return QLA_ERROR;
+
+		isns_attr->tag = cpu_to_be32(attribute->isns_tag);
+		isns_attr->length = cpu_to_be32(data_len);
+
+		/*
+		 * Prepend IP Address with 0xFFFF to indicate this is an IPv4
+		 * only address. IPv6 addresses not supported by driver.
+		 */
+		memset(isns_attr->value, 0, 16);
+		isns_attr->value[10] = 0xFF;
+		isns_attr->value[11] = 0xFF;
+		isns_attr->value[12] = local[0];
+		isns_attr->value[13] = local[1];
+		isns_attr->value[14] = local[2];
+		isns_attr->value[15] = local[3];
+		break;
+
+	default:
+		return QLA_ERROR;
+	}
+
+	*buffer = &isns_attr->value[0] + data_len;
+	return QLA_SUCCESS;
+}
+
+uint32_t
+qla4xxx_isns_build_iocb_handle(scsi_qla_host_t *ha, uint32_t type,
+    PDU_ENTRY *pdu_entry)
+{
+	uint32_t handle;
+
+	handle = (IOCB_ISNS_PT_PDU_TYPE(type) | (((uint8_t *) pdu_entry -
+	    (uint8_t *) ha->pdu_queue) / sizeof(PDU_ENTRY)));
+	DEBUG5(printk("scsi%ld: %s: type %x PDU %p = handle %x\n",
+	    ha->host_no, __func__, type, pdu_entry, handle));
+
+	return handle;
+}
+
+/*
+ * Remarks:
+ *      hardware_lock locked upon entry
+ */
+int
+qla4xxx_isns_get_server_request(scsi_qla_host_t *ha, uint32_t pdu_buff_len,
+    uint16_t connection_id)
+{
+	PDU_ENTRY *pdu_entry;
+	pdu_entry = qla4xxx_get_pdu(ha, max(pdu_buff_len, (uint32_t)PAGE_SIZE));
+	if (pdu_entry == NULL) {
+		DEBUG5(printk("scsi%ld: %s: get_pdu failed\n",
+		    ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+	pdu_entry->SendBuffLen = 0;
+	pdu_entry->RecvBuffLen = pdu_entry->BuffLen;
+	if (qla4xxx_send_passthru0_iocb(ha, ISNS_DEVICE_INDEX, connection_id,
+	    pdu_entry->DmaBuff, pdu_entry->SendBuffLen, pdu_entry->RecvBuffLen,
+	    PT_FLAG_ISNS_PDU | PT_FLAG_WAIT_4_RESPONSE,
+	    qla4xxx_isns_build_iocb_handle(ha,
+		    /*ISNS_REQ_RSP_PDU */ ISNS_ASYNCH_REQ_PDU, pdu_entry)) !=
+	    QLA_SUCCESS) {
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_build_scn_registration_packet(scsi_qla_host_t *ha,
+    uint8_t *buffer, uint32_t buffer_size, uint32_t *packet_size)
+{
+	/*
+	 * Fill in all of the run time requested data in the attribute array
+	 * then call iSNSBuildRequestPacket to do the actual work.
+	 */
+	return qla4xxx_isns_build_request_packet(ha, buffer, buffer_size,
+	    ISNS_FCID_SCNReg, ha->isns_transaction_id, 0,
+	    ha->isns_scn_reg_attr_list, packet_size);
+}
+
+int
+qla4xxx_isns_build_scn_deregistration_packet(scsi_qla_host_t *ha,
+    uint8_t *buffer, uint32_t buffer_size, uint32_t *packet_size)
+{
+	/*
+	 * Fill in all of the run time requested data in the attribute array
+	 * then call iSNSBuildRequestPacket to do the actual work.
+	 */
+	return qla4xxx_isns_build_request_packet(ha, buffer, buffer_size,
+	    ISNS_FCID_SCNDereg, ha->isns_transaction_id, 0,
+	    ha->isns_scn_dereg_attr_list, packet_size);
+}
+
+int
+qla4xxx_isns_build_registration_packet(scsi_qla_host_t *ha, uint8_t *buff,
+    uint32_t buff_size, uint8_t *isns_entity_id, uint8_t *ip_addr,
+    uint32_t port_number, uint32_t scn_port, uint32_t esi_port,
+    uint8_t *local_alias, uint32_t *packet_size)
+{
+	/*
+	 * Fill in all of the run time requested data in the attribute array,
+	 * then call build_request_packet to do the actual work.
+	 */
+	ha->isns_reg_attr_list[1].data = (unsigned long)isns_entity_id;
+	ha->isns_reg_attr_list[3].data = (unsigned long)isns_entity_id;
+	ha->isns_reg_attr_list[5].data = (unsigned long)ip_addr;
+	ha->isns_reg_attr_list[6].data = cpu_to_be32(port_number);
+	ha->isns_reg_attr_list[7].data = cpu_to_be32(scn_port);
+	ha->isns_reg_attr_list[8].data = cpu_to_be32(esi_port);
+	if (local_alias && local_alias[0])
+		ha->isns_reg_attr_list[11].data = (unsigned long)local_alias;
+	else
+		ha->isns_reg_attr_list[11].data =
+		    (unsigned long)"<No alias specified>";
+
+	return qla4xxx_isns_build_request_packet(ha, buff, buff_size,
+	    ISNS_FCID_DevAttrReg, ha->isns_transaction_id, 0,
+	    ha->isns_reg_attr_list, packet_size);
+}
+
+int
+qla4xxx_isns_build_deregistration_packet(scsi_qla_host_t *ha, uint8_t *buff,
+    uint32_t buff_size, uint8_t *isns_entity_id, uint8_t *ip_addr,
+    uint32_t port_number, uint32_t *packet_size)
+{
+	/*
+	 * Fill in all of the run time requested data in the attribute array,
+	 * then call build_request_packet to do the actual work.
+	 */
+	ha->isns_dereg_attr_list[2].data = (unsigned long)isns_entity_id;
+
+#if 0
+	ha->isns_dereg_attr_list[3].data = (unsigned long)ip_addr;
+	ha->isns_dereg_attr_list[4].data =
+	    (unsigned long)cpu_to_be32(port_number);
+
+#endif
+	return qla4xxx_isns_build_request_packet(ha, buff, buff_size,
+	    ISNS_FCID_DevDereg, ha->isns_transaction_id, 0,
+	    ha->isns_dereg_attr_list, packet_size);
+}
+
+int
+qla4xxx_isns_build_request_packet(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size, uint16_t function_id, uint16_t tx_id,
+    uint8_t use_replace_flag, ATTRIBUTE_LIST *attr_list, uint32_t *packet_size)
+{
+	ISNSP_MESSAGE_HEADER *isns_message;
+	uint8_t *ptr;
+	uint8_t *buffer_end;
+	uint8_t *payload_start;
+	uint32_t i;
+	uint8_t success;
+
+	/*
+	 * Ensure that the buffer size is at a minimum sufficient to hold the
+	 * message header plus at least one attribute.
+	 */
+	if (buffer_size < (sizeof(*isns_message) + sizeof(*attr_list)))
+		return QLA_ERROR;
+
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	buffer_end = (uint8_t *) ((unsigned long)buffer + buffer_size);
+
+	/* Initialize message header contents */
+	isns_message->isnsp_version = cpu_to_be16(ISNSP_VERSION);
+	isns_message->function_id = cpu_to_be16(function_id);
+	if (use_replace_flag)
+		isns_message->flags = cpu_to_be16(ISNSP_CLIENT_SENDER |
+		    ISNSP_FIRST_PDU | ISNSP_LAST_PDU | ISNSP_REPLACE_FLAG);
+	else
+		isns_message->flags = cpu_to_be16(ISNSP_CLIENT_SENDER |
+		    ISNSP_FIRST_PDU | ISNSP_LAST_PDU);
+
+	isns_message->transaction_id = cpu_to_be16(tx_id);
+	/* First and only packet in this message */
+	isns_message->sequence_id = 0;
+	ptr = payload_start = &isns_message->payload[0];
+
+	/*
+	 * Now that most of the message header has been initialized (we'll fill
+	 * in the size when we're finished), let's append the desired attributes
+	 * to the request packet.
+	 */
+	success = 1;
+	for (i = 0; attr_list[i].type && success; i++)
+		success = (qla4xxx_isns_append_attribute(ha, &ptr, buffer_end,
+		    &attr_list[i]) == QLA_SUCCESS);
+
+	if (!success) {
+		DEBUG5(printk("scsi%ld: %s: Ran out of buffer space\n",
+		    ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+
+	/*
+	 * We've successfully finished building the request packet.
+	 * Set the size field.
+	 */
+	isns_message->pdu_length = cpu_to_be16((unsigned long)ptr -
+	    (unsigned long) payload_start);
+	*packet_size = (uint32_t) ((unsigned long)ptr - (unsigned long)buffer);
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_build_server_request_response_packet(scsi_qla_host_t *ha,
+    uint8_t *buffer, uint32_t buffer_size, uint16_t function_id,
+    uint32_t error_code, uint16_t transaction_id, uint32_t *packet_size)
+{
+	ISNSP_MESSAGE_HEADER *isns_message;
+	ISNSP_RESPONSE_HEADER *isns_response;
+	uint8_t *ptr;
+	uint8_t *buffer_end;
+	uint8_t *payload_start;
+
+	/*
+	 * Ensure that the buffer size is at a minimum sufficient to hold the
+	 * message headers.
+	 */
+	if (buffer_size < (sizeof(ISNSP_MESSAGE_HEADER) +
+	    sizeof(ISNSP_RESPONSE_HEADER))) {
+		DEBUG2(printk("scsi%ld: %s: Insufficient buffer size %x\n",
+		    ha->host_no, __func__, buffer_size));
+		return QLA_ERROR;
+	}
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	isns_response = (ISNSP_RESPONSE_HEADER *) & isns_message->payload[0];
+	payload_start = (uint8_t *) isns_response;
+	buffer_end = (uint8_t *) (buffer + buffer_size);
+
+	/* Initialize message header contents. */
+	isns_message->isnsp_version = cpu_to_be16(ISNSP_VERSION);
+	isns_message->function_id = (function_id);
+
+	/*isns_message->function_id = cpu_to_be16(function_id); */
+	isns_message->flags =
+	    cpu_to_be16(ISNSP_CLIENT_SENDER | ISNSP_FIRST_PDU | ISNSP_LAST_PDU);
+	isns_message->transaction_id = (transaction_id);
+
+	/*isns_message->transaction_id = cpu_to_be16(transaction_id); */
+	/* First and only packet in this message */
+	isns_message->sequence_id = 0;
+	isns_response->error_code = cpu_to_be32(error_code);
+	ptr = &isns_response->attributes[0];
+
+	/* We've successfully finished building the request packet. */
+	isns_message->pdu_length = cpu_to_be16((unsigned long)ptr -
+	    (unsigned long) payload_start);
+	*packet_size = (unsigned long)ptr - (unsigned long)buffer;
+
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_build_dev_get_next_packet(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size, uint8_t *last_iscsi_name, uint32_t *packet_size)
+{
+	/*
+	 * Fill in all of the run time requested data in the attribute array
+	 * then call qla4xxx_isns_build_request_packet to do the actual work.
+	 */
+	if (last_iscsi_name && last_iscsi_name[0]) {
+		ha->isns_dev_get_next_attr_list[1].type = ISNS_ATTR_TYPE_STRING;
+		ha->isns_dev_get_next_attr_list[1].data =
+		    (unsigned long)last_iscsi_name;
+	} else {
+		ha->isns_dev_get_next_attr_list[1].type = ISNS_ATTR_TYPE_EMPTY;
+		ha->isns_dev_get_next_attr_list[1].data = 0;
+	}
+
+	return qla4xxx_isns_build_request_packet(ha, buffer, buffer_size,
+	    ISNS_FCID_DevGetNext, ha->isns_transaction_id, 0,
+	    ha->isns_dev_get_next_attr_list, packet_size);
+}
+
+int
+qla4xxx_isns_build_dev_attr_qry_packet(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size, uint8_t *object_iscsi_name, uint32_t *packet_size)
+{
+	/*
+	 * Fill in all of the run time requested data in the attribute array
+	 * then call qla4xxx_isns_build_request_packet to do the actual work.
+	 */
+	ha->isns_dev_attr_qry_attr_list[1].data =
+	    (unsigned long)object_iscsi_name;
+
+	return qla4xxx_isns_build_request_packet(ha, buffer, buffer_size,
+	    ISNS_FCID_DevAttrQry, ha->isns_transaction_id, 0,
+	    ha->isns_dev_attr_qry_attr_list, packet_size);
+}
+
+int
+qla4xxx_isns_parse_get_next_response(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size, uint32_t *isns_error, uint8_t *last_iscsi_name,
+    uint32_t last_iscsi_name_size, uint8_t *IsTarget)
+{
+	ISNSP_MESSAGE_HEADER *isns_message;
+	ISNSP_RESPONSE_HEADER *isns_response;
+	ISNS_ATTRIBUTE *isns_attr;
+	uint8_t *buffer_end;
+
+	*IsTarget = 0;
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	buffer_end = (uint8_t *) ((uint8_t *) & isns_message->payload[0] +
+	    be16_to_cpu(isns_message->pdu_length));
+
+	/* Validate pdu_length specified in the iSNS message header. */
+	if (((unsigned long)buffer_end - (unsigned long)buffer) > buffer_size) {
+		DEBUG5(printk("scsi%ld: %s: Invalid length field in "
+		    "iSNS response from iSNS server\n", ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+
+	/*
+	 * It is safe to assume from this point on that the pdu_length value
+	 * (and thus our idea about the end of the buffer) is valid.
+	 */
+	if (be16_to_cpu(isns_message->function_id) != ISNS_FCID_DevGetNextRsp) {
+		DEBUG5(printk("scsi%ld: %s: Invalid Function ID "
+		    "(0x%04x) in iSNS response from iSNS server\n",
+		    ha->host_no, __func__,
+		    be16_to_cpu(isns_message->function_id)));
+		return QLA_ERROR;
+	}
+
+	isns_response = (ISNSP_RESPONSE_HEADER *) & isns_message->payload[0];
+	*isns_error = be32_to_cpu(isns_response->error_code);
+	if (*isns_error) {
+		DEBUG2(printk("scsi%ld: %s: iSNS Error code: %d\n",
+		    ha->host_no, __func__, *isns_error));
+		if (*isns_error == ISNS_ERR_NO_SUCH_ENTRY) {
+			DEBUG2(printk("scsi%ld: %s: No more targets.\n",
+			    ha->host_no, __func__));
+			set_bit(ISNS_FLAG_DEV_SCAN_DONE, &ha->isns_flags);
+		} else {
+			DEBUG2(printk("scsi%ld: %s: Get Next failed. Error "
+			    "code %x\n", ha->host_no, __func__, *isns_error));
+		}
+		return QLA_ERROR;
+	}
+	isns_attr = (ISNS_ATTRIBUTE *) & isns_response->attributes[0];
+
+	/* Save the returned key attribute for the next DevGetNext request. */
+	if (VALIDATE_ATTR(isns_attr, buffer_end) &&
+	    be32_to_cpu(isns_attr->tag) == ISNS_ATTR_TAG_ISCSI_NAME) {
+		strncpy(last_iscsi_name, &isns_attr->value[0],
+		    last_iscsi_name_size);
+	} else {
+		DEBUG2(printk("scsi%ld: %s: Bad Key attribute in "
+		    "DevGetNextRsp\n", ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+
+	// Point to next attribute.
+	isns_attr = NEXT_ATTR(isns_attr);
+	if (VALIDATE_ATTR(isns_attr, buffer_end) &&
+	    be32_to_cpu(isns_attr->tag) == ISNS_ATTR_TAG_DELIMITER) {
+		;		/* Do nothing. */
+	} else {
+		DEBUG2(printk("scsi%ld: %s: No delimiter in DevGetNextRsp\n",
+		    ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+
+	*IsTarget = 1;		/*FIXME*/
+
+	/* Point to next attribute. */
+	isns_attr = NEXT_ATTR(isns_attr);
+	if (VALIDATE_ATTR(isns_attr, buffer_end) &&
+	    be32_to_cpu(isns_attr->tag) == ISNS_ATTR_TAG_ISCSI_NODE_TYPE) {
+		if (be32_to_cpu(*(uint32_t *) & isns_attr->value[0]) &
+		    ISCSI_NODE_TYPE_TARGET)
+			*IsTarget = 1;
+	}
+#if 0
+	else {
+		DEBUG5(printk("scsi%ld: %s: Bad operating attr in "
+		    "DevGetNextRsp (%d)\n", ha->host_no, __func__,
+		    be16_to_cpu(isns_attr->tag)));
+		return QLA_ERROR;
+	}
+
+#endif
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_parse_query_response(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size, uint32_t *isns_error,
+    ISNS_DISCOVERED_TARGET *isns_discovered_target, uint8_t *IsTarget,
+    uint8_t *last_iscsi_name)
+{
+	ISNSP_MESSAGE_HEADER *isns_message;
+	ISNSP_RESPONSE_HEADER *isns_response;
+	ISNS_ATTRIBUTE *isns_attr;
+	uint8_t *buffer_end;
+	uint8_t *tmpptr;
+	uint16_t wTmp;
+	uint32_t ulTmp;
+	uint32_t i;
+
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	buffer_end = &isns_message->payload[0] +
+	    be16_to_cpu(isns_message->pdu_length);
+
+	/* Validate pdu_length specified in the iSNS message header. */
+	if (((unsigned long)buffer_end - (unsigned long)buffer) > buffer_size) {
+		DEBUG5(printk("scsi%ld: %s: Invalid length field in "
+		    "iSNS response from iSNS server\n", ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+
+	/*
+	 * It is safe to assume from this point on that the pdu_length value
+	 * (and thus our idea about the end of the buffer) is valid.
+	 */
+	if (be16_to_cpu(isns_message->function_id) != ISNS_FCID_DevAttrQryRsp) {
+		DEBUG5(printk("scsi%ld: %s: Invalid Function ID %04x "
+		    "in iSNS response\n", ha->host_no, __func__,
+		    be16_to_cpu(isns_message->function_id)));
+		return QLA_ERROR;
+	}
+
+	isns_response = (ISNSP_RESPONSE_HEADER *) & isns_message->payload[0];
+	DEBUG2(printk("-----------------------------\n"));
+	DEBUG2(printk("scsi%ld: %s: DevAttrQry response from iSNS server:\n",
+	    ha->host_no, __func__));
+	*isns_error = be32_to_cpu(isns_response->error_code);
+	if (*isns_error) {
+		DEBUG5(printk("scsi%ld: %s: iSNS Query failed.  "
+		    "error_code %x.\n", ha->host_no, __func__, *isns_error));
+		return QLA_ERROR;
+	}
+	DEBUG2(printk("scsi%ld: %s: Attributes:\n", ha->host_no, __func__));
+
+	isns_attr = (ISNS_ATTRIBUTE *) & isns_response->attributes[0];
+
+	/* Skip key and delimiter attributes. */
+	while (VALIDATE_ATTR(isns_attr, buffer_end) &&
+	    be32_to_cpu(isns_attr->tag) != ISNS_ATTR_TAG_DELIMITER) {
+
+		/* Point to next attribute. */
+		if (be32_to_cpu(isns_attr->tag) == ISNS_ATTR_TAG_ISCSI_NAME) {
+			/*
+			 * Note that this string is in UTF-8 format.  In
+			 * production code, it would be necessary to convert
+			 * from UTF-8 before using the  string.
+			 */
+			DEBUG2(printk("scsi%ld: %s: MsgTag iSCSI Name: "
+			    "\"%s\"\n", ha->host_no, __func__,
+			    isns_attr->value));
+			if (strlen(isns_attr->value) > 256)
+				return QLA_ERROR;
+			strcpy(last_iscsi_name,
+			    (uint8_t *) &isns_attr->value[0]);
+		}
+		isns_attr = NEXT_ATTR(isns_attr);
+	}
+
+	if (!VALIDATE_ATTR(isns_attr, buffer_end) ||
+	    be32_to_cpu(isns_attr->tag) != ISNS_ATTR_TAG_DELIMITER) {
+		/* There was no delimiter attribute in the response. */
+		return QLA_ERROR;
+	}
+
+	/* Skip delimiter attribute. */
+	isns_attr = NEXT_ATTR(isns_attr);
+	while (VALIDATE_ATTR(isns_attr, buffer_end)) {
+		/*
+		 * We only need to parse for the operating attributes that we
+		 * requested in the DevAttrQuery.
+		 */
+		switch (be32_to_cpu(isns_attr->tag)) {
+		case ISNS_ATTR_TAG_ENTITY_PROTOCOL:
+			if (be32_to_cpu(*(uint32_t *) isns_attr->value) !=
+			    ENTITY_PROTOCOL_ISCSI) {
+				DEBUG5(printk("scsi%ld: %s: Entity "
+				    "does not support iSCSI protocol\n",
+				    ha->host_no, __func__));
+			}
+			break;
+
+		case ISNS_ATTR_TAG_ISCSI_NODE_TYPE:
+			switch (be32_to_cpu(*(uint32_t *) isns_attr->value)) {
+			case ISCSI_NODE_TYPE_TARGET:
+				*IsTarget = 1;
+				break;
+
+			case ISCSI_NODE_TYPE_INITIATOR:
+				*IsTarget = 0;
+				break;
+
+			case ISCSI_NODE_TYPE_CONTROL:
+				*IsTarget = 0;
+				break;
+
+			default:
+				*IsTarget = 0;
+				break;
+			}
+			break;
+
+		case ISNS_ATTR_TAG_MGMT_IP_ADDRESS:
+			/* WARNING: This doesn't handle IPv6 addresses. */
+			tmpptr = &isns_attr->value[0];
+			for (i = 0; i < 8; i++)
+				if (tmpptr[i])
+					return QLA_ERROR;
+
+			for (i = 8; i < 12; i++)
+				if (tmpptr[i] != 0 && tmpptr[i] != 0xFF)
+					return QLA_ERROR;
+
+			DEBUG5(printk("scsi%ld: %s: Management IP "
+			    "address: %u.%u.%u.%u\n", ha->host_no, __func__,
+			    tmpptr[12], tmpptr[13], tmpptr[14], tmpptr[15]));
+			break;
+
+		case ISNS_ATTR_TAG_PORTAL_IP_ADDRESS:
+			/* WARNING: This doesn't handle IPv6 addresses. */
+			tmpptr = &isns_attr->value[0];
+			for (i = 0; i < 8; i++)
+				if (tmpptr[i])
+					return QLA_ERROR;
+
+			for (i = 8; i < 12; i++)
+				if (tmpptr[i] != 0 && tmpptr[i] != 0xFF)
+					return QLA_ERROR;
+
+			DEBUG5(printk("scsi%ld: %s: Portal IP "
+			    "address: %u.%u.%u.%u\n", ha->host_no, __func__,
+			    tmpptr[12], tmpptr[13], tmpptr[14], tmpptr[15]));
+			if (isns_discovered_target->NumPortals >=
+			    ISNS_MAX_PORTALS)
+				break;
+
+			memcpy(isns_discovered_target->
+			    Portal[isns_discovered_target->NumPortals].IPAddr,
+			    &tmpptr[12], 4);
+			break;
+
+		case ISNS_ATTR_TAG_PORTAL_PORT:
+			wTmp = (uint16_t) (be32_to_cpu(
+			    *(uint32_t *)isns_attr->value));
+			DEBUG5(printk("scsi%ld: %s: Portal port: "
+			    "%u\n", ha->host_no, __func__,
+			    be32_to_cpu(*(uint32_t *)isns_attr-> value)));
+			if (isns_discovered_target->NumPortals >=
+			    ISNS_MAX_PORTALS)
+				break;
+
+			isns_discovered_target->
+				Portal[isns_discovered_target->NumPortals].
+				PortNumber = wTmp;
+			isns_discovered_target->NumPortals++;
+			break;
+
+		case ISNS_ATTR_TAG_PORTAL_SYMBOLIC_NAME:
+			/*
+			 * Note that this string is in UTF-8 format.  In
+			 * production code, it would be necessary to convert
+			 * from UTF-8 before using the  string.
+			 */
+			DEBUG5(printk("scsi%ld: %s: Portal Symbolic "
+			    "Name: \"%s\"\n", ha->host_no, __func__,
+			    &isns_attr->value[0]));
+
+#if 0
+			if (isns_discovered_target->NumPortals >=
+			    ISNS_MAX_PORTALS)
+				break;
+			qlstrncpy(isns_discovered_target->
+			    Portal[isns_discovered_target->NumPortals].
+			    SymbolicName, (uint8_t *) isns_attr->value, 32);
+			isns_discovered_target->
+				Portal[isns_discovered_target->NumPortals].
+				SymbolicName[31] = 0;
+#endif
+			break;
+
+		case ISNS_ATTR_TAG_SCN_PORT:
+			break;
+		case ISNS_ATTR_TAG_ESI_PORT:
+			break;
+		case ISNS_ATTR_TAG_ESI_INTERVAL:
+			break;
+		case ISNS_ATTR_TAG_REGISTRATION_PERIOD:
+			break;
+
+		case ISNS_ATTR_TAG_PORTAL_SECURITY_BITMAP:
+			ulTmp = be32_to_cpu(*(uint32_t *) isns_attr->value);
+
+			/* isns_discovered_target->SecurityBitmap = ulTmp; */
+			break;
+
+		case ISNS_ATTR_TAG_ENTITY_IDENTIFIER:
+			/*
+			 * Note that this string is in UTF-8 format.  In
+			 * production code, it would be necessary to convert
+			 * from UTF-8 before using the  string.
+			 */
+			break;
+
+		case ISNS_ATTR_TAG_ISCSI_NAME:
+			/*
+			 * Note that this string is in UTF-8 format.  In
+			 * production code, it would be necessary to convert
+			 * from UTF-8 before using the  string.
+			 */
+			if (strlen(isns_attr->value) > 256)
+				return (QLA_ERROR);
+			strcpy(isns_discovered_target->NameString,
+			       (uint8_t *) isns_attr->value);
+			break;
+
+		case ISNS_ATTR_TAG_ISCSI_ALIAS:
+			/*
+			 * Note that this string is in UTF-8 format.  In
+			 * production code, it would be necessary to convert
+			 * from UTF-8 before using the  string.
+			 */
+			if (strlen(isns_attr->value) <= 32)
+				strcpy(isns_discovered_target->Alias,
+				       (uint8_t *) isns_attr->value);
+			break;
+
+		case ISNS_ATTR_TAG_DD_ID:
+			ulTmp = be32_to_cpu(*(uint32_t *) isns_attr->value);
+			isns_discovered_target->DDID = ulTmp;
+			break;
+
+		default:
+			break;
+		}
+
+		/* Point to next attribute. */
+		isns_attr = NEXT_ATTR(isns_attr);
+	}
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_process_response(scsi_qla_host_t *ha,
+    PASSTHRU_STATUS_ENTRY *sts_entry)
+{
+	uint32_t handle = le32_to_cpu(sts_entry->handle);
+	uint32_t inResidual = le32_to_cpu(sts_entry->inResidual);
+	uint16_t connectionID = le16_to_cpu(sts_entry->connectionID);
+	PDU_ENTRY *pdu_entry =
+	    (PDU_ENTRY *) & ha->pdu_queue[IOCB_ISNS_PT_PDU_INDEX(handle)];
+	uint32_t pdu_type = IOCB_ISNS_PT_PDU_TYPE(handle);
+	uint8_t status = QLA_SUCCESS;
+
+	DEBUG5(printk("scsi%ld: %s isns_flags 0x%lx to=0x%x "
+	    "IOCS=0x%02x OutResidual/Len=0x%x/0x%x InResidual/Len=0x%x/0x%x\n",
+	    ha->host_no, __func__, ha->isns_flags,
+	    le16_to_cpu(sts_entry->timeout), sts_entry->completionStatus,
+	    le32_to_cpu(sts_entry->outResidual), pdu_entry->SendBuffLen,
+	    inResidual, pdu_entry->RecvBuffLen));
+	if (pdu_entry->RecvBuffLen - inResidual) {
+		DEBUG5(printk("PDU (0x%p) <-\n", pdu_entry->Buff));
+		DEBUG5(qla4xxx_dump_bytes(pdu_entry->Buff,
+		    pdu_entry->RecvBuffLen - inResidual));
+	}
+	if (sts_entry->completionStatus != PASSTHRU_STATUS_COMPLETE) {
+		qla4xxx_free_pdu(ha, pdu_entry);
+		set_bit(DPC_ISNS_RESTART, &ha->dpc_flags);
+		goto exit_pt_sts;
+	}
+	switch (pdu_type) {
+	case ISNS_ASYNCH_RSP_PDU:
+		qla4xxx_free_pdu(ha, pdu_entry);
+		break;
+
+	case ISNS_ASYNCH_REQ_PDU:
+		pdu_entry->RecvBuffLen -= inResidual;
+		DEBUG5(printk("scsi%ld: %s ISNS_ASYNCH_REQ_PDU  PDU "
+		    "Buff=%p, PDU RecvLen=0x%X\n", ha->host_no, __func__,
+		    pdu_entry->Buff, pdu_entry->RecvBuffLen));
+		if (qla4xxx_isns_reassemble_pdu(ha, pdu_entry->Buff,
+		    &pdu_entry->RecvBuffLen) != QLA_SUCCESS) {
+			DEBUG2(printk("scsi%ld: %s ISNS_ASYNCH_REQ_PDU "
+			    "reassemble_pdu failed!\n", ha->host_no, __func__));
+			goto exit_pt_sts;
+		}
+		if (qla4xxx_isns_parse_and_dispatch_server_request(ha,
+		    pdu_entry->Buff, pdu_entry->RecvBuffLen, connectionID) !=
+		    QLA_SUCCESS) {
+			DEBUG2(printk("scsi%ld: %s ISNS_ASYNCH_REQ_PDU "
+			    "parse_and_dispatch_server_request failed!\n",
+			    ha->host_no, __func__));
+		}
+		qla4xxx_free_pdu(ha, pdu_entry);
+		break;
+
+	case ISNS_REQ_RSP_PDU:
+		pdu_entry->RecvBuffLen -= inResidual;
+		if (qla4xxx_isns_reassemble_pdu(ha, pdu_entry->Buff,
+		    &pdu_entry->RecvBuffLen) != QLA_SUCCESS) {
+			DEBUG2(printk("scsi%ld: %s ISNS_REQ_RSP_PDU "
+			    "reassemble_pdu failed!\n", ha->host_no, __func__));
+			goto exit_pt_sts;
+		}
+		if (qla4xxx_isns_parse_and_dispatch_server_response(ha,
+		    pdu_entry->Buff, pdu_entry->RecvBuffLen) != QLA_SUCCESS) {
+			DEBUG2(printk("scsi%ld: %s ISNS_REQ_RSP_PDU "
+			    "parse_and_dispatch_server_response failed!\n",
+			    ha->host_no, __func__));
+		}
+		qla4xxx_free_pdu(ha, pdu_entry);
+		break;
+
+	default:
+		DEBUG2(printk("scsi%ld: %s iSNS handle 0x%x invalid\n",
+		    ha->host_no, __func__, sts_entry->handle));
+		status = QLA_ERROR;
+		break;
+	}
+exit_pt_sts:
+	return status;
+}
+
+int
+qla4xxx_isns_reassemble_pdu(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t *buffer_size)
+{
+	uint16_t copy_size = 0;
+	uint32_t new_pdu_length = 0;
+	uint32_t bytes_remaining;
+	uint32_t pdu_size;
+	uint8_t *dest_ptr = NULL;
+	uint8_t *src_ptr = NULL;
+	ISNSP_MESSAGE_HEADER *isns_message;
+	uint32_t i;
+
+	/*
+	 * We have read all the PDU's for this message.  Now reassemble them
+	 * into a single PDU.
+	 */
+	if (buffer == NULL || buffer_size == 0)
+		return QLA_ERROR;
+
+	if (*buffer_size == 0) {
+		DEBUG5(printk(KERN_WARNING "scsi%ld: %s: Length 0.  "
+		    "Nothing to reassemble\n", ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+	new_pdu_length = 0;
+	bytes_remaining = *buffer_size;
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	if ((!be16_to_cpu(isns_message->flags) & ISNSP_FIRST_PDU)) {
+		*buffer_size = 0;
+		return QLA_ERROR;
+	}
+
+	/* First, calculate the size of the payload for the collapsed PDU */
+	do {
+		if (bytes_remaining < sizeof(ISNSP_MESSAGE_HEADER)) {
+			DEBUG2(printk(KERN_WARNING
+			    "scsi%ld: %s: Length 0.  bytes_remaining < "
+			    "sizeof(ISNSP_MESSAGE_HEADER).  BytesRemaining "
+			    "%x, discard PDU\n", ha->host_no, __func__,
+			    bytes_remaining));
+			*buffer_size = 0;
+			return QLA_ERROR;
+		} else if (be16_to_cpu(isns_message->isnsp_version) !=
+		    ISNSP_VERSION) {
+			DEBUG5(printk(KERN_WARNING
+			    "scsi%ld: %s: Bad Version number in iSNS Message "
+			    "Header (%04x, expecting %04x), discard PDU\n",
+			    ha->host_no, __func__,
+			    be16_to_cpu(isns_message-> isnsp_version),
+			    ISNSP_VERSION));
+			*buffer_size = 0;
+			return QLA_ERROR;
+		} else if (bytes_remaining < sizeof(ISNSP_MESSAGE_HEADER) +
+		    be16_to_cpu(isns_message->pdu_length)) {
+			DEBUG5(printk(KERN_WARNING
+			    "scsi%d: %s: Short PDU in sequence. "
+			    "BytesRemaining %x, discard PDU\n", ha->host_no,
+			    __func__, bytes_remaining));
+			*buffer_size = 0;
+			return QLA_ERROR;
+		} else if ((bytes_remaining == sizeof(ISNSP_MESSAGE_HEADER) +
+		    be16_to_cpu(isns_message->pdu_length)) &&
+			(!(be16_to_cpu(isns_message->flags) &
+			    ISNSP_LAST_PDU))) {
+			*buffer_size = 0;
+			return QLA_ERROR;
+		}
+
+		new_pdu_length += be16_to_cpu(isns_message->pdu_length);
+		pdu_size = sizeof(ISNSP_MESSAGE_HEADER) +
+		    be16_to_cpu(isns_message->pdu_length);
+		isns_message = (ISNSP_MESSAGE_HEADER *)
+			((uint8_t *) isns_message + pdu_size);
+		bytes_remaining = bytes_remaining > pdu_size ?
+		    bytes_remaining - pdu_size : 0;
+	} while (bytes_remaining);
+
+	dest_ptr = buffer;
+	bytes_remaining = *buffer_size;
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	i = 0;
+
+	DEBUG5(printk("scsi%ld: %s: PDU%d=%p payloadLength=%04x\n",
+	    ha->host_no, __func__, i, dest_ptr,
+	    be16_to_cpu(isns_message->pdu_length)));
+
+	while (bytes_remaining) {
+		/*
+		 * If this is the first PDU perform no copy, otherwise copy
+		 * just the payload.
+		 */
+		if (dest_ptr != buffer) {
+			i++;
+			copy_size = be16_to_cpu(isns_message->pdu_length);
+			src_ptr = (uint8_t *) isns_message->payload;
+			DEBUG5(printk("scsi%ld: %s: PDU%d %p <= %p "
+			    "(%04x)\n", ha->host_no, __func__, i, dest_ptr,
+			    src_ptr, copy_size));
+			memcpy(dest_ptr, src_ptr, copy_size);
+			dest_ptr += copy_size;
+		}
+		pdu_size = sizeof(ISNSP_MESSAGE_HEADER) +
+		    be16_to_cpu(isns_message->pdu_length);
+		isns_message = (ISNSP_MESSAGE_HEADER *)
+			((uint8_t *) isns_message + pdu_size);
+		bytes_remaining = bytes_remaining > pdu_size ?
+		    bytes_remaining - pdu_size : 0;
+	}
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+
+	/* Update pdu_length field in reassembled PDU to reflect actual */
+	/* combined PDU payload length. */
+	isns_message->pdu_length = cpu_to_be16(new_pdu_length);
+
+	/* Also set LAST_PDU flag in reassembled PDU */
+	isns_message->flags |= cpu_to_be16(ISNSP_LAST_PDU);
+
+	/* Return number of bytes in buffer to caller. */
+	*buffer_size = new_pdu_length + sizeof(ISNSP_MESSAGE_HEADER);
+
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_scn(scsi_qla_host_t *ha, uint8_t *req_buffer,
+    uint32_t req_buffer_size, uint16_t ConnectionId)
+{
+	ISNSP_MESSAGE_HEADER *isns_req_message;
+	ISNSP_MESSAGE_HEADER *isns_rsp_message;
+	ISNSP_RESPONSE_HEADER *isns_response;
+	PDU_ENTRY *pdu_entry;
+	ISNS_ATTRIBUTE *attr;
+	uint8_t *req_buffer_end;
+	uint8_t *rsp_buffer_end;
+	uint8_t *payload_start;
+	uint8_t *ptr;
+	uint32_t packet_size;
+	uint32_t copy_size;
+
+	isns_req_message = (ISNSP_MESSAGE_HEADER *) req_buffer;
+	if ((pdu_entry = qla4xxx_get_pdu(ha, PAGE_SIZE)) == NULL) {
+		DEBUG5(printk("scsi%ld: %s: qla4xxx_get_pdu failed\n",
+		    ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+
+	/* First, setup the response packet. */
+	if (qla4xxx_isns_build_server_request_response_packet(ha,
+	    pdu_entry->Buff, pdu_entry->BuffLen,
+	    be16_to_cpu(isns_req_message->function_id) | 0x8000,
+	    ISNS_ERR_SUCCESS, be16_to_cpu(isns_req_message->transaction_id),
+	    &packet_size) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s: qla4xxx_isns_build_server_"
+		    "request_response_packet failed\n", ha->host_no, __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+
+	isns_rsp_message = (ISNSP_MESSAGE_HEADER *) pdu_entry->Buff;
+	isns_response = (ISNSP_RESPONSE_HEADER *) &
+	    isns_rsp_message->payload[0];
+	payload_start = (uint8_t *) isns_response;
+	rsp_buffer_end = (uint8_t *) (pdu_entry->Buff + pdu_entry->BuffLen);
+	ptr = &isns_response->attributes[0];
+	req_buffer_end = (uint8_t *) ((uint8_t *) &
+	    isns_req_message->payload[0] +
+	    be16_to_cpu(isns_req_message->pdu_length));
+
+	/*
+	 * Point to the source attribute in the request.  We need to return
+	 * only this attribute in the SCN Response.
+	 */
+	attr = (ISNS_ATTRIBUTE *) & isns_req_message->payload[0];
+	if (!VALIDATE_ATTR(attr, req_buffer_end)) {
+		isns_response->error_code = cpu_to_be32(ISNS_ERR_MSG_FORMAT);
+		DEBUG5(printk("scsi%ld: %s: Malformed packet\n",
+		    ha->host_no, __func__));
+	}
+
+	/* Validate that this is an iSCSI Name attribute. */
+	if (be32_to_cpu(attr->tag) != ISNS_ATTR_TAG_ISCSI_NAME) {
+		DEBUG5(printk("scsi%ld: %s: Did not find iSCSN Name "
+		    "attribute\n", ha->host_no, __func__));
+	}
+
+	/* Copy source attribute to return buffer. */
+	copy_size = sizeof(ISNS_ATTRIBUTE) + be32_to_cpu(attr->length);
+	if (ptr + copy_size < rsp_buffer_end) {
+		/*
+		 * Attribute will fit in the response buffer.  Go ahead
+		 * and copy it.
+		 */
+		memcpy(ptr, attr, copy_size);
+		ptr += copy_size;
+	} else {
+		DEBUG5(printk("scsi%ld: %s: Insufficient buffer size\n",
+		    ha->host_no, __func__));
+	}
+
+	/* We've successfully finished building the response packet. */
+	/* Set the size field. */
+	isns_rsp_message->pdu_length = cpu_to_be16((unsigned long)ptr -
+	    (unsigned long) payload_start);
+	packet_size = (unsigned long)ptr - (unsigned long)pdu_entry->Buff;
+	pdu_entry->SendBuffLen = packet_size;
+	pdu_entry->RecvBuffLen = 0;
+	if (qla4xxx_send_passthru0_iocb(ha, ISNS_DEVICE_INDEX, ConnectionId,
+	    pdu_entry->DmaBuff, pdu_entry->SendBuffLen, pdu_entry->RecvBuffLen,
+	    PT_FLAG_ISNS_PDU, qla4xxx_isns_build_iocb_handle(ha,
+		    ISNS_ASYNCH_RSP_PDU, pdu_entry)) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  "
+		    "qla4xxx_send_passthru0_iocb failed\n", ha->host_no,
+		    __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+
+	if (test_bit(ISNS_FLAG_SCN_IN_PROGRESS, &ha->isns_flags)) {
+		set_bit(ISNS_FLAG_SCN_RESTART, &ha->isns_flags);
+	} else {
+		set_bit(ISNS_FLAG_SCN_IN_PROGRESS, &ha->isns_flags);
+		clear_bit(ISNS_FLAG_SCN_RESTART, &ha->isns_flags);
+		ha->isns_num_discovered_targets = 0;
+		if (qla4xxx_isns_dev_get_next(ha, NULL) != QLA_SUCCESS) {
+			DEBUG5(printk("scsi%ld: %s: "
+			    "qla4xxx_isns_dev_get_next failed\n", ha->host_no,
+			    __func__));
+			ISNS_CLEAR_FLAGS(ha);
+		}
+	}
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_esi(scsi_qla_host_t *ha, uint8_t *req_buffer,
+    uint32_t req_buffer_size, uint16_t ConnectionId)
+{
+	ISNSP_MESSAGE_HEADER *isns_req_message;
+	ISNSP_MESSAGE_HEADER *isns_rsp_message;
+	ISNSP_RESPONSE_HEADER *isns_response;
+	PDU_ENTRY *pdu_entry;
+	ISNS_ATTRIBUTE *attr;
+	uint8_t *req_buffer_end;
+	uint8_t *rsp_buffer_end;
+	uint8_t *payload_start;
+	uint8_t *ptr;
+	uint32_t packet_size;
+	uint32_t copy_size;
+
+	isns_req_message = (ISNSP_MESSAGE_HEADER *) req_buffer;
+	if ((pdu_entry = qla4xxx_get_pdu(ha, req_buffer_size +
+	    sizeof(uint32_t))) == NULL) {
+		DEBUG5(printk("scsi%ld: %s:  qla4xxx_get_pdu failed\n",
+		    ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+
+	/* First, setup the response packet. */
+	if (qla4xxx_isns_build_server_request_response_packet(ha,
+	    pdu_entry->Buff, pdu_entry->BuffLen,
+	    be16_to_cpu(isns_req_message->function_id | 0x8000),
+	    ISNS_ERR_SUCCESS, be16_to_cpu(isns_req_message->transaction_id),
+	    &packet_size) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  "
+		    "qla4xxx_isns_build_server_request_response_packet "
+		    "failed\n", ha->host_no, __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+
+	isns_rsp_message = (ISNSP_MESSAGE_HEADER *) pdu_entry->Buff;
+	isns_response = (ISNSP_RESPONSE_HEADER *) &
+	    isns_rsp_message->payload[0];
+	payload_start = (uint8_t *) isns_response;
+	rsp_buffer_end = (uint8_t *) (pdu_entry->Buff + pdu_entry->BuffLen);
+	ptr = &isns_response->attributes[0];
+	req_buffer_end = (uint8_t *) ((uint8_t *) &
+	    isns_req_message->payload[0] +
+	    be16_to_cpu(isns_req_message->pdu_length));
+
+	/* Point to the source attribute in the request.  We need to return */
+	/* all attributes in the ESI Response. */
+	attr = (ISNS_ATTRIBUTE *) & isns_req_message->payload[0];
+
+	/* Copy source attributes to return buffer. */
+	copy_size = req_buffer_end - (uint8_t *) attr;
+	if (ptr + copy_size < rsp_buffer_end) {
+		/* Attributes will fit in the response buffer.  Go ahead */
+		/* and copy them. */
+		memcpy(ptr, attr, copy_size);
+		ptr += copy_size;
+	} else {
+		DEBUG5(printk("scsi%ld: %s: Insufficient buffer size\n",
+		    ha->host_no, __func__));
+	}
+
+	/* We've successfully finished building the response packet. */
+	/* Set the size field. */
+	isns_rsp_message->pdu_length = cpu_to_be16((unsigned long)ptr -
+	    (unsigned long) payload_start);
+	packet_size = (unsigned long)ptr - (unsigned long)pdu_entry->Buff;
+	pdu_entry->SendBuffLen = packet_size;
+	pdu_entry->RecvBuffLen = 0;
+	if (qla4xxx_send_passthru0_iocb(ha, ISNS_DEVICE_INDEX, ConnectionId,
+	    pdu_entry->DmaBuff, pdu_entry->SendBuffLen, pdu_entry->RecvBuffLen,
+	    PT_FLAG_ISNS_PDU, qla4xxx_isns_build_iocb_handle(ha,
+		    ISNS_ASYNCH_RSP_PDU, pdu_entry)) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  "
+		    "qla4xxx_send_passthru0_iocb failed\n", ha->host_no,
+		    __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_server_request_error(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size, uint16_t connection_id, uint32_t error_code)
+{
+	PDU_ENTRY *pdu_entry;
+	ISNSP_MESSAGE_HEADER *isns_message;
+	uint16_t function_id;
+	uint32_t packet_size;
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	function_id = be16_to_cpu(isns_message->function_id);
+
+	// Return "Message Format Error"
+	if ((pdu_entry = qla4xxx_get_pdu(ha, sizeof(ISNSP_MESSAGE_HEADER) +
+	    sizeof(uint32_t))) == NULL) {
+		DEBUG5(printk("scsi%ld: %s:  qla4xxx_get_pdu failed\n",
+		    ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+
+	if (qla4xxx_isns_build_server_request_response_packet(ha,
+	    pdu_entry->Buff, pdu_entry->BuffLen,
+	    be16_to_cpu(isns_message->function_id) | 0x8000, error_code,
+	    be16_to_cpu(isns_message->transaction_id), &packet_size) !=
+	    QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  "
+		    "qla4xxx_isns_build_server_request_response_packet "
+		    "failed\n", ha->host_no, __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+
+	pdu_entry->SendBuffLen = packet_size;
+	pdu_entry->RecvBuffLen = 0;
+	if (qla4xxx_send_passthru0_iocb(ha, ISNS_DEVICE_INDEX, connection_id,
+	    pdu_entry->DmaBuff, pdu_entry->SendBuffLen, pdu_entry->RecvBuffLen,
+	    PT_FLAG_ISNS_PDU, qla4xxx_isns_build_iocb_handle(ha,
+		    ISNS_ASYNCH_RSP_PDU, pdu_entry)) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  "
+		    "qla4xxx_send_passthru0_iocb failed\n", ha->host_no,
+		    __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_parse_and_dispatch_server_request(scsi_qla_host_t *ha,
+    uint8_t *buffer, uint32_t buffer_size, uint16_t connection_id)
+{
+	ISNSP_MESSAGE_HEADER *isns_message;
+	uint16_t function_id;
+	uint16_t transaction_id;
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	function_id = be16_to_cpu(isns_message->function_id);
+	transaction_id = be16_to_cpu(isns_message->transaction_id);
+
+	/* Validate pdu_length specified in the iSNS message header. */
+	if ((offsetof(ISNSP_MESSAGE_HEADER, payload) +
+	    be16_to_cpu(isns_message->pdu_length)) > buffer_size) {
+		DEBUG5(printk("scsi%ld: %s: Invalid message size %u "
+		    "%u\n", ha->host_no, __func__,
+		    (uint32_t) (offsetof(ISNSP_MESSAGE_HEADER, payload) +
+			be16_to_cpu(isns_message->pdu_length)), buffer_size));
+		if (function_id <= ISNS_FCID_ESI) {
+			return qla4xxx_isns_server_request_error(ha, buffer,
+			    buffer_size, connection_id, ISNS_ERR_MSG_FORMAT);
+		}
+		return QLA_ERROR;
+	}
+
+	/* It is safe to assume from this point on that the pdu_length value */
+	/* (and thus our idea about the end of the buffer) is valid. */
+	switch (function_id) {
+	case ISNS_FCID_SCN:
+		return qla4xxx_isns_scn(ha, buffer, buffer_size, connection_id);
+		break;
+
+	case ISNS_FCID_ESI:
+		return qla4xxx_isns_esi(ha, buffer, buffer_size, connection_id);
+		break;
+
+	default:
+		if (function_id <= ISNS_FCID_ESI) {
+			/* Return "Message Not Supported" */
+			return qla4xxx_isns_server_request_error(ha, buffer,
+			    buffer_size, connection_id,
+			    ISNS_ERR_MSG_NOT_SUPPORTED);
+		}
+		return QLA_ERROR;
+		break;
+	}
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_parse_and_dispatch_server_response(scsi_qla_host_t *ha,
+    uint8_t *buffer, uint32_t buffer_size)
+{
+	ISNSP_MESSAGE_HEADER *isns_message;
+	ISNSP_RESPONSE_HEADER *isns_response;
+	ISNS_ATTRIBUTE *isns_attr;
+	uint16_t function_id;
+	uint16_t transaction_id;
+	uint8_t *buffer_end;
+
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	buffer_end = (uint8_t *) ((uint8_t *) isns_message->payload +
+	    be16_to_cpu(isns_message->pdu_length));
+	isns_attr = (ISNS_ATTRIBUTE *) isns_message->payload;
+
+	/* Validate pdu_length specified in the iSNS message header. */
+	if (((uint32_t *) buffer_end - (uint32_t *) buffer) > buffer_size) {
+		DEBUG5(printk("scsi%ld: %s: Invalid message size %u "
+		    "%u\n", ha->host_no, __func__,
+		    (unsigned int)((uint32_t *) buffer_end -
+			(uint32_t *) buffer), buffer_size));
+		return QLA_ERROR;
+	}
+	transaction_id = be16_to_cpu(isns_message->transaction_id);
+	function_id = be16_to_cpu(isns_message->function_id);
+
+	/*
+	 * It is safe to assume from this point on that the pdu_length value
+	 * (and thus our idea about the end of the buffer) is valid.
+	 */
+	if (transaction_id > ha->isns_transaction_id) {
+		DEBUG5(printk("scsi%ld: %s: Invalid message "
+		    "transaction ID recv %x exp %x\n", ha->host_no, __func__,
+		    transaction_id, ha->isns_transaction_id));
+		DEBUG5(qla4xxx_dump_bytes(buffer, buffer_size));
+		set_bit(DPC_ISNS_RESTART, &ha->dpc_flags);
+		return QLA_ERROR;
+	}
+	isns_response = (ISNSP_RESPONSE_HEADER *) & isns_message->payload[0];
+
+	switch (function_id) {
+	case ISNS_FCID_DevAttrRegRsp:
+		DEBUG5(printk("scsi%ld: %s: received %d "
+		    "DevAttrRegRsp\n", ha->host_no, __func__, transaction_id));
+		return qla4xxx_isns_dev_attr_reg_rsp(ha, buffer, buffer_size);
+
+	case ISNS_FCID_DevAttrQryRsp:
+		return qla4xxx_isns_dev_attr_qry_rsp(ha, buffer, buffer_size);
+
+	case ISNS_FCID_DevGetNextRsp:
+		return qla4xxx_isns_dev_get_next_rsp(ha, buffer, buffer_size);
+
+	case ISNS_FCID_DevDeregRsp:
+		return qla4xxx_isns_dev_dereg_rsp(ha, buffer, buffer_size);
+
+	case ISNS_FCID_SCNRegRsp:
+		return qla4xxx_isns_scn_reg_rsp(ha, buffer, buffer_size);
+
+	case ISNS_FCID_SCNDeregRsp:
+		return qla4xxx_isns_scn_dereg_rsp(ha, buffer, buffer_size);
+
+	default:
+		DEBUG5(printk("scsi%ld: %s: Received %d Unknown iSNS "
+		    "function_id %x\n", ha->host_no, __func__, transaction_id,
+		    function_id));
+		break;
+	}
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_dev_attr_reg(scsi_qla_host_t *ha)
+{
+	PDU_ENTRY *pdu_entry;
+	uint32_t packet_size;
+
+	pdu_entry = qla4xxx_get_pdu(ha, PAGE_SIZE);
+	if (pdu_entry == NULL) {
+		DEBUG5(printk("scsi%ld: %s: get pdu failed\n",
+		    ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+
+	if (qla4xxx_isns_build_registration_packet(ha, pdu_entry->Buff,
+	    pdu_entry->BuffLen, ha->isns_entity_id, ha->ip_address,
+	    ha->isns_remote_port_num, ha->isns_scn_port_num,
+	    ha->isns_esi_port_num, ha->alias, &packet_size) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s: "
+		    "qla4xxx_isns_build_registration_packet failed\n",
+		    ha->host_no, __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	pdu_entry->SendBuffLen = packet_size;
+	pdu_entry->RecvBuffLen = pdu_entry->BuffLen;
+	DEBUG5(printk("---------------------------\n"));
+	DEBUG5(printk("scsi%ld: %s:                    sending %d "
+	    "DevAttrReg\n", ha->host_no, __func__, ha->isns_transaction_id));
+	DEBUG5(printk("PDU (0x%p) 0x%x ->\n", pdu_entry->Buff,
+	    pdu_entry->SendBuffLen));
+	DEBUG5(qla4xxx_dump_bytes(pdu_entry->Buff, pdu_entry->SendBuffLen));
+	DEBUG5(printk("scsi%ld: %s: Registering iSNS . . .\n",
+	    ha->host_no, __func__));
+	if (qla4xxx_send_passthru0_iocb(ha, ISNS_DEVICE_INDEX,
+	    ISNS_DEFAULT_SERVER_CONN_ID, pdu_entry->DmaBuff,
+	    pdu_entry->SendBuffLen, pdu_entry->RecvBuffLen, PT_FLAG_ISNS_PDU |
+	    PT_FLAG_WAIT_4_RESPONSE, qla4xxx_isns_build_iocb_handle(ha,
+		    ISNS_REQ_RSP_PDU, pdu_entry)) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s: "
+		    "qla4xxx_send_passthru0_iocb failed\n", ha->host_no,
+		    __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	ha->isns_transaction_id++;
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_dev_attr_reg_rsp(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size)
+{
+	ISNSP_MESSAGE_HEADER *isns_message;
+	ISNSP_RESPONSE_HEADER *isns_response;
+	uint32_t error_code;
+
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	isns_response = (ISNSP_RESPONSE_HEADER *) & isns_message->payload[0];
+	error_code = be32_to_cpu(isns_response->error_code);
+	if (error_code) {
+		DEBUG5(printk("scsi%ld: %s: iSNS DevAttrReg failed, "
+		    "error code (%x) \"%s\"\n", ha->host_no, __func__,
+		    error_code, isns_error_code_msg[error_code]));
+		clear_bit(ISNS_FLAG_ISNS_SRV_REGISTERED, &ha->isns_flags);
+		return QLA_ERROR;
+	}
+	set_bit(ISNS_FLAG_ISNS_SRV_REGISTERED, &ha->isns_flags);
+	if (qla4xxx_isns_scn_reg(ha) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s: qla4xxx_isns_scn_reg "
+		    "failed\n", ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_scn_reg(scsi_qla_host_t *ha)
+{
+	PDU_ENTRY *isns_pdu_entry;
+	uint32_t packet_size;
+
+	if ((isns_pdu_entry = qla4xxx_get_pdu(ha, PAGE_SIZE)) == NULL) {
+		DEBUG5(printk("scsi%ld: %s: qla4xxx_get_pdu failed\n",
+		    ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+	if (qla4xxx_isns_build_scn_registration_packet(ha,
+	    isns_pdu_entry->Buff, isns_pdu_entry->BuffLen, &packet_size) !=
+	    QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s: qla4xxx_isns_build_scn_"
+		    "registration_packet failed\n", ha->host_no, __func__));
+		qla4xxx_free_pdu(ha, isns_pdu_entry);
+		return QLA_ERROR;
+	}
+	isns_pdu_entry->SendBuffLen = packet_size;
+	isns_pdu_entry->RecvBuffLen = isns_pdu_entry->BuffLen;
+	DEBUG5(printk("---------------------------\n"));
+	DEBUG5(printk("scsi%ld :%s:                        sending  "
+	    "%d SCNReg\n", ha->host_no, __func__, ha->isns_transaction_id));
+	DEBUG5(printk("PDU (0x%p) 0x%x ->\n", isns_pdu_entry->Buff,
+	    isns_pdu_entry->SendBuffLen));
+	DEBUG5(qla4xxx_dump_bytes(isns_pdu_entry->Buff,
+	    isns_pdu_entry->SendBuffLen));
+	if (qla4xxx_send_passthru0_iocb(ha, ISNS_DEVICE_INDEX,
+	    ISNS_DEFAULT_SERVER_CONN_ID, isns_pdu_entry->DmaBuff,
+	    isns_pdu_entry->SendBuffLen, isns_pdu_entry->RecvBuffLen,
+	    PT_FLAG_ISNS_PDU | PT_FLAG_WAIT_4_RESPONSE,
+	    qla4xxx_isns_build_iocb_handle(ha, ISNS_REQ_RSP_PDU,
+		    isns_pdu_entry)) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s: "
+		    "qla4xxx_send_passthru0_iocb failed\n", ha->host_no,
+		    __func__));
+		qla4xxx_free_pdu(ha, isns_pdu_entry);
+		return QLA_ERROR;
+	}
+	ha->isns_transaction_id++;
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_scn_reg_rsp(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size)
+{
+	ISNSP_MESSAGE_HEADER *isns_message;
+	ISNSP_RESPONSE_HEADER *isns_response;
+
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	isns_response = (ISNSP_RESPONSE_HEADER *) isns_message->payload;
+	if (isns_response->error_code) {
+		DEBUG5(printk("scsi%ld: %s: iSNS SCNReg failed, error "
+		    "code %x\n", ha->host_no, __func__,
+		    be32_to_cpu(isns_response->error_code)));
+		clear_bit(ISNS_FLAG_ISNS_SCN_REGISTERED, &ha->isns_flags);
+		return QLA_ERROR;
+	}
+	set_bit(ISNS_FLAG_ISNS_SCN_REGISTERED, &ha->isns_flags);
+	ha->isns_num_discovered_targets = 0;
+	if (qla4xxx_isns_dev_get_next(ha, NULL) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s: qla4xxx_isns_dev_get_next "
+		    "failed\n", ha->host_no, __func__));
+	}
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_dev_attr_qry(scsi_qla_host_t *ha, uint8_t *last_iscsi_name)
+{
+	PDU_ENTRY *pdu_entry;
+	uint32_t packet_size;
+
+	if ((pdu_entry = qla4xxx_get_pdu(ha, PAGE_SIZE)) == NULL) {
+		DEBUG5(printk("scsi%ld: %s:  qla4xxx_get_pdu failed\n",
+		    ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+	if (qla4xxx_isns_build_dev_attr_qry_packet(ha, pdu_entry->Buff,
+	    pdu_entry->BuffLen, last_iscsi_name, &packet_size) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  "
+		    "qla4xxx_isns_build_dev_attr_qry_packet failed\n",
+		    ha->host_no, __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	pdu_entry->SendBuffLen = packet_size;
+	pdu_entry->RecvBuffLen = pdu_entry->BuffLen;
+	DEBUG5(printk("---------------------------\n"));
+	DEBUG5(printk("scsi%ld: %s:                     sending  %d "
+	    "DevAttrQry\n", ha->host_no, __func__, ha->isns_transaction_id));
+	DEBUG5(printk("PDU (0x%p) 0x%x ->\n", pdu_entry->Buff,
+	    pdu_entry->SendBuffLen));
+	DEBUG5(qla4xxx_dump_bytes(pdu_entry->Buff, pdu_entry->SendBuffLen));
+	if (qla4xxx_send_passthru0_iocb(ha, ISNS_DEVICE_INDEX,
+	    ISNS_DEFAULT_SERVER_CONN_ID, pdu_entry->DmaBuff,
+	    pdu_entry->SendBuffLen, pdu_entry->RecvBuffLen, PT_FLAG_ISNS_PDU |
+	    PT_FLAG_WAIT_4_RESPONSE, qla4xxx_isns_build_iocb_handle(ha,
+		    ISNS_REQ_RSP_PDU, pdu_entry)) != QLA_SUCCESS) {
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	ha->isns_transaction_id++;
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_dev_attr_qry_rsp(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size)
+{
+	uint8_t *last_iscsi_name = NULL;
+	ISNS_DISCOVERED_TARGET *discovered_target = NULL;
+	uint32_t isns_error;
+	int i;
+	uint8_t bIsTarget = 1;
+	uint8_t bFound = 0;
+	int status = QLA_SUCCESS;
+
+	if (test_bit(ISNS_FLAG_SCN_RESTART, &ha->isns_flags)) {
+		clear_bit(ISNS_FLAG_SCN_RESTART, &ha->isns_flags);
+		ha->isns_num_discovered_targets = 0;
+		if (qla4xxx_isns_dev_get_next(ha, NULL) != QLA_SUCCESS) {
+			DEBUG5(printk("scsi%ld: %s: "
+			    "qla4xxx_isns_dev_get_next failed\n", ha->host_no,
+			    __func__));
+			goto exit_qry_rsp_clear_flags;
+		}
+		goto exit_qry_rsp;
+	}
+	last_iscsi_name = kmalloc(256, GFP_ATOMIC);
+	discovered_target = kmalloc(sizeof(*discovered_target), GFP_ATOMIC);
+	if (!last_iscsi_name || !discovered_target) {
+		DEBUG5(printk("scsi%ld: %s: failed to allocate "
+		    "memory\n", ha->host_no, __func__));
+		status = QLA_ERROR;
+		goto exit_qry_rsp;
+	}
+	memset(last_iscsi_name, 0, 256);
+	memset(discovered_target, 0, sizeof(ISNS_DISCOVERED_TARGET));
+	if (qla4xxx_isns_parse_query_response(ha, buffer, buffer_size,
+	    &isns_error, discovered_target, &bIsTarget, last_iscsi_name) ==
+	    QLA_SUCCESS) {
+		if (bIsTarget && discovered_target->NameString[0] &&
+		    discovered_target->NumPortals) {
+			for (i = 0; i < ha->isns_num_discovered_targets; i++) {
+				if (!strcmp(discovered_target->NameString,
+				    ha->isns_disc_tgt_databasev[i].
+				    NameString)) {
+					DEBUG5(printk("scsi%ld: %s: "
+					    "found at index %x\n", ha->host_no,
+					    __func__, i));
+					memcpy(&ha->isns_disc_tgt_databasev[i],
+					    discovered_target,
+					    sizeof(ISNS_DISCOVERED_TARGET));
+					ha->isns_disc_tgt_databasev[i] =
+					    *discovered_target;
+					bFound = 1;
+					break;
+				}
+			}
+			if (!bFound && i < MAX_ISNS_DISCOVERED_TARGETS) {
+				DEBUG5(printk("scsi%ld: %s: not "
+				    "already present, put in index %x\n",
+				    ha->host_no, __func__, i));
+				memcpy(&ha->isns_disc_tgt_databasev[i],
+				    discovered_target,
+				    sizeof(ISNS_DISCOVERED_TARGET));
+				ha->isns_num_discovered_targets++;
+			}
+		}
+	}
+	if (test_bit(ISNS_FLAG_QUERY_SINGLE_OBJECT, &ha->isns_flags))
+		goto exit_qry_rsp_clear_flags;
+	else if (last_iscsi_name[0] == 0)
+		goto exit_qry_rsp_clear_flags;
+	else {
+		if (qla4xxx_isns_dev_get_next(ha, last_iscsi_name) !=
+		    QLA_SUCCESS) {
+			DEBUG5(printk("scsi%ld: %s: "
+			    "qla4xxx_isns_dev_get_next failed\n", ha->host_no,
+			    __func__));
+			goto exit_qry_rsp_clear_flags;
+		}
+	}
+	goto exit_qry_rsp;
+exit_qry_rsp_clear_flags:
+	ISNS_CLEAR_FLAGS(ha);
+
+exit_qry_rsp:
+	if (last_iscsi_name)
+		kfree(last_iscsi_name);
+	if (discovered_target)
+		kfree(discovered_target);
+	return status;
+}
+
+int
+qla4xxx_isns_dev_get_next(scsi_qla_host_t *ha, uint8_t *last_iscsi_name)
+{
+	PDU_ENTRY *pdu_entry;
+	uint32_t packet_size;
+
+	if ((pdu_entry = qla4xxx_get_pdu(ha, PAGE_SIZE)) == NULL)
+		return QLA_ERROR;
+
+	if (qla4xxx_isns_build_dev_get_next_packet(ha, pdu_entry->Buff,
+	    pdu_entry->BuffLen, last_iscsi_name, &packet_size) !=
+	    QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  "
+		    "qla4xxx_isns_build_dev_get_next_packet failed\n",
+		    ha->host_no, __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	pdu_entry->SendBuffLen = packet_size;
+	pdu_entry->RecvBuffLen = pdu_entry->BuffLen;
+	DEBUG5(printk("---------------------------\n"));
+	DEBUG5(printk("scsi%ld: %s:                     sending  %d "
+	    "DevGetNext\n", ha->host_no, __func__, ha->isns_transaction_id));
+	DEBUG5(printk("PDU (0x%p) 0x%x ->\n", pdu_entry->Buff,
+	    pdu_entry->SendBuffLen));
+	DEBUG5(qla4xxx_dump_bytes(pdu_entry->Buff, pdu_entry->SendBuffLen));
+	if (qla4xxx_send_passthru0_iocb(ha, ISNS_DEVICE_INDEX,
+	    ISNS_DEFAULT_SERVER_CONN_ID, pdu_entry->DmaBuff,
+	    pdu_entry->SendBuffLen, pdu_entry->RecvBuffLen, PT_FLAG_ISNS_PDU |
+	    PT_FLAG_WAIT_4_RESPONSE, qla4xxx_isns_build_iocb_handle(ha,
+		    ISNS_REQ_RSP_PDU, pdu_entry)) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  "
+		    "qla4xxx_send_passthru0_iocb failed\n", ha->host_no,
+		    __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	ha->isns_transaction_id++;
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_dev_get_next_rsp(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size)
+{
+	uint32_t isns_error = 0;
+	uint8_t bIsTarget;
+	static uint8_t last_iscsi_name[256];
+
+	if (test_bit(ISNS_FLAG_SCN_RESTART, &ha->isns_flags)) {
+		clear_bit(ISNS_FLAG_SCN_RESTART, &ha->isns_flags);
+		ha->isns_num_discovered_targets = 0;
+		if (qla4xxx_isns_dev_get_next(ha, NULL) != QLA_SUCCESS) {
+			DEBUG5(printk("scsi%ld: %s: "
+			    "qla4xxx_isns_dev_get_next failed\n", ha->host_no,
+			    __func__));
+			goto exit_get_next_rsp;
+		}
+		return QLA_SUCCESS;
+	}
+	if (qla4xxx_isns_parse_get_next_response(ha, buffer, buffer_size,
+	    &isns_error, &last_iscsi_name[0], sizeof(last_iscsi_name) - 1,
+	    &bIsTarget) != QLA_SUCCESS) {
+		if (isns_error != ISNS_ERR_NO_SUCH_ENTRY) {
+			DEBUG5(printk("scsi%ld: %s: "
+			    "qla4xxx_isns_parse_get_next_response failed\n",
+			    ha->host_no, __func__));
+		}
+		goto exit_get_next_rsp;
+	}
+#if 1
+	if (bIsTarget) {
+		if (qla4xxx_isns_dev_attr_qry(ha, &last_iscsi_name[0]) !=
+		    QLA_SUCCESS) {
+			DEBUG5(printk("scsi%ld: %s: "
+			    "qla4xxx_isns_dev_attr_qry failed\n", ha->host_no,
+			    __func__));
+			goto exit_get_next_rsp;
+		}
+	} else {
+		if (qla4xxx_isns_dev_get_next(ha, &last_iscsi_name[0]) !=
+		    QLA_SUCCESS) {
+			DEBUG5(printk("scsi%ld: %s: "
+			    "qla4xxx_isns_dev_get_next failed\n", ha->host_no,
+			    __func__));
+			goto exit_get_next_rsp;
+		}
+	}
+#else
+	if (qla4xxx_isns_dev_attr_qry(ha, &last_iscsi_name[0]) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s: "
+		    "qla4xxx_isns_dev_attr_qry failed\n", ha->host_no,
+		    __func__));
+		goto exit_get_next_rsp;
+	}
+#endif
+	return QLA_SUCCESS;
+
+exit_get_next_rsp:
+	clear_bit(ISNS_FLAG_SCN_IN_PROGRESS, &ha->isns_flags);
+	clear_bit(ISNS_FLAG_SCN_RESTART, &ha->isns_flags);
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_dev_dereg(scsi_qla_host_t *ha)
+{
+	PDU_ENTRY *pdu_entry;
+	uint32_t packet_size;
+
+	if ((pdu_entry = qla4xxx_get_pdu(ha, PAGE_SIZE)) == NULL) {
+		DEBUG5(printk("scsi%ld: %s:  qla4xxx_get_pdu failed\n",
+		    ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+	if (qla4xxx_isns_build_deregistration_packet(ha, pdu_entry->Buff,
+	    pdu_entry->BuffLen, ha->isns_entity_id, ha->isns_ip_address,
+	    ha->isns_server_port_number, &packet_size) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  "
+		    "QLiSNSBuildDeregistrationPacket failed\n", ha->host_no,
+		    __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	pdu_entry->SendBuffLen = packet_size;
+	pdu_entry->RecvBuffLen = pdu_entry->BuffLen;
+	DEBUG5(printk("---------------------------\n"));
+	DEBUG5(printk("scsi%ld: %s:                       sending  "
+	    "%d DevDereg\n", ha->host_no, __func__, ha->isns_transaction_id));
+	DEBUG5(printk("PDU (0x%p) 0x%x ->\n", pdu_entry->Buff,
+	    pdu_entry->SendBuffLen));
+	DEBUG5(qla4xxx_dump_bytes(pdu_entry->Buff, pdu_entry->SendBuffLen));
+	if (qla4xxx_send_passthru0_iocb(ha, ISNS_DEVICE_INDEX,
+	    ISNS_DEFAULT_SERVER_CONN_ID, pdu_entry->DmaBuff,
+	    pdu_entry->SendBuffLen, pdu_entry->RecvBuffLen, PT_FLAG_ISNS_PDU |
+	    PT_FLAG_WAIT_4_RESPONSE, qla4xxx_isns_build_iocb_handle(ha,
+		    ISNS_REQ_RSP_PDU, pdu_entry)) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  "
+		    "qla4xxx_send_passthru0_iocb failed\n", ha->host_no,
+		    __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	ha->isns_transaction_id++;
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_dev_dereg_rsp(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size)
+{
+	ISNSP_MESSAGE_HEADER *isns_message;
+	ISNSP_RESPONSE_HEADER *isns_response;
+
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	isns_response = (ISNSP_RESPONSE_HEADER *) & isns_message->payload[0];
+	clear_bit(ISNS_FLAG_ISNS_SRV_REGISTERED, &ha->isns_flags);
+	if (be32_to_cpu(isns_response->error_code)) {
+		DEBUG5(printk("scsi%ld: %s: iSNS SCNDereg rsp code "
+		    "%x\n", ha->host_no, __func__,
+		    be32_to_cpu(isns_response->error_code)));
+	}
+	if (test_bit(ISNS_FLAG_REREGISTER, &ha->isns_flags)) {
+		clear_bit(ISNS_FLAG_REREGISTER, &ha->isns_flags);
+		if (qla4xxx_isns_dev_attr_reg(ha) != QLA_SUCCESS) {
+			DEBUG5(printk("scsi%ld: %s: "
+			    "qla4xxx_isns_dev_attr_reg failed\n", ha->host_no,
+			    __func__));
+			return QLA_ERROR;
+		}
+	}
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_scn_dereg(scsi_qla_host_t *ha)
+{
+	PDU_ENTRY *pdu_entry;
+	uint32_t packet_size;
+
+	if ((pdu_entry = qla4xxx_get_pdu(ha, PAGE_SIZE)) == NULL) {
+		DEBUG5(printk("scsi%ld: %s:  qla4xxx_get_pdu failed\n",
+		    ha->host_no, __func__));
+		return QLA_ERROR;
+	}
+	if (qla4xxx_isns_build_scn_deregistration_packet(ha, pdu_entry->Buff,
+	    pdu_entry->BuffLen, &packet_size) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  qla4xxx_isns_build_scn_"
+		    "deregistration_packet failed\n", ha->host_no, __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	pdu_entry->SendBuffLen = packet_size;
+	pdu_entry->RecvBuffLen = pdu_entry->BuffLen;
+	DEBUG5(printk("---------------------------\n"));
+	DEBUG5(printk("scsi%ld: %s:                       sending  "
+	    "%d SCNDereg\n", ha->host_no, __func__, ha->isns_transaction_id));
+	DEBUG5(printk("PDU (0x%p) 0x%x ->\n", pdu_entry->Buff,
+	    pdu_entry->SendBuffLen));
+	DEBUG5(qla4xxx_dump_bytes(pdu_entry->Buff, pdu_entry->SendBuffLen));
+	clear_bit(ISNS_FLAG_DEV_SCAN_DONE, &ha->isns_flags);
+
+	if (qla4xxx_send_passthru0_iocb(ha, ISNS_DEVICE_INDEX,
+	    ISNS_DEFAULT_SERVER_CONN_ID, pdu_entry->DmaBuff,
+	    pdu_entry->SendBuffLen, pdu_entry->RecvBuffLen, PT_FLAG_ISNS_PDU |
+	    PT_FLAG_WAIT_4_RESPONSE, qla4xxx_isns_build_iocb_handle(ha,
+		    ISNS_REQ_RSP_PDU, pdu_entry)) != QLA_SUCCESS) {
+		DEBUG5(printk("scsi%ld: %s:  "
+		    "qla4xxx_send_passthru0_iocb failed\n", ha->host_no,
+		    __func__));
+		qla4xxx_free_pdu(ha, pdu_entry);
+		return QLA_ERROR;
+	}
+	ha->isns_transaction_id++;
+	return QLA_SUCCESS;
+}
+
+int
+qla4xxx_isns_scn_dereg_rsp(scsi_qla_host_t *ha, uint8_t *buffer,
+    uint32_t buffer_size)
+{
+	ISNSP_MESSAGE_HEADER *isns_message;
+	ISNSP_RESPONSE_HEADER *isns_response;
+
+	isns_message = (ISNSP_MESSAGE_HEADER *) buffer;
+	isns_response = (ISNSP_RESPONSE_HEADER *) & isns_message->payload[0];
+	clear_bit(ISNS_FLAG_ISNS_SCN_REGISTERED, &ha->isns_flags);
+	if (be32_to_cpu(isns_response->error_code)) {
+		DEBUG5(printk("scsi%ld: %s: iSNS SCNDereg rsp code "
+		    "%x\n", ha->host_no, __func__,
+		    be32_to_cpu(isns_response->error_code)));
+	}
+	if (test_bit(ISNS_FLAG_REREGISTER, &ha->isns_flags)) {
+		if (qla4xxx_isns_dev_dereg(ha) != QLA_SUCCESS) {
+			DEBUG5(printk("scsi%ld: %s: QLiSNSDevDereg "
+			    "failed\n", ha->host_no, __func__));
+			return QLA_ERROR;
+		}
+	}
+	return QLA_SUCCESS;
+}