[SCSI] tcm_qla2xxx: Add >= 24xx series fabric module for target-core
authorNicholas Bellinger <nab@linux-iscsi.org>
Tue, 15 May 2012 18:34:29 +0000 (14:34 -0400)
committerJames Bottomley <JBottomley@Parallels.com>
Tue, 22 May 2012 10:49:20 +0000 (11:49 +0100)
This patch adds support for tcm_qla2xxx fabric module for target-core
using the new qla_target.c LLD logic.  This includes support for explict
NodeACLs via configfs using tcm_qla2xxx_setup_nacl_from_rport() from libfc
struct fc_host->rports, and demo-mode support for virtual LUN=0 access.

This patch also adds support for using tcm_qla2xxx_lport->lport_fcport_map
and ->lport_loopid_map of btree_head32 to track struct se_node_acl pointers
for individual 24-bit Port ID and 16-bit Loop ID values w/ qla_target_template
->find_sess_by_s_id() and ->find_sess_by_loop_id() used in a number of
locations into the primary I/O dispatch logic in qla_target.c LLD code.

The main piece for FC Nexus setup is in tcm_qla2xxx_check_initiator_node_acl(),
which calls tcm_qla2xxx_set_sess_by_[s_id,loop_id]() to setup our
lport->lport_fcport_map and lport_loopid_map pointers respectively, and
register the new nexus with TCM via __transport_register_session().

(nab: Add qla_tgt_mgmt_cmd usage with TARGET_SCF_ACK_KREF during TMRs +
      change tcm_qla2xxx_nacl->nport_id to u32 (DanC))
(danc: tcm_qla2xxx: checking for NULL instead of IS_ERR())
(roland: Fix up v3.5 breakage for removal of transport_do_task_sg_chain +
         Add hook so qla_target code can shutdown sessions)
(steveh: Convert FC address map from flat array to btree)
(randy: fix qla2xxx printk format warnings for size_t)
(joern: Make most of tcm_qla2xxx static + remove unnecessary
        workqueue_struct prototypes + use WWN_SIZE instead of hard-coded
        constants)

Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
drivers/scsi/qla2xxx/Kconfig
drivers/scsi/qla2xxx/Makefile
drivers/scsi/qla2xxx/tcm_qla2xxx.c [new file with mode: 0644]
drivers/scsi/qla2xxx/tcm_qla2xxx.h [new file with mode: 0644]

index 6208d562890d1cb3cfb3c85845dddf02086c4fb2..317a7fdc3b825064e4a5677f0a64bc5f3e43a8d6 100644 (file)
@@ -25,3 +25,12 @@ config SCSI_QLA_FC
        Firmware images can be retrieved from:
 
                ftp://ftp.qlogic.com/outgoing/linux/firmware/
+
+config TCM_QLA2XXX
+       tristate "TCM_QLA2XXX fabric module for Qlogic 2xxx series target mode HBAs"
+       depends on SCSI_QLA_FC && TARGET_CORE
+       select LIBFC
+       select BTREE
+       default n
+       ---help---
+       Say Y here to enable the TCM_QLA2XXX fabric module for Qlogic 2xxx series target mode HBAs
index 702931ff67dbc4324958b4f3df3212cec394bbdd..dce7d788cdc9c7999795dac0e9819e81943aa223 100644 (file)
@@ -3,3 +3,4 @@ qla2xxx-y := qla_os.o qla_init.o qla_mbx.o qla_iocb.o qla_isr.o qla_gs.o \
         qla_nx.o qla_target.o
 
 obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx.o
+obj-$(CONFIG_TCM_QLA2XXX) += tcm_qla2xxx.o
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
new file mode 100644 (file)
index 0000000..436598f
--- /dev/null
@@ -0,0 +1,1955 @@
+/*******************************************************************************
+ * This file contains tcm implementation using v4 configfs fabric infrastructure
+ * for QLogic target mode HBAs
+ *
+ * ?? Copyright 2010-2011 RisingTide Systems LLC.
+ *
+ * Licensed to the Linux Foundation under the General Public License (GPL)
+ * version 2.
+ *
+ * Author: Nicholas A. Bellinger <nab@risingtidesystems.com>
+ *
+ * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
+ * the TCM_FC / Open-FCoE.org fabric module.
+ *
+ * Copyright (c) 2010 Cisco Systems, Inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ ****************************************************************************/
+
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <generated/utsrelease.h>
+#include <linux/utsname.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/kthread.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/configfs.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <asm/unaligned.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_cmnd.h>
+#include <target/target_core_base.h>
+#include <target/target_core_fabric.h>
+#include <target/target_core_fabric_configfs.h>
+#include <target/target_core_configfs.h>
+#include <target/configfs_macros.h>
+
+#include "qla_def.h"
+#include "qla_target.h"
+#include "tcm_qla2xxx.h"
+
+struct workqueue_struct *tcm_qla2xxx_free_wq;
+struct workqueue_struct *tcm_qla2xxx_cmd_wq;
+
+static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
+{
+       return 1;
+}
+
+static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
+{
+       return 0;
+}
+
+/*
+ * Parse WWN.
+ * If strict, we require lower-case hex and colon separators to be sure
+ * the name is the same as what would be generated by ft_format_wwn()
+ * so the name and wwn are mapped one-to-one.
+ */
+static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
+{
+       const char *cp;
+       char c;
+       u32 nibble;
+       u32 byte = 0;
+       u32 pos = 0;
+       u32 err;
+
+       *wwn = 0;
+       for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
+               c = *cp;
+               if (c == '\n' && cp[1] == '\0')
+                       continue;
+               if (strict && pos++ == 2 && byte++ < 7) {
+                       pos = 0;
+                       if (c == ':')
+                               continue;
+                       err = 1;
+                       goto fail;
+               }
+               if (c == '\0') {
+                       err = 2;
+                       if (strict && byte != 8)
+                               goto fail;
+                       return cp - name;
+               }
+               err = 3;
+               if (isdigit(c))
+                       nibble = c - '0';
+               else if (isxdigit(c) && (islower(c) || !strict))
+                       nibble = tolower(c) - 'a' + 10;
+               else
+                       goto fail;
+               *wwn = (*wwn << 4) | nibble;
+       }
+       err = 4;
+fail:
+       pr_debug("err %u len %zu pos %u byte %u\n",
+                       err, cp - name, pos, byte);
+       return -1;
+}
+
+static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
+{
+       u8 b[8];
+
+       put_unaligned_be64(wwn, b);
+       return snprintf(buf, len,
+               "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
+               b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
+}
+
+static char *tcm_qla2xxx_get_fabric_name(void)
+{
+       return "qla2xxx";
+}
+
+/*
+ * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
+ */
+static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
+{
+       unsigned int i, j, value;
+       u8 wwn[8];
+
+       memset(wwn, 0, sizeof(wwn));
+
+       /* Validate and store the new name */
+       for (i = 0, j = 0; i < 16; i++) {
+               value = hex_to_bin(*ns++);
+               if (value >= 0)
+                       j = (j << 4) | value;
+               else
+                       return -EINVAL;
+
+               if (i % 2) {
+                       wwn[i/2] = j & 0xff;
+                       j = 0;
+               }
+       }
+
+       *nm = wwn_to_u64(wwn);
+       return 0;
+}
+
+/*
+ * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
+ * store_fc_host_vport_create()
+ */
+static int tcm_qla2xxx_npiv_parse_wwn(
+       const char *name,
+       size_t count,
+       u64 *wwpn,
+       u64 *wwnn)
+{
+       unsigned int cnt = count;
+       int rc;
+
+       *wwpn = 0;
+       *wwnn = 0;
+
+       /* count may include a LF at end of string */
+       if (name[cnt-1] == '\n')
+               cnt--;
+
+       /* validate we have enough characters for WWPN */
+       if ((cnt != (16+1+16)) || (name[16] != ':'))
+               return -EINVAL;
+
+       rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
+       if (rc != 0)
+               return rc;
+
+       rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
+       if (rc != 0)
+               return rc;
+
+       return 0;
+}
+
+static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len,
+                                       u64 wwpn, u64 wwnn)
+{
+       u8 b[8], b2[8];
+
+       put_unaligned_be64(wwpn, b);
+       put_unaligned_be64(wwnn, b2);
+       return snprintf(buf, len,
+               "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
+               "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
+               b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
+               b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
+}
+
+static char *tcm_qla2xxx_npiv_get_fabric_name(void)
+{
+       return "qla2xxx_npiv";
+}
+
+static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+       struct tcm_qla2xxx_lport *lport = tpg->lport;
+       u8 proto_id;
+
+       switch (lport->lport_proto_id) {
+       case SCSI_PROTOCOL_FCP:
+       default:
+               proto_id = fc_get_fabric_proto_ident(se_tpg);
+               break;
+       }
+
+       return proto_id;
+}
+
+static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+       struct tcm_qla2xxx_lport *lport = tpg->lport;
+
+       return &lport->lport_name[0];
+}
+
+static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+       struct tcm_qla2xxx_lport *lport = tpg->lport;
+
+       return &lport->lport_npiv_name[0];
+}
+
+static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+       return tpg->lport_tpgt;
+}
+
+static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
+{
+       return 1;
+}
+
+static u32 tcm_qla2xxx_get_pr_transport_id(
+       struct se_portal_group *se_tpg,
+       struct se_node_acl *se_nacl,
+       struct t10_pr_registration *pr_reg,
+       int *format_code,
+       unsigned char *buf)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+       struct tcm_qla2xxx_lport *lport = tpg->lport;
+       int ret = 0;
+
+       switch (lport->lport_proto_id) {
+       case SCSI_PROTOCOL_FCP:
+       default:
+               ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
+                                       format_code, buf);
+               break;
+       }
+
+       return ret;
+}
+
+static u32 tcm_qla2xxx_get_pr_transport_id_len(
+       struct se_portal_group *se_tpg,
+       struct se_node_acl *se_nacl,
+       struct t10_pr_registration *pr_reg,
+       int *format_code)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+       struct tcm_qla2xxx_lport *lport = tpg->lport;
+       int ret = 0;
+
+       switch (lport->lport_proto_id) {
+       case SCSI_PROTOCOL_FCP:
+       default:
+               ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
+                                       format_code);
+               break;
+       }
+
+       return ret;
+}
+
+static char *tcm_qla2xxx_parse_pr_out_transport_id(
+       struct se_portal_group *se_tpg,
+       const char *buf,
+       u32 *out_tid_len,
+       char **port_nexus_ptr)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+       struct tcm_qla2xxx_lport *lport = tpg->lport;
+       char *tid = NULL;
+
+       switch (lport->lport_proto_id) {
+       case SCSI_PROTOCOL_FCP:
+       default:
+               tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
+                                       port_nexus_ptr);
+               break;
+       }
+
+       return tid;
+}
+
+static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+
+       return QLA_TPG_ATTRIB(tpg)->generate_node_acls;
+}
+
+static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+
+       return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls;
+}
+
+static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+
+       return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect;
+}
+
+static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+
+       return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect;
+}
+
+static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
+       struct se_portal_group *se_tpg)
+{
+       struct tcm_qla2xxx_nacl *nacl;
+
+       nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
+       if (!nacl) {
+               pr_err("Unable to alocate struct tcm_qla2xxx_nacl\n");
+               return NULL;
+       }
+
+       return &nacl->se_node_acl;
+}
+
+static void tcm_qla2xxx_release_fabric_acl(
+       struct se_portal_group *se_tpg,
+       struct se_node_acl *se_nacl)
+{
+       struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
+                       struct tcm_qla2xxx_nacl, se_node_acl);
+       kfree(nacl);
+}
+
+static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                               struct tcm_qla2xxx_tpg, se_tpg);
+
+       return tpg->lport_tpgt;
+}
+
+static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
+{
+       struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
+                       struct qla_tgt_mgmt_cmd, free_work);
+
+       transport_generic_free_cmd(&mcmd->se_cmd, 0);
+}
+
+/*
+ * Called from qla_target_template->free_mcmd(), and will call
+ * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
+ * release callback.  qla_hw_data->hardware_lock is expected to be held
+ */
+static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
+{
+       INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
+       queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
+}
+
+static void tcm_qla2xxx_complete_free(struct work_struct *work)
+{
+       struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
+
+       transport_generic_free_cmd(&cmd->se_cmd, 0);
+}
+
+/*
+ * Called from qla_target_template->free_cmd(), and will call
+ * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
+ * release callback.  qla_hw_data->hardware_lock is expected to be held
+ */
+static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
+{
+       INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
+       queue_work(tcm_qla2xxx_free_wq, &cmd->work);
+}
+
+/*
+ * Called from struct target_core_fabric_ops->check_stop_free() context
+ */
+static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
+{
+       return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
+}
+
+/* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
+ * fabric descriptor @se_cmd command to release
+ */
+static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
+{
+       struct qla_tgt_cmd *cmd;
+
+       if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
+               struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
+                               struct qla_tgt_mgmt_cmd, se_cmd);
+               qlt_free_mcmd(mcmd);
+               return;
+       }
+
+       cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+       qlt_free_cmd(cmd);
+}
+
+static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
+{
+       struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
+       struct scsi_qla_host *vha;
+       unsigned long flags;
+
+       BUG_ON(!sess);
+       vha = sess->vha;
+
+       spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+       sess->tearing_down = 1;
+       target_splice_sess_cmd_list(se_sess);
+       spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+
+       return 1;
+}
+
+static void tcm_qla2xxx_close_session(struct se_session *se_sess)
+{
+       struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
+       struct scsi_qla_host *vha;
+       unsigned long flags;
+
+       BUG_ON(!sess);
+       vha = sess->vha;
+
+       spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+       qlt_unreg_sess(sess);
+       spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+}
+
+static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
+{
+       return 0;
+}
+
+/*
+ * The LIO target core uses DMA_TO_DEVICE to mean that data is going
+ * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
+ * that data is coming from the target (eg handling a READ).  However,
+ * this is just the opposite of what we have to tell the DMA mapping
+ * layer -- eg when handling a READ, the HBA will have to DMA the data
+ * out of memory so it can send it to the initiator, which means we
+ * need to use DMA_TO_DEVICE when we map the data.
+ */
+static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
+{
+       if (se_cmd->se_cmd_flags & SCF_BIDI)
+               return DMA_BIDIRECTIONAL;
+
+       switch (se_cmd->data_direction) {
+       case DMA_TO_DEVICE:
+               return DMA_FROM_DEVICE;
+       case DMA_FROM_DEVICE:
+               return DMA_TO_DEVICE;
+       case DMA_NONE:
+       default:
+               return DMA_NONE;
+       }
+}
+
+static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
+{
+       struct qla_tgt_cmd *cmd = container_of(se_cmd,
+                               struct qla_tgt_cmd, se_cmd);
+
+       cmd->bufflen = se_cmd->data_length;
+       cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
+
+       cmd->sg_cnt = se_cmd->t_data_nents;
+       cmd->sg = se_cmd->t_data_sg;
+
+       /*
+        * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
+        * the SGL mappings into PCIe memory for incoming FCP WRITE data.
+        */
+       return qlt_rdy_to_xfer(cmd);
+}
+
+static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
+{
+       unsigned long flags;
+       /*
+        * Check for WRITE_PENDING status to determine if we need to wait for
+        * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
+        */
+       spin_lock_irqsave(&se_cmd->t_state_lock, flags);
+       if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
+           se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
+               spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
+               wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
+                                               3000);
+               return 0;
+       }
+       spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
+
+       return 0;
+}
+
+static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
+{
+       return;
+}
+
+static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
+{
+       struct qla_tgt_cmd *cmd = container_of(se_cmd,
+                               struct qla_tgt_cmd, se_cmd);
+
+       return cmd->tag;
+}
+
+static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
+{
+       return 0;
+}
+
+/*
+ * Called from process context in qla_target.c:qlt_do_work() code
+ */
+static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
+       unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
+       int data_dir, int bidi)
+{
+       struct se_cmd *se_cmd = &cmd->se_cmd;
+       struct se_session *se_sess;
+       struct qla_tgt_sess *sess;
+       int flags = TARGET_SCF_ACK_KREF;
+
+       if (bidi)
+               flags |= TARGET_SCF_BIDI_OP;
+
+       sess = cmd->sess;
+       if (!sess) {
+               pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
+               return -EINVAL;
+       }
+
+       se_sess = sess->se_sess;
+       if (!se_sess) {
+               pr_err("Unable to locate active struct se_session\n");
+               return -EINVAL;
+       }
+
+       target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
+                               cmd->unpacked_lun, data_length, fcp_task_attr,
+                               data_dir, flags);
+       return 0;
+}
+
+static void tcm_qla2xxx_do_rsp(struct work_struct *work)
+{
+       struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
+       /*
+        * Dispatch ->queue_status from workqueue process context
+        */
+       transport_generic_request_failure(&cmd->se_cmd);
+}
+
+/*
+ * Called from qla_target.c:qlt_do_ctio_completion()
+ */
+static int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
+{
+       struct se_cmd *se_cmd = &cmd->se_cmd;
+       unsigned long flags;
+       /*
+        * Ensure that the complete FCP WRITE payload has been received.
+        * Otherwise return an exception via CHECK_CONDITION status.
+        */
+       if (!cmd->write_data_transferred) {
+               /*
+                * Check if se_cmd has already been aborted via LUN_RESET, and
+                * waiting upon completion in tcm_qla2xxx_write_pending_status()
+                */
+               spin_lock_irqsave(&se_cmd->t_state_lock, flags);
+               if (se_cmd->transport_state & CMD_T_ABORTED) {
+                       spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
+                       complete(&se_cmd->t_transport_stop_comp);
+                       return 0;
+               }
+               spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
+
+               se_cmd->scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
+               INIT_WORK(&cmd->work, tcm_qla2xxx_do_rsp);
+               queue_work(tcm_qla2xxx_free_wq, &cmd->work);
+               return 0;
+       }
+       /*
+        * We now tell TCM to queue this WRITE CDB with TRANSPORT_PROCESS_WRITE
+        * status to the backstore processing thread.
+        */
+       return transport_generic_handle_data(&cmd->se_cmd);
+}
+
+/*
+ * Called from qla_target.c:qlt_issue_task_mgmt()
+ */
+int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
+                       uint8_t tmr_func, uint32_t tag)
+{
+       struct qla_tgt_sess *sess = mcmd->sess;
+       struct se_cmd *se_cmd = &mcmd->se_cmd;
+
+       return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
+                       tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
+}
+
+static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
+{
+       struct qla_tgt_cmd *cmd = container_of(se_cmd,
+                               struct qla_tgt_cmd, se_cmd);
+
+       cmd->bufflen = se_cmd->data_length;
+       cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
+       cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
+
+       cmd->sg_cnt = se_cmd->t_data_nents;
+       cmd->sg = se_cmd->t_data_sg;
+       cmd->offset = 0;
+
+       /*
+        * Now queue completed DATA_IN the qla2xxx LLD and response ring
+        */
+       return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
+                               se_cmd->scsi_status);
+}
+
+static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
+{
+       struct qla_tgt_cmd *cmd = container_of(se_cmd,
+                               struct qla_tgt_cmd, se_cmd);
+       int xmit_type = QLA_TGT_XMIT_STATUS;
+
+       cmd->bufflen = se_cmd->data_length;
+       cmd->sg = NULL;
+       cmd->sg_cnt = 0;
+       cmd->offset = 0;
+       cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
+       cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
+
+       if (se_cmd->data_direction == DMA_FROM_DEVICE) {
+               /*
+                * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
+                * for qla_tgt_xmit_response LLD code
+                */
+               se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
+               se_cmd->residual_count = se_cmd->data_length;
+
+               cmd->bufflen = 0;
+       }
+       /*
+        * Now queue status response to qla2xxx LLD code and response ring
+        */
+       return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
+}
+
+static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
+{
+       struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
+       struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
+                               struct qla_tgt_mgmt_cmd, se_cmd);
+
+       pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
+                       mcmd, se_tmr->function, se_tmr->response);
+       /*
+        * Do translation between TCM TM response codes and
+        * QLA2xxx FC TM response codes.
+        */
+       switch (se_tmr->response) {
+       case TMR_FUNCTION_COMPLETE:
+               mcmd->fc_tm_rsp = FC_TM_SUCCESS;
+               break;
+       case TMR_TASK_DOES_NOT_EXIST:
+               mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
+               break;
+       case TMR_FUNCTION_REJECTED:
+               mcmd->fc_tm_rsp = FC_TM_REJECT;
+               break;
+       case TMR_LUN_DOES_NOT_EXIST:
+       default:
+               mcmd->fc_tm_rsp = FC_TM_FAILED;
+               break;
+       }
+       /*
+        * Queue the TM response to QLA2xxx LLD to build a
+        * CTIO response packet.
+        */
+       qlt_xmit_tm_rsp(mcmd);
+
+       return 0;
+}
+
+static u16 tcm_qla2xxx_get_fabric_sense_len(void)
+{
+       return 0;
+}
+
+static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd,
+                                       u32 sense_length)
+{
+       return 0;
+}
+
+/* Local pointer to allocated TCM configfs fabric module */
+struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
+struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
+
+static int tcm_qla2xxx_setup_nacl_from_rport(
+       struct se_portal_group *se_tpg,
+       struct se_node_acl *se_nacl,
+       struct tcm_qla2xxx_lport *lport,
+       struct tcm_qla2xxx_nacl *nacl,
+       u64 rport_wwnn)
+{
+       struct scsi_qla_host *vha = lport->qla_vha;
+       struct Scsi_Host *sh = vha->host;
+       struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
+       struct fc_rport *rport;
+       unsigned long flags;
+       void *node;
+       int rc;
+
+       /*
+        * Scan the existing rports, and create a session for the
+        * explict NodeACL is an matching rport->node_name already
+        * exists.
+        */
+       spin_lock_irqsave(sh->host_lock, flags);
+       list_for_each_entry(rport, &fc_host->rports, peers) {
+               if (rport_wwnn != rport->node_name)
+                       continue;
+
+               pr_debug("Located existing rport_wwpn and rport->node_name: 0x%016LX, port_id: 0x%04x\n",
+                   rport->node_name, rport->port_id);
+               nacl->nport_id = rport->port_id;
+
+               spin_unlock_irqrestore(sh->host_lock, flags);
+
+               spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+               node = btree_lookup32(&lport->lport_fcport_map, rport->port_id);
+               if (node) {
+                       rc = btree_update32(&lport->lport_fcport_map,
+                                           rport->port_id, se_nacl);
+               } else {
+                       rc = btree_insert32(&lport->lport_fcport_map,
+                                           rport->port_id, se_nacl,
+                                           GFP_ATOMIC);
+               }
+               spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+
+               if (rc) {
+                       pr_err("Unable to insert se_nacl into fcport_map");
+                       WARN_ON(rc > 0);
+                       return rc;
+               }
+
+               pr_debug("Inserted into fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%08x\n",
+                   se_nacl, rport_wwnn, nacl->nport_id);
+
+               return 1;
+       }
+       spin_unlock_irqrestore(sh->host_lock, flags);
+
+       return 0;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
+{
+       struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
+       struct se_portal_group *se_tpg = se_nacl->se_tpg;
+       struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+       struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+                               struct tcm_qla2xxx_lport, lport_wwn);
+       struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
+                               struct tcm_qla2xxx_nacl, se_node_acl);
+       void *node;
+
+       pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
+
+       node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
+       WARN_ON(node && (node != se_nacl));
+
+       pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
+           se_nacl, nacl->nport_wwnn, nacl->nport_id);
+}
+
+static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
+{
+       target_put_session(sess->se_sess);
+}
+
+static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
+{
+       tcm_qla2xxx_shutdown_session(sess->se_sess);
+}
+
+static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
+       struct se_portal_group *se_tpg,
+       struct config_group *group,
+       const char *name)
+{
+       struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+       struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+                               struct tcm_qla2xxx_lport, lport_wwn);
+       struct se_node_acl *se_nacl, *se_nacl_new;
+       struct tcm_qla2xxx_nacl *nacl;
+       u64 wwnn;
+       u32 qla2xxx_nexus_depth;
+       int rc;
+
+       if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
+               return ERR_PTR(-EINVAL);
+
+       se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
+       if (!se_nacl_new)
+               return ERR_PTR(-ENOMEM);
+/* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
+       qla2xxx_nexus_depth = 1;
+
+       /*
+        * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
+        * when converting a NodeACL from demo mode -> explict
+        */
+       se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
+                               name, qla2xxx_nexus_depth);
+       if (IS_ERR(se_nacl)) {
+               tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
+               return se_nacl;
+       }
+       /*
+        * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
+        */
+       nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+       nacl->nport_wwnn = wwnn;
+       tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
+       /*
+        * Setup a se_nacl handle based on an a matching struct fc_rport setup
+        * via drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
+        */
+       rc = tcm_qla2xxx_setup_nacl_from_rport(se_tpg, se_nacl, lport,
+                                       nacl, wwnn);
+       if (rc < 0) {
+               tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
+               return ERR_PTR(rc);
+       }
+
+       return se_nacl;
+}
+
+static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
+{
+       struct se_portal_group *se_tpg = se_acl->se_tpg;
+       struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
+                               struct tcm_qla2xxx_nacl, se_node_acl);
+
+       core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
+       kfree(nacl);
+}
+
+/* Start items for tcm_qla2xxx_tpg_attrib_cit */
+
+#define DEF_QLA_TPG_ATTRIB(name)                                       \
+                                                                       \
+static ssize_t tcm_qla2xxx_tpg_attrib_show_##name(                     \
+       struct se_portal_group *se_tpg,                                 \
+       char *page)                                                     \
+{                                                                      \
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
+                       struct tcm_qla2xxx_tpg, se_tpg);                \
+                                                                       \
+       return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name);        \
+}                                                                      \
+                                                                       \
+static ssize_t tcm_qla2xxx_tpg_attrib_store_##name(                    \
+       struct se_portal_group *se_tpg,                                 \
+       const char *page,                                               \
+       size_t count)                                                   \
+{                                                                      \
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
+                       struct tcm_qla2xxx_tpg, se_tpg);                \
+       unsigned long val;                                              \
+       int ret;                                                        \
+                                                                       \
+       ret = kstrtoul(page, 0, &val);                                  \
+       if (ret < 0) {                                                  \
+               pr_err("kstrtoul() failed with"                         \
+                               " ret: %d\n", ret);                     \
+               return -EINVAL;                                         \
+       }                                                               \
+       ret = tcm_qla2xxx_set_attrib_##name(tpg, val);                  \
+                                                                       \
+       return (!ret) ? count : -EINVAL;                                \
+}
+
+#define DEF_QLA_TPG_ATTR_BOOL(_name)                                   \
+                                                                       \
+static int tcm_qla2xxx_set_attrib_##_name(                             \
+       struct tcm_qla2xxx_tpg *tpg,                                    \
+       unsigned long val)                                              \
+{                                                                      \
+       struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;            \
+                                                                       \
+       if ((val != 0) && (val != 1)) {                                 \
+               pr_err("Illegal boolean value %lu\n", val);             \
+               return -EINVAL;                                         \
+       }                                                               \
+                                                                       \
+       a->_name = val;                                                 \
+       return 0;                                                       \
+}
+
+#define QLA_TPG_ATTR(_name, _mode) \
+       TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
+
+/*
+ * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
+ */
+DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
+DEF_QLA_TPG_ATTRIB(generate_node_acls);
+QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
+
+/*
+ Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
+ */
+DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
+DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
+QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
+
+/*
+ * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
+ */
+DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
+DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
+QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
+
+/*
+ * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
+ */
+DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
+DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
+QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
+
+static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
+       &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
+       &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
+       &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
+       &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
+       NULL,
+};
+
+/* End items for tcm_qla2xxx_tpg_attrib_cit */
+
+static ssize_t tcm_qla2xxx_tpg_show_enable(
+       struct se_portal_group *se_tpg,
+       char *page)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                       struct tcm_qla2xxx_tpg, se_tpg);
+
+       return snprintf(page, PAGE_SIZE, "%d\n",
+                       atomic_read(&tpg->lport_tpg_enabled));
+}
+
+static ssize_t tcm_qla2xxx_tpg_store_enable(
+       struct se_portal_group *se_tpg,
+       const char *page,
+       size_t count)
+{
+       struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+       struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+                       struct tcm_qla2xxx_lport, lport_wwn);
+       struct scsi_qla_host *vha = lport->qla_vha;
+       struct qla_hw_data *ha = vha->hw;
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                       struct tcm_qla2xxx_tpg, se_tpg);
+       unsigned long op;
+       int rc;
+
+       rc = kstrtoul(page, 0, &op);
+       if (rc < 0) {
+               pr_err("kstrtoul() returned %d\n", rc);
+               return -EINVAL;
+       }
+       if ((op != 1) && (op != 0)) {
+               pr_err("Illegal value for tpg_enable: %lu\n", op);
+               return -EINVAL;
+       }
+
+       if (op) {
+               atomic_set(&tpg->lport_tpg_enabled, 1);
+               qlt_enable_vha(vha);
+       } else {
+               if (!ha->tgt.qla_tgt) {
+                       pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
+                       return -ENODEV;
+               }
+               atomic_set(&tpg->lport_tpg_enabled, 0);
+               qlt_stop_phase1(ha->tgt.qla_tgt);
+       }
+
+       return count;
+}
+
+TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
+
+static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
+       &tcm_qla2xxx_tpg_enable.attr,
+       NULL,
+};
+
+static struct se_portal_group *tcm_qla2xxx_make_tpg(
+       struct se_wwn *wwn,
+       struct config_group *group,
+       const char *name)
+{
+       struct tcm_qla2xxx_lport *lport = container_of(wwn,
+                       struct tcm_qla2xxx_lport, lport_wwn);
+       struct tcm_qla2xxx_tpg *tpg;
+       unsigned long tpgt;
+       int ret;
+
+       if (strstr(name, "tpgt_") != name)
+               return ERR_PTR(-EINVAL);
+       if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
+               return ERR_PTR(-EINVAL);
+
+       if (!lport->qla_npiv_vp && (tpgt != 1)) {
+               pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
+               return ERR_PTR(-ENOSYS);
+       }
+
+       tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
+       if (!tpg) {
+               pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
+               return ERR_PTR(-ENOMEM);
+       }
+       tpg->lport = lport;
+       tpg->lport_tpgt = tpgt;
+       /*
+        * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
+        * NodeACLs
+        */
+       QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
+       QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
+       QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
+
+       ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
+                               &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
+       if (ret < 0) {
+               kfree(tpg);
+               return NULL;
+       }
+       /*
+        * Setup local TPG=1 pointer for non NPIV mode.
+        */
+       if (lport->qla_npiv_vp == NULL)
+               lport->tpg_1 = tpg;
+
+       return &tpg->se_tpg;
+}
+
+static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
+{
+       struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+                       struct tcm_qla2xxx_tpg, se_tpg);
+       struct tcm_qla2xxx_lport *lport = tpg->lport;
+       struct scsi_qla_host *vha = lport->qla_vha;
+       struct qla_hw_data *ha = vha->hw;
+       /*
+        * Call into qla2x_target.c LLD logic to shutdown the active
+        * FC Nexuses and disable target mode operation for this qla_hw_data
+        */
+       if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
+               qlt_stop_phase1(ha->tgt.qla_tgt);
+
+       core_tpg_deregister(se_tpg);
+       /*
+        * Clear local TPG=1 pointer for non NPIV mode.
+        */
+       if (lport->qla_npiv_vp == NULL)
+               lport->tpg_1 = NULL;
+
+       kfree(tpg);
+}
+
+static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
+       struct se_wwn *wwn,
+       struct config_group *group,
+       const char *name)
+{
+       struct tcm_qla2xxx_lport *lport = container_of(wwn,
+                       struct tcm_qla2xxx_lport, lport_wwn);
+       struct tcm_qla2xxx_tpg *tpg;
+       unsigned long tpgt;
+       int ret;
+
+       if (strstr(name, "tpgt_") != name)
+               return ERR_PTR(-EINVAL);
+       if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
+               return ERR_PTR(-EINVAL);
+
+       tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
+       if (!tpg) {
+               pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
+               return ERR_PTR(-ENOMEM);
+       }
+       tpg->lport = lport;
+       tpg->lport_tpgt = tpgt;
+
+       ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
+                               &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
+       if (ret < 0) {
+               kfree(tpg);
+               return NULL;
+       }
+       return &tpg->se_tpg;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
+       scsi_qla_host_t *vha,
+       const uint8_t *s_id)
+{
+       struct qla_hw_data *ha = vha->hw;
+       struct tcm_qla2xxx_lport *lport;
+       struct se_node_acl *se_nacl;
+       struct tcm_qla2xxx_nacl *nacl;
+       u32 key;
+
+       lport = ha->tgt.target_lport_ptr;
+       if (!lport) {
+               pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+               dump_stack();
+               return NULL;
+       }
+
+       key = (((unsigned long)s_id[0] << 16) |
+              ((unsigned long)s_id[1] << 8) |
+              (unsigned long)s_id[2]);
+       pr_debug("find_sess_by_s_id: 0x%06x\n", key);
+
+       se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
+       if (!se_nacl) {
+               pr_debug("Unable to locate s_id: 0x%06x\n", key);
+               return NULL;
+       }
+       pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
+           se_nacl, se_nacl->initiatorname);
+
+       nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+       if (!nacl->qla_tgt_sess) {
+               pr_err("Unable to locate struct qla_tgt_sess\n");
+               return NULL;
+       }
+
+       return nacl->qla_tgt_sess;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static void tcm_qla2xxx_set_sess_by_s_id(
+       struct tcm_qla2xxx_lport *lport,
+       struct se_node_acl *new_se_nacl,
+       struct tcm_qla2xxx_nacl *nacl,
+       struct se_session *se_sess,
+       struct qla_tgt_sess *qla_tgt_sess,
+       uint8_t *s_id)
+{
+       u32 key;
+       void *slot;
+       int rc;
+
+       key = (((unsigned long)s_id[0] << 16) |
+              ((unsigned long)s_id[1] << 8) |
+              (unsigned long)s_id[2]);
+       pr_debug("set_sess_by_s_id: %06x\n", key);
+
+       slot = btree_lookup32(&lport->lport_fcport_map, key);
+       if (!slot) {
+               if (new_se_nacl) {
+                       pr_debug("Setting up new fc_port entry to new_se_nacl\n");
+                       nacl->nport_id = key;
+                       rc = btree_insert32(&lport->lport_fcport_map, key,
+                                       new_se_nacl, GFP_ATOMIC);
+                       if (rc)
+                               printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
+                                   (int)key);
+               } else {
+                       pr_debug("Wiping nonexisting fc_port entry\n");
+               }
+
+               qla_tgt_sess->se_sess = se_sess;
+               nacl->qla_tgt_sess = qla_tgt_sess;
+               return;
+       }
+
+       if (nacl->qla_tgt_sess) {
+               if (new_se_nacl == NULL) {
+                       pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
+                       btree_remove32(&lport->lport_fcport_map, key);
+                       nacl->qla_tgt_sess = NULL;
+                       return;
+               }
+               pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
+               btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
+               qla_tgt_sess->se_sess = se_sess;
+               nacl->qla_tgt_sess = qla_tgt_sess;
+               return;
+       }
+
+       if (new_se_nacl == NULL) {
+               pr_debug("Clearing existing fc_port entry\n");
+               btree_remove32(&lport->lport_fcport_map, key);
+               return;
+       }
+
+       pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
+       btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
+       qla_tgt_sess->se_sess = se_sess;
+       nacl->qla_tgt_sess = qla_tgt_sess;
+
+       pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
+           nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
+       scsi_qla_host_t *vha,
+       const uint16_t loop_id)
+{
+       struct qla_hw_data *ha = vha->hw;
+       struct tcm_qla2xxx_lport *lport;
+       struct se_node_acl *se_nacl;
+       struct tcm_qla2xxx_nacl *nacl;
+       struct tcm_qla2xxx_fc_loopid *fc_loopid;
+
+       lport = ha->tgt.target_lport_ptr;
+       if (!lport) {
+               pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+               dump_stack();
+               return NULL;
+       }
+
+       pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
+
+       fc_loopid = lport->lport_loopid_map + loop_id;
+       se_nacl = fc_loopid->se_nacl;
+       if (!se_nacl) {
+               pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
+                   loop_id);
+               return NULL;
+       }
+
+       nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+
+       if (!nacl->qla_tgt_sess) {
+               pr_err("Unable to locate struct qla_tgt_sess\n");
+               return NULL;
+       }
+
+       return nacl->qla_tgt_sess;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static void tcm_qla2xxx_set_sess_by_loop_id(
+       struct tcm_qla2xxx_lport *lport,
+       struct se_node_acl *new_se_nacl,
+       struct tcm_qla2xxx_nacl *nacl,
+       struct se_session *se_sess,
+       struct qla_tgt_sess *qla_tgt_sess,
+       uint16_t loop_id)
+{
+       struct se_node_acl *saved_nacl;
+       struct tcm_qla2xxx_fc_loopid *fc_loopid;
+
+       pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
+
+       fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
+                       lport->lport_loopid_map)[loop_id];
+
+       saved_nacl = fc_loopid->se_nacl;
+       if (!saved_nacl) {
+               pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
+               fc_loopid->se_nacl = new_se_nacl;
+               if (qla_tgt_sess->se_sess != se_sess)
+                       qla_tgt_sess->se_sess = se_sess;
+               if (nacl->qla_tgt_sess != qla_tgt_sess)
+                       nacl->qla_tgt_sess = qla_tgt_sess;
+               return;
+       }
+
+       if (nacl->qla_tgt_sess) {
+               if (new_se_nacl == NULL) {
+                       pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
+                       fc_loopid->se_nacl = NULL;
+                       nacl->qla_tgt_sess = NULL;
+                       return;
+               }
+
+               pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
+               fc_loopid->se_nacl = new_se_nacl;
+               if (qla_tgt_sess->se_sess != se_sess)
+                       qla_tgt_sess->se_sess = se_sess;
+               if (nacl->qla_tgt_sess != qla_tgt_sess)
+                       nacl->qla_tgt_sess = qla_tgt_sess;
+               return;
+       }
+
+       if (new_se_nacl == NULL) {
+               pr_debug("Clearing fc_loopid->se_nacl\n");
+               fc_loopid->se_nacl = NULL;
+               return;
+       }
+
+       pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
+       fc_loopid->se_nacl = new_se_nacl;
+       if (qla_tgt_sess->se_sess != se_sess)
+               qla_tgt_sess->se_sess = se_sess;
+       if (nacl->qla_tgt_sess != qla_tgt_sess)
+               nacl->qla_tgt_sess = qla_tgt_sess;
+
+       pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
+           nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
+}
+
+static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
+{
+       struct qla_tgt *tgt = sess->tgt;
+       struct qla_hw_data *ha = tgt->ha;
+       struct se_session *se_sess;
+       struct se_node_acl *se_nacl;
+       struct tcm_qla2xxx_lport *lport;
+       struct tcm_qla2xxx_nacl *nacl;
+       unsigned char be_sid[3];
+       unsigned long flags;
+
+       BUG_ON(in_interrupt());
+
+       se_sess = sess->se_sess;
+       if (!se_sess) {
+               pr_err("struct qla_tgt_sess->se_sess is NULL\n");
+               dump_stack();
+               return;
+       }
+       se_nacl = se_sess->se_node_acl;
+       nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+
+       lport = ha->tgt.target_lport_ptr;
+       if (!lport) {
+               pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+               dump_stack();
+               return;
+       }
+       target_wait_for_sess_cmds(se_sess, 0);
+       /*
+        * And now clear the se_nacl and session pointers from our HW lport
+        * mappings for fabric S_ID and LOOP_ID.
+        */
+       memset(&be_sid, 0, 3);
+       be_sid[0] = sess->s_id.b.domain;
+       be_sid[1] = sess->s_id.b.area;
+       be_sid[2] = sess->s_id.b.al_pa;
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
+                       sess, be_sid);
+       tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
+                       sess, sess->loop_id);
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       transport_deregister_session_configfs(sess->se_sess);
+       transport_deregister_session(sess->se_sess);
+}
+
+/*
+ * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
+ * to locate struct se_node_acl
+ */
+static int tcm_qla2xxx_check_initiator_node_acl(
+       scsi_qla_host_t *vha,
+       unsigned char *fc_wwpn,
+       void *qla_tgt_sess,
+       uint8_t *s_id,
+       uint16_t loop_id)
+{
+       struct qla_hw_data *ha = vha->hw;
+       struct tcm_qla2xxx_lport *lport;
+       struct tcm_qla2xxx_tpg *tpg;
+       struct tcm_qla2xxx_nacl *nacl;
+       struct se_portal_group *se_tpg;
+       struct se_node_acl *se_nacl;
+       struct se_session *se_sess;
+       struct qla_tgt_sess *sess = qla_tgt_sess;
+       unsigned char port_name[36];
+       unsigned long flags;
+
+       lport = ha->tgt.target_lport_ptr;
+       if (!lport) {
+               pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+               dump_stack();
+               return -EINVAL;
+       }
+       /*
+        * Locate the TPG=1 reference..
+        */
+       tpg = lport->tpg_1;
+       if (!tpg) {
+               pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
+               return -EINVAL;
+       }
+       se_tpg = &tpg->se_tpg;
+
+       se_sess = transport_init_session();
+       if (IS_ERR(se_sess)) {
+               pr_err("Unable to initialize struct se_session\n");
+               return PTR_ERR(se_sess);
+       }
+       /*
+        * Format the FCP Initiator port_name into colon seperated values to
+        * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
+        */
+       memset(&port_name, 0, 36);
+       snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
+               fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
+               fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
+       /*
+        * Locate our struct se_node_acl either from an explict NodeACL created
+        * via ConfigFS, or via running in TPG demo mode.
+        */
+       se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
+                                       port_name);
+       if (!se_sess->se_node_acl) {
+               transport_free_session(se_sess);
+               return -EINVAL;
+       }
+       se_nacl = se_sess->se_node_acl;
+       nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+       /*
+        * And now setup the new se_nacl and session pointers into our HW lport
+        * mappings for fabric S_ID and LOOP_ID.
+        */
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
+                       qla_tgt_sess, s_id);
+       tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
+                       qla_tgt_sess, loop_id);
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+       /*
+        * Finally register the new FC Nexus with TCM
+        */
+       __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
+
+       return 0;
+}
+
+/*
+ * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
+ */
+static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
+       .handle_cmd             = tcm_qla2xxx_handle_cmd,
+       .handle_data            = tcm_qla2xxx_handle_data,
+       .handle_tmr             = tcm_qla2xxx_handle_tmr,
+       .free_cmd               = tcm_qla2xxx_free_cmd,
+       .free_mcmd              = tcm_qla2xxx_free_mcmd,
+       .free_session           = tcm_qla2xxx_free_session,
+       .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
+       .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
+       .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
+       .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
+       .put_sess               = tcm_qla2xxx_put_sess,
+       .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
+};
+
+static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
+{
+       int rc;
+
+       rc = btree_init32(&lport->lport_fcport_map);
+       if (rc) {
+               pr_err("Unable to initialize lport->lport_fcport_map btree\n");
+               return rc;
+       }
+
+       lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
+                               65536);
+       if (!lport->lport_loopid_map) {
+               pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
+                   sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
+               btree_destroy32(&lport->lport_fcport_map);
+               return -ENOMEM;
+       }
+       memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
+              * 65536);
+       pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
+              sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
+       return 0;
+}
+
+static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
+{
+       struct qla_hw_data *ha = vha->hw;
+       struct tcm_qla2xxx_lport *lport;
+       /*
+        * Setup local pointer to vha, NPIV VP pointer (if present) and
+        * vha->tcm_lport pointer
+        */
+       lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
+       lport->qla_vha = vha;
+
+       return 0;
+}
+
+static struct se_wwn *tcm_qla2xxx_make_lport(
+       struct target_fabric_configfs *tf,
+       struct config_group *group,
+       const char *name)
+{
+       struct tcm_qla2xxx_lport *lport;
+       u64 wwpn;
+       int ret = -ENODEV;
+
+       if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
+               return ERR_PTR(-EINVAL);
+
+       lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
+       if (!lport) {
+               pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
+               return ERR_PTR(-ENOMEM);
+       }
+       lport->lport_wwpn = wwpn;
+       tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
+                               wwpn);
+
+       ret = tcm_qla2xxx_init_lport(lport);
+       if (ret != 0)
+               goto out;
+
+       ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
+                               tcm_qla2xxx_lport_register_cb, lport);
+       if (ret != 0)
+               goto out_lport;
+
+       return &lport->lport_wwn;
+out_lport:
+       vfree(lport->lport_loopid_map);
+       btree_destroy32(&lport->lport_fcport_map);
+out:
+       kfree(lport);
+       return ERR_PTR(ret);
+}
+
+static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
+{
+       struct tcm_qla2xxx_lport *lport = container_of(wwn,
+                       struct tcm_qla2xxx_lport, lport_wwn);
+       struct scsi_qla_host *vha = lport->qla_vha;
+       struct qla_hw_data *ha = vha->hw;
+       struct se_node_acl *node;
+       u32 key = 0;
+
+       /*
+        * Call into qla2x_target.c LLD logic to complete the
+        * shutdown of struct qla_tgt after the call to
+        * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
+        */
+       if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
+               qlt_stop_phase2(ha->tgt.qla_tgt);
+
+       qlt_lport_deregister(vha);
+
+       vfree(lport->lport_loopid_map);
+       btree_for_each_safe32(&lport->lport_fcport_map, key, node)
+               btree_remove32(&lport->lport_fcport_map, key);
+       btree_destroy32(&lport->lport_fcport_map);
+       kfree(lport);
+}
+
+static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
+       struct target_fabric_configfs *tf,
+       struct config_group *group,
+       const char *name)
+{
+       struct tcm_qla2xxx_lport *lport;
+       u64 npiv_wwpn, npiv_wwnn;
+       int ret;
+
+       if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
+                               &npiv_wwpn, &npiv_wwnn) < 0)
+               return ERR_PTR(-EINVAL);
+
+       lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
+       if (!lport) {
+               pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
+               return ERR_PTR(-ENOMEM);
+       }
+       lport->lport_npiv_wwpn = npiv_wwpn;
+       lport->lport_npiv_wwnn = npiv_wwnn;
+       tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
+                       TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
+
+/* FIXME: tcm_qla2xxx_npiv_make_lport */
+       ret = -ENOSYS;
+       if (ret != 0)
+               goto out;
+
+       return &lport->lport_wwn;
+out:
+       kfree(lport);
+       return ERR_PTR(ret);
+}
+
+static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
+{
+       struct tcm_qla2xxx_lport *lport = container_of(wwn,
+                       struct tcm_qla2xxx_lport, lport_wwn);
+       struct scsi_qla_host *vha = lport->qla_vha;
+       struct Scsi_Host *sh = vha->host;
+       /*
+        * Notify libfc that we want to release the lport->npiv_vport
+        */
+       fc_vport_terminate(lport->npiv_vport);
+
+       scsi_host_put(sh);
+       kfree(lport);
+}
+
+
+static ssize_t tcm_qla2xxx_wwn_show_attr_version(
+       struct target_fabric_configfs *tf,
+       char *page)
+{
+       return sprintf(page,
+           "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
+           UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
+           utsname()->machine);
+}
+
+TF_WWN_ATTR_RO(tcm_qla2xxx, version);
+
+static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
+       &tcm_qla2xxx_wwn_version.attr,
+       NULL,
+};
+
+static struct target_core_fabric_ops tcm_qla2xxx_ops = {
+       .get_fabric_name                = tcm_qla2xxx_get_fabric_name,
+       .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
+       .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
+       .tpg_get_tag                    = tcm_qla2xxx_get_tag,
+       .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
+       .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
+       .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
+       .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
+       .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
+       .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
+       .tpg_check_demo_mode_write_protect =
+                                       tcm_qla2xxx_check_demo_write_protect,
+       .tpg_check_prod_mode_write_protect =
+                                       tcm_qla2xxx_check_prod_write_protect,
+       .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
+       .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
+       .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
+       .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
+       .new_cmd_map                    = NULL,
+       .check_stop_free                = tcm_qla2xxx_check_stop_free,
+       .release_cmd                    = tcm_qla2xxx_release_cmd,
+       .shutdown_session               = tcm_qla2xxx_shutdown_session,
+       .close_session                  = tcm_qla2xxx_close_session,
+       .sess_get_index                 = tcm_qla2xxx_sess_get_index,
+       .sess_get_initiator_sid         = NULL,
+       .write_pending                  = tcm_qla2xxx_write_pending,
+       .write_pending_status           = tcm_qla2xxx_write_pending_status,
+       .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
+       .get_task_tag                   = tcm_qla2xxx_get_task_tag,
+       .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
+       .queue_data_in                  = tcm_qla2xxx_queue_data_in,
+       .queue_status                   = tcm_qla2xxx_queue_status,
+       .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
+       .get_fabric_sense_len           = tcm_qla2xxx_get_fabric_sense_len,
+       .set_fabric_sense_len           = tcm_qla2xxx_set_fabric_sense_len,
+       /*
+        * Setup function pointers for generic logic in
+        * target_core_fabric_configfs.c
+        */
+       .fabric_make_wwn                = tcm_qla2xxx_make_lport,
+       .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
+       .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
+       .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
+       .fabric_post_link               = NULL,
+       .fabric_pre_unlink              = NULL,
+       .fabric_make_np                 = NULL,
+       .fabric_drop_np                 = NULL,
+       .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
+       .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
+};
+
+static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
+       .get_fabric_name                = tcm_qla2xxx_npiv_get_fabric_name,
+       .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
+       .tpg_get_wwn                    = tcm_qla2xxx_npiv_get_fabric_wwn,
+       .tpg_get_tag                    = tcm_qla2xxx_get_tag,
+       .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
+       .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
+       .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
+       .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
+       .tpg_check_demo_mode            = tcm_qla2xxx_check_false,
+       .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_true,
+       .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
+       .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
+       .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
+       .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
+       .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
+       .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
+       .release_cmd                    = tcm_qla2xxx_release_cmd,
+       .shutdown_session               = tcm_qla2xxx_shutdown_session,
+       .close_session                  = tcm_qla2xxx_close_session,
+       .sess_get_index                 = tcm_qla2xxx_sess_get_index,
+       .sess_get_initiator_sid         = NULL,
+       .write_pending                  = tcm_qla2xxx_write_pending,
+       .write_pending_status           = tcm_qla2xxx_write_pending_status,
+       .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
+       .get_task_tag                   = tcm_qla2xxx_get_task_tag,
+       .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
+       .queue_data_in                  = tcm_qla2xxx_queue_data_in,
+       .queue_status                   = tcm_qla2xxx_queue_status,
+       .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
+       .get_fabric_sense_len           = tcm_qla2xxx_get_fabric_sense_len,
+       .set_fabric_sense_len           = tcm_qla2xxx_set_fabric_sense_len,
+       /*
+        * Setup function pointers for generic logic in
+        * target_core_fabric_configfs.c
+        */
+       .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
+       .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
+       .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
+       .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
+       .fabric_post_link               = NULL,
+       .fabric_pre_unlink              = NULL,
+       .fabric_make_np                 = NULL,
+       .fabric_drop_np                 = NULL,
+       .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
+       .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
+};
+
+static int tcm_qla2xxx_register_configfs(void)
+{
+       struct target_fabric_configfs *fabric, *npiv_fabric;
+       int ret;
+
+       pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
+           UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
+           utsname()->machine);
+       /*
+        * Register the top level struct config_item_type with TCM core
+        */
+       fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
+       if (IS_ERR(fabric)) {
+               pr_err("target_fabric_configfs_init() failed\n");
+               return PTR_ERR(fabric);
+       }
+       /*
+        * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
+        */
+       fabric->tf_ops = tcm_qla2xxx_ops;
+       /*
+        * Setup default attribute lists for various fabric->tf_cit_tmpl
+        */
+       TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
+       TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
+       TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
+                                               tcm_qla2xxx_tpg_attrib_attrs;
+       TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
+       /*
+        * Register the fabric for use within TCM
+        */
+       ret = target_fabric_configfs_register(fabric);
+       if (ret < 0) {
+               pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
+               return ret;
+       }
+       /*
+        * Setup our local pointer to *fabric
+        */
+       tcm_qla2xxx_fabric_configfs = fabric;
+       pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
+
+       /*
+        * Register the top level struct config_item_type for NPIV with TCM core
+        */
+       npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
+       if (IS_ERR(npiv_fabric)) {
+               pr_err("target_fabric_configfs_init() failed\n");
+               ret = PTR_ERR(npiv_fabric);
+               goto out_fabric;
+       }
+       /*
+        * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
+        */
+       npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
+       /*
+        * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
+        */
+       TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
+       TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+       TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
+       /*
+        * Register the npiv_fabric for use within TCM
+        */
+       ret = target_fabric_configfs_register(npiv_fabric);
+       if (ret < 0) {
+               pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
+               goto out_fabric;
+       }
+       /*
+        * Setup our local pointer to *npiv_fabric
+        */
+       tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
+       pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
+
+       tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
+                                               WQ_MEM_RECLAIM, 0);
+       if (!tcm_qla2xxx_free_wq) {
+               ret = -ENOMEM;
+               goto out_fabric_npiv;
+       }
+
+       tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
+       if (!tcm_qla2xxx_cmd_wq) {
+               ret = -ENOMEM;
+               goto out_free_wq;
+       }
+
+       return 0;
+
+out_free_wq:
+       destroy_workqueue(tcm_qla2xxx_free_wq);
+out_fabric_npiv:
+       target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
+out_fabric:
+       target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
+       return ret;
+}
+
+static void tcm_qla2xxx_deregister_configfs(void)
+{
+       destroy_workqueue(tcm_qla2xxx_cmd_wq);
+       destroy_workqueue(tcm_qla2xxx_free_wq);
+
+       target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
+       tcm_qla2xxx_fabric_configfs = NULL;
+       pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
+
+       target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
+       tcm_qla2xxx_npiv_fabric_configfs = NULL;
+       pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
+}
+
+static int __init tcm_qla2xxx_init(void)
+{
+       int ret;
+
+       ret = tcm_qla2xxx_register_configfs();
+       if (ret < 0)
+               return ret;
+
+       return 0;
+}
+
+static void __exit tcm_qla2xxx_exit(void)
+{
+       tcm_qla2xxx_deregister_configfs();
+}
+
+MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
+MODULE_LICENSE("GPL");
+module_init(tcm_qla2xxx_init);
+module_exit(tcm_qla2xxx_exit);
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.h b/drivers/scsi/qla2xxx/tcm_qla2xxx.h
new file mode 100644 (file)
index 0000000..8254981
--- /dev/null
@@ -0,0 +1,82 @@
+#include <target/target_core_base.h>
+#include <linux/btree.h>
+
+#define TCM_QLA2XXX_VERSION    "v0.1"
+/* length of ASCII WWPNs including pad */
+#define TCM_QLA2XXX_NAMELEN    32
+/* lenth of ASCII NPIV 'WWPN+WWNN' including pad */
+#define TCM_QLA2XXX_NPIV_NAMELEN 66
+
+#include "qla_target.h"
+
+struct tcm_qla2xxx_nacl {
+       /* From libfc struct fc_rport->port_id */
+       u32 nport_id;
+       /* Binary World Wide unique Node Name for remote FC Initiator Nport */
+       u64 nport_wwnn;
+       /* ASCII formatted WWPN for FC Initiator Nport */
+       char nport_name[TCM_QLA2XXX_NAMELEN];
+       /* Pointer to qla_tgt_sess */
+       struct qla_tgt_sess *qla_tgt_sess;
+       /* Pointer to TCM FC nexus */
+       struct se_session *nport_nexus;
+       /* Returned by tcm_qla2xxx_make_nodeacl() */
+       struct se_node_acl se_node_acl;
+};
+
+struct tcm_qla2xxx_tpg_attrib {
+       int generate_node_acls;
+       int cache_dynamic_acls;
+       int demo_mode_write_protect;
+       int prod_mode_write_protect;
+};
+
+struct tcm_qla2xxx_tpg {
+       /* FC lport target portal group tag for TCM */
+       u16 lport_tpgt;
+       /* Atomic bit to determine TPG active status */
+       atomic_t lport_tpg_enabled;
+       /* Pointer back to tcm_qla2xxx_lport */
+       struct tcm_qla2xxx_lport *lport;
+       /* Used by tcm_qla2xxx_tpg_attrib_cit */
+       struct tcm_qla2xxx_tpg_attrib tpg_attrib;
+       /* Returned by tcm_qla2xxx_make_tpg() */
+       struct se_portal_group se_tpg;
+};
+
+#define QLA_TPG_ATTRIB(tpg)    (&(tpg)->tpg_attrib)
+
+struct tcm_qla2xxx_fc_loopid {
+       struct se_node_acl *se_nacl;
+};
+
+struct tcm_qla2xxx_lport {
+       /* SCSI protocol the lport is providing */
+       u8 lport_proto_id;
+       /* Binary World Wide unique Port Name for FC Target Lport */
+       u64 lport_wwpn;
+       /* Binary World Wide unique Port Name for FC NPIV Target Lport */
+       u64 lport_npiv_wwpn;
+       /* Binary World Wide unique Node Name for FC NPIV Target Lport */
+       u64 lport_npiv_wwnn;
+       /* ASCII formatted WWPN for FC Target Lport */
+       char lport_name[TCM_QLA2XXX_NAMELEN];
+       /* ASCII formatted WWPN+WWNN for NPIV FC Target Lport */
+       char lport_npiv_name[TCM_QLA2XXX_NPIV_NAMELEN];
+       /* map for fc_port pointers in 24-bit FC Port ID space */
+       struct btree_head32 lport_fcport_map;
+       /* vmalloc-ed memory for fc_port pointers for 16-bit FC loop ID */
+       struct tcm_qla2xxx_fc_loopid *lport_loopid_map;
+       /* Pointer to struct scsi_qla_host from qla2xxx LLD */
+       struct scsi_qla_host *qla_vha;
+       /* Pointer to struct scsi_qla_host for NPIV VP from qla2xxx LLD */
+       struct scsi_qla_host *qla_npiv_vp;
+       /* Pointer to struct qla_tgt pointer */
+       struct qla_tgt lport_qla_tgt;
+       /* Pointer to struct fc_vport for NPIV vport from libfc */
+       struct fc_vport *npiv_vport;
+       /* Pointer to TPG=1 for non NPIV mode */
+       struct tcm_qla2xxx_tpg *tpg_1;
+       /* Returned by tcm_qla2xxx_make_lport() */
+       struct se_wwn lport_wwn;
+};