Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

Pull SCSI target updates from Nicholas Bellinger:
 "Things have been quiet this round with mostly bugfixes, percpu
  conversions, and other minor iscsi-target conformance testing changes.

  The highlights include:

   - Add demo_mode_discovery attribute for iscsi-target (Thomas)
   - Convert tcm_fc(FCoE) to use percpu-ida pre-allocation
   - Add send completion interrupt coalescing for ib_isert
   - Convert target-core to use percpu-refcounting for se_lun
   - Fix mutex_trylock usage bug in iscsit_increment_maxcmdsn
   - tcm_loop updates (Hannes)
   - target-core ALUA cleanups + prep for v3.14 SCSI Referrals support (Hannes)

  v3.14 is currently shaping to be a busy development cycle in target
  land, with initial support for T10 Referrals and T10 DIF currently on
  the roadmap"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (40 commits)
  iscsi-target: chap auth shouldn't match username with trailing garbage
  iscsi-target: fix extract_param to handle buffer length corner case
  iscsi-target: Expose default_erl as TPG attribute
  target_core_configfs: split up ALUA supported states
  target_core_alua: Make supported states configurable
  target_core_alua: Store supported ALUA states
  target_core_alua: Rename ALUA_ACCESS_STATE_OPTIMIZED
  target_core_alua: spellcheck
  target core: rename (ex,im)plict -> (ex,im)plicit
  percpu-refcount: Add percpu-refcount.o to obj-y
  iscsi-target: Do not reject non-immediate CmdSNs exceeding MaxCmdSN
  iscsi-target: Convert iscsi_session statistics to atomic_long_t
  target: Convert se_device statistics to atomic_long_t
  target: Fix delayed Task Aborted Status (TAS) handling bug
  iscsi-target: Reject unsupported multi PDU text command sequence
  ib_isert: Avoid duplicate iscsit_increment_maxcmdsn call
  iscsi-target: Fix mutex_trylock usage in iscsit_increment_maxcmdsn
  target: Core does not need blkdev.h
  target: Pass through I/O topology for block backstores
  iser-target: Avoid using FRMR for single dma entry requests
  ...

53 files changed, 1009 insertions, 789 deletions

diff --git a/Documentation/target/tcm_mod_builder.py b/Documentation/target/tcm_mod_builder.py
index 54d29c1320ed..230ce71f4d75 100755
--- a/Documentation/target/tcm_mod_builder.py
+++ b/Documentation/target/tcm_mod_builder.py
@@ -440,15 +440,15 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name):
         buf += "        /*\n"
         buf += "         * Setup default attribute lists for various fabric->tf_cit_tmpl\n"
         buf += "         */\n"
-        buf += "        TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = " + fabric_mod_name + "_wwn_attrs;\n"
-        buf += "        TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = NULL;\n"
-        buf += "        TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;\n"
-        buf += "        TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;\n"
-        buf += "        TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;\n"
-        buf += "        TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;\n"
-        buf += "        TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;\n"
-        buf += "        TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;\n"
-        buf += "        TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;\n"
+        buf += "        fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = " + fabric_mod_name + "_wwn_attrs;\n"
+        buf += "        fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = NULL;\n"
+        buf += "        fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;\n"
+        buf += "        fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;\n"
+        buf += "        fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;\n"
+        buf += "        fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;\n"
+        buf += "        fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;\n"
+        buf += "        fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;\n"
+        buf += "        fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;\n"
         buf += "        /*\n"
         buf += "         * Register the fabric for use within TCM\n"
         buf += "         */\n"
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 6df23502059a..6be57c38638d 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -22,6 +22,7 @@
 #include <linux/socket.h>
 #include <linux/in.h>
 #include <linux/in6.h>
+#include <linux/llist.h>
 #include <rdma/ib_verbs.h>
 #include <rdma/rdma_cm.h>
 #include <target/target_core_base.h>
@@ -489,6 +490,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
         kref_init(&isert_conn->conn_kref);
         kref_get(&isert_conn->conn_kref);
         mutex_init(&isert_conn->conn_mutex);
+        mutex_init(&isert_conn->conn_comp_mutex);
         spin_lock_init(&isert_conn->conn_lock);
 
         cma_id->context = isert_conn;
@@ -843,14 +845,32 @@ isert_init_tx_hdrs(struct isert_conn *isert_conn,
 }
 
 static void
-isert_init_send_wr(struct isert_cmd *isert_cmd, struct ib_send_wr *send_wr)
+isert_init_send_wr(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd,
+                   struct ib_send_wr *send_wr, bool coalesce)
 {
+        struct iser_tx_desc *tx_desc = &isert_cmd->tx_desc;
+
         isert_cmd->rdma_wr.iser_ib_op = ISER_IB_SEND;
         send_wr->wr_id = (unsigned long)&isert_cmd->tx_desc;
         send_wr->opcode = IB_WR_SEND;
-        send_wr->send_flags = IB_SEND_SIGNALED;
-        send_wr->sg_list = &isert_cmd->tx_desc.tx_sg[0];
+        send_wr->sg_list = &tx_desc->tx_sg[0];
         send_wr->num_sge = isert_cmd->tx_desc.num_sge;
+        /*
+         * Coalesce send completion interrupts by only setting IB_SEND_SIGNALED
+         * bit for every ISERT_COMP_BATCH_COUNT number of ib_post_send() calls.
+         */
+        mutex_lock(&isert_conn->conn_comp_mutex);
+        if (coalesce &&
+            ++isert_conn->conn_comp_batch < ISERT_COMP_BATCH_COUNT) {
+                llist_add(&tx_desc->comp_llnode, &isert_conn->conn_comp_llist);
+                mutex_unlock(&isert_conn->conn_comp_mutex);
+                return;
+        }
+        isert_conn->conn_comp_batch = 0;
+        tx_desc->comp_llnode_batch = llist_del_all(&isert_conn->conn_comp_llist);
+        mutex_unlock(&isert_conn->conn_comp_mutex);
+
+        send_wr->send_flags = IB_SEND_SIGNALED;
 }
 
 static int
@@ -1582,8 +1602,8 @@ isert_response_completion(struct iser_tx_desc *tx_desc,
 }
 
 static void
-isert_send_completion(struct iser_tx_desc *tx_desc,
-                      struct isert_conn *isert_conn)
+__isert_send_completion(struct iser_tx_desc *tx_desc,
+                        struct isert_conn *isert_conn)
 {
         struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
         struct isert_cmd *isert_cmd = tx_desc->isert_cmd;
@@ -1624,6 +1644,24 @@ isert_send_completion(struct iser_tx_desc *tx_desc,
 }
 
 static void
+isert_send_completion(struct iser_tx_desc *tx_desc,
+                      struct isert_conn *isert_conn)
+{
+        struct llist_node *llnode = tx_desc->comp_llnode_batch;
+        struct iser_tx_desc *t;
+        /*
+         * Drain coalesced completion llist starting from comp_llnode_batch
+         * setup in isert_init_send_wr(), and then complete trailing tx_desc.
+         */
+        while (llnode) {
+                t = llist_entry(llnode, struct iser_tx_desc, comp_llnode);
+                llnode = llist_next(llnode);
+                __isert_send_completion(t, isert_conn);
+        }
+        __isert_send_completion(tx_desc, isert_conn);
+}
+
+static void
 isert_cq_comp_err(struct iser_tx_desc *tx_desc, struct isert_conn *isert_conn)
 {
         struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
@@ -1793,7 +1831,7 @@ isert_put_response(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
                 isert_cmd->tx_desc.num_sge = 2;
         }
 
-        isert_init_send_wr(isert_cmd, send_wr);
+        isert_init_send_wr(isert_conn, isert_cmd, send_wr, true);
 
         pr_debug("Posting SCSI Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
 
@@ -1813,7 +1851,7 @@ isert_put_nopin(struct iscsi_cmd *cmd, struct iscsi_conn *conn,
                                &isert_cmd->tx_desc.iscsi_header,
                                nopout_response);
         isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc);
-        isert_init_send_wr(isert_cmd, send_wr);
+        isert_init_send_wr(isert_conn, isert_cmd, send_wr, false);
 
         pr_debug("Posting NOPIN Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
 
@@ -1831,7 +1869,7 @@ isert_put_logout_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
         iscsit_build_logout_rsp(cmd, conn, (struct iscsi_logout_rsp *)
                                 &isert_cmd->tx_desc.iscsi_header);
         isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc);
-        isert_init_send_wr(isert_cmd, send_wr);
+        isert_init_send_wr(isert_conn, isert_cmd, send_wr, false);
 
         pr_debug("Posting Logout Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
 
@@ -1849,7 +1887,7 @@ isert_put_tm_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
         iscsit_build_task_mgt_rsp(cmd, conn, (struct iscsi_tm_rsp *)
                                   &isert_cmd->tx_desc.iscsi_header);
         isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc);
-        isert_init_send_wr(isert_cmd, send_wr);
+        isert_init_send_wr(isert_conn, isert_cmd, send_wr, false);
 
         pr_debug("Posting Task Management Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
 
@@ -1881,7 +1919,7 @@ isert_put_reject(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
         tx_dsg->lkey    = isert_conn->conn_mr->lkey;
         isert_cmd->tx_desc.num_sge = 2;
 
-        isert_init_send_wr(isert_cmd, send_wr);
+        isert_init_send_wr(isert_conn, isert_cmd, send_wr, false);
 
         pr_debug("Posting Reject IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
 
@@ -1921,7 +1959,7 @@ isert_put_text_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
                 tx_dsg->lkey    = isert_conn->conn_mr->lkey;
                 isert_cmd->tx_desc.num_sge = 2;
         }
-        isert_init_send_wr(isert_cmd, send_wr);
+        isert_init_send_wr(isert_conn, isert_cmd, send_wr, false);
 
         pr_debug("Posting Text Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n");
 
@@ -1991,8 +2029,6 @@ isert_map_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
 
         if (wr->iser_ib_op == ISER_IB_RDMA_WRITE) {
                 data_left = se_cmd->data_length;
-                iscsit_increment_maxcmdsn(cmd, conn->sess);
-                cmd->stat_sn = conn->stat_sn++;
         } else {
                 sg_off = cmd->write_data_done / PAGE_SIZE;
                 data_left = se_cmd->data_length - cmd->write_data_done;
@@ -2204,8 +2240,6 @@ isert_reg_rdma_frwr(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
 
         if (wr->iser_ib_op == ISER_IB_RDMA_WRITE) {
                 data_left = se_cmd->data_length;
-                iscsit_increment_maxcmdsn(cmd, conn->sess);
-                cmd->stat_sn = conn->stat_sn++;
         } else {
                 sg_off = cmd->write_data_done / PAGE_SIZE;
                 data_left = se_cmd->data_length - cmd->write_data_done;
@@ -2259,18 +2293,26 @@ isert_reg_rdma_frwr(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
         data_len = min(data_left, rdma_write_max);
         wr->cur_rdma_length = data_len;
 
-        spin_lock_irqsave(&isert_conn->conn_lock, flags);
-        fr_desc = list_first_entry(&isert_conn->conn_frwr_pool,
-                                   struct fast_reg_descriptor, list);
-        list_del(&fr_desc->list);
-        spin_unlock_irqrestore(&isert_conn->conn_lock, flags);
-        wr->fr_desc = fr_desc;
+        /* if there is a single dma entry, dma mr is sufficient */
+        if (count == 1) {
+                ib_sge->addr = ib_sg_dma_address(ib_dev, &sg_start[0]);
+                ib_sge->length = ib_sg_dma_len(ib_dev, &sg_start[0]);
+                ib_sge->lkey = isert_conn->conn_mr->lkey;
+                wr->fr_desc = NULL;
+        } else {
+                spin_lock_irqsave(&isert_conn->conn_lock, flags);
+                fr_desc = list_first_entry(&isert_conn->conn_frwr_pool,
+                                           struct fast_reg_descriptor, list);
+                list_del(&fr_desc->list);
+                spin_unlock_irqrestore(&isert_conn->conn_lock, flags);
+                wr->fr_desc = fr_desc;
 
-        ret = isert_fast_reg_mr(fr_desc, isert_cmd, isert_conn,
-                          ib_sge, offset, data_len);
-        if (ret) {
-                list_add_tail(&fr_desc->list, &isert_conn->conn_frwr_pool);
-                goto unmap_sg;
+                ret = isert_fast_reg_mr(fr_desc, isert_cmd, isert_conn,
+                                  ib_sge, offset, data_len);
+                if (ret) {
+                        list_add_tail(&fr_desc->list, &isert_conn->conn_frwr_pool);
+                        goto unmap_sg;
+                }
         }
 
         return 0;
@@ -2306,10 +2348,11 @@ isert_put_datain(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
          * Build isert_conn->tx_desc for iSCSI response PDU and attach
          */
         isert_create_send_desc(isert_conn, isert_cmd, &isert_cmd->tx_desc);
-        iscsit_build_rsp_pdu(cmd, conn, false, (struct iscsi_scsi_rsp *)
+        iscsit_build_rsp_pdu(cmd, conn, true, (struct iscsi_scsi_rsp *)
                              &isert_cmd->tx_desc.iscsi_header);
         isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc);
-        isert_init_send_wr(isert_cmd, &isert_cmd->tx_desc.send_wr);
+        isert_init_send_wr(isert_conn, isert_cmd,
+                           &isert_cmd->tx_desc.send_wr, true);
 
         atomic_inc(&isert_conn->post_send_buf_count);
 
diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h
index 631f2090f0b8..691f90ff2d83 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.h
+++ b/drivers/infiniband/ulp/isert/ib_isert.h
@@ -43,6 +43,8 @@ struct iser_tx_desc {
         struct ib_sge   tx_sg[2];
         int             num_sge;
         struct isert_cmd *isert_cmd;
+        struct llist_node *comp_llnode_batch;
+        struct llist_node comp_llnode;
         struct ib_send_wr send_wr;
 } __packed;
 
@@ -121,6 +123,10 @@ struct isert_conn {
         int                     conn_frwr_pool_size;
         /* lock to protect frwr_pool */
         spinlock_t              conn_lock;
+#define ISERT_COMP_BATCH_COUNT  8
+        int                     conn_comp_batch;
+        struct llist_head       conn_comp_llist;
+        struct mutex            conn_comp_mutex;
 };
 
 #define ISERT_MAX_CQ 64
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 6c923c7039a1..520a7e5a490b 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -1352,11 +1352,8 @@ static int srpt_abort_cmd(struct srpt_send_ioctx *ioctx)
 
                 /* XXX(hch): this is a horrible layering violation.. */
                 spin_lock_irqsave(&ioctx->cmd.t_state_lock, flags);
-                ioctx->cmd.transport_state |= CMD_T_LUN_STOP;
                 ioctx->cmd.transport_state &= ~CMD_T_ACTIVE;
                 spin_unlock_irqrestore(&ioctx->cmd.t_state_lock, flags);
-
-                complete(&ioctx->cmd.transport_lun_stop_comp);
                 break;
         case SRPT_STATE_CMD_RSP_SENT:
                 /*
@@ -1364,9 +1361,6 @@ static int srpt_abort_cmd(struct srpt_send_ioctx *ioctx)
                  * not been received in time.
                  */
                 srpt_unmap_sg_to_ib_sge(ioctx->ch, ioctx);
-                spin_lock_irqsave(&ioctx->cmd.t_state_lock, flags);
-                ioctx->cmd.transport_state |= CMD_T_LUN_STOP;
-                spin_unlock_irqrestore(&ioctx->cmd.t_state_lock, flags);
                 target_put_sess_cmd(ioctx->ch->sess, &ioctx->cmd);
                 break;
         case SRPT_STATE_MGMT_RSP_SENT:
@@ -1476,7 +1470,6 @@ static void srpt_handle_rdma_err_comp(struct srpt_rdma_ch *ch,
 {
         struct se_cmd *cmd;
         enum srpt_command_state state;
-        unsigned long flags;
 
         cmd = &ioctx->cmd;
         state = srpt_get_cmd_state(ioctx);
@@ -1496,9 +1489,6 @@ static void srpt_handle_rdma_err_comp(struct srpt_rdma_ch *ch,
                                __func__, __LINE__, state);
                 break;
         case SRPT_RDMA_WRITE_LAST:
-                spin_lock_irqsave(&ioctx->cmd.t_state_lock, flags);
-                ioctx->cmd.transport_state |= CMD_T_LUN_STOP;
-                spin_unlock_irqrestore(&ioctx->cmd.t_state_lock, flags);
                 break;
         default:
                 printk(KERN_ERR "%s[%d]: opcode = %u\n", __func__,
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index f85b9e5c1f05..7eb19be35d46 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -330,7 +330,7 @@ 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;
+        return tpg->tpg_attrib.generate_node_acls;
 }
 
 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
@@ -338,7 +338,7 @@ 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;
+        return tpg->tpg_attrib.cache_dynamic_acls;
 }
 
 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
@@ -346,7 +346,7 @@ 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;
+        return tpg->tpg_attrib.demo_mode_write_protect;
 }
 
 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
@@ -354,7 +354,7 @@ 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;
+        return tpg->tpg_attrib.prod_mode_write_protect;
 }
 
 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
@@ -362,7 +362,7 @@ static int tcm_qla2xxx_check_demo_mode_login_only(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_login_only;
+        return tpg->tpg_attrib.demo_mode_login_only;
 }
 
 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
@@ -847,7 +847,7 @@ static ssize_t tcm_qla2xxx_tpg_attrib_show_##name(			\
         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);        \
+        return sprintf(page, "%u\n", tpg->tpg_attrib.name);     \
 }                                                                       \
                                                                         \
 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name(                     \
@@ -1027,10 +1027,10 @@ static struct se_portal_group *tcm_qla2xxx_make_tpg(
          * 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;
-        QLA_TPG_ATTRIB(tpg)->demo_mode_login_only = 1;
+        tpg->tpg_attrib.generate_node_acls = 1;
+        tpg->tpg_attrib.demo_mode_write_protect = 1;
+        tpg->tpg_attrib.cache_dynamic_acls = 1;
+        tpg->tpg_attrib.demo_mode_login_only = 1;
 
         ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
@@ -1830,16 +1830,16 @@ static int tcm_qla2xxx_register_configfs(void)
         /*
          * 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 =
+        fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
+        fabric->tf_cit_tmpl.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;
+        fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
         /*
          * Register the fabric for use within TCM
          */
@@ -1870,15 +1870,15 @@ static int tcm_qla2xxx_register_configfs(void)
         /*
          * 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;
+        npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
+        npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = NULL;
+        npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;
+        npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
+        npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
+        npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+        npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+        npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+        npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
         /*
          * Register the npiv_fabric for use within TCM
          */
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.h b/drivers/scsi/qla2xxx/tcm_qla2xxx.h
index 329327528a55..771f7b816443 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.h
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.h
@@ -45,8 +45,6 @@ struct tcm_qla2xxx_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;
 };
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 38e44b9abf0f..d70e9119e906 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -805,14 +805,7 @@ int iscsit_setup_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
         int iscsi_task_attr;
         int sam_task_attr;
 
-        spin_lock_bh(&conn->sess->session_stats_lock);
-        conn->sess->cmd_pdus++;
-        if (conn->sess->se_sess->se_node_acl) {
-                spin_lock(&conn->sess->se_sess->se_node_acl->stats_lock);
-                conn->sess->se_sess->se_node_acl->num_cmds++;
-                spin_unlock(&conn->sess->se_sess->se_node_acl->stats_lock);
-        }
-        spin_unlock_bh(&conn->sess->session_stats_lock);
+        atomic_long_inc(&conn->sess->cmd_pdus);
 
         hdr                     = (struct iscsi_scsi_req *) buf;
         payload_length          = ntoh24(hdr->dlength);
@@ -1254,20 +1247,12 @@ iscsit_check_dataout_hdr(struct iscsi_conn *conn, unsigned char *buf,
         int rc;
 
         if (!payload_length) {
-                pr_err("DataOUT payload is ZERO, protocol error.\n");
-                return iscsit_add_reject(conn, ISCSI_REASON_PROTOCOL_ERROR,
-                                         buf);
+                pr_warn("DataOUT payload is ZERO, ignoring.\n");
+                return 0;
         }
 
         /* iSCSI write */
-        spin_lock_bh(&conn->sess->session_stats_lock);
-        conn->sess->rx_data_octets += payload_length;
-        if (conn->sess->se_sess->se_node_acl) {
-                spin_lock(&conn->sess->se_sess->se_node_acl->stats_lock);
-                conn->sess->se_sess->se_node_acl->write_bytes += payload_length;
-                spin_unlock(&conn->sess->se_sess->se_node_acl->stats_lock);
-        }
-        spin_unlock_bh(&conn->sess->session_stats_lock);
+        atomic_long_add(payload_length, &conn->sess->rx_data_octets);
 
         if (payload_length > conn->conn_ops->MaxXmitDataSegmentLength) {
                 pr_err("DataSegmentLength: %u is greater than"
@@ -1486,7 +1471,7 @@ EXPORT_SYMBOL(iscsit_check_dataout_payload);
 
 static int iscsit_handle_data_out(struct iscsi_conn *conn, unsigned char *buf)
 {
-        struct iscsi_cmd *cmd;
+        struct iscsi_cmd *cmd = NULL;
         struct iscsi_data *hdr = (struct iscsi_data *)buf;
         int rc;
         bool data_crc_failed = false;
@@ -1954,6 +1939,13 @@ iscsit_setup_text_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
                                          (unsigned char *)hdr);
         }
 
+        if (!(hdr->flags & ISCSI_FLAG_CMD_FINAL) ||
+             (hdr->flags & ISCSI_FLAG_TEXT_CONTINUE)) {
+                pr_err("Multi sequence text commands currently not supported\n");
+                return iscsit_reject_cmd(cmd, ISCSI_REASON_CMD_NOT_SUPPORTED,
+                                        (unsigned char *)hdr);
+        }
+
         pr_debug("Got Text Request: ITT: 0x%08x, CmdSN: 0x%08x,"
                 " ExpStatSN: 0x%08x, Length: %u\n", hdr->itt, hdr->cmdsn,
                 hdr->exp_statsn, payload_length);
@@ -2630,14 +2622,7 @@ static int iscsit_send_datain(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
                 return -1;
         }
 
-        spin_lock_bh(&conn->sess->session_stats_lock);
-        conn->sess->tx_data_octets += datain.length;
-        if (conn->sess->se_sess->se_node_acl) {
-                spin_lock(&conn->sess->se_sess->se_node_acl->stats_lock);
-                conn->sess->se_sess->se_node_acl->read_bytes += datain.length;
-                spin_unlock(&conn->sess->se_sess->se_node_acl->stats_lock);
-        }
-        spin_unlock_bh(&conn->sess->session_stats_lock);
+        atomic_long_add(datain.length, &conn->sess->tx_data_octets);
         /*
          * Special case for successfully execution w/ both DATAIN
          * and Sense Data.
@@ -3162,9 +3147,7 @@ void iscsit_build_rsp_pdu(struct iscsi_cmd *cmd, struct iscsi_conn *conn,
         if (inc_stat_sn)
                 cmd->stat_sn = conn->stat_sn++;
 
-        spin_lock_bh(&conn->sess->session_stats_lock);
-        conn->sess->rsp_pdus++;
-        spin_unlock_bh(&conn->sess->session_stats_lock);
+        atomic_long_inc(&conn->sess->rsp_pdus);
 
         memset(hdr, 0, ISCSI_HDR_LEN);
         hdr->opcode             = ISCSI_OP_SCSI_CMD_RSP;
@@ -3374,6 +3357,7 @@ static int iscsit_build_sendtargets_response(struct iscsi_cmd *cmd)
         struct iscsi_tiqn *tiqn;
         struct iscsi_tpg_np *tpg_np;
         int buffer_len, end_of_buf = 0, len = 0, payload_len = 0;
+        int target_name_printed;
         unsigned char buf[ISCSI_IQN_LEN+12]; /* iqn + "TargetName=" + \0 */
         unsigned char *text_in = cmd->text_in_ptr, *text_ptr = NULL;
 
@@ -3411,19 +3395,23 @@ static int iscsit_build_sendtargets_response(struct iscsi_cmd *cmd)
                         continue;
                 }
 
-                len = sprintf(buf, "TargetName=%s", tiqn->tiqn);
-                len += 1;
-
-                if ((len + payload_len) > buffer_len) {
-                        end_of_buf = 1;
-                        goto eob;
-                }
-                memcpy(payload + payload_len, buf, len);
-                payload_len += len;
+                target_name_printed = 0;
 
                 spin_lock(&tiqn->tiqn_tpg_lock);
                 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
 
+                        /* If demo_mode_discovery=0 and generate_node_acls=0
+                         * (demo mode dislabed) do not return
+                         * TargetName+TargetAddress unless a NodeACL exists.
+                         */
+
+                        if ((tpg->tpg_attrib.generate_node_acls == 0) &&
+                            (tpg->tpg_attrib.demo_mode_discovery == 0) &&
+                            (!core_tpg_get_initiator_node_acl(&tpg->tpg_se_tpg,
+                                cmd->conn->sess->sess_ops->InitiatorName))) {
+                                continue;
+                        }
+
                         spin_lock(&tpg->tpg_state_lock);
                         if ((tpg->tpg_state == TPG_STATE_FREE) ||
                             (tpg->tpg_state == TPG_STATE_INACTIVE)) {
@@ -3438,6 +3426,22 @@ static int iscsit_build_sendtargets_response(struct iscsi_cmd *cmd)
                                 struct iscsi_np *np = tpg_np->tpg_np;
                                 bool inaddr_any = iscsit_check_inaddr_any(np);
 
+                                if (!target_name_printed) {
+                                        len = sprintf(buf, "TargetName=%s",
+                                                      tiqn->tiqn);
+                                        len += 1;
+
+                                        if ((len + payload_len) > buffer_len) {
+                                                spin_unlock(&tpg->tpg_np_lock);
+                                                spin_unlock(&tiqn->tiqn_tpg_lock);
+                                                end_of_buf = 1;
+                                                goto eob;
+                                        }
+                                        memcpy(payload + payload_len, buf, len);
+                                        payload_len += len;
+                                        target_name_printed = 1;
+                                }
+
                                 len = sprintf(buf, "TargetAddress="
                                         "%s:%hu,%hu",
                                         (inaddr_any == false) ?
@@ -4092,9 +4096,7 @@ restart:
                                  * hit default in the switch below.
                                  */
                                 memset(buffer, 0xff, ISCSI_HDR_LEN);
-                                spin_lock_bh(&conn->sess->session_stats_lock);
-                                conn->sess->conn_digest_errors++;
-                                spin_unlock_bh(&conn->sess->session_stats_lock);
+                                atomic_long_inc(&conn->sess->conn_digest_errors);
                         } else {
                                 pr_debug("Got HeaderDigest CRC32C"
                                                 " 0x%08x\n", checksum);
@@ -4381,7 +4383,7 @@ int iscsit_close_connection(
 
 int iscsit_close_session(struct iscsi_session *sess)
 {
-        struct iscsi_portal_group *tpg = ISCSI_TPG_S(sess);
+        struct iscsi_portal_group *tpg = sess->tpg;
         struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
 
         if (atomic_read(&sess->nconn)) {
diff --git a/drivers/target/iscsi/iscsi_target_auth.c b/drivers/target/iscsi/iscsi_target_auth.c
index 7505fddca15f..de77d9aa22c6 100644
--- a/drivers/target/iscsi/iscsi_target_auth.c
+++ b/drivers/target/iscsi/iscsi_target_auth.c
@@ -111,7 +111,7 @@ static struct iscsi_chap *chap_server_open(
         /*
          * Set Identifier.
          */
-        chap->id = ISCSI_TPG_C(conn)->tpg_chap_id++;
+        chap->id = conn->tpg->tpg_chap_id++;
         *aic_len += sprintf(aic_str + *aic_len, "CHAP_I=%d", chap->id);
         *aic_len += 1;
         pr_debug("[server] Sending CHAP_I=%d\n", chap->id);
@@ -146,6 +146,7 @@ static int chap_server_compute_md5(
         unsigned char client_digest[MD5_SIGNATURE_SIZE];
         unsigned char server_digest[MD5_SIGNATURE_SIZE];
         unsigned char chap_n[MAX_CHAP_N_SIZE], chap_r[MAX_RESPONSE_LENGTH];
+        size_t compare_len;
         struct iscsi_chap *chap = conn->auth_protocol;
         struct crypto_hash *tfm;
         struct hash_desc desc;
@@ -184,7 +185,9 @@ static int chap_server_compute_md5(
                 goto out;
         }
 
-        if (memcmp(chap_n, auth->userid, strlen(auth->userid)) != 0) {
+        /* Include the terminating NULL in the compare */
+        compare_len = strlen(auth->userid) + 1;
+        if (strncmp(chap_n, auth->userid, compare_len) != 0) {
                 pr_err("CHAP_N values do not match!\n");
                 goto out;
         }
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index fd145259361d..e3318edb233d 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -372,7 +372,7 @@ static ssize_t iscsi_nacl_attrib_show_##name(				\
         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
                                         se_node_acl);                   \
                                                                         \
-        return sprintf(page, "%u\n", ISCSI_NODE_ATTRIB(nacl)->name);    \
+        return sprintf(page, "%u\n", nacl->node_attrib.name);           \
 }                                                                       \
                                                                         \
 static ssize_t iscsi_nacl_attrib_store_##name(                          \
@@ -897,7 +897,7 @@ static struct se_node_acl *lio_target_make_nodeacl(
         if (!se_nacl_new)
                 return ERR_PTR(-ENOMEM);
 
-        cmdsn_depth = ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
+        cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth;
         /*
          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
          * when converting a NdoeACL from demo mode -> explict
@@ -920,9 +920,9 @@ static struct se_node_acl *lio_target_make_nodeacl(
                 return ERR_PTR(-ENOMEM);
         }
 
-        stats_cg->default_groups[0] = &NODE_STAT_GRPS(acl)->iscsi_sess_stats_group;
+        stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
         stats_cg->default_groups[1] = NULL;
-        config_group_init_type_name(&NODE_STAT_GRPS(acl)->iscsi_sess_stats_group,
+        config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 
         return se_nacl;
@@ -967,7 +967,7 @@ static ssize_t iscsi_tpg_attrib_show_##name(				\
         if (iscsit_get_tpg(tpg) < 0)                                    \
                 return -EINVAL;                                         \
                                                                         \
-        rb = sprintf(page, "%u\n", ISCSI_TPG_ATTRIB(tpg)->name);        \
+        rb = sprintf(page, "%u\n", tpg->tpg_attrib.name);               \
         iscsit_put_tpg(tpg);                                            \
         return rb;                                                      \
 }                                                                       \
@@ -1041,6 +1041,16 @@ TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
  */
 DEF_TPG_ATTRIB(prod_mode_write_protect);
 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
+/*
+ * Define iscsi_tpg_attrib_s_demo_mode_discovery,
+ */
+DEF_TPG_ATTRIB(demo_mode_discovery);
+TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
+/*
+ * Define iscsi_tpg_attrib_s_default_erl
+ */
+DEF_TPG_ATTRIB(default_erl);
+TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
 
 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
         &iscsi_tpg_attrib_authentication.attr,
@@ -1051,6 +1061,8 @@ static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
+        &iscsi_tpg_attrib_demo_mode_discovery.attr,
+        &iscsi_tpg_attrib_default_erl.attr,
         NULL,
 };
 
@@ -1514,21 +1526,21 @@ static struct se_wwn *lio_target_call_coreaddtiqn(
                 return ERR_PTR(-ENOMEM);
         }
 
-        stats_cg->default_groups[0] = &WWN_STAT_GRPS(tiqn)->iscsi_instance_group;
-        stats_cg->default_groups[1] = &WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group;
-        stats_cg->default_groups[2] = &WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group;
-        stats_cg->default_groups[3] = &WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group;
-        stats_cg->default_groups[4] = &WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group;
+        stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
+        stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
+        stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
+        stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
+        stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
         stats_cg->default_groups[5] = NULL;
-        config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_instance_group,
+        config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
                         "iscsi_instance", &iscsi_stat_instance_cit);
-        config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group,
+        config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
-        config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group,
+        config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
-        config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group,
+        config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
                         "iscsi_login_stats", &iscsi_stat_login_cit);
-        config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group,
+        config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
 
         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
@@ -1784,6 +1796,11 @@ static int lio_queue_status(struct se_cmd *se_cmd)
         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
 
         cmd->i_state = ISTATE_SEND_STATUS;
+
+        if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
+                iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
+                return 0;
+        }
         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
 
         return 0;
@@ -1815,21 +1832,21 @@ static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
 {
         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
 
-        return ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
+        return tpg->tpg_attrib.default_cmdsn_depth;
 }
 
 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
 {
         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
 
-        return ISCSI_TPG_ATTRIB(tpg)->generate_node_acls;
+        return tpg->tpg_attrib.generate_node_acls;
 }
 
 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
 {
         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
 
-        return ISCSI_TPG_ATTRIB(tpg)->cache_dynamic_acls;
+        return tpg->tpg_attrib.cache_dynamic_acls;
 }
 
 static int lio_tpg_check_demo_mode_write_protect(
@@ -1837,7 +1854,7 @@ static int lio_tpg_check_demo_mode_write_protect(
 {
         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
 
-        return ISCSI_TPG_ATTRIB(tpg)->demo_mode_write_protect;
+        return tpg->tpg_attrib.demo_mode_write_protect;
 }
 
 static int lio_tpg_check_prod_mode_write_protect(
@@ -1845,7 +1862,7 @@ static int lio_tpg_check_prod_mode_write_protect(
 {
         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
 
-        return ISCSI_TPG_ATTRIB(tpg)->prod_mode_write_protect;
+        return tpg->tpg_attrib.prod_mode_write_protect;
 }
 
 static void lio_tpg_release_fabric_acl(
@@ -1908,9 +1925,12 @@ static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
 {
         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
                                 se_node_acl);
+        struct se_portal_group *se_tpg = se_acl->se_tpg;
+        struct iscsi_portal_group *tpg = container_of(se_tpg,
+                                struct iscsi_portal_group, tpg_se_tpg);
 
-        ISCSI_NODE_ATTRIB(acl)->nacl = acl;
-        iscsit_set_default_node_attribues(acl);
+        acl->node_attrib.nacl = acl;
+        iscsit_set_default_node_attribues(acl, tpg);
 }
 
 static int lio_check_stop_free(struct se_cmd *se_cmd)
@@ -1995,17 +2015,17 @@ int iscsi_target_register_configfs(void)
          * Setup default attribute lists for various fabric->tf_cit_tmpl
          * sturct config_item_type's
          */
-        TF_CIT_TMPL(fabric)->tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
-        TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
+        fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
+        fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
 
         ret = target_fabric_configfs_register(fabric);
         if (ret < 0) {
diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h
index 9a5721b8ff96..48f7b3bf4e8c 100644
--- a/drivers/target/iscsi/iscsi_target_core.h
+++ b/drivers/target/iscsi/iscsi_target_core.h
@@ -37,9 +37,6 @@
 #define NA_RANDOM_DATAIN_PDU_OFFSETS    0
 #define NA_RANDOM_DATAIN_SEQ_OFFSETS    0
 #define NA_RANDOM_R2T_OFFSETS           0
-#define NA_DEFAULT_ERL                  0
-#define NA_DEFAULT_ERL_MAX              2
-#define NA_DEFAULT_ERL_MIN              0
 
 /* struct iscsi_tpg_attrib sanity values */
 #define TA_AUTHENTICATION               1
@@ -58,6 +55,8 @@
 #define TA_DEMO_MODE_WRITE_PROTECT      1
 /* Disabled by default in production mode w/ explict ACLs */
 #define TA_PROD_MODE_WRITE_PROTECT      0
+#define TA_DEMO_MODE_DISCOVERY          1
+#define TA_DEFAULT_ERL                  0
 #define TA_CACHE_CORE_NPS               0
 
 
@@ -192,6 +191,7 @@ enum recover_cmdsn_ret_table {
         CMDSN_NORMAL_OPERATION          = 0,
         CMDSN_LOWER_THAN_EXP            = 1,
         CMDSN_HIGHER_THAN_EXP           = 2,
+        CMDSN_MAXCMDSN_OVERRUN          = 3,
 };
 
 /* Used for iscsi_handle_immediate_data() return values */
@@ -650,14 +650,13 @@ struct iscsi_session {
         /* Used for session reference counting */
         int                     session_usage_count;
         int                     session_waiting_on_uc;
-        u32                     cmd_pdus;
-        u32                     rsp_pdus;
-        u64                     tx_data_octets;
-        u64                     rx_data_octets;
-        u32                     conn_digest_errors;
-        u32                     conn_timeout_errors;
+        atomic_long_t           cmd_pdus;
+        atomic_long_t           rsp_pdus;
+        atomic_long_t           tx_data_octets;
+        atomic_long_t           rx_data_octets;
+        atomic_long_t           conn_digest_errors;
+        atomic_long_t           conn_timeout_errors;
         u64                     creation_time;
-        spinlock_t              session_stats_lock;
         /* Number of active connections */
         atomic_t                nconn;
         atomic_t                session_continuation;
@@ -755,11 +754,6 @@ struct iscsi_node_acl {
         struct se_node_acl      se_node_acl;
 };
 
-#define NODE_STAT_GRPS(nacl)    (&(nacl)->node_stat_grps)
-
-#define ISCSI_NODE_ATTRIB(t)    (&(t)->node_attrib)
-#define ISCSI_NODE_AUTH(t)      (&(t)->node_auth)
-
 struct iscsi_tpg_attrib {
         u32                     authentication;
         u32                     login_timeout;
@@ -769,6 +763,8 @@ struct iscsi_tpg_attrib {
         u32                     default_cmdsn_depth;
         u32                     demo_mode_write_protect;
         u32                     prod_mode_write_protect;
+        u32                     demo_mode_discovery;
+        u32                     default_erl;
         struct iscsi_portal_group *tpg;
 };
 
@@ -835,12 +831,6 @@ struct iscsi_portal_group {
         struct list_head        tpg_list;
 } ____cacheline_aligned;
 
-#define ISCSI_TPG_C(c)          ((struct iscsi_portal_group *)(c)->tpg)
-#define ISCSI_TPG_LUN(c, l)  ((iscsi_tpg_list_t *)(c)->tpg->tpg_lun_list_t[l])
-#define ISCSI_TPG_S(s)          ((struct iscsi_portal_group *)(s)->tpg)
-#define ISCSI_TPG_ATTRIB(t)     (&(t)->tpg_attrib)
-#define SE_TPG(tpg)             (&(tpg)->tpg_se_tpg)
-
 struct iscsi_wwn_stat_grps {
         struct config_group     iscsi_stat_group;
         struct config_group     iscsi_instance_group;
@@ -871,8 +861,6 @@ struct iscsi_tiqn {
         struct iscsi_logout_stats    logout_stats;
 } ____cacheline_aligned;
 
-#define WWN_STAT_GRPS(tiqn)     (&(tiqn)->tiqn_stat_grps)
-
 struct iscsit_global {
         /* In core shutdown */
         u32                     in_shutdown;
diff --git a/drivers/target/iscsi/iscsi_target_device.c b/drivers/target/iscsi/iscsi_target_device.c
index 6c7a5104a4cd..7087c736daa5 100644
--- a/drivers/target/iscsi/iscsi_target_device.c
+++ b/drivers/target/iscsi/iscsi_target_device.c
@@ -58,11 +58,7 @@ void iscsit_increment_maxcmdsn(struct iscsi_cmd *cmd, struct iscsi_session *sess
 
         cmd->maxcmdsn_inc = 1;
 
-        if (!mutex_trylock(&sess->cmdsn_mutex)) {
-                sess->max_cmd_sn += 1;
-                pr_debug("Updated MaxCmdSN to 0x%08x\n", sess->max_cmd_sn);
-                return;
-        }
+        mutex_lock(&sess->cmdsn_mutex);
         sess->max_cmd_sn += 1;
         pr_debug("Updated MaxCmdSN to 0x%08x\n", sess->max_cmd_sn);
         mutex_unlock(&sess->cmdsn_mutex);
diff --git a/drivers/target/iscsi/iscsi_target_erl0.c b/drivers/target/iscsi/iscsi_target_erl0.c
index 41052e512d92..0d1e6ee3e992 100644
--- a/drivers/target/iscsi/iscsi_target_erl0.c
+++ b/drivers/target/iscsi/iscsi_target_erl0.c
@@ -757,7 +757,7 @@ int iscsit_check_post_dataout(
 static void iscsit_handle_time2retain_timeout(unsigned long data)
 {
         struct iscsi_session *sess = (struct iscsi_session *) data;
-        struct iscsi_portal_group *tpg = ISCSI_TPG_S(sess);
+        struct iscsi_portal_group *tpg = sess->tpg;
         struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
 
         spin_lock_bh(&se_tpg->session_lock);
@@ -785,7 +785,7 @@ static void iscsit_handle_time2retain_timeout(unsigned long data)
                 tiqn->sess_err_stats.last_sess_failure_type =
                                 ISCSI_SESS_ERR_CXN_TIMEOUT;
                 tiqn->sess_err_stats.cxn_timeout_errors++;
-                sess->conn_timeout_errors++;
+                atomic_long_inc(&sess->conn_timeout_errors);
                 spin_unlock(&tiqn->sess_err_stats.lock);
         }
         }
@@ -801,9 +801,9 @@ void iscsit_start_time2retain_handler(struct iscsi_session *sess)
          * Only start Time2Retain timer when the associated TPG is still in
          * an ACTIVE (eg: not disabled or shutdown) state.
          */
-        spin_lock(&ISCSI_TPG_S(sess)->tpg_state_lock);
-        tpg_active = (ISCSI_TPG_S(sess)->tpg_state == TPG_STATE_ACTIVE);
-        spin_unlock(&ISCSI_TPG_S(sess)->tpg_state_lock);
+        spin_lock(&sess->tpg->tpg_state_lock);
+        tpg_active = (sess->tpg->tpg_state == TPG_STATE_ACTIVE);
+        spin_unlock(&sess->tpg->tpg_state_lock);
 
         if (!tpg_active)
                 return;
@@ -829,7 +829,7 @@ void iscsit_start_time2retain_handler(struct iscsi_session *sess)
  */
 int iscsit_stop_time2retain_timer(struct iscsi_session *sess)
 {
-        struct iscsi_portal_group *tpg = ISCSI_TPG_S(sess);
+        struct iscsi_portal_group *tpg = sess->tpg;
         struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
 
         if (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index 1794c753954a..4eb93b2b6473 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -305,7 +305,6 @@ static int iscsi_login_zero_tsih_s1(
         }
 
         sess->creation_time = get_jiffies_64();
-        spin_lock_init(&sess->session_stats_lock);
         /*
          * The FFP CmdSN window values will be allocated from the TPG's
          * Initiator Node's ACL once the login has been successfully completed.
@@ -347,15 +346,15 @@ static int iscsi_login_zero_tsih_s2(
          * Assign a new TPG Session Handle.  Note this is protected with
          * struct iscsi_portal_group->np_login_sem from iscsit_access_np().
          */
-        sess->tsih = ++ISCSI_TPG_S(sess)->ntsih;
+        sess->tsih = ++sess->tpg->ntsih;
         if (!sess->tsih)
-                sess->tsih = ++ISCSI_TPG_S(sess)->ntsih;
+                sess->tsih = ++sess->tpg->ntsih;
 
         /*
          * Create the default params from user defined values..
          */
         if (iscsi_copy_param_list(&conn->param_list,
-                                ISCSI_TPG_C(conn)->param_list, 1) < 0) {
+                                conn->tpg->param_list, 1) < 0) {
                 iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
                                 ISCSI_LOGIN_STATUS_NO_RESOURCES);
                 return -1;
@@ -380,7 +379,7 @@ static int iscsi_login_zero_tsih_s2(
          * In our case, we have already located the struct iscsi_tiqn at this point.
          */
         memset(buf, 0, 32);
-        sprintf(buf, "TargetPortalGroupTag=%hu", ISCSI_TPG_S(sess)->tpgt);
+        sprintf(buf, "TargetPortalGroupTag=%hu", sess->tpg->tpgt);
         if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) {
                 iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
                                 ISCSI_LOGIN_STATUS_NO_RESOURCES);
@@ -575,7 +574,7 @@ static int iscsi_login_non_zero_tsih_s2(
         iscsi_login_set_conn_values(sess, conn, pdu->cid);
 
         if (iscsi_copy_param_list(&conn->param_list,
-                        ISCSI_TPG_C(conn)->param_list, 0) < 0) {
+                        conn->tpg->param_list, 0) < 0) {
                 iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
                                 ISCSI_LOGIN_STATUS_NO_RESOURCES);
                 return -1;
@@ -593,7 +592,7 @@ static int iscsi_login_non_zero_tsih_s2(
          * In our case, we have already located the struct iscsi_tiqn at this point.
          */
         memset(buf, 0, 32);
-        sprintf(buf, "TargetPortalGroupTag=%hu", ISCSI_TPG_S(sess)->tpgt);
+        sprintf(buf, "TargetPortalGroupTag=%hu", sess->tpg->tpgt);
         if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) {
                 iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
                                 ISCSI_LOGIN_STATUS_NO_RESOURCES);
@@ -691,7 +690,7 @@ int iscsi_post_login_handler(
         int stop_timer = 0;
         struct iscsi_session *sess = conn->sess;
         struct se_session *se_sess = sess->se_sess;
-        struct iscsi_portal_group *tpg = ISCSI_TPG_S(sess);
+        struct iscsi_portal_group *tpg = sess->tpg;
         struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
         struct iscsi_thread_set *ts;
 
@@ -1154,7 +1153,7 @@ old_sess_out:
                 spin_lock_bh(&conn->sess->conn_lock);
                 if (conn->sess->session_state == TARG_SESS_STATE_FAILED) {
                         struct se_portal_group *se_tpg =
-                                        &ISCSI_TPG_C(conn)->tpg_se_tpg;
+                                        &conn->tpg->tpg_se_tpg;
 
                         atomic_set(&conn->sess->session_continuation, 0);
                         spin_unlock_bh(&conn->sess->conn_lock);
diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c
index ef6d836a4d09..83c965c65386 100644
--- a/drivers/target/iscsi/iscsi_target_nego.c
+++ b/drivers/target/iscsi/iscsi_target_nego.c
@@ -88,7 +88,7 @@ int extract_param(
         if (len < 0)
                 return -1;
 
-        if (len > max_length) {
+        if (len >= max_length) {
                 pr_err("Length of input: %d exceeds max_length:"
                         " %d\n", len, max_length);
                 return -1;
@@ -140,7 +140,7 @@ static u32 iscsi_handle_authentication(
                         iscsi_nacl = container_of(se_nacl, struct iscsi_node_acl,
                                                   se_node_acl);
 
-                        auth = ISCSI_NODE_AUTH(iscsi_nacl);
+                        auth = &iscsi_nacl->node_auth;
                 }
         } else {
                 /*
@@ -789,7 +789,7 @@ static int iscsi_target_handle_csg_zero(
                 return -1;
 
         if (!iscsi_check_negotiated_keys(conn->param_list)) {
-                if (ISCSI_TPG_ATTRIB(ISCSI_TPG_C(conn))->authentication &&
+                if (conn->tpg->tpg_attrib.authentication &&
                     !strncmp(param->value, NONE, 4)) {
                         pr_err("Initiator sent AuthMethod=None but"
                                 " Target is enforcing iSCSI Authentication,"
@@ -799,7 +799,7 @@ static int iscsi_target_handle_csg_zero(
                         return -1;
                 }
 
-                if (ISCSI_TPG_ATTRIB(ISCSI_TPG_C(conn))->authentication &&
+                if (conn->tpg->tpg_attrib.authentication &&
                     !login->auth_complete)
                         return 0;
 
@@ -862,7 +862,7 @@ static int iscsi_target_handle_csg_one(struct iscsi_conn *conn, struct iscsi_log
         }
 
         if (!login->auth_complete &&
-             ISCSI_TPG_ATTRIB(ISCSI_TPG_C(conn))->authentication) {
+             conn->tpg->tpg_attrib.authentication) {
                 pr_err("Initiator is requesting CSG: 1, has not been"
                          " successfully authenticated, and the Target is"
                         " enforcing iSCSI Authentication, login failed.\n");
diff --git a/drivers/target/iscsi/iscsi_target_nodeattrib.c b/drivers/target/iscsi/iscsi_target_nodeattrib.c
index 93bdc475eb00..16454a922e2b 100644
--- a/drivers/target/iscsi/iscsi_target_nodeattrib.c
+++ b/drivers/target/iscsi/iscsi_target_nodeattrib.c
@@ -33,7 +33,8 @@ static inline char *iscsit_na_get_initiatorname(
 }
 
 void iscsit_set_default_node_attribues(
-        struct iscsi_node_acl *acl)
+        struct iscsi_node_acl *acl,
+        struct iscsi_portal_group *tpg)
 {
         struct iscsi_node_attrib *a = &acl->node_attrib;
 
@@ -44,7 +45,7 @@ void iscsit_set_default_node_attribues(
         a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS;
         a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS;
         a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS;
-        a->default_erl = NA_DEFAULT_ERL;
+        a->default_erl = tpg->tpg_attrib.default_erl;
 }
 
 int iscsit_na_dataout_timeout(
diff --git a/drivers/target/iscsi/iscsi_target_nodeattrib.h b/drivers/target/iscsi/iscsi_target_nodeattrib.h
index c970b326ef23..0c69a46a62ec 100644
--- a/drivers/target/iscsi/iscsi_target_nodeattrib.h
+++ b/drivers/target/iscsi/iscsi_target_nodeattrib.h
@@ -1,7 +1,8 @@
 #ifndef ISCSI_TARGET_NODEATTRIB_H
 #define ISCSI_TARGET_NODEATTRIB_H
 
-extern void iscsit_set_default_node_attribues(struct iscsi_node_acl *);
+extern void iscsit_set_default_node_attribues(struct iscsi_node_acl *,
+                                              struct iscsi_portal_group *);
 extern int iscsit_na_dataout_timeout(struct iscsi_node_acl *, u32);
 extern int iscsit_na_dataout_timeout_retries(struct iscsi_node_acl *, u32);
 extern int iscsit_na_nopin_timeout(struct iscsi_node_acl *, u32);
diff --git a/drivers/target/iscsi/iscsi_target_stat.c b/drivers/target/iscsi/iscsi_target_stat.c
index f788e8b5e855..103395510307 100644
--- a/drivers/target/iscsi/iscsi_target_stat.c
+++ b/drivers/target/iscsi/iscsi_target_stat.c
@@ -792,7 +792,8 @@ static ssize_t iscsi_stat_sess_show_attr_cmd_pdus(
         if (se_sess) {
                 sess = se_sess->fabric_sess_ptr;
                 if (sess)
-                        ret = snprintf(page, PAGE_SIZE, "%u\n", sess->cmd_pdus);
+                        ret = snprintf(page, PAGE_SIZE, "%lu\n",
+                                       atomic_long_read(&sess->cmd_pdus));
         }
         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 
@@ -815,7 +816,8 @@ static ssize_t iscsi_stat_sess_show_attr_rsp_pdus(
         if (se_sess) {
                 sess = se_sess->fabric_sess_ptr;
                 if (sess)
-                        ret = snprintf(page, PAGE_SIZE, "%u\n", sess->rsp_pdus);
+                        ret = snprintf(page, PAGE_SIZE, "%lu\n",
+                                       atomic_long_read(&sess->rsp_pdus));
         }
         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 
@@ -838,8 +840,8 @@ static ssize_t iscsi_stat_sess_show_attr_txdata_octs(
         if (se_sess) {
                 sess = se_sess->fabric_sess_ptr;
                 if (sess)
-                        ret = snprintf(page, PAGE_SIZE, "%llu\n",
-                                (unsigned long long)sess->tx_data_octets);
+                        ret = snprintf(page, PAGE_SIZE, "%lu\n",
+                                       atomic_long_read(&sess->tx_data_octets));
         }
         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 
@@ -862,8 +864,8 @@ static ssize_t iscsi_stat_sess_show_attr_rxdata_octs(
         if (se_sess) {
                 sess = se_sess->fabric_sess_ptr;
                 if (sess)
-                        ret = snprintf(page, PAGE_SIZE, "%llu\n",
-                                (unsigned long long)sess->rx_data_octets);
+                        ret = snprintf(page, PAGE_SIZE, "%lu\n",
+                                       atomic_long_read(&sess->rx_data_octets));
         }
         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 
@@ -886,8 +888,8 @@ static ssize_t iscsi_stat_sess_show_attr_conn_digest_errors(
         if (se_sess) {
                 sess = se_sess->fabric_sess_ptr;
                 if (sess)
-                        ret = snprintf(page, PAGE_SIZE, "%u\n",
-                                        sess->conn_digest_errors);
+                        ret = snprintf(page, PAGE_SIZE, "%lu\n",
+                                       atomic_long_read(&sess->conn_digest_errors));
         }
         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 
@@ -910,8 +912,8 @@ static ssize_t iscsi_stat_sess_show_attr_conn_timeout_errors(
         if (se_sess) {
                 sess = se_sess->fabric_sess_ptr;
                 if (sess)
-                        ret = snprintf(page, PAGE_SIZE, "%u\n",
-                                        sess->conn_timeout_errors);
+                        ret = snprintf(page, PAGE_SIZE, "%lu\n",
+                                       atomic_long_read(&sess->conn_timeout_errors));
         }
         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 
diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c
index 4faeb47fa5e1..39761837608d 100644
--- a/drivers/target/iscsi/iscsi_target_tpg.c
+++ b/drivers/target/iscsi/iscsi_target_tpg.c
@@ -223,6 +223,8 @@ static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg)
         a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS;
         a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT;
         a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT;
+        a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY;
+        a->default_erl = TA_DEFAULT_ERL;
 }
 
 int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg)
@@ -237,7 +239,7 @@ int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_gro
         if (iscsi_create_default_params(&tpg->param_list) < 0)
                 goto err_out;
 
-        ISCSI_TPG_ATTRIB(tpg)->tpg = tpg;
+        tpg->tpg_attrib.tpg = tpg;
 
         spin_lock(&tpg->tpg_state_lock);
         tpg->tpg_state  = TPG_STATE_INACTIVE;
@@ -330,7 +332,7 @@ int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg)
                 return -EINVAL;
         }
 
-        if (ISCSI_TPG_ATTRIB(tpg)->authentication) {
+        if (tpg->tpg_attrib.authentication) {
                 if (!strcmp(param->value, NONE)) {
                         ret = iscsi_update_param_value(param, CHAP);
                         if (ret)
@@ -820,3 +822,39 @@ int iscsit_ta_prod_mode_write_protect(
 
         return 0;
 }
+
+int iscsit_ta_demo_mode_discovery(
+        struct iscsi_portal_group *tpg,
+        u32 flag)
+{
+        struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
+
+        if ((flag != 0) && (flag != 1)) {
+                pr_err("Illegal value %d\n", flag);
+                return -EINVAL;
+        }
+
+        a->demo_mode_discovery = flag;
+        pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:"
+                " %s\n", tpg->tpgt, (a->demo_mode_discovery) ?
+                "ON" : "OFF");
+
+        return 0;
+}
+
+int iscsit_ta_default_erl(
+        struct iscsi_portal_group *tpg,
+        u32 default_erl)
+{
+        struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
+
+        if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) {
+                pr_err("Illegal value for default_erl: %u\n", default_erl);
+                return -EINVAL;
+        }
+
+        a->default_erl = default_erl;
+        pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl);
+
+        return 0;
+}
diff --git a/drivers/target/iscsi/iscsi_target_tpg.h b/drivers/target/iscsi/iscsi_target_tpg.h
index b77693e2c209..213c0fc7fdc9 100644
--- a/drivers/target/iscsi/iscsi_target_tpg.h
+++ b/drivers/target/iscsi/iscsi_target_tpg.h
@@ -37,5 +37,7 @@ extern int iscsit_ta_default_cmdsn_depth(struct iscsi_portal_group *, u32);
 extern int iscsit_ta_cache_dynamic_acls(struct iscsi_portal_group *, u32);
 extern int iscsit_ta_demo_mode_write_protect(struct iscsi_portal_group *, u32);
 extern int iscsit_ta_prod_mode_write_protect(struct iscsi_portal_group *, u32);
+extern int iscsit_ta_demo_mode_discovery(struct iscsi_portal_group *, u32);
+extern int iscsit_ta_default_erl(struct iscsi_portal_group *, u32);
 
 #endif /* ISCSI_TARGET_TPG_H */
diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
index b0cac0c342e1..0819e688a398 100644
--- a/drivers/target/iscsi/iscsi_target_util.c
+++ b/drivers/target/iscsi/iscsi_target_util.c
@@ -242,9 +242,9 @@ static inline int iscsit_check_received_cmdsn(struct iscsi_session *sess, u32 cm
          */
         if (iscsi_sna_gt(cmdsn, sess->max_cmd_sn)) {
                 pr_err("Received CmdSN: 0x%08x is greater than"
-                       " MaxCmdSN: 0x%08x, protocol error.\n", cmdsn,
+                       " MaxCmdSN: 0x%08x, ignoring.\n", cmdsn,
                        sess->max_cmd_sn);
-                ret = CMDSN_ERROR_CANNOT_RECOVER;
+                ret = CMDSN_MAXCMDSN_OVERRUN;
 
         } else if (cmdsn == sess->exp_cmd_sn) {
                 sess->exp_cmd_sn++;
@@ -303,14 +303,16 @@ int iscsit_sequence_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
                 ret = CMDSN_HIGHER_THAN_EXP;
                 break;
         case CMDSN_LOWER_THAN_EXP:
+        case CMDSN_MAXCMDSN_OVERRUN:
+        default:
                 cmd->i_state = ISTATE_REMOVE;
                 iscsit_add_cmd_to_immediate_queue(cmd, conn, cmd->i_state);
-                ret = cmdsn_ret;
-                break;
-        default:
-                reason = ISCSI_REASON_PROTOCOL_ERROR;
-                reject = true;
-                ret = cmdsn_ret;
+                /*
+                 * Existing callers for iscsit_sequence_cmd() will silently
+                 * ignore commands with CMDSN_LOWER_THAN_EXP, so force this
+                 * return for CMDSN_MAXCMDSN_OVERRUN as well..
+                 */
+                ret = CMDSN_LOWER_THAN_EXP;
                 break;
         }
         mutex_unlock(&conn->sess->cmdsn_mutex);
@@ -980,7 +982,7 @@ static void iscsit_handle_nopin_response_timeout(unsigned long data)
                 tiqn->sess_err_stats.last_sess_failure_type =
                                 ISCSI_SESS_ERR_CXN_TIMEOUT;
                 tiqn->sess_err_stats.cxn_timeout_errors++;
-                conn->sess->conn_timeout_errors++;
+                atomic_long_inc(&conn->sess->conn_timeout_errors);
                 spin_unlock_bh(&tiqn->sess_err_stats.lock);
         }
         }
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index 0f6d69dabca1..1b41e6776152 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -135,6 +135,21 @@ static int tcm_loop_change_queue_depth(
         return sdev->queue_depth;
 }
 
+static int tcm_loop_change_queue_type(struct scsi_device *sdev, int tag)
+{
+        if (sdev->tagged_supported) {
+                scsi_set_tag_type(sdev, tag);
+
+                if (tag)
+                        scsi_activate_tcq(sdev, sdev->queue_depth);
+                else
+                        scsi_deactivate_tcq(sdev, sdev->queue_depth);
+        } else
+                tag = 0;
+
+        return tag;
+}
+
 /*
  * Locate the SAM Task Attr from struct scsi_cmnd *
  */
@@ -178,7 +193,10 @@ static void tcm_loop_submission_work(struct work_struct *work)
                 set_host_byte(sc, DID_NO_CONNECT);
                 goto out_done;
         }
-
+        if (tl_tpg->tl_transport_status == TCM_TRANSPORT_OFFLINE) {
+                set_host_byte(sc, DID_TRANSPORT_DISRUPTED);
+                goto out_done;
+        }
         tl_nexus = tl_hba->tl_nexus;
         if (!tl_nexus) {
                 scmd_printk(KERN_ERR, sc, "TCM_Loop I_T Nexus"
@@ -233,6 +251,7 @@ static int tcm_loop_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc)
         }
 
         tl_cmd->sc = sc;
+        tl_cmd->sc_cmd_tag = sc->tag;
         INIT_WORK(&tl_cmd->work, tcm_loop_submission_work);
         queue_work(tcm_loop_workqueue, &tl_cmd->work);
         return 0;
@@ -242,41 +261,21 @@ static int tcm_loop_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc)
  * Called from SCSI EH process context to issue a LUN_RESET TMR
  * to struct scsi_device
  */
-static int tcm_loop_device_reset(struct scsi_cmnd *sc)
+static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg,
+                              struct tcm_loop_nexus *tl_nexus,
+                              int lun, int task, enum tcm_tmreq_table tmr)
 {
         struct se_cmd *se_cmd = NULL;
-        struct se_portal_group *se_tpg;
         struct se_session *se_sess;
+        struct se_portal_group *se_tpg;
         struct tcm_loop_cmd *tl_cmd = NULL;
-        struct tcm_loop_hba *tl_hba;
-        struct tcm_loop_nexus *tl_nexus;
         struct tcm_loop_tmr *tl_tmr = NULL;
-        struct tcm_loop_tpg *tl_tpg;
-        int ret = FAILED, rc;
-        /*
-         * Locate the tcm_loop_hba_t pointer
-         */
-        tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
-        /*
-         * Locate the tl_nexus and se_sess pointers
-         */
-        tl_nexus = tl_hba->tl_nexus;
-        if (!tl_nexus) {
-                pr_err("Unable to perform device reset without"
-                                " active I_T Nexus\n");
-                return FAILED;
-        }
-        se_sess = tl_nexus->se_sess;
-        /*
-         * Locate the tl_tpg and se_tpg pointers from TargetID in sc->device->id
-         */
-        tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
-        se_tpg = &tl_tpg->tl_se_tpg;
+        int ret = TMR_FUNCTION_FAILED, rc;
 
         tl_cmd = kmem_cache_zalloc(tcm_loop_cmd_cache, GFP_KERNEL);
         if (!tl_cmd) {
                 pr_err("Unable to allocate memory for tl_cmd\n");
-                return FAILED;
+                return ret;
         }
 
         tl_tmr = kzalloc(sizeof(struct tcm_loop_tmr), GFP_KERNEL);
@@ -287,6 +286,8 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc)
         init_waitqueue_head(&tl_tmr->tl_tmr_wait);
 
         se_cmd = &tl_cmd->tl_se_cmd;
+        se_tpg = &tl_tpg->tl_se_tpg;
+        se_sess = tl_nexus->se_sess;
         /*
          * Initialize struct se_cmd descriptor from target_core_mod infrastructure
          */
@@ -294,17 +295,23 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc)
                                 DMA_NONE, MSG_SIMPLE_TAG,
                                 &tl_cmd->tl_sense_buf[0]);
 
-        rc = core_tmr_alloc_req(se_cmd, tl_tmr, TMR_LUN_RESET, GFP_KERNEL);
+        rc = core_tmr_alloc_req(se_cmd, tl_tmr, tmr, GFP_KERNEL);
         if (rc < 0)
                 goto release;
+
+        if (tmr == TMR_ABORT_TASK)
+                se_cmd->se_tmr_req->ref_task_tag = task;
+
         /*
-         * Locate the underlying TCM struct se_lun from sc->device->lun
+         * Locate the underlying TCM struct se_lun
          */
-        if (transport_lookup_tmr_lun(se_cmd, sc->device->lun) < 0)
+        if (transport_lookup_tmr_lun(se_cmd, lun) < 0) {
+                ret = TMR_LUN_DOES_NOT_EXIST;
                 goto release;
+        }
         /*
-         * Queue the TMR to TCM Core and sleep waiting for tcm_loop_queue_tm_rsp()
-         * to wake us up.
+         * Queue the TMR to TCM Core and sleep waiting for
+         * tcm_loop_queue_tm_rsp() to wake us up.
          */
         transport_generic_handle_tmr(se_cmd);
         wait_event(tl_tmr->tl_tmr_wait, atomic_read(&tl_tmr->tmr_complete));
@@ -312,8 +319,7 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc)
          * The TMR LUN_RESET has completed, check the response status and
          * then release allocations.
          */
-        ret = (se_cmd->se_tmr_req->response == TMR_FUNCTION_COMPLETE) ?
-                SUCCESS : FAILED;
+        ret = se_cmd->se_tmr_req->response;
 release:
         if (se_cmd)
                 transport_generic_free_cmd(se_cmd, 1);
@@ -323,6 +329,94 @@ release:
         return ret;
 }
 
+static int tcm_loop_abort_task(struct scsi_cmnd *sc)
+{
+        struct tcm_loop_hba *tl_hba;
+        struct tcm_loop_nexus *tl_nexus;
+        struct tcm_loop_tpg *tl_tpg;
+        int ret = FAILED;
+
+        /*
+         * Locate the tcm_loop_hba_t pointer
+         */
+        tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
+        /*
+         * Locate the tl_nexus and se_sess pointers
+         */
+        tl_nexus = tl_hba->tl_nexus;
+        if (!tl_nexus) {
+                pr_err("Unable to perform device reset without"
+                                " active I_T Nexus\n");
+                return FAILED;
+        }
+
+        /*
+         * Locate the tl_tpg pointer from TargetID in sc->device->id
+         */
+        tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
+        ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun,
+                                 sc->tag, TMR_ABORT_TASK);
+        return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
+}
+
+/*
+ * Called from SCSI EH process context to issue a LUN_RESET TMR
+ * to struct scsi_device
+ */
+static int tcm_loop_device_reset(struct scsi_cmnd *sc)
+{
+        struct tcm_loop_hba *tl_hba;
+        struct tcm_loop_nexus *tl_nexus;
+        struct tcm_loop_tpg *tl_tpg;
+        int ret = FAILED;
+
+        /*
+         * Locate the tcm_loop_hba_t pointer
+         */
+        tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
+        /*
+         * Locate the tl_nexus and se_sess pointers
+         */
+        tl_nexus = tl_hba->tl_nexus;
+        if (!tl_nexus) {
+                pr_err("Unable to perform device reset without"
+                                " active I_T Nexus\n");
+                return FAILED;
+        }
+        /*
+         * Locate the tl_tpg pointer from TargetID in sc->device->id
+         */
+        tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
+        ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun,
+                                 0, TMR_LUN_RESET);
+        return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
+}
+
+static int tcm_loop_target_reset(struct scsi_cmnd *sc)
+{
+        struct tcm_loop_hba *tl_hba;
+        struct tcm_loop_tpg *tl_tpg;
+
+        /*
+         * Locate the tcm_loop_hba_t pointer
+         */
+        tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
+        if (!tl_hba) {
+                pr_err("Unable to perform device reset without"
+                                " active I_T Nexus\n");
+                return FAILED;
+        }
+        /*
+         * Locate the tl_tpg pointer from TargetID in sc->device->id
+         */
+        tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
+        if (tl_tpg) {
+                tl_tpg->tl_transport_status = TCM_TRANSPORT_ONLINE;
+                return SUCCESS;
+        }
+        return FAILED;
+}
+
 static int tcm_loop_slave_alloc(struct scsi_device *sd)
 {
         set_bit(QUEUE_FLAG_BIDI, &sd->request_queue->queue_flags);
@@ -331,6 +425,15 @@ static int tcm_loop_slave_alloc(struct scsi_device *sd)
 
 static int tcm_loop_slave_configure(struct scsi_device *sd)
 {
+        if (sd->tagged_supported) {
+                scsi_activate_tcq(sd, sd->queue_depth);
+                scsi_adjust_queue_depth(sd, MSG_SIMPLE_TAG,
+                                        sd->host->cmd_per_lun);
+        } else {
+                scsi_adjust_queue_depth(sd, 0,
+                                        sd->host->cmd_per_lun);
+        }
+
         return 0;
 }
 
@@ -340,7 +443,10 @@ static struct scsi_host_template tcm_loop_driver_template = {
         .name                   = "TCM_Loopback",
         .queuecommand           = tcm_loop_queuecommand,
         .change_queue_depth     = tcm_loop_change_queue_depth,
+        .change_queue_type      = tcm_loop_change_queue_type,
+        .eh_abort_handler = tcm_loop_abort_task,
         .eh_device_reset_handler = tcm_loop_device_reset,
+        .eh_target_reset_handler = tcm_loop_target_reset,
         .can_queue              = 1024,
         .this_id                = -1,
         .sg_tablesize           = 256,
@@ -699,7 +805,10 @@ static void tcm_loop_set_default_node_attributes(struct se_node_acl *se_acl)
 
 static u32 tcm_loop_get_task_tag(struct se_cmd *se_cmd)
 {
-        return 1;
+        struct tcm_loop_cmd *tl_cmd = container_of(se_cmd,
+                        struct tcm_loop_cmd, tl_se_cmd);
+
+        return tl_cmd->sc_cmd_tag;
 }
 
 static int tcm_loop_get_cmd_state(struct se_cmd *se_cmd)
@@ -932,7 +1041,10 @@ static int tcm_loop_drop_nexus(
         struct tcm_loop_nexus *tl_nexus;
         struct tcm_loop_hba *tl_hba = tpg->tl_hba;
 
-        tl_nexus = tpg->tl_hba->tl_nexus;
+        if (!tl_hba)
+                return -ENODEV;
+
+        tl_nexus = tl_hba->tl_nexus;
         if (!tl_nexus)
                 return -ENODEV;
 
@@ -1061,8 +1173,56 @@ check_newline:
 
 TF_TPG_BASE_ATTR(tcm_loop, nexus, S_IRUGO | S_IWUSR);
 
+static ssize_t tcm_loop_tpg_show_transport_status(
+        struct se_portal_group *se_tpg,
+        char *page)
+{
+        struct tcm_loop_tpg *tl_tpg = container_of(se_tpg,
+                        struct tcm_loop_tpg, tl_se_tpg);
+        const char *status = NULL;
+        ssize_t ret = -EINVAL;
+
+        switch (tl_tpg->tl_transport_status) {
+        case TCM_TRANSPORT_ONLINE:
+                status = "online";
+                break;
+        case TCM_TRANSPORT_OFFLINE:
+                status = "offline";
+                break;
+        default:
+                break;
+        }
+
+        if (status)
+                ret = snprintf(page, PAGE_SIZE, "%s\n", status);
+
+        return ret;
+}
+
+static ssize_t tcm_loop_tpg_store_transport_status(
+        struct se_portal_group *se_tpg,
+        const char *page,
+        size_t count)
+{
+        struct tcm_loop_tpg *tl_tpg = container_of(se_tpg,
+                        struct tcm_loop_tpg, tl_se_tpg);
+
+        if (!strncmp(page, "online", 6)) {
+                tl_tpg->tl_transport_status = TCM_TRANSPORT_ONLINE;
+                return count;
+        }
+        if (!strncmp(page, "offline", 7)) {
+                tl_tpg->tl_transport_status = TCM_TRANSPORT_OFFLINE;
+                return count;
+        }
+        return -EINVAL;
+}
+
+TF_TPG_BASE_ATTR(tcm_loop, transport_status, S_IRUGO | S_IWUSR);
+
 static struct configfs_attribute *tcm_loop_tpg_attrs[] = {
         &tcm_loop_tpg_nexus.attr,
+        &tcm_loop_tpg_transport_status.attr,
         NULL,
 };
 
@@ -1334,11 +1494,11 @@ static int tcm_loop_register_configfs(void)
         /*
          * Setup default attribute lists for various fabric->tf_cit_tmpl
          */
-        TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_loop_wwn_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_loop_tpg_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
-        TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
-        TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_loop_wwn_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_loop_tpg_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
         /*
          * Once fabric->tf_ops has been setup, now register the fabric for
          * use within TCM
diff --git a/drivers/target/loopback/tcm_loop.h b/drivers/target/loopback/tcm_loop.h
index dd7a84ee78e1..54c59d0b6608 100644
--- a/drivers/target/loopback/tcm_loop.h
+++ b/drivers/target/loopback/tcm_loop.h
@@ -10,6 +10,8 @@
 struct tcm_loop_cmd {
         /* State of Linux/SCSI CDB+Data descriptor */
         u32 sc_cmd_state;
+        /* Tagged command queueing */
+        u32 sc_cmd_tag;
         /* Pointer to the CDB+Data descriptor from Linux/SCSI subsystem */
         struct scsi_cmnd *sc;
         /* The TCM I/O descriptor that is accessed via container_of() */
@@ -40,8 +42,12 @@ struct tcm_loop_nacl {
         struct se_node_acl se_node_acl;
 };
 
+#define TCM_TRANSPORT_ONLINE 0
+#define TCM_TRANSPORT_OFFLINE 1
+
 struct tcm_loop_tpg {
         unsigned short tl_tpgt;
+        unsigned short tl_transport_status;
         atomic_t tl_tpg_port_count;
         struct se_portal_group tl_se_tpg;
         struct tcm_loop_hba *tl_hba;
diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c
index e51b09a04d52..24884cac19ce 100644
--- a/drivers/target/sbp/sbp_target.c
+++ b/drivers/target/sbp/sbp_target.c
@@ -2556,15 +2556,15 @@ static int sbp_register_configfs(void)
         /*
          * Setup default attribute lists for various fabric->tf_cit_tmpl
          */
-        TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = sbp_wwn_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = sbp_tpg_base_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = sbp_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;
+        fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = sbp_wwn_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = sbp_tpg_base_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = sbp_tpg_attrib_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
 
         ret = target_fabric_configfs_register(fabric);
         if (ret < 0) {
diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c
index 47244102281e..fdcee326bfbc 100644
--- a/drivers/target/target_core_alua.c
+++ b/drivers/target/target_core_alua.c
@@ -44,7 +44,7 @@
 static sense_reason_t core_alua_check_transition(int state, int *primary);
 static int core_alua_set_tg_pt_secondary_state(
                 struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem,
-                struct se_port *port, int explict, int offline);
+                struct se_port *port, int explicit, int offline);
 
 static u16 alua_lu_gps_counter;
 static u32 alua_lu_gps_count;
@@ -117,12 +117,7 @@ target_emulate_report_target_port_groups(struct se_cmd *cmd)
                 /*
                  * Set supported ASYMMETRIC ACCESS State bits
                  */
-                buf[off] = 0x80; /* T_SUP */
-                buf[off] |= 0x40; /* O_SUP */
-                buf[off] |= 0x8; /* U_SUP */
-                buf[off] |= 0x4; /* S_SUP */
-                buf[off] |= 0x2; /* AN_SUP */
-                buf[off++] |= 0x1; /* AO_SUP */
+                buf[off++] |= tg_pt_gp->tg_pt_gp_alua_supported_states;
                 /*
                  * TARGET PORT GROUP
                  */
@@ -175,7 +170,7 @@ target_emulate_report_target_port_groups(struct se_cmd *cmd)
         if (ext_hdr != 0) {
                 buf[4] = 0x10;
                 /*
-                 * Set the implict transition time (in seconds) for the application
+                 * Set the implicit transition time (in seconds) for the application
                  * client to use as a base for it's transition timeout value.
                  *
                  * Use the current tg_pt_gp_mem -> tg_pt_gp membership from the LUN
@@ -188,7 +183,7 @@ target_emulate_report_target_port_groups(struct se_cmd *cmd)
                         spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
                         tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
                         if (tg_pt_gp)
-                                buf[5] = tg_pt_gp->tg_pt_gp_implict_trans_secs;
+                                buf[5] = tg_pt_gp->tg_pt_gp_implicit_trans_secs;
                         spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
                 }
         }
@@ -199,7 +194,7 @@ target_emulate_report_target_port_groups(struct se_cmd *cmd)
 }
 
 /*
- * SET_TARGET_PORT_GROUPS for explict ALUA operation.
+ * SET_TARGET_PORT_GROUPS for explicit ALUA operation.
  *
  * See spc4r17 section 6.35
  */
@@ -232,7 +227,7 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd)
                 return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
 
         /*
-         * Determine if explict ALUA via SET_TARGET_PORT_GROUPS is allowed
+         * Determine if explicit ALUA via SET_TARGET_PORT_GROUPS is allowed
          * for the local tg_pt_gp.
          */
         l_tg_pt_gp_mem = l_port->sep_alua_tg_pt_gp_mem;
@@ -251,9 +246,9 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd)
         }
         spin_unlock(&l_tg_pt_gp_mem->tg_pt_gp_mem_lock);
 
-        if (!(l_tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICT_ALUA)) {
+        if (!(l_tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA)) {
                 pr_debug("Unable to process SET_TARGET_PORT_GROUPS"
-                                " while TPGS_EXPLICT_ALUA is disabled\n");
+                                " while TPGS_EXPLICIT_ALUA is disabled\n");
                 rc = TCM_UNSUPPORTED_SCSI_OPCODE;
                 goto out;
         }
@@ -330,7 +325,7 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd)
                         spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
                 } else {
                         /*
-                         * Extact the RELATIVE TARGET PORT IDENTIFIER to identify
+                         * Extract the RELATIVE TARGET PORT IDENTIFIER to identify
                          * the Target Port in question for the the incoming
                          * SET_TARGET_PORT_GROUPS op.
                          */
@@ -487,7 +482,7 @@ static inline int core_alua_state_transition(
         u8 *alua_ascq)
 {
         /*
-         * Allowed CDBs for ALUA_ACCESS_STATE_TRANSITIO as defined by
+         * Allowed CDBs for ALUA_ACCESS_STATE_TRANSITION as defined by
          * spc4r17 section 5.9.2.5
          */
         switch (cdb[0]) {
@@ -515,9 +510,9 @@ static inline int core_alua_state_transition(
 }
 
 /*
- * return 1: Is used to signal LUN not accecsable, and check condition/not ready
+ * return 1: Is used to signal LUN not accessible, and check condition/not ready
  * return 0: Used to signal success
- * reutrn -1: Used to signal failure, and invalid cdb field
+ * return -1: Used to signal failure, and invalid cdb field
  */
 sense_reason_t
 target_alua_state_check(struct se_cmd *cmd)
@@ -566,12 +561,12 @@ target_alua_state_check(struct se_cmd *cmd)
         nonop_delay_msecs = tg_pt_gp->tg_pt_gp_nonop_delay_msecs;
         spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
         /*
-         * Process ALUA_ACCESS_STATE_ACTIVE_OPTMIZED in a separate conditional
+         * Process ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED in a separate conditional
          * statement so the compiler knows explicitly to check this case first.
          * For the Optimized ALUA access state case, we want to process the
          * incoming fabric cmd ASAP..
          */
-        if (out_alua_state == ALUA_ACCESS_STATE_ACTIVE_OPTMIZED)
+        if (out_alua_state == ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED)
                 return 0;
 
         switch (out_alua_state) {
@@ -620,13 +615,13 @@ out:
 }
 
 /*
- * Check implict and explict ALUA state change request.
+ * Check implicit and explicit ALUA state change request.
  */
 static sense_reason_t
 core_alua_check_transition(int state, int *primary)
 {
         switch (state) {
-        case ALUA_ACCESS_STATE_ACTIVE_OPTMIZED:
+        case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED:
         case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED:
         case ALUA_ACCESS_STATE_STANDBY:
         case ALUA_ACCESS_STATE_UNAVAILABLE:
@@ -654,7 +649,7 @@ core_alua_check_transition(int state, int *primary)
 static char *core_alua_dump_state(int state)
 {
         switch (state) {
-        case ALUA_ACCESS_STATE_ACTIVE_OPTMIZED:
+        case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED:
                 return "Active/Optimized";
         case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED:
                 return "Active/NonOptimized";
@@ -676,10 +671,10 @@ char *core_alua_dump_status(int status)
         switch (status) {
         case ALUA_STATUS_NONE:
                 return "None";
-        case ALUA_STATUS_ALTERED_BY_EXPLICT_STPG:
-                return "Altered by Explict STPG";
-        case ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA:
-                return "Altered by Implict ALUA";
+        case ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG:
+                return "Altered by Explicit STPG";
+        case ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA:
+                return "Altered by Implicit ALUA";
         default:
                 return "Unknown";
         }
@@ -770,7 +765,7 @@ static int core_alua_do_transition_tg_pt(
         struct se_node_acl *nacl,
         unsigned char *md_buf,
         int new_state,
-        int explict)
+        int explicit)
 {
         struct se_dev_entry *se_deve;
         struct se_lun_acl *lacl;
@@ -784,9 +779,9 @@ static int core_alua_do_transition_tg_pt(
         old_state = atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state);
         atomic_set(&tg_pt_gp->tg_pt_gp_alua_access_state,
                         ALUA_ACCESS_STATE_TRANSITION);
-        tg_pt_gp->tg_pt_gp_alua_access_status = (explict) ?
-                                ALUA_STATUS_ALTERED_BY_EXPLICT_STPG :
-                                ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA;
+        tg_pt_gp->tg_pt_gp_alua_access_status = (explicit) ?
+                                ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG :
+                                ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA;
         /*
          * Check for the optional ALUA primary state transition delay
          */
@@ -802,7 +797,7 @@ static int core_alua_do_transition_tg_pt(
                  * change, a device server shall establish a unit attention
                  * condition for the initiator port associated with every I_T
                  * nexus with the additional sense code set to ASYMMETRIC
-                 * ACCESS STATE CHAGED.
+                 * ACCESS STATE CHANGED.
                  *
                  * After an explicit target port asymmetric access state
                  * change, a device server shall establish a unit attention
@@ -821,12 +816,12 @@ static int core_alua_do_transition_tg_pt(
                         lacl = se_deve->se_lun_acl;
                         /*
                          * se_deve->se_lun_acl pointer may be NULL for a
-                         * entry created without explict Node+MappedLUN ACLs
+                         * entry created without explicit Node+MappedLUN ACLs
                          */
                         if (!lacl)
                                 continue;
 
-                        if (explict &&
+                        if (explicit &&
                            (nacl != NULL) && (nacl == lacl->se_lun_nacl) &&
                            (l_port != NULL) && (l_port == port))
                                 continue;
@@ -866,8 +861,8 @@ static int core_alua_do_transition_tg_pt(
         atomic_set(&tg_pt_gp->tg_pt_gp_alua_access_state, new_state);
 
         pr_debug("Successful %s ALUA transition TG PT Group: %s ID: %hu"
-                " from primary access state %s to %s\n", (explict) ? "explict" :
-                "implict", config_item_name(&tg_pt_gp->tg_pt_gp_group.cg_item),
+                " from primary access state %s to %s\n", (explicit) ? "explicit" :
+                "implicit", config_item_name(&tg_pt_gp->tg_pt_gp_group.cg_item),
                 tg_pt_gp->tg_pt_gp_id, core_alua_dump_state(old_state),
                 core_alua_dump_state(new_state));
 
@@ -880,7 +875,7 @@ int core_alua_do_port_transition(
         struct se_port *l_port,
         struct se_node_acl *l_nacl,
         int new_state,
-        int explict)
+        int explicit)
 {
         struct se_device *dev;
         struct se_port *port;
@@ -917,7 +912,7 @@ int core_alua_do_port_transition(
                  * success.
                  */
                 core_alua_do_transition_tg_pt(l_tg_pt_gp, l_port, l_nacl,
-                                        md_buf, new_state, explict);
+                                        md_buf, new_state, explicit);
                 atomic_dec(&lu_gp->lu_gp_ref_cnt);
                 smp_mb__after_atomic_dec();
                 kfree(md_buf);
@@ -946,7 +941,7 @@ int core_alua_do_port_transition(
                                 continue;
                         /*
                          * If the target behavior port asymmetric access state
-                         * is changed for any target port group accessiable via
+                         * is changed for any target port group accessible via
                          * a logical unit within a LU group, the target port
                          * behavior group asymmetric access states for the same
                          * target port group accessible via other logical units
@@ -970,7 +965,7 @@ int core_alua_do_port_transition(
                          * success.
                          */
                         core_alua_do_transition_tg_pt(tg_pt_gp, port,
-                                        nacl, md_buf, new_state, explict);
+                                        nacl, md_buf, new_state, explicit);
 
                         spin_lock(&dev->t10_alua.tg_pt_gps_lock);
                         atomic_dec(&tg_pt_gp->tg_pt_gp_ref_cnt);
@@ -987,7 +982,7 @@ int core_alua_do_port_transition(
         pr_debug("Successfully processed LU Group: %s all ALUA TG PT"
                 " Group IDs: %hu %s transition to primary state: %s\n",
                 config_item_name(&lu_gp->lu_gp_group.cg_item),
-                l_tg_pt_gp->tg_pt_gp_id, (explict) ? "explict" : "implict",
+                l_tg_pt_gp->tg_pt_gp_id, (explicit) ? "explicit" : "implicit",
                 core_alua_dump_state(new_state));
 
         atomic_dec(&lu_gp->lu_gp_ref_cnt);
@@ -1034,7 +1029,7 @@ static int core_alua_update_tpg_secondary_metadata(
 static int core_alua_set_tg_pt_secondary_state(
         struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem,
         struct se_port *port,
-        int explict,
+        int explicit,
         int offline)
 {
         struct t10_alua_tg_pt_gp *tg_pt_gp;
@@ -1061,13 +1056,13 @@ static int core_alua_set_tg_pt_secondary_state(
                 atomic_set(&port->sep_tg_pt_secondary_offline, 0);
 
         md_buf_len = tg_pt_gp->tg_pt_gp_md_buf_len;
-        port->sep_tg_pt_secondary_stat = (explict) ?
-                        ALUA_STATUS_ALTERED_BY_EXPLICT_STPG :
-                        ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA;
+        port->sep_tg_pt_secondary_stat = (explicit) ?
+                        ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG :
+                        ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA;
 
         pr_debug("Successful %s ALUA transition TG PT Group: %s ID: %hu"
-                " to secondary access state: %s\n", (explict) ? "explict" :
-                "implict", config_item_name(&tg_pt_gp->tg_pt_gp_group.cg_item),
+                " to secondary access state: %s\n", (explicit) ? "explicit" :
+                "implicit", config_item_name(&tg_pt_gp->tg_pt_gp_group.cg_item),
                 tg_pt_gp->tg_pt_gp_id, (offline) ? "OFFLINE" : "ONLINE");
 
         spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
@@ -1232,7 +1227,7 @@ void core_alua_free_lu_gp(struct t10_alua_lu_gp *lu_gp)
                  * struct se_device is released via core_alua_free_lu_gp_mem().
                  *
                  * If the passed lu_gp does NOT match the default_lu_gp, assume
-                 * we want to re-assocate a given lu_gp_mem with default_lu_gp.
+                 * we want to re-associate a given lu_gp_mem with default_lu_gp.
                  */
                 spin_lock(&lu_gp_mem->lu_gp_mem_lock);
                 if (lu_gp != default_lu_gp)
@@ -1354,18 +1349,25 @@ struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp(struct se_device *dev,
         tg_pt_gp->tg_pt_gp_dev = dev;
         tg_pt_gp->tg_pt_gp_md_buf_len = ALUA_MD_BUF_LEN;
         atomic_set(&tg_pt_gp->tg_pt_gp_alua_access_state,
-                ALUA_ACCESS_STATE_ACTIVE_OPTMIZED);
+                ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED);
         /*
-         * Enable both explict and implict ALUA support by default
+         * Enable both explicit and implicit ALUA support by default
          */
         tg_pt_gp->tg_pt_gp_alua_access_type =
-                        TPGS_EXPLICT_ALUA | TPGS_IMPLICT_ALUA;
+                        TPGS_EXPLICIT_ALUA | TPGS_IMPLICIT_ALUA;
         /*
          * Set the default Active/NonOptimized Delay in milliseconds
          */
         tg_pt_gp->tg_pt_gp_nonop_delay_msecs = ALUA_DEFAULT_NONOP_DELAY_MSECS;
         tg_pt_gp->tg_pt_gp_trans_delay_msecs = ALUA_DEFAULT_TRANS_DELAY_MSECS;
-        tg_pt_gp->tg_pt_gp_implict_trans_secs = ALUA_DEFAULT_IMPLICT_TRANS_SECS;
+        tg_pt_gp->tg_pt_gp_implicit_trans_secs = ALUA_DEFAULT_IMPLICIT_TRANS_SECS;
+
+        /*
+         * Enable all supported states
+         */
+        tg_pt_gp->tg_pt_gp_alua_supported_states =
+            ALUA_T_SUP | ALUA_O_SUP |
+            ALUA_U_SUP | ALUA_S_SUP | ALUA_AN_SUP | ALUA_AO_SUP;
 
         if (def_group) {
                 spin_lock(&dev->t10_alua.tg_pt_gps_lock);
@@ -1465,7 +1467,7 @@ void core_alua_free_tg_pt_gp(
          * been called from target_core_alua_drop_tg_pt_gp().
          *
          * Here we remove *tg_pt_gp from the global list so that
-         * no assications *OR* explict ALUA via SET_TARGET_PORT_GROUPS
+         * no associations *OR* explicit ALUA via SET_TARGET_PORT_GROUPS
          * can be made while we are releasing struct t10_alua_tg_pt_gp.
          */
         spin_lock(&dev->t10_alua.tg_pt_gps_lock);
@@ -1501,7 +1503,7 @@ void core_alua_free_tg_pt_gp(
                  * core_alua_free_tg_pt_gp_mem().
                  *
                  * If the passed tg_pt_gp does NOT match the default_tg_pt_gp,
-                 * assume we want to re-assocate a given tg_pt_gp_mem with
+                 * assume we want to re-associate a given tg_pt_gp_mem with
                  * default_tg_pt_gp.
                  */
                 spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
@@ -1740,13 +1742,13 @@ ssize_t core_alua_show_access_type(
         struct t10_alua_tg_pt_gp *tg_pt_gp,
         char *page)
 {
-        if ((tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICT_ALUA) &&
-            (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA))
-                return sprintf(page, "Implict and Explict\n");
-        else if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)
-                return sprintf(page, "Implict\n");
-        else if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICT_ALUA)
-                return sprintf(page, "Explict\n");
+        if ((tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA) &&
+            (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA))
+                return sprintf(page, "Implicit and Explicit\n");
+        else if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)
+                return sprintf(page, "Implicit\n");
+        else if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA)
+                return sprintf(page, "Explicit\n");
         else
                 return sprintf(page, "None\n");
 }
@@ -1771,11 +1773,11 @@ ssize_t core_alua_store_access_type(
         }
         if (tmp == 3)
                 tg_pt_gp->tg_pt_gp_alua_access_type =
-                        TPGS_IMPLICT_ALUA | TPGS_EXPLICT_ALUA;
+                        TPGS_IMPLICIT_ALUA | TPGS_EXPLICIT_ALUA;
         else if (tmp == 2)
-                tg_pt_gp->tg_pt_gp_alua_access_type = TPGS_EXPLICT_ALUA;
+                tg_pt_gp->tg_pt_gp_alua_access_type = TPGS_EXPLICIT_ALUA;
         else if (tmp == 1)
-                tg_pt_gp->tg_pt_gp_alua_access_type = TPGS_IMPLICT_ALUA;
+                tg_pt_gp->tg_pt_gp_alua_access_type = TPGS_IMPLICIT_ALUA;
         else
                 tg_pt_gp->tg_pt_gp_alua_access_type = 0;
 
@@ -1844,14 +1846,14 @@ ssize_t core_alua_store_trans_delay_msecs(
         return count;
 }
 
-ssize_t core_alua_show_implict_trans_secs(
+ssize_t core_alua_show_implicit_trans_secs(
         struct t10_alua_tg_pt_gp *tg_pt_gp,
         char *page)
 {
-        return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_implict_trans_secs);
+        return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_implicit_trans_secs);
 }
 
-ssize_t core_alua_store_implict_trans_secs(
+ssize_t core_alua_store_implicit_trans_secs(
         struct t10_alua_tg_pt_gp *tg_pt_gp,
         const char *page,
         size_t count)
@@ -1861,16 +1863,16 @@ ssize_t core_alua_store_implict_trans_secs(
 
         ret = kstrtoul(page, 0, &tmp);
         if (ret < 0) {
-                pr_err("Unable to extract implict_trans_secs\n");
+                pr_err("Unable to extract implicit_trans_secs\n");
                 return ret;
         }
-        if (tmp > ALUA_MAX_IMPLICT_TRANS_SECS) {
-                pr_err("Passed implict_trans_secs: %lu, exceeds"
-                        " ALUA_MAX_IMPLICT_TRANS_SECS: %d\n", tmp,
-                        ALUA_MAX_IMPLICT_TRANS_SECS);
+        if (tmp > ALUA_MAX_IMPLICIT_TRANS_SECS) {
+                pr_err("Passed implicit_trans_secs: %lu, exceeds"
+                        " ALUA_MAX_IMPLICIT_TRANS_SECS: %d\n", tmp,
+                        ALUA_MAX_IMPLICIT_TRANS_SECS);
                 return  -EINVAL;
         }
-        tg_pt_gp->tg_pt_gp_implict_trans_secs = (int)tmp;
+        tg_pt_gp->tg_pt_gp_implicit_trans_secs = (int)tmp;
 
         return count;
 }
@@ -1970,8 +1972,8 @@ ssize_t core_alua_store_secondary_status(
                 return ret;
         }
         if ((tmp != ALUA_STATUS_NONE) &&
-            (tmp != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) &&
-            (tmp != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) {
+            (tmp != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) &&
+            (tmp != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) {
                 pr_err("Illegal value for alua_tg_pt_status: %lu\n",
                                 tmp);
                 return -EINVAL;
diff --git a/drivers/target/target_core_alua.h b/drivers/target/target_core_alua.h
index e539c3e7f4ad..88e2e835f14a 100644
--- a/drivers/target/target_core_alua.h
+++ b/drivers/target/target_core_alua.h
@@ -7,15 +7,15 @@
  * from spc4r17 section 6.4.2 Table 135
  */
 #define TPGS_NO_ALUA                            0x00
-#define TPGS_IMPLICT_ALUA                       0x10
-#define TPGS_EXPLICT_ALUA                       0x20
+#define TPGS_IMPLICIT_ALUA                      0x10
+#define TPGS_EXPLICIT_ALUA                      0x20
 
 /*
  * ASYMMETRIC ACCESS STATE field
  *
  * from spc4r17 section 6.27 Table 245
  */
-#define ALUA_ACCESS_STATE_ACTIVE_OPTMIZED       0x0
+#define ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED      0x0
 #define ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED  0x1
 #define ALUA_ACCESS_STATE_STANDBY               0x2
 #define ALUA_ACCESS_STATE_UNAVAILABLE           0x3
@@ -23,13 +23,24 @@
 #define ALUA_ACCESS_STATE_TRANSITION            0xf
 
 /*
+ * from spc4r36j section 6.37 Table 306
+ */
+#define ALUA_T_SUP              0x80
+#define ALUA_O_SUP              0x40
+#define ALUA_LBD_SUP            0x10
+#define ALUA_U_SUP              0x08
+#define ALUA_S_SUP              0x04
+#define ALUA_AN_SUP             0x02
+#define ALUA_AO_SUP             0x01
+
+/*
  * REPORT_TARGET_PORT_GROUP STATUS CODE
  *
  * from spc4r17 section 6.27 Table 246
  */
 #define ALUA_STATUS_NONE                                0x00
-#define ALUA_STATUS_ALTERED_BY_EXPLICT_STPG             0x01
-#define ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA             0x02
+#define ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG            0x01
+#define ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA            0x02
 
 /*
  * From spc4r17, Table D.1: ASC and ASCQ Assignement
@@ -46,17 +57,17 @@
 #define ALUA_DEFAULT_NONOP_DELAY_MSECS                  100
 #define ALUA_MAX_NONOP_DELAY_MSECS                      10000 /* 10 seconds */
 /*
- * Used for implict and explict ALUA transitional delay, that is disabled
+ * Used for implicit and explicit ALUA transitional delay, that is disabled
  * by default, and is intended to be used for debugging client side ALUA code.
  */
 #define ALUA_DEFAULT_TRANS_DELAY_MSECS                  0
 #define ALUA_MAX_TRANS_DELAY_MSECS                      30000 /* 30 seconds */
 /*
- * Used for the recommended application client implict transition timeout
+ * Used for the recommended application client implicit transition timeout
  * in seconds, returned by the REPORT_TARGET_PORT_GROUPS w/ extended header.
  */
-#define ALUA_DEFAULT_IMPLICT_TRANS_SECS                 0
-#define ALUA_MAX_IMPLICT_TRANS_SECS                     255
+#define ALUA_DEFAULT_IMPLICIT_TRANS_SECS                        0
+#define ALUA_MAX_IMPLICIT_TRANS_SECS                    255
 /*
  * Used by core_alua_update_tpg_primary_metadata() and
  * core_alua_update_tpg_secondary_metadata()
@@ -113,9 +124,9 @@ extern ssize_t core_alua_show_trans_delay_msecs(struct t10_alua_tg_pt_gp *,
                                         char *);
 extern ssize_t core_alua_store_trans_delay_msecs(struct t10_alua_tg_pt_gp *,
                                         const char *, size_t);
-extern ssize_t core_alua_show_implict_trans_secs(struct t10_alua_tg_pt_gp *,
+extern ssize_t core_alua_show_implicit_trans_secs(struct t10_alua_tg_pt_gp *,
                                         char *);
-extern ssize_t core_alua_store_implict_trans_secs(struct t10_alua_tg_pt_gp *,
+extern ssize_t core_alua_store_implicit_trans_secs(struct t10_alua_tg_pt_gp *,
                                         const char *, size_t);
 extern ssize_t core_alua_show_preferred_bit(struct t10_alua_tg_pt_gp *,
                                         char *);
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 82e81c542e43..272755d03e5a 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -177,16 +177,16 @@ static struct config_group *target_core_register_fabric(
          * struct target_fabric_configfs *tf will contain a usage reference.
          */
         pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n",
-                        &TF_CIT_TMPL(tf)->tfc_wwn_cit);
+                        &tf->tf_cit_tmpl.tfc_wwn_cit);
 
         tf->tf_group.default_groups = tf->tf_default_groups;
         tf->tf_group.default_groups[0] = &tf->tf_disc_group;
         tf->tf_group.default_groups[1] = NULL;
 
         config_group_init_type_name(&tf->tf_group, name,
-                        &TF_CIT_TMPL(tf)->tfc_wwn_cit);
+                        &tf->tf_cit_tmpl.tfc_wwn_cit);
         config_group_init_type_name(&tf->tf_disc_group, "discovery_auth",
-                        &TF_CIT_TMPL(tf)->tfc_discovery_cit);
+                        &tf->tf_cit_tmpl.tfc_discovery_cit);
 
         pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:"
                         " %s\n", tf->tf_group.cg_item.ci_name);
@@ -2036,7 +2036,7 @@ static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state(
         int new_state, ret;
 
         if (!tg_pt_gp->tg_pt_gp_valid_id) {
-                pr_err("Unable to do implict ALUA on non valid"
+                pr_err("Unable to do implicit ALUA on non valid"
                         " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id);
                 return -EINVAL;
         }
@@ -2049,9 +2049,9 @@ static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state(
         }
         new_state = (int)tmp;
 
-        if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) {
-                pr_err("Unable to process implict configfs ALUA"
-                        " transition while TPGS_IMPLICT_ALUA is disabled\n");
+        if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) {
+                pr_err("Unable to process implicit configfs ALUA"
+                        " transition while TPGS_IMPLICIT_ALUA is disabled\n");
                 return -EINVAL;
         }
 
@@ -2097,8 +2097,8 @@ static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status(
         new_status = (int)tmp;
 
         if ((new_status != ALUA_STATUS_NONE) &&
-            (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) &&
-            (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) {
+            (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) &&
+            (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) {
                 pr_err("Illegal ALUA access status: 0x%02x\n",
                                 new_status);
                 return -EINVAL;
@@ -2131,6 +2131,90 @@ static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type(
 SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR);
 
 /*
+ * alua_supported_states
+ */
+
+#define SE_DEV_ALUA_SUPPORT_STATE_SHOW(_name, _var, _bit)               \
+static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_support_##_name( \
+        struct t10_alua_tg_pt_gp *t, char *p)                           \
+{                                                                       \
+        return sprintf(p, "%d\n", !!(t->_var & _bit));                  \
+}
+
+#define SE_DEV_ALUA_SUPPORT_STATE_STORE(_name, _var, _bit)              \
+static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_support_##_name(\
+        struct t10_alua_tg_pt_gp *t, const char *p, size_t c)           \
+{                                                                       \
+        unsigned long tmp;                                              \
+        int ret;                                                        \
+                                                                        \
+        if (!t->tg_pt_gp_valid_id) {                                    \
+                pr_err("Unable to do set ##_name ALUA state on non"     \
+                       " valid tg_pt_gp ID: %hu\n",                     \
+                       t->tg_pt_gp_valid_id);                           \
+                return -EINVAL;                                         \
+        }                                                               \
+                                                                        \
+        ret = kstrtoul(p, 0, &tmp);                                     \
+        if (ret < 0) {                                                  \
+                pr_err("Invalid value '%s', must be '0' or '1'\n", p);  \
+                return -EINVAL;                                         \
+        }                                                               \
+        if (tmp > 1) {                                                  \
+                pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \
+                return -EINVAL;                                         \
+        }                                                               \
+        if (!tmp)                                                       \
+                t->_var |= _bit;                                        \
+        else                                                            \
+                t->_var &= ~_bit;                                       \
+                                                                        \
+        return c;                                                       \
+}
+
+SE_DEV_ALUA_SUPPORT_STATE_SHOW(transitioning,
+                               tg_pt_gp_alua_supported_states, ALUA_T_SUP);
+SE_DEV_ALUA_SUPPORT_STATE_STORE(transitioning,
+                                tg_pt_gp_alua_supported_states, ALUA_T_SUP);
+SE_DEV_ALUA_TG_PT_ATTR(alua_support_transitioning, S_IRUGO | S_IWUSR);
+
+SE_DEV_ALUA_SUPPORT_STATE_SHOW(offline,
+                               tg_pt_gp_alua_supported_states, ALUA_O_SUP);
+SE_DEV_ALUA_SUPPORT_STATE_STORE(offline,
+                                tg_pt_gp_alua_supported_states, ALUA_O_SUP);
+SE_DEV_ALUA_TG_PT_ATTR(alua_support_offline, S_IRUGO | S_IWUSR);
+
+SE_DEV_ALUA_SUPPORT_STATE_SHOW(lba_dependent,
+                               tg_pt_gp_alua_supported_states, ALUA_LBD_SUP);
+SE_DEV_ALUA_SUPPORT_STATE_STORE(lba_dependent,
+                                tg_pt_gp_alua_supported_states, ALUA_LBD_SUP);
+SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO | S_IWUSR);
+
+SE_DEV_ALUA_SUPPORT_STATE_SHOW(unavailable,
+                               tg_pt_gp_alua_supported_states, ALUA_U_SUP);
+SE_DEV_ALUA_SUPPORT_STATE_STORE(unavailable,
+                                tg_pt_gp_alua_supported_states, ALUA_U_SUP);
+SE_DEV_ALUA_TG_PT_ATTR(alua_support_unavailable, S_IRUGO | S_IWUSR);
+
+SE_DEV_ALUA_SUPPORT_STATE_SHOW(standby,
+                               tg_pt_gp_alua_supported_states, ALUA_S_SUP);
+SE_DEV_ALUA_SUPPORT_STATE_STORE(standby,
+                                tg_pt_gp_alua_supported_states, ALUA_S_SUP);
+SE_DEV_ALUA_TG_PT_ATTR(alua_support_standby, S_IRUGO | S_IWUSR);
+
+SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_optimized,
+                               tg_pt_gp_alua_supported_states, ALUA_AO_SUP);
+SE_DEV_ALUA_SUPPORT_STATE_STORE(active_optimized,
+                                tg_pt_gp_alua_supported_states, ALUA_AO_SUP);
+SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_optimized, S_IRUGO | S_IWUSR);
+
+SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_nonoptimized,
+                               tg_pt_gp_alua_supported_states, ALUA_AN_SUP);
+SE_DEV_ALUA_SUPPORT_STATE_STORE(active_nonoptimized,
+                                tg_pt_gp_alua_supported_states, ALUA_AN_SUP);
+SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_nonoptimized, S_IRUGO | S_IWUSR);
+
+/*
  * alua_write_metadata
  */
 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata(
@@ -2210,24 +2294,24 @@ static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs(
 SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR);
 
 /*
- * implict_trans_secs
+ * implicit_trans_secs
  */
-static ssize_t target_core_alua_tg_pt_gp_show_attr_implict_trans_secs(
+static ssize_t target_core_alua_tg_pt_gp_show_attr_implicit_trans_secs(
         struct t10_alua_tg_pt_gp *tg_pt_gp,
         char *page)
 {
-        return core_alua_show_implict_trans_secs(tg_pt_gp, page);
+        return core_alua_show_implicit_trans_secs(tg_pt_gp, page);
 }
 
-static ssize_t target_core_alua_tg_pt_gp_store_attr_implict_trans_secs(
+static ssize_t target_core_alua_tg_pt_gp_store_attr_implicit_trans_secs(
         struct t10_alua_tg_pt_gp *tg_pt_gp,
         const char *page,
         size_t count)
 {
-        return core_alua_store_implict_trans_secs(tg_pt_gp, page, count);
+        return core_alua_store_implicit_trans_secs(tg_pt_gp, page, count);
 }
 
-SE_DEV_ALUA_TG_PT_ATTR(implict_trans_secs, S_IRUGO | S_IWUSR);
+SE_DEV_ALUA_TG_PT_ATTR(implicit_trans_secs, S_IRUGO | S_IWUSR);
 
 /*
  * preferred
@@ -2350,10 +2434,17 @@ static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = {
         &target_core_alua_tg_pt_gp_alua_access_state.attr,
         &target_core_alua_tg_pt_gp_alua_access_status.attr,
         &target_core_alua_tg_pt_gp_alua_access_type.attr,
+        &target_core_alua_tg_pt_gp_alua_support_transitioning.attr,
+        &target_core_alua_tg_pt_gp_alua_support_offline.attr,
+        &target_core_alua_tg_pt_gp_alua_support_lba_dependent.attr,
+        &target_core_alua_tg_pt_gp_alua_support_unavailable.attr,
+        &target_core_alua_tg_pt_gp_alua_support_standby.attr,
+        &target_core_alua_tg_pt_gp_alua_support_active_nonoptimized.attr,
+        &target_core_alua_tg_pt_gp_alua_support_active_optimized.attr,
         &target_core_alua_tg_pt_gp_alua_write_metadata.attr,
         &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr,
         &target_core_alua_tg_pt_gp_trans_delay_msecs.attr,
-        &target_core_alua_tg_pt_gp_implict_trans_secs.attr,
+        &target_core_alua_tg_pt_gp_implicit_trans_secs.attr,
         &target_core_alua_tg_pt_gp_preferred.attr,
         &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr,
         &target_core_alua_tg_pt_gp_members.attr,
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index d90dbb0f1a69..207b340498a3 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -92,6 +92,9 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
                 se_cmd->pr_res_key = deve->pr_res_key;
                 se_cmd->orig_fe_lun = unpacked_lun;
                 se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
+
+                percpu_ref_get(&se_lun->lun_ref);
+                se_cmd->lun_ref_active = true;
         }
         spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags);
 
@@ -119,24 +122,20 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
                 se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0;
                 se_cmd->orig_fe_lun = 0;
                 se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
+
+                percpu_ref_get(&se_lun->lun_ref);
+                se_cmd->lun_ref_active = true;
         }
 
         /* Directly associate cmd with se_dev */
         se_cmd->se_dev = se_lun->lun_se_dev;
 
-        /* TODO: get rid of this and use atomics for stats */
         dev = se_lun->lun_se_dev;
-        spin_lock_irqsave(&dev->stats_lock, flags);
-        dev->num_cmds++;
+        atomic_long_inc(&dev->num_cmds);
         if (se_cmd->data_direction == DMA_TO_DEVICE)
-                dev->write_bytes += se_cmd->data_length;
+                atomic_long_add(se_cmd->data_length, &dev->write_bytes);
         else if (se_cmd->data_direction == DMA_FROM_DEVICE)
-                dev->read_bytes += se_cmd->data_length;
-        spin_unlock_irqrestore(&dev->stats_lock, flags);
-
-        spin_lock_irqsave(&se_lun->lun_cmd_lock, flags);
-        list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list);
-        spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags);
+                atomic_long_add(se_cmd->data_length, &dev->read_bytes);
 
         return 0;
 }
@@ -314,14 +313,14 @@ int core_enable_device_list_for_node(
         deve = nacl->device_list[mapped_lun];
 
         /*
-         * Check if the call is handling demo mode -> explict LUN ACL
+         * Check if the call is handling demo mode -> explicit LUN ACL
          * transition.  This transition must be for the same struct se_lun
          * + mapped_lun that was setup in demo mode..
          */
         if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) {
                 if (deve->se_lun_acl != NULL) {
                         pr_err("struct se_dev_entry->se_lun_acl"
-                               " already set for demo mode -> explict"
+                               " already set for demo mode -> explicit"
                                " LUN ACL transition\n");
                         spin_unlock_irq(&nacl->device_list_lock);
                         return -EINVAL;
@@ -329,7 +328,7 @@ int core_enable_device_list_for_node(
                 if (deve->se_lun != lun) {
                         pr_err("struct se_dev_entry->se_lun does"
                                " match passed struct se_lun for demo mode"
-                               " -> explict LUN ACL transition\n");
+                               " -> explicit LUN ACL transition\n");
                         spin_unlock_irq(&nacl->device_list_lock);
                         return -EINVAL;
                 }
@@ -1407,6 +1406,7 @@ static void scsi_dump_inquiry(struct se_device *dev)
 struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
 {
         struct se_device *dev;
+        struct se_lun *xcopy_lun;
 
         dev = hba->transport->alloc_device(hba, name);
         if (!dev)
@@ -1423,7 +1423,6 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
         INIT_LIST_HEAD(&dev->state_list);
         INIT_LIST_HEAD(&dev->qf_cmd_list);
         INIT_LIST_HEAD(&dev->g_dev_node);
-        spin_lock_init(&dev->stats_lock);
         spin_lock_init(&dev->execute_task_lock);
         spin_lock_init(&dev->delayed_cmd_lock);
         spin_lock_init(&dev->dev_reservation_lock);
@@ -1469,6 +1468,14 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
         dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS;
         dev->dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS;
 
+        xcopy_lun = &dev->xcopy_lun;
+        xcopy_lun->lun_se_dev = dev;
+        init_completion(&xcopy_lun->lun_shutdown_comp);
+        INIT_LIST_HEAD(&xcopy_lun->lun_acl_list);
+        spin_lock_init(&xcopy_lun->lun_acl_lock);
+        spin_lock_init(&xcopy_lun->lun_sep_lock);
+        init_completion(&xcopy_lun->lun_ref_comp);
+
         return dev;
 }
 
diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c
index 3503996d7d10..dae2ad6a669e 100644
--- a/drivers/target/target_core_fabric_configfs.c
+++ b/drivers/target/target_core_fabric_configfs.c
@@ -385,9 +385,9 @@ static struct config_group *target_fabric_make_mappedlun(
         }
 
         config_group_init_type_name(&lacl->se_lun_group, name,
-                        &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_mappedlun_cit);
         config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
-                        "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_stat_cit);
+                        "statistics", &tf->tf_cit_tmpl.tfc_tpg_mappedlun_stat_cit);
         lacl_cg->default_groups[0] = &lacl->ml_stat_grps.stat_group;
         lacl_cg->default_groups[1] = NULL;
 
@@ -504,16 +504,16 @@ static struct config_group *target_fabric_make_nodeacl(
         nacl_cg->default_groups[4] = NULL;
 
         config_group_init_type_name(&se_nacl->acl_group, name,
-                        &TF_CIT_TMPL(tf)->tfc_tpg_nacl_base_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_nacl_base_cit);
         config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
-                        &TF_CIT_TMPL(tf)->tfc_tpg_nacl_attrib_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit);
         config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
-                        &TF_CIT_TMPL(tf)->tfc_tpg_nacl_auth_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_nacl_auth_cit);
         config_group_init_type_name(&se_nacl->acl_param_group, "param",
-                        &TF_CIT_TMPL(tf)->tfc_tpg_nacl_param_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_nacl_param_cit);
         config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
                         "fabric_statistics",
-                        &TF_CIT_TMPL(tf)->tfc_tpg_nacl_stat_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_nacl_stat_cit);
 
         return &se_nacl->acl_group;
 }
@@ -595,7 +595,7 @@ static struct config_group *target_fabric_make_np(
 
         se_tpg_np->tpg_np_parent = se_tpg;
         config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
-                        &TF_CIT_TMPL(tf)->tfc_tpg_np_base_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_np_base_cit);
 
         return &se_tpg_np->tpg_np_group;
 }
@@ -899,9 +899,9 @@ static struct config_group *target_fabric_make_lun(
         }
 
         config_group_init_type_name(&lun->lun_group, name,
-                        &TF_CIT_TMPL(tf)->tfc_tpg_port_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_port_cit);
         config_group_init_type_name(&lun->port_stat_grps.stat_group,
-                        "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_port_stat_cit);
+                        "statistics", &tf->tf_cit_tmpl.tfc_tpg_port_stat_cit);
         lun_cg->default_groups[0] = &lun->port_stat_grps.stat_group;
         lun_cg->default_groups[1] = NULL;
 
@@ -1056,19 +1056,19 @@ static struct config_group *target_fabric_make_tpg(
         se_tpg->tpg_group.default_groups[6] = NULL;
 
         config_group_init_type_name(&se_tpg->tpg_group, name,
-                        &TF_CIT_TMPL(tf)->tfc_tpg_base_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_base_cit);
         config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
-                        &TF_CIT_TMPL(tf)->tfc_tpg_lun_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_lun_cit);
         config_group_init_type_name(&se_tpg->tpg_np_group, "np",
-                        &TF_CIT_TMPL(tf)->tfc_tpg_np_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_np_cit);
         config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
-                        &TF_CIT_TMPL(tf)->tfc_tpg_nacl_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_nacl_cit);
         config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
-                        &TF_CIT_TMPL(tf)->tfc_tpg_attrib_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_attrib_cit);
         config_group_init_type_name(&se_tpg->tpg_auth_group, "auth",
-                        &TF_CIT_TMPL(tf)->tfc_tpg_auth_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_auth_cit);
         config_group_init_type_name(&se_tpg->tpg_param_group, "param",
-                        &TF_CIT_TMPL(tf)->tfc_tpg_param_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_param_cit);
 
         return &se_tpg->tpg_group;
 }
@@ -1155,9 +1155,9 @@ static struct config_group *target_fabric_make_wwn(
         wwn->wwn_group.default_groups[1] = NULL;
 
         config_group_init_type_name(&wwn->wwn_group, name,
-                        &TF_CIT_TMPL(tf)->tfc_tpg_cit);
+                        &tf->tf_cit_tmpl.tfc_tpg_cit);
         config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
-                        &TF_CIT_TMPL(tf)->tfc_wwn_fabric_stats_cit);
+                        &tf->tf_cit_tmpl.tfc_wwn_fabric_stats_cit);
 
         return &wwn->wwn_group;
 }
diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index b662f89dedac..0e34cda3271e 100644
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -562,7 +562,7 @@ fd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
         } else {
                 ret = fd_do_rw(cmd, sgl, sgl_nents, 1);
                 /*
-                 * Perform implict vfs_fsync_range() for fd_do_writev() ops
+                 * Perform implicit vfs_fsync_range() for fd_do_writev() ops
                  * for SCSI WRITEs with Forced Unit Access (FUA) set.
                  * Allow this to happen independent of WCE=0 setting.
                  */
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index b9a3394fe479..c87959f12760 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -710,6 +710,45 @@ static sector_t iblock_get_blocks(struct se_device *dev)
         return iblock_emulate_read_cap_with_block_size(dev, bd, q);
 }
 
+static sector_t iblock_get_alignment_offset_lbas(struct se_device *dev)
+{
+        struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
+        struct block_device *bd = ib_dev->ibd_bd;
+        int ret;
+
+        ret = bdev_alignment_offset(bd);
+        if (ret == -1)
+                return 0;
+
+        /* convert offset-bytes to offset-lbas */
+        return ret / bdev_logical_block_size(bd);
+}
+
+static unsigned int iblock_get_lbppbe(struct se_device *dev)
+{
+        struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
+        struct block_device *bd = ib_dev->ibd_bd;
+        int logs_per_phys = bdev_physical_block_size(bd) / bdev_logical_block_size(bd);
+
+        return ilog2(logs_per_phys);
+}
+
+static unsigned int iblock_get_io_min(struct se_device *dev)
+{
+        struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
+        struct block_device *bd = ib_dev->ibd_bd;
+
+        return bdev_io_min(bd);
+}
+
+static unsigned int iblock_get_io_opt(struct se_device *dev)
+{
+        struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
+        struct block_device *bd = ib_dev->ibd_bd;
+
+        return bdev_io_opt(bd);
+}
+
 static struct sbc_ops iblock_sbc_ops = {
         .execute_rw             = iblock_execute_rw,
         .execute_sync_cache     = iblock_execute_sync_cache,
@@ -749,6 +788,10 @@ static struct se_subsystem_api iblock_template = {
         .show_configfs_dev_params = iblock_show_configfs_dev_params,
         .get_device_type        = sbc_get_device_type,
         .get_blocks             = iblock_get_blocks,
+        .get_alignment_offset_lbas = iblock_get_alignment_offset_lbas,
+        .get_lbppbe             = iblock_get_lbppbe,
+        .get_io_min             = iblock_get_io_min,
+        .get_io_opt             = iblock_get_io_opt,
         .get_write_cache        = iblock_get_write_cache,
 };
 
diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h
index 579128abe3f5..47b63b094cdc 100644
--- a/drivers/target/target_core_internal.h
+++ b/drivers/target/target_core_internal.h
@@ -75,8 +75,6 @@ extern struct se_device *g_lun0_dev;
 
 struct se_node_acl *__core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
                 const char *);
-struct se_node_acl *core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
-                unsigned char *);
 void    core_tpg_add_node_to_devs(struct se_node_acl *, struct se_portal_group *);
 void    core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *);
 struct se_lun *core_tpg_pre_addlun(struct se_portal_group *, u32);
@@ -102,7 +100,7 @@ int	transport_dump_vpd_assoc(struct t10_vpd *, unsigned char *, int);
 int     transport_dump_vpd_ident_type(struct t10_vpd *, unsigned char *, int);
 int     transport_dump_vpd_ident(struct t10_vpd *, unsigned char *, int);
 bool    target_stop_cmd(struct se_cmd *cmd, unsigned long *flags);
-int     transport_clear_lun_from_sessions(struct se_lun *);
+int     transport_clear_lun_ref(struct se_lun *);
 void    transport_send_task_abort(struct se_cmd *);
 sense_reason_t  target_cmd_size_check(struct se_cmd *cmd, unsigned int size);
 void    target_qf_do_work(struct work_struct *work);
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
index d1ae4c5c3ffd..2f5d77932c80 100644
--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -474,7 +474,7 @@ static int core_scsi3_pr_seq_non_holder(
          * statement.
          */
         if (!ret && !other_cdb) {
-                pr_debug("Allowing explict CDB: 0x%02x for %s"
+                pr_debug("Allowing explicit CDB: 0x%02x for %s"
                         " reservation holder\n", cdb[0],
                         core_scsi3_pr_dump_type(pr_reg_type));
 
@@ -507,7 +507,7 @@ static int core_scsi3_pr_seq_non_holder(
                          */
 
                         if (!registered_nexus) {
-                                pr_debug("Allowing implict CDB: 0x%02x"
+                                pr_debug("Allowing implicit CDB: 0x%02x"
                                         " for %s reservation on unregistered"
                                         " nexus\n", cdb[0],
                                         core_scsi3_pr_dump_type(pr_reg_type));
@@ -522,7 +522,7 @@ static int core_scsi3_pr_seq_non_holder(
                          * allow commands from registered nexuses.
                          */
 
-                        pr_debug("Allowing implict CDB: 0x%02x for %s"
+                        pr_debug("Allowing implicit CDB: 0x%02x for %s"
                                 " reservation\n", cdb[0],
                                 core_scsi3_pr_dump_type(pr_reg_type));
 
@@ -683,7 +683,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration(
                                         alua_port_list) {
                         /*
                          * This pointer will be NULL for demo mode MappedLUNs
-                         * that have not been make explict via a ConfigFS
+                         * that have not been make explicit via a ConfigFS
                          * MappedLUN group for the SCSI Initiator Node ACL.
                          */
                         if (!deve_tmp->se_lun_acl)
@@ -1158,7 +1158,7 @@ static void core_scsi3_put_pr_reg(struct t10_pr_registration *pr_reg)
         smp_mb__after_atomic_dec();
 }
 
-static int core_scsi3_check_implict_release(
+static int core_scsi3_check_implicit_release(
         struct se_device *dev,
         struct t10_pr_registration *pr_reg)
 {
@@ -1174,7 +1174,7 @@ static int core_scsi3_check_implict_release(
         }
         if (pr_res_holder == pr_reg) {
                 /*
-                 * Perform an implict RELEASE if the registration that
+                 * Perform an implicit RELEASE if the registration that
                  * is being released is holding the reservation.
                  *
                  * From spc4r17, section 5.7.11.1:
@@ -1192,7 +1192,7 @@ static int core_scsi3_check_implict_release(
                  * For 'All Registrants' reservation types, all existing
                  * registrations are still processed as reservation holders
                  * in core_scsi3_pr_seq_non_holder() after the initial
-                 * reservation holder is implictly released here.
+                 * reservation holder is implicitly released here.
                  */
         } else if (pr_reg->pr_reg_all_tg_pt &&
                   (!strcmp(pr_res_holder->pr_reg_nacl->initiatorname,
@@ -2125,7 +2125,7 @@ core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key,
                 /*
                  * sa_res_key=0 Unregister Reservation Key for registered I_T Nexus.
                  */
-                pr_holder = core_scsi3_check_implict_release(
+                pr_holder = core_scsi3_check_implicit_release(
                                 cmd->se_dev, pr_reg);
                 if (pr_holder < 0) {
                         ret = TCM_RESERVATION_CONFLICT;
@@ -2402,7 +2402,7 @@ static void __core_scsi3_complete_pro_release(
         struct se_device *dev,
         struct se_node_acl *se_nacl,
         struct t10_pr_registration *pr_reg,
-        int explict)
+        int explicit)
 {
         struct target_core_fabric_ops *tfo = se_nacl->se_tpg->se_tpg_tfo;
         char i_buf[PR_REG_ISID_ID_LEN];
@@ -2416,7 +2416,7 @@ static void __core_scsi3_complete_pro_release(
 
         pr_debug("SPC-3 PR [%s] Service Action: %s RELEASE cleared"
                 " reservation holder TYPE: %s ALL_TG_PT: %d\n",
-                tfo->get_fabric_name(), (explict) ? "explict" : "implict",
+                tfo->get_fabric_name(), (explicit) ? "explicit" : "implicit",
                 core_scsi3_pr_dump_type(pr_reg->pr_res_type),
                 (pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
         pr_debug("SPC-3 PR [%s] RELEASE Node: %s%s\n",
@@ -2692,7 +2692,7 @@ static void __core_scsi3_complete_pro_preempt(
         memset(i_buf, 0, PR_REG_ISID_ID_LEN);
         core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);
         /*
-         * Do an implict RELEASE of the existing reservation.
+         * Do an implicit RELEASE of the existing reservation.
          */
         if (dev->dev_pr_res_holder)
                 __core_scsi3_complete_pro_release(dev, nacl,
@@ -2845,7 +2845,7 @@ core_scsi3_pro_preempt(struct se_cmd *cmd, int type, int scope, u64 res_key,
                                  * 5.7.11.4 Preempting, Table 52 and Figure 7.
                                  *
                                  * For a ZERO SA Reservation key, release
-                                 * all other registrations and do an implict
+                                 * all other registrations and do an implicit
                                  * release of active persistent reservation.
                                  *
                                  * For a non-ZERO SA Reservation key, only
diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c
index 131327ac7f5b..4ffe5f2ec0e9 100644
--- a/drivers/target/target_core_rd.c
+++ b/drivers/target/target_core_rd.c
@@ -27,7 +27,6 @@
 #include <linux/string.h>
 #include <linux/parser.h>
 #include <linux/timer.h>
-#include <linux/blkdev.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <scsi/scsi.h>
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index d9b92b2c524d..52ae54e60105 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -105,12 +105,22 @@ sbc_emulate_readcapacity_16(struct se_cmd *cmd)
         buf[9] = (dev->dev_attrib.block_size >> 16) & 0xff;
         buf[10] = (dev->dev_attrib.block_size >> 8) & 0xff;
         buf[11] = dev->dev_attrib.block_size & 0xff;
+
+        if (dev->transport->get_lbppbe)
+                buf[13] = dev->transport->get_lbppbe(dev) & 0x0f;
+
+        if (dev->transport->get_alignment_offset_lbas) {
+                u16 lalba = dev->transport->get_alignment_offset_lbas(dev);
+                buf[14] = (lalba >> 8) & 0x3f;
+                buf[15] = lalba & 0xff;
+        }
+
         /*
          * Set Thin Provisioning Enable bit following sbc3r22 in section
          * READ CAPACITY (16) byte 14 if emulate_tpu or emulate_tpws is enabled.
          */
         if (dev->dev_attrib.emulate_tpu || dev->dev_attrib.emulate_tpws)
-                buf[14] = 0x80;
+                buf[14] |= 0x80;
 
         rbuf = transport_kmap_data_sg(cmd);
         if (rbuf) {
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index 074539558a54..021c3f4a4f00 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -48,7 +48,7 @@ static void spc_fill_alua_data(struct se_port *port, unsigned char *buf)
         buf[5]  = 0x80;
 
         /*
-         * Set TPGS field for explict and/or implict ALUA access type
+         * Set TPGS field for explicit and/or implicit ALUA access type
          * and opteration.
          *
          * See spc4r17 section 6.4.2 Table 135
@@ -452,6 +452,7 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
         struct se_device *dev = cmd->se_dev;
         u32 max_sectors;
         int have_tp = 0;
+        int opt, min;
 
         /*
          * Following spc3r22 section 6.5.3 Block Limits VPD page, when
@@ -475,7 +476,10 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
         /*
          * Set OPTIMAL TRANSFER LENGTH GRANULARITY
          */
-        put_unaligned_be16(1, &buf[6]);
+        if (dev->transport->get_io_min && (min = dev->transport->get_io_min(dev)))
+                put_unaligned_be16(min / dev->dev_attrib.block_size, &buf[6]);
+        else
+                put_unaligned_be16(1, &buf[6]);
 
         /*
          * Set MAXIMUM TRANSFER LENGTH
@@ -487,7 +491,10 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
         /*
          * Set OPTIMAL TRANSFER LENGTH
          */
-        put_unaligned_be32(dev->dev_attrib.optimal_sectors, &buf[12]);
+        if (dev->transport->get_io_opt && (opt = dev->transport->get_io_opt(dev)))
+                put_unaligned_be32(opt / dev->dev_attrib.block_size, &buf[12]);
+        else
+                put_unaligned_be32(dev->dev_attrib.optimal_sectors, &buf[12]);
 
         /*
          * Exit now if we don't support TP.
@@ -1250,7 +1257,7 @@ spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
                 *size = (cdb[3] << 8) + cdb[4];
 
                 /*
-                 * Do implict HEAD_OF_QUEUE processing for INQUIRY.
+                 * Do implicit HEAD_OF_QUEUE processing for INQUIRY.
                  * See spc4r17 section 5.3
                  */
                 cmd->sam_task_attr = MSG_HEAD_TAG;
@@ -1284,7 +1291,7 @@ spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
                 cmd->execute_cmd = spc_emulate_report_luns;
                 *size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9];
                 /*
-                 * Do implict HEAD_OF_QUEUE processing for REPORT_LUNS
+                 * Do implicit HEAD_OF_QUEUE processing for REPORT_LUNS
                  * See spc4r17 section 5.3
                  */
                 cmd->sam_task_attr = MSG_HEAD_TAG;
diff --git a/drivers/target/target_core_stat.c b/drivers/target/target_core_stat.c
index 9c642e02cba1..03538994d2f7 100644
--- a/drivers/target/target_core_stat.c
+++ b/drivers/target/target_core_stat.c
@@ -32,7 +32,6 @@
 #include <linux/utsname.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
-#include <linux/blkdev.h>
 #include <linux/configfs.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_device.h>
@@ -214,7 +213,8 @@ static ssize_t target_stat_scsi_tgt_dev_show_attr_resets(
         struct se_device *dev =
                 container_of(sgrps, struct se_device, dev_stat_grps);
 
-        return snprintf(page, PAGE_SIZE, "%u\n", dev->num_resets);
+        return snprintf(page, PAGE_SIZE, "%lu\n",
+                        atomic_long_read(&dev->num_resets));
 }
 DEV_STAT_SCSI_TGT_DEV_ATTR_RO(resets);
 
@@ -397,8 +397,8 @@ static ssize_t target_stat_scsi_lu_show_attr_num_cmds(
                 container_of(sgrps, struct se_device, dev_stat_grps);
 
         /* scsiLuNumCommands */
-        return snprintf(page, PAGE_SIZE, "%llu\n",
-                        (unsigned long long)dev->num_cmds);
+        return snprintf(page, PAGE_SIZE, "%lu\n",
+                        atomic_long_read(&dev->num_cmds));
 }
 DEV_STAT_SCSI_LU_ATTR_RO(num_cmds);
 
@@ -409,7 +409,8 @@ static ssize_t target_stat_scsi_lu_show_attr_read_mbytes(
                 container_of(sgrps, struct se_device, dev_stat_grps);
 
         /* scsiLuReadMegaBytes */
-        return snprintf(page, PAGE_SIZE, "%u\n", (u32)(dev->read_bytes >> 20));
+        return snprintf(page, PAGE_SIZE, "%lu\n",
+                        atomic_long_read(&dev->read_bytes) >> 20);
 }
 DEV_STAT_SCSI_LU_ATTR_RO(read_mbytes);
 
@@ -420,7 +421,8 @@ static ssize_t target_stat_scsi_lu_show_attr_write_mbytes(
                 container_of(sgrps, struct se_device, dev_stat_grps);
 
         /* scsiLuWrittenMegaBytes */
-        return snprintf(page, PAGE_SIZE, "%u\n", (u32)(dev->write_bytes >> 20));
+        return snprintf(page, PAGE_SIZE, "%lu\n",
+                        atomic_long_read(&dev->write_bytes) >> 20);
 }
 DEV_STAT_SCSI_LU_ATTR_RO(write_mbytes);
 
@@ -431,7 +433,7 @@ static ssize_t target_stat_scsi_lu_show_attr_resets(
                 container_of(sgrps, struct se_device, dev_stat_grps);
 
         /* scsiLuInResets */
-        return snprintf(page, PAGE_SIZE, "%u\n", dev->num_resets);
+        return snprintf(page, PAGE_SIZE, "%lu\n", atomic_long_read(&dev->num_resets));
 }
 DEV_STAT_SCSI_LU_ATTR_RO(resets);
 
diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
index 250009909d49..70c638f730af 100644
--- a/drivers/target/target_core_tmr.c
+++ b/drivers/target/target_core_tmr.c
@@ -386,9 +386,7 @@ int core_tmr_lun_reset(
                 pr_debug("LUN_RESET: SCSI-2 Released reservation\n");
         }
 
-        spin_lock_irq(&dev->stats_lock);
-        dev->num_resets++;
-        spin_unlock_irq(&dev->stats_lock);
+        atomic_long_inc(&dev->num_resets);
 
         pr_debug("LUN_RESET: %s for [%s] Complete\n",
                         (preempt_and_abort_list) ? "Preempt" : "TMR",
diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index b9a6ec0aa5fe..f697f8baec54 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -116,6 +116,7 @@ struct se_node_acl *core_tpg_get_initiator_node_acl(
 
         return acl;
 }
+EXPORT_SYMBOL(core_tpg_get_initiator_node_acl);
 
 /*      core_tpg_add_node_to_devs():
  *
@@ -633,6 +634,13 @@ int core_tpg_set_initiator_node_tag(
 }
 EXPORT_SYMBOL(core_tpg_set_initiator_node_tag);
 
+static void core_tpg_lun_ref_release(struct percpu_ref *ref)
+{
+        struct se_lun *lun = container_of(ref, struct se_lun, lun_ref);
+
+        complete(&lun->lun_ref_comp);
+}
+
 static int core_tpg_setup_virtual_lun0(struct se_portal_group *se_tpg)
 {
         /* Set in core_dev_setup_virtual_lun0() */
@@ -646,15 +654,20 @@ static int core_tpg_setup_virtual_lun0(struct se_portal_group *se_tpg)
         atomic_set(&lun->lun_acl_count, 0);
         init_completion(&lun->lun_shutdown_comp);
         INIT_LIST_HEAD(&lun->lun_acl_list);
-        INIT_LIST_HEAD(&lun->lun_cmd_list);
         spin_lock_init(&lun->lun_acl_lock);
-        spin_lock_init(&lun->lun_cmd_lock);
         spin_lock_init(&lun->lun_sep_lock);
+        init_completion(&lun->lun_ref_comp);
 
-        ret = core_tpg_post_addlun(se_tpg, lun, lun_access, dev);
+        ret = percpu_ref_init(&lun->lun_ref, core_tpg_lun_ref_release);
         if (ret < 0)
                 return ret;
 
+        ret = core_tpg_post_addlun(se_tpg, lun, lun_access, dev);
+        if (ret < 0) {
+                percpu_ref_cancel_init(&lun->lun_ref);
+                return ret;
+        }
+
         return 0;
 }
 
@@ -691,10 +704,9 @@ int core_tpg_register(
                 atomic_set(&lun->lun_acl_count, 0);
                 init_completion(&lun->lun_shutdown_comp);
                 INIT_LIST_HEAD(&lun->lun_acl_list);
-                INIT_LIST_HEAD(&lun->lun_cmd_list);
                 spin_lock_init(&lun->lun_acl_lock);
-                spin_lock_init(&lun->lun_cmd_lock);
                 spin_lock_init(&lun->lun_sep_lock);
+                init_completion(&lun->lun_ref_comp);
         }
 
         se_tpg->se_tpg_type = se_tpg_type;
@@ -815,10 +827,16 @@ int core_tpg_post_addlun(
 {
         int ret;
 
-        ret = core_dev_export(lun_ptr, tpg, lun);
+        ret = percpu_ref_init(&lun->lun_ref, core_tpg_lun_ref_release);
         if (ret < 0)
                 return ret;
 
+        ret = core_dev_export(lun_ptr, tpg, lun);
+        if (ret < 0) {
+                percpu_ref_cancel_init(&lun->lun_ref);
+                return ret;
+        }
+
         spin_lock(&tpg->tpg_lun_lock);
         lun->lun_access = lun_access;
         lun->lun_status = TRANSPORT_LUN_STATUS_ACTIVE;
@@ -827,14 +845,6 @@ int core_tpg_post_addlun(
         return 0;
 }
 
-static void core_tpg_shutdown_lun(
-        struct se_portal_group *tpg,
-        struct se_lun *lun)
-{
-        core_clear_lun_from_tpg(lun, tpg);
-        transport_clear_lun_from_sessions(lun);
-}
-
 struct se_lun *core_tpg_pre_dellun(
         struct se_portal_group *tpg,
         u32 unpacked_lun)
@@ -869,7 +879,8 @@ int core_tpg_post_dellun(
         struct se_portal_group *tpg,
         struct se_lun *lun)
 {
-        core_tpg_shutdown_lun(tpg, lun);
+        core_clear_lun_from_tpg(lun, tpg);
+        transport_clear_lun_ref(lun);
 
         core_dev_unexport(lun->lun_se_dev, tpg, lun);
 
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 81e945eefbbd..91953da0f623 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -28,7 +28,6 @@
 #include <linux/string.h>
 #include <linux/timer.h>
 #include <linux/slab.h>
-#include <linux/blkdev.h>
 #include <linux/spinlock.h>
 #include <linux/kthread.h>
 #include <linux/in.h>
@@ -473,7 +472,7 @@ void transport_deregister_session(struct se_session *se_sess)
         pr_debug("TARGET_CORE[%s]: Deregistered fabric_sess\n",
                 se_tpg->se_tpg_tfo->get_fabric_name());
         /*
-         * If last kref is dropping now for an explict NodeACL, awake sleeping
+         * If last kref is dropping now for an explicit NodeACL, awake sleeping
          * ->acl_free_comp caller to wakeup configfs se_node_acl->acl_group
          * removal context.
          */
@@ -515,23 +514,6 @@ static int transport_cmd_check_stop(struct se_cmd *cmd, bool remove_from_lists,
         if (write_pending)
                 cmd->t_state = TRANSPORT_WRITE_PENDING;
 
-        /*
-         * Determine if IOCTL context caller in requesting the stopping of this
-         * command for LUN shutdown purposes.
-         */
-        if (cmd->transport_state & CMD_T_LUN_STOP) {
-                pr_debug("%s:%d CMD_T_LUN_STOP for ITT: 0x%08x\n",
-                        __func__, __LINE__, cmd->se_tfo->get_task_tag(cmd));
-
-                cmd->transport_state &= ~CMD_T_ACTIVE;
-                if (remove_from_lists)
-                        target_remove_from_state_list(cmd);
-                spin_unlock_irqrestore(&cmd->t_state_lock, flags);
-
-                complete(&cmd->transport_lun_stop_comp);
-                return 1;
-        }
-
         if (remove_from_lists) {
                 target_remove_from_state_list(cmd);
 
@@ -585,15 +567,11 @@ static int transport_cmd_check_stop_to_fabric(struct se_cmd *cmd)
 static void transport_lun_remove_cmd(struct se_cmd *cmd)
 {
         struct se_lun *lun = cmd->se_lun;
-        unsigned long flags;
 
-        if (!lun)
+        if (!lun || !cmd->lun_ref_active)
                 return;
 
-        spin_lock_irqsave(&lun->lun_cmd_lock, flags);
-        if (!list_empty(&cmd->se_lun_node))
-                list_del_init(&cmd->se_lun_node);
-        spin_unlock_irqrestore(&lun->lun_cmd_lock, flags);
+        percpu_ref_put(&lun->lun_ref);
 }
 
 void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
@@ -668,7 +646,7 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status)
                 cmd->transport_state |= CMD_T_FAILED;
 
         /*
-         * Check for case where an explict ABORT_TASK has been received
+         * Check for case where an explicit ABORT_TASK has been received
          * and transport_wait_for_tasks() will be waiting for completion..
          */
         if (cmd->transport_state & CMD_T_ABORTED &&
@@ -1092,13 +1070,10 @@ void transport_init_se_cmd(
         int task_attr,
         unsigned char *sense_buffer)
 {
-        INIT_LIST_HEAD(&cmd->se_lun_node);
         INIT_LIST_HEAD(&cmd->se_delayed_node);
         INIT_LIST_HEAD(&cmd->se_qf_node);
         INIT_LIST_HEAD(&cmd->se_cmd_list);
         INIT_LIST_HEAD(&cmd->state_list);
-        init_completion(&cmd->transport_lun_fe_stop_comp);
-        init_completion(&cmd->transport_lun_stop_comp);
         init_completion(&cmd->t_transport_stop_comp);
         init_completion(&cmd->cmd_wait_comp);
         init_completion(&cmd->task_stop_comp);
@@ -1719,29 +1694,14 @@ void target_execute_cmd(struct se_cmd *cmd)
         /*
          * If the received CDB has aleady been aborted stop processing it here.
          */
-        if (transport_check_aborted_status(cmd, 1)) {
-                complete(&cmd->transport_lun_stop_comp);
+        if (transport_check_aborted_status(cmd, 1))
                 return;
-        }
 
         /*
-         * Determine if IOCTL context caller in requesting the stopping of this
-         * command for LUN shutdown purposes.
-         */
-        spin_lock_irq(&cmd->t_state_lock);
-        if (cmd->transport_state & CMD_T_LUN_STOP) {
-                pr_debug("%s:%d CMD_T_LUN_STOP for ITT: 0x%08x\n",
-                        __func__, __LINE__, cmd->se_tfo->get_task_tag(cmd));
-
-                cmd->transport_state &= ~CMD_T_ACTIVE;
-                spin_unlock_irq(&cmd->t_state_lock);
-                complete(&cmd->transport_lun_stop_comp);
-                return;
-        }
-        /*
          * Determine if frontend context caller is requesting the stopping of
          * this command for frontend exceptions.
          */
+        spin_lock_irq(&cmd->t_state_lock);
         if (cmd->transport_state & CMD_T_STOP) {
                 pr_debug("%s:%d CMD_T_STOP for ITT: 0x%08x\n",
                         __func__, __LINE__,
@@ -2404,164 +2364,23 @@ void target_wait_for_sess_cmds(struct se_session *se_sess)
 }
 EXPORT_SYMBOL(target_wait_for_sess_cmds);
 
-/*      transport_lun_wait_for_tasks():
- *
- *      Called from ConfigFS context to stop the passed struct se_cmd to allow
- *      an struct se_lun to be successfully shutdown.
- */
-static int transport_lun_wait_for_tasks(struct se_cmd *cmd, struct se_lun *lun)
-{
-        unsigned long flags;
-        int ret = 0;
-
-        /*
-         * If the frontend has already requested this struct se_cmd to
-         * be stopped, we can safely ignore this struct se_cmd.
-         */
-        spin_lock_irqsave(&cmd->t_state_lock, flags);
-        if (cmd->transport_state & CMD_T_STOP) {
-                cmd->transport_state &= ~CMD_T_LUN_STOP;
-
-                pr_debug("ConfigFS ITT[0x%08x] - CMD_T_STOP, skipping\n",
-                         cmd->se_tfo->get_task_tag(cmd));
-                spin_unlock_irqrestore(&cmd->t_state_lock, flags);
-                transport_cmd_check_stop(cmd, false, false);
-                return -EPERM;
-        }
-        cmd->transport_state |= CMD_T_LUN_FE_STOP;
-        spin_unlock_irqrestore(&cmd->t_state_lock, flags);
-
-        // XXX: audit task_flags checks.
-        spin_lock_irqsave(&cmd->t_state_lock, flags);
-        if ((cmd->transport_state & CMD_T_BUSY) &&
-            (cmd->transport_state & CMD_T_SENT)) {
-                if (!target_stop_cmd(cmd, &flags))
-                        ret++;
-        }
-        spin_unlock_irqrestore(&cmd->t_state_lock, flags);
-
-        pr_debug("ConfigFS: cmd: %p stop tasks ret:"
-                        " %d\n", cmd, ret);
-        if (!ret) {
-                pr_debug("ConfigFS: ITT[0x%08x] - stopping cmd....\n",
-                                cmd->se_tfo->get_task_tag(cmd));
-                wait_for_completion(&cmd->transport_lun_stop_comp);
-                pr_debug("ConfigFS: ITT[0x%08x] - stopped cmd....\n",
-                                cmd->se_tfo->get_task_tag(cmd));
-        }
-
-        return 0;
-}
-
-static void __transport_clear_lun_from_sessions(struct se_lun *lun)
-{
-        struct se_cmd *cmd = NULL;
-        unsigned long lun_flags, cmd_flags;
-        /*
-         * Do exception processing and return CHECK_CONDITION status to the
-         * Initiator Port.
-         */
-        spin_lock_irqsave(&lun->lun_cmd_lock, lun_flags);
-        while (!list_empty(&lun->lun_cmd_list)) {
-                cmd = list_first_entry(&lun->lun_cmd_list,
-                       struct se_cmd, se_lun_node);
-                list_del_init(&cmd->se_lun_node);
-
-                spin_lock(&cmd->t_state_lock);
-                pr_debug("SE_LUN[%d] - Setting cmd->transport"
-                        "_lun_stop for  ITT: 0x%08x\n",
-                        cmd->se_lun->unpacked_lun,
-                        cmd->se_tfo->get_task_tag(cmd));
-                cmd->transport_state |= CMD_T_LUN_STOP;
-                spin_unlock(&cmd->t_state_lock);
-
-                spin_unlock_irqrestore(&lun->lun_cmd_lock, lun_flags);
-
-                if (!cmd->se_lun) {
-                        pr_err("ITT: 0x%08x, [i,t]_state: %u/%u\n",
-                                cmd->se_tfo->get_task_tag(cmd),
-                                cmd->se_tfo->get_cmd_state(cmd), cmd->t_state);
-                        BUG();
-                }
-                /*
-                 * If the Storage engine still owns the iscsi_cmd_t, determine
-                 * and/or stop its context.
-                 */
-                pr_debug("SE_LUN[%d] - ITT: 0x%08x before transport"
-                        "_lun_wait_for_tasks()\n", cmd->se_lun->unpacked_lun,
-                        cmd->se_tfo->get_task_tag(cmd));
-
-                if (transport_lun_wait_for_tasks(cmd, cmd->se_lun) < 0) {
-                        spin_lock_irqsave(&lun->lun_cmd_lock, lun_flags);
-                        continue;
-                }
-
-                pr_debug("SE_LUN[%d] - ITT: 0x%08x after transport_lun"
-                        "_wait_for_tasks(): SUCCESS\n",
-                        cmd->se_lun->unpacked_lun,
-                        cmd->se_tfo->get_task_tag(cmd));
-
-                spin_lock_irqsave(&cmd->t_state_lock, cmd_flags);
-                if (!(cmd->transport_state & CMD_T_DEV_ACTIVE)) {
-                        spin_unlock_irqrestore(&cmd->t_state_lock, cmd_flags);
-                        goto check_cond;
-                }
-                cmd->transport_state &= ~CMD_T_DEV_ACTIVE;
-                target_remove_from_state_list(cmd);
-                spin_unlock_irqrestore(&cmd->t_state_lock, cmd_flags);
-
-                /*
-                 * The Storage engine stopped this struct se_cmd before it was
-                 * send to the fabric frontend for delivery back to the
-                 * Initiator Node.  Return this SCSI CDB back with an
-                 * CHECK_CONDITION status.
-                 */
-check_cond:
-                transport_send_check_condition_and_sense(cmd,
-                                TCM_NON_EXISTENT_LUN, 0);
-                /*
-                 *  If the fabric frontend is waiting for this iscsi_cmd_t to
-                 * be released, notify the waiting thread now that LU has
-                 * finished accessing it.
-                 */
-                spin_lock_irqsave(&cmd->t_state_lock, cmd_flags);
-                if (cmd->transport_state & CMD_T_LUN_FE_STOP) {
-                        pr_debug("SE_LUN[%d] - Detected FE stop for"
-                                " struct se_cmd: %p ITT: 0x%08x\n",
-                                lun->unpacked_lun,
-                                cmd, cmd->se_tfo->get_task_tag(cmd));
-
-                        spin_unlock_irqrestore(&cmd->t_state_lock,
-                                        cmd_flags);
-                        transport_cmd_check_stop(cmd, false, false);
-                        complete(&cmd->transport_lun_fe_stop_comp);
-                        spin_lock_irqsave(&lun->lun_cmd_lock, lun_flags);
-                        continue;
-                }
-                pr_debug("SE_LUN[%d] - ITT: 0x%08x finished processing\n",
-                        lun->unpacked_lun, cmd->se_tfo->get_task_tag(cmd));
-
-                spin_unlock_irqrestore(&cmd->t_state_lock, cmd_flags);
-                spin_lock_irqsave(&lun->lun_cmd_lock, lun_flags);
-        }
-        spin_unlock_irqrestore(&lun->lun_cmd_lock, lun_flags);
-}
-
-static int transport_clear_lun_thread(void *p)
+static int transport_clear_lun_ref_thread(void *p)
 {
         struct se_lun *lun = p;
 
-        __transport_clear_lun_from_sessions(lun);
+        percpu_ref_kill(&lun->lun_ref);
+
+        wait_for_completion(&lun->lun_ref_comp);
         complete(&lun->lun_shutdown_comp);
 
         return 0;
 }
 
-int transport_clear_lun_from_sessions(struct se_lun *lun)
+int transport_clear_lun_ref(struct se_lun *lun)
 {
         struct task_struct *kt;
 
-        kt = kthread_run(transport_clear_lun_thread, lun,
+        kt = kthread_run(transport_clear_lun_ref_thread, lun,
                         "tcm_cl_%u", lun->unpacked_lun);
         if (IS_ERR(kt)) {
                 pr_err("Unable to start clear_lun thread\n");
@@ -2595,43 +2414,6 @@ bool transport_wait_for_tasks(struct se_cmd *cmd)
                 spin_unlock_irqrestore(&cmd->t_state_lock, flags);
                 return false;
         }
-        /*
-         * If we are already stopped due to an external event (ie: LUN shutdown)
-         * sleep until the connection can have the passed struct se_cmd back.
-         * The cmd->transport_lun_stopped_sem will be upped by
-         * transport_clear_lun_from_sessions() once the ConfigFS context caller
-         * has completed its operation on the struct se_cmd.
-         */
-        if (cmd->transport_state & CMD_T_LUN_STOP) {
-                pr_debug("wait_for_tasks: Stopping"
-                        " wait_for_completion(&cmd->t_tasktransport_lun_fe"
-                        "_stop_comp); for ITT: 0x%08x\n",
-                        cmd->se_tfo->get_task_tag(cmd));
-                /*
-                 * There is a special case for WRITES where a FE exception +
-                 * LUN shutdown means ConfigFS context is still sleeping on
-                 * transport_lun_stop_comp in transport_lun_wait_for_tasks().
-                 * We go ahead and up transport_lun_stop_comp just to be sure
-                 * here.
-                 */
-                spin_unlock_irqrestore(&cmd->t_state_lock, flags);
-                complete(&cmd->transport_lun_stop_comp);
-                wait_for_completion(&cmd->transport_lun_fe_stop_comp);
-                spin_lock_irqsave(&cmd->t_state_lock, flags);
-
-                target_remove_from_state_list(cmd);
-                /*
-                 * At this point, the frontend who was the originator of this
-                 * struct se_cmd, now owns the structure and can be released through
-                 * normal means below.
-                 */
-                pr_debug("wait_for_tasks: Stopped"
-                        " wait_for_completion(&cmd->t_tasktransport_lun_fe_"
-                        "stop_comp); for ITT: 0x%08x\n",
-                        cmd->se_tfo->get_task_tag(cmd));
-
-                cmd->transport_state &= ~CMD_T_LUN_STOP;
-        }
 
         if (!(cmd->transport_state & CMD_T_ACTIVE)) {
                 spin_unlock_irqrestore(&cmd->t_state_lock, flags);
@@ -2910,6 +2692,7 @@ int transport_check_aborted_status(struct se_cmd *cmd, int send_status)
                  cmd->t_task_cdb[0], cmd->se_tfo->get_task_tag(cmd));
 
         cmd->se_cmd_flags |= SCF_SENT_DELAYED_TAS;
+        cmd->scsi_status = SAM_STAT_TASK_ABORTED;
         trace_target_cmd_complete(cmd);
         cmd->se_tfo->queue_status(cmd);
 
@@ -2938,6 +2721,7 @@ void transport_send_task_abort(struct se_cmd *cmd)
                 if (cmd->se_tfo->write_pending_status(cmd) != 0) {
                         cmd->transport_state |= CMD_T_ABORTED;
                         smp_mb__after_atomic_inc();
+                        return;
                 }
         }
         cmd->scsi_status = SAM_STAT_TASK_ABORTED;
diff --git a/drivers/target/target_core_ua.h b/drivers/target/target_core_ua.h
index 0204952fe4d3..be912b36daae 100644
--- a/drivers/target/target_core_ua.h
+++ b/drivers/target/target_core_ua.h
@@ -19,7 +19,7 @@
 #define ASCQ_2AH_RESERVATIONS_RELEASED                          0x04
 #define ASCQ_2AH_REGISTRATIONS_PREEMPTED                        0x05
 #define ASCQ_2AH_ASYMMETRIC_ACCESS_STATE_CHANGED                0x06
-#define ASCQ_2AH_IMPLICT_ASYMMETRIC_ACCESS_STATE_TRANSITION_FAILED 0x07
+#define ASCQ_2AH_IMPLICIT_ASYMMETRIC_ACCESS_STATE_TRANSITION_FAILED 0x07
 #define ASCQ_2AH_PRIORITY_CHANGED                               0x08
 
 #define ASCQ_2CH_PREVIOUS_RESERVATION_CONFLICT_STATUS           0x09
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index 474cd44fac14..6b88a9958f61 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -405,9 +405,6 @@ static void xcopy_pt_release_cmd(struct se_cmd *se_cmd)
         struct xcopy_pt_cmd *xpt_cmd = container_of(se_cmd,
                                 struct xcopy_pt_cmd, se_cmd);
 
-        if (xpt_cmd->remote_port)
-                kfree(se_cmd->se_lun);
-
         kfree(xpt_cmd);
 }
 
@@ -572,22 +569,10 @@ static int target_xcopy_init_pt_lun(
                 return 0;
         }
 
-        pt_cmd->se_lun = kzalloc(sizeof(struct se_lun), GFP_KERNEL);
-        if (!pt_cmd->se_lun) {
-                pr_err("Unable to allocate pt_cmd->se_lun\n");
-                return -ENOMEM;
-        }
-        init_completion(&pt_cmd->se_lun->lun_shutdown_comp);
-        INIT_LIST_HEAD(&pt_cmd->se_lun->lun_cmd_list);
-        INIT_LIST_HEAD(&pt_cmd->se_lun->lun_acl_list);
-        spin_lock_init(&pt_cmd->se_lun->lun_acl_lock);
-        spin_lock_init(&pt_cmd->se_lun->lun_cmd_lock);
-        spin_lock_init(&pt_cmd->se_lun->lun_sep_lock);
-
+        pt_cmd->se_lun = &se_dev->xcopy_lun;
         pt_cmd->se_dev = se_dev;
 
         pr_debug("Setup emulated se_dev: %p from se_dev\n", pt_cmd->se_dev);
-        pt_cmd->se_lun->lun_se_dev = se_dev;
         pt_cmd->se_cmd_flags |= SCF_SE_LUN_CMD | SCF_CMD_XCOPY_PASSTHROUGH;
 
         pr_debug("Setup emulated se_dev: %p to pt_cmd->se_lun->lun_se_dev\n",
@@ -658,8 +643,6 @@ static int target_xcopy_setup_pt_cmd(
         return 0;
 
 out:
-        if (remote_port == true)
-                kfree(cmd->se_lun);
         return ret;
 }
 
diff --git a/drivers/target/tcm_fc/tcm_fc.h b/drivers/target/tcm_fc/tcm_fc.h
index 0dd54a44abcf..752863acecb8 100644
--- a/drivers/target/tcm_fc/tcm_fc.h
+++ b/drivers/target/tcm_fc/tcm_fc.h
@@ -22,6 +22,7 @@
 #define FT_NAMELEN 32           /* length of ASCII WWPNs including pad */
 #define FT_TPG_NAMELEN 32       /* max length of TPG name */
 #define FT_LUN_NAMELEN 32       /* max length of LUN name */
+#define TCM_FC_DEFAULT_TAGS 512 /* tags used for per-session preallocation */
 
 struct ft_transport_id {
         __u8    format;
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c
index 0e5a1caed176..479ec5621a4e 100644
--- a/drivers/target/tcm_fc/tfc_cmd.c
+++ b/drivers/target/tcm_fc/tfc_cmd.c
@@ -28,6 +28,7 @@
 #include <linux/configfs.h>
 #include <linux/ctype.h>
 #include <linux/hash.h>
+#include <linux/percpu_ida.h>
 #include <asm/unaligned.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_host.h>
@@ -89,16 +90,18 @@ static void ft_free_cmd(struct ft_cmd *cmd)
 {
         struct fc_frame *fp;
         struct fc_lport *lport;
+        struct se_session *se_sess;
 
         if (!cmd)
                 return;
+        se_sess = cmd->sess->se_sess;
         fp = cmd->req_frame;
         lport = fr_dev(fp);
         if (fr_seq(fp))
                 lport->tt.seq_release(fr_seq(fp));
         fc_frame_free(fp);
+        percpu_ida_free(&se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
         ft_sess_put(cmd->sess); /* undo get from lookup at recv */
-        kfree(cmd);
 }
 
 void ft_release_cmd(struct se_cmd *se_cmd)
@@ -432,14 +435,21 @@ static void ft_recv_cmd(struct ft_sess *sess, struct fc_frame *fp)
 {
         struct ft_cmd *cmd;
         struct fc_lport *lport = sess->tport->lport;
+        struct se_session *se_sess = sess->se_sess;
+        int tag;
 
-        cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
-        if (!cmd)
+        tag = percpu_ida_alloc(&se_sess->sess_tag_pool, GFP_ATOMIC);
+        if (tag < 0)
                 goto busy;
+
+        cmd = &((struct ft_cmd *)se_sess->sess_cmd_map)[tag];
+        memset(cmd, 0, sizeof(struct ft_cmd));
+
+        cmd->se_cmd.map_tag = tag;
         cmd->sess = sess;
         cmd->seq = lport->tt.seq_assign(lport, fp);
         if (!cmd->seq) {
-                kfree(cmd);
+                percpu_ida_free(&se_sess->sess_tag_pool, tag);
                 goto busy;
         }
         cmd->req_frame = fp;            /* hold frame during cmd */
diff --git a/drivers/target/tcm_fc/tfc_conf.c b/drivers/target/tcm_fc/tfc_conf.c
index 4e0050840a72..c6932fb53a8d 100644
--- a/drivers/target/tcm_fc/tfc_conf.c
+++ b/drivers/target/tcm_fc/tfc_conf.c
@@ -571,16 +571,16 @@ int ft_register_configfs(void)
         /*
          * Setup default attribute lists for various fabric->tf_cit_tmpl
          */
-        TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = ft_wwn_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
-        TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
-        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 =
+        fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = ft_wwn_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs =
                                                     ft_nacl_base_attrs;
-        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;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
         /*
          * register the fabric for use within TCM
          */
diff --git a/drivers/target/tcm_fc/tfc_sess.c b/drivers/target/tcm_fc/tfc_sess.c
index 4859505ae2ed..ae52c08dad09 100644
--- a/drivers/target/tcm_fc/tfc_sess.c
+++ b/drivers/target/tcm_fc/tfc_sess.c
@@ -210,7 +210,8 @@ static struct ft_sess *ft_sess_create(struct ft_tport *tport, u32 port_id,
         if (!sess)
                 return NULL;
 
-        sess->se_sess = transport_init_session();
+        sess->se_sess = transport_init_session_tags(TCM_FC_DEFAULT_TAGS,
+                                                    sizeof(struct ft_cmd));
         if (IS_ERR(sess->se_sess)) {
                 kfree(sess);
                 return NULL;
diff --git a/drivers/usb/gadget/tcm_usb_gadget.c b/drivers/usb/gadget/tcm_usb_gadget.c
index eccea1df702d..6c3d7950d2a9 100644
--- a/drivers/usb/gadget/tcm_usb_gadget.c
+++ b/drivers/usb/gadget/tcm_usb_gadget.c
@@ -1923,15 +1923,15 @@ static int usbg_register_configfs(void)
         }
 
         fabric->tf_ops = usbg_ops;
-        TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = usbg_wwn_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = usbg_base_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
-        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;
+        fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = usbg_wwn_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = usbg_base_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
         ret = target_fabric_configfs_register(fabric);
         if (ret < 0) {
                 printk(KERN_ERR "target_fabric_configfs_register() failed"
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index e663921eebb6..f175629513ed 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -2168,15 +2168,15 @@ static int tcm_vhost_register_configfs(void)
         /*
          * Setup default attribute lists for various fabric->tf_cit_tmpl
          */
-        TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_vhost_wwn_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_vhost_tpg_attrs;
-        TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
-        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;
+        fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_vhost_wwn_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_vhost_tpg_attrs;
+        fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+        fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
         /*
          * Register the fabric for use within TCM
          */
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index 5ebe21cd5d1c..39e0114d70c5 100644
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -34,6 +34,11 @@ struct se_subsystem_api {
         sense_reason_t (*parse_cdb)(struct se_cmd *cmd);
         u32 (*get_device_type)(struct se_device *);
         sector_t (*get_blocks)(struct se_device *);
+        sector_t (*get_alignment_offset_lbas)(struct se_device *);
+        /* lbppbe = logical blocks per physical block exponent. see SBC-3 */
+        unsigned int (*get_lbppbe)(struct se_device *);
+        unsigned int (*get_io_min)(struct se_device *);
+        unsigned int (*get_io_opt)(struct se_device *);
         unsigned char *(*get_sense_buffer)(struct se_cmd *);
         bool (*get_write_cache)(struct se_device *);
 };
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 5bdb8b7d2a69..45412a6afa69 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -227,6 +227,7 @@ enum tcm_tmreq_table {
 
 /* fabric independent task management response values */
 enum tcm_tmrsp_table {
+        TMR_FUNCTION_FAILED             = 0,
         TMR_FUNCTION_COMPLETE           = 1,
         TMR_TASK_DOES_NOT_EXIST         = 2,
         TMR_LUN_DOES_NOT_EXIST          = 3,
@@ -282,11 +283,12 @@ struct t10_alua_lu_gp_member {
 struct t10_alua_tg_pt_gp {
         u16     tg_pt_gp_id;
         int     tg_pt_gp_valid_id;
+        int     tg_pt_gp_alua_supported_states;
         int     tg_pt_gp_alua_access_status;
         int     tg_pt_gp_alua_access_type;
         int     tg_pt_gp_nonop_delay_msecs;
         int     tg_pt_gp_trans_delay_msecs;
-        int     tg_pt_gp_implict_trans_secs;
+        int     tg_pt_gp_implicit_trans_secs;
         int     tg_pt_gp_pref;
         int     tg_pt_gp_write_metadata;
         /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
@@ -442,7 +444,6 @@ struct se_cmd {
         /* Used for sense data */
         void                    *sense_buffer;
         struct list_head        se_delayed_node;
-        struct list_head        se_lun_node;
         struct list_head        se_qf_node;
         struct se_device      *se_dev;
         struct se_dev_entry   *se_deve;
@@ -470,15 +471,11 @@ struct se_cmd {
 #define CMD_T_SENT              (1 << 4)
 #define CMD_T_STOP              (1 << 5)
 #define CMD_T_FAILED            (1 << 6)
-#define CMD_T_LUN_STOP          (1 << 7)
-#define CMD_T_LUN_FE_STOP       (1 << 8)
-#define CMD_T_DEV_ACTIVE        (1 << 9)
-#define CMD_T_REQUEST_STOP      (1 << 10)
-#define CMD_T_BUSY              (1 << 11)
+#define CMD_T_DEV_ACTIVE        (1 << 7)
+#define CMD_T_REQUEST_STOP      (1 << 8)
+#define CMD_T_BUSY              (1 << 9)
         spinlock_t              t_state_lock;
         struct completion       t_transport_stop_comp;
-        struct completion       transport_lun_fe_stop_comp;
-        struct completion       transport_lun_stop_comp;
 
         struct work_struct      work;
 
@@ -498,6 +495,9 @@ struct se_cmd {
 
         /* backend private data */
         void                    *priv;
+
+        /* Used for lun->lun_ref counting */
+        bool                    lun_ref_active;
 };
 
 struct se_ua {
@@ -628,6 +628,34 @@ struct se_dev_attrib {
         struct config_group da_group;
 };
 
+struct se_port_stat_grps {
+        struct config_group stat_group;
+        struct config_group scsi_port_group;
+        struct config_group scsi_tgt_port_group;
+        struct config_group scsi_transport_group;
+};
+
+struct se_lun {
+#define SE_LUN_LINK_MAGIC                       0xffff7771
+        u32                     lun_link_magic;
+        /* See transport_lun_status_table */
+        enum transport_lun_status_table lun_status;
+        u32                     lun_access;
+        u32                     lun_flags;
+        u32                     unpacked_lun;
+        atomic_t                lun_acl_count;
+        spinlock_t              lun_acl_lock;
+        spinlock_t              lun_sep_lock;
+        struct completion       lun_shutdown_comp;
+        struct list_head        lun_acl_list;
+        struct se_device        *lun_se_dev;
+        struct se_port          *lun_sep;
+        struct config_group     lun_group;
+        struct se_port_stat_grps port_stat_grps;
+        struct completion       lun_ref_comp;
+        struct percpu_ref       lun_ref;
+};
+
 struct se_dev_stat_grps {
         struct config_group stat_group;
         struct config_group scsi_dev_group;
@@ -656,11 +684,10 @@ struct se_device {
         /* Pointer to transport specific device structure */
         u32                     dev_index;
         u64                     creation_time;
-        u32                     num_resets;
-        u64                     num_cmds;
-        u64                     read_bytes;
-        u64                     write_bytes;
-        spinlock_t              stats_lock;
+        atomic_long_t           num_resets;
+        atomic_long_t           num_cmds;
+        atomic_long_t           read_bytes;
+        atomic_long_t           write_bytes;
         /* Active commands on this virtual SE device */
         atomic_t                simple_cmds;
         atomic_t                dev_ordered_id;
@@ -711,6 +738,7 @@ struct se_device {
         struct se_subsystem_api *transport;
         /* Linked list for struct se_hba struct se_device list */
         struct list_head        dev_list;
+        struct se_lun           xcopy_lun;
 };
 
 struct se_hba {
@@ -730,34 +758,6 @@ struct se_hba {
         struct se_subsystem_api *transport;
 };
 
-struct se_port_stat_grps {
-        struct config_group stat_group;
-        struct config_group scsi_port_group;
-        struct config_group scsi_tgt_port_group;
-        struct config_group scsi_transport_group;
-};
-
-struct se_lun {
-#define SE_LUN_LINK_MAGIC                       0xffff7771
-        u32                     lun_link_magic;
-        /* See transport_lun_status_table */
-        enum transport_lun_status_table lun_status;
-        u32                     lun_access;
-        u32                     lun_flags;
-        u32                     unpacked_lun;
-        atomic_t                lun_acl_count;
-        spinlock_t              lun_acl_lock;
-        spinlock_t              lun_cmd_lock;
-        spinlock_t              lun_sep_lock;
-        struct completion       lun_shutdown_comp;
-        struct list_head        lun_cmd_list;
-        struct list_head        lun_acl_list;
-        struct se_device        *lun_se_dev;
-        struct se_port          *lun_sep;
-        struct config_group     lun_group;
-        struct se_port_stat_grps port_stat_grps;
-};
-
 struct scsi_port_stats {
        u64     cmd_pdus;
        u64     tx_data_octets;
diff --git a/include/target/target_core_configfs.h b/include/target/target_core_configfs.h
index 713c5004f4ae..e0801386e4dc 100644
--- a/include/target/target_core_configfs.h
+++ b/include/target/target_core_configfs.h
@@ -54,4 +54,3 @@ struct target_fabric_configfs {
         struct target_fabric_configfs_template tf_cit_tmpl;
 };
 
-#define TF_CIT_TMPL(tf) (&(tf)->tf_cit_tmpl)
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
index 882b650e32be..4cf4fda404a3 100644
--- a/include/target/target_core_fabric.h
+++ b/include/target/target_core_fabric.h
@@ -137,6 +137,8 @@ void	transport_generic_request_failure(struct se_cmd *, sense_reason_t);
 void    __target_execute_cmd(struct se_cmd *);
 int     transport_lookup_tmr_lun(struct se_cmd *, u32);
 
+struct se_node_acl *core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
+                unsigned char *);
 struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *,
                 unsigned char *);
 void    core_tpg_clear_object_luns(struct se_portal_group *);
diff --git a/lib/Makefile b/lib/Makefile
index b46065fd67a4..a459c31e8c6b 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -13,7 +13,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \
          sha1.o md5.o irq_regs.o reciprocal_div.o argv_split.o \
          proportions.o flex_proportions.o prio_heap.o ratelimit.o show_mem.o \
          is_single_threaded.o plist.o decompress.o kobject_uevent.o \
-         earlycpio.o percpu-refcount.o percpu_ida.o
+         earlycpio.o
 
 obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o
 lib-$(CONFIG_MMU) += ioremap.o
@@ -26,7 +26,7 @@ obj-y += bcd.o div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
          bust_spinlocks.o hexdump.o kasprintf.o bitmap.o scatterlist.o \
          gcd.o lcm.o list_sort.o uuid.o flex_array.o iovec.o clz_ctz.o \
          bsearch.o find_last_bit.o find_next_bit.o llist.o memweight.o kfifo.o \
-         percpu_ida.o
+         percpu-refcount.o percpu_ida.o
 obj-y += string_helpers.o
 obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o
 obj-y += kstrtox.o
diff --git a/lib/percpu_ida.c b/lib/percpu_ida.c
index b0698ea972c6..9d054bf91d0f 100644
--- a/lib/percpu_ida.c
+++ b/lib/percpu_ida.c
@@ -117,8 +117,7 @@ static inline void alloc_global_tags(struct percpu_ida *pool,
                   min(pool->nr_free, pool->percpu_batch_size));
 }
 
-static inline unsigned alloc_local_tag(struct percpu_ida *pool,
-                                       struct percpu_ida_cpu *tags)
+static inline unsigned alloc_local_tag(struct percpu_ida_cpu *tags)
 {
         int tag = -ENOSPC;
 
@@ -159,7 +158,7 @@ int percpu_ida_alloc(struct percpu_ida *pool, gfp_t gfp)
         tags = this_cpu_ptr(pool->tag_cpu);
 
         /* Fastpath */
-        tag = alloc_local_tag(pool, tags);
+        tag = alloc_local_tag(tags);
         if (likely(tag >= 0)) {
                 local_irq_restore(flags);
                 return tag;