Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "The usual driver updates (ufs, qla2xxx, tcmu, ibmvfc, lpfc, smartpqi,
  hisi_sas, qedi, qedf, mpt3sas) and minor bug fixes.

  There are only three core changes: adding sense codes, cleaning up
  noretry and adding an option for limitless retries"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (226 commits)
  scsi: hisi_sas: Recover PHY state according to the status before reset
  scsi: hisi_sas: Filter out new PHY up events during suspend
  scsi: hisi_sas: Add device link between SCSI devices and hisi_hba
  scsi: hisi_sas: Add check for methods _PS0 and _PR0
  scsi: hisi_sas: Add controller runtime PM support for v3 hw
  scsi: hisi_sas: Switch to new framework to support suspend and resume
  scsi: hisi_sas: Use hisi_hba->cq_nvecs for calling calling synchronize_irq()
  scsi: qedf: Remove redundant assignment to variable 'rc'
  scsi: lpfc: Remove unneeded variable 'status' in lpfc_fcp_cpu_map_store()
  scsi: snic: Convert to use DEFINE_SEQ_ATTRIBUTE macro
  scsi: qla4xxx: Delete unneeded variable 'status' in qla4xxx_process_ddb_changed
  scsi: sun_esp: Use module_platform_driver to simplify the code
  scsi: sun3x_esp: Use module_platform_driver to simplify the code
  scsi: sni_53c710: Use module_platform_driver to simplify the code
  scsi: qlogicpti: Use module_platform_driver to simplify the code
  scsi: mac_esp: Use module_platform_driver to simplify the code
  scsi: jazz_esp: Use module_platform_driver to simplify the code
  scsi: mvumi: Fix error return in mvumi_io_attach()
  scsi: lpfc: Drop nodelist reference on error in lpfc_gen_req()
  scsi: be2iscsi: Fix a theoretical leak in beiscsi_create_eqs()
  ...

20 files changed, 687 insertions, 403 deletions

diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 5d93ccc73153..284b1cc91c80 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -157,6 +157,14 @@ qla2x00_sysfs_write_fw_dump(struct file *filp, struct kobject *kobj,
 			       vha->host_no);
 		}
 		break;
+	case 10:
+		if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
+			ql_log(ql_log_info, vha, 0x70e9,
+			       "Issuing MPI firmware dump on host#%ld.\n",
+			       vha->host_no);
+			ha->isp_ops->mpi_fw_dump(vha, 0);
+		}
+		break;
 	}
 	return count;
 }
@@ -744,8 +752,6 @@ qla2x00_sysfs_write_reset(struct file *filp, struct kobject *kobj,
 			qla83xx_idc_audit(vha, IDC_AUDIT_TIMESTAMP);
 			qla83xx_idc_unlock(vha, 0);
 			break;
-		} else if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
-			qla27xx_reset_mpi(vha);
 		} else {
 			/* Make sure FC side is not in reset */
 			WARN_ON_ONCE(qla2x00_wait_for_hba_online(vha) !=
@@ -2726,6 +2732,9 @@ qla2x00_get_fc_host_stats(struct Scsi_Host *shost)
 	struct link_statistics *stats;
 	dma_addr_t stats_dma;
 	struct fc_host_statistics *p = &vha->fc_host_stat;
+	struct qla_qpair *qpair;
+	int i;
+	u64 ib = 0, ob = 0, ir = 0, or = 0;
 
 	memset(p, -1, sizeof(*p));
 
@@ -2762,6 +2771,27 @@ qla2x00_get_fc_host_stats(struct Scsi_Host *shost)
 	if (rval != QLA_SUCCESS)
 		goto done_free;
 
+	/* --- */
+	for (i = 0; i < vha->hw->max_qpairs; i++) {
+		qpair = vha->hw->queue_pair_map[i];
+		if (!qpair)
+			continue;
+		ir += qpair->counters.input_requests;
+		or += qpair->counters.output_requests;
+		ib += qpair->counters.input_bytes;
+		ob += qpair->counters.output_bytes;
+	}
+	ir += ha->base_qpair->counters.input_requests;
+	or += ha->base_qpair->counters.output_requests;
+	ib += ha->base_qpair->counters.input_bytes;
+	ob += ha->base_qpair->counters.output_bytes;
+
+	ir += vha->qla_stats.input_requests;
+	or += vha->qla_stats.output_requests;
+	ib += vha->qla_stats.input_bytes;
+	ob += vha->qla_stats.output_bytes;
+	/* --- */
+
 	p->link_failure_count = le32_to_cpu(stats->link_fail_cnt);
 	p->loss_of_sync_count = le32_to_cpu(stats->loss_sync_cnt);
 	p->loss_of_signal_count = le32_to_cpu(stats->loss_sig_cnt);
@@ -2781,15 +2811,16 @@ qla2x00_get_fc_host_stats(struct Scsi_Host *shost)
 			p->rx_words = le64_to_cpu(stats->fpm_recv_word_cnt);
 			p->tx_words = le64_to_cpu(stats->fpm_xmit_word_cnt);
 		} else {
-			p->rx_words = vha->qla_stats.input_bytes;
-			p->tx_words = vha->qla_stats.output_bytes;
+			p->rx_words = ib >> 2;
+			p->tx_words = ob >> 2;
 		}
 	}
+
 	p->fcp_control_requests = vha->qla_stats.control_requests;
-	p->fcp_input_requests = vha->qla_stats.input_requests;
-	p->fcp_output_requests = vha->qla_stats.output_requests;
-	p->fcp_input_megabytes = vha->qla_stats.input_bytes >> 20;
-	p->fcp_output_megabytes = vha->qla_stats.output_bytes >> 20;
+	p->fcp_input_requests = ir;
+	p->fcp_output_requests = or;
+	p->fcp_input_megabytes  = ib >> 20;
+	p->fcp_output_megabytes = ob >> 20;
 	p->seconds_since_last_reset =
 	    get_jiffies_64() - vha->qla_stats.jiffies_at_last_reset;
 	do_div(p->seconds_since_last_reset, HZ);
@@ -2809,9 +2840,18 @@ qla2x00_reset_host_stats(struct Scsi_Host *shost)
 	struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 	struct link_statistics *stats;
 	dma_addr_t stats_dma;
+	int i;
+	struct qla_qpair *qpair;
 
 	memset(&vha->qla_stats, 0, sizeof(vha->qla_stats));
 	memset(&vha->fc_host_stat, 0, sizeof(vha->fc_host_stat));
+	for (i = 0; i < vha->hw->max_qpairs; i++) {
+		qpair = vha->hw->queue_pair_map[i];
+		if (!qpair)
+			continue;
+		memset(&qpair->counters, 0, sizeof(qpair->counters));
+	}
+	memset(&ha->base_qpair->counters, 0, sizeof(qpair->counters));
 
 	vha->qla_stats.jiffies_at_last_reset = get_jiffies_64();
 
@@ -3214,46 +3254,7 @@ qla2x00_init_host_attr(scsi_qla_host_t *vha)
 	fc_host_max_npiv_vports(vha->host) = ha->max_npiv_vports;
 	fc_host_npiv_vports_inuse(vha->host) = ha->cur_vport_count;
 
-	if (IS_CNA_CAPABLE(ha))
-		speeds = FC_PORTSPEED_10GBIT;
-	else if (IS_QLA28XX(ha) || IS_QLA27XX(ha)) {
-		if (ha->max_supported_speed == 2) {
-			if (ha->min_supported_speed <= 6)
-				speeds |= FC_PORTSPEED_64GBIT;
-		}
-		if (ha->max_supported_speed == 2 ||
-		    ha->max_supported_speed == 1) {
-			if (ha->min_supported_speed <= 5)
-				speeds |= FC_PORTSPEED_32GBIT;
-		}
-		if (ha->max_supported_speed == 2 ||
-		    ha->max_supported_speed == 1 ||
-		    ha->max_supported_speed == 0) {
-			if (ha->min_supported_speed <= 4)
-				speeds |= FC_PORTSPEED_16GBIT;
-		}
-		if (ha->max_supported_speed == 1 ||
-		    ha->max_supported_speed == 0) {
-			if (ha->min_supported_speed <= 3)
-				speeds |= FC_PORTSPEED_8GBIT;
-		}
-		if (ha->max_supported_speed == 0) {
-			if (ha->min_supported_speed <= 2)
-				speeds |= FC_PORTSPEED_4GBIT;
-		}
-	} else if (IS_QLA2031(ha))
-		speeds = FC_PORTSPEED_16GBIT|FC_PORTSPEED_8GBIT|
-			FC_PORTSPEED_4GBIT;
-	else if (IS_QLA25XX(ha) || IS_QLAFX00(ha))
-		speeds = FC_PORTSPEED_8GBIT|FC_PORTSPEED_4GBIT|
-			FC_PORTSPEED_2GBIT|FC_PORTSPEED_1GBIT;
-	else if (IS_QLA24XX_TYPE(ha))
-		speeds = FC_PORTSPEED_4GBIT|FC_PORTSPEED_2GBIT|
-			FC_PORTSPEED_1GBIT;
-	else if (IS_QLA23XX(ha))
-		speeds = FC_PORTSPEED_2GBIT|FC_PORTSPEED_1GBIT;
-	else
-		speeds = FC_PORTSPEED_1GBIT;
+	speeds = qla25xx_fdmi_port_speed_capability(ha);
 
 	fc_host_supported_speeds(vha->host) = speeds;
 }
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
index 1be811a5d69d..898b8d474868 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -16,7 +16,7 @@
  * | Device Discovery             |       0x2134       | 0x210e-0x2116  |
  * |				  | 		       | 0x211a         |
  * |                              |                    | 0x211c-0x2128  |
- * |                              |                    | 0x212a-0x2134  |
+ * |                              |                    | 0x212c-0x2134  |
  * | Queue Command and IO tracing |       0x3074       | 0x300b         |
  * |                              |                    | 0x3027-0x3028  |
  * |                              |                    | 0x303d-0x3041  |
@@ -2449,7 +2449,7 @@ static void ql_dbg_prefix(char *pbuf, int pbuf_size,
 		const struct pci_dev *pdev = vha->hw->pdev;
 
 		/* <module-name> [<dev-name>]-<msg-id>:<host>: */
-		snprintf(pbuf, pbuf_size, "%s [%s]-%04x:%ld: ", QL_MSGHDR,
+		snprintf(pbuf, pbuf_size, "%s [%s]-%04x:%lu: ", QL_MSGHDR,
 			 dev_name(&(pdev->dev)), msg_id, vha->host_no);
 	} else {
 		/* <module-name> [<dev-name>]-<msg-id>: : */
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index a165120d2976..b0b4228050e9 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -624,6 +624,12 @@ enum {
 	TYPE_TGT_TMCMD,		/* task management */
 };
 
+struct iocb_resource {
+	u8 res_type;
+	u8 pad;
+	u16 iocb_cnt;
+};
+
 typedef struct srb {
 	/*
 	 * Do not move cmd_type field, it needs to
@@ -631,6 +637,7 @@ typedef struct srb {
 	 */
 	uint8_t cmd_type;
 	uint8_t pad[3];
+	struct iocb_resource iores;
 	struct kref cmd_kref;	/* need to migrate ref_count over to this */
 	void *priv;
 	wait_queue_head_t nvme_ls_waitq;
@@ -2443,12 +2450,6 @@ typedef struct fc_port {
 	struct list_head list;
 	struct scsi_qla_host *vha;
 
-	uint8_t node_name[WWN_SIZE];
-	uint8_t port_name[WWN_SIZE];
-	port_id_t d_id;
-	uint16_t loop_id;
-	uint16_t old_loop_id;
-
 	unsigned int conf_compl_supported:1;
 	unsigned int deleted:2;
 	unsigned int free_pending:1;
@@ -2465,15 +2466,24 @@ typedef struct fc_port {
 	unsigned int n2n_flag:1;
 	unsigned int explicit_logout:1;
 	unsigned int prli_pend_timer:1;
+	uint8_t nvme_flag;
+
+	uint8_t node_name[WWN_SIZE];
+	uint8_t port_name[WWN_SIZE];
+	port_id_t d_id;
+	uint16_t loop_id;
+	uint16_t old_loop_id;
 
 	struct completion nvme_del_done;
 	uint32_t nvme_prli_service_param;
+#define NVME_PRLI_SP_PI_CTRL	BIT_9
+#define NVME_PRLI_SP_SLER	BIT_8
 #define NVME_PRLI_SP_CONF       BIT_7
 #define NVME_PRLI_SP_INITIATOR  BIT_5
 #define NVME_PRLI_SP_TARGET     BIT_4
 #define NVME_PRLI_SP_DISCOVERY  BIT_3
 #define NVME_PRLI_SP_FIRST_BURST	BIT_0
-	uint8_t nvme_flag;
+
 	uint32_t nvme_first_burst_size;
 #define NVME_FLAG_REGISTERED 4
 #define NVME_FLAG_DELETING 2
@@ -2544,6 +2554,8 @@ typedef struct fc_port {
 	u8 last_login_state;
 	u16 n2n_link_reset_cnt;
 	u16 n2n_chip_reset;
+
+	struct dentry *dfs_rport_dir;
 } fc_port_t;
 
 enum {
@@ -3508,6 +3520,14 @@ struct qla_tgt_counters {
 	uint64_t num_term_xchg_sent;
 };
 
+struct qla_counters {
+	uint64_t input_bytes;
+	uint64_t input_requests;
+	uint64_t output_bytes;
+	uint64_t output_requests;
+
+};
+
 struct qla_qpair;
 
 /* Response queue data structure */
@@ -3566,6 +3586,15 @@ struct req_que {
 	uint8_t req_pkt[REQUEST_ENTRY_SIZE];
 };
 
+struct qla_fw_resources {
+	u16 iocbs_total;
+	u16 iocbs_limit;
+	u16 iocbs_qp_limit;
+	u16 iocbs_used;
+};
+
+#define QLA_IOCB_PCT_LIMIT 95
+
 /*Queue pair data structure */
 struct qla_qpair {
 	spinlock_t qp_lock;
@@ -3592,6 +3621,7 @@ struct qla_qpair {
 	uint32_t enable_class_2:1;
 	uint32_t enable_explicit_conf:1;
 	uint32_t use_shadow_reg:1;
+	uint32_t rcv_intr:1;
 
 	uint16_t id;			/* qp number used with FW */
 	uint16_t vp_idx;		/* vport ID */
@@ -3607,13 +3637,17 @@ struct qla_qpair {
 	struct qla_msix_entry *msix; /* point to &ha->msix_entries[x] */
 	struct qla_hw_data *hw;
 	struct work_struct q_work;
+	struct qla_counters counters;
+
 	struct list_head qp_list_elem; /* vha->qp_list */
 	struct list_head hints_list;
-	uint16_t cpuid;
+
 	uint16_t retry_term_cnt;
 	__le32	retry_term_exchg_addr;
 	uint64_t retry_term_jiff;
 	struct qla_tgt_counters tgt_counters;
+	uint16_t cpuid;
+	struct qla_fw_resources fwres ____cacheline_aligned;
 };
 
 /* Place holder for FW buffer parameters */
@@ -3881,6 +3915,7 @@ struct qla_hw_data {
 				/* Enabled in Driver */
 		uint32_t	scm_enabled:1;
 		uint32_t	max_req_queue_warned:1;
+		uint32_t	plogi_template_valid:1;
 	} flags;
 
 	uint16_t max_exchg;
@@ -4127,6 +4162,10 @@ struct qla_hw_data {
 #define USE_ASYNC_SCAN(ha) (IS_QLA25XX(ha) || IS_QLA81XX(ha) ||\
 	IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha))
 
+#define IS_ZIO_THRESHOLD_CAPABLE(ha) \
+	((IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) &&\
+	 (ha->zio_mode == QLA_ZIO_MODE_6))
+
 	/* HBA serial number */
 	uint8_t		serial0;
 	uint8_t		serial1;
@@ -4214,7 +4253,7 @@ struct qla_hw_data {
 	/* Extended Logins  */
 	void		*exlogin_buf;
 	dma_addr_t	exlogin_buf_dma;
-	int		exlogin_size;
+	uint32_t	exlogin_size;
 
 #define ENABLE_EXCHANGE_OFFLD	BIT_2
 
@@ -4225,7 +4264,8 @@ struct qla_hw_data {
 	int 		exchoffld_count;
 
 	/* n2n */
-	struct els_plogi_payload plogi_els_payld;
+	struct fc_els_flogi plogi_els_payld;
+#define LOGIN_TEMPLATE_SIZE (sizeof(struct fc_els_flogi) - 4)
 
 	void            *swl;
 
@@ -4273,6 +4313,7 @@ struct qla_hw_data {
 #define FW_ATTR_EXT0_SCM_BROCADE	0x00001000
 	/* Cisco fabric attached */
 #define FW_ATTR_EXT0_SCM_CISCO		0x00002000
+#define FW_ATTR_EXT0_NVME2	BIT_13
 	uint16_t	fw_attributes_ext[2];
 	uint32_t	fw_memory_size;
 	uint32_t	fw_transfer_size;
@@ -4622,6 +4663,7 @@ typedef struct scsi_qla_host {
 		uint32_t	qpairs_rsp_created:1;
 		uint32_t	nvme_enabled:1;
 		uint32_t        nvme_first_burst:1;
+		uint32_t        nvme2_enabled:1;
 	} flags;
 
 	atomic_t	loop_state;
@@ -4780,6 +4822,8 @@ typedef struct scsi_qla_host {
 	uint16_t ql2xexchoffld;
 	uint16_t ql2xiniexchg;
 
+	struct dentry *dfs_rport_root;
+
 	struct purex_list {
 		struct list_head head;
 		spinlock_t lock;
@@ -5103,6 +5147,8 @@ struct sff_8247_a0 {
 	 ha->current_topology == ISP_CFG_N || \
 	 !ha->current_topology)
 
+#define QLA_N2N_WAIT_TIME	5 /* 2 * ra_tov(n2n) + 1 */
+
 #define NVME_TYPE(fcport) \
 	(fcport->fc4_type & FS_FC4TYPE_NVME) \
 
diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c
index e62b2115235e..6f5f18fc974a 100644
--- a/drivers/scsi/qla2xxx/qla_dfs.c
+++ b/drivers/scsi/qla2xxx/qla_dfs.c
@@ -12,6 +12,140 @@
 static struct dentry *qla2x00_dfs_root;
 static atomic_t qla2x00_dfs_root_count;
 
+#define QLA_DFS_RPORT_DEVLOSS_TMO	1
+
+static int
+qla_dfs_rport_get(struct fc_port *fp, int attr_id, u64 *val)
+{
+	switch (attr_id) {
+	case QLA_DFS_RPORT_DEVLOSS_TMO:
+		/* Only supported for FC-NVMe devices that are registered. */
+		if (!(fp->nvme_flag & NVME_FLAG_REGISTERED))
+			return -EIO;
+		*val = fp->nvme_remote_port->dev_loss_tmo;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int
+qla_dfs_rport_set(struct fc_port *fp, int attr_id, u64 val)
+{
+	switch (attr_id) {
+	case QLA_DFS_RPORT_DEVLOSS_TMO:
+		/* Only supported for FC-NVMe devices that are registered. */
+		if (!(fp->nvme_flag & NVME_FLAG_REGISTERED))
+			return -EIO;
+#if (IS_ENABLED(CONFIG_NVME_FC))
+		return nvme_fc_set_remoteport_devloss(fp->nvme_remote_port,
+						      val);
+#else /* CONFIG_NVME_FC */
+		return -EINVAL;
+#endif /* CONFIG_NVME_FC */
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+#define DEFINE_QLA_DFS_RPORT_RW_ATTR(_attr_id, _attr)		\
+static int qla_dfs_rport_##_attr##_get(void *data, u64 *val)	\
+{								\
+	struct fc_port *fp = data;				\
+	return qla_dfs_rport_get(fp, _attr_id, val);		\
+}								\
+static int qla_dfs_rport_##_attr##_set(void *data, u64 val)	\
+{								\
+	struct fc_port *fp = data;				\
+	return qla_dfs_rport_set(fp, _attr_id, val);		\
+}								\
+DEFINE_DEBUGFS_ATTRIBUTE(qla_dfs_rport_##_attr##_fops,		\
+		qla_dfs_rport_##_attr##_get,			\
+		qla_dfs_rport_##_attr##_set, "%llu\n")
+
+/*
+ * Wrapper for getting fc_port fields.
+ *
+ * _attr    : Attribute name.
+ * _get_val : Accessor macro to retrieve the value.
+ */
+#define DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, _get_val)			\
+static int qla_dfs_rport_field_##_attr##_get(void *data, u64 *val)	\
+{									\
+	struct fc_port *fp = data;					\
+	*val = _get_val;						\
+	return 0;							\
+}									\
+DEFINE_DEBUGFS_ATTRIBUTE(qla_dfs_rport_field_##_attr##_fops,		\
+		qla_dfs_rport_field_##_attr##_get,			\
+		NULL, "%llu\n")
+
+#define DEFINE_QLA_DFS_RPORT_ACCESS(_attr, _get_val) \
+	DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, _get_val)
+
+#define DEFINE_QLA_DFS_RPORT_FIELD(_attr) \
+	DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, fp->_attr)
+
+DEFINE_QLA_DFS_RPORT_RW_ATTR(QLA_DFS_RPORT_DEVLOSS_TMO, dev_loss_tmo);
+
+DEFINE_QLA_DFS_RPORT_FIELD(disc_state);
+DEFINE_QLA_DFS_RPORT_FIELD(scan_state);
+DEFINE_QLA_DFS_RPORT_FIELD(fw_login_state);
+DEFINE_QLA_DFS_RPORT_FIELD(login_pause);
+DEFINE_QLA_DFS_RPORT_FIELD(flags);
+DEFINE_QLA_DFS_RPORT_FIELD(nvme_flag);
+DEFINE_QLA_DFS_RPORT_FIELD(last_rscn_gen);
+DEFINE_QLA_DFS_RPORT_FIELD(rscn_gen);
+DEFINE_QLA_DFS_RPORT_FIELD(login_gen);
+DEFINE_QLA_DFS_RPORT_FIELD(loop_id);
+DEFINE_QLA_DFS_RPORT_FIELD_GET(port_id, fp->d_id.b24);
+DEFINE_QLA_DFS_RPORT_FIELD_GET(sess_kref, kref_read(&fp->sess_kref));
+
+void
+qla2x00_dfs_create_rport(scsi_qla_host_t *vha, struct fc_port *fp)
+{
+	char wwn[32];
+
+#define QLA_CREATE_RPORT_FIELD_ATTR(_attr)			\
+	debugfs_create_file(#_attr, 0400, fp->dfs_rport_dir,	\
+		fp, &qla_dfs_rport_field_##_attr##_fops)
+
+	if (!vha->dfs_rport_root || fp->dfs_rport_dir)
+		return;
+
+	sprintf(wwn, "pn-%016llx", wwn_to_u64(fp->port_name));
+	fp->dfs_rport_dir = debugfs_create_dir(wwn, vha->dfs_rport_root);
+	if (!fp->dfs_rport_dir)
+		return;
+	if (NVME_TARGET(vha->hw, fp))
+		debugfs_create_file("dev_loss_tmo", 0600, fp->dfs_rport_dir,
+				    fp, &qla_dfs_rport_dev_loss_tmo_fops);
+
+	QLA_CREATE_RPORT_FIELD_ATTR(disc_state);
+	QLA_CREATE_RPORT_FIELD_ATTR(scan_state);
+	QLA_CREATE_RPORT_FIELD_ATTR(fw_login_state);
+	QLA_CREATE_RPORT_FIELD_ATTR(login_pause);
+	QLA_CREATE_RPORT_FIELD_ATTR(flags);
+	QLA_CREATE_RPORT_FIELD_ATTR(nvme_flag);
+	QLA_CREATE_RPORT_FIELD_ATTR(last_rscn_gen);
+	QLA_CREATE_RPORT_FIELD_ATTR(rscn_gen);
+	QLA_CREATE_RPORT_FIELD_ATTR(login_gen);
+	QLA_CREATE_RPORT_FIELD_ATTR(loop_id);
+	QLA_CREATE_RPORT_FIELD_ATTR(port_id);
+	QLA_CREATE_RPORT_FIELD_ATTR(sess_kref);
+}
+
+void
+qla2x00_dfs_remove_rport(scsi_qla_host_t *vha, struct fc_port *fp)
+{
+	if (!vha->dfs_rport_root || !fp->dfs_rport_dir)
+		return;
+	debugfs_remove_recursive(fp->dfs_rport_dir);
+	fp->dfs_rport_dir = NULL;
+}
+
 static int
 qla2x00_dfs_tgt_sess_show(struct seq_file *s, void *unused)
 {
@@ -57,51 +191,51 @@ qla2x00_dfs_tgt_port_database_show(struct seq_file *s, void *unused)
 {
 	scsi_qla_host_t *vha = s->private;
 	struct qla_hw_data *ha = vha->hw;
-	struct gid_list_info *gid_list, *gid;
+	struct gid_list_info *gid_list;
 	dma_addr_t gid_list_dma;
 	fc_port_t fc_port;
+	char *id_iter;
 	int rc, i;
 	uint16_t entries, loop_id;
-	struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
 
 	seq_printf(s, "%s\n", vha->host_str);
-	if (tgt) {
-		gid_list = dma_alloc_coherent(&ha->pdev->dev,
-		    qla2x00_gid_list_size(ha),
-		    &gid_list_dma, GFP_KERNEL);
-		if (!gid_list) {
-			ql_dbg(ql_dbg_user, vha, 0x7018,
-			    "DMA allocation failed for %u\n",
-			     qla2x00_gid_list_size(ha));
-			return 0;
-		}
+	gid_list = dma_alloc_coherent(&ha->pdev->dev,
+				      qla2x00_gid_list_size(ha),
+				      &gid_list_dma, GFP_KERNEL);
+	if (!gid_list) {
+		ql_dbg(ql_dbg_user, vha, 0x7018,
+		       "DMA allocation failed for %u\n",
+		       qla2x00_gid_list_size(ha));
+		return 0;
+	}
 
-		rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma,
-		    &entries);
-		if (rc != QLA_SUCCESS)
-			goto out_free_id_list;
+	rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma,
+				  &entries);
+	if (rc != QLA_SUCCESS)
+		goto out_free_id_list;
 
-		gid = gid_list;
+	id_iter = (char *)gid_list;
 
-		seq_puts(s, "Port Name	Port ID 	Loop ID\n");
+	seq_puts(s, "Port Name	Port ID		Loop ID\n");
 
-		for (i = 0; i < entries; i++) {
-			loop_id = le16_to_cpu(gid->loop_id);
-			memset(&fc_port, 0, sizeof(fc_port_t));
+	for (i = 0; i < entries; i++) {
+		struct gid_list_info *gid =
+			(struct gid_list_info *)id_iter;
+		loop_id = le16_to_cpu(gid->loop_id);
+		memset(&fc_port, 0, sizeof(fc_port_t));
 
-			fc_port.loop_id = loop_id;
+		fc_port.loop_id = loop_id;
 
-			rc = qla24xx_gpdb_wait(vha, &fc_port, 0);
-			seq_printf(s, "%8phC  %02x%02x%02x  %d\n",
-				fc_port.port_name, fc_port.d_id.b.domain,
-				fc_port.d_id.b.area, fc_port.d_id.b.al_pa,
-				fc_port.loop_id);
-			gid = (void *)gid + ha->gid_list_info_size;
-		}
-out_free_id_list:
-		dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
-		    gid_list, gid_list_dma);
+		rc = qla24xx_gpdb_wait(vha, &fc_port, 0);
+		seq_printf(s, "%8phC  %02x%02x%02x  %d\n",
+			   fc_port.port_name, fc_port.d_id.b.domain,
+			   fc_port.d_id.b.area, fc_port.d_id.b.al_pa,
+			   fc_port.loop_id);
+		id_iter += ha->gid_list_info_size;
 	}
+out_free_id_list:
+	dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
+			  gid_list, gid_list_dma);
 
 	return 0;
 }
@@ -127,6 +261,8 @@ qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused)
 	struct scsi_qla_host *vha = s->private;
 	uint16_t mb[MAX_IOCB_MB_REG];
 	int rc;
+	struct qla_hw_data *ha = vha->hw;
+	u16 iocbs_used, i;
 
 	rc = qla24xx_res_count_wait(vha, mb, SIZEOF_IOCB_MB_REG);
 	if (rc != QLA_SUCCESS) {
@@ -151,6 +287,18 @@ qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused)
 		    mb[23]);
 	}
 
+	if (ql2xenforce_iocb_limit) {
+		/* lock is not require. It's an estimate. */
+		iocbs_used = ha->base_qpair->fwres.iocbs_used;
+		for (i = 0; i < ha->max_qpairs; i++) {
+			if (ha->queue_pair_map[i])
+				iocbs_used += ha->queue_pair_map[i]->fwres.iocbs_used;
+		}
+
+		seq_printf(s, "Driver: estimate iocb used [%d] high water limit [%d]\n",
+			   iocbs_used, ha->base_qpair->fwres.iocbs_limit);
+	}
+
 	return 0;
 }
 
@@ -473,9 +621,21 @@ create_nodes:
 	ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess",
 		S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops);
 
-	if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))
+	if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha)) {
 		ha->tgt.dfs_naqp = debugfs_create_file("naqp",
 		    0400, ha->dfs_dir, vha, &dfs_naqp_ops);
+		if (!ha->tgt.dfs_naqp) {
+			ql_log(ql_log_warn, vha, 0xd011,
+			       "Unable to create debugFS naqp node.\n");
+			goto out;
+		}
+	}
+	vha->dfs_rport_root = debugfs_create_dir("rports", ha->dfs_dir);
+	if (!vha->dfs_rport_root) {
+		ql_log(ql_log_warn, vha, 0xd012,
+		       "Unable to create debugFS rports node.\n");
+		goto out;
+	}
 out:
 	return 0;
 }
@@ -515,6 +675,11 @@ qla2x00_dfs_remove(scsi_qla_host_t *vha)
 		ha->dfs_fce = NULL;
 	}
 
+	if (vha->dfs_rport_root) {
+		debugfs_remove_recursive(vha->dfs_rport_root);
+		vha->dfs_rport_root = NULL;
+	}
+
 	if (ha->dfs_dir) {
 		debugfs_remove(ha->dfs_dir);
 		ha->dfs_dir = NULL;
diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h
index bba1b77fba7e..f0052d75849c 100644
--- a/drivers/scsi/qla2xxx/qla_fw.h
+++ b/drivers/scsi/qla2xxx/qla_fw.h
@@ -619,7 +619,7 @@ struct sts_entry_24xx {
 #define SF_NVME_ERSP            BIT_6
 #define SF_FCP_RSP_DMA		BIT_0
 
-	__le16	retry_delay;
+	__le16	status_qualifier;
 	__le16	scsi_status;		/* SCSI status. */
 #define SS_CONFIRMATION_REQ		BIT_12
 
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index 0ced18f3104e..26dc055d93b3 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -129,6 +129,8 @@ int qla2x00_reserve_mgmt_server_loop_id(scsi_qla_host_t *);
 void qla_rscn_replay(fc_port_t *fcport);
 void qla24xx_free_purex_item(struct purex_item *item);
 extern bool qla24xx_risc_firmware_invalid(uint32_t *);
+void qla_init_iocb_limit(scsi_qla_host_t *);
+
 
 /*
  * Global Data in qla_os.c source file.
@@ -175,6 +177,7 @@ extern int qla2xuseresexchforels;
 extern int ql2xexlogins;
 extern int ql2xdifbundlinginternalbuffers;
 extern int ql2xfulldump_on_mpifail;
+extern int ql2xenforce_iocb_limit;
 
 extern int qla2x00_loop_reset(scsi_qla_host_t *);
 extern void qla2x00_abort_all_cmds(scsi_qla_host_t *, int);
@@ -704,6 +707,8 @@ int qla24xx_async_gfpnid(scsi_qla_host_t *, fc_port_t *);
 void qla24xx_handle_gfpnid_event(scsi_qla_host_t *, struct event_arg *);
 void qla24xx_sp_unmap(scsi_qla_host_t *, srb_t *);
 void qla_scan_work_fn(struct work_struct *);
+uint qla25xx_fdmi_port_speed_capability(struct qla_hw_data *);
+uint qla25xx_fdmi_port_speed_currently(struct qla_hw_data *);
 
 /*
  * Global Function Prototypes in qla_attr.c source file.
@@ -935,9 +940,10 @@ void qlt_clr_qp_table(struct scsi_qla_host *vha);
 void qlt_set_mode(struct scsi_qla_host *);
 int qla2x00_set_data_rate(scsi_qla_host_t *vha, uint16_t mode);
 extern void qla24xx_process_purex_list(struct purex_list *);
+extern void qla2x00_dfs_create_rport(scsi_qla_host_t *vha, struct fc_port *fp);
+extern void qla2x00_dfs_remove_rport(scsi_qla_host_t *vha, struct fc_port *fp);
 
 /* nvme.c */
 void qla_nvme_unregister_remote_port(struct fc_port *fcport);
-void qla27xx_reset_mpi(scsi_qla_host_t *vha);
 void qla_handle_els_plogi_done(scsi_qla_host_t *vha, struct event_arg *ea);
 #endif /* _QLA_GBL_H */
diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c
index b569fd6e96d6..4d3e8b668c6a 100644
--- a/drivers/scsi/qla2xxx/qla_gs.c
+++ b/drivers/scsi/qla2xxx/qla_gs.c
@@ -1502,7 +1502,7 @@ qla2x00_prep_ct_fdmi_req(struct ct_sns_pkt *p, uint16_t cmd,
 	return &p->p.req;
 }
 
-static uint
+uint
 qla25xx_fdmi_port_speed_capability(struct qla_hw_data *ha)
 {
 	uint speeds = 0;
@@ -1546,7 +1546,7 @@ qla25xx_fdmi_port_speed_capability(struct qla_hw_data *ha)
 		}
 		return speeds;
 	}
-	if (IS_QLA25XX(ha))
+	if (IS_QLA25XX(ha) || IS_QLAFX00(ha))
 		return FDMI_PORT_SPEED_8GB|FDMI_PORT_SPEED_4GB|
 			FDMI_PORT_SPEED_2GB|FDMI_PORT_SPEED_1GB;
 	if (IS_QLA24XX_TYPE(ha))
@@ -1556,7 +1556,8 @@ qla25xx_fdmi_port_speed_capability(struct qla_hw_data *ha)
 		return FDMI_PORT_SPEED_2GB|FDMI_PORT_SPEED_1GB;
 	return FDMI_PORT_SPEED_1GB;
 }
-static uint
+
+uint
 qla25xx_fdmi_port_speed_currently(struct qla_hw_data *ha)
 {
 	switch (ha->link_data_rate) {
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 0bd04a62af83..fc8a55da04a0 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -63,6 +63,16 @@ void qla2x00_sp_free(srb_t *sp)
 	qla2x00_rel_sp(sp);
 }
 
+void qla2xxx_rel_done_warning(srb_t *sp, int res)
+{
+	WARN_ONCE(1, "Calling done() of an already freed srb %p object\n", sp);
+}
+
+void qla2xxx_rel_free_warning(srb_t *sp)
+{
+	WARN_ONCE(1, "Calling free() of an already freed srb %p object\n", sp);
+}
+
 /* Asynchronous Login/Logout Routines -------------------------------------- */
 
 unsigned long
@@ -3288,6 +3298,8 @@ qla2x00_alloc_fw_dump(scsi_qla_host_t *vha)
 			    j, fwdt->dump_size);
 			dump_size += fwdt->dump_size;
 		}
+		/* Add space for spare MPI fw dump. */
+		dump_size += ha->fwdt[1].dump_size;
 	} else {
 		req_q_size = req->length * sizeof(request_t);
 		rsp_q_size = rsp->length * sizeof(response_t);
@@ -3622,6 +3634,31 @@ out:
 	return ha->flags.lr_detected;
 }
 
+void qla_init_iocb_limit(scsi_qla_host_t *vha)
+{
+	u16 i, num_qps;
+	u32 limit;
+	struct qla_hw_data *ha = vha->hw;
+
+	num_qps = ha->num_qpairs + 1;
+	limit = (ha->orig_fw_iocb_count * QLA_IOCB_PCT_LIMIT) / 100;
+
+	ha->base_qpair->fwres.iocbs_total = ha->orig_fw_iocb_count;
+	ha->base_qpair->fwres.iocbs_limit = limit;
+	ha->base_qpair->fwres.iocbs_qp_limit = limit / num_qps;
+	ha->base_qpair->fwres.iocbs_used = 0;
+	for (i = 0; i < ha->max_qpairs; i++) {
+		if (ha->queue_pair_map[i])  {
+			ha->queue_pair_map[i]->fwres.iocbs_total =
+				ha->orig_fw_iocb_count;
+			ha->queue_pair_map[i]->fwres.iocbs_limit = limit;
+			ha->queue_pair_map[i]->fwres.iocbs_qp_limit =
+				limit / num_qps;
+			ha->queue_pair_map[i]->fwres.iocbs_used = 0;
+		}
+	}
+}
+
 /**
  * qla2x00_setup_chip() - Load and start RISC firmware.
  * @vha: HA context
@@ -3690,9 +3727,7 @@ execute_fw_with_lr:
 					goto execute_fw_with_lr;
 				}
 
-				if ((IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
-				    IS_QLA28XX(ha)) &&
-				    (ha->zio_mode == QLA_ZIO_MODE_6))
+				if (IS_ZIO_THRESHOLD_CAPABLE(ha))
 					qla27xx_set_zio_threshold(vha,
 					    ha->last_zio_threshold);
 
@@ -3723,6 +3758,7 @@ enable_82xx_npiv:
 						    MIN_MULTI_ID_FABRIC - 1;
 				}
 				qla2x00_get_resource_cnts(vha);
+				qla_init_iocb_limit(vha);
 
 				/*
 				 * Allocate the array of outstanding commands
@@ -4957,6 +4993,29 @@ qla2x00_free_fcport(fc_port_t *fcport)
 	kfree(fcport);
 }
 
+static void qla_get_login_template(scsi_qla_host_t *vha)
+{
+	struct qla_hw_data *ha = vha->hw;
+	int rval;
+	u32 *bp, sz;
+	__be32 *q;
+
+	memset(ha->init_cb, 0, ha->init_cb_size);
+	sz = min_t(int, sizeof(struct fc_els_flogi), ha->init_cb_size);
+	rval = qla24xx_get_port_login_templ(vha, ha->init_cb_dma,
+					    ha->init_cb, sz);
+	if (rval != QLA_SUCCESS) {
+		ql_dbg(ql_dbg_init, vha, 0x00d1,
+		       "PLOGI ELS param read fail.\n");
+		return;
+	}
+	q = (__be32 *)&ha->plogi_els_payld.fl_csp;
+
+	bp = (uint32_t *)ha->init_cb;
+	cpu_to_be32_array(q, bp, sz / 4);
+	ha->flags.plogi_template_valid = 1;
+}
+
 /*
  * qla2x00_configure_loop
  *      Updates Fibre Channel Device Database with what is actually on loop.
@@ -5000,6 +5059,7 @@ qla2x00_configure_loop(scsi_qla_host_t *vha)
 	clear_bit(RSCN_UPDATE, &vha->dpc_flags);
 
 	qla2x00_get_data_rate(vha);
+	qla_get_login_template(vha);
 
 	/* Determine what we need to do */
 	if ((ha->current_topology == ISP_CFG_FL ||
@@ -5084,32 +5144,11 @@ qla2x00_configure_loop(scsi_qla_host_t *vha)
 
 static int qla2x00_configure_n2n_loop(scsi_qla_host_t *vha)
 {
-	struct qla_hw_data *ha = vha->hw;
 	unsigned long flags;
 	fc_port_t *fcport;
-	int rval;
-
-	if (test_and_clear_bit(N2N_LOGIN_NEEDED, &vha->dpc_flags)) {
-		/* borrowing */
-		u32 *bp, sz;
-
-		memset(ha->init_cb, 0, ha->init_cb_size);
-		sz = min_t(int, sizeof(struct els_plogi_payload),
-			   ha->init_cb_size);
-		rval = qla24xx_get_port_login_templ(vha, ha->init_cb_dma,
-						    ha->init_cb, sz);
-		if (rval == QLA_SUCCESS) {
-			__be32 *q = &ha->plogi_els_payld.data[0];
 
-			bp = (uint32_t *)ha->init_cb;
-			cpu_to_be32_array(q, bp, sz / 4);
-			memcpy(bp, q, sizeof(ha->plogi_els_payld.data));
-		} else {
-			ql_dbg(ql_dbg_init, vha, 0x00d1,
-			       "PLOGI ELS param read fail.\n");
-			goto skip_login;
-		}
-	}
+	if (test_and_clear_bit(N2N_LOGIN_NEEDED, &vha->dpc_flags))
+		set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
 
 	list_for_each_entry(fcport, &vha->vp_fcports, list) {
 		if (fcport->n2n_flag) {
@@ -5118,7 +5157,6 @@ static int qla2x00_configure_n2n_loop(scsi_qla_host_t *vha)
 		}
 	}
 
-skip_login:
 	spin_lock_irqsave(&vha->work_lock, flags);
 	vha->scan.scan_retry++;
 	spin_unlock_irqrestore(&vha->work_lock, flags);
@@ -5486,6 +5524,8 @@ qla2x00_update_fcport(scsi_qla_host_t *vha, fc_port_t *fcport)
 
 	qla2x00_iidma_fcport(vha, fcport);
 
+	qla2x00_dfs_create_rport(vha, fcport);
+
 	if (NVME_TARGET(vha->hw, fcport)) {
 		qla_nvme_register_remote(vha, fcport);
 		qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE);
@@ -7109,10 +7149,9 @@ qla24xx_reset_adapter(scsi_qla_host_t *vha)
 	unsigned long flags = 0;
 	struct qla_hw_data *ha = vha->hw;
 	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
-	int rval = QLA_SUCCESS;
 
 	if (IS_P3P_TYPE(ha))
-		return rval;
+		return QLA_SUCCESS;
 
 	vha->flags.online = 0;
 	ha->isp_ops->disable_intrs(ha);
@@ -7127,7 +7166,7 @@ qla24xx_reset_adapter(scsi_qla_host_t *vha)
 	if (IS_NOPOLLING_TYPE(ha))
 		ha->isp_ops->enable_intrs(ha);
 
-	return rval;
+	return QLA_SUCCESS;
 }
 
 /* On sparc systems, obtain port and node WWN from firmware
diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h
index 861dc522723c..c7aae438f984 100644
--- a/drivers/scsi/qla2xxx/qla_inline.h
+++ b/drivers/scsi/qla2xxx/qla_inline.h
@@ -207,10 +207,15 @@ qla2xxx_get_qpair_sp(scsi_qla_host_t *vha, struct qla_qpair *qpair,
 	return sp;
 }
 
+void qla2xxx_rel_done_warning(srb_t *sp, int res);
+void qla2xxx_rel_free_warning(srb_t *sp);
+
 static inline void
 qla2xxx_rel_qpair_sp(struct qla_qpair *qpair, srb_t *sp)
 {
 	sp->qpair = NULL;
+	sp->done = qla2xxx_rel_done_warning;
+	sp->free = qla2xxx_rel_free_warning;
 	mempool_free(sp, qpair->srb_mempool);
 	QLA_QPAIR_MARK_NOT_BUSY(qpair);
 }
@@ -266,11 +271,41 @@ qla2x00_handle_mbx_completion(struct qla_hw_data *ha, int status)
 }
 
 static inline void
-qla2x00_set_retry_delay_timestamp(fc_port_t *fcport, uint16_t retry_delay)
+qla2x00_set_retry_delay_timestamp(fc_port_t *fcport, uint16_t sts_qual)
 {
-	if (retry_delay)
-		fcport->retry_delay_timestamp = jiffies +
-		    (retry_delay * HZ / 10);
+	u8 scope;
+	u16 qual;
+#define SQ_SCOPE_MASK		0xc000 /* SAM-6 rev5 5.3.2 */
+#define SQ_SCOPE_SHIFT		14
+#define SQ_QUAL_MASK		0x3fff
+
+#define SQ_MAX_WAIT_SEC		60 /* Max I/O hold off time in seconds. */
+#define SQ_MAX_WAIT_TIME	(SQ_MAX_WAIT_SEC * 10) /* in 100ms. */
+
+	if (!sts_qual) /* Common case. */
+		return;
+
+	scope = (sts_qual & SQ_SCOPE_MASK) >> SQ_SCOPE_SHIFT;
+	/* Handle only scope 1 or 2, which is for I-T nexus. */
+	if (scope != 1 && scope != 2)
+		return;
+
+	/* Skip processing, if retry delay timer is already in effect. */
+	if (fcport->retry_delay_timestamp &&
+	    time_before(jiffies, fcport->retry_delay_timestamp))
+		return;
+
+	qual = sts_qual & SQ_QUAL_MASK;
+	if (qual < 1 || qual > 0x3fef)
+		return;
+	qual = min(qual, (u16)SQ_MAX_WAIT_TIME);
+
+	/* qual is expressed in 100ms increments. */
+	fcport->retry_delay_timestamp = jiffies + (qual * HZ / 10);
+
+	ql_log(ql_log_warn, fcport->vha, 0x5101,
+	       "%8phC: I/O throttling requested (status qualifier = %04xh), holding off I/Os for %ums.\n",
+	       fcport->port_name, sts_qual, qual * 100);
 }
 
 static inline bool
@@ -343,3 +378,58 @@ qla2xxx_get_fc4_priority(struct scsi_qla_host *vha)
 
 	return (data >> 6) & BIT_0 ? FC4_PRIORITY_FCP : FC4_PRIORITY_NVME;
 }
+
+enum {
+	RESOURCE_NONE,
+	RESOURCE_INI,
+};
+
+static inline int
+qla_get_iocbs(struct qla_qpair *qp, struct iocb_resource *iores)
+{
+	u16 iocbs_used, i;
+	struct qla_hw_data *ha = qp->vha->hw;
+
+	if (!ql2xenforce_iocb_limit) {
+		iores->res_type = RESOURCE_NONE;
+		return 0;
+	}
+
+	if ((iores->iocb_cnt + qp->fwres.iocbs_used) < qp->fwres.iocbs_qp_limit) {
+		qp->fwres.iocbs_used += iores->iocb_cnt;
+		return 0;
+	} else {
+		/* no need to acquire qpair lock. It's just rough calculation */
+		iocbs_used = ha->base_qpair->fwres.iocbs_used;
+		for (i = 0; i < ha->max_qpairs; i++) {
+			if (ha->queue_pair_map[i])
+				iocbs_used += ha->queue_pair_map[i]->fwres.iocbs_used;
+		}
+
+		if ((iores->iocb_cnt + iocbs_used) < qp->fwres.iocbs_limit) {
+			qp->fwres.iocbs_used += iores->iocb_cnt;
+			return 0;
+		} else {
+			iores->res_type = RESOURCE_NONE;
+			return -ENOSPC;
+		}
+	}
+}
+
+static inline void
+qla_put_iocbs(struct qla_qpair *qp, struct iocb_resource *iores)
+{
+	switch (iores->res_type) {
+	case RESOURCE_NONE:
+		break;
+	default:
+		if (qp->fwres.iocbs_used >= iores->iocb_cnt) {
+			qp->fwres.iocbs_used -= iores->iocb_cnt;
+		} else {
+			// should not happen
+			qp->fwres.iocbs_used = 0;
+		}
+		break;
+	}
+	iores->res_type = RESOURCE_NONE;
+}
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index 0954fa41911c..93c2460b2e53 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -594,6 +594,7 @@ qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt,
 	uint32_t dsd_list_len;
 	struct dsd_dma *dsd_ptr;
 	struct ct6_dsd *ctx;
+	struct qla_qpair *qpair = sp->qpair;
 
 	cmd = GET_CMD_SP(sp);
 
@@ -612,12 +613,12 @@ qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt,
 	/* Set transfer direction */
 	if (cmd->sc_data_direction == DMA_TO_DEVICE) {
 		cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
-		vha->qla_stats.output_bytes += scsi_bufflen(cmd);
-		vha->qla_stats.output_requests++;
+		qpair->counters.output_bytes += scsi_bufflen(cmd);
+		qpair->counters.output_requests++;
 	} else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
 		cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
-		vha->qla_stats.input_bytes += scsi_bufflen(cmd);
-		vha->qla_stats.input_requests++;
+		qpair->counters.input_bytes += scsi_bufflen(cmd);
+		qpair->counters.input_requests++;
 	}
 
 	cur_seg = scsi_sglist(cmd);
@@ -704,6 +705,7 @@ qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
 	struct scsi_cmnd *cmd;
 	struct scatterlist *sg;
 	int i;
+	struct qla_qpair *qpair = sp->qpair;
 
 	cmd = GET_CMD_SP(sp);
 
@@ -721,12 +723,12 @@ qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
 	/* Set transfer direction */
 	if (cmd->sc_data_direction == DMA_TO_DEVICE) {
 		cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_WRITE_DATA);
-		vha->qla_stats.output_bytes += scsi_bufflen(cmd);
-		vha->qla_stats.output_requests++;
+		qpair->counters.output_bytes += scsi_bufflen(cmd);
+		qpair->counters.output_requests++;
 	} else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
 		cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_READ_DATA);
-		vha->qla_stats.input_bytes += scsi_bufflen(cmd);
-		vha->qla_stats.input_requests++;
+		qpair->counters.input_bytes += scsi_bufflen(cmd);
+		qpair->counters.input_requests++;
 	}
 
 	/* One DSD is available in the Command Type 3 IOCB */
@@ -1635,6 +1637,12 @@ qla24xx_start_scsi(srb_t *sp)
 
 	tot_dsds = nseg;
 	req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
+
+	sp->iores.res_type = RESOURCE_INI;
+	sp->iores.iocb_cnt = req_cnt;
+	if (qla_get_iocbs(sp->qpair, &sp->iores))
+		goto queuing_error;
+
 	if (req->cnt < (req_cnt + 2)) {
 		cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 		    rd_reg_dword_relaxed(req->req_q_out);
@@ -1707,6 +1715,7 @@ queuing_error:
 	if (tot_dsds)
 		scsi_dma_unmap(cmd);
 
+	qla_put_iocbs(sp->qpair, &sp->iores);
 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
 	return QLA_FUNCTION_FAILED;
@@ -1820,6 +1829,12 @@ qla24xx_dif_start_scsi(srb_t *sp)
 	/* Total Data and protection sg segment(s) */
 	tot_prot_dsds = nseg;
 	tot_dsds += nseg;
+
+	sp->iores.res_type = RESOURCE_INI;
+	sp->iores.iocb_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
+	if (qla_get_iocbs(sp->qpair, &sp->iores))
+		goto queuing_error;
+
 	if (req->cnt < (req_cnt + 2)) {
 		cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 		    rd_reg_dword_relaxed(req->req_q_out);
@@ -1894,6 +1909,7 @@ queuing_error:
 	}
 	/* Cleanup will be performed by the caller (queuecommand) */
 
+	qla_put_iocbs(sp->qpair, &sp->iores);
 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 	return QLA_FUNCTION_FAILED;
 }
@@ -1955,6 +1971,12 @@ qla2xxx_start_scsi_mq(srb_t *sp)
 
 	tot_dsds = nseg;
 	req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
+
+	sp->iores.res_type = RESOURCE_INI;
+	sp->iores.iocb_cnt = req_cnt;
+	if (qla_get_iocbs(sp->qpair, &sp->iores))
+		goto queuing_error;
+
 	if (req->cnt < (req_cnt + 2)) {
 		cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 		    rd_reg_dword_relaxed(req->req_q_out);
@@ -2027,6 +2049,7 @@ queuing_error:
 	if (tot_dsds)
 		scsi_dma_unmap(cmd);
 
+	qla_put_iocbs(sp->qpair, &sp->iores);
 	spin_unlock_irqrestore(&qpair->qp_lock, flags);
 
 	return QLA_FUNCTION_FAILED;
@@ -2155,6 +2178,12 @@ qla2xxx_dif_start_scsi_mq(srb_t *sp)
 	/* Total Data and protection sg segment(s) */
 	tot_prot_dsds = nseg;
 	tot_dsds += nseg;
+
+	sp->iores.res_type = RESOURCE_INI;
+	sp->iores.iocb_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
+	if (qla_get_iocbs(sp->qpair, &sp->iores))
+		goto queuing_error;
+
 	if (req->cnt < (req_cnt + 2)) {
 		cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 		    rd_reg_dword_relaxed(req->req_q_out);
@@ -2232,6 +2261,7 @@ queuing_error:
 	}
 	/* Cleanup will be performed by the caller (queuecommand) */
 
+	qla_put_iocbs(sp->qpair, &sp->iores);
 	spin_unlock_irqrestore(&qpair->qp_lock, flags);
 	return QLA_FUNCTION_FAILED;
 }
@@ -2348,6 +2378,14 @@ qla24xx_prli_iocb(srb_t *sp, struct logio_entry_24xx *logio)
 		if (sp->vha->flags.nvme_first_burst)
 			logio->io_parameter[0] =
 				cpu_to_le32(NVME_PRLI_SP_FIRST_BURST);
+		if (sp->vha->flags.nvme2_enabled) {
+			/* Set service parameter BIT_8 for SLER support */
+			logio->io_parameter[0] |=
+				cpu_to_le32(NVME_PRLI_SP_SLER);
+			/* Set service parameter BIT_9 for PI control support */
+			logio->io_parameter[0] |=
+				cpu_to_le32(NVME_PRLI_SP_PI_CTRL);
+		}
 	}
 
 	logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
@@ -2975,8 +3013,7 @@ qla24xx_els_dcmd2_iocb(scsi_qla_host_t *vha, int els_opcode,
 	memset(ptr, 0, sizeof(struct els_plogi_payload));
 	memset(resp_ptr, 0, sizeof(struct els_plogi_payload));
 	memcpy(elsio->u.els_plogi.els_plogi_pyld->data,
-	    &ha->plogi_els_payld.data,
-	    sizeof(elsio->u.els_plogi.els_plogi_pyld->data));
+	    &ha->plogi_els_payld.fl_csp, LOGIN_TEMPLATE_SIZE);
 
 	elsio->u.els_plogi.els_cmd = els_opcode;
 	elsio->u.els_plogi.els_plogi_pyld->opcode = els_opcode;
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 25e0a1684763..b35cef2f8c71 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -767,7 +767,7 @@ qla27xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
 	ql_log(ql_log_warn, vha, 0x02f0,
 	       "MPI Heartbeat stop. MPI reset is%s needed. "
 	       "MB0[%xh] MB1[%xh] MB2[%xh] MB3[%xh]\n",
-	       mb[0] & BIT_8 ? "" : " not",
+	       mb[1] & BIT_8 ? "" : " not",
 	       mb[0], mb[1], mb[2], mb[3]);
 
 	if ((mb[1] & BIT_8) == 0)
@@ -1716,35 +1716,35 @@ qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
 {
 	struct qla_hw_data *ha = vha->hw;
 	sts_entry_t *pkt = iocb;
-	srb_t *sp = NULL;
+	srb_t *sp;
 	uint16_t index;
 
 	index = LSW(pkt->handle);
 	if (index >= req->num_outstanding_cmds) {
 		ql_log(ql_log_warn, vha, 0x5031,
-			   "Invalid command index (%x) type %8ph.\n",
-			   index, iocb);
+			   "%s: Invalid command index (%x) type %8ph.\n",
+			   func, index, iocb);
 		if (IS_P3P_TYPE(ha))
 			set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
 		else
 			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
-		goto done;
+		return NULL;
 	}
 	sp = req->outstanding_cmds[index];
 	if (!sp) {
 		ql_log(ql_log_warn, vha, 0x5032,
-		    "Invalid completion handle (%x) -- timed-out.\n", index);
-		return sp;
+			"%s: Invalid completion handle (%x) -- timed-out.\n",
+			func, index);
+		return NULL;
 	}
 	if (sp->handle != index) {
 		ql_log(ql_log_warn, vha, 0x5033,
-		    "SRB handle (%x) mismatch %x.\n", sp->handle, index);
+			"%s: SRB handle (%x) mismatch %x.\n", func,
+			sp->handle, index);
 		return NULL;
 	}
 
 	req->outstanding_cmds[index] = NULL;
-
-done:
 	return sp;
 }
 
@@ -2855,7 +2855,7 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
 	int logit = 1;
 	int res = 0;
 	uint16_t state_flags = 0;
-	uint16_t retry_delay = 0;
+	uint16_t sts_qual = 0;
 
 	if (IS_FWI2_CAPABLE(ha)) {
 		comp_status = le16_to_cpu(sts24->comp_status);
@@ -2901,6 +2901,7 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
 		}
 		return;
 	}
+	qla_put_iocbs(sp->qpair, &sp->iores);
 
 	if (sp->cmd_type != TYPE_SRB) {
 		req->outstanding_cmds[handle] = NULL;
@@ -2953,8 +2954,6 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
 	sense_len = par_sense_len = rsp_info_len = resid_len =
 	    fw_resid_len = 0;
 	if (IS_FWI2_CAPABLE(ha)) {
-		u16 sts24_retry_delay = le16_to_cpu(sts24->retry_delay);
-
 		if (scsi_status & SS_SENSE_LEN_VALID)
 			sense_len = le32_to_cpu(sts24->sense_len);
 		if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
@@ -2968,13 +2967,7 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
 		host_to_fcp_swap(sts24->data, sizeof(sts24->data));
 		ox_id = le16_to_cpu(sts24->ox_id);
 		par_sense_len = sizeof(sts24->data);
-		/* Valid values of the retry delay timer are 0x1-0xffef */
-		if (sts24_retry_delay > 0 && sts24_retry_delay < 0xfff1) {
-			retry_delay = sts24_retry_delay & 0x3fff;
-			ql_dbg(ql_dbg_io, sp->vha, 0x3033,
-			    "%s: scope=%#x retry_delay=%#x\n", __func__,
-			    sts24_retry_delay >> 14, retry_delay);
-		}
+		sts_qual = le16_to_cpu(sts24->status_qualifier);
 	} else {
 		if (scsi_status & SS_SENSE_LEN_VALID)
 			sense_len = le16_to_cpu(sts->req_sense_length);
@@ -3012,9 +3005,9 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
 	 * Check retry_delay_timer value if we receive a busy or
 	 * queue full.
 	 */
-	if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
-	    lscsi_status == SAM_STAT_BUSY)
-		qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
+	if (unlikely(lscsi_status == SAM_STAT_TASK_SET_FULL ||
+		     lscsi_status == SAM_STAT_BUSY))
+		qla2x00_set_retry_delay_timestamp(fcport, sts_qual);
 
 	/*
 	 * Based on Host and scsi status generate status code for Linux
@@ -3321,6 +3314,7 @@ qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
 	default:
 		sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
 		if (sp) {
+			qla_put_iocbs(sp->qpair, &sp->iores);
 			sp->done(sp, res);
 			return 0;
 		}
@@ -3406,6 +3400,32 @@ void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *vha,
 	sp->done(sp, comp_status);
 }
 
+static void qla24xx_process_mbx_iocb_response(struct scsi_qla_host *vha,
+	struct rsp_que *rsp, struct sts_entry_24xx *pkt)
+{
+	struct qla_hw_data *ha = vha->hw;
+	srb_t *sp;
+	static const char func[] = "MBX-IOCB2";
+
+	sp = qla2x00_get_sp_from_handle(vha, func, rsp->req, pkt);
+	if (!sp)
+		return;
+
+	if (sp->type == SRB_SCSI_CMD ||
+	    sp->type == SRB_NVME_CMD ||
+	    sp->type == SRB_TM_CMD) {
+		ql_log(ql_log_warn, vha, 0x509d,
+			"Inconsistent event entry type %d\n", sp->type);
+		if (IS_P3P_TYPE(ha))
+			set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
+		else
+			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+		return;
+	}
+
+	qla24xx_mbx_iocb_entry(vha, rsp->req, (struct mbx_24xx_entry *)pkt);
+}
+
 /**
  * qla24xx_process_response_queue() - Process response queue entries.
  * @vha: SCSI driver HA context
@@ -3422,8 +3442,10 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
 	if (!ha->flags.fw_started)
 		return;
 
-	if (rsp->qpair->cpuid != smp_processor_id())
+	if (rsp->qpair->cpuid != smp_processor_id() || !rsp->qpair->rcv_intr) {
+		rsp->qpair->rcv_intr = 1;
 		qla_cpu_update(rsp->qpair, smp_processor_id());
+	}
 
 	while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
 		pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
@@ -3513,8 +3535,7 @@ process_err:
 			    (struct abort_entry_24xx *)pkt);
 			break;
 		case MBX_IOCB_TYPE:
-			qla24xx_mbx_iocb_entry(vha, rsp->req,
-			    (struct mbx_24xx_entry *)pkt);
+			qla24xx_process_mbx_iocb_response(vha, rsp, pkt);
 			break;
 		case VP_CTRL_IOCB_TYPE:
 			qla_ctrlvp_completed(vha, rsp->req,
@@ -3873,7 +3894,7 @@ qla2xxx_msix_rsp_q(int irq, void *dev_id)
 	}
 	ha = qpair->hw;
 
-	queue_work(ha->wq, &qpair->q_work);
+	queue_work_on(smp_processor_id(), ha->wq, &qpair->q_work);
 
 	return IRQ_HANDLED;
 }
@@ -3899,7 +3920,7 @@ qla2xxx_msix_rsp_q_hs(int irq, void *dev_id)
 	wrt_reg_dword(&reg->hccr, HCCRX_CLR_RISC_INT);
 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
-	queue_work(ha->wq, &qpair->q_work);
+	queue_work_on(smp_processor_id(), ha->wq, &qpair->q_work);
 
 	return IRQ_HANDLED;
 }
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 226f1428d3e5..bf858179d23c 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -845,7 +845,7 @@ qla_get_exlogin_status(scsi_qla_host_t *vha, uint16_t *buf_sz,
  * Context:
  *	Kernel context.
  */
-#define CONFIG_XLOGINS_MEM	0x3
+#define CONFIG_XLOGINS_MEM	0x9
 int
 qla_set_exlogin_mem_cfg(scsi_qla_host_t *vha, dma_addr_t phys_addr)
 {
@@ -872,8 +872,9 @@ qla_set_exlogin_mem_cfg(scsi_qla_host_t *vha, dma_addr_t phys_addr)
 	mcp->flags = 0;
 	rval = qla2x00_mailbox_command(vha, mcp);
 	if (rval != QLA_SUCCESS) {
-		/*EMPTY*/
-		ql_dbg(ql_dbg_mbx, vha, 0x111b, "Failed=%x.\n", rval);
+		ql_dbg(ql_dbg_mbx, vha, 0x111b,
+		       "EXlogin Failed=%x. MB0=%x MB11=%x\n",
+		       rval, mcp->mb[0], mcp->mb[11]);
 	} else {
 		ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x118c,
 		    "Done %s.\n", __func__);
@@ -1092,6 +1093,14 @@ qla2x00_get_fw_version(scsi_qla_host_t *vha)
 			    "%s: FC-NVMe is Enabled (0x%x)\n",
 			     __func__, ha->fw_attributes_h);
 		}
+
+		/* BIT_13 of Extended FW Attributes informs about NVMe2 support */
+		if (ha->fw_attributes_ext[0] & FW_ATTR_EXT0_NVME2) {
+			ql_log(ql_log_info, vha, 0xd302,
+			       "Firmware supports NVMe2 0x%x\n",
+			       ha->fw_attributes_ext[0]);
+			vha->flags.nvme2_enabled = 1;
+		}
 	}
 
 	if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
@@ -1121,12 +1130,18 @@ qla2x00_get_fw_version(scsi_qla_host_t *vha)
 		if (ha->flags.scm_supported_a &&
 		    (ha->fw_attributes_ext[0] & FW_ATTR_EXT0_SCM_SUPPORTED)) {
 			ha->flags.scm_supported_f = 1;
-			memset(ha->sf_init_cb, 0, sizeof(struct init_sf_cb));
 			ha->sf_init_cb->flags |= BIT_13;
 		}
 		ql_log(ql_log_info, vha, 0x11a3, "SCM in FW: %s\n",
 		       (ha->flags.scm_supported_f) ? "Supported" :
 		       "Not Supported");
+
+		if (vha->flags.nvme2_enabled) {
+			/* set BIT_15 of special feature control block for SLER */
+			ha->sf_init_cb->flags |= BIT_15;
+			/* set BIT_14 of special feature control block for PI CTRL*/
+			ha->sf_init_cb->flags |= BIT_14;
+		}
 	}
 
 failed:
@@ -1822,7 +1837,7 @@ qla2x00_init_firmware(scsi_qla_host_t *vha, uint16_t size)
 		mcp->out_mb |= MBX_14|MBX_13|MBX_12|MBX_11|MBX_10;
 	}
 
-	if (ha->flags.scm_supported_f) {
+	if (ha->flags.scm_supported_f || vha->flags.nvme2_enabled) {
 		mcp->mb[1] |= BIT_1;
 		mcp->mb[16] = MSW(ha->sf_init_cb_dma);
 		mcp->mb[17] = LSW(ha->sf_init_cb_dma);
@@ -3979,7 +3994,8 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
 
 			if (fcport) {
 				fcport->plogi_nack_done_deadline = jiffies + HZ;
-				fcport->dm_login_expire = jiffies + 2*HZ;
+				fcport->dm_login_expire = jiffies +
+					QLA_N2N_WAIT_TIME * HZ;
 				fcport->scan_state = QLA_FCPORT_FOUND;
 				fcport->n2n_flag = 1;
 				fcport->keep_nport_handle = 1;
@@ -4925,8 +4941,6 @@ qla25xx_set_els_cmds_supported(scsi_qla_host_t *vha)
 		return QLA_MEMORY_ALLOC_FAILED;
 	}
 
-	memset(els_cmd_map, 0, ELS_CMD_MAP_SIZE);
-
 	/* List of Purex ELS */
 	cmd_opcode[0] = ELS_FPIN;
 	cmd_opcode[1] = ELS_RDP;
@@ -4958,51 +4972,12 @@ qla25xx_set_els_cmds_supported(scsi_qla_host_t *vha)
 		    "Done %s.\n", __func__);
 	}
 
-	dma_free_coherent(&ha->pdev->dev, DMA_POOL_SIZE,
+	dma_free_coherent(&ha->pdev->dev, ELS_CMD_MAP_SIZE,
 	   els_cmd_map, els_cmd_map_dma);
 
 	return rval;
 }
 
-int
-qla24xx_get_buffer_credits(scsi_qla_host_t *vha, struct buffer_credit_24xx *bbc,
-	dma_addr_t bbc_dma)
-{
-	mbx_cmd_t mc;
-	mbx_cmd_t *mcp = &mc;
-	int rval;
-
-	if (!IS_FWI2_CAPABLE(vha->hw))
-		return QLA_FUNCTION_FAILED;
-
-	ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x118e,
-	    "Entered %s.\n", __func__);
-
-	mcp->mb[0] = MBC_GET_RNID_PARAMS;
-	mcp->mb[1] = RNID_BUFFER_CREDITS << 8;
-	mcp->mb[2] = MSW(LSD(bbc_dma));
-	mcp->mb[3] = LSW(LSD(bbc_dma));
-	mcp->mb[6] = MSW(MSD(bbc_dma));
-	mcp->mb[7] = LSW(MSD(bbc_dma));
-	mcp->mb[8] = sizeof(*bbc) / sizeof(*bbc->parameter);
-	mcp->out_mb = MBX_8|MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
-	mcp->in_mb = MBX_1|MBX_0;
-	mcp->buf_size = sizeof(*bbc);
-	mcp->flags = MBX_DMA_IN;
-	mcp->tov = MBX_TOV_SECONDS;
-	rval = qla2x00_mailbox_command(vha, mcp);
-
-	if (rval != QLA_SUCCESS) {
-		ql_dbg(ql_dbg_mbx, vha, 0x118f,
-		    "Failed=%x mb[0]=%x,%x.\n", rval, mcp->mb[0], mcp->mb[1]);
-	} else {
-		ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1190,
-		    "Done %s.\n", __func__);
-	}
-
-	return rval;
-}
-
 static int
 qla2x00_read_asic_temperature(scsi_qla_host_t *vha, uint16_t *temp)
 {
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 15efe2f04b86..08cfe043ac66 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -808,11 +808,9 @@ static void qla_do_work(struct work_struct *work)
 {
 	unsigned long flags;
 	struct qla_qpair *qpair = container_of(work, struct qla_qpair, q_work);
-	struct scsi_qla_host *vha;
-	struct qla_hw_data *ha = qpair->hw;
+	struct scsi_qla_host *vha = qpair->vha;
 
 	spin_lock_irqsave(&qpair->qp_lock, flags);
-	vha = pci_get_drvdata(ha->pdev);
 	qla24xx_process_response_queue(vha, qpair->rsp);
 	spin_unlock_irqrestore(&qpair->qp_lock, flags);
 
diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
index 90bbc61f361b..5cc1bbb1ed74 100644
--- a/drivers/scsi/qla2xxx/qla_nvme.c
+++ b/drivers/scsi/qla2xxx/qla_nvme.c
@@ -42,7 +42,7 @@ int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
 	req.port_name = wwn_to_u64(fcport->port_name);
 	req.node_name = wwn_to_u64(fcport->node_name);
 	req.port_role = 0;
-	req.dev_loss_tmo = NVME_FC_DEV_LOSS_TMO;
+	req.dev_loss_tmo = 0;
 
 	if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
 		req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
@@ -69,6 +69,14 @@ int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
 		return ret;
 	}
 
+	if (fcport->nvme_prli_service_param & NVME_PRLI_SP_SLER)
+		ql_log(ql_log_info, vha, 0x212a,
+		       "PortID:%06x Supports SLER\n", req.port_id);
+
+	if (fcport->nvme_prli_service_param & NVME_PRLI_SP_PI_CTRL)
+		ql_log(ql_log_info, vha, 0x212b,
+		       "PortID:%06x Supports PI control\n", req.port_id);
+
 	rport = fcport->nvme_remote_port->private;
 	rport->fcport = fcport;
 
@@ -368,6 +376,7 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)
 	struct srb_iocb *nvme = &sp->u.iocb_cmd;
 	struct scatterlist *sgl, *sg;
 	struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
+	struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 	uint32_t        rval = QLA_SUCCESS;
 
 	/* Setup qpair pointers */
@@ -399,8 +408,6 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)
 	}
 
 	if (unlikely(!fd->sqid)) {
-		struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
-
 		if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 			nvme->u.nvme.aen_op = 1;
 			atomic_inc(&ha->nvme_active_aen_cnt);
@@ -428,8 +435,8 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)
 	/* No data transfer how do we check buffer len == 0?? */
 	if (fd->io_dir == NVMEFC_FCP_READ) {
 		cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
-		vha->qla_stats.input_bytes += fd->payload_length;
-		vha->qla_stats.input_requests++;
+		qpair->counters.input_bytes += fd->payload_length;
+		qpair->counters.input_requests++;
 	} else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 		cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
 		if ((vha->flags.nvme_first_burst) &&
@@ -441,11 +448,16 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)
 				cmd_pkt->control_flags |=
 					cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE);
 		}
-		vha->qla_stats.output_bytes += fd->payload_length;
-		vha->qla_stats.output_requests++;
+		qpair->counters.output_bytes += fd->payload_length;
+		qpair->counters.output_requests++;
 	} else if (fd->io_dir == 0) {
 		cmd_pkt->control_flags = 0;
 	}
+	/* Set BIT_13 of control flags for Async event */
+	if (vha->flags.nvme2_enabled &&
+	    cmd->sqe.common.opcode == nvme_admin_async_event) {
+		cmd_pkt->control_flags |= cpu_to_le16(CF_ADMIN_ASYNC_EVENT);
+	}
 
 	/* Set NPORT-ID */
 	cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
@@ -548,6 +560,14 @@ static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 		return rval;
 
 	vha = fcport->vha;
+
+	if (!(fcport->nvme_flag & NVME_FLAG_REGISTERED))
+		return rval;
+
+	if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags) ||
+	    (qpair && !qpair->fw_started) || fcport->deleted)
+		return -EBUSY;
+
 	/*
 	 * If we know the dev is going away while the transport is still sending
 	 * IO's return busy back to stall the IO Q.  This happens when the
@@ -683,7 +703,7 @@ int qla_nvme_register_hba(struct scsi_qla_host *vha)
 	struct nvme_fc_port_template *tmpl;
 	struct qla_hw_data *ha;
 	struct nvme_fc_port_info pinfo;
-	int ret = EINVAL;
+	int ret = -EINVAL;
 
 	if (!IS_ENABLED(CONFIG_NVME_FC))
 		return ret;
diff --git a/drivers/scsi/qla2xxx/qla_nvme.h b/drivers/scsi/qla2xxx/qla_nvme.h
index fbb844226630..5d5f115a77c3 100644
--- a/drivers/scsi/qla2xxx/qla_nvme.h
+++ b/drivers/scsi/qla2xxx/qla_nvme.h
@@ -14,9 +14,6 @@
 #include "qla_def.h"
 #include "qla_dsd.h"
 
-/* default dev loss time (seconds) before transport tears down ctrl */
-#define NVME_FC_DEV_LOSS_TMO  30
-
 #define NVME_ATIO_CMD_OFF 32
 #define NVME_FIRST_PACKET_CMDLEN (64 - NVME_ATIO_CMD_OFF)
 #define Q2T_NVME_NUM_TAGS 2048
@@ -57,6 +54,7 @@ struct cmd_nvme {
 	uint64_t rsvd;
 
 	__le16	control_flags;		/* Control Flags */
+#define CF_ADMIN_ASYNC_EVENT		BIT_13
 #define CF_NVME_FIRST_BURST_ENABLE	BIT_11
 #define CF_DIF_SEG_DESCR_ENABLE         BIT_3
 #define CF_DATA_SEG_DESCR_ENABLE        BIT_2
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 8da00ba54aec..2bb015b58609 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -40,6 +40,11 @@ module_param(ql2xfulldump_on_mpifail, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(ql2xfulldump_on_mpifail,
 		 "Set this to take full dump on MPI hang.");
 
+int ql2xenforce_iocb_limit = 1;
+module_param(ql2xenforce_iocb_limit, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ql2xenforce_iocb_limit,
+		 "Enforce IOCB throttling, to avoid FW congestion. (default: 0)");
+
 /*
  * CT6 CTX allocation cache
  */
@@ -1885,7 +1890,7 @@ qla2x00_config_dma_addressing(struct qla_hw_data *ha)
 	if (!dma_set_mask(&ha->pdev->dev, DMA_BIT_MASK(64))) {
 		/* Any upper-dword bits set? */
 		if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
-		    !pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
+		    !dma_set_coherent_mask(&ha->pdev->dev, DMA_BIT_MASK(64))) {
 			/* Ok, a 64bit DMA mask is applicable. */
 			ha->flags.enable_64bit_addressing = 1;
 			ha->isp_ops->calc_req_entries = qla2x00_calc_iocbs_64;
@@ -1895,7 +1900,7 @@ qla2x00_config_dma_addressing(struct qla_hw_data *ha)
 	}
 
 	dma_set_mask(&ha->pdev->dev, DMA_BIT_MASK(32));
-	pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(32));
+	dma_set_coherent_mask(&ha->pdev->dev, DMA_BIT_MASK(32));
 }
 
 static void
@@ -3316,6 +3321,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 		for (i = 0; i < ha->max_qpairs; i++)
 			qla2xxx_create_qpair(base_vha, 5, 0, startit);
 	}
+	qla_init_iocb_limit(base_vha);
 
 	if (ha->flags.running_gold_fw)
 		goto skip_dpc;
@@ -4225,6 +4231,7 @@ qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len,
 						&ha->sf_init_cb_dma);
 		if (!ha->sf_init_cb)
 			goto fail_sf_init_cb;
+		memset(ha->sf_init_cb, 0, sizeof(struct init_sf_cb));
 		ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0199,
 			   "sf_init_cb=%p.\n", ha->sf_init_cb);
 	}
@@ -4379,11 +4386,12 @@ int
 qla2x00_set_exlogins_buffer(scsi_qla_host_t *vha)
 {
 	int rval;
-	uint16_t	size, max_cnt, temp;
+	uint16_t	size, max_cnt;
+	uint32_t temp;
 	struct qla_hw_data *ha = vha->hw;
 
 	/* Return if we don't need to alloacate any extended logins */
-	if (!ql2xexlogins)
+	if (ql2xexlogins <= MAX_FIBRE_DEVICES_2400)
 		return QLA_SUCCESS;
 
 	if (!IS_EXLOGIN_OFFLD_CAPABLE(ha))
@@ -4872,7 +4880,7 @@ struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
 	}
 	INIT_DELAYED_WORK(&vha->scan.scan_work, qla_scan_work_fn);
 
-	sprintf(vha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, vha->host_no);
+	sprintf(vha->host_str, "%s_%lu", QLA2XXX_DRIVER_NAME, vha->host_no);
 	ql_dbg(ql_dbg_init, vha, 0x0041,
 	    "Allocated the host=%p hw=%p vha=%p dev_name=%s",
 	    vha->host, vha->hw, vha,
@@ -5001,7 +5009,7 @@ qla2x00_uevent_emit(struct scsi_qla_host *vha, u32 code)
 
 	switch (code) {
 	case QLA_UEVENT_CODE_FW_DUMP:
-		snprintf(event_string, sizeof(event_string), "FW_DUMP=%ld",
+		snprintf(event_string, sizeof(event_string), "FW_DUMP=%lu",
 		    vha->host_no);
 		break;
 	default:
@@ -5089,6 +5097,8 @@ void qla24xx_create_new_sess(struct scsi_qla_host *vha, struct qla_work_evt *e)
 
 			fcport->fc4_type = e->u.new_sess.fc4_type;
 			if (e->u.new_sess.fc4_type & FS_FCP_IS_N2N) {
+				fcport->dm_login_expire = jiffies +
+					QLA_N2N_WAIT_TIME * HZ;
 				fcport->fc4_type = FS_FC4TYPE_FCP;
 				fcport->n2n_flag = 1;
 				if (vha->flags.nvme_enabled)
@@ -5810,98 +5820,6 @@ qla25xx_rdp_rsp_reduce_size(struct scsi_qla_host *vha,
 	return true;
 }
 
-static uint
-qla25xx_rdp_port_speed_capability(struct qla_hw_data *ha)
-{
-	if (IS_CNA_CAPABLE(ha))
-		return RDP_PORT_SPEED_10GB;
-
-	if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
-		unsigned int speeds = 0;
-
-		if (ha->max_supported_speed == 2) {
-			if (ha->min_supported_speed <= 6)
-				speeds |= RDP_PORT_SPEED_64GB;
-		}
-
-		if (ha->max_supported_speed == 2 ||
-		    ha->max_supported_speed == 1) {
-			if (ha->min_supported_speed <= 5)
-				speeds |= RDP_PORT_SPEED_32GB;
-		}
-
-		if (ha->max_supported_speed == 2 ||
-		    ha->max_supported_speed == 1 ||
-		    ha->max_supported_speed == 0) {
-			if (ha->min_supported_speed <= 4)
-				speeds |= RDP_PORT_SPEED_16GB;
-		}
-
-		if (ha->max_supported_speed == 1 ||
-		    ha->max_supported_speed == 0) {
-			if (ha->min_supported_speed <= 3)
-				speeds |= RDP_PORT_SPEED_8GB;
-		}
-
-		if (ha->max_supported_speed == 0) {
-			if (ha->min_supported_speed <= 2)
-				speeds |= RDP_PORT_SPEED_4GB;
-		}
-
-		return speeds;
-	}
-
-	if (IS_QLA2031(ha))
-		return RDP_PORT_SPEED_16GB|RDP_PORT_SPEED_8GB|
-		       RDP_PORT_SPEED_4GB;
-
-	if (IS_QLA25XX(ha))
-		return RDP_PORT_SPEED_8GB|RDP_PORT_SPEED_4GB|
-		       RDP_PORT_SPEED_2GB|RDP_PORT_SPEED_1GB;
-
-	if (IS_QLA24XX_TYPE(ha))
-		return RDP_PORT_SPEED_4GB|RDP_PORT_SPEED_2GB|
-		       RDP_PORT_SPEED_1GB;
-
-	if (IS_QLA23XX(ha))
-		return RDP_PORT_SPEED_2GB|RDP_PORT_SPEED_1GB;
-
-	return RDP_PORT_SPEED_1GB;
-}
-
-static uint
-qla25xx_rdp_port_speed_currently(struct qla_hw_data *ha)
-{
-	switch (ha->link_data_rate) {
-	case PORT_SPEED_1GB:
-		return RDP_PORT_SPEED_1GB;
-
-	case PORT_SPEED_2GB:
-		return RDP_PORT_SPEED_2GB;
-
-	case PORT_SPEED_4GB:
-		return RDP_PORT_SPEED_4GB;
-
-	case PORT_SPEED_8GB:
-		return RDP_PORT_SPEED_8GB;
-
-	case PORT_SPEED_10GB:
-		return RDP_PORT_SPEED_10GB;
-
-	case PORT_SPEED_16GB:
-		return RDP_PORT_SPEED_16GB;
-
-	case PORT_SPEED_32GB:
-		return RDP_PORT_SPEED_32GB;
-
-	case PORT_SPEED_64GB:
-		return RDP_PORT_SPEED_64GB;
-
-	default:
-		return RDP_PORT_SPEED_UNKNOWN;
-	}
-}
-
 /*
  * Function Name: qla24xx_process_purex_iocb
  *
@@ -5921,12 +5839,10 @@ void qla24xx_process_purex_rdp(struct scsi_qla_host *vha,
 	dma_addr_t rsp_els_dma;
 	dma_addr_t rsp_payload_dma;
 	dma_addr_t stat_dma;
-	dma_addr_t bbc_dma;
 	dma_addr_t sfp_dma;
 	struct els_entry_24xx *rsp_els = NULL;
 	struct rdp_rsp_payload *rsp_payload = NULL;
 	struct link_statistics *stat = NULL;
-	struct buffer_credit_24xx *bbc = NULL;
 	uint8_t *sfp = NULL;
 	uint16_t sfp_flags = 0;
 	uint rsp_payload_length = sizeof(*rsp_payload);
@@ -5970,9 +5886,6 @@ void qla24xx_process_purex_rdp(struct scsi_qla_host *vha,
 	stat = dma_alloc_coherent(&ha->pdev->dev, sizeof(*stat),
 	    &stat_dma, GFP_KERNEL);
 
-	bbc = dma_alloc_coherent(&ha->pdev->dev, sizeof(*bbc),
-	    &bbc_dma, GFP_KERNEL);
-
 	/* Prepare Response IOCB */
 	rsp_els->entry_type = ELS_IOCB_TYPE;
 	rsp_els->entry_count = 1;
@@ -6068,9 +5981,9 @@ void qla24xx_process_purex_rdp(struct scsi_qla_host *vha,
 	rsp_payload->port_speed_desc.desc_len =
 	    cpu_to_be32(RDP_DESC_LEN(rsp_payload->port_speed_desc));
 	rsp_payload->port_speed_desc.speed_capab = cpu_to_be16(
-	    qla25xx_rdp_port_speed_capability(ha));
+	    qla25xx_fdmi_port_speed_capability(ha));
 	rsp_payload->port_speed_desc.operating_speed = cpu_to_be16(
-	    qla25xx_rdp_port_speed_currently(ha));
+	    qla25xx_fdmi_port_speed_currently(ha));
 
 	/* Link Error Status Descriptor */
 	rsp_payload->ls_err_desc.desc_tag = cpu_to_be32(0x10002);
@@ -6126,13 +6039,10 @@ void qla24xx_process_purex_rdp(struct scsi_qla_host *vha,
 	rsp_payload->buffer_credit_desc.attached_fcport_b2b = cpu_to_be32(0);
 	rsp_payload->buffer_credit_desc.fcport_rtt = cpu_to_be32(0);
 
-	if (bbc) {
-		memset(bbc, 0, sizeof(*bbc));
-		rval = qla24xx_get_buffer_credits(vha, bbc, bbc_dma);
-		if (!rval) {
-			rsp_payload->buffer_credit_desc.fcport_b2b =
-			    cpu_to_be32(LSW(bbc->parameter[0]));
-		}
+	if (ha->flags.plogi_template_valid) {
+		uint32_t tmp =
+		be16_to_cpu(ha->plogi_els_payld.fl_csp.sp_bb_cred);
+		rsp_payload->buffer_credit_desc.fcport_b2b = cpu_to_be32(tmp);
 	}
 
 	if (rsp_payload_length < sizeof(*rsp_payload))
@@ -6310,9 +6220,6 @@ send:
 	}
 
 dealloc:
-	if (bbc)
-		dma_free_coherent(&ha->pdev->dev, sizeof(*bbc),
-		    bbc, bbc_dma);
 	if (stat)
 		dma_free_coherent(&ha->pdev->dev, sizeof(*stat),
 		    stat, stat_dma);
@@ -7289,8 +7196,10 @@ qla2x00_timer(struct timer_list *t)
 	 * FC-NVME
 	 * see if the active AEN count has changed from what was last reported.
 	 */
+	index = atomic_read(&ha->nvme_active_aen_cnt);
 	if (!vha->vp_idx &&
-	    (atomic_read(&ha->nvme_active_aen_cnt) != ha->nvme_last_rptd_aen) &&
+	    (index != ha->nvme_last_rptd_aen) &&
+	    (index >= DEFAULT_ZIO_THRESHOLD) &&
 	    ha->zio_mode == QLA_ZIO_MODE_6 &&
 	    !ha->flags.host_shutting_down) {
 		ql_log(ql_log_info, vha, 0x3002,
@@ -7302,9 +7211,8 @@ qla2x00_timer(struct timer_list *t)
 	}
 
 	if (!vha->vp_idx &&
-	    (atomic_read(&ha->zio_threshold) != ha->last_zio_threshold) &&
-	    (ha->zio_mode == QLA_ZIO_MODE_6) &&
-	    (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha))) {
+	    atomic_read(&ha->zio_threshold) != ha->last_zio_threshold &&
+	    IS_ZIO_THRESHOLD_CAPABLE(ha)) {
 		ql_log(ql_log_info, vha, 0x3002,
 		    "Sched: Set ZIO exchange threshold to %d.\n",
 		    ha->last_zio_threshold);
@@ -8044,7 +7952,6 @@ module_exit(qla2x00_module_exit);
 MODULE_AUTHOR("QLogic Corporation");
 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
 MODULE_LICENSE("GPL");
-MODULE_VERSION(QLA2XXX_VERSION);
 MODULE_FIRMWARE(FW_FILE_ISP21XX);
 MODULE_FIRMWARE(FW_FILE_ISP22XX);
 MODULE_FIRMWARE(FW_FILE_ISP2300);
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 2d445bdb2129..a27a625839e6 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -1111,6 +1111,8 @@ void qlt_free_session_done(struct work_struct *work)
 	spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
 	sess->free_pending = 0;
 
+	qla2x00_dfs_remove_rport(vha, sess);
+
 	ql_dbg(ql_dbg_disc, vha, 0xf001,
 	    "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
 		sess, sess->port_name, vha->fcport_count);
@@ -1229,14 +1231,15 @@ void qlt_schedule_sess_for_deletion(struct fc_port *sess)
 	case DSC_DELETE_PEND:
 		return;
 	case DSC_DELETED:
-		if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
-			wake_up_all(&tgt->waitQ);
-		if (sess->vha->fcport_count == 0)
-			wake_up_all(&sess->vha->fcport_waitQ);
-
 		if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
-			!sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
+			!sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) {
+			if (tgt && tgt->tgt_stop && tgt->sess_count == 0)
+				wake_up_all(&tgt->waitQ);
+
+			if (sess->vha->fcport_count == 0)
+				wake_up_all(&sess->vha->fcport_waitQ);
 			return;
+		}
 		break;
 	case DSC_UPD_FCPORT:
 		/*
@@ -2025,7 +2028,7 @@ static void qlt_do_tmr_work(struct work_struct *work)
 	struct qla_tgt_mgmt_cmd *mcmd =
 		container_of(work, struct qla_tgt_mgmt_cmd, work);
 	struct qla_hw_data *ha = mcmd->vha->hw;
-	int rc = EIO;
+	int rc;
 	uint32_t tag;
 	unsigned long flags;
 
@@ -3781,7 +3784,7 @@ int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
 		    "multiple abort. %p transport_state %x, t_state %x, "
 		    "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
 		    cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
-		return EIO;
+		return -EIO;
 	}
 	cmd->aborted = 1;
 	cmd->trc_flags |= TRC_ABORT;
@@ -5668,7 +5671,7 @@ static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha,
 		/* found existing exchange */
 		qpair->retry_term_cnt++;
 		if (qpair->retry_term_cnt >= 5) {
-			rc = EIO;
+			rc = -EIO;
 			qpair->retry_term_cnt = 0;
 			ql_log(ql_log_warn, vha, 0xffff,
 			    "Unable to send ABTS Respond. Dumping firmware.\n");
diff --git a/drivers/scsi/qla2xxx/qla_tmpl.c b/drivers/scsi/qla2xxx/qla_tmpl.c
index 8dc82cfd38b2..0af3e7fa31f0 100644
--- a/drivers/scsi/qla2xxx/qla_tmpl.c
+++ b/drivers/scsi/qla2xxx/qla_tmpl.c
@@ -12,33 +12,6 @@
 #define IOBASE(vha)	IOBAR(ISPREG(vha))
 #define INVALID_ENTRY ((struct qla27xx_fwdt_entry *)0xffffffffffffffffUL)
 
-/* hardware_lock assumed held. */
-static void
-qla27xx_write_remote_reg(struct scsi_qla_host *vha,
-			 u32 addr, u32 data)
-{
-	struct device_reg_24xx __iomem *reg = &vha->hw->iobase->isp24;
-
-	ql_dbg(ql_dbg_misc, vha, 0xd300,
-	       "%s: addr/data = %xh/%xh\n", __func__, addr, data);
-
-	wrt_reg_dword(&reg->iobase_addr, 0x40);
-	wrt_reg_dword(&reg->iobase_c4, data);
-	wrt_reg_dword(&reg->iobase_window, addr);
-}
-
-void
-qla27xx_reset_mpi(scsi_qla_host_t *vha)
-{
-	ql_dbg(ql_dbg_misc + ql_dbg_verbose, vha, 0xd301,
-	       "Entered %s.\n", __func__);
-
-	qla27xx_write_remote_reg(vha, 0x104050, 0x40004);
-	qla27xx_write_remote_reg(vha, 0x10405c, 0x4);
-
-	vha->hw->stat.num_mpi_reset++;
-}
-
 static inline void
 qla27xx_insert16(uint16_t value, void *buf, ulong *len)
 {
@@ -906,8 +879,8 @@ qla27xx_driver_info(struct qla27xx_fwdt_template *tmp)
 	uint8_t v[] = { 0, 0, 0, 0, 0, 0 };
 
 	WARN_ON_ONCE(sscanf(qla2x00_version_str,
-			    "%hhu.%hhu.%hhu.%hhu.%hhu.%hhu",
-			    v+0, v+1, v+2, v+3, v+4, v+5) != 6);
+			    "%hhu.%hhu.%hhu.%hhu",
+			    v + 0, v + 1, v + 2, v + 3) != 4);
 
 	tmp->driver_info[0] = cpu_to_le32(
 		v[3] << 24 | v[2] << 16 | v[1] << 8 | v[0]);
@@ -1028,7 +1001,6 @@ void
 qla27xx_mpi_fwdump(scsi_qla_host_t *vha, int hardware_locked)
 {
 	ulong flags = 0;
-	bool need_mpi_reset = true;
 
 #ifndef __CHECKER__
 	if (!hardware_locked)
@@ -1036,14 +1008,20 @@ qla27xx_mpi_fwdump(scsi_qla_host_t *vha, int hardware_locked)
 #endif
 	if (!vha->hw->mpi_fw_dump) {
 		ql_log(ql_log_warn, vha, 0x02f3, "-> mpi_fwdump no buffer\n");
-	} else if (vha->hw->mpi_fw_dumped) {
-		ql_log(ql_log_warn, vha, 0x02f4,
-		       "-> MPI firmware already dumped (%p) -- ignoring request\n",
-		       vha->hw->mpi_fw_dump);
 	} else {
 		struct fwdt *fwdt = &vha->hw->fwdt[1];
 		ulong len;
 		void *buf = vha->hw->mpi_fw_dump;
+		bool walk_template_only = false;
+
+		if (vha->hw->mpi_fw_dumped) {
+			/* Use the spare area for any further dumps. */
+			buf += fwdt->dump_size;
+			walk_template_only = true;
+			ql_log(ql_log_warn, vha, 0x02f4,
+			       "-> MPI firmware already dumped -- dump saving to temporary buffer %p.\n",
+			       buf);
+		}
 
 		ql_log(ql_log_warn, vha, 0x02f5, "-> fwdt1 running...\n");
 		if (!fwdt->template) {
@@ -1058,9 +1036,10 @@ qla27xx_mpi_fwdump(scsi_qla_host_t *vha, int hardware_locked)
 			ql_log(ql_log_warn, vha, 0x02f7,
 			       "-> fwdt1 fwdump residual=%+ld\n",
 			       fwdt->dump_size - len);
-		} else {
-			need_mpi_reset = false;
 		}
+		vha->hw->stat.num_mpi_reset++;
+		if (walk_template_only)
+			goto bailout;
 
 		vha->hw->mpi_fw_dump_len = len;
 		vha->hw->mpi_fw_dumped = 1;
@@ -1072,8 +1051,6 @@ qla27xx_mpi_fwdump(scsi_qla_host_t *vha, int hardware_locked)
 	}
 
 bailout:
-	if (need_mpi_reset)
-		qla27xx_reset_mpi(vha);
 #ifndef __CHECKER__
 	if (!hardware_locked)
 		spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
diff --git a/drivers/scsi/qla2xxx/qla_version.h b/drivers/scsi/qla2xxx/qla_version.h
index 8ccd9ba1ddef..120e511d2ed5 100644
--- a/drivers/scsi/qla2xxx/qla_version.h
+++ b/drivers/scsi/qla2xxx/qla_version.h
@@ -7,9 +7,9 @@
 /*
  * Driver version
  */
-#define QLA2XXX_VERSION      "10.01.00.25-k"
+#define QLA2XXX_VERSION      "10.02.00.103-k"
 
 #define QLA_DRIVER_MAJOR_VER	10
-#define QLA_DRIVER_MINOR_VER	1
+#define QLA_DRIVER_MINOR_VER	2
 #define QLA_DRIVER_PATCH_VER	0
-#define QLA_DRIVER_BETA_VER	0
+#define QLA_DRIVER_BETA_VER	103
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 44bfe162654a..61017acd3458 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -850,7 +850,7 @@ static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show(			\
 	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,		\
 			struct tcm_qla2xxx_tpg, se_tpg);		\
 									\
-	return sprintf(page, "%u\n", tpg->tpg_attrib.name);	\
+	return sprintf(page, "%d\n", tpg->tpg_attrib.name);	\
 }									\
 									\
 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store(			\