scsi: qla2xxx: Preparation for Target MQ.

In Current code, Req Q 0, RespQ 0 & hardware_lock are the main resources
for sending and process completion of Target IO. These resources are now
referenced behind a new qpair/"struct qla_qpair base_qpair".  Main path
IO handle will access those resources via the qpair pointer in
preparation for Target MQ.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_attr.c

@@ -2096,7 +2096,7 @@ qla24xx_vport_create(struct fc_vport *fc_vport, bool disable)
 	}
 
 	if (qos) {
-		qpair = qla2xxx_create_qpair(vha, qos, vha->vp_idx);
+		qpair = qla2xxx_create_qpair(vha, qos, vha->vp_idx, true);
 		if (!qpair)
 			ql_log(ql_log_warn, vha, 0x7084,
 			    "Can't create qpair for VP[%d]\n",

drivers/scsi/qla2xxx/qla_def.h

@@ -3182,6 +3182,9 @@ struct qla_tc_param {
 #define QLA_PRECONFIG_VPORTS 32
 #define QLA_MAX_VPORTS_QLA24XX	128
 #define QLA_MAX_VPORTS_QLA25XX	256
+
+struct qla_qpair;
+
 /* Response queue data structure */
 struct rsp_que {
 	dma_addr_t  dma;
@@ -3201,6 +3204,7 @@ struct rsp_que {
 	struct qla_msix_entry *msix;
 	struct req_que *req;
 	srb_t *status_srb; /* status continuation entry */
+	struct qla_qpair *qpair;
 
 	dma_addr_t  dma_fx00;
 	response_t *ring_fx00;
@@ -3241,6 +3245,14 @@ struct req_que {
 struct qla_qpair {
 	spinlock_t qp_lock;
 	atomic_t ref_count;
+
+	/*
+	 * For qpair 0, qp_lock_ptr will point at hardware_lock due to
+	 * legacy code. For other Qpair(s), it will point at qp_lock.
+	 */
+	spinlock_t *qp_lock_ptr;
+	struct scsi_qla_host *vha;
+
 	/* distill these fields down to 'online=0/1'
 	 * ha->flags.eeh_busy
 	 * ha->flags.pci_channel_io_perm_failure
@@ -3252,10 +3264,7 @@ struct qla_qpair {
 	uint32_t delete_in_progress:1;
 
 	uint16_t id;			/* qp number used with FW */
-	uint16_t num_active_cmd;	/* cmds down at firmware */
-	cpumask_t cpu_mask; /* CPU mask for cpu affinity operation */
 	uint16_t vp_idx;		/* vport ID */
-
 	mempool_t *srb_mempool;
 
 	/* to do: New driver: move queues to here instead of pointers */
@@ -3266,7 +3275,7 @@ struct qla_qpair {
 	struct qla_hw_data *hw;
 	struct work_struct q_work;
 	struct list_head qp_list_elem; /* vha->qp_list */
-	struct scsi_qla_host *vha;
+	uint16_t cpuid;
 };
 
 /* Place holder for FW buffer parameters */

drivers/scsi/qla2xxx/qla_gbl.h

@@ -77,8 +77,7 @@ struct qla_work_evt *qla2x00_alloc_work(struct scsi_qla_host *,
     enum qla_work_type);
 extern int qla24xx_async_gnl(struct scsi_qla_host *, fc_port_t *);
 int qla2x00_post_work(struct scsi_qla_host *vha, struct qla_work_evt *e);
-extern void *qla2x00_alloc_iocbs(struct scsi_qla_host *, srb_t *);
-extern void *qla2x00_alloc_iocbs_ready(struct scsi_qla_host *, srb_t *);
+extern void *qla2x00_alloc_iocbs_ready(struct qla_qpair *, srb_t *);
 extern int qla24xx_update_fcport_fcp_prio(scsi_qla_host_t *, fc_port_t *);
 
 extern fc_port_t *
@@ -96,7 +95,7 @@ qla2x00_alloc_outstanding_cmds(struct qla_hw_data *, struct req_que *);
 extern int qla2x00_init_rings(scsi_qla_host_t *);
 extern uint8_t qla27xx_find_valid_image(struct scsi_qla_host *);
 extern struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *,
-	int, int);
+	int, int, bool);
 extern int qla2xxx_delete_qpair(struct scsi_qla_host *, struct qla_qpair *);
 void qla2x00_fcport_event_handler(scsi_qla_host_t *, struct event_arg *);
 int qla24xx_async_gpdb(struct scsi_qla_host *, fc_port_t *, u8);
@@ -255,7 +254,8 @@ extern int qla2x00_start_bidir(srb_t *, struct scsi_qla_host *, uint32_t);
 extern int qla2xxx_dif_start_scsi_mq(srb_t *);
 extern unsigned long qla2x00_get_async_timeout(struct scsi_qla_host *);
 
-extern void *qla2x00_alloc_iocbs(scsi_qla_host_t *, srb_t *);
+extern void *qla2x00_alloc_iocbs(struct scsi_qla_host *, srb_t *);
+extern void *__qla2x00_alloc_iocbs(struct qla_qpair *, srb_t *);
 extern int qla2x00_issue_marker(scsi_qla_host_t *, int);
 extern int qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *, srb_t *,
 	uint32_t *, uint16_t, struct qla_tc_param *);
@@ -663,9 +663,9 @@ extern int qla25xx_request_irq(struct qla_hw_data *, struct qla_qpair *,
 extern int qla25xx_init_req_que(struct scsi_qla_host *, struct req_que *);
 extern int qla25xx_init_rsp_que(struct scsi_qla_host *, struct rsp_que *);
 extern int qla25xx_create_req_que(struct qla_hw_data *, uint16_t, uint8_t,
-	uint16_t, int, uint8_t);
+	uint16_t, int, uint8_t, bool);
 extern int qla25xx_create_rsp_que(struct qla_hw_data *, uint16_t, uint8_t,
-	uint16_t, struct qla_qpair *);
+	uint16_t, struct qla_qpair *, bool);
 
 extern void qla2x00_init_response_q_entries(struct rsp_que *);
 extern int qla25xx_delete_req_que(struct scsi_qla_host *, struct req_que *);
@@ -839,7 +839,8 @@ extern int qla_get_exlogin_status(scsi_qla_host_t *, uint16_t *,
 extern int qla_set_exlogin_mem_cfg(scsi_qla_host_t *vha, dma_addr_t phys_addr);
 extern int qla_get_exchoffld_status(scsi_qla_host_t *, uint16_t *, uint16_t *);
 extern int qla_set_exchoffld_mem_cfg(scsi_qla_host_t *);
-extern void qlt_handle_abts_recv(struct scsi_qla_host *, response_t *);
+extern void qlt_handle_abts_recv(struct scsi_qla_host *, struct rsp_que *,
+	response_t *);
 
 int qla24xx_async_notify_ack(scsi_qla_host_t *, fc_port_t *,
 	struct imm_ntfy_from_isp *, int);

drivers/scsi/qla2xxx/qla_init.c

@@ -7578,7 +7578,8 @@ qla24xx_update_all_fcp_prio(scsi_qla_host_t *vha)
 	return ret;
 }
 
-struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos, int vp_idx)
+struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos,
+	int vp_idx, bool startqp)
 {
 	int rsp_id = 0;
 	int  req_id = 0;
@@ -7605,6 +7606,8 @@ struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos, int v
 
 		qpair->hw = vha->hw;
 		qpair->vha = vha;
+		qpair->qp_lock_ptr = &qpair->qp_lock;
+		spin_lock_init(&qpair->qp_lock);
 
 		/* Assign available que pair id */
 		mutex_lock(&ha->mq_lock);
@@ -7642,7 +7645,7 @@ struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos, int v
 		mutex_unlock(&ha->mq_lock);
 
 		/* Create response queue first */
-		rsp_id = qla25xx_create_rsp_que(ha, 0, 0, 0, qpair);
+		rsp_id = qla25xx_create_rsp_que(ha, 0, 0, 0, qpair, startqp);
 		if (!rsp_id) {
 			ql_log(ql_log_warn, vha, 0x0185,
 			    "Failed to create response queue.\n");
@@ -7652,7 +7655,8 @@ struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos, int v
 		qpair->rsp = ha->rsp_q_map[rsp_id];
 
 		/* Create request queue */
-		req_id = qla25xx_create_req_que(ha, 0, vp_idx, 0, rsp_id, qos);
+		req_id = qla25xx_create_req_que(ha, 0, vp_idx, 0, rsp_id, qos,
+		    startqp);
 		if (!req_id) {
 			ql_log(ql_log_warn, vha, 0x0186,
 			    "Failed to create request queue.\n");
@@ -7661,6 +7665,7 @@ struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos, int v
 
 		qpair->req = ha->req_q_map[req_id];
 		qpair->rsp->req = qpair->req;
+		qpair->rsp->qpair = qpair;
 
 		if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif) {
 			if (ha->fw_attributes & BIT_4)

drivers/scsi/qla2xxx/qla_iocb.c

@@ -2109,20 +2109,13 @@ queuing_error:
 /* Generic Control-SRB manipulation functions. */
 
 /* hardware_lock assumed to be held. */
-void *
-qla2x00_alloc_iocbs_ready(scsi_qla_host_t *vha, srb_t *sp)
-{
-	if (qla2x00_reset_active(vha))
-		return NULL;
-
-	return qla2x00_alloc_iocbs(vha, sp);
-}
 
 void *
-qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp)
+__qla2x00_alloc_iocbs(struct qla_qpair *qpair, srb_t *sp)
 {
+	scsi_qla_host_t *vha = qpair->vha;
 	struct qla_hw_data *ha = vha->hw;
-	struct req_que *req = ha->req_q_map[0];
+	struct req_que *req = qpair->req;
 	device_reg_t *reg = ISP_QUE_REG(ha, req->id);
 	uint32_t index, handle;
 	request_t *pkt;
@@ -2200,6 +2193,23 @@ queuing_error:
 	return pkt;
 }
 
+void *
+qla2x00_alloc_iocbs_ready(struct qla_qpair *qpair, srb_t *sp)
+{
+	scsi_qla_host_t *vha = qpair->vha;
+
+	if (qla2x00_reset_active(vha))
+		return NULL;
+
+	return __qla2x00_alloc_iocbs(qpair, sp);
+}
+
+void *
+qla2x00_alloc_iocbs(struct scsi_qla_host *vha, srb_t *sp)
+{
+	return __qla2x00_alloc_iocbs(vha->hw->base_qpair, sp);
+}
+
 static void
 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio)
 {

drivers/scsi/qla2xxx/qla_isr.c

@@ -2653,7 +2653,8 @@ qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
 	int res = DID_ERROR << 16;
 
 	ql_dbg(ql_dbg_async, vha, 0x502a,
-	    "type of error status in response: 0x%x\n", pkt->entry_status);
+	    "iocb type %xh with error status %xh, handle %xh, rspq id %d\n",
+	    pkt->entry_type, pkt->entry_status, pkt->handle, rsp->id);
 
 	if (que >= ha->max_req_queues || !ha->req_q_map[que])
 		goto fatal;
@@ -2805,7 +2806,8 @@ process_err:
 		case ABTS_RECV_24XX:
 			if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
 				/* ensure that the ATIO queue is empty */
-				qlt_handle_abts_recv(vha, (response_t *)pkt);
+				qlt_handle_abts_recv(vha, rsp,
+				    (response_t *)pkt);
 				break;
 			} else {
 				/* drop through */
@@ -2814,11 +2816,12 @@ process_err:
 		case ABTS_RESP_24XX:
 		case CTIO_TYPE7:
 		case CTIO_CRC2:
-			qlt_response_pkt_all_vps(vha, (response_t *)pkt);
+			qlt_response_pkt_all_vps(vha, rsp, (response_t *)pkt);
 			break;
 		case NOTIFY_ACK_TYPE:
 			if (pkt->handle == QLA_TGT_SKIP_HANDLE)
-				qlt_response_pkt_all_vps(vha, (response_t *)pkt);
+				qlt_response_pkt_all_vps(vha, rsp,
+				    (response_t *)pkt);
 			else
 				qla24xxx_nack_iocb_entry(vha, rsp->req,
 					(struct nack_to_isp *)pkt);

drivers/scsi/qla2xxx/qla_mid.c

@@ -640,7 +640,7 @@ qla25xx_delete_queues(struct scsi_qla_host *vha)
 
 int
 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
-	uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
+    uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos, bool startqp)
 {
 	int ret = 0;
 	struct req_que *req = NULL;
@@ -731,14 +731,16 @@ qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 	    req->ring_ptr, req->ring_index, req->cnt,
 	    req->id, req->max_q_depth);
 
-	ret = qla25xx_init_req_que(base_vha, req);
-	if (ret != QLA_SUCCESS) {
-		ql_log(ql_log_fatal, base_vha, 0x00df,
-		    "%s failed.\n", __func__);
-		mutex_lock(&ha->mq_lock);
-		clear_bit(que_id, ha->req_qid_map);
-		mutex_unlock(&ha->mq_lock);
-		goto que_failed;
+	if (startqp) {
+		ret = qla25xx_init_req_que(base_vha, req);
+		if (ret != QLA_SUCCESS) {
+			ql_log(ql_log_fatal, base_vha, 0x00df,
+			    "%s failed.\n", __func__);
+			mutex_lock(&ha->mq_lock);
+			clear_bit(que_id, ha->req_qid_map);
+			mutex_unlock(&ha->mq_lock);
+			goto que_failed;
+		}
 	}
 
 	return req->id;
@@ -765,7 +767,7 @@ static void qla_do_work(struct work_struct *work)
 /* create response queue */
 int
 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
-	uint8_t vp_idx, uint16_t rid, struct qla_qpair *qpair)
+    uint8_t vp_idx, uint16_t rid, struct qla_qpair *qpair, bool startqp)
 {
 	int ret = 0;
 	struct rsp_que *rsp = NULL;
@@ -843,14 +845,16 @@ qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 	if (ret)
 		goto que_failed;
 
-	ret = qla25xx_init_rsp_que(base_vha, rsp);
-	if (ret != QLA_SUCCESS) {
-		ql_log(ql_log_fatal, base_vha, 0x00e7,
-		    "%s failed.\n", __func__);
-		mutex_lock(&ha->mq_lock);
-		clear_bit(que_id, ha->rsp_qid_map);
-		mutex_unlock(&ha->mq_lock);
-		goto que_failed;
+	if (startqp) {
+		ret = qla25xx_init_rsp_que(base_vha, rsp);
+		if (ret != QLA_SUCCESS) {
+			ql_log(ql_log_fatal, base_vha, 0x00e7,
+			    "%s failed.\n", __func__);
+			mutex_lock(&ha->mq_lock);
+			clear_bit(que_id, ha->rsp_qid_map);
+			mutex_unlock(&ha->mq_lock);
+			goto que_failed;
+		}
 	}
 	rsp->req = NULL;
 

drivers/scsi/qla2xxx/qla_os.c

@@ -389,6 +389,13 @@ static int qla2x00_alloc_queues(struct qla_hw_data *ha, struct req_que *req,
 		ha->base_qpair->rsp = rsp;
 	}
 
+	rsp->qpair = ha->base_qpair;
+	rsp->req = req;
+	ha->base_qpair->vha = vha;
+	ha->base_qpair->qp_lock_ptr = &ha->hardware_lock;
+	ha->queue_pair_map[0] = ha->base_qpair;
+	set_bit(0, ha->qpair_qid_map);
+
 	/*
 	 * Make sure we record at least the request and response queue zero in
 	 * case we need to free them if part of the probe fails.
@@ -399,9 +406,10 @@ static int qla2x00_alloc_queues(struct qla_hw_data *ha, struct req_que *req,
 	set_bit(0, ha->req_qid_map);
 	return 1;
 
-fail_base_qpair:
-	kfree(ha->queue_pair_map);
 fail_qpair_map:
+	kfree(ha->base_qpair);
+	ha->base_qpair = NULL;
+fail_base_qpair:
 	kfree(ha->rsp_q_map);
 	ha->rsp_q_map = NULL;
 fail_rsp_map:
@@ -451,6 +459,15 @@ static void qla2x00_free_queues(struct qla_hw_data *ha)
 	int cnt;
 	unsigned long flags;
 
+	if (ha->queue_pair_map) {
+		kfree(ha->queue_pair_map);
+		ha->queue_pair_map = NULL;
+	}
+	if (ha->base_qpair) {
+		kfree(ha->base_qpair);
+		ha->base_qpair = NULL;
+	}
+
 	spin_lock_irqsave(&ha->hardware_lock, flags);
 	for (cnt = 0; cnt < ha->max_req_queues; cnt++) {
 		if (!test_bit(cnt, ha->req_qid_map))
@@ -3113,7 +3130,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 		/* Create start of day qpairs for Block MQ */
 		if (shost_use_blk_mq(host)) {
 			for (i = 0; i < ha->max_qpairs; i++)
-				qla2xxx_create_qpair(base_vha, 5, 0);
+				qla2xxx_create_qpair(base_vha, 5,  0, true);
 		}
 	}
 

drivers/scsi/qla2xxx/qla_target.c

@@ -110,16 +110,17 @@ enum fcp_resp_rsp_codes {
 /* Predefs for callbacks handed to qla2xxx LLD */
 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
 	struct atio_from_isp *pkt, uint8_t);
-static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
+static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
+	response_t *pkt);
 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
 	int fn, void *iocb, int flags);
-static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
+static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
 	*cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
 	struct atio_from_isp *atio, uint16_t status, int qfull);
 static void qlt_disable_vha(struct scsi_qla_host *vha);
 static void qlt_clear_tgt_db(struct qla_tgt *tgt);
-static void qlt_send_notify_ack(struct scsi_qla_host *vha,
+static void qlt_send_notify_ack(struct qla_qpair *qpair,
 	struct imm_ntfy_from_isp *ntfy,
 	uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
 	uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
@@ -130,6 +131,8 @@ static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
 void qlt_unreg_sess(struct fc_port *sess);
 static void qlt_24xx_handle_abts(struct scsi_qla_host *,
 	struct abts_recv_from_24xx *);
+static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
+    uint16_t);
 
 /*
  * Global Variables
@@ -243,7 +246,7 @@ static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
 
 
 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
-	struct atio_from_isp *atio,	uint8_t ha_locked)
+	struct atio_from_isp *atio, uint8_t ha_locked)
 {
 	struct qla_tgt_sess_op *u;
 	struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
@@ -274,7 +277,7 @@ out:
 	return;
 
 out_term:
-	qlt_send_term_exchange(vha, NULL, atio, ha_locked, 0);
+	qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
 	goto out;
 }
 
@@ -292,8 +295,8 @@ static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
 			ql_dbg(ql_dbg_async, vha, 0x502e,
 			    "Freeing unknown %s %p, because of Abort\n",
 			    "ATIO_TYPE7", u);
-			qlt_send_term_exchange(vha, NULL, &u->atio,
-			    ha_locked, 0);
+			qlt_send_term_exchange(vha->hw->base_qpair, NULL,
+			    &u->atio, ha_locked, 0);
 			goto abort;
 		}
 
@@ -306,8 +309,8 @@ static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
 			ql_dbg(ql_dbg_async, vha, 0x503a,
 			    "Freeing unknown %s %p, because tgt is being stopped\n",
 			    "ATIO_TYPE7", u);
-			qlt_send_term_exchange(vha, NULL, &u->atio,
-			    ha_locked, 0);
+			qlt_send_term_exchange(vha->hw->base_qpair, NULL,
+			    &u->atio, ha_locked, 0);
 		} else {
 			ql_dbg(ql_dbg_async, vha, 0x503d,
 			    "Reschedule u %p, vha %p, host %p\n", u, vha, host);
@@ -373,6 +376,8 @@ static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
 		struct imm_ntfy_from_isp *entry =
 		    (struct imm_ntfy_from_isp *)atio;
 
+		qlt_issue_marker(vha, ha_locked);
+
 		if ((entry->u.isp24.vp_index != 0xFF) &&
 		    (entry->u.isp24.nport_handle != 0xFFFF)) {
 			host = qlt_find_host_by_vp_idx(vha,
@@ -430,7 +435,8 @@ static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
 	return false;
 }
 
-void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
+void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
+	struct rsp_que *rsp, response_t *pkt)
 {
 	switch (pkt->entry_type) {
 	case CTIO_CRC2:
@@ -449,7 +455,7 @@ void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
 			    vha->vp_idx, entry->vp_index);
 			break;
 		}
-		qlt_response_pkt(host, pkt);
+		qlt_response_pkt(host, rsp, pkt);
 		break;
 	}
 
@@ -467,7 +473,7 @@ void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
 			    vha->vp_idx, entry->u.isp24.vp_index);
 			break;
 		}
-		qlt_response_pkt(host, pkt);
+		qlt_response_pkt(host, rsp, pkt);
 		break;
 	}
 
@@ -489,7 +495,7 @@ void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
 				break;
 			}
 		}
-		qlt_response_pkt(host, pkt);
+		qlt_response_pkt(host, rsp, pkt);
 		break;
 	}
 
@@ -506,7 +512,7 @@ void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
 			    "vp_index %d\n", vha->vp_idx, entry->vp_index);
 			break;
 		}
-		qlt_response_pkt(host, pkt);
+		qlt_response_pkt(host, rsp, pkt);
 		break;
 	}
 
@@ -523,12 +529,12 @@ void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
 			    "vp_index %d\n", vha->vp_idx, entry->vp_index);
 			break;
 		}
-		qlt_response_pkt(host, pkt);
+		qlt_response_pkt(host, rsp, pkt);
 		break;
 	}
 
 	default:
-		qlt_response_pkt(vha, pkt);
+		qlt_response_pkt(vha, rsp, pkt);
 		break;
 	}
 
@@ -1560,11 +1566,12 @@ static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
 /*
  * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
  */
-static void qlt_send_notify_ack(struct scsi_qla_host *vha,
+static void qlt_send_notify_ack(struct qla_qpair *qpair,
 	struct imm_ntfy_from_isp *ntfy,
 	uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
 	uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
 {
+	struct scsi_qla_host *vha = qpair->vha;
 	struct qla_hw_data *ha = vha->hw;
 	request_t *pkt;
 	struct nack_to_isp *nack;
@@ -1574,11 +1581,7 @@ static void qlt_send_notify_ack(struct scsi_qla_host *vha,
 
 	ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
 
-	/* Send marker if required */
-	if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
-		return;
-
-	pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
+	pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
 	if (!pkt) {
 		ql_dbg(ql_dbg_tgt, vha, 0xe049,
 		    "qla_target(%d): %s failed: unable to allocate "
@@ -1619,16 +1622,17 @@ static void qlt_send_notify_ack(struct scsi_qla_host *vha,
 
 	/* Memory Barrier */
 	wmb();
-	qla2x00_start_iocbs(vha, vha->req);
+	qla2x00_start_iocbs(vha, qpair->req);
 }
 
 /*
  * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
  */
-static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
+static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
 	struct abts_recv_from_24xx *abts, uint32_t status,
 	bool ids_reversed)
 {
+	struct scsi_qla_host *vha = qpair->vha;
 	struct qla_hw_data *ha = vha->hw;
 	struct abts_resp_to_24xx *resp;
 	uint32_t f_ctl;
@@ -1638,11 +1642,8 @@ static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
 	    "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
 	    ha, abts, status);
 
-	/* Send marker if required */
-	if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
-		return;
-
-	resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
+	resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
+	    NULL);
 	if (!resp) {
 		ql_dbg(ql_dbg_tgt, vha, 0xe04a,
 		    "qla_target(%d): %s failed: unable to allocate "
@@ -1698,7 +1699,7 @@ static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
 
 	/* Memory Barrier */
 	wmb();
-	qla2x00_start_iocbs(vha, vha->req);
+	qla2x00_start_iocbs(vha, qpair->req);
 }
 
 /*
@@ -1711,11 +1712,9 @@ static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
 
 	ql_dbg(ql_dbg_tgt, vha, 0xe007,
 	    "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
-	/* Send marker if required */
-	if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
-		return;
 
-	ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
+	ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(
+	    vha->hw->base_qpair, NULL);
 	if (ctio == NULL) {
 		ql_dbg(ql_dbg_tgt, vha, 0xe04b,
 		    "qla_target(%d): %s failed: unable to allocate "
@@ -1746,7 +1745,8 @@ static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
 	wmb();
 	qla2x00_start_iocbs(vha, vha->req);
 
-	qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
+	qlt_24xx_send_abts_resp(vha->hw->base_qpair,
+	    (struct abts_recv_from_24xx *)entry,
 	    FCP_TMF_CMPL, true);
 }
 
@@ -1861,7 +1861,8 @@ static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
 	if (!found_lun) {
 		if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
 			/* send TASK_ABORT response immediately */
-			qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
+			qlt_24xx_send_abts_resp(ha->base_qpair, abts,
+			    FCP_TMF_CMPL, false);
 			return 0;
 		} else {
 			ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
@@ -1889,6 +1890,7 @@ static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
 	memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
 	mcmd->reset_count = vha->hw->chip_reset;
 	mcmd->tmr_func = QLA_TGT_ABTS;
+	mcmd->qpair = ha->base_qpair;
 
 	rc = ha->tgt.tgt_ops->handle_tmr(mcmd, cmd->unpacked_lun, mcmd->tmr_func,
 	    abts->exchange_addr_to_abort);
@@ -1920,7 +1922,8 @@ static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
 		ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
 		    "qla_target(%d): ABTS: Abort Sequence not "
 		    "supported\n", vha->vp_idx);
-		qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+		qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
+		    false);
 		return;
 	}
 
@@ -1928,7 +1931,8 @@ static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
 		ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
 		    "qla_target(%d): ABTS: Unknown Exchange "
 		    "Address received\n", vha->vp_idx);
-		qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+		qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
+		    false);
 		return;
 	}
 
@@ -1954,8 +1958,8 @@ static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
 		spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
 
 		if (rc != 0) {
-			qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
-			    false);
+			qlt_24xx_send_abts_resp(ha->base_qpair, abts,
+			    FCP_TMF_REJECTED, false);
 		}
 		return;
 	}
@@ -1963,7 +1967,8 @@ static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
 
 
 	if (sess->deleted) {
-		qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+		qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
+		    false);
 		return;
 	}
 
@@ -1972,7 +1977,8 @@ static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
 		ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
 		    "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
 		    vha->vp_idx, rc);
-		qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+		qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
+		    false);
 		return;
 	}
 }
@@ -1980,9 +1986,10 @@ static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
 /*
  * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
  */
-static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
+static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
 	struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
 {
+	struct scsi_qla_host *ha = qpair->vha;
 	struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
 	struct ctio7_to_24xx *ctio;
 	uint16_t temp;
@@ -1991,11 +1998,8 @@ static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
 	    "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
 	    ha, atio, resp_code);
 
-	/* Send marker if required */
-	if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
-		return;
 
-	ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
+	ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
 	if (ctio == NULL) {
 		ql_dbg(ql_dbg_tgt, ha, 0xe04c,
 		    "qla_target(%d): %s failed: unable to allocate "
@@ -2025,7 +2029,7 @@ static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
 
 	/* Memory Barrier */
 	wmb();
-	qla2x00_start_iocbs(ha, ha->req);
+	qla2x00_start_iocbs(ha, qpair->req);
 }
 
 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
@@ -2105,12 +2109,13 @@ void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
 	struct scsi_qla_host *vha = mcmd->sess->vha;
 	struct qla_hw_data *ha = vha->hw;
 	unsigned long flags;
+	struct qla_qpair *qpair = mcmd->qpair;
 
 	ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
 	    "TM response mcmd (%p) status %#x state %#x",
 	    mcmd, mcmd->fc_tm_rsp, mcmd->flags);
 
-	spin_lock_irqsave(&ha->hardware_lock, flags);
+	spin_lock_irqsave(qpair->qp_lock_ptr, flags);
 
 	if (!vha->flags.online || mcmd->reset_count != ha->chip_reset) {
 		/*
@@ -2122,7 +2127,7 @@ void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
 			vha->flags.online, qla2x00_reset_active(vha),
 			mcmd->reset_count, ha->chip_reset);
 		ha->tgt.tgt_ops->free_mcmd(mcmd);
-		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
 		return;
 	}
 
@@ -2139,15 +2144,15 @@ void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
 			    mcmd->flags);
 			qlt_schedule_sess_for_deletion_lock(mcmd->sess);
 		} else {
-			qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
-				0, 0, 0, 0, 0, 0);
+			qlt_send_notify_ack(vha->hw->base_qpair,
+			    &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
 		}
 	} else {
 		if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
-			qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
+			qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts,
 			    mcmd->fc_tm_rsp, false);
 		else
-			qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
+			qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
 			    mcmd->fc_tm_rsp);
 	}
 	/*
@@ -2159,7 +2164,7 @@ void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
 	 * qlt_xmit_tm_rsp() returns here..
 	 */
 	ha->tgt.tgt_ops->free_mcmd(mcmd);
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
 }
 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
 
@@ -2247,25 +2252,25 @@ static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
 	dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
 }
 
-static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
+static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
 	uint32_t req_cnt)
 {
 	uint32_t cnt;
+	struct req_que *req = qpair->req;
 
-	if (vha->req->cnt < (req_cnt + 2)) {
-		cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
+	if (req->cnt < (req_cnt + 2)) {
+		cnt = (uint16_t)RD_REG_DWORD(req->req_q_out);
 
-		if  (vha->req->ring_index < cnt)
-			vha->req->cnt = cnt - vha->req->ring_index;
+		if  (req->ring_index < cnt)
+			req->cnt = cnt - req->ring_index;
 		else
-			vha->req->cnt = vha->req->length -
-			    (vha->req->ring_index - cnt);
+			req->cnt = req->length - (req->ring_index - cnt);
 
-		if (unlikely(vha->req->cnt < (req_cnt + 2)))
+		if (unlikely(req->cnt < (req_cnt + 2)))
 			return -EAGAIN;
 	}
 
-	vha->req->cnt -= req_cnt;
+	req->cnt -= req_cnt;
 
 	return 0;
 }
@@ -2273,26 +2278,27 @@ static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
 /*
  * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
  */
-static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
+static inline void *qlt_get_req_pkt(struct req_que *req)
 {
 	/* Adjust ring index. */
-	vha->req->ring_index++;
-	if (vha->req->ring_index == vha->req->length) {
-		vha->req->ring_index = 0;
-		vha->req->ring_ptr = vha->req->ring;
+	req->ring_index++;
+	if (req->ring_index == req->length) {
+		req->ring_index = 0;
+		req->ring_ptr = req->ring;
 	} else {
-		vha->req->ring_ptr++;
+		req->ring_ptr++;
 	}
-	return (cont_entry_t *)vha->req->ring_ptr;
+	return (cont_entry_t *)req->ring_ptr;
 }
 
 /* ha->hardware_lock supposed to be held on entry */
-static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
+static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
 {
+	struct scsi_qla_host *vha = qpair->vha;
 	uint32_t h;
 	int index;
 	uint8_t found = 0;
-	struct req_que *req = vha->req;
+	struct req_que *req = qpair->req;
 
 	h = req->current_outstanding_cmd;
 
@@ -2323,15 +2329,16 @@ static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
 }
 
 /* ha->hardware_lock supposed to be held on entry */
-static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
-	struct scsi_qla_host *vha)
+static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
+	struct qla_tgt_prm *prm)
 {
 	uint32_t h;
 	struct ctio7_to_24xx *pkt;
 	struct atio_from_isp *atio = &prm->cmd->atio;
 	uint16_t temp;
+	struct scsi_qla_host *vha = prm->cmd->vha;
 
-	pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
+	pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
 	prm->pkt = pkt;
 	memset(pkt, 0, sizeof(*pkt));
 
@@ -2339,7 +2346,7 @@ static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
 	pkt->entry_count = (uint8_t)prm->req_cnt;
 	pkt->vp_index = vha->vp_idx;
 
-	h = qlt_make_handle(vha);
+	h = qlt_make_handle(qpair);
 	if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
 		/*
 		 * CTIO type 7 from the firmware doesn't provide a way to
@@ -2351,8 +2358,9 @@ static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
 		vha->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
 	}
 
-	pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
-	pkt->nport_handle = prm->cmd->loop_id;
+	pkt->handle = MAKE_HANDLE(qpair->req->id, h);
+	pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
+	pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
 	pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
 	pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
 	pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
@@ -2381,7 +2389,8 @@ static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
 	/* Build continuation packets */
 	while (prm->seg_cnt > 0) {
 		cont_a64_entry_t *cont_pkt64 =
-			(cont_a64_entry_t *)qlt_get_req_pkt(vha);
+			(cont_a64_entry_t *)qlt_get_req_pkt(
+			   prm->cmd->qpair->req);
 
 		/*
 		 * Make sure that from cont_pkt64 none of
@@ -2546,10 +2555,6 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
 	prm->req_cnt = 1;
 	prm->add_status_pkt = 0;
 
-	/* Send marker if required */
-	if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
-		return -EFAULT;
-
 	if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
 		if  (qlt_pci_map_calc_cnt(prm) != 0)
 			return -EAGAIN;
@@ -2791,7 +2796,7 @@ qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
 }
 
 static inline int
-qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
+qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
 {
 	uint32_t		*cur_dsd;
 	uint32_t		transfer_length = 0;
@@ -2810,10 +2815,11 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
 	struct atio_from_isp *atio = &prm->cmd->atio;
 	struct qla_tc_param	tc;
 	uint16_t t16;
+	scsi_qla_host_t *vha = cmd->vha;
 
 	ha = vha->hw;
 
-	pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
+	pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
 	prm->pkt = pkt;
 	memset(pkt, 0, sizeof(*pkt));
 
@@ -2884,7 +2890,7 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
 	pkt->entry_count = 1;
 	pkt->vp_index = vha->vp_idx;
 
-	h = qlt_make_handle(vha);
+	h = qlt_make_handle(qpair);
 	if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
 		/*
 		 * CTIO type 7 from the firmware doesn't provide a way to
@@ -2893,9 +2899,10 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
 		 */
 		return -EAGAIN;
 	} else
-		vha->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
+		qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
 
-	pkt->handle  = h | CTIO_COMPLETION_HANDLE_MARK;
+	pkt->handle  = MAKE_HANDLE(qpair->req->id, h);
+	pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
 	pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
 	pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
 	pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
@@ -2999,7 +3006,7 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
 
 crc_queuing_error:
 	/* Cleanup will be performed by the caller */
-	vha->req->outstanding_cmds[h] = NULL;
+	qpair->req->outstanding_cmds[h] = NULL;
 
 	return QLA_FUNCTION_FAILED;
 }
@@ -3013,32 +3020,30 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
 {
 	struct scsi_qla_host *vha = cmd->vha;
 	struct qla_hw_data *ha = vha->hw;
+	struct qla_qpair *qpair = cmd->qpair;
 	struct ctio7_to_24xx *pkt;
 	struct qla_tgt_prm prm;
 	uint32_t full_req_cnt = 0;
 	unsigned long flags = 0;
 	int res;
 
-	spin_lock_irqsave(&ha->hardware_lock, flags);
 	if (cmd->sess && cmd->sess->deleted) {
 		cmd->state = QLA_TGT_STATE_PROCESSED;
 		if (cmd->sess->logout_completed)
 			/* no need to terminate. FW already freed exchange. */
 			qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
 		else
-			qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
-		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+			qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0);
 		return 0;
 	}
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
 	memset(&prm, 0, sizeof(prm));
 
 	ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
-	    "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
+	    "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
 	    (xmit_type & QLA_TGT_XMIT_STATUS) ?
 	    1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
-	    &cmd->se_cmd);
+	    &cmd->se_cmd, qpair->id);
 
 	res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
 	    &full_req_cnt);
@@ -3046,7 +3051,7 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
 		return res;
 	}
 
-	spin_lock_irqsave(&ha->hardware_lock, flags);
+	spin_lock_irqsave(qpair->qp_lock_ptr, flags);
 
 	if (xmit_type == QLA_TGT_XMIT_STATUS)
 		vha->tgt_counters.core_qla_snd_status++;
@@ -3064,21 +3069,21 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
 			"RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
 			vha->flags.online, qla2x00_reset_active(vha),
 			cmd->reset_count, ha->chip_reset);
-		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
 		return 0;
 	}
 
 	/* Does F/W have an IOCBs for this request */
-	res = qlt_check_reserve_free_req(vha, full_req_cnt);
+	res = qlt_check_reserve_free_req(qpair, full_req_cnt);
 	if (unlikely(res))
 		goto out_unmap_unlock;
 
 	if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
-		res = qlt_build_ctio_crc2_pkt(&prm, vha);
+		res = qlt_build_ctio_crc2_pkt(qpair, &prm);
 	else
-		res = qlt_24xx_build_ctio_pkt(&prm, vha);
+		res = qlt_24xx_build_ctio_pkt(qpair, &prm);
 	if (unlikely(res != 0)) {
-		vha->req->cnt += full_req_cnt;
+		qpair->req->cnt += full_req_cnt;
 		goto out_unmap_unlock;
 	}
 
@@ -3115,9 +3120,10 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
 			 * req_pkt().
 			 */
 			struct ctio7_to_24xx *ctio =
-				(struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
+				(struct ctio7_to_24xx *)qlt_get_req_pkt(
+				    qpair->req);
 
-			ql_dbg(ql_dbg_io, vha, 0x305e,
+			ql_dbg(ql_dbg_tgt, vha, 0x305e,
 			    "Building additional status packet 0x%p.\n",
 			    ctio);
 
@@ -3155,14 +3161,14 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
 
 	/* Memory Barrier */
 	wmb();
-	qla2x00_start_iocbs(vha, vha->req);
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	qla2x00_start_iocbs(vha, qpair->req);
+	spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
 
 	return 0;
 
 out_unmap_unlock:
 	qlt_unmap_sg(vha, cmd);
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
 
 	return res;
 }
@@ -3175,8 +3181,9 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
 	struct qla_hw_data *ha = vha->hw;
 	struct qla_tgt *tgt = cmd->tgt;
 	struct qla_tgt_prm prm;
-	unsigned long flags;
+	unsigned long flags = 0;
 	int res = 0;
+	struct qla_qpair *qpair = cmd->qpair;
 
 	memset(&prm, 0, sizeof(prm));
 	prm.cmd = cmd;
@@ -3184,16 +3191,10 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
 	prm.sg = NULL;
 	prm.req_cnt = 1;
 
-	/* Send marker if required */
-	if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
-		return -EIO;
-
 	/* Calculate number of entries and segments required */
 	if (qlt_pci_map_calc_cnt(&prm) != 0)
 		return -EAGAIN;
 
-	spin_lock_irqsave(&ha->hardware_lock, flags);
-
 	if (!ha->flags.fw_started || (cmd->reset_count != ha->chip_reset) ||
 	    (cmd->sess && cmd->sess->deleted)) {
 		/*
@@ -3206,21 +3207,21 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
 			"RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
 			vha->flags.online, qla2x00_reset_active(vha),
 			cmd->reset_count, ha->chip_reset);
-		spin_unlock_irqrestore(&ha->hardware_lock, flags);
 		return 0;
 	}
 
+	spin_lock_irqsave(qpair->qp_lock_ptr, flags);
 	/* Does F/W have an IOCBs for this request */
-	res = qlt_check_reserve_free_req(vha, prm.req_cnt);
+	res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
 	if (res != 0)
 		goto out_unlock_free_unmap;
 	if (cmd->se_cmd.prot_op)
-		res = qlt_build_ctio_crc2_pkt(&prm, vha);
+		res = qlt_build_ctio_crc2_pkt(qpair, &prm);
 	else
-		res = qlt_24xx_build_ctio_pkt(&prm, vha);
+		res = qlt_24xx_build_ctio_pkt(qpair, &prm);
 
 	if (unlikely(res != 0)) {
-		vha->req->cnt += prm.req_cnt;
+		qpair->req->cnt += prm.req_cnt;
 		goto out_unlock_free_unmap;
 	}
 
@@ -3236,14 +3237,14 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
 
 	/* Memory Barrier */
 	wmb();
-	qla2x00_start_iocbs(vha, vha->req);
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	qla2x00_start_iocbs(vha, qpair->req);
+	spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
 
 	return res;
 
 out_unlock_free_unmap:
 	qlt_unmap_sg(vha, cmd);
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
 
 	return res;
 }
@@ -3408,9 +3409,6 @@ static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
 	unsigned long flags = 0;
 	int rc;
 
-	if (qlt_issue_marker(vha, ha_locked) < 0)
-		return;
-
 	if (ha_locked) {
 		rc = __qlt_send_term_imm_notif(vha, imm);
 
@@ -3441,10 +3439,11 @@ done:
  * If hardware_lock held on entry, might drop it, then reaquire
  * This function sends the appropriate CTIO to ISP 2xxx or 24xx
  */
-static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
+static int __qlt_send_term_exchange(struct qla_qpair *qpair,
 	struct qla_tgt_cmd *cmd,
 	struct atio_from_isp *atio)
 {
+	struct scsi_qla_host *vha = qpair->vha;
 	struct ctio7_to_24xx *ctio24;
 	struct qla_hw_data *ha = vha->hw;
 	request_t *pkt;
@@ -3453,7 +3452,7 @@ static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
 
 	ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
 
-	pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
+	pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
 	if (pkt == NULL) {
 		ql_dbg(ql_dbg_tgt, vha, 0xe050,
 		    "qla_target(%d): %s failed: unable to allocate "
@@ -3499,28 +3498,32 @@ static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
 
 	/* Memory Barrier */
 	wmb();
-	qla2x00_start_iocbs(vha, vha->req);
+	qla2x00_start_iocbs(vha, qpair->req);
 	return ret;
 }
 
-static void qlt_send_term_exchange(struct scsi_qla_host *vha,
+static void qlt_send_term_exchange(struct qla_qpair *qpair,
 	struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
 	int ul_abort)
 {
+	struct scsi_qla_host *vha;
 	unsigned long flags = 0;
 	int rc;
 
-	if (qlt_issue_marker(vha, ha_locked) < 0)
-		return;
+	/* why use different vha? NPIV */
+	if (cmd)
+		vha = cmd->vha;
+	else
+		vha = qpair->vha;
 
 	if (ha_locked) {
-		rc = __qlt_send_term_exchange(vha, cmd, atio);
+		rc = __qlt_send_term_exchange(qpair, cmd, atio);
 		if (rc == -ENOMEM)
 			qlt_alloc_qfull_cmd(vha, atio, 0, 0);
 		goto done;
 	}
-	spin_lock_irqsave(&vha->hw->hardware_lock, flags);
-	rc = __qlt_send_term_exchange(vha, cmd, atio);
+	spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+	rc = __qlt_send_term_exchange(qpair, cmd, atio);
 	if (rc == -ENOMEM)
 		qlt_alloc_qfull_cmd(vha, atio, 0, 0);
 
@@ -3532,7 +3535,7 @@ done:
 	}
 
 	if (!ha_locked)
-		spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+		spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
 
 	return;
 }
@@ -3614,7 +3617,7 @@ int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
 	cmd->trc_flags |= TRC_ABORT;
 	spin_unlock_irqrestore(&cmd->cmd_lock, flags);
 
-	qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1);
+	qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
 	return 0;
 }
 EXPORT_SYMBOL(qlt_abort_cmd);
@@ -3653,10 +3656,11 @@ EXPORT_SYMBOL(qlt_free_cmd);
 /*
  * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
  */
-static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
+static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
 	struct qla_tgt_cmd *cmd, uint32_t status)
 {
 	int term = 0;
+	struct scsi_qla_host *vha = qpair->vha;
 
 	if (cmd->se_cmd.prot_op)
 		ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
@@ -3676,7 +3680,7 @@ static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
 		term = 1;
 
 	if (term)
-		qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
+		qlt_term_ctio_exchange(qpair, ctio, cmd, status);
 
 	return term;
 }
@@ -3684,35 +3688,45 @@ static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
 
 /* ha->hardware_lock supposed to be held on entry */
 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
-	uint32_t handle, void *ctio)
+	struct rsp_que *rsp, uint32_t handle, void *ctio)
 {
 	struct qla_tgt_cmd *cmd = NULL;
-	struct req_que *req = vha->req;
+	struct req_que *req;
+	int qid = GET_QID(handle);
+	uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
 
-	/* Clear out internal marks */
-	handle &= ~QLA_TGT_HANDLE_MASK;
+	if (unlikely(h == QLA_TGT_SKIP_HANDLE))
+		return NULL;
 
-	if (handle != QLA_TGT_NULL_HANDLE) {
-		if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
-			return NULL;
+	if (qid == rsp->req->id) {
+		req = rsp->req;
+	} else if (vha->hw->req_q_map[qid]) {
+		ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
+		    "qla_target(%d): CTIO completion with different QID %d handle %x\n",
+		    vha->vp_idx, rsp->id, handle);
+		req = vha->hw->req_q_map[qid];
+	} else {
+		return NULL;
+	}
 
-		handle &= QLA_CMD_HANDLE_MASK;
+	h &= QLA_CMD_HANDLE_MASK;
 
-		if (unlikely(handle > req->num_outstanding_cmds)) {
+	if (h != QLA_TGT_NULL_HANDLE) {
+		if (unlikely(h > req->num_outstanding_cmds)) {
 			ql_dbg(ql_dbg_tgt, vha, 0xe052,
 			    "qla_target(%d): Wrong handle %x received\n",
 			    vha->vp_idx, handle);
 			return NULL;
 		}
-		cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[handle];
-		if (unlikely((cmd == NULL) ||
-		    (cmd->cmd_type != TYPE_TGT_CMD))) {
+
+		cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h];
+		if (unlikely(cmd == NULL)) {
 			ql_dbg(ql_dbg_async, vha, 0xe053,
-			    "qla_target(%d): Suspicious: unable to find the command with handle %x cmd %p\n",
-			    vha->vp_idx, handle, cmd);
+			    "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
+				vha->vp_idx, handle, req->id, rsp->id);
 			return NULL;
 		}
-		req->outstanding_cmds[handle] = NULL;
+		req->outstanding_cmds[h] = NULL;
 	} else if (ctio != NULL) {
 		/* We can't get loop ID from CTIO7 */
 		ql_dbg(ql_dbg_tgt, vha, 0xe054,
@@ -3729,29 +3743,26 @@ void
 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
 {
 	struct qla_hw_data *ha = vha->hw;
-	uint32_t handle;
 
 	if (cmd->sg_mapped)
 		qlt_unmap_sg(vha, cmd);
 
-	handle = qlt_make_handle(vha);
-
 	/* TODO: fix debug message type and ids. */
 	if (cmd->state == QLA_TGT_STATE_PROCESSED) {
 		ql_dbg(ql_dbg_io, vha, 0xff00,
-		    "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
+		    "HOST-ABORT: state=PROCESSED.\n");
 	} else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
 		cmd->write_data_transferred = 0;
 		cmd->state = QLA_TGT_STATE_DATA_IN;
 
 		ql_dbg(ql_dbg_io, vha, 0xff01,
-		    "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
+		    "HOST-ABORT: state=DATA_IN.\n");
 
 		ha->tgt.tgt_ops->handle_data(cmd);
 		return;
 	} else {
 		ql_dbg(ql_dbg_io, vha, 0xff03,
-		    "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
+		    "HOST-ABORT: state=BAD(%d).\n",
 		    cmd->state);
 		dump_stack();
 	}
@@ -3763,12 +3774,13 @@ qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
 /*
  * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
  */
-static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
-	uint32_t status, void *ctio)
+static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
+    struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
 {
 	struct qla_hw_data *ha = vha->hw;
 	struct se_cmd *se_cmd;
 	struct qla_tgt_cmd *cmd;
+	struct qla_qpair *qpair = rsp->qpair;
 
 	if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
 		/* That could happen only in case of an error/reset/abort */
@@ -3780,7 +3792,7 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
 		return;
 	}
 
-	cmd = qlt_ctio_to_cmd(vha, handle, ctio);
+	cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
 	if (cmd == NULL)
 		return;
 
@@ -3864,7 +3876,7 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
 		if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
 		    (!cmd->aborted)) {
 			cmd->trc_flags |= TRC_CTIO_ERR;
-			if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
+			if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
 				return;
 		}
 	}
@@ -3947,6 +3959,7 @@ static void __qlt_do_work(struct qla_tgt_cmd *cmd)
 	unsigned long flags;
 	uint32_t data_length;
 	int ret, fcp_task_attr, data_dir, bidi = 0;
+	struct qla_qpair *qpair = cmd->qpair;
 
 	cmd->cmd_in_wq = 0;
 	cmd->trc_flags |= TRC_DO_WORK;
@@ -4002,12 +4015,12 @@ out_term:
 	 * argument to qlt_send_term_exchange() and free the memory here.
 	 */
 	cmd->trc_flags |= TRC_DO_WORK_ERR;
-	spin_lock_irqsave(&ha->hardware_lock, flags);
-	qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0);
+	spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+	qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
 
 	qlt_decr_num_pend_cmds(vha);
 	percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
 
 	spin_lock_irqsave(&ha->tgt.sess_lock, flags);
 	ha->tgt.tgt_ops->put_sess(sess);
@@ -4056,13 +4069,12 @@ static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
 	cmd->jiffies_at_alloc = get_jiffies_64();
 
 	cmd->reset_count = vha->hw->chip_reset;
+	cmd->qpair = vha->hw->base_qpair;
+	cmd->se_cmd.cpuid = cmd->qpair->cpuid;
 
 	return cmd;
 }
 
-static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
-			  uint16_t);
-
 static void qlt_create_sess_from_atio(struct work_struct *work)
 {
 	struct qla_tgt_sess_op *op = container_of(work,
@@ -4108,10 +4120,15 @@ static void qlt_create_sess_from_atio(struct work_struct *work)
 	 */
 	cmd = qlt_get_tag(vha, sess, &op->atio);
 	if (!cmd) {
-		spin_lock_irqsave(&ha->hardware_lock, flags);
-		qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
+		struct qla_qpair *qpair = ha->base_qpair;
+
+		spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+		qlt_send_busy(qpair, &op->atio, SAM_STAT_BUSY);
+		spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+
+		spin_lock_irqsave(&ha->tgt.sess_lock, flags);
 		ha->tgt.tgt_ops->put_sess(sess);
-		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
 		kfree(op);
 		return;
 	}
@@ -4124,9 +4141,7 @@ static void qlt_create_sess_from_atio(struct work_struct *work)
 	kfree(op);
 	return;
 out_term:
-	spin_lock_irqsave(&ha->hardware_lock, flags);
-	qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0);
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	qlt_send_term_exchange(vha->hw->base_qpair, NULL, &op->atio, 0, 0);
 	kfree(op);
 }
 
@@ -4197,8 +4212,6 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
 
 	cmd->cmd_in_wq = 1;
 	cmd->trc_flags |= TRC_NEW_CMD;
-	cmd->se_cmd.cpuid = ha->msix_count ?
-		ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND;
 
 	spin_lock_irqsave(&vha->cmd_list_lock, flags);
 	list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
@@ -4215,8 +4228,8 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
 	} else {
 		queue_work(qla_tgt_wq, &cmd->work);
 	}
-	return 0;
 
+	return 0;
 }
 
 /* ha->hardware_lock supposed to be held on entry */
@@ -4247,6 +4260,7 @@ static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
 	mcmd->tmr_func = fn;
 	mcmd->flags = flags;
 	mcmd->reset_count = vha->hw->chip_reset;
+	mcmd->qpair = ha->base_qpair;
 
 	switch (fn) {
 	case QLA_TGT_LUN_RESET:
@@ -4330,6 +4344,7 @@ static int __qlt_abort_task(struct scsi_qla_host *vha,
 	    scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
 	mcmd->reset_count = vha->hw->chip_reset;
 	mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
+	mcmd->qpair = ha->base_qpair;
 
 	rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
 	    le16_to_cpu(iocb->u.isp2x.seq_id));
@@ -4756,8 +4771,8 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
 	{
 		struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
 		if (tgt->link_reinit_iocb_pending) {
-			qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
-			    0, 0, 0, 0, 0, 0);
+			qlt_send_notify_ack(ha->base_qpair,
+			    &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
 			tgt->link_reinit_iocb_pending = 0;
 		}
 
@@ -4820,8 +4835,8 @@ static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
 		    le16_to_cpu(iocb->u.isp24.nport_handle),
 		    iocb->u.isp24.status_subcode);
 		if (tgt->link_reinit_iocb_pending) {
-			qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
-			    0, 0, 0, 0, 0, 0);
+			qlt_send_notify_ack(ha->base_qpair,
+			    &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
 		}
 		memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
 		tgt->link_reinit_iocb_pending = 1;
@@ -4915,16 +4930,18 @@ static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
 	}
 
 	if (send_notify_ack)
-		qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
+		qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
+		    0, 0);
 }
 
 /*
  * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
  * This function sends busy to ISP 2xxx or 24xx.
  */
-static int __qlt_send_busy(struct scsi_qla_host *vha,
+static int __qlt_send_busy(struct qla_qpair *qpair,
 	struct atio_from_isp *atio, uint16_t status)
 {
+	struct scsi_qla_host *vha = qpair->vha;
 	struct ctio7_to_24xx *ctio24;
 	struct qla_hw_data *ha = vha->hw;
 	request_t *pkt;
@@ -4937,12 +4954,12 @@ static int __qlt_send_busy(struct scsi_qla_host *vha,
 	    atio->u.isp24.fcp_hdr.s_id);
 	spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
 	if (!sess) {
-		qlt_send_term_exchange(vha, NULL, atio, 1, 0);
+		qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
 		return 0;
 	}
 	/* Sending marker isn't necessary, since we called from ISR */
 
-	pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
+	pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
 	if (!pkt) {
 		ql_dbg(ql_dbg_io, vha, 0x3063,
 		    "qla_target(%d): %s failed: unable to allocate "
@@ -4975,7 +4992,7 @@ static int __qlt_send_busy(struct scsi_qla_host *vha,
 	ctio24->u.status1.scsi_status = cpu_to_le16(status);
 	/* Memory Barrier */
 	wmb();
-	qla2x00_start_iocbs(vha, vha->req);
+	qla2x00_start_iocbs(vha, qpair->req);
 	return 0;
 }
 
@@ -4994,6 +5011,7 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
 	struct se_session *se_sess;
 	struct qla_tgt_cmd *cmd;
 	int tag;
+	unsigned long flags;
 
 	if (unlikely(tgt->tgt_stop)) {
 		ql_dbg(ql_dbg_io, vha, 0x300a,
@@ -5054,6 +5072,7 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
 	cmd->vha = vha;
 	cmd->reset_count = vha->hw->chip_reset;
 	cmd->q_full = 1;
+	cmd->qpair = ha->base_qpair;
 
 	if (qfull) {
 		cmd->q_full = 1;
@@ -5062,6 +5081,7 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
 	} else
 		cmd->term_exchg = 1;
 
+	spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
 	list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
 
 	vha->hw->tgt.num_qfull_cmds_alloc++;
@@ -5069,35 +5089,41 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
 		vha->qla_stats.stat_max_qfull_cmds_alloc)
 		vha->qla_stats.stat_max_qfull_cmds_alloc =
 			vha->hw->tgt.num_qfull_cmds_alloc;
+	spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
 }
 
 int
-qlt_free_qfull_cmds(struct scsi_qla_host *vha)
+qlt_free_qfull_cmds(struct qla_qpair *qpair)
 {
+	struct scsi_qla_host *vha = qpair->vha;
 	struct qla_hw_data *ha = vha->hw;
 	unsigned long flags;
 	struct qla_tgt_cmd *cmd, *tcmd;
-	struct list_head free_list;
+	struct list_head free_list, q_full_list;
 	int rc = 0;
 
 	if (list_empty(&ha->tgt.q_full_list))
 		return 0;
 
 	INIT_LIST_HEAD(&free_list);
+	INIT_LIST_HEAD(&q_full_list);
 
-	spin_lock_irqsave(&vha->hw->hardware_lock, flags);
-
+	spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
 	if (list_empty(&ha->tgt.q_full_list)) {
-		spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+		spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
 		return 0;
 	}
 
-	list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
+	list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
+	spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
+
+	spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+	list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
 		if (cmd->q_full)
 			/* cmd->state is a borrowed field to hold status */
-			rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
+			rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
 		else if (cmd->term_exchg)
-			rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
+			rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
 
 		if (rc == -ENOMEM)
 			break;
@@ -5121,7 +5147,7 @@ qlt_free_qfull_cmds(struct scsi_qla_host *vha)
 		/* piggy back on hardware_lock for protection */
 		vha->hw->tgt.num_qfull_cmds_alloc--;
 	}
-	spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+	spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
 
 	cmd = NULL;
 
@@ -5132,23 +5158,31 @@ qlt_free_qfull_cmds(struct scsi_qla_host *vha)
 		 */
 		qlt_free_cmd(cmd);
 	}
+
+	if (!list_empty(&q_full_list)) {
+		spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
+		list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
+		spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
+	}
+
 	return rc;
 }
 
 static void
-qlt_send_busy(struct scsi_qla_host *vha,
-	struct atio_from_isp *atio, uint16_t status)
+qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
+    uint16_t status)
 {
 	int rc = 0;
+	struct scsi_qla_host *vha = qpair->vha;
 
-	rc = __qlt_send_busy(vha, atio, status);
+	rc = __qlt_send_busy(qpair, atio, status);
 	if (rc == -ENOMEM)
 		qlt_alloc_qfull_cmd(vha, atio, status, 1);
 }
 
 static int
-qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
-	struct atio_from_isp *atio, bool ha_locked)
+qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
+	struct atio_from_isp *atio, uint8_t ha_locked)
 {
 	struct qla_hw_data *ha = vha->hw;
 	uint16_t status;
@@ -5160,7 +5194,7 @@ qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
 	if (!ha_locked)
 		spin_lock_irqsave(&ha->hardware_lock, flags);
 	status = temp_sam_status;
-	qlt_send_busy(vha, atio, status);
+	qlt_send_busy(qpair, atio, status);
 	if (!ha_locked)
 		spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
@@ -5199,16 +5233,17 @@ static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
 			    "sending QUEUE_FULL\n", vha->vp_idx);
 			if (!ha_locked)
 				spin_lock_irqsave(&ha->hardware_lock, flags);
-			qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
+			qlt_send_busy(ha->base_qpair, atio,
+			    SAM_STAT_TASK_SET_FULL);
 			if (!ha_locked)
-				spin_unlock_irqrestore(&ha->hardware_lock, flags);
+				spin_unlock_irqrestore(&ha->hardware_lock,
+				    flags);
 			break;
 		}
 
-
-
 		if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
-			rc = qlt_chk_qfull_thresh_hold(vha, atio, ha_locked);
+			rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
+			    atio, ha_locked);
 			if (rc != 0) {
 				tgt->atio_irq_cmd_count--;
 				return;
@@ -5220,19 +5255,19 @@ static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
 		if (unlikely(rc != 0)) {
 			if (rc == -ESRCH) {
 				if (!ha_locked)
-					spin_lock_irqsave
-						(&ha->hardware_lock, flags);
+					spin_lock_irqsave(&ha->hardware_lock,
+					    flags);
 
 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
-				qlt_send_busy(vha, atio, SAM_STAT_BUSY);
+				qlt_send_busy(ha->base_qpair, atio,
+				    SAM_STAT_BUSY);
 #else
-				qlt_send_term_exchange(vha, NULL, atio, 1, 0);
+				qlt_send_term_exchange(ha->base_qpair, NULL,
+				    atio, 1, 0);
 #endif
-
 				if (!ha_locked)
-					spin_unlock_irqrestore
-						(&ha->hardware_lock, flags);
-
+					spin_unlock_irqrestore(
+					    &ha->hardware_lock, flags);
 			} else {
 				if (tgt->tgt_stop) {
 					ql_dbg(ql_dbg_tgt, vha, 0xe059,
@@ -5247,7 +5282,8 @@ static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
 					if (!ha_locked)
 						spin_lock_irqsave(
 						    &ha->hardware_lock, flags);
-					qlt_send_busy(vha, atio, SAM_STAT_BUSY);
+					qlt_send_busy(ha->base_qpair,
+					    atio, SAM_STAT_BUSY);
 					if (!ha_locked)
 						spin_unlock_irqrestore(
 						    &ha->hardware_lock, flags);
@@ -5288,7 +5324,8 @@ static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
 
 /* ha->hardware_lock supposed to be held on entry */
 /* called via callback from qla2xxx */
-static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
+static void qlt_response_pkt(struct scsi_qla_host *vha,
+	struct rsp_que *rsp, response_t *pkt)
 {
 	struct qla_hw_data *ha = vha->hw;
 	struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
@@ -5310,7 +5347,7 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
 	case CTIO_TYPE7:
 	{
 		struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
-		qlt_do_ctio_completion(vha, entry->handle,
+		qlt_do_ctio_completion(vha, rsp, entry->handle,
 		    le16_to_cpu(entry->status)|(pkt->entry_status << 16),
 		    entry);
 		break;
@@ -5329,7 +5366,7 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
 			break;
 		}
 
-		rc = qlt_chk_qfull_thresh_hold(vha, atio, true);
+		rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
 		if (rc != 0)
 			return;
 
@@ -5337,9 +5374,9 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
 		if (unlikely(rc != 0)) {
 			if (rc == -ESRCH) {
 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
-				qlt_send_busy(vha, atio, 0);
+				qlt_send_busy(rsp->qpair, atio, 0);
 #else
-				qlt_send_term_exchange(vha, NULL, atio, 1, 0);
+				qlt_send_term_exchange(rsp->qpair, NULL, atio, 1, 0);
 #endif
 			} else {
 				if (tgt->tgt_stop) {
@@ -5347,14 +5384,14 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
 					    "qla_target: Unable to send "
 					    "command to target, sending TERM "
 					    "EXCHANGE for rsp\n");
-					qlt_send_term_exchange(vha, NULL,
+					qlt_send_term_exchange(rsp->qpair, NULL,
 					    atio, 1, 0);
 				} else {
 					ql_dbg(ql_dbg_tgt, vha, 0xe060,
 					    "qla_target(%d): Unable to send "
 					    "command to target, sending BUSY "
 					    "status\n", vha->vp_idx);
-					qlt_send_busy(vha, atio, 0);
+					qlt_send_busy(rsp->qpair, atio, 0);
 				}
 			}
 		}
@@ -5364,7 +5401,7 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
 	case CONTINUE_TGT_IO_TYPE:
 	{
 		struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
-		qlt_do_ctio_completion(vha, entry->handle,
+		qlt_do_ctio_completion(vha, rsp, entry->handle,
 		    le16_to_cpu(entry->status)|(pkt->entry_status << 16),
 		    entry);
 		break;
@@ -5373,7 +5410,7 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
 	case CTIO_A64_TYPE:
 	{
 		struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
-		qlt_do_ctio_completion(vha, entry->handle,
+		qlt_do_ctio_completion(vha, rsp, entry->handle,
 		    le16_to_cpu(entry->status)|(pkt->entry_status << 16),
 		    entry);
 		break;
@@ -5508,7 +5545,8 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
 		    le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
 		    le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
 		if (tgt->link_reinit_iocb_pending) {
-			qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
+			qlt_send_notify_ack(ha->base_qpair,
+			    (void *)&tgt->link_reinit_iocb,
 			    0, 0, 0, 0, 0, 0);
 			tgt->link_reinit_iocb_pending = 0;
 		}
@@ -5790,7 +5828,8 @@ out_term2:
 
 out_term:
 	spin_lock_irqsave(&ha->hardware_lock, flags);
-	qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
+	qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
+	    FCP_TMF_REJECTED, false);
 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 }
 
@@ -5857,7 +5896,7 @@ out_term2:
 		ha->tgt.tgt_ops->put_sess(sess);
 	spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
 out_term:
-	qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0);
+	qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
 }
 
 static void qlt_sess_work_fn(struct work_struct *work)
@@ -6160,7 +6199,6 @@ qlt_enable_vha(struct scsi_qla_host *vha)
 	struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
 	unsigned long flags;
 	scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
-	int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER;
 
 	if (!tgt) {
 		ql_dbg(ql_dbg_tgt, vha, 0xe069,
@@ -6179,17 +6217,6 @@ qlt_enable_vha(struct scsi_qla_host *vha)
 		qla24xx_disable_vp(vha);
 		qla24xx_enable_vp(vha);
 	} else {
-		if (ha->msix_entries) {
-			ql_dbg(ql_dbg_tgt, vha, 0xe081,
-			    "%s: host%ld : vector %d cpu %d\n",
-			    __func__, vha->host_no,
-			    ha->msix_entries[rspq_ent].vector,
-			    ha->msix_entries[rspq_ent].cpuid);
-
-			ha->tgt.rspq_vector_cpuid =
-			    ha->msix_entries[rspq_ent].cpuid;
-		}
-
 		set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
 		qla2xxx_wake_dpc(base_vha);
 		qla2x00_wait_for_hba_online(base_vha);
@@ -6323,7 +6350,8 @@ qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
 			    le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
 
 			adjust_corrupted_atio(pkt);
-			qlt_send_term_exchange(vha, NULL, pkt, ha_locked, 0);
+			qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
+			    ha_locked, 0);
 		} else {
 			qlt_24xx_atio_pkt_all_vps(vha,
 			    (struct atio_from_isp *)pkt, ha_locked);
@@ -6674,14 +6702,15 @@ qlt_handle_abts_recv_work(struct work_struct *work)
 	spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
 
 	spin_lock_irqsave(&ha->hardware_lock, flags);
-	qlt_response_pkt_all_vps(vha, (response_t *)&op->atio);
+	qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
 	kfree(op);
 }
 
 void
-qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt)
+qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
+    response_t *pkt)
 {
 	struct qla_tgt_sess_op *op;
 
@@ -6691,13 +6720,14 @@ qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt)
 		/* do not reach for ATIO queue here.  This is best effort err
 		 * recovery at this point.
 		 */
-		qlt_response_pkt_all_vps(vha, pkt);
+		qlt_response_pkt_all_vps(vha, rsp, pkt);
 		return;
 	}
 
 	memcpy(&op->atio, pkt, sizeof(*pkt));
 	op->vha = vha;
 	op->chip_reset = vha->hw->chip_reset;
+	op->rsp = rsp;
 	INIT_WORK(&op->work, qlt_handle_abts_recv_work);
 	queue_work(qla_tgt_wq, &op->work);
 	return;

drivers/scsi/qla2xxx/qla_target.h

@@ -73,7 +73,7 @@
 #define QLA_TGT_NULL_HANDLE	0
 
 #define QLA_TGT_HANDLE_MASK  0xF0000000
-#define QLA_QPID_HANDLE_MASK 0x000F0000 /* qpair id mask */
+#define QLA_QPID_HANDLE_MASK 0x00FF0000 /* qpair id mask */
 #define QLA_CMD_HANDLE_MASK  0x0000FFFF
 #define QLA_TGT_SKIP_HANDLE	(0xFFFFFFFF & ~QLA_TGT_HANDLE_MASK)
 
@@ -837,6 +837,7 @@ struct qla_tgt_sess_op {
 	struct work_struct work;
 	struct list_head cmd_list;
 	bool aborted;
+	struct rsp_que *rsp;
 };
 
 enum trace_flags {
@@ -871,6 +872,7 @@ struct qla_tgt_cmd {
 	uint8_t pad[7];
 	struct se_cmd se_cmd;
 	struct fc_port *sess;
+	struct qla_qpair *qpair;
 	int state;
 	struct work_struct work;
 	/* Sense buffer that will be mapped into outgoing status */
@@ -948,6 +950,7 @@ struct qla_tgt_mgmt_cmd {
 	uint16_t tmr_func;
 	uint8_t fc_tm_rsp;
 	struct fc_port *sess;
+	struct qla_qpair *qpair;
 	struct se_cmd se_cmd;
 	struct work_struct free_work;
 	unsigned int flags;
@@ -1049,7 +1052,8 @@ static inline void sid_to_portid(const uint8_t *s_id, port_id_t *p)
 /*
  * Exported symbols from qla_target.c LLD logic used by qla2xxx code..
  */
-extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, response_t *);
+extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, struct rsp_que *,
+	response_t *);
 extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *);
 extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t);
 extern int qlt_abort_cmd(struct qla_tgt_cmd *);
@@ -1082,7 +1086,7 @@ extern int qlt_stop_phase1(struct qla_tgt *);
 extern void qlt_stop_phase2(struct qla_tgt *);
 extern irqreturn_t qla83xx_msix_atio_q(int, void *);
 extern void qlt_83xx_iospace_config(struct qla_hw_data *);
-extern int qlt_free_qfull_cmds(struct scsi_qla_host *);
+extern int qlt_free_qfull_cmds(struct qla_qpair *);
 extern void qlt_logo_completion_handler(fc_port_t *, int);
 extern void qlt_do_generation_tick(struct scsi_qla_host *, int *);