Merge tag 'for-5.8/drivers-2020-06-01' of git://git.kernel.dk/linux-block

Pull block driver updates from Jens Axboe: "On top of the core changes, here are the block driver changes for this merge window: - NVMe changes: - NVMe over Fibre Channel protocol updates, which also reach over to drivers/scsi/lpfc (James Smart) - namespace revalidation support on the target (Anthony Iliopoulos) - gcc zero length array fix (Arnd Bergmann) - nvmet cleanups (Chaitanya Kulkarni) - misc cleanups and fixes (me, Keith Busch, Sagi Grimberg) - use a SRQ per completion vector (Max Gurtovoy) - fix handling of runtime changes to the queue count (Weiping Zhang) - t10 protection information support for nvme-rdma and nvmet-rdma (Israel Rukshin and Max Gurtovoy) - target side AEN improvements (Chaitanya Kulkarni) - various fixes and minor improvements all over, icluding the nvme part of the lpfc driver" - Floppy code cleanup series (Willy, Denis) - Floppy contention fix (Jiri) - Loop CONFIGURE support (Martijn) - bcache fixes/improvements (Coly, Joe, Colin) - q->queuedata cleanups (Christoph) - Get rid of ioctl_by_bdev (Christoph, Stefan) - md/raid5 allocation fixes (Coly) - zero length array fixes (Gustavo) - swim3 task state fix (Xu)" * tag 'for-5.8/drivers-2020-06-01' of git://git.kernel.dk/linux-block: (166 commits) bcache: configure the asynchronous registertion to be experimental bcache: asynchronous devices registration bcache: fix refcount underflow in bcache_device_free() bcache: Convert pr_<level> uses to a more typical style bcache: remove redundant variables i and n lpfc: Fix return value in __lpfc_nvme_ls_abort lpfc: fix axchg pointer reference after free and double frees lpfc: Fix pointer checks and comments in LS receive refactoring nvme: set dma alignment to qword nvmet: cleanups the loop in nvmet_async_events_process nvmet: fix memory leak when removing namespaces and controllers concurrently nvmet-rdma: add metadata/T10-PI support nvmet: add metadata support for block devices nvmet: add metadata/T10-PI support nvme: add Metadata Capabilities enumerations nvmet: rename nvmet_check_data_len to nvmet_check_transfer_len nvmet: rename nvmet_rw_len to nvmet_rw_data_len nvmet: add metadata characteristics for a namespace nvme-rdma: add metadata/T10-PI support nvme-rdma: introduce nvme_rdma_sgl structure ...
author: Linus Torvalds <torvalds@linux-foundation.org> 2020-06-02 15:37:03 -0700
committer: Linus Torvalds <torvalds@linux-foundation.org> 2020-06-02 15:37:03 -0700
commit: bce159d734091fe31340976081577333f52a85e4 (patch)
tree: 8396be51e6703797a60aefb4992e729f327d27c2 /drivers/scsi
parent: Merge tag 'for-5.8/block-2020-06-01' of git://git.kernel.dk/linux-block (diff)
parent: bcache: configure the asynchronous registertion to be experimental (diff)
download: wireguard-linux-bce159d734091fe31340976081577333f52a85e4.tar.xz
wireguard-linux-bce159d734091fe31340976081577333f52a85e4.zip
14 files changed, 1153 insertions, 689 deletions
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index 8e2a356911a9..62e96d4fdcc6 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -143,7 +143,7 @@ struct lpfc_dmabuf {
 
 struct lpfc_nvmet_ctxbuf {
 	struct list_head list;
-	struct lpfc_nvmet_rcv_ctx *context;
+	struct lpfc_async_xchg_ctx *context;
 	struct lpfc_iocbq *iocbq;
 	struct lpfc_sglq *sglq;
 	struct work_struct defer_work;
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 1354c141d614..f089867674cb 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -37,8 +37,6 @@
 #include <scsi/scsi_transport_fc.h>
 #include <scsi/fc/fc_fs.h>
 
-#include <linux/nvme-fc-driver.h>
-
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_sli.h"
@@ -48,7 +46,6 @@
 #include "lpfc.h"
 #include "lpfc_scsi.h"
 #include "lpfc_nvme.h"
-#include "lpfc_nvmet.h"
 #include "lpfc_logmsg.h"
 #include "lpfc_version.h"
 #include "lpfc_compat.h"
diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h
index 76dc8d9493d2..9ee6b930a655 100644
--- a/drivers/scsi/lpfc/lpfc_crtn.h
+++ b/drivers/scsi/lpfc/lpfc_crtn.h
@@ -24,7 +24,6 @@ typedef int (*node_filter)(struct lpfc_nodelist *, void *);
 
 struct fc_rport;
 struct fc_frame_header;
-struct lpfc_nvmet_rcv_ctx;
 void lpfc_down_link(struct lpfc_hba *, LPFC_MBOXQ_t *);
 void lpfc_sli_read_link_ste(struct lpfc_hba *);
 void lpfc_dump_mem(struct lpfc_hba *, LPFC_MBOXQ_t *, uint16_t, uint16_t);
@@ -564,12 +563,16 @@ void lpfc_nvme_update_localport(struct lpfc_vport *vport);
 int lpfc_nvmet_create_targetport(struct lpfc_hba *phba);
 int lpfc_nvmet_update_targetport(struct lpfc_hba *phba);
 void lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba);
-void lpfc_nvmet_unsol_ls_event(struct lpfc_hba *phba,
-			struct lpfc_sli_ring *pring, struct lpfc_iocbq *piocb);
+int lpfc_nvme_handle_lsreq(struct lpfc_hba *phba,
+			struct lpfc_async_xchg_ctx *axchg);
+int lpfc_nvmet_handle_lsreq(struct lpfc_hba *phba,
+			struct lpfc_async_xchg_ctx *axchg);
 void lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba, uint32_t idx,
 				struct rqb_dmabuf *nvmebuf, uint64_t isr_ts,
 				uint8_t cqflag);
 void lpfc_nvme_mod_param_dep(struct lpfc_hba *phba);
+void lpfc_nvmet_invalidate_host(struct lpfc_hba *phba,
+			struct lpfc_nodelist *ndlp);
 void lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba,
 				struct lpfc_iocbq *cmdiocb,
 				struct lpfc_wcqe_complete *abts_cmpl);
diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index 2aa578d20f8c..196f6ae9952e 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -44,7 +44,6 @@
 #include "lpfc_disc.h"
 #include "lpfc.h"
 #include "lpfc_scsi.h"
-#include "lpfc_nvme.h"
 #include "lpfc_logmsg.h"
 #include "lpfc_crtn.h"
 #include "lpfc_version.h"
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index 5a754fb5f854..4daae90e0c99 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -39,8 +39,6 @@
 #include <scsi/scsi_transport_fc.h>
 #include <scsi/fc/fc_fs.h>
 
-#include <linux/nvme-fc-driver.h>
-
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_sli.h"
@@ -50,7 +48,6 @@
 #include "lpfc.h"
 #include "lpfc_scsi.h"
 #include "lpfc_nvme.h"
-#include "lpfc_nvmet.h"
 #include "lpfc_logmsg.h"
 #include "lpfc_crtn.h"
 #include "lpfc_vport.h"
@@ -1035,7 +1032,7 @@ lpfc_debugfs_nvmestat_data(struct lpfc_vport *vport, char *buf, int size)
 {
 	struct lpfc_hba   *phba = vport->phba;
 	struct lpfc_nvmet_tgtport *tgtp;
-	struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp;
+	struct lpfc_async_xchg_ctx *ctxp, *next_ctxp;
 	struct nvme_fc_local_port *localport;
 	struct lpfc_fc4_ctrl_stat *cstat;
 	struct lpfc_nvme_lport *lport;
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 789eecbf32eb..f5952f8cd4b5 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -36,8 +36,6 @@
 #include <scsi/scsi_transport_fc.h>
 #include <scsi/fc/fc_fs.h>
 
-#include <linux/nvme-fc-driver.h>
-
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_nl.h"
@@ -825,6 +823,12 @@ lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 		if ((phba->sli_rev < LPFC_SLI_REV4) &&
 		    (!remove && ndlp->nlp_type & NLP_FABRIC))
 			continue;
+
+		/* Notify transport of connectivity loss to trigger cleanup. */
+		if (phba->nvmet_support &&
+		    ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
+			lpfc_nvmet_invalidate_host(phba, ndlp);
+
 		lpfc_disc_state_machine(vport, ndlp, NULL,
 					remove
 					? NLP_EVT_DEVICE_RM
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 4104bdcdbb6f..ea99483345f2 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -50,8 +50,6 @@
 #include <scsi/scsi_tcq.h>
 #include <scsi/fc/fc_fs.h>
 
-#include <linux/nvme-fc-driver.h>
-
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_sli.h"
@@ -61,7 +59,6 @@
 #include "lpfc.h"
 #include "lpfc_scsi.h"
 #include "lpfc_nvme.h"
-#include "lpfc_nvmet.h"
 #include "lpfc_logmsg.h"
 #include "lpfc_crtn.h"
 #include "lpfc_vport.h"
@@ -1032,7 +1029,7 @@ static int
 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
 {
 	struct lpfc_io_buf *psb, *psb_next;
-	struct lpfc_nvmet_rcv_ctx *ctxp, *ctxp_next;
+	struct lpfc_async_xchg_ctx *ctxp, *ctxp_next;
 	struct lpfc_sli4_hdw_queue *qp;
 	LIST_HEAD(aborts);
 	LIST_HEAD(nvme_aborts);
@@ -1099,7 +1096,7 @@ lpfc_hba_down_post_s4(struct lpfc_hba *phba)
 				 &nvmet_aborts);
 		spin_unlock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
 		list_for_each_entry_safe(ctxp, ctxp_next, &nvmet_aborts, list) {
-			ctxp->flag &= ~(LPFC_NVMET_XBUSY | LPFC_NVMET_ABORT_OP);
+			ctxp->flag &= ~(LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP);
 			lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
 		}
 	}
diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c
index 7082279e4c01..726f6619230f 100644
--- a/drivers/scsi/lpfc/lpfc_mem.c
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -31,8 +31,6 @@
 #include <scsi/scsi_transport_fc.h>
 #include <scsi/fc/fc_fs.h>
 
-#include <linux/nvme-fc-driver.h>
-
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_sli.h"
@@ -41,8 +39,6 @@
 #include "lpfc_disc.h"
 #include "lpfc.h"
 #include "lpfc_scsi.h"
-#include "lpfc_nvme.h"
-#include "lpfc_nvmet.h"
 #include "lpfc_crtn.h"
 #include "lpfc_logmsg.h"
 
diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
index a024e5a3918f..d8501bd959e7 100644
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -32,8 +32,6 @@
 #include <scsi/scsi_transport_fc.h>
 #include <scsi/fc/fc_fs.h>
 
-#include <linux/nvme-fc-driver.h>
-
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_sli.h"
@@ -491,6 +489,11 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 					 (unsigned long long)
 					 wwn_to_u64(sp->portName.u.wwn));
 
+		/* Notify transport of connectivity loss to trigger cleanup. */
+		if (phba->nvmet_support &&
+		    ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
+			lpfc_nvmet_invalidate_host(phba, ndlp);
+
 		ndlp->nlp_prev_state = ndlp->nlp_state;
 		/* rport needs to be unregistered first */
 		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
@@ -841,6 +844,12 @@ lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 		lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 	else
 		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+
+	/* Notify transport of connectivity loss to trigger cleanup. */
+	if (phba->nvmet_support &&
+	    ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
+		lpfc_nvmet_invalidate_host(phba, ndlp);
+
 	if (ndlp->nlp_DID == Fabric_DID) {
 		if (vport->port_state <= LPFC_FDISC)
 			goto out;
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index a45936e08031..b46ba70f78da 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -36,9 +36,6 @@
 #include <scsi/scsi_transport_fc.h>
 #include <scsi/fc/fc_fs.h>
 
-#include <linux/nvme.h>
-#include <linux/nvme-fc-driver.h>
-#include <linux/nvme-fc.h>
 #include "lpfc_version.h"
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
@@ -396,43 +393,100 @@ lpfc_nvme_remoteport_delete(struct nvme_fc_remote_port *remoteport)
 	return;
 }
 
-static void
-lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
-		       struct lpfc_wcqe_complete *wcqe)
+/**
+ * lpfc_nvme_handle_lsreq - Process an unsolicited NVME LS request
+ * @phba: pointer to lpfc hba data structure.
+ * @axchg: pointer to exchange context for the NVME LS request
+ *
+ * This routine is used for processing an asychronously received NVME LS
+ * request. Any remaining validation is done and the LS is then forwarded
+ * to the nvme-fc transport via nvme_fc_rcv_ls_req().
+ *
+ * The calling sequence should be: nvme_fc_rcv_ls_req() -> (processing)
+ * -> lpfc_nvme_xmt_ls_rsp/cmp -> req->done.
+ * __lpfc_nvme_xmt_ls_rsp_cmp should free the allocated axchg.
+ *
+ * Returns 0 if LS was handled and delivered to the transport
+ * Returns 1 if LS failed to be handled and should be dropped
+ */
+int
+lpfc_nvme_handle_lsreq(struct lpfc_hba *phba,
+			struct lpfc_async_xchg_ctx *axchg)
 {
-	struct lpfc_vport *vport = cmdwqe->vport;
+#if (IS_ENABLED(CONFIG_NVME_FC))
+	struct lpfc_vport *vport;
+	struct lpfc_nvme_rport *lpfc_rport;
+	struct nvme_fc_remote_port *remoteport;
 	struct lpfc_nvme_lport *lport;
-	uint32_t status;
+	uint32_t *payload = axchg->payload;
+	int rc;
+
+	vport = axchg->ndlp->vport;
+	lpfc_rport = axchg->ndlp->nrport;
+	if (!lpfc_rport)
+		return -EINVAL;
+
+	remoteport = lpfc_rport->remoteport;
+	if (!vport->localport)
+		return -EINVAL;
+
+	lport = vport->localport->private;
+	if (!lport)
+		return -EINVAL;
+
+	rc = nvme_fc_rcv_ls_req(remoteport, &axchg->ls_rsp, axchg->payload,
+				axchg->size);
+
+	lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
+			"6205 NVME Unsol rcv: sz %d rc %d: %08x %08x %08x "
+			"%08x %08x %08x\n",
+			axchg->size, rc,
+			*payload, *(payload+1), *(payload+2),
+			*(payload+3), *(payload+4), *(payload+5));
+
+	if (!rc)
+		return 0;
+#endif
+	return 1;
+}
+
+/**
+ * __lpfc_nvme_ls_req_cmp - Generic completion handler for a NVME
+ *        LS request.
+ * @phba: Pointer to HBA context object
+ * @vport: The local port that issued the LS
+ * @cmdwqe: Pointer to driver command WQE object.
+ * @wcqe: Pointer to driver response CQE object.
+ *
+ * This function is the generic completion handler for NVME LS requests.
+ * The function updates any states and statistics, calls the transport
+ * ls_req done() routine, then tears down the command and buffers used
+ * for the LS request.
+ **/
+void
+__lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba,  struct lpfc_vport *vport,
+			struct lpfc_iocbq *cmdwqe,
+			struct lpfc_wcqe_complete *wcqe)
+{
 	struct nvmefc_ls_req *pnvme_lsreq;
 	struct lpfc_dmabuf *buf_ptr;
 	struct lpfc_nodelist *ndlp;
+	uint32_t status;
 
 	pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2;
+	ndlp = (struct lpfc_nodelist *)cmdwqe->context1;
 	status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
 
-	if (vport->localport) {
-		lport = (struct lpfc_nvme_lport *)vport->localport->private;
-		if (lport) {
-			atomic_inc(&lport->fc4NvmeLsCmpls);
-			if (status) {
-				if (bf_get(lpfc_wcqe_c_xb, wcqe))
-					atomic_inc(&lport->cmpl_ls_xb);
-				atomic_inc(&lport->cmpl_ls_err);
-			}
-		}
-	}
-
-	ndlp = (struct lpfc_nodelist *)cmdwqe->context1;
 	lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
-			 "6047 nvme cmpl Enter "
-			 "Data %px DID %x Xri: %x status %x reason x%x "
-			 "cmd:x%px lsreg:x%px bmp:x%px ndlp:x%px\n",
+			 "6047 NVMEx LS REQ %px cmpl DID %x Xri: %x "
+			 "status %x reason x%x cmd:x%px lsreg:x%px bmp:x%px "
+			 "ndlp:x%px\n",
 			 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0,
 			 cmdwqe->sli4_xritag, status,
 			 (wcqe->parameter & 0xffff),
 			 cmdwqe, pnvme_lsreq, cmdwqe->context3, ndlp);
 
-	lpfc_nvmeio_data(phba, "NVME LS  CMPL: xri x%x stat x%x parm x%x\n",
+	lpfc_nvmeio_data(phba, "NVMEx LS CMPL: xri x%x stat x%x parm x%x\n",
 			 cmdwqe->sli4_xritag, status, wcqe->parameter);
 
 	if (cmdwqe->context3) {
@@ -445,7 +499,7 @@ lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 		pnvme_lsreq->done(pnvme_lsreq, status);
 	else
 		lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
-				 "6046 nvme cmpl without done call back? "
+				 "6046 NVMEx cmpl without done call back? "
 				 "Data %px DID %x Xri: %x status %x\n",
 				pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0,
 				cmdwqe->sli4_xritag, status);
@@ -456,6 +510,31 @@ lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 	lpfc_sli_release_iocbq(phba, cmdwqe);
 }
 
+static void
+lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
+		       struct lpfc_wcqe_complete *wcqe)
+{
+	struct lpfc_vport *vport = cmdwqe->vport;
+	struct lpfc_nvme_lport *lport;
+	uint32_t status;
+
+	status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
+
+	if (vport->localport) {
+		lport = (struct lpfc_nvme_lport *)vport->localport->private;
+		if (lport) {
+			atomic_inc(&lport->fc4NvmeLsCmpls);
+			if (status) {
+				if (bf_get(lpfc_wcqe_c_xb, wcqe))
+					atomic_inc(&lport->cmpl_ls_xb);
+				atomic_inc(&lport->cmpl_ls_err);
+			}
+		}
+	}
+
+	__lpfc_nvme_ls_req_cmp(phba, vport, cmdwqe, wcqe);
+}
+
 static int
 lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
 		  struct lpfc_dmabuf *inp,
@@ -557,13 +636,6 @@ lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
 
 
 	/* Issue GEN REQ WQE for NPORT <did> */
-	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
-			 "6050 Issue GEN REQ WQE to NPORT x%x "
-			 "Data: x%x x%x wq:x%px lsreq:x%px bmp:x%px "
-			 "xmit:%d 1st:%d\n",
-			 ndlp->nlp_DID, genwqe->iotag,
-			 vport->port_state,
-			genwqe, pnvme_lsreq, bmp, xmit_len, first_len);
 	genwqe->wqe_cmpl = cmpl;
 	genwqe->iocb_cmpl = NULL;
 	genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT;
@@ -575,105 +647,108 @@ lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
 
 	rc = lpfc_sli4_issue_wqe(phba, &phba->sli4_hba.hdwq[0], genwqe);
 	if (rc) {
-		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+		lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC | LOG_ELS,
 				 "6045 Issue GEN REQ WQE to NPORT x%x "
-				 "Data: x%x x%x\n",
+				 "Data: x%x x%x  rc x%x\n",
 				 ndlp->nlp_DID, genwqe->iotag,
-				 vport->port_state);
+				 vport->port_state, rc);
 		lpfc_sli_release_iocbq(phba, genwqe);
 		return 1;
 	}
+
+	lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_ELS,
+			 "6050 Issue GEN REQ WQE to NPORT x%x "
+			 "Data: oxid: x%x state: x%x wq:x%px lsreq:x%px "
+			 "bmp:x%px xmit:%d 1st:%d\n",
+			 ndlp->nlp_DID, genwqe->sli4_xritag,
+			 vport->port_state,
+			 genwqe, pnvme_lsreq, bmp, xmit_len, first_len);
 	return 0;
 }
 
+
 /**
- * lpfc_nvme_ls_req - Issue an Link Service request
- * @lpfc_pnvme: Pointer to the driver's nvme instance data
- * @lpfc_nvme_lport: Pointer to the driver's local port data
- * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
+ * __lpfc_nvme_ls_req - Generic service routine to issue an NVME LS request
+ * @vport: The local port issuing the LS
+ * @ndlp: The remote port to send the LS to
+ * @pnvme_lsreq: Pointer to LS request structure from the transport
  *
- * Driver registers this routine to handle any link service request
- * from the nvme_fc transport to a remote nvme-aware port.
+ * Routine validates the ndlp, builds buffers and sends a GEN_REQUEST
+ * WQE to perform the LS operation.
  *
  * Return value :
  *   0 - Success
- *   TODO: What are the failure codes.
+ *   non-zero: various error codes, in form of -Exxx
  **/
-static int
-lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport,
-		 struct nvme_fc_remote_port *pnvme_rport,
-		 struct nvmefc_ls_req *pnvme_lsreq)
+int
+__lpfc_nvme_ls_req(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+		      struct nvmefc_ls_req *pnvme_lsreq,
+		      void (*gen_req_cmp)(struct lpfc_hba *phba,
+				struct lpfc_iocbq *cmdwqe,
+				struct lpfc_wcqe_complete *wcqe))
 {
-	int ret = 0;
-	struct lpfc_nvme_lport *lport;
-	struct lpfc_nvme_rport *rport;
-	struct lpfc_vport *vport;
-	struct lpfc_nodelist *ndlp;
-	struct ulp_bde64 *bpl;
 	struct lpfc_dmabuf *bmp;
+	struct ulp_bde64 *bpl;
+	int ret;
 	uint16_t ntype, nstate;
 
-	/* there are two dma buf in the request, actually there is one and
-	 * the second one is just the start address + cmd size.
-	 * Before calling lpfc_nvme_gen_req these buffers need to be wrapped
-	 * in a lpfc_dmabuf struct. When freeing we just free the wrapper
-	 * because the nvem layer owns the data bufs.
-	 * We do not have to break these packets open, we don't care what is in
-	 * them. And we do not have to look at the resonse data, we only care
-	 * that we got a response. All of the caring is going to happen in the
-	 * nvme-fc layer.
-	 */
-
-	lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
-	rport = (struct lpfc_nvme_rport *)pnvme_rport->private;
-	if (unlikely(!lport) || unlikely(!rport))
-		return -EINVAL;
-
-	vport = lport->vport;
-
-	if (vport->load_flag & FC_UNLOADING)
-		return -ENODEV;
-
-	/* Need the ndlp.  It is stored in the driver's rport. */
-	ndlp = rport->ndlp;
 	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
-		lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
-				 "6051 Remoteport x%px, rport has invalid ndlp. "
-				 "Failing LS Req\n", pnvme_rport);
+		lpfc_printf_vlog(vport, KERN_ERR,
+				 LOG_NVME_DISC | LOG_NODE | LOG_NVME_IOERR,
+				 "6051 NVMEx LS REQ: Bad NDLP x%px, Failing "
+				 "LS Req\n",
+				 ndlp);
 		return -ENODEV;
 	}
 
-	/* The remote node has to be a mapped nvme target or an
-	 * unmapped nvme initiator or it's an error.
-	 */
 	ntype = ndlp->nlp_type;
 	nstate = ndlp->nlp_state;
 	if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) ||
 	    (ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) {
-		lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
-				 "6088 DID x%06x not ready for "
-				 "IO. State x%x, Type x%x\n",
-				 pnvme_rport->port_id,
-				 ndlp->nlp_state, ndlp->nlp_type);
+		lpfc_printf_vlog(vport, KERN_ERR,
+				 LOG_NVME_DISC | LOG_NODE | LOG_NVME_IOERR,
+				 "6088 NVMEx LS REQ: Fail DID x%06x not "
+				 "ready for IO. Type x%x, State x%x\n",
+				 ndlp->nlp_DID, ntype, nstate);
 		return -ENODEV;
 	}
-	bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+
+	/*
+	 * there are two dma buf in the request, actually there is one and
+	 * the second one is just the start address + cmd size.
+	 * Before calling lpfc_nvme_gen_req these buffers need to be wrapped
+	 * in a lpfc_dmabuf struct. When freeing we just free the wrapper
+	 * because the nvem layer owns the data bufs.
+	 * We do not have to break these packets open, we don't care what is
+	 * in them. And we do not have to look at the resonse data, we only
+	 * care that we got a response. All of the caring is going to happen
+	 * in the nvme-fc layer.
+	 */
+
+	bmp = kmalloc(sizeof(*bmp), GFP_KERNEL);
 	if (!bmp) {
 
-		lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
-				 "6044 Could not find node for DID %x\n",
-				 pnvme_rport->port_id);
-		return 2;
+		lpfc_printf_vlog(vport, KERN_ERR,
+				 LOG_NVME_DISC | LOG_NVME_IOERR,
+				 "6044 NVMEx LS REQ: Could not alloc LS buf "
+				 "for DID %x\n",
+				 ndlp->nlp_DID);
+		return -ENOMEM;
 	}
-	INIT_LIST_HEAD(&bmp->list);
+
 	bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys));
 	if (!bmp->virt) {
-		lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
-				 "6042 Could not find node for DID %x\n",
-				 pnvme_rport->port_id);
+		lpfc_printf_vlog(vport, KERN_ERR,
+				 LOG_NVME_DISC | LOG_NVME_IOERR,
+				 "6042 NVMEx LS REQ: Could not alloc mbuf "
+				 "for DID %x\n",
+				 ndlp->nlp_DID);
 		kfree(bmp);
-		return 3;
+		return -ENOMEM;
 	}
+
+	INIT_LIST_HEAD(&bmp->list);
+
 	bpl = (struct ulp_bde64 *)bmp->virt;
 	bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma));
 	bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma));
@@ -688,118 +763,206 @@ lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport,
 	bpl->tus.f.bdeSize = pnvme_lsreq->rsplen;
 	bpl->tus.w = le32_to_cpu(bpl->tus.w);
 
-	/* Expand print to include key fields. */
 	lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
-			 "6149 Issue LS Req to DID 0x%06x lport x%px, "
-			 "rport x%px lsreq x%px rqstlen:%d rsplen:%d "
-			 "%pad %pad\n",
-			 ndlp->nlp_DID, pnvme_lport, pnvme_rport,
-			 pnvme_lsreq, pnvme_lsreq->rqstlen,
-			 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
-			 &pnvme_lsreq->rspdma);
-
-	atomic_inc(&lport->fc4NvmeLsRequests);
+			"6149 NVMEx LS REQ: Issue to DID 0x%06x lsreq x%px, "
+			"rqstlen:%d rsplen:%d %pad %pad\n",
+			ndlp->nlp_DID, pnvme_lsreq, pnvme_lsreq->rqstlen,
+			pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
+			&pnvme_lsreq->rspdma);
 
-	/* Hardcode the wait to 30 seconds.  Connections are failing otherwise.
-	 * This code allows it all to work.
-	 */
 	ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr,
-				pnvme_lsreq, lpfc_nvme_cmpl_gen_req,
-				ndlp, 2, 30, 0);
+				pnvme_lsreq, gen_req_cmp, ndlp, 2,
+				LPFC_NVME_LS_TIMEOUT, 0);
 	if (ret != WQE_SUCCESS) {
-		atomic_inc(&lport->xmt_ls_err);
-		lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
-				 "6052 EXIT. issue ls wqe failed lport x%px, "
-				 "rport x%px lsreq x%px Status %x DID %x\n",
-				 pnvme_lport, pnvme_rport, pnvme_lsreq,
-				 ret, ndlp->nlp_DID);
+		lpfc_printf_vlog(vport, KERN_ERR,
+				 LOG_NVME_DISC | LOG_NVME_IOERR,
+				 "6052 NVMEx REQ: EXIT. issue ls wqe failed "
+				 "lsreq x%px Status %x DID %x\n",
+				 pnvme_lsreq, ret, ndlp->nlp_DID);
 		lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys);
 		kfree(bmp);
-		return ret;
+		return -EIO;
 	}
 
-	/* Stub in routine and return 0 for now. */
-	return ret;
+	return 0;
 }
 
 /**
- * lpfc_nvme_ls_abort - Issue an Link Service request
- * @lpfc_pnvme: Pointer to the driver's nvme instance data
- * @lpfc_nvme_lport: Pointer to the driver's local port data
- * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
+ * lpfc_nvme_ls_req - Issue an NVME Link Service request
+ * @lpfc_nvme_lport: Transport localport that LS is to be issued from.
+ * @lpfc_nvme_rport: Transport remoteport that LS is to be sent to.
+ * @pnvme_lsreq - the transport nvme_ls_req structure for the LS
  *
  * Driver registers this routine to handle any link service request
  * from the nvme_fc transport to a remote nvme-aware port.
  *
  * Return value :
  *   0 - Success
- *   TODO: What are the failure codes.
+ *   non-zero: various error codes, in form of -Exxx
  **/
-static void
-lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport,
-		   struct nvme_fc_remote_port *pnvme_rport,
-		   struct nvmefc_ls_req *pnvme_lsreq)
+static int
+lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport,
+		 struct nvme_fc_remote_port *pnvme_rport,
+		 struct nvmefc_ls_req *pnvme_lsreq)
 {
 	struct lpfc_nvme_lport *lport;
+	struct lpfc_nvme_rport *rport;
 	struct lpfc_vport *vport;
-	struct lpfc_hba *phba;
-	struct lpfc_nodelist *ndlp;
-	LIST_HEAD(abort_list);
-	struct lpfc_sli_ring *pring;
-	struct lpfc_iocbq *wqe, *next_wqe;
+	int ret;
 
 	lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
-	if (unlikely(!lport))
-		return;
-	vport = lport->vport;
-	phba = vport->phba;
+	rport = (struct lpfc_nvme_rport *)pnvme_rport->private;
+	if (unlikely(!lport) || unlikely(!rport))
+		return -EINVAL;
 
+	vport = lport->vport;
 	if (vport->load_flag & FC_UNLOADING)
-		return;
+		return -ENODEV;
+
+	atomic_inc(&lport->fc4NvmeLsRequests);
+
+	ret = __lpfc_nvme_ls_req(vport, rport->ndlp, pnvme_lsreq,
+				 lpfc_nvme_ls_req_cmp);
+	if (ret)
+		atomic_inc(&lport->xmt_ls_err);
+
+	return ret;
+}
+
+/**
+ * __lpfc_nvme_ls_abort - Generic service routine to abort a prior
+ *         NVME LS request
+ * @vport: The local port that issued the LS
+ * @ndlp: The remote port the LS was sent to
+ * @pnvme_lsreq: Pointer to LS request structure from the transport
+ *
+ * The driver validates the ndlp, looks for the LS, and aborts the
+ * LS if found.
+ *
+ * Returns:
+ * 0 : if LS found and aborted
+ * non-zero: various error conditions in form -Exxx
+ **/
+int
+__lpfc_nvme_ls_abort(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			struct nvmefc_ls_req *pnvme_lsreq)
+{
+	struct lpfc_hba *phba = vport->phba;
+	struct lpfc_sli_ring *pring;
+	struct lpfc_iocbq *wqe, *next_wqe;
+	bool foundit = false;
 
-	ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id);
 	if (!ndlp) {
-		lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
-				 "6049 Could not find node for DID %x\n",
-				 pnvme_rport->port_id);
-		return;
+		lpfc_printf_log(phba, KERN_ERR,
+				LOG_NVME_DISC | LOG_NODE |
+					LOG_NVME_IOERR | LOG_NVME_ABTS,
+				"6049 NVMEx LS REQ Abort: Bad NDLP x%px DID "
+				"x%06x, Failing LS Req\n",
+				ndlp, ndlp ? ndlp->nlp_DID : 0);
+		return -EINVAL;
 	}
 
-	/* Expand print to include key fields. */
-	lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
-			 "6040 ENTER.  lport x%px, rport x%px lsreq x%px rqstlen:%d "
-			 "rsplen:%d %pad %pad\n",
-			 pnvme_lport, pnvme_rport,
+	lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_NVME_ABTS,
+			 "6040 NVMEx LS REQ Abort: Issue LS_ABORT for lsreq "
+			 "x%p rqstlen:%d rsplen:%d %pad %pad\n",
 			 pnvme_lsreq, pnvme_lsreq->rqstlen,
 			 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
 			 &pnvme_lsreq->rspdma);
 
 	/*
-	 * Lock the ELS ring txcmplq and build a local list of all ELS IOs
-	 * that need an ABTS.  The IOs need to stay on the txcmplq so that
-	 * the abort operation completes them successfully.
+	 * Lock the ELS ring txcmplq and look for the wqe that matches
+	 * this ELS. If found, issue an abort on the wqe.
 	 */
 	pring = phba->sli4_hba.nvmels_wq->pring;
 	spin_lock_irq(&phba->hbalock);
 	spin_lock(&pring->ring_lock);
 	list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) {
-		/* Add to abort_list on on NDLP match. */
-		if (lpfc_check_sli_ndlp(phba, pring, wqe, ndlp)) {
+		if (wqe->context2 == pnvme_lsreq) {
 			wqe->iocb_flag |= LPFC_DRIVER_ABORTED;
-			list_add_tail(&wqe->dlist, &abort_list);
+			foundit = true;
+			break;
 		}
 	}
 	spin_unlock(&pring->ring_lock);
-	spin_unlock_irq(&phba->hbalock);
 
-	/* Abort the targeted IOs and remove them from the abort list. */
-	list_for_each_entry_safe(wqe, next_wqe, &abort_list, dlist) {
-		atomic_inc(&lport->xmt_ls_abort);
-		spin_lock_irq(&phba->hbalock);
-		list_del_init(&wqe->dlist);
+	if (foundit)
 		lpfc_sli_issue_abort_iotag(phba, pring, wqe);
-		spin_unlock_irq(&phba->hbalock);
+	spin_unlock_irq(&phba->hbalock);
+
+	if (foundit)
+		return 0;
+
+	lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_NVME_ABTS,
+			 "6213 NVMEx LS REQ Abort: Unable to locate req x%p\n",
+			 pnvme_lsreq);
+	return -EINVAL;
+}
+
+static int
+lpfc_nvme_xmt_ls_rsp(struct nvme_fc_local_port *localport,
+		     struct nvme_fc_remote_port *remoteport,
+		     struct nvmefc_ls_rsp *ls_rsp)
+{
+	struct lpfc_async_xchg_ctx *axchg =
+		container_of(ls_rsp, struct lpfc_async_xchg_ctx, ls_rsp);
+	struct lpfc_nvme_lport *lport;
+	int rc;
+
+	if (axchg->phba->pport->load_flag & FC_UNLOADING)
+		return -ENODEV;
+
+	lport = (struct lpfc_nvme_lport *)localport->private;
+
+	rc = __lpfc_nvme_xmt_ls_rsp(axchg, ls_rsp, __lpfc_nvme_xmt_ls_rsp_cmp);
+
+	if (rc) {
+		/*
+		 * unless the failure is due to having already sent
+		 * the response, an abort will be generated for the
+		 * exchange if the rsp can't be sent.
+		 */
+		if (rc != -EALREADY)
+			atomic_inc(&lport->xmt_ls_abort);
+		return rc;
 	}
+
+	return 0;
+}
+
+/**
+ * lpfc_nvme_ls_abort - Abort a prior NVME LS request
+ * @lpfc_nvme_lport: Transport localport that LS is to be issued from.
+ * @lpfc_nvme_rport: Transport remoteport that LS is to be sent to.
+ * @pnvme_lsreq - the transport nvme_ls_req structure for the LS
+ *
+ * Driver registers this routine to abort a NVME LS request that is
+ * in progress (from the transports perspective).
+ **/
+static void
+lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport,
+		   struct nvme_fc_remote_port *pnvme_rport,
+		   struct nvmefc_ls_req *pnvme_lsreq)
+{
+	struct lpfc_nvme_lport *lport;
+	struct lpfc_vport *vport;
+	struct lpfc_hba *phba;
+	struct lpfc_nodelist *ndlp;
+	int ret;
+
+	lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
+	if (unlikely(!lport))
+		return;
+	vport = lport->vport;
+	phba = vport->phba;
+
+	if (vport->load_flag & FC_UNLOADING)
+		return;
+
+	ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id);
+
+	ret = __lpfc_nvme_ls_abort(vport, ndlp, pnvme_lsreq);
+	if (!ret)
+		atomic_inc(&lport->xmt_ls_abort);
 }
 
 /* Fix up the existing sgls for NVME IO. */
@@ -1911,6 +2074,7 @@ static struct nvme_fc_port_template lpfc_nvme_template = {
 	.fcp_io       = lpfc_nvme_fcp_io_submit,
 	.ls_abort     = lpfc_nvme_ls_abort,
 	.fcp_abort    = lpfc_nvme_fcp_abort,
+	.xmt_ls_rsp   = lpfc_nvme_xmt_ls_rsp,
 
 	.max_hw_queues = 1,
 	.max_sgl_segments = LPFC_NVME_DEFAULT_SEGS,
@@ -2106,6 +2270,7 @@ lpfc_nvme_create_localport(struct lpfc_vport *vport)
 		atomic_set(&lport->cmpl_fcp_err, 0);
 		atomic_set(&lport->cmpl_ls_xb, 0);
 		atomic_set(&lport->cmpl_ls_err, 0);
+
 		atomic_set(&lport->fc4NvmeLsRequests, 0);
 		atomic_set(&lport->fc4NvmeLsCmpls, 0);
 	}
diff --git a/drivers/scsi/lpfc/lpfc_nvme.h b/drivers/scsi/lpfc/lpfc_nvme.h
index 593c48ff634e..4a4c3f780e1f 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.h
+++ b/drivers/scsi/lpfc/lpfc_nvme.h
@@ -21,6 +21,10 @@
  * included with this package.                                     *
  ********************************************************************/
 
+#include <linux/nvme.h>
+#include <linux/nvme-fc-driver.h>
+#include <linux/nvme-fc.h>
+
 #define LPFC_NVME_DEFAULT_SEGS		(64 + 1)	/* 256K IOs */
 
 #define LPFC_NVME_ERSP_LEN		0x20
@@ -74,3 +78,179 @@ struct lpfc_nvme_rport {
 struct lpfc_nvme_fcpreq_priv {
 	struct lpfc_io_buf *nvme_buf;
 };
+
+/*
+ * set NVME LS request timeouts to 30s. It is larger than the 2*R_A_TOV
+ * set by the spec, which appears to have issues with some devices.
+ */
+#define LPFC_NVME_LS_TIMEOUT		30
+
+
+#define LPFC_NVMET_DEFAULT_SEGS		(64 + 1)	/* 256K IOs */
+#define LPFC_NVMET_RQE_MIN_POST		128
+#define LPFC_NVMET_RQE_DEF_POST		512
+#define LPFC_NVMET_RQE_DEF_COUNT	2048
+#define LPFC_NVMET_SUCCESS_LEN		12
+
+#define LPFC_NVMET_MRQ_AUTO		0
+#define LPFC_NVMET_MRQ_MAX		16
+
+#define LPFC_NVMET_WAIT_TMO		(5 * MSEC_PER_SEC)
+
+/* Used for NVME Target */
+#define LPFC_NVMET_INV_HOST_ACTIVE      1
+
+struct lpfc_nvmet_tgtport {
+	struct lpfc_hba *phba;
+	struct completion *tport_unreg_cmp;
+	atomic_t state;		/* tracks nvmet hosthandle invalidation */
+
+	/* Stats counters - lpfc_nvmet_unsol_ls_buffer */
+	atomic_t rcv_ls_req_in;
+	atomic_t rcv_ls_req_out;
+	atomic_t rcv_ls_req_drop;
+	atomic_t xmt_ls_abort;
+	atomic_t xmt_ls_abort_cmpl;
+
+	/* Stats counters - lpfc_nvmet_xmt_ls_rsp */
+	atomic_t xmt_ls_rsp;
+	atomic_t xmt_ls_drop;
+
+	/* Stats counters - lpfc_nvmet_xmt_ls_rsp_cmp */
+	atomic_t xmt_ls_rsp_error;
+	atomic_t xmt_ls_rsp_aborted;
+	atomic_t xmt_ls_rsp_xb_set;
+	atomic_t xmt_ls_rsp_cmpl;
+
+	/* Stats counters - lpfc_nvmet_unsol_fcp_buffer */
+	atomic_t rcv_fcp_cmd_in;
+	atomic_t rcv_fcp_cmd_out;
+	atomic_t rcv_fcp_cmd_drop;
+	atomic_t rcv_fcp_cmd_defer;
+	atomic_t xmt_fcp_release;
+
+	/* Stats counters - lpfc_nvmet_xmt_fcp_op */
+	atomic_t xmt_fcp_drop;
+	atomic_t xmt_fcp_read_rsp;
+	atomic_t xmt_fcp_read;
+	atomic_t xmt_fcp_write;
+	atomic_t xmt_fcp_rsp;
+
+	/* Stats counters - lpfc_nvmet_xmt_fcp_op_cmp */
+	atomic_t xmt_fcp_rsp_xb_set;
+	atomic_t xmt_fcp_rsp_cmpl;
+	atomic_t xmt_fcp_rsp_error;
+	atomic_t xmt_fcp_rsp_aborted;
+	atomic_t xmt_fcp_rsp_drop;
+
+	/* Stats counters - lpfc_nvmet_xmt_fcp_abort */
+	atomic_t xmt_fcp_xri_abort_cqe;
+	atomic_t xmt_fcp_abort;
+	atomic_t xmt_fcp_abort_cmpl;
+	atomic_t xmt_abort_sol;
+	atomic_t xmt_abort_unsol;
+	atomic_t xmt_abort_rsp;
+	atomic_t xmt_abort_rsp_error;
+
+	/* Stats counters - defer IO */
+	atomic_t defer_ctx;
+	atomic_t defer_fod;
+	atomic_t defer_wqfull;
+};
+
+struct lpfc_nvmet_ctx_info {
+	struct list_head nvmet_ctx_list;
+	spinlock_t	nvmet_ctx_list_lock; /* lock per CPU */
+	struct lpfc_nvmet_ctx_info *nvmet_ctx_next_cpu;
+	struct lpfc_nvmet_ctx_info *nvmet_ctx_start_cpu;
+	uint16_t	nvmet_ctx_list_cnt;
+	char pad[16];  /* pad to a cache-line */
+};
+
+/* This retrieves the context info associated with the specified cpu / mrq */
+#define lpfc_get_ctx_list(phba, cpu, mrq)  \
+	(phba->sli4_hba.nvmet_ctx_info + ((cpu * phba->cfg_nvmet_mrq) + mrq))
+
+/* Values for state field of struct lpfc_async_xchg_ctx */
+#define LPFC_NVME_STE_LS_RCV		1
+#define LPFC_NVME_STE_LS_ABORT		2
+#define LPFC_NVME_STE_LS_RSP		3
+#define LPFC_NVME_STE_RCV		4
+#define LPFC_NVME_STE_DATA		5
+#define LPFC_NVME_STE_ABORT		6
+#define LPFC_NVME_STE_DONE		7
+#define LPFC_NVME_STE_FREE		0xff
+
+/* Values for flag field of struct lpfc_async_xchg_ctx */
+#define LPFC_NVME_IO_INP		0x1  /* IO is in progress on exchange */
+#define LPFC_NVME_ABORT_OP		0x2  /* Abort WQE issued on exchange */
+#define LPFC_NVME_XBUSY			0x4  /* XB bit set on IO cmpl */
+#define LPFC_NVME_CTX_RLS		0x8  /* ctx free requested */
+#define LPFC_NVME_ABTS_RCV		0x10  /* ABTS received on exchange */
+#define LPFC_NVME_CTX_REUSE_WQ		0x20  /* ctx reused via WQ */
+#define LPFC_NVME_DEFER_WQFULL		0x40  /* Waiting on a free WQE */
+#define LPFC_NVME_TNOTIFY		0x80  /* notify transport of abts */
+
+struct lpfc_async_xchg_ctx {
+	union {
+		struct nvmefc_tgt_fcp_req fcp_req;
+	} hdlrctx;
+	struct list_head list;
+	struct lpfc_hba *phba;
+	struct lpfc_nodelist *ndlp;
+	struct nvmefc_ls_req *ls_req;
+	struct nvmefc_ls_rsp ls_rsp;
+	struct lpfc_iocbq *wqeq;
+	struct lpfc_iocbq *abort_wqeq;
+	spinlock_t ctxlock; /* protect flag access */
+	uint32_t sid;
+	uint32_t offset;
+	uint16_t oxid;
+	uint16_t size;
+	uint16_t entry_cnt;
+	uint16_t cpu;
+	uint16_t idx;
+	uint16_t state;
+	uint16_t flag;
+	void *payload;
+	struct rqb_dmabuf *rqb_buffer;
+	struct lpfc_nvmet_ctxbuf *ctxbuf;
+	struct lpfc_sli4_hdw_queue *hdwq;
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+	uint64_t ts_isr_cmd;
+	uint64_t ts_cmd_nvme;
+	uint64_t ts_nvme_data;
+	uint64_t ts_data_wqput;
+	uint64_t ts_isr_data;
+	uint64_t ts_data_nvme;
+	uint64_t ts_nvme_status;
+	uint64_t ts_status_wqput;
+	uint64_t ts_isr_status;
+	uint64_t ts_status_nvme;
+#endif
+};
+
+
+/* routines found in lpfc_nvme.c */
+int __lpfc_nvme_ls_req(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+		struct nvmefc_ls_req *pnvme_lsreq,
+		void (*gen_req_cmp)(struct lpfc_hba *phba,
+				struct lpfc_iocbq *cmdwqe,
+				struct lpfc_wcqe_complete *wcqe));
+void __lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba,  struct lpfc_vport *vport,
+		struct lpfc_iocbq *cmdwqe, struct lpfc_wcqe_complete *wcqe);
+int __lpfc_nvme_ls_abort(struct lpfc_vport *vport,
+		struct lpfc_nodelist *ndlp, struct nvmefc_ls_req *pnvme_lsreq);
+
+/* routines found in lpfc_nvmet.c */
+int lpfc_nvme_unsol_ls_issue_abort(struct lpfc_hba *phba,
+			struct lpfc_async_xchg_ctx *ctxp, uint32_t sid,
+			uint16_t xri);
+int __lpfc_nvme_xmt_ls_rsp(struct lpfc_async_xchg_ctx *axchg,
+			struct nvmefc_ls_rsp *ls_rsp,
+			void (*xmt_ls_rsp_cmp)(struct lpfc_hba *phba,
+				struct lpfc_iocbq *cmdwqe,
+				struct lpfc_wcqe_complete *wcqe));
+void __lpfc_nvme_xmt_ls_rsp_cmp(struct lpfc_hba *phba,
+		struct lpfc_iocbq *cmdwqe, struct lpfc_wcqe_complete *wcqe);
diff --git a/drivers/scsi/lpfc/lpfc_nvmet.c b/drivers/scsi/lpfc/lpfc_nvmet.c
index 565419bf8d74..32eb5e873e9b 100644
--- a/drivers/scsi/lpfc/lpfc_nvmet.c
+++ b/drivers/scsi/lpfc/lpfc_nvmet.c
@@ -36,10 +36,6 @@
 #include <scsi/scsi_transport_fc.h>
 #include <scsi/fc/fc_fs.h>
 
-#include <linux/nvme.h>
-#include <linux/nvme-fc-driver.h>
-#include <linux/nvme-fc.h>
-
 #include "lpfc_version.h"
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
@@ -50,29 +46,25 @@
 #include "lpfc.h"
 #include "lpfc_scsi.h"
 #include "lpfc_nvme.h"
-#include "lpfc_nvmet.h"
 #include "lpfc_logmsg.h"
 #include "lpfc_crtn.h"
 #include "lpfc_vport.h"
 #include "lpfc_debugfs.h"
 
 static struct lpfc_iocbq *lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *,
-						 struct lpfc_nvmet_rcv_ctx *,
+						 struct lpfc_async_xchg_ctx *,
 						 dma_addr_t rspbuf,
 						 uint16_t rspsize);
 static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *,
-						  struct lpfc_nvmet_rcv_ctx *);
+						  struct lpfc_async_xchg_ctx *);
 static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *,
-					  struct lpfc_nvmet_rcv_ctx *,
+					  struct lpfc_async_xchg_ctx *,
 					  uint32_t, uint16_t);
 static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *,
-					    struct lpfc_nvmet_rcv_ctx *,
+					    struct lpfc_async_xchg_ctx *,
 					    uint32_t, uint16_t);
-static int lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *,
-					   struct lpfc_nvmet_rcv_ctx *,
-					   uint32_t, uint16_t);
 static void lpfc_nvmet_wqfull_flush(struct lpfc_hba *, struct lpfc_queue *,
-				    struct lpfc_nvmet_rcv_ctx *);
+				    struct lpfc_async_xchg_ctx *);
 static void lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *);
 
 static void lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf);
@@ -221,10 +213,10 @@ lpfc_nvmet_cmd_template(void)
 }
 
 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
-static struct lpfc_nvmet_rcv_ctx *
+static struct lpfc_async_xchg_ctx *
 lpfc_nvmet_get_ctx_for_xri(struct lpfc_hba *phba, u16 xri)
 {
-	struct lpfc_nvmet_rcv_ctx *ctxp;
+	struct lpfc_async_xchg_ctx *ctxp;
 	unsigned long iflag;
 	bool found = false;
 
@@ -243,10 +235,10 @@ lpfc_nvmet_get_ctx_for_xri(struct lpfc_hba *phba, u16 xri)
 	return NULL;
 }
 
-static struct lpfc_nvmet_rcv_ctx *
+static struct lpfc_async_xchg_ctx *
 lpfc_nvmet_get_ctx_for_oxid(struct lpfc_hba *phba, u16 oxid, u32 sid)
 {
-	struct lpfc_nvmet_rcv_ctx *ctxp;
+	struct lpfc_async_xchg_ctx *ctxp;
 	unsigned long iflag;
 	bool found = false;
 
@@ -267,7 +259,8 @@ lpfc_nvmet_get_ctx_for_oxid(struct lpfc_hba *phba, u16 oxid, u32 sid)
 #endif
 
 static void
-lpfc_nvmet_defer_release(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp)
+lpfc_nvmet_defer_release(struct lpfc_hba *phba,
+			struct lpfc_async_xchg_ctx *ctxp)
 {
 	lockdep_assert_held(&ctxp->ctxlock);
 
@@ -275,10 +268,10 @@ lpfc_nvmet_defer_release(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp)
 			"6313 NVMET Defer ctx release oxid x%x flg x%x\n",
 			ctxp->oxid, ctxp->flag);
 
-	if (ctxp->flag & LPFC_NVMET_CTX_RLS)
+	if (ctxp->flag & LPFC_NVME_CTX_RLS)
 		return;
 
-	ctxp->flag |= LPFC_NVMET_CTX_RLS;
+	ctxp->flag |= LPFC_NVME_CTX_RLS;
 	spin_lock(&phba->sli4_hba.t_active_list_lock);
 	list_del(&ctxp->list);
 	spin_unlock(&phba->sli4_hba.t_active_list_lock);
@@ -288,6 +281,53 @@ lpfc_nvmet_defer_release(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp)
 }
 
 /**
+ * __lpfc_nvme_xmt_ls_rsp_cmp - Generic completion handler for the
+ *         transmission of an NVME LS response.
+ * @phba: Pointer to HBA context object.
+ * @cmdwqe: Pointer to driver command WQE object.
+ * @wcqe: Pointer to driver response CQE object.
+ *
+ * The function is called from SLI ring event handler with no
+ * lock held. The function frees memory resources used for the command
+ * used to send the NVME LS RSP.
+ **/
+void
+__lpfc_nvme_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
+			   struct lpfc_wcqe_complete *wcqe)
+{
+	struct lpfc_async_xchg_ctx *axchg = cmdwqe->context2;
+	struct nvmefc_ls_rsp *ls_rsp = &axchg->ls_rsp;
+	uint32_t status, result;
+
+	status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
+	result = wcqe->parameter;
+
+	if (axchg->state != LPFC_NVME_STE_LS_RSP || axchg->entry_cnt != 2) {
+		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC | LOG_NVME_IOERR,
+				"6410 NVMEx LS cmpl state mismatch IO x%x: "
+				"%d %d\n",
+				axchg->oxid, axchg->state, axchg->entry_cnt);
+	}
+
+	lpfc_nvmeio_data(phba, "NVMEx LS  CMPL: xri x%x stat x%x result x%x\n",
+			 axchg->oxid, status, result);
+
+	lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
+			"6038 NVMEx LS rsp cmpl: %d %d oxid x%x\n",
+			status, result, axchg->oxid);
+
+	lpfc_nlp_put(cmdwqe->context1);
+	cmdwqe->context2 = NULL;
+	cmdwqe->context3 = NULL;
+	lpfc_sli_release_iocbq(phba, cmdwqe);
+	ls_rsp->done(ls_rsp);
+	lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
+			"6200 NVMEx LS rsp cmpl done status %d oxid x%x\n",
+			status, axchg->oxid);
+	kfree(axchg);
+}
+
+/**
  * lpfc_nvmet_xmt_ls_rsp_cmp - Completion handler for LS Response
  * @phba: Pointer to HBA context object.
  * @cmdwqe: Pointer to driver command WQE object.
@@ -295,33 +335,23 @@ lpfc_nvmet_defer_release(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp)
  *
  * The function is called from SLI ring event handler with no
  * lock held. This function is the completion handler for NVME LS commands
- * The function frees memory resources used for the NVME commands.
+ * The function updates any states and statistics, then calls the
+ * generic completion handler to free resources.
  **/
 static void
 lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 			  struct lpfc_wcqe_complete *wcqe)
 {
 	struct lpfc_nvmet_tgtport *tgtp;
-	struct nvmefc_tgt_ls_req *rsp;
-	struct lpfc_nvmet_rcv_ctx *ctxp;
 	uint32_t status, result;
 
-	status = bf_get(lpfc_wcqe_c_status, wcqe);
-	result = wcqe->parameter;
-	ctxp = cmdwqe->context2;
-
-	if (ctxp->state != LPFC_NVMET_STE_LS_RSP || ctxp->entry_cnt != 2) {
-		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
-				"6410 NVMET LS cmpl state mismatch IO x%x: "
-				"%d %d\n",
-				ctxp->oxid, ctxp->state, ctxp->entry_cnt);
-	}
-
 	if (!phba->targetport)
-		goto out;
+		goto finish;
 
-	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+	status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
+	result = wcqe->parameter;
 
+	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
 	if (tgtp) {
 		if (status) {
 			atomic_inc(&tgtp->xmt_ls_rsp_error);
@@ -334,22 +364,8 @@ lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 		}
 	}
 
-out:
-	rsp = &ctxp->ctx.ls_req;
-
-	lpfc_nvmeio_data(phba, "NVMET LS  CMPL: xri x%x stat x%x result x%x\n",
-			 ctxp->oxid, status, result);
-
-	lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
-			"6038 NVMET LS rsp cmpl: %d %d oxid x%x\n",
-			status, result, ctxp->oxid);
-
-	lpfc_nlp_put(cmdwqe->context1);
-	cmdwqe->context2 = NULL;
-	cmdwqe->context3 = NULL;
-	lpfc_sli_release_iocbq(phba, cmdwqe);
-	rsp->done(rsp);
-	kfree(ctxp);
+finish:
+	__lpfc_nvme_xmt_ls_rsp_cmp(phba, cmdwqe, wcqe);
 }
 
 /**
@@ -369,7 +385,7 @@ void
 lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
 {
 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
-	struct lpfc_nvmet_rcv_ctx *ctxp = ctx_buf->context;
+	struct lpfc_async_xchg_ctx *ctxp = ctx_buf->context;
 	struct lpfc_nvmet_tgtport *tgtp;
 	struct fc_frame_header *fc_hdr;
 	struct rqb_dmabuf *nvmebuf;
@@ -378,7 +394,7 @@ lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
 	int cpu;
 	unsigned long iflag;
 
-	if (ctxp->state == LPFC_NVMET_STE_FREE) {
+	if (ctxp->state == LPFC_NVME_STE_FREE) {
 		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
 				"6411 NVMET free, already free IO x%x: %d %d\n",
 				ctxp->oxid, ctxp->state, ctxp->entry_cnt);
@@ -390,8 +406,8 @@ lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
 		/* check if freed in another path whilst acquiring lock */
 		if (nvmebuf) {
 			ctxp->rqb_buffer = NULL;
-			if (ctxp->flag & LPFC_NVMET_CTX_REUSE_WQ) {
-				ctxp->flag &= ~LPFC_NVMET_CTX_REUSE_WQ;
+			if (ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) {
+				ctxp->flag &= ~LPFC_NVME_CTX_REUSE_WQ;
 				spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
 				nvmebuf->hrq->rqbp->rqb_free_buffer(phba,
 								    nvmebuf);
@@ -404,7 +420,7 @@ lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
 			spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
 		}
 	}
-	ctxp->state = LPFC_NVMET_STE_FREE;
+	ctxp->state = LPFC_NVME_STE_FREE;
 
 	spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
 	if (phba->sli4_hba.nvmet_io_wait_cnt) {
@@ -421,14 +437,14 @@ lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
 		size = nvmebuf->bytes_recv;
 		sid = sli4_sid_from_fc_hdr(fc_hdr);
 
-		ctxp = (struct lpfc_nvmet_rcv_ctx *)ctx_buf->context;
+		ctxp = (struct lpfc_async_xchg_ctx *)ctx_buf->context;
 		ctxp->wqeq = NULL;
 		ctxp->offset = 0;
 		ctxp->phba = phba;
 		ctxp->size = size;
 		ctxp->oxid = oxid;
 		ctxp->sid = sid;
-		ctxp->state = LPFC_NVMET_STE_RCV;
+		ctxp->state = LPFC_NVME_STE_RCV;
 		ctxp->entry_cnt = 1;
 		ctxp->flag = 0;
 		ctxp->ctxbuf = ctx_buf;
@@ -453,7 +469,7 @@ lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
 
 		/* Indicate that a replacement buffer has been posted */
 		spin_lock_irqsave(&ctxp->ctxlock, iflag);
-		ctxp->flag |= LPFC_NVMET_CTX_REUSE_WQ;
+		ctxp->flag |= LPFC_NVME_CTX_REUSE_WQ;
 		spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
 
 		if (!queue_work(phba->wq, &ctx_buf->defer_work)) {
@@ -495,7 +511,7 @@ lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 static void
 lpfc_nvmet_ktime(struct lpfc_hba *phba,
-		 struct lpfc_nvmet_rcv_ctx *ctxp)
+		 struct lpfc_async_xchg_ctx *ctxp)
 {
 	uint64_t seg1, seg2, seg3, seg4, seg5;
 	uint64_t seg6, seg7, seg8, seg9, seg10;
@@ -704,16 +720,16 @@ lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 {
 	struct lpfc_nvmet_tgtport *tgtp;
 	struct nvmefc_tgt_fcp_req *rsp;
-	struct lpfc_nvmet_rcv_ctx *ctxp;
+	struct lpfc_async_xchg_ctx *ctxp;
 	uint32_t status, result, op, start_clean, logerr;
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 	int id;
 #endif
 
 	ctxp = cmdwqe->context2;
-	ctxp->flag &= ~LPFC_NVMET_IO_INP;
+	ctxp->flag &= ~LPFC_NVME_IO_INP;
 
-	rsp = &ctxp->ctx.fcp_req;
+	rsp = &ctxp->hdlrctx.fcp_req;
 	op = rsp->op;
 
 	status = bf_get(lpfc_wcqe_c_status, wcqe);
@@ -740,13 +756,13 @@ lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 
 		/* pick up SLI4 exhange busy condition */
 		if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
-			ctxp->flag |= LPFC_NVMET_XBUSY;
+			ctxp->flag |= LPFC_NVME_XBUSY;
 			logerr |= LOG_NVME_ABTS;
 			if (tgtp)
 				atomic_inc(&tgtp->xmt_fcp_rsp_xb_set);
 
 		} else {
-			ctxp->flag &= ~LPFC_NVMET_XBUSY;
+			ctxp->flag &= ~LPFC_NVME_XBUSY;
 		}
 
 		lpfc_printf_log(phba, KERN_INFO, logerr,
@@ -768,7 +784,7 @@ lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 	if ((op == NVMET_FCOP_READDATA_RSP) ||
 	    (op == NVMET_FCOP_RSP)) {
 		/* Sanity check */
-		ctxp->state = LPFC_NVMET_STE_DONE;
+		ctxp->state = LPFC_NVME_STE_DONE;
 		ctxp->entry_cnt++;
 
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
@@ -826,17 +842,32 @@ lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 #endif
 }
 
-static int
-lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport,
-		      struct nvmefc_tgt_ls_req *rsp)
+/**
+ * __lpfc_nvme_xmt_ls_rsp - Generic service routine to issue transmit
+ *         an NVME LS rsp for a prior NVME LS request that was received.
+ * @axchg: pointer to exchange context for the NVME LS request the response
+ *         is for.
+ * @ls_rsp: pointer to the transport LS RSP that is to be sent
+ * @xmt_ls_rsp_cmp: completion routine to call upon RSP transmit done
+ *
+ * This routine is used to format and send a WQE to transmit a NVME LS
+ * Response.  The response is for a prior NVME LS request that was
+ * received and posted to the transport.
+ *
+ * Returns:
+ *  0 : if response successfully transmit
+ *  non-zero : if response failed to transmit, of the form -Exxx.
+ **/
+int
+__lpfc_nvme_xmt_ls_rsp(struct lpfc_async_xchg_ctx *axchg,
+			struct nvmefc_ls_rsp *ls_rsp,
+			void (*xmt_ls_rsp_cmp)(struct lpfc_hba *phba,
+				struct lpfc_iocbq *cmdwqe,
+				struct lpfc_wcqe_complete *wcqe))
 {
-	struct lpfc_nvmet_rcv_ctx *ctxp =
-		container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.ls_req);
-	struct lpfc_hba *phba = ctxp->phba;
-	struct hbq_dmabuf *nvmebuf =
-		(struct hbq_dmabuf *)ctxp->rqb_buffer;
+	struct lpfc_hba *phba = axchg->phba;
+	struct hbq_dmabuf *nvmebuf = (struct hbq_dmabuf *)axchg->rqb_buffer;
 	struct lpfc_iocbq *nvmewqeq;
-	struct lpfc_nvmet_tgtport *nvmep = tgtport->private;
 	struct lpfc_dmabuf dmabuf;
 	struct ulp_bde64 bpl;
 	int rc;
@@ -844,34 +875,28 @@ lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport,
 	if (phba->pport->load_flag & FC_UNLOADING)
 		return -ENODEV;
 
-	if (phba->pport->load_flag & FC_UNLOADING)
-		return -ENODEV;
-
 	lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
-			"6023 NVMET LS rsp oxid x%x\n", ctxp->oxid);
+			"6023 NVMEx LS rsp oxid x%x\n", axchg->oxid);
 
-	if ((ctxp->state != LPFC_NVMET_STE_LS_RCV) ||
-	    (ctxp->entry_cnt != 1)) {
-		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
-				"6412 NVMET LS rsp state mismatch "
+	if (axchg->state != LPFC_NVME_STE_LS_RCV || axchg->entry_cnt != 1) {
+		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC | LOG_NVME_IOERR,
+				"6412 NVMEx LS rsp state mismatch "
 				"oxid x%x: %d %d\n",
-				ctxp->oxid, ctxp->state, ctxp->entry_cnt);
+				axchg->oxid, axchg->state, axchg->entry_cnt);
+		return -EALREADY;
 	}
-	ctxp->state = LPFC_NVMET_STE_LS_RSP;
-	ctxp->entry_cnt++;
+	axchg->state = LPFC_NVME_STE_LS_RSP;
+	axchg->entry_cnt++;
 
-	nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, ctxp, rsp->rspdma,
-				      rsp->rsplen);
+	nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, axchg, ls_rsp->rspdma,
+					 ls_rsp->rsplen);
 	if (nvmewqeq == NULL) {
-		atomic_inc(&nvmep->xmt_ls_drop);
-		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
-				"6150 LS Drop IO x%x: Prep\n",
-				ctxp->oxid);
-		lpfc_in_buf_free(phba, &nvmebuf->dbuf);
-		atomic_inc(&nvmep->xmt_ls_abort);
-		lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp,
-						ctxp->sid, ctxp->oxid);
-		return -ENOMEM;
+		lpfc_printf_log(phba, KERN_ERR,
+				LOG_NVME_DISC | LOG_NVME_IOERR | LOG_NVME_ABTS,
+				"6150 NVMEx LS Drop Rsp x%x: Prep\n",
+				axchg->oxid);
+		rc = -ENOMEM;
+		goto out_free_buf;
 	}
 
 	/* Save numBdes for bpl2sgl */
@@ -881,39 +906,106 @@ lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport,
 	dmabuf.virt = &bpl;
 	bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow;
 	bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh;
-	bpl.tus.f.bdeSize = rsp->rsplen;
+	bpl.tus.f.bdeSize = ls_rsp->rsplen;
 	bpl.tus.f.bdeFlags = 0;
 	bpl.tus.w = le32_to_cpu(bpl.tus.w);
+	/*
+	 * Note: although we're using stack space for the dmabuf, the
+	 * call to lpfc_sli4_issue_wqe is synchronous, so it will not
+	 * be referenced after it returns back to this routine.
+	 */
 
-	nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_rsp_cmp;
+	nvmewqeq->wqe_cmpl = xmt_ls_rsp_cmp;
 	nvmewqeq->iocb_cmpl = NULL;
-	nvmewqeq->context2 = ctxp;
+	nvmewqeq->context2 = axchg;
 
-	lpfc_nvmeio_data(phba, "NVMET LS  RESP: xri x%x wqidx x%x len x%x\n",
-			 ctxp->oxid, nvmewqeq->hba_wqidx, rsp->rsplen);
+	lpfc_nvmeio_data(phba, "NVMEx LS RSP: xri x%x wqidx x%x len x%x\n",
+			 axchg->oxid, nvmewqeq->hba_wqidx, ls_rsp->rsplen);
+
+	rc = lpfc_sli4_issue_wqe(phba, axchg->hdwq, nvmewqeq);
+
+	/* clear to be sure there's no reference */
+	nvmewqeq->context3 = NULL;
 
-	rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq);
 	if (rc == WQE_SUCCESS) {
 		/*
 		 * Okay to repost buffer here, but wait till cmpl
 		 * before freeing ctxp and iocbq.
 		 */
 		lpfc_in_buf_free(phba, &nvmebuf->dbuf);
-		atomic_inc(&nvmep->xmt_ls_rsp);
 		return 0;
 	}
-	/* Give back resources */
-	atomic_inc(&nvmep->xmt_ls_drop);
-	lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
-			"6151 LS Drop IO x%x: Issue %d\n",
-			ctxp->oxid, rc);
+
+	lpfc_printf_log(phba, KERN_ERR,
+			LOG_NVME_DISC | LOG_NVME_IOERR | LOG_NVME_ABTS,
+			"6151 NVMEx LS RSP x%x: failed to transmit %d\n",
+			axchg->oxid, rc);
+
+	rc = -ENXIO;
 
 	lpfc_nlp_put(nvmewqeq->context1);
 
+out_free_buf:
+	/* Give back resources */
 	lpfc_in_buf_free(phba, &nvmebuf->dbuf);
-	atomic_inc(&nvmep->xmt_ls_abort);
-	lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid);
-	return -ENXIO;
+
+	/*
+	 * As transport doesn't track completions of responses, if the rsp
+	 * fails to send, the transport will effectively ignore the rsp
+	 * and consider the LS done. However, the driver has an active
+	 * exchange open for the LS - so be sure to abort the exchange
+	 * if the response isn't sent.
+	 */
+	lpfc_nvme_unsol_ls_issue_abort(phba, axchg, axchg->sid, axchg->oxid);
+	return rc;
+}
+
+/**
+ * lpfc_nvmet_xmt_ls_rsp - Transmit NVME LS response
+ * @tgtport: pointer to target port that NVME LS is to be transmit from.
+ * @ls_rsp: pointer to the transport LS RSP that is to be sent
+ *
+ * Driver registers this routine to transmit responses for received NVME
+ * LS requests.
+ *
+ * This routine is used to format and send a WQE to transmit a NVME LS
+ * Response. The ls_rsp is used to reverse-map the LS to the original
+ * NVME LS request sequence, which provides addressing information for
+ * the remote port the LS to be sent to, as well as the exchange id
+ * that is the LS is bound to.
+ *
+ * Returns:
+ *  0 : if response successfully transmit
+ *  non-zero : if response failed to transmit, of the form -Exxx.
+ **/
+static int
+lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport,
+		      struct nvmefc_ls_rsp *ls_rsp)
+{
+	struct lpfc_async_xchg_ctx *axchg =
+		container_of(ls_rsp, struct lpfc_async_xchg_ctx, ls_rsp);
+	struct lpfc_nvmet_tgtport *nvmep = tgtport->private;
+	int rc;
+
+	if (axchg->phba->pport->load_flag & FC_UNLOADING)
+		return -ENODEV;
+
+	rc = __lpfc_nvme_xmt_ls_rsp(axchg, ls_rsp, lpfc_nvmet_xmt_ls_rsp_cmp);
+
+	if (rc) {
+		atomic_inc(&nvmep->xmt_ls_drop);
+		/*
+		 * unless the failure is due to having already sent
+		 * the response, an abort will be generated for the
+		 * exchange if the rsp can't be sent.
+		 */
+		if (rc != -EALREADY)
+			atomic_inc(&nvmep->xmt_ls_abort);
+		return rc;
+	}
+
+	atomic_inc(&nvmep->xmt_ls_rsp);
+	return 0;
 }
 
 static int
@@ -921,8 +1013,8 @@ lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport,
 		      struct nvmefc_tgt_fcp_req *rsp)
 {
 	struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
-	struct lpfc_nvmet_rcv_ctx *ctxp =
-		container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
+	struct lpfc_async_xchg_ctx *ctxp =
+		container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req);
 	struct lpfc_hba *phba = ctxp->phba;
 	struct lpfc_queue *wq;
 	struct lpfc_iocbq *nvmewqeq;
@@ -968,8 +1060,8 @@ lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport,
 #endif
 
 	/* Sanity check */
-	if ((ctxp->flag & LPFC_NVMET_ABTS_RCV) ||
-	    (ctxp->state == LPFC_NVMET_STE_ABORT)) {
+	if ((ctxp->flag & LPFC_NVME_ABTS_RCV) ||
+	    (ctxp->state == LPFC_NVME_STE_ABORT)) {
 		atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
 		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
 				"6102 IO oxid x%x aborted\n",
@@ -997,7 +1089,7 @@ lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport,
 	lpfc_nvmeio_data(phba, "NVMET FCP CMND: xri x%x op x%x len x%x\n",
 			 ctxp->oxid, rsp->op, rsp->rsplen);
 
-	ctxp->flag |= LPFC_NVMET_IO_INP;
+	ctxp->flag |= LPFC_NVME_IO_INP;
 	rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq);
 	if (rc == WQE_SUCCESS) {
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
@@ -1016,7 +1108,7 @@ lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport,
 		 * WQ was full, so queue nvmewqeq to be sent after
 		 * WQE release CQE
 		 */
-		ctxp->flag |= LPFC_NVMET_DEFER_WQFULL;
+		ctxp->flag |= LPFC_NVME_DEFER_WQFULL;
 		wq = ctxp->hdwq->io_wq;
 		pring = wq->pring;
 		spin_lock_irqsave(&pring->ring_lock, iflags);
@@ -1056,8 +1148,8 @@ lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport,
 			 struct nvmefc_tgt_fcp_req *req)
 {
 	struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
-	struct lpfc_nvmet_rcv_ctx *ctxp =
-		container_of(req, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
+	struct lpfc_async_xchg_ctx *ctxp =
+		container_of(req, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req);
 	struct lpfc_hba *phba = ctxp->phba;
 	struct lpfc_queue *wq;
 	unsigned long flags;
@@ -1085,13 +1177,13 @@ lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport,
 	/* Since iaab/iaar are NOT set, we need to check
 	 * if the firmware is in process of aborting IO
 	 */
-	if (ctxp->flag & (LPFC_NVMET_XBUSY | LPFC_NVMET_ABORT_OP)) {
+	if (ctxp->flag & (LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP)) {
 		spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 		return;
 	}
-	ctxp->flag |= LPFC_NVMET_ABORT_OP;
+	ctxp->flag |= LPFC_NVME_ABORT_OP;
 
-	if (ctxp->flag & LPFC_NVMET_DEFER_WQFULL) {
+	if (ctxp->flag & LPFC_NVME_DEFER_WQFULL) {
 		spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 		lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
 						 ctxp->oxid);
@@ -1101,11 +1193,11 @@ lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport,
 	}
 	spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 
-	/* An state of LPFC_NVMET_STE_RCV means we have just received
+	/* A state of LPFC_NVME_STE_RCV means we have just received
 	 * the NVME command and have not started processing it.
 	 * (by issuing any IO WQEs on this exchange yet)
 	 */
-	if (ctxp->state == LPFC_NVMET_STE_RCV)
+	if (ctxp->state == LPFC_NVME_STE_RCV)
 		lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
 						 ctxp->oxid);
 	else
@@ -1118,26 +1210,26 @@ lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport,
 			   struct nvmefc_tgt_fcp_req *rsp)
 {
 	struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
-	struct lpfc_nvmet_rcv_ctx *ctxp =
-		container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
+	struct lpfc_async_xchg_ctx *ctxp =
+		container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req);
 	struct lpfc_hba *phba = ctxp->phba;
 	unsigned long flags;
 	bool aborting = false;
 
 	spin_lock_irqsave(&ctxp->ctxlock, flags);
-	if (ctxp->flag & LPFC_NVMET_XBUSY)
+	if (ctxp->flag & LPFC_NVME_XBUSY)
 		lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
 				"6027 NVMET release with XBUSY flag x%x"
 				" oxid x%x\n",
 				ctxp->flag, ctxp->oxid);
-	else if (ctxp->state != LPFC_NVMET_STE_DONE &&
-		 ctxp->state != LPFC_NVMET_STE_ABORT)
+	else if (ctxp->state != LPFC_NVME_STE_DONE &&
+		 ctxp->state != LPFC_NVME_STE_ABORT)
 		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
 				"6413 NVMET release bad state %d %d oxid x%x\n",
 				ctxp->state, ctxp->entry_cnt, ctxp->oxid);
 
-	if ((ctxp->flag & LPFC_NVMET_ABORT_OP) ||
-	    (ctxp->flag & LPFC_NVMET_XBUSY)) {
+	if ((ctxp->flag & LPFC_NVME_ABORT_OP) ||
+	    (ctxp->flag & LPFC_NVME_XBUSY)) {
 		aborting = true;
 		/* let the abort path do the real release */
 		lpfc_nvmet_defer_release(phba, ctxp);
@@ -1148,7 +1240,7 @@ lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport,
 			 ctxp->state, aborting);
 
 	atomic_inc(&lpfc_nvmep->xmt_fcp_release);
-	ctxp->flag &= ~LPFC_NVMET_TNOTIFY;
+	ctxp->flag &= ~LPFC_NVME_TNOTIFY;
 
 	if (aborting)
 		return;
@@ -1161,8 +1253,8 @@ lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port *tgtport,
 		     struct nvmefc_tgt_fcp_req *rsp)
 {
 	struct lpfc_nvmet_tgtport *tgtp;
-	struct lpfc_nvmet_rcv_ctx *ctxp =
-		container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
+	struct lpfc_async_xchg_ctx *ctxp =
+		container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req);
 	struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer;
 	struct lpfc_hba *phba = ctxp->phba;
 	unsigned long iflag;
@@ -1190,6 +1282,116 @@ lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port *tgtport,
 	spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
 }
 
+/**
+ * lpfc_nvmet_ls_req_cmp - completion handler for a nvme ls request
+ * @phba: Pointer to HBA context object
+ * @cmdwqe: Pointer to driver command WQE object.
+ * @wcqe: Pointer to driver response CQE object.
+ *
+ * This function is the completion handler for NVME LS requests.
+ * The function updates any states and statistics, then calls the
+ * generic completion handler to finish completion of the request.
+ **/
+static void
+lpfc_nvmet_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
+		       struct lpfc_wcqe_complete *wcqe)
+{
+	__lpfc_nvme_ls_req_cmp(phba, cmdwqe->vport, cmdwqe, wcqe);
+}
+
+/**
+ * lpfc_nvmet_ls_req - Issue an Link Service request
+ * @targetport - pointer to target instance registered with nvmet transport.
+ * @hosthandle - hosthandle set by the driver in a prior ls_rqst_rcv.
+ *               Driver sets this value to the ndlp pointer.
+ * @pnvme_lsreq - the transport nvme_ls_req structure for the LS
+ *
+ * Driver registers this routine to handle any link service request
+ * from the nvme_fc transport to a remote nvme-aware port.
+ *
+ * Return value :
+ *   0 - Success
+ *   non-zero: various error codes, in form of -Exxx
+ **/
+static int
+lpfc_nvmet_ls_req(struct nvmet_fc_target_port *targetport,
+		  void *hosthandle,
+		  struct nvmefc_ls_req *pnvme_lsreq)
+{
+	struct lpfc_nvmet_tgtport *lpfc_nvmet = targetport->private;
+	struct lpfc_hba *phba;
+	struct lpfc_nodelist *ndlp;
+	int ret;
+	u32 hstate;
+
+	if (!lpfc_nvmet)
+		return -EINVAL;
+
+	phba = lpfc_nvmet->phba;
+	if (phba->pport->load_flag & FC_UNLOADING)
+		return -EINVAL;
+
+	hstate = atomic_read(&lpfc_nvmet->state);
+	if (hstate == LPFC_NVMET_INV_HOST_ACTIVE)
+		return -EACCES;
+
+	ndlp = (struct lpfc_nodelist *)hosthandle;
+
+	ret = __lpfc_nvme_ls_req(phba->pport, ndlp, pnvme_lsreq,
+				 lpfc_nvmet_ls_req_cmp);
+
+	return ret;
+}
+
+/**
+ * lpfc_nvmet_ls_abort - Abort a prior NVME LS request
+ * @targetport: Transport targetport, that LS was issued from.
+ * @hosthandle - hosthandle set by the driver in a prior ls_rqst_rcv.
+ *               Driver sets this value to the ndlp pointer.
+ * @pnvme_lsreq - the transport nvme_ls_req structure for LS to be aborted
+ *
+ * Driver registers this routine to abort an NVME LS request that is
+ * in progress (from the transports perspective).
+ **/
+static void
+lpfc_nvmet_ls_abort(struct nvmet_fc_target_port *targetport,
+		    void *hosthandle,
+		    struct nvmefc_ls_req *pnvme_lsreq)
+{
+	struct lpfc_nvmet_tgtport *lpfc_nvmet = targetport->private;
+	struct lpfc_hba *phba;
+	struct lpfc_nodelist *ndlp;
+	int ret;
+
+	phba = lpfc_nvmet->phba;
+	if (phba->pport->load_flag & FC_UNLOADING)
+		return;
+
+	ndlp = (struct lpfc_nodelist *)hosthandle;
+
+	ret = __lpfc_nvme_ls_abort(phba->pport, ndlp, pnvme_lsreq);
+	if (!ret)
+		atomic_inc(&lpfc_nvmet->xmt_ls_abort);
+}
+
+static void
+lpfc_nvmet_host_release(void *hosthandle)
+{
+	struct lpfc_nodelist *ndlp = hosthandle;
+	struct lpfc_hba *phba = NULL;
+	struct lpfc_nvmet_tgtport *tgtp;
+
+	phba = ndlp->phba;
+	if (!phba->targetport || !phba->targetport->private)
+		return;
+
+	lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
+			"6202 NVMET XPT releasing hosthandle x%px\n",
+			hosthandle);
+	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+	atomic_set(&tgtp->state, 0);
+}
+
 static void
 lpfc_nvmet_discovery_event(struct nvmet_fc_target_port *tgtport)
 {
@@ -1214,6 +1416,9 @@ static struct nvmet_fc_target_template lpfc_tgttemplate = {
 	.fcp_req_release = lpfc_nvmet_xmt_fcp_release,
 	.defer_rcv	= lpfc_nvmet_defer_rcv,
 	.discovery_event = lpfc_nvmet_discovery_event,
+	.ls_req         = lpfc_nvmet_ls_req,
+	.ls_abort       = lpfc_nvmet_ls_abort,
+	.host_release   = lpfc_nvmet_host_release,
 
 	.max_hw_queues  = 1,
 	.max_sgl_segments = LPFC_NVMET_DEFAULT_SEGS,
@@ -1224,6 +1429,7 @@ static struct nvmet_fc_target_template lpfc_tgttemplate = {
 	.target_features = 0,
 	/* sizes of additional private data for data structures */
 	.target_priv_sz = sizeof(struct lpfc_nvmet_tgtport),
+	.lsrqst_priv_sz = 0,
 };
 
 static void
@@ -1368,7 +1574,7 @@ lpfc_nvmet_setup_io_context(struct lpfc_hba *phba)
 			return -ENOMEM;
 		}
 		ctx_buf->context->ctxbuf = ctx_buf;
-		ctx_buf->context->state = LPFC_NVMET_STE_FREE;
+		ctx_buf->context->state = LPFC_NVME_STE_FREE;
 
 		ctx_buf->iocbq = lpfc_sli_get_iocbq(phba);
 		if (!ctx_buf->iocbq) {
@@ -1568,7 +1774,7 @@ lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba,
 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
 	uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
 	uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
-	struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp;
+	struct lpfc_async_xchg_ctx *ctxp, *next_ctxp;
 	struct lpfc_nvmet_tgtport *tgtp;
 	struct nvmefc_tgt_fcp_req *req = NULL;
 	struct lpfc_nodelist *ndlp;
@@ -1599,12 +1805,12 @@ lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba,
 		/* Check if we already received a free context call
 		 * and we have completed processing an abort situation.
 		 */
-		if (ctxp->flag & LPFC_NVMET_CTX_RLS &&
-		    !(ctxp->flag & LPFC_NVMET_ABORT_OP)) {
+		if (ctxp->flag & LPFC_NVME_CTX_RLS &&
+		    !(ctxp->flag & LPFC_NVME_ABORT_OP)) {
 			list_del_init(&ctxp->list);
 			released = true;
 		}
-		ctxp->flag &= ~LPFC_NVMET_XBUSY;
+		ctxp->flag &= ~LPFC_NVME_XBUSY;
 		spin_unlock(&ctxp->ctxlock);
 		spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
 
@@ -1646,15 +1852,15 @@ lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba,
 				rxid);
 
 		spin_lock_irqsave(&ctxp->ctxlock, iflag);
-		ctxp->flag |= LPFC_NVMET_ABTS_RCV;
-		ctxp->state = LPFC_NVMET_STE_ABORT;
+		ctxp->flag |= LPFC_NVME_ABTS_RCV;
+		ctxp->state = LPFC_NVME_STE_ABORT;
 		spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
 
 		lpfc_nvmeio_data(phba,
 				 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
 				 xri, raw_smp_processor_id(), 0);
 
-		req = &ctxp->ctx.fcp_req;
+		req = &ctxp->hdlrctx.fcp_req;
 		if (req)
 			nvmet_fc_rcv_fcp_abort(phba->targetport, req);
 	}
@@ -1667,7 +1873,7 @@ lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport,
 {
 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
 	struct lpfc_hba *phba = vport->phba;
-	struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp;
+	struct lpfc_async_xchg_ctx *ctxp, *next_ctxp;
 	struct nvmefc_tgt_fcp_req *rsp;
 	uint32_t sid;
 	uint16_t oxid, xri;
@@ -1690,7 +1896,7 @@ lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport,
 		spin_unlock_irqrestore(&phba->hbalock, iflag);
 
 		spin_lock_irqsave(&ctxp->ctxlock, iflag);
-		ctxp->flag |= LPFC_NVMET_ABTS_RCV;
+		ctxp->flag |= LPFC_NVME_ABTS_RCV;
 		spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
 
 		lpfc_nvmeio_data(phba,
@@ -1700,7 +1906,7 @@ lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport,
 		lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
 				"6319 NVMET Rcv ABTS:acc xri x%x\n", xri);
 
-		rsp = &ctxp->ctx.fcp_req;
+		rsp = &ctxp->hdlrctx.fcp_req;
 		nvmet_fc_rcv_fcp_abort(phba->targetport, rsp);
 
 		/* Respond with BA_ACC accordingly */
@@ -1759,7 +1965,7 @@ lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport,
 		xri = ctxp->ctxbuf->sglq->sli4_xritag;
 
 		spin_lock_irqsave(&ctxp->ctxlock, iflag);
-		ctxp->flag |= (LPFC_NVMET_ABTS_RCV | LPFC_NVMET_ABORT_OP);
+		ctxp->flag |= (LPFC_NVME_ABTS_RCV | LPFC_NVME_ABORT_OP);
 		spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
 
 		lpfc_nvmeio_data(phba,
@@ -1771,10 +1977,10 @@ lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport,
 				"flag x%x state x%x\n",
 				ctxp->oxid, xri, ctxp->flag, ctxp->state);
 
-		if (ctxp->flag & LPFC_NVMET_TNOTIFY) {
+		if (ctxp->flag & LPFC_NVME_TNOTIFY) {
 			/* Notify the transport */
 			nvmet_fc_rcv_fcp_abort(phba->targetport,
-					       &ctxp->ctx.fcp_req);
+					       &ctxp->hdlrctx.fcp_req);
 		} else {
 			cancel_work_sync(&ctxp->ctxbuf->defer_work);
 			spin_lock_irqsave(&ctxp->ctxlock, iflag);
@@ -1802,7 +2008,7 @@ lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport,
 
 static void
 lpfc_nvmet_wqfull_flush(struct lpfc_hba *phba, struct lpfc_queue *wq,
-			struct lpfc_nvmet_rcv_ctx *ctxp)
+			struct lpfc_async_xchg_ctx *ctxp)
 {
 	struct lpfc_sli_ring *pring;
 	struct lpfc_iocbq *nvmewqeq;
@@ -1853,7 +2059,7 @@ lpfc_nvmet_wqfull_process(struct lpfc_hba *phba,
 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
 	struct lpfc_sli_ring *pring;
 	struct lpfc_iocbq *nvmewqeq;
-	struct lpfc_nvmet_rcv_ctx *ctxp;
+	struct lpfc_async_xchg_ctx *ctxp;
 	unsigned long iflags;
 	int rc;
 
@@ -1867,7 +2073,7 @@ lpfc_nvmet_wqfull_process(struct lpfc_hba *phba,
 		list_remove_head(&wq->wqfull_list, nvmewqeq, struct lpfc_iocbq,
 				 list);
 		spin_unlock_irqrestore(&pring->ring_lock, iflags);
-		ctxp = (struct lpfc_nvmet_rcv_ctx *)nvmewqeq->context2;
+		ctxp = (struct lpfc_async_xchg_ctx *)nvmewqeq->context2;
 		rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq);
 		spin_lock_irqsave(&pring->ring_lock, iflags);
 		if (rc == -EBUSY) {
@@ -1879,7 +2085,7 @@ lpfc_nvmet_wqfull_process(struct lpfc_hba *phba,
 		if (rc == WQE_SUCCESS) {
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 			if (ctxp->ts_cmd_nvme) {
-				if (ctxp->ctx.fcp_req.op == NVMET_FCOP_RSP)
+				if (ctxp->hdlrctx.fcp_req.op == NVMET_FCOP_RSP)
 					ctxp->ts_status_wqput = ktime_get_ns();
 				else
 					ctxp->ts_data_wqput = ktime_get_ns();
@@ -1926,114 +2132,61 @@ lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba)
 }
 
 /**
- * lpfc_nvmet_unsol_ls_buffer - Process an unsolicited event data buffer
+ * lpfc_nvmet_handle_lsreq - Process an NVME LS request
  * @phba: pointer to lpfc hba data structure.
- * @pring: pointer to a SLI ring.
- * @nvmebuf: pointer to lpfc nvme command HBQ data structure.
+ * @axchg: pointer to exchange context for the NVME LS request
  *
- * This routine is used for processing the WQE associated with a unsolicited
- * event. It first determines whether there is an existing ndlp that matches
- * the DID from the unsolicited WQE. If not, it will create a new one with
- * the DID from the unsolicited WQE. The ELS command from the unsolicited
- * WQE is then used to invoke the proper routine and to set up proper state
- * of the discovery state machine.
- **/
-static void
-lpfc_nvmet_unsol_ls_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
-			   struct hbq_dmabuf *nvmebuf)
+ * This routine is used for processing an asychronously received NVME LS
+ * request. Any remaining validation is done and the LS is then forwarded
+ * to the nvmet-fc transport via nvmet_fc_rcv_ls_req().
+ *
+ * The calling sequence should be: nvmet_fc_rcv_ls_req() -> (processing)
+ * -> lpfc_nvmet_xmt_ls_rsp/cmp -> req->done.
+ * lpfc_nvme_xmt_ls_rsp_cmp should free the allocated axchg.
+ *
+ * Returns 0 if LS was handled and delivered to the transport
+ * Returns 1 if LS failed to be handled and should be dropped
+ */
+int
+lpfc_nvmet_handle_lsreq(struct lpfc_hba *phba,
+			struct lpfc_async_xchg_ctx *axchg)
 {
 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
-	struct lpfc_nvmet_tgtport *tgtp;
-	struct fc_frame_header *fc_hdr;
-	struct lpfc_nvmet_rcv_ctx *ctxp;
-	uint32_t *payload;
-	uint32_t size, oxid, sid, rc;
-
-
-	if (!nvmebuf || !phba->targetport) {
-		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
-				"6154 LS Drop IO\n");
-		oxid = 0;
-		size = 0;
-		sid = 0;
-		ctxp = NULL;
-		goto dropit;
-	}
-
-	fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
-	oxid = be16_to_cpu(fc_hdr->fh_ox_id);
-
-	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
-	payload = (uint32_t *)(nvmebuf->dbuf.virt);
-	size = bf_get(lpfc_rcqe_length,  &nvmebuf->cq_event.cqe.rcqe_cmpl);
-	sid = sli4_sid_from_fc_hdr(fc_hdr);
+	struct lpfc_nvmet_tgtport *tgtp = phba->targetport->private;
+	uint32_t *payload = axchg->payload;
+	int rc;
 
-	ctxp = kzalloc(sizeof(struct lpfc_nvmet_rcv_ctx), GFP_ATOMIC);
-	if (ctxp == NULL) {
-		atomic_inc(&tgtp->rcv_ls_req_drop);
-		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
-				"6155 LS Drop IO x%x: Alloc\n",
-				oxid);
-dropit:
-		lpfc_nvmeio_data(phba, "NVMET LS  DROP: "
-				 "xri x%x sz %d from %06x\n",
-				 oxid, size, sid);
-		lpfc_in_buf_free(phba, &nvmebuf->dbuf);
-		return;
-	}
-	ctxp->phba = phba;
-	ctxp->size = size;
-	ctxp->oxid = oxid;
-	ctxp->sid = sid;
-	ctxp->wqeq = NULL;
-	ctxp->state = LPFC_NVMET_STE_LS_RCV;
-	ctxp->entry_cnt = 1;
-	ctxp->rqb_buffer = (void *)nvmebuf;
-	ctxp->hdwq = &phba->sli4_hba.hdwq[0];
+	atomic_inc(&tgtp->rcv_ls_req_in);
 
-	lpfc_nvmeio_data(phba, "NVMET LS   RCV: xri x%x sz %d from %06x\n",
-			 oxid, size, sid);
 	/*
-	 * The calling sequence should be:
-	 * nvmet_fc_rcv_ls_req -> lpfc_nvmet_xmt_ls_rsp/cmp ->_req->done
-	 * lpfc_nvmet_xmt_ls_rsp_cmp should free the allocated ctxp.
+	 * Driver passes the ndlp as the hosthandle argument allowing
+	 * the transport to generate LS requests for any associateions
+	 * that are created.
 	 */
-	atomic_inc(&tgtp->rcv_ls_req_in);
-	rc = nvmet_fc_rcv_ls_req(phba->targetport, &ctxp->ctx.ls_req,
-				 payload, size);
+	rc = nvmet_fc_rcv_ls_req(phba->targetport, axchg->ndlp, &axchg->ls_rsp,
+				 axchg->payload, axchg->size);
 
 	lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
 			"6037 NVMET Unsol rcv: sz %d rc %d: %08x %08x %08x "
-			"%08x %08x %08x\n", size, rc,
+			"%08x %08x %08x\n", axchg->size, rc,
 			*payload, *(payload+1), *(payload+2),
 			*(payload+3), *(payload+4), *(payload+5));
 
-	if (rc == 0) {
+	if (!rc) {
 		atomic_inc(&tgtp->rcv_ls_req_out);
-		return;
+		return 0;
 	}
 
-	lpfc_nvmeio_data(phba, "NVMET LS  DROP: xri x%x sz %d from %06x\n",
-			 oxid, size, sid);
-
 	atomic_inc(&tgtp->rcv_ls_req_drop);
-	lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
-			"6156 LS Drop IO x%x: nvmet_fc_rcv_ls_req %d\n",
-			ctxp->oxid, rc);
-
-	/* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */
-	lpfc_in_buf_free(phba, &nvmebuf->dbuf);
-
-	atomic_inc(&tgtp->xmt_ls_abort);
-	lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, sid, oxid);
 #endif
+	return 1;
 }
 
 static void
 lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf)
 {
 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
-	struct lpfc_nvmet_rcv_ctx *ctxp = ctx_buf->context;
+	struct lpfc_async_xchg_ctx *ctxp = ctx_buf->context;
 	struct lpfc_hba *phba = ctxp->phba;
 	struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer;
 	struct lpfc_nvmet_tgtport *tgtp;
@@ -2054,7 +2207,7 @@ lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf)
 		return;
 	}
 
-	if (ctxp->flag & LPFC_NVMET_ABTS_RCV) {
+	if (ctxp->flag & LPFC_NVME_ABTS_RCV) {
 		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
 				"6324 IO oxid x%x aborted\n",
 				ctxp->oxid);
@@ -2063,7 +2216,7 @@ lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf)
 
 	payload = (uint32_t *)(nvmebuf->dbuf.virt);
 	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
-	ctxp->flag |= LPFC_NVMET_TNOTIFY;
+	ctxp->flag |= LPFC_NVME_TNOTIFY;
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 	if (ctxp->ts_isr_cmd)
 		ctxp->ts_cmd_nvme = ktime_get_ns();
@@ -2077,13 +2230,13 @@ lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf)
 	 * A buffer has already been reposted for this IO, so just free
 	 * the nvmebuf.
 	 */
-	rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->ctx.fcp_req,
+	rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->hdlrctx.fcp_req,
 				  payload, ctxp->size);
 	/* Process FCP command */
 	if (rc == 0) {
 		atomic_inc(&tgtp->rcv_fcp_cmd_out);
 		spin_lock_irqsave(&ctxp->ctxlock, iflags);
-		if ((ctxp->flag & LPFC_NVMET_CTX_REUSE_WQ) ||
+		if ((ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) ||
 		    (nvmebuf != ctxp->rqb_buffer)) {
 			spin_unlock_irqrestore(&ctxp->ctxlock, iflags);
 			return;
@@ -2102,7 +2255,7 @@ lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf)
 		atomic_inc(&tgtp->rcv_fcp_cmd_out);
 		atomic_inc(&tgtp->defer_fod);
 		spin_lock_irqsave(&ctxp->ctxlock, iflags);
-		if (ctxp->flag & LPFC_NVMET_CTX_REUSE_WQ) {
+		if (ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) {
 			spin_unlock_irqrestore(&ctxp->ctxlock, iflags);
 			return;
 		}
@@ -2117,7 +2270,7 @@ lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf)
 			phba->sli4_hba.nvmet_mrq_data[qno], 1, qno);
 		return;
 	}
-	ctxp->flag &= ~LPFC_NVMET_TNOTIFY;
+	ctxp->flag &= ~LPFC_NVME_TNOTIFY;
 	atomic_inc(&tgtp->rcv_fcp_cmd_drop);
 	lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
 			"2582 FCP Drop IO x%x: err x%x: x%x x%x x%x\n",
@@ -2224,7 +2377,7 @@ lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba,
 			    uint64_t isr_timestamp,
 			    uint8_t cqflag)
 {
-	struct lpfc_nvmet_rcv_ctx *ctxp;
+	struct lpfc_async_xchg_ctx *ctxp;
 	struct lpfc_nvmet_tgtport *tgtp;
 	struct fc_frame_header *fc_hdr;
 	struct lpfc_nvmet_ctxbuf *ctx_buf;
@@ -2306,11 +2459,11 @@ lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba,
 
 	sid = sli4_sid_from_fc_hdr(fc_hdr);
 
-	ctxp = (struct lpfc_nvmet_rcv_ctx *)ctx_buf->context;
+	ctxp = (struct lpfc_async_xchg_ctx *)ctx_buf->context;
 	spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag);
 	list_add_tail(&ctxp->list, &phba->sli4_hba.t_active_ctx_list);
 	spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag);
-	if (ctxp->state != LPFC_NVMET_STE_FREE) {
+	if (ctxp->state != LPFC_NVME_STE_FREE) {
 		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
 				"6414 NVMET Context corrupt %d %d oxid x%x\n",
 				ctxp->state, ctxp->entry_cnt, ctxp->oxid);
@@ -2322,7 +2475,7 @@ lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba,
 	ctxp->oxid = oxid;
 	ctxp->sid = sid;
 	ctxp->idx = idx;
-	ctxp->state = LPFC_NVMET_STE_RCV;
+	ctxp->state = LPFC_NVME_STE_RCV;
 	ctxp->entry_cnt = 1;
 	ctxp->flag = 0;
 	ctxp->ctxbuf = ctx_buf;
@@ -2369,40 +2522,6 @@ lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba,
 }
 
 /**
- * lpfc_nvmet_unsol_ls_event - Process an unsolicited event from an nvme nport
- * @phba: pointer to lpfc hba data structure.
- * @pring: pointer to a SLI ring.
- * @nvmebuf: pointer to received nvme data structure.
- *
- * This routine is used to process an unsolicited event received from a SLI
- * (Service Level Interface) ring. The actual processing of the data buffer
- * associated with the unsolicited event is done by invoking the routine
- * lpfc_nvmet_unsol_ls_buffer() after properly set up the buffer from the
- * SLI RQ on which the unsolicited event was received.
- **/
-void
-lpfc_nvmet_unsol_ls_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
-			  struct lpfc_iocbq *piocb)
-{
-	struct lpfc_dmabuf *d_buf;
-	struct hbq_dmabuf *nvmebuf;
-
-	d_buf = piocb->context2;
-	nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
-
-	if (!nvmebuf) {
-		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
-				"3015 LS Drop IO\n");
-		return;
-	}
-	if (phba->nvmet_support == 0) {
-		lpfc_in_buf_free(phba, &nvmebuf->dbuf);
-		return;
-	}
-	lpfc_nvmet_unsol_ls_buffer(phba, pring, nvmebuf);
-}
-
-/**
  * lpfc_nvmet_unsol_fcp_event - Process an unsolicited event from an nvme nport
  * @phba: pointer to lpfc hba data structure.
  * @idx: relative index of MRQ vector
@@ -2462,7 +2581,7 @@ lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba,
  **/
 static struct lpfc_iocbq *
 lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba,
-		       struct lpfc_nvmet_rcv_ctx *ctxp,
+		       struct lpfc_async_xchg_ctx *ctxp,
 		       dma_addr_t rspbuf, uint16_t rspsize)
 {
 	struct lpfc_nodelist *ndlp;
@@ -2584,9 +2703,9 @@ nvme_wqe_free_wqeq_exit:
 
 static struct lpfc_iocbq *
 lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
-			struct lpfc_nvmet_rcv_ctx *ctxp)
+			struct lpfc_async_xchg_ctx *ctxp)
 {
-	struct nvmefc_tgt_fcp_req *rsp = &ctxp->ctx.fcp_req;
+	struct nvmefc_tgt_fcp_req *rsp = &ctxp->hdlrctx.fcp_req;
 	struct lpfc_nvmet_tgtport *tgtp;
 	struct sli4_sge *sgl;
 	struct lpfc_nodelist *ndlp;
@@ -2647,9 +2766,9 @@ lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
 	}
 
 	/* Sanity check */
-	if (((ctxp->state == LPFC_NVMET_STE_RCV) &&
+	if (((ctxp->state == LPFC_NVME_STE_RCV) &&
 	    (ctxp->entry_cnt == 1)) ||
-	    (ctxp->state == LPFC_NVMET_STE_DATA)) {
+	    (ctxp->state == LPFC_NVME_STE_DATA)) {
 		wqe = &nvmewqe->wqe;
 	} else {
 		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
@@ -2912,7 +3031,7 @@ lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
 		sgl++;
 		ctxp->offset += cnt;
 	}
-	ctxp->state = LPFC_NVMET_STE_DATA;
+	ctxp->state = LPFC_NVME_STE_DATA;
 	ctxp->entry_cnt++;
 	return nvmewqe;
 }
@@ -2931,7 +3050,7 @@ static void
 lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 			     struct lpfc_wcqe_complete *wcqe)
 {
-	struct lpfc_nvmet_rcv_ctx *ctxp;
+	struct lpfc_async_xchg_ctx *ctxp;
 	struct lpfc_nvmet_tgtport *tgtp;
 	uint32_t result;
 	unsigned long flags;
@@ -2941,23 +3060,23 @@ lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 	result = wcqe->parameter;
 
 	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
-	if (ctxp->flag & LPFC_NVMET_ABORT_OP)
+	if (ctxp->flag & LPFC_NVME_ABORT_OP)
 		atomic_inc(&tgtp->xmt_fcp_abort_cmpl);
 
 	spin_lock_irqsave(&ctxp->ctxlock, flags);
-	ctxp->state = LPFC_NVMET_STE_DONE;
+	ctxp->state = LPFC_NVME_STE_DONE;
 
 	/* Check if we already received a free context call
 	 * and we have completed processing an abort situation.
 	 */
-	if ((ctxp->flag & LPFC_NVMET_CTX_RLS) &&
-	    !(ctxp->flag & LPFC_NVMET_XBUSY)) {
+	if ((ctxp->flag & LPFC_NVME_CTX_RLS) &&
+	    !(ctxp->flag & LPFC_NVME_XBUSY)) {
 		spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
 		list_del_init(&ctxp->list);
 		spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
 		released = true;
 	}
-	ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
+	ctxp->flag &= ~LPFC_NVME_ABORT_OP;
 	spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 	atomic_inc(&tgtp->xmt_abort_rsp);
 
@@ -2981,7 +3100,7 @@ lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 	lpfc_sli_release_iocbq(phba, cmdwqe);
 
 	/* Since iaab/iaar are NOT set, there is no work left.
-	 * For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted
+	 * For LPFC_NVME_XBUSY, lpfc_sli4_nvmet_xri_aborted
 	 * should have been called already.
 	 */
 }
@@ -3000,7 +3119,7 @@ static void
 lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 			       struct lpfc_wcqe_complete *wcqe)
 {
-	struct lpfc_nvmet_rcv_ctx *ctxp;
+	struct lpfc_async_xchg_ctx *ctxp;
 	struct lpfc_nvmet_tgtport *tgtp;
 	unsigned long flags;
 	uint32_t result;
@@ -3020,11 +3139,11 @@ lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 
 	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
 	spin_lock_irqsave(&ctxp->ctxlock, flags);
-	if (ctxp->flag & LPFC_NVMET_ABORT_OP)
+	if (ctxp->flag & LPFC_NVME_ABORT_OP)
 		atomic_inc(&tgtp->xmt_fcp_abort_cmpl);
 
 	/* Sanity check */
-	if (ctxp->state != LPFC_NVMET_STE_ABORT) {
+	if (ctxp->state != LPFC_NVME_STE_ABORT) {
 		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
 				"6112 ABTS Wrong state:%d oxid x%x\n",
 				ctxp->state, ctxp->oxid);
@@ -3033,15 +3152,15 @@ lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 	/* Check if we already received a free context call
 	 * and we have completed processing an abort situation.
 	 */
-	ctxp->state = LPFC_NVMET_STE_DONE;
-	if ((ctxp->flag & LPFC_NVMET_CTX_RLS) &&
-	    !(ctxp->flag & LPFC_NVMET_XBUSY)) {
+	ctxp->state = LPFC_NVME_STE_DONE;
+	if ((ctxp->flag & LPFC_NVME_CTX_RLS) &&
+	    !(ctxp->flag & LPFC_NVME_XBUSY)) {
 		spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
 		list_del_init(&ctxp->list);
 		spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
 		released = true;
 	}
-	ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
+	ctxp->flag &= ~LPFC_NVME_ABORT_OP;
 	spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 	atomic_inc(&tgtp->xmt_abort_rsp);
 
@@ -3062,7 +3181,7 @@ lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 		lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
 
 	/* Since iaab/iaar are NOT set, there is no work left.
-	 * For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted
+	 * For LPFC_NVME_XBUSY, lpfc_sli4_nvmet_xri_aborted
 	 * should have been called already.
 	 */
 }
@@ -3081,15 +3200,17 @@ static void
 lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 			    struct lpfc_wcqe_complete *wcqe)
 {
-	struct lpfc_nvmet_rcv_ctx *ctxp;
+	struct lpfc_async_xchg_ctx *ctxp;
 	struct lpfc_nvmet_tgtport *tgtp;
 	uint32_t result;
 
 	ctxp = cmdwqe->context2;
 	result = wcqe->parameter;
 
-	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
-	atomic_inc(&tgtp->xmt_ls_abort_cmpl);
+	if (phba->nvmet_support) {
+		tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+		atomic_inc(&tgtp->xmt_ls_abort_cmpl);
+	}
 
 	lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
 			"6083 Abort cmpl: ctx x%px WCQE:%08x %08x %08x %08x\n",
@@ -3107,7 +3228,7 @@ lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 		return;
 	}
 
-	if (ctxp->state != LPFC_NVMET_STE_LS_ABORT) {
+	if (ctxp->state != LPFC_NVME_STE_LS_ABORT) {
 		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
 				"6416 NVMET LS abort cmpl state mismatch: "
 				"oxid x%x: %d %d\n",
@@ -3122,10 +3243,10 @@ lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 
 static int
 lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba,
-			     struct lpfc_nvmet_rcv_ctx *ctxp,
+			     struct lpfc_async_xchg_ctx *ctxp,
 			     uint32_t sid, uint16_t xri)
 {
-	struct lpfc_nvmet_tgtport *tgtp;
+	struct lpfc_nvmet_tgtport *tgtp = NULL;
 	struct lpfc_iocbq *abts_wqeq;
 	union lpfc_wqe128 *wqe_abts;
 	struct lpfc_nodelist *ndlp;
@@ -3134,13 +3255,15 @@ lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba,
 			"6067 ABTS: sid %x xri x%x/x%x\n",
 			sid, xri, ctxp->wqeq->sli4_xritag);
 
-	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+	if (phba->nvmet_support && phba->targetport)
+		tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
 
 	ndlp = lpfc_findnode_did(phba->pport, sid);
 	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
 	    ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
 	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
-		atomic_inc(&tgtp->xmt_abort_rsp_error);
+		if (tgtp)
+			atomic_inc(&tgtp->xmt_abort_rsp_error);
 		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
 				"6134 Drop ABTS - wrong NDLP state x%x.\n",
 				(ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);
@@ -3217,7 +3340,7 @@ lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba,
 
 static int
 lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
-			       struct lpfc_nvmet_rcv_ctx *ctxp,
+			       struct lpfc_async_xchg_ctx *ctxp,
 			       uint32_t sid, uint16_t xri)
 {
 	struct lpfc_nvmet_tgtport *tgtp;
@@ -3244,7 +3367,7 @@ lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
 
 		/* No failure to an ABTS request. */
 		spin_lock_irqsave(&ctxp->ctxlock, flags);
-		ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
+		ctxp->flag &= ~LPFC_NVME_ABORT_OP;
 		spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 		return 0;
 	}
@@ -3258,13 +3381,13 @@ lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
 				"6161 ABORT failed: No wqeqs: "
 				"xri: x%x\n", ctxp->oxid);
 		/* No failure to an ABTS request. */
-		ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
+		ctxp->flag &= ~LPFC_NVME_ABORT_OP;
 		spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 		return 0;
 	}
 	abts_wqeq = ctxp->abort_wqeq;
-	ctxp->state = LPFC_NVMET_STE_ABORT;
-	opt = (ctxp->flag & LPFC_NVMET_ABTS_RCV) ? INHIBIT_ABORT : 0;
+	ctxp->state = LPFC_NVME_STE_ABORT;
+	opt = (ctxp->flag & LPFC_NVME_ABTS_RCV) ? INHIBIT_ABORT : 0;
 	spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 
 	/* Announce entry to new IO submit field. */
@@ -3287,7 +3410,7 @@ lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
 				phba->hba_flag, ctxp->oxid);
 		lpfc_sli_release_iocbq(phba, abts_wqeq);
 		spin_lock_irqsave(&ctxp->ctxlock, flags);
-		ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
+		ctxp->flag &= ~LPFC_NVME_ABORT_OP;
 		spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 		return 0;
 	}
@@ -3302,7 +3425,7 @@ lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
 				ctxp->oxid);
 		lpfc_sli_release_iocbq(phba, abts_wqeq);
 		spin_lock_irqsave(&ctxp->ctxlock, flags);
-		ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
+		ctxp->flag &= ~LPFC_NVME_ABORT_OP;
 		spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 		return 0;
 	}
@@ -3331,7 +3454,7 @@ lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
 
 	atomic_inc(&tgtp->xmt_abort_rsp_error);
 	spin_lock_irqsave(&ctxp->ctxlock, flags);
-	ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
+	ctxp->flag &= ~LPFC_NVME_ABORT_OP;
 	spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 	lpfc_sli_release_iocbq(phba, abts_wqeq);
 	lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
@@ -3343,7 +3466,7 @@ lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
 
 static int
 lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba,
-				 struct lpfc_nvmet_rcv_ctx *ctxp,
+				 struct lpfc_async_xchg_ctx *ctxp,
 				 uint32_t sid, uint16_t xri)
 {
 	struct lpfc_nvmet_tgtport *tgtp;
@@ -3358,14 +3481,14 @@ lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba,
 		ctxp->wqeq->hba_wqidx = 0;
 	}
 
-	if (ctxp->state == LPFC_NVMET_STE_FREE) {
+	if (ctxp->state == LPFC_NVME_STE_FREE) {
 		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
 				"6417 NVMET ABORT ctx freed %d %d oxid x%x\n",
 				ctxp->state, ctxp->entry_cnt, ctxp->oxid);
 		rc = WQE_BUSY;
 		goto aerr;
 	}
-	ctxp->state = LPFC_NVMET_STE_ABORT;
+	ctxp->state = LPFC_NVME_STE_ABORT;
 	ctxp->entry_cnt++;
 	rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri);
 	if (rc == 0)
@@ -3387,13 +3510,13 @@ lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba,
 
 aerr:
 	spin_lock_irqsave(&ctxp->ctxlock, flags);
-	if (ctxp->flag & LPFC_NVMET_CTX_RLS) {
+	if (ctxp->flag & LPFC_NVME_CTX_RLS) {
 		spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
 		list_del_init(&ctxp->list);
 		spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
 		released = true;
 	}
-	ctxp->flag &= ~(LPFC_NVMET_ABORT_OP | LPFC_NVMET_CTX_RLS);
+	ctxp->flag &= ~(LPFC_NVME_ABORT_OP | LPFC_NVME_CTX_RLS);
 	spin_unlock_irqrestore(&ctxp->ctxlock, flags);
 
 	atomic_inc(&tgtp->xmt_abort_rsp_error);
@@ -3406,29 +3529,39 @@ aerr:
 	return 1;
 }
 
-static int
-lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba,
-				struct lpfc_nvmet_rcv_ctx *ctxp,
+/**
+ * lpfc_nvme_unsol_ls_issue_abort - issue ABTS on an exchange received
+ *        via async frame receive where the frame is not handled.
+ * @phba: pointer to adapter structure
+ * @ctxp: pointer to the asynchronously received received sequence
+ * @sid: address of the remote port to send the ABTS to
+ * @xri: oxid value to for the ABTS (other side's exchange id).
+ **/
+int
+lpfc_nvme_unsol_ls_issue_abort(struct lpfc_hba *phba,
+				struct lpfc_async_xchg_ctx *ctxp,
 				uint32_t sid, uint16_t xri)
 {
-	struct lpfc_nvmet_tgtport *tgtp;
+	struct lpfc_nvmet_tgtport *tgtp = NULL;
 	struct lpfc_iocbq *abts_wqeq;
 	unsigned long flags;
 	int rc;
 
-	if ((ctxp->state == LPFC_NVMET_STE_LS_RCV && ctxp->entry_cnt == 1) ||
-	    (ctxp->state == LPFC_NVMET_STE_LS_RSP && ctxp->entry_cnt == 2)) {
-		ctxp->state = LPFC_NVMET_STE_LS_ABORT;
+	if ((ctxp->state == LPFC_NVME_STE_LS_RCV && ctxp->entry_cnt == 1) ||
+	    (ctxp->state == LPFC_NVME_STE_LS_RSP && ctxp->entry_cnt == 2)) {
+		ctxp->state = LPFC_NVME_STE_LS_ABORT;
 		ctxp->entry_cnt++;
 	} else {
 		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
 				"6418 NVMET LS abort state mismatch "
 				"IO x%x: %d %d\n",
 				ctxp->oxid, ctxp->state, ctxp->entry_cnt);
-		ctxp->state = LPFC_NVMET_STE_LS_ABORT;
+		ctxp->state = LPFC_NVME_STE_LS_ABORT;
 	}
 
-	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+	if (phba->nvmet_support && phba->targetport)
+		tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+
 	if (!ctxp->wqeq) {
 		/* Issue ABTS for this WQE based on iotag */
 		ctxp->wqeq = lpfc_sli_get_iocbq(phba);
@@ -3455,16 +3588,44 @@ lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba,
 	rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq);
 	spin_unlock_irqrestore(&phba->hbalock, flags);
 	if (rc == WQE_SUCCESS) {
-		atomic_inc(&tgtp->xmt_abort_unsol);
+		if (tgtp)
+			atomic_inc(&tgtp->xmt_abort_unsol);
 		return 0;
 	}
 out:
-	atomic_inc(&tgtp->xmt_abort_rsp_error);
+	if (tgtp)
+		atomic_inc(&tgtp->xmt_abort_rsp_error);
 	abts_wqeq->context2 = NULL;
 	abts_wqeq->context3 = NULL;
 	lpfc_sli_release_iocbq(phba, abts_wqeq);
-	kfree(ctxp);
 	lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
 			"6056 Failed to Issue ABTS. Status x%x\n", rc);
-	return 0;
+	return 1;
+}
+
+/**
+ * lpfc_nvmet_invalidate_host
+ *
+ * @phba - pointer to the driver instance bound to an adapter port.
+ * @ndlp - pointer to an lpfc_nodelist type
+ *
+ * This routine upcalls the nvmet transport to invalidate an NVME
+ * host to which this target instance had active connections.
+ */
+void
+lpfc_nvmet_invalidate_host(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
+{
+	struct lpfc_nvmet_tgtport *tgtp;
+
+	lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_NVME_ABTS,
+			"6203 Invalidating hosthandle x%px\n",
+			ndlp);
+
+	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+	atomic_set(&tgtp->state, LPFC_NVMET_INV_HOST_ACTIVE);
+
+#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
+	/* Need to get the nvmet_fc_target_port pointer here.*/
+	nvmet_fc_invalidate_host(phba->targetport, ndlp);
+#endif
 }
diff --git a/drivers/scsi/lpfc/lpfc_nvmet.h b/drivers/scsi/lpfc/lpfc_nvmet.h
deleted file mode 100644
index b80b1639b9a7..000000000000
--- a/drivers/scsi/lpfc/lpfc_nvmet.h
+++ /dev/null
@@ -1,158 +0,0 @@
-/*******************************************************************
- * This file is part of the Emulex Linux Device Driver for         *
- * Fibre Channel Host Bus Adapters.                                *
- * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term *
- * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
- * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
- * EMULEX and SLI are trademarks of Emulex.                        *
- * www.broadcom.com                                                *
- * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
- *                                                                 *
- * This program is free software; you can redistribute it and/or   *
- * modify it under the terms of version 2 of the GNU General       *
- * Public License as published by the Free Software Foundation.    *
- * This program is distributed in the hope that it will be useful. *
- * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
- * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
- * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
- * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
- * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
- * more details, a copy of which can be found in the file COPYING  *
- * included with this package.                                     *
- ********************************************************************/
-
-#define LPFC_NVMET_DEFAULT_SEGS		(64 + 1)	/* 256K IOs */
-#define LPFC_NVMET_RQE_MIN_POST		128
-#define LPFC_NVMET_RQE_DEF_POST		512
-#define LPFC_NVMET_RQE_DEF_COUNT	2048
-#define LPFC_NVMET_SUCCESS_LEN		12
-
-#define LPFC_NVMET_MRQ_AUTO		0
-#define LPFC_NVMET_MRQ_MAX		16
-
-#define LPFC_NVMET_WAIT_TMO		(5 * MSEC_PER_SEC)
-
-/* Used for NVME Target */
-struct lpfc_nvmet_tgtport {
-	struct lpfc_hba *phba;
-	struct completion *tport_unreg_cmp;
-
-	/* Stats counters - lpfc_nvmet_unsol_ls_buffer */
-	atomic_t rcv_ls_req_in;
-	atomic_t rcv_ls_req_out;
-	atomic_t rcv_ls_req_drop;
-	atomic_t xmt_ls_abort;
-	atomic_t xmt_ls_abort_cmpl;
-
-	/* Stats counters - lpfc_nvmet_xmt_ls_rsp */
-	atomic_t xmt_ls_rsp;
-	atomic_t xmt_ls_drop;
-
-	/* Stats counters - lpfc_nvmet_xmt_ls_rsp_cmp */
-	atomic_t xmt_ls_rsp_error;
-	atomic_t xmt_ls_rsp_aborted;
-	atomic_t xmt_ls_rsp_xb_set;
-	atomic_t xmt_ls_rsp_cmpl;
-
-	/* Stats counters - lpfc_nvmet_unsol_fcp_buffer */
-	atomic_t rcv_fcp_cmd_in;
-	atomic_t rcv_fcp_cmd_out;
-	atomic_t rcv_fcp_cmd_drop;
-	atomic_t rcv_fcp_cmd_defer;
-	atomic_t xmt_fcp_release;
-
-	/* Stats counters - lpfc_nvmet_xmt_fcp_op */
-	atomic_t xmt_fcp_drop;
-	atomic_t xmt_fcp_read_rsp;
-	atomic_t xmt_fcp_read;
-	atomic_t xmt_fcp_write;
-	atomic_t xmt_fcp_rsp;
-
-	/* Stats counters - lpfc_nvmet_xmt_fcp_op_cmp */
-	atomic_t xmt_fcp_rsp_xb_set;
-	atomic_t xmt_fcp_rsp_cmpl;
-	atomic_t xmt_fcp_rsp_error;
-	atomic_t xmt_fcp_rsp_aborted;
-	atomic_t xmt_fcp_rsp_drop;
-
-	/* Stats counters - lpfc_nvmet_xmt_fcp_abort */
-	atomic_t xmt_fcp_xri_abort_cqe;
-	atomic_t xmt_fcp_abort;
-	atomic_t xmt_fcp_abort_cmpl;
-	atomic_t xmt_abort_sol;
-	atomic_t xmt_abort_unsol;
-	atomic_t xmt_abort_rsp;
-	atomic_t xmt_abort_rsp_error;
-
-	/* Stats counters - defer IO */
-	atomic_t defer_ctx;
-	atomic_t defer_fod;
-	atomic_t defer_wqfull;
-};
-
-struct lpfc_nvmet_ctx_info {
-	struct list_head nvmet_ctx_list;
-	spinlock_t	nvmet_ctx_list_lock; /* lock per CPU */
-	struct lpfc_nvmet_ctx_info *nvmet_ctx_next_cpu;
-	struct lpfc_nvmet_ctx_info *nvmet_ctx_start_cpu;
-	uint16_t	nvmet_ctx_list_cnt;
-	char pad[16];  /* pad to a cache-line */
-};
-
-/* This retrieves the context info associated with the specified cpu / mrq */
-#define lpfc_get_ctx_list(phba, cpu, mrq)  \
-	(phba->sli4_hba.nvmet_ctx_info + ((cpu * phba->cfg_nvmet_mrq) + mrq))
-
-struct lpfc_nvmet_rcv_ctx {
-	union {
-		struct nvmefc_tgt_ls_req ls_req;
-		struct nvmefc_tgt_fcp_req fcp_req;
-	} ctx;
-	struct list_head list;
-	struct lpfc_hba *phba;
-	struct lpfc_iocbq *wqeq;
-	struct lpfc_iocbq *abort_wqeq;
-	spinlock_t ctxlock; /* protect flag access */
-	uint32_t sid;
-	uint32_t offset;
-	uint16_t oxid;
-	uint16_t size;
-	uint16_t entry_cnt;
-	uint16_t cpu;
-	uint16_t idx;
-	uint16_t state;
-	/* States */
-#define LPFC_NVMET_STE_LS_RCV		1
-#define LPFC_NVMET_STE_LS_ABORT		2
-#define LPFC_NVMET_STE_LS_RSP		3
-#define LPFC_NVMET_STE_RCV		4
-#define LPFC_NVMET_STE_DATA		5
-#define LPFC_NVMET_STE_ABORT		6
-#define LPFC_NVMET_STE_DONE		7
-#define LPFC_NVMET_STE_FREE		0xff
-	uint16_t flag;
-#define LPFC_NVMET_IO_INP		0x1  /* IO is in progress on exchange */
-#define LPFC_NVMET_ABORT_OP		0x2  /* Abort WQE issued on exchange */
-#define LPFC_NVMET_XBUSY		0x4  /* XB bit set on IO cmpl */
-#define LPFC_NVMET_CTX_RLS		0x8  /* ctx free requested */
-#define LPFC_NVMET_ABTS_RCV		0x10  /* ABTS received on exchange */
-#define LPFC_NVMET_CTX_REUSE_WQ		0x20  /* ctx reused via WQ */
-#define LPFC_NVMET_DEFER_WQFULL		0x40  /* Waiting on a free WQE */
-#define LPFC_NVMET_TNOTIFY		0x80  /* notify transport of abts */
-	struct rqb_dmabuf *rqb_buffer;
-	struct lpfc_nvmet_ctxbuf *ctxbuf;
-	struct lpfc_sli4_hdw_queue *hdwq;
-
-#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
-	uint64_t ts_isr_cmd;
-	uint64_t ts_cmd_nvme;
-	uint64_t ts_nvme_data;
-	uint64_t ts_data_wqput;
-	uint64_t ts_isr_data;
-	uint64_t ts_data_nvme;
-	uint64_t ts_nvme_status;
-	uint64_t ts_status_wqput;
-	uint64_t ts_isr_status;
-	uint64_t ts_status_nvme;
-#endif
-};
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index b6fb665e6ec4..9e21c4f3b009 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -39,8 +39,6 @@
 #include <asm/set_memory.h>
 #endif
 
-#include <linux/nvme-fc-driver.h>
-
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_sli.h"
@@ -50,7 +48,6 @@
 #include "lpfc.h"
 #include "lpfc_scsi.h"
 #include "lpfc_nvme.h"
-#include "lpfc_nvmet.h"
 #include "lpfc_crtn.h"
 #include "lpfc_logmsg.h"
 #include "lpfc_compat.h"
@@ -2796,6 +2793,123 @@ lpfc_sli_get_buff(struct lpfc_hba *phba,
 }
 
 /**
+ * lpfc_nvme_unsol_ls_handler - Process an unsolicited event data buffer
+ *                              containing a NVME LS request.
+ * @phba: pointer to lpfc hba data structure.
+ * @piocb: pointer to the iocbq struct representing the sequence starting
+ *        frame.
+ *
+ * This routine initially validates the NVME LS, validates there is a login
+ * with the port that sent the LS, and then calls the appropriate nvme host
+ * or target LS request handler.
+ **/
+static void
+lpfc_nvme_unsol_ls_handler(struct lpfc_hba *phba, struct lpfc_iocbq *piocb)
+{
+	struct lpfc_nodelist *ndlp;
+	struct lpfc_dmabuf *d_buf;
+	struct hbq_dmabuf *nvmebuf;
+	struct fc_frame_header *fc_hdr;
+	struct lpfc_async_xchg_ctx *axchg = NULL;
+	char *failwhy = NULL;
+	uint32_t oxid, sid, did, fctl, size;
+	int ret = 1;
+
+	d_buf = piocb->context2;
+
+	nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
+	fc_hdr = nvmebuf->hbuf.virt;
+	oxid = be16_to_cpu(fc_hdr->fh_ox_id);
+	sid = sli4_sid_from_fc_hdr(fc_hdr);
+	did = sli4_did_from_fc_hdr(fc_hdr);
+	fctl = (fc_hdr->fh_f_ctl[0] << 16 |
+		fc_hdr->fh_f_ctl[1] << 8 |
+		fc_hdr->fh_f_ctl[2]);
+	size = bf_get(lpfc_rcqe_length, &nvmebuf->cq_event.cqe.rcqe_cmpl);
+
+	lpfc_nvmeio_data(phba, "NVME LS    RCV: xri x%x sz %d from %06x\n",
+			 oxid, size, sid);
+
+	if (phba->pport->load_flag & FC_UNLOADING) {
+		failwhy = "Driver Unloading";
+	} else if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) {
+		failwhy = "NVME FC4 Disabled";
+	} else if (!phba->nvmet_support && !phba->pport->localport) {
+		failwhy = "No Localport";
+	} else if (phba->nvmet_support && !phba->targetport) {
+		failwhy = "No Targetport";
+	} else if (unlikely(fc_hdr->fh_r_ctl != FC_RCTL_ELS4_REQ)) {
+		failwhy = "Bad NVME LS R_CTL";
+	} else if (unlikely((fctl & 0x00FF0000) !=
+			(FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT))) {
+		failwhy = "Bad NVME LS F_CTL";
+	} else {
+		axchg = kzalloc(sizeof(*axchg), GFP_ATOMIC);
+		if (!axchg)
+			failwhy = "No CTX memory";
+	}
+
+	if (unlikely(failwhy)) {
+		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC | LOG_NVME_IOERR,
+				"6154 Drop NVME LS: SID %06X OXID x%X: %s\n",
+				sid, oxid, failwhy);
+		goto out_fail;
+	}
+
+	/* validate the source of the LS is logged in */
+	ndlp = lpfc_findnode_did(phba->pport, sid);
+	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
+	    ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+	     (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
+		lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
+				"6216 NVME Unsol rcv: No ndlp: "
+				"NPort_ID x%x oxid x%x\n",
+				sid, oxid);
+		goto out_fail;
+	}
+
+	axchg->phba = phba;
+	axchg->ndlp = ndlp;
+	axchg->size = size;
+	axchg->oxid = oxid;
+	axchg->sid = sid;
+	axchg->wqeq = NULL;
+	axchg->state = LPFC_NVME_STE_LS_RCV;
+	axchg->entry_cnt = 1;
+	axchg->rqb_buffer = (void *)nvmebuf;
+	axchg->hdwq = &phba->sli4_hba.hdwq[0];
+	axchg->payload = nvmebuf->dbuf.virt;
+	INIT_LIST_HEAD(&axchg->list);
+
+	if (phba->nvmet_support)
+		ret = lpfc_nvmet_handle_lsreq(phba, axchg);
+	else
+		ret = lpfc_nvme_handle_lsreq(phba, axchg);
+
+	/* if zero, LS was successfully handled. If non-zero, LS not handled */
+	if (!ret)
+		return;
+
+	lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC | LOG_NVME_IOERR,
+			"6155 Drop NVME LS from DID %06X: SID %06X OXID x%X "
+			"NVMe%s handler failed %d\n",
+			did, sid, oxid,
+			(phba->nvmet_support) ? "T" : "I", ret);
+
+out_fail:
+
+	/* recycle receive buffer */
+	lpfc_in_buf_free(phba, &nvmebuf->dbuf);
+
+	/* If start of new exchange, abort it */
+	if (axchg && (fctl & FC_FC_FIRST_SEQ && !(fctl & FC_FC_EX_CTX)))
+		ret = lpfc_nvme_unsol_ls_issue_abort(phba, axchg, sid, oxid);
+
+	if (ret)
+		kfree(axchg);
+}
+
+/**
  * lpfc_complete_unsol_iocb - Complete an unsolicited sequence
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
@@ -2816,7 +2930,7 @@ lpfc_complete_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 
 	switch (fch_type) {
 	case FC_TYPE_NVME:
-		lpfc_nvmet_unsol_ls_event(phba, pring, saveq);
+		lpfc_nvme_unsol_ls_handler(phba, saveq);
 		return 1;
 	default:
 		break;
@@ -13981,8 +14095,8 @@ lpfc_sli4_nvmet_handle_rcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
 
 		/* Just some basic sanity checks on FCP Command frame */
 		fctl = (fc_hdr->fh_f_ctl[0] << 16 |
-		fc_hdr->fh_f_ctl[1] << 8 |
-		fc_hdr->fh_f_ctl[2]);
+			fc_hdr->fh_f_ctl[1] << 8 |
+			fc_hdr->fh_f_ctl[2]);
 		if (((fctl &
 		    (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)) !=
 		    (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)) ||
@@ -19891,7 +20005,7 @@ lpfc_sli4_issue_wqe(struct lpfc_hba *phba, struct lpfc_sli4_hdw_queue *qp,
 		    struct lpfc_iocbq *pwqe)
 {
 	union lpfc_wqe128 *wqe = &pwqe->wqe;
-	struct lpfc_nvmet_rcv_ctx *ctxp;
+	struct lpfc_async_xchg_ctx *ctxp;
 	struct lpfc_queue *wq;
 	struct lpfc_sglq *sglq;
 	struct lpfc_sli_ring *pring;
author	Linus Torvalds <torvalds@linux-foundation.org>	2020-06-02 15:37:03 -0700
committer	Linus Torvalds <torvalds@linux-foundation.org>	2020-06-02 15:37:03 -0700
commit	bce159d734091fe31340976081577333f52a85e4 (patch)
tree	8396be51e6703797a60aefb4992e729f327d27c2 /drivers/scsi
parent	Merge tag 'for-5.8/block-2020-06-01' of git://git.kernel.dk/linux-block (diff)
parent	bcache: configure the asynchronous registertion to be experimental (diff)
download	wireguard-linux-bce159d734091fe31340976081577333f52a85e4.tar.xz wireguard-linux-bce159d734091fe31340976081577333f52a85e4.zip