Merge tag 'acpi-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...

[mirror_ubuntu-artful-kernel.git] / drivers / scsi / lpfc / lpfc_nvmet.c

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channsel Host Bus Adapters.                               *
 * Copyright (C) 2017 Broadcom. All Rights Reserved. The term      *
 * “Broadcom” refers to Broadcom Limited 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.                                     *
 ********************************************************************/
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <asm/unaligned.h>
#include <linux/crc-t10dif.h>
#include <net/checksum.h>

#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/fc/fc_fs.h>

#include <../drivers/nvme/host/nvme.h>
#include <linux/nvme-fc-driver.h>

#include "lpfc_version.h"
#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#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 *,
                                                 dma_addr_t rspbuf,
                                                 uint16_t rspsize);
static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *,
                                                  struct lpfc_nvmet_rcv_ctx *);
static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *,
                                          struct lpfc_nvmet_rcv_ctx *,
                                          uint32_t, uint16_t);
static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *,
                                            struct lpfc_nvmet_rcv_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);

void
lpfc_nvmet_defer_release(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp)
{
        unsigned long iflag;

        lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
                        "6313 NVMET Defer ctx release xri x%x flg x%x\n",
                        ctxp->oxid, ctxp->flag);

        spin_lock_irqsave(&phba->sli4_hba.abts_nvme_buf_list_lock, iflag);
        if (ctxp->flag & LPFC_NVMET_CTX_RLS) {
                spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock,
                                       iflag);
                return;
        }
        ctxp->flag |= LPFC_NVMET_CTX_RLS;
        list_add_tail(&ctxp->list, &phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
        spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock, iflag);
}

/**
 * lpfc_nvmet_xmt_ls_rsp_cmp - Completion handler for 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. This function is the completion handler for NVME LS commands
 * The function frees memory resources used for the NVME commands.
 **/
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;
        if (!phba->targetport)
                goto out;

        tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;

        if (status)
                atomic_inc(&tgtp->xmt_ls_rsp_error);
        else
                atomic_inc(&tgtp->xmt_ls_rsp_cmpl);

out:
        ctxp = cmdwqe->context2;
        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 %s: Entrypoint: ctx %p status %x/%x\n", __func__,
                        ctxp, status, result);

        lpfc_nlp_put(cmdwqe->context1);
        cmdwqe->context2 = NULL;
        cmdwqe->context3 = NULL;
        lpfc_sli_release_iocbq(phba, cmdwqe);
        rsp->done(rsp);
        kfree(ctxp);
}

/**
 * lpfc_nvmet_rq_post - Repost a NVMET RQ DMA buffer and clean up context
 * @phba: HBA buffer is associated with
 * @ctxp: context to clean up
 * @mp: Buffer to free
 *
 * Description: Frees the given DMA buffer in the appropriate way given by
 * reposting it to its associated RQ so it can be reused.
 *
 * Notes: Takes phba->hbalock.  Can be called with or without other locks held.
 *
 * Returns: None
 **/
void
lpfc_nvmet_rq_post(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp,
                   struct lpfc_dmabuf *mp)
{
        if (ctxp) {
                if (ctxp->flag)
                        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                                "6314 rq_post ctx xri x%x flag x%x\n",
                                ctxp->oxid, ctxp->flag);

                if (ctxp->txrdy) {
                        pci_pool_free(phba->txrdy_payload_pool, ctxp->txrdy,
                                      ctxp->txrdy_phys);
                        ctxp->txrdy = NULL;
                        ctxp->txrdy_phys = 0;
                }
                ctxp->state = LPFC_NVMET_STE_FREE;
        }
        lpfc_rq_buf_free(phba, mp);
}

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
static void
lpfc_nvmet_ktime(struct lpfc_hba *phba,
                 struct lpfc_nvmet_rcv_ctx *ctxp)
{
        uint64_t seg1, seg2, seg3, seg4, seg5;
        uint64_t seg6, seg7, seg8, seg9, seg10;

        if (!phba->ktime_on)
                return;

        if (!ctxp->ts_isr_cmd || !ctxp->ts_cmd_nvme ||
            !ctxp->ts_nvme_data || !ctxp->ts_data_wqput ||
            !ctxp->ts_isr_data || !ctxp->ts_data_nvme ||
            !ctxp->ts_nvme_status || !ctxp->ts_status_wqput ||
            !ctxp->ts_isr_status || !ctxp->ts_status_nvme)
                return;

        if (ctxp->ts_isr_cmd  > ctxp->ts_cmd_nvme)
                return;
        if (ctxp->ts_cmd_nvme > ctxp->ts_nvme_data)
                return;
        if (ctxp->ts_nvme_data > ctxp->ts_data_wqput)
                return;
        if (ctxp->ts_data_wqput > ctxp->ts_isr_data)
                return;
        if (ctxp->ts_isr_data > ctxp->ts_data_nvme)
                return;
        if (ctxp->ts_data_nvme > ctxp->ts_nvme_status)
                return;
        if (ctxp->ts_nvme_status > ctxp->ts_status_wqput)
                return;
        if (ctxp->ts_status_wqput > ctxp->ts_isr_status)
                return;
        if (ctxp->ts_isr_status > ctxp->ts_status_nvme)
                return;
        /*
         * Segment 1 - Time from FCP command received by MSI-X ISR
         * to FCP command is passed to NVME Layer.
         * Segment 2 - Time from FCP command payload handed
         * off to NVME Layer to Driver receives a Command op
         * from NVME Layer.
         * Segment 3 - Time from Driver receives a Command op
         * from NVME Layer to Command is put on WQ.
         * Segment 4 - Time from Driver WQ put is done
         * to MSI-X ISR for Command cmpl.
         * Segment 5 - Time from MSI-X ISR for Command cmpl to
         * Command cmpl is passed to NVME Layer.
         * Segment 6 - Time from Command cmpl is passed to NVME
         * Layer to Driver receives a RSP op from NVME Layer.
         * Segment 7 - Time from Driver receives a RSP op from
         * NVME Layer to WQ put is done on TRSP FCP Status.
         * Segment 8 - Time from Driver WQ put is done on TRSP
         * FCP Status to MSI-X ISR for TRSP cmpl.
         * Segment 9 - Time from MSI-X ISR for TRSP cmpl to
         * TRSP cmpl is passed to NVME Layer.
         * Segment 10 - Time from FCP command received by
         * MSI-X ISR to command is completed on wire.
         * (Segments 1 thru 8) for READDATA / WRITEDATA
         * (Segments 1 thru 4) for READDATA_RSP
         */
        seg1 = ctxp->ts_cmd_nvme - ctxp->ts_isr_cmd;
        seg2 = (ctxp->ts_nvme_data - ctxp->ts_isr_cmd) - seg1;
        seg3 = (ctxp->ts_data_wqput - ctxp->ts_isr_cmd) -
                seg1 - seg2;
        seg4 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd) -
                seg1 - seg2 - seg3;
        seg5 = (ctxp->ts_data_nvme - ctxp->ts_isr_cmd) -
                seg1 - seg2 - seg3 - seg4;

        /* For auto rsp commands seg6 thru seg10 will be 0 */
        if (ctxp->ts_nvme_status > ctxp->ts_data_nvme) {
                seg6 = (ctxp->ts_nvme_status -
                        ctxp->ts_isr_cmd) -
                        seg1 - seg2 - seg3 - seg4 - seg5;
                seg7 = (ctxp->ts_status_wqput -
                        ctxp->ts_isr_cmd) -
                        seg1 - seg2 - seg3 -
                        seg4 - seg5 - seg6;
                seg8 = (ctxp->ts_isr_status -
                        ctxp->ts_isr_cmd) -
                        seg1 - seg2 - seg3 - seg4 -
                        seg5 - seg6 - seg7;
                seg9 = (ctxp->ts_status_nvme -
                        ctxp->ts_isr_cmd) -
                        seg1 - seg2 - seg3 - seg4 -
                        seg5 - seg6 - seg7 - seg8;
                seg10 = (ctxp->ts_isr_status -
                        ctxp->ts_isr_cmd);
        } else {
                seg6 =  0;
                seg7 =  0;
                seg8 =  0;
                seg9 =  0;
                seg10 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd);
        }

        phba->ktime_seg1_total += seg1;
        if (seg1 < phba->ktime_seg1_min)
                phba->ktime_seg1_min = seg1;
        else if (seg1 > phba->ktime_seg1_max)
                phba->ktime_seg1_max = seg1;

        phba->ktime_seg2_total += seg2;
        if (seg2 < phba->ktime_seg2_min)
                phba->ktime_seg2_min = seg2;
        else if (seg2 > phba->ktime_seg2_max)
                phba->ktime_seg2_max = seg2;

        phba->ktime_seg3_total += seg3;
        if (seg3 < phba->ktime_seg3_min)
                phba->ktime_seg3_min = seg3;
        else if (seg3 > phba->ktime_seg3_max)
                phba->ktime_seg3_max = seg3;

        phba->ktime_seg4_total += seg4;
        if (seg4 < phba->ktime_seg4_min)
                phba->ktime_seg4_min = seg4;
        else if (seg4 > phba->ktime_seg4_max)
                phba->ktime_seg4_max = seg4;

        phba->ktime_seg5_total += seg5;
        if (seg5 < phba->ktime_seg5_min)
                phba->ktime_seg5_min = seg5;
        else if (seg5 > phba->ktime_seg5_max)
                phba->ktime_seg5_max = seg5;

        phba->ktime_data_samples++;
        if (!seg6)
                goto out;

        phba->ktime_seg6_total += seg6;
        if (seg6 < phba->ktime_seg6_min)
                phba->ktime_seg6_min = seg6;
        else if (seg6 > phba->ktime_seg6_max)
                phba->ktime_seg6_max = seg6;

        phba->ktime_seg7_total += seg7;
        if (seg7 < phba->ktime_seg7_min)
                phba->ktime_seg7_min = seg7;
        else if (seg7 > phba->ktime_seg7_max)
                phba->ktime_seg7_max = seg7;

        phba->ktime_seg8_total += seg8;
        if (seg8 < phba->ktime_seg8_min)
                phba->ktime_seg8_min = seg8;
        else if (seg8 > phba->ktime_seg8_max)
                phba->ktime_seg8_max = seg8;

        phba->ktime_seg9_total += seg9;
        if (seg9 < phba->ktime_seg9_min)
                phba->ktime_seg9_min = seg9;
        else if (seg9 > phba->ktime_seg9_max)
                phba->ktime_seg9_max = seg9;
out:
        phba->ktime_seg10_total += seg10;
        if (seg10 < phba->ktime_seg10_min)
                phba->ktime_seg10_min = seg10;
        else if (seg10 > phba->ktime_seg10_max)
                phba->ktime_seg10_max = seg10;
        phba->ktime_status_samples++;
}
#endif

/**
 * lpfc_nvmet_xmt_fcp_op_cmp - Completion handler for FCP 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. This function is the completion handler for NVME FCP commands
 * The function frees memory resources used for the NVME commands.
 **/
static void
lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
                          struct lpfc_wcqe_complete *wcqe)
{
        struct lpfc_nvmet_tgtport *tgtp;
        struct nvmefc_tgt_fcp_req *rsp;
        struct lpfc_nvmet_rcv_ctx *ctxp;
        uint32_t status, result, op, start_clean;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
        uint32_t id;
#endif

        ctxp = cmdwqe->context2;
        ctxp->flag &= ~LPFC_NVMET_IO_INP;

        rsp = &ctxp->ctx.fcp_req;
        op = rsp->op;

        status = bf_get(lpfc_wcqe_c_status, wcqe);
        result = wcqe->parameter;

        if (phba->targetport)
                tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
        else
                tgtp = NULL;

        lpfc_nvmeio_data(phba, "NVMET FCP CMPL: xri x%x op x%x status x%x\n",
                         ctxp->oxid, op, status);

        if (status) {
                rsp->fcp_error = NVME_SC_DATA_XFER_ERROR;
                rsp->transferred_length = 0;
                if (tgtp)
                        atomic_inc(&tgtp->xmt_fcp_rsp_error);

                /* pick up SLI4 exhange busy condition */
                if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
                        ctxp->flag |= LPFC_NVMET_XBUSY;

                        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                                        "6315 IO Cmpl XBUSY: xri x%x: %x/%x\n",
                                        ctxp->oxid, status, result);
                } else {
                        ctxp->flag &= ~LPFC_NVMET_XBUSY;
                }

        } else {
                rsp->fcp_error = NVME_SC_SUCCESS;
                if (op == NVMET_FCOP_RSP)
                        rsp->transferred_length = rsp->rsplen;
                else
                        rsp->transferred_length = rsp->transfer_length;
                if (tgtp)
                        atomic_inc(&tgtp->xmt_fcp_rsp_cmpl);
        }

        if ((op == NVMET_FCOP_READDATA_RSP) ||
            (op == NVMET_FCOP_RSP)) {
                /* Sanity check */
                ctxp->state = LPFC_NVMET_STE_DONE;
                ctxp->entry_cnt++;

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
                if (phba->ktime_on) {
                        if (rsp->op == NVMET_FCOP_READDATA_RSP) {
                                ctxp->ts_isr_data =
                                        cmdwqe->isr_timestamp;
                                ctxp->ts_data_nvme =
                                        ktime_get_ns();
                                ctxp->ts_nvme_status =
                                        ctxp->ts_data_nvme;
                                ctxp->ts_status_wqput =
                                        ctxp->ts_data_nvme;
                                ctxp->ts_isr_status =
                                        ctxp->ts_data_nvme;
                                ctxp->ts_status_nvme =
                                        ctxp->ts_data_nvme;
                        } else {
                                ctxp->ts_isr_status =
                                        cmdwqe->isr_timestamp;
                                ctxp->ts_status_nvme =
                                        ktime_get_ns();
                        }
                }
                if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) {
                        id = smp_processor_id();
                        if (ctxp->cpu != id)
                                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                                "6703 CPU Check cmpl: "
                                                "cpu %d expect %d\n",
                                                id, ctxp->cpu);
                        if (ctxp->cpu < LPFC_CHECK_CPU_CNT)
                                phba->cpucheck_cmpl_io[id]++;
                }
#endif
                rsp->done(rsp);
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
                if (phba->ktime_on)
                        lpfc_nvmet_ktime(phba, ctxp);
#endif
                /* lpfc_nvmet_xmt_fcp_release() will recycle the context */
        } else {
                ctxp->entry_cnt++;
                start_clean = offsetof(struct lpfc_iocbq, wqe);
                memset(((char *)cmdwqe) + start_clean, 0,
                       (sizeof(struct lpfc_iocbq) - start_clean));
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
                if (phba->ktime_on) {
                        ctxp->ts_isr_data = cmdwqe->isr_timestamp;
                        ctxp->ts_data_nvme = ktime_get_ns();
                }
                if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) {
                        id = smp_processor_id();
                        if (ctxp->cpu != id)
                                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                                "6704 CPU Check cmdcmpl: "
                                                "cpu %d expect %d\n",
                                                id, ctxp->cpu);
                        if (ctxp->cpu < LPFC_CHECK_CPU_CNT)
                                phba->cpucheck_ccmpl_io[id]++;
                }
#endif
                rsp->done(rsp);
        }
}

static int
lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport,
                      struct nvmefc_tgt_ls_req *rsp)
{
        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_iocbq *nvmewqeq;
        struct lpfc_nvmet_tgtport *nvmep = tgtport->private;
        struct lpfc_dmabuf dmabuf;
        struct ulp_bde64 bpl;
        int rc;

        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
                        "6023 %s: Entrypoint ctx %p %p\n", __func__,
                        ctxp, tgtport);

        nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, ctxp, rsp->rspdma,
                                      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);
                lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp,
                                                ctxp->sid, ctxp->oxid);
                return -ENOMEM;
        }

        /* Save numBdes for bpl2sgl */
        nvmewqeq->rsvd2 = 1;
        nvmewqeq->hba_wqidx = 0;
        nvmewqeq->context3 = &dmabuf;
        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.bdeFlags = 0;
        bpl.tus.w = le32_to_cpu(bpl.tus.w);

        nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_rsp_cmp;
        nvmewqeq->iocb_cmpl = NULL;
        nvmewqeq->context2 = ctxp;

        lpfc_nvmeio_data(phba, "NVMET LS  RESP: xri x%x wqidx x%x len x%x\n",
                         ctxp->oxid, nvmewqeq->hba_wqidx, rsp->rsplen);

        rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, 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);
                ctxp->rqb_buffer = 0;
                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_nlp_put(nvmewqeq->context1);

        lpfc_in_buf_free(phba, &nvmebuf->dbuf);
        lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid);
        return -ENXIO;
}

static int
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_hba *phba = ctxp->phba;
        struct lpfc_iocbq *nvmewqeq;
        int rc;

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
        if (phba->ktime_on) {
                if (rsp->op == NVMET_FCOP_RSP)
                        ctxp->ts_nvme_status = ktime_get_ns();
                else
                        ctxp->ts_nvme_data = ktime_get_ns();
        }
        if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) {
                int id = smp_processor_id();
                ctxp->cpu = id;
                if (id < LPFC_CHECK_CPU_CNT)
                        phba->cpucheck_xmt_io[id]++;
                if (rsp->hwqid != id) {
                        lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                        "6705 CPU Check OP: "
                                        "cpu %d expect %d\n",
                                        id, rsp->hwqid);
                        ctxp->cpu = rsp->hwqid;
                }
        }
#endif

        /* Sanity check */
        if ((ctxp->flag & LPFC_NVMET_ABTS_RCV) ||
            (ctxp->state == LPFC_NVMET_STE_ABORT)) {
                atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                "6102 IO xri x%x aborted\n",
                                ctxp->oxid);
                rc = -ENXIO;
                goto aerr;
        }

        nvmewqeq = lpfc_nvmet_prep_fcp_wqe(phba, ctxp);
        if (nvmewqeq == NULL) {
                atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                "6152 FCP Drop IO x%x: Prep\n",
                                ctxp->oxid);
                rc = -ENXIO;
                goto aerr;
        }

        nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_fcp_op_cmp;
        nvmewqeq->iocb_cmpl = NULL;
        nvmewqeq->context2 = ctxp;
        nvmewqeq->iocb_flag |=  LPFC_IO_NVMET;
        ctxp->wqeq->hba_wqidx = rsp->hwqid;

        lpfc_nvmeio_data(phba, "NVMET FCP CMND: xri x%x op x%x len x%x\n",
                         ctxp->oxid, rsp->op, rsp->rsplen);

        rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, nvmewqeq);
        if (rc == WQE_SUCCESS) {
                ctxp->flag |= LPFC_NVMET_IO_INP;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
                if (!phba->ktime_on)
                        return 0;
                if (rsp->op == NVMET_FCOP_RSP)
                        ctxp->ts_status_wqput = ktime_get_ns();
                else
                        ctxp->ts_data_wqput = ktime_get_ns();
#endif
                return 0;
        }

        /* Give back resources */
        atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
        lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                        "6153 FCP Drop IO x%x: Issue: %d\n",
                        ctxp->oxid, rc);

        ctxp->wqeq->hba_wqidx = 0;
        nvmewqeq->context2 = NULL;
        nvmewqeq->context3 = NULL;
        rc = -EBUSY;
aerr:
        return rc;
}

static void
lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport)
{
        struct lpfc_nvmet_tgtport *tport = targetport->private;

        /* release any threads waiting for the unreg to complete */
        complete(&tport->tport_unreg_done);
}

static void
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_hba *phba = ctxp->phba;
        unsigned long flags;

        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                        "6103 Abort op: oxri x%x flg x%x cnt %d\n",
                        ctxp->oxid, ctxp->flag, ctxp->entry_cnt);

        lpfc_nvmeio_data(phba, "NVMET FCP ABRT: "
                         "xri x%x flg x%x cnt x%x\n",
                         ctxp->oxid, ctxp->flag, ctxp->entry_cnt);

        atomic_inc(&lpfc_nvmep->xmt_fcp_abort);
        ctxp->entry_cnt++;
        spin_lock_irqsave(&ctxp->ctxlock, flags);

        /* 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) {
                spin_unlock_irqrestore(&ctxp->ctxlock, flags);
                return;
        }
        ctxp->flag |= LPFC_NVMET_ABORT_OP;
        if (ctxp->flag & LPFC_NVMET_IO_INP)
                lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid,
                                               ctxp->oxid);
        else
                lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
                                                 ctxp->oxid);
        spin_unlock_irqrestore(&ctxp->ctxlock, flags);
}

static void
lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport,
                           struct nvmefc_tgt_fcp_req *rsp)
{
        struct lpfc_nvmet_rcv_ctx *ctxp =
                container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.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_ABORT_OP) ||
            (ctxp->flag & LPFC_NVMET_XBUSY)) {
                aborting = true;
                /* let the abort path do the real release */
                lpfc_nvmet_defer_release(phba, ctxp);
        }
        spin_unlock_irqrestore(&ctxp->ctxlock, flags);

        lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d\n", ctxp->oxid,
                         ctxp->state, 0);

        if (aborting)
                return;

        lpfc_nvmet_rq_post(phba, ctxp, &ctxp->rqb_buffer->hbuf);
}

static struct nvmet_fc_target_template lpfc_tgttemplate = {
        .targetport_delete = lpfc_nvmet_targetport_delete,
        .xmt_ls_rsp     = lpfc_nvmet_xmt_ls_rsp,
        .fcp_op         = lpfc_nvmet_xmt_fcp_op,
        .fcp_abort      = lpfc_nvmet_xmt_fcp_abort,
        .fcp_req_release = lpfc_nvmet_xmt_fcp_release,

        .max_hw_queues  = 1,
        .max_sgl_segments = LPFC_NVMET_DEFAULT_SEGS,
        .max_dif_sgl_segments = LPFC_NVMET_DEFAULT_SEGS,
        .dma_boundary = 0xFFFFFFFF,

        /* optional features */
        .target_features = 0,
        /* sizes of additional private data for data structures */
        .target_priv_sz = sizeof(struct lpfc_nvmet_tgtport),
};

int
lpfc_nvmet_create_targetport(struct lpfc_hba *phba)
{
        struct lpfc_vport  *vport = phba->pport;
        struct lpfc_nvmet_tgtport *tgtp;
        struct nvmet_fc_port_info pinfo;
        int error = 0;

        if (phba->targetport)
                return 0;

        memset(&pinfo, 0, sizeof(struct nvmet_fc_port_info));
        pinfo.node_name = wwn_to_u64(vport->fc_nodename.u.wwn);
        pinfo.port_name = wwn_to_u64(vport->fc_portname.u.wwn);
        pinfo.port_id = vport->fc_myDID;

        /* Limit to LPFC_MAX_NVME_SEG_CNT.
         * For now need + 1 to get around NVME transport logic.
         */
        if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {
                lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
                                "6400 Reducing sg segment cnt to %d\n",
                                LPFC_MAX_NVME_SEG_CNT);
                phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
        } else {
                phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;
        }
        lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1;
        lpfc_tgttemplate.max_hw_queues = phba->cfg_nvme_io_channel;
        lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP |
                                           NVMET_FCTGTFEAT_NEEDS_CMD_CPUSCHED |
                                           NVMET_FCTGTFEAT_CMD_IN_ISR |
                                           NVMET_FCTGTFEAT_OPDONE_IN_ISR;

#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
        error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate,
                                             &phba->pcidev->dev,
                                             &phba->targetport);
#else
        error = -ENOMEM;
#endif
        if (error) {
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
                                "6025 Cannot register NVME targetport "
                                "x%x\n", error);
                phba->targetport = NULL;
        } else {
                tgtp = (struct lpfc_nvmet_tgtport *)
                        phba->targetport->private;
                tgtp->phba = phba;

                lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
                                "6026 Registered NVME "
                                "targetport: %p, private %p "
                                "portnm %llx nodenm %llx\n",
                                phba->targetport, tgtp,
                                pinfo.port_name, pinfo.node_name);

                atomic_set(&tgtp->rcv_ls_req_in, 0);
                atomic_set(&tgtp->rcv_ls_req_out, 0);
                atomic_set(&tgtp->rcv_ls_req_drop, 0);
                atomic_set(&tgtp->xmt_ls_abort, 0);
                atomic_set(&tgtp->xmt_ls_rsp, 0);
                atomic_set(&tgtp->xmt_ls_drop, 0);
                atomic_set(&tgtp->xmt_ls_rsp_error, 0);
                atomic_set(&tgtp->xmt_ls_rsp_cmpl, 0);
                atomic_set(&tgtp->rcv_fcp_cmd_in, 0);
                atomic_set(&tgtp->rcv_fcp_cmd_out, 0);
                atomic_set(&tgtp->rcv_fcp_cmd_drop, 0);
                atomic_set(&tgtp->xmt_fcp_abort, 0);
                atomic_set(&tgtp->xmt_fcp_drop, 0);
                atomic_set(&tgtp->xmt_fcp_read_rsp, 0);
                atomic_set(&tgtp->xmt_fcp_read, 0);
                atomic_set(&tgtp->xmt_fcp_write, 0);
                atomic_set(&tgtp->xmt_fcp_rsp, 0);
                atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0);
                atomic_set(&tgtp->xmt_fcp_rsp_error, 0);
                atomic_set(&tgtp->xmt_fcp_rsp_drop, 0);
                atomic_set(&tgtp->xmt_abort_rsp, 0);
                atomic_set(&tgtp->xmt_abort_rsp_error, 0);
                atomic_set(&tgtp->xmt_abort_cmpl, 0);
        }
        return error;
}

int
lpfc_nvmet_update_targetport(struct lpfc_hba *phba)
{
        struct lpfc_vport  *vport = phba->pport;

        if (!phba->targetport)
                return 0;

        lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
                         "6007 Update NVMET port %p did x%x\n",
                         phba->targetport, vport->fc_myDID);

        phba->targetport->port_id = vport->fc_myDID;
        return 0;
}

/**
 * lpfc_sli4_nvmet_xri_aborted - Fast-path process of nvmet xri abort
 * @phba: pointer to lpfc hba data structure.
 * @axri: pointer to the nvmet xri abort wcqe structure.
 *
 * This routine is invoked by the worker thread to process a SLI4 fast-path
 * NVMET aborted xri.
 **/
void
lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba,
                            struct sli4_wcqe_xri_aborted *axri)
{
        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_nodelist *ndlp;
        unsigned long iflag = 0;
        int rrq_empty = 0;
        bool released = false;

        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                        "6317 XB aborted xri x%x rxid x%x\n", xri, rxid);

        if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
                return;
        spin_lock_irqsave(&phba->hbalock, iflag);
        spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock);
        list_for_each_entry_safe(ctxp, next_ctxp,
                                 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
                                 list) {
                if (ctxp->rqb_buffer->sglq->sli4_xritag != xri)
                        continue;

                /* 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)) {
                        list_del(&ctxp->list);
                        released = true;
                }
                ctxp->flag &= ~LPFC_NVMET_XBUSY;
                spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);

                rrq_empty = list_empty(&phba->active_rrq_list);
                spin_unlock_irqrestore(&phba->hbalock, iflag);
                ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
                if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
                    (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
                     ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
                        lpfc_set_rrq_active(phba, ndlp,
                                ctxp->rqb_buffer->sglq->sli4_lxritag,
                                rxid, 1);
                        lpfc_sli4_abts_err_handler(phba, ndlp, axri);
                }

                lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                                "6318 XB aborted %x flg x%x (%x)\n",
                                ctxp->oxid, ctxp->flag, released);
                if (released)
                        lpfc_nvmet_rq_post(phba, ctxp,
                                           &ctxp->rqb_buffer->hbuf);
                if (rrq_empty)
                        lpfc_worker_wake_up(phba);
                return;
        }
        spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
        spin_unlock_irqrestore(&phba->hbalock, iflag);
}

int
lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport,
                           struct fc_frame_header *fc_hdr)

{
#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
        struct lpfc_hba *phba = vport->phba;
        struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp;
        struct nvmefc_tgt_fcp_req *rsp;
        uint16_t xri;
        unsigned long iflag = 0;

        xri = be16_to_cpu(fc_hdr->fh_ox_id);

        spin_lock_irqsave(&phba->hbalock, iflag);
        spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock);
        list_for_each_entry_safe(ctxp, next_ctxp,
                                 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
                                 list) {
                if (ctxp->rqb_buffer->sglq->sli4_xritag != xri)
                        continue;

                spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
                spin_unlock_irqrestore(&phba->hbalock, iflag);

                spin_lock_irqsave(&ctxp->ctxlock, iflag);
                ctxp->flag |= LPFC_NVMET_ABTS_RCV;
                spin_unlock_irqrestore(&ctxp->ctxlock, iflag);

                lpfc_nvmeio_data(phba,
                        "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
                        xri, smp_processor_id(), 0);

                lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                                "6319 NVMET Rcv ABTS:acc xri x%x\n", xri);

                rsp = &ctxp->ctx.fcp_req;
                nvmet_fc_rcv_fcp_abort(phba->targetport, rsp);

                /* Respond with BA_ACC accordingly */
                lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1);
                return 0;
        }
        spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
        spin_unlock_irqrestore(&phba->hbalock, iflag);

        lpfc_nvmeio_data(phba, "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
                         xri, smp_processor_id(), 1);

        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                        "6320 NVMET Rcv ABTS:rjt xri x%x\n", xri);

        /* Respond with BA_RJT accordingly */
        lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 0);
#endif
        return 0;
}

void
lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba)
{
#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
        struct lpfc_nvmet_tgtport *tgtp;

        if (phba->nvmet_support == 0)
                return;
        if (phba->targetport) {
                tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
                init_completion(&tgtp->tport_unreg_done);
                nvmet_fc_unregister_targetport(phba->targetport);
                wait_for_completion_timeout(&tgtp->tport_unreg_done, 5);
        }
        phba->targetport = NULL;
#endif
}

/**
 * lpfc_nvmet_unsol_ls_buffer - Process an unsolicited event data buffer
 * @phba: pointer to lpfc hba data structure.
 * @pring: pointer to a SLI ring.
 * @nvmebuf: pointer to lpfc nvme command HBQ data structure.
 *
 * 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)
{
#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;
                goto dropit;
        }

        tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
        payload = (uint32_t *)(nvmebuf->dbuf.virt);
        fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
        size = bf_get(lpfc_rcqe_length,  &nvmebuf->cq_event.cqe.rcqe_cmpl);
        oxid = be16_to_cpu(fc_hdr->fh_ox_id);
        sid = sli4_sid_from_fc_hdr(fc_hdr);

        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);
                if (nvmebuf)
                        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_RCV;
        ctxp->rqb_buffer = (void *)nvmebuf;

        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.
         */
        atomic_inc(&tgtp->rcv_ls_req_in);
        rc = nvmet_fc_rcv_ls_req(phba->targetport, &ctxp->ctx.ls_req,
                                 payload, size);

        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
                        "6037 %s: ctx %p sz %d rc %d: %08x %08x %08x "
                        "%08x %08x %08x\n", __func__, ctxp, size, rc,
                        *payload, *(payload+1), *(payload+2),
                        *(payload+3), *(payload+4), *(payload+5));

        if (rc == 0) {
                atomic_inc(&tgtp->rcv_ls_req_out);
                return;
        }

        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 */
        if (nvmebuf)
                lpfc_in_buf_free(phba, &nvmebuf->dbuf);

        atomic_inc(&tgtp->xmt_ls_abort);
        lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, sid, oxid);
#endif
}

/**
 * lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer
 * @phba: pointer to lpfc hba data structure.
 * @pring: pointer to a SLI ring.
 * @nvmebuf: pointer to lpfc nvme command HBQ data structure.
 *
 * 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_fcp_buffer(struct lpfc_hba *phba,
                            struct lpfc_sli_ring *pring,
                            struct rqb_dmabuf *nvmebuf,
                            uint64_t isr_timestamp)
{
#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
        struct lpfc_nvmet_rcv_ctx *ctxp;
        struct lpfc_nvmet_tgtport *tgtp;
        struct fc_frame_header *fc_hdr;
        uint32_t *payload;
        uint32_t size, oxid, sid, rc;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
        uint32_t id;
#endif

        if (!nvmebuf || !phba->targetport) {
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                "6157 FCP Drop IO\n");
                oxid = 0;
                size = 0;
                sid = 0;
                goto dropit;
        }


        tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
        payload = (uint32_t *)(nvmebuf->dbuf.virt);
        fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
        size = nvmebuf->bytes_recv;
        oxid = be16_to_cpu(fc_hdr->fh_ox_id);
        sid = sli4_sid_from_fc_hdr(fc_hdr);

        ctxp = (struct lpfc_nvmet_rcv_ctx *)nvmebuf->context;
        if (ctxp == NULL) {
                atomic_inc(&tgtp->rcv_fcp_cmd_drop);
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                "6158 FCP Drop IO x%x: Alloc\n",
                                oxid);
                lpfc_nvmet_rq_post(phba, NULL, &nvmebuf->hbuf);
                /* Cannot send ABTS without context */
                return;
        }
        memset(ctxp, 0, sizeof(ctxp->ctx));
        ctxp->wqeq = NULL;
        ctxp->txrdy = NULL;
        ctxp->offset = 0;
        ctxp->phba = phba;
        ctxp->size = size;
        ctxp->oxid = oxid;
        ctxp->sid = sid;
        ctxp->state = LPFC_NVMET_STE_RCV;
        ctxp->rqb_buffer = nvmebuf;
        ctxp->entry_cnt = 1;
        ctxp->flag = 0;
        spin_lock_init(&ctxp->ctxlock);

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
        if (phba->ktime_on) {
                ctxp->ts_isr_cmd = isr_timestamp;
                ctxp->ts_cmd_nvme = ktime_get_ns();
                ctxp->ts_nvme_data = 0;
                ctxp->ts_data_wqput = 0;
                ctxp->ts_isr_data = 0;
                ctxp->ts_data_nvme = 0;
                ctxp->ts_nvme_status = 0;
                ctxp->ts_status_wqput = 0;
                ctxp->ts_isr_status = 0;
                ctxp->ts_status_nvme = 0;
        }

        if (phba->cpucheck_on & LPFC_CHECK_NVMET_RCV) {
                id = smp_processor_id();
                if (id < LPFC_CHECK_CPU_CNT)
                        phba->cpucheck_rcv_io[id]++;
        }
#endif

        lpfc_nvmeio_data(phba, "NVMET FCP  RCV: xri x%x sz %d CPU %02x\n",
                         oxid, size, smp_processor_id());

        atomic_inc(&tgtp->rcv_fcp_cmd_in);
        /*
         * The calling sequence should be:
         * nvmet_fc_rcv_fcp_req -> lpfc_nvmet_xmt_fcp_op/cmp -> req->done
         * lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp.
         */
        rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->ctx.fcp_req,
                                  payload, size);

        /* Process FCP command */
        if (rc == 0) {
                atomic_inc(&tgtp->rcv_fcp_cmd_out);
                return;
        }

        atomic_inc(&tgtp->rcv_fcp_cmd_drop);
        lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                        "6159 FCP Drop IO x%x: err x%x\n",
                        ctxp->oxid, rc);
dropit:
        lpfc_nvmeio_data(phba, "NVMET FCP DROP: xri x%x sz %d from %06x\n",
                         oxid, size, sid);
        if (oxid) {
                lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid);
                return;
        }

        if (nvmebuf) {
                nvmebuf->iocbq->hba_wqidx = 0;
                /* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */
                lpfc_nvmet_rq_post(phba, NULL, &nvmebuf->hbuf);
        }
#endif
}

/**
 * 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 (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.
 * @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_fcp_buffer() after properly set up the buffer from the
 * SLI RQ on which the unsolicited event was received.
 **/
void
lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba,
                           struct lpfc_sli_ring *pring,
                           struct rqb_dmabuf *nvmebuf,
                           uint64_t isr_timestamp)
{
        if (phba->nvmet_support == 0) {
                lpfc_nvmet_rq_post(phba, NULL, &nvmebuf->hbuf);
                return;
        }
        lpfc_nvmet_unsol_fcp_buffer(phba, pring, nvmebuf,
                                    isr_timestamp);
}

/**
 * lpfc_nvmet_prep_ls_wqe - Allocate and prepare a lpfc wqe data structure
 * @phba: pointer to a host N_Port data structure.
 * @ctxp: Context info for NVME LS Request
 * @rspbuf: DMA buffer of NVME command.
 * @rspsize: size of the NVME command.
 *
 * This routine is used for allocating a lpfc-WQE data structure from
 * the driver lpfc-WQE free-list and prepare the WQE with the parameters
 * passed into the routine for discovery state machine to issue an Extended
 * Link Service (NVME) commands. It is a generic lpfc-WQE allocation
 * and preparation routine that is used by all the discovery state machine
 * routines and the NVME command-specific fields will be later set up by
 * the individual discovery machine routines after calling this routine
 * allocating and preparing a generic WQE data structure. It fills in the
 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
 * payload and response payload (if expected). The reference count on the
 * ndlp is incremented by 1 and the reference to the ndlp is put into
 * context1 of the WQE data structure for this WQE to hold the ndlp
 * reference for the command's callback function to access later.
 *
 * Return code
 *   Pointer to the newly allocated/prepared nvme wqe data structure
 *   NULL - when nvme wqe data structure allocation/preparation failed
 **/
static struct lpfc_iocbq *
lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba,
                       struct lpfc_nvmet_rcv_ctx *ctxp,
                       dma_addr_t rspbuf, uint16_t rspsize)
{
        struct lpfc_nodelist *ndlp;
        struct lpfc_iocbq *nvmewqe;
        union lpfc_wqe *wqe;

        if (!lpfc_is_link_up(phba)) {
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
                                "6104 lpfc_nvmet_prep_ls_wqe: link err: "
                                "NPORT x%x oxid:x%x\n",
                                ctxp->sid, ctxp->oxid);
                return NULL;
        }

        /* Allocate buffer for  command wqe */
        nvmewqe = lpfc_sli_get_iocbq(phba);
        if (nvmewqe == NULL) {
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
                                "6105 lpfc_nvmet_prep_ls_wqe: No WQE: "
                                "NPORT x%x oxid:x%x\n",
                                ctxp->sid, ctxp->oxid);
                return NULL;
        }

        ndlp = lpfc_findnode_did(phba->pport, ctxp->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,
                                "6106 lpfc_nvmet_prep_ls_wqe: No ndlp: "
                                "NPORT x%x oxid:x%x\n",
                                ctxp->sid, ctxp->oxid);
                goto nvme_wqe_free_wqeq_exit;
        }
        ctxp->wqeq = nvmewqe;

        /* prevent preparing wqe with NULL ndlp reference */
        nvmewqe->context1 = lpfc_nlp_get(ndlp);
        if (nvmewqe->context1 == NULL)
                goto nvme_wqe_free_wqeq_exit;
        nvmewqe->context2 = ctxp;

        wqe = &nvmewqe->wqe;
        memset(wqe, 0, sizeof(union lpfc_wqe));

        /* Words 0 - 2 */
        wqe->xmit_sequence.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
        wqe->xmit_sequence.bde.tus.f.bdeSize = rspsize;
        wqe->xmit_sequence.bde.addrLow = le32_to_cpu(putPaddrLow(rspbuf));
        wqe->xmit_sequence.bde.addrHigh = le32_to_cpu(putPaddrHigh(rspbuf));

        /* Word 3 */

        /* Word 4 */

        /* Word 5 */
        bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0);
        bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, 1);
        bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 0);
        bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, FC_RCTL_ELS4_REP);
        bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_NVME);

        /* Word 6 */
        bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com,
               phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
        bf_set(wqe_xri_tag, &wqe->xmit_sequence.wqe_com, nvmewqe->sli4_xritag);

        /* Word 7 */
        bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com,
               CMD_XMIT_SEQUENCE64_WQE);
        bf_set(wqe_ct, &wqe->xmit_sequence.wqe_com, SLI4_CT_RPI);
        bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3);
        bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0);

        /* Word 8 */
        wqe->xmit_sequence.wqe_com.abort_tag = nvmewqe->iotag;

        /* Word 9 */
        bf_set(wqe_reqtag, &wqe->xmit_sequence.wqe_com, nvmewqe->iotag);
        /* Needs to be set by caller */
        bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ctxp->oxid);

        /* Word 10 */
        bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1);
        bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE);
        bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com,
               LPFC_WQE_LENLOC_WORD12);
        bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0);

        /* Word 11 */
        bf_set(wqe_cqid, &wqe->xmit_sequence.wqe_com,
               LPFC_WQE_CQ_ID_DEFAULT);
        bf_set(wqe_cmd_type, &wqe->xmit_sequence.wqe_com,
               OTHER_COMMAND);

        /* Word 12 */
        wqe->xmit_sequence.xmit_len = rspsize;

        nvmewqe->retry = 1;
        nvmewqe->vport = phba->pport;
        nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT;
        nvmewqe->iocb_flag |= LPFC_IO_NVME_LS;

        /* Xmit NVME response to remote NPORT <did> */
        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
                        "6039 Xmit NVME LS response to remote "
                        "NPORT x%x iotag:x%x oxid:x%x size:x%x\n",
                        ndlp->nlp_DID, nvmewqe->iotag, ctxp->oxid,
                        rspsize);
        return nvmewqe;

nvme_wqe_free_wqeq_exit:
        nvmewqe->context2 = NULL;
        nvmewqe->context3 = NULL;
        lpfc_sli_release_iocbq(phba, nvmewqe);
        return NULL;
}


static struct lpfc_iocbq *
lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
                        struct lpfc_nvmet_rcv_ctx *ctxp)
{
        struct nvmefc_tgt_fcp_req *rsp = &ctxp->ctx.fcp_req;
        struct lpfc_nvmet_tgtport *tgtp;
        struct sli4_sge *sgl;
        struct lpfc_nodelist *ndlp;
        struct lpfc_iocbq *nvmewqe;
        struct scatterlist *sgel;
        union lpfc_wqe128 *wqe;
        uint32_t *txrdy;
        dma_addr_t physaddr;
        int i, cnt;
        int xc = 1;

        if (!lpfc_is_link_up(phba)) {
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                "6107 lpfc_nvmet_prep_fcp_wqe: link err:"
                                "NPORT x%x oxid:x%x\n", ctxp->sid,
                                ctxp->oxid);
                return NULL;
        }

        ndlp = lpfc_findnode_did(phba->pport, ctxp->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_IOERR,
                                "6108 lpfc_nvmet_prep_fcp_wqe: no ndlp: "
                                "NPORT x%x oxid:x%x\n",
                                ctxp->sid, ctxp->oxid);
                return NULL;
        }

        if (rsp->sg_cnt > phba->cfg_nvme_seg_cnt) {
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                "6109 lpfc_nvmet_prep_fcp_wqe: seg cnt err: "
                                "NPORT x%x oxid:x%x cnt %d\n",
                                ctxp->sid, ctxp->oxid, phba->cfg_nvme_seg_cnt);
                return NULL;
        }

        tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
        nvmewqe = ctxp->wqeq;
        if (nvmewqe == NULL) {
                /* Allocate buffer for  command wqe */
                nvmewqe = ctxp->rqb_buffer->iocbq;
                if (nvmewqe == NULL) {
                        lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                        "6110 lpfc_nvmet_prep_fcp_wqe: No "
                                        "WQE: NPORT x%x oxid:x%x\n",
                                        ctxp->sid, ctxp->oxid);
                        return NULL;
                }
                ctxp->wqeq = nvmewqe;
                xc = 0; /* create new XRI */
                nvmewqe->sli4_lxritag = NO_XRI;
                nvmewqe->sli4_xritag = NO_XRI;
        }

        /* Sanity check */
        if (((ctxp->state == LPFC_NVMET_STE_RCV) &&
            (ctxp->entry_cnt == 1)) ||
            ((ctxp->state == LPFC_NVMET_STE_DATA) &&
            (ctxp->entry_cnt > 1))) {
                wqe = (union lpfc_wqe128 *)&nvmewqe->wqe;
        } else {
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                "6111 Wrong state %s: %d  cnt %d\n",
                                __func__, ctxp->state, ctxp->entry_cnt);
                return NULL;
        }

        sgl  = (struct sli4_sge *)ctxp->rqb_buffer->sglq->sgl;
        switch (rsp->op) {
        case NVMET_FCOP_READDATA:
        case NVMET_FCOP_READDATA_RSP:
                /* Words 0 - 2 : The first sg segment */
                sgel = &rsp->sg[0];
                physaddr = sg_dma_address(sgel);
                wqe->fcp_tsend.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
                wqe->fcp_tsend.bde.tus.f.bdeSize = sg_dma_len(sgel);
                wqe->fcp_tsend.bde.addrLow = cpu_to_le32(putPaddrLow(physaddr));
                wqe->fcp_tsend.bde.addrHigh =
                        cpu_to_le32(putPaddrHigh(physaddr));

                /* Word 3 */
                wqe->fcp_tsend.payload_offset_len = 0;

                /* Word 4 */
                wqe->fcp_tsend.relative_offset = ctxp->offset;

                /* Word 5 */

                /* Word 6 */
                bf_set(wqe_ctxt_tag, &wqe->fcp_tsend.wqe_com,
                       phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
                bf_set(wqe_xri_tag, &wqe->fcp_tsend.wqe_com,
                       nvmewqe->sli4_xritag);

                /* Word 7 */
                bf_set(wqe_cmnd, &wqe->fcp_tsend.wqe_com, CMD_FCP_TSEND64_WQE);

                /* Word 8 */
                wqe->fcp_tsend.wqe_com.abort_tag = nvmewqe->iotag;

                /* Word 9 */
                bf_set(wqe_reqtag, &wqe->fcp_tsend.wqe_com, nvmewqe->iotag);
                bf_set(wqe_rcvoxid, &wqe->fcp_tsend.wqe_com, ctxp->oxid);

                /* Word 10 */
                bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1);
                bf_set(wqe_dbde, &wqe->fcp_tsend.wqe_com, 1);
                bf_set(wqe_iod, &wqe->fcp_tsend.wqe_com, LPFC_WQE_IOD_WRITE);
                bf_set(wqe_lenloc, &wqe->fcp_tsend.wqe_com,
                       LPFC_WQE_LENLOC_WORD12);
                bf_set(wqe_ebde_cnt, &wqe->fcp_tsend.wqe_com, 0);
                bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, xc);
                bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1);
                if (phba->cfg_nvme_oas)
                        bf_set(wqe_oas, &wqe->fcp_tsend.wqe_com, 1);

                /* Word 11 */
                bf_set(wqe_cqid, &wqe->fcp_tsend.wqe_com,
                       LPFC_WQE_CQ_ID_DEFAULT);
                bf_set(wqe_cmd_type, &wqe->fcp_tsend.wqe_com,
                       FCP_COMMAND_TSEND);

                /* Word 12 */
                wqe->fcp_tsend.fcp_data_len = rsp->transfer_length;

                /* Setup 2 SKIP SGEs */
                sgl->addr_hi = 0;
                sgl->addr_lo = 0;
                sgl->word2 = 0;
                bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
                sgl->word2 = cpu_to_le32(sgl->word2);
                sgl->sge_len = 0;
                sgl++;
                sgl->addr_hi = 0;
                sgl->addr_lo = 0;
                sgl->word2 = 0;
                bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
                sgl->word2 = cpu_to_le32(sgl->word2);
                sgl->sge_len = 0;
                sgl++;
                if (rsp->op == NVMET_FCOP_READDATA_RSP) {
                        atomic_inc(&tgtp->xmt_fcp_read_rsp);
                        bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 1);
                        if ((ndlp->nlp_flag & NLP_SUPPRESS_RSP) &&
                            (rsp->rsplen == 12)) {
                                bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 1);
                                bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0);
                                bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0);
                                bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0);
                        } else {
                                bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
                                bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 1);
                                bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 1);
                                bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com,
                                       ((rsp->rsplen >> 2) - 1));
                                memcpy(&wqe->words[16], rsp->rspaddr,
                                       rsp->rsplen);
                        }
                } else {
                        atomic_inc(&tgtp->xmt_fcp_read);

                        bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
                        bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0);
                        bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0);
                        bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0);
                        bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0);
                }
                ctxp->state = LPFC_NVMET_STE_DATA;
                break;

        case NVMET_FCOP_WRITEDATA:
                /* Words 0 - 2 : The first sg segment */
                txrdy = pci_pool_alloc(phba->txrdy_payload_pool,
                                       GFP_KERNEL, &physaddr);
                if (!txrdy) {
                        lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
                                        "6041 Bad txrdy buffer: oxid x%x\n",
                                        ctxp->oxid);
                        return NULL;
                }
                ctxp->txrdy = txrdy;
                ctxp->txrdy_phys = physaddr;
                wqe->fcp_treceive.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
                wqe->fcp_treceive.bde.tus.f.bdeSize = TXRDY_PAYLOAD_LEN;
                wqe->fcp_treceive.bde.addrLow =
                        cpu_to_le32(putPaddrLow(physaddr));
                wqe->fcp_treceive.bde.addrHigh =
                        cpu_to_le32(putPaddrHigh(physaddr));

                /* Word 3 */
                wqe->fcp_treceive.payload_offset_len = TXRDY_PAYLOAD_LEN;

                /* Word 4 */
                wqe->fcp_treceive.relative_offset = ctxp->offset;

                /* Word 5 */

                /* Word 6 */
                bf_set(wqe_ctxt_tag, &wqe->fcp_treceive.wqe_com,
                       phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
                bf_set(wqe_xri_tag, &wqe->fcp_treceive.wqe_com,
                       nvmewqe->sli4_xritag);

                /* Word 7 */
                bf_set(wqe_ar, &wqe->fcp_treceive.wqe_com, 0);
                bf_set(wqe_cmnd, &wqe->fcp_treceive.wqe_com,
                       CMD_FCP_TRECEIVE64_WQE);

                /* Word 8 */
                wqe->fcp_treceive.wqe_com.abort_tag = nvmewqe->iotag;

                /* Word 9 */
                bf_set(wqe_reqtag, &wqe->fcp_treceive.wqe_com, nvmewqe->iotag);
                bf_set(wqe_rcvoxid, &wqe->fcp_treceive.wqe_com, ctxp->oxid);

                /* Word 10 */
                bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1);
                bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1);
                bf_set(wqe_iod, &wqe->fcp_treceive.wqe_com, LPFC_WQE_IOD_READ);
                bf_set(wqe_lenloc, &wqe->fcp_treceive.wqe_com,
                       LPFC_WQE_LENLOC_WORD12);
                bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, xc);
                bf_set(wqe_wqes, &wqe->fcp_treceive.wqe_com, 0);
                bf_set(wqe_irsp, &wqe->fcp_treceive.wqe_com, 0);
                bf_set(wqe_irsplen, &wqe->fcp_treceive.wqe_com, 0);
                bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1);
                if (phba->cfg_nvme_oas)
                        bf_set(wqe_oas, &wqe->fcp_treceive.wqe_com, 1);

                /* Word 11 */
                bf_set(wqe_cqid, &wqe->fcp_treceive.wqe_com,
                       LPFC_WQE_CQ_ID_DEFAULT);
                bf_set(wqe_cmd_type, &wqe->fcp_treceive.wqe_com,
                       FCP_COMMAND_TRECEIVE);
                bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);

                /* Word 12 */
                wqe->fcp_tsend.fcp_data_len = rsp->transfer_length;

                /* Setup 1 TXRDY and 1 SKIP SGE */
                txrdy[0] = 0;
                txrdy[1] = cpu_to_be32(rsp->transfer_length);
                txrdy[2] = 0;

                sgl->addr_hi = putPaddrHigh(physaddr);
                sgl->addr_lo = putPaddrLow(physaddr);
                sgl->word2 = 0;
                bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
                sgl->word2 = cpu_to_le32(sgl->word2);
                sgl->sge_len = cpu_to_le32(TXRDY_PAYLOAD_LEN);
                sgl++;
                sgl->addr_hi = 0;
                sgl->addr_lo = 0;
                sgl->word2 = 0;
                bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
                sgl->word2 = cpu_to_le32(sgl->word2);
                sgl->sge_len = 0;
                sgl++;
                ctxp->state = LPFC_NVMET_STE_DATA;
                atomic_inc(&tgtp->xmt_fcp_write);
                break;

        case NVMET_FCOP_RSP:
                /* Words 0 - 2 */
                physaddr = rsp->rspdma;
                wqe->fcp_trsp.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
                wqe->fcp_trsp.bde.tus.f.bdeSize = rsp->rsplen;
                wqe->fcp_trsp.bde.addrLow =
                        cpu_to_le32(putPaddrLow(physaddr));
                wqe->fcp_trsp.bde.addrHigh =
                        cpu_to_le32(putPaddrHigh(physaddr));

                /* Word 3 */
                wqe->fcp_trsp.response_len = rsp->rsplen;

                /* Word 4 */
                wqe->fcp_trsp.rsvd_4_5[0] = 0;


                /* Word 5 */

                /* Word 6 */
                bf_set(wqe_ctxt_tag, &wqe->fcp_trsp.wqe_com,
                       phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
                bf_set(wqe_xri_tag, &wqe->fcp_trsp.wqe_com,
                       nvmewqe->sli4_xritag);

                /* Word 7 */
                bf_set(wqe_ag, &wqe->fcp_trsp.wqe_com, 1);
                bf_set(wqe_cmnd, &wqe->fcp_trsp.wqe_com, CMD_FCP_TRSP64_WQE);

                /* Word 8 */
                wqe->fcp_trsp.wqe_com.abort_tag = nvmewqe->iotag;

                /* Word 9 */
                bf_set(wqe_reqtag, &wqe->fcp_trsp.wqe_com, nvmewqe->iotag);
                bf_set(wqe_rcvoxid, &wqe->fcp_trsp.wqe_com, ctxp->oxid);

                /* Word 10 */
                bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1);
                bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 0);
                bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_WRITE);
                bf_set(wqe_lenloc, &wqe->fcp_trsp.wqe_com,
                       LPFC_WQE_LENLOC_WORD3);
                bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, xc);
                bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1);
                if (phba->cfg_nvme_oas)
                        bf_set(wqe_oas, &wqe->fcp_trsp.wqe_com, 1);

                /* Word 11 */
                bf_set(wqe_cqid, &wqe->fcp_trsp.wqe_com,
                       LPFC_WQE_CQ_ID_DEFAULT);
                bf_set(wqe_cmd_type, &wqe->fcp_trsp.wqe_com,
                       FCP_COMMAND_TRSP);
                bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
                ctxp->state = LPFC_NVMET_STE_RSP;

                if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) {
                        /* Good response - all zero's on wire */
                        bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 0);
                        bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 0);
                        bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 0);
                } else {
                        bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 1);
                        bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 1);
                        bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com,
                               ((rsp->rsplen >> 2) - 1));
                        memcpy(&wqe->words[16], rsp->rspaddr, rsp->rsplen);
                }

                /* Use rspbuf, NOT sg list */
                rsp->sg_cnt = 0;
                sgl->word2 = 0;
                atomic_inc(&tgtp->xmt_fcp_rsp);
                break;

        default:
                lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
                                "6064 Unknown Rsp Op %d\n",
                                rsp->op);
                return NULL;
        }

        nvmewqe->retry = 1;
        nvmewqe->vport = phba->pport;
        nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT;
        nvmewqe->context1 = ndlp;

        for (i = 0; i < rsp->sg_cnt; i++) {
                sgel = &rsp->sg[i];
                physaddr = sg_dma_address(sgel);
                cnt = sg_dma_len(sgel);
                sgl->addr_hi = putPaddrHigh(physaddr);
                sgl->addr_lo = putPaddrLow(physaddr);
                sgl->word2 = 0;
                bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
                bf_set(lpfc_sli4_sge_offset, sgl, ctxp->offset);
                if ((i+1) == rsp->sg_cnt)
                        bf_set(lpfc_sli4_sge_last, sgl, 1);
                sgl->word2 = cpu_to_le32(sgl->word2);
                sgl->sge_len = cpu_to_le32(cnt);
                sgl++;
                ctxp->offset += cnt;
        }
        return nvmewqe;
}

/**
 * lpfc_nvmet_sol_fcp_abort_cmp - Completion handler for ABTS
 * @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. This function is the completion handler for NVME ABTS for FCP cmds
 * The function frees memory resources used for the NVME commands.
 **/
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_nvmet_tgtport *tgtp;
        uint32_t status, result;
        unsigned long flags;
        bool released = false;

        ctxp = cmdwqe->context2;
        status = bf_get(lpfc_wcqe_c_status, wcqe);
        result = wcqe->parameter;

        tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
        atomic_inc(&tgtp->xmt_abort_cmpl);

        ctxp->state = LPFC_NVMET_STE_DONE;

        /* Check if we already received a free context call
         * and we have completed processing an abort situation.
         */
        spin_lock_irqsave(&ctxp->ctxlock, flags);
        if ((ctxp->flag & LPFC_NVMET_CTX_RLS) &&
            !(ctxp->flag & LPFC_NVMET_XBUSY)) {
                list_del(&ctxp->list);
                released = true;
        }
        ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
        spin_unlock_irqrestore(&ctxp->ctxlock, flags);

        lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
                        "6165 ABORT cmpl: xri x%x flg x%x (%d) "
                        "WCQE: %08x %08x %08x %08x\n",
                        ctxp->oxid, ctxp->flag, released,
                        wcqe->word0, wcqe->total_data_placed,
                        result, wcqe->word3);

        /*
         * if transport has released ctx, then can reuse it. Otherwise,
         * will be recycled by transport release call.
         */
        if (released)
                lpfc_nvmet_rq_post(phba, ctxp, &ctxp->rqb_buffer->hbuf);

        cmdwqe->context2 = NULL;
        cmdwqe->context3 = NULL;
        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
         * should have been called already.
         */
}

/**
 * lpfc_nvmet_unsol_fcp_abort_cmp - Completion handler for ABTS
 * @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. This function is the completion handler for NVME ABTS for FCP cmds
 * The function frees memory resources used for the NVME commands.
 **/
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_nvmet_tgtport *tgtp;
        unsigned long flags;
        uint32_t status, result;
        bool released = false;

        ctxp = cmdwqe->context2;
        status = bf_get(lpfc_wcqe_c_status, wcqe);
        result = wcqe->parameter;

        tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
        atomic_inc(&tgtp->xmt_abort_cmpl);

        if (!ctxp) {
                /* if context is clear, related io alrady complete */
                lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                                "6070 ABTS cmpl: WCQE: %08x %08x %08x %08x\n",
                                wcqe->word0, wcqe->total_data_placed,
                                result, wcqe->word3);
                return;
        }

        /* Sanity check */
        if (ctxp->state != LPFC_NVMET_STE_ABORT) {
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
                                "6112 ABTS Wrong state:%d oxid x%x\n",
                                ctxp->state, ctxp->oxid);
        }

        /* Check if we already received a free context call
         * and we have completed processing an abort situation.
         */
        ctxp->state = LPFC_NVMET_STE_DONE;
        spin_lock_irqsave(&ctxp->ctxlock, flags);
        if ((ctxp->flag & LPFC_NVMET_CTX_RLS) &&
            !(ctxp->flag & LPFC_NVMET_XBUSY)) {
                list_del(&ctxp->list);
                released = true;
        }
        ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
        spin_unlock_irqrestore(&ctxp->ctxlock, flags);

        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                        "6316 ABTS cmpl xri x%x flg x%x (%x) "
                        "WCQE: %08x %08x %08x %08x\n",
                        ctxp->oxid, ctxp->flag, released,
                        wcqe->word0, wcqe->total_data_placed,
                        result, wcqe->word3);
        /*
         * if transport has released ctx, then can reuse it. Otherwise,
         * will be recycled by transport release call.
         */
        if (released)
                lpfc_nvmet_rq_post(phba, ctxp, &ctxp->rqb_buffer->hbuf);

        cmdwqe->context2 = NULL;
        cmdwqe->context3 = NULL;

        /* Since iaab/iaar are NOT set, there is no work left.
         * For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted
         * should have been called already.
         */
}

/**
 * lpfc_nvmet_xmt_ls_abort_cmp - Completion handler for ABTS
 * @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. This function is the completion handler for NVME ABTS for LS cmds
 * The function frees memory resources used for the NVME commands.
 **/
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_nvmet_tgtport *tgtp;
        uint32_t status, result;

        ctxp = cmdwqe->context2;
        status = bf_get(lpfc_wcqe_c_status, wcqe);
        result = wcqe->parameter;

        tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
        atomic_inc(&tgtp->xmt_abort_cmpl);

        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                        "6083 Abort cmpl: ctx %p WCQE: %08x %08x %08x %08x\n",
                        ctxp, wcqe->word0, wcqe->total_data_placed,
                        result, wcqe->word3);

        if (ctxp) {
                cmdwqe->context2 = NULL;
                cmdwqe->context3 = NULL;
                lpfc_sli_release_iocbq(phba, cmdwqe);
                kfree(ctxp);
        } else
                lpfc_sli_release_iocbq(phba, cmdwqe);
}

static int
lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba,
                             struct lpfc_nvmet_rcv_ctx *ctxp,
                             uint32_t sid, uint16_t xri)
{
        struct lpfc_nvmet_tgtport *tgtp;
        struct lpfc_iocbq *abts_wqeq;
        union lpfc_wqe *wqe_abts;
        struct lpfc_nodelist *ndlp;

        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                        "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 (!ctxp->wqeq) {
                ctxp->wqeq = ctxp->rqb_buffer->iocbq;
                ctxp->wqeq->hba_wqidx = 0;
        }

        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);
                lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
                                "6134 Drop ABTS - wrong NDLP state x%x.\n",
                                (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);

                /* No failure to an ABTS request. */
                return 0;
        }

        abts_wqeq = ctxp->wqeq;
        wqe_abts = &abts_wqeq->wqe;
        ctxp->state = LPFC_NVMET_STE_ABORT;

        /*
         * Since we zero the whole WQE, we need to ensure we set the WQE fields
         * that were initialized in lpfc_sli4_nvmet_alloc.
         */
        memset(wqe_abts, 0, sizeof(union lpfc_wqe));

        /* Word 5 */
        bf_set(wqe_dfctl, &wqe_abts->xmit_sequence.wge_ctl, 0);
        bf_set(wqe_ls, &wqe_abts->xmit_sequence.wge_ctl, 1);
        bf_set(wqe_la, &wqe_abts->xmit_sequence.wge_ctl, 0);
        bf_set(wqe_rctl, &wqe_abts->xmit_sequence.wge_ctl, FC_RCTL_BA_ABTS);
        bf_set(wqe_type, &wqe_abts->xmit_sequence.wge_ctl, FC_TYPE_BLS);

        /* Word 6 */
        bf_set(wqe_ctxt_tag, &wqe_abts->xmit_sequence.wqe_com,
               phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
        bf_set(wqe_xri_tag, &wqe_abts->xmit_sequence.wqe_com,
               abts_wqeq->sli4_xritag);

        /* Word 7 */
        bf_set(wqe_cmnd, &wqe_abts->xmit_sequence.wqe_com,
               CMD_XMIT_SEQUENCE64_WQE);
        bf_set(wqe_ct, &wqe_abts->xmit_sequence.wqe_com, SLI4_CT_RPI);
        bf_set(wqe_class, &wqe_abts->xmit_sequence.wqe_com, CLASS3);
        bf_set(wqe_pu, &wqe_abts->xmit_sequence.wqe_com, 0);

        /* Word 8 */
        wqe_abts->xmit_sequence.wqe_com.abort_tag = abts_wqeq->iotag;

        /* Word 9 */
        bf_set(wqe_reqtag, &wqe_abts->xmit_sequence.wqe_com, abts_wqeq->iotag);
        /* Needs to be set by caller */
        bf_set(wqe_rcvoxid, &wqe_abts->xmit_sequence.wqe_com, xri);

        /* Word 10 */
        bf_set(wqe_dbde, &wqe_abts->xmit_sequence.wqe_com, 1);
        bf_set(wqe_iod, &wqe_abts->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE);
        bf_set(wqe_lenloc, &wqe_abts->xmit_sequence.wqe_com,
               LPFC_WQE_LENLOC_WORD12);
        bf_set(wqe_ebde_cnt, &wqe_abts->xmit_sequence.wqe_com, 0);
        bf_set(wqe_qosd, &wqe_abts->xmit_sequence.wqe_com, 0);

        /* Word 11 */
        bf_set(wqe_cqid, &wqe_abts->xmit_sequence.wqe_com,
               LPFC_WQE_CQ_ID_DEFAULT);
        bf_set(wqe_cmd_type, &wqe_abts->xmit_sequence.wqe_com,
               OTHER_COMMAND);

        abts_wqeq->vport = phba->pport;
        abts_wqeq->context1 = ndlp;
        abts_wqeq->context2 = ctxp;
        abts_wqeq->context3 = NULL;
        abts_wqeq->rsvd2 = 0;
        /* hba_wqidx should already be setup from command we are aborting */
        abts_wqeq->iocb.ulpCommand = CMD_XMIT_SEQUENCE64_CR;
        abts_wqeq->iocb.ulpLe = 1;

        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                        "6069 Issue ABTS to xri x%x reqtag x%x\n",
                        xri, abts_wqeq->iotag);
        return 1;
}

static int
lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
                               struct lpfc_nvmet_rcv_ctx *ctxp,
                               uint32_t sid, uint16_t xri)
{
        struct lpfc_nvmet_tgtport *tgtp;
        struct lpfc_iocbq *abts_wqeq;
        union lpfc_wqe *abts_wqe;
        struct lpfc_nodelist *ndlp;
        unsigned long flags;
        int rc;

        tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
        if (!ctxp->wqeq) {
                ctxp->wqeq = ctxp->rqb_buffer->iocbq;
                ctxp->wqeq->hba_wqidx = 0;
        }

        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);
                lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
                                "6160 Drop ABORT - wrong NDLP state x%x.\n",
                                (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);

                /* No failure to an ABTS request. */
                ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
                return 0;
        }

        /* Issue ABTS for this WQE based on iotag */
        ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba);
        if (!ctxp->abort_wqeq) {
                lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
                                "6161 ABORT failed: No wqeqs: "
                                "xri: x%x\n", ctxp->oxid);
                /* No failure to an ABTS request. */
                ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
                return 0;
        }
        abts_wqeq = ctxp->abort_wqeq;
        abts_wqe = &abts_wqeq->wqe;
        ctxp->state = LPFC_NVMET_STE_ABORT;

        /* Announce entry to new IO submit field. */
        lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
                        "6162 ABORT Request to rport DID x%06x "
                        "for xri x%x x%x\n",
                        ctxp->sid, ctxp->oxid, ctxp->wqeq->sli4_xritag);

        /* If the hba is getting reset, this flag is set.  It is
         * cleared when the reset is complete and rings reestablished.
         */
        spin_lock_irqsave(&phba->hbalock, flags);
        /* driver queued commands are in process of being flushed */
        if (phba->hba_flag & HBA_NVME_IOQ_FLUSH) {
                spin_unlock_irqrestore(&phba->hbalock, flags);
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
                                "6163 Driver in reset cleanup - flushing "
                                "NVME Req now. hba_flag x%x oxid x%x\n",
                                phba->hba_flag, ctxp->oxid);
                lpfc_sli_release_iocbq(phba, abts_wqeq);
                ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
                return 0;
        }

        /* Outstanding abort is in progress */
        if (abts_wqeq->iocb_flag & LPFC_DRIVER_ABORTED) {
                spin_unlock_irqrestore(&phba->hbalock, flags);
                lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
                                "6164 Outstanding NVME I/O Abort Request "
                                "still pending on oxid x%x\n",
                                ctxp->oxid);
                lpfc_sli_release_iocbq(phba, abts_wqeq);
                ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
                return 0;
        }

        /* Ready - mark outstanding as aborted by driver. */
        abts_wqeq->iocb_flag |= LPFC_DRIVER_ABORTED;

        /* WQEs are reused.  Clear stale data and set key fields to
         * zero like ia, iaab, iaar, xri_tag, and ctxt_tag.
         */
        memset(abts_wqe, 0, sizeof(union lpfc_wqe));

        /* word 3 */
        bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG);

        /* word 7 */
        bf_set(wqe_ct, &abts_wqe->abort_cmd.wqe_com, 0);
        bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX);

        /* word 8 - tell the FW to abort the IO associated with this
         * outstanding exchange ID.
         */
        abts_wqe->abort_cmd.wqe_com.abort_tag = ctxp->wqeq->sli4_xritag;

        /* word 9 - this is the iotag for the abts_wqe completion. */
        bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com,
               abts_wqeq->iotag);

        /* word 10 */
        bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1);
        bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE);

        /* word 11 */
        bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND);
        bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1);
        bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);

        /* ABTS WQE must go to the same WQ as the WQE to be aborted */
        abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx;
        abts_wqeq->wqe_cmpl = lpfc_nvmet_sol_fcp_abort_cmp;
        abts_wqeq->iocb_cmpl = 0;
        abts_wqeq->iocb_flag |= LPFC_IO_NVME;
        abts_wqeq->context2 = ctxp;
        rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_wqeq);
        spin_unlock_irqrestore(&phba->hbalock, flags);
        if (rc == WQE_SUCCESS)
                return 0;

        ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
        lpfc_sli_release_iocbq(phba, abts_wqeq);
        lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
                        "6166 Failed ABORT issue_wqe with status x%x "
                        "for oxid x%x.\n",
                        rc, ctxp->oxid);
        return 1;
}


static int
lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba,
                                 struct lpfc_nvmet_rcv_ctx *ctxp,
                                 uint32_t sid, uint16_t xri)
{
        struct lpfc_nvmet_tgtport *tgtp;
        struct lpfc_iocbq *abts_wqeq;
        unsigned long flags;
        int rc;

        tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
        if (!ctxp->wqeq) {
                ctxp->wqeq = ctxp->rqb_buffer->iocbq;
                ctxp->wqeq->hba_wqidx = 0;
        }

        rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri);
        if (rc == 0)
                goto aerr;

        spin_lock_irqsave(&phba->hbalock, flags);
        abts_wqeq = ctxp->wqeq;
        abts_wqeq->wqe_cmpl = lpfc_nvmet_unsol_fcp_abort_cmp;
        abts_wqeq->iocb_cmpl = NULL;
        abts_wqeq->iocb_flag |= LPFC_IO_NVMET;
        rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_wqeq);
        spin_unlock_irqrestore(&phba->hbalock, flags);
        if (rc == WQE_SUCCESS) {
                atomic_inc(&tgtp->xmt_abort_rsp);
                return 0;
        }

aerr:
        ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
        atomic_inc(&tgtp->xmt_abort_rsp_error);
        lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
                        "6135 Failed to Issue ABTS for oxid x%x. Status x%x\n",
                        ctxp->oxid, rc);
        return 1;
}

static int
lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba,
                                struct lpfc_nvmet_rcv_ctx *ctxp,
                                uint32_t sid, uint16_t xri)
{
        struct lpfc_nvmet_tgtport *tgtp;
        struct lpfc_iocbq *abts_wqeq;
        union lpfc_wqe *wqe_abts;
        unsigned long flags;
        int rc;

        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);
                if (!ctxp->wqeq) {
                        lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
                                        "6068 Abort failed: No wqeqs: "
                                        "xri: x%x\n", xri);
                        /* No failure to an ABTS request. */
                        kfree(ctxp);
                        return 0;
                }
        }
        abts_wqeq = ctxp->wqeq;
        wqe_abts = &abts_wqeq->wqe;
        lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri);

        spin_lock_irqsave(&phba->hbalock, flags);
        abts_wqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_abort_cmp;
        abts_wqeq->iocb_cmpl = 0;
        abts_wqeq->iocb_flag |=  LPFC_IO_NVME_LS;
        rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, abts_wqeq);
        spin_unlock_irqrestore(&phba->hbalock, flags);
        if (rc == WQE_SUCCESS) {
                atomic_inc(&tgtp->xmt_abort_rsp);
                return 0;
        }

        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_WARNING, LOG_NVME_ABTS,
                        "6056 Failed to Issue ABTS. Status x%x\n", rc);
        return 0;
}