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Diffstat (limited to 'drivers/scsi/lpfc/lpfc_nvmet.c')
-rw-r--r--drivers/scsi/lpfc/lpfc_nvmet.c3645
1 files changed, 3645 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_nvmet.c b/drivers/scsi/lpfc/lpfc_nvmet.c
new file mode 100644
index 000000000..f7cfac0da
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_nvmet.c
@@ -0,0 +1,3645 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for *
+ * Fibre Channel Host Bus Adapters. *
+ * Copyright (C) 2017-2022 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. *
+ ********************************************************************/
+#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 "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_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_async_xchg_ctx *,
+ dma_addr_t rspbuf,
+ uint16_t rspsize);
+static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *,
+ struct lpfc_async_xchg_ctx *);
+static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *,
+ struct lpfc_async_xchg_ctx *,
+ uint32_t, uint16_t);
+static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *,
+ struct lpfc_async_xchg_ctx *,
+ uint32_t, uint16_t);
+static void lpfc_nvmet_wqfull_flush(struct lpfc_hba *, struct lpfc_queue *,
+ 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);
+
+static union lpfc_wqe128 lpfc_tsend_cmd_template;
+static union lpfc_wqe128 lpfc_treceive_cmd_template;
+static union lpfc_wqe128 lpfc_trsp_cmd_template;
+
+/* Setup WQE templates for NVME IOs */
+void
+lpfc_nvmet_cmd_template(void)
+{
+ union lpfc_wqe128 *wqe;
+
+ /* TSEND template */
+ wqe = &lpfc_tsend_cmd_template;
+ memset(wqe, 0, sizeof(union lpfc_wqe128));
+
+ /* Word 0, 1, 2 - BDE is variable */
+
+ /* Word 3 - payload_offset_len is zero */
+
+ /* Word 4 - relative_offset is variable */
+
+ /* Word 5 - is zero */
+
+ /* Word 6 - ctxt_tag, xri_tag is variable */
+
+ /* Word 7 - wqe_ar is variable */
+ bf_set(wqe_cmnd, &wqe->fcp_tsend.wqe_com, CMD_FCP_TSEND64_WQE);
+ bf_set(wqe_pu, &wqe->fcp_tsend.wqe_com, PARM_REL_OFF);
+ bf_set(wqe_class, &wqe->fcp_tsend.wqe_com, CLASS3);
+ bf_set(wqe_ct, &wqe->fcp_tsend.wqe_com, SLI4_CT_RPI);
+ bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 1);
+
+ /* Word 8 - abort_tag is variable */
+
+ /* Word 9 - reqtag, rcvoxid is variable */
+
+ /* Word 10 - wqes, xc is variable */
+ bf_set(wqe_xchg, &wqe->fcp_tsend.wqe_com, LPFC_NVME_XCHG);
+ bf_set(wqe_dbde, &wqe->fcp_tsend.wqe_com, 1);
+ bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0);
+ bf_set(wqe_xc, &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);
+
+ /* Word 11 - sup, irsp, irsplen is variable */
+ bf_set(wqe_cmd_type, &wqe->fcp_tsend.wqe_com, FCP_COMMAND_TSEND);
+ bf_set(wqe_cqid, &wqe->fcp_tsend.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
+ bf_set(wqe_sup, &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);
+ bf_set(wqe_pbde, &wqe->fcp_tsend.wqe_com, 0);
+
+ /* Word 12 - fcp_data_len is variable */
+
+ /* Word 13, 14, 15 - PBDE is zero */
+
+ /* TRECEIVE template */
+ wqe = &lpfc_treceive_cmd_template;
+ memset(wqe, 0, sizeof(union lpfc_wqe128));
+
+ /* Word 0, 1, 2 - BDE is variable */
+
+ /* Word 3 */
+ wqe->fcp_treceive.payload_offset_len = TXRDY_PAYLOAD_LEN;
+
+ /* Word 4 - relative_offset is variable */
+
+ /* Word 5 - is zero */
+
+ /* Word 6 - ctxt_tag, xri_tag is variable */
+
+ /* Word 7 */
+ bf_set(wqe_cmnd, &wqe->fcp_treceive.wqe_com, CMD_FCP_TRECEIVE64_WQE);
+ bf_set(wqe_pu, &wqe->fcp_treceive.wqe_com, PARM_REL_OFF);
+ bf_set(wqe_class, &wqe->fcp_treceive.wqe_com, CLASS3);
+ bf_set(wqe_ct, &wqe->fcp_treceive.wqe_com, SLI4_CT_RPI);
+ bf_set(wqe_ar, &wqe->fcp_treceive.wqe_com, 0);
+
+ /* Word 8 - abort_tag is variable */
+
+ /* Word 9 - reqtag, rcvoxid is variable */
+
+ /* Word 10 - xc is variable */
+ bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1);
+ bf_set(wqe_wqes, &wqe->fcp_treceive.wqe_com, 0);
+ bf_set(wqe_xchg, &wqe->fcp_treceive.wqe_com, LPFC_NVME_XCHG);
+ 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_tsend.wqe_com, 1);
+
+ /* Word 11 - pbde is variable */
+ bf_set(wqe_cmd_type, &wqe->fcp_treceive.wqe_com, FCP_COMMAND_TRECEIVE);
+ bf_set(wqe_cqid, &wqe->fcp_treceive.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
+ bf_set(wqe_sup, &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_pbde, &wqe->fcp_treceive.wqe_com, 1);
+
+ /* Word 12 - fcp_data_len is variable */
+
+ /* Word 13, 14, 15 - PBDE is variable */
+
+ /* TRSP template */
+ wqe = &lpfc_trsp_cmd_template;
+ memset(wqe, 0, sizeof(union lpfc_wqe128));
+
+ /* Word 0, 1, 2 - BDE is variable */
+
+ /* Word 3 - response_len is variable */
+
+ /* Word 4, 5 - is zero */
+
+ /* Word 6 - ctxt_tag, xri_tag is variable */
+
+ /* Word 7 */
+ bf_set(wqe_cmnd, &wqe->fcp_trsp.wqe_com, CMD_FCP_TRSP64_WQE);
+ bf_set(wqe_pu, &wqe->fcp_trsp.wqe_com, PARM_UNUSED);
+ bf_set(wqe_class, &wqe->fcp_trsp.wqe_com, CLASS3);
+ bf_set(wqe_ct, &wqe->fcp_trsp.wqe_com, SLI4_CT_RPI);
+ bf_set(wqe_ag, &wqe->fcp_trsp.wqe_com, 1); /* wqe_ar */
+
+ /* Word 8 - abort_tag is variable */
+
+ /* Word 9 - reqtag is variable */
+
+ /* Word 10 wqes, xc is variable */
+ bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 1);
+ bf_set(wqe_xchg, &wqe->fcp_trsp.wqe_com, LPFC_NVME_XCHG);
+ bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 0);
+ bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 0);
+ bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_NONE);
+ bf_set(wqe_lenloc, &wqe->fcp_trsp.wqe_com, LPFC_WQE_LENLOC_WORD3);
+
+ /* Word 11 irsp, irsplen is variable */
+ bf_set(wqe_cmd_type, &wqe->fcp_trsp.wqe_com, FCP_COMMAND_TRSP);
+ bf_set(wqe_cqid, &wqe->fcp_trsp.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
+ bf_set(wqe_sup, &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);
+ bf_set(wqe_pbde, &wqe->fcp_trsp.wqe_com, 0);
+
+ /* Word 12, 13, 14, 15 - is zero */
+}
+
+#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
+static struct lpfc_async_xchg_ctx *
+lpfc_nvmet_get_ctx_for_xri(struct lpfc_hba *phba, u16 xri)
+{
+ struct lpfc_async_xchg_ctx *ctxp;
+ unsigned long iflag;
+ bool found = false;
+
+ spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag);
+ list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) {
+ if (ctxp->ctxbuf->sglq->sli4_xritag != xri)
+ continue;
+
+ found = true;
+ break;
+ }
+ spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag);
+ if (found)
+ return ctxp;
+
+ return NULL;
+}
+
+static struct lpfc_async_xchg_ctx *
+lpfc_nvmet_get_ctx_for_oxid(struct lpfc_hba *phba, u16 oxid, u32 sid)
+{
+ struct lpfc_async_xchg_ctx *ctxp;
+ unsigned long iflag;
+ bool found = false;
+
+ spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag);
+ list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) {
+ if (ctxp->oxid != oxid || ctxp->sid != sid)
+ continue;
+
+ found = true;
+ break;
+ }
+ spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag);
+ if (found)
+ return ctxp;
+
+ return NULL;
+}
+#endif
+
+static void
+lpfc_nvmet_defer_release(struct lpfc_hba *phba,
+ struct lpfc_async_xchg_ctx *ctxp)
+{
+ lockdep_assert_held(&ctxp->ctxlock);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6313 NVMET Defer ctx release oxid x%x flg x%x\n",
+ ctxp->oxid, ctxp->flag);
+
+ if (ctxp->flag & LPFC_NVME_CTX_RLS)
+ return;
+
+ 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);
+ spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
+ list_add_tail(&ctxp->list, &phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
+ spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
+}
+
+/**
+ * __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.
+ * @rspwqe: Pointer to driver response WQE 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_iocbq *rspwqe)
+{
+ struct lpfc_async_xchg_ctx *axchg = cmdwqe->context_un.axchg;
+ struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
+ 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_TRACE_EVENT,
+ "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->ndlp);
+ cmdwqe->context_un.axchg = NULL;
+ cmdwqe->bpl_dmabuf = 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.
+ * @rspwqe: Pointer to driver response WQE 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 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_iocbq *rspwqe)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+ uint32_t status, result;
+ struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
+
+ if (!phba->targetport)
+ goto finish;
+
+ 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);
+ if (result == IOERR_ABORT_REQUESTED)
+ atomic_inc(&tgtp->xmt_ls_rsp_aborted);
+ if (bf_get(lpfc_wcqe_c_xb, wcqe))
+ atomic_inc(&tgtp->xmt_ls_rsp_xb_set);
+ } else {
+ atomic_inc(&tgtp->xmt_ls_rsp_cmpl);
+ }
+ }
+
+finish:
+ __lpfc_nvme_xmt_ls_rsp_cmp(phba, cmdwqe, rspwqe);
+}
+
+/**
+ * lpfc_nvmet_ctxbuf_post - Repost a NVMET RQ DMA buffer and clean up context
+ * @phba: HBA buffer is associated with
+ * @ctx_buf: ctx buffer context
+ *
+ * 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_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
+{
+#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
+ struct lpfc_async_xchg_ctx *ctxp = ctx_buf->context;
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct fc_frame_header *fc_hdr;
+ struct rqb_dmabuf *nvmebuf;
+ struct lpfc_nvmet_ctx_info *infop;
+ uint32_t size, oxid, sid;
+ int cpu;
+ unsigned long iflag;
+
+ if (ctxp->state == LPFC_NVME_STE_FREE) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6411 NVMET free, already free IO x%x: %d %d\n",
+ ctxp->oxid, ctxp->state, ctxp->entry_cnt);
+ }
+
+ if (ctxp->rqb_buffer) {
+ spin_lock_irqsave(&ctxp->ctxlock, iflag);
+ nvmebuf = ctxp->rqb_buffer;
+ /* check if freed in another path whilst acquiring lock */
+ if (nvmebuf) {
+ ctxp->rqb_buffer = NULL;
+ 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);
+ } else {
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
+ /* repost */
+ lpfc_rq_buf_free(phba, &nvmebuf->hbuf);
+ }
+ } else {
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
+ }
+ }
+ 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) {
+ list_remove_head(&phba->sli4_hba.lpfc_nvmet_io_wait_list,
+ nvmebuf, struct rqb_dmabuf,
+ hbuf.list);
+ phba->sli4_hba.nvmet_io_wait_cnt--;
+ spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock,
+ iflag);
+
+ 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;
+ size = nvmebuf->bytes_recv;
+ sid = sli4_sid_from_fc_hdr(fc_hdr);
+
+ 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_NVME_STE_RCV;
+ ctxp->entry_cnt = 1;
+ ctxp->flag = 0;
+ ctxp->ctxbuf = ctx_buf;
+ ctxp->rqb_buffer = (void *)nvmebuf;
+ spin_lock_init(&ctxp->ctxlock);
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ /* NOTE: isr time stamp is stale when context is re-assigned*/
+ if (ctxp->ts_isr_cmd) {
+ ctxp->ts_cmd_nvme = 0;
+ 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;
+ }
+#endif
+ atomic_inc(&tgtp->rcv_fcp_cmd_in);
+
+ /* Indicate that a replacement buffer has been posted */
+ spin_lock_irqsave(&ctxp->ctxlock, iflag);
+ ctxp->flag |= LPFC_NVME_CTX_REUSE_WQ;
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
+
+ if (!queue_work(phba->wq, &ctx_buf->defer_work)) {
+ atomic_inc(&tgtp->rcv_fcp_cmd_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6181 Unable to queue deferred work "
+ "for oxid x%x. "
+ "FCP Drop IO [x%x x%x x%x]\n",
+ ctxp->oxid,
+ atomic_read(&tgtp->rcv_fcp_cmd_in),
+ atomic_read(&tgtp->rcv_fcp_cmd_out),
+ atomic_read(&tgtp->xmt_fcp_release));
+
+ spin_lock_irqsave(&ctxp->ctxlock, iflag);
+ lpfc_nvmet_defer_release(phba, ctxp);
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
+ lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid);
+ }
+ return;
+ }
+ spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
+
+ /*
+ * Use the CPU context list, from the MRQ the IO was received on
+ * (ctxp->idx), to save context structure.
+ */
+ spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag);
+ list_del_init(&ctxp->list);
+ spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag);
+ cpu = raw_smp_processor_id();
+ infop = lpfc_get_ctx_list(phba, cpu, ctxp->idx);
+ spin_lock_irqsave(&infop->nvmet_ctx_list_lock, iflag);
+ list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list);
+ infop->nvmet_ctx_list_cnt++;
+ spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, iflag);
+#endif
+}
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+static void
+lpfc_nvmet_ktime(struct lpfc_hba *phba,
+ struct lpfc_async_xchg_ctx *ctxp)
+{
+ uint64_t seg1, seg2, seg3, seg4, seg5;
+ uint64_t seg6, seg7, seg8, seg9, seg10;
+ uint64_t segsum;
+
+ 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_status_nvme < ctxp->ts_isr_cmd)
+ 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;
+ segsum = seg1;
+
+ seg2 = ctxp->ts_nvme_data - ctxp->ts_isr_cmd;
+ if (segsum > seg2)
+ return;
+ seg2 -= segsum;
+ segsum += seg2;
+
+ seg3 = ctxp->ts_data_wqput - ctxp->ts_isr_cmd;
+ if (segsum > seg3)
+ return;
+ seg3 -= segsum;
+ segsum += seg3;
+
+ seg4 = ctxp->ts_isr_data - ctxp->ts_isr_cmd;
+ if (segsum > seg4)
+ return;
+ seg4 -= segsum;
+ segsum += seg4;
+
+ seg5 = ctxp->ts_data_nvme - ctxp->ts_isr_cmd;
+ if (segsum > seg5)
+ return;
+ seg5 -= segsum;
+ segsum += seg5;
+
+
+ /* 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;
+ if (segsum > seg6)
+ return;
+ seg6 -= segsum;
+ segsum += seg6;
+
+ seg7 = ctxp->ts_status_wqput - ctxp->ts_isr_cmd;
+ if (segsum > seg7)
+ return;
+ seg7 -= segsum;
+ segsum += seg7;
+
+ seg8 = ctxp->ts_isr_status - ctxp->ts_isr_cmd;
+ if (segsum > seg8)
+ return;
+ seg8 -= segsum;
+ segsum += seg8;
+
+ seg9 = ctxp->ts_status_nvme - ctxp->ts_isr_cmd;
+ if (segsum > seg9)
+ return;
+ seg9 -= segsum;
+ segsum += seg9;
+
+ if (ctxp->ts_isr_status < ctxp->ts_isr_cmd)
+ return;
+ seg10 = (ctxp->ts_isr_status -
+ ctxp->ts_isr_cmd);
+ } else {
+ if (ctxp->ts_isr_data < ctxp->ts_isr_cmd)
+ return;
+ 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.
+ * @rspwqe: Pointer to driver response WQE 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_iocbq *rspwqe)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct nvmefc_tgt_fcp_req *rsp;
+ struct lpfc_async_xchg_ctx *ctxp;
+ uint32_t status, result, op, logerr;
+ struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ int id;
+#endif
+
+ ctxp = cmdwqe->context_un.axchg;
+ ctxp->flag &= ~LPFC_NVME_IO_INP;
+
+ rsp = &ctxp->hdlrctx.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);
+ if (result == IOERR_ABORT_REQUESTED)
+ atomic_inc(&tgtp->xmt_fcp_rsp_aborted);
+ }
+
+ logerr = LOG_NVME_IOERR;
+
+ /* pick up SLI4 exhange busy condition */
+ if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
+ ctxp->flag |= LPFC_NVME_XBUSY;
+ logerr |= LOG_NVME_ABTS;
+ if (tgtp)
+ atomic_inc(&tgtp->xmt_fcp_rsp_xb_set);
+
+ } else {
+ ctxp->flag &= ~LPFC_NVME_XBUSY;
+ }
+
+ lpfc_printf_log(phba, KERN_INFO, logerr,
+ "6315 IO Error Cmpl oxid: x%x xri: x%x %x/%x "
+ "XBUSY:x%x\n",
+ ctxp->oxid, ctxp->ctxbuf->sglq->sli4_xritag,
+ status, result, ctxp->flag);
+
+ } 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_NVME_STE_DONE;
+ ctxp->entry_cnt++;
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (ctxp->ts_cmd_nvme) {
+ 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();
+ }
+ }
+#endif
+ rsp->done(rsp);
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (ctxp->ts_cmd_nvme)
+ lpfc_nvmet_ktime(phba, ctxp);
+#endif
+ /* lpfc_nvmet_xmt_fcp_release() will recycle the context */
+ } else {
+ ctxp->entry_cnt++;
+ memset_startat(cmdwqe, 0, cmd_flag);
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (ctxp->ts_cmd_nvme) {
+ ctxp->ts_isr_data = cmdwqe->isr_timestamp;
+ ctxp->ts_data_nvme = ktime_get_ns();
+ }
+#endif
+ rsp->done(rsp);
+ }
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) {
+ id = raw_smp_processor_id();
+ this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io);
+ if (ctxp->cpu != id)
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
+ "6704 CPU Check cmdcmpl: "
+ "cpu %d expect %d\n",
+ id, ctxp->cpu);
+ }
+#endif
+}
+
+/**
+ * __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_iocbq *rspwqe))
+{
+ struct lpfc_hba *phba = axchg->phba;
+ struct hbq_dmabuf *nvmebuf = (struct hbq_dmabuf *)axchg->rqb_buffer;
+ struct lpfc_iocbq *nvmewqeq;
+ struct lpfc_dmabuf dmabuf;
+ struct ulp_bde64 bpl;
+ int rc;
+
+ if (phba->pport->load_flag & FC_UNLOADING)
+ return -ENODEV;
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
+ "6023 NVMEx LS rsp oxid x%x\n", axchg->oxid);
+
+ if (axchg->state != LPFC_NVME_STE_LS_RCV || axchg->entry_cnt != 1) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6412 NVMEx LS rsp state mismatch "
+ "oxid x%x: %d %d\n",
+ axchg->oxid, axchg->state, axchg->entry_cnt);
+ return -EALREADY;
+ }
+ axchg->state = LPFC_NVME_STE_LS_RSP;
+ axchg->entry_cnt++;
+
+ nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, axchg, ls_rsp->rspdma,
+ ls_rsp->rsplen);
+ if (nvmewqeq == NULL) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6150 NVMEx LS Drop Rsp x%x: Prep\n",
+ axchg->oxid);
+ rc = -ENOMEM;
+ goto out_free_buf;
+ }
+
+ /* Save numBdes for bpl2sgl */
+ nvmewqeq->num_bdes = 1;
+ nvmewqeq->hba_wqidx = 0;
+ nvmewqeq->bpl_dmabuf = &dmabuf;
+ dmabuf.virt = &bpl;
+ bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow;
+ bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh;
+ 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->cmd_cmpl = xmt_ls_rsp_cmp;
+ nvmewqeq->context_un.axchg = axchg;
+
+ 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->bpl_dmabuf = NULL;
+
+ 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);
+ return 0;
+ }
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6151 NVMEx LS RSP x%x: failed to transmit %d\n",
+ axchg->oxid, rc);
+
+ rc = -ENXIO;
+
+ lpfc_nlp_put(nvmewqeq->ndlp);
+
+out_free_buf:
+ /* Give back resources */
+ lpfc_in_buf_free(phba, &nvmebuf->dbuf);
+
+ /*
+ * 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
+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_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;
+ struct lpfc_sli_ring *pring;
+ unsigned long iflags;
+ int rc;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ int id;
+#endif
+
+ if (phba->pport->load_flag & FC_UNLOADING) {
+ rc = -ENODEV;
+ goto aerr;
+ }
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (ctxp->ts_cmd_nvme) {
+ if (rsp->op == NVMET_FCOP_RSP)
+ ctxp->ts_nvme_status = ktime_get_ns();
+ else
+ ctxp->ts_nvme_data = ktime_get_ns();
+ }
+
+ /* Setup the hdw queue if not already set */
+ if (!ctxp->hdwq)
+ ctxp->hdwq = &phba->sli4_hba.hdwq[rsp->hwqid];
+
+ if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) {
+ id = raw_smp_processor_id();
+ this_cpu_inc(phba->sli4_hba.c_stat->xmt_io);
+ if (rsp->hwqid != id)
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
+ "6705 CPU Check OP: "
+ "cpu %d expect %d\n",
+ id, rsp->hwqid);
+ ctxp->cpu = id; /* Setup cpu for cmpl check */
+ }
+#endif
+
+ /* Sanity check */
+ 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_TRACE_EVENT,
+ "6102 IO oxid 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_TRACE_EVENT,
+ "6152 FCP Drop IO x%x: Prep\n",
+ ctxp->oxid);
+ rc = -ENXIO;
+ goto aerr;
+ }
+
+ nvmewqeq->cmd_cmpl = lpfc_nvmet_xmt_fcp_op_cmp;
+ nvmewqeq->context_un.axchg = ctxp;
+ nvmewqeq->cmd_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);
+
+ 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
+ if (!ctxp->ts_cmd_nvme)
+ 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;
+ }
+
+ if (rc == -EBUSY) {
+ /*
+ * WQ was full, so queue nvmewqeq to be sent after
+ * WQE release CQE
+ */
+ ctxp->flag |= LPFC_NVME_DEFER_WQFULL;
+ wq = ctxp->hdwq->io_wq;
+ pring = wq->pring;
+ spin_lock_irqsave(&pring->ring_lock, iflags);
+ list_add_tail(&nvmewqeq->list, &wq->wqfull_list);
+ wq->q_flag |= HBA_NVMET_WQFULL;
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ atomic_inc(&lpfc_nvmep->defer_wqfull);
+ return 0;
+ }
+
+ /* Give back resources */
+ atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6153 FCP Drop IO x%x: Issue: %d\n",
+ ctxp->oxid, rc);
+
+ ctxp->wqeq->hba_wqidx = 0;
+ nvmewqeq->context_un.axchg = NULL;
+ nvmewqeq->bpl_dmabuf = 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 */
+ if (tport->phba->targetport)
+ complete(tport->tport_unreg_cmp);
+}
+
+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_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;
+
+ if (phba->pport->load_flag & FC_UNLOADING)
+ return;
+
+ if (!ctxp->hdwq)
+ ctxp->hdwq = &phba->sli4_hba.hdwq[0];
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6103 NVMET Abort op: oxid x%x flg x%x ste %d\n",
+ ctxp->oxid, ctxp->flag, ctxp->state);
+
+ lpfc_nvmeio_data(phba, "NVMET FCP ABRT: xri x%x flg x%x ste x%x\n",
+ ctxp->oxid, ctxp->flag, ctxp->state);
+
+ atomic_inc(&lpfc_nvmep->xmt_fcp_abort);
+
+ 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_NVME_XBUSY | LPFC_NVME_ABORT_OP)) {
+ spin_unlock_irqrestore(&ctxp->ctxlock, flags);
+ return;
+ }
+ ctxp->flag |= LPFC_NVME_ABORT_OP;
+
+ 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);
+ wq = ctxp->hdwq->io_wq;
+ lpfc_nvmet_wqfull_flush(phba, wq, ctxp);
+ return;
+ }
+ spin_unlock_irqrestore(&ctxp->ctxlock, flags);
+
+ /* 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_NVME_STE_RCV)
+ lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
+ ctxp->oxid);
+ else
+ lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid,
+ ctxp->oxid);
+}
+
+static void
+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_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_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_NVME_STE_DONE &&
+ ctxp->state != LPFC_NVME_STE_ABORT)
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6413 NVMET release bad state %d %d oxid x%x\n",
+ ctxp->state, ctxp->entry_cnt, ctxp->oxid);
+
+ 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);
+ }
+ spin_unlock_irqrestore(&ctxp->ctxlock, flags);
+
+ lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d abt %d\n", ctxp->oxid,
+ ctxp->state, aborting);
+
+ atomic_inc(&lpfc_nvmep->xmt_fcp_release);
+ ctxp->flag &= ~LPFC_NVME_TNOTIFY;
+
+ if (aborting)
+ return;
+
+ lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
+}
+
+static void
+lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port *tgtport,
+ struct nvmefc_tgt_fcp_req *rsp)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+ 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;
+
+
+ lpfc_nvmeio_data(phba, "NVMET DEFERRCV: xri x%x sz %d CPU %02x\n",
+ ctxp->oxid, ctxp->size, raw_smp_processor_id());
+
+ if (!nvmebuf) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
+ "6425 Defer rcv: no buffer oxid x%x: "
+ "flg %x ste %x\n",
+ ctxp->oxid, ctxp->flag, ctxp->state);
+ return;
+ }
+
+ tgtp = phba->targetport->private;
+ if (tgtp)
+ atomic_inc(&tgtp->rcv_fcp_cmd_defer);
+
+ /* Free the nvmebuf since a new buffer already replaced it */
+ nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf);
+ spin_lock_irqsave(&ctxp->ctxlock, iflag);
+ ctxp->rqb_buffer = NULL;
+ 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.
+ * @rspwqe: Pointer to driver response WQE 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_iocbq *rspwqe)
+{
+ struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
+ __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 = ndlp->phba;
+ struct lpfc_nvmet_tgtport *tgtp;
+
+ if (!phba->targetport || !phba->targetport->private)
+ return;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
+ "6202 NVMET XPT releasing hosthandle x%px "
+ "DID x%x xflags x%x refcnt %d\n",
+ hosthandle, ndlp->nlp_DID, ndlp->fc4_xpt_flags,
+ kref_read(&ndlp->kref));
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ spin_lock_irq(&ndlp->lock);
+ ndlp->fc4_xpt_flags &= ~NLP_XPT_HAS_HH;
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_nlp_put(ndlp);
+ atomic_set(&tgtp->state, 0);
+}
+
+static void
+lpfc_nvmet_discovery_event(struct nvmet_fc_target_port *tgtport)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct lpfc_hba *phba;
+ uint32_t rc;
+
+ tgtp = tgtport->private;
+ phba = tgtp->phba;
+
+ rc = lpfc_issue_els_rscn(phba->pport, 0);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6420 NVMET subsystem change: Notification %s\n",
+ (rc) ? "Failed" : "Sent");
+}
+
+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,
+ .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,
+ .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),
+ .lsrqst_priv_sz = 0,
+};
+
+static void
+__lpfc_nvmet_clean_io_for_cpu(struct lpfc_hba *phba,
+ struct lpfc_nvmet_ctx_info *infop)
+{
+ struct lpfc_nvmet_ctxbuf *ctx_buf, *next_ctx_buf;
+ unsigned long flags;
+
+ spin_lock_irqsave(&infop->nvmet_ctx_list_lock, flags);
+ list_for_each_entry_safe(ctx_buf, next_ctx_buf,
+ &infop->nvmet_ctx_list, list) {
+ spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
+ list_del_init(&ctx_buf->list);
+ spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
+
+ spin_lock(&phba->hbalock);
+ __lpfc_clear_active_sglq(phba, ctx_buf->sglq->sli4_lxritag);
+ spin_unlock(&phba->hbalock);
+
+ ctx_buf->sglq->state = SGL_FREED;
+ ctx_buf->sglq->ndlp = NULL;
+
+ spin_lock(&phba->sli4_hba.sgl_list_lock);
+ list_add_tail(&ctx_buf->sglq->list,
+ &phba->sli4_hba.lpfc_nvmet_sgl_list);
+ spin_unlock(&phba->sli4_hba.sgl_list_lock);
+
+ lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
+ kfree(ctx_buf->context);
+ }
+ spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, flags);
+}
+
+static void
+lpfc_nvmet_cleanup_io_context(struct lpfc_hba *phba)
+{
+ struct lpfc_nvmet_ctx_info *infop;
+ int i, j;
+
+ /* The first context list, MRQ 0 CPU 0 */
+ infop = phba->sli4_hba.nvmet_ctx_info;
+ if (!infop)
+ return;
+
+ /* Cycle the the entire CPU context list for every MRQ */
+ for (i = 0; i < phba->cfg_nvmet_mrq; i++) {
+ for_each_present_cpu(j) {
+ infop = lpfc_get_ctx_list(phba, j, i);
+ __lpfc_nvmet_clean_io_for_cpu(phba, infop);
+ }
+ }
+ kfree(phba->sli4_hba.nvmet_ctx_info);
+ phba->sli4_hba.nvmet_ctx_info = NULL;
+}
+
+static int
+lpfc_nvmet_setup_io_context(struct lpfc_hba *phba)
+{
+ struct lpfc_nvmet_ctxbuf *ctx_buf;
+ struct lpfc_iocbq *nvmewqe;
+ union lpfc_wqe128 *wqe;
+ struct lpfc_nvmet_ctx_info *last_infop;
+ struct lpfc_nvmet_ctx_info *infop;
+ int i, j, idx, cpu;
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
+ "6403 Allocate NVMET resources for %d XRIs\n",
+ phba->sli4_hba.nvmet_xri_cnt);
+
+ phba->sli4_hba.nvmet_ctx_info = kcalloc(
+ phba->sli4_hba.num_possible_cpu * phba->cfg_nvmet_mrq,
+ sizeof(struct lpfc_nvmet_ctx_info), GFP_KERNEL);
+ if (!phba->sli4_hba.nvmet_ctx_info) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6419 Failed allocate memory for "
+ "nvmet context lists\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * Assuming X CPUs in the system, and Y MRQs, allocate some
+ * lpfc_nvmet_ctx_info structures as follows:
+ *
+ * cpu0/mrq0 cpu1/mrq0 ... cpuX/mrq0
+ * cpu0/mrq1 cpu1/mrq1 ... cpuX/mrq1
+ * ...
+ * cpuX/mrqY cpuX/mrqY ... cpuX/mrqY
+ *
+ * Each line represents a MRQ "silo" containing an entry for
+ * every CPU.
+ *
+ * MRQ X is initially assumed to be associated with CPU X, thus
+ * contexts are initially distributed across all MRQs using
+ * the MRQ index (N) as follows cpuN/mrqN. When contexts are
+ * freed, the are freed to the MRQ silo based on the CPU number
+ * of the IO completion. Thus a context that was allocated for MRQ A
+ * whose IO completed on CPU B will be freed to cpuB/mrqA.
+ */
+ for_each_possible_cpu(i) {
+ for (j = 0; j < phba->cfg_nvmet_mrq; j++) {
+ infop = lpfc_get_ctx_list(phba, i, j);
+ INIT_LIST_HEAD(&infop->nvmet_ctx_list);
+ spin_lock_init(&infop->nvmet_ctx_list_lock);
+ infop->nvmet_ctx_list_cnt = 0;
+ }
+ }
+
+ /*
+ * Setup the next CPU context info ptr for each MRQ.
+ * MRQ 0 will cycle thru CPUs 0 - X separately from
+ * MRQ 1 cycling thru CPUs 0 - X, and so on.
+ */
+ for (j = 0; j < phba->cfg_nvmet_mrq; j++) {
+ last_infop = lpfc_get_ctx_list(phba,
+ cpumask_first(cpu_present_mask),
+ j);
+ for (i = phba->sli4_hba.num_possible_cpu - 1; i >= 0; i--) {
+ infop = lpfc_get_ctx_list(phba, i, j);
+ infop->nvmet_ctx_next_cpu = last_infop;
+ last_infop = infop;
+ }
+ }
+
+ /* For all nvmet xris, allocate resources needed to process a
+ * received command on a per xri basis.
+ */
+ idx = 0;
+ cpu = cpumask_first(cpu_present_mask);
+ for (i = 0; i < phba->sli4_hba.nvmet_xri_cnt; i++) {
+ ctx_buf = kzalloc(sizeof(*ctx_buf), GFP_KERNEL);
+ if (!ctx_buf) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6404 Ran out of memory for NVMET\n");
+ return -ENOMEM;
+ }
+
+ ctx_buf->context = kzalloc(sizeof(*ctx_buf->context),
+ GFP_KERNEL);
+ if (!ctx_buf->context) {
+ kfree(ctx_buf);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6405 Ran out of NVMET "
+ "context memory\n");
+ return -ENOMEM;
+ }
+ ctx_buf->context->ctxbuf = ctx_buf;
+ ctx_buf->context->state = LPFC_NVME_STE_FREE;
+
+ ctx_buf->iocbq = lpfc_sli_get_iocbq(phba);
+ if (!ctx_buf->iocbq) {
+ kfree(ctx_buf->context);
+ kfree(ctx_buf);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6406 Ran out of NVMET iocb/WQEs\n");
+ return -ENOMEM;
+ }
+ ctx_buf->iocbq->cmd_flag = LPFC_IO_NVMET;
+ nvmewqe = ctx_buf->iocbq;
+ wqe = &nvmewqe->wqe;
+
+ /* Initialize WQE */
+ memset(wqe, 0, sizeof(union lpfc_wqe));
+
+ ctx_buf->iocbq->cmd_dmabuf = NULL;
+ spin_lock(&phba->sli4_hba.sgl_list_lock);
+ ctx_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, ctx_buf->iocbq);
+ spin_unlock(&phba->sli4_hba.sgl_list_lock);
+ if (!ctx_buf->sglq) {
+ lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
+ kfree(ctx_buf->context);
+ kfree(ctx_buf);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6407 Ran out of NVMET XRIs\n");
+ return -ENOMEM;
+ }
+ INIT_WORK(&ctx_buf->defer_work, lpfc_nvmet_fcp_rqst_defer_work);
+
+ /*
+ * Add ctx to MRQidx context list. Our initial assumption
+ * is MRQidx will be associated with CPUidx. This association
+ * can change on the fly.
+ */
+ infop = lpfc_get_ctx_list(phba, cpu, idx);
+ spin_lock(&infop->nvmet_ctx_list_lock);
+ list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list);
+ infop->nvmet_ctx_list_cnt++;
+ spin_unlock(&infop->nvmet_ctx_list_lock);
+
+ /* Spread ctx structures evenly across all MRQs */
+ idx++;
+ if (idx >= phba->cfg_nvmet_mrq) {
+ idx = 0;
+ cpu = cpumask_first(cpu_present_mask);
+ continue;
+ }
+ cpu = cpumask_next(cpu, cpu_present_mask);
+ if (cpu == nr_cpu_ids)
+ cpu = cpumask_first(cpu_present_mask);
+
+ }
+
+ for_each_present_cpu(i) {
+ for (j = 0; j < phba->cfg_nvmet_mrq; j++) {
+ infop = lpfc_get_ctx_list(phba, i, j);
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
+ "6408 TOTAL NVMET ctx for CPU %d "
+ "MRQ %d: cnt %d nextcpu x%px\n",
+ i, j, infop->nvmet_ctx_list_cnt,
+ infop->nvmet_ctx_next_cpu);
+ }
+ }
+ return 0;
+}
+
+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;
+
+ if (phba->targetport)
+ return 0;
+
+ error = lpfc_nvmet_setup_io_context(phba);
+ if (error)
+ return error;
+
+ 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;
+
+ /* We need to tell the transport layer + 1 because it takes page
+ * alignment into account. When space for the SGL is allocated we
+ * allocate + 3, one for cmd, one for rsp and one for this alignment
+ */
+ lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1;
+ lpfc_tgttemplate.max_hw_queues = phba->cfg_hdw_queue;
+ lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP;
+
+#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
+ error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate,
+ &phba->pcidev->dev,
+ &phba->targetport);
+#else
+ error = -ENOENT;
+#endif
+ if (error) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6025 Cannot register NVME targetport x%x: "
+ "portnm %llx nodenm %llx segs %d qs %d\n",
+ error,
+ pinfo.port_name, pinfo.node_name,
+ lpfc_tgttemplate.max_sgl_segments,
+ lpfc_tgttemplate.max_hw_queues);
+ phba->targetport = NULL;
+ phba->nvmet_support = 0;
+
+ lpfc_nvmet_cleanup_io_context(phba);
+
+ } 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: x%px, private x%px "
+ "portnm %llx nodenm %llx segs %d qs %d\n",
+ phba->targetport, tgtp,
+ pinfo.port_name, pinfo.node_name,
+ lpfc_tgttemplate.max_sgl_segments,
+ lpfc_tgttemplate.max_hw_queues);
+
+ 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_abort_cmpl, 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_xb_set, 0);
+ atomic_set(&tgtp->xmt_ls_rsp_aborted, 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_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_release, 0);
+ atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0);
+ atomic_set(&tgtp->xmt_fcp_rsp_error, 0);
+ atomic_set(&tgtp->xmt_fcp_rsp_xb_set, 0);
+ atomic_set(&tgtp->xmt_fcp_rsp_aborted, 0);
+ atomic_set(&tgtp->xmt_fcp_rsp_drop, 0);
+ atomic_set(&tgtp->xmt_fcp_xri_abort_cqe, 0);
+ atomic_set(&tgtp->xmt_fcp_abort, 0);
+ atomic_set(&tgtp->xmt_fcp_abort_cmpl, 0);
+ atomic_set(&tgtp->xmt_abort_unsol, 0);
+ atomic_set(&tgtp->xmt_abort_sol, 0);
+ atomic_set(&tgtp->xmt_abort_rsp, 0);
+ atomic_set(&tgtp->xmt_abort_rsp_error, 0);
+ atomic_set(&tgtp->defer_ctx, 0);
+ atomic_set(&tgtp->defer_fod, 0);
+ atomic_set(&tgtp->defer_wqfull, 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 x%px 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)
+{
+#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_async_xchg_ctx *ctxp, *next_ctxp;
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct nvmefc_tgt_fcp_req *req = NULL;
+ 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;
+
+ if (phba->targetport) {
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ atomic_inc(&tgtp->xmt_fcp_xri_abort_cqe);
+ }
+
+ spin_lock_irqsave(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag);
+ list_for_each_entry_safe(ctxp, next_ctxp,
+ &phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
+ list) {
+ if (ctxp->ctxbuf->sglq->sli4_xritag != xri)
+ continue;
+
+ spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock,
+ iflag);
+
+ spin_lock_irqsave(&ctxp->ctxlock, iflag);
+ /* Check if we already received a free context call
+ * and we have completed processing an abort situation.
+ */
+ if (ctxp->flag & LPFC_NVME_CTX_RLS &&
+ !(ctxp->flag & LPFC_NVME_ABORT_OP)) {
+ 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_NVME_XBUSY;
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
+
+ rrq_empty = list_empty(&phba->active_rrq_list);
+ ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
+ if (ndlp &&
+ (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
+ ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
+ lpfc_set_rrq_active(phba, ndlp,
+ ctxp->ctxbuf->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 oxid x%x flg x%x (%x)\n",
+ ctxp->oxid, ctxp->flag, released);
+ if (released)
+ lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
+
+ if (rrq_empty)
+ lpfc_worker_wake_up(phba);
+ return;
+ }
+ spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag);
+ ctxp = lpfc_nvmet_get_ctx_for_xri(phba, xri);
+ if (ctxp) {
+ /*
+ * Abort already done by FW, so BA_ACC sent.
+ * However, the transport may be unaware.
+ */
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6323 NVMET Rcv ABTS xri x%x ctxp state x%x "
+ "flag x%x oxid x%x rxid x%x\n",
+ xri, ctxp->state, ctxp->flag, ctxp->oxid,
+ rxid);
+
+ spin_lock_irqsave(&ctxp->ctxlock, iflag);
+ 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->hdlrctx.fcp_req;
+ if (req)
+ nvmet_fc_rcv_fcp_abort(phba->targetport, req);
+ }
+#endif
+}
+
+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_async_xchg_ctx *ctxp, *next_ctxp;
+ struct nvmefc_tgt_fcp_req *rsp;
+ uint32_t sid;
+ uint16_t oxid, xri;
+ unsigned long iflag = 0;
+
+ sid = sli4_sid_from_fc_hdr(fc_hdr);
+ oxid = be16_to_cpu(fc_hdr->fh_ox_id);
+
+ spin_lock_irqsave(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag);
+ list_for_each_entry_safe(ctxp, next_ctxp,
+ &phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
+ list) {
+ if (ctxp->oxid != oxid || ctxp->sid != sid)
+ continue;
+
+ xri = ctxp->ctxbuf->sglq->sli4_xritag;
+
+ spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock,
+ iflag);
+ spin_lock_irqsave(&ctxp->ctxlock, iflag);
+ ctxp->flag |= LPFC_NVME_ABTS_RCV;
+ 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);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6319 NVMET Rcv ABTS:acc xri x%x\n", xri);
+
+ rsp = &ctxp->hdlrctx.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_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag);
+ /* check the wait list */
+ if (phba->sli4_hba.nvmet_io_wait_cnt) {
+ struct rqb_dmabuf *nvmebuf;
+ struct fc_frame_header *fc_hdr_tmp;
+ u32 sid_tmp;
+ u16 oxid_tmp;
+ bool found = false;
+
+ spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
+
+ /* match by oxid and s_id */
+ list_for_each_entry(nvmebuf,
+ &phba->sli4_hba.lpfc_nvmet_io_wait_list,
+ hbuf.list) {
+ fc_hdr_tmp = (struct fc_frame_header *)
+ (nvmebuf->hbuf.virt);
+ oxid_tmp = be16_to_cpu(fc_hdr_tmp->fh_ox_id);
+ sid_tmp = sli4_sid_from_fc_hdr(fc_hdr_tmp);
+ if (oxid_tmp != oxid || sid_tmp != sid)
+ continue;
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6321 NVMET Rcv ABTS oxid x%x from x%x "
+ "is waiting for a ctxp\n",
+ oxid, sid);
+
+ list_del_init(&nvmebuf->hbuf.list);
+ phba->sli4_hba.nvmet_io_wait_cnt--;
+ found = true;
+ break;
+ }
+ spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock,
+ iflag);
+
+ /* free buffer since already posted a new DMA buffer to RQ */
+ if (found) {
+ nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf);
+ /* Respond with BA_ACC accordingly */
+ lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1);
+ return 0;
+ }
+ }
+
+ /* check active list */
+ ctxp = lpfc_nvmet_get_ctx_for_oxid(phba, oxid, sid);
+ if (ctxp) {
+ xri = ctxp->ctxbuf->sglq->sli4_xritag;
+
+ spin_lock_irqsave(&ctxp->ctxlock, iflag);
+ ctxp->flag |= (LPFC_NVME_ABTS_RCV | LPFC_NVME_ABORT_OP);
+ 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);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6322 NVMET Rcv ABTS:acc oxid x%x xri x%x "
+ "flag x%x state x%x\n",
+ ctxp->oxid, xri, ctxp->flag, ctxp->state);
+
+ if (ctxp->flag & LPFC_NVME_TNOTIFY) {
+ /* Notify the transport */
+ nvmet_fc_rcv_fcp_abort(phba->targetport,
+ &ctxp->hdlrctx.fcp_req);
+ } else {
+ cancel_work_sync(&ctxp->ctxbuf->defer_work);
+ spin_lock_irqsave(&ctxp->ctxlock, iflag);
+ lpfc_nvmet_defer_release(phba, ctxp);
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
+ }
+ lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid,
+ ctxp->oxid);
+
+ lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1);
+ return 0;
+ }
+
+ lpfc_nvmeio_data(phba, "NVMET ABTS RCV: oxid x%x CPU %02x rjt %d\n",
+ oxid, raw_smp_processor_id(), 1);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6320 NVMET Rcv ABTS:rjt oxid x%x\n", oxid);
+
+ /* Respond with BA_RJT accordingly */
+ lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 0);
+#endif
+ return 0;
+}
+
+static void
+lpfc_nvmet_wqfull_flush(struct lpfc_hba *phba, struct lpfc_queue *wq,
+ struct lpfc_async_xchg_ctx *ctxp)
+{
+ struct lpfc_sli_ring *pring;
+ struct lpfc_iocbq *nvmewqeq;
+ struct lpfc_iocbq *next_nvmewqeq;
+ unsigned long iflags;
+ struct lpfc_wcqe_complete wcqe;
+ struct lpfc_wcqe_complete *wcqep;
+
+ pring = wq->pring;
+ wcqep = &wcqe;
+
+ /* Fake an ABORT error code back to cmpl routine */
+ memset(wcqep, 0, sizeof(struct lpfc_wcqe_complete));
+ bf_set(lpfc_wcqe_c_status, wcqep, IOSTAT_LOCAL_REJECT);
+ wcqep->parameter = IOERR_ABORT_REQUESTED;
+
+ spin_lock_irqsave(&pring->ring_lock, iflags);
+ list_for_each_entry_safe(nvmewqeq, next_nvmewqeq,
+ &wq->wqfull_list, list) {
+ if (ctxp) {
+ /* Checking for a specific IO to flush */
+ if (nvmewqeq->context_un.axchg == ctxp) {
+ list_del(&nvmewqeq->list);
+ spin_unlock_irqrestore(&pring->ring_lock,
+ iflags);
+ memcpy(&nvmewqeq->wcqe_cmpl, wcqep,
+ sizeof(*wcqep));
+ lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq,
+ nvmewqeq);
+ return;
+ }
+ continue;
+ } else {
+ /* Flush all IOs */
+ list_del(&nvmewqeq->list);
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ memcpy(&nvmewqeq->wcqe_cmpl, wcqep, sizeof(*wcqep));
+ lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, nvmewqeq);
+ spin_lock_irqsave(&pring->ring_lock, iflags);
+ }
+ }
+ if (!ctxp)
+ wq->q_flag &= ~HBA_NVMET_WQFULL;
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+}
+
+void
+lpfc_nvmet_wqfull_process(struct lpfc_hba *phba,
+ struct lpfc_queue *wq)
+{
+#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
+ struct lpfc_sli_ring *pring;
+ struct lpfc_iocbq *nvmewqeq;
+ struct lpfc_async_xchg_ctx *ctxp;
+ unsigned long iflags;
+ int rc;
+
+ /*
+ * Some WQE slots are available, so try to re-issue anything
+ * on the WQ wqfull_list.
+ */
+ pring = wq->pring;
+ spin_lock_irqsave(&pring->ring_lock, iflags);
+ while (!list_empty(&wq->wqfull_list)) {
+ list_remove_head(&wq->wqfull_list, nvmewqeq, struct lpfc_iocbq,
+ list);
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ ctxp = nvmewqeq->context_un.axchg;
+ rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq);
+ spin_lock_irqsave(&pring->ring_lock, iflags);
+ if (rc == -EBUSY) {
+ /* WQ was full again, so put it back on the list */
+ list_add(&nvmewqeq->list, &wq->wqfull_list);
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ return;
+ }
+ if (rc == WQE_SUCCESS) {
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (ctxp->ts_cmd_nvme) {
+ if (ctxp->hdlrctx.fcp_req.op == NVMET_FCOP_RSP)
+ ctxp->ts_status_wqput = ktime_get_ns();
+ else
+ ctxp->ts_data_wqput = ktime_get_ns();
+ }
+#endif
+ } else {
+ WARN_ON(rc);
+ }
+ }
+ wq->q_flag &= ~HBA_NVMET_WQFULL;
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+
+#endif
+}
+
+void
+lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba)
+{
+#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct lpfc_queue *wq;
+ uint32_t qidx;
+ DECLARE_COMPLETION_ONSTACK(tport_unreg_cmp);
+
+ if (phba->nvmet_support == 0)
+ return;
+ if (phba->targetport) {
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
+ wq = phba->sli4_hba.hdwq[qidx].io_wq;
+ lpfc_nvmet_wqfull_flush(phba, wq, NULL);
+ }
+ tgtp->tport_unreg_cmp = &tport_unreg_cmp;
+ nvmet_fc_unregister_targetport(phba->targetport);
+ if (!wait_for_completion_timeout(&tport_unreg_cmp,
+ msecs_to_jiffies(LPFC_NVMET_WAIT_TMO)))
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6179 Unreg targetport x%px timeout "
+ "reached.\n", phba->targetport);
+ lpfc_nvmet_cleanup_io_context(phba);
+ }
+ phba->targetport = NULL;
+#endif
+}
+
+/**
+ * lpfc_nvmet_handle_lsreq - Process an 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 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 = phba->targetport->private;
+ uint32_t *payload = axchg->payload;
+ int rc;
+
+ atomic_inc(&tgtp->rcv_ls_req_in);
+
+ /*
+ * Driver passes the ndlp as the hosthandle argument allowing
+ * the transport to generate LS requests for any associateions
+ * that are created.
+ */
+ 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", axchg->size, rc,
+ *payload, *(payload+1), *(payload+2),
+ *(payload+3), *(payload+4), *(payload+5));
+
+ if (!rc) {
+ atomic_inc(&tgtp->rcv_ls_req_out);
+ return 0;
+ }
+
+ atomic_inc(&tgtp->rcv_ls_req_drop);
+#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_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;
+ uint32_t *payload, qno;
+ uint32_t rc;
+ unsigned long iflags;
+
+ if (!nvmebuf) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6159 process_rcv_fcp_req, nvmebuf is NULL, "
+ "oxid: x%x flg: x%x state: x%x\n",
+ ctxp->oxid, ctxp->flag, ctxp->state);
+ spin_lock_irqsave(&ctxp->ctxlock, iflags);
+ lpfc_nvmet_defer_release(phba, ctxp);
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflags);
+ lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
+ ctxp->oxid);
+ return;
+ }
+
+ if (ctxp->flag & LPFC_NVME_ABTS_RCV) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6324 IO oxid x%x aborted\n",
+ ctxp->oxid);
+ return;
+ }
+
+ payload = (uint32_t *)(nvmebuf->dbuf.virt);
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ ctxp->flag |= LPFC_NVME_TNOTIFY;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (ctxp->ts_isr_cmd)
+ ctxp->ts_cmd_nvme = ktime_get_ns();
+#endif
+ /*
+ * 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.
+ * When we return from nvmet_fc_rcv_fcp_req, all relevant info
+ * the NVME command / FC header is stored.
+ * A buffer has already been reposted for this IO, so just free
+ * the nvmebuf.
+ */
+ 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_NVME_CTX_REUSE_WQ) ||
+ (nvmebuf != ctxp->rqb_buffer)) {
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflags);
+ return;
+ }
+ ctxp->rqb_buffer = NULL;
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflags);
+ lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */
+ return;
+ }
+
+ /* Processing of FCP command is deferred */
+ if (rc == -EOVERFLOW) {
+ lpfc_nvmeio_data(phba, "NVMET RCV BUSY: xri x%x sz %d "
+ "from %06x\n",
+ ctxp->oxid, ctxp->size, ctxp->sid);
+ atomic_inc(&tgtp->rcv_fcp_cmd_out);
+ atomic_inc(&tgtp->defer_fod);
+ spin_lock_irqsave(&ctxp->ctxlock, iflags);
+ if (ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) {
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflags);
+ return;
+ }
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflags);
+ /*
+ * Post a replacement DMA buffer to RQ and defer
+ * freeing rcv buffer till .defer_rcv callback
+ */
+ qno = nvmebuf->idx;
+ lpfc_post_rq_buffer(
+ phba, phba->sli4_hba.nvmet_mrq_hdr[qno],
+ phba->sli4_hba.nvmet_mrq_data[qno], 1, qno);
+ return;
+ }
+ ctxp->flag &= ~LPFC_NVME_TNOTIFY;
+ atomic_inc(&tgtp->rcv_fcp_cmd_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2582 FCP Drop IO x%x: err x%x: x%x x%x x%x\n",
+ ctxp->oxid, rc,
+ atomic_read(&tgtp->rcv_fcp_cmd_in),
+ atomic_read(&tgtp->rcv_fcp_cmd_out),
+ atomic_read(&tgtp->xmt_fcp_release));
+ lpfc_nvmeio_data(phba, "NVMET FCP DROP: xri x%x sz %d from %06x\n",
+ ctxp->oxid, ctxp->size, ctxp->sid);
+ spin_lock_irqsave(&ctxp->ctxlock, iflags);
+ lpfc_nvmet_defer_release(phba, ctxp);
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflags);
+ lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid);
+#endif
+}
+
+static void
+lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *work)
+{
+#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
+ struct lpfc_nvmet_ctxbuf *ctx_buf =
+ container_of(work, struct lpfc_nvmet_ctxbuf, defer_work);
+
+ lpfc_nvmet_process_rcv_fcp_req(ctx_buf);
+#endif
+}
+
+static struct lpfc_nvmet_ctxbuf *
+lpfc_nvmet_replenish_context(struct lpfc_hba *phba,
+ struct lpfc_nvmet_ctx_info *current_infop)
+{
+#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
+ struct lpfc_nvmet_ctxbuf *ctx_buf = NULL;
+ struct lpfc_nvmet_ctx_info *get_infop;
+ int i;
+
+ /*
+ * The current_infop for the MRQ a NVME command IU was received
+ * on is empty. Our goal is to replenish this MRQs context
+ * list from a another CPUs.
+ *
+ * First we need to pick a context list to start looking on.
+ * nvmet_ctx_start_cpu has available context the last time
+ * we needed to replenish this CPU where nvmet_ctx_next_cpu
+ * is just the next sequential CPU for this MRQ.
+ */
+ if (current_infop->nvmet_ctx_start_cpu)
+ get_infop = current_infop->nvmet_ctx_start_cpu;
+ else
+ get_infop = current_infop->nvmet_ctx_next_cpu;
+
+ for (i = 0; i < phba->sli4_hba.num_possible_cpu; i++) {
+ if (get_infop == current_infop) {
+ get_infop = get_infop->nvmet_ctx_next_cpu;
+ continue;
+ }
+ spin_lock(&get_infop->nvmet_ctx_list_lock);
+
+ /* Just take the entire context list, if there are any */
+ if (get_infop->nvmet_ctx_list_cnt) {
+ list_splice_init(&get_infop->nvmet_ctx_list,
+ &current_infop->nvmet_ctx_list);
+ current_infop->nvmet_ctx_list_cnt =
+ get_infop->nvmet_ctx_list_cnt - 1;
+ get_infop->nvmet_ctx_list_cnt = 0;
+ spin_unlock(&get_infop->nvmet_ctx_list_lock);
+
+ current_infop->nvmet_ctx_start_cpu = get_infop;
+ list_remove_head(&current_infop->nvmet_ctx_list,
+ ctx_buf, struct lpfc_nvmet_ctxbuf,
+ list);
+ return ctx_buf;
+ }
+
+ /* Otherwise, move on to the next CPU for this MRQ */
+ spin_unlock(&get_infop->nvmet_ctx_list_lock);
+ get_infop = get_infop->nvmet_ctx_next_cpu;
+ }
+
+#endif
+ /* Nothing found, all contexts for the MRQ are in-flight */
+ return NULL;
+}
+
+/**
+ * lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer
+ * @phba: pointer to lpfc hba data structure.
+ * @idx: relative index of MRQ vector
+ * @nvmebuf: pointer to lpfc nvme command HBQ data structure.
+ * @isr_timestamp: in jiffies.
+ * @cqflag: cq processing information regarding workload.
+ *
+ * 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,
+ uint32_t idx,
+ struct rqb_dmabuf *nvmebuf,
+ uint64_t isr_timestamp,
+ uint8_t cqflag)
+{
+ struct lpfc_async_xchg_ctx *ctxp;
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct fc_frame_header *fc_hdr;
+ struct lpfc_nvmet_ctxbuf *ctx_buf;
+ struct lpfc_nvmet_ctx_info *current_infop;
+ uint32_t size, oxid, sid, qno;
+ unsigned long iflag;
+ int current_cpu;
+
+ if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
+ return;
+
+ ctx_buf = NULL;
+ if (!nvmebuf || !phba->targetport) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6157 NVMET FCP Drop IO\n");
+ if (nvmebuf)
+ lpfc_rq_buf_free(phba, &nvmebuf->hbuf);
+ return;
+ }
+
+ /*
+ * Get a pointer to the context list for this MRQ based on
+ * the CPU this MRQ IRQ is associated with. If the CPU association
+ * changes from our initial assumption, the context list could
+ * be empty, thus it would need to be replenished with the
+ * context list from another CPU for this MRQ.
+ */
+ current_cpu = raw_smp_processor_id();
+ current_infop = lpfc_get_ctx_list(phba, current_cpu, idx);
+ spin_lock_irqsave(&current_infop->nvmet_ctx_list_lock, iflag);
+ if (current_infop->nvmet_ctx_list_cnt) {
+ list_remove_head(&current_infop->nvmet_ctx_list,
+ ctx_buf, struct lpfc_nvmet_ctxbuf, list);
+ current_infop->nvmet_ctx_list_cnt--;
+ } else {
+ ctx_buf = lpfc_nvmet_replenish_context(phba, current_infop);
+ }
+ spin_unlock_irqrestore(&current_infop->nvmet_ctx_list_lock, iflag);
+
+ fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
+ oxid = be16_to_cpu(fc_hdr->fh_ox_id);
+ size = nvmebuf->bytes_recv;
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) {
+ this_cpu_inc(phba->sli4_hba.c_stat->rcv_io);
+ if (idx != current_cpu)
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
+ "6703 CPU Check rcv: "
+ "cpu %d expect %d\n",
+ current_cpu, idx);
+ }
+#endif
+
+ lpfc_nvmeio_data(phba, "NVMET FCP RCV: xri x%x sz %d CPU %02x\n",
+ oxid, size, raw_smp_processor_id());
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+
+ if (!ctx_buf) {
+ /* Queue this NVME IO to process later */
+ spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
+ list_add_tail(&nvmebuf->hbuf.list,
+ &phba->sli4_hba.lpfc_nvmet_io_wait_list);
+ phba->sli4_hba.nvmet_io_wait_cnt++;
+ phba->sli4_hba.nvmet_io_wait_total++;
+ spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock,
+ iflag);
+
+ /* Post a brand new DMA buffer to RQ */
+ qno = nvmebuf->idx;
+ lpfc_post_rq_buffer(
+ phba, phba->sli4_hba.nvmet_mrq_hdr[qno],
+ phba->sli4_hba.nvmet_mrq_data[qno], 1, qno);
+
+ atomic_inc(&tgtp->defer_ctx);
+ return;
+ }
+
+ sid = sli4_sid_from_fc_hdr(fc_hdr);
+
+ 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_NVME_STE_FREE) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6414 NVMET Context corrupt %d %d oxid x%x\n",
+ ctxp->state, ctxp->entry_cnt, ctxp->oxid);
+ }
+ ctxp->wqeq = NULL;
+ ctxp->offset = 0;
+ ctxp->phba = phba;
+ ctxp->size = size;
+ ctxp->oxid = oxid;
+ ctxp->sid = sid;
+ ctxp->idx = idx;
+ ctxp->state = LPFC_NVME_STE_RCV;
+ ctxp->entry_cnt = 1;
+ ctxp->flag = 0;
+ ctxp->ctxbuf = ctx_buf;
+ ctxp->rqb_buffer = (void *)nvmebuf;
+ ctxp->hdwq = NULL;
+ spin_lock_init(&ctxp->ctxlock);
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (isr_timestamp)
+ ctxp->ts_isr_cmd = isr_timestamp;
+ ctxp->ts_cmd_nvme = 0;
+ 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;
+#endif
+
+ atomic_inc(&tgtp->rcv_fcp_cmd_in);
+ /* check for cq processing load */
+ if (!cqflag) {
+ lpfc_nvmet_process_rcv_fcp_req(ctx_buf);
+ return;
+ }
+
+ if (!queue_work(phba->wq, &ctx_buf->defer_work)) {
+ atomic_inc(&tgtp->rcv_fcp_cmd_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6325 Unable to queue work for oxid x%x. "
+ "FCP Drop IO [x%x x%x x%x]\n",
+ ctxp->oxid,
+ atomic_read(&tgtp->rcv_fcp_cmd_in),
+ atomic_read(&tgtp->rcv_fcp_cmd_out),
+ atomic_read(&tgtp->xmt_fcp_release));
+
+ spin_lock_irqsave(&ctxp->ctxlock, iflag);
+ lpfc_nvmet_defer_release(phba, ctxp);
+ spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
+ lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid);
+ }
+}
+
+/**
+ * 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
+ * @nvmebuf: pointer to received nvme data structure.
+ * @isr_timestamp: in jiffies.
+ * @cqflag: cq processing information regarding workload.
+ *
+ * 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,
+ uint32_t idx,
+ struct rqb_dmabuf *nvmebuf,
+ uint64_t isr_timestamp,
+ uint8_t cqflag)
+{
+ if (!nvmebuf) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3167 NVMET FCP Drop IO\n");
+ return;
+ }
+ if (phba->nvmet_support == 0) {
+ lpfc_rq_buf_free(phba, &nvmebuf->hbuf);
+ return;
+ }
+ lpfc_nvmet_unsol_fcp_buffer(phba, idx, nvmebuf, isr_timestamp, cqflag);
+}
+
+/**
+ * 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_async_xchg_ctx *ctxp,
+ dma_addr_t rspbuf, uint16_t rspsize)
+{
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_iocbq *nvmewqe;
+ union lpfc_wqe128 *wqe;
+
+ if (!lpfc_is_link_up(phba)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6104 NVMET prep LS wqe: link err: "
+ "NPORT x%x oxid:x%x ste %d\n",
+ ctxp->sid, ctxp->oxid, ctxp->state);
+ return NULL;
+ }
+
+ /* Allocate buffer for command wqe */
+ nvmewqe = lpfc_sli_get_iocbq(phba);
+ if (nvmewqe == NULL) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6105 NVMET prep LS wqe: No WQE: "
+ "NPORT x%x oxid x%x ste %d\n",
+ ctxp->sid, ctxp->oxid, ctxp->state);
+ return NULL;
+ }
+
+ ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
+ if (!ndlp ||
+ ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+ (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6106 NVMET prep LS wqe: No ndlp: "
+ "NPORT x%x oxid x%x ste %d\n",
+ ctxp->sid, ctxp->oxid, ctxp->state);
+ goto nvme_wqe_free_wqeq_exit;
+ }
+ ctxp->wqeq = nvmewqe;
+
+ /* prevent preparing wqe with NULL ndlp reference */
+ nvmewqe->ndlp = lpfc_nlp_get(ndlp);
+ if (!nvmewqe->ndlp)
+ goto nvme_wqe_free_wqeq_exit;
+ nvmewqe->context_un.axchg = 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->cmd_flag |= LPFC_IO_NVME_LS;
+
+ /* Xmit NVMET response to remote NPORT <did> */
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
+ "6039 Xmit NVMET 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->context_un.axchg = NULL;
+ nvmewqe->ndlp = NULL;
+ nvmewqe->bpl_dmabuf = NULL;
+ lpfc_sli_release_iocbq(phba, nvmewqe);
+ return NULL;
+}
+
+
+static struct lpfc_iocbq *
+lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
+ struct lpfc_async_xchg_ctx *ctxp)
+{
+ struct nvmefc_tgt_fcp_req *rsp = &ctxp->hdlrctx.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;
+ struct ulp_bde64 *bde;
+ dma_addr_t physaddr;
+ int i, cnt, nsegs;
+ bool use_pbde = false;
+ int xc = 1;
+
+ if (!lpfc_is_link_up(phba)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6107 NVMET prep FCP wqe: link err:"
+ "NPORT x%x oxid x%x ste %d\n",
+ ctxp->sid, ctxp->oxid, ctxp->state);
+ return NULL;
+ }
+
+ ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
+ if (!ndlp ||
+ ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+ (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6108 NVMET prep FCP wqe: no ndlp: "
+ "NPORT x%x oxid x%x ste %d\n",
+ ctxp->sid, ctxp->oxid, ctxp->state);
+ return NULL;
+ }
+
+ if (rsp->sg_cnt > lpfc_tgttemplate.max_sgl_segments) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6109 NVMET prep FCP wqe: seg cnt err: "
+ "NPORT x%x oxid x%x ste %d cnt %d\n",
+ ctxp->sid, ctxp->oxid, ctxp->state,
+ phba->cfg_nvme_seg_cnt);
+ return NULL;
+ }
+ nsegs = rsp->sg_cnt;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ nvmewqe = ctxp->wqeq;
+ if (nvmewqe == NULL) {
+ /* Allocate buffer for command wqe */
+ nvmewqe = ctxp->ctxbuf->iocbq;
+ if (nvmewqe == NULL) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6110 NVMET prep FCP wqe: No "
+ "WQE: NPORT x%x oxid x%x ste %d\n",
+ ctxp->sid, ctxp->oxid, ctxp->state);
+ 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_NVME_STE_RCV) &&
+ (ctxp->entry_cnt == 1)) ||
+ (ctxp->state == LPFC_NVME_STE_DATA)) {
+ wqe = &nvmewqe->wqe;
+ } else {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6111 Wrong state NVMET FCP: %d cnt %d\n",
+ ctxp->state, ctxp->entry_cnt);
+ return NULL;
+ }
+
+ sgl = (struct sli4_sge *)ctxp->ctxbuf->sglq->sgl;
+ switch (rsp->op) {
+ case NVMET_FCOP_READDATA:
+ case NVMET_FCOP_READDATA_RSP:
+ /* From the tsend template, initialize words 7 - 11 */
+ memcpy(&wqe->words[7],
+ &lpfc_tsend_cmd_template.words[7],
+ sizeof(uint32_t) * 5);
+
+ /* 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 */
+ wqe->fcp_tsend.reserved = 0;
+
+ /* 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 - set ar later */
+
+ /* 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 - set wqes later, in template xc=1 */
+ if (!xc)
+ bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 0);
+
+ /* 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);
+
+ /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */
+
+ if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) {
+ if (ndlp->nlp_flag & NLP_SUPPRESS_RSP)
+ bf_set(wqe_sup,
+ &wqe->fcp_tsend.wqe_com, 1);
+ } else {
+ 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);
+
+ /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */
+ bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0);
+ }
+ break;
+
+ case NVMET_FCOP_WRITEDATA:
+ /* From the treceive template, initialize words 3 - 11 */
+ memcpy(&wqe->words[3],
+ &lpfc_treceive_cmd_template.words[3],
+ sizeof(uint32_t) * 9);
+
+ /* Words 0 - 2 : First SGE is skipped, set invalid BDE type */
+ wqe->fcp_treceive.bde.tus.f.bdeFlags = LPFC_SGE_TYPE_SKIP;
+ wqe->fcp_treceive.bde.tus.f.bdeSize = 0;
+ wqe->fcp_treceive.bde.addrLow = 0;
+ wqe->fcp_treceive.bde.addrHigh = 0;
+
+ /* Word 4 */
+ wqe->fcp_treceive.relative_offset = ctxp->offset;
+
+ /* 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 */
+
+ /* 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 - in template xc=1 */
+ if (!xc)
+ bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, 0);
+
+ /* Word 11 - check for pbde */
+ if (nsegs == 1 && phba->cfg_enable_pbde) {
+ use_pbde = true;
+ /* Word 11 - PBDE bit already preset by template */
+ } else {
+ /* Overwrite default template setting */
+ bf_set(wqe_pbde, &wqe->fcp_treceive.wqe_com, 0);
+ }
+
+ /* 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++;
+ atomic_inc(&tgtp->xmt_fcp_write);
+ break;
+
+ case NVMET_FCOP_RSP:
+ /* From the treceive template, initialize words 4 - 11 */
+ memcpy(&wqe->words[4],
+ &lpfc_trsp_cmd_template.words[4],
+ sizeof(uint32_t) * 8);
+
+ /* 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 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 */
+
+ /* 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 */
+ if (xc)
+ bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 1);
+
+ /* Word 11 */
+ /* In template wqes=0 irsp=0 irsplen=0 - good response */
+ if (rsp->rsplen != LPFC_NVMET_SUCCESS_LEN) {
+ /* Bad response - embed it */
+ 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);
+ }
+
+ /* Word 12 */
+ wqe->fcp_trsp.rsvd_12_15[0] = 0;
+
+ /* Use rspbuf, NOT sg list */
+ nsegs = 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->ndlp = ndlp;
+
+ for_each_sg(rsp->sg, sgel, nsegs, 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;
+ }
+
+ bde = (struct ulp_bde64 *)&wqe->words[13];
+ if (use_pbde) {
+ /* decrement sgl ptr backwards once to first data sge */
+ sgl--;
+
+ /* Words 13-15 (PBDE) */
+ bde->addrLow = sgl->addr_lo;
+ bde->addrHigh = sgl->addr_hi;
+ bde->tus.f.bdeSize = le32_to_cpu(sgl->sge_len);
+ bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ bde->tus.w = cpu_to_le32(bde->tus.w);
+ } else {
+ memset(bde, 0, sizeof(struct ulp_bde64));
+ }
+ ctxp->state = LPFC_NVME_STE_DATA;
+ ctxp->entry_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.
+ * @rspwqe: Pointer to driver response WQE 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_iocbq *rspwqe)
+{
+ struct lpfc_async_xchg_ctx *ctxp;
+ struct lpfc_nvmet_tgtport *tgtp;
+ uint32_t result;
+ unsigned long flags;
+ bool released = false;
+ struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
+
+ ctxp = cmdwqe->context_un.axchg;
+ result = wcqe->parameter;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ if (ctxp->flag & LPFC_NVME_ABORT_OP)
+ atomic_inc(&tgtp->xmt_fcp_abort_cmpl);
+
+ spin_lock_irqsave(&ctxp->ctxlock, flags);
+ 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_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_NVME_ABORT_OP;
+ spin_unlock_irqrestore(&ctxp->ctxlock, flags);
+ atomic_inc(&tgtp->xmt_abort_rsp);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6165 ABORT cmpl: oxid 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);
+
+ cmdwqe->rsp_dmabuf = NULL;
+ cmdwqe->bpl_dmabuf = NULL;
+ /*
+ * if transport has released ctx, then can reuse it. Otherwise,
+ * will be recycled by transport release call.
+ */
+ if (released)
+ lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
+
+ /* This is the iocbq for the abort, not the command */
+ lpfc_sli_release_iocbq(phba, cmdwqe);
+
+ /* Since iaab/iaar are NOT set, there is no work left.
+ * For LPFC_NVME_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.
+ * @rspwqe: Pointer to driver response WQE 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_iocbq *rspwqe)
+{
+ struct lpfc_async_xchg_ctx *ctxp;
+ struct lpfc_nvmet_tgtport *tgtp;
+ unsigned long flags;
+ uint32_t result;
+ bool released = false;
+ struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
+
+ ctxp = cmdwqe->context_un.axchg;
+ result = wcqe->parameter;
+
+ 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;
+ }
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ spin_lock_irqsave(&ctxp->ctxlock, flags);
+ if (ctxp->flag & LPFC_NVME_ABORT_OP)
+ atomic_inc(&tgtp->xmt_fcp_abort_cmpl);
+
+ /* Sanity check */
+ if (ctxp->state != LPFC_NVME_STE_ABORT) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "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_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_NVME_ABORT_OP;
+ spin_unlock_irqrestore(&ctxp->ctxlock, flags);
+ atomic_inc(&tgtp->xmt_abort_rsp);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6316 ABTS cmpl oxid 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);
+
+ cmdwqe->rsp_dmabuf = NULL;
+ cmdwqe->bpl_dmabuf = NULL;
+ /*
+ * if transport has released ctx, then can reuse it. Otherwise,
+ * will be recycled by transport release call.
+ */
+ if (released)
+ lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
+
+ /* Since iaab/iaar are NOT set, there is no work left.
+ * For LPFC_NVME_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.
+ * @rspwqe: Pointer to driver response WQE 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_iocbq *rspwqe)
+{
+ struct lpfc_async_xchg_ctx *ctxp;
+ struct lpfc_nvmet_tgtport *tgtp;
+ uint32_t result;
+ struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
+
+ ctxp = cmdwqe->context_un.axchg;
+ result = wcqe->parameter;
+
+ 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",
+ ctxp, wcqe->word0, wcqe->total_data_placed,
+ result, wcqe->word3);
+
+ if (!ctxp) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6415 NVMET LS Abort No ctx: WCQE: "
+ "%08x %08x %08x %08x\n",
+ wcqe->word0, wcqe->total_data_placed,
+ result, wcqe->word3);
+
+ lpfc_sli_release_iocbq(phba, cmdwqe);
+ return;
+ }
+
+ if (ctxp->state != LPFC_NVME_STE_LS_ABORT) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6416 NVMET LS abort cmpl state mismatch: "
+ "oxid x%x: %d %d\n",
+ ctxp->oxid, ctxp->state, ctxp->entry_cnt);
+ }
+
+ cmdwqe->rsp_dmabuf = NULL;
+ cmdwqe->bpl_dmabuf = NULL;
+ lpfc_sli_release_iocbq(phba, cmdwqe);
+ kfree(ctxp);
+}
+
+static int
+lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba,
+ struct lpfc_async_xchg_ctx *ctxp,
+ uint32_t sid, uint16_t xri)
+{
+ struct lpfc_nvmet_tgtport *tgtp = NULL;
+ struct lpfc_iocbq *abts_wqeq;
+ union lpfc_wqe128 *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);
+
+ if (phba->nvmet_support && phba->targetport)
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+
+ ndlp = lpfc_findnode_did(phba->pport, sid);
+ if (!ndlp ||
+ ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+ (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
+ if (tgtp)
+ atomic_inc(&tgtp->xmt_abort_rsp_error);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "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;
+
+ /*
+ * 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_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->ndlp = ndlp;
+ abts_wqeq->context_un.axchg = ctxp;
+ abts_wqeq->bpl_dmabuf = NULL;
+ abts_wqeq->num_bdes = 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_async_xchg_ctx *ctxp,
+ uint32_t sid, uint16_t xri)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct lpfc_iocbq *abts_wqeq;
+ struct lpfc_nodelist *ndlp;
+ unsigned long flags;
+ bool ia;
+ int rc;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ if (!ctxp->wqeq) {
+ ctxp->wqeq = ctxp->ctxbuf->iocbq;
+ ctxp->wqeq->hba_wqidx = 0;
+ }
+
+ ndlp = lpfc_findnode_did(phba->pport, sid);
+ if (!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_ERR, LOG_TRACE_EVENT,
+ "6160 Drop ABORT - wrong NDLP state x%x.\n",
+ (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);
+
+ /* No failure to an ABTS request. */
+ spin_lock_irqsave(&ctxp->ctxlock, flags);
+ ctxp->flag &= ~LPFC_NVME_ABORT_OP;
+ spin_unlock_irqrestore(&ctxp->ctxlock, flags);
+ return 0;
+ }
+
+ /* Issue ABTS for this WQE based on iotag */
+ ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba);
+ spin_lock_irqsave(&ctxp->ctxlock, flags);
+ if (!ctxp->abort_wqeq) {
+ atomic_inc(&tgtp->xmt_abort_rsp_error);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6161 ABORT failed: No wqeqs: "
+ "xri: x%x\n", ctxp->oxid);
+ /* No failure to an ABTS request. */
+ ctxp->flag &= ~LPFC_NVME_ABORT_OP;
+ spin_unlock_irqrestore(&ctxp->ctxlock, flags);
+ return 0;
+ }
+ abts_wqeq = ctxp->abort_wqeq;
+ ctxp->state = LPFC_NVME_STE_ABORT;
+ ia = (ctxp->flag & LPFC_NVME_ABTS_RCV) ? true : false;
+ spin_unlock_irqrestore(&ctxp->ctxlock, flags);
+
+ /* 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_IOQ_FLUSH) {
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ atomic_inc(&tgtp->xmt_abort_rsp_error);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "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);
+ spin_lock_irqsave(&ctxp->ctxlock, flags);
+ ctxp->flag &= ~LPFC_NVME_ABORT_OP;
+ spin_unlock_irqrestore(&ctxp->ctxlock, flags);
+ return 0;
+ }
+
+ /* Outstanding abort is in progress */
+ if (abts_wqeq->cmd_flag & LPFC_DRIVER_ABORTED) {
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ atomic_inc(&tgtp->xmt_abort_rsp_error);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6164 Outstanding NVME I/O Abort Request "
+ "still pending on oxid x%x\n",
+ ctxp->oxid);
+ lpfc_sli_release_iocbq(phba, abts_wqeq);
+ spin_lock_irqsave(&ctxp->ctxlock, flags);
+ ctxp->flag &= ~LPFC_NVME_ABORT_OP;
+ spin_unlock_irqrestore(&ctxp->ctxlock, flags);
+ return 0;
+ }
+
+ /* Ready - mark outstanding as aborted by driver. */
+ abts_wqeq->cmd_flag |= LPFC_DRIVER_ABORTED;
+
+ lpfc_sli_prep_abort_xri(phba, abts_wqeq, ctxp->wqeq->sli4_xritag,
+ abts_wqeq->iotag, CLASS3,
+ LPFC_WQE_CQ_ID_DEFAULT, ia, true);
+
+ /* ABTS WQE must go to the same WQ as the WQE to be aborted */
+ abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx;
+ abts_wqeq->cmd_cmpl = lpfc_nvmet_sol_fcp_abort_cmp;
+ abts_wqeq->cmd_flag |= LPFC_IO_NVME;
+ abts_wqeq->context_un.axchg = ctxp;
+ abts_wqeq->vport = phba->pport;
+ if (!ctxp->hdwq)
+ ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx];
+
+ 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_sol);
+ return 0;
+ }
+
+ atomic_inc(&tgtp->xmt_abort_rsp_error);
+ spin_lock_irqsave(&ctxp->ctxlock, flags);
+ 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_TRACE_EVENT,
+ "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_async_xchg_ctx *ctxp,
+ uint32_t sid, uint16_t xri)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct lpfc_iocbq *abts_wqeq;
+ unsigned long flags;
+ bool released = false;
+ int rc;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ if (!ctxp->wqeq) {
+ ctxp->wqeq = ctxp->ctxbuf->iocbq;
+ ctxp->wqeq->hba_wqidx = 0;
+ }
+
+ if (ctxp->state == LPFC_NVME_STE_FREE) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "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_NVME_STE_ABORT;
+ ctxp->entry_cnt++;
+ 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->cmd_cmpl = lpfc_nvmet_unsol_fcp_abort_cmp;
+ abts_wqeq->cmd_flag |= LPFC_IO_NVMET;
+ if (!ctxp->hdwq)
+ ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx];
+
+ rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq);
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ if (rc == WQE_SUCCESS) {
+ return 0;
+ }
+
+aerr:
+ spin_lock_irqsave(&ctxp->ctxlock, flags);
+ 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_NVME_ABORT_OP | LPFC_NVME_CTX_RLS);
+ spin_unlock_irqrestore(&ctxp->ctxlock, flags);
+
+ atomic_inc(&tgtp->xmt_abort_rsp_error);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6135 Failed to Issue ABTS for oxid x%x. Status x%x "
+ "(%x)\n",
+ ctxp->oxid, rc, released);
+ if (released)
+ lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
+ return 1;
+}
+
+/**
+ * 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 = NULL;
+ struct lpfc_iocbq *abts_wqeq;
+ unsigned long flags;
+ int rc;
+
+ 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_TRACE_EVENT,
+ "6418 NVMET LS abort state mismatch "
+ "IO x%x: %d %d\n",
+ ctxp->oxid, ctxp->state, ctxp->entry_cnt);
+ ctxp->state = LPFC_NVME_STE_LS_ABORT;
+ }
+
+ 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);
+ if (!ctxp->wqeq) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6068 Abort failed: No wqeqs: "
+ "xri: x%x\n", xri);
+ /* No failure to an ABTS request. */
+ kfree(ctxp);
+ return 0;
+ }
+ }
+ abts_wqeq = ctxp->wqeq;
+
+ if (lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri) == 0) {
+ rc = WQE_BUSY;
+ goto out;
+ }
+
+ spin_lock_irqsave(&phba->hbalock, flags);
+ abts_wqeq->cmd_cmpl = lpfc_nvmet_xmt_ls_abort_cmp;
+ abts_wqeq->cmd_flag |= LPFC_IO_NVME_LS;
+ rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq);
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ if (rc == WQE_SUCCESS) {
+ if (tgtp)
+ atomic_inc(&tgtp->xmt_abort_unsol);
+ return 0;
+ }
+out:
+ if (tgtp)
+ atomic_inc(&tgtp->xmt_abort_rsp_error);
+ abts_wqeq->rsp_dmabuf = NULL;
+ abts_wqeq->bpl_dmabuf = NULL;
+ lpfc_sli_release_iocbq(phba, abts_wqeq);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6056 Failed to Issue ABTS. Status x%x\n", rc);
+ 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)
+{
+ u32 ndlp_has_hh;
+ struct lpfc_nvmet_tgtport *tgtp;
+
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_NVME | LOG_NVME_ABTS | LOG_NVME_DISC,
+ "6203 Invalidating hosthandle x%px\n",
+ ndlp);
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ atomic_set(&tgtp->state, LPFC_NVMET_INV_HOST_ACTIVE);
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp_has_hh = ndlp->fc4_xpt_flags & NLP_XPT_HAS_HH;
+ spin_unlock_irq(&ndlp->lock);
+
+ /* Do not invalidate any nodes that do not have a hosthandle.
+ * The host_release callbk will cause a node reference
+ * count imbalance and a crash.
+ */
+ if (!ndlp_has_hh) {
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_NVME | LOG_NVME_ABTS | LOG_NVME_DISC,
+ "6204 Skip invalidate on node x%px DID x%x\n",
+ ndlp, ndlp->nlp_DID);
+ return;
+ }
+
+#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
+}