diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_nvmet.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_nvmet.c | 3645 |
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, + ¤t_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(¤t_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(¤t_infop->nvmet_ctx_list_lock, iflag); + if (current_infop->nvmet_ctx_list_cnt) { + list_remove_head(¤t_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(¤t_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 +} |