diff options
author | James Smart <jsmart2021@gmail.com> | 2017-02-12 13:52:37 -0800 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-02-22 18:41:43 -0500 |
commit | d613b6a7aa922690e341c9ff0faba66ae299b5ad (patch) | |
tree | 07c1369af125efb3020e216de3ed4b302dbcc1a8 /drivers/scsi/lpfc/lpfc_nvmet.c | |
parent | 8c258641e01cfcc5620c4fb191300bea224bcc99 (diff) | |
download | linux-d613b6a7aa922690e341c9ff0faba66ae299b5ad.tar.gz linux-d613b6a7aa922690e341c9ff0faba66ae299b5ad.tar.bz2 linux-d613b6a7aa922690e341c9ff0faba66ae299b5ad.zip |
scsi: lpfc: NVME Target: bind to nvmet_fc api
NVME Target: Tie in to NVME Fabrics nvmet_fc LLDD target api
Adds the routines to:
- register and deregister the FC port as a nvmet-fc targetport
- binding of nvme queues to adapter WQs
- receipt and passing of NVME LS's to transport, sending transport response
- receipt of NVME FCP CMD IUs, processing FCP target io data transmission
commands; transmission of FCP io response
- Abort operations for tgt io exchanges
[mkp: fixed space at end of file warning]
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_nvmet.c')
-rw-r--r-- | drivers/scsi/lpfc/lpfc_nvmet.c | 1671 |
1 files changed, 1671 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_nvmet.c b/drivers/scsi/lpfc/lpfc_nvmet.c new file mode 100644 index 000000000000..d4efd86bb156 --- /dev/null +++ b/drivers/scsi/lpfc/lpfc_nvmet.c @@ -0,0 +1,1671 @@ +/******************************************************************* + * This file is part of the Emulex Linux Device Driver for * + * Fibre Channsel Host Bus Adapters. * + * Copyright (C) 2004-2016 Emulex. All rights reserved. * + * EMULEX and SLI are trademarks of Emulex. * + * www.emulex.com * + * Portions Copyright (C) 2004-2005 Christoph Hellwig * + * * + * This program is free software; you can redistribute it and/or * + * modify it under the terms of version 2 of the GNU General * + * Public License as published by the Free Software Foundation. * + * This program is distributed in the hope that it will be useful. * + * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * + * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * + * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * + * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * + * TO BE LEGALLY INVALID. See the GNU General Public License for * + * more details, a copy of which can be found in the file COPYING * + * included with this package. * + ********************************************************************/ +#include <linux/pci.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <asm/unaligned.h> +#include <linux/crc-t10dif.h> +#include <net/checksum.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_eh.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_tcq.h> +#include <scsi/scsi_transport_fc.h> +#include <scsi/fc/fc_fs.h> + +#include <../drivers/nvme/host/nvme.h> +#include <linux/nvme-fc-driver.h> + +#include "lpfc_version.h" +#include "lpfc_hw4.h" +#include "lpfc_hw.h" +#include "lpfc_sli.h" +#include "lpfc_sli4.h" +#include "lpfc_nl.h" +#include "lpfc_disc.h" +#include "lpfc.h" +#include "lpfc_scsi.h" +#include "lpfc_nvme.h" +#include "lpfc_nvmet.h" +#include "lpfc_logmsg.h" +#include "lpfc_crtn.h" +#include "lpfc_vport.h" + +static struct lpfc_iocbq *lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *, + struct lpfc_nvmet_rcv_ctx *, + dma_addr_t rspbuf, + uint16_t rspsize); +static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *, + struct lpfc_nvmet_rcv_ctx *); +static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *, + struct lpfc_nvmet_rcv_ctx *, + uint32_t, uint16_t); +static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *, + struct lpfc_nvmet_rcv_ctx *, + uint32_t, uint16_t); +static int lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *, + struct lpfc_nvmet_rcv_ctx *, + uint32_t, uint16_t); + +/** + * lpfc_nvmet_xmt_ls_rsp_cmp - Completion handler for LS Response + * @phba: Pointer to HBA context object. + * @cmdwqe: Pointer to driver command WQE object. + * @wcqe: Pointer to driver response CQE object. + * + * The function is called from SLI ring event handler with no + * lock held. This function is the completion handler for NVME LS commands + * The function frees memory resources used for the NVME commands. + **/ +static void +lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, + struct lpfc_wcqe_complete *wcqe) +{ + struct lpfc_nvmet_tgtport *tgtp; + struct nvmefc_tgt_ls_req *rsp; + struct lpfc_nvmet_rcv_ctx *ctxp; + uint32_t status, result; + + status = bf_get(lpfc_wcqe_c_status, wcqe); + result = wcqe->parameter; + if (!phba->targetport) + goto out; + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + + if (status) + atomic_inc(&tgtp->xmt_ls_rsp_error); + else + atomic_inc(&tgtp->xmt_ls_rsp_cmpl); + +out: + ctxp = cmdwqe->context2; + rsp = &ctxp->ctx.ls_req; + + lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, + "6038 %s: Entrypoint: ctx %p status %x/%x\n", __func__, + ctxp, status, result); + + lpfc_nlp_put(cmdwqe->context1); + cmdwqe->context2 = NULL; + cmdwqe->context3 = NULL; + lpfc_sli_release_iocbq(phba, cmdwqe); + rsp->done(rsp); + kfree(ctxp); +} + +/** + * lpfc_nvmet_rq_post - Repost a NVMET RQ DMA buffer and clean up context + * @phba: HBA buffer is associated with + * @ctxp: context to clean up + * @mp: Buffer to free + * + * Description: Frees the given DMA buffer in the appropriate way given by + * reposting it to its associated RQ so it can be reused. + * + * Notes: Takes phba->hbalock. Can be called with or without other locks held. + * + * Returns: None + **/ +void +lpfc_nvmet_rq_post(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp, + struct lpfc_dmabuf *mp) +{ + if (ctxp) { + if (ctxp->txrdy) { + pci_pool_free(phba->txrdy_payload_pool, ctxp->txrdy, + ctxp->txrdy_phys); + ctxp->txrdy = NULL; + ctxp->txrdy_phys = 0; + } + ctxp->state = LPFC_NVMET_STE_FREE; + } + lpfc_rq_buf_free(phba, mp); +} + +/** + * lpfc_nvmet_xmt_fcp_op_cmp - Completion handler for FCP Response + * @phba: Pointer to HBA context object. + * @cmdwqe: Pointer to driver command WQE object. + * @wcqe: Pointer to driver response CQE object. + * + * The function is called from SLI ring event handler with no + * lock held. This function is the completion handler for NVME FCP commands + * The function frees memory resources used for the NVME commands. + **/ +static void +lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, + struct lpfc_wcqe_complete *wcqe) +{ + struct lpfc_nvmet_tgtport *tgtp; + struct nvmefc_tgt_fcp_req *rsp; + struct lpfc_nvmet_rcv_ctx *ctxp; + uint32_t status, result, op, start_clean; + + ctxp = cmdwqe->context2; + rsp = &ctxp->ctx.fcp_req; + op = rsp->op; + ctxp->flag &= ~LPFC_NVMET_IO_INP; + + status = bf_get(lpfc_wcqe_c_status, wcqe); + result = wcqe->parameter; + + if (!phba->targetport) + goto out; + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + if (status) { + rsp->fcp_error = NVME_SC_DATA_XFER_ERROR; + rsp->transferred_length = 0; + atomic_inc(&tgtp->xmt_fcp_rsp_error); + } else { + rsp->fcp_error = NVME_SC_SUCCESS; + if (op == NVMET_FCOP_RSP) + rsp->transferred_length = rsp->rsplen; + else + rsp->transferred_length = rsp->transfer_length; + atomic_inc(&tgtp->xmt_fcp_rsp_cmpl); + } + +out: + if ((op == NVMET_FCOP_READDATA_RSP) || + (op == NVMET_FCOP_RSP)) { + /* Sanity check */ + ctxp->state = LPFC_NVMET_STE_DONE; + ctxp->entry_cnt++; + rsp->done(rsp); + /* Let Abort cmpl repost the context */ + if (!(ctxp->flag & LPFC_NVMET_ABORT_OP)) + lpfc_nvmet_rq_post(phba, ctxp, &ctxp->rqb_buffer->hbuf); + } else { + ctxp->entry_cnt++; + start_clean = offsetof(struct lpfc_iocbq, wqe); + memset(((char *)cmdwqe) + start_clean, 0, + (sizeof(struct lpfc_iocbq) - start_clean)); + rsp->done(rsp); + } +} + +static int +lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport, + struct nvmefc_tgt_ls_req *rsp) +{ + struct lpfc_nvmet_rcv_ctx *ctxp = + container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.ls_req); + struct lpfc_hba *phba = ctxp->phba; + struct hbq_dmabuf *nvmebuf = + (struct hbq_dmabuf *)ctxp->rqb_buffer; + struct lpfc_iocbq *nvmewqeq; + struct lpfc_nvmet_tgtport *nvmep = tgtport->private; + struct lpfc_dmabuf dmabuf; + struct ulp_bde64 bpl; + int rc; + + lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, + "6023 %s: Entrypoint ctx %p %p\n", __func__, + ctxp, tgtport); + + nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, ctxp, rsp->rspdma, + rsp->rsplen); + if (nvmewqeq == NULL) { + atomic_inc(&nvmep->xmt_ls_drop); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6150 LS Drop IO x%x: Prep\n", + ctxp->oxid); + lpfc_in_buf_free(phba, &nvmebuf->dbuf); + lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, + ctxp->sid, ctxp->oxid); + return -ENOMEM; + } + + /* Save numBdes for bpl2sgl */ + nvmewqeq->rsvd2 = 1; + nvmewqeq->hba_wqidx = 0; + nvmewqeq->context3 = &dmabuf; + dmabuf.virt = &bpl; + bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow; + bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh; + bpl.tus.f.bdeSize = rsp->rsplen; + bpl.tus.f.bdeFlags = 0; + bpl.tus.w = le32_to_cpu(bpl.tus.w); + + nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_rsp_cmp; + nvmewqeq->iocb_cmpl = NULL; + nvmewqeq->context2 = ctxp; + + rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, nvmewqeq); + if (rc == WQE_SUCCESS) { + /* + * Okay to repost buffer here, but wait till cmpl + * before freeing ctxp and iocbq. + */ + lpfc_in_buf_free(phba, &nvmebuf->dbuf); + ctxp->rqb_buffer = 0; + atomic_inc(&nvmep->xmt_ls_rsp); + return 0; + } + /* Give back resources */ + atomic_inc(&nvmep->xmt_ls_drop); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6151 LS Drop IO x%x: Issue %d\n", + ctxp->oxid, rc); + + lpfc_nlp_put(nvmewqeq->context1); + + lpfc_in_buf_free(phba, &nvmebuf->dbuf); + lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid); + return -ENXIO; +} + +static int +lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport, + struct nvmefc_tgt_fcp_req *rsp) +{ + struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; + struct lpfc_nvmet_rcv_ctx *ctxp = + container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); + struct lpfc_hba *phba = ctxp->phba; + struct lpfc_iocbq *nvmewqeq; + unsigned long iflags; + int rc; + + if (rsp->op == NVMET_FCOP_ABORT) { + lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, + "6103 Abort op: oxri x%x %d cnt %d\n", + ctxp->oxid, ctxp->state, ctxp->entry_cnt); + atomic_inc(&lpfc_nvmep->xmt_fcp_abort); + ctxp->entry_cnt++; + ctxp->flag |= LPFC_NVMET_ABORT_OP; + if (ctxp->flag & LPFC_NVMET_IO_INP) + lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid, + ctxp->oxid); + else + lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, + ctxp->oxid); + return 0; + } + + /* Sanity check */ + if (ctxp->state == LPFC_NVMET_STE_ABORT) { + atomic_inc(&lpfc_nvmep->xmt_fcp_drop); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6102 Bad state IO x%x aborted\n", + ctxp->oxid); + goto aerr; + } + + nvmewqeq = lpfc_nvmet_prep_fcp_wqe(phba, ctxp); + if (nvmewqeq == NULL) { + atomic_inc(&lpfc_nvmep->xmt_fcp_drop); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6152 FCP Drop IO x%x: Prep\n", + ctxp->oxid); + goto aerr; + } + + nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_fcp_op_cmp; + nvmewqeq->iocb_cmpl = NULL; + nvmewqeq->context2 = ctxp; + nvmewqeq->iocb_flag |= LPFC_IO_NVMET; + ctxp->wqeq->hba_wqidx = rsp->hwqid; + + /* For now we take hbalock */ + spin_lock_irqsave(&phba->hbalock, iflags); + rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, nvmewqeq); + spin_unlock_irqrestore(&phba->hbalock, iflags); + if (rc == WQE_SUCCESS) { + ctxp->flag |= LPFC_NVMET_IO_INP; + return 0; + } + + /* Give back resources */ + atomic_inc(&lpfc_nvmep->xmt_fcp_drop); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6153 FCP Drop IO x%x: Issue: %d\n", + ctxp->oxid, rc); + + ctxp->wqeq->hba_wqidx = 0; + nvmewqeq->context2 = NULL; + nvmewqeq->context3 = NULL; +aerr: + return -ENXIO; +} + +static void +lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport) +{ + struct lpfc_nvmet_tgtport *tport = targetport->private; + + /* release any threads waiting for the unreg to complete */ + complete(&tport->tport_unreg_done); +} + +static 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, + + .max_hw_queues = 1, + .max_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, + .max_dif_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, + .dma_boundary = 0xFFFFFFFF, + + /* optional features */ + .target_features = 0, + /* sizes of additional private data for data structures */ + .target_priv_sz = sizeof(struct lpfc_nvmet_tgtport), +}; + +int +lpfc_nvmet_create_targetport(struct lpfc_hba *phba) +{ + struct lpfc_vport *vport = phba->pport; + struct lpfc_nvmet_tgtport *tgtp; + struct nvmet_fc_port_info pinfo; + int error = 0; + + if (phba->targetport) + return 0; + + memset(&pinfo, 0, sizeof(struct nvmet_fc_port_info)); + pinfo.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); + pinfo.port_name = wwn_to_u64(vport->fc_portname.u.wwn); + pinfo.port_id = vport->fc_myDID; + + lpfc_tgttemplate.max_hw_queues = phba->cfg_nvme_io_channel; + lpfc_tgttemplate.max_sgl_segments = phba->cfg_sg_seg_cnt; + lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP | + NVMET_FCTGTFEAT_NEEDS_CMD_CPUSCHED; + + error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate, + &phba->pcidev->dev, + &phba->targetport); + if (error) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, + "6025 Cannot register NVME targetport " + "x%x\n", error); + phba->targetport = NULL; + } else { + tgtp = (struct lpfc_nvmet_tgtport *) + phba->targetport->private; + tgtp->phba = phba; + + lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, + "6026 Registered NVME " + "targetport: %p, private %p " + "portnm %llx nodenm %llx\n", + phba->targetport, tgtp, + pinfo.port_name, pinfo.node_name); + + atomic_set(&tgtp->rcv_ls_req_in, 0); + atomic_set(&tgtp->rcv_ls_req_out, 0); + atomic_set(&tgtp->rcv_ls_req_drop, 0); + atomic_set(&tgtp->xmt_ls_abort, 0); + atomic_set(&tgtp->xmt_ls_rsp, 0); + atomic_set(&tgtp->xmt_ls_drop, 0); + atomic_set(&tgtp->xmt_ls_rsp_error, 0); + atomic_set(&tgtp->xmt_ls_rsp_cmpl, 0); + atomic_set(&tgtp->rcv_fcp_cmd_in, 0); + atomic_set(&tgtp->rcv_fcp_cmd_out, 0); + atomic_set(&tgtp->rcv_fcp_cmd_drop, 0); + atomic_set(&tgtp->xmt_fcp_abort, 0); + atomic_set(&tgtp->xmt_fcp_drop, 0); + atomic_set(&tgtp->xmt_fcp_read_rsp, 0); + atomic_set(&tgtp->xmt_fcp_read, 0); + atomic_set(&tgtp->xmt_fcp_write, 0); + atomic_set(&tgtp->xmt_fcp_rsp, 0); + atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0); + atomic_set(&tgtp->xmt_fcp_rsp_error, 0); + atomic_set(&tgtp->xmt_fcp_rsp_drop, 0); + atomic_set(&tgtp->xmt_abort_rsp, 0); + atomic_set(&tgtp->xmt_abort_rsp_error, 0); + atomic_set(&tgtp->xmt_abort_cmpl, 0); + } + return error; +} + +int +lpfc_nvmet_update_targetport(struct lpfc_hba *phba) +{ + struct lpfc_vport *vport = phba->pport; + + if (!phba->targetport) + return 0; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, + "6007 Update NVMET port %p did x%x\n", + phba->targetport, vport->fc_myDID); + + phba->targetport->port_id = vport->fc_myDID; + return 0; +} + +void +lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba) +{ + struct lpfc_nvmet_tgtport *tgtp; + + if (phba->nvmet_support == 0) + return; + if (phba->targetport) { + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + init_completion(&tgtp->tport_unreg_done); + nvmet_fc_unregister_targetport(phba->targetport); + wait_for_completion_timeout(&tgtp->tport_unreg_done, 5); + } + phba->targetport = NULL; +} + +/** + * lpfc_nvmet_unsol_ls_buffer - Process an unsolicited event data buffer + * @phba: pointer to lpfc hba data structure. + * @pring: pointer to a SLI ring. + * @nvmebuf: pointer to lpfc nvme command HBQ data structure. + * + * This routine is used for processing the WQE associated with a unsolicited + * event. It first determines whether there is an existing ndlp that matches + * the DID from the unsolicited WQE. If not, it will create a new one with + * the DID from the unsolicited WQE. The ELS command from the unsolicited + * WQE is then used to invoke the proper routine and to set up proper state + * of the discovery state machine. + **/ +static void +lpfc_nvmet_unsol_ls_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct hbq_dmabuf *nvmebuf) +{ + struct lpfc_nvmet_tgtport *tgtp; + struct fc_frame_header *fc_hdr; + struct lpfc_nvmet_rcv_ctx *ctxp; + uint32_t *payload; + uint32_t size, oxid, sid, rc; + + if (!nvmebuf || !phba->targetport) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6154 LS Drop IO\n"); + goto dropit; + } + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + payload = (uint32_t *)(nvmebuf->dbuf.virt); + fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); + size = bf_get(lpfc_rcqe_length, &nvmebuf->cq_event.cqe.rcqe_cmpl); + oxid = be16_to_cpu(fc_hdr->fh_ox_id); + sid = sli4_sid_from_fc_hdr(fc_hdr); + + ctxp = kzalloc(sizeof(struct lpfc_nvmet_rcv_ctx), GFP_ATOMIC); + if (ctxp == NULL) { + atomic_inc(&tgtp->rcv_ls_req_drop); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6155 LS Drop IO x%x: Alloc\n", + oxid); +dropit: + if (nvmebuf) + lpfc_in_buf_free(phba, &nvmebuf->dbuf); + return; + } + ctxp->phba = phba; + ctxp->size = size; + ctxp->oxid = oxid; + ctxp->sid = sid; + ctxp->wqeq = NULL; + ctxp->state = LPFC_NVMET_STE_RCV; + ctxp->rqb_buffer = (void *)nvmebuf; + /* + * The calling sequence should be: + * nvmet_fc_rcv_ls_req -> lpfc_nvmet_xmt_ls_rsp/cmp ->_req->done + * lpfc_nvmet_xmt_ls_rsp_cmp should free the allocated ctxp. + */ + atomic_inc(&tgtp->rcv_ls_req_in); + rc = nvmet_fc_rcv_ls_req(phba->targetport, &ctxp->ctx.ls_req, + payload, size); + + lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, + "6037 %s: ctx %p sz %d rc %d: %08x %08x %08x " + "%08x %08x %08x\n", __func__, ctxp, size, rc, + *payload, *(payload+1), *(payload+2), + *(payload+3), *(payload+4), *(payload+5)); + if (rc == 0) { + atomic_inc(&tgtp->rcv_ls_req_out); + return; + } + atomic_inc(&tgtp->rcv_ls_req_drop); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6156 LS Drop IO x%x: nvmet_fc_rcv_ls_req %d\n", + ctxp->oxid, rc); + + /* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */ + if (nvmebuf) + lpfc_in_buf_free(phba, &nvmebuf->dbuf); + + atomic_inc(&tgtp->xmt_ls_abort); + lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, sid, oxid); +} + +/** + * lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer + * @phba: pointer to lpfc hba data structure. + * @pring: pointer to a SLI ring. + * @nvmebuf: pointer to lpfc nvme command HBQ data structure. + * + * This routine is used for processing the WQE associated with a unsolicited + * event. It first determines whether there is an existing ndlp that matches + * the DID from the unsolicited WQE. If not, it will create a new one with + * the DID from the unsolicited WQE. The ELS command from the unsolicited + * WQE is then used to invoke the proper routine and to set up proper state + * of the discovery state machine. + **/ +static void +lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba, + struct lpfc_sli_ring *pring, + struct rqb_dmabuf *nvmebuf, + uint64_t isr_timestamp) +{ + struct lpfc_nvmet_rcv_ctx *ctxp; + struct lpfc_nvmet_tgtport *tgtp; + struct fc_frame_header *fc_hdr; + uint32_t *payload; + uint32_t size, oxid, sid, rc; + + oxid = 0; + if (!nvmebuf || !phba->targetport) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6157 FCP Drop IO\n"); + goto dropit; + } + + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + payload = (uint32_t *)(nvmebuf->dbuf.virt); + fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); + size = nvmebuf->bytes_recv; + oxid = be16_to_cpu(fc_hdr->fh_ox_id); + sid = sli4_sid_from_fc_hdr(fc_hdr); + + ctxp = (struct lpfc_nvmet_rcv_ctx *)nvmebuf->context; + if (ctxp == NULL) { + atomic_inc(&tgtp->rcv_fcp_cmd_drop); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6158 FCP Drop IO x%x: Alloc\n", + oxid); + lpfc_nvmet_rq_post(phba, NULL, &nvmebuf->hbuf); + /* Cannot send ABTS without context */ + return; + } + memset(ctxp, 0, sizeof(ctxp->ctx)); + ctxp->wqeq = NULL; + ctxp->txrdy = NULL; + ctxp->offset = 0; + ctxp->phba = phba; + ctxp->size = size; + ctxp->oxid = oxid; + ctxp->sid = sid; + ctxp->state = LPFC_NVMET_STE_RCV; + ctxp->rqb_buffer = nvmebuf; + ctxp->entry_cnt = 1; + ctxp->flag = 0; + + atomic_inc(&tgtp->rcv_fcp_cmd_in); + /* + * The calling sequence should be: + * nvmet_fc_rcv_fcp_req -> lpfc_nvmet_xmt_fcp_op/cmp -> req->done + * lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp. + */ + rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->ctx.fcp_req, + payload, size); + + /* Process FCP command */ + if (rc == 0) { + atomic_inc(&tgtp->rcv_fcp_cmd_out); + return; + } + + atomic_inc(&tgtp->rcv_fcp_cmd_drop); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6159 FCP Drop IO x%x: nvmet_fc_rcv_fcp_req x%x\n", + ctxp->oxid, rc); +dropit: + if (oxid) { + lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid); + return; + } + + if (nvmebuf) { + nvmebuf->iocbq->hba_wqidx = 0; + /* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */ + lpfc_nvmet_rq_post(phba, NULL, &nvmebuf->hbuf); + } +} + +/** + * lpfc_nvmet_unsol_ls_event - Process an unsolicited event from an nvme nport + * @phba: pointer to lpfc hba data structure. + * @pring: pointer to a SLI ring. + * @nvmebuf: pointer to received nvme data structure. + * + * This routine is used to process an unsolicited event received from a SLI + * (Service Level Interface) ring. The actual processing of the data buffer + * associated with the unsolicited event is done by invoking the routine + * lpfc_nvmet_unsol_ls_buffer() after properly set up the buffer from the + * SLI RQ on which the unsolicited event was received. + **/ +void +lpfc_nvmet_unsol_ls_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq *piocb) +{ + struct lpfc_dmabuf *d_buf; + struct hbq_dmabuf *nvmebuf; + + d_buf = piocb->context2; + nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf); + + if (phba->nvmet_support == 0) { + lpfc_in_buf_free(phba, &nvmebuf->dbuf); + return; + } + lpfc_nvmet_unsol_ls_buffer(phba, pring, nvmebuf); +} + +/** + * lpfc_nvmet_unsol_fcp_event - Process an unsolicited event from an nvme nport + * @phba: pointer to lpfc hba data structure. + * @pring: pointer to a SLI ring. + * @nvmebuf: pointer to received nvme data structure. + * + * This routine is used to process an unsolicited event received from a SLI + * (Service Level Interface) ring. The actual processing of the data buffer + * associated with the unsolicited event is done by invoking the routine + * lpfc_nvmet_unsol_fcp_buffer() after properly set up the buffer from the + * SLI RQ on which the unsolicited event was received. + **/ +void +lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba, + struct lpfc_sli_ring *pring, + struct rqb_dmabuf *nvmebuf, + uint64_t isr_timestamp) +{ + if (phba->nvmet_support == 0) { + lpfc_nvmet_rq_post(phba, NULL, &nvmebuf->hbuf); + return; + } + lpfc_nvmet_unsol_fcp_buffer(phba, pring, nvmebuf, + isr_timestamp); +} + +/** + * lpfc_nvmet_prep_ls_wqe - Allocate and prepare a lpfc wqe data structure + * @phba: pointer to a host N_Port data structure. + * @ctxp: Context info for NVME LS Request + * @rspbuf: DMA buffer of NVME command. + * @rspsize: size of the NVME command. + * + * This routine is used for allocating a lpfc-WQE data structure from + * the driver lpfc-WQE free-list and prepare the WQE with the parameters + * passed into the routine for discovery state machine to issue an Extended + * Link Service (NVME) commands. It is a generic lpfc-WQE allocation + * and preparation routine that is used by all the discovery state machine + * routines and the NVME command-specific fields will be later set up by + * the individual discovery machine routines after calling this routine + * allocating and preparing a generic WQE data structure. It fills in the + * Buffer Descriptor Entries (BDEs), allocates buffers for both command + * payload and response payload (if expected). The reference count on the + * ndlp is incremented by 1 and the reference to the ndlp is put into + * context1 of the WQE data structure for this WQE to hold the ndlp + * reference for the command's callback function to access later. + * + * Return code + * Pointer to the newly allocated/prepared nvme wqe data structure + * NULL - when nvme wqe data structure allocation/preparation failed + **/ +static struct lpfc_iocbq * +lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba, + struct lpfc_nvmet_rcv_ctx *ctxp, + dma_addr_t rspbuf, uint16_t rspsize) +{ + struct lpfc_nodelist *ndlp; + struct lpfc_iocbq *nvmewqe; + union lpfc_wqe *wqe; + + if (!lpfc_is_link_up(phba)) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, + "6104 lpfc_nvmet_prep_ls_wqe: link err: " + "NPORT x%x oxid:x%x\n", + ctxp->sid, ctxp->oxid); + return NULL; + } + + /* Allocate buffer for command wqe */ + nvmewqe = lpfc_sli_get_iocbq(phba); + if (nvmewqe == NULL) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, + "6105 lpfc_nvmet_prep_ls_wqe: No WQE: " + "NPORT x%x oxid:x%x\n", + ctxp->sid, ctxp->oxid); + return NULL; + } + + ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); + if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || + ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && + (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, + "6106 lpfc_nvmet_prep_ls_wqe: No ndlp: " + "NPORT x%x oxid:x%x\n", + ctxp->sid, ctxp->oxid); + goto nvme_wqe_free_wqeq_exit; + } + ctxp->wqeq = nvmewqe; + + /* prevent preparing wqe with NULL ndlp reference */ + nvmewqe->context1 = lpfc_nlp_get(ndlp); + if (nvmewqe->context1 == NULL) + goto nvme_wqe_free_wqeq_exit; + nvmewqe->context2 = ctxp; + + wqe = &nvmewqe->wqe; + memset(wqe, 0, sizeof(union lpfc_wqe)); + + /* Words 0 - 2 */ + wqe->xmit_sequence.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; + wqe->xmit_sequence.bde.tus.f.bdeSize = rspsize; + wqe->xmit_sequence.bde.addrLow = le32_to_cpu(putPaddrLow(rspbuf)); + wqe->xmit_sequence.bde.addrHigh = le32_to_cpu(putPaddrHigh(rspbuf)); + + /* Word 3 */ + + /* Word 4 */ + + /* Word 5 */ + bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0); + bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, 1); + bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 0); + bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, FC_RCTL_DD_SOL_CTL); + bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_NVME); + + /* Word 6 */ + bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com, + phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); + bf_set(wqe_xri_tag, &wqe->xmit_sequence.wqe_com, nvmewqe->sli4_xritag); + + /* Word 7 */ + bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com, + CMD_XMIT_SEQUENCE64_WQE); + bf_set(wqe_ct, &wqe->xmit_sequence.wqe_com, SLI4_CT_RPI); + bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3); + bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0); + + /* Word 8 */ + wqe->xmit_sequence.wqe_com.abort_tag = nvmewqe->iotag; + + /* Word 9 */ + bf_set(wqe_reqtag, &wqe->xmit_sequence.wqe_com, nvmewqe->iotag); + /* Needs to be set by caller */ + bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ctxp->oxid); + + /* Word 10 */ + bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1); + bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE); + bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com, + LPFC_WQE_LENLOC_WORD12); + bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0); + + /* Word 11 */ + bf_set(wqe_cqid, &wqe->xmit_sequence.wqe_com, + LPFC_WQE_CQ_ID_DEFAULT); + bf_set(wqe_cmd_type, &wqe->xmit_sequence.wqe_com, + OTHER_COMMAND); + + /* Word 12 */ + wqe->xmit_sequence.xmit_len = rspsize; + + nvmewqe->retry = 1; + nvmewqe->vport = phba->pport; + nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; + nvmewqe->iocb_flag |= LPFC_IO_NVME_LS; + + /* Xmit NVME response to remote NPORT <did> */ + lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, + "6039 Xmit NVME LS response to remote " + "NPORT x%x iotag:x%x oxid:x%x size:x%x\n", + ndlp->nlp_DID, nvmewqe->iotag, ctxp->oxid, + rspsize); + return nvmewqe; + +nvme_wqe_free_wqeq_exit: + nvmewqe->context2 = NULL; + nvmewqe->context3 = NULL; + lpfc_sli_release_iocbq(phba, nvmewqe); + return NULL; +} + + +static struct lpfc_iocbq * +lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba, + struct lpfc_nvmet_rcv_ctx *ctxp) +{ + struct nvmefc_tgt_fcp_req *rsp = &ctxp->ctx.fcp_req; + struct lpfc_nvmet_tgtport *tgtp; + struct sli4_sge *sgl; + struct lpfc_nodelist *ndlp; + struct lpfc_iocbq *nvmewqe; + struct scatterlist *sgel; + union lpfc_wqe128 *wqe; + uint32_t *txrdy; + dma_addr_t physaddr; + int i, cnt; + int xc = 1; + + if (!lpfc_is_link_up(phba)) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6107 lpfc_nvmet_prep_fcp_wqe: link err:" + "NPORT x%x oxid:x%x\n", ctxp->sid, + ctxp->oxid); + return NULL; + } + + ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); + if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || + ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && + (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6108 lpfc_nvmet_prep_fcp_wqe: no ndlp: " + "NPORT x%x oxid:x%x\n", + ctxp->sid, ctxp->oxid); + return NULL; + } + + if (rsp->sg_cnt > phba->cfg_sg_seg_cnt) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6109 lpfc_nvmet_prep_fcp_wqe: seg cnt err: " + "NPORT x%x oxid:x%x\n", + ctxp->sid, ctxp->oxid); + return NULL; + } + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + nvmewqe = ctxp->wqeq; + if (nvmewqe == NULL) { + /* Allocate buffer for command wqe */ + nvmewqe = ctxp->rqb_buffer->iocbq; + if (nvmewqe == NULL) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6110 lpfc_nvmet_prep_fcp_wqe: No " + "WQE: NPORT x%x oxid:x%x\n", + ctxp->sid, ctxp->oxid); + return NULL; + } + ctxp->wqeq = nvmewqe; + xc = 0; /* create new XRI */ + nvmewqe->sli4_lxritag = NO_XRI; + nvmewqe->sli4_xritag = NO_XRI; + } + + /* Sanity check */ + if (((ctxp->state == LPFC_NVMET_STE_RCV) && + (ctxp->entry_cnt == 1)) || + ((ctxp->state == LPFC_NVMET_STE_DATA) && + (ctxp->entry_cnt > 1))) { + wqe = (union lpfc_wqe128 *)&nvmewqe->wqe; + } else { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6111 Wrong state %s: %d cnt %d\n", + __func__, ctxp->state, ctxp->entry_cnt); + return NULL; + } + + sgl = (struct sli4_sge *)ctxp->rqb_buffer->sglq->sgl; + switch (rsp->op) { + case NVMET_FCOP_READDATA: + case NVMET_FCOP_READDATA_RSP: + /* Words 0 - 2 : The first sg segment */ + sgel = &rsp->sg[0]; + physaddr = sg_dma_address(sgel); + wqe->fcp_tsend.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; + wqe->fcp_tsend.bde.tus.f.bdeSize = sg_dma_len(sgel); + wqe->fcp_tsend.bde.addrLow = cpu_to_le32(putPaddrLow(physaddr)); + wqe->fcp_tsend.bde.addrHigh = + cpu_to_le32(putPaddrHigh(physaddr)); + + /* Word 3 */ + wqe->fcp_tsend.payload_offset_len = 0; + + /* Word 4 */ + wqe->fcp_tsend.relative_offset = ctxp->offset; + + /* Word 5 */ + + /* Word 6 */ + bf_set(wqe_ctxt_tag, &wqe->fcp_tsend.wqe_com, + phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); + bf_set(wqe_xri_tag, &wqe->fcp_tsend.wqe_com, + nvmewqe->sli4_xritag); + + /* Word 7 */ + bf_set(wqe_cmnd, &wqe->fcp_tsend.wqe_com, CMD_FCP_TSEND64_WQE); + + /* Word 8 */ + wqe->fcp_tsend.wqe_com.abort_tag = nvmewqe->iotag; + + /* Word 9 */ + bf_set(wqe_reqtag, &wqe->fcp_tsend.wqe_com, nvmewqe->iotag); + bf_set(wqe_rcvoxid, &wqe->fcp_tsend.wqe_com, ctxp->oxid); + + /* Word 10 */ + bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1); + bf_set(wqe_dbde, &wqe->fcp_tsend.wqe_com, 1); + bf_set(wqe_iod, &wqe->fcp_tsend.wqe_com, LPFC_WQE_IOD_WRITE); + bf_set(wqe_lenloc, &wqe->fcp_tsend.wqe_com, + LPFC_WQE_LENLOC_WORD12); + bf_set(wqe_ebde_cnt, &wqe->fcp_tsend.wqe_com, 0); + bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, xc); + bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1); + if (phba->cfg_nvme_oas) + bf_set(wqe_oas, &wqe->fcp_tsend.wqe_com, 1); + + /* Word 11 */ + bf_set(wqe_cqid, &wqe->fcp_tsend.wqe_com, + LPFC_WQE_CQ_ID_DEFAULT); + bf_set(wqe_cmd_type, &wqe->fcp_tsend.wqe_com, + FCP_COMMAND_TSEND); + + /* Word 12 */ + wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; + + /* Setup 2 SKIP SGEs */ + sgl->addr_hi = 0; + sgl->addr_lo = 0; + sgl->word2 = 0; + bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); + sgl->word2 = cpu_to_le32(sgl->word2); + sgl->sge_len = 0; + sgl++; + sgl->addr_hi = 0; + sgl->addr_lo = 0; + sgl->word2 = 0; + bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); + sgl->word2 = cpu_to_le32(sgl->word2); + sgl->sge_len = 0; + sgl++; + if (rsp->op == NVMET_FCOP_READDATA_RSP) { + atomic_inc(&tgtp->xmt_fcp_read_rsp); + bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 1); + if ((ndlp->nlp_flag & NLP_SUPPRESS_RSP) && + (rsp->rsplen == 12)) { + bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 1); + bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0); + bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0); + bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0); + } else { + bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0); + bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 1); + bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 1); + bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, + ((rsp->rsplen >> 2) - 1)); + memcpy(&wqe->words[16], rsp->rspaddr, + rsp->rsplen); + } + } else { + atomic_inc(&tgtp->xmt_fcp_read); + + bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0); + bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0); + bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0); + bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0); + bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0); + } + ctxp->state = LPFC_NVMET_STE_DATA; + break; + + case NVMET_FCOP_WRITEDATA: + /* Words 0 - 2 : The first sg segment */ + txrdy = pci_pool_alloc(phba->txrdy_payload_pool, + GFP_KERNEL, &physaddr); + if (!txrdy) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, + "6041 Bad txrdy buffer: oxid x%x\n", + ctxp->oxid); + return NULL; + } + ctxp->txrdy = txrdy; + ctxp->txrdy_phys = physaddr; + wqe->fcp_treceive.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; + wqe->fcp_treceive.bde.tus.f.bdeSize = TXRDY_PAYLOAD_LEN; + wqe->fcp_treceive.bde.addrLow = + cpu_to_le32(putPaddrLow(physaddr)); + wqe->fcp_treceive.bde.addrHigh = + cpu_to_le32(putPaddrHigh(physaddr)); + + /* Word 3 */ + wqe->fcp_treceive.payload_offset_len = TXRDY_PAYLOAD_LEN; + + /* Word 4 */ + wqe->fcp_treceive.relative_offset = ctxp->offset; + + /* Word 5 */ + + /* Word 6 */ + bf_set(wqe_ctxt_tag, &wqe->fcp_treceive.wqe_com, + phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); + bf_set(wqe_xri_tag, &wqe->fcp_treceive.wqe_com, + nvmewqe->sli4_xritag); + + /* Word 7 */ + bf_set(wqe_ar, &wqe->fcp_treceive.wqe_com, 0); + bf_set(wqe_cmnd, &wqe->fcp_treceive.wqe_com, + CMD_FCP_TRECEIVE64_WQE); + + /* Word 8 */ + wqe->fcp_treceive.wqe_com.abort_tag = nvmewqe->iotag; + + /* Word 9 */ + bf_set(wqe_reqtag, &wqe->fcp_treceive.wqe_com, nvmewqe->iotag); + bf_set(wqe_rcvoxid, &wqe->fcp_treceive.wqe_com, ctxp->oxid); + + /* Word 10 */ + bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1); + bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1); + bf_set(wqe_iod, &wqe->fcp_treceive.wqe_com, LPFC_WQE_IOD_READ); + bf_set(wqe_lenloc, &wqe->fcp_treceive.wqe_com, + LPFC_WQE_LENLOC_WORD12); + bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, xc); + bf_set(wqe_wqes, &wqe->fcp_treceive.wqe_com, 0); + bf_set(wqe_irsp, &wqe->fcp_treceive.wqe_com, 0); + bf_set(wqe_irsplen, &wqe->fcp_treceive.wqe_com, 0); + bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1); + if (phba->cfg_nvme_oas) + bf_set(wqe_oas, &wqe->fcp_treceive.wqe_com, 1); + + /* Word 11 */ + bf_set(wqe_cqid, &wqe->fcp_treceive.wqe_com, + LPFC_WQE_CQ_ID_DEFAULT); + bf_set(wqe_cmd_type, &wqe->fcp_treceive.wqe_com, + FCP_COMMAND_TRECEIVE); + bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0); + + /* Word 12 */ + wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; + + /* Setup 1 TXRDY and 1 SKIP SGE */ + txrdy[0] = 0; + txrdy[1] = cpu_to_be32(rsp->transfer_length); + txrdy[2] = 0; + + sgl->addr_hi = putPaddrHigh(physaddr); + sgl->addr_lo = putPaddrLow(physaddr); + sgl->word2 = 0; + bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); + sgl->word2 = cpu_to_le32(sgl->word2); + sgl->sge_len = cpu_to_le32(TXRDY_PAYLOAD_LEN); + sgl++; + sgl->addr_hi = 0; + sgl->addr_lo = 0; + sgl->word2 = 0; + bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); + sgl->word2 = cpu_to_le32(sgl->word2); + sgl->sge_len = 0; + sgl++; + ctxp->state = LPFC_NVMET_STE_DATA; + atomic_inc(&tgtp->xmt_fcp_write); + break; + + case NVMET_FCOP_RSP: + /* Words 0 - 2 */ + sgel = &rsp->sg[0]; + physaddr = rsp->rspdma; + wqe->fcp_trsp.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; + wqe->fcp_trsp.bde.tus.f.bdeSize = rsp->rsplen; + wqe->fcp_trsp.bde.addrLow = + cpu_to_le32(putPaddrLow(physaddr)); + wqe->fcp_trsp.bde.addrHigh = + cpu_to_le32(putPaddrHigh(physaddr)); + + /* Word 3 */ + wqe->fcp_trsp.response_len = rsp->rsplen; + + /* Word 4 */ + wqe->fcp_trsp.rsvd_4_5[0] = 0; + + + /* Word 5 */ + + /* Word 6 */ + bf_set(wqe_ctxt_tag, &wqe->fcp_trsp.wqe_com, + phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); + bf_set(wqe_xri_tag, &wqe->fcp_trsp.wqe_com, + nvmewqe->sli4_xritag); + + /* Word 7 */ + bf_set(wqe_ag, &wqe->fcp_trsp.wqe_com, 1); + bf_set(wqe_cmnd, &wqe->fcp_trsp.wqe_com, CMD_FCP_TRSP64_WQE); + + /* Word 8 */ + wqe->fcp_trsp.wqe_com.abort_tag = nvmewqe->iotag; + + /* Word 9 */ + bf_set(wqe_reqtag, &wqe->fcp_trsp.wqe_com, nvmewqe->iotag); + bf_set(wqe_rcvoxid, &wqe->fcp_trsp.wqe_com, ctxp->oxid); + + /* Word 10 */ + bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1); + bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 0); + bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_WRITE); + bf_set(wqe_lenloc, &wqe->fcp_trsp.wqe_com, + LPFC_WQE_LENLOC_WORD3); + bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, xc); + bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1); + if (phba->cfg_nvme_oas) + bf_set(wqe_oas, &wqe->fcp_trsp.wqe_com, 1); + + /* Word 11 */ + bf_set(wqe_cqid, &wqe->fcp_trsp.wqe_com, + LPFC_WQE_CQ_ID_DEFAULT); + bf_set(wqe_cmd_type, &wqe->fcp_trsp.wqe_com, + FCP_COMMAND_TRSP); + bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0); + ctxp->state = LPFC_NVMET_STE_RSP; + + if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) { + /* Good response - all zero's on wire */ + bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 0); + bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 0); + bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 0); + } else { + bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 1); + bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 1); + bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, + ((rsp->rsplen >> 2) - 1)); + memcpy(&wqe->words[16], rsp->rspaddr, rsp->rsplen); + } + + /* Use rspbuf, NOT sg list */ + rsp->sg_cnt = 0; + sgl->word2 = 0; + atomic_inc(&tgtp->xmt_fcp_rsp); + break; + + default: + lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, + "6064 Unknown Rsp Op %d\n", + rsp->op); + return NULL; + } + + nvmewqe->retry = 1; + nvmewqe->vport = phba->pport; + nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; + nvmewqe->context1 = ndlp; + + for (i = 0; i < rsp->sg_cnt; i++) { + sgel = &rsp->sg[i]; + physaddr = sg_dma_address(sgel); + cnt = sg_dma_len(sgel); + sgl->addr_hi = putPaddrHigh(physaddr); + sgl->addr_lo = putPaddrLow(physaddr); + sgl->word2 = 0; + bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); + bf_set(lpfc_sli4_sge_offset, sgl, ctxp->offset); + if ((i+1) == rsp->sg_cnt) + bf_set(lpfc_sli4_sge_last, sgl, 1); + sgl->word2 = cpu_to_le32(sgl->word2); + sgl->sge_len = cpu_to_le32(cnt); + sgl++; + ctxp->offset += cnt; + } + return nvmewqe; +} + +/** + * lpfc_nvmet_sol_fcp_abort_cmp - Completion handler for ABTS + * @phba: Pointer to HBA context object. + * @cmdwqe: Pointer to driver command WQE object. + * @wcqe: Pointer to driver response CQE object. + * + * The function is called from SLI ring event handler with no + * lock held. This function is the completion handler for NVME ABTS for FCP cmds + * The function frees memory resources used for the NVME commands. + **/ +static void +lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, + struct lpfc_wcqe_complete *wcqe) +{ + struct lpfc_nvmet_rcv_ctx *ctxp; + struct lpfc_nvmet_tgtport *tgtp; + uint32_t status, result; + + ctxp = cmdwqe->context2; + status = bf_get(lpfc_wcqe_c_status, wcqe); + result = wcqe->parameter; + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + atomic_inc(&tgtp->xmt_abort_cmpl); + + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, + "6165 Abort cmpl: xri x%x WCQE: %08x %08x %08x %08x\n", + ctxp->oxid, wcqe->word0, wcqe->total_data_placed, + result, wcqe->word3); + + ctxp->state = LPFC_NVMET_STE_DONE; + lpfc_nvmet_rq_post(phba, ctxp, &ctxp->rqb_buffer->hbuf); + + cmdwqe->context2 = NULL; + cmdwqe->context3 = NULL; + lpfc_sli_release_iocbq(phba, cmdwqe); +} + +/** + * lpfc_nvmet_xmt_fcp_abort_cmp - Completion handler for ABTS + * @phba: Pointer to HBA context object. + * @cmdwqe: Pointer to driver command WQE object. + * @wcqe: Pointer to driver response CQE object. + * + * The function is called from SLI ring event handler with no + * lock held. This function is the completion handler for NVME ABTS for FCP cmds + * The function frees memory resources used for the NVME commands. + **/ +static void +lpfc_nvmet_xmt_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, + struct lpfc_wcqe_complete *wcqe) +{ + struct lpfc_nvmet_rcv_ctx *ctxp; + struct lpfc_nvmet_tgtport *tgtp; + uint32_t status, result; + + ctxp = cmdwqe->context2; + status = bf_get(lpfc_wcqe_c_status, wcqe); + result = wcqe->parameter; + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + atomic_inc(&tgtp->xmt_abort_cmpl); + + lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, + "6070 Abort cmpl: ctx %p WCQE: %08x %08x %08x %08x\n", + ctxp, wcqe->word0, wcqe->total_data_placed, + result, wcqe->word3); + + if (ctxp) { + /* Sanity check */ + if (ctxp->state != LPFC_NVMET_STE_ABORT) { + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, + "6112 ABORT Wrong state:%d oxid x%x\n", + ctxp->state, ctxp->oxid); + } + ctxp->state = LPFC_NVMET_STE_DONE; + lpfc_nvmet_rq_post(phba, ctxp, &ctxp->rqb_buffer->hbuf); + cmdwqe->context2 = NULL; + cmdwqe->context3 = NULL; + } +} + +/** + * lpfc_nvmet_xmt_ls_abort_cmp - Completion handler for ABTS + * @phba: Pointer to HBA context object. + * @cmdwqe: Pointer to driver command WQE object. + * @wcqe: Pointer to driver response CQE object. + * + * The function is called from SLI ring event handler with no + * lock held. This function is the completion handler for NVME ABTS for LS cmds + * The function frees memory resources used for the NVME commands. + **/ +static void +lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, + struct lpfc_wcqe_complete *wcqe) +{ + struct lpfc_nvmet_rcv_ctx *ctxp; + struct lpfc_nvmet_tgtport *tgtp; + uint32_t status, result; + + ctxp = cmdwqe->context2; + status = bf_get(lpfc_wcqe_c_status, wcqe); + result = wcqe->parameter; + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + atomic_inc(&tgtp->xmt_abort_cmpl); + + lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, + "6083 Abort cmpl: ctx %p WCQE: %08x %08x %08x %08x\n", + ctxp, wcqe->word0, wcqe->total_data_placed, + result, wcqe->word3); + + if (ctxp) { + cmdwqe->context2 = NULL; + cmdwqe->context3 = NULL; + lpfc_sli_release_iocbq(phba, cmdwqe); + kfree(ctxp); + } else + lpfc_sli_release_iocbq(phba, cmdwqe); +} + +static int +lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba, + struct lpfc_nvmet_rcv_ctx *ctxp, + uint32_t sid, uint16_t xri) +{ + struct lpfc_nvmet_tgtport *tgtp; + struct lpfc_iocbq *abts_wqeq; + union lpfc_wqe *wqe_abts; + struct lpfc_nodelist *ndlp; + + lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, + "6067 %s: Entrypoint: sid %x xri %x\n", __func__, + sid, xri); + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + + ndlp = lpfc_findnode_did(phba->pport, sid); + if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || + ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && + (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { + atomic_inc(&tgtp->xmt_abort_rsp_error); + lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS, + "6134 Drop ABTS - wrong NDLP state x%x.\n", + ndlp->nlp_state); + + /* No failure to an ABTS request. */ + return 0; + } + + abts_wqeq = ctxp->wqeq; + wqe_abts = &abts_wqeq->wqe; + ctxp->state = LPFC_NVMET_STE_ABORT; + + /* + * Since we zero the whole WQE, we need to ensure we set the WQE fields + * that were initialized in lpfc_sli4_nvmet_alloc. + */ + memset(wqe_abts, 0, sizeof(union lpfc_wqe)); + + /* Word 5 */ + bf_set(wqe_dfctl, &wqe_abts->xmit_sequence.wge_ctl, 0); + bf_set(wqe_ls, &wqe_abts->xmit_sequence.wge_ctl, 1); + bf_set(wqe_la, &wqe_abts->xmit_sequence.wge_ctl, 0); + bf_set(wqe_rctl, &wqe_abts->xmit_sequence.wge_ctl, FC_RCTL_BA_ABTS); + bf_set(wqe_type, &wqe_abts->xmit_sequence.wge_ctl, FC_TYPE_BLS); + + /* Word 6 */ + bf_set(wqe_ctxt_tag, &wqe_abts->xmit_sequence.wqe_com, + phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); + bf_set(wqe_xri_tag, &wqe_abts->xmit_sequence.wqe_com, + abts_wqeq->sli4_xritag); + + /* Word 7 */ + bf_set(wqe_cmnd, &wqe_abts->xmit_sequence.wqe_com, + CMD_XMIT_SEQUENCE64_WQE); + bf_set(wqe_ct, &wqe_abts->xmit_sequence.wqe_com, SLI4_CT_RPI); + bf_set(wqe_class, &wqe_abts->xmit_sequence.wqe_com, CLASS3); + bf_set(wqe_pu, &wqe_abts->xmit_sequence.wqe_com, 0); + + /* Word 8 */ + wqe_abts->xmit_sequence.wqe_com.abort_tag = abts_wqeq->iotag; + + /* Word 9 */ + bf_set(wqe_reqtag, &wqe_abts->xmit_sequence.wqe_com, abts_wqeq->iotag); + /* Needs to be set by caller */ + bf_set(wqe_rcvoxid, &wqe_abts->xmit_sequence.wqe_com, xri); + + /* Word 10 */ + bf_set(wqe_dbde, &wqe_abts->xmit_sequence.wqe_com, 1); + bf_set(wqe_iod, &wqe_abts->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE); + bf_set(wqe_lenloc, &wqe_abts->xmit_sequence.wqe_com, + LPFC_WQE_LENLOC_WORD12); + bf_set(wqe_ebde_cnt, &wqe_abts->xmit_sequence.wqe_com, 0); + bf_set(wqe_qosd, &wqe_abts->xmit_sequence.wqe_com, 0); + + /* Word 11 */ + bf_set(wqe_cqid, &wqe_abts->xmit_sequence.wqe_com, + LPFC_WQE_CQ_ID_DEFAULT); + bf_set(wqe_cmd_type, &wqe_abts->xmit_sequence.wqe_com, + OTHER_COMMAND); + + abts_wqeq->vport = phba->pport; + abts_wqeq->context1 = ndlp; + abts_wqeq->context2 = ctxp; + abts_wqeq->context3 = NULL; + abts_wqeq->rsvd2 = 0; + /* hba_wqidx should already be setup from command we are aborting */ + abts_wqeq->iocb.ulpCommand = CMD_XMIT_SEQUENCE64_CR; + abts_wqeq->iocb.ulpLe = 1; + + lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, + "6069 Issue ABTS to xri x%x reqtag x%x\n", + xri, abts_wqeq->iotag); + return 1; +} + +static int +lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba, + struct lpfc_nvmet_rcv_ctx *ctxp, + uint32_t sid, uint16_t xri) +{ + struct lpfc_nvmet_tgtport *tgtp; + struct lpfc_iocbq *abts_wqeq; + union lpfc_wqe *abts_wqe; + struct lpfc_nodelist *ndlp; + unsigned long flags; + int rc; + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + if (!ctxp->wqeq) { + ctxp->wqeq = ctxp->rqb_buffer->iocbq; + ctxp->wqeq->hba_wqidx = 0; + } + + ndlp = lpfc_findnode_did(phba->pport, sid); + if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || + ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && + (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { + atomic_inc(&tgtp->xmt_abort_rsp_error); + lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS, + "6160 Drop ABTS - wrong NDLP state x%x.\n", + ndlp->nlp_state); + + /* No failure to an ABTS request. */ + return 0; + } + + /* Issue ABTS for this WQE based on iotag */ + ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba); + if (!ctxp->abort_wqeq) { + lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS, + "6161 Abort failed: No wqeqs: " + "xri: x%x\n", ctxp->oxid); + /* No failure to an ABTS request. */ + return 0; + } + abts_wqeq = ctxp->abort_wqeq; + abts_wqe = &abts_wqeq->wqe; + ctxp->state = LPFC_NVMET_STE_ABORT; + + /* Announce entry to new IO submit field. */ + lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, + "6162 Abort Request to rport DID x%06x " + "for xri x%x x%x\n", + ctxp->sid, ctxp->oxid, ctxp->wqeq->sli4_xritag); + + /* If the hba is getting reset, this flag is set. It is + * cleared when the reset is complete and rings reestablished. + */ + spin_lock_irqsave(&phba->hbalock, flags); + /* driver queued commands are in process of being flushed */ + if (phba->hba_flag & HBA_NVME_IOQ_FLUSH) { + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME, + "6163 Driver in reset cleanup - flushing " + "NVME Req now. hba_flag x%x oxid x%x\n", + phba->hba_flag, ctxp->oxid); + lpfc_sli_release_iocbq(phba, abts_wqeq); + return 0; + } + + /* Outstanding abort is in progress */ + if (abts_wqeq->iocb_flag & LPFC_DRIVER_ABORTED) { + spin_unlock_irqrestore(&phba->hbalock, flags); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME, + "6164 Outstanding NVME I/O Abort Request " + "still pending on oxid x%x\n", + ctxp->oxid); + lpfc_sli_release_iocbq(phba, abts_wqeq); + return 0; + } + + /* Ready - mark outstanding as aborted by driver. */ + abts_wqeq->iocb_flag |= LPFC_DRIVER_ABORTED; + + /* WQEs are reused. Clear stale data and set key fields to + * zero like ia, iaab, iaar, xri_tag, and ctxt_tag. + */ + memset(abts_wqe, 0, sizeof(union lpfc_wqe)); + + /* word 3 */ + bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG); + + /* word 7 */ + bf_set(wqe_ct, &abts_wqe->abort_cmd.wqe_com, 0); + bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX); + + /* word 8 - tell the FW to abort the IO associated with this + * outstanding exchange ID. + */ + abts_wqe->abort_cmd.wqe_com.abort_tag = ctxp->wqeq->sli4_xritag; + + /* word 9 - this is the iotag for the abts_wqe completion. */ + bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com, + abts_wqeq->iotag); + + /* word 10 */ + bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1); + bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE); + + /* word 11 */ + bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND); + bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1); + bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); + + /* ABTS WQE must go to the same WQ as the WQE to be aborted */ + abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx; + abts_wqeq->wqe_cmpl = lpfc_nvmet_sol_fcp_abort_cmp; + abts_wqeq->iocb_cmpl = 0; + abts_wqeq->iocb_flag |= LPFC_IO_NVME; + abts_wqeq->context2 = ctxp; + rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_wqeq); + spin_unlock_irqrestore(&phba->hbalock, flags); + if (rc == WQE_SUCCESS) + return 0; + + lpfc_sli_release_iocbq(phba, abts_wqeq); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME, + "6166 Failed abts issue_wqe with status x%x " + "for oxid x%x.\n", + rc, ctxp->oxid); + return 1; +} + + +static int +lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba, + struct lpfc_nvmet_rcv_ctx *ctxp, + uint32_t sid, uint16_t xri) +{ + struct lpfc_nvmet_tgtport *tgtp; + struct lpfc_iocbq *abts_wqeq; + unsigned long flags; + int rc; + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + if (!ctxp->wqeq) { + ctxp->wqeq = ctxp->rqb_buffer->iocbq; + ctxp->wqeq->hba_wqidx = 0; + } + + rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri); + if (rc == 0) + goto aerr; + + spin_lock_irqsave(&phba->hbalock, flags); + abts_wqeq = ctxp->wqeq; + abts_wqeq->wqe_cmpl = lpfc_nvmet_xmt_fcp_abort_cmp; + abts_wqeq->iocb_cmpl = 0; + abts_wqeq->iocb_flag |= LPFC_IO_NVMET; + rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_wqeq); + spin_unlock_irqrestore(&phba->hbalock, flags); + if (rc == WQE_SUCCESS) { + atomic_inc(&tgtp->xmt_abort_rsp); + return 0; + } + +aerr: + lpfc_nvmet_rq_post(phba, ctxp, &ctxp->rqb_buffer->hbuf); + atomic_inc(&tgtp->xmt_abort_rsp_error); + lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS, + "6135 Failed to Issue ABTS for oxid x%x. Status x%x\n", + ctxp->oxid, rc); + return 1; +} + +static int +lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba, + struct lpfc_nvmet_rcv_ctx *ctxp, + uint32_t sid, uint16_t xri) +{ + struct lpfc_nvmet_tgtport *tgtp; + struct lpfc_iocbq *abts_wqeq; + union lpfc_wqe *wqe_abts; + unsigned long flags; + int rc; + + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + if (!ctxp->wqeq) { + /* Issue ABTS for this WQE based on iotag */ + ctxp->wqeq = lpfc_sli_get_iocbq(phba); + if (!ctxp->wqeq) { + lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS, + "6068 Abort failed: No wqeqs: " + "xri: x%x\n", xri); + /* No failure to an ABTS request. */ + kfree(ctxp); + return 0; + } + } + abts_wqeq = ctxp->wqeq; + wqe_abts = &abts_wqeq->wqe; + lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri); + + spin_lock_irqsave(&phba->hbalock, flags); + abts_wqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_abort_cmp; + abts_wqeq->iocb_cmpl = 0; + abts_wqeq->iocb_flag |= LPFC_IO_NVME_LS; + rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, abts_wqeq); + spin_unlock_irqrestore(&phba->hbalock, flags); + if (rc == WQE_SUCCESS) { + atomic_inc(&tgtp->xmt_abort_rsp); + return 0; + } + + atomic_inc(&tgtp->xmt_abort_rsp_error); + abts_wqeq->context2 = NULL; + abts_wqeq->context3 = NULL; + lpfc_sli_release_iocbq(phba, abts_wqeq); + kfree(ctxp); + lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS, + "6056 Failed to Issue ABTS. Status x%x\n", rc); + return 0; +} |