enum nvmet_fcp_datadir io_dir;
bool active;
bool abort;
+ bool aborted;
+ bool writedataactive;
spinlock_t flock;
struct nvmet_req req;
fod->tgtport = tgtport;
fod->queue = queue;
fod->active = false;
+ fod->abort = false;
+ fod->aborted = false;
+ fod->fcpreq = NULL;
list_add_tail(&fod->fcp_list, &queue->fod_list);
spin_lock_init(&fod->flock);
if (fod) {
list_del(&fod->fcp_list);
fod->active = true;
- fod->abort = false;
/*
* no queue reference is taken, as it was taken by the
* queue lookup just prior to the allocation. The iod
struct nvmet_fc_tgtport *tgtport = fod->tgtport;
unsigned long flags;
+ fc_dma_sync_single_for_cpu(tgtport->dev, fod->rspdma,
+ sizeof(fod->rspiubuf), DMA_TO_DEVICE);
+
+ fcpreq->nvmet_fc_private = NULL;
+
spin_lock_irqsave(&queue->qlock, flags);
list_add_tail(&fod->fcp_list, &fod->queue->fod_list);
fod->active = false;
+ fod->abort = false;
+ fod->aborted = false;
+ fod->writedataactive = false;
+ fod->fcpreq = NULL;
spin_unlock_irqrestore(&queue->qlock, flags);
/*
}
-static void
-nvmet_fc_abort_op(struct nvmet_fc_tgtport *tgtport,
- struct nvmefc_tgt_fcp_req *fcpreq)
-{
- int ret;
-
- fcpreq->op = NVMET_FCOP_ABORT;
- fcpreq->offset = 0;
- fcpreq->timeout = 0;
- fcpreq->transfer_length = 0;
- fcpreq->transferred_length = 0;
- fcpreq->fcp_error = 0;
- fcpreq->sg_cnt = 0;
-
- ret = tgtport->ops->fcp_op(&tgtport->fc_target_port, fcpreq);
- if (ret)
- /* should never reach here !! */
- WARN_ON(1);
-}
-
-
static void
nvmet_fc_delete_target_queue(struct nvmet_fc_tgt_queue *queue)
{
+ struct nvmet_fc_tgtport *tgtport = queue->assoc->tgtport;
struct nvmet_fc_fcp_iod *fod = queue->fod;
unsigned long flags;
- int i;
+ int i, writedataactive;
bool disconnect;
disconnect = atomic_xchg(&queue->connected, 0);
if (fod->active) {
spin_lock(&fod->flock);
fod->abort = true;
+ writedataactive = fod->writedataactive;
spin_unlock(&fod->flock);
+ /*
+ * only call lldd abort routine if waiting for
+ * writedata. other outstanding ops should finish
+ * on their own.
+ */
+ if (writedataactive) {
+ spin_lock(&fod->flock);
+ fod->aborted = true;
+ spin_unlock(&fod->flock);
+ tgtport->ops->fcp_abort(
+ &tgtport->fc_target_port, fod->fcpreq);
+ }
}
}
spin_unlock_irqrestore(&queue->qlock, flags);
int ret, idx;
if (!template->xmt_ls_rsp || !template->fcp_op ||
+ !template->fcp_abort ||
!template->fcp_req_release || !template->targetport_delete ||
!template->max_hw_queues || !template->max_sgl_segments ||
!template->max_dif_sgl_segments || !template->dma_boundary) {
static void nvmet_fc_xmt_fcp_op_done(struct nvmefc_tgt_fcp_req *fcpreq);
+static void
+nvmet_fc_abort_op(struct nvmet_fc_tgtport *tgtport,
+ struct nvmet_fc_fcp_iod *fod)
+{
+ struct nvmefc_tgt_fcp_req *fcpreq = fod->fcpreq;
+
+ /* data no longer needed */
+ nvmet_fc_free_tgt_pgs(fod);
+
+ /*
+ * if an ABTS was received or we issued the fcp_abort early
+ * don't call abort routine again.
+ */
+ /* no need to take lock - lock was taken earlier to get here */
+ if (!fod->aborted)
+ tgtport->ops->fcp_abort(&tgtport->fc_target_port, fcpreq);
+
+ nvmet_fc_free_fcp_iod(fod->queue, fod);
+}
+
static void
nvmet_fc_xmt_fcp_rsp(struct nvmet_fc_tgtport *tgtport,
struct nvmet_fc_fcp_iod *fod)
ret = tgtport->ops->fcp_op(&tgtport->fc_target_port, fod->fcpreq);
if (ret)
- nvmet_fc_abort_op(tgtport, fod->fcpreq);
+ nvmet_fc_abort_op(tgtport, fod);
}
static void
{
struct nvmefc_tgt_fcp_req *fcpreq = fod->fcpreq;
struct scatterlist *sg, *datasg;
+ unsigned long flags;
u32 tlen, sg_off;
int ret;
*/
fod->abort = true;
- if (op == NVMET_FCOP_WRITEDATA)
+ if (op == NVMET_FCOP_WRITEDATA) {
+ spin_lock_irqsave(&fod->flock, flags);
+ fod->writedataactive = false;
+ spin_unlock_irqrestore(&fod->flock, flags);
nvmet_req_complete(&fod->req,
NVME_SC_FC_TRANSPORT_ERROR);
- else /* NVMET_FCOP_READDATA or NVMET_FCOP_READDATA_RSP */ {
+ } else /* NVMET_FCOP_READDATA or NVMET_FCOP_READDATA_RSP */ {
fcpreq->fcp_error = ret;
fcpreq->transferred_length = 0;
nvmet_fc_xmt_fcp_op_done(fod->fcpreq);
}
}
+static inline bool
+__nvmet_fc_fod_op_abort(struct nvmet_fc_fcp_iod *fod, bool abort)
+{
+ struct nvmefc_tgt_fcp_req *fcpreq = fod->fcpreq;
+ struct nvmet_fc_tgtport *tgtport = fod->tgtport;
+
+ /* if in the middle of an io and we need to tear down */
+ if (abort) {
+ if (fcpreq->op == NVMET_FCOP_WRITEDATA) {
+ nvmet_req_complete(&fod->req,
+ NVME_SC_FC_TRANSPORT_ERROR);
+ return true;
+ }
+
+ nvmet_fc_abort_op(tgtport, fod);
+ return true;
+ }
+
+ return false;
+}
+
/*
* actual done handler for FCP operations when completed by the lldd
*/
spin_lock_irqsave(&fod->flock, flags);
abort = fod->abort;
+ fod->writedataactive = false;
spin_unlock_irqrestore(&fod->flock, flags);
- /* if in the middle of an io and we need to tear down */
- if (abort && fcpreq->op != NVMET_FCOP_ABORT) {
- /* data no longer needed */
- nvmet_fc_free_tgt_pgs(fod);
-
- nvmet_req_complete(&fod->req, fcpreq->fcp_error);
- return;
- }
-
switch (fcpreq->op) {
case NVMET_FCOP_WRITEDATA:
+ if (__nvmet_fc_fod_op_abort(fod, abort))
+ return;
if (fcpreq->fcp_error ||
fcpreq->transferred_length != fcpreq->transfer_length) {
+ spin_lock(&fod->flock);
+ fod->abort = true;
+ spin_unlock(&fod->flock);
+
nvmet_req_complete(&fod->req,
NVME_SC_FC_TRANSPORT_ERROR);
return;
fod->offset += fcpreq->transferred_length;
if (fod->offset != fod->total_length) {
+ spin_lock_irqsave(&fod->flock, flags);
+ fod->writedataactive = true;
+ spin_unlock_irqrestore(&fod->flock, flags);
+
/* transfer the next chunk */
nvmet_fc_transfer_fcp_data(tgtport, fod,
NVMET_FCOP_WRITEDATA);
case NVMET_FCOP_READDATA:
case NVMET_FCOP_READDATA_RSP:
+ if (__nvmet_fc_fod_op_abort(fod, abort))
+ return;
if (fcpreq->fcp_error ||
fcpreq->transferred_length != fcpreq->transfer_length) {
- /* data no longer needed */
- nvmet_fc_free_tgt_pgs(fod);
-
- nvmet_fc_abort_op(tgtport, fod->fcpreq);
+ nvmet_fc_abort_op(tgtport, fod);
return;
}
if (fcpreq->op == NVMET_FCOP_READDATA_RSP) {
/* data no longer needed */
nvmet_fc_free_tgt_pgs(fod);
- fc_dma_sync_single_for_cpu(tgtport->dev, fod->rspdma,
- sizeof(fod->rspiubuf), DMA_TO_DEVICE);
nvmet_fc_free_fcp_iod(fod->queue, fod);
return;
}
break;
case NVMET_FCOP_RSP:
- case NVMET_FCOP_ABORT:
- fc_dma_sync_single_for_cpu(tgtport->dev, fod->rspdma,
- sizeof(fod->rspiubuf), DMA_TO_DEVICE);
+ if (__nvmet_fc_fod_op_abort(fod, abort))
+ return;
nvmet_fc_free_fcp_iod(fod->queue, fod);
break;
default:
- nvmet_fc_free_tgt_pgs(fod);
- nvmet_fc_abort_op(tgtport, fod->fcpreq);
break;
}
}
fod->queue->sqhd = cqe->sq_head;
if (abort) {
- /* data no longer needed */
- nvmet_fc_free_tgt_pgs(fod);
-
- nvmet_fc_abort_op(tgtport, fod->fcpreq);
+ nvmet_fc_abort_op(tgtport, fod);
return;
}
&fod->queue->nvme_cq,
&fod->queue->nvme_sq,
&nvmet_fc_tgt_fcp_ops);
- if (!ret) { /* bad SQE content */
- nvmet_fc_abort_op(tgtport, fod->fcpreq);
+ if (!ret) { /* bad SQE content or invalid ctrl state */
+ nvmet_fc_abort_op(tgtport, fod);
return;
}
return;
transport_error:
- nvmet_fc_abort_op(tgtport, fod->fcpreq);
+ nvmet_fc_abort_op(tgtport, fod);
}
/*
(be16_to_cpu(cmdiu->iu_len) != (sizeof(*cmdiu)/4)))
return -EIO;
-
queue = nvmet_fc_find_target_queue(tgtport,
be64_to_cpu(cmdiu->connection_id));
if (!queue)
}
EXPORT_SYMBOL_GPL(nvmet_fc_rcv_fcp_req);
+/**
+ * nvmet_fc_rcv_fcp_abort - transport entry point called by an LLDD
+ * upon the reception of an ABTS for a FCP command
+ *
+ * Notify the transport that an ABTS has been received for a FCP command
+ * that had been given to the transport via nvmet_fc_rcv_fcp_req(). The
+ * LLDD believes the command is still being worked on
+ * (template_ops->fcp_req_release() has not been called).
+ *
+ * The transport will wait for any outstanding work (an op to the LLDD,
+ * which the lldd should complete with error due to the ABTS; or the
+ * completion from the nvmet layer of the nvme command), then will
+ * stop processing and call the nvmet_fc_rcv_fcp_req() callback to
+ * return the i/o context to the LLDD. The LLDD may send the BA_ACC
+ * to the ABTS either after return from this function (assuming any
+ * outstanding op work has been terminated) or upon the callback being
+ * called.
+ *
+ * @target_port: pointer to the (registered) target port the FCP CMD IU
+ * was received on.
+ * @fcpreq: pointer to the fcpreq request structure that corresponds
+ * to the exchange that received the ABTS.
+ */
+void
+nvmet_fc_rcv_fcp_abort(struct nvmet_fc_target_port *target_port,
+ struct nvmefc_tgt_fcp_req *fcpreq)
+{
+ struct nvmet_fc_fcp_iod *fod = fcpreq->nvmet_fc_private;
+ struct nvmet_fc_tgt_queue *queue;
+ unsigned long flags;
+
+ if (!fod || fod->fcpreq != fcpreq)
+ /* job appears to have already completed, ignore abort */
+ return;
+
+ queue = fod->queue;
+
+ spin_lock_irqsave(&queue->qlock, flags);
+ if (fod->active) {
+ /*
+ * mark as abort. The abort handler, invoked upon completion
+ * of any work, will detect the aborted status and do the
+ * callback.
+ */
+ spin_lock(&fod->flock);
+ fod->abort = true;
+ fod->aborted = true;
+ spin_unlock(&fod->flock);
+ }
+ spin_unlock_irqrestore(&queue->qlock, flags);
+}
+EXPORT_SYMBOL_GPL(nvmet_fc_rcv_fcp_abort);
+
enum {
FCT_TRADDR_ERR = 0,
FCT_TRADDR_WWNN = 1 << 0,
struct fcloop_fcpreq {
struct fcloop_tport *tport;
struct nvmefc_fcp_req *fcpreq;
+ spinlock_t reqlock;
u16 status;
+ bool active;
+ bool aborted;
struct work_struct work;
struct nvmefc_tgt_fcp_req tgt_fcp_req;
};
struct fcloop_ini_fcpreq {
struct nvmefc_fcp_req *fcpreq;
struct fcloop_fcpreq *tfcp_req;
+ struct work_struct iniwork;
};
static inline struct fcloop_lsreq *
}
/*
- * FCP IO operation done. call back up initiator "done" flows.
+ * FCP IO operation done by initiator abort.
+ * call back up initiator "done" flows.
+ */
+static void
+fcloop_tgt_fcprqst_ini_done_work(struct work_struct *work)
+{
+ struct fcloop_ini_fcpreq *inireq =
+ container_of(work, struct fcloop_ini_fcpreq, iniwork);
+
+ inireq->fcpreq->done(inireq->fcpreq);
+}
+
+/*
+ * FCP IO operation done by target completion.
+ * call back up initiator "done" flows.
*/
static void
fcloop_tgt_fcprqst_done_work(struct work_struct *work)
struct fcloop_fcpreq *tfcp_req =
container_of(work, struct fcloop_fcpreq, work);
struct fcloop_tport *tport = tfcp_req->tport;
- struct nvmefc_fcp_req *fcpreq = tfcp_req->fcpreq;
+ struct nvmefc_fcp_req *fcpreq;
+
+ spin_lock(&tfcp_req->reqlock);
+ fcpreq = tfcp_req->fcpreq;
+ spin_unlock(&tfcp_req->reqlock);
- if (tport->remoteport) {
+ if (tport->remoteport && fcpreq) {
fcpreq->status = tfcp_req->status;
fcpreq->done(fcpreq);
}
inireq->fcpreq = fcpreq;
inireq->tfcp_req = tfcp_req;
+ INIT_WORK(&inireq->iniwork, fcloop_tgt_fcprqst_ini_done_work);
tfcp_req->fcpreq = fcpreq;
tfcp_req->tport = rport->targetport->private;
+ spin_lock_init(&tfcp_req->reqlock);
INIT_WORK(&tfcp_req->work, fcloop_tgt_fcprqst_done_work);
ret = nvmet_fc_rcv_fcp_req(rport->targetport, &tfcp_req->tgt_fcp_req,
struct nvmefc_tgt_fcp_req *tgt_fcpreq)
{
struct fcloop_fcpreq *tfcp_req = tgt_fcp_req_to_fcpreq(tgt_fcpreq);
- struct nvmefc_fcp_req *fcpreq = tfcp_req->fcpreq;
+ struct nvmefc_fcp_req *fcpreq;
u32 rsplen = 0, xfrlen = 0;
- int fcp_err = 0;
+ int fcp_err = 0, active, aborted;
u8 op = tgt_fcpreq->op;
+ spin_lock(&tfcp_req->reqlock);
+ fcpreq = tfcp_req->fcpreq;
+ active = tfcp_req->active;
+ aborted = tfcp_req->aborted;
+ tfcp_req->active = true;
+ spin_unlock(&tfcp_req->reqlock);
+
+ if (unlikely(active))
+ /* illegal - call while i/o active */
+ return -EALREADY;
+
+ if (unlikely(aborted)) {
+ /* target transport has aborted i/o prior */
+ spin_lock(&tfcp_req->reqlock);
+ tfcp_req->active = false;
+ spin_unlock(&tfcp_req->reqlock);
+ tgt_fcpreq->transferred_length = 0;
+ tgt_fcpreq->fcp_error = -ECANCELED;
+ tgt_fcpreq->done(tgt_fcpreq);
+ return 0;
+ }
+
+ /*
+ * if fcpreq is NULL, the I/O has been aborted (from
+ * initiator side). For the target side, act as if all is well
+ * but don't actually move data.
+ */
+
switch (op) {
case NVMET_FCOP_WRITEDATA:
xfrlen = tgt_fcpreq->transfer_length;
- fcloop_fcp_copy_data(op, tgt_fcpreq->sg, fcpreq->first_sgl,
- tgt_fcpreq->offset, xfrlen);
- fcpreq->transferred_length += xfrlen;
+ if (fcpreq) {
+ fcloop_fcp_copy_data(op, tgt_fcpreq->sg,
+ fcpreq->first_sgl, tgt_fcpreq->offset,
+ xfrlen);
+ fcpreq->transferred_length += xfrlen;
+ }
break;
case NVMET_FCOP_READDATA:
case NVMET_FCOP_READDATA_RSP:
xfrlen = tgt_fcpreq->transfer_length;
- fcloop_fcp_copy_data(op, tgt_fcpreq->sg, fcpreq->first_sgl,
- tgt_fcpreq->offset, xfrlen);
- fcpreq->transferred_length += xfrlen;
+ if (fcpreq) {
+ fcloop_fcp_copy_data(op, tgt_fcpreq->sg,
+ fcpreq->first_sgl, tgt_fcpreq->offset,
+ xfrlen);
+ fcpreq->transferred_length += xfrlen;
+ }
if (op == NVMET_FCOP_READDATA)
break;
/* Fall-Thru to RSP handling */
case NVMET_FCOP_RSP:
- rsplen = ((fcpreq->rsplen < tgt_fcpreq->rsplen) ?
- fcpreq->rsplen : tgt_fcpreq->rsplen);
- memcpy(fcpreq->rspaddr, tgt_fcpreq->rspaddr, rsplen);
- if (rsplen < tgt_fcpreq->rsplen)
- fcp_err = -E2BIG;
- fcpreq->rcv_rsplen = rsplen;
- fcpreq->status = 0;
+ if (fcpreq) {
+ rsplen = ((fcpreq->rsplen < tgt_fcpreq->rsplen) ?
+ fcpreq->rsplen : tgt_fcpreq->rsplen);
+ memcpy(fcpreq->rspaddr, tgt_fcpreq->rspaddr, rsplen);
+ if (rsplen < tgt_fcpreq->rsplen)
+ fcp_err = -E2BIG;
+ fcpreq->rcv_rsplen = rsplen;
+ fcpreq->status = 0;
+ }
tfcp_req->status = 0;
break;
- case NVMET_FCOP_ABORT:
- tfcp_req->status = NVME_SC_FC_TRANSPORT_ABORTED;
- break;
-
default:
fcp_err = -EINVAL;
break;
}
+ spin_lock(&tfcp_req->reqlock);
+ tfcp_req->active = false;
+ spin_unlock(&tfcp_req->reqlock);
+
tgt_fcpreq->transferred_length = xfrlen;
tgt_fcpreq->fcp_error = fcp_err;
tgt_fcpreq->done(tgt_fcpreq);
return 0;
}
+static void
+fcloop_tgt_fcp_abort(struct nvmet_fc_target_port *tgtport,
+ struct nvmefc_tgt_fcp_req *tgt_fcpreq)
+{
+ struct fcloop_fcpreq *tfcp_req = tgt_fcp_req_to_fcpreq(tgt_fcpreq);
+ int active;
+
+ /*
+ * mark aborted only in case there were 2 threads in transport
+ * (one doing io, other doing abort) and only kills ops posted
+ * after the abort request
+ */
+ spin_lock(&tfcp_req->reqlock);
+ active = tfcp_req->active;
+ tfcp_req->aborted = true;
+ spin_unlock(&tfcp_req->reqlock);
+
+ tfcp_req->status = NVME_SC_FC_TRANSPORT_ABORTED;
+
+ /*
+ * nothing more to do. If io wasn't active, the transport should
+ * immediately call the req_release. If it was active, the op
+ * will complete, and the lldd should call req_release.
+ */
+}
+
static void
fcloop_fcp_req_release(struct nvmet_fc_target_port *tgtport,
struct nvmefc_tgt_fcp_req *tgt_fcpreq)
void *hw_queue_handle,
struct nvmefc_fcp_req *fcpreq)
{
+ struct fcloop_rport *rport = remoteport->private;
+ struct fcloop_ini_fcpreq *inireq = fcpreq->private;
+ struct fcloop_fcpreq *tfcp_req = inireq->tfcp_req;
+
+ if (!tfcp_req)
+ /* abort has already been called */
+ return;
+
+ if (rport->targetport)
+ nvmet_fc_rcv_fcp_abort(rport->targetport,
+ &tfcp_req->tgt_fcp_req);
+
+ /* break initiator/target relationship for io */
+ spin_lock(&tfcp_req->reqlock);
+ inireq->tfcp_req = NULL;
+ tfcp_req->fcpreq = NULL;
+ spin_unlock(&tfcp_req->reqlock);
+
+ /* post the aborted io completion */
+ fcpreq->status = -ECANCELED;
+ schedule_work(&inireq->iniwork);
}
static void
.targetport_delete = fcloop_targetport_delete,
.xmt_ls_rsp = fcloop_xmt_ls_rsp,
.fcp_op = fcloop_fcp_op,
+ .fcp_abort = fcloop_tgt_fcp_abort,
.fcp_req_release = fcloop_fcp_req_release,
.max_hw_queues = FCLOOP_HW_QUEUES,
.max_sgl_segments = FCLOOP_SGL_SEGS,
}
#endif
- 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);
-
- lpfc_nvmeio_data(phba, "NVMET FCP ABRT: "
- "xri x%x state x%x cnt x%x\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);
complete(&tport->tport_unreg_done);
}
+static void
+lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport,
+ struct nvmefc_tgt_fcp_req *req)
+{
+ struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
+ struct lpfc_nvmet_rcv_ctx *ctxp =
+ container_of(req, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
+ struct lpfc_hba *phba = ctxp->phba;
+
+ 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);
+
+ lpfc_nvmeio_data(phba, "NVMET FCP ABRT: xri x%x state x%x cnt x%x\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);
+}
+
static void
lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport,
struct nvmefc_tgt_fcp_req *rsp)
.targetport_delete = lpfc_nvmet_targetport_delete,
.xmt_ls_rsp = lpfc_nvmet_xmt_ls_rsp,
.fcp_op = lpfc_nvmet_xmt_fcp_op,
+ .fcp_abort = lpfc_nvmet_xmt_fcp_abort,
.fcp_req_release = lpfc_nvmet_xmt_fcp_release,
.max_hw_queues = 1,
* rsp as well
*/
NVMET_FCOP_RSP = 4, /* send rsp frame */
- NVMET_FCOP_ABORT = 5, /* abort exchange via ABTS */
- NVMET_FCOP_BA_ACC = 6, /* send BA_ACC */
- NVMET_FCOP_BA_RJT = 7, /* send BA_RJT */
};
/**
* upon compeletion of the operation. The nvmet-fc layer will also set a
* private pointer for its own use in the done routine.
*
- * Note: the LLDD must never fail a NVMET_FCOP_ABORT request !!
- *
* Values set by the NVMET-FC layer prior to calling the LLDD fcp_op
* entrypoint.
* @op: Indicates the FCP IU operation to perform (see NVMET_FCOP_xxx)
* or upon success/failure of FCP_CONF if it is supported, the
* LLDD is to set the nvmefc_tgt_fcp_req fcp_error field and
* consider the operation complete.
- * NVMET_FCOP_ABORT: the LLDD is to terminate the exchange
- * corresponding to the fcp operation. The LLDD shall send
- * ABTS and follow FC exchange abort-multi rules, including
- * ABTS retries and possible logout.
* Upon completing the indicated operation, the LLDD is to set the
* status fields for the operation (tranferred_length and fcp_error
* status) in the request, then call the "done" routine
* Returns 0 on success, -<errno> on failure (Ex: -EIO)
* Entrypoint is Mandatory.
*
+ * @fcp_abort: Called by the transport to abort an active command.
+ * The command may be in-between operations (nothing active in LLDD)
+ * or may have an active WRITEDATA operation pending. The LLDD is to
+ * initiate the ABTS process for the command and return from the
+ * callback. The ABTS does not need to be complete on the command.
+ * The fcp_abort callback inherently cannot fail. After the
+ * fcp_abort() callback completes, the transport will wait for any
+ * outstanding operation (if there was one) to complete, then will
+ * call the fcp_req_release() callback to return the command's
+ * exchange context back to the LLDD.
+ *
* @fcp_req_release: Called by the transport to return a nvmefc_tgt_fcp_req
* to the LLDD after all operations on the fcp operation are complete.
* This may be due to the command completing or upon completion of
struct nvmefc_tgt_ls_req *tls_req);
int (*fcp_op)(struct nvmet_fc_target_port *tgtport,
struct nvmefc_tgt_fcp_req *fcpreq);
+ void (*fcp_abort)(struct nvmet_fc_target_port *tgtport,
+ struct nvmefc_tgt_fcp_req *fcpreq);
void (*fcp_req_release)(struct nvmet_fc_target_port *tgtport,
struct nvmefc_tgt_fcp_req *fcpreq);
struct nvmefc_tgt_fcp_req *fcpreq,
void *cmdiubuf, u32 cmdiubuf_len);
+void nvmet_fc_rcv_fcp_abort(struct nvmet_fc_target_port *tgtport,
+ struct nvmefc_tgt_fcp_req *fcpreq);
+
#endif /* _NVME_FC_DRIVER_H */
projects / openwrt / staging / blogic.git / commitdiff