static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *,
struct lpfc_async_xchg_ctx *,
uint32_t, uint16_t);
-static int lpfc_nvmet_unsol_ls_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 *);
ctxp->oxid);
lpfc_in_buf_free(phba, &nvmebuf->dbuf);
atomic_inc(&nvmep->xmt_ls_abort);
- lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp,
+ lpfc_nvme_unsol_ls_issue_abort(phba, ctxp,
ctxp->sid, ctxp->oxid);
return -ENOMEM;
}
lpfc_in_buf_free(phba, &nvmebuf->dbuf);
atomic_inc(&nvmep->xmt_ls_abort);
- lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid);
+ lpfc_nvme_unsol_ls_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid);
return -ENXIO;
}
}
/**
- * lpfc_nvmet_unsol_ls_buffer - Process an unsolicited event data buffer
+ * lpfc_nvmet_handle_lsreq - Process an NVME LS request
* @phba: pointer to lpfc hba data structure.
- * @pring: pointer to a SLI ring.
- * @nvmebuf: pointer to lpfc nvme command HBQ data structure.
+ * @axchg: pointer to exchange context for the NVME LS request
*
- * 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)
+ * 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;
- struct fc_frame_header *fc_hdr;
- struct lpfc_async_xchg_ctx *ctxp;
- uint32_t *payload;
- uint32_t size, oxid, sid, rc;
-
-
- if (!nvmebuf || !phba->targetport) {
- lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
- "6154 LS Drop IO\n");
- oxid = 0;
- size = 0;
- sid = 0;
- ctxp = NULL;
- goto dropit;
- }
-
- 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;
- payload = (uint32_t *)(nvmebuf->dbuf.virt);
- size = bf_get(lpfc_rcqe_length, &nvmebuf->cq_event.cqe.rcqe_cmpl);
- sid = sli4_sid_from_fc_hdr(fc_hdr);
-
- ctxp = kzalloc(sizeof(struct lpfc_async_xchg_ctx), GFP_ATOMIC);
- if (ctxp == NULL) {
- atomic_inc(&tgtp->rcv_ls_req_drop);
- lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
- "6155 LS Drop IO x%x: Alloc\n",
- oxid);
-dropit:
- lpfc_nvmeio_data(phba, "NVMET LS DROP: "
- "xri x%x sz %d from %06x\n",
- oxid, size, sid);
- 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_NVME_STE_LS_RCV;
- ctxp->entry_cnt = 1;
- ctxp->rqb_buffer = (void *)nvmebuf;
- ctxp->hdwq = &phba->sli4_hba.hdwq[0];
+ struct lpfc_nvmet_tgtport *tgtp = phba->targetport->private;
+ uint32_t *payload = axchg->payload;
+ int rc;
- lpfc_nvmeio_data(phba, "NVMET LS RCV: xri x%x sz %d from %06x\n",
- oxid, size, sid);
- /*
- * The calling sequence should be:
- * nvmet_fc_rcv_ls_req -> lpfc_nvmet_xmt_ls_rsp/cmp ->_req->done
- * lpfc_nvmet_xmt_ls_rsp_cmp should free the allocated ctxp.
- */
atomic_inc(&tgtp->rcv_ls_req_in);
- rc = nvmet_fc_rcv_ls_req(phba->targetport, NULL, &ctxp->ls_rsp,
- payload, size);
+
+ rc = nvmet_fc_rcv_ls_req(phba->targetport, NULL, &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", size, rc,
+ "%08x %08x %08x\n", axchg->size, rc,
*payload, *(payload+1), *(payload+2),
*(payload+3), *(payload+4), *(payload+5));
- if (rc == 0) {
+ if (!rc) {
atomic_inc(&tgtp->rcv_ls_req_out);
- return;
+ return 0;
}
- lpfc_nvmeio_data(phba, "NVMET LS DROP: xri x%x sz %d from %06x\n",
- oxid, size, sid);
-
atomic_inc(&tgtp->rcv_ls_req_drop);
- lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
- "6156 LS Drop IO x%x: nvmet_fc_rcv_ls_req %d\n",
- ctxp->oxid, rc);
-
- /* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */
- lpfc_in_buf_free(phba, &nvmebuf->dbuf);
-
- atomic_inc(&tgtp->xmt_ls_abort);
- lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, sid, oxid);
#endif
+ return 1;
}
static void
}
}
-/**
- * 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 (!nvmebuf) {
- lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
- "3015 LS Drop IO\n");
- return;
- }
- 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.
return 1;
}
-static int
-lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba,
+/**
+ * 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)
{
return &hbq_entry->dbuf;
}
+/**
+ * lpfc_nvme_unsol_ls_handler - Process an unsolicited event data buffer
+ * containing a NVME LS request.
+ * @phba: pointer to lpfc hba data structure.
+ * @piocb: pointer to the iocbq struct representing the sequence starting
+ * frame.
+ *
+ * This routine initially validates the NVME LS, validates there is a login
+ * with the port that sent the LS, and then calls the appropriate nvme host
+ * or target LS request handler.
+ **/
+static void
+lpfc_nvme_unsol_ls_handler(struct lpfc_hba *phba, struct lpfc_iocbq *piocb)
+{
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_dmabuf *d_buf;
+ struct hbq_dmabuf *nvmebuf;
+ struct fc_frame_header *fc_hdr;
+ struct lpfc_async_xchg_ctx *axchg = NULL;
+ char *failwhy = NULL;
+ uint32_t oxid, sid, did, fctl, size;
+ int ret;
+
+ d_buf = piocb->context2;
+
+ nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
+ fc_hdr = nvmebuf->hbuf.virt;
+ oxid = be16_to_cpu(fc_hdr->fh_ox_id);
+ sid = sli4_sid_from_fc_hdr(fc_hdr);
+ did = sli4_did_from_fc_hdr(fc_hdr);
+ fctl = (fc_hdr->fh_f_ctl[0] << 16 |
+ fc_hdr->fh_f_ctl[1] << 8 |
+ fc_hdr->fh_f_ctl[2]);
+ size = bf_get(lpfc_rcqe_length, &nvmebuf->cq_event.cqe.rcqe_cmpl);
+
+ lpfc_nvmeio_data(phba, "NVME LS RCV: xri x%x sz %d from %06x\n",
+ oxid, size, sid);
+
+ if (phba->pport->load_flag & FC_UNLOADING) {
+ failwhy = "Driver Unloading";
+ } else if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) {
+ failwhy = "NVME FC4 Disabled";
+ } else if (!phba->nvmet_support && !phba->pport->localport) {
+ failwhy = "No Localport";
+ } else if (phba->nvmet_support && !phba->targetport) {
+ failwhy = "No Targetport";
+ } else if (unlikely(fc_hdr->fh_r_ctl != FC_RCTL_ELS4_REQ)) {
+ failwhy = "Bad NVME LS R_CTL";
+ } else if (unlikely((fctl & 0x00FF0000) !=
+ (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT))) {
+ failwhy = "Bad NVME LS F_CTL";
+ } else {
+ axchg = kzalloc(sizeof(*axchg), GFP_ATOMIC);
+ if (!axchg)
+ failwhy = "No CTX memory";
+ }
+
+ if (unlikely(failwhy)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC | LOG_NVME_IOERR,
+ "6154 Drop NVME LS: SID %06X OXID x%X: %s\n",
+ sid, oxid, failwhy);
+ goto out_fail;
+ }
+
+ /* validate the source of the LS is logged in */
+ 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))) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
+ "6216 NVME Unsol rcv: No ndlp: "
+ "NPort_ID x%x oxid x%x\n",
+ sid, oxid);
+ goto out_fail;
+ }
+
+ axchg->phba = phba;
+ axchg->ndlp = ndlp;
+ axchg->size = size;
+ axchg->oxid = oxid;
+ axchg->sid = sid;
+ axchg->wqeq = NULL;
+ axchg->state = LPFC_NVME_STE_LS_RCV;
+ axchg->entry_cnt = 1;
+ axchg->rqb_buffer = (void *)nvmebuf;
+ axchg->hdwq = &phba->sli4_hba.hdwq[0];
+ axchg->payload = nvmebuf->dbuf.virt;
+ INIT_LIST_HEAD(&axchg->list);
+
+ if (phba->nvmet_support)
+ ret = lpfc_nvmet_handle_lsreq(phba, axchg);
+ else
+ ret = lpfc_nvme_handle_lsreq(phba, axchg);
+
+ /* if zero, LS was successfully handled. If non-zero, LS not handled */
+ if (!ret)
+ return;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC | LOG_NVME_IOERR,
+ "6155 Drop NVME LS from DID %06X: SID %06X OXID x%X "
+ "NVMe%s handler failed %d\n",
+ did, sid, oxid,
+ (phba->nvmet_support) ? "T" : "I", ret);
+
+out_fail:
+ kfree(axchg);
+
+ /* recycle receive buffer */
+ lpfc_in_buf_free(phba, &nvmebuf->dbuf);
+
+ /* If start of new exchange, abort it */
+ if (fctl & FC_FC_FIRST_SEQ && !(fctl & FC_FC_EX_CTX))
+ lpfc_nvme_unsol_ls_issue_abort(phba, axchg, sid, oxid);
+}
+
/**
* lpfc_complete_unsol_iocb - Complete an unsolicited sequence
* @phba: Pointer to HBA context object.
switch (fch_type) {
case FC_TYPE_NVME:
- lpfc_nvmet_unsol_ls_event(phba, pring, saveq);
+ lpfc_nvme_unsol_ls_handler(phba, saveq);
return 1;
default:
break;
/* Just some basic sanity checks on FCP Command frame */
fctl = (fc_hdr->fh_f_ctl[0] << 16 |
- fc_hdr->fh_f_ctl[1] << 8 |
- fc_hdr->fh_f_ctl[2]);
+ fc_hdr->fh_f_ctl[1] << 8 |
+ fc_hdr->fh_f_ctl[2]);
if (((fctl &
(FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)) !=
(FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)) ||
projects / linux.git / commitdiff