aedbb3b81a
strncpy is going to be added to the list of banned functions because it does not guarantee strings are null terminated. Change-Id: Ic18623c281cca7c3d87732bc7677b284d57685c8 Signed-off-by: Ben Walker <benjamin.walker@intel.com> Reviewed-on: https://review.gerrithub.io/407023 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
1637 lines
41 KiB
C
1637 lines
41 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* NVMe over RDMA transport
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*/
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#include "spdk/stdinc.h"
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#include <infiniband/verbs.h>
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#include <rdma/rdma_cma.h>
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#include <rdma/rdma_verbs.h>
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#include "spdk/assert.h"
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#include "spdk/log.h"
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#include "spdk/trace.h"
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#include "spdk/event.h"
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#include "spdk/queue.h"
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#include "spdk/nvme.h"
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#include "spdk/nvmf_spec.h"
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#include "spdk/string.h"
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#include "spdk/endian.h"
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#include "nvme_internal.h"
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#define NVME_RDMA_TIME_OUT_IN_MS 2000
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#define NVME_RDMA_RW_BUFFER_SIZE 131072
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/*
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NVME RDMA qpair Resouce Defaults
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*/
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#define NVME_RDMA_DEFAULT_TX_SGE 2
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#define NVME_RDMA_DEFAULT_RX_SGE 1
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/* Mapping from virtual address to ibv_mr pointer for a protection domain */
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struct spdk_nvme_rdma_mr_map {
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struct ibv_pd *pd;
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struct spdk_mem_map *map;
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uint64_t ref;
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LIST_ENTRY(spdk_nvme_rdma_mr_map) link;
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};
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/* NVMe RDMA transport extensions for spdk_nvme_ctrlr */
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struct nvme_rdma_ctrlr {
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struct spdk_nvme_ctrlr ctrlr;
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uint16_t cntlid;
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};
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/* NVMe RDMA qpair extensions for spdk_nvme_qpair */
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struct nvme_rdma_qpair {
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struct spdk_nvme_qpair qpair;
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struct rdma_event_channel *cm_channel;
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struct rdma_cm_id *cm_id;
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struct ibv_cq *cq;
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struct spdk_nvme_rdma_req *rdma_reqs;
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uint16_t num_entries;
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/* Parallel arrays of response buffers + response SGLs of size num_entries */
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struct ibv_sge *rsp_sgls;
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struct spdk_nvme_cpl *rsps;
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struct ibv_recv_wr *rsp_recv_wrs;
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/* Memory region describing all rsps for this qpair */
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struct ibv_mr *rsp_mr;
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/*
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* Array of num_entries NVMe commands registered as RDMA message buffers.
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* Indexed by rdma_req->id.
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*/
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struct spdk_nvme_cmd *cmds;
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/* Memory region describing all cmds for this qpair */
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struct ibv_mr *cmd_mr;
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struct spdk_nvme_rdma_mr_map *mr_map;
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STAILQ_HEAD(, spdk_nvme_rdma_req) free_reqs;
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};
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struct spdk_nvme_rdma_req {
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int id;
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struct ibv_send_wr send_wr;
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struct nvme_request *req;
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struct ibv_sge send_sgl;
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STAILQ_ENTRY(spdk_nvme_rdma_req) link;
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};
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static const char *rdma_cm_event_str[] = {
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"RDMA_CM_EVENT_ADDR_RESOLVED",
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"RDMA_CM_EVENT_ADDR_ERROR",
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"RDMA_CM_EVENT_ROUTE_RESOLVED",
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"RDMA_CM_EVENT_ROUTE_ERROR",
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"RDMA_CM_EVENT_CONNECT_REQUEST",
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"RDMA_CM_EVENT_CONNECT_RESPONSE",
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"RDMA_CM_EVENT_CONNECT_ERROR",
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"RDMA_CM_EVENT_UNREACHABLE",
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"RDMA_CM_EVENT_REJECTED",
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"RDMA_CM_EVENT_ESTABLISHED",
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"RDMA_CM_EVENT_DISCONNECTED",
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"RDMA_CM_EVENT_DEVICE_REMOVAL",
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"RDMA_CM_EVENT_MULTICAST_JOIN",
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"RDMA_CM_EVENT_MULTICAST_ERROR",
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"RDMA_CM_EVENT_ADDR_CHANGE",
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"RDMA_CM_EVENT_TIMEWAIT_EXIT"
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};
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static LIST_HEAD(, spdk_nvme_rdma_mr_map) g_rdma_mr_maps = LIST_HEAD_INITIALIZER(&g_rdma_mr_maps);
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static pthread_mutex_t g_rdma_mr_maps_mutex = PTHREAD_MUTEX_INITIALIZER;
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static int nvme_rdma_qpair_destroy(struct spdk_nvme_qpair *qpair);
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static inline struct nvme_rdma_qpair *
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nvme_rdma_qpair(struct spdk_nvme_qpair *qpair)
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{
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assert(qpair->trtype == SPDK_NVME_TRANSPORT_RDMA);
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return (struct nvme_rdma_qpair *)((uintptr_t)qpair - offsetof(struct nvme_rdma_qpair, qpair));
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}
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static inline struct nvme_rdma_ctrlr *
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nvme_rdma_ctrlr(struct spdk_nvme_ctrlr *ctrlr)
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{
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assert(ctrlr->trid.trtype == SPDK_NVME_TRANSPORT_RDMA);
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return (struct nvme_rdma_ctrlr *)((uintptr_t)ctrlr - offsetof(struct nvme_rdma_ctrlr, ctrlr));
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}
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static struct spdk_nvme_rdma_req *
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nvme_rdma_req_get(struct nvme_rdma_qpair *rqpair)
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{
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struct spdk_nvme_rdma_req *rdma_req;
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rdma_req = STAILQ_FIRST(&rqpair->free_reqs);
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if (rdma_req) {
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STAILQ_REMOVE_HEAD(&rqpair->free_reqs, link);
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}
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return rdma_req;
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}
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static void
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nvme_rdma_req_put(struct nvme_rdma_qpair *rqpair, struct spdk_nvme_rdma_req *rdma_req)
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{
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STAILQ_INSERT_HEAD(&rqpair->free_reqs, rdma_req, link);
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}
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static void
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nvme_rdma_req_complete(struct nvme_request *req,
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struct spdk_nvme_cpl *rsp)
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{
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req->cb_fn(req->cb_arg, rsp);
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nvme_free_request(req);
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}
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static const char *
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nvme_rdma_cm_event_str_get(uint32_t event)
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{
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if (event < SPDK_COUNTOF(rdma_cm_event_str)) {
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return rdma_cm_event_str[event];
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} else {
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return "Undefined";
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}
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}
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static struct rdma_cm_event *
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nvme_rdma_get_event(struct rdma_event_channel *channel,
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enum rdma_cm_event_type evt)
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{
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struct rdma_cm_event *event;
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int rc;
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rc = rdma_get_cm_event(channel, &event);
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if (rc < 0) {
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SPDK_ERRLOG("Failed to get event from CM event channel. Error %d (%s)\n",
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errno, spdk_strerror(errno));
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return NULL;
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}
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if (event->event != evt) {
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SPDK_ERRLOG("Expected %s but received %s (%d) from CM event channel (status = %d)\n",
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nvme_rdma_cm_event_str_get(evt),
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nvme_rdma_cm_event_str_get(event->event), event->event, event->status);
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rdma_ack_cm_event(event);
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return NULL;
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}
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return event;
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}
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static int
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nvme_rdma_qpair_init(struct nvme_rdma_qpair *rqpair)
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{
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int rc;
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struct ibv_qp_init_attr attr;
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rqpair->cq = ibv_create_cq(rqpair->cm_id->verbs, rqpair->num_entries * 2, rqpair, NULL, 0);
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if (!rqpair->cq) {
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SPDK_ERRLOG("Unable to create completion queue: errno %d: %s\n", errno, spdk_strerror(errno));
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return -1;
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}
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memset(&attr, 0, sizeof(struct ibv_qp_init_attr));
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attr.qp_type = IBV_QPT_RC;
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attr.send_cq = rqpair->cq;
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attr.recv_cq = rqpair->cq;
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attr.cap.max_send_wr = rqpair->num_entries; /* SEND operations */
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attr.cap.max_recv_wr = rqpair->num_entries; /* RECV operations */
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attr.cap.max_send_sge = NVME_RDMA_DEFAULT_TX_SGE;
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attr.cap.max_recv_sge = NVME_RDMA_DEFAULT_RX_SGE;
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rc = rdma_create_qp(rqpair->cm_id, NULL, &attr);
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if (rc) {
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SPDK_ERRLOG("rdma_create_qp failed\n");
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return -1;
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}
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rqpair->cm_id->context = &rqpair->qpair;
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return 0;
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}
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#define nvme_rdma_trace_ibv_sge(sg_list) \
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if (sg_list) { \
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SPDK_DEBUGLOG(SPDK_LOG_NVME, "local addr %p length 0x%x lkey 0x%x\n", \
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(void *)(sg_list)->addr, (sg_list)->length, (sg_list)->lkey); \
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}
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static int
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nvme_rdma_post_recv(struct nvme_rdma_qpair *rqpair, uint16_t rsp_idx)
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{
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struct ibv_recv_wr *wr, *bad_wr = NULL;
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int rc;
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wr = &rqpair->rsp_recv_wrs[rsp_idx];
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nvme_rdma_trace_ibv_sge(wr->sg_list);
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rc = ibv_post_recv(rqpair->cm_id->qp, wr, &bad_wr);
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if (rc) {
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SPDK_ERRLOG("Failure posting rdma recv, rc = 0x%x\n", rc);
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}
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return rc;
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}
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static void
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nvme_rdma_free_rsps(struct nvme_rdma_qpair *rqpair)
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{
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if (rqpair->rsp_mr && rdma_dereg_mr(rqpair->rsp_mr)) {
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SPDK_ERRLOG("Unable to de-register rsp_mr\n");
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}
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rqpair->rsp_mr = NULL;
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free(rqpair->rsps);
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rqpair->rsps = NULL;
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free(rqpair->rsp_sgls);
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rqpair->rsp_sgls = NULL;
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free(rqpair->rsp_recv_wrs);
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rqpair->rsp_recv_wrs = NULL;
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}
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static int
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nvme_rdma_alloc_rsps(struct nvme_rdma_qpair *rqpair)
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{
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uint16_t i;
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rqpair->rsp_mr = NULL;
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rqpair->rsps = NULL;
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rqpair->rsp_recv_wrs = NULL;
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rqpair->rsp_sgls = calloc(rqpair->num_entries, sizeof(*rqpair->rsp_sgls));
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if (!rqpair->rsp_sgls) {
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SPDK_ERRLOG("Failed to allocate rsp_sgls\n");
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goto fail;
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}
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rqpair->rsp_recv_wrs = calloc(rqpair->num_entries,
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sizeof(*rqpair->rsp_recv_wrs));
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if (!rqpair->rsp_recv_wrs) {
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SPDK_ERRLOG("Failed to allocate rsp_recv_wrs\n");
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goto fail;
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}
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rqpair->rsps = calloc(rqpair->num_entries, sizeof(*rqpair->rsps));
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if (!rqpair->rsps) {
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SPDK_ERRLOG("can not allocate rdma rsps\n");
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goto fail;
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}
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rqpair->rsp_mr = rdma_reg_msgs(rqpair->cm_id, rqpair->rsps,
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rqpair->num_entries * sizeof(*rqpair->rsps));
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if (rqpair->rsp_mr == NULL) {
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SPDK_ERRLOG("Unable to register rsp_mr\n");
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goto fail;
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}
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for (i = 0; i < rqpair->num_entries; i++) {
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struct ibv_sge *rsp_sgl = &rqpair->rsp_sgls[i];
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rsp_sgl->addr = (uint64_t)&rqpair->rsps[i];
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rsp_sgl->length = sizeof(rqpair->rsps[i]);
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rsp_sgl->lkey = rqpair->rsp_mr->lkey;
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rqpair->rsp_recv_wrs[i].wr_id = i;
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rqpair->rsp_recv_wrs[i].next = NULL;
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rqpair->rsp_recv_wrs[i].sg_list = rsp_sgl;
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rqpair->rsp_recv_wrs[i].num_sge = 1;
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|
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if (nvme_rdma_post_recv(rqpair, i)) {
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SPDK_ERRLOG("Unable to post connection rx desc\n");
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goto fail;
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}
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}
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return 0;
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|
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fail:
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nvme_rdma_free_rsps(rqpair);
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return -ENOMEM;
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}
|
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|
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static void
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nvme_rdma_free_reqs(struct nvme_rdma_qpair *rqpair)
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{
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if (!rqpair->rdma_reqs) {
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return;
|
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}
|
|
|
|
if (rqpair->cmd_mr && rdma_dereg_mr(rqpair->cmd_mr)) {
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SPDK_ERRLOG("Unable to de-register cmd_mr\n");
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}
|
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rqpair->cmd_mr = NULL;
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|
|
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free(rqpair->cmds);
|
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rqpair->cmds = NULL;
|
|
|
|
free(rqpair->rdma_reqs);
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rqpair->rdma_reqs = NULL;
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}
|
|
|
|
static int
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nvme_rdma_alloc_reqs(struct nvme_rdma_qpair *rqpair)
|
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{
|
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int i;
|
|
|
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rqpair->rdma_reqs = calloc(rqpair->num_entries, sizeof(struct spdk_nvme_rdma_req));
|
|
if (rqpair->rdma_reqs == NULL) {
|
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SPDK_ERRLOG("Failed to allocate rdma_reqs\n");
|
|
goto fail;
|
|
}
|
|
|
|
rqpair->cmds = calloc(rqpair->num_entries, sizeof(*rqpair->cmds));
|
|
if (!rqpair->cmds) {
|
|
SPDK_ERRLOG("Failed to allocate RDMA cmds\n");
|
|
goto fail;
|
|
}
|
|
|
|
rqpair->cmd_mr = rdma_reg_msgs(rqpair->cm_id, rqpair->cmds,
|
|
rqpair->num_entries * sizeof(*rqpair->cmds));
|
|
if (!rqpair->cmd_mr) {
|
|
SPDK_ERRLOG("Unable to register cmd_mr\n");
|
|
goto fail;
|
|
}
|
|
|
|
STAILQ_INIT(&rqpair->free_reqs);
|
|
for (i = 0; i < rqpair->num_entries; i++) {
|
|
struct spdk_nvme_rdma_req *rdma_req;
|
|
struct spdk_nvme_cmd *cmd;
|
|
|
|
rdma_req = &rqpair->rdma_reqs[i];
|
|
cmd = &rqpair->cmds[i];
|
|
|
|
rdma_req->id = i;
|
|
|
|
rdma_req->send_sgl.addr = (uint64_t)cmd;
|
|
rdma_req->send_sgl.length = sizeof(*cmd);
|
|
rdma_req->send_sgl.lkey = rqpair->cmd_mr->lkey;
|
|
|
|
rdma_req->send_wr.wr_id = (uint64_t)rdma_req;
|
|
rdma_req->send_wr.next = NULL;
|
|
rdma_req->send_wr.opcode = IBV_WR_SEND;
|
|
rdma_req->send_wr.send_flags = IBV_SEND_SIGNALED;
|
|
rdma_req->send_wr.sg_list = &rdma_req->send_sgl;
|
|
rdma_req->send_wr.num_sge = 1;
|
|
rdma_req->send_wr.imm_data = 0;
|
|
|
|
STAILQ_INSERT_TAIL(&rqpair->free_reqs, rdma_req, link);
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
nvme_rdma_free_reqs(rqpair);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static int
|
|
nvme_rdma_recv(struct nvme_rdma_qpair *rqpair, uint64_t rsp_idx)
|
|
{
|
|
struct spdk_nvme_qpair *qpair = &rqpair->qpair;
|
|
struct spdk_nvme_rdma_req *rdma_req;
|
|
struct spdk_nvme_cpl *rsp;
|
|
struct nvme_request *req;
|
|
|
|
assert(rsp_idx < rqpair->num_entries);
|
|
rsp = &rqpair->rsps[rsp_idx];
|
|
rdma_req = &rqpair->rdma_reqs[rsp->cid];
|
|
|
|
req = rdma_req->req;
|
|
nvme_rdma_req_complete(req, rsp);
|
|
|
|
nvme_rdma_req_put(rqpair, rdma_req);
|
|
if (nvme_rdma_post_recv(rqpair, rsp_idx)) {
|
|
SPDK_ERRLOG("Unable to re-post rx descriptor\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!STAILQ_EMPTY(&qpair->queued_req) && !qpair->ctrlr->is_resetting) {
|
|
req = STAILQ_FIRST(&qpair->queued_req);
|
|
STAILQ_REMOVE_HEAD(&qpair->queued_req, stailq);
|
|
nvme_qpair_submit_request(qpair, req);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
nvme_rdma_resolve_addr(struct nvme_rdma_qpair *rqpair,
|
|
struct sockaddr *src_addr,
|
|
struct sockaddr *dst_addr,
|
|
struct rdma_event_channel *cm_channel)
|
|
{
|
|
int ret;
|
|
struct rdma_cm_event *event;
|
|
|
|
ret = rdma_resolve_addr(rqpair->cm_id, src_addr, dst_addr,
|
|
NVME_RDMA_TIME_OUT_IN_MS);
|
|
if (ret) {
|
|
SPDK_ERRLOG("rdma_resolve_addr, %d\n", errno);
|
|
return ret;
|
|
}
|
|
|
|
event = nvme_rdma_get_event(cm_channel, RDMA_CM_EVENT_ADDR_RESOLVED);
|
|
if (event == NULL) {
|
|
SPDK_ERRLOG("RDMA address resolution error\n");
|
|
return -1;
|
|
}
|
|
rdma_ack_cm_event(event);
|
|
|
|
ret = rdma_resolve_route(rqpair->cm_id, NVME_RDMA_TIME_OUT_IN_MS);
|
|
if (ret) {
|
|
SPDK_ERRLOG("rdma_resolve_route\n");
|
|
return ret;
|
|
}
|
|
|
|
event = nvme_rdma_get_event(cm_channel, RDMA_CM_EVENT_ROUTE_RESOLVED);
|
|
if (event == NULL) {
|
|
SPDK_ERRLOG("RDMA route resolution error\n");
|
|
return -1;
|
|
}
|
|
rdma_ack_cm_event(event);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
nvme_rdma_connect(struct nvme_rdma_qpair *rqpair)
|
|
{
|
|
struct rdma_conn_param param = {};
|
|
struct spdk_nvmf_rdma_request_private_data request_data = {};
|
|
struct spdk_nvmf_rdma_accept_private_data *accept_data;
|
|
struct ibv_device_attr attr;
|
|
int ret;
|
|
struct rdma_cm_event *event;
|
|
struct spdk_nvme_ctrlr *ctrlr;
|
|
struct nvme_rdma_ctrlr *rctrlr;
|
|
|
|
ret = ibv_query_device(rqpair->cm_id->verbs, &attr);
|
|
if (ret != 0) {
|
|
SPDK_ERRLOG("Failed to query RDMA device attributes.\n");
|
|
return ret;
|
|
}
|
|
|
|
param.responder_resources = spdk_min(rqpair->num_entries, attr.max_qp_rd_atom);
|
|
|
|
ctrlr = rqpair->qpair.ctrlr;
|
|
if (!ctrlr) {
|
|
return -1;
|
|
}
|
|
|
|
rctrlr = nvme_rdma_ctrlr(ctrlr);
|
|
|
|
request_data.qid = rqpair->qpair.id;
|
|
request_data.hrqsize = rqpair->num_entries;
|
|
request_data.hsqsize = rqpair->num_entries - 1;
|
|
request_data.cntlid = rctrlr->cntlid;
|
|
|
|
param.private_data = &request_data;
|
|
param.private_data_len = sizeof(request_data);
|
|
param.retry_count = 7;
|
|
|
|
ret = rdma_connect(rqpair->cm_id, ¶m);
|
|
if (ret) {
|
|
SPDK_ERRLOG("nvme rdma connect error\n");
|
|
return ret;
|
|
}
|
|
|
|
event = nvme_rdma_get_event(rqpair->cm_channel, RDMA_CM_EVENT_ESTABLISHED);
|
|
if (event == NULL) {
|
|
SPDK_ERRLOG("RDMA connect error\n");
|
|
return -1;
|
|
}
|
|
|
|
accept_data = (struct spdk_nvmf_rdma_accept_private_data *)event->param.conn.private_data;
|
|
if (accept_data == NULL) {
|
|
rdma_ack_cm_event(event);
|
|
SPDK_ERRLOG("NVMe-oF target did not return accept data\n");
|
|
return -1;
|
|
}
|
|
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "Requested queue depth %d. Actually got queue depth %d.\n",
|
|
rqpair->num_entries, accept_data->crqsize);
|
|
|
|
rqpair->num_entries = spdk_min(rqpair->num_entries, accept_data->crqsize);
|
|
|
|
rdma_ack_cm_event(event);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
nvme_rdma_parse_addr(struct sockaddr_storage *sa, int family, const char *addr, const char *service)
|
|
{
|
|
struct addrinfo *res;
|
|
struct addrinfo hints;
|
|
int ret;
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = family;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_protocol = 0;
|
|
|
|
ret = getaddrinfo(addr, service, &hints, &res);
|
|
if (ret) {
|
|
SPDK_ERRLOG("getaddrinfo failed: %s (%d)\n", gai_strerror(ret), ret);
|
|
return ret;
|
|
}
|
|
|
|
if (res->ai_addrlen > sizeof(*sa)) {
|
|
SPDK_ERRLOG("getaddrinfo() ai_addrlen %zu too large\n", (size_t)res->ai_addrlen);
|
|
ret = EINVAL;
|
|
} else {
|
|
memcpy(sa, res->ai_addr, res->ai_addrlen);
|
|
}
|
|
|
|
freeaddrinfo(res);
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
nvme_rdma_qpair_fabric_connect(struct nvme_rdma_qpair *rqpair)
|
|
{
|
|
struct nvme_completion_poll_status status;
|
|
struct spdk_nvmf_fabric_connect_rsp *rsp;
|
|
struct spdk_nvmf_fabric_connect_cmd cmd;
|
|
struct spdk_nvmf_fabric_connect_data *nvmf_data;
|
|
struct spdk_nvme_ctrlr *ctrlr;
|
|
struct nvme_rdma_ctrlr *rctrlr;
|
|
int rc = 0;
|
|
|
|
ctrlr = rqpair->qpair.ctrlr;
|
|
if (!ctrlr) {
|
|
return -1;
|
|
}
|
|
|
|
rctrlr = nvme_rdma_ctrlr(ctrlr);
|
|
|
|
nvmf_data = spdk_dma_zmalloc(sizeof(*nvmf_data), 0, NULL);
|
|
if (!nvmf_data) {
|
|
SPDK_ERRLOG("nvmf_data allocation error\n");
|
|
rc = -1;
|
|
return rc;
|
|
}
|
|
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
memset(&status, 0, sizeof(struct nvme_completion_poll_status));
|
|
|
|
cmd.opcode = SPDK_NVME_OPC_FABRIC;
|
|
cmd.fctype = SPDK_NVMF_FABRIC_COMMAND_CONNECT;
|
|
cmd.qid = rqpair->qpair.id;
|
|
cmd.sqsize = rqpair->num_entries - 1;
|
|
cmd.kato = ctrlr->opts.keep_alive_timeout_ms;
|
|
|
|
if (nvme_qpair_is_admin_queue(&rqpair->qpair)) {
|
|
nvmf_data->cntlid = 0xFFFF;
|
|
} else {
|
|
nvmf_data->cntlid = rctrlr->cntlid;
|
|
}
|
|
|
|
SPDK_STATIC_ASSERT(sizeof(nvmf_data->hostid) == sizeof(ctrlr->opts.extended_host_id),
|
|
"host ID size mismatch");
|
|
memcpy(nvmf_data->hostid, ctrlr->opts.extended_host_id, sizeof(nvmf_data->hostid));
|
|
snprintf(nvmf_data->hostnqn, sizeof(nvmf_data->hostnqn), "%s", ctrlr->opts.hostnqn);
|
|
snprintf(nvmf_data->subnqn, sizeof(nvmf_data->subnqn), "%s", ctrlr->trid.subnqn);
|
|
|
|
rc = spdk_nvme_ctrlr_cmd_io_raw(ctrlr, &rqpair->qpair,
|
|
(struct spdk_nvme_cmd *)&cmd,
|
|
nvmf_data, sizeof(*nvmf_data),
|
|
nvme_completion_poll_cb, &status);
|
|
if (rc < 0) {
|
|
SPDK_ERRLOG("spdk_nvme_rdma_req_fabric_connect failed\n");
|
|
rc = -1;
|
|
goto ret;
|
|
}
|
|
|
|
while (status.done == false) {
|
|
spdk_nvme_qpair_process_completions(&rqpair->qpair, 0);
|
|
}
|
|
|
|
if (spdk_nvme_cpl_is_error(&status.cpl)) {
|
|
SPDK_ERRLOG("Connect command failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if (nvme_qpair_is_admin_queue(&rqpair->qpair)) {
|
|
rsp = (struct spdk_nvmf_fabric_connect_rsp *)&status.cpl;
|
|
rctrlr->cntlid = rsp->status_code_specific.success.cntlid;
|
|
}
|
|
ret:
|
|
spdk_dma_free(nvmf_data);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
nvme_rdma_mr_map_notify(void *cb_ctx, struct spdk_mem_map *map,
|
|
enum spdk_mem_map_notify_action action,
|
|
void *vaddr, size_t size)
|
|
{
|
|
struct ibv_pd *pd = cb_ctx;
|
|
struct ibv_mr *mr;
|
|
int rc;
|
|
|
|
switch (action) {
|
|
case SPDK_MEM_MAP_NOTIFY_REGISTER:
|
|
mr = ibv_reg_mr(pd, vaddr, size,
|
|
IBV_ACCESS_LOCAL_WRITE |
|
|
IBV_ACCESS_REMOTE_READ |
|
|
IBV_ACCESS_REMOTE_WRITE);
|
|
if (mr == NULL) {
|
|
SPDK_ERRLOG("ibv_reg_mr() failed\n");
|
|
return -EFAULT;
|
|
} else {
|
|
rc = spdk_mem_map_set_translation(map, (uint64_t)vaddr, size, (uint64_t)mr);
|
|
}
|
|
break;
|
|
case SPDK_MEM_MAP_NOTIFY_UNREGISTER:
|
|
mr = (struct ibv_mr *)spdk_mem_map_translate(map, (uint64_t)vaddr);
|
|
rc = spdk_mem_map_clear_translation(map, (uint64_t)vaddr, size);
|
|
if (mr) {
|
|
ibv_dereg_mr(mr);
|
|
}
|
|
break;
|
|
default:
|
|
SPDK_UNREACHABLE();
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
static int
|
|
nvme_rdma_register_mem(struct nvme_rdma_qpair *rqpair)
|
|
{
|
|
struct ibv_pd *pd = rqpair->cm_id->qp->pd;
|
|
struct spdk_nvme_rdma_mr_map *mr_map;
|
|
|
|
pthread_mutex_lock(&g_rdma_mr_maps_mutex);
|
|
|
|
/* Look up existing mem map registration for this pd */
|
|
LIST_FOREACH(mr_map, &g_rdma_mr_maps, link) {
|
|
if (mr_map->pd == pd) {
|
|
mr_map->ref++;
|
|
rqpair->mr_map = mr_map;
|
|
pthread_mutex_unlock(&g_rdma_mr_maps_mutex);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
mr_map = calloc(1, sizeof(*mr_map));
|
|
if (mr_map == NULL) {
|
|
SPDK_ERRLOG("calloc() failed\n");
|
|
pthread_mutex_unlock(&g_rdma_mr_maps_mutex);
|
|
return -1;
|
|
}
|
|
|
|
mr_map->ref = 1;
|
|
mr_map->pd = pd;
|
|
mr_map->map = spdk_mem_map_alloc((uint64_t)NULL, nvme_rdma_mr_map_notify, pd);
|
|
if (mr_map == NULL) {
|
|
SPDK_ERRLOG("spdk_mem_map_alloc() failed\n");
|
|
free(mr_map);
|
|
pthread_mutex_unlock(&g_rdma_mr_maps_mutex);
|
|
return -1;
|
|
}
|
|
|
|
rqpair->mr_map = mr_map;
|
|
LIST_INSERT_HEAD(&g_rdma_mr_maps, mr_map, link);
|
|
|
|
pthread_mutex_unlock(&g_rdma_mr_maps_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
nvme_rdma_unregister_mem(struct nvme_rdma_qpair *rqpair)
|
|
{
|
|
struct spdk_nvme_rdma_mr_map *mr_map;
|
|
|
|
mr_map = rqpair->mr_map;
|
|
rqpair->mr_map = NULL;
|
|
|
|
if (mr_map == NULL) {
|
|
return;
|
|
}
|
|
|
|
pthread_mutex_lock(&g_rdma_mr_maps_mutex);
|
|
|
|
assert(mr_map->ref > 0);
|
|
mr_map->ref--;
|
|
if (mr_map->ref == 0) {
|
|
LIST_REMOVE(mr_map, link);
|
|
spdk_mem_map_free(&mr_map->map);
|
|
free(mr_map);
|
|
}
|
|
|
|
pthread_mutex_unlock(&g_rdma_mr_maps_mutex);
|
|
}
|
|
|
|
static int
|
|
nvme_rdma_qpair_connect(struct nvme_rdma_qpair *rqpair)
|
|
{
|
|
struct sockaddr_storage dst_addr;
|
|
struct sockaddr_storage src_addr;
|
|
bool src_addr_specified;
|
|
int rc;
|
|
struct spdk_nvme_ctrlr *ctrlr;
|
|
int family;
|
|
|
|
rqpair->cm_channel = rdma_create_event_channel();
|
|
if (rqpair->cm_channel == NULL) {
|
|
SPDK_ERRLOG("rdma_create_event_channel() failed\n");
|
|
return -1;
|
|
}
|
|
|
|
ctrlr = rqpair->qpair.ctrlr;
|
|
|
|
switch (ctrlr->trid.adrfam) {
|
|
case SPDK_NVMF_ADRFAM_IPV4:
|
|
family = AF_INET;
|
|
break;
|
|
case SPDK_NVMF_ADRFAM_IPV6:
|
|
family = AF_INET6;
|
|
break;
|
|
default:
|
|
SPDK_ERRLOG("Unhandled ADRFAM %d\n", ctrlr->trid.adrfam);
|
|
return -1;
|
|
}
|
|
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "adrfam %d ai_family %d\n", ctrlr->trid.adrfam, family);
|
|
|
|
memset(&dst_addr, 0, sizeof(dst_addr));
|
|
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "trsvcid is %s\n", ctrlr->trid.trsvcid);
|
|
rc = nvme_rdma_parse_addr(&dst_addr, family, ctrlr->trid.traddr, ctrlr->trid.trsvcid);
|
|
if (rc != 0) {
|
|
SPDK_ERRLOG("dst_addr nvme_rdma_parse_addr() failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if (ctrlr->opts.src_addr[0] || ctrlr->opts.src_svcid[0]) {
|
|
memset(&src_addr, 0, sizeof(src_addr));
|
|
rc = nvme_rdma_parse_addr(&src_addr, family, ctrlr->opts.src_addr, ctrlr->opts.src_svcid);
|
|
if (rc != 0) {
|
|
SPDK_ERRLOG("src_addr nvme_rdma_parse_addr() failed\n");
|
|
return -1;
|
|
}
|
|
src_addr_specified = true;
|
|
} else {
|
|
src_addr_specified = false;
|
|
}
|
|
|
|
rc = rdma_create_id(rqpair->cm_channel, &rqpair->cm_id, rqpair, RDMA_PS_TCP);
|
|
if (rc < 0) {
|
|
SPDK_ERRLOG("rdma_create_id() failed\n");
|
|
return -1;
|
|
}
|
|
|
|
rc = nvme_rdma_resolve_addr(rqpair,
|
|
src_addr_specified ? (struct sockaddr *)&src_addr : NULL,
|
|
(struct sockaddr *)&dst_addr, rqpair->cm_channel);
|
|
if (rc < 0) {
|
|
SPDK_ERRLOG("nvme_rdma_resolve_addr() failed\n");
|
|
return -1;
|
|
}
|
|
|
|
rc = nvme_rdma_qpair_init(rqpair);
|
|
if (rc < 0) {
|
|
SPDK_ERRLOG("nvme_rdma_qpair_init() failed\n");
|
|
return -1;
|
|
}
|
|
|
|
rc = nvme_rdma_connect(rqpair);
|
|
if (rc != 0) {
|
|
SPDK_ERRLOG("Unable to connect the rqpair\n");
|
|
return -1;
|
|
}
|
|
|
|
rc = nvme_rdma_alloc_reqs(rqpair);
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "rc =%d\n", rc);
|
|
if (rc) {
|
|
SPDK_ERRLOG("Unable to allocate rqpair RDMA requests\n");
|
|
return -1;
|
|
}
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "RDMA requests allocated\n");
|
|
|
|
rc = nvme_rdma_alloc_rsps(rqpair);
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "rc =%d\n", rc);
|
|
if (rc < 0) {
|
|
SPDK_ERRLOG("Unable to allocate rqpair RDMA responses\n");
|
|
return -1;
|
|
}
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "RDMA responses allocated\n");
|
|
|
|
rc = nvme_rdma_register_mem(rqpair);
|
|
if (rc < 0) {
|
|
SPDK_ERRLOG("Unable to register memory for RDMA\n");
|
|
return -1;
|
|
}
|
|
|
|
rc = nvme_rdma_qpair_fabric_connect(rqpair);
|
|
if (rc < 0) {
|
|
SPDK_ERRLOG("Failed to send an NVMe-oF Fabric CONNECT command\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Build SGL describing empty payload.
|
|
*/
|
|
static int
|
|
nvme_rdma_build_null_request(struct nvme_request *req)
|
|
{
|
|
struct spdk_nvme_sgl_descriptor *nvme_sgl;
|
|
|
|
req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_CONTIG;
|
|
|
|
nvme_sgl = &req->cmd.dptr.sgl1;
|
|
nvme_sgl->keyed.type = SPDK_NVME_SGL_TYPE_KEYED_DATA_BLOCK;
|
|
nvme_sgl->keyed.subtype = SPDK_NVME_SGL_SUBTYPE_ADDRESS;
|
|
nvme_sgl->keyed.length = 0;
|
|
nvme_sgl->keyed.key = 0;
|
|
nvme_sgl->address = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Build SGL describing contiguous payload buffer.
|
|
*/
|
|
static int
|
|
nvme_rdma_build_contig_request(struct nvme_rdma_qpair *rqpair, struct nvme_request *req)
|
|
{
|
|
void *payload = req->payload.u.contig + req->payload_offset;
|
|
struct ibv_mr *mr;
|
|
|
|
assert(req->payload_size != 0);
|
|
assert(req->payload.type == NVME_PAYLOAD_TYPE_CONTIG);
|
|
|
|
mr = (struct ibv_mr *)spdk_mem_map_translate(rqpair->mr_map->map, (uint64_t)payload);
|
|
if (mr == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_CONTIG;
|
|
req->cmd.dptr.sgl1.keyed.type = SPDK_NVME_SGL_TYPE_KEYED_DATA_BLOCK;
|
|
req->cmd.dptr.sgl1.keyed.subtype = SPDK_NVME_SGL_SUBTYPE_ADDRESS;
|
|
req->cmd.dptr.sgl1.keyed.length = req->payload_size;
|
|
req->cmd.dptr.sgl1.keyed.key = mr->rkey;
|
|
req->cmd.dptr.sgl1.address = (uint64_t)payload;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Build SGL describing scattered payload buffer.
|
|
*/
|
|
static int
|
|
nvme_rdma_build_sgl_request(struct nvme_rdma_qpair *rqpair, struct nvme_request *req)
|
|
{
|
|
int rc;
|
|
void *virt_addr;
|
|
struct ibv_mr *mr;
|
|
uint32_t length;
|
|
|
|
assert(req->payload_size != 0);
|
|
assert(req->payload.type == NVME_PAYLOAD_TYPE_SGL);
|
|
assert(req->payload.u.sgl.reset_sgl_fn != NULL);
|
|
assert(req->payload.u.sgl.next_sge_fn != NULL);
|
|
req->payload.u.sgl.reset_sgl_fn(req->payload.u.sgl.cb_arg, req->payload_offset);
|
|
|
|
/* TODO: for now, we only support a single SGL entry */
|
|
rc = req->payload.u.sgl.next_sge_fn(req->payload.u.sgl.cb_arg, &virt_addr, &length);
|
|
if (rc) {
|
|
return -1;
|
|
}
|
|
|
|
if (length < req->payload_size) {
|
|
SPDK_ERRLOG("multi-element SGL currently not supported for RDMA\n");
|
|
return -1;
|
|
}
|
|
|
|
mr = (struct ibv_mr *)spdk_mem_map_translate(rqpair->mr_map->map, (uint64_t)virt_addr);
|
|
if (mr == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_CONTIG;
|
|
req->cmd.dptr.sgl1.keyed.type = SPDK_NVME_SGL_TYPE_KEYED_DATA_BLOCK;
|
|
req->cmd.dptr.sgl1.keyed.subtype = SPDK_NVME_SGL_SUBTYPE_ADDRESS;
|
|
req->cmd.dptr.sgl1.keyed.length = req->payload_size;
|
|
req->cmd.dptr.sgl1.keyed.key = mr->rkey;
|
|
req->cmd.dptr.sgl1.address = (uint64_t)virt_addr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
nvme_rdma_req_init(struct nvme_rdma_qpair *rqpair, struct nvme_request *req,
|
|
struct spdk_nvme_rdma_req *rdma_req)
|
|
{
|
|
int rc;
|
|
|
|
rdma_req->req = req;
|
|
req->cmd.cid = rdma_req->id;
|
|
|
|
if (req->payload_size == 0) {
|
|
rc = nvme_rdma_build_null_request(req);
|
|
} else if (req->payload.type == NVME_PAYLOAD_TYPE_CONTIG) {
|
|
rc = nvme_rdma_build_contig_request(rqpair, req);
|
|
} else if (req->payload.type == NVME_PAYLOAD_TYPE_SGL) {
|
|
rc = nvme_rdma_build_sgl_request(rqpair, req);
|
|
} else {
|
|
rc = -1;
|
|
}
|
|
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
memcpy(&rqpair->cmds[rdma_req->id], &req->cmd, sizeof(req->cmd));
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
nvme_rdma_fabric_prop_set_cmd(struct spdk_nvme_ctrlr *ctrlr,
|
|
uint32_t offset, uint8_t size, uint64_t value)
|
|
{
|
|
struct spdk_nvmf_fabric_prop_set_cmd cmd = {};
|
|
struct nvme_completion_poll_status status = {};
|
|
int rc;
|
|
|
|
cmd.opcode = SPDK_NVME_OPC_FABRIC;
|
|
cmd.fctype = SPDK_NVMF_FABRIC_COMMAND_PROPERTY_SET;
|
|
cmd.ofst = offset;
|
|
cmd.attrib.size = size;
|
|
cmd.value.u64 = value;
|
|
|
|
rc = spdk_nvme_ctrlr_cmd_admin_raw(ctrlr, (struct spdk_nvme_cmd *)&cmd,
|
|
NULL, 0,
|
|
nvme_completion_poll_cb, &status);
|
|
|
|
if (rc < 0) {
|
|
SPDK_ERRLOG("failed to send nvmf_fabric_prop_set_cmd\n");
|
|
return -1;
|
|
}
|
|
|
|
while (status.done == false) {
|
|
spdk_nvme_qpair_process_completions(ctrlr->adminq, 0);
|
|
}
|
|
|
|
if (spdk_nvme_cpl_is_error(&status.cpl)) {
|
|
SPDK_ERRLOG("nvme_rdma_fabric_prop_get_cmd failed\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
nvme_rdma_fabric_prop_get_cmd(struct spdk_nvme_ctrlr *ctrlr,
|
|
uint32_t offset, uint8_t size, uint64_t *value)
|
|
{
|
|
struct spdk_nvmf_fabric_prop_set_cmd cmd = {};
|
|
struct nvme_completion_poll_status status = {};
|
|
struct spdk_nvmf_fabric_prop_get_rsp *response;
|
|
int rc;
|
|
|
|
cmd.opcode = SPDK_NVME_OPC_FABRIC;
|
|
cmd.fctype = SPDK_NVMF_FABRIC_COMMAND_PROPERTY_GET;
|
|
cmd.ofst = offset;
|
|
cmd.attrib.size = size;
|
|
|
|
rc = spdk_nvme_ctrlr_cmd_admin_raw(ctrlr, (struct spdk_nvme_cmd *)&cmd,
|
|
NULL, 0, nvme_completion_poll_cb,
|
|
&status);
|
|
|
|
if (rc < 0) {
|
|
SPDK_ERRLOG("failed to send nvme_rdma_fabric_prop_get_cmd\n");
|
|
return -1;
|
|
}
|
|
|
|
while (status.done == false) {
|
|
spdk_nvme_qpair_process_completions(ctrlr->adminq, 0);
|
|
}
|
|
|
|
if (spdk_nvme_cpl_is_error(&status.cpl)) {
|
|
SPDK_ERRLOG("nvme_rdma_fabric_prop_get_cmd failed\n");
|
|
return -1;
|
|
}
|
|
|
|
response = (struct spdk_nvmf_fabric_prop_get_rsp *)&status.cpl;
|
|
|
|
if (!size) {
|
|
*value = response->value.u32.low;
|
|
} else {
|
|
*value = response->value.u64;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct spdk_nvme_qpair *
|
|
nvme_rdma_ctrlr_create_qpair(struct spdk_nvme_ctrlr *ctrlr,
|
|
uint16_t qid, uint32_t qsize,
|
|
enum spdk_nvme_qprio qprio,
|
|
uint32_t num_requests)
|
|
{
|
|
struct nvme_rdma_qpair *rqpair;
|
|
struct spdk_nvme_qpair *qpair;
|
|
int rc;
|
|
|
|
rqpair = calloc(1, sizeof(struct nvme_rdma_qpair));
|
|
if (!rqpair) {
|
|
SPDK_ERRLOG("failed to get create rqpair\n");
|
|
return NULL;
|
|
}
|
|
|
|
rqpair->num_entries = qsize;
|
|
|
|
qpair = &rqpair->qpair;
|
|
|
|
rc = nvme_qpair_init(qpair, qid, ctrlr, qprio, num_requests);
|
|
if (rc != 0) {
|
|
return NULL;
|
|
}
|
|
|
|
rc = nvme_rdma_qpair_connect(rqpair);
|
|
if (rc < 0) {
|
|
nvme_rdma_qpair_destroy(qpair);
|
|
return NULL;
|
|
}
|
|
|
|
return qpair;
|
|
}
|
|
|
|
static int
|
|
nvme_rdma_qpair_destroy(struct spdk_nvme_qpair *qpair)
|
|
{
|
|
struct nvme_rdma_qpair *rqpair;
|
|
|
|
if (!qpair) {
|
|
return -1;
|
|
}
|
|
|
|
rqpair = nvme_rdma_qpair(qpair);
|
|
|
|
nvme_rdma_unregister_mem(rqpair);
|
|
nvme_rdma_free_reqs(rqpair);
|
|
nvme_rdma_free_rsps(rqpair);
|
|
|
|
if (rqpair->cm_id) {
|
|
if (rqpair->cm_id->qp) {
|
|
rdma_destroy_qp(rqpair->cm_id);
|
|
}
|
|
rdma_destroy_id(rqpair->cm_id);
|
|
}
|
|
|
|
if (rqpair->cq) {
|
|
ibv_destroy_cq(rqpair->cq);
|
|
}
|
|
|
|
if (rqpair->cm_channel) {
|
|
rdma_destroy_event_channel(rqpair->cm_channel);
|
|
}
|
|
|
|
free(rqpair);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct spdk_nvme_qpair *
|
|
nvme_rdma_ctrlr_create_io_qpair(struct spdk_nvme_ctrlr *ctrlr, uint16_t qid,
|
|
const struct spdk_nvme_io_qpair_opts *opts)
|
|
{
|
|
return nvme_rdma_ctrlr_create_qpair(ctrlr, qid, opts->io_queue_size, opts->qprio,
|
|
opts->io_queue_requests);
|
|
}
|
|
|
|
int
|
|
nvme_rdma_ctrlr_enable(struct spdk_nvme_ctrlr *ctrlr)
|
|
{
|
|
/* do nothing here */
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
nvme_fabrics_get_log_discovery_page(struct spdk_nvme_ctrlr *ctrlr,
|
|
void *log_page, uint32_t size, uint64_t offset)
|
|
{
|
|
struct nvme_completion_poll_status status;
|
|
int rc;
|
|
|
|
status.done = false;
|
|
rc = spdk_nvme_ctrlr_cmd_get_log_page(ctrlr, SPDK_NVME_LOG_DISCOVERY, 0, log_page, size, offset,
|
|
nvme_completion_poll_cb, &status);
|
|
if (rc < 0) {
|
|
return -1;
|
|
}
|
|
|
|
while (status.done == false) {
|
|
spdk_nvme_qpair_process_completions(ctrlr->adminq, 0);
|
|
}
|
|
|
|
if (spdk_nvme_cpl_is_error(&status.cpl)) {
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
nvme_rdma_discovery_probe(struct spdk_nvmf_discovery_log_page_entry *entry,
|
|
void *cb_ctx, spdk_nvme_probe_cb probe_cb)
|
|
{
|
|
struct spdk_nvme_transport_id trid;
|
|
uint8_t *end;
|
|
size_t len;
|
|
|
|
memset(&trid, 0, sizeof(trid));
|
|
|
|
if (entry->subtype == SPDK_NVMF_SUBTYPE_DISCOVERY) {
|
|
SPDK_WARNLOG("Skipping unsupported discovery service referral\n");
|
|
return;
|
|
} else if (entry->subtype != SPDK_NVMF_SUBTYPE_NVME) {
|
|
SPDK_WARNLOG("Skipping unknown subtype %u\n", entry->subtype);
|
|
return;
|
|
}
|
|
|
|
trid.trtype = entry->trtype;
|
|
if (!spdk_nvme_transport_available(trid.trtype)) {
|
|
SPDK_WARNLOG("NVMe transport type %u not available; skipping probe\n",
|
|
trid.trtype);
|
|
return;
|
|
}
|
|
|
|
trid.adrfam = entry->adrfam;
|
|
|
|
/* Ensure that subnqn is null terminated. */
|
|
end = memchr(entry->subnqn, '\0', SPDK_NVMF_NQN_MAX_LEN + 1);
|
|
if (!end) {
|
|
SPDK_ERRLOG("Discovery entry SUBNQN is not null terminated\n");
|
|
return;
|
|
}
|
|
len = end - entry->subnqn;
|
|
memcpy(trid.subnqn, entry->subnqn, len);
|
|
trid.subnqn[len] = '\0';
|
|
|
|
/* Convert traddr to a null terminated string. */
|
|
len = spdk_strlen_pad(entry->traddr, sizeof(entry->traddr), ' ');
|
|
memcpy(trid.traddr, entry->traddr, len);
|
|
if (spdk_str_chomp(trid.traddr) != 0) {
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "Trailing newlines removed from discovery TRADDR\n");
|
|
}
|
|
|
|
/* Convert trsvcid to a null terminated string. */
|
|
len = spdk_strlen_pad(entry->trsvcid, sizeof(entry->trsvcid), ' ');
|
|
memcpy(trid.trsvcid, entry->trsvcid, len);
|
|
if (spdk_str_chomp(trid.trsvcid) != 0) {
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "Trailing newlines removed from discovery TRSVCID\n");
|
|
}
|
|
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "subnqn=%s, trtype=%u, traddr=%s, trsvcid=%s\n",
|
|
trid.subnqn, trid.trtype,
|
|
trid.traddr, trid.trsvcid);
|
|
|
|
nvme_ctrlr_probe(&trid, NULL, probe_cb, cb_ctx);
|
|
}
|
|
|
|
/* This function must only be called while holding g_spdk_nvme_driver->lock */
|
|
int
|
|
nvme_rdma_ctrlr_scan(const struct spdk_nvme_transport_id *discovery_trid,
|
|
void *cb_ctx,
|
|
spdk_nvme_probe_cb probe_cb,
|
|
spdk_nvme_remove_cb remove_cb,
|
|
bool direct_connect)
|
|
{
|
|
struct spdk_nvme_ctrlr_opts discovery_opts;
|
|
struct spdk_nvme_ctrlr *discovery_ctrlr;
|
|
struct spdk_nvmf_discovery_log_page *log_page;
|
|
struct spdk_nvmf_discovery_log_page_entry *log_page_entry;
|
|
union spdk_nvme_cc_register cc;
|
|
char buffer[4096];
|
|
int rc;
|
|
uint64_t i, numrec, buffer_max_entries_first, buffer_max_entries, log_page_offset = 0;
|
|
uint64_t remaining_num_rec = 0;
|
|
uint16_t recfmt;
|
|
struct nvme_completion_poll_status status;
|
|
|
|
if (strcmp(discovery_trid->subnqn, SPDK_NVMF_DISCOVERY_NQN) != 0) {
|
|
/* It is not a discovery_ctrlr info and try to directly connect it */
|
|
rc = nvme_ctrlr_probe(discovery_trid, NULL, probe_cb, cb_ctx);
|
|
return rc;
|
|
}
|
|
|
|
spdk_nvme_ctrlr_get_default_ctrlr_opts(&discovery_opts, sizeof(discovery_opts));
|
|
/* For discovery_ctrlr set the timeout to 0 */
|
|
discovery_opts.keep_alive_timeout_ms = 0;
|
|
|
|
memset(buffer, 0x0, 4096);
|
|
discovery_ctrlr = nvme_rdma_ctrlr_construct(discovery_trid, &discovery_opts, NULL);
|
|
if (discovery_ctrlr == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
/* TODO: this should be using the normal NVMe controller initialization process */
|
|
cc.raw = 0;
|
|
cc.bits.en = 1;
|
|
cc.bits.iosqes = 6; /* SQ entry size == 64 == 2^6 */
|
|
cc.bits.iocqes = 4; /* CQ entry size == 16 == 2^4 */
|
|
rc = nvme_transport_ctrlr_set_reg_4(discovery_ctrlr, offsetof(struct spdk_nvme_registers, cc.raw),
|
|
cc.raw);
|
|
if (rc < 0) {
|
|
SPDK_ERRLOG("Failed to set cc\n");
|
|
nvme_ctrlr_destruct(discovery_ctrlr);
|
|
return -1;
|
|
}
|
|
|
|
/* get the cdata info */
|
|
status.done = false;
|
|
rc = nvme_ctrlr_cmd_identify(discovery_ctrlr, SPDK_NVME_IDENTIFY_CTRLR, 0, 0,
|
|
&discovery_ctrlr->cdata, sizeof(discovery_ctrlr->cdata),
|
|
nvme_completion_poll_cb, &status);
|
|
if (rc != 0) {
|
|
SPDK_ERRLOG("Failed to identify cdata\n");
|
|
return rc;
|
|
}
|
|
|
|
while (status.done == false) {
|
|
spdk_nvme_qpair_process_completions(discovery_ctrlr->adminq, 0);
|
|
}
|
|
if (spdk_nvme_cpl_is_error(&status.cpl)) {
|
|
SPDK_ERRLOG("nvme_identify_controller failed!\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
/* Direct attach through spdk_nvme_connect() API */
|
|
if (direct_connect == true) {
|
|
/* Set the ready state to skip the normal init process */
|
|
discovery_ctrlr->state = NVME_CTRLR_STATE_READY;
|
|
nvme_ctrlr_connected(discovery_ctrlr);
|
|
nvme_ctrlr_add_process(discovery_ctrlr, 0);
|
|
return 0;
|
|
}
|
|
|
|
buffer_max_entries_first = (sizeof(buffer) - offsetof(struct spdk_nvmf_discovery_log_page,
|
|
entries[0])) /
|
|
sizeof(struct spdk_nvmf_discovery_log_page_entry);
|
|
buffer_max_entries = sizeof(buffer) / sizeof(struct spdk_nvmf_discovery_log_page_entry);
|
|
do {
|
|
rc = nvme_fabrics_get_log_discovery_page(discovery_ctrlr, buffer, sizeof(buffer), log_page_offset);
|
|
if (rc < 0) {
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "nvme_fabrics_get_log_discovery_page error\n");
|
|
nvme_ctrlr_destruct(discovery_ctrlr);
|
|
return rc;
|
|
}
|
|
|
|
if (!remaining_num_rec) {
|
|
log_page = (struct spdk_nvmf_discovery_log_page *)buffer;
|
|
recfmt = from_le16(&log_page->recfmt);
|
|
if (recfmt != 0) {
|
|
SPDK_ERRLOG("Unrecognized discovery log record format %" PRIu16 "\n", recfmt);
|
|
nvme_ctrlr_destruct(discovery_ctrlr);
|
|
return -EPROTO;
|
|
}
|
|
remaining_num_rec = log_page->numrec;
|
|
log_page_offset = offsetof(struct spdk_nvmf_discovery_log_page, entries[0]);
|
|
log_page_entry = &log_page->entries[0];
|
|
numrec = spdk_min(remaining_num_rec, buffer_max_entries_first);
|
|
} else {
|
|
numrec = spdk_min(remaining_num_rec, buffer_max_entries);
|
|
log_page_entry = (struct spdk_nvmf_discovery_log_page_entry *)buffer;
|
|
}
|
|
|
|
|
|
for (i = 0; i < numrec; i++) {
|
|
nvme_rdma_discovery_probe(log_page_entry++, cb_ctx, probe_cb);
|
|
}
|
|
remaining_num_rec -= numrec;
|
|
log_page_offset += numrec * sizeof(struct spdk_nvmf_discovery_log_page_entry);
|
|
} while (remaining_num_rec != 0);
|
|
|
|
nvme_ctrlr_destruct(discovery_ctrlr);
|
|
return 0;
|
|
}
|
|
|
|
struct spdk_nvme_ctrlr *nvme_rdma_ctrlr_construct(const struct spdk_nvme_transport_id *trid,
|
|
const struct spdk_nvme_ctrlr_opts *opts,
|
|
void *devhandle)
|
|
{
|
|
struct nvme_rdma_ctrlr *rctrlr;
|
|
union spdk_nvme_cap_register cap;
|
|
int rc;
|
|
|
|
rctrlr = calloc(1, sizeof(struct nvme_rdma_ctrlr));
|
|
if (rctrlr == NULL) {
|
|
SPDK_ERRLOG("could not allocate ctrlr\n");
|
|
return NULL;
|
|
}
|
|
|
|
rctrlr->ctrlr.trid.trtype = SPDK_NVME_TRANSPORT_RDMA;
|
|
rctrlr->ctrlr.opts = *opts;
|
|
memcpy(&rctrlr->ctrlr.trid, trid, sizeof(rctrlr->ctrlr.trid));
|
|
|
|
rc = nvme_ctrlr_construct(&rctrlr->ctrlr);
|
|
if (rc != 0) {
|
|
nvme_ctrlr_destruct(&rctrlr->ctrlr);
|
|
return NULL;
|
|
}
|
|
|
|
rctrlr->ctrlr.adminq = nvme_rdma_ctrlr_create_qpair(&rctrlr->ctrlr, 0,
|
|
SPDK_NVMF_MIN_ADMIN_QUEUE_ENTRIES, 0, SPDK_NVMF_MIN_ADMIN_QUEUE_ENTRIES);
|
|
if (!rctrlr->ctrlr.adminq) {
|
|
SPDK_ERRLOG("failed to create admin qpair\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (nvme_ctrlr_get_cap(&rctrlr->ctrlr, &cap)) {
|
|
SPDK_ERRLOG("get_cap() failed\n");
|
|
nvme_ctrlr_destruct(&rctrlr->ctrlr);
|
|
return NULL;
|
|
}
|
|
|
|
nvme_ctrlr_init_cap(&rctrlr->ctrlr, &cap);
|
|
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "succesully initialized the nvmf ctrlr\n");
|
|
return &rctrlr->ctrlr;
|
|
}
|
|
|
|
int
|
|
nvme_rdma_ctrlr_destruct(struct spdk_nvme_ctrlr *ctrlr)
|
|
{
|
|
struct nvme_rdma_ctrlr *rctrlr = nvme_rdma_ctrlr(ctrlr);
|
|
|
|
if (ctrlr->adminq) {
|
|
nvme_rdma_qpair_destroy(ctrlr->adminq);
|
|
}
|
|
|
|
nvme_ctrlr_destruct_finish(ctrlr);
|
|
|
|
free(rctrlr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
nvme_rdma_ctrlr_set_reg_4(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint32_t value)
|
|
{
|
|
return nvme_rdma_fabric_prop_set_cmd(ctrlr, offset, SPDK_NVMF_PROP_SIZE_4, value);
|
|
}
|
|
|
|
int
|
|
nvme_rdma_ctrlr_set_reg_8(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint64_t value)
|
|
{
|
|
return nvme_rdma_fabric_prop_set_cmd(ctrlr, offset, SPDK_NVMF_PROP_SIZE_8, value);
|
|
}
|
|
|
|
int
|
|
nvme_rdma_ctrlr_get_reg_4(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint32_t *value)
|
|
{
|
|
uint64_t tmp_value;
|
|
int rc;
|
|
rc = nvme_rdma_fabric_prop_get_cmd(ctrlr, offset, SPDK_NVMF_PROP_SIZE_4, &tmp_value);
|
|
|
|
if (!rc) {
|
|
*value = (uint32_t)tmp_value;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
nvme_rdma_ctrlr_get_reg_8(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint64_t *value)
|
|
{
|
|
return nvme_rdma_fabric_prop_get_cmd(ctrlr, offset, SPDK_NVMF_PROP_SIZE_8, value);
|
|
}
|
|
|
|
int
|
|
nvme_rdma_qpair_submit_request(struct spdk_nvme_qpair *qpair,
|
|
struct nvme_request *req)
|
|
{
|
|
struct nvme_rdma_qpair *rqpair;
|
|
struct spdk_nvme_rdma_req *rdma_req;
|
|
struct ibv_send_wr *wr, *bad_wr = NULL;
|
|
int rc;
|
|
|
|
rqpair = nvme_rdma_qpair(qpair);
|
|
assert(rqpair != NULL);
|
|
assert(req != NULL);
|
|
|
|
rdma_req = nvme_rdma_req_get(rqpair);
|
|
if (!rdma_req) {
|
|
/*
|
|
* No rdma_req is available. Queue the request to be processed later.
|
|
*/
|
|
STAILQ_INSERT_TAIL(&qpair->queued_req, req, stailq);
|
|
return 0;
|
|
}
|
|
|
|
if (nvme_rdma_req_init(rqpair, req, rdma_req)) {
|
|
SPDK_ERRLOG("nvme_rdma_req_init() failed\n");
|
|
nvme_rdma_req_put(rqpair, rdma_req);
|
|
return -1;
|
|
}
|
|
|
|
wr = &rdma_req->send_wr;
|
|
|
|
nvme_rdma_trace_ibv_sge(wr->sg_list);
|
|
|
|
rc = ibv_post_send(rqpair->cm_id->qp, wr, &bad_wr);
|
|
if (rc) {
|
|
SPDK_ERRLOG("Failure posting rdma send for NVMf completion: %d (%s)\n", rc, spdk_strerror(rc));
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
nvme_rdma_ctrlr_delete_io_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
|
|
{
|
|
return nvme_rdma_qpair_destroy(qpair);
|
|
}
|
|
|
|
int
|
|
nvme_rdma_ctrlr_reinit_io_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
|
|
{
|
|
return nvme_rdma_qpair_connect(nvme_rdma_qpair(qpair));
|
|
}
|
|
|
|
int
|
|
nvme_rdma_qpair_enable(struct spdk_nvme_qpair *qpair)
|
|
{
|
|
/* Currently, doing nothing here */
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
nvme_rdma_qpair_disable(struct spdk_nvme_qpair *qpair)
|
|
{
|
|
/* Currently, doing nothing here */
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
nvme_rdma_qpair_reset(struct spdk_nvme_qpair *qpair)
|
|
{
|
|
/* Currently, doing nothing here */
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
nvme_rdma_qpair_fail(struct spdk_nvme_qpair *qpair)
|
|
{
|
|
/* Currently, doing nothing here */
|
|
return 0;
|
|
}
|
|
|
|
#define MAX_COMPLETIONS_PER_POLL 128
|
|
|
|
int
|
|
nvme_rdma_qpair_process_completions(struct spdk_nvme_qpair *qpair,
|
|
uint32_t max_completions)
|
|
{
|
|
struct nvme_rdma_qpair *rqpair = nvme_rdma_qpair(qpair);
|
|
struct ibv_wc wc[MAX_COMPLETIONS_PER_POLL];
|
|
int i, rc, batch_size;
|
|
uint32_t reaped;
|
|
struct ibv_cq *cq;
|
|
|
|
if (max_completions == 0) {
|
|
max_completions = rqpair->num_entries;
|
|
} else {
|
|
max_completions = spdk_min(max_completions, rqpair->num_entries);
|
|
}
|
|
|
|
cq = rqpair->cq;
|
|
|
|
reaped = 0;
|
|
do {
|
|
batch_size = spdk_min((max_completions - reaped),
|
|
MAX_COMPLETIONS_PER_POLL);
|
|
rc = ibv_poll_cq(cq, batch_size, wc);
|
|
if (rc < 0) {
|
|
SPDK_ERRLOG("Error polling CQ! (%d): %s\n",
|
|
errno, spdk_strerror(errno));
|
|
return -1;
|
|
} else if (rc == 0) {
|
|
/* Ran out of completions */
|
|
break;
|
|
}
|
|
|
|
for (i = 0; i < rc; i++) {
|
|
if (wc[i].status) {
|
|
SPDK_ERRLOG("CQ error on Queue Pair %p, Response Index %lu (%d): %s\n",
|
|
qpair, wc[i].wr_id, wc[i].status, ibv_wc_status_str(wc[i].status));
|
|
return -1;
|
|
}
|
|
|
|
switch (wc[i].opcode) {
|
|
case IBV_WC_RECV:
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVME, "CQ recv completion\n");
|
|
|
|
reaped++;
|
|
|
|
if (wc[i].byte_len < sizeof(struct spdk_nvme_cpl)) {
|
|
SPDK_ERRLOG("recv length %u less than expected response size\n", wc[i].byte_len);
|
|
return -1;
|
|
}
|
|
|
|
if (nvme_rdma_recv(rqpair, wc[i].wr_id)) {
|
|
SPDK_ERRLOG("nvme_rdma_recv processing failure\n");
|
|
return -1;
|
|
}
|
|
break;
|
|
|
|
case IBV_WC_SEND:
|
|
break;
|
|
|
|
default:
|
|
SPDK_ERRLOG("Received an unexpected opcode on the CQ: %d\n", wc[i].opcode);
|
|
return -1;
|
|
}
|
|
}
|
|
} while (reaped < max_completions);
|
|
|
|
return reaped;
|
|
}
|
|
|
|
uint32_t
|
|
nvme_rdma_ctrlr_get_max_xfer_size(struct spdk_nvme_ctrlr *ctrlr)
|
|
{
|
|
/* Todo, which should get from the NVMF target */
|
|
return NVME_RDMA_RW_BUFFER_SIZE;
|
|
}
|
|
|
|
uint16_t
|
|
nvme_rdma_ctrlr_get_max_sges(struct spdk_nvme_ctrlr *ctrlr)
|
|
{
|
|
/*
|
|
* We do not support >1 SGE in the initiator currently,
|
|
* so we can only return 1 here. Once that support is
|
|
* added, this should return ctrlr->cdata.nvmf_specific.msdbd
|
|
* instead.
|
|
*/
|
|
return 1;
|
|
}
|
|
|
|
void *
|
|
nvme_rdma_ctrlr_alloc_cmb_io_buffer(struct spdk_nvme_ctrlr *ctrlr, size_t size)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
nvme_rdma_ctrlr_free_cmb_io_buffer(struct spdk_nvme_ctrlr *ctrlr, void *buf, size_t size)
|
|
{
|
|
return 0;
|
|
}
|