ceph/src/spdk/test/env/env_dpdk_post_init/env_dpdk_post_init.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (c) Intel Corporation.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include "spdk/stdinc.h"
  35
  36 #include "spdk/nvme.h"
  37 #include "spdk/env.h"
  38 #include "spdk/env_dpdk.h"
  39 #include <rte_config.h>
  40 #include <rte_eal.h>
  41
  42 #define MAX_DEVS 64
  43
  44 struct dev {
  45         struct spdk_nvme_ctrlr                          *ctrlr;
  46         struct spdk_nvme_ns                             *ns;
  47         struct spdk_nvme_qpair                          *qpair;
  48         char                                            name[SPDK_NVMF_TRADDR_MAX_LEN + 1];
  49 };
  50
  51 static struct dev g_nvme_devs[MAX_DEVS];
  52 static int g_num_devs = 0;
  53 static int g_failed = 0;
  54
  55 static bool
  56 probe_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid,
  57          struct spdk_nvme_ctrlr_opts *opts)
  58 {
  59         printf("Attaching to %s\n", trid->traddr);
  60
  61         return true;
  62 }
  63
  64 static void
  65 attach_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid,
  66           struct spdk_nvme_ctrlr *ctrlr, const struct spdk_nvme_ctrlr_opts *opts)
  67 {
  68         struct dev *dev;
  69         uint32_t nsid;
  70
  71         /* add to dev list */
  72         dev = &g_nvme_devs[g_num_devs++];
  73         if (g_num_devs >= MAX_DEVS) {
  74                 return;
  75         }
  76
  77         dev->ctrlr = ctrlr;
  78         nsid = spdk_nvme_ctrlr_get_first_active_ns(ctrlr);
  79         dev->ns = spdk_nvme_ctrlr_get_ns(ctrlr, nsid);
  80
  81         dev->qpair = spdk_nvme_ctrlr_alloc_io_qpair(ctrlr, NULL, 0);
  82         if (dev->qpair == NULL) {
  83                 g_failed = 1;
  84                 return;
  85         }
  86
  87         snprintf(dev->name, sizeof(dev->name), "%s",
  88                  trid->traddr);
  89
  90         printf("Attached to %s\n", dev->name);
  91 }
  92
  93 int
  94 main(int argc, char **argv)
  95 {
  96         int ret;
  97         int i;
  98
  99         printf("Starting DPDK initialization...\n");
 100         ret = rte_eal_init(argc, argv);
 101         if (ret < 0) {
 102                 fprintf(stderr, "Failed to initialize DPDK\n");
 103                 return -1;
 104         }
 105
 106         printf("Starting SPDK post initialization...\n");
 107         ret = spdk_env_dpdk_post_init(false);
 108         if (ret < 0) {
 109                 fprintf(stderr, "Failed to initialize SPDK\n");
 110                 return -1;
 111         }
 112
 113         printf("SPDK NVMe probe\n");
 114         if (spdk_nvme_probe(NULL, NULL, probe_cb, attach_cb, NULL) != 0) {
 115                 fprintf(stderr, "spdk_nvme_probe() failed\n");
 116                 return 1;
 117         }
 118
 119         printf("Cleaning up...\n");
 120         for (i = 0; i < g_num_devs; i++) {
 121                 struct dev *dev = &g_nvme_devs[i];
 122                 spdk_nvme_detach(dev->ctrlr);
 123         }
 124
 125         return g_failed;
 126 }