ceph/src/spdk/lib/bdev/nvme/common.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/env.h"
  35 #include "common.h"
  36
  37 struct nvme_bdev_ctrlrs g_nvme_bdev_ctrlrs = TAILQ_HEAD_INITIALIZER(g_nvme_bdev_ctrlrs);
  38 pthread_mutex_t g_bdev_nvme_mutex = PTHREAD_MUTEX_INITIALIZER;
  39
  40 struct nvme_bdev_ctrlr *
  41 nvme_bdev_ctrlr_get(const struct spdk_nvme_transport_id *trid)
  42 {
  43         struct nvme_bdev_ctrlr  *nvme_bdev_ctrlr;
  44
  45         TAILQ_FOREACH(nvme_bdev_ctrlr, &g_nvme_bdev_ctrlrs, tailq) {
  46                 if (spdk_nvme_transport_id_compare(trid, &nvme_bdev_ctrlr->trid) == 0) {
  47                         return nvme_bdev_ctrlr;
  48                 }
  49         }
  50
  51         return NULL;
  52 }
  53
  54 struct nvme_bdev_ctrlr *
  55 nvme_bdev_ctrlr_get_by_name(const char *name)
  56 {
  57         struct nvme_bdev_ctrlr *nvme_bdev_ctrlr;
  58
  59         if (name == NULL) {
  60                 return NULL;
  61         }
  62
  63         TAILQ_FOREACH(nvme_bdev_ctrlr, &g_nvme_bdev_ctrlrs, tailq) {
  64                 if (strcmp(name, nvme_bdev_ctrlr->name) == 0) {
  65                         return nvme_bdev_ctrlr;
  66                 }
  67         }
  68
  69         return NULL;
  70 }
  71
  72 struct nvme_bdev_ctrlr *
  73 nvme_bdev_first_ctrlr(void)
  74 {
  75         return TAILQ_FIRST(&g_nvme_bdev_ctrlrs);
  76 }
  77
  78 struct nvme_bdev_ctrlr *
  79 nvme_bdev_next_ctrlr(struct nvme_bdev_ctrlr *prev)
  80 {
  81         return TAILQ_NEXT(prev, tailq);
  82 }
  83
  84 void
  85 nvme_bdev_dump_trid_json(struct spdk_nvme_transport_id *trid, struct spdk_json_write_ctx *w)
  86 {
  87         const char *trtype_str;
  88         const char *adrfam_str;
  89
  90         trtype_str = spdk_nvme_transport_id_trtype_str(trid->trtype);
  91         if (trtype_str) {
  92                 spdk_json_write_named_string(w, "trtype", trtype_str);
  93         }
  94
  95         adrfam_str = spdk_nvme_transport_id_adrfam_str(trid->adrfam);
  96         if (adrfam_str) {
  97                 spdk_json_write_named_string(w, "adrfam", adrfam_str);
  98         }
  99
 100         if (trid->traddr[0] != '\0') {
 101                 spdk_json_write_named_string(w, "traddr", trid->traddr);
 102         }
 103
 104         if (trid->trsvcid[0] != '\0') {
 105                 spdk_json_write_named_string(w, "trsvcid", trid->trsvcid);
 106         }
 107
 108         if (trid->subnqn[0] != '\0') {
 109                 spdk_json_write_named_string(w, "subnqn", trid->subnqn);
 110         }
 111 }