LCOV - code coverage report
Current view: top level - module/bdev/nvme - bdev_nvme_rpc.c (source / functions) Hit Total Coverage
Test: ut_cov_unit.info Lines: 0 1283 0.0 %
Date: 2024-07-12 12:31:27 Functions: 0 109 0.0 %

          Line data    Source code
       1             : /*   SPDX-License-Identifier: BSD-3-Clause
       2             :  *   Copyright (C) 2016 Intel Corporation. All rights reserved.
       3             :  *   Copyright (c) 2019-2021 Mellanox Technologies LTD. All rights reserved.
       4             :  *   Copyright (c) 2022-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
       5             :  *   Copyright (c) 2022 Dell Inc, or its subsidiaries. All rights reserved.
       6             :  */
       7             : 
       8             : #include "spdk/stdinc.h"
       9             : 
      10             : #include "bdev_nvme.h"
      11             : 
      12             : #include "spdk/config.h"
      13             : 
      14             : #include "spdk/string.h"
      15             : #include "spdk/rpc.h"
      16             : #include "spdk/util.h"
      17             : #include "spdk/env.h"
      18             : #include "spdk/nvme.h"
      19             : #include "spdk/nvme_spec.h"
      20             : 
      21             : #include "spdk/log.h"
      22             : #include "spdk/bdev_module.h"
      23             : 
      24             : static bool g_tls_log = false;
      25             : 
      26             : static int
      27           0 : rpc_decode_action_on_timeout(const struct spdk_json_val *val, void *out)
      28             : {
      29           0 :         enum spdk_bdev_timeout_action *action = out;
      30             : 
      31           0 :         if (spdk_json_strequal(val, "none") == true) {
      32           0 :                 *action = SPDK_BDEV_NVME_TIMEOUT_ACTION_NONE;
      33           0 :         } else if (spdk_json_strequal(val, "abort") == true) {
      34           0 :                 *action = SPDK_BDEV_NVME_TIMEOUT_ACTION_ABORT;
      35           0 :         } else if (spdk_json_strequal(val, "reset") == true) {
      36           0 :                 *action = SPDK_BDEV_NVME_TIMEOUT_ACTION_RESET;
      37             :         } else {
      38           0 :                 SPDK_NOTICELOG("Invalid parameter value: action_on_timeout\n");
      39           0 :                 return -EINVAL;
      40             :         }
      41             : 
      42           0 :         return 0;
      43             : }
      44             : 
      45             : static int
      46           0 : rpc_decode_digest(const struct spdk_json_val *val, void *out)
      47             : {
      48           0 :         uint32_t *flags = out;
      49           0 :         char *digest = NULL;
      50             :         int rc;
      51             : 
      52           0 :         rc = spdk_json_decode_string(val, &digest);
      53           0 :         if (rc != 0) {
      54           0 :                 return rc;
      55             :         }
      56             : 
      57           0 :         rc = spdk_nvme_dhchap_get_digest_id(digest);
      58           0 :         if (rc >= 0) {
      59           0 :                 *flags |= SPDK_BIT(rc);
      60           0 :                 rc = 0;
      61             :         }
      62           0 :         free(digest);
      63             : 
      64           0 :         return rc;
      65             : }
      66             : 
      67             : static int
      68           0 : rpc_decode_digest_array(const struct spdk_json_val *val, void *out)
      69             : {
      70           0 :         uint32_t *flags = out;
      71           0 :         size_t count;
      72             : 
      73           0 :         *flags = 0;
      74             : 
      75           0 :         return spdk_json_decode_array(val, rpc_decode_digest, out, 32, &count, 0);
      76             : }
      77             : 
      78             : static int
      79           0 : rpc_decode_dhgroup(const struct spdk_json_val *val, void *out)
      80             : {
      81           0 :         uint32_t *flags = out;
      82           0 :         char *dhgroup = NULL;
      83             :         int rc;
      84             : 
      85           0 :         rc = spdk_json_decode_string(val, &dhgroup);
      86           0 :         if (rc != 0) {
      87           0 :                 return rc;
      88             :         }
      89             : 
      90           0 :         rc = spdk_nvme_dhchap_get_dhgroup_id(dhgroup);
      91           0 :         if (rc >= 0) {
      92           0 :                 *flags |= SPDK_BIT(rc);
      93           0 :                 rc = 0;
      94             :         }
      95           0 :         free(dhgroup);
      96             : 
      97           0 :         return rc;
      98             : }
      99             : 
     100             : static int
     101           0 : rpc_decode_dhgroup_array(const struct spdk_json_val *val, void *out)
     102             : {
     103           0 :         uint32_t *flags = out;
     104           0 :         size_t count;
     105             : 
     106           0 :         *flags = 0;
     107             : 
     108           0 :         return spdk_json_decode_array(val, rpc_decode_dhgroup, out, 32, &count, 0);
     109             : }
     110             : 
     111             : static const struct spdk_json_object_decoder rpc_bdev_nvme_options_decoders[] = {
     112             :         {"action_on_timeout", offsetof(struct spdk_bdev_nvme_opts, action_on_timeout), rpc_decode_action_on_timeout, true},
     113             :         {"timeout_us", offsetof(struct spdk_bdev_nvme_opts, timeout_us), spdk_json_decode_uint64, true},
     114             :         {"timeout_admin_us", offsetof(struct spdk_bdev_nvme_opts, timeout_admin_us), spdk_json_decode_uint64, true},
     115             :         {"keep_alive_timeout_ms", offsetof(struct spdk_bdev_nvme_opts, keep_alive_timeout_ms), spdk_json_decode_uint32, true},
     116             :         {"arbitration_burst", offsetof(struct spdk_bdev_nvme_opts, arbitration_burst), spdk_json_decode_uint32, true},
     117             :         {"low_priority_weight", offsetof(struct spdk_bdev_nvme_opts, low_priority_weight), spdk_json_decode_uint32, true},
     118             :         {"medium_priority_weight", offsetof(struct spdk_bdev_nvme_opts, medium_priority_weight), spdk_json_decode_uint32, true},
     119             :         {"high_priority_weight", offsetof(struct spdk_bdev_nvme_opts, high_priority_weight), spdk_json_decode_uint32, true},
     120             :         {"nvme_adminq_poll_period_us", offsetof(struct spdk_bdev_nvme_opts, nvme_adminq_poll_period_us), spdk_json_decode_uint64, true},
     121             :         {"nvme_ioq_poll_period_us", offsetof(struct spdk_bdev_nvme_opts, nvme_ioq_poll_period_us), spdk_json_decode_uint64, true},
     122             :         {"io_queue_requests", offsetof(struct spdk_bdev_nvme_opts, io_queue_requests), spdk_json_decode_uint32, true},
     123             :         {"delay_cmd_submit", offsetof(struct spdk_bdev_nvme_opts, delay_cmd_submit), spdk_json_decode_bool, true},
     124             :         {"transport_retry_count", offsetof(struct spdk_bdev_nvme_opts, transport_retry_count), spdk_json_decode_uint32, true},
     125             :         {"bdev_retry_count", offsetof(struct spdk_bdev_nvme_opts, bdev_retry_count), spdk_json_decode_int32, true},
     126             :         {"transport_ack_timeout", offsetof(struct spdk_bdev_nvme_opts, transport_ack_timeout), spdk_json_decode_uint8, true},
     127             :         {"ctrlr_loss_timeout_sec", offsetof(struct spdk_bdev_nvme_opts, ctrlr_loss_timeout_sec), spdk_json_decode_int32, true},
     128             :         {"reconnect_delay_sec", offsetof(struct spdk_bdev_nvme_opts, reconnect_delay_sec), spdk_json_decode_uint32, true},
     129             :         {"fast_io_fail_timeout_sec", offsetof(struct spdk_bdev_nvme_opts, fast_io_fail_timeout_sec), spdk_json_decode_uint32, true},
     130             :         {"disable_auto_failback", offsetof(struct spdk_bdev_nvme_opts, disable_auto_failback), spdk_json_decode_bool, true},
     131             :         {"generate_uuids", offsetof(struct spdk_bdev_nvme_opts, generate_uuids), spdk_json_decode_bool, true},
     132             :         {"transport_tos", offsetof(struct spdk_bdev_nvme_opts, transport_tos), spdk_json_decode_uint8, true},
     133             :         {"nvme_error_stat", offsetof(struct spdk_bdev_nvme_opts, nvme_error_stat), spdk_json_decode_bool, true},
     134             :         {"rdma_srq_size", offsetof(struct spdk_bdev_nvme_opts, rdma_srq_size), spdk_json_decode_uint32, true},
     135             :         {"io_path_stat", offsetof(struct spdk_bdev_nvme_opts, io_path_stat), spdk_json_decode_bool, true},
     136             :         {"allow_accel_sequence", offsetof(struct spdk_bdev_nvme_opts, allow_accel_sequence), spdk_json_decode_bool, true},
     137             :         {"rdma_max_cq_size", offsetof(struct spdk_bdev_nvme_opts, rdma_max_cq_size), spdk_json_decode_uint32, true},
     138             :         {"rdma_cm_event_timeout_ms", offsetof(struct spdk_bdev_nvme_opts, rdma_cm_event_timeout_ms), spdk_json_decode_uint16, true},
     139             :         {"dhchap_digests", offsetof(struct spdk_bdev_nvme_opts, dhchap_digests), rpc_decode_digest_array, true},
     140             :         {"dhchap_dhgroups", offsetof(struct spdk_bdev_nvme_opts, dhchap_dhgroups), rpc_decode_dhgroup_array, true},
     141             : };
     142             : 
     143             : static void
     144           0 : rpc_bdev_nvme_set_options(struct spdk_jsonrpc_request *request,
     145             :                           const struct spdk_json_val *params)
     146             : {
     147           0 :         struct spdk_bdev_nvme_opts opts;
     148             :         int rc;
     149             : 
     150           0 :         bdev_nvme_get_opts(&opts);
     151           0 :         if (params && spdk_json_decode_object(params, rpc_bdev_nvme_options_decoders,
     152             :                                               SPDK_COUNTOF(rpc_bdev_nvme_options_decoders),
     153             :                                               &opts)) {
     154           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
     155           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
     156             :                                                  "spdk_json_decode_object failed");
     157           0 :                 return;
     158             :         }
     159             : 
     160           0 :         rc = bdev_nvme_set_opts(&opts);
     161           0 :         if (rc == -EPERM) {
     162           0 :                 spdk_jsonrpc_send_error_response(request, -EPERM,
     163             :                                                  "RPC not permitted with nvme controllers already attached");
     164           0 :         } else if (rc) {
     165           0 :                 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
     166             :         } else {
     167           0 :                 spdk_jsonrpc_send_bool_response(request, true);
     168             :         }
     169             : 
     170           0 :         return;
     171             : }
     172           0 : SPDK_RPC_REGISTER("bdev_nvme_set_options", rpc_bdev_nvme_set_options,
     173             :                   SPDK_RPC_STARTUP | SPDK_RPC_RUNTIME)
     174             : 
     175             : struct rpc_bdev_nvme_hotplug {
     176             :         bool enabled;
     177             :         uint64_t period_us;
     178             : };
     179             : 
     180             : static const struct spdk_json_object_decoder rpc_bdev_nvme_hotplug_decoders[] = {
     181             :         {"enable", offsetof(struct rpc_bdev_nvme_hotplug, enabled), spdk_json_decode_bool, false},
     182             :         {"period_us", offsetof(struct rpc_bdev_nvme_hotplug, period_us), spdk_json_decode_uint64, true},
     183             : };
     184             : 
     185             : static void
     186           0 : rpc_bdev_nvme_set_hotplug_done(void *ctx)
     187             : {
     188           0 :         struct spdk_jsonrpc_request *request = ctx;
     189             : 
     190           0 :         spdk_jsonrpc_send_bool_response(request, true);
     191           0 : }
     192             : 
     193             : static void
     194           0 : rpc_bdev_nvme_set_hotplug(struct spdk_jsonrpc_request *request,
     195             :                           const struct spdk_json_val *params)
     196             : {
     197           0 :         struct rpc_bdev_nvme_hotplug req = {false, 0};
     198             :         int rc;
     199             : 
     200           0 :         if (spdk_json_decode_object(params, rpc_bdev_nvme_hotplug_decoders,
     201             :                                     SPDK_COUNTOF(rpc_bdev_nvme_hotplug_decoders), &req)) {
     202           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
     203           0 :                 rc = -EINVAL;
     204           0 :                 goto invalid;
     205             :         }
     206             : 
     207           0 :         rc = bdev_nvme_set_hotplug(req.enabled, req.period_us, rpc_bdev_nvme_set_hotplug_done,
     208             :                                    request);
     209           0 :         if (rc) {
     210           0 :                 goto invalid;
     211             :         }
     212             : 
     213           0 :         return;
     214           0 : invalid:
     215           0 :         spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, spdk_strerror(-rc));
     216             : }
     217           0 : SPDK_RPC_REGISTER("bdev_nvme_set_hotplug", rpc_bdev_nvme_set_hotplug, SPDK_RPC_RUNTIME)
     218             : 
     219             : enum bdev_nvme_multipath_mode {
     220             :         BDEV_NVME_MP_MODE_FAILOVER,
     221             :         BDEV_NVME_MP_MODE_MULTIPATH,
     222             :         BDEV_NVME_MP_MODE_DISABLE,
     223             : };
     224             : 
     225             : struct rpc_bdev_nvme_attach_controller {
     226             :         char *name;
     227             :         char *trtype;
     228             :         char *adrfam;
     229             :         char *traddr;
     230             :         char *trsvcid;
     231             :         char *priority;
     232             :         char *subnqn;
     233             :         char *hostnqn;
     234             :         char *hostaddr;
     235             :         char *hostsvcid;
     236             :         char *psk;
     237             :         char *dhchap_key;
     238             :         char *dhchap_ctrlr_key;
     239             :         enum bdev_nvme_multipath_mode multipath;
     240             :         struct nvme_ctrlr_opts bdev_opts;
     241             :         struct spdk_nvme_ctrlr_opts drv_opts;
     242             :         uint32_t max_bdevs;
     243             : };
     244             : 
     245             : static void
     246           0 : free_rpc_bdev_nvme_attach_controller(struct rpc_bdev_nvme_attach_controller *req)
     247             : {
     248           0 :         free(req->name);
     249           0 :         free(req->trtype);
     250           0 :         free(req->adrfam);
     251           0 :         free(req->traddr);
     252           0 :         free(req->trsvcid);
     253           0 :         free(req->priority);
     254           0 :         free(req->subnqn);
     255           0 :         free(req->hostnqn);
     256           0 :         free(req->hostaddr);
     257           0 :         free(req->hostsvcid);
     258           0 :         free(req->psk);
     259           0 :         free(req->dhchap_key);
     260           0 :         free(req->dhchap_ctrlr_key);
     261           0 :         spdk_memset_s(req->drv_opts.psk, sizeof(req->drv_opts.psk), 0, sizeof(req->drv_opts.psk));
     262           0 : }
     263             : 
     264             : static int
     265           0 : bdev_nvme_decode_reftag(const struct spdk_json_val *val, void *out)
     266             : {
     267           0 :         uint32_t *flag = out;
     268           0 :         bool reftag;
     269             :         int rc;
     270             : 
     271           0 :         rc = spdk_json_decode_bool(val, &reftag);
     272           0 :         if (rc == 0 && reftag == true) {
     273           0 :                 *flag |= SPDK_NVME_IO_FLAGS_PRCHK_REFTAG;
     274             :         }
     275             : 
     276           0 :         return rc;
     277             : }
     278             : 
     279             : static int
     280           0 : bdev_nvme_decode_guard(const struct spdk_json_val *val, void *out)
     281             : {
     282           0 :         uint32_t *flag = out;
     283           0 :         bool guard;
     284             :         int rc;
     285             : 
     286           0 :         rc = spdk_json_decode_bool(val, &guard);
     287           0 :         if (rc == 0 && guard == true) {
     288           0 :                 *flag |= SPDK_NVME_IO_FLAGS_PRCHK_GUARD;
     289             :         }
     290             : 
     291           0 :         return rc;
     292             : }
     293             : 
     294             : static int
     295           0 : bdev_nvme_decode_multipath(const struct spdk_json_val *val, void *out)
     296             : {
     297           0 :         enum bdev_nvme_multipath_mode *multipath = out;
     298             : 
     299           0 :         if (spdk_json_strequal(val, "failover") == true) {
     300           0 :                 *multipath = BDEV_NVME_MP_MODE_FAILOVER;
     301           0 :         } else if (spdk_json_strequal(val, "multipath") == true) {
     302           0 :                 *multipath = BDEV_NVME_MP_MODE_MULTIPATH;
     303           0 :         } else if (spdk_json_strequal(val, "disable") == true) {
     304           0 :                 *multipath = BDEV_NVME_MP_MODE_DISABLE;
     305             :         } else {
     306           0 :                 SPDK_NOTICELOG("Invalid parameter value: multipath\n");
     307           0 :                 return -EINVAL;
     308             :         }
     309             : 
     310           0 :         return 0;
     311             : }
     312             : 
     313             : 
     314             : static const struct spdk_json_object_decoder rpc_bdev_nvme_attach_controller_decoders[] = {
     315             :         {"name", offsetof(struct rpc_bdev_nvme_attach_controller, name), spdk_json_decode_string},
     316             :         {"trtype", offsetof(struct rpc_bdev_nvme_attach_controller, trtype), spdk_json_decode_string},
     317             :         {"traddr", offsetof(struct rpc_bdev_nvme_attach_controller, traddr), spdk_json_decode_string},
     318             : 
     319             :         {"adrfam", offsetof(struct rpc_bdev_nvme_attach_controller, adrfam), spdk_json_decode_string, true},
     320             :         {"trsvcid", offsetof(struct rpc_bdev_nvme_attach_controller, trsvcid), spdk_json_decode_string, true},
     321             :         {"priority", offsetof(struct rpc_bdev_nvme_attach_controller, priority), spdk_json_decode_string, true},
     322             :         {"subnqn", offsetof(struct rpc_bdev_nvme_attach_controller, subnqn), spdk_json_decode_string, true},
     323             :         {"hostnqn", offsetof(struct rpc_bdev_nvme_attach_controller, hostnqn), spdk_json_decode_string, true},
     324             :         {"hostaddr", offsetof(struct rpc_bdev_nvme_attach_controller, hostaddr), spdk_json_decode_string, true},
     325             :         {"hostsvcid", offsetof(struct rpc_bdev_nvme_attach_controller, hostsvcid), spdk_json_decode_string, true},
     326             : 
     327             :         {"prchk_reftag", offsetof(struct rpc_bdev_nvme_attach_controller, bdev_opts.prchk_flags), bdev_nvme_decode_reftag, true},
     328             :         {"prchk_guard", offsetof(struct rpc_bdev_nvme_attach_controller, bdev_opts.prchk_flags), bdev_nvme_decode_guard, true},
     329             :         {"hdgst", offsetof(struct rpc_bdev_nvme_attach_controller, drv_opts.header_digest), spdk_json_decode_bool, true},
     330             :         {"ddgst", offsetof(struct rpc_bdev_nvme_attach_controller, drv_opts.data_digest), spdk_json_decode_bool, true},
     331             :         {"fabrics_connect_timeout_us", offsetof(struct rpc_bdev_nvme_attach_controller, drv_opts.fabrics_connect_timeout_us), spdk_json_decode_uint64, true},
     332             :         {"multipath", offsetof(struct rpc_bdev_nvme_attach_controller, multipath), bdev_nvme_decode_multipath, true},
     333             :         {"num_io_queues", offsetof(struct rpc_bdev_nvme_attach_controller, drv_opts.num_io_queues), spdk_json_decode_uint32, true},
     334             :         {"ctrlr_loss_timeout_sec", offsetof(struct rpc_bdev_nvme_attach_controller, bdev_opts.ctrlr_loss_timeout_sec), spdk_json_decode_int32, true},
     335             :         {"reconnect_delay_sec", offsetof(struct rpc_bdev_nvme_attach_controller, bdev_opts.reconnect_delay_sec), spdk_json_decode_uint32, true},
     336             :         {"fast_io_fail_timeout_sec", offsetof(struct rpc_bdev_nvme_attach_controller, bdev_opts.fast_io_fail_timeout_sec), spdk_json_decode_uint32, true},
     337             :         {"psk", offsetof(struct rpc_bdev_nvme_attach_controller, psk), spdk_json_decode_string, true},
     338             :         {"max_bdevs", offsetof(struct rpc_bdev_nvme_attach_controller, max_bdevs), spdk_json_decode_uint32, true},
     339             :         {"dhchap_key", offsetof(struct rpc_bdev_nvme_attach_controller, dhchap_key), spdk_json_decode_string, true},
     340             :         {"dhchap_ctrlr_key", offsetof(struct rpc_bdev_nvme_attach_controller, dhchap_ctrlr_key), spdk_json_decode_string, true},
     341             : };
     342             : 
     343             : #define DEFAULT_MAX_BDEVS_PER_RPC 128
     344             : 
     345             : struct rpc_bdev_nvme_attach_controller_ctx {
     346             :         struct rpc_bdev_nvme_attach_controller req;
     347             :         size_t bdev_count;
     348             :         const char **names;
     349             :         struct spdk_jsonrpc_request *request;
     350             : };
     351             : 
     352             : static void
     353           0 : free_rpc_bdev_nvme_attach_controller_ctx(struct rpc_bdev_nvme_attach_controller_ctx *ctx)
     354             : {
     355           0 :         free_rpc_bdev_nvme_attach_controller(&ctx->req);
     356           0 :         free(ctx->names);
     357           0 :         free(ctx);
     358           0 : }
     359             : 
     360             : static void
     361           0 : rpc_bdev_nvme_attach_controller_examined(void *cb_ctx)
     362             : {
     363           0 :         struct rpc_bdev_nvme_attach_controller_ctx *ctx = cb_ctx;
     364           0 :         struct spdk_jsonrpc_request *request = ctx->request;
     365             :         struct spdk_json_write_ctx *w;
     366             :         size_t i;
     367             : 
     368           0 :         w = spdk_jsonrpc_begin_result(request);
     369           0 :         spdk_json_write_array_begin(w);
     370           0 :         for (i = 0; i < ctx->bdev_count; i++) {
     371           0 :                 spdk_json_write_string(w, ctx->names[i]);
     372             :         }
     373           0 :         spdk_json_write_array_end(w);
     374           0 :         spdk_jsonrpc_end_result(request, w);
     375             : 
     376           0 :         free_rpc_bdev_nvme_attach_controller_ctx(ctx);
     377           0 : }
     378             : 
     379             : static void
     380           0 : rpc_bdev_nvme_attach_controller_done(void *cb_ctx, size_t bdev_count, int rc)
     381             : {
     382           0 :         struct rpc_bdev_nvme_attach_controller_ctx *ctx = cb_ctx;
     383           0 :         struct spdk_jsonrpc_request *request = ctx->request;
     384             : 
     385           0 :         if (rc < 0) {
     386           0 :                 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
     387           0 :                 free_rpc_bdev_nvme_attach_controller_ctx(ctx);
     388           0 :                 return;
     389             :         }
     390             : 
     391           0 :         ctx->bdev_count = bdev_count;
     392           0 :         spdk_bdev_wait_for_examine(rpc_bdev_nvme_attach_controller_examined, ctx);
     393             : }
     394             : 
     395             : static void
     396           0 : rpc_bdev_nvme_attach_controller(struct spdk_jsonrpc_request *request,
     397             :                                 const struct spdk_json_val *params)
     398             : {
     399             :         struct rpc_bdev_nvme_attach_controller_ctx *ctx;
     400           0 :         struct spdk_nvme_transport_id trid = {};
     401             :         const struct spdk_nvme_ctrlr_opts *drv_opts;
     402             :         const struct spdk_nvme_transport_id *ctrlr_trid;
     403           0 :         struct nvme_ctrlr *ctrlr = NULL;
     404             :         size_t len, maxlen;
     405           0 :         bool multipath = false;
     406             :         int rc;
     407             : 
     408           0 :         ctx = calloc(1, sizeof(*ctx));
     409           0 :         if (!ctx) {
     410           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
     411           0 :                 return;
     412             :         }
     413             : 
     414           0 :         spdk_nvme_ctrlr_get_default_ctrlr_opts(&ctx->req.drv_opts, sizeof(ctx->req.drv_opts));
     415           0 :         bdev_nvme_get_default_ctrlr_opts(&ctx->req.bdev_opts);
     416             :         /* For now, initialize the multipath parameter to add a failover path. This maintains backward
     417             :          * compatibility with past behavior. In the future, this behavior will change to "disable". */
     418           0 :         ctx->req.multipath = BDEV_NVME_MP_MODE_FAILOVER;
     419           0 :         ctx->req.max_bdevs = DEFAULT_MAX_BDEVS_PER_RPC;
     420             : 
     421           0 :         if (spdk_json_decode_object(params, rpc_bdev_nvme_attach_controller_decoders,
     422             :                                     SPDK_COUNTOF(rpc_bdev_nvme_attach_controller_decoders),
     423           0 :                                     &ctx->req)) {
     424           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
     425           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
     426             :                                                  "spdk_json_decode_object failed");
     427           0 :                 goto cleanup;
     428             :         }
     429             : 
     430           0 :         if (ctx->req.max_bdevs == 0) {
     431           0 :                 spdk_jsonrpc_send_error_response(request, -EINVAL, "max_bdevs cannot be zero");
     432           0 :                 goto cleanup;
     433             :         }
     434             : 
     435           0 :         ctx->names = calloc(ctx->req.max_bdevs, sizeof(char *));
     436           0 :         if (ctx->names == NULL) {
     437           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
     438           0 :                 goto cleanup;
     439             :         }
     440             : 
     441             :         /* Parse trstring */
     442           0 :         rc = spdk_nvme_transport_id_populate_trstring(&trid, ctx->req.trtype);
     443           0 :         if (rc < 0) {
     444           0 :                 SPDK_ERRLOG("Failed to parse trtype: %s\n", ctx->req.trtype);
     445           0 :                 spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "Failed to parse trtype: %s",
     446             :                                                      ctx->req.trtype);
     447           0 :                 goto cleanup;
     448             :         }
     449             : 
     450             :         /* Parse trtype */
     451           0 :         rc = spdk_nvme_transport_id_parse_trtype(&trid.trtype, ctx->req.trtype);
     452           0 :         assert(rc == 0);
     453             : 
     454             :         /* Parse traddr */
     455           0 :         maxlen = sizeof(trid.traddr);
     456           0 :         len = strnlen(ctx->req.traddr, maxlen);
     457           0 :         if (len == maxlen) {
     458           0 :                 spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "traddr too long: %s",
     459             :                                                      ctx->req.traddr);
     460           0 :                 goto cleanup;
     461             :         }
     462           0 :         memcpy(trid.traddr, ctx->req.traddr, len + 1);
     463             : 
     464             :         /* Parse adrfam */
     465           0 :         if (ctx->req.adrfam) {
     466           0 :                 rc = spdk_nvme_transport_id_parse_adrfam(&trid.adrfam, ctx->req.adrfam);
     467           0 :                 if (rc < 0) {
     468           0 :                         SPDK_ERRLOG("Failed to parse adrfam: %s\n", ctx->req.adrfam);
     469           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "Failed to parse adrfam: %s",
     470             :                                                              ctx->req.adrfam);
     471           0 :                         goto cleanup;
     472             :                 }
     473             :         }
     474             : 
     475             :         /* Parse trsvcid */
     476           0 :         if (ctx->req.trsvcid) {
     477           0 :                 maxlen = sizeof(trid.trsvcid);
     478           0 :                 len = strnlen(ctx->req.trsvcid, maxlen);
     479           0 :                 if (len == maxlen) {
     480           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "trsvcid too long: %s",
     481             :                                                              ctx->req.trsvcid);
     482           0 :                         goto cleanup;
     483             :                 }
     484           0 :                 memcpy(trid.trsvcid, ctx->req.trsvcid, len + 1);
     485             :         }
     486             : 
     487             :         /* Parse priority for the NVMe-oF transport connection */
     488           0 :         if (ctx->req.priority) {
     489           0 :                 trid.priority = spdk_strtol(ctx->req.priority, 10);
     490             :         }
     491             : 
     492             :         /* Parse subnqn */
     493           0 :         if (ctx->req.subnqn) {
     494           0 :                 maxlen = sizeof(trid.subnqn);
     495           0 :                 len = strnlen(ctx->req.subnqn, maxlen);
     496           0 :                 if (len == maxlen) {
     497           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "subnqn too long: %s",
     498             :                                                              ctx->req.subnqn);
     499           0 :                         goto cleanup;
     500             :                 }
     501           0 :                 memcpy(trid.subnqn, ctx->req.subnqn, len + 1);
     502             :         }
     503             : 
     504           0 :         if (ctx->req.hostnqn) {
     505           0 :                 maxlen = sizeof(ctx->req.drv_opts.hostnqn);
     506           0 :                 len = strnlen(ctx->req.hostnqn, maxlen);
     507           0 :                 if (len == maxlen) {
     508           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "hostnqn too long: %s",
     509             :                                                              ctx->req.hostnqn);
     510           0 :                         goto cleanup;
     511             :                 }
     512           0 :                 memcpy(ctx->req.drv_opts.hostnqn, ctx->req.hostnqn, len + 1);
     513             :         }
     514             : 
     515           0 :         if (ctx->req.psk) {
     516           0 :                 if (!g_tls_log) {
     517           0 :                         SPDK_NOTICELOG("TLS support is considered experimental\n");
     518           0 :                         g_tls_log = true;
     519             :                 }
     520             : 
     521           0 :                 rc = snprintf(ctx->req.bdev_opts.psk, sizeof(ctx->req.bdev_opts.psk), "%s", ctx->req.psk);
     522           0 :                 if (rc < 0 || (size_t)rc >= sizeof(ctx->req.bdev_opts.psk)) {
     523           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "Could not store PSK: %s",
     524             :                                                              ctx->req.psk);
     525           0 :                         goto cleanup;
     526             :                 }
     527             :         }
     528             : 
     529           0 :         if (ctx->req.hostaddr) {
     530           0 :                 maxlen = sizeof(ctx->req.drv_opts.src_addr);
     531           0 :                 len = strnlen(ctx->req.hostaddr, maxlen);
     532           0 :                 if (len == maxlen) {
     533           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "hostaddr too long: %s",
     534             :                                                              ctx->req.hostaddr);
     535           0 :                         goto cleanup;
     536             :                 }
     537           0 :                 snprintf(ctx->req.drv_opts.src_addr, maxlen, "%s", ctx->req.hostaddr);
     538             :         }
     539             : 
     540           0 :         if (ctx->req.hostsvcid) {
     541           0 :                 maxlen = sizeof(ctx->req.drv_opts.src_svcid);
     542           0 :                 len = strnlen(ctx->req.hostsvcid, maxlen);
     543           0 :                 if (len == maxlen) {
     544           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "hostsvcid too long: %s",
     545             :                                                              ctx->req.hostsvcid);
     546           0 :                         goto cleanup;
     547             :                 }
     548           0 :                 snprintf(ctx->req.drv_opts.src_svcid, maxlen, "%s", ctx->req.hostsvcid);
     549             :         }
     550             : 
     551           0 :         ctrlr = nvme_ctrlr_get_by_name(ctx->req.name);
     552             : 
     553           0 :         if (ctrlr) {
     554             :                 /* This controller already exists. Check what the user wants to do. */
     555           0 :                 if (ctx->req.multipath == BDEV_NVME_MP_MODE_DISABLE) {
     556             :                         /* The user does not want to do any form of multipathing. */
     557           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EALREADY,
     558             :                                                              "A controller named %s already exists and multipath is disabled\n",
     559             :                                                              ctx->req.name);
     560           0 :                         goto cleanup;
     561             :                 }
     562             : 
     563           0 :                 assert(ctx->req.multipath == BDEV_NVME_MP_MODE_FAILOVER ||
     564             :                        ctx->req.multipath == BDEV_NVME_MP_MODE_MULTIPATH);
     565             : 
     566             :                 /* The user wants to add this as a failover path or add this to create multipath. */
     567           0 :                 drv_opts = spdk_nvme_ctrlr_get_opts(ctrlr->ctrlr);
     568           0 :                 ctrlr_trid = spdk_nvme_ctrlr_get_transport_id(ctrlr->ctrlr);
     569             : 
     570           0 :                 if (strncmp(trid.traddr, ctrlr_trid->traddr, sizeof(trid.traddr)) == 0 &&
     571           0 :                     strncmp(trid.trsvcid, ctrlr_trid->trsvcid, sizeof(trid.trsvcid)) == 0 &&
     572           0 :                     strncmp(ctx->req.drv_opts.src_addr, drv_opts->src_addr, sizeof(drv_opts->src_addr)) == 0 &&
     573           0 :                     strncmp(ctx->req.drv_opts.src_svcid, drv_opts->src_svcid, sizeof(drv_opts->src_svcid)) == 0) {
     574             :                         /* Exactly same network path can't be added a second time */
     575           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EALREADY,
     576             :                                                              "A controller named %s already exists with the specified network path\n",
     577             :                                                              ctx->req.name);
     578           0 :                         goto cleanup;
     579             :                 }
     580             : 
     581           0 :                 if (strncmp(trid.subnqn,
     582           0 :                             ctrlr_trid->subnqn,
     583             :                             SPDK_NVMF_NQN_MAX_LEN) != 0) {
     584             :                         /* Different SUBNQN is not allowed when specifying the same controller name. */
     585           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL,
     586             :                                                              "A controller named %s already exists, but uses a different subnqn (%s)\n",
     587           0 :                                                              ctx->req.name, ctrlr_trid->subnqn);
     588           0 :                         goto cleanup;
     589             :                 }
     590             : 
     591           0 :                 if (strncmp(ctx->req.drv_opts.hostnqn, drv_opts->hostnqn, SPDK_NVMF_NQN_MAX_LEN) != 0) {
     592             :                         /* Different HOSTNQN is not allowed when specifying the same controller name. */
     593           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL,
     594             :                                                              "A controller named %s already exists, but uses a different hostnqn (%s)\n",
     595           0 :                                                              ctx->req.name, drv_opts->hostnqn);
     596           0 :                         goto cleanup;
     597             :                 }
     598             : 
     599           0 :                 if (ctx->req.bdev_opts.prchk_flags) {
     600           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL,
     601             :                                                              "A controller named %s already exists. To add a path, do not specify PI options.\n",
     602             :                                                              ctx->req.name);
     603           0 :                         goto cleanup;
     604             :                 }
     605             : 
     606           0 :                 ctx->req.bdev_opts.prchk_flags = ctrlr->opts.prchk_flags;
     607             :         }
     608             : 
     609           0 :         if (ctx->req.multipath == BDEV_NVME_MP_MODE_MULTIPATH) {
     610           0 :                 multipath = true;
     611             :         }
     612             : 
     613           0 :         if (ctx->req.drv_opts.num_io_queues == 0 || ctx->req.drv_opts.num_io_queues > UINT16_MAX + 1) {
     614           0 :                 spdk_jsonrpc_send_error_response_fmt(request, -EINVAL,
     615             :                                                      "num_io_queues out of bounds, min: %u max: %u\n",
     616             :                                                      1, UINT16_MAX + 1);
     617           0 :                 goto cleanup;
     618             :         }
     619             : 
     620           0 :         ctx->request = request;
     621             :         /* Should already be zero due to the calloc(), but set explicitly for clarity. */
     622           0 :         ctx->req.bdev_opts.from_discovery_service = false;
     623           0 :         ctx->req.bdev_opts.dhchap_key = ctx->req.dhchap_key;
     624           0 :         ctx->req.bdev_opts.dhchap_ctrlr_key = ctx->req.dhchap_ctrlr_key;
     625           0 :         rc = bdev_nvme_create(&trid, ctx->req.name, ctx->names, ctx->req.max_bdevs,
     626             :                               rpc_bdev_nvme_attach_controller_done, ctx, &ctx->req.drv_opts,
     627             :                               &ctx->req.bdev_opts, multipath);
     628           0 :         if (rc) {
     629           0 :                 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
     630           0 :                 goto cleanup;
     631             :         }
     632             : 
     633           0 :         return;
     634             : 
     635           0 : cleanup:
     636           0 :         free_rpc_bdev_nvme_attach_controller_ctx(ctx);
     637             : }
     638           0 : SPDK_RPC_REGISTER("bdev_nvme_attach_controller", rpc_bdev_nvme_attach_controller,
     639             :                   SPDK_RPC_RUNTIME)
     640             : 
     641             : static void
     642           0 : rpc_dump_nvme_bdev_controller_info(struct nvme_bdev_ctrlr *nbdev_ctrlr, void *ctx)
     643             : {
     644           0 :         struct spdk_json_write_ctx      *w = ctx;
     645             :         struct nvme_ctrlr               *nvme_ctrlr;
     646             : 
     647           0 :         spdk_json_write_object_begin(w);
     648           0 :         spdk_json_write_named_string(w, "name", nbdev_ctrlr->name);
     649             : 
     650           0 :         spdk_json_write_named_array_begin(w, "ctrlrs");
     651           0 :         TAILQ_FOREACH(nvme_ctrlr, &nbdev_ctrlr->ctrlrs, tailq) {
     652           0 :                 nvme_ctrlr_info_json(w, nvme_ctrlr);
     653             :         }
     654           0 :         spdk_json_write_array_end(w);
     655           0 :         spdk_json_write_object_end(w);
     656           0 : }
     657             : 
     658             : struct rpc_bdev_nvme_get_controllers {
     659             :         char *name;
     660             : };
     661             : 
     662             : static void
     663           0 : free_rpc_bdev_nvme_get_controllers(struct rpc_bdev_nvme_get_controllers *r)
     664             : {
     665           0 :         free(r->name);
     666           0 : }
     667             : 
     668             : static const struct spdk_json_object_decoder rpc_bdev_nvme_get_controllers_decoders[] = {
     669             :         {"name", offsetof(struct rpc_bdev_nvme_get_controllers, name), spdk_json_decode_string, true},
     670             : };
     671             : 
     672             : static void
     673           0 : rpc_bdev_nvme_get_controllers(struct spdk_jsonrpc_request *request,
     674             :                               const struct spdk_json_val *params)
     675             : {
     676           0 :         struct rpc_bdev_nvme_get_controllers req = {};
     677             :         struct spdk_json_write_ctx *w;
     678           0 :         struct nvme_bdev_ctrlr *nbdev_ctrlr = NULL;
     679             : 
     680           0 :         if (params && spdk_json_decode_object(params, rpc_bdev_nvme_get_controllers_decoders,
     681             :                                               SPDK_COUNTOF(rpc_bdev_nvme_get_controllers_decoders),
     682             :                                               &req)) {
     683           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
     684           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
     685             :                                                  "spdk_json_decode_object failed");
     686           0 :                 goto cleanup;
     687             :         }
     688             : 
     689           0 :         if (req.name) {
     690           0 :                 nbdev_ctrlr = nvme_bdev_ctrlr_get_by_name(req.name);
     691           0 :                 if (nbdev_ctrlr == NULL) {
     692           0 :                         SPDK_ERRLOG("ctrlr '%s' does not exist\n", req.name);
     693           0 :                         spdk_jsonrpc_send_error_response_fmt(request, EINVAL, "Controller %s does not exist", req.name);
     694           0 :                         goto cleanup;
     695             :                 }
     696             :         }
     697             : 
     698           0 :         w = spdk_jsonrpc_begin_result(request);
     699           0 :         spdk_json_write_array_begin(w);
     700             : 
     701           0 :         if (nbdev_ctrlr != NULL) {
     702           0 :                 rpc_dump_nvme_bdev_controller_info(nbdev_ctrlr, w);
     703             :         } else {
     704           0 :                 nvme_bdev_ctrlr_for_each(rpc_dump_nvme_bdev_controller_info, w);
     705             :         }
     706             : 
     707           0 :         spdk_json_write_array_end(w);
     708             : 
     709           0 :         spdk_jsonrpc_end_result(request, w);
     710             : 
     711           0 : cleanup:
     712           0 :         free_rpc_bdev_nvme_get_controllers(&req);
     713           0 : }
     714           0 : SPDK_RPC_REGISTER("bdev_nvme_get_controllers", rpc_bdev_nvme_get_controllers, SPDK_RPC_RUNTIME)
     715             : 
     716             : struct rpc_bdev_nvme_detach_controller {
     717             :         char *name;
     718             :         char *trtype;
     719             :         char *adrfam;
     720             :         char *traddr;
     721             :         char *trsvcid;
     722             :         char *subnqn;
     723             :         char *hostaddr;
     724             :         char *hostsvcid;
     725             : };
     726             : 
     727             : static void
     728           0 : free_rpc_bdev_nvme_detach_controller(struct rpc_bdev_nvme_detach_controller *req)
     729             : {
     730           0 :         free(req->name);
     731           0 :         free(req->trtype);
     732           0 :         free(req->adrfam);
     733           0 :         free(req->traddr);
     734           0 :         free(req->trsvcid);
     735           0 :         free(req->subnqn);
     736           0 :         free(req->hostaddr);
     737           0 :         free(req->hostsvcid);
     738           0 : }
     739             : 
     740             : static const struct spdk_json_object_decoder rpc_bdev_nvme_detach_controller_decoders[] = {
     741             :         {"name", offsetof(struct rpc_bdev_nvme_detach_controller, name), spdk_json_decode_string},
     742             :         {"trtype", offsetof(struct rpc_bdev_nvme_detach_controller, trtype), spdk_json_decode_string, true},
     743             :         {"traddr", offsetof(struct rpc_bdev_nvme_detach_controller, traddr), spdk_json_decode_string, true},
     744             :         {"adrfam", offsetof(struct rpc_bdev_nvme_detach_controller, adrfam), spdk_json_decode_string, true},
     745             :         {"trsvcid", offsetof(struct rpc_bdev_nvme_detach_controller, trsvcid), spdk_json_decode_string, true},
     746             :         {"subnqn", offsetof(struct rpc_bdev_nvme_detach_controller, subnqn), spdk_json_decode_string, true},
     747             :         {"hostaddr", offsetof(struct rpc_bdev_nvme_detach_controller, hostaddr), spdk_json_decode_string, true},
     748             :         {"hostsvcid", offsetof(struct rpc_bdev_nvme_detach_controller, hostsvcid), spdk_json_decode_string, true},
     749             : };
     750             : 
     751             : static void
     752           0 : rpc_bdev_nvme_detach_controller_done(void *arg, int rc)
     753             : {
     754           0 :         struct spdk_jsonrpc_request *request = arg;
     755             : 
     756           0 :         if (rc == 0) {
     757           0 :                 spdk_jsonrpc_send_bool_response(request, true);
     758             :         } else {
     759           0 :                 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
     760             :         }
     761           0 : }
     762             : 
     763             : static void
     764           0 : rpc_bdev_nvme_detach_controller(struct spdk_jsonrpc_request *request,
     765             :                                 const struct spdk_json_val *params)
     766             : {
     767           0 :         struct rpc_bdev_nvme_detach_controller req = {NULL};
     768           0 :         struct nvme_path_id path = {};
     769             :         size_t len, maxlen;
     770           0 :         int rc = 0;
     771             : 
     772           0 :         if (spdk_json_decode_object(params, rpc_bdev_nvme_detach_controller_decoders,
     773             :                                     SPDK_COUNTOF(rpc_bdev_nvme_detach_controller_decoders),
     774             :                                     &req)) {
     775           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
     776             :                                                  "spdk_json_decode_object failed");
     777           0 :                 goto cleanup;
     778             :         }
     779             : 
     780           0 :         if (req.trtype != NULL) {
     781           0 :                 rc = spdk_nvme_transport_id_populate_trstring(&path.trid, req.trtype);
     782           0 :                 if (rc < 0) {
     783           0 :                         SPDK_ERRLOG("Failed to parse trtype: %s\n", req.trtype);
     784           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "Failed to parse trtype: %s",
     785             :                                                              req.trtype);
     786           0 :                         goto cleanup;
     787             :                 }
     788             : 
     789           0 :                 rc = spdk_nvme_transport_id_parse_trtype(&path.trid.trtype, req.trtype);
     790           0 :                 if (rc < 0) {
     791           0 :                         SPDK_ERRLOG("Failed to parse trtype: %s\n", req.trtype);
     792           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "Failed to parse trtype: %s",
     793             :                                                              req.trtype);
     794           0 :                         goto cleanup;
     795             :                 }
     796             :         }
     797             : 
     798           0 :         if (req.traddr != NULL) {
     799           0 :                 maxlen = sizeof(path.trid.traddr);
     800           0 :                 len = strnlen(req.traddr, maxlen);
     801           0 :                 if (len == maxlen) {
     802           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "traddr too long: %s",
     803             :                                                              req.traddr);
     804           0 :                         goto cleanup;
     805             :                 }
     806           0 :                 memcpy(path.trid.traddr, req.traddr, len + 1);
     807             :         }
     808             : 
     809           0 :         if (req.adrfam != NULL) {
     810           0 :                 rc = spdk_nvme_transport_id_parse_adrfam(&path.trid.adrfam, req.adrfam);
     811           0 :                 if (rc < 0) {
     812           0 :                         SPDK_ERRLOG("Failed to parse adrfam: %s\n", req.adrfam);
     813           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "Failed to parse adrfam: %s",
     814             :                                                              req.adrfam);
     815           0 :                         goto cleanup;
     816             :                 }
     817             :         }
     818             : 
     819           0 :         if (req.trsvcid != NULL) {
     820           0 :                 maxlen = sizeof(path.trid.trsvcid);
     821           0 :                 len = strnlen(req.trsvcid, maxlen);
     822           0 :                 if (len == maxlen) {
     823           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "trsvcid too long: %s",
     824             :                                                              req.trsvcid);
     825           0 :                         goto cleanup;
     826             :                 }
     827           0 :                 memcpy(path.trid.trsvcid, req.trsvcid, len + 1);
     828             :         }
     829             : 
     830             :         /* Parse subnqn */
     831           0 :         if (req.subnqn != NULL) {
     832           0 :                 maxlen = sizeof(path.trid.subnqn);
     833           0 :                 len = strnlen(req.subnqn, maxlen);
     834           0 :                 if (len == maxlen) {
     835           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "subnqn too long: %s",
     836             :                                                              req.subnqn);
     837           0 :                         goto cleanup;
     838             :                 }
     839           0 :                 memcpy(path.trid.subnqn, req.subnqn, len + 1);
     840             :         }
     841             : 
     842           0 :         if (req.hostaddr) {
     843           0 :                 maxlen = sizeof(path.hostid.hostaddr);
     844           0 :                 len = strnlen(req.hostaddr, maxlen);
     845           0 :                 if (len == maxlen) {
     846           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "hostaddr too long: %s",
     847             :                                                              req.hostaddr);
     848           0 :                         goto cleanup;
     849             :                 }
     850           0 :                 snprintf(path.hostid.hostaddr, maxlen, "%s", req.hostaddr);
     851             :         }
     852             : 
     853           0 :         if (req.hostsvcid) {
     854           0 :                 maxlen = sizeof(path.hostid.hostsvcid);
     855           0 :                 len = strnlen(req.hostsvcid, maxlen);
     856           0 :                 if (len == maxlen) {
     857           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "hostsvcid too long: %s",
     858             :                                                              req.hostsvcid);
     859           0 :                         goto cleanup;
     860             :                 }
     861           0 :                 snprintf(path.hostid.hostsvcid, maxlen, "%s", req.hostsvcid);
     862             :         }
     863             : 
     864           0 :         rc = bdev_nvme_delete(req.name, &path, rpc_bdev_nvme_detach_controller_done, request);
     865             : 
     866           0 :         if (rc != 0) {
     867           0 :                 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
     868             :         }
     869             : 
     870           0 : cleanup:
     871           0 :         free_rpc_bdev_nvme_detach_controller(&req);
     872           0 : }
     873           0 : SPDK_RPC_REGISTER("bdev_nvme_detach_controller", rpc_bdev_nvme_detach_controller,
     874             :                   SPDK_RPC_RUNTIME)
     875             : 
     876             : struct rpc_apply_firmware {
     877             :         char *filename;
     878             :         char *bdev_name;
     879             : };
     880             : 
     881             : static void
     882           0 : free_rpc_apply_firmware(struct rpc_apply_firmware *req)
     883             : {
     884           0 :         free(req->filename);
     885           0 :         free(req->bdev_name);
     886           0 : }
     887             : 
     888             : static const struct spdk_json_object_decoder rpc_apply_firmware_decoders[] = {
     889             :         {"filename", offsetof(struct rpc_apply_firmware, filename), spdk_json_decode_string},
     890             :         {"bdev_name", offsetof(struct rpc_apply_firmware, bdev_name), spdk_json_decode_string},
     891             : };
     892             : 
     893             : struct firmware_update_info {
     894             :         void                            *fw_image;
     895             :         void                            *p;
     896             :         unsigned int                    size;
     897             :         unsigned int                    size_remaining;
     898             :         unsigned int                    offset;
     899             :         unsigned int                    transfer;
     900             :         bool                            success;
     901             : 
     902             :         struct spdk_bdev_desc           *desc;
     903             :         struct spdk_io_channel          *ch;
     904             :         struct spdk_thread              *orig_thread;
     905             :         struct spdk_jsonrpc_request     *request;
     906             :         struct spdk_nvme_ctrlr          *ctrlr;
     907             :         struct rpc_apply_firmware       req;
     908             : };
     909             : 
     910             : static void
     911           0 : apply_firmware_cleanup(struct firmware_update_info *firm_ctx)
     912             : {
     913           0 :         assert(firm_ctx != NULL);
     914           0 :         assert(firm_ctx->orig_thread == spdk_get_thread());
     915             : 
     916           0 :         if (firm_ctx->fw_image) {
     917           0 :                 spdk_free(firm_ctx->fw_image);
     918             :         }
     919             : 
     920           0 :         free_rpc_apply_firmware(&firm_ctx->req);
     921             : 
     922           0 :         if (firm_ctx->ch) {
     923           0 :                 spdk_put_io_channel(firm_ctx->ch);
     924             :         }
     925             : 
     926           0 :         if (firm_ctx->desc) {
     927           0 :                 spdk_bdev_close(firm_ctx->desc);
     928             :         }
     929             : 
     930           0 :         free(firm_ctx);
     931           0 : }
     932             : 
     933             : static void
     934           0 : _apply_firmware_complete_reset(void *ctx)
     935             : {
     936             :         struct spdk_json_write_ctx              *w;
     937           0 :         struct firmware_update_info *firm_ctx = ctx;
     938             : 
     939           0 :         assert(firm_ctx->orig_thread == spdk_get_thread());
     940             : 
     941           0 :         if (!firm_ctx->success) {
     942           0 :                 spdk_jsonrpc_send_error_response(firm_ctx->request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
     943             :                                                  "firmware commit failed.");
     944           0 :                 apply_firmware_cleanup(firm_ctx);
     945           0 :                 return;
     946             :         }
     947             : 
     948           0 :         if (spdk_nvme_ctrlr_reset(firm_ctx->ctrlr) != 0) {
     949           0 :                 spdk_jsonrpc_send_error_response(firm_ctx->request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
     950             :                                                  "Controller reset failed.");
     951           0 :                 apply_firmware_cleanup(firm_ctx);
     952           0 :                 return;
     953             :         }
     954             : 
     955           0 :         w = spdk_jsonrpc_begin_result(firm_ctx->request);
     956           0 :         spdk_json_write_string(w, "firmware commit succeeded. Controller reset in progress.");
     957           0 :         spdk_jsonrpc_end_result(firm_ctx->request, w);
     958           0 :         apply_firmware_cleanup(firm_ctx);
     959             : }
     960             : 
     961             : static void
     962           0 : apply_firmware_complete_reset(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
     963             : {
     964           0 :         struct firmware_update_info *firm_ctx = cb_arg;
     965             : 
     966           0 :         spdk_bdev_free_io(bdev_io);
     967             : 
     968           0 :         firm_ctx->success = success;
     969             : 
     970           0 :         spdk_thread_exec_msg(firm_ctx->orig_thread, _apply_firmware_complete_reset, firm_ctx);
     971           0 : }
     972             : 
     973             : static void apply_firmware_complete(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg);
     974             : 
     975             : static void
     976           0 : _apply_firmware_complete(void *ctx)
     977             : {
     978           0 :         struct spdk_nvme_cmd                    cmd = {};
     979           0 :         struct spdk_nvme_fw_commit              fw_commit;
     980           0 :         int                                     slot = 0;
     981             :         int                                     rc;
     982           0 :         struct firmware_update_info *firm_ctx = ctx;
     983           0 :         enum spdk_nvme_fw_commit_action commit_action = SPDK_NVME_FW_COMMIT_REPLACE_AND_ENABLE_IMG;
     984             : 
     985           0 :         assert(firm_ctx->orig_thread == spdk_get_thread());
     986             : 
     987           0 :         if (!firm_ctx->success) {
     988           0 :                 spdk_jsonrpc_send_error_response(firm_ctx->request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
     989             :                                                  "firmware download failed .");
     990           0 :                 apply_firmware_cleanup(firm_ctx);
     991           0 :                 return;
     992             :         }
     993             : 
     994           0 :         firm_ctx->p += firm_ctx->transfer;
     995           0 :         firm_ctx->offset += firm_ctx->transfer;
     996           0 :         firm_ctx->size_remaining -= firm_ctx->transfer;
     997             : 
     998           0 :         switch (firm_ctx->size_remaining) {
     999           0 :         case 0:
    1000             :                 /* firmware download completed. Commit firmware */
    1001           0 :                 memset(&fw_commit, 0, sizeof(struct spdk_nvme_fw_commit));
    1002           0 :                 fw_commit.fs = slot;
    1003           0 :                 fw_commit.ca = commit_action;
    1004             : 
    1005           0 :                 cmd.opc = SPDK_NVME_OPC_FIRMWARE_COMMIT;
    1006           0 :                 memcpy(&cmd.cdw10, &fw_commit, sizeof(uint32_t));
    1007           0 :                 rc = spdk_bdev_nvme_admin_passthru(firm_ctx->desc, firm_ctx->ch, &cmd, NULL, 0,
    1008             :                                                    apply_firmware_complete_reset, firm_ctx);
    1009           0 :                 if (rc) {
    1010           0 :                         spdk_jsonrpc_send_error_response(firm_ctx->request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1011             :                                                          "firmware commit failed.");
    1012           0 :                         apply_firmware_cleanup(firm_ctx);
    1013           0 :                         return;
    1014             :                 }
    1015           0 :                 break;
    1016           0 :         default:
    1017           0 :                 firm_ctx->transfer = spdk_min(firm_ctx->size_remaining, 4096);
    1018           0 :                 cmd.opc = SPDK_NVME_OPC_FIRMWARE_IMAGE_DOWNLOAD;
    1019             : 
    1020           0 :                 cmd.cdw10 = spdk_nvme_bytes_to_numd(firm_ctx->transfer);
    1021           0 :                 cmd.cdw11 = firm_ctx->offset >> 2;
    1022           0 :                 rc = spdk_bdev_nvme_admin_passthru(firm_ctx->desc, firm_ctx->ch, &cmd, firm_ctx->p,
    1023           0 :                                                    firm_ctx->transfer, apply_firmware_complete, firm_ctx);
    1024           0 :                 if (rc) {
    1025           0 :                         spdk_jsonrpc_send_error_response(firm_ctx->request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1026             :                                                          "firmware download failed.");
    1027           0 :                         apply_firmware_cleanup(firm_ctx);
    1028           0 :                         return;
    1029             :                 }
    1030           0 :                 break;
    1031             :         }
    1032             : }
    1033             : 
    1034             : static void
    1035           0 : apply_firmware_complete(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
    1036             : {
    1037           0 :         struct firmware_update_info *firm_ctx = cb_arg;
    1038             : 
    1039           0 :         spdk_bdev_free_io(bdev_io);
    1040             : 
    1041           0 :         firm_ctx->success = success;
    1042             : 
    1043           0 :         spdk_thread_exec_msg(firm_ctx->orig_thread, _apply_firmware_complete, firm_ctx);
    1044           0 : }
    1045             : 
    1046             : static void
    1047           0 : apply_firmware_open_cb(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *event_ctx)
    1048             : {
    1049           0 : }
    1050             : 
    1051             : static void
    1052           0 : rpc_bdev_nvme_apply_firmware(struct spdk_jsonrpc_request *request,
    1053             :                              const struct spdk_json_val *params)
    1054             : {
    1055             :         int                                     rc;
    1056           0 :         int                                     fd = -1;
    1057           0 :         struct stat                             fw_stat;
    1058             :         struct spdk_bdev                        *bdev;
    1059           0 :         struct spdk_nvme_cmd                    cmd = {};
    1060             :         struct firmware_update_info             *firm_ctx;
    1061             : 
    1062           0 :         firm_ctx = calloc(1, sizeof(struct firmware_update_info));
    1063           0 :         if (!firm_ctx) {
    1064           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1065             :                                                  "Memory allocation error.");
    1066           0 :                 return;
    1067             :         }
    1068           0 :         firm_ctx->fw_image = NULL;
    1069           0 :         firm_ctx->request = request;
    1070           0 :         firm_ctx->orig_thread = spdk_get_thread();
    1071             : 
    1072           0 :         if (spdk_json_decode_object(params, rpc_apply_firmware_decoders,
    1073           0 :                                     SPDK_COUNTOF(rpc_apply_firmware_decoders), &firm_ctx->req)) {
    1074           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1075             :                                                  "spdk_json_decode_object failed.");
    1076           0 :                 goto err;
    1077             :         }
    1078             : 
    1079           0 :         if (spdk_bdev_open_ext(firm_ctx->req.bdev_name, true, apply_firmware_open_cb, NULL,
    1080             :                                &firm_ctx->desc) != 0) {
    1081           0 :                 spdk_jsonrpc_send_error_response_fmt(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1082             :                                                      "bdev %s could not be opened",
    1083             :                                                      firm_ctx->req.bdev_name);
    1084           0 :                 goto err;
    1085             :         }
    1086           0 :         bdev = spdk_bdev_desc_get_bdev(firm_ctx->desc);
    1087             : 
    1088           0 :         if ((firm_ctx->ctrlr = bdev_nvme_get_ctrlr(bdev)) == NULL) {
    1089           0 :                 spdk_jsonrpc_send_error_response_fmt(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1090             :                                                      "Controller information for %s were not found.",
    1091             :                                                      firm_ctx->req.bdev_name);
    1092           0 :                 goto err;
    1093             :         }
    1094             : 
    1095           0 :         firm_ctx->ch = spdk_bdev_get_io_channel(firm_ctx->desc);
    1096           0 :         if (!firm_ctx->ch) {
    1097           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1098             :                                                  "No channels were found.");
    1099           0 :                 goto err;
    1100             :         }
    1101             : 
    1102           0 :         fd = open(firm_ctx->req.filename, O_RDONLY);
    1103           0 :         if (fd < 0) {
    1104           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1105             :                                                  "open file failed.");
    1106           0 :                 goto err;
    1107             :         }
    1108             : 
    1109           0 :         rc = fstat(fd, &fw_stat);
    1110           0 :         if (rc < 0) {
    1111           0 :                 close(fd);
    1112           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1113             :                                                  "fstat failed.");
    1114           0 :                 goto err;
    1115             :         }
    1116             : 
    1117           0 :         firm_ctx->size = fw_stat.st_size;
    1118           0 :         if (fw_stat.st_size % 4) {
    1119           0 :                 close(fd);
    1120           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1121             :                                                  "Firmware image size is not multiple of 4.");
    1122           0 :                 goto err;
    1123             :         }
    1124             : 
    1125           0 :         firm_ctx->fw_image = spdk_zmalloc(firm_ctx->size, 4096, NULL,
    1126             :                                           SPDK_ENV_LCORE_ID_ANY, SPDK_MALLOC_DMA);
    1127           0 :         if (!firm_ctx->fw_image) {
    1128           0 :                 close(fd);
    1129           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1130             :                                                  "Memory allocation error.");
    1131           0 :                 goto err;
    1132             :         }
    1133           0 :         firm_ctx->p = firm_ctx->fw_image;
    1134             : 
    1135           0 :         if (read(fd, firm_ctx->p, firm_ctx->size) != ((ssize_t)(firm_ctx->size))) {
    1136           0 :                 close(fd);
    1137           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1138             :                                                  "Read firmware image failed!");
    1139           0 :                 goto err;
    1140             :         }
    1141           0 :         close(fd);
    1142             : 
    1143           0 :         firm_ctx->offset = 0;
    1144           0 :         firm_ctx->size_remaining = firm_ctx->size;
    1145           0 :         firm_ctx->transfer = spdk_min(firm_ctx->size_remaining, 4096);
    1146             : 
    1147           0 :         cmd.opc = SPDK_NVME_OPC_FIRMWARE_IMAGE_DOWNLOAD;
    1148           0 :         cmd.cdw10 = spdk_nvme_bytes_to_numd(firm_ctx->transfer);
    1149           0 :         cmd.cdw11 = firm_ctx->offset >> 2;
    1150             : 
    1151           0 :         rc = spdk_bdev_nvme_admin_passthru(firm_ctx->desc, firm_ctx->ch, &cmd, firm_ctx->p,
    1152           0 :                                            firm_ctx->transfer, apply_firmware_complete, firm_ctx);
    1153           0 :         if (rc == 0) {
    1154             :                 /* normal return here. */
    1155           0 :                 return;
    1156             :         }
    1157             : 
    1158           0 :         spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1159             :                                          "Read firmware image failed!");
    1160           0 : err:
    1161           0 :         apply_firmware_cleanup(firm_ctx);
    1162             : }
    1163           0 : SPDK_RPC_REGISTER("bdev_nvme_apply_firmware", rpc_bdev_nvme_apply_firmware, SPDK_RPC_RUNTIME)
    1164             : 
    1165             : struct rpc_bdev_nvme_transport_stat_ctx {
    1166             :         struct spdk_jsonrpc_request *request;
    1167             :         struct spdk_json_write_ctx *w;
    1168             : };
    1169             : 
    1170             : static void
    1171           0 : rpc_bdev_nvme_rdma_stats(struct spdk_json_write_ctx *w,
    1172             :                          struct spdk_nvme_transport_poll_group_stat *stat)
    1173             : {
    1174             :         struct spdk_nvme_rdma_device_stat *device_stats;
    1175             :         uint32_t i;
    1176             : 
    1177           0 :         spdk_json_write_named_array_begin(w, "devices");
    1178             : 
    1179           0 :         for (i = 0; i < stat->rdma.num_devices; i++) {
    1180           0 :                 device_stats = &stat->rdma.device_stats[i];
    1181           0 :                 spdk_json_write_object_begin(w);
    1182           0 :                 spdk_json_write_named_string(w, "dev_name", device_stats->name);
    1183           0 :                 spdk_json_write_named_uint64(w, "polls", device_stats->polls);
    1184           0 :                 spdk_json_write_named_uint64(w, "idle_polls", device_stats->idle_polls);
    1185           0 :                 spdk_json_write_named_uint64(w, "completions", device_stats->completions);
    1186           0 :                 spdk_json_write_named_uint64(w, "queued_requests", device_stats->queued_requests);
    1187           0 :                 spdk_json_write_named_uint64(w, "total_send_wrs", device_stats->total_send_wrs);
    1188           0 :                 spdk_json_write_named_uint64(w, "send_doorbell_updates", device_stats->send_doorbell_updates);
    1189           0 :                 spdk_json_write_named_uint64(w, "total_recv_wrs", device_stats->total_recv_wrs);
    1190           0 :                 spdk_json_write_named_uint64(w, "recv_doorbell_updates", device_stats->recv_doorbell_updates);
    1191           0 :                 spdk_json_write_object_end(w);
    1192             :         }
    1193           0 :         spdk_json_write_array_end(w);
    1194           0 : }
    1195             : 
    1196             : static void
    1197           0 : rpc_bdev_nvme_pcie_stats(struct spdk_json_write_ctx *w,
    1198             :                          struct spdk_nvme_transport_poll_group_stat *stat)
    1199             : {
    1200           0 :         spdk_json_write_named_uint64(w, "polls", stat->pcie.polls);
    1201           0 :         spdk_json_write_named_uint64(w, "idle_polls", stat->pcie.idle_polls);
    1202           0 :         spdk_json_write_named_uint64(w, "completions", stat->pcie.completions);
    1203           0 :         spdk_json_write_named_uint64(w, "cq_mmio_doorbell_updates", stat->pcie.cq_mmio_doorbell_updates);
    1204           0 :         spdk_json_write_named_uint64(w, "cq_shadow_doorbell_updates",
    1205             :                                      stat->pcie.cq_shadow_doorbell_updates);
    1206           0 :         spdk_json_write_named_uint64(w, "queued_requests", stat->pcie.queued_requests);
    1207           0 :         spdk_json_write_named_uint64(w, "submitted_requests", stat->pcie.submitted_requests);
    1208           0 :         spdk_json_write_named_uint64(w, "sq_mmio_doorbell_updates", stat->pcie.sq_mmio_doorbell_updates);
    1209           0 :         spdk_json_write_named_uint64(w, "sq_shadow_doorbell_updates",
    1210             :                                      stat->pcie.sq_shadow_doorbell_updates);
    1211           0 : }
    1212             : 
    1213             : static void
    1214           0 : rpc_bdev_nvme_tcp_stats(struct spdk_json_write_ctx *w,
    1215             :                         struct spdk_nvme_transport_poll_group_stat *stat)
    1216             : {
    1217           0 :         spdk_json_write_named_uint64(w, "polls", stat->tcp.polls);
    1218           0 :         spdk_json_write_named_uint64(w, "idle_polls", stat->tcp.idle_polls);
    1219           0 :         spdk_json_write_named_uint64(w, "socket_completions", stat->tcp.socket_completions);
    1220           0 :         spdk_json_write_named_uint64(w, "nvme_completions", stat->tcp.nvme_completions);
    1221           0 :         spdk_json_write_named_uint64(w, "queued_requests", stat->tcp.queued_requests);
    1222           0 :         spdk_json_write_named_uint64(w, "submitted_requests", stat->tcp.submitted_requests);
    1223           0 : }
    1224             : 
    1225             : static void
    1226           0 : rpc_bdev_nvme_stats_per_channel(struct spdk_io_channel_iter *i)
    1227             : {
    1228             :         struct rpc_bdev_nvme_transport_stat_ctx *ctx;
    1229             :         struct spdk_io_channel *ch;
    1230             :         struct nvme_poll_group *group;
    1231           0 :         struct spdk_nvme_poll_group_stat *stat;
    1232             :         struct spdk_nvme_transport_poll_group_stat *tr_stat;
    1233             :         uint32_t j;
    1234             :         int rc;
    1235             : 
    1236           0 :         ctx = spdk_io_channel_iter_get_ctx(i);
    1237           0 :         ch = spdk_io_channel_iter_get_channel(i);
    1238           0 :         group = spdk_io_channel_get_ctx(ch);
    1239             : 
    1240           0 :         rc = spdk_nvme_poll_group_get_stats(group->group, &stat);
    1241           0 :         if (rc) {
    1242           0 :                 spdk_for_each_channel_continue(i, rc);
    1243           0 :                 return;
    1244             :         }
    1245             : 
    1246           0 :         spdk_json_write_object_begin(ctx->w);
    1247           0 :         spdk_json_write_named_string(ctx->w, "thread", spdk_thread_get_name(spdk_get_thread()));
    1248           0 :         spdk_json_write_named_array_begin(ctx->w, "transports");
    1249             : 
    1250           0 :         for (j = 0; j < stat->num_transports; j++) {
    1251           0 :                 tr_stat = stat->transport_stat[j];
    1252           0 :                 spdk_json_write_object_begin(ctx->w);
    1253           0 :                 spdk_json_write_named_string(ctx->w, "trname", spdk_nvme_transport_id_trtype_str(tr_stat->trtype));
    1254             : 
    1255           0 :                 switch (stat->transport_stat[j]->trtype) {
    1256           0 :                 case SPDK_NVME_TRANSPORT_RDMA:
    1257           0 :                         rpc_bdev_nvme_rdma_stats(ctx->w, tr_stat);
    1258           0 :                         break;
    1259           0 :                 case SPDK_NVME_TRANSPORT_PCIE:
    1260             :                 case SPDK_NVME_TRANSPORT_VFIOUSER:
    1261           0 :                         rpc_bdev_nvme_pcie_stats(ctx->w, tr_stat);
    1262           0 :                         break;
    1263           0 :                 case SPDK_NVME_TRANSPORT_TCP:
    1264           0 :                         rpc_bdev_nvme_tcp_stats(ctx->w, tr_stat);
    1265           0 :                         break;
    1266           0 :                 default:
    1267           0 :                         SPDK_WARNLOG("Can't handle trtype %d %s\n", tr_stat->trtype,
    1268             :                                      spdk_nvme_transport_id_trtype_str(tr_stat->trtype));
    1269             :                 }
    1270           0 :                 spdk_json_write_object_end(ctx->w);
    1271             :         }
    1272             :         /* transports array */
    1273           0 :         spdk_json_write_array_end(ctx->w);
    1274           0 :         spdk_json_write_object_end(ctx->w);
    1275             : 
    1276           0 :         spdk_nvme_poll_group_free_stats(group->group, stat);
    1277           0 :         spdk_for_each_channel_continue(i, 0);
    1278             : }
    1279             : 
    1280             : static void
    1281           0 : rpc_bdev_nvme_stats_done(struct spdk_io_channel_iter *i, int status)
    1282             : {
    1283           0 :         struct rpc_bdev_nvme_transport_stat_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
    1284             : 
    1285           0 :         spdk_json_write_array_end(ctx->w);
    1286           0 :         spdk_json_write_object_end(ctx->w);
    1287           0 :         spdk_jsonrpc_end_result(ctx->request, ctx->w);
    1288           0 :         free(ctx);
    1289           0 : }
    1290             : 
    1291             : static void
    1292           0 : rpc_bdev_nvme_get_transport_statistics(struct spdk_jsonrpc_request *request,
    1293             :                                        const struct spdk_json_val *params)
    1294             : {
    1295             :         struct rpc_bdev_nvme_transport_stat_ctx *ctx;
    1296             : 
    1297           0 :         if (params) {
    1298           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
    1299             :                                                  "'bdev_nvme_get_transport_statistics' requires no arguments");
    1300           0 :                 return;
    1301             :         }
    1302             : 
    1303           0 :         ctx = calloc(1, sizeof(*ctx));
    1304           0 :         if (!ctx) {
    1305           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1306             :                                                  "Memory allocation error");
    1307           0 :                 return;
    1308             :         }
    1309           0 :         ctx->request = request;
    1310           0 :         ctx->w = spdk_jsonrpc_begin_result(ctx->request);
    1311           0 :         spdk_json_write_object_begin(ctx->w);
    1312           0 :         spdk_json_write_named_array_begin(ctx->w, "poll_groups");
    1313             : 
    1314           0 :         spdk_for_each_channel(&g_nvme_bdev_ctrlrs,
    1315             :                               rpc_bdev_nvme_stats_per_channel,
    1316             :                               ctx,
    1317             :                               rpc_bdev_nvme_stats_done);
    1318             : }
    1319           0 : SPDK_RPC_REGISTER("bdev_nvme_get_transport_statistics", rpc_bdev_nvme_get_transport_statistics,
    1320             :                   SPDK_RPC_RUNTIME)
    1321             : 
    1322             : struct rpc_bdev_nvme_controller_op_req {
    1323             :         char *name;
    1324             :         uint16_t cntlid;
    1325             : };
    1326             : 
    1327             : static void
    1328           0 : free_rpc_bdev_nvme_controller_op_req(struct rpc_bdev_nvme_controller_op_req *r)
    1329             : {
    1330           0 :         free(r->name);
    1331           0 : }
    1332             : 
    1333             : static const struct spdk_json_object_decoder rpc_bdev_nvme_controller_op_req_decoders[] = {
    1334             :         {"name", offsetof(struct rpc_bdev_nvme_controller_op_req, name), spdk_json_decode_string},
    1335             :         {"cntlid", offsetof(struct rpc_bdev_nvme_controller_op_req, cntlid), spdk_json_decode_uint16, true},
    1336             : };
    1337             : 
    1338             : static void
    1339           0 : rpc_bdev_nvme_controller_op_cb(void *cb_arg, int rc)
    1340             : {
    1341           0 :         struct spdk_jsonrpc_request *request = cb_arg;
    1342             : 
    1343           0 :         if (rc == 0) {
    1344           0 :                 spdk_jsonrpc_send_bool_response(request, true);
    1345             :         } else {
    1346           0 :                 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
    1347             :         }
    1348           0 : }
    1349             : 
    1350             : static void
    1351           0 : rpc_bdev_nvme_controller_op(struct spdk_jsonrpc_request *request,
    1352             :                             const struct spdk_json_val *params,
    1353             :                             enum nvme_ctrlr_op op)
    1354             : {
    1355           0 :         struct rpc_bdev_nvme_controller_op_req req = {NULL};
    1356             :         struct nvme_bdev_ctrlr *nbdev_ctrlr;
    1357             :         struct nvme_ctrlr *nvme_ctrlr;
    1358             : 
    1359           0 :         if (spdk_json_decode_object(params, rpc_bdev_nvme_controller_op_req_decoders,
    1360             :                                     SPDK_COUNTOF(rpc_bdev_nvme_controller_op_req_decoders),
    1361             :                                     &req)) {
    1362           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
    1363           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, spdk_strerror(EINVAL));
    1364           0 :                 goto exit;
    1365             :         }
    1366             : 
    1367           0 :         nbdev_ctrlr = nvme_bdev_ctrlr_get_by_name(req.name);
    1368           0 :         if (nbdev_ctrlr == NULL) {
    1369           0 :                 SPDK_ERRLOG("Failed at NVMe bdev controller lookup\n");
    1370           0 :                 spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV));
    1371           0 :                 goto exit;
    1372             :         }
    1373             : 
    1374           0 :         if (req.cntlid == 0) {
    1375           0 :                 nvme_bdev_ctrlr_op_rpc(nbdev_ctrlr, op, rpc_bdev_nvme_controller_op_cb, request);
    1376             :         } else {
    1377           0 :                 nvme_ctrlr = nvme_bdev_ctrlr_get_ctrlr_by_id(nbdev_ctrlr, req.cntlid);
    1378           0 :                 if (nvme_ctrlr == NULL) {
    1379           0 :                         SPDK_ERRLOG("Failed at NVMe controller lookup\n");
    1380           0 :                         spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV));
    1381           0 :                         goto exit;
    1382             :                 }
    1383           0 :                 nvme_ctrlr_op_rpc(nvme_ctrlr, op, rpc_bdev_nvme_controller_op_cb, request);
    1384             :         }
    1385             : 
    1386           0 : exit:
    1387           0 :         free_rpc_bdev_nvme_controller_op_req(&req);
    1388           0 : }
    1389             : 
    1390             : static void
    1391           0 : rpc_bdev_nvme_reset_controller(struct spdk_jsonrpc_request *request,
    1392             :                                const struct spdk_json_val *params)
    1393             : {
    1394           0 :         rpc_bdev_nvme_controller_op(request, params, NVME_CTRLR_OP_RESET);
    1395           0 : }
    1396           0 : SPDK_RPC_REGISTER("bdev_nvme_reset_controller", rpc_bdev_nvme_reset_controller, SPDK_RPC_RUNTIME)
    1397             : 
    1398             : static void
    1399           0 : rpc_bdev_nvme_enable_controller(struct spdk_jsonrpc_request *request,
    1400             :                                 const struct spdk_json_val *params)
    1401             : {
    1402           0 :         rpc_bdev_nvme_controller_op(request, params, NVME_CTRLR_OP_ENABLE);
    1403           0 : }
    1404           0 : SPDK_RPC_REGISTER("bdev_nvme_enable_controller", rpc_bdev_nvme_enable_controller, SPDK_RPC_RUNTIME)
    1405             : 
    1406             : static void
    1407           0 : rpc_bdev_nvme_disable_controller(struct spdk_jsonrpc_request *request,
    1408             :                                  const struct spdk_json_val *params)
    1409             : {
    1410           0 :         rpc_bdev_nvme_controller_op(request, params, NVME_CTRLR_OP_DISABLE);
    1411           0 : }
    1412           0 : SPDK_RPC_REGISTER("bdev_nvme_disable_controller", rpc_bdev_nvme_disable_controller,
    1413             :                   SPDK_RPC_RUNTIME)
    1414             : 
    1415             : struct rpc_get_controller_health_info {
    1416             :         char *name;
    1417             : };
    1418             : 
    1419             : struct spdk_nvme_health_info_context {
    1420             :         struct spdk_jsonrpc_request *request;
    1421             :         struct spdk_nvme_ctrlr *ctrlr;
    1422             :         struct spdk_nvme_health_information_page health_page;
    1423             : };
    1424             : 
    1425             : static void
    1426           0 : free_rpc_get_controller_health_info(struct rpc_get_controller_health_info *r)
    1427             : {
    1428           0 :         free(r->name);
    1429           0 : }
    1430             : 
    1431             : static const struct spdk_json_object_decoder rpc_get_controller_health_info_decoders[] = {
    1432             :         {"name", offsetof(struct rpc_get_controller_health_info, name), spdk_json_decode_string, true},
    1433             : };
    1434             : 
    1435             : static void
    1436           0 : nvme_health_info_cleanup(struct spdk_nvme_health_info_context *context, bool response)
    1437             : {
    1438           0 :         if (response == true) {
    1439           0 :                 spdk_jsonrpc_send_error_response(context->request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1440             :                                                  "Internal error.");
    1441             :         }
    1442             : 
    1443           0 :         free(context);
    1444           0 : }
    1445             : 
    1446             : static void
    1447           0 : get_health_log_page_completion(void *cb_arg, const struct spdk_nvme_cpl *cpl)
    1448             : {
    1449             :         int i;
    1450           0 :         char buf[128];
    1451           0 :         struct spdk_nvme_health_info_context *context = cb_arg;
    1452           0 :         struct spdk_jsonrpc_request *request = context->request;
    1453             :         struct spdk_json_write_ctx *w;
    1454           0 :         struct spdk_nvme_ctrlr *ctrlr = context->ctrlr;
    1455           0 :         const struct spdk_nvme_transport_id *trid = NULL;
    1456           0 :         const struct spdk_nvme_ctrlr_data *cdata = NULL;
    1457           0 :         struct spdk_nvme_health_information_page *health_page = NULL;
    1458             : 
    1459           0 :         if (spdk_nvme_cpl_is_error(cpl)) {
    1460           0 :                 nvme_health_info_cleanup(context, true);
    1461           0 :                 SPDK_ERRLOG("get log page failed\n");
    1462           0 :                 return;
    1463             :         }
    1464             : 
    1465           0 :         if (ctrlr == NULL) {
    1466           0 :                 nvme_health_info_cleanup(context, true);
    1467           0 :                 SPDK_ERRLOG("ctrlr is NULL\n");
    1468           0 :                 return;
    1469             :         } else {
    1470           0 :                 trid = spdk_nvme_ctrlr_get_transport_id(ctrlr);
    1471           0 :                 cdata = spdk_nvme_ctrlr_get_data(ctrlr);
    1472           0 :                 health_page = &(context->health_page);
    1473             :         }
    1474             : 
    1475           0 :         w = spdk_jsonrpc_begin_result(request);
    1476             : 
    1477           0 :         spdk_json_write_object_begin(w);
    1478           0 :         snprintf(buf, sizeof(cdata->mn) + 1, "%s", cdata->mn);
    1479           0 :         spdk_str_trim(buf);
    1480           0 :         spdk_json_write_named_string(w, "model_number", buf);
    1481           0 :         snprintf(buf, sizeof(cdata->sn) + 1, "%s", cdata->sn);
    1482           0 :         spdk_str_trim(buf);
    1483           0 :         spdk_json_write_named_string(w, "serial_number", buf);
    1484           0 :         snprintf(buf, sizeof(cdata->fr) + 1, "%s", cdata->fr);
    1485           0 :         spdk_str_trim(buf);
    1486           0 :         spdk_json_write_named_string(w, "firmware_revision", buf);
    1487           0 :         spdk_json_write_named_string(w, "traddr", trid->traddr);
    1488           0 :         spdk_json_write_named_uint64(w, "critical_warning", health_page->critical_warning.raw);
    1489           0 :         spdk_json_write_named_uint64(w, "temperature_celsius", health_page->temperature - 273);
    1490           0 :         spdk_json_write_named_uint64(w, "available_spare_percentage", health_page->available_spare);
    1491           0 :         spdk_json_write_named_uint64(w, "available_spare_threshold_percentage",
    1492           0 :                                      health_page->available_spare_threshold);
    1493           0 :         spdk_json_write_named_uint64(w, "percentage_used", health_page->percentage_used);
    1494           0 :         spdk_json_write_named_uint128(w, "data_units_read",
    1495             :                                       health_page->data_units_read[0], health_page->data_units_read[1]);
    1496           0 :         spdk_json_write_named_uint128(w, "data_units_written",
    1497             :                                       health_page->data_units_written[0], health_page->data_units_written[1]);
    1498           0 :         spdk_json_write_named_uint128(w, "host_read_commands",
    1499             :                                       health_page->host_read_commands[0], health_page->host_read_commands[1]);
    1500           0 :         spdk_json_write_named_uint128(w, "host_write_commands",
    1501             :                                       health_page->host_write_commands[0], health_page->host_write_commands[1]);
    1502           0 :         spdk_json_write_named_uint128(w, "controller_busy_time",
    1503             :                                       health_page->controller_busy_time[0], health_page->controller_busy_time[1]);
    1504           0 :         spdk_json_write_named_uint128(w, "power_cycles",
    1505             :                                       health_page->power_cycles[0], health_page->power_cycles[1]);
    1506           0 :         spdk_json_write_named_uint128(w, "power_on_hours",
    1507             :                                       health_page->power_on_hours[0], health_page->power_on_hours[1]);
    1508           0 :         spdk_json_write_named_uint128(w, "unsafe_shutdowns",
    1509             :                                       health_page->unsafe_shutdowns[0], health_page->unsafe_shutdowns[1]);
    1510           0 :         spdk_json_write_named_uint128(w, "media_errors",
    1511             :                                       health_page->media_errors[0], health_page->media_errors[1]);
    1512           0 :         spdk_json_write_named_uint128(w, "num_err_log_entries",
    1513             :                                       health_page->num_error_info_log_entries[0], health_page->num_error_info_log_entries[1]);
    1514           0 :         spdk_json_write_named_uint64(w, "warning_temperature_time_minutes", health_page->warning_temp_time);
    1515           0 :         spdk_json_write_named_uint64(w, "critical_composite_temperature_time_minutes",
    1516           0 :                                      health_page->critical_temp_time);
    1517           0 :         for (i = 0; i < 8; i++) {
    1518           0 :                 if (health_page->temp_sensor[i] != 0) {
    1519           0 :                         spdk_json_write_named_uint64(w, "temperature_sensor_celsius", health_page->temp_sensor[i] - 273);
    1520             :                 }
    1521             :         }
    1522           0 :         spdk_json_write_object_end(w);
    1523             : 
    1524           0 :         spdk_jsonrpc_end_result(request, w);
    1525           0 :         nvme_health_info_cleanup(context, false);
    1526             : }
    1527             : 
    1528             : static void
    1529           0 : get_health_log_page(struct spdk_nvme_health_info_context *context)
    1530             : {
    1531           0 :         struct spdk_nvme_ctrlr *ctrlr = context->ctrlr;
    1532             : 
    1533           0 :         if (spdk_nvme_ctrlr_cmd_get_log_page(ctrlr, SPDK_NVME_LOG_HEALTH_INFORMATION,
    1534             :                                              SPDK_NVME_GLOBAL_NS_TAG,
    1535           0 :                                              &(context->health_page), sizeof(context->health_page), 0,
    1536             :                                              get_health_log_page_completion, context)) {
    1537           0 :                 nvme_health_info_cleanup(context, true);
    1538           0 :                 SPDK_ERRLOG("spdk_nvme_ctrlr_cmd_get_log_page() failed\n");
    1539             :         }
    1540           0 : }
    1541             : 
    1542             : static void
    1543           0 : get_temperature_threshold_feature_completion(void *cb_arg, const struct spdk_nvme_cpl *cpl)
    1544             : {
    1545           0 :         struct spdk_nvme_health_info_context *context = cb_arg;
    1546             : 
    1547           0 :         if (spdk_nvme_cpl_is_error(cpl)) {
    1548           0 :                 nvme_health_info_cleanup(context, true);
    1549           0 :                 SPDK_ERRLOG("feature SPDK_NVME_FEAT_TEMPERATURE_THRESHOLD failed in completion\n");
    1550             :         } else {
    1551           0 :                 get_health_log_page(context);
    1552             :         }
    1553           0 : }
    1554             : 
    1555             : static int
    1556           0 : get_temperature_threshold_feature(struct spdk_nvme_health_info_context *context)
    1557             : {
    1558           0 :         struct spdk_nvme_cmd cmd = {};
    1559             : 
    1560           0 :         cmd.opc = SPDK_NVME_OPC_GET_FEATURES;
    1561           0 :         cmd.cdw10 = SPDK_NVME_FEAT_TEMPERATURE_THRESHOLD;
    1562             : 
    1563           0 :         return spdk_nvme_ctrlr_cmd_admin_raw(context->ctrlr, &cmd, NULL, 0,
    1564             :                                              get_temperature_threshold_feature_completion, context);
    1565             : }
    1566             : 
    1567             : static void
    1568           0 : get_controller_health_info(struct spdk_jsonrpc_request *request, struct spdk_nvme_ctrlr *ctrlr)
    1569             : {
    1570             :         struct spdk_nvme_health_info_context *context;
    1571             : 
    1572           0 :         context = calloc(1, sizeof(struct spdk_nvme_health_info_context));
    1573           0 :         if (!context) {
    1574           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1575             :                                                  "Memory allocation error.");
    1576           0 :                 return;
    1577             :         }
    1578             : 
    1579           0 :         context->request = request;
    1580           0 :         context->ctrlr = ctrlr;
    1581             : 
    1582           0 :         if (get_temperature_threshold_feature(context)) {
    1583           0 :                 nvme_health_info_cleanup(context, true);
    1584           0 :                 SPDK_ERRLOG("feature SPDK_NVME_FEAT_TEMPERATURE_THRESHOLD failed to submit\n");
    1585             :         }
    1586             : 
    1587           0 :         return;
    1588             : }
    1589             : 
    1590             : static void
    1591           0 : rpc_bdev_nvme_get_controller_health_info(struct spdk_jsonrpc_request *request,
    1592             :                 const struct spdk_json_val *params)
    1593             : {
    1594           0 :         struct rpc_get_controller_health_info req = {};
    1595           0 :         struct nvme_ctrlr *nvme_ctrlr = NULL;
    1596             : 
    1597           0 :         if (!params) {
    1598           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1599             :                                                  "Missing device name");
    1600             : 
    1601           0 :                 return;
    1602             :         }
    1603           0 :         if (spdk_json_decode_object(params, rpc_get_controller_health_info_decoders,
    1604             :                                     SPDK_COUNTOF(rpc_get_controller_health_info_decoders), &req)) {
    1605           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
    1606           0 :                 free_rpc_get_controller_health_info(&req);
    1607           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1608             :                                                  "Invalid parameters");
    1609             : 
    1610           0 :                 return;
    1611             :         }
    1612             : 
    1613           0 :         nvme_ctrlr = nvme_ctrlr_get_by_name(req.name);
    1614             : 
    1615           0 :         if (!nvme_ctrlr) {
    1616           0 :                 SPDK_ERRLOG("nvme ctrlr name '%s' does not exist\n", req.name);
    1617           0 :                 free_rpc_get_controller_health_info(&req);
    1618           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1619             :                                                  "Device not found");
    1620           0 :                 return;
    1621             :         }
    1622             : 
    1623           0 :         get_controller_health_info(request, nvme_ctrlr->ctrlr);
    1624           0 :         free_rpc_get_controller_health_info(&req);
    1625             : 
    1626           0 :         return;
    1627             : }
    1628           0 : SPDK_RPC_REGISTER("bdev_nvme_get_controller_health_info",
    1629             :                   rpc_bdev_nvme_get_controller_health_info, SPDK_RPC_RUNTIME)
    1630             : 
    1631             : struct rpc_bdev_nvme_start_discovery {
    1632             :         char *name;
    1633             :         char *trtype;
    1634             :         char *adrfam;
    1635             :         char *traddr;
    1636             :         char *trsvcid;
    1637             :         char *hostnqn;
    1638             :         bool wait_for_attach;
    1639             :         uint64_t attach_timeout_ms;
    1640             :         struct spdk_nvme_ctrlr_opts opts;
    1641             :         struct nvme_ctrlr_opts bdev_opts;
    1642             : };
    1643             : 
    1644             : static void
    1645           0 : free_rpc_bdev_nvme_start_discovery(struct rpc_bdev_nvme_start_discovery *req)
    1646             : {
    1647           0 :         free(req->name);
    1648           0 :         free(req->trtype);
    1649           0 :         free(req->adrfam);
    1650           0 :         free(req->traddr);
    1651           0 :         free(req->trsvcid);
    1652           0 :         free(req->hostnqn);
    1653           0 : }
    1654             : 
    1655             : static const struct spdk_json_object_decoder rpc_bdev_nvme_start_discovery_decoders[] = {
    1656             :         {"name", offsetof(struct rpc_bdev_nvme_start_discovery, name), spdk_json_decode_string},
    1657             :         {"trtype", offsetof(struct rpc_bdev_nvme_start_discovery, trtype), spdk_json_decode_string},
    1658             :         {"traddr", offsetof(struct rpc_bdev_nvme_start_discovery, traddr), spdk_json_decode_string},
    1659             :         {"adrfam", offsetof(struct rpc_bdev_nvme_start_discovery, adrfam), spdk_json_decode_string, true},
    1660             :         {"trsvcid", offsetof(struct rpc_bdev_nvme_start_discovery, trsvcid), spdk_json_decode_string, true},
    1661             :         {"hostnqn", offsetof(struct rpc_bdev_nvme_start_discovery, hostnqn), spdk_json_decode_string, true},
    1662             :         {"wait_for_attach", offsetof(struct rpc_bdev_nvme_start_discovery, wait_for_attach), spdk_json_decode_bool, true},
    1663             :         {"attach_timeout_ms", offsetof(struct rpc_bdev_nvme_start_discovery, attach_timeout_ms), spdk_json_decode_uint64, true},
    1664             :         {"ctrlr_loss_timeout_sec", offsetof(struct rpc_bdev_nvme_start_discovery, bdev_opts.ctrlr_loss_timeout_sec), spdk_json_decode_int32, true},
    1665             :         {"reconnect_delay_sec", offsetof(struct rpc_bdev_nvme_start_discovery, bdev_opts.reconnect_delay_sec), spdk_json_decode_uint32, true},
    1666             :         {"fast_io_fail_timeout_sec", offsetof(struct rpc_bdev_nvme_start_discovery, bdev_opts.fast_io_fail_timeout_sec), spdk_json_decode_uint32, true},
    1667             : };
    1668             : 
    1669             : struct rpc_bdev_nvme_start_discovery_ctx {
    1670             :         struct rpc_bdev_nvme_start_discovery req;
    1671             :         struct spdk_jsonrpc_request *request;
    1672             : };
    1673             : 
    1674             : static void
    1675           0 : rpc_bdev_nvme_start_discovery_done(void *ctx, int status)
    1676             : {
    1677           0 :         struct spdk_jsonrpc_request *request = ctx;
    1678             : 
    1679           0 :         if (status != 0) {
    1680           0 :                 spdk_jsonrpc_send_error_response(request, status, spdk_strerror(-status));
    1681             :         } else {
    1682           0 :                 spdk_jsonrpc_send_bool_response(request, true);
    1683             :         }
    1684           0 : }
    1685             : 
    1686             : static void
    1687           0 : rpc_bdev_nvme_start_discovery(struct spdk_jsonrpc_request *request,
    1688             :                               const struct spdk_json_val *params)
    1689             : {
    1690             :         struct rpc_bdev_nvme_start_discovery_ctx *ctx;
    1691           0 :         struct spdk_nvme_transport_id trid = {};
    1692             :         size_t len, maxlen;
    1693             :         int rc;
    1694             :         spdk_bdev_nvme_start_discovery_fn cb_fn;
    1695             :         void *cb_ctx;
    1696             : 
    1697           0 :         ctx = calloc(1, sizeof(*ctx));
    1698           0 :         if (!ctx) {
    1699           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
    1700           0 :                 return;
    1701             :         }
    1702             : 
    1703           0 :         spdk_nvme_ctrlr_get_default_ctrlr_opts(&ctx->req.opts, sizeof(ctx->req.opts));
    1704             : 
    1705           0 :         if (spdk_json_decode_object(params, rpc_bdev_nvme_start_discovery_decoders,
    1706             :                                     SPDK_COUNTOF(rpc_bdev_nvme_start_discovery_decoders),
    1707           0 :                                     &ctx->req)) {
    1708           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
    1709           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1710             :                                                  "spdk_json_decode_object failed");
    1711           0 :                 goto cleanup;
    1712             :         }
    1713             : 
    1714             :         /* Parse trstring */
    1715           0 :         rc = spdk_nvme_transport_id_populate_trstring(&trid, ctx->req.trtype);
    1716           0 :         if (rc < 0) {
    1717           0 :                 SPDK_ERRLOG("Failed to parse trtype: %s\n", ctx->req.trtype);
    1718           0 :                 spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "Failed to parse trtype: %s",
    1719             :                                                      ctx->req.trtype);
    1720           0 :                 goto cleanup;
    1721             :         }
    1722             : 
    1723             :         /* Parse trtype */
    1724           0 :         rc = spdk_nvme_transport_id_parse_trtype(&trid.trtype, ctx->req.trtype);
    1725           0 :         assert(rc == 0);
    1726             : 
    1727             :         /* Parse traddr */
    1728           0 :         maxlen = sizeof(trid.traddr);
    1729           0 :         len = strnlen(ctx->req.traddr, maxlen);
    1730           0 :         if (len == maxlen) {
    1731           0 :                 spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "traddr too long: %s",
    1732             :                                                      ctx->req.traddr);
    1733           0 :                 goto cleanup;
    1734             :         }
    1735           0 :         memcpy(trid.traddr, ctx->req.traddr, len + 1);
    1736             : 
    1737             :         /* Parse adrfam */
    1738           0 :         if (ctx->req.adrfam) {
    1739           0 :                 rc = spdk_nvme_transport_id_parse_adrfam(&trid.adrfam, ctx->req.adrfam);
    1740           0 :                 if (rc < 0) {
    1741           0 :                         SPDK_ERRLOG("Failed to parse adrfam: %s\n", ctx->req.adrfam);
    1742           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "Failed to parse adrfam: %s",
    1743             :                                                              ctx->req.adrfam);
    1744           0 :                         goto cleanup;
    1745             :                 }
    1746             :         }
    1747             : 
    1748             :         /* Parse trsvcid */
    1749           0 :         if (ctx->req.trsvcid) {
    1750           0 :                 maxlen = sizeof(trid.trsvcid);
    1751           0 :                 len = strnlen(ctx->req.trsvcid, maxlen);
    1752           0 :                 if (len == maxlen) {
    1753           0 :                         spdk_jsonrpc_send_error_response_fmt(request, -EINVAL, "trsvcid too long: %s",
    1754             :                                                              ctx->req.trsvcid);
    1755           0 :                         goto cleanup;
    1756             :                 }
    1757           0 :                 memcpy(trid.trsvcid, ctx->req.trsvcid, len + 1);
    1758             :         }
    1759             : 
    1760           0 :         if (ctx->req.hostnqn) {
    1761           0 :                 snprintf(ctx->req.opts.hostnqn, sizeof(ctx->req.opts.hostnqn), "%s",
    1762             :                          ctx->req.hostnqn);
    1763             :         }
    1764             : 
    1765           0 :         if (ctx->req.attach_timeout_ms != 0) {
    1766           0 :                 ctx->req.wait_for_attach = true;
    1767             :         }
    1768             : 
    1769           0 :         ctx->request = request;
    1770           0 :         cb_fn = ctx->req.wait_for_attach ? rpc_bdev_nvme_start_discovery_done : NULL;
    1771           0 :         cb_ctx = ctx->req.wait_for_attach ? request : NULL;
    1772           0 :         rc = bdev_nvme_start_discovery(&trid, ctx->req.name, &ctx->req.opts, &ctx->req.bdev_opts,
    1773             :                                        ctx->req.attach_timeout_ms, false, cb_fn, cb_ctx);
    1774           0 :         if (rc) {
    1775           0 :                 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
    1776           0 :         } else if (!ctx->req.wait_for_attach) {
    1777           0 :                 rpc_bdev_nvme_start_discovery_done(request, 0);
    1778             :         }
    1779             : 
    1780           0 : cleanup:
    1781           0 :         free_rpc_bdev_nvme_start_discovery(&ctx->req);
    1782           0 :         free(ctx);
    1783             : }
    1784           0 : SPDK_RPC_REGISTER("bdev_nvme_start_discovery", rpc_bdev_nvme_start_discovery,
    1785             :                   SPDK_RPC_RUNTIME)
    1786             : 
    1787             : struct rpc_bdev_nvme_stop_discovery {
    1788             :         char *name;
    1789             : };
    1790             : 
    1791             : static const struct spdk_json_object_decoder rpc_bdev_nvme_stop_discovery_decoders[] = {
    1792             :         {"name", offsetof(struct rpc_bdev_nvme_stop_discovery, name), spdk_json_decode_string},
    1793             : };
    1794             : 
    1795             : struct rpc_bdev_nvme_stop_discovery_ctx {
    1796             :         struct rpc_bdev_nvme_stop_discovery req;
    1797             :         struct spdk_jsonrpc_request *request;
    1798             : };
    1799             : 
    1800             : static void
    1801           0 : rpc_bdev_nvme_stop_discovery_done(void *cb_ctx)
    1802             : {
    1803           0 :         struct rpc_bdev_nvme_stop_discovery_ctx *ctx = cb_ctx;
    1804             : 
    1805           0 :         spdk_jsonrpc_send_bool_response(ctx->request, true);
    1806           0 :         free(ctx->req.name);
    1807           0 :         free(ctx);
    1808           0 : }
    1809             : 
    1810             : static void
    1811           0 : rpc_bdev_nvme_stop_discovery(struct spdk_jsonrpc_request *request,
    1812             :                              const struct spdk_json_val *params)
    1813             : {
    1814             :         struct rpc_bdev_nvme_stop_discovery_ctx *ctx;
    1815             :         int rc;
    1816             : 
    1817           0 :         ctx = calloc(1, sizeof(*ctx));
    1818           0 :         if (!ctx) {
    1819           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
    1820           0 :                 return;
    1821             :         }
    1822             : 
    1823           0 :         if (spdk_json_decode_object(params, rpc_bdev_nvme_stop_discovery_decoders,
    1824             :                                     SPDK_COUNTOF(rpc_bdev_nvme_stop_discovery_decoders),
    1825           0 :                                     &ctx->req)) {
    1826           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
    1827           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    1828             :                                                  "spdk_json_decode_object failed");
    1829           0 :                 goto cleanup;
    1830             :         }
    1831             : 
    1832           0 :         ctx->request = request;
    1833           0 :         rc = bdev_nvme_stop_discovery(ctx->req.name, rpc_bdev_nvme_stop_discovery_done, ctx);
    1834           0 :         if (rc) {
    1835           0 :                 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
    1836           0 :                 goto cleanup;
    1837             :         }
    1838             : 
    1839           0 :         return;
    1840             : 
    1841           0 : cleanup:
    1842           0 :         free(ctx->req.name);
    1843           0 :         free(ctx);
    1844             : }
    1845           0 : SPDK_RPC_REGISTER("bdev_nvme_stop_discovery", rpc_bdev_nvme_stop_discovery,
    1846             :                   SPDK_RPC_RUNTIME)
    1847             : 
    1848             : static void
    1849           0 : rpc_bdev_nvme_get_discovery_info(struct spdk_jsonrpc_request *request,
    1850             :                                  const struct spdk_json_val *params)
    1851             : {
    1852             :         struct spdk_json_write_ctx *w;
    1853             : 
    1854           0 :         w = spdk_jsonrpc_begin_result(request);
    1855           0 :         bdev_nvme_get_discovery_info(w);
    1856           0 :         spdk_jsonrpc_end_result(request, w);
    1857           0 : }
    1858           0 : SPDK_RPC_REGISTER("bdev_nvme_get_discovery_info", rpc_bdev_nvme_get_discovery_info,
    1859             :                   SPDK_RPC_RUNTIME)
    1860             : 
    1861             : enum error_injection_cmd_type {
    1862             :         NVME_ADMIN_CMD = 1,
    1863             :         NVME_IO_CMD,
    1864             : };
    1865             : 
    1866             : struct rpc_add_error_injection {
    1867             :         char *name;
    1868             :         enum error_injection_cmd_type cmd_type;
    1869             :         uint8_t opc;
    1870             :         bool do_not_submit;
    1871             :         uint64_t timeout_in_us;
    1872             :         uint32_t err_count;
    1873             :         uint8_t sct;
    1874             :         uint8_t sc;
    1875             : };
    1876             : 
    1877             : static void
    1878           0 : free_rpc_add_error_injection(struct rpc_add_error_injection *req)
    1879             : {
    1880           0 :         free(req->name);
    1881           0 : }
    1882             : 
    1883             : static int
    1884           0 : rpc_error_injection_decode_cmd_type(const struct spdk_json_val *val, void *out)
    1885             : {
    1886           0 :         int *cmd_type = out;
    1887             : 
    1888           0 :         if (spdk_json_strequal(val, "admin")) {
    1889           0 :                 *cmd_type = NVME_ADMIN_CMD;
    1890           0 :         } else if (spdk_json_strequal(val, "io")) {
    1891           0 :                 *cmd_type = NVME_IO_CMD;
    1892             :         } else {
    1893           0 :                 SPDK_ERRLOG("Invalid parameter value: cmd_type\n");
    1894           0 :                 return -EINVAL;
    1895             :         }
    1896             : 
    1897           0 :         return 0;
    1898             : }
    1899             : 
    1900             : static const struct spdk_json_object_decoder rpc_add_error_injection_decoders[] = {
    1901             :         { "name", offsetof(struct rpc_add_error_injection, name), spdk_json_decode_string },
    1902             :         { "cmd_type", offsetof(struct rpc_add_error_injection, cmd_type), rpc_error_injection_decode_cmd_type },
    1903             :         { "opc", offsetof(struct rpc_add_error_injection, opc), spdk_json_decode_uint8 },
    1904             :         { "do_not_submit", offsetof(struct rpc_add_error_injection, do_not_submit), spdk_json_decode_bool, true },
    1905             :         { "timeout_in_us", offsetof(struct rpc_add_error_injection, timeout_in_us), spdk_json_decode_uint64, true },
    1906             :         { "err_count", offsetof(struct rpc_add_error_injection, err_count), spdk_json_decode_uint32, true },
    1907             :         { "sct", offsetof(struct rpc_add_error_injection, sct), spdk_json_decode_uint8, true},
    1908             :         { "sc", offsetof(struct rpc_add_error_injection, sc), spdk_json_decode_uint8, true},
    1909             : };
    1910             : 
    1911             : struct rpc_add_error_injection_ctx {
    1912             :         struct spdk_jsonrpc_request *request;
    1913             :         struct rpc_add_error_injection rpc;
    1914             : };
    1915             : 
    1916             : static void
    1917           0 : rpc_add_error_injection_done(struct spdk_io_channel_iter *i, int status)
    1918             : {
    1919           0 :         struct rpc_add_error_injection_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
    1920             : 
    1921           0 :         if (status) {
    1922           0 :                 spdk_jsonrpc_send_error_response(ctx->request, status,
    1923             :                                                  "Failed to add the error injection.");
    1924             :         } else {
    1925           0 :                 spdk_jsonrpc_send_bool_response(ctx->request, true);
    1926             :         }
    1927             : 
    1928           0 :         free_rpc_add_error_injection(&ctx->rpc);
    1929           0 :         free(ctx);
    1930           0 : }
    1931             : 
    1932             : static void
    1933           0 : rpc_add_error_injection_per_channel(struct spdk_io_channel_iter *i)
    1934             : {
    1935           0 :         struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i);
    1936           0 :         struct rpc_add_error_injection_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
    1937           0 :         struct nvme_ctrlr_channel *ctrlr_ch = spdk_io_channel_get_ctx(ch);
    1938           0 :         struct spdk_nvme_qpair *qpair = ctrlr_ch->qpair->qpair;
    1939           0 :         struct spdk_nvme_ctrlr *ctrlr = ctrlr_ch->qpair->ctrlr->ctrlr;
    1940           0 :         int rc = 0;
    1941             : 
    1942           0 :         if (qpair != NULL) {
    1943           0 :                 rc = spdk_nvme_qpair_add_cmd_error_injection(ctrlr, qpair, ctx->rpc.opc,
    1944           0 :                                 ctx->rpc.do_not_submit, ctx->rpc.timeout_in_us, ctx->rpc.err_count,
    1945           0 :                                 ctx->rpc.sct, ctx->rpc.sc);
    1946             :         }
    1947             : 
    1948           0 :         spdk_for_each_channel_continue(i, rc);
    1949           0 : }
    1950             : 
    1951             : static void
    1952           0 : rpc_bdev_nvme_add_error_injection(
    1953             :         struct spdk_jsonrpc_request *request,
    1954             :         const struct spdk_json_val *params)
    1955             : {
    1956             :         struct rpc_add_error_injection_ctx *ctx;
    1957             :         struct nvme_ctrlr *nvme_ctrlr;
    1958             :         int rc;
    1959             : 
    1960           0 :         ctx = calloc(1, sizeof(*ctx));
    1961           0 :         if (!ctx) {
    1962           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
    1963           0 :                 return;
    1964             :         }
    1965           0 :         ctx->rpc.err_count = 1;
    1966           0 :         ctx->request = request;
    1967             : 
    1968           0 :         if (spdk_json_decode_object(params,
    1969             :                                     rpc_add_error_injection_decoders,
    1970             :                                     SPDK_COUNTOF(rpc_add_error_injection_decoders),
    1971           0 :                                     &ctx->rpc)) {
    1972           0 :                 spdk_jsonrpc_send_error_response(request, -EINVAL,
    1973             :                                                  "Failed to parse the request");
    1974           0 :                 goto cleanup;
    1975             :         }
    1976             : 
    1977           0 :         nvme_ctrlr = nvme_ctrlr_get_by_name(ctx->rpc.name);
    1978           0 :         if (nvme_ctrlr == NULL) {
    1979           0 :                 SPDK_ERRLOG("No controller with specified name was found.\n");
    1980           0 :                 spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV));
    1981           0 :                 goto cleanup;
    1982             :         }
    1983             : 
    1984           0 :         if (ctx->rpc.cmd_type == NVME_IO_CMD) {
    1985           0 :                 spdk_for_each_channel(nvme_ctrlr,
    1986             :                                       rpc_add_error_injection_per_channel,
    1987             :                                       ctx,
    1988             :                                       rpc_add_error_injection_done);
    1989             : 
    1990           0 :                 return;
    1991             :         } else {
    1992           0 :                 rc = spdk_nvme_qpair_add_cmd_error_injection(nvme_ctrlr->ctrlr, NULL, ctx->rpc.opc,
    1993           0 :                                 ctx->rpc.do_not_submit, ctx->rpc.timeout_in_us, ctx->rpc.err_count,
    1994           0 :                                 ctx->rpc.sct, ctx->rpc.sc);
    1995           0 :                 if (rc) {
    1996           0 :                         spdk_jsonrpc_send_error_response(request, -rc,
    1997             :                                                          "Failed to add the error injection");
    1998             :                 } else {
    1999           0 :                         spdk_jsonrpc_send_bool_response(ctx->request, true);
    2000             :                 }
    2001             :         }
    2002             : 
    2003           0 : cleanup:
    2004           0 :         free_rpc_add_error_injection(&ctx->rpc);
    2005           0 :         free(ctx);
    2006             : }
    2007           0 : SPDK_RPC_REGISTER("bdev_nvme_add_error_injection", rpc_bdev_nvme_add_error_injection,
    2008             :                   SPDK_RPC_RUNTIME)
    2009             : 
    2010             : struct rpc_remove_error_injection {
    2011             :         char *name;
    2012             :         enum error_injection_cmd_type cmd_type;
    2013             :         uint8_t opc;
    2014             : };
    2015             : 
    2016             : static void
    2017           0 : free_rpc_remove_error_injection(struct rpc_remove_error_injection *req)
    2018             : {
    2019           0 :         free(req->name);
    2020           0 : }
    2021             : 
    2022             : static const struct spdk_json_object_decoder rpc_remove_error_injection_decoders[] = {
    2023             :         { "name", offsetof(struct rpc_remove_error_injection, name), spdk_json_decode_string },
    2024             :         { "cmd_type", offsetof(struct rpc_remove_error_injection, cmd_type), rpc_error_injection_decode_cmd_type },
    2025             :         { "opc", offsetof(struct rpc_remove_error_injection, opc), spdk_json_decode_uint8 },
    2026             : };
    2027             : 
    2028             : struct rpc_remove_error_injection_ctx {
    2029             :         struct spdk_jsonrpc_request *request;
    2030             :         struct rpc_remove_error_injection rpc;
    2031             : };
    2032             : 
    2033             : static void
    2034           0 : rpc_remove_error_injection_done(struct spdk_io_channel_iter *i, int status)
    2035             : {
    2036           0 :         struct rpc_remove_error_injection_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
    2037             : 
    2038           0 :         if (status) {
    2039           0 :                 spdk_jsonrpc_send_error_response(ctx->request, status,
    2040             :                                                  "Failed to remove the error injection.");
    2041             :         } else {
    2042           0 :                 spdk_jsonrpc_send_bool_response(ctx->request, true);
    2043             :         }
    2044             : 
    2045           0 :         free_rpc_remove_error_injection(&ctx->rpc);
    2046           0 :         free(ctx);
    2047           0 : }
    2048             : 
    2049             : static void
    2050           0 : rpc_remove_error_injection_per_channel(struct spdk_io_channel_iter *i)
    2051             : {
    2052           0 :         struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i);
    2053           0 :         struct rpc_remove_error_injection_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
    2054           0 :         struct nvme_ctrlr_channel *ctrlr_ch = spdk_io_channel_get_ctx(ch);
    2055           0 :         struct spdk_nvme_qpair *qpair = ctrlr_ch->qpair->qpair;
    2056           0 :         struct spdk_nvme_ctrlr *ctrlr = ctrlr_ch->qpair->ctrlr->ctrlr;
    2057             : 
    2058           0 :         if (qpair != NULL) {
    2059           0 :                 spdk_nvme_qpair_remove_cmd_error_injection(ctrlr, qpair, ctx->rpc.opc);
    2060             :         }
    2061             : 
    2062           0 :         spdk_for_each_channel_continue(i, 0);
    2063           0 : }
    2064             : 
    2065             : static void
    2066           0 : rpc_bdev_nvme_remove_error_injection(struct spdk_jsonrpc_request *request,
    2067             :                                      const struct spdk_json_val *params)
    2068             : {
    2069             :         struct rpc_remove_error_injection_ctx *ctx;
    2070             :         struct nvme_ctrlr *nvme_ctrlr;
    2071             : 
    2072           0 :         ctx = calloc(1, sizeof(*ctx));
    2073           0 :         if (!ctx) {
    2074           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
    2075           0 :                 return;
    2076             :         }
    2077           0 :         ctx->request = request;
    2078             : 
    2079           0 :         if (spdk_json_decode_object(params,
    2080             :                                     rpc_remove_error_injection_decoders,
    2081             :                                     SPDK_COUNTOF(rpc_remove_error_injection_decoders),
    2082           0 :                                     &ctx->rpc)) {
    2083           0 :                 spdk_jsonrpc_send_error_response(request, -EINVAL,
    2084             :                                                  "Failed to parse the request");
    2085           0 :                 goto cleanup;
    2086             :         }
    2087             : 
    2088           0 :         nvme_ctrlr = nvme_ctrlr_get_by_name(ctx->rpc.name);
    2089           0 :         if (nvme_ctrlr == NULL) {
    2090           0 :                 SPDK_ERRLOG("No controller with specified name was found.\n");
    2091           0 :                 spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV));
    2092           0 :                 goto cleanup;
    2093             :         }
    2094             : 
    2095           0 :         if (ctx->rpc.cmd_type == NVME_IO_CMD) {
    2096           0 :                 spdk_for_each_channel(nvme_ctrlr,
    2097             :                                       rpc_remove_error_injection_per_channel,
    2098             :                                       ctx,
    2099             :                                       rpc_remove_error_injection_done);
    2100           0 :                 return;
    2101             :         } else {
    2102           0 :                 spdk_nvme_qpair_remove_cmd_error_injection(nvme_ctrlr->ctrlr, NULL, ctx->rpc.opc);
    2103           0 :                 spdk_jsonrpc_send_bool_response(ctx->request, true);
    2104             :         }
    2105             : 
    2106           0 : cleanup:
    2107           0 :         free_rpc_remove_error_injection(&ctx->rpc);
    2108           0 :         free(ctx);
    2109             : }
    2110           0 : SPDK_RPC_REGISTER("bdev_nvme_remove_error_injection", rpc_bdev_nvme_remove_error_injection,
    2111             :                   SPDK_RPC_RUNTIME)
    2112             : 
    2113             : struct rpc_get_io_paths {
    2114             :         char *name;
    2115             : };
    2116             : 
    2117             : static void
    2118           0 : free_rpc_get_io_paths(struct rpc_get_io_paths *r)
    2119             : {
    2120           0 :         free(r->name);
    2121           0 : }
    2122             : 
    2123             : static const struct spdk_json_object_decoder rpc_get_io_paths_decoders[] = {
    2124             :         {"name", offsetof(struct rpc_get_io_paths, name), spdk_json_decode_string, true},
    2125             : };
    2126             : 
    2127             : struct rpc_get_io_paths_ctx {
    2128             :         struct rpc_get_io_paths req;
    2129             :         struct spdk_jsonrpc_request *request;
    2130             :         struct spdk_json_write_ctx *w;
    2131             : };
    2132             : 
    2133             : static void
    2134           0 : rpc_bdev_nvme_get_io_paths_done(struct spdk_io_channel_iter *i, int status)
    2135             : {
    2136           0 :         struct rpc_get_io_paths_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
    2137             : 
    2138           0 :         spdk_json_write_array_end(ctx->w);
    2139             : 
    2140           0 :         spdk_json_write_object_end(ctx->w);
    2141             : 
    2142           0 :         spdk_jsonrpc_end_result(ctx->request, ctx->w);
    2143             : 
    2144           0 :         free_rpc_get_io_paths(&ctx->req);
    2145           0 :         free(ctx);
    2146           0 : }
    2147             : 
    2148             : static void
    2149           0 : _rpc_bdev_nvme_get_io_paths(struct spdk_io_channel_iter *i)
    2150             : {
    2151           0 :         struct spdk_io_channel *_ch = spdk_io_channel_iter_get_channel(i);
    2152           0 :         struct nvme_poll_group *group = spdk_io_channel_get_ctx(_ch);
    2153           0 :         struct rpc_get_io_paths_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
    2154             :         struct nvme_qpair *qpair;
    2155             :         struct nvme_io_path *io_path;
    2156             :         struct nvme_bdev *nbdev;
    2157             : 
    2158           0 :         spdk_json_write_object_begin(ctx->w);
    2159             : 
    2160           0 :         spdk_json_write_named_string(ctx->w, "thread", spdk_thread_get_name(spdk_get_thread()));
    2161             : 
    2162           0 :         spdk_json_write_named_array_begin(ctx->w, "io_paths");
    2163             : 
    2164           0 :         TAILQ_FOREACH(qpair, &group->qpair_list, tailq) {
    2165           0 :                 TAILQ_FOREACH(io_path, &qpair->io_path_list, tailq) {
    2166           0 :                         nbdev = io_path->nvme_ns->bdev;
    2167             : 
    2168           0 :                         if (ctx->req.name != NULL &&
    2169           0 :                             strcmp(ctx->req.name, nbdev->disk.name) != 0) {
    2170           0 :                                 continue;
    2171             :                         }
    2172             : 
    2173           0 :                         nvme_io_path_info_json(ctx->w, io_path);
    2174             :                 }
    2175             :         }
    2176             : 
    2177           0 :         spdk_json_write_array_end(ctx->w);
    2178             : 
    2179           0 :         spdk_json_write_object_end(ctx->w);
    2180             : 
    2181           0 :         spdk_for_each_channel_continue(i, 0);
    2182           0 : }
    2183             : 
    2184             : static void
    2185           0 : rpc_bdev_nvme_get_io_paths(struct spdk_jsonrpc_request *request,
    2186             :                            const struct spdk_json_val *params)
    2187             : {
    2188             :         struct rpc_get_io_paths_ctx *ctx;
    2189             : 
    2190           0 :         ctx = calloc(1, sizeof(*ctx));
    2191           0 :         if (ctx == NULL) {
    2192           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
    2193           0 :                 return;
    2194             :         }
    2195             : 
    2196           0 :         if (params != NULL &&
    2197           0 :             spdk_json_decode_object(params, rpc_get_io_paths_decoders,
    2198             :                                     SPDK_COUNTOF(rpc_get_io_paths_decoders),
    2199           0 :                                     &ctx->req)) {
    2200           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
    2201             :                                                  "bdev_nvme_get_io_paths requires no parameters");
    2202             : 
    2203           0 :                 free_rpc_get_io_paths(&ctx->req);
    2204           0 :                 free(ctx);
    2205           0 :                 return;
    2206             :         }
    2207             : 
    2208           0 :         ctx->request = request;
    2209           0 :         ctx->w = spdk_jsonrpc_begin_result(request);
    2210             : 
    2211           0 :         spdk_json_write_object_begin(ctx->w);
    2212             : 
    2213           0 :         spdk_json_write_named_array_begin(ctx->w, "poll_groups");
    2214             : 
    2215           0 :         spdk_for_each_channel(&g_nvme_bdev_ctrlrs,
    2216             :                               _rpc_bdev_nvme_get_io_paths,
    2217             :                               ctx,
    2218             :                               rpc_bdev_nvme_get_io_paths_done);
    2219             : }
    2220           0 : SPDK_RPC_REGISTER("bdev_nvme_get_io_paths", rpc_bdev_nvme_get_io_paths, SPDK_RPC_RUNTIME)
    2221             : 
    2222             : struct rpc_bdev_nvme_set_preferred_path {
    2223             :         char *name;
    2224             :         uint16_t cntlid;
    2225             : };
    2226             : 
    2227             : static void
    2228           0 : free_rpc_bdev_nvme_set_preferred_path(struct rpc_bdev_nvme_set_preferred_path *req)
    2229             : {
    2230           0 :         free(req->name);
    2231           0 : }
    2232             : 
    2233             : static const struct spdk_json_object_decoder rpc_bdev_nvme_set_preferred_path_decoders[] = {
    2234             :         {"name", offsetof(struct rpc_bdev_nvme_set_preferred_path, name), spdk_json_decode_string},
    2235             :         {"cntlid", offsetof(struct rpc_bdev_nvme_set_preferred_path, cntlid), spdk_json_decode_uint16},
    2236             : };
    2237             : 
    2238             : struct rpc_bdev_nvme_set_preferred_path_ctx {
    2239             :         struct rpc_bdev_nvme_set_preferred_path req;
    2240             :         struct spdk_jsonrpc_request *request;
    2241             : };
    2242             : 
    2243             : static void
    2244           0 : rpc_bdev_nvme_set_preferred_path_done(void *cb_arg, int rc)
    2245             : {
    2246           0 :         struct rpc_bdev_nvme_set_preferred_path_ctx *ctx = cb_arg;
    2247             : 
    2248           0 :         if (rc == 0) {
    2249           0 :                 spdk_jsonrpc_send_bool_response(ctx->request, true);
    2250             :         } else {
    2251           0 :                 spdk_jsonrpc_send_error_response(ctx->request, rc, spdk_strerror(-rc));
    2252             :         }
    2253             : 
    2254           0 :         free_rpc_bdev_nvme_set_preferred_path(&ctx->req);
    2255           0 :         free(ctx);
    2256           0 : }
    2257             : 
    2258             : static void
    2259           0 : rpc_bdev_nvme_set_preferred_path(struct spdk_jsonrpc_request *request,
    2260             :                                  const struct spdk_json_val *params)
    2261             : {
    2262             :         struct rpc_bdev_nvme_set_preferred_path_ctx *ctx;
    2263             : 
    2264           0 :         ctx = calloc(1, sizeof(*ctx));
    2265           0 :         if (ctx == NULL) {
    2266           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
    2267           0 :                 return;
    2268             :         }
    2269             : 
    2270           0 :         if (spdk_json_decode_object(params, rpc_bdev_nvme_set_preferred_path_decoders,
    2271             :                                     SPDK_COUNTOF(rpc_bdev_nvme_set_preferred_path_decoders),
    2272           0 :                                     &ctx->req)) {
    2273           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
    2274           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    2275             :                                                  "spdk_json_decode_object failed");
    2276           0 :                 goto cleanup;
    2277             :         }
    2278             : 
    2279           0 :         ctx->request = request;
    2280             : 
    2281           0 :         bdev_nvme_set_preferred_path(ctx->req.name, ctx->req.cntlid,
    2282             :                                      rpc_bdev_nvme_set_preferred_path_done, ctx);
    2283           0 :         return;
    2284             : 
    2285           0 : cleanup:
    2286           0 :         free_rpc_bdev_nvme_set_preferred_path(&ctx->req);
    2287           0 :         free(ctx);
    2288             : }
    2289           0 : SPDK_RPC_REGISTER("bdev_nvme_set_preferred_path", rpc_bdev_nvme_set_preferred_path,
    2290             :                   SPDK_RPC_RUNTIME)
    2291             : 
    2292             : struct rpc_set_multipath_policy {
    2293             :         char *name;
    2294             :         enum bdev_nvme_multipath_policy policy;
    2295             :         enum bdev_nvme_multipath_selector selector;
    2296             :         uint32_t rr_min_io;
    2297             : };
    2298             : 
    2299             : static void
    2300           0 : free_rpc_set_multipath_policy(struct rpc_set_multipath_policy *req)
    2301             : {
    2302           0 :         free(req->name);
    2303           0 : }
    2304             : 
    2305             : static int
    2306           0 : rpc_decode_mp_policy(const struct spdk_json_val *val, void *out)
    2307             : {
    2308           0 :         enum bdev_nvme_multipath_policy *policy = out;
    2309             : 
    2310           0 :         if (spdk_json_strequal(val, "active_passive") == true) {
    2311           0 :                 *policy = BDEV_NVME_MP_POLICY_ACTIVE_PASSIVE;
    2312           0 :         } else if (spdk_json_strequal(val, "active_active") == true) {
    2313           0 :                 *policy = BDEV_NVME_MP_POLICY_ACTIVE_ACTIVE;
    2314             :         } else {
    2315           0 :                 SPDK_NOTICELOG("Invalid parameter value: policy\n");
    2316           0 :                 return -EINVAL;
    2317             :         }
    2318             : 
    2319           0 :         return 0;
    2320             : }
    2321             : 
    2322             : static int
    2323           0 : rpc_decode_mp_selector(const struct spdk_json_val *val, void *out)
    2324             : {
    2325           0 :         enum bdev_nvme_multipath_selector *selector = out;
    2326             : 
    2327           0 :         if (spdk_json_strequal(val, "round_robin") == true) {
    2328           0 :                 *selector = BDEV_NVME_MP_SELECTOR_ROUND_ROBIN;
    2329           0 :         } else if (spdk_json_strequal(val, "queue_depth") == true) {
    2330           0 :                 *selector = BDEV_NVME_MP_SELECTOR_QUEUE_DEPTH;
    2331             :         } else {
    2332           0 :                 SPDK_NOTICELOG("Invalid parameter value: selector\n");
    2333           0 :                 return -EINVAL;
    2334             :         }
    2335             : 
    2336           0 :         return 0;
    2337             : }
    2338             : 
    2339             : static const struct spdk_json_object_decoder rpc_set_multipath_policy_decoders[] = {
    2340             :         {"name", offsetof(struct rpc_set_multipath_policy, name), spdk_json_decode_string},
    2341             :         {"policy", offsetof(struct rpc_set_multipath_policy, policy), rpc_decode_mp_policy},
    2342             :         {"selector", offsetof(struct rpc_set_multipath_policy, selector), rpc_decode_mp_selector, true},
    2343             :         {"rr_min_io", offsetof(struct rpc_set_multipath_policy, rr_min_io), spdk_json_decode_uint32, true},
    2344             : };
    2345             : 
    2346             : struct rpc_set_multipath_policy_ctx {
    2347             :         struct rpc_set_multipath_policy req;
    2348             :         struct spdk_jsonrpc_request *request;
    2349             : };
    2350             : 
    2351             : static void
    2352           0 : rpc_bdev_nvme_set_multipath_policy_done(void *cb_arg, int rc)
    2353             : {
    2354           0 :         struct rpc_set_multipath_policy_ctx *ctx = cb_arg;
    2355             : 
    2356           0 :         if (rc == 0) {
    2357           0 :                 spdk_jsonrpc_send_bool_response(ctx->request, true);
    2358             :         } else {
    2359           0 :                 spdk_jsonrpc_send_error_response(ctx->request, rc, spdk_strerror(-rc));
    2360             :         }
    2361             : 
    2362           0 :         free_rpc_set_multipath_policy(&ctx->req);
    2363           0 :         free(ctx);
    2364           0 : }
    2365             : 
    2366             : static void
    2367           0 : rpc_bdev_nvme_set_multipath_policy(struct spdk_jsonrpc_request *request,
    2368             :                                    const struct spdk_json_val *params)
    2369             : {
    2370             :         struct rpc_set_multipath_policy_ctx *ctx;
    2371             : 
    2372           0 :         ctx = calloc(1, sizeof(*ctx));
    2373           0 :         if (ctx == NULL) {
    2374           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
    2375           0 :                 return;
    2376             :         }
    2377             : 
    2378           0 :         ctx->req.rr_min_io = UINT32_MAX;
    2379           0 :         ctx->req.selector = UINT32_MAX;
    2380             : 
    2381           0 :         if (spdk_json_decode_object(params, rpc_set_multipath_policy_decoders,
    2382             :                                     SPDK_COUNTOF(rpc_set_multipath_policy_decoders),
    2383           0 :                                     &ctx->req)) {
    2384           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
    2385           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    2386             :                                                  "spdk_json_decode_object failed");
    2387           0 :                 goto cleanup;
    2388             :         }
    2389             : 
    2390           0 :         ctx->request = request;
    2391           0 :         if (ctx->req.selector == UINT32_MAX) {
    2392           0 :                 if (ctx->req.policy == BDEV_NVME_MP_POLICY_ACTIVE_ACTIVE) {
    2393           0 :                         ctx->req.selector = BDEV_NVME_MP_SELECTOR_ROUND_ROBIN;
    2394             :                 } else {
    2395           0 :                         ctx->req.selector = 0;
    2396             :                 }
    2397             :         }
    2398             : 
    2399           0 :         if (ctx->req.policy != BDEV_NVME_MP_POLICY_ACTIVE_ACTIVE && ctx->req.selector > 0) {
    2400           0 :                 SPDK_ERRLOG("selector only works in active_active mode\n");
    2401           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    2402             :                                                  "spdk_json_decode_object failed");
    2403           0 :                 goto cleanup;
    2404             :         }
    2405             : 
    2406           0 :         bdev_nvme_set_multipath_policy(ctx->req.name, ctx->req.policy, ctx->req.selector,
    2407             :                                        ctx->req.rr_min_io,
    2408             :                                        rpc_bdev_nvme_set_multipath_policy_done, ctx);
    2409           0 :         return;
    2410             : 
    2411           0 : cleanup:
    2412           0 :         free_rpc_set_multipath_policy(&ctx->req);
    2413           0 :         free(ctx);
    2414             : }
    2415           0 : SPDK_RPC_REGISTER("bdev_nvme_set_multipath_policy", rpc_bdev_nvme_set_multipath_policy,
    2416             :                   SPDK_RPC_RUNTIME)
    2417             : 
    2418             : struct rpc_bdev_nvme_start_mdns_discovery {
    2419             :         char *name;
    2420             :         char *svcname;
    2421             :         char *hostnqn;
    2422             :         struct spdk_nvme_ctrlr_opts opts;
    2423             :         struct nvme_ctrlr_opts bdev_opts;
    2424             : };
    2425             : 
    2426             : static void
    2427           0 : free_rpc_bdev_nvme_start_mdns_discovery(struct rpc_bdev_nvme_start_mdns_discovery *req)
    2428             : {
    2429           0 :         free(req->name);
    2430           0 :         free(req->svcname);
    2431           0 :         free(req->hostnqn);
    2432           0 : }
    2433             : 
    2434             : static const struct spdk_json_object_decoder rpc_bdev_nvme_start_mdns_discovery_decoders[] = {
    2435             :         {"name", offsetof(struct rpc_bdev_nvme_start_mdns_discovery, name), spdk_json_decode_string},
    2436             :         {"svcname", offsetof(struct rpc_bdev_nvme_start_mdns_discovery, svcname), spdk_json_decode_string},
    2437             :         {"hostnqn", offsetof(struct rpc_bdev_nvme_start_mdns_discovery, hostnqn), spdk_json_decode_string, true},
    2438             : };
    2439             : 
    2440             : struct rpc_bdev_nvme_start_mdns_discovery_ctx {
    2441             :         struct rpc_bdev_nvme_start_mdns_discovery req;
    2442             :         struct spdk_jsonrpc_request *request;
    2443             : };
    2444             : 
    2445             : static void
    2446           0 : rpc_bdev_nvme_start_mdns_discovery(struct spdk_jsonrpc_request *request,
    2447             :                                    const struct spdk_json_val *params)
    2448             : {
    2449             :         struct rpc_bdev_nvme_start_mdns_discovery_ctx *ctx;
    2450             :         int rc;
    2451             : 
    2452           0 :         ctx = calloc(1, sizeof(*ctx));
    2453           0 :         if (!ctx) {
    2454           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
    2455           0 :                 return;
    2456             :         }
    2457             : 
    2458           0 :         spdk_nvme_ctrlr_get_default_ctrlr_opts(&ctx->req.opts, sizeof(ctx->req.opts));
    2459             : 
    2460           0 :         if (spdk_json_decode_object(params, rpc_bdev_nvme_start_mdns_discovery_decoders,
    2461             :                                     SPDK_COUNTOF(rpc_bdev_nvme_start_mdns_discovery_decoders),
    2462           0 :                                     &ctx->req)) {
    2463           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
    2464           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    2465             :                                                  "spdk_json_decode_object failed");
    2466           0 :                 goto cleanup;
    2467             :         }
    2468             : 
    2469           0 :         if (ctx->req.hostnqn) {
    2470           0 :                 snprintf(ctx->req.opts.hostnqn, sizeof(ctx->req.opts.hostnqn), "%s",
    2471             :                          ctx->req.hostnqn);
    2472             :         }
    2473           0 :         ctx->request = request;
    2474           0 :         rc = bdev_nvme_start_mdns_discovery(ctx->req.name, ctx->req.svcname, &ctx->req.opts,
    2475             :                                             &ctx->req.bdev_opts);
    2476           0 :         if (rc) {
    2477           0 :                 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
    2478             :         } else {
    2479           0 :                 spdk_jsonrpc_send_bool_response(request, true);
    2480             :         }
    2481             : 
    2482           0 : cleanup:
    2483           0 :         free_rpc_bdev_nvme_start_mdns_discovery(&ctx->req);
    2484           0 :         free(ctx);
    2485             : }
    2486           0 : SPDK_RPC_REGISTER("bdev_nvme_start_mdns_discovery", rpc_bdev_nvme_start_mdns_discovery,
    2487             :                   SPDK_RPC_RUNTIME)
    2488             : 
    2489             : struct rpc_bdev_nvme_stop_mdns_discovery {
    2490             :         char *name;
    2491             : };
    2492             : 
    2493             : static const struct spdk_json_object_decoder rpc_bdev_nvme_stop_mdns_discovery_decoders[] = {
    2494             :         {"name", offsetof(struct rpc_bdev_nvme_stop_mdns_discovery, name), spdk_json_decode_string},
    2495             : };
    2496             : 
    2497             : struct rpc_bdev_nvme_stop_mdns_discovery_ctx {
    2498             :         struct rpc_bdev_nvme_stop_mdns_discovery req;
    2499             :         struct spdk_jsonrpc_request *request;
    2500             : };
    2501             : 
    2502             : static void
    2503           0 : rpc_bdev_nvme_stop_mdns_discovery(struct spdk_jsonrpc_request *request,
    2504             :                                   const struct spdk_json_val *params)
    2505             : {
    2506             :         struct rpc_bdev_nvme_stop_mdns_discovery_ctx *ctx;
    2507             :         int rc;
    2508             : 
    2509           0 :         ctx = calloc(1, sizeof(*ctx));
    2510           0 :         if (!ctx) {
    2511           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
    2512           0 :                 return;
    2513             :         }
    2514             : 
    2515           0 :         if (spdk_json_decode_object(params, rpc_bdev_nvme_stop_mdns_discovery_decoders,
    2516             :                                     SPDK_COUNTOF(rpc_bdev_nvme_stop_mdns_discovery_decoders),
    2517           0 :                                     &ctx->req)) {
    2518           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
    2519           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    2520             :                                                  "spdk_json_decode_object failed");
    2521           0 :                 goto cleanup;
    2522             :         }
    2523             : 
    2524           0 :         ctx->request = request;
    2525           0 :         rc = bdev_nvme_stop_mdns_discovery(ctx->req.name);
    2526             : 
    2527           0 :         if (rc) {
    2528           0 :                 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
    2529           0 :                 goto cleanup;
    2530             :         }
    2531           0 :         spdk_jsonrpc_send_bool_response(ctx->request, true);
    2532             : 
    2533           0 : cleanup:
    2534           0 :         free(ctx->req.name);
    2535           0 :         free(ctx);
    2536             : }
    2537           0 : SPDK_RPC_REGISTER("bdev_nvme_stop_mdns_discovery", rpc_bdev_nvme_stop_mdns_discovery,
    2538             :                   SPDK_RPC_RUNTIME)
    2539             : 
    2540             : static void
    2541           0 : rpc_bdev_nvme_get_mdns_discovery_info(struct spdk_jsonrpc_request *request,
    2542             :                                       const struct spdk_json_val *params)
    2543             : {
    2544           0 :         bdev_nvme_get_mdns_discovery_info(request);
    2545           0 : }
    2546             : 
    2547           0 : SPDK_RPC_REGISTER("bdev_nvme_get_mdns_discovery_info", rpc_bdev_nvme_get_mdns_discovery_info,
    2548             :                   SPDK_RPC_RUNTIME)
    2549             : 
    2550             : struct rpc_get_path_stat {
    2551             :         char    *name;
    2552             : };
    2553             : 
    2554             : struct path_stat {
    2555             :         struct spdk_bdev_io_stat        stat;
    2556             :         struct spdk_nvme_transport_id   trid;
    2557             :         struct nvme_ns                  *ns;
    2558             : };
    2559             : 
    2560             : struct rpc_bdev_nvme_path_stat_ctx {
    2561             :         struct spdk_jsonrpc_request     *request;
    2562             :         struct path_stat                *path_stat;
    2563             :         uint32_t                        num_paths;
    2564             :         struct spdk_bdev_desc           *desc;
    2565             : };
    2566             : 
    2567             : static void
    2568           0 : free_rpc_get_path_stat(struct rpc_get_path_stat *req)
    2569             : {
    2570           0 :         free(req->name);
    2571           0 : }
    2572             : 
    2573             : static const struct spdk_json_object_decoder rpc_get_path_stat_decoders[] = {
    2574             :         {"name", offsetof(struct rpc_get_path_stat, name), spdk_json_decode_string},
    2575             : };
    2576             : 
    2577             : static void
    2578           0 : dummy_bdev_event_cb(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *ctx)
    2579             : {
    2580           0 : }
    2581             : 
    2582             : static void
    2583           0 : rpc_bdev_nvme_path_stat_per_channel(struct spdk_io_channel_iter *i)
    2584             : {
    2585           0 :         struct rpc_bdev_nvme_path_stat_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
    2586           0 :         struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i);
    2587           0 :         struct nvme_bdev_channel *nbdev_ch = spdk_io_channel_get_ctx(ch);
    2588             :         struct nvme_io_path *io_path;
    2589             :         struct path_stat *path_stat;
    2590             :         uint32_t j;
    2591             : 
    2592           0 :         assert(ctx->num_paths != 0);
    2593             : 
    2594           0 :         for (j = 0; j < ctx->num_paths; j++) {
    2595           0 :                 path_stat = &ctx->path_stat[j];
    2596             : 
    2597           0 :                 STAILQ_FOREACH(io_path, &nbdev_ch->io_path_list, stailq) {
    2598           0 :                         if (path_stat->ns == io_path->nvme_ns) {
    2599           0 :                                 assert(io_path->stat != NULL);
    2600           0 :                                 spdk_bdev_add_io_stat(&path_stat->stat, io_path->stat);
    2601             :                         }
    2602             :                 }
    2603             :         }
    2604             : 
    2605           0 :         spdk_for_each_channel_continue(i, 0);
    2606           0 : }
    2607             : 
    2608             : static void
    2609           0 : rpc_bdev_nvme_path_stat_done(struct spdk_io_channel_iter *i, int status)
    2610             : {
    2611           0 :         struct rpc_bdev_nvme_path_stat_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
    2612           0 :         struct nvme_bdev *nbdev = spdk_io_channel_iter_get_io_device(i);
    2613             :         struct spdk_json_write_ctx *w;
    2614             :         struct path_stat *path_stat;
    2615             :         uint32_t j;
    2616             : 
    2617           0 :         assert(ctx->num_paths != 0);
    2618             : 
    2619           0 :         w = spdk_jsonrpc_begin_result(ctx->request);
    2620           0 :         spdk_json_write_object_begin(w);
    2621           0 :         spdk_json_write_named_string(w, "name", nbdev->disk.name);
    2622           0 :         spdk_json_write_named_array_begin(w, "stats");
    2623             : 
    2624           0 :         for (j = 0; j < ctx->num_paths; j++) {
    2625           0 :                 path_stat = &ctx->path_stat[j];
    2626           0 :                 spdk_json_write_object_begin(w);
    2627             : 
    2628           0 :                 spdk_json_write_named_object_begin(w, "trid");
    2629           0 :                 nvme_bdev_dump_trid_json(&path_stat->trid, w);
    2630           0 :                 spdk_json_write_object_end(w);
    2631             : 
    2632           0 :                 spdk_json_write_named_object_begin(w, "stat");
    2633           0 :                 spdk_bdev_dump_io_stat_json(&path_stat->stat, w);
    2634           0 :                 spdk_json_write_object_end(w);
    2635             : 
    2636           0 :                 spdk_json_write_object_end(w);
    2637             :         }
    2638             : 
    2639           0 :         spdk_json_write_array_end(w);
    2640           0 :         spdk_json_write_object_end(w);
    2641           0 :         spdk_jsonrpc_end_result(ctx->request, w);
    2642             : 
    2643           0 :         spdk_bdev_close(ctx->desc);
    2644           0 :         free(ctx->path_stat);
    2645           0 :         free(ctx);
    2646           0 : }
    2647             : 
    2648             : static void
    2649           0 : rpc_bdev_nvme_get_path_iostat(struct spdk_jsonrpc_request *request,
    2650             :                               const struct spdk_json_val *params)
    2651             : {
    2652           0 :         struct rpc_get_path_stat req = {};
    2653           0 :         struct spdk_bdev_desc *desc = NULL;
    2654             :         struct spdk_bdev *bdev;
    2655             :         struct nvme_bdev *nbdev;
    2656             :         struct nvme_ns *nvme_ns;
    2657             :         struct path_stat *path_stat;
    2658             :         struct rpc_bdev_nvme_path_stat_ctx *ctx;
    2659           0 :         struct spdk_bdev_nvme_opts opts;
    2660           0 :         uint32_t num_paths = 0, i = 0;
    2661             :         int rc;
    2662             : 
    2663           0 :         bdev_nvme_get_opts(&opts);
    2664           0 :         if (!opts.io_path_stat) {
    2665           0 :                 SPDK_ERRLOG("RPC not enabled if enable_io_path_stat is false\n");
    2666           0 :                 spdk_jsonrpc_send_error_response(request, -EPERM,
    2667             :                                                  "RPC not enabled if enable_io_path_stat is false");
    2668           0 :                 return;
    2669             :         }
    2670             : 
    2671           0 :         if (spdk_json_decode_object(params, rpc_get_path_stat_decoders,
    2672             :                                     SPDK_COUNTOF(rpc_get_path_stat_decoders),
    2673             :                                     &req)) {
    2674           0 :                 SPDK_ERRLOG("spdk_json_decode_object failed\n");
    2675           0 :                 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
    2676             :                                                  "spdk_json_decode_object failed");
    2677           0 :                 free_rpc_get_path_stat(&req);
    2678           0 :                 return;
    2679             :         }
    2680             : 
    2681           0 :         rc = spdk_bdev_open_ext(req.name, false, dummy_bdev_event_cb, NULL, &desc);
    2682           0 :         if (rc != 0) {
    2683           0 :                 SPDK_ERRLOG("Failed to open bdev '%s': %d\n", req.name, rc);
    2684           0 :                 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
    2685           0 :                 free_rpc_get_path_stat(&req);
    2686           0 :                 return;
    2687             :         }
    2688             : 
    2689           0 :         free_rpc_get_path_stat(&req);
    2690             : 
    2691           0 :         ctx = calloc(1, sizeof(struct rpc_bdev_nvme_path_stat_ctx));
    2692           0 :         if (ctx == NULL) {
    2693           0 :                 spdk_bdev_close(desc);
    2694           0 :                 SPDK_ERRLOG("Failed to allocate rpc_bdev_nvme_path_stat_ctx struct\n");
    2695           0 :                 spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
    2696           0 :                 return;
    2697             :         }
    2698             : 
    2699           0 :         bdev = spdk_bdev_desc_get_bdev(desc);
    2700           0 :         nbdev = bdev->ctxt;
    2701             : 
    2702           0 :         pthread_mutex_lock(&nbdev->mutex);
    2703           0 :         if (nbdev->ref == 0) {
    2704           0 :                 rc = -ENOENT;
    2705           0 :                 goto err;
    2706             :         }
    2707             : 
    2708           0 :         num_paths = nbdev->ref;
    2709           0 :         path_stat = calloc(num_paths, sizeof(struct path_stat));
    2710           0 :         if (path_stat == NULL) {
    2711           0 :                 rc = -ENOMEM;
    2712           0 :                 SPDK_ERRLOG("Failed to allocate memory for path_stat.\n");
    2713           0 :                 goto err;
    2714             :         }
    2715             : 
    2716             :         /* store the history stat */
    2717           0 :         TAILQ_FOREACH(nvme_ns, &nbdev->nvme_ns_list, tailq) {
    2718           0 :                 assert(i < num_paths);
    2719           0 :                 path_stat[i].ns = nvme_ns;
    2720           0 :                 path_stat[i].trid = nvme_ns->ctrlr->active_path_id->trid;
    2721             : 
    2722           0 :                 assert(nvme_ns->stat != NULL);
    2723           0 :                 memcpy(&path_stat[i].stat, nvme_ns->stat, sizeof(struct spdk_bdev_io_stat));
    2724           0 :                 i++;
    2725             :         }
    2726           0 :         pthread_mutex_unlock(&nbdev->mutex);
    2727             : 
    2728           0 :         ctx->request = request;
    2729           0 :         ctx->desc = desc;
    2730           0 :         ctx->path_stat = path_stat;
    2731           0 :         ctx->num_paths = num_paths;
    2732             : 
    2733           0 :         spdk_for_each_channel(nbdev,
    2734             :                               rpc_bdev_nvme_path_stat_per_channel,
    2735             :                               ctx,
    2736             :                               rpc_bdev_nvme_path_stat_done);
    2737           0 :         return;
    2738             : 
    2739           0 : err:
    2740           0 :         pthread_mutex_unlock(&nbdev->mutex);
    2741           0 :         spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
    2742           0 :         spdk_bdev_close(desc);
    2743           0 :         free(ctx);
    2744             : }
    2745           0 : SPDK_RPC_REGISTER("bdev_nvme_get_path_iostat", rpc_bdev_nvme_get_path_iostat,
    2746             :                   SPDK_RPC_RUNTIME)

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