1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (c) Intel Corporation. All rights reserved. 5 * Copyright (c) 2018-2019 Mellanox Technologies LTD. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include "event_nvmf.h" 35 36 #include "spdk/rpc.h" 37 #include "spdk/util.h" 38 39 static const struct spdk_json_object_decoder nvmf_rpc_subsystem_tgt_opts_decoder[] = { 40 {"max_subsystems", 0, spdk_json_decode_uint32, true} 41 }; 42 43 static void 44 spdk_rpc_set_nvmf_target_max_subsystems(struct spdk_jsonrpc_request *request, 45 const struct spdk_json_val *params) 46 { 47 struct spdk_json_write_ctx *w; 48 uint32_t max_subsystems = 0; 49 50 if (g_spdk_nvmf_tgt_max_subsystems != 0) { 51 SPDK_ERRLOG("this RPC must not be called more than once.\n"); 52 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 53 "Must not call more than once"); 54 return; 55 } 56 57 if (params != NULL) { 58 if (spdk_json_decode_object(params, nvmf_rpc_subsystem_tgt_opts_decoder, 59 SPDK_COUNTOF(nvmf_rpc_subsystem_tgt_opts_decoder), &max_subsystems)) { 60 SPDK_ERRLOG("spdk_json_decode_object() failed\n"); 61 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, 62 "Invalid parameters"); 63 return; 64 } 65 } 66 67 g_spdk_nvmf_tgt_max_subsystems = max_subsystems; 68 69 w = spdk_jsonrpc_begin_result(request); 70 spdk_json_write_bool(w, true); 71 spdk_jsonrpc_end_result(request, w); 72 } 73 SPDK_RPC_REGISTER("set_nvmf_target_max_subsystems", spdk_rpc_set_nvmf_target_max_subsystems, 74 SPDK_RPC_STARTUP) 75 76 static int decode_conn_sched(const struct spdk_json_val *val, void *out) 77 { 78 enum spdk_nvmf_connect_sched *sched = out; 79 80 if (spdk_json_strequal(val, "roundrobin") == true) { 81 *sched = CONNECT_SCHED_ROUND_ROBIN; 82 } else if (spdk_json_strequal(val, "hostip") == true) { 83 *sched = CONNECT_SCHED_HOST_IP; 84 } else if (spdk_json_strequal(val, "transport") == true) { 85 *sched = CONNECT_SCHED_TRANSPORT_OPTIMAL_GROUP; 86 } else { 87 SPDK_ERRLOG("Invalid connection scheduling parameter\n"); 88 return -EINVAL; 89 } 90 91 return 0; 92 } 93 94 static const struct spdk_json_object_decoder nvmf_rpc_subsystem_tgt_conf_decoder[] = { 95 {"acceptor_poll_rate", offsetof(struct spdk_nvmf_tgt_conf, acceptor_poll_rate), spdk_json_decode_uint32, true}, 96 {"conn_sched", offsetof(struct spdk_nvmf_tgt_conf, conn_sched), decode_conn_sched, true}, 97 }; 98 99 static void 100 spdk_rpc_set_nvmf_target_config(struct spdk_jsonrpc_request *request, 101 const struct spdk_json_val *params) 102 { 103 struct spdk_nvmf_tgt_conf *conf; 104 struct spdk_json_write_ctx *w; 105 106 if (g_spdk_nvmf_tgt_conf != NULL) { 107 SPDK_ERRLOG("this RPC must not be called more than once.\n"); 108 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 109 "Must not call more than once"); 110 return; 111 } 112 113 conf = calloc(1, sizeof(*conf)); 114 if (conf == NULL) { 115 SPDK_ERRLOG("calloc() failed for target config\n"); 116 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 117 "Out of memory"); 118 return; 119 } 120 121 conf->acceptor_poll_rate = ACCEPT_TIMEOUT_US; 122 conf->conn_sched = DEFAULT_CONN_SCHED; 123 124 if (params != NULL) { 125 if (spdk_json_decode_object(params, nvmf_rpc_subsystem_tgt_conf_decoder, 126 SPDK_COUNTOF(nvmf_rpc_subsystem_tgt_conf_decoder), conf)) { 127 free(conf); 128 SPDK_ERRLOG("spdk_json_decode_object() failed\n"); 129 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, 130 "Invalid parameters"); 131 return; 132 } 133 } 134 135 g_spdk_nvmf_tgt_conf = conf; 136 137 w = spdk_jsonrpc_begin_result(request); 138 spdk_json_write_bool(w, true); 139 spdk_jsonrpc_end_result(request, w); 140 } 141 SPDK_RPC_REGISTER("set_nvmf_target_config", spdk_rpc_set_nvmf_target_config, SPDK_RPC_STARTUP) 142