Line data Source code
1 : /* SPDX-License-Identifier: BSD-3-Clause 2 : * Copyright (C) 2020 Intel Corporation. All rights reserved. 3 : * Copyright (c) Mellanox Technologies LTD. All rights reserved. 4 : * Copyright (c) 2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved. 5 : */ 6 : 7 : #include <rdma/rdma_cma.h> 8 : 9 : #include "spdk/stdinc.h" 10 : #include "spdk/string.h" 11 : #include "spdk/likely.h" 12 : 13 : #include "spdk_internal/rdma_provider.h" 14 : #include "spdk_internal/rdma_utils.h" 15 : #include "spdk/log.h" 16 : 17 : struct spdk_rdma_provider_qp * 18 0 : spdk_rdma_provider_qp_create(struct rdma_cm_id *cm_id, 19 : struct spdk_rdma_provider_qp_init_attr *qp_attr) 20 : { 21 : struct spdk_rdma_provider_qp *spdk_rdma_qp; 22 : int rc; 23 0 : struct ibv_qp_init_attr attr = { 24 0 : .qp_context = qp_attr->qp_context, 25 0 : .send_cq = qp_attr->send_cq, 26 0 : .recv_cq = qp_attr->recv_cq, 27 0 : .srq = qp_attr->srq, 28 0 : .cap = qp_attr->cap, 29 : .qp_type = IBV_QPT_RC 30 : }; 31 : 32 0 : if (qp_attr->domain_transfer) { 33 0 : SPDK_ERRLOG("verbs provider doesn't support memory domain transfer functionality"); 34 0 : return NULL; 35 : } 36 : 37 0 : spdk_rdma_qp = calloc(1, sizeof(*spdk_rdma_qp)); 38 0 : if (!spdk_rdma_qp) { 39 0 : SPDK_ERRLOG("qp memory allocation failed\n"); 40 0 : return NULL; 41 : } 42 : 43 0 : if (qp_attr->stats) { 44 0 : spdk_rdma_qp->stats = qp_attr->stats; 45 0 : spdk_rdma_qp->shared_stats = true; 46 0 : } else { 47 0 : spdk_rdma_qp->stats = calloc(1, sizeof(*spdk_rdma_qp->stats)); 48 0 : if (!spdk_rdma_qp->stats) { 49 0 : SPDK_ERRLOG("qp statistics memory allocation failed\n"); 50 0 : free(spdk_rdma_qp); 51 0 : return NULL; 52 : } 53 : } 54 : 55 0 : rc = rdma_create_qp(cm_id, qp_attr->pd, &attr); 56 0 : if (rc) { 57 0 : SPDK_ERRLOG("Failed to create qp, rc %d, errno %s (%d)\n", rc, spdk_strerror(errno), errno); 58 0 : free(spdk_rdma_qp); 59 0 : return NULL; 60 : } 61 0 : spdk_rdma_qp->qp = cm_id->qp; 62 0 : spdk_rdma_qp->cm_id = cm_id; 63 0 : spdk_rdma_qp->domain = spdk_rdma_utils_get_memory_domain(qp_attr->pd); 64 0 : if (!spdk_rdma_qp->domain) { 65 0 : spdk_rdma_provider_qp_destroy(spdk_rdma_qp); 66 0 : return NULL; 67 : } 68 : 69 0 : qp_attr->cap = attr.cap; 70 : 71 0 : return spdk_rdma_qp; 72 0 : } 73 : 74 : int 75 0 : spdk_rdma_provider_qp_accept(struct spdk_rdma_provider_qp *spdk_rdma_qp, 76 : struct rdma_conn_param *conn_param) 77 : { 78 0 : assert(spdk_rdma_qp != NULL); 79 0 : assert(spdk_rdma_qp->cm_id != NULL); 80 : 81 0 : return rdma_accept(spdk_rdma_qp->cm_id, conn_param); 82 : } 83 : 84 : int 85 0 : spdk_rdma_provider_qp_complete_connect(struct spdk_rdma_provider_qp *spdk_rdma_qp) 86 : { 87 : /* Nothing to be done for Verbs */ 88 0 : return 0; 89 : } 90 : 91 : void 92 0 : spdk_rdma_provider_qp_destroy(struct spdk_rdma_provider_qp *spdk_rdma_qp) 93 : { 94 0 : assert(spdk_rdma_qp != NULL); 95 : 96 0 : if (spdk_rdma_qp->send_wrs.first != NULL) { 97 0 : SPDK_WARNLOG("Destroying qpair with queued Work Requests\n"); 98 0 : } 99 : 100 0 : if (spdk_rdma_qp->qp) { 101 0 : rdma_destroy_qp(spdk_rdma_qp->cm_id); 102 0 : } 103 : 104 0 : if (!spdk_rdma_qp->shared_stats) { 105 0 : free(spdk_rdma_qp->stats); 106 0 : } 107 0 : if (spdk_rdma_qp->domain) { 108 0 : spdk_rdma_utils_put_memory_domain(spdk_rdma_qp->domain); 109 0 : } 110 : 111 0 : free(spdk_rdma_qp); 112 0 : } 113 : 114 : int 115 0 : spdk_rdma_provider_qp_disconnect(struct spdk_rdma_provider_qp *spdk_rdma_qp) 116 : { 117 0 : int rc = 0; 118 : 119 0 : assert(spdk_rdma_qp != NULL); 120 : 121 0 : if (spdk_rdma_qp->cm_id) { 122 0 : rc = rdma_disconnect(spdk_rdma_qp->cm_id); 123 0 : if (rc) { 124 0 : if (errno == EINVAL && spdk_rdma_qp->qp->context->device->transport_type == IBV_TRANSPORT_IWARP) { 125 : /* rdma_disconnect may return an error and set errno to EINVAL in case of iWARP. 126 : * This behaviour is expected since iWARP handles disconnect event other than IB and 127 : * qpair is already in error state when we call rdma_disconnect */ 128 0 : return 0; 129 : } 130 0 : SPDK_ERRLOG("rdma_disconnect failed, errno %s (%d)\n", spdk_strerror(errno), errno); 131 0 : } 132 0 : } 133 : 134 0 : return rc; 135 0 : } 136 : 137 : bool 138 0 : spdk_rdma_provider_qp_queue_send_wrs(struct spdk_rdma_provider_qp *spdk_rdma_qp, 139 : struct ibv_send_wr *first) 140 : { 141 : struct ibv_send_wr *last; 142 : 143 0 : assert(spdk_rdma_qp); 144 0 : assert(first); 145 : 146 0 : spdk_rdma_qp->stats->send.num_submitted_wrs++; 147 0 : last = first; 148 0 : while (last->next != NULL) { 149 0 : last = last->next; 150 0 : spdk_rdma_qp->stats->send.num_submitted_wrs++; 151 : } 152 : 153 0 : if (spdk_rdma_qp->send_wrs.first == NULL) { 154 0 : spdk_rdma_qp->send_wrs.first = first; 155 0 : spdk_rdma_qp->send_wrs.last = last; 156 0 : return true; 157 : } else { 158 0 : spdk_rdma_qp->send_wrs.last->next = first; 159 0 : spdk_rdma_qp->send_wrs.last = last; 160 0 : return false; 161 : } 162 0 : } 163 : 164 : int 165 0 : spdk_rdma_provider_qp_flush_send_wrs(struct spdk_rdma_provider_qp *spdk_rdma_qp, 166 : struct ibv_send_wr **bad_wr) 167 : { 168 : int rc; 169 : 170 0 : assert(spdk_rdma_qp); 171 0 : assert(bad_wr); 172 : 173 0 : if (spdk_unlikely(!spdk_rdma_qp->send_wrs.first)) { 174 0 : return 0; 175 : } 176 : 177 0 : rc = ibv_post_send(spdk_rdma_qp->qp, spdk_rdma_qp->send_wrs.first, bad_wr); 178 : 179 0 : spdk_rdma_qp->send_wrs.first = NULL; 180 0 : spdk_rdma_qp->stats->send.doorbell_updates++; 181 : 182 0 : return rc; 183 0 : } 184 : 185 : bool 186 0 : spdk_rdma_provider_accel_sequence_supported(void) 187 : { 188 0 : return false; 189 : }