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/log.h" 15 : 16 : struct spdk_rdma_provider_qp * 17 0 : spdk_rdma_provider_qp_create(struct rdma_cm_id *cm_id, 18 : struct spdk_rdma_provider_qp_init_attr *qp_attr) 19 : { 20 : struct spdk_rdma_provider_qp *spdk_rdma_qp; 21 : int rc; 22 0 : struct ibv_qp_init_attr attr = { 23 0 : .qp_context = qp_attr->qp_context, 24 0 : .send_cq = qp_attr->send_cq, 25 0 : .recv_cq = qp_attr->recv_cq, 26 0 : .srq = qp_attr->srq, 27 : .cap = qp_attr->cap, 28 : .qp_type = IBV_QPT_RC 29 : }; 30 : 31 0 : spdk_rdma_qp = calloc(1, sizeof(*spdk_rdma_qp)); 32 0 : if (!spdk_rdma_qp) { 33 0 : SPDK_ERRLOG("qp memory allocation failed\n"); 34 0 : return NULL; 35 : } 36 : 37 0 : if (qp_attr->stats) { 38 0 : spdk_rdma_qp->stats = qp_attr->stats; 39 0 : spdk_rdma_qp->shared_stats = true; 40 : } else { 41 0 : spdk_rdma_qp->stats = calloc(1, sizeof(*spdk_rdma_qp->stats)); 42 0 : if (!spdk_rdma_qp->stats) { 43 0 : SPDK_ERRLOG("qp statistics memory allocation failed\n"); 44 0 : free(spdk_rdma_qp); 45 0 : return NULL; 46 : } 47 : } 48 : 49 0 : rc = rdma_create_qp(cm_id, qp_attr->pd, &attr); 50 0 : if (rc) { 51 0 : SPDK_ERRLOG("Failed to create qp, rc %d, errno %s (%d)\n", rc, spdk_strerror(errno), errno); 52 0 : free(spdk_rdma_qp); 53 0 : return NULL; 54 : } 55 : 56 0 : qp_attr->cap = attr.cap; 57 0 : spdk_rdma_qp->qp = cm_id->qp; 58 0 : spdk_rdma_qp->cm_id = cm_id; 59 : 60 0 : return spdk_rdma_qp; 61 : } 62 : 63 : int 64 0 : spdk_rdma_provider_qp_accept(struct spdk_rdma_provider_qp *spdk_rdma_qp, 65 : struct rdma_conn_param *conn_param) 66 : { 67 0 : assert(spdk_rdma_qp != NULL); 68 0 : assert(spdk_rdma_qp->cm_id != NULL); 69 : 70 0 : return rdma_accept(spdk_rdma_qp->cm_id, conn_param); 71 : } 72 : 73 : int 74 0 : spdk_rdma_provider_qp_complete_connect(struct spdk_rdma_provider_qp *spdk_rdma_qp) 75 : { 76 : /* Nothing to be done for Verbs */ 77 0 : return 0; 78 : } 79 : 80 : void 81 0 : spdk_rdma_provider_qp_destroy(struct spdk_rdma_provider_qp *spdk_rdma_qp) 82 : { 83 0 : assert(spdk_rdma_qp != NULL); 84 : 85 0 : if (spdk_rdma_qp->send_wrs.first != NULL) { 86 0 : SPDK_WARNLOG("Destroying qpair with queued Work Requests\n"); 87 : } 88 : 89 0 : if (spdk_rdma_qp->qp) { 90 0 : rdma_destroy_qp(spdk_rdma_qp->cm_id); 91 : } 92 : 93 0 : if (!spdk_rdma_qp->shared_stats) { 94 0 : free(spdk_rdma_qp->stats); 95 : } 96 : 97 0 : free(spdk_rdma_qp); 98 0 : } 99 : 100 : int 101 0 : spdk_rdma_provider_qp_disconnect(struct spdk_rdma_provider_qp *spdk_rdma_qp) 102 : { 103 0 : int rc = 0; 104 : 105 0 : assert(spdk_rdma_qp != NULL); 106 : 107 0 : if (spdk_rdma_qp->cm_id) { 108 0 : rc = rdma_disconnect(spdk_rdma_qp->cm_id); 109 0 : if (rc) { 110 0 : if (errno == EINVAL && spdk_rdma_qp->qp->context->device->transport_type == IBV_TRANSPORT_IWARP) { 111 : /* rdma_disconnect may return an error and set errno to EINVAL in case of iWARP. 112 : * This behaviour is expected since iWARP handles disconnect event other than IB and 113 : * qpair is already in error state when we call rdma_disconnect */ 114 0 : return 0; 115 : } 116 0 : SPDK_ERRLOG("rdma_disconnect failed, errno %s (%d)\n", spdk_strerror(errno), errno); 117 : } 118 : } 119 : 120 0 : return rc; 121 : } 122 : 123 : bool 124 0 : spdk_rdma_provider_qp_queue_send_wrs(struct spdk_rdma_provider_qp *spdk_rdma_qp, 125 : struct ibv_send_wr *first) 126 : { 127 : struct ibv_send_wr *last; 128 : 129 0 : assert(spdk_rdma_qp); 130 0 : assert(first); 131 : 132 0 : spdk_rdma_qp->stats->send.num_submitted_wrs++; 133 0 : last = first; 134 0 : while (last->next != NULL) { 135 0 : last = last->next; 136 0 : spdk_rdma_qp->stats->send.num_submitted_wrs++; 137 : } 138 : 139 0 : if (spdk_rdma_qp->send_wrs.first == NULL) { 140 0 : spdk_rdma_qp->send_wrs.first = first; 141 0 : spdk_rdma_qp->send_wrs.last = last; 142 0 : return true; 143 : } else { 144 0 : spdk_rdma_qp->send_wrs.last->next = first; 145 0 : spdk_rdma_qp->send_wrs.last = last; 146 0 : return false; 147 : } 148 : } 149 : 150 : int 151 0 : spdk_rdma_provider_qp_flush_send_wrs(struct spdk_rdma_provider_qp *spdk_rdma_qp, 152 : struct ibv_send_wr **bad_wr) 153 : { 154 : int rc; 155 : 156 0 : assert(spdk_rdma_qp); 157 0 : assert(bad_wr); 158 : 159 0 : if (spdk_unlikely(!spdk_rdma_qp->send_wrs.first)) { 160 0 : return 0; 161 : } 162 : 163 0 : rc = ibv_post_send(spdk_rdma_qp->qp, spdk_rdma_qp->send_wrs.first, bad_wr); 164 : 165 0 : spdk_rdma_qp->send_wrs.first = NULL; 166 0 : spdk_rdma_qp->stats->send.doorbell_updates++; 167 : 168 0 : return rc; 169 : }