LCOV - code coverage report
Current view: top level - lib/rdma - rdma_verbs.c (source / functions) Hit Total Coverage
Test: ut_cov_unit.info Lines: 0 77 0.0 %
Date: 2024-07-15 06:45:20 Functions: 0 7 0.0 %

          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             :  */
       5             : 
       6             : #include <rdma/rdma_cma.h>
       7             : 
       8             : #include "spdk/stdinc.h"
       9             : #include "spdk/string.h"
      10             : #include "spdk/likely.h"
      11             : 
      12             : #include "spdk_internal/rdma.h"
      13             : #include "spdk/log.h"
      14             : 
      15             : struct spdk_rdma_qp *
      16           0 : spdk_rdma_qp_create(struct rdma_cm_id *cm_id, struct spdk_rdma_qp_init_attr *qp_attr)
      17             : {
      18             :         struct spdk_rdma_qp *spdk_rdma_qp;
      19             :         int rc;
      20           0 :         struct ibv_qp_init_attr attr = {
      21           0 :                 .qp_context = qp_attr->qp_context,
      22           0 :                 .send_cq = qp_attr->send_cq,
      23           0 :                 .recv_cq = qp_attr->recv_cq,
      24           0 :                 .srq = qp_attr->srq,
      25             :                 .cap = qp_attr->cap,
      26             :                 .qp_type = IBV_QPT_RC
      27             :         };
      28             : 
      29           0 :         spdk_rdma_qp = calloc(1, sizeof(*spdk_rdma_qp));
      30           0 :         if (!spdk_rdma_qp) {
      31           0 :                 SPDK_ERRLOG("qp memory allocation failed\n");
      32           0 :                 return NULL;
      33             :         }
      34             : 
      35           0 :         if (qp_attr->stats) {
      36           0 :                 spdk_rdma_qp->stats = qp_attr->stats;
      37           0 :                 spdk_rdma_qp->shared_stats = true;
      38             :         } else {
      39           0 :                 spdk_rdma_qp->stats = calloc(1, sizeof(*spdk_rdma_qp->stats));
      40           0 :                 if (!spdk_rdma_qp->stats) {
      41           0 :                         SPDK_ERRLOG("qp statistics memory allocation failed\n");
      42           0 :                         free(spdk_rdma_qp);
      43           0 :                         return NULL;
      44             :                 }
      45             :         }
      46             : 
      47           0 :         rc = rdma_create_qp(cm_id, qp_attr->pd, &attr);
      48           0 :         if (rc) {
      49           0 :                 SPDK_ERRLOG("Failed to create qp, errno %s (%d)\n", spdk_strerror(errno), errno);
      50           0 :                 free(spdk_rdma_qp);
      51           0 :                 return NULL;
      52             :         }
      53             : 
      54           0 :         qp_attr->cap = attr.cap;
      55           0 :         spdk_rdma_qp->qp = cm_id->qp;
      56           0 :         spdk_rdma_qp->cm_id = cm_id;
      57             : 
      58           0 :         return spdk_rdma_qp;
      59             : }
      60             : 
      61             : int
      62           0 : spdk_rdma_qp_accept(struct spdk_rdma_qp *spdk_rdma_qp, struct rdma_conn_param *conn_param)
      63             : {
      64           0 :         assert(spdk_rdma_qp != NULL);
      65           0 :         assert(spdk_rdma_qp->cm_id != NULL);
      66             : 
      67           0 :         return rdma_accept(spdk_rdma_qp->cm_id, conn_param);
      68             : }
      69             : 
      70             : int
      71           0 : spdk_rdma_qp_complete_connect(struct spdk_rdma_qp *spdk_rdma_qp)
      72             : {
      73             :         /* Nothing to be done for Verbs */
      74           0 :         return 0;
      75             : }
      76             : 
      77             : void
      78           0 : spdk_rdma_qp_destroy(struct spdk_rdma_qp *spdk_rdma_qp)
      79             : {
      80           0 :         assert(spdk_rdma_qp != NULL);
      81             : 
      82           0 :         if (spdk_rdma_qp->send_wrs.first != NULL) {
      83           0 :                 SPDK_WARNLOG("Destroying qpair with queued Work Requests\n");
      84             :         }
      85             : 
      86           0 :         if (spdk_rdma_qp->qp) {
      87           0 :                 rdma_destroy_qp(spdk_rdma_qp->cm_id);
      88             :         }
      89             : 
      90           0 :         if (!spdk_rdma_qp->shared_stats) {
      91           0 :                 free(spdk_rdma_qp->stats);
      92             :         }
      93             : 
      94           0 :         free(spdk_rdma_qp);
      95           0 : }
      96             : 
      97             : int
      98           0 : spdk_rdma_qp_disconnect(struct spdk_rdma_qp *spdk_rdma_qp)
      99             : {
     100           0 :         int rc = 0;
     101             : 
     102           0 :         assert(spdk_rdma_qp != NULL);
     103             : 
     104           0 :         if (spdk_rdma_qp->cm_id) {
     105           0 :                 rc = rdma_disconnect(spdk_rdma_qp->cm_id);
     106           0 :                 if (rc) {
     107           0 :                         if (errno == EINVAL && spdk_rdma_qp->qp->context->device->transport_type == IBV_TRANSPORT_IWARP) {
     108             :                                 /* rdma_disconnect may return an error and set errno to EINVAL in case of iWARP.
     109             :                                  * This behaviour is expected since iWARP handles disconnect event other than IB and
     110             :                                  * qpair is already in error state when we call rdma_disconnect */
     111           0 :                                 return 0;
     112             :                         }
     113           0 :                         SPDK_ERRLOG("rdma_disconnect failed, errno %s (%d)\n", spdk_strerror(errno), errno);
     114             :                 }
     115             :         }
     116             : 
     117           0 :         return rc;
     118             : }
     119             : 
     120             : bool
     121           0 : spdk_rdma_qp_queue_send_wrs(struct spdk_rdma_qp *spdk_rdma_qp, struct ibv_send_wr *first)
     122             : {
     123             :         struct ibv_send_wr *last;
     124             : 
     125           0 :         assert(spdk_rdma_qp);
     126           0 :         assert(first);
     127             : 
     128           0 :         spdk_rdma_qp->stats->send.num_submitted_wrs++;
     129           0 :         last = first;
     130           0 :         while (last->next != NULL) {
     131           0 :                 last = last->next;
     132           0 :                 spdk_rdma_qp->stats->send.num_submitted_wrs++;
     133             :         }
     134             : 
     135           0 :         if (spdk_rdma_qp->send_wrs.first == NULL) {
     136           0 :                 spdk_rdma_qp->send_wrs.first = first;
     137           0 :                 spdk_rdma_qp->send_wrs.last = last;
     138           0 :                 return true;
     139             :         } else {
     140           0 :                 spdk_rdma_qp->send_wrs.last->next = first;
     141           0 :                 spdk_rdma_qp->send_wrs.last = last;
     142           0 :                 return false;
     143             :         }
     144             : }
     145             : 
     146             : int
     147           0 : spdk_rdma_qp_flush_send_wrs(struct spdk_rdma_qp *spdk_rdma_qp, struct ibv_send_wr **bad_wr)
     148             : {
     149             :         int rc;
     150             : 
     151           0 :         assert(spdk_rdma_qp);
     152           0 :         assert(bad_wr);
     153             : 
     154           0 :         if (spdk_unlikely(!spdk_rdma_qp->send_wrs.first)) {
     155           0 :                 return 0;
     156             :         }
     157             : 
     158           0 :         rc = ibv_post_send(spdk_rdma_qp->qp, spdk_rdma_qp->send_wrs.first, bad_wr);
     159             : 
     160           0 :         spdk_rdma_qp->send_wrs.first = NULL;
     161           0 :         spdk_rdma_qp->stats->send.doorbell_updates++;
     162             : 
     163           0 :         return rc;
     164             : }

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