ceph/src/spdk/lib/iscsi/task.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
   5  *   Copyright (c) Intel Corporation.
   6  *   All rights reserved.
   7  *
   8  *   Redistribution and use in source and binary forms, with or without
   9  *   modification, are permitted provided that the following conditions
  10  *   are met:
  11  *
  12  *     * Redistributions of source code must retain the above copyright
  13  *       notice, this list of conditions and the following disclaimer.
  14  *     * Redistributions in binary form must reproduce the above copyright
  15  *       notice, this list of conditions and the following disclaimer in
  16  *       the documentation and/or other materials provided with the
  17  *       distribution.
  18  *     * Neither the name of Intel Corporation nor the names of its
  19  *       contributors may be used to endorse or promote products derived
  20  *       from this software without specific prior written permission.
  21  *
  22  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  26  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  27  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  28  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  32  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include <rte_config.h>
  36 #include <rte_mempool.h>
  37
  38 #include "spdk/log.h"
  39 #include "iscsi/task.h"
  40
  41 static void
  42 spdk_iscsi_task_free(struct spdk_scsi_task *task)
  43 {
  44         spdk_iscsi_task_disassociate_pdu((struct spdk_iscsi_task *)task);
  45         rte_mempool_put(g_spdk_iscsi.task_pool, (void *)task);
  46 }
  47
  48 struct spdk_iscsi_task *
  49 spdk_iscsi_task_get(uint32_t *owner_task_ctr, struct spdk_iscsi_task *parent)
  50 {
  51         struct spdk_iscsi_task *task;
  52         int rc;
  53
  54         rc = rte_mempool_get(g_spdk_iscsi.task_pool, (void **)&task);
  55         if ((rc < 0) || !task) {
  56                 SPDK_ERRLOG("Unable to get task\n");
  57                 abort();
  58         }
  59
  60         memset(task, 0, sizeof(*task));
  61         spdk_scsi_task_construct((struct spdk_scsi_task *)task, owner_task_ctr,
  62                                  (struct spdk_scsi_task *)parent);
  63         task->scsi.free_fn = spdk_iscsi_task_free;
  64
  65         return task;
  66 }