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/conn.h" 40 #include "iscsi/task.h" 41 42 static void 43 spdk_iscsi_task_free(struct spdk_scsi_task *scsi_task) 44 { 45 struct spdk_iscsi_task *task = spdk_iscsi_task_from_scsi_task(scsi_task); 46 47 spdk_iscsi_task_disassociate_pdu(task); 48 assert(task->conn->pending_task_cnt > 0); 49 task->conn->pending_task_cnt--; 50 rte_mempool_put(g_spdk_iscsi.task_pool, (void *)task); 51 } 52 53 struct spdk_iscsi_task * 54 spdk_iscsi_task_get(struct spdk_iscsi_conn *conn, struct spdk_iscsi_task *parent, 55 spdk_scsi_task_cpl cpl_fn) 56 { 57 struct spdk_iscsi_task *task; 58 int rc; 59 60 rc = rte_mempool_get(g_spdk_iscsi.task_pool, (void **)&task); 61 if ((rc < 0) || !task) { 62 SPDK_ERRLOG("Unable to get task\n"); 63 abort(); 64 } 65 66 memset(task, 0, sizeof(*task)); 67 task->conn = conn; 68 assert(conn->pending_task_cnt < UINT32_MAX); 69 conn->pending_task_cnt++; 70 spdk_scsi_task_construct(&task->scsi, 71 cpl_fn, 72 spdk_iscsi_task_free, 73 parent ? &parent->scsi : NULL); 74 if (parent) { 75 task->tag = parent->tag; 76 } 77 78 return task; 79 } 80