e45437aba7
The SCSI layer no longer needs to know about the parent/subtask relationship maintained by iSCSI. Change-Id: Ia6f7c5367c5b656bd7521ed1abb6d0f713a0500b Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com> Reviewed-on: https://review.gerrithub.io/393697 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: <shuhei.matsumoto.xt@hitachi.com>
89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "spdk/env.h"
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#include "spdk/log.h"
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#include "iscsi/conn.h"
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#include "iscsi/task.h"
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static void
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spdk_iscsi_task_free(struct spdk_scsi_task *scsi_task)
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{
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struct spdk_iscsi_task *task = spdk_iscsi_task_from_scsi_task(scsi_task);
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if (task->parent) {
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spdk_scsi_task_put(&task->parent->scsi);
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task->parent = NULL;
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}
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spdk_iscsi_task_disassociate_pdu(task);
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assert(task->conn->pending_task_cnt > 0);
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task->conn->pending_task_cnt--;
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spdk_mempool_put(g_spdk_iscsi.task_pool, (void *)task);
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}
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struct spdk_iscsi_task *
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spdk_iscsi_task_get(struct spdk_iscsi_conn *conn, struct spdk_iscsi_task *parent,
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spdk_scsi_task_cpl cpl_fn)
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{
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struct spdk_iscsi_task *task;
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task = spdk_mempool_get(g_spdk_iscsi.task_pool);
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if (!task) {
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SPDK_ERRLOG("Unable to get task\n");
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abort();
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}
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memset(task, 0, sizeof(*task));
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task->conn = conn;
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assert(conn->pending_task_cnt < UINT32_MAX);
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conn->pending_task_cnt++;
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spdk_scsi_task_construct(&task->scsi,
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cpl_fn,
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spdk_iscsi_task_free);
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if (parent) {
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parent->scsi.ref++;
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task->parent = parent;
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task->tag = parent->tag;
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task->scsi.dxfer_dir = parent->scsi.dxfer_dir;
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task->scsi.transfer_len = parent->scsi.transfer_len;
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task->scsi.lun = parent->scsi.lun;
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task->scsi.cdb = parent->scsi.cdb;
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task->scsi.target_port = parent->scsi.target_port;
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task->scsi.initiator_port = parent->scsi.initiator_port;
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}
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return task;
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}
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