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/*-
* BSD LICENSE
*
* Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "spdk/env.h"
#include "spdk/log.h"
#include "iscsi/conn.h"
#include "iscsi/task.h"
static void
iscsi_task_free(struct spdk_scsi_task *scsi_task)
{
struct spdk_iscsi_task *task = iscsi_task_from_scsi_task(scsi_task);
if (task->parent) {
if (task->scsi.dxfer_dir == SPDK_SCSI_DIR_FROM_DEV) {
assert(task->conn->data_in_cnt > 0);
task->conn->data_in_cnt--;
}
spdk_scsi_task_put(&task->parent->scsi);
task->parent = NULL;
}
iscsi_task_disassociate_pdu(task);
assert(task->conn->pending_task_cnt > 0);
task->conn->pending_task_cnt--;
spdk_mempool_put(g_iscsi.task_pool, (void *)task);
}
struct spdk_iscsi_task *
iscsi_task_get(struct spdk_iscsi_conn *conn, struct spdk_iscsi_task *parent,
spdk_scsi_task_cpl cpl_fn)
{
struct spdk_iscsi_task *task;
task = spdk_mempool_get(g_iscsi.task_pool);
if (!task) {
SPDK_ERRLOG("Unable to get task\n");
abort();
}
assert(conn != NULL);
memset(task, 0, sizeof(*task));
task->conn = conn;
assert(conn->pending_task_cnt < UINT32_MAX);
conn->pending_task_cnt++;
spdk_scsi_task_construct(&task->scsi,
cpl_fn,
iscsi_task_free);
if (parent) {
parent->scsi.ref++;
task->parent = parent;
task->tag = parent->tag;
task->lun_id = parent->lun_id;
task->scsi.dxfer_dir = parent->scsi.dxfer_dir;
task->scsi.transfer_len = parent->scsi.transfer_len;
task->scsi.lun = parent->scsi.lun;
task->scsi.cdb = parent->scsi.cdb;
task->scsi.target_port = parent->scsi.target_port;
task->scsi.initiator_port = parent->scsi.initiator_port;
if (task->scsi.dxfer_dir == SPDK_SCSI_DIR_FROM_DEV) {
conn->data_in_cnt++;
}
}
return task;
}
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