2016-08-02 16:34:45 +00:00
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/*-
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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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#ifndef SPDK_ISCSI_TASK_H
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#define SPDK_ISCSI_TASK_H
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#include "iscsi/iscsi.h"
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#include "spdk/scsi.h"
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2018-07-05 22:04:43 +00:00
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#include "spdk/util.h"
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2016-08-02 16:34:45 +00:00
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struct spdk_iscsi_task {
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struct spdk_scsi_task scsi;
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2018-01-04 21:03:34 +00:00
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struct spdk_iscsi_task *parent;
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2018-12-10 07:15:30 +00:00
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uint8_t rsp_scsi_status;
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uint8_t rsp_sense_data[32];
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size_t rsp_sense_data_len;
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2017-05-13 00:16:44 +00:00
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struct spdk_iscsi_conn *conn;
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2016-08-02 16:34:45 +00:00
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struct spdk_iscsi_pdu *pdu;
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uint32_t outstanding_r2t;
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2017-05-03 20:41:51 +00:00
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uint32_t desired_data_transfer_length;
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2017-05-03 21:46:35 +00:00
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/* Only valid for Read/Write */
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uint32_t bytes_completed;
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2017-05-03 20:44:35 +00:00
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uint32_t data_out_cnt;
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2016-08-02 16:34:45 +00:00
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/*
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* Tracks the current offset of large read io.
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*/
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uint32_t current_datain_offset;
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/*
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* next_expected_r2t_offset is used when we receive
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* the DataOUT PDU.
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*/
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uint32_t next_expected_r2t_offset;
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/*
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* Tracks the length of the R2T that is in progress.
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* Used to check that an R2T burst does not exceed
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* MaxBurstLength.
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*/
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uint32_t current_r2t_length;
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/*
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* next_r2t_offset is used when we are sending the
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* R2T packet to keep track of next offset of r2t.
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*/
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uint32_t next_r2t_offset;
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uint32_t R2TSN;
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2017-04-24 18:14:41 +00:00
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uint32_t r2t_datasn; /* record next datasn for a r2tsn */
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2016-08-02 16:34:45 +00:00
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uint32_t acked_r2tsn; /* next r2tsn to be acked */
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uint32_t datain_datasn;
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uint32_t acked_data_sn; /* next expected datain datasn */
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uint32_t ttt;
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2017-05-03 20:36:58 +00:00
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uint32_t tag;
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2017-12-28 22:09:28 +00:00
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/**
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* Record the lun id just in case the lun is invalid,
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* which will happen when hot removing the lun.
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*/
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int lun_id;
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2018-12-09 23:12:11 +00:00
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struct spdk_poller *mgmt_poller;
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2016-08-02 16:34:45 +00:00
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TAILQ_ENTRY(spdk_iscsi_task) link;
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2017-05-03 20:21:56 +00:00
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TAILQ_HEAD(subtask_list, spdk_iscsi_task) subtask_list;
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TAILQ_ENTRY(spdk_iscsi_task) subtask_link;
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2018-08-09 08:51:58 +00:00
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bool is_queued; /* is queued in scsi layer for handling */
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2016-08-02 16:34:45 +00:00
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};
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static inline void
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spdk_iscsi_task_put(struct spdk_iscsi_task *task)
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{
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2016-09-28 06:49:06 +00:00
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spdk_scsi_task_put(&task->scsi);
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2016-08-02 16:34:45 +00:00
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}
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static inline struct spdk_iscsi_pdu *
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spdk_iscsi_task_get_pdu(struct spdk_iscsi_task *task)
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{
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return task->pdu;
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}
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static inline void
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spdk_iscsi_task_set_pdu(struct spdk_iscsi_task *task, struct spdk_iscsi_pdu *pdu)
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{
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task->pdu = pdu;
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}
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static inline struct iscsi_bhs *
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spdk_iscsi_task_get_bhs(struct spdk_iscsi_task *task)
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{
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2019-09-19 04:00:07 +00:00
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return &spdk_iscsi_task_get_pdu(task)->bhs;
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2016-08-02 16:34:45 +00:00
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}
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static inline void
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spdk_iscsi_task_associate_pdu(struct spdk_iscsi_task *task, struct spdk_iscsi_pdu *pdu)
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{
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spdk_iscsi_task_set_pdu(task, pdu);
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pdu->ref++;
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}
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static inline void
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spdk_iscsi_task_disassociate_pdu(struct spdk_iscsi_task *task)
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{
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if (spdk_iscsi_task_get_pdu(task)) {
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spdk_put_pdu(spdk_iscsi_task_get_pdu(task));
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spdk_iscsi_task_set_pdu(task, NULL);
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}
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}
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static inline int
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spdk_iscsi_task_is_immediate(struct spdk_iscsi_task *task)
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{
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struct iscsi_bhs_scsi_req *scsi_req;
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scsi_req = (struct iscsi_bhs_scsi_req *)spdk_iscsi_task_get_bhs(task);
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return (scsi_req->immediate == 1);
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}
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static inline int
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spdk_iscsi_task_is_read(struct spdk_iscsi_task *task)
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{
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struct iscsi_bhs_scsi_req *scsi_req;
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scsi_req = (struct iscsi_bhs_scsi_req *)spdk_iscsi_task_get_bhs(task);
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2017-07-17 22:57:54 +00:00
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return (scsi_req->read_bit == 1);
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2016-08-02 16:34:45 +00:00
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}
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static inline uint32_t
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spdk_iscsi_task_get_cmdsn(struct spdk_iscsi_task *task)
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{
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return spdk_iscsi_task_get_pdu(task)->cmd_sn;
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}
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2017-05-13 00:16:44 +00:00
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struct spdk_iscsi_task *spdk_iscsi_task_get(struct spdk_iscsi_conn *conn,
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2017-06-08 20:45:41 +00:00
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struct spdk_iscsi_task *parent,
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spdk_scsi_task_cpl cpl_fn);
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2016-08-02 16:34:45 +00:00
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2017-05-15 23:33:10 +00:00
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static inline struct spdk_iscsi_task *
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spdk_iscsi_task_from_scsi_task(struct spdk_scsi_task *task)
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{
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2018-07-05 22:04:43 +00:00
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return SPDK_CONTAINEROF(task, struct spdk_iscsi_task, scsi);
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2017-05-15 23:33:10 +00:00
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}
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2016-08-02 16:34:45 +00:00
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static inline struct spdk_iscsi_task *
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spdk_iscsi_task_get_primary(struct spdk_iscsi_task *task)
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{
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2018-01-04 21:03:34 +00:00
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if (task->parent) {
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return task->parent;
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} else {
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return task;
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}
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2016-08-02 16:34:45 +00:00
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}
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#endif /* SPDK_ISCSI_TASK_H */
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