d29384bf97
Change-Id: I28f3f4723a66f845eb478a6873d7aedb8f5409b8 Signed-off-by: Ben Walker <benjamin.walker@intel.com>
159 lines
4.5 KiB
C
159 lines
4.5 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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#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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struct spdk_iscsi_task {
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struct spdk_scsi_task scsi;
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struct spdk_iscsi_pdu *pdu;
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uint32_t outstanding_r2t;
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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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uint32_t r2t_datasn; /* record next datasn for a r2tsn*/
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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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TAILQ_ENTRY(spdk_iscsi_task) link;
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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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spdk_put_task(&task->scsi);
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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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return &spdk_iscsi_task_get_pdu(task)->bhs;
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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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return (scsi_req->read == 1);
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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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struct spdk_iscsi_task *spdk_iscsi_task_get(uint32_t *owner_task_ctr,
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struct spdk_iscsi_task *parent);
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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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struct spdk_scsi_task *scsi_task;
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struct spdk_scsi_task *scsi_primary_task;
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scsi_task = &task->scsi;
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scsi_primary_task = spdk_scsi_task_get_primary(scsi_task);
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return (struct spdk_iscsi_task *)scsi_primary_task;
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}
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#endif /* SPDK_ISCSI_TASK_H */
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