/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef ISCSI_SEQ_AND_PDU_LIST_H
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#define ISCSI_SEQ_AND_PDU_LIST_H
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#include <linux/types.h>
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#include <linux/cache.h>
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/* struct iscsi_pdu->status */
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#define DATAOUT_PDU_SENT 1
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/* struct iscsi_seq->type */
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#define SEQTYPE_IMMEDIATE 1
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#define SEQTYPE_UNSOLICITED 2
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#define SEQTYPE_NORMAL 3
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/* struct iscsi_seq->status */
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#define DATAOUT_SEQUENCE_GOT_R2T 1
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#define DATAOUT_SEQUENCE_WITHIN_COMMAND_RECOVERY 2
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#define DATAOUT_SEQUENCE_COMPLETE 3
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/* iscsi_determine_counts_for_list() type */
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#define PDULIST_NORMAL 1
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#define PDULIST_IMMEDIATE 2
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#define PDULIST_UNSOLICITED 3
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#define PDULIST_IMMEDIATE_AND_UNSOLICITED 4
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/* struct iscsi_pdu->type */
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#define PDUTYPE_IMMEDIATE 1
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#define PDUTYPE_UNSOLICITED 2
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#define PDUTYPE_NORMAL 3
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/* struct iscsi_pdu->status */
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#define ISCSI_PDU_NOT_RECEIVED 0
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#define ISCSI_PDU_RECEIVED_OK 1
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#define ISCSI_PDU_CRC_FAILED 2
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#define ISCSI_PDU_TIMED_OUT 3
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/* struct iscsi_build_list->randomize */
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#define RANDOM_DATAIN_PDU_OFFSETS 0x01
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#define RANDOM_DATAIN_SEQ_OFFSETS 0x02
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#define RANDOM_DATAOUT_PDU_OFFSETS 0x04
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#define RANDOM_R2T_OFFSETS 0x08
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/* struct iscsi_build_list->data_direction */
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#define ISCSI_PDU_READ 0x01
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#define ISCSI_PDU_WRITE 0x02
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struct iscsi_build_list {
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int data_direction;
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int randomize;
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int type;
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int immediate_data_length;
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};
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struct iscsi_pdu {
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int status;
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int type;
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u8 flags;
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u32 data_sn;
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u32 length;
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u32 offset;
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u32 pdu_send_order;
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u32 seq_no;
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} ____cacheline_aligned;
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struct iscsi_seq {
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int sent;
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int status;
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int type;
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u32 data_sn;
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u32 first_datasn;
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u32 last_datasn;
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u32 next_burst_len;
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u32 pdu_start;
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u32 pdu_count;
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u32 offset;
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u32 orig_offset;
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u32 pdu_send_order;
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u32 r2t_sn;
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u32 seq_send_order;
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u32 seq_no;
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u32 xfer_len;
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} ____cacheline_aligned;
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struct iscsi_cmd;
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extern int iscsit_build_pdu_and_seq_lists(struct iscsi_cmd *, u32);
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extern struct iscsi_pdu *iscsit_get_pdu_holder(struct iscsi_cmd *, u32, u32);
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extern struct iscsi_pdu *iscsit_get_pdu_holder_for_seq(struct iscsi_cmd *, struct iscsi_seq *);
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extern struct iscsi_seq *iscsit_get_seq_holder(struct iscsi_cmd *, u32, u32);
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#endif /* ISCSI_SEQ_AND_PDU_LIST_H */
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