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