cregit-Linux how code gets into the kernel

Release 4.7 drivers/target/iscsi/iscsi_target_seq_pdu_list.h

#ifndef ISCSI_SEQ_AND_PDU_LIST_H

#define ISCSI_SEQ_AND_PDU_LIST_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;

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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