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Linux kernel mirror (for testing)
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linux
1#ifndef ISCSI_SEQ_AND_PDU_LIST_H
2#define ISCSI_SEQ_AND_PDU_LIST_H
3
4#include <linux/types.h>
5#include <linux/cache.h>
6
7/* struct iscsi_pdu->status */
8#define DATAOUT_PDU_SENT 1
9
10/* struct iscsi_seq->type */
11#define SEQTYPE_IMMEDIATE 1
12#define SEQTYPE_UNSOLICITED 2
13#define SEQTYPE_NORMAL 3
14
15/* struct iscsi_seq->status */
16#define DATAOUT_SEQUENCE_GOT_R2T 1
17#define DATAOUT_SEQUENCE_WITHIN_COMMAND_RECOVERY 2
18#define DATAOUT_SEQUENCE_COMPLETE 3
19
20/* iscsi_determine_counts_for_list() type */
21#define PDULIST_NORMAL 1
22#define PDULIST_IMMEDIATE 2
23#define PDULIST_UNSOLICITED 3
24#define PDULIST_IMMEDIATE_AND_UNSOLICITED 4
25
26/* struct iscsi_pdu->type */
27#define PDUTYPE_IMMEDIATE 1
28#define PDUTYPE_UNSOLICITED 2
29#define PDUTYPE_NORMAL 3
30
31/* struct iscsi_pdu->status */
32#define ISCSI_PDU_NOT_RECEIVED 0
33#define ISCSI_PDU_RECEIVED_OK 1
34#define ISCSI_PDU_CRC_FAILED 2
35#define ISCSI_PDU_TIMED_OUT 3
36
37/* struct iscsi_build_list->randomize */
38#define RANDOM_DATAIN_PDU_OFFSETS 0x01
39#define RANDOM_DATAIN_SEQ_OFFSETS 0x02
40#define RANDOM_DATAOUT_PDU_OFFSETS 0x04
41#define RANDOM_R2T_OFFSETS 0x08
42
43/* struct iscsi_build_list->data_direction */
44#define ISCSI_PDU_READ 0x01
45#define ISCSI_PDU_WRITE 0x02
46
47struct iscsi_build_list {
48 int data_direction;
49 int randomize;
50 int type;
51 int immediate_data_length;
52};
53
54struct iscsi_pdu {
55 int status;
56 int type;
57 u8 flags;
58 u32 data_sn;
59 u32 length;
60 u32 offset;
61 u32 pdu_send_order;
62 u32 seq_no;
63} ____cacheline_aligned;
64
65struct iscsi_seq {
66 int sent;
67 int status;
68 int type;
69 u32 data_sn;
70 u32 first_datasn;
71 u32 last_datasn;
72 u32 next_burst_len;
73 u32 pdu_start;
74 u32 pdu_count;
75 u32 offset;
76 u32 orig_offset;
77 u32 pdu_send_order;
78 u32 r2t_sn;
79 u32 seq_send_order;
80 u32 seq_no;
81 u32 xfer_len;
82} ____cacheline_aligned;
83
84struct iscsi_cmd;
85
86extern int iscsit_build_pdu_and_seq_lists(struct iscsi_cmd *, u32);
87extern struct iscsi_pdu *iscsit_get_pdu_holder(struct iscsi_cmd *, u32, u32);
88extern struct iscsi_pdu *iscsit_get_pdu_holder_for_seq(struct iscsi_cmd *, struct iscsi_seq *);
89extern struct iscsi_seq *iscsit_get_seq_holder(struct iscsi_cmd *, u32, u32);
90
91#endif /* ISCSI_SEQ_AND_PDU_LIST_H */