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e48354ce NB |
1 | #ifndef ISCSI_SEQ_AND_PDU_LIST_H |
2 | #define ISCSI_SEQ_AND_PDU_LIST_H | |
3 | ||
4 | /* struct iscsi_pdu->status */ | |
5 | #define DATAOUT_PDU_SENT 1 | |
6 | ||
7 | /* struct iscsi_seq->type */ | |
8 | #define SEQTYPE_IMMEDIATE 1 | |
9 | #define SEQTYPE_UNSOLICITED 2 | |
10 | #define SEQTYPE_NORMAL 3 | |
11 | ||
12 | /* struct iscsi_seq->status */ | |
13 | #define DATAOUT_SEQUENCE_GOT_R2T 1 | |
14 | #define DATAOUT_SEQUENCE_WITHIN_COMMAND_RECOVERY 2 | |
15 | #define DATAOUT_SEQUENCE_COMPLETE 3 | |
16 | ||
17 | /* iscsi_determine_counts_for_list() type */ | |
18 | #define PDULIST_NORMAL 1 | |
19 | #define PDULIST_IMMEDIATE 2 | |
20 | #define PDULIST_UNSOLICITED 3 | |
21 | #define PDULIST_IMMEDIATE_AND_UNSOLICITED 4 | |
22 | ||
23 | /* struct iscsi_pdu->type */ | |
24 | #define PDUTYPE_IMMEDIATE 1 | |
25 | #define PDUTYPE_UNSOLICITED 2 | |
26 | #define PDUTYPE_NORMAL 3 | |
27 | ||
28 | /* struct iscsi_pdu->status */ | |
29 | #define ISCSI_PDU_NOT_RECEIVED 0 | |
30 | #define ISCSI_PDU_RECEIVED_OK 1 | |
31 | #define ISCSI_PDU_CRC_FAILED 2 | |
32 | #define ISCSI_PDU_TIMED_OUT 3 | |
33 | ||
34 | /* struct iscsi_build_list->randomize */ | |
35 | #define RANDOM_DATAIN_PDU_OFFSETS 0x01 | |
36 | #define RANDOM_DATAIN_SEQ_OFFSETS 0x02 | |
37 | #define RANDOM_DATAOUT_PDU_OFFSETS 0x04 | |
38 | #define RANDOM_R2T_OFFSETS 0x08 | |
39 | ||
40 | /* struct iscsi_build_list->data_direction */ | |
41 | #define ISCSI_PDU_READ 0x01 | |
42 | #define ISCSI_PDU_WRITE 0x02 | |
43 | ||
44 | struct iscsi_build_list { | |
45 | int data_direction; | |
46 | int randomize; | |
47 | int type; | |
48 | int immediate_data_length; | |
49 | }; | |
50 | ||
51 | struct iscsi_pdu { | |
52 | int status; | |
53 | int type; | |
54 | u8 flags; | |
55 | u32 data_sn; | |
56 | u32 length; | |
57 | u32 offset; | |
58 | u32 pdu_send_order; | |
59 | u32 seq_no; | |
60 | } ____cacheline_aligned; | |
61 | ||
62 | struct iscsi_seq { | |
63 | int sent; | |
64 | int status; | |
65 | int type; | |
66 | u32 data_sn; | |
67 | u32 first_datasn; | |
68 | u32 last_datasn; | |
69 | u32 next_burst_len; | |
70 | u32 pdu_start; | |
71 | u32 pdu_count; | |
72 | u32 offset; | |
73 | u32 orig_offset; | |
74 | u32 pdu_send_order; | |
75 | u32 r2t_sn; | |
76 | u32 seq_send_order; | |
77 | u32 seq_no; | |
78 | u32 xfer_len; | |
79 | } ____cacheline_aligned; | |
80 | ||
4334e49b | 81 | extern int iscsit_build_pdu_and_seq_lists(struct iscsi_cmd *, u32); |
e48354ce NB |
82 | extern struct iscsi_pdu *iscsit_get_pdu_holder(struct iscsi_cmd *, u32, u32); |
83 | extern struct iscsi_pdu *iscsit_get_pdu_holder_for_seq(struct iscsi_cmd *, struct iscsi_seq *); | |
84 | extern struct iscsi_seq *iscsit_get_seq_holder(struct iscsi_cmd *, u32, u32); | |
85 | ||
86 | #endif /* ISCSI_SEQ_AND_PDU_LIST_H */ |