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gerrit-public.fairphone.software / kernel / msm-4.9 / d3131de76b1b1a4d95f145846bd61f96e72f0411 / . / drivers / target / iscsi / iscsi_target_seq_pdu_list.h
blob: d5b153751a8d223c9edb21a01490748911a4756d [file] [log] [blame]
Nicholas Bellingere48354c2011-07-23 06:43:04 +0000[diff] [blame]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
44struct iscsi_build_list {
45 int data_direction;
46 int randomize;
47 int type;
48 int immediate_data_length;
49};
50
51struct 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
62struct 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
Andy Grover4334e492012-04-03 15:51:25 -0700[diff] [blame]81extern int iscsit_build_pdu_and_seq_lists(struct iscsi_cmd *, u32);
Nicholas Bellingere48354c2011-07-23 06:43:04 +0000[diff] [blame]82extern struct iscsi_pdu *iscsit_get_pdu_holder(struct iscsi_cmd *, u32, u32);
83extern struct iscsi_pdu *iscsit_get_pdu_holder_for_seq(struct iscsi_cmd *, struct iscsi_seq *);
84extern struct iscsi_seq *iscsit_get_seq_holder(struct iscsi_cmd *, u32, u32);
85
86#endif /* ISCSI_SEQ_AND_PDU_LIST_H */