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android-kvm / linux / 1d227fcc72223cbdd34d0ce13541cbaab5e0d72f / . / drivers / target / iscsi / iscsi_target_seq_pdu_list.h
blob: 288298f9f1b4a33ecca66d5eda1e6bcfd4c03fb0 [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +0100[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0 */
Nicholas Bellingere48354c2011-07-23 06:43:04 +0000[diff] [blame]2#ifndef ISCSI_SEQ_AND_PDU_LIST_H
3#define ISCSI_SEQ_AND_PDU_LIST_H
4
Bart Van Assche8dcf07b2016-11-14 15:47:14 -0800[diff] [blame]5#include <linux/types.h>
6#include <linux/cache.h>
7
Nicholas Bellingere48354c2011-07-23 06:43:04 +0000[diff] [blame]8/* struct iscsi_pdu->status */
9#define DATAOUT_PDU_SENT 1
10
11/* struct iscsi_seq->type */
12#define SEQTYPE_IMMEDIATE 1
13#define SEQTYPE_UNSOLICITED 2
14#define SEQTYPE_NORMAL 3
15
16/* struct iscsi_seq->status */
17#define DATAOUT_SEQUENCE_GOT_R2T 1
18#define DATAOUT_SEQUENCE_WITHIN_COMMAND_RECOVERY 2
19#define DATAOUT_SEQUENCE_COMPLETE 3
20
21/* iscsi_determine_counts_for_list() type */
22#define PDULIST_NORMAL 1
23#define PDULIST_IMMEDIATE 2
24#define PDULIST_UNSOLICITED 3
25#define PDULIST_IMMEDIATE_AND_UNSOLICITED 4
26
27/* struct iscsi_pdu->type */
28#define PDUTYPE_IMMEDIATE 1
29#define PDUTYPE_UNSOLICITED 2
30#define PDUTYPE_NORMAL 3
31
32/* struct iscsi_pdu->status */
33#define ISCSI_PDU_NOT_RECEIVED 0
34#define ISCSI_PDU_RECEIVED_OK 1
35#define ISCSI_PDU_CRC_FAILED 2
36#define ISCSI_PDU_TIMED_OUT 3
37
38/* struct iscsi_build_list->randomize */
39#define RANDOM_DATAIN_PDU_OFFSETS 0x01
40#define RANDOM_DATAIN_SEQ_OFFSETS 0x02
41#define RANDOM_DATAOUT_PDU_OFFSETS 0x04
42#define RANDOM_R2T_OFFSETS 0x08
43
44/* struct iscsi_build_list->data_direction */
45#define ISCSI_PDU_READ 0x01
46#define ISCSI_PDU_WRITE 0x02
47
48struct iscsi_build_list {
49 int data_direction;
50 int randomize;
51 int type;
52 int immediate_data_length;
53};
54
55struct iscsi_pdu {
56 int status;
57 int type;
58 u8 flags;
59 u32 data_sn;
60 u32 length;
61 u32 offset;
62 u32 pdu_send_order;
63 u32 seq_no;
64} ____cacheline_aligned;
65
66struct iscsi_seq {
67 int sent;
68 int status;
69 int type;
70 u32 data_sn;
71 u32 first_datasn;
72 u32 last_datasn;
73 u32 next_burst_len;
74 u32 pdu_start;
75 u32 pdu_count;
76 u32 offset;
77 u32 orig_offset;
78 u32 pdu_send_order;
79 u32 r2t_sn;
80 u32 seq_send_order;
81 u32 seq_no;
82 u32 xfer_len;
83} ____cacheline_aligned;
84
Max Gurtovoy66cd9d42022-04-28 12:29:37 +0300[diff] [blame]85struct iscsit_cmd;
Bart Van Assche8dcf07b2016-11-14 15:47:14 -0800[diff] [blame]86
Max Gurtovoy66cd9d42022-04-28 12:29:37 +0300[diff] [blame]87extern int iscsit_build_pdu_and_seq_lists(struct iscsit_cmd *, u32);
88extern struct iscsi_pdu *iscsit_get_pdu_holder(struct iscsit_cmd *, u32, u32);
89extern struct iscsi_pdu *iscsit_get_pdu_holder_for_seq(struct iscsit_cmd *, struct iscsi_seq *);
90extern struct iscsi_seq *iscsit_get_seq_holder(struct iscsit_cmd *, u32, u32);
Nicholas Bellingere48354c2011-07-23 06:43:04 +0000[diff] [blame]91
92#endif /* ISCSI_SEQ_AND_PDU_LIST_H */