1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _ISER_XFER_H
#define _ISER_XFER_H
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/types.h>
#include <sys/ib/ibtl/ibti.h>
#include <sys/ib/ibtl/ibtl_types.h>
#include <sys/iscsi_protocol.h>
/*
* iser_xfer.h
* Definitions and functions related to data transfer across the RC channel
* This includes the posting of the Hello Message, the HelloReply Message, the
* RC Send Message for the iSCSI Control PDU.
*/
/*
* iser_private_data_s contains parameters relating to the iSER connection and
* IB options support status. This data conforms to the 'iSER CM REQ Message
* Private Data Format' from the Annex A12 - Support for iSCSI Extensions for
* RDMA.
*/
#pragma pack(1)
typedef struct iser_private_data_s {
uint8_t ip_pvt[IBT_IP_HDR_PRIV_DATA_SZ];
#if defined(_BIT_FIELDS_LTOH)
uint32_t rsvd1 :30,
sie :1,
zbvae :1;
#elif defined(_BIT_FIELDS_HTOL)
uint32_t zbvae :1,
sie :1,
rsvd1 :30;
#else
#error One of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL must be defined
#endif /* _BIT_FIELDS_LTOH */
uint8_t rsvd2[52];
} iser_private_data_t;
/* iSER Message Opcodes */
#define ISER_OPCODE_CTRL_TYPE_PDU 1
#define ISER_OPCODE_HELLO_MSG 2
#define ISER_OPCODE_HELLOREPLY_MSG 3
/*
* When ZBVA is not supported, both the initiator and the target shall use the
* expanded iSER header as defined in the IB Spec Table 540 for iSCSI control-
* type PDUs in the connection
*/
typedef struct iser_ctrl_hdr_s {
#if defined(_BIT_FIELDS_LTOH)
uint8_t rsvd1: 2,
rsv_flag: 1, /* RStag valid bit */
wsv_flag: 1, /* WStag valid bit */
opcode: 4; /* iSER opcode */
uint8_t rsvd[3];
#elif defined(_BIT_FIELDS_HTOL)
uint8_t opcode: 4,
wsv_flag: 1,
rsv_flag: 1,
rsvd1: 2;
uint8_t rsvd[3];
#else
#error One of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL must be defined
#endif /* _BIT_FIELDS_LTOH */
uint32_t wstag; /* IB R-key for SCSI Write */
uint64_t wva; /* IB VA for SCSI Write */
uint32_t rstag; /* IB R-key for SCSI Read */
uint64_t rva; /* IB VA for SCSI Read */
} iser_ctrl_hdr_t;
/* iSER Header Format for the iSER Hello Message */
typedef struct iser_hello_hdr_s {
#if defined(_BIT_FIELDS_LTOH)
uint8_t rsvd1 : 4,
opcode : 4;
uint8_t minver : 4,
maxver : 4;
#elif defined(_BIT_FIELDS_HTOL)
uint8_t opcode : 4,
rsvd1 : 4;
uint8_t maxver : 4,
minver : 4;
#else
#error One of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL must be defined
#endif /* _BIT_FIELDS_LTOH */
uint16_t iser_ird;
uint32_t rsvd2[2];
} iser_hello_hdr_t;
/* iSER Header Format for the iSER HelloReply Message */
typedef struct iser_helloreply_hdr_s {
#if defined(_BIT_FIELDS_LTOH)
uint8_t flag : 1,
rsvd1 : 3,
opcode : 4;
uint8_t curver : 4,
maxver : 4;
#elif defined(_BIT_FIELDS_HTOL)
uint8_t opcode : 4,
rsvd1 : 3,
flag : 1;
uint8_t maxver : 4,
curver : 4;
#else
#error One of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL must be defined
#endif /* _BIT_FIELDS_LTOH */
uint16_t iser_ord;
uint32_t rsvd2[2];
} iser_helloreply_hdr_t;
#pragma pack()
struct iser_state_s;
int iser_xfer_hello_msg(iser_chan_t *chan);
int iser_xfer_helloreply_msg(iser_chan_t *chan);
int iser_xfer_ctrlpdu(iser_chan_t *chan, idm_pdu_t *pdu);
int iser_xfer_buf_to_ini(idm_task_t *idt, idm_buf_t *buf);
int iser_xfer_buf_from_ini(idm_task_t *idt, idm_buf_t *buf);
#ifdef __cplusplus
}
#endif
#endif /* _ISER_XFER_H */
|
