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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
* Copyright (c) 2005 Cisco Systems. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* $Id$
*/
#ifndef SCSI_SRP_H
#define SCSI_SRP_H
/*
* Structures and constants for the SCSI RDMA Protocol (SRP) as
* defined by the INCITS T10 committee. This file was written using
* draft Revision 16a of the SRP standard.
*/
#include <linux/types.h>
enum {
SRP_LOGIN_REQ = 0x00,
SRP_TSK_MGMT = 0x01,
SRP_CMD = 0x02,
SRP_I_LOGOUT = 0x03,
SRP_LOGIN_RSP = 0xc0,
SRP_RSP = 0xc1,
SRP_LOGIN_REJ = 0xc2,
SRP_T_LOGOUT = 0x80,
SRP_CRED_REQ = 0x81,
SRP_AER_REQ = 0x82,
SRP_CRED_RSP = 0x41,
SRP_AER_RSP = 0x42
};
enum {
SRP_BUF_FORMAT_DIRECT = 1 << 1,
SRP_BUF_FORMAT_INDIRECT = 1 << 2
};
enum {
SRP_NO_DATA_DESC = 0,
SRP_DATA_DESC_DIRECT = 1,
SRP_DATA_DESC_INDIRECT = 2
};
enum {
SRP_TSK_ABORT_TASK = 0x01,
SRP_TSK_ABORT_TASK_SET = 0x02,
SRP_TSK_CLEAR_TASK_SET = 0x04,
SRP_TSK_LUN_RESET = 0x08,
SRP_TSK_CLEAR_ACA = 0x40
};
enum srp_login_rej_reason {
SRP_LOGIN_REJ_UNABLE_ESTABLISH_CHANNEL = 0x00010000,
SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES = 0x00010001,
SRP_LOGIN_REJ_REQ_IT_IU_LENGTH_TOO_LARGE = 0x00010002,
SRP_LOGIN_REJ_UNABLE_ASSOCIATE_CHANNEL = 0x00010003,
SRP_LOGIN_REJ_UNSUPPORTED_DESCRIPTOR_FMT = 0x00010004,
SRP_LOGIN_REJ_MULTI_CHANNEL_UNSUPPORTED = 0x00010005,
SRP_LOGIN_REJ_CHANNEL_LIMIT_REACHED = 0x00010006
};
struct srp_direct_buf {
__be64 va;
__be32 key;
__be32 len;
};
/*
* We need the packed attribute because the SRP spec puts the list of
* descriptors at an offset of 20, which is not aligned to the size
* of struct srp_direct_buf.
*/
struct srp_indirect_buf {
struct srp_direct_buf table_desc;
__be32 len;
struct srp_direct_buf desc_list[0] __attribute__((packed));
};
enum {
SRP_MULTICHAN_SINGLE = 0,
SRP_MULTICHAN_MULTI = 1
};
struct srp_login_req {
u8 opcode;
u8 reserved1[7];
u64 tag;
__be32 req_it_iu_len;
u8 reserved2[4];
__be16 req_buf_fmt;
u8 req_flags;
u8 reserved3[5];
u8 initiator_port_id[16];
u8 target_port_id[16];
};
struct srp_login_rsp {
u8 opcode;
u8 reserved1[3];
__be32 req_lim_delta;
u64 tag;
__be32 max_it_iu_len;
__be32 max_ti_iu_len;
__be16 buf_fmt;
u8 rsp_flags;
u8 reserved2[25];
};
struct srp_login_rej {
u8 opcode;
u8 reserved1[3];
__be32 reason;
u64 tag;
u8 reserved2[8];
__be16 buf_fmt;
u8 reserved3[6];
};
struct srp_i_logout {
u8 opcode;
u8 reserved[7];
u64 tag;
};
struct srp_t_logout {
u8 opcode;
u8 sol_not;
u8 reserved[2];
__be32 reason;
u64 tag;
};
/*
* We need the packed attribute because the SRP spec only aligns the
* 8-byte LUN field to 4 bytes.
*/
struct srp_tsk_mgmt {
u8 opcode;
u8 sol_not;
u8 reserved1[6];
u64 tag;
u8 reserved2[4];
__be64 lun __attribute__((packed));
u8 reserved3[2];
u8 tsk_mgmt_func;
u8 reserved4;
u64 task_tag;
u8 reserved5[8];
};
/*
* We need the packed attribute because the SRP spec only aligns the
* 8-byte LUN field to 4 bytes.
*/
struct srp_cmd {
u8 opcode;
u8 sol_not;
u8 reserved1[3];
u8 buf_fmt;
u8 data_out_desc_cnt;
u8 data_in_desc_cnt;
u64 tag;
u8 reserved2[4];
__be64 lun __attribute__((packed));
u8 reserved3;
u8 task_attr;
u8 reserved4;
u8 add_cdb_len;
u8 cdb[16];
u8 add_data[0];
};
enum {
SRP_RSP_FLAG_RSPVALID = 1 << 0,
SRP_RSP_FLAG_SNSVALID = 1 << 1,
SRP_RSP_FLAG_DOOVER = 1 << 2,
SRP_RSP_FLAG_DOUNDER = 1 << 3,
SRP_RSP_FLAG_DIOVER = 1 << 4,
SRP_RSP_FLAG_DIUNDER = 1 << 5
};
struct srp_rsp {
u8 opcode;
u8 sol_not;
u8 reserved1[2];
__be32 req_lim_delta;
u64 tag;
u8 reserved2[2];
u8 flags;
u8 status;
__be32 data_out_res_cnt;
__be32 data_in_res_cnt;
__be32 sense_data_len;
__be32 resp_data_len;
u8 data[0];
};
#endif /* SCSI_SRP_H */
|
