2 * Copyright (c) 2005 Cisco Systems. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
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11 * without modification, are permitted provided that the following
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23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
38 * Structures and constants for the SCSI RDMA Protocol (SRP) as
39 * defined by the INCITS T10 committee. This file was written using
40 * draft Revision 16a of the SRP standard.
60 SRP_BUF_FORMAT_DIRECT
= 1 << 1,
61 SRP_BUF_FORMAT_INDIRECT
= 1 << 2
66 SRP_DATA_DESC_DIRECT
= 1,
67 SRP_DATA_DESC_INDIRECT
= 2
71 SRP_TSK_ABORT_TASK
= 0x01,
72 SRP_TSK_ABORT_TASK_SET
= 0x02,
73 SRP_TSK_CLEAR_TASK_SET
= 0x04,
74 SRP_TSK_LUN_RESET
= 0x08,
75 SRP_TSK_CLEAR_ACA
= 0x40
78 enum srp_login_rej_reason
{
79 SRP_LOGIN_REJ_UNABLE_ESTABLISH_CHANNEL
= 0x00010000,
80 SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES
= 0x00010001,
81 SRP_LOGIN_REJ_REQ_IT_IU_LENGTH_TOO_LARGE
= 0x00010002,
82 SRP_LOGIN_REJ_UNABLE_ASSOCIATE_CHANNEL
= 0x00010003,
83 SRP_LOGIN_REJ_UNSUPPORTED_DESCRIPTOR_FMT
= 0x00010004,
84 SRP_LOGIN_REJ_MULTI_CHANNEL_UNSUPPORTED
= 0x00010005,
85 SRP_LOGIN_REJ_CHANNEL_LIMIT_REACHED
= 0x00010006
89 SRP_REV10_IB_IO_CLASS
= 0xff00,
90 SRP_REV16A_IB_IO_CLASS
= 0x0100
94 SRP_TSK_MGMT_COMPLETE
= 0x00,
95 SRP_TSK_MGMT_FIELDS_INVALID
= 0x02,
96 SRP_TSK_MGMT_NOT_SUPPORTED
= 0x04,
97 SRP_TSK_MGMT_FAILED
= 0x05
100 struct srp_direct_buf
{
107 * We need the packed attribute because the SRP spec puts the list of
108 * descriptors at an offset of 20, which is not aligned to the size of
109 * struct srp_direct_buf. The whole structure must be packed to avoid
110 * having the 20-byte structure padded to 24 bytes on 64-bit architectures.
112 struct srp_indirect_buf
{
113 struct srp_direct_buf table_desc
;
115 struct srp_direct_buf desc_list
[0];
119 SRP_MULTICHAN_SINGLE
= 0,
120 SRP_MULTICHAN_MULTI
= 1
123 struct srp_login_req
{
125 uint8_t reserved1
[7];
127 uint32_t req_it_iu_len
;
128 uint8_t reserved2
[4];
129 uint16_t req_buf_fmt
;
131 uint8_t reserved3
[5];
132 uint8_t initiator_port_id
[16];
133 uint8_t target_port_id
[16];
137 * The SRP spec defines the size of the LOGIN_RSP structure to be 52
138 * bytes, so it needs to be packed to avoid having it padded to 56
139 * bytes on 64-bit architectures.
141 struct srp_login_rsp
{
143 uint8_t reserved1
[3];
144 uint32_t req_lim_delta
;
146 uint32_t max_it_iu_len
;
147 uint32_t max_ti_iu_len
;
150 uint8_t reserved2
[25];
153 struct srp_login_rej
{
155 uint8_t reserved1
[3];
158 uint8_t reserved2
[8];
160 uint8_t reserved3
[6];
163 struct srp_i_logout
{
169 struct srp_t_logout
{
178 * We need the packed attribute because the SRP spec only aligns the
179 * 8-byte LUN field to 4 bytes.
181 struct srp_tsk_mgmt
{
184 uint8_t reserved1
[6];
186 uint8_t reserved2
[4];
188 uint8_t reserved3
[2];
189 uint8_t tsk_mgmt_func
;
192 uint8_t reserved5
[8];
196 * We need the packed attribute because the SRP spec only aligns the
197 * 8-byte LUN field to 4 bytes.
202 uint8_t reserved1
[3];
204 uint8_t data_out_desc_cnt
;
205 uint8_t data_in_desc_cnt
;
207 uint8_t reserved2
[4];
218 SRP_RSP_FLAG_RSPVALID
= 1 << 0,
219 SRP_RSP_FLAG_SNSVALID
= 1 << 1,
220 SRP_RSP_FLAG_DOOVER
= 1 << 2,
221 SRP_RSP_FLAG_DOUNDER
= 1 << 3,
222 SRP_RSP_FLAG_DIOVER
= 1 << 4,
223 SRP_RSP_FLAG_DIUNDER
= 1 << 5
227 * The SRP spec defines the size of the RSP structure to be 36 bytes,
228 * so it needs to be packed to avoid having it padded to 40 bytes on
229 * 64-bit architectures.
234 uint8_t reserved1
[2];
235 uint32_t req_lim_delta
;
237 uint8_t reserved2
[2];
240 uint32_t data_out_res_cnt
;
241 uint32_t data_in_res_cnt
;
242 uint32_t sense_data_len
;
243 uint32_t resp_data_len
;
247 #endif /* SCSI_SRP_H */