2 * Copyright (c) 2005 Cisco Systems. All rights reserved.
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8 * OpenIB.org BSD license below:
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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 */