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35#ifndef SCSI_SRP_H
36#define SCSI_SRP_H
37
38
39
40
41
42
43
44#include <linux/types.h>
45#include <scsi/scsi.h>
46
47enum {
48 SRP_LOGIN_REQ = 0x00,
49 SRP_TSK_MGMT = 0x01,
50 SRP_CMD = 0x02,
51 SRP_I_LOGOUT = 0x03,
52 SRP_LOGIN_RSP = 0xc0,
53 SRP_RSP = 0xc1,
54 SRP_LOGIN_REJ = 0xc2,
55 SRP_T_LOGOUT = 0x80,
56 SRP_CRED_REQ = 0x81,
57 SRP_AER_REQ = 0x82,
58 SRP_CRED_RSP = 0x41,
59 SRP_AER_RSP = 0x42
60};
61
62enum {
63 SRP_BUF_FORMAT_DIRECT = 1 << 1,
64 SRP_BUF_FORMAT_INDIRECT = 1 << 2
65};
66
67enum {
68 SRP_NO_DATA_DESC = 0,
69 SRP_DATA_DESC_DIRECT = 1,
70 SRP_DATA_DESC_INDIRECT = 2
71};
72
73enum {
74 SRP_TSK_ABORT_TASK = 0x01,
75 SRP_TSK_ABORT_TASK_SET = 0x02,
76 SRP_TSK_CLEAR_TASK_SET = 0x04,
77 SRP_TSK_LUN_RESET = 0x08,
78 SRP_TSK_CLEAR_ACA = 0x40
79};
80
81enum srp_login_rej_reason {
82 SRP_LOGIN_REJ_UNABLE_ESTABLISH_CHANNEL = 0x00010000,
83 SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES = 0x00010001,
84 SRP_LOGIN_REJ_REQ_IT_IU_LENGTH_TOO_LARGE = 0x00010002,
85 SRP_LOGIN_REJ_UNABLE_ASSOCIATE_CHANNEL = 0x00010003,
86 SRP_LOGIN_REJ_UNSUPPORTED_DESCRIPTOR_FMT = 0x00010004,
87 SRP_LOGIN_REJ_MULTI_CHANNEL_UNSUPPORTED = 0x00010005,
88 SRP_LOGIN_REJ_CHANNEL_LIMIT_REACHED = 0x00010006
89};
90
91enum {
92 SRP_REV10_IB_IO_CLASS = 0xff00,
93 SRP_REV16A_IB_IO_CLASS = 0x0100
94};
95
96struct srp_direct_buf {
97 __be64 va;
98 __be32 key;
99 __be32 len;
100};
101
102
103
104
105
106
107
108struct srp_indirect_buf {
109 struct srp_direct_buf table_desc;
110 __be32 len;
111 struct srp_direct_buf desc_list[0];
112} __attribute__((packed));
113
114enum {
115 SRP_MULTICHAN_SINGLE = 0,
116 SRP_MULTICHAN_MULTI = 1
117};
118
119struct srp_login_req {
120 u8 opcode;
121 u8 reserved1[7];
122 u64 tag;
123 __be32 req_it_iu_len;
124 u8 reserved2[4];
125 __be16 req_buf_fmt;
126 u8 req_flags;
127 u8 reserved3[5];
128 u8 initiator_port_id[16];
129 u8 target_port_id[16];
130};
131
132
133
134
135
136
137struct srp_login_rsp {
138 u8 opcode;
139 u8 reserved1[3];
140 __be32 req_lim_delta;
141 u64 tag;
142 __be32 max_it_iu_len;
143 __be32 max_ti_iu_len;
144 __be16 buf_fmt;
145 u8 rsp_flags;
146 u8 reserved2[25];
147} __attribute__((packed));
148
149struct srp_login_rej {
150 u8 opcode;
151 u8 reserved1[3];
152 __be32 reason;
153 u64 tag;
154 u8 reserved2[8];
155 __be16 buf_fmt;
156 u8 reserved3[6];
157};
158
159struct srp_i_logout {
160 u8 opcode;
161 u8 reserved[7];
162 u64 tag;
163};
164
165struct srp_t_logout {
166 u8 opcode;
167 u8 sol_not;
168 u8 reserved[2];
169 __be32 reason;
170 u64 tag;
171};
172
173
174
175
176
177struct srp_tsk_mgmt {
178 u8 opcode;
179 u8 sol_not;
180 u8 reserved1[6];
181 u64 tag;
182 u8 reserved2[4];
183 struct scsi_lun lun;
184 u8 reserved3[2];
185 u8 tsk_mgmt_func;
186 u8 reserved4;
187 u64 task_tag;
188 u8 reserved5[8];
189};
190
191
192
193
194
195struct srp_cmd {
196 u8 opcode;
197 u8 sol_not;
198 u8 reserved1[3];
199 u8 buf_fmt;
200 u8 data_out_desc_cnt;
201 u8 data_in_desc_cnt;
202 u64 tag;
203 u8 reserved2[4];
204 struct scsi_lun lun;
205 u8 reserved3;
206 u8 task_attr;
207 u8 reserved4;
208 u8 add_cdb_len;
209 u8 cdb[16];
210 u8 add_data[0];
211};
212
213enum {
214 SRP_RSP_FLAG_RSPVALID = 1 << 0,
215 SRP_RSP_FLAG_SNSVALID = 1 << 1,
216 SRP_RSP_FLAG_DOOVER = 1 << 2,
217 SRP_RSP_FLAG_DOUNDER = 1 << 3,
218 SRP_RSP_FLAG_DIOVER = 1 << 4,
219 SRP_RSP_FLAG_DIUNDER = 1 << 5
220};
221
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225
226
227struct srp_rsp {
228 u8 opcode;
229 u8 sol_not;
230 u8 reserved1[2];
231 __be32 req_lim_delta;
232 u64 tag;
233 u8 reserved2[2];
234 u8 flags;
235 u8 status;
236 __be32 data_out_res_cnt;
237 __be32 data_in_res_cnt;
238 __be32 sense_data_len;
239 __be32 resp_data_len;
240 u8 data[0];
241} __attribute__((packed));
242
243struct srp_cred_req {
244 u8 opcode;
245 u8 sol_not;
246 u8 reserved[2];
247 __be32 req_lim_delta;
248 u64 tag;
249};
250
251struct srp_cred_rsp {
252 u8 opcode;
253 u8 reserved[7];
254 u64 tag;
255};
256
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260
261
262struct srp_aer_req {
263 u8 opcode;
264 u8 sol_not;
265 u8 reserved[2];
266 __be32 req_lim_delta;
267 u64 tag;
268 u32 reserved2;
269 struct scsi_lun lun;
270 __be32 sense_data_len;
271 u32 reserved3;
272 u8 sense_data[0];
273} __attribute__((packed));
274
275struct srp_aer_rsp {
276 u8 opcode;
277 u8 reserved[7];
278 u64 tag;
279};
280
281#endif
282