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1 | 6e270446 | Ben Herrenschmidt | /*
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2 | 6e270446 | Ben Herrenschmidt | * Copyright (c) 2005 Cisco Systems. All rights reserved.
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3 | 6e270446 | Ben Herrenschmidt | *
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4 | 6e270446 | Ben Herrenschmidt | * This software is available to you under a choice of one of two
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5 | 6e270446 | Ben Herrenschmidt | * licenses. You may choose to be licensed under the terms of the GNU
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6 | 6e270446 | Ben Herrenschmidt | * General Public License (GPL) Version 2, available from the file
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7 | 6e270446 | Ben Herrenschmidt | * COPYING in the main directory of this source tree, or the
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8 | 6e270446 | Ben Herrenschmidt | * OpenIB.org BSD license below:
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9 | 6e270446 | Ben Herrenschmidt | *
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10 | 6e270446 | Ben Herrenschmidt | * Redistribution and use in source and binary forms, with or
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11 | 6e270446 | Ben Herrenschmidt | * without modification, are permitted provided that the following
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12 | 6e270446 | Ben Herrenschmidt | * conditions are met:
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13 | 6e270446 | Ben Herrenschmidt | *
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14 | 6e270446 | Ben Herrenschmidt | * - Redistributions of source code must retain the above
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15 | 6e270446 | Ben Herrenschmidt | * copyright notice, this list of conditions and the following
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16 | 6e270446 | Ben Herrenschmidt | * disclaimer.
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17 | 6e270446 | Ben Herrenschmidt | *
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18 | 6e270446 | Ben Herrenschmidt | * - Redistributions in binary form must reproduce the above
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19 | 6e270446 | Ben Herrenschmidt | * copyright notice, this list of conditions and the following
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20 | 6e270446 | Ben Herrenschmidt | * disclaimer in the documentation and/or other materials
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21 | 6e270446 | Ben Herrenschmidt | * provided with the distribution.
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22 | 6e270446 | Ben Herrenschmidt | *
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23 | 6e270446 | Ben Herrenschmidt | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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24 | 6e270446 | Ben Herrenschmidt | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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25 | 6e270446 | Ben Herrenschmidt | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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26 | 6e270446 | Ben Herrenschmidt | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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27 | 6e270446 | Ben Herrenschmidt | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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28 | 6e270446 | Ben Herrenschmidt | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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29 | 6e270446 | Ben Herrenschmidt | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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30 | 6e270446 | Ben Herrenschmidt | * SOFTWARE.
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31 | 6e270446 | Ben Herrenschmidt | *
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32 | 6e270446 | Ben Herrenschmidt | */
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33 | 6e270446 | Ben Herrenschmidt | |
34 | 6e270446 | Ben Herrenschmidt | #ifndef SCSI_SRP_H
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35 | 6e270446 | Ben Herrenschmidt | #define SCSI_SRP_H
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36 | 6e270446 | Ben Herrenschmidt | |
37 | 6e270446 | Ben Herrenschmidt | /*
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38 | 6e270446 | Ben Herrenschmidt | * Structures and constants for the SCSI RDMA Protocol (SRP) as
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39 | 6e270446 | Ben Herrenschmidt | * defined by the INCITS T10 committee. This file was written using
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40 | 6e270446 | Ben Herrenschmidt | * draft Revision 16a of the SRP standard.
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41 | 6e270446 | Ben Herrenschmidt | */
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42 | 6e270446 | Ben Herrenschmidt | |
43 | 6e270446 | Ben Herrenschmidt | enum {
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44 | 6e270446 | Ben Herrenschmidt | |
45 | 6e270446 | Ben Herrenschmidt | SRP_LOGIN_REQ = 0x00,
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46 | 6e270446 | Ben Herrenschmidt | SRP_TSK_MGMT = 0x01,
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47 | 6e270446 | Ben Herrenschmidt | SRP_CMD = 0x02,
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48 | 6e270446 | Ben Herrenschmidt | SRP_I_LOGOUT = 0x03,
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49 | 6e270446 | Ben Herrenschmidt | SRP_LOGIN_RSP = 0xc0,
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50 | 6e270446 | Ben Herrenschmidt | SRP_RSP = 0xc1,
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51 | 6e270446 | Ben Herrenschmidt | SRP_LOGIN_REJ = 0xc2,
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52 | 6e270446 | Ben Herrenschmidt | SRP_T_LOGOUT = 0x80,
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53 | 6e270446 | Ben Herrenschmidt | SRP_CRED_REQ = 0x81,
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54 | 6e270446 | Ben Herrenschmidt | SRP_AER_REQ = 0x82,
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55 | 6e270446 | Ben Herrenschmidt | SRP_CRED_RSP = 0x41,
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56 | 6e270446 | Ben Herrenschmidt | SRP_AER_RSP = 0x42
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57 | 6e270446 | Ben Herrenschmidt | }; |
58 | 6e270446 | Ben Herrenschmidt | |
59 | 6e270446 | Ben Herrenschmidt | enum {
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60 | 6e270446 | Ben Herrenschmidt | SRP_BUF_FORMAT_DIRECT = 1 << 1, |
61 | 6e270446 | Ben Herrenschmidt | SRP_BUF_FORMAT_INDIRECT = 1 << 2 |
62 | 6e270446 | Ben Herrenschmidt | }; |
63 | 6e270446 | Ben Herrenschmidt | |
64 | 6e270446 | Ben Herrenschmidt | enum {
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65 | 6e270446 | Ben Herrenschmidt | SRP_NO_DATA_DESC = 0,
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66 | 6e270446 | Ben Herrenschmidt | SRP_DATA_DESC_DIRECT = 1,
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67 | 6e270446 | Ben Herrenschmidt | SRP_DATA_DESC_INDIRECT = 2
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68 | 6e270446 | Ben Herrenschmidt | }; |
69 | 6e270446 | Ben Herrenschmidt | |
70 | 6e270446 | Ben Herrenschmidt | enum {
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71 | 6e270446 | Ben Herrenschmidt | SRP_TSK_ABORT_TASK = 0x01,
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72 | 6e270446 | Ben Herrenschmidt | SRP_TSK_ABORT_TASK_SET = 0x02,
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73 | 6e270446 | Ben Herrenschmidt | SRP_TSK_CLEAR_TASK_SET = 0x04,
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74 | 6e270446 | Ben Herrenschmidt | SRP_TSK_LUN_RESET = 0x08,
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75 | 6e270446 | Ben Herrenschmidt | SRP_TSK_CLEAR_ACA = 0x40
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76 | 6e270446 | Ben Herrenschmidt | }; |
77 | 6e270446 | Ben Herrenschmidt | |
78 | 6e270446 | Ben Herrenschmidt | enum srp_login_rej_reason {
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79 | 6e270446 | Ben Herrenschmidt | SRP_LOGIN_REJ_UNABLE_ESTABLISH_CHANNEL = 0x00010000,
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80 | 6e270446 | Ben Herrenschmidt | SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES = 0x00010001,
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81 | 6e270446 | Ben Herrenschmidt | SRP_LOGIN_REJ_REQ_IT_IU_LENGTH_TOO_LARGE = 0x00010002,
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82 | 6e270446 | Ben Herrenschmidt | SRP_LOGIN_REJ_UNABLE_ASSOCIATE_CHANNEL = 0x00010003,
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83 | 6e270446 | Ben Herrenschmidt | SRP_LOGIN_REJ_UNSUPPORTED_DESCRIPTOR_FMT = 0x00010004,
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84 | 6e270446 | Ben Herrenschmidt | SRP_LOGIN_REJ_MULTI_CHANNEL_UNSUPPORTED = 0x00010005,
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85 | 6e270446 | Ben Herrenschmidt | SRP_LOGIN_REJ_CHANNEL_LIMIT_REACHED = 0x00010006
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86 | 6e270446 | Ben Herrenschmidt | }; |
87 | 6e270446 | Ben Herrenschmidt | |
88 | 6e270446 | Ben Herrenschmidt | enum {
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89 | 6e270446 | Ben Herrenschmidt | SRP_REV10_IB_IO_CLASS = 0xff00,
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90 | 6e270446 | Ben Herrenschmidt | SRP_REV16A_IB_IO_CLASS = 0x0100
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91 | 6e270446 | Ben Herrenschmidt | }; |
92 | 6e270446 | Ben Herrenschmidt | |
93 | 6e270446 | Ben Herrenschmidt | struct srp_direct_buf {
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94 | 6e270446 | Ben Herrenschmidt | uint64_t va; |
95 | 6e270446 | Ben Herrenschmidt | uint32_t key; |
96 | 6e270446 | Ben Herrenschmidt | uint32_t len; |
97 | 6e270446 | Ben Herrenschmidt | }; |
98 | 6e270446 | Ben Herrenschmidt | |
99 | 6e270446 | Ben Herrenschmidt | /*
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100 | 6e270446 | Ben Herrenschmidt | * We need the packed attribute because the SRP spec puts the list of
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101 | 6e270446 | Ben Herrenschmidt | * descriptors at an offset of 20, which is not aligned to the size of
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102 | 6e270446 | Ben Herrenschmidt | * struct srp_direct_buf. The whole structure must be packed to avoid
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103 | 6e270446 | Ben Herrenschmidt | * having the 20-byte structure padded to 24 bytes on 64-bit architectures.
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104 | 6e270446 | Ben Herrenschmidt | */
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105 | 6e270446 | Ben Herrenschmidt | struct srp_indirect_buf {
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106 | 6e270446 | Ben Herrenschmidt | struct srp_direct_buf table_desc;
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107 | 6e270446 | Ben Herrenschmidt | uint32_t len; |
108 | 6e270446 | Ben Herrenschmidt | struct srp_direct_buf desc_list[0]; |
109 | 6e270446 | Ben Herrenschmidt | } __attribute__((packed)); |
110 | 6e270446 | Ben Herrenschmidt | |
111 | 6e270446 | Ben Herrenschmidt | enum {
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112 | 6e270446 | Ben Herrenschmidt | SRP_MULTICHAN_SINGLE = 0,
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113 | 6e270446 | Ben Herrenschmidt | SRP_MULTICHAN_MULTI = 1
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114 | 6e270446 | Ben Herrenschmidt | }; |
115 | 6e270446 | Ben Herrenschmidt | |
116 | 6e270446 | Ben Herrenschmidt | struct srp_login_req {
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117 | 6e270446 | Ben Herrenschmidt | uint8_t opcode; |
118 | 6e270446 | Ben Herrenschmidt | uint8_t reserved1[7];
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119 | 6e270446 | Ben Herrenschmidt | uint64_t tag; |
120 | 6e270446 | Ben Herrenschmidt | uint32_t req_it_iu_len; |
121 | 6e270446 | Ben Herrenschmidt | uint8_t reserved2[4];
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122 | 6e270446 | Ben Herrenschmidt | uint16_t req_buf_fmt; |
123 | 6e270446 | Ben Herrenschmidt | uint8_t req_flags; |
124 | 6e270446 | Ben Herrenschmidt | uint8_t reserved3[5];
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125 | 6e270446 | Ben Herrenschmidt | uint8_t initiator_port_id[16];
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126 | 6e270446 | Ben Herrenschmidt | uint8_t target_port_id[16];
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127 | 6e270446 | Ben Herrenschmidt | }; |
128 | 6e270446 | Ben Herrenschmidt | |
129 | 6e270446 | Ben Herrenschmidt | /*
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130 | 6e270446 | Ben Herrenschmidt | * The SRP spec defines the size of the LOGIN_RSP structure to be 52
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131 | 6e270446 | Ben Herrenschmidt | * bytes, so it needs to be packed to avoid having it padded to 56
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132 | 6e270446 | Ben Herrenschmidt | * bytes on 64-bit architectures.
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133 | 6e270446 | Ben Herrenschmidt | */
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134 | 6e270446 | Ben Herrenschmidt | struct srp_login_rsp {
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135 | 6e270446 | Ben Herrenschmidt | uint8_t opcode; |
136 | 6e270446 | Ben Herrenschmidt | uint8_t reserved1[3];
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137 | 6e270446 | Ben Herrenschmidt | uint32_t req_lim_delta; |
138 | 6e270446 | Ben Herrenschmidt | uint64_t tag; |
139 | 6e270446 | Ben Herrenschmidt | uint32_t max_it_iu_len; |
140 | 6e270446 | Ben Herrenschmidt | uint32_t max_ti_iu_len; |
141 | 6e270446 | Ben Herrenschmidt | uint16_t buf_fmt; |
142 | 6e270446 | Ben Herrenschmidt | uint8_t rsp_flags; |
143 | 6e270446 | Ben Herrenschmidt | uint8_t reserved2[25];
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144 | 6e270446 | Ben Herrenschmidt | } __attribute__((packed)); |
145 | 6e270446 | Ben Herrenschmidt | |
146 | 6e270446 | Ben Herrenschmidt | struct srp_login_rej {
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147 | 6e270446 | Ben Herrenschmidt | uint8_t opcode; |
148 | 6e270446 | Ben Herrenschmidt | uint8_t reserved1[3];
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149 | 6e270446 | Ben Herrenschmidt | uint32_t reason; |
150 | 6e270446 | Ben Herrenschmidt | uint64_t tag; |
151 | 6e270446 | Ben Herrenschmidt | uint8_t reserved2[8];
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152 | 6e270446 | Ben Herrenschmidt | uint16_t buf_fmt; |
153 | 6e270446 | Ben Herrenschmidt | uint8_t reserved3[6];
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154 | 6e270446 | Ben Herrenschmidt | }; |
155 | 6e270446 | Ben Herrenschmidt | |
156 | 6e270446 | Ben Herrenschmidt | struct srp_i_logout {
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157 | 6e270446 | Ben Herrenschmidt | uint8_t opcode; |
158 | 6e270446 | Ben Herrenschmidt | uint8_t reserved[7];
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159 | 6e270446 | Ben Herrenschmidt | uint64_t tag; |
160 | 6e270446 | Ben Herrenschmidt | }; |
161 | 6e270446 | Ben Herrenschmidt | |
162 | 6e270446 | Ben Herrenschmidt | struct srp_t_logout {
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163 | 6e270446 | Ben Herrenschmidt | uint8_t opcode; |
164 | 6e270446 | Ben Herrenschmidt | uint8_t sol_not; |
165 | 6e270446 | Ben Herrenschmidt | uint8_t reserved[2];
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166 | 6e270446 | Ben Herrenschmidt | uint32_t reason; |
167 | 6e270446 | Ben Herrenschmidt | uint64_t tag; |
168 | 6e270446 | Ben Herrenschmidt | }; |
169 | 6e270446 | Ben Herrenschmidt | |
170 | 6e270446 | Ben Herrenschmidt | /*
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171 | 6e270446 | Ben Herrenschmidt | * We need the packed attribute because the SRP spec only aligns the
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172 | 6e270446 | Ben Herrenschmidt | * 8-byte LUN field to 4 bytes.
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173 | 6e270446 | Ben Herrenschmidt | */
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174 | 6e270446 | Ben Herrenschmidt | struct srp_tsk_mgmt {
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175 | 6e270446 | Ben Herrenschmidt | uint8_t opcode; |
176 | 6e270446 | Ben Herrenschmidt | uint8_t sol_not; |
177 | 6e270446 | Ben Herrenschmidt | uint8_t reserved1[6];
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178 | 6e270446 | Ben Herrenschmidt | uint64_t tag; |
179 | 6e270446 | Ben Herrenschmidt | uint8_t reserved2[4];
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180 | 6e270446 | Ben Herrenschmidt | uint64_t lun __attribute__((packed)); |
181 | 6e270446 | Ben Herrenschmidt | uint8_t reserved3[2];
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182 | 6e270446 | Ben Herrenschmidt | uint8_t tsk_mgmt_func; |
183 | 6e270446 | Ben Herrenschmidt | uint8_t reserved4; |
184 | 6e270446 | Ben Herrenschmidt | uint64_t task_tag; |
185 | 6e270446 | Ben Herrenschmidt | uint8_t reserved5[8];
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186 | 6e270446 | Ben Herrenschmidt | }; |
187 | 6e270446 | Ben Herrenschmidt | |
188 | 6e270446 | Ben Herrenschmidt | /*
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189 | 6e270446 | Ben Herrenschmidt | * We need the packed attribute because the SRP spec only aligns the
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190 | 6e270446 | Ben Herrenschmidt | * 8-byte LUN field to 4 bytes.
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191 | 6e270446 | Ben Herrenschmidt | */
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192 | 6e270446 | Ben Herrenschmidt | struct srp_cmd {
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193 | 6e270446 | Ben Herrenschmidt | uint8_t opcode; |
194 | 6e270446 | Ben Herrenschmidt | uint8_t sol_not; |
195 | 6e270446 | Ben Herrenschmidt | uint8_t reserved1[3];
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196 | 6e270446 | Ben Herrenschmidt | uint8_t buf_fmt; |
197 | 6e270446 | Ben Herrenschmidt | uint8_t data_out_desc_cnt; |
198 | 6e270446 | Ben Herrenschmidt | uint8_t data_in_desc_cnt; |
199 | 6e270446 | Ben Herrenschmidt | uint64_t tag; |
200 | 6e270446 | Ben Herrenschmidt | uint8_t reserved2[4];
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201 | 6e270446 | Ben Herrenschmidt | uint64_t lun __attribute__((packed)); |
202 | 6e270446 | Ben Herrenschmidt | uint8_t reserved3; |
203 | 6e270446 | Ben Herrenschmidt | uint8_t task_attr; |
204 | 6e270446 | Ben Herrenschmidt | uint8_t reserved4; |
205 | 6e270446 | Ben Herrenschmidt | uint8_t add_cdb_len; |
206 | 6e270446 | Ben Herrenschmidt | uint8_t cdb[16];
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207 | 6e270446 | Ben Herrenschmidt | uint8_t add_data[0];
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208 | 6e270446 | Ben Herrenschmidt | }; |
209 | 6e270446 | Ben Herrenschmidt | |
210 | 6e270446 | Ben Herrenschmidt | enum {
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211 | 6e270446 | Ben Herrenschmidt | SRP_RSP_FLAG_RSPVALID = 1 << 0, |
212 | 6e270446 | Ben Herrenschmidt | SRP_RSP_FLAG_SNSVALID = 1 << 1, |
213 | 6e270446 | Ben Herrenschmidt | SRP_RSP_FLAG_DOOVER = 1 << 2, |
214 | 6e270446 | Ben Herrenschmidt | SRP_RSP_FLAG_DOUNDER = 1 << 3, |
215 | 6e270446 | Ben Herrenschmidt | SRP_RSP_FLAG_DIOVER = 1 << 4, |
216 | 6e270446 | Ben Herrenschmidt | SRP_RSP_FLAG_DIUNDER = 1 << 5 |
217 | 6e270446 | Ben Herrenschmidt | }; |
218 | 6e270446 | Ben Herrenschmidt | |
219 | 6e270446 | Ben Herrenschmidt | /*
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220 | 6e270446 | Ben Herrenschmidt | * The SRP spec defines the size of the RSP structure to be 36 bytes,
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221 | 6e270446 | Ben Herrenschmidt | * so it needs to be packed to avoid having it padded to 40 bytes on
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222 | 6e270446 | Ben Herrenschmidt | * 64-bit architectures.
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223 | 6e270446 | Ben Herrenschmidt | */
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224 | 6e270446 | Ben Herrenschmidt | struct srp_rsp {
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225 | 6e270446 | Ben Herrenschmidt | uint8_t opcode; |
226 | 6e270446 | Ben Herrenschmidt | uint8_t sol_not; |
227 | 6e270446 | Ben Herrenschmidt | uint8_t reserved1[2];
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228 | 6e270446 | Ben Herrenschmidt | uint32_t req_lim_delta; |
229 | 6e270446 | Ben Herrenschmidt | uint64_t tag; |
230 | 6e270446 | Ben Herrenschmidt | uint8_t reserved2[2];
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231 | 6e270446 | Ben Herrenschmidt | uint8_t flags; |
232 | 6e270446 | Ben Herrenschmidt | uint8_t status; |
233 | 6e270446 | Ben Herrenschmidt | uint32_t data_out_res_cnt; |
234 | 6e270446 | Ben Herrenschmidt | uint32_t data_in_res_cnt; |
235 | 6e270446 | Ben Herrenschmidt | uint32_t sense_data_len; |
236 | 6e270446 | Ben Herrenschmidt | uint32_t resp_data_len; |
237 | 6e270446 | Ben Herrenschmidt | uint8_t data[0];
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238 | 6e270446 | Ben Herrenschmidt | } __attribute__((packed)); |
239 | 6e270446 | Ben Herrenschmidt | |
240 | 6e270446 | Ben Herrenschmidt | #endif /* SCSI_SRP_H */ |