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1 | /* |
2 | * Copyright (c) 2004 Topspin Corporation. All rights reserved. |
3 | * |
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: |
9 | * |
10 | * Redistribution and use in source and binary forms, with or |
11 | * without modification, are permitted provided that the following |
12 | * conditions are met: |
13 | * |
14 | * - Redistributions of source code must retain the above |
15 | * copyright notice, this list of conditions and the following |
16 | * disclaimer. |
17 | * |
18 | * - Redistributions in binary form must reproduce the above |
19 | * copyright notice, this list of conditions and the following |
20 | * disclaimer in the documentation and/or other materials |
21 | * provided with the distribution. |
22 | * |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
30 | * SOFTWARE. |
31 | */ |
32 | |
33 | #ifndef IB_PACK_H |
34 | #define IB_PACK_H |
35 | |
36 | #include <rdma/ib_verbs.h> |
37 | |
38 | enum { |
39 | IB_LRH_BYTES = 8, |
40 | IB_ETH_BYTES = 14, |
41 | IB_VLAN_BYTES = 4, |
42 | IB_GRH_BYTES = 40, |
43 | IB_BTH_BYTES = 12, |
44 | IB_DETH_BYTES = 8 |
45 | }; |
46 | |
47 | struct ib_field { |
48 | size_t struct_offset_bytes; |
49 | size_t struct_size_bytes; |
50 | int offset_words; |
51 | int offset_bits; |
52 | int size_bits; |
53 | char *field_name; |
54 | }; |
55 | |
56 | #define RESERVED \ |
57 | .field_name = "reserved" |
58 | |
59 | /* |
60 | * This macro cleans up the definitions of constants for BTH opcodes. |
61 | * It is used to define constants such as IB_OPCODE_UD_SEND_ONLY, |
62 | * which becomes IB_OPCODE_UD + IB_OPCODE_SEND_ONLY, and this gives |
63 | * the correct value. |
64 | * |
65 | * In short, user code should use the constants defined using the |
66 | * macro rather than worrying about adding together other constants. |
67 | */ |
68 | #define IB_OPCODE(transport, op) \ |
69 | IB_OPCODE_ ## transport ## _ ## op = \ |
70 | IB_OPCODE_ ## transport + IB_OPCODE_ ## op |
71 | |
72 | enum { |
73 | /* transport types -- just used to define real constants */ |
74 | IB_OPCODE_RC = 0x00, |
75 | IB_OPCODE_UC = 0x20, |
76 | IB_OPCODE_RD = 0x40, |
77 | IB_OPCODE_UD = 0x60, |
78 | |
79 | /* operations -- just used to define real constants */ |
80 | IB_OPCODE_SEND_FIRST = 0x00, |
81 | IB_OPCODE_SEND_MIDDLE = 0x01, |
82 | IB_OPCODE_SEND_LAST = 0x02, |
83 | IB_OPCODE_SEND_LAST_WITH_IMMEDIATE = 0x03, |
84 | IB_OPCODE_SEND_ONLY = 0x04, |
85 | IB_OPCODE_SEND_ONLY_WITH_IMMEDIATE = 0x05, |
86 | IB_OPCODE_RDMA_WRITE_FIRST = 0x06, |
87 | IB_OPCODE_RDMA_WRITE_MIDDLE = 0x07, |
88 | IB_OPCODE_RDMA_WRITE_LAST = 0x08, |
89 | IB_OPCODE_RDMA_WRITE_LAST_WITH_IMMEDIATE = 0x09, |
90 | IB_OPCODE_RDMA_WRITE_ONLY = 0x0a, |
91 | IB_OPCODE_RDMA_WRITE_ONLY_WITH_IMMEDIATE = 0x0b, |
92 | IB_OPCODE_RDMA_READ_REQUEST = 0x0c, |
93 | IB_OPCODE_RDMA_READ_RESPONSE_FIRST = 0x0d, |
94 | IB_OPCODE_RDMA_READ_RESPONSE_MIDDLE = 0x0e, |
95 | IB_OPCODE_RDMA_READ_RESPONSE_LAST = 0x0f, |
96 | IB_OPCODE_RDMA_READ_RESPONSE_ONLY = 0x10, |
97 | IB_OPCODE_ACKNOWLEDGE = 0x11, |
98 | IB_OPCODE_ATOMIC_ACKNOWLEDGE = 0x12, |
99 | IB_OPCODE_COMPARE_SWAP = 0x13, |
100 | IB_OPCODE_FETCH_ADD = 0x14, |
101 | |
102 | /* real constants follow -- see comment about above IB_OPCODE() |
103 | macro for more details */ |
104 | |
105 | /* RC */ |
106 | IB_OPCODE(RC, SEND_FIRST), |
107 | IB_OPCODE(RC, SEND_MIDDLE), |
108 | IB_OPCODE(RC, SEND_LAST), |
109 | IB_OPCODE(RC, SEND_LAST_WITH_IMMEDIATE), |
110 | IB_OPCODE(RC, SEND_ONLY), |
111 | IB_OPCODE(RC, SEND_ONLY_WITH_IMMEDIATE), |
112 | IB_OPCODE(RC, RDMA_WRITE_FIRST), |
113 | IB_OPCODE(RC, RDMA_WRITE_MIDDLE), |
114 | IB_OPCODE(RC, RDMA_WRITE_LAST), |
115 | IB_OPCODE(RC, RDMA_WRITE_LAST_WITH_IMMEDIATE), |
116 | IB_OPCODE(RC, RDMA_WRITE_ONLY), |
117 | IB_OPCODE(RC, RDMA_WRITE_ONLY_WITH_IMMEDIATE), |
118 | IB_OPCODE(RC, RDMA_READ_REQUEST), |
119 | IB_OPCODE(RC, RDMA_READ_RESPONSE_FIRST), |
120 | IB_OPCODE(RC, RDMA_READ_RESPONSE_MIDDLE), |
121 | IB_OPCODE(RC, RDMA_READ_RESPONSE_LAST), |
122 | IB_OPCODE(RC, RDMA_READ_RESPONSE_ONLY), |
123 | IB_OPCODE(RC, ACKNOWLEDGE), |
124 | IB_OPCODE(RC, ATOMIC_ACKNOWLEDGE), |
125 | IB_OPCODE(RC, COMPARE_SWAP), |
126 | IB_OPCODE(RC, FETCH_ADD), |
127 | |
128 | /* UC */ |
129 | IB_OPCODE(UC, SEND_FIRST), |
130 | IB_OPCODE(UC, SEND_MIDDLE), |
131 | IB_OPCODE(UC, SEND_LAST), |
132 | IB_OPCODE(UC, SEND_LAST_WITH_IMMEDIATE), |
133 | IB_OPCODE(UC, SEND_ONLY), |
134 | IB_OPCODE(UC, SEND_ONLY_WITH_IMMEDIATE), |
135 | IB_OPCODE(UC, RDMA_WRITE_FIRST), |
136 | IB_OPCODE(UC, RDMA_WRITE_MIDDLE), |
137 | IB_OPCODE(UC, RDMA_WRITE_LAST), |
138 | IB_OPCODE(UC, RDMA_WRITE_LAST_WITH_IMMEDIATE), |
139 | IB_OPCODE(UC, RDMA_WRITE_ONLY), |
140 | IB_OPCODE(UC, RDMA_WRITE_ONLY_WITH_IMMEDIATE), |
141 | |
142 | /* RD */ |
143 | IB_OPCODE(RD, SEND_FIRST), |
144 | IB_OPCODE(RD, SEND_MIDDLE), |
145 | IB_OPCODE(RD, SEND_LAST), |
146 | IB_OPCODE(RD, SEND_LAST_WITH_IMMEDIATE), |
147 | IB_OPCODE(RD, SEND_ONLY), |
148 | IB_OPCODE(RD, SEND_ONLY_WITH_IMMEDIATE), |
149 | IB_OPCODE(RD, RDMA_WRITE_FIRST), |
150 | IB_OPCODE(RD, RDMA_WRITE_MIDDLE), |
151 | IB_OPCODE(RD, RDMA_WRITE_LAST), |
152 | IB_OPCODE(RD, RDMA_WRITE_LAST_WITH_IMMEDIATE), |
153 | IB_OPCODE(RD, RDMA_WRITE_ONLY), |
154 | IB_OPCODE(RD, RDMA_WRITE_ONLY_WITH_IMMEDIATE), |
155 | IB_OPCODE(RD, RDMA_READ_REQUEST), |
156 | IB_OPCODE(RD, RDMA_READ_RESPONSE_FIRST), |
157 | IB_OPCODE(RD, RDMA_READ_RESPONSE_MIDDLE), |
158 | IB_OPCODE(RD, RDMA_READ_RESPONSE_LAST), |
159 | IB_OPCODE(RD, RDMA_READ_RESPONSE_ONLY), |
160 | IB_OPCODE(RD, ACKNOWLEDGE), |
161 | IB_OPCODE(RD, ATOMIC_ACKNOWLEDGE), |
162 | IB_OPCODE(RD, COMPARE_SWAP), |
163 | IB_OPCODE(RD, FETCH_ADD), |
164 | |
165 | /* UD */ |
166 | IB_OPCODE(UD, SEND_ONLY), |
167 | IB_OPCODE(UD, SEND_ONLY_WITH_IMMEDIATE) |
168 | }; |
169 | |
170 | enum { |
171 | IB_LNH_RAW = 0, |
172 | IB_LNH_IP = 1, |
173 | IB_LNH_IBA_LOCAL = 2, |
174 | IB_LNH_IBA_GLOBAL = 3 |
175 | }; |
176 | |
177 | struct ib_unpacked_lrh { |
178 | u8 virtual_lane; |
179 | u8 link_version; |
180 | u8 service_level; |
181 | u8 link_next_header; |
182 | __be16 destination_lid; |
183 | __be16 packet_length; |
184 | __be16 source_lid; |
185 | }; |
186 | |
187 | struct ib_unpacked_grh { |
188 | u8 ip_version; |
189 | u8 traffic_class; |
190 | __be32 flow_label; |
191 | __be16 payload_length; |
192 | u8 next_header; |
193 | u8 hop_limit; |
194 | union ib_gid source_gid; |
195 | union ib_gid destination_gid; |
196 | }; |
197 | |
198 | struct ib_unpacked_bth { |
199 | u8 opcode; |
200 | u8 solicited_event; |
201 | u8 mig_req; |
202 | u8 pad_count; |
203 | u8 transport_header_version; |
204 | __be16 pkey; |
205 | __be32 destination_qpn; |
206 | u8 ack_req; |
207 | __be32 psn; |
208 | }; |
209 | |
210 | struct ib_unpacked_deth { |
211 | __be32 qkey; |
212 | __be32 source_qpn; |
213 | }; |
214 | |
215 | struct ib_unpacked_eth { |
216 | u8 dmac_h[4]; |
217 | u8 dmac_l[2]; |
218 | u8 smac_h[2]; |
219 | u8 smac_l[4]; |
220 | __be16 type; |
221 | }; |
222 | |
223 | struct ib_unpacked_vlan { |
224 | __be16 tag; |
225 | __be16 type; |
226 | }; |
227 | |
228 | struct ib_ud_header { |
229 | int lrh_present; |
230 | struct ib_unpacked_lrh lrh; |
231 | int eth_present; |
232 | struct ib_unpacked_eth eth; |
233 | int vlan_present; |
234 | struct ib_unpacked_vlan vlan; |
235 | int grh_present; |
236 | struct ib_unpacked_grh grh; |
237 | struct ib_unpacked_bth bth; |
238 | struct ib_unpacked_deth deth; |
239 | int immediate_present; |
240 | __be32 immediate_data; |
241 | }; |
242 | |
243 | void ib_pack(const struct ib_field *desc, |
244 | int desc_len, |
245 | void *structure, |
246 | void *buf); |
247 | |
248 | void ib_unpack(const struct ib_field *desc, |
249 | int desc_len, |
250 | void *buf, |
251 | void *structure); |
252 | |
253 | void ib_ud_header_init(int payload_bytes, |
254 | int lrh_present, |
255 | int eth_present, |
256 | int vlan_present, |
257 | int grh_present, |
258 | int immediate_present, |
259 | struct ib_ud_header *header); |
260 | |
261 | int ib_ud_header_pack(struct ib_ud_header *header, |
262 | void *buf); |
263 | |
264 | int ib_ud_header_unpack(void *buf, |
265 | struct ib_ud_header *header); |
266 | |
267 | #endif /* IB_PACK_H */ |
268 |
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