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1da177e4 LT |
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. | |
1da177e4 LT |
31 | */ |
32 | ||
33 | #ifndef IB_PACK_H | |
34 | #define IB_PACK_H | |
35 | ||
a4d61e84 | 36 | #include <rdma/ib_verbs.h> |
dd5f03be | 37 | #include <uapi/linux/if_ether.h> |
1da177e4 LT |
38 | |
39 | enum { | |
40 | IB_LRH_BYTES = 8, | |
ff7f5aab | 41 | IB_ETH_BYTES = 14, |
af7bd463 | 42 | IB_VLAN_BYTES = 4, |
1da177e4 LT |
43 | IB_GRH_BYTES = 40, |
44 | IB_BTH_BYTES = 12, | |
45 | IB_DETH_BYTES = 8 | |
46 | }; | |
47 | ||
48 | struct ib_field { | |
49 | size_t struct_offset_bytes; | |
50 | size_t struct_size_bytes; | |
51 | int offset_words; | |
52 | int offset_bits; | |
53 | int size_bits; | |
54 | char *field_name; | |
55 | }; | |
56 | ||
57 | #define RESERVED \ | |
58 | .field_name = "reserved" | |
59 | ||
60 | /* | |
61 | * This macro cleans up the definitions of constants for BTH opcodes. | |
62 | * It is used to define constants such as IB_OPCODE_UD_SEND_ONLY, | |
63 | * which becomes IB_OPCODE_UD + IB_OPCODE_SEND_ONLY, and this gives | |
64 | * the correct value. | |
65 | * | |
66 | * In short, user code should use the constants defined using the | |
67 | * macro rather than worrying about adding together other constants. | |
68 | */ | |
69 | #define IB_OPCODE(transport, op) \ | |
70 | IB_OPCODE_ ## transport ## _ ## op = \ | |
71 | IB_OPCODE_ ## transport + IB_OPCODE_ ## op | |
72 | ||
73 | enum { | |
74 | /* transport types -- just used to define real constants */ | |
75 | IB_OPCODE_RC = 0x00, | |
76 | IB_OPCODE_UC = 0x20, | |
77 | IB_OPCODE_RD = 0x40, | |
78 | IB_OPCODE_UD = 0x60, | |
79 | ||
80 | /* operations -- just used to define real constants */ | |
81 | IB_OPCODE_SEND_FIRST = 0x00, | |
82 | IB_OPCODE_SEND_MIDDLE = 0x01, | |
83 | IB_OPCODE_SEND_LAST = 0x02, | |
84 | IB_OPCODE_SEND_LAST_WITH_IMMEDIATE = 0x03, | |
85 | IB_OPCODE_SEND_ONLY = 0x04, | |
86 | IB_OPCODE_SEND_ONLY_WITH_IMMEDIATE = 0x05, | |
87 | IB_OPCODE_RDMA_WRITE_FIRST = 0x06, | |
88 | IB_OPCODE_RDMA_WRITE_MIDDLE = 0x07, | |
89 | IB_OPCODE_RDMA_WRITE_LAST = 0x08, | |
90 | IB_OPCODE_RDMA_WRITE_LAST_WITH_IMMEDIATE = 0x09, | |
91 | IB_OPCODE_RDMA_WRITE_ONLY = 0x0a, | |
92 | IB_OPCODE_RDMA_WRITE_ONLY_WITH_IMMEDIATE = 0x0b, | |
93 | IB_OPCODE_RDMA_READ_REQUEST = 0x0c, | |
94 | IB_OPCODE_RDMA_READ_RESPONSE_FIRST = 0x0d, | |
95 | IB_OPCODE_RDMA_READ_RESPONSE_MIDDLE = 0x0e, | |
96 | IB_OPCODE_RDMA_READ_RESPONSE_LAST = 0x0f, | |
97 | IB_OPCODE_RDMA_READ_RESPONSE_ONLY = 0x10, | |
98 | IB_OPCODE_ACKNOWLEDGE = 0x11, | |
99 | IB_OPCODE_ATOMIC_ACKNOWLEDGE = 0x12, | |
100 | IB_OPCODE_COMPARE_SWAP = 0x13, | |
101 | IB_OPCODE_FETCH_ADD = 0x14, | |
102 | ||
103 | /* real constants follow -- see comment about above IB_OPCODE() | |
104 | macro for more details */ | |
105 | ||
106 | /* RC */ | |
107 | IB_OPCODE(RC, SEND_FIRST), | |
108 | IB_OPCODE(RC, SEND_MIDDLE), | |
109 | IB_OPCODE(RC, SEND_LAST), | |
110 | IB_OPCODE(RC, SEND_LAST_WITH_IMMEDIATE), | |
111 | IB_OPCODE(RC, SEND_ONLY), | |
112 | IB_OPCODE(RC, SEND_ONLY_WITH_IMMEDIATE), | |
113 | IB_OPCODE(RC, RDMA_WRITE_FIRST), | |
114 | IB_OPCODE(RC, RDMA_WRITE_MIDDLE), | |
115 | IB_OPCODE(RC, RDMA_WRITE_LAST), | |
116 | IB_OPCODE(RC, RDMA_WRITE_LAST_WITH_IMMEDIATE), | |
117 | IB_OPCODE(RC, RDMA_WRITE_ONLY), | |
118 | IB_OPCODE(RC, RDMA_WRITE_ONLY_WITH_IMMEDIATE), | |
119 | IB_OPCODE(RC, RDMA_READ_REQUEST), | |
120 | IB_OPCODE(RC, RDMA_READ_RESPONSE_FIRST), | |
121 | IB_OPCODE(RC, RDMA_READ_RESPONSE_MIDDLE), | |
122 | IB_OPCODE(RC, RDMA_READ_RESPONSE_LAST), | |
123 | IB_OPCODE(RC, RDMA_READ_RESPONSE_ONLY), | |
124 | IB_OPCODE(RC, ACKNOWLEDGE), | |
125 | IB_OPCODE(RC, ATOMIC_ACKNOWLEDGE), | |
126 | IB_OPCODE(RC, COMPARE_SWAP), | |
127 | IB_OPCODE(RC, FETCH_ADD), | |
128 | ||
129 | /* UC */ | |
130 | IB_OPCODE(UC, SEND_FIRST), | |
131 | IB_OPCODE(UC, SEND_MIDDLE), | |
132 | IB_OPCODE(UC, SEND_LAST), | |
133 | IB_OPCODE(UC, SEND_LAST_WITH_IMMEDIATE), | |
134 | IB_OPCODE(UC, SEND_ONLY), | |
135 | IB_OPCODE(UC, SEND_ONLY_WITH_IMMEDIATE), | |
136 | IB_OPCODE(UC, RDMA_WRITE_FIRST), | |
137 | IB_OPCODE(UC, RDMA_WRITE_MIDDLE), | |
138 | IB_OPCODE(UC, RDMA_WRITE_LAST), | |
139 | IB_OPCODE(UC, RDMA_WRITE_LAST_WITH_IMMEDIATE), | |
140 | IB_OPCODE(UC, RDMA_WRITE_ONLY), | |
141 | IB_OPCODE(UC, RDMA_WRITE_ONLY_WITH_IMMEDIATE), | |
142 | ||
143 | /* RD */ | |
144 | IB_OPCODE(RD, SEND_FIRST), | |
145 | IB_OPCODE(RD, SEND_MIDDLE), | |
146 | IB_OPCODE(RD, SEND_LAST), | |
147 | IB_OPCODE(RD, SEND_LAST_WITH_IMMEDIATE), | |
148 | IB_OPCODE(RD, SEND_ONLY), | |
149 | IB_OPCODE(RD, SEND_ONLY_WITH_IMMEDIATE), | |
150 | IB_OPCODE(RD, RDMA_WRITE_FIRST), | |
151 | IB_OPCODE(RD, RDMA_WRITE_MIDDLE), | |
152 | IB_OPCODE(RD, RDMA_WRITE_LAST), | |
153 | IB_OPCODE(RD, RDMA_WRITE_LAST_WITH_IMMEDIATE), | |
154 | IB_OPCODE(RD, RDMA_WRITE_ONLY), | |
155 | IB_OPCODE(RD, RDMA_WRITE_ONLY_WITH_IMMEDIATE), | |
156 | IB_OPCODE(RD, RDMA_READ_REQUEST), | |
157 | IB_OPCODE(RD, RDMA_READ_RESPONSE_FIRST), | |
158 | IB_OPCODE(RD, RDMA_READ_RESPONSE_MIDDLE), | |
159 | IB_OPCODE(RD, RDMA_READ_RESPONSE_LAST), | |
160 | IB_OPCODE(RD, RDMA_READ_RESPONSE_ONLY), | |
161 | IB_OPCODE(RD, ACKNOWLEDGE), | |
162 | IB_OPCODE(RD, ATOMIC_ACKNOWLEDGE), | |
163 | IB_OPCODE(RD, COMPARE_SWAP), | |
164 | IB_OPCODE(RD, FETCH_ADD), | |
165 | ||
166 | /* UD */ | |
167 | IB_OPCODE(UD, SEND_ONLY), | |
168 | IB_OPCODE(UD, SEND_ONLY_WITH_IMMEDIATE) | |
169 | }; | |
170 | ||
171 | enum { | |
172 | IB_LNH_RAW = 0, | |
173 | IB_LNH_IP = 1, | |
174 | IB_LNH_IBA_LOCAL = 2, | |
175 | IB_LNH_IBA_GLOBAL = 3 | |
176 | }; | |
177 | ||
178 | struct ib_unpacked_lrh { | |
179 | u8 virtual_lane; | |
180 | u8 link_version; | |
181 | u8 service_level; | |
182 | u8 link_next_header; | |
183 | __be16 destination_lid; | |
184 | __be16 packet_length; | |
185 | __be16 source_lid; | |
186 | }; | |
187 | ||
188 | struct ib_unpacked_grh { | |
189 | u8 ip_version; | |
190 | u8 traffic_class; | |
191 | __be32 flow_label; | |
192 | __be16 payload_length; | |
193 | u8 next_header; | |
194 | u8 hop_limit; | |
195 | union ib_gid source_gid; | |
196 | union ib_gid destination_gid; | |
197 | }; | |
198 | ||
199 | struct ib_unpacked_bth { | |
200 | u8 opcode; | |
201 | u8 solicited_event; | |
202 | u8 mig_req; | |
203 | u8 pad_count; | |
204 | u8 transport_header_version; | |
205 | __be16 pkey; | |
206 | __be32 destination_qpn; | |
207 | u8 ack_req; | |
208 | __be32 psn; | |
209 | }; | |
210 | ||
211 | struct ib_unpacked_deth { | |
212 | __be32 qkey; | |
213 | __be32 source_qpn; | |
214 | }; | |
215 | ||
ff7f5aab EC |
216 | struct ib_unpacked_eth { |
217 | u8 dmac_h[4]; | |
218 | u8 dmac_l[2]; | |
219 | u8 smac_h[2]; | |
220 | u8 smac_l[4]; | |
221 | __be16 type; | |
222 | }; | |
223 | ||
af7bd463 EC |
224 | struct ib_unpacked_vlan { |
225 | __be16 tag; | |
226 | __be16 type; | |
227 | }; | |
228 | ||
1da177e4 | 229 | struct ib_ud_header { |
ff7f5aab | 230 | int lrh_present; |
1da177e4 | 231 | struct ib_unpacked_lrh lrh; |
ff7f5aab EC |
232 | int eth_present; |
233 | struct ib_unpacked_eth eth; | |
af7bd463 EC |
234 | int vlan_present; |
235 | struct ib_unpacked_vlan vlan; | |
ff7f5aab EC |
236 | int grh_present; |
237 | struct ib_unpacked_grh grh; | |
238 | struct ib_unpacked_bth bth; | |
1da177e4 | 239 | struct ib_unpacked_deth deth; |
ff7f5aab EC |
240 | int immediate_present; |
241 | __be32 immediate_data; | |
1da177e4 LT |
242 | }; |
243 | ||
244 | void ib_pack(const struct ib_field *desc, | |
245 | int desc_len, | |
246 | void *structure, | |
247 | void *buf); | |
248 | ||
249 | void ib_unpack(const struct ib_field *desc, | |
250 | int desc_len, | |
251 | void *buf, | |
252 | void *structure); | |
253 | ||
ff7f5aab EC |
254 | void ib_ud_header_init(int payload_bytes, |
255 | int lrh_present, | |
256 | int eth_present, | |
af7bd463 | 257 | int vlan_present, |
ff7f5aab EC |
258 | int grh_present, |
259 | int immediate_present, | |
1da177e4 LT |
260 | struct ib_ud_header *header); |
261 | ||
262 | int ib_ud_header_pack(struct ib_ud_header *header, | |
263 | void *buf); | |
264 | ||
265 | int ib_ud_header_unpack(void *buf, | |
266 | struct ib_ud_header *header); | |
267 | ||
268 | #endif /* IB_PACK_H */ |