ib_pack.h
8.02 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
/*
* Copyright (c) 2004 Topspin Corporation. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef IB_PACK_H
#define IB_PACK_H
#include <rdma/ib_verbs.h>
#include <uapi/linux/if_ether.h>
enum {
IB_LRH_BYTES = 8,
IB_ETH_BYTES = 14,
IB_VLAN_BYTES = 4,
IB_GRH_BYTES = 40,
IB_BTH_BYTES = 12,
IB_DETH_BYTES = 8
};
struct ib_field {
size_t struct_offset_bytes;
size_t struct_size_bytes;
int offset_words;
int offset_bits;
int size_bits;
char *field_name;
};
#define RESERVED \
.field_name = "reserved"
/*
* This macro cleans up the definitions of constants for BTH opcodes.
* It is used to define constants such as IB_OPCODE_UD_SEND_ONLY,
* which becomes IB_OPCODE_UD + IB_OPCODE_SEND_ONLY, and this gives
* the correct value.
*
* In short, user code should use the constants defined using the
* macro rather than worrying about adding together other constants.
*/
#define IB_OPCODE(transport, op) \
IB_OPCODE_ ## transport ## _ ## op = \
IB_OPCODE_ ## transport + IB_OPCODE_ ## op
enum {
/* transport types -- just used to define real constants */
IB_OPCODE_RC = 0x00,
IB_OPCODE_UC = 0x20,
IB_OPCODE_RD = 0x40,
IB_OPCODE_UD = 0x60,
/* operations -- just used to define real constants */
IB_OPCODE_SEND_FIRST = 0x00,
IB_OPCODE_SEND_MIDDLE = 0x01,
IB_OPCODE_SEND_LAST = 0x02,
IB_OPCODE_SEND_LAST_WITH_IMMEDIATE = 0x03,
IB_OPCODE_SEND_ONLY = 0x04,
IB_OPCODE_SEND_ONLY_WITH_IMMEDIATE = 0x05,
IB_OPCODE_RDMA_WRITE_FIRST = 0x06,
IB_OPCODE_RDMA_WRITE_MIDDLE = 0x07,
IB_OPCODE_RDMA_WRITE_LAST = 0x08,
IB_OPCODE_RDMA_WRITE_LAST_WITH_IMMEDIATE = 0x09,
IB_OPCODE_RDMA_WRITE_ONLY = 0x0a,
IB_OPCODE_RDMA_WRITE_ONLY_WITH_IMMEDIATE = 0x0b,
IB_OPCODE_RDMA_READ_REQUEST = 0x0c,
IB_OPCODE_RDMA_READ_RESPONSE_FIRST = 0x0d,
IB_OPCODE_RDMA_READ_RESPONSE_MIDDLE = 0x0e,
IB_OPCODE_RDMA_READ_RESPONSE_LAST = 0x0f,
IB_OPCODE_RDMA_READ_RESPONSE_ONLY = 0x10,
IB_OPCODE_ACKNOWLEDGE = 0x11,
IB_OPCODE_ATOMIC_ACKNOWLEDGE = 0x12,
IB_OPCODE_COMPARE_SWAP = 0x13,
IB_OPCODE_FETCH_ADD = 0x14,
/* real constants follow -- see comment about above IB_OPCODE()
macro for more details */
/* RC */
IB_OPCODE(RC, SEND_FIRST),
IB_OPCODE(RC, SEND_MIDDLE),
IB_OPCODE(RC, SEND_LAST),
IB_OPCODE(RC, SEND_LAST_WITH_IMMEDIATE),
IB_OPCODE(RC, SEND_ONLY),
IB_OPCODE(RC, SEND_ONLY_WITH_IMMEDIATE),
IB_OPCODE(RC, RDMA_WRITE_FIRST),
IB_OPCODE(RC, RDMA_WRITE_MIDDLE),
IB_OPCODE(RC, RDMA_WRITE_LAST),
IB_OPCODE(RC, RDMA_WRITE_LAST_WITH_IMMEDIATE),
IB_OPCODE(RC, RDMA_WRITE_ONLY),
IB_OPCODE(RC, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
IB_OPCODE(RC, RDMA_READ_REQUEST),
IB_OPCODE(RC, RDMA_READ_RESPONSE_FIRST),
IB_OPCODE(RC, RDMA_READ_RESPONSE_MIDDLE),
IB_OPCODE(RC, RDMA_READ_RESPONSE_LAST),
IB_OPCODE(RC, RDMA_READ_RESPONSE_ONLY),
IB_OPCODE(RC, ACKNOWLEDGE),
IB_OPCODE(RC, ATOMIC_ACKNOWLEDGE),
IB_OPCODE(RC, COMPARE_SWAP),
IB_OPCODE(RC, FETCH_ADD),
/* UC */
IB_OPCODE(UC, SEND_FIRST),
IB_OPCODE(UC, SEND_MIDDLE),
IB_OPCODE(UC, SEND_LAST),
IB_OPCODE(UC, SEND_LAST_WITH_IMMEDIATE),
IB_OPCODE(UC, SEND_ONLY),
IB_OPCODE(UC, SEND_ONLY_WITH_IMMEDIATE),
IB_OPCODE(UC, RDMA_WRITE_FIRST),
IB_OPCODE(UC, RDMA_WRITE_MIDDLE),
IB_OPCODE(UC, RDMA_WRITE_LAST),
IB_OPCODE(UC, RDMA_WRITE_LAST_WITH_IMMEDIATE),
IB_OPCODE(UC, RDMA_WRITE_ONLY),
IB_OPCODE(UC, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
/* RD */
IB_OPCODE(RD, SEND_FIRST),
IB_OPCODE(RD, SEND_MIDDLE),
IB_OPCODE(RD, SEND_LAST),
IB_OPCODE(RD, SEND_LAST_WITH_IMMEDIATE),
IB_OPCODE(RD, SEND_ONLY),
IB_OPCODE(RD, SEND_ONLY_WITH_IMMEDIATE),
IB_OPCODE(RD, RDMA_WRITE_FIRST),
IB_OPCODE(RD, RDMA_WRITE_MIDDLE),
IB_OPCODE(RD, RDMA_WRITE_LAST),
IB_OPCODE(RD, RDMA_WRITE_LAST_WITH_IMMEDIATE),
IB_OPCODE(RD, RDMA_WRITE_ONLY),
IB_OPCODE(RD, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
IB_OPCODE(RD, RDMA_READ_REQUEST),
IB_OPCODE(RD, RDMA_READ_RESPONSE_FIRST),
IB_OPCODE(RD, RDMA_READ_RESPONSE_MIDDLE),
IB_OPCODE(RD, RDMA_READ_RESPONSE_LAST),
IB_OPCODE(RD, RDMA_READ_RESPONSE_ONLY),
IB_OPCODE(RD, ACKNOWLEDGE),
IB_OPCODE(RD, ATOMIC_ACKNOWLEDGE),
IB_OPCODE(RD, COMPARE_SWAP),
IB_OPCODE(RD, FETCH_ADD),
/* UD */
IB_OPCODE(UD, SEND_ONLY),
IB_OPCODE(UD, SEND_ONLY_WITH_IMMEDIATE)
};
enum {
IB_LNH_RAW = 0,
IB_LNH_IP = 1,
IB_LNH_IBA_LOCAL = 2,
IB_LNH_IBA_GLOBAL = 3
};
struct ib_unpacked_lrh {
u8 virtual_lane;
u8 link_version;
u8 service_level;
u8 link_next_header;
__be16 destination_lid;
__be16 packet_length;
__be16 source_lid;
};
struct ib_unpacked_grh {
u8 ip_version;
u8 traffic_class;
__be32 flow_label;
__be16 payload_length;
u8 next_header;
u8 hop_limit;
union ib_gid source_gid;
union ib_gid destination_gid;
};
struct ib_unpacked_bth {
u8 opcode;
u8 solicited_event;
u8 mig_req;
u8 pad_count;
u8 transport_header_version;
__be16 pkey;
__be32 destination_qpn;
u8 ack_req;
__be32 psn;
};
struct ib_unpacked_deth {
__be32 qkey;
__be32 source_qpn;
};
struct ib_unpacked_eth {
u8 dmac_h[4];
u8 dmac_l[2];
u8 smac_h[2];
u8 smac_l[4];
__be16 type;
};
struct ib_unpacked_vlan {
__be16 tag;
__be16 type;
};
struct ib_ud_header {
int lrh_present;
struct ib_unpacked_lrh lrh;
int eth_present;
struct ib_unpacked_eth eth;
int vlan_present;
struct ib_unpacked_vlan vlan;
int grh_present;
struct ib_unpacked_grh grh;
struct ib_unpacked_bth bth;
struct ib_unpacked_deth deth;
int immediate_present;
__be32 immediate_data;
};
void ib_pack(const struct ib_field *desc,
int desc_len,
void *structure,
void *buf);
void ib_unpack(const struct ib_field *desc,
int desc_len,
void *buf,
void *structure);
void ib_ud_header_init(int payload_bytes,
int lrh_present,
int eth_present,
int vlan_present,
int grh_present,
int immediate_present,
struct ib_ud_header *header);
int ib_ud_header_pack(struct ib_ud_header *header,
void *buf);
int ib_ud_header_unpack(void *buf,
struct ib_ud_header *header);
#endif /* IB_PACK_H */