1 | /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ |
2 | /* |
3 | * Copyright (c) 2004 Topspin Corporation. All rights reserved. |
4 | */ |
5 | |
6 | #ifndef IB_PACK_H |
7 | #define IB_PACK_H |
8 | |
9 | #include <rdma/ib_verbs.h> |
10 | #include <uapi/linux/if_ether.h> |
11 | |
12 | enum { |
13 | IB_LRH_BYTES = 8, |
14 | IB_ETH_BYTES = 14, |
15 | IB_VLAN_BYTES = 4, |
16 | IB_GRH_BYTES = 40, |
17 | IB_IP4_BYTES = 20, |
18 | IB_UDP_BYTES = 8, |
19 | IB_BTH_BYTES = 12, |
20 | IB_DETH_BYTES = 8, |
21 | IB_EXT_ATOMICETH_BYTES = 28, |
22 | IB_EXT_XRC_BYTES = 4, |
23 | IB_ICRC_BYTES = 4 |
24 | }; |
25 | |
26 | struct ib_field { |
27 | size_t struct_offset_bytes; |
28 | size_t struct_size_bytes; |
29 | int offset_words; |
30 | int offset_bits; |
31 | int size_bits; |
32 | char *field_name; |
33 | }; |
34 | |
35 | #define RESERVED \ |
36 | .field_name = "reserved" |
37 | |
38 | /* |
39 | * This macro cleans up the definitions of constants for BTH opcodes. |
40 | * It is used to define constants such as IB_OPCODE_UD_SEND_ONLY, |
41 | * which becomes IB_OPCODE_UD + IB_OPCODE_SEND_ONLY, and this gives |
42 | * the correct value. |
43 | * |
44 | * In short, user code should use the constants defined using the |
45 | * macro rather than worrying about adding together other constants. |
46 | */ |
47 | #define IB_OPCODE(transport, op) \ |
48 | IB_OPCODE_ ## transport ## _ ## op = \ |
49 | IB_OPCODE_ ## transport + IB_OPCODE_ ## op |
50 | |
51 | enum { |
52 | /* transport types -- just used to define real constants */ |
53 | IB_OPCODE_RC = 0x00, |
54 | IB_OPCODE_UC = 0x20, |
55 | IB_OPCODE_RD = 0x40, |
56 | IB_OPCODE_UD = 0x60, |
57 | /* per IBTA 1.3 vol 1 Table 38, A10.3.2 */ |
58 | IB_OPCODE_CNP = 0x80, |
59 | /* Manufacturer specific */ |
60 | IB_OPCODE_MSP = 0xe0, |
61 | |
62 | /* operations -- just used to define real constants */ |
63 | IB_OPCODE_SEND_FIRST = 0x00, |
64 | IB_OPCODE_SEND_MIDDLE = 0x01, |
65 | IB_OPCODE_SEND_LAST = 0x02, |
66 | IB_OPCODE_SEND_LAST_WITH_IMMEDIATE = 0x03, |
67 | IB_OPCODE_SEND_ONLY = 0x04, |
68 | IB_OPCODE_SEND_ONLY_WITH_IMMEDIATE = 0x05, |
69 | IB_OPCODE_RDMA_WRITE_FIRST = 0x06, |
70 | IB_OPCODE_RDMA_WRITE_MIDDLE = 0x07, |
71 | IB_OPCODE_RDMA_WRITE_LAST = 0x08, |
72 | IB_OPCODE_RDMA_WRITE_LAST_WITH_IMMEDIATE = 0x09, |
73 | IB_OPCODE_RDMA_WRITE_ONLY = 0x0a, |
74 | IB_OPCODE_RDMA_WRITE_ONLY_WITH_IMMEDIATE = 0x0b, |
75 | IB_OPCODE_RDMA_READ_REQUEST = 0x0c, |
76 | IB_OPCODE_RDMA_READ_RESPONSE_FIRST = 0x0d, |
77 | IB_OPCODE_RDMA_READ_RESPONSE_MIDDLE = 0x0e, |
78 | IB_OPCODE_RDMA_READ_RESPONSE_LAST = 0x0f, |
79 | IB_OPCODE_RDMA_READ_RESPONSE_ONLY = 0x10, |
80 | IB_OPCODE_ACKNOWLEDGE = 0x11, |
81 | IB_OPCODE_ATOMIC_ACKNOWLEDGE = 0x12, |
82 | IB_OPCODE_COMPARE_SWAP = 0x13, |
83 | IB_OPCODE_FETCH_ADD = 0x14, |
84 | /* opcode 0x15 is reserved */ |
85 | IB_OPCODE_SEND_LAST_WITH_INVALIDATE = 0x16, |
86 | IB_OPCODE_SEND_ONLY_WITH_INVALIDATE = 0x17, |
87 | IB_OPCODE_FLUSH = 0x1C, |
88 | IB_OPCODE_ATOMIC_WRITE = 0x1D, |
89 | |
90 | /* real constants follow -- see comment about above IB_OPCODE() |
91 | macro for more details */ |
92 | |
93 | /* RC */ |
94 | IB_OPCODE(RC, SEND_FIRST), |
95 | IB_OPCODE(RC, SEND_MIDDLE), |
96 | IB_OPCODE(RC, SEND_LAST), |
97 | IB_OPCODE(RC, SEND_LAST_WITH_IMMEDIATE), |
98 | IB_OPCODE(RC, SEND_ONLY), |
99 | IB_OPCODE(RC, SEND_ONLY_WITH_IMMEDIATE), |
100 | IB_OPCODE(RC, RDMA_WRITE_FIRST), |
101 | IB_OPCODE(RC, RDMA_WRITE_MIDDLE), |
102 | IB_OPCODE(RC, RDMA_WRITE_LAST), |
103 | IB_OPCODE(RC, RDMA_WRITE_LAST_WITH_IMMEDIATE), |
104 | IB_OPCODE(RC, RDMA_WRITE_ONLY), |
105 | IB_OPCODE(RC, RDMA_WRITE_ONLY_WITH_IMMEDIATE), |
106 | IB_OPCODE(RC, RDMA_READ_REQUEST), |
107 | IB_OPCODE(RC, RDMA_READ_RESPONSE_FIRST), |
108 | IB_OPCODE(RC, RDMA_READ_RESPONSE_MIDDLE), |
109 | IB_OPCODE(RC, RDMA_READ_RESPONSE_LAST), |
110 | IB_OPCODE(RC, RDMA_READ_RESPONSE_ONLY), |
111 | IB_OPCODE(RC, ACKNOWLEDGE), |
112 | IB_OPCODE(RC, ATOMIC_ACKNOWLEDGE), |
113 | IB_OPCODE(RC, COMPARE_SWAP), |
114 | IB_OPCODE(RC, FETCH_ADD), |
115 | IB_OPCODE(RC, SEND_LAST_WITH_INVALIDATE), |
116 | IB_OPCODE(RC, SEND_ONLY_WITH_INVALIDATE), |
117 | IB_OPCODE(RC, FLUSH), |
118 | IB_OPCODE(RC, ATOMIC_WRITE), |
119 | |
120 | /* UC */ |
121 | IB_OPCODE(UC, SEND_FIRST), |
122 | IB_OPCODE(UC, SEND_MIDDLE), |
123 | IB_OPCODE(UC, SEND_LAST), |
124 | IB_OPCODE(UC, SEND_LAST_WITH_IMMEDIATE), |
125 | IB_OPCODE(UC, SEND_ONLY), |
126 | IB_OPCODE(UC, SEND_ONLY_WITH_IMMEDIATE), |
127 | IB_OPCODE(UC, RDMA_WRITE_FIRST), |
128 | IB_OPCODE(UC, RDMA_WRITE_MIDDLE), |
129 | IB_OPCODE(UC, RDMA_WRITE_LAST), |
130 | IB_OPCODE(UC, RDMA_WRITE_LAST_WITH_IMMEDIATE), |
131 | IB_OPCODE(UC, RDMA_WRITE_ONLY), |
132 | IB_OPCODE(UC, RDMA_WRITE_ONLY_WITH_IMMEDIATE), |
133 | |
134 | /* RD */ |
135 | IB_OPCODE(RD, SEND_FIRST), |
136 | IB_OPCODE(RD, SEND_MIDDLE), |
137 | IB_OPCODE(RD, SEND_LAST), |
138 | IB_OPCODE(RD, SEND_LAST_WITH_IMMEDIATE), |
139 | IB_OPCODE(RD, SEND_ONLY), |
140 | IB_OPCODE(RD, SEND_ONLY_WITH_IMMEDIATE), |
141 | IB_OPCODE(RD, RDMA_WRITE_FIRST), |
142 | IB_OPCODE(RD, RDMA_WRITE_MIDDLE), |
143 | IB_OPCODE(RD, RDMA_WRITE_LAST), |
144 | IB_OPCODE(RD, RDMA_WRITE_LAST_WITH_IMMEDIATE), |
145 | IB_OPCODE(RD, RDMA_WRITE_ONLY), |
146 | IB_OPCODE(RD, RDMA_WRITE_ONLY_WITH_IMMEDIATE), |
147 | IB_OPCODE(RD, RDMA_READ_REQUEST), |
148 | IB_OPCODE(RD, RDMA_READ_RESPONSE_FIRST), |
149 | IB_OPCODE(RD, RDMA_READ_RESPONSE_MIDDLE), |
150 | IB_OPCODE(RD, RDMA_READ_RESPONSE_LAST), |
151 | IB_OPCODE(RD, RDMA_READ_RESPONSE_ONLY), |
152 | IB_OPCODE(RD, ACKNOWLEDGE), |
153 | IB_OPCODE(RD, ATOMIC_ACKNOWLEDGE), |
154 | IB_OPCODE(RD, COMPARE_SWAP), |
155 | IB_OPCODE(RD, FETCH_ADD), |
156 | IB_OPCODE(RD, FLUSH), |
157 | |
158 | /* UD */ |
159 | IB_OPCODE(UD, SEND_ONLY), |
160 | IB_OPCODE(UD, SEND_ONLY_WITH_IMMEDIATE) |
161 | }; |
162 | |
163 | enum { |
164 | IB_LNH_RAW = 0, |
165 | IB_LNH_IP = 1, |
166 | IB_LNH_IBA_LOCAL = 2, |
167 | IB_LNH_IBA_GLOBAL = 3 |
168 | }; |
169 | |
170 | struct ib_unpacked_lrh { |
171 | u8 virtual_lane; |
172 | u8 link_version; |
173 | u8 service_level; |
174 | u8 ; |
175 | __be16 destination_lid; |
176 | __be16 packet_length; |
177 | __be16 source_lid; |
178 | }; |
179 | |
180 | struct ib_unpacked_grh { |
181 | u8 ip_version; |
182 | u8 traffic_class; |
183 | __be32 flow_label; |
184 | __be16 payload_length; |
185 | u8 ; |
186 | u8 hop_limit; |
187 | union ib_gid source_gid; |
188 | union ib_gid destination_gid; |
189 | }; |
190 | |
191 | struct ib_unpacked_bth { |
192 | u8 opcode; |
193 | u8 solicited_event; |
194 | u8 mig_req; |
195 | u8 pad_count; |
196 | u8 ; |
197 | __be16 pkey; |
198 | __be32 destination_qpn; |
199 | u8 ack_req; |
200 | __be32 psn; |
201 | }; |
202 | |
203 | struct ib_unpacked_deth { |
204 | __be32 qkey; |
205 | __be32 source_qpn; |
206 | }; |
207 | |
208 | struct ib_unpacked_eth { |
209 | u8 dmac_h[4]; |
210 | u8 dmac_l[2]; |
211 | u8 smac_h[2]; |
212 | u8 smac_l[4]; |
213 | __be16 type; |
214 | }; |
215 | |
216 | struct ib_unpacked_ip4 { |
217 | u8 ver; |
218 | u8 hdr_len; |
219 | u8 tos; |
220 | __be16 tot_len; |
221 | __be16 id; |
222 | __be16 frag_off; |
223 | u8 ttl; |
224 | u8 protocol; |
225 | __sum16 check; |
226 | __be32 saddr; |
227 | __be32 daddr; |
228 | }; |
229 | |
230 | struct ib_unpacked_udp { |
231 | __be16 sport; |
232 | __be16 dport; |
233 | __be16 length; |
234 | __be16 csum; |
235 | }; |
236 | |
237 | struct ib_unpacked_vlan { |
238 | __be16 tag; |
239 | __be16 type; |
240 | }; |
241 | |
242 | struct { |
243 | int ; |
244 | struct ib_unpacked_lrh ; |
245 | int ; |
246 | struct ib_unpacked_eth ; |
247 | int ; |
248 | struct ib_unpacked_vlan ; |
249 | int ; |
250 | struct ib_unpacked_grh ; |
251 | int ; |
252 | struct ib_unpacked_ip4 ; |
253 | int ; |
254 | struct ib_unpacked_udp ; |
255 | struct ib_unpacked_bth ; |
256 | struct ib_unpacked_deth ; |
257 | int ; |
258 | __be32 ; |
259 | }; |
260 | |
261 | void ib_pack(const struct ib_field *desc, |
262 | int desc_len, |
263 | void *structure, |
264 | void *buf); |
265 | |
266 | void ib_unpack(const struct ib_field *desc, |
267 | int desc_len, |
268 | void *buf, |
269 | void *structure); |
270 | |
271 | __sum16 ib_ud_ip4_csum(struct ib_ud_header *); |
272 | |
273 | int (int payload_bytes, |
274 | int lrh_present, |
275 | int eth_present, |
276 | int vlan_present, |
277 | int grh_present, |
278 | int ip_version, |
279 | int udp_present, |
280 | int immediate_present, |
281 | struct ib_ud_header *); |
282 | |
283 | int (struct ib_ud_header *, |
284 | void *buf); |
285 | |
286 | int (void *buf, |
287 | struct ib_ud_header *); |
288 | |
289 | #endif /* IB_PACK_H */ |
290 | |