Commit | Line | Data |
---|---|---|
6bf9d8f6 | 1 | /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ |
1da177e4 LT |
2 | /* |
3 | * Copyright (c) 2004 Topspin Corporation. All rights reserved. | |
1da177e4 LT |
4 | */ |
5 | ||
6 | #ifndef IB_PACK_H | |
7 | #define IB_PACK_H | |
8 | ||
a4d61e84 | 9 | #include <rdma/ib_verbs.h> |
dd5f03be | 10 | #include <uapi/linux/if_ether.h> |
1da177e4 LT |
11 | |
12 | enum { | |
99260132 PP |
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 | |
1da177e4 LT |
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, | |
931cf9a3 | 57 | /* per IBTA 1.3 vol 1 Table 38, A10.3.2 */ |
d4ab3470 | 58 | IB_OPCODE_CNP = 0x80, |
243d9f43 DH |
59 | /* Manufacturer specific */ |
60 | IB_OPCODE_MSP = 0xe0, | |
1da177e4 LT |
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, | |
bf77cc34 JX |
84 | /* opcode 0x15 is reserved */ |
85 | IB_OPCODE_SEND_LAST_WITH_INVALIDATE = 0x16, | |
86 | IB_OPCODE_SEND_ONLY_WITH_INVALIDATE = 0x17, | |
208e3a13 | 87 | IB_OPCODE_FLUSH = 0x1C, |
3ff81e82 | 88 | IB_OPCODE_ATOMIC_WRITE = 0x1D, |
1da177e4 LT |
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), | |
bf77cc34 JX |
115 | IB_OPCODE(RC, SEND_LAST_WITH_INVALIDATE), |
116 | IB_OPCODE(RC, SEND_ONLY_WITH_INVALIDATE), | |
208e3a13 | 117 | IB_OPCODE(RC, FLUSH), |
3ff81e82 | 118 | IB_OPCODE(RC, ATOMIC_WRITE), |
1da177e4 LT |
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), | |
208e3a13 | 156 | IB_OPCODE(RD, FLUSH), |
1da177e4 LT |
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 link_next_header; | |
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 next_header; | |
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 transport_header_version; | |
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 | ||
ff7f5aab EC |
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 | ||
25f40220 MS |
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; | |
3ef967a4 | 225 | __sum16 check; |
25f40220 MS |
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 | ||
af7bd463 EC |
237 | struct ib_unpacked_vlan { |
238 | __be16 tag; | |
239 | __be16 type; | |
240 | }; | |
241 | ||
1da177e4 | 242 | struct ib_ud_header { |
ff7f5aab | 243 | int lrh_present; |
1da177e4 | 244 | struct ib_unpacked_lrh lrh; |
ff7f5aab EC |
245 | int eth_present; |
246 | struct ib_unpacked_eth eth; | |
af7bd463 EC |
247 | int vlan_present; |
248 | struct ib_unpacked_vlan vlan; | |
ff7f5aab EC |
249 | int grh_present; |
250 | struct ib_unpacked_grh grh; | |
25f40220 MS |
251 | int ipv4_present; |
252 | struct ib_unpacked_ip4 ip4; | |
253 | int udp_present; | |
254 | struct ib_unpacked_udp udp; | |
ff7f5aab | 255 | struct ib_unpacked_bth bth; |
1da177e4 | 256 | struct ib_unpacked_deth deth; |
ff7f5aab EC |
257 | int immediate_present; |
258 | __be32 immediate_data; | |
1da177e4 LT |
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 | ||
3ef967a4 | 271 | __sum16 ib_ud_ip4_csum(struct ib_ud_header *header); |
25f40220 MS |
272 | |
273 | int ib_ud_header_init(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 *header); | |
1da177e4 LT |
282 | |
283 | int ib_ud_header_pack(struct ib_ud_header *header, | |
284 | void *buf); | |
285 | ||
286 | int ib_ud_header_unpack(void *buf, | |
287 | struct ib_ud_header *header); | |
288 | ||
289 | #endif /* IB_PACK_H */ |