1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-O 1
2 /*
3 * Copyright (c) 2004 Topspin Corporation. Al
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 con
40 * It is used to define constants such as IB_O
41 * which becomes IB_OPCODE_UD + IB_OPCODE_SEND
42 * the correct value.
43 *
44 * In short, user code should use the constant
45 * macro rather than worrying about adding tog
46 */
47 #define IB_OPCODE(transport, op) \
48 IB_OPCODE_ ## transport ## _ ## op = \
49 IB_OPCODE_ ## transport + IB_O
50
51 enum {
52 /* transport types -- just used to def
53 IB_OPCODE_RC
54 IB_OPCODE_UC
55 IB_OPCODE_RD
56 IB_OPCODE_UD
57 /* per IBTA 1.3 vol 1 Table 38, A10.3.
58 IB_OPCODE_CNP
59 /* Manufacturer specific */
60 IB_OPCODE_MSP
61
62 /* operations -- just used to define r
63 IB_OPCODE_SEND_FIRST
64 IB_OPCODE_SEND_MIDDLE
65 IB_OPCODE_SEND_LAST
66 IB_OPCODE_SEND_LAST_WITH_IMMEDIATE
67 IB_OPCODE_SEND_ONLY
68 IB_OPCODE_SEND_ONLY_WITH_IMMEDIATE
69 IB_OPCODE_RDMA_WRITE_FIRST
70 IB_OPCODE_RDMA_WRITE_MIDDLE
71 IB_OPCODE_RDMA_WRITE_LAST
72 IB_OPCODE_RDMA_WRITE_LAST_WITH_IMMEDIA
73 IB_OPCODE_RDMA_WRITE_ONLY
74 IB_OPCODE_RDMA_WRITE_ONLY_WITH_IMMEDIA
75 IB_OPCODE_RDMA_READ_REQUEST
76 IB_OPCODE_RDMA_READ_RESPONSE_FIRST
77 IB_OPCODE_RDMA_READ_RESPONSE_MIDDLE
78 IB_OPCODE_RDMA_READ_RESPONSE_LAST
79 IB_OPCODE_RDMA_READ_RESPONSE_ONLY
80 IB_OPCODE_ACKNOWLEDGE
81 IB_OPCODE_ATOMIC_ACKNOWLEDGE
82 IB_OPCODE_COMPARE_SWAP
83 IB_OPCODE_FETCH_ADD
84 /* opcode 0x15 is reserved */
85 IB_OPCODE_SEND_LAST_WITH_INVALIDATE
86 IB_OPCODE_SEND_ONLY_WITH_INVALIDATE
87 IB_OPCODE_FLUSH
88 IB_OPCODE_ATOMIC_WRITE
89
90 /* real constants follow -- see commen
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_IMM
104 IB_OPCODE(RC, RDMA_WRITE_ONLY),
105 IB_OPCODE(RC, RDMA_WRITE_ONLY_WITH_IMM
106 IB_OPCODE(RC, RDMA_READ_REQUEST),
107 IB_OPCODE(RC, RDMA_READ_RESPONSE_FIRST
108 IB_OPCODE(RC, RDMA_READ_RESPONSE_MIDDL
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_INVALIDAT
116 IB_OPCODE(RC, SEND_ONLY_WITH_INVALIDAT
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_IMM
131 IB_OPCODE(UC, RDMA_WRITE_ONLY),
132 IB_OPCODE(UC, RDMA_WRITE_ONLY_WITH_IMM
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_IMM
145 IB_OPCODE(RD, RDMA_WRITE_ONLY),
146 IB_OPCODE(RD, RDMA_WRITE_ONLY_WITH_IMM
147 IB_OPCODE(RD, RDMA_READ_REQUEST),
148 IB_OPCODE(RD, RDMA_READ_RESPONSE_FIRST
149 IB_OPCODE(RD, RDMA_READ_RESPONSE_MIDDL
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 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
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 ib_ud_header {
243 int lrh_present;
244 struct ib_unpacked_lrh lrh;
245 int eth_present;
246 struct ib_unpacked_eth eth;
247 int vlan_present;
248 struct ib_unpacked_vlan vlan;
249 int grh_present;
250 struct ib_unpacked_grh grh;
251 int ipv4_present;
252 struct ib_unpacked_ip4 ip4;
253 int udp_present;
254 struct ib_unpacked_udp udp;
255 struct ib_unpacked_bth bth;
256 struct ib_unpacked_deth deth;
257 int immediate_pres
258 __be32 immediate_data
259 };
260
261 void ib_pack(const struct ib_field *des
262 int des
263 void *str
264 void *buf
265
266 void ib_unpack(const struct ib_field *d
267 int d
268 void *b
269 void *s
270
271 __sum16 ib_ud_ip4_csum(struct ib_ud_header *he
272
273 int ib_ud_header_init(int pa
274 int lr
275 int et
276 int vl
277 int gr
278 int ip
279 int ud
280 int im
281 struct ib_ud_header *hea
282
283 int ib_ud_header_pack(struct ib_ud_header *hea
284 void *buf
285
286 int ib_ud_header_unpack(void *b
287 struct ib_ud_header *h
288
289 #endif /* IB_PACK_H */
290
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