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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
12enum {
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
26struct 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"
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38
39
40
41
42
43
44
45
46
47#define IB_OPCODE(transport, op) \
48 IB_OPCODE_ ## transport ## _ ## op = \
49 IB_OPCODE_ ## transport + IB_OPCODE_ ## op
50
51enum {
52
53 IB_OPCODE_RC = 0x00,
54 IB_OPCODE_UC = 0x20,
55 IB_OPCODE_RD = 0x40,
56 IB_OPCODE_UD = 0x60,
57
58 IB_OPCODE_CNP = 0x80,
59
60 IB_OPCODE_MSP = 0xe0,
61
62
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
85 IB_OPCODE_SEND_LAST_WITH_INVALIDATE = 0x16,
86 IB_OPCODE_SEND_ONLY_WITH_INVALIDATE = 0x17,
87
88
89
90
91
92 IB_OPCODE(RC, SEND_FIRST),
93 IB_OPCODE(RC, SEND_MIDDLE),
94 IB_OPCODE(RC, SEND_LAST),
95 IB_OPCODE(RC, SEND_LAST_WITH_IMMEDIATE),
96 IB_OPCODE(RC, SEND_ONLY),
97 IB_OPCODE(RC, SEND_ONLY_WITH_IMMEDIATE),
98 IB_OPCODE(RC, RDMA_WRITE_FIRST),
99 IB_OPCODE(RC, RDMA_WRITE_MIDDLE),
100 IB_OPCODE(RC, RDMA_WRITE_LAST),
101 IB_OPCODE(RC, RDMA_WRITE_LAST_WITH_IMMEDIATE),
102 IB_OPCODE(RC, RDMA_WRITE_ONLY),
103 IB_OPCODE(RC, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
104 IB_OPCODE(RC, RDMA_READ_REQUEST),
105 IB_OPCODE(RC, RDMA_READ_RESPONSE_FIRST),
106 IB_OPCODE(RC, RDMA_READ_RESPONSE_MIDDLE),
107 IB_OPCODE(RC, RDMA_READ_RESPONSE_LAST),
108 IB_OPCODE(RC, RDMA_READ_RESPONSE_ONLY),
109 IB_OPCODE(RC, ACKNOWLEDGE),
110 IB_OPCODE(RC, ATOMIC_ACKNOWLEDGE),
111 IB_OPCODE(RC, COMPARE_SWAP),
112 IB_OPCODE(RC, FETCH_ADD),
113 IB_OPCODE(RC, SEND_LAST_WITH_INVALIDATE),
114 IB_OPCODE(RC, SEND_ONLY_WITH_INVALIDATE),
115
116
117 IB_OPCODE(UC, SEND_FIRST),
118 IB_OPCODE(UC, SEND_MIDDLE),
119 IB_OPCODE(UC, SEND_LAST),
120 IB_OPCODE(UC, SEND_LAST_WITH_IMMEDIATE),
121 IB_OPCODE(UC, SEND_ONLY),
122 IB_OPCODE(UC, SEND_ONLY_WITH_IMMEDIATE),
123 IB_OPCODE(UC, RDMA_WRITE_FIRST),
124 IB_OPCODE(UC, RDMA_WRITE_MIDDLE),
125 IB_OPCODE(UC, RDMA_WRITE_LAST),
126 IB_OPCODE(UC, RDMA_WRITE_LAST_WITH_IMMEDIATE),
127 IB_OPCODE(UC, RDMA_WRITE_ONLY),
128 IB_OPCODE(UC, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
129
130
131 IB_OPCODE(RD, SEND_FIRST),
132 IB_OPCODE(RD, SEND_MIDDLE),
133 IB_OPCODE(RD, SEND_LAST),
134 IB_OPCODE(RD, SEND_LAST_WITH_IMMEDIATE),
135 IB_OPCODE(RD, SEND_ONLY),
136 IB_OPCODE(RD, SEND_ONLY_WITH_IMMEDIATE),
137 IB_OPCODE(RD, RDMA_WRITE_FIRST),
138 IB_OPCODE(RD, RDMA_WRITE_MIDDLE),
139 IB_OPCODE(RD, RDMA_WRITE_LAST),
140 IB_OPCODE(RD, RDMA_WRITE_LAST_WITH_IMMEDIATE),
141 IB_OPCODE(RD, RDMA_WRITE_ONLY),
142 IB_OPCODE(RD, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
143 IB_OPCODE(RD, RDMA_READ_REQUEST),
144 IB_OPCODE(RD, RDMA_READ_RESPONSE_FIRST),
145 IB_OPCODE(RD, RDMA_READ_RESPONSE_MIDDLE),
146 IB_OPCODE(RD, RDMA_READ_RESPONSE_LAST),
147 IB_OPCODE(RD, RDMA_READ_RESPONSE_ONLY),
148 IB_OPCODE(RD, ACKNOWLEDGE),
149 IB_OPCODE(RD, ATOMIC_ACKNOWLEDGE),
150 IB_OPCODE(RD, COMPARE_SWAP),
151 IB_OPCODE(RD, FETCH_ADD),
152
153
154 IB_OPCODE(UD, SEND_ONLY),
155 IB_OPCODE(UD, SEND_ONLY_WITH_IMMEDIATE)
156};
157
158enum {
159 IB_LNH_RAW = 0,
160 IB_LNH_IP = 1,
161 IB_LNH_IBA_LOCAL = 2,
162 IB_LNH_IBA_GLOBAL = 3
163};
164
165struct ib_unpacked_lrh {
166 u8 virtual_lane;
167 u8 link_version;
168 u8 service_level;
169 u8 link_next_header;
170 __be16 destination_lid;
171 __be16 packet_length;
172 __be16 source_lid;
173};
174
175struct ib_unpacked_grh {
176 u8 ip_version;
177 u8 traffic_class;
178 __be32 flow_label;
179 __be16 payload_length;
180 u8 next_header;
181 u8 hop_limit;
182 union ib_gid source_gid;
183 union ib_gid destination_gid;
184};
185
186struct ib_unpacked_bth {
187 u8 opcode;
188 u8 solicited_event;
189 u8 mig_req;
190 u8 pad_count;
191 u8 transport_header_version;
192 __be16 pkey;
193 __be32 destination_qpn;
194 u8 ack_req;
195 __be32 psn;
196};
197
198struct ib_unpacked_deth {
199 __be32 qkey;
200 __be32 source_qpn;
201};
202
203struct ib_unpacked_eth {
204 u8 dmac_h[4];
205 u8 dmac_l[2];
206 u8 smac_h[2];
207 u8 smac_l[4];
208 __be16 type;
209};
210
211struct ib_unpacked_ip4 {
212 u8 ver;
213 u8 hdr_len;
214 u8 tos;
215 __be16 tot_len;
216 __be16 id;
217 __be16 frag_off;
218 u8 ttl;
219 u8 protocol;
220 __sum16 check;
221 __be32 saddr;
222 __be32 daddr;
223};
224
225struct ib_unpacked_udp {
226 __be16 sport;
227 __be16 dport;
228 __be16 length;
229 __be16 csum;
230};
231
232struct ib_unpacked_vlan {
233 __be16 tag;
234 __be16 type;
235};
236
237struct ib_ud_header {
238 int lrh_present;
239 struct ib_unpacked_lrh lrh;
240 int eth_present;
241 struct ib_unpacked_eth eth;
242 int vlan_present;
243 struct ib_unpacked_vlan vlan;
244 int grh_present;
245 struct ib_unpacked_grh grh;
246 int ipv4_present;
247 struct ib_unpacked_ip4 ip4;
248 int udp_present;
249 struct ib_unpacked_udp udp;
250 struct ib_unpacked_bth bth;
251 struct ib_unpacked_deth deth;
252 int immediate_present;
253 __be32 immediate_data;
254};
255
256void ib_pack(const struct ib_field *desc,
257 int desc_len,
258 void *structure,
259 void *buf);
260
261void ib_unpack(const struct ib_field *desc,
262 int desc_len,
263 void *buf,
264 void *structure);
265
266__sum16 ib_ud_ip4_csum(struct ib_ud_header *header);
267
268int ib_ud_header_init(int payload_bytes,
269 int lrh_present,
270 int eth_present,
271 int vlan_present,
272 int grh_present,
273 int ip_version,
274 int udp_present,
275 int immediate_present,
276 struct ib_ud_header *header);
277
278int ib_ud_header_pack(struct ib_ud_header *header,
279 void *buf);
280
281int ib_ud_header_unpack(void *buf,
282 struct ib_ud_header *header);
283
284#endif
285
