blob: 8ae07c0ecdf7ef1711cfd91299ac5c1001346cdf (
plain)
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
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
|
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright(c) 2016 - 2018 Intel Corporation.
*/
#ifndef IB_HDRS_H
#define IB_HDRS_H
#include <linux/types.h>
#include <asm/unaligned.h>
#include <rdma/ib_verbs.h>
#define IB_SEQ_NAK (3 << 29)
/* AETH NAK opcode values */
#define IB_RNR_NAK 0x20
#define IB_NAK_PSN_ERROR 0x60
#define IB_NAK_INVALID_REQUEST 0x61
#define IB_NAK_REMOTE_ACCESS_ERROR 0x62
#define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
#define IB_NAK_INVALID_RD_REQUEST 0x64
#define IB_BTH_REQ_ACK BIT(31)
#define IB_BTH_SOLICITED BIT(23)
#define IB_BTH_MIG_REQ BIT(22)
#define IB_GRH_VERSION 6
#define IB_GRH_VERSION_MASK 0xF
#define IB_GRH_VERSION_SHIFT 28
#define IB_GRH_TCLASS_MASK 0xFF
#define IB_GRH_TCLASS_SHIFT 20
#define IB_GRH_FLOW_MASK 0xFFFFF
#define IB_GRH_FLOW_SHIFT 0
#define IB_GRH_NEXT_HDR 0x1B
#define IB_FECN_SHIFT 31
#define IB_FECN_MASK 1
#define IB_FECN_SMASK BIT(IB_FECN_SHIFT)
#define IB_BECN_SHIFT 30
#define IB_BECN_MASK 1
#define IB_BECN_SMASK BIT(IB_BECN_SHIFT)
#define IB_AETH_CREDIT_SHIFT 24
#define IB_AETH_CREDIT_MASK 0x1F
#define IB_AETH_CREDIT_INVAL 0x1F
#define IB_AETH_NAK_SHIFT 29
#define IB_MSN_MASK 0xFFFFFF
struct ib_reth {
__be64 vaddr; /* potentially unaligned */
__be32 rkey;
__be32 length;
} __packed;
struct ib_atomic_eth {
__be64 vaddr; /* potentially unaligned */
__be32 rkey;
__be64 swap_data; /* potentially unaligned */
__be64 compare_data; /* potentially unaligned */
} __packed;
#include <rdma/tid_rdma_defs.h>
union ib_ehdrs {
struct {
__be32 deth[2];
__be32 imm_data;
} ud;
struct {
struct ib_reth reth;
__be32 imm_data;
} rc;
struct {
__be32 aeth;
__be64 atomic_ack_eth; /* potentially unaligned */
} __packed at;
__be32 imm_data;
__be32 aeth;
__be32 ieth;
struct ib_atomic_eth atomic_eth;
/* TID RDMA headers */
union {
struct tid_rdma_read_req r_req;
struct tid_rdma_read_resp r_rsp;
struct tid_rdma_write_req w_req;
struct tid_rdma_write_resp w_rsp;
struct tid_rdma_write_data w_data;
struct tid_rdma_resync resync;
struct tid_rdma_ack ack;
} tid_rdma;
} __packed;
struct ib_other_headers {
__be32 bth[3];
union ib_ehdrs u;
} __packed;
struct ib_header {
__be16 lrh[4];
union {
struct {
struct ib_grh grh;
struct ib_other_headers oth;
} l;
struct ib_other_headers oth;
} u;
} __packed;
/* accessors for unaligned __be64 items */
static inline u64 ib_u64_get(__be64 *p)
{
return get_unaligned_be64(p);
}
static inline void ib_u64_put(u64 val, __be64 *p)
{
put_unaligned_be64(val, p);
}
static inline u64 get_ib_reth_vaddr(struct ib_reth *reth)
{
return ib_u64_get(&reth->vaddr);
}
static inline void put_ib_reth_vaddr(u64 val, struct ib_reth *reth)
{
ib_u64_put(val, &reth->vaddr);
}
static inline u64 get_ib_ateth_vaddr(struct ib_atomic_eth *ateth)
{
return ib_u64_get(&ateth->vaddr);
}
static inline void put_ib_ateth_vaddr(u64 val, struct ib_atomic_eth *ateth)
{
ib_u64_put(val, &ateth->vaddr);
}
static inline u64 get_ib_ateth_swap(struct ib_atomic_eth *ateth)
{
return ib_u64_get(&ateth->swap_data);
}
static inline void put_ib_ateth_swap(u64 val, struct ib_atomic_eth *ateth)
{
ib_u64_put(val, &ateth->swap_data);
}
static inline u64 get_ib_ateth_compare(struct ib_atomic_eth *ateth)
{
return ib_u64_get(&ateth->compare_data);
}
static inline void put_ib_ateth_compare(u64 val, struct ib_atomic_eth *ateth)
{
ib_u64_put(val, &ateth->compare_data);
}
/*
* 9B/IB Packet Format
*/
#define IB_LNH_MASK 3
#define IB_SC_MASK 0xf
#define IB_SC_SHIFT 12
#define IB_SC5_MASK 0x10
#define IB_SL_MASK 0xf
#define IB_SL_SHIFT 4
#define IB_SL_SHIFT 4
#define IB_LVER_MASK 0xf
#define IB_LVER_SHIFT 8
static inline u8 ib_get_lnh(struct ib_header *hdr)
{
return (be16_to_cpu(hdr->lrh[0]) & IB_LNH_MASK);
}
static inline u8 ib_get_sc(struct ib_header *hdr)
{
return ((be16_to_cpu(hdr->lrh[0]) >> IB_SC_SHIFT) & IB_SC_MASK);
}
static inline bool ib_is_sc5(u16 sc5)
{
return !!(sc5 & IB_SC5_MASK);
}
static inline u8 ib_get_sl(struct ib_header *hdr)
{
return ((be16_to_cpu(hdr->lrh[0]) >> IB_SL_SHIFT) & IB_SL_MASK);
}
static inline u16 ib_get_dlid(struct ib_header *hdr)
{
return (be16_to_cpu(hdr->lrh[1]));
}
static inline u16 ib_get_slid(struct ib_header *hdr)
{
return (be16_to_cpu(hdr->lrh[3]));
}
static inline u8 ib_get_lver(struct ib_header *hdr)
{
return (u8)((be16_to_cpu(hdr->lrh[0]) >> IB_LVER_SHIFT) &
IB_LVER_MASK);
}
static inline u32 ib_get_qkey(struct ib_other_headers *ohdr)
{
return be32_to_cpu(ohdr->u.ud.deth[0]);
}
static inline u32 ib_get_sqpn(struct ib_other_headers *ohdr)
{
return ((be32_to_cpu(ohdr->u.ud.deth[1])) & IB_QPN_MASK);
}
/*
* BTH
*/
#define IB_BTH_OPCODE_MASK 0xff
#define IB_BTH_OPCODE_SHIFT 24
#define IB_BTH_PAD_MASK 3
#define IB_BTH_PKEY_MASK 0xffff
#define IB_BTH_PAD_SHIFT 20
#define IB_BTH_A_MASK 1
#define IB_BTH_A_SHIFT 31
#define IB_BTH_M_MASK 1
#define IB_BTH_M_SHIFT 22
#define IB_BTH_SE_MASK 1
#define IB_BTH_SE_SHIFT 23
#define IB_BTH_TVER_MASK 0xf
#define IB_BTH_TVER_SHIFT 16
#define IB_BTH_OPCODE_CNP 0x81
static inline u8 ib_bth_get_pad(struct ib_other_headers *ohdr)
{
return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_PAD_SHIFT) &
IB_BTH_PAD_MASK);
}
static inline u16 ib_bth_get_pkey(struct ib_other_headers *ohdr)
{
return (be32_to_cpu(ohdr->bth[0]) & IB_BTH_PKEY_MASK);
}
static inline u8 ib_bth_get_opcode(struct ib_other_headers *ohdr)
{
return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_OPCODE_SHIFT) &
IB_BTH_OPCODE_MASK);
}
static inline u8 ib_bth_get_ackreq(struct ib_other_headers *ohdr)
{
return (u8)((be32_to_cpu(ohdr->bth[2]) >> IB_BTH_A_SHIFT) &
IB_BTH_A_MASK);
}
static inline u8 ib_bth_get_migreq(struct ib_other_headers *ohdr)
{
return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_M_SHIFT) &
IB_BTH_M_MASK);
}
static inline u8 ib_bth_get_se(struct ib_other_headers *ohdr)
{
return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_SE_SHIFT) &
IB_BTH_SE_MASK);
}
static inline u32 ib_bth_get_psn(struct ib_other_headers *ohdr)
{
return (u32)(be32_to_cpu(ohdr->bth[2]));
}
static inline u32 ib_bth_get_qpn(struct ib_other_headers *ohdr)
{
return (u32)((be32_to_cpu(ohdr->bth[1])) & IB_QPN_MASK);
}
static inline bool ib_bth_get_becn(struct ib_other_headers *ohdr)
{
return (ohdr->bth[1]) & cpu_to_be32(IB_BECN_SMASK);
}
static inline bool ib_bth_get_fecn(struct ib_other_headers *ohdr)
{
return (ohdr->bth[1]) & cpu_to_be32(IB_FECN_SMASK);
}
static inline u8 ib_bth_get_tver(struct ib_other_headers *ohdr)
{
return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_TVER_SHIFT) &
IB_BTH_TVER_MASK);
}
static inline bool ib_bth_is_solicited(struct ib_other_headers *ohdr)
{
return ohdr->bth[0] & cpu_to_be32(IB_BTH_SOLICITED);
}
static inline bool ib_bth_is_migration(struct ib_other_headers *ohdr)
{
return ohdr->bth[0] & cpu_to_be32(IB_BTH_MIG_REQ);
}
#endif /* IB_HDRS_H */
|
