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
|
/*
* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef RXE_LOC_H
#define RXE_LOC_H
/* rxe_av.c */
int rxe_av_chk_attr(struct rxe_dev *rxe, struct ib_ah_attr *attr);
int rxe_av_from_attr(struct rxe_dev *rxe, u8 port_num,
struct rxe_av *av, struct ib_ah_attr *attr);
int rxe_av_to_attr(struct rxe_dev *rxe, struct rxe_av *av,
struct ib_ah_attr *attr);
int rxe_av_fill_ip_info(struct rxe_dev *rxe,
struct rxe_av *av,
struct ib_ah_attr *attr,
struct ib_gid_attr *sgid_attr,
union ib_gid *sgid);
struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt);
/* rxe_cq.c */
int rxe_cq_chk_attr(struct rxe_dev *rxe, struct rxe_cq *cq,
int cqe, int comp_vector, struct ib_udata *udata);
int rxe_cq_from_init(struct rxe_dev *rxe, struct rxe_cq *cq, int cqe,
int comp_vector, struct ib_ucontext *context,
struct ib_udata *udata);
int rxe_cq_resize_queue(struct rxe_cq *cq, int new_cqe, struct ib_udata *udata);
int rxe_cq_post(struct rxe_cq *cq, struct rxe_cqe *cqe, int solicited);
void rxe_cq_cleanup(struct rxe_pool_entry *arg);
/* rxe_mcast.c */
int rxe_mcast_get_grp(struct rxe_dev *rxe, union ib_gid *mgid,
struct rxe_mc_grp **grp_p);
int rxe_mcast_add_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
struct rxe_mc_grp *grp);
int rxe_mcast_drop_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
union ib_gid *mgid);
void rxe_drop_all_mcast_groups(struct rxe_qp *qp);
void rxe_mc_cleanup(struct rxe_pool_entry *arg);
/* rxe_mmap.c */
struct rxe_mmap_info {
struct list_head pending_mmaps;
struct ib_ucontext *context;
struct kref ref;
void *obj;
struct mminfo info;
};
void rxe_mmap_release(struct kref *ref);
struct rxe_mmap_info *rxe_create_mmap_info(struct rxe_dev *dev,
u32 size,
struct ib_ucontext *context,
void *obj);
int rxe_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
/* rxe_mr.c */
enum copy_direction {
to_mem_obj,
from_mem_obj,
};
int rxe_mem_init_dma(struct rxe_dev *rxe, struct rxe_pd *pd,
int access, struct rxe_mem *mem);
int rxe_mem_init_user(struct rxe_dev *rxe, struct rxe_pd *pd, u64 start,
u64 length, u64 iova, int access, struct ib_udata *udata,
struct rxe_mem *mr);
int rxe_mem_init_fast(struct rxe_dev *rxe, struct rxe_pd *pd,
int max_pages, struct rxe_mem *mem);
int rxe_mem_copy(struct rxe_mem *mem, u64 iova, void *addr,
int length, enum copy_direction dir, u32 *crcp);
int copy_data(struct rxe_dev *rxe, struct rxe_pd *pd, int access,
struct rxe_dma_info *dma, void *addr, int length,
enum copy_direction dir, u32 *crcp);
void *iova_to_vaddr(struct rxe_mem *mem, u64 iova, int length);
enum lookup_type {
lookup_local,
lookup_remote,
};
struct rxe_mem *lookup_mem(struct rxe_pd *pd, int access, u32 key,
enum lookup_type type);
int mem_check_range(struct rxe_mem *mem, u64 iova, size_t length);
int rxe_mem_map_pages(struct rxe_dev *rxe, struct rxe_mem *mem,
u64 *page, int num_pages, u64 iova);
void rxe_mem_cleanup(struct rxe_pool_entry *arg);
int advance_dma_data(struct rxe_dma_info *dma, unsigned int length);
/* rxe_net.c */
int rxe_loopback(struct sk_buff *skb);
int rxe_send(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
struct sk_buff *skb);
__be64 rxe_port_guid(struct rxe_dev *rxe);
struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
int paylen, struct rxe_pkt_info *pkt);
int rxe_prepare(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
struct sk_buff *skb, u32 *crc);
enum rdma_link_layer rxe_link_layer(struct rxe_dev *rxe, unsigned int port_num);
const char *rxe_parent_name(struct rxe_dev *rxe, unsigned int port_num);
struct device *rxe_dma_device(struct rxe_dev *rxe);
__be64 rxe_node_guid(struct rxe_dev *rxe);
int rxe_mcast_add(struct rxe_dev *rxe, union ib_gid *mgid);
int rxe_mcast_delete(struct rxe_dev *rxe, union ib_gid *mgid);
/* rxe_qp.c */
int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init);
int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
struct ib_qp_init_attr *init, struct ib_udata *udata,
struct ib_pd *ibpd);
int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init);
int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
struct ib_qp_attr *attr, int mask);
int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr,
int mask, struct ib_udata *udata);
int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask);
void rxe_qp_error(struct rxe_qp *qp);
void rxe_qp_destroy(struct rxe_qp *qp);
void rxe_qp_cleanup(struct rxe_pool_entry *arg);
static inline int qp_num(struct rxe_qp *qp)
{
return qp->ibqp.qp_num;
}
static inline enum ib_qp_type qp_type(struct rxe_qp *qp)
{
return qp->ibqp.qp_type;
}
static inline enum ib_qp_state qp_state(struct rxe_qp *qp)
{
return qp->attr.qp_state;
}
static inline int qp_mtu(struct rxe_qp *qp)
{
if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC)
return qp->attr.path_mtu;
else
return RXE_PORT_MAX_MTU;
}
static inline int rcv_wqe_size(int max_sge)
{
return sizeof(struct rxe_recv_wqe) +
max_sge * sizeof(struct ib_sge);
}
void free_rd_atomic_resource(struct rxe_qp *qp, struct resp_res *res);
static inline void rxe_advance_resp_resource(struct rxe_qp *qp)
{
qp->resp.res_head++;
if (unlikely(qp->resp.res_head == qp->attr.max_dest_rd_atomic))
qp->resp.res_head = 0;
}
void retransmit_timer(unsigned long data);
void rnr_nak_timer(unsigned long data);
void dump_qp(struct rxe_qp *qp);
/* rxe_srq.c */
#define IB_SRQ_INIT_MASK (~IB_SRQ_LIMIT)
int rxe_srq_chk_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
struct ib_srq_attr *attr, enum ib_srq_attr_mask mask);
int rxe_srq_from_init(struct rxe_dev *rxe, struct rxe_srq *srq,
struct ib_srq_init_attr *init,
struct ib_ucontext *context, struct ib_udata *udata);
int rxe_srq_from_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
struct ib_srq_attr *attr, enum ib_srq_attr_mask mask,
struct ib_udata *udata);
extern struct ib_dma_mapping_ops rxe_dma_mapping_ops;
void rxe_release(struct kref *kref);
void rxe_drain_req_pkts(struct rxe_qp *qp, bool notify);
int rxe_completer(void *arg);
int rxe_requester(void *arg);
int rxe_responder(void *arg);
u32 rxe_icrc_hdr(struct rxe_pkt_info *pkt, struct sk_buff *skb);
void rxe_resp_queue_pkt(struct rxe_dev *rxe,
struct rxe_qp *qp, struct sk_buff *skb);
void rxe_comp_queue_pkt(struct rxe_dev *rxe,
struct rxe_qp *qp, struct sk_buff *skb);
static inline unsigned wr_opcode_mask(int opcode, struct rxe_qp *qp)
{
return rxe_wr_opcode_info[opcode].mask[qp->ibqp.qp_type];
}
static inline int rxe_xmit_packet(struct rxe_dev *rxe, struct rxe_qp *qp,
struct rxe_pkt_info *pkt, struct sk_buff *skb)
{
int err;
int is_request = pkt->mask & RXE_REQ_MASK;
if ((is_request && (qp->req.state != QP_STATE_READY)) ||
(!is_request && (qp->resp.state != QP_STATE_READY))) {
pr_info("Packet dropped. QP is not in ready state\n");
goto drop;
}
if (pkt->mask & RXE_LOOPBACK_MASK) {
memcpy(SKB_TO_PKT(skb), pkt, sizeof(*pkt));
err = rxe_loopback(skb);
} else {
err = rxe_send(rxe, pkt, skb);
}
if (err) {
rxe->xmit_errors++;
return err;
}
if ((qp_type(qp) != IB_QPT_RC) &&
(pkt->mask & RXE_END_MASK)) {
pkt->wqe->state = wqe_state_done;
rxe_run_task(&qp->comp.task, 1);
}
goto done;
drop:
kfree_skb(skb);
err = 0;
done:
return err;
}
#endif /* RXE_LOC_H */
|
