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
|
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2017 Intel Corporation
*/
#include <rte_cryptodev.h>
#include <rte_malloc.h>
#include "rte_cryptodev_scheduler_operations.h"
#include "scheduler_pmd_private.h"
#define PRIMARY_SLAVE_IDX 0
#define SECONDARY_SLAVE_IDX 1
#define NB_FAILOVER_SLAVES 2
#define SLAVE_SWITCH_MASK (0x01)
struct fo_scheduler_qp_ctx {
struct scheduler_slave primary_slave;
struct scheduler_slave secondary_slave;
uint8_t deq_idx;
};
static __rte_always_inline uint16_t
failover_slave_enqueue(struct scheduler_slave *slave,
struct rte_crypto_op **ops, uint16_t nb_ops)
{
uint16_t i, processed_ops;
for (i = 0; i < nb_ops && i < 4; i++)
rte_prefetch0(ops[i]->sym->session);
processed_ops = rte_cryptodev_enqueue_burst(slave->dev_id,
slave->qp_id, ops, nb_ops);
slave->nb_inflight_cops += processed_ops;
return processed_ops;
}
static uint16_t
schedule_enqueue(void *qp, struct rte_crypto_op **ops, uint16_t nb_ops)
{
struct fo_scheduler_qp_ctx *qp_ctx =
((struct scheduler_qp_ctx *)qp)->private_qp_ctx;
uint16_t enqueued_ops;
if (unlikely(nb_ops == 0))
return 0;
enqueued_ops = failover_slave_enqueue(&qp_ctx->primary_slave,
ops, nb_ops);
if (enqueued_ops < nb_ops)
enqueued_ops += failover_slave_enqueue(&qp_ctx->secondary_slave,
&ops[enqueued_ops],
nb_ops - enqueued_ops);
return enqueued_ops;
}
static uint16_t
schedule_enqueue_ordering(void *qp, struct rte_crypto_op **ops,
uint16_t nb_ops)
{
struct rte_ring *order_ring =
((struct scheduler_qp_ctx *)qp)->order_ring;
uint16_t nb_ops_to_enq = get_max_enqueue_order_count(order_ring,
nb_ops);
uint16_t nb_ops_enqd = schedule_enqueue(qp, ops,
nb_ops_to_enq);
scheduler_order_insert(order_ring, ops, nb_ops_enqd);
return nb_ops_enqd;
}
static uint16_t
schedule_dequeue(void *qp, struct rte_crypto_op **ops, uint16_t nb_ops)
{
struct fo_scheduler_qp_ctx *qp_ctx =
((struct scheduler_qp_ctx *)qp)->private_qp_ctx;
struct scheduler_slave *slaves[NB_FAILOVER_SLAVES] = {
&qp_ctx->primary_slave, &qp_ctx->secondary_slave};
struct scheduler_slave *slave = slaves[qp_ctx->deq_idx];
uint16_t nb_deq_ops = 0, nb_deq_ops2 = 0;
if (slave->nb_inflight_cops) {
nb_deq_ops = rte_cryptodev_dequeue_burst(slave->dev_id,
slave->qp_id, ops, nb_ops);
slave->nb_inflight_cops -= nb_deq_ops;
}
qp_ctx->deq_idx = (~qp_ctx->deq_idx) & SLAVE_SWITCH_MASK;
if (nb_deq_ops == nb_ops)
return nb_deq_ops;
slave = slaves[qp_ctx->deq_idx];
if (slave->nb_inflight_cops) {
nb_deq_ops2 = rte_cryptodev_dequeue_burst(slave->dev_id,
slave->qp_id, &ops[nb_deq_ops], nb_ops - nb_deq_ops);
slave->nb_inflight_cops -= nb_deq_ops2;
}
return nb_deq_ops + nb_deq_ops2;
}
static uint16_t
schedule_dequeue_ordering(void *qp, struct rte_crypto_op **ops,
uint16_t nb_ops)
{
struct rte_ring *order_ring =
((struct scheduler_qp_ctx *)qp)->order_ring;
schedule_dequeue(qp, ops, nb_ops);
return scheduler_order_drain(order_ring, ops, nb_ops);
}
static int
slave_attach(__rte_unused struct rte_cryptodev *dev,
__rte_unused uint8_t slave_id)
{
return 0;
}
static int
slave_detach(__rte_unused struct rte_cryptodev *dev,
__rte_unused uint8_t slave_id)
{
return 0;
}
static int
scheduler_start(struct rte_cryptodev *dev)
{
struct scheduler_ctx *sched_ctx = dev->data->dev_private;
uint16_t i;
if (sched_ctx->nb_slaves < 2) {
CS_LOG_ERR("Number of slaves shall no less than 2");
return -ENOMEM;
}
if (sched_ctx->reordering_enabled) {
dev->enqueue_burst = schedule_enqueue_ordering;
dev->dequeue_burst = schedule_dequeue_ordering;
} else {
dev->enqueue_burst = schedule_enqueue;
dev->dequeue_burst = schedule_dequeue;
}
for (i = 0; i < dev->data->nb_queue_pairs; i++) {
struct fo_scheduler_qp_ctx *qp_ctx =
((struct scheduler_qp_ctx *)
dev->data->queue_pairs[i])->private_qp_ctx;
rte_memcpy(&qp_ctx->primary_slave,
&sched_ctx->slaves[PRIMARY_SLAVE_IDX],
sizeof(struct scheduler_slave));
rte_memcpy(&qp_ctx->secondary_slave,
&sched_ctx->slaves[SECONDARY_SLAVE_IDX],
sizeof(struct scheduler_slave));
}
return 0;
}
static int
scheduler_stop(__rte_unused struct rte_cryptodev *dev)
{
return 0;
}
static int
scheduler_config_qp(struct rte_cryptodev *dev, uint16_t qp_id)
{
struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[qp_id];
struct fo_scheduler_qp_ctx *fo_qp_ctx;
fo_qp_ctx = rte_zmalloc_socket(NULL, sizeof(*fo_qp_ctx), 0,
rte_socket_id());
if (!fo_qp_ctx) {
CS_LOG_ERR("failed allocate memory for private queue pair");
return -ENOMEM;
}
qp_ctx->private_qp_ctx = (void *)fo_qp_ctx;
return 0;
}
static int
scheduler_create_private_ctx(__rte_unused struct rte_cryptodev *dev)
{
return 0;
}
struct rte_cryptodev_scheduler_ops scheduler_fo_ops = {
slave_attach,
slave_detach,
scheduler_start,
scheduler_stop,
scheduler_config_qp,
scheduler_create_private_ctx,
NULL, /* option_set */
NULL /*option_get */
};
struct rte_cryptodev_scheduler fo_scheduler = {
.name = "failover-scheduler",
.description = "scheduler which enqueues to the primary slave, "
"and only then enqueues to the secondary slave "
"upon failing on enqueuing to primary",
.mode = CDEV_SCHED_MODE_FAILOVER,
.ops = &scheduler_fo_ops
};
struct rte_cryptodev_scheduler *failover_scheduler = &fo_scheduler;
|
