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
|
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2015 6WIND S.A.
* Copyright 2015 Mellanox Technologies, Ltd
*/
#include <stddef.h>
#include <stdint.h>
#include <errno.h>
#include <string.h>
#include <assert.h>
/* Verbs header. */
/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
#ifdef PEDANTIC
#pragma GCC diagnostic ignored "-Wpedantic"
#endif
#include <infiniband/verbs.h>
#ifdef PEDANTIC
#pragma GCC diagnostic error "-Wpedantic"
#endif
#include <rte_malloc.h>
#include <rte_ethdev_driver.h>
#include "mlx5.h"
#include "mlx5_defs.h"
#include "mlx5_rxtx.h"
/**
* DPDK callback to update the RSS hash configuration.
*
* @param dev
* Pointer to Ethernet device structure.
* @param[in] rss_conf
* RSS configuration data.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_rss_hash_update(struct rte_eth_dev *dev,
struct rte_eth_rss_conf *rss_conf)
{
struct priv *priv = dev->data->dev_private;
unsigned int i;
unsigned int idx;
if (rss_conf->rss_hf & MLX5_RSS_HF_MASK) {
rte_errno = EINVAL;
return -rte_errno;
}
if (rss_conf->rss_key && rss_conf->rss_key_len) {
if (rss_conf->rss_key_len != MLX5_RSS_HASH_KEY_LEN) {
DRV_LOG(ERR,
"port %u RSS key len must be %s Bytes long",
dev->data->port_id,
RTE_STR(MLX5_RSS_HASH_KEY_LEN));
rte_errno = EINVAL;
return -rte_errno;
}
priv->rss_conf.rss_key = rte_realloc(priv->rss_conf.rss_key,
rss_conf->rss_key_len, 0);
if (!priv->rss_conf.rss_key) {
rte_errno = ENOMEM;
return -rte_errno;
}
memcpy(priv->rss_conf.rss_key, rss_conf->rss_key,
rss_conf->rss_key_len);
priv->rss_conf.rss_key_len = rss_conf->rss_key_len;
}
priv->rss_conf.rss_hf = rss_conf->rss_hf;
/* Enable the RSS hash in all Rx queues. */
for (i = 0, idx = 0; idx != priv->rxqs_n; ++i) {
if (!(*priv->rxqs)[i])
continue;
(*priv->rxqs)[i]->rss_hash = !!rss_conf->rss_hf &&
!!(dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS);
++idx;
}
return 0;
}
/**
* DPDK callback to get the RSS hash configuration.
*
* @param dev
* Pointer to Ethernet device structure.
* @param[in, out] rss_conf
* RSS configuration data.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_rss_hash_conf_get(struct rte_eth_dev *dev,
struct rte_eth_rss_conf *rss_conf)
{
struct priv *priv = dev->data->dev_private;
if (!rss_conf) {
rte_errno = EINVAL;
return -rte_errno;
}
if (rss_conf->rss_key &&
(rss_conf->rss_key_len >= priv->rss_conf.rss_key_len)) {
memcpy(rss_conf->rss_key, priv->rss_conf.rss_key,
priv->rss_conf.rss_key_len);
}
rss_conf->rss_key_len = priv->rss_conf.rss_key_len;
rss_conf->rss_hf = priv->rss_conf.rss_hf;
return 0;
}
/**
* Allocate/reallocate RETA index table.
*
* @param dev
* Pointer to Ethernet device.
* @praram reta_size
* The size of the array to allocate.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_rss_reta_index_resize(struct rte_eth_dev *dev, unsigned int reta_size)
{
struct priv *priv = dev->data->dev_private;
void *mem;
unsigned int old_size = priv->reta_idx_n;
if (priv->reta_idx_n == reta_size)
return 0;
mem = rte_realloc(priv->reta_idx,
reta_size * sizeof((*priv->reta_idx)[0]), 0);
if (!mem) {
rte_errno = ENOMEM;
return -rte_errno;
}
priv->reta_idx = mem;
priv->reta_idx_n = reta_size;
if (old_size < reta_size)
memset(&(*priv->reta_idx)[old_size], 0,
(reta_size - old_size) *
sizeof((*priv->reta_idx)[0]));
return 0;
}
/**
* DPDK callback to get the RETA indirection table.
*
* @param dev
* Pointer to Ethernet device structure.
* @param reta_conf
* Pointer to RETA configuration structure array.
* @param reta_size
* Size of the RETA table.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_dev_rss_reta_query(struct rte_eth_dev *dev,
struct rte_eth_rss_reta_entry64 *reta_conf,
uint16_t reta_size)
{
struct priv *priv = dev->data->dev_private;
unsigned int idx;
unsigned int i;
if (!reta_size || reta_size > priv->reta_idx_n) {
rte_errno = EINVAL;
return -rte_errno;
}
/* Fill each entry of the table even if its bit is not set. */
for (idx = 0, i = 0; (i != reta_size); ++i) {
idx = i / RTE_RETA_GROUP_SIZE;
reta_conf[idx].reta[i % RTE_RETA_GROUP_SIZE] =
(*priv->reta_idx)[i];
}
return 0;
}
/**
* DPDK callback to update the RETA indirection table.
*
* @param dev
* Pointer to Ethernet device structure.
* @param reta_conf
* Pointer to RETA configuration structure array.
* @param reta_size
* Size of the RETA table.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_dev_rss_reta_update(struct rte_eth_dev *dev,
struct rte_eth_rss_reta_entry64 *reta_conf,
uint16_t reta_size)
{
int ret;
struct priv *priv = dev->data->dev_private;
unsigned int idx;
unsigned int i;
unsigned int pos;
if (!reta_size) {
rte_errno = EINVAL;
return -rte_errno;
}
ret = mlx5_rss_reta_index_resize(dev, reta_size);
if (ret)
return ret;
for (idx = 0, i = 0; (i != reta_size); ++i) {
idx = i / RTE_RETA_GROUP_SIZE;
pos = i % RTE_RETA_GROUP_SIZE;
if (((reta_conf[idx].mask >> i) & 0x1) == 0)
continue;
assert(reta_conf[idx].reta[pos] < priv->rxqs_n);
(*priv->reta_idx)[i] = reta_conf[idx].reta[pos];
}
if (dev->data->dev_started) {
mlx5_dev_stop(dev);
return mlx5_dev_start(dev);
}
return 0;
}
|
