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)
#include "dpaa2-eth.h"
/* Copyright 2020 NXP
*/
#define DPAA2_ETH_TRAP_DROP(_id, _group_id) \
DEVLINK_TRAP_GENERIC(DROP, DROP, _id, \
DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, 0)
static const struct devlink_trap_group dpaa2_eth_trap_groups_arr[] = {
DEVLINK_TRAP_GROUP_GENERIC(PARSER_ERROR_DROPS, 0),
};
static const struct devlink_trap dpaa2_eth_traps_arr[] = {
DPAA2_ETH_TRAP_DROP(VXLAN_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(LLC_SNAP_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(VLAN_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(PPPOE_PPP_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(MPLS_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(ARP_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(IP_1_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(IP_N_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(GRE_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(UDP_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(TCP_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(IPSEC_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(SCTP_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(DCCP_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(GTP_PARSING, PARSER_ERROR_DROPS),
DPAA2_ETH_TRAP_DROP(ESP_PARSING, PARSER_ERROR_DROPS),
};
static int dpaa2_eth_dl_info_get(struct devlink *devlink,
struct devlink_info_req *req,
struct netlink_ext_ack *extack)
{
struct dpaa2_eth_devlink_priv *dl_priv = devlink_priv(devlink);
struct dpaa2_eth_priv *priv = dl_priv->dpaa2_priv;
char buf[10];
int err;
err = devlink_info_driver_name_put(req, KBUILD_MODNAME);
if (err)
return err;
scnprintf(buf, 10, "%d.%d", priv->dpni_ver_major, priv->dpni_ver_minor);
err = devlink_info_version_running_put(req, "dpni", buf);
if (err)
return err;
return 0;
}
static struct dpaa2_eth_trap_item *
dpaa2_eth_dl_trap_item_lookup(struct dpaa2_eth_priv *priv, u16 trap_id)
{
struct dpaa2_eth_trap_data *dpaa2_eth_trap_data = priv->trap_data;
int i;
for (i = 0; i < ARRAY_SIZE(dpaa2_eth_traps_arr); i++) {
if (dpaa2_eth_traps_arr[i].id == trap_id)
return &dpaa2_eth_trap_data->trap_items_arr[i];
}
return NULL;
}
struct dpaa2_eth_trap_item *dpaa2_eth_dl_get_trap(struct dpaa2_eth_priv *priv,
struct dpaa2_fapr *fapr)
{
static const struct dpaa2_faf_error_bit {
int position;
enum devlink_trap_generic_id trap_id;
} faf_bits[] = {
{ .position = 5, .trap_id = DEVLINK_TRAP_GENERIC_ID_VXLAN_PARSING },
{ .position = 20, .trap_id = DEVLINK_TRAP_GENERIC_ID_LLC_SNAP_PARSING },
{ .position = 24, .trap_id = DEVLINK_TRAP_GENERIC_ID_VLAN_PARSING },
{ .position = 26, .trap_id = DEVLINK_TRAP_GENERIC_ID_PPPOE_PPP_PARSING },
{ .position = 29, .trap_id = DEVLINK_TRAP_GENERIC_ID_MPLS_PARSING },
{ .position = 31, .trap_id = DEVLINK_TRAP_GENERIC_ID_ARP_PARSING },
{ .position = 52, .trap_id = DEVLINK_TRAP_GENERIC_ID_IP_1_PARSING },
{ .position = 61, .trap_id = DEVLINK_TRAP_GENERIC_ID_IP_N_PARSING },
{ .position = 67, .trap_id = DEVLINK_TRAP_GENERIC_ID_GRE_PARSING },
{ .position = 71, .trap_id = DEVLINK_TRAP_GENERIC_ID_UDP_PARSING },
{ .position = 76, .trap_id = DEVLINK_TRAP_GENERIC_ID_TCP_PARSING },
{ .position = 80, .trap_id = DEVLINK_TRAP_GENERIC_ID_IPSEC_PARSING },
{ .position = 82, .trap_id = DEVLINK_TRAP_GENERIC_ID_SCTP_PARSING },
{ .position = 84, .trap_id = DEVLINK_TRAP_GENERIC_ID_DCCP_PARSING },
{ .position = 88, .trap_id = DEVLINK_TRAP_GENERIC_ID_GTP_PARSING },
{ .position = 90, .trap_id = DEVLINK_TRAP_GENERIC_ID_ESP_PARSING },
};
u64 faf_word;
u64 mask;
int i;
for (i = 0; i < ARRAY_SIZE(faf_bits); i++) {
if (faf_bits[i].position < 32) {
/* Low part of FAF.
* position ranges from 31 to 0, mask from 0 to 31.
*/
mask = 1ull << (31 - faf_bits[i].position);
faf_word = __le32_to_cpu(fapr->faf_lo);
} else {
/* High part of FAF.
* position ranges from 95 to 32, mask from 0 to 63.
*/
mask = 1ull << (63 - (faf_bits[i].position - 32));
faf_word = __le64_to_cpu(fapr->faf_hi);
}
if (faf_word & mask)
return dpaa2_eth_dl_trap_item_lookup(priv, faf_bits[i].trap_id);
}
return NULL;
}
static int dpaa2_eth_dl_trap_init(struct devlink *devlink,
const struct devlink_trap *trap,
void *trap_ctx)
{
struct dpaa2_eth_devlink_priv *dl_priv = devlink_priv(devlink);
struct dpaa2_eth_priv *priv = dl_priv->dpaa2_priv;
struct dpaa2_eth_trap_item *dpaa2_eth_trap_item;
dpaa2_eth_trap_item = dpaa2_eth_dl_trap_item_lookup(priv, trap->id);
if (WARN_ON(!dpaa2_eth_trap_item))
return -ENOENT;
dpaa2_eth_trap_item->trap_ctx = trap_ctx;
return 0;
}
static int dpaa2_eth_dl_trap_action_set(struct devlink *devlink,
const struct devlink_trap *trap,
enum devlink_trap_action action,
struct netlink_ext_ack *extack)
{
/* No support for changing the action of an independent packet trap,
* only per trap group - parser error drops
*/
NL_SET_ERR_MSG_MOD(extack,
"Cannot change trap action independently of group");
return -EOPNOTSUPP;
}
static int dpaa2_eth_dl_trap_group_action_set(struct devlink *devlink,
const struct devlink_trap_group *group,
enum devlink_trap_action action,
struct netlink_ext_ack *extack)
{
struct dpaa2_eth_devlink_priv *dl_priv = devlink_priv(devlink);
struct dpaa2_eth_priv *priv = dl_priv->dpaa2_priv;
struct net_device *net_dev = priv->net_dev;
struct device *dev = net_dev->dev.parent;
struct dpni_error_cfg err_cfg = {0};
int err;
if (group->id != DEVLINK_TRAP_GROUP_GENERIC_ID_PARSER_ERROR_DROPS)
return -EOPNOTSUPP;
/* Configure handling of frames marked as errors from the parser */
err_cfg.errors = DPAA2_FAS_RX_ERR_MASK;
err_cfg.set_frame_annotation = 1;
switch (action) {
case DEVLINK_TRAP_ACTION_DROP:
err_cfg.error_action = DPNI_ERROR_ACTION_DISCARD;
break;
case DEVLINK_TRAP_ACTION_TRAP:
err_cfg.error_action = DPNI_ERROR_ACTION_SEND_TO_ERROR_QUEUE;
break;
default:
return -EOPNOTSUPP;
}
err = dpni_set_errors_behavior(priv->mc_io, 0, priv->mc_token, &err_cfg);
if (err) {
dev_err(dev, "dpni_set_errors_behavior failed\n");
return err;
}
return 0;
}
static const struct devlink_ops dpaa2_eth_devlink_ops = {
.info_get = dpaa2_eth_dl_info_get,
.trap_init = dpaa2_eth_dl_trap_init,
.trap_action_set = dpaa2_eth_dl_trap_action_set,
.trap_group_action_set = dpaa2_eth_dl_trap_group_action_set,
};
int dpaa2_eth_dl_alloc(struct dpaa2_eth_priv *priv)
{
struct net_device *net_dev = priv->net_dev;
struct device *dev = net_dev->dev.parent;
struct dpaa2_eth_devlink_priv *dl_priv;
priv->devlink =
devlink_alloc(&dpaa2_eth_devlink_ops, sizeof(*dl_priv), dev);
if (!priv->devlink) {
dev_err(dev, "devlink_alloc failed\n");
return -ENOMEM;
}
dl_priv = devlink_priv(priv->devlink);
dl_priv->dpaa2_priv = priv;
return 0;
}
void dpaa2_eth_dl_free(struct dpaa2_eth_priv *priv)
{
devlink_free(priv->devlink);
}
void dpaa2_eth_dl_register(struct dpaa2_eth_priv *priv)
{
devlink_register(priv->devlink);
}
void dpaa2_eth_dl_unregister(struct dpaa2_eth_priv *priv)
{
devlink_unregister(priv->devlink);
}
int dpaa2_eth_dl_port_add(struct dpaa2_eth_priv *priv)
{
struct devlink_port *devlink_port = &priv->devlink_port;
struct devlink_port_attrs attrs = {};
int err;
attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
devlink_port_attrs_set(devlink_port, &attrs);
err = devlink_port_register(priv->devlink, devlink_port, 0);
if (err)
return err;
devlink_port_type_eth_set(devlink_port, priv->net_dev);
return 0;
}
void dpaa2_eth_dl_port_del(struct dpaa2_eth_priv *priv)
{
struct devlink_port *devlink_port = &priv->devlink_port;
devlink_port_type_clear(devlink_port);
devlink_port_unregister(devlink_port);
}
int dpaa2_eth_dl_traps_register(struct dpaa2_eth_priv *priv)
{
struct dpaa2_eth_trap_data *dpaa2_eth_trap_data;
struct net_device *net_dev = priv->net_dev;
struct device *dev = net_dev->dev.parent;
int err;
dpaa2_eth_trap_data = kzalloc(sizeof(*dpaa2_eth_trap_data), GFP_KERNEL);
if (!dpaa2_eth_trap_data)
return -ENOMEM;
priv->trap_data = dpaa2_eth_trap_data;
dpaa2_eth_trap_data->trap_items_arr = kcalloc(ARRAY_SIZE(dpaa2_eth_traps_arr),
sizeof(struct dpaa2_eth_trap_item),
GFP_KERNEL);
if (!dpaa2_eth_trap_data->trap_items_arr) {
err = -ENOMEM;
goto trap_data_free;
}
err = devlink_trap_groups_register(priv->devlink, dpaa2_eth_trap_groups_arr,
ARRAY_SIZE(dpaa2_eth_trap_groups_arr));
if (err) {
dev_err(dev, "devlink_trap_groups_register() = %d\n", err);
goto trap_items_arr_free;
}
err = devlink_traps_register(priv->devlink, dpaa2_eth_traps_arr,
ARRAY_SIZE(dpaa2_eth_traps_arr), priv);
if (err) {
dev_err(dev, "devlink_traps_register() = %d\n", err);
goto trap_groups_unregiser;
}
return 0;
trap_groups_unregiser:
devlink_trap_groups_unregister(priv->devlink, dpaa2_eth_trap_groups_arr,
ARRAY_SIZE(dpaa2_eth_trap_groups_arr));
trap_items_arr_free:
kfree(dpaa2_eth_trap_data->trap_items_arr);
trap_data_free:
kfree(dpaa2_eth_trap_data);
priv->trap_data = NULL;
return err;
}
void dpaa2_eth_dl_traps_unregister(struct dpaa2_eth_priv *priv)
{
devlink_traps_unregister(priv->devlink, dpaa2_eth_traps_arr,
ARRAY_SIZE(dpaa2_eth_traps_arr));
devlink_trap_groups_unregister(priv->devlink, dpaa2_eth_trap_groups_arr,
ARRAY_SIZE(dpaa2_eth_trap_groups_arr));
kfree(priv->trap_data->trap_items_arr);
kfree(priv->trap_data);
}
|
