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
|
// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/* Microsemi Ocelot Switch driver
*
* Copyright (c) 2017, 2019 Microsemi Corporation
* Copyright 2020-2021 NXP
*/
#include <linux/if_bridge.h>
#include <linux/mrp_bridge.h>
#include <soc/mscc/ocelot_vcap.h>
#include <uapi/linux/mrp_bridge.h>
#include "ocelot.h"
#include "ocelot_vcap.h"
static const u8 mrp_test_dmac[] = { 0x01, 0x15, 0x4e, 0x00, 0x00, 0x01 };
static const u8 mrp_control_dmac[] = { 0x01, 0x15, 0x4e, 0x00, 0x00, 0x02 };
static int ocelot_mrp_find_partner_port(struct ocelot *ocelot,
struct ocelot_port *p)
{
int i;
for (i = 0; i < ocelot->num_phys_ports; ++i) {
struct ocelot_port *ocelot_port = ocelot->ports[i];
if (!ocelot_port || p == ocelot_port)
continue;
if (ocelot_port->mrp_ring_id == p->mrp_ring_id)
return i;
}
return -1;
}
static int ocelot_mrp_del_vcap(struct ocelot *ocelot, int id)
{
struct ocelot_vcap_block *block_vcap_is2;
struct ocelot_vcap_filter *filter;
block_vcap_is2 = &ocelot->block[VCAP_IS2];
filter = ocelot_vcap_block_find_filter_by_id(block_vcap_is2, id,
false);
if (!filter)
return 0;
return ocelot_vcap_filter_del(ocelot, filter);
}
static int ocelot_mrp_redirect_add_vcap(struct ocelot *ocelot, int src_port,
int dst_port)
{
const u8 mrp_test_mask[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
struct ocelot_vcap_filter *filter;
int err;
filter = kzalloc(sizeof(*filter), GFP_KERNEL);
if (!filter)
return -ENOMEM;
filter->key_type = OCELOT_VCAP_KEY_ETYPE;
filter->prio = 1;
filter->id.cookie = src_port;
filter->id.tc_offload = false;
filter->block_id = VCAP_IS2;
filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
filter->ingress_port_mask = BIT(src_port);
ether_addr_copy(filter->key.etype.dmac.value, mrp_test_dmac);
ether_addr_copy(filter->key.etype.dmac.mask, mrp_test_mask);
filter->action.mask_mode = OCELOT_MASK_MODE_REDIRECT;
filter->action.port_mask = BIT(dst_port);
err = ocelot_vcap_filter_add(ocelot, filter, NULL);
if (err)
kfree(filter);
return err;
}
static int ocelot_mrp_copy_add_vcap(struct ocelot *ocelot, int port,
int prio, unsigned long cookie)
{
const u8 mrp_mask[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 };
struct ocelot_vcap_filter *filter;
int err;
filter = kzalloc(sizeof(*filter), GFP_KERNEL);
if (!filter)
return -ENOMEM;
filter->key_type = OCELOT_VCAP_KEY_ETYPE;
filter->prio = prio;
filter->id.cookie = cookie;
filter->id.tc_offload = false;
filter->block_id = VCAP_IS2;
filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
filter->ingress_port_mask = BIT(port);
/* Here is possible to use control or test dmac because the mask
* doesn't cover the LSB
*/
ether_addr_copy(filter->key.etype.dmac.value, mrp_test_dmac);
ether_addr_copy(filter->key.etype.dmac.mask, mrp_mask);
filter->action.mask_mode = OCELOT_MASK_MODE_PERMIT_DENY;
filter->action.port_mask = 0x0;
filter->action.cpu_copy_ena = true;
filter->action.cpu_qu_num = OCELOT_MRP_CPUQ;
err = ocelot_vcap_filter_add(ocelot, filter, NULL);
if (err)
kfree(filter);
return err;
}
static void ocelot_mrp_save_mac(struct ocelot *ocelot,
struct ocelot_port *port)
{
ocelot_mact_learn(ocelot, PGID_BLACKHOLE, mrp_test_dmac,
port->pvid_vlan.vid, ENTRYTYPE_LOCKED);
ocelot_mact_learn(ocelot, PGID_BLACKHOLE, mrp_control_dmac,
port->pvid_vlan.vid, ENTRYTYPE_LOCKED);
}
static void ocelot_mrp_del_mac(struct ocelot *ocelot,
struct ocelot_port *port)
{
ocelot_mact_forget(ocelot, mrp_test_dmac, port->pvid_vlan.vid);
ocelot_mact_forget(ocelot, mrp_control_dmac, port->pvid_vlan.vid);
}
int ocelot_mrp_add(struct ocelot *ocelot, int port,
const struct switchdev_obj_mrp *mrp)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
struct ocelot_port_private *priv;
struct net_device *dev;
if (!ocelot_port)
return -EOPNOTSUPP;
priv = container_of(ocelot_port, struct ocelot_port_private, port);
dev = priv->dev;
if (mrp->p_port != dev && mrp->s_port != dev)
return 0;
ocelot_port->mrp_ring_id = mrp->ring_id;
return 0;
}
EXPORT_SYMBOL(ocelot_mrp_add);
int ocelot_mrp_del(struct ocelot *ocelot, int port,
const struct switchdev_obj_mrp *mrp)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
if (!ocelot_port)
return -EOPNOTSUPP;
if (ocelot_port->mrp_ring_id != mrp->ring_id)
return 0;
ocelot_port->mrp_ring_id = 0;
return 0;
}
EXPORT_SYMBOL(ocelot_mrp_del);
int ocelot_mrp_add_ring_role(struct ocelot *ocelot, int port,
const struct switchdev_obj_ring_role_mrp *mrp)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
int dst_port;
int err;
if (!ocelot_port)
return -EOPNOTSUPP;
if (mrp->ring_role != BR_MRP_RING_ROLE_MRC && !mrp->sw_backup)
return -EOPNOTSUPP;
if (ocelot_port->mrp_ring_id != mrp->ring_id)
return 0;
ocelot_mrp_save_mac(ocelot, ocelot_port);
if (mrp->ring_role != BR_MRP_RING_ROLE_MRC)
return ocelot_mrp_copy_add_vcap(ocelot, port, 1, port);
dst_port = ocelot_mrp_find_partner_port(ocelot, ocelot_port);
if (dst_port == -1)
return -EINVAL;
err = ocelot_mrp_redirect_add_vcap(ocelot, port, dst_port);
if (err)
return err;
err = ocelot_mrp_copy_add_vcap(ocelot, port, 2,
port + ocelot->num_phys_ports);
if (err) {
ocelot_mrp_del_vcap(ocelot, port);
return err;
}
return 0;
}
EXPORT_SYMBOL(ocelot_mrp_add_ring_role);
int ocelot_mrp_del_ring_role(struct ocelot *ocelot, int port,
const struct switchdev_obj_ring_role_mrp *mrp)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
int i;
if (!ocelot_port)
return -EOPNOTSUPP;
if (mrp->ring_role != BR_MRP_RING_ROLE_MRC && !mrp->sw_backup)
return -EOPNOTSUPP;
if (ocelot_port->mrp_ring_id != mrp->ring_id)
return 0;
ocelot_mrp_del_vcap(ocelot, port);
ocelot_mrp_del_vcap(ocelot, port + ocelot->num_phys_ports);
for (i = 0; i < ocelot->num_phys_ports; ++i) {
ocelot_port = ocelot->ports[i];
if (!ocelot_port)
continue;
if (ocelot_port->mrp_ring_id != 0)
goto out;
}
ocelot_mrp_del_mac(ocelot, ocelot->ports[port]);
out:
return 0;
}
EXPORT_SYMBOL(ocelot_mrp_del_ring_role);
|
