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8#include <linux/if_bridge.h>
9#include <linux/mrp_bridge.h>
10#include <soc/mscc/ocelot_vcap.h>
11#include <uapi/linux/mrp_bridge.h>
12#include "ocelot.h"
13#include "ocelot_vcap.h"
14
15static const u8 mrp_test_dmac[] = { 0x01, 0x15, 0x4e, 0x00, 0x00, 0x01 };
16static const u8 mrp_control_dmac[] = { 0x01, 0x15, 0x4e, 0x00, 0x00, 0x02 };
17
18static int ocelot_mrp_find_partner_port(struct ocelot *ocelot,
19 struct ocelot_port *p)
20{
21 int i;
22
23 for (i = 0; i < ocelot->num_phys_ports; ++i) {
24 struct ocelot_port *ocelot_port = ocelot->ports[i];
25
26 if (!ocelot_port || p == ocelot_port)
27 continue;
28
29 if (ocelot_port->mrp_ring_id == p->mrp_ring_id)
30 return i;
31 }
32
33 return -1;
34}
35
36static int ocelot_mrp_del_vcap(struct ocelot *ocelot, int id)
37{
38 struct ocelot_vcap_block *block_vcap_is2;
39 struct ocelot_vcap_filter *filter;
40
41 block_vcap_is2 = &ocelot->block[VCAP_IS2];
42 filter = ocelot_vcap_block_find_filter_by_id(block_vcap_is2, id,
43 false);
44 if (!filter)
45 return 0;
46
47 return ocelot_vcap_filter_del(ocelot, filter);
48}
49
50static int ocelot_mrp_redirect_add_vcap(struct ocelot *ocelot, int src_port,
51 int dst_port)
52{
53 const u8 mrp_test_mask[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
54 struct ocelot_vcap_filter *filter;
55 int err;
56
57 filter = kzalloc(sizeof(*filter), GFP_KERNEL);
58 if (!filter)
59 return -ENOMEM;
60
61 filter->key_type = OCELOT_VCAP_KEY_ETYPE;
62 filter->prio = 1;
63 filter->id.cookie = src_port;
64 filter->id.tc_offload = false;
65 filter->block_id = VCAP_IS2;
66 filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
67 filter->ingress_port_mask = BIT(src_port);
68 ether_addr_copy(filter->key.etype.dmac.value, mrp_test_dmac);
69 ether_addr_copy(filter->key.etype.dmac.mask, mrp_test_mask);
70 filter->action.mask_mode = OCELOT_MASK_MODE_REDIRECT;
71 filter->action.port_mask = BIT(dst_port);
72
73 err = ocelot_vcap_filter_add(ocelot, filter, NULL);
74 if (err)
75 kfree(filter);
76
77 return err;
78}
79
80static int ocelot_mrp_copy_add_vcap(struct ocelot *ocelot, int port,
81 int prio, unsigned long cookie)
82{
83 const u8 mrp_mask[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 };
84 struct ocelot_vcap_filter *filter;
85 int err;
86
87 filter = kzalloc(sizeof(*filter), GFP_KERNEL);
88 if (!filter)
89 return -ENOMEM;
90
91 filter->key_type = OCELOT_VCAP_KEY_ETYPE;
92 filter->prio = prio;
93 filter->id.cookie = cookie;
94 filter->id.tc_offload = false;
95 filter->block_id = VCAP_IS2;
96 filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
97 filter->ingress_port_mask = BIT(port);
98
99
100
101 ether_addr_copy(filter->key.etype.dmac.value, mrp_test_dmac);
102 ether_addr_copy(filter->key.etype.dmac.mask, mrp_mask);
103 filter->action.mask_mode = OCELOT_MASK_MODE_PERMIT_DENY;
104 filter->action.port_mask = 0x0;
105 filter->action.cpu_copy_ena = true;
106 filter->action.cpu_qu_num = OCELOT_MRP_CPUQ;
107
108 err = ocelot_vcap_filter_add(ocelot, filter, NULL);
109 if (err)
110 kfree(filter);
111
112 return err;
113}
114
115static void ocelot_mrp_save_mac(struct ocelot *ocelot,
116 struct ocelot_port *port)
117{
118 ocelot_mact_learn(ocelot, PGID_BLACKHOLE, mrp_test_dmac,
119 port->pvid_vlan.vid, ENTRYTYPE_LOCKED);
120 ocelot_mact_learn(ocelot, PGID_BLACKHOLE, mrp_control_dmac,
121 port->pvid_vlan.vid, ENTRYTYPE_LOCKED);
122}
123
124static void ocelot_mrp_del_mac(struct ocelot *ocelot,
125 struct ocelot_port *port)
126{
127 ocelot_mact_forget(ocelot, mrp_test_dmac, port->pvid_vlan.vid);
128 ocelot_mact_forget(ocelot, mrp_control_dmac, port->pvid_vlan.vid);
129}
130
131int ocelot_mrp_add(struct ocelot *ocelot, int port,
132 const struct switchdev_obj_mrp *mrp)
133{
134 struct ocelot_port *ocelot_port = ocelot->ports[port];
135 struct ocelot_port_private *priv;
136 struct net_device *dev;
137
138 if (!ocelot_port)
139 return -EOPNOTSUPP;
140
141 priv = container_of(ocelot_port, struct ocelot_port_private, port);
142 dev = priv->dev;
143
144 if (mrp->p_port != dev && mrp->s_port != dev)
145 return 0;
146
147 ocelot_port->mrp_ring_id = mrp->ring_id;
148
149 return 0;
150}
151EXPORT_SYMBOL(ocelot_mrp_add);
152
153int ocelot_mrp_del(struct ocelot *ocelot, int port,
154 const struct switchdev_obj_mrp *mrp)
155{
156 struct ocelot_port *ocelot_port = ocelot->ports[port];
157
158 if (!ocelot_port)
159 return -EOPNOTSUPP;
160
161 if (ocelot_port->mrp_ring_id != mrp->ring_id)
162 return 0;
163
164 ocelot_port->mrp_ring_id = 0;
165
166 return 0;
167}
168EXPORT_SYMBOL(ocelot_mrp_del);
169
170int ocelot_mrp_add_ring_role(struct ocelot *ocelot, int port,
171 const struct switchdev_obj_ring_role_mrp *mrp)
172{
173 struct ocelot_port *ocelot_port = ocelot->ports[port];
174 int dst_port;
175 int err;
176
177 if (!ocelot_port)
178 return -EOPNOTSUPP;
179
180 if (mrp->ring_role != BR_MRP_RING_ROLE_MRC && !mrp->sw_backup)
181 return -EOPNOTSUPP;
182
183 if (ocelot_port->mrp_ring_id != mrp->ring_id)
184 return 0;
185
186 ocelot_mrp_save_mac(ocelot, ocelot_port);
187
188 if (mrp->ring_role != BR_MRP_RING_ROLE_MRC)
189 return ocelot_mrp_copy_add_vcap(ocelot, port, 1, port);
190
191 dst_port = ocelot_mrp_find_partner_port(ocelot, ocelot_port);
192 if (dst_port == -1)
193 return -EINVAL;
194
195 err = ocelot_mrp_redirect_add_vcap(ocelot, port, dst_port);
196 if (err)
197 return err;
198
199 err = ocelot_mrp_copy_add_vcap(ocelot, port, 2,
200 port + ocelot->num_phys_ports);
201 if (err) {
202 ocelot_mrp_del_vcap(ocelot, port);
203 return err;
204 }
205
206 return 0;
207}
208EXPORT_SYMBOL(ocelot_mrp_add_ring_role);
209
210int ocelot_mrp_del_ring_role(struct ocelot *ocelot, int port,
211 const struct switchdev_obj_ring_role_mrp *mrp)
212{
213 struct ocelot_port *ocelot_port = ocelot->ports[port];
214 int i;
215
216 if (!ocelot_port)
217 return -EOPNOTSUPP;
218
219 if (mrp->ring_role != BR_MRP_RING_ROLE_MRC && !mrp->sw_backup)
220 return -EOPNOTSUPP;
221
222 if (ocelot_port->mrp_ring_id != mrp->ring_id)
223 return 0;
224
225 ocelot_mrp_del_vcap(ocelot, port);
226 ocelot_mrp_del_vcap(ocelot, port + ocelot->num_phys_ports);
227
228 for (i = 0; i < ocelot->num_phys_ports; ++i) {
229 ocelot_port = ocelot->ports[i];
230
231 if (!ocelot_port)
232 continue;
233
234 if (ocelot_port->mrp_ring_id != 0)
235 goto out;
236 }
237
238 ocelot_mrp_del_mac(ocelot, ocelot->ports[port]);
239out:
240 return 0;
241}
242EXPORT_SYMBOL(ocelot_mrp_del_ring_role);
243
