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9a9f26e8 HV |
1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | ||
3 | #include <net/genetlink.h> | |
4 | ||
5 | #include <uapi/linux/mrp_bridge.h> | |
6 | #include "br_private.h" | |
7 | #include "br_private_mrp.h" | |
8 | ||
4d02b8f0 HV |
9 | static const struct nla_policy br_mrp_policy[IFLA_BRIDGE_MRP_MAX + 1] = { |
10 | [IFLA_BRIDGE_MRP_UNSPEC] = { .type = NLA_REJECT }, | |
20f6a05e HV |
11 | [IFLA_BRIDGE_MRP_INSTANCE] = { .type = NLA_NESTED }, |
12 | [IFLA_BRIDGE_MRP_PORT_STATE] = { .type = NLA_NESTED }, | |
13 | [IFLA_BRIDGE_MRP_PORT_ROLE] = { .type = NLA_NESTED }, | |
14 | [IFLA_BRIDGE_MRP_RING_STATE] = { .type = NLA_NESTED }, | |
15 | [IFLA_BRIDGE_MRP_RING_ROLE] = { .type = NLA_NESTED }, | |
16 | [IFLA_BRIDGE_MRP_START_TEST] = { .type = NLA_NESTED }, | |
4d02b8f0 HV |
17 | }; |
18 | ||
20f6a05e HV |
19 | static const struct nla_policy |
20 | br_mrp_instance_policy[IFLA_BRIDGE_MRP_INSTANCE_MAX + 1] = { | |
21 | [IFLA_BRIDGE_MRP_INSTANCE_UNSPEC] = { .type = NLA_REJECT }, | |
22 | [IFLA_BRIDGE_MRP_INSTANCE_RING_ID] = { .type = NLA_U32 }, | |
23 | [IFLA_BRIDGE_MRP_INSTANCE_P_IFINDEX] = { .type = NLA_U32 }, | |
24 | [IFLA_BRIDGE_MRP_INSTANCE_S_IFINDEX] = { .type = NLA_U32 }, | |
4b3a61b0 | 25 | [IFLA_BRIDGE_MRP_INSTANCE_PRIO] = { .type = NLA_U16 }, |
20f6a05e HV |
26 | }; |
27 | ||
28 | static int br_mrp_instance_parse(struct net_bridge *br, struct nlattr *attr, | |
29 | int cmd, struct netlink_ext_ack *extack) | |
30 | { | |
31 | struct nlattr *tb[IFLA_BRIDGE_MRP_INSTANCE_MAX + 1]; | |
32 | struct br_mrp_instance inst; | |
33 | int err; | |
34 | ||
35 | err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_INSTANCE_MAX, attr, | |
36 | br_mrp_instance_policy, extack); | |
37 | if (err) | |
38 | return err; | |
39 | ||
40 | if (!tb[IFLA_BRIDGE_MRP_INSTANCE_RING_ID] || | |
41 | !tb[IFLA_BRIDGE_MRP_INSTANCE_P_IFINDEX] || | |
42 | !tb[IFLA_BRIDGE_MRP_INSTANCE_S_IFINDEX]) { | |
43 | NL_SET_ERR_MSG_MOD(extack, | |
44 | "Missing attribute: RING_ID or P_IFINDEX or S_IFINDEX"); | |
45 | return -EINVAL; | |
46 | } | |
47 | ||
48 | memset(&inst, 0, sizeof(inst)); | |
49 | ||
50 | inst.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_INSTANCE_RING_ID]); | |
51 | inst.p_ifindex = nla_get_u32(tb[IFLA_BRIDGE_MRP_INSTANCE_P_IFINDEX]); | |
52 | inst.s_ifindex = nla_get_u32(tb[IFLA_BRIDGE_MRP_INSTANCE_S_IFINDEX]); | |
4b3a61b0 HV |
53 | inst.prio = MRP_DEFAULT_PRIO; |
54 | ||
55 | if (tb[IFLA_BRIDGE_MRP_INSTANCE_PRIO]) | |
56 | inst.prio = nla_get_u16(tb[IFLA_BRIDGE_MRP_INSTANCE_PRIO]); | |
20f6a05e HV |
57 | |
58 | if (cmd == RTM_SETLINK) | |
59 | return br_mrp_add(br, &inst); | |
60 | else | |
61 | return br_mrp_del(br, &inst); | |
62 | ||
63 | return 0; | |
64 | } | |
65 | ||
66 | static const struct nla_policy | |
67 | br_mrp_port_state_policy[IFLA_BRIDGE_MRP_PORT_STATE_MAX + 1] = { | |
68 | [IFLA_BRIDGE_MRP_PORT_STATE_UNSPEC] = { .type = NLA_REJECT }, | |
69 | [IFLA_BRIDGE_MRP_PORT_STATE_STATE] = { .type = NLA_U32 }, | |
70 | }; | |
71 | ||
72 | static int br_mrp_port_state_parse(struct net_bridge_port *p, | |
73 | struct nlattr *attr, | |
74 | struct netlink_ext_ack *extack) | |
75 | { | |
76 | struct nlattr *tb[IFLA_BRIDGE_MRP_PORT_STATE_MAX + 1]; | |
77 | enum br_mrp_port_state_type state; | |
78 | int err; | |
79 | ||
80 | err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_PORT_STATE_MAX, attr, | |
81 | br_mrp_port_state_policy, extack); | |
82 | if (err) | |
83 | return err; | |
84 | ||
85 | if (!tb[IFLA_BRIDGE_MRP_PORT_STATE_STATE]) { | |
86 | NL_SET_ERR_MSG_MOD(extack, "Missing attribute: STATE"); | |
87 | return -EINVAL; | |
88 | } | |
89 | ||
90 | state = nla_get_u32(tb[IFLA_BRIDGE_MRP_PORT_STATE_STATE]); | |
91 | ||
92 | return br_mrp_set_port_state(p, state); | |
93 | } | |
94 | ||
95 | static const struct nla_policy | |
96 | br_mrp_port_role_policy[IFLA_BRIDGE_MRP_PORT_ROLE_MAX + 1] = { | |
97 | [IFLA_BRIDGE_MRP_PORT_ROLE_UNSPEC] = { .type = NLA_REJECT }, | |
98 | [IFLA_BRIDGE_MRP_PORT_ROLE_ROLE] = { .type = NLA_U32 }, | |
99 | }; | |
100 | ||
101 | static int br_mrp_port_role_parse(struct net_bridge_port *p, | |
102 | struct nlattr *attr, | |
103 | struct netlink_ext_ack *extack) | |
104 | { | |
105 | struct nlattr *tb[IFLA_BRIDGE_MRP_PORT_ROLE_MAX + 1]; | |
106 | enum br_mrp_port_role_type role; | |
107 | int err; | |
108 | ||
109 | err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_PORT_ROLE_MAX, attr, | |
110 | br_mrp_port_role_policy, extack); | |
111 | if (err) | |
112 | return err; | |
113 | ||
114 | if (!tb[IFLA_BRIDGE_MRP_PORT_ROLE_ROLE]) { | |
115 | NL_SET_ERR_MSG_MOD(extack, "Missing attribute: ROLE"); | |
116 | return -EINVAL; | |
117 | } | |
118 | ||
119 | role = nla_get_u32(tb[IFLA_BRIDGE_MRP_PORT_ROLE_ROLE]); | |
120 | ||
121 | return br_mrp_set_port_role(p, role); | |
122 | } | |
123 | ||
124 | static const struct nla_policy | |
125 | br_mrp_ring_state_policy[IFLA_BRIDGE_MRP_RING_STATE_MAX + 1] = { | |
126 | [IFLA_BRIDGE_MRP_RING_STATE_UNSPEC] = { .type = NLA_REJECT }, | |
127 | [IFLA_BRIDGE_MRP_RING_STATE_RING_ID] = { .type = NLA_U32 }, | |
128 | [IFLA_BRIDGE_MRP_RING_STATE_STATE] = { .type = NLA_U32 }, | |
129 | }; | |
130 | ||
131 | static int br_mrp_ring_state_parse(struct net_bridge *br, struct nlattr *attr, | |
132 | struct netlink_ext_ack *extack) | |
133 | { | |
134 | struct nlattr *tb[IFLA_BRIDGE_MRP_RING_STATE_MAX + 1]; | |
135 | struct br_mrp_ring_state state; | |
136 | int err; | |
137 | ||
138 | err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_RING_STATE_MAX, attr, | |
139 | br_mrp_ring_state_policy, extack); | |
140 | if (err) | |
141 | return err; | |
142 | ||
143 | if (!tb[IFLA_BRIDGE_MRP_RING_STATE_RING_ID] || | |
144 | !tb[IFLA_BRIDGE_MRP_RING_STATE_STATE]) { | |
145 | NL_SET_ERR_MSG_MOD(extack, | |
146 | "Missing attribute: RING_ID or STATE"); | |
147 | return -EINVAL; | |
148 | } | |
149 | ||
150 | memset(&state, 0x0, sizeof(state)); | |
151 | ||
152 | state.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_STATE_RING_ID]); | |
153 | state.ring_state = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_STATE_STATE]); | |
154 | ||
155 | return br_mrp_set_ring_state(br, &state); | |
156 | } | |
157 | ||
158 | static const struct nla_policy | |
159 | br_mrp_ring_role_policy[IFLA_BRIDGE_MRP_RING_ROLE_MAX + 1] = { | |
160 | [IFLA_BRIDGE_MRP_RING_ROLE_UNSPEC] = { .type = NLA_REJECT }, | |
161 | [IFLA_BRIDGE_MRP_RING_ROLE_RING_ID] = { .type = NLA_U32 }, | |
162 | [IFLA_BRIDGE_MRP_RING_ROLE_ROLE] = { .type = NLA_U32 }, | |
163 | }; | |
164 | ||
165 | static int br_mrp_ring_role_parse(struct net_bridge *br, struct nlattr *attr, | |
166 | struct netlink_ext_ack *extack) | |
167 | { | |
168 | struct nlattr *tb[IFLA_BRIDGE_MRP_RING_ROLE_MAX + 1]; | |
169 | struct br_mrp_ring_role role; | |
170 | int err; | |
171 | ||
172 | err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_RING_ROLE_MAX, attr, | |
173 | br_mrp_ring_role_policy, extack); | |
174 | if (err) | |
175 | return err; | |
176 | ||
177 | if (!tb[IFLA_BRIDGE_MRP_RING_ROLE_RING_ID] || | |
178 | !tb[IFLA_BRIDGE_MRP_RING_ROLE_ROLE]) { | |
179 | NL_SET_ERR_MSG_MOD(extack, | |
180 | "Missing attribute: RING_ID or ROLE"); | |
181 | return -EINVAL; | |
182 | } | |
183 | ||
184 | memset(&role, 0x0, sizeof(role)); | |
185 | ||
186 | role.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_ROLE_RING_ID]); | |
187 | role.ring_role = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_ROLE_ROLE]); | |
188 | ||
189 | return br_mrp_set_ring_role(br, &role); | |
190 | } | |
191 | ||
192 | static const struct nla_policy | |
193 | br_mrp_start_test_policy[IFLA_BRIDGE_MRP_START_TEST_MAX + 1] = { | |
194 | [IFLA_BRIDGE_MRP_START_TEST_UNSPEC] = { .type = NLA_REJECT }, | |
195 | [IFLA_BRIDGE_MRP_START_TEST_RING_ID] = { .type = NLA_U32 }, | |
196 | [IFLA_BRIDGE_MRP_START_TEST_INTERVAL] = { .type = NLA_U32 }, | |
197 | [IFLA_BRIDGE_MRP_START_TEST_MAX_MISS] = { .type = NLA_U32 }, | |
198 | [IFLA_BRIDGE_MRP_START_TEST_PERIOD] = { .type = NLA_U32 }, | |
199 | }; | |
200 | ||
201 | static int br_mrp_start_test_parse(struct net_bridge *br, struct nlattr *attr, | |
202 | struct netlink_ext_ack *extack) | |
203 | { | |
204 | struct nlattr *tb[IFLA_BRIDGE_MRP_START_TEST_MAX + 1]; | |
205 | struct br_mrp_start_test test; | |
206 | int err; | |
207 | ||
208 | err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_START_TEST_MAX, attr, | |
209 | br_mrp_start_test_policy, extack); | |
210 | if (err) | |
211 | return err; | |
212 | ||
213 | if (!tb[IFLA_BRIDGE_MRP_START_TEST_RING_ID] || | |
214 | !tb[IFLA_BRIDGE_MRP_START_TEST_INTERVAL] || | |
215 | !tb[IFLA_BRIDGE_MRP_START_TEST_MAX_MISS] || | |
216 | !tb[IFLA_BRIDGE_MRP_START_TEST_PERIOD]) { | |
217 | NL_SET_ERR_MSG_MOD(extack, | |
218 | "Missing attribute: RING_ID or INTERVAL or MAX_MISS or PERIOD"); | |
219 | return -EINVAL; | |
220 | } | |
221 | ||
222 | memset(&test, 0x0, sizeof(test)); | |
223 | ||
224 | test.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_RING_ID]); | |
225 | test.interval = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_INTERVAL]); | |
226 | test.max_miss = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_MAX_MISS]); | |
227 | test.period = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_PERIOD]); | |
228 | ||
229 | return br_mrp_start_test(br, &test); | |
230 | } | |
231 | ||
4d02b8f0 HV |
232 | int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, |
233 | struct nlattr *attr, int cmd, struct netlink_ext_ack *extack) | |
234 | { | |
235 | struct nlattr *tb[IFLA_BRIDGE_MRP_MAX + 1]; | |
236 | int err; | |
237 | ||
617504c6 HV |
238 | /* When this function is called for a port then the br pointer is |
239 | * invalid, therefor set the br to point correctly | |
240 | */ | |
241 | if (p) | |
242 | br = p->br; | |
243 | ||
4d02b8f0 | 244 | if (br->stp_enabled != BR_NO_STP) { |
c75a33c8 | 245 | NL_SET_ERR_MSG_MOD(extack, "MRP can't be enabled if STP is already enabled"); |
4d02b8f0 HV |
246 | return -EINVAL; |
247 | } | |
248 | ||
249 | err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_MAX, attr, | |
250 | br_mrp_policy, extack); | |
251 | if (err) | |
252 | return err; | |
253 | ||
254 | if (tb[IFLA_BRIDGE_MRP_INSTANCE]) { | |
20f6a05e HV |
255 | err = br_mrp_instance_parse(br, tb[IFLA_BRIDGE_MRP_INSTANCE], |
256 | cmd, extack); | |
4d02b8f0 HV |
257 | if (err) |
258 | return err; | |
259 | } | |
260 | ||
261 | if (tb[IFLA_BRIDGE_MRP_PORT_STATE]) { | |
20f6a05e HV |
262 | err = br_mrp_port_state_parse(p, tb[IFLA_BRIDGE_MRP_PORT_STATE], |
263 | extack); | |
4d02b8f0 HV |
264 | if (err) |
265 | return err; | |
266 | } | |
267 | ||
268 | if (tb[IFLA_BRIDGE_MRP_PORT_ROLE]) { | |
20f6a05e HV |
269 | err = br_mrp_port_role_parse(p, tb[IFLA_BRIDGE_MRP_PORT_ROLE], |
270 | extack); | |
4d02b8f0 HV |
271 | if (err) |
272 | return err; | |
273 | } | |
274 | ||
275 | if (tb[IFLA_BRIDGE_MRP_RING_STATE]) { | |
20f6a05e HV |
276 | err = br_mrp_ring_state_parse(br, |
277 | tb[IFLA_BRIDGE_MRP_RING_STATE], | |
278 | extack); | |
4d02b8f0 HV |
279 | if (err) |
280 | return err; | |
281 | } | |
282 | ||
283 | if (tb[IFLA_BRIDGE_MRP_RING_ROLE]) { | |
20f6a05e HV |
284 | err = br_mrp_ring_role_parse(br, tb[IFLA_BRIDGE_MRP_RING_ROLE], |
285 | extack); | |
4d02b8f0 HV |
286 | if (err) |
287 | return err; | |
288 | } | |
289 | ||
290 | if (tb[IFLA_BRIDGE_MRP_START_TEST]) { | |
20f6a05e HV |
291 | err = br_mrp_start_test_parse(br, |
292 | tb[IFLA_BRIDGE_MRP_START_TEST], | |
293 | extack); | |
4d02b8f0 HV |
294 | if (err) |
295 | return err; | |
296 | } | |
297 | ||
298 | return 0; | |
299 | } | |
300 | ||
9a9f26e8 HV |
301 | int br_mrp_port_open(struct net_device *dev, u8 loc) |
302 | { | |
303 | struct net_bridge_port *p; | |
304 | int err = 0; | |
305 | ||
306 | p = br_port_get_rcu(dev); | |
307 | if (!p) { | |
308 | err = -EINVAL; | |
309 | goto out; | |
310 | } | |
311 | ||
312 | if (loc) | |
313 | p->flags |= BR_MRP_LOST_CONT; | |
314 | else | |
315 | p->flags &= ~BR_MRP_LOST_CONT; | |
316 | ||
317 | br_ifinfo_notify(RTM_NEWLINK, NULL, p); | |
318 | ||
319 | out: | |
320 | return err; | |
321 | } |