Commit | Line | Data |
---|---|---|
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 }, | |
c6676e7d | 199 | [IFLA_BRIDGE_MRP_START_TEST_MONITOR] = { .type = NLA_U32 }, |
20f6a05e HV |
200 | }; |
201 | ||
202 | static int br_mrp_start_test_parse(struct net_bridge *br, struct nlattr *attr, | |
203 | struct netlink_ext_ack *extack) | |
204 | { | |
205 | struct nlattr *tb[IFLA_BRIDGE_MRP_START_TEST_MAX + 1]; | |
206 | struct br_mrp_start_test test; | |
207 | int err; | |
208 | ||
209 | err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_START_TEST_MAX, attr, | |
210 | br_mrp_start_test_policy, extack); | |
211 | if (err) | |
212 | return err; | |
213 | ||
214 | if (!tb[IFLA_BRIDGE_MRP_START_TEST_RING_ID] || | |
215 | !tb[IFLA_BRIDGE_MRP_START_TEST_INTERVAL] || | |
216 | !tb[IFLA_BRIDGE_MRP_START_TEST_MAX_MISS] || | |
217 | !tb[IFLA_BRIDGE_MRP_START_TEST_PERIOD]) { | |
218 | NL_SET_ERR_MSG_MOD(extack, | |
219 | "Missing attribute: RING_ID or INTERVAL or MAX_MISS or PERIOD"); | |
220 | return -EINVAL; | |
221 | } | |
222 | ||
223 | memset(&test, 0x0, sizeof(test)); | |
224 | ||
225 | test.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_RING_ID]); | |
226 | test.interval = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_INTERVAL]); | |
227 | test.max_miss = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_MAX_MISS]); | |
228 | test.period = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_PERIOD]); | |
c6676e7d HV |
229 | test.monitor = false; |
230 | ||
231 | if (tb[IFLA_BRIDGE_MRP_START_TEST_MONITOR]) | |
232 | test.monitor = | |
233 | nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_MONITOR]); | |
20f6a05e HV |
234 | |
235 | return br_mrp_start_test(br, &test); | |
236 | } | |
237 | ||
4d02b8f0 HV |
238 | int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, |
239 | struct nlattr *attr, int cmd, struct netlink_ext_ack *extack) | |
240 | { | |
241 | struct nlattr *tb[IFLA_BRIDGE_MRP_MAX + 1]; | |
242 | int err; | |
243 | ||
617504c6 HV |
244 | /* When this function is called for a port then the br pointer is |
245 | * invalid, therefor set the br to point correctly | |
246 | */ | |
247 | if (p) | |
248 | br = p->br; | |
249 | ||
4d02b8f0 | 250 | if (br->stp_enabled != BR_NO_STP) { |
c75a33c8 | 251 | NL_SET_ERR_MSG_MOD(extack, "MRP can't be enabled if STP is already enabled"); |
4d02b8f0 HV |
252 | return -EINVAL; |
253 | } | |
254 | ||
255 | err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_MAX, attr, | |
256 | br_mrp_policy, extack); | |
257 | if (err) | |
258 | return err; | |
259 | ||
260 | if (tb[IFLA_BRIDGE_MRP_INSTANCE]) { | |
20f6a05e HV |
261 | err = br_mrp_instance_parse(br, tb[IFLA_BRIDGE_MRP_INSTANCE], |
262 | cmd, extack); | |
4d02b8f0 HV |
263 | if (err) |
264 | return err; | |
265 | } | |
266 | ||
267 | if (tb[IFLA_BRIDGE_MRP_PORT_STATE]) { | |
20f6a05e HV |
268 | err = br_mrp_port_state_parse(p, tb[IFLA_BRIDGE_MRP_PORT_STATE], |
269 | extack); | |
4d02b8f0 HV |
270 | if (err) |
271 | return err; | |
272 | } | |
273 | ||
274 | if (tb[IFLA_BRIDGE_MRP_PORT_ROLE]) { | |
20f6a05e HV |
275 | err = br_mrp_port_role_parse(p, tb[IFLA_BRIDGE_MRP_PORT_ROLE], |
276 | extack); | |
4d02b8f0 HV |
277 | if (err) |
278 | return err; | |
279 | } | |
280 | ||
281 | if (tb[IFLA_BRIDGE_MRP_RING_STATE]) { | |
20f6a05e HV |
282 | err = br_mrp_ring_state_parse(br, |
283 | tb[IFLA_BRIDGE_MRP_RING_STATE], | |
284 | extack); | |
4d02b8f0 HV |
285 | if (err) |
286 | return err; | |
287 | } | |
288 | ||
289 | if (tb[IFLA_BRIDGE_MRP_RING_ROLE]) { | |
20f6a05e HV |
290 | err = br_mrp_ring_role_parse(br, tb[IFLA_BRIDGE_MRP_RING_ROLE], |
291 | extack); | |
4d02b8f0 HV |
292 | if (err) |
293 | return err; | |
294 | } | |
295 | ||
296 | if (tb[IFLA_BRIDGE_MRP_START_TEST]) { | |
20f6a05e HV |
297 | err = br_mrp_start_test_parse(br, |
298 | tb[IFLA_BRIDGE_MRP_START_TEST], | |
299 | extack); | |
4d02b8f0 HV |
300 | if (err) |
301 | return err; | |
302 | } | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
df42ef22 HV |
307 | int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br) |
308 | { | |
309 | struct nlattr *tb, *mrp_tb; | |
310 | struct br_mrp *mrp; | |
311 | ||
312 | mrp_tb = nla_nest_start_noflag(skb, IFLA_BRIDGE_MRP); | |
313 | if (!mrp_tb) | |
314 | return -EMSGSIZE; | |
315 | ||
316 | list_for_each_entry_rcu(mrp, &br->mrp_list, list) { | |
317 | struct net_bridge_port *p; | |
318 | ||
319 | tb = nla_nest_start_noflag(skb, IFLA_BRIDGE_MRP_INFO); | |
320 | if (!tb) | |
321 | goto nla_info_failure; | |
322 | ||
323 | if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_RING_ID, | |
324 | mrp->ring_id)) | |
325 | goto nla_put_failure; | |
326 | ||
327 | p = rcu_dereference(mrp->p_port); | |
328 | if (p && nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_P_IFINDEX, | |
329 | p->dev->ifindex)) | |
330 | goto nla_put_failure; | |
331 | ||
332 | p = rcu_dereference(mrp->s_port); | |
333 | if (p && nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_S_IFINDEX, | |
334 | p->dev->ifindex)) | |
335 | goto nla_put_failure; | |
336 | ||
337 | if (nla_put_u16(skb, IFLA_BRIDGE_MRP_INFO_PRIO, | |
338 | mrp->prio)) | |
339 | goto nla_put_failure; | |
340 | if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_RING_STATE, | |
341 | mrp->ring_state)) | |
342 | goto nla_put_failure; | |
343 | if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_RING_ROLE, | |
344 | mrp->ring_role)) | |
345 | goto nla_put_failure; | |
346 | if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_TEST_INTERVAL, | |
347 | mrp->test_interval)) | |
348 | goto nla_put_failure; | |
349 | if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_TEST_MAX_MISS, | |
350 | mrp->test_max_miss)) | |
351 | goto nla_put_failure; | |
352 | if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_TEST_MONITOR, | |
353 | mrp->test_monitor)) | |
354 | goto nla_put_failure; | |
355 | ||
356 | nla_nest_end(skb, tb); | |
357 | } | |
358 | nla_nest_end(skb, mrp_tb); | |
359 | ||
360 | return 0; | |
361 | ||
362 | nla_put_failure: | |
363 | nla_nest_cancel(skb, tb); | |
364 | ||
365 | nla_info_failure: | |
366 | nla_nest_cancel(skb, mrp_tb); | |
367 | ||
368 | return -EMSGSIZE; | |
369 | } | |
370 | ||
9a9f26e8 HV |
371 | int br_mrp_port_open(struct net_device *dev, u8 loc) |
372 | { | |
373 | struct net_bridge_port *p; | |
374 | int err = 0; | |
375 | ||
376 | p = br_port_get_rcu(dev); | |
377 | if (!p) { | |
378 | err = -EINVAL; | |
379 | goto out; | |
380 | } | |
381 | ||
382 | if (loc) | |
383 | p->flags |= BR_MRP_LOST_CONT; | |
384 | else | |
385 | p->flags &= ~BR_MRP_LOST_CONT; | |
386 | ||
387 | br_ifinfo_notify(RTM_NEWLINK, NULL, p); | |
388 | ||
389 | out: | |
390 | return err; | |
391 | } |