Commit | Line | Data |
---|---|---|
457c8996 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
243a2e63 VY |
2 | #include <linux/kernel.h> |
3 | #include <linux/netdevice.h> | |
4 | #include <linux/rtnetlink.h> | |
5 | #include <linux/slab.h> | |
7f109539 | 6 | #include <net/switchdev.h> |
243a2e63 VY |
7 | |
8 | #include "br_private.h" | |
efa5356b | 9 | #include "br_private_tunnel.h" |
243a2e63 | 10 | |
80900acd MM |
11 | static void nbp_vlan_set_vlan_dev_state(struct net_bridge_port *p, u16 vid); |
12 | ||
2594e906 NA |
13 | static inline int br_vlan_cmp(struct rhashtable_compare_arg *arg, |
14 | const void *ptr) | |
552406c4 | 15 | { |
2594e906 NA |
16 | const struct net_bridge_vlan *vle = ptr; |
17 | u16 vid = *(u16 *)arg->key; | |
18 | ||
19 | return vle->vid != vid; | |
20 | } | |
21 | ||
22 | static const struct rhashtable_params br_vlan_rht_params = { | |
23 | .head_offset = offsetof(struct net_bridge_vlan, vnode), | |
24 | .key_offset = offsetof(struct net_bridge_vlan, vid), | |
25 | .key_len = sizeof(u16), | |
8af78b64 | 26 | .nelem_hint = 3, |
2594e906 NA |
27 | .max_size = VLAN_N_VID, |
28 | .obj_cmpfn = br_vlan_cmp, | |
29 | .automatic_shrinking = true, | |
30 | }; | |
31 | ||
32 | static struct net_bridge_vlan *br_vlan_lookup(struct rhashtable *tbl, u16 vid) | |
33 | { | |
34 | return rhashtable_lookup_fast(tbl, &vid, br_vlan_rht_params); | |
35 | } | |
36 | ||
a580c76d NA |
37 | static bool __vlan_add_pvid(struct net_bridge_vlan_group *vg, |
38 | const struct net_bridge_vlan *v) | |
2594e906 | 39 | { |
a580c76d | 40 | if (vg->pvid == v->vid) |
f418af63 | 41 | return false; |
552406c4 VY |
42 | |
43 | smp_wmb(); | |
a580c76d NA |
44 | br_vlan_set_pvid_state(vg, v->state); |
45 | vg->pvid = v->vid; | |
f418af63 NA |
46 | |
47 | return true; | |
552406c4 VY |
48 | } |
49 | ||
f418af63 | 50 | static bool __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid) |
552406c4 | 51 | { |
77751ee8 | 52 | if (vg->pvid != vid) |
f418af63 | 53 | return false; |
552406c4 VY |
54 | |
55 | smp_wmb(); | |
77751ee8 | 56 | vg->pvid = 0; |
f418af63 NA |
57 | |
58 | return true; | |
552406c4 VY |
59 | } |
60 | ||
f418af63 NA |
61 | /* return true if anything changed, false otherwise */ |
62 | static bool __vlan_add_flags(struct net_bridge_vlan *v, u16 flags) | |
35e03f3a | 63 | { |
77751ee8 | 64 | struct net_bridge_vlan_group *vg; |
f418af63 NA |
65 | u16 old_flags = v->flags; |
66 | bool ret; | |
77751ee8 NA |
67 | |
68 | if (br_vlan_is_master(v)) | |
907b1e6e | 69 | vg = br_vlan_group(v->br); |
77751ee8 | 70 | else |
907b1e6e | 71 | vg = nbp_vlan_group(v->port); |
77751ee8 NA |
72 | |
73 | if (flags & BRIDGE_VLAN_INFO_PVID) | |
a580c76d | 74 | ret = __vlan_add_pvid(vg, v); |
77751ee8 | 75 | else |
f418af63 | 76 | ret = __vlan_delete_pvid(vg, v->vid); |
35e03f3a VY |
77 | |
78 | if (flags & BRIDGE_VLAN_INFO_UNTAGGED) | |
2594e906 | 79 | v->flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
635126b7 | 80 | else |
2594e906 | 81 | v->flags &= ~BRIDGE_VLAN_INFO_UNTAGGED; |
f418af63 NA |
82 | |
83 | return ret || !!(old_flags ^ v->flags); | |
35e03f3a VY |
84 | } |
85 | ||
7f109539 | 86 | static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br, |
27973793 IS |
87 | struct net_bridge_vlan *v, u16 flags, |
88 | struct netlink_ext_ack *extack) | |
7f109539 | 89 | { |
7f109539 SF |
90 | int err; |
91 | ||
0944d6b5 JP |
92 | /* Try switchdev op first. In case it is not supported, fallback to |
93 | * 8021q add. | |
7f109539 | 94 | */ |
27973793 | 95 | err = br_switchdev_port_vlan_add(dev, v->vid, flags, extack); |
0944d6b5 | 96 | if (err == -EOPNOTSUPP) |
27973793 IS |
97 | return vlan_vid_add(dev, br->vlan_proto, v->vid); |
98 | v->priv_flags |= BR_VLFLAG_ADDED_BY_SWITCHDEV; | |
7f109539 SF |
99 | return err; |
100 | } | |
101 | ||
2594e906 | 102 | static void __vlan_add_list(struct net_bridge_vlan *v) |
243a2e63 | 103 | { |
907b1e6e | 104 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
105 | struct list_head *headp, *hpos; |
106 | struct net_bridge_vlan *vent; | |
bc9a25d2 | 107 | |
907b1e6e NA |
108 | if (br_vlan_is_master(v)) |
109 | vg = br_vlan_group(v->br); | |
110 | else | |
111 | vg = nbp_vlan_group(v->port); | |
112 | ||
113 | headp = &vg->vlan_list; | |
2594e906 NA |
114 | list_for_each_prev(hpos, headp) { |
115 | vent = list_entry(hpos, struct net_bridge_vlan, vlist); | |
116 | if (v->vid < vent->vid) | |
117 | continue; | |
118 | else | |
119 | break; | |
243a2e63 | 120 | } |
586c2b57 | 121 | list_add_rcu(&v->vlist, hpos); |
2594e906 | 122 | } |
243a2e63 | 123 | |
2594e906 NA |
124 | static void __vlan_del_list(struct net_bridge_vlan *v) |
125 | { | |
586c2b57 | 126 | list_del_rcu(&v->vlist); |
243a2e63 VY |
127 | } |
128 | ||
bf361ad3 | 129 | static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br, |
27973793 | 130 | const struct net_bridge_vlan *v) |
7f109539 | 131 | { |
0944d6b5 | 132 | int err; |
7f109539 | 133 | |
0944d6b5 JP |
134 | /* Try switchdev op first. In case it is not supported, fallback to |
135 | * 8021q del. | |
7f109539 | 136 | */ |
27973793 IS |
137 | err = br_switchdev_port_vlan_del(dev, v->vid); |
138 | if (!(v->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV)) | |
139 | vlan_vid_del(dev, br->vlan_proto, v->vid); | |
140 | return err == -EOPNOTSUPP ? 0 : err; | |
7f109539 SF |
141 | } |
142 | ||
4bbd026c | 143 | /* Returns a master vlan, if it didn't exist it gets created. In all cases |
f8ed289f NA |
144 | * a reference is taken to the master vlan before returning. |
145 | */ | |
169327d5 PM |
146 | static struct net_bridge_vlan * |
147 | br_vlan_get_master(struct net_bridge *br, u16 vid, | |
148 | struct netlink_ext_ack *extack) | |
f8ed289f | 149 | { |
907b1e6e | 150 | struct net_bridge_vlan_group *vg; |
f8ed289f NA |
151 | struct net_bridge_vlan *masterv; |
152 | ||
907b1e6e NA |
153 | vg = br_vlan_group(br); |
154 | masterv = br_vlan_find(vg, vid); | |
f8ed289f | 155 | if (!masterv) { |
f418af63 NA |
156 | bool changed; |
157 | ||
f8ed289f | 158 | /* missing global ctx, create it now */ |
169327d5 | 159 | if (br_vlan_add(br, vid, 0, &changed, extack)) |
f8ed289f | 160 | return NULL; |
907b1e6e | 161 | masterv = br_vlan_find(vg, vid); |
f8ed289f NA |
162 | if (WARN_ON(!masterv)) |
163 | return NULL; | |
0e5a82ef IS |
164 | refcount_set(&masterv->refcnt, 1); |
165 | return masterv; | |
f8ed289f | 166 | } |
25127759 | 167 | refcount_inc(&masterv->refcnt); |
f8ed289f NA |
168 | |
169 | return masterv; | |
170 | } | |
171 | ||
6dada9b1 NA |
172 | static void br_master_vlan_rcu_free(struct rcu_head *rcu) |
173 | { | |
174 | struct net_bridge_vlan *v; | |
175 | ||
176 | v = container_of(rcu, struct net_bridge_vlan, rcu); | |
177 | WARN_ON(!br_vlan_is_master(v)); | |
178 | free_percpu(v->stats); | |
179 | v->stats = NULL; | |
180 | kfree(v); | |
181 | } | |
182 | ||
f8ed289f NA |
183 | static void br_vlan_put_master(struct net_bridge_vlan *masterv) |
184 | { | |
907b1e6e NA |
185 | struct net_bridge_vlan_group *vg; |
186 | ||
f8ed289f NA |
187 | if (!br_vlan_is_master(masterv)) |
188 | return; | |
189 | ||
907b1e6e | 190 | vg = br_vlan_group(masterv->br); |
25127759 | 191 | if (refcount_dec_and_test(&masterv->refcnt)) { |
907b1e6e | 192 | rhashtable_remove_fast(&vg->vlan_hash, |
f8ed289f NA |
193 | &masterv->vnode, br_vlan_rht_params); |
194 | __vlan_del_list(masterv); | |
6dada9b1 | 195 | call_rcu(&masterv->rcu, br_master_vlan_rcu_free); |
f8ed289f NA |
196 | } |
197 | } | |
198 | ||
9163a0fc NA |
199 | static void nbp_vlan_rcu_free(struct rcu_head *rcu) |
200 | { | |
201 | struct net_bridge_vlan *v; | |
202 | ||
203 | v = container_of(rcu, struct net_bridge_vlan, rcu); | |
204 | WARN_ON(br_vlan_is_master(v)); | |
205 | /* if we had per-port stats configured then free them here */ | |
9d332e69 | 206 | if (v->priv_flags & BR_VLFLAG_PER_PORT_STATS) |
9163a0fc NA |
207 | free_percpu(v->stats); |
208 | v->stats = NULL; | |
209 | kfree(v); | |
210 | } | |
211 | ||
2594e906 NA |
212 | /* This is the shared VLAN add function which works for both ports and bridge |
213 | * devices. There are four possible calls to this function in terms of the | |
214 | * vlan entry type: | |
215 | * 1. vlan is being added on a port (no master flags, global entry exists) | |
ddd611d3 | 216 | * 2. vlan is being added on a bridge (both master and brentry flags) |
2594e906 | 217 | * 3. vlan is being added on a port, but a global entry didn't exist which |
ddd611d3 | 218 | * is being created right now (master flag set, brentry flag unset), the |
2594e906 | 219 | * global entry is used for global per-vlan features, but not for filtering |
ddd611d3 | 220 | * 4. same as 3 but with both master and brentry flags set so the entry |
2594e906 NA |
221 | * will be used for filtering in both the port and the bridge |
222 | */ | |
169327d5 PM |
223 | static int __vlan_add(struct net_bridge_vlan *v, u16 flags, |
224 | struct netlink_ext_ack *extack) | |
243a2e63 | 225 | { |
2594e906 NA |
226 | struct net_bridge_vlan *masterv = NULL; |
227 | struct net_bridge_port *p = NULL; | |
6be144f6 | 228 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
229 | struct net_device *dev; |
230 | struct net_bridge *br; | |
231 | int err; | |
232 | ||
233 | if (br_vlan_is_master(v)) { | |
234 | br = v->br; | |
235 | dev = br->dev; | |
907b1e6e | 236 | vg = br_vlan_group(br); |
2594e906 NA |
237 | } else { |
238 | p = v->port; | |
239 | br = p->br; | |
240 | dev = p->dev; | |
907b1e6e | 241 | vg = nbp_vlan_group(p); |
2594e906 NA |
242 | } |
243 | ||
244 | if (p) { | |
2594e906 NA |
245 | /* Add VLAN to the device filter if it is supported. |
246 | * This ensures tagged traffic enters the bridge when | |
247 | * promiscuous mode is disabled by br_manage_promisc(). | |
248 | */ | |
27973793 | 249 | err = __vlan_vid_add(dev, br, v, flags, extack); |
2594e906 NA |
250 | if (err) |
251 | goto out; | |
252 | ||
253 | /* need to work on the master vlan too */ | |
254 | if (flags & BRIDGE_VLAN_INFO_MASTER) { | |
f418af63 NA |
255 | bool changed; |
256 | ||
257 | err = br_vlan_add(br, v->vid, | |
258 | flags | BRIDGE_VLAN_INFO_BRENTRY, | |
169327d5 | 259 | &changed, extack); |
2594e906 NA |
260 | if (err) |
261 | goto out_filt; | |
f545923b NA |
262 | |
263 | if (changed) | |
264 | br_vlan_notify(br, NULL, v->vid, 0, | |
265 | RTM_NEWVLAN); | |
2594e906 NA |
266 | } |
267 | ||
169327d5 | 268 | masterv = br_vlan_get_master(br, v->vid, extack); |
ee4f52a8 ZC |
269 | if (!masterv) { |
270 | err = -ENOMEM; | |
f8ed289f | 271 | goto out_filt; |
ee4f52a8 | 272 | } |
2594e906 | 273 | v->brvlan = masterv; |
9163a0fc | 274 | if (br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)) { |
281cc284 HK |
275 | v->stats = |
276 | netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); | |
9163a0fc NA |
277 | if (!v->stats) { |
278 | err = -ENOMEM; | |
279 | goto out_filt; | |
280 | } | |
9d332e69 | 281 | v->priv_flags |= BR_VLFLAG_PER_PORT_STATS; |
9163a0fc NA |
282 | } else { |
283 | v->stats = masterv->stats; | |
284 | } | |
9c86ce2c | 285 | } else { |
169327d5 | 286 | err = br_switchdev_port_vlan_add(dev, v->vid, flags, extack); |
9c86ce2c PM |
287 | if (err && err != -EOPNOTSUPP) |
288 | goto out; | |
2594e906 NA |
289 | } |
290 | ||
6be144f6 | 291 | /* Add the dev mac and count the vlan only if it's usable */ |
2594e906 NA |
292 | if (br_vlan_should_use(v)) { |
293 | err = br_fdb_insert(br, p, dev->dev_addr, v->vid); | |
294 | if (err) { | |
295 | br_err(br, "failed insert local address into bridge forwarding table\n"); | |
296 | goto out_filt; | |
297 | } | |
6be144f6 | 298 | vg->num_vlans++; |
2594e906 NA |
299 | } |
300 | ||
a580c76d NA |
301 | /* set the state before publishing */ |
302 | v->state = BR_STATE_FORWARDING; | |
303 | ||
6be144f6 NA |
304 | err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode, |
305 | br_vlan_rht_params); | |
2594e906 NA |
306 | if (err) |
307 | goto out_fdb_insert; | |
243a2e63 | 308 | |
2594e906 NA |
309 | __vlan_add_list(v); |
310 | __vlan_add_flags(v, flags); | |
80900acd MM |
311 | |
312 | if (p) | |
313 | nbp_vlan_set_vlan_dev_state(p, v->vid); | |
2594e906 NA |
314 | out: |
315 | return err; | |
316 | ||
317 | out_fdb_insert: | |
6be144f6 NA |
318 | if (br_vlan_should_use(v)) { |
319 | br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid); | |
320 | vg->num_vlans--; | |
321 | } | |
2594e906 NA |
322 | |
323 | out_filt: | |
324 | if (p) { | |
27973793 | 325 | __vlan_vid_del(dev, br, v); |
2594e906 | 326 | if (masterv) { |
1a3aea25 LR |
327 | if (v->stats && masterv->stats != v->stats) |
328 | free_percpu(v->stats); | |
329 | v->stats = NULL; | |
330 | ||
f8ed289f | 331 | br_vlan_put_master(masterv); |
2594e906 NA |
332 | v->brvlan = NULL; |
333 | } | |
9c86ce2c PM |
334 | } else { |
335 | br_switchdev_port_vlan_del(dev, v->vid); | |
2594e906 NA |
336 | } |
337 | ||
338 | goto out; | |
339 | } | |
340 | ||
341 | static int __vlan_del(struct net_bridge_vlan *v) | |
342 | { | |
343 | struct net_bridge_vlan *masterv = v; | |
77751ee8 | 344 | struct net_bridge_vlan_group *vg; |
2594e906 | 345 | struct net_bridge_port *p = NULL; |
2594e906 | 346 | int err = 0; |
552406c4 | 347 | |
2594e906 | 348 | if (br_vlan_is_master(v)) { |
907b1e6e | 349 | vg = br_vlan_group(v->br); |
2594e906 NA |
350 | } else { |
351 | p = v->port; | |
907b1e6e | 352 | vg = nbp_vlan_group(v->port); |
2594e906 | 353 | masterv = v->brvlan; |
2594e906 | 354 | } |
bf361ad3 | 355 | |
77751ee8 | 356 | __vlan_delete_pvid(vg, v->vid); |
2594e906 | 357 | if (p) { |
27973793 | 358 | err = __vlan_vid_del(p->dev, p->br, v); |
bf361ad3 | 359 | if (err) |
2594e906 | 360 | goto out; |
9c86ce2c PM |
361 | } else { |
362 | err = br_switchdev_port_vlan_del(v->br->dev, v->vid); | |
363 | if (err && err != -EOPNOTSUPP) | |
364 | goto out; | |
365 | err = 0; | |
8580e211 | 366 | } |
243a2e63 | 367 | |
6be144f6 NA |
368 | if (br_vlan_should_use(v)) { |
369 | v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY; | |
370 | vg->num_vlans--; | |
2594e906 NA |
371 | } |
372 | ||
373 | if (masterv != v) { | |
efa5356b | 374 | vlan_tunnel_info_del(vg, v); |
77751ee8 NA |
375 | rhashtable_remove_fast(&vg->vlan_hash, &v->vnode, |
376 | br_vlan_rht_params); | |
2594e906 | 377 | __vlan_del_list(v); |
80900acd | 378 | nbp_vlan_set_vlan_dev_state(p, v->vid); |
9163a0fc | 379 | call_rcu(&v->rcu, nbp_vlan_rcu_free); |
243a2e63 | 380 | } |
2594e906 | 381 | |
f8ed289f | 382 | br_vlan_put_master(masterv); |
2594e906 NA |
383 | out: |
384 | return err; | |
243a2e63 VY |
385 | } |
386 | ||
f409d0ed NA |
387 | static void __vlan_group_free(struct net_bridge_vlan_group *vg) |
388 | { | |
389 | WARN_ON(!list_empty(&vg->vlan_list)); | |
390 | rhashtable_destroy(&vg->vlan_hash); | |
efa5356b | 391 | vlan_tunnel_deinit(vg); |
f409d0ed NA |
392 | kfree(vg); |
393 | } | |
394 | ||
f545923b NA |
395 | static void __vlan_flush(const struct net_bridge *br, |
396 | const struct net_bridge_port *p, | |
397 | struct net_bridge_vlan_group *vg) | |
243a2e63 | 398 | { |
2594e906 | 399 | struct net_bridge_vlan *vlan, *tmp; |
f545923b | 400 | u16 v_start = 0, v_end = 0; |
2594e906 | 401 | |
f409d0ed | 402 | __vlan_delete_pvid(vg, vg->pvid); |
f545923b NA |
403 | list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist) { |
404 | /* take care of disjoint ranges */ | |
405 | if (!v_start) { | |
406 | v_start = vlan->vid; | |
407 | } else if (vlan->vid - v_end != 1) { | |
408 | /* found range end, notify and start next one */ | |
409 | br_vlan_notify(br, p, v_start, v_end, RTM_DELVLAN); | |
410 | v_start = vlan->vid; | |
411 | } | |
412 | v_end = vlan->vid; | |
413 | ||
2594e906 | 414 | __vlan_del(vlan); |
f545923b NA |
415 | } |
416 | ||
417 | /* notify about the last/whole vlan range */ | |
418 | if (v_start) | |
419 | br_vlan_notify(br, p, v_start, v_end, RTM_DELVLAN); | |
243a2e63 VY |
420 | } |
421 | ||
78851988 | 422 | struct sk_buff *br_handle_vlan(struct net_bridge *br, |
11538d03 | 423 | const struct net_bridge_port *p, |
2594e906 | 424 | struct net_bridge_vlan_group *vg, |
78851988 | 425 | struct sk_buff *skb) |
a37b85c9 | 426 | { |
281cc284 | 427 | struct pcpu_sw_netstats *stats; |
2594e906 | 428 | struct net_bridge_vlan *v; |
a37b85c9 VY |
429 | u16 vid; |
430 | ||
20adfa1a VY |
431 | /* If this packet was not filtered at input, let it pass */ |
432 | if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) | |
78851988 VY |
433 | goto out; |
434 | ||
2594e906 NA |
435 | /* At this point, we know that the frame was filtered and contains |
436 | * a valid vlan id. If the vlan id has untagged flag set, | |
437 | * send untagged; otherwise, send tagged. | |
438 | */ | |
439 | br_vlan_get_tag(skb, &vid); | |
440 | v = br_vlan_find(vg, vid); | |
441 | /* Vlan entry must be configured at this point. The | |
fc92f745 VY |
442 | * only exception is the bridge is set in promisc mode and the |
443 | * packet is destined for the bridge device. In this case | |
444 | * pass the packet as is. | |
445 | */ | |
2594e906 | 446 | if (!v || !br_vlan_should_use(v)) { |
fc92f745 VY |
447 | if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) { |
448 | goto out; | |
449 | } else { | |
450 | kfree_skb(skb); | |
451 | return NULL; | |
452 | } | |
453 | } | |
ae75767e | 454 | if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { |
6dada9b1 NA |
455 | stats = this_cpu_ptr(v->stats); |
456 | u64_stats_update_begin(&stats->syncp); | |
457 | stats->tx_bytes += skb->len; | |
458 | stats->tx_packets++; | |
459 | u64_stats_update_end(&stats->syncp); | |
460 | } | |
461 | ||
2594e906 | 462 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
5978f8a9 | 463 | __vlan_hwaccel_clear_tag(skb); |
11538d03 RP |
464 | |
465 | if (p && (p->flags & BR_VLAN_TUNNEL) && | |
466 | br_handle_egress_vlan_tunnel(skb, v)) { | |
467 | kfree_skb(skb); | |
468 | return NULL; | |
469 | } | |
78851988 VY |
470 | out: |
471 | return skb; | |
472 | } | |
473 | ||
474 | /* Called under RCU */ | |
6dada9b1 NA |
475 | static bool __allowed_ingress(const struct net_bridge *br, |
476 | struct net_bridge_vlan_group *vg, | |
a580c76d NA |
477 | struct sk_buff *skb, u16 *vid, |
478 | u8 *state) | |
78851988 | 479 | { |
281cc284 | 480 | struct pcpu_sw_netstats *stats; |
6dada9b1 | 481 | struct net_bridge_vlan *v; |
8580e211 | 482 | bool tagged; |
a37b85c9 | 483 | |
20adfa1a | 484 | BR_INPUT_SKB_CB(skb)->vlan_filtered = true; |
12464bb8 TM |
485 | /* If vlan tx offload is disabled on bridge device and frame was |
486 | * sent from vlan device on the bridge device, it does not have | |
487 | * HW accelerated vlan tag. | |
488 | */ | |
df8a39de | 489 | if (unlikely(!skb_vlan_tag_present(skb) && |
6dada9b1 | 490 | skb->protocol == br->vlan_proto)) { |
0d5501c1 | 491 | skb = skb_vlan_untag(skb); |
12464bb8 TM |
492 | if (unlikely(!skb)) |
493 | return false; | |
494 | } | |
495 | ||
8580e211 TM |
496 | if (!br_vlan_get_tag(skb, vid)) { |
497 | /* Tagged frame */ | |
6dada9b1 | 498 | if (skb->vlan_proto != br->vlan_proto) { |
8580e211 TM |
499 | /* Protocol-mismatch, empty out vlan_tci for new tag */ |
500 | skb_push(skb, ETH_HLEN); | |
62749e2c | 501 | skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto, |
df8a39de | 502 | skb_vlan_tag_get(skb)); |
8580e211 TM |
503 | if (unlikely(!skb)) |
504 | return false; | |
505 | ||
506 | skb_pull(skb, ETH_HLEN); | |
507 | skb_reset_mac_len(skb); | |
508 | *vid = 0; | |
509 | tagged = false; | |
510 | } else { | |
511 | tagged = true; | |
512 | } | |
513 | } else { | |
514 | /* Untagged frame */ | |
515 | tagged = false; | |
516 | } | |
517 | ||
b90356ce | 518 | if (!*vid) { |
77751ee8 NA |
519 | u16 pvid = br_get_pvid(vg); |
520 | ||
b90356ce TM |
521 | /* Frame had a tag with VID 0 or did not have a tag. |
522 | * See if pvid is set on this port. That tells us which | |
523 | * vlan untagged or priority-tagged traffic belongs to. | |
78851988 | 524 | */ |
3df6bf45 | 525 | if (!pvid) |
eb707618 | 526 | goto drop; |
78851988 | 527 | |
b90356ce TM |
528 | /* PVID is set on this port. Any untagged or priority-tagged |
529 | * ingress frame is considered to belong to this vlan. | |
78851988 | 530 | */ |
dfb5fa32 | 531 | *vid = pvid; |
8580e211 | 532 | if (likely(!tagged)) |
b90356ce | 533 | /* Untagged Frame. */ |
6dada9b1 | 534 | __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid); |
b90356ce TM |
535 | else |
536 | /* Priority-tagged Frame. | |
5978f8a9 MM |
537 | * At this point, we know that skb->vlan_tci VID |
538 | * field was 0. | |
b90356ce TM |
539 | * We update only VID field and preserve PCP field. |
540 | */ | |
541 | skb->vlan_tci |= pvid; | |
542 | ||
6dada9b1 | 543 | /* if stats are disabled we can avoid the lookup */ |
a580c76d NA |
544 | if (!br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { |
545 | if (*state == BR_STATE_FORWARDING) { | |
546 | *state = br_vlan_get_pvid_state(vg); | |
547 | return br_vlan_state_allowed(*state, true); | |
548 | } else { | |
549 | return true; | |
550 | } | |
551 | } | |
78851988 | 552 | } |
77751ee8 | 553 | v = br_vlan_find(vg, *vid); |
6dada9b1 NA |
554 | if (!v || !br_vlan_should_use(v)) |
555 | goto drop; | |
556 | ||
a580c76d NA |
557 | if (*state == BR_STATE_FORWARDING) { |
558 | *state = br_vlan_get_state(v); | |
559 | if (!br_vlan_state_allowed(*state, true)) | |
560 | goto drop; | |
561 | } | |
562 | ||
ae75767e | 563 | if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { |
6dada9b1 NA |
564 | stats = this_cpu_ptr(v->stats); |
565 | u64_stats_update_begin(&stats->syncp); | |
566 | stats->rx_bytes += skb->len; | |
567 | stats->rx_packets++; | |
568 | u64_stats_update_end(&stats->syncp); | |
569 | } | |
570 | ||
571 | return true; | |
572 | ||
eb707618 TM |
573 | drop: |
574 | kfree_skb(skb); | |
a37b85c9 VY |
575 | return false; |
576 | } | |
577 | ||
77751ee8 NA |
578 | bool br_allowed_ingress(const struct net_bridge *br, |
579 | struct net_bridge_vlan_group *vg, struct sk_buff *skb, | |
a580c76d | 580 | u16 *vid, u8 *state) |
2594e906 NA |
581 | { |
582 | /* If VLAN filtering is disabled on the bridge, all packets are | |
583 | * permitted. | |
584 | */ | |
ae75767e | 585 | if (!br_opt_get(br, BROPT_VLAN_ENABLED)) { |
2594e906 NA |
586 | BR_INPUT_SKB_CB(skb)->vlan_filtered = false; |
587 | return true; | |
588 | } | |
589 | ||
a580c76d | 590 | return __allowed_ingress(br, vg, skb, vid, state); |
2594e906 NA |
591 | } |
592 | ||
85f46c6b | 593 | /* Called under RCU. */ |
2594e906 | 594 | bool br_allowed_egress(struct net_bridge_vlan_group *vg, |
85f46c6b VY |
595 | const struct sk_buff *skb) |
596 | { | |
2594e906 | 597 | const struct net_bridge_vlan *v; |
85f46c6b VY |
598 | u16 vid; |
599 | ||
20adfa1a VY |
600 | /* If this packet was not filtered at input, let it pass */ |
601 | if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) | |
85f46c6b VY |
602 | return true; |
603 | ||
85f46c6b | 604 | br_vlan_get_tag(skb, &vid); |
2594e906 | 605 | v = br_vlan_find(vg, vid); |
a580c76d NA |
606 | if (v && br_vlan_should_use(v) && |
607 | br_vlan_state_allowed(br_vlan_get_state(v), false)) | |
85f46c6b VY |
608 | return true; |
609 | ||
610 | return false; | |
611 | } | |
612 | ||
e0d7968a TM |
613 | /* Called under RCU */ |
614 | bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) | |
615 | { | |
468e7944 | 616 | struct net_bridge_vlan_group *vg; |
e0d7968a | 617 | struct net_bridge *br = p->br; |
a580c76d | 618 | struct net_bridge_vlan *v; |
e0d7968a | 619 | |
20adfa1a | 620 | /* If filtering was disabled at input, let it pass. */ |
ae75767e | 621 | if (!br_opt_get(br, BROPT_VLAN_ENABLED)) |
e0d7968a TM |
622 | return true; |
623 | ||
eca1e006 | 624 | vg = nbp_vlan_group_rcu(p); |
468e7944 | 625 | if (!vg || !vg->num_vlans) |
e0d7968a TM |
626 | return false; |
627 | ||
8580e211 TM |
628 | if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto) |
629 | *vid = 0; | |
630 | ||
e0d7968a | 631 | if (!*vid) { |
77751ee8 | 632 | *vid = br_get_pvid(vg); |
a580c76d NA |
633 | if (!*vid || |
634 | !br_vlan_state_allowed(br_vlan_get_pvid_state(vg), true)) | |
e0d7968a TM |
635 | return false; |
636 | ||
637 | return true; | |
638 | } | |
639 | ||
a580c76d NA |
640 | v = br_vlan_find(vg, *vid); |
641 | if (v && br_vlan_state_allowed(br_vlan_get_state(v), true)) | |
e0d7968a TM |
642 | return true; |
643 | ||
644 | return false; | |
645 | } | |
646 | ||
dbd6dc75 PM |
647 | static int br_vlan_add_existing(struct net_bridge *br, |
648 | struct net_bridge_vlan_group *vg, | |
649 | struct net_bridge_vlan *vlan, | |
169327d5 PM |
650 | u16 flags, bool *changed, |
651 | struct netlink_ext_ack *extack) | |
dbd6dc75 PM |
652 | { |
653 | int err; | |
654 | ||
169327d5 | 655 | err = br_switchdev_port_vlan_add(br->dev, vlan->vid, flags, extack); |
9c86ce2c PM |
656 | if (err && err != -EOPNOTSUPP) |
657 | return err; | |
658 | ||
dbd6dc75 PM |
659 | if (!br_vlan_is_brentry(vlan)) { |
660 | /* Trying to change flags of non-existent bridge vlan */ | |
9c86ce2c PM |
661 | if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) { |
662 | err = -EINVAL; | |
663 | goto err_flags; | |
664 | } | |
dbd6dc75 PM |
665 | /* It was only kept for port vlans, now make it real */ |
666 | err = br_fdb_insert(br, NULL, br->dev->dev_addr, | |
667 | vlan->vid); | |
668 | if (err) { | |
669 | br_err(br, "failed to insert local address into bridge forwarding table\n"); | |
9c86ce2c | 670 | goto err_fdb_insert; |
dbd6dc75 PM |
671 | } |
672 | ||
673 | refcount_inc(&vlan->refcnt); | |
674 | vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY; | |
675 | vg->num_vlans++; | |
676 | *changed = true; | |
677 | } | |
678 | ||
679 | if (__vlan_add_flags(vlan, flags)) | |
680 | *changed = true; | |
681 | ||
682 | return 0; | |
9c86ce2c PM |
683 | |
684 | err_fdb_insert: | |
685 | err_flags: | |
686 | br_switchdev_port_vlan_del(br->dev, vlan->vid); | |
687 | return err; | |
dbd6dc75 PM |
688 | } |
689 | ||
8adff41c TM |
690 | /* Must be protected by RTNL. |
691 | * Must be called with vid in range from 1 to 4094 inclusive. | |
f418af63 | 692 | * changed must be true only if the vlan was created or updated |
8adff41c | 693 | */ |
169327d5 PM |
694 | int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed, |
695 | struct netlink_ext_ack *extack) | |
243a2e63 | 696 | { |
907b1e6e | 697 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
698 | struct net_bridge_vlan *vlan; |
699 | int ret; | |
243a2e63 VY |
700 | |
701 | ASSERT_RTNL(); | |
702 | ||
f418af63 | 703 | *changed = false; |
907b1e6e NA |
704 | vg = br_vlan_group(br); |
705 | vlan = br_vlan_find(vg, vid); | |
dbd6dc75 | 706 | if (vlan) |
169327d5 PM |
707 | return br_vlan_add_existing(br, vg, vlan, flags, changed, |
708 | extack); | |
243a2e63 | 709 | |
2594e906 NA |
710 | vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); |
711 | if (!vlan) | |
243a2e63 VY |
712 | return -ENOMEM; |
713 | ||
281cc284 | 714 | vlan->stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
6dada9b1 NA |
715 | if (!vlan->stats) { |
716 | kfree(vlan); | |
717 | return -ENOMEM; | |
718 | } | |
2594e906 NA |
719 | vlan->vid = vid; |
720 | vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER; | |
721 | vlan->flags &= ~BRIDGE_VLAN_INFO_PVID; | |
722 | vlan->br = br; | |
723 | if (flags & BRIDGE_VLAN_INFO_BRENTRY) | |
25127759 | 724 | refcount_set(&vlan->refcnt, 1); |
169327d5 | 725 | ret = __vlan_add(vlan, flags, extack); |
6dada9b1 NA |
726 | if (ret) { |
727 | free_percpu(vlan->stats); | |
2594e906 | 728 | kfree(vlan); |
f418af63 NA |
729 | } else { |
730 | *changed = true; | |
6dada9b1 | 731 | } |
243a2e63 | 732 | |
2594e906 | 733 | return ret; |
243a2e63 VY |
734 | } |
735 | ||
8adff41c TM |
736 | /* Must be protected by RTNL. |
737 | * Must be called with vid in range from 1 to 4094 inclusive. | |
738 | */ | |
243a2e63 VY |
739 | int br_vlan_delete(struct net_bridge *br, u16 vid) |
740 | { | |
907b1e6e | 741 | struct net_bridge_vlan_group *vg; |
2594e906 | 742 | struct net_bridge_vlan *v; |
243a2e63 VY |
743 | |
744 | ASSERT_RTNL(); | |
745 | ||
907b1e6e NA |
746 | vg = br_vlan_group(br); |
747 | v = br_vlan_find(vg, vid); | |
2594e906 NA |
748 | if (!v || !br_vlan_is_brentry(v)) |
749 | return -ENOENT; | |
243a2e63 | 750 | |
424bb9c9 | 751 | br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); |
3741873b | 752 | br_fdb_delete_by_port(br, NULL, vid, 0); |
bc9a25d2 | 753 | |
efa5356b RP |
754 | vlan_tunnel_info_del(vg, v); |
755 | ||
2594e906 | 756 | return __vlan_del(v); |
243a2e63 VY |
757 | } |
758 | ||
759 | void br_vlan_flush(struct net_bridge *br) | |
760 | { | |
f409d0ed NA |
761 | struct net_bridge_vlan_group *vg; |
762 | ||
243a2e63 | 763 | ASSERT_RTNL(); |
243a2e63 | 764 | |
f409d0ed | 765 | vg = br_vlan_group(br); |
f545923b | 766 | __vlan_flush(br, NULL, vg); |
f409d0ed NA |
767 | RCU_INIT_POINTER(br->vlgrp, NULL); |
768 | synchronize_rcu(); | |
769 | __vlan_group_free(vg); | |
243a2e63 VY |
770 | } |
771 | ||
2594e906 | 772 | struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid) |
2b292fb4 | 773 | { |
2594e906 NA |
774 | if (!vg) |
775 | return NULL; | |
2b292fb4 | 776 | |
2594e906 | 777 | return br_vlan_lookup(&vg->vlan_hash, vid); |
2b292fb4 TM |
778 | } |
779 | ||
204177f3 TM |
780 | /* Must be protected by RTNL. */ |
781 | static void recalculate_group_addr(struct net_bridge *br) | |
782 | { | |
be3664a0 | 783 | if (br_opt_get(br, BROPT_GROUP_ADDR_SET)) |
204177f3 TM |
784 | return; |
785 | ||
786 | spin_lock_bh(&br->lock); | |
ae75767e NA |
787 | if (!br_opt_get(br, BROPT_VLAN_ENABLED) || |
788 | br->vlan_proto == htons(ETH_P_8021Q)) { | |
204177f3 TM |
789 | /* Bridge Group Address */ |
790 | br->group_addr[5] = 0x00; | |
791 | } else { /* vlan_enabled && ETH_P_8021AD */ | |
792 | /* Provider Bridge Group Address */ | |
793 | br->group_addr[5] = 0x08; | |
794 | } | |
795 | spin_unlock_bh(&br->lock); | |
796 | } | |
797 | ||
798 | /* Must be protected by RTNL. */ | |
799 | void br_recalculate_fwd_mask(struct net_bridge *br) | |
800 | { | |
ae75767e NA |
801 | if (!br_opt_get(br, BROPT_VLAN_ENABLED) || |
802 | br->vlan_proto == htons(ETH_P_8021Q)) | |
204177f3 TM |
803 | br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; |
804 | else /* vlan_enabled && ETH_P_8021AD */ | |
805 | br->group_fwd_mask_required = BR_GROUPFWD_8021AD & | |
806 | ~(1u << br->group_addr[5]); | |
807 | } | |
808 | ||
9e781401 VO |
809 | int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val, |
810 | struct netlink_ext_ack *extack) | |
243a2e63 | 811 | { |
6b72a770 ER |
812 | struct switchdev_attr attr = { |
813 | .orig_dev = br->dev, | |
814 | .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, | |
815 | .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, | |
816 | .u.vlan_filtering = val, | |
817 | }; | |
818 | int err; | |
819 | ||
ae75767e | 820 | if (br_opt_get(br, BROPT_VLAN_ENABLED) == !!val) |
a7854037 | 821 | return 0; |
243a2e63 | 822 | |
dcbdf135 | 823 | err = switchdev_port_attr_set(br->dev, &attr, extack); |
6b72a770 ER |
824 | if (err && err != -EOPNOTSUPP) |
825 | return err; | |
826 | ||
ae75767e | 827 | br_opt_toggle(br, BROPT_VLAN_ENABLED, !!val); |
2796d0c6 | 828 | br_manage_promisc(br); |
204177f3 TM |
829 | recalculate_group_addr(br); |
830 | br_recalculate_fwd_mask(br); | |
243a2e63 | 831 | |
a7854037 NA |
832 | return 0; |
833 | } | |
834 | ||
1f51445a IS |
835 | bool br_vlan_enabled(const struct net_device *dev) |
836 | { | |
837 | struct net_bridge *br = netdev_priv(dev); | |
838 | ||
ae75767e | 839 | return br_opt_get(br, BROPT_VLAN_ENABLED); |
1f51445a IS |
840 | } |
841 | EXPORT_SYMBOL_GPL(br_vlan_enabled); | |
842 | ||
31aed46f | 843 | int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) |
844 | { | |
845 | struct net_bridge *br = netdev_priv(dev); | |
846 | ||
847 | *p_proto = ntohs(br->vlan_proto); | |
848 | ||
849 | return 0; | |
850 | } | |
851 | EXPORT_SYMBOL_GPL(br_vlan_get_proto); | |
852 | ||
dcbdf135 VO |
853 | int __br_vlan_set_proto(struct net_bridge *br, __be16 proto, |
854 | struct netlink_ext_ack *extack) | |
204177f3 | 855 | { |
22ec19f3 DR |
856 | struct switchdev_attr attr = { |
857 | .orig_dev = br->dev, | |
858 | .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL, | |
859 | .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, | |
860 | .u.vlan_protocol = ntohs(proto), | |
861 | }; | |
204177f3 TM |
862 | int err = 0; |
863 | struct net_bridge_port *p; | |
2594e906 | 864 | struct net_bridge_vlan *vlan; |
907b1e6e | 865 | struct net_bridge_vlan_group *vg; |
22ec19f3 | 866 | __be16 oldproto = br->vlan_proto; |
204177f3 | 867 | |
204177f3 | 868 | if (br->vlan_proto == proto) |
d2d427b3 | 869 | return 0; |
204177f3 | 870 | |
dcbdf135 | 871 | err = switchdev_port_attr_set(br->dev, &attr, extack); |
22ec19f3 DR |
872 | if (err && err != -EOPNOTSUPP) |
873 | return err; | |
874 | ||
204177f3 TM |
875 | /* Add VLANs for the new proto to the device filter. */ |
876 | list_for_each_entry(p, &br->port_list, list) { | |
907b1e6e NA |
877 | vg = nbp_vlan_group(p); |
878 | list_for_each_entry(vlan, &vg->vlan_list, vlist) { | |
2594e906 | 879 | err = vlan_vid_add(p->dev, proto, vlan->vid); |
204177f3 TM |
880 | if (err) |
881 | goto err_filt; | |
882 | } | |
883 | } | |
884 | ||
204177f3 TM |
885 | br->vlan_proto = proto; |
886 | ||
887 | recalculate_group_addr(br); | |
888 | br_recalculate_fwd_mask(br); | |
889 | ||
890 | /* Delete VLANs for the old proto from the device filter. */ | |
907b1e6e NA |
891 | list_for_each_entry(p, &br->port_list, list) { |
892 | vg = nbp_vlan_group(p); | |
893 | list_for_each_entry(vlan, &vg->vlan_list, vlist) | |
2594e906 | 894 | vlan_vid_del(p->dev, oldproto, vlan->vid); |
907b1e6e | 895 | } |
204177f3 | 896 | |
d2d427b3 | 897 | return 0; |
204177f3 TM |
898 | |
899 | err_filt: | |
22ec19f3 | 900 | attr.u.vlan_protocol = ntohs(oldproto); |
dcbdf135 | 901 | switchdev_port_attr_set(br->dev, &attr, NULL); |
22ec19f3 | 902 | |
907b1e6e | 903 | list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) |
2594e906 | 904 | vlan_vid_del(p->dev, proto, vlan->vid); |
204177f3 | 905 | |
907b1e6e NA |
906 | list_for_each_entry_continue_reverse(p, &br->port_list, list) { |
907 | vg = nbp_vlan_group(p); | |
908 | list_for_each_entry(vlan, &vg->vlan_list, vlist) | |
2594e906 | 909 | vlan_vid_del(p->dev, proto, vlan->vid); |
907b1e6e | 910 | } |
204177f3 | 911 | |
d2d427b3 TM |
912 | return err; |
913 | } | |
914 | ||
9e781401 VO |
915 | int br_vlan_set_proto(struct net_bridge *br, unsigned long val, |
916 | struct netlink_ext_ack *extack) | |
d2d427b3 | 917 | { |
a98c0c47 | 918 | if (!eth_type_vlan(htons(val))) |
d2d427b3 TM |
919 | return -EPROTONOSUPPORT; |
920 | ||
dcbdf135 | 921 | return __br_vlan_set_proto(br, htons(val), extack); |
204177f3 TM |
922 | } |
923 | ||
6dada9b1 NA |
924 | int br_vlan_set_stats(struct net_bridge *br, unsigned long val) |
925 | { | |
926 | switch (val) { | |
927 | case 0: | |
928 | case 1: | |
ae75767e | 929 | br_opt_toggle(br, BROPT_VLAN_STATS_ENABLED, !!val); |
6dada9b1 NA |
930 | break; |
931 | default: | |
9163a0fc NA |
932 | return -EINVAL; |
933 | } | |
934 | ||
935 | return 0; | |
936 | } | |
937 | ||
938 | int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val) | |
939 | { | |
940 | struct net_bridge_port *p; | |
941 | ||
942 | /* allow to change the option if there are no port vlans configured */ | |
943 | list_for_each_entry(p, &br->port_list, list) { | |
944 | struct net_bridge_vlan_group *vg = nbp_vlan_group(p); | |
945 | ||
946 | if (vg->num_vlans) | |
947 | return -EBUSY; | |
948 | } | |
949 | ||
950 | switch (val) { | |
951 | case 0: | |
952 | case 1: | |
953 | br_opt_toggle(br, BROPT_VLAN_STATS_PER_PORT, !!val); | |
954 | break; | |
955 | default: | |
6dada9b1 NA |
956 | return -EINVAL; |
957 | } | |
958 | ||
959 | return 0; | |
960 | } | |
961 | ||
77751ee8 | 962 | static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid) |
5be5a2df | 963 | { |
2594e906 NA |
964 | struct net_bridge_vlan *v; |
965 | ||
77751ee8 | 966 | if (vid != vg->pvid) |
2594e906 NA |
967 | return false; |
968 | ||
969 | v = br_vlan_lookup(&vg->vlan_hash, vid); | |
970 | if (v && br_vlan_should_use(v) && | |
971 | (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) | |
972 | return true; | |
973 | ||
974 | return false; | |
5be5a2df VY |
975 | } |
976 | ||
977 | static void br_vlan_disable_default_pvid(struct net_bridge *br) | |
978 | { | |
979 | struct net_bridge_port *p; | |
980 | u16 pvid = br->default_pvid; | |
981 | ||
982 | /* Disable default_pvid on all ports where it is still | |
983 | * configured. | |
984 | */ | |
f545923b NA |
985 | if (vlan_default_pvid(br_vlan_group(br), pvid)) { |
986 | if (!br_vlan_delete(br, pvid)) | |
987 | br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN); | |
988 | } | |
5be5a2df VY |
989 | |
990 | list_for_each_entry(p, &br->port_list, list) { | |
f545923b NA |
991 | if (vlan_default_pvid(nbp_vlan_group(p), pvid) && |
992 | !nbp_vlan_delete(p, pvid)) | |
993 | br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN); | |
5be5a2df VY |
994 | } |
995 | ||
996 | br->default_pvid = 0; | |
997 | } | |
998 | ||
169327d5 PM |
999 | int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, |
1000 | struct netlink_ext_ack *extack) | |
5be5a2df | 1001 | { |
2594e906 | 1002 | const struct net_bridge_vlan *pvent; |
907b1e6e | 1003 | struct net_bridge_vlan_group *vg; |
5be5a2df | 1004 | struct net_bridge_port *p; |
f418af63 NA |
1005 | unsigned long *changed; |
1006 | bool vlchange; | |
5be5a2df VY |
1007 | u16 old_pvid; |
1008 | int err = 0; | |
5be5a2df | 1009 | |
0f963b75 NA |
1010 | if (!pvid) { |
1011 | br_vlan_disable_default_pvid(br); | |
1012 | return 0; | |
1013 | } | |
1014 | ||
459479da | 1015 | changed = bitmap_zalloc(BR_MAX_PORTS, GFP_KERNEL); |
5be5a2df VY |
1016 | if (!changed) |
1017 | return -ENOMEM; | |
1018 | ||
1019 | old_pvid = br->default_pvid; | |
1020 | ||
1021 | /* Update default_pvid config only if we do not conflict with | |
1022 | * user configuration. | |
1023 | */ | |
907b1e6e NA |
1024 | vg = br_vlan_group(br); |
1025 | pvent = br_vlan_find(vg, pvid); | |
1026 | if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) && | |
2594e906 | 1027 | (!pvent || !br_vlan_should_use(pvent))) { |
5be5a2df VY |
1028 | err = br_vlan_add(br, pvid, |
1029 | BRIDGE_VLAN_INFO_PVID | | |
2594e906 | 1030 | BRIDGE_VLAN_INFO_UNTAGGED | |
f418af63 | 1031 | BRIDGE_VLAN_INFO_BRENTRY, |
169327d5 | 1032 | &vlchange, extack); |
5be5a2df VY |
1033 | if (err) |
1034 | goto out; | |
f545923b NA |
1035 | |
1036 | if (br_vlan_delete(br, old_pvid)) | |
1037 | br_vlan_notify(br, NULL, old_pvid, 0, RTM_DELVLAN); | |
1038 | br_vlan_notify(br, NULL, pvid, 0, RTM_NEWVLAN); | |
5be5a2df VY |
1039 | set_bit(0, changed); |
1040 | } | |
1041 | ||
1042 | list_for_each_entry(p, &br->port_list, list) { | |
1043 | /* Update default_pvid config only if we do not conflict with | |
1044 | * user configuration. | |
1045 | */ | |
907b1e6e | 1046 | vg = nbp_vlan_group(p); |
5be5a2df | 1047 | if ((old_pvid && |
907b1e6e NA |
1048 | !vlan_default_pvid(vg, old_pvid)) || |
1049 | br_vlan_find(vg, pvid)) | |
5be5a2df VY |
1050 | continue; |
1051 | ||
1052 | err = nbp_vlan_add(p, pvid, | |
1053 | BRIDGE_VLAN_INFO_PVID | | |
f418af63 | 1054 | BRIDGE_VLAN_INFO_UNTAGGED, |
169327d5 | 1055 | &vlchange, extack); |
5be5a2df VY |
1056 | if (err) |
1057 | goto err_port; | |
f545923b NA |
1058 | if (nbp_vlan_delete(p, old_pvid)) |
1059 | br_vlan_notify(br, p, old_pvid, 0, RTM_DELVLAN); | |
1060 | br_vlan_notify(p->br, p, pvid, 0, RTM_NEWVLAN); | |
5be5a2df VY |
1061 | set_bit(p->port_no, changed); |
1062 | } | |
1063 | ||
1064 | br->default_pvid = pvid; | |
1065 | ||
1066 | out: | |
459479da | 1067 | bitmap_free(changed); |
5be5a2df VY |
1068 | return err; |
1069 | ||
1070 | err_port: | |
1071 | list_for_each_entry_continue_reverse(p, &br->port_list, list) { | |
1072 | if (!test_bit(p->port_no, changed)) | |
1073 | continue; | |
1074 | ||
f545923b | 1075 | if (old_pvid) { |
5be5a2df VY |
1076 | nbp_vlan_add(p, old_pvid, |
1077 | BRIDGE_VLAN_INFO_PVID | | |
f418af63 | 1078 | BRIDGE_VLAN_INFO_UNTAGGED, |
169327d5 | 1079 | &vlchange, NULL); |
f545923b NA |
1080 | br_vlan_notify(p->br, p, old_pvid, 0, RTM_NEWVLAN); |
1081 | } | |
5be5a2df | 1082 | nbp_vlan_delete(p, pvid); |
f545923b | 1083 | br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN); |
5be5a2df VY |
1084 | } |
1085 | ||
1086 | if (test_bit(0, changed)) { | |
f545923b | 1087 | if (old_pvid) { |
5be5a2df VY |
1088 | br_vlan_add(br, old_pvid, |
1089 | BRIDGE_VLAN_INFO_PVID | | |
2594e906 | 1090 | BRIDGE_VLAN_INFO_UNTAGGED | |
f418af63 | 1091 | BRIDGE_VLAN_INFO_BRENTRY, |
169327d5 | 1092 | &vlchange, NULL); |
f545923b NA |
1093 | br_vlan_notify(br, NULL, old_pvid, 0, RTM_NEWVLAN); |
1094 | } | |
5be5a2df | 1095 | br_vlan_delete(br, pvid); |
f545923b | 1096 | br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN); |
5be5a2df VY |
1097 | } |
1098 | goto out; | |
1099 | } | |
1100 | ||
9e781401 VO |
1101 | int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val, |
1102 | struct netlink_ext_ack *extack) | |
96a20d9d VY |
1103 | { |
1104 | u16 pvid = val; | |
1105 | int err = 0; | |
1106 | ||
5be5a2df | 1107 | if (val >= VLAN_VID_MASK) |
96a20d9d VY |
1108 | return -EINVAL; |
1109 | ||
96a20d9d | 1110 | if (pvid == br->default_pvid) |
047831a9 | 1111 | goto out; |
96a20d9d VY |
1112 | |
1113 | /* Only allow default pvid change when filtering is disabled */ | |
ae75767e | 1114 | if (br_opt_get(br, BROPT_VLAN_ENABLED)) { |
96a20d9d VY |
1115 | pr_info_once("Please disable vlan filtering to change default_pvid\n"); |
1116 | err = -EPERM; | |
047831a9 | 1117 | goto out; |
96a20d9d | 1118 | } |
9e781401 | 1119 | err = __br_vlan_set_default_pvid(br, pvid, extack); |
047831a9 | 1120 | out: |
96a20d9d VY |
1121 | return err; |
1122 | } | |
1123 | ||
5be5a2df | 1124 | int br_vlan_init(struct net_bridge *br) |
8580e211 | 1125 | { |
907b1e6e | 1126 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
1127 | int ret = -ENOMEM; |
1128 | ||
907b1e6e NA |
1129 | vg = kzalloc(sizeof(*vg), GFP_KERNEL); |
1130 | if (!vg) | |
2594e906 | 1131 | goto out; |
907b1e6e | 1132 | ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); |
2594e906 NA |
1133 | if (ret) |
1134 | goto err_rhtbl; | |
efa5356b RP |
1135 | ret = vlan_tunnel_init(vg); |
1136 | if (ret) | |
1137 | goto err_tunnel_init; | |
907b1e6e | 1138 | INIT_LIST_HEAD(&vg->vlan_list); |
8580e211 | 1139 | br->vlan_proto = htons(ETH_P_8021Q); |
96a20d9d | 1140 | br->default_pvid = 1; |
907b1e6e | 1141 | rcu_assign_pointer(br->vlgrp, vg); |
2594e906 NA |
1142 | |
1143 | out: | |
1144 | return ret; | |
1145 | ||
efa5356b | 1146 | err_tunnel_init: |
907b1e6e | 1147 | rhashtable_destroy(&vg->vlan_hash); |
2594e906 | 1148 | err_rhtbl: |
907b1e6e | 1149 | kfree(vg); |
2594e906 NA |
1150 | |
1151 | goto out; | |
1152 | } | |
1153 | ||
169327d5 | 1154 | int nbp_vlan_init(struct net_bridge_port *p, struct netlink_ext_ack *extack) |
2594e906 | 1155 | { |
404cdbf0 ER |
1156 | struct switchdev_attr attr = { |
1157 | .orig_dev = p->br->dev, | |
1158 | .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, | |
1159 | .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, | |
ae75767e | 1160 | .u.vlan_filtering = br_opt_get(p->br, BROPT_VLAN_ENABLED), |
404cdbf0 | 1161 | }; |
263344e6 | 1162 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
1163 | int ret = -ENOMEM; |
1164 | ||
263344e6 NA |
1165 | vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); |
1166 | if (!vg) | |
2594e906 NA |
1167 | goto out; |
1168 | ||
dcbdf135 | 1169 | ret = switchdev_port_attr_set(p->dev, &attr, extack); |
404cdbf0 ER |
1170 | if (ret && ret != -EOPNOTSUPP) |
1171 | goto err_vlan_enabled; | |
1172 | ||
263344e6 | 1173 | ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); |
2594e906 NA |
1174 | if (ret) |
1175 | goto err_rhtbl; | |
efa5356b RP |
1176 | ret = vlan_tunnel_init(vg); |
1177 | if (ret) | |
1178 | goto err_tunnel_init; | |
263344e6 | 1179 | INIT_LIST_HEAD(&vg->vlan_list); |
907b1e6e | 1180 | rcu_assign_pointer(p->vlgrp, vg); |
2594e906 | 1181 | if (p->br->default_pvid) { |
f418af63 NA |
1182 | bool changed; |
1183 | ||
2594e906 NA |
1184 | ret = nbp_vlan_add(p, p->br->default_pvid, |
1185 | BRIDGE_VLAN_INFO_PVID | | |
f418af63 | 1186 | BRIDGE_VLAN_INFO_UNTAGGED, |
169327d5 | 1187 | &changed, extack); |
2594e906 NA |
1188 | if (ret) |
1189 | goto err_vlan_add; | |
f545923b | 1190 | br_vlan_notify(p->br, p, p->br->default_pvid, 0, RTM_NEWVLAN); |
2594e906 NA |
1191 | } |
1192 | out: | |
1193 | return ret; | |
1194 | ||
1195 | err_vlan_add: | |
07bc588f IS |
1196 | RCU_INIT_POINTER(p->vlgrp, NULL); |
1197 | synchronize_rcu(); | |
efa5356b | 1198 | vlan_tunnel_deinit(vg); |
efa5356b RP |
1199 | err_tunnel_init: |
1200 | rhashtable_destroy(&vg->vlan_hash); | |
2594e906 | 1201 | err_rhtbl: |
df2c4334 | 1202 | err_vlan_enabled: |
263344e6 | 1203 | kfree(vg); |
2594e906 NA |
1204 | |
1205 | goto out; | |
8580e211 TM |
1206 | } |
1207 | ||
8adff41c TM |
1208 | /* Must be protected by RTNL. |
1209 | * Must be called with vid in range from 1 to 4094 inclusive. | |
f418af63 | 1210 | * changed must be true only if the vlan was created or updated |
8adff41c | 1211 | */ |
f418af63 | 1212 | int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, |
169327d5 | 1213 | bool *changed, struct netlink_ext_ack *extack) |
243a2e63 | 1214 | { |
2594e906 NA |
1215 | struct net_bridge_vlan *vlan; |
1216 | int ret; | |
243a2e63 VY |
1217 | |
1218 | ASSERT_RTNL(); | |
1219 | ||
f418af63 | 1220 | *changed = false; |
907b1e6e | 1221 | vlan = br_vlan_find(nbp_vlan_group(port), vid); |
2594e906 | 1222 | if (vlan) { |
7fbac984 | 1223 | /* Pass the flags to the hardware bridge */ |
169327d5 | 1224 | ret = br_switchdev_port_vlan_add(port->dev, vid, flags, extack); |
7fbac984 IS |
1225 | if (ret && ret != -EOPNOTSUPP) |
1226 | return ret; | |
f418af63 NA |
1227 | *changed = __vlan_add_flags(vlan, flags); |
1228 | ||
2594e906 | 1229 | return 0; |
243a2e63 VY |
1230 | } |
1231 | ||
2594e906 NA |
1232 | vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); |
1233 | if (!vlan) | |
1234 | return -ENOMEM; | |
243a2e63 | 1235 | |
2594e906 NA |
1236 | vlan->vid = vid; |
1237 | vlan->port = port; | |
169327d5 | 1238 | ret = __vlan_add(vlan, flags, extack); |
2594e906 NA |
1239 | if (ret) |
1240 | kfree(vlan); | |
f418af63 NA |
1241 | else |
1242 | *changed = true; | |
243a2e63 | 1243 | |
2594e906 | 1244 | return ret; |
243a2e63 VY |
1245 | } |
1246 | ||
8adff41c TM |
1247 | /* Must be protected by RTNL. |
1248 | * Must be called with vid in range from 1 to 4094 inclusive. | |
1249 | */ | |
243a2e63 VY |
1250 | int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) |
1251 | { | |
2594e906 | 1252 | struct net_bridge_vlan *v; |
243a2e63 VY |
1253 | |
1254 | ASSERT_RTNL(); | |
1255 | ||
907b1e6e | 1256 | v = br_vlan_find(nbp_vlan_group(port), vid); |
2594e906 NA |
1257 | if (!v) |
1258 | return -ENOENT; | |
424bb9c9 | 1259 | br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); |
1ea2d020 | 1260 | br_fdb_delete_by_port(port->br, port, vid, 0); |
bc9a25d2 | 1261 | |
2594e906 | 1262 | return __vlan_del(v); |
243a2e63 VY |
1263 | } |
1264 | ||
1265 | void nbp_vlan_flush(struct net_bridge_port *port) | |
1266 | { | |
f409d0ed NA |
1267 | struct net_bridge_vlan_group *vg; |
1268 | ||
243a2e63 VY |
1269 | ASSERT_RTNL(); |
1270 | ||
f409d0ed | 1271 | vg = nbp_vlan_group(port); |
f545923b | 1272 | __vlan_flush(port->br, port, vg); |
f409d0ed NA |
1273 | RCU_INIT_POINTER(port->vlgrp, NULL); |
1274 | synchronize_rcu(); | |
1275 | __vlan_group_free(vg); | |
5be5a2df | 1276 | } |
a60c0903 NA |
1277 | |
1278 | void br_vlan_get_stats(const struct net_bridge_vlan *v, | |
281cc284 | 1279 | struct pcpu_sw_netstats *stats) |
a60c0903 NA |
1280 | { |
1281 | int i; | |
1282 | ||
1283 | memset(stats, 0, sizeof(*stats)); | |
1284 | for_each_possible_cpu(i) { | |
1285 | u64 rxpackets, rxbytes, txpackets, txbytes; | |
281cc284 | 1286 | struct pcpu_sw_netstats *cpu_stats; |
a60c0903 NA |
1287 | unsigned int start; |
1288 | ||
1289 | cpu_stats = per_cpu_ptr(v->stats, i); | |
1290 | do { | |
1291 | start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); | |
1292 | rxpackets = cpu_stats->rx_packets; | |
1293 | rxbytes = cpu_stats->rx_bytes; | |
1294 | txbytes = cpu_stats->tx_bytes; | |
1295 | txpackets = cpu_stats->tx_packets; | |
1296 | } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); | |
1297 | ||
1298 | stats->rx_packets += rxpackets; | |
1299 | stats->rx_bytes += rxbytes; | |
1300 | stats->tx_bytes += txbytes; | |
1301 | stats->tx_packets += txpackets; | |
1302 | } | |
1303 | } | |
4d4fd361 | 1304 | |
99f62a74 | 1305 | int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) |
4d4fd361 PM |
1306 | { |
1307 | struct net_bridge_vlan_group *vg; | |
99f62a74 | 1308 | struct net_bridge_port *p; |
4d4fd361 | 1309 | |
99f62a74 VO |
1310 | ASSERT_RTNL(); |
1311 | p = br_port_get_check_rtnl(dev); | |
5a6db04c IS |
1312 | if (p) |
1313 | vg = nbp_vlan_group(p); | |
1314 | else if (netif_is_bridge_master(dev)) | |
4d4fd361 PM |
1315 | vg = br_vlan_group(netdev_priv(dev)); |
1316 | else | |
1317 | return -EINVAL; | |
1318 | ||
1319 | *p_pvid = br_get_pvid(vg); | |
1320 | return 0; | |
1321 | } | |
1322 | EXPORT_SYMBOL_GPL(br_vlan_get_pvid); | |
1323 | ||
7582f5b7 PNA |
1324 | int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) |
1325 | { | |
99f62a74 VO |
1326 | struct net_bridge_vlan_group *vg; |
1327 | struct net_bridge_port *p; | |
1328 | ||
1329 | p = br_port_get_check_rcu(dev); | |
1330 | if (p) | |
1331 | vg = nbp_vlan_group_rcu(p); | |
1332 | else if (netif_is_bridge_master(dev)) | |
1333 | vg = br_vlan_group_rcu(netdev_priv(dev)); | |
1334 | else | |
1335 | return -EINVAL; | |
1336 | ||
1337 | *p_pvid = br_get_pvid(vg); | |
1338 | return 0; | |
7582f5b7 PNA |
1339 | } |
1340 | EXPORT_SYMBOL_GPL(br_vlan_get_pvid_rcu); | |
1341 | ||
4d4fd361 PM |
1342 | int br_vlan_get_info(const struct net_device *dev, u16 vid, |
1343 | struct bridge_vlan_info *p_vinfo) | |
1344 | { | |
1345 | struct net_bridge_vlan_group *vg; | |
1346 | struct net_bridge_vlan *v; | |
1347 | struct net_bridge_port *p; | |
1348 | ||
1349 | ASSERT_RTNL(); | |
1350 | p = br_port_get_check_rtnl(dev); | |
1351 | if (p) | |
1352 | vg = nbp_vlan_group(p); | |
2b18d79e PM |
1353 | else if (netif_is_bridge_master(dev)) |
1354 | vg = br_vlan_group(netdev_priv(dev)); | |
4d4fd361 PM |
1355 | else |
1356 | return -EINVAL; | |
1357 | ||
1358 | v = br_vlan_find(vg, vid); | |
1359 | if (!v) | |
1360 | return -ENOENT; | |
1361 | ||
1362 | p_vinfo->vid = vid; | |
1363 | p_vinfo->flags = v->flags; | |
f40d9b20 VO |
1364 | if (vid == br_get_pvid(vg)) |
1365 | p_vinfo->flags |= BRIDGE_VLAN_INFO_PVID; | |
4d4fd361 PM |
1366 | return 0; |
1367 | } | |
1368 | EXPORT_SYMBOL_GPL(br_vlan_get_info); | |
9c0ec2e7 MM |
1369 | |
1370 | static int br_vlan_is_bind_vlan_dev(const struct net_device *dev) | |
1371 | { | |
1372 | return is_vlan_dev(dev) && | |
1373 | !!(vlan_dev_priv(dev)->flags & VLAN_FLAG_BRIDGE_BINDING); | |
1374 | } | |
1375 | ||
1376 | static int br_vlan_is_bind_vlan_dev_fn(struct net_device *dev, | |
eff74233 | 1377 | __always_unused struct netdev_nested_priv *priv) |
9c0ec2e7 MM |
1378 | { |
1379 | return br_vlan_is_bind_vlan_dev(dev); | |
1380 | } | |
1381 | ||
1382 | static bool br_vlan_has_upper_bind_vlan_dev(struct net_device *dev) | |
1383 | { | |
1384 | int found; | |
1385 | ||
1386 | rcu_read_lock(); | |
1387 | found = netdev_walk_all_upper_dev_rcu(dev, br_vlan_is_bind_vlan_dev_fn, | |
1388 | NULL); | |
1389 | rcu_read_unlock(); | |
1390 | ||
1391 | return !!found; | |
1392 | } | |
1393 | ||
1394 | struct br_vlan_bind_walk_data { | |
1395 | u16 vid; | |
1396 | struct net_device *result; | |
1397 | }; | |
1398 | ||
1399 | static int br_vlan_match_bind_vlan_dev_fn(struct net_device *dev, | |
eff74233 | 1400 | struct netdev_nested_priv *priv) |
9c0ec2e7 | 1401 | { |
eff74233 | 1402 | struct br_vlan_bind_walk_data *data = priv->data; |
9c0ec2e7 MM |
1403 | int found = 0; |
1404 | ||
1405 | if (br_vlan_is_bind_vlan_dev(dev) && | |
1406 | vlan_dev_priv(dev)->vlan_id == data->vid) { | |
1407 | data->result = dev; | |
1408 | found = 1; | |
1409 | } | |
1410 | ||
1411 | return found; | |
1412 | } | |
1413 | ||
1414 | static struct net_device * | |
1415 | br_vlan_get_upper_bind_vlan_dev(struct net_device *dev, u16 vid) | |
1416 | { | |
1417 | struct br_vlan_bind_walk_data data = { | |
1418 | .vid = vid, | |
1419 | }; | |
eff74233 TY |
1420 | struct netdev_nested_priv priv = { |
1421 | .data = (void *)&data, | |
1422 | }; | |
9c0ec2e7 MM |
1423 | |
1424 | rcu_read_lock(); | |
1425 | netdev_walk_all_upper_dev_rcu(dev, br_vlan_match_bind_vlan_dev_fn, | |
eff74233 | 1426 | &priv); |
9c0ec2e7 MM |
1427 | rcu_read_unlock(); |
1428 | ||
1429 | return data.result; | |
1430 | } | |
1431 | ||
1432 | static bool br_vlan_is_dev_up(const struct net_device *dev) | |
1433 | { | |
1434 | return !!(dev->flags & IFF_UP) && netif_oper_up(dev); | |
1435 | } | |
1436 | ||
1437 | static void br_vlan_set_vlan_dev_state(const struct net_bridge *br, | |
1438 | struct net_device *vlan_dev) | |
1439 | { | |
1440 | u16 vid = vlan_dev_priv(vlan_dev)->vlan_id; | |
1441 | struct net_bridge_vlan_group *vg; | |
1442 | struct net_bridge_port *p; | |
1443 | bool has_carrier = false; | |
1444 | ||
8e1acd4f MM |
1445 | if (!netif_carrier_ok(br->dev)) { |
1446 | netif_carrier_off(vlan_dev); | |
1447 | return; | |
1448 | } | |
1449 | ||
9c0ec2e7 MM |
1450 | list_for_each_entry(p, &br->port_list, list) { |
1451 | vg = nbp_vlan_group(p); | |
1452 | if (br_vlan_find(vg, vid) && br_vlan_is_dev_up(p->dev)) { | |
1453 | has_carrier = true; | |
1454 | break; | |
1455 | } | |
1456 | } | |
1457 | ||
1458 | if (has_carrier) | |
1459 | netif_carrier_on(vlan_dev); | |
1460 | else | |
1461 | netif_carrier_off(vlan_dev); | |
1462 | } | |
1463 | ||
1464 | static void br_vlan_set_all_vlan_dev_state(struct net_bridge_port *p) | |
1465 | { | |
1466 | struct net_bridge_vlan_group *vg = nbp_vlan_group(p); | |
1467 | struct net_bridge_vlan *vlan; | |
1468 | struct net_device *vlan_dev; | |
1469 | ||
1470 | list_for_each_entry(vlan, &vg->vlan_list, vlist) { | |
1471 | vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, | |
1472 | vlan->vid); | |
1473 | if (vlan_dev) { | |
8e1acd4f MM |
1474 | if (br_vlan_is_dev_up(p->dev)) { |
1475 | if (netif_carrier_ok(p->br->dev)) | |
1476 | netif_carrier_on(vlan_dev); | |
1477 | } else { | |
9c0ec2e7 | 1478 | br_vlan_set_vlan_dev_state(p->br, vlan_dev); |
8e1acd4f | 1479 | } |
9c0ec2e7 MM |
1480 | } |
1481 | } | |
1482 | } | |
1483 | ||
1484 | static void br_vlan_upper_change(struct net_device *dev, | |
1485 | struct net_device *upper_dev, | |
1486 | bool linking) | |
1487 | { | |
1488 | struct net_bridge *br = netdev_priv(dev); | |
1489 | ||
1490 | if (!br_vlan_is_bind_vlan_dev(upper_dev)) | |
1491 | return; | |
1492 | ||
1493 | if (linking) { | |
1494 | br_vlan_set_vlan_dev_state(br, upper_dev); | |
1495 | br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, true); | |
1496 | } else { | |
1497 | br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, | |
1498 | br_vlan_has_upper_bind_vlan_dev(dev)); | |
1499 | } | |
1500 | } | |
1501 | ||
8e1acd4f MM |
1502 | struct br_vlan_link_state_walk_data { |
1503 | struct net_bridge *br; | |
1504 | }; | |
1505 | ||
1506 | static int br_vlan_link_state_change_fn(struct net_device *vlan_dev, | |
eff74233 | 1507 | struct netdev_nested_priv *priv) |
8e1acd4f | 1508 | { |
eff74233 | 1509 | struct br_vlan_link_state_walk_data *data = priv->data; |
8e1acd4f MM |
1510 | |
1511 | if (br_vlan_is_bind_vlan_dev(vlan_dev)) | |
1512 | br_vlan_set_vlan_dev_state(data->br, vlan_dev); | |
1513 | ||
1514 | return 0; | |
1515 | } | |
1516 | ||
1517 | static void br_vlan_link_state_change(struct net_device *dev, | |
1518 | struct net_bridge *br) | |
1519 | { | |
1520 | struct br_vlan_link_state_walk_data data = { | |
1521 | .br = br | |
1522 | }; | |
eff74233 TY |
1523 | struct netdev_nested_priv priv = { |
1524 | .data = (void *)&data, | |
1525 | }; | |
8e1acd4f MM |
1526 | |
1527 | rcu_read_lock(); | |
1528 | netdev_walk_all_upper_dev_rcu(dev, br_vlan_link_state_change_fn, | |
eff74233 | 1529 | &priv); |
8e1acd4f MM |
1530 | rcu_read_unlock(); |
1531 | } | |
1532 | ||
80900acd MM |
1533 | /* Must be protected by RTNL. */ |
1534 | static void nbp_vlan_set_vlan_dev_state(struct net_bridge_port *p, u16 vid) | |
1535 | { | |
1536 | struct net_device *vlan_dev; | |
1537 | ||
1538 | if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING)) | |
1539 | return; | |
1540 | ||
1541 | vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, vid); | |
1542 | if (vlan_dev) | |
1543 | br_vlan_set_vlan_dev_state(p->br, vlan_dev); | |
1544 | } | |
1545 | ||
9c0ec2e7 | 1546 | /* Must be protected by RTNL. */ |
091adf9b | 1547 | int br_vlan_bridge_event(struct net_device *dev, unsigned long event, void *ptr) |
9c0ec2e7 MM |
1548 | { |
1549 | struct netdev_notifier_changeupper_info *info; | |
091adf9b | 1550 | struct net_bridge *br = netdev_priv(dev); |
f545923b NA |
1551 | int vlcmd = 0, ret = 0; |
1552 | bool changed = false; | |
9c0ec2e7 MM |
1553 | |
1554 | switch (event) { | |
091adf9b NA |
1555 | case NETDEV_REGISTER: |
1556 | ret = br_vlan_add(br, br->default_pvid, | |
1557 | BRIDGE_VLAN_INFO_PVID | | |
1558 | BRIDGE_VLAN_INFO_UNTAGGED | | |
1559 | BRIDGE_VLAN_INFO_BRENTRY, &changed, NULL); | |
f545923b | 1560 | vlcmd = RTM_NEWVLAN; |
091adf9b NA |
1561 | break; |
1562 | case NETDEV_UNREGISTER: | |
f545923b NA |
1563 | changed = !br_vlan_delete(br, br->default_pvid); |
1564 | vlcmd = RTM_DELVLAN; | |
091adf9b | 1565 | break; |
9c0ec2e7 MM |
1566 | case NETDEV_CHANGEUPPER: |
1567 | info = ptr; | |
1568 | br_vlan_upper_change(dev, info->upper_dev, info->linking); | |
1569 | break; | |
8e1acd4f MM |
1570 | |
1571 | case NETDEV_CHANGE: | |
1572 | case NETDEV_UP: | |
8e1acd4f | 1573 | if (!br_opt_get(br, BROPT_VLAN_BRIDGE_BINDING)) |
091adf9b | 1574 | break; |
8e1acd4f MM |
1575 | br_vlan_link_state_change(dev, br); |
1576 | break; | |
9c0ec2e7 | 1577 | } |
f545923b NA |
1578 | if (changed) |
1579 | br_vlan_notify(br, NULL, br->default_pvid, 0, vlcmd); | |
091adf9b NA |
1580 | |
1581 | return ret; | |
9c0ec2e7 MM |
1582 | } |
1583 | ||
1584 | /* Must be protected by RTNL. */ | |
1585 | void br_vlan_port_event(struct net_bridge_port *p, unsigned long event) | |
1586 | { | |
1587 | if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING)) | |
1588 | return; | |
1589 | ||
1590 | switch (event) { | |
1591 | case NETDEV_CHANGE: | |
1592 | case NETDEV_DOWN: | |
1593 | case NETDEV_UP: | |
1594 | br_vlan_set_all_vlan_dev_state(p); | |
1595 | break; | |
1596 | } | |
1597 | } | |
8dcea187 | 1598 | |
56d09976 NA |
1599 | static bool br_vlan_stats_fill(struct sk_buff *skb, |
1600 | const struct net_bridge_vlan *v) | |
1601 | { | |
281cc284 | 1602 | struct pcpu_sw_netstats stats; |
56d09976 NA |
1603 | struct nlattr *nest; |
1604 | ||
1605 | nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY_STATS); | |
1606 | if (!nest) | |
1607 | return false; | |
1608 | ||
1609 | br_vlan_get_stats(v, &stats); | |
1610 | if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_BYTES, stats.rx_bytes, | |
1611 | BRIDGE_VLANDB_STATS_PAD) || | |
1612 | nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_PACKETS, | |
1613 | stats.rx_packets, BRIDGE_VLANDB_STATS_PAD) || | |
1614 | nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_BYTES, stats.tx_bytes, | |
1615 | BRIDGE_VLANDB_STATS_PAD) || | |
1616 | nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_PACKETS, | |
1617 | stats.tx_packets, BRIDGE_VLANDB_STATS_PAD)) | |
1618 | goto out_err; | |
1619 | ||
1620 | nla_nest_end(skb, nest); | |
1621 | ||
1622 | return true; | |
1623 | ||
1624 | out_err: | |
1625 | nla_nest_cancel(skb, nest); | |
1626 | return false; | |
1627 | } | |
1628 | ||
7a53e718 | 1629 | /* v_opts is used to dump the options which must be equal in the whole range */ |
0ab55879 | 1630 | static bool br_vlan_fill_vids(struct sk_buff *skb, u16 vid, u16 vid_range, |
7a53e718 | 1631 | const struct net_bridge_vlan *v_opts, |
56d09976 NA |
1632 | u16 flags, |
1633 | bool dump_stats) | |
8dcea187 NA |
1634 | { |
1635 | struct bridge_vlan_info info; | |
1636 | struct nlattr *nest; | |
1637 | ||
1638 | nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY); | |
1639 | if (!nest) | |
1640 | return false; | |
1641 | ||
1642 | memset(&info, 0, sizeof(info)); | |
1643 | info.vid = vid; | |
1644 | if (flags & BRIDGE_VLAN_INFO_UNTAGGED) | |
1645 | info.flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
1646 | if (flags & BRIDGE_VLAN_INFO_PVID) | |
1647 | info.flags |= BRIDGE_VLAN_INFO_PVID; | |
1648 | ||
1649 | if (nla_put(skb, BRIDGE_VLANDB_ENTRY_INFO, sizeof(info), &info)) | |
1650 | goto out_err; | |
1651 | ||
0ab55879 NA |
1652 | if (vid_range && vid < vid_range && |
1653 | !(flags & BRIDGE_VLAN_INFO_PVID) && | |
1654 | nla_put_u16(skb, BRIDGE_VLANDB_ENTRY_RANGE, vid_range)) | |
1655 | goto out_err; | |
1656 | ||
56d09976 NA |
1657 | if (v_opts) { |
1658 | if (!br_vlan_opts_fill(skb, v_opts)) | |
1659 | goto out_err; | |
1660 | ||
1661 | if (dump_stats && !br_vlan_stats_fill(skb, v_opts)) | |
1662 | goto out_err; | |
1663 | } | |
7a53e718 | 1664 | |
8dcea187 NA |
1665 | nla_nest_end(skb, nest); |
1666 | ||
1667 | return true; | |
1668 | ||
1669 | out_err: | |
1670 | nla_nest_cancel(skb, nest); | |
1671 | return false; | |
1672 | } | |
1673 | ||
cf5bddb9 NA |
1674 | static size_t rtnl_vlan_nlmsg_size(void) |
1675 | { | |
1676 | return NLMSG_ALIGN(sizeof(struct br_vlan_msg)) | |
1677 | + nla_total_size(0) /* BRIDGE_VLANDB_ENTRY */ | |
1678 | + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_ENTRY_RANGE */ | |
7a53e718 NA |
1679 | + nla_total_size(sizeof(struct bridge_vlan_info)) /* BRIDGE_VLANDB_ENTRY_INFO */ |
1680 | + br_vlan_opts_nl_size(); /* bridge vlan options */ | |
cf5bddb9 NA |
1681 | } |
1682 | ||
1683 | void br_vlan_notify(const struct net_bridge *br, | |
1684 | const struct net_bridge_port *p, | |
1685 | u16 vid, u16 vid_range, | |
1686 | int cmd) | |
1687 | { | |
1688 | struct net_bridge_vlan_group *vg; | |
7a53e718 | 1689 | struct net_bridge_vlan *v = NULL; |
cf5bddb9 NA |
1690 | struct br_vlan_msg *bvm; |
1691 | struct nlmsghdr *nlh; | |
1692 | struct sk_buff *skb; | |
1693 | int err = -ENOBUFS; | |
1694 | struct net *net; | |
1695 | u16 flags = 0; | |
1696 | int ifindex; | |
1697 | ||
1698 | /* right now notifications are done only with rtnl held */ | |
1699 | ASSERT_RTNL(); | |
1700 | ||
1701 | if (p) { | |
1702 | ifindex = p->dev->ifindex; | |
1703 | vg = nbp_vlan_group(p); | |
1704 | net = dev_net(p->dev); | |
1705 | } else { | |
1706 | ifindex = br->dev->ifindex; | |
1707 | vg = br_vlan_group(br); | |
1708 | net = dev_net(br->dev); | |
1709 | } | |
1710 | ||
1711 | skb = nlmsg_new(rtnl_vlan_nlmsg_size(), GFP_KERNEL); | |
1712 | if (!skb) | |
1713 | goto out_err; | |
1714 | ||
1715 | err = -EMSGSIZE; | |
1716 | nlh = nlmsg_put(skb, 0, 0, cmd, sizeof(*bvm), 0); | |
1717 | if (!nlh) | |
1718 | goto out_err; | |
1719 | bvm = nlmsg_data(nlh); | |
1720 | memset(bvm, 0, sizeof(*bvm)); | |
1721 | bvm->family = AF_BRIDGE; | |
1722 | bvm->ifindex = ifindex; | |
1723 | ||
1724 | switch (cmd) { | |
1725 | case RTM_NEWVLAN: | |
1726 | /* need to find the vlan due to flags/options */ | |
1727 | v = br_vlan_find(vg, vid); | |
1728 | if (!v || !br_vlan_should_use(v)) | |
1729 | goto out_kfree; | |
1730 | ||
1731 | flags = v->flags; | |
1732 | if (br_get_pvid(vg) == v->vid) | |
1733 | flags |= BRIDGE_VLAN_INFO_PVID; | |
1734 | break; | |
1735 | case RTM_DELVLAN: | |
1736 | break; | |
1737 | default: | |
1738 | goto out_kfree; | |
1739 | } | |
1740 | ||
56d09976 | 1741 | if (!br_vlan_fill_vids(skb, vid, vid_range, v, flags, false)) |
cf5bddb9 NA |
1742 | goto out_err; |
1743 | ||
1744 | nlmsg_end(skb, nlh); | |
1745 | rtnl_notify(skb, net, 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL); | |
1746 | return; | |
1747 | ||
1748 | out_err: | |
1749 | rtnl_set_sk_err(net, RTNLGRP_BRVLAN, err); | |
1750 | out_kfree: | |
1751 | kfree_skb(skb); | |
1752 | } | |
1753 | ||
0ab55879 | 1754 | /* check if v_curr can enter a range ending in range_end */ |
a5d29ae2 NA |
1755 | bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, |
1756 | const struct net_bridge_vlan *range_end) | |
0ab55879 NA |
1757 | { |
1758 | return v_curr->vid - range_end->vid == 1 && | |
7a53e718 | 1759 | range_end->flags == v_curr->flags && |
99f7c5e0 | 1760 | br_vlan_opts_eq_range(v_curr, range_end); |
0ab55879 NA |
1761 | } |
1762 | ||
8dcea187 NA |
1763 | static int br_vlan_dump_dev(const struct net_device *dev, |
1764 | struct sk_buff *skb, | |
56d09976 NA |
1765 | struct netlink_callback *cb, |
1766 | u32 dump_flags) | |
8dcea187 | 1767 | { |
0ab55879 | 1768 | struct net_bridge_vlan *v, *range_start = NULL, *range_end = NULL; |
56d09976 | 1769 | bool dump_stats = !!(dump_flags & BRIDGE_VLANDB_DUMPF_STATS); |
8dcea187 NA |
1770 | struct net_bridge_vlan_group *vg; |
1771 | int idx = 0, s_idx = cb->args[1]; | |
1772 | struct nlmsghdr *nlh = NULL; | |
8dcea187 NA |
1773 | struct net_bridge_port *p; |
1774 | struct br_vlan_msg *bvm; | |
1775 | struct net_bridge *br; | |
1776 | int err = 0; | |
1777 | u16 pvid; | |
1778 | ||
1779 | if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) | |
1780 | return -EINVAL; | |
1781 | ||
1782 | if (netif_is_bridge_master(dev)) { | |
1783 | br = netdev_priv(dev); | |
1784 | vg = br_vlan_group_rcu(br); | |
1785 | p = NULL; | |
1786 | } else { | |
1787 | p = br_port_get_rcu(dev); | |
1788 | if (WARN_ON(!p)) | |
1789 | return -EINVAL; | |
1790 | vg = nbp_vlan_group_rcu(p); | |
1791 | br = p->br; | |
1792 | } | |
1793 | ||
1794 | if (!vg) | |
1795 | return 0; | |
1796 | ||
1797 | nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, | |
1798 | RTM_NEWVLAN, sizeof(*bvm), NLM_F_MULTI); | |
1799 | if (!nlh) | |
1800 | return -EMSGSIZE; | |
1801 | bvm = nlmsg_data(nlh); | |
1802 | memset(bvm, 0, sizeof(*bvm)); | |
1803 | bvm->family = PF_BRIDGE; | |
1804 | bvm->ifindex = dev->ifindex; | |
1805 | pvid = br_get_pvid(vg); | |
1806 | ||
0ab55879 | 1807 | /* idx must stay at range's beginning until it is filled in */ |
8dcea187 NA |
1808 | list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { |
1809 | if (!br_vlan_should_use(v)) | |
1810 | continue; | |
0ab55879 NA |
1811 | if (idx < s_idx) { |
1812 | idx++; | |
1813 | continue; | |
8dcea187 | 1814 | } |
0ab55879 NA |
1815 | |
1816 | if (!range_start) { | |
1817 | range_start = v; | |
1818 | range_end = v; | |
1819 | continue; | |
1820 | } | |
1821 | ||
56d09976 NA |
1822 | if (dump_stats || v->vid == pvid || |
1823 | !br_vlan_can_enter_range(v, range_end)) { | |
1824 | u16 vlan_flags = br_vlan_flags(range_start, pvid); | |
0ab55879 NA |
1825 | |
1826 | if (!br_vlan_fill_vids(skb, range_start->vid, | |
7a53e718 | 1827 | range_end->vid, range_start, |
56d09976 | 1828 | vlan_flags, dump_stats)) { |
0ab55879 NA |
1829 | err = -EMSGSIZE; |
1830 | break; | |
1831 | } | |
1832 | /* advance number of filled vlans */ | |
1833 | idx += range_end->vid - range_start->vid + 1; | |
1834 | ||
1835 | range_start = v; | |
1836 | } | |
1837 | range_end = v; | |
8dcea187 | 1838 | } |
0ab55879 NA |
1839 | |
1840 | /* err will be 0 and range_start will be set in 3 cases here: | |
1841 | * - first vlan (range_start == range_end) | |
1842 | * - last vlan (range_start == range_end, not in range) | |
1843 | * - last vlan range (range_start != range_end, in range) | |
1844 | */ | |
1845 | if (!err && range_start && | |
1846 | !br_vlan_fill_vids(skb, range_start->vid, range_end->vid, | |
56d09976 NA |
1847 | range_start, br_vlan_flags(range_start, pvid), |
1848 | dump_stats)) | |
0ab55879 NA |
1849 | err = -EMSGSIZE; |
1850 | ||
1851 | cb->args[1] = err ? idx : 0; | |
1852 | ||
8dcea187 NA |
1853 | nlmsg_end(skb, nlh); |
1854 | ||
1855 | return err; | |
1856 | } | |
1857 | ||
56d09976 NA |
1858 | static const struct nla_policy br_vlan_db_dump_pol[BRIDGE_VLANDB_DUMP_MAX + 1] = { |
1859 | [BRIDGE_VLANDB_DUMP_FLAGS] = { .type = NLA_U32 }, | |
1860 | }; | |
1861 | ||
8dcea187 NA |
1862 | static int br_vlan_rtm_dump(struct sk_buff *skb, struct netlink_callback *cb) |
1863 | { | |
56d09976 | 1864 | struct nlattr *dtb[BRIDGE_VLANDB_DUMP_MAX + 1]; |
8dcea187 NA |
1865 | int idx = 0, err = 0, s_idx = cb->args[0]; |
1866 | struct net *net = sock_net(skb->sk); | |
1867 | struct br_vlan_msg *bvm; | |
1868 | struct net_device *dev; | |
56d09976 | 1869 | u32 dump_flags = 0; |
8dcea187 | 1870 | |
56d09976 NA |
1871 | err = nlmsg_parse(cb->nlh, sizeof(*bvm), dtb, BRIDGE_VLANDB_DUMP_MAX, |
1872 | br_vlan_db_dump_pol, cb->extack); | |
8dcea187 NA |
1873 | if (err < 0) |
1874 | return err; | |
1875 | ||
1876 | bvm = nlmsg_data(cb->nlh); | |
56d09976 NA |
1877 | if (dtb[BRIDGE_VLANDB_DUMP_FLAGS]) |
1878 | dump_flags = nla_get_u32(dtb[BRIDGE_VLANDB_DUMP_FLAGS]); | |
8dcea187 NA |
1879 | |
1880 | rcu_read_lock(); | |
1881 | if (bvm->ifindex) { | |
1882 | dev = dev_get_by_index_rcu(net, bvm->ifindex); | |
1883 | if (!dev) { | |
1884 | err = -ENODEV; | |
1885 | goto out_err; | |
1886 | } | |
56d09976 | 1887 | err = br_vlan_dump_dev(dev, skb, cb, dump_flags); |
8dcea187 NA |
1888 | if (err && err != -EMSGSIZE) |
1889 | goto out_err; | |
1890 | } else { | |
1891 | for_each_netdev_rcu(net, dev) { | |
1892 | if (idx < s_idx) | |
1893 | goto skip; | |
1894 | ||
56d09976 | 1895 | err = br_vlan_dump_dev(dev, skb, cb, dump_flags); |
8dcea187 NA |
1896 | if (err == -EMSGSIZE) |
1897 | break; | |
1898 | skip: | |
1899 | idx++; | |
1900 | } | |
1901 | } | |
1902 | cb->args[0] = idx; | |
1903 | rcu_read_unlock(); | |
1904 | ||
1905 | return skb->len; | |
1906 | ||
1907 | out_err: | |
1908 | rcu_read_unlock(); | |
1909 | ||
1910 | return err; | |
1911 | } | |
1912 | ||
f26b2965 | 1913 | static const struct nla_policy br_vlan_db_policy[BRIDGE_VLANDB_ENTRY_MAX + 1] = { |
8140860c JB |
1914 | [BRIDGE_VLANDB_ENTRY_INFO] = |
1915 | NLA_POLICY_EXACT_LEN(sizeof(struct bridge_vlan_info)), | |
0ab55879 | 1916 | [BRIDGE_VLANDB_ENTRY_RANGE] = { .type = NLA_U16 }, |
a580c76d | 1917 | [BRIDGE_VLANDB_ENTRY_STATE] = { .type = NLA_U8 }, |
fa388f29 | 1918 | [BRIDGE_VLANDB_ENTRY_TUNNEL_INFO] = { .type = NLA_NESTED }, |
f26b2965 NA |
1919 | }; |
1920 | ||
1921 | static int br_vlan_rtm_process_one(struct net_device *dev, | |
1922 | const struct nlattr *attr, | |
1923 | int cmd, struct netlink_ext_ack *extack) | |
1924 | { | |
0ab55879 | 1925 | struct bridge_vlan_info *vinfo, vrange_end, *vinfo_last = NULL; |
f26b2965 | 1926 | struct nlattr *tb[BRIDGE_VLANDB_ENTRY_MAX + 1]; |
a5d29ae2 | 1927 | bool changed = false, skip_processing = false; |
f26b2965 NA |
1928 | struct net_bridge_vlan_group *vg; |
1929 | struct net_bridge_port *p = NULL; | |
1930 | int err = 0, cmdmap = 0; | |
1931 | struct net_bridge *br; | |
f26b2965 NA |
1932 | |
1933 | if (netif_is_bridge_master(dev)) { | |
1934 | br = netdev_priv(dev); | |
1935 | vg = br_vlan_group(br); | |
1936 | } else { | |
1937 | p = br_port_get_rtnl(dev); | |
1938 | if (WARN_ON(!p)) | |
1939 | return -ENODEV; | |
1940 | br = p->br; | |
1941 | vg = nbp_vlan_group(p); | |
1942 | } | |
1943 | ||
1944 | if (WARN_ON(!vg)) | |
1945 | return -ENODEV; | |
1946 | ||
1947 | err = nla_parse_nested(tb, BRIDGE_VLANDB_ENTRY_MAX, attr, | |
1948 | br_vlan_db_policy, extack); | |
1949 | if (err) | |
1950 | return err; | |
1951 | ||
1952 | if (!tb[BRIDGE_VLANDB_ENTRY_INFO]) { | |
1953 | NL_SET_ERR_MSG_MOD(extack, "Missing vlan entry info"); | |
1954 | return -EINVAL; | |
1955 | } | |
0ab55879 | 1956 | memset(&vrange_end, 0, sizeof(vrange_end)); |
f26b2965 NA |
1957 | |
1958 | vinfo = nla_data(tb[BRIDGE_VLANDB_ENTRY_INFO]); | |
1959 | if (vinfo->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | | |
1960 | BRIDGE_VLAN_INFO_RANGE_END)) { | |
1961 | NL_SET_ERR_MSG_MOD(extack, "Old-style vlan ranges are not allowed when using RTM vlan calls"); | |
1962 | return -EINVAL; | |
1963 | } | |
1964 | if (!br_vlan_valid_id(vinfo->vid, extack)) | |
1965 | return -EINVAL; | |
1966 | ||
0ab55879 NA |
1967 | if (tb[BRIDGE_VLANDB_ENTRY_RANGE]) { |
1968 | vrange_end.vid = nla_get_u16(tb[BRIDGE_VLANDB_ENTRY_RANGE]); | |
1969 | /* validate user-provided flags without RANGE_BEGIN */ | |
1970 | vrange_end.flags = BRIDGE_VLAN_INFO_RANGE_END | vinfo->flags; | |
1971 | vinfo->flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
1972 | ||
1973 | /* vinfo_last is the range start, vinfo the range end */ | |
1974 | vinfo_last = vinfo; | |
1975 | vinfo = &vrange_end; | |
1976 | ||
1977 | if (!br_vlan_valid_id(vinfo->vid, extack) || | |
1978 | !br_vlan_valid_range(vinfo, vinfo_last, extack)) | |
1979 | return -EINVAL; | |
1980 | } | |
1981 | ||
f26b2965 NA |
1982 | switch (cmd) { |
1983 | case RTM_NEWVLAN: | |
1984 | cmdmap = RTM_SETLINK; | |
a5d29ae2 | 1985 | skip_processing = !!(vinfo->flags & BRIDGE_VLAN_INFO_ONLY_OPTS); |
f26b2965 | 1986 | break; |
adb3ce9b NA |
1987 | case RTM_DELVLAN: |
1988 | cmdmap = RTM_DELLINK; | |
1989 | break; | |
f26b2965 NA |
1990 | } |
1991 | ||
a5d29ae2 NA |
1992 | if (!skip_processing) { |
1993 | struct bridge_vlan_info *tmp_last = vinfo_last; | |
1994 | ||
1995 | /* br_process_vlan_info may overwrite vinfo_last */ | |
1996 | err = br_process_vlan_info(br, p, cmdmap, vinfo, &tmp_last, | |
1997 | &changed, extack); | |
1998 | ||
1999 | /* notify first if anything changed */ | |
2000 | if (changed) | |
2001 | br_ifinfo_notify(cmdmap, br, p); | |
2002 | ||
2003 | if (err) | |
2004 | return err; | |
2005 | } | |
2006 | ||
2007 | /* deal with options */ | |
2008 | if (cmd == RTM_NEWVLAN) { | |
2009 | struct net_bridge_vlan *range_start, *range_end; | |
2010 | ||
2011 | if (vinfo_last) { | |
2012 | range_start = br_vlan_find(vg, vinfo_last->vid); | |
2013 | range_end = br_vlan_find(vg, vinfo->vid); | |
2014 | } else { | |
2015 | range_start = br_vlan_find(vg, vinfo->vid); | |
2016 | range_end = range_start; | |
2017 | } | |
2018 | ||
2019 | err = br_vlan_process_options(br, p, range_start, range_end, | |
2020 | tb, extack); | |
2021 | } | |
f26b2965 NA |
2022 | |
2023 | return err; | |
2024 | } | |
2025 | ||
2026 | static int br_vlan_rtm_process(struct sk_buff *skb, struct nlmsghdr *nlh, | |
2027 | struct netlink_ext_ack *extack) | |
2028 | { | |
2029 | struct net *net = sock_net(skb->sk); | |
2030 | struct br_vlan_msg *bvm; | |
2031 | struct net_device *dev; | |
2032 | struct nlattr *attr; | |
2033 | int err, vlans = 0; | |
2034 | int rem; | |
2035 | ||
2036 | /* this should validate the header and check for remaining bytes */ | |
2037 | err = nlmsg_parse(nlh, sizeof(*bvm), NULL, BRIDGE_VLANDB_MAX, NULL, | |
2038 | extack); | |
2039 | if (err < 0) | |
2040 | return err; | |
2041 | ||
2042 | bvm = nlmsg_data(nlh); | |
2043 | dev = __dev_get_by_index(net, bvm->ifindex); | |
2044 | if (!dev) | |
2045 | return -ENODEV; | |
2046 | ||
2047 | if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) { | |
2048 | NL_SET_ERR_MSG_MOD(extack, "The device is not a valid bridge or bridge port"); | |
2049 | return -EINVAL; | |
2050 | } | |
2051 | ||
2052 | nlmsg_for_each_attr(attr, nlh, sizeof(*bvm), rem) { | |
2053 | if (nla_type(attr) != BRIDGE_VLANDB_ENTRY) | |
2054 | continue; | |
2055 | ||
2056 | vlans++; | |
2057 | err = br_vlan_rtm_process_one(dev, attr, nlh->nlmsg_type, | |
2058 | extack); | |
2059 | if (err) | |
2060 | break; | |
2061 | } | |
2062 | if (!vlans) { | |
2063 | NL_SET_ERR_MSG_MOD(extack, "No vlans found to process"); | |
2064 | err = -EINVAL; | |
2065 | } | |
2066 | ||
2067 | return err; | |
2068 | } | |
2069 | ||
8dcea187 NA |
2070 | void br_vlan_rtnl_init(void) |
2071 | { | |
2072 | rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_GETVLAN, NULL, | |
2073 | br_vlan_rtm_dump, 0); | |
f26b2965 NA |
2074 | rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_NEWVLAN, |
2075 | br_vlan_rtm_process, NULL, 0); | |
adb3ce9b NA |
2076 | rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_DELVLAN, |
2077 | br_vlan_rtm_process, NULL, 0); | |
8dcea187 NA |
2078 | } |
2079 | ||
2080 | void br_vlan_rtnl_uninit(void) | |
2081 | { | |
2082 | rtnl_unregister(PF_BRIDGE, RTM_GETVLAN); | |
f26b2965 | 2083 | rtnl_unregister(PF_BRIDGE, RTM_NEWVLAN); |
adb3ce9b | 2084 | rtnl_unregister(PF_BRIDGE, RTM_DELVLAN); |
8dcea187 | 2085 | } |