Commit | Line | Data |
---|---|---|
243a2e63 VY |
1 | #include <linux/kernel.h> |
2 | #include <linux/netdevice.h> | |
3 | #include <linux/rtnetlink.h> | |
4 | #include <linux/slab.h> | |
7f109539 | 5 | #include <net/switchdev.h> |
243a2e63 VY |
6 | |
7 | #include "br_private.h" | |
8 | ||
2594e906 NA |
9 | static inline int br_vlan_cmp(struct rhashtable_compare_arg *arg, |
10 | const void *ptr) | |
552406c4 | 11 | { |
2594e906 NA |
12 | const struct net_bridge_vlan *vle = ptr; |
13 | u16 vid = *(u16 *)arg->key; | |
14 | ||
15 | return vle->vid != vid; | |
16 | } | |
17 | ||
18 | static const struct rhashtable_params br_vlan_rht_params = { | |
19 | .head_offset = offsetof(struct net_bridge_vlan, vnode), | |
20 | .key_offset = offsetof(struct net_bridge_vlan, vid), | |
21 | .key_len = sizeof(u16), | |
8af78b64 NA |
22 | .nelem_hint = 3, |
23 | .locks_mul = 1, | |
2594e906 NA |
24 | .max_size = VLAN_N_VID, |
25 | .obj_cmpfn = br_vlan_cmp, | |
26 | .automatic_shrinking = true, | |
27 | }; | |
28 | ||
29 | static struct net_bridge_vlan *br_vlan_lookup(struct rhashtable *tbl, u16 vid) | |
30 | { | |
31 | return rhashtable_lookup_fast(tbl, &vid, br_vlan_rht_params); | |
32 | } | |
33 | ||
77751ee8 | 34 | static void __vlan_add_pvid(struct net_bridge_vlan_group *vg, u16 vid) |
2594e906 | 35 | { |
77751ee8 | 36 | if (vg->pvid == vid) |
552406c4 VY |
37 | return; |
38 | ||
39 | smp_wmb(); | |
77751ee8 | 40 | vg->pvid = vid; |
552406c4 VY |
41 | } |
42 | ||
77751ee8 | 43 | static void __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid) |
552406c4 | 44 | { |
77751ee8 | 45 | if (vg->pvid != vid) |
552406c4 VY |
46 | return; |
47 | ||
48 | smp_wmb(); | |
77751ee8 | 49 | vg->pvid = 0; |
552406c4 VY |
50 | } |
51 | ||
2594e906 | 52 | static void __vlan_add_flags(struct net_bridge_vlan *v, u16 flags) |
35e03f3a | 53 | { |
77751ee8 NA |
54 | struct net_bridge_vlan_group *vg; |
55 | ||
56 | if (br_vlan_is_master(v)) | |
907b1e6e | 57 | vg = br_vlan_group(v->br); |
77751ee8 | 58 | else |
907b1e6e | 59 | vg = nbp_vlan_group(v->port); |
77751ee8 NA |
60 | |
61 | if (flags & BRIDGE_VLAN_INFO_PVID) | |
62 | __vlan_add_pvid(vg, v->vid); | |
63 | else | |
64 | __vlan_delete_pvid(vg, v->vid); | |
35e03f3a VY |
65 | |
66 | if (flags & BRIDGE_VLAN_INFO_UNTAGGED) | |
2594e906 | 67 | v->flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
635126b7 | 68 | else |
2594e906 | 69 | v->flags &= ~BRIDGE_VLAN_INFO_UNTAGGED; |
35e03f3a VY |
70 | } |
71 | ||
7f109539 SF |
72 | static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br, |
73 | u16 vid, u16 flags) | |
74 | { | |
0944d6b5 | 75 | struct switchdev_obj_port_vlan v = { |
6ff64f6f | 76 | .obj.orig_dev = dev, |
0944d6b5 JP |
77 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
78 | .flags = flags, | |
79 | .vid_begin = vid, | |
80 | .vid_end = vid, | |
81 | }; | |
7f109539 SF |
82 | int err; |
83 | ||
0944d6b5 JP |
84 | /* Try switchdev op first. In case it is not supported, fallback to |
85 | * 8021q add. | |
7f109539 | 86 | */ |
0944d6b5 JP |
87 | err = switchdev_port_obj_add(dev, &v.obj); |
88 | if (err == -EOPNOTSUPP) | |
89 | return vlan_vid_add(dev, br->vlan_proto, vid); | |
7f109539 SF |
90 | return err; |
91 | } | |
92 | ||
2594e906 | 93 | static void __vlan_add_list(struct net_bridge_vlan *v) |
243a2e63 | 94 | { |
907b1e6e | 95 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
96 | struct list_head *headp, *hpos; |
97 | struct net_bridge_vlan *vent; | |
bc9a25d2 | 98 | |
907b1e6e NA |
99 | if (br_vlan_is_master(v)) |
100 | vg = br_vlan_group(v->br); | |
101 | else | |
102 | vg = nbp_vlan_group(v->port); | |
103 | ||
104 | headp = &vg->vlan_list; | |
2594e906 NA |
105 | list_for_each_prev(hpos, headp) { |
106 | vent = list_entry(hpos, struct net_bridge_vlan, vlist); | |
107 | if (v->vid < vent->vid) | |
108 | continue; | |
109 | else | |
110 | break; | |
243a2e63 | 111 | } |
586c2b57 | 112 | list_add_rcu(&v->vlist, hpos); |
2594e906 | 113 | } |
243a2e63 | 114 | |
2594e906 NA |
115 | static void __vlan_del_list(struct net_bridge_vlan *v) |
116 | { | |
586c2b57 | 117 | list_del_rcu(&v->vlist); |
243a2e63 VY |
118 | } |
119 | ||
bf361ad3 VD |
120 | static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br, |
121 | u16 vid) | |
7f109539 | 122 | { |
0944d6b5 | 123 | struct switchdev_obj_port_vlan v = { |
6ff64f6f | 124 | .obj.orig_dev = dev, |
0944d6b5 JP |
125 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
126 | .vid_begin = vid, | |
127 | .vid_end = vid, | |
128 | }; | |
129 | int err; | |
7f109539 | 130 | |
0944d6b5 JP |
131 | /* Try switchdev op first. In case it is not supported, fallback to |
132 | * 8021q del. | |
7f109539 | 133 | */ |
0944d6b5 JP |
134 | err = switchdev_port_obj_del(dev, &v.obj); |
135 | if (err == -EOPNOTSUPP) { | |
7f109539 | 136 | vlan_vid_del(dev, br->vlan_proto, vid); |
0944d6b5 | 137 | return 0; |
7f109539 | 138 | } |
bf361ad3 | 139 | return err; |
7f109539 SF |
140 | } |
141 | ||
f8ed289f NA |
142 | /* Returns a master vlan, if it didn't exist it gets created. In all cases a |
143 | * a reference is taken to the master vlan before returning. | |
144 | */ | |
145 | static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid) | |
146 | { | |
907b1e6e | 147 | struct net_bridge_vlan_group *vg; |
f8ed289f NA |
148 | struct net_bridge_vlan *masterv; |
149 | ||
907b1e6e NA |
150 | vg = br_vlan_group(br); |
151 | masterv = br_vlan_find(vg, vid); | |
f8ed289f NA |
152 | if (!masterv) { |
153 | /* missing global ctx, create it now */ | |
154 | if (br_vlan_add(br, vid, 0)) | |
155 | return NULL; | |
907b1e6e | 156 | masterv = br_vlan_find(vg, vid); |
f8ed289f NA |
157 | if (WARN_ON(!masterv)) |
158 | return NULL; | |
159 | } | |
160 | atomic_inc(&masterv->refcnt); | |
161 | ||
162 | return masterv; | |
163 | } | |
164 | ||
6dada9b1 NA |
165 | static void br_master_vlan_rcu_free(struct rcu_head *rcu) |
166 | { | |
167 | struct net_bridge_vlan *v; | |
168 | ||
169 | v = container_of(rcu, struct net_bridge_vlan, rcu); | |
170 | WARN_ON(!br_vlan_is_master(v)); | |
171 | free_percpu(v->stats); | |
172 | v->stats = NULL; | |
173 | kfree(v); | |
174 | } | |
175 | ||
f8ed289f NA |
176 | static void br_vlan_put_master(struct net_bridge_vlan *masterv) |
177 | { | |
907b1e6e NA |
178 | struct net_bridge_vlan_group *vg; |
179 | ||
f8ed289f NA |
180 | if (!br_vlan_is_master(masterv)) |
181 | return; | |
182 | ||
907b1e6e | 183 | vg = br_vlan_group(masterv->br); |
f8ed289f | 184 | if (atomic_dec_and_test(&masterv->refcnt)) { |
907b1e6e | 185 | rhashtable_remove_fast(&vg->vlan_hash, |
f8ed289f NA |
186 | &masterv->vnode, br_vlan_rht_params); |
187 | __vlan_del_list(masterv); | |
6dada9b1 | 188 | call_rcu(&masterv->rcu, br_master_vlan_rcu_free); |
f8ed289f NA |
189 | } |
190 | } | |
191 | ||
2594e906 NA |
192 | /* This is the shared VLAN add function which works for both ports and bridge |
193 | * devices. There are four possible calls to this function in terms of the | |
194 | * vlan entry type: | |
195 | * 1. vlan is being added on a port (no master flags, global entry exists) | |
ddd611d3 | 196 | * 2. vlan is being added on a bridge (both master and brentry flags) |
2594e906 | 197 | * 3. vlan is being added on a port, but a global entry didn't exist which |
ddd611d3 | 198 | * is being created right now (master flag set, brentry flag unset), the |
2594e906 | 199 | * global entry is used for global per-vlan features, but not for filtering |
ddd611d3 | 200 | * 4. same as 3 but with both master and brentry flags set so the entry |
2594e906 NA |
201 | * will be used for filtering in both the port and the bridge |
202 | */ | |
203 | static int __vlan_add(struct net_bridge_vlan *v, u16 flags) | |
243a2e63 | 204 | { |
2594e906 NA |
205 | struct net_bridge_vlan *masterv = NULL; |
206 | struct net_bridge_port *p = NULL; | |
6be144f6 | 207 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
208 | struct net_device *dev; |
209 | struct net_bridge *br; | |
210 | int err; | |
211 | ||
212 | if (br_vlan_is_master(v)) { | |
213 | br = v->br; | |
214 | dev = br->dev; | |
907b1e6e | 215 | vg = br_vlan_group(br); |
2594e906 NA |
216 | } else { |
217 | p = v->port; | |
218 | br = p->br; | |
219 | dev = p->dev; | |
907b1e6e | 220 | vg = nbp_vlan_group(p); |
2594e906 NA |
221 | } |
222 | ||
223 | if (p) { | |
2594e906 NA |
224 | /* Add VLAN to the device filter if it is supported. |
225 | * This ensures tagged traffic enters the bridge when | |
226 | * promiscuous mode is disabled by br_manage_promisc(). | |
227 | */ | |
228 | err = __vlan_vid_add(dev, br, v->vid, flags); | |
229 | if (err) | |
230 | goto out; | |
231 | ||
232 | /* need to work on the master vlan too */ | |
233 | if (flags & BRIDGE_VLAN_INFO_MASTER) { | |
2ffdf508 NA |
234 | err = br_vlan_add(br, v->vid, flags | |
235 | BRIDGE_VLAN_INFO_BRENTRY); | |
2594e906 NA |
236 | if (err) |
237 | goto out_filt; | |
238 | } | |
239 | ||
f8ed289f NA |
240 | masterv = br_vlan_get_master(br, v->vid); |
241 | if (!masterv) | |
242 | goto out_filt; | |
2594e906 | 243 | v->brvlan = masterv; |
6dada9b1 | 244 | v->stats = masterv->stats; |
2594e906 NA |
245 | } |
246 | ||
6be144f6 | 247 | /* Add the dev mac and count the vlan only if it's usable */ |
2594e906 NA |
248 | if (br_vlan_should_use(v)) { |
249 | err = br_fdb_insert(br, p, dev->dev_addr, v->vid); | |
250 | if (err) { | |
251 | br_err(br, "failed insert local address into bridge forwarding table\n"); | |
252 | goto out_filt; | |
253 | } | |
6be144f6 | 254 | vg->num_vlans++; |
2594e906 NA |
255 | } |
256 | ||
6be144f6 NA |
257 | err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode, |
258 | br_vlan_rht_params); | |
2594e906 NA |
259 | if (err) |
260 | goto out_fdb_insert; | |
243a2e63 | 261 | |
2594e906 NA |
262 | __vlan_add_list(v); |
263 | __vlan_add_flags(v, flags); | |
2594e906 NA |
264 | out: |
265 | return err; | |
266 | ||
267 | out_fdb_insert: | |
6be144f6 NA |
268 | if (br_vlan_should_use(v)) { |
269 | br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid); | |
270 | vg->num_vlans--; | |
271 | } | |
2594e906 NA |
272 | |
273 | out_filt: | |
274 | if (p) { | |
275 | __vlan_vid_del(dev, br, v->vid); | |
276 | if (masterv) { | |
f8ed289f | 277 | br_vlan_put_master(masterv); |
2594e906 NA |
278 | v->brvlan = NULL; |
279 | } | |
280 | } | |
281 | ||
282 | goto out; | |
283 | } | |
284 | ||
285 | static int __vlan_del(struct net_bridge_vlan *v) | |
286 | { | |
287 | struct net_bridge_vlan *masterv = v; | |
77751ee8 | 288 | struct net_bridge_vlan_group *vg; |
2594e906 | 289 | struct net_bridge_port *p = NULL; |
2594e906 | 290 | int err = 0; |
552406c4 | 291 | |
2594e906 | 292 | if (br_vlan_is_master(v)) { |
907b1e6e | 293 | vg = br_vlan_group(v->br); |
2594e906 NA |
294 | } else { |
295 | p = v->port; | |
907b1e6e | 296 | vg = nbp_vlan_group(v->port); |
2594e906 | 297 | masterv = v->brvlan; |
2594e906 | 298 | } |
bf361ad3 | 299 | |
77751ee8 | 300 | __vlan_delete_pvid(vg, v->vid); |
2594e906 NA |
301 | if (p) { |
302 | err = __vlan_vid_del(p->dev, p->br, v->vid); | |
bf361ad3 | 303 | if (err) |
2594e906 | 304 | goto out; |
8580e211 | 305 | } |
243a2e63 | 306 | |
6be144f6 NA |
307 | if (br_vlan_should_use(v)) { |
308 | v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY; | |
309 | vg->num_vlans--; | |
2594e906 NA |
310 | } |
311 | ||
312 | if (masterv != v) { | |
77751ee8 NA |
313 | rhashtable_remove_fast(&vg->vlan_hash, &v->vnode, |
314 | br_vlan_rht_params); | |
2594e906 | 315 | __vlan_del_list(v); |
243a2e63 VY |
316 | kfree_rcu(v, rcu); |
317 | } | |
2594e906 | 318 | |
f8ed289f | 319 | br_vlan_put_master(masterv); |
2594e906 NA |
320 | out: |
321 | return err; | |
243a2e63 VY |
322 | } |
323 | ||
f409d0ed NA |
324 | static void __vlan_group_free(struct net_bridge_vlan_group *vg) |
325 | { | |
326 | WARN_ON(!list_empty(&vg->vlan_list)); | |
327 | rhashtable_destroy(&vg->vlan_hash); | |
328 | kfree(vg); | |
329 | } | |
330 | ||
331 | static void __vlan_flush(struct net_bridge_vlan_group *vg) | |
243a2e63 | 332 | { |
2594e906 NA |
333 | struct net_bridge_vlan *vlan, *tmp; |
334 | ||
f409d0ed NA |
335 | __vlan_delete_pvid(vg, vg->pvid); |
336 | list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist) | |
2594e906 | 337 | __vlan_del(vlan); |
243a2e63 VY |
338 | } |
339 | ||
78851988 | 340 | struct sk_buff *br_handle_vlan(struct net_bridge *br, |
2594e906 | 341 | struct net_bridge_vlan_group *vg, |
78851988 | 342 | struct sk_buff *skb) |
a37b85c9 | 343 | { |
6dada9b1 | 344 | struct br_vlan_stats *stats; |
2594e906 | 345 | struct net_bridge_vlan *v; |
a37b85c9 VY |
346 | u16 vid; |
347 | ||
20adfa1a VY |
348 | /* If this packet was not filtered at input, let it pass */ |
349 | if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) | |
78851988 VY |
350 | goto out; |
351 | ||
2594e906 NA |
352 | /* At this point, we know that the frame was filtered and contains |
353 | * a valid vlan id. If the vlan id has untagged flag set, | |
354 | * send untagged; otherwise, send tagged. | |
355 | */ | |
356 | br_vlan_get_tag(skb, &vid); | |
357 | v = br_vlan_find(vg, vid); | |
358 | /* Vlan entry must be configured at this point. The | |
fc92f745 VY |
359 | * only exception is the bridge is set in promisc mode and the |
360 | * packet is destined for the bridge device. In this case | |
361 | * pass the packet as is. | |
362 | */ | |
2594e906 | 363 | if (!v || !br_vlan_should_use(v)) { |
fc92f745 VY |
364 | if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) { |
365 | goto out; | |
366 | } else { | |
367 | kfree_skb(skb); | |
368 | return NULL; | |
369 | } | |
370 | } | |
6dada9b1 NA |
371 | if (br->vlan_stats_enabled) { |
372 | stats = this_cpu_ptr(v->stats); | |
373 | u64_stats_update_begin(&stats->syncp); | |
374 | stats->tx_bytes += skb->len; | |
375 | stats->tx_packets++; | |
376 | u64_stats_update_end(&stats->syncp); | |
377 | } | |
378 | ||
2594e906 | 379 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
99b192da | 380 | skb->vlan_tci = 0; |
78851988 VY |
381 | out: |
382 | return skb; | |
383 | } | |
384 | ||
385 | /* Called under RCU */ | |
6dada9b1 NA |
386 | static bool __allowed_ingress(const struct net_bridge *br, |
387 | struct net_bridge_vlan_group *vg, | |
2594e906 | 388 | struct sk_buff *skb, u16 *vid) |
78851988 | 389 | { |
6dada9b1 NA |
390 | struct br_vlan_stats *stats; |
391 | struct net_bridge_vlan *v; | |
8580e211 | 392 | bool tagged; |
a37b85c9 | 393 | |
20adfa1a | 394 | BR_INPUT_SKB_CB(skb)->vlan_filtered = true; |
12464bb8 TM |
395 | /* If vlan tx offload is disabled on bridge device and frame was |
396 | * sent from vlan device on the bridge device, it does not have | |
397 | * HW accelerated vlan tag. | |
398 | */ | |
df8a39de | 399 | if (unlikely(!skb_vlan_tag_present(skb) && |
6dada9b1 | 400 | skb->protocol == br->vlan_proto)) { |
0d5501c1 | 401 | skb = skb_vlan_untag(skb); |
12464bb8 TM |
402 | if (unlikely(!skb)) |
403 | return false; | |
404 | } | |
405 | ||
8580e211 TM |
406 | if (!br_vlan_get_tag(skb, vid)) { |
407 | /* Tagged frame */ | |
6dada9b1 | 408 | if (skb->vlan_proto != br->vlan_proto) { |
8580e211 TM |
409 | /* Protocol-mismatch, empty out vlan_tci for new tag */ |
410 | skb_push(skb, ETH_HLEN); | |
62749e2c | 411 | skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto, |
df8a39de | 412 | skb_vlan_tag_get(skb)); |
8580e211 TM |
413 | if (unlikely(!skb)) |
414 | return false; | |
415 | ||
416 | skb_pull(skb, ETH_HLEN); | |
417 | skb_reset_mac_len(skb); | |
418 | *vid = 0; | |
419 | tagged = false; | |
420 | } else { | |
421 | tagged = true; | |
422 | } | |
423 | } else { | |
424 | /* Untagged frame */ | |
425 | tagged = false; | |
426 | } | |
427 | ||
b90356ce | 428 | if (!*vid) { |
77751ee8 NA |
429 | u16 pvid = br_get_pvid(vg); |
430 | ||
b90356ce TM |
431 | /* Frame had a tag with VID 0 or did not have a tag. |
432 | * See if pvid is set on this port. That tells us which | |
433 | * vlan untagged or priority-tagged traffic belongs to. | |
78851988 | 434 | */ |
3df6bf45 | 435 | if (!pvid) |
eb707618 | 436 | goto drop; |
78851988 | 437 | |
b90356ce TM |
438 | /* PVID is set on this port. Any untagged or priority-tagged |
439 | * ingress frame is considered to belong to this vlan. | |
78851988 | 440 | */ |
dfb5fa32 | 441 | *vid = pvid; |
8580e211 | 442 | if (likely(!tagged)) |
b90356ce | 443 | /* Untagged Frame. */ |
6dada9b1 | 444 | __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid); |
b90356ce TM |
445 | else |
446 | /* Priority-tagged Frame. | |
447 | * At this point, We know that skb->vlan_tci had | |
448 | * VLAN_TAG_PRESENT bit and its VID field was 0x000. | |
449 | * We update only VID field and preserve PCP field. | |
450 | */ | |
451 | skb->vlan_tci |= pvid; | |
452 | ||
6dada9b1 NA |
453 | /* if stats are disabled we can avoid the lookup */ |
454 | if (!br->vlan_stats_enabled) | |
455 | return true; | |
78851988 | 456 | } |
77751ee8 | 457 | v = br_vlan_find(vg, *vid); |
6dada9b1 NA |
458 | if (!v || !br_vlan_should_use(v)) |
459 | goto drop; | |
460 | ||
461 | if (br->vlan_stats_enabled) { | |
462 | stats = this_cpu_ptr(v->stats); | |
463 | u64_stats_update_begin(&stats->syncp); | |
464 | stats->rx_bytes += skb->len; | |
465 | stats->rx_packets++; | |
466 | u64_stats_update_end(&stats->syncp); | |
467 | } | |
468 | ||
469 | return true; | |
470 | ||
eb707618 TM |
471 | drop: |
472 | kfree_skb(skb); | |
a37b85c9 VY |
473 | return false; |
474 | } | |
475 | ||
77751ee8 NA |
476 | bool br_allowed_ingress(const struct net_bridge *br, |
477 | struct net_bridge_vlan_group *vg, struct sk_buff *skb, | |
478 | u16 *vid) | |
2594e906 NA |
479 | { |
480 | /* If VLAN filtering is disabled on the bridge, all packets are | |
481 | * permitted. | |
482 | */ | |
483 | if (!br->vlan_enabled) { | |
484 | BR_INPUT_SKB_CB(skb)->vlan_filtered = false; | |
485 | return true; | |
486 | } | |
487 | ||
6dada9b1 | 488 | return __allowed_ingress(br, vg, skb, vid); |
2594e906 NA |
489 | } |
490 | ||
85f46c6b | 491 | /* Called under RCU. */ |
2594e906 | 492 | bool br_allowed_egress(struct net_bridge_vlan_group *vg, |
85f46c6b VY |
493 | const struct sk_buff *skb) |
494 | { | |
2594e906 | 495 | const struct net_bridge_vlan *v; |
85f46c6b VY |
496 | u16 vid; |
497 | ||
20adfa1a VY |
498 | /* If this packet was not filtered at input, let it pass */ |
499 | if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) | |
85f46c6b VY |
500 | return true; |
501 | ||
85f46c6b | 502 | br_vlan_get_tag(skb, &vid); |
2594e906 NA |
503 | v = br_vlan_find(vg, vid); |
504 | if (v && br_vlan_should_use(v)) | |
85f46c6b VY |
505 | return true; |
506 | ||
507 | return false; | |
508 | } | |
509 | ||
e0d7968a TM |
510 | /* Called under RCU */ |
511 | bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) | |
512 | { | |
468e7944 | 513 | struct net_bridge_vlan_group *vg; |
e0d7968a | 514 | struct net_bridge *br = p->br; |
e0d7968a | 515 | |
20adfa1a | 516 | /* If filtering was disabled at input, let it pass. */ |
c095f248 | 517 | if (!br->vlan_enabled) |
e0d7968a TM |
518 | return true; |
519 | ||
eca1e006 | 520 | vg = nbp_vlan_group_rcu(p); |
468e7944 | 521 | if (!vg || !vg->num_vlans) |
e0d7968a TM |
522 | return false; |
523 | ||
8580e211 TM |
524 | if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto) |
525 | *vid = 0; | |
526 | ||
e0d7968a | 527 | if (!*vid) { |
77751ee8 | 528 | *vid = br_get_pvid(vg); |
3df6bf45 | 529 | if (!*vid) |
e0d7968a TM |
530 | return false; |
531 | ||
532 | return true; | |
533 | } | |
534 | ||
77751ee8 | 535 | if (br_vlan_find(vg, *vid)) |
e0d7968a TM |
536 | return true; |
537 | ||
538 | return false; | |
539 | } | |
540 | ||
8adff41c TM |
541 | /* Must be protected by RTNL. |
542 | * Must be called with vid in range from 1 to 4094 inclusive. | |
543 | */ | |
552406c4 | 544 | int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 | 545 | { |
907b1e6e | 546 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
547 | struct net_bridge_vlan *vlan; |
548 | int ret; | |
243a2e63 VY |
549 | |
550 | ASSERT_RTNL(); | |
551 | ||
907b1e6e NA |
552 | vg = br_vlan_group(br); |
553 | vlan = br_vlan_find(vg, vid); | |
2594e906 NA |
554 | if (vlan) { |
555 | if (!br_vlan_is_brentry(vlan)) { | |
556 | /* Trying to change flags of non-existent bridge vlan */ | |
557 | if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) | |
558 | return -EINVAL; | |
559 | /* It was only kept for port vlans, now make it real */ | |
560 | ret = br_fdb_insert(br, NULL, br->dev->dev_addr, | |
561 | vlan->vid); | |
562 | if (ret) { | |
563 | br_err(br, "failed insert local address into bridge forwarding table\n"); | |
564 | return ret; | |
565 | } | |
566 | atomic_inc(&vlan->refcnt); | |
567 | vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY; | |
907b1e6e | 568 | vg->num_vlans++; |
2594e906 NA |
569 | } |
570 | __vlan_add_flags(vlan, flags); | |
571 | return 0; | |
572 | } | |
243a2e63 | 573 | |
2594e906 NA |
574 | vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); |
575 | if (!vlan) | |
243a2e63 VY |
576 | return -ENOMEM; |
577 | ||
6dada9b1 NA |
578 | vlan->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats); |
579 | if (!vlan->stats) { | |
580 | kfree(vlan); | |
581 | return -ENOMEM; | |
582 | } | |
2594e906 NA |
583 | vlan->vid = vid; |
584 | vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER; | |
585 | vlan->flags &= ~BRIDGE_VLAN_INFO_PVID; | |
586 | vlan->br = br; | |
587 | if (flags & BRIDGE_VLAN_INFO_BRENTRY) | |
588 | atomic_set(&vlan->refcnt, 1); | |
589 | ret = __vlan_add(vlan, flags); | |
6dada9b1 NA |
590 | if (ret) { |
591 | free_percpu(vlan->stats); | |
2594e906 | 592 | kfree(vlan); |
6dada9b1 | 593 | } |
243a2e63 | 594 | |
2594e906 | 595 | return ret; |
243a2e63 VY |
596 | } |
597 | ||
8adff41c TM |
598 | /* Must be protected by RTNL. |
599 | * Must be called with vid in range from 1 to 4094 inclusive. | |
600 | */ | |
243a2e63 VY |
601 | int br_vlan_delete(struct net_bridge *br, u16 vid) |
602 | { | |
907b1e6e | 603 | struct net_bridge_vlan_group *vg; |
2594e906 | 604 | struct net_bridge_vlan *v; |
243a2e63 VY |
605 | |
606 | ASSERT_RTNL(); | |
607 | ||
907b1e6e NA |
608 | vg = br_vlan_group(br); |
609 | v = br_vlan_find(vg, vid); | |
2594e906 NA |
610 | if (!v || !br_vlan_is_brentry(v)) |
611 | return -ENOENT; | |
243a2e63 | 612 | |
424bb9c9 | 613 | br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); |
3741873b | 614 | br_fdb_delete_by_port(br, NULL, vid, 0); |
bc9a25d2 | 615 | |
2594e906 | 616 | return __vlan_del(v); |
243a2e63 VY |
617 | } |
618 | ||
619 | void br_vlan_flush(struct net_bridge *br) | |
620 | { | |
f409d0ed NA |
621 | struct net_bridge_vlan_group *vg; |
622 | ||
243a2e63 | 623 | ASSERT_RTNL(); |
243a2e63 | 624 | |
f409d0ed NA |
625 | vg = br_vlan_group(br); |
626 | __vlan_flush(vg); | |
627 | RCU_INIT_POINTER(br->vlgrp, NULL); | |
628 | synchronize_rcu(); | |
629 | __vlan_group_free(vg); | |
243a2e63 VY |
630 | } |
631 | ||
2594e906 | 632 | struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid) |
2b292fb4 | 633 | { |
2594e906 NA |
634 | if (!vg) |
635 | return NULL; | |
2b292fb4 | 636 | |
2594e906 | 637 | return br_vlan_lookup(&vg->vlan_hash, vid); |
2b292fb4 TM |
638 | } |
639 | ||
204177f3 TM |
640 | /* Must be protected by RTNL. */ |
641 | static void recalculate_group_addr(struct net_bridge *br) | |
642 | { | |
643 | if (br->group_addr_set) | |
644 | return; | |
645 | ||
646 | spin_lock_bh(&br->lock); | |
647 | if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) { | |
648 | /* Bridge Group Address */ | |
649 | br->group_addr[5] = 0x00; | |
650 | } else { /* vlan_enabled && ETH_P_8021AD */ | |
651 | /* Provider Bridge Group Address */ | |
652 | br->group_addr[5] = 0x08; | |
653 | } | |
654 | spin_unlock_bh(&br->lock); | |
655 | } | |
656 | ||
657 | /* Must be protected by RTNL. */ | |
658 | void br_recalculate_fwd_mask(struct net_bridge *br) | |
659 | { | |
660 | if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) | |
661 | br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; | |
662 | else /* vlan_enabled && ETH_P_8021AD */ | |
663 | br->group_fwd_mask_required = BR_GROUPFWD_8021AD & | |
664 | ~(1u << br->group_addr[5]); | |
665 | } | |
666 | ||
a7854037 | 667 | int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) |
243a2e63 | 668 | { |
6b72a770 ER |
669 | struct switchdev_attr attr = { |
670 | .orig_dev = br->dev, | |
671 | .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, | |
672 | .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, | |
673 | .u.vlan_filtering = val, | |
674 | }; | |
675 | int err; | |
676 | ||
243a2e63 | 677 | if (br->vlan_enabled == val) |
a7854037 | 678 | return 0; |
243a2e63 | 679 | |
6b72a770 ER |
680 | err = switchdev_port_attr_set(br->dev, &attr); |
681 | if (err && err != -EOPNOTSUPP) | |
682 | return err; | |
683 | ||
243a2e63 | 684 | br->vlan_enabled = val; |
2796d0c6 | 685 | br_manage_promisc(br); |
204177f3 TM |
686 | recalculate_group_addr(br); |
687 | br_recalculate_fwd_mask(br); | |
243a2e63 | 688 | |
a7854037 NA |
689 | return 0; |
690 | } | |
691 | ||
692 | int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) | |
693 | { | |
047831a9 | 694 | return __br_vlan_filter_toggle(br, val); |
243a2e63 VY |
695 | } |
696 | ||
d2d427b3 | 697 | int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) |
204177f3 TM |
698 | { |
699 | int err = 0; | |
700 | struct net_bridge_port *p; | |
2594e906 | 701 | struct net_bridge_vlan *vlan; |
907b1e6e | 702 | struct net_bridge_vlan_group *vg; |
d2d427b3 | 703 | __be16 oldproto; |
204177f3 | 704 | |
204177f3 | 705 | if (br->vlan_proto == proto) |
d2d427b3 | 706 | return 0; |
204177f3 TM |
707 | |
708 | /* Add VLANs for the new proto to the device filter. */ | |
709 | list_for_each_entry(p, &br->port_list, list) { | |
907b1e6e NA |
710 | vg = nbp_vlan_group(p); |
711 | list_for_each_entry(vlan, &vg->vlan_list, vlist) { | |
2594e906 | 712 | err = vlan_vid_add(p->dev, proto, vlan->vid); |
204177f3 TM |
713 | if (err) |
714 | goto err_filt; | |
715 | } | |
716 | } | |
717 | ||
718 | oldproto = br->vlan_proto; | |
719 | br->vlan_proto = proto; | |
720 | ||
721 | recalculate_group_addr(br); | |
722 | br_recalculate_fwd_mask(br); | |
723 | ||
724 | /* Delete VLANs for the old proto from the device filter. */ | |
907b1e6e NA |
725 | list_for_each_entry(p, &br->port_list, list) { |
726 | vg = nbp_vlan_group(p); | |
727 | list_for_each_entry(vlan, &vg->vlan_list, vlist) | |
2594e906 | 728 | vlan_vid_del(p->dev, oldproto, vlan->vid); |
907b1e6e | 729 | } |
204177f3 | 730 | |
d2d427b3 | 731 | return 0; |
204177f3 TM |
732 | |
733 | err_filt: | |
907b1e6e | 734 | list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) |
2594e906 | 735 | vlan_vid_del(p->dev, proto, vlan->vid); |
204177f3 | 736 | |
907b1e6e NA |
737 | list_for_each_entry_continue_reverse(p, &br->port_list, list) { |
738 | vg = nbp_vlan_group(p); | |
739 | list_for_each_entry(vlan, &vg->vlan_list, vlist) | |
2594e906 | 740 | vlan_vid_del(p->dev, proto, vlan->vid); |
907b1e6e | 741 | } |
204177f3 | 742 | |
d2d427b3 TM |
743 | return err; |
744 | } | |
745 | ||
746 | int br_vlan_set_proto(struct net_bridge *br, unsigned long val) | |
747 | { | |
d2d427b3 TM |
748 | if (val != ETH_P_8021Q && val != ETH_P_8021AD) |
749 | return -EPROTONOSUPPORT; | |
750 | ||
047831a9 | 751 | return __br_vlan_set_proto(br, htons(val)); |
204177f3 TM |
752 | } |
753 | ||
6dada9b1 NA |
754 | int br_vlan_set_stats(struct net_bridge *br, unsigned long val) |
755 | { | |
756 | switch (val) { | |
757 | case 0: | |
758 | case 1: | |
759 | br->vlan_stats_enabled = val; | |
760 | break; | |
761 | default: | |
762 | return -EINVAL; | |
763 | } | |
764 | ||
765 | return 0; | |
766 | } | |
767 | ||
77751ee8 | 768 | static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid) |
5be5a2df | 769 | { |
2594e906 NA |
770 | struct net_bridge_vlan *v; |
771 | ||
77751ee8 | 772 | if (vid != vg->pvid) |
2594e906 NA |
773 | return false; |
774 | ||
775 | v = br_vlan_lookup(&vg->vlan_hash, vid); | |
776 | if (v && br_vlan_should_use(v) && | |
777 | (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) | |
778 | return true; | |
779 | ||
780 | return false; | |
5be5a2df VY |
781 | } |
782 | ||
783 | static void br_vlan_disable_default_pvid(struct net_bridge *br) | |
784 | { | |
785 | struct net_bridge_port *p; | |
786 | u16 pvid = br->default_pvid; | |
787 | ||
788 | /* Disable default_pvid on all ports where it is still | |
789 | * configured. | |
790 | */ | |
907b1e6e | 791 | if (vlan_default_pvid(br_vlan_group(br), pvid)) |
5be5a2df VY |
792 | br_vlan_delete(br, pvid); |
793 | ||
794 | list_for_each_entry(p, &br->port_list, list) { | |
907b1e6e | 795 | if (vlan_default_pvid(nbp_vlan_group(p), pvid)) |
5be5a2df VY |
796 | nbp_vlan_delete(p, pvid); |
797 | } | |
798 | ||
799 | br->default_pvid = 0; | |
800 | } | |
801 | ||
0f963b75 | 802 | int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid) |
5be5a2df | 803 | { |
2594e906 | 804 | const struct net_bridge_vlan *pvent; |
907b1e6e | 805 | struct net_bridge_vlan_group *vg; |
5be5a2df VY |
806 | struct net_bridge_port *p; |
807 | u16 old_pvid; | |
808 | int err = 0; | |
809 | unsigned long *changed; | |
810 | ||
0f963b75 NA |
811 | if (!pvid) { |
812 | br_vlan_disable_default_pvid(br); | |
813 | return 0; | |
814 | } | |
815 | ||
5be5a2df VY |
816 | changed = kcalloc(BITS_TO_LONGS(BR_MAX_PORTS), sizeof(unsigned long), |
817 | GFP_KERNEL); | |
818 | if (!changed) | |
819 | return -ENOMEM; | |
820 | ||
821 | old_pvid = br->default_pvid; | |
822 | ||
823 | /* Update default_pvid config only if we do not conflict with | |
824 | * user configuration. | |
825 | */ | |
907b1e6e NA |
826 | vg = br_vlan_group(br); |
827 | pvent = br_vlan_find(vg, pvid); | |
828 | if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) && | |
2594e906 | 829 | (!pvent || !br_vlan_should_use(pvent))) { |
5be5a2df VY |
830 | err = br_vlan_add(br, pvid, |
831 | BRIDGE_VLAN_INFO_PVID | | |
2594e906 NA |
832 | BRIDGE_VLAN_INFO_UNTAGGED | |
833 | BRIDGE_VLAN_INFO_BRENTRY); | |
5be5a2df VY |
834 | if (err) |
835 | goto out; | |
836 | br_vlan_delete(br, old_pvid); | |
837 | set_bit(0, changed); | |
838 | } | |
839 | ||
840 | list_for_each_entry(p, &br->port_list, list) { | |
841 | /* Update default_pvid config only if we do not conflict with | |
842 | * user configuration. | |
843 | */ | |
907b1e6e | 844 | vg = nbp_vlan_group(p); |
5be5a2df | 845 | if ((old_pvid && |
907b1e6e NA |
846 | !vlan_default_pvid(vg, old_pvid)) || |
847 | br_vlan_find(vg, pvid)) | |
5be5a2df VY |
848 | continue; |
849 | ||
850 | err = nbp_vlan_add(p, pvid, | |
851 | BRIDGE_VLAN_INFO_PVID | | |
852 | BRIDGE_VLAN_INFO_UNTAGGED); | |
853 | if (err) | |
854 | goto err_port; | |
855 | nbp_vlan_delete(p, old_pvid); | |
856 | set_bit(p->port_no, changed); | |
857 | } | |
858 | ||
859 | br->default_pvid = pvid; | |
860 | ||
861 | out: | |
862 | kfree(changed); | |
863 | return err; | |
864 | ||
865 | err_port: | |
866 | list_for_each_entry_continue_reverse(p, &br->port_list, list) { | |
867 | if (!test_bit(p->port_no, changed)) | |
868 | continue; | |
869 | ||
870 | if (old_pvid) | |
871 | nbp_vlan_add(p, old_pvid, | |
872 | BRIDGE_VLAN_INFO_PVID | | |
873 | BRIDGE_VLAN_INFO_UNTAGGED); | |
874 | nbp_vlan_delete(p, pvid); | |
875 | } | |
876 | ||
877 | if (test_bit(0, changed)) { | |
878 | if (old_pvid) | |
879 | br_vlan_add(br, old_pvid, | |
880 | BRIDGE_VLAN_INFO_PVID | | |
2594e906 NA |
881 | BRIDGE_VLAN_INFO_UNTAGGED | |
882 | BRIDGE_VLAN_INFO_BRENTRY); | |
5be5a2df VY |
883 | br_vlan_delete(br, pvid); |
884 | } | |
885 | goto out; | |
886 | } | |
887 | ||
96a20d9d VY |
888 | int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val) |
889 | { | |
890 | u16 pvid = val; | |
891 | int err = 0; | |
892 | ||
5be5a2df | 893 | if (val >= VLAN_VID_MASK) |
96a20d9d VY |
894 | return -EINVAL; |
895 | ||
96a20d9d | 896 | if (pvid == br->default_pvid) |
047831a9 | 897 | goto out; |
96a20d9d VY |
898 | |
899 | /* Only allow default pvid change when filtering is disabled */ | |
900 | if (br->vlan_enabled) { | |
901 | pr_info_once("Please disable vlan filtering to change default_pvid\n"); | |
902 | err = -EPERM; | |
047831a9 | 903 | goto out; |
96a20d9d | 904 | } |
0f963b75 | 905 | err = __br_vlan_set_default_pvid(br, pvid); |
047831a9 | 906 | out: |
96a20d9d VY |
907 | return err; |
908 | } | |
909 | ||
5be5a2df | 910 | int br_vlan_init(struct net_bridge *br) |
8580e211 | 911 | { |
907b1e6e | 912 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
913 | int ret = -ENOMEM; |
914 | ||
907b1e6e NA |
915 | vg = kzalloc(sizeof(*vg), GFP_KERNEL); |
916 | if (!vg) | |
2594e906 | 917 | goto out; |
907b1e6e | 918 | ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); |
2594e906 NA |
919 | if (ret) |
920 | goto err_rhtbl; | |
907b1e6e | 921 | INIT_LIST_HEAD(&vg->vlan_list); |
8580e211 | 922 | br->vlan_proto = htons(ETH_P_8021Q); |
96a20d9d | 923 | br->default_pvid = 1; |
907b1e6e | 924 | rcu_assign_pointer(br->vlgrp, vg); |
2594e906 NA |
925 | ret = br_vlan_add(br, 1, |
926 | BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED | | |
927 | BRIDGE_VLAN_INFO_BRENTRY); | |
928 | if (ret) | |
929 | goto err_vlan_add; | |
930 | ||
931 | out: | |
932 | return ret; | |
933 | ||
934 | err_vlan_add: | |
907b1e6e | 935 | rhashtable_destroy(&vg->vlan_hash); |
2594e906 | 936 | err_rhtbl: |
907b1e6e | 937 | kfree(vg); |
2594e906 NA |
938 | |
939 | goto out; | |
940 | } | |
941 | ||
942 | int nbp_vlan_init(struct net_bridge_port *p) | |
943 | { | |
404cdbf0 ER |
944 | struct switchdev_attr attr = { |
945 | .orig_dev = p->br->dev, | |
946 | .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, | |
947 | .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, | |
948 | .u.vlan_filtering = p->br->vlan_enabled, | |
949 | }; | |
263344e6 | 950 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
951 | int ret = -ENOMEM; |
952 | ||
263344e6 NA |
953 | vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); |
954 | if (!vg) | |
2594e906 NA |
955 | goto out; |
956 | ||
404cdbf0 ER |
957 | ret = switchdev_port_attr_set(p->dev, &attr); |
958 | if (ret && ret != -EOPNOTSUPP) | |
959 | goto err_vlan_enabled; | |
960 | ||
263344e6 | 961 | ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); |
2594e906 NA |
962 | if (ret) |
963 | goto err_rhtbl; | |
263344e6 | 964 | INIT_LIST_HEAD(&vg->vlan_list); |
907b1e6e | 965 | rcu_assign_pointer(p->vlgrp, vg); |
2594e906 NA |
966 | if (p->br->default_pvid) { |
967 | ret = nbp_vlan_add(p, p->br->default_pvid, | |
968 | BRIDGE_VLAN_INFO_PVID | | |
969 | BRIDGE_VLAN_INFO_UNTAGGED); | |
970 | if (ret) | |
971 | goto err_vlan_add; | |
972 | } | |
973 | out: | |
974 | return ret; | |
975 | ||
976 | err_vlan_add: | |
07bc588f IS |
977 | RCU_INIT_POINTER(p->vlgrp, NULL); |
978 | synchronize_rcu(); | |
263344e6 | 979 | rhashtable_destroy(&vg->vlan_hash); |
404cdbf0 | 980 | err_vlan_enabled: |
2594e906 | 981 | err_rhtbl: |
263344e6 | 982 | kfree(vg); |
2594e906 NA |
983 | |
984 | goto out; | |
8580e211 TM |
985 | } |
986 | ||
8adff41c TM |
987 | /* Must be protected by RTNL. |
988 | * Must be called with vid in range from 1 to 4094 inclusive. | |
989 | */ | |
552406c4 | 990 | int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 | 991 | { |
7fbac984 IS |
992 | struct switchdev_obj_port_vlan v = { |
993 | .obj.orig_dev = port->dev, | |
994 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, | |
995 | .flags = flags, | |
996 | .vid_begin = vid, | |
997 | .vid_end = vid, | |
998 | }; | |
2594e906 NA |
999 | struct net_bridge_vlan *vlan; |
1000 | int ret; | |
243a2e63 VY |
1001 | |
1002 | ASSERT_RTNL(); | |
1003 | ||
907b1e6e | 1004 | vlan = br_vlan_find(nbp_vlan_group(port), vid); |
2594e906 | 1005 | if (vlan) { |
7fbac984 IS |
1006 | /* Pass the flags to the hardware bridge */ |
1007 | ret = switchdev_port_obj_add(port->dev, &v.obj); | |
1008 | if (ret && ret != -EOPNOTSUPP) | |
1009 | return ret; | |
2594e906 NA |
1010 | __vlan_add_flags(vlan, flags); |
1011 | return 0; | |
243a2e63 VY |
1012 | } |
1013 | ||
2594e906 NA |
1014 | vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); |
1015 | if (!vlan) | |
1016 | return -ENOMEM; | |
243a2e63 | 1017 | |
2594e906 NA |
1018 | vlan->vid = vid; |
1019 | vlan->port = port; | |
1020 | ret = __vlan_add(vlan, flags); | |
1021 | if (ret) | |
1022 | kfree(vlan); | |
243a2e63 | 1023 | |
2594e906 | 1024 | return ret; |
243a2e63 VY |
1025 | } |
1026 | ||
8adff41c TM |
1027 | /* Must be protected by RTNL. |
1028 | * Must be called with vid in range from 1 to 4094 inclusive. | |
1029 | */ | |
243a2e63 VY |
1030 | int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) |
1031 | { | |
2594e906 | 1032 | struct net_bridge_vlan *v; |
243a2e63 VY |
1033 | |
1034 | ASSERT_RTNL(); | |
1035 | ||
907b1e6e | 1036 | v = br_vlan_find(nbp_vlan_group(port), vid); |
2594e906 NA |
1037 | if (!v) |
1038 | return -ENOENT; | |
424bb9c9 | 1039 | br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); |
1ea2d020 | 1040 | br_fdb_delete_by_port(port->br, port, vid, 0); |
bc9a25d2 | 1041 | |
2594e906 | 1042 | return __vlan_del(v); |
243a2e63 VY |
1043 | } |
1044 | ||
1045 | void nbp_vlan_flush(struct net_bridge_port *port) | |
1046 | { | |
f409d0ed NA |
1047 | struct net_bridge_vlan_group *vg; |
1048 | ||
243a2e63 VY |
1049 | ASSERT_RTNL(); |
1050 | ||
f409d0ed NA |
1051 | vg = nbp_vlan_group(port); |
1052 | __vlan_flush(vg); | |
1053 | RCU_INIT_POINTER(port->vlgrp, NULL); | |
1054 | synchronize_rcu(); | |
1055 | __vlan_group_free(vg); | |
5be5a2df | 1056 | } |
a60c0903 NA |
1057 | |
1058 | void br_vlan_get_stats(const struct net_bridge_vlan *v, | |
1059 | struct br_vlan_stats *stats) | |
1060 | { | |
1061 | int i; | |
1062 | ||
1063 | memset(stats, 0, sizeof(*stats)); | |
1064 | for_each_possible_cpu(i) { | |
1065 | u64 rxpackets, rxbytes, txpackets, txbytes; | |
1066 | struct br_vlan_stats *cpu_stats; | |
1067 | unsigned int start; | |
1068 | ||
1069 | cpu_stats = per_cpu_ptr(v->stats, i); | |
1070 | do { | |
1071 | start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); | |
1072 | rxpackets = cpu_stats->rx_packets; | |
1073 | rxbytes = cpu_stats->rx_bytes; | |
1074 | txbytes = cpu_stats->tx_bytes; | |
1075 | txpackets = cpu_stats->tx_packets; | |
1076 | } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); | |
1077 | ||
1078 | stats->rx_packets += rxpackets; | |
1079 | stats->rx_bytes += rxbytes; | |
1080 | stats->tx_bytes += txbytes; | |
1081 | stats->tx_packets += txpackets; | |
1082 | } | |
1083 | } |