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" | |
efa5356b | 8 | #include "br_private_tunnel.h" |
243a2e63 | 9 | |
2594e906 NA |
10 | static inline int br_vlan_cmp(struct rhashtable_compare_arg *arg, |
11 | const void *ptr) | |
552406c4 | 12 | { |
2594e906 NA |
13 | const struct net_bridge_vlan *vle = ptr; |
14 | u16 vid = *(u16 *)arg->key; | |
15 | ||
16 | return vle->vid != vid; | |
17 | } | |
18 | ||
19 | static const struct rhashtable_params br_vlan_rht_params = { | |
20 | .head_offset = offsetof(struct net_bridge_vlan, vnode), | |
21 | .key_offset = offsetof(struct net_bridge_vlan, vid), | |
22 | .key_len = sizeof(u16), | |
8af78b64 NA |
23 | .nelem_hint = 3, |
24 | .locks_mul = 1, | |
2594e906 NA |
25 | .max_size = VLAN_N_VID, |
26 | .obj_cmpfn = br_vlan_cmp, | |
27 | .automatic_shrinking = true, | |
28 | }; | |
29 | ||
30 | static struct net_bridge_vlan *br_vlan_lookup(struct rhashtable *tbl, u16 vid) | |
31 | { | |
32 | return rhashtable_lookup_fast(tbl, &vid, br_vlan_rht_params); | |
33 | } | |
34 | ||
f418af63 | 35 | static bool __vlan_add_pvid(struct net_bridge_vlan_group *vg, u16 vid) |
2594e906 | 36 | { |
77751ee8 | 37 | if (vg->pvid == vid) |
f418af63 | 38 | return false; |
552406c4 VY |
39 | |
40 | smp_wmb(); | |
77751ee8 | 41 | vg->pvid = vid; |
f418af63 NA |
42 | |
43 | return true; | |
552406c4 VY |
44 | } |
45 | ||
f418af63 | 46 | static bool __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid) |
552406c4 | 47 | { |
77751ee8 | 48 | if (vg->pvid != vid) |
f418af63 | 49 | return false; |
552406c4 VY |
50 | |
51 | smp_wmb(); | |
77751ee8 | 52 | vg->pvid = 0; |
f418af63 NA |
53 | |
54 | return true; | |
552406c4 VY |
55 | } |
56 | ||
f418af63 NA |
57 | /* return true if anything changed, false otherwise */ |
58 | static bool __vlan_add_flags(struct net_bridge_vlan *v, u16 flags) | |
35e03f3a | 59 | { |
77751ee8 | 60 | struct net_bridge_vlan_group *vg; |
f418af63 NA |
61 | u16 old_flags = v->flags; |
62 | bool ret; | |
77751ee8 NA |
63 | |
64 | if (br_vlan_is_master(v)) | |
907b1e6e | 65 | vg = br_vlan_group(v->br); |
77751ee8 | 66 | else |
907b1e6e | 67 | vg = nbp_vlan_group(v->port); |
77751ee8 NA |
68 | |
69 | if (flags & BRIDGE_VLAN_INFO_PVID) | |
f418af63 | 70 | ret = __vlan_add_pvid(vg, v->vid); |
77751ee8 | 71 | else |
f418af63 | 72 | ret = __vlan_delete_pvid(vg, v->vid); |
35e03f3a VY |
73 | |
74 | if (flags & BRIDGE_VLAN_INFO_UNTAGGED) | |
2594e906 | 75 | v->flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
635126b7 | 76 | else |
2594e906 | 77 | v->flags &= ~BRIDGE_VLAN_INFO_UNTAGGED; |
f418af63 NA |
78 | |
79 | return ret || !!(old_flags ^ v->flags); | |
35e03f3a VY |
80 | } |
81 | ||
7f109539 SF |
82 | static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br, |
83 | u16 vid, u16 flags) | |
84 | { | |
0944d6b5 | 85 | struct switchdev_obj_port_vlan v = { |
6ff64f6f | 86 | .obj.orig_dev = dev, |
0944d6b5 JP |
87 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
88 | .flags = flags, | |
89 | .vid_begin = vid, | |
90 | .vid_end = vid, | |
91 | }; | |
7f109539 SF |
92 | int err; |
93 | ||
0944d6b5 JP |
94 | /* Try switchdev op first. In case it is not supported, fallback to |
95 | * 8021q add. | |
7f109539 | 96 | */ |
0944d6b5 JP |
97 | err = switchdev_port_obj_add(dev, &v.obj); |
98 | if (err == -EOPNOTSUPP) | |
99 | return vlan_vid_add(dev, br->vlan_proto, vid); | |
7f109539 SF |
100 | return err; |
101 | } | |
102 | ||
2594e906 | 103 | static void __vlan_add_list(struct net_bridge_vlan *v) |
243a2e63 | 104 | { |
907b1e6e | 105 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
106 | struct list_head *headp, *hpos; |
107 | struct net_bridge_vlan *vent; | |
bc9a25d2 | 108 | |
907b1e6e NA |
109 | if (br_vlan_is_master(v)) |
110 | vg = br_vlan_group(v->br); | |
111 | else | |
112 | vg = nbp_vlan_group(v->port); | |
113 | ||
114 | headp = &vg->vlan_list; | |
2594e906 NA |
115 | list_for_each_prev(hpos, headp) { |
116 | vent = list_entry(hpos, struct net_bridge_vlan, vlist); | |
117 | if (v->vid < vent->vid) | |
118 | continue; | |
119 | else | |
120 | break; | |
243a2e63 | 121 | } |
586c2b57 | 122 | list_add_rcu(&v->vlist, hpos); |
2594e906 | 123 | } |
243a2e63 | 124 | |
2594e906 NA |
125 | static void __vlan_del_list(struct net_bridge_vlan *v) |
126 | { | |
586c2b57 | 127 | list_del_rcu(&v->vlist); |
243a2e63 VY |
128 | } |
129 | ||
bf361ad3 VD |
130 | static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br, |
131 | u16 vid) | |
7f109539 | 132 | { |
0944d6b5 | 133 | struct switchdev_obj_port_vlan v = { |
6ff64f6f | 134 | .obj.orig_dev = dev, |
0944d6b5 JP |
135 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
136 | .vid_begin = vid, | |
137 | .vid_end = vid, | |
138 | }; | |
139 | int err; | |
7f109539 | 140 | |
0944d6b5 JP |
141 | /* Try switchdev op first. In case it is not supported, fallback to |
142 | * 8021q del. | |
7f109539 | 143 | */ |
0944d6b5 JP |
144 | err = switchdev_port_obj_del(dev, &v.obj); |
145 | if (err == -EOPNOTSUPP) { | |
7f109539 | 146 | vlan_vid_del(dev, br->vlan_proto, vid); |
0944d6b5 | 147 | return 0; |
7f109539 | 148 | } |
bf361ad3 | 149 | return err; |
7f109539 SF |
150 | } |
151 | ||
f8ed289f NA |
152 | /* Returns a master vlan, if it didn't exist it gets created. In all cases a |
153 | * a reference is taken to the master vlan before returning. | |
154 | */ | |
155 | static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid) | |
156 | { | |
907b1e6e | 157 | struct net_bridge_vlan_group *vg; |
f8ed289f NA |
158 | struct net_bridge_vlan *masterv; |
159 | ||
907b1e6e NA |
160 | vg = br_vlan_group(br); |
161 | masterv = br_vlan_find(vg, vid); | |
f8ed289f | 162 | if (!masterv) { |
f418af63 NA |
163 | bool changed; |
164 | ||
f8ed289f | 165 | /* missing global ctx, create it now */ |
f418af63 | 166 | if (br_vlan_add(br, vid, 0, &changed)) |
f8ed289f | 167 | return NULL; |
907b1e6e | 168 | masterv = br_vlan_find(vg, vid); |
f8ed289f NA |
169 | if (WARN_ON(!masterv)) |
170 | return NULL; | |
0e5a82ef IS |
171 | refcount_set(&masterv->refcnt, 1); |
172 | return masterv; | |
f8ed289f | 173 | } |
25127759 | 174 | refcount_inc(&masterv->refcnt); |
f8ed289f NA |
175 | |
176 | return masterv; | |
177 | } | |
178 | ||
6dada9b1 NA |
179 | static void br_master_vlan_rcu_free(struct rcu_head *rcu) |
180 | { | |
181 | struct net_bridge_vlan *v; | |
182 | ||
183 | v = container_of(rcu, struct net_bridge_vlan, rcu); | |
184 | WARN_ON(!br_vlan_is_master(v)); | |
185 | free_percpu(v->stats); | |
186 | v->stats = NULL; | |
187 | kfree(v); | |
188 | } | |
189 | ||
f8ed289f NA |
190 | static void br_vlan_put_master(struct net_bridge_vlan *masterv) |
191 | { | |
907b1e6e NA |
192 | struct net_bridge_vlan_group *vg; |
193 | ||
f8ed289f NA |
194 | if (!br_vlan_is_master(masterv)) |
195 | return; | |
196 | ||
907b1e6e | 197 | vg = br_vlan_group(masterv->br); |
25127759 | 198 | if (refcount_dec_and_test(&masterv->refcnt)) { |
907b1e6e | 199 | rhashtable_remove_fast(&vg->vlan_hash, |
f8ed289f NA |
200 | &masterv->vnode, br_vlan_rht_params); |
201 | __vlan_del_list(masterv); | |
6dada9b1 | 202 | call_rcu(&masterv->rcu, br_master_vlan_rcu_free); |
f8ed289f NA |
203 | } |
204 | } | |
205 | ||
2594e906 NA |
206 | /* This is the shared VLAN add function which works for both ports and bridge |
207 | * devices. There are four possible calls to this function in terms of the | |
208 | * vlan entry type: | |
209 | * 1. vlan is being added on a port (no master flags, global entry exists) | |
ddd611d3 | 210 | * 2. vlan is being added on a bridge (both master and brentry flags) |
2594e906 | 211 | * 3. vlan is being added on a port, but a global entry didn't exist which |
ddd611d3 | 212 | * is being created right now (master flag set, brentry flag unset), the |
2594e906 | 213 | * global entry is used for global per-vlan features, but not for filtering |
ddd611d3 | 214 | * 4. same as 3 but with both master and brentry flags set so the entry |
2594e906 NA |
215 | * will be used for filtering in both the port and the bridge |
216 | */ | |
217 | static int __vlan_add(struct net_bridge_vlan *v, u16 flags) | |
243a2e63 | 218 | { |
2594e906 NA |
219 | struct net_bridge_vlan *masterv = NULL; |
220 | struct net_bridge_port *p = NULL; | |
6be144f6 | 221 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
222 | struct net_device *dev; |
223 | struct net_bridge *br; | |
224 | int err; | |
225 | ||
226 | if (br_vlan_is_master(v)) { | |
227 | br = v->br; | |
228 | dev = br->dev; | |
907b1e6e | 229 | vg = br_vlan_group(br); |
2594e906 NA |
230 | } else { |
231 | p = v->port; | |
232 | br = p->br; | |
233 | dev = p->dev; | |
907b1e6e | 234 | vg = nbp_vlan_group(p); |
2594e906 NA |
235 | } |
236 | ||
237 | if (p) { | |
2594e906 NA |
238 | /* Add VLAN to the device filter if it is supported. |
239 | * This ensures tagged traffic enters the bridge when | |
240 | * promiscuous mode is disabled by br_manage_promisc(). | |
241 | */ | |
242 | err = __vlan_vid_add(dev, br, v->vid, flags); | |
243 | if (err) | |
244 | goto out; | |
245 | ||
246 | /* need to work on the master vlan too */ | |
247 | if (flags & BRIDGE_VLAN_INFO_MASTER) { | |
f418af63 NA |
248 | bool changed; |
249 | ||
250 | err = br_vlan_add(br, v->vid, | |
251 | flags | BRIDGE_VLAN_INFO_BRENTRY, | |
252 | &changed); | |
2594e906 NA |
253 | if (err) |
254 | goto out_filt; | |
255 | } | |
256 | ||
f8ed289f NA |
257 | masterv = br_vlan_get_master(br, v->vid); |
258 | if (!masterv) | |
259 | goto out_filt; | |
2594e906 | 260 | v->brvlan = masterv; |
6dada9b1 | 261 | v->stats = masterv->stats; |
2594e906 NA |
262 | } |
263 | ||
6be144f6 | 264 | /* Add the dev mac and count the vlan only if it's usable */ |
2594e906 NA |
265 | if (br_vlan_should_use(v)) { |
266 | err = br_fdb_insert(br, p, dev->dev_addr, v->vid); | |
267 | if (err) { | |
268 | br_err(br, "failed insert local address into bridge forwarding table\n"); | |
269 | goto out_filt; | |
270 | } | |
6be144f6 | 271 | vg->num_vlans++; |
2594e906 NA |
272 | } |
273 | ||
6be144f6 NA |
274 | err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode, |
275 | br_vlan_rht_params); | |
2594e906 NA |
276 | if (err) |
277 | goto out_fdb_insert; | |
243a2e63 | 278 | |
2594e906 NA |
279 | __vlan_add_list(v); |
280 | __vlan_add_flags(v, flags); | |
2594e906 NA |
281 | out: |
282 | return err; | |
283 | ||
284 | out_fdb_insert: | |
6be144f6 NA |
285 | if (br_vlan_should_use(v)) { |
286 | br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid); | |
287 | vg->num_vlans--; | |
288 | } | |
2594e906 NA |
289 | |
290 | out_filt: | |
291 | if (p) { | |
292 | __vlan_vid_del(dev, br, v->vid); | |
293 | if (masterv) { | |
f8ed289f | 294 | br_vlan_put_master(masterv); |
2594e906 NA |
295 | v->brvlan = NULL; |
296 | } | |
297 | } | |
298 | ||
299 | goto out; | |
300 | } | |
301 | ||
302 | static int __vlan_del(struct net_bridge_vlan *v) | |
303 | { | |
304 | struct net_bridge_vlan *masterv = v; | |
77751ee8 | 305 | struct net_bridge_vlan_group *vg; |
2594e906 | 306 | struct net_bridge_port *p = NULL; |
2594e906 | 307 | int err = 0; |
552406c4 | 308 | |
2594e906 | 309 | if (br_vlan_is_master(v)) { |
907b1e6e | 310 | vg = br_vlan_group(v->br); |
2594e906 NA |
311 | } else { |
312 | p = v->port; | |
907b1e6e | 313 | vg = nbp_vlan_group(v->port); |
2594e906 | 314 | masterv = v->brvlan; |
2594e906 | 315 | } |
bf361ad3 | 316 | |
77751ee8 | 317 | __vlan_delete_pvid(vg, v->vid); |
2594e906 NA |
318 | if (p) { |
319 | err = __vlan_vid_del(p->dev, p->br, v->vid); | |
bf361ad3 | 320 | if (err) |
2594e906 | 321 | goto out; |
8580e211 | 322 | } |
243a2e63 | 323 | |
6be144f6 NA |
324 | if (br_vlan_should_use(v)) { |
325 | v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY; | |
326 | vg->num_vlans--; | |
2594e906 NA |
327 | } |
328 | ||
329 | if (masterv != v) { | |
efa5356b | 330 | vlan_tunnel_info_del(vg, v); |
77751ee8 NA |
331 | rhashtable_remove_fast(&vg->vlan_hash, &v->vnode, |
332 | br_vlan_rht_params); | |
2594e906 | 333 | __vlan_del_list(v); |
243a2e63 VY |
334 | kfree_rcu(v, rcu); |
335 | } | |
2594e906 | 336 | |
f8ed289f | 337 | br_vlan_put_master(masterv); |
2594e906 NA |
338 | out: |
339 | return err; | |
243a2e63 VY |
340 | } |
341 | ||
f409d0ed NA |
342 | static void __vlan_group_free(struct net_bridge_vlan_group *vg) |
343 | { | |
344 | WARN_ON(!list_empty(&vg->vlan_list)); | |
345 | rhashtable_destroy(&vg->vlan_hash); | |
efa5356b | 346 | vlan_tunnel_deinit(vg); |
f409d0ed NA |
347 | kfree(vg); |
348 | } | |
349 | ||
350 | static void __vlan_flush(struct net_bridge_vlan_group *vg) | |
243a2e63 | 351 | { |
2594e906 NA |
352 | struct net_bridge_vlan *vlan, *tmp; |
353 | ||
f409d0ed NA |
354 | __vlan_delete_pvid(vg, vg->pvid); |
355 | list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist) | |
2594e906 | 356 | __vlan_del(vlan); |
243a2e63 VY |
357 | } |
358 | ||
78851988 | 359 | struct sk_buff *br_handle_vlan(struct net_bridge *br, |
11538d03 | 360 | const struct net_bridge_port *p, |
2594e906 | 361 | struct net_bridge_vlan_group *vg, |
78851988 | 362 | struct sk_buff *skb) |
a37b85c9 | 363 | { |
6dada9b1 | 364 | struct br_vlan_stats *stats; |
2594e906 | 365 | struct net_bridge_vlan *v; |
a37b85c9 VY |
366 | u16 vid; |
367 | ||
20adfa1a VY |
368 | /* If this packet was not filtered at input, let it pass */ |
369 | if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) | |
78851988 VY |
370 | goto out; |
371 | ||
2594e906 NA |
372 | /* At this point, we know that the frame was filtered and contains |
373 | * a valid vlan id. If the vlan id has untagged flag set, | |
374 | * send untagged; otherwise, send tagged. | |
375 | */ | |
376 | br_vlan_get_tag(skb, &vid); | |
377 | v = br_vlan_find(vg, vid); | |
378 | /* Vlan entry must be configured at this point. The | |
fc92f745 VY |
379 | * only exception is the bridge is set in promisc mode and the |
380 | * packet is destined for the bridge device. In this case | |
381 | * pass the packet as is. | |
382 | */ | |
2594e906 | 383 | if (!v || !br_vlan_should_use(v)) { |
fc92f745 VY |
384 | if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) { |
385 | goto out; | |
386 | } else { | |
387 | kfree_skb(skb); | |
388 | return NULL; | |
389 | } | |
390 | } | |
6dada9b1 NA |
391 | if (br->vlan_stats_enabled) { |
392 | stats = this_cpu_ptr(v->stats); | |
393 | u64_stats_update_begin(&stats->syncp); | |
394 | stats->tx_bytes += skb->len; | |
395 | stats->tx_packets++; | |
396 | u64_stats_update_end(&stats->syncp); | |
397 | } | |
398 | ||
2594e906 | 399 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
99b192da | 400 | skb->vlan_tci = 0; |
11538d03 RP |
401 | |
402 | if (p && (p->flags & BR_VLAN_TUNNEL) && | |
403 | br_handle_egress_vlan_tunnel(skb, v)) { | |
404 | kfree_skb(skb); | |
405 | return NULL; | |
406 | } | |
78851988 VY |
407 | out: |
408 | return skb; | |
409 | } | |
410 | ||
411 | /* Called under RCU */ | |
6dada9b1 NA |
412 | static bool __allowed_ingress(const struct net_bridge *br, |
413 | struct net_bridge_vlan_group *vg, | |
2594e906 | 414 | struct sk_buff *skb, u16 *vid) |
78851988 | 415 | { |
6dada9b1 NA |
416 | struct br_vlan_stats *stats; |
417 | struct net_bridge_vlan *v; | |
8580e211 | 418 | bool tagged; |
a37b85c9 | 419 | |
20adfa1a | 420 | BR_INPUT_SKB_CB(skb)->vlan_filtered = true; |
12464bb8 TM |
421 | /* If vlan tx offload is disabled on bridge device and frame was |
422 | * sent from vlan device on the bridge device, it does not have | |
423 | * HW accelerated vlan tag. | |
424 | */ | |
df8a39de | 425 | if (unlikely(!skb_vlan_tag_present(skb) && |
6dada9b1 | 426 | skb->protocol == br->vlan_proto)) { |
0d5501c1 | 427 | skb = skb_vlan_untag(skb); |
12464bb8 TM |
428 | if (unlikely(!skb)) |
429 | return false; | |
430 | } | |
431 | ||
8580e211 TM |
432 | if (!br_vlan_get_tag(skb, vid)) { |
433 | /* Tagged frame */ | |
6dada9b1 | 434 | if (skb->vlan_proto != br->vlan_proto) { |
8580e211 TM |
435 | /* Protocol-mismatch, empty out vlan_tci for new tag */ |
436 | skb_push(skb, ETH_HLEN); | |
62749e2c | 437 | skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto, |
df8a39de | 438 | skb_vlan_tag_get(skb)); |
8580e211 TM |
439 | if (unlikely(!skb)) |
440 | return false; | |
441 | ||
442 | skb_pull(skb, ETH_HLEN); | |
443 | skb_reset_mac_len(skb); | |
444 | *vid = 0; | |
445 | tagged = false; | |
446 | } else { | |
447 | tagged = true; | |
448 | } | |
449 | } else { | |
450 | /* Untagged frame */ | |
451 | tagged = false; | |
452 | } | |
453 | ||
b90356ce | 454 | if (!*vid) { |
77751ee8 NA |
455 | u16 pvid = br_get_pvid(vg); |
456 | ||
b90356ce TM |
457 | /* Frame had a tag with VID 0 or did not have a tag. |
458 | * See if pvid is set on this port. That tells us which | |
459 | * vlan untagged or priority-tagged traffic belongs to. | |
78851988 | 460 | */ |
3df6bf45 | 461 | if (!pvid) |
eb707618 | 462 | goto drop; |
78851988 | 463 | |
b90356ce TM |
464 | /* PVID is set on this port. Any untagged or priority-tagged |
465 | * ingress frame is considered to belong to this vlan. | |
78851988 | 466 | */ |
dfb5fa32 | 467 | *vid = pvid; |
8580e211 | 468 | if (likely(!tagged)) |
b90356ce | 469 | /* Untagged Frame. */ |
6dada9b1 | 470 | __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid); |
b90356ce TM |
471 | else |
472 | /* Priority-tagged Frame. | |
473 | * At this point, We know that skb->vlan_tci had | |
474 | * VLAN_TAG_PRESENT bit and its VID field was 0x000. | |
475 | * We update only VID field and preserve PCP field. | |
476 | */ | |
477 | skb->vlan_tci |= pvid; | |
478 | ||
6dada9b1 NA |
479 | /* if stats are disabled we can avoid the lookup */ |
480 | if (!br->vlan_stats_enabled) | |
481 | return true; | |
78851988 | 482 | } |
77751ee8 | 483 | v = br_vlan_find(vg, *vid); |
6dada9b1 NA |
484 | if (!v || !br_vlan_should_use(v)) |
485 | goto drop; | |
486 | ||
487 | if (br->vlan_stats_enabled) { | |
488 | stats = this_cpu_ptr(v->stats); | |
489 | u64_stats_update_begin(&stats->syncp); | |
490 | stats->rx_bytes += skb->len; | |
491 | stats->rx_packets++; | |
492 | u64_stats_update_end(&stats->syncp); | |
493 | } | |
494 | ||
495 | return true; | |
496 | ||
eb707618 TM |
497 | drop: |
498 | kfree_skb(skb); | |
a37b85c9 VY |
499 | return false; |
500 | } | |
501 | ||
77751ee8 NA |
502 | bool br_allowed_ingress(const struct net_bridge *br, |
503 | struct net_bridge_vlan_group *vg, struct sk_buff *skb, | |
504 | u16 *vid) | |
2594e906 NA |
505 | { |
506 | /* If VLAN filtering is disabled on the bridge, all packets are | |
507 | * permitted. | |
508 | */ | |
509 | if (!br->vlan_enabled) { | |
510 | BR_INPUT_SKB_CB(skb)->vlan_filtered = false; | |
511 | return true; | |
512 | } | |
513 | ||
6dada9b1 | 514 | return __allowed_ingress(br, vg, skb, vid); |
2594e906 NA |
515 | } |
516 | ||
85f46c6b | 517 | /* Called under RCU. */ |
2594e906 | 518 | bool br_allowed_egress(struct net_bridge_vlan_group *vg, |
85f46c6b VY |
519 | const struct sk_buff *skb) |
520 | { | |
2594e906 | 521 | const struct net_bridge_vlan *v; |
85f46c6b VY |
522 | u16 vid; |
523 | ||
20adfa1a VY |
524 | /* If this packet was not filtered at input, let it pass */ |
525 | if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) | |
85f46c6b VY |
526 | return true; |
527 | ||
85f46c6b | 528 | br_vlan_get_tag(skb, &vid); |
2594e906 NA |
529 | v = br_vlan_find(vg, vid); |
530 | if (v && br_vlan_should_use(v)) | |
85f46c6b VY |
531 | return true; |
532 | ||
533 | return false; | |
534 | } | |
535 | ||
e0d7968a TM |
536 | /* Called under RCU */ |
537 | bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) | |
538 | { | |
468e7944 | 539 | struct net_bridge_vlan_group *vg; |
e0d7968a | 540 | struct net_bridge *br = p->br; |
e0d7968a | 541 | |
20adfa1a | 542 | /* If filtering was disabled at input, let it pass. */ |
c095f248 | 543 | if (!br->vlan_enabled) |
e0d7968a TM |
544 | return true; |
545 | ||
eca1e006 | 546 | vg = nbp_vlan_group_rcu(p); |
468e7944 | 547 | if (!vg || !vg->num_vlans) |
e0d7968a TM |
548 | return false; |
549 | ||
8580e211 TM |
550 | if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto) |
551 | *vid = 0; | |
552 | ||
e0d7968a | 553 | if (!*vid) { |
77751ee8 | 554 | *vid = br_get_pvid(vg); |
3df6bf45 | 555 | if (!*vid) |
e0d7968a TM |
556 | return false; |
557 | ||
558 | return true; | |
559 | } | |
560 | ||
77751ee8 | 561 | if (br_vlan_find(vg, *vid)) |
e0d7968a TM |
562 | return true; |
563 | ||
564 | return false; | |
565 | } | |
566 | ||
8adff41c TM |
567 | /* Must be protected by RTNL. |
568 | * Must be called with vid in range from 1 to 4094 inclusive. | |
f418af63 | 569 | * changed must be true only if the vlan was created or updated |
8adff41c | 570 | */ |
f418af63 | 571 | int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed) |
243a2e63 | 572 | { |
907b1e6e | 573 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
574 | struct net_bridge_vlan *vlan; |
575 | int ret; | |
243a2e63 VY |
576 | |
577 | ASSERT_RTNL(); | |
578 | ||
f418af63 | 579 | *changed = false; |
907b1e6e NA |
580 | vg = br_vlan_group(br); |
581 | vlan = br_vlan_find(vg, vid); | |
2594e906 NA |
582 | if (vlan) { |
583 | if (!br_vlan_is_brentry(vlan)) { | |
584 | /* Trying to change flags of non-existent bridge vlan */ | |
585 | if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) | |
586 | return -EINVAL; | |
587 | /* It was only kept for port vlans, now make it real */ | |
588 | ret = br_fdb_insert(br, NULL, br->dev->dev_addr, | |
589 | vlan->vid); | |
590 | if (ret) { | |
591 | br_err(br, "failed insert local address into bridge forwarding table\n"); | |
592 | return ret; | |
593 | } | |
25127759 | 594 | refcount_inc(&vlan->refcnt); |
2594e906 | 595 | vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY; |
907b1e6e | 596 | vg->num_vlans++; |
f418af63 | 597 | *changed = true; |
2594e906 | 598 | } |
f418af63 NA |
599 | if (__vlan_add_flags(vlan, flags)) |
600 | *changed = true; | |
601 | ||
2594e906 NA |
602 | return 0; |
603 | } | |
243a2e63 | 604 | |
2594e906 NA |
605 | vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); |
606 | if (!vlan) | |
243a2e63 VY |
607 | return -ENOMEM; |
608 | ||
6dada9b1 NA |
609 | vlan->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats); |
610 | if (!vlan->stats) { | |
611 | kfree(vlan); | |
612 | return -ENOMEM; | |
613 | } | |
2594e906 NA |
614 | vlan->vid = vid; |
615 | vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER; | |
616 | vlan->flags &= ~BRIDGE_VLAN_INFO_PVID; | |
617 | vlan->br = br; | |
618 | if (flags & BRIDGE_VLAN_INFO_BRENTRY) | |
25127759 | 619 | refcount_set(&vlan->refcnt, 1); |
2594e906 | 620 | ret = __vlan_add(vlan, flags); |
6dada9b1 NA |
621 | if (ret) { |
622 | free_percpu(vlan->stats); | |
2594e906 | 623 | kfree(vlan); |
f418af63 NA |
624 | } else { |
625 | *changed = true; | |
6dada9b1 | 626 | } |
243a2e63 | 627 | |
2594e906 | 628 | return ret; |
243a2e63 VY |
629 | } |
630 | ||
8adff41c TM |
631 | /* Must be protected by RTNL. |
632 | * Must be called with vid in range from 1 to 4094 inclusive. | |
633 | */ | |
243a2e63 VY |
634 | int br_vlan_delete(struct net_bridge *br, u16 vid) |
635 | { | |
907b1e6e | 636 | struct net_bridge_vlan_group *vg; |
2594e906 | 637 | struct net_bridge_vlan *v; |
243a2e63 VY |
638 | |
639 | ASSERT_RTNL(); | |
640 | ||
907b1e6e NA |
641 | vg = br_vlan_group(br); |
642 | v = br_vlan_find(vg, vid); | |
2594e906 NA |
643 | if (!v || !br_vlan_is_brentry(v)) |
644 | return -ENOENT; | |
243a2e63 | 645 | |
424bb9c9 | 646 | br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); |
3741873b | 647 | br_fdb_delete_by_port(br, NULL, vid, 0); |
bc9a25d2 | 648 | |
efa5356b RP |
649 | vlan_tunnel_info_del(vg, v); |
650 | ||
2594e906 | 651 | return __vlan_del(v); |
243a2e63 VY |
652 | } |
653 | ||
654 | void br_vlan_flush(struct net_bridge *br) | |
655 | { | |
f409d0ed NA |
656 | struct net_bridge_vlan_group *vg; |
657 | ||
243a2e63 | 658 | ASSERT_RTNL(); |
243a2e63 | 659 | |
f409d0ed NA |
660 | vg = br_vlan_group(br); |
661 | __vlan_flush(vg); | |
662 | RCU_INIT_POINTER(br->vlgrp, NULL); | |
663 | synchronize_rcu(); | |
664 | __vlan_group_free(vg); | |
243a2e63 VY |
665 | } |
666 | ||
2594e906 | 667 | struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid) |
2b292fb4 | 668 | { |
2594e906 NA |
669 | if (!vg) |
670 | return NULL; | |
2b292fb4 | 671 | |
2594e906 | 672 | return br_vlan_lookup(&vg->vlan_hash, vid); |
2b292fb4 TM |
673 | } |
674 | ||
204177f3 TM |
675 | /* Must be protected by RTNL. */ |
676 | static void recalculate_group_addr(struct net_bridge *br) | |
677 | { | |
678 | if (br->group_addr_set) | |
679 | return; | |
680 | ||
681 | spin_lock_bh(&br->lock); | |
682 | if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) { | |
683 | /* Bridge Group Address */ | |
684 | br->group_addr[5] = 0x00; | |
685 | } else { /* vlan_enabled && ETH_P_8021AD */ | |
686 | /* Provider Bridge Group Address */ | |
687 | br->group_addr[5] = 0x08; | |
688 | } | |
689 | spin_unlock_bh(&br->lock); | |
690 | } | |
691 | ||
692 | /* Must be protected by RTNL. */ | |
693 | void br_recalculate_fwd_mask(struct net_bridge *br) | |
694 | { | |
695 | if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) | |
696 | br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; | |
697 | else /* vlan_enabled && ETH_P_8021AD */ | |
698 | br->group_fwd_mask_required = BR_GROUPFWD_8021AD & | |
699 | ~(1u << br->group_addr[5]); | |
700 | } | |
701 | ||
a7854037 | 702 | int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) |
243a2e63 | 703 | { |
6b72a770 ER |
704 | struct switchdev_attr attr = { |
705 | .orig_dev = br->dev, | |
706 | .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, | |
707 | .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, | |
708 | .u.vlan_filtering = val, | |
709 | }; | |
710 | int err; | |
711 | ||
243a2e63 | 712 | if (br->vlan_enabled == val) |
a7854037 | 713 | return 0; |
243a2e63 | 714 | |
6b72a770 ER |
715 | err = switchdev_port_attr_set(br->dev, &attr); |
716 | if (err && err != -EOPNOTSUPP) | |
717 | return err; | |
718 | ||
243a2e63 | 719 | br->vlan_enabled = val; |
2796d0c6 | 720 | br_manage_promisc(br); |
204177f3 TM |
721 | recalculate_group_addr(br); |
722 | br_recalculate_fwd_mask(br); | |
243a2e63 | 723 | |
a7854037 NA |
724 | return 0; |
725 | } | |
726 | ||
727 | int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) | |
728 | { | |
047831a9 | 729 | return __br_vlan_filter_toggle(br, val); |
243a2e63 VY |
730 | } |
731 | ||
1f51445a IS |
732 | bool br_vlan_enabled(const struct net_device *dev) |
733 | { | |
734 | struct net_bridge *br = netdev_priv(dev); | |
735 | ||
736 | return !!br->vlan_enabled; | |
737 | } | |
738 | EXPORT_SYMBOL_GPL(br_vlan_enabled); | |
739 | ||
d2d427b3 | 740 | int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) |
204177f3 TM |
741 | { |
742 | int err = 0; | |
743 | struct net_bridge_port *p; | |
2594e906 | 744 | struct net_bridge_vlan *vlan; |
907b1e6e | 745 | struct net_bridge_vlan_group *vg; |
d2d427b3 | 746 | __be16 oldproto; |
204177f3 | 747 | |
204177f3 | 748 | if (br->vlan_proto == proto) |
d2d427b3 | 749 | return 0; |
204177f3 TM |
750 | |
751 | /* Add VLANs for the new proto to the device filter. */ | |
752 | list_for_each_entry(p, &br->port_list, list) { | |
907b1e6e NA |
753 | vg = nbp_vlan_group(p); |
754 | list_for_each_entry(vlan, &vg->vlan_list, vlist) { | |
2594e906 | 755 | err = vlan_vid_add(p->dev, proto, vlan->vid); |
204177f3 TM |
756 | if (err) |
757 | goto err_filt; | |
758 | } | |
759 | } | |
760 | ||
761 | oldproto = br->vlan_proto; | |
762 | br->vlan_proto = proto; | |
763 | ||
764 | recalculate_group_addr(br); | |
765 | br_recalculate_fwd_mask(br); | |
766 | ||
767 | /* Delete VLANs for the old proto from the device filter. */ | |
907b1e6e NA |
768 | list_for_each_entry(p, &br->port_list, list) { |
769 | vg = nbp_vlan_group(p); | |
770 | list_for_each_entry(vlan, &vg->vlan_list, vlist) | |
2594e906 | 771 | vlan_vid_del(p->dev, oldproto, vlan->vid); |
907b1e6e | 772 | } |
204177f3 | 773 | |
d2d427b3 | 774 | return 0; |
204177f3 TM |
775 | |
776 | err_filt: | |
907b1e6e | 777 | list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) |
2594e906 | 778 | vlan_vid_del(p->dev, proto, vlan->vid); |
204177f3 | 779 | |
907b1e6e NA |
780 | list_for_each_entry_continue_reverse(p, &br->port_list, list) { |
781 | vg = nbp_vlan_group(p); | |
782 | list_for_each_entry(vlan, &vg->vlan_list, vlist) | |
2594e906 | 783 | vlan_vid_del(p->dev, proto, vlan->vid); |
907b1e6e | 784 | } |
204177f3 | 785 | |
d2d427b3 TM |
786 | return err; |
787 | } | |
788 | ||
789 | int br_vlan_set_proto(struct net_bridge *br, unsigned long val) | |
790 | { | |
d2d427b3 TM |
791 | if (val != ETH_P_8021Q && val != ETH_P_8021AD) |
792 | return -EPROTONOSUPPORT; | |
793 | ||
047831a9 | 794 | return __br_vlan_set_proto(br, htons(val)); |
204177f3 TM |
795 | } |
796 | ||
6dada9b1 NA |
797 | int br_vlan_set_stats(struct net_bridge *br, unsigned long val) |
798 | { | |
799 | switch (val) { | |
800 | case 0: | |
801 | case 1: | |
802 | br->vlan_stats_enabled = val; | |
803 | break; | |
804 | default: | |
805 | return -EINVAL; | |
806 | } | |
807 | ||
808 | return 0; | |
809 | } | |
810 | ||
77751ee8 | 811 | static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid) |
5be5a2df | 812 | { |
2594e906 NA |
813 | struct net_bridge_vlan *v; |
814 | ||
77751ee8 | 815 | if (vid != vg->pvid) |
2594e906 NA |
816 | return false; |
817 | ||
818 | v = br_vlan_lookup(&vg->vlan_hash, vid); | |
819 | if (v && br_vlan_should_use(v) && | |
820 | (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) | |
821 | return true; | |
822 | ||
823 | return false; | |
5be5a2df VY |
824 | } |
825 | ||
826 | static void br_vlan_disable_default_pvid(struct net_bridge *br) | |
827 | { | |
828 | struct net_bridge_port *p; | |
829 | u16 pvid = br->default_pvid; | |
830 | ||
831 | /* Disable default_pvid on all ports where it is still | |
832 | * configured. | |
833 | */ | |
907b1e6e | 834 | if (vlan_default_pvid(br_vlan_group(br), pvid)) |
5be5a2df VY |
835 | br_vlan_delete(br, pvid); |
836 | ||
837 | list_for_each_entry(p, &br->port_list, list) { | |
907b1e6e | 838 | if (vlan_default_pvid(nbp_vlan_group(p), pvid)) |
5be5a2df VY |
839 | nbp_vlan_delete(p, pvid); |
840 | } | |
841 | ||
842 | br->default_pvid = 0; | |
843 | } | |
844 | ||
0f963b75 | 845 | int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid) |
5be5a2df | 846 | { |
2594e906 | 847 | const struct net_bridge_vlan *pvent; |
907b1e6e | 848 | struct net_bridge_vlan_group *vg; |
5be5a2df | 849 | struct net_bridge_port *p; |
f418af63 NA |
850 | unsigned long *changed; |
851 | bool vlchange; | |
5be5a2df VY |
852 | u16 old_pvid; |
853 | int err = 0; | |
5be5a2df | 854 | |
0f963b75 NA |
855 | if (!pvid) { |
856 | br_vlan_disable_default_pvid(br); | |
857 | return 0; | |
858 | } | |
859 | ||
5be5a2df VY |
860 | changed = kcalloc(BITS_TO_LONGS(BR_MAX_PORTS), sizeof(unsigned long), |
861 | GFP_KERNEL); | |
862 | if (!changed) | |
863 | return -ENOMEM; | |
864 | ||
865 | old_pvid = br->default_pvid; | |
866 | ||
867 | /* Update default_pvid config only if we do not conflict with | |
868 | * user configuration. | |
869 | */ | |
907b1e6e NA |
870 | vg = br_vlan_group(br); |
871 | pvent = br_vlan_find(vg, pvid); | |
872 | if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) && | |
2594e906 | 873 | (!pvent || !br_vlan_should_use(pvent))) { |
5be5a2df VY |
874 | err = br_vlan_add(br, pvid, |
875 | BRIDGE_VLAN_INFO_PVID | | |
2594e906 | 876 | BRIDGE_VLAN_INFO_UNTAGGED | |
f418af63 NA |
877 | BRIDGE_VLAN_INFO_BRENTRY, |
878 | &vlchange); | |
5be5a2df VY |
879 | if (err) |
880 | goto out; | |
881 | br_vlan_delete(br, old_pvid); | |
882 | set_bit(0, changed); | |
883 | } | |
884 | ||
885 | list_for_each_entry(p, &br->port_list, list) { | |
886 | /* Update default_pvid config only if we do not conflict with | |
887 | * user configuration. | |
888 | */ | |
907b1e6e | 889 | vg = nbp_vlan_group(p); |
5be5a2df | 890 | if ((old_pvid && |
907b1e6e NA |
891 | !vlan_default_pvid(vg, old_pvid)) || |
892 | br_vlan_find(vg, pvid)) | |
5be5a2df VY |
893 | continue; |
894 | ||
895 | err = nbp_vlan_add(p, pvid, | |
896 | BRIDGE_VLAN_INFO_PVID | | |
f418af63 NA |
897 | BRIDGE_VLAN_INFO_UNTAGGED, |
898 | &vlchange); | |
5be5a2df VY |
899 | if (err) |
900 | goto err_port; | |
901 | nbp_vlan_delete(p, old_pvid); | |
902 | set_bit(p->port_no, changed); | |
903 | } | |
904 | ||
905 | br->default_pvid = pvid; | |
906 | ||
907 | out: | |
908 | kfree(changed); | |
909 | return err; | |
910 | ||
911 | err_port: | |
912 | list_for_each_entry_continue_reverse(p, &br->port_list, list) { | |
913 | if (!test_bit(p->port_no, changed)) | |
914 | continue; | |
915 | ||
916 | if (old_pvid) | |
917 | nbp_vlan_add(p, old_pvid, | |
918 | BRIDGE_VLAN_INFO_PVID | | |
f418af63 NA |
919 | BRIDGE_VLAN_INFO_UNTAGGED, |
920 | &vlchange); | |
5be5a2df VY |
921 | nbp_vlan_delete(p, pvid); |
922 | } | |
923 | ||
924 | if (test_bit(0, changed)) { | |
925 | if (old_pvid) | |
926 | br_vlan_add(br, old_pvid, | |
927 | BRIDGE_VLAN_INFO_PVID | | |
2594e906 | 928 | BRIDGE_VLAN_INFO_UNTAGGED | |
f418af63 NA |
929 | BRIDGE_VLAN_INFO_BRENTRY, |
930 | &vlchange); | |
5be5a2df VY |
931 | br_vlan_delete(br, pvid); |
932 | } | |
933 | goto out; | |
934 | } | |
935 | ||
96a20d9d VY |
936 | int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val) |
937 | { | |
938 | u16 pvid = val; | |
939 | int err = 0; | |
940 | ||
5be5a2df | 941 | if (val >= VLAN_VID_MASK) |
96a20d9d VY |
942 | return -EINVAL; |
943 | ||
96a20d9d | 944 | if (pvid == br->default_pvid) |
047831a9 | 945 | goto out; |
96a20d9d VY |
946 | |
947 | /* Only allow default pvid change when filtering is disabled */ | |
948 | if (br->vlan_enabled) { | |
949 | pr_info_once("Please disable vlan filtering to change default_pvid\n"); | |
950 | err = -EPERM; | |
047831a9 | 951 | goto out; |
96a20d9d | 952 | } |
0f963b75 | 953 | err = __br_vlan_set_default_pvid(br, pvid); |
047831a9 | 954 | out: |
96a20d9d VY |
955 | return err; |
956 | } | |
957 | ||
5be5a2df | 958 | int br_vlan_init(struct net_bridge *br) |
8580e211 | 959 | { |
907b1e6e | 960 | struct net_bridge_vlan_group *vg; |
2594e906 | 961 | int ret = -ENOMEM; |
f418af63 | 962 | bool changed; |
2594e906 | 963 | |
907b1e6e NA |
964 | vg = kzalloc(sizeof(*vg), GFP_KERNEL); |
965 | if (!vg) | |
2594e906 | 966 | goto out; |
907b1e6e | 967 | ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); |
2594e906 NA |
968 | if (ret) |
969 | goto err_rhtbl; | |
efa5356b RP |
970 | ret = vlan_tunnel_init(vg); |
971 | if (ret) | |
972 | goto err_tunnel_init; | |
907b1e6e | 973 | INIT_LIST_HEAD(&vg->vlan_list); |
8580e211 | 974 | br->vlan_proto = htons(ETH_P_8021Q); |
96a20d9d | 975 | br->default_pvid = 1; |
907b1e6e | 976 | rcu_assign_pointer(br->vlgrp, vg); |
2594e906 NA |
977 | ret = br_vlan_add(br, 1, |
978 | BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED | | |
f418af63 | 979 | BRIDGE_VLAN_INFO_BRENTRY, &changed); |
2594e906 NA |
980 | if (ret) |
981 | goto err_vlan_add; | |
982 | ||
983 | out: | |
984 | return ret; | |
985 | ||
986 | err_vlan_add: | |
efa5356b RP |
987 | vlan_tunnel_deinit(vg); |
988 | err_tunnel_init: | |
907b1e6e | 989 | rhashtable_destroy(&vg->vlan_hash); |
2594e906 | 990 | err_rhtbl: |
907b1e6e | 991 | kfree(vg); |
2594e906 NA |
992 | |
993 | goto out; | |
994 | } | |
995 | ||
996 | int nbp_vlan_init(struct net_bridge_port *p) | |
997 | { | |
404cdbf0 ER |
998 | struct switchdev_attr attr = { |
999 | .orig_dev = p->br->dev, | |
1000 | .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, | |
1001 | .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, | |
1002 | .u.vlan_filtering = p->br->vlan_enabled, | |
1003 | }; | |
263344e6 | 1004 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
1005 | int ret = -ENOMEM; |
1006 | ||
263344e6 NA |
1007 | vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); |
1008 | if (!vg) | |
2594e906 NA |
1009 | goto out; |
1010 | ||
404cdbf0 ER |
1011 | ret = switchdev_port_attr_set(p->dev, &attr); |
1012 | if (ret && ret != -EOPNOTSUPP) | |
1013 | goto err_vlan_enabled; | |
1014 | ||
263344e6 | 1015 | ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); |
2594e906 NA |
1016 | if (ret) |
1017 | goto err_rhtbl; | |
efa5356b RP |
1018 | ret = vlan_tunnel_init(vg); |
1019 | if (ret) | |
1020 | goto err_tunnel_init; | |
263344e6 | 1021 | INIT_LIST_HEAD(&vg->vlan_list); |
907b1e6e | 1022 | rcu_assign_pointer(p->vlgrp, vg); |
2594e906 | 1023 | if (p->br->default_pvid) { |
f418af63 NA |
1024 | bool changed; |
1025 | ||
2594e906 NA |
1026 | ret = nbp_vlan_add(p, p->br->default_pvid, |
1027 | BRIDGE_VLAN_INFO_PVID | | |
f418af63 NA |
1028 | BRIDGE_VLAN_INFO_UNTAGGED, |
1029 | &changed); | |
2594e906 NA |
1030 | if (ret) |
1031 | goto err_vlan_add; | |
1032 | } | |
1033 | out: | |
1034 | return ret; | |
1035 | ||
1036 | err_vlan_add: | |
07bc588f IS |
1037 | RCU_INIT_POINTER(p->vlgrp, NULL); |
1038 | synchronize_rcu(); | |
efa5356b | 1039 | vlan_tunnel_deinit(vg); |
efa5356b RP |
1040 | err_tunnel_init: |
1041 | rhashtable_destroy(&vg->vlan_hash); | |
2594e906 | 1042 | err_rhtbl: |
df2c4334 | 1043 | err_vlan_enabled: |
263344e6 | 1044 | kfree(vg); |
2594e906 NA |
1045 | |
1046 | goto out; | |
8580e211 TM |
1047 | } |
1048 | ||
8adff41c TM |
1049 | /* Must be protected by RTNL. |
1050 | * Must be called with vid in range from 1 to 4094 inclusive. | |
f418af63 | 1051 | * changed must be true only if the vlan was created or updated |
8adff41c | 1052 | */ |
f418af63 NA |
1053 | int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, |
1054 | bool *changed) | |
243a2e63 | 1055 | { |
7fbac984 IS |
1056 | struct switchdev_obj_port_vlan v = { |
1057 | .obj.orig_dev = port->dev, | |
1058 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, | |
1059 | .flags = flags, | |
1060 | .vid_begin = vid, | |
1061 | .vid_end = vid, | |
1062 | }; | |
2594e906 NA |
1063 | struct net_bridge_vlan *vlan; |
1064 | int ret; | |
243a2e63 VY |
1065 | |
1066 | ASSERT_RTNL(); | |
1067 | ||
f418af63 | 1068 | *changed = false; |
907b1e6e | 1069 | vlan = br_vlan_find(nbp_vlan_group(port), vid); |
2594e906 | 1070 | if (vlan) { |
7fbac984 IS |
1071 | /* Pass the flags to the hardware bridge */ |
1072 | ret = switchdev_port_obj_add(port->dev, &v.obj); | |
1073 | if (ret && ret != -EOPNOTSUPP) | |
1074 | return ret; | |
f418af63 NA |
1075 | *changed = __vlan_add_flags(vlan, flags); |
1076 | ||
2594e906 | 1077 | return 0; |
243a2e63 VY |
1078 | } |
1079 | ||
2594e906 NA |
1080 | vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); |
1081 | if (!vlan) | |
1082 | return -ENOMEM; | |
243a2e63 | 1083 | |
2594e906 NA |
1084 | vlan->vid = vid; |
1085 | vlan->port = port; | |
1086 | ret = __vlan_add(vlan, flags); | |
1087 | if (ret) | |
1088 | kfree(vlan); | |
f418af63 NA |
1089 | else |
1090 | *changed = true; | |
243a2e63 | 1091 | |
2594e906 | 1092 | return ret; |
243a2e63 VY |
1093 | } |
1094 | ||
8adff41c TM |
1095 | /* Must be protected by RTNL. |
1096 | * Must be called with vid in range from 1 to 4094 inclusive. | |
1097 | */ | |
243a2e63 VY |
1098 | int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) |
1099 | { | |
2594e906 | 1100 | struct net_bridge_vlan *v; |
243a2e63 VY |
1101 | |
1102 | ASSERT_RTNL(); | |
1103 | ||
907b1e6e | 1104 | v = br_vlan_find(nbp_vlan_group(port), vid); |
2594e906 NA |
1105 | if (!v) |
1106 | return -ENOENT; | |
424bb9c9 | 1107 | br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); |
1ea2d020 | 1108 | br_fdb_delete_by_port(port->br, port, vid, 0); |
bc9a25d2 | 1109 | |
2594e906 | 1110 | return __vlan_del(v); |
243a2e63 VY |
1111 | } |
1112 | ||
1113 | void nbp_vlan_flush(struct net_bridge_port *port) | |
1114 | { | |
f409d0ed NA |
1115 | struct net_bridge_vlan_group *vg; |
1116 | ||
243a2e63 VY |
1117 | ASSERT_RTNL(); |
1118 | ||
f409d0ed NA |
1119 | vg = nbp_vlan_group(port); |
1120 | __vlan_flush(vg); | |
1121 | RCU_INIT_POINTER(port->vlgrp, NULL); | |
1122 | synchronize_rcu(); | |
1123 | __vlan_group_free(vg); | |
5be5a2df | 1124 | } |
a60c0903 NA |
1125 | |
1126 | void br_vlan_get_stats(const struct net_bridge_vlan *v, | |
1127 | struct br_vlan_stats *stats) | |
1128 | { | |
1129 | int i; | |
1130 | ||
1131 | memset(stats, 0, sizeof(*stats)); | |
1132 | for_each_possible_cpu(i) { | |
1133 | u64 rxpackets, rxbytes, txpackets, txbytes; | |
1134 | struct br_vlan_stats *cpu_stats; | |
1135 | unsigned int start; | |
1136 | ||
1137 | cpu_stats = per_cpu_ptr(v->stats, i); | |
1138 | do { | |
1139 | start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); | |
1140 | rxpackets = cpu_stats->rx_packets; | |
1141 | rxbytes = cpu_stats->rx_bytes; | |
1142 | txbytes = cpu_stats->tx_bytes; | |
1143 | txpackets = cpu_stats->tx_packets; | |
1144 | } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); | |
1145 | ||
1146 | stats->rx_packets += rxpackets; | |
1147 | stats->rx_bytes += rxbytes; | |
1148 | stats->tx_bytes += txbytes; | |
1149 | stats->tx_packets += txpackets; | |
1150 | } | |
1151 | } |