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 | ||
77751ee8 | 35 | static void __vlan_add_pvid(struct net_bridge_vlan_group *vg, u16 vid) |
2594e906 | 36 | { |
77751ee8 | 37 | if (vg->pvid == vid) |
552406c4 VY |
38 | return; |
39 | ||
40 | smp_wmb(); | |
77751ee8 | 41 | vg->pvid = vid; |
552406c4 VY |
42 | } |
43 | ||
77751ee8 | 44 | static void __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid) |
552406c4 | 45 | { |
77751ee8 | 46 | if (vg->pvid != vid) |
552406c4 VY |
47 | return; |
48 | ||
49 | smp_wmb(); | |
77751ee8 | 50 | vg->pvid = 0; |
552406c4 VY |
51 | } |
52 | ||
2594e906 | 53 | static void __vlan_add_flags(struct net_bridge_vlan *v, u16 flags) |
35e03f3a | 54 | { |
77751ee8 NA |
55 | struct net_bridge_vlan_group *vg; |
56 | ||
57 | if (br_vlan_is_master(v)) | |
907b1e6e | 58 | vg = br_vlan_group(v->br); |
77751ee8 | 59 | else |
907b1e6e | 60 | vg = nbp_vlan_group(v->port); |
77751ee8 NA |
61 | |
62 | if (flags & BRIDGE_VLAN_INFO_PVID) | |
63 | __vlan_add_pvid(vg, v->vid); | |
64 | else | |
65 | __vlan_delete_pvid(vg, v->vid); | |
35e03f3a VY |
66 | |
67 | if (flags & BRIDGE_VLAN_INFO_UNTAGGED) | |
2594e906 | 68 | v->flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
635126b7 | 69 | else |
2594e906 | 70 | v->flags &= ~BRIDGE_VLAN_INFO_UNTAGGED; |
35e03f3a VY |
71 | } |
72 | ||
7f109539 SF |
73 | static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br, |
74 | u16 vid, u16 flags) | |
75 | { | |
0944d6b5 | 76 | struct switchdev_obj_port_vlan v = { |
6ff64f6f | 77 | .obj.orig_dev = dev, |
0944d6b5 JP |
78 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
79 | .flags = flags, | |
80 | .vid_begin = vid, | |
81 | .vid_end = vid, | |
82 | }; | |
7f109539 SF |
83 | int err; |
84 | ||
0944d6b5 JP |
85 | /* Try switchdev op first. In case it is not supported, fallback to |
86 | * 8021q add. | |
7f109539 | 87 | */ |
0944d6b5 JP |
88 | err = switchdev_port_obj_add(dev, &v.obj); |
89 | if (err == -EOPNOTSUPP) | |
90 | return vlan_vid_add(dev, br->vlan_proto, vid); | |
7f109539 SF |
91 | return err; |
92 | } | |
93 | ||
2594e906 | 94 | static void __vlan_add_list(struct net_bridge_vlan *v) |
243a2e63 | 95 | { |
907b1e6e | 96 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
97 | struct list_head *headp, *hpos; |
98 | struct net_bridge_vlan *vent; | |
bc9a25d2 | 99 | |
907b1e6e NA |
100 | if (br_vlan_is_master(v)) |
101 | vg = br_vlan_group(v->br); | |
102 | else | |
103 | vg = nbp_vlan_group(v->port); | |
104 | ||
105 | headp = &vg->vlan_list; | |
2594e906 NA |
106 | list_for_each_prev(hpos, headp) { |
107 | vent = list_entry(hpos, struct net_bridge_vlan, vlist); | |
108 | if (v->vid < vent->vid) | |
109 | continue; | |
110 | else | |
111 | break; | |
243a2e63 | 112 | } |
586c2b57 | 113 | list_add_rcu(&v->vlist, hpos); |
2594e906 | 114 | } |
243a2e63 | 115 | |
2594e906 NA |
116 | static void __vlan_del_list(struct net_bridge_vlan *v) |
117 | { | |
586c2b57 | 118 | list_del_rcu(&v->vlist); |
243a2e63 VY |
119 | } |
120 | ||
bf361ad3 VD |
121 | static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br, |
122 | u16 vid) | |
7f109539 | 123 | { |
0944d6b5 | 124 | struct switchdev_obj_port_vlan v = { |
6ff64f6f | 125 | .obj.orig_dev = dev, |
0944d6b5 JP |
126 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, |
127 | .vid_begin = vid, | |
128 | .vid_end = vid, | |
129 | }; | |
130 | int err; | |
7f109539 | 131 | |
0944d6b5 JP |
132 | /* Try switchdev op first. In case it is not supported, fallback to |
133 | * 8021q del. | |
7f109539 | 134 | */ |
0944d6b5 JP |
135 | err = switchdev_port_obj_del(dev, &v.obj); |
136 | if (err == -EOPNOTSUPP) { | |
7f109539 | 137 | vlan_vid_del(dev, br->vlan_proto, vid); |
0944d6b5 | 138 | return 0; |
7f109539 | 139 | } |
bf361ad3 | 140 | return err; |
7f109539 SF |
141 | } |
142 | ||
f8ed289f NA |
143 | /* Returns a master vlan, if it didn't exist it gets created. In all cases a |
144 | * a reference is taken to the master vlan before returning. | |
145 | */ | |
146 | static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid) | |
147 | { | |
907b1e6e | 148 | struct net_bridge_vlan_group *vg; |
f8ed289f NA |
149 | struct net_bridge_vlan *masterv; |
150 | ||
907b1e6e NA |
151 | vg = br_vlan_group(br); |
152 | masterv = br_vlan_find(vg, vid); | |
f8ed289f NA |
153 | if (!masterv) { |
154 | /* missing global ctx, create it now */ | |
155 | if (br_vlan_add(br, vid, 0)) | |
156 | return NULL; | |
907b1e6e | 157 | masterv = br_vlan_find(vg, vid); |
f8ed289f NA |
158 | if (WARN_ON(!masterv)) |
159 | return NULL; | |
cbd173b8 IS |
160 | refcount_set(&masterv->refcnt, 1); |
161 | return masterv; | |
f8ed289f | 162 | } |
25127759 | 163 | refcount_inc(&masterv->refcnt); |
f8ed289f NA |
164 | |
165 | return masterv; | |
166 | } | |
167 | ||
6dada9b1 NA |
168 | static void br_master_vlan_rcu_free(struct rcu_head *rcu) |
169 | { | |
170 | struct net_bridge_vlan *v; | |
171 | ||
172 | v = container_of(rcu, struct net_bridge_vlan, rcu); | |
173 | WARN_ON(!br_vlan_is_master(v)); | |
174 | free_percpu(v->stats); | |
175 | v->stats = NULL; | |
176 | kfree(v); | |
177 | } | |
178 | ||
f8ed289f NA |
179 | static void br_vlan_put_master(struct net_bridge_vlan *masterv) |
180 | { | |
907b1e6e NA |
181 | struct net_bridge_vlan_group *vg; |
182 | ||
f8ed289f NA |
183 | if (!br_vlan_is_master(masterv)) |
184 | return; | |
185 | ||
907b1e6e | 186 | vg = br_vlan_group(masterv->br); |
25127759 | 187 | if (refcount_dec_and_test(&masterv->refcnt)) { |
907b1e6e | 188 | rhashtable_remove_fast(&vg->vlan_hash, |
f8ed289f NA |
189 | &masterv->vnode, br_vlan_rht_params); |
190 | __vlan_del_list(masterv); | |
6dada9b1 | 191 | call_rcu(&masterv->rcu, br_master_vlan_rcu_free); |
f8ed289f NA |
192 | } |
193 | } | |
194 | ||
2594e906 NA |
195 | /* This is the shared VLAN add function which works for both ports and bridge |
196 | * devices. There are four possible calls to this function in terms of the | |
197 | * vlan entry type: | |
198 | * 1. vlan is being added on a port (no master flags, global entry exists) | |
ddd611d3 | 199 | * 2. vlan is being added on a bridge (both master and brentry flags) |
2594e906 | 200 | * 3. vlan is being added on a port, but a global entry didn't exist which |
ddd611d3 | 201 | * is being created right now (master flag set, brentry flag unset), the |
2594e906 | 202 | * global entry is used for global per-vlan features, but not for filtering |
ddd611d3 | 203 | * 4. same as 3 but with both master and brentry flags set so the entry |
2594e906 NA |
204 | * will be used for filtering in both the port and the bridge |
205 | */ | |
206 | static int __vlan_add(struct net_bridge_vlan *v, u16 flags) | |
243a2e63 | 207 | { |
2594e906 NA |
208 | struct net_bridge_vlan *masterv = NULL; |
209 | struct net_bridge_port *p = NULL; | |
6be144f6 | 210 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
211 | struct net_device *dev; |
212 | struct net_bridge *br; | |
213 | int err; | |
214 | ||
215 | if (br_vlan_is_master(v)) { | |
216 | br = v->br; | |
217 | dev = br->dev; | |
907b1e6e | 218 | vg = br_vlan_group(br); |
2594e906 NA |
219 | } else { |
220 | p = v->port; | |
221 | br = p->br; | |
222 | dev = p->dev; | |
907b1e6e | 223 | vg = nbp_vlan_group(p); |
2594e906 NA |
224 | } |
225 | ||
226 | if (p) { | |
2594e906 NA |
227 | /* Add VLAN to the device filter if it is supported. |
228 | * This ensures tagged traffic enters the bridge when | |
229 | * promiscuous mode is disabled by br_manage_promisc(). | |
230 | */ | |
231 | err = __vlan_vid_add(dev, br, v->vid, flags); | |
232 | if (err) | |
233 | goto out; | |
234 | ||
235 | /* need to work on the master vlan too */ | |
236 | if (flags & BRIDGE_VLAN_INFO_MASTER) { | |
2ffdf508 NA |
237 | err = br_vlan_add(br, v->vid, flags | |
238 | BRIDGE_VLAN_INFO_BRENTRY); | |
2594e906 NA |
239 | if (err) |
240 | goto out_filt; | |
241 | } | |
242 | ||
f8ed289f NA |
243 | masterv = br_vlan_get_master(br, v->vid); |
244 | if (!masterv) | |
245 | goto out_filt; | |
2594e906 | 246 | v->brvlan = masterv; |
6dada9b1 | 247 | v->stats = masterv->stats; |
2594e906 NA |
248 | } |
249 | ||
6be144f6 | 250 | /* Add the dev mac and count the vlan only if it's usable */ |
2594e906 NA |
251 | if (br_vlan_should_use(v)) { |
252 | err = br_fdb_insert(br, p, dev->dev_addr, v->vid); | |
253 | if (err) { | |
254 | br_err(br, "failed insert local address into bridge forwarding table\n"); | |
255 | goto out_filt; | |
256 | } | |
6be144f6 | 257 | vg->num_vlans++; |
2594e906 NA |
258 | } |
259 | ||
6be144f6 NA |
260 | err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode, |
261 | br_vlan_rht_params); | |
2594e906 NA |
262 | if (err) |
263 | goto out_fdb_insert; | |
243a2e63 | 264 | |
2594e906 NA |
265 | __vlan_add_list(v); |
266 | __vlan_add_flags(v, flags); | |
2594e906 NA |
267 | out: |
268 | return err; | |
269 | ||
270 | out_fdb_insert: | |
6be144f6 NA |
271 | if (br_vlan_should_use(v)) { |
272 | br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid); | |
273 | vg->num_vlans--; | |
274 | } | |
2594e906 NA |
275 | |
276 | out_filt: | |
277 | if (p) { | |
278 | __vlan_vid_del(dev, br, v->vid); | |
279 | if (masterv) { | |
f8ed289f | 280 | br_vlan_put_master(masterv); |
2594e906 NA |
281 | v->brvlan = NULL; |
282 | } | |
283 | } | |
284 | ||
285 | goto out; | |
286 | } | |
287 | ||
288 | static int __vlan_del(struct net_bridge_vlan *v) | |
289 | { | |
290 | struct net_bridge_vlan *masterv = v; | |
77751ee8 | 291 | struct net_bridge_vlan_group *vg; |
2594e906 | 292 | struct net_bridge_port *p = NULL; |
2594e906 | 293 | int err = 0; |
552406c4 | 294 | |
2594e906 | 295 | if (br_vlan_is_master(v)) { |
907b1e6e | 296 | vg = br_vlan_group(v->br); |
2594e906 NA |
297 | } else { |
298 | p = v->port; | |
907b1e6e | 299 | vg = nbp_vlan_group(v->port); |
2594e906 | 300 | masterv = v->brvlan; |
2594e906 | 301 | } |
bf361ad3 | 302 | |
77751ee8 | 303 | __vlan_delete_pvid(vg, v->vid); |
2594e906 NA |
304 | if (p) { |
305 | err = __vlan_vid_del(p->dev, p->br, v->vid); | |
bf361ad3 | 306 | if (err) |
2594e906 | 307 | goto out; |
8580e211 | 308 | } |
243a2e63 | 309 | |
6be144f6 NA |
310 | if (br_vlan_should_use(v)) { |
311 | v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY; | |
312 | vg->num_vlans--; | |
2594e906 NA |
313 | } |
314 | ||
315 | if (masterv != v) { | |
efa5356b | 316 | vlan_tunnel_info_del(vg, v); |
77751ee8 NA |
317 | rhashtable_remove_fast(&vg->vlan_hash, &v->vnode, |
318 | br_vlan_rht_params); | |
2594e906 | 319 | __vlan_del_list(v); |
243a2e63 VY |
320 | kfree_rcu(v, rcu); |
321 | } | |
2594e906 | 322 | |
f8ed289f | 323 | br_vlan_put_master(masterv); |
2594e906 NA |
324 | out: |
325 | return err; | |
243a2e63 VY |
326 | } |
327 | ||
f409d0ed NA |
328 | static void __vlan_group_free(struct net_bridge_vlan_group *vg) |
329 | { | |
330 | WARN_ON(!list_empty(&vg->vlan_list)); | |
331 | rhashtable_destroy(&vg->vlan_hash); | |
efa5356b | 332 | vlan_tunnel_deinit(vg); |
f409d0ed NA |
333 | kfree(vg); |
334 | } | |
335 | ||
336 | static void __vlan_flush(struct net_bridge_vlan_group *vg) | |
243a2e63 | 337 | { |
2594e906 NA |
338 | struct net_bridge_vlan *vlan, *tmp; |
339 | ||
f409d0ed NA |
340 | __vlan_delete_pvid(vg, vg->pvid); |
341 | list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist) | |
2594e906 | 342 | __vlan_del(vlan); |
243a2e63 VY |
343 | } |
344 | ||
78851988 | 345 | struct sk_buff *br_handle_vlan(struct net_bridge *br, |
11538d03 | 346 | const struct net_bridge_port *p, |
2594e906 | 347 | struct net_bridge_vlan_group *vg, |
78851988 | 348 | struct sk_buff *skb) |
a37b85c9 | 349 | { |
6dada9b1 | 350 | struct br_vlan_stats *stats; |
2594e906 | 351 | struct net_bridge_vlan *v; |
a37b85c9 VY |
352 | u16 vid; |
353 | ||
20adfa1a VY |
354 | /* If this packet was not filtered at input, let it pass */ |
355 | if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) | |
78851988 VY |
356 | goto out; |
357 | ||
2594e906 NA |
358 | /* At this point, we know that the frame was filtered and contains |
359 | * a valid vlan id. If the vlan id has untagged flag set, | |
360 | * send untagged; otherwise, send tagged. | |
361 | */ | |
362 | br_vlan_get_tag(skb, &vid); | |
363 | v = br_vlan_find(vg, vid); | |
364 | /* Vlan entry must be configured at this point. The | |
fc92f745 VY |
365 | * only exception is the bridge is set in promisc mode and the |
366 | * packet is destined for the bridge device. In this case | |
367 | * pass the packet as is. | |
368 | */ | |
2594e906 | 369 | if (!v || !br_vlan_should_use(v)) { |
fc92f745 VY |
370 | if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) { |
371 | goto out; | |
372 | } else { | |
373 | kfree_skb(skb); | |
374 | return NULL; | |
375 | } | |
376 | } | |
6dada9b1 NA |
377 | if (br->vlan_stats_enabled) { |
378 | stats = this_cpu_ptr(v->stats); | |
379 | u64_stats_update_begin(&stats->syncp); | |
380 | stats->tx_bytes += skb->len; | |
381 | stats->tx_packets++; | |
382 | u64_stats_update_end(&stats->syncp); | |
383 | } | |
384 | ||
2594e906 | 385 | if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
99b192da | 386 | skb->vlan_tci = 0; |
11538d03 RP |
387 | |
388 | if (p && (p->flags & BR_VLAN_TUNNEL) && | |
389 | br_handle_egress_vlan_tunnel(skb, v)) { | |
390 | kfree_skb(skb); | |
391 | return NULL; | |
392 | } | |
78851988 VY |
393 | out: |
394 | return skb; | |
395 | } | |
396 | ||
397 | /* Called under RCU */ | |
6dada9b1 NA |
398 | static bool __allowed_ingress(const struct net_bridge *br, |
399 | struct net_bridge_vlan_group *vg, | |
2594e906 | 400 | struct sk_buff *skb, u16 *vid) |
78851988 | 401 | { |
6dada9b1 NA |
402 | struct br_vlan_stats *stats; |
403 | struct net_bridge_vlan *v; | |
8580e211 | 404 | bool tagged; |
a37b85c9 | 405 | |
20adfa1a | 406 | BR_INPUT_SKB_CB(skb)->vlan_filtered = true; |
12464bb8 TM |
407 | /* If vlan tx offload is disabled on bridge device and frame was |
408 | * sent from vlan device on the bridge device, it does not have | |
409 | * HW accelerated vlan tag. | |
410 | */ | |
df8a39de | 411 | if (unlikely(!skb_vlan_tag_present(skb) && |
6dada9b1 | 412 | skb->protocol == br->vlan_proto)) { |
0d5501c1 | 413 | skb = skb_vlan_untag(skb); |
12464bb8 TM |
414 | if (unlikely(!skb)) |
415 | return false; | |
416 | } | |
417 | ||
8580e211 TM |
418 | if (!br_vlan_get_tag(skb, vid)) { |
419 | /* Tagged frame */ | |
6dada9b1 | 420 | if (skb->vlan_proto != br->vlan_proto) { |
8580e211 TM |
421 | /* Protocol-mismatch, empty out vlan_tci for new tag */ |
422 | skb_push(skb, ETH_HLEN); | |
62749e2c | 423 | skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto, |
df8a39de | 424 | skb_vlan_tag_get(skb)); |
8580e211 TM |
425 | if (unlikely(!skb)) |
426 | return false; | |
427 | ||
428 | skb_pull(skb, ETH_HLEN); | |
429 | skb_reset_mac_len(skb); | |
430 | *vid = 0; | |
431 | tagged = false; | |
432 | } else { | |
433 | tagged = true; | |
434 | } | |
435 | } else { | |
436 | /* Untagged frame */ | |
437 | tagged = false; | |
438 | } | |
439 | ||
b90356ce | 440 | if (!*vid) { |
77751ee8 NA |
441 | u16 pvid = br_get_pvid(vg); |
442 | ||
b90356ce TM |
443 | /* Frame had a tag with VID 0 or did not have a tag. |
444 | * See if pvid is set on this port. That tells us which | |
445 | * vlan untagged or priority-tagged traffic belongs to. | |
78851988 | 446 | */ |
3df6bf45 | 447 | if (!pvid) |
eb707618 | 448 | goto drop; |
78851988 | 449 | |
b90356ce TM |
450 | /* PVID is set on this port. Any untagged or priority-tagged |
451 | * ingress frame is considered to belong to this vlan. | |
78851988 | 452 | */ |
dfb5fa32 | 453 | *vid = pvid; |
8580e211 | 454 | if (likely(!tagged)) |
b90356ce | 455 | /* Untagged Frame. */ |
6dada9b1 | 456 | __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid); |
b90356ce TM |
457 | else |
458 | /* Priority-tagged Frame. | |
459 | * At this point, We know that skb->vlan_tci had | |
460 | * VLAN_TAG_PRESENT bit and its VID field was 0x000. | |
461 | * We update only VID field and preserve PCP field. | |
462 | */ | |
463 | skb->vlan_tci |= pvid; | |
464 | ||
6dada9b1 NA |
465 | /* if stats are disabled we can avoid the lookup */ |
466 | if (!br->vlan_stats_enabled) | |
467 | return true; | |
78851988 | 468 | } |
77751ee8 | 469 | v = br_vlan_find(vg, *vid); |
6dada9b1 NA |
470 | if (!v || !br_vlan_should_use(v)) |
471 | goto drop; | |
472 | ||
473 | if (br->vlan_stats_enabled) { | |
474 | stats = this_cpu_ptr(v->stats); | |
475 | u64_stats_update_begin(&stats->syncp); | |
476 | stats->rx_bytes += skb->len; | |
477 | stats->rx_packets++; | |
478 | u64_stats_update_end(&stats->syncp); | |
479 | } | |
480 | ||
481 | return true; | |
482 | ||
eb707618 TM |
483 | drop: |
484 | kfree_skb(skb); | |
a37b85c9 VY |
485 | return false; |
486 | } | |
487 | ||
77751ee8 NA |
488 | bool br_allowed_ingress(const struct net_bridge *br, |
489 | struct net_bridge_vlan_group *vg, struct sk_buff *skb, | |
490 | u16 *vid) | |
2594e906 NA |
491 | { |
492 | /* If VLAN filtering is disabled on the bridge, all packets are | |
493 | * permitted. | |
494 | */ | |
495 | if (!br->vlan_enabled) { | |
496 | BR_INPUT_SKB_CB(skb)->vlan_filtered = false; | |
497 | return true; | |
498 | } | |
499 | ||
6dada9b1 | 500 | return __allowed_ingress(br, vg, skb, vid); |
2594e906 NA |
501 | } |
502 | ||
85f46c6b | 503 | /* Called under RCU. */ |
2594e906 | 504 | bool br_allowed_egress(struct net_bridge_vlan_group *vg, |
85f46c6b VY |
505 | const struct sk_buff *skb) |
506 | { | |
2594e906 | 507 | const struct net_bridge_vlan *v; |
85f46c6b VY |
508 | u16 vid; |
509 | ||
20adfa1a VY |
510 | /* If this packet was not filtered at input, let it pass */ |
511 | if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) | |
85f46c6b VY |
512 | return true; |
513 | ||
85f46c6b | 514 | br_vlan_get_tag(skb, &vid); |
2594e906 NA |
515 | v = br_vlan_find(vg, vid); |
516 | if (v && br_vlan_should_use(v)) | |
85f46c6b VY |
517 | return true; |
518 | ||
519 | return false; | |
520 | } | |
521 | ||
e0d7968a TM |
522 | /* Called under RCU */ |
523 | bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) | |
524 | { | |
468e7944 | 525 | struct net_bridge_vlan_group *vg; |
e0d7968a | 526 | struct net_bridge *br = p->br; |
e0d7968a | 527 | |
20adfa1a | 528 | /* If filtering was disabled at input, let it pass. */ |
c095f248 | 529 | if (!br->vlan_enabled) |
e0d7968a TM |
530 | return true; |
531 | ||
eca1e006 | 532 | vg = nbp_vlan_group_rcu(p); |
468e7944 | 533 | if (!vg || !vg->num_vlans) |
e0d7968a TM |
534 | return false; |
535 | ||
8580e211 TM |
536 | if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto) |
537 | *vid = 0; | |
538 | ||
e0d7968a | 539 | if (!*vid) { |
77751ee8 | 540 | *vid = br_get_pvid(vg); |
3df6bf45 | 541 | if (!*vid) |
e0d7968a TM |
542 | return false; |
543 | ||
544 | return true; | |
545 | } | |
546 | ||
77751ee8 | 547 | if (br_vlan_find(vg, *vid)) |
e0d7968a TM |
548 | return true; |
549 | ||
550 | return false; | |
551 | } | |
552 | ||
8adff41c TM |
553 | /* Must be protected by RTNL. |
554 | * Must be called with vid in range from 1 to 4094 inclusive. | |
555 | */ | |
552406c4 | 556 | int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 | 557 | { |
907b1e6e | 558 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
559 | struct net_bridge_vlan *vlan; |
560 | int ret; | |
243a2e63 VY |
561 | |
562 | ASSERT_RTNL(); | |
563 | ||
907b1e6e NA |
564 | vg = br_vlan_group(br); |
565 | vlan = br_vlan_find(vg, vid); | |
2594e906 NA |
566 | if (vlan) { |
567 | if (!br_vlan_is_brentry(vlan)) { | |
568 | /* Trying to change flags of non-existent bridge vlan */ | |
569 | if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) | |
570 | return -EINVAL; | |
571 | /* It was only kept for port vlans, now make it real */ | |
572 | ret = br_fdb_insert(br, NULL, br->dev->dev_addr, | |
573 | vlan->vid); | |
574 | if (ret) { | |
575 | br_err(br, "failed insert local address into bridge forwarding table\n"); | |
576 | return ret; | |
577 | } | |
25127759 | 578 | refcount_inc(&vlan->refcnt); |
2594e906 | 579 | vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY; |
907b1e6e | 580 | vg->num_vlans++; |
2594e906 NA |
581 | } |
582 | __vlan_add_flags(vlan, flags); | |
583 | return 0; | |
584 | } | |
243a2e63 | 585 | |
2594e906 NA |
586 | vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); |
587 | if (!vlan) | |
243a2e63 VY |
588 | return -ENOMEM; |
589 | ||
6dada9b1 NA |
590 | vlan->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats); |
591 | if (!vlan->stats) { | |
592 | kfree(vlan); | |
593 | return -ENOMEM; | |
594 | } | |
2594e906 NA |
595 | vlan->vid = vid; |
596 | vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER; | |
597 | vlan->flags &= ~BRIDGE_VLAN_INFO_PVID; | |
598 | vlan->br = br; | |
599 | if (flags & BRIDGE_VLAN_INFO_BRENTRY) | |
25127759 | 600 | refcount_set(&vlan->refcnt, 1); |
2594e906 | 601 | ret = __vlan_add(vlan, flags); |
6dada9b1 NA |
602 | if (ret) { |
603 | free_percpu(vlan->stats); | |
2594e906 | 604 | kfree(vlan); |
6dada9b1 | 605 | } |
243a2e63 | 606 | |
2594e906 | 607 | return ret; |
243a2e63 VY |
608 | } |
609 | ||
8adff41c TM |
610 | /* Must be protected by RTNL. |
611 | * Must be called with vid in range from 1 to 4094 inclusive. | |
612 | */ | |
243a2e63 VY |
613 | int br_vlan_delete(struct net_bridge *br, u16 vid) |
614 | { | |
907b1e6e | 615 | struct net_bridge_vlan_group *vg; |
2594e906 | 616 | struct net_bridge_vlan *v; |
243a2e63 VY |
617 | |
618 | ASSERT_RTNL(); | |
619 | ||
907b1e6e NA |
620 | vg = br_vlan_group(br); |
621 | v = br_vlan_find(vg, vid); | |
2594e906 NA |
622 | if (!v || !br_vlan_is_brentry(v)) |
623 | return -ENOENT; | |
243a2e63 | 624 | |
424bb9c9 | 625 | br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); |
3741873b | 626 | br_fdb_delete_by_port(br, NULL, vid, 0); |
bc9a25d2 | 627 | |
efa5356b RP |
628 | vlan_tunnel_info_del(vg, v); |
629 | ||
2594e906 | 630 | return __vlan_del(v); |
243a2e63 VY |
631 | } |
632 | ||
633 | void br_vlan_flush(struct net_bridge *br) | |
634 | { | |
f409d0ed NA |
635 | struct net_bridge_vlan_group *vg; |
636 | ||
243a2e63 | 637 | ASSERT_RTNL(); |
243a2e63 | 638 | |
f409d0ed NA |
639 | vg = br_vlan_group(br); |
640 | __vlan_flush(vg); | |
641 | RCU_INIT_POINTER(br->vlgrp, NULL); | |
642 | synchronize_rcu(); | |
643 | __vlan_group_free(vg); | |
243a2e63 VY |
644 | } |
645 | ||
2594e906 | 646 | struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid) |
2b292fb4 | 647 | { |
2594e906 NA |
648 | if (!vg) |
649 | return NULL; | |
2b292fb4 | 650 | |
2594e906 | 651 | return br_vlan_lookup(&vg->vlan_hash, vid); |
2b292fb4 TM |
652 | } |
653 | ||
204177f3 TM |
654 | /* Must be protected by RTNL. */ |
655 | static void recalculate_group_addr(struct net_bridge *br) | |
656 | { | |
657 | if (br->group_addr_set) | |
658 | return; | |
659 | ||
660 | spin_lock_bh(&br->lock); | |
661 | if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) { | |
662 | /* Bridge Group Address */ | |
663 | br->group_addr[5] = 0x00; | |
664 | } else { /* vlan_enabled && ETH_P_8021AD */ | |
665 | /* Provider Bridge Group Address */ | |
666 | br->group_addr[5] = 0x08; | |
667 | } | |
668 | spin_unlock_bh(&br->lock); | |
669 | } | |
670 | ||
671 | /* Must be protected by RTNL. */ | |
672 | void br_recalculate_fwd_mask(struct net_bridge *br) | |
673 | { | |
674 | if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) | |
675 | br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; | |
676 | else /* vlan_enabled && ETH_P_8021AD */ | |
677 | br->group_fwd_mask_required = BR_GROUPFWD_8021AD & | |
678 | ~(1u << br->group_addr[5]); | |
679 | } | |
680 | ||
a7854037 | 681 | int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) |
243a2e63 | 682 | { |
6b72a770 ER |
683 | struct switchdev_attr attr = { |
684 | .orig_dev = br->dev, | |
685 | .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, | |
686 | .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, | |
687 | .u.vlan_filtering = val, | |
688 | }; | |
689 | int err; | |
690 | ||
243a2e63 | 691 | if (br->vlan_enabled == val) |
a7854037 | 692 | return 0; |
243a2e63 | 693 | |
6b72a770 ER |
694 | err = switchdev_port_attr_set(br->dev, &attr); |
695 | if (err && err != -EOPNOTSUPP) | |
696 | return err; | |
697 | ||
243a2e63 | 698 | br->vlan_enabled = val; |
2796d0c6 | 699 | br_manage_promisc(br); |
204177f3 TM |
700 | recalculate_group_addr(br); |
701 | br_recalculate_fwd_mask(br); | |
243a2e63 | 702 | |
a7854037 NA |
703 | return 0; |
704 | } | |
705 | ||
706 | int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) | |
707 | { | |
047831a9 | 708 | return __br_vlan_filter_toggle(br, val); |
243a2e63 VY |
709 | } |
710 | ||
1f51445a IS |
711 | bool br_vlan_enabled(const struct net_device *dev) |
712 | { | |
713 | struct net_bridge *br = netdev_priv(dev); | |
714 | ||
715 | return !!br->vlan_enabled; | |
716 | } | |
717 | EXPORT_SYMBOL_GPL(br_vlan_enabled); | |
718 | ||
d2d427b3 | 719 | int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) |
204177f3 TM |
720 | { |
721 | int err = 0; | |
722 | struct net_bridge_port *p; | |
2594e906 | 723 | struct net_bridge_vlan *vlan; |
907b1e6e | 724 | struct net_bridge_vlan_group *vg; |
d2d427b3 | 725 | __be16 oldproto; |
204177f3 | 726 | |
204177f3 | 727 | if (br->vlan_proto == proto) |
d2d427b3 | 728 | return 0; |
204177f3 TM |
729 | |
730 | /* Add VLANs for the new proto to the device filter. */ | |
731 | list_for_each_entry(p, &br->port_list, list) { | |
907b1e6e NA |
732 | vg = nbp_vlan_group(p); |
733 | list_for_each_entry(vlan, &vg->vlan_list, vlist) { | |
2594e906 | 734 | err = vlan_vid_add(p->dev, proto, vlan->vid); |
204177f3 TM |
735 | if (err) |
736 | goto err_filt; | |
737 | } | |
738 | } | |
739 | ||
740 | oldproto = br->vlan_proto; | |
741 | br->vlan_proto = proto; | |
742 | ||
743 | recalculate_group_addr(br); | |
744 | br_recalculate_fwd_mask(br); | |
745 | ||
746 | /* Delete VLANs for the old proto from the device filter. */ | |
907b1e6e NA |
747 | list_for_each_entry(p, &br->port_list, list) { |
748 | vg = nbp_vlan_group(p); | |
749 | list_for_each_entry(vlan, &vg->vlan_list, vlist) | |
2594e906 | 750 | vlan_vid_del(p->dev, oldproto, vlan->vid); |
907b1e6e | 751 | } |
204177f3 | 752 | |
d2d427b3 | 753 | return 0; |
204177f3 TM |
754 | |
755 | err_filt: | |
907b1e6e | 756 | list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) |
2594e906 | 757 | vlan_vid_del(p->dev, proto, vlan->vid); |
204177f3 | 758 | |
907b1e6e NA |
759 | list_for_each_entry_continue_reverse(p, &br->port_list, list) { |
760 | vg = nbp_vlan_group(p); | |
761 | list_for_each_entry(vlan, &vg->vlan_list, vlist) | |
2594e906 | 762 | vlan_vid_del(p->dev, proto, vlan->vid); |
907b1e6e | 763 | } |
204177f3 | 764 | |
d2d427b3 TM |
765 | return err; |
766 | } | |
767 | ||
768 | int br_vlan_set_proto(struct net_bridge *br, unsigned long val) | |
769 | { | |
d2d427b3 TM |
770 | if (val != ETH_P_8021Q && val != ETH_P_8021AD) |
771 | return -EPROTONOSUPPORT; | |
772 | ||
047831a9 | 773 | return __br_vlan_set_proto(br, htons(val)); |
204177f3 TM |
774 | } |
775 | ||
6dada9b1 NA |
776 | int br_vlan_set_stats(struct net_bridge *br, unsigned long val) |
777 | { | |
778 | switch (val) { | |
779 | case 0: | |
780 | case 1: | |
781 | br->vlan_stats_enabled = val; | |
782 | break; | |
783 | default: | |
784 | return -EINVAL; | |
785 | } | |
786 | ||
787 | return 0; | |
788 | } | |
789 | ||
77751ee8 | 790 | static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid) |
5be5a2df | 791 | { |
2594e906 NA |
792 | struct net_bridge_vlan *v; |
793 | ||
77751ee8 | 794 | if (vid != vg->pvid) |
2594e906 NA |
795 | return false; |
796 | ||
797 | v = br_vlan_lookup(&vg->vlan_hash, vid); | |
798 | if (v && br_vlan_should_use(v) && | |
799 | (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) | |
800 | return true; | |
801 | ||
802 | return false; | |
5be5a2df VY |
803 | } |
804 | ||
805 | static void br_vlan_disable_default_pvid(struct net_bridge *br) | |
806 | { | |
807 | struct net_bridge_port *p; | |
808 | u16 pvid = br->default_pvid; | |
809 | ||
810 | /* Disable default_pvid on all ports where it is still | |
811 | * configured. | |
812 | */ | |
907b1e6e | 813 | if (vlan_default_pvid(br_vlan_group(br), pvid)) |
5be5a2df VY |
814 | br_vlan_delete(br, pvid); |
815 | ||
816 | list_for_each_entry(p, &br->port_list, list) { | |
907b1e6e | 817 | if (vlan_default_pvid(nbp_vlan_group(p), pvid)) |
5be5a2df VY |
818 | nbp_vlan_delete(p, pvid); |
819 | } | |
820 | ||
821 | br->default_pvid = 0; | |
822 | } | |
823 | ||
0f963b75 | 824 | int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid) |
5be5a2df | 825 | { |
2594e906 | 826 | const struct net_bridge_vlan *pvent; |
907b1e6e | 827 | struct net_bridge_vlan_group *vg; |
5be5a2df VY |
828 | struct net_bridge_port *p; |
829 | u16 old_pvid; | |
830 | int err = 0; | |
831 | unsigned long *changed; | |
832 | ||
0f963b75 NA |
833 | if (!pvid) { |
834 | br_vlan_disable_default_pvid(br); | |
835 | return 0; | |
836 | } | |
837 | ||
5be5a2df VY |
838 | changed = kcalloc(BITS_TO_LONGS(BR_MAX_PORTS), sizeof(unsigned long), |
839 | GFP_KERNEL); | |
840 | if (!changed) | |
841 | return -ENOMEM; | |
842 | ||
843 | old_pvid = br->default_pvid; | |
844 | ||
845 | /* Update default_pvid config only if we do not conflict with | |
846 | * user configuration. | |
847 | */ | |
907b1e6e NA |
848 | vg = br_vlan_group(br); |
849 | pvent = br_vlan_find(vg, pvid); | |
850 | if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) && | |
2594e906 | 851 | (!pvent || !br_vlan_should_use(pvent))) { |
5be5a2df VY |
852 | err = br_vlan_add(br, pvid, |
853 | BRIDGE_VLAN_INFO_PVID | | |
2594e906 NA |
854 | BRIDGE_VLAN_INFO_UNTAGGED | |
855 | BRIDGE_VLAN_INFO_BRENTRY); | |
5be5a2df VY |
856 | if (err) |
857 | goto out; | |
858 | br_vlan_delete(br, old_pvid); | |
859 | set_bit(0, changed); | |
860 | } | |
861 | ||
862 | list_for_each_entry(p, &br->port_list, list) { | |
863 | /* Update default_pvid config only if we do not conflict with | |
864 | * user configuration. | |
865 | */ | |
907b1e6e | 866 | vg = nbp_vlan_group(p); |
5be5a2df | 867 | if ((old_pvid && |
907b1e6e NA |
868 | !vlan_default_pvid(vg, old_pvid)) || |
869 | br_vlan_find(vg, pvid)) | |
5be5a2df VY |
870 | continue; |
871 | ||
872 | err = nbp_vlan_add(p, pvid, | |
873 | BRIDGE_VLAN_INFO_PVID | | |
874 | BRIDGE_VLAN_INFO_UNTAGGED); | |
875 | if (err) | |
876 | goto err_port; | |
877 | nbp_vlan_delete(p, old_pvid); | |
878 | set_bit(p->port_no, changed); | |
879 | } | |
880 | ||
881 | br->default_pvid = pvid; | |
882 | ||
883 | out: | |
884 | kfree(changed); | |
885 | return err; | |
886 | ||
887 | err_port: | |
888 | list_for_each_entry_continue_reverse(p, &br->port_list, list) { | |
889 | if (!test_bit(p->port_no, changed)) | |
890 | continue; | |
891 | ||
892 | if (old_pvid) | |
893 | nbp_vlan_add(p, old_pvid, | |
894 | BRIDGE_VLAN_INFO_PVID | | |
895 | BRIDGE_VLAN_INFO_UNTAGGED); | |
896 | nbp_vlan_delete(p, pvid); | |
897 | } | |
898 | ||
899 | if (test_bit(0, changed)) { | |
900 | if (old_pvid) | |
901 | br_vlan_add(br, old_pvid, | |
902 | BRIDGE_VLAN_INFO_PVID | | |
2594e906 NA |
903 | BRIDGE_VLAN_INFO_UNTAGGED | |
904 | BRIDGE_VLAN_INFO_BRENTRY); | |
5be5a2df VY |
905 | br_vlan_delete(br, pvid); |
906 | } | |
907 | goto out; | |
908 | } | |
909 | ||
96a20d9d VY |
910 | int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val) |
911 | { | |
912 | u16 pvid = val; | |
913 | int err = 0; | |
914 | ||
5be5a2df | 915 | if (val >= VLAN_VID_MASK) |
96a20d9d VY |
916 | return -EINVAL; |
917 | ||
96a20d9d | 918 | if (pvid == br->default_pvid) |
047831a9 | 919 | goto out; |
96a20d9d VY |
920 | |
921 | /* Only allow default pvid change when filtering is disabled */ | |
922 | if (br->vlan_enabled) { | |
923 | pr_info_once("Please disable vlan filtering to change default_pvid\n"); | |
924 | err = -EPERM; | |
047831a9 | 925 | goto out; |
96a20d9d | 926 | } |
0f963b75 | 927 | err = __br_vlan_set_default_pvid(br, pvid); |
047831a9 | 928 | out: |
96a20d9d VY |
929 | return err; |
930 | } | |
931 | ||
5be5a2df | 932 | int br_vlan_init(struct net_bridge *br) |
8580e211 | 933 | { |
907b1e6e | 934 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
935 | int ret = -ENOMEM; |
936 | ||
907b1e6e NA |
937 | vg = kzalloc(sizeof(*vg), GFP_KERNEL); |
938 | if (!vg) | |
2594e906 | 939 | goto out; |
907b1e6e | 940 | ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); |
2594e906 NA |
941 | if (ret) |
942 | goto err_rhtbl; | |
efa5356b RP |
943 | ret = vlan_tunnel_init(vg); |
944 | if (ret) | |
945 | goto err_tunnel_init; | |
907b1e6e | 946 | INIT_LIST_HEAD(&vg->vlan_list); |
8580e211 | 947 | br->vlan_proto = htons(ETH_P_8021Q); |
96a20d9d | 948 | br->default_pvid = 1; |
907b1e6e | 949 | rcu_assign_pointer(br->vlgrp, vg); |
2594e906 NA |
950 | ret = br_vlan_add(br, 1, |
951 | BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED | | |
952 | BRIDGE_VLAN_INFO_BRENTRY); | |
953 | if (ret) | |
954 | goto err_vlan_add; | |
955 | ||
956 | out: | |
957 | return ret; | |
958 | ||
959 | err_vlan_add: | |
efa5356b RP |
960 | vlan_tunnel_deinit(vg); |
961 | err_tunnel_init: | |
907b1e6e | 962 | rhashtable_destroy(&vg->vlan_hash); |
2594e906 | 963 | err_rhtbl: |
907b1e6e | 964 | kfree(vg); |
2594e906 NA |
965 | |
966 | goto out; | |
967 | } | |
968 | ||
969 | int nbp_vlan_init(struct net_bridge_port *p) | |
970 | { | |
404cdbf0 ER |
971 | struct switchdev_attr attr = { |
972 | .orig_dev = p->br->dev, | |
973 | .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, | |
974 | .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, | |
975 | .u.vlan_filtering = p->br->vlan_enabled, | |
976 | }; | |
263344e6 | 977 | struct net_bridge_vlan_group *vg; |
2594e906 NA |
978 | int ret = -ENOMEM; |
979 | ||
263344e6 NA |
980 | vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); |
981 | if (!vg) | |
2594e906 NA |
982 | goto out; |
983 | ||
404cdbf0 ER |
984 | ret = switchdev_port_attr_set(p->dev, &attr); |
985 | if (ret && ret != -EOPNOTSUPP) | |
986 | goto err_vlan_enabled; | |
987 | ||
263344e6 | 988 | ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); |
2594e906 NA |
989 | if (ret) |
990 | goto err_rhtbl; | |
efa5356b RP |
991 | ret = vlan_tunnel_init(vg); |
992 | if (ret) | |
993 | goto err_tunnel_init; | |
263344e6 | 994 | INIT_LIST_HEAD(&vg->vlan_list); |
907b1e6e | 995 | rcu_assign_pointer(p->vlgrp, vg); |
2594e906 NA |
996 | if (p->br->default_pvid) { |
997 | ret = nbp_vlan_add(p, p->br->default_pvid, | |
998 | BRIDGE_VLAN_INFO_PVID | | |
999 | BRIDGE_VLAN_INFO_UNTAGGED); | |
1000 | if (ret) | |
1001 | goto err_vlan_add; | |
1002 | } | |
1003 | out: | |
1004 | return ret; | |
1005 | ||
1006 | err_vlan_add: | |
07bc588f IS |
1007 | RCU_INIT_POINTER(p->vlgrp, NULL); |
1008 | synchronize_rcu(); | |
efa5356b | 1009 | vlan_tunnel_deinit(vg); |
efa5356b RP |
1010 | err_tunnel_init: |
1011 | rhashtable_destroy(&vg->vlan_hash); | |
2594e906 | 1012 | err_rhtbl: |
df2c4334 | 1013 | err_vlan_enabled: |
263344e6 | 1014 | kfree(vg); |
2594e906 NA |
1015 | |
1016 | goto out; | |
8580e211 TM |
1017 | } |
1018 | ||
8adff41c TM |
1019 | /* Must be protected by RTNL. |
1020 | * Must be called with vid in range from 1 to 4094 inclusive. | |
1021 | */ | |
552406c4 | 1022 | int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 | 1023 | { |
7fbac984 IS |
1024 | struct switchdev_obj_port_vlan v = { |
1025 | .obj.orig_dev = port->dev, | |
1026 | .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, | |
1027 | .flags = flags, | |
1028 | .vid_begin = vid, | |
1029 | .vid_end = vid, | |
1030 | }; | |
2594e906 NA |
1031 | struct net_bridge_vlan *vlan; |
1032 | int ret; | |
243a2e63 VY |
1033 | |
1034 | ASSERT_RTNL(); | |
1035 | ||
907b1e6e | 1036 | vlan = br_vlan_find(nbp_vlan_group(port), vid); |
2594e906 | 1037 | if (vlan) { |
7fbac984 IS |
1038 | /* Pass the flags to the hardware bridge */ |
1039 | ret = switchdev_port_obj_add(port->dev, &v.obj); | |
1040 | if (ret && ret != -EOPNOTSUPP) | |
1041 | return ret; | |
2594e906 NA |
1042 | __vlan_add_flags(vlan, flags); |
1043 | return 0; | |
243a2e63 VY |
1044 | } |
1045 | ||
2594e906 NA |
1046 | vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); |
1047 | if (!vlan) | |
1048 | return -ENOMEM; | |
243a2e63 | 1049 | |
2594e906 NA |
1050 | vlan->vid = vid; |
1051 | vlan->port = port; | |
1052 | ret = __vlan_add(vlan, flags); | |
1053 | if (ret) | |
1054 | kfree(vlan); | |
243a2e63 | 1055 | |
2594e906 | 1056 | return ret; |
243a2e63 VY |
1057 | } |
1058 | ||
8adff41c TM |
1059 | /* Must be protected by RTNL. |
1060 | * Must be called with vid in range from 1 to 4094 inclusive. | |
1061 | */ | |
243a2e63 VY |
1062 | int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) |
1063 | { | |
2594e906 | 1064 | struct net_bridge_vlan *v; |
243a2e63 VY |
1065 | |
1066 | ASSERT_RTNL(); | |
1067 | ||
907b1e6e | 1068 | v = br_vlan_find(nbp_vlan_group(port), vid); |
2594e906 NA |
1069 | if (!v) |
1070 | return -ENOENT; | |
424bb9c9 | 1071 | br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); |
1ea2d020 | 1072 | br_fdb_delete_by_port(port->br, port, vid, 0); |
bc9a25d2 | 1073 | |
2594e906 | 1074 | return __vlan_del(v); |
243a2e63 VY |
1075 | } |
1076 | ||
1077 | void nbp_vlan_flush(struct net_bridge_port *port) | |
1078 | { | |
f409d0ed NA |
1079 | struct net_bridge_vlan_group *vg; |
1080 | ||
243a2e63 VY |
1081 | ASSERT_RTNL(); |
1082 | ||
f409d0ed NA |
1083 | vg = nbp_vlan_group(port); |
1084 | __vlan_flush(vg); | |
1085 | RCU_INIT_POINTER(port->vlgrp, NULL); | |
1086 | synchronize_rcu(); | |
1087 | __vlan_group_free(vg); | |
5be5a2df | 1088 | } |
a60c0903 NA |
1089 | |
1090 | void br_vlan_get_stats(const struct net_bridge_vlan *v, | |
1091 | struct br_vlan_stats *stats) | |
1092 | { | |
1093 | int i; | |
1094 | ||
1095 | memset(stats, 0, sizeof(*stats)); | |
1096 | for_each_possible_cpu(i) { | |
1097 | u64 rxpackets, rxbytes, txpackets, txbytes; | |
1098 | struct br_vlan_stats *cpu_stats; | |
1099 | unsigned int start; | |
1100 | ||
1101 | cpu_stats = per_cpu_ptr(v->stats, i); | |
1102 | do { | |
1103 | start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); | |
1104 | rxpackets = cpu_stats->rx_packets; | |
1105 | rxbytes = cpu_stats->rx_bytes; | |
1106 | txbytes = cpu_stats->tx_bytes; | |
1107 | txpackets = cpu_stats->tx_packets; | |
1108 | } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); | |
1109 | ||
1110 | stats->rx_packets += rxpackets; | |
1111 | stats->rx_bytes += rxbytes; | |
1112 | stats->tx_bytes += txbytes; | |
1113 | stats->tx_packets += txpackets; | |
1114 | } | |
1115 | } |