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