Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
b863ceb7 PM |
2 | /* |
3 | * Copyright (c) 2007 Patrick McHardy <kaber@trash.net> | |
4 | * | |
b863ceb7 PM |
5 | * The code this is based on carried the following copyright notice: |
6 | * --- | |
7 | * (C) Copyright 2001-2006 | |
8 | * Alex Zeffertt, Cambridge Broadband Ltd, ajz@cambridgebroadband.com | |
9 | * Re-worked by Ben Greear <greearb@candelatech.com> | |
10 | * --- | |
11 | */ | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/types.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/errno.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/string.h> | |
82524746 | 19 | #include <linux/rculist.h> |
b863ceb7 PM |
20 | #include <linux/notifier.h> |
21 | #include <linux/netdevice.h> | |
22 | #include <linux/etherdevice.h> | |
254c0a2b | 23 | #include <linux/net_tstamp.h> |
b863ceb7 PM |
24 | #include <linux/ethtool.h> |
25 | #include <linux/if_arp.h> | |
87002b03 | 26 | #include <linux/if_vlan.h> |
b863ceb7 PM |
27 | #include <linux/if_link.h> |
28 | #include <linux/if_macvlan.h> | |
cd431e73 | 29 | #include <linux/hash.h> |
412ca155 | 30 | #include <linux/workqueue.h> |
b863ceb7 | 31 | #include <net/rtnetlink.h> |
618e1b74 | 32 | #include <net/xfrm.h> |
688cea83 | 33 | #include <linux/netpoll.h> |
254c0a2b | 34 | #include <linux/phy.h> |
b863ceb7 | 35 | |
79cf79ab MB |
36 | #define MACVLAN_HASH_BITS 8 |
37 | #define MACVLAN_HASH_SIZE (1<<MACVLAN_HASH_BITS) | |
d4bff72c | 38 | #define MACVLAN_DEFAULT_BC_QUEUE_LEN 1000 |
b863ceb7 | 39 | |
43c2d578 | 40 | #define MACVLAN_F_PASSTHRU 1 |
18c8c54d | 41 | #define MACVLAN_F_ADDRCHANGE 2 |
43c2d578 | 42 | |
b863ceb7 PM |
43 | struct macvlan_port { |
44 | struct net_device *dev; | |
45 | struct hlist_head vlan_hash[MACVLAN_HASH_SIZE]; | |
46 | struct list_head vlans; | |
412ca155 HX |
47 | struct sk_buff_head bc_queue; |
48 | struct work_struct bc_work; | |
d4bff72c | 49 | u32 bc_queue_len_used; |
43c2d578 | 50 | u32 flags; |
5e3c516b | 51 | int count; |
79cf79ab | 52 | struct hlist_head vlan_source_hash[MACVLAN_HASH_SIZE]; |
9c127a01 | 53 | DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ); |
18c8c54d | 54 | unsigned char perm_addr[ETH_ALEN]; |
79cf79ab MB |
55 | }; |
56 | ||
57 | struct macvlan_source_entry { | |
58 | struct hlist_node hlist; | |
59 | struct macvlan_dev *vlan; | |
60 | unsigned char addr[6+2] __aligned(sizeof(u16)); | |
61 | struct rcu_head rcu; | |
b863ceb7 PM |
62 | }; |
63 | ||
412ca155 HX |
64 | struct macvlan_skb_cb { |
65 | const struct macvlan_dev *src; | |
66 | }; | |
67 | ||
68 | #define MACVLAN_SKB_CB(__skb) ((struct macvlan_skb_cb *)&((__skb)->cb[0])) | |
69 | ||
d5cd9244 | 70 | static void macvlan_port_destroy(struct net_device *dev); |
d4bff72c | 71 | static void update_port_bc_queue_len(struct macvlan_port *port); |
d5cd9244 | 72 | |
43c2d578 VY |
73 | static inline bool macvlan_passthru(const struct macvlan_port *port) |
74 | { | |
75 | return port->flags & MACVLAN_F_PASSTHRU; | |
76 | } | |
77 | ||
78 | static inline void macvlan_set_passthru(struct macvlan_port *port) | |
79 | { | |
80 | port->flags |= MACVLAN_F_PASSTHRU; | |
81 | } | |
82 | ||
18c8c54d VY |
83 | static inline bool macvlan_addr_change(const struct macvlan_port *port) |
84 | { | |
85 | return port->flags & MACVLAN_F_ADDRCHANGE; | |
86 | } | |
87 | ||
88 | static inline void macvlan_set_addr_change(struct macvlan_port *port) | |
89 | { | |
90 | port->flags |= MACVLAN_F_ADDRCHANGE; | |
91 | } | |
92 | ||
93 | static inline void macvlan_clear_addr_change(struct macvlan_port *port) | |
94 | { | |
95 | port->flags &= ~MACVLAN_F_ADDRCHANGE; | |
96 | } | |
97 | ||
79cf79ab MB |
98 | /* Hash Ethernet address */ |
99 | static u32 macvlan_eth_hash(const unsigned char *addr) | |
100 | { | |
101 | u64 value = get_unaligned((u64 *)addr); | |
102 | ||
103 | /* only want 6 bytes */ | |
104 | #ifdef __BIG_ENDIAN | |
105 | value >>= 16; | |
106 | #else | |
107 | value <<= 16; | |
108 | #endif | |
109 | return hash_64(value, MACVLAN_HASH_BITS); | |
110 | } | |
111 | ||
e052f7e6 ED |
112 | static struct macvlan_port *macvlan_port_get_rcu(const struct net_device *dev) |
113 | { | |
114 | return rcu_dereference(dev->rx_handler_data); | |
115 | } | |
116 | ||
117 | static struct macvlan_port *macvlan_port_get_rtnl(const struct net_device *dev) | |
118 | { | |
119 | return rtnl_dereference(dev->rx_handler_data); | |
120 | } | |
121 | ||
b863ceb7 PM |
122 | static struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, |
123 | const unsigned char *addr) | |
124 | { | |
125 | struct macvlan_dev *vlan; | |
79cf79ab | 126 | u32 idx = macvlan_eth_hash(addr); |
b863ceb7 | 127 | |
58e64a31 WY |
128 | hlist_for_each_entry_rcu(vlan, &port->vlan_hash[idx], hlist, |
129 | lockdep_rtnl_is_held()) { | |
a6700db1 | 130 | if (ether_addr_equal_64bits(vlan->dev->dev_addr, addr)) |
b863ceb7 PM |
131 | return vlan; |
132 | } | |
133 | return NULL; | |
134 | } | |
135 | ||
79cf79ab MB |
136 | static struct macvlan_source_entry *macvlan_hash_lookup_source( |
137 | const struct macvlan_dev *vlan, | |
138 | const unsigned char *addr) | |
139 | { | |
140 | struct macvlan_source_entry *entry; | |
141 | u32 idx = macvlan_eth_hash(addr); | |
142 | struct hlist_head *h = &vlan->port->vlan_source_hash[idx]; | |
143 | ||
5df1341e | 144 | hlist_for_each_entry_rcu(entry, h, hlist, lockdep_rtnl_is_held()) { |
79cf79ab MB |
145 | if (ether_addr_equal_64bits(entry->addr, addr) && |
146 | entry->vlan == vlan) | |
147 | return entry; | |
148 | } | |
149 | return NULL; | |
150 | } | |
151 | ||
152 | static int macvlan_hash_add_source(struct macvlan_dev *vlan, | |
153 | const unsigned char *addr) | |
154 | { | |
155 | struct macvlan_port *port = vlan->port; | |
156 | struct macvlan_source_entry *entry; | |
157 | struct hlist_head *h; | |
158 | ||
159 | entry = macvlan_hash_lookup_source(vlan, addr); | |
160 | if (entry) | |
161 | return 0; | |
162 | ||
163 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); | |
164 | if (!entry) | |
165 | return -ENOMEM; | |
166 | ||
167 | ether_addr_copy(entry->addr, addr); | |
168 | entry->vlan = vlan; | |
169 | h = &port->vlan_source_hash[macvlan_eth_hash(addr)]; | |
170 | hlist_add_head_rcu(&entry->hlist, h); | |
171 | vlan->macaddr_count++; | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
f9ac30f0 EB |
176 | static void macvlan_hash_add(struct macvlan_dev *vlan) |
177 | { | |
178 | struct macvlan_port *port = vlan->port; | |
179 | const unsigned char *addr = vlan->dev->dev_addr; | |
79cf79ab | 180 | u32 idx = macvlan_eth_hash(addr); |
f9ac30f0 | 181 | |
79cf79ab MB |
182 | hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[idx]); |
183 | } | |
184 | ||
185 | static void macvlan_hash_del_source(struct macvlan_source_entry *entry) | |
186 | { | |
187 | hlist_del_rcu(&entry->hlist); | |
188 | kfree_rcu(entry, rcu); | |
f9ac30f0 EB |
189 | } |
190 | ||
449f4544 | 191 | static void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) |
f9ac30f0 EB |
192 | { |
193 | hlist_del_rcu(&vlan->hlist); | |
449f4544 ED |
194 | if (sync) |
195 | synchronize_rcu(); | |
f9ac30f0 EB |
196 | } |
197 | ||
198 | static void macvlan_hash_change_addr(struct macvlan_dev *vlan, | |
199 | const unsigned char *addr) | |
200 | { | |
449f4544 | 201 | macvlan_hash_del(vlan, true); |
f9ac30f0 EB |
202 | /* Now that we are unhashed it is safe to change the device |
203 | * address without confusing packet delivery. | |
204 | */ | |
2f23e5ce | 205 | eth_hw_addr_set(vlan->dev, addr); |
f9ac30f0 EB |
206 | macvlan_hash_add(vlan); |
207 | } | |
208 | ||
d94d0254 GF |
209 | static bool macvlan_addr_busy(const struct macvlan_port *port, |
210 | const unsigned char *addr) | |
f9ac30f0 | 211 | { |
18c8c54d | 212 | /* Test to see if the specified address is |
f9ac30f0 EB |
213 | * currently in use by the underlying device or |
214 | * another macvlan. | |
215 | */ | |
18c8c54d | 216 | if (!macvlan_passthru(port) && !macvlan_addr_change(port) && |
e696cda7 | 217 | ether_addr_equal_64bits(port->dev->dev_addr, addr)) |
d94d0254 | 218 | return true; |
f9ac30f0 EB |
219 | |
220 | if (macvlan_hash_lookup(port, addr)) | |
d94d0254 | 221 | return true; |
f9ac30f0 | 222 | |
d94d0254 | 223 | return false; |
f9ac30f0 EB |
224 | } |
225 | ||
a1e514c5 | 226 | |
fc0663d6 AB |
227 | static int macvlan_broadcast_one(struct sk_buff *skb, |
228 | const struct macvlan_dev *vlan, | |
618e1b74 | 229 | const struct ethhdr *eth, bool local) |
a1e514c5 | 230 | { |
fc0663d6 | 231 | struct net_device *dev = vlan->dev; |
a1e514c5 | 232 | |
618e1b74 | 233 | if (local) |
412ca155 | 234 | return __dev_forward_skb(dev, skb); |
618e1b74 | 235 | |
a1e514c5 | 236 | skb->dev = dev; |
a6700db1 | 237 | if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast)) |
a1e514c5 AB |
238 | skb->pkt_type = PACKET_BROADCAST; |
239 | else | |
240 | skb->pkt_type = PACKET_MULTICAST; | |
241 | ||
412ca155 | 242 | return 0; |
a1e514c5 AB |
243 | } |
244 | ||
3807ff58 ED |
245 | static u32 macvlan_hash_mix(const struct macvlan_dev *vlan) |
246 | { | |
247 | return (u32)(((unsigned long)vlan) >> L1_CACHE_SHIFT); | |
248 | } | |
249 | ||
250 | ||
251 | static unsigned int mc_hash(const struct macvlan_dev *vlan, | |
252 | const unsigned char *addr) | |
cd431e73 ED |
253 | { |
254 | u32 val = __get_unaligned_cpu32(addr + 2); | |
255 | ||
3807ff58 | 256 | val ^= macvlan_hash_mix(vlan); |
cd431e73 ED |
257 | return hash_32(val, MACVLAN_MC_FILTER_BITS); |
258 | } | |
259 | ||
b863ceb7 | 260 | static void macvlan_broadcast(struct sk_buff *skb, |
618e1b74 AB |
261 | const struct macvlan_port *port, |
262 | struct net_device *src, | |
263 | enum macvlan_mode mode) | |
b863ceb7 | 264 | { |
1712b2ff | 265 | const struct ethhdr *eth = eth_hdr(skb); |
b863ceb7 | 266 | const struct macvlan_dev *vlan; |
b863ceb7 PM |
267 | struct sk_buff *nskb; |
268 | unsigned int i; | |
a1e514c5 | 269 | int err; |
3807ff58 | 270 | unsigned int hash; |
b863ceb7 | 271 | |
efbbced3 PM |
272 | if (skb->protocol == htons(ETH_P_PAUSE)) |
273 | return; | |
274 | ||
bb23ffa1 CJ |
275 | hash_for_each_rcu(port->vlan_hash, i, vlan, hlist) { |
276 | if (vlan->dev == src || !(vlan->mode & mode)) | |
277 | continue; | |
278 | ||
279 | hash = mc_hash(vlan, eth->h_dest); | |
280 | if (!test_bit(hash, vlan->mc_filter)) | |
281 | continue; | |
282 | ||
283 | err = NET_RX_DROP; | |
284 | nskb = skb_clone(skb, GFP_ATOMIC); | |
285 | if (likely(nskb)) | |
286 | err = macvlan_broadcast_one(nskb, vlan, eth, | |
412ca155 | 287 | mode == MACVLAN_MODE_BRIDGE) ?: |
566214f4 | 288 | netif_rx(nskb); |
bb23ffa1 CJ |
289 | macvlan_count_rx(vlan, skb->len + ETH_HLEN, |
290 | err == NET_RX_SUCCESS, true); | |
b863ceb7 PM |
291 | } |
292 | } | |
293 | ||
412ca155 | 294 | static void macvlan_process_broadcast(struct work_struct *w) |
b863ceb7 | 295 | { |
412ca155 HX |
296 | struct macvlan_port *port = container_of(w, struct macvlan_port, |
297 | bc_work); | |
298 | struct sk_buff *skb; | |
299 | struct sk_buff_head list; | |
300 | ||
fe0ca732 | 301 | __skb_queue_head_init(&list); |
412ca155 HX |
302 | |
303 | spin_lock_bh(&port->bc_queue.lock); | |
304 | skb_queue_splice_tail_init(&port->bc_queue, &list); | |
305 | spin_unlock_bh(&port->bc_queue.lock); | |
306 | ||
307 | while ((skb = __skb_dequeue(&list))) { | |
308 | const struct macvlan_dev *src = MACVLAN_SKB_CB(skb)->src; | |
309 | ||
310 | rcu_read_lock(); | |
b863ceb7 | 311 | |
618e1b74 AB |
312 | if (!src) |
313 | /* frame comes from an external address */ | |
314 | macvlan_broadcast(skb, port, NULL, | |
315 | MACVLAN_MODE_PRIVATE | | |
316 | MACVLAN_MODE_VEPA | | |
eb06acdc | 317 | MACVLAN_MODE_PASSTHRU| |
618e1b74 AB |
318 | MACVLAN_MODE_BRIDGE); |
319 | else if (src->mode == MACVLAN_MODE_VEPA) | |
320 | /* flood to everyone except source */ | |
321 | macvlan_broadcast(skb, port, src->dev, | |
322 | MACVLAN_MODE_VEPA | | |
323 | MACVLAN_MODE_BRIDGE); | |
412ca155 | 324 | else |
618e1b74 AB |
325 | /* |
326 | * flood only to VEPA ports, bridge ports | |
327 | * already saw the frame on the way out. | |
328 | */ | |
329 | macvlan_broadcast(skb, port, src->dev, | |
330 | MACVLAN_MODE_VEPA); | |
412ca155 HX |
331 | |
332 | rcu_read_unlock(); | |
333 | ||
260916df HX |
334 | if (src) |
335 | dev_put(src->dev); | |
bf97403a | 336 | consume_skb(skb); |
ce9a4186 MB |
337 | |
338 | cond_resched(); | |
412ca155 HX |
339 | } |
340 | } | |
341 | ||
342 | static void macvlan_broadcast_enqueue(struct macvlan_port *port, | |
260916df | 343 | const struct macvlan_dev *src, |
412ca155 HX |
344 | struct sk_buff *skb) |
345 | { | |
e676f197 | 346 | struct sk_buff *nskb; |
412ca155 HX |
347 | int err = -ENOMEM; |
348 | ||
e676f197 HX |
349 | nskb = skb_clone(skb, GFP_ATOMIC); |
350 | if (!nskb) | |
412ca155 HX |
351 | goto err; |
352 | ||
260916df HX |
353 | MACVLAN_SKB_CB(nskb)->src = src; |
354 | ||
412ca155 | 355 | spin_lock(&port->bc_queue.lock); |
d4bff72c | 356 | if (skb_queue_len(&port->bc_queue) < port->bc_queue_len_used) { |
260916df HX |
357 | if (src) |
358 | dev_hold(src->dev); | |
e676f197 | 359 | __skb_queue_tail(&port->bc_queue, nskb); |
412ca155 HX |
360 | err = 0; |
361 | } | |
362 | spin_unlock(&port->bc_queue.lock); | |
363 | ||
3d6642ea | 364 | queue_work(system_unbound_wq, &port->bc_work); |
1d7ea556 | 365 | |
412ca155 | 366 | if (err) |
e676f197 | 367 | goto free_nskb; |
412ca155 | 368 | |
412ca155 HX |
369 | return; |
370 | ||
e676f197 HX |
371 | free_nskb: |
372 | kfree_skb(nskb); | |
412ca155 | 373 | err: |
625788b5 | 374 | dev_core_stats_rx_dropped_inc(skb->dev); |
412ca155 HX |
375 | } |
376 | ||
79cf79ab MB |
377 | static void macvlan_flush_sources(struct macvlan_port *port, |
378 | struct macvlan_dev *vlan) | |
379 | { | |
bb23ffa1 CJ |
380 | struct macvlan_source_entry *entry; |
381 | struct hlist_node *next; | |
79cf79ab MB |
382 | int i; |
383 | ||
bb23ffa1 CJ |
384 | hash_for_each_safe(port->vlan_source_hash, i, next, entry, hlist) |
385 | if (entry->vlan == vlan) | |
386 | macvlan_hash_del_source(entry); | |
79cf79ab | 387 | |
79cf79ab MB |
388 | vlan->macaddr_count = 0; |
389 | } | |
390 | ||
391 | static void macvlan_forward_source_one(struct sk_buff *skb, | |
392 | struct macvlan_dev *vlan) | |
393 | { | |
394 | struct sk_buff *nskb; | |
395 | struct net_device *dev; | |
396 | int len; | |
397 | int ret; | |
398 | ||
399 | dev = vlan->dev; | |
400 | if (unlikely(!(dev->flags & IFF_UP))) | |
401 | return; | |
402 | ||
403 | nskb = skb_clone(skb, GFP_ATOMIC); | |
404 | if (!nskb) | |
405 | return; | |
406 | ||
407 | len = nskb->len + ETH_HLEN; | |
408 | nskb->dev = dev; | |
c8c41ea1 AD |
409 | |
410 | if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, dev->dev_addr)) | |
411 | nskb->pkt_type = PACKET_HOST; | |
79cf79ab | 412 | |
baebdf48 | 413 | ret = __netif_rx(nskb); |
4c979935 | 414 | macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, false); |
79cf79ab MB |
415 | } |
416 | ||
427f0c8c | 417 | static bool macvlan_forward_source(struct sk_buff *skb, |
79cf79ab MB |
418 | struct macvlan_port *port, |
419 | const unsigned char *addr) | |
420 | { | |
421 | struct macvlan_source_entry *entry; | |
422 | u32 idx = macvlan_eth_hash(addr); | |
423 | struct hlist_head *h = &port->vlan_source_hash[idx]; | |
427f0c8c | 424 | bool consume = false; |
79cf79ab MB |
425 | |
426 | hlist_for_each_entry_rcu(entry, h, hlist) { | |
427f0c8c JB |
427 | if (ether_addr_equal_64bits(entry->addr, addr)) { |
428 | if (entry->vlan->flags & MACVLAN_FLAG_NODST) | |
429 | consume = true; | |
fc51f2b7 | 430 | macvlan_forward_source_one(skb, entry->vlan); |
427f0c8c | 431 | } |
79cf79ab | 432 | } |
427f0c8c JB |
433 | |
434 | return consume; | |
79cf79ab MB |
435 | } |
436 | ||
412ca155 HX |
437 | /* called under rcu_read_lock() from netif_receive_skb */ |
438 | static rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) | |
439 | { | |
440 | struct macvlan_port *port; | |
441 | struct sk_buff *skb = *pskb; | |
442 | const struct ethhdr *eth = eth_hdr(skb); | |
443 | const struct macvlan_dev *vlan; | |
444 | const struct macvlan_dev *src; | |
445 | struct net_device *dev; | |
446 | unsigned int len = 0; | |
d1dd9119 | 447 | int ret; |
448 | rx_handler_result_t handle_res; | |
412ca155 | 449 | |
81f3dc93 AS |
450 | /* Packets from dev_loopback_xmit() do not have L2 header, bail out */ |
451 | if (unlikely(skb->pkt_type == PACKET_LOOPBACK)) | |
452 | return RX_HANDLER_PASS; | |
453 | ||
412ca155 HX |
454 | port = macvlan_port_get_rcu(skb->dev); |
455 | if (is_multicast_ether_addr(eth->h_dest)) { | |
9c127a01 HX |
456 | unsigned int hash; |
457 | ||
19bcf9f2 | 458 | skb = ip_check_defrag(dev_net(skb->dev), skb, IP_DEFRAG_MACVLAN); |
412ca155 HX |
459 | if (!skb) |
460 | return RX_HANDLER_CONSUMED; | |
e639b8d8 | 461 | *pskb = skb; |
412ca155 | 462 | eth = eth_hdr(skb); |
e16b8598 MW |
463 | if (macvlan_forward_source(skb, port, eth->h_source)) { |
464 | kfree_skb(skb); | |
427f0c8c | 465 | return RX_HANDLER_CONSUMED; |
e16b8598 | 466 | } |
412ca155 HX |
467 | src = macvlan_hash_lookup(port, eth->h_source); |
468 | if (src && src->mode != MACVLAN_MODE_VEPA && | |
469 | src->mode != MACVLAN_MODE_BRIDGE) { | |
729e72a1 | 470 | /* forward to original port. */ |
471 | vlan = src; | |
412ca155 | 472 | ret = macvlan_broadcast_one(skb, vlan, eth, 0) ?: |
baebdf48 | 473 | __netif_rx(skb); |
d1dd9119 | 474 | handle_res = RX_HANDLER_CONSUMED; |
729e72a1 | 475 | goto out; |
476 | } | |
477 | ||
9c127a01 HX |
478 | hash = mc_hash(NULL, eth->h_dest); |
479 | if (test_bit(hash, port->mc_filter)) | |
480 | macvlan_broadcast_enqueue(port, src, skb); | |
412ca155 | 481 | |
8a4eb573 | 482 | return RX_HANDLER_PASS; |
b863ceb7 PM |
483 | } |
484 | ||
e16b8598 MW |
485 | if (macvlan_forward_source(skb, port, eth->h_source)) { |
486 | kfree_skb(skb); | |
427f0c8c | 487 | return RX_HANDLER_CONSUMED; |
e16b8598 | 488 | } |
43c2d578 | 489 | if (macvlan_passthru(port)) |
233c7df0 JP |
490 | vlan = list_first_or_null_rcu(&port->vlans, |
491 | struct macvlan_dev, list); | |
eb06acdc SS |
492 | else |
493 | vlan = macvlan_hash_lookup(port, eth->h_dest); | |
dd6b9c2c | 494 | if (!vlan || vlan->mode == MACVLAN_MODE_SOURCE) |
8a4eb573 | 495 | return RX_HANDLER_PASS; |
b863ceb7 PM |
496 | |
497 | dev = vlan->dev; | |
498 | if (unlikely(!(dev->flags & IFF_UP))) { | |
499 | kfree_skb(skb); | |
8a4eb573 | 500 | return RX_HANDLER_CONSUMED; |
b863ceb7 | 501 | } |
a1e514c5 | 502 | len = skb->len + ETH_HLEN; |
b863ceb7 | 503 | skb = skb_share_check(skb, GFP_ATOMIC); |
d1dd9119 | 504 | if (!skb) { |
505 | ret = NET_RX_DROP; | |
506 | handle_res = RX_HANDLER_CONSUMED; | |
ba01877f | 507 | goto out; |
d1dd9119 | 508 | } |
b863ceb7 | 509 | |
e639b8d8 | 510 | *pskb = skb; |
b863ceb7 PM |
511 | skb->dev = dev; |
512 | skb->pkt_type = PACKET_HOST; | |
513 | ||
d1dd9119 | 514 | ret = NET_RX_SUCCESS; |
515 | handle_res = RX_HANDLER_ANOTHER; | |
ba01877f | 516 | out: |
4c979935 | 517 | macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, false); |
d1dd9119 | 518 | return handle_res; |
b863ceb7 PM |
519 | } |
520 | ||
618e1b74 AB |
521 | static int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) |
522 | { | |
523 | const struct macvlan_dev *vlan = netdev_priv(dev); | |
524 | const struct macvlan_port *port = vlan->port; | |
525 | const struct macvlan_dev *dest; | |
526 | ||
527 | if (vlan->mode == MACVLAN_MODE_BRIDGE) { | |
1712b2ff | 528 | const struct ethhdr *eth = skb_eth_hdr(skb); |
618e1b74 AB |
529 | |
530 | /* send to other bridge ports directly */ | |
531 | if (is_multicast_ether_addr(eth->h_dest)) { | |
1712b2ff | 532 | skb_reset_mac_header(skb); |
618e1b74 AB |
533 | macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); |
534 | goto xmit_world; | |
535 | } | |
536 | ||
537 | dest = macvlan_hash_lookup(port, eth->h_dest); | |
538 | if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { | |
a37dd333 | 539 | /* send to lowerdev first for its network taps */ |
cb2d0f3e | 540 | dev_forward_skb(vlan->lowerdev, skb); |
618e1b74 AB |
541 | |
542 | return NET_XMIT_SUCCESS; | |
543 | } | |
544 | } | |
618e1b74 | 545 | xmit_world: |
59b9997b | 546 | skb->dev = vlan->lowerdev; |
eadec877 AD |
547 | return dev_queue_xmit_accel(skb, |
548 | netdev_get_sb_channel(dev) ? dev : NULL); | |
618e1b74 AB |
549 | } |
550 | ||
688cea83 | 551 | static inline netdev_tx_t macvlan_netpoll_send_skb(struct macvlan_dev *vlan, struct sk_buff *skb) |
552 | { | |
553 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
f78ed220 | 554 | return netpoll_send_skb(vlan->netpoll, skb); |
688cea83 | 555 | #else |
556 | BUG(); | |
688cea83 | 557 | return NETDEV_TX_OK; |
f78ed220 | 558 | #endif |
688cea83 | 559 | } |
560 | ||
0db901bd | 561 | static netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, |
562 | struct net_device *dev) | |
b863ceb7 | 563 | { |
81d4e91c | 564 | struct macvlan_dev *vlan = netdev_priv(dev); |
b863ceb7 PM |
565 | unsigned int len = skb->len; |
566 | int ret; | |
688cea83 | 567 | |
568 | if (unlikely(netpoll_tx_running(dev))) | |
569 | return macvlan_netpoll_send_skb(vlan, skb); | |
b863ceb7 | 570 | |
81d4e91c | 571 | ret = macvlan_queue_xmit(skb, dev); |
a6cc0cfa | 572 | |
2d6c9ffc | 573 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
cdf3e274 | 574 | struct vlan_pcpu_stats *pcpu_stats; |
2c114553 | 575 | |
8ffab51b ED |
576 | pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); |
577 | u64_stats_update_begin(&pcpu_stats->syncp); | |
09cca53c ED |
578 | u64_stats_inc(&pcpu_stats->tx_packets); |
579 | u64_stats_add(&pcpu_stats->tx_bytes, len); | |
8ffab51b ED |
580 | u64_stats_update_end(&pcpu_stats->syncp); |
581 | } else { | |
582 | this_cpu_inc(vlan->pcpu_stats->tx_dropped); | |
583 | } | |
cbbef5e1 | 584 | return ret; |
b863ceb7 PM |
585 | } |
586 | ||
587 | static int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, | |
3b04ddde SH |
588 | unsigned short type, const void *daddr, |
589 | const void *saddr, unsigned len) | |
b863ceb7 PM |
590 | { |
591 | const struct macvlan_dev *vlan = netdev_priv(dev); | |
592 | struct net_device *lowerdev = vlan->lowerdev; | |
593 | ||
0c4e8581 SH |
594 | return dev_hard_header(skb, lowerdev, type, daddr, |
595 | saddr ? : dev->dev_addr, len); | |
b863ceb7 PM |
596 | } |
597 | ||
3b04ddde SH |
598 | static const struct header_ops macvlan_hard_header_ops = { |
599 | .create = macvlan_hard_header, | |
3b04ddde | 600 | .parse = eth_header_parse, |
3b04ddde SH |
601 | .cache = eth_header_cache, |
602 | .cache_update = eth_header_cache_update, | |
603 | }; | |
604 | ||
b863ceb7 PM |
605 | static int macvlan_open(struct net_device *dev) |
606 | { | |
607 | struct macvlan_dev *vlan = netdev_priv(dev); | |
b863ceb7 PM |
608 | struct net_device *lowerdev = vlan->lowerdev; |
609 | int err; | |
610 | ||
43c2d578 | 611 | if (macvlan_passthru(vlan->port)) { |
78738141 MT |
612 | if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) { |
613 | err = dev_set_promiscuity(lowerdev, 1); | |
614 | if (err < 0) | |
615 | goto out; | |
616 | } | |
eb06acdc SS |
617 | goto hash_add; |
618 | } | |
619 | ||
59f997b0 | 620 | err = -EADDRINUSE; |
7d775f63 AD |
621 | if (macvlan_addr_busy(vlan->port, dev->dev_addr)) |
622 | goto out; | |
623 | ||
624 | /* Attempt to populate accel_priv which is used to offload the L2 | |
625 | * forwarding requests for unicast packets. | |
626 | */ | |
81d4e91c | 627 | if (lowerdev->features & NETIF_F_HW_L2FW_DOFFLOAD) |
7d775f63 | 628 | vlan->accel_priv = |
a6cc0cfa JF |
629 | lowerdev->netdev_ops->ndo_dfwd_add_station(lowerdev, dev); |
630 | ||
81d4e91c AD |
631 | /* If earlier attempt to offload failed, or accel_priv is not |
632 | * populated we must add the unicast address to the lower device. | |
633 | */ | |
634 | if (IS_ERR_OR_NULL(vlan->accel_priv)) { | |
635 | vlan->accel_priv = NULL; | |
636 | err = dev_uc_add(lowerdev, dev->dev_addr); | |
637 | if (err < 0) | |
638 | goto out; | |
a6cc0cfa JF |
639 | } |
640 | ||
b89fb7da WC |
641 | if (dev->flags & IFF_ALLMULTI) { |
642 | err = dev_set_allmulti(lowerdev, 1); | |
643 | if (err < 0) | |
644 | goto del_unicast; | |
645 | } | |
eb06acdc | 646 | |
efdbd2b3 VY |
647 | if (dev->flags & IFF_PROMISC) { |
648 | err = dev_set_promiscuity(lowerdev, 1); | |
649 | if (err < 0) | |
650 | goto clear_multi; | |
651 | } | |
652 | ||
eb06acdc | 653 | hash_add: |
f9ac30f0 | 654 | macvlan_hash_add(vlan); |
b863ceb7 | 655 | return 0; |
b89fb7da | 656 | |
efdbd2b3 | 657 | clear_multi: |
c3891fa2 GF |
658 | if (dev->flags & IFF_ALLMULTI) |
659 | dev_set_allmulti(lowerdev, -1); | |
b89fb7da | 660 | del_unicast: |
7d775f63 | 661 | if (vlan->accel_priv) { |
a6cc0cfa | 662 | lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, |
7d775f63 AD |
663 | vlan->accel_priv); |
664 | vlan->accel_priv = NULL; | |
81d4e91c AD |
665 | } else { |
666 | dev_uc_del(lowerdev, dev->dev_addr); | |
a6cc0cfa | 667 | } |
81d4e91c | 668 | out: |
b89fb7da | 669 | return err; |
b863ceb7 PM |
670 | } |
671 | ||
672 | static int macvlan_stop(struct net_device *dev) | |
673 | { | |
674 | struct macvlan_dev *vlan = netdev_priv(dev); | |
675 | struct net_device *lowerdev = vlan->lowerdev; | |
676 | ||
7d775f63 | 677 | if (vlan->accel_priv) { |
a6cc0cfa | 678 | lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, |
7d775f63 AD |
679 | vlan->accel_priv); |
680 | vlan->accel_priv = NULL; | |
a6cc0cfa JF |
681 | } |
682 | ||
df8ef8f3 JF |
683 | dev_uc_unsync(lowerdev, dev); |
684 | dev_mc_unsync(lowerdev, dev); | |
685 | ||
43c2d578 | 686 | if (macvlan_passthru(vlan->port)) { |
df8ef8f3 JF |
687 | if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) |
688 | dev_set_promiscuity(lowerdev, -1); | |
eb06acdc SS |
689 | goto hash_del; |
690 | } | |
691 | ||
b863ceb7 PM |
692 | if (dev->flags & IFF_ALLMULTI) |
693 | dev_set_allmulti(lowerdev, -1); | |
694 | ||
efdbd2b3 VY |
695 | if (dev->flags & IFF_PROMISC) |
696 | dev_set_promiscuity(lowerdev, -1); | |
697 | ||
a748ee24 | 698 | dev_uc_del(lowerdev, dev->dev_addr); |
b863ceb7 | 699 | |
eb06acdc | 700 | hash_del: |
449f4544 | 701 | macvlan_hash_del(vlan, !dev->dismantle); |
b863ceb7 PM |
702 | return 0; |
703 | } | |
704 | ||
8bc7823e JK |
705 | static int macvlan_sync_address(struct net_device *dev, |
706 | const unsigned char *addr) | |
ad5d20a6 PM |
707 | { |
708 | struct macvlan_dev *vlan = netdev_priv(dev); | |
709 | struct net_device *lowerdev = vlan->lowerdev; | |
18c8c54d | 710 | struct macvlan_port *port = vlan->port; |
ad5d20a6 PM |
711 | int err; |
712 | ||
f9ac30f0 EB |
713 | if (!(dev->flags & IFF_UP)) { |
714 | /* Just copy in the new address */ | |
e35b8d7d | 715 | eth_hw_addr_set(dev, addr); |
f9ac30f0 EB |
716 | } else { |
717 | /* Rehash and update the device filters */ | |
e289fd28 | 718 | if (macvlan_addr_busy(vlan->port, addr)) |
59f997b0 | 719 | return -EADDRINUSE; |
ad5d20a6 | 720 | |
18c8c54d | 721 | if (!macvlan_passthru(port)) { |
e289fd28 | 722 | err = dev_uc_add(lowerdev, addr); |
723 | if (err) | |
724 | return err; | |
ad5d20a6 | 725 | |
e289fd28 | 726 | dev_uc_del(lowerdev, dev->dev_addr); |
727 | } | |
f9ac30f0 | 728 | |
e289fd28 | 729 | macvlan_hash_change_addr(vlan, addr); |
f9ac30f0 | 730 | } |
18c8c54d VY |
731 | if (macvlan_passthru(port) && !macvlan_addr_change(port)) { |
732 | /* Since addr_change isn't set, we are here due to lower | |
733 | * device change. Save the lower-dev address so we can | |
734 | * restore it later. | |
735 | */ | |
736 | ether_addr_copy(vlan->port->perm_addr, | |
737 | lowerdev->dev_addr); | |
738 | } | |
739 | macvlan_clear_addr_change(port); | |
ad5d20a6 PM |
740 | return 0; |
741 | } | |
742 | ||
e289fd28 | 743 | static int macvlan_set_mac_address(struct net_device *dev, void *p) |
744 | { | |
745 | struct macvlan_dev *vlan = netdev_priv(dev); | |
746 | struct sockaddr *addr = p; | |
747 | ||
748 | if (!is_valid_ether_addr(addr->sa_data)) | |
749 | return -EADDRNOTAVAIL; | |
750 | ||
e26f43fa VY |
751 | /* If the addresses are the same, this is a no-op */ |
752 | if (ether_addr_equal(dev->dev_addr, addr->sa_data)) | |
753 | return 0; | |
754 | ||
e289fd28 | 755 | if (vlan->mode == MACVLAN_MODE_PASSTHRU) { |
18c8c54d | 756 | macvlan_set_addr_change(vlan->port); |
3a37a963 | 757 | return dev_set_mac_address(vlan->lowerdev, addr, NULL); |
e289fd28 | 758 | } |
759 | ||
59f997b0 MC |
760 | if (macvlan_addr_busy(vlan->port, addr->sa_data)) |
761 | return -EADDRINUSE; | |
762 | ||
e289fd28 | 763 | return macvlan_sync_address(dev, addr->sa_data); |
764 | } | |
765 | ||
b863ceb7 PM |
766 | static void macvlan_change_rx_flags(struct net_device *dev, int change) |
767 | { | |
768 | struct macvlan_dev *vlan = netdev_priv(dev); | |
769 | struct net_device *lowerdev = vlan->lowerdev; | |
770 | ||
bbeb0ead PC |
771 | if (dev->flags & IFF_UP) { |
772 | if (change & IFF_ALLMULTI) | |
773 | dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
efdbd2b3 VY |
774 | if (change & IFF_PROMISC) |
775 | dev_set_promiscuity(lowerdev, | |
776 | dev->flags & IFF_PROMISC ? 1 : -1); | |
777 | ||
bbeb0ead | 778 | } |
b863ceb7 PM |
779 | } |
780 | ||
9c127a01 HX |
781 | static void macvlan_compute_filter(unsigned long *mc_filter, |
782 | struct net_device *dev, | |
783 | struct macvlan_dev *vlan) | |
b863ceb7 | 784 | { |
cd431e73 | 785 | if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { |
9c127a01 | 786 | bitmap_fill(mc_filter, MACVLAN_MC_FILTER_SZ); |
cd431e73 ED |
787 | } else { |
788 | struct netdev_hw_addr *ha; | |
789 | DECLARE_BITMAP(filter, MACVLAN_MC_FILTER_SZ); | |
790 | ||
791 | bitmap_zero(filter, MACVLAN_MC_FILTER_SZ); | |
792 | netdev_for_each_mc_addr(ha, dev) { | |
3807ff58 | 793 | __set_bit(mc_hash(vlan, ha->addr), filter); |
cd431e73 | 794 | } |
d5270430 | 795 | |
3807ff58 | 796 | __set_bit(mc_hash(vlan, dev->broadcast), filter); |
d5270430 | 797 | |
9c127a01 | 798 | bitmap_copy(mc_filter, filter, MACVLAN_MC_FILTER_SZ); |
cd431e73 | 799 | } |
9c127a01 HX |
800 | } |
801 | ||
802 | static void macvlan_set_mac_lists(struct net_device *dev) | |
803 | { | |
804 | struct macvlan_dev *vlan = netdev_priv(dev); | |
805 | ||
806 | macvlan_compute_filter(vlan->mc_filter, dev, vlan); | |
807 | ||
df8ef8f3 | 808 | dev_uc_sync(vlan->lowerdev, dev); |
b863ceb7 | 809 | dev_mc_sync(vlan->lowerdev, dev); |
9c127a01 HX |
810 | |
811 | /* This is slightly inaccurate as we're including the subscription | |
812 | * list of vlan->lowerdev too. | |
813 | * | |
814 | * Bug alert: This only works if everyone has the same broadcast | |
815 | * address as lowerdev. As soon as someone changes theirs this | |
816 | * will break. | |
817 | * | |
818 | * However, this is already broken as when you change your broadcast | |
819 | * address we don't get called. | |
820 | * | |
821 | * The solution is to maintain a list of broadcast addresses like | |
822 | * we do for uc/mc, if you care. | |
823 | */ | |
824 | macvlan_compute_filter(vlan->port->mc_filter, vlan->lowerdev, NULL); | |
b863ceb7 PM |
825 | } |
826 | ||
827 | static int macvlan_change_mtu(struct net_device *dev, int new_mtu) | |
828 | { | |
829 | struct macvlan_dev *vlan = netdev_priv(dev); | |
830 | ||
91572088 | 831 | if (vlan->lowerdev->mtu < new_mtu) |
b863ceb7 PM |
832 | return -EINVAL; |
833 | dev->mtu = new_mtu; | |
834 | return 0; | |
835 | } | |
836 | ||
a7605370 | 837 | static int macvlan_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
254c0a2b HL |
838 | { |
839 | struct net_device *real_dev = macvlan_dev_real_dev(dev); | |
840 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
841 | struct ifreq ifrr; | |
842 | int err = -EOPNOTSUPP; | |
843 | ||
36f18439 | 844 | strscpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); |
254c0a2b HL |
845 | ifrr.ifr_ifru = ifr->ifr_ifru; |
846 | ||
847 | switch (cmd) { | |
848 | case SIOCSHWTSTAMP: | |
6c2ea9eb HL |
849 | if (!net_eq(dev_net(dev), &init_net)) |
850 | break; | |
df561f66 | 851 | fallthrough; |
254c0a2b | 852 | case SIOCGHWTSTAMP: |
a7605370 AB |
853 | if (netif_device_present(real_dev) && ops->ndo_eth_ioctl) |
854 | err = ops->ndo_eth_ioctl(real_dev, &ifrr, cmd); | |
254c0a2b HL |
855 | break; |
856 | } | |
857 | ||
858 | if (!err) | |
859 | ifr->ifr_ifru = ifrr.ifr_ifru; | |
860 | ||
861 | return err; | |
862 | } | |
863 | ||
b863ceb7 PM |
864 | /* |
865 | * macvlan network devices have devices nesting below it and are a special | |
866 | * "super class" of normal network devices; split their locks off into a | |
867 | * separate class since they always nest. | |
868 | */ | |
845e0ebb CW |
869 | static struct lock_class_key macvlan_netdev_addr_lock_key; |
870 | ||
70957eae VY |
871 | #define ALWAYS_ON_OFFLOADS \ |
872 | (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_GSO_SOFTWARE | \ | |
f21e5077 | 873 | NETIF_F_GSO_ROBUST | NETIF_F_GSO_ENCAP_ALL) |
8b4703e9 | 874 | |
70957eae VY |
875 | #define ALWAYS_ON_FEATURES (ALWAYS_ON_OFFLOADS | NETIF_F_LLTX) |
876 | ||
b863ceb7 | 877 | #define MACVLAN_FEATURES \ |
a188222b | 878 | (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ |
fb652fdf | 879 | NETIF_F_GSO | NETIF_F_TSO | NETIF_F_LRO | \ |
8d13e670 | 880 | NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ |
28d2b136 | 881 | NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER) |
b863ceb7 PM |
882 | |
883 | #define MACVLAN_STATE_MASK \ | |
884 | ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) | |
885 | ||
845e0ebb CW |
886 | static void macvlan_set_lockdep_class(struct net_device *dev) |
887 | { | |
888 | netdev_lockdep_set_classes(dev); | |
be74294f CW |
889 | lockdep_set_class(&dev->addr_list_lock, |
890 | &macvlan_netdev_addr_lock_key); | |
845e0ebb CW |
891 | } |
892 | ||
b863ceb7 PM |
893 | static int macvlan_init(struct net_device *dev) |
894 | { | |
895 | struct macvlan_dev *vlan = netdev_priv(dev); | |
291ac684 | 896 | struct net_device *lowerdev = vlan->lowerdev; |
30837960 | 897 | struct macvlan_port *port = vlan->port; |
b863ceb7 PM |
898 | |
899 | dev->state = (dev->state & ~MACVLAN_STATE_MASK) | | |
900 | (lowerdev->state & MACVLAN_STATE_MASK); | |
901 | dev->features = lowerdev->features & MACVLAN_FEATURES; | |
8b4703e9 | 902 | dev->features |= ALWAYS_ON_FEATURES; |
62dbe830 | 903 | dev->hw_features |= NETIF_F_LRO; |
081e83a7 | 904 | dev->vlan_features = lowerdev->vlan_features & MACVLAN_FEATURES; |
70957eae | 905 | dev->vlan_features |= ALWAYS_ON_OFFLOADS; |
f21e5077 | 906 | dev->hw_enc_features |= dev->features; |
6df6398f | 907 | netif_inherit_tso_max(dev, lowerdev); |
ef5c8996 | 908 | dev->hard_header_len = lowerdev->hard_header_len; |
845e0ebb | 909 | macvlan_set_lockdep_class(dev); |
1a33e10e | 910 | |
1c213bd2 | 911 | vlan->pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats); |
8ffab51b | 912 | if (!vlan->pcpu_stats) |
fccaf710 ED |
913 | return -ENOMEM; |
914 | ||
30837960 FR |
915 | port->count += 1; |
916 | ||
291ac684 | 917 | /* Get macvlan's reference to lowerdev */ |
d62607c3 | 918 | netdev_hold(lowerdev, &vlan->dev_tracker, GFP_KERNEL); |
291ac684 | 919 | |
b863ceb7 PM |
920 | return 0; |
921 | } | |
922 | ||
fccaf710 ED |
923 | static void macvlan_uninit(struct net_device *dev) |
924 | { | |
925 | struct macvlan_dev *vlan = netdev_priv(dev); | |
d5cd9244 | 926 | struct macvlan_port *port = vlan->port; |
fccaf710 | 927 | |
8ffab51b | 928 | free_percpu(vlan->pcpu_stats); |
d5cd9244 | 929 | |
79cf79ab | 930 | macvlan_flush_sources(port, vlan); |
5e3c516b DM |
931 | port->count -= 1; |
932 | if (!port->count) | |
d5cd9244 | 933 | macvlan_port_destroy(port->dev); |
fccaf710 ED |
934 | } |
935 | ||
bc1f4470 | 936 | static void macvlan_dev_get_stats64(struct net_device *dev, |
937 | struct rtnl_link_stats64 *stats) | |
fccaf710 | 938 | { |
fccaf710 ED |
939 | struct macvlan_dev *vlan = netdev_priv(dev); |
940 | ||
8ffab51b | 941 | if (vlan->pcpu_stats) { |
cdf3e274 | 942 | struct vlan_pcpu_stats *p; |
8ffab51b ED |
943 | u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; |
944 | u32 rx_errors = 0, tx_dropped = 0; | |
bc66154e | 945 | unsigned int start; |
fccaf710 ED |
946 | int i; |
947 | ||
948 | for_each_possible_cpu(i) { | |
8ffab51b | 949 | p = per_cpu_ptr(vlan->pcpu_stats, i); |
bc66154e | 950 | do { |
068c38ad | 951 | start = u64_stats_fetch_begin(&p->syncp); |
09cca53c ED |
952 | rx_packets = u64_stats_read(&p->rx_packets); |
953 | rx_bytes = u64_stats_read(&p->rx_bytes); | |
954 | rx_multicast = u64_stats_read(&p->rx_multicast); | |
955 | tx_packets = u64_stats_read(&p->tx_packets); | |
956 | tx_bytes = u64_stats_read(&p->tx_bytes); | |
068c38ad | 957 | } while (u64_stats_fetch_retry(&p->syncp, start)); |
8ffab51b ED |
958 | |
959 | stats->rx_packets += rx_packets; | |
960 | stats->rx_bytes += rx_bytes; | |
961 | stats->multicast += rx_multicast; | |
962 | stats->tx_packets += tx_packets; | |
963 | stats->tx_bytes += tx_bytes; | |
964 | /* rx_errors & tx_dropped are u32, updated | |
965 | * without syncp protection. | |
966 | */ | |
09cca53c ED |
967 | rx_errors += READ_ONCE(p->rx_errors); |
968 | tx_dropped += READ_ONCE(p->tx_dropped); | |
fccaf710 | 969 | } |
8ffab51b ED |
970 | stats->rx_errors = rx_errors; |
971 | stats->rx_dropped = rx_errors; | |
972 | stats->tx_dropped = tx_dropped; | |
fccaf710 | 973 | } |
fccaf710 ED |
974 | } |
975 | ||
8e586137 | 976 | static int macvlan_vlan_rx_add_vid(struct net_device *dev, |
80d5c368 | 977 | __be16 proto, u16 vid) |
8d13e670 JF |
978 | { |
979 | struct macvlan_dev *vlan = netdev_priv(dev); | |
980 | struct net_device *lowerdev = vlan->lowerdev; | |
8d13e670 | 981 | |
80d5c368 | 982 | return vlan_vid_add(lowerdev, proto, vid); |
8d13e670 JF |
983 | } |
984 | ||
8e586137 | 985 | static int macvlan_vlan_rx_kill_vid(struct net_device *dev, |
80d5c368 | 986 | __be16 proto, u16 vid) |
8d13e670 JF |
987 | { |
988 | struct macvlan_dev *vlan = netdev_priv(dev); | |
989 | struct net_device *lowerdev = vlan->lowerdev; | |
8d13e670 | 990 | |
80d5c368 | 991 | vlan_vid_del(lowerdev, proto, vid); |
8e586137 | 992 | return 0; |
8d13e670 JF |
993 | } |
994 | ||
edc7d573 | 995 | static int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], |
df8ef8f3 | 996 | struct net_device *dev, |
f6f6424b | 997 | const unsigned char *addr, u16 vid, |
87b0984e PM |
998 | u16 flags, |
999 | struct netlink_ext_ack *extack) | |
df8ef8f3 JF |
1000 | { |
1001 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1002 | int err = -EINVAL; | |
1003 | ||
8a50f11c VY |
1004 | /* Support unicast filter only on passthru devices. |
1005 | * Multicast filter should be allowed on all devices. | |
1006 | */ | |
43c2d578 | 1007 | if (!macvlan_passthru(vlan->port) && is_unicast_ether_addr(addr)) |
df8ef8f3 JF |
1008 | return -EOPNOTSUPP; |
1009 | ||
ab2cfbb2 TR |
1010 | if (flags & NLM_F_REPLACE) |
1011 | return -EOPNOTSUPP; | |
1012 | ||
df8ef8f3 JF |
1013 | if (is_unicast_ether_addr(addr)) |
1014 | err = dev_uc_add_excl(dev, addr); | |
1015 | else if (is_multicast_ether_addr(addr)) | |
1016 | err = dev_mc_add_excl(dev, addr); | |
1017 | ||
1018 | return err; | |
1019 | } | |
1020 | ||
1690be63 | 1021 | static int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], |
df8ef8f3 | 1022 | struct net_device *dev, |
ca4567f1 AM |
1023 | const unsigned char *addr, u16 vid, |
1024 | struct netlink_ext_ack *extack) | |
df8ef8f3 JF |
1025 | { |
1026 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1027 | int err = -EINVAL; | |
1028 | ||
8a50f11c VY |
1029 | /* Support unicast filter only on passthru devices. |
1030 | * Multicast filter should be allowed on all devices. | |
1031 | */ | |
43c2d578 | 1032 | if (!macvlan_passthru(vlan->port) && is_unicast_ether_addr(addr)) |
df8ef8f3 JF |
1033 | return -EOPNOTSUPP; |
1034 | ||
1035 | if (is_unicast_ether_addr(addr)) | |
1036 | err = dev_uc_del(dev, addr); | |
1037 | else if (is_multicast_ether_addr(addr)) | |
1038 | err = dev_mc_del(dev, addr); | |
1039 | ||
1040 | return err; | |
1041 | } | |
1042 | ||
b863ceb7 PM |
1043 | static void macvlan_ethtool_get_drvinfo(struct net_device *dev, |
1044 | struct ethtool_drvinfo *drvinfo) | |
1045 | { | |
fb3ceec1 WS |
1046 | strscpy(drvinfo->driver, "macvlan", sizeof(drvinfo->driver)); |
1047 | strscpy(drvinfo->version, "0.1", sizeof(drvinfo->version)); | |
b863ceb7 PM |
1048 | } |
1049 | ||
85f95819 DD |
1050 | static int macvlan_ethtool_get_link_ksettings(struct net_device *dev, |
1051 | struct ethtool_link_ksettings *cmd) | |
9edb8bb6 SH |
1052 | { |
1053 | const struct macvlan_dev *vlan = netdev_priv(dev); | |
4bc71cb9 | 1054 | |
85f95819 | 1055 | return __ethtool_get_link_ksettings(vlan->lowerdev, cmd); |
9edb8bb6 SH |
1056 | } |
1057 | ||
254c0a2b HL |
1058 | static int macvlan_ethtool_get_ts_info(struct net_device *dev, |
1059 | struct ethtool_ts_info *info) | |
1060 | { | |
1061 | struct net_device *real_dev = macvlan_dev_real_dev(dev); | |
1062 | const struct ethtool_ops *ops = real_dev->ethtool_ops; | |
1063 | struct phy_device *phydev = real_dev->phydev; | |
1064 | ||
d25de984 RC |
1065 | if (phy_has_tsinfo(phydev)) { |
1066 | return phy_ts_info(phydev, info); | |
254c0a2b HL |
1067 | } else if (ops->get_ts_info) { |
1068 | return ops->get_ts_info(real_dev, info); | |
1069 | } else { | |
1070 | info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE | | |
1071 | SOF_TIMESTAMPING_SOFTWARE; | |
1072 | info->phc_index = -1; | |
1073 | } | |
1074 | ||
1075 | return 0; | |
1076 | } | |
1077 | ||
2be5c767 VY |
1078 | static netdev_features_t macvlan_fix_features(struct net_device *dev, |
1079 | netdev_features_t features) | |
1080 | { | |
1081 | struct macvlan_dev *vlan = netdev_priv(dev); | |
62dbe830 | 1082 | netdev_features_t lowerdev_features = vlan->lowerdev->features; |
797f87f8 | 1083 | netdev_features_t mask; |
2be5c767 | 1084 | |
797f87f8 FW |
1085 | features |= NETIF_F_ALL_FOR_ALL; |
1086 | features &= (vlan->set_features | ~MACVLAN_FEATURES); | |
1087 | mask = features; | |
1088 | ||
62dbe830 MK |
1089 | lowerdev_features &= (features | ~NETIF_F_LRO); |
1090 | features = netdev_increment_features(lowerdev_features, features, mask); | |
8b4703e9 | 1091 | features |= ALWAYS_ON_FEATURES; |
13fbcc8d | 1092 | features &= (ALWAYS_ON_FEATURES | MACVLAN_FEATURES); |
797f87f8 FW |
1093 | |
1094 | return features; | |
2be5c767 VY |
1095 | } |
1096 | ||
688cea83 | 1097 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1098 | static void macvlan_dev_poll_controller(struct net_device *dev) | |
1099 | { | |
1100 | return; | |
1101 | } | |
1102 | ||
1103 | static int macvlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) | |
1104 | { | |
1105 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1106 | struct net_device *real_dev = vlan->lowerdev; | |
1107 | struct netpoll *netpoll; | |
419a38ce | 1108 | int err; |
688cea83 | 1109 | |
1110 | netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); | |
1111 | err = -ENOMEM; | |
1112 | if (!netpoll) | |
1113 | goto out; | |
1114 | ||
1115 | err = __netpoll_setup(netpoll, real_dev); | |
1116 | if (err) { | |
1117 | kfree(netpoll); | |
1118 | goto out; | |
1119 | } | |
1120 | ||
1121 | vlan->netpoll = netpoll; | |
1122 | ||
1123 | out: | |
1124 | return err; | |
1125 | } | |
1126 | ||
1127 | static void macvlan_dev_netpoll_cleanup(struct net_device *dev) | |
1128 | { | |
1129 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1130 | struct netpoll *netpoll = vlan->netpoll; | |
1131 | ||
1132 | if (!netpoll) | |
1133 | return; | |
1134 | ||
1135 | vlan->netpoll = NULL; | |
1136 | ||
c9fbd71f | 1137 | __netpoll_free(netpoll); |
688cea83 | 1138 | } |
1139 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
1140 | ||
ef5fa6bc ND |
1141 | static int macvlan_dev_get_iflink(const struct net_device *dev) |
1142 | { | |
1143 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1144 | ||
1145 | return vlan->lowerdev->ifindex; | |
1146 | } | |
1147 | ||
b863ceb7 PM |
1148 | static const struct ethtool_ops macvlan_ethtool_ops = { |
1149 | .get_link = ethtool_op_get_link, | |
85f95819 | 1150 | .get_link_ksettings = macvlan_ethtool_get_link_ksettings, |
b863ceb7 | 1151 | .get_drvinfo = macvlan_ethtool_get_drvinfo, |
254c0a2b | 1152 | .get_ts_info = macvlan_ethtool_get_ts_info, |
b863ceb7 PM |
1153 | }; |
1154 | ||
54a30c97 SH |
1155 | static const struct net_device_ops macvlan_netdev_ops = { |
1156 | .ndo_init = macvlan_init, | |
fccaf710 | 1157 | .ndo_uninit = macvlan_uninit, |
54a30c97 SH |
1158 | .ndo_open = macvlan_open, |
1159 | .ndo_stop = macvlan_stop, | |
00829823 | 1160 | .ndo_start_xmit = macvlan_start_xmit, |
54a30c97 | 1161 | .ndo_change_mtu = macvlan_change_mtu, |
a7605370 | 1162 | .ndo_eth_ioctl = macvlan_eth_ioctl, |
2be5c767 | 1163 | .ndo_fix_features = macvlan_fix_features, |
54a30c97 SH |
1164 | .ndo_change_rx_flags = macvlan_change_rx_flags, |
1165 | .ndo_set_mac_address = macvlan_set_mac_address, | |
df8ef8f3 | 1166 | .ndo_set_rx_mode = macvlan_set_mac_lists, |
bc66154e | 1167 | .ndo_get_stats64 = macvlan_dev_get_stats64, |
54a30c97 | 1168 | .ndo_validate_addr = eth_validate_addr, |
8d13e670 JF |
1169 | .ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid, |
1170 | .ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid, | |
df8ef8f3 JF |
1171 | .ndo_fdb_add = macvlan_fdb_add, |
1172 | .ndo_fdb_del = macvlan_fdb_del, | |
1173 | .ndo_fdb_dump = ndo_dflt_fdb_dump, | |
688cea83 | 1174 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1175 | .ndo_poll_controller = macvlan_dev_poll_controller, | |
1176 | .ndo_netpoll_setup = macvlan_dev_netpoll_setup, | |
1177 | .ndo_netpoll_cleanup = macvlan_dev_netpoll_cleanup, | |
1178 | #endif | |
ef5fa6bc | 1179 | .ndo_get_iflink = macvlan_dev_get_iflink, |
f56e67b5 | 1180 | .ndo_features_check = passthru_features_check, |
54a30c97 SH |
1181 | }; |
1182 | ||
291ac684 ZX |
1183 | static void macvlan_dev_free(struct net_device *dev) |
1184 | { | |
1185 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1186 | ||
1187 | /* Get rid of the macvlan's reference to lowerdev */ | |
d62607c3 | 1188 | netdev_put(vlan->lowerdev, &vlan->dev_tracker); |
291ac684 ZX |
1189 | } |
1190 | ||
8a35747a | 1191 | void macvlan_common_setup(struct net_device *dev) |
b863ceb7 PM |
1192 | { |
1193 | ether_setup(dev); | |
1194 | ||
b64085b0 | 1195 | /* ether_setup() has set dev->min_mtu to ETH_MIN_MTU. */ |
91572088 | 1196 | dev->max_mtu = ETH_MAX_MTU; |
02875878 ED |
1197 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
1198 | netif_keep_dst(dev); | |
2106efda | 1199 | dev->priv_flags |= IFF_UNICAST_FLT | IFF_CHANGE_PROTO_DOWN; |
54a30c97 | 1200 | dev->netdev_ops = &macvlan_netdev_ops; |
cf124db5 | 1201 | dev->needs_free_netdev = true; |
291ac684 | 1202 | dev->priv_destructor = macvlan_dev_free; |
71740129 | 1203 | dev->header_ops = &macvlan_hard_header_ops; |
b863ceb7 | 1204 | dev->ethtool_ops = &macvlan_ethtool_ops; |
8a35747a HX |
1205 | } |
1206 | EXPORT_SYMBOL_GPL(macvlan_common_setup); | |
1207 | ||
1208 | static void macvlan_setup(struct net_device *dev) | |
1209 | { | |
1210 | macvlan_common_setup(dev); | |
7009212b | 1211 | dev->priv_flags |= IFF_NO_QUEUE; |
b863ceb7 PM |
1212 | } |
1213 | ||
1214 | static int macvlan_port_create(struct net_device *dev) | |
1215 | { | |
1216 | struct macvlan_port *port; | |
1217 | unsigned int i; | |
ab95bfe0 | 1218 | int err; |
b863ceb7 PM |
1219 | |
1220 | if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) | |
1221 | return -EINVAL; | |
1222 | ||
322dc6e0 | 1223 | if (netdev_is_rx_handler_busy(dev)) |
d6b00fec MB |
1224 | return -EBUSY; |
1225 | ||
b863ceb7 PM |
1226 | port = kzalloc(sizeof(*port), GFP_KERNEL); |
1227 | if (port == NULL) | |
1228 | return -ENOMEM; | |
1229 | ||
1230 | port->dev = dev; | |
18c8c54d | 1231 | ether_addr_copy(port->perm_addr, dev->dev_addr); |
b863ceb7 PM |
1232 | INIT_LIST_HEAD(&port->vlans); |
1233 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) | |
1234 | INIT_HLIST_HEAD(&port->vlan_hash[i]); | |
79cf79ab MB |
1235 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) |
1236 | INIT_HLIST_HEAD(&port->vlan_source_hash[i]); | |
ab95bfe0 | 1237 | |
d4bff72c | 1238 | port->bc_queue_len_used = 0; |
412ca155 HX |
1239 | skb_queue_head_init(&port->bc_queue); |
1240 | INIT_WORK(&port->bc_work, macvlan_process_broadcast); | |
1241 | ||
a35e2c1b JP |
1242 | err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); |
1243 | if (err) | |
ab95bfe0 | 1244 | kfree(port); |
d9351561 ED |
1245 | else |
1246 | dev->priv_flags |= IFF_MACVLAN_PORT; | |
ab95bfe0 | 1247 | return err; |
b863ceb7 PM |
1248 | } |
1249 | ||
1250 | static void macvlan_port_destroy(struct net_device *dev) | |
1251 | { | |
e052f7e6 | 1252 | struct macvlan_port *port = macvlan_port_get_rtnl(dev); |
f6478218 | 1253 | struct sk_buff *skb; |
b863ceb7 | 1254 | |
a35e2c1b | 1255 | dev->priv_flags &= ~IFF_MACVLAN_PORT; |
ab95bfe0 | 1256 | netdev_rx_handler_unregister(dev); |
fe0ca732 ED |
1257 | |
1258 | /* After this point, no packet can schedule bc_work anymore, | |
1259 | * but we need to cancel it and purge left skbs if any. | |
1260 | */ | |
1261 | cancel_work_sync(&port->bc_work); | |
f6478218 HX |
1262 | |
1263 | while ((skb = __skb_dequeue(&port->bc_queue))) { | |
1264 | const struct macvlan_dev *src = MACVLAN_SKB_CB(skb)->src; | |
1265 | ||
1266 | if (src) | |
1267 | dev_put(src->dev); | |
1268 | ||
1269 | kfree_skb(skb); | |
1270 | } | |
fe0ca732 | 1271 | |
18c8c54d VY |
1272 | /* If the lower device address has been changed by passthru |
1273 | * macvlan, put it back. | |
1274 | */ | |
1275 | if (macvlan_passthru(port) && | |
1276 | !ether_addr_equal(port->dev->dev_addr, port->perm_addr)) { | |
1277 | struct sockaddr sa; | |
1278 | ||
1279 | sa.sa_family = port->dev->type; | |
1280 | memcpy(&sa.sa_data, port->perm_addr, port->dev->addr_len); | |
3a37a963 | 1281 | dev_set_mac_address(port->dev, &sa, NULL); |
18c8c54d VY |
1282 | } |
1283 | ||
a1f5315c | 1284 | kfree(port); |
b863ceb7 PM |
1285 | } |
1286 | ||
a8b8a889 MS |
1287 | static int macvlan_validate(struct nlattr *tb[], struct nlattr *data[], |
1288 | struct netlink_ext_ack *extack) | |
b863ceb7 | 1289 | { |
8b61fba5 AŠ |
1290 | struct nlattr *nla, *head; |
1291 | int rem, len; | |
1292 | ||
b863ceb7 PM |
1293 | if (tb[IFLA_ADDRESS]) { |
1294 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
1295 | return -EINVAL; | |
1296 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
1297 | return -EADDRNOTAVAIL; | |
1298 | } | |
27c0b1a8 | 1299 | |
07850a4f ZS |
1300 | if (!data) |
1301 | return 0; | |
1302 | ||
1303 | if (data[IFLA_MACVLAN_FLAGS] && | |
427f0c8c JB |
1304 | nla_get_u16(data[IFLA_MACVLAN_FLAGS]) & ~(MACVLAN_FLAG_NOPROMISC | |
1305 | MACVLAN_FLAG_NODST)) | |
15127478 MT |
1306 | return -EINVAL; |
1307 | ||
07850a4f | 1308 | if (data[IFLA_MACVLAN_MODE]) { |
27c0b1a8 AB |
1309 | switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { |
1310 | case MACVLAN_MODE_PRIVATE: | |
1311 | case MACVLAN_MODE_VEPA: | |
1312 | case MACVLAN_MODE_BRIDGE: | |
eb06acdc | 1313 | case MACVLAN_MODE_PASSTHRU: |
79cf79ab MB |
1314 | case MACVLAN_MODE_SOURCE: |
1315 | break; | |
1316 | default: | |
1317 | return -EINVAL; | |
1318 | } | |
1319 | } | |
1320 | ||
07850a4f | 1321 | if (data[IFLA_MACVLAN_MACADDR_MODE]) { |
79cf79ab MB |
1322 | switch (nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE])) { |
1323 | case MACVLAN_MACADDR_ADD: | |
1324 | case MACVLAN_MACADDR_DEL: | |
1325 | case MACVLAN_MACADDR_FLUSH: | |
1326 | case MACVLAN_MACADDR_SET: | |
27c0b1a8 AB |
1327 | break; |
1328 | default: | |
1329 | return -EINVAL; | |
1330 | } | |
1331 | } | |
79cf79ab | 1332 | |
07850a4f | 1333 | if (data[IFLA_MACVLAN_MACADDR]) { |
79cf79ab MB |
1334 | if (nla_len(data[IFLA_MACVLAN_MACADDR]) != ETH_ALEN) |
1335 | return -EINVAL; | |
1336 | ||
1337 | if (!is_valid_ether_addr(nla_data(data[IFLA_MACVLAN_MACADDR]))) | |
1338 | return -EADDRNOTAVAIL; | |
1339 | } | |
1340 | ||
8b61fba5 AŠ |
1341 | if (data[IFLA_MACVLAN_MACADDR_DATA]) { |
1342 | head = nla_data(data[IFLA_MACVLAN_MACADDR_DATA]); | |
1343 | len = nla_len(data[IFLA_MACVLAN_MACADDR_DATA]); | |
1344 | ||
1345 | nla_for_each_attr(nla, head, len, rem) { | |
1346 | if (nla_type(nla) != IFLA_MACVLAN_MACADDR || | |
1347 | nla_len(nla) != ETH_ALEN) | |
1348 | return -EINVAL; | |
1349 | ||
1350 | if (!is_valid_ether_addr(nla_data(nla))) | |
1351 | return -EADDRNOTAVAIL; | |
1352 | } | |
1353 | } | |
1354 | ||
07850a4f | 1355 | if (data[IFLA_MACVLAN_MACADDR_COUNT]) |
79cf79ab MB |
1356 | return -EINVAL; |
1357 | ||
1358 | return 0; | |
1359 | } | |
1360 | ||
50a77e5f | 1361 | /* |
79cf79ab MB |
1362 | * reconfigure list of remote source mac address |
1363 | * (only for macvlan devices in source mode) | |
1364 | * Note regarding alignment: all netlink data is aligned to 4 Byte, which | |
1365 | * suffices for both ether_addr_copy and ether_addr_equal_64bits usage. | |
1366 | */ | |
1367 | static int macvlan_changelink_sources(struct macvlan_dev *vlan, u32 mode, | |
1368 | struct nlattr *data[]) | |
1369 | { | |
1370 | char *addr = NULL; | |
1371 | int ret, rem, len; | |
1372 | struct nlattr *nla, *head; | |
1373 | struct macvlan_source_entry *entry; | |
1374 | ||
1375 | if (data[IFLA_MACVLAN_MACADDR]) | |
1376 | addr = nla_data(data[IFLA_MACVLAN_MACADDR]); | |
1377 | ||
1378 | if (mode == MACVLAN_MACADDR_ADD) { | |
1379 | if (!addr) | |
1380 | return -EINVAL; | |
1381 | ||
1382 | return macvlan_hash_add_source(vlan, addr); | |
1383 | ||
1384 | } else if (mode == MACVLAN_MACADDR_DEL) { | |
1385 | if (!addr) | |
1386 | return -EINVAL; | |
1387 | ||
1388 | entry = macvlan_hash_lookup_source(vlan, addr); | |
1389 | if (entry) { | |
1390 | macvlan_hash_del_source(entry); | |
1391 | vlan->macaddr_count--; | |
1392 | } | |
1393 | } else if (mode == MACVLAN_MACADDR_FLUSH) { | |
1394 | macvlan_flush_sources(vlan->port, vlan); | |
1395 | } else if (mode == MACVLAN_MACADDR_SET) { | |
1396 | macvlan_flush_sources(vlan->port, vlan); | |
1397 | ||
1398 | if (addr) { | |
1399 | ret = macvlan_hash_add_source(vlan, addr); | |
1400 | if (ret) | |
1401 | return ret; | |
1402 | } | |
1403 | ||
89430ef3 | 1404 | if (!data[IFLA_MACVLAN_MACADDR_DATA]) |
79cf79ab MB |
1405 | return 0; |
1406 | ||
1407 | head = nla_data(data[IFLA_MACVLAN_MACADDR_DATA]); | |
1408 | len = nla_len(data[IFLA_MACVLAN_MACADDR_DATA]); | |
1409 | ||
1410 | nla_for_each_attr(nla, head, len, rem) { | |
79cf79ab MB |
1411 | addr = nla_data(nla); |
1412 | ret = macvlan_hash_add_source(vlan, addr); | |
1413 | if (ret) | |
1414 | return ret; | |
1415 | } | |
1416 | } else { | |
1417 | return -EINVAL; | |
1418 | } | |
1419 | ||
b863ceb7 PM |
1420 | return 0; |
1421 | } | |
1422 | ||
fc0663d6 | 1423 | int macvlan_common_newlink(struct net *src_net, struct net_device *dev, |
42ab19ee DA |
1424 | struct nlattr *tb[], struct nlattr *data[], |
1425 | struct netlink_ext_ack *extack) | |
b863ceb7 PM |
1426 | { |
1427 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1428 | struct macvlan_port *port; | |
1429 | struct net_device *lowerdev; | |
1430 | int err; | |
79cf79ab | 1431 | int macmode; |
aa5fd0fb | 1432 | bool create = false; |
b863ceb7 PM |
1433 | |
1434 | if (!tb[IFLA_LINK]) | |
1435 | return -EINVAL; | |
1436 | ||
81adee47 | 1437 | lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); |
b863ceb7 PM |
1438 | if (lowerdev == NULL) |
1439 | return -ENODEV; | |
1440 | ||
d70f2cf5 | 1441 | /* When creating macvlans or macvtaps on top of other macvlans - use |
b0832a29 | 1442 | * the real device as the lowerdev. |
a6ca5f1d | 1443 | */ |
d70f2cf5 KW |
1444 | if (netif_is_macvlan(lowerdev)) |
1445 | lowerdev = macvlan_dev_real_dev(lowerdev); | |
a6ca5f1d | 1446 | |
b863ceb7 PM |
1447 | if (!tb[IFLA_MTU]) |
1448 | dev->mtu = lowerdev->mtu; | |
1449 | else if (dev->mtu > lowerdev->mtu) | |
1450 | return -EINVAL; | |
1451 | ||
91572088 JW |
1452 | /* MTU range: 68 - lowerdev->max_mtu */ |
1453 | dev->min_mtu = ETH_MIN_MTU; | |
1454 | dev->max_mtu = lowerdev->max_mtu; | |
1455 | ||
b863ceb7 | 1456 | if (!tb[IFLA_ADDRESS]) |
7ce5d222 | 1457 | eth_hw_addr_random(dev); |
b863ceb7 | 1458 | |
913564fb | 1459 | if (!netif_is_macvlan_port(lowerdev)) { |
b863ceb7 PM |
1460 | err = macvlan_port_create(lowerdev); |
1461 | if (err < 0) | |
1462 | return err; | |
aa5fd0fb | 1463 | create = true; |
b863ceb7 | 1464 | } |
e052f7e6 | 1465 | port = macvlan_port_get_rtnl(lowerdev); |
b863ceb7 | 1466 | |
eb06acdc | 1467 | /* Only 1 macvlan device can be created in passthru mode */ |
43c2d578 | 1468 | if (macvlan_passthru(port)) { |
aa5fd0fb GF |
1469 | /* The macvlan port must be not created this time, |
1470 | * still goto destroy_macvlan_port for readability. | |
1471 | */ | |
1472 | err = -EINVAL; | |
1473 | goto destroy_macvlan_port; | |
1474 | } | |
eb06acdc | 1475 | |
b863ceb7 PM |
1476 | vlan->lowerdev = lowerdev; |
1477 | vlan->dev = dev; | |
1478 | vlan->port = port; | |
2be5c767 | 1479 | vlan->set_features = MACVLAN_FEATURES; |
b863ceb7 | 1480 | |
27c0b1a8 AB |
1481 | vlan->mode = MACVLAN_MODE_VEPA; |
1482 | if (data && data[IFLA_MACVLAN_MODE]) | |
1483 | vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); | |
1484 | ||
df8ef8f3 JF |
1485 | if (data && data[IFLA_MACVLAN_FLAGS]) |
1486 | vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); | |
1487 | ||
eb06acdc | 1488 | if (vlan->mode == MACVLAN_MODE_PASSTHRU) { |
aa5fd0fb GF |
1489 | if (port->count) { |
1490 | err = -EINVAL; | |
1491 | goto destroy_macvlan_port; | |
1492 | } | |
43c2d578 | 1493 | macvlan_set_passthru(port); |
8b98604e | 1494 | eth_hw_addr_inherit(dev, lowerdev); |
eb06acdc SS |
1495 | } |
1496 | ||
79cf79ab | 1497 | if (data && data[IFLA_MACVLAN_MACADDR_MODE]) { |
aa5fd0fb GF |
1498 | if (vlan->mode != MACVLAN_MODE_SOURCE) { |
1499 | err = -EINVAL; | |
1500 | goto destroy_macvlan_port; | |
1501 | } | |
79cf79ab MB |
1502 | macmode = nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE]); |
1503 | err = macvlan_changelink_sources(vlan, macmode, data); | |
1504 | if (err) | |
aa5fd0fb | 1505 | goto destroy_macvlan_port; |
79cf79ab MB |
1506 | } |
1507 | ||
d4bff72c TK |
1508 | vlan->bc_queue_len_req = MACVLAN_DEFAULT_BC_QUEUE_LEN; |
1509 | if (data && data[IFLA_MACVLAN_BC_QUEUE_LEN]) | |
1510 | vlan->bc_queue_len_req = nla_get_u32(data[IFLA_MACVLAN_BC_QUEUE_LEN]); | |
1511 | ||
47d4ab91 JF |
1512 | err = register_netdevice(dev); |
1513 | if (err < 0) | |
aa5fd0fb | 1514 | goto destroy_macvlan_port; |
47d4ab91 | 1515 | |
a6cc0cfa | 1516 | dev->priv_flags |= IFF_MACVLAN; |
42ab19ee | 1517 | err = netdev_upper_dev_link(lowerdev, dev, extack); |
7cd43db7 | 1518 | if (err) |
da37705c | 1519 | goto unregister_netdev; |
b863ceb7 | 1520 | |
233c7df0 | 1521 | list_add_tail_rcu(&vlan->list, &port->vlans); |
d4bff72c | 1522 | update_port_bc_queue_len(vlan->port); |
fc4a7489 | 1523 | netif_stacked_transfer_operstate(lowerdev, dev); |
de7d244d | 1524 | linkwatch_fire_event(dev); |
f16d3d57 | 1525 | |
b863ceb7 | 1526 | return 0; |
f16d3d57 | 1527 | |
da37705c | 1528 | unregister_netdev: |
d02fd6e7 | 1529 | /* macvlan_uninit would free the macvlan port */ |
da37705c | 1530 | unregister_netdevice(dev); |
d02fd6e7 | 1531 | return err; |
aa5fd0fb | 1532 | destroy_macvlan_port: |
d02fd6e7 GF |
1533 | /* the macvlan port may be freed by macvlan_uninit when fail to register. |
1534 | * so we destroy the macvlan port only when it's valid. | |
1535 | */ | |
23569b56 CW |
1536 | if (create && macvlan_port_get_rtnl(lowerdev)) { |
1537 | macvlan_flush_sources(port, vlan); | |
aa5fd0fb | 1538 | macvlan_port_destroy(port->dev); |
23569b56 | 1539 | } |
f16d3d57 | 1540 | return err; |
b863ceb7 | 1541 | } |
fc0663d6 | 1542 | EXPORT_SYMBOL_GPL(macvlan_common_newlink); |
b863ceb7 | 1543 | |
fc0663d6 | 1544 | static int macvlan_newlink(struct net *src_net, struct net_device *dev, |
7a3f4a18 MS |
1545 | struct nlattr *tb[], struct nlattr *data[], |
1546 | struct netlink_ext_ack *extack) | |
fc0663d6 | 1547 | { |
42ab19ee | 1548 | return macvlan_common_newlink(src_net, dev, tb, data, extack); |
fc0663d6 AB |
1549 | } |
1550 | ||
1551 | void macvlan_dellink(struct net_device *dev, struct list_head *head) | |
b863ceb7 PM |
1552 | { |
1553 | struct macvlan_dev *vlan = netdev_priv(dev); | |
b863ceb7 | 1554 | |
79cf79ab MB |
1555 | if (vlan->mode == MACVLAN_MODE_SOURCE) |
1556 | macvlan_flush_sources(vlan->port, vlan); | |
233c7df0 | 1557 | list_del_rcu(&vlan->list); |
d4bff72c | 1558 | update_port_bc_queue_len(vlan->port); |
23289a37 | 1559 | unregister_netdevice_queue(dev, head); |
7cd43db7 | 1560 | netdev_upper_dev_unlink(vlan->lowerdev, dev); |
b863ceb7 | 1561 | } |
fc0663d6 | 1562 | EXPORT_SYMBOL_GPL(macvlan_dellink); |
b863ceb7 | 1563 | |
27c0b1a8 | 1564 | static int macvlan_changelink(struct net_device *dev, |
ad744b22 MS |
1565 | struct nlattr *tb[], struct nlattr *data[], |
1566 | struct netlink_ext_ack *extack) | |
27c0b1a8 AB |
1567 | { |
1568 | struct macvlan_dev *vlan = netdev_priv(dev); | |
266e8347 MT |
1569 | enum macvlan_mode mode; |
1570 | bool set_mode = false; | |
79cf79ab MB |
1571 | enum macvlan_macaddr_mode macmode; |
1572 | int ret; | |
266e8347 MT |
1573 | |
1574 | /* Validate mode, but don't set yet: setting flags may fail. */ | |
1575 | if (data && data[IFLA_MACVLAN_MODE]) { | |
1576 | set_mode = true; | |
1577 | mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); | |
1578 | /* Passthrough mode can't be set or cleared dynamically */ | |
1579 | if ((mode == MACVLAN_MODE_PASSTHRU) != | |
1580 | (vlan->mode == MACVLAN_MODE_PASSTHRU)) | |
1581 | return -EINVAL; | |
79cf79ab MB |
1582 | if (vlan->mode == MACVLAN_MODE_SOURCE && |
1583 | vlan->mode != mode) | |
1584 | macvlan_flush_sources(vlan->port, vlan); | |
266e8347 | 1585 | } |
99ffc3e7 | 1586 | |
df8ef8f3 JF |
1587 | if (data && data[IFLA_MACVLAN_FLAGS]) { |
1588 | __u16 flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); | |
1589 | bool promisc = (flags ^ vlan->flags) & MACVLAN_FLAG_NOPROMISC; | |
43c2d578 | 1590 | if (macvlan_passthru(vlan->port) && promisc) { |
99ffc3e7 MT |
1591 | int err; |
1592 | ||
1593 | if (flags & MACVLAN_FLAG_NOPROMISC) | |
1594 | err = dev_set_promiscuity(vlan->lowerdev, -1); | |
1595 | else | |
1596 | err = dev_set_promiscuity(vlan->lowerdev, 1); | |
1597 | if (err < 0) | |
1598 | return err; | |
1599 | } | |
df8ef8f3 JF |
1600 | vlan->flags = flags; |
1601 | } | |
d4bff72c TK |
1602 | |
1603 | if (data && data[IFLA_MACVLAN_BC_QUEUE_LEN]) { | |
1604 | vlan->bc_queue_len_req = nla_get_u32(data[IFLA_MACVLAN_BC_QUEUE_LEN]); | |
1605 | update_port_bc_queue_len(vlan->port); | |
1606 | } | |
1607 | ||
266e8347 MT |
1608 | if (set_mode) |
1609 | vlan->mode = mode; | |
79cf79ab MB |
1610 | if (data && data[IFLA_MACVLAN_MACADDR_MODE]) { |
1611 | if (vlan->mode != MACVLAN_MODE_SOURCE) | |
1612 | return -EINVAL; | |
1613 | macmode = nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE]); | |
1614 | ret = macvlan_changelink_sources(vlan, macmode, data); | |
1615 | if (ret) | |
1616 | return ret; | |
1617 | } | |
27c0b1a8 AB |
1618 | return 0; |
1619 | } | |
1620 | ||
79cf79ab MB |
1621 | static size_t macvlan_get_size_mac(const struct macvlan_dev *vlan) |
1622 | { | |
1623 | if (vlan->macaddr_count == 0) | |
1624 | return 0; | |
1625 | return nla_total_size(0) /* IFLA_MACVLAN_MACADDR_DATA */ | |
1626 | + vlan->macaddr_count * nla_total_size(sizeof(u8) * ETH_ALEN); | |
1627 | } | |
1628 | ||
27c0b1a8 AB |
1629 | static size_t macvlan_get_size(const struct net_device *dev) |
1630 | { | |
79cf79ab MB |
1631 | struct macvlan_dev *vlan = netdev_priv(dev); |
1632 | ||
01fe944f ED |
1633 | return (0 |
1634 | + nla_total_size(4) /* IFLA_MACVLAN_MODE */ | |
1635 | + nla_total_size(2) /* IFLA_MACVLAN_FLAGS */ | |
79cf79ab MB |
1636 | + nla_total_size(4) /* IFLA_MACVLAN_MACADDR_COUNT */ |
1637 | + macvlan_get_size_mac(vlan) /* IFLA_MACVLAN_MACADDR */ | |
d4bff72c TK |
1638 | + nla_total_size(4) /* IFLA_MACVLAN_BC_QUEUE_LEN */ |
1639 | + nla_total_size(4) /* IFLA_MACVLAN_BC_QUEUE_LEN_USED */ | |
01fe944f | 1640 | ); |
27c0b1a8 AB |
1641 | } |
1642 | ||
79cf79ab MB |
1643 | static int macvlan_fill_info_macaddr(struct sk_buff *skb, |
1644 | const struct macvlan_dev *vlan, | |
1645 | const int i) | |
1646 | { | |
1647 | struct hlist_head *h = &vlan->port->vlan_source_hash[i]; | |
1648 | struct macvlan_source_entry *entry; | |
1649 | ||
5df1341e | 1650 | hlist_for_each_entry_rcu(entry, h, hlist, lockdep_rtnl_is_held()) { |
79cf79ab MB |
1651 | if (entry->vlan != vlan) |
1652 | continue; | |
1653 | if (nla_put(skb, IFLA_MACVLAN_MACADDR, ETH_ALEN, entry->addr)) | |
1654 | return 1; | |
1655 | } | |
1656 | return 0; | |
1657 | } | |
1658 | ||
27c0b1a8 AB |
1659 | static int macvlan_fill_info(struct sk_buff *skb, |
1660 | const struct net_device *dev) | |
1661 | { | |
1662 | struct macvlan_dev *vlan = netdev_priv(dev); | |
d4bff72c | 1663 | struct macvlan_port *port = vlan->port; |
79cf79ab MB |
1664 | int i; |
1665 | struct nlattr *nest; | |
27c0b1a8 | 1666 | |
ead9a76c DM |
1667 | if (nla_put_u32(skb, IFLA_MACVLAN_MODE, vlan->mode)) |
1668 | goto nla_put_failure; | |
df8ef8f3 JF |
1669 | if (nla_put_u16(skb, IFLA_MACVLAN_FLAGS, vlan->flags)) |
1670 | goto nla_put_failure; | |
79cf79ab MB |
1671 | if (nla_put_u32(skb, IFLA_MACVLAN_MACADDR_COUNT, vlan->macaddr_count)) |
1672 | goto nla_put_failure; | |
1673 | if (vlan->macaddr_count > 0) { | |
ae0be8de | 1674 | nest = nla_nest_start_noflag(skb, IFLA_MACVLAN_MACADDR_DATA); |
79cf79ab MB |
1675 | if (nest == NULL) |
1676 | goto nla_put_failure; | |
1677 | ||
1678 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) { | |
1679 | if (macvlan_fill_info_macaddr(skb, vlan, i)) | |
1680 | goto nla_put_failure; | |
1681 | } | |
1682 | nla_nest_end(skb, nest); | |
1683 | } | |
d4bff72c TK |
1684 | if (nla_put_u32(skb, IFLA_MACVLAN_BC_QUEUE_LEN, vlan->bc_queue_len_req)) |
1685 | goto nla_put_failure; | |
1686 | if (nla_put_u32(skb, IFLA_MACVLAN_BC_QUEUE_LEN_USED, port->bc_queue_len_used)) | |
1687 | goto nla_put_failure; | |
27c0b1a8 AB |
1688 | return 0; |
1689 | ||
1690 | nla_put_failure: | |
1691 | return -EMSGSIZE; | |
1692 | } | |
1693 | ||
1694 | static const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { | |
df8ef8f3 JF |
1695 | [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, |
1696 | [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 }, | |
79cf79ab MB |
1697 | [IFLA_MACVLAN_MACADDR_MODE] = { .type = NLA_U32 }, |
1698 | [IFLA_MACVLAN_MACADDR] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
1699 | [IFLA_MACVLAN_MACADDR_DATA] = { .type = NLA_NESTED }, | |
1700 | [IFLA_MACVLAN_MACADDR_COUNT] = { .type = NLA_U32 }, | |
d4bff72c TK |
1701 | [IFLA_MACVLAN_BC_QUEUE_LEN] = { .type = NLA_U32 }, |
1702 | [IFLA_MACVLAN_BC_QUEUE_LEN_USED] = { .type = NLA_REJECT }, | |
27c0b1a8 AB |
1703 | }; |
1704 | ||
fc0663d6 AB |
1705 | int macvlan_link_register(struct rtnl_link_ops *ops) |
1706 | { | |
1707 | /* common fields */ | |
fc0663d6 AB |
1708 | ops->validate = macvlan_validate; |
1709 | ops->maxtype = IFLA_MACVLAN_MAX; | |
1710 | ops->policy = macvlan_policy; | |
1711 | ops->changelink = macvlan_changelink; | |
1712 | ops->get_size = macvlan_get_size; | |
1713 | ops->fill_info = macvlan_fill_info; | |
1714 | ||
1715 | return rtnl_link_register(ops); | |
1716 | }; | |
1717 | EXPORT_SYMBOL_GPL(macvlan_link_register); | |
1718 | ||
eaca400f ND |
1719 | static struct net *macvlan_get_link_net(const struct net_device *dev) |
1720 | { | |
1721 | return dev_net(macvlan_dev_real_dev(dev)); | |
1722 | } | |
1723 | ||
fc0663d6 | 1724 | static struct rtnl_link_ops macvlan_link_ops = { |
b863ceb7 | 1725 | .kind = "macvlan", |
8a35747a | 1726 | .setup = macvlan_setup, |
b863ceb7 PM |
1727 | .newlink = macvlan_newlink, |
1728 | .dellink = macvlan_dellink, | |
eaca400f | 1729 | .get_link_net = macvlan_get_link_net, |
6fe3faf8 | 1730 | .priv_size = sizeof(struct macvlan_dev), |
b863ceb7 PM |
1731 | }; |
1732 | ||
d4bff72c TK |
1733 | static void update_port_bc_queue_len(struct macvlan_port *port) |
1734 | { | |
1735 | u32 max_bc_queue_len_req = 0; | |
1736 | struct macvlan_dev *vlan; | |
1737 | ||
1738 | list_for_each_entry(vlan, &port->vlans, list) { | |
1739 | if (vlan->bc_queue_len_req > max_bc_queue_len_req) | |
1740 | max_bc_queue_len_req = vlan->bc_queue_len_req; | |
1741 | } | |
1742 | port->bc_queue_len_used = max_bc_queue_len_req; | |
1743 | } | |
1744 | ||
b863ceb7 PM |
1745 | static int macvlan_device_event(struct notifier_block *unused, |
1746 | unsigned long event, void *ptr) | |
1747 | { | |
351638e7 | 1748 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
b863ceb7 PM |
1749 | struct macvlan_dev *vlan, *next; |
1750 | struct macvlan_port *port; | |
226bd341 | 1751 | LIST_HEAD(list_kill); |
b863ceb7 | 1752 | |
913564fb | 1753 | if (!netif_is_macvlan_port(dev)) |
b863ceb7 PM |
1754 | return NOTIFY_DONE; |
1755 | ||
e052f7e6 | 1756 | port = macvlan_port_get_rtnl(dev); |
a35e2c1b | 1757 | |
b863ceb7 | 1758 | switch (event) { |
de7d244d | 1759 | case NETDEV_UP: |
80fd2d6c | 1760 | case NETDEV_DOWN: |
b863ceb7 PM |
1761 | case NETDEV_CHANGE: |
1762 | list_for_each_entry(vlan, &port->vlans, list) | |
fc4a7489 PM |
1763 | netif_stacked_transfer_operstate(vlan->lowerdev, |
1764 | vlan->dev); | |
b863ceb7 PM |
1765 | break; |
1766 | case NETDEV_FEAT_CHANGE: | |
1767 | list_for_each_entry(vlan, &port->vlans, list) { | |
6df6398f | 1768 | netif_inherit_tso_max(vlan->dev, dev); |
797f87f8 | 1769 | netdev_update_features(vlan->dev); |
b863ceb7 PM |
1770 | } |
1771 | break; | |
3763e7ef | 1772 | case NETDEV_CHANGEMTU: |
1773 | list_for_each_entry(vlan, &port->vlans, list) { | |
1774 | if (vlan->dev->mtu <= dev->mtu) | |
1775 | continue; | |
1776 | dev_set_mtu(vlan->dev, dev->mtu); | |
1777 | } | |
e289fd28 | 1778 | break; |
1779 | case NETDEV_CHANGEADDR: | |
43c2d578 | 1780 | if (!macvlan_passthru(port)) |
e289fd28 | 1781 | return NOTIFY_DONE; |
1782 | ||
1783 | vlan = list_first_entry_or_null(&port->vlans, | |
1784 | struct macvlan_dev, | |
1785 | list); | |
1786 | ||
4dee15b4 | 1787 | if (vlan && macvlan_sync_address(vlan->dev, dev->dev_addr)) |
e289fd28 | 1788 | return NOTIFY_BAD; |
1789 | ||
3763e7ef | 1790 | break; |
b863ceb7 | 1791 | case NETDEV_UNREGISTER: |
3b27e105 DL |
1792 | /* twiddle thumbs on netns device moves */ |
1793 | if (dev->reg_state != NETREG_UNREGISTERING) | |
1794 | break; | |
1795 | ||
b863ceb7 | 1796 | list_for_each_entry_safe(vlan, next, &port->vlans, list) |
226bd341 ED |
1797 | vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); |
1798 | unregister_netdevice_many(&list_kill); | |
b863ceb7 | 1799 | break; |
1c01fe14 | 1800 | case NETDEV_PRE_TYPE_CHANGE: |
26d3f69c | 1801 | /* Forbid underlying device to change its type. */ |
1c01fe14 | 1802 | return NOTIFY_BAD; |
4c991255 VY |
1803 | |
1804 | case NETDEV_NOTIFY_PEERS: | |
1805 | case NETDEV_BONDING_FAILOVER: | |
1806 | case NETDEV_RESEND_IGMP: | |
1807 | /* Propagate to all vlans */ | |
1808 | list_for_each_entry(vlan, &port->vlans, list) | |
1809 | call_netdevice_notifiers(event, vlan->dev); | |
b863ceb7 PM |
1810 | } |
1811 | return NOTIFY_DONE; | |
1812 | } | |
1813 | ||
1814 | static struct notifier_block macvlan_notifier_block __read_mostly = { | |
1815 | .notifier_call = macvlan_device_event, | |
1816 | }; | |
1817 | ||
1818 | static int __init macvlan_init_module(void) | |
1819 | { | |
1820 | int err; | |
1821 | ||
1822 | register_netdevice_notifier(&macvlan_notifier_block); | |
b863ceb7 | 1823 | |
fc0663d6 | 1824 | err = macvlan_link_register(&macvlan_link_ops); |
b863ceb7 PM |
1825 | if (err < 0) |
1826 | goto err1; | |
1827 | return 0; | |
1828 | err1: | |
b863ceb7 PM |
1829 | unregister_netdevice_notifier(&macvlan_notifier_block); |
1830 | return err; | |
1831 | } | |
1832 | ||
1833 | static void __exit macvlan_cleanup_module(void) | |
1834 | { | |
1835 | rtnl_link_unregister(&macvlan_link_ops); | |
b863ceb7 PM |
1836 | unregister_netdevice_notifier(&macvlan_notifier_block); |
1837 | } | |
1838 | ||
1839 | module_init(macvlan_init_module); | |
1840 | module_exit(macvlan_cleanup_module); | |
1841 | ||
1842 | MODULE_LICENSE("GPL"); | |
1843 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); | |
1844 | MODULE_DESCRIPTION("Driver for MAC address based VLANs"); | |
1845 | MODULE_ALIAS_RTNL_LINK("macvlan"); |