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; |
954d1fa1 | 50 | int bc_cutoff; |
43c2d578 | 51 | u32 flags; |
5e3c516b | 52 | int count; |
79cf79ab | 53 | struct hlist_head vlan_source_hash[MACVLAN_HASH_SIZE]; |
d45276e7 | 54 | DECLARE_BITMAP(bc_filter, MACVLAN_MC_FILTER_SZ); |
9c127a01 | 55 | DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ); |
18c8c54d | 56 | unsigned char perm_addr[ETH_ALEN]; |
79cf79ab MB |
57 | }; |
58 | ||
59 | struct macvlan_source_entry { | |
60 | struct hlist_node hlist; | |
61 | struct macvlan_dev *vlan; | |
62 | unsigned char addr[6+2] __aligned(sizeof(u16)); | |
63 | struct rcu_head rcu; | |
b863ceb7 PM |
64 | }; |
65 | ||
412ca155 HX |
66 | struct macvlan_skb_cb { |
67 | const struct macvlan_dev *src; | |
68 | }; | |
69 | ||
70 | #define MACVLAN_SKB_CB(__skb) ((struct macvlan_skb_cb *)&((__skb)->cb[0])) | |
71 | ||
d5cd9244 | 72 | static void macvlan_port_destroy(struct net_device *dev); |
d4bff72c | 73 | static void update_port_bc_queue_len(struct macvlan_port *port); |
d5cd9244 | 74 | |
43c2d578 VY |
75 | static inline bool macvlan_passthru(const struct macvlan_port *port) |
76 | { | |
77 | return port->flags & MACVLAN_F_PASSTHRU; | |
78 | } | |
79 | ||
80 | static inline void macvlan_set_passthru(struct macvlan_port *port) | |
81 | { | |
82 | port->flags |= MACVLAN_F_PASSTHRU; | |
83 | } | |
84 | ||
18c8c54d VY |
85 | static inline bool macvlan_addr_change(const struct macvlan_port *port) |
86 | { | |
87 | return port->flags & MACVLAN_F_ADDRCHANGE; | |
88 | } | |
89 | ||
90 | static inline void macvlan_set_addr_change(struct macvlan_port *port) | |
91 | { | |
92 | port->flags |= MACVLAN_F_ADDRCHANGE; | |
93 | } | |
94 | ||
95 | static inline void macvlan_clear_addr_change(struct macvlan_port *port) | |
96 | { | |
97 | port->flags &= ~MACVLAN_F_ADDRCHANGE; | |
98 | } | |
99 | ||
79cf79ab MB |
100 | /* Hash Ethernet address */ |
101 | static u32 macvlan_eth_hash(const unsigned char *addr) | |
102 | { | |
103 | u64 value = get_unaligned((u64 *)addr); | |
104 | ||
105 | /* only want 6 bytes */ | |
106 | #ifdef __BIG_ENDIAN | |
107 | value >>= 16; | |
108 | #else | |
109 | value <<= 16; | |
110 | #endif | |
111 | return hash_64(value, MACVLAN_HASH_BITS); | |
112 | } | |
113 | ||
e052f7e6 ED |
114 | static struct macvlan_port *macvlan_port_get_rcu(const struct net_device *dev) |
115 | { | |
116 | return rcu_dereference(dev->rx_handler_data); | |
117 | } | |
118 | ||
119 | static struct macvlan_port *macvlan_port_get_rtnl(const struct net_device *dev) | |
120 | { | |
121 | return rtnl_dereference(dev->rx_handler_data); | |
122 | } | |
123 | ||
b863ceb7 PM |
124 | static struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, |
125 | const unsigned char *addr) | |
126 | { | |
127 | struct macvlan_dev *vlan; | |
79cf79ab | 128 | u32 idx = macvlan_eth_hash(addr); |
b863ceb7 | 129 | |
58e64a31 WY |
130 | hlist_for_each_entry_rcu(vlan, &port->vlan_hash[idx], hlist, |
131 | lockdep_rtnl_is_held()) { | |
a6700db1 | 132 | if (ether_addr_equal_64bits(vlan->dev->dev_addr, addr)) |
b863ceb7 PM |
133 | return vlan; |
134 | } | |
135 | return NULL; | |
136 | } | |
137 | ||
79cf79ab MB |
138 | static struct macvlan_source_entry *macvlan_hash_lookup_source( |
139 | const struct macvlan_dev *vlan, | |
140 | const unsigned char *addr) | |
141 | { | |
142 | struct macvlan_source_entry *entry; | |
143 | u32 idx = macvlan_eth_hash(addr); | |
144 | struct hlist_head *h = &vlan->port->vlan_source_hash[idx]; | |
145 | ||
5df1341e | 146 | hlist_for_each_entry_rcu(entry, h, hlist, lockdep_rtnl_is_held()) { |
79cf79ab MB |
147 | if (ether_addr_equal_64bits(entry->addr, addr) && |
148 | entry->vlan == vlan) | |
149 | return entry; | |
150 | } | |
151 | return NULL; | |
152 | } | |
153 | ||
154 | static int macvlan_hash_add_source(struct macvlan_dev *vlan, | |
155 | const unsigned char *addr) | |
156 | { | |
157 | struct macvlan_port *port = vlan->port; | |
158 | struct macvlan_source_entry *entry; | |
159 | struct hlist_head *h; | |
160 | ||
161 | entry = macvlan_hash_lookup_source(vlan, addr); | |
162 | if (entry) | |
163 | return 0; | |
164 | ||
165 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); | |
166 | if (!entry) | |
167 | return -ENOMEM; | |
168 | ||
169 | ether_addr_copy(entry->addr, addr); | |
170 | entry->vlan = vlan; | |
171 | h = &port->vlan_source_hash[macvlan_eth_hash(addr)]; | |
172 | hlist_add_head_rcu(&entry->hlist, h); | |
173 | vlan->macaddr_count++; | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
f9ac30f0 EB |
178 | static void macvlan_hash_add(struct macvlan_dev *vlan) |
179 | { | |
180 | struct macvlan_port *port = vlan->port; | |
181 | const unsigned char *addr = vlan->dev->dev_addr; | |
79cf79ab | 182 | u32 idx = macvlan_eth_hash(addr); |
f9ac30f0 | 183 | |
79cf79ab MB |
184 | hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[idx]); |
185 | } | |
186 | ||
187 | static void macvlan_hash_del_source(struct macvlan_source_entry *entry) | |
188 | { | |
189 | hlist_del_rcu(&entry->hlist); | |
190 | kfree_rcu(entry, rcu); | |
f9ac30f0 EB |
191 | } |
192 | ||
449f4544 | 193 | static void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) |
f9ac30f0 EB |
194 | { |
195 | hlist_del_rcu(&vlan->hlist); | |
449f4544 ED |
196 | if (sync) |
197 | synchronize_rcu(); | |
f9ac30f0 EB |
198 | } |
199 | ||
200 | static void macvlan_hash_change_addr(struct macvlan_dev *vlan, | |
201 | const unsigned char *addr) | |
202 | { | |
449f4544 | 203 | macvlan_hash_del(vlan, true); |
f9ac30f0 EB |
204 | /* Now that we are unhashed it is safe to change the device |
205 | * address without confusing packet delivery. | |
206 | */ | |
2f23e5ce | 207 | eth_hw_addr_set(vlan->dev, addr); |
f9ac30f0 EB |
208 | macvlan_hash_add(vlan); |
209 | } | |
210 | ||
d94d0254 GF |
211 | static bool macvlan_addr_busy(const struct macvlan_port *port, |
212 | const unsigned char *addr) | |
f9ac30f0 | 213 | { |
18c8c54d | 214 | /* Test to see if the specified address is |
f9ac30f0 EB |
215 | * currently in use by the underlying device or |
216 | * another macvlan. | |
217 | */ | |
18c8c54d | 218 | if (!macvlan_passthru(port) && !macvlan_addr_change(port) && |
e696cda7 | 219 | ether_addr_equal_64bits(port->dev->dev_addr, addr)) |
d94d0254 | 220 | return true; |
f9ac30f0 EB |
221 | |
222 | if (macvlan_hash_lookup(port, addr)) | |
d94d0254 | 223 | return true; |
f9ac30f0 | 224 | |
d94d0254 | 225 | return false; |
f9ac30f0 EB |
226 | } |
227 | ||
a1e514c5 | 228 | |
fc0663d6 AB |
229 | static int macvlan_broadcast_one(struct sk_buff *skb, |
230 | const struct macvlan_dev *vlan, | |
618e1b74 | 231 | const struct ethhdr *eth, bool local) |
a1e514c5 | 232 | { |
fc0663d6 | 233 | struct net_device *dev = vlan->dev; |
a1e514c5 | 234 | |
618e1b74 | 235 | if (local) |
412ca155 | 236 | return __dev_forward_skb(dev, skb); |
618e1b74 | 237 | |
a1e514c5 | 238 | skb->dev = dev; |
a6700db1 | 239 | if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast)) |
a1e514c5 AB |
240 | skb->pkt_type = PACKET_BROADCAST; |
241 | else | |
242 | skb->pkt_type = PACKET_MULTICAST; | |
243 | ||
412ca155 | 244 | return 0; |
a1e514c5 AB |
245 | } |
246 | ||
3807ff58 ED |
247 | static u32 macvlan_hash_mix(const struct macvlan_dev *vlan) |
248 | { | |
249 | return (u32)(((unsigned long)vlan) >> L1_CACHE_SHIFT); | |
250 | } | |
251 | ||
252 | ||
253 | static unsigned int mc_hash(const struct macvlan_dev *vlan, | |
254 | const unsigned char *addr) | |
cd431e73 ED |
255 | { |
256 | u32 val = __get_unaligned_cpu32(addr + 2); | |
257 | ||
3807ff58 | 258 | val ^= macvlan_hash_mix(vlan); |
cd431e73 ED |
259 | return hash_32(val, MACVLAN_MC_FILTER_BITS); |
260 | } | |
261 | ||
b863ceb7 | 262 | static void macvlan_broadcast(struct sk_buff *skb, |
618e1b74 AB |
263 | const struct macvlan_port *port, |
264 | struct net_device *src, | |
265 | enum macvlan_mode mode) | |
b863ceb7 | 266 | { |
1712b2ff | 267 | const struct ethhdr *eth = eth_hdr(skb); |
b863ceb7 | 268 | const struct macvlan_dev *vlan; |
b863ceb7 PM |
269 | struct sk_buff *nskb; |
270 | unsigned int i; | |
a1e514c5 | 271 | int err; |
3807ff58 | 272 | unsigned int hash; |
b863ceb7 | 273 | |
efbbced3 PM |
274 | if (skb->protocol == htons(ETH_P_PAUSE)) |
275 | return; | |
276 | ||
bb23ffa1 CJ |
277 | hash_for_each_rcu(port->vlan_hash, i, vlan, hlist) { |
278 | if (vlan->dev == src || !(vlan->mode & mode)) | |
279 | continue; | |
280 | ||
281 | hash = mc_hash(vlan, eth->h_dest); | |
282 | if (!test_bit(hash, vlan->mc_filter)) | |
283 | continue; | |
284 | ||
285 | err = NET_RX_DROP; | |
286 | nskb = skb_clone(skb, GFP_ATOMIC); | |
287 | if (likely(nskb)) | |
288 | err = macvlan_broadcast_one(nskb, vlan, eth, | |
412ca155 | 289 | mode == MACVLAN_MODE_BRIDGE) ?: |
566214f4 | 290 | netif_rx(nskb); |
bb23ffa1 CJ |
291 | macvlan_count_rx(vlan, skb->len + ETH_HLEN, |
292 | err == NET_RX_SUCCESS, true); | |
b863ceb7 PM |
293 | } |
294 | } | |
295 | ||
d45276e7 HX |
296 | static void macvlan_multicast_rx(const struct macvlan_port *port, |
297 | const struct macvlan_dev *src, | |
298 | struct sk_buff *skb) | |
299 | { | |
300 | if (!src) | |
301 | /* frame comes from an external address */ | |
302 | macvlan_broadcast(skb, port, NULL, | |
303 | MACVLAN_MODE_PRIVATE | | |
304 | MACVLAN_MODE_VEPA | | |
305 | MACVLAN_MODE_PASSTHRU| | |
306 | MACVLAN_MODE_BRIDGE); | |
307 | else if (src->mode == MACVLAN_MODE_VEPA) | |
308 | /* flood to everyone except source */ | |
309 | macvlan_broadcast(skb, port, src->dev, | |
310 | MACVLAN_MODE_VEPA | | |
311 | MACVLAN_MODE_BRIDGE); | |
312 | else | |
313 | /* | |
314 | * flood only to VEPA ports, bridge ports | |
315 | * already saw the frame on the way out. | |
316 | */ | |
317 | macvlan_broadcast(skb, port, src->dev, | |
318 | MACVLAN_MODE_VEPA); | |
319 | } | |
320 | ||
412ca155 | 321 | static void macvlan_process_broadcast(struct work_struct *w) |
b863ceb7 | 322 | { |
412ca155 HX |
323 | struct macvlan_port *port = container_of(w, struct macvlan_port, |
324 | bc_work); | |
325 | struct sk_buff *skb; | |
326 | struct sk_buff_head list; | |
327 | ||
fe0ca732 | 328 | __skb_queue_head_init(&list); |
412ca155 HX |
329 | |
330 | spin_lock_bh(&port->bc_queue.lock); | |
331 | skb_queue_splice_tail_init(&port->bc_queue, &list); | |
332 | spin_unlock_bh(&port->bc_queue.lock); | |
333 | ||
334 | while ((skb = __skb_dequeue(&list))) { | |
335 | const struct macvlan_dev *src = MACVLAN_SKB_CB(skb)->src; | |
336 | ||
337 | rcu_read_lock(); | |
d45276e7 | 338 | macvlan_multicast_rx(port, src, skb); |
412ca155 HX |
339 | rcu_read_unlock(); |
340 | ||
260916df HX |
341 | if (src) |
342 | dev_put(src->dev); | |
bf97403a | 343 | consume_skb(skb); |
ce9a4186 MB |
344 | |
345 | cond_resched(); | |
412ca155 HX |
346 | } |
347 | } | |
348 | ||
349 | static void macvlan_broadcast_enqueue(struct macvlan_port *port, | |
260916df | 350 | const struct macvlan_dev *src, |
412ca155 HX |
351 | struct sk_buff *skb) |
352 | { | |
e676f197 | 353 | struct sk_buff *nskb; |
412ca155 HX |
354 | int err = -ENOMEM; |
355 | ||
e676f197 HX |
356 | nskb = skb_clone(skb, GFP_ATOMIC); |
357 | if (!nskb) | |
412ca155 HX |
358 | goto err; |
359 | ||
260916df HX |
360 | MACVLAN_SKB_CB(nskb)->src = src; |
361 | ||
412ca155 | 362 | spin_lock(&port->bc_queue.lock); |
d4bff72c | 363 | if (skb_queue_len(&port->bc_queue) < port->bc_queue_len_used) { |
260916df HX |
364 | if (src) |
365 | dev_hold(src->dev); | |
e676f197 | 366 | __skb_queue_tail(&port->bc_queue, nskb); |
412ca155 HX |
367 | err = 0; |
368 | } | |
369 | spin_unlock(&port->bc_queue.lock); | |
370 | ||
3d6642ea | 371 | queue_work(system_unbound_wq, &port->bc_work); |
1d7ea556 | 372 | |
412ca155 | 373 | if (err) |
e676f197 | 374 | goto free_nskb; |
412ca155 | 375 | |
412ca155 HX |
376 | return; |
377 | ||
e676f197 HX |
378 | free_nskb: |
379 | kfree_skb(nskb); | |
412ca155 | 380 | err: |
625788b5 | 381 | dev_core_stats_rx_dropped_inc(skb->dev); |
412ca155 HX |
382 | } |
383 | ||
79cf79ab MB |
384 | static void macvlan_flush_sources(struct macvlan_port *port, |
385 | struct macvlan_dev *vlan) | |
386 | { | |
bb23ffa1 CJ |
387 | struct macvlan_source_entry *entry; |
388 | struct hlist_node *next; | |
79cf79ab MB |
389 | int i; |
390 | ||
bb23ffa1 CJ |
391 | hash_for_each_safe(port->vlan_source_hash, i, next, entry, hlist) |
392 | if (entry->vlan == vlan) | |
393 | macvlan_hash_del_source(entry); | |
79cf79ab | 394 | |
79cf79ab MB |
395 | vlan->macaddr_count = 0; |
396 | } | |
397 | ||
398 | static void macvlan_forward_source_one(struct sk_buff *skb, | |
399 | struct macvlan_dev *vlan) | |
400 | { | |
401 | struct sk_buff *nskb; | |
402 | struct net_device *dev; | |
403 | int len; | |
404 | int ret; | |
405 | ||
406 | dev = vlan->dev; | |
407 | if (unlikely(!(dev->flags & IFF_UP))) | |
408 | return; | |
409 | ||
410 | nskb = skb_clone(skb, GFP_ATOMIC); | |
411 | if (!nskb) | |
412 | return; | |
413 | ||
414 | len = nskb->len + ETH_HLEN; | |
415 | nskb->dev = dev; | |
c8c41ea1 AD |
416 | |
417 | if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, dev->dev_addr)) | |
418 | nskb->pkt_type = PACKET_HOST; | |
79cf79ab | 419 | |
baebdf48 | 420 | ret = __netif_rx(nskb); |
4c979935 | 421 | macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, false); |
79cf79ab MB |
422 | } |
423 | ||
427f0c8c | 424 | static bool macvlan_forward_source(struct sk_buff *skb, |
79cf79ab MB |
425 | struct macvlan_port *port, |
426 | const unsigned char *addr) | |
427 | { | |
428 | struct macvlan_source_entry *entry; | |
429 | u32 idx = macvlan_eth_hash(addr); | |
430 | struct hlist_head *h = &port->vlan_source_hash[idx]; | |
427f0c8c | 431 | bool consume = false; |
79cf79ab MB |
432 | |
433 | hlist_for_each_entry_rcu(entry, h, hlist) { | |
427f0c8c JB |
434 | if (ether_addr_equal_64bits(entry->addr, addr)) { |
435 | if (entry->vlan->flags & MACVLAN_FLAG_NODST) | |
436 | consume = true; | |
fc51f2b7 | 437 | macvlan_forward_source_one(skb, entry->vlan); |
427f0c8c | 438 | } |
79cf79ab | 439 | } |
427f0c8c JB |
440 | |
441 | return consume; | |
79cf79ab MB |
442 | } |
443 | ||
412ca155 HX |
444 | /* called under rcu_read_lock() from netif_receive_skb */ |
445 | static rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) | |
446 | { | |
447 | struct macvlan_port *port; | |
448 | struct sk_buff *skb = *pskb; | |
449 | const struct ethhdr *eth = eth_hdr(skb); | |
450 | const struct macvlan_dev *vlan; | |
451 | const struct macvlan_dev *src; | |
452 | struct net_device *dev; | |
453 | unsigned int len = 0; | |
d1dd9119 | 454 | int ret; |
455 | rx_handler_result_t handle_res; | |
412ca155 | 456 | |
81f3dc93 AS |
457 | /* Packets from dev_loopback_xmit() do not have L2 header, bail out */ |
458 | if (unlikely(skb->pkt_type == PACKET_LOOPBACK)) | |
459 | return RX_HANDLER_PASS; | |
460 | ||
412ca155 HX |
461 | port = macvlan_port_get_rcu(skb->dev); |
462 | if (is_multicast_ether_addr(eth->h_dest)) { | |
9c127a01 HX |
463 | unsigned int hash; |
464 | ||
19bcf9f2 | 465 | skb = ip_check_defrag(dev_net(skb->dev), skb, IP_DEFRAG_MACVLAN); |
412ca155 HX |
466 | if (!skb) |
467 | return RX_HANDLER_CONSUMED; | |
e639b8d8 | 468 | *pskb = skb; |
412ca155 | 469 | eth = eth_hdr(skb); |
e16b8598 MW |
470 | if (macvlan_forward_source(skb, port, eth->h_source)) { |
471 | kfree_skb(skb); | |
427f0c8c | 472 | return RX_HANDLER_CONSUMED; |
e16b8598 | 473 | } |
412ca155 HX |
474 | src = macvlan_hash_lookup(port, eth->h_source); |
475 | if (src && src->mode != MACVLAN_MODE_VEPA && | |
476 | src->mode != MACVLAN_MODE_BRIDGE) { | |
729e72a1 | 477 | /* forward to original port. */ |
478 | vlan = src; | |
412ca155 | 479 | ret = macvlan_broadcast_one(skb, vlan, eth, 0) ?: |
baebdf48 | 480 | __netif_rx(skb); |
d1dd9119 | 481 | handle_res = RX_HANDLER_CONSUMED; |
729e72a1 | 482 | goto out; |
483 | } | |
484 | ||
9c127a01 | 485 | hash = mc_hash(NULL, eth->h_dest); |
d45276e7 | 486 | if (test_bit(hash, port->bc_filter)) |
9c127a01 | 487 | macvlan_broadcast_enqueue(port, src, skb); |
d45276e7 HX |
488 | else if (test_bit(hash, port->mc_filter)) |
489 | macvlan_multicast_rx(port, src, skb); | |
412ca155 | 490 | |
8a4eb573 | 491 | return RX_HANDLER_PASS; |
b863ceb7 PM |
492 | } |
493 | ||
e16b8598 MW |
494 | if (macvlan_forward_source(skb, port, eth->h_source)) { |
495 | kfree_skb(skb); | |
427f0c8c | 496 | return RX_HANDLER_CONSUMED; |
e16b8598 | 497 | } |
43c2d578 | 498 | if (macvlan_passthru(port)) |
233c7df0 JP |
499 | vlan = list_first_or_null_rcu(&port->vlans, |
500 | struct macvlan_dev, list); | |
eb06acdc SS |
501 | else |
502 | vlan = macvlan_hash_lookup(port, eth->h_dest); | |
dd6b9c2c | 503 | if (!vlan || vlan->mode == MACVLAN_MODE_SOURCE) |
8a4eb573 | 504 | return RX_HANDLER_PASS; |
b863ceb7 PM |
505 | |
506 | dev = vlan->dev; | |
507 | if (unlikely(!(dev->flags & IFF_UP))) { | |
508 | kfree_skb(skb); | |
8a4eb573 | 509 | return RX_HANDLER_CONSUMED; |
b863ceb7 | 510 | } |
a1e514c5 | 511 | len = skb->len + ETH_HLEN; |
b863ceb7 | 512 | skb = skb_share_check(skb, GFP_ATOMIC); |
d1dd9119 | 513 | if (!skb) { |
514 | ret = NET_RX_DROP; | |
515 | handle_res = RX_HANDLER_CONSUMED; | |
ba01877f | 516 | goto out; |
d1dd9119 | 517 | } |
b863ceb7 | 518 | |
e639b8d8 | 519 | *pskb = skb; |
b863ceb7 PM |
520 | skb->dev = dev; |
521 | skb->pkt_type = PACKET_HOST; | |
522 | ||
d1dd9119 | 523 | ret = NET_RX_SUCCESS; |
524 | handle_res = RX_HANDLER_ANOTHER; | |
ba01877f | 525 | out: |
4c979935 | 526 | macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, false); |
d1dd9119 | 527 | return handle_res; |
b863ceb7 PM |
528 | } |
529 | ||
618e1b74 AB |
530 | static int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) |
531 | { | |
532 | const struct macvlan_dev *vlan = netdev_priv(dev); | |
533 | const struct macvlan_port *port = vlan->port; | |
534 | const struct macvlan_dev *dest; | |
535 | ||
536 | if (vlan->mode == MACVLAN_MODE_BRIDGE) { | |
1712b2ff | 537 | const struct ethhdr *eth = skb_eth_hdr(skb); |
618e1b74 AB |
538 | |
539 | /* send to other bridge ports directly */ | |
540 | if (is_multicast_ether_addr(eth->h_dest)) { | |
1712b2ff | 541 | skb_reset_mac_header(skb); |
618e1b74 AB |
542 | macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); |
543 | goto xmit_world; | |
544 | } | |
545 | ||
546 | dest = macvlan_hash_lookup(port, eth->h_dest); | |
547 | if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { | |
a37dd333 | 548 | /* send to lowerdev first for its network taps */ |
cb2d0f3e | 549 | dev_forward_skb(vlan->lowerdev, skb); |
618e1b74 AB |
550 | |
551 | return NET_XMIT_SUCCESS; | |
552 | } | |
553 | } | |
618e1b74 | 554 | xmit_world: |
59b9997b | 555 | skb->dev = vlan->lowerdev; |
eadec877 AD |
556 | return dev_queue_xmit_accel(skb, |
557 | netdev_get_sb_channel(dev) ? dev : NULL); | |
618e1b74 AB |
558 | } |
559 | ||
688cea83 | 560 | static inline netdev_tx_t macvlan_netpoll_send_skb(struct macvlan_dev *vlan, struct sk_buff *skb) |
561 | { | |
562 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
f78ed220 | 563 | return netpoll_send_skb(vlan->netpoll, skb); |
688cea83 | 564 | #else |
565 | BUG(); | |
688cea83 | 566 | return NETDEV_TX_OK; |
f78ed220 | 567 | #endif |
688cea83 | 568 | } |
569 | ||
0db901bd | 570 | static netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, |
571 | struct net_device *dev) | |
b863ceb7 | 572 | { |
81d4e91c | 573 | struct macvlan_dev *vlan = netdev_priv(dev); |
b863ceb7 PM |
574 | unsigned int len = skb->len; |
575 | int ret; | |
688cea83 | 576 | |
577 | if (unlikely(netpoll_tx_running(dev))) | |
578 | return macvlan_netpoll_send_skb(vlan, skb); | |
b863ceb7 | 579 | |
81d4e91c | 580 | ret = macvlan_queue_xmit(skb, dev); |
a6cc0cfa | 581 | |
2d6c9ffc | 582 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
cdf3e274 | 583 | struct vlan_pcpu_stats *pcpu_stats; |
2c114553 | 584 | |
8ffab51b ED |
585 | pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); |
586 | u64_stats_update_begin(&pcpu_stats->syncp); | |
09cca53c ED |
587 | u64_stats_inc(&pcpu_stats->tx_packets); |
588 | u64_stats_add(&pcpu_stats->tx_bytes, len); | |
8ffab51b ED |
589 | u64_stats_update_end(&pcpu_stats->syncp); |
590 | } else { | |
591 | this_cpu_inc(vlan->pcpu_stats->tx_dropped); | |
592 | } | |
cbbef5e1 | 593 | return ret; |
b863ceb7 PM |
594 | } |
595 | ||
596 | static int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, | |
3b04ddde SH |
597 | unsigned short type, const void *daddr, |
598 | const void *saddr, unsigned len) | |
b863ceb7 PM |
599 | { |
600 | const struct macvlan_dev *vlan = netdev_priv(dev); | |
601 | struct net_device *lowerdev = vlan->lowerdev; | |
602 | ||
0c4e8581 SH |
603 | return dev_hard_header(skb, lowerdev, type, daddr, |
604 | saddr ? : dev->dev_addr, len); | |
b863ceb7 PM |
605 | } |
606 | ||
3b04ddde SH |
607 | static const struct header_ops macvlan_hard_header_ops = { |
608 | .create = macvlan_hard_header, | |
3b04ddde | 609 | .parse = eth_header_parse, |
3b04ddde SH |
610 | .cache = eth_header_cache, |
611 | .cache_update = eth_header_cache_update, | |
612 | }; | |
613 | ||
b863ceb7 PM |
614 | static int macvlan_open(struct net_device *dev) |
615 | { | |
616 | struct macvlan_dev *vlan = netdev_priv(dev); | |
b863ceb7 PM |
617 | struct net_device *lowerdev = vlan->lowerdev; |
618 | int err; | |
619 | ||
43c2d578 | 620 | if (macvlan_passthru(vlan->port)) { |
78738141 MT |
621 | if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) { |
622 | err = dev_set_promiscuity(lowerdev, 1); | |
623 | if (err < 0) | |
624 | goto out; | |
625 | } | |
eb06acdc SS |
626 | goto hash_add; |
627 | } | |
628 | ||
59f997b0 | 629 | err = -EADDRINUSE; |
7d775f63 AD |
630 | if (macvlan_addr_busy(vlan->port, dev->dev_addr)) |
631 | goto out; | |
632 | ||
633 | /* Attempt to populate accel_priv which is used to offload the L2 | |
634 | * forwarding requests for unicast packets. | |
635 | */ | |
81d4e91c | 636 | if (lowerdev->features & NETIF_F_HW_L2FW_DOFFLOAD) |
7d775f63 | 637 | vlan->accel_priv = |
a6cc0cfa JF |
638 | lowerdev->netdev_ops->ndo_dfwd_add_station(lowerdev, dev); |
639 | ||
81d4e91c AD |
640 | /* If earlier attempt to offload failed, or accel_priv is not |
641 | * populated we must add the unicast address to the lower device. | |
642 | */ | |
643 | if (IS_ERR_OR_NULL(vlan->accel_priv)) { | |
644 | vlan->accel_priv = NULL; | |
645 | err = dev_uc_add(lowerdev, dev->dev_addr); | |
646 | if (err < 0) | |
647 | goto out; | |
a6cc0cfa JF |
648 | } |
649 | ||
b89fb7da WC |
650 | if (dev->flags & IFF_ALLMULTI) { |
651 | err = dev_set_allmulti(lowerdev, 1); | |
652 | if (err < 0) | |
653 | goto del_unicast; | |
654 | } | |
eb06acdc | 655 | |
efdbd2b3 VY |
656 | if (dev->flags & IFF_PROMISC) { |
657 | err = dev_set_promiscuity(lowerdev, 1); | |
658 | if (err < 0) | |
659 | goto clear_multi; | |
660 | } | |
661 | ||
eb06acdc | 662 | hash_add: |
f9ac30f0 | 663 | macvlan_hash_add(vlan); |
b863ceb7 | 664 | return 0; |
b89fb7da | 665 | |
efdbd2b3 | 666 | clear_multi: |
c3891fa2 GF |
667 | if (dev->flags & IFF_ALLMULTI) |
668 | dev_set_allmulti(lowerdev, -1); | |
b89fb7da | 669 | del_unicast: |
7d775f63 | 670 | if (vlan->accel_priv) { |
a6cc0cfa | 671 | lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, |
7d775f63 AD |
672 | vlan->accel_priv); |
673 | vlan->accel_priv = NULL; | |
81d4e91c AD |
674 | } else { |
675 | dev_uc_del(lowerdev, dev->dev_addr); | |
a6cc0cfa | 676 | } |
81d4e91c | 677 | out: |
b89fb7da | 678 | return err; |
b863ceb7 PM |
679 | } |
680 | ||
681 | static int macvlan_stop(struct net_device *dev) | |
682 | { | |
683 | struct macvlan_dev *vlan = netdev_priv(dev); | |
684 | struct net_device *lowerdev = vlan->lowerdev; | |
685 | ||
7d775f63 | 686 | if (vlan->accel_priv) { |
a6cc0cfa | 687 | lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, |
7d775f63 AD |
688 | vlan->accel_priv); |
689 | vlan->accel_priv = NULL; | |
a6cc0cfa JF |
690 | } |
691 | ||
df8ef8f3 JF |
692 | dev_uc_unsync(lowerdev, dev); |
693 | dev_mc_unsync(lowerdev, dev); | |
694 | ||
43c2d578 | 695 | if (macvlan_passthru(vlan->port)) { |
df8ef8f3 JF |
696 | if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) |
697 | dev_set_promiscuity(lowerdev, -1); | |
eb06acdc SS |
698 | goto hash_del; |
699 | } | |
700 | ||
b863ceb7 PM |
701 | if (dev->flags & IFF_ALLMULTI) |
702 | dev_set_allmulti(lowerdev, -1); | |
703 | ||
efdbd2b3 VY |
704 | if (dev->flags & IFF_PROMISC) |
705 | dev_set_promiscuity(lowerdev, -1); | |
706 | ||
a748ee24 | 707 | dev_uc_del(lowerdev, dev->dev_addr); |
b863ceb7 | 708 | |
eb06acdc | 709 | hash_del: |
449f4544 | 710 | macvlan_hash_del(vlan, !dev->dismantle); |
b863ceb7 PM |
711 | return 0; |
712 | } | |
713 | ||
8bc7823e JK |
714 | static int macvlan_sync_address(struct net_device *dev, |
715 | const unsigned char *addr) | |
ad5d20a6 PM |
716 | { |
717 | struct macvlan_dev *vlan = netdev_priv(dev); | |
718 | struct net_device *lowerdev = vlan->lowerdev; | |
18c8c54d | 719 | struct macvlan_port *port = vlan->port; |
ad5d20a6 PM |
720 | int err; |
721 | ||
f9ac30f0 EB |
722 | if (!(dev->flags & IFF_UP)) { |
723 | /* Just copy in the new address */ | |
e35b8d7d | 724 | eth_hw_addr_set(dev, addr); |
f9ac30f0 EB |
725 | } else { |
726 | /* Rehash and update the device filters */ | |
e289fd28 | 727 | if (macvlan_addr_busy(vlan->port, addr)) |
59f997b0 | 728 | return -EADDRINUSE; |
ad5d20a6 | 729 | |
18c8c54d | 730 | if (!macvlan_passthru(port)) { |
e289fd28 | 731 | err = dev_uc_add(lowerdev, addr); |
732 | if (err) | |
733 | return err; | |
ad5d20a6 | 734 | |
e289fd28 | 735 | dev_uc_del(lowerdev, dev->dev_addr); |
736 | } | |
f9ac30f0 | 737 | |
e289fd28 | 738 | macvlan_hash_change_addr(vlan, addr); |
f9ac30f0 | 739 | } |
18c8c54d VY |
740 | if (macvlan_passthru(port) && !macvlan_addr_change(port)) { |
741 | /* Since addr_change isn't set, we are here due to lower | |
742 | * device change. Save the lower-dev address so we can | |
743 | * restore it later. | |
744 | */ | |
745 | ether_addr_copy(vlan->port->perm_addr, | |
746 | lowerdev->dev_addr); | |
747 | } | |
748 | macvlan_clear_addr_change(port); | |
ad5d20a6 PM |
749 | return 0; |
750 | } | |
751 | ||
e289fd28 | 752 | static int macvlan_set_mac_address(struct net_device *dev, void *p) |
753 | { | |
754 | struct macvlan_dev *vlan = netdev_priv(dev); | |
755 | struct sockaddr *addr = p; | |
756 | ||
757 | if (!is_valid_ether_addr(addr->sa_data)) | |
758 | return -EADDRNOTAVAIL; | |
759 | ||
e26f43fa VY |
760 | /* If the addresses are the same, this is a no-op */ |
761 | if (ether_addr_equal(dev->dev_addr, addr->sa_data)) | |
762 | return 0; | |
763 | ||
e289fd28 | 764 | if (vlan->mode == MACVLAN_MODE_PASSTHRU) { |
18c8c54d | 765 | macvlan_set_addr_change(vlan->port); |
3a37a963 | 766 | return dev_set_mac_address(vlan->lowerdev, addr, NULL); |
e289fd28 | 767 | } |
768 | ||
59f997b0 MC |
769 | if (macvlan_addr_busy(vlan->port, addr->sa_data)) |
770 | return -EADDRINUSE; | |
771 | ||
e289fd28 | 772 | return macvlan_sync_address(dev, addr->sa_data); |
773 | } | |
774 | ||
b863ceb7 PM |
775 | static void macvlan_change_rx_flags(struct net_device *dev, int change) |
776 | { | |
777 | struct macvlan_dev *vlan = netdev_priv(dev); | |
778 | struct net_device *lowerdev = vlan->lowerdev; | |
779 | ||
bbeb0ead PC |
780 | if (dev->flags & IFF_UP) { |
781 | if (change & IFF_ALLMULTI) | |
782 | dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
efdbd2b3 VY |
783 | if (change & IFF_PROMISC) |
784 | dev_set_promiscuity(lowerdev, | |
785 | dev->flags & IFF_PROMISC ? 1 : -1); | |
786 | ||
bbeb0ead | 787 | } |
b863ceb7 PM |
788 | } |
789 | ||
9c127a01 HX |
790 | static void macvlan_compute_filter(unsigned long *mc_filter, |
791 | struct net_device *dev, | |
d45276e7 | 792 | struct macvlan_dev *vlan, int cutoff) |
b863ceb7 | 793 | { |
cd431e73 | 794 | if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { |
ae63ad9b | 795 | bitmap_fill(mc_filter, MACVLAN_MC_FILTER_SZ); |
cd431e73 | 796 | } else { |
cd431e73 | 797 | DECLARE_BITMAP(filter, MACVLAN_MC_FILTER_SZ); |
d45276e7 | 798 | struct netdev_hw_addr *ha; |
cd431e73 ED |
799 | |
800 | bitmap_zero(filter, MACVLAN_MC_FILTER_SZ); | |
801 | netdev_for_each_mc_addr(ha, dev) { | |
ae63ad9b | 802 | if (!vlan && ha->synced <= cutoff) |
d45276e7 HX |
803 | continue; |
804 | ||
3807ff58 | 805 | __set_bit(mc_hash(vlan, ha->addr), filter); |
cd431e73 | 806 | } |
d5270430 | 807 | |
ae63ad9b | 808 | __set_bit(mc_hash(vlan, dev->broadcast), filter); |
d5270430 | 809 | |
9c127a01 | 810 | bitmap_copy(mc_filter, filter, MACVLAN_MC_FILTER_SZ); |
cd431e73 | 811 | } |
9c127a01 HX |
812 | } |
813 | ||
954d1fa1 HX |
814 | static void macvlan_recompute_bc_filter(struct macvlan_dev *vlan) |
815 | { | |
ae63ad9b HX |
816 | if (vlan->port->bc_cutoff < 0) { |
817 | bitmap_zero(vlan->port->bc_filter, MACVLAN_MC_FILTER_SZ); | |
818 | return; | |
819 | } | |
820 | ||
954d1fa1 HX |
821 | macvlan_compute_filter(vlan->port->bc_filter, vlan->lowerdev, NULL, |
822 | vlan->port->bc_cutoff); | |
823 | } | |
824 | ||
9c127a01 HX |
825 | static void macvlan_set_mac_lists(struct net_device *dev) |
826 | { | |
827 | struct macvlan_dev *vlan = netdev_priv(dev); | |
828 | ||
d45276e7 | 829 | macvlan_compute_filter(vlan->mc_filter, dev, vlan, 0); |
9c127a01 | 830 | |
df8ef8f3 | 831 | dev_uc_sync(vlan->lowerdev, dev); |
b863ceb7 | 832 | dev_mc_sync(vlan->lowerdev, dev); |
9c127a01 HX |
833 | |
834 | /* This is slightly inaccurate as we're including the subscription | |
835 | * list of vlan->lowerdev too. | |
836 | * | |
837 | * Bug alert: This only works if everyone has the same broadcast | |
838 | * address as lowerdev. As soon as someone changes theirs this | |
839 | * will break. | |
840 | * | |
841 | * However, this is already broken as when you change your broadcast | |
842 | * address we don't get called. | |
843 | * | |
844 | * The solution is to maintain a list of broadcast addresses like | |
845 | * we do for uc/mc, if you care. | |
846 | */ | |
d45276e7 HX |
847 | macvlan_compute_filter(vlan->port->mc_filter, vlan->lowerdev, NULL, |
848 | 0); | |
954d1fa1 HX |
849 | macvlan_recompute_bc_filter(vlan); |
850 | } | |
851 | ||
852 | static void update_port_bc_cutoff(struct macvlan_dev *vlan, int cutoff) | |
853 | { | |
854 | if (vlan->port->bc_cutoff == cutoff) | |
855 | return; | |
856 | ||
857 | vlan->port->bc_cutoff = cutoff; | |
858 | macvlan_recompute_bc_filter(vlan); | |
b863ceb7 PM |
859 | } |
860 | ||
861 | static int macvlan_change_mtu(struct net_device *dev, int new_mtu) | |
862 | { | |
863 | struct macvlan_dev *vlan = netdev_priv(dev); | |
864 | ||
91572088 | 865 | if (vlan->lowerdev->mtu < new_mtu) |
b863ceb7 PM |
866 | return -EINVAL; |
867 | dev->mtu = new_mtu; | |
868 | return 0; | |
869 | } | |
870 | ||
a7605370 | 871 | static int macvlan_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
254c0a2b HL |
872 | { |
873 | struct net_device *real_dev = macvlan_dev_real_dev(dev); | |
874 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
875 | struct ifreq ifrr; | |
876 | int err = -EOPNOTSUPP; | |
877 | ||
36f18439 | 878 | strscpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); |
254c0a2b HL |
879 | ifrr.ifr_ifru = ifr->ifr_ifru; |
880 | ||
881 | switch (cmd) { | |
882 | case SIOCSHWTSTAMP: | |
6c2ea9eb HL |
883 | if (!net_eq(dev_net(dev), &init_net)) |
884 | break; | |
df561f66 | 885 | fallthrough; |
254c0a2b | 886 | case SIOCGHWTSTAMP: |
a7605370 AB |
887 | if (netif_device_present(real_dev) && ops->ndo_eth_ioctl) |
888 | err = ops->ndo_eth_ioctl(real_dev, &ifrr, cmd); | |
254c0a2b HL |
889 | break; |
890 | } | |
891 | ||
892 | if (!err) | |
893 | ifr->ifr_ifru = ifrr.ifr_ifru; | |
894 | ||
895 | return err; | |
896 | } | |
897 | ||
b863ceb7 PM |
898 | /* |
899 | * macvlan network devices have devices nesting below it and are a special | |
900 | * "super class" of normal network devices; split their locks off into a | |
901 | * separate class since they always nest. | |
902 | */ | |
845e0ebb CW |
903 | static struct lock_class_key macvlan_netdev_addr_lock_key; |
904 | ||
70957eae VY |
905 | #define ALWAYS_ON_OFFLOADS \ |
906 | (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_GSO_SOFTWARE | \ | |
f21e5077 | 907 | NETIF_F_GSO_ROBUST | NETIF_F_GSO_ENCAP_ALL) |
8b4703e9 | 908 | |
70957eae VY |
909 | #define ALWAYS_ON_FEATURES (ALWAYS_ON_OFFLOADS | NETIF_F_LLTX) |
910 | ||
b863ceb7 | 911 | #define MACVLAN_FEATURES \ |
a188222b | 912 | (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ |
fb652fdf | 913 | NETIF_F_GSO | NETIF_F_TSO | NETIF_F_LRO | \ |
8d13e670 | 914 | NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ |
28d2b136 | 915 | NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER) |
b863ceb7 PM |
916 | |
917 | #define MACVLAN_STATE_MASK \ | |
918 | ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) | |
919 | ||
845e0ebb CW |
920 | static void macvlan_set_lockdep_class(struct net_device *dev) |
921 | { | |
922 | netdev_lockdep_set_classes(dev); | |
be74294f CW |
923 | lockdep_set_class(&dev->addr_list_lock, |
924 | &macvlan_netdev_addr_lock_key); | |
845e0ebb CW |
925 | } |
926 | ||
b863ceb7 PM |
927 | static int macvlan_init(struct net_device *dev) |
928 | { | |
929 | struct macvlan_dev *vlan = netdev_priv(dev); | |
291ac684 | 930 | struct net_device *lowerdev = vlan->lowerdev; |
30837960 | 931 | struct macvlan_port *port = vlan->port; |
b863ceb7 PM |
932 | |
933 | dev->state = (dev->state & ~MACVLAN_STATE_MASK) | | |
934 | (lowerdev->state & MACVLAN_STATE_MASK); | |
935 | dev->features = lowerdev->features & MACVLAN_FEATURES; | |
8b4703e9 | 936 | dev->features |= ALWAYS_ON_FEATURES; |
62dbe830 | 937 | dev->hw_features |= NETIF_F_LRO; |
081e83a7 | 938 | dev->vlan_features = lowerdev->vlan_features & MACVLAN_FEATURES; |
70957eae | 939 | dev->vlan_features |= ALWAYS_ON_OFFLOADS; |
f21e5077 | 940 | dev->hw_enc_features |= dev->features; |
6df6398f | 941 | netif_inherit_tso_max(dev, lowerdev); |
ef5c8996 | 942 | dev->hard_header_len = lowerdev->hard_header_len; |
845e0ebb | 943 | macvlan_set_lockdep_class(dev); |
1a33e10e | 944 | |
1c213bd2 | 945 | vlan->pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats); |
8ffab51b | 946 | if (!vlan->pcpu_stats) |
fccaf710 ED |
947 | return -ENOMEM; |
948 | ||
30837960 FR |
949 | port->count += 1; |
950 | ||
291ac684 | 951 | /* Get macvlan's reference to lowerdev */ |
d62607c3 | 952 | netdev_hold(lowerdev, &vlan->dev_tracker, GFP_KERNEL); |
291ac684 | 953 | |
b863ceb7 PM |
954 | return 0; |
955 | } | |
956 | ||
fccaf710 ED |
957 | static void macvlan_uninit(struct net_device *dev) |
958 | { | |
959 | struct macvlan_dev *vlan = netdev_priv(dev); | |
d5cd9244 | 960 | struct macvlan_port *port = vlan->port; |
fccaf710 | 961 | |
8ffab51b | 962 | free_percpu(vlan->pcpu_stats); |
d5cd9244 | 963 | |
79cf79ab | 964 | macvlan_flush_sources(port, vlan); |
5e3c516b DM |
965 | port->count -= 1; |
966 | if (!port->count) | |
d5cd9244 | 967 | macvlan_port_destroy(port->dev); |
fccaf710 ED |
968 | } |
969 | ||
bc1f4470 | 970 | static void macvlan_dev_get_stats64(struct net_device *dev, |
971 | struct rtnl_link_stats64 *stats) | |
fccaf710 | 972 | { |
fccaf710 ED |
973 | struct macvlan_dev *vlan = netdev_priv(dev); |
974 | ||
8ffab51b | 975 | if (vlan->pcpu_stats) { |
cdf3e274 | 976 | struct vlan_pcpu_stats *p; |
8ffab51b ED |
977 | u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; |
978 | u32 rx_errors = 0, tx_dropped = 0; | |
bc66154e | 979 | unsigned int start; |
fccaf710 ED |
980 | int i; |
981 | ||
982 | for_each_possible_cpu(i) { | |
8ffab51b | 983 | p = per_cpu_ptr(vlan->pcpu_stats, i); |
bc66154e | 984 | do { |
068c38ad | 985 | start = u64_stats_fetch_begin(&p->syncp); |
09cca53c ED |
986 | rx_packets = u64_stats_read(&p->rx_packets); |
987 | rx_bytes = u64_stats_read(&p->rx_bytes); | |
988 | rx_multicast = u64_stats_read(&p->rx_multicast); | |
989 | tx_packets = u64_stats_read(&p->tx_packets); | |
990 | tx_bytes = u64_stats_read(&p->tx_bytes); | |
068c38ad | 991 | } while (u64_stats_fetch_retry(&p->syncp, start)); |
8ffab51b ED |
992 | |
993 | stats->rx_packets += rx_packets; | |
994 | stats->rx_bytes += rx_bytes; | |
995 | stats->multicast += rx_multicast; | |
996 | stats->tx_packets += tx_packets; | |
997 | stats->tx_bytes += tx_bytes; | |
998 | /* rx_errors & tx_dropped are u32, updated | |
999 | * without syncp protection. | |
1000 | */ | |
09cca53c ED |
1001 | rx_errors += READ_ONCE(p->rx_errors); |
1002 | tx_dropped += READ_ONCE(p->tx_dropped); | |
fccaf710 | 1003 | } |
8ffab51b ED |
1004 | stats->rx_errors = rx_errors; |
1005 | stats->rx_dropped = rx_errors; | |
1006 | stats->tx_dropped = tx_dropped; | |
fccaf710 | 1007 | } |
fccaf710 ED |
1008 | } |
1009 | ||
8e586137 | 1010 | static int macvlan_vlan_rx_add_vid(struct net_device *dev, |
80d5c368 | 1011 | __be16 proto, u16 vid) |
8d13e670 JF |
1012 | { |
1013 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1014 | struct net_device *lowerdev = vlan->lowerdev; | |
8d13e670 | 1015 | |
80d5c368 | 1016 | return vlan_vid_add(lowerdev, proto, vid); |
8d13e670 JF |
1017 | } |
1018 | ||
8e586137 | 1019 | static int macvlan_vlan_rx_kill_vid(struct net_device *dev, |
80d5c368 | 1020 | __be16 proto, u16 vid) |
8d13e670 JF |
1021 | { |
1022 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1023 | struct net_device *lowerdev = vlan->lowerdev; | |
8d13e670 | 1024 | |
80d5c368 | 1025 | vlan_vid_del(lowerdev, proto, vid); |
8e586137 | 1026 | return 0; |
8d13e670 JF |
1027 | } |
1028 | ||
edc7d573 | 1029 | static int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], |
df8ef8f3 | 1030 | struct net_device *dev, |
f6f6424b | 1031 | const unsigned char *addr, u16 vid, |
87b0984e PM |
1032 | u16 flags, |
1033 | struct netlink_ext_ack *extack) | |
df8ef8f3 JF |
1034 | { |
1035 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1036 | int err = -EINVAL; | |
1037 | ||
8a50f11c VY |
1038 | /* Support unicast filter only on passthru devices. |
1039 | * Multicast filter should be allowed on all devices. | |
1040 | */ | |
43c2d578 | 1041 | if (!macvlan_passthru(vlan->port) && is_unicast_ether_addr(addr)) |
df8ef8f3 JF |
1042 | return -EOPNOTSUPP; |
1043 | ||
ab2cfbb2 TR |
1044 | if (flags & NLM_F_REPLACE) |
1045 | return -EOPNOTSUPP; | |
1046 | ||
df8ef8f3 JF |
1047 | if (is_unicast_ether_addr(addr)) |
1048 | err = dev_uc_add_excl(dev, addr); | |
1049 | else if (is_multicast_ether_addr(addr)) | |
1050 | err = dev_mc_add_excl(dev, addr); | |
1051 | ||
1052 | return err; | |
1053 | } | |
1054 | ||
1690be63 | 1055 | static int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], |
df8ef8f3 | 1056 | struct net_device *dev, |
ca4567f1 AM |
1057 | const unsigned char *addr, u16 vid, |
1058 | struct netlink_ext_ack *extack) | |
df8ef8f3 JF |
1059 | { |
1060 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1061 | int err = -EINVAL; | |
1062 | ||
8a50f11c VY |
1063 | /* Support unicast filter only on passthru devices. |
1064 | * Multicast filter should be allowed on all devices. | |
1065 | */ | |
43c2d578 | 1066 | if (!macvlan_passthru(vlan->port) && is_unicast_ether_addr(addr)) |
df8ef8f3 JF |
1067 | return -EOPNOTSUPP; |
1068 | ||
1069 | if (is_unicast_ether_addr(addr)) | |
1070 | err = dev_uc_del(dev, addr); | |
1071 | else if (is_multicast_ether_addr(addr)) | |
1072 | err = dev_mc_del(dev, addr); | |
1073 | ||
1074 | return err; | |
1075 | } | |
1076 | ||
b863ceb7 PM |
1077 | static void macvlan_ethtool_get_drvinfo(struct net_device *dev, |
1078 | struct ethtool_drvinfo *drvinfo) | |
1079 | { | |
fb3ceec1 WS |
1080 | strscpy(drvinfo->driver, "macvlan", sizeof(drvinfo->driver)); |
1081 | strscpy(drvinfo->version, "0.1", sizeof(drvinfo->version)); | |
b863ceb7 PM |
1082 | } |
1083 | ||
85f95819 DD |
1084 | static int macvlan_ethtool_get_link_ksettings(struct net_device *dev, |
1085 | struct ethtool_link_ksettings *cmd) | |
9edb8bb6 SH |
1086 | { |
1087 | const struct macvlan_dev *vlan = netdev_priv(dev); | |
4bc71cb9 | 1088 | |
85f95819 | 1089 | return __ethtool_get_link_ksettings(vlan->lowerdev, cmd); |
9edb8bb6 SH |
1090 | } |
1091 | ||
254c0a2b HL |
1092 | static int macvlan_ethtool_get_ts_info(struct net_device *dev, |
1093 | struct ethtool_ts_info *info) | |
1094 | { | |
1095 | struct net_device *real_dev = macvlan_dev_real_dev(dev); | |
1096 | const struct ethtool_ops *ops = real_dev->ethtool_ops; | |
1097 | struct phy_device *phydev = real_dev->phydev; | |
1098 | ||
d25de984 RC |
1099 | if (phy_has_tsinfo(phydev)) { |
1100 | return phy_ts_info(phydev, info); | |
254c0a2b HL |
1101 | } else if (ops->get_ts_info) { |
1102 | return ops->get_ts_info(real_dev, info); | |
1103 | } else { | |
1104 | info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE | | |
1105 | SOF_TIMESTAMPING_SOFTWARE; | |
1106 | info->phc_index = -1; | |
1107 | } | |
1108 | ||
1109 | return 0; | |
1110 | } | |
1111 | ||
2be5c767 VY |
1112 | static netdev_features_t macvlan_fix_features(struct net_device *dev, |
1113 | netdev_features_t features) | |
1114 | { | |
1115 | struct macvlan_dev *vlan = netdev_priv(dev); | |
62dbe830 | 1116 | netdev_features_t lowerdev_features = vlan->lowerdev->features; |
797f87f8 | 1117 | netdev_features_t mask; |
2be5c767 | 1118 | |
797f87f8 FW |
1119 | features |= NETIF_F_ALL_FOR_ALL; |
1120 | features &= (vlan->set_features | ~MACVLAN_FEATURES); | |
1121 | mask = features; | |
1122 | ||
62dbe830 MK |
1123 | lowerdev_features &= (features | ~NETIF_F_LRO); |
1124 | features = netdev_increment_features(lowerdev_features, features, mask); | |
8b4703e9 | 1125 | features |= ALWAYS_ON_FEATURES; |
13fbcc8d | 1126 | features &= (ALWAYS_ON_FEATURES | MACVLAN_FEATURES); |
797f87f8 FW |
1127 | |
1128 | return features; | |
2be5c767 VY |
1129 | } |
1130 | ||
688cea83 | 1131 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1132 | static void macvlan_dev_poll_controller(struct net_device *dev) | |
1133 | { | |
1134 | return; | |
1135 | } | |
1136 | ||
1137 | static int macvlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) | |
1138 | { | |
1139 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1140 | struct net_device *real_dev = vlan->lowerdev; | |
1141 | struct netpoll *netpoll; | |
419a38ce | 1142 | int err; |
688cea83 | 1143 | |
1144 | netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); | |
1145 | err = -ENOMEM; | |
1146 | if (!netpoll) | |
1147 | goto out; | |
1148 | ||
1149 | err = __netpoll_setup(netpoll, real_dev); | |
1150 | if (err) { | |
1151 | kfree(netpoll); | |
1152 | goto out; | |
1153 | } | |
1154 | ||
1155 | vlan->netpoll = netpoll; | |
1156 | ||
1157 | out: | |
1158 | return err; | |
1159 | } | |
1160 | ||
1161 | static void macvlan_dev_netpoll_cleanup(struct net_device *dev) | |
1162 | { | |
1163 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1164 | struct netpoll *netpoll = vlan->netpoll; | |
1165 | ||
1166 | if (!netpoll) | |
1167 | return; | |
1168 | ||
1169 | vlan->netpoll = NULL; | |
1170 | ||
c9fbd71f | 1171 | __netpoll_free(netpoll); |
688cea83 | 1172 | } |
1173 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
1174 | ||
ef5fa6bc ND |
1175 | static int macvlan_dev_get_iflink(const struct net_device *dev) |
1176 | { | |
1177 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1178 | ||
1179 | return vlan->lowerdev->ifindex; | |
1180 | } | |
1181 | ||
b863ceb7 PM |
1182 | static const struct ethtool_ops macvlan_ethtool_ops = { |
1183 | .get_link = ethtool_op_get_link, | |
85f95819 | 1184 | .get_link_ksettings = macvlan_ethtool_get_link_ksettings, |
b863ceb7 | 1185 | .get_drvinfo = macvlan_ethtool_get_drvinfo, |
254c0a2b | 1186 | .get_ts_info = macvlan_ethtool_get_ts_info, |
b863ceb7 PM |
1187 | }; |
1188 | ||
54a30c97 SH |
1189 | static const struct net_device_ops macvlan_netdev_ops = { |
1190 | .ndo_init = macvlan_init, | |
fccaf710 | 1191 | .ndo_uninit = macvlan_uninit, |
54a30c97 SH |
1192 | .ndo_open = macvlan_open, |
1193 | .ndo_stop = macvlan_stop, | |
00829823 | 1194 | .ndo_start_xmit = macvlan_start_xmit, |
54a30c97 | 1195 | .ndo_change_mtu = macvlan_change_mtu, |
a7605370 | 1196 | .ndo_eth_ioctl = macvlan_eth_ioctl, |
2be5c767 | 1197 | .ndo_fix_features = macvlan_fix_features, |
54a30c97 SH |
1198 | .ndo_change_rx_flags = macvlan_change_rx_flags, |
1199 | .ndo_set_mac_address = macvlan_set_mac_address, | |
df8ef8f3 | 1200 | .ndo_set_rx_mode = macvlan_set_mac_lists, |
bc66154e | 1201 | .ndo_get_stats64 = macvlan_dev_get_stats64, |
54a30c97 | 1202 | .ndo_validate_addr = eth_validate_addr, |
8d13e670 JF |
1203 | .ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid, |
1204 | .ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid, | |
df8ef8f3 JF |
1205 | .ndo_fdb_add = macvlan_fdb_add, |
1206 | .ndo_fdb_del = macvlan_fdb_del, | |
1207 | .ndo_fdb_dump = ndo_dflt_fdb_dump, | |
688cea83 | 1208 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1209 | .ndo_poll_controller = macvlan_dev_poll_controller, | |
1210 | .ndo_netpoll_setup = macvlan_dev_netpoll_setup, | |
1211 | .ndo_netpoll_cleanup = macvlan_dev_netpoll_cleanup, | |
1212 | #endif | |
ef5fa6bc | 1213 | .ndo_get_iflink = macvlan_dev_get_iflink, |
f56e67b5 | 1214 | .ndo_features_check = passthru_features_check, |
54a30c97 SH |
1215 | }; |
1216 | ||
291ac684 ZX |
1217 | static void macvlan_dev_free(struct net_device *dev) |
1218 | { | |
1219 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1220 | ||
1221 | /* Get rid of the macvlan's reference to lowerdev */ | |
d62607c3 | 1222 | netdev_put(vlan->lowerdev, &vlan->dev_tracker); |
291ac684 ZX |
1223 | } |
1224 | ||
8a35747a | 1225 | void macvlan_common_setup(struct net_device *dev) |
b863ceb7 PM |
1226 | { |
1227 | ether_setup(dev); | |
1228 | ||
b64085b0 | 1229 | /* ether_setup() has set dev->min_mtu to ETH_MIN_MTU. */ |
91572088 | 1230 | dev->max_mtu = ETH_MAX_MTU; |
02875878 ED |
1231 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
1232 | netif_keep_dst(dev); | |
2106efda | 1233 | dev->priv_flags |= IFF_UNICAST_FLT | IFF_CHANGE_PROTO_DOWN; |
54a30c97 | 1234 | dev->netdev_ops = &macvlan_netdev_ops; |
cf124db5 | 1235 | dev->needs_free_netdev = true; |
291ac684 | 1236 | dev->priv_destructor = macvlan_dev_free; |
71740129 | 1237 | dev->header_ops = &macvlan_hard_header_ops; |
b863ceb7 | 1238 | dev->ethtool_ops = &macvlan_ethtool_ops; |
8a35747a HX |
1239 | } |
1240 | EXPORT_SYMBOL_GPL(macvlan_common_setup); | |
1241 | ||
1242 | static void macvlan_setup(struct net_device *dev) | |
1243 | { | |
1244 | macvlan_common_setup(dev); | |
7009212b | 1245 | dev->priv_flags |= IFF_NO_QUEUE; |
b863ceb7 PM |
1246 | } |
1247 | ||
1248 | static int macvlan_port_create(struct net_device *dev) | |
1249 | { | |
1250 | struct macvlan_port *port; | |
1251 | unsigned int i; | |
ab95bfe0 | 1252 | int err; |
b863ceb7 PM |
1253 | |
1254 | if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) | |
1255 | return -EINVAL; | |
1256 | ||
322dc6e0 | 1257 | if (netdev_is_rx_handler_busy(dev)) |
d6b00fec MB |
1258 | return -EBUSY; |
1259 | ||
b863ceb7 PM |
1260 | port = kzalloc(sizeof(*port), GFP_KERNEL); |
1261 | if (port == NULL) | |
1262 | return -ENOMEM; | |
1263 | ||
1264 | port->dev = dev; | |
18c8c54d | 1265 | ether_addr_copy(port->perm_addr, dev->dev_addr); |
b863ceb7 PM |
1266 | INIT_LIST_HEAD(&port->vlans); |
1267 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) | |
1268 | INIT_HLIST_HEAD(&port->vlan_hash[i]); | |
79cf79ab MB |
1269 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) |
1270 | INIT_HLIST_HEAD(&port->vlan_source_hash[i]); | |
ab95bfe0 | 1271 | |
d4bff72c | 1272 | port->bc_queue_len_used = 0; |
954d1fa1 | 1273 | port->bc_cutoff = 1; |
412ca155 HX |
1274 | skb_queue_head_init(&port->bc_queue); |
1275 | INIT_WORK(&port->bc_work, macvlan_process_broadcast); | |
1276 | ||
a35e2c1b JP |
1277 | err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); |
1278 | if (err) | |
ab95bfe0 | 1279 | kfree(port); |
d9351561 ED |
1280 | else |
1281 | dev->priv_flags |= IFF_MACVLAN_PORT; | |
ab95bfe0 | 1282 | return err; |
b863ceb7 PM |
1283 | } |
1284 | ||
1285 | static void macvlan_port_destroy(struct net_device *dev) | |
1286 | { | |
e052f7e6 | 1287 | struct macvlan_port *port = macvlan_port_get_rtnl(dev); |
f6478218 | 1288 | struct sk_buff *skb; |
b863ceb7 | 1289 | |
a35e2c1b | 1290 | dev->priv_flags &= ~IFF_MACVLAN_PORT; |
ab95bfe0 | 1291 | netdev_rx_handler_unregister(dev); |
fe0ca732 ED |
1292 | |
1293 | /* After this point, no packet can schedule bc_work anymore, | |
1294 | * but we need to cancel it and purge left skbs if any. | |
1295 | */ | |
1296 | cancel_work_sync(&port->bc_work); | |
f6478218 HX |
1297 | |
1298 | while ((skb = __skb_dequeue(&port->bc_queue))) { | |
1299 | const struct macvlan_dev *src = MACVLAN_SKB_CB(skb)->src; | |
1300 | ||
1301 | if (src) | |
1302 | dev_put(src->dev); | |
1303 | ||
1304 | kfree_skb(skb); | |
1305 | } | |
fe0ca732 | 1306 | |
18c8c54d VY |
1307 | /* If the lower device address has been changed by passthru |
1308 | * macvlan, put it back. | |
1309 | */ | |
1310 | if (macvlan_passthru(port) && | |
1311 | !ether_addr_equal(port->dev->dev_addr, port->perm_addr)) { | |
1312 | struct sockaddr sa; | |
1313 | ||
1314 | sa.sa_family = port->dev->type; | |
1315 | memcpy(&sa.sa_data, port->perm_addr, port->dev->addr_len); | |
3a37a963 | 1316 | dev_set_mac_address(port->dev, &sa, NULL); |
18c8c54d VY |
1317 | } |
1318 | ||
a1f5315c | 1319 | kfree(port); |
b863ceb7 PM |
1320 | } |
1321 | ||
a8b8a889 MS |
1322 | static int macvlan_validate(struct nlattr *tb[], struct nlattr *data[], |
1323 | struct netlink_ext_ack *extack) | |
b863ceb7 | 1324 | { |
8b61fba5 AŠ |
1325 | struct nlattr *nla, *head; |
1326 | int rem, len; | |
1327 | ||
b863ceb7 PM |
1328 | if (tb[IFLA_ADDRESS]) { |
1329 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
1330 | return -EINVAL; | |
1331 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
1332 | return -EADDRNOTAVAIL; | |
1333 | } | |
27c0b1a8 | 1334 | |
07850a4f ZS |
1335 | if (!data) |
1336 | return 0; | |
1337 | ||
1338 | if (data[IFLA_MACVLAN_FLAGS] && | |
427f0c8c JB |
1339 | nla_get_u16(data[IFLA_MACVLAN_FLAGS]) & ~(MACVLAN_FLAG_NOPROMISC | |
1340 | MACVLAN_FLAG_NODST)) | |
15127478 MT |
1341 | return -EINVAL; |
1342 | ||
07850a4f | 1343 | if (data[IFLA_MACVLAN_MODE]) { |
27c0b1a8 AB |
1344 | switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { |
1345 | case MACVLAN_MODE_PRIVATE: | |
1346 | case MACVLAN_MODE_VEPA: | |
1347 | case MACVLAN_MODE_BRIDGE: | |
eb06acdc | 1348 | case MACVLAN_MODE_PASSTHRU: |
79cf79ab MB |
1349 | case MACVLAN_MODE_SOURCE: |
1350 | break; | |
1351 | default: | |
1352 | return -EINVAL; | |
1353 | } | |
1354 | } | |
1355 | ||
07850a4f | 1356 | if (data[IFLA_MACVLAN_MACADDR_MODE]) { |
79cf79ab MB |
1357 | switch (nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE])) { |
1358 | case MACVLAN_MACADDR_ADD: | |
1359 | case MACVLAN_MACADDR_DEL: | |
1360 | case MACVLAN_MACADDR_FLUSH: | |
1361 | case MACVLAN_MACADDR_SET: | |
27c0b1a8 AB |
1362 | break; |
1363 | default: | |
1364 | return -EINVAL; | |
1365 | } | |
1366 | } | |
79cf79ab | 1367 | |
07850a4f | 1368 | if (data[IFLA_MACVLAN_MACADDR]) { |
79cf79ab MB |
1369 | if (nla_len(data[IFLA_MACVLAN_MACADDR]) != ETH_ALEN) |
1370 | return -EINVAL; | |
1371 | ||
1372 | if (!is_valid_ether_addr(nla_data(data[IFLA_MACVLAN_MACADDR]))) | |
1373 | return -EADDRNOTAVAIL; | |
1374 | } | |
1375 | ||
8b61fba5 AŠ |
1376 | if (data[IFLA_MACVLAN_MACADDR_DATA]) { |
1377 | head = nla_data(data[IFLA_MACVLAN_MACADDR_DATA]); | |
1378 | len = nla_len(data[IFLA_MACVLAN_MACADDR_DATA]); | |
1379 | ||
1380 | nla_for_each_attr(nla, head, len, rem) { | |
1381 | if (nla_type(nla) != IFLA_MACVLAN_MACADDR || | |
1382 | nla_len(nla) != ETH_ALEN) | |
1383 | return -EINVAL; | |
1384 | ||
1385 | if (!is_valid_ether_addr(nla_data(nla))) | |
1386 | return -EADDRNOTAVAIL; | |
1387 | } | |
1388 | } | |
1389 | ||
07850a4f | 1390 | if (data[IFLA_MACVLAN_MACADDR_COUNT]) |
79cf79ab MB |
1391 | return -EINVAL; |
1392 | ||
1393 | return 0; | |
1394 | } | |
1395 | ||
50a77e5f | 1396 | /* |
79cf79ab MB |
1397 | * reconfigure list of remote source mac address |
1398 | * (only for macvlan devices in source mode) | |
1399 | * Note regarding alignment: all netlink data is aligned to 4 Byte, which | |
1400 | * suffices for both ether_addr_copy and ether_addr_equal_64bits usage. | |
1401 | */ | |
1402 | static int macvlan_changelink_sources(struct macvlan_dev *vlan, u32 mode, | |
1403 | struct nlattr *data[]) | |
1404 | { | |
1405 | char *addr = NULL; | |
1406 | int ret, rem, len; | |
1407 | struct nlattr *nla, *head; | |
1408 | struct macvlan_source_entry *entry; | |
1409 | ||
1410 | if (data[IFLA_MACVLAN_MACADDR]) | |
1411 | addr = nla_data(data[IFLA_MACVLAN_MACADDR]); | |
1412 | ||
1413 | if (mode == MACVLAN_MACADDR_ADD) { | |
1414 | if (!addr) | |
1415 | return -EINVAL; | |
1416 | ||
1417 | return macvlan_hash_add_source(vlan, addr); | |
1418 | ||
1419 | } else if (mode == MACVLAN_MACADDR_DEL) { | |
1420 | if (!addr) | |
1421 | return -EINVAL; | |
1422 | ||
1423 | entry = macvlan_hash_lookup_source(vlan, addr); | |
1424 | if (entry) { | |
1425 | macvlan_hash_del_source(entry); | |
1426 | vlan->macaddr_count--; | |
1427 | } | |
1428 | } else if (mode == MACVLAN_MACADDR_FLUSH) { | |
1429 | macvlan_flush_sources(vlan->port, vlan); | |
1430 | } else if (mode == MACVLAN_MACADDR_SET) { | |
1431 | macvlan_flush_sources(vlan->port, vlan); | |
1432 | ||
1433 | if (addr) { | |
1434 | ret = macvlan_hash_add_source(vlan, addr); | |
1435 | if (ret) | |
1436 | return ret; | |
1437 | } | |
1438 | ||
89430ef3 | 1439 | if (!data[IFLA_MACVLAN_MACADDR_DATA]) |
79cf79ab MB |
1440 | return 0; |
1441 | ||
1442 | head = nla_data(data[IFLA_MACVLAN_MACADDR_DATA]); | |
1443 | len = nla_len(data[IFLA_MACVLAN_MACADDR_DATA]); | |
1444 | ||
1445 | nla_for_each_attr(nla, head, len, rem) { | |
79cf79ab MB |
1446 | addr = nla_data(nla); |
1447 | ret = macvlan_hash_add_source(vlan, addr); | |
1448 | if (ret) | |
1449 | return ret; | |
1450 | } | |
1451 | } else { | |
1452 | return -EINVAL; | |
1453 | } | |
1454 | ||
b863ceb7 PM |
1455 | return 0; |
1456 | } | |
1457 | ||
fc0663d6 | 1458 | int macvlan_common_newlink(struct net *src_net, struct net_device *dev, |
42ab19ee DA |
1459 | struct nlattr *tb[], struct nlattr *data[], |
1460 | struct netlink_ext_ack *extack) | |
b863ceb7 PM |
1461 | { |
1462 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1463 | struct macvlan_port *port; | |
1464 | struct net_device *lowerdev; | |
1465 | int err; | |
79cf79ab | 1466 | int macmode; |
aa5fd0fb | 1467 | bool create = false; |
b863ceb7 PM |
1468 | |
1469 | if (!tb[IFLA_LINK]) | |
1470 | return -EINVAL; | |
1471 | ||
81adee47 | 1472 | lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); |
b863ceb7 PM |
1473 | if (lowerdev == NULL) |
1474 | return -ENODEV; | |
1475 | ||
d70f2cf5 | 1476 | /* When creating macvlans or macvtaps on top of other macvlans - use |
b0832a29 | 1477 | * the real device as the lowerdev. |
a6ca5f1d | 1478 | */ |
d70f2cf5 KW |
1479 | if (netif_is_macvlan(lowerdev)) |
1480 | lowerdev = macvlan_dev_real_dev(lowerdev); | |
a6ca5f1d | 1481 | |
b863ceb7 PM |
1482 | if (!tb[IFLA_MTU]) |
1483 | dev->mtu = lowerdev->mtu; | |
1484 | else if (dev->mtu > lowerdev->mtu) | |
1485 | return -EINVAL; | |
1486 | ||
91572088 JW |
1487 | /* MTU range: 68 - lowerdev->max_mtu */ |
1488 | dev->min_mtu = ETH_MIN_MTU; | |
1489 | dev->max_mtu = lowerdev->max_mtu; | |
1490 | ||
b863ceb7 | 1491 | if (!tb[IFLA_ADDRESS]) |
7ce5d222 | 1492 | eth_hw_addr_random(dev); |
b863ceb7 | 1493 | |
913564fb | 1494 | if (!netif_is_macvlan_port(lowerdev)) { |
b863ceb7 PM |
1495 | err = macvlan_port_create(lowerdev); |
1496 | if (err < 0) | |
1497 | return err; | |
aa5fd0fb | 1498 | create = true; |
b863ceb7 | 1499 | } |
e052f7e6 | 1500 | port = macvlan_port_get_rtnl(lowerdev); |
b863ceb7 | 1501 | |
eb06acdc | 1502 | /* Only 1 macvlan device can be created in passthru mode */ |
43c2d578 | 1503 | if (macvlan_passthru(port)) { |
aa5fd0fb GF |
1504 | /* The macvlan port must be not created this time, |
1505 | * still goto destroy_macvlan_port for readability. | |
1506 | */ | |
1507 | err = -EINVAL; | |
1508 | goto destroy_macvlan_port; | |
1509 | } | |
eb06acdc | 1510 | |
b863ceb7 PM |
1511 | vlan->lowerdev = lowerdev; |
1512 | vlan->dev = dev; | |
1513 | vlan->port = port; | |
2be5c767 | 1514 | vlan->set_features = MACVLAN_FEATURES; |
b863ceb7 | 1515 | |
27c0b1a8 AB |
1516 | vlan->mode = MACVLAN_MODE_VEPA; |
1517 | if (data && data[IFLA_MACVLAN_MODE]) | |
1518 | vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); | |
1519 | ||
df8ef8f3 JF |
1520 | if (data && data[IFLA_MACVLAN_FLAGS]) |
1521 | vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); | |
1522 | ||
eb06acdc | 1523 | if (vlan->mode == MACVLAN_MODE_PASSTHRU) { |
aa5fd0fb GF |
1524 | if (port->count) { |
1525 | err = -EINVAL; | |
1526 | goto destroy_macvlan_port; | |
1527 | } | |
43c2d578 | 1528 | macvlan_set_passthru(port); |
8b98604e | 1529 | eth_hw_addr_inherit(dev, lowerdev); |
eb06acdc SS |
1530 | } |
1531 | ||
79cf79ab | 1532 | if (data && data[IFLA_MACVLAN_MACADDR_MODE]) { |
aa5fd0fb GF |
1533 | if (vlan->mode != MACVLAN_MODE_SOURCE) { |
1534 | err = -EINVAL; | |
1535 | goto destroy_macvlan_port; | |
1536 | } | |
79cf79ab MB |
1537 | macmode = nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE]); |
1538 | err = macvlan_changelink_sources(vlan, macmode, data); | |
1539 | if (err) | |
aa5fd0fb | 1540 | goto destroy_macvlan_port; |
79cf79ab MB |
1541 | } |
1542 | ||
d4bff72c TK |
1543 | vlan->bc_queue_len_req = MACVLAN_DEFAULT_BC_QUEUE_LEN; |
1544 | if (data && data[IFLA_MACVLAN_BC_QUEUE_LEN]) | |
1545 | vlan->bc_queue_len_req = nla_get_u32(data[IFLA_MACVLAN_BC_QUEUE_LEN]); | |
1546 | ||
954d1fa1 HX |
1547 | if (data && data[IFLA_MACVLAN_BC_CUTOFF]) |
1548 | update_port_bc_cutoff( | |
1549 | vlan, nla_get_s32(data[IFLA_MACVLAN_BC_CUTOFF])); | |
1550 | ||
47d4ab91 JF |
1551 | err = register_netdevice(dev); |
1552 | if (err < 0) | |
aa5fd0fb | 1553 | goto destroy_macvlan_port; |
47d4ab91 | 1554 | |
a6cc0cfa | 1555 | dev->priv_flags |= IFF_MACVLAN; |
42ab19ee | 1556 | err = netdev_upper_dev_link(lowerdev, dev, extack); |
7cd43db7 | 1557 | if (err) |
da37705c | 1558 | goto unregister_netdev; |
b863ceb7 | 1559 | |
233c7df0 | 1560 | list_add_tail_rcu(&vlan->list, &port->vlans); |
d4bff72c | 1561 | update_port_bc_queue_len(vlan->port); |
fc4a7489 | 1562 | netif_stacked_transfer_operstate(lowerdev, dev); |
de7d244d | 1563 | linkwatch_fire_event(dev); |
f16d3d57 | 1564 | |
b863ceb7 | 1565 | return 0; |
f16d3d57 | 1566 | |
da37705c | 1567 | unregister_netdev: |
d02fd6e7 | 1568 | /* macvlan_uninit would free the macvlan port */ |
da37705c | 1569 | unregister_netdevice(dev); |
d02fd6e7 | 1570 | return err; |
aa5fd0fb | 1571 | destroy_macvlan_port: |
d02fd6e7 GF |
1572 | /* the macvlan port may be freed by macvlan_uninit when fail to register. |
1573 | * so we destroy the macvlan port only when it's valid. | |
1574 | */ | |
23569b56 CW |
1575 | if (create && macvlan_port_get_rtnl(lowerdev)) { |
1576 | macvlan_flush_sources(port, vlan); | |
aa5fd0fb | 1577 | macvlan_port_destroy(port->dev); |
23569b56 | 1578 | } |
f16d3d57 | 1579 | return err; |
b863ceb7 | 1580 | } |
fc0663d6 | 1581 | EXPORT_SYMBOL_GPL(macvlan_common_newlink); |
b863ceb7 | 1582 | |
fc0663d6 | 1583 | static int macvlan_newlink(struct net *src_net, struct net_device *dev, |
7a3f4a18 MS |
1584 | struct nlattr *tb[], struct nlattr *data[], |
1585 | struct netlink_ext_ack *extack) | |
fc0663d6 | 1586 | { |
42ab19ee | 1587 | return macvlan_common_newlink(src_net, dev, tb, data, extack); |
fc0663d6 AB |
1588 | } |
1589 | ||
1590 | void macvlan_dellink(struct net_device *dev, struct list_head *head) | |
b863ceb7 PM |
1591 | { |
1592 | struct macvlan_dev *vlan = netdev_priv(dev); | |
b863ceb7 | 1593 | |
79cf79ab MB |
1594 | if (vlan->mode == MACVLAN_MODE_SOURCE) |
1595 | macvlan_flush_sources(vlan->port, vlan); | |
233c7df0 | 1596 | list_del_rcu(&vlan->list); |
d4bff72c | 1597 | update_port_bc_queue_len(vlan->port); |
23289a37 | 1598 | unregister_netdevice_queue(dev, head); |
7cd43db7 | 1599 | netdev_upper_dev_unlink(vlan->lowerdev, dev); |
b863ceb7 | 1600 | } |
fc0663d6 | 1601 | EXPORT_SYMBOL_GPL(macvlan_dellink); |
b863ceb7 | 1602 | |
27c0b1a8 | 1603 | static int macvlan_changelink(struct net_device *dev, |
ad744b22 MS |
1604 | struct nlattr *tb[], struct nlattr *data[], |
1605 | struct netlink_ext_ack *extack) | |
27c0b1a8 AB |
1606 | { |
1607 | struct macvlan_dev *vlan = netdev_priv(dev); | |
266e8347 MT |
1608 | enum macvlan_mode mode; |
1609 | bool set_mode = false; | |
79cf79ab MB |
1610 | enum macvlan_macaddr_mode macmode; |
1611 | int ret; | |
266e8347 MT |
1612 | |
1613 | /* Validate mode, but don't set yet: setting flags may fail. */ | |
1614 | if (data && data[IFLA_MACVLAN_MODE]) { | |
1615 | set_mode = true; | |
1616 | mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); | |
1617 | /* Passthrough mode can't be set or cleared dynamically */ | |
1618 | if ((mode == MACVLAN_MODE_PASSTHRU) != | |
1619 | (vlan->mode == MACVLAN_MODE_PASSTHRU)) | |
1620 | return -EINVAL; | |
79cf79ab MB |
1621 | if (vlan->mode == MACVLAN_MODE_SOURCE && |
1622 | vlan->mode != mode) | |
1623 | macvlan_flush_sources(vlan->port, vlan); | |
266e8347 | 1624 | } |
99ffc3e7 | 1625 | |
df8ef8f3 JF |
1626 | if (data && data[IFLA_MACVLAN_FLAGS]) { |
1627 | __u16 flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); | |
1628 | bool promisc = (flags ^ vlan->flags) & MACVLAN_FLAG_NOPROMISC; | |
43c2d578 | 1629 | if (macvlan_passthru(vlan->port) && promisc) { |
99ffc3e7 MT |
1630 | int err; |
1631 | ||
1632 | if (flags & MACVLAN_FLAG_NOPROMISC) | |
1633 | err = dev_set_promiscuity(vlan->lowerdev, -1); | |
1634 | else | |
1635 | err = dev_set_promiscuity(vlan->lowerdev, 1); | |
1636 | if (err < 0) | |
1637 | return err; | |
1638 | } | |
df8ef8f3 JF |
1639 | vlan->flags = flags; |
1640 | } | |
d4bff72c TK |
1641 | |
1642 | if (data && data[IFLA_MACVLAN_BC_QUEUE_LEN]) { | |
1643 | vlan->bc_queue_len_req = nla_get_u32(data[IFLA_MACVLAN_BC_QUEUE_LEN]); | |
1644 | update_port_bc_queue_len(vlan->port); | |
1645 | } | |
1646 | ||
954d1fa1 HX |
1647 | if (data && data[IFLA_MACVLAN_BC_CUTOFF]) |
1648 | update_port_bc_cutoff( | |
1649 | vlan, nla_get_s32(data[IFLA_MACVLAN_BC_CUTOFF])); | |
1650 | ||
266e8347 MT |
1651 | if (set_mode) |
1652 | vlan->mode = mode; | |
79cf79ab MB |
1653 | if (data && data[IFLA_MACVLAN_MACADDR_MODE]) { |
1654 | if (vlan->mode != MACVLAN_MODE_SOURCE) | |
1655 | return -EINVAL; | |
1656 | macmode = nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE]); | |
1657 | ret = macvlan_changelink_sources(vlan, macmode, data); | |
1658 | if (ret) | |
1659 | return ret; | |
1660 | } | |
27c0b1a8 AB |
1661 | return 0; |
1662 | } | |
1663 | ||
79cf79ab MB |
1664 | static size_t macvlan_get_size_mac(const struct macvlan_dev *vlan) |
1665 | { | |
1666 | if (vlan->macaddr_count == 0) | |
1667 | return 0; | |
1668 | return nla_total_size(0) /* IFLA_MACVLAN_MACADDR_DATA */ | |
1669 | + vlan->macaddr_count * nla_total_size(sizeof(u8) * ETH_ALEN); | |
1670 | } | |
1671 | ||
27c0b1a8 AB |
1672 | static size_t macvlan_get_size(const struct net_device *dev) |
1673 | { | |
79cf79ab MB |
1674 | struct macvlan_dev *vlan = netdev_priv(dev); |
1675 | ||
01fe944f ED |
1676 | return (0 |
1677 | + nla_total_size(4) /* IFLA_MACVLAN_MODE */ | |
1678 | + nla_total_size(2) /* IFLA_MACVLAN_FLAGS */ | |
79cf79ab MB |
1679 | + nla_total_size(4) /* IFLA_MACVLAN_MACADDR_COUNT */ |
1680 | + macvlan_get_size_mac(vlan) /* IFLA_MACVLAN_MACADDR */ | |
d4bff72c TK |
1681 | + nla_total_size(4) /* IFLA_MACVLAN_BC_QUEUE_LEN */ |
1682 | + nla_total_size(4) /* IFLA_MACVLAN_BC_QUEUE_LEN_USED */ | |
01fe944f | 1683 | ); |
27c0b1a8 AB |
1684 | } |
1685 | ||
79cf79ab MB |
1686 | static int macvlan_fill_info_macaddr(struct sk_buff *skb, |
1687 | const struct macvlan_dev *vlan, | |
1688 | const int i) | |
1689 | { | |
1690 | struct hlist_head *h = &vlan->port->vlan_source_hash[i]; | |
1691 | struct macvlan_source_entry *entry; | |
1692 | ||
5df1341e | 1693 | hlist_for_each_entry_rcu(entry, h, hlist, lockdep_rtnl_is_held()) { |
79cf79ab MB |
1694 | if (entry->vlan != vlan) |
1695 | continue; | |
1696 | if (nla_put(skb, IFLA_MACVLAN_MACADDR, ETH_ALEN, entry->addr)) | |
1697 | return 1; | |
1698 | } | |
1699 | return 0; | |
1700 | } | |
1701 | ||
27c0b1a8 AB |
1702 | static int macvlan_fill_info(struct sk_buff *skb, |
1703 | const struct net_device *dev) | |
1704 | { | |
1705 | struct macvlan_dev *vlan = netdev_priv(dev); | |
d4bff72c | 1706 | struct macvlan_port *port = vlan->port; |
79cf79ab MB |
1707 | int i; |
1708 | struct nlattr *nest; | |
27c0b1a8 | 1709 | |
ead9a76c DM |
1710 | if (nla_put_u32(skb, IFLA_MACVLAN_MODE, vlan->mode)) |
1711 | goto nla_put_failure; | |
df8ef8f3 JF |
1712 | if (nla_put_u16(skb, IFLA_MACVLAN_FLAGS, vlan->flags)) |
1713 | goto nla_put_failure; | |
79cf79ab MB |
1714 | if (nla_put_u32(skb, IFLA_MACVLAN_MACADDR_COUNT, vlan->macaddr_count)) |
1715 | goto nla_put_failure; | |
1716 | if (vlan->macaddr_count > 0) { | |
ae0be8de | 1717 | nest = nla_nest_start_noflag(skb, IFLA_MACVLAN_MACADDR_DATA); |
79cf79ab MB |
1718 | if (nest == NULL) |
1719 | goto nla_put_failure; | |
1720 | ||
1721 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) { | |
1722 | if (macvlan_fill_info_macaddr(skb, vlan, i)) | |
1723 | goto nla_put_failure; | |
1724 | } | |
1725 | nla_nest_end(skb, nest); | |
1726 | } | |
d4bff72c TK |
1727 | if (nla_put_u32(skb, IFLA_MACVLAN_BC_QUEUE_LEN, vlan->bc_queue_len_req)) |
1728 | goto nla_put_failure; | |
1729 | if (nla_put_u32(skb, IFLA_MACVLAN_BC_QUEUE_LEN_USED, port->bc_queue_len_used)) | |
1730 | goto nla_put_failure; | |
954d1fa1 HX |
1731 | if (port->bc_cutoff != 1 && |
1732 | nla_put_s32(skb, IFLA_MACVLAN_BC_CUTOFF, port->bc_cutoff)) | |
1733 | goto nla_put_failure; | |
27c0b1a8 AB |
1734 | return 0; |
1735 | ||
1736 | nla_put_failure: | |
1737 | return -EMSGSIZE; | |
1738 | } | |
1739 | ||
1740 | static const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { | |
df8ef8f3 JF |
1741 | [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, |
1742 | [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 }, | |
79cf79ab MB |
1743 | [IFLA_MACVLAN_MACADDR_MODE] = { .type = NLA_U32 }, |
1744 | [IFLA_MACVLAN_MACADDR] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
1745 | [IFLA_MACVLAN_MACADDR_DATA] = { .type = NLA_NESTED }, | |
1746 | [IFLA_MACVLAN_MACADDR_COUNT] = { .type = NLA_U32 }, | |
d4bff72c TK |
1747 | [IFLA_MACVLAN_BC_QUEUE_LEN] = { .type = NLA_U32 }, |
1748 | [IFLA_MACVLAN_BC_QUEUE_LEN_USED] = { .type = NLA_REJECT }, | |
27c0b1a8 AB |
1749 | }; |
1750 | ||
fc0663d6 AB |
1751 | int macvlan_link_register(struct rtnl_link_ops *ops) |
1752 | { | |
1753 | /* common fields */ | |
fc0663d6 AB |
1754 | ops->validate = macvlan_validate; |
1755 | ops->maxtype = IFLA_MACVLAN_MAX; | |
1756 | ops->policy = macvlan_policy; | |
1757 | ops->changelink = macvlan_changelink; | |
1758 | ops->get_size = macvlan_get_size; | |
1759 | ops->fill_info = macvlan_fill_info; | |
1760 | ||
1761 | return rtnl_link_register(ops); | |
1762 | }; | |
1763 | EXPORT_SYMBOL_GPL(macvlan_link_register); | |
1764 | ||
eaca400f ND |
1765 | static struct net *macvlan_get_link_net(const struct net_device *dev) |
1766 | { | |
1767 | return dev_net(macvlan_dev_real_dev(dev)); | |
1768 | } | |
1769 | ||
fc0663d6 | 1770 | static struct rtnl_link_ops macvlan_link_ops = { |
b863ceb7 | 1771 | .kind = "macvlan", |
8a35747a | 1772 | .setup = macvlan_setup, |
b863ceb7 PM |
1773 | .newlink = macvlan_newlink, |
1774 | .dellink = macvlan_dellink, | |
eaca400f | 1775 | .get_link_net = macvlan_get_link_net, |
6fe3faf8 | 1776 | .priv_size = sizeof(struct macvlan_dev), |
b863ceb7 PM |
1777 | }; |
1778 | ||
d4bff72c TK |
1779 | static void update_port_bc_queue_len(struct macvlan_port *port) |
1780 | { | |
1781 | u32 max_bc_queue_len_req = 0; | |
1782 | struct macvlan_dev *vlan; | |
1783 | ||
1784 | list_for_each_entry(vlan, &port->vlans, list) { | |
1785 | if (vlan->bc_queue_len_req > max_bc_queue_len_req) | |
1786 | max_bc_queue_len_req = vlan->bc_queue_len_req; | |
1787 | } | |
1788 | port->bc_queue_len_used = max_bc_queue_len_req; | |
1789 | } | |
1790 | ||
b863ceb7 PM |
1791 | static int macvlan_device_event(struct notifier_block *unused, |
1792 | unsigned long event, void *ptr) | |
1793 | { | |
351638e7 | 1794 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
b863ceb7 PM |
1795 | struct macvlan_dev *vlan, *next; |
1796 | struct macvlan_port *port; | |
226bd341 | 1797 | LIST_HEAD(list_kill); |
b863ceb7 | 1798 | |
913564fb | 1799 | if (!netif_is_macvlan_port(dev)) |
b863ceb7 PM |
1800 | return NOTIFY_DONE; |
1801 | ||
e052f7e6 | 1802 | port = macvlan_port_get_rtnl(dev); |
a35e2c1b | 1803 | |
b863ceb7 | 1804 | switch (event) { |
de7d244d | 1805 | case NETDEV_UP: |
80fd2d6c | 1806 | case NETDEV_DOWN: |
b863ceb7 PM |
1807 | case NETDEV_CHANGE: |
1808 | list_for_each_entry(vlan, &port->vlans, list) | |
fc4a7489 PM |
1809 | netif_stacked_transfer_operstate(vlan->lowerdev, |
1810 | vlan->dev); | |
b863ceb7 PM |
1811 | break; |
1812 | case NETDEV_FEAT_CHANGE: | |
1813 | list_for_each_entry(vlan, &port->vlans, list) { | |
6df6398f | 1814 | netif_inherit_tso_max(vlan->dev, dev); |
797f87f8 | 1815 | netdev_update_features(vlan->dev); |
b863ceb7 PM |
1816 | } |
1817 | break; | |
3763e7ef | 1818 | case NETDEV_CHANGEMTU: |
1819 | list_for_each_entry(vlan, &port->vlans, list) { | |
1820 | if (vlan->dev->mtu <= dev->mtu) | |
1821 | continue; | |
1822 | dev_set_mtu(vlan->dev, dev->mtu); | |
1823 | } | |
e289fd28 | 1824 | break; |
1825 | case NETDEV_CHANGEADDR: | |
43c2d578 | 1826 | if (!macvlan_passthru(port)) |
e289fd28 | 1827 | return NOTIFY_DONE; |
1828 | ||
1829 | vlan = list_first_entry_or_null(&port->vlans, | |
1830 | struct macvlan_dev, | |
1831 | list); | |
1832 | ||
4dee15b4 | 1833 | if (vlan && macvlan_sync_address(vlan->dev, dev->dev_addr)) |
e289fd28 | 1834 | return NOTIFY_BAD; |
1835 | ||
3763e7ef | 1836 | break; |
b863ceb7 | 1837 | case NETDEV_UNREGISTER: |
3b27e105 DL |
1838 | /* twiddle thumbs on netns device moves */ |
1839 | if (dev->reg_state != NETREG_UNREGISTERING) | |
1840 | break; | |
1841 | ||
b863ceb7 | 1842 | list_for_each_entry_safe(vlan, next, &port->vlans, list) |
226bd341 ED |
1843 | vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); |
1844 | unregister_netdevice_many(&list_kill); | |
b863ceb7 | 1845 | break; |
1c01fe14 | 1846 | case NETDEV_PRE_TYPE_CHANGE: |
26d3f69c | 1847 | /* Forbid underlying device to change its type. */ |
1c01fe14 | 1848 | return NOTIFY_BAD; |
4c991255 VY |
1849 | |
1850 | case NETDEV_NOTIFY_PEERS: | |
1851 | case NETDEV_BONDING_FAILOVER: | |
1852 | case NETDEV_RESEND_IGMP: | |
1853 | /* Propagate to all vlans */ | |
1854 | list_for_each_entry(vlan, &port->vlans, list) | |
1855 | call_netdevice_notifiers(event, vlan->dev); | |
b863ceb7 PM |
1856 | } |
1857 | return NOTIFY_DONE; | |
1858 | } | |
1859 | ||
1860 | static struct notifier_block macvlan_notifier_block __read_mostly = { | |
1861 | .notifier_call = macvlan_device_event, | |
1862 | }; | |
1863 | ||
1864 | static int __init macvlan_init_module(void) | |
1865 | { | |
1866 | int err; | |
1867 | ||
1868 | register_netdevice_notifier(&macvlan_notifier_block); | |
b863ceb7 | 1869 | |
fc0663d6 | 1870 | err = macvlan_link_register(&macvlan_link_ops); |
b863ceb7 PM |
1871 | if (err < 0) |
1872 | goto err1; | |
1873 | return 0; | |
1874 | err1: | |
b863ceb7 PM |
1875 | unregister_netdevice_notifier(&macvlan_notifier_block); |
1876 | return err; | |
1877 | } | |
1878 | ||
1879 | static void __exit macvlan_cleanup_module(void) | |
1880 | { | |
1881 | rtnl_link_unregister(&macvlan_link_ops); | |
b863ceb7 PM |
1882 | unregister_netdevice_notifier(&macvlan_notifier_block); |
1883 | } | |
1884 | ||
1885 | module_init(macvlan_init_module); | |
1886 | module_exit(macvlan_cleanup_module); | |
1887 | ||
1888 | MODULE_LICENSE("GPL"); | |
1889 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); | |
1890 | MODULE_DESCRIPTION("Driver for MAC address based VLANs"); | |
1891 | MODULE_ALIAS_RTNL_LINK("macvlan"); |