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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) | |
07d92d5c | 38 | #define MACVLAN_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; | |
43c2d578 | 49 | u32 flags; |
5e3c516b | 50 | int count; |
79cf79ab | 51 | struct hlist_head vlan_source_hash[MACVLAN_HASH_SIZE]; |
9c127a01 | 52 | DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ); |
18c8c54d | 53 | unsigned char perm_addr[ETH_ALEN]; |
79cf79ab MB |
54 | }; |
55 | ||
56 | struct macvlan_source_entry { | |
57 | struct hlist_node hlist; | |
58 | struct macvlan_dev *vlan; | |
59 | unsigned char addr[6+2] __aligned(sizeof(u16)); | |
60 | struct rcu_head rcu; | |
b863ceb7 PM |
61 | }; |
62 | ||
412ca155 HX |
63 | struct macvlan_skb_cb { |
64 | const struct macvlan_dev *src; | |
65 | }; | |
66 | ||
67 | #define MACVLAN_SKB_CB(__skb) ((struct macvlan_skb_cb *)&((__skb)->cb[0])) | |
68 | ||
d5cd9244 EB |
69 | static void macvlan_port_destroy(struct net_device *dev); |
70 | ||
43c2d578 VY |
71 | static inline bool macvlan_passthru(const struct macvlan_port *port) |
72 | { | |
73 | return port->flags & MACVLAN_F_PASSTHRU; | |
74 | } | |
75 | ||
76 | static inline void macvlan_set_passthru(struct macvlan_port *port) | |
77 | { | |
78 | port->flags |= MACVLAN_F_PASSTHRU; | |
79 | } | |
80 | ||
18c8c54d VY |
81 | static inline bool macvlan_addr_change(const struct macvlan_port *port) |
82 | { | |
83 | return port->flags & MACVLAN_F_ADDRCHANGE; | |
84 | } | |
85 | ||
86 | static inline void macvlan_set_addr_change(struct macvlan_port *port) | |
87 | { | |
88 | port->flags |= MACVLAN_F_ADDRCHANGE; | |
89 | } | |
90 | ||
91 | static inline void macvlan_clear_addr_change(struct macvlan_port *port) | |
92 | { | |
93 | port->flags &= ~MACVLAN_F_ADDRCHANGE; | |
94 | } | |
95 | ||
79cf79ab MB |
96 | /* Hash Ethernet address */ |
97 | static u32 macvlan_eth_hash(const unsigned char *addr) | |
98 | { | |
99 | u64 value = get_unaligned((u64 *)addr); | |
100 | ||
101 | /* only want 6 bytes */ | |
102 | #ifdef __BIG_ENDIAN | |
103 | value >>= 16; | |
104 | #else | |
105 | value <<= 16; | |
106 | #endif | |
107 | return hash_64(value, MACVLAN_HASH_BITS); | |
108 | } | |
109 | ||
e052f7e6 ED |
110 | static struct macvlan_port *macvlan_port_get_rcu(const struct net_device *dev) |
111 | { | |
112 | return rcu_dereference(dev->rx_handler_data); | |
113 | } | |
114 | ||
115 | static struct macvlan_port *macvlan_port_get_rtnl(const struct net_device *dev) | |
116 | { | |
117 | return rtnl_dereference(dev->rx_handler_data); | |
118 | } | |
119 | ||
b863ceb7 PM |
120 | static struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, |
121 | const unsigned char *addr) | |
122 | { | |
123 | struct macvlan_dev *vlan; | |
79cf79ab | 124 | u32 idx = macvlan_eth_hash(addr); |
b863ceb7 | 125 | |
79cf79ab | 126 | hlist_for_each_entry_rcu(vlan, &port->vlan_hash[idx], hlist) { |
a6700db1 | 127 | if (ether_addr_equal_64bits(vlan->dev->dev_addr, addr)) |
b863ceb7 PM |
128 | return vlan; |
129 | } | |
130 | return NULL; | |
131 | } | |
132 | ||
79cf79ab MB |
133 | static struct macvlan_source_entry *macvlan_hash_lookup_source( |
134 | const struct macvlan_dev *vlan, | |
135 | const unsigned char *addr) | |
136 | { | |
137 | struct macvlan_source_entry *entry; | |
138 | u32 idx = macvlan_eth_hash(addr); | |
139 | struct hlist_head *h = &vlan->port->vlan_source_hash[idx]; | |
140 | ||
141 | hlist_for_each_entry_rcu(entry, h, hlist) { | |
142 | if (ether_addr_equal_64bits(entry->addr, addr) && | |
143 | entry->vlan == vlan) | |
144 | return entry; | |
145 | } | |
146 | return NULL; | |
147 | } | |
148 | ||
149 | static int macvlan_hash_add_source(struct macvlan_dev *vlan, | |
150 | const unsigned char *addr) | |
151 | { | |
152 | struct macvlan_port *port = vlan->port; | |
153 | struct macvlan_source_entry *entry; | |
154 | struct hlist_head *h; | |
155 | ||
156 | entry = macvlan_hash_lookup_source(vlan, addr); | |
157 | if (entry) | |
158 | return 0; | |
159 | ||
160 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); | |
161 | if (!entry) | |
162 | return -ENOMEM; | |
163 | ||
164 | ether_addr_copy(entry->addr, addr); | |
165 | entry->vlan = vlan; | |
166 | h = &port->vlan_source_hash[macvlan_eth_hash(addr)]; | |
167 | hlist_add_head_rcu(&entry->hlist, h); | |
168 | vlan->macaddr_count++; | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
f9ac30f0 EB |
173 | static void macvlan_hash_add(struct macvlan_dev *vlan) |
174 | { | |
175 | struct macvlan_port *port = vlan->port; | |
176 | const unsigned char *addr = vlan->dev->dev_addr; | |
79cf79ab | 177 | u32 idx = macvlan_eth_hash(addr); |
f9ac30f0 | 178 | |
79cf79ab MB |
179 | hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[idx]); |
180 | } | |
181 | ||
182 | static void macvlan_hash_del_source(struct macvlan_source_entry *entry) | |
183 | { | |
184 | hlist_del_rcu(&entry->hlist); | |
185 | kfree_rcu(entry, rcu); | |
f9ac30f0 EB |
186 | } |
187 | ||
449f4544 | 188 | static void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) |
f9ac30f0 EB |
189 | { |
190 | hlist_del_rcu(&vlan->hlist); | |
449f4544 ED |
191 | if (sync) |
192 | synchronize_rcu(); | |
f9ac30f0 EB |
193 | } |
194 | ||
195 | static void macvlan_hash_change_addr(struct macvlan_dev *vlan, | |
196 | const unsigned char *addr) | |
197 | { | |
449f4544 | 198 | macvlan_hash_del(vlan, true); |
f9ac30f0 EB |
199 | /* Now that we are unhashed it is safe to change the device |
200 | * address without confusing packet delivery. | |
201 | */ | |
202 | memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); | |
203 | macvlan_hash_add(vlan); | |
204 | } | |
205 | ||
d94d0254 GF |
206 | static bool macvlan_addr_busy(const struct macvlan_port *port, |
207 | const unsigned char *addr) | |
f9ac30f0 | 208 | { |
18c8c54d | 209 | /* Test to see if the specified address is |
f9ac30f0 EB |
210 | * currently in use by the underlying device or |
211 | * another macvlan. | |
212 | */ | |
18c8c54d | 213 | if (!macvlan_passthru(port) && !macvlan_addr_change(port) && |
e696cda7 | 214 | ether_addr_equal_64bits(port->dev->dev_addr, addr)) |
d94d0254 | 215 | return true; |
f9ac30f0 EB |
216 | |
217 | if (macvlan_hash_lookup(port, addr)) | |
d94d0254 | 218 | return true; |
f9ac30f0 | 219 | |
d94d0254 | 220 | return false; |
f9ac30f0 EB |
221 | } |
222 | ||
a1e514c5 | 223 | |
fc0663d6 AB |
224 | static int macvlan_broadcast_one(struct sk_buff *skb, |
225 | const struct macvlan_dev *vlan, | |
618e1b74 | 226 | const struct ethhdr *eth, bool local) |
a1e514c5 | 227 | { |
fc0663d6 | 228 | struct net_device *dev = vlan->dev; |
a1e514c5 | 229 | |
618e1b74 | 230 | if (local) |
412ca155 | 231 | return __dev_forward_skb(dev, skb); |
618e1b74 | 232 | |
a1e514c5 | 233 | skb->dev = dev; |
a6700db1 | 234 | if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast)) |
a1e514c5 AB |
235 | skb->pkt_type = PACKET_BROADCAST; |
236 | else | |
237 | skb->pkt_type = PACKET_MULTICAST; | |
238 | ||
412ca155 | 239 | return 0; |
a1e514c5 AB |
240 | } |
241 | ||
3807ff58 ED |
242 | static u32 macvlan_hash_mix(const struct macvlan_dev *vlan) |
243 | { | |
244 | return (u32)(((unsigned long)vlan) >> L1_CACHE_SHIFT); | |
245 | } | |
246 | ||
247 | ||
248 | static unsigned int mc_hash(const struct macvlan_dev *vlan, | |
249 | const unsigned char *addr) | |
cd431e73 ED |
250 | { |
251 | u32 val = __get_unaligned_cpu32(addr + 2); | |
252 | ||
3807ff58 | 253 | val ^= macvlan_hash_mix(vlan); |
cd431e73 ED |
254 | return hash_32(val, MACVLAN_MC_FILTER_BITS); |
255 | } | |
256 | ||
b863ceb7 | 257 | static void macvlan_broadcast(struct sk_buff *skb, |
618e1b74 AB |
258 | const struct macvlan_port *port, |
259 | struct net_device *src, | |
260 | enum macvlan_mode mode) | |
b863ceb7 | 261 | { |
49a6f9d1 | 262 | const struct ethhdr *eth = eth_hdr(skb); |
b863ceb7 | 263 | const struct macvlan_dev *vlan; |
b863ceb7 PM |
264 | struct sk_buff *nskb; |
265 | unsigned int i; | |
a1e514c5 | 266 | int err; |
3807ff58 | 267 | unsigned int hash; |
b863ceb7 | 268 | |
efbbced3 PM |
269 | if (skb->protocol == htons(ETH_P_PAUSE)) |
270 | return; | |
271 | ||
b863ceb7 | 272 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) { |
b67bfe0d | 273 | hlist_for_each_entry_rcu(vlan, &port->vlan_hash[i], hlist) { |
618e1b74 AB |
274 | if (vlan->dev == src || !(vlan->mode & mode)) |
275 | continue; | |
276 | ||
3807ff58 | 277 | hash = mc_hash(vlan, eth->h_dest); |
cd431e73 ED |
278 | if (!test_bit(hash, vlan->mc_filter)) |
279 | continue; | |
de9e8f3f HX |
280 | |
281 | err = NET_RX_DROP; | |
b863ceb7 | 282 | nskb = skb_clone(skb, GFP_ATOMIC); |
de9e8f3f HX |
283 | if (likely(nskb)) |
284 | err = macvlan_broadcast_one( | |
285 | nskb, vlan, eth, | |
412ca155 HX |
286 | mode == MACVLAN_MODE_BRIDGE) ?: |
287 | netif_rx_ni(nskb); | |
a1e514c5 | 288 | macvlan_count_rx(vlan, skb->len + ETH_HLEN, |
4c979935 | 289 | err == NET_RX_SUCCESS, true); |
b863ceb7 PM |
290 | } |
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); |
5c6dd481 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); |
07d92d5c | 356 | if (skb_queue_len(&port->bc_queue) < MACVLAN_BC_QUEUE_LEN) { |
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 | ||
3bfe88a2 MD |
364 | schedule_work(&port->bc_work); |
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 HX |
373 | err: |
374 | atomic_long_inc(&skb->dev->rx_dropped); | |
375 | } | |
376 | ||
79cf79ab MB |
377 | static void macvlan_flush_sources(struct macvlan_port *port, |
378 | struct macvlan_dev *vlan) | |
379 | { | |
380 | int i; | |
381 | ||
382 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) { | |
383 | struct hlist_node *h, *n; | |
384 | ||
385 | hlist_for_each_safe(h, n, &port->vlan_source_hash[i]) { | |
386 | struct macvlan_source_entry *entry; | |
387 | ||
388 | entry = hlist_entry(h, struct macvlan_source_entry, | |
389 | hlist); | |
390 | if (entry->vlan == vlan) | |
391 | macvlan_hash_del_source(entry); | |
392 | } | |
393 | } | |
394 | vlan->macaddr_count = 0; | |
395 | } | |
396 | ||
397 | static void macvlan_forward_source_one(struct sk_buff *skb, | |
398 | struct macvlan_dev *vlan) | |
399 | { | |
400 | struct sk_buff *nskb; | |
401 | struct net_device *dev; | |
402 | int len; | |
403 | int ret; | |
404 | ||
405 | dev = vlan->dev; | |
406 | if (unlikely(!(dev->flags & IFF_UP))) | |
407 | return; | |
408 | ||
409 | nskb = skb_clone(skb, GFP_ATOMIC); | |
410 | if (!nskb) | |
411 | return; | |
412 | ||
413 | len = nskb->len + ETH_HLEN; | |
414 | nskb->dev = dev; | |
c8c41ea1 AD |
415 | |
416 | if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, dev->dev_addr)) | |
417 | nskb->pkt_type = PACKET_HOST; | |
79cf79ab MB |
418 | |
419 | ret = netif_rx(nskb); | |
4c979935 | 420 | macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, false); |
79cf79ab MB |
421 | } |
422 | ||
423 | static void macvlan_forward_source(struct sk_buff *skb, | |
424 | struct macvlan_port *port, | |
425 | const unsigned char *addr) | |
426 | { | |
427 | struct macvlan_source_entry *entry; | |
428 | u32 idx = macvlan_eth_hash(addr); | |
429 | struct hlist_head *h = &port->vlan_source_hash[idx]; | |
430 | ||
431 | hlist_for_each_entry_rcu(entry, h, hlist) { | |
432 | if (ether_addr_equal_64bits(entry->addr, addr)) | |
fc51f2b7 | 433 | macvlan_forward_source_one(skb, entry->vlan); |
79cf79ab MB |
434 | } |
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 | |
cdb00fd5 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); |
79cf79ab | 463 | macvlan_forward_source(skb, port, eth->h_source); |
412ca155 HX |
464 | src = macvlan_hash_lookup(port, eth->h_source); |
465 | if (src && src->mode != MACVLAN_MODE_VEPA && | |
466 | src->mode != MACVLAN_MODE_BRIDGE) { | |
729e72a1 | 467 | /* forward to original port. */ |
468 | vlan = src; | |
412ca155 HX |
469 | ret = macvlan_broadcast_one(skb, vlan, eth, 0) ?: |
470 | netif_rx(skb); | |
d1dd9119 | 471 | handle_res = RX_HANDLER_CONSUMED; |
729e72a1 | 472 | goto out; |
473 | } | |
474 | ||
9c127a01 HX |
475 | hash = mc_hash(NULL, eth->h_dest); |
476 | if (test_bit(hash, port->mc_filter)) | |
477 | macvlan_broadcast_enqueue(port, src, skb); | |
412ca155 | 478 | |
8a4eb573 | 479 | return RX_HANDLER_PASS; |
b863ceb7 PM |
480 | } |
481 | ||
79cf79ab | 482 | macvlan_forward_source(skb, port, eth->h_source); |
43c2d578 | 483 | if (macvlan_passthru(port)) |
233c7df0 JP |
484 | vlan = list_first_or_null_rcu(&port->vlans, |
485 | struct macvlan_dev, list); | |
eb06acdc SS |
486 | else |
487 | vlan = macvlan_hash_lookup(port, eth->h_dest); | |
dd6b9c2c | 488 | if (!vlan || vlan->mode == MACVLAN_MODE_SOURCE) |
8a4eb573 | 489 | return RX_HANDLER_PASS; |
b863ceb7 PM |
490 | |
491 | dev = vlan->dev; | |
492 | if (unlikely(!(dev->flags & IFF_UP))) { | |
493 | kfree_skb(skb); | |
8a4eb573 | 494 | return RX_HANDLER_CONSUMED; |
b863ceb7 | 495 | } |
a1e514c5 | 496 | len = skb->len + ETH_HLEN; |
b863ceb7 | 497 | skb = skb_share_check(skb, GFP_ATOMIC); |
d1dd9119 | 498 | if (!skb) { |
499 | ret = NET_RX_DROP; | |
500 | handle_res = RX_HANDLER_CONSUMED; | |
ba01877f | 501 | goto out; |
d1dd9119 | 502 | } |
b863ceb7 | 503 | |
e639b8d8 | 504 | *pskb = skb; |
b863ceb7 PM |
505 | skb->dev = dev; |
506 | skb->pkt_type = PACKET_HOST; | |
507 | ||
d1dd9119 | 508 | ret = NET_RX_SUCCESS; |
509 | handle_res = RX_HANDLER_ANOTHER; | |
ba01877f | 510 | out: |
4c979935 | 511 | macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, false); |
d1dd9119 | 512 | return handle_res; |
b863ceb7 PM |
513 | } |
514 | ||
618e1b74 AB |
515 | static int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) |
516 | { | |
517 | const struct macvlan_dev *vlan = netdev_priv(dev); | |
518 | const struct macvlan_port *port = vlan->port; | |
519 | const struct macvlan_dev *dest; | |
520 | ||
521 | if (vlan->mode == MACVLAN_MODE_BRIDGE) { | |
49a6f9d1 | 522 | const struct ethhdr *eth = skb_eth_hdr(skb); |
618e1b74 AB |
523 | |
524 | /* send to other bridge ports directly */ | |
525 | if (is_multicast_ether_addr(eth->h_dest)) { | |
49a6f9d1 | 526 | skb_reset_mac_header(skb); |
618e1b74 AB |
527 | macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); |
528 | goto xmit_world; | |
529 | } | |
530 | ||
531 | dest = macvlan_hash_lookup(port, eth->h_dest); | |
532 | if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { | |
a37dd333 | 533 | /* send to lowerdev first for its network taps */ |
cb2d0f3e | 534 | dev_forward_skb(vlan->lowerdev, skb); |
618e1b74 AB |
535 | |
536 | return NET_XMIT_SUCCESS; | |
537 | } | |
538 | } | |
618e1b74 | 539 | xmit_world: |
59b9997b | 540 | skb->dev = vlan->lowerdev; |
eadec877 AD |
541 | return dev_queue_xmit_accel(skb, |
542 | netdev_get_sb_channel(dev) ? dev : NULL); | |
618e1b74 AB |
543 | } |
544 | ||
688cea83 | 545 | static inline netdev_tx_t macvlan_netpoll_send_skb(struct macvlan_dev *vlan, struct sk_buff *skb) |
546 | { | |
547 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
548 | if (vlan->netpoll) | |
549 | netpoll_send_skb(vlan->netpoll, skb); | |
550 | #else | |
551 | BUG(); | |
552 | #endif | |
553 | return NETDEV_TX_OK; | |
554 | } | |
555 | ||
0db901bd | 556 | static netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, |
557 | struct net_device *dev) | |
b863ceb7 | 558 | { |
81d4e91c | 559 | struct macvlan_dev *vlan = netdev_priv(dev); |
b863ceb7 PM |
560 | unsigned int len = skb->len; |
561 | int ret; | |
688cea83 | 562 | |
563 | if (unlikely(netpoll_tx_running(dev))) | |
564 | return macvlan_netpoll_send_skb(vlan, skb); | |
b863ceb7 | 565 | |
81d4e91c | 566 | ret = macvlan_queue_xmit(skb, dev); |
a6cc0cfa | 567 | |
2d6c9ffc | 568 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
cdf3e274 | 569 | struct vlan_pcpu_stats *pcpu_stats; |
2c114553 | 570 | |
8ffab51b ED |
571 | pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); |
572 | u64_stats_update_begin(&pcpu_stats->syncp); | |
573 | pcpu_stats->tx_packets++; | |
574 | pcpu_stats->tx_bytes += len; | |
575 | u64_stats_update_end(&pcpu_stats->syncp); | |
576 | } else { | |
577 | this_cpu_inc(vlan->pcpu_stats->tx_dropped); | |
578 | } | |
cbbef5e1 | 579 | return ret; |
b863ceb7 PM |
580 | } |
581 | ||
582 | static int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, | |
3b04ddde SH |
583 | unsigned short type, const void *daddr, |
584 | const void *saddr, unsigned len) | |
b863ceb7 PM |
585 | { |
586 | const struct macvlan_dev *vlan = netdev_priv(dev); | |
587 | struct net_device *lowerdev = vlan->lowerdev; | |
588 | ||
0c4e8581 SH |
589 | return dev_hard_header(skb, lowerdev, type, daddr, |
590 | saddr ? : dev->dev_addr, len); | |
b863ceb7 PM |
591 | } |
592 | ||
3b04ddde SH |
593 | static const struct header_ops macvlan_hard_header_ops = { |
594 | .create = macvlan_hard_header, | |
3b04ddde | 595 | .parse = eth_header_parse, |
3b04ddde SH |
596 | .cache = eth_header_cache, |
597 | .cache_update = eth_header_cache_update, | |
598 | }; | |
599 | ||
b863ceb7 PM |
600 | static int macvlan_open(struct net_device *dev) |
601 | { | |
602 | struct macvlan_dev *vlan = netdev_priv(dev); | |
b863ceb7 PM |
603 | struct net_device *lowerdev = vlan->lowerdev; |
604 | int err; | |
605 | ||
43c2d578 | 606 | if (macvlan_passthru(vlan->port)) { |
78738141 MT |
607 | if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) { |
608 | err = dev_set_promiscuity(lowerdev, 1); | |
609 | if (err < 0) | |
610 | goto out; | |
611 | } | |
eb06acdc SS |
612 | goto hash_add; |
613 | } | |
614 | ||
59f997b0 | 615 | err = -EADDRINUSE; |
7d775f63 AD |
616 | if (macvlan_addr_busy(vlan->port, dev->dev_addr)) |
617 | goto out; | |
618 | ||
619 | /* Attempt to populate accel_priv which is used to offload the L2 | |
620 | * forwarding requests for unicast packets. | |
621 | */ | |
81d4e91c | 622 | if (lowerdev->features & NETIF_F_HW_L2FW_DOFFLOAD) |
7d775f63 | 623 | vlan->accel_priv = |
a6cc0cfa JF |
624 | lowerdev->netdev_ops->ndo_dfwd_add_station(lowerdev, dev); |
625 | ||
81d4e91c AD |
626 | /* If earlier attempt to offload failed, or accel_priv is not |
627 | * populated we must add the unicast address to the lower device. | |
628 | */ | |
629 | if (IS_ERR_OR_NULL(vlan->accel_priv)) { | |
630 | vlan->accel_priv = NULL; | |
631 | err = dev_uc_add(lowerdev, dev->dev_addr); | |
632 | if (err < 0) | |
633 | goto out; | |
a6cc0cfa JF |
634 | } |
635 | ||
b89fb7da WC |
636 | if (dev->flags & IFF_ALLMULTI) { |
637 | err = dev_set_allmulti(lowerdev, 1); | |
638 | if (err < 0) | |
639 | goto del_unicast; | |
640 | } | |
eb06acdc | 641 | |
efdbd2b3 VY |
642 | if (dev->flags & IFF_PROMISC) { |
643 | err = dev_set_promiscuity(lowerdev, 1); | |
644 | if (err < 0) | |
645 | goto clear_multi; | |
646 | } | |
647 | ||
eb06acdc | 648 | hash_add: |
f9ac30f0 | 649 | macvlan_hash_add(vlan); |
b863ceb7 | 650 | return 0; |
b89fb7da | 651 | |
efdbd2b3 | 652 | clear_multi: |
c3891fa2 GF |
653 | if (dev->flags & IFF_ALLMULTI) |
654 | dev_set_allmulti(lowerdev, -1); | |
b89fb7da | 655 | del_unicast: |
7d775f63 | 656 | if (vlan->accel_priv) { |
a6cc0cfa | 657 | lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, |
7d775f63 AD |
658 | vlan->accel_priv); |
659 | vlan->accel_priv = NULL; | |
81d4e91c AD |
660 | } else { |
661 | dev_uc_del(lowerdev, dev->dev_addr); | |
a6cc0cfa | 662 | } |
81d4e91c | 663 | out: |
b89fb7da | 664 | return err; |
b863ceb7 PM |
665 | } |
666 | ||
667 | static int macvlan_stop(struct net_device *dev) | |
668 | { | |
669 | struct macvlan_dev *vlan = netdev_priv(dev); | |
670 | struct net_device *lowerdev = vlan->lowerdev; | |
671 | ||
7d775f63 | 672 | if (vlan->accel_priv) { |
a6cc0cfa | 673 | lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, |
7d775f63 AD |
674 | vlan->accel_priv); |
675 | vlan->accel_priv = NULL; | |
a6cc0cfa JF |
676 | } |
677 | ||
df8ef8f3 JF |
678 | dev_uc_unsync(lowerdev, dev); |
679 | dev_mc_unsync(lowerdev, dev); | |
680 | ||
43c2d578 | 681 | if (macvlan_passthru(vlan->port)) { |
df8ef8f3 JF |
682 | if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) |
683 | dev_set_promiscuity(lowerdev, -1); | |
eb06acdc SS |
684 | goto hash_del; |
685 | } | |
686 | ||
b863ceb7 PM |
687 | if (dev->flags & IFF_ALLMULTI) |
688 | dev_set_allmulti(lowerdev, -1); | |
689 | ||
efdbd2b3 VY |
690 | if (dev->flags & IFF_PROMISC) |
691 | dev_set_promiscuity(lowerdev, -1); | |
692 | ||
a748ee24 | 693 | dev_uc_del(lowerdev, dev->dev_addr); |
b863ceb7 | 694 | |
eb06acdc | 695 | hash_del: |
449f4544 | 696 | macvlan_hash_del(vlan, !dev->dismantle); |
b863ceb7 PM |
697 | return 0; |
698 | } | |
699 | ||
e289fd28 | 700 | static int macvlan_sync_address(struct net_device *dev, unsigned char *addr) |
ad5d20a6 PM |
701 | { |
702 | struct macvlan_dev *vlan = netdev_priv(dev); | |
703 | struct net_device *lowerdev = vlan->lowerdev; | |
18c8c54d | 704 | struct macvlan_port *port = vlan->port; |
ad5d20a6 PM |
705 | int err; |
706 | ||
f9ac30f0 EB |
707 | if (!(dev->flags & IFF_UP)) { |
708 | /* Just copy in the new address */ | |
e289fd28 | 709 | ether_addr_copy(dev->dev_addr, addr); |
f9ac30f0 EB |
710 | } else { |
711 | /* Rehash and update the device filters */ | |
e289fd28 | 712 | if (macvlan_addr_busy(vlan->port, addr)) |
59f997b0 | 713 | return -EADDRINUSE; |
ad5d20a6 | 714 | |
18c8c54d | 715 | if (!macvlan_passthru(port)) { |
e289fd28 | 716 | err = dev_uc_add(lowerdev, addr); |
717 | if (err) | |
718 | return err; | |
ad5d20a6 | 719 | |
e289fd28 | 720 | dev_uc_del(lowerdev, dev->dev_addr); |
721 | } | |
f9ac30f0 | 722 | |
e289fd28 | 723 | macvlan_hash_change_addr(vlan, addr); |
f9ac30f0 | 724 | } |
18c8c54d VY |
725 | if (macvlan_passthru(port) && !macvlan_addr_change(port)) { |
726 | /* Since addr_change isn't set, we are here due to lower | |
727 | * device change. Save the lower-dev address so we can | |
728 | * restore it later. | |
729 | */ | |
730 | ether_addr_copy(vlan->port->perm_addr, | |
731 | lowerdev->dev_addr); | |
732 | } | |
733 | macvlan_clear_addr_change(port); | |
ad5d20a6 PM |
734 | return 0; |
735 | } | |
736 | ||
e289fd28 | 737 | static int macvlan_set_mac_address(struct net_device *dev, void *p) |
738 | { | |
739 | struct macvlan_dev *vlan = netdev_priv(dev); | |
740 | struct sockaddr *addr = p; | |
741 | ||
742 | if (!is_valid_ether_addr(addr->sa_data)) | |
743 | return -EADDRNOTAVAIL; | |
744 | ||
e26f43fa VY |
745 | /* If the addresses are the same, this is a no-op */ |
746 | if (ether_addr_equal(dev->dev_addr, addr->sa_data)) | |
747 | return 0; | |
748 | ||
e289fd28 | 749 | if (vlan->mode == MACVLAN_MODE_PASSTHRU) { |
18c8c54d | 750 | macvlan_set_addr_change(vlan->port); |
3a37a963 | 751 | return dev_set_mac_address(vlan->lowerdev, addr, NULL); |
e289fd28 | 752 | } |
753 | ||
59f997b0 MC |
754 | if (macvlan_addr_busy(vlan->port, addr->sa_data)) |
755 | return -EADDRINUSE; | |
756 | ||
e289fd28 | 757 | return macvlan_sync_address(dev, addr->sa_data); |
758 | } | |
759 | ||
b863ceb7 PM |
760 | static void macvlan_change_rx_flags(struct net_device *dev, int change) |
761 | { | |
762 | struct macvlan_dev *vlan = netdev_priv(dev); | |
763 | struct net_device *lowerdev = vlan->lowerdev; | |
764 | ||
bbeb0ead PC |
765 | if (dev->flags & IFF_UP) { |
766 | if (change & IFF_ALLMULTI) | |
767 | dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
efdbd2b3 VY |
768 | if (change & IFF_PROMISC) |
769 | dev_set_promiscuity(lowerdev, | |
770 | dev->flags & IFF_PROMISC ? 1 : -1); | |
771 | ||
bbeb0ead | 772 | } |
b863ceb7 PM |
773 | } |
774 | ||
9c127a01 HX |
775 | static void macvlan_compute_filter(unsigned long *mc_filter, |
776 | struct net_device *dev, | |
777 | struct macvlan_dev *vlan) | |
b863ceb7 | 778 | { |
cd431e73 | 779 | if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { |
9c127a01 | 780 | bitmap_fill(mc_filter, MACVLAN_MC_FILTER_SZ); |
cd431e73 ED |
781 | } else { |
782 | struct netdev_hw_addr *ha; | |
783 | DECLARE_BITMAP(filter, MACVLAN_MC_FILTER_SZ); | |
784 | ||
785 | bitmap_zero(filter, MACVLAN_MC_FILTER_SZ); | |
786 | netdev_for_each_mc_addr(ha, dev) { | |
3807ff58 | 787 | __set_bit(mc_hash(vlan, ha->addr), filter); |
cd431e73 | 788 | } |
d5270430 | 789 | |
3807ff58 | 790 | __set_bit(mc_hash(vlan, dev->broadcast), filter); |
d5270430 | 791 | |
9c127a01 | 792 | bitmap_copy(mc_filter, filter, MACVLAN_MC_FILTER_SZ); |
cd431e73 | 793 | } |
9c127a01 HX |
794 | } |
795 | ||
796 | static void macvlan_set_mac_lists(struct net_device *dev) | |
797 | { | |
798 | struct macvlan_dev *vlan = netdev_priv(dev); | |
799 | ||
800 | macvlan_compute_filter(vlan->mc_filter, dev, vlan); | |
801 | ||
df8ef8f3 | 802 | dev_uc_sync(vlan->lowerdev, dev); |
b863ceb7 | 803 | dev_mc_sync(vlan->lowerdev, dev); |
9c127a01 HX |
804 | |
805 | /* This is slightly inaccurate as we're including the subscription | |
806 | * list of vlan->lowerdev too. | |
807 | * | |
808 | * Bug alert: This only works if everyone has the same broadcast | |
809 | * address as lowerdev. As soon as someone changes theirs this | |
810 | * will break. | |
811 | * | |
812 | * However, this is already broken as when you change your broadcast | |
813 | * address we don't get called. | |
814 | * | |
815 | * The solution is to maintain a list of broadcast addresses like | |
816 | * we do for uc/mc, if you care. | |
817 | */ | |
818 | macvlan_compute_filter(vlan->port->mc_filter, vlan->lowerdev, NULL); | |
b863ceb7 PM |
819 | } |
820 | ||
821 | static int macvlan_change_mtu(struct net_device *dev, int new_mtu) | |
822 | { | |
823 | struct macvlan_dev *vlan = netdev_priv(dev); | |
824 | ||
91572088 | 825 | if (vlan->lowerdev->mtu < new_mtu) |
b863ceb7 PM |
826 | return -EINVAL; |
827 | dev->mtu = new_mtu; | |
828 | return 0; | |
829 | } | |
830 | ||
254c0a2b HL |
831 | static int macvlan_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
832 | { | |
833 | struct net_device *real_dev = macvlan_dev_real_dev(dev); | |
834 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
835 | struct ifreq ifrr; | |
836 | int err = -EOPNOTSUPP; | |
837 | ||
36f18439 | 838 | strscpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); |
254c0a2b HL |
839 | ifrr.ifr_ifru = ifr->ifr_ifru; |
840 | ||
841 | switch (cmd) { | |
842 | case SIOCSHWTSTAMP: | |
6c2ea9eb HL |
843 | if (!net_eq(dev_net(dev), &init_net)) |
844 | break; | |
02596252 | 845 | /* fall through */ |
254c0a2b HL |
846 | case SIOCGHWTSTAMP: |
847 | if (netif_device_present(real_dev) && ops->ndo_do_ioctl) | |
848 | err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); | |
849 | break; | |
850 | } | |
851 | ||
852 | if (!err) | |
853 | ifr->ifr_ifru = ifrr.ifr_ifru; | |
854 | ||
855 | return err; | |
856 | } | |
857 | ||
b863ceb7 PM |
858 | /* |
859 | * macvlan network devices have devices nesting below it and are a special | |
860 | * "super class" of normal network devices; split their locks off into a | |
861 | * separate class since they always nest. | |
862 | */ | |
70957eae VY |
863 | #define ALWAYS_ON_OFFLOADS \ |
864 | (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_GSO_SOFTWARE | \ | |
f21e5077 | 865 | NETIF_F_GSO_ROBUST | NETIF_F_GSO_ENCAP_ALL) |
8b4703e9 | 866 | |
70957eae VY |
867 | #define ALWAYS_ON_FEATURES (ALWAYS_ON_OFFLOADS | NETIF_F_LLTX) |
868 | ||
b863ceb7 | 869 | #define MACVLAN_FEATURES \ |
a188222b | 870 | (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ |
fb652fdf | 871 | NETIF_F_GSO | NETIF_F_TSO | NETIF_F_LRO | \ |
8d13e670 | 872 | NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ |
28d2b136 | 873 | NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER) |
b863ceb7 PM |
874 | |
875 | #define MACVLAN_STATE_MASK \ | |
876 | ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) | |
877 | ||
878 | static int macvlan_init(struct net_device *dev) | |
879 | { | |
880 | struct macvlan_dev *vlan = netdev_priv(dev); | |
881 | const struct net_device *lowerdev = vlan->lowerdev; | |
30837960 | 882 | struct macvlan_port *port = vlan->port; |
b863ceb7 PM |
883 | |
884 | dev->state = (dev->state & ~MACVLAN_STATE_MASK) | | |
885 | (lowerdev->state & MACVLAN_STATE_MASK); | |
886 | dev->features = lowerdev->features & MACVLAN_FEATURES; | |
8b4703e9 | 887 | dev->features |= ALWAYS_ON_FEATURES; |
62dbe830 | 888 | dev->hw_features |= NETIF_F_LRO; |
081e83a7 | 889 | dev->vlan_features = lowerdev->vlan_features & MACVLAN_FEATURES; |
70957eae | 890 | dev->vlan_features |= ALWAYS_ON_OFFLOADS; |
f21e5077 | 891 | dev->hw_enc_features |= dev->features; |
8c2acc53 | 892 | dev->gso_max_size = lowerdev->gso_max_size; |
f6773c5e | 893 | dev->gso_max_segs = lowerdev->gso_max_segs; |
ef5c8996 | 894 | dev->hard_header_len = lowerdev->hard_header_len; |
b863ceb7 | 895 | |
1c213bd2 | 896 | vlan->pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats); |
8ffab51b | 897 | if (!vlan->pcpu_stats) |
fccaf710 ED |
898 | return -ENOMEM; |
899 | ||
30837960 FR |
900 | port->count += 1; |
901 | ||
b863ceb7 PM |
902 | return 0; |
903 | } | |
904 | ||
fccaf710 ED |
905 | static void macvlan_uninit(struct net_device *dev) |
906 | { | |
907 | struct macvlan_dev *vlan = netdev_priv(dev); | |
d5cd9244 | 908 | struct macvlan_port *port = vlan->port; |
fccaf710 | 909 | |
8ffab51b | 910 | free_percpu(vlan->pcpu_stats); |
d5cd9244 | 911 | |
79cf79ab | 912 | macvlan_flush_sources(port, vlan); |
5e3c516b DM |
913 | port->count -= 1; |
914 | if (!port->count) | |
d5cd9244 | 915 | macvlan_port_destroy(port->dev); |
fccaf710 ED |
916 | } |
917 | ||
bc1f4470 | 918 | static void macvlan_dev_get_stats64(struct net_device *dev, |
919 | struct rtnl_link_stats64 *stats) | |
fccaf710 | 920 | { |
fccaf710 ED |
921 | struct macvlan_dev *vlan = netdev_priv(dev); |
922 | ||
8ffab51b | 923 | if (vlan->pcpu_stats) { |
cdf3e274 | 924 | struct vlan_pcpu_stats *p; |
8ffab51b ED |
925 | u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; |
926 | u32 rx_errors = 0, tx_dropped = 0; | |
bc66154e | 927 | unsigned int start; |
fccaf710 ED |
928 | int i; |
929 | ||
930 | for_each_possible_cpu(i) { | |
8ffab51b | 931 | p = per_cpu_ptr(vlan->pcpu_stats, i); |
bc66154e | 932 | do { |
57a7744e | 933 | start = u64_stats_fetch_begin_irq(&p->syncp); |
bc66154e ED |
934 | rx_packets = p->rx_packets; |
935 | rx_bytes = p->rx_bytes; | |
936 | rx_multicast = p->rx_multicast; | |
8ffab51b ED |
937 | tx_packets = p->tx_packets; |
938 | tx_bytes = p->tx_bytes; | |
57a7744e | 939 | } while (u64_stats_fetch_retry_irq(&p->syncp, start)); |
8ffab51b ED |
940 | |
941 | stats->rx_packets += rx_packets; | |
942 | stats->rx_bytes += rx_bytes; | |
943 | stats->multicast += rx_multicast; | |
944 | stats->tx_packets += tx_packets; | |
945 | stats->tx_bytes += tx_bytes; | |
946 | /* rx_errors & tx_dropped are u32, updated | |
947 | * without syncp protection. | |
948 | */ | |
949 | rx_errors += p->rx_errors; | |
950 | tx_dropped += p->tx_dropped; | |
fccaf710 | 951 | } |
8ffab51b ED |
952 | stats->rx_errors = rx_errors; |
953 | stats->rx_dropped = rx_errors; | |
954 | stats->tx_dropped = tx_dropped; | |
fccaf710 | 955 | } |
fccaf710 ED |
956 | } |
957 | ||
8e586137 | 958 | static int macvlan_vlan_rx_add_vid(struct net_device *dev, |
80d5c368 | 959 | __be16 proto, u16 vid) |
8d13e670 JF |
960 | { |
961 | struct macvlan_dev *vlan = netdev_priv(dev); | |
962 | struct net_device *lowerdev = vlan->lowerdev; | |
8d13e670 | 963 | |
80d5c368 | 964 | return vlan_vid_add(lowerdev, proto, vid); |
8d13e670 JF |
965 | } |
966 | ||
8e586137 | 967 | static int macvlan_vlan_rx_kill_vid(struct net_device *dev, |
80d5c368 | 968 | __be16 proto, u16 vid) |
8d13e670 JF |
969 | { |
970 | struct macvlan_dev *vlan = netdev_priv(dev); | |
971 | struct net_device *lowerdev = vlan->lowerdev; | |
8d13e670 | 972 | |
80d5c368 | 973 | vlan_vid_del(lowerdev, proto, vid); |
8e586137 | 974 | return 0; |
8d13e670 JF |
975 | } |
976 | ||
edc7d573 | 977 | static int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], |
df8ef8f3 | 978 | struct net_device *dev, |
f6f6424b | 979 | const unsigned char *addr, u16 vid, |
87b0984e PM |
980 | u16 flags, |
981 | struct netlink_ext_ack *extack) | |
df8ef8f3 JF |
982 | { |
983 | struct macvlan_dev *vlan = netdev_priv(dev); | |
984 | int err = -EINVAL; | |
985 | ||
8a50f11c VY |
986 | /* Support unicast filter only on passthru devices. |
987 | * Multicast filter should be allowed on all devices. | |
988 | */ | |
43c2d578 | 989 | if (!macvlan_passthru(vlan->port) && is_unicast_ether_addr(addr)) |
df8ef8f3 JF |
990 | return -EOPNOTSUPP; |
991 | ||
ab2cfbb2 TR |
992 | if (flags & NLM_F_REPLACE) |
993 | return -EOPNOTSUPP; | |
994 | ||
df8ef8f3 JF |
995 | if (is_unicast_ether_addr(addr)) |
996 | err = dev_uc_add_excl(dev, addr); | |
997 | else if (is_multicast_ether_addr(addr)) | |
998 | err = dev_mc_add_excl(dev, addr); | |
999 | ||
1000 | return err; | |
1001 | } | |
1002 | ||
1690be63 | 1003 | static int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], |
df8ef8f3 | 1004 | struct net_device *dev, |
f6f6424b | 1005 | const unsigned char *addr, u16 vid) |
df8ef8f3 JF |
1006 | { |
1007 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1008 | int err = -EINVAL; | |
1009 | ||
8a50f11c VY |
1010 | /* Support unicast filter only on passthru devices. |
1011 | * Multicast filter should be allowed on all devices. | |
1012 | */ | |
43c2d578 | 1013 | if (!macvlan_passthru(vlan->port) && is_unicast_ether_addr(addr)) |
df8ef8f3 JF |
1014 | return -EOPNOTSUPP; |
1015 | ||
1016 | if (is_unicast_ether_addr(addr)) | |
1017 | err = dev_uc_del(dev, addr); | |
1018 | else if (is_multicast_ether_addr(addr)) | |
1019 | err = dev_mc_del(dev, addr); | |
1020 | ||
1021 | return err; | |
1022 | } | |
1023 | ||
b863ceb7 PM |
1024 | static void macvlan_ethtool_get_drvinfo(struct net_device *dev, |
1025 | struct ethtool_drvinfo *drvinfo) | |
1026 | { | |
7826d43f JP |
1027 | strlcpy(drvinfo->driver, "macvlan", sizeof(drvinfo->driver)); |
1028 | strlcpy(drvinfo->version, "0.1", sizeof(drvinfo->version)); | |
b863ceb7 PM |
1029 | } |
1030 | ||
85f95819 DD |
1031 | static int macvlan_ethtool_get_link_ksettings(struct net_device *dev, |
1032 | struct ethtool_link_ksettings *cmd) | |
9edb8bb6 SH |
1033 | { |
1034 | const struct macvlan_dev *vlan = netdev_priv(dev); | |
4bc71cb9 | 1035 | |
85f95819 | 1036 | return __ethtool_get_link_ksettings(vlan->lowerdev, cmd); |
9edb8bb6 SH |
1037 | } |
1038 | ||
254c0a2b HL |
1039 | static int macvlan_ethtool_get_ts_info(struct net_device *dev, |
1040 | struct ethtool_ts_info *info) | |
1041 | { | |
1042 | struct net_device *real_dev = macvlan_dev_real_dev(dev); | |
1043 | const struct ethtool_ops *ops = real_dev->ethtool_ops; | |
1044 | struct phy_device *phydev = real_dev->phydev; | |
1045 | ||
1046 | if (phydev && phydev->drv && phydev->drv->ts_info) { | |
1047 | return phydev->drv->ts_info(phydev, info); | |
1048 | } else if (ops->get_ts_info) { | |
1049 | return ops->get_ts_info(real_dev, info); | |
1050 | } else { | |
1051 | info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE | | |
1052 | SOF_TIMESTAMPING_SOFTWARE; | |
1053 | info->phc_index = -1; | |
1054 | } | |
1055 | ||
1056 | return 0; | |
1057 | } | |
1058 | ||
2be5c767 VY |
1059 | static netdev_features_t macvlan_fix_features(struct net_device *dev, |
1060 | netdev_features_t features) | |
1061 | { | |
1062 | struct macvlan_dev *vlan = netdev_priv(dev); | |
62dbe830 | 1063 | netdev_features_t lowerdev_features = vlan->lowerdev->features; |
797f87f8 | 1064 | netdev_features_t mask; |
2be5c767 | 1065 | |
797f87f8 FW |
1066 | features |= NETIF_F_ALL_FOR_ALL; |
1067 | features &= (vlan->set_features | ~MACVLAN_FEATURES); | |
1068 | mask = features; | |
1069 | ||
62dbe830 MK |
1070 | lowerdev_features &= (features | ~NETIF_F_LRO); |
1071 | features = netdev_increment_features(lowerdev_features, features, mask); | |
8b4703e9 | 1072 | features |= ALWAYS_ON_FEATURES; |
13fbcc8d | 1073 | features &= (ALWAYS_ON_FEATURES | MACVLAN_FEATURES); |
797f87f8 FW |
1074 | |
1075 | return features; | |
2be5c767 VY |
1076 | } |
1077 | ||
688cea83 | 1078 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1079 | static void macvlan_dev_poll_controller(struct net_device *dev) | |
1080 | { | |
1081 | return; | |
1082 | } | |
1083 | ||
1084 | static int macvlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) | |
1085 | { | |
1086 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1087 | struct net_device *real_dev = vlan->lowerdev; | |
1088 | struct netpoll *netpoll; | |
1089 | int err = 0; | |
1090 | ||
1091 | netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); | |
1092 | err = -ENOMEM; | |
1093 | if (!netpoll) | |
1094 | goto out; | |
1095 | ||
1096 | err = __netpoll_setup(netpoll, real_dev); | |
1097 | if (err) { | |
1098 | kfree(netpoll); | |
1099 | goto out; | |
1100 | } | |
1101 | ||
1102 | vlan->netpoll = netpoll; | |
1103 | ||
1104 | out: | |
1105 | return err; | |
1106 | } | |
1107 | ||
1108 | static void macvlan_dev_netpoll_cleanup(struct net_device *dev) | |
1109 | { | |
1110 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1111 | struct netpoll *netpoll = vlan->netpoll; | |
1112 | ||
1113 | if (!netpoll) | |
1114 | return; | |
1115 | ||
1116 | vlan->netpoll = NULL; | |
1117 | ||
c9fbd71f | 1118 | __netpoll_free(netpoll); |
688cea83 | 1119 | } |
1120 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
1121 | ||
ef5fa6bc ND |
1122 | static int macvlan_dev_get_iflink(const struct net_device *dev) |
1123 | { | |
1124 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1125 | ||
1126 | return vlan->lowerdev->ifindex; | |
1127 | } | |
1128 | ||
b863ceb7 PM |
1129 | static const struct ethtool_ops macvlan_ethtool_ops = { |
1130 | .get_link = ethtool_op_get_link, | |
85f95819 | 1131 | .get_link_ksettings = macvlan_ethtool_get_link_ksettings, |
b863ceb7 | 1132 | .get_drvinfo = macvlan_ethtool_get_drvinfo, |
254c0a2b | 1133 | .get_ts_info = macvlan_ethtool_get_ts_info, |
b863ceb7 PM |
1134 | }; |
1135 | ||
54a30c97 SH |
1136 | static const struct net_device_ops macvlan_netdev_ops = { |
1137 | .ndo_init = macvlan_init, | |
fccaf710 | 1138 | .ndo_uninit = macvlan_uninit, |
54a30c97 SH |
1139 | .ndo_open = macvlan_open, |
1140 | .ndo_stop = macvlan_stop, | |
00829823 | 1141 | .ndo_start_xmit = macvlan_start_xmit, |
54a30c97 | 1142 | .ndo_change_mtu = macvlan_change_mtu, |
254c0a2b | 1143 | .ndo_do_ioctl = macvlan_do_ioctl, |
2be5c767 | 1144 | .ndo_fix_features = macvlan_fix_features, |
54a30c97 SH |
1145 | .ndo_change_rx_flags = macvlan_change_rx_flags, |
1146 | .ndo_set_mac_address = macvlan_set_mac_address, | |
df8ef8f3 | 1147 | .ndo_set_rx_mode = macvlan_set_mac_lists, |
bc66154e | 1148 | .ndo_get_stats64 = macvlan_dev_get_stats64, |
54a30c97 | 1149 | .ndo_validate_addr = eth_validate_addr, |
8d13e670 JF |
1150 | .ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid, |
1151 | .ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid, | |
df8ef8f3 JF |
1152 | .ndo_fdb_add = macvlan_fdb_add, |
1153 | .ndo_fdb_del = macvlan_fdb_del, | |
1154 | .ndo_fdb_dump = ndo_dflt_fdb_dump, | |
688cea83 | 1155 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1156 | .ndo_poll_controller = macvlan_dev_poll_controller, | |
1157 | .ndo_netpoll_setup = macvlan_dev_netpoll_setup, | |
1158 | .ndo_netpoll_cleanup = macvlan_dev_netpoll_cleanup, | |
1159 | #endif | |
ef5fa6bc | 1160 | .ndo_get_iflink = macvlan_dev_get_iflink, |
f56e67b5 | 1161 | .ndo_features_check = passthru_features_check, |
2e8b4ba6 | 1162 | .ndo_change_proto_down = dev_change_proto_down_generic, |
54a30c97 SH |
1163 | }; |
1164 | ||
8a35747a | 1165 | void macvlan_common_setup(struct net_device *dev) |
b863ceb7 PM |
1166 | { |
1167 | ether_setup(dev); | |
1168 | ||
91572088 JW |
1169 | dev->min_mtu = 0; |
1170 | dev->max_mtu = ETH_MAX_MTU; | |
02875878 ED |
1171 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
1172 | netif_keep_dst(dev); | |
87ab7f6f | 1173 | dev->priv_flags |= IFF_UNICAST_FLT; |
54a30c97 | 1174 | dev->netdev_ops = &macvlan_netdev_ops; |
cf124db5 | 1175 | dev->needs_free_netdev = true; |
71740129 | 1176 | dev->header_ops = &macvlan_hard_header_ops; |
b863ceb7 | 1177 | dev->ethtool_ops = &macvlan_ethtool_ops; |
8a35747a HX |
1178 | } |
1179 | EXPORT_SYMBOL_GPL(macvlan_common_setup); | |
1180 | ||
1181 | static void macvlan_setup(struct net_device *dev) | |
1182 | { | |
1183 | macvlan_common_setup(dev); | |
7009212b | 1184 | dev->priv_flags |= IFF_NO_QUEUE; |
b863ceb7 PM |
1185 | } |
1186 | ||
1187 | static int macvlan_port_create(struct net_device *dev) | |
1188 | { | |
1189 | struct macvlan_port *port; | |
1190 | unsigned int i; | |
ab95bfe0 | 1191 | int err; |
b863ceb7 PM |
1192 | |
1193 | if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) | |
1194 | return -EINVAL; | |
1195 | ||
322dc6e0 | 1196 | if (netdev_is_rx_handler_busy(dev)) |
d6b00fec MB |
1197 | return -EBUSY; |
1198 | ||
b863ceb7 PM |
1199 | port = kzalloc(sizeof(*port), GFP_KERNEL); |
1200 | if (port == NULL) | |
1201 | return -ENOMEM; | |
1202 | ||
1203 | port->dev = dev; | |
18c8c54d | 1204 | ether_addr_copy(port->perm_addr, dev->dev_addr); |
b863ceb7 PM |
1205 | INIT_LIST_HEAD(&port->vlans); |
1206 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) | |
1207 | INIT_HLIST_HEAD(&port->vlan_hash[i]); | |
79cf79ab MB |
1208 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) |
1209 | INIT_HLIST_HEAD(&port->vlan_source_hash[i]); | |
ab95bfe0 | 1210 | |
412ca155 HX |
1211 | skb_queue_head_init(&port->bc_queue); |
1212 | INIT_WORK(&port->bc_work, macvlan_process_broadcast); | |
1213 | ||
a35e2c1b JP |
1214 | err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); |
1215 | if (err) | |
ab95bfe0 | 1216 | kfree(port); |
d9351561 ED |
1217 | else |
1218 | dev->priv_flags |= IFF_MACVLAN_PORT; | |
ab95bfe0 | 1219 | return err; |
b863ceb7 PM |
1220 | } |
1221 | ||
1222 | static void macvlan_port_destroy(struct net_device *dev) | |
1223 | { | |
e052f7e6 | 1224 | struct macvlan_port *port = macvlan_port_get_rtnl(dev); |
f6478218 | 1225 | struct sk_buff *skb; |
b863ceb7 | 1226 | |
a35e2c1b | 1227 | dev->priv_flags &= ~IFF_MACVLAN_PORT; |
ab95bfe0 | 1228 | netdev_rx_handler_unregister(dev); |
fe0ca732 ED |
1229 | |
1230 | /* After this point, no packet can schedule bc_work anymore, | |
1231 | * but we need to cancel it and purge left skbs if any. | |
1232 | */ | |
1233 | cancel_work_sync(&port->bc_work); | |
f6478218 HX |
1234 | |
1235 | while ((skb = __skb_dequeue(&port->bc_queue))) { | |
1236 | const struct macvlan_dev *src = MACVLAN_SKB_CB(skb)->src; | |
1237 | ||
1238 | if (src) | |
1239 | dev_put(src->dev); | |
1240 | ||
1241 | kfree_skb(skb); | |
1242 | } | |
fe0ca732 | 1243 | |
18c8c54d VY |
1244 | /* If the lower device address has been changed by passthru |
1245 | * macvlan, put it back. | |
1246 | */ | |
1247 | if (macvlan_passthru(port) && | |
1248 | !ether_addr_equal(port->dev->dev_addr, port->perm_addr)) { | |
1249 | struct sockaddr sa; | |
1250 | ||
1251 | sa.sa_family = port->dev->type; | |
1252 | memcpy(&sa.sa_data, port->perm_addr, port->dev->addr_len); | |
3a37a963 | 1253 | dev_set_mac_address(port->dev, &sa, NULL); |
18c8c54d VY |
1254 | } |
1255 | ||
a1f5315c | 1256 | kfree(port); |
b863ceb7 PM |
1257 | } |
1258 | ||
a8b8a889 MS |
1259 | static int macvlan_validate(struct nlattr *tb[], struct nlattr *data[], |
1260 | struct netlink_ext_ack *extack) | |
b863ceb7 PM |
1261 | { |
1262 | if (tb[IFLA_ADDRESS]) { | |
1263 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
1264 | return -EINVAL; | |
1265 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
1266 | return -EADDRNOTAVAIL; | |
1267 | } | |
27c0b1a8 | 1268 | |
07850a4f ZS |
1269 | if (!data) |
1270 | return 0; | |
1271 | ||
1272 | if (data[IFLA_MACVLAN_FLAGS] && | |
15127478 MT |
1273 | nla_get_u16(data[IFLA_MACVLAN_FLAGS]) & ~MACVLAN_FLAG_NOPROMISC) |
1274 | return -EINVAL; | |
1275 | ||
07850a4f | 1276 | if (data[IFLA_MACVLAN_MODE]) { |
27c0b1a8 AB |
1277 | switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { |
1278 | case MACVLAN_MODE_PRIVATE: | |
1279 | case MACVLAN_MODE_VEPA: | |
1280 | case MACVLAN_MODE_BRIDGE: | |
eb06acdc | 1281 | case MACVLAN_MODE_PASSTHRU: |
79cf79ab MB |
1282 | case MACVLAN_MODE_SOURCE: |
1283 | break; | |
1284 | default: | |
1285 | return -EINVAL; | |
1286 | } | |
1287 | } | |
1288 | ||
07850a4f | 1289 | if (data[IFLA_MACVLAN_MACADDR_MODE]) { |
79cf79ab MB |
1290 | switch (nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE])) { |
1291 | case MACVLAN_MACADDR_ADD: | |
1292 | case MACVLAN_MACADDR_DEL: | |
1293 | case MACVLAN_MACADDR_FLUSH: | |
1294 | case MACVLAN_MACADDR_SET: | |
27c0b1a8 AB |
1295 | break; |
1296 | default: | |
1297 | return -EINVAL; | |
1298 | } | |
1299 | } | |
79cf79ab | 1300 | |
07850a4f | 1301 | if (data[IFLA_MACVLAN_MACADDR]) { |
79cf79ab MB |
1302 | if (nla_len(data[IFLA_MACVLAN_MACADDR]) != ETH_ALEN) |
1303 | return -EINVAL; | |
1304 | ||
1305 | if (!is_valid_ether_addr(nla_data(data[IFLA_MACVLAN_MACADDR]))) | |
1306 | return -EADDRNOTAVAIL; | |
1307 | } | |
1308 | ||
07850a4f | 1309 | if (data[IFLA_MACVLAN_MACADDR_COUNT]) |
79cf79ab MB |
1310 | return -EINVAL; |
1311 | ||
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | /** | |
1316 | * reconfigure list of remote source mac address | |
1317 | * (only for macvlan devices in source mode) | |
1318 | * Note regarding alignment: all netlink data is aligned to 4 Byte, which | |
1319 | * suffices for both ether_addr_copy and ether_addr_equal_64bits usage. | |
1320 | */ | |
1321 | static int macvlan_changelink_sources(struct macvlan_dev *vlan, u32 mode, | |
1322 | struct nlattr *data[]) | |
1323 | { | |
1324 | char *addr = NULL; | |
1325 | int ret, rem, len; | |
1326 | struct nlattr *nla, *head; | |
1327 | struct macvlan_source_entry *entry; | |
1328 | ||
1329 | if (data[IFLA_MACVLAN_MACADDR]) | |
1330 | addr = nla_data(data[IFLA_MACVLAN_MACADDR]); | |
1331 | ||
1332 | if (mode == MACVLAN_MACADDR_ADD) { | |
1333 | if (!addr) | |
1334 | return -EINVAL; | |
1335 | ||
1336 | return macvlan_hash_add_source(vlan, addr); | |
1337 | ||
1338 | } else if (mode == MACVLAN_MACADDR_DEL) { | |
1339 | if (!addr) | |
1340 | return -EINVAL; | |
1341 | ||
1342 | entry = macvlan_hash_lookup_source(vlan, addr); | |
1343 | if (entry) { | |
1344 | macvlan_hash_del_source(entry); | |
1345 | vlan->macaddr_count--; | |
1346 | } | |
1347 | } else if (mode == MACVLAN_MACADDR_FLUSH) { | |
1348 | macvlan_flush_sources(vlan->port, vlan); | |
1349 | } else if (mode == MACVLAN_MACADDR_SET) { | |
1350 | macvlan_flush_sources(vlan->port, vlan); | |
1351 | ||
1352 | if (addr) { | |
1353 | ret = macvlan_hash_add_source(vlan, addr); | |
1354 | if (ret) | |
1355 | return ret; | |
1356 | } | |
1357 | ||
1358 | if (!data || !data[IFLA_MACVLAN_MACADDR_DATA]) | |
1359 | return 0; | |
1360 | ||
1361 | head = nla_data(data[IFLA_MACVLAN_MACADDR_DATA]); | |
1362 | len = nla_len(data[IFLA_MACVLAN_MACADDR_DATA]); | |
1363 | ||
1364 | nla_for_each_attr(nla, head, len, rem) { | |
1365 | if (nla_type(nla) != IFLA_MACVLAN_MACADDR || | |
1366 | nla_len(nla) != ETH_ALEN) | |
1367 | continue; | |
1368 | ||
1369 | addr = nla_data(nla); | |
1370 | ret = macvlan_hash_add_source(vlan, addr); | |
1371 | if (ret) | |
1372 | return ret; | |
1373 | } | |
1374 | } else { | |
1375 | return -EINVAL; | |
1376 | } | |
1377 | ||
b863ceb7 PM |
1378 | return 0; |
1379 | } | |
1380 | ||
fc0663d6 | 1381 | int macvlan_common_newlink(struct net *src_net, struct net_device *dev, |
42ab19ee DA |
1382 | struct nlattr *tb[], struct nlattr *data[], |
1383 | struct netlink_ext_ack *extack) | |
b863ceb7 PM |
1384 | { |
1385 | struct macvlan_dev *vlan = netdev_priv(dev); | |
1386 | struct macvlan_port *port; | |
1387 | struct net_device *lowerdev; | |
1388 | int err; | |
79cf79ab | 1389 | int macmode; |
aa5fd0fb | 1390 | bool create = false; |
b863ceb7 PM |
1391 | |
1392 | if (!tb[IFLA_LINK]) | |
1393 | return -EINVAL; | |
1394 | ||
81adee47 | 1395 | lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); |
b863ceb7 PM |
1396 | if (lowerdev == NULL) |
1397 | return -ENODEV; | |
1398 | ||
d70f2cf5 | 1399 | /* When creating macvlans or macvtaps on top of other macvlans - use |
b0832a29 | 1400 | * the real device as the lowerdev. |
a6ca5f1d | 1401 | */ |
d70f2cf5 KW |
1402 | if (netif_is_macvlan(lowerdev)) |
1403 | lowerdev = macvlan_dev_real_dev(lowerdev); | |
a6ca5f1d | 1404 | |
b863ceb7 PM |
1405 | if (!tb[IFLA_MTU]) |
1406 | dev->mtu = lowerdev->mtu; | |
1407 | else if (dev->mtu > lowerdev->mtu) | |
1408 | return -EINVAL; | |
1409 | ||
91572088 JW |
1410 | /* MTU range: 68 - lowerdev->max_mtu */ |
1411 | dev->min_mtu = ETH_MIN_MTU; | |
1412 | dev->max_mtu = lowerdev->max_mtu; | |
1413 | ||
b863ceb7 | 1414 | if (!tb[IFLA_ADDRESS]) |
7ce5d222 | 1415 | eth_hw_addr_random(dev); |
b863ceb7 | 1416 | |
913564fb | 1417 | if (!netif_is_macvlan_port(lowerdev)) { |
b863ceb7 PM |
1418 | err = macvlan_port_create(lowerdev); |
1419 | if (err < 0) | |
1420 | return err; | |
aa5fd0fb | 1421 | create = true; |
b863ceb7 | 1422 | } |
e052f7e6 | 1423 | port = macvlan_port_get_rtnl(lowerdev); |
b863ceb7 | 1424 | |
eb06acdc | 1425 | /* Only 1 macvlan device can be created in passthru mode */ |
43c2d578 | 1426 | if (macvlan_passthru(port)) { |
aa5fd0fb GF |
1427 | /* The macvlan port must be not created this time, |
1428 | * still goto destroy_macvlan_port for readability. | |
1429 | */ | |
1430 | err = -EINVAL; | |
1431 | goto destroy_macvlan_port; | |
1432 | } | |
eb06acdc | 1433 | |
b863ceb7 PM |
1434 | vlan->lowerdev = lowerdev; |
1435 | vlan->dev = dev; | |
1436 | vlan->port = port; | |
2be5c767 | 1437 | vlan->set_features = MACVLAN_FEATURES; |
b863ceb7 | 1438 | |
27c0b1a8 AB |
1439 | vlan->mode = MACVLAN_MODE_VEPA; |
1440 | if (data && data[IFLA_MACVLAN_MODE]) | |
1441 | vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); | |
1442 | ||
df8ef8f3 JF |
1443 | if (data && data[IFLA_MACVLAN_FLAGS]) |
1444 | vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); | |
1445 | ||
eb06acdc | 1446 | if (vlan->mode == MACVLAN_MODE_PASSTHRU) { |
aa5fd0fb GF |
1447 | if (port->count) { |
1448 | err = -EINVAL; | |
1449 | goto destroy_macvlan_port; | |
1450 | } | |
43c2d578 | 1451 | macvlan_set_passthru(port); |
8b98604e | 1452 | eth_hw_addr_inherit(dev, lowerdev); |
eb06acdc SS |
1453 | } |
1454 | ||
79cf79ab | 1455 | if (data && data[IFLA_MACVLAN_MACADDR_MODE]) { |
aa5fd0fb GF |
1456 | if (vlan->mode != MACVLAN_MODE_SOURCE) { |
1457 | err = -EINVAL; | |
1458 | goto destroy_macvlan_port; | |
1459 | } | |
79cf79ab MB |
1460 | macmode = nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE]); |
1461 | err = macvlan_changelink_sources(vlan, macmode, data); | |
1462 | if (err) | |
aa5fd0fb | 1463 | goto destroy_macvlan_port; |
79cf79ab MB |
1464 | } |
1465 | ||
47d4ab91 JF |
1466 | err = register_netdevice(dev); |
1467 | if (err < 0) | |
aa5fd0fb | 1468 | goto destroy_macvlan_port; |
47d4ab91 | 1469 | |
a6cc0cfa | 1470 | dev->priv_flags |= IFF_MACVLAN; |
42ab19ee | 1471 | err = netdev_upper_dev_link(lowerdev, dev, extack); |
7cd43db7 | 1472 | if (err) |
da37705c | 1473 | goto unregister_netdev; |
b863ceb7 | 1474 | |
233c7df0 | 1475 | list_add_tail_rcu(&vlan->list, &port->vlans); |
fc4a7489 | 1476 | netif_stacked_transfer_operstate(lowerdev, dev); |
de7d244d | 1477 | linkwatch_fire_event(dev); |
f16d3d57 | 1478 | |
b863ceb7 | 1479 | return 0; |
f16d3d57 | 1480 | |
da37705c | 1481 | unregister_netdev: |
d02fd6e7 | 1482 | /* macvlan_uninit would free the macvlan port */ |
da37705c | 1483 | unregister_netdevice(dev); |
d02fd6e7 | 1484 | return err; |
aa5fd0fb | 1485 | destroy_macvlan_port: |
d02fd6e7 GF |
1486 | /* the macvlan port may be freed by macvlan_uninit when fail to register. |
1487 | * so we destroy the macvlan port only when it's valid. | |
1488 | */ | |
4e14bf42 | 1489 | if (create && macvlan_port_get_rtnl(lowerdev)) |
aa5fd0fb | 1490 | macvlan_port_destroy(port->dev); |
f16d3d57 | 1491 | return err; |
b863ceb7 | 1492 | } |
fc0663d6 | 1493 | EXPORT_SYMBOL_GPL(macvlan_common_newlink); |
b863ceb7 | 1494 | |
fc0663d6 | 1495 | static int macvlan_newlink(struct net *src_net, struct net_device *dev, |
7a3f4a18 MS |
1496 | struct nlattr *tb[], struct nlattr *data[], |
1497 | struct netlink_ext_ack *extack) | |
fc0663d6 | 1498 | { |
42ab19ee | 1499 | return macvlan_common_newlink(src_net, dev, tb, data, extack); |
fc0663d6 AB |
1500 | } |
1501 | ||
1502 | void macvlan_dellink(struct net_device *dev, struct list_head *head) | |
b863ceb7 PM |
1503 | { |
1504 | struct macvlan_dev *vlan = netdev_priv(dev); | |
b863ceb7 | 1505 | |
79cf79ab MB |
1506 | if (vlan->mode == MACVLAN_MODE_SOURCE) |
1507 | macvlan_flush_sources(vlan->port, vlan); | |
233c7df0 | 1508 | list_del_rcu(&vlan->list); |
23289a37 | 1509 | unregister_netdevice_queue(dev, head); |
7cd43db7 | 1510 | netdev_upper_dev_unlink(vlan->lowerdev, dev); |
b863ceb7 | 1511 | } |
fc0663d6 | 1512 | EXPORT_SYMBOL_GPL(macvlan_dellink); |
b863ceb7 | 1513 | |
27c0b1a8 | 1514 | static int macvlan_changelink(struct net_device *dev, |
ad744b22 MS |
1515 | struct nlattr *tb[], struct nlattr *data[], |
1516 | struct netlink_ext_ack *extack) | |
27c0b1a8 AB |
1517 | { |
1518 | struct macvlan_dev *vlan = netdev_priv(dev); | |
266e8347 MT |
1519 | enum macvlan_mode mode; |
1520 | bool set_mode = false; | |
79cf79ab MB |
1521 | enum macvlan_macaddr_mode macmode; |
1522 | int ret; | |
266e8347 MT |
1523 | |
1524 | /* Validate mode, but don't set yet: setting flags may fail. */ | |
1525 | if (data && data[IFLA_MACVLAN_MODE]) { | |
1526 | set_mode = true; | |
1527 | mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); | |
1528 | /* Passthrough mode can't be set or cleared dynamically */ | |
1529 | if ((mode == MACVLAN_MODE_PASSTHRU) != | |
1530 | (vlan->mode == MACVLAN_MODE_PASSTHRU)) | |
1531 | return -EINVAL; | |
79cf79ab MB |
1532 | if (vlan->mode == MACVLAN_MODE_SOURCE && |
1533 | vlan->mode != mode) | |
1534 | macvlan_flush_sources(vlan->port, vlan); | |
266e8347 | 1535 | } |
99ffc3e7 | 1536 | |
df8ef8f3 JF |
1537 | if (data && data[IFLA_MACVLAN_FLAGS]) { |
1538 | __u16 flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); | |
1539 | bool promisc = (flags ^ vlan->flags) & MACVLAN_FLAG_NOPROMISC; | |
43c2d578 | 1540 | if (macvlan_passthru(vlan->port) && promisc) { |
99ffc3e7 MT |
1541 | int err; |
1542 | ||
1543 | if (flags & MACVLAN_FLAG_NOPROMISC) | |
1544 | err = dev_set_promiscuity(vlan->lowerdev, -1); | |
1545 | else | |
1546 | err = dev_set_promiscuity(vlan->lowerdev, 1); | |
1547 | if (err < 0) | |
1548 | return err; | |
1549 | } | |
df8ef8f3 JF |
1550 | vlan->flags = flags; |
1551 | } | |
266e8347 MT |
1552 | if (set_mode) |
1553 | vlan->mode = mode; | |
79cf79ab MB |
1554 | if (data && data[IFLA_MACVLAN_MACADDR_MODE]) { |
1555 | if (vlan->mode != MACVLAN_MODE_SOURCE) | |
1556 | return -EINVAL; | |
1557 | macmode = nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE]); | |
1558 | ret = macvlan_changelink_sources(vlan, macmode, data); | |
1559 | if (ret) | |
1560 | return ret; | |
1561 | } | |
27c0b1a8 AB |
1562 | return 0; |
1563 | } | |
1564 | ||
79cf79ab MB |
1565 | static size_t macvlan_get_size_mac(const struct macvlan_dev *vlan) |
1566 | { | |
1567 | if (vlan->macaddr_count == 0) | |
1568 | return 0; | |
1569 | return nla_total_size(0) /* IFLA_MACVLAN_MACADDR_DATA */ | |
1570 | + vlan->macaddr_count * nla_total_size(sizeof(u8) * ETH_ALEN); | |
1571 | } | |
1572 | ||
27c0b1a8 AB |
1573 | static size_t macvlan_get_size(const struct net_device *dev) |
1574 | { | |
79cf79ab MB |
1575 | struct macvlan_dev *vlan = netdev_priv(dev); |
1576 | ||
01fe944f ED |
1577 | return (0 |
1578 | + nla_total_size(4) /* IFLA_MACVLAN_MODE */ | |
1579 | + nla_total_size(2) /* IFLA_MACVLAN_FLAGS */ | |
79cf79ab MB |
1580 | + nla_total_size(4) /* IFLA_MACVLAN_MACADDR_COUNT */ |
1581 | + macvlan_get_size_mac(vlan) /* IFLA_MACVLAN_MACADDR */ | |
01fe944f | 1582 | ); |
27c0b1a8 AB |
1583 | } |
1584 | ||
79cf79ab MB |
1585 | static int macvlan_fill_info_macaddr(struct sk_buff *skb, |
1586 | const struct macvlan_dev *vlan, | |
1587 | const int i) | |
1588 | { | |
1589 | struct hlist_head *h = &vlan->port->vlan_source_hash[i]; | |
1590 | struct macvlan_source_entry *entry; | |
1591 | ||
1592 | hlist_for_each_entry_rcu(entry, h, hlist) { | |
1593 | if (entry->vlan != vlan) | |
1594 | continue; | |
1595 | if (nla_put(skb, IFLA_MACVLAN_MACADDR, ETH_ALEN, entry->addr)) | |
1596 | return 1; | |
1597 | } | |
1598 | return 0; | |
1599 | } | |
1600 | ||
27c0b1a8 AB |
1601 | static int macvlan_fill_info(struct sk_buff *skb, |
1602 | const struct net_device *dev) | |
1603 | { | |
1604 | struct macvlan_dev *vlan = netdev_priv(dev); | |
79cf79ab MB |
1605 | int i; |
1606 | struct nlattr *nest; | |
27c0b1a8 | 1607 | |
ead9a76c DM |
1608 | if (nla_put_u32(skb, IFLA_MACVLAN_MODE, vlan->mode)) |
1609 | goto nla_put_failure; | |
df8ef8f3 JF |
1610 | if (nla_put_u16(skb, IFLA_MACVLAN_FLAGS, vlan->flags)) |
1611 | goto nla_put_failure; | |
79cf79ab MB |
1612 | if (nla_put_u32(skb, IFLA_MACVLAN_MACADDR_COUNT, vlan->macaddr_count)) |
1613 | goto nla_put_failure; | |
1614 | if (vlan->macaddr_count > 0) { | |
ae0be8de | 1615 | nest = nla_nest_start_noflag(skb, IFLA_MACVLAN_MACADDR_DATA); |
79cf79ab MB |
1616 | if (nest == NULL) |
1617 | goto nla_put_failure; | |
1618 | ||
1619 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) { | |
1620 | if (macvlan_fill_info_macaddr(skb, vlan, i)) | |
1621 | goto nla_put_failure; | |
1622 | } | |
1623 | nla_nest_end(skb, nest); | |
1624 | } | |
27c0b1a8 AB |
1625 | return 0; |
1626 | ||
1627 | nla_put_failure: | |
1628 | return -EMSGSIZE; | |
1629 | } | |
1630 | ||
1631 | static const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { | |
df8ef8f3 JF |
1632 | [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, |
1633 | [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 }, | |
79cf79ab MB |
1634 | [IFLA_MACVLAN_MACADDR_MODE] = { .type = NLA_U32 }, |
1635 | [IFLA_MACVLAN_MACADDR] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
1636 | [IFLA_MACVLAN_MACADDR_DATA] = { .type = NLA_NESTED }, | |
1637 | [IFLA_MACVLAN_MACADDR_COUNT] = { .type = NLA_U32 }, | |
27c0b1a8 AB |
1638 | }; |
1639 | ||
fc0663d6 AB |
1640 | int macvlan_link_register(struct rtnl_link_ops *ops) |
1641 | { | |
1642 | /* common fields */ | |
fc0663d6 AB |
1643 | ops->validate = macvlan_validate; |
1644 | ops->maxtype = IFLA_MACVLAN_MAX; | |
1645 | ops->policy = macvlan_policy; | |
1646 | ops->changelink = macvlan_changelink; | |
1647 | ops->get_size = macvlan_get_size; | |
1648 | ops->fill_info = macvlan_fill_info; | |
1649 | ||
1650 | return rtnl_link_register(ops); | |
1651 | }; | |
1652 | EXPORT_SYMBOL_GPL(macvlan_link_register); | |
1653 | ||
eaca400f ND |
1654 | static struct net *macvlan_get_link_net(const struct net_device *dev) |
1655 | { | |
1656 | return dev_net(macvlan_dev_real_dev(dev)); | |
1657 | } | |
1658 | ||
fc0663d6 | 1659 | static struct rtnl_link_ops macvlan_link_ops = { |
b863ceb7 | 1660 | .kind = "macvlan", |
8a35747a | 1661 | .setup = macvlan_setup, |
b863ceb7 PM |
1662 | .newlink = macvlan_newlink, |
1663 | .dellink = macvlan_dellink, | |
eaca400f | 1664 | .get_link_net = macvlan_get_link_net, |
6fe3faf8 | 1665 | .priv_size = sizeof(struct macvlan_dev), |
b863ceb7 PM |
1666 | }; |
1667 | ||
1668 | static int macvlan_device_event(struct notifier_block *unused, | |
1669 | unsigned long event, void *ptr) | |
1670 | { | |
351638e7 | 1671 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
b863ceb7 PM |
1672 | struct macvlan_dev *vlan, *next; |
1673 | struct macvlan_port *port; | |
226bd341 | 1674 | LIST_HEAD(list_kill); |
b863ceb7 | 1675 | |
913564fb | 1676 | if (!netif_is_macvlan_port(dev)) |
b863ceb7 PM |
1677 | return NOTIFY_DONE; |
1678 | ||
e052f7e6 | 1679 | port = macvlan_port_get_rtnl(dev); |
a35e2c1b | 1680 | |
b863ceb7 | 1681 | switch (event) { |
de7d244d | 1682 | case NETDEV_UP: |
80fd2d6c | 1683 | case NETDEV_DOWN: |
b863ceb7 PM |
1684 | case NETDEV_CHANGE: |
1685 | list_for_each_entry(vlan, &port->vlans, list) | |
fc4a7489 PM |
1686 | netif_stacked_transfer_operstate(vlan->lowerdev, |
1687 | vlan->dev); | |
b863ceb7 PM |
1688 | break; |
1689 | case NETDEV_FEAT_CHANGE: | |
1690 | list_for_each_entry(vlan, &port->vlans, list) { | |
8c2acc53 | 1691 | vlan->dev->gso_max_size = dev->gso_max_size; |
f6773c5e | 1692 | vlan->dev->gso_max_segs = dev->gso_max_segs; |
797f87f8 | 1693 | netdev_update_features(vlan->dev); |
b863ceb7 PM |
1694 | } |
1695 | break; | |
3763e7ef | 1696 | case NETDEV_CHANGEMTU: |
1697 | list_for_each_entry(vlan, &port->vlans, list) { | |
1698 | if (vlan->dev->mtu <= dev->mtu) | |
1699 | continue; | |
1700 | dev_set_mtu(vlan->dev, dev->mtu); | |
1701 | } | |
e289fd28 | 1702 | break; |
1703 | case NETDEV_CHANGEADDR: | |
43c2d578 | 1704 | if (!macvlan_passthru(port)) |
e289fd28 | 1705 | return NOTIFY_DONE; |
1706 | ||
1707 | vlan = list_first_entry_or_null(&port->vlans, | |
1708 | struct macvlan_dev, | |
1709 | list); | |
1710 | ||
cdd7eaea | 1711 | if (vlan && macvlan_sync_address(vlan->dev, dev->dev_addr)) |
e289fd28 | 1712 | return NOTIFY_BAD; |
1713 | ||
3763e7ef | 1714 | break; |
b863ceb7 | 1715 | case NETDEV_UNREGISTER: |
3b27e105 DL |
1716 | /* twiddle thumbs on netns device moves */ |
1717 | if (dev->reg_state != NETREG_UNREGISTERING) | |
1718 | break; | |
1719 | ||
b863ceb7 | 1720 | list_for_each_entry_safe(vlan, next, &port->vlans, list) |
226bd341 ED |
1721 | vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); |
1722 | unregister_netdevice_many(&list_kill); | |
b863ceb7 | 1723 | break; |
1c01fe14 JP |
1724 | case NETDEV_PRE_TYPE_CHANGE: |
1725 | /* Forbid underlaying device to change its type. */ | |
1726 | return NOTIFY_BAD; | |
4c991255 VY |
1727 | |
1728 | case NETDEV_NOTIFY_PEERS: | |
1729 | case NETDEV_BONDING_FAILOVER: | |
1730 | case NETDEV_RESEND_IGMP: | |
1731 | /* Propagate to all vlans */ | |
1732 | list_for_each_entry(vlan, &port->vlans, list) | |
1733 | call_netdevice_notifiers(event, vlan->dev); | |
b863ceb7 PM |
1734 | } |
1735 | return NOTIFY_DONE; | |
1736 | } | |
1737 | ||
1738 | static struct notifier_block macvlan_notifier_block __read_mostly = { | |
1739 | .notifier_call = macvlan_device_event, | |
1740 | }; | |
1741 | ||
1742 | static int __init macvlan_init_module(void) | |
1743 | { | |
1744 | int err; | |
1745 | ||
1746 | register_netdevice_notifier(&macvlan_notifier_block); | |
b863ceb7 | 1747 | |
fc0663d6 | 1748 | err = macvlan_link_register(&macvlan_link_ops); |
b863ceb7 PM |
1749 | if (err < 0) |
1750 | goto err1; | |
1751 | return 0; | |
1752 | err1: | |
b863ceb7 PM |
1753 | unregister_netdevice_notifier(&macvlan_notifier_block); |
1754 | return err; | |
1755 | } | |
1756 | ||
1757 | static void __exit macvlan_cleanup_module(void) | |
1758 | { | |
1759 | rtnl_link_unregister(&macvlan_link_ops); | |
b863ceb7 PM |
1760 | unregister_netdevice_notifier(&macvlan_notifier_block); |
1761 | } | |
1762 | ||
1763 | module_init(macvlan_init_module); | |
1764 | module_exit(macvlan_cleanup_module); | |
1765 | ||
1766 | MODULE_LICENSE("GPL"); | |
1767 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); | |
1768 | MODULE_DESCRIPTION("Driver for MAC address based VLANs"); | |
1769 | MODULE_ALIAS_RTNL_LINK("macvlan"); |