1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* -*- linux-c -*- |
3 | * INET 802.1Q VLAN |
4 | * Ethernet-type device handling. |
5 | * |
6 | * Authors: Ben Greear <greearb@candelatech.com> |
7 | * Please send support related email to: netdev@vger.kernel.org |
8 | * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html |
9 | * |
10 | * Fixes: Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com> |
11 | * - reset skb->pkt_type on incoming packets when MAC was changed |
12 | * - see that changed MAC is saddr for outgoing packets |
13 | * Oct 20, 2001: Ard van Breeman: |
14 | * - Fix MC-list, finally. |
15 | * - Flush MC-list on VLAN destroy. |
16 | */ |
17 | |
18 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
19 | |
20 | #include <linux/module.h> |
21 | #include <linux/slab.h> |
22 | #include <linux/skbuff.h> |
23 | #include <linux/netdevice.h> |
24 | #include <linux/net_tstamp.h> |
25 | #include <linux/etherdevice.h> |
26 | #include <linux/ethtool.h> |
27 | #include <linux/phy.h> |
28 | #include <net/arp.h> |
29 | #include <net/macsec.h> |
30 | |
31 | #include "vlan.h" |
32 | #include "vlanproc.h" |
33 | #include <linux/if_vlan.h> |
34 | #include <linux/netpoll.h> |
35 | |
36 | /* |
37 | * Create the VLAN header for an arbitrary protocol layer |
38 | * |
39 | * saddr=NULL means use device source address |
40 | * daddr=NULL means leave destination address (eg unresolved arp) |
41 | * |
42 | * This is called when the SKB is moving down the stack towards the |
43 | * physical devices. |
44 | */ |
45 | static int (struct sk_buff *skb, struct net_device *dev, |
46 | unsigned short type, |
47 | const void *daddr, const void *saddr, |
48 | unsigned int len) |
49 | { |
50 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
51 | struct vlan_hdr *vhdr; |
52 | unsigned int vhdrlen = 0; |
53 | u16 vlan_tci = 0; |
54 | int rc; |
55 | |
56 | if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) { |
57 | vhdr = skb_push(skb, VLAN_HLEN); |
58 | |
59 | vlan_tci = vlan->vlan_id; |
60 | vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skprio: skb->priority); |
61 | vhdr->h_vlan_TCI = htons(vlan_tci); |
62 | |
63 | /* |
64 | * Set the protocol type. For a packet of type ETH_P_802_3/2 we |
65 | * put the length in here instead. |
66 | */ |
67 | if (type != ETH_P_802_3 && type != ETH_P_802_2) |
68 | vhdr->h_vlan_encapsulated_proto = htons(type); |
69 | else |
70 | vhdr->h_vlan_encapsulated_proto = htons(len); |
71 | |
72 | skb->protocol = vlan->vlan_proto; |
73 | type = ntohs(vlan->vlan_proto); |
74 | vhdrlen = VLAN_HLEN; |
75 | } |
76 | |
77 | /* Before delegating work to the lower layer, enter our MAC-address */ |
78 | if (saddr == NULL) |
79 | saddr = dev->dev_addr; |
80 | |
81 | /* Now make the underlying real hard header */ |
82 | dev = vlan->real_dev; |
83 | rc = dev_hard_header(skb, dev, type, daddr, saddr, len: len + vhdrlen); |
84 | if (rc > 0) |
85 | rc += vhdrlen; |
86 | return rc; |
87 | } |
88 | |
89 | static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb) |
90 | { |
91 | #ifdef CONFIG_NET_POLL_CONTROLLER |
92 | return netpoll_send_skb(np: vlan->netpoll, skb); |
93 | #else |
94 | BUG(); |
95 | return NETDEV_TX_OK; |
96 | #endif |
97 | } |
98 | |
99 | static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, |
100 | struct net_device *dev) |
101 | { |
102 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
103 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); |
104 | unsigned int len; |
105 | int ret; |
106 | |
107 | /* Handle non-VLAN frames if they are sent to us, for example by DHCP. |
108 | * |
109 | * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING |
110 | * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... |
111 | */ |
112 | if (vlan->flags & VLAN_FLAG_REORDER_HDR || |
113 | veth->h_vlan_proto != vlan->vlan_proto) { |
114 | u16 vlan_tci; |
115 | vlan_tci = vlan->vlan_id; |
116 | vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skprio: skb->priority); |
117 | __vlan_hwaccel_put_tag(skb, vlan_proto: vlan->vlan_proto, vlan_tci); |
118 | } |
119 | |
120 | skb->dev = vlan->real_dev; |
121 | len = skb->len; |
122 | if (unlikely(netpoll_tx_running(dev))) |
123 | return vlan_netpoll_send_skb(vlan, skb); |
124 | |
125 | ret = dev_queue_xmit(skb); |
126 | |
127 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
128 | struct vlan_pcpu_stats *stats; |
129 | |
130 | stats = this_cpu_ptr(vlan->vlan_pcpu_stats); |
131 | u64_stats_update_begin(syncp: &stats->syncp); |
132 | u64_stats_inc(p: &stats->tx_packets); |
133 | u64_stats_add(p: &stats->tx_bytes, val: len); |
134 | u64_stats_update_end(syncp: &stats->syncp); |
135 | } else { |
136 | this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped); |
137 | } |
138 | |
139 | return ret; |
140 | } |
141 | |
142 | static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) |
143 | { |
144 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
145 | unsigned int max_mtu = real_dev->mtu; |
146 | |
147 | if (netif_reduces_vlan_mtu(dev: real_dev)) |
148 | max_mtu -= VLAN_HLEN; |
149 | if (max_mtu < new_mtu) |
150 | return -ERANGE; |
151 | |
152 | dev->mtu = new_mtu; |
153 | |
154 | return 0; |
155 | } |
156 | |
157 | void vlan_dev_set_ingress_priority(const struct net_device *dev, |
158 | u32 skb_prio, u16 vlan_prio) |
159 | { |
160 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
161 | |
162 | if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) |
163 | vlan->nr_ingress_mappings--; |
164 | else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) |
165 | vlan->nr_ingress_mappings++; |
166 | |
167 | vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; |
168 | } |
169 | |
170 | int vlan_dev_set_egress_priority(const struct net_device *dev, |
171 | u32 skb_prio, u16 vlan_prio) |
172 | { |
173 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
174 | struct vlan_priority_tci_mapping *mp = NULL; |
175 | struct vlan_priority_tci_mapping *np; |
176 | u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; |
177 | |
178 | /* See if a priority mapping exists.. */ |
179 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
180 | while (mp) { |
181 | if (mp->priority == skb_prio) { |
182 | if (mp->vlan_qos && !vlan_qos) |
183 | vlan->nr_egress_mappings--; |
184 | else if (!mp->vlan_qos && vlan_qos) |
185 | vlan->nr_egress_mappings++; |
186 | mp->vlan_qos = vlan_qos; |
187 | return 0; |
188 | } |
189 | mp = mp->next; |
190 | } |
191 | |
192 | /* Create a new mapping then. */ |
193 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
194 | np = kmalloc(size: sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); |
195 | if (!np) |
196 | return -ENOBUFS; |
197 | |
198 | np->next = mp; |
199 | np->priority = skb_prio; |
200 | np->vlan_qos = vlan_qos; |
201 | /* Before inserting this element in hash table, make sure all its fields |
202 | * are committed to memory. |
203 | * coupled with smp_rmb() in vlan_dev_get_egress_qos_mask() |
204 | */ |
205 | smp_wmb(); |
206 | vlan->egress_priority_map[skb_prio & 0xF] = np; |
207 | if (vlan_qos) |
208 | vlan->nr_egress_mappings++; |
209 | return 0; |
210 | } |
211 | |
212 | /* Flags are defined in the vlan_flags enum in |
213 | * include/uapi/linux/if_vlan.h file. |
214 | */ |
215 | int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) |
216 | { |
217 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
218 | u32 old_flags = vlan->flags; |
219 | |
220 | if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | |
221 | VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP | |
222 | VLAN_FLAG_BRIDGE_BINDING)) |
223 | return -EINVAL; |
224 | |
225 | vlan->flags = (old_flags & ~mask) | (flags & mask); |
226 | |
227 | if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { |
228 | if (vlan->flags & VLAN_FLAG_GVRP) |
229 | vlan_gvrp_request_join(dev); |
230 | else |
231 | vlan_gvrp_request_leave(dev); |
232 | } |
233 | |
234 | if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) { |
235 | if (vlan->flags & VLAN_FLAG_MVRP) |
236 | vlan_mvrp_request_join(dev); |
237 | else |
238 | vlan_mvrp_request_leave(dev); |
239 | } |
240 | return 0; |
241 | } |
242 | |
243 | void vlan_dev_get_realdev_name(const struct net_device *dev, char *result, size_t size) |
244 | { |
245 | strscpy_pad(dest: result, src: vlan_dev_priv(dev)->real_dev->name, count: size); |
246 | } |
247 | |
248 | bool vlan_dev_inherit_address(struct net_device *dev, |
249 | struct net_device *real_dev) |
250 | { |
251 | if (dev->addr_assign_type != NET_ADDR_STOLEN) |
252 | return false; |
253 | |
254 | eth_hw_addr_set(dev, addr: real_dev->dev_addr); |
255 | call_netdevice_notifiers(val: NETDEV_CHANGEADDR, dev); |
256 | return true; |
257 | } |
258 | |
259 | static int vlan_dev_open(struct net_device *dev) |
260 | { |
261 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
262 | struct net_device *real_dev = vlan->real_dev; |
263 | int err; |
264 | |
265 | if (!(real_dev->flags & IFF_UP) && |
266 | !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) |
267 | return -ENETDOWN; |
268 | |
269 | if (!ether_addr_equal(addr1: dev->dev_addr, addr2: real_dev->dev_addr) && |
270 | !vlan_dev_inherit_address(dev, real_dev)) { |
271 | err = dev_uc_add(dev: real_dev, addr: dev->dev_addr); |
272 | if (err < 0) |
273 | goto out; |
274 | } |
275 | |
276 | if (dev->flags & IFF_ALLMULTI) { |
277 | err = dev_set_allmulti(dev: real_dev, inc: 1); |
278 | if (err < 0) |
279 | goto del_unicast; |
280 | } |
281 | if (dev->flags & IFF_PROMISC) { |
282 | err = dev_set_promiscuity(dev: real_dev, inc: 1); |
283 | if (err < 0) |
284 | goto clear_allmulti; |
285 | } |
286 | |
287 | ether_addr_copy(dst: vlan->real_dev_addr, src: real_dev->dev_addr); |
288 | |
289 | if (vlan->flags & VLAN_FLAG_GVRP) |
290 | vlan_gvrp_request_join(dev); |
291 | |
292 | if (vlan->flags & VLAN_FLAG_MVRP) |
293 | vlan_mvrp_request_join(dev); |
294 | |
295 | if (netif_carrier_ok(dev: real_dev) && |
296 | !(vlan->flags & VLAN_FLAG_BRIDGE_BINDING)) |
297 | netif_carrier_on(dev); |
298 | return 0; |
299 | |
300 | clear_allmulti: |
301 | if (dev->flags & IFF_ALLMULTI) |
302 | dev_set_allmulti(dev: real_dev, inc: -1); |
303 | del_unicast: |
304 | if (!ether_addr_equal(addr1: dev->dev_addr, addr2: real_dev->dev_addr)) |
305 | dev_uc_del(dev: real_dev, addr: dev->dev_addr); |
306 | out: |
307 | netif_carrier_off(dev); |
308 | return err; |
309 | } |
310 | |
311 | static int vlan_dev_stop(struct net_device *dev) |
312 | { |
313 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
314 | struct net_device *real_dev = vlan->real_dev; |
315 | |
316 | dev_mc_unsync(to: real_dev, from: dev); |
317 | dev_uc_unsync(to: real_dev, from: dev); |
318 | if (dev->flags & IFF_ALLMULTI) |
319 | dev_set_allmulti(dev: real_dev, inc: -1); |
320 | if (dev->flags & IFF_PROMISC) |
321 | dev_set_promiscuity(dev: real_dev, inc: -1); |
322 | |
323 | if (!ether_addr_equal(addr1: dev->dev_addr, addr2: real_dev->dev_addr)) |
324 | dev_uc_del(dev: real_dev, addr: dev->dev_addr); |
325 | |
326 | if (!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING)) |
327 | netif_carrier_off(dev); |
328 | return 0; |
329 | } |
330 | |
331 | static int vlan_dev_set_mac_address(struct net_device *dev, void *p) |
332 | { |
333 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
334 | struct sockaddr *addr = p; |
335 | int err; |
336 | |
337 | if (!is_valid_ether_addr(addr: addr->sa_data)) |
338 | return -EADDRNOTAVAIL; |
339 | |
340 | if (!(dev->flags & IFF_UP)) |
341 | goto out; |
342 | |
343 | if (!ether_addr_equal(addr1: addr->sa_data, addr2: real_dev->dev_addr)) { |
344 | err = dev_uc_add(dev: real_dev, addr: addr->sa_data); |
345 | if (err < 0) |
346 | return err; |
347 | } |
348 | |
349 | if (!ether_addr_equal(addr1: dev->dev_addr, addr2: real_dev->dev_addr)) |
350 | dev_uc_del(dev: real_dev, addr: dev->dev_addr); |
351 | |
352 | out: |
353 | eth_hw_addr_set(dev, addr: addr->sa_data); |
354 | return 0; |
355 | } |
356 | |
357 | static int vlan_hwtstamp_get(struct net_device *dev, |
358 | struct kernel_hwtstamp_config *cfg) |
359 | { |
360 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
361 | |
362 | return generic_hwtstamp_get_lower(dev: real_dev, kernel_cfg: cfg); |
363 | } |
364 | |
365 | static int vlan_hwtstamp_set(struct net_device *dev, |
366 | struct kernel_hwtstamp_config *cfg, |
367 | struct netlink_ext_ack *extack) |
368 | { |
369 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
370 | |
371 | if (!net_eq(net1: dev_net(dev), net2: dev_net(dev: real_dev))) |
372 | return -EOPNOTSUPP; |
373 | |
374 | return generic_hwtstamp_set_lower(dev: real_dev, kernel_cfg: cfg, extack); |
375 | } |
376 | |
377 | static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
378 | { |
379 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
380 | const struct net_device_ops *ops = real_dev->netdev_ops; |
381 | struct ifreq ifrr; |
382 | int err = -EOPNOTSUPP; |
383 | |
384 | strscpy_pad(dest: ifrr.ifr_name, src: real_dev->name, IFNAMSIZ); |
385 | ifrr.ifr_ifru = ifr->ifr_ifru; |
386 | |
387 | switch (cmd) { |
388 | case SIOCGMIIPHY: |
389 | case SIOCGMIIREG: |
390 | case SIOCSMIIREG: |
391 | if (netif_device_present(dev: real_dev) && ops->ndo_eth_ioctl) |
392 | err = ops->ndo_eth_ioctl(real_dev, &ifrr, cmd); |
393 | break; |
394 | } |
395 | |
396 | if (!err) |
397 | ifr->ifr_ifru = ifrr.ifr_ifru; |
398 | |
399 | return err; |
400 | } |
401 | |
402 | static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) |
403 | { |
404 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
405 | const struct net_device_ops *ops = real_dev->netdev_ops; |
406 | int err = 0; |
407 | |
408 | if (netif_device_present(dev: real_dev) && ops->ndo_neigh_setup) |
409 | err = ops->ndo_neigh_setup(real_dev, pa); |
410 | |
411 | return err; |
412 | } |
413 | |
414 | #if IS_ENABLED(CONFIG_FCOE) |
415 | static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, |
416 | struct scatterlist *sgl, unsigned int sgc) |
417 | { |
418 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
419 | const struct net_device_ops *ops = real_dev->netdev_ops; |
420 | int rc = 0; |
421 | |
422 | if (ops->ndo_fcoe_ddp_setup) |
423 | rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); |
424 | |
425 | return rc; |
426 | } |
427 | |
428 | static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) |
429 | { |
430 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
431 | const struct net_device_ops *ops = real_dev->netdev_ops; |
432 | int len = 0; |
433 | |
434 | if (ops->ndo_fcoe_ddp_done) |
435 | len = ops->ndo_fcoe_ddp_done(real_dev, xid); |
436 | |
437 | return len; |
438 | } |
439 | |
440 | static int vlan_dev_fcoe_enable(struct net_device *dev) |
441 | { |
442 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
443 | const struct net_device_ops *ops = real_dev->netdev_ops; |
444 | int rc = -EINVAL; |
445 | |
446 | if (ops->ndo_fcoe_enable) |
447 | rc = ops->ndo_fcoe_enable(real_dev); |
448 | return rc; |
449 | } |
450 | |
451 | static int vlan_dev_fcoe_disable(struct net_device *dev) |
452 | { |
453 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
454 | const struct net_device_ops *ops = real_dev->netdev_ops; |
455 | int rc = -EINVAL; |
456 | |
457 | if (ops->ndo_fcoe_disable) |
458 | rc = ops->ndo_fcoe_disable(real_dev); |
459 | return rc; |
460 | } |
461 | |
462 | static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, |
463 | struct scatterlist *sgl, unsigned int sgc) |
464 | { |
465 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
466 | const struct net_device_ops *ops = real_dev->netdev_ops; |
467 | int rc = 0; |
468 | |
469 | if (ops->ndo_fcoe_ddp_target) |
470 | rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); |
471 | |
472 | return rc; |
473 | } |
474 | #endif |
475 | |
476 | #ifdef NETDEV_FCOE_WWNN |
477 | static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) |
478 | { |
479 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
480 | const struct net_device_ops *ops = real_dev->netdev_ops; |
481 | int rc = -EINVAL; |
482 | |
483 | if (ops->ndo_fcoe_get_wwn) |
484 | rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); |
485 | return rc; |
486 | } |
487 | #endif |
488 | |
489 | static void vlan_dev_change_rx_flags(struct net_device *dev, int change) |
490 | { |
491 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
492 | |
493 | if (dev->flags & IFF_UP) { |
494 | if (change & IFF_ALLMULTI) |
495 | dev_set_allmulti(dev: real_dev, inc: dev->flags & IFF_ALLMULTI ? 1 : -1); |
496 | if (change & IFF_PROMISC) |
497 | dev_set_promiscuity(dev: real_dev, inc: dev->flags & IFF_PROMISC ? 1 : -1); |
498 | } |
499 | } |
500 | |
501 | static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) |
502 | { |
503 | dev_mc_sync(to: vlan_dev_priv(dev: vlan_dev)->real_dev, from: vlan_dev); |
504 | dev_uc_sync(to: vlan_dev_priv(dev: vlan_dev)->real_dev, from: vlan_dev); |
505 | } |
506 | |
507 | /* |
508 | * vlan network devices have devices nesting below it, and are a special |
509 | * "super class" of normal network devices; split their locks off into a |
510 | * separate class since they always nest. |
511 | */ |
512 | static struct lock_class_key vlan_netdev_xmit_lock_key; |
513 | static struct lock_class_key vlan_netdev_addr_lock_key; |
514 | |
515 | static void vlan_dev_set_lockdep_one(struct net_device *dev, |
516 | struct netdev_queue *txq, |
517 | void *unused) |
518 | { |
519 | lockdep_set_class(&txq->_xmit_lock, &vlan_netdev_xmit_lock_key); |
520 | } |
521 | |
522 | static void vlan_dev_set_lockdep_class(struct net_device *dev) |
523 | { |
524 | lockdep_set_class(&dev->addr_list_lock, |
525 | &vlan_netdev_addr_lock_key); |
526 | netdev_for_each_tx_queue(dev, f: vlan_dev_set_lockdep_one, NULL); |
527 | } |
528 | |
529 | static __be16 vlan_parse_protocol(const struct sk_buff *skb) |
530 | { |
531 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); |
532 | |
533 | return __vlan_get_protocol(skb, type: veth->h_vlan_proto, NULL); |
534 | } |
535 | |
536 | static const struct header_ops = { |
537 | .create = vlan_dev_hard_header, |
538 | .parse = eth_header_parse, |
539 | .parse_protocol = vlan_parse_protocol, |
540 | }; |
541 | |
542 | static int (struct sk_buff *skb, struct net_device *dev, |
543 | unsigned short type, |
544 | const void *daddr, const void *saddr, |
545 | unsigned int len) |
546 | { |
547 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
548 | struct net_device *real_dev = vlan->real_dev; |
549 | |
550 | if (saddr == NULL) |
551 | saddr = dev->dev_addr; |
552 | |
553 | return dev_hard_header(skb, dev: real_dev, type, daddr, saddr, len); |
554 | } |
555 | |
556 | static const struct header_ops = { |
557 | .create = vlan_passthru_hard_header, |
558 | .parse = eth_header_parse, |
559 | .parse_protocol = vlan_parse_protocol, |
560 | }; |
561 | |
562 | static struct device_type vlan_type = { |
563 | .name = "vlan" , |
564 | }; |
565 | |
566 | static const struct net_device_ops vlan_netdev_ops; |
567 | |
568 | static int vlan_dev_init(struct net_device *dev) |
569 | { |
570 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
571 | struct net_device *real_dev = vlan->real_dev; |
572 | |
573 | netif_carrier_off(dev); |
574 | |
575 | /* IFF_BROADCAST|IFF_MULTICAST; ??? */ |
576 | dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | |
577 | IFF_MASTER | IFF_SLAVE); |
578 | dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | |
579 | (1<<__LINK_STATE_DORMANT))) | |
580 | (1<<__LINK_STATE_PRESENT); |
581 | |
582 | if (vlan->flags & VLAN_FLAG_BRIDGE_BINDING) |
583 | dev->state |= (1 << __LINK_STATE_NOCARRIER); |
584 | |
585 | dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG | |
586 | NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | |
587 | NETIF_F_GSO_ENCAP_ALL | |
588 | NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC | |
589 | NETIF_F_ALL_FCOE; |
590 | |
591 | if (real_dev->vlan_features & NETIF_F_HW_MACSEC) |
592 | dev->hw_features |= NETIF_F_HW_MACSEC; |
593 | |
594 | dev->features |= dev->hw_features | NETIF_F_LLTX; |
595 | netif_inherit_tso_max(to: dev, from: real_dev); |
596 | if (dev->features & NETIF_F_VLAN_FEATURES) |
597 | netdev_warn(dev: real_dev, format: "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n" ); |
598 | |
599 | dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE; |
600 | dev->hw_enc_features = vlan_tnl_features(real_dev); |
601 | dev->mpls_features = real_dev->mpls_features; |
602 | |
603 | /* ipv6 shared card related stuff */ |
604 | dev->dev_id = real_dev->dev_id; |
605 | |
606 | if (is_zero_ether_addr(addr: dev->dev_addr)) { |
607 | eth_hw_addr_set(dev, addr: real_dev->dev_addr); |
608 | dev->addr_assign_type = NET_ADDR_STOLEN; |
609 | } |
610 | if (is_zero_ether_addr(addr: dev->broadcast)) |
611 | memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); |
612 | |
613 | #if IS_ENABLED(CONFIG_FCOE) |
614 | dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; |
615 | #endif |
616 | |
617 | dev->needed_headroom = real_dev->needed_headroom; |
618 | if (vlan_hw_offload_capable(features: real_dev->features, proto: vlan->vlan_proto)) { |
619 | dev->header_ops = &vlan_passthru_header_ops; |
620 | dev->hard_header_len = real_dev->hard_header_len; |
621 | } else { |
622 | dev->header_ops = &vlan_header_ops; |
623 | dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; |
624 | } |
625 | |
626 | dev->netdev_ops = &vlan_netdev_ops; |
627 | |
628 | SET_NETDEV_DEVTYPE(dev, &vlan_type); |
629 | |
630 | vlan_dev_set_lockdep_class(dev); |
631 | |
632 | vlan->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats); |
633 | if (!vlan->vlan_pcpu_stats) |
634 | return -ENOMEM; |
635 | |
636 | /* Get vlan's reference to real_dev */ |
637 | netdev_hold(dev: real_dev, tracker: &vlan->dev_tracker, GFP_KERNEL); |
638 | |
639 | return 0; |
640 | } |
641 | |
642 | /* Note: this function might be called multiple times for the same device. */ |
643 | void vlan_dev_free_egress_priority(const struct net_device *dev) |
644 | { |
645 | struct vlan_priority_tci_mapping *pm; |
646 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
647 | int i; |
648 | |
649 | for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { |
650 | while ((pm = vlan->egress_priority_map[i]) != NULL) { |
651 | vlan->egress_priority_map[i] = pm->next; |
652 | kfree(objp: pm); |
653 | } |
654 | } |
655 | } |
656 | |
657 | static void vlan_dev_uninit(struct net_device *dev) |
658 | { |
659 | vlan_dev_free_egress_priority(dev); |
660 | } |
661 | |
662 | static netdev_features_t vlan_dev_fix_features(struct net_device *dev, |
663 | netdev_features_t features) |
664 | { |
665 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
666 | netdev_features_t old_features = features; |
667 | netdev_features_t lower_features; |
668 | |
669 | lower_features = netdev_intersect_features(f1: (real_dev->vlan_features | |
670 | NETIF_F_RXCSUM), |
671 | f2: real_dev->features); |
672 | |
673 | /* Add HW_CSUM setting to preserve user ability to control |
674 | * checksum offload on the vlan device. |
675 | */ |
676 | if (lower_features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)) |
677 | lower_features |= NETIF_F_HW_CSUM; |
678 | features = netdev_intersect_features(f1: features, f2: lower_features); |
679 | features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE); |
680 | features |= NETIF_F_LLTX; |
681 | |
682 | return features; |
683 | } |
684 | |
685 | static int vlan_ethtool_get_link_ksettings(struct net_device *dev, |
686 | struct ethtool_link_ksettings *cmd) |
687 | { |
688 | const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
689 | |
690 | return __ethtool_get_link_ksettings(dev: vlan->real_dev, link_ksettings: cmd); |
691 | } |
692 | |
693 | static void vlan_ethtool_get_drvinfo(struct net_device *dev, |
694 | struct ethtool_drvinfo *info) |
695 | { |
696 | strscpy(p: info->driver, q: vlan_fullname, size: sizeof(info->driver)); |
697 | strscpy(p: info->version, q: vlan_version, size: sizeof(info->version)); |
698 | strscpy(p: info->fw_version, q: "N/A" , size: sizeof(info->fw_version)); |
699 | } |
700 | |
701 | static int vlan_ethtool_get_ts_info(struct net_device *dev, |
702 | struct ethtool_ts_info *info) |
703 | { |
704 | const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
705 | const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops; |
706 | struct phy_device *phydev = vlan->real_dev->phydev; |
707 | |
708 | if (phy_has_tsinfo(phydev)) { |
709 | return phy_ts_info(phydev, tsinfo: info); |
710 | } else if (ops->get_ts_info) { |
711 | return ops->get_ts_info(vlan->real_dev, info); |
712 | } else { |
713 | info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE | |
714 | SOF_TIMESTAMPING_SOFTWARE; |
715 | info->phc_index = -1; |
716 | } |
717 | |
718 | return 0; |
719 | } |
720 | |
721 | static void vlan_dev_get_stats64(struct net_device *dev, |
722 | struct rtnl_link_stats64 *stats) |
723 | { |
724 | struct vlan_pcpu_stats *p; |
725 | u32 rx_errors = 0, tx_dropped = 0; |
726 | int i; |
727 | |
728 | for_each_possible_cpu(i) { |
729 | u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes; |
730 | unsigned int start; |
731 | |
732 | p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i); |
733 | do { |
734 | start = u64_stats_fetch_begin(syncp: &p->syncp); |
735 | rxpackets = u64_stats_read(p: &p->rx_packets); |
736 | rxbytes = u64_stats_read(p: &p->rx_bytes); |
737 | rxmulticast = u64_stats_read(p: &p->rx_multicast); |
738 | txpackets = u64_stats_read(p: &p->tx_packets); |
739 | txbytes = u64_stats_read(p: &p->tx_bytes); |
740 | } while (u64_stats_fetch_retry(syncp: &p->syncp, start)); |
741 | |
742 | stats->rx_packets += rxpackets; |
743 | stats->rx_bytes += rxbytes; |
744 | stats->multicast += rxmulticast; |
745 | stats->tx_packets += txpackets; |
746 | stats->tx_bytes += txbytes; |
747 | /* rx_errors & tx_dropped are u32 */ |
748 | rx_errors += READ_ONCE(p->rx_errors); |
749 | tx_dropped += READ_ONCE(p->tx_dropped); |
750 | } |
751 | stats->rx_errors = rx_errors; |
752 | stats->tx_dropped = tx_dropped; |
753 | } |
754 | |
755 | #ifdef CONFIG_NET_POLL_CONTROLLER |
756 | static void vlan_dev_poll_controller(struct net_device *dev) |
757 | { |
758 | return; |
759 | } |
760 | |
761 | static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) |
762 | { |
763 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
764 | struct net_device *real_dev = vlan->real_dev; |
765 | struct netpoll *netpoll; |
766 | int err = 0; |
767 | |
768 | netpoll = kzalloc(size: sizeof(*netpoll), GFP_KERNEL); |
769 | err = -ENOMEM; |
770 | if (!netpoll) |
771 | goto out; |
772 | |
773 | err = __netpoll_setup(np: netpoll, ndev: real_dev); |
774 | if (err) { |
775 | kfree(objp: netpoll); |
776 | goto out; |
777 | } |
778 | |
779 | vlan->netpoll = netpoll; |
780 | |
781 | out: |
782 | return err; |
783 | } |
784 | |
785 | static void vlan_dev_netpoll_cleanup(struct net_device *dev) |
786 | { |
787 | struct vlan_dev_priv *vlan= vlan_dev_priv(dev); |
788 | struct netpoll *netpoll = vlan->netpoll; |
789 | |
790 | if (!netpoll) |
791 | return; |
792 | |
793 | vlan->netpoll = NULL; |
794 | __netpoll_free(np: netpoll); |
795 | } |
796 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
797 | |
798 | static int vlan_dev_get_iflink(const struct net_device *dev) |
799 | { |
800 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
801 | |
802 | return real_dev->ifindex; |
803 | } |
804 | |
805 | static int vlan_dev_fill_forward_path(struct net_device_path_ctx *ctx, |
806 | struct net_device_path *path) |
807 | { |
808 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev: ctx->dev); |
809 | |
810 | path->type = DEV_PATH_VLAN; |
811 | path->encap.id = vlan->vlan_id; |
812 | path->encap.proto = vlan->vlan_proto; |
813 | path->dev = ctx->dev; |
814 | ctx->dev = vlan->real_dev; |
815 | if (ctx->num_vlans >= ARRAY_SIZE(ctx->vlan)) |
816 | return -ENOSPC; |
817 | |
818 | ctx->vlan[ctx->num_vlans].id = vlan->vlan_id; |
819 | ctx->vlan[ctx->num_vlans].proto = vlan->vlan_proto; |
820 | ctx->num_vlans++; |
821 | |
822 | return 0; |
823 | } |
824 | |
825 | #if IS_ENABLED(CONFIG_MACSEC) |
826 | |
827 | static const struct macsec_ops *vlan_get_macsec_ops(const struct macsec_context *ctx) |
828 | { |
829 | return vlan_dev_priv(dev: ctx->netdev)->real_dev->macsec_ops; |
830 | } |
831 | |
832 | static int vlan_macsec_offload(int (* const func)(struct macsec_context *), |
833 | struct macsec_context *ctx) |
834 | { |
835 | if (unlikely(!func)) |
836 | return 0; |
837 | |
838 | return (*func)(ctx); |
839 | } |
840 | |
841 | static int vlan_macsec_dev_open(struct macsec_context *ctx) |
842 | { |
843 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
844 | |
845 | if (!ops) |
846 | return -EOPNOTSUPP; |
847 | |
848 | return vlan_macsec_offload(func: ops->mdo_dev_open, ctx); |
849 | } |
850 | |
851 | static int vlan_macsec_dev_stop(struct macsec_context *ctx) |
852 | { |
853 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
854 | |
855 | if (!ops) |
856 | return -EOPNOTSUPP; |
857 | |
858 | return vlan_macsec_offload(func: ops->mdo_dev_stop, ctx); |
859 | } |
860 | |
861 | static int vlan_macsec_add_secy(struct macsec_context *ctx) |
862 | { |
863 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
864 | |
865 | if (!ops) |
866 | return -EOPNOTSUPP; |
867 | |
868 | return vlan_macsec_offload(func: ops->mdo_add_secy, ctx); |
869 | } |
870 | |
871 | static int vlan_macsec_upd_secy(struct macsec_context *ctx) |
872 | { |
873 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
874 | |
875 | if (!ops) |
876 | return -EOPNOTSUPP; |
877 | |
878 | return vlan_macsec_offload(func: ops->mdo_upd_secy, ctx); |
879 | } |
880 | |
881 | static int vlan_macsec_del_secy(struct macsec_context *ctx) |
882 | { |
883 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
884 | |
885 | if (!ops) |
886 | return -EOPNOTSUPP; |
887 | |
888 | return vlan_macsec_offload(func: ops->mdo_del_secy, ctx); |
889 | } |
890 | |
891 | static int vlan_macsec_add_rxsc(struct macsec_context *ctx) |
892 | { |
893 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
894 | |
895 | if (!ops) |
896 | return -EOPNOTSUPP; |
897 | |
898 | return vlan_macsec_offload(func: ops->mdo_add_rxsc, ctx); |
899 | } |
900 | |
901 | static int vlan_macsec_upd_rxsc(struct macsec_context *ctx) |
902 | { |
903 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
904 | |
905 | if (!ops) |
906 | return -EOPNOTSUPP; |
907 | |
908 | return vlan_macsec_offload(func: ops->mdo_upd_rxsc, ctx); |
909 | } |
910 | |
911 | static int vlan_macsec_del_rxsc(struct macsec_context *ctx) |
912 | { |
913 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
914 | |
915 | if (!ops) |
916 | return -EOPNOTSUPP; |
917 | |
918 | return vlan_macsec_offload(func: ops->mdo_del_rxsc, ctx); |
919 | } |
920 | |
921 | static int vlan_macsec_add_rxsa(struct macsec_context *ctx) |
922 | { |
923 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
924 | |
925 | if (!ops) |
926 | return -EOPNOTSUPP; |
927 | |
928 | return vlan_macsec_offload(func: ops->mdo_add_rxsa, ctx); |
929 | } |
930 | |
931 | static int vlan_macsec_upd_rxsa(struct macsec_context *ctx) |
932 | { |
933 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
934 | |
935 | if (!ops) |
936 | return -EOPNOTSUPP; |
937 | |
938 | return vlan_macsec_offload(func: ops->mdo_upd_rxsa, ctx); |
939 | } |
940 | |
941 | static int vlan_macsec_del_rxsa(struct macsec_context *ctx) |
942 | { |
943 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
944 | |
945 | if (!ops) |
946 | return -EOPNOTSUPP; |
947 | |
948 | return vlan_macsec_offload(func: ops->mdo_del_rxsa, ctx); |
949 | } |
950 | |
951 | static int vlan_macsec_add_txsa(struct macsec_context *ctx) |
952 | { |
953 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
954 | |
955 | if (!ops) |
956 | return -EOPNOTSUPP; |
957 | |
958 | return vlan_macsec_offload(func: ops->mdo_add_txsa, ctx); |
959 | } |
960 | |
961 | static int vlan_macsec_upd_txsa(struct macsec_context *ctx) |
962 | { |
963 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
964 | |
965 | if (!ops) |
966 | return -EOPNOTSUPP; |
967 | |
968 | return vlan_macsec_offload(func: ops->mdo_upd_txsa, ctx); |
969 | } |
970 | |
971 | static int vlan_macsec_del_txsa(struct macsec_context *ctx) |
972 | { |
973 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
974 | |
975 | if (!ops) |
976 | return -EOPNOTSUPP; |
977 | |
978 | return vlan_macsec_offload(func: ops->mdo_del_txsa, ctx); |
979 | } |
980 | |
981 | static int vlan_macsec_get_dev_stats(struct macsec_context *ctx) |
982 | { |
983 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
984 | |
985 | if (!ops) |
986 | return -EOPNOTSUPP; |
987 | |
988 | return vlan_macsec_offload(func: ops->mdo_get_dev_stats, ctx); |
989 | } |
990 | |
991 | static int vlan_macsec_get_tx_sc_stats(struct macsec_context *ctx) |
992 | { |
993 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
994 | |
995 | if (!ops) |
996 | return -EOPNOTSUPP; |
997 | |
998 | return vlan_macsec_offload(func: ops->mdo_get_tx_sc_stats, ctx); |
999 | } |
1000 | |
1001 | static int vlan_macsec_get_tx_sa_stats(struct macsec_context *ctx) |
1002 | { |
1003 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
1004 | |
1005 | if (!ops) |
1006 | return -EOPNOTSUPP; |
1007 | |
1008 | return vlan_macsec_offload(func: ops->mdo_get_tx_sa_stats, ctx); |
1009 | } |
1010 | |
1011 | static int vlan_macsec_get_rx_sc_stats(struct macsec_context *ctx) |
1012 | { |
1013 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
1014 | |
1015 | if (!ops) |
1016 | return -EOPNOTSUPP; |
1017 | |
1018 | return vlan_macsec_offload(func: ops->mdo_get_rx_sc_stats, ctx); |
1019 | } |
1020 | |
1021 | static int vlan_macsec_get_rx_sa_stats(struct macsec_context *ctx) |
1022 | { |
1023 | const struct macsec_ops *ops = vlan_get_macsec_ops(ctx); |
1024 | |
1025 | if (!ops) |
1026 | return -EOPNOTSUPP; |
1027 | |
1028 | return vlan_macsec_offload(func: ops->mdo_get_rx_sa_stats, ctx); |
1029 | } |
1030 | |
1031 | static const struct macsec_ops macsec_offload_ops = { |
1032 | /* Device wide */ |
1033 | .mdo_dev_open = vlan_macsec_dev_open, |
1034 | .mdo_dev_stop = vlan_macsec_dev_stop, |
1035 | /* SecY */ |
1036 | .mdo_add_secy = vlan_macsec_add_secy, |
1037 | .mdo_upd_secy = vlan_macsec_upd_secy, |
1038 | .mdo_del_secy = vlan_macsec_del_secy, |
1039 | /* Security channels */ |
1040 | .mdo_add_rxsc = vlan_macsec_add_rxsc, |
1041 | .mdo_upd_rxsc = vlan_macsec_upd_rxsc, |
1042 | .mdo_del_rxsc = vlan_macsec_del_rxsc, |
1043 | /* Security associations */ |
1044 | .mdo_add_rxsa = vlan_macsec_add_rxsa, |
1045 | .mdo_upd_rxsa = vlan_macsec_upd_rxsa, |
1046 | .mdo_del_rxsa = vlan_macsec_del_rxsa, |
1047 | .mdo_add_txsa = vlan_macsec_add_txsa, |
1048 | .mdo_upd_txsa = vlan_macsec_upd_txsa, |
1049 | .mdo_del_txsa = vlan_macsec_del_txsa, |
1050 | /* Statistics */ |
1051 | .mdo_get_dev_stats = vlan_macsec_get_dev_stats, |
1052 | .mdo_get_tx_sc_stats = vlan_macsec_get_tx_sc_stats, |
1053 | .mdo_get_tx_sa_stats = vlan_macsec_get_tx_sa_stats, |
1054 | .mdo_get_rx_sc_stats = vlan_macsec_get_rx_sc_stats, |
1055 | .mdo_get_rx_sa_stats = vlan_macsec_get_rx_sa_stats, |
1056 | }; |
1057 | |
1058 | #endif |
1059 | |
1060 | static const struct ethtool_ops vlan_ethtool_ops = { |
1061 | .get_link_ksettings = vlan_ethtool_get_link_ksettings, |
1062 | .get_drvinfo = vlan_ethtool_get_drvinfo, |
1063 | .get_link = ethtool_op_get_link, |
1064 | .get_ts_info = vlan_ethtool_get_ts_info, |
1065 | }; |
1066 | |
1067 | static const struct net_device_ops vlan_netdev_ops = { |
1068 | .ndo_change_mtu = vlan_dev_change_mtu, |
1069 | .ndo_init = vlan_dev_init, |
1070 | .ndo_uninit = vlan_dev_uninit, |
1071 | .ndo_open = vlan_dev_open, |
1072 | .ndo_stop = vlan_dev_stop, |
1073 | .ndo_start_xmit = vlan_dev_hard_start_xmit, |
1074 | .ndo_validate_addr = eth_validate_addr, |
1075 | .ndo_set_mac_address = vlan_dev_set_mac_address, |
1076 | .ndo_set_rx_mode = vlan_dev_set_rx_mode, |
1077 | .ndo_change_rx_flags = vlan_dev_change_rx_flags, |
1078 | .ndo_eth_ioctl = vlan_dev_ioctl, |
1079 | .ndo_neigh_setup = vlan_dev_neigh_setup, |
1080 | .ndo_get_stats64 = vlan_dev_get_stats64, |
1081 | #if IS_ENABLED(CONFIG_FCOE) |
1082 | .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, |
1083 | .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, |
1084 | .ndo_fcoe_enable = vlan_dev_fcoe_enable, |
1085 | .ndo_fcoe_disable = vlan_dev_fcoe_disable, |
1086 | .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, |
1087 | #endif |
1088 | #ifdef NETDEV_FCOE_WWNN |
1089 | .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, |
1090 | #endif |
1091 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1092 | .ndo_poll_controller = vlan_dev_poll_controller, |
1093 | .ndo_netpoll_setup = vlan_dev_netpoll_setup, |
1094 | .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup, |
1095 | #endif |
1096 | .ndo_fix_features = vlan_dev_fix_features, |
1097 | .ndo_get_iflink = vlan_dev_get_iflink, |
1098 | .ndo_fill_forward_path = vlan_dev_fill_forward_path, |
1099 | .ndo_hwtstamp_get = vlan_hwtstamp_get, |
1100 | .ndo_hwtstamp_set = vlan_hwtstamp_set, |
1101 | }; |
1102 | |
1103 | static void vlan_dev_free(struct net_device *dev) |
1104 | { |
1105 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
1106 | |
1107 | free_percpu(pdata: vlan->vlan_pcpu_stats); |
1108 | vlan->vlan_pcpu_stats = NULL; |
1109 | |
1110 | /* Get rid of the vlan's reference to real_dev */ |
1111 | netdev_put(dev: vlan->real_dev, tracker: &vlan->dev_tracker); |
1112 | } |
1113 | |
1114 | void vlan_setup(struct net_device *dev) |
1115 | { |
1116 | ether_setup(dev); |
1117 | |
1118 | dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE; |
1119 | dev->priv_flags |= IFF_UNICAST_FLT; |
1120 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
1121 | netif_keep_dst(dev); |
1122 | |
1123 | dev->netdev_ops = &vlan_netdev_ops; |
1124 | dev->needs_free_netdev = true; |
1125 | dev->priv_destructor = vlan_dev_free; |
1126 | dev->ethtool_ops = &vlan_ethtool_ops; |
1127 | |
1128 | #if IS_ENABLED(CONFIG_MACSEC) |
1129 | dev->macsec_ops = &macsec_offload_ops; |
1130 | #endif |
1131 | dev->min_mtu = 0; |
1132 | dev->max_mtu = ETH_MAX_MTU; |
1133 | |
1134 | eth_zero_addr(addr: dev->broadcast); |
1135 | } |
1136 | |