1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
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
30#include "vlan.h"
31#include "vlanproc.h"
32#include <linux/if_vlan.h>
33#include <linux/netpoll.h>
34
35
36
37
38
39
40
41
42
43
44static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
45 unsigned short type,
46 const void *daddr, const void *saddr,
47 unsigned int len)
48{
49 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
50 struct vlan_hdr *vhdr;
51 unsigned int vhdrlen = 0;
52 u16 vlan_tci = 0;
53 int rc;
54
55 if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) {
56 vhdr = skb_push(skb, VLAN_HLEN);
57
58 vlan_tci = vlan->vlan_id;
59 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority);
60 vhdr->h_vlan_TCI = htons(vlan_tci);
61
62
63
64
65
66 if (type != ETH_P_802_3 && type != ETH_P_802_2)
67 vhdr->h_vlan_encapsulated_proto = htons(type);
68 else
69 vhdr->h_vlan_encapsulated_proto = htons(len);
70
71 skb->protocol = vlan->vlan_proto;
72 type = ntohs(vlan->vlan_proto);
73 vhdrlen = VLAN_HLEN;
74 }
75
76
77 if (saddr == NULL)
78 saddr = dev->dev_addr;
79
80
81 dev = vlan->real_dev;
82 rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen);
83 if (rc > 0)
84 rc += vhdrlen;
85 return rc;
86}
87
88static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb)
89{
90#ifdef CONFIG_NET_POLL_CONTROLLER
91 return netpoll_send_skb(vlan->netpoll, skb);
92#else
93 BUG();
94 return NETDEV_TX_OK;
95#endif
96}
97
98static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
99 struct net_device *dev)
100{
101 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
102 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
103 unsigned int len;
104 int ret;
105
106
107
108
109
110
111 if (veth->h_vlan_proto != vlan->vlan_proto ||
112 vlan->flags & VLAN_FLAG_REORDER_HDR) {
113 u16 vlan_tci;
114 vlan_tci = vlan->vlan_id;
115 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority);
116 __vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci);
117 }
118
119 skb->dev = vlan->real_dev;
120 len = skb->len;
121 if (unlikely(netpoll_tx_running(dev)))
122 return vlan_netpoll_send_skb(vlan, skb);
123
124 ret = dev_queue_xmit(skb);
125
126 if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
127 struct vlan_pcpu_stats *stats;
128
129 stats = this_cpu_ptr(vlan->vlan_pcpu_stats);
130 u64_stats_update_begin(&stats->syncp);
131 stats->tx_packets++;
132 stats->tx_bytes += len;
133 u64_stats_update_end(&stats->syncp);
134 } else {
135 this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped);
136 }
137
138 return ret;
139}
140
141static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu)
142{
143 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
144 unsigned int max_mtu = real_dev->mtu;
145
146 if (netif_reduces_vlan_mtu(real_dev))
147 max_mtu -= VLAN_HLEN;
148 if (max_mtu < new_mtu)
149 return -ERANGE;
150
151 dev->mtu = new_mtu;
152
153 return 0;
154}
155
156void vlan_dev_set_ingress_priority(const struct net_device *dev,
157 u32 skb_prio, u16 vlan_prio)
158{
159 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
160
161 if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio)
162 vlan->nr_ingress_mappings--;
163 else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio)
164 vlan->nr_ingress_mappings++;
165
166 vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio;
167}
168
169int vlan_dev_set_egress_priority(const struct net_device *dev,
170 u32 skb_prio, u16 vlan_prio)
171{
172 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
173 struct vlan_priority_tci_mapping *mp = NULL;
174 struct vlan_priority_tci_mapping *np;
175 u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK;
176
177
178 mp = vlan->egress_priority_map[skb_prio & 0xF];
179 while (mp) {
180 if (mp->priority == skb_prio) {
181 if (mp->vlan_qos && !vlan_qos)
182 vlan->nr_egress_mappings--;
183 else if (!mp->vlan_qos && vlan_qos)
184 vlan->nr_egress_mappings++;
185 mp->vlan_qos = vlan_qos;
186 return 0;
187 }
188 mp = mp->next;
189 }
190
191
192 mp = vlan->egress_priority_map[skb_prio & 0xF];
193 np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL);
194 if (!np)
195 return -ENOBUFS;
196
197 np->next = mp;
198 np->priority = skb_prio;
199 np->vlan_qos = vlan_qos;
200
201
202
203
204 smp_wmb();
205 vlan->egress_priority_map[skb_prio & 0xF] = np;
206 if (vlan_qos)
207 vlan->nr_egress_mappings++;
208 return 0;
209}
210
211
212
213
214int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
215{
216 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
217 u32 old_flags = vlan->flags;
218
219 if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
220 VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP |
221 VLAN_FLAG_BRIDGE_BINDING))
222 return -EINVAL;
223
224 vlan->flags = (old_flags & ~mask) | (flags & mask);
225
226 if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) {
227 if (vlan->flags & VLAN_FLAG_GVRP)
228 vlan_gvrp_request_join(dev);
229 else
230 vlan_gvrp_request_leave(dev);
231 }
232
233 if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) {
234 if (vlan->flags & VLAN_FLAG_MVRP)
235 vlan_mvrp_request_join(dev);
236 else
237 vlan_mvrp_request_leave(dev);
238 }
239 return 0;
240}
241
242void vlan_dev_get_realdev_name(const struct net_device *dev, char *result, size_t size)
243{
244 strscpy_pad(result, vlan_dev_priv(dev)->real_dev->name, size);
245}
246
247bool vlan_dev_inherit_address(struct net_device *dev,
248 struct net_device *real_dev)
249{
250 if (dev->addr_assign_type != NET_ADDR_STOLEN)
251 return false;
252
253 ether_addr_copy(dev->dev_addr, real_dev->dev_addr);
254 call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
255 return true;
256}
257
258static int vlan_dev_open(struct net_device *dev)
259{
260 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
261 struct net_device *real_dev = vlan->real_dev;
262 int err;
263
264 if (!(real_dev->flags & IFF_UP) &&
265 !(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
266 return -ENETDOWN;
267
268 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr) &&
269 !vlan_dev_inherit_address(dev, real_dev)) {
270 err = dev_uc_add(real_dev, dev->dev_addr);
271 if (err < 0)
272 goto out;
273 }
274
275 if (dev->flags & IFF_ALLMULTI) {
276 err = dev_set_allmulti(real_dev, 1);
277 if (err < 0)
278 goto del_unicast;
279 }
280 if (dev->flags & IFF_PROMISC) {
281 err = dev_set_promiscuity(real_dev, 1);
282 if (err < 0)
283 goto clear_allmulti;
284 }
285
286 ether_addr_copy(vlan->real_dev_addr, real_dev->dev_addr);
287
288 if (vlan->flags & VLAN_FLAG_GVRP)
289 vlan_gvrp_request_join(dev);
290
291 if (vlan->flags & VLAN_FLAG_MVRP)
292 vlan_mvrp_request_join(dev);
293
294 if (netif_carrier_ok(real_dev) &&
295 !(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
296 netif_carrier_on(dev);
297 return 0;
298
299clear_allmulti:
300 if (dev->flags & IFF_ALLMULTI)
301 dev_set_allmulti(real_dev, -1);
302del_unicast:
303 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
304 dev_uc_del(real_dev, dev->dev_addr);
305out:
306 netif_carrier_off(dev);
307 return err;
308}
309
310static int vlan_dev_stop(struct net_device *dev)
311{
312 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
313 struct net_device *real_dev = vlan->real_dev;
314
315 dev_mc_unsync(real_dev, dev);
316 dev_uc_unsync(real_dev, dev);
317 if (dev->flags & IFF_ALLMULTI)
318 dev_set_allmulti(real_dev, -1);
319 if (dev->flags & IFF_PROMISC)
320 dev_set_promiscuity(real_dev, -1);
321
322 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
323 dev_uc_del(real_dev, dev->dev_addr);
324
325 if (!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
326 netif_carrier_off(dev);
327 return 0;
328}
329
330static int vlan_dev_set_mac_address(struct net_device *dev, void *p)
331{
332 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
333 struct sockaddr *addr = p;
334 int err;
335
336 if (!is_valid_ether_addr(addr->sa_data))
337 return -EADDRNOTAVAIL;
338
339 if (!(dev->flags & IFF_UP))
340 goto out;
341
342 if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) {
343 err = dev_uc_add(real_dev, addr->sa_data);
344 if (err < 0)
345 return err;
346 }
347
348 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
349 dev_uc_del(real_dev, dev->dev_addr);
350
351out:
352 ether_addr_copy(dev->dev_addr, addr->sa_data);
353 return 0;
354}
355
356static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
357{
358 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
359 const struct net_device_ops *ops = real_dev->netdev_ops;
360 struct ifreq ifrr;
361 int err = -EOPNOTSUPP;
362
363 strscpy_pad(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
364 ifrr.ifr_ifru = ifr->ifr_ifru;
365
366 switch (cmd) {
367 case SIOCSHWTSTAMP:
368 if (!net_eq(dev_net(dev), &init_net))
369 break;
370 fallthrough;
371 case SIOCGMIIPHY:
372 case SIOCGMIIREG:
373 case SIOCSMIIREG:
374 case SIOCGHWTSTAMP:
375 if (netif_device_present(real_dev) && ops->ndo_do_ioctl)
376 err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd);
377 break;
378 }
379
380 if (!err)
381 ifr->ifr_ifru = ifrr.ifr_ifru;
382
383 return err;
384}
385
386static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa)
387{
388 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
389 const struct net_device_ops *ops = real_dev->netdev_ops;
390 int err = 0;
391
392 if (netif_device_present(real_dev) && ops->ndo_neigh_setup)
393 err = ops->ndo_neigh_setup(real_dev, pa);
394
395 return err;
396}
397
398#if IS_ENABLED(CONFIG_FCOE)
399static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid,
400 struct scatterlist *sgl, unsigned int sgc)
401{
402 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
403 const struct net_device_ops *ops = real_dev->netdev_ops;
404 int rc = 0;
405
406 if (ops->ndo_fcoe_ddp_setup)
407 rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc);
408
409 return rc;
410}
411
412static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid)
413{
414 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
415 const struct net_device_ops *ops = real_dev->netdev_ops;
416 int len = 0;
417
418 if (ops->ndo_fcoe_ddp_done)
419 len = ops->ndo_fcoe_ddp_done(real_dev, xid);
420
421 return len;
422}
423
424static int vlan_dev_fcoe_enable(struct net_device *dev)
425{
426 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
427 const struct net_device_ops *ops = real_dev->netdev_ops;
428 int rc = -EINVAL;
429
430 if (ops->ndo_fcoe_enable)
431 rc = ops->ndo_fcoe_enable(real_dev);
432 return rc;
433}
434
435static int vlan_dev_fcoe_disable(struct net_device *dev)
436{
437 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
438 const struct net_device_ops *ops = real_dev->netdev_ops;
439 int rc = -EINVAL;
440
441 if (ops->ndo_fcoe_disable)
442 rc = ops->ndo_fcoe_disable(real_dev);
443 return rc;
444}
445
446static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid,
447 struct scatterlist *sgl, unsigned int sgc)
448{
449 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
450 const struct net_device_ops *ops = real_dev->netdev_ops;
451 int rc = 0;
452
453 if (ops->ndo_fcoe_ddp_target)
454 rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc);
455
456 return rc;
457}
458#endif
459
460#ifdef NETDEV_FCOE_WWNN
461static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
462{
463 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
464 const struct net_device_ops *ops = real_dev->netdev_ops;
465 int rc = -EINVAL;
466
467 if (ops->ndo_fcoe_get_wwn)
468 rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type);
469 return rc;
470}
471#endif
472
473static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
474{
475 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
476
477 if (dev->flags & IFF_UP) {
478 if (change & IFF_ALLMULTI)
479 dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
480 if (change & IFF_PROMISC)
481 dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
482 }
483}
484
485static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
486{
487 dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
488 dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
489}
490
491
492
493
494
495
496static struct lock_class_key vlan_netdev_xmit_lock_key;
497static struct lock_class_key vlan_netdev_addr_lock_key;
498
499static void vlan_dev_set_lockdep_one(struct net_device *dev,
500 struct netdev_queue *txq,
501 void *unused)
502{
503 lockdep_set_class(&txq->_xmit_lock, &vlan_netdev_xmit_lock_key);
504}
505
506static void vlan_dev_set_lockdep_class(struct net_device *dev)
507{
508 lockdep_set_class(&dev->addr_list_lock,
509 &vlan_netdev_addr_lock_key);
510 netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, NULL);
511}
512
513static __be16 vlan_parse_protocol(const struct sk_buff *skb)
514{
515 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
516
517 return __vlan_get_protocol(skb, veth->h_vlan_proto, NULL);
518}
519
520static const struct header_ops vlan_header_ops = {
521 .create = vlan_dev_hard_header,
522 .parse = eth_header_parse,
523 .parse_protocol = vlan_parse_protocol,
524};
525
526static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev,
527 unsigned short type,
528 const void *daddr, const void *saddr,
529 unsigned int len)
530{
531 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
532 struct net_device *real_dev = vlan->real_dev;
533
534 if (saddr == NULL)
535 saddr = dev->dev_addr;
536
537 return dev_hard_header(skb, real_dev, type, daddr, saddr, len);
538}
539
540static const struct header_ops vlan_passthru_header_ops = {
541 .create = vlan_passthru_hard_header,
542 .parse = eth_header_parse,
543 .parse_protocol = vlan_parse_protocol,
544};
545
546static struct device_type vlan_type = {
547 .name = "vlan",
548};
549
550static const struct net_device_ops vlan_netdev_ops;
551
552static int vlan_dev_init(struct net_device *dev)
553{
554 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
555 struct net_device *real_dev = vlan->real_dev;
556
557 netif_carrier_off(dev);
558
559
560 dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
561 IFF_MASTER | IFF_SLAVE);
562 dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
563 (1<<__LINK_STATE_DORMANT))) |
564 (1<<__LINK_STATE_PRESENT);
565
566 if (vlan->flags & VLAN_FLAG_BRIDGE_BINDING)
567 dev->state |= (1 << __LINK_STATE_NOCARRIER);
568
569 dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG |
570 NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE |
571 NETIF_F_GSO_ENCAP_ALL |
572 NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC |
573 NETIF_F_ALL_FCOE;
574
575 dev->features |= dev->hw_features | NETIF_F_LLTX;
576 dev->gso_max_size = real_dev->gso_max_size;
577 dev->gso_max_segs = real_dev->gso_max_segs;
578 if (dev->features & NETIF_F_VLAN_FEATURES)
579 netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n");
580
581 dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE;
582 dev->hw_enc_features = vlan_tnl_features(real_dev);
583 dev->mpls_features = real_dev->mpls_features;
584
585
586 dev->dev_id = real_dev->dev_id;
587
588 if (is_zero_ether_addr(dev->dev_addr)) {
589 ether_addr_copy(dev->dev_addr, real_dev->dev_addr);
590 dev->addr_assign_type = NET_ADDR_STOLEN;
591 }
592 if (is_zero_ether_addr(dev->broadcast))
593 memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
594
595#if IS_ENABLED(CONFIG_FCOE)
596 dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
597#endif
598
599 dev->needed_headroom = real_dev->needed_headroom;
600 if (vlan_hw_offload_capable(real_dev->features, vlan->vlan_proto)) {
601 dev->header_ops = &vlan_passthru_header_ops;
602 dev->hard_header_len = real_dev->hard_header_len;
603 } else {
604 dev->header_ops = &vlan_header_ops;
605 dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
606 }
607
608 dev->netdev_ops = &vlan_netdev_ops;
609
610 SET_NETDEV_DEVTYPE(dev, &vlan_type);
611
612 vlan_dev_set_lockdep_class(dev);
613
614 vlan->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
615 if (!vlan->vlan_pcpu_stats)
616 return -ENOMEM;
617
618 return 0;
619}
620
621
622void vlan_dev_uninit(struct net_device *dev)
623{
624 struct vlan_priority_tci_mapping *pm;
625 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
626 int i;
627
628 for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
629 while ((pm = vlan->egress_priority_map[i]) != NULL) {
630 vlan->egress_priority_map[i] = pm->next;
631 kfree(pm);
632 }
633 }
634}
635
636static netdev_features_t vlan_dev_fix_features(struct net_device *dev,
637 netdev_features_t features)
638{
639 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
640 netdev_features_t old_features = features;
641 netdev_features_t lower_features;
642
643 lower_features = netdev_intersect_features((real_dev->vlan_features |
644 NETIF_F_RXCSUM),
645 real_dev->features);
646
647
648
649
650 if (lower_features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
651 lower_features |= NETIF_F_HW_CSUM;
652 features = netdev_intersect_features(features, lower_features);
653 features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE);
654 features |= NETIF_F_LLTX;
655
656 return features;
657}
658
659static int vlan_ethtool_get_link_ksettings(struct net_device *dev,
660 struct ethtool_link_ksettings *cmd)
661{
662 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
663
664 return __ethtool_get_link_ksettings(vlan->real_dev, cmd);
665}
666
667static void vlan_ethtool_get_drvinfo(struct net_device *dev,
668 struct ethtool_drvinfo *info)
669{
670 strlcpy(info->driver, vlan_fullname, sizeof(info->driver));
671 strlcpy(info->version, vlan_version, sizeof(info->version));
672 strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
673}
674
675static int vlan_ethtool_get_ts_info(struct net_device *dev,
676 struct ethtool_ts_info *info)
677{
678 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
679 const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops;
680 struct phy_device *phydev = vlan->real_dev->phydev;
681
682 if (phy_has_tsinfo(phydev)) {
683 return phy_ts_info(phydev, info);
684 } else if (ops->get_ts_info) {
685 return ops->get_ts_info(vlan->real_dev, info);
686 } else {
687 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
688 SOF_TIMESTAMPING_SOFTWARE;
689 info->phc_index = -1;
690 }
691
692 return 0;
693}
694
695static void vlan_dev_get_stats64(struct net_device *dev,
696 struct rtnl_link_stats64 *stats)
697{
698 struct vlan_pcpu_stats *p;
699 u32 rx_errors = 0, tx_dropped = 0;
700 int i;
701
702 for_each_possible_cpu(i) {
703 u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
704 unsigned int start;
705
706 p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i);
707 do {
708 start = u64_stats_fetch_begin_irq(&p->syncp);
709 rxpackets = p->rx_packets;
710 rxbytes = p->rx_bytes;
711 rxmulticast = p->rx_multicast;
712 txpackets = p->tx_packets;
713 txbytes = p->tx_bytes;
714 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
715
716 stats->rx_packets += rxpackets;
717 stats->rx_bytes += rxbytes;
718 stats->multicast += rxmulticast;
719 stats->tx_packets += txpackets;
720 stats->tx_bytes += txbytes;
721
722 rx_errors += p->rx_errors;
723 tx_dropped += p->tx_dropped;
724 }
725 stats->rx_errors = rx_errors;
726 stats->tx_dropped = tx_dropped;
727}
728
729#ifdef CONFIG_NET_POLL_CONTROLLER
730static void vlan_dev_poll_controller(struct net_device *dev)
731{
732 return;
733}
734
735static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo)
736{
737 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
738 struct net_device *real_dev = vlan->real_dev;
739 struct netpoll *netpoll;
740 int err = 0;
741
742 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
743 err = -ENOMEM;
744 if (!netpoll)
745 goto out;
746
747 err = __netpoll_setup(netpoll, real_dev);
748 if (err) {
749 kfree(netpoll);
750 goto out;
751 }
752
753 vlan->netpoll = netpoll;
754
755out:
756 return err;
757}
758
759static void vlan_dev_netpoll_cleanup(struct net_device *dev)
760{
761 struct vlan_dev_priv *vlan= vlan_dev_priv(dev);
762 struct netpoll *netpoll = vlan->netpoll;
763
764 if (!netpoll)
765 return;
766
767 vlan->netpoll = NULL;
768 __netpoll_free(netpoll);
769}
770#endif
771
772static int vlan_dev_get_iflink(const struct net_device *dev)
773{
774 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
775
776 return real_dev->ifindex;
777}
778
779static int vlan_dev_fill_forward_path(struct net_device_path_ctx *ctx,
780 struct net_device_path *path)
781{
782 struct vlan_dev_priv *vlan = vlan_dev_priv(ctx->dev);
783
784 path->type = DEV_PATH_VLAN;
785 path->encap.id = vlan->vlan_id;
786 path->encap.proto = vlan->vlan_proto;
787 path->dev = ctx->dev;
788 ctx->dev = vlan->real_dev;
789 if (ctx->num_vlans >= ARRAY_SIZE(ctx->vlan))
790 return -ENOSPC;
791
792 ctx->vlan[ctx->num_vlans].id = vlan->vlan_id;
793 ctx->vlan[ctx->num_vlans].proto = vlan->vlan_proto;
794 ctx->num_vlans++;
795
796 return 0;
797}
798
799static const struct ethtool_ops vlan_ethtool_ops = {
800 .get_link_ksettings = vlan_ethtool_get_link_ksettings,
801 .get_drvinfo = vlan_ethtool_get_drvinfo,
802 .get_link = ethtool_op_get_link,
803 .get_ts_info = vlan_ethtool_get_ts_info,
804};
805
806static const struct net_device_ops vlan_netdev_ops = {
807 .ndo_change_mtu = vlan_dev_change_mtu,
808 .ndo_init = vlan_dev_init,
809 .ndo_uninit = vlan_dev_uninit,
810 .ndo_open = vlan_dev_open,
811 .ndo_stop = vlan_dev_stop,
812 .ndo_start_xmit = vlan_dev_hard_start_xmit,
813 .ndo_validate_addr = eth_validate_addr,
814 .ndo_set_mac_address = vlan_dev_set_mac_address,
815 .ndo_set_rx_mode = vlan_dev_set_rx_mode,
816 .ndo_change_rx_flags = vlan_dev_change_rx_flags,
817 .ndo_do_ioctl = vlan_dev_ioctl,
818 .ndo_neigh_setup = vlan_dev_neigh_setup,
819 .ndo_get_stats64 = vlan_dev_get_stats64,
820#if IS_ENABLED(CONFIG_FCOE)
821 .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
822 .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
823 .ndo_fcoe_enable = vlan_dev_fcoe_enable,
824 .ndo_fcoe_disable = vlan_dev_fcoe_disable,
825 .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target,
826#endif
827#ifdef NETDEV_FCOE_WWNN
828 .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
829#endif
830#ifdef CONFIG_NET_POLL_CONTROLLER
831 .ndo_poll_controller = vlan_dev_poll_controller,
832 .ndo_netpoll_setup = vlan_dev_netpoll_setup,
833 .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup,
834#endif
835 .ndo_fix_features = vlan_dev_fix_features,
836 .ndo_get_iflink = vlan_dev_get_iflink,
837 .ndo_fill_forward_path = vlan_dev_fill_forward_path,
838};
839
840static void vlan_dev_free(struct net_device *dev)
841{
842 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
843
844 free_percpu(vlan->vlan_pcpu_stats);
845 vlan->vlan_pcpu_stats = NULL;
846}
847
848void vlan_setup(struct net_device *dev)
849{
850 ether_setup(dev);
851
852 dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE;
853 dev->priv_flags |= IFF_UNICAST_FLT;
854 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
855 netif_keep_dst(dev);
856
857 dev->netdev_ops = &vlan_netdev_ops;
858 dev->needs_free_netdev = true;
859 dev->priv_destructor = vlan_dev_free;
860 dev->ethtool_ops = &vlan_ethtool_ops;
861
862 dev->min_mtu = 0;
863 dev->max_mtu = ETH_MAX_MTU;
864
865 eth_zero_addr(dev->broadcast);
866}
867
