net: remove use of ndo_set_multicast_list in drivers
[linux-3.10.git] / net / 8021q / vlan_dev.c
1 /* -*- linux-c -*-
2  * INET         802.1Q VLAN
3  *              Ethernet-type device handling.
4  *
5  * Authors:     Ben Greear <greearb@candelatech.com>
6  *              Please send support related email to: netdev@vger.kernel.org
7  *              VLAN Home Page: http://www.candelatech.com/~greear/vlan.html
8  *
9  * Fixes:       Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com>
10  *                - reset skb->pkt_type on incoming packets when MAC was changed
11  *                - see that changed MAC is saddr for outgoing packets
12  *              Oct 20, 2001:  Ard van Breeman:
13  *                - Fix MC-list, finally.
14  *                - Flush MC-list on VLAN destroy.
15  *
16  *
17  *              This program is free software; you can redistribute it and/or
18  *              modify it under the terms of the GNU General Public License
19  *              as published by the Free Software Foundation; either version
20  *              2 of the License, or (at your option) any later version.
21  */
22
23 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
25 #include <linux/module.h>
26 #include <linux/slab.h>
27 #include <linux/skbuff.h>
28 #include <linux/netdevice.h>
29 #include <linux/etherdevice.h>
30 #include <linux/ethtool.h>
31 #include <net/arp.h>
32
33 #include "vlan.h"
34 #include "vlanproc.h"
35 #include <linux/if_vlan.h>
36
37 /*
38  *      Rebuild the Ethernet MAC header. This is called after an ARP
39  *      (or in future other address resolution) has completed on this
40  *      sk_buff. We now let ARP fill in the other fields.
41  *
42  *      This routine CANNOT use cached dst->neigh!
43  *      Really, it is used only when dst->neigh is wrong.
44  *
45  * TODO:  This needs a checkup, I'm ignorant here. --BLG
46  */
47 static int vlan_dev_rebuild_header(struct sk_buff *skb)
48 {
49         struct net_device *dev = skb->dev;
50         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
51
52         switch (veth->h_vlan_encapsulated_proto) {
53 #ifdef CONFIG_INET
54         case htons(ETH_P_IP):
55
56                 /* TODO:  Confirm this will work with VLAN headers... */
57                 return arp_find(veth->h_dest, skb);
58 #endif
59         default:
60                 pr_debug("%s: unable to resolve type %X addresses\n",
61                          dev->name, ntohs(veth->h_vlan_encapsulated_proto));
62
63                 memcpy(veth->h_source, dev->dev_addr, ETH_ALEN);
64                 break;
65         }
66
67         return 0;
68 }
69
70 static inline u16
71 vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb)
72 {
73         struct vlan_priority_tci_mapping *mp;
74
75         mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)];
76         while (mp) {
77                 if (mp->priority == skb->priority) {
78                         return mp->vlan_qos; /* This should already be shifted
79                                               * to mask correctly with the
80                                               * VLAN's TCI */
81                 }
82                 mp = mp->next;
83         }
84         return 0;
85 }
86
87 /*
88  *      Create the VLAN header for an arbitrary protocol layer
89  *
90  *      saddr=NULL      means use device source address
91  *      daddr=NULL      means leave destination address (eg unresolved arp)
92  *
93  *  This is called when the SKB is moving down the stack towards the
94  *  physical devices.
95  */
96 static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
97                                 unsigned short type,
98                                 const void *daddr, const void *saddr,
99                                 unsigned int len)
100 {
101         struct vlan_hdr *vhdr;
102         unsigned int vhdrlen = 0;
103         u16 vlan_tci = 0;
104         int rc;
105
106         if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) {
107                 vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
108
109                 vlan_tci = vlan_dev_info(dev)->vlan_id;
110                 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
111                 vhdr->h_vlan_TCI = htons(vlan_tci);
112
113                 /*
114                  *  Set the protocol type. For a packet of type ETH_P_802_3/2 we
115                  *  put the length in here instead.
116                  */
117                 if (type != ETH_P_802_3 && type != ETH_P_802_2)
118                         vhdr->h_vlan_encapsulated_proto = htons(type);
119                 else
120                         vhdr->h_vlan_encapsulated_proto = htons(len);
121
122                 skb->protocol = htons(ETH_P_8021Q);
123                 type = ETH_P_8021Q;
124                 vhdrlen = VLAN_HLEN;
125         }
126
127         /* Before delegating work to the lower layer, enter our MAC-address */
128         if (saddr == NULL)
129                 saddr = dev->dev_addr;
130
131         /* Now make the underlying real hard header */
132         dev = vlan_dev_info(dev)->real_dev;
133         rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen);
134         if (rc > 0)
135                 rc += vhdrlen;
136         return rc;
137 }
138
139 static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
140                                             struct net_device *dev)
141 {
142         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
143         unsigned int len;
144         int ret;
145
146         /* Handle non-VLAN frames if they are sent to us, for example by DHCP.
147          *
148          * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
149          * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
150          */
151         if (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
152             vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) {
153                 u16 vlan_tci;
154                 vlan_tci = vlan_dev_info(dev)->vlan_id;
155                 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
156                 skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
157         }
158
159         skb_set_dev(skb, vlan_dev_info(dev)->real_dev);
160         len = skb->len;
161         ret = dev_queue_xmit(skb);
162
163         if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
164                 struct vlan_pcpu_stats *stats;
165
166                 stats = this_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats);
167                 u64_stats_update_begin(&stats->syncp);
168                 stats->tx_packets++;
169                 stats->tx_bytes += len;
170                 u64_stats_update_end(&stats->syncp);
171         } else {
172                 this_cpu_inc(vlan_dev_info(dev)->vlan_pcpu_stats->tx_dropped);
173         }
174
175         return ret;
176 }
177
178 static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu)
179 {
180         /* TODO: gotta make sure the underlying layer can handle it,
181          * maybe an IFF_VLAN_CAPABLE flag for devices?
182          */
183         if (vlan_dev_info(dev)->real_dev->mtu < new_mtu)
184                 return -ERANGE;
185
186         dev->mtu = new_mtu;
187
188         return 0;
189 }
190
191 void vlan_dev_set_ingress_priority(const struct net_device *dev,
192                                    u32 skb_prio, u16 vlan_prio)
193 {
194         struct vlan_dev_info *vlan = vlan_dev_info(dev);
195
196         if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio)
197                 vlan->nr_ingress_mappings--;
198         else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio)
199                 vlan->nr_ingress_mappings++;
200
201         vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio;
202 }
203
204 int vlan_dev_set_egress_priority(const struct net_device *dev,
205                                  u32 skb_prio, u16 vlan_prio)
206 {
207         struct vlan_dev_info *vlan = vlan_dev_info(dev);
208         struct vlan_priority_tci_mapping *mp = NULL;
209         struct vlan_priority_tci_mapping *np;
210         u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK;
211
212         /* See if a priority mapping exists.. */
213         mp = vlan->egress_priority_map[skb_prio & 0xF];
214         while (mp) {
215                 if (mp->priority == skb_prio) {
216                         if (mp->vlan_qos && !vlan_qos)
217                                 vlan->nr_egress_mappings--;
218                         else if (!mp->vlan_qos && vlan_qos)
219                                 vlan->nr_egress_mappings++;
220                         mp->vlan_qos = vlan_qos;
221                         return 0;
222                 }
223                 mp = mp->next;
224         }
225
226         /* Create a new mapping then. */
227         mp = vlan->egress_priority_map[skb_prio & 0xF];
228         np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL);
229         if (!np)
230                 return -ENOBUFS;
231
232         np->next = mp;
233         np->priority = skb_prio;
234         np->vlan_qos = vlan_qos;
235         vlan->egress_priority_map[skb_prio & 0xF] = np;
236         if (vlan_qos)
237                 vlan->nr_egress_mappings++;
238         return 0;
239 }
240
241 /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */
242 int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
243 {
244         struct vlan_dev_info *vlan = vlan_dev_info(dev);
245         u32 old_flags = vlan->flags;
246
247         if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
248                      VLAN_FLAG_LOOSE_BINDING))
249                 return -EINVAL;
250
251         vlan->flags = (old_flags & ~mask) | (flags & mask);
252
253         if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) {
254                 if (vlan->flags & VLAN_FLAG_GVRP)
255                         vlan_gvrp_request_join(dev);
256                 else
257                         vlan_gvrp_request_leave(dev);
258         }
259         return 0;
260 }
261
262 void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
263 {
264         strncpy(result, vlan_dev_info(dev)->real_dev->name, 23);
265 }
266
267 static int vlan_dev_open(struct net_device *dev)
268 {
269         struct vlan_dev_info *vlan = vlan_dev_info(dev);
270         struct net_device *real_dev = vlan->real_dev;
271         int err;
272
273         if (!(real_dev->flags & IFF_UP) &&
274             !(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
275                 return -ENETDOWN;
276
277         if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) {
278                 err = dev_uc_add(real_dev, dev->dev_addr);
279                 if (err < 0)
280                         goto out;
281         }
282
283         if (dev->flags & IFF_ALLMULTI) {
284                 err = dev_set_allmulti(real_dev, 1);
285                 if (err < 0)
286                         goto del_unicast;
287         }
288         if (dev->flags & IFF_PROMISC) {
289                 err = dev_set_promiscuity(real_dev, 1);
290                 if (err < 0)
291                         goto clear_allmulti;
292         }
293
294         memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN);
295
296         if (vlan->flags & VLAN_FLAG_GVRP)
297                 vlan_gvrp_request_join(dev);
298
299         if (netif_carrier_ok(real_dev))
300                 netif_carrier_on(dev);
301         return 0;
302
303 clear_allmulti:
304         if (dev->flags & IFF_ALLMULTI)
305                 dev_set_allmulti(real_dev, -1);
306 del_unicast:
307         if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
308                 dev_uc_del(real_dev, dev->dev_addr);
309 out:
310         netif_carrier_off(dev);
311         return err;
312 }
313
314 static int vlan_dev_stop(struct net_device *dev)
315 {
316         struct vlan_dev_info *vlan = vlan_dev_info(dev);
317         struct net_device *real_dev = vlan->real_dev;
318
319         dev_mc_unsync(real_dev, dev);
320         dev_uc_unsync(real_dev, dev);
321         if (dev->flags & IFF_ALLMULTI)
322                 dev_set_allmulti(real_dev, -1);
323         if (dev->flags & IFF_PROMISC)
324                 dev_set_promiscuity(real_dev, -1);
325
326         if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
327                 dev_uc_del(real_dev, dev->dev_addr);
328
329         netif_carrier_off(dev);
330         return 0;
331 }
332
333 static int vlan_dev_set_mac_address(struct net_device *dev, void *p)
334 {
335         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
336         struct sockaddr *addr = p;
337         int err;
338
339         if (!is_valid_ether_addr(addr->sa_data))
340                 return -EADDRNOTAVAIL;
341
342         if (!(dev->flags & IFF_UP))
343                 goto out;
344
345         if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) {
346                 err = dev_uc_add(real_dev, addr->sa_data);
347                 if (err < 0)
348                         return err;
349         }
350
351         if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
352                 dev_uc_del(real_dev, dev->dev_addr);
353
354 out:
355         memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
356         return 0;
357 }
358
359 static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
360 {
361         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
362         const struct net_device_ops *ops = real_dev->netdev_ops;
363         struct ifreq ifrr;
364         int err = -EOPNOTSUPP;
365
366         strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
367         ifrr.ifr_ifru = ifr->ifr_ifru;
368
369         switch (cmd) {
370         case SIOCGMIIPHY:
371         case SIOCGMIIREG:
372         case SIOCSMIIREG:
373                 if (netif_device_present(real_dev) && ops->ndo_do_ioctl)
374                         err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd);
375                 break;
376         }
377
378         if (!err)
379                 ifr->ifr_ifru = ifrr.ifr_ifru;
380
381         return err;
382 }
383
384 static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa)
385 {
386         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
387         const struct net_device_ops *ops = real_dev->netdev_ops;
388         int err = 0;
389
390         if (netif_device_present(real_dev) && ops->ndo_neigh_setup)
391                 err = ops->ndo_neigh_setup(real_dev, pa);
392
393         return err;
394 }
395
396 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
397 static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid,
398                                    struct scatterlist *sgl, unsigned int sgc)
399 {
400         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
401         const struct net_device_ops *ops = real_dev->netdev_ops;
402         int rc = 0;
403
404         if (ops->ndo_fcoe_ddp_setup)
405                 rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc);
406
407         return rc;
408 }
409
410 static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid)
411 {
412         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
413         const struct net_device_ops *ops = real_dev->netdev_ops;
414         int len = 0;
415
416         if (ops->ndo_fcoe_ddp_done)
417                 len = ops->ndo_fcoe_ddp_done(real_dev, xid);
418
419         return len;
420 }
421
422 static int vlan_dev_fcoe_enable(struct net_device *dev)
423 {
424         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
425         const struct net_device_ops *ops = real_dev->netdev_ops;
426         int rc = -EINVAL;
427
428         if (ops->ndo_fcoe_enable)
429                 rc = ops->ndo_fcoe_enable(real_dev);
430         return rc;
431 }
432
433 static int vlan_dev_fcoe_disable(struct net_device *dev)
434 {
435         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
436         const struct net_device_ops *ops = real_dev->netdev_ops;
437         int rc = -EINVAL;
438
439         if (ops->ndo_fcoe_disable)
440                 rc = ops->ndo_fcoe_disable(real_dev);
441         return rc;
442 }
443
444 static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
445 {
446         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
447         const struct net_device_ops *ops = real_dev->netdev_ops;
448         int rc = -EINVAL;
449
450         if (ops->ndo_fcoe_get_wwn)
451                 rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type);
452         return rc;
453 }
454
455 static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid,
456                                     struct scatterlist *sgl, unsigned int sgc)
457 {
458         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
459         const struct net_device_ops *ops = real_dev->netdev_ops;
460         int rc = 0;
461
462         if (ops->ndo_fcoe_ddp_target)
463                 rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc);
464
465         return rc;
466 }
467 #endif
468
469 static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
470 {
471         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
472
473         if (change & IFF_ALLMULTI)
474                 dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
475         if (change & IFF_PROMISC)
476                 dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
477 }
478
479 static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
480 {
481         dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev);
482         dev_uc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev);
483 }
484
485 /*
486  * vlan network devices have devices nesting below it, and are a special
487  * "super class" of normal network devices; split their locks off into a
488  * separate class since they always nest.
489  */
490 static struct lock_class_key vlan_netdev_xmit_lock_key;
491 static struct lock_class_key vlan_netdev_addr_lock_key;
492
493 static void vlan_dev_set_lockdep_one(struct net_device *dev,
494                                      struct netdev_queue *txq,
495                                      void *_subclass)
496 {
497         lockdep_set_class_and_subclass(&txq->_xmit_lock,
498                                        &vlan_netdev_xmit_lock_key,
499                                        *(int *)_subclass);
500 }
501
502 static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass)
503 {
504         lockdep_set_class_and_subclass(&dev->addr_list_lock,
505                                        &vlan_netdev_addr_lock_key,
506                                        subclass);
507         netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass);
508 }
509
510 static const struct header_ops vlan_header_ops = {
511         .create  = vlan_dev_hard_header,
512         .rebuild = vlan_dev_rebuild_header,
513         .parse   = eth_header_parse,
514 };
515
516 static const struct net_device_ops vlan_netdev_ops;
517
518 static int vlan_dev_init(struct net_device *dev)
519 {
520         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
521         int subclass = 0;
522
523         netif_carrier_off(dev);
524
525         /* IFF_BROADCAST|IFF_MULTICAST; ??? */
526         dev->flags  = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
527                                           IFF_MASTER | IFF_SLAVE);
528         dev->iflink = real_dev->ifindex;
529         dev->state  = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
530                                           (1<<__LINK_STATE_DORMANT))) |
531                       (1<<__LINK_STATE_PRESENT);
532
533         dev->hw_features = NETIF_F_ALL_CSUM | NETIF_F_SG |
534                            NETIF_F_FRAGLIST | NETIF_F_ALL_TSO |
535                            NETIF_F_HIGHDMA | NETIF_F_SCTP_CSUM |
536                            NETIF_F_ALL_FCOE;
537
538         dev->features |= real_dev->vlan_features | NETIF_F_LLTX;
539         dev->gso_max_size = real_dev->gso_max_size;
540
541         /* ipv6 shared card related stuff */
542         dev->dev_id = real_dev->dev_id;
543
544         if (is_zero_ether_addr(dev->dev_addr))
545                 memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len);
546         if (is_zero_ether_addr(dev->broadcast))
547                 memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
548
549 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
550         dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
551 #endif
552
553         dev->needed_headroom = real_dev->needed_headroom;
554         if (real_dev->features & NETIF_F_HW_VLAN_TX) {
555                 dev->header_ops      = real_dev->header_ops;
556                 dev->hard_header_len = real_dev->hard_header_len;
557         } else {
558                 dev->header_ops      = &vlan_header_ops;
559                 dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
560         }
561
562         dev->netdev_ops = &vlan_netdev_ops;
563
564         if (is_vlan_dev(real_dev))
565                 subclass = 1;
566
567         vlan_dev_set_lockdep_class(dev, subclass);
568
569         vlan_dev_info(dev)->vlan_pcpu_stats = alloc_percpu(struct vlan_pcpu_stats);
570         if (!vlan_dev_info(dev)->vlan_pcpu_stats)
571                 return -ENOMEM;
572
573         return 0;
574 }
575
576 static void vlan_dev_uninit(struct net_device *dev)
577 {
578         struct vlan_priority_tci_mapping *pm;
579         struct vlan_dev_info *vlan = vlan_dev_info(dev);
580         int i;
581
582         free_percpu(vlan->vlan_pcpu_stats);
583         vlan->vlan_pcpu_stats = NULL;
584         for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
585                 while ((pm = vlan->egress_priority_map[i]) != NULL) {
586                         vlan->egress_priority_map[i] = pm->next;
587                         kfree(pm);
588                 }
589         }
590 }
591
592 static u32 vlan_dev_fix_features(struct net_device *dev, u32 features)
593 {
594         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
595         u32 old_features = features;
596
597         features &= real_dev->features;
598         features &= real_dev->vlan_features;
599
600         features |= old_features & NETIF_F_SOFT_FEATURES;
601
602         if (dev_ethtool_get_rx_csum(real_dev))
603                 features |= NETIF_F_RXCSUM;
604         features |= NETIF_F_LLTX;
605
606         return features;
607 }
608
609 static int vlan_ethtool_get_settings(struct net_device *dev,
610                                      struct ethtool_cmd *cmd)
611 {
612         const struct vlan_dev_info *vlan = vlan_dev_info(dev);
613         return dev_ethtool_get_settings(vlan->real_dev, cmd);
614 }
615
616 static void vlan_ethtool_get_drvinfo(struct net_device *dev,
617                                      struct ethtool_drvinfo *info)
618 {
619         strcpy(info->driver, vlan_fullname);
620         strcpy(info->version, vlan_version);
621         strcpy(info->fw_version, "N/A");
622 }
623
624 static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
625 {
626
627         if (vlan_dev_info(dev)->vlan_pcpu_stats) {
628                 struct vlan_pcpu_stats *p;
629                 u32 rx_errors = 0, tx_dropped = 0;
630                 int i;
631
632                 for_each_possible_cpu(i) {
633                         u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
634                         unsigned int start;
635
636                         p = per_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats, i);
637                         do {
638                                 start = u64_stats_fetch_begin_bh(&p->syncp);
639                                 rxpackets       = p->rx_packets;
640                                 rxbytes         = p->rx_bytes;
641                                 rxmulticast     = p->rx_multicast;
642                                 txpackets       = p->tx_packets;
643                                 txbytes         = p->tx_bytes;
644                         } while (u64_stats_fetch_retry_bh(&p->syncp, start));
645
646                         stats->rx_packets       += rxpackets;
647                         stats->rx_bytes         += rxbytes;
648                         stats->multicast        += rxmulticast;
649                         stats->tx_packets       += txpackets;
650                         stats->tx_bytes         += txbytes;
651                         /* rx_errors & tx_dropped are u32 */
652                         rx_errors       += p->rx_errors;
653                         tx_dropped      += p->tx_dropped;
654                 }
655                 stats->rx_errors  = rx_errors;
656                 stats->tx_dropped = tx_dropped;
657         }
658         return stats;
659 }
660
661 static const struct ethtool_ops vlan_ethtool_ops = {
662         .get_settings           = vlan_ethtool_get_settings,
663         .get_drvinfo            = vlan_ethtool_get_drvinfo,
664         .get_link               = ethtool_op_get_link,
665 };
666
667 static const struct net_device_ops vlan_netdev_ops = {
668         .ndo_change_mtu         = vlan_dev_change_mtu,
669         .ndo_init               = vlan_dev_init,
670         .ndo_uninit             = vlan_dev_uninit,
671         .ndo_open               = vlan_dev_open,
672         .ndo_stop               = vlan_dev_stop,
673         .ndo_start_xmit =  vlan_dev_hard_start_xmit,
674         .ndo_validate_addr      = eth_validate_addr,
675         .ndo_set_mac_address    = vlan_dev_set_mac_address,
676         .ndo_set_rx_mode        = vlan_dev_set_rx_mode,
677         .ndo_change_rx_flags    = vlan_dev_change_rx_flags,
678         .ndo_do_ioctl           = vlan_dev_ioctl,
679         .ndo_neigh_setup        = vlan_dev_neigh_setup,
680         .ndo_get_stats64        = vlan_dev_get_stats64,
681 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
682         .ndo_fcoe_ddp_setup     = vlan_dev_fcoe_ddp_setup,
683         .ndo_fcoe_ddp_done      = vlan_dev_fcoe_ddp_done,
684         .ndo_fcoe_enable        = vlan_dev_fcoe_enable,
685         .ndo_fcoe_disable       = vlan_dev_fcoe_disable,
686         .ndo_fcoe_get_wwn       = vlan_dev_fcoe_get_wwn,
687         .ndo_fcoe_ddp_target    = vlan_dev_fcoe_ddp_target,
688 #endif
689         .ndo_fix_features       = vlan_dev_fix_features,
690 };
691
692 void vlan_setup(struct net_device *dev)
693 {
694         ether_setup(dev);
695
696         dev->priv_flags         |= IFF_802_1Q_VLAN;
697         dev->priv_flags         &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
698         dev->tx_queue_len       = 0;
699
700         dev->netdev_ops         = &vlan_netdev_ops;
701         dev->destructor         = free_netdev;
702         dev->ethtool_ops        = &vlan_ethtool_ops;
703
704         memset(dev->broadcast, 0, ETH_ALEN);
705 }