1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Ethernet-type device handling.
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
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.
18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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>
32 #include <linux/if_vlan.h>
33 #include <linux/netpoll.h>
36 * Create the VLAN header for an arbitrary protocol layer
38 * saddr=NULL means use device source address
39 * daddr=NULL means leave destination address (eg unresolved arp)
41 * This is called when the SKB is moving down the stack towards the
44 static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
46 const void *daddr, const void *saddr,
49 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
50 struct vlan_hdr *vhdr;
51 unsigned int vhdrlen = 0;
55 if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) {
56 vhdr = skb_push(skb, VLAN_HLEN);
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);
63 * Set the protocol type. For a packet of type ETH_P_802_3/2 we
64 * put the length in here instead.
66 if (type != ETH_P_802_3 && type != ETH_P_802_2)
67 vhdr->h_vlan_encapsulated_proto = htons(type);
69 vhdr->h_vlan_encapsulated_proto = htons(len);
71 skb->protocol = vlan->vlan_proto;
72 type = ntohs(vlan->vlan_proto);
76 /* Before delegating work to the lower layer, enter our MAC-address */
78 saddr = dev->dev_addr;
80 /* Now make the underlying real hard header */
82 rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen);
88 static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb)
90 #ifdef CONFIG_NET_POLL_CONTROLLER
92 netpoll_send_skb(vlan->netpoll, skb);
99 static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
100 struct net_device *dev)
102 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
103 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
107 /* Handle non-VLAN frames if they are sent to us, for example by DHCP.
109 * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
110 * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
112 if (vlan->flags & VLAN_FLAG_REORDER_HDR ||
113 veth->h_vlan_proto != vlan->vlan_proto) {
115 vlan_tci = vlan->vlan_id;
116 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority);
117 __vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci);
120 skb->dev = vlan->real_dev;
122 if (unlikely(netpoll_tx_running(dev)))
123 return vlan_netpoll_send_skb(vlan, skb);
125 ret = dev_queue_xmit(skb);
127 if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
128 struct vlan_pcpu_stats *stats;
130 stats = this_cpu_ptr(vlan->vlan_pcpu_stats);
131 u64_stats_update_begin(&stats->syncp);
133 stats->tx_bytes += len;
134 u64_stats_update_end(&stats->syncp);
136 this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped);
142 static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu)
144 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
145 unsigned int max_mtu = real_dev->mtu;
147 if (netif_reduces_vlan_mtu(real_dev))
148 max_mtu -= VLAN_HLEN;
149 if (max_mtu < new_mtu)
157 void vlan_dev_set_ingress_priority(const struct net_device *dev,
158 u32 skb_prio, u16 vlan_prio)
160 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
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++;
167 vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio;
170 int vlan_dev_set_egress_priority(const struct net_device *dev,
171 u32 skb_prio, u16 vlan_prio)
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;
178 /* See if a priority mapping exists.. */
179 mp = vlan->egress_priority_map[skb_prio & 0xF];
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;
192 /* Create a new mapping then. */
193 mp = vlan->egress_priority_map[skb_prio & 0xF];
194 np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL);
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()
206 vlan->egress_priority_map[skb_prio & 0xF] = np;
208 vlan->nr_egress_mappings++;
212 /* Flags are defined in the vlan_flags enum in
213 * include/uapi/linux/if_vlan.h file.
215 int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
217 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
218 u32 old_flags = vlan->flags;
220 if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
221 VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP |
222 VLAN_FLAG_BRIDGE_BINDING))
225 vlan->flags = (old_flags & ~mask) | (flags & mask);
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);
231 vlan_gvrp_request_leave(dev);
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);
238 vlan_mvrp_request_leave(dev);
243 void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
245 strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23);
248 bool vlan_dev_inherit_address(struct net_device *dev,
249 struct net_device *real_dev)
251 if (dev->addr_assign_type != NET_ADDR_STOLEN)
254 ether_addr_copy(dev->dev_addr, real_dev->dev_addr);
255 call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
259 static int vlan_dev_open(struct net_device *dev)
261 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
262 struct net_device *real_dev = vlan->real_dev;
265 if (!(real_dev->flags & IFF_UP) &&
266 !(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
269 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr) &&
270 !vlan_dev_inherit_address(dev, real_dev)) {
271 err = dev_uc_add(real_dev, dev->dev_addr);
276 if (dev->flags & IFF_ALLMULTI) {
277 err = dev_set_allmulti(real_dev, 1);
281 if (dev->flags & IFF_PROMISC) {
282 err = dev_set_promiscuity(real_dev, 1);
287 ether_addr_copy(vlan->real_dev_addr, real_dev->dev_addr);
289 if (vlan->flags & VLAN_FLAG_GVRP)
290 vlan_gvrp_request_join(dev);
292 if (vlan->flags & VLAN_FLAG_MVRP)
293 vlan_mvrp_request_join(dev);
295 if (netif_carrier_ok(real_dev) &&
296 !(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
297 netif_carrier_on(dev);
301 if (dev->flags & IFF_ALLMULTI)
302 dev_set_allmulti(real_dev, -1);
304 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
305 dev_uc_del(real_dev, dev->dev_addr);
307 netif_carrier_off(dev);
311 static int vlan_dev_stop(struct net_device *dev)
313 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
314 struct net_device *real_dev = vlan->real_dev;
316 dev_mc_unsync(real_dev, dev);
317 dev_uc_unsync(real_dev, dev);
318 if (dev->flags & IFF_ALLMULTI)
319 dev_set_allmulti(real_dev, -1);
320 if (dev->flags & IFF_PROMISC)
321 dev_set_promiscuity(real_dev, -1);
323 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
324 dev_uc_del(real_dev, dev->dev_addr);
326 if (!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
327 netif_carrier_off(dev);
331 static int vlan_dev_set_mac_address(struct net_device *dev, void *p)
333 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
334 struct sockaddr *addr = p;
337 if (!is_valid_ether_addr(addr->sa_data))
338 return -EADDRNOTAVAIL;
340 if (!(dev->flags & IFF_UP))
343 if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) {
344 err = dev_uc_add(real_dev, addr->sa_data);
349 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
350 dev_uc_del(real_dev, dev->dev_addr);
353 ether_addr_copy(dev->dev_addr, addr->sa_data);
357 static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
359 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
360 const struct net_device_ops *ops = real_dev->netdev_ops;
362 int err = -EOPNOTSUPP;
364 strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
365 ifrr.ifr_ifru = ifr->ifr_ifru;
369 if (!net_eq(dev_net(dev), dev_net(real_dev)))
376 if (netif_device_present(real_dev) && ops->ndo_do_ioctl)
377 err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd);
382 ifr->ifr_ifru = ifrr.ifr_ifru;
387 static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa)
389 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
390 const struct net_device_ops *ops = real_dev->netdev_ops;
393 if (netif_device_present(real_dev) && ops->ndo_neigh_setup)
394 err = ops->ndo_neigh_setup(real_dev, pa);
399 #if IS_ENABLED(CONFIG_FCOE)
400 static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid,
401 struct scatterlist *sgl, unsigned int sgc)
403 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
404 const struct net_device_ops *ops = real_dev->netdev_ops;
407 if (ops->ndo_fcoe_ddp_setup)
408 rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc);
413 static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid)
415 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
416 const struct net_device_ops *ops = real_dev->netdev_ops;
419 if (ops->ndo_fcoe_ddp_done)
420 len = ops->ndo_fcoe_ddp_done(real_dev, xid);
425 static int vlan_dev_fcoe_enable(struct net_device *dev)
427 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
428 const struct net_device_ops *ops = real_dev->netdev_ops;
431 if (ops->ndo_fcoe_enable)
432 rc = ops->ndo_fcoe_enable(real_dev);
436 static int vlan_dev_fcoe_disable(struct net_device *dev)
438 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
439 const struct net_device_ops *ops = real_dev->netdev_ops;
442 if (ops->ndo_fcoe_disable)
443 rc = ops->ndo_fcoe_disable(real_dev);
447 static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid,
448 struct scatterlist *sgl, unsigned int sgc)
450 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
451 const struct net_device_ops *ops = real_dev->netdev_ops;
454 if (ops->ndo_fcoe_ddp_target)
455 rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc);
461 #ifdef NETDEV_FCOE_WWNN
462 static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
464 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
465 const struct net_device_ops *ops = real_dev->netdev_ops;
468 if (ops->ndo_fcoe_get_wwn)
469 rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type);
474 static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
476 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
478 if (dev->flags & IFF_UP) {
479 if (change & IFF_ALLMULTI)
480 dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
481 if (change & IFF_PROMISC)
482 dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
486 static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
488 dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
489 dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
492 static const struct header_ops vlan_header_ops = {
493 .create = vlan_dev_hard_header,
494 .parse = eth_header_parse,
497 static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev,
499 const void *daddr, const void *saddr,
502 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
503 struct net_device *real_dev = vlan->real_dev;
506 saddr = dev->dev_addr;
508 return dev_hard_header(skb, real_dev, type, daddr, saddr, len);
511 static const struct header_ops vlan_passthru_header_ops = {
512 .create = vlan_passthru_hard_header,
513 .parse = eth_header_parse,
516 static struct device_type vlan_type = {
520 static const struct net_device_ops vlan_netdev_ops;
522 static int vlan_dev_init(struct net_device *dev)
524 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
525 struct net_device *real_dev = vlan->real_dev;
527 netif_carrier_off(dev);
529 /* IFF_BROADCAST|IFF_MULTICAST; ??? */
530 dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
531 IFF_MASTER | IFF_SLAVE);
532 dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
533 (1<<__LINK_STATE_DORMANT))) |
534 (1<<__LINK_STATE_PRESENT);
536 if (vlan->flags & VLAN_FLAG_BRIDGE_BINDING)
537 dev->state |= (1 << __LINK_STATE_NOCARRIER);
539 dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG |
540 NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE |
541 NETIF_F_GSO_ENCAP_ALL |
542 NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC |
545 dev->features |= dev->hw_features | NETIF_F_LLTX;
546 dev->gso_max_size = real_dev->gso_max_size;
547 dev->gso_max_segs = real_dev->gso_max_segs;
548 if (dev->features & NETIF_F_VLAN_FEATURES)
549 netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n");
551 dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE;
552 dev->hw_enc_features = vlan_tnl_features(real_dev);
553 dev->mpls_features = real_dev->mpls_features;
555 /* ipv6 shared card related stuff */
556 dev->dev_id = real_dev->dev_id;
558 if (is_zero_ether_addr(dev->dev_addr)) {
559 ether_addr_copy(dev->dev_addr, real_dev->dev_addr);
560 dev->addr_assign_type = NET_ADDR_STOLEN;
562 if (is_zero_ether_addr(dev->broadcast))
563 memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
565 #if IS_ENABLED(CONFIG_FCOE)
566 dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
569 dev->needed_headroom = real_dev->needed_headroom;
570 if (vlan_hw_offload_capable(real_dev->features, vlan->vlan_proto)) {
571 dev->header_ops = &vlan_passthru_header_ops;
572 dev->hard_header_len = real_dev->hard_header_len;
574 dev->header_ops = &vlan_header_ops;
575 dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
578 dev->netdev_ops = &vlan_netdev_ops;
580 SET_NETDEV_DEVTYPE(dev, &vlan_type);
582 vlan->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
583 if (!vlan->vlan_pcpu_stats)
586 /* Get vlan's reference to real_dev */
592 /* Note: this function might be called multiple times for the same device. */
593 void vlan_dev_uninit(struct net_device *dev)
595 struct vlan_priority_tci_mapping *pm;
596 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
599 for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
600 while ((pm = vlan->egress_priority_map[i]) != NULL) {
601 vlan->egress_priority_map[i] = pm->next;
607 static netdev_features_t vlan_dev_fix_features(struct net_device *dev,
608 netdev_features_t features)
610 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
611 netdev_features_t old_features = features;
612 netdev_features_t lower_features;
614 lower_features = netdev_intersect_features((real_dev->vlan_features |
618 /* Add HW_CSUM setting to preserve user ability to control
619 * checksum offload on the vlan device.
621 if (lower_features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
622 lower_features |= NETIF_F_HW_CSUM;
623 features = netdev_intersect_features(features, lower_features);
624 features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE);
625 features |= NETIF_F_LLTX;
630 static int vlan_ethtool_get_link_ksettings(struct net_device *dev,
631 struct ethtool_link_ksettings *cmd)
633 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
635 return __ethtool_get_link_ksettings(vlan->real_dev, cmd);
638 static void vlan_ethtool_get_drvinfo(struct net_device *dev,
639 struct ethtool_drvinfo *info)
641 strlcpy(info->driver, vlan_fullname, sizeof(info->driver));
642 strlcpy(info->version, vlan_version, sizeof(info->version));
643 strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
646 static int vlan_ethtool_get_ts_info(struct net_device *dev,
647 struct ethtool_ts_info *info)
649 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
650 const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops;
651 struct phy_device *phydev = vlan->real_dev->phydev;
653 if (phydev && phydev->drv && phydev->drv->ts_info) {
654 return phydev->drv->ts_info(phydev, info);
655 } else if (ops->get_ts_info) {
656 return ops->get_ts_info(vlan->real_dev, info);
658 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
659 SOF_TIMESTAMPING_SOFTWARE;
660 info->phc_index = -1;
666 static void vlan_dev_get_stats64(struct net_device *dev,
667 struct rtnl_link_stats64 *stats)
669 struct vlan_pcpu_stats *p;
670 u32 rx_errors = 0, tx_dropped = 0;
673 for_each_possible_cpu(i) {
674 u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
677 p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i);
679 start = u64_stats_fetch_begin_irq(&p->syncp);
680 rxpackets = p->rx_packets;
681 rxbytes = p->rx_bytes;
682 rxmulticast = p->rx_multicast;
683 txpackets = p->tx_packets;
684 txbytes = p->tx_bytes;
685 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
687 stats->rx_packets += rxpackets;
688 stats->rx_bytes += rxbytes;
689 stats->multicast += rxmulticast;
690 stats->tx_packets += txpackets;
691 stats->tx_bytes += txbytes;
692 /* rx_errors & tx_dropped are u32 */
693 rx_errors += p->rx_errors;
694 tx_dropped += p->tx_dropped;
696 stats->rx_errors = rx_errors;
697 stats->tx_dropped = tx_dropped;
700 #ifdef CONFIG_NET_POLL_CONTROLLER
701 static void vlan_dev_poll_controller(struct net_device *dev)
706 static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo)
708 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
709 struct net_device *real_dev = vlan->real_dev;
710 struct netpoll *netpoll;
713 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
718 err = __netpoll_setup(netpoll, real_dev);
724 vlan->netpoll = netpoll;
730 static void vlan_dev_netpoll_cleanup(struct net_device *dev)
732 struct vlan_dev_priv *vlan= vlan_dev_priv(dev);
733 struct netpoll *netpoll = vlan->netpoll;
738 vlan->netpoll = NULL;
739 __netpoll_free(netpoll);
741 #endif /* CONFIG_NET_POLL_CONTROLLER */
743 static int vlan_dev_get_iflink(const struct net_device *dev)
745 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
747 return real_dev->ifindex;
750 static const struct ethtool_ops vlan_ethtool_ops = {
751 .get_link_ksettings = vlan_ethtool_get_link_ksettings,
752 .get_drvinfo = vlan_ethtool_get_drvinfo,
753 .get_link = ethtool_op_get_link,
754 .get_ts_info = vlan_ethtool_get_ts_info,
757 static const struct net_device_ops vlan_netdev_ops = {
758 .ndo_change_mtu = vlan_dev_change_mtu,
759 .ndo_init = vlan_dev_init,
760 .ndo_uninit = vlan_dev_uninit,
761 .ndo_open = vlan_dev_open,
762 .ndo_stop = vlan_dev_stop,
763 .ndo_start_xmit = vlan_dev_hard_start_xmit,
764 .ndo_validate_addr = eth_validate_addr,
765 .ndo_set_mac_address = vlan_dev_set_mac_address,
766 .ndo_set_rx_mode = vlan_dev_set_rx_mode,
767 .ndo_change_rx_flags = vlan_dev_change_rx_flags,
768 .ndo_do_ioctl = vlan_dev_ioctl,
769 .ndo_neigh_setup = vlan_dev_neigh_setup,
770 .ndo_get_stats64 = vlan_dev_get_stats64,
771 #if IS_ENABLED(CONFIG_FCOE)
772 .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
773 .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
774 .ndo_fcoe_enable = vlan_dev_fcoe_enable,
775 .ndo_fcoe_disable = vlan_dev_fcoe_disable,
776 .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target,
778 #ifdef NETDEV_FCOE_WWNN
779 .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
781 #ifdef CONFIG_NET_POLL_CONTROLLER
782 .ndo_poll_controller = vlan_dev_poll_controller,
783 .ndo_netpoll_setup = vlan_dev_netpoll_setup,
784 .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup,
786 .ndo_fix_features = vlan_dev_fix_features,
787 .ndo_get_iflink = vlan_dev_get_iflink,
790 static void vlan_dev_free(struct net_device *dev)
792 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
794 free_percpu(vlan->vlan_pcpu_stats);
795 vlan->vlan_pcpu_stats = NULL;
797 /* Get rid of the vlan's reference to real_dev */
798 dev_put(vlan->real_dev);
801 void vlan_setup(struct net_device *dev)
805 dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE;
806 dev->priv_flags |= IFF_UNICAST_FLT;
807 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
810 dev->netdev_ops = &vlan_netdev_ops;
811 dev->needs_free_netdev = true;
812 dev->priv_destructor = vlan_dev_free;
813 dev->ethtool_ops = &vlan_ethtool_ops;
816 dev->max_mtu = ETH_MAX_MTU;
818 eth_zero_addr(dev->broadcast);