static u32 vlan_ethtool_get_rx_csum(struct net_device *dev)
{
const struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct net_device *real_dev = vlan->real_dev;
if (real_dev->ethtool_ops == NULL ||
real_dev->ethtool_ops->get_rx_csum == NULL)
return 0;
return real_dev->ethtool_ops->get_rx_csum(real_dev);
}
static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
{
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
const struct net_device_ops *ops = real_dev->netdev_ops;
int rc = -EINVAL;
if (ops->ndo_fcoe_get_wwn)
rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type);
return rc;
}
static int vlan_dev_fcoe_disable(struct net_device *dev)
{
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
const struct net_device_ops *ops = real_dev->netdev_ops;
int rc = -EINVAL;
if (ops->ndo_fcoe_disable)
rc = ops->ndo_fcoe_disable(real_dev);
return rc;
}
/*
* Create the VLAN header for an arbitrary protocol layer
*
* saddr=NULL means use device source address
* daddr=NULL means leave destination address (eg unresolved arp)
*
* This is called when the SKB is moving down the stack towards the
* physical devices.
*/
static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
unsigned short type,
const void *daddr, const void *saddr,
unsigned int len)
{
struct vlan_hdr *vhdr;
unsigned int vhdrlen = 0;
u16 vlan_tci = 0;
int rc;
if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) {
vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
vlan_tci = vlan_dev_info(dev)->vlan_id;
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
vhdr->h_vlan_TCI = htons(vlan_tci);
/*
* Set the protocol type. For a packet of type ETH_P_802_3/2 we
* put the length in here instead.
*/
if (type != ETH_P_802_3 && type != ETH_P_802_2)
vhdr->h_vlan_encapsulated_proto = htons(type);
else
vhdr->h_vlan_encapsulated_proto = htons(len);
skb->protocol = htons(ETH_P_8021Q);
type = ETH_P_8021Q;
vhdrlen = VLAN_HLEN;
}
/* Before delegating work to the lower layer, enter our MAC-address */
if (saddr == NULL)
saddr = dev->dev_addr;
/* Now make the underlying real hard header */
dev = vlan_dev_info(dev)->real_dev;
rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen);
if (rc > 0)
rc += vhdrlen;
return rc;
}
static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
unsigned int len;
int ret;
/* Handle non-VLAN frames if they are sent to us, for example by DHCP.
*
* NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
* OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
*/
if (
#ifdef CONFIG_VLAN_8021Q_DOUBLE_TAG
(vlan_double_tag) ||
#endif
(veth->h_vlan_proto != __constant_htons(ETH_P_8021Q) ||
vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) {
u16 vlan_tci;
vlan_tci = vlan_dev_info(dev)->vlan_id;
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
}
skb->dev = vlan_dev_info(dev)->real_dev;
len = skb->len;
ret = dev_queue_xmit(skb);
if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
struct vlan_pcpu_stats *stats;
stats = this_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats);
u64_stats_update_begin(&stats->syncp);
stats->tx_packets++;
stats->tx_bytes += len;
u64_stats_update_end(&stats->syncp);
} else {
this_cpu_inc(vlan_dev_info(dev)->vlan_pcpu_stats->tx_dropped);
}
return ret;
}
static int vlan_ethtool_get_settings(struct net_device *dev,
struct ethtool_cmd *cmd)
{
const struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct net_device *real_dev = vlan->real_dev;
if (!real_dev->ethtool_ops->get_settings)
return -EOPNOTSUPP;
return real_dev->ethtool_ops->get_settings(real_dev, cmd);
}
static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa)
{
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
const struct net_device_ops *ops = real_dev->netdev_ops;
int err = 0;
if (netif_device_present(real_dev) && ops->ndo_neigh_setup)
err = ops->ndo_neigh_setup(real_dev, pa);
return err;
}
static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
{
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
if (dev->flags & IFF_UP) {
if (change & IFF_ALLMULTI)
dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
if (change & IFF_PROMISC)
dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
}
}
static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid)
{
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
const struct net_device_ops *ops = real_dev->netdev_ops;
int len = 0;
if (ops->ndo_fcoe_ddp_done)
len = ops->ndo_fcoe_ddp_done(real_dev, xid);
return len;
}
static u32 vlan_ethtool_get_flags(struct net_device *dev)
{
const struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct net_device *real_dev = vlan->real_dev;
if (!(real_dev->features & NETIF_F_HW_VLAN_RX) ||
real_dev->ethtool_ops == NULL ||
real_dev->ethtool_ops->get_flags == NULL)
return 0;
return real_dev->ethtool_ops->get_flags(real_dev);
}
int vlan_proc_add_dev(struct net_device *vlandev)
{
struct vlan_dev_info *dev_info = vlan_dev_info(vlandev);
struct vlan_net *vn = net_generic(dev_net(vlandev), vlan_net_id);
dev_info->dent =
proc_create_data(vlandev->name, S_IFREG|S_IRUSR|S_IWUSR,
vn->proc_vlan_dir, &vlandev_fops, vlandev);
if (!dev_info->dent)
return -ENOBUFS;
return 0;
}
static int vlandev_seq_show(struct seq_file *seq, void *offset)
{
struct net_device *vlandev = (struct net_device *) seq->private;
const struct vlan_dev_info *dev_info = vlan_dev_info(vlandev);
struct net_device_stats *stats = &vlandev->stats;
static const char fmt[] = "%30s %12lu\n";
int i;
if (!is_vlan_dev(vlandev))
return 0;
seq_printf(seq,
"%s VID: %d REORDER_HDR: %i dev->priv_flags: %hx\n",
vlandev->name, dev_info->vlan_id,
(int)(dev_info->flags & 1), vlandev->priv_flags);
seq_printf(seq, fmt, "total frames received", stats->rx_packets);
seq_printf(seq, fmt, "total bytes received", stats->rx_bytes);
seq_printf(seq, fmt, "Broadcast/Multicast Rcvd", stats->multicast);
seq_puts(seq, "\n");
seq_printf(seq, fmt, "total frames transmitted", stats->tx_packets);
seq_printf(seq, fmt, "total bytes transmitted", stats->tx_bytes);
seq_printf(seq, fmt, "total headroom inc",
dev_info->cnt_inc_headroom_on_tx);
seq_printf(seq, fmt, "total encap on xmit",
dev_info->cnt_encap_on_xmit);
seq_printf(seq, "Device: %s", dev_info->real_dev->name);
/* now show all PRIORITY mappings relating to this VLAN */
seq_printf(seq, "\nINGRESS priority mappings: "
"0:%u 1:%u 2:%u 3:%u 4:%u 5:%u 6:%u 7:%u\n",
dev_info->ingress_priority_map[0],
dev_info->ingress_priority_map[1],
dev_info->ingress_priority_map[2],
dev_info->ingress_priority_map[3],
dev_info->ingress_priority_map[4],
dev_info->ingress_priority_map[5],
dev_info->ingress_priority_map[6],
dev_info->ingress_priority_map[7]);
seq_printf(seq, "EGRESSS priority Mappings: ");
for (i = 0; i < 16; i++) {
const struct vlan_priority_tci_mapping *mp
= dev_info->egress_priority_map[i];
while (mp) {
seq_printf(seq, "%u:%hu ",
mp->priority, ((mp->vlan_qos >> 13) & 0x7));
mp = mp->next;
}
}
seq_puts(seq, "\n");
return 0;
}
void vlan_dev_set_ingress_priority(const struct net_device *dev,
u32 skb_prio, u16 vlan_prio)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);
if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio)
vlan->nr_ingress_mappings--;
else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio)
vlan->nr_ingress_mappings++;
vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio;
}
static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid,
struct scatterlist *sgl, unsigned int sgc)
{
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
const struct net_device_ops *ops = real_dev->netdev_ops;
int rc = 0;
if (ops->ndo_fcoe_ddp_setup)
rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc);
return rc;
}
static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu)
{
/* TODO: gotta make sure the underlying layer can handle it,
* maybe an IFF_VLAN_CAPABLE flag for devices?
*/
if (vlan_dev_info(dev)->real_dev->mtu < new_mtu)
return -ERANGE;
dev->mtu = new_mtu;
return 0;
}
static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev,
unsigned short type,
const void *daddr, const void *saddr,
unsigned int len)
{
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
if (saddr == NULL)
saddr = dev->dev_addr;
return dev_hard_header(skb, real_dev, type, daddr, saddr, len);
}
static void vlan_dev_uninit(struct net_device *dev)
{
struct vlan_priority_tci_mapping *pm;
struct vlan_dev_info *vlan = vlan_dev_info(dev);
int i;
for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
while ((pm = vlan->egress_priority_map[i]) != NULL) {
vlan->egress_priority_map[i] = pm->next;
kfree(pm);
}
}
}
static struct net_device_stats *vlan_dev_get_stats(struct net_device *dev)
{
struct net_device_stats *stats = &dev->stats;
dev_txq_stats_fold(dev, stats);
if (vlan_dev_info(dev)->vlan_rx_stats) {
struct vlan_rx_stats *p, rx = {0};
int i;
for_each_possible_cpu(i) {
p = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, i);
rx.rx_packets += p->rx_packets;
rx.rx_bytes += p->rx_bytes;
rx.rx_errors += p->rx_errors;
rx.multicast += p->multicast;
}
stats->rx_packets = rx.rx_packets;
stats->rx_bytes = rx.rx_bytes;
stats->rx_errors = rx.rx_errors;
stats->multicast = rx.multicast;
}
return stats;
}
static int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct net_device_stats *stats = &dev->stats;
unsigned short veth_TCI;
/* Construct the second two bytes. This field looks something
* like:
* usr_priority: 3 bits (high bits)
* CFI 1 bit
* VLAN ID 12 bits (low bits)
*/
veth_TCI = vlan_dev_info(dev)->vlan_id;
veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb);
skb = __vlan_hwaccel_put_tag(skb, veth_TCI);
stats->tx_packets++;
stats->tx_bytes += skb->len;
skb->dev = vlan_dev_info(dev)->real_dev;
dev_queue_xmit(skb);
return 0;
}
static int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct net_device_stats *stats = &dev->stats;
u16 vlan_tci;
vlan_tci = vlan_dev_info(dev)->vlan_id;
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
/* Start of modified by f00120964 for qos function 2012-4-2*/
#ifdef CONFIG_DT_QOS
vlan_tci |= (s_dtQosMarkto8021P[(skb->mark & 0x7)] << 13);
#endif
/* End of modified by f00120964 for qos function 2012-4-2*/
skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
stats->tx_packets++;
stats->tx_bytes += skb->len;
skb->dev = vlan_dev_info(dev)->real_dev;
dev_queue_xmit(skb);
return NETDEV_TX_OK;
}
static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
{
if (vlan_dev_info(dev)->vlan_pcpu_stats) {
struct vlan_pcpu_stats *p;
u32 rx_errors = 0, tx_dropped = 0;
int i;
for_each_possible_cpu(i) {
u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
unsigned int start;
p = per_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats, i);
do {
start = u64_stats_fetch_begin_bh(&p->syncp);
rxpackets = p->rx_packets;
rxbytes = p->rx_bytes;
rxmulticast = p->rx_multicast;
txpackets = p->tx_packets;
txbytes = p->tx_bytes;
} while (u64_stats_fetch_retry_bh(&p->syncp, start));
stats->rx_packets += rxpackets;
stats->rx_bytes += rxbytes;
stats->multicast += rxmulticast;
stats->tx_packets += txpackets;
stats->tx_bytes += txbytes;
/* rx_errors & tx_dropped are u32 */
rx_errors += p->rx_errors;
tx_dropped += p->tx_dropped;
}
stats->rx_errors = rx_errors;
stats->tx_dropped = tx_dropped;
}
return stats;
}
static int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct net_device_stats *stats = &dev->stats;
struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
/* Handle non-VLAN frames if they are sent to us, for example by DHCP.
*
* NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
* OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
*/
if (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) {
unsigned int orig_headroom = skb_headroom(skb);
u16 vlan_tci;
vlan_dev_info(dev)->cnt_encap_on_xmit++;
vlan_tci = vlan_dev_info(dev)->vlan_id;
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
skb = __vlan_put_tag(skb, vlan_tci);
if (!skb) {
stats->tx_dropped++;
return NETDEV_TX_OK;
}
if (orig_headroom < VLAN_HLEN)
vlan_dev_info(dev)->cnt_inc_headroom_on_tx++;
}
stats->tx_packets++;
stats->tx_bytes += skb->len;
skb->dev = vlan_dev_info(dev)->real_dev;
dev_queue_xmit(skb);
return NETDEV_TX_OK;
}
static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb)
{
if (vlan_dev_info(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) {
if (skb_cow(skb, skb_headroom(skb)) < 0)
skb = NULL;
if (skb) {
/* Lifted from Gleb's VLAN code... */
memmove(skb->data - ETH_HLEN,
skb->data - VLAN_ETH_HLEN, 12);
skb->mac_header += VLAN_HLEN;
}
}
return skb;
}
static int vlan_dev_stop(struct net_device *dev)
{
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
dev_mc_unsync(real_dev, dev);
dev_unicast_unsync(real_dev, dev);
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(real_dev, -1);
if (dev->flags & IFF_PROMISC)
dev_set_promiscuity(real_dev, -1);
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
dev_unicast_delete(real_dev, dev->dev_addr, dev->addr_len);
return 0;
}
static u32 vlan_dev_fix_features(struct net_device *dev, u32 features)
{
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
u32 old_features = features;
features &= real_dev->features;
features &= real_dev->vlan_features;
features |= old_features & NETIF_F_SOFT_FEATURES;
if (dev_ethtool_get_rx_csum(real_dev))
features |= NETIF_F_RXCSUM;
features |= NETIF_F_LLTX;
return features;
}
static inline u16
vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb)
{
struct vlan_priority_tci_mapping *mp;
mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)];
while (mp) {
if (mp->priority == skb->priority) {
return mp->vlan_qos; /* This should already be shifted
* to mask correctly with the
* VLAN's TCI */
}
mp = mp->next;
}
return 0;
}
bool vlan_hwaccel_do_receive(struct sk_buff **skbp)
{
struct sk_buff *skb = *skbp;
u16 vlan_id = skb->vlan_tci & VLAN_VID_MASK;
struct net_device *vlan_dev;
struct vlan_pcpu_stats *rx_stats;
vlan_dev = vlan_find_dev(skb->dev, vlan_id);
if (!vlan_dev) {
if (vlan_id)
skb->pkt_type = PACKET_OTHERHOST;
return false;
}
skb = *skbp = skb_share_check(skb, GFP_ATOMIC);
if (unlikely(!skb))
return false;
skb->dev = vlan_dev;
skb->priority = vlan_get_ingress_priority(vlan_dev, skb->vlan_tci);
skb->vlan_tci = 0;
rx_stats = this_cpu_ptr(vlan_dev_info(vlan_dev)->vlan_pcpu_stats);
u64_stats_update_begin(&rx_stats->syncp);
rx_stats->rx_packets++;
rx_stats->rx_bytes += skb->len;
switch (skb->pkt_type) {
case PACKET_BROADCAST:
break;
case PACKET_MULTICAST:
rx_stats->rx_multicast++;
break;
case PACKET_OTHERHOST:
/* Our lower layer thinks this is not local, let's make sure.
* This allows the VLAN to have a different MAC than the
* underlying device, and still route correctly. */
if (!compare_ether_addr(eth_hdr(skb)->h_dest,
vlan_dev->dev_addr))
skb->pkt_type = PACKET_HOST;
break;
}
u64_stats_update_end(&rx_stats->syncp);
return true;
}
void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct net_device *real_dev = vlan->real_dev;
const struct net_device_ops *ops = real_dev->netdev_ops;
struct vlan_group *grp;
u16 vlan_id = vlan->vlan_id;
ASSERT_RTNL();
grp = rtnl_dereference(real_dev->vlgrp);
BUG_ON(!grp);
/* Take it out of our own structures, but be sure to interlock with
* HW accelerating devices or SW vlan input packet processing if
* VLAN is not 0 (leave it there for 802.1p).
*/
if (vlan_id && (real_dev->features & NETIF_F_HW_VLAN_FILTER))
ops->ndo_vlan_rx_kill_vid(real_dev, vlan_id);
grp->nr_vlans--;
if (vlan->flags & VLAN_FLAG_GVRP)
vlan_gvrp_request_leave(dev);
vlan_group_set_device(grp, vlan_id, NULL);
/* Because unregister_netdevice_queue() makes sure at least one rcu
* grace period is respected before device freeing,
* we dont need to call synchronize_net() here.
*/
unregister_netdevice_queue(dev, head);
/* If the group is now empty, kill off the group. */
if (grp->nr_vlans == 0) {
vlan_gvrp_uninit_applicant(real_dev);
rcu_assign_pointer(real_dev->vlgrp, NULL);
if (ops->ndo_vlan_rx_register)
ops->ndo_vlan_rx_register(real_dev, NULL);
/* Free the group, after all cpu's are done. */
call_rcu(&grp->rcu, vlan_rcu_free);
}
/* Get rid of the vlan's reference to real_dev */
dev_put(real_dev);
}
static int vlan_dev_open(struct net_device *dev)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct net_device *real_dev = vlan->real_dev;
int err;
if (!(real_dev->flags & IFF_UP) &&
!(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
return -ENETDOWN;
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) {
err = dev_uc_add(real_dev, dev->dev_addr);
if (err < 0)
goto out;
}
if (dev->flags & IFF_ALLMULTI) {
err = dev_set_allmulti(real_dev, 1);
if (err < 0)
goto del_unicast;
}
if (dev->flags & IFF_PROMISC) {
err = dev_set_promiscuity(real_dev, 1);
if (err < 0)
goto clear_allmulti;
}
memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN);
if (vlan->flags & VLAN_FLAG_GVRP)
vlan_gvrp_request_join(dev);
if (netif_carrier_ok(real_dev))
netif_carrier_on(dev);
return 0;
clear_allmulti:
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(real_dev, -1);
del_unicast:
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
dev_uc_del(real_dev, dev->dev_addr);
out:
netif_carrier_off(dev);
return err;
}
static int vlan_dev_init(struct net_device *dev)
{
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
int subclass = 0;
netif_carrier_off(dev);
/* IFF_BROADCAST|IFF_MULTICAST; ??? */
dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI);
dev->iflink = real_dev->ifindex;
dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
(1<<__LINK_STATE_DORMANT))) |
(1<<__LINK_STATE_PRESENT);
dev->features |= real_dev->features & real_dev->vlan_features;
dev->gso_max_size = real_dev->gso_max_size;
/* ipv6 shared card related stuff */
dev->dev_id = real_dev->dev_id;
if (is_zero_ether_addr(dev->dev_addr))
memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len);
if (is_zero_ether_addr(dev->broadcast))
memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
#endif
if (real_dev->features & NETIF_F_HW_VLAN_TX) {
dev->header_ops = real_dev->header_ops;
dev->hard_header_len = real_dev->hard_header_len;
dev->netdev_ops = &vlan_netdev_accel_ops;
} else {
dev->header_ops = &vlan_header_ops;
dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
dev->netdev_ops = &vlan_netdev_ops;
}
netdev_resync_ops(dev);
if (is_vlan_dev(real_dev))
subclass = 1;
vlan_dev_set_lockdep_class(dev, subclass);
return 0;
}
