cregit-Linux how code gets into the kernel

Release 4.8 net/8021q/vlan_dev.c

Directory: net/8021q
/* -*- linux-c -*-
 * INET         802.1Q VLAN
 *              Ethernet-type device handling.
 *
 * Authors:     Ben Greear <greearb@candelatech.com>
 *              Please send support related email to: netdev@vger.kernel.org
 *              VLAN Home Page: http://www.candelatech.com/~greear/vlan.html
 *
 * Fixes:       Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com>
 *                - reset skb->pkt_type on incoming packets when MAC was changed
 *                - see that changed MAC is saddr for outgoing packets
 *              Oct 20, 2001:  Ard van Breeman:
 *                - Fix MC-list, finally.
 *                - Flush MC-list on VLAN destroy.
 *
 *
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              as published by the Free Software Foundation; either version
 *              2 of the License, or (at your option) any later version.
 */


#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/net_tstamp.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <net/arp.h>
#include <net/switchdev.h>

#include "vlan.h"
#include "vlanproc.h"
#include <linux/if_vlan.h>
#include <linux/netpoll.h>

/*
 *      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_dev_priv *vlan = vlan_dev_priv(dev); struct vlan_hdr *vhdr; unsigned int vhdrlen = 0; u16 vlan_tci = 0; int rc; if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) { vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); vlan_tci = vlan->vlan_id; vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority); 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 = vlan->vlan_proto; type = ntohs(vlan->vlan_proto); 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->real_dev; rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); if (rc > 0) rc += vhdrlen; return rc; }

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linus torvaldslinus torvalds15470.32%17.14%
patrick mchardypatrick mchardy4621.00%642.86%
jerome borsboomjerome borsboom52.28%17.14%
octavian purdilaoctavian purdila52.28%17.14%
wang sheng-huiwang sheng-hui31.37%17.14%
stephen hemmingerstephen hemminger31.37%214.29%
eyal perryeyal perry20.91%17.14%
david s. millerdavid s. miller10.46%17.14%
Total219100.00%14100.00%


static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb) { #ifdef CONFIG_NET_POLL_CONTROLLER if (vlan->netpoll) netpoll_send_skb(vlan->netpoll, skb); #else BUG(); #endif return NETDEV_TX_OK; }

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americo wangamerico wang45100.00%1100.00%
Total45100.00%1100.00%


static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct vlan_dev_priv *vlan = vlan_dev_priv(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 (veth->h_vlan_proto != vlan->vlan_proto || vlan->flags & VLAN_FLAG_REORDER_HDR) { u16 vlan_tci; vlan_tci = vlan->vlan_id; vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority); __vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci); } skb->dev = vlan->real_dev; len = skb->len; if (unlikely(netpoll_tx_running(dev))) return vlan_netpoll_send_skb(vlan, skb); 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->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->vlan_pcpu_stats->tx_dropped); } return ret; }

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eric dumazeteric dumazet8038.28%314.29%
linus torvaldslinus torvalds5425.84%14.76%
americo wangamerico wang209.57%14.76%
patrick mchardypatrick mchardy146.70%523.81%
benjamin lahaisebenjamin lahaise136.22%14.76%
david s. millerdavid s. miller136.22%419.05%
joonwoo parkjoonwoo park52.39%14.76%
shmulik henshmulik hen52.39%14.76%
eyal perryeyal perry20.96%14.76%
john fastabendjohn fastabend10.48%14.76%
wei yongjunwei yongjun10.48%14.76%
stephen hemmingerstephen hemminger10.48%14.76%
Total209100.00%21100.00%


static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) { struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; unsigned int max_mtu = real_dev->mtu; if (netif_reduces_vlan_mtu(real_dev)) max_mtu -= VLAN_HLEN; if (max_mtu < new_mtu) return -ERANGE; dev->mtu = new_mtu; return 0; }

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paolo abenipaolo abeni2640.62%116.67%
linus torvaldslinus torvalds2031.25%116.67%
david s. millerdavid s. miller1523.44%116.67%
john w. linvillejohn w. linville11.56%116.67%
patrick mchardypatrick mchardy11.56%116.67%
jiri pirkojiri pirko11.56%116.67%
Total64100.00%6100.00%


void vlan_dev_set_ingress_priority(const struct net_device *dev, u32 skb_prio, u16 vlan_prio) { struct vlan_dev_priv *vlan = vlan_dev_priv(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; }

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patrick mchardypatrick mchardy5267.53%360.00%
linus torvaldslinus torvalds2329.87%120.00%
jiri pirkojiri pirko22.60%120.00%
Total77100.00%5100.00%


int vlan_dev_set_egress_priority(const struct net_device *dev, u32 skb_prio, u16 vlan_prio) { struct vlan_dev_priv *vlan = vlan_dev_priv(dev); struct vlan_priority_tci_mapping *mp = NULL; struct vlan_priority_tci_mapping *np; u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; /* See if a priority mapping exists.. */ mp = vlan->egress_priority_map[skb_prio & 0xF]; while (mp) { if (mp->priority == skb_prio) { if (mp->vlan_qos && !vlan_qos) vlan->nr_egress_mappings--; else if (!mp->vlan_qos && vlan_qos) vlan->nr_egress_mappings++; mp->vlan_qos = vlan_qos; return 0; } mp = mp->next; } /* Create a new mapping then. */ mp = vlan->egress_priority_map[skb_prio & 0xF]; np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); if (!np) return -ENOBUFS; np->next = mp; np->priority = skb_prio; np->vlan_qos = vlan_qos; /* Before inserting this element in hash table, make sure all its fields * are committed to memory. * coupled with smp_rmb() in vlan_dev_get_egress_qos_mask() */ smp_wmb(); vlan->egress_priority_map[skb_prio & 0xF] = np; if (vlan_qos) vlan->nr_egress_mappings++; return 0; }

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linus torvaldslinus torvalds11657.71%111.11%
patrick mchardypatrick mchardy7135.32%333.33%
bjorn anderssonbjorn andersson62.99%111.11%
eric dumazeteric dumazet52.49%222.22%
jiri pirkojiri pirko21.00%111.11%
david s. millerdavid s. miller10.50%111.11%
Total201100.00%9100.00%

/* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */
int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) { struct vlan_dev_priv *vlan = vlan_dev_priv(dev); u32 old_flags = vlan->flags; if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP)) return -EINVAL; vlan->flags = (old_flags & ~mask) | (flags & mask); if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { if (vlan->flags & VLAN_FLAG_GVRP) vlan_gvrp_request_join(dev); else vlan_gvrp_request_leave(dev); } if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) { if (vlan->flags & VLAN_FLAG_MVRP) vlan_mvrp_request_join(dev); else vlan_mvrp_request_leave(dev); } return 0; }

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patrick mchardypatrick mchardy8758.39%562.50%
david warddavid ward4026.85%112.50%
linus torvaldslinus torvalds2013.42%112.50%
jiri pirkojiri pirko21.34%112.50%
Total149100.00%8100.00%


void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) { strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23); }

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ben greearben greear2683.87%133.33%
patrick mchardypatrick mchardy412.90%133.33%
jiri pirkojiri pirko13.23%133.33%
Total31100.00%3100.00%


bool vlan_dev_inherit_address(struct net_device *dev, struct net_device *real_dev) { if (dev->addr_assign_type != NET_ADDR_STOLEN) return false; ether_addr_copy(dev->dev_addr, real_dev->dev_addr); call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); return true; }

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mike manningmike manning47100.00%1100.00%
Total47100.00%1100.00%


static int vlan_dev_open(struct net_device *dev) { struct vlan_dev_priv *vlan = vlan_dev_priv(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 (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr) && !vlan_dev_inherit_address(dev, real_dev)) { 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; } ether_addr_copy(vlan->real_dev_addr, real_dev->dev_addr); if (vlan->flags & VLAN_FLAG_GVRP) vlan_gvrp_request_join(dev); if (vlan->flags & VLAN_FLAG_MVRP) vlan_mvrp_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 (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) dev_uc_del(real_dev, dev->dev_addr); out: netif_carrier_off(dev); return err; }

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patrick mchardypatrick mchardy10339.31%533.33%
wang chenwang chen8432.06%16.67%
david s. millerdavid s. miller2810.69%16.67%
david warddavid ward134.96%16.67%
jay vosburghjay vosburgh103.82%16.67%
mike manningmike manning83.05%16.67%
phil oesterphil oester72.67%16.67%
joe perchesjoe perches51.91%213.33%
jiri pirkojiri pirko41.53%213.33%
Total262100.00%15100.00%


static int vlan_dev_stop(struct net_device *dev) { struct vlan_dev_priv *vlan = vlan_dev_priv(dev); struct net_device *real_dev = vlan->real_dev; dev_mc_unsync(real_dev, dev); dev_uc_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 (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) dev_uc_del(real_dev, dev->dev_addr); netif_carrier_off(dev); return 0; }

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patrick mchardypatrick mchardy7368.22%545.45%
david s. millerdavid s. miller1715.89%19.09%
chris leechchris leech65.61%19.09%
jay vosburghjay vosburgh54.67%19.09%
jiri pirkojiri pirko43.74%218.18%
joe perchesjoe perches21.87%19.09%
Total107100.00%11100.00%


static int vlan_dev_set_mac_address(struct net_device *dev, void *p) { struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; struct sockaddr *addr = p; int err; if (!is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL; if (!(dev->flags & IFF_UP)) goto out; if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) { err = dev_uc_add(real_dev, addr->sa_data); if (err < 0) return err; } if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) dev_uc_del(real_dev, dev->dev_addr); out: ether_addr_copy(dev->dev_addr, addr->sa_data); return 0; }

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patrick mchardypatrick mchardy13294.29%233.33%
joe perchesjoe perches53.57%233.33%
jiri pirkojiri pirko32.14%233.33%
Total140100.00%6100.00%


static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; const struct net_device_ops *ops = real_dev->netdev_ops; struct ifreq ifrr; int err = -EOPNOTSUPP; strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); ifrr.ifr_ifru = ifr->ifr_ifru; switch (cmd) { case SIOCGMIIPHY: case SIOCGMIIREG: case SIOCSMIIREG: case SIOCSHWTSTAMP: case SIOCGHWTSTAMP: if (netif_device_present(real_dev) && ops->ndo_do_ioctl) err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); break; } if (!err) ifr->ifr_ifru = ifrr.ifr_ifru; return err; }

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stephen hemmingerstephen hemminger12794.07%350.00%
stefan sorensenstefan sorensen64.44%116.67%
patrick mchardypatrick mchardy10.74%116.67%
jiri pirkojiri pirko10.74%116.67%
Total135100.00%6100.00%


static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) { struct net_device *real_dev = vlan_dev_priv(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; }

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frank blaschkafrank blaschka6697.06%133.33%
david s. millerdavid s. miller11.47%133.33%
jiri pirkojiri pirko11.47%133.33%
Total68100.00%3100.00%

#if IS_ENABLED(CONFIG_FCOE)
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_priv(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; }

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vasu devvasu dev7398.65%150.00%
jiri pirkojiri pirko11.35%150.00%
Total74100.00%2100.00%


static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) { struct net_device *real_dev = vlan_dev_priv(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; }

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vasu devvasu dev6098.36%150.00%
jiri pirkojiri pirko11.64%150.00%
Total61100.00%2100.00%


static int vlan_dev_fcoe_enable(struct net_device *dev) { struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; const struct net_device_ops *ops = real_dev->netdev_ops; int rc = -EINVAL; if (ops->ndo_fcoe_enable) rc = ops->ndo_fcoe_enable(real_dev); return rc; }

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yi zouyi zou5698.25%150.00%
jiri pirkojiri pirko11.75%150.00%
Total57100.00%2100.00%


static int vlan_dev_fcoe_disable(struct net_device *dev) { struct net_device *real_dev = vlan_dev_priv(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; }

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yi zouyi zou5698.25%150.00%
jiri pirkojiri pirko11.75%150.00%
Total57100.00%2100.00%


static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) { struct net_device *real_dev = vlan_dev_priv(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; }

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yi zouyi zou6798.53%150.00%
jiri pirkojiri pirko11.47%150.00%
Total68100.00%2100.00%


static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, struct scatterlist *sgl, unsigned int sgc) { struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; const struct net_device_ops *ops = real_dev->netdev_ops; int rc = 0; if (ops->ndo_fcoe_ddp_target) rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); return rc; }

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yi zouyi zou7398.65%150.00%
jiri pirkojiri pirko11.35%150.00%
Total74100.00%2100.00%

#endif
static void vlan_dev_change_rx_flags(struct net_device *dev, int change) { struct net_device *real_dev = vlan_dev_priv(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); } }

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patrick mchardypatrick mchardy6986.25%250.00%
matthijs kooijmanmatthijs kooijman1012.50%125.00%
jiri pirkojiri pirko11.25%125.00%
Total80100.00%4100.00%


static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) { dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); }

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david s. millerdavid s. miller1131.43%116.67%
chris leechchris leech1131.43%116.67%
linus torvaldslinus torvalds822.86%116.67%
jiri pirkojiri pirko25.71%116.67%
vlad yasevichvlad yasevich25.71%116.67%
patrick mchardypatrick mchardy12.86%116.67%
Total35100.00%6100.00%

/* * vlan network devices have devices nesting below it, and are a special * "super class" of normal network devices; split their locks off into a * separate class since they always nest. */ static struct lock_class_key vlan_netdev_xmit_lock_key; static struct lock_class_key vlan_netdev_addr_lock_key;
static void vlan_dev_set_lockdep_one(struct net_device *dev, struct netdev_queue *txq, void *_subclass) { lockdep_set_class_and_subclass(&txq->_xmit_lock, &vlan_netdev_xmit_lock_key, *(int *)_subclass); }

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david s. millerdavid s. miller38100.00%2100.00%
Total38100.00%2100.00%


static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) { lockdep_set_class_and_subclass(&dev->addr_list_lock, &vlan_netdev_addr_lock_key, subclass); netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); }

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david s. millerdavid s. miller37100.00%3100.00%
Total37100.00%3100.00%


static int vlan_dev_get_lock_subclass(struct net_device *dev) { return vlan_dev_priv(dev)->nest_level; }

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vlad yasevichvlad yasevich19100.00%1100.00%
Total19100.00%1100.00%

static const struct header_ops vlan_header_ops = { .create = vlan_dev_hard_header, .parse = eth_header_parse, };
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 vlan_dev_priv *vlan = vlan_dev_priv(dev); struct net_device *real_dev = vlan->real_dev; if (saddr == NULL) saddr = dev->dev_addr; return dev_hard_header(skb, real_dev, type, daddr, saddr, len); }

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david s. millerdavid s. miller6985.19%150.00%
peter bostrompeter bostrom1214.81%150.00%
Total81100.00%2100.00%

static const struct header_ops vlan_passthru_header_ops = { .create = vlan_passthru_hard_header, .parse = eth_header_parse, }; static struct device_type vlan_type = { .name = "vlan", }; static const struct net_device_ops vlan_netdev_ops;
static int vlan_dev_init(struct net_device *dev) { struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; netif_carrier_off(dev); /* IFF_BROADCAST|IFF_MULTICAST; ??? */ dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | IFF_MASTER | IFF_SLAVE); dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT))) | (1<<__LINK_STATE_PRESENT); dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC | NETIF_F_ALL_FCOE; dev->features |= real_dev->vlan_features | NETIF_F_LLTX | NETIF_F_GSO_SOFTWARE; dev->gso_max_size = real_dev->gso_max_size; dev->gso_max_segs = real_dev->gso_max_segs; if (dev->features & NETIF_F_VLAN_FEATURES) netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n"); dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE; /* ipv6 shared card related stuff */ dev->dev_id = real_dev->dev_id; if (is_zero_ether_addr(dev->dev_addr)) { ether_addr_copy(dev->dev_addr, real_dev->dev_addr); dev->addr_assign_type = NET_ADDR_STOLEN; } if (is_zero_ether_addr(dev->broadcast)) memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); #if IS_ENABLED(CONFIG_FCOE) dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; #endif dev->needed_headroom = real_dev->needed_headroom; if (vlan_hw_offload_capable(real_dev->features, vlan_dev_priv(dev)->vlan_proto)) { dev->header_ops = &vlan_passthru_header_ops; dev->hard_header_len = real_dev->hard_header_len; } else { dev->header_ops = &vlan_header_ops; dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; } dev->netdev_ops = &vlan_netdev_ops; SET_NETDEV_DEVTYPE(dev, &vlan_type); vlan_dev_set_lockdep_class(dev, vlan_dev_get_lock_subclass(dev)); vlan_dev_priv(dev)->vlan_pcpu_stats = netdev_alloc_pcpu_stats