Contributors: 71
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Emeel Hakim |
984 |
19.01% |
1 |
0.51% |
| Patrick McHardy |
865 |
16.71% |
28 |
14.36% |
| Linus Torvalds |
470 |
9.08% |
2 |
1.03% |
| Eric Dumazet |
411 |
7.94% |
25 |
12.82% |
| Stephen Hemminger |
303 |
5.85% |
11 |
5.64% |
| Yi Zou |
217 |
4.19% |
3 |
1.54% |
| Vasu Dev |
187 |
3.61% |
1 |
0.51% |
| Benjamin LaHaise |
177 |
3.42% |
1 |
0.51% |
| Linus Torvalds (pre-git) |
174 |
3.36% |
25 |
12.82% |
| David S. Miller |
123 |
2.38% |
7 |
3.59% |
| Mike Manning |
100 |
1.93% |
3 |
1.54% |
| Pablo Neira Ayuso |
83 |
1.60% |
1 |
0.51% |
| Maxim Georgiev |
80 |
1.55% |
1 |
0.51% |
| Pavel Emelyanov |
73 |
1.41% |
1 |
0.51% |
| Américo Wang |
72 |
1.39% |
5 |
2.56% |
| Wang Chen |
68 |
1.31% |
1 |
0.51% |
| Frank Blaschka |
64 |
1.24% |
1 |
0.51% |
| Michał Mirosław |
57 |
1.10% |
5 |
2.56% |
| Jiri Pirko |
53 |
1.02% |
3 |
1.54% |
| Vlad Yasevich |
51 |
0.99% |
4 |
2.05% |
| David Ward |
47 |
0.91% |
1 |
0.51% |
| Christopher Leech |
43 |
0.83% |
2 |
1.03% |
| Felix Fietkau |
38 |
0.73% |
1 |
0.51% |
| Ben Greear |
32 |
0.62% |
1 |
0.51% |
| Eran Ben Elisha |
29 |
0.56% |
1 |
0.51% |
| Nicolas Dichtel |
27 |
0.52% |
1 |
0.51% |
| Richard Cochran |
27 |
0.52% |
2 |
1.03% |
| Paolo Abeni |
26 |
0.50% |
1 |
0.51% |
| Stefan Rompf |
26 |
0.50% |
2 |
1.03% |
| Jay Vosburgh |
20 |
0.39% |
1 |
0.51% |
| Doug Goldstein |
20 |
0.39% |
1 |
0.51% |
| Joe Perches |
19 |
0.37% |
4 |
2.05% |
| Toshiaki Makita |
16 |
0.31% |
2 |
1.03% |
| John W. Linville |
15 |
0.29% |
2 |
1.03% |
| Xin Long |
15 |
0.29% |
2 |
1.03% |
| Jarod Wilson |
12 |
0.23% |
1 |
0.51% |
| Davide Caratti |
11 |
0.21% |
1 |
0.51% |
| Michal Kubeček |
10 |
0.19% |
1 |
0.51% |
| Matthijs Kooijman |
10 |
0.19% |
1 |
0.51% |
| Shan Wei |
10 |
0.19% |
1 |
0.51% |
| Ariel Levkovich |
8 |
0.15% |
1 |
0.51% |
| Ziyang Xuan |
7 |
0.14% |
2 |
1.03% |
| Phil Oester |
7 |
0.14% |
1 |
0.51% |
| Björn Andersson |
6 |
0.12% |
1 |
0.51% |
| John Fastabend |
6 |
0.12% |
2 |
1.03% |
| Jakub Kiciński |
6 |
0.12% |
3 |
1.54% |
| Kees Cook |
6 |
0.12% |
1 |
0.51% |
| Zhang Shengju |
6 |
0.12% |
1 |
0.51% |
| David Decotigny |
5 |
0.10% |
1 |
0.51% |
| Octavian Purdila |
5 |
0.10% |
1 |
0.51% |
| Jerome Borsboom |
5 |
0.10% |
1 |
0.51% |
| Shmulik Hen |
5 |
0.10% |
1 |
0.51% |
| Eyal Perry |
4 |
0.08% |
1 |
0.51% |
| Hangbin Liu |
4 |
0.08% |
1 |
0.51% |
| Thomas Gleixner |
4 |
0.08% |
2 |
1.03% |
| Wang Sheng-Hui |
4 |
0.08% |
1 |
0.51% |
| Wolfram Sang |
3 |
0.06% |
1 |
0.51% |
| Alexander Duyck |
3 |
0.06% |
1 |
0.51% |
| Arnd Bergmann |
3 |
0.06% |
1 |
0.51% |
| Andrey Vagin |
2 |
0.04% |
1 |
0.51% |
| Tom Herbert |
2 |
0.04% |
2 |
1.03% |
| Phil Sutter |
2 |
0.04% |
1 |
0.51% |
| Wei Yongjun |
1 |
0.02% |
1 |
0.51% |
| Hideaki Yoshifuji / 吉藤英明 |
1 |
0.02% |
1 |
0.51% |
| Neil Horman |
1 |
0.02% |
1 |
0.51% |
| Eric W. Biedermann |
1 |
0.02% |
1 |
0.51% |
| Kory Maincent |
1 |
0.02% |
1 |
0.51% |
| Sun Lianwen |
1 |
0.02% |
1 |
0.51% |
| Ricardo B. Marliere |
1 |
0.02% |
1 |
0.51% |
| Björn Mork |
1 |
0.02% |
1 |
0.51% |
| Debabrata Banerjee |
1 |
0.02% |
1 |
0.51% |
| Total |
5177 |
|
195 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/* -*- 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.
*/
#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 <linux/phy.h>
#include <net/arp.h>
#include <net/macsec.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 = 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;
}
static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb)
{
#ifdef CONFIG_NET_POLL_CONTROLLER
return netpoll_send_skb(vlan->netpoll, skb);
#else
BUG();
return NETDEV_TX_OK;
#endif
}
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 (vlan->flags & VLAN_FLAG_REORDER_HDR ||
veth->h_vlan_proto != vlan->vlan_proto) {
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);
u64_stats_inc(&stats->tx_packets);
u64_stats_add(&stats->tx_bytes, len);
u64_stats_update_end(&stats->syncp);
} else {
this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped);
}
return ret;
}
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;
WRITE_ONCE(dev->mtu, new_mtu);
return 0;
}
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;
}
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;
}
/* Flags are defined in the vlan_flags enum in
* include/uapi/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 |
VLAN_FLAG_BRIDGE_BINDING))
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;
}
void vlan_dev_get_realdev_name(const struct net_device *dev, char *result, size_t size)
{
strscpy_pad(result, vlan_dev_priv(dev)->real_dev->name, size);
}
bool vlan_dev_inherit_address(struct net_device *dev,
struct net_device *real_dev)
{
if (dev->addr_assign_type != NET_ADDR_STOLEN)
return false;
eth_hw_addr_set(dev, real_dev->dev_addr);
call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
return true;
}
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) &&
!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
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;
}
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);
if (!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
netif_carrier_off(dev);
return 0;
}
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:
eth_hw_addr_set(dev, addr->sa_data);
return 0;
}
static int vlan_hwtstamp_get(struct net_device *dev,
struct kernel_hwtstamp_config *cfg)
{
struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
return generic_hwtstamp_get_lower(real_dev, cfg);
}
static int vlan_hwtstamp_set(struct net_device *dev,
struct kernel_hwtstamp_config *cfg,
struct netlink_ext_ack *extack)
{
struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
if (!net_eq(dev_net(dev), dev_net(real_dev)))
return -EOPNOTSUPP;
return generic_hwtstamp_set_lower(real_dev, cfg, extack);
}
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;
strscpy_pad(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
ifrr.ifr_ifru = ifr->ifr_ifru;
switch (cmd) {
case SIOCGMIIPHY:
case SIOCGMIIREG:
case SIOCSMIIREG:
if (netif_device_present(real_dev) && ops->ndo_eth_ioctl)
err = ops->ndo_eth_ioctl(real_dev, &ifrr, cmd);
break;
}
if (!err)
ifr->ifr_ifru = ifrr.ifr_ifru;
return err;
}
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;
}
#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;
}
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;
}
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;
}
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;
}
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;
}
#endif
#ifdef NETDEV_FCOE_WWNN
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;
}
#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);
}
}
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);
}
static __be16 vlan_parse_protocol(const struct sk_buff *skb)
{
struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
return __vlan_get_protocol(skb, veth->h_vlan_proto, NULL);
}
static const struct header_ops vlan_header_ops = {
.create = vlan_dev_hard_header,
.parse = eth_header_parse,
.parse_protocol = vlan_parse_protocol,
};
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);
}
static const struct header_ops vlan_passthru_header_ops = {
.create = vlan_passthru_hard_header,
.parse = eth_header_parse,
.parse_protocol = vlan_parse_protocol,
};
static const 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 vlan_dev_priv *vlan = vlan_dev_priv(dev);
struct net_device *real_dev = vlan->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);
if (vlan->flags & VLAN_FLAG_BRIDGE_BINDING)
dev->state |= (1 << __LINK_STATE_NOCARRIER);
dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG |
NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE |
NETIF_F_GSO_ENCAP_ALL |
NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC |
NETIF_F_ALL_FCOE;
if (real_dev->vlan_features & NETIF_F_HW_MACSEC)
dev->hw_features |= NETIF_F_HW_MACSEC;
dev->features |= dev->hw_features | NETIF_F_LLTX;
netif_inherit_tso_max(dev, real_dev);
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;
dev->hw_enc_features = vlan_tnl_features(real_dev);
dev->mpls_features = real_dev->mpls_features;
/* ipv6 shared card related stuff */
dev->dev_id = real_dev->dev_id;
if (is_zero_ether_addr(dev->dev_addr)) {
eth_hw_addr_set(dev, 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->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);
netdev_lockdep_set_classes(dev);
vlan->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
if (!vlan->vlan_pcpu_stats)
return -ENOMEM;
/* Get vlan's reference to real_dev */
netdev_hold(real_dev, &vlan->dev_tracker, GFP_KERNEL);
return 0;
}
/* Note: this function might be called multiple times for the same device. */
void vlan_dev_free_egress_priority(const struct net_device *dev)
{
struct vlan_priority_tci_mapping *pm;
struct vlan_dev_priv *vlan = vlan_dev_priv(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 void vlan_dev_uninit(struct net_device *dev)
{
vlan_dev_free_egress_priority(dev);
}
static netdev_features_t vlan_dev_fix_features(struct net_device *dev,
netdev_features_t features)
{
struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
netdev_features_t old_features = features;
netdev_features_t lower_features;
lower_features = netdev_intersect_features((real_dev->vlan_features |
NETIF_F_RXCSUM),
real_dev->features);
/* Add HW_CSUM setting to preserve user ability to control
* checksum offload on the vlan device.
*/
if (lower_features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
lower_features |= NETIF_F_HW_CSUM;
features = netdev_intersect_features(features, lower_features);
features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE);
features |= NETIF_F_LLTX;
return features;
}
static int vlan_ethtool_get_link_ksettings(struct net_device *dev,
struct ethtool_link_ksettings *cmd)
{
const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
return __ethtool_get_link_ksettings(vlan->real_dev, cmd);
}
static void vlan_ethtool_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
strscpy(info->driver, vlan_fullname, sizeof(info->driver));
strscpy(info->version, vlan_version, sizeof(info->version));
strscpy(info->fw_version, "N/A", sizeof(info->fw_version));
}
static int vlan_ethtool_get_ts_info(struct net_device *dev,
struct kernel_ethtool_ts_info *info)
{
const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
return ethtool_get_ts_info_by_layer(vlan->real_dev, info);
}
static void vlan_dev_get_stats64(struct net_device *dev,
struct rtnl_link_stats64 *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_priv(dev)->vlan_pcpu_stats, i);
do {
start = u64_stats_fetch_begin(&p->syncp);
rxpackets = u64_stats_read(&p->rx_packets);
rxbytes = u64_stats_read(&p->rx_bytes);
rxmulticast = u64_stats_read(&p->rx_multicast);
txpackets = u64_stats_read(&p->tx_packets);
txbytes = u64_stats_read(&p->tx_bytes);
} while (u64_stats_fetch_retry(&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 += READ_ONCE(p->rx_errors);
tx_dropped += READ_ONCE(p->tx_dropped);
}
stats->rx_errors = rx_errors;
stats->tx_dropped = tx_dropped;
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static void vlan_dev_poll_controller(struct net_device *dev)
{
return;
}
static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo)
{
struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
struct net_device *real_dev = vlan->real_dev;
struct netpoll *netpoll;
int err = 0;
netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
err = -ENOMEM;
if (!netpoll)
goto out;
err = __netpoll_setup(netpoll, real_dev);
if (err) {
kfree(netpoll);
goto out;
}
vlan->netpoll = netpoll;
out:
return err;
}
static void vlan_dev_netpoll_cleanup(struct net_device *dev)
{
struct vlan_dev_priv *vlan= vlan_dev_priv(dev);
struct netpoll *netpoll = vlan->netpoll;
if (!netpoll)
return;
vlan->netpoll = NULL;
__netpoll_free(netpoll);
}
#endif /* CONFIG_NET_POLL_CONTROLLER */
static int vlan_dev_get_iflink(const struct net_device *dev)
{
const struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
return READ_ONCE(real_dev->ifindex);
}
static int vlan_dev_fill_forward_path(struct net_device_path_ctx *ctx,
struct net_device_path *path)
{
struct vlan_dev_priv *vlan = vlan_dev_priv(ctx->dev);
path->type = DEV_PATH_VLAN;
path->encap.id = vlan->vlan_id;
path->encap.proto = vlan->vlan_proto;
path->dev = ctx->dev;
ctx->dev = vlan->real_dev;
if (ctx->num_vlans >= ARRAY_SIZE(ctx->vlan))
return -ENOSPC;
ctx->vlan[ctx->num_vlans].id = vlan->vlan_id;
ctx->vlan[ctx->num_vlans].proto = vlan->vlan_proto;
ctx->num_vlans++;
return 0;
}
#if IS_ENABLED(CONFIG_MACSEC)
static const struct macsec_ops *vlan_get_macsec_ops(const struct macsec_context *ctx)
{
return vlan_dev_priv(ctx->netdev)->real_dev->macsec_ops;
}
static int vlan_macsec_offload(int (* const func)(struct macsec_context *),
struct macsec_context *ctx)
{
if (unlikely(!func))
return 0;
return (*func)(ctx);
}
static int vlan_macsec_dev_open(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_dev_open, ctx);
}
static int vlan_macsec_dev_stop(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_dev_stop, ctx);
}
static int vlan_macsec_add_secy(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_add_secy, ctx);
}
static int vlan_macsec_upd_secy(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_upd_secy, ctx);
}
static int vlan_macsec_del_secy(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_del_secy, ctx);
}
static int vlan_macsec_add_rxsc(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_add_rxsc, ctx);
}
static int vlan_macsec_upd_rxsc(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_upd_rxsc, ctx);
}
static int vlan_macsec_del_rxsc(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_del_rxsc, ctx);
}
static int vlan_macsec_add_rxsa(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_add_rxsa, ctx);
}
static int vlan_macsec_upd_rxsa(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_upd_rxsa, ctx);
}
static int vlan_macsec_del_rxsa(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_del_rxsa, ctx);
}
static int vlan_macsec_add_txsa(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_add_txsa, ctx);
}
static int vlan_macsec_upd_txsa(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_upd_txsa, ctx);
}
static int vlan_macsec_del_txsa(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_del_txsa, ctx);
}
static int vlan_macsec_get_dev_stats(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_get_dev_stats, ctx);
}
static int vlan_macsec_get_tx_sc_stats(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_get_tx_sc_stats, ctx);
}
static int vlan_macsec_get_tx_sa_stats(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_get_tx_sa_stats, ctx);
}
static int vlan_macsec_get_rx_sc_stats(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_get_rx_sc_stats, ctx);
}
static int vlan_macsec_get_rx_sa_stats(struct macsec_context *ctx)
{
const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
if (!ops)
return -EOPNOTSUPP;
return vlan_macsec_offload(ops->mdo_get_rx_sa_stats, ctx);
}
static const struct macsec_ops macsec_offload_ops = {
/* Device wide */
.mdo_dev_open = vlan_macsec_dev_open,
.mdo_dev_stop = vlan_macsec_dev_stop,
/* SecY */
.mdo_add_secy = vlan_macsec_add_secy,
.mdo_upd_secy = vlan_macsec_upd_secy,
.mdo_del_secy = vlan_macsec_del_secy,
/* Security channels */
.mdo_add_rxsc = vlan_macsec_add_rxsc,
.mdo_upd_rxsc = vlan_macsec_upd_rxsc,
.mdo_del_rxsc = vlan_macsec_del_rxsc,
/* Security associations */
.mdo_add_rxsa = vlan_macsec_add_rxsa,
.mdo_upd_rxsa = vlan_macsec_upd_rxsa,
.mdo_del_rxsa = vlan_macsec_del_rxsa,
.mdo_add_txsa = vlan_macsec_add_txsa,
.mdo_upd_txsa = vlan_macsec_upd_txsa,
.mdo_del_txsa = vlan_macsec_del_txsa,
/* Statistics */
.mdo_get_dev_stats = vlan_macsec_get_dev_stats,
.mdo_get_tx_sc_stats = vlan_macsec_get_tx_sc_stats,
.mdo_get_tx_sa_stats = vlan_macsec_get_tx_sa_stats,
.mdo_get_rx_sc_stats = vlan_macsec_get_rx_sc_stats,
.mdo_get_rx_sa_stats = vlan_macsec_get_rx_sa_stats,
};
#endif
static const struct ethtool_ops vlan_ethtool_ops = {
.get_link_ksettings = vlan_ethtool_get_link_ksettings,
.get_drvinfo = vlan_ethtool_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_ts_info = vlan_ethtool_get_ts_info,
};
static const struct net_device_ops vlan_netdev_ops = {
.ndo_change_mtu = vlan_dev_change_mtu,
.ndo_init = vlan_dev_init,
.ndo_uninit = vlan_dev_uninit,
.ndo_open = vlan_dev_open,
.ndo_stop = vlan_dev_stop,
.ndo_start_xmit = vlan_dev_hard_start_xmit,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = vlan_dev_set_mac_address,
.ndo_set_rx_mode = vlan_dev_set_rx_mode,
.ndo_change_rx_flags = vlan_dev_change_rx_flags,
.ndo_eth_ioctl = vlan_dev_ioctl,
.ndo_neigh_setup = vlan_dev_neigh_setup,
.ndo_get_stats64 = vlan_dev_get_stats64,
#if IS_ENABLED(CONFIG_FCOE)
.ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
.ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
.ndo_fcoe_enable = vlan_dev_fcoe_enable,
.ndo_fcoe_disable = vlan_dev_fcoe_disable,
.ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target,
#endif
#ifdef NETDEV_FCOE_WWNN
.ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
#endif
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = vlan_dev_poll_controller,
.ndo_netpoll_setup = vlan_dev_netpoll_setup,
.ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup,
#endif
.ndo_fix_features = vlan_dev_fix_features,
.ndo_get_iflink = vlan_dev_get_iflink,
.ndo_fill_forward_path = vlan_dev_fill_forward_path,
.ndo_hwtstamp_get = vlan_hwtstamp_get,
.ndo_hwtstamp_set = vlan_hwtstamp_set,
};
static void vlan_dev_free(struct net_device *dev)
{
struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
free_percpu(vlan->vlan_pcpu_stats);
vlan->vlan_pcpu_stats = NULL;
/* Get rid of the vlan's reference to real_dev */
netdev_put(vlan->real_dev, &vlan->dev_tracker);
}
void vlan_setup(struct net_device *dev)
{
ether_setup(dev);
dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE;
dev->priv_flags |= IFF_UNICAST_FLT;
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
netif_keep_dst(dev);
dev->netdev_ops = &vlan_netdev_ops;
dev->needs_free_netdev = true;
dev->priv_destructor = vlan_dev_free;
dev->ethtool_ops = &vlan_ethtool_ops;
#if IS_ENABLED(CONFIG_MACSEC)
dev->macsec_ops = &macsec_offload_ops;
#endif
dev->min_mtu = 0;
dev->max_mtu = ETH_MAX_MTU;
eth_zero_addr(dev->broadcast);
}