mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 06:55:13 +08:00
de93cb2eaf
commit 6d4cdf47d2
(vlan: add 802.1q netpoll support) forgot to declare
as static some private functions.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
767 lines
20 KiB
C
767 lines
20 KiB
C
/* -*- 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/etherdevice.h>
|
|
#include <linux/ethtool.h>
|
|
#include <net/arp.h>
|
|
|
|
#include "vlan.h"
|
|
#include "vlanproc.h"
|
|
#include <linux/if_vlan.h>
|
|
#include <linux/netpoll.h>
|
|
|
|
/*
|
|
* Rebuild the Ethernet MAC header. This is called after an ARP
|
|
* (or in future other address resolution) has completed on this
|
|
* sk_buff. We now let ARP fill in the other fields.
|
|
*
|
|
* This routine CANNOT use cached dst->neigh!
|
|
* Really, it is used only when dst->neigh is wrong.
|
|
*
|
|
* TODO: This needs a checkup, I'm ignorant here. --BLG
|
|
*/
|
|
static int vlan_dev_rebuild_header(struct sk_buff *skb)
|
|
{
|
|
struct net_device *dev = skb->dev;
|
|
struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
|
|
|
|
switch (veth->h_vlan_encapsulated_proto) {
|
|
#ifdef CONFIG_INET
|
|
case htons(ETH_P_IP):
|
|
|
|
/* TODO: Confirm this will work with VLAN headers... */
|
|
return arp_find(veth->h_dest, skb);
|
|
#endif
|
|
default:
|
|
pr_debug("%s: unable to resolve type %X addresses\n",
|
|
dev->name, ntohs(veth->h_vlan_encapsulated_proto));
|
|
|
|
memcpy(veth->h_source, dev->dev_addr, ETH_ALEN);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
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_priv(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;
|
|
}
|
|
|
|
/*
|
|
* 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_priv(dev)->flags & VLAN_FLAG_REORDER_HDR)) {
|
|
vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
|
|
|
|
vlan_tci = vlan_dev_priv(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_priv(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 (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
|
|
vlan_dev_priv(dev)->flags & VLAN_FLAG_REORDER_HDR) {
|
|
u16 vlan_tci;
|
|
vlan_tci = vlan_dev_priv(dev)->vlan_id;
|
|
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
|
|
skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
|
|
}
|
|
|
|
skb_set_dev(skb, vlan_dev_priv(dev)->real_dev);
|
|
len = skb->len;
|
|
if (netpoll_tx_running(dev))
|
|
return skb->dev->netdev_ops->ndo_start_xmit(skb, skb->dev);
|
|
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_priv(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_priv(dev)->vlan_pcpu_stats->tx_dropped);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
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_priv(dev)->real_dev->mtu < new_mtu)
|
|
return -ERANGE;
|
|
|
|
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;
|
|
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/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))
|
|
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);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
|
|
{
|
|
strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23);
|
|
}
|
|
|
|
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 (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_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 (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
|
|
dev_uc_del(real_dev, dev->dev_addr);
|
|
|
|
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 (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) {
|
|
err = dev_uc_add(real_dev, addr->sa_data);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
|
|
dev_uc_del(real_dev, dev->dev_addr);
|
|
|
|
out:
|
|
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
|
|
return 0;
|
|
}
|
|
|
|
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:
|
|
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;
|
|
}
|
|
|
|
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 defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
|
|
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_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;
|
|
}
|
|
|
|
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
|
|
|
|
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);
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
static const struct header_ops vlan_header_ops = {
|
|
.create = vlan_dev_hard_header,
|
|
.rebuild = vlan_dev_rebuild_header,
|
|
.parse = eth_header_parse,
|
|
};
|
|
|
|
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;
|
|
int subclass = 0;
|
|
|
|
netif_carrier_off(dev);
|
|
|
|
/* IFF_BROADCAST|IFF_MULTICAST; ??? */
|
|
dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
|
|
IFF_MASTER | IFF_SLAVE);
|
|
dev->iflink = real_dev->ifindex;
|
|
dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
|
|
(1<<__LINK_STATE_DORMANT))) |
|
|
(1<<__LINK_STATE_PRESENT);
|
|
|
|
dev->hw_features = NETIF_F_ALL_CSUM | NETIF_F_SG |
|
|
NETIF_F_FRAGLIST | NETIF_F_ALL_TSO |
|
|
NETIF_F_HIGHDMA | NETIF_F_SCTP_CSUM |
|
|
NETIF_F_ALL_FCOE;
|
|
|
|
dev->features |= real_dev->vlan_features | NETIF_F_LLTX;
|
|
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
|
|
|
|
dev->needed_headroom = real_dev->needed_headroom;
|
|
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;
|
|
} else {
|
|
dev->header_ops = &vlan_header_ops;
|
|
dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
|
|
}
|
|
|
|
dev->netdev_ops = &vlan_netdev_ops;
|
|
|
|
if (is_vlan_dev(real_dev))
|
|
subclass = 1;
|
|
|
|
vlan_dev_set_lockdep_class(dev, subclass);
|
|
|
|
vlan_dev_priv(dev)->vlan_pcpu_stats = alloc_percpu(struct vlan_pcpu_stats);
|
|
if (!vlan_dev_priv(dev)->vlan_pcpu_stats)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void vlan_dev_uninit(struct net_device *dev)
|
|
{
|
|
struct vlan_priority_tci_mapping *pm;
|
|
struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
|
|
int i;
|
|
|
|
free_percpu(vlan->vlan_pcpu_stats);
|
|
vlan->vlan_pcpu_stats = NULL;
|
|
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 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;
|
|
u32 old_features = features;
|
|
|
|
features &= real_dev->vlan_features;
|
|
features |= NETIF_F_RXCSUM;
|
|
features &= real_dev->features;
|
|
|
|
features |= old_features & NETIF_F_SOFT_FEATURES;
|
|
features |= NETIF_F_LLTX;
|
|
|
|
return features;
|
|
}
|
|
|
|
static int vlan_ethtool_get_settings(struct net_device *dev,
|
|
struct ethtool_cmd *cmd)
|
|
{
|
|
const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
|
|
|
|
return __ethtool_get_settings(vlan->real_dev, cmd);
|
|
}
|
|
|
|
static void vlan_ethtool_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *info)
|
|
{
|
|
strcpy(info->driver, vlan_fullname);
|
|
strcpy(info->version, vlan_version);
|
|
strcpy(info->fw_version, "N/A");
|
|
}
|
|
|
|
static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
|
|
{
|
|
|
|
if (vlan_dev_priv(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_priv(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;
|
|
}
|
|
|
|
#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 *info = vlan_dev_priv(dev);
|
|
struct net_device *real_dev = info->real_dev;
|
|
struct netpoll *netpoll;
|
|
int err = 0;
|
|
|
|
netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
|
|
err = -ENOMEM;
|
|
if (!netpoll)
|
|
goto out;
|
|
|
|
netpoll->dev = real_dev;
|
|
strlcpy(netpoll->dev_name, real_dev->name, IFNAMSIZ);
|
|
|
|
err = __netpoll_setup(netpoll);
|
|
if (err) {
|
|
kfree(netpoll);
|
|
goto out;
|
|
}
|
|
|
|
info->netpoll = netpoll;
|
|
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static void vlan_dev_netpoll_cleanup(struct net_device *dev)
|
|
{
|
|
struct vlan_dev_priv *info = vlan_dev_priv(dev);
|
|
struct netpoll *netpoll = info->netpoll;
|
|
|
|
if (!netpoll)
|
|
return;
|
|
|
|
info->netpoll = NULL;
|
|
|
|
/* Wait for transmitting packets to finish before freeing. */
|
|
synchronize_rcu_bh();
|
|
|
|
__netpoll_cleanup(netpoll);
|
|
kfree(netpoll);
|
|
}
|
|
#endif /* CONFIG_NET_POLL_CONTROLLER */
|
|
|
|
static const struct ethtool_ops vlan_ethtool_ops = {
|
|
.get_settings = vlan_ethtool_get_settings,
|
|
.get_drvinfo = vlan_ethtool_get_drvinfo,
|
|
.get_link = ethtool_op_get_link,
|
|
};
|
|
|
|
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_do_ioctl = vlan_dev_ioctl,
|
|
.ndo_neigh_setup = vlan_dev_neigh_setup,
|
|
.ndo_get_stats64 = vlan_dev_get_stats64,
|
|
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
|
|
.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_get_wwn = vlan_dev_fcoe_get_wwn,
|
|
.ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target,
|
|
#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,
|
|
};
|
|
|
|
void vlan_setup(struct net_device *dev)
|
|
{
|
|
ether_setup(dev);
|
|
|
|
dev->priv_flags |= IFF_802_1Q_VLAN;
|
|
dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
|
|
dev->tx_queue_len = 0;
|
|
|
|
dev->netdev_ops = &vlan_netdev_ops;
|
|
dev->destructor = free_netdev;
|
|
dev->ethtool_ops = &vlan_ethtool_ops;
|
|
|
|
memset(dev->broadcast, 0, ETH_ALEN);
|
|
}
|