/**
* tipc_l2_device_event - handle device events from network device
* @nb: the context of the notification
* @evt: the type of event
* @ptr: the net device that the event was on
*
* This function is called by the Ethernet driver in case of link
* change event.
*/
static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
void *ptr)
{
struct tipc_bearer *b_ptr;
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
if (!net_eq(dev_net(dev), &init_net))
return NOTIFY_DONE;
b_ptr = rtnl_dereference(dev->tipc_ptr);
if (!b_ptr)
return NOTIFY_DONE;
b_ptr->mtu = dev->mtu;
switch (evt) {
case NETDEV_CHANGE:
if (netif_carrier_ok(dev))
break;
case NETDEV_DOWN:
case NETDEV_CHANGEMTU:
tipc_reset_bearer(b_ptr);
break;
case NETDEV_CHANGEADDR:
b_ptr->media->raw2addr(b_ptr, &b_ptr->addr,
(char *)dev->dev_addr);
tipc_reset_bearer(b_ptr);
break;
case NETDEV_UNREGISTER:
case NETDEV_CHANGENAME:
bearer_disable(b_ptr, false);
break;
}
return NOTIFY_OK;
}
/* Register for a notification on device removal */
static int
linux_netmap_notifier_cb(struct notifier_block *b,
unsigned long val, void *v)
{
struct ifnet *ifp = netdev_notifier_info_to_dev(v);
/* linux calls us while holding rtnl_lock() */
switch (val) {
case NETDEV_REGISTER:
netmap_undo_zombie(ifp);
break;
case NETDEV_UNREGISTER:
netmap_make_zombie(ifp);
break;
case NETDEV_GOING_DOWN:
netmap_disable_all_rings(ifp);
break;
case NETDEV_UP:
netmap_enable_all_rings(ifp);
break;
default:
/* we don't care */
break;
}
return NOTIFY_OK;
}
static int brnf_device_event(struct notifier_block *unused, unsigned long event,
void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct brnf_net *brnet;
struct net *net;
int ret;
if (event != NETDEV_REGISTER || !(dev->priv_flags & IFF_EBRIDGE))
return NOTIFY_DONE;
ASSERT_RTNL();
net = dev_net(dev);
brnet = net_generic(net, brnf_net_id);
if (brnet->enabled)
return NOTIFY_OK;
ret = nf_register_net_hooks(net, br_nf_ops, ARRAY_SIZE(br_nf_ops));
if (ret)
return NOTIFY_BAD;
brnet->enabled = true;
return NOTIFY_OK;
}
static int macvtap_device_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct macvtap_dev *vlantap;
struct device *classdev;
dev_t devt;
int err;
char tap_name[IFNAMSIZ];
if (dev->rtnl_link_ops != &macvtap_link_ops)
return NOTIFY_DONE;
snprintf(tap_name, IFNAMSIZ, "tap%d", dev->ifindex);
vlantap = netdev_priv(dev);
switch (event) {
case NETDEV_REGISTER:
/* Create the device node here after the network device has
* been registered but before register_netdevice has
* finished running.
*/
err = tap_get_minor(macvtap_major, &vlantap->tap);
if (err)
return notifier_from_errno(err);
devt = MKDEV(MAJOR(macvtap_major), vlantap->tap.minor);
classdev = device_create(&macvtap_class, &dev->dev, devt,
dev, tap_name);
if (IS_ERR(classdev)) {
tap_free_minor(macvtap_major, &vlantap->tap);
return notifier_from_errno(PTR_ERR(classdev));
}
err = sysfs_create_link(&dev->dev.kobj, &classdev->kobj,
tap_name);
if (err)
return notifier_from_errno(err);
break;
case NETDEV_UNREGISTER:
/* vlan->minor == 0 if NETDEV_REGISTER above failed */
if (vlantap->tap.minor == 0)
break;
sysfs_remove_link(&dev->dev.kobj, tap_name);
devt = MKDEV(MAJOR(macvtap_major), vlantap->tap.minor);
device_destroy(&macvtap_class, devt);
tap_free_minor(macvtap_major, &vlantap->tap);
break;
case NETDEV_CHANGE_TX_QUEUE_LEN:
if (tap_queue_resize(&vlantap->tap))
return NOTIFY_BAD;
break;
}
return NOTIFY_DONE;
}
static int raw_notifier(struct notifier_block *nb,
unsigned long msg, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct raw_sock *ro = container_of(nb, struct raw_sock, notifier);
struct sock *sk = &ro->sk;
if (!net_eq(dev_net(dev), &init_net))
return NOTIFY_DONE;
if (dev->type != ARPHRD_CAN)
return NOTIFY_DONE;
if (ro->ifindex != dev->ifindex)
return NOTIFY_DONE;
switch (msg) {
case NETDEV_UNREGISTER:
lock_sock(sk);
/* remove current filters & unregister */
if (ro->bound)
raw_disable_allfilters(dev, sk);
if (ro->count > 1)
kfree(ro->filter);
ro->ifindex = 0;
ro->bound = 0;
ro->count = 0;
release_sock(sk);
sk->sk_err = ENODEV;
if (!sock_flag(sk, SOCK_DEAD))
sk->sk_error_report(sk);
break;
case NETDEV_DOWN:
sk->sk_err = ENETDOWN;
if (!sock_flag(sk, SOCK_DEAD))
sk->sk_error_report(sk);
break;
}
return NOTIFY_DONE;
}
static int vti_device_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct ip_tunnel *tunnel = netdev_priv(dev);
if (!is_vti_tunnel(dev))
return NOTIFY_DONE;
switch (event) {
case NETDEV_DOWN:
if (!net_eq(tunnel->net, dev_net(dev)))
xfrm_garbage_collect(tunnel->net);
break;
}
return NOTIFY_DONE;
}
static int vrf_device_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
/* only care about unregister events to drop slave references */
if (event == NETDEV_UNREGISTER) {
struct net_device *vrf_dev;
if (!netif_is_l3_slave(dev))
goto out;
vrf_dev = netdev_master_upper_dev_get(dev);
vrf_del_slave(vrf_dev, dev);
}
out:
return NOTIFY_DONE;
}
/**
* recv_notification - handle device updates from OS
*
* Change the state of the InfiniBand bearer (if any) associated with the
* specified device.
*/
static int recv_notification(struct notifier_block *nb, unsigned long evt,
void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct ib_bearer *ib_ptr = &ib_bearers[0];
struct ib_bearer *stop = &ib_bearers[MAX_IB_BEARERS];
if (!net_eq(dev_net(dev), &init_net))
return NOTIFY_DONE;
while ((ib_ptr->dev != dev)) {
if (++ib_ptr == stop)
return NOTIFY_DONE; /* couldn't find device */
}
if (!ib_ptr->bearer)
return NOTIFY_DONE; /* bearer had been disabled */
ib_ptr->bearer->mtu = dev->mtu;
switch (evt) {
case NETDEV_CHANGE:
if (netif_carrier_ok(dev))
tipc_continue(ib_ptr->bearer);
else
tipc_block_bearer(ib_ptr->bearer->name);
break;
case NETDEV_UP:
tipc_continue(ib_ptr->bearer);
break;
case NETDEV_DOWN:
tipc_block_bearer(ib_ptr->bearer->name);
break;
case NETDEV_CHANGEMTU:
case NETDEV_CHANGEADDR:
tipc_block_bearer(ib_ptr->bearer->name);
tipc_continue(ib_ptr->bearer);
break;
case NETDEV_UNREGISTER:
case NETDEV_CHANGENAME:
tipc_disable_bearer(ib_ptr->bearer->name);
break;
}
return NOTIFY_OK;
}
static int netdev_trig_notify(struct notifier_block *nb,
unsigned long evt,
void *dv)
{
struct net_device *dev = netdev_notifier_info_to_dev((struct netdev_notifier_info *) dv);
struct led_netdev_data *trigger_data = container_of(nb, struct led_netdev_data, notifier);
if (evt != NETDEV_UP && evt != NETDEV_DOWN && evt != NETDEV_CHANGE && evt != NETDEV_REGISTER && evt != NETDEV_UNREGISTER && evt != NETDEV_CHANGENAME)
return NOTIFY_DONE;
spin_lock_bh(&trigger_data->lock);
if (strcmp(dev->name, trigger_data->device_name))
goto done;
del_timer_sync(&trigger_data->timer);
if (evt == NETDEV_REGISTER || evt == NETDEV_CHANGENAME) {
if (trigger_data->net_dev != NULL)
dev_put(trigger_data->net_dev);
dev_hold(dev);
trigger_data->net_dev = dev;
trigger_data->link_up = 0;
goto done;
}
if (evt == NETDEV_UNREGISTER && trigger_data->net_dev != NULL) {
dev_put(trigger_data->net_dev);
trigger_data->net_dev = NULL;
goto done;
}
/* UP / DOWN / CHANGE */
trigger_data->link_up = (evt != NETDEV_DOWN && netif_carrier_ok(dev));
set_baseline_state(trigger_data);
done:
spin_unlock_bh(&trigger_data->lock);
return NOTIFY_DONE;
}
/* NETDEV rename notifier to rename the associated led triggers too */
static int can_led_notifier(struct notifier_block *nb, unsigned long msg,
void *ptr)
{
struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
struct can_priv *priv = safe_candev_priv(netdev);
char name[CAN_LED_NAME_SZ];
if (!priv)
return NOTIFY_DONE;
if (msg == NETDEV_CHANGENAME) {
snprintf(name, sizeof(name), "%s-tx", netdev->name);
led_trigger_rename_static(name, priv->tx_led_trig);
snprintf(name, sizeof(name), "%s-rx", netdev->name);
led_trigger_rename_static(name, priv->rx_led_trig);
}
return NOTIFY_DONE;
}
static int rmnet_config_notify_cb(struct notifier_block *nb,
unsigned long event, void *data)
{
struct net_device *dev = netdev_notifier_info_to_dev(data);
if (!dev)
return NOTIFY_DONE;
switch (event) {
case NETDEV_UNREGISTER:
netdev_dbg(dev, "Kernel unregister\n");
rmnet_force_unassociate_device(dev);
break;
default:
break;
}
return NOTIFY_DONE;
}
static int rxe_notify(struct notifier_block *not_blk,
unsigned long event,
void *arg)
{
struct net_device *ndev = netdev_notifier_info_to_dev(arg);
struct rxe_dev *rxe = rxe_get_dev_from_net(ndev);
if (!rxe)
return NOTIFY_OK;
switch (event) {
case NETDEV_UNREGISTER:
ib_unregister_device_queued(&rxe->ib_dev);
break;
case NETDEV_UP:
rxe_port_up(rxe);
break;
case NETDEV_DOWN:
rxe_port_down(rxe);
break;
case NETDEV_CHANGEMTU:
pr_info("%s changed mtu to %d\n", ndev->name, ndev->mtu);
rxe_set_mtu(rxe, ndev->mtu);
break;
case NETDEV_CHANGE:
rxe_set_port_state(rxe);
break;
case NETDEV_REBOOT:
case NETDEV_GOING_DOWN:
case NETDEV_CHANGEADDR:
case NETDEV_CHANGENAME:
case NETDEV_FEAT_CHANGE:
default:
pr_info("ignoring netdev event = %ld for %s\n",
event, ndev->name);
break;
}
ib_device_put(&rxe->ib_dev);
return NOTIFY_OK;
}
int dsa_slave_netdevice_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev;
int err = 0;
switch (event) {
case NETDEV_CHANGEUPPER:
dev = netdev_notifier_info_to_dev(ptr);
if (!dsa_slave_dev_check(dev))
goto out;
err = dsa_slave_master_changed(dev);
if (err && err != -EOPNOTSUPP)
netdev_warn(dev, "failed to reflect master change\n");
break;
}
out:
return NOTIFY_DONE;
}
static int bpf_offload_notification(struct notifier_block *notifier,
ulong event, void *ptr)
{
struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
ASSERT_RTNL();
switch (event) {
case NETDEV_UNREGISTER:
/* ignore namespace changes */
if (netdev->reg_state != NETREG_UNREGISTERING)
break;
down_write(&bpf_devs_lock);
bpf_offload_orphan_all_progs(netdev);
bpf_offload_orphan_all_maps(netdev);
up_write(&bpf_devs_lock);
break;
default:
break;
}
return NOTIFY_OK;
}
static int lowpan_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct inet6_dev *idev;
struct in6_addr addr;
int i;
if (dev->type != ARPHRD_6LOWPAN)
return NOTIFY_DONE;
idev = __in6_dev_get(dev);
if (!idev)
return NOTIFY_DONE;
switch (event) {
case NETDEV_UP:
case NETDEV_CHANGE:
/* (802.15.4 6LoWPAN short address slaac handling */
if (lowpan_is_ll(dev, LOWPAN_LLTYPE_IEEE802154) &&
addrconf_ifid_802154_6lowpan(addr.s6_addr + 8, dev) == 0) {
__ipv6_addr_set_half(&addr.s6_addr32[0],
htonl(0xFE800000), 0);
addrconf_add_linklocal(idev, &addr, 0);
}
break;
case NETDEV_DOWN:
for (i = 0; i < LOWPAN_IPHC_CTX_TABLE_SIZE; i++)
clear_bit(LOWPAN_IPHC_CTX_FLAG_ACTIVE,
&lowpan_dev(dev)->ctx.table[i].flags);
break;
default:
return NOTIFY_DONE;
}
return NOTIFY_OK;
}
/**
* i40iw_netdevice_event - system notifier for netdev events
* @notfier: not used
* @event: event for notifier
* @ptr: netdev
*/
int i40iw_netdevice_event(struct notifier_block *notifier,
unsigned long event,
void *ptr)
{
struct net_device *event_netdev;
struct net_device *netdev;
struct i40iw_device *iwdev;
struct i40iw_handler *hdl;
event_netdev = netdev_notifier_info_to_dev(ptr);
hdl = i40iw_find_netdev(event_netdev);
if (!hdl)
return NOTIFY_DONE;
iwdev = &hdl->device;
if (iwdev->init_state < RDMA_DEV_REGISTERED || iwdev->closing)
return NOTIFY_DONE;
netdev = iwdev->ldev->netdev;
if (netdev != event_netdev)
return NOTIFY_DONE;
iwdev->iw_status = 1;
switch (event) {
case NETDEV_DOWN:
iwdev->iw_status = 0;
/* Fall through */
case NETDEV_UP:
i40iw_port_ibevent(iwdev);
break;
default:
break;
}
return NOTIFY_DONE;
}
/*
* Handle changes in state of network devices enslaved to a bridge.
*
* Note: don't care about up/down if bridge itself is down, because
* port state is checked when bridge is brought up.
*/
static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct net_bridge_port *p;
struct net_bridge *br;
bool changed_addr;
int err;
/* register of bridge completed, add sysfs entries */
if ((dev->priv_flags & IFF_EBRIDGE) && event == NETDEV_REGISTER) {
br_sysfs_addbr(dev);
return NOTIFY_DONE;
}
/* not a port of a bridge */
p = br_port_get_rtnl(dev);
if (!p)
return NOTIFY_DONE;
br = p->br;
switch (event) {
case NETDEV_CHANGEMTU:
dev_set_mtu(br->dev, br_min_mtu(br));
break;
case NETDEV_CHANGEADDR:
spin_lock_bh(&br->lock);
br_fdb_changeaddr(p, dev->dev_addr);
changed_addr = br_stp_recalculate_bridge_id(br);
spin_unlock_bh(&br->lock);
if (changed_addr)
call_netdevice_notifiers(NETDEV_CHANGEADDR, br->dev);
break;
case NETDEV_CHANGE:
br_port_carrier_check(p);
break;
case NETDEV_FEAT_CHANGE:
netdev_update_features(br->dev);
break;
case NETDEV_DOWN:
spin_lock_bh(&br->lock);
if (br->dev->flags & IFF_UP)
br_stp_disable_port(p);
spin_unlock_bh(&br->lock);
break;
case NETDEV_UP:
if (netif_running(br->dev) && netif_oper_up(dev)) {
spin_lock_bh(&br->lock);
br_stp_enable_port(p);
spin_unlock_bh(&br->lock);
}
break;
case NETDEV_UNREGISTER:
br_del_if(br, dev);
break;
case NETDEV_CHANGENAME:
err = br_sysfs_renameif(p);
if (err)
return notifier_from_errno(err);
break;
case NETDEV_PRE_TYPE_CHANGE:
/* Forbid underlaying device to change its type. */
return NOTIFY_BAD;
case NETDEV_RESEND_IGMP:
/* Propagate to master device */
call_netdevice_notifiers(event, br->dev);
break;
}
/* Events that may cause spanning tree to refresh */
if (event == NETDEV_CHANGEADDR || event == NETDEV_UP ||
event == NETDEV_CHANGE || event == NETDEV_DOWN)
br_ifinfo_notify(RTM_NEWLINK, p);
return NOTIFY_DONE;
}
for(i=0; i<MAX_REQ_BATCH_SIZE; ++i){
gnom_tx(m_lw_pending_batches[batch_ind].tx_batch_ind, i, 1024);
}
#endif
return 0;
write_err:
printk("[GNoM_km]: Error on buffer recycle... (n_cpy=%d, call_back=%p, batch_id=%d, v_batch_id: %d)\n",
n_cpy, ixgbe_callback_recycle_grxb_batch, m_lw_pending_batches[batch_ind].batch_id, v_batch_id);
return 1;
}
// Structure and code borrowed from NTOP PF_RING to set hooks for GNoM_ND (Modified Intel IXGBE network driver).
static int gpu_notifier(struct notifier_block *this, unsigned long msg, void *data){
struct net_device *dev = netdev_notifier_info_to_dev(data);
ubc_gpu_hooks *hook;
if(dev != NULL) {
/* Skip non ethernet interfaces */
if( (dev->type != ARPHRD_ETHER)
&& (dev->type != ARPHRD_IEEE80211)
&& (dev->type != ARPHRD_IEEE80211_PRISM)
&& (dev->type != ARPHRD_IEEE80211_RADIOTAP)
&& strncmp(dev->name, "bond", 4)) {
return NOTIFY_DONE;
}
switch(msg) {
case NETDEV_PRE_UP:
case NETDEV_UP:
return NOTIFY_DONE;
}
static int xfrm_dev_down(struct net_device *dev)
{
if (dev->features & NETIF_F_HW_ESP)
xfrm_dev_state_flush(dev_net(dev), dev, true);
xfrm_policy_cache_flush();
return NOTIFY_DONE;
}
static int xfrm_dev_event(struct notifier_block *this, unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
switch (event) {
case NETDEV_REGISTER:
return xfrm_dev_register(dev);
case NETDEV_UNREGISTER:
return xfrm_dev_unregister(dev);
case NETDEV_FEAT_CHANGE:
return xfrm_dev_feat_change(dev);
case NETDEV_DOWN:
return xfrm_dev_down(dev);
}
return NOTIFY_DONE;
static int mpoa_event_listener(struct notifier_block *mpoa_notifier,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct mpoa_client *mpc;
struct lec_priv *priv;
if (!net_eq(dev_net(dev), &init_net))
return NOTIFY_DONE;
if (strncmp(dev->name, "lec", 3))
return NOTIFY_DONE; /* we are only interested in lec:s */
switch (event) {
case NETDEV_REGISTER: /* a new lec device was allocated */
priv = netdev_priv(dev);
if (priv->lane_version < 2)
break;
priv->lane2_ops->associate_indicator = lane2_assoc_ind;
mpc = find_mpc_by_itfnum(priv->itfnum);
if (mpc == NULL) {
dprintk("allocating new mpc for %s\n", dev->name);
mpc = alloc_mpc();
if (mpc == NULL) {
pr_info("no new mpc");
break;
}
}
mpc->dev_num = priv->itfnum;
mpc->dev = dev;
dev_hold(dev);
dprintk("(%s) was initialized\n", dev->name);
break;
case NETDEV_UNREGISTER:
/* the lec device was deallocated */
mpc = find_mpc_by_lec(dev);
if (mpc == NULL)
break;
dprintk("device (%s) was deallocated\n", dev->name);
stop_mpc(mpc);
dev_put(mpc->dev);
mpc->dev = NULL;
break;
case NETDEV_UP:
/* the dev was ifconfig'ed up */
mpc = find_mpc_by_lec(dev);
if (mpc == NULL)
break;
if (mpc->mpoad_vcc != NULL)
start_mpc(mpc, dev);
break;
case NETDEV_DOWN:
/* the dev was ifconfig'ed down */
/* this means that the flow of packets from the
* upper layer stops
*/
mpc = find_mpc_by_lec(dev);
if (mpc == NULL)
break;
if (mpc->mpoad_vcc != NULL)
stop_mpc(mpc);
break;
case NETDEV_REBOOT:
case NETDEV_CHANGE:
case NETDEV_CHANGEMTU:
case NETDEV_CHANGEADDR:
case NETDEV_GOING_DOWN:
break;
default:
break;
}
return NOTIFY_DONE;
}
static int netdev_callback(struct notifier_block *self,
unsigned long event, void *ctx)
{
struct net_device *dev;
struct net_device *dev_n = netdev_notifier_info_to_dev(ctx);
struct in_device *in_dev;
char *lo_if = "lo";
switch (event)
{
case NETDEV_UP:
case NETDEV_CHANGE:
case NETDEV_CHANGEADDR:
case NETDEV_NOTIFY_PEERS:
in_dev = __in_dev_get_rtnl(dev_n);
if (!in_dev) {
printk(KERN_INFO "not in dev, skip\n");
break;
}
if (dev_n->operstate == IF_OPER_UP) {
msleep( garp_delay );
if (debug == 1)
printk(KERN_INFO "send gratuitous arp from [%s]\n",
dev_n->name);
inetdev_send_gratuitous_arp(dev_n, in_dev);
}
if (send_all == 1)
{
if ( strcmp(dev_n->name, lo_if) == 0){
if (debug == 1)
printk(KERN_INFO "notification from lo, skip\n");
break;
}
dev = first_net_device(&init_net);
read_lock(&dev_base_lock);
while (dev) {
if (debug == 1)
printk(KERN_INFO
"found [%s], notification from [%s]\n",
dev->name, dev_n->name);
if (dev->operstate == IF_OPER_UP) {
if (debug == 1)
printk(KERN_INFO
"[%s] type [%d] state [%d] is up\n",
dev->name, dev->type, dev->operstate);
} else {
if (debug == 1)
printk(KERN_INFO
"[%s] type [%d] state [%d] unknown oper state\n",
dev->name, dev->type, dev->operstate);
}
if (strcmp(dev->name, lo_if) == 0){
if (debug == 1)
printk(KERN_INFO "skip lo\n");
dev = next_net_device(dev);
continue;
}
in_dev = __in_dev_get_rtnl(dev);
if (!in_dev) {
if (debug == 1)
printk(KERN_INFO "not in dev\n");
dev = next_net_device(dev);
continue;
}
if (dev->operstate == IF_OPER_UP) {
inetdev_send_gratuitous_arp(dev, in_dev);
}
dev = next_net_device(dev);
}
read_unlock(&dev_base_lock);
}
break;
}
if (debug == 1)
{
switch (event)
{
case NETDEV_UP:
printk(KERN_INFO "got NETDEV_UP\n");
break;
case NETDEV_DOWN:
printk(KERN_INFO "got NETDEV_DOWN\n");
break;
case NETDEV_REBOOT:
printk(KERN_INFO "got NETDEV_REBOOT\n");
break;
case NETDEV_CHANGE:
printk(KERN_INFO "got NETDEV_CHANGE\n");
break;
case NETDEV_REGISTER:
printk(KERN_INFO "got NETDEV_REGISTER\n");
break;
case NETDEV_UNREGISTER:
printk(KERN_INFO "got NETDEV_UNREGISTER\n");
break;
case NETDEV_CHANGEMTU:
printk(KERN_INFO "got NETDEV_CHANGEMTU\n");
break;
case NETDEV_CHANGEADDR:
printk(KERN_INFO "got NETDEV_CHANGEADDR\n");
break;
case NETDEV_GOING_DOWN:
printk(KERN_INFO "got NETDEV_GOING_DOWN\n");
break;
case NETDEV_CHANGENAME:
printk(KERN_INFO "got NETDEV_CHANGENAME\n");
break;
case NETDEV_FEAT_CHANGE:
printk(KERN_INFO "got NETDEV_FEAT_CHANGE\n");
break;
case NETDEV_BONDING_FAILOVER:
printk(KERN_INFO "got NETDEV_BONDING_FAILOVER\n");
break;
case NETDEV_PRE_UP:
printk(KERN_INFO "got NETDEV_PRE_UP\n");
break;
case NETDEV_PRE_TYPE_CHANGE:
printk(KERN_INFO "got NETDEV_PRE_TYPE_CHANGE\n");
break;
case NETDEV_POST_TYPE_CHANGE:
printk(KERN_INFO "got NETDEV_POST_TYPE_CHANGE\n");
break;
case NETDEV_POST_INIT:
printk(KERN_INFO "got NETDEV_POST_INIT\n");
break;
case NETDEV_UNREGISTER_FINAL:
printk(KERN_INFO "got NETDEV_UNREGISTER_FINAL\n");
break;
case NETDEV_RELEASE:
printk(KERN_INFO "got NETDEV_RELEASE\n");
break;
case NETDEV_NOTIFY_PEERS:
printk(KERN_INFO "got NETDEV_NOTIFY_PEERS\n");
break;
case NETDEV_JOIN:
printk(KERN_INFO "got NETDEV_JOIN\n");
break;
#ifdef NETDEV_PRECHANGEMTU
case NETDEV_CHANGEUPPER:
printk(KERN_INFO "got NETDEV_CHANGEUPPER\n");
break;
case NETDEV_RESEND_IGMP:
printk(KERN_INFO "got NETDEV_RESEND_IGMP\n");
break;
case NETDEV_PRECHANGEMTU:
printk(KERN_INFO "got NETDEV_PRECHANGEMTU\n");
break;
#endif
#ifdef NETDEV_CHANGEINFODATA
case NETDEV_CHANGEINFODATA:
printk(KERN_INFO "got NETDEV_CHANGEINFODATA\n");
break;
#endif
default:
printk(KERN_INFO "got unknown NETDEV event\n");
}
}
return 0;
}
static int vlan_device_event(struct notifier_block *unused, unsigned long event,
void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct vlan_group *grp;
struct vlan_info *vlan_info;
int i, flgs;
struct net_device *vlandev;
struct vlan_dev_priv *vlan;
bool last = false;
LIST_HEAD(list);
if (is_vlan_dev(dev))
__vlan_device_event(dev, event);
if ((event == NETDEV_UP) &&
(dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) {
pr_info("adding VLAN 0 to HW filter on device %s\n",
dev->name);
vlan_vid_add(dev, htons(ETH_P_8021Q), 0);
}
vlan_info = rtnl_dereference(dev->vlan_info);
if (!vlan_info)
goto out;
grp = &vlan_info->grp;
/* It is OK that we do not hold the group lock right now,
* as we run under the RTNL lock.
*/
switch (event) {
case NETDEV_CHANGE:
/* Propagate real device state to vlan devices */
vlan_group_for_each_dev(grp, i, vlandev)
netif_stacked_transfer_operstate(dev, vlandev);
break;
case NETDEV_CHANGEADDR:
/* Adjust unicast filters on underlying device */
vlan_group_for_each_dev(grp, i, vlandev) {
flgs = vlandev->flags;
if (!(flgs & IFF_UP))
continue;
vlan_sync_address(dev, vlandev);
}
break;
case NETDEV_CHANGEMTU:
vlan_group_for_each_dev(grp, i, vlandev) {
if (vlandev->mtu <= dev->mtu)
continue;
dev_set_mtu(vlandev, dev->mtu);
}
break;
case NETDEV_FEAT_CHANGE:
/* Propagate device features to underlying device */
vlan_group_for_each_dev(grp, i, vlandev)
vlan_transfer_features(dev, vlandev);
break;
case NETDEV_DOWN:
if (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)
vlan_vid_del(dev, htons(ETH_P_8021Q), 0);
/* Put all VLANs for this dev in the down state too. */
vlan_group_for_each_dev(grp, i, vlandev) {
flgs = vlandev->flags;
if (!(flgs & IFF_UP))
continue;
vlan = vlan_dev_priv(vlandev);
if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
dev_change_flags(vlandev, flgs & ~IFF_UP);
netif_stacked_transfer_operstate(dev, vlandev);
}
