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Diffstat (limited to 'net/8021q/vlan.c')
-rw-r--r--net/8021q/vlan.c90
1 files changed, 29 insertions, 61 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index a29c5ab5815c..33f90e7362cc 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -41,7 +41,7 @@
/* Global VLAN variables */
-int vlan_net_id;
+int vlan_net_id __read_mostly;
/* Our listing of VLAN group(s) */
static struct hlist_head vlan_group_hash[VLAN_GRP_HASH_SIZE];
@@ -140,7 +140,7 @@ static void vlan_rcu_free(struct rcu_head *rcu)
vlan_group_free(container_of(rcu, struct vlan_group, rcu));
}
-void unregister_vlan_dev(struct net_device *dev)
+void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct net_device *real_dev = vlan->real_dev;
@@ -159,12 +159,13 @@ void unregister_vlan_dev(struct net_device *dev)
if (real_dev->features & NETIF_F_HW_VLAN_FILTER)
ops->ndo_vlan_rx_kill_vid(real_dev, vlan_id);
- vlan_group_set_device(grp, vlan_id, NULL);
grp->nr_vlans--;
- synchronize_net();
+ vlan_group_set_device(grp, vlan_id, NULL);
+ if (!grp->killall)
+ synchronize_net();
- unregister_netdevice(dev);
+ unregister_netdevice_queue(dev, head);
/* If the group is now empty, kill off the group. */
if (grp->nr_vlans == 0) {
@@ -183,27 +184,6 @@ void unregister_vlan_dev(struct net_device *dev)
dev_put(real_dev);
}
-static void vlan_transfer_operstate(const struct net_device *dev,
- struct net_device *vlandev)
-{
- /* Have to respect userspace enforced dormant state
- * of real device, also must allow supplicant running
- * on VLAN device
- */
- if (dev->operstate == IF_OPER_DORMANT)
- netif_dormant_on(vlandev);
- else
- netif_dormant_off(vlandev);
-
- if (netif_carrier_ok(dev)) {
- if (!netif_carrier_ok(vlandev))
- netif_carrier_on(vlandev);
- } else {
- if (netif_carrier_ok(vlandev))
- netif_carrier_off(vlandev);
- }
-}
-
int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
{
const char *name = real_dev->name;
@@ -261,7 +241,7 @@ int register_vlan_dev(struct net_device *dev)
/* Account for reference in struct vlan_dev_info */
dev_hold(real_dev);
- vlan_transfer_operstate(real_dev, dev);
+ netif_stacked_transfer_operstate(real_dev, dev);
linkwatch_fire_event(dev); /* _MUST_ call rfc2863_policy() */
/* So, got the sucker initialized, now lets place
@@ -430,6 +410,8 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
struct vlan_group *grp;
int i, flgs;
struct net_device *vlandev;
+ struct vlan_dev_info *vlan;
+ LIST_HEAD(list);
if (is_vlan_dev(dev))
__vlan_device_event(dev, event);
@@ -450,7 +432,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (!vlandev)
continue;
- vlan_transfer_operstate(dev, vlandev);
+ netif_stacked_transfer_operstate(dev, vlandev);
}
break;
@@ -505,8 +487,10 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (!(flgs & IFF_UP))
continue;
- dev_change_flags(vlandev, flgs & ~IFF_UP);
- vlan_transfer_operstate(dev, vlandev);
+ vlan = vlan_dev_info(vlandev);
+ if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
+ dev_change_flags(vlandev, flgs & ~IFF_UP);
+ netif_stacked_transfer_operstate(dev, vlandev);
}
break;
@@ -521,13 +505,17 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (flgs & IFF_UP)
continue;
- dev_change_flags(vlandev, flgs | IFF_UP);
- vlan_transfer_operstate(dev, vlandev);
+ vlan = vlan_dev_info(vlandev);
+ if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
+ dev_change_flags(vlandev, flgs | IFF_UP);
+ netif_stacked_transfer_operstate(dev, vlandev);
}
break;
case NETDEV_UNREGISTER:
/* Delete all VLANs for this dev. */
+ grp->killall = 1;
+
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
vlandev = vlan_group_get_device(grp, i);
if (!vlandev)
@@ -538,8 +526,9 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (grp->nr_vlans == 1)
i = VLAN_GROUP_ARRAY_LEN;
- unregister_vlan_dev(vlandev);
+ unregister_vlan_dev(vlandev, &list);
}
+ unregister_netdevice_many(&list);
break;
}
@@ -645,7 +634,7 @@ static int vlan_ioctl_handler(struct net *net, void __user *arg)
err = -EPERM;
if (!capable(CAP_NET_ADMIN))
break;
- unregister_vlan_dev(dev);
+ unregister_vlan_dev(dev, NULL);
err = 0;
break;
@@ -676,47 +665,26 @@ out:
static int vlan_init_net(struct net *net)
{
+ struct vlan_net *vn = net_generic(net, vlan_net_id);
int err;
- struct vlan_net *vn;
-
- err = -ENOMEM;
- vn = kzalloc(sizeof(struct vlan_net), GFP_KERNEL);
- if (vn == NULL)
- goto err_alloc;
-
- err = net_assign_generic(net, vlan_net_id, vn);
- if (err < 0)
- goto err_assign;
vn->name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD;
err = vlan_proc_init(net);
- if (err < 0)
- goto err_proc;
-
- return 0;
-err_proc:
- /* nothing */
-err_assign:
- kfree(vn);
-err_alloc:
return err;
}
static void vlan_exit_net(struct net *net)
{
- struct vlan_net *vn;
-
- vn = net_generic(net, vlan_net_id);
- rtnl_kill_links(net, &vlan_link_ops);
vlan_proc_cleanup(net);
- kfree(vn);
}
static struct pernet_operations vlan_net_ops = {
.init = vlan_init_net,
.exit = vlan_exit_net,
+ .id = &vlan_net_id,
+ .size = sizeof(struct vlan_net),
};
static int __init vlan_proto_init(void)
@@ -726,7 +694,7 @@ static int __init vlan_proto_init(void)
pr_info("%s v%s %s\n", vlan_fullname, vlan_version, vlan_copyright);
pr_info("All bugs added by %s\n", vlan_buggyright);
- err = register_pernet_gen_device(&vlan_net_id, &vlan_net_ops);
+ err = register_pernet_subsys(&vlan_net_ops);
if (err < 0)
goto err0;
@@ -751,7 +719,7 @@ err4:
err3:
unregister_netdevice_notifier(&vlan_notifier_block);
err2:
- unregister_pernet_gen_device(vlan_net_id, &vlan_net_ops);
+ unregister_pernet_subsys(&vlan_net_ops);
err0:
return err;
}
@@ -771,7 +739,7 @@ static void __exit vlan_cleanup_module(void)
for (i = 0; i < VLAN_GRP_HASH_SIZE; i++)
BUG_ON(!hlist_empty(&vlan_group_hash[i]));
- unregister_pernet_gen_device(vlan_net_id, &vlan_net_ops);
+ unregister_pernet_subsys(&vlan_net_ops);
rcu_barrier(); /* Wait for completion of call_rcu()'s */
vlan_gvrp_uninit();
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.