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Diffstat (limited to 'net/8021q/vlan.c')
-rw-r--r--net/8021q/vlan.c126
1 files changed, 46 insertions, 80 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 5471628d3ff..efea35b02e7 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -51,27 +51,6 @@ const char vlan_version[] = DRV_VERSION;
/* End of global variables definitions. */
-static void vlan_group_free(struct vlan_group *grp)
-{
- int i;
-
- for (i = 0; i < VLAN_GROUP_ARRAY_SPLIT_PARTS; i++)
- kfree(grp->vlan_devices_arrays[i]);
- kfree(grp);
-}
-
-static struct vlan_group *vlan_group_alloc(struct net_device *real_dev)
-{
- struct vlan_group *grp;
-
- grp = kzalloc(sizeof(struct vlan_group), GFP_KERNEL);
- if (!grp)
- return NULL;
-
- grp->real_dev = real_dev;
- return grp;
-}
-
static int vlan_group_prealloc_vid(struct vlan_group *vg, u16 vlan_id)
{
struct net_device **array;
@@ -92,32 +71,29 @@ static int vlan_group_prealloc_vid(struct vlan_group *vg, u16 vlan_id)
return 0;
}
-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, struct list_head *head)
{
- struct vlan_dev_info *vlan = vlan_dev_info(dev);
+ struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
struct net_device *real_dev = vlan->real_dev;
- const struct net_device_ops *ops = real_dev->netdev_ops;
+ struct vlan_info *vlan_info;
struct vlan_group *grp;
u16 vlan_id = vlan->vlan_id;
ASSERT_RTNL();
- grp = rtnl_dereference(real_dev->vlgrp);
- BUG_ON(!grp);
+ vlan_info = rtnl_dereference(real_dev->vlan_info);
+ BUG_ON(!vlan_info);
+
+ grp = &vlan_info->grp;
/* Take it out of our own structures, but be sure to interlock with
* HW accelerating devices or SW vlan input packet processing if
* VLAN is not 0 (leave it there for 802.1p).
*/
- if (vlan_id && (real_dev->features & NETIF_F_HW_VLAN_FILTER))
- ops->ndo_vlan_rx_kill_vid(real_dev, vlan_id);
+ if (vlan_id)
+ vlan_vid_del(real_dev, vlan_id);
- grp->nr_vlans--;
+ grp->nr_vlan_devs--;
if (vlan->flags & VLAN_FLAG_GVRP)
vlan_gvrp_request_leave(dev);
@@ -129,16 +105,9 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
*/
unregister_netdevice_queue(dev, head);
- /* If the group is now empty, kill off the group. */
- if (grp->nr_vlans == 0) {
+ if (grp->nr_vlan_devs == 0)
vlan_gvrp_uninit_applicant(real_dev);
- RCU_INIT_POINTER(real_dev->vlgrp, NULL);
-
- /* Free the group, after all cpu's are done. */
- call_rcu(&grp->rcu, vlan_rcu_free);
- }
-
/* Get rid of the vlan's reference to real_dev */
dev_put(real_dev);
}
@@ -167,21 +136,26 @@ int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
int register_vlan_dev(struct net_device *dev)
{
- struct vlan_dev_info *vlan = vlan_dev_info(dev);
+ struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
struct net_device *real_dev = vlan->real_dev;
- const struct net_device_ops *ops = real_dev->netdev_ops;
u16 vlan_id = vlan->vlan_id;
- struct vlan_group *grp, *ngrp = NULL;
+ struct vlan_info *vlan_info;
+ struct vlan_group *grp;
int err;
- grp = rtnl_dereference(real_dev->vlgrp);
- if (!grp) {
- ngrp = grp = vlan_group_alloc(real_dev);
- if (!grp)
- return -ENOBUFS;
+ err = vlan_vid_add(real_dev, vlan_id);
+ if (err)
+ return err;
+
+ vlan_info = rtnl_dereference(real_dev->vlan_info);
+ /* vlan_info should be there now. vlan_vid_add took care of it */
+ BUG_ON(!vlan_info);
+
+ grp = &vlan_info->grp;
+ if (grp->nr_vlan_devs == 0) {
err = vlan_gvrp_init_applicant(real_dev);
if (err < 0)
- goto out_free_group;
+ goto out_vid_del;
}
err = vlan_group_prealloc_vid(grp, vlan_id);
@@ -192,7 +166,7 @@ int register_vlan_dev(struct net_device *dev)
if (err < 0)
goto out_uninit_applicant;
- /* Account for reference in struct vlan_dev_info */
+ /* Account for reference in struct vlan_dev_priv */
dev_hold(real_dev);
netif_stacked_transfer_operstate(real_dev, dev);
@@ -202,24 +176,15 @@ int register_vlan_dev(struct net_device *dev)
* it into our local structure.
*/
vlan_group_set_device(grp, vlan_id, dev);
- grp->nr_vlans++;
-
- if (ngrp) {
- rcu_assign_pointer(real_dev->vlgrp, ngrp);
- }
- if (real_dev->features & NETIF_F_HW_VLAN_FILTER)
- ops->ndo_vlan_rx_add_vid(real_dev, vlan_id);
+ grp->nr_vlan_devs++;
return 0;
out_uninit_applicant:
- if (ngrp)
+ if (grp->nr_vlan_devs == 0)
vlan_gvrp_uninit_applicant(real_dev);
-out_free_group:
- if (ngrp) {
- /* Free the group, after all cpu's are done. */
- call_rcu(&ngrp->rcu, vlan_rcu_free);
- }
+out_vid_del:
+ vlan_vid_del(real_dev, vlan_id);
return err;
}
@@ -267,7 +232,7 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id);
}
- new_dev = alloc_netdev(sizeof(struct vlan_dev_info), name, vlan_setup);
+ new_dev = alloc_netdev(sizeof(struct vlan_dev_priv), name, vlan_setup);
if (new_dev == NULL)
return -ENOBUFS;
@@ -278,10 +243,10 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
*/
new_dev->mtu = real_dev->mtu;
- vlan_dev_info(new_dev)->vlan_id = vlan_id;
- vlan_dev_info(new_dev)->real_dev = real_dev;
- vlan_dev_info(new_dev)->dent = NULL;
- vlan_dev_info(new_dev)->flags = VLAN_FLAG_REORDER_HDR;
+ vlan_dev_priv(new_dev)->vlan_id = vlan_id;
+ vlan_dev_priv(new_dev)->real_dev = real_dev;
+ vlan_dev_priv(new_dev)->dent = NULL;
+ vlan_dev_priv(new_dev)->flags = VLAN_FLAG_REORDER_HDR;
new_dev->rtnl_link_ops = &vlan_link_ops;
err = register_vlan_dev(new_dev);
@@ -298,7 +263,7 @@ out_free_newdev:
static void vlan_sync_address(struct net_device *dev,
struct net_device *vlandev)
{
- struct vlan_dev_info *vlan = vlan_dev_info(vlandev);
+ struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
/* May be called without an actual change */
if (!compare_ether_addr(vlan->real_dev_addr, dev->dev_addr))
@@ -360,25 +325,26 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
{
struct net_device *dev = ptr;
struct vlan_group *grp;
+ struct vlan_info *vlan_info;
int i, flgs;
struct net_device *vlandev;
- struct vlan_dev_info *vlan;
+ struct vlan_dev_priv *vlan;
LIST_HEAD(list);
if (is_vlan_dev(dev))
__vlan_device_event(dev, event);
if ((event == NETDEV_UP) &&
- (dev->features & NETIF_F_HW_VLAN_FILTER) &&
- dev->netdev_ops->ndo_vlan_rx_add_vid) {
+ (dev->features & NETIF_F_HW_VLAN_FILTER)) {
pr_info("adding VLAN 0 to HW filter on device %s\n",
dev->name);
- dev->netdev_ops->ndo_vlan_rx_add_vid(dev, 0);
+ vlan_vid_add(dev, 0);
}
- grp = rtnl_dereference(dev->vlgrp);
- if (!grp)
+ 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.
@@ -447,7 +413,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (!(flgs & IFF_UP))
continue;
- vlan = vlan_dev_info(vlandev);
+ 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);
@@ -465,7 +431,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (flgs & IFF_UP)
continue;
- vlan = vlan_dev_info(vlandev);
+ 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);
@@ -482,9 +448,9 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (!vlandev)
continue;
- /* unregistration of last vlan destroys group, abort
+ /* removal of last vid destroys vlan_info, abort
* afterwards */
- if (grp->nr_vlans == 1)
+ if (vlan_info->nr_vids == 1)
i = VLAN_N_VID;
unregister_vlan_dev(vlandev, &list);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-22 18:42:58 +0000