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Diffstat (limited to 'net/8021q/vlan.c')
-rw-r--r--net/8021q/vlan.c145
1 files changed, 62 insertions, 83 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index a18714469bf..44ebd5c2cd4 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -51,14 +51,18 @@ const char vlan_version[] = DRV_VERSION;
/* End of global variables definitions. */
-static int vlan_group_prealloc_vid(struct vlan_group *vg, u16 vlan_id)
+static int vlan_group_prealloc_vid(struct vlan_group *vg,
+ __be16 vlan_proto, u16 vlan_id)
{
struct net_device **array;
+ unsigned int pidx, vidx;
unsigned int size;
ASSERT_RTNL();
- array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
+ pidx = vlan_proto_idx(vlan_proto);
+ vidx = vlan_id / VLAN_GROUP_ARRAY_PART_LEN;
+ array = vg->vlan_devices_arrays[pidx][vidx];
if (array != NULL)
return 0;
@@ -67,7 +71,7 @@ static int vlan_group_prealloc_vid(struct vlan_group *vg, u16 vlan_id)
if (array == NULL)
return -ENOBUFS;
- vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN] = array;
+ vg->vlan_devices_arrays[pidx][vidx] = array;
return 0;
}
@@ -86,13 +90,6 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
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)
- vlan_vid_del(real_dev, vlan_id);
-
grp->nr_vlan_devs--;
if (vlan->flags & VLAN_FLAG_MVRP)
@@ -100,25 +97,33 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
if (vlan->flags & VLAN_FLAG_GVRP)
vlan_gvrp_request_leave(dev);
- vlan_group_set_device(grp, vlan_id, NULL);
+ vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, NULL);
+
+ netdev_upper_dev_unlink(real_dev, dev);
/* Because unregister_netdevice_queue() makes sure at least one rcu
* grace period is respected before device freeing,
* we dont need to call synchronize_net() here.
*/
unregister_netdevice_queue(dev, head);
- netdev_upper_dev_unlink(real_dev, dev);
-
if (grp->nr_vlan_devs == 0) {
vlan_mvrp_uninit_applicant(real_dev);
vlan_gvrp_uninit_applicant(real_dev);
}
+ /* 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)
+ vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
+
/* Get rid of the vlan's reference to real_dev */
dev_put(real_dev);
}
-int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
+int vlan_check_real_dev(struct net_device *real_dev,
+ __be16 protocol, u16 vlan_id)
{
const char *name = real_dev->name;
@@ -127,7 +132,7 @@ int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
return -EOPNOTSUPP;
}
- if (vlan_find_dev(real_dev, vlan_id) != NULL)
+ if (vlan_find_dev(real_dev, protocol, vlan_id) != NULL)
return -EEXIST;
return 0;
@@ -142,7 +147,7 @@ int register_vlan_dev(struct net_device *dev)
struct vlan_group *grp;
int err;
- err = vlan_vid_add(real_dev, vlan_id);
+ err = vlan_vid_add(real_dev, vlan->vlan_proto, vlan_id);
if (err)
return err;
@@ -160,17 +165,18 @@ int register_vlan_dev(struct net_device *dev)
goto out_uninit_gvrp;
}
- err = vlan_group_prealloc_vid(grp, vlan_id);
+ err = vlan_group_prealloc_vid(grp, vlan->vlan_proto, vlan_id);
if (err < 0)
goto out_uninit_mvrp;
- err = netdev_upper_dev_link(real_dev, dev);
- if (err)
- goto out_uninit_mvrp;
-
+ vlan->nest_level = dev_get_nest_level(real_dev, is_vlan_dev) + 1;
err = register_netdevice(dev);
if (err < 0)
- goto out_upper_dev_unlink;
+ goto out_uninit_mvrp;
+
+ err = netdev_upper_dev_link(real_dev, dev);
+ if (err)
+ goto out_unregister_netdev;
/* Account for reference in struct vlan_dev_priv */
dev_hold(real_dev);
@@ -181,13 +187,13 @@ int register_vlan_dev(struct net_device *dev)
/* So, got the sucker initialized, now lets place
* it into our local structure.
*/
- vlan_group_set_device(grp, vlan_id, dev);
+ vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, dev);
grp->nr_vlan_devs++;
return 0;
-out_upper_dev_unlink:
- netdev_upper_dev_unlink(real_dev, dev);
+out_unregister_netdev:
+ unregister_netdevice(dev);
out_uninit_mvrp:
if (grp->nr_vlan_devs == 0)
vlan_mvrp_uninit_applicant(real_dev);
@@ -195,7 +201,7 @@ out_uninit_gvrp:
if (grp->nr_vlan_devs == 0)
vlan_gvrp_uninit_applicant(real_dev);
out_vid_del:
- vlan_vid_del(real_dev, vlan_id);
+ vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
return err;
}
@@ -205,6 +211,7 @@ out_vid_del:
static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
{
struct net_device *new_dev;
+ struct vlan_dev_priv *vlan;
struct net *net = dev_net(real_dev);
struct vlan_net *vn = net_generic(net, vlan_net_id);
char name[IFNAMSIZ];
@@ -213,7 +220,7 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
if (vlan_id >= VLAN_VID_MASK)
return -ERANGE;
- err = vlan_check_real_dev(real_dev, vlan_id);
+ err = vlan_check_real_dev(real_dev, htons(ETH_P_8021Q), vlan_id);
if (err < 0)
return err;
@@ -255,10 +262,12 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
new_dev->mtu = real_dev->mtu;
new_dev->priv_flags |= (real_dev->priv_flags & IFF_UNICAST_FLT);
- 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;
+ vlan = vlan_dev_priv(new_dev);
+ vlan->vlan_proto = htons(ETH_P_8021Q);
+ vlan->vlan_id = vlan_id;
+ vlan->real_dev = real_dev;
+ vlan->dent = NULL;
+ vlan->flags = VLAN_FLAG_REORDER_HDR;
new_dev->rtnl_link_ops = &vlan_link_ops;
err = register_vlan_dev(new_dev);
@@ -293,15 +302,17 @@ static void vlan_sync_address(struct net_device *dev,
!ether_addr_equal(vlandev->dev_addr, dev->dev_addr))
dev_uc_add(dev, vlandev->dev_addr);
- memcpy(vlan->real_dev_addr, dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(vlan->real_dev_addr, dev->dev_addr);
}
static void vlan_transfer_features(struct net_device *dev,
struct net_device *vlandev)
{
+ struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
+
vlandev->gso_max_size = dev->gso_max_size;
- if (dev->features & NETIF_F_HW_VLAN_TX)
+ if (vlan_hw_offload_capable(dev->features, vlan->vlan_proto))
vlandev->hard_header_len = dev->hard_header_len;
else
vlandev->hard_header_len = dev->hard_header_len + VLAN_HLEN;
@@ -335,22 +346,23 @@ static void __vlan_device_event(struct net_device *dev, unsigned long event)
static int vlan_device_event(struct notifier_block *unused, unsigned long event,
void *ptr)
{
- struct net_device *dev = 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_FILTER)) {
+ (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, 0);
+ vlan_vid_add(dev, htons(ETH_P_8021Q), 0);
}
vlan_info = rtnl_dereference(dev->vlan_info);
@@ -365,22 +377,13 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
switch (event) {
case NETDEV_CHANGE:
/* Propagate real device state to vlan devices */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev)
netif_stacked_transfer_operstate(dev, vlandev);
- }
break;
case NETDEV_CHANGEADDR:
/* Adjust unicast filters on underlying device */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev) {
flgs = vlandev->flags;
if (!(flgs & IFF_UP))
continue;
@@ -390,11 +393,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
break;
case NETDEV_CHANGEMTU:
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev) {
if (vlandev->mtu <= dev->mtu)
continue;
@@ -404,26 +403,16 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
case NETDEV_FEAT_CHANGE:
/* Propagate device features to underlying device */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev)
vlan_transfer_features(dev, vlandev);
- }
-
break;
case NETDEV_DOWN:
- if (dev->features & NETIF_F_HW_VLAN_FILTER)
- vlan_vid_del(dev, 0);
+ 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. */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev) {
flgs = vlandev->flags;
if (!(flgs & IFF_UP))
continue;
@@ -437,11 +426,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
case NETDEV_UP:
/* Put all VLANs for this dev in the up state too. */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev) {
flgs = vlandev->flags;
if (flgs & IFF_UP)
continue;
@@ -458,17 +443,15 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (dev->reg_state != NETREG_UNREGISTERING)
break;
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev) {
/* removal of last vid destroys vlan_info, abort
* afterwards */
if (vlan_info->nr_vids == 1)
- i = VLAN_N_VID;
+ last = true;
unregister_vlan_dev(vlandev, &list);
+ if (last)
+ break;
}
unregister_netdevice_many(&list);
break;
@@ -481,14 +464,10 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
case NETDEV_NOTIFY_PEERS:
case NETDEV_BONDING_FAILOVER:
+ case NETDEV_RESEND_IGMP:
/* Propagate to vlan devices */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev)
call_netdevice_notifiers(event, vlandev);
- }
break;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 11:28:13 +0000