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-rw-r--r--include/linux/if_vlan.h1
-rw-r--r--net/8021q/vlan.c43
-rw-r--r--net/8021q/vlan.h1
-rw-r--r--net/8021q/vlan_dev.c57
4 files changed, 57 insertions, 45 deletions
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index c7912876a210..61a57dc2ac99 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -135,6 +135,7 @@ struct vlan_dev_info {
int old_allmulti; /* similar to above. */
int old_promiscuity; /* similar to above. */
struct net_device *real_dev; /* the underlying device/interface */
+ unsigned char real_dev_addr[ETH_ALEN];
struct proc_dir_entry *dent; /* Holds the proc data */
unsigned long cnt_inc_headroom_on_tx; /* How many times did we have to grow the skb on TX. */
unsigned long cnt_encap_on_xmit; /* How many times did we have to encapsulate the skb on TX. */
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index e7583eea6fda..b463ba47024d 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -345,12 +345,8 @@ static int vlan_dev_init(struct net_device *dev)
(1<<__LINK_STATE_DORMANT))) |
(1<<__LINK_STATE_PRESENT);
- /* TODO: maybe just assign it to be ETHERNET? */
- dev->type = real_dev->type;
-
memcpy(dev->broadcast, real_dev->broadcast, real_dev->addr_len);
memcpy(dev->dev_addr, real_dev->dev_addr, real_dev->addr_len);
- dev->addr_len = real_dev->addr_len;
if (real_dev->features & NETIF_F_HW_VLAN_TX) {
dev->hard_header = real_dev->hard_header;
@@ -364,6 +360,7 @@ static int vlan_dev_init(struct net_device *dev)
dev->rebuild_header = vlan_dev_rebuild_header;
}
dev->hard_header_parse = real_dev->hard_header_parse;
+ dev->hard_header_cache = NULL;
lockdep_set_class(&dev->_xmit_lock, &vlan_netdev_xmit_lock_key);
return 0;
@@ -373,6 +370,8 @@ void vlan_setup(struct net_device *new_dev)
{
SET_MODULE_OWNER(new_dev);
+ ether_setup(new_dev);
+
/* new_dev->ifindex = 0; it will be set when added to
* the global list.
* iflink is set as well.
@@ -392,7 +391,6 @@ void vlan_setup(struct net_device *new_dev)
new_dev->init = vlan_dev_init;
new_dev->open = vlan_dev_open;
new_dev->stop = vlan_dev_stop;
- new_dev->set_mac_address = vlan_dev_set_mac_address;
new_dev->set_multicast_list = vlan_dev_set_multicast_list;
new_dev->destructor = free_netdev;
new_dev->do_ioctl = vlan_dev_ioctl;
@@ -592,6 +590,30 @@ out_free_newdev:
return err;
}
+static void vlan_sync_address(struct net_device *dev,
+ struct net_device *vlandev)
+{
+ struct vlan_dev_info *vlan = VLAN_DEV_INFO(vlandev);
+
+ /* May be called without an actual change */
+ if (!compare_ether_addr(vlan->real_dev_addr, dev->dev_addr))
+ return;
+
+ /* vlan address was different from the old address and is equal to
+ * the new address */
+ if (compare_ether_addr(vlandev->dev_addr, vlan->real_dev_addr) &&
+ !compare_ether_addr(vlandev->dev_addr, dev->dev_addr))
+ dev_unicast_delete(dev, vlandev->dev_addr, ETH_ALEN);
+
+ /* vlan address was equal to the old address and is different from
+ * the new address */
+ if (!compare_ether_addr(vlandev->dev_addr, vlan->real_dev_addr) &&
+ compare_ether_addr(vlandev->dev_addr, dev->dev_addr))
+ dev_unicast_add(dev, vlandev->dev_addr, ETH_ALEN);
+
+ memcpy(vlan->real_dev_addr, dev->dev_addr, ETH_ALEN);
+}
+
static int vlan_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
{
struct net_device *dev = ptr;
@@ -618,6 +640,17 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
}
break;
+ case NETDEV_CHANGEADDR:
+ /* Adjust unicast filters on underlying device */
+ for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ vlandev = vlan_group_get_device(grp, i);
+ if (!vlandev)
+ continue;
+
+ vlan_sync_address(dev, vlandev);
+ }
+ break;
+
case NETDEV_DOWN:
/* Put all VLANs for this dev in the down state too. */
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index fe6bb0f7d275..62ce1c519aab 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -58,7 +58,6 @@ int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev);
int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, struct net_device *dev);
int vlan_dev_change_mtu(struct net_device *dev, int new_mtu);
-int vlan_dev_set_mac_address(struct net_device *dev, void* addr);
int vlan_dev_open(struct net_device* dev);
int vlan_dev_stop(struct net_device* dev);
int vlan_dev_ioctl(struct net_device* dev, struct ifreq *ifr, int cmd);
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 95afe387b952..d4a62d1b52b4 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -612,44 +612,6 @@ void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result)
*result = VLAN_DEV_INFO(dev)->vlan_id;
}
-int vlan_dev_set_mac_address(struct net_device *dev, void *addr_struct_p)
-{
- struct sockaddr *addr = (struct sockaddr *)(addr_struct_p);
- int i;
-
- if (netif_running(dev))
- return -EBUSY;
-
- memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
-
- printk("%s: Setting MAC address to ", dev->name);
- for (i = 0; i < 6; i++)
- printk(" %2.2x", dev->dev_addr[i]);
- printk(".\n");
-
- if (memcmp(VLAN_DEV_INFO(dev)->real_dev->dev_addr,
- dev->dev_addr,
- dev->addr_len) != 0) {
- if (!(VLAN_DEV_INFO(dev)->real_dev->flags & IFF_PROMISC)) {
- int flgs = VLAN_DEV_INFO(dev)->real_dev->flags;
-
- /* Increment our in-use promiscuity counter */
- dev_set_promiscuity(VLAN_DEV_INFO(dev)->real_dev, 1);
-
- /* Make PROMISC visible to the user. */
- flgs |= IFF_PROMISC;
- printk("VLAN (%s): Setting underlying device (%s) to promiscious mode.\n",
- dev->name, VLAN_DEV_INFO(dev)->real_dev->name);
- dev_change_flags(VLAN_DEV_INFO(dev)->real_dev, flgs);
- }
- } else {
- printk("VLAN (%s): Underlying device (%s) has same MAC, not checking promiscious mode.\n",
- dev->name, VLAN_DEV_INFO(dev)->real_dev->name);
- }
-
- return 0;
-}
-
static inline int vlan_dmi_equals(struct dev_mc_list *dmi1,
struct dev_mc_list *dmi2)
{
@@ -736,15 +698,32 @@ static void vlan_flush_mc_list(struct net_device *dev)
int vlan_dev_open(struct net_device *dev)
{
- if (!(VLAN_DEV_INFO(dev)->real_dev->flags & IFF_UP))
+ struct vlan_dev_info *vlan = VLAN_DEV_INFO(dev);
+ struct net_device *real_dev = vlan->real_dev;
+ int err;
+
+ if (!(real_dev->flags & IFF_UP))
return -ENETDOWN;
+ if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) {
+ err = dev_unicast_add(real_dev, dev->dev_addr, ETH_ALEN);
+ if (err < 0)
+ return err;
+ }
+ memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN);
+
return 0;
}
int vlan_dev_stop(struct net_device *dev)
{
+ struct net_device *real_dev = VLAN_DEV_INFO(dev)->real_dev;
+
vlan_flush_mc_list(dev);
+
+ if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
+ dev_unicast_delete(real_dev, dev->dev_addr, dev->addr_len);
+
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.