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authorMike Manning <mmanning@vyatta.att-mail.com>2019-04-18 18:35:32 +0100
committerDavid S. Miller <davem@davemloft.net>2019-04-19 13:58:17 -0700
commit76052d8c4f2dda6f31390521069bc109204e2f28 (patch)
treea451c9eee5c9633629b845974595dd1dd01ff29f
parent8c8b3458d0b91b2230f76fbe1b0280568f10d19f (diff)
vlan: do not transfer link state in vlan bridge binding mode
In vlan bridge binding mode, the link state is no longer transferred from the lower device. Instead it is set by the bridge module according to the state of bridge ports that are members of the vlan. Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com> Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/8021q/vlan.c18
-rw-r--r--net/8021q/vlan_dev.c19
2 files changed, 26 insertions, 11 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index dc4411165e43..1f99678751df 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -75,6 +75,14 @@ static int vlan_group_prealloc_vid(struct vlan_group *vg,
return 0;
}
+static void vlan_stacked_transfer_operstate(const struct net_device *rootdev,
+ struct net_device *dev,
+ struct vlan_dev_priv *vlan)
+{
+ if (!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
+ netif_stacked_transfer_operstate(rootdev, dev);
+}
+
void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
{
struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
@@ -180,7 +188,7 @@ int register_vlan_dev(struct net_device *dev, struct netlink_ext_ack *extack)
/* Account for reference in struct vlan_dev_priv */
dev_hold(real_dev);
- netif_stacked_transfer_operstate(real_dev, dev);
+ vlan_stacked_transfer_operstate(real_dev, dev, vlan);
linkwatch_fire_event(dev); /* _MUST_ call rfc2863_policy() */
/* So, got the sucker initialized, now lets place
@@ -399,7 +407,8 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long 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);
+ vlan_stacked_transfer_operstate(dev, vlandev,
+ vlan_dev_priv(vlandev));
break;
case NETDEV_CHANGEADDR:
@@ -446,7 +455,8 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
dev_close_many(&close_list, false);
list_for_each_entry_safe(vlandev, tmp, &close_list, close_list) {
- netif_stacked_transfer_operstate(dev, vlandev);
+ vlan_stacked_transfer_operstate(dev, vlandev,
+ vlan_dev_priv(vlandev));
list_del_init(&vlandev->close_list);
}
list_del(&close_list);
@@ -463,7 +473,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
dev_change_flags(vlandev, flgs | IFF_UP,
extack);
- netif_stacked_transfer_operstate(dev, vlandev);
+ vlan_stacked_transfer_operstate(dev, vlandev, vlan);
}
break;
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index ed996b500b10..f044ae56a313 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -297,7 +297,8 @@ static int vlan_dev_open(struct net_device *dev)
if (vlan->flags & VLAN_FLAG_MVRP)
vlan_mvrp_request_join(dev);
- if (netif_carrier_ok(real_dev))
+ if (netif_carrier_ok(real_dev) &&
+ !(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
netif_carrier_on(dev);
return 0;
@@ -327,7 +328,8 @@ static int vlan_dev_stop(struct net_device *dev)
if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
dev_uc_del(real_dev, dev->dev_addr);
- netif_carrier_off(dev);
+ if (!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
+ netif_carrier_off(dev);
return 0;
}
@@ -551,7 +553,8 @@ static const struct net_device_ops vlan_netdev_ops;
static int vlan_dev_init(struct net_device *dev)
{
- struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+ struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+ struct net_device *real_dev = vlan->real_dev;
netif_carrier_off(dev);
@@ -562,6 +565,9 @@ static int vlan_dev_init(struct net_device *dev)
(1<<__LINK_STATE_DORMANT))) |
(1<<__LINK_STATE_PRESENT);
+ if (vlan->flags & VLAN_FLAG_BRIDGE_BINDING)
+ dev->state |= (1 << __LINK_STATE_NOCARRIER);
+
dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG |
NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE |
NETIF_F_GSO_ENCAP_ALL |
@@ -592,8 +598,7 @@ static int vlan_dev_init(struct net_device *dev)
#endif
dev->needed_headroom = real_dev->needed_headroom;
- if (vlan_hw_offload_capable(real_dev->features,
- vlan_dev_priv(dev)->vlan_proto)) {
+ if (vlan_hw_offload_capable(real_dev->features, vlan->vlan_proto)) {
dev->header_ops = &vlan_passthru_header_ops;
dev->hard_header_len = real_dev->hard_header_len;
} else {
@@ -607,8 +612,8 @@ static int vlan_dev_init(struct net_device *dev)
vlan_dev_set_lockdep_class(dev, vlan_dev_get_lock_subclass(dev));
- vlan_dev_priv(dev)->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
- if (!vlan_dev_priv(dev)->vlan_pcpu_stats)
+ vlan->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
+ if (!vlan->vlan_pcpu_stats)
return -ENOMEM;
return 0;