コード例 #1
0
static int vlan_device_event(struct notifier_block *unused, unsigned long event,
			     void *ptr)
{
	struct net_device *dev = ptr;
	struct vlan_group *grp;
	struct vlan_info *vlan_info;
	int i, flgs;
	struct net_device *vlandev;
	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)) {
		pr_info("adding VLAN 0 to HW filter on device %s\n",
			dev->name);
		vlan_vid_add(dev, 0);
	}

	vlan_info = rtnl_dereference(dev->vlan_info);
	if (!vlan_info)
		goto out;
	grp = &vlan_info->grp;


	switch (event) {
	case NETDEV_CHANGE:
		
		for (i = 0; i < VLAN_N_VID; i++) {
			vlandev = vlan_group_get_device(grp, i);
			if (!vlandev)
				continue;

			netif_stacked_transfer_operstate(dev, vlandev);
		}
		break;

	case NETDEV_CHANGEADDR:
		
		for (i = 0; i < VLAN_N_VID; i++) {
			vlandev = vlan_group_get_device(grp, i);
			if (!vlandev)
				continue;

			flgs = vlandev->flags;
			if (!(flgs & IFF_UP))
				continue;

			vlan_sync_address(dev, vlandev);
		}
		break;

	case NETDEV_CHANGEMTU:
		for (i = 0; i < VLAN_N_VID; i++) {
			vlandev = vlan_group_get_device(grp, i);
			if (!vlandev)
				continue;

			if (vlandev->mtu <= dev->mtu)
				continue;

			dev_set_mtu(vlandev, dev->mtu);
		}
		break;

	case NETDEV_FEAT_CHANGE:
		
		for (i = 0; i < VLAN_N_VID; i++) {
			vlandev = vlan_group_get_device(grp, i);
			if (!vlandev)
				continue;

			vlan_transfer_features(dev, vlandev);
		}

		break;

	case NETDEV_DOWN:
		
		for (i = 0; i < VLAN_N_VID; i++) {
			vlandev = vlan_group_get_device(grp, i);
			if (!vlandev)
				continue;

			flgs = vlandev->flags;
			if (!(flgs & IFF_UP))
				continue;

			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);
		}
		break;

	case NETDEV_UP:
		
		for (i = 0; i < VLAN_N_VID; i++) {
			vlandev = vlan_group_get_device(grp, i);
			if (!vlandev)
				continue;

			flgs = vlandev->flags;
			if (flgs & IFF_UP)
				continue;

			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);
		}
		break;

	case NETDEV_UNREGISTER:
		
		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;

			if (vlan_info->nr_vids == 1)
				i = VLAN_N_VID;

			unregister_vlan_dev(vlandev, &list);
		}
		unregister_netdevice_many(&list);
		break;

	case NETDEV_PRE_TYPE_CHANGE:
		
		return NOTIFY_BAD;

	case NETDEV_NOTIFY_PEERS:
	case NETDEV_BONDING_FAILOVER:
		
		for (i = 0; i < VLAN_N_VID; i++) {
			vlandev = vlan_group_get_device(grp, i);
			if (!vlandev)
				continue;

			call_netdevice_notifiers(event, vlandev);
		}
		break;
	}

out:
	return NOTIFY_DONE;
}
コード例 #2
0
ファイル: vlan.c プロジェクト: PterX/rt-n56u
static int vlan_device_event(struct notifier_block *unused, unsigned long event,
			     void *ptr)
{
	struct net_device *dev = ptr;
	struct vlan_group *grp;
	struct vlan_info *vlan_info;
	int i, flgs;
	struct net_device *vlandev;
	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)) {
		pr_info("adding VLAN 0 to HW filter on device %s\n",
			dev->name);
		vlan_vid_add(dev, 0);
	}

	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.
	 */

	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;

			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;

			flgs = vlandev->flags;
			if (!(flgs & IFF_UP))
				continue;

			vlan_sync_address(dev, vlandev);
		}
		break;

	case NETDEV_CHANGEMTU:
		for (i = 0; i < VLAN_N_VID; i++) {
			vlandev = vlan_group_get_device(grp, i);
			if (!vlandev)
				continue;

			if (vlandev->mtu <= dev->mtu)
				continue;

			dev_set_mtu(vlandev, dev->mtu);
		}
		break;

	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_transfer_features(dev, vlandev);
		}

		break;

	case NETDEV_DOWN:
		if (dev->features & NETIF_F_HW_VLAN_FILTER)
			vlan_vid_del(dev, 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;

			flgs = vlandev->flags;
			if (!(flgs & IFF_UP))
				continue;

			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);
		}
		break;

	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;

			flgs = vlandev->flags;
			if (flgs & IFF_UP)
				continue;

			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);
		}
		break;

	case NETDEV_UNREGISTER:
		/* twiddle thumbs on netns device moves */
		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;

			/* removal of last vid destroys vlan_info, abort
			 * afterwards */
			if (vlan_info->nr_vids == 1)
				i = VLAN_N_VID;

			unregister_vlan_dev(vlandev, &list);
		}
		unregister_netdevice_many(&list);
		break;

	case NETDEV_PRE_TYPE_CHANGE:
		/* Forbid underlaying device to change its type. */
		return NOTIFY_BAD;

	case NETDEV_NOTIFY_PEERS:
	case NETDEV_BONDING_FAILOVER:
		/* Propagate to vlan devices */
		for (i = 0; i < VLAN_N_VID; i++) {
			vlandev = vlan_group_get_device(grp, i);
			if (!vlandev)
				continue;

			call_netdevice_notifiers(event, vlandev);
		}
		break;
	}

out:
	return NOTIFY_DONE;
}
コード例 #3
0
ファイル: vlan.c プロジェクト: BozkurTR/kernel
static int vlan_device_event(struct notifier_block *unused, unsigned long event,
			     void *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_CTAG_FILTER)) {
		pr_info("adding VLAN 0 to HW filter on device %s\n",
			dev->name);
		vlan_vid_add(dev, htons(ETH_P_8021Q), 0);
	}

	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.
	 */

	switch (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);
		break;

	case NETDEV_CHANGEADDR:
		/* Adjust unicast filters on underlying device */
		vlan_group_for_each_dev(grp, i, vlandev) {
			flgs = vlandev->flags;
			if (!(flgs & IFF_UP))
				continue;

			vlan_sync_address(dev, vlandev);
		}
		break;

	case NETDEV_CHANGEMTU:
		vlan_group_for_each_dev(grp, i, vlandev) {
			if (vlandev->mtu <= dev->mtu)
				continue;

			dev_set_mtu(vlandev, dev->mtu);
		}
		break;

	case NETDEV_FEAT_CHANGE:
		/* Propagate device features to underlying device */
		vlan_group_for_each_dev(grp, i, vlandev)
			vlan_transfer_features(dev, vlandev);
		break;

	case NETDEV_DOWN:
		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.  */
		vlan_group_for_each_dev(grp, i, vlandev) {
			flgs = vlandev->flags;
			if (!(flgs & IFF_UP))
				continue;

			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);
		}