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Commit 1fd9b1fc authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller
Browse files

net: vlan: prepare for 802.1ad support 



Make the encapsulation protocol value a property of VLAN devices and change
the device lookup functions to take the protocol value into account.

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 80d5c368

drivers/net/bonding/bond_main.c

+5 −3
Original line number Diff line number Diff line
@@ -782,7 +782,7 @@ static void bond_resend_igmp_join_requests(struct bonding *bond) 


	/* rejoin all groups on vlan devices */

	list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {

		vlan_dev = __vlan_find_dev_deep(bond_dev,

		vlan_dev = __vlan_find_dev_deep(bond_dev, htons(ETH_P_8021Q),

						vlan->vlan_id);

		if (vlan_dev)

			__bond_resend_igmp_join_requests(vlan_dev);
@@ -2512,7 +2512,8 @@ static int bond_has_this_ip(struct bonding *bond, __be32 ip) 


	list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {

		rcu_read_lock();

		vlan_dev = __vlan_find_dev_deep(bond->dev, vlan->vlan_id);

		vlan_dev = __vlan_find_dev_deep(bond->dev, htons(ETH_P_8021Q),

						vlan->vlan_id);

		rcu_read_unlock();

		if (vlan_dev && ip == bond_confirm_addr(vlan_dev, 0, ip))

			return 1;
@@ -2541,7 +2542,7 @@ static void bond_arp_send(struct net_device *slave_dev, int arp_op, __be32 dest_ 
		return;

	}

	if (vlan_id) {

		skb = vlan_put_tag(skb, vlan_id);

		skb = vlan_put_tag(skb, htons(ETH_P_8021Q), vlan_id);

		if (!skb) {

			pr_err("failed to insert VLAN tag\n");

			return;
@@ -2603,6 +2604,7 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave) 
		list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {

			rcu_read_lock();

			vlan_dev = __vlan_find_dev_deep(bond->dev,

							htons(ETH_P_8021Q),

							vlan->vlan_id);

			rcu_read_unlock();

			if (vlan_dev == rt->dst.dev) {

drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c

+1 −1
Original line number Diff line number Diff line
@@ -185,7 +185,7 @@ static struct net_device *get_iff_from_mac(struct adapter *adapter, 
		if (!memcmp(dev->dev_addr, mac, ETH_ALEN)) {

			rcu_read_lock();

			if (vlan && vlan != VLAN_VID_MASK) {

				dev = __vlan_find_dev_deep(dev, vlan);

				dev = __vlan_find_dev_deep(dev, htons(ETH_P_8021Q), vlan);

			} else if (netif_is_bond_slave(dev)) {

				struct net_device *upper_dev;

drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c

+1 −1
Original line number Diff line number Diff line
@@ -3346,7 +3346,7 @@ void qlcnic_restore_indev_addr(struct net_device *netdev, unsigned long event) 


	rcu_read_lock();

	for_each_set_bit(vid, adapter->vlans, VLAN_N_VID) {

		dev = __vlan_find_dev_deep(netdev, vid);

		dev = __vlan_find_dev_deep(netdev, htons(ETH_P_8021Q), vid);

		if (!dev)

			continue;

		qlcnic_config_indev_addr(adapter, dev, event);

include/linux/if_vlan.h

+1 −1
Original line number Diff line number Diff line
@@ -86,7 +86,7 @@ static inline int is_vlan_dev(struct net_device *dev) 
#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)



extern struct net_device *__vlan_find_dev_deep(struct net_device *real_dev,

					       u16 vlan_id);

					       __be16 vlan_proto, u16 vlan_id);

extern struct net_device *vlan_dev_real_dev(const struct net_device *dev);

extern u16 vlan_dev_vlan_id(const struct net_device *dev);

net/8021q/vlan.c

+30 −57
Original line number Diff line number Diff line
@@ -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;

}
@@ -93,7 +97,7 @@ 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);

	/* 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.
@@ -112,13 +116,14 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head) 
	 * VLAN is not 0 (leave it there for 802.1p).

	 */

	if (vlan_id)

		vlan_vid_del(real_dev, htons(ETH_P_8021Q), 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, htons(ETH_P_8021Q), vlan_id);

	err = vlan_vid_add(real_dev, vlan->vlan_proto, vlan_id);

	if (err)

		return err;
@@ -160,7 +165,7 @@ 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;
@@ -181,7 +186,7 @@ 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;
@@ -195,7 +200,7 @@ int register_vlan_dev(struct net_device *dev) 
	if (grp->nr_vlan_devs == 0)

		vlan_gvrp_uninit_applicant(real_dev);

out_vid_del:

	vlan_vid_del(real_dev, htons(ETH_P_8021Q), vlan_id);

	vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);

	return err;

}
@@ -213,7 +218,7 @@ 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;
@@ -255,6 +260,7 @@ 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_proto = htons(ETH_P_8021Q);

	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;
@@ -341,6 +347,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event, 
	int i, flgs;

	struct net_device *vlandev;

	struct vlan_dev_priv *vlan;

	bool last = false;

	LIST_HEAD(list);



	if (is_vlan_dev(dev))
@@ -365,22 +372,13 @@ 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 +388,7 @@ 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;
@@ -404,14 +398,8 @@ 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:
@@ -419,11 +407,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event, 
			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 +421,7 @@ 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 +438,15 @@ 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;
@@ -482,13 +460,8 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event, 
	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;



		vlan_group_for_each_dev(grp, i, vlandev)

			call_netdevice_notifiers(event, vlandev);

		}

		break;

	}