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Commit 8df30255 authored by Vivien Didelot's avatar Vivien Didelot Committed by David S. Miller
Browse files

net: dsa: add MDB support 



Add SWITCHDEV_OBJ_ID_PORT_MDB support to the DSA layer.

Signed-off-by: default avatarVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent dbeb714a

Documentation/networking/dsa/dsa.txt

+23 −0
Original line number Diff line number Diff line
@@ -584,6 +584,29 @@ of DSA, would be the its port-based VLAN, used by the associated bridge device. 
  function that the driver has to call for each MAC address known to be behind

  the given port. A switchdev object is used to carry the VID and FDB info.



- port_mdb_prepare: bridge layer function invoked when the bridge prepares the

  installation of a multicast database entry. If the operation is not supported,

  this function should return -EOPNOTSUPP to inform the bridge code to fallback

  to a software implementation. No hardware setup must be done in this function.

  See port_fdb_add for this and details.



- port_mdb_add: bridge layer function invoked when the bridge wants to install

  a multicast database entry, the switch hardware should be programmed with the

  specified address in the specified VLAN ID in the forwarding database

  associated with this VLAN ID.



Note: VLAN ID 0 corresponds to the port private database, which, in the context

of DSA, would be the its port-based VLAN, used by the associated bridge device.



- port_mdb_del: bridge layer function invoked when the bridge wants to remove a

  multicast database entry, the switch hardware should be programmed to delete

  the specified MAC address from the specified VLAN ID if it was mapped into

  this port forwarding database.



- port_mdb_dump: bridge layer function invoked with a switchdev callback

  function that the driver has to call for each MAC address known to be behind

  the given port. A switchdev object is used to carry the VID and MDB info.



TODO

====

include/net/dsa.h

+16 −0
Original line number Diff line number Diff line
@@ -234,6 +234,7 @@ static inline u8 dsa_upstream_port(struct dsa_switch *ds) 
struct switchdev_trans;

struct switchdev_obj;

struct switchdev_obj_port_fdb;

struct switchdev_obj_port_mdb;

struct switchdev_obj_port_vlan;



struct dsa_switch_ops {
@@ -369,6 +370,21 @@ struct dsa_switch_ops { 
	int	(*port_fdb_dump)(struct dsa_switch *ds, int port,

				 struct switchdev_obj_port_fdb *fdb,

				 int (*cb)(struct switchdev_obj *obj));



	/*

	 * Multicast database

	 */

	int	(*port_mdb_prepare)(struct dsa_switch *ds, int port,

				    const struct switchdev_obj_port_mdb *mdb,

				    struct switchdev_trans *trans);

	void	(*port_mdb_add)(struct dsa_switch *ds, int port,

				const struct switchdev_obj_port_mdb *mdb,

				struct switchdev_trans *trans);

	int	(*port_mdb_del)(struct dsa_switch *ds, int port,

				const struct switchdev_obj_port_mdb *mdb);

	int	(*port_mdb_dump)(struct dsa_switch *ds, int port,

				 struct switchdev_obj_port_mdb *mdb,

				 int (*cb)(struct switchdev_obj *obj));

};



void register_switch_driver(struct dsa_switch_ops *type);

net/dsa/slave.c

+55 −0
Original line number Diff line number Diff line
@@ -290,6 +290,50 @@ static int dsa_slave_port_fdb_dump(struct net_device *dev, 
	return -EOPNOTSUPP;

}



static int dsa_slave_port_mdb_add(struct net_device *dev,

				  const struct switchdev_obj_port_mdb *mdb,

				  struct switchdev_trans *trans)

{

	struct dsa_slave_priv *p = netdev_priv(dev);

	struct dsa_switch *ds = p->parent;



	if (switchdev_trans_ph_prepare(trans)) {

		if (!ds->ops->port_mdb_prepare || !ds->ops->port_mdb_add)

			return -EOPNOTSUPP;



		return ds->ops->port_mdb_prepare(ds, p->port, mdb, trans);

	}



	ds->ops->port_mdb_add(ds, p->port, mdb, trans);



	return 0;

}



static int dsa_slave_port_mdb_del(struct net_device *dev,

				  const struct switchdev_obj_port_mdb *mdb)

{

	struct dsa_slave_priv *p = netdev_priv(dev);

	struct dsa_switch *ds = p->parent;



	if (ds->ops->port_mdb_del)

		return ds->ops->port_mdb_del(ds, p->port, mdb);



	return -EOPNOTSUPP;

}



static int dsa_slave_port_mdb_dump(struct net_device *dev,

				   struct switchdev_obj_port_mdb *mdb,

				   switchdev_obj_dump_cb_t *cb)

{

	struct dsa_slave_priv *p = netdev_priv(dev);

	struct dsa_switch *ds = p->parent;



	if (ds->ops->port_mdb_dump)

		return ds->ops->port_mdb_dump(ds, p->port, mdb, cb);



	return -EOPNOTSUPP;

}



static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)

{

	struct dsa_slave_priv *p = netdev_priv(dev);
@@ -412,6 +456,10 @@ static int dsa_slave_port_obj_add(struct net_device *dev, 
					     SWITCHDEV_OBJ_PORT_FDB(obj),

					     trans);

		break;

	case SWITCHDEV_OBJ_ID_PORT_MDB:

		err = dsa_slave_port_mdb_add(dev, SWITCHDEV_OBJ_PORT_MDB(obj),

					     trans);

		break;

	case SWITCHDEV_OBJ_ID_PORT_VLAN:

		err = dsa_slave_port_vlan_add(dev,

					      SWITCHDEV_OBJ_PORT_VLAN(obj),
@@ -435,6 +483,9 @@ static int dsa_slave_port_obj_del(struct net_device *dev, 
		err = dsa_slave_port_fdb_del(dev,

					     SWITCHDEV_OBJ_PORT_FDB(obj));

		break;

	case SWITCHDEV_OBJ_ID_PORT_MDB:

		err = dsa_slave_port_mdb_del(dev, SWITCHDEV_OBJ_PORT_MDB(obj));

		break;

	case SWITCHDEV_OBJ_ID_PORT_VLAN:

		err = dsa_slave_port_vlan_del(dev,

					      SWITCHDEV_OBJ_PORT_VLAN(obj));
@@ -459,6 +510,10 @@ static int dsa_slave_port_obj_dump(struct net_device *dev, 
					      SWITCHDEV_OBJ_PORT_FDB(obj),

					      cb);

		break;

	case SWITCHDEV_OBJ_ID_PORT_MDB:

		err = dsa_slave_port_mdb_dump(dev, SWITCHDEV_OBJ_PORT_MDB(obj),

					      cb);

		break;

	case SWITCHDEV_OBJ_ID_PORT_VLAN:

		err = dsa_slave_port_vlan_dump(dev,

					       SWITCHDEV_OBJ_PORT_VLAN(obj),