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net: dsa: add MDB support 

Add SWITCHDEV_OBJ_ID_PORT_MDB support to the DSA layer.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2016-08-31 11:50:03 -04:00 committed by David S. Miller
parent dbeb714a5b
commit 8df3025520
3 changed files with 94 additions and 0 deletions
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23
Documentation/networking/dsa/dsa.txt
View File

@ -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
====

16
include/net/dsa.h
View File

@ -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);

55
net/dsa/slave.c
View File

@ -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),