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| author | Vivien Didelot <vivien.didelot@gmail.com> | 2019-07-08 23:31:13 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-09 14:49:34 -0700 |
| commit | 08cc83cc7fd8e6c3670ff545ef2bbfbc01a02d87 (patch) | |
| tree | 41c6023764ea942a7633cb1d369b84afea75af4a /net | |
| parent | fbc697796e358d1ed8ed25758b19bdb3a1f8e9f9 (diff) | |
| download | linux-08cc83cc7fd8e6c3670ff545ef2bbfbc01a02d87.tar.bz2 | |
net: dsa: add support for BRIDGE_MROUTER attribute
This patch adds support for enabling or disabling the flooding of
unknown multicast traffic on the CPU ports, depending on the value
of the switchdev SWITCHDEV_ATTR_ID_BRIDGE_MROUTER attribute.
The current behavior is kept unchanged but a user can now prevent
the CPU conduit to be flooded with a lot of unregistered traffic that
the network stack needs to filter in software with e.g.:
echo 0 > /sys/class/net/br0/multicast_router
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/dsa/dsa_priv.h | 2 | ||||
| -rw-r--r-- | net/dsa/port.c | 12 | ||||
| -rw-r--r-- | net/dsa/slave.c | 3 |
3 files changed, 17 insertions, 0 deletions
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h index b2be53a13aa0..12f8c7ee4dd8 100644 --- a/net/dsa/dsa_priv.h +++ b/net/dsa/dsa_priv.h @@ -150,6 +150,8 @@ int dsa_port_pre_bridge_flags(const struct dsa_port *dp, unsigned long flags, struct switchdev_trans *trans); int dsa_port_bridge_flags(const struct dsa_port *dp, unsigned long flags, struct switchdev_trans *trans); +int dsa_port_mrouter(struct dsa_port *dp, bool mrouter, + struct switchdev_trans *trans); int dsa_port_vlan_add(struct dsa_port *dp, const struct switchdev_obj_port_vlan *vlan, struct switchdev_trans *trans); diff --git a/net/dsa/port.c b/net/dsa/port.c index d2b65e8dc60c..f071acf2842b 100644 --- a/net/dsa/port.c +++ b/net/dsa/port.c @@ -261,6 +261,18 @@ int dsa_port_bridge_flags(const struct dsa_port *dp, unsigned long flags, return err; } +int dsa_port_mrouter(struct dsa_port *dp, bool mrouter, + struct switchdev_trans *trans) +{ + struct dsa_switch *ds = dp->ds; + int port = dp->index; + + if (switchdev_trans_ph_prepare(trans)) + return ds->ops->port_egress_floods ? 0 : -EOPNOTSUPP; + + return ds->ops->port_egress_floods(ds, port, true, mrouter); +} + int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr, u16 vid) { diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 9bcb598fc840..614c38ece104 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -301,6 +301,9 @@ static int dsa_slave_port_attr_set(struct net_device *dev, case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: ret = dsa_port_bridge_flags(dp, attr->u.brport_flags, trans); break; + case SWITCHDEV_ATTR_ID_BRIDGE_MROUTER: + ret = dsa_port_mrouter(dp->cpu_dp, attr->u.mrouter, trans); + break; default: ret = -EOPNOTSUPP; break; |