diff options
| author | Vlad Yasevich <[email protected]> | 2014-08-15 13:04:59 -0400 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2014-08-21 16:54:25 -0700 |
| commit | 8a50f11c3b176d7a1df8cd5e29cbe965905e51ee (patch) | |
| tree | 0f31a7bde805088a72152407f43ab9b34b8213a4 | |
| parent | dc808110bb62b64a448696ecac3938902c92e1ab (diff) | |
macvlan: Allow setting multicast filter on all macvlan types
Currently, macvlan code restricts multicast and unicast
filter setting only to passthru devices. As a result,
if a guest using macvtap wants to receive multicast
traffic, it has to set IFF_ALLMULTI or IFF_PROMISC.
This patch makes it possible to use the fdb interface
to add multicast addresses to the filter thus allowing
a guest to receive only targeted multicast traffic.
CC: John Fastabend <[email protected]>
CC: Michael S. Tsirkin <[email protected]>
CC: Jason Wang <[email protected]>
Signed-off-by: Vladislav Yasevich <[email protected]>
Acked-by: John Fastabend <[email protected]>
Acked-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
| -rw-r--r-- | drivers/net/macvlan.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 60e4ca01ccbb..a96955597755 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -739,7 +739,10 @@ static int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], struct macvlan_dev *vlan = netdev_priv(dev); int err = -EINVAL; - if (!vlan->port->passthru) + /* Support unicast filter only on passthru devices. + * Multicast filter should be allowed on all devices. + */ + if (!vlan->port->passthru && is_unicast_ether_addr(addr)) return -EOPNOTSUPP; if (flags & NLM_F_REPLACE) @@ -760,7 +763,10 @@ static int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], struct macvlan_dev *vlan = netdev_priv(dev); int err = -EINVAL; - if (!vlan->port->passthru) + /* Support unicast filter only on passthru devices. + * Multicast filter should be allowed on all devices. + */ + if (!vlan->port->passthru && is_unicast_ether_addr(addr)) return -EOPNOTSUPP; if (is_unicast_ether_addr(addr)) |