diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/macvlan.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 93f0ba25c808..6ed577b065df 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -38,6 +38,7 @@ struct macvlan_port { struct hlist_head vlan_hash[MACVLAN_HASH_SIZE]; struct list_head vlans; struct rcu_head rcu; + bool passthru; }; #define macvlan_port_get_rcu(dev) \ @@ -169,6 +170,7 @@ static struct sk_buff *macvlan_handle_frame(struct sk_buff *skb) macvlan_broadcast(skb, port, NULL, MACVLAN_MODE_PRIVATE | MACVLAN_MODE_VEPA | + MACVLAN_MODE_PASSTHRU| MACVLAN_MODE_BRIDGE); else if (src->mode == MACVLAN_MODE_VEPA) /* flood to everyone except source */ @@ -185,7 +187,10 @@ static struct sk_buff *macvlan_handle_frame(struct sk_buff *skb) return skb; } - vlan = macvlan_hash_lookup(port, eth->h_dest); + if (port->passthru) + vlan = list_first_entry(&port->vlans, struct macvlan_dev, list); + else + vlan = macvlan_hash_lookup(port, eth->h_dest); if (vlan == NULL) return skb; @@ -288,6 +293,11 @@ static int macvlan_open(struct net_device *dev) struct net_device *lowerdev = vlan->lowerdev; int err; + if (vlan->port->passthru) { + dev_set_promiscuity(lowerdev, 1); + goto hash_add; + } + err = -EBUSY; if (macvlan_addr_busy(vlan->port, dev->dev_addr)) goto out; @@ -300,6 +310,8 @@ static int macvlan_open(struct net_device *dev) if (err < 0) goto del_unicast; } + +hash_add: macvlan_hash_add(vlan); return 0; @@ -314,12 +326,18 @@ static int macvlan_stop(struct net_device *dev) struct macvlan_dev *vlan = netdev_priv(dev); struct net_device *lowerdev = vlan->lowerdev; + if (vlan->port->passthru) { + dev_set_promiscuity(lowerdev, -1); + goto hash_del; + } + dev_mc_unsync(lowerdev, dev); if (dev->flags & IFF_ALLMULTI) dev_set_allmulti(lowerdev, -1); dev_uc_del(lowerdev, dev->dev_addr); +hash_del: macvlan_hash_del(vlan); return 0; } @@ -559,6 +577,7 @@ static int macvlan_port_create(struct net_device *dev) if (port == NULL) return -ENOMEM; + port->passthru = false; port->dev = dev; INIT_LIST_HEAD(&port->vlans); for (i = 0; i < MACVLAN_HASH_SIZE; i++) @@ -603,6 +622,7 @@ static int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) case MACVLAN_MODE_PRIVATE: case MACVLAN_MODE_VEPA: case MACVLAN_MODE_BRIDGE: + case MACVLAN_MODE_PASSTHRU: break; default: return -EINVAL; @@ -652,6 +672,10 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev, } port = macvlan_port_get(lowerdev); + /* Only 1 macvlan device can be created in passthru mode */ + if (port->passthru) + return -EINVAL; + vlan->lowerdev = lowerdev; vlan->dev = dev; vlan->port = port; @@ -662,6 +686,13 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev, if (data && data[IFLA_MACVLAN_MODE]) vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); + if (vlan->mode == MACVLAN_MODE_PASSTHRU) { + if (!list_empty(&port->vlans)) + return -EINVAL; + port->passthru = true; + memcpy(dev->dev_addr, lowerdev->dev_addr, ETH_ALEN); + } + err = register_netdevice(dev); if (err < 0) goto destroy_port; |