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path: root/drivers/net/macvlan.c
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Diffstat (limited to 'drivers/net/macvlan.c')
-rw-r--r--drivers/net/macvlan.c98
1 files changed, 72 insertions, 26 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 99a971929c8e..4a53debf9d7c 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -47,9 +47,11 @@ struct macvlan_port {
struct sk_buff_head bc_queue;
struct work_struct bc_work;
u32 bc_queue_len_used;
+ int bc_cutoff;
u32 flags;
int count;
struct hlist_head vlan_source_hash[MACVLAN_HASH_SIZE];
+ DECLARE_BITMAP(bc_filter, MACVLAN_MC_FILTER_SZ);
DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
unsigned char perm_addr[ETH_ALEN];
};
@@ -291,6 +293,31 @@ static void macvlan_broadcast(struct sk_buff *skb,
}
}
+static void macvlan_multicast_rx(const struct macvlan_port *port,
+ const struct macvlan_dev *src,
+ struct sk_buff *skb)
+{
+ if (!src)
+ /* frame comes from an external address */
+ 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 */
+ macvlan_broadcast(skb, port, src->dev,
+ MACVLAN_MODE_VEPA |
+ MACVLAN_MODE_BRIDGE);
+ else
+ /*
+ * flood only to VEPA ports, bridge ports
+ * already saw the frame on the way out.
+ */
+ macvlan_broadcast(skb, port, src->dev,
+ MACVLAN_MODE_VEPA);
+}
+
static void macvlan_process_broadcast(struct work_struct *w)
{
struct macvlan_port *port = container_of(w, struct macvlan_port,
@@ -308,27 +335,7 @@ static void macvlan_process_broadcast(struct work_struct *w)
const struct macvlan_dev *src = MACVLAN_SKB_CB(skb)->src;
rcu_read_lock();
-
- if (!src)
- /* frame comes from an external address */
- 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 */
- macvlan_broadcast(skb, port, src->dev,
- MACVLAN_MODE_VEPA |
- MACVLAN_MODE_BRIDGE);
- else
- /*
- * flood only to VEPA ports, bridge ports
- * already saw the frame on the way out.
- */
- macvlan_broadcast(skb, port, src->dev,
- MACVLAN_MODE_VEPA);
-
+ macvlan_multicast_rx(port, src, skb);
rcu_read_unlock();
if (src)
@@ -476,8 +483,10 @@ static rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb)
}
hash = mc_hash(NULL, eth->h_dest);
- if (test_bit(hash, port->mc_filter))
+ if (test_bit(hash, port->bc_filter))
macvlan_broadcast_enqueue(port, src, skb);
+ else if (test_bit(hash, port->mc_filter))
+ macvlan_multicast_rx(port, src, skb);
return RX_HANDLER_PASS;
}
@@ -780,16 +789,19 @@ static void macvlan_change_rx_flags(struct net_device *dev, int change)
static void macvlan_compute_filter(unsigned long *mc_filter,
struct net_device *dev,
- struct macvlan_dev *vlan)
+ struct macvlan_dev *vlan, int cutoff)
{
if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
bitmap_fill(mc_filter, MACVLAN_MC_FILTER_SZ);
} else {
- struct netdev_hw_addr *ha;
DECLARE_BITMAP(filter, MACVLAN_MC_FILTER_SZ);
+ struct netdev_hw_addr *ha;
bitmap_zero(filter, MACVLAN_MC_FILTER_SZ);
netdev_for_each_mc_addr(ha, dev) {
+ if (!vlan && ha->synced <= cutoff)
+ continue;
+
__set_bit(mc_hash(vlan, ha->addr), filter);
}
@@ -799,11 +811,22 @@ static void macvlan_compute_filter(unsigned long *mc_filter,
}
}
+static void macvlan_recompute_bc_filter(struct macvlan_dev *vlan)
+{
+ if (vlan->port->bc_cutoff < 0) {
+ bitmap_zero(vlan->port->bc_filter, MACVLAN_MC_FILTER_SZ);
+ return;
+ }
+
+ macvlan_compute_filter(vlan->port->bc_filter, vlan->lowerdev, NULL,
+ vlan->port->bc_cutoff);
+}
+
static void macvlan_set_mac_lists(struct net_device *dev)
{
struct macvlan_dev *vlan = netdev_priv(dev);
- macvlan_compute_filter(vlan->mc_filter, dev, vlan);
+ macvlan_compute_filter(vlan->mc_filter, dev, vlan, 0);
dev_uc_sync(vlan->lowerdev, dev);
dev_mc_sync(vlan->lowerdev, dev);
@@ -821,7 +844,18 @@ static void macvlan_set_mac_lists(struct net_device *dev)
* The solution is to maintain a list of broadcast addresses like
* we do for uc/mc, if you care.
*/
- macvlan_compute_filter(vlan->port->mc_filter, vlan->lowerdev, NULL);
+ macvlan_compute_filter(vlan->port->mc_filter, vlan->lowerdev, NULL,
+ 0);
+ macvlan_recompute_bc_filter(vlan);
+}
+
+static void update_port_bc_cutoff(struct macvlan_dev *vlan, int cutoff)
+{
+ if (vlan->port->bc_cutoff == cutoff)
+ return;
+
+ vlan->port->bc_cutoff = cutoff;
+ macvlan_recompute_bc_filter(vlan);
}
static int macvlan_change_mtu(struct net_device *dev, int new_mtu)
@@ -1236,6 +1270,7 @@ static int macvlan_port_create(struct net_device *dev)
INIT_HLIST_HEAD(&port->vlan_source_hash[i]);
port->bc_queue_len_used = 0;
+ port->bc_cutoff = 1;
skb_queue_head_init(&port->bc_queue);
INIT_WORK(&port->bc_work, macvlan_process_broadcast);
@@ -1509,6 +1544,10 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
if (data && data[IFLA_MACVLAN_BC_QUEUE_LEN])
vlan->bc_queue_len_req = nla_get_u32(data[IFLA_MACVLAN_BC_QUEUE_LEN]);
+ if (data && data[IFLA_MACVLAN_BC_CUTOFF])
+ update_port_bc_cutoff(
+ vlan, nla_get_s32(data[IFLA_MACVLAN_BC_CUTOFF]));
+
err = register_netdevice(dev);
if (err < 0)
goto destroy_macvlan_port;
@@ -1605,6 +1644,10 @@ static int macvlan_changelink(struct net_device *dev,
update_port_bc_queue_len(vlan->port);
}
+ if (data && data[IFLA_MACVLAN_BC_CUTOFF])
+ update_port_bc_cutoff(
+ vlan, nla_get_s32(data[IFLA_MACVLAN_BC_CUTOFF]));
+
if (set_mode)
vlan->mode = mode;
if (data && data[IFLA_MACVLAN_MACADDR_MODE]) {
@@ -1685,6 +1728,9 @@ static int macvlan_fill_info(struct sk_buff *skb,
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_MACVLAN_BC_QUEUE_LEN_USED, port->bc_queue_len_used))
goto nla_put_failure;
+ if (port->bc_cutoff != 1 &&
+ nla_put_s32(skb, IFLA_MACVLAN_BC_CUTOFF, port->bc_cutoff))
+ goto nla_put_failure;
return 0;
nla_put_failure:
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