macvlan: Add netlink attribute for broadcast cutoff

[platform/kernel/linux-starfive.git] / drivers / net / macvlan.c

diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 62b4748..4215106 100644 (file)
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -47,6 +47,7 @@ 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];
@@ -814,6 +815,12 @@ static void macvlan_compute_filter(unsigned long *mc_filter,
        }
 }
 
+static void macvlan_recompute_bc_filter(struct macvlan_dev *vlan)
+{
+       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);
@@ -838,8 +845,16 @@ static void macvlan_set_mac_lists(struct net_device *dev)
         */
        macvlan_compute_filter(vlan->port->mc_filter, vlan->lowerdev, NULL,
                               0);
-       macvlan_compute_filter(vlan->port->bc_filter, vlan->lowerdev, NULL,
-                              1);
+       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)
@@ -1254,6 +1269,7 @@ 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);
 
@@ -1527,6 +1543,10 @@ 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;
@@ -1623,6 +1643,10 @@ 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]) {
@@ -1703,6 +1727,9 @@ 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: