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path: root/drivers/net/macvtap.c
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Diffstat (limited to 'drivers/net/macvtap.c')
-rw-r--r--drivers/net/macvtap.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index a8a94e2f6dd..3b1c54a9c6e 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -58,7 +58,7 @@ static struct proto macvtap_proto = {
* only has one tap, the interface numbers assure that the
* device nodes are unique.
*/
-static unsigned int macvtap_major;
+static dev_t macvtap_major;
#define MACVTAP_NUM_DEVS 65536
static struct class *macvtap_class;
static struct cdev macvtap_cdev;
@@ -180,11 +180,18 @@ static int macvtap_forward(struct net_device *dev, struct sk_buff *skb)
{
struct macvtap_queue *q = macvtap_get_queue(dev, skb);
if (!q)
- return -ENOLINK;
+ goto drop;
+
+ if (skb_queue_len(&q->sk.sk_receive_queue) >= dev->tx_queue_len)
+ goto drop;
skb_queue_tail(&q->sk.sk_receive_queue, skb);
wake_up_interruptible_poll(sk_sleep(&q->sk), POLLIN | POLLRDNORM | POLLRDBAND);
- return 0;
+ return NET_RX_SUCCESS;
+
+drop:
+ kfree_skb(skb);
+ return NET_RX_DROP;
}
/*
@@ -235,8 +242,15 @@ static void macvtap_dellink(struct net_device *dev,
macvlan_dellink(dev, head);
}
+static void macvtap_setup(struct net_device *dev)
+{
+ macvlan_common_setup(dev);
+ dev->tx_queue_len = TUN_READQ_SIZE;
+}
+
static struct rtnl_link_ops macvtap_link_ops __read_mostly = {
.kind = "macvtap",
+ .setup = macvtap_setup,
.newlink = macvtap_newlink,
.dellink = macvtap_dellink,
};