tap: export skb_array

This patch exports skb_array through tap_get_skb_array(). Caller can
then manipulate skb array directly.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/net/tap.c b/drivers/net/tap.c
index 4d4173d25dd0..abdaf867774d 100644
--- a/drivers/net/tap.c
+++ b/drivers/net/tap.c
@@ -1193,6 +1193,19 @@ struct socket *tap_get_socket(struct file *file)
 }
 EXPORT_SYMBOL_GPL(tap_get_socket);
 
+struct skb_array *tap_get_skb_array(struct file *file)
+{
+        struct tap_queue *q;
+
+        if (file->f_op != &tap_fops)
+                return ERR_PTR(-EINVAL);
+        q = file->private_data;
+        if (!q)
+                return ERR_PTR(-EBADFD);
+        return &q->skb_array;
+}
+EXPORT_SYMBOL_GPL(tap_get_skb_array);
+
 int tap_queue_resize(struct tap_dev *tap)
 {
         struct net_device *dev = tap->dev;