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tap: export skb_array

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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>
This commit is contained in:
Jason Wang 2017-05-17 12:14:42 +08:00 committed by David S. Miller
parent 83339c6b15
commit 49f96fd0cb
2 changed files with 18 additions and 0 deletions
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13
drivers/net/tap.c
View File

@ -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;

5
include/linux/if_tap.h
View File

@ -3,6 +3,7 @@
#if IS_ENABLED(CONFIG_TAP)
struct socket *tap_get_socket(struct file *);
struct skb_array *tap_get_skb_array(struct file *file);
#else
#include <linux/err.h>
#include <linux/errno.h>
@ -12,6 +13,10 @@ static inline struct socket *tap_get_socket(struct file *f)
{
return ERR_PTR(-EINVAL);
}
static inline struct skb_array *tap_get_skb_array(struct file *f)
{
return ERR_PTR(-EINVAL);
}
#endif /* CONFIG_TAP */
#include <net/sock.h>