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tun: export skb_array 

This patch exports skb_array through tun_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 12:14:41 +08:00 committed by David S. Miller
parent 3528c1a52e
commit 83339c6b15
2 changed files with 18 additions and 0 deletions
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13
drivers/net/tun.c
View File

@ -2626,6 +2626,19 @@ struct socket *tun_get_socket(struct file *file)
}
EXPORT_SYMBOL_GPL(tun_get_socket);
struct skb_array *tun_get_skb_array(struct file *file)
{
struct tun_file *tfile;
if (file->f_op != &tun_fops)
return ERR_PTR(-EINVAL);
tfile = file->private_data;
if (!tfile)
return ERR_PTR(-EBADFD);
return &tfile->tx_array;
}
EXPORT_SYMBOL_GPL(tun_get_skb_array);
module_init(tun_init);
module_exit(tun_cleanup);
MODULE_DESCRIPTION(DRV_DESCRIPTION);

5
include/linux/if_tun.h
View File

@ -19,6 +19,7 @@
#if defined(CONFIG_TUN) || defined(CONFIG_TUN_MODULE)
struct socket *tun_get_socket(struct file *);
struct skb_array *tun_get_skb_array(struct file *file);
#else
#include <linux/err.h>
#include <linux/errno.h>
@ -28,5 +29,9 @@ static inline struct socket *tun_get_socket(struct file *f)
{
return ERR_PTR(-EINVAL);
}
static inline struct skb_array *tun_get_skb_array(struct file *f)
{
return ERR_PTR(-EINVAL);
}
#endif /* CONFIG_TUN */
#endif /* __IF_TUN_H */