2 * Universal TUN/TAP device driver.
3 * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
18 #include <uapi/linux/if_tun.h>
20 #define TUN_XDP_FLAG 0x1UL
22 #if defined(CONFIG_TUN) || defined(CONFIG_TUN_MODULE)
23 struct socket *tun_get_socket(struct file *);
24 struct ptr_ring *tun_get_tx_ring(struct file *file);
25 bool tun_is_xdp_frame(void *ptr);
26 void *tun_xdp_to_ptr(void *ptr);
27 void *tun_ptr_to_xdp(void *ptr);
28 void tun_ptr_free(void *ptr);
30 #include <linux/err.h>
31 #include <linux/errno.h>
34 static inline struct socket *tun_get_socket(struct file *f)
36 return ERR_PTR(-EINVAL);
38 static inline struct ptr_ring *tun_get_tx_ring(struct file *f)
40 return ERR_PTR(-EINVAL);
42 static inline bool tun_is_xdp_frame(void *ptr)
46 static inline void *tun_xdp_to_ptr(void *ptr)
50 static inline void *tun_ptr_to_xdp(void *ptr)
54 static inline void tun_ptr_free(void *ptr)
57 #endif /* CONFIG_TUN */
58 #endif /* __IF_TUN_H */