2 * Universal TUN/TAP device driver.
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>
19 #include <uapi/linux/virtio_net.h>
21 #define TUN_XDP_FLAG 0x1UL
23 #define TUN_MSG_UBUF 1
33 struct virtio_net_hdr gso;
36 #if defined(CONFIG_TUN) || defined(CONFIG_TUN_MODULE)
37 struct socket *tun_get_socket(struct file *);
38 struct ptr_ring *tun_get_tx_ring(struct file *file);
39 bool tun_is_xdp_frame(void *ptr);
40 void *tun_xdp_to_ptr(void *ptr);
41 void *tun_ptr_to_xdp(void *ptr);
42 void tun_ptr_free(void *ptr);
44 #include <linux/err.h>
45 #include <linux/errno.h>
48 static inline struct socket *tun_get_socket(struct file *f)
50 return ERR_PTR(-EINVAL);
52 static inline struct ptr_ring *tun_get_tx_ring(struct file *f)
54 return ERR_PTR(-EINVAL);
56 static inline bool tun_is_xdp_frame(void *ptr)
60 static inline void *tun_xdp_to_ptr(void *ptr)
64 static inline void *tun_ptr_to_xdp(void *ptr)
68 static inline void tun_ptr_free(void *ptr)
71 #endif /* CONFIG_TUN */
72 #endif /* __IF_TUN_H */