diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /include/linux/if_tun.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/linux/if_tun.h')
-rw-r--r-- | include/linux/if_tun.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h new file mode 100644 index 000000000..2a7660843 --- /dev/null +++ b/include/linux/if_tun.h @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Universal TUN/TAP device driver. + * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com> + */ +#ifndef __IF_TUN_H +#define __IF_TUN_H + +#include <uapi/linux/if_tun.h> +#include <uapi/linux/virtio_net.h> + +#define TUN_XDP_FLAG 0x1UL + +#define TUN_MSG_UBUF 1 +#define TUN_MSG_PTR 2 +struct tun_msg_ctl { + unsigned short type; + unsigned short num; + void *ptr; +}; + +struct tun_xdp_hdr { + int buflen; + struct virtio_net_hdr gso; +}; + +#if defined(CONFIG_TUN) || defined(CONFIG_TUN_MODULE) +struct socket *tun_get_socket(struct file *); +struct ptr_ring *tun_get_tx_ring(struct file *file); +static inline bool tun_is_xdp_frame(void *ptr) +{ + return (unsigned long)ptr & TUN_XDP_FLAG; +} +static inline void *tun_xdp_to_ptr(struct xdp_frame *xdp) +{ + return (void *)((unsigned long)xdp | TUN_XDP_FLAG); +} +static inline struct xdp_frame *tun_ptr_to_xdp(void *ptr) +{ + return (void *)((unsigned long)ptr & ~TUN_XDP_FLAG); +} +void tun_ptr_free(void *ptr); +#else +#include <linux/err.h> +#include <linux/errno.h> +struct file; +struct socket; +static inline struct socket *tun_get_socket(struct file *f) +{ + return ERR_PTR(-EINVAL); +} +static inline struct ptr_ring *tun_get_tx_ring(struct file *f) +{ + return ERR_PTR(-EINVAL); +} +static inline bool tun_is_xdp_frame(void *ptr) +{ + return false; +} +static inline void *tun_xdp_to_ptr(struct xdp_frame *xdp) +{ + return NULL; +} +static inline struct xdp_frame *tun_ptr_to_xdp(void *ptr) +{ + return NULL; +} +static inline void tun_ptr_free(void *ptr) +{ +} +#endif /* CONFIG_TUN */ +#endif /* __IF_TUN_H */ |