c942fddf87
Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Universal TUN/TAP device driver.
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* Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
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*/
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#ifndef __IF_TUN_H
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#define __IF_TUN_H
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#include <uapi/linux/if_tun.h>
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#include <uapi/linux/virtio_net.h>
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#define TUN_XDP_FLAG 0x1UL
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#define TUN_MSG_UBUF 1
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#define TUN_MSG_PTR 2
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struct tun_msg_ctl {
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unsigned short type;
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unsigned short num;
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void *ptr;
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};
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struct tun_xdp_hdr {
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int buflen;
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struct virtio_net_hdr gso;
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};
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#if defined(CONFIG_TUN) || defined(CONFIG_TUN_MODULE)
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struct socket *tun_get_socket(struct file *);
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struct ptr_ring *tun_get_tx_ring(struct file *file);
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bool tun_is_xdp_frame(void *ptr);
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void *tun_xdp_to_ptr(void *ptr);
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void *tun_ptr_to_xdp(void *ptr);
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void tun_ptr_free(void *ptr);
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#else
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#include <linux/err.h>
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#include <linux/errno.h>
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struct file;
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struct socket;
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static inline struct socket *tun_get_socket(struct file *f)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline struct ptr_ring *tun_get_tx_ring(struct file *f)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline bool tun_is_xdp_frame(void *ptr)
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{
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return false;
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}
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static inline void *tun_xdp_to_ptr(void *ptr)
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{
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return NULL;
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}
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static inline void *tun_ptr_to_xdp(void *ptr)
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{
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return NULL;
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}
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static inline void tun_ptr_free(void *ptr)
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{
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}
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#endif /* CONFIG_TUN */
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#endif /* __IF_TUN_H */
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