1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2007 Seccuris Inc.
5 * All rights reserved.
6 *
7 * This software was developed by Robert N. M. Watson under contract to
8 * Seccuris Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $FreeBSD$
32 */
33
34#ifndef _NET_BPF_ZEROCOPY_H_
35#define	_NET_BPF_ZEROCOPY_H_
36
37#ifndef _KERNEL
38#error "no user-serviceable parts inside"
39#endif
40
41void	bpf_zerocopy_append_bytes(struct bpf_d *d, caddr_t buf, u_int offset,
42	    void *src, u_int len);
43void	bpf_zerocopy_append_mbuf(struct bpf_d *d, caddr_t buf, u_int offset,
44	    void *src, u_int len);
45void	bpf_zerocopy_buffull(struct bpf_d *);
46void	bpf_zerocopy_bufheld(struct bpf_d *);
47void	bpf_zerocopy_buf_reclaimed(struct bpf_d *);
48int	bpf_zerocopy_canfreebuf(struct bpf_d *);
49int	bpf_zerocopy_canwritebuf(struct bpf_d *);
50void	bpf_zerocopy_free(struct bpf_d *d);
51int	bpf_zerocopy_ioctl_getzmax(struct thread *td, struct bpf_d *d,
52	    size_t *i);
53int	bpf_zerocopy_ioctl_rotzbuf(struct thread *td, struct bpf_d *d,
54	    struct bpf_zbuf *bz);
55int	bpf_zerocopy_ioctl_setzbuf(struct thread *td, struct bpf_d *d,
56	    struct bpf_zbuf *bz);
57
58#endif /* !_NET_BPF_ZEROCOPY_H_ */
59