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/* $OpenBSD: ip_divert.h,v 1.26 2024/07/12 19:50:35 bluhm Exp $ */
/*
* Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _IP_DIVERT_H_
#define _IP_DIVERT_H_
struct divstat {
u_long divs_ipackets; /* total input packets */
u_long divs_noport; /* no socket on port */
u_long divs_fullsock; /* not delivered, input socket full */
u_long divs_opackets; /* total output packets */
u_long divs_errors; /* generic errors */
};
/*
* Names for divert sysctl objects
*/
#define DIVERTCTL_RECVSPACE 1 /* receive buffer space */
#define DIVERTCTL_SENDSPACE 2 /* send buffer space */
#define DIVERTCTL_STATS 3 /* divert statistics */
#define DIVERTCTL_MAXID 4
#define DIVERTCTL_NAMES { \
{ 0, 0 }, \
{ "recvspace", CTLTYPE_INT }, \
{ "sendspace", CTLTYPE_INT }, \
{ "stats", CTLTYPE_STRUCT } \
}
#ifdef _KERNEL
#include <sys/percpu.h>
enum divstat_counters {
divs_ipackets,
divs_noport,
divs_fullsock,
divs_opackets,
divs_errors,
divs_ncounters,
};
extern struct cpumem *divcounters;
static inline void
divstat_inc(enum divstat_counters c)
{
counters_inc(divcounters, c);
}
extern struct inpcbtable divbtable;
extern const struct pr_usrreqs divert_usrreqs;
void divert_init(void);
void divert_packet(struct mbuf *, int, u_int16_t);
int divert_sysctl(int *, u_int, void *, size_t *, void *, size_t);
int divert_attach(struct socket *, int, int);
int divert_detach(struct socket *);
int divert_bind(struct socket *, struct mbuf *, struct proc *);
int divert_shutdown(struct socket *);
int divert_send(struct socket *, struct mbuf *, struct mbuf *,
struct mbuf *);
#endif /* _KERNEL */
#endif /* _IP_DIVERT_H_ */
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