/*      $NetBSD: if_stats.h,v 1.6 2024/07/01 13:13:37 riastradh Exp $   */

/*-
 * Copyright (c) 2020 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _NET_IF_STATS_H_
#define _NET_IF_STATS_H_

#include <net/net_stats.h>

/*
 * Interface statistics.  All values are unsigned 64-bit.
 */
typedef enum {
        if_ipackets             = 0,    /* packets received on interface */
        if_ierrors              = 1,    /* input errors on interface */
        if_opackets             = 2,    /* packets sent on interface */
        if_oerrors              = 3,    /* output errors on interface */
        if_collisions           = 4,    /* collisions on csma interfaces */
        if_ibytes               = 5,    /* total number of octets received */
        if_obytes               = 6,    /* total number of octets sent */
        if_imcasts              = 7,    /* packets received via multicast */
        if_omcasts              = 8,    /* packets sent via multicast */
        if_iqdrops              = 9,    /* dropped on input, this interface */
        if_noproto              = 10,   /* destined for unsupported protocol */

        IF_NSTATS               = 11
} if_stat_t;

#ifdef _KERNEL

#include <sys/sdt.h>

SDT_PROBE_DECLARE(sdt, net, interface, stat);

#define IF_STAT_GETREF(ifp)     _NET_STAT_GETREF((ifp)->if_stats)
#define IF_STAT_PUTREF(ifp)     _NET_STAT_PUTREF((ifp)->if_stats)

static inline void
if_statinc(ifnet_t *ifp, if_stat_t x)
{
        SDT_PROBE3(sdt, net, interface, stat,  ifp, x, +1);
        _NET_STATINC((ifp)->if_stats, x);
}

static inline void
if_statinc_ref(ifnet_t *ifp, net_stat_ref_t nsr, if_stat_t x)
{
        SDT_PROBE3(sdt, net, interface, stat,  ifp, x, +1);
        _NET_STATINC_REF(nsr, x);
}

static inline void
if_statdec(ifnet_t *ifp, if_stat_t x)
{
        SDT_PROBE3(sdt, net, interface, stat,  ifp, x, -1);
        _NET_STATDEC((ifp)->if_stats, x);
}

static inline void
if_statdec_ref(ifnet_t *ifp, net_stat_ref_t nsr, if_stat_t x)
{
        SDT_PROBE3(sdt, net, interface, stat,  ifp, x, -1);
        _NET_STATDEC_REF(nsr, x);
}

static inline void
if_statadd(ifnet_t *ifp, if_stat_t x, uint64_t v)
{
        SDT_PROBE3(sdt, net, interface, stat,  ifp, x, v);
        _NET_STATADD((ifp)->if_stats, x, v);
}

static inline void
if_statadd_ref(ifnet_t *ifp, net_stat_ref_t nsr, if_stat_t x, uint64_t v)
{
        SDT_PROBE3(sdt, net, interface, stat,  ifp, x, v);
        _NET_STATADD_REF(nsr, x, v);
}

static inline void
if_statadd2(ifnet_t *ifp, if_stat_t x1, uint64_t v1, if_stat_t x2, uint64_t v2)
{
        net_stat_ref_t _nsr_ = IF_STAT_GETREF(ifp);
        SDT_PROBE3(sdt, net, interface, stat,  ifp, x1, v1);
        SDT_PROBE3(sdt, net, interface, stat,  ifp, x2, v2);
        _NET_STATADD_REF(_nsr_, x1, v1);
        _NET_STATADD_REF(_nsr_, x2, v2);
        IF_STAT_PUTREF(ifp);
}

static inline void
if_statsub(ifnet_t *ifp, if_stat_t x, uint64_t v)
{
        SDT_PROBE3(sdt, net, interface, stat,  ifp, x, -v);
        _NET_STATSUB((ifp)->if_stats, x, v);
}

static inline void
if_statsub_ref(ifnet_t *ifp, net_stat_ref_t nsr, if_stat_t x, uint64_t v)
{
        SDT_PROBE3(sdt, net, interface, stat,  ifp, x, -v);
        _NET_STATSUB_REF(nsr, x, v);
}

void    if_stats_init(ifnet_t *);
void    if_stats_fini(ifnet_t *);
void    if_stats_to_if_data(ifnet_t *, struct if_data *, bool);

#endif /* _KERNEL */

#endif /* !_NET_IF_STATS_H_ */