/*      $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_ */