/*      $NetBSD: altq_var.h,v 1.13 2024/12/07 07:45:43 andvar Exp $     */
/*      $KAME: altq_var.h,v 1.18 2005/04/13 03:44:25 suz Exp $  */

/*
* Copyright (C) 1998-2003
*      Sony Computer Science Laboratories Inc.  All rights reserved.
*
* 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 SONY CSL 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 SONY CSL 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 _ALTQ_ALTQ_VAR_H_
#define _ALTQ_ALTQ_VAR_H_

#ifdef _KERNEL

#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/queue.h>

#ifdef ALTQ3_CLFIER_COMPAT
/*
* filter structure for altq common classifier
*/
struct acc_filter {
       LIST_ENTRY(acc_filter)  f_chain;
       void                    *f_class;       /* pointer to the class */
       u_long                  f_handle;       /* filter id */
       u_int32_t               f_fbmask;       /* filter bitmask */
       struct flow_filter      f_filter;       /* filter value */
};

/*
* XXX ACC_FILTER_TABLESIZE can't be larger than 2048 unless we fix
* the handle assignment.
*/
#define ACC_FILTER_TABLESIZE    (256+1)
#define ACC_FILTER_MASK         (ACC_FILTER_TABLESIZE - 2)
#define ACC_WILDCARD_INDEX      (ACC_FILTER_TABLESIZE - 1)
#ifdef __GNUC__
#define ACC_GET_HASH_INDEX(addr) \
       ({int x = (addr) + ((addr) >> 16); (x + (x >> 8)) & ACC_FILTER_MASK;})
#else
#define ACC_GET_HASH_INDEX(addr) \
       (((addr) + ((addr) >> 8) + ((addr) >> 16) + ((addr) >> 24)) \
       & ACC_FILTER_MASK)
#endif
#define ACC_GET_HINDEX(handle) ((handle) >> 20)

#if (__FreeBSD_version > 500000)
#define ACC_LOCK_INIT(ac)       mtx_init(&(ac)->acc_mtx, "classifier", MTX_DEF)
#define ACC_LOCK_DESTROY(ac)    mtx_destroy(&(ac)->acc_mtx)
#define ACC_LOCK(ac)            mtx_lock(&(ac)->acc_mtx)
#define ACC_UNLOCK(ac)          mtx_unlock(&(ac)->acc_mtx)
#else
#define ACC_LOCK_INIT(ac)
#define ACC_LOCK_DESTROY(ac)
#define ACC_LOCK(ac)
#define ACC_UNLOCK(ac)
#endif

struct acc_classifier {
       u_int32_t                       acc_fbmask;
       LIST_HEAD(filt, acc_filter)     acc_filters[ACC_FILTER_TABLESIZE];

#if (__FreeBSD_version > 500000)
       struct  mtx acc_mtx;
#endif
};

/*
* flowinfo mask bits used by classifier
*/
/* for ipv4 */
#define FIMB4_PROTO     0x0001
#define FIMB4_TOS       0x0002
#define FIMB4_DADDR     0x0004
#define FIMB4_SADDR     0x0008
#define FIMB4_DPORT     0x0010
#define FIMB4_SPORT     0x0020
#define FIMB4_GPI       0x0040
#define FIMB4_ALL       0x007f
/* for ipv6 */
#define FIMB6_PROTO     0x0100
#define FIMB6_TCLASS    0x0200
#define FIMB6_DADDR     0x0400
#define FIMB6_SADDR     0x0800
#define FIMB6_DPORT     0x1000
#define FIMB6_SPORT     0x2000
#define FIMB6_GPI       0x4000
#define FIMB6_FLABEL    0x8000
#define FIMB6_ALL       0xff00

#define FIMB_ALL        (FIMB4_ALL|FIMB6_ALL)

#define FIMB4_PORTS     (FIMB4_DPORT|FIMB4_SPORT|FIMB4_GPI)
#define FIMB6_PORTS     (FIMB6_DPORT|FIMB6_SPORT|FIMB6_GPI)
#endif /* ALTQ3_CLFIER_COMPAT */

/*
* machine dependent clock
* a 64bit high resolution time counter.
*/
extern u_int32_t machclk_freq;
extern u_int32_t machclk_per_tick;
extern void init_machclk(void);
extern u_int64_t read_machclk(void);

/*
* debug support
*/
#ifdef ALTQ_DEBUG
#ifdef __STDC__
#define ASSERT(e)       ((e) ? (void)0 : altq_assert(__FILE__, __LINE__, #e))
#else   /* PCC */
#define ASSERT(e)       ((e) ? (void)0 : altq_assert(__FILE__, __LINE__, "e"))
#endif
#else
#define ASSERT(e)       ((void)0)
#endif

/*
* misc stuff for compatibility
*/
/* ioctl cmd type */
typedef u_long ioctlcmd_t;

/*
* queue macros:
* the interface of TAILQ_LAST macro changed after the introduction
* of softupdate. redefine it here to make it work with pre-2.2.7.
*/
#undef TAILQ_LAST
#define TAILQ_LAST(head, headname) \
       (*(((struct headname *)((head)->tqh_last))->tqh_last))

#ifndef TAILQ_EMPTY
#define TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
#endif
#ifndef TAILQ_FOREACH
#define TAILQ_FOREACH(var, head, field)                                 \
       for (var = TAILQ_FIRST(head); var; var = TAILQ_NEXT(var, field))
#endif

/* macro for timeout/untimeout */
#if (__FreeBSD_version > 300000) || defined(__NetBSD__)
/* use callout */
#include <sys/callout.h>

#if (__FreeBSD_version > 500000) || defined(__NetBSD__)
#define CALLOUT_INIT(c)         callout_init((c), 0)
#else
#define CALLOUT_INIT(c)         callout_init((c))
#endif
#define CALLOUT_RESET(c,t,f,a)  callout_reset((c),(t),(f),(a))
#define CALLOUT_STOP(c)         callout_stop((c))
#ifndef CALLOUT_INITIALIZER
#define CALLOUT_INITIALIZER     { { { NULL } }, 0, NULL, NULL, 0 }
#endif
#elif defined(__OpenBSD__)
#include <sys/timeout.h>
/* callout structure as a wrapper of struct timeout */
struct callout {
       struct timeout  c_to;
};
#define CALLOUT_INIT(c)         do { (void)memset((c), 0, sizeof(*(c))); } while (/*CONSTCOND*/ 0)
#define CALLOUT_RESET(c,t,f,a)  do { if (!timeout_initialized(&(c)->c_to))  \
                                        timeout_set(&(c)->c_to, (f), (a)); \
                                    timeout_add(&(c)->c_to, (t)); } while (/*CONSTCOND*/ 0)
#define CALLOUT_STOP(c)         timeout_del(&(c)->c_to)
#define CALLOUT_INITIALIZER     { { { NULL }, NULL, NULL, 0, 0 } }
#else
/* use old-style timeout/untimeout */
/* dummy callout structure */
struct callout {
       void            *c_arg;                 /* function argument */
       void            (*c_func)(void *);      /* function to call */
};
#define CALLOUT_INIT(c)         do { (void)memset((c), 0, sizeof(*(c))); } while (/*CONSTCOND*/ 0)
#define CALLOUT_RESET(c,t,f,a)  do {    (c)->c_arg = (a);       \
                                       (c)->c_func = (f);      \
                                       timeout((f),(a),(t)); } while (/*CONSTCOND*/ 0)
#define CALLOUT_STOP(c)         untimeout((c)->c_func,(c)->c_arg)
#define CALLOUT_INITIALIZER     { NULL, NULL }
#endif
#if !defined(__FreeBSD__)
typedef void (timeout_t)(void *);
#endif

#define m_pktlen(m)             ((m)->m_pkthdr.len)

struct ifnet; struct mbuf;
struct pf_altq;
#ifdef ALTQ3_CLFIER_COMPAT
struct flowinfo;
#endif

void    *altq_lookup(char *, int);
#ifdef ALTQ3_CLFIER_COMPAT
int     altq_extractflow(struct mbuf *, int, struct flowinfo *, u_int32_t);
int     acc_add_filter(struct acc_classifier *, struct flow_filter *,
           void *, u_long *);
int     acc_delete_filter(struct acc_classifier *, u_long);
int     acc_discard_filters(struct acc_classifier *, void *, int);
void    *acc_classify(void *, struct mbuf *, int);
#endif
u_int8_t read_dsfield(struct mbuf *, struct altq_pktattr *);
void    write_dsfield(struct mbuf *, struct altq_pktattr *, u_int8_t);
void    altq_assert(const char *, int, const char *);
int     tbr_set(struct ifaltq *, struct tb_profile *);
int     tbr_get(struct ifaltq *, struct tb_profile *);

int     altq_pfattach(struct pf_altq *);
int     altq_pfdetach(struct pf_altq *);
int     altq_add(struct pf_altq *);
int     altq_remove(struct pf_altq *);
int     altq_add_queue(struct pf_altq *);
int     altq_remove_queue(struct pf_altq *);
int     altq_getqstats(struct pf_altq *, void *, int *);

int     cbq_pfattach(struct pf_altq *);
int     cbq_add_altq(struct pf_altq *);
int     cbq_remove_altq(struct pf_altq *);
int     cbq_add_queue(struct pf_altq *);
int     cbq_remove_queue(struct pf_altq *);
int     cbq_getqstats(struct pf_altq *, void *, int *);

int     priq_pfattach(struct pf_altq *);
int     priq_add_altq(struct pf_altq *);
int     priq_remove_altq(struct pf_altq *);
int     priq_add_queue(struct pf_altq *);
int     priq_remove_queue(struct pf_altq *);
int     priq_getqstats(struct pf_altq *, void *, int *);

int     hfsc_pfattach(struct pf_altq *);
int     hfsc_add_altq(struct pf_altq *);
int     hfsc_remove_altq(struct pf_altq *);
int     hfsc_add_queue(struct pf_altq *);
int     hfsc_remove_queue(struct pf_altq *);
int     hfsc_getqstats(struct pf_altq *, void *, int *);

#endif /* _KERNEL */
#endif /* _ALTQ_ALTQ_VAR_H_ */

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