200 lines
5.8 KiB
C
200 lines
5.8 KiB
C
/*-
|
|
* Copyright (C) 1997-2003
|
|
* 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.
|
|
*
|
|
* $KAME: altq_red.h,v 1.8 2003/07/10 12:07:49 kjc Exp $
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _ALTQ_ALTQ_RED_H_
|
|
#define _ALTQ_ALTQ_RED_H_
|
|
|
|
#include <net/altq/altq_classq.h>
|
|
|
|
#ifdef ALTQ3_COMPAT
|
|
struct red_interface {
|
|
char red_ifname[IFNAMSIZ];
|
|
};
|
|
|
|
struct red_stats {
|
|
struct red_interface iface;
|
|
int q_len;
|
|
int q_avg;
|
|
|
|
struct pktcntr xmit_cnt;
|
|
struct pktcntr drop_cnt;
|
|
u_int drop_forced;
|
|
u_int drop_unforced;
|
|
u_int marked_packets;
|
|
|
|
/* static red parameters */
|
|
int q_limit;
|
|
int weight;
|
|
int inv_pmax;
|
|
int th_min;
|
|
int th_max;
|
|
|
|
/* flowvalve related stuff */
|
|
u_int fv_flows;
|
|
u_int fv_pass;
|
|
u_int fv_predrop;
|
|
u_int fv_alloc;
|
|
u_int fv_escape;
|
|
};
|
|
|
|
struct red_conf {
|
|
struct red_interface iface;
|
|
int red_weight; /* weight for EWMA */
|
|
int red_inv_pmax; /* inverse of max drop probability */
|
|
int red_thmin; /* red min threshold */
|
|
int red_thmax; /* red max threshold */
|
|
int red_limit; /* max queue length */
|
|
int red_pkttime; /* average packet time in usec */
|
|
int red_flags; /* see below */
|
|
};
|
|
#endif /* ALTQ3_COMPAT */
|
|
|
|
/* red flags */
|
|
#define REDF_ECN4 0x01 /* use packet marking for IPv4 packets */
|
|
#define REDF_ECN6 0x02 /* use packet marking for IPv6 packets */
|
|
#define REDF_ECN (REDF_ECN4 | REDF_ECN6)
|
|
#define REDF_FLOWVALVE 0x04 /* use flowvalve (aka penalty-box) */
|
|
|
|
/*
|
|
* simpler versions of red parameters and statistics used by other
|
|
* disciplines (e.g., CBQ)
|
|
*/
|
|
struct redparams {
|
|
int th_min; /* red min threshold */
|
|
int th_max; /* red max threshold */
|
|
int inv_pmax; /* inverse of max drop probability */
|
|
};
|
|
|
|
struct redstats {
|
|
int q_avg;
|
|
struct pktcntr xmit_cnt;
|
|
struct pktcntr drop_cnt;
|
|
u_int drop_forced;
|
|
u_int drop_unforced;
|
|
u_int marked_packets;
|
|
};
|
|
|
|
#ifdef ALTQ3_COMPAT
|
|
/*
|
|
* IOCTLs for RED
|
|
*/
|
|
#define RED_IF_ATTACH _IOW('Q', 1, struct red_interface)
|
|
#define RED_IF_DETACH _IOW('Q', 2, struct red_interface)
|
|
#define RED_ENABLE _IOW('Q', 3, struct red_interface)
|
|
#define RED_DISABLE _IOW('Q', 4, struct red_interface)
|
|
#define RED_CONFIG _IOWR('Q', 6, struct red_conf)
|
|
#define RED_GETSTATS _IOWR('Q', 12, struct red_stats)
|
|
#define RED_SETDEFAULTS _IOW('Q', 30, struct redparams)
|
|
#endif /* ALTQ3_COMPAT */
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#ifdef ALTQ3_COMPAT
|
|
struct flowvalve;
|
|
#endif
|
|
|
|
/* weight table structure for idle time calibration */
|
|
struct wtab {
|
|
struct wtab *w_next;
|
|
int w_weight;
|
|
int w_param_max;
|
|
int w_refcount;
|
|
int32_t w_tab[32];
|
|
};
|
|
|
|
typedef struct red {
|
|
int red_pkttime; /* average packet time in micro sec
|
|
used for idle calibration */
|
|
int red_flags; /* red flags */
|
|
|
|
/* red parameters */
|
|
int red_weight; /* weight for EWMA */
|
|
int red_inv_pmax; /* inverse of max drop probability */
|
|
int red_thmin; /* red min threshold */
|
|
int red_thmax; /* red max threshold */
|
|
|
|
/* variables for internal use */
|
|
int red_wshift; /* log(red_weight) */
|
|
int red_thmin_s; /* th_min scaled by avgshift */
|
|
int red_thmax_s; /* th_max scaled by avgshift */
|
|
int red_probd; /* drop probability denominator */
|
|
|
|
int red_avg; /* queue len avg scaled by avgshift */
|
|
int red_count; /* packet count since last dropped/
|
|
marked packet */
|
|
int red_idle; /* queue was empty */
|
|
int red_old; /* avg is above th_min */
|
|
struct wtab *red_wtab; /* weight table */
|
|
struct timeval red_last; /* time when the queue becomes idle */
|
|
|
|
#ifdef ALTQ3_COMPAT
|
|
struct flowvalve *red_flowvalve; /* flowvalve state */
|
|
#endif
|
|
|
|
struct {
|
|
struct pktcntr xmit_cnt;
|
|
struct pktcntr drop_cnt;
|
|
u_int drop_forced;
|
|
u_int drop_unforced;
|
|
u_int marked_packets;
|
|
} red_stats;
|
|
} red_t;
|
|
|
|
#ifdef ALTQ3_COMPAT
|
|
typedef struct red_queue {
|
|
struct red_queue *rq_next; /* next red_state in the list */
|
|
struct ifaltq *rq_ifq; /* backpointer to ifaltq */
|
|
|
|
class_queue_t *rq_q;
|
|
|
|
red_t *rq_red;
|
|
} red_queue_t;
|
|
#endif /* ALTQ3_COMPAT */
|
|
|
|
/* red drop types */
|
|
#define DTYPE_NODROP 0 /* no drop */
|
|
#define DTYPE_FORCED 1 /* a "forced" drop */
|
|
#define DTYPE_EARLY 2 /* an "unforced" (early) drop */
|
|
|
|
extern red_t *red_alloc(int, int, int, int, int, int);
|
|
extern void red_destroy(red_t *);
|
|
extern void red_getstats(red_t *, struct redstats *);
|
|
extern int red_addq(red_t *, class_queue_t *, struct mbuf *,
|
|
struct altq_pktattr *);
|
|
extern struct mbuf *red_getq(red_t *, class_queue_t *);
|
|
extern int drop_early(int, int, int);
|
|
extern int mark_ecn(struct mbuf *, struct altq_pktattr *, int);
|
|
extern struct wtab *wtab_alloc(int);
|
|
extern int wtab_destroy(struct wtab *);
|
|
extern int32_t pow_w(struct wtab *, int);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _ALTQ_ALTQ_RED_H_ */
|