1126385Smlaier/* $FreeBSD$ */ 2126385Smlaier/* $KAME: altq_rio.h,v 1.9 2003/07/10 12:07:49 kjc Exp $ */ 3126385Smlaier 4126385Smlaier/* 5126385Smlaier * Copyright (C) 1998-2003 6126385Smlaier * Sony Computer Science Laboratories Inc. All rights reserved. 7126385Smlaier * 8126385Smlaier * Redistribution and use in source and binary forms, with or without 9126385Smlaier * modification, are permitted provided that the following conditions 10126385Smlaier * are met: 11126385Smlaier * 1. Redistributions of source code must retain the above copyright 12126385Smlaier * notice, this list of conditions and the following disclaimer. 13126385Smlaier * 2. Redistributions in binary form must reproduce the above copyright 14126385Smlaier * notice, this list of conditions and the following disclaimer in the 15126385Smlaier * documentation and/or other materials provided with the distribution. 16126385Smlaier * 17126385Smlaier * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND 18126385Smlaier * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19126385Smlaier * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20126385Smlaier * ARE DISCLAIMED. IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE 21126385Smlaier * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22126385Smlaier * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23126385Smlaier * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24126385Smlaier * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25126385Smlaier * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26126385Smlaier * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27126385Smlaier * SUCH DAMAGE. 28126385Smlaier */ 29126385Smlaier 30126385Smlaier#ifndef _ALTQ_ALTQ_RIO_H_ 31126385Smlaier#define _ALTQ_ALTQ_RIO_H_ 32126385Smlaier 33126385Smlaier#include <altq/altq_classq.h> 34126385Smlaier 35126385Smlaier/* 36126385Smlaier * RIO: RED with IN/OUT bit 37126385Smlaier * (extended to support more than 2 drop precedence values) 38126385Smlaier */ 39126385Smlaier#define RIO_NDROPPREC 3 /* number of drop precedence values */ 40126385Smlaier 41126385Smlaier#ifdef ALTQ3_COMPAT 42126385Smlaierstruct rio_interface { 43126385Smlaier char rio_ifname[IFNAMSIZ]; 44126385Smlaier}; 45126385Smlaier 46126385Smlaierstruct rio_stats { 47126385Smlaier struct rio_interface iface; 48126385Smlaier int q_len[RIO_NDROPPREC]; 49126385Smlaier struct redstats q_stats[RIO_NDROPPREC]; 50126385Smlaier 51126385Smlaier /* static red parameters */ 52126385Smlaier int q_limit; 53126385Smlaier int weight; 54126385Smlaier int flags; 55126385Smlaier struct redparams q_params[RIO_NDROPPREC]; 56126385Smlaier}; 57126385Smlaier 58126385Smlaierstruct rio_conf { 59126385Smlaier struct rio_interface iface; 60126385Smlaier struct redparams q_params[RIO_NDROPPREC]; 61126385Smlaier int rio_weight; /* weight for EWMA */ 62126385Smlaier int rio_limit; /* max queue length */ 63126385Smlaier int rio_pkttime; /* average packet time in usec */ 64126385Smlaier int rio_flags; /* see below */ 65126385Smlaier}; 66126385Smlaier#endif /* ALTQ3_COMPAT */ 67126385Smlaier 68126385Smlaier/* rio flags */ 69126385Smlaier#define RIOF_ECN4 0x01 /* use packet marking for IPv4 packets */ 70126385Smlaier#define RIOF_ECN6 0x02 /* use packet marking for IPv6 packets */ 71126385Smlaier#define RIOF_ECN (RIOF_ECN4 | RIOF_ECN6) 72126385Smlaier#define RIOF_CLEARDSCP 0x200 /* clear diffserv codepoint */ 73126385Smlaier 74126385Smlaier#ifdef ALTQ3_COMPAT 75126385Smlaier/* 76126385Smlaier * IOCTLs for RIO 77126385Smlaier */ 78126385Smlaier#define RIO_IF_ATTACH _IOW('Q', 1, struct rio_interface) 79126385Smlaier#define RIO_IF_DETACH _IOW('Q', 2, struct rio_interface) 80126385Smlaier#define RIO_ENABLE _IOW('Q', 3, struct rio_interface) 81126385Smlaier#define RIO_DISABLE _IOW('Q', 4, struct rio_interface) 82126385Smlaier#define RIO_CONFIG _IOWR('Q', 6, struct rio_conf) 83126385Smlaier#define RIO_GETSTATS _IOWR('Q', 12, struct rio_stats) 84126385Smlaier#define RIO_SETDEFAULTS _IOW('Q', 30, struct redparams[RIO_NDROPPREC]) 85126385Smlaier#endif /* ALTQ3_COMPAT */ 86126385Smlaier 87126385Smlaier#ifdef _KERNEL 88126385Smlaier 89126385Smlaiertypedef struct rio { 90126385Smlaier /* per drop precedence structure */ 91126385Smlaier struct dropprec_state { 92126385Smlaier /* red parameters */ 93126385Smlaier int inv_pmax; /* inverse of max drop probability */ 94126385Smlaier int th_min; /* red min threshold */ 95126385Smlaier int th_max; /* red max threshold */ 96126385Smlaier 97126385Smlaier /* variables for internal use */ 98126385Smlaier int th_min_s; /* th_min scaled by avgshift */ 99126385Smlaier int th_max_s; /* th_max scaled by avgshift */ 100126385Smlaier int probd; /* drop probability denominator */ 101126385Smlaier 102126385Smlaier int qlen; /* queue length */ 103126385Smlaier int avg; /* (scaled) queue length average */ 104126385Smlaier int count; /* packet count since the last dropped/ 105126385Smlaier marked packet */ 106126385Smlaier int idle; /* queue was empty */ 107126385Smlaier int old; /* avg is above th_min */ 108126385Smlaier struct timeval last; /* timestamp when queue becomes idle */ 109126385Smlaier } rio_precstate[RIO_NDROPPREC]; 110126385Smlaier 111126385Smlaier int rio_wshift; /* log(red_weight) */ 112126385Smlaier int rio_weight; /* weight for EWMA */ 113126385Smlaier struct wtab *rio_wtab; /* weight table */ 114126385Smlaier 115126385Smlaier int rio_pkttime; /* average packet time in micro sec 116126385Smlaier used for idle calibration */ 117126385Smlaier int rio_flags; /* rio flags */ 118126385Smlaier 119126385Smlaier u_int8_t rio_codepoint; /* codepoint value to tag packets */ 120126385Smlaier u_int8_t rio_codepointmask; /* codepoint mask bits */ 121126385Smlaier 122126385Smlaier struct redstats q_stats[RIO_NDROPPREC]; /* statistics */ 123126385Smlaier} rio_t; 124126385Smlaier 125126385Smlaier#ifdef ALTQ3_COMPAT 126126385Smlaiertypedef struct rio_queue { 127126385Smlaier struct rio_queue *rq_next; /* next red_state in the list */ 128126385Smlaier struct ifaltq *rq_ifq; /* backpointer to ifaltq */ 129126385Smlaier 130126385Smlaier class_queue_t *rq_q; 131126385Smlaier 132126385Smlaier rio_t *rq_rio; 133126385Smlaier} rio_queue_t; 134126385Smlaier#endif /* ALTQ3_COMPAT */ 135126385Smlaier 136126385Smlaierextern rio_t *rio_alloc(int, struct redparams *, int, int); 137126385Smlaierextern void rio_destroy(rio_t *); 138126385Smlaierextern void rio_getstats(rio_t *, struct redstats *); 139126385Smlaierextern int rio_addq(rio_t *, class_queue_t *, struct mbuf *, 140126385Smlaier struct altq_pktattr *); 141126385Smlaierextern struct mbuf *rio_getq(rio_t *, class_queue_t *); 142126385Smlaier 143126385Smlaier#endif /* _KERNEL */ 144126385Smlaier 145126385Smlaier#endif /* _ALTQ_ALTQ_RIO_H_ */ 146