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/*
* Copyright (c) 2001-2003
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
* 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 THE AUTHOR 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 AUTHOR 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.
*
* Author: Hartmut Brandt <harti@freebsd.org>
*
* $Begemot: libunimsg/netnatm/msg/traffic.c,v 1.4 2004/07/08 08:22:05 brandt Exp $
*
* Traffic classification
*/
#include <netnatm/unimsg.h>
#include <netnatm/msg/unistruct.h>
#include <netnatm/msg/unimsglib.h>
#ifdef _KERNEL
#include <sys/systm.h>
#else
#include <stdio.h>
#endif
/*
* Try to set the parameters for the CPCS from the parameters of the
* connection.
*/
enum {
T_CBR23 = 100, T_nrtVBR2_6_UBR12, T_rtVBR236, T_rtVBR2_6
};
static const u_int fmask = UNI_TRAFFIC_FPCR0_P | UNI_TRAFFIC_FPCR1_P |
UNI_TRAFFIC_FSCR0_P | UNI_TRAFFIC_FSCR1_P | UNI_TRAFFIC_FMBS0_P |
UNI_TRAFFIC_FMBS1_P | UNI_TRAFFIC_FABR1_P;
static const u_int bmask = UNI_TRAFFIC_BPCR0_P | UNI_TRAFFIC_BPCR1_P |
UNI_TRAFFIC_BSCR0_P | UNI_TRAFFIC_BSCR1_P | UNI_TRAFFIC_BMBS0_P |
UNI_TRAFFIC_BMBS1_P | UNI_TRAFFIC_BABR1_P;
static const u_int fcbr3 = UNI_TRAFFIC_FPCR0_P | UNI_TRAFFIC_FPCR1_P;
static const u_int bcbr3 = UNI_TRAFFIC_BPCR0_P | UNI_TRAFFIC_BPCR1_P;
static const u_int fvbr16 = UNI_TRAFFIC_FPCR1_P | UNI_TRAFFIC_FSCR1_P |
UNI_TRAFFIC_FMBS1_P;
static const u_int bvbr16 = UNI_TRAFFIC_BPCR1_P | UNI_TRAFFIC_BSCR1_P |
UNI_TRAFFIC_BMBS1_P;
static const u_int fvbr23 = UNI_TRAFFIC_FPCR1_P | UNI_TRAFFIC_FSCR0_P |
UNI_TRAFFIC_FMBS0_P;
static const u_int bvbr23 = UNI_TRAFFIC_BPCR1_P | UNI_TRAFFIC_BSCR0_P |
UNI_TRAFFIC_BMBS0_P;
static const u_int fvbr4 = UNI_TRAFFIC_FPCR0_P | UNI_TRAFFIC_FPCR1_P;
static const u_int bvbr4 = UNI_TRAFFIC_BPCR0_P | UNI_TRAFFIC_BPCR1_P;
int
uni_classify_traffic(const struct uni_ie_bearer *bearer,
const struct uni_ie_traffic *traffic,
enum uni_traffic_class *fclass, enum uni_traffic_class *bclass,
char *ebuf, size_t ebufsiz)
{
u_int tclass;
u_int ft, bt, be, ftag, btag;
/* classify */
switch (bearer->bclass) {
case UNI_BEARER_A:
if (!(bearer->h.present & UNI_BEARER_ATC_P)) {
tclass = T_CBR23;
break;
}
switch (bearer->atc) {
case UNI_BEARER_ATC_CBR1:
tclass = UNI_TRAFFIC_CBR1;
break;
default:
snprintf(ebuf, ebufsiz, "bad ATC=%#02x for BCOB-A",
bearer->atc);
return (-1);
}
break;
case UNI_BEARER_C:
if (!(bearer->h.present & UNI_BEARER_ATC_P)) {
tclass = T_nrtVBR2_6_UBR12;
break;
}
switch (bearer->atc) {
case UNI_BEARER_ATC_VBR1:
tclass = UNI_TRAFFIC_rtVBR1;
break;
case UNI_BEARER_ATC_VBR:
tclass = T_rtVBR236;
break;
case UNI_BEARER_ATC_NVBR1:
tclass = UNI_TRAFFIC_nrtVBR1;
break;
case UNI_BEARER_ATC_ABR:
tclass = UNI_TRAFFIC_ABR;
break;
default:
snprintf(ebuf, ebufsiz, "bad ATC=%#02x for BCOB-C",
bearer->atc);
return (-1);
}
break;
case UNI_BEARER_X:
if (!(bearer->h.present & UNI_BEARER_ATC_P)) {
tclass = T_nrtVBR2_6_UBR12;
break;
}
switch (bearer->atc) {
case UNI_BEARER_ATC_CBR1:
tclass = UNI_TRAFFIC_CBR1;
break;
case UNI_BEARER_ATC_CBR:
case UNI_BEARER_ATCX_4:
case UNI_BEARER_ATCX_6:
tclass = T_CBR23;
break;
case UNI_BEARER_ATC_VBR1:
tclass = UNI_TRAFFIC_rtVBR1;
break;
case UNI_BEARER_ATCX_1:
case UNI_BEARER_ATC_VBR:
tclass = T_rtVBR2_6;
break;
case UNI_BEARER_ATC_NVBR1:
tclass = UNI_TRAFFIC_nrtVBR1;
break;
case UNI_BEARER_ATCX_0:
case UNI_BEARER_ATCX_2:
case UNI_BEARER_ATCX_8:
case UNI_BEARER_ATC_NVBR:
tclass = T_nrtVBR2_6_UBR12;
break;
case UNI_BEARER_ATC_ABR:
tclass = UNI_TRAFFIC_ABR;
break;
default:
snprintf(ebuf, ebufsiz, "bad ATC=%#02x for BCOB-X",
bearer->atc);
return (-1);
}
break;
case UNI_BEARER_TVP:
snprintf(ebuf, ebufsiz, "unsupported bearer class tVP");
return (-1);
default:
snprintf(ebuf, ebufsiz, "bad bearer class %#02x",
bearer->bclass);
return (-1);
}
/*
* Now traffic IE
*/
ft = traffic->h.present & fmask;
bt = traffic->h.present & bmask;
be = traffic->h.present & UNI_TRAFFIC_BEST_P;
ftag = (traffic->h.present & UNI_TRAFFIC_MOPT_P) && traffic->t.ftag;
btag = (traffic->h.present & UNI_TRAFFIC_MOPT_P) && traffic->t.btag;
#define NOBE(C) \
if (be) { \
snprintf(ebuf, ebufsiz, "illegal BE for " C); \
return (-1); \
}
#define NOFT(C) \
if (ftag) { \
snprintf(ebuf, ebufsiz, "illegal forward tag in " C); \
return (-1); \
}
#define NOBT(C) \
if (btag) { \
snprintf(ebuf, ebufsiz, "illegal backward tag in " C); \
return (-1); \
}
#define FBAD(C) do { \
snprintf(ebuf, ebufsiz, "bad forward CRs for " C); \
return (-1); \
} while (0)
#define BBAD(C) do { \
snprintf(ebuf, ebufsiz, "bad backward CRs for " C); \
return (-1); \
} while (0)
switch (tclass) {
case UNI_TRAFFIC_CBR1:
NOBE("CBR.1");
if (ft != UNI_TRAFFIC_FPCR1_P)
FBAD("CBR.1");
NOFT("CBR.1");
if (bt != UNI_TRAFFIC_BPCR1_P)
BBAD("CBR.1");
NOBT("CBR.1");
*fclass = *bclass = UNI_TRAFFIC_CBR1;
break;
case T_CBR23:
NOBE("CBR.2/3");
if (ft == UNI_TRAFFIC_FPCR0_P) {
*fclass = UNI_TRAFFIC_CBR2;
NOFT("CBR.2");
} else if (ft == fcbr3) {
*fclass = UNI_TRAFFIC_CBR3;
if (!ftag) {
snprintf(ebuf, ebufsiz, "need forward tagging for CBR.3");
return (-1);
}
} else
FBAD("CBR.2/3");
if (bt == UNI_TRAFFIC_BPCR0_P) {
*bclass = UNI_TRAFFIC_CBR2;
NOBT("CBR.2");
} else if (bt == bcbr3) {
*bclass = UNI_TRAFFIC_CBR3;
if (!btag) {
snprintf(ebuf, ebufsiz, "need backward tagging for CBR.3");
return (-1);
}
} else
BBAD("CBR.2/3");
break;
case UNI_TRAFFIC_rtVBR1:
NOBE("rtVBR.1");
if (ft != fvbr16)
FBAD("rtVBR.1");
NOFT("rtVBR.1");
if (bt != bvbr16)
BBAD("rtVBR.1");
NOBT("rtVBR.1");
*fclass = *bclass = UNI_TRAFFIC_rtVBR1;
break;
case T_rtVBR236:
NOBE("rtVBR.2/3/6");
if (ft == fvbr23) {
if (ftag)
*fclass = UNI_TRAFFIC_rtVBR3;
else
*fclass = UNI_TRAFFIC_rtVBR2;
} else if (ft == fvbr16) {
*fclass = UNI_TRAFFIC_rtVBR6;
NOFT("rtVBR.6");
} else
FBAD("rtVBR.2/3/6");
if (bt == bvbr23) {
if (btag)
*bclass = UNI_TRAFFIC_rtVBR3;
else
*bclass = UNI_TRAFFIC_rtVBR2;
} else if (bt == bvbr16) {
*bclass = UNI_TRAFFIC_rtVBR6;
NOBT("rtVBR.6");
} else
BBAD("rtVBR.2/3/6");
break;
case T_rtVBR2_6:
NOBE("rtVBR.2-6");
if (ft == fvbr23) {
if (ftag)
*fclass = UNI_TRAFFIC_rtVBR3;
else
*fclass = UNI_TRAFFIC_rtVBR2;
} else if (ft == fvbr4) {
*fclass = UNI_TRAFFIC_rtVBR4;
} else if (ft == UNI_TRAFFIC_FPCR1_P) {
*fclass = UNI_TRAFFIC_rtVBR5;
NOFT("rtVBR.5");
} else if (ft == fvbr16) {
*fclass = UNI_TRAFFIC_rtVBR6;
NOFT("rtVBR.6");
} else
FBAD("rtVBR.2-6");
if (bt == bvbr23) {
if (btag)
*bclass = UNI_TRAFFIC_rtVBR3;
else
*bclass = UNI_TRAFFIC_rtVBR2;
} else if (bt == bvbr4) {
*bclass = UNI_TRAFFIC_rtVBR4;
} else if (bt == UNI_TRAFFIC_BPCR1_P) {
*bclass = UNI_TRAFFIC_rtVBR5;
NOBT("rtVBR.5");
} else if (bt == bvbr16) {
*bclass = UNI_TRAFFIC_rtVBR6;
NOBT("rtVBR.6");
} else
BBAD("rtVBR.2-6");
break;
case UNI_TRAFFIC_nrtVBR1:
NOBE("nrtVBR.1");
if (ft != fvbr16)
FBAD("nrtVBR.1");
NOFT("nrtVBR.1");
if (bt != bvbr16)
BBAD("nrtVBR.1");
NOBT("nrtVBR.1");
*fclass = *bclass = UNI_TRAFFIC_nrtVBR1;
break;
case T_nrtVBR2_6_UBR12:
if (be) {
if (ft != UNI_TRAFFIC_FPCR1_P)
FBAD("UBR.1/2");
if (bt != UNI_TRAFFIC_BPCR1_P)
BBAD("UBR.1/2");
if (ftag)
*fclass = UNI_TRAFFIC_UBR2;
else
*fclass = UNI_TRAFFIC_UBR1;
if (btag)
*bclass = UNI_TRAFFIC_UBR2;
else
*bclass = UNI_TRAFFIC_UBR1;
break;
}
if (ft == fvbr23) {
if (ftag)
*fclass = UNI_TRAFFIC_nrtVBR3;
else
*fclass = UNI_TRAFFIC_nrtVBR2;
} else if (ft == fvbr4) {
*fclass = UNI_TRAFFIC_nrtVBR4;
} else if (ft == UNI_TRAFFIC_FPCR1_P) {
*fclass = UNI_TRAFFIC_nrtVBR5;
NOFT("nrtVBR.5");
} else if (ft == fvbr16) {
*fclass = UNI_TRAFFIC_nrtVBR6;
NOFT("nrtVBR.6");
} else
FBAD("nrtVBR.2-6");
if (bt == bvbr23) {
if (btag)
*bclass = UNI_TRAFFIC_nrtVBR3;
else
*bclass = UNI_TRAFFIC_nrtVBR2;
} else if (bt == bvbr4) {
*bclass = UNI_TRAFFIC_nrtVBR4;
} else if (bt == UNI_TRAFFIC_BPCR1_P) {
*bclass = UNI_TRAFFIC_nrtVBR5;
NOBT("nrtVBR.5");
} else if (bt == bvbr16) {
*bclass = UNI_TRAFFIC_nrtVBR6;
NOBT("nrtVBR.6");
} else
BBAD("nrtVBR.2-6");
break;
case UNI_TRAFFIC_ABR:
NOBE("ABR");
if (ft != UNI_TRAFFIC_FPCR1_P)
FBAD("ABR");
if (bt != UNI_TRAFFIC_BPCR1_P)
BBAD("ABR");
NOFT("ABR");
NOBT("ABR");
*fclass = *bclass = UNI_TRAFFIC_ABR;
break;
}
return (0);
}