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- generic Arcnet framework

Browse Source 
- device driver for SMC COM90cx6 Arcnet network adapters

Obtained from:	NetBSD
This commit is contained in:
Max Khon 2002-01-08 20:03:13 +00:00
parent b8f52f738a
commit eda6ecb22a
12 changed files with 2225 additions and 0 deletions
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9
sys/conf/NOTES
View File

@ -509,6 +509,7 @@ device musycc # LMC/SBE LMC1504 quad T1/E1
# Ethernets; it is MANDATORY when a Ethernet device driver is
# configured or token-ring is enabled.
# The `fddi' device provides generic code to support FDDI.
# The `arcnet' device provides generic code to support Arcnet.
# The `sppp' device serves a similar role for certain types
# of synchronous PPP links (like `cx', `ar').
# The `sl' device implements the Serial Line IP (SLIP) service.
@ -543,6 +544,7 @@ device ether #Generic Ethernet
device vlan #VLAN support
device token #Generic TokenRing
device fddi #Generic FDDI
device arcnet #Generic Arcnet
device sppp #Generic Synchronous PPP
device loop 1 #Network loopback device
device bpf #Berkeley packet filter
@ -1711,6 +1713,8 @@ device miibus
# the SysKonnect SK-9D21 and SK-9D41, and the embedded gigE NICs
# on Dell PowerEdge 2550 servers.
# cnw: Xircom CNW/Netware Airsurfer PC Card adapter
# cm: Arcnet SMC COM90c26 / SMC COM90c56
# (and SMC COM90c66 in '56 compatibility mode) adapters.
# cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters
# cx: Cronyx/Sigma multiport sync/async (with Cisco or PPP framing)
# dc: Support for PCI fast ethernet adapters based on the DEC/Intel 21143
@ -1829,6 +1833,11 @@ hint.ar.0.at="isa"
hint.ar.0.port="0x300"
hint.ar.0.irq="10"
hint.ar.0.maddr="0xd0000"
device cm
hint.cm.0.at="isa"
hint.cm.0.port="0x2e0"
hint.cm.0.irq="9"
hint.cm.0.maddr="0xdc000"
device cs
hint.cs.0.at="isa"
hint.cs.0.port="0x300"

2
sys/conf/files
View File

@ -289,6 +289,7 @@ dev/cardbus/cardbus.c optional cardbus
dev/cardbus/cardbus_cis.c optional cardbus
dev/ccd/ccd.c optional ccd
dev/ciss/ciss.c optional ciss
dev/cm/smc90cx6.c optional cm
dev/cnw/if_cnw.c optional cnw card
#dev/cnw/if_cnw.c optional cnw pccard
dev/cs/if_cs.c optional cs
@ -907,6 +908,7 @@ bpf.h standard \
net/bridge.c optional bridge
net/bsd_comp.c optional ppp_bsdcomp
net/if.c standard
net/if_arcsubr.c optional arcnet
net/if_atmsubr.c optional atm
net/if_disc.c optional disc
net/if_ef.c optional ef

1
sys/conf/files.i386
View File

@ -96,6 +96,7 @@ crypto/des/des_setkey.c optional netsmbcrypto
dev/advansys/adv_isa.c optional adv isa
dev/aic/aic_isa.c optional aic isa
dev/ar/if_ar_isa.c optional ar isa
dev/cm/if_cm_isa.c optional cm isa
dev/ed/if_ed_isa.c optional ed isa
dev/eisa/eisaconf.c optional eisa
dev/em/if_em.c optional em

135
sys/dev/cm/if_cm_isa.c Normal file
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@ -0,0 +1,135 @@
/* $NetBSD: if_bah_zbus.c,v 1.6 2000/01/23 21:06:12 aymeric Exp $ */
/* $FreeBSD$ */
/*-
* Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ignatios Souvatzis.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <net/if.h>
#include <net/if_arc.h>
#include <dev/cm/smc90cx6var.h>
static int cm_isa_probe __P((device_t));
static int cm_isa_attach __P((device_t));
static int
cm_isa_probe(dev)
device_t dev;
{
struct cm_softc *sc = device_get_softc(dev);
int error;
bzero(sc, sizeof(struct cm_softc));
error = cm_probe(dev);
if (error == 0)
goto end;
end:
if (error == 0)
error = cm_alloc_irq(dev, 0);
cm_release_resources(dev);
return (error);
}
static int
cm_isa_attach(dev)
device_t dev;
{
struct cm_softc *sc = device_get_softc(dev);
int error;
cm_alloc_port(dev, sc->port_rid, sc->port_used);
cm_alloc_memory(dev, sc->mem_rid, sc->mem_used);
cm_alloc_irq(dev, sc->irq_rid);
error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET,
cmintr, sc, &sc->irq_handle);
if (error) {
cm_release_resources(dev);
return (error);
}
return cm_attach(sc, device_get_unit(dev));
}
static int
cm_isa_detach(device_t dev)
{
struct cm_softc *sc = device_get_softc(dev);
struct ifnet *ifp = &sc->sc_arccom.ac_if;
int s;
cm_stop(sc);
ifp->if_flags &= ~IFF_RUNNING;
s = splimp();
arc_ifdetach(&sc->sc_arccom.ac_if);
splx(s);
bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
cm_release_resources(dev);
return (0);
}
static device_method_t cm_isa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, cm_isa_probe),
DEVMETHOD(device_attach, cm_isa_attach),
DEVMETHOD(device_detach, cm_isa_detach),
{ 0, 0 }
};
static driver_t cm_isa_driver = {
"cm",
cm_isa_methods,
sizeof(struct cm_softc)
};
DRIVER_MODULE(if_cm, isa, cm_isa_driver, cm_devclass, 0, 0);

1071
sys/dev/cm/smc90cx6.c Normal file
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File diff suppressed because it is too large Load Diff

91
sys/dev/cm/smc90cx6reg.h Normal file
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@ -0,0 +1,91 @@
/* $NetBSD: smc90cx6reg.h,v 1.7 1999/02/16 23:34:13 is Exp $ */
/* $FreeBSD$ */
/*-
* Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ignatios Souvatzis.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*/
/*
* chip offsets and bits for the SMC Arcnet chipset.
*/
#ifndef _SMC90CXVAR_H_
#define _SMC90CXVAR_H_
#define CM_IO_PORTS 16
/* register offsets */
#define CMSTAT 0
#define CMCMD 1
#define CMRESET 8
/* memory offsets */
#define CMCHECKBYTE 0
#define CMMACOFF 1
#define CM_TXDIS 0x01
#define CM_RXDIS 0x02
#define CM_TX(x) (0x03 | ((x)<<3))
#define CM_RX(x) (0x04 | ((x)<<3))
#define CM_RXBC(x) (0x84 | ((x)<<3))
#define CM_CONF(x) (0x05 | (x))
#define CLR_POR 0x08
#define CLR_RECONFIG 0x10
#define CM_CLR(x) (0x06 | (x))
#define CONF_LONG 0x08
#define CONF_SHORT 0x00
/*
* These are not in the COM90C65 docs. Derived from the arcnet.asm
* packet driver by Philippe Prindeville and Russel Nelson.
*/
#define CM_LDTST(x) (0x07 | (x))
#define TEST_ON 0x08
#define TEST_OFF 0x00
#define CM_TA 1 /* int mask also */
#define CM_TMA 2
#define CM_RECON 4 /* int mask also */
#define CM_TEST 8 /* not in the COM90C65 docs (see above) */
#define CM_POR 0x10 /* non maskable interrupt */
#define CM_ET1 0x20 /* timeout value bits, normally 1 */
#define CM_ET2 0x40 /* timeout value bits, normally 1 */
#define CM_RI 0x80 /* int mask also */
#endif

103
sys/dev/cm/smc90cx6var.h Normal file
View File

@ -0,0 +1,103 @@
/* $NetBSD: smc90cx6var.h,v 1.5 2000/03/23 07:01:32 thorpej Exp $ */
/* $FreeBSD$ */
/*-
* Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ignatios Souvatzis.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*/
/*
* BAH (SMC 8bit ARCnet chipset) k/dpi
*
* The SMC 8bit ARCnet chip family uses a register and a memory window, which
* we get passed via bus_space_tags and bus_space_handles.
*
* As the reset functionality differs between the Amiga boards (using the
* 90c26 chip) and middle-aged ISA boards (using the 90c56 chip), we have
* a sc_reset callback function in the softc, which does a stop function
* (reset and leave dead) or a reset function depending on wether the 2nd
* parameter is 0 or 1.
*/
#ifndef _SMC90CX6VAR_H_
#define _SMC90CX6VAR_H_
#include <sys/callout.h>
struct cm_softc {
struct arccom sc_arccom; /* Common arcnet structures */
int port_rid; /* resource id for port range */
struct resource *port_res; /* resource for port range */
int port_used; /* ports used */
int mem_rid; /* resource id for memory range */
struct resource *mem_res; /* resource for memory range */
int mem_used; /* memory used */
int irq_rid; /* resource id for irq */
struct resource *irq_res; /* resource for irq */
void * irq_handle; /* handle for irq handler */
void *sc_rxcookie; /* softcallback cookies */
void *sc_txcookie;
struct callout sc_recon_ch;
u_long sc_recontime; /* seconds only, I'm lazy */
u_long sc_reconcount; /* for the above */
u_long sc_reconcount_excessive; /* for the above */
#define ARC_EXCESSIVE_RECONS 20
#define ARC_EXCESSIVE_RECONS_REWARN 400
u_char sc_intmask;
u_char sc_rx_act; /* 2..3 */
u_char sc_tx_act; /* 0..1 */
u_char sc_rx_fillcount;
u_char sc_tx_fillcount;
u_char sc_broadcast[2]; /* is it a broadcast packet? */
u_char sc_retransmits[2]; /* unused at the moment */
};
int cm_attach __P((struct cm_softc *, int unit));
void cmintr __P((void *));
int cm_probe __P((device_t dev));
void cm_stop __P((struct cm_softc *sc));
int cm_alloc_port __P((device_t dev, int rid, int size));
int cm_alloc_memory __P((device_t dev, int rid, int size));
int cm_alloc_irq __P((device_t dev, int rid));
void cm_release_resources __P((device_t dev));
extern devclass_t cm_devclass;
#endif

9
sys/i386/conf/NOTES
View File

@ -509,6 +509,7 @@ device musycc # LMC/SBE LMC1504 quad T1/E1
# Ethernets; it is MANDATORY when a Ethernet device driver is
# configured or token-ring is enabled.
# The `fddi' device provides generic code to support FDDI.
# The `arcnet' device provides generic code to support Arcnet.
# The `sppp' device serves a similar role for certain types
# of synchronous PPP links (like `cx', `ar').
# The `sl' device implements the Serial Line IP (SLIP) service.
@ -543,6 +544,7 @@ device ether #Generic Ethernet
device vlan #VLAN support
device token #Generic TokenRing
device fddi #Generic FDDI
device arcnet #Generic Arcnet
device sppp #Generic Synchronous PPP
device loop 1 #Network loopback device
device bpf #Berkeley packet filter
@ -1711,6 +1713,8 @@ device miibus
# the SysKonnect SK-9D21 and SK-9D41, and the embedded gigE NICs
# on Dell PowerEdge 2550 servers.
# cnw: Xircom CNW/Netware Airsurfer PC Card adapter
# cm: Arcnet SMC COM90c26 / SMC COM90c56
# (and SMC COM90c66 in '56 compatibility mode) adapters.
# cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters
# cx: Cronyx/Sigma multiport sync/async (with Cisco or PPP framing)
# dc: Support for PCI fast ethernet adapters based on the DEC/Intel 21143
@ -1829,6 +1833,11 @@ hint.ar.0.at="isa"
hint.ar.0.port="0x300"
hint.ar.0.irq="10"
hint.ar.0.maddr="0xd0000"
device cm
hint.cm.0.at="isa"
hint.cm.0.port="0x2e0"
hint.cm.0.irq="9"
hint.cm.0.maddr="0xdc000"
device cs
hint.cs.0.at="isa"
hint.cs.0.port="0x300"

2
sys/modules/Makefile
View File

@ -117,11 +117,13 @@ SUBDIR+=aac \
acpi \
aic \
ar \
arcnet \
apm \
asr \
atspeaker \
bktr \
ciss \
cm \
coff \
el \
em \

12
sys/modules/arcnet/Makefile Normal file
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@ -0,0 +1,12 @@
# $FreeBSD$
.PATH: ${.CURDIR}/../../net
KMOD= arcnet
SRCS= if_arcsubr.c
SRCS+= opt_inet.h opt_inet6.h
opt_inet.h opt_inet6.h:
echo "#define INET 1" > ${.TARGET}
.include <bsd.kmod.mk>

10
sys/modules/cm/Makefile Normal file
View File

@ -0,0 +1,10 @@
# $FreeBSD$
.PATH: ${.CURDIR}/../../dev/cm
KMOD= if_cm
SRCS= smc90cx6.c if_cm_isa.c
SRCS+= bus_if.h device_if.h isa_if.h
.include <bsd.kmod.mk>

780
sys/net/if_arcsubr.c Normal file
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@ -0,0 +1,780 @@
/* $NetBSD: if_arcsubr.c,v 1.36 2001/06/14 05:44:23 itojun Exp $ */
/* $FreeBSD$ */
/*
* Copyright (c) 1994, 1995 Ignatios Souvatzis
* Copyright (c) 1982, 1989, 1993
* The Regents of the University of California. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* from: NetBSD: if_ethersubr.c,v 1.9 1994/06/29 06:36:11 cgd Exp
* @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93
*
*/
#include "opt_inet.h"
#include "opt_inet6.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <machine/cpu.h>
#include <net/if.h>
#include <net/netisr.h>
#include <net/route.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/if_arc.h>
#include <net/if_arp.h>
#include <net/bpf.h>
#if defined(INET) || defined(INET6)
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#endif
#ifdef INET6
#include <netinet6/nd6.h>
#endif
MODULE_VERSION(arcnet, 1);
#define ARCNET_ALLOW_BROKEN_ARP
static struct mbuf *arc_defrag __P((struct ifnet *, struct mbuf *));
u_int8_t arcbroadcastaddr = 0;
#define senderr(e) { error = (e); goto bad;}
#define SIN(s) ((struct sockaddr_in *)s)
/*
* ARCnet output routine.
* Encapsulate a packet of type family for the local net.
* Assumes that ifp is actually pointer to arccom structure.
*/
int
arc_output(ifp, m, dst, rt0)
struct ifnet *ifp;
struct mbuf *m;
struct sockaddr *dst;
struct rtentry *rt0;
{
struct mbuf *mcopy;
struct rtentry *rt;
struct arccom *ac;
struct arc_header *ah;
struct arphdr *arph;
int error;
u_int8_t atype, adst;
#if __FreeBSD_version < 500000
int s;
#endif
if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
return(ENETDOWN); /* m, m1 aren't initialized yet */
error = 0;
ac = (struct arccom *)ifp;
mcopy = NULL;
if ((rt = rt0)) {
if ((rt->rt_flags & RTF_UP) == 0) {
if ((rt0 = rt = rtalloc1(dst, 1, 0UL)))
rt->rt_refcnt--;
else
senderr(EHOSTUNREACH);
}
if (rt->rt_flags & RTF_GATEWAY) {
if (rt->rt_gwroute == 0)
goto lookup;
if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
rtfree(rt); rt = rt0;
lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1, 0UL);
if ((rt = rt->rt_gwroute) == 0)
senderr(EHOSTUNREACH);
}
}
if (rt->rt_flags & RTF_REJECT)
if (rt->rt_rmx.rmx_expire == 0 ||
time_second < rt->rt_rmx.rmx_expire)
senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
}
switch (dst->sa_family) {
#ifdef INET
case AF_INET:
/*
* For now, use the simple IP addr -> ARCnet addr mapping
*/
if (m->m_flags & (M_BCAST|M_MCAST))
adst = arcbroadcastaddr; /* ARCnet broadcast address */
else if (ifp->if_flags & IFF_NOARP)
adst = ntohl(SIN(dst)->sin_addr.s_addr) & 0xFF;
else if (!arpresolve(ifp, rt, m, dst, &adst, rt0))
return 0; /* not resolved yet */
/* If broadcasting on a simplex interface, loopback a copy */
if ((m->m_flags & (M_BCAST|M_MCAST)) &&
(ifp->if_flags & IFF_SIMPLEX))
mcopy = m_copy(m, 0, (int)M_COPYALL);
atype = (ifp->if_flags & IFF_LINK0) ?
ARCTYPE_IP_OLD : ARCTYPE_IP;
break;
#endif
#ifdef INET6
case AF_INET6:
#ifdef OLDIP6OUTPUT
if (!nd6_resolve(ifp, rt, m, dst, (u_char *)&adst))
return(0); /* if not yet resolves */
#else
if (!nd6_storelladdr(ifp, rt, m, dst, (u_char *)&adst))
return(0); /* it must be impossible, but... */
#endif /* OLDIP6OUTPUT */
atype = ARCTYPE_INET6;
break;
#endif
case AF_UNSPEC:
ah = (struct arc_header *)dst->sa_data;
adst = ah->arc_dhost;
atype = ah->arc_type;
if (atype == ARCTYPE_ARP) {
atype = (ifp->if_flags & IFF_LINK0) ?
ARCTYPE_ARP_OLD: ARCTYPE_ARP;
#ifdef ARCNET_ALLOW_BROKEN_ARP
/*
* XXX It's not clear per RFC826 if this is needed, but
* "assigned numbers" say this is wrong.
* However, e.g., AmiTCP 3.0Beta used it... we make this
* switchable for emergency cases. Not perfect, but...
*/
arph = mtod(m, struct arphdr *);
if (ifp->if_flags & IFF_LINK2)
arph->ar_pro = atype - 1;
#endif
}
break;
default:
printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
dst->sa_family);
senderr(EAFNOSUPPORT);
}
if (mcopy)
(void) if_simloop(ifp, mcopy, dst->sa_family, 0);
M_PREPEND(m, ARC_HDRLEN, M_DONTWAIT);
if (m == 0)
senderr(ENOBUFS);
ah = mtod(m, struct arc_header *);
ah->arc_type = atype;
ah->arc_dhost = adst;
ah->arc_shost = *IF_LLADDR(ifp);
if (ifp->if_bpf)
bpf_mtap(ifp, m);
#if __FreeBSD_version < 500000
s = splimp();
/*
* Queue message on interface, and start output if interface
* not yet active.
*/
if (IF_QFULL(&ifp->if_snd)) {
IF_DROP(&ifp->if_snd);
splx(s);
senderr(ENOBUFS);
}
ifp->if_obytes += m->m_pkthdr.len;
IF_ENQUEUE(&ifp->if_snd, m);
if ((ifp->if_flags & IFF_OACTIVE) == 0)
(*ifp->if_start)(ifp);
splx(s);
#else
if (!IF_HANDOFF(&ifp->if_snd, m, ifp)) {
m = 0;
senderr(ENOBUFS);
}
#endif
return (error);
bad:
if (m)
m_freem(m);
return (error);
}
void
arc_frag_init(ifp)
struct ifnet *ifp;
{
struct arccom *ac;
ac = (struct arccom *)ifp;
ac->curr_frag = 0;
}
struct mbuf *
arc_frag_next(ifp)
struct ifnet *ifp;
{
struct arccom *ac;
struct mbuf *m;
struct arc_header *ah;
ac = (struct arccom *)ifp;
if ((m = ac->curr_frag) == 0) {
int tfrags;
/* dequeue new packet */
IF_DEQUEUE(&ifp->if_snd, m);
if (m == 0)
return 0;
ah = mtod(m, struct arc_header *);
if (!arc_isphds(ah->arc_type))
return m;
++ac->ac_seqid; /* make the seqid unique */
tfrags = (m->m_pkthdr.len + 503) / 504;
ac->fsflag = 2 * tfrags - 3;
ac->sflag = 0;
ac->rsflag = ac->fsflag;
ac->arc_dhost = ah->arc_dhost;
ac->arc_shost = ah->arc_shost;
ac->arc_type = ah->arc_type;
m_adj(m, ARC_HDRLEN);
ac->curr_frag = m;
}
/* split out next fragment and return it */
if (ac->sflag < ac->fsflag) {
/* we CAN'T have short packets here */
ac->curr_frag = m_split(m, 504, M_DONTWAIT);
if (ac->curr_frag == 0) {
m_free(m);
return 0;
}
M_PREPEND(m, ARC_HDRNEWLEN, M_DONTWAIT);
if (m == 0) {
m_free(ac->curr_frag);
ac->curr_frag = 0;
m_free(m);
return 0;
}
ah = mtod(m, struct arc_header *);
ah->arc_flag = ac->rsflag;
ah->arc_seqid = ac->ac_seqid;
ac->sflag += 2;
ac->rsflag = ac->sflag;
} else if ((m->m_pkthdr.len >=
ARC_MIN_FORBID_LEN - ARC_HDRNEWLEN + 2) &&
(m->m_pkthdr.len <=
ARC_MAX_FORBID_LEN - ARC_HDRNEWLEN + 2)) {
ac->curr_frag = 0;
M_PREPEND(m, ARC_HDRNEWLEN_EXC, M_DONTWAIT);
if (m == 0)
return 0;
ah = mtod(m, struct arc_header *);
ah->arc_flag = 0xFF;
ah->arc_seqid = 0xFFFF;
ah->arc_type2 = ac->arc_type;
ah->arc_flag2 = ac->sflag;
ah->arc_seqid2 = ac->ac_seqid;
} else {
ac->curr_frag = 0;
M_PREPEND(m, ARC_HDRNEWLEN, M_DONTWAIT);
if (m == 0)
return 0;
ah = mtod(m, struct arc_header *);
ah->arc_flag = ac->sflag;
ah->arc_seqid = ac->ac_seqid;
}
ah->arc_dhost = ac->arc_dhost;
ah->arc_shost = ac->arc_shost;
ah->arc_type = ac->arc_type;
return m;
}
/*
* Defragmenter. Returns mbuf if last packet found, else
* NULL. frees imcoming mbuf as necessary.
*/
__inline struct mbuf *
arc_defrag(ifp, m)
struct ifnet *ifp;
struct mbuf *m;
{
struct arc_header *ah, *ah1;
struct arccom *ac;
struct ac_frag *af;
struct mbuf *m1;
char *s;
int newflen;
u_char src,dst,typ;
ac = (struct arccom *)ifp;
if (m->m_len < ARC_HDRNEWLEN) {
m = m_pullup(m, ARC_HDRNEWLEN);
if (m == NULL) {
++ifp->if_ierrors;
return NULL;
}
}
ah = mtod(m, struct arc_header *);
typ = ah->arc_type;
if (!arc_isphds(typ))
return m;
src = ah->arc_shost;
dst = ah->arc_dhost;
if (ah->arc_flag == 0xff) {
m_adj(m, 4);
if (m->m_len < ARC_HDRNEWLEN) {
m = m_pullup(m, ARC_HDRNEWLEN);
if (m == NULL) {
++ifp->if_ierrors;
return NULL;
}
}
ah = mtod(m, struct arc_header *);
}
af = &ac->ac_fragtab[src];
m1 = af->af_packet;
s = "debug code error";
if (ah->arc_flag & 1) {
/*
* first fragment. We always initialize, which is
* about the right thing to do, as we only want to
* accept one fragmented packet per src at a time.
*/
if (m1 != NULL)
m_freem(m1);
af->af_packet = m;
m1 = m;
af->af_maxflag = ah->arc_flag;
af->af_lastseen = 0;
af->af_seqid = ah->arc_seqid;
return NULL;
/* notreached */
} else {
/* check for unfragmented packet */
if (ah->arc_flag == 0)
return m;
/* do we have a first packet from that src? */
if (m1 == NULL) {
s = "no first frag";
goto outofseq;
}
ah1 = mtod(m1, struct arc_header *);
if (ah->arc_seqid != ah1->arc_seqid) {
s = "seqid differs";
goto outofseq;
}
if (typ != ah1->arc_type) {
s = "type differs";
goto outofseq;
}
if (dst != ah1->arc_dhost) {
s = "dest host differs";
goto outofseq;
}
/* typ, seqid and dst are ok here. */
if (ah->arc_flag == af->af_lastseen) {
m_freem(m);
return NULL;
}
if (ah->arc_flag == af->af_lastseen + 2) {
/* ok, this is next fragment */
af->af_lastseen = ah->arc_flag;
m_adj(m,ARC_HDRNEWLEN);
/*
* m_cat might free the first mbuf (with pkthdr)
* in 2nd chain; therefore:
*/
newflen = m->m_pkthdr.len;
m_cat(m1,m);
m1->m_pkthdr.len += newflen;
/* is it the last one? */
if (af->af_lastseen > af->af_maxflag) {
af->af_packet = NULL;
return(m1);
} else
return NULL;
}
s = "other reason";
/* if all else fails, it is out of sequence, too */
}
outofseq:
if (m1) {
m_freem(m1);
af->af_packet = NULL;
}
if (m)
m_freem(m);
log(LOG_INFO,"%s%d: got out of seq. packet: %s\n",
ifp->if_name, ifp->if_unit, s);
return NULL;
}
/*
* return 1 if Packet Header Definition Standard, else 0.
* For now: old IP, old ARP aren't obviously. Lacking correct information,
* we guess that besides new IP and new ARP also IPX and APPLETALK are PHDS.
* (Apple and Novell corporations were involved, among others, in PHDS work).
* Easiest is to assume that everybody else uses that, too.
*/
int
arc_isphds(type)
u_int8_t type;
{
return (type != ARCTYPE_IP_OLD &&
type != ARCTYPE_ARP_OLD &&
type != ARCTYPE_DIAGNOSE);
}
/*
* Process a received Arcnet packet;
* the packet is in the mbuf chain m with
* the ARCnet header.
*/
void
arc_input(ifp, m)
struct ifnet *ifp;
struct mbuf *m;
{
struct arc_header *ah;
struct ifqueue *inq;
u_int8_t atype;
#ifdef INET
struct arphdr *arph;
#endif
#if __FreeBSD_version < 500000
int s;
#endif
if ((ifp->if_flags & IFF_UP) == 0) {
m_freem(m);
return;
}
/* possibly defragment: */
m = arc_defrag(ifp, m);
if (m == NULL)
return;
if (ifp->if_bpf)
bpf_mtap(ifp, m);
ah = mtod(m, struct arc_header *);
ifp->if_ibytes += m->m_pkthdr.len;
if (arcbroadcastaddr == ah->arc_dhost) {
m->m_flags |= M_BCAST|M_MCAST;
ifp->if_imcasts++;
}
atype = ah->arc_type;
switch (atype) {
#ifdef INET
case ARCTYPE_IP:
m_adj(m, ARC_HDRNEWLEN);
schednetisr(NETISR_IP);
inq = &ipintrq;
break;
case ARCTYPE_IP_OLD:
m_adj(m, ARC_HDRLEN);
schednetisr(NETISR_IP);
inq = &ipintrq;
break;
case ARCTYPE_ARP:
if (ifp->if_flags & IFF_NOARP) {
/* Discard packet if ARP is disabled on interface */
m_freem(m);
return;
}
m_adj(m, ARC_HDRNEWLEN);
schednetisr(NETISR_ARP);
inq = &arpintrq;
#ifdef ARCNET_ALLOW_BROKEN_ARP
mtod(m, struct arphdr *)->ar_pro = htons(ETHERTYPE_IP);
#endif
break;
case ARCTYPE_ARP_OLD:
if (ifp->if_flags & IFF_NOARP) {
/* Discard packet if ARP is disabled on interface */
m_freem(m);
return;
}
m_adj(m, ARC_HDRLEN);
schednetisr(NETISR_ARP);
inq = &arpintrq;
arph = mtod(m, struct arphdr *);
#ifdef ARCNET_ALLOW_BROKEN_ARP
mtod(m, struct arphdr *)->ar_pro = htons(ETHERTYPE_IP);
#endif
break;
#endif
#ifdef INET6
case ARCTYPE_INET6:
m_adj(m, ARC_HDRNEWLEN);
schednetisr(NETISR_IPV6);
inq = &ip6intrq;
break;
#endif
default:
m_freem(m);
return;
}
#if __FreeBSD_version < 500000
s = splimp();
if (IF_QFULL(inq)) {
IF_DROP(inq);
m_freem(m);
} else
IF_ENQUEUE(inq, m);
splx(s);
#else
IF_HANDOFF(inq, m, NULL);
#endif
}
/*
* Convert Arcnet address to printable (loggable) representation.
*/
static char digits[] = "0123456789abcdef";
char *
arc_sprintf(ap)
u_int8_t *ap;
{
static char arcbuf[3];
char *cp = arcbuf;
*cp++ = digits[*ap >> 4];
*cp++ = digits[*ap++ & 0xf];
*cp = 0;
return (arcbuf);
}
/*
* Register (new) link level address.
*/
void
arc_storelladdr(ifp, lla)
struct ifnet *ifp;
u_int8_t lla;
{
*IF_LLADDR(ifp) = lla;
}
/*
* Perform common duties while attaching to interface list
*/
void
arc_ifattach(ifp, lla)
struct ifnet *ifp;
u_int8_t lla;
{
struct ifaddr *ifa;
struct sockaddr_dl *sdl;
struct arccom *ac;
if_attach(ifp);
ifp->if_type = IFT_ARCNET;
ifp->if_addrlen = 1;
ifp->if_hdrlen = ARC_HDRLEN;
ifp->if_mtu = 1500;
if (ifp->if_baudrate == 0)
ifp->if_baudrate = 2500000;
#if __FreeBSD_version < 500000
ifa = ifnet_addrs[ifp->if_index - 1];
#else
ifa = ifaddr_byindex(ifp->if_index);
#endif
KASSERT(ifa != NULL, ("%s: no lladdr!\n", __FUNCTION__));
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
sdl->sdl_type = IFT_ARCNET;
sdl->sdl_alen = ifp->if_addrlen;
if (ifp->if_flags & IFF_BROADCAST)
ifp->if_flags |= IFF_MULTICAST|IFF_ALLMULTI;
ac = (struct arccom *)ifp;
ac->ac_seqid = (time_second) & 0xFFFF; /* try to make seqid unique */
if (lla == 0) {
/* XXX this message isn't entirely clear, to me -- cgd */
log(LOG_ERR,"%s%d: link address 0 reserved for broadcasts. Please change it and ifconfig %s%d down up\n",
ifp->if_name, ifp->if_unit, ifp->if_name, ifp->if_unit);
}
arc_storelladdr(ifp, lla);
ifp->if_broadcastaddr = &arcbroadcastaddr;
bpfattach(ifp, DLT_ARCNET, ARC_HDRLEN);
}
void
arc_ifdetach(ifp)
struct ifnet *ifp;
{
bpfdetach(ifp);
if_detach(ifp);
}
int
arc_ioctl(ifp, command, data)
struct ifnet *ifp;
int command;
caddr_t data;
{
struct ifaddr *ifa = (struct ifaddr *) data;
struct ifreq *ifr = (struct ifreq *) data;
int error = 0;
switch (command) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
ifp->if_init(ifp->if_softc); /* before arpwhohas */
arp_ifinit(ifp, ifa);
break;
#endif
default:
ifp->if_init(ifp->if_softc);
break;
}
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
if (ifr == NULL)
error = EAFNOSUPPORT;
else {
switch (ifr->ifr_addr.sa_family) {
case AF_INET:
case AF_INET6:
error = 0;
break;
default:
error = EAFNOSUPPORT;
break;
}
}
break;
case SIOCSIFMTU:
/*
* Set the interface MTU.
* mtu can't be larger than ARCMTU for RFC1051
* and can't be larger than ARC_PHDS_MTU
*/
if (((ifp->if_flags & IFF_LINK0) && ifr->ifr_mtu > ARCMTU) ||
ifr->ifr_mtu > ARC_PHDS_MAXMTU)
error = EINVAL;
else
ifp->if_mtu = ifr->ifr_mtu;
break;
#if 0
case SIOCGIFADDR:
{
struct sockaddr *sa;
sa = (struct sockaddr *) & ifr->ifr_data;
bcopy(IFP2AC(ifp)->ac_enaddr,
(caddr_t) sa->sa_data, ETHER_ADDR_LEN);
}
break;
#endif
}
return (error);
}