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Add IP multicast support as per RFC 1122 section 3.3.7 to ARCnet. 

"The mapping of IP Class D addresses to local addresses is
         currently specified for the following types of networks:
	 [...]
         o    Any network that supports broadcast but not multicast,
              addressing: all IP Class D addresses map to the local
              broadcast address."
This commit is contained in:
is 1996-09-02 17:28:22 +00:00
parent 42f3427158
commit 905db38340
2 changed files with 17 additions and 6 deletions
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12
sys/arch/amiga/dev/if_bah.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_bah.c,v 1.18 1996/05/07 00:46:39 thorpej Exp $ */
/* $NetBSD: if_bah.c,v 1.19 1996/09/02 17:28:22 is Exp $ */
/*
* Copyright (c) 1994, 1995 Ignatios Souvatzis
@ -1146,11 +1146,13 @@ bah_ioctl(ifp, command, data)
{
struct bah_softc *sc;
register struct ifaddr *ifa;
struct ifreq *ifr;
int s, error;
error = 0;
sc = ifp->if_softc;
ifa = (struct ifaddr *)data;
ifr = (struct ifreq *)data;
s = splnet();
#if defined(BAH_DEBUG) && (BAH_DEBUG > 2)
@ -1191,7 +1193,13 @@ bah_ioctl(ifp, command, data)
}
break;
/* Multicast not supported */
case SIOCSIFMULTI:
case SIOCDIFMULTI:
if (ifr->ifr_addr.sa_family == AF_INET)
error = 0;
else
error = EAFNOSUPPORT;
break;
default:
error = EINVAL;

11
sys/net/if_arcsubr.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_arcsubr.c,v 1.8 1996/05/07 02:40:29 thorpej Exp $ */
/* $NetBSD: if_arcsubr.c,v 1.9 1996/09/02 17:28:25 is Exp $ */
/*
* Copyright (c) 1994, 1995 Ignatios Souvatzis
@ -143,13 +143,14 @@ arc_output(ifp, m0, dst, rt0)
/*
* For now, use the simple IP addr -> ARCnet addr mapping
*/
if (m->m_flags & M_BCAST)
if (m->m_flags & (M_BCAST|M_MCAST))
adst = arcbroadcastaddr; /* ARCnet broadcast address */
else
adst = ntohl(SIN(dst)->sin_addr.s_addr) & 0xFF;
/* If broadcasting on a simplex interface, loopback a copy */
if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
if ((m->m_flags & (M_BCAST|M_MCAST)) &&
(ifp->if_flags & IFF_SIMPLEX))
mcopy = m_copy(m, 0, (int)M_COPYALL);
if (ifp->if_flags & IFF_LINK0) {
atype = ARCTYPE_IP;
@ -486,7 +487,7 @@ arc_input(ifp, m)
ifp->if_ibytes += m->m_pkthdr.len;
if (arcbroadcastaddr == ah->arc_dhost) {
m->m_flags |= M_BCAST;
m->m_flags |= M_BCAST|M_MCAST;
ifp->if_imcasts++;
}
@ -550,6 +551,8 @@ arc_ifattach(ifp)
ifp->if_type = IFT_ARCNET;
ifp->if_addrlen = 1;
ifp->if_hdrlen = ARC_HDRLEN;
if (ifp->if_flags & IFF_BROADCAST)
ifp->if_flags |= IFF_MULTICAST|IFF_ALLMULTI;
if (ifp->if_flags & IFF_LINK0 && arc_phdsmtu > 60480)
log(LOG_ERR,
"%s: arc_phdsmtu is %d, but must not exceed 60480",