Date: Mon, 28 Jul 1997 14:27:08 +0200 (SAT) From: John Hay <jhay@mikom.csir.co.za> To: dennis@etinc.com (dennis) Cc: danny@panda.hilink.com.au, isp@FreeBSD.ORG Subject: Re: FreeBSD + IPX Message-ID: <199707281227.OAA06782@zibbi.mikom.csir.co.za> In-Reply-To: <3.0.32.19970724104816.00b5315c@etinc.com> from dennis at "Jul 24, 97 10:48:19 am"
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>
> Why not just support 802.3. Its not that difficult for pete's sake. If someone
> asked me to change my entire network to suit a product with such a basic
> defect I would be very suspicious of the reliability (and support) of the
> feature.
> if you can't make something as trivial as 802.3 work then there are lots
> of more
> complicated things that probably wont work as well.
It isn't difficult to do if you just do either Ethernet_II or 802.3 on
all interfaces. Here is some code for that. Just set sysctl net.link.ether.
ipx.framing8023 to 1 to switch from Ethernet_II framing to 802.3 on ALL
interfaces.
The reason I don't commit this is that I would rather have a way to
support more than one framing per interface or otherwise have it at
least settable per interface. I have code to set it per interface,
but it use the link1 flag, so it only works on cards that don't use
that flag.
O, this patch is against 2.2-STABLE.
John
--
John Hay -- John.Hay@mikom.csir.co.za
--- if_ethersubr.c.v2.2.org Wed Jul 2 07:56:33 1997
+++ if_ethersubr.c Sun Jul 27 10:18:58 1997
@@ -101,6 +101,11 @@
extern u_char aarp_org_code[ 3 ];
#endif NETATALK
+SYSCTL_NODE(_net_link_ether, PF_IPX, ipx, CTLFLAG_RW, 0, "");
+static int ipx8023; /* Should we do Ethernet_II framing for IPX? */
+SYSCTL_INT(_net_link_ether_ipx, OID_AUTO, framing8023, CTLFLAG_RW,
+ &ipx8023, 0, "");
+
u_char etherbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
#define senderr(e) { error = (e); goto bad;}
@@ -177,7 +182,10 @@
{
struct ifaddr *ia;
- type = htons(ETHERTYPE_IPX);
+ if (ipx8023)
+ type = htons(m->m_pkthdr.len);
+ else
+ type = htons(ETHERTYPE_IPX);
bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
(caddr_t)edst, sizeof (edst));
for (ia = ifp->if_addrlist; ia != NULL; ia = ia->ifa_next)
@@ -467,8 +475,13 @@
#endif
#ifdef IPX
case ETHERTYPE_IPX:
- schednetisr(NETISR_IPX);
- inq = &ipxintrq;
+ if (ipx8023 == 0) {
+ schednetisr(NETISR_IPX);
+ inq = &ipxintrq;
+ } else {
+ m_freem(m);
+ return;
+ }
break;
#endif
#ifdef NS
@@ -489,6 +502,18 @@
return;
#endif NETATALK
default:
+#ifdef IPX
+ {
+ struct ipx *ipxp = mtod(m, struct ipx *);
+
+ if (ipx8023 && (ipxp->ipx_sum == 0xffff) &&
+ (ntohs(ipxp->ipx_len) <= m->m_pkthdr.len)) {
+ schednetisr(NETISR_IPX);
+ inq = &ipxintrq;
+ break;
+ }
+ }
+#endif
#ifdef NS
checksum = mtod(m, ushort *);
/* Novell 802.3 */
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