On Wed, 13 Sep 2000 16:11:13 -0400, you wrote:
>2) Could not use plip anymore
plip has been broken for sometime in the 2.2.x kernels.
It was fixed in the 2.2.15 range.
So that either you upgrade to the latest 6.2 kernel from updates
(2.2.16-3) which should be ok, or apply this patch to you curent kernel
and recompile.
=====
diff -u --new-file --recursive --exclude-from /usr/src/exclude
linux.vanilla/drivers/net/plip.c linux.15p10/drivers/net/plip.c
--- linux.vanilla/drivers/net/plip.c Tue Feb 22 01:29:06 2000
+++ linux.15p10/drivers/net/plip.c Tue Feb 22 01:24:31 2000
@@ -507,6 +507,61 @@
return OK;
}
+/*
+ * Determine the packet's protocol ID. The rule here is that we
+ * assume 802.3 if the type field is short enough to be a length.
+ * This is normal practice and works for any 'now in use' protocol.
+ *
+ * PLIP is ethernet ish but the daddr might not be valid if unicast.
+ * PLIP fortunately has no bus architecture (its Point-to-point).
+ *
+ * We can't fix the daddr thing as that quirk (more bug) is embedded
+ * in far too many old systems not all even running Linux.
+ */
+
+static unsigned short plip_type_trans(struct sk_buff *skb, struct
device *dev)
+{
+ struct ethhdr *eth;
+ unsigned char *rawp;
+
+ skb->mac.raw=skb->data;
+ skb_pull(skb,dev->hard_header_len);
+ eth= skb->mac.ethernet;
+
+ if(*eth->h_dest&1)
+ {
+ if(memcmp(eth->h_dest,dev->broadcast, ETH_ALEN)==0)
+ skb->pkt_type=PACKET_BROADCAST;
+ else
+ skb->pkt_type=PACKET_MULTICAST;
+ }
+
+ /*
+ * This ALLMULTI check should be redundant by 1.4
+ * so don't forget to remove it.
+ */
+
+ if (ntohs(eth->h_proto) >= 1536)
+ return eth->h_proto;
+
+ rawp = skb->data;
+
+ /*
+ * This is a magic hack to spot IPX packets. Older Novell breaks
+ * the protocol design and runs IPX over 802.3 without an 802.2 LLC
+ * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
+ * won't work for fault tolerant netware but does for the rest.
+ */
+ if (*(unsigned short *)rawp == 0xFFFF)
+ return htons(ETH_P_802_3);
+
+ /*
+ * Real 802.2 LLC
+ */
+ return htons(ETH_P_802_2);
+}
+
+
/* PLIP_RECEIVE_PACKET --- receive a packet */
static int
plip_receive_packet(struct device *dev, struct net_local *nl,
@@ -595,7 +650,7 @@
case PLIP_PK_DONE:
/* Inform the upper layer for the arrival of a packet. */
- rcv->skb->protocol=eth_type_trans(rcv->skb, dev);
+ rcv->skb->protocol=plip_type_trans(rcv->skb, dev);
netif_rx(rcv->skb);
nl->enet_stats.rx_bytes += rcv->length.h;
nl->enet_stats.rx_packets++;
=====
--
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