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-rw-r--r--pfinet/linux-src/net/ethernet/Makefile33
-rw-r--r--pfinet/linux-src/net/ethernet/eth.c298
-rw-r--r--pfinet/linux-src/net/ethernet/pe2.c38
-rw-r--r--pfinet/linux-src/net/ethernet/sysctl_net_ether.c13
4 files changed, 382 insertions, 0 deletions
diff --git a/pfinet/linux-src/net/ethernet/Makefile b/pfinet/linux-src/net/ethernet/Makefile
new file mode 100644
index 00000000..193d6af8
--- /dev/null
+++ b/pfinet/linux-src/net/ethernet/Makefile
@@ -0,0 +1,33 @@
+#
+# Makefile for the Linux Ethernet layer.
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definition is now in the main makefile...
+
+O_TARGET := ethernet.o
+
+OBJS := eth.o
+
+ifeq ($(CONFIG_SYSCTL),y)
+OBJS += sysctl_net_ether.o
+endif
+
+ifdef CONFIG_IPX
+OBJ2 := pe2.o
+endif
+
+ifdef CONFIG_ATALK
+OBJ2 := pe2.o
+endif
+
+ifdef CONFIG_NET
+O_OBJS := $(OBJS) $(OBJ2)
+endif
+
+include $(TOPDIR)/Rules.make
+
+tar:
+ tar -cvf /dev/f1 .
diff --git a/pfinet/linux-src/net/ethernet/eth.c b/pfinet/linux-src/net/ethernet/eth.c
new file mode 100644
index 00000000..bce35d48
--- /dev/null
+++ b/pfinet/linux-src/net/ethernet/eth.c
@@ -0,0 +1,298 @@
+/*
+ * INET An implementation of the TCP/IP protocol suite for the LINUX
+ * operating system. INET is implemented using the BSD Socket
+ * interface as the means of communication with the user level.
+ *
+ * Ethernet-type device handling.
+ *
+ * Version: @(#)eth.c 1.0.7 05/25/93
+ *
+ * Authors: Ross Biro, <bir7@leland.Stanford.Edu>
+ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ * Mark Evans, <evansmp@uhura.aston.ac.uk>
+ * Florian La Roche, <rzsfl@rz.uni-sb.de>
+ * Alan Cox, <gw4pts@gw4pts.ampr.org>
+ *
+ * Fixes:
+ * Mr Linux : Arp problems
+ * Alan Cox : Generic queue tidyup (very tiny here)
+ * Alan Cox : eth_header ntohs should be htons
+ * Alan Cox : eth_rebuild_header missing an htons and
+ * minor other things.
+ * Tegge : Arp bug fixes.
+ * Florian : Removed many unnecessary functions, code cleanup
+ * and changes for new arp and skbuff.
+ * Alan Cox : Redid header building to reflect new format.
+ * Alan Cox : ARP only when compiled with CONFIG_INET
+ * Greg Page : 802.2 and SNAP stuff.
+ * Alan Cox : MAC layer pointers/new format.
+ * Paul Gortmaker : eth_copy_and_sum shouldn't csum padding.
+ * Alan Cox : Protect against forwarding explosions with
+ * older network drivers and IFF_ALLMULTI.
+ * Christer Weinigel : Better rebuild header message.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/inet.h>
+#include <linux/ip.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <linux/config.h>
+#include <linux/init.h>
+#include <net/dst.h>
+#include <net/arp.h>
+#include <net/sock.h>
+#include <net/ipv6.h>
+#include <net/ip.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/checksum.h>
+
+
+__initfunc(void eth_setup(char *str, int *ints))
+{
+ struct device *d = dev_base;
+
+ if (!str || !*str)
+ return;
+ while (d)
+ {
+ if (!strcmp(str,d->name))
+ {
+ if (ints[0] > 0)
+ d->irq=ints[1];
+ if (ints[0] > 1)
+ d->base_addr=ints[2];
+ if (ints[0] > 2)
+ d->mem_start=ints[3];
+ if (ints[0] > 3)
+ d->mem_end=ints[4];
+ break;
+ }
+ d=d->next;
+ }
+}
+
+
+/*
+ * Create the Ethernet MAC header for an arbitrary protocol layer
+ *
+ * saddr=NULL means use device source address
+ * daddr=NULL means leave destination address (eg unresolved arp)
+ */
+
+int eth_header(struct sk_buff *skb, struct device *dev, unsigned short type,
+ void *daddr, void *saddr, unsigned len)
+{
+ struct ethhdr *eth = (struct ethhdr *)skb_push(skb,ETH_HLEN);
+
+ /*
+ * Set the protocol type. For a packet of type ETH_P_802_3 we put the length
+ * in here instead. It is up to the 802.2 layer to carry protocol information.
+ */
+
+ if(type!=ETH_P_802_3)
+ eth->h_proto = htons(type);
+ else
+ eth->h_proto = htons(len);
+
+ /*
+ * Set the source hardware address.
+ */
+
+ if(saddr)
+ memcpy(eth->h_source,saddr,dev->addr_len);
+ else
+ memcpy(eth->h_source,dev->dev_addr,dev->addr_len);
+
+ /*
+ * Anyway, the loopback-device should never use this function...
+ */
+
+ if (dev->flags & (IFF_LOOPBACK|IFF_NOARP))
+ {
+ memset(eth->h_dest, 0, dev->addr_len);
+ return(dev->hard_header_len);
+ }
+
+ if(daddr)
+ {
+ memcpy(eth->h_dest,daddr,dev->addr_len);
+ return dev->hard_header_len;
+ }
+
+ return -dev->hard_header_len;
+}
+
+
+/*
+ * Rebuild the Ethernet MAC header. This is called after an ARP
+ * (or in future other address resolution) has completed on this
+ * sk_buff. We now let ARP fill in the other fields.
+ *
+ * This routine CANNOT use cached dst->neigh!
+ * Really, it is used only when dst->neigh is wrong.
+ */
+
+int eth_rebuild_header(struct sk_buff *skb)
+{
+ struct ethhdr *eth = (struct ethhdr *)skb->data;
+ struct device *dev = skb->dev;
+
+ switch (eth->h_proto)
+ {
+#ifdef CONFIG_INET
+ case __constant_htons(ETH_P_IP):
+ return arp_find(eth->h_dest, skb);
+#endif
+ default:
+ printk(KERN_DEBUG
+ "%s: unable to resolve type %X addresses.\n",
+ dev->name, (int)eth->h_proto);
+
+ memcpy(eth->h_source, dev->dev_addr, dev->addr_len);
+ break;
+ }
+
+ return 0;
+}
+
+
+/*
+ * 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.
+ */
+
+unsigned short eth_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.
+ *
+ * Seems, you forgot to remove it. All silly devices
+ * seems to set IFF_PROMISC.
+ */
+
+ else if(dev->flags&(IFF_PROMISC/*|IFF_ALLMULTI*/))
+ {
+ if(memcmp(eth->h_dest,dev->dev_addr, ETH_ALEN))
+ skb->pkt_type=PACKET_OTHERHOST;
+ }
+
+ 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);
+}
+
+int eth_header_parse(struct sk_buff *skb, unsigned char *haddr)
+{
+ struct ethhdr *eth = skb->mac.ethernet;
+ memcpy(haddr, eth->h_source, ETH_ALEN);
+ return ETH_ALEN;
+}
+
+int eth_header_cache(struct neighbour *neigh, struct hh_cache *hh)
+{
+ unsigned short type = hh->hh_type;
+ struct ethhdr *eth = (struct ethhdr*)(((u8*)hh->hh_data) + 2);
+ struct device *dev = neigh->dev;
+
+ if (type == __constant_htons(ETH_P_802_3))
+ return -1;
+
+ eth->h_proto = type;
+ memcpy(eth->h_source, dev->dev_addr, dev->addr_len);
+ memcpy(eth->h_dest, neigh->ha, dev->addr_len);
+ return 0;
+}
+
+/*
+ * Called by Address Resolution module to notify changes in address.
+ */
+
+void eth_header_cache_update(struct hh_cache *hh, struct device *dev, unsigned char * haddr)
+{
+ memcpy(((u8*)hh->hh_data) + 2, haddr, dev->addr_len);
+}
+
+#ifndef CONFIG_IP_ROUTER
+
+/*
+ * Copy from an ethernet device memory space to an sk_buff while checksumming if IP
+ */
+
+void eth_copy_and_sum(struct sk_buff *dest, unsigned char *src, int length, int base)
+{
+ struct ethhdr *eth;
+ struct iphdr *iph;
+ int ip_length;
+
+ eth=(struct ethhdr *)src;
+ if(eth->h_proto!=htons(ETH_P_IP))
+ {
+ memcpy(dest->data,src,length);
+ return;
+ }
+ /*
+ * We have to watch for padded packets. The csum doesn't include the
+ * padding, and there is no point in copying the padding anyway.
+ * We have to use the smaller of length and ip_length because it
+ * can happen that ip_length > length.
+ */
+ memcpy(dest->data,src,sizeof(struct iphdr)+ETH_HLEN); /* ethernet is always >= 34 */
+ length -= sizeof(struct iphdr) + ETH_HLEN;
+ iph=(struct iphdr*)(src+ETH_HLEN);
+ ip_length = ntohs(iph->tot_len) - sizeof(struct iphdr);
+
+ /* Also watch out for bogons - min IP size is 8 (rfc-1042) */
+ if ((ip_length <= length) && (ip_length > 7))
+ length=ip_length;
+
+ dest->csum=csum_partial_copy(src+sizeof(struct iphdr)+ETH_HLEN,dest->data+sizeof(struct iphdr)+ETH_HLEN,length,base);
+ dest->ip_summed=1;
+}
+
+#endif /* !(CONFIG_IP_ROUTER) */
diff --git a/pfinet/linux-src/net/ethernet/pe2.c b/pfinet/linux-src/net/ethernet/pe2.c
new file mode 100644
index 00000000..4915f070
--- /dev/null
+++ b/pfinet/linux-src/net/ethernet/pe2.c
@@ -0,0 +1,38 @@
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <net/datalink.h>
+#include <linux/mm.h>
+#include <linux/in.h>
+
+static void
+pEII_datalink_header(struct datalink_proto *dl,
+ struct sk_buff *skb, unsigned char *dest_node)
+{
+ struct device *dev = skb->dev;
+
+ skb->protocol = htons (ETH_P_IPX);
+ if(dev->hard_header)
+ dev->hard_header(skb, dev, ETH_P_IPX, dest_node, NULL, skb->len);
+}
+
+struct datalink_proto *
+make_EII_client(void)
+{
+ struct datalink_proto *proto;
+
+ proto = (struct datalink_proto *) kmalloc(sizeof(*proto), GFP_ATOMIC);
+ if (proto != NULL) {
+ proto->type_len = 0;
+ proto->header_length = 0;
+ proto->datalink_header = pEII_datalink_header;
+ proto->string_name = "EtherII";
+ }
+
+ return proto;
+}
+
+void destroy_EII_client(struct datalink_proto *dl)
+{
+ if (dl)
+ kfree_s(dl, sizeof(struct datalink_proto));
+}
diff --git a/pfinet/linux-src/net/ethernet/sysctl_net_ether.c b/pfinet/linux-src/net/ethernet/sysctl_net_ether.c
new file mode 100644
index 00000000..b81a6d53
--- /dev/null
+++ b/pfinet/linux-src/net/ethernet/sysctl_net_ether.c
@@ -0,0 +1,13 @@
+/* -*- linux-c -*-
+ * sysctl_net_ether.c: sysctl interface to net Ethernet subsystem.
+ *
+ * Begun April 1, 1996, Mike Shaver.
+ * Added /proc/sys/net/ether directory entry (empty =) ). [MS]
+ */
+
+#include <linux/mm.h>
+#include <linux/sysctl.h>
+
+ctl_table ether_table[] = {
+ {0}
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 15:38:13 +0000