patch-2.1.109 linux/net/802/p8022tr.c

• Lines: 144
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.108/linux/net/802/p8022tr.c
• Orig date: Mon Feb 23 18:12:12 1998

diff -u --recursive --new-file v2.1.108/linux/net/802/p8022tr.c linux/net/802/p8022tr.c
@@ -1,143 +0,0 @@
-/*
- * NET3:	Handling for token ring frames that are not IP. IP is hooked
- *		early in the token ring support code.
- *
- *		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/module.h>
-#include <linux/netdevice.h>
-#include <linux/skbuff.h>
-#include <net/datalink.h>
-#include <linux/mm.h>
-#include <linux/in.h>
-#include <linux/init.h>
-#include <net/p8022tr.h>
-
-#define SNAP_HEADER_LEN	8
-
-static struct datalink_proto *p8022tr_list = NULL;
-
-/*
- *	We don't handle the loopback SAP stuff, the extended
- *	802.2 command set, multicast SAP identifiers and non UI
- *	frames. We have the absolute minimum needed for IPX,
- *	IP and Appletalk phase 2. See the llc_* routines for support
- *	to handle the fun stuff.
- *
- *	We assume the list will be very short (at the moment its normally
- *	one or two entries).
- */
-
-static struct datalink_proto *find_8022tr_client(unsigned char type)
-{
-	struct datalink_proto	*proto;
-
-	for (proto = p8022tr_list;
-		((proto != NULL) && (*(proto->type) != type));
-		proto = proto->next)
-		;
-
-	return proto;
-}
-
-int p8022tr_rcv(struct sk_buff *skb, struct device *dev, struct packet_type *pt)
-{
-	struct datalink_proto	*proto;
-
-	proto = find_8022tr_client(*(skb->h.raw));
-	if (proto != NULL) {
-		skb->h.raw += 3;
-		skb_pull(skb,3);
-		return proto->rcvfunc(skb, dev, pt);
-	}
-
-	skb->sk = NULL;
-	kfree_skb(skb);
-	return 0;
-}
-
-static void p8022tr_datalink_header(struct datalink_proto *dl,
-		struct sk_buff *skb, unsigned char *dest_node)
-{
-	struct device	*dev = skb->dev;
-	unsigned char	*rawp;
-	unsigned char	*olddata;
-	unsigned char	*newdata;
-
-	rawp = skb_push(skb,3);
-	*rawp++ = dl->type[0];
-	*rawp++ = dl->type[0];
-	*rawp = 0x03;	/* UI */
-	dev->hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len);
-	olddata = skb->data;
-	newdata = skb_pull(skb, SNAP_HEADER_LEN);
-	memmove(newdata, olddata, dev->hard_header_len - SNAP_HEADER_LEN);
-}
-
-static struct packet_type p8022tr_packet_type =
-{
-	0,
-	NULL,		/* All devices */
-	p8022tr_rcv,
-	NULL,
-	NULL,
-};
-
-
-EXPORT_SYMBOL(register_8022tr_client);
-EXPORT_SYMBOL(unregister_8022tr_client);
-
-__initfunc(void p8022tr_proto_init(struct net_proto *pro))
-{
-	p8022tr_packet_type.type=htons(ETH_P_TR_802_2);
-	dev_add_pack(&p8022tr_packet_type);
-}
-
-struct datalink_proto *register_8022tr_client(unsigned char type, 
-	int (*rcvfunc)(struct sk_buff *, struct device *, struct packet_type *))
-{
-	struct datalink_proto	*proto;
-
-	if (find_8022tr_client(type) != NULL)
-		return NULL;
-
-	proto = (struct datalink_proto *) kmalloc(sizeof(*proto), GFP_ATOMIC);
-	if (proto != NULL) {
-		proto->type[0] = type;
-		proto->type_len = 1;
-		proto->rcvfunc = rcvfunc;
-		proto->header_length = 3;
-		proto->datalink_header = p8022tr_datalink_header;
-		proto->string_name = "802.2TR";
-		proto->next = p8022tr_list;
-		p8022tr_list = proto;
-	}
-
-	return proto;
-}
-
-void unregister_8022tr_client(unsigned char type)
-{
-	struct datalink_proto *tmp, **clients = &p8022tr_list;
-	unsigned long flags;
-
-	save_flags(flags);
-	cli();
-
-	while ((tmp = *clients) != NULL)
-	{
-		if (tmp->type[0] == type) {
-			*clients = tmp->next;
-			kfree_s(tmp, sizeof(struct datalink_proto));
-			break;
-		} else {
-			clients = &tmp->next;
-		}
-	}
-
-	restore_flags(flags);
-}