patch-2.4.21 linux-2.4.21/drivers/net/wan/hdlc.c

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diff -urN linux-2.4.20/drivers/net/wan/hdlc.c linux-2.4.21/drivers/net/wan/hdlc.c
@@ -1,1453 +0,0 @@
-/*
- * Generic HDLC support routines for Linux
- *
- * Copyright (C) 1999, 2000 Krzysztof Halasa <khc@pm.waw.pl>
- *
- * 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.
- *
- * Current status:
- *    - this is work in progress
- *    - not heavily tested on SMP
- *    - currently supported:
- *	* raw IP-in-HDLC
- *	* Cisco HDLC
- *	* Frame Relay with ANSI or CCITT LMI (both user and network side)
- *	* PPP (using syncppp.c)
- *	* X.25
- *
- * Use sethdlc utility to set line parameters, protocol and PVCs
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/poll.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/if_arp.h>
-#include <linux/init.h>
-#include <linux/skbuff.h>
-#include <linux/pkt_sched.h>
-#include <linux/inetdevice.h>
-#include <linux/lapb.h>
-#include <linux/rtnetlink.h>
-#include <linux/hdlc.h>
-
-/* #define DEBUG_PKT */
-/* #define DEBUG_HARD_HEADER */
-/* #define DEBUG_FECN */
-/* #define DEBUG_BECN */
-
-static const char* version = "HDLC support module revision 1.02 for Linux 2.4";
-
-
-#define CISCO_MULTICAST		0x8F	/* Cisco multicast address */
-#define CISCO_UNICAST		0x0F	/* Cisco unicast address */
-#define CISCO_KEEPALIVE		0x8035	/* Cisco keepalive protocol */
-#define CISCO_SYS_INFO		0x2000	/* Cisco interface/system info */
-#define CISCO_ADDR_REQ		0	/* Cisco address request */
-#define CISCO_ADDR_REPLY	1	/* Cisco address reply */
-#define CISCO_KEEPALIVE_REQ	2	/* Cisco keepalive request */
-
-static int hdlc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
-
-/********************************************************
- *
- * Cisco HDLC support
- *
- *******************************************************/
-
-static int cisco_hard_header(struct sk_buff *skb, struct net_device *dev,
-			     u16 type, void *daddr, void *saddr,
-			     unsigned int len)
-{
-	hdlc_header *data;
-#ifdef DEBUG_HARD_HEADER
-	printk(KERN_DEBUG "%s: cisco_hard_header called\n", dev->name);
-#endif
-
-	skb_push(skb, sizeof(hdlc_header));
-	data = (hdlc_header*)skb->data;
-	if (type == CISCO_KEEPALIVE)
-		data->address = CISCO_MULTICAST;
-	else
-		data->address = CISCO_UNICAST;
-	data->control = 0;
-	data->protocol = htons(type);
-
-	return sizeof(hdlc_header);
-}
-
-
-
-static void cisco_keepalive_send(hdlc_device *hdlc, u32 type,
-				 u32 par1, u32 par2)
-{
-	struct sk_buff *skb;
-	cisco_packet *data;
-
-	skb = dev_alloc_skb(sizeof(hdlc_header)+sizeof(cisco_packet));
-	if (!skb) {
-		printk(KERN_WARNING "%s: Memory squeeze on cisco_keepalive_send()\n",
-			       hdlc_to_name(hdlc));
-		return;
-	}
-	skb_reserve(skb, 4);
-	cisco_hard_header(skb, hdlc_to_dev(hdlc), CISCO_KEEPALIVE,
-			  NULL, NULL, 0);
-	data = (cisco_packet*)skb->tail;
-
-	data->type = htonl(type);
-	data->par1 = htonl(par1);
-	data->par2 = htonl(par2);
-	data->rel = 0xFFFF;
-	data->time = htonl(jiffies * 1000 / HZ);
-
-	skb_put(skb, sizeof(cisco_packet));
-	skb->priority = TC_PRIO_CONTROL;
-	skb->dev = hdlc_to_dev(hdlc);
-
-	dev_queue_xmit(skb);
-}
-
-
-
-static void cisco_netif(hdlc_device *hdlc, struct sk_buff *skb)
-{
-	hdlc_header *data = (hdlc_header*)skb->data;
-	cisco_packet *cisco_data;
-	struct in_device *in_dev;
-	u32 addr, mask;
-
-	if (skb->len<sizeof(hdlc_header))
-		goto rx_error;
-
-	if (data->address != CISCO_MULTICAST &&
-	    data->address != CISCO_UNICAST)
-		goto rx_error;
-
-	skb_pull(skb, sizeof(hdlc_header));
-
-	switch(ntohs(data->protocol)) {
-	case ETH_P_IP:
-	case ETH_P_IPX:
-	case ETH_P_IPV6:
-		skb->protocol = data->protocol;
-		skb->dev = hdlc_to_dev(hdlc);
-		netif_rx(skb);
-		return;
-
-	case CISCO_SYS_INFO:
-		/* Packet is not needed, drop it. */
-		dev_kfree_skb_any(skb);
-		return;
-
-	case CISCO_KEEPALIVE:
-		if (skb->len != CISCO_PACKET_LEN &&
-		    skb->len != CISCO_BIG_PACKET_LEN) {
-			printk(KERN_INFO "%s: Invalid length of Cisco "
-			       "control packet (%d bytes)\n",
-			       hdlc_to_name(hdlc), skb->len);
-			goto rx_error;
-		}
-
-		cisco_data = (cisco_packet*)skb->data;
-
-		switch(ntohl (cisco_data->type)) {
-		case CISCO_ADDR_REQ: /* Stolen from syncppp.c :-) */
-			in_dev = hdlc_to_dev(hdlc)->ip_ptr;
-			addr = 0;
-			mask = ~0; /* is the mask correct? */
-
-			if (in_dev != NULL) {
-				struct in_ifaddr **ifap = &in_dev->ifa_list;
-
-				while (*ifap != NULL) {
-					if (strcmp(hdlc_to_name(hdlc),
-						   (*ifap)->ifa_label) == 0) {
-						addr = (*ifap)->ifa_local;
-						mask = (*ifap)->ifa_mask;
-						break;
-					}
-					ifap = &(*ifap)->ifa_next;
-				}
-
-				cisco_keepalive_send(hdlc, CISCO_ADDR_REPLY,
-						     addr, mask);
-			}
-			dev_kfree_skb_any(skb);
-			return;
-
-		case CISCO_ADDR_REPLY:
-			printk(KERN_INFO "%s: Unexpected Cisco IP address "
-			       "reply\n", hdlc_to_name(hdlc));
-			goto rx_error;
-
-		case CISCO_KEEPALIVE_REQ:
-			hdlc->lmi.rxseq = ntohl(cisco_data->par1);
-			if (ntohl(cisco_data->par2) == hdlc->lmi.txseq) {
-				hdlc->lmi.last_poll = jiffies;
-				if (!(hdlc->lmi.state & LINK_STATE_RELIABLE)) {
-					u32 sec, min, hrs, days;
-					sec = ntohl(cisco_data->time) / 1000;
-					min = sec / 60; sec -= min * 60;
-					hrs = min / 60; min -= hrs * 60;
-					days = hrs / 24; hrs -= days * 24;
-					printk(KERN_INFO "%s: Link up (peer "
-					       "uptime %ud%uh%um%us)\n",
-					       hdlc_to_name(hdlc), days, hrs,
-					       min, sec);
-				}
-				hdlc->lmi.state |= LINK_STATE_RELIABLE;
-			}
-
-			dev_kfree_skb_any(skb);
-			return;
-		} /* switch(keepalive type) */
-	} /* switch(protocol) */
-
-	printk(KERN_INFO "%s: Unsupported protocol %x\n", hdlc_to_name(hdlc),
-	       data->protocol);
-	dev_kfree_skb_any(skb);
-	return;
-
- rx_error:
-	hdlc->stats.rx_errors++; /* Mark error */
-	dev_kfree_skb_any(skb);
-}
-
-
-
-static void cisco_timer(unsigned long arg)
-{
-	hdlc_device *hdlc = (hdlc_device*)arg;
-
-	if ((hdlc->lmi.state & LINK_STATE_RELIABLE) &&
-	    (jiffies - hdlc->lmi.last_poll >= hdlc->lmi.T392 * HZ)) {
-		hdlc->lmi.state &= ~LINK_STATE_RELIABLE;
-		printk(KERN_INFO "%s: Link down\n", hdlc_to_name(hdlc));
-	}
-
-	cisco_keepalive_send(hdlc, CISCO_KEEPALIVE_REQ, ++hdlc->lmi.txseq,
-			     hdlc->lmi.rxseq);
-	hdlc->timer.expires = jiffies + hdlc->lmi.T391*HZ;
-
-	hdlc->timer.function = cisco_timer;
-	hdlc->timer.data = arg;
-	add_timer(&hdlc->timer);
-}
-
-
-
-/******************************************************************
- *
- *     generic Frame Relay routines
- *
- *****************************************************************/
-
-
-static int fr_hard_header(struct sk_buff *skb, struct net_device *dev,
-			  u16 type, void *daddr, void *saddr, unsigned int len)
-{
-	u16 head_len;
-
-	if (!daddr)
-		daddr = dev->broadcast;
-
-#ifdef DEBUG_HARD_HEADER
-	printk(KERN_DEBUG "%s: fr_hard_header called\n", dev->name);
-#endif
-
-	switch(type) {
-	case ETH_P_IP:
-		head_len = 4;
-		skb_push(skb, head_len);
-		skb->data[3] = NLPID_IP;
-		break;
-
-	case ETH_P_IPV6:
-		head_len = 4;
-		skb_push(skb, head_len);
-		skb->data[3] = NLPID_IPV6;
-		break;
-
-	case LMI_PROTO:
-		head_len = 4;
-		skb_push(skb, head_len);
-		skb->data[3] = LMI_PROTO;
-		break;
-
-	default:
-		head_len = 10;
-		skb_push(skb, head_len);
-		skb->data[3] = FR_PAD;
-		skb->data[4] = NLPID_SNAP;
-		skb->data[5] = FR_PAD;
-		skb->data[6] = FR_PAD;
-		skb->data[7] = FR_PAD;
-		skb->data[8] = type>>8;
-		skb->data[9] = (u8)type;
-	}
-
-	memcpy(skb->data, daddr, 2);
-	skb->data[2] = FR_UI;
-
-	return head_len;
-}
-
-
-
-static inline void fr_log_dlci_active(pvc_device *pvc)
-{
-	printk(KERN_INFO "%s: %sactive%s\n", pvc_to_name(pvc),
-	       pvc->state & PVC_STATE_ACTIVE ? "" : "in",
-	       pvc->state & PVC_STATE_NEW ? " new" : "");
-}
-
-
-
-static inline u8 fr_lmi_nextseq(u8 x)
-{
-	x++;
-	return x ? x : 1;
-}
-
-
-
-static void fr_lmi_send(hdlc_device *hdlc, int fullrep)
-{
-	struct sk_buff *skb;
-	pvc_device *pvc = hdlc->first_pvc;
-	int len = mode_is(hdlc, MODE_FR_ANSI) ? LMI_ANSI_LENGTH : LMI_LENGTH;
-	int stat_len = 3;
-	u8 *data;
-	int i = 0;
-
-	if (mode_is(hdlc, MODE_DCE) && fullrep) {
-		len += hdlc->pvc_count * (2 + stat_len);
-		if (len > HDLC_MAX_MTU) {
-			printk(KERN_WARNING "%s: Too many PVCs while sending "
-			       "LMI full report\n", hdlc_to_name(hdlc));
-			return;
-		}
-	}
-
-	skb = dev_alloc_skb(len);
-	if (!skb) {
-		printk(KERN_WARNING "%s: Memory squeeze on fr_lmi_send()\n",
-			       hdlc_to_name(hdlc));
-		return;
-	}
-	memset(skb->data, 0, len);
-	skb_reserve(skb, 4);
-	fr_hard_header(skb, hdlc_to_dev(hdlc), LMI_PROTO, NULL, NULL, 0);
-	data = skb->tail;
-	data[i++] = LMI_CALLREF;
-	data[i++] = mode_is(hdlc, MODE_DCE) ? LMI_STATUS : LMI_STATUS_ENQUIRY;
-	if (mode_is(hdlc, MODE_FR_ANSI))
-		data[i++] = LMI_ANSI_LOCKSHIFT;
-	data[i++] = mode_is(hdlc, MODE_FR_CCITT) ? LMI_CCITT_REPTYPE :
-		LMI_REPTYPE;
-	data[i++] = LMI_REPT_LEN;
-	data[i++] = fullrep ? LMI_FULLREP : LMI_INTEGRITY;
-
-	data[i++] = mode_is(hdlc, MODE_FR_CCITT) ? LMI_CCITT_ALIVE : LMI_ALIVE;
-	data[i++] = LMI_INTEG_LEN;
-	data[i++] = hdlc->lmi.txseq = fr_lmi_nextseq(hdlc->lmi.txseq);
-	data[i++] = hdlc->lmi.rxseq;
-
-	if (mode_is(hdlc, MODE_DCE) && fullrep) {
-		while (pvc) {
-			data[i++] = mode_is(hdlc, MODE_FR_CCITT) ?
-				LMI_CCITT_PVCSTAT:LMI_PVCSTAT;
-			data[i++] = stat_len;
-
-			if ((hdlc->lmi.state & LINK_STATE_RELIABLE) &&
-			    (pvc->netdev.flags & IFF_UP) &&
-			    !(pvc->state & (PVC_STATE_ACTIVE|PVC_STATE_NEW))) {
-				pvc->state |= PVC_STATE_NEW;
-				fr_log_dlci_active(pvc);
-			}
-
-			dlci_to_status(hdlc, netdev_dlci(&pvc->netdev),
-				       data+i, pvc->state);
-			i += stat_len;
-			pvc = pvc->next;
-		}
-	}
-
-	skb_put(skb, i);
-	skb->priority = TC_PRIO_CONTROL;
-	skb->dev = hdlc_to_dev(hdlc);
-
-	dev_queue_xmit(skb);
-}
-
-
-
-static void fr_timer(unsigned long arg)
-{
-	hdlc_device *hdlc = (hdlc_device*)arg;
-	int i, cnt = 0, reliable;
-	u32 list;
-
-	if (mode_is(hdlc, MODE_DCE))
-		reliable = (jiffies - hdlc->lmi.last_poll < hdlc->lmi.T392*HZ);
-	else {
-		hdlc->lmi.last_errors <<= 1; /* Shift the list */
-		if (hdlc->lmi.state & LINK_STATE_REQUEST) {
-			printk(KERN_INFO "%s: No LMI status reply received\n",
-			       hdlc_to_name(hdlc));
-			hdlc->lmi.last_errors |= 1;
-		}
-
-		for (i = 0, list = hdlc->lmi.last_errors; i < hdlc->lmi.N393;
-		     i++, list >>= 1)
-			cnt += (list & 1);	/* errors count */
-
-		reliable = (cnt < hdlc->lmi.N392);
-	}
-
-	if ((hdlc->lmi.state & LINK_STATE_RELIABLE) !=
-	    (reliable ? LINK_STATE_RELIABLE : 0)) {
-		pvc_device *pvc = hdlc->first_pvc;
-
-		while (pvc) {/* Deactivate all PVCs */
-			pvc->state &= ~(PVC_STATE_NEW | PVC_STATE_ACTIVE);
-			pvc = pvc->next;
-		}
-
-		hdlc->lmi.state ^= LINK_STATE_RELIABLE;
-		printk(KERN_INFO "%s: Link %sreliable\n", hdlc_to_name(hdlc),
-		       reliable ? "" : "un");
-
-		if (reliable) {
-			hdlc->lmi.N391cnt = 0; /* Request full status */
-			hdlc->lmi.state |= LINK_STATE_CHANGED;
-		}
-	}
-
-	if (mode_is(hdlc, MODE_DCE))
-		hdlc->timer.expires = jiffies + hdlc->lmi.T392*HZ;
-	else {
-		if (hdlc->lmi.N391cnt)
-			hdlc->lmi.N391cnt--;
-
-		fr_lmi_send(hdlc, hdlc->lmi.N391cnt == 0);
-
-		hdlc->lmi.state |= LINK_STATE_REQUEST;
-		hdlc->timer.expires = jiffies + hdlc->lmi.T391*HZ;
-	}
-
-	hdlc->timer.function = fr_timer;
-	hdlc->timer.data = arg;
-	add_timer(&hdlc->timer);
-}
-
-
-
-static int fr_lmi_recv(hdlc_device *hdlc, struct sk_buff *skb)
-{
-	int stat_len;
-	pvc_device *pvc;
-	int reptype = -1, error;
-	u8 rxseq, txseq;
-	int i;
-
-	if (skb->len < (mode_is(hdlc, MODE_FR_ANSI) ?
-			LMI_ANSI_LENGTH : LMI_LENGTH)) {
-		printk(KERN_INFO "%s: Short LMI frame\n", hdlc_to_name(hdlc));
-		return 1;
-	}
-
-	if (skb->data[5] != (!mode_is(hdlc, MODE_DCE) ?
-			     LMI_STATUS : LMI_STATUS_ENQUIRY)) {
-		printk(KERN_INFO "%s: LMI msgtype=%x, Not LMI status %s\n",
-		       hdlc_to_name(hdlc), skb->data[2],
-		       mode_is(hdlc, MODE_DCE) ? "enquiry" : "reply");
-		return 1;
-	}
-
-	i = mode_is(hdlc, MODE_FR_ANSI) ? 7 : 6;
-
-	if (skb->data[i] !=
-	    (mode_is(hdlc, MODE_FR_CCITT) ? LMI_CCITT_REPTYPE : LMI_REPTYPE)) {
-		printk(KERN_INFO "%s: Not a report type=%x\n",
-		       hdlc_to_name(hdlc), skb->data[i]);
-		return 1;
-	}
-	i++;
-
-	i++;				/* Skip length field */
-
-	reptype = skb->data[i++];
-
-	if (skb->data[i]!=
-	    (mode_is(hdlc, MODE_FR_CCITT) ? LMI_CCITT_ALIVE : LMI_ALIVE)) {
-		printk(KERN_INFO "%s: Unsupported status element=%x\n",
-		       hdlc_to_name(hdlc), skb->data[i]);
-		return 1;
-	}
-	i++;
-
-	i++;			/* Skip length field */
-
-	hdlc->lmi.rxseq = skb->data[i++]; /* TX sequence from peer */
-	rxseq = skb->data[i++];	/* Should confirm our sequence */
-
-	txseq = hdlc->lmi.txseq;
-
-	if (mode_is(hdlc, MODE_DCE)) {
-		if (reptype != LMI_FULLREP && reptype != LMI_INTEGRITY) {
-			printk(KERN_INFO "%s: Unsupported report type=%x\n",
-			       hdlc_to_name(hdlc), reptype);
-			return 1;
-		}
-	}
-
-	error = 0;
-	if (!(hdlc->lmi.state & LINK_STATE_RELIABLE))
-		error = 1;
-
-	if (rxseq == 0 || rxseq != txseq) {
-		hdlc->lmi.N391cnt = 0; /* Ask for full report next time */
-		error = 1;
-	}
-
-	if (mode_is(hdlc, MODE_DCE)) {
-		if ((hdlc->lmi.state & LINK_STATE_FULLREP_SENT) && !error) {
-/* Stop sending full report - the last one has been confirmed by DTE */
-			hdlc->lmi.state &= ~LINK_STATE_FULLREP_SENT;
-			pvc = hdlc->first_pvc;
-			while (pvc) {
-				if (pvc->state & PVC_STATE_NEW) {
-					pvc->state &= ~PVC_STATE_NEW;
-					pvc->state |= PVC_STATE_ACTIVE;
-					fr_log_dlci_active(pvc);
-
-/* Tell DTE that new PVC is now active */
-					hdlc->lmi.state |= LINK_STATE_CHANGED;
-				}
-				pvc = pvc->next;
-			}
-		}
-
-		if (hdlc->lmi.state & LINK_STATE_CHANGED) {
-			reptype = LMI_FULLREP;
-			hdlc->lmi.state |= LINK_STATE_FULLREP_SENT;
-			hdlc->lmi.state &= ~LINK_STATE_CHANGED;
-		}
-
-		fr_lmi_send(hdlc, reptype == LMI_FULLREP ? 1 : 0);
-		return 0;
-	}
-
-	/* DTE */
-
-	if (reptype != LMI_FULLREP || error)
-		return 0;
-
-	stat_len = 3;
-	pvc = hdlc->first_pvc;
-
-	while (pvc) {
-		pvc->newstate = 0;
-		pvc = pvc->next;
-	}
-
-	while (skb->len >= i + 2 + stat_len) {
-		u16 dlci;
-		u8 state = 0;
-
-		if (skb->data[i] != (mode_is(hdlc, MODE_FR_CCITT) ?
-				     LMI_CCITT_PVCSTAT : LMI_PVCSTAT)) {
-			printk(KERN_WARNING "%s: Invalid PVCSTAT ID: %x\n",
-			       hdlc_to_name(hdlc), skb->data[i]);
-			return 1;
-		}
-		i++;
-
-		if (skb->data[i] != stat_len) {
-			printk(KERN_WARNING "%s: Invalid PVCSTAT length: %x\n",
-			       hdlc_to_name(hdlc), skb->data[i]);
-			return 1;
-		}
-		i++;
-
-		dlci = status_to_dlci(hdlc, skb->data+i, &state);
-		pvc = find_pvc(hdlc, dlci);
-
-		if (pvc)
-			pvc->newstate = state;
-		else if (state == PVC_STATE_NEW)
-			printk(KERN_INFO "%s: new PVC available, DLCI=%u\n",
-			       hdlc_to_name(hdlc), dlci);
-
-		i += stat_len;
-	}
-
-	pvc = hdlc->first_pvc;
-
-	while (pvc) {
-		if (pvc->newstate == PVC_STATE_NEW)
-			pvc->newstate = PVC_STATE_ACTIVE;
-
-		pvc->newstate |= (pvc->state &
-				  ~(PVC_STATE_NEW|PVC_STATE_ACTIVE));
-		if (pvc->state != pvc->newstate) {
-			pvc->state = pvc->newstate;
-			fr_log_dlci_active(pvc);
-		}
-		pvc = pvc->next;
-	}
-
-	/* Next full report after N391 polls */
-	hdlc->lmi.N391cnt = hdlc->lmi.N391;
-
-	return 0;
-}
-
-
-
-static void fr_netif(hdlc_device *hdlc, struct sk_buff *skb)
-{
-	fr_hdr *fh = (fr_hdr*)skb->data;
-	u8 *data = skb->data;
-	u16 dlci;
-	pvc_device *pvc;
-
-	if (skb->len<4 || fh->ea1 || data[2] != FR_UI)
-		goto rx_error;
-
-	dlci = q922_to_dlci(skb->data);
-
-	if (dlci == LMI_DLCI) {
-		if (data[3] == LMI_PROTO) {
-			if (fr_lmi_recv(hdlc, skb))
-				goto rx_error;
-			else {
-				/* No request pending */
-				hdlc->lmi.state &= ~LINK_STATE_REQUEST;
-				hdlc->lmi.last_poll = jiffies;
-				dev_kfree_skb_any(skb);
-				return;
-			}
-		}
-
-		printk(KERN_INFO "%s: Received non-LMI frame with LMI DLCI\n",
-		       hdlc_to_name(hdlc));
-		goto rx_error;
-	}
-
-	pvc = find_pvc(hdlc, dlci);
-	if (!pvc) {
-#ifdef DEBUG_PKT
-		printk(KERN_INFO "%s: No PVC for received frame's DLCI %d\n",
-		       hdlc_to_name(hdlc), dlci);
-#endif
-		goto rx_error;
-	}
-
-	if ((pvc->netdev.flags & IFF_UP) == 0) {
-#ifdef DEBUG_PKT
-		printk(KERN_INFO "%s: PVC for received frame's DLCI %d is down\n",
-		       hdlc_to_name(hdlc), dlci);
-#endif
-		goto rx_error;
-	}
-
-	pvc->stats.rx_packets++; /* PVC traffic */
-	pvc->stats.rx_bytes += skb->len;
-
-	if ((pvc->state & PVC_STATE_FECN) != (fh->fecn ? PVC_STATE_FECN : 0)) {
-#ifdef DEBUG_FECN
-		printk(KERN_DEBUG "%s: FECN O%s\n", pvc_to_name(pvc),
-		       fh->fecn ? "N" : "FF");
-#endif
-		pvc->state ^= PVC_STATE_FECN;
-	}
-
-	if ((pvc->state & PVC_STATE_BECN) != (fh->becn ? PVC_STATE_BECN : 0)) {
-#ifdef DEBUG_FECN
-		printk(KERN_DEBUG "%s: BECN O%s\n", pvc_to_name(pvc),
-		       fh->becn ? "N" : "FF");
-#endif
-		pvc->state ^= PVC_STATE_BECN;
-	}
-
-	if (pvc->state & PVC_STATE_BECN)
-		pvc->stats.rx_compressed++;
-
-	if (data[3] == NLPID_IP) {
-		skb_pull(skb, 4); /* Remove 4-byte header (hdr, UI, NLPID) */
-		skb->protocol = htons(ETH_P_IP);
-		skb->dev = &pvc->netdev;
-		netif_rx(skb);
-		return;
-	}
-
-
-	if (data[3] == NLPID_IPV6) {
-		skb_pull(skb, 4); /* Remove 4-byte header (hdr, UI, NLPID) */
-		skb->protocol = htons(ETH_P_IPV6);
-		skb->dev = &pvc->netdev;
-		netif_rx(skb);
-		return;
-	}
-
-	if (data[3] == FR_PAD && data[4] == NLPID_SNAP && data[5] == FR_PAD &&
-	    data[6] == FR_PAD && data[7] == FR_PAD &&
-	    ((data[8]<<8) | data[9]) == ETH_P_ARP) {
-		skb_pull(skb, 10);
-		skb->protocol = htons(ETH_P_ARP);
-		skb->dev = &pvc->netdev;
-		netif_rx(skb);
-		return;
-	}
-
-	printk(KERN_INFO "%s: Unusupported protocol %x\n",
-	       hdlc_to_name(hdlc), data[3]);
-	dev_kfree_skb_any(skb);
-	return;
-
- rx_error:
-	hdlc->stats.rx_errors++; /* Mark error */
-	dev_kfree_skb_any(skb);
-}
-
-
-
-static void fr_cisco_open(hdlc_device *hdlc)
-{
-	hdlc->lmi.state = LINK_STATE_CHANGED;
-	hdlc->lmi.txseq = hdlc->lmi.rxseq = 0;
-	hdlc->lmi.last_errors = 0xFFFFFFFF;
-	hdlc->lmi.N391cnt = 0;
-
-	init_timer(&hdlc->timer);
-	hdlc->timer.expires = jiffies + HZ; /* First poll after 1 second */
-	hdlc->timer.function = mode_is(hdlc, MODE_FR) ? fr_timer : cisco_timer;
-	hdlc->timer.data = (unsigned long)hdlc;
-	add_timer(&hdlc->timer);
-}
-
-
-
-static void fr_cisco_close(hdlc_device *hdlc)
-{
-	pvc_device *pvc = hdlc->first_pvc;
-
-	del_timer_sync(&hdlc->timer);
-
-	while(pvc) {		/* NULL in Cisco mode */
-		dev_close(&pvc->netdev); /* Shutdown all PVCs for this FRAD */
-		pvc = pvc->next;
-	}
-}
-
-
-
-/******************************************************************
- *
- *     generic HDLC routines
- *
- *****************************************************************/
-
-
-
-static int hdlc_change_mtu(struct net_device *dev, int new_mtu)
-{
-	if ((new_mtu < 68) || (new_mtu > HDLC_MAX_MTU))
-		return -EINVAL;
-	dev->mtu = new_mtu;
-	return 0;
-}
-
-
-
-/********************************************************
- *
- * PVC device routines
- *
- *******************************************************/
-
-static int pvc_open(struct net_device *dev)
-{
-	pvc_device *pvc = dev_to_pvc(dev);
-	int result = 0;
-
-	if ((hdlc_to_dev(pvc->master)->flags & IFF_UP) == 0)
-		return -EIO;  /* Master must be UP in order to activate PVC */
-
-	memset(&(pvc->stats), 0, sizeof(struct net_device_stats));
-	pvc->state = 0;
-
-	if (!mode_is(pvc->master, MODE_SOFT) && pvc->master->open_pvc)
-		result = pvc->master->open_pvc(pvc);
-	if (result)
-		return result;
-
-	pvc->master->lmi.state |= LINK_STATE_CHANGED;
-	return 0;
-}
-
-
-
-static int pvc_close(struct net_device *dev)
-{
-	pvc_device *pvc = dev_to_pvc(dev);
-	pvc->state = 0;
-
-	if (!mode_is(pvc->master, MODE_SOFT) && pvc->master->close_pvc)
-		pvc->master->close_pvc(pvc);
-
-	pvc->master->lmi.state |= LINK_STATE_CHANGED;
-	return 0;
-}
-
-
-
-static int pvc_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	pvc_device *pvc = dev_to_pvc(dev);
-
-	if (pvc->state & PVC_STATE_ACTIVE) {
-		skb->dev = hdlc_to_dev(pvc->master);
-		pvc->stats.tx_bytes += skb->len;
-		pvc->stats.tx_packets++;
-		if (pvc->state & PVC_STATE_FECN)
-			pvc->stats.tx_compressed++; /* TX Congestion counter */
-		dev_queue_xmit(skb);
-	} else {
-		pvc->stats.tx_dropped++;
-		dev_kfree_skb(skb);
-	}
-
-	return 0;
-}
-
-
-
-static struct net_device_stats *pvc_get_stats(struct net_device *dev)
-{
-	pvc_device *pvc = dev_to_pvc(dev);
-	return &pvc->stats;
-}
-
-
-
-static int pvc_change_mtu(struct net_device *dev, int new_mtu)
-{
-	if ((new_mtu < 68) || (new_mtu > HDLC_MAX_MTU))
-		return -EINVAL;
-	dev->mtu = new_mtu;
-	return 0;
-}
-
-
-
-static void destroy_pvc_list(hdlc_device *hdlc)
-{
-	pvc_device *pvc = hdlc->first_pvc;
-	while(pvc) {
-		pvc_device *next = pvc->next;
-		unregister_netdevice(&pvc->netdev);
-		kfree(pvc);
-		pvc = next;
-	}
-
-	hdlc->first_pvc = NULL;	/* All PVCs destroyed */
-	hdlc->pvc_count = 0;
-	hdlc->lmi.state |= LINK_STATE_CHANGED;
-}
-
-
-
-/********************************************************
- *
- * X.25 protocol support routines
- *
- *******************************************************/
-
-#ifdef CONFIG_HDLC_X25
-/* These functions are callbacks called by LAPB layer */
-
-void x25_connect_disconnect(void *token, int reason, int code)
-{
-	hdlc_device *hdlc = token;
-	struct sk_buff *skb;
-	unsigned char *ptr;
-
-	if ((skb = dev_alloc_skb(1)) == NULL) {
-		printk(KERN_ERR "%s: out of memory\n", hdlc_to_name(hdlc));
-		return;
-	}
-
-	ptr = skb_put(skb, 1);
-	*ptr = code;
-
-	skb->dev = hdlc_to_dev(hdlc);
-	skb->protocol = htons(ETH_P_X25);
-	skb->mac.raw = skb->data;
-	skb->pkt_type = PACKET_HOST;
-
-	netif_rx(skb);
-}
-
-void x25_connected(void *token, int reason)
-{
-	x25_connect_disconnect(token, reason, 1);
-}
-
-void x25_disconnected(void *token, int reason)
-{
-	x25_connect_disconnect(token, reason, 2);
-}
-
-
-int x25_data_indication(void *token, struct sk_buff *skb)
-{
-	hdlc_device *hdlc = token;
-	unsigned char *ptr;
-
-	ptr = skb_push(skb, 1);
-	*ptr = 0;
-
-	skb->dev = hdlc_to_dev(hdlc);
-	skb->protocol = htons(ETH_P_X25);
-	skb->mac.raw = skb->data;
-	skb->pkt_type = PACKET_HOST;
-
-	return netif_rx(skb);
-}
-
-
-void x25_data_transmit(void *token, struct sk_buff *skb)
-{
-	hdlc_device *hdlc = token;
-	hdlc->xmit(hdlc, skb);	/* Ignore return value :-( */
-}
-#endif /* CONFIG_HDLC_X25 */
-
-
-/********************************************************
- *
- * HDLC device routines
- *
- *******************************************************/
-
-static int hdlc_open(struct net_device *dev)
-{
-	hdlc_device *hdlc = dev_to_hdlc(dev);
-	int result;
-
-	if (hdlc->mode == MODE_NONE)
-		return -ENOSYS;
-
-	memset(&(hdlc->stats), 0, sizeof(struct net_device_stats));
-
-	if (mode_is(hdlc, MODE_FR | MODE_SOFT) ||
-	    mode_is(hdlc, MODE_CISCO | MODE_SOFT))
-		fr_cisco_open(hdlc);
-#ifdef CONFIG_HDLC_PPP
-	else if (mode_is(hdlc, MODE_PPP | MODE_SOFT)) {
-		sppp_attach(&hdlc->pppdev);
-		/* sppp_attach nukes them. We don't need syncppp's ioctl */
-		dev->do_ioctl = hdlc_ioctl;
-		hdlc->pppdev.sppp.pp_flags &= ~PP_CISCO;
-		dev->type = ARPHRD_PPP;
-		result = sppp_open(dev);
-		if (result) {
-			sppp_detach(dev);
-			return result;
-		}
-	}
-#endif
-#ifdef CONFIG_HDLC_X25
-	else if (mode_is(hdlc, MODE_X25)) {
-		struct lapb_register_struct cb;
-
-		cb.connect_confirmation = x25_connected;
-		cb.connect_indication = x25_connected;
-		cb.disconnect_confirmation = x25_disconnected;
-		cb.disconnect_indication = x25_disconnected;
-		cb.data_indication = x25_data_indication;
-		cb.data_transmit = x25_data_transmit;
-
-		result = lapb_register(hdlc, &cb);
-		if (result != LAPB_OK)
-			return result;
-	}
-#endif
-	result = hdlc->open(hdlc);
-	if (result) {
-		if (mode_is(hdlc, MODE_FR | MODE_SOFT) ||
-		    mode_is(hdlc, MODE_CISCO | MODE_SOFT))
-			fr_cisco_close(hdlc);
-#ifdef CONFIG_HDLC_PPP
-		else if (mode_is(hdlc, MODE_PPP | MODE_SOFT)) {
-			sppp_close(dev);
-			sppp_detach(dev);
-			dev->rebuild_header = NULL;
-			dev->change_mtu = hdlc_change_mtu;
-			dev->mtu = HDLC_MAX_MTU;
-			dev->hard_header_len = 16;
-		}
-#endif
-#ifdef CONFIG_HDLC_X25
-		else if (mode_is(hdlc, MODE_X25))
-			lapb_unregister(hdlc);
-#endif
-	}
-
-	return result;
-}
-
-
-
-static int hdlc_close(struct net_device *dev)
-{
-	hdlc_device *hdlc = dev_to_hdlc(dev);
-
-	hdlc->close(hdlc);
-
-	if (mode_is(hdlc, MODE_FR | MODE_SOFT) ||
-	    mode_is(hdlc, MODE_CISCO | MODE_SOFT))
-		fr_cisco_close(hdlc);
-#ifdef CONFIG_HDLC_PPP
-	else if (mode_is(hdlc, MODE_PPP | MODE_SOFT)) {
-		sppp_close(dev);
-		sppp_detach(dev);
-		dev->rebuild_header = NULL;
-		dev->change_mtu = hdlc_change_mtu;
-		dev->mtu = HDLC_MAX_MTU;
-		dev->hard_header_len = 16;
-	}
-#endif
-#ifdef CONFIG_HDLC_X25
-	else if (mode_is(hdlc, MODE_X25))
-		lapb_unregister(hdlc);
-#endif
-	return 0;
-}
-
-
-
-static int hdlc_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	hdlc_device *hdlc = dev_to_hdlc(dev);
-
-#ifdef CONFIG_HDLC_X25
-	if (mode_is(hdlc, MODE_X25 | MODE_SOFT)) {
-		int result;
-
-
-		/* X.25 to LAPB */
-		switch (skb->data[0]) {
-		case 0:		/* Data to be transmitted */
-			skb_pull(skb, 1);
-			if ((result = lapb_data_request(hdlc, skb)) != LAPB_OK)
-				dev_kfree_skb(skb);
-			return 0;
-
-		case 1:
-			if ((result = lapb_connect_request(hdlc))!= LAPB_OK) {
-				if (result == LAPB_CONNECTED) {
-				/* Send connect confirm. msg to level 3 */
-					x25_connected(hdlc, 0);
-				} else {
-					printk(KERN_ERR "%s: LAPB connect "
-					       "request failed, error code = "
-					       "%i\n", hdlc_to_name(hdlc),
-					       result);
-				}
-			}
-			break;
-
-		case 2:
-			if ((result=lapb_disconnect_request(hdlc))!=LAPB_OK) {
-				if (result == LAPB_NOTCONNECTED) {
-				/* Send disconnect confirm. msg to level 3 */
-					x25_disconnected(hdlc, 0);
-				} else {
-					printk(KERN_ERR "%s: LAPB disconnect "
-					       "request failed, error code = "
-					       "%i\n", hdlc_to_name(hdlc),
-					       result);
-				}
-			}
-			break;
-
-		default:
-			/* to be defined */
-			break;
-		}
-
-		dev_kfree_skb(skb);
-		return 0;
-	} /* MODE_X25 */
-#endif /* CONFIG_HDLC_X25 */
-
-	return hdlc->xmit(hdlc, skb);
-}
-
-
-
-void hdlc_netif_rx(hdlc_device *hdlc, struct sk_buff *skb)
-{
-/* skb contains raw HDLC frame, in both hard- and software modes */
-	skb->mac.raw = skb->data;
-
-	switch(hdlc->mode & MODE_MASK) {
-	case MODE_HDLC:
-		skb->protocol = htons(ETH_P_IP);
-		skb->dev = hdlc_to_dev(hdlc);
-		netif_rx(skb);
-		return;
-
-	case MODE_FR:
-		fr_netif(hdlc, skb);
-		return;
-
-	case MODE_CISCO:
-		cisco_netif(hdlc, skb);
-		return;
-
-#ifdef CONFIG_HDLC_PPP
-	case MODE_PPP:
-#if 0
-		sppp_input(hdlc_to_dev(hdlc), skb);
-#else
-		skb->protocol = htons(ETH_P_WAN_PPP);
-		skb->dev = hdlc_to_dev(hdlc);
-		netif_rx(skb);
-#endif
-		return;
-#endif
-#ifdef CONFIG_HDLC_X25
-	case MODE_X25:
-		skb->dev = hdlc_to_dev(hdlc);
-		if (lapb_data_received(hdlc, skb) == LAPB_OK)
-			return;
-		break;
-#endif
-	}
-
-	hdlc->stats.rx_errors++;
-	dev_kfree_skb_any(skb);
-}
-
-
-
-static struct net_device_stats *hdlc_get_stats(struct net_device *dev)
-{
-	return &dev_to_hdlc(dev)->stats;
-}
-
-
-
-static int hdlc_set_mode(hdlc_device *hdlc, int mode)
-{
-	int result = -1;	/* Default to soft modes */
-	struct net_device *dev = hdlc_to_dev(hdlc);
-
-	if(!capable(CAP_NET_ADMIN))
-		return -EPERM;
-
-	if(dev->flags & IFF_UP)
-		return -EBUSY;
-
-	dev->addr_len = 0;
-	dev->hard_header = NULL;
-	hdlc->mode = MODE_NONE;
-
-	if (!(mode & MODE_SOFT))
-		switch(mode & MODE_MASK) {
-		case MODE_HDLC:
-			result = hdlc->set_mode ?
-				hdlc->set_mode(hdlc, MODE_HDLC) : 0;
-			break;
-
-		case MODE_CISCO: /* By card */
-#ifdef CONFIG_HDLC_PPP
-		case MODE_PPP:
-#endif
-#ifdef CONFIG_HDLC_X25
-		case MODE_X25:
-#endif
-		case MODE_FR:
-			result = hdlc->set_mode ?
-				hdlc->set_mode(hdlc, mode) : -ENOSYS;
-			break;
-
-		default:
-			return -EINVAL;
-		}
-
-	if (result) {
-		mode |= MODE_SOFT; /* Try "host software" protocol */
-
-		switch(mode & MODE_MASK) {
-		case MODE_CISCO:
-			dev->hard_header = cisco_hard_header;
-			break;
-
-#ifdef CONFIG_HDLC_PPP
-		case MODE_PPP:
-			break;
-#endif
-#ifdef CONFIG_HDLC_X25
-		case MODE_X25:
-			break;
-#endif
-
-		case MODE_FR:
-			dev->hard_header = fr_hard_header;
-			dev->addr_len = 2;
-			*(u16*)dev->dev_addr = htons(LMI_DLCI);
-			dlci_to_q922(dev->broadcast, LMI_DLCI);
-			break;
-
-		default:
-			return -EINVAL;
-		}
-
-		result = hdlc->set_mode ?
-			hdlc->set_mode(hdlc, MODE_HDLC) : 0;
-	}
-
-	if (result)
-		return result;
-
-	hdlc->mode = mode;
-	switch(mode & MODE_MASK) {
-#ifdef CONFIG_HDLC_PPP
-	case MODE_PPP:   dev->type = ARPHRD_PPP;   break;
-#endif
-#ifdef CONFIG_HDLC_X25
-	case MODE_X25:   dev->type = ARPHRD_X25;   break;
-#endif
-	case MODE_FR:    dev->type = ARPHRD_FRAD;  break;
-	case MODE_CISCO: dev->type = ARPHRD_CISCO; break;
-	default:         dev->type = ARPHRD_RAWHDLC;
-	}
-
-	memset(&(hdlc->stats), 0, sizeof(struct net_device_stats));
-	destroy_pvc_list(hdlc);
-	return 0;
-}
-
-
-
-static int hdlc_fr_pvc(hdlc_device *hdlc, int dlci)
-{
-	pvc_device **pvc_p = &hdlc->first_pvc;
-	pvc_device *pvc;
-	int result, create = 1;	/* Create or delete PVC */
-
-	if(!capable(CAP_NET_ADMIN))
-		return -EPERM;
-
-	if(dlci<0) {
-		dlci = -dlci;
-		create = 0;
-	}
-
-	if(dlci <= 0 || dlci >= 1024)
-		return -EINVAL;	/* Only 10 bits for DLCI, DLCI=0 is reserved */
-
-	if(!mode_is(hdlc, MODE_FR))
-		return -EINVAL;	/* Only meaningfull on FR */
-
-	while(*pvc_p) {
-		if (netdev_dlci(&(*pvc_p)->netdev) == dlci)
-			break;
-		pvc_p = &(*pvc_p)->next;
-	}
-
-	if (create) {		/* Create PVC */
-		if (*pvc_p != NULL)
-			return -EEXIST;
-
-		pvc = *pvc_p = kmalloc(sizeof(pvc_device), GFP_KERNEL);
-		if (!pvc) {
-			printk(KERN_WARNING "%s: Memory squeeze on "
-			       "hdlc_fr_pvc()\n", hdlc_to_name(hdlc));
-			return -ENOBUFS;
-		}
-		memset(pvc, 0, sizeof(pvc_device));
-
-		pvc->netdev.hard_start_xmit = pvc_xmit;
-		pvc->netdev.get_stats = pvc_get_stats;
-		pvc->netdev.open = pvc_open;
-		pvc->netdev.stop = pvc_close;
-		pvc->netdev.change_mtu = pvc_change_mtu;
-		pvc->netdev.mtu = HDLC_MAX_MTU;
-
-		pvc->netdev.type = ARPHRD_DLCI;
-		pvc->netdev.hard_header_len = 16;
-		pvc->netdev.hard_header = fr_hard_header;
-		pvc->netdev.tx_queue_len = 0;
-		pvc->netdev.flags = IFF_POINTOPOINT;
-
-		pvc->master = hdlc;
-		*(u16*)pvc->netdev.dev_addr = htons(dlci);
-		dlci_to_q922(pvc->netdev.broadcast, dlci);
-		pvc->netdev.addr_len = 2;
-		pvc->netdev.irq = hdlc_to_dev(hdlc)->irq;
-
-		result = dev_alloc_name(&pvc->netdev, "pvc%d");
-		if (result < 0) {
-			kfree(pvc);
-			*pvc_p = NULL;
-			return result;
-		}
-
-		if (register_netdevice(&pvc->netdev) != 0) {
-			kfree(pvc);
-			*pvc_p = NULL;
-			return -EIO;
-		}
-
-		if (!mode_is(hdlc, MODE_SOFT) && hdlc->create_pvc) {
-			result = hdlc->create_pvc(pvc);
-			if (result) {
-				unregister_netdevice(&pvc->netdev);
-				kfree(pvc);
-				*pvc_p = NULL;
-				return result;
-			}
-		}
-
-		hdlc->lmi.state |= LINK_STATE_CHANGED;
-		hdlc->pvc_count++;
-		return 0;
-	}
-
-	if (*pvc_p == NULL)		/* Delete PVC */
-		return -ENOENT;
-
-	pvc = *pvc_p;
-
-	if (pvc->netdev.flags & IFF_UP)
-		return -EBUSY;		/* PVC in use */
-
-	if (!mode_is(hdlc, MODE_SOFT) && hdlc->destroy_pvc)
-		hdlc->destroy_pvc(pvc);
-
-	hdlc->lmi.state |= LINK_STATE_CHANGED;
-	hdlc->pvc_count--;
-	*pvc_p = pvc->next;
-	unregister_netdevice(&pvc->netdev);
-	kfree(pvc);
-	return 0;
-}
-
-
-
-static int hdlc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
-	hdlc_device *hdlc = dev_to_hdlc(dev);
-
-	switch(cmd) {
-	case HDLCGMODE:
-		ifr->ifr_ifru.ifru_ivalue = hdlc->mode;
-		return 0;
-
-	case HDLCSMODE:
-		return hdlc_set_mode(hdlc, ifr->ifr_ifru.ifru_ivalue);
-
-	case HDLCPVC:
-		return hdlc_fr_pvc(hdlc, ifr->ifr_ifru.ifru_ivalue);
-
-	default:
-		if (hdlc->ioctl != NULL)
-			return hdlc->ioctl(hdlc, ifr, cmd);
-	}
-
-	return -EINVAL;
-}
-
-
-
-static int hdlc_init(struct net_device *dev)
-{
-	hdlc_device *hdlc = dev_to_hdlc(dev);
-
-	memset(&(hdlc->stats), 0, sizeof(struct net_device_stats));
-
-	dev->get_stats = hdlc_get_stats;
-	dev->open = hdlc_open;
-	dev->stop = hdlc_close;
-	dev->hard_start_xmit = hdlc_xmit;
-	dev->do_ioctl = hdlc_ioctl;
-	dev->change_mtu = hdlc_change_mtu;
-	dev->mtu = HDLC_MAX_MTU;
-
-	dev->type = ARPHRD_RAWHDLC;
-	dev->hard_header_len = 16;
-
-	dev->flags = IFF_POINTOPOINT | IFF_NOARP;
-
-	return 0;
-}
-
-
-
-int register_hdlc_device(hdlc_device *hdlc)
-{
-	int result;
-	struct net_device *dev = hdlc_to_dev(hdlc);
-
-	dev->init = hdlc_init;
-	dev->priv = &hdlc->syncppp_ptr;
-	hdlc->syncppp_ptr = &hdlc->pppdev;
-	hdlc->pppdev.dev = dev;
-	hdlc->mode = MODE_NONE;
-	hdlc->lmi.T391 = 10;	/* polling verification timer */
-	hdlc->lmi.T392 = 15;	/* link integrity verification polling timer */
-	hdlc->lmi.N391 = 6;	/* full status polling counter */
-	hdlc->lmi.N392 = 3;	/* error threshold */
-	hdlc->lmi.N393 = 4;	/* monitored events count */
-
-	result = dev_alloc_name(dev, "hdlc%d");
-	if (result<0)
-		return result;
-
-	result = register_netdev(dev);
-	if (result != 0)
-		return -EIO;
-
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-
-
-void unregister_hdlc_device(hdlc_device *hdlc)
-{
-	destroy_pvc_list(hdlc);
-	unregister_netdev(hdlc_to_dev(hdlc));
-	MOD_DEC_USE_COUNT;
-}
-
-MODULE_AUTHOR("Krzysztof Halasa <khc@pm.waw.pl>");
-MODULE_DESCRIPTION("HDLC support module");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(hdlc_netif_rx);
-EXPORT_SYMBOL(register_hdlc_device);
-EXPORT_SYMBOL(unregister_hdlc_device);
-
-static int __init hdlc_module_init(void)
-{
-	printk(KERN_INFO "%s\n", version);
-	return 0;
-}
-
-
-module_init(hdlc_module_init);
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TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)