Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 2538 insertions, 0 deletions

diff --git a/net/atm/lec.c b/net/atm/lec.c
new file mode 100644
index 000000000000..a0752487026d
--- /dev/null
+++ b/net/atm/lec.c
@@ -0,0 +1,2538 @@
+/*
+ * lec.c: Lan Emulation driver 
+ * Marko Kiiskila mkiiskila@yahoo.com
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+
+/* We are ethernet device */
+#include <linux/if_ether.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <net/sock.h>
+#include <linux/skbuff.h>
+#include <linux/ip.h>
+#include <asm/byteorder.h>
+#include <asm/uaccess.h>
+#include <net/arp.h>
+#include <net/dst.h>
+#include <linux/proc_fs.h>
+#include <linux/spinlock.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+/* TokenRing if needed */
+#ifdef CONFIG_TR
+#include <linux/trdevice.h>
+#endif
+
+/* And atm device */
+#include <linux/atmdev.h>
+#include <linux/atmlec.h>
+
+/* Proxy LEC knows about bridging */
+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
+#include <linux/if_bridge.h>
+#include "../bridge/br_private.h"
+
+static unsigned char bridge_ula_lec[] = {0x01, 0x80, 0xc2, 0x00, 0x00};
+#endif
+
+/* Modular too */
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include "lec.h"
+#include "lec_arpc.h"
+#include "resources.h"
+
+#if 0
+#define DPRINTK printk
+#else
+#define DPRINTK(format,args...)
+#endif
+
+#define DUMP_PACKETS 0 /* 0 = None,
+                        * 1 = 30 first bytes
+                        * 2 = Whole packet
+                        */
+
+#define LEC_UNRES_QUE_LEN 8 /* number of tx packets to queue for a
+                               single destination while waiting for SVC */
+
+static int lec_open(struct net_device *dev);
+static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static int lec_close(struct net_device *dev);
+static struct net_device_stats *lec_get_stats(struct net_device *dev);
+static void lec_init(struct net_device *dev);
+static struct lec_arp_table* lec_arp_find(struct lec_priv *priv,
+                                                     unsigned char *mac_addr);
+static int lec_arp_remove(struct lec_priv *priv,
+				     struct lec_arp_table *to_remove);
+/* LANE2 functions */
+static void lane2_associate_ind (struct net_device *dev, u8 *mac_address,
+                          u8 *tlvs, u32 sizeoftlvs);
+static int lane2_resolve(struct net_device *dev, u8 *dst_mac, int force,
+                  u8 **tlvs, u32 *sizeoftlvs);
+static int lane2_associate_req (struct net_device *dev, u8 *lan_dst,
+                         u8 *tlvs, u32 sizeoftlvs);
+
+static int lec_addr_delete(struct lec_priv *priv, unsigned char *atm_addr, 
+			   unsigned long permanent);
+static void lec_arp_check_empties(struct lec_priv *priv,
+				  struct atm_vcc *vcc, struct sk_buff *skb);
+static void lec_arp_destroy(struct lec_priv *priv);
+static void lec_arp_init(struct lec_priv *priv);
+static struct atm_vcc* lec_arp_resolve(struct lec_priv *priv,
+				       unsigned char *mac_to_find,
+				       int is_rdesc,
+				       struct lec_arp_table **ret_entry);
+static void lec_arp_update(struct lec_priv *priv, unsigned char *mac_addr,
+			   unsigned char *atm_addr, unsigned long remoteflag,
+			   unsigned int targetless_le_arp);
+static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id);
+static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc);
+static void lec_set_flush_tran_id(struct lec_priv *priv,
+				  unsigned char *atm_addr,
+				  unsigned long tran_id);
+static void lec_vcc_added(struct lec_priv *priv, struct atmlec_ioc *ioc_data,
+			  struct atm_vcc *vcc,
+			  void (*old_push)(struct atm_vcc *vcc, struct sk_buff *skb));
+static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc);
+
+static struct lane2_ops lane2_ops = {
+	lane2_resolve,         /* resolve,             spec 3.1.3 */
+	lane2_associate_req,   /* associate_req,       spec 3.1.4 */
+	NULL                  /* associate indicator, spec 3.1.5 */
+};
+
+static unsigned char bus_mac[ETH_ALEN] = {0xff,0xff,0xff,0xff,0xff,0xff};
+
+/* Device structures */
+static struct net_device *dev_lec[MAX_LEC_ITF];
+
+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
+static void lec_handle_bridge(struct sk_buff *skb, struct net_device *dev)
+{
+        struct ethhdr *eth;
+        char *buff;
+        struct lec_priv *priv;
+
+        /* Check if this is a BPDU. If so, ask zeppelin to send
+         * LE_TOPOLOGY_REQUEST with the same value of Topology Change bit
+         * as the Config BPDU has */
+        eth = (struct ethhdr *)skb->data;
+        buff = skb->data + skb->dev->hard_header_len;
+        if (*buff++ == 0x42 && *buff++ == 0x42 && *buff++ == 0x03) {
+		struct sock *sk;
+                struct sk_buff *skb2;
+                struct atmlec_msg *mesg;
+
+                skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
+                if (skb2 == NULL) return;
+                skb2->len = sizeof(struct atmlec_msg);
+                mesg = (struct atmlec_msg *)skb2->data;
+                mesg->type = l_topology_change;
+                buff += 4;
+                mesg->content.normal.flag = *buff & 0x01; /* 0x01 is topology change */
+
+                priv = (struct lec_priv *)dev->priv;
+                atm_force_charge(priv->lecd, skb2->truesize);
+		sk = sk_atm(priv->lecd);
+                skb_queue_tail(&sk->sk_receive_queue, skb2);
+                sk->sk_data_ready(sk, skb2->len);
+        }
+
+        return;
+}
+#endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */
+
+/*
+ * Modelled after tr_type_trans
+ * All multicast and ARE or STE frames go to BUS.
+ * Non source routed frames go by destination address.
+ * Last hop source routed frames go by destination address.
+ * Not last hop source routed frames go by _next_ route descriptor.
+ * Returns pointer to destination MAC address or fills in rdesc
+ * and returns NULL.
+ */
+#ifdef CONFIG_TR
+static unsigned char *get_tr_dst(unsigned char *packet, unsigned char *rdesc)
+{
+        struct trh_hdr *trh;
+        int riflen, num_rdsc;
+        
+        trh = (struct trh_hdr *)packet;
+        if (trh->daddr[0] & (uint8_t)0x80)
+                return bus_mac; /* multicast */
+
+        if (trh->saddr[0] & TR_RII) {
+                riflen = (ntohs(trh->rcf) & TR_RCF_LEN_MASK) >> 8;
+                if ((ntohs(trh->rcf) >> 13) != 0)
+                        return bus_mac; /* ARE or STE */
+        }
+        else
+                return trh->daddr; /* not source routed */
+
+        if (riflen < 6)
+                return trh->daddr; /* last hop, source routed */
+                
+        /* riflen is 6 or more, packet has more than one route descriptor */
+        num_rdsc = (riflen/2) - 1;
+        memset(rdesc, 0, ETH_ALEN);
+        /* offset 4 comes from LAN destination field in LE control frames */
+        if (trh->rcf & htons((uint16_t)TR_RCF_DIR_BIT))
+                memcpy(&rdesc[4], &trh->rseg[num_rdsc-2], sizeof(uint16_t));
+        else {
+                memcpy(&rdesc[4], &trh->rseg[1], sizeof(uint16_t));
+                rdesc[5] = ((ntohs(trh->rseg[0]) & 0x000f) | (rdesc[5] & 0xf0));
+        }
+
+        return NULL;
+}
+#endif /* CONFIG_TR */
+
+/*
+ * Open/initialize the netdevice. This is called (in the current kernel)
+ * sometime after booting when the 'ifconfig' program is run.
+ *
+ * This routine should set everything up anew at each open, even
+ * registers that "should" only need to be set once at boot, so that
+ * there is non-reboot way to recover if something goes wrong.
+ */
+
+static int 
+lec_open(struct net_device *dev)
+{
+        struct lec_priv *priv = (struct lec_priv *)dev->priv;
+        
+	netif_start_queue(dev);
+        memset(&priv->stats,0,sizeof(struct net_device_stats));
+        
+        return 0;
+}
+
+static __inline__ void
+lec_send(struct atm_vcc *vcc, struct sk_buff *skb, struct lec_priv *priv)
+{
+	ATM_SKB(skb)->vcc = vcc;
+	ATM_SKB(skb)->atm_options = vcc->atm_options;
+
+	atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
+	if (vcc->send(vcc, skb) < 0) {
+		priv->stats.tx_dropped++;
+		return;
+	}
+
+	priv->stats.tx_packets++;
+	priv->stats.tx_bytes += skb->len;
+}
+
+static void
+lec_tx_timeout(struct net_device *dev)
+{
+	printk(KERN_INFO "%s: tx timeout\n", dev->name);
+	dev->trans_start = jiffies;
+	netif_wake_queue(dev);
+}
+
+static int 
+lec_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+        struct sk_buff *skb2;
+        struct lec_priv *priv = (struct lec_priv *)dev->priv;
+        struct lecdatahdr_8023 *lec_h;
+        struct atm_vcc *vcc;
+	struct lec_arp_table *entry;
+        unsigned char *dst;
+	int min_frame_size;
+#ifdef CONFIG_TR
+        unsigned char rdesc[ETH_ALEN]; /* Token Ring route descriptor */
+#endif
+        int is_rdesc;
+#if DUMP_PACKETS > 0
+        char buf[300];
+        int i=0;
+#endif /* DUMP_PACKETS >0 */
+        
+        DPRINTK("lec_start_xmit called\n");  
+        if (!priv->lecd) {
+                printk("%s:No lecd attached\n",dev->name);
+                priv->stats.tx_errors++;
+                netif_stop_queue(dev);
+                return -EUNATCH;
+        } 
+
+        DPRINTK("skbuff head:%lx data:%lx tail:%lx end:%lx\n",
+                (long)skb->head, (long)skb->data, (long)skb->tail,
+                (long)skb->end);
+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
+        if (memcmp(skb->data, bridge_ula_lec, sizeof(bridge_ula_lec)) == 0)
+                lec_handle_bridge(skb, dev);
+#endif
+
+        /* Make sure we have room for lec_id */
+        if (skb_headroom(skb) < 2) {
+
+                DPRINTK("lec_start_xmit: reallocating skb\n");
+                skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN);
+                kfree_skb(skb);
+                if (skb2 == NULL) return 0;
+                skb = skb2;
+        }
+        skb_push(skb, 2);
+
+        /* Put le header to place, works for TokenRing too */
+        lec_h = (struct lecdatahdr_8023*)skb->data;
+        lec_h->le_header = htons(priv->lecid); 
+
+#ifdef CONFIG_TR
+        /* Ugly. Use this to realign Token Ring packets for
+         * e.g. PCA-200E driver. */
+        if (priv->is_trdev) {
+                skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN);
+                kfree_skb(skb);
+                if (skb2 == NULL) return 0;
+                skb = skb2;
+        }
+#endif
+
+#if DUMP_PACKETS > 0
+        printk("%s: send datalen:%ld lecid:%4.4x\n", dev->name,
+               skb->len, priv->lecid);
+#if DUMP_PACKETS >= 2
+        for(i=0;i<skb->len && i <99;i++) {
+                sprintf(buf+i*3,"%2.2x ",0xff&skb->data[i]);
+        }
+#elif DUMP_PACKETS >= 1
+        for(i=0;i<skb->len && i < 30;i++) {
+                sprintf(buf+i*3,"%2.2x ", 0xff&skb->data[i]);
+        }
+#endif /* DUMP_PACKETS >= 1 */
+        if (i==skb->len)
+                printk("%s\n",buf);
+        else
+                printk("%s...\n",buf);
+#endif /* DUMP_PACKETS > 0 */
+
+        /* Minimum ethernet-frame size */
+#ifdef CONFIG_TR
+        if (priv->is_trdev)
+                min_frame_size = LEC_MINIMUM_8025_SIZE;
+	else
+#endif
+        min_frame_size = LEC_MINIMUM_8023_SIZE;
+        if (skb->len < min_frame_size) {
+                if ((skb->len + skb_tailroom(skb)) < min_frame_size) {
+                        skb2 = skb_copy_expand(skb, 0,
+                            min_frame_size - skb->truesize, GFP_ATOMIC);
+                                dev_kfree_skb(skb);
+                        if (skb2 == NULL) {
+                                priv->stats.tx_dropped++;
+                                return 0;
+                        }
+                        skb = skb2;
+                }
+		skb_put(skb, min_frame_size - skb->len);
+        }
+        
+        /* Send to right vcc */
+        is_rdesc = 0;
+        dst = lec_h->h_dest;
+#ifdef CONFIG_TR
+        if (priv->is_trdev) {
+                dst = get_tr_dst(skb->data+2, rdesc);
+                if (dst == NULL) {
+                        dst = rdesc;
+                        is_rdesc = 1;
+                }
+        }
+#endif
+        entry = NULL;
+        vcc = lec_arp_resolve(priv, dst, is_rdesc, &entry);
+        DPRINTK("%s:vcc:%p vcc_flags:%x, entry:%p\n", dev->name,
+                vcc, vcc?vcc->flags:0, entry);
+        if (!vcc || !test_bit(ATM_VF_READY,&vcc->flags)) {    
+                if (entry && (entry->tx_wait.qlen < LEC_UNRES_QUE_LEN)) {
+                        DPRINTK("%s:lec_start_xmit: queuing packet, ", dev->name);
+                        DPRINTK("MAC address 0x%02x:%02x:%02x:%02x:%02x:%02x\n",
+                                lec_h->h_dest[0], lec_h->h_dest[1], lec_h->h_dest[2],
+                                lec_h->h_dest[3], lec_h->h_dest[4], lec_h->h_dest[5]);
+                        skb_queue_tail(&entry->tx_wait, skb);
+                } else {
+                        DPRINTK("%s:lec_start_xmit: tx queue full or no arp entry, dropping, ", dev->name);
+                        DPRINTK("MAC address 0x%02x:%02x:%02x:%02x:%02x:%02x\n",
+                                lec_h->h_dest[0], lec_h->h_dest[1], lec_h->h_dest[2],
+                                lec_h->h_dest[3], lec_h->h_dest[4], lec_h->h_dest[5]);
+                        priv->stats.tx_dropped++;
+                        dev_kfree_skb(skb);
+                }
+                return 0;
+        }
+                
+#if DUMP_PACKETS > 0                    
+        printk("%s:sending to vpi:%d vci:%d\n", dev->name,
+               vcc->vpi, vcc->vci);       
+#endif /* DUMP_PACKETS > 0 */
+                
+        while (entry && (skb2 = skb_dequeue(&entry->tx_wait))) {
+                DPRINTK("lec.c: emptying tx queue, ");
+                DPRINTK("MAC address 0x%02x:%02x:%02x:%02x:%02x:%02x\n",
+                        lec_h->h_dest[0], lec_h->h_dest[1], lec_h->h_dest[2],
+                        lec_h->h_dest[3], lec_h->h_dest[4], lec_h->h_dest[5]);
+		lec_send(vcc, skb2, priv);
+        }
+
+	lec_send(vcc, skb, priv);
+
+	if (!atm_may_send(vcc, 0)) {
+		struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
+
+		vpriv->xoff = 1;
+		netif_stop_queue(dev);
+
+		/*
+		 * vcc->pop() might have occurred in between, making
+		 * the vcc usuable again.  Since xmit is serialized,
+		 * this is the only situation we have to re-test.
+		 */
+
+		if (atm_may_send(vcc, 0))
+			netif_wake_queue(dev);
+	}
+
+	dev->trans_start = jiffies;
+        return 0;
+}
+
+/* The inverse routine to net_open(). */
+static int 
+lec_close(struct net_device *dev) 
+{
+        netif_stop_queue(dev);
+        return 0;
+}
+
+/*
+ * Get the current statistics.
+ * This may be called with the card open or closed.
+ */
+static struct net_device_stats *
+lec_get_stats(struct net_device *dev)
+{
+        return &((struct lec_priv *)dev->priv)->stats;
+}
+
+static int 
+lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+	unsigned long flags;
+        struct net_device *dev = (struct net_device*)vcc->proto_data;
+        struct lec_priv *priv = (struct lec_priv*)dev->priv;
+        struct atmlec_msg *mesg;
+        struct lec_arp_table *entry;
+        int i;
+        char *tmp; /* FIXME */
+
+	atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
+        mesg = (struct atmlec_msg *)skb->data;
+        tmp = skb->data;
+        tmp += sizeof(struct atmlec_msg);
+        DPRINTK("%s: msg from zeppelin:%d\n", dev->name, mesg->type);
+        switch(mesg->type) {
+        case l_set_mac_addr:
+                for (i=0;i<6;i++) {
+                        dev->dev_addr[i] = mesg->content.normal.mac_addr[i];
+                }    
+                break;
+        case l_del_mac_addr:
+                for(i=0;i<6;i++) {
+                        dev->dev_addr[i] = 0;
+                }
+                break;
+        case l_addr_delete:
+                lec_addr_delete(priv, mesg->content.normal.atm_addr, 
+                                mesg->content.normal.flag);
+                break;
+        case l_topology_change:
+                priv->topology_change = mesg->content.normal.flag;  
+                break;
+        case l_flush_complete:
+                lec_flush_complete(priv, mesg->content.normal.flag);
+                break;
+        case l_narp_req: /* LANE2: see 7.1.35 in the lane2 spec */
+		spin_lock_irqsave(&priv->lec_arp_lock, flags);
+                entry = lec_arp_find(priv, mesg->content.normal.mac_addr);
+                lec_arp_remove(priv, entry);
+		spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+
+                if (mesg->content.normal.no_source_le_narp)
+                        break;
+                /* FALL THROUGH */
+        case l_arp_update:
+                lec_arp_update(priv, mesg->content.normal.mac_addr,
+                               mesg->content.normal.atm_addr,
+                               mesg->content.normal.flag,
+                               mesg->content.normal.targetless_le_arp);
+                DPRINTK("lec: in l_arp_update\n");
+                if (mesg->sizeoftlvs != 0) { /* LANE2 3.1.5 */
+                        DPRINTK("lec: LANE2 3.1.5, got tlvs, size %d\n", mesg->sizeoftlvs);
+                        lane2_associate_ind(dev,
+                                            mesg->content.normal.mac_addr,
+                                            tmp, mesg->sizeoftlvs);
+                }
+                break;
+        case l_config:
+                priv->maximum_unknown_frame_count = 
+                        mesg->content.config.maximum_unknown_frame_count;
+                priv->max_unknown_frame_time = 
+                        (mesg->content.config.max_unknown_frame_time*HZ);
+                priv->max_retry_count = 
+                        mesg->content.config.max_retry_count;
+                priv->aging_time = (mesg->content.config.aging_time*HZ);
+                priv->forward_delay_time = 
+                        (mesg->content.config.forward_delay_time*HZ);
+                priv->arp_response_time = 
+                        (mesg->content.config.arp_response_time*HZ);
+                priv->flush_timeout = (mesg->content.config.flush_timeout*HZ);
+                priv->path_switching_delay = 
+                        (mesg->content.config.path_switching_delay*HZ);
+                priv->lane_version = mesg->content.config.lane_version; /* LANE2 */
+		priv->lane2_ops = NULL;
+		if (priv->lane_version > 1)
+			priv->lane2_ops = &lane2_ops;
+		if (dev->change_mtu(dev, mesg->content.config.mtu))
+			printk("%s: change_mtu to %d failed\n", dev->name,
+			    mesg->content.config.mtu);
+		priv->is_proxy = mesg->content.config.is_proxy;
+                break;
+        case l_flush_tran_id:
+                lec_set_flush_tran_id(priv, mesg->content.normal.atm_addr,
+                                      mesg->content.normal.flag);
+                break;
+        case l_set_lecid:
+                priv->lecid=(unsigned short)(0xffff&mesg->content.normal.flag);
+                break;
+        case l_should_bridge: {
+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
+                struct net_bridge_fdb_entry *f;
+
+                DPRINTK("%s: bridge zeppelin asks about 0x%02x:%02x:%02x:%02x:%02x:%02x\n",
+                        dev->name,
+                        mesg->content.proxy.mac_addr[0], mesg->content.proxy.mac_addr[1],
+                        mesg->content.proxy.mac_addr[2], mesg->content.proxy.mac_addr[3],
+                        mesg->content.proxy.mac_addr[4], mesg->content.proxy.mac_addr[5]);
+
+                if (br_fdb_get_hook == NULL || dev->br_port == NULL)
+                        break;
+
+                f = br_fdb_get_hook(dev->br_port->br, mesg->content.proxy.mac_addr);
+                if (f != NULL &&
+                    f->dst->dev != dev &&
+                    f->dst->state == BR_STATE_FORWARDING) {
+                                /* hit from bridge table, send LE_ARP_RESPONSE */
+                        struct sk_buff *skb2;
+			struct sock *sk;
+
+                        DPRINTK("%s: entry found, responding to zeppelin\n", dev->name);
+                        skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
+                        if (skb2 == NULL) {
+                                br_fdb_put_hook(f);
+                                break;
+                        }
+                        skb2->len = sizeof(struct atmlec_msg);
+                        memcpy(skb2->data, mesg, sizeof(struct atmlec_msg));
+                        atm_force_charge(priv->lecd, skb2->truesize);
+			sk = sk_atm(priv->lecd);
+                        skb_queue_tail(&sk->sk_receive_queue, skb2);
+                        sk->sk_data_ready(sk, skb2->len);
+                }
+                if (f != NULL) br_fdb_put_hook(f);
+#endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */
+                }
+                break;
+        default:
+                printk("%s: Unknown message type %d\n", dev->name, mesg->type);
+                dev_kfree_skb(skb);
+                return -EINVAL;
+        }
+        dev_kfree_skb(skb);
+        return 0;
+}
+
+static void 
+lec_atm_close(struct atm_vcc *vcc)
+{
+        struct sk_buff *skb;
+        struct net_device *dev = (struct net_device *)vcc->proto_data;
+        struct lec_priv *priv = (struct lec_priv *)dev->priv;
+
+        priv->lecd = NULL;
+        /* Do something needful? */
+
+        netif_stop_queue(dev);
+        lec_arp_destroy(priv);
+
+        if (skb_peek(&sk_atm(vcc)->sk_receive_queue))
+		printk("%s lec_atm_close: closing with messages pending\n",
+                       dev->name);
+        while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue)) != NULL) {
+                atm_return(vcc, skb->truesize);
+		dev_kfree_skb(skb);
+        }
+  
+	printk("%s: Shut down!\n", dev->name);
+        module_put(THIS_MODULE);
+}
+
+static struct atmdev_ops lecdev_ops = {
+        .close	= lec_atm_close,
+        .send	= lec_atm_send
+};
+
+static struct atm_dev lecatm_dev = {
+	.ops	= &lecdev_ops,
+	.type	= "lec",
+	.number	= 999,	/* dummy device number */
+	.lock	= SPIN_LOCK_UNLOCKED
+};
+
+/*
+ * LANE2: new argument struct sk_buff *data contains
+ * the LE_ARP based TLVs introduced in the LANE2 spec
+ */
+static int 
+send_to_lecd(struct lec_priv *priv, atmlec_msg_type type, 
+             unsigned char *mac_addr, unsigned char *atm_addr,
+             struct sk_buff *data)
+{
+	struct sock *sk;
+	struct sk_buff *skb;
+	struct atmlec_msg *mesg;
+
+	if (!priv || !priv->lecd) {
+		return -1;
+	}
+	skb = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
+	if (!skb)
+		return -1;
+	skb->len = sizeof(struct atmlec_msg);
+	mesg = (struct atmlec_msg *)skb->data;
+        memset(mesg, 0, sizeof(struct atmlec_msg));
+	mesg->type = type;
+        if (data != NULL)
+                mesg->sizeoftlvs = data->len;
+	if (mac_addr)
+		memcpy(&mesg->content.normal.mac_addr, mac_addr, ETH_ALEN);
+        else
+                mesg->content.normal.targetless_le_arp = 1;
+	if (atm_addr)
+		memcpy(&mesg->content.normal.atm_addr, atm_addr, ATM_ESA_LEN);
+
+        atm_force_charge(priv->lecd, skb->truesize);
+	sk = sk_atm(priv->lecd);
+	skb_queue_tail(&sk->sk_receive_queue, skb);
+        sk->sk_data_ready(sk, skb->len);
+
+        if (data != NULL) {
+                DPRINTK("lec: about to send %d bytes of data\n", data->len);
+                atm_force_charge(priv->lecd, data->truesize);
+                skb_queue_tail(&sk->sk_receive_queue, data);
+                sk->sk_data_ready(sk, skb->len);
+        }
+
+        return 0;
+}
+
+/* shamelessly stolen from drivers/net/net_init.c */
+static int lec_change_mtu(struct net_device *dev, int new_mtu)
+{
+        if ((new_mtu < 68) || (new_mtu > 18190))
+                return -EINVAL;
+        dev->mtu = new_mtu;
+        return 0;
+}
+
+static void lec_set_multicast_list(struct net_device *dev)
+{
+	/* by default, all multicast frames arrive over the bus.
+         * eventually support selective multicast service
+         */
+        return;
+}
+
+static void 
+lec_init(struct net_device *dev)
+{
+        dev->change_mtu = lec_change_mtu;
+        dev->open = lec_open;
+        dev->stop = lec_close;
+        dev->hard_start_xmit = lec_start_xmit;
+	dev->tx_timeout = lec_tx_timeout;
+
+        dev->get_stats = lec_get_stats;
+        dev->set_multicast_list = lec_set_multicast_list;
+        dev->do_ioctl  = NULL;
+        printk("%s: Initialized!\n",dev->name);
+        return;
+}
+
+static unsigned char lec_ctrl_magic[] = {
+        0xff,
+        0x00,
+        0x01,
+        0x01 };
+
+static void 
+lec_push(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+        struct net_device *dev = (struct net_device *)vcc->proto_data;
+        struct lec_priv *priv = (struct lec_priv *)dev->priv; 
+
+#if DUMP_PACKETS >0
+        int i=0;
+        char buf[300];
+
+        printk("%s: lec_push vcc vpi:%d vci:%d\n", dev->name,
+               vcc->vpi, vcc->vci);
+#endif
+        if (!skb) {
+                DPRINTK("%s: null skb\n",dev->name);
+                lec_vcc_close(priv, vcc);
+                return;
+        }
+#if DUMP_PACKETS > 0
+        printk("%s: rcv datalen:%ld lecid:%4.4x\n", dev->name,
+               skb->len, priv->lecid);
+#if DUMP_PACKETS >= 2
+        for(i=0;i<skb->len && i <99;i++) {
+                sprintf(buf+i*3,"%2.2x ",0xff&skb->data[i]);
+        }
+#elif DUMP_PACKETS >= 1
+        for(i=0;i<skb->len && i < 30;i++) {
+                sprintf(buf+i*3,"%2.2x ", 0xff&skb->data[i]);
+        }
+#endif /* DUMP_PACKETS >= 1 */
+        if (i==skb->len)
+                printk("%s\n",buf);
+        else
+                printk("%s...\n",buf);
+#endif /* DUMP_PACKETS > 0 */
+        if (memcmp(skb->data, lec_ctrl_magic, 4) ==0) { /* Control frame, to daemon*/
+		struct sock *sk = sk_atm(vcc);
+
+                DPRINTK("%s: To daemon\n",dev->name);
+                skb_queue_tail(&sk->sk_receive_queue, skb);
+                sk->sk_data_ready(sk, skb->len);
+        } else { /* Data frame, queue to protocol handlers */
+                unsigned char *dst;
+
+                atm_return(vcc,skb->truesize);
+                if (*(uint16_t *)skb->data == htons(priv->lecid) ||
+                    !priv->lecd ||
+                    !(dev->flags & IFF_UP)) { 
+                        /* Probably looping back, or if lecd is missing,
+                           lecd has gone down */
+                        DPRINTK("Ignoring frame...\n");
+                        dev_kfree_skb(skb);
+                        return;
+                }
+#ifdef CONFIG_TR
+                if (priv->is_trdev) dst = ((struct lecdatahdr_8025 *)skb->data)->h_dest;
+                else
+#endif
+                dst = ((struct lecdatahdr_8023 *)skb->data)->h_dest;
+
+                if (!(dst[0]&0x01) &&   /* Never filter Multi/Broadcast */
+                    !priv->is_proxy &&  /* Proxy wants all the packets */
+		    memcmp(dst, dev->dev_addr, dev->addr_len)) {
+                        dev_kfree_skb(skb);
+                        return;
+                }
+                if (priv->lec_arp_empty_ones) {
+                        lec_arp_check_empties(priv, vcc, skb);
+                }
+                skb->dev = dev;
+                skb_pull(skb, 2); /* skip lec_id */
+#ifdef CONFIG_TR
+                if (priv->is_trdev) skb->protocol = tr_type_trans(skb, dev);
+                else
+#endif
+                skb->protocol = eth_type_trans(skb, dev);
+                priv->stats.rx_packets++;
+                priv->stats.rx_bytes += skb->len;
+                memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
+                netif_rx(skb);
+        }
+}
+
+static void
+lec_pop(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+	struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
+	struct net_device *dev = skb->dev;
+
+	if (vpriv == NULL) {
+		printk("lec_pop(): vpriv = NULL!?!?!?\n");
+		return;
+	}
+
+	vpriv->old_pop(vcc, skb);
+
+	if (vpriv->xoff && atm_may_send(vcc, 0)) {
+		vpriv->xoff = 0;
+		if (netif_running(dev) && netif_queue_stopped(dev))
+			netif_wake_queue(dev);
+	}
+}
+
+static int 
+lec_vcc_attach(struct atm_vcc *vcc, void __user *arg)
+{
+	struct lec_vcc_priv *vpriv;
+        int bytes_left;
+        struct atmlec_ioc ioc_data;
+
+        /* Lecd must be up in this case */
+        bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmlec_ioc));
+        if (bytes_left != 0) {
+                printk("lec: lec_vcc_attach, copy from user failed for %d bytes\n",
+                       bytes_left);
+        }
+        if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF || 
+            !dev_lec[ioc_data.dev_num])
+                return -EINVAL;
+	if (!(vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL)))
+		return -ENOMEM;
+	vpriv->xoff = 0;
+	vpriv->old_pop = vcc->pop;
+	vcc->user_back = vpriv;
+	vcc->pop = lec_pop;
+        lec_vcc_added(dev_lec[ioc_data.dev_num]->priv, 
+                      &ioc_data, vcc, vcc->push);
+        vcc->proto_data = dev_lec[ioc_data.dev_num];
+        vcc->push = lec_push;
+        return 0;
+}
+
+static int 
+lec_mcast_attach(struct atm_vcc *vcc, int arg)
+{
+        if (arg <0 || arg >= MAX_LEC_ITF || !dev_lec[arg])
+                return -EINVAL;
+        vcc->proto_data = dev_lec[arg];
+        return (lec_mcast_make((struct lec_priv*)dev_lec[arg]->priv, vcc));
+}
+
+/* Initialize device. */
+static int 
+lecd_attach(struct atm_vcc *vcc, int arg)
+{  
+        int i;
+        struct lec_priv *priv;
+
+        if (arg<0)
+                i = 0;
+        else
+                i = arg;
+#ifdef CONFIG_TR
+        if (arg >= MAX_LEC_ITF)
+                return -EINVAL;
+#else /* Reserve the top NUM_TR_DEVS for TR */
+        if (arg >= (MAX_LEC_ITF-NUM_TR_DEVS))
+                return -EINVAL;
+#endif
+        if (!dev_lec[i]) {
+                int is_trdev, size;
+
+                is_trdev = 0;
+                if (i >= (MAX_LEC_ITF - NUM_TR_DEVS))
+                        is_trdev = 1;
+
+                size = sizeof(struct lec_priv);
+#ifdef CONFIG_TR
+                if (is_trdev)
+                        dev_lec[i] = alloc_trdev(size);
+                else
+#endif
+                dev_lec[i] = alloc_etherdev(size);
+                if (!dev_lec[i])
+                        return -ENOMEM;
+                snprintf(dev_lec[i]->name, IFNAMSIZ, "lec%d", i);
+                if (register_netdev(dev_lec[i])) {
+                        free_netdev(dev_lec[i]);
+                        return -EINVAL;
+                }
+
+                priv = dev_lec[i]->priv;
+                priv->is_trdev = is_trdev;
+                lec_init(dev_lec[i]);
+        } else {
+                priv = dev_lec[i]->priv;
+                if (priv->lecd)
+                        return -EADDRINUSE;
+        }
+        lec_arp_init(priv);
+	priv->itfnum = i;  /* LANE2 addition */
+        priv->lecd = vcc;
+        vcc->dev = &lecatm_dev;
+        vcc_insert_socket(sk_atm(vcc));
+        
+        vcc->proto_data = dev_lec[i];
+	set_bit(ATM_VF_META,&vcc->flags);
+	set_bit(ATM_VF_READY,&vcc->flags);
+
+        /* Set default values to these variables */
+        priv->maximum_unknown_frame_count = 1;
+        priv->max_unknown_frame_time = (1*HZ);
+        priv->vcc_timeout_period = (1200*HZ);
+        priv->max_retry_count = 1;
+        priv->aging_time = (300*HZ);
+        priv->forward_delay_time = (15*HZ);
+        priv->topology_change = 0;
+        priv->arp_response_time = (1*HZ);
+        priv->flush_timeout = (4*HZ);
+        priv->path_switching_delay = (6*HZ);
+
+        if (dev_lec[i]->flags & IFF_UP) {
+                netif_start_queue(dev_lec[i]);
+        }
+        __module_get(THIS_MODULE);
+        return i;
+}
+
+#ifdef CONFIG_PROC_FS
+static char* lec_arp_get_status_string(unsigned char status)
+{
+	static char *lec_arp_status_string[] = {
+		"ESI_UNKNOWN       ",
+		"ESI_ARP_PENDING   ",
+		"ESI_VC_PENDING    ",
+		"<Undefined>       ",
+		"ESI_FLUSH_PENDING ",
+		"ESI_FORWARD_DIRECT"
+	};
+
+	if (status > ESI_FORWARD_DIRECT)
+		status = 3;	/* ESI_UNDEFINED */
+	return lec_arp_status_string[status];
+}
+
+static void lec_info(struct seq_file *seq, struct lec_arp_table *entry)
+{
+	int i;
+
+	for (i = 0; i < ETH_ALEN; i++)
+		seq_printf(seq, "%2.2x", entry->mac_addr[i] & 0xff);
+	seq_printf(seq, " ");
+	for (i = 0; i < ATM_ESA_LEN; i++)
+		seq_printf(seq, "%2.2x", entry->atm_addr[i] & 0xff);
+	seq_printf(seq, " %s %4.4x", lec_arp_get_status_string(entry->status),
+		   entry->flags & 0xffff);
+	if (entry->vcc)
+		seq_printf(seq, "%3d %3d ", entry->vcc->vpi, entry->vcc->vci);
+	else
+	        seq_printf(seq, "        ");
+	if (entry->recv_vcc) {
+		seq_printf(seq, "     %3d %3d", entry->recv_vcc->vpi,
+			   entry->recv_vcc->vci);
+        }
+        seq_putc(seq, '\n');
+}
+
+
+struct lec_state {
+	unsigned long flags;
+	struct lec_priv *locked;
+	struct lec_arp_table *entry;
+	struct net_device *dev;
+	int itf;
+	int arp_table;
+	int misc_table;
+};
+
+static void *lec_tbl_walk(struct lec_state *state, struct lec_arp_table *tbl,
+			  loff_t *l)
+{
+	struct lec_arp_table *e = state->entry;
+
+	if (!e)
+		e = tbl;
+	if (e == (void *)1) {
+		e = tbl;
+		--*l;
+	}
+	for (; e; e = e->next) {
+		if (--*l < 0)
+			break;
+	}
+	state->entry = e;
+	return (*l < 0) ? state : NULL;
+}
+
+static void *lec_arp_walk(struct lec_state *state, loff_t *l,
+			      struct lec_priv *priv)
+{
+	void *v = NULL;
+	int p;
+
+	for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) {
+		v = lec_tbl_walk(state, priv->lec_arp_tables[p], l);
+		if (v)
+			break;
+	}
+	state->arp_table = p;
+	return v;
+}
+
+static void *lec_misc_walk(struct lec_state *state, loff_t *l,
+			   struct lec_priv *priv)
+{
+	struct lec_arp_table *lec_misc_tables[] = {
+		priv->lec_arp_empty_ones,
+		priv->lec_no_forward,
+		priv->mcast_fwds
+	};
+	void *v = NULL;
+	int q;
+
+	for (q = state->misc_table; q < ARRAY_SIZE(lec_misc_tables); q++) {
+		v = lec_tbl_walk(state, lec_misc_tables[q], l);
+		if (v)
+			break;
+	}
+	state->misc_table = q;
+	return v;
+}
+
+static void *lec_priv_walk(struct lec_state *state, loff_t *l,
+			   struct lec_priv *priv)
+{
+	if (!state->locked) {
+		state->locked = priv;
+		spin_lock_irqsave(&priv->lec_arp_lock, state->flags);
+	}
+	if (!lec_arp_walk(state, l, priv) &&
+	    !lec_misc_walk(state, l, priv)) {
+		spin_unlock_irqrestore(&priv->lec_arp_lock, state->flags);
+		state->locked = NULL;
+		/* Partial state reset for the next time we get called */
+		state->arp_table = state->misc_table = 0;
+	}
+	return state->locked;
+}
+
+static void *lec_itf_walk(struct lec_state *state, loff_t *l)
+{
+	struct net_device *dev;
+	void *v;
+
+	dev = state->dev ? state->dev : dev_lec[state->itf];
+	v = (dev && dev->priv) ? lec_priv_walk(state, l, dev->priv) : NULL;
+	if (!v && dev) {
+		dev_put(dev);
+		/* Partial state reset for the next time we get called */
+		dev = NULL;
+	}
+	state->dev = dev;
+	return v;
+}
+
+static void *lec_get_idx(struct lec_state *state, loff_t l)
+{
+	void *v = NULL;
+
+	for (; state->itf < MAX_LEC_ITF; state->itf++) {
+		v = lec_itf_walk(state, &l);
+		if (v)
+			break;
+	}
+	return v; 
+}
+
+static void *lec_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	struct lec_state *state = seq->private;
+
+	state->itf = 0;
+	state->dev = NULL;
+	state->locked = NULL;
+	state->arp_table = 0;
+	state->misc_table = 0;
+	state->entry = (void *)1;
+
+	return *pos ? lec_get_idx(state, *pos) : (void*)1;
+}
+
+static void lec_seq_stop(struct seq_file *seq, void *v)
+{
+	struct lec_state *state = seq->private;
+
+	if (state->dev) {
+		spin_unlock_irqrestore(&state->locked->lec_arp_lock,
+				       state->flags);
+		dev_put(state->dev);
+	}
+}
+
+static void *lec_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct lec_state *state = seq->private;
+
+	v = lec_get_idx(state, 1);
+	*pos += !!PTR_ERR(v);
+	return v;
+}
+
+static int lec_seq_show(struct seq_file *seq, void *v)
+{
+	static char lec_banner[] = "Itf  MAC          ATM destination" 
+		"                          Status            Flags "
+		"VPI/VCI Recv VPI/VCI\n";
+
+	if (v == (void *)1)
+		seq_puts(seq, lec_banner);
+	else {
+		struct lec_state *state = seq->private;
+		struct net_device *dev = state->dev; 
+
+		seq_printf(seq, "%s ", dev->name);
+		lec_info(seq, state->entry);
+	}
+	return 0;
+}
+
+static struct seq_operations lec_seq_ops = {
+	.start	= lec_seq_start,
+	.next	= lec_seq_next,
+	.stop	= lec_seq_stop,
+	.show	= lec_seq_show,
+};
+
+static int lec_seq_open(struct inode *inode, struct file *file)
+{
+	struct lec_state *state;
+	struct seq_file *seq;
+	int rc = -EAGAIN;
+
+	state = kmalloc(sizeof(*state), GFP_KERNEL);
+	if (!state) {
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	rc = seq_open(file, &lec_seq_ops);
+	if (rc)
+		goto out_kfree;
+	seq = file->private_data;
+	seq->private = state;
+out:
+	return rc;
+
+out_kfree:
+	kfree(state);
+	goto out;
+}
+
+static int lec_seq_release(struct inode *inode, struct file *file)
+{
+	return seq_release_private(inode, file);
+}
+
+static struct file_operations lec_seq_fops = {
+	.owner		= THIS_MODULE,
+	.open		= lec_seq_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= lec_seq_release,
+};
+#endif
+
+static int lane_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	struct atm_vcc *vcc = ATM_SD(sock);
+	int err = 0;
+	
+	switch (cmd) {
+		case ATMLEC_CTRL: 
+		case ATMLEC_MCAST:
+		case ATMLEC_DATA:
+			if (!capable(CAP_NET_ADMIN))
+				return -EPERM;
+			break;
+		default:
+			return -ENOIOCTLCMD;
+	}
+
+	switch (cmd) {
+		case ATMLEC_CTRL:
+			err = lecd_attach(vcc, (int) arg);
+			if (err >= 0)
+				sock->state = SS_CONNECTED;
+			break;
+		case ATMLEC_MCAST:
+			err = lec_mcast_attach(vcc, (int) arg);
+			break;
+		case ATMLEC_DATA:
+			err = lec_vcc_attach(vcc, (void __user *) arg);
+			break;
+	}
+
+	return err;
+}
+
+static struct atm_ioctl lane_ioctl_ops = {
+	.owner  = THIS_MODULE,
+	.ioctl  = lane_ioctl,
+};
+
+static int __init lane_module_init(void)
+{
+#ifdef CONFIG_PROC_FS
+	struct proc_dir_entry *p;
+
+	p = create_proc_entry("lec", S_IRUGO, atm_proc_root);
+	if (p)
+		p->proc_fops = &lec_seq_fops;
+#endif
+
+	register_atm_ioctl(&lane_ioctl_ops);
+        printk("lec.c: " __DATE__ " " __TIME__ " initialized\n");
+        return 0;
+}
+
+static void __exit lane_module_cleanup(void)
+{
+        int i;
+        struct lec_priv *priv;
+
+	remove_proc_entry("lec", atm_proc_root);
+
+	deregister_atm_ioctl(&lane_ioctl_ops);
+
+        for (i = 0; i < MAX_LEC_ITF; i++) {
+                if (dev_lec[i] != NULL) {
+                        priv = (struct lec_priv *)dev_lec[i]->priv;
+			unregister_netdev(dev_lec[i]);
+                        free_netdev(dev_lec[i]);
+                        dev_lec[i] = NULL;
+                }
+        }
+
+        return;                                    
+}
+
+module_init(lane_module_init);
+module_exit(lane_module_cleanup);
+
+/*
+ * LANE2: 3.1.3, LE_RESOLVE.request
+ * Non force allocates memory and fills in *tlvs, fills in *sizeoftlvs.
+ * If sizeoftlvs == NULL the default TLVs associated with with this
+ * lec will be used.
+ * If dst_mac == NULL, targetless LE_ARP will be sent
+ */
+static int lane2_resolve(struct net_device *dev, u8 *dst_mac, int force,
+    u8 **tlvs, u32 *sizeoftlvs)
+{
+	unsigned long flags;
+        struct lec_priv *priv = (struct lec_priv *)dev->priv;
+        struct lec_arp_table *table;
+        struct sk_buff *skb;
+        int retval;
+
+        if (force == 0) {
+		spin_lock_irqsave(&priv->lec_arp_lock, flags);
+                table = lec_arp_find(priv, dst_mac);
+		spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+                if(table == NULL)
+                        return -1;
+                
+                *tlvs = kmalloc(table->sizeoftlvs, GFP_ATOMIC);
+                if (*tlvs == NULL)
+                        return -1;
+                
+                memcpy(*tlvs, table->tlvs, table->sizeoftlvs);
+                *sizeoftlvs = table->sizeoftlvs;
+                
+                return 0;
+        }
+
+	if (sizeoftlvs == NULL)
+		retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, NULL);
+		
+	else {
+		skb = alloc_skb(*sizeoftlvs, GFP_ATOMIC);
+		if (skb == NULL)
+			return -1;
+		skb->len = *sizeoftlvs;
+		memcpy(skb->data, *tlvs, *sizeoftlvs);
+		retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, skb);
+	}
+        return retval;
+}        
+
+
+/*
+ * LANE2: 3.1.4, LE_ASSOCIATE.request
+ * Associate the *tlvs with the *lan_dst address.
+ * Will overwrite any previous association
+ * Returns 1 for success, 0 for failure (out of memory)
+ *
+ */
+static int lane2_associate_req (struct net_device *dev, u8 *lan_dst,
+                         u8 *tlvs, u32 sizeoftlvs)
+{
+        int retval;
+        struct sk_buff *skb;
+        struct lec_priv *priv = (struct lec_priv*)dev->priv;
+
+        if ( memcmp(lan_dst, dev->dev_addr, ETH_ALEN) != 0 )
+                return (0);       /* not our mac address */
+
+        kfree(priv->tlvs); /* NULL if there was no previous association */
+
+        priv->tlvs = kmalloc(sizeoftlvs, GFP_KERNEL);
+        if (priv->tlvs == NULL)
+                return (0);
+        priv->sizeoftlvs = sizeoftlvs;
+        memcpy(priv->tlvs, tlvs, sizeoftlvs);
+
+        skb = alloc_skb(sizeoftlvs, GFP_ATOMIC);
+        if (skb == NULL)
+                return 0;
+        skb->len = sizeoftlvs;
+        memcpy(skb->data, tlvs, sizeoftlvs);
+        retval = send_to_lecd(priv, l_associate_req, NULL, NULL, skb);
+        if (retval != 0)
+                printk("lec.c: lane2_associate_req() failed\n");
+        /* If the previous association has changed we must
+         * somehow notify other LANE entities about the change
+         */
+        return (1);
+}
+
+/*
+ * LANE2: 3.1.5, LE_ASSOCIATE.indication
+ *
+ */
+static void lane2_associate_ind (struct net_device *dev, u8 *mac_addr,
+    u8 *tlvs, u32 sizeoftlvs)
+{
+#if 0
+        int i = 0;
+#endif
+	struct lec_priv *priv = (struct lec_priv *)dev->priv;
+#if 0 /* Why have the TLVs in LE_ARP entries since we do not use them? When you
+         uncomment this code, make sure the TLVs get freed when entry is killed */
+        struct lec_arp_table *entry = lec_arp_find(priv, mac_addr);
+
+        if (entry == NULL)
+                return;     /* should not happen */
+
+        kfree(entry->tlvs);
+
+        entry->tlvs = kmalloc(sizeoftlvs, GFP_KERNEL);
+        if (entry->tlvs == NULL)
+                return;
+
+        entry->sizeoftlvs = sizeoftlvs;
+        memcpy(entry->tlvs, tlvs, sizeoftlvs);
+#endif
+#if 0
+        printk("lec.c: lane2_associate_ind()\n");
+        printk("dump of tlvs, sizeoftlvs=%d\n", sizeoftlvs);
+        while (i < sizeoftlvs)
+                printk("%02x ", tlvs[i++]);
+        
+        printk("\n");
+#endif
+
+        /* tell MPOA about the TLVs we saw */
+        if (priv->lane2_ops && priv->lane2_ops->associate_indicator) {
+                priv->lane2_ops->associate_indicator(dev, mac_addr,
+                                                     tlvs, sizeoftlvs);
+        }
+        return;
+}
+
+/*
+ * Here starts what used to lec_arpc.c
+ *
+ * lec_arpc.c was added here when making
+ * lane client modular. October 1997
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <asm/param.h>
+#include <asm/atomic.h>
+#include <linux/inetdevice.h>
+#include <net/route.h>
+
+
+#if 0
+#define DPRINTK(format,args...)
+/*
+#define DPRINTK printk
+*/
+#endif
+#define DEBUG_ARP_TABLE 0
+
+#define LEC_ARP_REFRESH_INTERVAL (3*HZ)
+
+static void lec_arp_check_expire(unsigned long data);
+static void lec_arp_expire_arp(unsigned long data);
+
+/* 
+ * Arp table funcs
+ */
+
+#define HASH(ch) (ch & (LEC_ARP_TABLE_SIZE -1))
+
+/*
+ * Initialization of arp-cache
+ */
+static void 
+lec_arp_init(struct lec_priv *priv)
+{
+        unsigned short i;
+
+        for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                priv->lec_arp_tables[i] = NULL;
+        }        
+	spin_lock_init(&priv->lec_arp_lock);
+        init_timer(&priv->lec_arp_timer);
+        priv->lec_arp_timer.expires = jiffies + LEC_ARP_REFRESH_INTERVAL;
+        priv->lec_arp_timer.data = (unsigned long)priv;
+        priv->lec_arp_timer.function = lec_arp_check_expire;
+        add_timer(&priv->lec_arp_timer);
+}
+
+static void
+lec_arp_clear_vccs(struct lec_arp_table *entry)
+{
+        if (entry->vcc) {
+		struct atm_vcc *vcc = entry->vcc;
+		struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
+		struct net_device *dev = (struct net_device*) vcc->proto_data;
+
+                vcc->pop = vpriv->old_pop;
+		if (vpriv->xoff)
+			netif_wake_queue(dev);
+		kfree(vpriv);
+		vcc->user_back = NULL;
+                vcc->push = entry->old_push;
+		vcc_release_async(vcc, -EPIPE);
+                vcc = NULL;
+        }
+        if (entry->recv_vcc) {
+                entry->recv_vcc->push = entry->old_recv_push;
+		vcc_release_async(entry->recv_vcc, -EPIPE);
+                entry->recv_vcc = NULL;
+        }        
+}
+
+/*
+ * Insert entry to lec_arp_table
+ * LANE2: Add to the end of the list to satisfy 8.1.13
+ */
+static inline void 
+lec_arp_add(struct lec_priv *priv, struct lec_arp_table *to_add)
+{
+        unsigned short place;
+        struct lec_arp_table *tmp;
+
+        place = HASH(to_add->mac_addr[ETH_ALEN-1]);
+        tmp = priv->lec_arp_tables[place];
+        to_add->next = NULL;
+        if (tmp == NULL)
+                priv->lec_arp_tables[place] = to_add;
+  
+        else {  /* add to the end */
+                while (tmp->next)
+                        tmp = tmp->next;
+                tmp->next = to_add;
+        }
+
+        DPRINTK("LEC_ARP: Added entry:%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n",
+                0xff&to_add->mac_addr[0], 0xff&to_add->mac_addr[1],
+                0xff&to_add->mac_addr[2], 0xff&to_add->mac_addr[3],
+                0xff&to_add->mac_addr[4], 0xff&to_add->mac_addr[5]);
+}
+
+/*
+ * Remove entry from lec_arp_table
+ */
+static int 
+lec_arp_remove(struct lec_priv *priv,
+               struct lec_arp_table *to_remove)
+{
+        unsigned short place;
+        struct lec_arp_table *tmp;
+        int remove_vcc=1;
+
+        if (!to_remove) {
+                return -1;
+        }
+        place = HASH(to_remove->mac_addr[ETH_ALEN-1]);
+        tmp = priv->lec_arp_tables[place];
+        if (tmp == to_remove) {
+                priv->lec_arp_tables[place] = tmp->next;
+        } else {
+                while(tmp && tmp->next != to_remove) {
+                        tmp = tmp->next;
+                }
+                if (!tmp) {/* Entry was not found */
+                        return -1;
+                }
+        }
+        tmp->next = to_remove->next;
+        del_timer(&to_remove->timer);
+  
+        /* If this is the only MAC connected to this VCC, also tear down
+           the VCC */
+        if (to_remove->status >= ESI_FLUSH_PENDING) {
+                /*
+                 * ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT
+                 */
+                for(place = 0; place < LEC_ARP_TABLE_SIZE; place++) {
+                        for(tmp = priv->lec_arp_tables[place]; tmp != NULL; tmp = tmp->next) {
+                                if (memcmp(tmp->atm_addr, to_remove->atm_addr,
+                                           ATM_ESA_LEN)==0) {
+                                        remove_vcc=0;
+                                        break;
+                                }
+                        }
+                }
+                if (remove_vcc)
+                        lec_arp_clear_vccs(to_remove);
+        }
+        skb_queue_purge(&to_remove->tx_wait); /* FIXME: good place for this? */
+
+        DPRINTK("LEC_ARP: Removed entry:%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n",
+                0xff&to_remove->mac_addr[0], 0xff&to_remove->mac_addr[1],
+                0xff&to_remove->mac_addr[2], 0xff&to_remove->mac_addr[3],
+                0xff&to_remove->mac_addr[4], 0xff&to_remove->mac_addr[5]);
+        return 0;
+}
+
+#if DEBUG_ARP_TABLE
+static char*
+get_status_string(unsigned char st)
+{
+        switch(st) {
+        case ESI_UNKNOWN:
+                return "ESI_UNKNOWN";
+        case ESI_ARP_PENDING:
+                return "ESI_ARP_PENDING";
+        case ESI_VC_PENDING:
+                return "ESI_VC_PENDING";
+        case ESI_FLUSH_PENDING:
+                return "ESI_FLUSH_PENDING";
+        case ESI_FORWARD_DIRECT:
+                return "ESI_FORWARD_DIRECT";
+        default:
+                return "<UNKNOWN>";
+        }
+}
+#endif
+
+static void
+dump_arp_table(struct lec_priv *priv)
+{
+#if DEBUG_ARP_TABLE
+        int i,j, offset;
+        struct lec_arp_table *rulla;
+        char buf[1024];
+        struct lec_arp_table **lec_arp_tables =
+                (struct lec_arp_table **)priv->lec_arp_tables;
+        struct lec_arp_table *lec_arp_empty_ones =
+                (struct lec_arp_table *)priv->lec_arp_empty_ones;
+        struct lec_arp_table *lec_no_forward =
+                (struct lec_arp_table *)priv->lec_no_forward;
+        struct lec_arp_table *mcast_fwds = priv->mcast_fwds;
+
+
+        printk("Dump %p:\n",priv);
+        for (i=0;i<LEC_ARP_TABLE_SIZE;i++) {
+                rulla = lec_arp_tables[i];
+                offset = 0;
+                offset += sprintf(buf,"%d: %p\n",i, rulla);
+                while (rulla) {
+                        offset += sprintf(buf+offset,"Mac:");
+                        for(j=0;j<ETH_ALEN;j++) {
+                                offset+=sprintf(buf+offset,
+                                                "%2.2x ",
+                                                rulla->mac_addr[j]&0xff);
+                        }
+                        offset +=sprintf(buf+offset,"Atm:");
+                        for(j=0;j<ATM_ESA_LEN;j++) {
+                                offset+=sprintf(buf+offset,
+                                                "%2.2x ",
+                                                rulla->atm_addr[j]&0xff);
+                        }      
+                        offset+=sprintf(buf+offset,
+                                        "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
+                                        rulla->vcc?rulla->vcc->vpi:0, 
+                                        rulla->vcc?rulla->vcc->vci:0,
+                                        rulla->recv_vcc?rulla->recv_vcc->vpi:0,
+                                        rulla->recv_vcc?rulla->recv_vcc->vci:0,
+                                        rulla->last_used,
+                                        rulla->timestamp, rulla->no_tries);
+                        offset+=sprintf(buf+offset,
+                                        "Flags:%x, Packets_flooded:%x, Status: %s ",
+                                        rulla->flags, rulla->packets_flooded, 
+                                        get_status_string(rulla->status));
+                        offset+=sprintf(buf+offset,"->%p\n",rulla->next);
+                        rulla = rulla->next;
+                }
+                printk("%s",buf);
+        }
+        rulla = lec_no_forward;
+        if (rulla)
+                printk("No forward\n");  
+        while(rulla) {
+                offset=0;
+                offset += sprintf(buf+offset,"Mac:");
+                for(j=0;j<ETH_ALEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->mac_addr[j]&0xff);
+                }
+                offset +=sprintf(buf+offset,"Atm:");
+                for(j=0;j<ATM_ESA_LEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->atm_addr[j]&0xff);
+                }      
+                offset+=sprintf(buf+offset,
+                                "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
+                                rulla->vcc?rulla->vcc->vpi:0, 
+                                rulla->vcc?rulla->vcc->vci:0, 
+                                rulla->recv_vcc?rulla->recv_vcc->vpi:0,
+                                rulla->recv_vcc?rulla->recv_vcc->vci:0,
+                                rulla->last_used, 
+                                rulla->timestamp, rulla->no_tries);
+                offset+=sprintf(buf+offset,
+                                "Flags:%x, Packets_flooded:%x, Status: %s ",
+                                rulla->flags, rulla->packets_flooded, 
+                                get_status_string(rulla->status));
+                offset+=sprintf(buf+offset,"->%lx\n",(long)rulla->next);
+                rulla = rulla->next;
+                printk("%s",buf);
+        }
+        rulla = lec_arp_empty_ones;
+        if (rulla)
+                printk("Empty ones\n");  
+        while(rulla) {
+                offset=0;
+                offset += sprintf(buf+offset,"Mac:");
+                for(j=0;j<ETH_ALEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->mac_addr[j]&0xff);
+                }
+                offset +=sprintf(buf+offset,"Atm:");
+                for(j=0;j<ATM_ESA_LEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->atm_addr[j]&0xff);
+                }      
+                offset+=sprintf(buf+offset,
+                                "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
+                                rulla->vcc?rulla->vcc->vpi:0, 
+                                rulla->vcc?rulla->vcc->vci:0, 
+                                rulla->recv_vcc?rulla->recv_vcc->vpi:0,
+                                rulla->recv_vcc?rulla->recv_vcc->vci:0,
+                                rulla->last_used, 
+                                rulla->timestamp, rulla->no_tries);
+                offset+=sprintf(buf+offset,
+                                "Flags:%x, Packets_flooded:%x, Status: %s ",
+                                rulla->flags, rulla->packets_flooded, 
+                                get_status_string(rulla->status));
+                offset+=sprintf(buf+offset,"->%lx\n",(long)rulla->next);
+                rulla = rulla->next;
+                printk("%s",buf);
+        }
+
+        rulla = mcast_fwds;
+        if (rulla)
+                printk("Multicast Forward VCCs\n");  
+        while(rulla) {
+                offset=0;
+                offset += sprintf(buf+offset,"Mac:");
+                for(j=0;j<ETH_ALEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->mac_addr[j]&0xff);
+                }
+                offset +=sprintf(buf+offset,"Atm:");
+                for(j=0;j<ATM_ESA_LEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->atm_addr[j]&0xff);
+                }      
+                offset+=sprintf(buf+offset,
+                                "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
+                                rulla->vcc?rulla->vcc->vpi:0, 
+                                rulla->vcc?rulla->vcc->vci:0, 
+                                rulla->recv_vcc?rulla->recv_vcc->vpi:0,
+                                rulla->recv_vcc?rulla->recv_vcc->vci:0,
+                                rulla->last_used, 
+                                rulla->timestamp, rulla->no_tries);
+                offset+=sprintf(buf+offset,
+                                "Flags:%x, Packets_flooded:%x, Status: %s ",
+                                rulla->flags, rulla->packets_flooded, 
+                                get_status_string(rulla->status));
+                offset+=sprintf(buf+offset,"->%lx\n",(long)rulla->next);
+                rulla = rulla->next;
+                printk("%s",buf);
+        }
+
+#endif
+}
+
+/*
+ * Destruction of arp-cache
+ */
+static void
+lec_arp_destroy(struct lec_priv *priv)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry, *next;
+        int i;
+
+        del_timer_sync(&priv->lec_arp_timer);
+        
+        /*
+         * Remove all entries
+         */
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                for(entry = priv->lec_arp_tables[i]; entry != NULL; entry=next) {
+                        next = entry->next;
+                        lec_arp_remove(priv, entry);
+                        kfree(entry);
+                }
+        }
+        entry = priv->lec_arp_empty_ones;
+        while(entry) {
+                next = entry->next;
+                del_timer_sync(&entry->timer);
+                lec_arp_clear_vccs(entry);
+                kfree(entry);
+                entry = next;
+        }
+        priv->lec_arp_empty_ones = NULL;
+        entry = priv->lec_no_forward;
+        while(entry) {
+                next = entry->next;
+                del_timer_sync(&entry->timer);
+                lec_arp_clear_vccs(entry);
+                kfree(entry);
+                entry = next;
+        }
+        priv->lec_no_forward = NULL;
+        entry = priv->mcast_fwds;
+        while(entry) {
+                next = entry->next;
+                /* No timer, LANEv2 7.1.20 and 2.3.5.3 */
+                lec_arp_clear_vccs(entry);
+                kfree(entry);
+                entry = next;
+        }
+        priv->mcast_fwds = NULL;
+        priv->mcast_vcc = NULL;
+        memset(priv->lec_arp_tables, 0, 
+               sizeof(struct lec_arp_table *) * LEC_ARP_TABLE_SIZE);
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+}
+
+
+/* 
+ * Find entry by mac_address
+ */
+static struct lec_arp_table*
+lec_arp_find(struct lec_priv *priv,
+             unsigned char *mac_addr)
+{
+        unsigned short place;
+        struct lec_arp_table *to_return;
+
+        DPRINTK("LEC_ARP: lec_arp_find :%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n",
+                mac_addr[0]&0xff, mac_addr[1]&0xff, mac_addr[2]&0xff, 
+                mac_addr[3]&0xff, mac_addr[4]&0xff, mac_addr[5]&0xff);
+        place = HASH(mac_addr[ETH_ALEN-1]);
+  
+        to_return = priv->lec_arp_tables[place];
+        while(to_return) {
+                if (memcmp(mac_addr, to_return->mac_addr, ETH_ALEN) == 0) {
+                        return to_return;
+                }
+                to_return = to_return->next;
+        }
+        return NULL;
+}
+
+static struct lec_arp_table*
+make_entry(struct lec_priv *priv, unsigned char *mac_addr)
+{
+        struct lec_arp_table *to_return;
+
+        to_return = (struct lec_arp_table *) kmalloc(sizeof(struct lec_arp_table),
+						     GFP_ATOMIC);
+        if (!to_return) {
+                printk("LEC: Arp entry kmalloc failed\n");
+                return NULL;
+        }
+        memset(to_return, 0, sizeof(struct lec_arp_table));
+        memcpy(to_return->mac_addr, mac_addr, ETH_ALEN);
+        init_timer(&to_return->timer);
+        to_return->timer.function = lec_arp_expire_arp;
+        to_return->timer.data = (unsigned long) to_return;
+        to_return->last_used = jiffies;
+        to_return->priv = priv;
+        skb_queue_head_init(&to_return->tx_wait);
+        return to_return;
+}
+
+/*
+ *
+ * Arp sent timer expired
+ *
+ */
+static void
+lec_arp_expire_arp(unsigned long data)
+{
+        struct lec_arp_table *entry;
+
+        entry = (struct lec_arp_table *)data;
+
+        DPRINTK("lec_arp_expire_arp\n");
+        if (entry->status == ESI_ARP_PENDING) {
+                if (entry->no_tries <= entry->priv->max_retry_count) {
+                        if (entry->is_rdesc)
+                                send_to_lecd(entry->priv, l_rdesc_arp_xmt, entry->mac_addr, NULL, NULL);
+                        else
+                                send_to_lecd(entry->priv, l_arp_xmt, entry->mac_addr, NULL, NULL);
+                        entry->no_tries++;
+                }
+                mod_timer(&entry->timer, jiffies + (1*HZ));
+        }
+}
+
+/*
+ *
+ * Unknown/unused vcc expire, remove associated entry
+ *
+ */
+static void
+lec_arp_expire_vcc(unsigned long data)
+{
+	unsigned long flags;
+        struct lec_arp_table *to_remove = (struct lec_arp_table*)data;
+        struct lec_priv *priv = (struct lec_priv *)to_remove->priv;
+        struct lec_arp_table *entry = NULL;
+
+        del_timer(&to_remove->timer);
+
+        DPRINTK("LEC_ARP %p %p: lec_arp_expire_vcc vpi:%d vci:%d\n",
+                to_remove, priv, 
+                to_remove->vcc?to_remove->recv_vcc->vpi:0,
+                to_remove->vcc?to_remove->recv_vcc->vci:0);
+        DPRINTK("eo:%p nf:%p\n",priv->lec_arp_empty_ones,priv->lec_no_forward);
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        if (to_remove == priv->lec_arp_empty_ones)
+                priv->lec_arp_empty_ones = to_remove->next;
+        else {
+                entry = priv->lec_arp_empty_ones;
+                while (entry && entry->next != to_remove)
+                        entry = entry->next;
+                if (entry)
+                        entry->next = to_remove->next;
+        }
+        if (!entry) {
+                if (to_remove == priv->lec_no_forward) {
+                        priv->lec_no_forward = to_remove->next;
+                } else {
+                        entry = priv->lec_no_forward;
+                        while (entry && entry->next != to_remove)
+                                entry = entry->next;
+                        if (entry)
+                                entry->next = to_remove->next;
+                }
+	}
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+
+        lec_arp_clear_vccs(to_remove);
+        kfree(to_remove);
+}
+
+/*
+ * Expire entries.
+ * 1. Re-set timer
+ * 2. For each entry, delete entries that have aged past the age limit.
+ * 3. For each entry, depending on the status of the entry, perform
+ *    the following maintenance.
+ *    a. If status is ESI_VC_PENDING or ESI_ARP_PENDING then if the
+ *       tick_count is above the max_unknown_frame_time, clear
+ *       the tick_count to zero and clear the packets_flooded counter
+ *       to zero. This supports the packet rate limit per address
+ *       while flooding unknowns.
+ *    b. If the status is ESI_FLUSH_PENDING and the tick_count is greater
+ *       than or equal to the path_switching_delay, change the status
+ *       to ESI_FORWARD_DIRECT. This causes the flush period to end
+ *       regardless of the progress of the flush protocol.
+ */
+static void
+lec_arp_check_expire(unsigned long data)
+{
+	unsigned long flags;
+        struct lec_priv *priv = (struct lec_priv *)data;
+        struct lec_arp_table *entry, *next;
+        unsigned long now;
+        unsigned long time_to_check;
+        int i;
+
+        DPRINTK("lec_arp_check_expire %p\n",priv);
+        DPRINTK("expire: eo:%p nf:%p\n",priv->lec_arp_empty_ones,
+                priv->lec_no_forward);
+	now = jiffies;
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+	for(i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+		for(entry = priv->lec_arp_tables[i]; entry != NULL; ) {
+			if ((entry->flags) & LEC_REMOTE_FLAG && 
+			    priv->topology_change)
+				time_to_check = priv->forward_delay_time;
+			else
+				time_to_check = priv->aging_time;
+
+			DPRINTK("About to expire: %lx - %lx > %lx\n",
+				now,entry->last_used, time_to_check);
+			if( time_after(now, entry->last_used+
+			   time_to_check) && 
+			    !(entry->flags & LEC_PERMANENT_FLAG) &&
+			    !(entry->mac_addr[0] & 0x01) ) { /* LANE2: 7.1.20 */
+				/* Remove entry */
+				DPRINTK("LEC:Entry timed out\n");
+				next = entry->next;      
+				lec_arp_remove(priv, entry);
+				kfree(entry);
+				entry = next;
+			} else {
+				/* Something else */
+				if ((entry->status == ESI_VC_PENDING ||
+				     entry->status == ESI_ARP_PENDING) 
+				    && time_after_eq(now,
+				    entry->timestamp +
+				    priv->max_unknown_frame_time)) {
+					entry->timestamp = jiffies;
+					entry->packets_flooded = 0;
+					if (entry->status == ESI_VC_PENDING)
+						send_to_lecd(priv, l_svc_setup, entry->mac_addr, entry->atm_addr, NULL);
+				}
+				if (entry->status == ESI_FLUSH_PENDING 
+				   &&
+				   time_after_eq(now, entry->timestamp+
+				   priv->path_switching_delay)) {
+					struct sk_buff *skb;
+
+					while ((skb = skb_dequeue(&entry->tx_wait)) != NULL)
+						lec_send(entry->vcc, skb, entry->priv);
+					entry->last_used = jiffies;
+					entry->status = 
+						ESI_FORWARD_DIRECT;
+				}
+				entry = entry->next;
+			}
+		}
+	}
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+
+        mod_timer(&priv->lec_arp_timer, jiffies + LEC_ARP_REFRESH_INTERVAL);
+}
+/*
+ * Try to find vcc where mac_address is attached.
+ * 
+ */
+static struct atm_vcc*
+lec_arp_resolve(struct lec_priv *priv, unsigned char *mac_to_find,
+		int is_rdesc, struct lec_arp_table **ret_entry)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry;
+	struct atm_vcc *found;
+
+        if (mac_to_find[0] & 0x01) {
+                switch (priv->lane_version) {
+                case 1:
+                        return priv->mcast_vcc;
+                        break;
+                case 2:  /* LANE2 wants arp for multicast addresses */
+                        if ( memcmp(mac_to_find, bus_mac, ETH_ALEN) == 0)
+                                return priv->mcast_vcc;
+                        break;
+                default:
+                        break;
+                }
+        }
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        entry = lec_arp_find(priv, mac_to_find);
+  
+        if (entry) {
+                if (entry->status == ESI_FORWARD_DIRECT) {
+                        /* Connection Ok */
+                        entry->last_used = jiffies;
+                        *ret_entry = entry;
+                        found = entry->vcc;
+			goto out;
+                }
+                /* Data direct VC not yet set up, check to see if the unknown
+                   frame count is greater than the limit. If the limit has
+                   not been reached, allow the caller to send packet to
+                   BUS. */
+                if (entry->status != ESI_FLUSH_PENDING &&
+                    entry->packets_flooded<priv->maximum_unknown_frame_count) {
+                        entry->packets_flooded++;
+                        DPRINTK("LEC_ARP: Flooding..\n");
+                        found = priv->mcast_vcc;
+			goto out;
+                }
+		/* We got here because entry->status == ESI_FLUSH_PENDING
+		 * or BUS flood limit was reached for an entry which is
+		 * in ESI_ARP_PENDING or ESI_VC_PENDING state.
+		 */
+                *ret_entry = entry;
+                DPRINTK("lec: entry->status %d entry->vcc %p\n", entry->status, entry->vcc);
+                found = NULL;
+        } else {
+                /* No matching entry was found */
+                entry = make_entry(priv, mac_to_find);
+                DPRINTK("LEC_ARP: Making entry\n");
+                if (!entry) {
+                        found = priv->mcast_vcc;
+			goto out;
+                }
+                lec_arp_add(priv, entry);
+                /* We want arp-request(s) to be sent */
+                entry->packets_flooded =1;
+                entry->status = ESI_ARP_PENDING;
+                entry->no_tries = 1;
+                entry->last_used = entry->timestamp = jiffies;
+                entry->is_rdesc = is_rdesc;
+                if (entry->is_rdesc)
+                        send_to_lecd(priv, l_rdesc_arp_xmt, mac_to_find, NULL, NULL);
+                else
+                        send_to_lecd(priv, l_arp_xmt, mac_to_find, NULL, NULL);
+                entry->timer.expires = jiffies + (1*HZ);
+                entry->timer.function = lec_arp_expire_arp;
+                add_timer(&entry->timer);
+                found = priv->mcast_vcc;
+        }
+
+out:
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+	return found;
+}
+
+static int
+lec_addr_delete(struct lec_priv *priv, unsigned char *atm_addr, 
+                unsigned long permanent)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry, *next;
+        int i;
+
+        DPRINTK("lec_addr_delete\n");
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        for(i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                for(entry = priv->lec_arp_tables[i]; entry != NULL; entry = next) {
+                        next = entry->next;
+                        if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)
+                            && (permanent || 
+                                !(entry->flags & LEC_PERMANENT_FLAG))) {
+				lec_arp_remove(priv, entry);
+                                kfree(entry);
+                        }
+			spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+                        return 0;
+                }
+        }
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+        return -1;
+}
+
+/*
+ * Notifies:  Response to arp_request (atm_addr != NULL) 
+ */
+static void
+lec_arp_update(struct lec_priv *priv, unsigned char *mac_addr,
+               unsigned char *atm_addr, unsigned long remoteflag,
+               unsigned int targetless_le_arp)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry, *tmp;
+        int i;
+
+        DPRINTK("lec:%s", (targetless_le_arp) ? "targetless ": " ");
+        DPRINTK("lec_arp_update mac:%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n",
+                mac_addr[0],mac_addr[1],mac_addr[2],mac_addr[3],
+                mac_addr[4],mac_addr[5]);
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        entry = lec_arp_find(priv, mac_addr);
+        if (entry == NULL && targetless_le_arp)
+                goto out;   /* LANE2: ignore targetless LE_ARPs for which
+                             * we have no entry in the cache. 7.1.30
+                             */
+        if (priv->lec_arp_empty_ones) {
+                entry = priv->lec_arp_empty_ones;
+                if (!memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN)) {
+                        priv->lec_arp_empty_ones = entry->next;
+                } else {
+                        while(entry->next && memcmp(entry->next->atm_addr, 
+                                                    atm_addr, ATM_ESA_LEN))
+                                entry = entry->next;
+                        if (entry->next) {
+                                tmp = entry;
+                                entry = entry->next;
+                                tmp->next = entry->next;
+                        } else
+                                entry = NULL;
+                        
+                }
+                if (entry) {
+                        del_timer(&entry->timer);
+                        tmp = lec_arp_find(priv, mac_addr);
+                        if (tmp) {
+                                del_timer(&tmp->timer);
+                                tmp->status = ESI_FORWARD_DIRECT;
+                                memcpy(tmp->atm_addr, atm_addr, ATM_ESA_LEN);
+                                tmp->vcc = entry->vcc;
+                                tmp->old_push = entry->old_push;
+                                tmp->last_used = jiffies;
+                                del_timer(&entry->timer);
+                                kfree(entry);
+                                entry=tmp;
+                        } else {
+                                entry->status = ESI_FORWARD_DIRECT;
+                                memcpy(entry->mac_addr, mac_addr, ETH_ALEN);
+                                entry->last_used = jiffies;
+                                lec_arp_add(priv, entry);
+                        }
+                        if (remoteflag)
+                                entry->flags|=LEC_REMOTE_FLAG;
+                        else
+                                entry->flags&=~LEC_REMOTE_FLAG;
+                        DPRINTK("After update\n");
+                        dump_arp_table(priv);
+                        goto out;
+                }
+        }
+        entry = lec_arp_find(priv, mac_addr);
+        if (!entry) {
+                entry = make_entry(priv, mac_addr);
+                if (!entry)
+			goto out;
+                entry->status = ESI_UNKNOWN;
+                lec_arp_add(priv, entry);
+                /* Temporary, changes before end of function */
+        }
+        memcpy(entry->atm_addr, atm_addr, ATM_ESA_LEN);
+        del_timer(&entry->timer);
+        for(i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                for(tmp = priv->lec_arp_tables[i]; tmp; tmp=tmp->next) {
+                        if (entry != tmp &&
+                            !memcmp(tmp->atm_addr, atm_addr,
+                                    ATM_ESA_LEN)) { 
+                                /* Vcc to this host exists */
+                                if (tmp->status > ESI_VC_PENDING) {
+                                        /*
+                                         * ESI_FLUSH_PENDING,
+                                         * ESI_FORWARD_DIRECT
+                                         */
+                                        entry->vcc = tmp->vcc;
+                                        entry->old_push=tmp->old_push;
+                                }
+                                entry->status=tmp->status;
+                                break;
+                        }
+                }
+        }
+        if (remoteflag)
+                entry->flags|=LEC_REMOTE_FLAG;
+        else
+                entry->flags&=~LEC_REMOTE_FLAG;
+        if (entry->status == ESI_ARP_PENDING ||
+            entry->status == ESI_UNKNOWN) {
+                entry->status = ESI_VC_PENDING;
+                send_to_lecd(priv, l_svc_setup, entry->mac_addr, atm_addr, NULL);
+        }
+        DPRINTK("After update2\n");
+        dump_arp_table(priv);
+out:
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+}
+
+/*
+ * Notifies: Vcc setup ready 
+ */
+static void
+lec_vcc_added(struct lec_priv *priv, struct atmlec_ioc *ioc_data,
+              struct atm_vcc *vcc,
+              void (*old_push)(struct atm_vcc *vcc, struct sk_buff *skb))
+{
+	unsigned long flags;
+        struct lec_arp_table *entry;
+        int i, found_entry=0;
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        if (ioc_data->receive == 2) {
+                /* Vcc for Multicast Forward. No timer, LANEv2 7.1.20 and 2.3.5.3 */
+
+                DPRINTK("LEC_ARP: Attaching mcast forward\n");
+#if 0
+                entry = lec_arp_find(priv, bus_mac);
+                if (!entry) {
+                        printk("LEC_ARP: Multicast entry not found!\n");
+			goto out;
+                }
+                memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
+                entry->recv_vcc = vcc;
+                entry->old_recv_push = old_push;
+#endif
+                entry = make_entry(priv, bus_mac);
+                if (entry == NULL)
+			goto out;
+                del_timer(&entry->timer);
+                memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
+                entry->recv_vcc = vcc;
+                entry->old_recv_push = old_push;
+                entry->next = priv->mcast_fwds;
+                priv->mcast_fwds = entry;
+                goto out;
+        } else if (ioc_data->receive == 1) {
+                /* Vcc which we don't want to make default vcc, attach it
+                   anyway. */
+                DPRINTK("LEC_ARP:Attaching data direct, not default :%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n",
+                        ioc_data->atm_addr[0],ioc_data->atm_addr[1],
+                        ioc_data->atm_addr[2],ioc_data->atm_addr[3],
+                        ioc_data->atm_addr[4],ioc_data->atm_addr[5],
+                        ioc_data->atm_addr[6],ioc_data->atm_addr[7],
+                        ioc_data->atm_addr[8],ioc_data->atm_addr[9],
+                        ioc_data->atm_addr[10],ioc_data->atm_addr[11],
+                        ioc_data->atm_addr[12],ioc_data->atm_addr[13],
+                        ioc_data->atm_addr[14],ioc_data->atm_addr[15],
+                        ioc_data->atm_addr[16],ioc_data->atm_addr[17],
+                        ioc_data->atm_addr[18],ioc_data->atm_addr[19]);
+                entry = make_entry(priv, bus_mac);
+                if (entry == NULL)
+			goto out;
+                memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
+                memset(entry->mac_addr, 0, ETH_ALEN);
+                entry->recv_vcc = vcc;
+                entry->old_recv_push = old_push;
+                entry->status = ESI_UNKNOWN;
+                entry->timer.expires = jiffies + priv->vcc_timeout_period;
+                entry->timer.function = lec_arp_expire_vcc;
+                add_timer(&entry->timer);
+                entry->next = priv->lec_no_forward;
+                priv->lec_no_forward = entry;
+		dump_arp_table(priv);
+		goto out;
+        }
+        DPRINTK("LEC_ARP:Attaching data direct, default:%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n",
+                ioc_data->atm_addr[0],ioc_data->atm_addr[1],
+                ioc_data->atm_addr[2],ioc_data->atm_addr[3],
+                ioc_data->atm_addr[4],ioc_data->atm_addr[5],
+                ioc_data->atm_addr[6],ioc_data->atm_addr[7],
+                ioc_data->atm_addr[8],ioc_data->atm_addr[9],
+                ioc_data->atm_addr[10],ioc_data->atm_addr[11],
+                ioc_data->atm_addr[12],ioc_data->atm_addr[13],
+                ioc_data->atm_addr[14],ioc_data->atm_addr[15],
+                ioc_data->atm_addr[16],ioc_data->atm_addr[17],
+                ioc_data->atm_addr[18],ioc_data->atm_addr[19]);
+        for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                for (entry = priv->lec_arp_tables[i]; entry; entry=entry->next) {
+                        if (memcmp(ioc_data->atm_addr, entry->atm_addr, 
+                                   ATM_ESA_LEN)==0) {
+                                DPRINTK("LEC_ARP: Attaching data direct\n");
+                                DPRINTK("Currently -> Vcc: %d, Rvcc:%d\n",
+                                        entry->vcc?entry->vcc->vci:0,
+                                        entry->recv_vcc?entry->recv_vcc->vci:0);
+                                found_entry=1;
+                                del_timer(&entry->timer);
+                                entry->vcc = vcc;
+                                entry->old_push = old_push;
+                                if (entry->status == ESI_VC_PENDING) {
+                                        if(priv->maximum_unknown_frame_count
+                                           ==0)
+                                                entry->status = 
+                                                        ESI_FORWARD_DIRECT;
+                                        else {
+                                                entry->timestamp = jiffies;
+                                                entry->status = 
+                                                        ESI_FLUSH_PENDING;
+#if 0
+                                                send_to_lecd(priv,l_flush_xmt,
+                                                             NULL,
+                                                             entry->atm_addr,
+                                                             NULL);
+#endif
+                                        }
+                                } else {
+                                        /* They were forming a connection
+                                           to us, and we to them. Our
+                                           ATM address is numerically lower
+                                           than theirs, so we make connection
+                                           we formed into default VCC (8.1.11).
+                                           Connection they made gets torn
+                                           down. This might confuse some
+                                           clients. Can be changed if
+                                           someone reports trouble... */
+                                        ;
+                                }
+                        }
+                }
+        }
+        if (found_entry) {
+                DPRINTK("After vcc was added\n");
+                dump_arp_table(priv);
+		goto out;
+        }
+        /* Not found, snatch address from first data packet that arrives from
+           this vcc */
+        entry = make_entry(priv, bus_mac);
+        if (!entry)
+		goto out;
+        entry->vcc = vcc;
+        entry->old_push = old_push;
+        memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
+        memset(entry->mac_addr, 0, ETH_ALEN);
+        entry->status = ESI_UNKNOWN;
+        entry->next = priv->lec_arp_empty_ones;
+        priv->lec_arp_empty_ones = entry;
+        entry->timer.expires = jiffies + priv->vcc_timeout_period;
+        entry->timer.function = lec_arp_expire_vcc;
+        add_timer(&entry->timer);
+        DPRINTK("After vcc was added\n");
+	dump_arp_table(priv);
+out:
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+}
+
+static void
+lec_flush_complete(struct lec_priv *priv, unsigned long tran_id)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry;
+        int i;
+  
+        DPRINTK("LEC:lec_flush_complete %lx\n",tran_id);
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                for (entry = priv->lec_arp_tables[i]; entry; entry=entry->next) {
+                        if (entry->flush_tran_id == tran_id &&
+                            entry->status == ESI_FLUSH_PENDING) {
+			        struct sk_buff *skb;
+
+ 				while ((skb = skb_dequeue(&entry->tx_wait)) != NULL)
+					lec_send(entry->vcc, skb, entry->priv);
+                                entry->status = ESI_FORWARD_DIRECT;
+                                DPRINTK("LEC_ARP: Flushed\n");
+                        }
+                }
+        }
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+        dump_arp_table(priv);
+}
+
+static void
+lec_set_flush_tran_id(struct lec_priv *priv,
+                      unsigned char *atm_addr, unsigned long tran_id)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry;
+        int i;
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        for (i = 0; i < LEC_ARP_TABLE_SIZE; i++)
+                for(entry = priv->lec_arp_tables[i]; entry; entry=entry->next)
+                        if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)) {
+                                entry->flush_tran_id = tran_id;
+                                DPRINTK("Set flush transaction id to %lx for %p\n",tran_id,entry);
+                        }
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+}
+
+static int 
+lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc)
+{
+	unsigned long flags;
+        unsigned char mac_addr[] = {
+                0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+        struct lec_arp_table *to_add;
+	struct lec_vcc_priv *vpriv;
+	int err = 0;
+  
+	if (!(vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL)))
+		return -ENOMEM;
+	vpriv->xoff = 0;
+	vpriv->old_pop = vcc->pop;
+	vcc->user_back = vpriv;
+        vcc->pop = lec_pop;
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        to_add = make_entry(priv, mac_addr);
+        if (!to_add) {
+		vcc->pop = vpriv->old_pop;
+		kfree(vpriv);
+                err = -ENOMEM;
+		goto out;
+        }
+        memcpy(to_add->atm_addr, vcc->remote.sas_addr.prv, ATM_ESA_LEN);
+        to_add->status = ESI_FORWARD_DIRECT;
+        to_add->flags |= LEC_PERMANENT_FLAG;
+        to_add->vcc = vcc;
+        to_add->old_push = vcc->push;
+        vcc->push = lec_push;
+        priv->mcast_vcc = vcc;
+        lec_arp_add(priv, to_add);
+out:
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+        return err;
+}
+
+static void
+lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry, *next;
+        int i;
+
+        DPRINTK("LEC_ARP: lec_vcc_close vpi:%d vci:%d\n",vcc->vpi,vcc->vci);
+        dump_arp_table(priv);
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        for(i=0;i<LEC_ARP_TABLE_SIZE;i++) {
+                for(entry = priv->lec_arp_tables[i];entry; entry=next) {
+                        next = entry->next;
+                        if (vcc == entry->vcc) {
+                                lec_arp_remove(priv, entry);
+                                kfree(entry);
+                                if (priv->mcast_vcc == vcc) {
+                                        priv->mcast_vcc = NULL;
+                                }
+                        }
+                }
+        }
+
+        entry = priv->lec_arp_empty_ones;
+        priv->lec_arp_empty_ones = NULL;
+        while (entry != NULL) {
+                next = entry->next;
+                if (entry->vcc == vcc) { /* leave it out from the list */
+                        lec_arp_clear_vccs(entry);
+                        del_timer(&entry->timer);
+                        kfree(entry);
+                }
+                else {              /* put it back to the list */
+                        entry->next = priv->lec_arp_empty_ones;
+                        priv->lec_arp_empty_ones = entry;
+                }
+                entry = next;
+        }
+        
+        entry = priv->lec_no_forward;
+        priv->lec_no_forward = NULL;
+        while (entry != NULL) {
+                next = entry->next;
+                if (entry->recv_vcc == vcc) {
+                        lec_arp_clear_vccs(entry);
+                        del_timer(&entry->timer);
+                        kfree(entry);
+                }
+                else {
+                        entry->next = priv->lec_no_forward;
+                        priv->lec_no_forward = entry;
+                }
+                entry = next;
+        }
+
+        entry = priv->mcast_fwds;
+        priv->mcast_fwds = NULL;
+        while (entry != NULL) {
+                next = entry->next;
+                if (entry->recv_vcc == vcc) {
+                        lec_arp_clear_vccs(entry);
+                        /* No timer, LANEv2 7.1.20 and 2.3.5.3 */
+                        kfree(entry);
+                }
+                else {
+                        entry->next = priv->mcast_fwds;
+                        priv->mcast_fwds = entry;
+                }
+                entry = next;
+        }
+
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+	dump_arp_table(priv);
+}
+
+static void
+lec_arp_check_empties(struct lec_priv *priv,
+                      struct atm_vcc *vcc, struct sk_buff *skb)
+{
+        unsigned long flags;
+        struct lec_arp_table *entry, *prev;
+        struct lecdatahdr_8023 *hdr = (struct lecdatahdr_8023 *)skb->data;
+        unsigned char *src;
+#ifdef CONFIG_TR
+        struct lecdatahdr_8025 *tr_hdr = (struct lecdatahdr_8025 *)skb->data;
+
+        if (priv->is_trdev) src = tr_hdr->h_source;
+        else
+#endif
+        src = hdr->h_source;
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        entry = priv->lec_arp_empty_ones;
+        if (vcc == entry->vcc) {
+                del_timer(&entry->timer);
+                memcpy(entry->mac_addr, src, ETH_ALEN);
+                entry->status = ESI_FORWARD_DIRECT;
+                entry->last_used = jiffies;
+                priv->lec_arp_empty_ones = entry->next;
+                /* We might have got an entry */
+                if ((prev = lec_arp_find(priv,src))) {
+                        lec_arp_remove(priv, prev);
+                        kfree(prev);
+                }
+                lec_arp_add(priv, entry);
+		goto out;
+        }
+        prev = entry;
+        entry = entry->next;
+        while (entry && entry->vcc != vcc) {
+                prev= entry;
+                entry = entry->next;
+        }
+        if (!entry) {
+                DPRINTK("LEC_ARP: Arp_check_empties: entry not found!\n");
+		goto out;
+        }
+        del_timer(&entry->timer);
+        memcpy(entry->mac_addr, src, ETH_ALEN);
+        entry->status = ESI_FORWARD_DIRECT;
+        entry->last_used = jiffies;
+        prev->next = entry->next;
+        if ((prev = lec_arp_find(priv, src))) {
+                lec_arp_remove(priv, prev);
+                kfree(prev);
+        }
+        lec_arp_add(priv, entry);
+out:
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+}
+MODULE_LICENSE("GPL");