path: root/openwrt/target/linux/generic-2.4/patches/226-atm_br2684.patch

diff -Nur linux.old/net/atm/br2684.c linux.new/net/atm/br2684.c
--- linux.old/net/atm/br2684.c	2004-08-08 01:26:06.000000000 +0200
+++ linux.new/net/atm/br2684.c	2005-11-13 00:04:15.000000000 +0100
@@ -16,12 +16,9 @@
 #include <linux/ip.h>
 #include <asm/uaccess.h>
 #include <net/arp.h>
-#include <linux/atm.h>
-#include <linux/atmdev.h>
 
 #include <linux/atmbr2684.h>
 
-#include "common.h"
 #include "ipcommon.h"
 
 /*
@@ -55,36 +52,57 @@
 #define skb_debug(skb)	do {} while (0)
 #endif
 
+#define	BR2684_LLC_LEN		3
+#define	BR2684_SNAP_LEN		3
+#define	BR2684_ETHERTYPE_LEN	2
+#define	BR2684_PID_LEN		2
+#define	BR2684_PAD_LEN		2
+
+static unsigned char llc_common[] = { 0xaa, 0xaa, 0x03 };
+static unsigned char snap_bridged[] = { 0x00, 0x80, 0xc2 };
+static unsigned char snap_routed[] = { 0x00, 0x00, 0x00 };
+static unsigned char pid_ipv4[] = { 0x00, 0x07 };
+static unsigned char ethertype_ipv4[] = { 0x08, 0x00 };
+static unsigned char ethertype_ipv6[] = { 0x86, 0xdd };
+static unsigned char pad_bridged[] = { 0x00, 0x00 };
+
 static unsigned char llc_oui_pid_pad[] =
     { 0xAA, 0xAA, 0x03, 0x00, 0x80, 0xC2, 0x00, 0x07, 0x00, 0x00 };
+static unsigned char llc_oui_ipv6[] =
+    { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x00, 0x86, 0xdd };
+static unsigned char llc_oui_ipv4[] =
+    { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x00, 0x08, 0x00 };
 #define PADLEN	(2)
 
 enum br2684_encaps {
-	e_vc  = BR2684_ENCAPS_VC,
+	e_vc = BR2684_ENCAPS_VC,
 	e_llc = BR2684_ENCAPS_LLC,
 };
 
+
+
 struct br2684_vcc {
-	struct atm_vcc  *atmvcc;
+	struct atm_vcc *atmvcc;
 	struct br2684_dev *brdev;
 	/* keep old push,pop functions for chaining */
-	void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb);
+	void (*old_push) (struct atm_vcc * vcc, struct sk_buff * skb);
 	/* void (*old_pop)(struct atm_vcc *vcc,struct sk_buff *skb); */
 	enum br2684_encaps encaps;
+	enum br2684_payload payload;
 	struct list_head brvccs;
 #ifdef CONFIG_ATM_BR2684_IPFILTER
 	struct br2684_filter filter;
-#endif /* CONFIG_ATM_BR2684_IPFILTER */
+#endif				/* CONFIG_ATM_BR2684_IPFILTER */
 #ifndef FASTER_VERSION
 	unsigned copies_needed, copies_failed;
-#endif /* FASTER_VERSION */
+#endif				/* FASTER_VERSION */
 };
 
 struct br2684_dev {
 	struct net_device net_dev;
 	struct list_head br2684_devs;
 	int number;
-	struct list_head brvccs; /* one device <=> one vcc (before xmas) */
+	struct list_head brvccs;	/* one device <=> one vcc (before xmas) */
 	struct net_device_stats stats;
 	int mac_was_set;
 };
@@ -173,24 +197,84 @@
 		}
 		skb = skb2;
 	}
-	skb_push(skb, minheadroom);
-	if (brvcc->encaps == e_llc)
-		memcpy(skb->data, llc_oui_pid_pad, 10);
-	else
-		memset(skb->data, 0, 2);
-#endif /* FASTER_VERSION */
+
+	/* This skb_push is a problem: routed packets need less headroom than
+	 * bridged packets.
+	 */
+
+/*	skb_push(skb, minheadroom); */
+	if (brvcc->encaps == e_llc) {
+		int offset = 0;
+		int actual_headroom;
+
+		actual_headroom =
+		    BR2684_LLC_LEN +
+		    BR2684_SNAP_LEN +
+		    ((brvcc->payload == p_bridged) ?
+		     (BR2684_PID_LEN + BR2684_PAD_LEN) :
+		     BR2684_ETHERTYPE_LEN);
+
+		skb_push(skb, actual_headroom);
+		memcpy(skb->data, llc_common, BR2684_LLC_LEN);
+		offset += BR2684_LLC_LEN;
+
+		if (brvcc->payload == p_bridged) {
+			memcpy(skb->data + offset, snap_bridged,
+			       BR2684_SNAP_LEN);
+			offset += BR2684_SNAP_LEN;
+			/* pid_ipv4 is poorly named.  should probably be
+			 * pid_ethernet
+			 */
+			memcpy(skb->data + offset, pid_ipv4,
+			       BR2684_PID_LEN);
+			offset += BR2684_PID_LEN;
+			memcpy(skb->data + offset, pad_bridged,
+			       BR2684_PAD_LEN);
+			offset += BR2684_PAD_LEN;
+		} else if (brvcc->payload == p_routed) {
+			unsigned short prot =
+			    __constant_ntohs(skb->protocol);
+			memcpy(skb->data + offset, snap_routed,
+			       BR2684_SNAP_LEN);
+			offset += BR2684_SNAP_LEN;
+
+			switch (prot) {
+			case ETH_P_IP:
+				memcpy(skb->data + offset,
+				       ethertype_ipv4,
+				       BR2684_ETHERTYPE_LEN);
+				break;
+			case ETH_P_IPV6:
+				memcpy(skb->data + offset,
+				       ethertype_ipv6,
+				       BR2684_ETHERTYPE_LEN);
+				break;
+			default:
+				dev_kfree_skb(skb);
+				return 0;
+			}
+			offset += BR2684_ETHERTYPE_LEN;
+
+		}
+	} else {
+		skb_push(skb, 2);
+		if (brvcc->payload == p_bridged)
+			memset(skb->data, 0, 2);
+	}
+#endif				/* FASTER_VERSION */
 	skb_debug(skb);
 
 	ATM_SKB(skb)->vcc = atmvcc = brvcc->atmvcc;
-	DPRINTK("atm_skb(%p)->vcc(%p)->dev(%p)\n", skb, atmvcc, atmvcc->dev);
+	DPRINTK("atm_skb(%p)->vcc(%p)->dev(%p)\n", skb, atmvcc,
+		atmvcc->dev);
 	if (!atm_may_send(atmvcc, skb->truesize)) {
 		/* we free this here for now, because we cannot know in a higher 
-			layer whether the skb point it supplied wasn't freed yet.
-			now, it always is.
-		*/
+		   layer whether the skb point it supplied wasn't freed yet.
+		   now, it always is.
+		 */
 		dev_kfree_skb(skb);
 		return 0;
-		}
+	}
 	atomic_add(skb->truesize, &atmvcc->sk->wmem_alloc);
 	ATM_SKB(skb)->atm_options = atmvcc->atm_options;
 	brdev->stats.tx_packets++;
@@ -428,18 +512,39 @@
 	atm_return(atmvcc, skb->truesize);
 	DPRINTK("skb from brdev %p\n", brdev);
 	if (brvcc->encaps == e_llc) {
+		/* accept packets that have "ipv[46]" in the snap header */
+		/* 8 - 2 == sizeof(llc_oui_ipv6) - BR2684_ETHERTYPE_LEN */
+		if (memcmp(skb->data, llc_oui_ipv6, 8 - 2) == 0) {
+			plen = sizeof(llc_oui_ipv6);
+
+			if (memcmp(skb->data + 6, ethertype_ipv6, 2) == 0)
+				skb->protocol =
+				    __constant_htons(ETH_P_IPV6);
+			else if (memcmp(skb->data + 6, ethertype_ipv4, 2)
+				 == 0)
+				skb->protocol = __constant_htons(ETH_P_IP);
+			else {
+				brdev->stats.rx_errors++;
+				dev_kfree_skb(skb);
+				return;
+			}
+			skb_pull(skb, plen);
+			skb->nh.raw = skb->data;
+			skb->pkt_type = PACKET_HOST;
+		}
+
 		/* let us waste some time for checking the encapsulation.
 		   Note, that only 7 char is checked so frames with a valid FCS
 		   are also accepted (but FCS is not checked of course) */
-		if (memcmp(skb->data, llc_oui_pid_pad, 7)) {
+		else if (memcmp(skb->data, llc_oui_pid_pad, 7) == 0) {
+			skb_pull(skb, plen - ETH_HLEN);
+			skb->protocol =
+			    eth_type_trans(skb, &brdev->net_dev);
+		} else {
 			brdev->stats.rx_errors++;
 			dev_kfree_skb(skb);
 			return;
 		}
-
-		/* Strip FCS if present */
-		if (skb->len > 7 && skb->data[7] == 0x01)
-			__skb_trim(skb, skb->len - 4);
 	} else {
 		plen = PADLEN + ETH_HLEN;	/* pad, dstmac,srcmac, ethtype */
 		/* first 2 chars should be 0 */
@@ -448,13 +553,14 @@
 			dev_kfree_skb(skb);
 			return;
 		}
+		skb_pull(skb, plen - ETH_HLEN);
+		skb->protocol = eth_type_trans(skb, &brdev->net_dev);
 	}
 	if (skb->len < plen) {
 		brdev->stats.rx_errors++;
 		dev_kfree_skb(skb);	/* dev_ not needed? */
 		return;
 	}
-
 #ifdef FASTER_VERSION
 	/* FIXME: tcpdump shows that pointer to mac header is 2 bytes earlier,
 	   than should be. What else should I set? */
@@ -465,30 +571,29 @@
 	skb->protocol = ((u16 *) skb->data)[-1];
 #else				/* some protocols might require this: */
 	skb->protocol = br_type_trans(skb, &brdev->net_dev);
-#endif /* CONFIG_BR2684_FAST_TRANS */
+#endif				/* CONFIG_BR2684_FAST_TRANS */
 #else
-	skb_pull(skb, plen - ETH_HLEN);
-	skb->protocol = eth_type_trans(skb, &brdev->net_dev);
-#endif /* FASTER_VERSION */
+	/* skb_pull(skb, plen - ETH_HLEN); */
+	/* skb->protocol = eth_type_trans(skb, &brdev->net_dev); */
+#endif				/* FASTER_VERSION */
 #ifdef CONFIG_ATM_BR2684_IPFILTER
 	if (packet_fails_filter(skb->protocol, brvcc, skb)) {
 		brdev->stats.rx_dropped++;
 		dev_kfree_skb(skb);
 		return;
 	}
-#endif /* CONFIG_ATM_BR2684_IPFILTER */
+#endif				/* CONFIG_ATM_BR2684_IPFILTER */
 	skb->dev = &brdev->net_dev;
-	ATM_SKB(skb)->vcc = atmvcc;	/* needed ? */
+	/* ATM_SKB(skb)->vcc = atmvcc;  *//* needed ? */
 	DPRINTK("received packet's protocol: %x\n", ntohs(skb->protocol));
 	skb_debug(skb);
-	if (!(brdev->net_dev.flags & IFF_UP)) { /* sigh, interface is down */
+	if (!(brdev->net_dev.flags & IFF_UP)) {	/* sigh, interface is down */
 		brdev->stats.rx_dropped++;
 		dev_kfree_skb(skb);
 		return;
 	}
 	brdev->stats.rx_packets++;
 	brdev->stats.rx_bytes += skb->len;
-	memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
 	netif_rx(skb);
 }
 
@@ -525,10 +630,10 @@
 		err = -EEXIST;
 		goto error;
 	}
-	if (be.fcs_in != BR2684_FCSIN_NO || be.fcs_out != BR2684_FCSOUT_NO ||
-	    be.fcs_auto || be.has_vpiid || be.send_padding || (be.encaps !=
-	    BR2684_ENCAPS_VC && be.encaps != BR2684_ENCAPS_LLC) ||
-	    be.min_size != 0) {
+	if (be.fcs_in != BR2684_FCSIN_NO || be.fcs_out != BR2684_FCSOUT_NO
+	    || be.fcs_auto || be.has_vpiid || be.send_padding
+	    || (be.encaps != BR2684_ENCAPS_VC
+		&& be.encaps != BR2684_ENCAPS_LLC) || be.min_size != 0) {
 		err = -EINVAL;
 		goto error;
 	}
@@ -554,18 +659,21 @@
 	brvcc->atmvcc = atmvcc;
 	atmvcc->user_back = brvcc;
 	brvcc->encaps = (enum br2684_encaps) be.encaps;
+	brvcc->payload = (enum br2684_payload) be.payload;
 	brvcc->old_push = atmvcc->push;
 	barrier();
 	atmvcc->push = br2684_push;
 	skb_queue_head_init(&copy);
 	skb_migrate(&atmvcc->sk->receive_queue, &copy);
 	while ((skb = skb_dequeue(&copy))) {
+#ifdef notdef
 		BRPRIV(skb->dev)->stats.rx_bytes -= skb->len;
 		BRPRIV(skb->dev)->stats.rx_packets--;
+#endif
 		br2684_push(atmvcc, skb);
 	}
 	return 0;
-    error:
+      error:
 	write_unlock_irq(&devs_lock);
 	MOD_DEC_USE_COUNT;
 	return err;
@@ -608,12 +717,25 @@
 
 	if (ni.ifname[0] != '\0') {
 		memcpy(brdev->net_dev.name, ni.ifname,
-		    sizeof(brdev->net_dev.name));
-		brdev->net_dev.name[sizeof(brdev->net_dev.name) - 1] = '\0';
+		       sizeof(brdev->net_dev.name));
+		brdev->net_dev.name[sizeof(brdev->net_dev.name) - 1] =
+		    '\0';
 	} else
 		sprintf(brdev->net_dev.name, "nas%d", brdev->number);
 	DPRINTK("registered netdev %s\n", brdev->net_dev.name);
-	ether_setup(&brdev->net_dev);
+	if (ni.payload == p_routed) {
+		brdev->net_dev.hard_header_len = 0;
+		brdev->net_dev.addr_len = 0;
+		brdev->net_dev.mtu = 1500;
+
+		/* Type PPP seems most suitable */
+		brdev->net_dev.type = ARPHRD_PPP;
+		brdev->net_dev.flags =
+		    IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
+		brdev->net_dev.tx_queue_len = 100;
+	} else {
+		ether_setup(&brdev->net_dev);
+	}
 	brdev->mac_was_set = 0;
 #ifdef FASTER_VERSION
 	my_eth_header = brdev->net_dev.hard_header;
@@ -677,12 +799,11 @@
 		err = br2684_setfilt(atmvcc, arg);
 		MOD_DEC_USE_COUNT;
 		return err;
-#endif /* CONFIG_ATM_BR2684_IPFILTER */
+#endif				/* CONFIG_ATM_BR2684_IPFILTER */
 	}
 	return -ENOIOCTLCMD;
 }
 
-#ifdef CONFIG_PROC_FS
 /* Never put more than 256 bytes in at once */
 static int br2684_proc_engine(loff_t pos, char *buf)
 {
@@ -692,52 +813,62 @@
 	list_for_each(lhd, &br2684_devs) {
 		brdev = list_entry_brdev(lhd);
 		if (pos-- == 0)
-			return sprintf(buf, "dev %.16s: num=%d, mac=%02X:%02X:"
-			    "%02X:%02X:%02X:%02X (%s)\n", brdev->net_dev.name,
-			    brdev->number,
-			    brdev->net_dev.dev_addr[0],
-			    brdev->net_dev.dev_addr[1],
-			    brdev->net_dev.dev_addr[2],
-			    brdev->net_dev.dev_addr[3],
-			    brdev->net_dev.dev_addr[4],
-			    brdev->net_dev.dev_addr[5],
-			    brdev->mac_was_set ? "set" : "auto");
+			return sprintf(buf,
+				       "dev %.16s: num=%d, mac=%02X:%02X:"
+				       "%02X:%02X:%02X:%02X (%s)\n",
+				       brdev->net_dev.name, brdev->number,
+				       brdev->net_dev.dev_addr[0],
+				       brdev->net_dev.dev_addr[1],
+				       brdev->net_dev.dev_addr[2],
+				       brdev->net_dev.dev_addr[3],
+				       brdev->net_dev.dev_addr[4],
+				       brdev->net_dev.dev_addr[5],
+				       brdev->
+				       mac_was_set ? "set" : "auto");
 		list_for_each(lhc, &brdev->brvccs) {
 			brvcc = list_entry_brvcc(lhc);
 			if (pos-- == 0)
-				return sprintf(buf, "  vcc %d.%d.%d: encaps=%s"
+				return sprintf(buf,
+					       "  vcc %d.%d.%d: encaps=%s"
+					       ", payload=%s"
 #ifndef FASTER_VERSION
-				    ", failed copies %u/%u"
-#endif /* FASTER_VERSION */
-				    "\n", brvcc->atmvcc->dev->number,
-				    brvcc->atmvcc->vpi, brvcc->atmvcc->vci,
-				    (brvcc->encaps == e_llc) ? "LLC" : "VC"
+					       ", failed copies %u/%u"
+#endif				/* FASTER_VERSION */
+					       "\n",
+					       brvcc->atmvcc->dev->number,
+					       brvcc->atmvcc->vpi,
+					       brvcc->atmvcc->vci,
+					       (brvcc->encaps ==
+						e_llc) ? "LLC" : "VC",
+					       (brvcc->payload ==
+						p_bridged) ? "bridged" :
+					       "routed"
 #ifndef FASTER_VERSION
-				    , brvcc->copies_failed
-				    , brvcc->copies_needed
-#endif /* FASTER_VERSION */
+					       , brvcc->copies_failed,
+					       brvcc->copies_needed
+#endif				/* FASTER_VERSION */
 				    );
 #ifdef CONFIG_ATM_BR2684_IPFILTER
 #define b1(var, byte)	((u8 *) &brvcc->filter.var)[byte]
 #define bs(var)		b1(var, 0), b1(var, 1), b1(var, 2), b1(var, 3)
 			if (brvcc->filter.netmask != 0 && pos-- == 0)
-				return sprintf(buf, "    filter=%d.%d.%d.%d/"
-				    "%d.%d.%d.%d\n", bs(prefix), bs(netmask));
+				return sprintf(buf,
+					       "    filter=%d.%d.%d.%d/"
+					       "%d.%d.%d.%d\n", bs(prefix),
+					       bs(netmask));
 #undef bs
 #undef b1
-#endif /* CONFIG_ATM_BR2684_IPFILTER */
+#endif				/* CONFIG_ATM_BR2684_IPFILTER */
 		}
 	}
 	return 0;
 }
 
 static ssize_t br2684_proc_read(struct file *file, char *buf, size_t count,
-	loff_t *pos)
+				loff_t * pos)
 {
 	unsigned long page;
 	int len = 0, x, left;
-	loff_t n = *pos;
-
 	page = get_free_page(GFP_KERNEL);
 	if (!page)
 		return -ENOMEM;
@@ -746,7 +877,7 @@
 		left = count;
 	read_lock(&devs_lock);
 	for (;;) {
-		x = br2684_proc_engine(n, &((char *) page)[len]);
+		x = br2684_proc_engine(*pos, &((char *) page)[len]);
 		if (x == 0)
 			break;
 		if (x > left)
@@ -761,12 +892,11 @@
 		}
 		len += x;
 		left -= x;
-		n++;
+		(*pos)++;
 		if (left < 256)
 			break;
 	}
 	read_unlock(&devs_lock);
-	*pos = n;
 	if (len > 0 && copy_to_user(buf, (char *) page, len))
 		len = -EFAULT;
 	free_page(page);
@@ -774,34 +904,32 @@
 }
 
 static struct file_operations br2684_proc_operations = {
-	read: br2684_proc_read,
+      read:br2684_proc_read,
 };
 
 extern struct proc_dir_entry *atm_proc_root;	/* from proc.c */
-#endif /* CONFIG_PROC_FS */
+
+extern int (*br2684_ioctl_hook) (struct atm_vcc *, unsigned int,
+				 unsigned long);
 
 /* the following avoids some spurious warnings from the compiler */
 #define UNUSED __attribute__((unused))
 
 static int __init UNUSED br2684_init(void)
 {
-#ifdef CONFIG_PROC_FS
 	struct proc_dir_entry *p;
 	if ((p = create_proc_entry("br2684", 0, atm_proc_root)) == NULL)
 		return -ENOMEM;
 	p->proc_fops = &br2684_proc_operations;
-#endif /* CONFIG_PROC_FS */
-	br2684_ioctl_set(br2684_ioctl);
+	br2684_ioctl_hook = br2684_ioctl;
 	return 0;
 }
 
 static void __exit UNUSED br2684_exit(void)
 {
 	struct br2684_dev *brdev;
-	br2684_ioctl_set(NULL);
-#ifdef CONFIG_PROC_FS
+	br2684_ioctl_hook = NULL;
 	remove_proc_entry("br2684", atm_proc_root);
-#endif /* CONFIG_PROC_FS */
 	while (!list_empty(&br2684_devs)) {
 		brdev = list_entry_brdev(br2684_devs.next);
 		unregister_netdev(&brdev->net_dev);
diff -Nur linux.old/net/atm/common.c linux.new/net/atm/common.c
--- linux.old/net/atm/common.c	2004-02-18 14:36:32.000000000 +0100
+++ linux.new/net/atm/common.c	2005-11-13 00:46:11.000000000 +0100
@@ -158,6 +158,7 @@
 }
 #ifdef CONFIG_ATM_BR2684_MODULE
 EXPORT_SYMBOL(br2684_ioctl_set);
+EXPORT_SYMBOL(br2684_ioctl_hook);
 #endif
 #endif

diff -Nur linux.old/include/linux/atmbr2684.h linux.new/include/linux/atmbr2684.h
--- linux.old/include/linux/atmbr2684.h	2005-11-13 00:28:19.000000000 +0100
+++ linux.new/include/linux/atmbr2684.h	2005-11-13 00:06:42.000000000 +0100
@@ -3,6 +3,7 @@
 
 #include <linux/atm.h>
 #include <linux/if.h>		/* For IFNAMSIZ */
+#include <linux/if_ether.h>	/* ETH_P_* */
 
 /*
  * Type of media we're bridging (ethernet, token ring, etc)  Currently only
@@ -36,15 +37,24 @@
 #define BR2684_ENCAPS_AUTODETECT (2)	/* Unsuported */
 
 /*
+ * Is this VC bridged or routed?
+ */
+
+#define	BR2684_PAYLOAD_ROUTED	(0)
+#define	BR2684_PAYLOAD_BRIDGED	(1)
+
+
+/*
  * This is for the ATM_NEWBACKENDIF call - these are like socket families:
  * the first element of the structure is the backend number and the rest
  * is per-backend specific
  */
 struct atm_newif_br2684 {
-	atm_backend_t	backend_num;	/* ATM_BACKEND_BR2684 */
-	int		media;		/* BR2684_MEDIA_* */
-	char		ifname[IFNAMSIZ];
-	int		mtu;
+	atm_backend_t backend_num;	/* ATM_BACKEND_BR2684 */
+	int media;		/* BR2684_MEDIA_* */
+	char ifname[IFNAMSIZ];
+	int mtu;
+	int payload;		/* bridged or routed */
 };
 
 /*
@@ -68,16 +78,17 @@
  * is per-backend specific
  */
 struct atm_backend_br2684 {
-	atm_backend_t	backend_num;	/* ATM_BACKEND_BR2684 */
+	atm_backend_t backend_num;	/* ATM_BACKEND_BR2684 */
 	struct br2684_if_spec ifspec;
-	int	fcs_in;		/* BR2684_FCSIN_* */
-	int	fcs_out;	/* BR2684_FCSOUT_* */
-	int	fcs_auto;	/* 1: fcs_{in,out} disabled if no FCS rx'ed */
-	int	encaps;		/* BR2684_ENCAPS_* */
-	int	has_vpiid;	/* 1: use vpn_id - Unsupported */
-	__u8	vpn_id[7];
-	int	send_padding;	/* unsupported */
-	int	min_size;	/* we will pad smaller packets than this */
+	int fcs_in;		/* BR2684_FCSIN_* */
+	int fcs_out;		/* BR2684_FCSOUT_* */
+	int fcs_auto;		/* 1: fcs_{in,out} disabled if no FCS rx'ed */
+	int encaps;		/* BR2684_ENCAPS_* */
+	int payload;		/* BR2684_PAYLOAD_* */
+	int has_vpiid;		/* 1: use vpn_id - Unsupported */
+	__u8 vpn_id[7];
+	int send_padding;	/* unsupported */
+	int min_size;		/* we will pad smaller packets than this */
 };
 
 /*
@@ -95,7 +106,12 @@
 	struct br2684_filter filter;
 };
 
+enum br2684_payload {
+	p_routed = BR2684_PAYLOAD_ROUTED,
+	p_bridged = BR2684_PAYLOAD_BRIDGED,
+};
+
 #define BR2684_SETFILT	_IOW( 'a', ATMIOC_BACKEND + 0, \
 				struct br2684_filter_set)
 
-#endif /* _LINUX_ATMBR2684_H */
+#endif				/* _LINUX_ATMBR2684_H */