make psnap and p8022 use the new LLC stack

. kill BR_LLC_LOCK, not needed anymore
. kill net/core/ext8022.c, not needed anymore as all
  UI 802.2 protocols now use the new LLC stack
. use struct list_head in datalink_proto (only needed by psnap)
. make IPX and Appletalk use datalink_proto->request
. make CONFIG_ATALK and CONFIG_IPX dependent on CONFIG_LLC
. fix __FUNCTION__ usage in LLC 

drivers/net/appletalk/Config.in

@@ -3,7 +3,6 @@
 #
 
 mainmenu_option next_comment
-comment 'Appletalk devices'
 dep_mbool 'Appletalk interfaces support' CONFIG_DEV_APPLETALK $CONFIG_ATALK
 if [ "$CONFIG_DEV_APPLETALK" = "y" ]; then
    tristate '  Apple/Farallon LocalTalk PC support' CONFIG_LTPC
@@ -18,4 +17,3 @@ if [ "$CONFIG_DEV_APPLETALK" = "y" ]; then
       bool '    Appletalk-IP to IP Decapsulation support' CONFIG_IPDDP_DECAP
    fi
 fi
-endmenu

include/linux/brlock.h

@@ -29,13 +29,11 @@
  * compare-and-swap cpus (Sparc64).  So we control which
  * implementation to use with a __BRLOCK_USE_ATOMICS define. -DaveM
  *
- * Added BR_LLC_LOCK for use in net/core/ext8022.c -acme
  */
 
 /* Register bigreader lock indices here. */
 enum brlock_indices {
 	BR_NETPROTO_LOCK,
-	BR_LLC_LOCK,
 	__BR_END
 };
 

include/net/datalink.h

@@ -2,24 +2,17 @@
 #define _NET_INET_DATALINK_H_
 
 struct datalink_proto {
-        unsigned short  type_len;
         unsigned char   type[8];
-        const char      *string_name;
 
-        union {
-                struct llc_pinfo *llc;
-        } ll_pinfo;
-
-	struct llc_sc_info *llc_sc;
-	struct sock *sock;
+	struct llc_sap   *sap;
 
         unsigned short  header_length;
 
         int     (*rcvfunc)(struct sk_buff *, struct net_device *,
                                 struct packet_type *);
-        void    (*datalink_header)(struct datalink_proto *, struct sk_buff *,
+	int     (*request)(struct datalink_proto *, struct sk_buff *,
                                         unsigned char *);
-        struct datalink_proto   *next;
+	struct list_head node;
 };
 
 #endif

include/net/p8022.h

 #ifndef _NET_P8022_H
 #define _NET_P8022_H
+#include <net/llc_if.h>
+
 extern struct datalink_proto *register_8022_client(unsigned char type,
-						   int (*rcvfunc)
-						   	(struct sk_buff *,
-							 struct net_device *,
-							 struct packet_type *));
-extern void unregister_8022_client(unsigned char type);
+			   int (*indicate)(struct llc_prim_if_block *prim));
+extern void unregister_8022_client(struct datalink_proto *proto);
+
 #endif

include/net/psnap.h

@@ -2,6 +2,6 @@
 #define _NET_PSNAP_H
 
 extern struct datalink_proto *register_snap_client(unsigned char *desc, int (*rcvfunc)(struct sk_buff *, struct net_device *, struct packet_type *));
-extern void unregister_snap_client(unsigned char *desc);
+extern void unregister_snap_client(struct datalink_proto *proto);
 
 #endif

net/802/p8022.c

@@ -23,103 +23,48 @@
 #include <linux/in.h>
 #include <linux/init.h>
 #include <net/p8022.h>
+#include <net/llc_sap.h>
 
-extern void llc_register_sap(unsigned char sap,
-			     int (*rcvfunc)(struct sk_buff *,
-					    struct net_device *,
-					    struct packet_type *));
-extern void llc_unregister_sap(unsigned char sap);
-
-static struct datalink_proto *p8022_list;
-/*
- *	We don't handle the loopback SAP stuff, the extended
- *	802.2 command set, multicast SAP identifiers and non UI
- *	frames. We have the absolute minimum needed for IPX,
- *	IP and Appletalk phase 2. See the llc_* routines for
- *	support libraries if your protocol needs these.
- */
-static struct datalink_proto *find_8022_client(unsigned char type)
-{
-	struct datalink_proto *proto = p8022_list;
-
-	while (proto && *(proto->type) != type)
-		proto = proto->next;
-	return proto;
-}
-
-int p8022_rcv(struct sk_buff *skb, struct net_device *dev,
-	      struct packet_type *pt)
-{
-	struct datalink_proto *proto;
-	int rc = 0;
-
-	proto = find_8022_client(*(skb->h.raw));
-	if (!proto) {
-		skb->sk = NULL;
-		kfree_skb(skb);
-		goto out;
-	}
-	skb->h.raw += 3;
-	skb->nh.raw += 3;
-	skb_pull(skb, 3);
-	rc = proto->rcvfunc(skb, dev, pt);
-out:	return rc;
-}
-
-static void p8022_datalink_header(struct datalink_proto *dl,
-				  struct sk_buff *skb, unsigned char *dest_node)
+static int p8022_request(struct datalink_proto *dl, struct sk_buff *skb,
+			 unsigned char *dest)
 {
-	struct net_device *dev = skb->dev;
-	unsigned char *rawp = skb_push(skb, 3);
+	union llc_u_prim_data prim_data;
+	struct llc_prim_if_block prim;
 
-	*rawp++ = dl->type[0];
-	*rawp++ = dl->type[0];
-	*rawp	= 0x03;	/* UI */
-	dev->hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len);
+	prim.data                 = &prim_data;
+	prim.sap                  = dl->sap;
+	prim.prim                 = LLC_DATAUNIT_PRIM;
+	prim_data.test.skb        = skb;
+	prim_data.test.saddr.lsap = dl->sap->laddr.lsap;
+	prim_data.test.daddr.lsap = dl->sap->laddr.lsap;
+	memcpy(prim_data.test.saddr.mac, skb->dev->dev_addr, IFHWADDRLEN);
+	memcpy(prim_data.test.daddr.mac, dest, IFHWADDRLEN);
+	return dl->sap->req(&prim);
 }
 
 struct datalink_proto *register_8022_client(unsigned char type,
-					    int (*rcvfunc)(struct sk_buff *,
-						    	   struct net_device *,
-							  struct packet_type *))
+			  int (*indicate)(struct llc_prim_if_block *prim))
 {
-	struct datalink_proto *proto = NULL;
+	struct datalink_proto *proto;
 
-	if (find_8022_client(type))
-		goto out;
 	proto = kmalloc(sizeof(*proto), GFP_ATOMIC);
 	if (proto) {
 		proto->type[0]		= type;
-		proto->type_len		= 1;
-		proto->rcvfunc		= rcvfunc;
 		proto->header_length	= 3;
-		proto->datalink_header	= p8022_datalink_header;
-		proto->string_name	= "802.2";
-		proto->next		= p8022_list;
-		p8022_list		= proto;
-		llc_register_sap(type, p8022_rcv);
+		proto->request		= p8022_request;
+		proto->sap = llc_sap_open(indicate, NULL, type);
+		if (!proto->sap) {
+			kfree(proto);
+			proto = NULL;
 		}
-out:	return proto;
+	}
+	return proto;
 }
 
-void unregister_8022_client(unsigned char type)
+void unregister_8022_client(struct datalink_proto *proto)
 {
-	struct datalink_proto *tmp, **clients = &p8022_list;
-	unsigned long flags;
-
-	save_flags(flags);
-	cli();
-	while (*clients) {
-		tmp = *clients;
-		if (tmp->type[0] == type) {
-			*clients = tmp->next;
-			kfree(tmp);
-			llc_unregister_sap(type);
-			break;
-		}
-		clients = &tmp->next;
-	}
-	restore_flags(flags);
+	llc_sap_close(proto->sap);
+	kfree(proto);
 }
 
 EXPORT_SYMBOL(register_8022_client);

net/802/p8023.c

@@ -24,11 +24,12 @@
  *	addresses, we just need to give it the buffer length.
  */
  
-static void p8023_datalink_header(struct datalink_proto *dl, 
+static int p8023_request(struct datalink_proto *dl, 
 		struct sk_buff *skb, unsigned char *dest_node)
 {
 	struct net_device	*dev = skb->dev;
 	dev->hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len);
+	return dev_queue_xmit(skb);
 }
 
 /*
@@ -42,10 +43,8 @@ struct datalink_proto *make_8023_client(void)
 	proto = (struct datalink_proto *) kmalloc(sizeof(*proto), GFP_ATOMIC);
 	if (proto != NULL) 
 	{
-		proto->type_len = 0;
 		proto->header_length = 0;
-		proto->datalink_header = p8023_datalink_header;
-		proto->string_name = "802.3";
+		proto->request = p8023_request;
 	}
 	return proto;
 }

net/802/psnap.c

@@ -15,61 +15,90 @@
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
 #include <net/datalink.h>
-#include <net/p8022.h>
 #include <net/psnap.h>
+#include <net/llc_if.h>
+#include <net/llc_sap.h>
 #include <linux/mm.h>
 #include <linux/in.h>
 #include <linux/init.h>
+#include <linux/brlock.h>
 
-static struct datalink_proto *snap_list;
-static struct datalink_proto *snap_dl;		/* 802.2 DL for SNAP */
+LIST_HEAD(snap_list);
+static struct llc_sap *snap_sap;
 
 /*
  *	Find a snap client by matching the 5 bytes.
  */
 static struct datalink_proto *find_snap_client(unsigned char *desc)
 {
-	struct datalink_proto *proto = snap_list;
+	struct list_head *entry;
+	struct datalink_proto *proto = NULL, *p;
 
-	for (; proto && memcmp(proto->type, desc, 5); proto = proto->next);
+	if (list_empty(&snap_list))
+		goto out;
 
+	list_for_each(entry, &snap_list) {
+		p = list_entry(entry, struct datalink_proto, node);
+		if (!memcmp(p->type, desc, 5)) {
+			proto = p;
+			break;
+		}
+	}
+out:
 	return proto;
 }
 
 /*
  *	A SNAP packet has arrived
  */
-int snap_rcv(struct sk_buff *skb, struct net_device *dev,
-	     struct packet_type *pt)
+static int snap_indicate(struct llc_prim_if_block *prim)
 {
+	struct sk_buff *skb;
+	struct datalink_proto *proto;
+	int rc = 1;
 	static struct packet_type psnap_packet_type = {
 		.type = __constant_htons(ETH_P_SNAP),
-		.func = snap_rcv,
 	};
 
-	struct datalink_proto *proto = find_snap_client(skb->h.raw);
+	if (prim->prim != LLC_DATAUNIT_PRIM)
+		goto out;
+
+	skb = prim->data->udata.skb;
+	proto = find_snap_client(skb->h.raw);
 
 	if (proto) {
 		/* Pass the frame on. */
 		skb->h.raw  += 5;
-		skb->nh.raw += 5;
 		skb_pull(skb, 5);
-
-		return proto->rcvfunc(skb, dev, &psnap_packet_type);
-	}
+		rc = proto->rcvfunc(skb, skb->dev, &psnap_packet_type);
+	} else {
 		skb->sk = NULL;
 		kfree_skb(skb);
-	return 0;
+		rc = 1;
+	}
+out:
+	return rc;
 }
 
 /*
  *	Put a SNAP header on a frame and pass to 802.2
  */
-static void snap_datalink_header(struct datalink_proto *dl,
-				 struct sk_buff *skb, unsigned char *dest_node)
+static int snap_request(struct datalink_proto *dl,
+			struct sk_buff *skb, u8 *dest)
 {
+	union llc_u_prim_data prim_data;
+	struct llc_prim_if_block prim;
+
 	memcpy(skb_push(skb, 5), dl->type, 5);
-	snap_dl->datalink_header(snap_dl, skb, dest_node);
+	prim.data                 = &prim_data;
+	prim.sap                  = snap_sap;
+	prim.prim                 = LLC_DATAUNIT_PRIM;
+	prim_data.test.skb        = skb;
+	prim_data.test.saddr.lsap = snap_sap->laddr.lsap;
+	prim_data.test.daddr.lsap = snap_sap->laddr.lsap;
+	memcpy(prim_data.test.saddr.mac, skb->dev->dev_addr, IFHWADDRLEN);
+	memcpy(prim_data.test.daddr.mac, dest, IFHWADDRLEN);
+	return snap_sap->req(&prim);
 }
 
 /*
@@ -80,9 +109,9 @@ EXPORT_SYMBOL(unregister_snap_client);
 
 static int __init snap_init(void)
 {
-	snap_dl = register_8022_client(0xAA, snap_rcv);
+	snap_sap = llc_sap_open(snap_indicate, NULL, 0xAA);
 
-	if (!snap_dl)
+	if (!snap_sap)
 		printk(KERN_CRIT "SNAP - unable to register with 802.2\n");
 
 	return 0;
@@ -90,6 +119,14 @@ static int __init snap_init(void)
 
 module_init(snap_init);
 
+static void __exit snap_exit(void)
+{
+	llc_sap_close(snap_sap);
+}
+
+module_exit(snap_exit);
+
+
 /*
  *	Register SNAP clients. We don't yet use this for IP.
  */
@@ -100,46 +137,35 @@ struct datalink_proto *register_snap_client(unsigned char *desc,
 {
 	struct datalink_proto *proto = NULL;
 
+	br_write_lock_bh(BR_NETPROTO_LOCK);
+
 	if (find_snap_client(desc))
 		goto out;
 
 	proto = kmalloc(sizeof(*proto), GFP_ATOMIC);
 	if (proto) {
 		memcpy(proto->type, desc,5);
-		proto->type_len		= 5;
 		proto->rcvfunc		= rcvfunc;
-		proto->header_length	= 5 + snap_dl->header_length;
-		proto->datalink_header	= snap_datalink_header;
-		proto->string_name	= "SNAP";
-		proto->next		= snap_list;
-		snap_list		= proto;
+		proto->header_length	= 5 + 3; /* snap + 802.2 */
+		proto->request		= snap_request;
+		list_add(&proto->node, &snap_list);
 	}
 out:
+	br_write_unlock_bh(BR_NETPROTO_LOCK);
 	return proto;
 }
 
 /*
  *	Unregister SNAP clients. Protocols no longer want to play with us ...
  */
-void unregister_snap_client(unsigned char *desc)
+void unregister_snap_client(struct datalink_proto *proto)
 {
-	struct datalink_proto **clients = &snap_list;
-	struct datalink_proto *tmp;
-	unsigned long flags;
-
-	save_flags(flags);
-	cli();
+	br_write_lock_bh(BR_NETPROTO_LOCK);
 
-	while ((tmp = *clients) != NULL) {
-		if (!memcmp(tmp->type, desc, 5)) {
-			*clients = tmp->next;
-			kfree(tmp);
-			break;
-		} else
-			clients = &tmp->next;
-	}
+	list_del(&proto->node);
+	kfree(proto);
 
-	restore_flags(flags);
+	br_write_unlock_bh(BR_NETPROTO_LOCK);
 }
 
 MODULE_LICENSE("GPL");

net/Config.in

@@ -44,13 +44,17 @@ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
 fi
 tristate '802.1Q VLAN Support' CONFIG_VLAN_8021Q
 
-comment ' '
-tristate 'The IPX protocol' CONFIG_IPX
+tristate 'ANSI/IEEE 802.2 Data link layer protocol' CONFIG_LLC
+if [ "$CONFIG_LLC" != "n" ]; then
+   tristate '  LLC sockets interface' CONFIG_LLC_UI
+fi
+
+dep_tristate 'The IPX protocol' CONFIG_IPX $CONFIG_LLC
 if [ "$CONFIG_IPX" != "n" ]; then
    source net/ipx/Config.in
 fi
 
-tristate 'Appletalk protocol support' CONFIG_ATALK
+dep_tristate 'Appletalk protocol support' CONFIG_ATALK $CONFIG_LLC
 source drivers/net/appletalk/Config.in
 
 tristate 'DECnet Support' CONFIG_DECNET
@@ -61,11 +65,6 @@ dep_tristate '802.1d Ethernet Bridging' CONFIG_BRIDGE $CONFIG_INET
 if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
    tristate 'CCITT X.25 Packet Layer (EXPERIMENTAL)' CONFIG_X25
    tristate 'LAPB Data Link Driver (EXPERIMENTAL)' CONFIG_LAPB
-   tristate 'ANSI/IEEE 802.2 Data link layer protocol' CONFIG_LLC
-   if [ "$CONFIG_LLC" != "n" ]; then
-	# When NETBEUI is added the following line will be a tristate
-	define_bool CONFIG_LLC_UI y
-   fi
    bool 'Frame Diverter (EXPERIMENTAL)' CONFIG_NET_DIVERT
    if [ "$CONFIG_INET" = "y" ]; then
       tristate 'Acorn Econet/AUN protocols (EXPERIMENTAL)' CONFIG_ECONET

net/appletalk/aarp.c

@@ -163,11 +163,8 @@ static void __aarp_send_query(struct aarp_entry *a)
 	eah->pa_dst_net	 = a->target_addr.s_net;
 	eah->pa_dst_node = a->target_addr.s_node;
 	
-	/* Add ELAP headers and set target to the AARP multicast */
-	aarp_dl->datalink_header(aarp_dl, skb, aarp_eth_multicast);	
-
 	/* Send it */	
-	dev_queue_xmit(skb);
+	aarp_dl->request(aarp_dl, skb, aarp_eth_multicast);
 	/* Update the sending count */
 	a->xmit_count++;
 }
@@ -213,10 +210,8 @@ static void aarp_send_reply(struct net_device *dev, struct atalk_addr *us,
 	eah->pa_dst_net	 = them->s_net;
 	eah->pa_dst_node = them->s_node;
 	
-	/* Add ELAP headers and set target to the AARP multicast */
-	aarp_dl->datalink_header(aarp_dl, skb, sha);	
 	/* Send it */	
-	dev_queue_xmit(skb);
+	aarp_dl->request(aarp_dl, skb, sha);
 }
 
 /*
@@ -261,10 +256,8 @@ void aarp_send_probe(struct net_device *dev, struct atalk_addr *us)
 	eah->pa_dst_net	 = us->s_net;
 	eah->pa_dst_node = us->s_node;
 
-	/* Add ELAP headers and set target to the AARP multicast */
-	aarp_dl->datalink_header(aarp_dl, skb, aarp_eth_multicast);
 	/* Send it */
-	dev_queue_xmit(skb);
+	aarp_dl->request(aarp_dl, skb, aarp_eth_multicast);
 }
 	
 /*
@@ -602,8 +595,9 @@ int aarp_send_ddp(struct net_device *dev,struct sk_buff *skb,
 	
 	/* Do we have a resolved entry? */
 	if (sa->s_node == ATADDR_BCAST) {
-		ddp_dl->datalink_header(ddp_dl, skb, ddp_eth_multicast);
-		goto sendit;
+		/* Send it */
+		ddp_dl->request(ddp_dl, skb, ddp_eth_multicast);
+		goto sent;
 	}
 
 	spin_lock_bh(&aarp_lock);
@@ -611,9 +605,9 @@ int aarp_send_ddp(struct net_device *dev,struct sk_buff *skb,
 
 	if (a) { /* Return 1 and fill in the address */
 		a->expires_at = jiffies + (sysctl_aarp_expiry_time * 10);
-		ddp_dl->datalink_header(ddp_dl, skb, a->hwaddr);
+		ddp_dl->request(ddp_dl, skb, a->hwaddr);
 		spin_unlock_bh(&aarp_lock);
-		goto sendit;
+		goto sent;
 	}
 
 	/* Do we have an unresolved entry: This is the less common path */
@@ -663,6 +657,7 @@ int aarp_send_ddp(struct net_device *dev,struct sk_buff *skb,
 	if (skb->sk)
 		skb->priority = skb->sk->priority;
 	dev_queue_xmit(skb);
+sent:
 	return 1;
 }
 
@@ -690,10 +685,7 @@ static void __aarp_resolved(struct aarp_entry **list, struct aarp_entry *a,
 			while ((skb = skb_dequeue(&a->packet_queue)) != NULL) {
 				a->expires_at = jiffies +
 						sysctl_aarp_expiry_time * 10;
-				ddp_dl->datalink_header(ddp_dl, skb, a->hwaddr);
-				if (skb->sk)
-					skb->priority = skb->sk->priority;
-				dev_queue_xmit(skb);
+				ddp_dl->request(ddp_dl, skb, a->hwaddr);
 			}
 		} else 
 			list = &((*list)->next);
@@ -989,7 +981,7 @@ void aarp_cleanup_module(void)
 {
 	del_timer(&aarp_timer);
 	unregister_netdevice_notifier(&aarp_notifier);
-	unregister_snap_client(aarp_snap_id);
+	unregister_snap_client(aarp_dl);
 }
 #endif  /* MODULE */
 #ifdef CONFIG_PROC_FS

net/appletalk/ddp.c

@@ -1782,13 +1782,7 @@ static int atalk_sendmsg(struct socket *sock, struct msghdr *msg, int len,
 		SOCK_DEBUG(sk, "SK %p: Loop back.\n", sk);
 		/* loop back */
 		skb_orphan(skb);
-		ddp_dl->datalink_header(ddp_dl, skb, dev->dev_addr);
-		skb->mac.raw = skb->data;
-		skb->h.raw   = skb->data + ddp_dl->header_length +
-				dev->hard_header_len;
-		skb_pull(skb, dev->hard_header_len);
-		skb_pull(skb, ddp_dl->header_length);
-		atalk_rcv(skb, dev, NULL);
+		ddp_dl->request(ddp_dl, skb, dev->dev_addr);
 	} else {
 		SOCK_DEBUG(sk, "SK %p: send out.\n", sk);
 		if (rt->flags & RTF_GATEWAY) {
@@ -2040,7 +2034,7 @@ static void __exit atalk_exit(void)
 	unregister_netdevice_notifier(&ddp_notifier);
 	dev_remove_pack(&ltalk_packet_type);
 	dev_remove_pack(&ppptalk_packet_type);
-	unregister_snap_client(ddp_snap_id);
+	unregister_snap_client(ddp_dl);
 	sock_unregister(PF_APPLETALK);
 }
 module_exit(atalk_exit);

net/core/Makefile

@@ -2,8 +2,6 @@
 # Makefile for the Linux networking core.
 #
 
-export-objs := ext8022.o
-
 obj-y := sock.o skbuff.o iovec.o datagram.o scm.o
 
 ifeq ($(CONFIG_SYSCTL),y)
@@ -16,11 +14,6 @@ obj-$(CONFIG_FILTER) += filter.o
 
 obj-$(CONFIG_NET) += dev.o dev_mcast.o dst.o neighbour.o rtnetlink.o utils.o
 
-# See p8022 in net/802/Makefile for config options to check
-ifneq ($(CONFIG_LLC)$(CONFIG_TR)$(CONFIG_IPX)$(CONFIG_ATALK),)
-obj-y += ext8022.o
-endif
-
 obj-$(CONFIG_NETFILTER) += netfilter.o
 obj-$(CONFIG_NET_DIVERT) += dv.o
 obj-$(CONFIG_NET_PROFILE) += profile.o

net/core/ext8022.c

-/*
- * (ext8022.c)
- * 
- * Copyright (c) 1997 by Procom Technology, Inc.
- * 		 2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
- *
- * This program can be redistributed or modified under the terms of the 
- * GNU General Public License as published by the Free Software Foundation.
- * This program is distributed without any warranty or implied warranty
- * of merchantability or fitness for a particular purpose.
- *
- * See the GNU General Public License for more details.
- */
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <linux/brlock.h>
-
-typedef int (*func_type)(struct sk_buff *skb, struct net_device *dev,
-			 struct packet_type *pt);
-static int llc_rcv(struct sk_buff *skb, struct net_device *dev,
-		   struct packet_type *);
-
-static func_type llc_sap_table[128];
-static int llc_users;
-
-static struct packet_type llc_packet_type = {
-	.type =	__constant_htons(ETH_P_802_2),
-	.func =	llc_rcv,
-};
-static struct packet_type llc_tr_packet_type = {
-	.type =	__constant_htons(ETH_P_TR_802_2),
-	.func =	llc_rcv,
-};
-
-static int llc_rcv(struct sk_buff *skb, struct net_device *dev,
-		   struct packet_type *pt)
-{
- 	unsigned char n = (*(skb->h.raw)) >> 1;
-
-	br_read_lock(BR_LLC_LOCK);
-	if (llc_sap_table[n])
-            llc_sap_table[n](skb, dev, pt);
-        else
-            kfree_skb(skb);
-	br_read_unlock(BR_LLC_LOCK);
-        return 0;
-}
-
-void llc_register_sap(unsigned char sap, func_type rcvfunc)
-{
-	sap >>= 1;
-	br_write_lock_bh(BR_LLC_LOCK);
-	llc_sap_table[sap] = rcvfunc;            
-	if (!llc_users) {
-		dev_add_pack(&llc_packet_type);
-		dev_add_pack(&llc_tr_packet_type);
-        }
-	llc_users++;
-	br_write_unlock_bh(BR_LLC_LOCK);
-}
-
-void llc_unregister_sap(unsigned char sap)
-{
-	sap >>= 1;
-	br_write_lock_bh(BR_LLC_LOCK);
-        llc_sap_table[sap] = NULL;
-	if (!--llc_users) {
-		dev_remove_pack(&llc_packet_type);
-		dev_remove_pack(&llc_tr_packet_type);
-        } 
-	br_write_unlock_bh(BR_LLC_LOCK);
-}
-
-EXPORT_SYMBOL(llc_register_sap);
-EXPORT_SYMBOL(llc_unregister_sap);

net/ethernet/pe2.c

@@ -4,8 +4,7 @@
 #include <linux/mm.h>
 #include <linux/in.h>
 
-static void
-pEII_datalink_header(struct datalink_proto *dl, 
+static int pEII_request(struct datalink_proto *dl, 
 		struct sk_buff *skb, unsigned char *dest_node)
 {
 	struct net_device	*dev = skb->dev;
@@ -13,6 +12,7 @@ pEII_datalink_header(struct datalink_proto *dl,
 	skb->protocol = htons (ETH_P_IPX);
 	if(dev->hard_header)
 		dev->hard_header(skb, dev, ETH_P_IPX, dest_node, NULL, skb->len);
+	return dev_queue_xmit(skb);
 }
 
 struct datalink_proto *
@@ -22,10 +22,8 @@ make_EII_client(void)
 
 	proto = (struct datalink_proto *) kmalloc(sizeof(*proto), GFP_ATOMIC);
 	if (proto != NULL) {
-		proto->type_len = 0;
 		proto->header_length = 0;
-		proto->datalink_header = pEII_datalink_header;
-		proto->string_name = "EtherII";
+		proto->request = pEII_request;
 	}
 
 	return proto;

net/ipx/af_ipx.c

@@ -777,10 +777,9 @@ static int ipxitf_send(struct ipx_interface *intrfc, struct sk_buff *skb,
 	/* set up data link and physical headers */
 	skb->dev	= dev;
 	skb->protocol	= htons(ETH_P_IPX);
-	dl->datalink_header(dl, skb, dest_node);
 
 	/* Send it out */
-	dev_queue_xmit(skb);
+	dl->request(dl, skb, dest_node);
 out:	return 0;
 }
 
@@ -2253,6 +2252,22 @@ drop:	kfree_skb(skb);
 out:	return ret;
 }
 
+static int ipx_8022_indicate(struct llc_prim_if_block *prim)
+{
+	int rc = 1;
+	static struct packet_type p8022_packet_type = {
+		.type = __constant_htons(ETH_P_802_2),
+	};
+
+	if (prim->prim == LLC_DATAUNIT_PRIM) {
+		struct sk_buff *skb = prim->data->udata.skb;
+
+		rc = ipx_rcv(skb, skb->dev, &p8022_packet_type);
+	}
+						
+	return rc;
+}
+
 static int ipx_sendmsg(struct socket *sock, struct msghdr *msg, int len,
 	struct scm_cookie *scm)
 {
@@ -2545,7 +2560,7 @@ static int __init ipx_init(void)
 	else
 		printk(ipx_8023_err_msg);
 
-	p8022_datalink = register_8022_client(ipx_8022_type, ipx_rcv);
+	p8022_datalink = register_8022_client(ipx_8022_type, ipx_8022_indicate);
 	if (!p8022_datalink)
 		printk(ipx_llc_err_msg);
 
@@ -2593,10 +2608,10 @@ static void __exit ipx_proto_finito(void)
 
 	unregister_netdevice_notifier(&ipx_dev_notifier);
 
-	unregister_snap_client(ipx_snap_id);
+	unregister_snap_client(pSNAP_datalink);
 	pSNAP_datalink = NULL;
 
-	unregister_8022_client(ipx_8022_type);
+	unregister_8022_client(p8022_datalink);
 	p8022_datalink = NULL;
 
 	dev_remove_pack(&ipx_8023_packet_type);

net/llc/llc_c_ac.c

@@ -106,7 +106,7 @@ int llc_conn_ac_conn_confirm(struct sock *sk, struct llc_conn_state_ev *ev)
 	if (skb)
 		prim_data->conn.dev    = skb->dev;
 	else
-		printk(KERN_ERR __FUNCTION__ "ev->data.pdu.skb == NULL\n");
+		printk(KERN_ERR "%s: ev->data.pdu.skb == NULL\n", __FUNCTION__);
 	prim->data   = prim_data;
 	prim->prim   = LLC_CONN_PRIM;
 	prim->sap    = sap;

net/llc/llc_conn.c

@@ -82,7 +82,7 @@ int llc_conn_send_ev(struct sock *sk, struct llc_conn_state_ev *ev)
 	/* check if the connection was freed by the state machine by
 	 * means of llc_conn_disc */
 	if (rc == 2) {
-		printk(KERN_INFO __FUNCTION__ ": rc == 2\n");
+		printk(KERN_INFO "%s: rc == 2\n", __FUNCTION__);
 		rc = -ECONNABORTED;
 		goto out;
 	}

net/llc/llc_if.c

@@ -41,12 +41,6 @@ static int llc_conn_rsp_handler(struct llc_prim_if_block *prim);
 static int llc_rst_rsp_handler(struct llc_prim_if_block *prim);
 static int llc_no_rsp_handler(struct llc_prim_if_block *prim);
 
-extern void llc_register_sap(unsigned char sap,
-			     int (*rcvfunc)(struct sk_buff *skb,
-					    struct net_device *dev,
-					    struct packet_type *pt));
-extern void llc_unregister_sap(unsigned char sap);
-
 /* table of request handler functions */
 static llc_prim_call_t llc_req_prim[LLC_NBR_PRIMITIVES] = {
 	[LLC_DATAUNIT_PRIM]	= llc_unitdata_req_handler,
@@ -105,7 +99,6 @@ struct llc_sap *llc_sap_open(llc_prim_call_t nw_indicate,
 	sap->parent_station = llc_station_get();
 	/* initialized SAP; add it to list of SAPs this station manages */
 	llc_sap_save(sap);
-	llc_register_sap(lsap, mac_indicate);
 out:
 	return sap;
 err:
@@ -122,7 +115,6 @@ struct llc_sap *llc_sap_open(llc_prim_call_t nw_indicate,
  */
 void llc_sap_close(struct llc_sap *sap)
 {
-	llc_unregister_sap(sap->laddr.lsap);
 	llc_free_sap(sap);
 	MOD_DEC_USE_COUNT;
 }
@@ -141,7 +133,7 @@ static int llc_sap_req(struct llc_prim_if_block *prim)
 	int rc = 1;
 
 	if (prim->prim > 8 || prim->prim == 6) {
-		printk(KERN_ERR __FUNCTION__ ": invalid primitive %d\n",
+		printk(KERN_ERR "%s: invalid primitive %d\n", __FUNCTION__,
 			prim->prim);
 		goto out;
 	}

net/llc/llc_mac.c

@@ -46,7 +46,7 @@ int mac_send_pdu(struct sk_buff *skb)
 	int pri = GFP_ATOMIC, rc = -1;
 
 	if (!skb->dev) {
-		printk(KERN_ERR __FUNCTION__ ": skb->dev == NULL!");
+		printk(KERN_ERR "%s: skb->dev == NULL!", __FUNCTION__);
 		goto out;
 	}
 	if (skb->sk)
@@ -83,7 +83,7 @@ int mac_indicate(struct sk_buff *skb, struct net_device *dev,
 	 * receives, do not try to analyse it.
 	 */
 	if (skb->pkt_type == PACKET_OTHERHOST) {
-		printk(KERN_INFO __FUNCTION__ ": PACKET_OTHERHOST\n");
+		printk(KERN_INFO "%s: PACKET_OTHERHOST\n", __FUNCTION__);
 		goto drop;
 	}
 	skb = skb_share_check(skb, GFP_ATOMIC);
@@ -92,18 +92,21 @@ int mac_indicate(struct sk_buff *skb, struct net_device *dev,
 	fix_up_incoming_skb(skb);
 	pdu = (struct llc_pdu_sn *)skb->nh.raw;
 	if (!pdu->dsap) { /* NULL DSAP, refer to station */
-		llc_pdu_router(NULL, NULL, skb, 0);
+		if (llc_pdu_router(NULL, NULL, skb, 0))
+			goto drop;
 		goto out;
 	}
 	sap = llc_sap_find(pdu->dsap);
 	if (!sap) /* unknown SAP */
 		goto drop;
 	llc_decode_pdu_type(skb, &dest);
-	if (dest == LLC_DEST_SAP) /* type 1 services */
-		llc_pdu_router(sap, NULL, skb, LLC_TYPE_1);
-	else if (dest == LLC_DEST_CONN) {
+	if (dest == LLC_DEST_SAP) { /* type 1 services */
+		if (llc_pdu_router(sap, NULL, skb, LLC_TYPE_1))
+			goto drop;
+	} else if (dest == LLC_DEST_CONN) {
 		struct llc_addr saddr, daddr;
 		struct sock *sk;
+		int rc;
 
 		llc_pdu_decode_sa(skb, saddr.mac);
 		llc_pdu_decode_ssap(skb, &saddr.lsap);
@@ -134,14 +137,17 @@ int mac_indicate(struct sk_buff *skb, struct net_device *dev,
 			 * in the llc_req_prim (llc_data_req_handler, etc) and
 			 * add the request to the backlog, well see...
 			 */
-			llc_pdu_router(llc_sk(sk)->sap, sk, skb, LLC_TYPE_2);
-			bh_unlock_sock(sk);
+			rc = llc_pdu_router(llc_sk(sk)->sap, sk, skb,
+					    LLC_TYPE_2);
 		} else {
 			skb->cb[0] = LLC_PACKET;
 			sk_add_backlog(sk, skb);
-			bh_unlock_sock(sk);
+			rc = 0;
 		}
+		bh_unlock_sock(sk);
 		sock_put(sk);
+		if (rc)
+			goto drop;
 	} else /* unknown or not supported pdu */
  		goto drop;
 out:
@@ -208,7 +214,8 @@ int llc_pdu_router(struct llc_sap *sap, struct sock* sk,
 			stat_ev->data.pdu.skb	 = skb;
 			stat_ev->data.pdu.reason = 0;
 			llc_station_send_ev(station, stat_ev);
-		}
+		} else
+			rc = -ENOMEM;
 	} else if (type == LLC_TYPE_1) {
 		struct llc_sap_state_ev *sap_ev = llc_sap_alloc_ev(sap);
 
@@ -217,7 +224,8 @@ int llc_pdu_router(struct llc_sap *sap, struct sock* sk,
 			sap_ev->data.pdu.skb	= skb;
 			sap_ev->data.pdu.reason = 0;
 			llc_sap_send_ev(sap, sap_ev);
-		}
+		} else
+			rc = -ENOMEM;
 	} else if (type == LLC_TYPE_2) {
 		struct llc_conn_state_ev *conn_ev = llc_conn_alloc_ev(sk);
 		struct llc_opt *llc = llc_sk(sk);
@@ -229,8 +237,10 @@ int llc_pdu_router(struct llc_sap *sap, struct sock* sk,
 			conn_ev->data.pdu.skb	 = skb;
 			conn_ev->data.pdu.reason = 0;
 			rc = llc_conn_send_ev(sk, conn_ev);
-		}
-	}
+		} else
+			rc = -ENOMEM;
+	} else
+		rc = -EINVAL;
 	return rc;
 }
 

net/llc/llc_main.c

@@ -50,12 +50,6 @@ static struct llc_station_state_trans *
 					       struct llc_station_state_ev *ev);
 static int llc_rtn_all_conns(struct llc_sap *sap);
 
-extern void llc_register_sap(unsigned char sap,
-			     int (*rcvfunc)(struct sk_buff *skb,
-					    struct net_device *dev,
-					    struct packet_type *pt));
-extern void llc_unregister_sap(unsigned char sap);
-
 static struct llc_station llc_main_station;	/* only one of its kind */
 struct llc_prim_if_block llc_ind_prim, llc_cfm_prim;
 static union llc_u_prim_data llc_ind_data_prim, llc_cfm_data_prim;
@@ -238,7 +232,7 @@ void __llc_sock_free(struct sock *sk, u8 free)
 	/* stop all (possibly) running timers */
 	llc_conn_ac_stop_all_timers(sk, NULL);
 	/* handle return of frames on lists */
-	printk(KERN_INFO __FUNCTION__ ": unackq=%d, txq=%d\n",
+	printk(KERN_INFO "%s: unackq=%d, txq=%d\n", __FUNCTION__,
 		skb_queue_len(&llc->pdu_unack_q),
 		skb_queue_len(&sk->write_queue));
 	skb_queue_purge(&sk->write_queue);
@@ -580,6 +574,18 @@ static int llc_proc_get_info(char *bf, char **start, off_t offset, int length)
 	return len;
 }
 
+static struct packet_type llc_packet_type = {
+	.type = __constant_htons(ETH_P_802_2),
+	.func = mac_indicate,
+	.data = (void *)1;
+};
+
+static struct packet_type llc_tr_packet_type = {
+	.type = __constant_htons(ETH_P_TR_802_2),
+	.func = mac_indicate,
+	.data = (void *)1;
+};
+
 static char llc_banner[] __initdata =
 		KERN_INFO "LLC 2.0 by Procom, 1997, Arnaldo C. Melo, 2001\n"
 		KERN_INFO "NET4.0 IEEE 802.2 extended support\n";
@@ -615,9 +621,9 @@ static int __init llc_init(void)
 	llc_ind_prim.data = &llc_ind_data_prim;
 	llc_cfm_prim.data = &llc_cfm_data_prim;
 	proc_net_create("802.2", 0, llc_proc_get_info);
-	/* initialize the station component */
-	llc_register_sap(0, mac_indicate);
 	llc_ui_init();
+	dev_add_pack(&llc_packet_type);
+	dev_add_pack(&llc_tr_packet_type);
 out:
 	return rc;
 err:
@@ -629,7 +635,8 @@ static int __init llc_init(void)
 static void __exit llc_exit(void)
 {
 	llc_ui_exit();
-	llc_unregister_sap(0);
+	dev_remove_pack(&llc_packet_type);
+	dev_remove_pack(&llc_tr_packet_type);
 	proc_net_remove("802.2");
 }
 

net/llc/llc_sap.c

@@ -169,13 +169,8 @@ void llc_sap_send_pdu(struct llc_sap *sap, struct sk_buff *skb)
  */
 static void llc_sap_free_ev(struct llc_sap *sap, struct llc_sap_state_ev *ev)
 {
-	if (ev->type == LLC_SAP_EV_TYPE_PDU) {
-		struct llc_pdu_un *pdu =
-				(struct llc_pdu_un *)ev->data.pdu.skb->nh.raw;
-
-		if (LLC_U_PDU_CMD(pdu) != LLC_1_PDU_CMD_UI)
+	if (ev->type == LLC_SAP_EV_TYPE_PDU)
 		kfree_skb(ev->data.pdu.skb);
-	}
 	kfree(ev);
 }
 

net/llc/llc_sock.c

@@ -43,8 +43,6 @@
 #include <linux/rtnetlink.h>
 #include <linux/init.h>
 
-#define dprintk(format, a...) printk(KERN_INFO __FUNCTION__ ": " format, ##a)
-
 /* remember: uninitialized global data is zeroed because its in .bss */
 static u16 llc_ui_sap_last_autoport = LLC_SAP_DYN_START;
 static u16 llc_ui_sap_link_no_max[256];
@@ -527,8 +525,6 @@ static int llc_ui_release(struct socket *sock)
 	llc_ui_remove_socket(sk);
 	if (llc_ui->sap && !llc_ui_find_sap(llc_ui->sap->laddr.lsap))
 		llc_sap_close(llc_ui->sap);
-	dprintk("rxq=%d, txq=%d\n", skb_queue_len(&sk->receive_queue),
-		skb_queue_len(&sk->write_queue));
 	sock_orphan(sk);
 	sock->sk = NULL;
 	if (!atomic_read(&sk->wmem_alloc) &&
@@ -1416,10 +1412,8 @@ static void llc_ui_ind_conn(struct llc_prim_if_block *prim)
 	llc_sk(prim_data->sk)->laddr.lsap = prim->sap->laddr.lsap;
 	sk = llc_ui_find_sk_by_addr(&llc_sk(prim_data->sk)->laddr,
 				    &prim_data->saddr, prim_data->dev);
-	if (!sk) {
-		dprintk("llc_ui_find_sk_by_addr failed\n");
+	if (!sk)
 		goto out;
-	}
 	if (sk->type != SOCK_STREAM || sk->state != TCP_LISTEN)
 		goto out_put;
 	if (prim->data->conn.status)
@@ -1469,10 +1463,8 @@ static void llc_ui_ind_data(struct llc_prim_if_block *prim)
 	memcpy(llc_ui->sllc_smac, llc_sk(prim_data->sk)->daddr.mac,
 	       IFHWADDRLEN);
 	/* queue skb to the user. */
-	if (sock_queue_rcv_skb(sk, skb)) {
-		dprintk("sock_queue_rcv_skb failed!\n");
+	if (sock_queue_rcv_skb(sk, skb))
 		kfree_skb(skb);
-	}
 out_put:
 	sock_put(sk);
 out:;
@@ -1550,10 +1542,8 @@ static void llc_ui_conf_conn(struct llc_prim_if_block *prim)
 	struct llc_ui_opt *llc_ui = llc_ui_sk(prim_data->sk);
 	struct sock* sk = llc_core->handler;
 
-	if (!sk) {
-		dprintk("llc_core->handler == NULL!\n");
+	if (!sk)
 		goto out;
-	}
 	sock_hold(sk);
 	if (sk->type != SOCK_STREAM || sk->state != TCP_SYN_SENT)
 		goto out_put;
@@ -1562,8 +1552,6 @@ static void llc_ui_conf_conn(struct llc_prim_if_block *prim)
 		sk->state	  = TCP_ESTABLISHED;
 		llc_ui->core_sk   = prim_data->sk;
 	} else {
-		dprintk("prim->data->conn.status = %d\n",
-			prim->data->conn.status);
 		sk->socket->state = SS_UNCONNECTED;
 		sk->state	  = TCP_CLOSE;
 		llc_ui->core_sk	  = NULL;
@@ -1633,7 +1621,7 @@ static int llc_ui_confirm(struct llc_prim_if_block *prim)
 			llc_ui_conf_disc(prim);		break;
 		case LLC_RESET_PRIM:			break;
 		default:
-			printk(KERN_ERR __FUNCTION__ ": unknown prim %d\n",
+			printk(KERN_ERR "%s: unknown prim %d\n", __FUNCTION__,
 			       prim->prim);
 			break;
 	}