[NET]: Add and use PKT_CAN_SHARE_SKB instead of (void *) 1.

drivers/net/bonding/bond_alb.c

@@ -888,7 +888,7 @@ rlb_initialize(struct bonding *bond)
 	pk_type->type = __constant_htons(ETH_P_ARP);
 	pk_type->dev = bond->device;
 	pk_type->func = rlb_arp_recv;
-	pk_type->data = (void*)1;  /* understand shared skbs */
+	pk_type->data = PKT_CAN_SHARE_SKB;
 
 	dev_add_pack(pk_type);
 

drivers/net/bonding/bond_main.c

@@ -955,7 +955,7 @@ static void bond_register_lacpdu(struct bonding *bond)
 	pk_type->type = PKT_TYPE_LACPDU;
 	pk_type->dev = bond->device;
 	pk_type->func = bond_3ad_lacpdu_recv;
-	pk_type->data = (void*)1;  /* understand shared skbs */
+	pk_type->data = PKT_CAN_SHARE_SKB;
 
 	dev_add_pack(pk_type);
 }

drivers/net/pppoe.c

@@ -468,13 +468,13 @@ static int pppoe_disc_rcv(struct sk_buff *skb,
 static struct packet_type pppoes_ptype = {
 	.type	= __constant_htons(ETH_P_PPP_SES),
 	.func	= pppoe_rcv,
-	.data   = (void *)1,
+	.data   = PKT_CAN_SHARE_SKB,
 };
 
 static struct packet_type pppoed_ptype = {
 	.type	= __constant_htons(ETH_P_PPP_DISC),
 	.func	= pppoe_disc_rcv,
-	.data   = (void *)1,
+	.data   = PKT_CAN_SHARE_SKB,
 };
 
 /***********************************************************************

drivers/net/wan/hdlc_generic.c

@@ -283,7 +283,7 @@ static struct packet_type hdlc_packet_type =
 {
 	.type = __constant_htons(ETH_P_HDLC),
 	.func = hdlc_rcv,
-	.data = (void *)1,
+	.data = PKT_CAN_SHARE_SKB,
 };
 
 

drivers/net/wan/syncppp.c

@@ -1454,7 +1454,7 @@ static int sppp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_t
 struct packet_type sppp_packet_type = {
 	.type	= __constant_htons(ETH_P_WAN_PPP),
 	.func	= sppp_rcv,
-	.data   = (void*)1, /* must be non-NULL to indicate 'new' protocol */
+	.data   = PKT_CAN_SHARE_SKB,
 };
 
 static char banner[] __initdata = 

include/linux/netdevice.h

@@ -477,6 +477,7 @@ struct net_device
  */
 #define SET_NETDEV_DEV(net, pdev)	((net)->class_dev.dev = (pdev))
 
+#define PKT_CAN_SHARE_SKB	((void*)1)
 
 struct packet_type 
 {

net/8021q/vlan.c

@@ -67,7 +67,7 @@ unsigned short vlan_default_dev_flags = 1;
 static struct packet_type vlan_packet_type = {
 	.type = __constant_htons(ETH_P_8021Q),
 	.func = vlan_skb_recv, /* VLAN receive method */
-	.data = (void *)1,     /* understands shared skb */
+	.data = PKT_CAN_SHARE_SKB,
 };
 
 /* End of global variables definitions. */

net/appletalk/ddp.c

@@ -1872,13 +1872,13 @@ static struct notifier_block ddp_notifier = {
 struct packet_type ltalk_packet_type = {
 	.type		= __constant_htons(ETH_P_LOCALTALK),
 	.func		= ltalk_rcv,
-	.data		= (void *)1,
+	.data		= PKT_CAN_SHARE_SKB,
 };
 
 struct packet_type ppptalk_packet_type = {
 	.type		= __constant_htons(ETH_P_PPPTALK),
 	.func		= atalk_rcv,
-	.data		= (void *)1,
+	.data		= PKT_CAN_SHARE_SKB,
 };
 
 static unsigned char ddp_snap_id[] = { 0x08, 0x00, 0x07, 0x80, 0x9B };

net/ax25/af_ax25.c

@@ -1978,7 +1978,7 @@ static struct packet_type ax25_packet_type = {
 	.type	=	__constant_htons(ETH_P_AX25),
 	.dev	=	NULL,				/* All devices */
 	.func	=	ax25_kiss_rcv,
-	.data	=	(void *) 1
+	.data	=	PKT_CAN_SHARE_SKB,
 };
 
 static struct notifier_block ax25_dev_notifier = {

net/core/dev.c

@@ -229,7 +229,7 @@ void dev_add_pack(struct packet_type *pt)
 	spin_lock_bh(&ptype_lock);
 #ifdef CONFIG_NET_FASTROUTE
 	/* Hack to detect packet socket */
-	if (pt->data && (long)(pt->data) != 1) {
+	if (pt->data && pt->data != PKT_CAN_SHARE_SKB) {
 		netdev_fastroute_obstacles++;
 		dev_clear_fastroute(pt->dev);
 	}
@@ -277,7 +277,7 @@ void __dev_remove_pack(struct packet_type *pt)
 	list_for_each_entry(pt1, head, list) {
 		if (pt == pt1) {
 #ifdef CONFIG_NET_FASTROUTE
-			if (pt->data)
+			if (pt->data && pt->data != PKT_CAN_SHARE_SKB)
 				netdev_fastroute_obstacles--;
 #endif
 			list_del_rcu(&pt->list);

net/decnet/af_decnet.c

@@ -2081,7 +2081,7 @@ static struct packet_type dn_dix_packet_type = {
 	.type =		__constant_htons(ETH_P_DNA_RT),
 	.dev =		NULL,		/* All devices */
 	.func =		dn_route_rcv,
-	.data =		(void*)1,
+	.data =		PKT_CAN_SHARE_SKB,
 };
 
 #ifdef CONFIG_PROC_FS

net/ipv4/arp.c

@@ -1108,7 +1108,7 @@ void arp_ifdown(struct net_device *dev)
 static struct packet_type arp_packet_type = {
 	.type =	__constant_htons(ETH_P_ARP),
 	.func =	arp_rcv,
-	.data =	(void*) 1, /* understand shared skbs */
+	.data =	PKT_CAN_SHARE_SKB,
 };
 
 static int arp_proc_init(void);

net/ipv4/ip_output.c

@@ -1299,7 +1299,7 @@ static struct packet_type ip_packet_type =
 	.type = __constant_htons(ETH_P_IP),
 	.dev  = NULL,	/* All devices */
 	.func = ip_rcv,
-	.data = (void*)1,
+	.data = PKT_CAN_SHARE_SKB,
 };
 
 /*

net/ipv6/ipv6_sockglue.c

@@ -62,7 +62,7 @@ static struct packet_type ipv6_packet_type =
 	.type = __constant_htons(ETH_P_IPV6), 
 	.dev  = NULL,				/* All devices */
 	.func = ipv6_rcv,
-	.data = (void*)1,
+	.data = PKT_CAN_SHARE_SKB,
 };
 
 /*

net/ipx/af_ipx.c

@@ -1920,13 +1920,13 @@ SOCKOPS_WRAP(ipx_dgram, PF_IPX);
 static struct packet_type ipx_8023_packet_type = {
 	.type		= __constant_htons(ETH_P_802_3),
 	.func		= ipx_rcv,
-	.data		= (void *)1,	/* yap, I understand shared skbs :-) */
+	.data		= PKT_CAN_SHARE_SKB,
 };
 
 static struct packet_type ipx_dix_packet_type = {
 	.type		= __constant_htons(ETH_P_IPX),
 	.func		= ipx_rcv,
-	.data		= (void *)1,	/* yap, I understand shared skbs :-) */
+	.data		= PKT_CAN_SHARE_SKB,
 };
 
 static struct notifier_block ipx_dev_notifier = {

net/irda/irsyms.c

@@ -191,7 +191,7 @@ static struct packet_type irda_packet_type =
 	.type	= __constant_htons(ETH_P_IRDA),
 	.dev	= NULL,			/* Wildcard : All devices */
 	.func	= irlap_driver_rcv,	/* Packet type handler irlap_frame.c */
-	.data	= (void*) 1,		/* Understand shared skbs */
+	.data	= PKT_CAN_SHARE_SKB,
 	//.next	= NULL,
 };
 

net/llc/llc_core.c

@@ -140,13 +140,13 @@ void llc_sap_close(struct llc_sap *sap)
 static struct packet_type llc_packet_type = {
 	.type = __constant_htons(ETH_P_802_2),
 	.func = llc_rcv,
-	.data = (void *)1,
+	.data = PKT_CAN_SHARE_SKB,
 };
 
 static struct packet_type llc_tr_packet_type = {
 	.type = __constant_htons(ETH_P_TR_802_2),
 	.func = llc_rcv,
-	.data = (void *)1,
+	.data = PKT_CAN_SHARE_SKB,
 };
 
 static int __init llc_init(void)