[NET]: Move hardware header operations out of netdevice.

Since hardware header operations are part of the protocol class
not the device instance, make them into a separate object and
save memory.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

31 files changed, 198 insertions, 222 deletions

diff --git a/drivers/net/appletalk/cops.c b/drivers/net/appletalk/cops.c
index c4b560d42a6..92c3a4cf0bb 100644
--- a/drivers/net/appletalk/cops.c
+++ b/drivers/net/appletalk/cops.c
@@ -194,10 +194,6 @@ static void cops_timeout(struct net_device *dev);
 static void cops_rx (struct net_device *dev);
 static int  cops_send_packet (struct sk_buff *skb, struct net_device *dev);
 static void set_multicast_list (struct net_device *dev);
-static int  cops_hard_header (struct sk_buff *skb, struct net_device *dev,
-			      unsigned short type, void *daddr, void *saddr, 
-			      unsigned len);
-
 static int  cops_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
 static int  cops_close (struct net_device *dev);
 static struct net_device_stats *cops_get_stats (struct net_device *dev);
@@ -331,7 +327,6 @@ static int __init cops_probe1(struct net_device *dev, int ioaddr)
 	dev->base_addr = ioaddr;
 
         lp = netdev_priv(dev);
-        memset(lp, 0, sizeof(struct cops_local));
         spin_lock_init(&lp->lock);
 
 	/* Copy local board variable to lp struct. */
@@ -340,7 +335,7 @@ static int __init cops_probe1(struct net_device *dev, int ioaddr)
 	dev->hard_start_xmit    = cops_send_packet;
 	dev->tx_timeout		= cops_timeout;
 	dev->watchdog_timeo	= HZ * 2;
-	dev->hard_header	= cops_hard_header;
+
         dev->get_stats          = cops_get_stats;
 	dev->open               = cops_open;
         dev->stop               = cops_close;
@@ -945,19 +940,6 @@ static void set_multicast_list(struct net_device *dev)
 }
 
 /*
- *      Another Dummy function to keep the Appletalk layer happy.
- */
- 
-static int cops_hard_header(struct sk_buff *skb, struct net_device *dev,
-			    unsigned short type, void *daddr, void *saddr, 
-			    unsigned len)
-{
-        if(cops_debug >= 3)
-                printk("%s: cops_hard_header executed. Wow!\n", dev->name);
-        return 0;
-}
-
-/*
  *      System ioctls for the COPS LocalTalk card.
  */
  
diff --git a/drivers/net/appletalk/ltpc.c b/drivers/net/appletalk/ltpc.c
index cb4744e5690..6ab2c2d4d67 100644
--- a/drivers/net/appletalk/ltpc.c
+++ b/drivers/net/appletalk/ltpc.c
@@ -870,15 +870,6 @@ static void set_multicast_list(struct net_device *dev)
 	/* Actually netatalk needs fixing! */
 }
 
-static int ltpc_hard_header (struct sk_buff *skb, struct net_device *dev, 
-	unsigned short type, void *daddr, void *saddr, unsigned len)
-{
-	if(debug & DEBUG_VERBOSE)
-		printk("ltpc_hard_header called for device %s\n",
-			dev->name);
-	return 0;
-}
-
 static int ltpc_poll_counter;
 
 static void ltpc_poll(unsigned long l)
@@ -1141,7 +1132,6 @@ struct net_device * __init ltpc_probe(void)
 
 	/* Fill in the fields of the device structure with ethernet-generic values. */
 	dev->hard_start_xmit = ltpc_xmit;
-	dev->hard_header = ltpc_hard_header;
 	dev->get_stats = ltpc_get_stats;
 
 	/* add the ltpc-specific things */
diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c
index 681e20b8466..c59c8067de9 100644
--- a/drivers/net/arcnet/arcnet.c
+++ b/drivers/net/arcnet/arcnet.c
@@ -102,8 +102,8 @@ static int arcnet_close(struct net_device *dev);
 static int arcnet_send_packet(struct sk_buff *skb, struct net_device *dev);
 static void arcnet_timeout(struct net_device *dev);
 static int arcnet_header(struct sk_buff *skb, struct net_device *dev,
-			 unsigned short type, void *daddr, void *saddr,
-			 unsigned len);
+			 unsigned short type, const void *daddr,
+			 const void *saddr, unsigned len);
 static int arcnet_rebuild_header(struct sk_buff *skb);
 static struct net_device_stats *arcnet_get_stats(struct net_device *dev);
 static int go_tx(struct net_device *dev);
@@ -317,11 +317,17 @@ static int choose_mtu(void)
 	return mtu == 65535 ? XMTU : mtu;
 }
 
+static const struct header_ops arcnet_header_ops = {
+	.create = arcnet_header,
+	.rebuild = arcnet_rebuild_header,
+};
+
 
 /* Setup a struct device for ARCnet. */
 static void arcdev_setup(struct net_device *dev)
 {
 	dev->type = ARPHRD_ARCNET;
+	dev->header_ops = &arcnet_header_ops;
 	dev->hard_header_len = sizeof(struct archdr);
 	dev->mtu = choose_mtu();
 
@@ -342,8 +348,6 @@ static void arcdev_setup(struct net_device *dev)
 	dev->hard_start_xmit = arcnet_send_packet;
 	dev->tx_timeout = arcnet_timeout;
 	dev->get_stats = arcnet_get_stats;
-	dev->hard_header = arcnet_header;
-	dev->rebuild_header = arcnet_rebuild_header;
 }
 
 struct net_device *alloc_arcdev(char *name)
@@ -488,10 +492,10 @@ static int arcnet_close(struct net_device *dev)
 
 
 static int arcnet_header(struct sk_buff *skb, struct net_device *dev,
-			 unsigned short type, void *daddr, void *saddr,
-			 unsigned len)
+			 unsigned short type, const void *daddr,
+			 const void *saddr, unsigned len)
 {
-	struct arcnet_local *lp = dev->priv;
+	const struct arcnet_local *lp = netdev_priv(dev);
 	uint8_t _daddr, proto_num;
 	struct ArcProto *proto;
 
diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
index 0a847326a5e..ecd156def03 100644
--- a/drivers/net/hamradio/6pack.c
+++ b/drivers/net/hamradio/6pack.c
@@ -288,7 +288,8 @@ static int sp_close(struct net_device *dev)
 
 /* Return the frame type ID */
 static int sp_header(struct sk_buff *skb, struct net_device *dev,
-	unsigned short type, void *daddr, void *saddr, unsigned len)
+		     unsigned short type, const void *daddr,
+		     const void *saddr, unsigned len)
 {
 #ifdef CONFIG_INET
 	if (type != htons(ETH_P_AX25))
@@ -323,6 +324,11 @@ static int sp_rebuild_header(struct sk_buff *skb)
 #endif
 }
 
+static const struct header_ops sp_header_ops = {
+	.create		= sp_header,
+	.rebuild	= sp_rebuild_header,
+};
+
 static void sp_setup(struct net_device *dev)
 {
 	/* Finish setting up the DEVICE info. */
@@ -331,14 +337,15 @@ static void sp_setup(struct net_device *dev)
 	dev->open		= sp_open_dev;
 	dev->destructor		= free_netdev;
 	dev->stop		= sp_close;
-	dev->hard_header	= sp_header;
+
 	dev->get_stats	        = sp_get_stats;
 	dev->set_mac_address    = sp_set_mac_address;
 	dev->hard_header_len	= AX25_MAX_HEADER_LEN;
+	dev->header_ops 	= &sp_header_ops;
+
 	dev->addr_len		= AX25_ADDR_LEN;
 	dev->type		= ARPHRD_AX25;
 	dev->tx_queue_len	= 10;
-	dev->rebuild_header	= sp_rebuild_header;
 	dev->tx_timeout		= NULL;
 
 	/* Only activated in AX.25 mode */
diff --git a/drivers/net/hamradio/baycom_epp.c b/drivers/net/hamradio/baycom_epp.c
index 355c6cf3d11..1a5a75acf73 100644
--- a/drivers/net/hamradio/baycom_epp.c
+++ b/drivers/net/hamradio/baycom_epp.c
@@ -1159,8 +1159,7 @@ static void baycom_probe(struct net_device *dev)
 	/* Fill in the fields of the device structure */
 	bc->skb = NULL;
 	
-	dev->hard_header = ax25_hard_header;
-	dev->rebuild_header = ax25_rebuild_header;
+	dev->header_ops = &ax25_header_ops;
 	dev->set_mac_address = baycom_set_mac_address;
 	
 	dev->type = ARPHRD_AX25;           /* AF_AX25 device */
diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
index 4bff23e3b97..5ddf8b0c34f 100644
--- a/drivers/net/hamradio/bpqether.c
+++ b/drivers/net/hamradio/bpqether.c
@@ -483,8 +483,7 @@ static void bpq_setup(struct net_device *dev)
 	dev->flags      = 0;
 
 #if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
-	dev->hard_header     = ax25_hard_header;
-	dev->rebuild_header  = ax25_rebuild_header;
+	dev->header_ops      = &ax25_header_ops;
 #endif
 
 	dev->type            = ARPHRD_AX25;
diff --git a/drivers/net/hamradio/dmascc.c b/drivers/net/hamradio/dmascc.c
index 205f0967249..bc02e469480 100644
--- a/drivers/net/hamradio/dmascc.c
+++ b/drivers/net/hamradio/dmascc.c
@@ -581,8 +581,7 @@ static int __init setup_adapter(int card_base, int type, int n)
 		dev->do_ioctl = scc_ioctl;
 		dev->hard_start_xmit = scc_send_packet;
 		dev->get_stats = scc_get_stats;
-		dev->hard_header = ax25_hard_header;
-		dev->rebuild_header = ax25_rebuild_header;
+		dev->header_ops = &ax25_header_ops;
 		dev->set_mac_address = scc_set_mac_address;
 	}
 	if (register_netdev(info->dev[0])) {
diff --git a/drivers/net/hamradio/hdlcdrv.c b/drivers/net/hamradio/hdlcdrv.c
index b33adc6a340..ae9629fa688 100644
--- a/drivers/net/hamradio/hdlcdrv.c
+++ b/drivers/net/hamradio/hdlcdrv.c
@@ -682,8 +682,7 @@ static void hdlcdrv_setup(struct net_device *dev)
 
 	s->skb = NULL;
 	
-	dev->hard_header = ax25_hard_header;
-	dev->rebuild_header = ax25_rebuild_header;
+	dev->header_ops = &ax25_header_ops;
 	dev->set_mac_address = hdlcdrv_set_mac_address;
 	
 	dev->type = ARPHRD_AX25;           /* AF_AX25 device */
diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index d08fbc39664..9e43c47691c 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -578,8 +578,9 @@ static int ax_open_dev(struct net_device *dev)
 #if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
 
 /* Return the frame type ID */
-static int ax_header(struct sk_buff *skb, struct net_device *dev, unsigned short type,
-	  void *daddr, void *saddr, unsigned len)
+static int ax_header(struct sk_buff *skb, struct net_device *dev,
+		     unsigned short type, const void *daddr,
+		     const void *saddr, unsigned len)
 {
 #ifdef CONFIG_INET
 	if (type != htons(ETH_P_AX25))
@@ -670,6 +671,11 @@ static struct net_device_stats *ax_get_stats(struct net_device *dev)
 	return &ax->stats;
 }
 
+static const struct header_ops ax_header_ops = {
+	.create    = ax_header,
+	.rebuild   = ax_rebuild_header,
+};
+
 static void ax_setup(struct net_device *dev)
 {
 	/* Finish setting up the DEVICE info. */
@@ -683,8 +689,8 @@ static void ax_setup(struct net_device *dev)
 	dev->addr_len        = 0;
 	dev->type            = ARPHRD_AX25;
 	dev->tx_queue_len    = 10;
-	dev->hard_header     = ax_header;
-	dev->rebuild_header  = ax_rebuild_header;
+	dev->header_ops      = &ax_header_ops;
+
 
 	memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
 	memcpy(dev->dev_addr,  &ax25_defaddr,  AX25_ADDR_LEN);
diff --git a/drivers/net/hamradio/scc.c b/drivers/net/hamradio/scc.c
index 39b3b82aa4a..353d13e543c 100644
--- a/drivers/net/hamradio/scc.c
+++ b/drivers/net/hamradio/scc.c
@@ -1551,8 +1551,8 @@ static void scc_net_setup(struct net_device *dev)
 	dev->stop	     = scc_net_close;
 
 	dev->hard_start_xmit = scc_net_tx;
-	dev->hard_header     = ax25_hard_header;
-	dev->rebuild_header  = ax25_rebuild_header;
+	dev->header_ops      = &ax25_header_ops;
+
 	dev->set_mac_address = scc_net_set_mac_address;
 	dev->get_stats       = scc_net_get_stats;
 	dev->do_ioctl        = scc_net_ioctl;
diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c
index 401724ddafc..1c942862a3f 100644
--- a/drivers/net/hamradio/yam.c
+++ b/drivers/net/hamradio/yam.c
@@ -1097,8 +1097,7 @@ static void yam_setup(struct net_device *dev)
 
 	skb_queue_head_init(&yp->send_queue);
 
-	dev->hard_header = ax25_hard_header;
-	dev->rebuild_header = ax25_rebuild_header;
+	dev->header_ops = &ax25_header_ops;
 
 	dev->set_mac_address = yam_set_mac_address;
 
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index f11120b7a3b..b6d4ae3ad50 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -221,22 +221,17 @@ static void loopback_dev_free(struct net_device *dev)
 }
 
 /*
- * The loopback device is special. There is only one instance and
- * it is statically allocated. Don't do this for other devices.
+ * The loopback device is special. There is only one instance.
  */
 static void loopback_setup(struct net_device *dev)
 {
 	dev->get_stats		= &get_stats;
 	dev->mtu		= (16 * 1024) + 20 + 20 + 12;
 	dev->hard_start_xmit	= loopback_xmit;
-	dev->hard_header	= eth_header;
-	dev->hard_header_cache	= eth_header_cache;
-	dev->header_cache_update = eth_header_cache_update;
 	dev->hard_header_len	= ETH_HLEN;	/* 14	*/
 	dev->addr_len		= ETH_ALEN;	/* 6	*/
 	dev->tx_queue_len	= 0;
 	dev->type		= ARPHRD_LOOPBACK;	/* 0x0001*/
-	dev->rebuild_header	= eth_rebuild_header;
 	dev->flags		= IFF_LOOPBACK;
 	dev->features 		= NETIF_F_SG | NETIF_F_FRAGLIST
 #ifdef LOOPBACK_TSO
@@ -247,6 +242,7 @@ static void loopback_setup(struct net_device *dev)
 		| NETIF_F_LLTX
 		| NETIF_F_NETNS_LOCAL,
 	dev->ethtool_ops	= &loopback_ethtool_ops;
+	dev->header_ops		= &eth_header_ops;
 	dev->init = loopback_dev_init;
 	dev->destructor = loopback_dev_free;
 }
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index a22087ca968..b7c81c874f7 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -164,8 +164,8 @@ static int macvlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 }
 
 static int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev,
-			       unsigned short type, void *daddr, void *saddr,
-			       unsigned len)
+			       unsigned short type, const void *daddr,
+			       const void *saddr, unsigned len)
 {
 	const struct macvlan_dev *vlan = netdev_priv(dev);
 	struct net_device *lowerdev = vlan->lowerdev;
@@ -174,6 +174,15 @@ static int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev,
 			       saddr ? : dev->dev_addr, len);
 }
 
+static const struct header_ops macvlan_hard_header_ops = {
+	.create  	= macvlan_hard_header,
+	.rebuild	= eth_rebuild_header,
+	.parse		= eth_header_parse,
+	.rebuild	= eth_rebuild_header,
+	.cache		= eth_header_cache,
+	.cache_update	= eth_header_cache_update,
+};
+
 static int macvlan_open(struct net_device *dev)
 {
 	struct macvlan_dev *vlan = netdev_priv(dev);
@@ -295,9 +304,9 @@ static void macvlan_setup(struct net_device *dev)
 	dev->change_mtu		= macvlan_change_mtu;
 	dev->change_rx_flags	= macvlan_change_rx_flags;
 	dev->set_multicast_list	= macvlan_set_multicast_list;
-	dev->hard_header	= macvlan_hard_header;
 	dev->hard_start_xmit	= macvlan_hard_start_xmit;
 	dev->destructor		= free_netdev;
+	dev->header_ops		= &macvlan_hard_header_ops,
 	dev->ethtool_ops	= &macvlan_ethtool_ops;
 	dev->tx_queue_len	= 0;
 }
diff --git a/drivers/net/myri_sbus.c b/drivers/net/myri_sbus.c
index d68ee51c095..8d29319cc5c 100644
--- a/drivers/net/myri_sbus.c
+++ b/drivers/net/myri_sbus.c
@@ -676,8 +676,9 @@ static int myri_start_xmit(struct sk_buff *skb, struct net_device *dev)
  * saddr=NULL	means use device source address
  * daddr=NULL	means leave destination address (eg unresolved arp)
  */
-static int myri_header(struct sk_buff *skb, struct net_device *dev, unsigned short type,
-		       void *daddr, void *saddr, unsigned len)
+static int myri_header(struct sk_buff *skb, struct net_device *dev,
+		       unsigned short type, const void *daddr,
+		       const void *saddr, unsigned len)
 {
 	struct ethhdr *eth = (struct ethhdr *) skb_push(skb, ETH_HLEN);
 	unsigned char *pad = (unsigned char *) skb_push(skb, MYRI_PAD_LEN);
@@ -759,18 +760,18 @@ static int myri_rebuild_header(struct sk_buff *skb)
 	return 0;
 }
 
-int myri_header_cache(struct neighbour *neigh, struct hh_cache *hh)
+static int myri_header_cache(const struct neighbour *neigh, struct hh_cache *hh)
 {
 	unsigned short type = hh->hh_type;
 	unsigned char *pad;
 	struct ethhdr *eth;
-	struct net_device *dev = neigh->dev;
+	const struct net_device *dev = neigh->dev;
 
 	pad = ((unsigned char *) hh->hh_data) +
 		HH_DATA_OFF(sizeof(*eth) + MYRI_PAD_LEN);
 	eth = (struct ethhdr *) (pad + MYRI_PAD_LEN);
 
-	if (type == __constant_htons(ETH_P_802_3))
+	if (type == htons(ETH_P_802_3))
 		return -1;
 
 	/* Refill MyriNet padding identifiers, this is just being anal. */
@@ -786,7 +787,9 @@ int myri_header_cache(struct neighbour *neigh, struct hh_cache *hh)
 
 
 /* Called by Address Resolution module to notify changes in address. */
-void myri_header_cache_update(struct hh_cache *hh, struct net_device *dev, unsigned char * haddr)
+void myri_header_cache_update(struct hh_cache *hh,
+			      const struct net_device *dev,
+			      const unsigned char * haddr)
 {
 	memcpy(((u8*)hh->hh_data) + HH_DATA_OFF(sizeof(struct ethhdr)),
 	       haddr, dev->addr_len);
@@ -881,6 +884,13 @@ static void dump_eeprom(struct myri_eth *mp)
 }
 #endif
 
+static const struct header_ops myri_header_ops = {
+	.create		= myri_header,
+	.rebuild	= myri_rebuild_header,
+	.cache	 	= myri_header_cache,
+	.cache_update	= myri_header_cache_update,
+};
+
 static int __devinit myri_ether_init(struct sbus_dev *sdev)
 {
 	static int num;
@@ -1065,11 +1075,9 @@ static int __devinit myri_ether_init(struct sbus_dev *sdev)
 
 	dev->mtu		= MYRINET_MTU;
 	dev->change_mtu		= myri_change_mtu;
-	dev->hard_header	= myri_header;
-	dev->rebuild_header	= myri_rebuild_header;
+	dev->header_ops		= &myri_header_ops;
+
 	dev->hard_header_len	= (ETH_HLEN + MYRI_PAD_LEN);
-	dev->hard_header_cache 	= myri_header_cache;
-	dev->header_cache_update= myri_header_cache_update;
 
 	/* Load code onto the LANai. */
 	DET(("Loading LANAI firmware\n"));
diff --git a/drivers/net/plip.c b/drivers/net/plip.c
index c17d9ac9ff3..b5e9981d106 100644
--- a/drivers/net/plip.c
+++ b/drivers/net/plip.c
@@ -148,9 +148,9 @@ static void plip_interrupt(int irq, void *dev_id);
 /* Functions for DEV methods */
 static int plip_tx_packet(struct sk_buff *skb, struct net_device *dev);
 static int plip_hard_header(struct sk_buff *skb, struct net_device *dev,
-                            unsigned short type, void *daddr,
-                            void *saddr, unsigned len);
-static int plip_hard_header_cache(struct neighbour *neigh,
+                            unsigned short type, const void *daddr,
+			    const void *saddr, unsigned len);
+static int plip_hard_header_cache(const struct neighbour *neigh,
                                   struct hh_cache *hh);
 static int plip_open(struct net_device *dev);
 static int plip_close(struct net_device *dev);
@@ -219,11 +219,6 @@ struct net_local {
 	int is_deferred;
 	int port_owner;
 	int should_relinquish;
-	int (*orig_hard_header)(struct sk_buff *skb, struct net_device *dev,
-	                        unsigned short type, void *daddr,
-	                        void *saddr, unsigned len);
-	int (*orig_hard_header_cache)(struct neighbour *neigh,
-	                              struct hh_cache *hh);
 	spinlock_t lock;
 	atomic_t kill_timer;
 	struct semaphore killed_timer_sem;
@@ -265,6 +260,11 @@ static inline unsigned char read_status (struct net_device *dev)
 	return port->ops->read_status (port);
 }
 
+static const struct header_ops plip_header_ops = {
+	.create	= plip_hard_header,
+	.cache  = plip_hard_header_cache,
+};
+
 /* Entry point of PLIP driver.
    Probe the hardware, and register/initialize the driver.
 
@@ -284,17 +284,12 @@ plip_init_netdev(struct net_device *dev)
 	dev->open		 = plip_open;
 	dev->stop		 = plip_close;
 	dev->do_ioctl		 = plip_ioctl;
-	dev->header_cache_update = NULL;
+
 	dev->tx_queue_len 	 = 10;
 	dev->flags	         = IFF_POINTOPOINT|IFF_NOARP;
 	memset(dev->dev_addr, 0xfc, ETH_ALEN);
 
-	/* Set the private structure */
-	nl->orig_hard_header    = dev->hard_header;
-	dev->hard_header        = plip_hard_header;
-
-	nl->orig_hard_header_cache = dev->hard_header_cache;
-	dev->hard_header_cache     = plip_hard_header_cache;
+	dev->header_ops          = &plip_header_ops;
 
 
 	nl->port_owner = 0;
@@ -993,14 +988,14 @@ plip_tx_packet(struct sk_buff *skb, struct net_device *dev)
 }
 
 static void
-plip_rewrite_address(struct net_device *dev, struct ethhdr *eth)
+plip_rewrite_address(const struct net_device *dev, struct ethhdr *eth)
 {
-	struct in_device *in_dev;
+	const struct in_device *in_dev = dev->ip_ptr;
 
-	if ((in_dev=dev->ip_ptr) != NULL) {
+	if (in_dev) {
 		/* Any address will do - we take the first */
-		struct in_ifaddr *ifa=in_dev->ifa_list;
-		if (ifa != NULL) {
+		const struct in_ifaddr *ifa = in_dev->ifa_list;
+		if (ifa) {
 			memcpy(eth->h_source, dev->dev_addr, 6);
 			memset(eth->h_dest, 0xfc, 2);
 			memcpy(eth->h_dest+2, &ifa->ifa_address, 4);
@@ -1010,26 +1005,25 @@ plip_rewrite_address(struct net_device *dev, struct ethhdr *eth)
 
 static int
 plip_hard_header(struct sk_buff *skb, struct net_device *dev,
-                 unsigned short type, void *daddr,
-	         void *saddr, unsigned len)
+		 unsigned short type, const void *daddr,
+		 const void *saddr, unsigned len)
 {
-	struct net_local *nl = netdev_priv(dev);
 	int ret;
 
-	if ((ret = nl->orig_hard_header(skb, dev, type, daddr, saddr, len)) >= 0)
+	ret = eth_header(skb, dev, type, daddr, saddr, len);
+	if (ret >= 0)
 		plip_rewrite_address (dev, (struct ethhdr *)skb->data);
 
 	return ret;
 }
 
-int plip_hard_header_cache(struct neighbour *neigh,
+int plip_hard_header_cache(const struct neighbour *neigh,
                            struct hh_cache *hh)
 {
-	struct net_local *nl = neigh->dev->priv;
 	int ret;
 
-	if ((ret = nl->orig_hard_header_cache(neigh, hh)) == 0)
-	{
+	ret = eth_header_cache(neigh, hh);
+	if (ret == 0) {
 		struct ethhdr *eth;
 
 		eth = (struct ethhdr*)(((u8*)hh->hh_data) +
diff --git a/drivers/net/shaper.c b/drivers/net/shaper.c
index 315feba7dac..228f650250f 100644
--- a/drivers/net/shaper.c
+++ b/drivers/net/shaper.c
@@ -331,15 +331,16 @@ static int shaper_close(struct net_device *dev)
  */
 
 static int shaper_header(struct sk_buff *skb, struct net_device *dev,
-	unsigned short type, void *daddr, void *saddr, unsigned len)
+			 unsigned short type,
+			 const void *daddr, const void *saddr, unsigned len)
 {
 	struct shaper *sh=dev->priv;
 	int v;
 	if(sh_debug)
 		printk("Shaper header\n");
-	skb->dev=sh->dev;
-	v=sh->hard_header(skb,sh->dev,type,daddr,saddr,len);
-	skb->dev=dev;
+	skb->dev = sh->dev;
+	v = dev_hard_header(skb, sh->dev, type, daddr, saddr, len);
+	skb->dev = dev;
 	return v;
 }
 
@@ -351,7 +352,7 @@ static int shaper_rebuild_header(struct sk_buff *skb)
 	if(sh_debug)
 		printk("Shaper rebuild header\n");
 	skb->dev=sh->dev;
-	v=sh->rebuild_header(skb);
+	v = sh->dev->header_ops->rebuild(skb);
 	skb->dev=dev;
 	return v;
 }
@@ -415,51 +416,17 @@ static int shaper_neigh_setup_dev(struct net_device *dev, struct neigh_parms *p)
 
 #endif
 
+static const struct header_ops shaper_ops = {
+	.create	 = shaper_header,
+	.rebuild = shaper_rebuild_header,
+};
+
 static int shaper_attach(struct net_device *shdev, struct shaper *sh, struct net_device *dev)
 {
 	sh->dev = dev;
-	sh->hard_start_xmit=dev->hard_start_xmit;
 	sh->get_stats=dev->get_stats;
-	if(dev->hard_header)
-	{
-		sh->hard_header=dev->hard_header;
-		shdev->hard_header = shaper_header;
-	}
-	else
-		shdev->hard_header = NULL;
 
-	if(dev->rebuild_header)
-	{
-		sh->rebuild_header	= dev->rebuild_header;
-		shdev->rebuild_header	= shaper_rebuild_header;
-	}
-	else
-		shdev->rebuild_header	= NULL;
-
-#if 0
-	if(dev->hard_header_cache)
-	{
-		sh->hard_header_cache	= dev->hard_header_cache;
-		shdev->hard_header_cache= shaper_cache;
-	}
-	else
-	{
-		shdev->hard_header_cache= NULL;
-	}
-
-	if(dev->header_cache_update)
-	{
-		sh->header_cache_update	= dev->header_cache_update;
-		shdev->header_cache_update = shaper_cache_update;
-	}
-	else
-		shdev->header_cache_update= NULL;
-#else
-	shdev->header_cache_update = NULL;
-	shdev->hard_header_cache = NULL;
-#endif
 	shdev->neigh_setup = shaper_neigh_setup_dev;
-
 	shdev->hard_header_len=dev->hard_header_len;
 	shdev->type=dev->type;
 	shdev->addr_len=dev->addr_len;
@@ -542,12 +509,6 @@ static void __init shaper_setup(struct net_device *dev)
 	 *	Handlers for when we attach to a device.
 	 */
 
-	dev->hard_header 	= shaper_header;
-	dev->rebuild_header 	= shaper_rebuild_header;
-#if 0
-	dev->hard_header_cache	= shaper_cache;
-	dev->header_cache_update= shaper_cache_update;
-#endif
 	dev->neigh_setup	= shaper_neigh_setup_dev;
 	dev->do_ioctl		= shaper_ioctl;
 	dev->hard_header_len	= 0;
diff --git a/drivers/net/skfp/skfddi.c b/drivers/net/skfp/skfddi.c
index ca508708229..7cf9b9f35de 100644
--- a/drivers/net/skfp/skfddi.c
+++ b/drivers/net/skfp/skfddi.c
@@ -260,7 +260,6 @@ static int skfp_init_one(struct pci_dev *pdev,
 	dev->set_multicast_list = &skfp_ctl_set_multicast_list;
 	dev->set_mac_address = &skfp_ctl_set_mac_address;
 	dev->do_ioctl = &skfp_ioctl;
-	dev->header_cache_update = NULL;	/* not supported */
 
 	SET_NETDEV_DEV(dev, &pdev->dev);
 
diff --git a/drivers/net/wan/cycx_x25.c b/drivers/net/wan/cycx_x25.c
index 46e053106d4..8a1778cf98d 100644
--- a/drivers/net/wan/cycx_x25.c
+++ b/drivers/net/wan/cycx_x25.c
@@ -131,14 +131,15 @@ static int cycx_wan_update(struct wan_device *wandev),
 	   cycx_wan_del_if(struct wan_device *wandev, struct net_device *dev);
 
 /* Network device interface */
-static int cycx_netdevice_init(struct net_device *dev),
-	   cycx_netdevice_open(struct net_device *dev),
-	   cycx_netdevice_stop(struct net_device *dev),
-	   cycx_netdevice_hard_header(struct sk_buff *skb,
-				     struct net_device *dev, u16 type,
-				     void *daddr, void *saddr, unsigned len),
-	   cycx_netdevice_rebuild_header(struct sk_buff *skb),
-	   cycx_netdevice_hard_start_xmit(struct sk_buff *skb,
+static int cycx_netdevice_init(struct net_device *dev);
+static int cycx_netdevice_open(struct net_device *dev);
+static int cycx_netdevice_stop(struct net_device *dev);
+static int cycx_netdevice_hard_header(struct sk_buff *skb,
+				      struct net_device *dev, u16 type,
+				      const void *daddr, const void *saddr,
+				      unsigned len);
+static int cycx_netdevice_rebuild_header(struct sk_buff *skb);
+static int cycx_netdevice_hard_start_xmit(struct sk_buff *skb,
 					  struct net_device *dev);
 
 static struct net_device_stats *
@@ -468,7 +469,14 @@ static int cycx_wan_del_if(struct wan_device *wandev, struct net_device *dev)
 	return 0;
 }
 
+
 /* Network Device Interface */
+
+static const struct header_ops cycx_header_ops = {
+	.create = cycx_netdevice_hard_header,
+	.rebuild = cycx_netdevice_rebuild_header,
+};
+
 /* Initialize Linux network interface.
  *
  * This routine is called only once for each interface, during Linux network
@@ -483,8 +491,8 @@ static int cycx_netdevice_init(struct net_device *dev)