[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>

1 files changed, 10 insertions, 3 deletions

diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
index 0a847326a5e4..ecd156def039 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 */