[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>
diff --git a/net/ax25/ax25_ip.c b/net/ax25/ax25_ip.c
index 930e491..f047a57 100644
--- a/net/ax25/ax25_ip.c
+++ b/net/ax25/ax25_ip.c
@@ -46,7 +46,9 @@
#ifdef CONFIG_INET
-int ax25_hard_header(struct sk_buff *skb, struct net_device *dev, unsigned short type, void *daddr, void *saddr, unsigned len)
+int ax25_hard_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type, const void *daddr,
+ const void *saddr, unsigned len)
{
unsigned char *buff;
@@ -215,7 +217,9 @@
#else /* INET */
-int ax25_hard_header(struct sk_buff *skb, struct net_device *dev, unsigned short type, void *daddr, void *saddr, unsigned len)
+int ax25_hard_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type, const void *daddr,
+ const void *saddr, unsigned len)
{
return -AX25_HEADER_LEN;
}
@@ -227,5 +231,12 @@
#endif
+const struct header_ops ax25_header_ops = {
+ .create = ax25_hard_header,
+ .rebuild = ax25_rebuild_header,
+};
+
EXPORT_SYMBOL(ax25_hard_header);
EXPORT_SYMBOL(ax25_rebuild_header);
+EXPORT_SYMBOL(ax25_header_ops);
+