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

[net-next-2.6.git] / include / linux / netdevice.h

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index aae9ec367f5d295c4e0fb6d1cbeee42186ccac4f..91cd3f3db5079a06a214b53c98b04ea60dd70c08 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -250,6 +250,19 @@ struct hh_cache
 #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
        ((((dev)->hard_header_len+extra)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
 
+struct header_ops {
+       int     (*create) (struct sk_buff *skb, struct net_device *dev,
+                          unsigned short type, const void *daddr,
+                          const void *saddr, unsigned len);
+       int     (*parse)(const struct sk_buff *skb, unsigned char *haddr);
+       int     (*rebuild)(struct sk_buff *skb);
+#define HAVE_HEADER_CACHE
+       int     (*cache)(const struct neighbour *neigh, struct hh_cache *hh);
+       void    (*cache_update)(struct hh_cache *hh,
+                               const struct net_device *dev,
+                               const unsigned char *haddr);
+};
+
 /* These flag bits are private to the generic network queueing
  * layer, they may not be explicitly referenced by any other
  * code.
@@ -492,6 +505,9 @@ struct net_device
 #endif
        const struct ethtool_ops *ethtool_ops;
 
+       /* Hardware header description */
+       const struct header_ops *header_ops;
+
        /*
         * This marks the end of the "visible" part of the structure. All
         * fields hereafter are internal to the system, and may change at
@@ -615,13 +631,6 @@ struct net_device
        int                     (*open)(struct net_device *dev);
        int                     (*stop)(struct net_device *dev);
 #define HAVE_NETDEV_POLL
-       int                     (*hard_header) (struct sk_buff *skb,
-                                               struct net_device *dev,
-                                               unsigned short type,
-                                               void *daddr,
-                                               void *saddr,
-                                               unsigned len);
-       int                     (*rebuild_header)(struct sk_buff *skb);
 #define HAVE_CHANGE_RX_FLAGS
        void                    (*change_rx_flags)(struct net_device *dev,
                                                   int flags);
@@ -638,12 +647,6 @@ struct net_device
 #define HAVE_SET_CONFIG
        int                     (*set_config)(struct net_device *dev,
                                              struct ifmap *map);
-#define HAVE_HEADER_CACHE
-       int                     (*hard_header_cache)(struct neighbour *neigh,
-                                                    struct hh_cache *hh);
-       void                    (*header_cache_update)(struct hh_cache *hh,
-                                                      struct net_device *dev,
-                                                      unsigned char *  haddr);
 #define HAVE_CHANGE_MTU
        int                     (*change_mtu)(struct net_device *dev, int new_mtu);
 
@@ -657,8 +660,6 @@ struct net_device
        void                    (*vlan_rx_kill_vid)(struct net_device *dev,
                                                    unsigned short vid);
 
-       int                     (*hard_header_parse)(const struct sk_buff *skb,
-                                                    unsigned char *haddr);
        int                     (*neigh_setup)(struct net_device *dev, struct neigh_parms *);
 #ifdef CONFIG_NETPOLL
        struct netpoll_info     *npinfo;
@@ -802,11 +803,13 @@ extern int                netpoll_trap(void);
 
 static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
                                  unsigned short type,
-                                 void *daddr, void *saddr, unsigned len)
+                                 const void *daddr, const void *saddr,
+                                 unsigned len)
 {
-       if (!dev->hard_header)
+       if (!dev->header_ops)
                return 0;
-       return dev->hard_header(skb, dev, type, daddr, saddr, len);
+
+       return dev->header_ops->create(skb, dev, type, daddr, saddr, len);
 }
 
 static inline int dev_parse_header(const struct sk_buff *skb,
@@ -814,9 +817,9 @@ static inline int dev_parse_header(const struct sk_buff *skb,
 {
        const struct net_device *dev = skb->dev;
 
-       if (!dev->hard_header_parse)
+       if (!dev->header_ops->parse)
                return 0;
-       return dev->hard_header_parse(skb, haddr);
+       return dev->header_ops->parse(skb, haddr);
 }
 
 typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);