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authorStephen Hemminger <shemminger@linux-foundation.org>2007-10-09 01:40:57 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:52:52 -0700
commit3b04ddde02cf1b6f14f2697da5c20eca5715017f (patch)
tree9da1341a5a399a507b5ea6bf5a3047506b8d8f8f /include
parentb95cce3576813ac3f86bafa6b5daaaaf7574b0fe (diff)
[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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/etherdevice.h20
-rw-r--r--include/linux/if_ether.h2
-rw-r--r--include/linux/if_shaper.h11
-rw-r--r--include/linux/isdn.h7
-rw-r--r--include/linux/netdevice.h43
-rw-r--r--include/net/ax25.h5
-rw-r--r--include/net/pkt_sched.h5
7 files changed, 43 insertions, 50 deletions
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index 6cdb97365e4..b7558ec81ed 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -29,15 +29,19 @@
#include <linux/random.h>
#ifdef __KERNEL__
-extern int eth_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr,
- void *saddr, unsigned len);
-extern int eth_rebuild_header(struct sk_buff *skb);
extern __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev);
-extern void eth_header_cache_update(struct hh_cache *hh, struct net_device *dev,
- unsigned char * haddr);
-extern int eth_header_cache(struct neighbour *neigh,
- struct hh_cache *hh);
+extern const struct header_ops eth_header_ops;
+
+extern int eth_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type,
+ const void *daddr, const void *saddr, unsigned len);
+extern int eth_rebuild_header(struct sk_buff *skb);
+extern int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr);
+extern int eth_header_cache(const struct neighbour *neigh, struct hh_cache *hh);
+extern void eth_header_cache_update(struct hh_cache *hh,
+ const struct net_device *dev,
+ const unsigned char *haddr);
+
extern struct net_device *alloc_etherdev_mq(int sizeof_priv, unsigned int queue_count);
#define alloc_etherdev(sizeof_priv) alloc_etherdev_mq(sizeof_priv, 1)
diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h
index 0e791e2c0c5..5f929779366 100644
--- a/include/linux/if_ether.h
+++ b/include/linux/if_ether.h
@@ -117,6 +117,8 @@ static inline struct ethhdr *eth_hdr(const struct sk_buff *skb)
return (struct ethhdr *)skb_mac_header(skb);
}
+int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr);
+
#ifdef CONFIG_SYSCTL
extern struct ctl_table ether_table[];
#endif
diff --git a/include/linux/if_shaper.h b/include/linux/if_shaper.h
index 51574743aa1..3b1b7ba1982 100644
--- a/include/linux/if_shaper.h
+++ b/include/linux/if_shaper.h
@@ -25,17 +25,6 @@ struct shaper
an empty queue */
spinlock_t lock;
struct net_device *dev;
- int (*hard_start_xmit) (struct sk_buff *skb,
- struct net_device *dev);
- 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);
- 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);
struct net_device_stats* (*get_stats)(struct net_device *dev);
struct timer_list timer;
};
diff --git a/include/linux/isdn.h b/include/linux/isdn.h
index 3c7875b7ab5..a6fb366748b 100644
--- a/include/linux/isdn.h
+++ b/include/linux/isdn.h
@@ -353,13 +353,6 @@ typedef struct isdn_net_local_s {
/* a particular channel (including */
/* the frame_cnt */
- int (*org_hhc)(
- struct neighbour *neigh,
- struct hh_cache *hh);
- /* Ptr to orig. header_cache_update */
- void (*org_hcu)(struct hh_cache *,
- struct net_device *,
- unsigned char *);
int pppbind; /* ippp device for bindings */
int dialtimeout; /* How long shall we try on dialing? (jiffies) */
int dialwait; /* How long shall we wait after failed attempt? (jiffies) */
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index aae9ec367f5..91cd3f3db50 100644
--- 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);
diff --git a/include/net/ax25.h b/include/net/ax25.h
index 99a4e364c74..4e3cd93f81f 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -363,8 +363,11 @@ extern int ax25_rx_iframe(ax25_cb *, struct sk_buff *);
extern int ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *);
/* ax25_ip.c */
-extern int ax25_hard_header(struct sk_buff *, struct net_device *, unsigned short, void *, void *, unsigned int);
+extern int ax25_hard_header(struct sk_buff *, struct net_device *,
+ unsigned short, const void *,
+ const void *, unsigned int);
extern int ax25_rebuild_header(struct sk_buff *);
+extern const struct header_ops ax25_header_ops;
/* ax25_out.c */
extern ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *, ax25_digi *, struct net_device *);
diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index 9e22526e80e..ab61809a961 100644
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -97,10 +97,9 @@ extern int tc_classify(struct sk_buff *skb, struct tcf_proto *tp,
/* Calculate maximal size of packet seen by hard_start_xmit
routine of this device.
*/
-static inline unsigned psched_mtu(struct net_device *dev)
+static inline unsigned psched_mtu(const struct net_device *dev)
{
- unsigned mtu = dev->mtu;
- return dev->hard_header ? mtu + dev->hard_header_len : mtu;
+ return dev->mtu + dev->hard_header_len;
}
#endif