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

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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>
This commit is contained in:
Stephen Hemminger
2007-10-09 01:40:57 -07:00
committed by David S. Miller
parent b95cce3576
commit 3b04ddde02
65 changed files with 479 additions and 473 deletions
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16
net/core/dev.c
View File

@ -967,14 +967,6 @@ void dev_load(struct net *net, const char *name)
request_module("%s", name);
}
static int default_rebuild_header(struct sk_buff *skb)
{
printk(KERN_DEBUG "%s: default_rebuild_header called -- BUG!\n",
skb->dev ? skb->dev->name : "NULL!!!");
kfree_skb(skb);
return 1;
}
/**
* dev_open - prepare an interface for use.
* @dev: device to open
@ -3561,14 +3553,6 @@ int register_netdevice(struct net_device *dev)
}
}
/*
* nil rebuild_header routine,
* that should be never called and used as just bug trap.
*/
if (!dev->rebuild_header)
dev->rebuild_header = default_rebuild_header;
ret = netdev_register_kobject(dev);
if (ret)
goto err_uninit;

11
net/core/neighbour.c
View File

@ -897,8 +897,8 @@ out_unlock_bh:
static void neigh_update_hhs(struct neighbour *neigh)
{
struct hh_cache *hh;
void (*update)(struct hh_cache*, struct net_device*, unsigned char *) =
neigh->dev->header_cache_update;
void (*update)(struct hh_cache*, const struct net_device*, const unsigned char *)
= neigh->dev->header_ops->cache_update;
if (update) {
for (hh = neigh->hh; hh; hh = hh->hh_next) {
@ -1095,7 +1095,8 @@ static void neigh_hh_init(struct neighbour *n, struct dst_entry *dst,
hh->hh_type = protocol;
atomic_set(&hh->hh_refcnt, 0);
hh->hh_next = NULL;
if (dev->hard_header_cache(n, hh)) {
if (dev->header_ops->cache(n, hh)) {
kfree(hh);
hh = NULL;
} else {
@ -1127,7 +1128,7 @@ int neigh_compat_output(struct sk_buff *skb)
if (dev_hard_header(skb, dev, ntohs(skb->protocol), NULL, NULL,
skb->len) < 0 &&
dev->rebuild_header(skb))
dev->header_ops->rebuild(skb))
return 0;
return dev_queue_xmit(skb);
@ -1149,7 +1150,7 @@ int neigh_resolve_output(struct sk_buff *skb)
if (!neigh_event_send(neigh, skb)) {
int err;
struct net_device *dev = neigh->dev;
if (dev->hard_header_cache && !dst->hh) {
if (dev->header_ops->cache && !dst->hh) {
write_lock_bh(&neigh->lock);
if (!dst->hh)
neigh_hh_init(neigh, dst, dst->ops->protocol);