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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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14
net/8021q/vlan.c
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@ -314,6 +314,12 @@ int unregister_vlan_device(struct net_device *dev)
*/
static struct lock_class_key vlan_netdev_xmit_lock_key;
static const struct header_ops vlan_header_ops = {
.create = vlan_dev_hard_header,
.rebuild = vlan_dev_rebuild_header,
.parse = eth_header_parse,
};
static int vlan_dev_init(struct net_device *dev)
{
struct net_device *real_dev = VLAN_DEV_INFO(dev)->real_dev;
@ -331,18 +337,14 @@ static int vlan_dev_init(struct net_device *dev)
memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
if (real_dev->features & NETIF_F_HW_VLAN_TX) {
dev->hard_header = real_dev->hard_header;
dev->header_ops = real_dev->header_ops;
dev->hard_header_len = real_dev->hard_header_len;
dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit;
dev->rebuild_header = real_dev->rebuild_header;
} else {
dev->hard_header = vlan_dev_hard_header;
dev->header_ops = &vlan_header_ops;
dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
dev->hard_start_xmit = vlan_dev_hard_start_xmit;
dev->rebuild_header = vlan_dev_rebuild_header;
}
dev->hard_header_parse = real_dev->hard_header_parse;
dev->hard_header_cache = NULL;
lockdep_set_class(&dev->_xmit_lock, &vlan_netdev_xmit_lock_key);
return 0;