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[NET]: Wrap netdevice hardware header creation.

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Add inline for common usage of hardware header creation, and
fix bug in IPV6 mcast where the assumption about negative return is
an errno. Negative return from hard_header means not enough space
was available,(ie -N bytes).

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 01:36:32 -07:00 • committed by David S. Miller
parent 4c94f8c0c9
commit 0c4e85813d
19 changed files with 63 additions and 70 deletions
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9
include/linux/netdevice.h
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@ -800,6 +800,15 @@ extern int dev_restart(struct net_device *dev);
extern int netpoll_trap(void);
#endif
static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
unsigned short type,
void *daddr, void *saddr, unsigned len)
{
if (!dev->hard_header)
return 0;
return dev->hard_header(skb, dev, type, daddr, saddr, len);
}
typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf);
static inline int unregister_gifconf(unsigned int family)