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[NETLINK]: Introduce nlmsg_hdr() helper

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For the common "(struct nlmsghdr *)skb->data" sequence, so that we reduce the
number of direct accesses to skb->data and for consistency with all the other
cast skb member helpers.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo 2007-04-25 19:08:35 -07:00 • committed by David S. Miller
parent 965ffea43d
commit b529ccf279
15 changed files with 23 additions and 18 deletions
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5
include/linux/netlink.h
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@ -138,6 +138,11 @@ struct nlattr
#include <linux/capability.h>
#include <linux/skbuff.h>
static inline struct nlmsghdr *nlmsg_hdr(const struct sk_buff *skb)
{
return (struct nlmsghdr *)skb->data;
}
struct netlink_skb_parms
{
struct ucred creds; /* Skb credentials */