[NETLINK]: Introduce nlmsg_hdr() helper

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>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/ecryptfs/netlink.c b/fs/ecryptfs/netlink.c
index e3aa2253c850..8405d216a5fc 100644
--- a/fs/ecryptfs/netlink.c
+++ b/fs/ecryptfs/netlink.c
@@ -97,7 +97,7 @@ out:
  */
 static int ecryptfs_process_nl_response(struct sk_buff *skb)
 {
-        struct nlmsghdr *nlh = (struct nlmsghdr*)skb->data;
+        struct nlmsghdr *nlh = nlmsg_hdr(skb);
         struct ecryptfs_message *msg = NLMSG_DATA(nlh);
         int rc;
 
@@ -181,7 +181,7 @@ receive:
                                 "rc = [%d]\n", rc);
                 return;
         }
-        nlh = (struct nlmsghdr *)skb->data;
+        nlh = nlmsg_hdr(skb);
         if (!NLMSG_OK(nlh, skb->len)) {
                 ecryptfs_printk(KERN_ERR, "Received corrupt netlink "
                                 "message\n");