[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>
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David S. Miller
parent
965ffea43d
commit
b529ccf279
@@ -487,7 +487,7 @@ ipq_rcv_skb(struct sk_buff *skb)
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if (skblen < sizeof(*nlh))
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return;
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nlh = (struct nlmsghdr *)skb->data;
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nlh = nlmsg_hdr(skb);
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nlmsglen = nlh->nlmsg_len;
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if (nlmsglen < sizeof(*nlh) || skblen < nlmsglen)
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return;
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