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    Date
    SubjectRe: include/linux/netfilter.h after make headers_install is incomplete
    From
    From: "Greg Steuck" <greg@nest.cx>
    Date: Tue, 20 May 2008 11:44:56 -0700

    > I asked this on netfilter list, but it doesn't seem to be generating any
    > interest there. Maybe the question belongs on this list?

    No, it does not. netfilter-devel@vger.kernel.org is the correct place
    to discuss this, added to CC:.

    Perhaps you sent this to plain "netfilter@vger.kernel.org" or the
    older lists which are no longer in use.

    > I ran make headers_install in 2.6.25 tree and the installed netfilter.h is
    > not complete. Namely, it declares
    > union nf_inet_addr {
    > __u32 all[4];
    > __be32 ip;
    > __be32 ip6[4];
    > ...
    > }
    >
    > The __u32, __be32 types are declared in <linux/types.h> and the #include
    > directive is removed by the installation process. This in turn makes some
    > applications unbuildable against such an exported tree, e.g.
    >
    > busybox-1.10.1/networking/tcpudp.c:#include <linux/netfilter_ipv4.h>
    >
    > If I correctly understand the purpose of make headers_install, it is
    > supposed to generate an API for applications. I could certainly
    > make tcpudp.c include linux/types.h, but given that the application
    > does not even use nf_inet_addr, this would be the wrong place for
    > the fix.
    >
    > Is kernel the right place then?
    >
    > Thanks
    > Greg
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