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#include <linux/types.h>

#include <linux/sched.h>

#include <linux/timer.h>

#include <linux/netfilter.h>

#include <linux/netfilter_ipv4/ip_conntrack_protocol.h>

unsigned long ip_ct_generic_timeout = 600*HZ;

static int generic_pkt_to_tuple(const void *datah, size_t datalen,

                                struct ip_conntrack_tuple *tuple)

{

        tuple->src.u.all = 0;

        tuple->dst.u.all = 0;

        return 1;

}

static int generic_invert_tuple(struct ip_conntrack_tuple *tuple,

                                const struct ip_conntrack_tuple *orig)

{

        tuple->src.u.all = 0;

        tuple->dst.u.all = 0;

        return 1;

}

/* Print out the per-protocol part of the tuple. */

static unsigned int generic_print_tuple(char *buffer,

                                        const struct ip_conntrack_tuple *tuple)

{

        return 0;

}

/* Print out the private part of the conntrack. */

static unsigned int generic_print_conntrack(char *buffer,

                                            const struct ip_conntrack *state)

{

        return 0;

}

/* Returns verdict for packet, or -1 for invalid. */

static int established(struct ip_conntrack *conntrack,

                       struct iphdr *iph, size_t len,

                       enum ip_conntrack_info conntrackinfo)

{

        ip_ct_refresh(conntrack, ip_ct_generic_timeout);

        return NF_ACCEPT;

}

/* Called when a new connection for this protocol found. */

static int

new(struct ip_conntrack *conntrack, struct iphdr *iph, size_t len)

{

        return 1;

}

struct ip_conntrack_protocol ip_conntrack_generic_protocol

= { { NULL, NULL }, 0, "unknown",

    generic_pkt_to_tuple, generic_invert_tuple, generic_print_tuple,

    generic_print_conntrack, established, new, NULL, NULL, NULL };