#define INT_MAX     ((int)(~0U>>1))

#define INT_MIN     (-INT_MAX - 1)

#define UINT_MAX    (~0U)

#define LONG_MAX    ((long)(~0UL>>1))

#define LONG_MIN    (-LONG_MAX - 1)

#define ULONG_MAX   (~0UL)

struct nf_hook_ops

{

    struct list_head list;



    /* User fills in from here down. */

    nf_hookfn *hook;

    struct module *owner;

    int pf;

    int hooknum;

    /* Hooks are ordered in ascending priority. */

    int priority;

};