netfilter.h头文件问题
请问我的RH7.3.内核是2.4的在/linux/netfile.h里面,没有网上说的那些
struct nf_hook_ops
{
struct list_head list;
/* User fills in from here down. */
nf_hookfn *hook;
int pf;
int hooknum;
/* Hooks are ordered in ascending priority. */
int priority;
};
等等,这是怎么回事呢,这不是系统自带的么.我该怎么办才能实现钩子过滤呢.