tun.h revision 31195 
1struct tun_data {
2#ifdef __OpenBSD__
3  struct tunnel_header head;
4#endif
5  u_char data[MAX_MRU];
6};
7
8#ifdef __OpenBSD__
9#define tun_fill_header(f,proto) do { (f).head.tun_af = (proto); } while (0)
10#define tun_check_header(f,proto) ((f).head.tun_af == (proto))
11#else
12#define tun_fill_header(f,proto) do { } while (0)
13#define tun_check_header(f,proto) (1)
14#endif
15
16extern void tun_configure(int, int);
17