freebsd-nq/usr.sbin/ppp/tun.h

/*
 * $Id$
 */

struct tun_data {
#ifdef __OpenBSD__
  struct tunnel_header head;
#endif
  u_char data[MAX_MRU];
};

#ifdef __OpenBSD__
#define tun_fill_header(f,proto) do { (f).head.tun_af = (proto); } while (0)
#define tun_check_header(f,proto) ((f).head.tun_af == (proto))
#else
#define tun_fill_header(f,proto) do { } while (0)
#define tun_check_header(f,proto) (1)
#endif

extern void tun_configure(int, int);
Add id strings to tun.[ch]. Don't try to open ppp.secret if we're never going to use it. 1997-11-17 00:42:41 +00:00			`/*`
			`* $Id$`
			`*/`

Abstract data read from and written to the tun device, allowing for a possible header on the front of all packets. In OpenBSD, there's a structure containing the address family here. If we're building under OpenBSD, set up the ``flags'' part of struct tuninfo (not there under FreeBSD) so that we config the interface as POINTOPOINT. Prefix prototypes with ``extern'' in os.c for consistency. These changes are cosmetic under FreeBSD, but allow ppp to build & work under OpenBSD (bar the srandomdev() stuff, the inclusing of <net/if_var.h> and some Makefile symantecs). 1997-11-16 22:15:11 +00:00			`struct tun_data {`
			`#ifdef __OpenBSD__`
			`struct tunnel_header head;`
			`#endif`
			`u_char data[MAX_MRU];`
			`};`

			`#ifdef __OpenBSD__`
			`#define tun_fill_header(f,proto) do { (f).head.tun_af = (proto); } while (0)`
			`#define tun_check_header(f,proto) ((f).head.tun_af == (proto))`
			`#else`
			`#define tun_fill_header(f,proto) do { } while (0)`
			`#define tun_check_header(f,proto) (1)`
			`#endif`

			`extern void tun_configure(int, int);`