#define RCSID "$Id: demand.c,v 1.20 2005/08/25 12:14:18 paulus Exp $"
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/socket.h>
-#ifdef PPP_FILTER
+#ifdef PPP_WITH_FILTER
#include <pcap-bpf.h>
#endif
struct packet *pend_q;
struct packet *pend_qtail;
-static int active_packet __P((unsigned char *, int));
+static int active_packet(unsigned char *, int);
/*
* demand_conf - configure the interface for doing dial-on-demand.
*/
void
-demand_conf()
+demand_conf(void)
{
int i;
struct protent *protp;
|| ppp_recv_config(0, PPP_MRU, (u_int32_t) 0, 0, 0) < 0)
fatal("Couldn't set up demand-dialled PPP interface: %m");
-#ifdef PPP_FILTER
+#ifdef PPP_WITH_FILTER
set_filters(&pass_filter, &active_filter);
#endif
* demand_block - set each network protocol to block further packets.
*/
void
-demand_block()
+demand_block(void)
{
int i;
struct protent *protp;
* with an error.
*/
void
-demand_discard()
+demand_discard(void)
{
struct packet *pkt, *nextpkt;
int i;
* demand_unblock - set each enabled network protocol to pass packets.
*/
void
-demand_unblock()
+demand_unblock(void)
{
int i;
struct protent *protp;
0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
};
+#define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
/*
* loop_chars - process characters received from the loopback.
* Return value is 1 if we need to bring up the link, 0 otherwise.
*/
int
-loop_chars(p, n)
- unsigned char *p;
- int n;
+loop_chars(unsigned char *p, int n)
{
int c, rv;
* bring up the link.
*/
int
-loop_frame(frame, len)
- unsigned char *frame;
- int len;
+loop_frame(unsigned char *frame, int len)
{
struct packet *pkt;
* loopback, now that the real serial link is up.
*/
void
-demand_rexmit(proto)
- int proto;
+demand_rexmit(int proto)
{
struct packet *pkt, *prev, *nextpkt;
* that is, whether it is worth bringing up the link for.
*/
static int
-active_packet(p, len)
- unsigned char *p;
- int len;
+active_packet(unsigned char *p, int len)
{
int proto, i;
struct protent *protp;
if (len < PPP_HDRLEN)
return 0;
proto = PPP_PROTOCOL(p);
-#ifdef PPP_FILTER
+#ifdef PPP_WITH_FILTER
p[0] = 1; /* outbound packet indicator */
if ((pass_filter.bf_len != 0
&& bpf_filter(pass_filter.bf_insns, p, len, len) == 0)