2 * minconn.c - pppd plugin to implement a `minconnect' option.
4 * Copyright (c) 1999-2024 Paul Mackerras. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
18 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
19 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
20 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
21 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
22 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
23 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
24 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
32 #include <sys/types.h>
34 #include <pppd/pppd.h>
35 #include <pppd/options.h>
38 #include <linux/ppp_defs.h>
40 #include <net/ppp_defs.h>
43 char pppd_version[] = PPPD_VERSION;
45 static int minconnect = 0;
47 static struct option my_options[] = {
48 { "minconnect", o_int, &minconnect,
49 "Set minimum connect time before idle timeout applies" },
53 static int my_get_idle(struct ppp_idle *idle)
58 return minconnect ? minconnect: ppp_get_max_idle_time();
60 if (idle->recv_idle < t)
62 return ppp_get_max_idle_time() - t;
65 void plugin_init(void)
68 ppp_add_options(my_options);
69 idle_time_hook = my_get_idle;