decrease host timeout, add more ping tries and make them configurable

diff --git a/main.c b/main.c
index e677f49..9361c97 100644 (file)
--- a/main.c
+++ b/main.c
@@ -36,6 +36,7 @@ LIST_HEAD(interfaces);
 int debug;
 
 static int host_timeout;
+static int host_ping_tries;
 static int inet_sock;
 static int forward_bcast;
 static int forward_dhcp;
@@ -244,7 +245,7 @@ static void host_entry_timeout(struct uloop_timeout *timeout)
         * When the timeout is reached, try pinging the host a few times before
         * giving up on it.
         */
-       if (host->rif->managed && host->cleanup_pending < 2) {
+       if (host->rif->managed && host->cleanup_pending < host_ping_tries) {
                send_arp_request(host->rif, host->ipaddr);
                host->cleanup_pending++;
                uloop_timeout_set(&host->timeout, 1000);
@@ -667,6 +668,7 @@ static int usage(const char *progname)
                        "       -R <gateway>:<net>/<mask>\n"
                        "                       Add a static route for <net>/<mask> via <gateway>\n"
                        "       -t <timeout>    Host entry expiry timeout\n"
+                       "       -p <tries>      Number of ARP ping attempts before considering a host dead\n"
                        "       -T <table>      Set routing table number for automatically added routes\n"
                        "       -B              Enable broadcast forwarding\n"
                        "       -D              Enable DHCP forwarding\n"
@@ -694,7 +696,8 @@ int main(int argc, char **argv)
                return 1;
        }
 
-       host_timeout = 60;
+       host_timeout = 30;
+       host_ping_tries = 5;
        forward_bcast = 0;
        local_route_table = 0;
        uloop_init();
@@ -717,6 +720,11 @@ int main(int argc, char **argv)
                        if (host_timeout <= 0)
                                return usage(argv[0]);
                        break;
+               case 'p':
+                       host_ping_tries = atoi(optarg);
+                       if (host_ping_tries <= 0)
+                               return usage(argv[0]);
+                       break;
                case 'd':
                        debug++;
                        break;