- Show session open time in "show session"/"show user" detailed output.

[l2tpns.git] / l2tpns.c

diff --git a/l2tpns.c b/l2tpns.c
index 055f860..db73793 100644 (file)
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -4,7 +4,7 @@
 // Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
 // vim: sw=8 ts=8
 
-char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.73.2.10 2005/05/23 13:48:29 bodea Exp $";
+char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.73.2.11 2005/05/30 02:55:41 bodea Exp $";
 
 #include <arpa/inet.h>
 #include <assert.h>
@@ -83,7 +83,7 @@ uint32_t eth_tx = 0;
 static uint32_t ip_pool_size = 1;      // Size of the pool of addresses used for dynamic address allocation.
 time_t time_now = 0;                   // Current time in seconds since epoch.
 static char time_now_string[64] = {0}; // Current time as a string.
-static char main_quit = 0;             // True if we're in the process of exiting.
+char main_quit = 0;                    // True if we're in the process of exiting.
 linked_list *loaded_plugins;
 linked_list *plugins[MAX_PLUGIN_TYPES];
 
@@ -113,6 +113,7 @@ config_descriptt config_values[] = {
        CONFIG("setuid", target_uid, INT),
        CONFIG("dump_speed", dump_speed, BOOL),
        CONFIG("cleanup_interval", cleanup_interval, INT),
+       CONFIG("cleanup_limit", cleanup_limit, INT),
        CONFIG("multi_read_count", multi_read_count, INT),
        CONFIG("scheduler_fifo", scheduler_fifo, BOOL),
        CONFIG("lock_pages", lock_pages, BOOL),
@@ -181,6 +182,9 @@ static void processcontrol(uint8_t *buf, int len, struct sockaddr_in *addr, int
 static tunnelidt new_tunnel(void);
 static int unhide_avp(uint8_t *avp, tunnelidt t, sessionidt s, uint16_t length);
 
+// on slaves, alow BGP to withdraw cleanly before exiting
+#define QUIT_DELAY     5
+
 // return internal time (10ths since process startup)
 static clockt now(void)
 {
@@ -2059,12 +2063,7 @@ static void processtun(uint8_t * buf, int len)
        // Else discard.
 }
 
-//
-// Maximum number of actions to complete.
-// This is to avoid sending out too many packets
-// at once.
-#define MAX_ACTIONS 500
-
+// Handle retries, timeouts
 static int regular_cleanups(void)
 {
        static sessionidt s = 0;        // Next session to check for actions on.
@@ -2158,7 +2157,7 @@ static int regular_cleanups(void)
                if (session[s].die && session[s].die <= TIME)
                {
                        sessionkill(s, "Expired");
-                       if (++count >= MAX_ACTIONS) break;
+                       if (++count >= config->cleanup_limit) break;
                        continue;
                }
 
@@ -2167,7 +2166,7 @@ static int regular_cleanups(void)
                {
                        sessionshutdown(s, "No response to LCP ECHO requests");
                        STAT(session_timeout);
-                       if (++count >= MAX_ACTIONS) break;
+                       if (++count >= config->cleanup_limit) break;
                        continue;
                }
 
@@ -2187,7 +2186,7 @@ static int regular_cleanups(void)
                        LOG(4, s, session[s].tunnel, "No data in %d seconds, sending LCP ECHO\n",
                                        (int)(time_now - session[s].last_packet));
                        tunnelsend(b, 24, session[s].tunnel); // send it
-                       if (++count >= MAX_ACTIONS) break;
+                       if (++count >= config->cleanup_limit) break;
                }
 
                // Check for actions requested from the CLI
@@ -2256,7 +2255,7 @@ static int regular_cleanups(void)
                        if (send)
                                cluster_send_session(s);
 
-                       if (++count >= MAX_ACTIONS) break;
+                       if (++count >= config->cleanup_limit) break;
                }
        }
 
@@ -2278,7 +2277,7 @@ static int regular_cleanups(void)
                }
        }
 
-       if (count >= MAX_ACTIONS)
+       if (count >= config->cleanup_limit)
                return 1;       // Didn't finish!
 
        LOG(3, 0, 0, "End regular cleanup (%d actions), next in %d seconds\n", count, config->cleanup_interval);
@@ -2293,8 +2292,39 @@ static int regular_cleanups(void)
 static int still_busy(void)
 {
        int i;
+       static time_t stopped_bgp = 0;
        static clockt last_talked = 0;
        static clockt start_busy_wait = 0;
+
+       if (!config->cluster_iam_master)
+       {
+#ifdef BGP
+               if (bgp_configured)
+               {
+                       if (!stopped_bgp)
+                       {
+                               LOG(1, 0, 0, "Shutting down in %d seconds, stopping BGP...\n", QUIT_DELAY);
+
+                               for (i = 0; i < BGP_NUM_PEERS; i++)
+                                       if (bgp_peers[i].state == Established)
+                                               bgp_stop(&bgp_peers[i]);
+
+                               stopped_bgp = time_now;
+
+                               // we don't want to become master
+                               cluster_send_ping(0);
+
+                               return 1;
+                       }
+
+                       if (time_now < (stopped_bgp + QUIT_DELAY))
+                               return 1;
+               }
+#endif /* BGP */
+
+               return 0;
+       }
+
        if (start_busy_wait == 0)
                start_busy_wait = TIME;
 
@@ -2572,7 +2602,6 @@ static void mainloop(void)
 
                /* Handle timeouts. Make sure that this gets run anyway, even if there was
                 * something to read, else under load this will never actually run....
-                *
                 */
                if (config->cluster_iam_master && next_clean <= time_now)
                {
@@ -2598,6 +2627,7 @@ static void mainloop(void)
 
        //
        // Important!!! We MUST not process any packets past this point!
+       LOG(1, 0, 0, "Clean shutdown complete\n");
 }
 
 static void stripdomain(char *host)
@@ -3278,14 +3308,6 @@ int main(int argc, char *argv[])
 
        mainloop();
 
-#ifdef BGP
-       /* try to shut BGP down cleanly; with luck the sockets will be
-          writable since we're out of the select */
-       for (i = 0; i < BGP_NUM_PEERS; i++)
-               if (bgp_peers[i].state == Established)
-                       bgp_stop(&bgp_peers[i]);
-#endif /* BGP */
-
        /* remove plugins (so cleanup code gets run) */
        plugins_done();
 
@@ -3680,7 +3702,8 @@ static void update_config()
                }
        }
        memcpy(config->old_plugins, config->plugins, sizeof(config->plugins));
-       if (!config->cleanup_interval) config->cleanup_interval = 10;
+       if (!config->cleanup_interval) config->cleanup_interval = 2;
+       if (!config->cleanup_limit) config->cleanup_limit = 50;
        if (!config->multi_read_count) config->multi_read_count = 10;
        if (!config->cluster_address) config->cluster_address = inet_addr(DEFAULT_MCAST_ADDR);
        if (!*config->cluster_interface)