finish incorporating ipv6 patches

[l2tpns.git] / cluster.c

diff --git a/cluster.c b/cluster.c
index a452144..cc4c961 100644 (file)
--- a/cluster.c
+++ b/cluster.c
@@ -1,6 +1,6 @@
 // L2TPNS Clustering Stuff
 
-char const *cvs_id_cluster = "$Id: cluster.c,v 1.26 2004-12-16 23:40:31 bodea Exp $";
+char const *cvs_id_cluster = "$Id: cluster.c,v 1.29 2005-01-13 07:57:35 bodea Exp $";
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -38,11 +38,12 @@ char const *cvs_id_cluster = "$Id: cluster.c,v 1.26 2004-12-16 23:40:31 bodea Ex
  */
 
 // Module variables.
-int cluster_sockfd = 0;                // The filedescriptor for the cluster communications port.
+int cluster_sockfd = 0;                        // The filedescriptor for the cluster communications port.
 
 in_addr_t my_address = 0;              // The network address of my ethernet port.
 static int walk_session_number = 0;    // The next session to send when doing the slow table walk.
 static int walk_tunnel_number = 0;     // The next tunnel to send when doing the slow table walk.
+int forked = 0;                                // Sanity check: CLI must not diddle with heartbeat table
 
 #define MAX_HEART_SIZE (8192)  // Maximum size of heartbeat packet. Must be less than max IP packet size :)
 #define MAX_CHANGES  (MAX_HEART_SIZE/(sizeof(sessiont) + sizeof(int) ) - 2)    // Assumes a session is the biggest type!
@@ -405,18 +406,18 @@ void master_update_counts(void)
                if ( walk_session_number > config->cluster_highest_sessionid)
                        walk_session_number = 1;
 
-               if (!sess_count[walk_session_number].cin && !sess_count[walk_session_number].cout)
+               if (!sess_local[walk_session_number].cin && !sess_local[walk_session_number].cout)
                        continue; // Unused. Skip it.
 
                b[c].sid = walk_session_number;
-               b[c].in = sess_count[walk_session_number].cin;
-               b[c].out = sess_count[walk_session_number].cout;
+               b[c].in = sess_local[walk_session_number].cin;
+               b[c].out = sess_local[walk_session_number].cout;
 
                if (++c > MAX_B_RECS)   // Send a max of 400 elements in a packet.
                        break;
 
                        // Reset counters.
-               sess_count[walk_session_number].cin = sess_count[walk_session_number].cout = 0;
+               sess_local[walk_session_number].cin = sess_local[walk_session_number].cout = 0;
        }
 
        if (!c)         // Didn't find any that changes. Get out of here!
@@ -580,12 +581,12 @@ void cluster_check_master(void)
                session[i].last_packet = time_now;
 
                        // Accumulate un-sent byte counters.
-               session[i].cin += sess_count[i].cin;
-               session[i].cout += sess_count[i].cout;
-               session[i].total_cin += sess_count[i].cin;
-               session[i].total_cout += sess_count[i].cout;
+               session[i].cin += sess_local[i].cin;
+               session[i].cout += sess_local[i].cout;
+               session[i].total_cin += sess_local[i].cin;
+               session[i].total_cout += sess_local[i].cout;
 
-               sess_count[i].cin = sess_count[i].cout = 0;
+               sess_local[i].cin = sess_local[i].cout = 0;
 
                session[i].radius = 0;  // Reset authentication as the radius blocks aren't up to date.
 
@@ -866,6 +867,11 @@ int cluster_send_session(int sid)
                return -1;
        }
 
+       if (forked) {
+               LOG(0, sid, 0, "cluster_send_session called from child process!\n");
+               return -1;
+       }
+
        return type_changed(C_CSESSION, sid);
 }
 
@@ -1177,9 +1183,22 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
        config->cluster_last_hb = TIME; // Reset to ensure that we don't become master!!
 
        if (config->cluster_seq_number != h->seq) {     // Out of sequence heartbeat!
-               LOG(1, 0, 0, "HB: Got seq# %d but was expecting %d. asking for resend.\n", h->seq, config->cluster_seq_number);
+               static int lastseen_seq = 0;
+               static time_t lastseen_time = 0;
+
+               // limit to once per second for a particular seq#
+               int ask = (config->cluster_seq_number != lastseen_seq || time_now != lastseen_time);
 
-               peer_send_message(addr, C_LASTSEEN, config->cluster_seq_number, NULL, 0);
+               LOG(1, 0, 0, "HB: Got seq# %d but was expecting %d.  %s.\n",
+                       h->seq, config->cluster_seq_number,
+                       ask ? "Asking for resend" : "Ignoring");
+
+               if (ask)
+               {
+                       lastseen_seq = config->cluster_seq_number;
+                       lastseen_time = time_now;
+                       peer_send_message(addr, C_LASTSEEN, config->cluster_seq_number, NULL, 0);
+               }
 
                config->cluster_last_hb = TIME; // Reset to ensure that we don't become master!!