Documentation update

[l2tpns.git] / cluster.c

diff --git a/cluster.c b/cluster.c
index 39a0db2..14b994a 100644 (file)
--- a/cluster.c
+++ b/cluster.c
@@ -1,6 +1,6 @@
 // L2TPNS Clustering Stuff
 
-char const *cvs_id_cluster = "$Id: cluster.c,v 1.8 2004/07/08 16:54:35 bodea Exp $";
+char const *cvs_id_cluster = "$Id: cluster.c,v 1.9 2004/07/11 07:57:35 bodea Exp $";
 
 #include <stdio.h>
 #include <sys/file.h>
@@ -911,12 +911,25 @@ int cluster_catchup_slave(int seq, u32 slave)
 // We've heard from another peer! Add it to the list
 // that we select from at election time.
 //
-int cluster_add_peer(u32 peer, time_t basetime, pingt *p)
+int cluster_add_peer(u32 peer, time_t basetime, pingt *pp, int size)
 {
        int i;
        u32 clusterid;
+       pingt p;
+       
 
-       clusterid = p->addr;
+               // Allow for backward compatability.
+               // Just the ping packet into a new structure to allow
+               // for the possibility that we might have received
+               // more or fewer elements than we were expecting.
+       if (size > sizeof(p))
+               size = sizeof(p);
+
+       memset( (void*) &p, 0, sizeof(p) );
+       memcpy( (void*) &p, (void*) pp, size);
+       
+
+       clusterid = p.addr;
        if (clusterid != config->bind_address)
        {
                // Is this for us?
@@ -932,7 +945,7 @@ int cluster_add_peer(u32 peer, time_t basetime, pingt *p)
                // This peer already exists. Just update the timestamp.
                peers[i].basetime = basetime;
                peers[i].timestamp = TIME;
-               peers[i].uptodate = !p->undef;
+               peers[i].uptodate = !p.undef;
                break;
        }
 
@@ -969,7 +982,7 @@ int cluster_add_peer(u32 peer, time_t basetime, pingt *p)
                peers[i].peer = peer;
                peers[i].basetime = basetime;
                peers[i].timestamp = TIME;
-               peers[i].uptodate = !p->undef;
+               peers[i].uptodate = !p.undef;
                if (i == num_peers)
                        ++num_peers;
 
@@ -1297,7 +1310,7 @@ int processcluster(char * data, int size, u32 addr)
 
        switch (type) {
        case C_PING:    // Update the peers table.
-               return cluster_add_peer(addr, more, (pingt*)p);
+               return cluster_add_peer(addr, more, (pingt*)p, s);
 
        case C_LASTSEEN:        // Catch up a slave (slave missed a packet).
                return cluster_catchup_slave(more, addr);