MLPPP not working in cluster mode.

[l2tpns.git] / l2tpns.c

diff --git a/l2tpns.c b/l2tpns.c
index d8bedee..7478560 100644 (file)
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -162,6 +162,8 @@ config_descriptt config_values[] = {
        CONFIG("hostname", hostname, STRING),
        CONFIG("nexthop_address", nexthop_address, IPv4),
        CONFIG("nexthop6_address", nexthop6_address, IPv6),
+       CONFIG("echo_timeout", echo_timeout, INT),
+       CONFIG("idle_echo_timeout", idle_echo_timeout, INT),
        { NULL, 0, 0, 0 },
 };
 
@@ -244,7 +246,7 @@ static clockt now(double *f)
 
        // Time in milliseconds
        time_now_ms = (t.tv_sec * 1000) + (t.tv_usec/1000);
-       
+
        return (t.tv_sec - basetime) * 10 + t.tv_usec / 100000 + 1;
 }
 
@@ -1328,7 +1330,8 @@ static void update_session_out_stat(sessionidt s, sessiont *sp, int len)
 
 // process outgoing (to tunnel) IP
 //
-static void processipout(uint8_t *buf, int len)
+// (i.e. this routine writes to data[-8]).
+void processipout(uint8_t *buf, int len)
 {
        sessionidt s;
        sessiont *sp;
@@ -1467,6 +1470,14 @@ static void processipout(uint8_t *buf, int len)
 
        if(session[s].bundle != 0 && bundle[session[s].bundle].num_of_links > 1)
        {
+
+               if (!config->cluster_iam_master)
+               {
+                       // The MPPP packets must be managed by the Master.
+                       master_forward_mppp_packet(s, data, size);
+                       return;
+               }
+
                // Add on L2TP header
                sessionidt members[MAXBUNDLESES];
                bundleidt bid = session[s].bundle;
@@ -1488,7 +1499,7 @@ static void processipout(uint8_t *buf, int len)
 
                if (nb_opened < 1)
                {
-                       LOG(2, s, t, "MPPP: PROCESSIPOUT ERROR, no session opened in bundle:%d\n", bid);
+                       LOG(3, s, t, "MPPP: PROCESSIPOUT ERROR, no session opened in bundle:%d\n", bid);
                        return;
                }
 
@@ -1498,7 +1509,7 @@ static void processipout(uint8_t *buf, int len)
                t = session[s].tunnel;
                sp = &session[s];
                LOG(4, s, t, "MPPP: (1)Session number becomes: %d\n", s);
-               
+
                if (num_of_links > 1)
                {
                        if(len > MINFRAGLEN)
@@ -1523,7 +1534,7 @@ static void processipout(uint8_t *buf, int len)
 
                                remain -= fraglen;
                                while (remain > last_fraglen)
-                               { 
+                               {
                                        b->current_ses = (b->current_ses + 1) % num_of_links;
                                        s = members[b->current_ses];
                                        t = session[s].tunnel;
@@ -2033,11 +2044,11 @@ void sessionshutdown(sessionidt s, char const *reason, int cdn_result, int cdn_e
                                {
                                        uint8_t ml;
                                        for(ml = 0; ml<bundle[b].num_of_links; ml++)
-                                                       if(bundle[b].members[ml] == s)
-                                                       {
-                                                                       mem_num = ml;
-                                                                       break;
-                                                       }
+                                       if(bundle[b].members[ml] == s)
+                                       {
+                                                       mem_num = ml;
+                                                       break;
+                                       }
                                        bundle[b].members[mem_num] = bundle[b].members[bundle[b].num_of_links];
                                        LOG(3, s, session[s].tunnel, "MPPP: Adjusted member links array\n");
 
@@ -2613,7 +2624,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                case 0:     // message type
                                        message = ntohs(*(uint16_t *) b);
                                        mandatory = flags & 0x80;
-                                       LOG(4, s, t, "   Message type = %u (%s)\n", *b, l2tp_code(message));
+                                       LOG(4, s, t, "   Message type = %u (%s)\n", message, l2tp_code(message));
                                        break;
                                case 1:     // result code
                                        {
@@ -3208,6 +3219,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 }
 
 // read and process packet on tun
+// (i.e. this routine writes to buf[-8]).
 static void processtun(uint8_t * buf, int len)
 {
        LOG_HEX(5, "Receive TUN Data", buf, len);
@@ -3481,8 +3493,8 @@ static void regular_cleanups(double period)
                        }
                }
 
-               // Drop sessions who have not responded within IDLE_TIMEOUT seconds
-               if (session[s].last_packet && (time_now - session[s].last_packet >= IDLE_TIMEOUT))
+               // Drop sessions who have not responded within IDLE_ECHO_TIMEOUT seconds
+               if (session[s].last_packet && (time_now - session[s].last_packet >= config->idle_echo_timeout))
                {
                        sessionshutdown(s, "No response to LCP ECHO requests.", CDN_ADMIN_DISC, TERM_LOST_SERVICE);
                        STAT(session_timeout);
@@ -3491,7 +3503,7 @@ static void regular_cleanups(double period)
                }
 
                // No data in ECHO_TIMEOUT seconds, send LCP ECHO
-               if (session[s].ppp.phase >= Establish && (time_now - session[s].last_packet >= ECHO_TIMEOUT) &&
+               if (session[s].ppp.phase >= Establish && (time_now - session[s].last_packet >= config->echo_timeout) &&
                        (time_now - sess_local[s].last_echo >= ECHO_TIMEOUT))
                {
                        uint8_t b[MAXETHER];
@@ -3772,6 +3784,8 @@ static void mainloop(void)
 {
        int i;
        uint8_t buf[65536];
+       uint8_t *p = buf + 8; // for the hearder of the forwarded MPPP packet (see C_MPPP_FORWARD)
+       int size_bufp = sizeof(buf) - 8;
        clockt next_cluster_ping = 0;   // send initial ping immediately
        struct epoll_event events[BASE_FDS + RADIUS_FDS + EXTRA_FDS];
        int maxevent = sizeof(events)/sizeof(*events);
@@ -4016,9 +4030,9 @@ static void mainloop(void)
                                // incoming IP
                                if (tun_ready)
                                {
-                                       if ((s = read(tunfd, buf, sizeof(buf))) > 0)
+                                       if ((s = read(tunfd, p, size_bufp)) > 0)
                                        {
-                                               processtun(buf, s);
+                                               processtun(p, s);
                                                tun_pkts++;
                                        }
                                        else
@@ -4267,6 +4281,9 @@ static void initdata(int optdebug, char *optconfig)
        config->ppp_max_failure = 5;
        config->kill_timedout_sessions = 1;
        strcpy(config->random_device, RANDOMDEVICE);
+       // Set default value echo_timeout and idle_echo_timeout
+       config->echo_timeout = ECHO_TIMEOUT;
+       config->idle_echo_timeout = IDLE_ECHO_TIMEOUT;
 
        log_stream = stderr;