mISDN Round Robin break when no channel is available

Prevent channels been parsed repetitively.
........

Merged revisions 344965 from http://svn.asterisk.org/svn/asterisk/branches/1.8

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/10@344966 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_misdn.c b/channels/chan_misdn.c
index 9945b2c8f30803e5efcafae41d1286b48dbeadb4..30b104452df95cbd31092ba539a501a2756dfde1 100644 (file)
--- a/channels/chan_misdn.c
+++ b/channels/chan_misdn.c
@@ -7891,6 +7891,7 @@ static struct ast_channel *misdn_request(const char *type, struct ast_format_cap
                        int port_up;
                        int check;
                        int maxbchans;
+                       int wraped = 0;
 
                        if (!rr->port) {
                                rr->port = misdn_cfg_get_next_port_spin(0);
@@ -7905,6 +7906,7 @@ static struct ast_channel *misdn_request(const char *type, struct ast_format_cap
                        do {
                                misdn_cfg_get(rr->port, MISDN_CFG_GROUPNAME, cfg_group, sizeof(cfg_group));
                                if (strcasecmp(cfg_group, group)) {
+                                       wraped = 1;
                                        rr->port = misdn_cfg_get_next_port_spin(rr->port);
                                        rr->channel = 1;
                                        continue;
@@ -7926,6 +7928,11 @@ static struct ast_channel *misdn_request(const char *type, struct ast_format_cap
                                        maxbchans = misdn_lib_get_maxchans(rr->port);
 
                                        for (;rr->channel <= maxbchans;rr->channel++) {
+                                               /* ive come full circle and can stop now */
+                                               if (wraped && (rr->port == port_start) && (rr->channel == bchan_start)) {
+                                                       break;
+                                               }
+
                                                chan_misdn_log(4, rr->port, "Checking channel %d\n",  rr->channel);
 
                                                if ((newbc = misdn_lib_get_free_bc(rr->port, rr->channel, 0, 0))) {
@@ -7934,15 +7941,16 @@ static struct ast_channel *misdn_request(const char *type, struct ast_format_cap
                                                        break;
                                                }
                                        }
-                                       if (!newbc || (rr->channel > maxbchans)) {
+                                       if (wraped && (rr->port == port_start) && (rr->channel <= bchan_start)) {
+                                               break;
+                                       } else if (!newbc || (rr->channel == maxbchans)) {
                                                rr->port = misdn_cfg_get_next_port_spin(rr->port);
                                                rr->channel = 1;
                                        }
 
                                }
-                       } while (!newbc && (rr->port > 0) &&
-                                ((rr->port != port_start) || ((rr->port == port_start) && (rr->channel < bchan_start))));
-
+                               wraped = 1;
+                       } while (!newbc && (rr->port > 0));
                } else {
                        for (port = misdn_cfg_get_next_port(0); port > 0;
                                port = misdn_cfg_get_next_port(port)) {