Fixed API and incomming calls from Osmocom-BB.

[lcr.git] / gsm.cpp

diff --git a/gsm.cpp b/gsm.cpp
index e4d5792..7507f33 100644 (file)
--- a/gsm.cpp
+++ b/gsm.cpp
@@ -266,20 +266,23 @@ void gsm_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned
        SCPY(msgtext, get_mncc_name(msg_type));
 
        /* add direction */
-       switch(port->p_type) {
-       case PORT_TYPE_GSM_BS_OUT:
-               SCAT(msgtext, " LCR->BSC");
-               break;
-       case PORT_TYPE_GSM_BS_IN:
-               SCAT(msgtext, " LCR<-BSC");
-               break;
-       case PORT_TYPE_GSM_MS_OUT:
-               SCAT(msgtext, " LCR->MS");
-               break;
-       case PORT_TYPE_GSM_MS_IN:
-               SCAT(msgtext, " LCR<-MS");
-               break;
-       }
+       if (port) {
+               switch(port->p_type) {
+               case PORT_TYPE_GSM_BS_OUT:
+                       SCAT(msgtext, " LCR->BSC");
+                       break;
+               case PORT_TYPE_GSM_BS_IN:
+                       SCAT(msgtext, " LCR<-BSC");
+                       break;
+               case PORT_TYPE_GSM_MS_OUT:
+                       SCAT(msgtext, " LCR->MS");
+                       break;
+               case PORT_TYPE_GSM_MS_IN:
+                       SCAT(msgtext, " LCR<-MS");
+                       break;
+               }
+       } else
+               SCAT(msgtext, " ----");
 
        /* init trace with given values */
        start_trace(mISDNport?mISDNport->portnum:-1,