Changed Downlink TBF Establishment.
We don't use TBF establishment on CCCH and Immediate Assignment message any more, now we establish Downlink TBF during Uplink TBF and use Packet Downlink Assignment message.
Added function gprs_rlcmac_packet_downlink_assignment() and modified TBF management.
diff --git a/gprs_rlcmac.h b/gprs_rlcmac.h
index f38069c..e9a5e73 100644
--- a/gprs_rlcmac.h
+++ b/gprs_rlcmac.h
@@ -99,4 +99,7 @@
 
 void gprs_rlcmac_downlink_assignment(gprs_rlcmac_tbf *tbf);
 
+void gprs_rlcmac_packet_downlink_assignment(gprs_rlcmac_tbf *tbf);
+
+
 #endif // GPRS_RLCMAC_H