adding usrp network interface

targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp

@@ -716,15 +716,20 @@ extern "C" {
             // workaround for an api problem, master clock has to be set with the constructor not via set_master_clock_rate
             args += boost::str(boost::format(",master_clock_rate=%f") % usrp_master_clock);
 
-//    args += ",num_send_frames=256,num_recv_frames=256, send_frame_size=4096, recv_frame_size=4096";
-
             //    args += ",num_send_frames=256,num_recv_frames=256, send_frame_size=4096, recv_frame_size=4096";
             uhd::device_addrs_t device_adds = uhd::device::find(args);
 
             if(device_adds.size() == 0) {
-                std::cerr<<"No USRP Device Found. " << std::endl;
-                free(s);
-                return -1;
+		args += ",addr=192.168.30.2";
+
+            	uhd::device_addrs_t device_adds = uhd::device::find(args);
+
+ 	        if(device_adds.size() == 0) {
+ 
+                	std::cerr<<"No USRP Device Found. " << std::endl;
+                	free(s);
+                	return -1;
+		}
             }
             LOG_I(PHY,"Found USRP X300\n");
             s->usrp = uhd::usrp::multi_usrp::make(args);