nFAPI: increase maximum segment size to 65000

nFAPI has a mechanism to segment messages that are too big for transport
over a given medium (see e.g. SCF 225, section 2.3.2).

The maximum segment size of 10000 makes that for larger payloads, e.g.
TX_data.request, many small segments are to be sent. This can create or
increase delays on the transport. On the other hand, the currently only
available transport mechanism, UDP, allows to transport packets of up to
almost 65535 bytes. Correspondingly, increase the maximum segment size
so that less segments are to be created, and potentially, less delay is
to be incurred.  # Please enter the commit message for your changes.
Lines starting

nfapi/open-nFAPI/pnf/src/pnf_p7_interface.c

@@ -29,7 +29,7 @@ nfapi_pnf_p7_config_t* nfapi_pnf_p7_config_create()
 
 
 	// set the default parameters
-	_this->_public.segment_size = 1400;
+	_this->_public.segment_size = 65000; // UDP max packet size is 65535
 	_this->max_num_segments = 8;
 	
 	_this->_public.subframe_buffer_size = 8;// TODO: Initialize the slot_buffer size

nfapi/open-nFAPI/vnf/src/vnf_p7_interface.c

@@ -42,7 +42,7 @@ nfapi_vnf_p7_config_t* nfapi_vnf_p7_config_create()
 		return 0;
 
 	// todo : initialize
-	_this->_public.segment_size = 1400;
+	_this->_public.segment_size = 65000; // UDP max packet size is 65535
 	_this->_public.max_num_segments = 8;
 	_this->_public.checksum_enabled = 1;