Adding m1u config to enb.conf.example.

srsenb/enb.conf.example

@@ -150,6 +150,9 @@ nof_ctrl_symbols = 3
 # link_failure_nof_err: Number of PUSCH failures after which a radio-link failure is triggered. 
 #                       a link failure is when SNR<0 and CRC=KO
 # max_prach_offset_us:  Maximum allowed RACH offset (in us)
+# enable_mbsfn:         Enable MBMS transmission in the eNB
+# m1u_multiaddr:        Multicast addres the M1-U socket will register to
+# m1u_if_addr:          Address of the inteferface the M1-U interface will listen for multicast packets.
 #
 #####################################################################
 [expert]
@@ -162,3 +165,5 @@ nof_ctrl_symbols = 3
 #rrc_inactivity_timer = 60000
 #max_prach_offset_us  = 30
 #enable_mbsfn = false
+#m1u_multiaddr = 239.255.0.1
+#m1u_if_addr = 127.0.1.201 

srsenb/src/upper/gtpu.cc

@@ -403,7 +403,7 @@ void gtpu::mch_thread::run_thread()
     } while (n == -1 && errno == EAGAIN);
 
     pdu->N_bytes = (uint32_t) n;
-    
+
     gtpu_header_t header;
     gtpu_read_header(pdu, &header, gtpu_log);