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srsLTE
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enb: add bind address for s1ap connection (#128) 

add s1c_bind_addr config option to specify the local bind address used for S1AP connections instead of using the GTP address.
This allows operation on setups with split S1U and S1C networks.
This commit is contained in:
Björn 2018-07-09 11:52:17 +02:00 committed by Andre Puschmann
parent 50742195b5
commit 23cc0ab011
4 changed files with 6 additions and 4 deletions
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4
srsenb/enb.conf.example
View File

@ -25,12 +25,12 @@ tac = 0x0007
mcc = 001
mnc = 01
mme_addr = 127.0.1.100
gtp_bind_addr = 127.0.0.1
gtp_bind_addr = 127.0.1.1
s1c_bind_addr = 127.0.1.1
n_prb = 50
#tm = 4
#nof_ports = 2
#####################################################################
# eNB configuration files
#

1
srsenb/hdr/upper/s1ap.h
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@ -49,6 +49,7 @@ typedef struct {
uint16_t mnc; // BCD-coded with 0xF filler
std::string mme_addr;
std::string gtp_bind_addr;
std::string s1c_bind_addr;
std::string enb_name;
}s1ap_args_t;

1
srsenb/src/main.cc
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@ -77,6 +77,7 @@ void parse_args(all_args_t *args, int argc, char* argv[]) {
("enb.mnc", bpo::value<string>(&mnc)->default_value("01"), "Mobile Network Code")
("enb.mme_addr", bpo::value<string>(&args->enb.s1ap.mme_addr)->default_value("127.0.0.1"),"IP address of MME for S1 connnection")
("enb.gtp_bind_addr", bpo::value<string>(&args->enb.s1ap.gtp_bind_addr)->default_value("192.168.3.1"), "Local IP address to bind for GTP connection")
("enb.s1c_bind_addr", bpo::value<string>(&args->enb.s1ap.s1c_bind_addr)->default_value("192.168.3.1"), "Local IP address to bind for S1AP connection")
("enb.phy_cell_id", bpo::value<uint32_t>(&args->enb.pci)->default_value(0), "Physical Cell Identity (PCI)")
("enb.n_prb", bpo::value<uint32_t>(&args->enb.n_prb)->default_value(25), "Number of PRB")
("enb.nof_ports", bpo::value<uint32_t>(&args->enb.nof_ports)->default_value(1), "Number of ports")

4
srsenb/src/upper/s1ap.cc
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@ -274,8 +274,8 @@ bool s1ap::connect_mme()
memset(&local_addr, 0, sizeof(struct sockaddr_in));
local_addr.sin_family = ADDR_FAMILY;
local_addr.sin_port = 0; // Any local port will do
if(inet_pton(AF_INET, args.gtp_bind_addr.c_str(), &(local_addr.sin_addr)) != 1) {
s1ap_log->error("Error converting IP address (%s) to sockaddr_in structure\n", args.gtp_bind_addr.c_str());
if(inet_pton(AF_INET, args.s1c_bind_addr.c_str(), &(local_addr.sin_addr)) != 1) {
s1ap_log->error("Error converting IP address (%s) to sockaddr_in structure\n", args.s1c_bind_addr.c_str());
return false;
}
bind(socket_fd, (struct sockaddr *)&local_addr, sizeof(local_addr));