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srsRAN_4G
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moved GW out of the UE stack. This is important to keep concurrency out of the stack once it becomes single-threaded

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master
Francisco Paisana 6 years ago committed by Andre Puschmann
parent c7be984819
commit 10a56e2a84
9 changed files with 191 additions and 128 deletions
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25
lib/include/srslte/interfaces/ue_interfaces.h
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@ -223,13 +223,6 @@ public:
virtual std::string get_rb_name(uint32_t lcid) = 0;
};
// PDCP interface for GW
class pdcp_interface_gw
{
public:
virtual void write_sdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu, bool blocking) = 0;
virtual bool is_lcid_enabled(uint32_t lcid) = 0;
};
// PDCP interface for RRC
class pdcp_interface_rrc
@ -270,6 +263,13 @@ public:
virtual void write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t sdu) = 0;
};
class pdcp_interface_gw
{
public:
virtual void write_sdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu, bool blocking) = 0;
virtual bool is_lcid_enabled(uint32_t lcid) = 0;
};
// RLC interface for RRC
class rlc_interface_rrc
{
@ -921,6 +921,17 @@ public:
virtual void radio_failure() = 0;
};
// STACK interface for GW
class stack_interface_gw : public pdcp_interface_gw
{
public:
virtual bool switch_on() = 0;
};
class gw_interface_stack : public gw_interface_nas, public gw_interface_rrc, public gw_interface_pdcp
{
};
// Combined interface for PHY to access stack (MAC and RRC)
class stack_interface_phy_lte : public mac_interface_phy_lte, public rrc_interface_phy_lte
{

39
srsue/hdr/stack/ue_stack_lte.h
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@ -35,7 +35,6 @@
#include "srslte/radio/radio.h"
#include "srslte/upper/pdcp.h"
#include "srslte/upper/rlc.h"
#include "upper/gw.h"
#include "upper/nas.h"
#include "upper/usim.h"
@ -48,7 +47,7 @@
namespace srsue {
class ue_stack_lte : public ue_stack_base, public stack_interface_phy_lte
class ue_stack_lte final : public ue_stack_base, public stack_interface_phy_lte, public stack_interface_gw
{
public:
ue_stack_lte();
@ -57,8 +56,8 @@ public:
std::string get_type();
int init(const stack_args_t& args_, srslte::logger* logger_);
int init(const stack_args_t& args_, srslte::logger* logger_, phy_interface_stack_lte* phy_);
bool switch_on();
int init(const stack_args_t& args_, srslte::logger* logger_, phy_interface_stack_lte* phy_, gw_interface_stack* gw_);
bool switch_on() final;
bool switch_off();
void stop();
@ -102,21 +101,18 @@ public:
void run_tti(const uint32_t tti) { mac.run_tti(tti); }
// Interface for GW
void write_sdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu, bool blocking) final
{
pdcp.write_sdu(lcid, std::move(sdu), blocking);
}
bool is_lcid_enabled(uint32_t lcid) final { return pdcp.is_lcid_enabled(lcid); }
private:
bool running;
srsue::stack_args_t args;
// logging
srslte::logger* logger;
srslte::log_filter mac_log;
srslte::log_filter rlc_log;
srslte::log_filter pdcp_log;
srslte::log_filter rrc_log;
srslte::log_filter nas_log;
srslte::log_filter gw_log;
srslte::log_filter usim_log;
srslte::log_filter pool_log;
// stack components
srsue::mac mac;
srslte::mac_pcap mac_pcap;
@ -125,11 +121,22 @@ private:
srslte::pdcp pdcp;
srsue::rrc rrc;
srsue::nas nas;
srsue::gw gw;
std::unique_ptr<usim_base> usim;
srslte::logger* logger;
// Radio and PHY log are in ue.cc
srslte::log_filter mac_log;
srslte::log_filter rlc_log;
srslte::log_filter pdcp_log;
srslte::log_filter rrc_log;
srslte::log_filter nas_log;
srslte::log_filter usim_log;
srslte::log_filter pool_log;
// RAT-specific interfaces
phy_interface_stack_lte* phy;
gw_interface_stack* gw;
};
} // namespace srsue

25
srsue/hdr/stack/upper/gw.h
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@ -27,6 +27,7 @@
#include "srslte/common/common.h"
#include "srslte/common/interfaces_common.h"
#include "srslte/common/log.h"
#include "srslte/common/log_filter.h"
#include "srslte/common/threads.h"
#include "srslte/interfaces/ue_interfaces.h"
#include "tft_packet_filter.h"
@ -35,22 +36,20 @@
namespace srsue {
class gw_args_t
{
public:
struct gw_args_t {
struct log_args_t {
std::string gw_level;
int gw_hex_limit;
} log;
std::string tun_dev_name;
std::string tun_dev_netmask;
};
class gw
:public gw_interface_pdcp
,public gw_interface_nas
,public gw_interface_rrc
,public thread
class gw : public gw_interface_stack, public thread
{
public:
gw();
void init(pdcp_interface_gw* pdcp_, nas_interface_gw* nas_, srslte::log* gw_log_, gw_args_t);
int init(const gw_args_t& args_, srslte::logger* logger_, stack_interface_gw* stack);
void stop();
void get_metrics(gw_metrics_t &m);
@ -71,11 +70,9 @@ public:
private:
static const int GW_THREAD_PRIO = 7;
pdcp_interface_gw *pdcp;
nas_interface_gw *nas;
stack_interface_gw* stack;
srslte::byte_buffer_pool *pool;
srslte::log *gw_log;
srslte::logger* logger;
gw_args_t args;
@ -87,6 +84,8 @@ private:
bool if_up;
uint32_t default_lcid = 0;
srslte::log_filter log;
uint32_t current_ip_addr;
uint8_t current_if_id[8];

2
srsue/hdr/ue.h
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@ -79,6 +79,7 @@ typedef struct {
phy_args_t phy;
stack_args_t stack;
gw_args_t gw;
expert_args_t expert;
} all_args_t;
@ -110,6 +111,7 @@ private:
std::unique_ptr<ue_radio_base> radio;
std::unique_ptr<ue_phy_base> phy;
std::unique_ptr<ue_stack_base> stack;
std::unique_ptr<gw> gw_inst;
// Generic logger members
srslte::logger* logger = nullptr;

12
srsue/src/main.cc
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@ -120,8 +120,8 @@ void parse_args(all_args_t* args, int argc, char* argv[])
("log.pdcp_hex_limit", bpo::value<int>(&args->stack.log.pdcp_hex_limit), "PDCP log hex dump limit")
("log.rrc_level", bpo::value<string>(&args->stack.log.rrc_level), "RRC log level")
("log.rrc_hex_limit", bpo::value<int>(&args->stack.log.rrc_hex_limit), "RRC log hex dump limit")
("log.gw_level", bpo::value<string>(&args->stack.log.gw_level), "GW log level")
("log.gw_hex_limit", bpo::value<int>(&args->stack.log.gw_hex_limit), "GW log hex dump limit")
("log.gw_level", bpo::value<string>(&args->gw.log.gw_level), "GW log level")
("log.gw_hex_limit", bpo::value<int>(&args->gw.log.gw_hex_limit), "GW log hex dump limit")
("log.nas_level", bpo::value<string>(&args->stack.log.nas_level), "NAS log level")
("log.nas_hex_limit", bpo::value<int>(&args->stack.log.nas_hex_limit), "NAS log hex dump limit")
("log.usim_level", bpo::value<string>(&args->stack.log.usim_level), "USIM log level")
@ -143,8 +143,8 @@ void parse_args(all_args_t* args, int argc, char* argv[])
("usim.pin", bpo::value<string>(&args->stack.usim.pin), "PIN in case real SIM card is used")
("usim.reader", bpo::value<string>(&args->stack.usim.reader)->default_value(""), "Force specific PCSC reader. Default: Try all available readers.")
("gw.ip_devname", bpo::value<string>(&args->stack.gw.tun_dev_name)->default_value("tun_srsue"), "Name of the tun_srsue device")
("gw.ip_netmask", bpo::value<string>(&args->stack.gw.tun_dev_netmask)->default_value("255.255.255.0"), "Netmask of the tun_srsue device")
("gw.ip_devname", bpo::value<string>(&args->gw.tun_dev_name)->default_value("tun_srsue"), "Name of the tun_srsue device")
("gw.ip_netmask", bpo::value<string>(&args->gw.tun_dev_netmask)->default_value("255.255.255.0"), "Netmask of the tun_srsue device")
/* Downlink Channel emulator section */
("channel.dl.enable", bpo::value<bool>(&args->phy.dl_channel_args.enable)->default_value(false), "Enable/Disable internal Downlink channel emulator")
@ -423,7 +423,7 @@ void parse_args(all_args_t* args, int argc, char* argv[])
args->stack.log.nas_level = args->log.all_level;
}
if (!vm.count("log.gw_level")) {
args->stack.log.gw_level = args->log.all_level;
args->gw.log.gw_level = args->log.all_level;
}
if (!vm.count("log.usim_level")) {
args->stack.log.usim_level = args->log.all_level;
@ -451,7 +451,7 @@ void parse_args(all_args_t* args, int argc, char* argv[])
args->stack.log.nas_hex_limit = args->log.all_hex_limit;
}
if (!vm.count("log.gw_hex_limit")) {
args->stack.log.gw_hex_limit = args->log.all_hex_limit;
args->gw.log.gw_hex_limit = args->log.all_hex_limit;
}
if (!vm.count("log.usim_hex_limit")) {
args->stack.log.usim_hex_limit = args->log.all_hex_limit;

20
srsue/src/stack/ue_stack_lte.cc
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@ -38,9 +38,13 @@ std::string ue_stack_lte::get_type()
return "lte";
}
int ue_stack_lte::init(const stack_args_t& args_, srslte::logger* logger_, phy_interface_stack_lte* phy_)
int ue_stack_lte::init(const stack_args_t& args_,
srslte::logger* logger_,
phy_interface_stack_lte* phy_,
gw_interface_stack* gw_)
{
phy = phy_;
gw = gw_;
if (init(args_, logger_)) {
return SRSLTE_ERROR;
@ -60,7 +64,6 @@ int ue_stack_lte::init(const stack_args_t& args_, srslte::logger* logger_)
pdcp_log.init("PDCP", logger);
rrc_log.init("RRC ", logger);
nas_log.init("NAS ", logger);
gw_log.init("GW ", logger);
usim_log.init("USIM", logger);
pool_log.init("POOL", logger);
@ -72,7 +75,6 @@ int ue_stack_lte::init(const stack_args_t& args_, srslte::logger* logger_)
pdcp_log.set_level(args.log.pdcp_level);
rrc_log.set_level(args.log.rrc_level);
nas_log.set_level(args.log.nas_level);
gw_log.set_level(args.log.gw_level);
usim_log.set_level(args.log.usim_level);
mac_log.set_hex_limit(args.log.mac_hex_limit);
@ -80,7 +82,6 @@ int ue_stack_lte::init(const stack_args_t& args_, srslte::logger* logger_)
pdcp_log.set_hex_limit(args.log.pdcp_hex_limit);
rrc_log.set_hex_limit(args.log.rrc_hex_limit);
nas_log.set_hex_limit(args.log.nas_hex_limit);
gw_log.set_hex_limit(args.log.gw_hex_limit);
usim_log.set_hex_limit(args.log.usim_hex_limit);
// Set up pcap
@ -102,10 +103,9 @@ int ue_stack_lte::init(const stack_args_t& args_, srslte::logger* logger_)
mac.init(phy, &rlc, &rrc, &mac_log);
rlc.init(&pdcp, &rrc, &rlc_log, &mac, 0 /* RB_ID_SRB0 */);
pdcp.init(&rlc, &rrc, &gw, &pdcp_log, 0 /* RB_ID_SRB0 */, SECURITY_DIRECTION_UPLINK);
nas.init(usim.get(), &rrc, &gw, &nas_log, args.nas);
gw.init(&pdcp, &nas, &gw_log, args.gw);
rrc.init(phy, &mac, &rlc, &pdcp, &nas, usim.get(), &gw, &mac, &rrc_log, args.rrc);
pdcp.init(&rlc, &rrc, gw, &pdcp_log, 0 /* RB_ID_SRB0 */, SECURITY_DIRECTION_UPLINK);
nas.init(usim.get(), &rrc, gw, &nas_log, args.nas);
rrc.init(phy, &mac, &rlc, &pdcp, &nas, usim.get(), gw, &mac, &rrc_log, args.rrc);
running = true;
@ -124,7 +124,6 @@ void ue_stack_lte::stop()
// Stop RLC and PDCP before GW to avoid locking on queue
rlc.stop();
pdcp.stop();
gw.stop();
mac.stop();
if (args.pcap.enable) {
@ -173,7 +172,6 @@ bool ue_stack_lte::get_metrics(stack_metrics_t* metrics)
if (RRC_STATE_CONNECTED == rrc.get_state()) {
mac.get_metrics(metrics->mac);
rlc.get_metrics(metrics->rlc);
gw.get_metrics(metrics->gw);
nas.get_metrics(&metrics->nas);
return true;
}
@ -186,4 +184,4 @@ bool ue_stack_lte::is_rrc_connected()
return rrc.is_connected();
}
}
} // namespace srsue

150
srsue/src/stack/upper/gw.cc
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@ -39,15 +39,18 @@ gw::gw() : if_up(false), default_lcid(0), thread("GW")
current_ip_addr = 0;
}
void gw::init(pdcp_interface_gw* pdcp_, nas_interface_gw* nas_, srslte::log* gw_log_, gw_args_t args_)
int gw::init(const gw_args_t& args_, srslte::logger* logger_, stack_interface_gw* stack_)
{
pool = srslte::byte_buffer_pool::get_instance();
pdcp = pdcp_;
nas = nas_;
gw_log = gw_log_;
stack = stack_;
logger = logger_;
args = args_;
run_enable = true;
log.init("GW ", logger);
log.set_level(args.log.gw_level);
log.set_hex_limit(args.log.gw_hex_limit);
gettimeofday(&metrics_time[1], NULL);
dl_tput_bytes = 0;
ul_tput_bytes = 0;
@ -55,16 +58,20 @@ void gw::init(pdcp_interface_gw* pdcp_, nas_interface_gw* nas_, srslte::log* gw_
// MBSFN
mbsfn_sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
if (mbsfn_sock_fd < 0) {
gw_log->error("Failed to create MBSFN sink socket\n");
log.error("Failed to create MBSFN sink socket\n");
return SRSLTE_ERROR;
}
if (fcntl(mbsfn_sock_fd, F_SETFL, O_NONBLOCK)) {
gw_log->error("Failed to set non-blocking MBSFN sink socket\n");
log.error("Failed to set non-blocking MBSFN sink socket\n");
return SRSLTE_ERROR;
}
mbsfn_sock_addr.sin_family = AF_INET;
mbsfn_sock_addr.sin_addr.s_addr =inet_addr("127.0.0.1");
bzero(mbsfn_ports, SRSLTE_N_MCH_LCIDS*sizeof(uint32_t));
return SRSLTE_SUCCESS;
}
void gw::stop()
@ -104,8 +111,7 @@ void gw::get_metrics(gw_metrics_t &m)
m.dl_tput_mbps = (dl_tput_bytes*8/(double)1e6)/secs;
m.ul_tput_mbps = (ul_tput_bytes*8/(double)1e6)/secs;
gw_log->info("RX throughput: %4.6f Mbps. TX throughput: %4.6f Mbps.\n",
m.dl_tput_mbps, m.ul_tput_mbps);
log.info("RX throughput: %4.6f Mbps. TX throughput: %4.6f Mbps.\n", m.dl_tput_mbps, m.ul_tput_mbps);
memcpy(&metrics_time[1], &metrics_time[2], sizeof(struct timeval));
dl_tput_bytes = 0;
@ -117,10 +123,10 @@ void gw::get_metrics(gw_metrics_t &m)
*******************************************************************************/
void gw::write_pdu(uint32_t lcid, srslte::unique_byte_buffer_t pdu)
{
gw_log->info_hex(pdu->msg, pdu->N_bytes, "RX PDU. Stack latency: %ld us\n", pdu->get_latency_us());
log.info_hex(pdu->msg, pdu->N_bytes, "RX PDU. Stack latency: %ld us\n", pdu->get_latency_us());
dl_tput_bytes += pdu->N_bytes;
if (!if_up) {
gw_log->warning("TUN/TAP not up - dropping gw RX message\n");
log.warning("TUN/TAP not up - dropping gw RX message\n");
} else {
// Only handle IPv4 and IPv6 packets
struct iphdr* ip_pkt = (struct iphdr*)pdu->msg;
@ -128,10 +134,10 @@ void gw::write_pdu(uint32_t lcid, srslte::unique_byte_buffer_t pdu)
if (ip_pkt->version == 4 || ip_pkt->version == 6) {
int n = write(tun_fd, pdu->msg, pdu->N_bytes);
if (n > 0 && (pdu->N_bytes != (uint32_t)n)) {
gw_log->warning("DL TUN/TAP write failure. Wanted to write %d B but only wrote %d B.\n", pdu->N_bytes, n);
log.warning("DL TUN/TAP write failure. Wanted to write %d B but only wrote %d B.\n", pdu->N_bytes, n);
}
} else {
gw_log->error("Unsupported IP version. Dropping packet with %d B\n", pdu->N_bytes);
log.error("Unsupported IP version. Dropping packet with %d B\n", pdu->N_bytes);
}
}
}
@ -140,7 +146,8 @@ void gw::write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t pdu)
{
if(pdu->N_bytes>2)
{
gw_log->info_hex(pdu->msg, pdu->N_bytes, "RX MCH PDU (%d B). Stack latency: %ld us\n", pdu->N_bytes, pdu->get_latency_us());
log.info_hex(
pdu->msg, pdu->N_bytes, "RX MCH PDU (%d B). Stack latency: %ld us\n", pdu->N_bytes, pdu->get_latency_us());
dl_tput_bytes += pdu->N_bytes;
//Hack to drop initial 2 bytes
@ -150,11 +157,11 @@ void gw::write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t pdu)
memcpy(&dst_addr.s_addr, &pdu->msg[16],4);
if (!if_up) {
gw_log->warning("TUN/TAP not up - dropping gw RX message\n");
log.warning("TUN/TAP not up - dropping gw RX message\n");
} else {
int n = write(tun_fd, pdu->msg, pdu->N_bytes);
if(n > 0 && (pdu->N_bytes != (uint32_t) n) ) {
gw_log->warning("DL TUN/TAP write failure\n");
log.warning("DL TUN/TAP write failure\n");
}
}
}
@ -168,13 +175,13 @@ int gw::setup_if_addr(uint32_t lcid, uint8_t pdn_type, uint32_t ip_addr, uint8_t
int err;
if(pdn_type == LIBLTE_MME_PDN_TYPE_IPV4 || pdn_type == LIBLTE_MME_PDN_TYPE_IPV4V6 ){
err = setup_if_addr4(ip_addr, err_str);
if(err!= SRSLTE_SUCCESS){
if (err != SRSLTE_SUCCESS) {
return err;
}
}
if(pdn_type == LIBLTE_MME_PDN_TYPE_IPV6 || pdn_type == LIBLTE_MME_PDN_TYPE_IPV4V6 ){
err = setup_if_addr6(ipv6_if_addr, err_str);
if(err!= SRSLTE_SUCCESS){
if (err != SRSLTE_SUCCESS) {
return err;
}
}
@ -194,17 +201,17 @@ int gw::apply_traffic_flow_template(const uint8_t&
switch (tft->tft_op_code) {
case LIBLTE_MME_TFT_OPERATION_CODE_CREATE_NEW_TFT:
for (int i = 0; i < tft->packet_filter_list_size; i++) {
gw_log->info("New packet filter for TFT\n");
tft_packet_filter_t filter(erab_id, lcid, tft->packet_filter_list[i], gw_log);
log.info("New packet filter for TFT\n");
tft_packet_filter_t filter(erab_id, lcid, tft->packet_filter_list[i], &log);
auto it = tft_filter_map.insert(std::make_pair(filter.eval_precedence, filter));
if (it.second == false) {
gw_log->error("Error inserting TFT Packet Filter\n");
log.error("Error inserting TFT Packet Filter\n");
return SRSLTE_ERROR_CANT_START;
}
}
break;
default:
gw_log->error("Unhandled TFT OP code\n");
log.error("Unhandled TFT OP code\n");
return SRSLTE_ERROR_CANT_START;
}
return SRSLTE_SUCCESS;
@ -230,14 +237,14 @@ void gw::run_thread()
srslte::unique_byte_buffer_t pdu = srslte::allocate_unique_buffer(*pool, true);
if (!pdu) {
gw_log->error("Fatal Error: Couldn't allocate PDU in run_thread().\n");
log.error("Fatal Error: Couldn't allocate PDU in run_thread().\n");
return;
}
const static uint32_t ATTACH_WAIT_TOUT = 40; // 4 sec
uint32_t attach_wait = 0;
gw_log->info("GW IP packet receiver thread run_enable\n");
log.info("GW IP packet receiver thread run_enable\n");
running = true;
while(run_enable)
@ -245,11 +252,11 @@ void gw::run_thread()
if (SRSLTE_MAX_BUFFER_SIZE_BYTES-SRSLTE_BUFFER_HEADER_OFFSET > idx) {
N_bytes = read(tun_fd, &pdu->msg[idx], SRSLTE_MAX_BUFFER_SIZE_BYTES-SRSLTE_BUFFER_HEADER_OFFSET - idx);
} else {
gw_log->error("GW pdu buffer full - gw receive thread exiting.\n");
gw_log->console("GW pdu buffer full - gw receive thread exiting.\n");
log.error("GW pdu buffer full - gw receive thread exiting.\n");
log.console("GW pdu buffer full - gw receive thread exiting.\n");
break;
}
gw_log->debug("Read %d bytes from TUN fd=%d, idx=%d\n", N_bytes, tun_fd, idx);
log.debug("Read %d bytes from TUN fd=%d, idx=%d\n", N_bytes, tun_fd, idx);
if (N_bytes > 0) {
struct iphdr *ip_pkt = (struct iphdr*)pdu->msg;
struct ipv6hdr *ip6_pkt = (struct ipv6hdr*)pdu->msg;
@ -261,20 +268,20 @@ void gw::run_thread()
} else if (ip_pkt->version == 6){
pkt_len = ntohs(ip6_pkt->payload_len)+40;
} else {
gw_log->error_hex(pdu->msg, pdu->N_bytes, "Unsupported IP version. Dropping packet.\n");
log.error_hex(pdu->msg, pdu->N_bytes, "Unsupported IP version. Dropping packet.\n");
continue;
}
gw_log->debug("IPv%d packet total length: %d Bytes\n", ip_pkt->version, pkt_len);
log.debug("IPv%d packet total length: %d Bytes\n", ip_pkt->version, pkt_len);
// Check if entire packet was received
if (pkt_len == pdu->N_bytes) {
gw_log->info_hex(pdu->msg, pdu->N_bytes, "TX PDU");
log.info_hex(pdu->msg, pdu->N_bytes, "TX PDU");
while (run_enable && !pdcp->is_lcid_enabled(default_lcid) && attach_wait < ATTACH_WAIT_TOUT) {
while (run_enable && !stack->is_lcid_enabled(default_lcid) && attach_wait < ATTACH_WAIT_TOUT) {
if (!attach_wait) {
gw_log->info(
log.info(
"LCID=%d not active, requesting NAS attach (%d/%d)\n", default_lcid, attach_wait, ATTACH_WAIT_TOUT);
if (!nas->attach_request()) {
gw_log->warning("Could not re-establish the connection\n");
if (not stack->switch_on()) {
log.warning("Could not re-establish the connection\n");
}
}
usleep(100000);
@ -289,14 +296,14 @@ void gw::run_thread()
uint8_t lcid = check_tft_filter_match(pdu);
// Send PDU directly to PDCP
if (pdcp->is_lcid_enabled(lcid)) {
if (stack->is_lcid_enabled(lcid)) {
pdu->set_timestamp();
ul_tput_bytes += pdu->N_bytes;
pdcp->write_sdu(lcid, std::move(pdu), false);
stack->write_sdu(lcid, std::move(pdu), false);
do {
pdu = srslte::allocate_unique_buffer(*pool);
if (!pdu) {
gw_log->error("Fatal Error: Couldn't allocate PDU in run_thread().\n");
log.error("Fatal Error: Couldn't allocate PDU in run_thread().\n");
usleep(100000);
}
} while(!pdu);
@ -304,19 +311,20 @@ void gw::run_thread()
}
}else{
idx += N_bytes;
gw_log->debug("Entire packet not read from socket. Total Length %d, N_Bytes %d.\n", ip_pkt->tot_len, pdu->N_bytes);
log.debug(
"Entire packet not read from socket. Total Length %d, N_Bytes %d.\n", ip_pkt->tot_len, pdu->N_bytes);
}
} else {
gw_log->error("IP Version not handled. Version %d\n", ip_pkt->version);
log.error("IP Version not handled. Version %d\n", ip_pkt->version);
}
}else{
gw_log->error("Failed to read from TUN interface - gw receive thread exiting.\n");
gw_log->console("Failed to read from TUN interface - gw receive thread exiting.\n");
log.error("Failed to read from TUN interface - gw receive thread exiting.\n");
log.console("Failed to read from TUN interface - gw receive thread exiting.\n");
break;
}
}
running = false;
gw_log->info("GW IP receiver thread exiting.\n");
log.info("GW IP receiver thread exiting.\n");
}
uint8_t gw::check_tft_filter_match(const srslte::unique_byte_buffer_t& pdu)
@ -327,7 +335,7 @@ uint8_t gw::check_tft_filter_match(const srslte::unique_byte_buffer_t& pdu)
bool match = filter_pair.second.match(pdu);
if (match) {
lcid = filter_pair.second.lcid;
gw_log->debug("Found filter match -- EPS bearer Id %d, LCID %d\n", filter_pair.second.eps_bearer_id, lcid);
log.debug("Found filter match -- EPS bearer Id %d, LCID %d\n", filter_pair.second.eps_bearer_id, lcid);
break;
}
}
@ -337,7 +345,7 @@ uint8_t gw::check_tft_filter_match(const srslte::unique_byte_buffer_t& pdu)
/**************************/
/* TUN Interface Helpers */
/**************************/
int gw::init_if(char *err_str)
int gw::init_if(char* err_str)
{
if (if_up) {
return SRSLTE_ERROR_ALREADY_STARTED;
@ -345,10 +353,10 @@ int gw::init_if(char *err_str)
// Construct the TUN device
tun_fd = open("/dev/net/tun", O_RDWR);
gw_log->info("TUN file descriptor = %d\n", tun_fd);
log.info("TUN file descriptor = %d\n", tun_fd);
if (0 > tun_fd) {
err_str = strerror(errno);
gw_log->debug("Failed to open TUN device: %s\n", err_str);
log.debug("Failed to open TUN device: %s\n", err_str);
return SRSLTE_ERROR_CANT_START;
}
@ -359,7 +367,7 @@ int gw::init_if(char *err_str)
ifr.ifr_ifrn.ifrn_name[IFNAMSIZ-1] = 0;
if (0 > ioctl(tun_fd, TUNSETIFF, &ifr)) {
err_str = strerror(errno);
gw_log->debug("Failed to set TUN device name: %s\n", err_str);
log.debug("Failed to set TUN device name: %s\n", err_str);
close(tun_fd);
return SRSLTE_ERROR_CANT_START;
}
@ -368,14 +376,14 @@ int gw::init_if(char *err_str)
sock = socket(AF_INET, SOCK_DGRAM, 0);
if (0 > ioctl(sock, SIOCGIFFLAGS, &ifr)) {
err_str = strerror(errno);
gw_log->debug("Failed to bring up socket: %s\n", err_str);
log.debug("Failed to bring up socket: %s\n", err_str);
close(tun_fd);
return SRSLTE_ERROR_CANT_START;
}
ifr.ifr_flags |= IFF_UP | IFF_RUNNING;
if (0 > ioctl(sock, SIOCSIFFLAGS, &ifr)) {
err_str = strerror(errno);
gw_log->debug("Failed to set socket flags: %s\n", err_str);
log.debug("Failed to set socket flags: %s\n", err_str);
close(tun_fd);
return SRSLTE_ERROR_CANT_START;
}
@ -384,22 +392,22 @@ int gw::init_if(char *err_str)
struct in6_addr in6p;
char addr_str[INET6_ADDRSTRLEN];
if(find_ipv6_addr(&in6p)){
gw_log->debug("Found link-local IPv6 address: %s\n",inet_ntop(AF_INET6, &in6p, addr_str,INET6_ADDRSTRLEN) );
log.debug("Found link-local IPv6 address: %s\n", inet_ntop(AF_INET6, &in6p, addr_str, INET6_ADDRSTRLEN));
del_ipv6_addr(&in6p);
} else {
gw_log->warning("Could not find link-local IPv6 address.\n");
log.warning("Could not find link-local IPv6 address.\n");
}
if_up = true;
return SRSLTE_SUCCESS;
}
int gw::setup_if_addr4(uint32_t ip_addr, char *err_str)
int gw::setup_if_addr4(uint32_t ip_addr, char* err_str)
{
if (ip_addr != current_ip_addr) {
if (!if_up) {
if (init_if(err_str)) {
gw_log->error("init_if failed\n");
log.error("init_if failed\n");
return SRSLTE_ERROR_CANT_START;
}
}
@ -410,7 +418,7 @@ int gw::setup_if_addr4(uint32_t ip_addr, char *err_str)
((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr = htonl(ip_addr);
if (0 > ioctl(sock, SIOCSIFADDR, &ifr)) {
err_str = strerror(errno);
gw_log->debug("Failed to set socket address: %s\n", err_str);
log.debug("Failed to set socket address: %s\n", err_str);
close(tun_fd);
return SRSLTE_ERROR_CANT_START;
}
@ -418,7 +426,7 @@ int gw::setup_if_addr4(uint32_t ip_addr, char *err_str)
((struct sockaddr_in*)&ifr.ifr_netmask)->sin_addr.s_addr = inet_addr(args.tun_dev_netmask.c_str());
if (0 > ioctl(sock, SIOCSIFNETMASK, &ifr)) {
err_str = strerror(errno);
gw_log->debug("Failed to set socket netmask: %s\n", err_str);
log.debug("Failed to set socket netmask: %s\n", err_str);
close(tun_fd);
return SRSLTE_ERROR_CANT_START;
}
@ -427,7 +435,7 @@ int gw::setup_if_addr4(uint32_t ip_addr, char *err_str)
return SRSLTE_SUCCESS;
}
int gw::setup_if_addr6(uint8_t *ipv6_if_id, char *err_str)
int gw::setup_if_addr6(uint8_t* ipv6_if_id, char* err_str)
{
struct sockaddr_in6 sai;
struct in6_ifreq ifr6;
@ -443,7 +451,7 @@ int gw::setup_if_addr6(uint8_t *ipv6_if_id, char *err_str)
if (!match) {
if (!if_up) {
if( init_if(err_str) ) {
gw_log->error("init_if failed\n");
log.error("init_if failed\n");
return SRSLTE_ERROR_CANT_START;
}
}
@ -453,7 +461,7 @@ int gw::setup_if_addr6(uint8_t *ipv6_if_id, char *err_str)
ifr.ifr_addr.sa_family = AF_INET6;
if(inet_pton(AF_INET6, "fe80::", (void *)&sai.sin6_addr) <= 0) {
gw_log->error("Bad address\n");
log.error("Bad address\n");
return SRSLTE_ERROR_CANT_START;
}
@ -469,7 +477,7 @@ int gw::setup_if_addr6(uint8_t *ipv6_if_id, char *err_str)
if (ioctl(sock, SIOCSIFADDR, &ifr6) < 0) {
err_str = strerror(errno);
gw_log->error("Could not set IPv6 Link local address. Error %s\n", err_str);
log.error("Could not set IPv6 Link local address. Error %s\n", err_str);
return SRSLTE_ERROR_CANT_START;
}
@ -496,19 +504,19 @@ bool gw::find_ipv6_addr(struct in6_addr *in6_out)
char buf[1024];
} req;
gw_log->debug("Trying to obtain IPv6 addr of %s interface\n", args.tun_dev_name.c_str());
log.debug("Trying to obtain IPv6 addr of %s interface\n", args.tun_dev_name.c_str());
//Get Interface Index
if_index = if_nametoindex(args.tun_dev_name.c_str());
if(if_index == 0){
gw_log->error("Could not find interface index\n");
log.error("Could not find interface index\n");
goto err_out;
}
// Open NETLINK socket
fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
if (fd < 0) {
gw_log->error("Error openning NETLINK socket -- %s\n", strerror(errno));
log.error("Error openning NETLINK socket -- %s\n", strerror(errno));
goto err_out;
}
@ -529,18 +537,18 @@ bool gw::find_ipv6_addr(struct in6_addr *in6_out)
// Time to send and recv the message from kernel
n = send(fd, &req, req.n.nlmsg_len, 0);
if (n < 0) {
gw_log->error("Error sending NETLINK message to kernel -- %s", strerror(errno));
log.error("Error sending NETLINK message to kernel -- %s", strerror(errno));
goto err_out;
}
n = recv(fd, buf, sizeof(buf), 0);
if (n < 0) {
gw_log->error("Error receiving from NETLINK socket\n");
log.error("Error receiving from NETLINK socket\n");
goto err_out;
}
if (n == 0) {
gw_log->error("Nothing received from NETLINK Socket\n");
log.error("Nothing received from NETLINK Socket\n");
goto err_out;
}
@ -548,15 +556,15 @@ bool gw::find_ipv6_addr(struct in6_addr *in6_out)
for (nlmp = (struct nlmsghdr *)buf; NLMSG_OK (nlmp, n); nlmp = NLMSG_NEXT (nlmp, n)){
//Chack NL message type
if (nlmp->nlmsg_type == NLMSG_DONE){
gw_log->error("Reach end of NETLINK message without finding IPv6 address.\n");
if (nlmp->nlmsg_type == NLMSG_DONE) {
log.error("Reach end of NETLINK message without finding IPv6 address.\n");
goto err_out;
}
if (nlmp->nlmsg_type == NLMSG_ERROR) {
gw_log->error("NLMSG_ERROR in NETLINK reply\n");
log.error("NLMSG_ERROR in NETLINK reply\n");
goto err_out;
}
gw_log->debug("NETLINK message type %d\n", nlmp->nlmsg_type);
log.debug("NETLINK message type %d\n", nlmp->nlmsg_type);
//Get IFA message
rtmp = (struct ifaddrmsg *)NLMSG_DATA(nlmp);
@ -600,14 +608,14 @@ void gw::del_ipv6_addr(struct in6_addr *in6p)
//Get Interface Index
if_index = if_nametoindex(args.tun_dev_name.c_str());
if(if_index == 0){
gw_log->error("Could not find interface index\n");
log.error("Could not find interface index\n");
goto out;
}
// Open netlink socket
fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
if (fd < 0) {
gw_log->error("Error openning NETLINK socket -- %s\n", strerror(errno));
log.error("Error openning NETLINK socket -- %s\n", strerror(errno));
goto out;
}
@ -632,7 +640,7 @@ void gw::del_ipv6_addr(struct in6_addr *in6p)
status = send(fd, &req, req.n.nlmsg_len, 0);
if (status < 0) {
gw_log->error("Error sending NETLINK message\n");
log.error("Error sending NETLINK message\n");
goto out;
}

19
srsue/src/ue.cc
Unescape Escape View File

@ -79,6 +79,12 @@ int ue::init(const all_args_t& args_, srslte::logger* logger_)
return SRSLTE_ERROR;
}
std::unique_ptr<gw> gw_ptr(new gw());
if (!gw_ptr) {
log.console("Error creating a GW instance.\n");
return SRSLTE_ERROR;
}
std::unique_ptr<srsue::phy> lte_phy = std::unique_ptr<srsue::phy>(new srsue::phy());
if (!lte_phy) {
log.console("Error creating LTE PHY instance.\n");
@ -102,13 +108,19 @@ int ue::init(const all_args_t& args_, srslte::logger* logger_)
return SRSLTE_ERROR;
}
if (lte_stack->init(args.stack, logger, lte_phy.get())) {
if (lte_stack->init(args.stack, logger, lte_phy.get(), gw_ptr.get())) {
log.console("Error initializing stack.\n");
return SRSLTE_ERROR;
}
if (gw_ptr->init(args.gw, logger, lte_stack.get())) {
log.console("Error initializing GW.\n");
return SRSLTE_ERROR;
}
// move ownership
stack = std::move(lte_stack);
gw_inst = std::move(gw_ptr);
phy = std::move(lte_phy);
radio = std::move(lte_radio);
} else {
@ -206,6 +218,10 @@ void ue::stop()
stack->stop();
}
if (gw_inst) {
gw_inst->stop();
}
if (phy) {
phy->stop();
}
@ -239,6 +255,7 @@ bool ue::get_metrics(ue_metrics_t* m)
phy->get_metrics(&m->phy);
radio->get_metrics(&m->rf);
stack->get_metrics(&m->stack);
gw_inst->get_metrics(m->stack.gw);
return true;
}

25
srsue/test/upper/nas_test.cc
Unescape Escape View File

@ -137,6 +137,22 @@ private:
found_plmn_t plmns;
};
class stack_dummy : public stack_interface_gw
{
public:
stack_dummy(pdcp_interface_gw* pdcp_, srsue::nas* nas_) : pdcp(pdcp_), nas(nas_) {}
bool switch_on() final { return nas->attach_request(); }
void write_sdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu, bool blocking)
{
pdcp->write_sdu(lcid, std::move(sdu), blocking);
}
bool is_lcid_enabled(uint32_t lcid) { return pdcp->is_lcid_enabled(lcid); }
pdcp_interface_gw* pdcp = nullptr;
srsue::nas* nas = nullptr;
bool running = false;
};
class gw_dummy : public gw_interface_nas, public gw_interface_pdcp
{
int setup_if_addr(uint32_t lcid, uint8_t pdn_type, uint32_t ip_addr, uint8_t* ipv6_if_id, char* err_str)
@ -256,15 +272,20 @@ int mme_attach_request_test()
nas_cfg.apn_name = "test123";
srsue::nas nas;
srsue::gw gw;
stack_dummy stack(&pdcp_dummy, &nas);
nas.init(&usim, &rrc_dummy, &gw, &nas_log, nas_cfg);
gw_args_t gw_args;
gw_args.tun_dev_name = "tun0";
gw.init(&pdcp_dummy, &nas, &gw_log, gw_args);
gw_args.log.gw_level = "debug";
gw_args.log.gw_hex_limit = 100000;
srslte::logger_stdout def_logstdout;
srslte::logger* logger = &def_logstdout;
gw.init(gw_args, logger, &stack);
// trigger test
nas.attach_request();
stack.switch_on();
// this will time out in the first place

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