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rrc-nr,test: add security_cmd helper test

Browse Source 
Signed-off-by: Carlo Galiotto <carlo@srs.io>
master
Carlo Galiotto 3 years ago committed by Francisco Paisana
parent f9a2b8e068
commit 81cadac12e
4 changed files with 63 additions and 1 deletions
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3
srsgnb/src/stack/rrc/rrc_nr.cc
Unescape Escape View File

@ -495,10 +495,13 @@ void rrc_nr::handle_ul_dcch(uint16_t rnti, uint32_t lcid, srsran::const_byte_spa
break;
case ul_dcch_msg_type_c::c1_c_::types_opts::security_mode_complete:
u.handle_security_mode_complete(ul_dcch_msg.msg.c1().security_mode_complete());
break;
case ul_dcch_msg_type_c::c1_c_::types_opts::rrc_recfg_complete:
u.handle_rrc_reconfiguration_complete(ul_dcch_msg.msg.c1().rrc_recfg_complete());
break;
case ul_dcch_msg_type_c::c1_c_::types_opts::ul_info_transfer:
u.handle_ul_information_transfer(ul_dcch_msg.msg.c1().ul_info_transfer());
break;
default:
log_rx_pdu_fail(rnti, srb_to_lcid(lte_srb::srb0), pdu, "Unsupported UL-CCCH message type", false);
// TODO Remove user

1
srsgnb/src/stack/rrc/test/rrc_nr_test.cc
Unescape Escape View File

@ -165,6 +165,7 @@ void test_rrc_sa_connection()
TESTASSERT_SUCCESS(rrc_obj.add_user(0x4601, uecfg));
test_rrc_nr_connection_establishment(task_sched, rrc_obj, rlc_obj, 0x4601);
test_rrc_nr_security_mode_cmd(task_sched, rrc_obj, pdcp_obj, 0x4601);
}
} // namespace srsenb

55
srsgnb/src/stack/rrc/test/rrc_nr_test_helpers.cc
Unescape Escape View File

@ -24,7 +24,7 @@ void test_rrc_nr_connection_establishment(srsran::task_scheduler& task_sched,
{
srsran::unique_byte_buffer_t pdu;
// Send RRCSetupRequest
// Step 1 - Send RRCSetupRequest (UE -> gNB)
ul_ccch_msg_s setup_msg;
rrc_setup_request_ies_s& setup = setup_msg.msg.set_c1().set_rrc_setup_request().rrc_setup_request;
setup.establishment_cause.value = establishment_cause_opts::mo_data;
@ -36,17 +36,23 @@ void test_rrc_nr_connection_establishment(srsran::task_scheduler& task_sched,
pdu->N_bytes = bref.distance_bytes();
}
// Pass message to RRC
rrc_obj.write_pdu(rnti, 0, std::move(pdu));
task_sched.tic();
// Step 2 - RRCSetup (gNB -> UE)
// The response to RRCSetupRequest has been sent by RRC - check if this message (RRCSetup) is correct
TESTASSERT_EQ(rnti, rlc.last_sdu_rnti);
TESTASSERT_EQ(srsran::srb_to_lcid(srsran::nr_srb::srb0), rlc.last_sdu_lcid);
TESTASSERT(rlc.last_sdu->size() > 0);
// dl_ccch_msg will store the unpacked RRCSetup msg sent by the RRC
dl_ccch_msg_s dl_ccch_msg;
{
asn1::cbit_ref bref{rlc.last_sdu->data(), rlc.last_sdu->size()};
TESTASSERT_SUCCESS(dl_ccch_msg.unpack(bref));
}
// Test if the RRC sent the correct RRCSetup msg
TESTASSERT_EQ(dl_ccch_msg_type_c::types_opts::c1, dl_ccch_msg.msg.type().value);
TESTASSERT_EQ(dl_ccch_msg_type_c::c1_c_::types_opts::rrc_setup, dl_ccch_msg.msg.c1().type().value);
TESTASSERT_EQ(rrc_setup_s::crit_exts_c_::types_opts::rrc_setup,
@ -59,6 +65,7 @@ void test_rrc_nr_connection_establishment(srsran::task_scheduler& task_sched,
const srb_to_add_mod_s& srb1 = setup_ies.radio_bearer_cfg.srb_to_add_mod_list[0];
TESTASSERT_EQ(srsran::srb_to_lcid(srsran::nr_srb::srb1), srb1.srb_id);
// Step 3 - RRCSetupComplete (UE -> gNB) - Configure the msg and send it to RRC
ul_dcch_msg_s ul_dcch_msg;
rrc_setup_complete_s& complete = ul_dcch_msg.msg.set_c1().set_rrc_setup_complete();
complete.rrc_transaction_id = dl_ccch_msg.msg.c1().rrc_setup().rrc_transaction_id;
@ -80,4 +87,50 @@ void test_rrc_nr_connection_establishment(srsran::task_scheduler& task_sched,
rrc_obj.write_pdu(rnti, 1, std::move(pdu));
}
void test_rrc_nr_security_mode_cmd(srsran::task_scheduler& task_sched,
rrc_nr& rrc_obj,
pdcp_nr_rrc_tester& pdcp,
uint16_t rnti)
{
srsran::unique_byte_buffer_t pdu;
// Test whether there exists the SRB1 initiated in the Connection Establishment
// We test this as the SRB1 was setup in a different function
TESTASSERT_EQ(rnti, pdcp.last_sdu_rnti);
TESTASSERT_EQ(srsran::srb_to_lcid(srsran::nr_srb::srb1), 1);
// Send SecurityModeCommand (gNB -> UE)
dl_dcch_msg_s dl_dcch_msg;
{
asn1::cbit_ref bref{pdcp.last_sdu->data(), pdcp.last_sdu->size()};
TESTASSERT_SUCCESS(dl_dcch_msg.unpack(bref));
}
TESTASSERT_EQ(dl_dcch_msg_type_c::types_opts::c1, dl_dcch_msg.msg.type().value);
TESTASSERT_EQ(dl_dcch_msg_type_c::c1_c_::types_opts::security_mode_cmd, dl_dcch_msg.msg.c1().type().value);
TESTASSERT_EQ(security_mode_cmd_s::crit_exts_c_::types_opts::security_mode_cmd,
dl_dcch_msg.msg.c1().security_mode_cmd().crit_exts.type().value);
security_mode_cmd_ies_s& ies = dl_dcch_msg.msg.c1().security_mode_cmd().crit_exts.security_mode_cmd();
TESTASSERT_EQ(true, ies.security_cfg_smc.security_algorithm_cfg.integrity_prot_algorithm_present);
TESTASSERT_EQ(integrity_prot_algorithm_opts::nia0,
ies.security_cfg_smc.security_algorithm_cfg.integrity_prot_algorithm.value);
TESTASSERT_EQ(ciphering_algorithm_opts::nea0, ies.security_cfg_smc.security_algorithm_cfg.ciphering_algorithm.value);
// Send SecurityModeComplete (UE -> gNB)
ul_dcch_msg_s ul_dcch_msg;
auto& sec_cmd_complete_msg = ul_dcch_msg.msg.set_c1().set_security_mode_complete();
sec_cmd_complete_msg.rrc_transaction_id = dl_dcch_msg.msg.set_c1().security_mode_cmd().rrc_transaction_id;
auto& ies_complete = sec_cmd_complete_msg.crit_exts.set_security_mode_complete();
{
pdu = srsran::make_byte_buffer();
asn1::bit_ref bref{pdu->data(), pdu->get_tailroom()};
TESTASSERT_SUCCESS(ul_dcch_msg.pack(bref));
pdu->N_bytes = bref.distance_bytes();
}
// send message to RRC
rrc_obj.write_pdu(rnti, 1, std::move(pdu));
}
} // namespace srsenb

5
srsgnb/src/stack/rrc/test/rrc_nr_test_helpers.h
Unescape Escape View File

@ -65,6 +65,11 @@ void test_rrc_nr_connection_establishment(srsran::task_scheduler& task_sched,
rlc_nr_rrc_tester& rlc,
uint16_t rnti);
void test_rrc_nr_security_mode_cmd(srsran::task_scheduler& task_sched,
rrc_nr& rrc_obj,
pdcp_nr_rrc_tester& pdcp,
uint16_t rnti);
} // namespace srsenb
#endif // SRSRAN_RRC_NR_TEST_HELPERS_H

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