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open5gs/src/amf/context.c

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/*
* Copyright (C) 2019-2022 by Sukchan Lee <acetcom@gmail.com>
*
* This file is part of Open5GS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "ngap-path.h"
static amf_context_t self;
int __amf_log_domain;
int __gmm_log_domain;
static OGS_POOL(amf_gnb_pool, amf_gnb_t);
static OGS_POOL(amf_ue_pool, amf_ue_t);
static OGS_POOL(ran_ue_pool, ran_ue_t);
static OGS_POOL(amf_sess_pool, amf_sess_t);
static int context_initialized = 0;
static int num_of_ran_ue = 0;
static int num_of_amf_sess = 0;
static void stats_add_ran_ue(void);
static void stats_remove_ran_ue(void);
static void stats_add_amf_session(void);
static void stats_remove_amf_session(void);
void amf_context_init(void)
{
ogs_assert(context_initialized == 0);
/* Initialize AMF context */
memset(&self, 0, sizeof(amf_context_t));
ogs_log_install_domain(&__ogs_sctp_domain, "sctp", ogs_core()->log.level);
ogs_log_install_domain(&__ogs_ngap_domain, "ngap", ogs_core()->log.level);
ogs_log_install_domain(&__ogs_nas_domain, "nas", ogs_core()->log.level);
ogs_log_install_domain(&__amf_log_domain, "amf", ogs_core()->log.level);
ogs_log_install_domain(&__gmm_log_domain, "gmm", ogs_core()->log.level);
ogs_list_init(&self.ngap_list);
ogs_list_init(&self.ngap_list6);
/* Allocate TWICE the pool to check if maximum number of gNBs is reached */
ogs_pool_init(&amf_gnb_pool, ogs_app()->max.peer*2);
ogs_pool_init(&amf_ue_pool, ogs_app()->max.ue);
ogs_pool_init(&ran_ue_pool, ogs_app()->max.ue);
ogs_pool_init(&amf_sess_pool, ogs_app()->pool.sess);
ogs_pool_init(&self.m_tmsi, ogs_app()->max.ue);
ogs_list_init(&self.gnb_list);
ogs_list_init(&self.amf_ue_list);
self.gnb_addr_hash = ogs_hash_make();
ogs_assert(self.gnb_addr_hash);
self.gnb_id_hash = ogs_hash_make();
ogs_assert(self.gnb_id_hash);
self.guti_ue_hash = ogs_hash_make();
ogs_assert(self.guti_ue_hash);
self.suci_hash = ogs_hash_make();
ogs_assert(self.suci_hash);
self.supi_hash = ogs_hash_make();
ogs_assert(self.supi_hash);
context_initialized = 1;
}
void amf_context_final(void)
{
ogs_assert(context_initialized == 1);
amf_gnb_remove_all();
amf_ue_remove_all();
ogs_assert(self.gnb_addr_hash);
ogs_hash_destroy(self.gnb_addr_hash);
ogs_assert(self.gnb_id_hash);
ogs_hash_destroy(self.gnb_id_hash);
ogs_assert(self.guti_ue_hash);
ogs_hash_destroy(self.guti_ue_hash);
ogs_assert(self.suci_hash);
ogs_hash_destroy(self.suci_hash);
ogs_assert(self.supi_hash);
ogs_hash_destroy(self.supi_hash);
ogs_pool_final(&self.m_tmsi);
ogs_pool_final(&amf_sess_pool);
ogs_pool_final(&amf_ue_pool);
ogs_pool_final(&ran_ue_pool);
ogs_pool_final(&amf_gnb_pool);
context_initialized = 0;
}
amf_context_t *amf_self(void)
{
return &self;
}
static int amf_context_prepare(void)
{
self.relative_capacity = 0xff;
self.ngap_port = OGS_NGAP_SCTP_PORT;
return OGS_OK;
}
static int amf_context_validation(void)
{
if (ogs_list_first(&self.ngap_list) == NULL &&
ogs_list_first(&self.ngap_list6) == NULL) {
ogs_error("No amf.ngap in '%s'", ogs_app()->file);
return OGS_ERROR;
}
if (self.num_of_served_guami == 0) {
ogs_error("No amf.guami in '%s'", ogs_app()->file);
return OGS_ERROR;
}
if (self.num_of_served_tai == 0) {
ogs_error("No amf.tai in '%s'", ogs_app()->file);
return OGS_ERROR;
}
if (self.num_of_plmn_support == 0) {
ogs_error("No amf.plmn_support in '%s'", ogs_app()->file);
return OGS_ERROR;
}
if (self.plmn_support[0].num_of_s_nssai == 0) {
ogs_error("No amf.plmn_support.s_nssai in '%s'", ogs_app()->file);
return OGS_ERROR;
}
if (self.served_tai[0].list0.tai[0].num == 0 &&
self.served_tai[0].list2.num == 0) {
ogs_error("No amf.tai.plmn_id|tac in '%s'", ogs_app()->file);
return OGS_ERROR;
}
if (self.amf_name == NULL) {
ogs_error("No amf.amf_name in '%s'", ogs_app()->file);
return OGS_ERROR;
}
if (self.num_of_integrity_order == 0) {
ogs_error("No amf.security.integrity_order in '%s'",
ogs_app()->file);
return OGS_ERROR;
}
if (self.num_of_ciphering_order == 0) {
ogs_error("no amf.security.ciphering_order in '%s'",
ogs_app()->file);
return OGS_ERROR;
}
return OGS_OK;
}
int amf_context_parse_config(void)
{
int rv;
yaml_document_t *document = NULL;
ogs_yaml_iter_t root_iter;
document = ogs_app()->document;
ogs_assert(document);
rv = amf_context_prepare();
if (rv != OGS_OK) return rv;
ogs_yaml_iter_init(&root_iter, document);
while (ogs_yaml_iter_next(&root_iter)) {
const char *root_key = ogs_yaml_iter_key(&root_iter);
ogs_assert(root_key);
if (!strcmp(root_key, "amf")) {
ogs_yaml_iter_t amf_iter;
ogs_yaml_iter_recurse(&root_iter, &amf_iter);
while (ogs_yaml_iter_next(&amf_iter)) {
const char *amf_key = ogs_yaml_iter_key(&amf_iter);
ogs_assert(amf_key);
if (!strcmp(amf_key, "relative_capacity")) {
const char *v = ogs_yaml_iter_value(&amf_iter);
if (v) self.relative_capacity = atoi(v);
} else if (!strcmp(amf_key, "ngap")) {
ogs_yaml_iter_t ngap_array, ngap_iter;
ogs_yaml_iter_recurse(&amf_iter, &ngap_array);
do {
int family = AF_UNSPEC;
int i, num = 0;
const char *hostname[OGS_MAX_NUM_OF_HOSTNAME];
uint16_t port = self.ngap_port;
const char *dev = NULL;
ogs_sockaddr_t *addr = NULL;
ogs_sockopt_t option;
bool is_option = false;
if (ogs_yaml_iter_type(&ngap_array) ==
YAML_MAPPING_NODE) {
memcpy(&ngap_iter, &ngap_array,
sizeof(ogs_yaml_iter_t));
} else if (ogs_yaml_iter_type(&ngap_array) ==
YAML_SEQUENCE_NODE) {
if (!ogs_yaml_iter_next(&ngap_array))
break;
ogs_yaml_iter_recurse(&ngap_array, &ngap_iter);
} else if (ogs_yaml_iter_type(&ngap_array) ==
YAML_SCALAR_NODE) {
break;
} else
ogs_assert_if_reached();
while (ogs_yaml_iter_next(&ngap_iter)) {
const char *ngap_key =
ogs_yaml_iter_key(&ngap_iter);
ogs_assert(ngap_key);
if (!strcmp(ngap_key, "family")) {
const char *v = ogs_yaml_iter_value(&ngap_iter);
if (v) family = atoi(v);
if (family != AF_UNSPEC &&
family != AF_INET && family != AF_INET6) {
ogs_warn("Ignore family(%d) : "
"AF_UNSPEC(%d), "
"AF_INET(%d), AF_INET6(%d) ",
family, AF_UNSPEC, AF_INET, AF_INET6);
family = AF_UNSPEC;
}
} else if (!strcmp(ngap_key, "addr") ||
!strcmp(ngap_key, "name")) {
ogs_yaml_iter_t hostname_iter;
ogs_yaml_iter_recurse(
&ngap_iter, &hostname_iter);
ogs_assert(ogs_yaml_iter_type(&hostname_iter) !=
YAML_MAPPING_NODE);
do {
if (ogs_yaml_iter_type(&hostname_iter) ==
YAML_SEQUENCE_NODE) {
if (!ogs_yaml_iter_next(&hostname_iter))
break;
}
ogs_assert(num < OGS_MAX_NUM_OF_HOSTNAME);
hostname[num++] =
ogs_yaml_iter_value(&hostname_iter);
} while (
ogs_yaml_iter_type(&hostname_iter) ==
YAML_SEQUENCE_NODE);
} else if (!strcmp(ngap_key, "port")) {
const char *v = ogs_yaml_iter_value(&ngap_iter);
if (v) port = atoi(v);
} else if (!strcmp(ngap_key, "dev")) {
dev = ogs_yaml_iter_value(&ngap_iter);
} else if (!strcmp(ngap_key, "option")) {
rv = ogs_app_config_parse_sockopt(
&ngap_iter, &option);
if (rv != OGS_OK) return rv;
is_option = true;
} else
ogs_warn("unknown key `%s`", ngap_key);
}
addr = NULL;
for (i = 0; i < num; i++) {
rv = ogs_addaddrinfo(&addr,
family, hostname[i], port, 0);
ogs_assert(rv == OGS_OK);
}
if (addr) {
if (ogs_app()->parameter.no_ipv4 == 0)
ogs_socknode_add(
&self.ngap_list, AF_INET, addr,
is_option ? &option : NULL);
if (ogs_app()->parameter.no_ipv6 == 0)
ogs_socknode_add(
&self.ngap_list6, AF_INET6, addr,
is_option ? &option : NULL);
ogs_freeaddrinfo(addr);
}
if (dev) {
rv = ogs_socknode_probe(
ogs_app()->parameter.no_ipv4 ?
NULL : &self.ngap_list,
ogs_app()->parameter.no_ipv6 ?
NULL : &self.ngap_list6,
dev, port,
is_option ? &option : NULL);
ogs_assert(rv == OGS_OK);
}
} while (ogs_yaml_iter_type(&ngap_array) ==
YAML_SEQUENCE_NODE);
if (ogs_list_first(&self.ngap_list) == NULL &&
ogs_list_first(&self.ngap_list6) == NULL) {
rv = ogs_socknode_probe(
ogs_app()->parameter.no_ipv4 ?
NULL : &self.ngap_list,
ogs_app()->parameter.no_ipv6 ?
NULL : &self.ngap_list6,
NULL, self.ngap_port, NULL);
ogs_assert(rv == OGS_OK);
}
} else if (!strcmp(amf_key, "guami")) {
ogs_yaml_iter_t guami_array, guami_iter;
ogs_yaml_iter_recurse(&amf_iter, &guami_array);
do {
const char *mcc = NULL, *mnc = NULL;
const char *region = NULL, *set = NULL;
const char *pointer = NULL;
ogs_assert(self.num_of_served_guami <
MAX_NUM_OF_SERVED_GUAMI);
if (ogs_yaml_iter_type(&guami_array) ==
YAML_MAPPING_NODE) {
memcpy(&guami_iter, &guami_array,
sizeof(ogs_yaml_iter_t));
} else if (ogs_yaml_iter_type(&guami_array) ==
YAML_SEQUENCE_NODE) {
if (!ogs_yaml_iter_next(&guami_array))
break;
ogs_yaml_iter_recurse(&guami_array,
&guami_iter);
} else if (ogs_yaml_iter_type(&guami_array) ==
YAML_SCALAR_NODE) {
break;
} else
ogs_assert_if_reached();
while (ogs_yaml_iter_next(&guami_iter)) {
const char *guami_key =
ogs_yaml_iter_key(&guami_iter);
ogs_assert(guami_key);
if (!strcmp(guami_key, "plmn_id")) {
ogs_yaml_iter_t plmn_id_iter;
ogs_yaml_iter_recurse(&guami_iter,
&plmn_id_iter);
while (ogs_yaml_iter_next(&plmn_id_iter)) {
const char *plmn_id_key =
ogs_yaml_iter_key(&plmn_id_iter);
ogs_assert(plmn_id_key);
if (!strcmp(plmn_id_key, "mcc")) {
mcc = ogs_yaml_iter_value(
&plmn_id_iter);
} else if (!strcmp(plmn_id_key, "mnc")) {
mnc = ogs_yaml_iter_value(
&plmn_id_iter);
}
}
if (mcc && mnc) {
ogs_plmn_id_build(
&self.served_guami[
self.num_of_served_guami].
plmn_id,
atoi(mcc), atoi(mnc), strlen(mnc));
}
} else if (!strcmp(guami_key, "amf_id")) {
ogs_yaml_iter_t amf_id_iter;
ogs_yaml_iter_recurse(&guami_iter,
&amf_id_iter);
while (ogs_yaml_iter_next(&amf_id_iter)) {
const char *amf_id_key =
ogs_yaml_iter_key(&amf_id_iter);
ogs_assert(amf_id_key);
if (!strcmp(amf_id_key, "region")) {
region = ogs_yaml_iter_value(
&amf_id_iter);
} else if (!strcmp(amf_id_key, "set")) {
set = ogs_yaml_iter_value(
&amf_id_iter);
} else if (!strcmp(amf_id_key, "pointer")) {
pointer = ogs_yaml_iter_value(
&amf_id_iter);
}
}
if (region && set) {
ogs_amf_id_build(
&self.served_guami[
self.num_of_served_guami].
amf_id,
atoi(region), atoi(set),
pointer ? atoi(pointer) : 0);
}
} else
ogs_warn("unknown key `%s`", guami_key);
}
if (mnc && mcc && region && set) {
self.num_of_served_guami++;
} else {
ogs_warn("Ignore guami : "
"mcc(%s), mnc(%s), region(%s), set(%s)",
mcc, mnc, region, set);
}
} while (ogs_yaml_iter_type(&guami_array) ==
YAML_SEQUENCE_NODE);
} else if (!strcmp(amf_key, "tai")) {
int num_of_list0 = 0;
ogs_5gs_tai0_list_t *list0 = NULL;
ogs_5gs_tai2_list_t *list2 = NULL;
ogs_assert(self.num_of_served_tai <
OGS_MAX_NUM_OF_SERVED_TAI);
list0 = &self.served_tai[self.num_of_served_tai].list0;
ogs_assert(list0);
list2 = &self.served_tai[self.num_of_served_tai].list2;
ogs_assert(list2);
ogs_yaml_iter_t tai_array, tai_iter;
ogs_yaml_iter_recurse(&amf_iter, &tai_array);
do {
const char *mcc = NULL, *mnc = NULL;
ogs_uint24_t tac[OGS_MAX_NUM_OF_TAI];
int num_of_tac = 0;
if (ogs_yaml_iter_type(&tai_array) ==
YAML_MAPPING_NODE) {
memcpy(&tai_iter, &tai_array,
sizeof(ogs_yaml_iter_t));
} else if (ogs_yaml_iter_type(&tai_array) ==
YAML_SEQUENCE_NODE) {
if (!ogs_yaml_iter_next(&tai_array))
break;
ogs_yaml_iter_recurse(&tai_array,
&tai_iter);
} else if (ogs_yaml_iter_type(&tai_array) ==
YAML_SCALAR_NODE) {
break;
} else
ogs_assert_if_reached();
while (ogs_yaml_iter_next(&tai_iter)) {
const char *tai_key = ogs_yaml_iter_key(&tai_iter);
ogs_assert(tai_key);
if (!strcmp(tai_key, "plmn_id")) {
ogs_yaml_iter_t plmn_id_iter;
ogs_yaml_iter_recurse(&tai_iter, &plmn_id_iter);
while (ogs_yaml_iter_next(&plmn_id_iter)) {
const char *plmn_id_key =
ogs_yaml_iter_key(&plmn_id_iter);
ogs_assert(plmn_id_key);
if (!strcmp(plmn_id_key, "mcc")) {
mcc = ogs_yaml_iter_value(
&plmn_id_iter);
} else if (!strcmp(plmn_id_key, "mnc")) {
mnc = ogs_yaml_iter_value(
&plmn_id_iter);
}
}
} else if (!strcmp(tai_key, "tac")) {
ogs_yaml_iter_t tac_iter;
ogs_yaml_iter_recurse(&tai_iter, &tac_iter);
ogs_assert(ogs_yaml_iter_type(&tac_iter) !=
YAML_MAPPING_NODE);
do {
const char *v = NULL;
ogs_assert(num_of_tac <
OGS_MAX_NUM_OF_TAI);
if (ogs_yaml_iter_type(&tac_iter) ==
YAML_SEQUENCE_NODE) {
if (!ogs_yaml_iter_next(&tac_iter))
break;
}
v = ogs_yaml_iter_value(&tac_iter);
if (v) {
tac[num_of_tac].v = atoi(v);
num_of_tac++;
}
} while (
ogs_yaml_iter_type(&tac_iter) ==
YAML_SEQUENCE_NODE);
} else
ogs_warn("unknown key `%s`", tai_key);
}
if (mcc && mnc && num_of_tac) {
if (num_of_tac == 1) {
ogs_plmn_id_build(
&list2->tai[list2->num].plmn_id,
atoi(mcc), atoi(mnc), strlen(mnc));
list2->tai[list2->num].tac.v = tac[0].v;
list2->num++;
if (list2->num > 1)
list2->type = OGS_TAI2_TYPE;
else
list2->type = OGS_TAI1_TYPE;
} else if (num_of_tac > 1) {
int i;
ogs_plmn_id_build(
&list0->tai[num_of_list0].plmn_id,
atoi(mcc), atoi(mnc), strlen(mnc));
for (i = 0; i < num_of_tac; i++) {
list0->tai[num_of_list0].tac[i].v =
tac[i].v;
}
list0->tai[num_of_list0].num = num_of_tac;
list0->tai[num_of_list0].type = OGS_TAI0_TYPE;
num_of_list0++;
}
} else {
ogs_warn("Ignore tai : mcc(%p), mnc(%p), "
"num_of_tac(%d)", mcc, mnc, num_of_tac);
}
} while (ogs_yaml_iter_type(&tai_array) ==
YAML_SEQUENCE_NODE);
if (list2->num || num_of_list0) {
self.num_of_served_tai++;
}
} else if (!strcmp(amf_key, "plmn_support")) {
ogs_yaml_iter_t plmn_support_array, plmn_support_iter;
ogs_yaml_iter_recurse(&amf_iter, &plmn_support_array);
do {
const char *mnc = NULL, *mcc = NULL;
ogs_assert(self.num_of_plmn_support <
OGS_MAX_NUM_OF_PLMN);
if (ogs_yaml_iter_type(&plmn_support_array) ==
YAML_MAPPING_NODE) {
memcpy(&plmn_support_iter, &plmn_support_array,
sizeof(ogs_yaml_iter_t));
} else if (ogs_yaml_iter_type(&plmn_support_array) ==
YAML_SEQUENCE_NODE) {
if (!ogs_yaml_iter_next(&plmn_support_array))
break;
ogs_yaml_iter_recurse(&plmn_support_array,
&plmn_support_iter);
} else if (ogs_yaml_iter_type(&plmn_support_array) ==
YAML_SCALAR_NODE) {
break;
} else
ogs_assert_if_reached();
while (ogs_yaml_iter_next(&plmn_support_iter)) {
const char *plmn_support_key =
ogs_yaml_iter_key(&plmn_support_iter);
ogs_assert(plmn_support_key);
if (!strcmp(plmn_support_key, "plmn_id")) {
ogs_yaml_iter_t plmn_id_iter;
ogs_yaml_iter_recurse(&plmn_support_iter,
&plmn_id_iter);
while (ogs_yaml_iter_next(&plmn_id_iter)) {
const char *plmn_id_key =
ogs_yaml_iter_key(&plmn_id_iter);
ogs_assert(plmn_id_key);
if (!strcmp(plmn_id_key, "mcc")) {
mcc = ogs_yaml_iter_value(
&plmn_id_iter);
} else if (!strcmp(plmn_id_key, "mnc")) {
mnc = ogs_yaml_iter_value(
&plmn_id_iter);
}
}
if (mcc && mnc) {
ogs_plmn_id_build(
&self.plmn_support[
self.num_of_plmn_support].
plmn_id,
atoi(mcc), atoi(mnc), strlen(mnc));
}
} else if (!strcmp(plmn_support_key, "s_nssai")) {
ogs_yaml_iter_t s_nssai_array, s_nssai_iter;
ogs_yaml_iter_recurse(&plmn_support_iter,
&s_nssai_array);
do {
ogs_s_nssai_t *s_nssai = NULL;
const char *sst = NULL, *sd = NULL;
ogs_assert(
self.plmn_support[
self.num_of_plmn_support].
num_of_s_nssai <
OGS_MAX_NUM_OF_SLICE);
s_nssai = &self.plmn_support[
self.num_of_plmn_support].s_nssai[
self.plmn_support[
self.num_of_plmn_support].
num_of_s_nssai];
ogs_assert(s_nssai);
if (ogs_yaml_iter_type(&s_nssai_array) ==
YAML_MAPPING_NODE) {
memcpy(&s_nssai_iter, &s_nssai_array,
sizeof(ogs_yaml_iter_t));
} else if (ogs_yaml_iter_type(
&s_nssai_array) ==
YAML_SEQUENCE_NODE) {
if (!ogs_yaml_iter_next(&s_nssai_array))
break;
ogs_yaml_iter_recurse(&s_nssai_array,
&s_nssai_iter);
} else if (ogs_yaml_iter_type(
&s_nssai_array) ==
YAML_SCALAR_NODE) {
break;
} else
ogs_assert_if_reached();
while (ogs_yaml_iter_next(&s_nssai_iter)) {
const char *s_nssai_key =
ogs_yaml_iter_key(&s_nssai_iter);
ogs_assert(s_nssai_key);
if (!strcmp(s_nssai_key, "sst")) {
sst = ogs_yaml_iter_value(
&s_nssai_iter);
} else if (!strcmp(
s_nssai_key, "sd")) {
sd = ogs_yaml_iter_value(
&s_nssai_iter);
}
}
if (sst) {
s_nssai->sst = atoi(sst);
if (sd)
s_nssai->sd =
ogs_uint24_from_string(
(char*)sd);
else
s_nssai->sd.v =
OGS_S_NSSAI_NO_SD_VALUE;
self.plmn_support[
self.num_of_plmn_support].
num_of_s_nssai++;
}
} while (ogs_yaml_iter_type(&s_nssai_array) ==
YAML_SEQUENCE_NODE);
} else
ogs_warn("unknown key `%s`", plmn_support_key);
}
if (self.plmn_support[
self.num_of_plmn_support].num_of_s_nssai &&
mcc && mnc) {
self.num_of_plmn_support++;
} else {
ogs_warn("Ignore plmn : "
"s_nssai(%d) mcc(%s), mnc(%s)",
self.plmn_support[
self.num_of_plmn_support].num_of_s_nssai,
mcc, mnc);
self.plmn_support[
self.num_of_plmn_support].num_of_s_nssai = 0;
}
} while (ogs_yaml_iter_type(&plmn_support_array) ==
YAML_SEQUENCE_NODE);
} else if (!strcmp(amf_key, "security")) {
ogs_yaml_iter_t security_iter;
ogs_yaml_iter_recurse(&amf_iter, &security_iter);
while (ogs_yaml_iter_next(&security_iter)) {
const char *security_key =
ogs_yaml_iter_key(&security_iter);
ogs_assert(security_key);
if (!strcmp(security_key, "integrity_order")) {
ogs_yaml_iter_t integrity_order_iter;
ogs_yaml_iter_recurse(&security_iter,
&integrity_order_iter);
ogs_assert(ogs_yaml_iter_type(
&integrity_order_iter) !=
YAML_MAPPING_NODE);
do {
const char *v = NULL;
if (ogs_yaml_iter_type(&integrity_order_iter) ==
YAML_SEQUENCE_NODE) {
if (!ogs_yaml_iter_next(
&integrity_order_iter))
break;
}
v = ogs_yaml_iter_value(&integrity_order_iter);
if (v) {
int integrity_index =
self.num_of_integrity_order;
if (strcmp(v, "NIA0") == 0) {
self.integrity_order[integrity_index] =
OGS_NAS_SECURITY_ALGORITHMS_NIA0;
self.num_of_integrity_order++;
} else if (strcmp(v, "NIA1") == 0) {
self.integrity_order[integrity_index] =
OGS_NAS_SECURITY_ALGORITHMS_128_NIA1;
self.num_of_integrity_order++;
} else if (strcmp(v, "NIA2") == 0) {
self.integrity_order[integrity_index] =
OGS_NAS_SECURITY_ALGORITHMS_128_NIA2;
self.num_of_integrity_order++;
} else if (strcmp(v, "NIA3") == 0) {
self.integrity_order[integrity_index] =
OGS_NAS_SECURITY_ALGORITHMS_128_NIA3;
self.num_of_integrity_order++;
}
}
} while (
ogs_yaml_iter_type(&integrity_order_iter) ==
YAML_SEQUENCE_NODE);
} else if (!strcmp(security_key, "ciphering_order")) {
ogs_yaml_iter_t ciphering_order_iter;
ogs_yaml_iter_recurse(&security_iter,
&ciphering_order_iter);
ogs_assert(ogs_yaml_iter_type(
&ciphering_order_iter) != YAML_MAPPING_NODE);
do {
const char *v = NULL;
if (ogs_yaml_iter_type(&ciphering_order_iter) ==
YAML_SEQUENCE_NODE) {
if (!ogs_yaml_iter_next(
&ciphering_order_iter))
break;
}
v = ogs_yaml_iter_value(&ciphering_order_iter);
if (v) {
int ciphering_index =
self.num_of_ciphering_order;
if (strcmp(v, "NEA0") == 0) {
self.ciphering_order[ciphering_index] =
OGS_NAS_SECURITY_ALGORITHMS_NEA0;
self.num_of_ciphering_order++;
} else if (strcmp(v, "NEA1") == 0) {
self.ciphering_order[ciphering_index] =
OGS_NAS_SECURITY_ALGORITHMS_128_NEA1;
self.num_of_ciphering_order++;
} else if (strcmp(v, "NEA2") == 0) {
self.ciphering_order[ciphering_index] =
OGS_NAS_SECURITY_ALGORITHMS_128_NEA2;
self.num_of_ciphering_order++;
} else if (strcmp(v, "NEA3") == 0) {
self.ciphering_order[ciphering_index] =
OGS_NAS_SECURITY_ALGORITHMS_128_NEA3;
self.num_of_ciphering_order++;
}
}
} while (
ogs_yaml_iter_type(&ciphering_order_iter) ==
YAML_SEQUENCE_NODE);
}
}
} else if (!strcmp(amf_key, "network_name")) {
ogs_yaml_iter_t network_name_iter;
ogs_yaml_iter_recurse(&amf_iter, &network_name_iter);
while (ogs_yaml_iter_next(&network_name_iter)) {
const char *network_name_key =
ogs_yaml_iter_key(&network_name_iter);
ogs_assert(network_name_key);
if (!strcmp(network_name_key, "full")) {
ogs_nas_network_name_t *network_full_name =
&self.full_name;
const char *c_network_name =
ogs_yaml_iter_value(&network_name_iter);
uint8_t size = strlen(c_network_name);
uint8_t i;
for (i = 0;i<size;i++) {
/* Workaround to convert the ASCII to USC-2 */
network_full_name->name[i*2] = 0;
network_full_name->name[(i*2)+1] =
c_network_name[i];
}
network_full_name->length = size*2+1;
network_full_name->coding_scheme = 1;
network_full_name->ext = 1;
} else if (!strcmp(network_name_key, "short")) {
ogs_nas_network_name_t *network_short_name =
&self.short_name;
const char *c_network_name =
ogs_yaml_iter_value(&network_name_iter);
uint8_t size = strlen(c_network_name);
uint8_t i;
for (i = 0;i<size;i++) {
/* Workaround to convert the ASCII to USC-2 */
network_short_name->name[i*2] = 0;
network_short_name->name[(i*2)+1] =
c_network_name[i];
}
network_short_name->length = size*2+1;
network_short_name->coding_scheme = 1;
network_short_name->ext = 1;
}
}
} else if (!strcmp(amf_key, "amf_name")) {
self.amf_name = ogs_yaml_iter_value(&amf_iter);
} else if (!strcmp(amf_key, "sbi")) {
/* handle config in sbi library */
} else if (!strcmp(amf_key, "service_name")) {
/* handle config in sbi library */
} else if (!strcmp(amf_key, "discovery")) {
/* handle config in sbi library */
} else
ogs_warn("unknown key `%s`", amf_key);
}
}
}
rv = amf_context_validation();
if (rv != OGS_OK) return rv;
return OGS_OK;
}
amf_gnb_t *amf_gnb_add(ogs_sock_t *sock, ogs_sockaddr_t *addr)
{
amf_gnb_t *gnb = NULL;
amf_event_t e;
ogs_assert(sock);
ogs_assert(addr);
ogs_pool_alloc(&amf_gnb_pool, &gnb);
ogs_assert(gnb);
memset(gnb, 0, sizeof *gnb);
/* Defaut RAT-Type */
gnb->rat_type = OpenAPI_rat_type_NR;
gnb->sctp.sock = sock;
gnb->sctp.addr = addr;
gnb->sctp.type = amf_gnb_sock_type(gnb->sctp.sock);
if (gnb->sctp.type == SOCK_STREAM) {
gnb->sctp.poll.read = ogs_pollset_add(ogs_app()->pollset,
OGS_POLLIN, sock->fd, ngap_recv_upcall, sock);
ogs_assert(gnb->sctp.poll.read);
}
gnb->max_num_of_ostreams = 0;
gnb->ostream_id = 0;
ogs_list_init(&gnb->ran_ue_list);
ogs_hash_set(self.gnb_addr_hash,
gnb->sctp.addr, sizeof(ogs_sockaddr_t), gnb);
memset(&e, 0, sizeof(e));
e.gnb = gnb;
ogs_fsm_init(&gnb->sm, ngap_state_initial, ngap_state_final, &e);
ogs_list_add(&self.gnb_list, gnb);
amf_metrics_inst_global_inc(AMF_METR_GLOB_GAUGE_GNB);
ogs_info("[Added] Number of gNBs is now %d",
ogs_list_count(&self.gnb_list));
return gnb;
}
void amf_gnb_remove(amf_gnb_t *gnb)
{
amf_event_t e;
ogs_assert(gnb);
ogs_assert(gnb->sctp.sock);
ogs_list_remove(&self.gnb_list, gnb);
memset(&e, 0, sizeof(e));
e.gnb = gnb;
ogs_fsm_fini(&gnb->sm, &e);
ogs_hash_set(self.gnb_addr_hash,
gnb->sctp.addr, sizeof(ogs_sockaddr_t), NULL);
ogs_hash_set(self.gnb_id_hash, &gnb->gnb_id, sizeof(gnb->gnb_id), NULL);
ogs_sctp_flush_and_destroy(&gnb->sctp);
ogs_pool_free(&amf_gnb_pool, gnb);
amf_metrics_inst_global_dec(AMF_METR_GLOB_GAUGE_GNB);
ogs_info("[Removed] Number of gNBs is now %d",
ogs_list_count(&self.gnb_list));
}
void amf_gnb_remove_all()
{
amf_gnb_t *gnb = NULL, *next_gnb = NULL;
ogs_list_for_each_safe(&self.gnb_list, next_gnb, gnb)
amf_gnb_remove(gnb);
}
amf_gnb_t *amf_gnb_find_by_addr(ogs_sockaddr_t *addr)
{
ogs_assert(addr);
return (amf_gnb_t *)ogs_hash_get(self.gnb_addr_hash,
addr, sizeof(ogs_sockaddr_t));
return NULL;
}
amf_gnb_t *amf_gnb_find_by_gnb_id(uint32_t gnb_id)
{
return (amf_gnb_t *)ogs_hash_get(self.gnb_id_hash, &gnb_id, sizeof(gnb_id));
}
int amf_gnb_set_gnb_id(amf_gnb_t *gnb, uint32_t gnb_id)
{
ogs_assert(gnb);
ogs_hash_set(self.gnb_id_hash, &gnb_id, sizeof(gnb_id), NULL);
gnb->gnb_id = gnb_id;
ogs_hash_set(self.gnb_id_hash, &gnb->gnb_id, sizeof(gnb->gnb_id), gnb);
return OGS_OK;
}
int amf_gnb_sock_type(ogs_sock_t *sock)
{
ogs_socknode_t *snode = NULL;
ogs_assert(sock);
ogs_list_for_each(&amf_self()->ngap_list, snode)
if (snode->sock == sock) return SOCK_SEQPACKET;
ogs_list_for_each(&amf_self()->ngap_list6, snode)
if (snode->sock == sock) return SOCK_SEQPACKET;
return SOCK_STREAM;
}
amf_gnb_t *amf_gnb_cycle(amf_gnb_t *gnb)
{
return ogs_pool_cycle(&amf_gnb_pool, gnb);
}
/** ran_ue_context handling function */
ran_ue_t *ran_ue_add(amf_gnb_t *gnb, uint32_t ran_ue_ngap_id)
{
ran_ue_t *ran_ue = NULL;
ogs_assert(gnb);
ogs_pool_alloc(&ran_ue_pool, &ran_ue);
ogs_assert(ran_ue);
memset(ran_ue, 0, sizeof *ran_ue);
ran_ue->index = ogs_pool_index(&ran_ue_pool, ran_ue);
ogs_assert(ran_ue->index > 0 && ran_ue->index <= ogs_app()->max.ue);
ran_ue->ran_ue_ngap_id = ran_ue_ngap_id;
ran_ue->amf_ue_ngap_id = ran_ue->index;
/*
* SCTP output stream identification
* Default ogs_app()->parameter.sctp_streams : 30
* 0 : Non UE signalling
* 1-29 : UE specific association
*/
ogs_assert((gnb->max_num_of_ostreams-1) >= 1); /* NEXT_ID(MAX >= MIN) */
ran_ue->gnb_ostream_id =
OGS_NEXT_ID(gnb->ostream_id, 1, gnb->max_num_of_ostreams-1);
ran_ue->t_ng_holding = ogs_timer_add(
ogs_app()->timer_mgr, amf_timer_ng_holding_timer_expire, ran_ue);
ogs_assert(ran_ue->t_ng_holding);
ran_ue->gnb = gnb;
ogs_list_add(&gnb->ran_ue_list, ran_ue);
stats_add_ran_ue();
return ran_ue;
}
void ran_ue_remove(ran_ue_t *ran_ue)
{
ogs_assert(ran_ue);
ogs_assert(ran_ue->gnb);
ogs_list_remove(&ran_ue->gnb->ran_ue_list, ran_ue);
ogs_assert(ran_ue->t_ng_holding);
ogs_timer_delete(ran_ue->t_ng_holding);
ogs_pool_free(&ran_ue_pool, ran_ue);
stats_remove_ran_ue();
}
void ran_ue_switch_to_gnb(ran_ue_t *ran_ue, amf_gnb_t *new_gnb)
{
ogs_assert(ran_ue);
ogs_assert(ran_ue->gnb);
ogs_assert(new_gnb);
/* Remove from the old gnb */
ogs_list_remove(&ran_ue->gnb->ran_ue_list, ran_ue);
/* Add to the new gnb */
ogs_list_add(&new_gnb->ran_ue_list, ran_ue);
/* Switch to gnb */
ran_ue->gnb = new_gnb;
}
ran_ue_t *ran_ue_find_by_ran_ue_ngap_id(
amf_gnb_t *gnb, uint32_t ran_ue_ngap_id)
{
ran_ue_t *ran_ue = NULL;
ogs_list_for_each(&gnb->ran_ue_list, ran_ue) {
if (ran_ue_ngap_id == ran_ue->ran_ue_ngap_id)
break;
}
return ran_ue;
}
ran_ue_t *ran_ue_find(uint32_t index)
{
return ogs_pool_find(&ran_ue_pool, index);
}
ran_ue_t *ran_ue_find_by_amf_ue_ngap_id(uint64_t amf_ue_ngap_id)
{
return ran_ue_find(amf_ue_ngap_id);
}
ran_ue_t *ran_ue_cycle(ran_ue_t *ran_ue)
{
return ogs_pool_cycle(&ran_ue_pool, ran_ue);
}
void amf_ue_new_guti(amf_ue_t *amf_ue)
{
if (amf_ue->next.m_tmsi) {
ogs_warn("GUTI has already been allocated");
return;
}
/*
* TS24.501
* 5.3.3 Temporary identities
*
* The AMF shall assign a new 5G-GUTI for a particular UE:
*
* a) during a successful initial registration procedure;
* b) during a successful registration procedure
* for mobility registration update; and
* c) after a successful service request procedure invoked
* as a response to a paging request from the network and
* before the release of the N1 NAS signalling connection
* as specified in subclause 5.4.4.1.
*
* The AMF should assign a new 5G-GUTI for a particular UE
* during a successful registration procedure
* for periodic registration update.
*
* The AMF may assign a new 5G-GUTI at any time for a particular UE
* by performing the generic UE configuration update procedure.
*/
memset(&amf_ue->next.guti, 0, sizeof(ogs_nas_5gs_guti_t));
ogs_assert(amf_ue->guami);
ogs_nas_from_plmn_id(
&amf_ue->next.guti.nas_plmn_id, &amf_ue->guami->plmn_id);
memcpy(&amf_ue->next.guti.amf_id,
&amf_ue->guami->amf_id, sizeof(ogs_amf_id_t));
amf_ue->next.m_tmsi = amf_m_tmsi_alloc();
ogs_assert(amf_ue->next.m_tmsi);
amf_ue->next.guti.m_tmsi = *(amf_ue->next.m_tmsi);
}
void amf_ue_confirm_guti(amf_ue_t *amf_ue)
{
ogs_assert(amf_ue->next.m_tmsi);
if (amf_ue->current.m_tmsi) {
/* AMF has a VALID GUTI
* As such, we need to remove previous GUTI in hash table */
ogs_hash_set(self.guti_ue_hash,
&amf_ue->current.guti, sizeof(ogs_nas_5gs_guti_t), NULL);
ogs_assert(amf_m_tmsi_free(amf_ue->current.m_tmsi) == OGS_OK);
}
/*
* TS24.501
* 5.3.3 Temporary identities
*
* The AMF shall assign a new 5G-GUTI for a particular UE:
*
* a) during a successful initial registration procedure;
* b) during a successful registration procedure
* for mobility registration update; and
* c) after a successful service request procedure invoked
* as a response to a paging request from the network and
* before the release of the N1 NAS signalling connection
* as specified in subclause 5.4.4.1.
*
* The AMF should assign a new 5G-GUTI for a particular UE
* during a successful registration procedure
* for periodic registration update.
*
* The AMF may assign a new 5G-GUTI at any time for a particular UE
* by performing the generic UE configuration update procedure.
*/
/* Copying from Current to Next Guti */
amf_ue->current.m_tmsi = amf_ue->next.m_tmsi;
memcpy(&amf_ue->current.guti,
&amf_ue->next.guti, sizeof(ogs_nas_5gs_guti_t));
/* Hashing Current GUTI */
ogs_hash_set(self.guti_ue_hash,
&amf_ue->current.guti, sizeof(ogs_nas_5gs_guti_t), amf_ue);
/* Clear Next GUTI */
amf_ue->next.m_tmsi = NULL;
}
amf_ue_t *amf_ue_add(ran_ue_t *ran_ue)
{
amf_gnb_t *gnb = NULL;
amf_ue_t *amf_ue = NULL;
ogs_assert(ran_ue);
gnb = ran_ue->gnb;
ogs_assert(gnb);
ogs_pool_alloc(&amf_ue_pool, &amf_ue);
ogs_assert(amf_ue);
memset(amf_ue, 0, sizeof *amf_ue);
/* SBI Type */
amf_ue->sbi.type = OGS_SBI_OBJ_UE_TYPE;
/* SBI Features */
OGS_SBI_FEATURES_SET(amf_ue->am_policy_control_features,
OGS_SBI_NPCF_AM_POLICY_CONTROL_UE_AMBR_AUTHORIZATION);
ogs_list_init(&amf_ue->sess_list);
/* Initialization */
amf_ue->guami = &amf_self()->served_guami[0];
amf_ue->nas.access_type = OGS_ACCESS_TYPE_3GPP;
amf_ue->nas.amf.ksi = OGS_NAS_KSI_NO_KEY_IS_AVAILABLE;
amf_ue->abba_len = 2;
/* Add All Timers */
amf_ue->t3513.timer = ogs_timer_add(
ogs_app()->timer_mgr, amf_timer_t3513_expire, amf_ue);
amf_ue->t3513.pkbuf = NULL;
amf_ue->t3522.timer = ogs_timer_add(
ogs_app()->timer_mgr, amf_timer_t3522_expire, amf_ue);
amf_ue->t3522.pkbuf = NULL;
amf_ue->t3550.timer = ogs_timer_add(
ogs_app()->timer_mgr, amf_timer_t3550_expire, amf_ue);
amf_ue->t3550.pkbuf = NULL;
amf_ue->t3555.timer = ogs_timer_add(
ogs_app()->timer_mgr, amf_timer_t3555_expire, amf_ue);
amf_ue->t3555.pkbuf = NULL;
amf_ue->t3560.timer = ogs_timer_add(
ogs_app()->timer_mgr, amf_timer_t3560_expire, amf_ue);
amf_ue->t3560.pkbuf = NULL;
amf_ue->t3570.timer = ogs_timer_add(
ogs_app()->timer_mgr, amf_timer_t3570_expire, amf_ue);
amf_ue->t3570.pkbuf = NULL;
amf_ue_fsm_init(amf_ue);
ogs_list_add(&self.amf_ue_list, amf_ue);
ogs_info("[Added] Number of AMF-UEs is now %d",
ogs_list_count(&self.amf_ue_list));
return amf_ue;
}
void amf_ue_remove(amf_ue_t *amf_ue)
{
int i;
ogs_assert(amf_ue);
ogs_list_remove(&self.amf_ue_list, amf_ue);
amf_ue_fsm_fini(amf_ue);
/* Clear Paging Info */
AMF_UE_CLEAR_PAGING_INFO(amf_ue);
/* Clear N2 Transfer */
AMF_UE_CLEAR_N2_TRANSFER(amf_ue, pdu_session_resource_setup_request);
/* Clear 5GSM Message */
AMF_UE_CLEAR_5GSM_MESSAGE(amf_ue);
/* Remove all session context */
amf_sess_remove_all(amf_ue);
if (amf_ue->current.m_tmsi) {
ogs_hash_set(self.guti_ue_hash,
&amf_ue->current.guti, sizeof(ogs_nas_5gs_guti_t), NULL);
ogs_assert(amf_m_tmsi_free(amf_ue->current.m_tmsi) == OGS_OK);
}
if (amf_ue->next.m_tmsi) {
ogs_assert(amf_m_tmsi_free(amf_ue->next.m_tmsi) == OGS_OK);
}
if (amf_ue->suci) {
ogs_hash_set(self.suci_hash, amf_ue->suci, strlen(amf_ue->suci), NULL);
ogs_free(amf_ue->suci);
}
if (amf_ue->supi) {
ogs_hash_set(self.supi_hash, amf_ue->supi, strlen(amf_ue->supi), NULL);
ogs_free(amf_ue->supi);
}
if (amf_ue->pei)
ogs_free(amf_ue->pei);
for (i = 0; i < amf_ue->num_of_msisdn; i++) {
ogs_assert(amf_ue->msisdn[i]);
ogs_free(amf_ue->msisdn[i]);
}
/* Clear SubscribedInfo */
amf_clear_subscribed_info(amf_ue);
if (amf_ue->policy_association_id)
ogs_free(amf_ue->policy_association_id);
if (amf_ue->confirmation_url_for_5g_aka)
ogs_free(amf_ue->confirmation_url_for_5g_aka);
/* Free UeRadioCapability */
OGS_ASN_CLEAR_DATA(&amf_ue->ueRadioCapability);
/* Clear Transparent Container */
OGS_ASN_CLEAR_DATA(&amf_ue->handover.container);
/* Delete All Timers */
CLEAR_AMF_UE_ALL_TIMERS(amf_ue);
ogs_timer_delete(amf_ue->t3513.timer);
ogs_timer_delete(amf_ue->t3522.timer);
ogs_timer_delete(amf_ue->t3550.timer);
ogs_timer_delete(amf_ue->t3555.timer);
ogs_timer_delete(amf_ue->t3560.timer);
ogs_timer_delete(amf_ue->t3570.timer);
/* Free SBI object memory */
ogs_sbi_object_free(&amf_ue->sbi);
amf_ue_deassociate(amf_ue);
ogs_pool_free(&amf_ue_pool, amf_ue);
ogs_info("[Removed] Number of AMF-UEs is now %d",
ogs_list_count(&self.amf_ue_list));
}
void amf_ue_remove_all()
{
amf_ue_t *amf_ue = NULL, *next = NULL;;
ogs_list_for_each_safe(&self.amf_ue_list, next, amf_ue) {
ran_ue_t *ran_ue = ran_ue_cycle(amf_ue->ran_ue);
if (ran_ue) ran_ue_remove(ran_ue);
amf_ue_remove(amf_ue);
}
}
void amf_ue_fsm_init(amf_ue_t *amf_ue)
{
amf_event_t e;
ogs_assert(amf_ue);
memset(&e, 0, sizeof(e));
e.amf_ue = amf_ue;
ogs_fsm_init(&amf_ue->sm, gmm_state_initial, gmm_state_final, &e);
}
void amf_ue_fsm_fini(amf_ue_t *amf_ue)
{
amf_event_t e;
ogs_assert(amf_ue);
memset(&e, 0, sizeof(e));
e.amf_ue = amf_ue;
ogs_fsm_fini(&amf_ue->sm, &e);
}
amf_ue_t *amf_ue_find_by_guti(ogs_nas_5gs_guti_t *guti)
{
ogs_assert(guti);
return (amf_ue_t *)ogs_hash_get(
self.guti_ue_hash, guti, sizeof(ogs_nas_5gs_guti_t));
}
amf_ue_t *amf_ue_find_by_teid(uint32_t teid)
{
return ogs_pool_find(&amf_ue_pool, teid);
}
amf_ue_t *amf_ue_find_by_suci(char *suci)
{
ogs_assert(suci);
return (amf_ue_t *)ogs_hash_get(self.suci_hash, suci, strlen(suci));
}
amf_ue_t *amf_ue_find_by_supi(char *supi)
{
ogs_assert(supi);
return (amf_ue_t *)ogs_hash_get(self.supi_hash, supi, strlen(supi));
}
amf_ue_t *amf_ue_find_by_message(ogs_nas_5gs_message_t *message)
{
amf_ue_t *amf_ue = NULL;
ogs_nas_5gs_registration_request_t *registration_request = NULL;
ogs_nas_5gs_deregistration_request_from_ue_t *deregistration_request = NULL;
ogs_nas_5gs_service_request_t *service_request = NULL;
ogs_nas_5gs_mobile_identity_t *mobile_identity = NULL;
ogs_nas_5gs_mobile_identity_header_t *mobile_identity_header = NULL;
ogs_nas_5gs_mobile_identity_suci_t *mobile_identity_suci = NULL;
ogs_nas_5gs_mobile_identity_guti_t *mobile_identity_guti = NULL;
ogs_nas_5gs_mobile_identity_s_tmsi_t *mobile_identity_s_tmsi = NULL;
ogs_nas_5gs_guti_t nas_guti;
char *suci = NULL;
ogs_assert(message);
memset(&nas_guti, 0, sizeof(ogs_nas_5gs_guti_t));
switch (message->gmm.h.message_type) {
case OGS_NAS_5GS_REGISTRATION_REQUEST:
registration_request = &message->gmm.registration_request;
ogs_assert(registration_request);
mobile_identity = &registration_request->mobile_identity;
ogs_assert(mobile_identity);
if (!mobile_identity->length || !mobile_identity->buffer) {
ogs_error("No Mobilie Identity [%d]", mobile_identity->length);
return NULL;
}
mobile_identity_header =
(ogs_nas_5gs_mobile_identity_header_t *)mobile_identity->buffer;
switch (mobile_identity_header->type) {
case OGS_NAS_5GS_MOBILE_IDENTITY_SUCI:
mobile_identity_suci =
(ogs_nas_5gs_mobile_identity_suci_t *)mobile_identity->buffer;
if (mobile_identity_suci->protection_scheme_id !=
OGS_NAS_5GS_NULL_SCHEME &&
mobile_identity_suci->protection_scheme_id !=
OGS_NAS_5GS_ECIES_SCHEME_PROFILE_A &&
mobile_identity_suci->protection_scheme_id !=
OGS_NAS_5GS_ECIES_SCHEME_PROFILE_B) {
ogs_error("Invalid ProtectionSchemeID(%d) in SUCI",
mobile_identity_suci->protection_scheme_id);
return NULL;
}
suci = ogs_nas_5gs_suci_from_mobile_identity(mobile_identity);
ogs_assert(suci);
amf_ue = amf_ue_find_by_suci(suci);
if (amf_ue) {
ogs_info("[%s] known UE by SUCI", suci);
} else {
ogs_info("[%s] Unknown UE by SUCI", suci);
}
ogs_free(suci);
break;
case OGS_NAS_5GS_MOBILE_IDENTITY_GUTI:
mobile_identity_guti =
(ogs_nas_5gs_mobile_identity_guti_t *)mobile_identity->buffer;
ogs_assert(mobile_identity_guti);
ogs_nas_5gs_mobile_identity_guti_to_nas_guti(
mobile_identity_guti, &nas_guti);
amf_ue = amf_ue_find_by_guti(&nas_guti);
if (amf_ue) {
ogs_info("[%s] Known UE by 5G-S_TMSI[AMF_ID:0x%x,M_TMSI:0x%x]",
amf_ue->suci ? amf_ue->suci : "Unknown",
ogs_amf_id_hexdump(&nas_guti.amf_id), nas_guti.m_tmsi);
} else {
ogs_info("Unknown UE by 5G-S_TMSI[AMF_ID:0x%x,M_TMSI:0x%x]",
ogs_amf_id_hexdump(&nas_guti.amf_id), nas_guti.m_tmsi);
}
break;
default:
ogs_error("Unknown Mobile Identity type [%d]",
mobile_identity_header->type);
}
break;
case OGS_NAS_5GS_SERVICE_REQUEST:
service_request = &message->gmm.service_request;
ogs_assert(service_request);
mobile_identity = &service_request->s_tmsi;
ogs_assert(mobile_identity);
if (!mobile_identity->length || !mobile_identity->buffer) {
ogs_error("No Mobilie Identity [%d]", mobile_identity->length);
return NULL;
}
mobile_identity_header =
(ogs_nas_5gs_mobile_identity_header_t *)mobile_identity->buffer;
switch (mobile_identity_header->type) {
case OGS_NAS_5GS_MOBILE_IDENTITY_S_TMSI:
mobile_identity_s_tmsi =
(ogs_nas_5gs_mobile_identity_s_tmsi_t *)mobile_identity->buffer;
ogs_assert(mobile_identity_s_tmsi);
/* Use the first configured plmn_id and mme group id */
ogs_nas_from_plmn_id(&nas_guti.nas_plmn_id,
&amf_self()->served_guami[0].plmn_id);
nas_guti.amf_id.region = amf_self()->served_guami[0].amf_id.region;
/* Getting from S_TMSI */
nas_guti.amf_id.set1 = mobile_identity_s_tmsi->set1;
nas_guti.amf_id.set2 = mobile_identity_s_tmsi->set2;
nas_guti.amf_id.pointer = mobile_identity_s_tmsi->pointer;
nas_guti.m_tmsi = be32toh(mobile_identity_s_tmsi->m_tmsi);
amf_ue = amf_ue_find_by_guti(&nas_guti);
if (amf_ue) {
ogs_info("[%s] Known UE by 5G-S_TMSI[AMF_ID:0x%x,M_TMSI:0x%x]",
amf_ue->suci ? amf_ue->suci : "Unknown",
ogs_amf_id_hexdump(&nas_guti.amf_id), nas_guti.m_tmsi);
} else {
ogs_info("Unknown UE by 5G-S_TMSI[AMF_ID:0x%x,M_TMSI:0x%x]",
ogs_amf_id_hexdump(&nas_guti.amf_id), nas_guti.m_tmsi);
}
break;
default:
ogs_error("Unknown Mobile Identity type [%d]",
mobile_identity_header->type);
}
break;
case OGS_NAS_5GS_DEREGISTRATION_REQUEST_FROM_UE:
deregistration_request = &message->gmm.deregistration_request_from_ue;
ogs_assert(deregistration_request);
mobile_identity = &deregistration_request->mobile_identity;
ogs_assert(mobile_identity);
if (!mobile_identity->length || !mobile_identity->buffer) {
ogs_error("No Mobilie Identity [%d]", mobile_identity->length);
return NULL;
}
mobile_identity_header =
(ogs_nas_5gs_mobile_identity_header_t *)mobile_identity->buffer;
switch (mobile_identity_header->type) {
case OGS_NAS_5GS_MOBILE_IDENTITY_GUTI:
mobile_identity_guti =
(ogs_nas_5gs_mobile_identity_guti_t *)mobile_identity->buffer;
ogs_assert(mobile_identity_guti);
ogs_nas_5gs_mobile_identity_guti_to_nas_guti(
mobile_identity_guti, &nas_guti);
amf_ue = amf_ue_find_by_guti(&nas_guti);
if (amf_ue) {
ogs_info("[%s] Known UE by 5G-S_TMSI[AMF_ID:0x%x,M_TMSI:0x%x]",
amf_ue->suci ? amf_ue->suci : "Unknown",
ogs_amf_id_hexdump(&nas_guti.amf_id), nas_guti.m_tmsi);
} else {
ogs_info("Unknown UE by 5G-S_TMSI[AMF_ID:0x%x,M_TMSI:0x%x]",
ogs_amf_id_hexdump(&nas_guti.amf_id), nas_guti.m_tmsi);
}
break;
default:
ogs_error("Unknown Mobile Identity type [%d]",
mobile_identity_header->type);
}
break;
default:
break;
}
return amf_ue;
}
void amf_ue_set_suci(amf_ue_t *amf_ue,
ogs_nas_5gs_mobile_identity_t *mobile_identity)
{
amf_ue_t *old_amf_ue = NULL;
amf_sess_t *old_sess = NULL;
char *suci = NULL;
ogs_assert(amf_ue);
ogs_assert(mobile_identity);
suci = ogs_nas_5gs_suci_from_mobile_identity(mobile_identity);
ogs_assert(suci);
/* Check if OLD amf_ue_t is existed */
old_amf_ue = amf_ue_find_by_suci(suci);
if (old_amf_ue) {
/* Check if OLD amf_ue_t is different with NEW amf_ue_t */
if (ogs_pool_index(&amf_ue_pool, amf_ue) !=
ogs_pool_index(&amf_ue_pool, old_amf_ue)) {
ogs_warn("[%s] OLD UE Context Release", suci);
if (CM_CONNECTED(old_amf_ue)) {
/* Implcit NG release */
ogs_info("[%s] Implicit NG release", suci);
ogs_info("[%s] RAN_UE_NGAP_ID[%d] AMF_UE_NGAP_ID[%lld]",
old_amf_ue->suci, old_amf_ue->ran_ue->ran_ue_ngap_id,
(long long)old_amf_ue->ran_ue->amf_ue_ngap_id);
ran_ue_remove(old_amf_ue->ran_ue);
}
/*
* We should delete the AMF-Session Context in the AMF-UE Context.
* Otherwise, all unnecessary SESSIONs remain in SMF/UPF.
*
* In order to do this, AMF-Session Context should be moved
* from OLD AMF-UE Context to NEW AMF-UE Context.
*
* If needed, The Session deletion process in NEW-AMF UE context will work.
*
* Note that we should not send Session-Release to the SMF at this point.
* Another SBI Transaction can cause fatal errors.
*/
/* Phase-1 : Change AMF-UE Context in Session Context */
ogs_list_for_each(&old_amf_ue->sess_list, old_sess)
old_sess->amf_ue = amf_ue;
/* Phase-2 : Move Session Context from OLD to NEW AMF-UE Context */
memcpy(&amf_ue->sess_list,
&old_amf_ue->sess_list, sizeof(amf_ue->sess_list));
/* Phase-3 : Clear Session Context in OLD AMF-UE Context */
memset(&old_amf_ue->sess_list, 0, sizeof(old_amf_ue->sess_list));
amf_ue_remove(old_amf_ue);
}
}
if (amf_ue->suci) {
ogs_hash_set(self.suci_hash, amf_ue->suci, strlen(amf_ue->suci), NULL);
ogs_free(amf_ue->suci);
}
amf_ue->suci = suci;
ogs_hash_set(self.suci_hash, amf_ue->suci, strlen(amf_ue->suci), amf_ue);
}
void amf_ue_set_supi(amf_ue_t *amf_ue, char *supi)
{
ogs_assert(supi);
if (amf_ue->supi) {
ogs_hash_set(self.supi_hash, amf_ue->supi, strlen(amf_ue->supi), NULL);
ogs_free(amf_ue->supi);
}
amf_ue->supi = ogs_strdup(supi);
ogs_assert(amf_ue->supi);
ogs_hash_set(self.supi_hash, amf_ue->supi, strlen(amf_ue->supi), amf_ue);
}
OpenAPI_rat_type_e amf_ue_rat_type(amf_ue_t *amf_ue)
{
amf_gnb_t *gnb = NULL;
ran_ue_t *ran_ue = NULL;
ran_ue = amf_ue->ran_ue;
ogs_assert(ran_ue);
gnb = ran_ue->gnb;
ogs_assert(gnb);
return gnb->rat_type;
}
void amf_ue_associate_ran_ue(amf_ue_t *amf_ue, ran_ue_t *ran_ue)
{
ogs_assert(amf_ue);
ogs_assert(ran_ue);
amf_ue->ran_ue = ran_ue;
ran_ue->amf_ue = amf_ue;
}
void ran_ue_deassociate(ran_ue_t *ran_ue)
{
ogs_assert(ran_ue);
ran_ue->amf_ue = NULL;
}
void amf_ue_deassociate(amf_ue_t *amf_ue)
{
ogs_assert(amf_ue);
amf_ue->ran_ue = NULL;
}
void source_ue_associate_target_ue(
ran_ue_t *source_ue, ran_ue_t *target_ue)
{
amf_ue_t *amf_ue = NULL;
ogs_assert(source_ue);
ogs_assert(target_ue);
amf_ue = source_ue->amf_ue;
ogs_assert(amf_ue);
target_ue->amf_ue = amf_ue;
target_ue->source_ue = source_ue;
source_ue->target_ue = target_ue;
}
void source_ue_deassociate_target_ue(ran_ue_t *ran_ue)
{
ran_ue_t *source_ue = NULL;
ran_ue_t *target_ue = NULL;
ogs_assert(ran_ue);
if (ran_ue->target_ue) {
source_ue = ran_ue;
target_ue = ran_ue->target_ue;
ogs_assert(source_ue->target_ue);
ogs_assert(target_ue->source_ue);
source_ue->target_ue = NULL;
target_ue->source_ue = NULL;
} else if (ran_ue->source_ue) {
target_ue = ran_ue;
source_ue = ran_ue->source_ue;
ogs_assert(source_ue->target_ue);
ogs_assert(target_ue->source_ue);
source_ue->target_ue = NULL;
target_ue->source_ue = NULL;
}
}
amf_sess_t *amf_sess_add(amf_ue_t *amf_ue, uint8_t psi)
{
amf_sess_t *sess = NULL;
ogs_assert(amf_ue);
ogs_assert(psi != OGS_NAS_PDU_SESSION_IDENTITY_UNASSIGNED);
ogs_pool_alloc(&amf_sess_pool, &sess);
ogs_assert(sess);
memset(sess, 0, sizeof *sess);
sess->sbi.type = OGS_SBI_OBJ_SESS_TYPE;
sess->amf_ue = amf_ue;
sess->psi = psi;
sess->s_nssai.sst = 0;
sess->s_nssai.sd.v = OGS_S_NSSAI_NO_SD_VALUE;
sess->mapped_hplmn.sst = 0;
sess->mapped_hplmn.sd.v = OGS_S_NSSAI_NO_SD_VALUE;
ogs_list_add(&amf_ue->sess_list, sess);
stats_add_amf_session();
return sess;
}
void amf_sess_remove(amf_sess_t *sess)
{
ogs_assert(sess);
ogs_assert(sess->amf_ue);
ogs_list_remove(&sess->amf_ue->sess_list, sess);
/* Free SBI object memory */
ogs_sbi_object_free(&sess->sbi);
if (sess->sm_context_ref)
ogs_free(sess->sm_context_ref);
if (sess->payload_container)
ogs_pkbuf_free(sess->payload_container);
if (sess->dnn)
ogs_free(sess->dnn);
if (sess->pdu_session_establishment_accept)
ogs_pkbuf_free(sess->pdu_session_establishment_accept);
AMF_SESS_CLEAR_N2_TRANSFER(sess, pdu_session_resource_setup_request);
AMF_SESS_CLEAR_N2_TRANSFER(sess, pdu_session_resource_modification_command);
AMF_SESS_CLEAR_N2_TRANSFER(sess, path_switch_request_ack);
AMF_SESS_CLEAR_N2_TRANSFER(sess, handover_request);
AMF_SESS_CLEAR_N2_TRANSFER(sess, handover_command);
if (sess->paging.client)
ogs_sbi_client_remove(sess->paging.client);
if (sess->nssf.nsi_id)
ogs_free(sess->nssf.nsi_id);
if (sess->nssf.nrf.id)
ogs_free(sess->nssf.nrf.id);
if (sess->nssf.nrf.client)
ogs_sbi_client_remove(sess->nssf.nrf.client);
OGS_NAS_CLEAR_DATA(&sess->ue_pco);
OGS_TLV_CLEAR_DATA(&sess->pgw_pco);
ogs_pool_free(&amf_sess_pool, sess);
stats_remove_amf_session();
}
void amf_sess_remove_all(amf_ue_t *amf_ue)
{
amf_sess_t *sess = NULL, *next_sess = NULL;
ogs_assert(amf_ue);
ogs_list_for_each_safe(&amf_ue->sess_list, next_sess, sess)
amf_sess_remove(sess);
}
amf_sess_t *amf_sess_find_by_psi(amf_ue_t *amf_ue, uint8_t psi)
{
amf_sess_t *sess = NULL;
ogs_list_for_each(&amf_ue->sess_list, sess)
if (psi == sess->psi) return sess;
return NULL;
}
amf_ue_t *amf_ue_cycle(amf_ue_t *amf_ue)
{
return ogs_pool_cycle(&amf_ue_pool, amf_ue);
}
amf_sess_t *amf_sess_cycle(amf_sess_t *sess)
{
return ogs_pool_cycle(&amf_sess_pool, sess);
}
static bool check_smf_info(ogs_sbi_nf_info_t *nf_info, void *context);
void amf_sbi_select_nf(
ogs_sbi_object_t *sbi_object,
ogs_sbi_service_type_e service_type,
ogs_sbi_discovery_option_t *discovery_option)
{
OpenAPI_nf_type_e target_nf_type = OpenAPI_nf_type_NULL;
ogs_sbi_nf_instance_t *nf_instance = NULL;
ogs_sbi_nf_info_t *nf_info = NULL;
amf_sess_t *sess = NULL;
ogs_assert(sbi_object);
ogs_assert(service_type);
target_nf_type = ogs_sbi_service_type_to_nf_type(service_type);
ogs_assert(target_nf_type);
switch(sbi_object->type) {
case OGS_SBI_OBJ_UE_TYPE:
nf_instance = ogs_sbi_nf_instance_find_by_discovery_param(
target_nf_type, discovery_option);
if (nf_instance)
OGS_SBI_SETUP_NF_INSTANCE(
sbi_object->service_type_array[service_type], nf_instance);
break;
case OGS_SBI_OBJ_SESS_TYPE:
sess = (amf_sess_t *)sbi_object;
ogs_assert(sess);
ogs_list_for_each(&ogs_sbi_self()->nf_instance_list, nf_instance) {
if (ogs_sbi_discovery_param_is_matched(
nf_instance, target_nf_type, discovery_option) == false)
continue;
nf_info = ogs_sbi_nf_info_find(
&nf_instance->nf_info_list, nf_instance->nf_type);
if (nf_info) {
if (nf_instance->nf_type == OpenAPI_nf_type_SMF &&
check_smf_info(nf_info, sess) == false)
continue;
}
OGS_SBI_SETUP_NF_INSTANCE(
sbi_object->service_type_array[service_type], nf_instance);
break;
}
break;
default:
ogs_fatal("(NF discover search result) Not implemented [%d]",
sbi_object->type);
ogs_assert_if_reached();
}
}
int amf_sess_xact_count(amf_ue_t *amf_ue)
{
amf_sess_t *sess = NULL;
int xact_count = 0;
ogs_assert(amf_ue);
ogs_list_for_each(&amf_ue->sess_list, sess)
xact_count += ogs_list_count(&sess->sbi.xact_list);
return xact_count;
}
int amf_sess_xact_state_count(amf_ue_t *amf_ue, int state)
{
amf_sess_t *sess = NULL;
ogs_sbi_xact_t *xact = NULL;
int xact_count = 0;
ogs_assert(amf_ue);
ogs_assert(state);
ogs_list_for_each(&amf_ue->sess_list, sess) {
ogs_list_for_each(&sess->sbi.xact_list, xact)
if (xact->state == state) xact_count++;
}
return xact_count;
}
bool amf_pdu_res_setup_req_transfer_needed(amf_ue_t *amf_ue)
{
amf_sess_t *sess = NULL;
ogs_assert(amf_ue);
ogs_list_for_each(&amf_ue->sess_list, sess)
if (sess->transfer.pdu_session_resource_setup_request)
return true;
return false;
}
bool amf_handover_request_transfer_needed(amf_ue_t *amf_ue)
{
amf_sess_t *sess = NULL;
ogs_assert(amf_ue);
ogs_list_for_each(&amf_ue->sess_list, sess)
if (sess->transfer.handover_request)
return true;
return false;
}
bool amf_paging_ongoing(amf_ue_t *amf_ue)
{
amf_sess_t *sess = NULL;
ogs_assert(amf_ue);
ogs_list_for_each(&amf_ue->sess_list, sess) {
if (sess->paging.ongoing == true)
return true;
}
return false;
}
bool amf_downlink_signalling_pending(amf_ue_t *amf_ue)
{
amf_sess_t *sess = NULL;
ogs_assert(amf_ue);
ogs_list_for_each(&amf_ue->sess_list, sess)
if (sess->gsm_message.type)
return true;
return false;
}
int amf_find_served_tai(ogs_5gs_tai_t *nr_tai)
{
int i = 0, j = 0, k = 0;
ogs_assert(nr_tai);
for (i = 0; i < self.num_of_served_tai; i++) {
ogs_5gs_tai0_list_t *list0 = &self.served_tai[i].list0;
ogs_assert(list0);
ogs_5gs_tai2_list_t *list2 = &self.served_tai[i].list2;
ogs_assert(list2);
for (j = 0; list0->tai[j].num; j++) {
ogs_assert(list0->tai[j].type == OGS_TAI0_TYPE);
ogs_assert(list0->tai[j].num < OGS_MAX_NUM_OF_TAI);
for (k = 0; k < list0->tai[j].num; k++) {
if (memcmp(&list0->tai[j].plmn_id,
&nr_tai->plmn_id, OGS_PLMN_ID_LEN) == 0 &&
list0->tai[j].tac[k].v == nr_tai->tac.v) {
return i;
}
}
}
if (list2->num) {
ogs_assert(list2->type == OGS_TAI1_TYPE ||
list2->type == OGS_TAI2_TYPE);
ogs_assert(list2->num < OGS_MAX_NUM_OF_TAI);
for (j = 0; j < list2->num; j++) {
if (memcmp(&list2->tai[j].plmn_id,
&nr_tai->plmn_id, OGS_PLMN_ID_LEN) == 0 &&
list2->tai[j].tac.v == nr_tai->tac.v) {
return i;
}
}
}
}
return -1;
}
ogs_s_nssai_t *amf_find_s_nssai(
ogs_plmn_id_t *served_plmn_id, ogs_s_nssai_t *s_nssai)
{
int i, j;
ogs_assert(served_plmn_id);
ogs_assert(s_nssai);
for (i = 0; i < amf_self()->num_of_plmn_support; i++) {
if (memcmp(&amf_self()->plmn_support[i].plmn_id,
served_plmn_id, OGS_PLMN_ID_LEN) != 0)
continue;
for (j = 0; j < amf_self()->plmn_support[i].num_of_s_nssai; j++) {
/* Compare S-NSSAI */
if (amf_self()->plmn_support[i].s_nssai[j].sst == s_nssai->sst &&
amf_self()->plmn_support[i].s_nssai[j].sd.v == s_nssai->sd.v) {
return &amf_self()->plmn_support[i].s_nssai[j];
}
}
}
return NULL;
}
int amf_m_tmsi_pool_generate()
{
int i, j;
int index = 0;
ogs_trace("M-TMSI Pool try to generate...");
for (i = 0; index < ogs_app()->max.ue; i++) {
amf_m_tmsi_t *m_tmsi = NULL;
int conflict = 0;
m_tmsi = &self.m_tmsi.array[index];
ogs_assert(m_tmsi);
*m_tmsi = ogs_random32();
/* for mapped-GUTI */
*m_tmsi |= 0xc0000000;
*m_tmsi &= 0xff00ffff;
for (j = 0; j < index; j++) {
if (*m_tmsi == self.m_tmsi.array[j]) {
conflict = 1;
ogs_trace("[M-TMSI CONFLICT] %d:0x%x == %d:0x%x",
index, *m_tmsi, j, self.m_tmsi.array[j]);
break;
}
}
if (conflict == 1) {
continue;
}
index++;
}
self.m_tmsi.size = index;
ogs_trace("M-TMSI Pool generate...done");
return OGS_OK;
}
amf_m_tmsi_t *amf_m_tmsi_alloc()
{
amf_m_tmsi_t *m_tmsi = NULL;
ogs_pool_alloc(&self.m_tmsi, &m_tmsi);
ogs_assert(m_tmsi);
return m_tmsi;
}
int amf_m_tmsi_free(amf_m_tmsi_t *m_tmsi)
{
ogs_assert(m_tmsi);
ogs_pool_free(&self.m_tmsi, m_tmsi);
return OGS_OK;
}
uint8_t amf_selected_int_algorithm(amf_ue_t *amf_ue)
{
int i;
ogs_assert(amf_ue);
for (i = 0; i < amf_self()->num_of_integrity_order; i++) {
if (amf_ue->ue_security_capability.nr_ia &
(0x80 >> amf_self()->integrity_order[i])) {
return amf_self()->integrity_order[i];
}
}
return 0;
}
uint8_t amf_selected_enc_algorithm(amf_ue_t *amf_ue)
{
int i;
ogs_assert(amf_ue);
for (i = 0; i < amf_self()->num_of_ciphering_order; i++) {
if (amf_ue->ue_security_capability.nr_ea &
(0x80 >> amf_self()->ciphering_order[i])) {
return amf_self()->ciphering_order[i];
}
}
return 0;
}
void amf_clear_subscribed_info(amf_ue_t *amf_ue)
{
int i, j;
ogs_assert(amf_ue);
ogs_assert(amf_ue->num_of_slice <= OGS_MAX_NUM_OF_SLICE);
for (i = 0; i < amf_ue->num_of_slice; i++) {
ogs_assert(amf_ue->slice[i].num_of_session <= OGS_MAX_NUM_OF_SESS);
for (j = 0; j < amf_ue->slice[i].num_of_session; j++) {
ogs_assert(amf_ue->slice[i].session[j].name);
ogs_free(amf_ue->slice[i].session[j].name);
}
amf_ue->slice[i].num_of_session = 0;
}
amf_ue->num_of_slice = 0;
}
static void stats_add_ran_ue(void)
{
amf_metrics_inst_global_inc(AMF_METR_GLOB_GAUGE_RAN_UE);
num_of_ran_ue = num_of_ran_ue + 1;
ogs_info("[Added] Number of gNB-UEs is now %d", num_of_ran_ue);
}
static void stats_remove_ran_ue(void)
{
amf_metrics_inst_global_dec(AMF_METR_GLOB_GAUGE_RAN_UE);
num_of_ran_ue = num_of_ran_ue - 1;
ogs_info("[Removed] Number of gNB-UEs is now %d", num_of_ran_ue);
}
static void stats_add_amf_session(void)
{
amf_metrics_inst_global_inc(AMF_METR_GLOB_GAUGE_AMF_SESS);
num_of_amf_sess = num_of_amf_sess + 1;
ogs_info("[Added] Number of AMF-Sessions is now %d", num_of_amf_sess);
}
static void stats_remove_amf_session(void)
{
amf_metrics_inst_global_dec(AMF_METR_GLOB_GAUGE_AMF_SESS);
num_of_amf_sess = num_of_amf_sess - 1;
ogs_info("[Removed] Number of AMF-Sessions is now %d", num_of_amf_sess);
}
static bool check_smf_info_s_nssai(
ogs_sbi_smf_info_t *smf_info, amf_sess_t *sess);
static bool check_smf_info_nr_tai(
ogs_sbi_smf_info_t *smf_info, amf_sess_t *sess);
static bool check_smf_info(ogs_sbi_nf_info_t *nf_info, void *context)
{
amf_sess_t *sess = NULL;
ogs_assert(nf_info);
ogs_assert(nf_info->nf_type == OpenAPI_nf_type_SMF);
sess = context;
ogs_assert(sess);
if (check_smf_info_s_nssai(&nf_info->smf, sess) == false)
return false;
if (check_smf_info_nr_tai(&nf_info->smf, sess) == false)
return false;
return true;
}
static bool check_smf_info_s_nssai(
ogs_sbi_smf_info_t *smf_info, amf_sess_t *sess)
{
int i, j;
ogs_assert(sess);
ogs_assert(sess->dnn);
ogs_assert(smf_info);
for (i = 0; i < smf_info->num_of_slice; i++) {
if (sess->s_nssai.sst == smf_info->slice[i].s_nssai.sst &&
sess->s_nssai.sd.v == smf_info->slice[i].s_nssai.sd.v) {
for (j = 0; j < smf_info->slice[i].num_of_dnn; j++) {
if (strcmp(sess->dnn, smf_info->slice[i].dnn[j]) == 0)
return true;
}
}
}
return false;
}
static bool check_smf_info_nr_tai(
ogs_sbi_smf_info_t *smf_info, amf_sess_t *sess)
{
amf_ue_t *amf_ue = NULL;
int i, j;
ogs_assert(sess);
amf_ue = sess->amf_ue;
ogs_assert(amf_ue);
ogs_assert(smf_info);
if (smf_info->num_of_nr_tai == 0 && smf_info->num_of_nr_tai_range == 0)
return true;
for (i = 0; i < smf_info->num_of_nr_tai; i++) {
if (memcmp(&amf_ue->nr_tai.plmn_id,
&smf_info->nr_tai[i].plmn_id, OGS_PLMN_ID_LEN) == 0) {
if (amf_ue->nr_tai.tac.v == smf_info->nr_tai[i].tac.v)
return true;
}
}
for (i = 0; i < smf_info->num_of_nr_tai_range; i++) {
if (memcmp(&amf_ue->nr_tai.plmn_id,
&smf_info->nr_tai_range[i].plmn_id, OGS_PLMN_ID_LEN) == 0) {
for (j = 0; j < smf_info->nr_tai_range[i].num_of_tac_range; j++) {
if (amf_ue->nr_tai.tac.v >=
smf_info->nr_tai_range[i].start[j].v &&
amf_ue->nr_tai.tac.v <=
smf_info->nr_tai_range[i].end[j].v) {
return true;
}
}
}
}
return false;
}
bool amf_update_allowed_nssai(amf_ue_t *amf_ue)
{
int i;
ogs_assert(amf_ue);
/*
* TS23.501
*
* 5.15.4 UE NSSAI configuration and NSSAI storage aspects
* 5.15.4.1 General
* 5.15.4.1.1 UE Network Slice configuration
*
* S-NSSAIs that the UE provides in the Requested NSSAI which are neither
* in the Allowed NSSAI nor provided as a rejected S-NSSAI, shall, by the
* UE, not be regarded as rejected, i.e. the UE may request to register
* these S-NSSAIs again next time the UE sends a Requested NSSAI
*
* 5.15.5 Detailed Operation Overview
*
* 5.15.5.2 Selection of a Serving AMF supporting the Network Slices
* 5.15.5.2.1 Registration to a set of Network Slices
*
* AMF checks whether it can serve all the S-NSSAI(s) from
* the Requested NSSAI present in the Subscribed S-NSSAIs
* (potentially using configuration for mapping S-NSSAI values
* between HPLMN and Serving PLMN), or all the S-NSSAI(s) marked
* as default in the Subscribed S-NSSAIs in the case that
* no Requested NSSAI was provided or none of the S-NSSAIs
* in the Requested NSSAI are permitted,
* i.e. do not match any of the Subscribed S-NSSAIs or not available
* at the current UE's Tracking Area (see clause 5.15.3).
*
*
* TS24.501
*
* 4.6.2 Mobility management aspects
* 4.6.2.1 General
*
* The UE in NB-N1 mode does not include the requested NSSAI during
* the registration procedure if the 5GS registration type IE indicates
* "mobility registration updating", procedure is not initiated
* to change the slice(s) that the UE is currently registered to,
* and the UE is still in the current registration area. The AMF does not
* include the allowed NSSAI during a registration procedure with the 5GS
* registration type IE indicating "mobility registration updating" except
* if the allowed NSSAI has changed for the UE. The UE considers
* the last received allowed NSSAI as valid until the UE receives
* a new allowed NSSAI.
*
* 5.5.1.2.4 Initial registration accepted by the network
*
* The AMF shall include the allowed NSSAI for the current PLMN
* and shall include the mapped S-NSSAI(s) for the allowed NSSAI
* contained in the requested NSSAI from the UE if available,
* in the REGISTRATION ACCEPT message if the UE included
* the requested NSSAI in the REGISTRATION REQUEST message
* and the AMF allows one or more S-NSSAIs in the requested NSSAI.
*
* 8.2.7.5 Allowed NSSAI
*
* This IE shall be included:
* a) if:
* 1) one or more S-NSSAIs in the requested NSSAI of
* the REGISTRATION REQUEST message are allowed by the AMF
* for a network not supporting NSSAA;
* 2) one or more S-NSSAIs in the requested NSSAI of
* the REGISTRATION REQUEST message are not subject
* to network slice-specific authentication and authorization
* and are allowed by the AMF; or
* 3) the network slice-specific authentication and authorization
* has been successfully performed for one or more S-NSSAIs in
* the requested NSSAI of the REGISTRATION REQUEST message; or
* b) if:
* 1) the requested NSSAI was not included in the REGISTRATION
* REQUEST message or none of the requested NSSAI are allowed;
* 2) the network not supporting NSSAA has one or more subscribed
* S-NSSAIs marked as default that are available; or
* 3) the network has one or more subscribed S-NSSAIs marked
* as default which are not subject to network slice-specific
* authentication and authorization that are available.
*/
amf_ue->allowed_nssai.num_of_s_nssai = 0;
amf_ue->rejected_nssai.num_of_s_nssai = 0;
if (amf_ue->requested_nssai.num_of_s_nssai) {
for (i = 0; i < amf_ue->requested_nssai.num_of_s_nssai; i++) {
ogs_slice_data_t *slice = NULL;
ogs_nas_s_nssai_ie_t *requested =
&amf_ue->requested_nssai.s_nssai[i];
ogs_nas_s_nssai_ie_t *allowed =
&amf_ue->allowed_nssai.
s_nssai[amf_ue->allowed_nssai.num_of_s_nssai];
ogs_nas_rejected_s_nssai_t *rejected =
&amf_ue->rejected_nssai.
s_nssai[amf_ue->rejected_nssai.num_of_s_nssai];
slice = ogs_slice_find_by_s_nssai(
amf_ue->slice, amf_ue->num_of_slice,
(ogs_s_nssai_t *)requested);
if (slice) {
allowed->sst = requested->sst;
allowed->sd.v = requested->sd.v;
allowed->mapped_hplmn_sst = requested->mapped_hplmn_sst;
allowed->mapped_hplmn_sd.v = requested->mapped_hplmn_sd.v;
amf_ue->allowed_nssai.num_of_s_nssai++;
} else {
rejected->sst = requested->sst;
rejected->sd.v = requested->sd.v;
if (rejected->sd.v != OGS_S_NSSAI_NO_SD_VALUE)
rejected->length_of_rejected_s_nssai = 4;
else
rejected->length_of_rejected_s_nssai = 1;
rejected->cause_value =
OGS_NAS_REJECTED_S_NSSAI_NOT_AVIALABLE_IN_PLMN;
amf_ue->rejected_nssai.num_of_s_nssai++;
}
}
}
if (!amf_ue->allowed_nssai.num_of_s_nssai) {
for (i = 0; i < amf_ue->num_of_slice; i++) {
ogs_slice_data_t *slice = &amf_ue->slice[i];
ogs_nas_s_nssai_ie_t *allowed =
&amf_ue->allowed_nssai.
s_nssai[amf_ue->allowed_nssai.num_of_s_nssai];
if (slice->default_indicator == true) {
allowed->sst = slice->s_nssai.sst;
allowed->sd.v = slice->s_nssai.sd.v;
allowed->mapped_hplmn_sst = 0;
allowed->mapped_hplmn_sd.v = OGS_S_NSSAI_NO_SD_VALUE;
amf_ue->allowed_nssai.num_of_s_nssai++;
}
}
}
if (!amf_ue->allowed_nssai.num_of_s_nssai) {
ogs_error("No Allowed-NSSAI");
ogs_error(" Number of Subscribed S-NSSAI [%d]",
amf_ue->num_of_slice);
for (i = 0; i < amf_ue->num_of_slice; i++) {
ogs_slice_data_t *slice = &amf_ue->slice[i];
if (slice->default_indicator == true) {
ogs_error(
" Default S_NSSAI[SST:%d SD:0x%x]",
slice->s_nssai.sst, slice->s_nssai.sd.v);
} else {
ogs_error(
" S_NSSAI[SST:%d SD:0x%x]",
slice->s_nssai.sst, slice->s_nssai.sd.v);
}
}
ogs_error(" Number of Requested NSSAI [%d]",
amf_ue->requested_nssai.num_of_s_nssai);
for (i = 0; i < amf_ue->requested_nssai.
num_of_s_nssai; i++) {
ogs_error(" PLMN_ID[MCC:%d MNC:%d]",
ogs_plmn_id_mcc(&amf_ue->nr_tai.plmn_id),
ogs_plmn_id_mnc(&amf_ue->nr_tai.plmn_id));
ogs_error(" S_NSSAI[SST:%d SD:0x%x]",
amf_ue->requested_nssai.s_nssai[i].sst,
amf_ue->requested_nssai.s_nssai[i].sd.v);
}
return false;
}
return true;
}
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