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open5gs/src/smf/gx-path.c

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/*
* Copyright (C) 2019 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 "fd-path.h"
static struct session_handler *smf_gx_reg = NULL;
static struct disp_hdl *hdl_gx_fb = NULL;
static struct disp_hdl *hdl_gx_rar = NULL;
struct sess_state {
os0_t gx_sid; /* Gx Session-Id */
os0_t peer_host; /* Peer Host */
#define MAX_CC_REQUEST_NUMBER 32
smf_sess_t *sess;
ogs_gtp_xact_t *xact[MAX_CC_REQUEST_NUMBER];
uint32_t cc_request_type;
uint32_t cc_request_number;
struct timespec ts; /* Time of sending the message */
};
static OGS_POOL(sess_state_pool, struct sess_state);
static ogs_thread_mutex_t sess_state_mutex;
static int decode_pcc_rule_definition(
ogs_pcc_rule_t *pcc_rule, struct avp *avpch1, int *perror);
static void smf_gx_cca_cb(void *data, struct msg **msg);
static __inline__ struct sess_state *new_state(os0_t sid)
{
struct sess_state *new = NULL;
ogs_thread_mutex_lock(&sess_state_mutex);
ogs_pool_alloc(&sess_state_pool, &new);
ogs_expect_or_return_val(new, NULL);
memset(new, 0, sizeof(*new));
ogs_thread_mutex_unlock(&sess_state_mutex);
new->gx_sid = (os0_t)ogs_strdup((char *)sid);
ogs_expect_or_return_val(new->gx_sid, NULL);
return new;
}
static void state_cleanup(struct sess_state *sess_data, os0_t sid, void *opaque)
{
if (sess_data->gx_sid)
ogs_free(sess_data->gx_sid);
if (sess_data->peer_host)
ogs_free(sess_data->peer_host);
ogs_thread_mutex_lock(&sess_state_mutex);
ogs_pool_free(&sess_state_pool, sess_data);
ogs_thread_mutex_unlock(&sess_state_mutex);
}
void smf_gx_send_ccr(smf_sess_t *sess, ogs_gtp_xact_t *xact,
uint32_t cc_request_type)
{
int ret;
smf_ue_t *smf_ue = NULL;
struct msg *req = NULL;
struct avp *avp;
struct avp *avpch1, *avpch2;
union avp_value val;
struct sess_state *sess_data = NULL, *svg;
struct session *session = NULL;
int new;
ogs_paa_t paa; /* For changing Framed-IPv6-Prefix Length to 64 */
char buf[OGS_PLMNIDSTRLEN];
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
uint32_t charging_id;
ogs_assert(sess);
ogs_assert(sess->ipv4 || sess->ipv6);
smf_ue = sess->smf_ue;
ogs_assert(smf_ue);
ogs_debug("[Credit-Control-Request]");
/* Create the request */
ret = fd_msg_new(ogs_diam_gx_cmd_ccr, MSGFL_ALLOC_ETEID, &req);
ogs_assert(ret == 0);
{
struct msg_hdr *h;
ret = fd_msg_hdr(req, &h);
ogs_assert(ret == 0);
h->msg_appl = OGS_DIAM_GX_APPLICATION_ID;
}
/* Find Diameter Gx Session */
if (sess->gx_sid) {
/* Retrieve session by Session-Id */
size_t sidlen = strlen(sess->gx_sid);
ret = fd_sess_fromsid_msg((os0_t)sess->gx_sid, sidlen, &session, &new);
ogs_assert(ret == 0);
ogs_assert(new == 0);
ogs_debug(" Found GX Session-Id: [%s]", sess->gx_sid);
/* Add Session-Id to the message */
ret = ogs_diam_message_session_id_set(req, (os0_t)sess->gx_sid, sidlen);
ogs_assert(ret == 0);
/* Save the session associated with the message */
ret = fd_msg_sess_set(req, session);
} else {
/* Create a new session */
#define OGS_DIAM_GX_APP_SID_OPT "app_gx"
ret = fd_msg_new_session(req, (os0_t)OGS_DIAM_GX_APP_SID_OPT,
CONSTSTRLEN(OGS_DIAM_GX_APP_SID_OPT));
ogs_assert(ret == 0);
ret = fd_msg_sess_get(fd_g_config->cnf_dict, req, &session, NULL);
ogs_assert(ret == 0);
ogs_debug(" Create a New Session");
}
/* Retrieve session state in this session */
ret = fd_sess_state_retrieve(smf_gx_reg, session, &sess_data);
if (!sess_data) {
os0_t sid;
size_t sidlen;
ret = fd_sess_getsid(session, &sid, &sidlen);
ogs_assert(ret == 0);
/* Allocate new session state memory */
sess_data = new_state(sid);
ogs_assert(sess_data);
ogs_debug(" Allocate new session: [%s]", sess_data->gx_sid);
/* Save Session-Id to SMF Session Context */
sess->gx_sid = (char *)sess_data->gx_sid;
} else
ogs_debug(" Retrieve session: [%s]", sess_data->gx_sid);
/*
* 8.2. CC-Request-Number AVP
*
* The CC-Request-Number AVP (AVP Code 415) is of type Unsigned32 and
* identifies this request within one session. As Session-Id AVPs are
* globally unique, the combination of Session-Id and CC-Request-Number
* AVPs is also globally unique and can be used in matching credit-
* control messages with confirmations. An easy way to produce unique
* numbers is to set the value to 0 for a credit-control request of type
* INITIAL_REQUEST and EVENT_REQUEST and to set the value to 1 for the
* first UPDATE_REQUEST, to 2 for the second, and so on until the value
* for TERMINATION_REQUEST is one more than for the last UPDATE_REQUEST.
*/
sess_data->cc_request_type = cc_request_type;
if (cc_request_type == OGS_DIAM_GX_CC_REQUEST_TYPE_INITIAL_REQUEST ||
cc_request_type == OGS_DIAM_GX_CC_REQUEST_TYPE_EVENT_REQUEST)
sess_data->cc_request_number = 0;
else
sess_data->cc_request_number++;
ogs_debug(" CC Request Type[%d] Number[%d]",
sess_data->cc_request_type, sess_data->cc_request_number);
ogs_assert(sess_data->cc_request_number <= MAX_CC_REQUEST_NUMBER);
/* Update session state */
sess_data->sess = sess;
sess_data->xact[sess_data->cc_request_number] = xact;
/* Set Origin-Host & Origin-Realm */
ret = fd_msg_add_origin(req, 0);
ogs_assert(ret == 0);
/* Set the Destination-Realm AVP */
ret = fd_msg_avp_new(ogs_diam_destination_realm, 0, &avp);
ogs_assert(ret == 0);
val.os.data = (unsigned char *)(fd_g_config->cnf_diamrlm);
val.os.len = strlen(fd_g_config->cnf_diamrlm);
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* Set the Auth-Application-Id AVP */
ret = fd_msg_avp_new(ogs_diam_auth_application_id, 0, &avp);
ogs_assert(ret == 0);
val.i32 = OGS_DIAM_GX_APPLICATION_ID;
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* Set CC-Request-Type, CC-Request-Number */
ret = fd_msg_avp_new(ogs_diam_gx_cc_request_type, 0, &avp);
ogs_assert(ret == 0);
val.i32 = sess_data->cc_request_type;
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_gx_cc_request_number, 0, &avp);
ogs_assert(ret == 0);
val.i32 = sess_data->cc_request_number;
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* Set the Destination-Host AVP */
if (sess_data->peer_host) {
ret = fd_msg_avp_new(ogs_diam_destination_host, 0, &avp);
ogs_assert(ret == 0);
val.os.data = sess_data->peer_host;
val.os.len = strlen((char *)sess_data->peer_host);
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
}
/* Set Subscription-Id */
ret = fd_msg_avp_new(ogs_diam_subscription_id, 0, &avp);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_subscription_id_type, 0, &avpch1);
ogs_assert(ret == 0);
val.i32 = OGS_DIAM_SUBSCRIPTION_ID_TYPE_END_USER_IMSI;
ret = fd_msg_avp_setvalue (avpch1, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avp, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_subscription_id_data, 0, &avpch1);
ogs_assert(ret == 0);
val.os.data = (uint8_t *)smf_ue->imsi_bcd;
val.os.len = strlen(smf_ue->imsi_bcd);
ret = fd_msg_avp_setvalue (avpch1, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avp, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
if (cc_request_type != OGS_DIAM_GX_CC_REQUEST_TYPE_TERMINATION_REQUEST) {
/* Set Supported-Features */
ret = fd_msg_avp_new(ogs_diam_gx_supported_features, 0, &avp);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_vendor_id, 0, &avpch1);
ogs_assert(ret == 0);
val.i32 = OGS_3GPP_VENDOR_ID;
ret = fd_msg_avp_setvalue (avpch1, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avp, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_gx_feature_list_id, 0, &avpch1);
ogs_assert(ret == 0);
val.i32 = 1;
ret = fd_msg_avp_setvalue (avpch1, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avp, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_gx_feature_list, 0, &avpch1);
ogs_assert(ret == 0);
val.u32 = 0x0000000b;
ret = fd_msg_avp_setvalue (avpch1, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avp, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* Set Network-Request-Support */
ret = fd_msg_avp_new(ogs_diam_gx_network_request_support, 0, &avp);
ogs_assert(ret == 0);
val.i32 = 1;
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* Set Framed-IP-Address */
if (sess->ipv4) {
ret = fd_msg_avp_new(ogs_diam_gx_framed_ip_address, 0, &avp);
ogs_assert(ret == 0);
val.os.data = (uint8_t*)&sess->ipv4->addr;
val.os.len = OGS_IPV4_LEN;
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
}
/* Set Framed-IPv6-Prefix */
if (sess->ipv6) {
ret = fd_msg_avp_new(ogs_diam_gx_framed_ipv6_prefix, 0, &avp);
ogs_assert(ret == 0);
/* As per 3GPP TS 23.401 version 15.12.0, section 5.3.1.2.2
* The PDN GW allocates a globally unique /64
* IPv6 prefix via Router Advertisement to a given UE.
*
* After the UE has received the Router Advertisement message, it
* constructs a full IPv6 address via IPv6 Stateless Address
* autoconfiguration in accordance with RFC 4862 using the interface
* identifier assigned by PDN GW.
*
* For stateless address autoconfiguration however, the UE can
* choose any interface identifier to generate IPv6 addresses, other
* than link-local, without involving the network.
*
* And, from section 5.3.1.1, Both EPS network elements and UE shall
* support the following mechanisms:
*
* /64 IPv6 prefix allocation via IPv6 Stateless Address
* autoconfiguration according to RFC 4862 [18], if IPv6 is
* supported.
*/
memset(&paa, 0 , sizeof(paa));
memcpy(&paa.addr6, &sess->ipv6->addr,
OGS_IPV6_DEFAULT_PREFIX_LEN >> 3);
#define FRAMED_IPV6_PREFIX_LENGTH 64 /* from spec document */
paa.len = FRAMED_IPV6_PREFIX_LENGTH;
val.os.data = (uint8_t*)&paa;
/* Reserved (1 byte) + Prefix length (1 byte) +
* IPv6 Prefix (8 bytes)
*/
val.os.len = (OGS_IPV6_DEFAULT_PREFIX_LEN >> 3) + 2;
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
}
/* Set IP-Can-Type */
ret = fd_msg_avp_new(ogs_diam_gx_ip_can_type, 0, &avp);
ogs_assert(ret == 0);
switch (sess->gtp_rat_type) {
case OGS_GTP2_RAT_TYPE_UTRAN:
case OGS_GTP2_RAT_TYPE_GERAN:
case OGS_GTP2_RAT_TYPE_HSPA_EVOLUTION:
case OGS_GTP2_RAT_TYPE_EUTRAN:
val.i32 = OGS_DIAM_GX_IP_CAN_TYPE_3GPP_EPS;
break;
case OGS_GTP2_RAT_TYPE_WLAN:
val.i32 = OGS_DIAM_GX_IP_CAN_TYPE_NON_3GPP_EPS;
break;
default:
ogs_error("Unknown RAT Type [%d]", sess->gtp_rat_type);
ogs_assert_if_reached();
}
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* Set RAT-Type */
ret = fd_msg_avp_new(ogs_diam_rat_type, 0, &avp);
ogs_assert(ret == 0);
switch (sess->gtp_rat_type) {
case OGS_GTP2_RAT_TYPE_UTRAN:
val.i32 = OGS_DIAM_RAT_TYPE_UTRAN;
break;
case OGS_GTP2_RAT_TYPE_GERAN:
val.i32 = OGS_DIAM_RAT_TYPE_GERAN;
break;
case OGS_GTP2_RAT_TYPE_HSPA_EVOLUTION:
val.i32 = OGS_DIAM_RAT_TYPE_HSPA_EVOLUTION;
break;
case OGS_GTP2_RAT_TYPE_EUTRAN:
val.i32 = OGS_DIAM_RAT_TYPE_EUTRAN;
break;
case OGS_GTP2_RAT_TYPE_WLAN:
val.i32 = OGS_DIAM_RAT_TYPE_WLAN;
break;
default:
ogs_error("Unknown RAT Type [%d]", sess->gtp_rat_type);
ogs_assert_if_reached();
}
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* Set QoS-Information */
if (sess->session.ambr.downlink || sess->session.ambr.uplink) {
ret = fd_msg_avp_new(ogs_diam_gx_qos_information, 0, &avp);
ogs_assert(ret == 0);
if (sess->session.ambr.uplink) {
ret = fd_msg_avp_new(ogs_diam_gx_apn_aggregate_max_bitrate_ul,
0, &avpch1);
ogs_assert(ret == 0);
val.u32 = sess->session.ambr.uplink;
ret = fd_msg_avp_setvalue (avpch1, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avp, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
}
if (sess->session.ambr.downlink) {
ret = fd_msg_avp_new(
ogs_diam_gx_apn_aggregate_max_bitrate_dl, 0, &avpch1);
ogs_assert(ret == 0);
val.u32 = sess->session.ambr.downlink;
ret = fd_msg_avp_setvalue (avpch1, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avp, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
}
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
}
/* Set Default-EPS-Bearer-QoS */
ret = fd_msg_avp_new(ogs_diam_gx_default_eps_bearer_qos, 0, &avp);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_gx_qos_class_identifier, 0, &avpch1);
ogs_assert(ret == 0);
val.u32 = sess->session.qos.index;
ret = fd_msg_avp_setvalue (avpch1, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avp, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(
ogs_diam_gx_allocation_retention_priority, 0, &avpch1);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_gx_priority_level, 0, &avpch2);
ogs_assert(ret == 0);
val.u32 = sess->session.qos.arp.priority_level;
ret = fd_msg_avp_setvalue (avpch2, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avpch1, MSG_BRW_LAST_CHILD, avpch2);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_gx_pre_emption_capability, 0, &avpch2);
ogs_assert(ret == 0);
val.u32 = sess->session.qos.arp.pre_emption_capability;
ret = fd_msg_avp_setvalue (avpch2, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avpch1, MSG_BRW_LAST_CHILD, avpch2);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_gx_pre_emption_vulnerability, 0, &avpch2);
ogs_assert(ret == 0);
val.u32 = sess->session.qos.arp.pre_emption_vulnerability;
ret = fd_msg_avp_setvalue (avpch2, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avpch1, MSG_BRW_LAST_CHILD, avpch2);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avp, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* 3GPP-User-Location-Info, 3GPP TS 29.061 16.4.7.2 22 */
smf_fd_msg_avp_add_3gpp_uli(sess, avpch1);
/* Set 3GPP-MS-Timezone */
if (sess->gtp.ue_timezone.presence &&
sess->gtp.ue_timezone.len && sess->gtp.ue_timezone.data) {
ret = fd_msg_avp_new(ogs_diam_gx_3gpp_ms_timezone, 0, &avp);
ogs_assert(ret == 0);
val.os.data = sess->gtp.ue_timezone.data;
val.os.len = sess->gtp.ue_timezone.len;
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
}
/* Set 3GPP-SGSN-MCC-MNC */
ret = fd_msg_avp_new(ogs_diam_gx_3gpp_sgsn_mcc_mnc, 0, &avp);
ogs_assert(ret == 0);
val.os.data = (uint8_t *)ogs_plmn_id_to_string(&sess->plmn_id, buf);
val.os.len = strlen(buf);
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* Set AN-GW-Address - Upto 2 address */
if (sess->sgw_s5c_ip.ipv4) {
ret = fd_msg_avp_new(ogs_diam_gx_an_gw_address, 0, &avp);
ogs_assert(ret == 0);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = sess->sgw_s5c_ip.addr;
ret = fd_msg_avp_value_encode(&sin, avp);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
}
if (sess->sgw_s5c_ip.ipv6) {
ret = fd_msg_avp_new(ogs_diam_gx_an_gw_address, 0, &avp);
ogs_assert(ret == 0);
sin6.sin6_family = AF_INET6;
memcpy(sin6.sin6_addr.s6_addr,
sess->sgw_s5c_ip.addr6, OGS_IPV6_LEN);
ret = fd_msg_avp_value_encode(&sin6, avp);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
}
}
/* Set Called-Station-Id */
ret = fd_msg_avp_new(ogs_diam_gx_called_station_id, 0, &avp);
ogs_assert(ret == 0);
ogs_assert(sess->session.name);
val.os.data = (uint8_t*)sess->session.name;
val.os.len = strlen(sess->session.name);
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
if (cc_request_type != OGS_DIAM_GX_CC_REQUEST_TYPE_TERMINATION_REQUEST) {
/* Set Online to DISABLE */
ret = fd_msg_avp_new(ogs_diam_gx_online, 0, &avp);
ogs_assert(ret == 0);
val.u32 = OGS_DIAM_GX_DISABLE_ONLINE;
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* Set Offline to ENABLE */
ret = fd_msg_avp_new(ogs_diam_gx_offline, 0, &avp);
ogs_assert(ret == 0);
val.u32 = OGS_DIAM_GX_ENABLE_OFFLINE;
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* Set Access-Network-Charging-Address - Only 1 address */
if (ogs_gtp_self()->gtpc_addr) {
ret = fd_msg_avp_new(
ogs_diam_gx_access_network_charging_address, 0, &avp);
ogs_assert(ret == 0);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr =
ogs_gtp_self()->gtpc_addr->sin.sin_addr.s_addr;
ret = fd_msg_avp_value_encode(&sin, avp);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
} else if (ogs_gtp_self()->gtpc_addr6) {
ret = fd_msg_avp_new(
ogs_diam_gx_access_network_charging_address, 0, &avp);
ogs_assert(ret == 0);
sin6.sin6_family = AF_INET6;
memcpy(sin6.sin6_addr.s6_addr,
ogs_gtp_self()->gtpc_addr6->sin6.sin6_addr.s6_addr,
OGS_IPV6_LEN);
ret = fd_msg_avp_value_encode(&sin6, avp);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
}
/* Set Access-Network-Charging-Identitifer-Gx */
ret = fd_msg_avp_new(
ogs_diam_gx_access_network_charging_identifier_gx, 0, &avp);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(
ogs_diam_gx_access_network_charging_identifier_value, 0,
&avpch1);
ogs_assert(ret == 0);
charging_id = htobe32(sess->charging.id);
val.os.data = (uint8_t *)&charging_id;
val.os.len = sizeof(charging_id);
ret = fd_msg_avp_setvalue (avpch1, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add (avp, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_gx_an_trusted, 0, &avp);
ogs_assert(ret == 0);
val.u32 = OGS_DIAM_GX_AN_UNTRUSTED;
ret = fd_msg_avp_setvalue (avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
}
ret = clock_gettime(CLOCK_REALTIME, &sess_data->ts);
/* Keep a pointer to the session data for debug purpose,
* in real life we would not need it */
svg = sess_data;
/* Store this value in the session */
ret = fd_sess_state_store(smf_gx_reg, session, &sess_data);
ogs_assert(ret == 0);
ogs_assert(sess_data == NULL);
/* Send the request */
ret = fd_msg_send(&req, smf_gx_cca_cb, svg);
ogs_assert(ret == 0);
/* Increment the counter */
ogs_assert(pthread_mutex_lock(&ogs_diam_logger_self()->stats_lock) == 0);
ogs_diam_logger_self()->stats.nb_sent++;
ogs_assert(pthread_mutex_unlock(&ogs_diam_logger_self()->stats_lock) == 0);
}
static void smf_gx_cca_cb(void *data, struct msg **msg)
{
int rv;
int ret;
struct sess_state *sess_data = NULL;
struct timespec ts;
struct session *session;
struct avp *avp, *avpch1, *avpch2;
struct avp_hdr *hdr;
unsigned long dur;
int error = 0;
int new;
struct msg *req = NULL;
smf_event_t *e = NULL;
ogs_gtp_xact_t *xact = NULL;
smf_sess_t *sess = NULL;
ogs_diam_gx_message_t *gx_message = NULL;
uint32_t cc_request_number = 0;
ogs_debug("[Credit-Control-Answer]");
ret = clock_gettime(CLOCK_REALTIME, &ts);
ogs_assert(ret == 0);
/* Get originating request of received message, if any */
ret = fd_msg_answ_getq(*msg, &req);
ogs_assert(ret == 0);
/* Search the session, retrieve its data */
ret = fd_msg_sess_get(fd_g_config->cnf_dict, *msg, &session, &new);
ogs_assert(ret == 0);
ogs_assert(new == 0);
ogs_debug(" Search the session");
ret = fd_sess_state_retrieve(smf_gx_reg, session, &sess_data);
ogs_assert(ret == 0);
ogs_assert(sess_data);
ogs_assert((void *)sess_data == data);
ogs_debug(" Retrieve its data: [%s]", sess_data->gx_sid);
/* Value of CC-Request-Number */
ret = fd_msg_search_avp(*msg, ogs_diam_gx_cc_request_number, &avp);
ogs_assert(ret == 0);
if (!avp && req) {
/* Attempt searching for CC-Request-* in original request. Error
* messages (like DIAMETER_UNABLE_TO_DELIVER) crafted internally may not
* have them. */
ret = fd_msg_search_avp(req, ogs_diam_gx_cc_request_number, &avp);
ogs_assert(ret == 0);
}
if (!avp) {
ogs_error("no_CC-Request-Number");
ogs_assert_if_reached();
}
ret = fd_msg_avp_hdr(avp, &hdr);
ogs_assert(ret == 0);
cc_request_number = hdr->avp_value->i32;
ogs_debug(" CC-Request-Number[%d]", cc_request_number);
xact = sess_data->xact[cc_request_number];
sess = sess_data->sess;
ogs_assert(sess);
gx_message = ogs_calloc(1, sizeof(ogs_diam_gx_message_t));
ogs_assert(gx_message);
/* Set Credit Control Command */
gx_message->cmd_code = OGS_DIAM_GX_CMD_CODE_CREDIT_CONTROL;
/* Value of Result Code */
ret = fd_msg_search_avp(*msg, ogs_diam_result_code, &avp);
ogs_assert(ret == 0);
if (avp) {
ret = fd_msg_avp_hdr(avp, &hdr);
ogs_assert(ret == 0);
gx_message->result_code = hdr->avp_value->i32;
gx_message->err = &gx_message->result_code;
ogs_debug(" Result Code: %d", hdr->avp_value->i32);
} else {
ret = fd_msg_search_avp(*msg, ogs_diam_experimental_result, &avp);
ogs_assert(ret == 0);
if (avp) {
ret = fd_avp_search_avp(
avp, ogs_diam_experimental_result_code, &avpch1);
ogs_assert(ret == 0);
if (avpch1) {
ret = fd_msg_avp_hdr(avpch1, &hdr);
ogs_assert(ret == 0);
gx_message->result_code = hdr->avp_value->i32;
gx_message->exp_err = &gx_message->result_code;
ogs_debug(" Experimental Result Code: %d",
gx_message->result_code);
}
} else {
ogs_error("no Result-Code");
error++;
}
}
/* Value of Origin-Host */
ret = fd_msg_search_avp(*msg, ogs_diam_origin_host, &avp);
ogs_assert(ret == 0);
if (avp) {
ret = fd_msg_avp_hdr(avp, &hdr);
ogs_assert(ret == 0);
ogs_debug(" From '%.*s'",
(int)hdr->avp_value->os.len, hdr->avp_value->os.data);
} else {
ogs_error("no_Origin-Host");
error++;
}
/* Value of Origin-Realm */
ret = fd_msg_search_avp(*msg, ogs_diam_origin_realm, &avp);
ogs_assert(ret == 0);
if (avp) {
ret = fd_msg_avp_hdr(avp, &hdr);
ogs_assert(ret == 0);
ogs_debug(" ('%.*s')",
(int)hdr->avp_value->os.len, hdr->avp_value->os.data);
} else {
ogs_error("no_Origin-Realm");
error++;
}
/* Value of CC-Request-Type */
ret = fd_msg_search_avp(*msg, ogs_diam_gx_cc_request_type, &avp);
ogs_assert(ret == 0);
if (!avp && req) {
/* Attempt searching for CC-Request-* in original request. Error
* messages (like DIAMETER_UNABLE_TO_DELIVER) crafted internally may not
* have them. */
ret = fd_msg_search_avp(req, ogs_diam_gx_cc_request_type, &avp);
ogs_assert(ret == 0);
}
if (!avp) {
ogs_error("no_CC-Request-Number");
error++;
}
ret = fd_msg_avp_hdr(avp, &hdr);
ogs_assert(ret == 0);
gx_message->cc_request_type = hdr->avp_value->i32;
if (gx_message->result_code != ER_DIAMETER_SUCCESS) {
ogs_warn("ERROR DIAMETER Result Code(%d)", gx_message->result_code);
goto out;
}
ret = fd_msg_search_avp(*msg, ogs_diam_gx_qos_information, &avp);
ogs_assert(ret == 0);
if (avp) {
ret = fd_avp_search_avp(
avp, ogs_diam_gx_apn_aggregate_max_bitrate_ul, &avpch1);
ogs_assert(ret == 0);
if (avpch1) {
ret = fd_msg_avp_hdr(avpch1, &hdr);
ogs_assert(ret == 0);
gx_message->session_data.session.ambr.uplink = hdr->avp_value->u32;
}
ret = fd_avp_search_avp(
avp, ogs_diam_gx_apn_aggregate_max_bitrate_dl, &avpch1);
ogs_assert(ret == 0);
if (avpch1) {
ret = fd_msg_avp_hdr(avpch1, &hdr);
ogs_assert(ret == 0);
gx_message->session_data.session.ambr.downlink =
hdr->avp_value->u32;
}
}
ret = fd_msg_search_avp(*msg, ogs_diam_gx_default_eps_bearer_qos, &avp);
ogs_assert(ret == 0);
if (avp) {
ret = fd_avp_search_avp(avp, ogs_diam_gx_qos_class_identifier, &avpch1);
ogs_assert(ret == 0);
if (avpch1) {
ret = fd_msg_avp_hdr(avpch1, &hdr);
ogs_assert(ret == 0);
gx_message->session_data.session.qos.index = hdr->avp_value->u32;
}
ret = fd_avp_search_avp(
avp, ogs_diam_gx_allocation_retention_priority, &avpch1);
ogs_assert(ret == 0);
if (avpch1) {
ret = fd_avp_search_avp(
avpch1, ogs_diam_gx_priority_level, &avpch2);
ogs_assert(ret == 0);
if (avpch2) {
ret = fd_msg_avp_hdr(avpch2, &hdr);
ogs_assert(ret == 0);
gx_message->session_data.session.qos.arp.priority_level =
hdr->avp_value->u32;
}
/*
* Ch 7.3.40 Allocation-Retenion-Proirty in TS 29.272 V15.9.0
*
* If the Pre-emption-Capability AVP is not present in the
* Allocation-Retention-Priority AVP, the default value shall be
* PRE-EMPTION_CAPABILITY_DISABLED (1).
*
* If the Pre-emption-Vulnerability AVP is not present in the
* Allocation-Retention-Priority AVP, the default value shall be
* PRE-EMPTION_VULNERABILITY_ENABLED (0).
*
* However, to easily set up VoLTE service,
* enable Pre-emption Capability/Vulnerablility
* in Default Bearer
*/
ret = fd_avp_search_avp(
avpch1, ogs_diam_gx_pre_emption_capability, &avpch2);
ogs_assert(ret == 0);
if (avpch2) {
ret = fd_msg_avp_hdr(avpch2, &hdr);
ogs_assert(ret == 0);
gx_message->session_data.
session.qos.arp.pre_emption_capability =
hdr->avp_value->u32;
} else {
gx_message->session_data.
session.qos.arp.pre_emption_capability =
OGS_EPC_PRE_EMPTION_DISABLED;
}
ret = fd_avp_search_avp(avpch1,
ogs_diam_gx_pre_emption_vulnerability, &avpch2);
ogs_assert(ret == 0);
if (avpch2) {
ret = fd_msg_avp_hdr(avpch2, &hdr);
ogs_assert(ret == 0);
gx_message->session_data.
session.qos.arp.pre_emption_vulnerability =
hdr->avp_value->u32;
} else {
gx_message->session_data.
session.qos.arp.pre_emption_vulnerability =
OGS_EPC_PRE_EMPTION_ENABLED;
}
}
}
ret = fd_msg_browse(*msg, MSG_BRW_FIRST_CHILD, &avp, NULL);
ogs_assert(ret == 0);
while (avp) {
ret = fd_msg_avp_hdr(avp, &hdr);
ogs_assert(ret == 0);
switch (hdr->avp_code) {
case AC_SESSION_ID:
case AC_ORIGIN_HOST:
if (sess_data->peer_host)
ogs_free(sess_data->peer_host);
sess_data->peer_host =
(os0_t)ogs_strdup((char *)hdr->avp_value->os.data);
ogs_assert(sess_data->peer_host);
break;
case AC_ORIGIN_REALM:
case AC_DESTINATION_REALM:
case AC_RESULT_CODE:
case AC_ROUTE_RECORD:
case AC_PROXY_INFO:
case AC_AUTH_APPLICATION_ID:
break;
case OGS_DIAM_GX_AVP_CODE_CC_REQUEST_TYPE:
case OGS_DIAM_GX_AVP_CODE_CC_REQUEST_NUMBER:
case OGS_DIAM_GX_AVP_CODE_SUPPORTED_FEATURES:
break;
case OGS_DIAM_GX_AVP_CODE_QOS_INFORMATION:
case OGS_DIAM_GX_AVP_CODE_DEFAULT_EPS_BEARER_QOS:
break;
case OGS_DIAM_GX_AVP_CODE_CHARGING_RULE_INSTALL:
ret = fd_msg_browse(avp, MSG_BRW_FIRST_CHILD, &avpch1, NULL);
ogs_assert(ret == 0);
while (avpch1) {
ret = fd_msg_avp_hdr(avpch1, &hdr);
ogs_assert(ret == 0);
switch (hdr->avp_code) {
case OGS_DIAM_GX_AVP_CODE_CHARGING_RULE_DEFINITION:
if (gx_message->session_data.num_of_pcc_rule <
OGS_MAX_NUM_OF_PCC_RULE) {
ogs_pcc_rule_t *pcc_rule = NULL;
smf_bearer_t *bearer = NULL;
int num_of_flow = 0;
pcc_rule = &gx_message->session_data.pcc_rule
[gx_message->session_data.num_of_pcc_rule];
rv = decode_pcc_rule_definition(
pcc_rule, avpch1, &error);
ogs_assert(rv == OGS_OK);
num_of_flow = pcc_rule->num_of_flow;
bearer = smf_bearer_find_by_pcc_rule_name(
sess, pcc_rule->name);
if (bearer)
num_of_flow += ogs_list_count(&bearer->pf_list);
if (num_of_flow < OGS_MAX_NUM_OF_FLOW_IN_BEARER) {
pcc_rule->type = OGS_PCC_RULE_TYPE_INSTALL;
gx_message->session_data.num_of_pcc_rule++;
} else {
ogs_error("Overflow : Num Of Flow %d", num_of_flow);
OGS_PCC_RULE_FREE(pcc_rule);
error++;
}
} else {
ogs_error("Overflow: Number of PCCRule");
error++;
}
break;
default:
ogs_error("Not supported(%d)", hdr->avp_code);
break;
}
fd_msg_browse(avpch1, MSG_BRW_NEXT, &avpch1, NULL);
}
break;
default:
ogs_warn("Not supported(%d)", hdr->avp_code);
break;
}
fd_msg_browse(avp, MSG_BRW_NEXT, &avp, NULL);
}
out:
if (!error) {
e = smf_event_new(SMF_EVT_GX_MESSAGE);
ogs_assert(e);
e->sess = sess;
e->gx_message = gx_message;
e->gtp_xact = xact;
rv = ogs_queue_push(ogs_app()->queue, e);
if (rv != OGS_OK) {
ogs_warn("ogs_queue_push() failed:%d", (int)rv);
ogs_session_data_free(&gx_message->session_data);
ogs_free(gx_message);
smf_event_free(e);
} else {
ogs_pollset_notify(ogs_app()->pollset);
}
} else {
ogs_session_data_free(&gx_message->session_data);
ogs_free(gx_message);
}
/* Free the message */
ogs_assert(pthread_mutex_lock(&ogs_diam_logger_self()->stats_lock) == 0);
dur = ((ts.tv_sec - sess_data->ts.tv_sec) * 1000000) +
((ts.tv_nsec - sess_data->ts.tv_nsec) / 1000);
if (ogs_diam_logger_self()->stats.nb_recv) {
/* Ponderate in the avg */
ogs_diam_logger_self()->stats.avg = (ogs_diam_logger_self()->stats.avg *
ogs_diam_logger_self()->stats.nb_recv + dur) /
(ogs_diam_logger_self()->stats.nb_recv + 1);
/* Min, max */
if (dur < ogs_diam_logger_self()->stats.shortest)
ogs_diam_logger_self()->stats.shortest = dur;
if (dur > ogs_diam_logger_self()->stats.longest)
ogs_diam_logger_self()->stats.longest = dur;
} else {
ogs_diam_logger_self()->stats.shortest = dur;
ogs_diam_logger_self()->stats.longest = dur;
ogs_diam_logger_self()->stats.avg = dur;
}
if (error)
ogs_diam_logger_self()->stats.nb_errs++;
else
ogs_diam_logger_self()->stats.nb_recv++;
ogs_assert(pthread_mutex_unlock(&ogs_diam_logger_self()->stats_lock) == 0);
/* Display how long it took */
if (ts.tv_nsec > sess_data->ts.tv_nsec)
ogs_trace("in %d.%06ld sec",
(int)(ts.tv_sec - sess_data->ts.tv_sec),
(long)(ts.tv_nsec - sess_data->ts.tv_nsec) / 1000);
else
ogs_trace("in %d.%06ld sec",
(int)(ts.tv_sec + 1 - sess_data->ts.tv_sec),
(long)(1000000000 + ts.tv_nsec - sess_data->ts.tv_nsec) / 1000);
ogs_debug(" CC-Request-Type[%d] Number[%d] in Session Data",
sess_data->cc_request_type, sess_data->cc_request_number);
ogs_debug(" Current CC-Request-Number[%d]", cc_request_number);
if (sess_data->cc_request_type ==
OGS_DIAM_GX_CC_REQUEST_TYPE_TERMINATION_REQUEST &&
sess_data->cc_request_number <= cc_request_number) {
ogs_debug(" [LAST] state_cleanup(): [%s]", sess_data->gx_sid);
state_cleanup(sess_data, NULL, NULL);
} else {
ogs_debug(" fd_sess_state_store(): [%s]", sess_data->gx_sid);
ret = fd_sess_state_store(smf_gx_reg, session, &sess_data);
ogs_assert(ret == 0);
ogs_assert(sess_data == NULL);
}
ret = fd_msg_free(*msg);
ogs_assert(ret == 0);
*msg = NULL;
return;
}
static int smf_gx_fb_cb(struct msg **msg, struct avp *avp,
struct session *sess, void *opaque, enum disp_action *act)
{
/* This CB should never be called */
ogs_warn("Unexpected message received!");
return ENOTSUP;
}
static int smf_gx_rar_cb( struct msg **msg, struct avp *avp,
struct session *session, void *opaque, enum disp_action *act)
{
int rv;
int ret;
struct msg *ans, *qry;
struct avp *avpch1;
struct avp_hdr *hdr;
union avp_value val;
struct sess_state *sess_data = NULL;
smf_event_t *e = NULL;
smf_sess_t *sess = NULL;
ogs_diam_gx_message_t *gx_message = NULL;
uint32_t result_code = OGS_DIAM_UNKNOWN_SESSION_ID;
int error = 0;
ogs_assert(msg);
ogs_debug("Re-Auth-Request");
gx_message = ogs_calloc(1, sizeof(ogs_diam_gx_message_t));
ogs_assert(gx_message);
/* Set Credit Control Command */
gx_message->cmd_code = OGS_DIAM_GX_CMD_RE_AUTH;
/* Create answer header */
qry = *msg;
ret = fd_msg_new_answer_from_req(fd_g_config->cnf_dict, msg, 0);
ogs_assert(ret == 0);
ans = *msg;
ret = fd_sess_state_retrieve(smf_gx_reg, session, &sess_data);
ogs_assert(ret == 0);
if (!sess_data) {
ogs_error("No Session Data");
goto out;
}
/* Get Session Information */
sess = sess_data->sess;
ogs_assert(sess);
ret = fd_msg_browse(qry, MSG_BRW_FIRST_CHILD, &avp, NULL);
ogs_assert(ret == 0);
while (avp) {
ret = fd_msg_avp_hdr(avp, &hdr);
ogs_assert(ret == 0);
switch(hdr->avp_code) {
case AC_SESSION_ID:
case AC_ORIGIN_HOST:
case AC_ORIGIN_REALM:
case AC_DESTINATION_REALM:
case AC_DESTINATION_HOST:
case AC_ROUTE_RECORD:
case AC_PROXY_INFO:
case AC_AUTH_APPLICATION_ID:
break;
case OGS_DIAM_GX_AVP_CODE_RE_AUTH_REQUEST_TYPE:
break;
case OGS_DIAM_GX_AVP_CODE_CHARGING_RULE_INSTALL:
ret = fd_msg_browse(avp, MSG_BRW_FIRST_CHILD, &avpch1, NULL);
ogs_assert(ret == 0);
while(avpch1) {
ret = fd_msg_avp_hdr(avpch1, &hdr);
ogs_assert(ret == 0);
switch(hdr->avp_code) {
case OGS_DIAM_GX_AVP_CODE_CHARGING_RULE_DEFINITION:
if (gx_message->session_data.num_of_pcc_rule <
OGS_MAX_NUM_OF_PCC_RULE) {
ogs_pcc_rule_t *pcc_rule = NULL;
smf_bearer_t *bearer = NULL;
int num_of_flow = 0;
pcc_rule = &gx_message->session_data.pcc_rule
[gx_message->session_data.num_of_pcc_rule];
rv = decode_pcc_rule_definition(
pcc_rule, avpch1, &error);
ogs_assert(rv == OGS_OK);
if (error) {
ogs_error("decode_pcc_rule_definition() failed");
OGS_PCC_RULE_FREE(pcc_rule);
result_code = OGS_DIAM_GX_DIAMETER_PCC_RULE_EVENT;
goto out;
}
num_of_flow = pcc_rule->num_of_flow;
bearer = smf_bearer_find_by_pcc_rule_name(
sess, pcc_rule->name);
if (bearer)
num_of_flow += ogs_list_count(&bearer->pf_list);
if (num_of_flow < OGS_MAX_NUM_OF_FLOW_IN_BEARER) {
pcc_rule->type = OGS_PCC_RULE_TYPE_INSTALL;
gx_message->session_data.num_of_pcc_rule++;
} else {
ogs_error("Overflow : Num Of Flow %d", num_of_flow);
OGS_PCC_RULE_FREE(pcc_rule);
result_code = OGS_DIAM_GX_DIAMETER_PCC_RULE_EVENT;
goto out;
}
} else {
ogs_error("Overflow: Number of PCCRule");
}
break;
default:
ogs_error("Not supported(%d)", hdr->avp_code);
break;
}
fd_msg_browse(avpch1, MSG_BRW_NEXT, &avpch1, NULL);
}
break;
case OGS_DIAM_GX_AVP_CODE_CHARGING_RULE_REMOVE:
ret = fd_msg_browse(avp, MSG_BRW_FIRST_CHILD, &avpch1, NULL);
ogs_assert(ret == 0);
while (avpch1) {
ret = fd_msg_avp_hdr(avpch1, &hdr);
ogs_assert(ret == 0);
switch (hdr->avp_code) {
case OGS_DIAM_GX_AVP_CODE_CHARGING_RULE_NAME:
if (gx_message->session_data.num_of_pcc_rule <
OGS_MAX_NUM_OF_PCC_RULE) {
ogs_pcc_rule_t *pcc_rule =
&gx_message->session_data.pcc_rule
[gx_message->session_data.num_of_pcc_rule];
pcc_rule->name = ogs_strdup(
(char*)hdr->avp_value->os.data);
ogs_assert(pcc_rule->name);
pcc_rule->type = OGS_PCC_RULE_TYPE_REMOVE;
gx_message->session_data.num_of_pcc_rule++;
} else {
ogs_error("Overflow: Number of PCCRule");
}
break;
default:
ogs_error("Not supported(%d)", hdr->avp_code);
break;
}
fd_msg_browse(avpch1, MSG_BRW_NEXT, &avpch1, NULL);
}
break;
default:
ogs_warn("Not supported(%d)", hdr->avp_code);
break;
}
fd_msg_browse(avp, MSG_BRW_NEXT, &avp, NULL);
}
/* Send Gx Event to SMF State Machine */
e = smf_event_new(SMF_EVT_GX_MESSAGE);
ogs_assert(e);
e->sess = sess;
e->gx_message = gx_message;
rv = ogs_queue_push(ogs_app()->queue, e);
if (rv != OGS_OK) {
ogs_warn("ogs_queue_push() failed:%d", (int)rv);
ogs_session_data_free(&gx_message->session_data);
ogs_free(gx_message);
smf_event_free(e);
} else {
ogs_pollset_notify(ogs_app()->pollset);
}
/* Set the Auth-Application-Id AVP */
ret = fd_msg_avp_new(ogs_diam_auth_application_id, 0, &avp);
ogs_assert(ret == 0);
val.i32 = OGS_DIAM_GX_APPLICATION_ID;
ret = fd_msg_avp_setvalue(avp, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(ans, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
/* Set the Origin-Host, Origin-Realm, andResult-Code AVPs */
ret = fd_msg_rescode_set(ans, (char *)"DIAMETER_SUCCESS", NULL, NULL, 1);
ogs_assert(ret == 0);
/* Store this value in the session */
ret = fd_sess_state_store(smf_gx_reg, session, &sess_data);
ogs_assert(ret == 0);
ogs_assert(sess_data == NULL);
/* Send the answer */
ret = fd_msg_send(msg, NULL, NULL);
ogs_assert(ret == 0);
ogs_debug("Re-Auth-Answer");
/* Add this value to the stats */
ogs_assert(pthread_mutex_lock(&ogs_diam_logger_self()->stats_lock) == 0);
ogs_diam_logger_self()->stats.nb_echoed++;
ogs_assert(pthread_mutex_unlock(&ogs_diam_logger_self()->stats_lock) == 0);
return 0;
out:
if (result_code == OGS_DIAM_UNKNOWN_SESSION_ID) {
ret = fd_msg_rescode_set(ans,
(char *)"DIAMETER_UNKNOWN_SESSION_ID", NULL, NULL, 1);
ogs_assert(ret == 0);
} else {
ret = ogs_diam_message_experimental_rescode_set(ans, result_code);
ogs_assert(ret == 0);
}
/* Store this value in the session */
ret = fd_sess_state_store(smf_gx_reg, session, &sess_data);
ogs_assert(sess_data == NULL);
ret = fd_msg_send(msg, NULL, NULL);
ogs_assert(ret == 0);
ogs_session_data_free(&gx_message->session_data);
ogs_free(gx_message);
return 0;
}
int smf_gx_init(void)
{
int ret;
struct disp_when data;
ogs_thread_mutex_init(&sess_state_mutex);
ogs_pool_init(&sess_state_pool, ogs_app()->pool.sess);
/* Install objects definitions for this application */
ret = ogs_diam_gx_init();
ogs_assert(ret == 0);
/* Create handler for sessions */
ret = fd_sess_handler_create(&smf_gx_reg, state_cleanup, NULL, NULL);
ogs_assert(ret == 0);
memset(&data, 0, sizeof(data));
data.app = ogs_diam_gx_application;
ret = fd_disp_register(smf_gx_fb_cb, DISP_HOW_APPID, &data, NULL,
&hdl_gx_fb);
ogs_assert(ret == 0);
data.command = ogs_diam_gx_cmd_rar;
ret = fd_disp_register(smf_gx_rar_cb, DISP_HOW_CC, &data, NULL,
&hdl_gx_rar);
ogs_assert(ret == 0);
/* Advertise the support for the application in the peer */
ret = fd_disp_app_support(ogs_diam_gx_application, ogs_diam_vendor, 1, 0);
ogs_assert(ret == 0);
return OGS_OK;
}
void smf_gx_final(void)
{
int ret;
ret = fd_sess_handler_destroy(&smf_gx_reg, NULL);
ogs_assert(ret == 0);
if (hdl_gx_fb)
(void) fd_disp_unregister(&hdl_gx_fb, NULL);
if (hdl_gx_rar)
(void) fd_disp_unregister(&hdl_gx_rar, NULL);
ogs_pool_final(&sess_state_pool);
ogs_thread_mutex_destroy(&sess_state_mutex);
}
static int decode_pcc_rule_definition(
ogs_pcc_rule_t *pcc_rule, struct avp *avpch1, int *perror)
{
int ret = 0, error = 0;
struct avp *avpch2, *avpch3, *avpch4;
struct avp_hdr *hdr;
ogs_assert(pcc_rule);
ogs_assert(avpch1);
ret = fd_msg_browse(avpch1, MSG_BRW_FIRST_CHILD, &avpch2, NULL);
ogs_assert(ret == 0);
while (avpch2) {
ogs_flow_t *flow = NULL;
ret = fd_msg_avp_hdr(avpch2, &hdr);
ogs_assert(ret == 0);
switch (hdr->avp_code) {
case OGS_DIAM_GX_AVP_CODE_CHARGING_RULE_NAME:
if (pcc_rule->name) {
ogs_error("PCC Rule Name has already been defined");
ogs_free(pcc_rule->name);
}
pcc_rule->name = ogs_strdup((char*)hdr->avp_value->os.data);
ogs_assert(pcc_rule->name);
break;
case OGS_DIAM_GX_AVP_CODE_FLOW_INFORMATION:
if (pcc_rule->num_of_flow < OGS_MAX_NUM_OF_FLOW_IN_PCC_RULE) {
flow = &pcc_rule->flow[pcc_rule->num_of_flow];
ret = fd_avp_search_avp(
avpch2, ogs_diam_gx_flow_direction, &avpch3);
ogs_assert(ret == 0);
if (avpch3) {
ret = fd_msg_avp_hdr( avpch3, &hdr);
ogs_assert(ret == 0);
flow->direction = hdr->avp_value->i32;
}
ret = fd_avp_search_avp(
avpch2, ogs_diam_gx_flow_description, &avpch3);
ogs_assert(ret == 0);
if (avpch3) {
ret = fd_msg_avp_hdr(avpch3, &hdr);
ogs_assert(ret == 0);
flow->description = ogs_strndup(
(char*)hdr->avp_value->os.data, hdr->avp_value->os.len);
ogs_assert(flow->description);
}
pcc_rule->num_of_flow++;
} else {
ogs_error("Overflow: Num of Flow [%d]", pcc_rule->num_of_flow);
error++;
}
break;
case OGS_DIAM_GX_AVP_CODE_FLOW_STATUS:
pcc_rule->flow_status = hdr->avp_value->i32;
break;
case OGS_DIAM_GX_AVP_CODE_QOS_INFORMATION:
ret = fd_avp_search_avp(avpch2,
ogs_diam_gx_qos_class_identifier, &avpch3);
ogs_assert(ret == 0);
if (avpch3) {
ret = fd_msg_avp_hdr(avpch3, &hdr);
ogs_assert(ret == 0);
pcc_rule->qos.index = hdr->avp_value->u32;
} else {
ogs_error("no_QCI");
error++;
}
ret = fd_avp_search_avp(avpch2,
ogs_diam_gx_allocation_retention_priority, &avpch3);
ogs_assert(ret == 0);
if (avpch3) {
ret = fd_avp_search_avp(
avpch3, ogs_diam_gx_priority_level, &avpch4);
ogs_assert(ret == 0);
if (avpch4) {
ret = fd_msg_avp_hdr(avpch4, &hdr);
ogs_assert(ret == 0);
pcc_rule->qos.arp.priority_level = hdr->avp_value->u32;
} else {
ogs_error("no_Priority-Level");
error++;
}
/*
* Ch 7.3.40 Allocation-Retenion-Proirty in TS 29.272 V15.9.0
*
* If the Pre-emption-Capability AVP is not present in the
* Allocation-Retention-Priority AVP, the default value shall be
* PRE-EMPTION_CAPABILITY_DISABLED (1).
*
* If the Pre-emption-Vulnerability AVP is not present in the
* Allocation-Retention-Priority AVP, the default value shall be
* PRE-EMPTION_VULNERABILITY_ENABLED (0).
*
* However, to easily set up VoLTE service,
* enable Pre-emption Capability/Vulnerablility
* in Default Bearer
*/
ret = fd_avp_search_avp(avpch3,
ogs_diam_gx_pre_emption_capability, &avpch4);
ogs_assert(ret == 0);
if (avpch4) {
ret = fd_msg_avp_hdr(avpch4, &hdr);
ogs_assert(ret == 0);
pcc_rule->qos.arp.pre_emption_capability =
hdr->avp_value->u32;
} else {
pcc_rule->qos.arp.pre_emption_capability =
OGS_EPC_PRE_EMPTION_DISABLED;
}
ret = fd_avp_search_avp(avpch3,
ogs_diam_gx_pre_emption_vulnerability, &avpch4);
ogs_assert(ret == 0);
if (avpch4) {
ret = fd_msg_avp_hdr(avpch4, &hdr);
ogs_assert(ret == 0);
pcc_rule->qos.arp.pre_emption_vulnerability =
hdr->avp_value->u32;
} else {
pcc_rule->qos.arp.pre_emption_vulnerability =
OGS_EPC_PRE_EMPTION_ENABLED;
}
} else {
ogs_error("no_ARP");
error++;
}
ret = fd_avp_search_avp(avpch2,
ogs_diam_gx_max_requested_bandwidth_ul, &avpch3);
ogs_assert(ret == 0);
if (avpch3) {
ret = fd_msg_avp_hdr(avpch3, &hdr);
ogs_assert(ret == 0);
pcc_rule->qos.mbr.uplink = hdr->avp_value->u32;
}
ret = fd_avp_search_avp(avpch2,
ogs_diam_gx_max_requested_bandwidth_dl, &avpch3);
ogs_assert(ret == 0);
if (avpch3) {
ret = fd_msg_avp_hdr(avpch3, &hdr);
ogs_assert(ret == 0);
pcc_rule->qos.mbr.downlink = hdr->avp_value->u32;
}
ret = fd_avp_search_avp(avpch2,
ogs_diam_gx_guaranteed_bitrate_ul, &avpch3);
ogs_assert(ret == 0);
if (avpch3) {
ret = fd_msg_avp_hdr(avpch3, &hdr);
ogs_assert(ret == 0);
pcc_rule->qos.gbr.uplink = hdr->avp_value->u32;
}
ret = fd_avp_search_avp(avpch2,
ogs_diam_gx_guaranteed_bitrate_dl, &avpch3);
ogs_assert(ret == 0);
if (avpch3) {
ret = fd_msg_avp_hdr(avpch3, &hdr);
ogs_assert(ret == 0);
pcc_rule->qos.gbr.downlink = hdr->avp_value->u32;
}
break;
case OGS_DIAM_GX_AVP_CODE_PRECEDENCE:
pcc_rule->precedence = hdr->avp_value->i32;
break;
default:
ogs_error("Not implemented(%d)", hdr->avp_code);
break;
}
fd_msg_browse(avpch2, MSG_BRW_NEXT, &avpch2, NULL);
}
if (perror)
*perror = error;
return OGS_OK;
}
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