fix identation
This commit is contained in:
parent
eab4958a81
commit
3b26983db9
808
src/mme/mme-sm.c
808
src/mme/mme-sm.c
|
@ -1,3 +1,22 @@
|
|||
/*
|
||||
* 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 "asn1c/s1ap-message.h"
|
||||
#include "nas/nas-message.h"
|
||||
#include "gtp/gtp-xact.h"
|
||||
|
@ -40,504 +59,409 @@ void mme_state_operational(ogs_fsm_t *s, mme_event_t *e)
|
|||
int rv;
|
||||
char buf[OGS_ADDRSTRLEN];
|
||||
|
||||
ogs_sock_t *sock = NULL;
|
||||
ogs_sockaddr_t *addr = NULL;
|
||||
mme_enb_t *enb = NULL;
|
||||
uint16_t max_num_of_ostreams = 0;
|
||||
|
||||
s1ap_message_t s1ap_message;
|
||||
ogs_pkbuf_t *pkbuf = NULL;
|
||||
int rc;
|
||||
|
||||
nas_message_t nas_message;
|
||||
enb_ue_t *enb_ue = NULL;
|
||||
mme_ue_t *mme_ue = NULL;
|
||||
|
||||
mme_bearer_t *bearer = NULL;
|
||||
mme_bearer_t *default_bearer = NULL;
|
||||
mme_sess_t *sess = NULL;
|
||||
|
||||
ogs_pkbuf_t *s6abuf = NULL;
|
||||
s6a_message_t *s6a_message = NULL;
|
||||
|
||||
gtp_xact_t *xact = NULL;
|
||||
gtp_message_t gtp_message;
|
||||
|
||||
ogs_assert(e);
|
||||
mme_sm_debug(e);
|
||||
|
||||
ogs_assert(s);
|
||||
|
||||
switch (e->id)
|
||||
{
|
||||
case OGS_FSM_ENTRY_SIG:
|
||||
{
|
||||
rv = mme_gtp_open();
|
||||
if (rv != OGS_OK)
|
||||
{
|
||||
ogs_error("Can't establish S11-GTP path");
|
||||
break;
|
||||
}
|
||||
rv = sgsap_open();
|
||||
if (rv != OGS_OK)
|
||||
{
|
||||
ogs_error("Can't establish SGsAP path");
|
||||
break;
|
||||
}
|
||||
rv = s1ap_open();
|
||||
if (rv != OGS_OK)
|
||||
{
|
||||
ogs_error("Can't establish S1AP path");
|
||||
break;
|
||||
}
|
||||
|
||||
switch (e->id) {
|
||||
case OGS_FSM_ENTRY_SIG:
|
||||
rv = mme_gtp_open();
|
||||
if (rv != OGS_OK) {
|
||||
ogs_error("Can't establish S11-GTP path");
|
||||
break;
|
||||
}
|
||||
case OGS_FSM_EXIT_SIG:
|
||||
{
|
||||
mme_gtp_close();
|
||||
sgsap_close();
|
||||
s1ap_close();
|
||||
|
||||
rv = sgsap_open();
|
||||
if (rv != OGS_OK) {
|
||||
ogs_error("Can't establish SGsAP path");
|
||||
break;
|
||||
}
|
||||
case MME_EVT_S1AP_LO_ACCEPT:
|
||||
{
|
||||
ogs_sock_t *sock = NULL;
|
||||
ogs_sockaddr_t *addr = NULL;
|
||||
mme_enb_t *enb = NULL;
|
||||
|
||||
sock = e->enb_sock;
|
||||
ogs_assert(sock);
|
||||
addr = e->enb_addr;
|
||||
ogs_assert(addr);
|
||||
|
||||
ogs_info("eNB-S1 accepted[%s] in master_sm module",
|
||||
OGS_ADDR(addr, buf));
|
||||
|
||||
enb = mme_enb_find_by_addr(addr);
|
||||
if (!enb)
|
||||
{
|
||||
enb = mme_enb_add(sock, addr);
|
||||
ogs_assert(enb);
|
||||
}
|
||||
else
|
||||
{
|
||||
ogs_warn("eNB context duplicated with IP-address [%s]!!!",
|
||||
OGS_ADDR(addr, buf));
|
||||
ogs_sock_destroy(sock);
|
||||
ogs_warn("S1 Socket Closed");
|
||||
}
|
||||
|
||||
rv = s1ap_open();
|
||||
if (rv != OGS_OK) {
|
||||
ogs_error("Can't establish S1AP path");
|
||||
break;
|
||||
}
|
||||
case MME_EVT_S1AP_LO_SCTP_COMM_UP:
|
||||
{
|
||||
ogs_sock_t *sock = NULL;
|
||||
ogs_sockaddr_t *addr = NULL;
|
||||
mme_enb_t *enb = NULL;
|
||||
uint16_t max_num_of_ostreams = 0;
|
||||
|
||||
sock = e->enb_sock;
|
||||
ogs_assert(sock);
|
||||
addr = e->enb_addr;
|
||||
ogs_assert(addr);
|
||||
break;
|
||||
case OGS_FSM_EXIT_SIG:
|
||||
mme_gtp_close();
|
||||
sgsap_close();
|
||||
s1ap_close();
|
||||
|
||||
max_num_of_ostreams = e->max_num_of_ostreams;
|
||||
|
||||
enb = mme_enb_find_by_addr(addr);
|
||||
if (!enb)
|
||||
{
|
||||
enb = mme_enb_add(sock, addr);
|
||||
ogs_assert(enb);
|
||||
}
|
||||
else
|
||||
{
|
||||
ogs_free(addr);
|
||||
}
|
||||
|
||||
enb->max_num_of_ostreams =
|
||||
ogs_min(max_num_of_ostreams, enb->max_num_of_ostreams);
|
||||
|
||||
ogs_debug("eNB-S1 SCTP_COMM_UP[%s] Max Num of Outbound Streams[%d]",
|
||||
OGS_ADDR(addr, buf), enb->max_num_of_ostreams);
|
||||
|
||||
break;
|
||||
}
|
||||
case MME_EVT_S1AP_LO_CONNREFUSED:
|
||||
{
|
||||
ogs_sock_t *sock = NULL;
|
||||
ogs_sockaddr_t *addr = NULL;
|
||||
mme_enb_t *enb = NULL;
|
||||
|
||||
sock = e->enb_sock;
|
||||
ogs_assert(sock);
|
||||
addr = e->enb_addr;
|
||||
ogs_assert(addr);
|
||||
|
||||
enb = mme_enb_find_by_addr(addr);
|
||||
ogs_free(addr);
|
||||
|
||||
if (enb)
|
||||
{
|
||||
ogs_info("eNB-S1[%s] connection refused!!!",
|
||||
OGS_ADDR(addr, buf));
|
||||
mme_enb_remove(enb);
|
||||
}
|
||||
else
|
||||
{
|
||||
ogs_warn("Socket[%s] connection refused, Already Removed!",
|
||||
OGS_ADDR(addr, buf));
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
case MME_EVT_S1AP_MESSAGE:
|
||||
{
|
||||
s1ap_message_t message;
|
||||
mme_enb_t *enb = NULL;
|
||||
ogs_sock_t *sock = NULL;
|
||||
ogs_sockaddr_t *addr = NULL;
|
||||
ogs_pkbuf_t *pkbuf = NULL;
|
||||
int rc;
|
||||
|
||||
sock = e->enb_sock;
|
||||
ogs_assert(sock);
|
||||
addr = e->enb_addr;
|
||||
ogs_assert(addr);
|
||||
pkbuf = e->pkbuf;
|
||||
ogs_assert(pkbuf);
|
||||
|
||||
enb = mme_enb_find_by_addr(addr);
|
||||
ogs_free(addr);
|
||||
break;
|
||||
case MME_EVT_S1AP_LO_ACCEPT:
|
||||
sock = e->enb_sock;
|
||||
ogs_assert(sock);
|
||||
addr = e->enb_addr;
|
||||
ogs_assert(addr);
|
||||
|
||||
ogs_info("eNB-S1 accepted[%s] in master_sm module",
|
||||
OGS_ADDR(addr, buf));
|
||||
|
||||
enb = mme_enb_find_by_addr(addr);
|
||||
if (!enb) {
|
||||
enb = mme_enb_add(sock, addr);
|
||||
ogs_assert(enb);
|
||||
ogs_assert(OGS_FSM_STATE(&enb->sm));
|
||||
|
||||
rc = s1ap_decode_pdu(&message, pkbuf);
|
||||
if (rc == OGS_OK)
|
||||
{
|
||||
e->enb = enb;
|
||||
e->s1ap_message = &message;
|
||||
ogs_fsm_dispatch(&enb->sm, e);
|
||||
}
|
||||
else
|
||||
{
|
||||
ogs_error("Cannot process S1AP message");
|
||||
}
|
||||
|
||||
s1ap_free_pdu(&message);
|
||||
ogs_pkbuf_free(pkbuf);
|
||||
break;
|
||||
} else {
|
||||
ogs_warn("eNB context duplicated with IP-address [%s]!!!",
|
||||
OGS_ADDR(addr, buf));
|
||||
ogs_sock_destroy(sock);
|
||||
ogs_warn("S1 Socket Closed");
|
||||
}
|
||||
case MME_EVT_EMM_MESSAGE:
|
||||
{
|
||||
nas_message_t message;
|
||||
ogs_pkbuf_t *pkbuf = NULL;
|
||||
enb_ue_t *enb_ue = NULL;
|
||||
mme_ue_t *mme_ue = NULL;
|
||||
|
||||
enb_ue = e->enb_ue;
|
||||
ogs_assert(enb_ue);
|
||||
pkbuf = e->pkbuf;
|
||||
ogs_assert(pkbuf);
|
||||
ogs_assert(nas_emm_decode(&message, pkbuf) == OGS_OK);
|
||||
break;
|
||||
case MME_EVT_S1AP_LO_SCTP_COMM_UP:
|
||||
sock = e->enb_sock;
|
||||
ogs_assert(sock);
|
||||
addr = e->enb_addr;
|
||||
ogs_assert(addr);
|
||||
|
||||
mme_ue = enb_ue->mme_ue;
|
||||
if (!mme_ue)
|
||||
{
|
||||
mme_ue = mme_ue_find_by_message(&message);
|
||||
if (!mme_ue)
|
||||
{
|
||||
mme_ue = mme_ue_add(enb_ue);
|
||||
ogs_assert(mme_ue);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Here, if the MME_UE Context is found,
|
||||
* the integrity check is not performed
|
||||
* For example, ATTACH_REQUEST,
|
||||
* TRACKING_AREA_UPDATE_REQUEST message
|
||||
*
|
||||
* Now, We will check the MAC in the NAS message*/
|
||||
nas_security_header_type_t h;
|
||||
h.type = e->nas_type;
|
||||
if (h.integrity_protected)
|
||||
{
|
||||
/* Decryption was performed in S1AP handler.
|
||||
* So, we disabled 'ciphered'
|
||||
* not to decrypt NAS message */
|
||||
h.ciphered = 0;
|
||||
ogs_assert(
|
||||
nas_security_decode(mme_ue, h, pkbuf) == OGS_OK);
|
||||
}
|
||||
}
|
||||
max_num_of_ostreams = e->max_num_of_ostreams;
|
||||
|
||||
/* If NAS(mme_ue_t) has already been associated with
|
||||
* older S1(enb_ue_t) context */
|
||||
if (ECM_CONNECTED(mme_ue))
|
||||
{
|
||||
/* Implcit S1 release */
|
||||
ogs_debug("Implicit S1 release");
|
||||
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
||||
mme_ue->enb_ue->enb_ue_s1ap_id,
|
||||
mme_ue->enb_ue->mme_ue_s1ap_id);
|
||||
rv = enb_ue_remove(mme_ue->enb_ue);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
enb = mme_enb_find_by_addr(addr);
|
||||
if (!enb) {
|
||||
enb = mme_enb_add(sock, addr);
|
||||
ogs_assert(enb);
|
||||
} else {
|
||||
ogs_free(addr);
|
||||
}
|
||||
|
||||
enb->max_num_of_ostreams =
|
||||
ogs_min(max_num_of_ostreams, enb->max_num_of_ostreams);
|
||||
|
||||
ogs_debug("eNB-S1 SCTP_COMM_UP[%s] Max Num of Outbound Streams[%d]",
|
||||
OGS_ADDR(addr, buf), enb->max_num_of_ostreams);
|
||||
|
||||
break;
|
||||
case MME_EVT_S1AP_LO_CONNREFUSED:
|
||||
sock = e->enb_sock;
|
||||
ogs_assert(sock);
|
||||
addr = e->enb_addr;
|
||||
ogs_assert(addr);
|
||||
|
||||
enb = mme_enb_find_by_addr(addr);
|
||||
ogs_free(addr);
|
||||
|
||||
if (enb) {
|
||||
ogs_info("eNB-S1[%s] connection refused!!!",
|
||||
OGS_ADDR(addr, buf));
|
||||
mme_enb_remove(enb);
|
||||
} else {
|
||||
ogs_warn("Socket[%s] connection refused, Already Removed!",
|
||||
OGS_ADDR(addr, buf));
|
||||
}
|
||||
|
||||
break;
|
||||
case MME_EVT_S1AP_MESSAGE:
|
||||
sock = e->enb_sock;
|
||||
ogs_assert(sock);
|
||||
addr = e->enb_addr;
|
||||
ogs_assert(addr);
|
||||
pkbuf = e->pkbuf;
|
||||
ogs_assert(pkbuf);
|
||||
|
||||
enb = mme_enb_find_by_addr(addr);
|
||||
ogs_free(addr);
|
||||
|
||||
ogs_assert(enb);
|
||||
ogs_assert(OGS_FSM_STATE(&enb->sm));
|
||||
|
||||
rc = s1ap_decode_pdu(&s1ap_message, pkbuf);
|
||||
if (rc == OGS_OK) {
|
||||
e->enb = enb;
|
||||
e->s1ap_message = &s1ap_message;
|
||||
ogs_fsm_dispatch(&enb->sm, e);
|
||||
} else {
|
||||
ogs_error("Cannot process S1AP message");
|
||||
}
|
||||
|
||||
s1ap_free_pdu(&s1ap_message);
|
||||
ogs_pkbuf_free(pkbuf);
|
||||
break;
|
||||
case MME_EVT_EMM_MESSAGE:
|
||||
enb_ue = e->enb_ue;
|
||||
ogs_assert(enb_ue);
|
||||
pkbuf = e->pkbuf;
|
||||
ogs_assert(pkbuf);
|
||||
ogs_assert(nas_emm_decode(&nas_message, pkbuf) == OGS_OK);
|
||||
|
||||
mme_ue = enb_ue->mme_ue;
|
||||
if (!mme_ue) {
|
||||
mme_ue = mme_ue_find_by_message(&nas_message);
|
||||
if (!mme_ue) {
|
||||
mme_ue = mme_ue_add(enb_ue);
|
||||
ogs_assert(mme_ue);
|
||||
} else {
|
||||
/* Here, if the MME_UE Context is found,
|
||||
* the integrity check is not performed
|
||||
* For example, ATTACH_REQUEST,
|
||||
* TRACKING_AREA_UPDATE_REQUEST message
|
||||
*
|
||||
* Now, We will check the MAC in the NAS message*/
|
||||
nas_security_header_type_t h;
|
||||
h.type = e->nas_type;
|
||||
if (h.integrity_protected) {
|
||||
/* Decryption was performed in S1AP handler.
|
||||
* So, we disabled 'ciphered'
|
||||
* not to decrypt NAS message */
|
||||
h.ciphered = 0;
|
||||
ogs_assert(nas_security_decode(mme_ue, h, pkbuf) == OGS_OK);
|
||||
}
|
||||
mme_ue_associate_enb_ue(mme_ue, enb_ue);
|
||||
}
|
||||
|
||||
ogs_assert(mme_ue);
|
||||
ogs_assert(OGS_FSM_STATE(&mme_ue->sm));
|
||||
|
||||
e->mme_ue = mme_ue;
|
||||
e->nas_message = &message;
|
||||
|
||||
ogs_fsm_dispatch(&mme_ue->sm, e);
|
||||
if (OGS_FSM_CHECK(&mme_ue->sm, emm_state_exception))
|
||||
{
|
||||
rv = mme_send_delete_session_or_ue_context_release(
|
||||
mme_ue, enb_ue);
|
||||
/* If NAS(mme_ue_t) has already been associated with
|
||||
* older S1(enb_ue_t) context */
|
||||
if (ECM_CONNECTED(mme_ue)) {
|
||||
/* Implcit S1 release */
|
||||
ogs_debug("Implicit S1 release");
|
||||
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
||||
mme_ue->enb_ue->enb_ue_s1ap_id,
|
||||
mme_ue->enb_ue->mme_ue_s1ap_id);
|
||||
rv = enb_ue_remove(mme_ue->enb_ue);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
}
|
||||
|
||||
ogs_pkbuf_free(pkbuf);
|
||||
break;
|
||||
mme_ue_associate_enb_ue(mme_ue, enb_ue);
|
||||
}
|
||||
case MME_EVT_ESM_MESSAGE:
|
||||
{
|
||||
nas_message_t message;
|
||||
mme_ue_t *mme_ue = NULL;
|
||||
mme_bearer_t *bearer = NULL;
|
||||
mme_bearer_t *default_bearer = NULL;
|
||||
mme_sess_t *sess = NULL;
|
||||
ogs_pkbuf_t *pkbuf = NULL;
|
||||
|
||||
mme_ue = e->mme_ue;
|
||||
ogs_assert(mme_ue);
|
||||
ogs_assert(mme_ue);
|
||||
ogs_assert(OGS_FSM_STATE(&mme_ue->sm));
|
||||
|
||||
pkbuf = e->pkbuf;
|
||||
ogs_assert(pkbuf);
|
||||
ogs_assert(nas_esm_decode(&message, pkbuf) == OGS_OK);
|
||||
e->mme_ue = mme_ue;
|
||||
e->nas_message = &nas_message;
|
||||
|
||||
bearer = mme_bearer_find_or_add_by_message(mme_ue, &message);
|
||||
ogs_assert(bearer);
|
||||
sess = bearer->sess;
|
||||
ogs_assert(sess);
|
||||
default_bearer = mme_default_bearer_in_sess(sess);
|
||||
ogs_assert(default_bearer);
|
||||
ogs_fsm_dispatch(&mme_ue->sm, e);
|
||||
if (OGS_FSM_CHECK(&mme_ue->sm, emm_state_exception)) {
|
||||
rv = mme_send_delete_session_or_ue_context_release(
|
||||
mme_ue, enb_ue);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
}
|
||||
|
||||
e->bearer = bearer;
|
||||
e->nas_message = &message;
|
||||
ogs_pkbuf_free(pkbuf);
|
||||
break;
|
||||
case MME_EVT_ESM_MESSAGE:
|
||||
mme_ue = e->mme_ue;
|
||||
ogs_assert(mme_ue);
|
||||
|
||||
ogs_fsm_dispatch(&bearer->sm, e);
|
||||
if (OGS_FSM_CHECK(&bearer->sm,
|
||||
esm_state_bearer_deactivated)) {
|
||||
pkbuf = e->pkbuf;
|
||||
ogs_assert(pkbuf);
|
||||
ogs_assert(nas_esm_decode(&nas_message, pkbuf) == OGS_OK);
|
||||
|
||||
if (default_bearer->ebi == bearer->ebi) {
|
||||
/* if the bearer is a default bearer,
|
||||
* remove all session context linked the default bearer */
|
||||
mme_sess_remove(sess);
|
||||
} else {
|
||||
/* if the bearer is not a default bearer,
|
||||
* just remove the bearer context */
|
||||
mme_bearer_remove(bearer);
|
||||
}
|
||||
bearer = mme_bearer_find_or_add_by_message(mme_ue, &nas_message);
|
||||
ogs_assert(bearer);
|
||||
sess = bearer->sess;
|
||||
ogs_assert(sess);
|
||||
default_bearer = mme_default_bearer_in_sess(sess);
|
||||
ogs_assert(default_bearer);
|
||||
|
||||
} else if (OGS_FSM_CHECK(&bearer->sm,
|
||||
esm_state_pdn_did_disconnect)) {
|
||||
e->bearer = bearer;
|
||||
e->nas_message = &nas_message;
|
||||
|
||||
ogs_assert(default_bearer->ebi == bearer->ebi);
|
||||
ogs_fsm_dispatch(&bearer->sm, e);
|
||||
if (OGS_FSM_CHECK(&bearer->sm, esm_state_bearer_deactivated)) {
|
||||
if (default_bearer->ebi == bearer->ebi) {
|
||||
/* if the bearer is a default bearer,
|
||||
* remove all session context linked the default bearer */
|
||||
mme_sess_remove(sess);
|
||||
|
||||
} else if (OGS_FSM_CHECK(&bearer->sm,
|
||||
esm_state_exception)) {
|
||||
|
||||
/*
|
||||
* [Enhancement] - Probably Invalid APN
|
||||
* At this point, we'll forcely release UE context
|
||||
*/
|
||||
rv = mme_send_delete_session_or_ue_context_release(
|
||||
mme_ue, mme_ue->enb_ue);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
} else {
|
||||
/* if the bearer is not a default bearer,
|
||||
* just remove the bearer context */
|
||||
mme_bearer_remove(bearer);
|
||||
}
|
||||
|
||||
ogs_pkbuf_free(pkbuf);
|
||||
break;
|
||||
} else if (OGS_FSM_CHECK(&bearer->sm, esm_state_pdn_did_disconnect)) {
|
||||
ogs_assert(default_bearer->ebi == bearer->ebi);
|
||||
mme_sess_remove(sess);
|
||||
|
||||
} else if (OGS_FSM_CHECK(&bearer->sm, esm_state_exception)) {
|
||||
/*
|
||||
* [Enhancement] - Probably Invalid APN
|
||||
* At this point, we'll forcely release UE context
|
||||
*/
|
||||
rv = mme_send_delete_session_or_ue_context_release(
|
||||
mme_ue, mme_ue->enb_ue);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
}
|
||||
case MME_EVT_S6A_MESSAGE:
|
||||
{
|
||||
int rv;
|
||||
mme_ue_t *mme_ue = NULL;
|
||||
ogs_pkbuf_t *s6abuf = NULL;
|
||||
s6a_message_t *s6a_message = NULL;
|
||||
|
||||
mme_ue = e->mme_ue;
|
||||
ogs_assert(mme_ue);
|
||||
s6abuf = e->pkbuf;
|
||||
ogs_assert(s6abuf);
|
||||
s6a_message = s6abuf->data;
|
||||
ogs_assert(s6a_message);
|
||||
ogs_pkbuf_free(pkbuf);
|
||||
break;
|
||||
case MME_EVT_S6A_MESSAGE:
|
||||
mme_ue = e->mme_ue;
|
||||
ogs_assert(mme_ue);
|
||||
s6abuf = e->pkbuf;
|
||||
ogs_assert(s6abuf);
|
||||
s6a_message = s6abuf->data;
|
||||
ogs_assert(s6a_message);
|
||||
|
||||
if (s6a_message->result_code != ER_DIAMETER_SUCCESS)
|
||||
{
|
||||
enb_ue_t *enb_ue = NULL;
|
||||
if (s6a_message->result_code != ER_DIAMETER_SUCCESS) {
|
||||
enb_ue_t *enb_ue = NULL;
|
||||
|
||||
rv = nas_send_attach_reject(mme_ue,
|
||||
EMM_CAUSE_IMSI_UNKNOWN_IN_HSS,
|
||||
ESM_CAUSE_PROTOCOL_ERROR_UNSPECIFIED);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
ogs_warn("EMM_CAUSE : IMSI Unknown in HSS");
|
||||
rv = nas_send_attach_reject(mme_ue,
|
||||
EMM_CAUSE_IMSI_UNKNOWN_IN_HSS,
|
||||
ESM_CAUSE_PROTOCOL_ERROR_UNSPECIFIED);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
ogs_warn("EMM_CAUSE : IMSI Unknown in HSS");
|
||||
|
||||
enb_ue = mme_ue->enb_ue;
|
||||
ogs_assert(enb_ue);
|
||||
enb_ue = mme_ue->enb_ue;
|
||||
ogs_assert(enb_ue);
|
||||
|
||||
rv = s1ap_send_ue_context_release_command(enb_ue,
|
||||
S1AP_Cause_PR_nas, S1AP_CauseNas_normal_release,
|
||||
S1AP_UE_CTX_REL_UE_CONTEXT_REMOVE, 0);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
rv = s1ap_send_ue_context_release_command(enb_ue,
|
||||
S1AP_Cause_PR_nas, S1AP_CauseNas_normal_release,
|
||||
S1AP_UE_CTX_REL_UE_CONTEXT_REMOVE, 0);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
|
||||
ogs_pkbuf_free(s6abuf);
|
||||
break;
|
||||
}
|
||||
|
||||
switch(s6a_message->cmd_code)
|
||||
{
|
||||
case S6A_CMD_CODE_AUTHENTICATION_INFORMATION:
|
||||
{
|
||||
mme_s6a_handle_aia(mme_ue, &s6a_message->aia_message);
|
||||
break;
|
||||
}
|
||||
case S6A_CMD_CODE_UPDATE_LOCATION:
|
||||
{
|
||||
mme_s6a_handle_ula(mme_ue, &s6a_message->ula_message);
|
||||
|
||||
if (OGS_FSM_CHECK(&mme_ue->sm,
|
||||
emm_state_initial_context_setup))
|
||||
{
|
||||
if (mme_ue->nas_eps.type == MME_EPS_TYPE_ATTACH_REQUEST)
|
||||
{
|
||||
rv = nas_send_emm_to_esm(mme_ue,
|
||||
&mme_ue->pdn_connectivity_request);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
}
|
||||
else
|
||||
{
|
||||
ogs_fatal("Invalid Type[%d]", mme_ue->nas_eps.type);
|
||||
ogs_assert_if_reached();
|
||||
}
|
||||
}
|
||||
else if (OGS_FSM_CHECK(&mme_ue->sm, emm_state_registered))
|
||||
{
|
||||
if (mme_ue->nas_eps.type == MME_EPS_TYPE_TAU_REQUEST)
|
||||
{
|
||||
rv = nas_send_tau_accept(mme_ue,
|
||||
S1AP_ProcedureCode_id_InitialContextSetup);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
}
|
||||
else if (mme_ue->nas_eps.type ==
|
||||
MME_EPS_TYPE_SERVICE_REQUEST)
|
||||
{
|
||||
rv = s1ap_send_initial_context_setup_request(
|
||||
mme_ue);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
}
|
||||
else
|
||||
{
|
||||
ogs_fatal("Invalid Type[%d]", mme_ue->nas_eps.type);
|
||||
ogs_assert_if_reached();
|
||||
}
|
||||
}
|
||||
else
|
||||
ogs_assert_if_reached();
|
||||
break;
|
||||
}
|
||||
default:
|
||||
{
|
||||
ogs_error("Invalid Type[%d]", s6a_message->cmd_code);
|
||||
break;
|
||||
}
|
||||
}
|
||||
ogs_pkbuf_free(s6abuf);
|
||||
break;
|
||||
}
|
||||
case MME_EVT_S11_MESSAGE:
|
||||
{
|
||||
int rv;
|
||||
ogs_pkbuf_t *pkbuf = NULL;
|
||||
gtp_xact_t *xact = NULL;
|
||||
gtp_message_t message;
|
||||
mme_ue_t *mme_ue = NULL;
|
||||
|
||||
pkbuf = e->pkbuf;
|
||||
ogs_assert(pkbuf);
|
||||
rv = gtp_parse_msg(&message, pkbuf);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
switch (s6a_message->cmd_code) {
|
||||
case S6A_CMD_CODE_AUTHENTICATION_INFORMATION:
|
||||
mme_s6a_handle_aia(mme_ue, &s6a_message->aia_message);
|
||||
break;
|
||||
case S6A_CMD_CODE_UPDATE_LOCATION:
|
||||
mme_s6a_handle_ula(mme_ue, &s6a_message->ula_message);
|
||||
|
||||
mme_ue = mme_ue_find_by_teid(message.h.teid);
|
||||
ogs_assert(mme_ue);
|
||||
|
||||
rv = gtp_xact_receive(mme_ue->gnode, &message.h, &xact);
|
||||
if (rv != OGS_OK)
|
||||
{
|
||||
ogs_pkbuf_free(pkbuf);
|
||||
break;
|
||||
if (OGS_FSM_CHECK(&mme_ue->sm, emm_state_initial_context_setup)) {
|
||||
if (mme_ue->nas_eps.type == MME_EPS_TYPE_ATTACH_REQUEST) {
|
||||
rv = nas_send_emm_to_esm(mme_ue,
|
||||
&mme_ue->pdn_connectivity_request);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
} else {
|
||||
ogs_fatal("Invalid Type[%d]", mme_ue->nas_eps.type);
|
||||
ogs_assert_if_reached();
|
||||
}
|
||||
}
|
||||
else if (OGS_FSM_CHECK(&mme_ue->sm, emm_state_registered)) {
|
||||
if (mme_ue->nas_eps.type == MME_EPS_TYPE_TAU_REQUEST) {
|
||||
rv = nas_send_tau_accept(mme_ue,
|
||||
S1AP_ProcedureCode_id_InitialContextSetup);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
} else if (mme_ue->nas_eps.type ==
|
||||
MME_EPS_TYPE_SERVICE_REQUEST) {
|
||||
rv = s1ap_send_initial_context_setup_request(
|
||||
mme_ue);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
} else {
|
||||
ogs_fatal("Invalid Type[%d]", mme_ue->nas_eps.type);
|
||||
ogs_assert_if_reached();
|
||||
}
|
||||
} else
|
||||
ogs_assert_if_reached();
|
||||
break;
|
||||
default:
|
||||
ogs_error("Invalid Type[%d]", s6a_message->cmd_code);
|
||||
break;
|
||||
}
|
||||
ogs_pkbuf_free(s6abuf);
|
||||
break;
|
||||
case MME_EVT_S11_MESSAGE:
|
||||
pkbuf = e->pkbuf;
|
||||
ogs_assert(pkbuf);
|
||||
rv = gtp_parse_msg(>p_message, pkbuf);
|
||||
ogs_assert(rv == OGS_OK);
|
||||
|
||||
switch(message.h.type)
|
||||
{
|
||||
case GTP_CREATE_SESSION_RESPONSE_TYPE:
|
||||
mme_s11_handle_create_session_response(
|
||||
xact, mme_ue, &message.create_session_response);
|
||||
break;
|
||||
case GTP_MODIFY_BEARER_RESPONSE_TYPE:
|
||||
mme_s11_handle_modify_bearer_response(
|
||||
xact, mme_ue, &message.modify_bearer_response);
|
||||
break;
|
||||
case GTP_DELETE_SESSION_RESPONSE_TYPE:
|
||||
mme_s11_handle_delete_session_response(
|
||||
xact, mme_ue, &message.delete_session_response);
|
||||
break;
|
||||
case GTP_CREATE_BEARER_REQUEST_TYPE:
|
||||
mme_s11_handle_create_bearer_request(
|
||||
xact, mme_ue, &message.create_bearer_request);
|
||||
break;
|
||||
case GTP_UPDATE_BEARER_REQUEST_TYPE:
|
||||
mme_s11_handle_update_bearer_request(
|
||||
xact, mme_ue, &message.update_bearer_request);
|
||||
break;
|
||||
case GTP_DELETE_BEARER_REQUEST_TYPE:
|
||||
mme_s11_handle_delete_bearer_request(
|
||||
xact, mme_ue, &message.delete_bearer_request);
|
||||
break;
|
||||
case GTP_RELEASE_ACCESS_BEARERS_RESPONSE_TYPE:
|
||||
mme_s11_handle_release_access_bearers_response(
|
||||
xact, mme_ue, &message.release_access_bearers_response);
|
||||
break;
|
||||
case GTP_DOWNLINK_DATA_NOTIFICATION_TYPE:
|
||||
mme_s11_handle_downlink_data_notification(
|
||||
xact, mme_ue, &message.downlink_data_notification);
|
||||
mme_ue = mme_ue_find_by_teid(gtp_message.h.teid);
|
||||
ogs_assert(mme_ue);
|
||||
|
||||
/*
|
||||
* 5.3.4.2 in Spec 23.401
|
||||
* Under certain conditions, the current UE triggered Service Request
|
||||
* procedure can cause unnecessary Downlink Packet Notification messages
|
||||
* which increase the load of the MME.
|
||||
*
|
||||
* This can occur when uplink data sent in step 6 causes a response
|
||||
* on the downlink which arrives at the Serving GW before the Modify Bearer
|
||||
* Request message, step 8. This data cannot be forwarded from the Serving GW
|
||||
* to the eNodeB and hence it triggers a Downlink Data Notification message.
|
||||
*
|
||||
* If the MME receives a Downlink Data Notification after step 2 and
|
||||
* before step 9, the MME shall not send S1 interface paging messages
|
||||
*/
|
||||
if (ECM_IDLE(mme_ue))
|
||||
{
|
||||
s1ap_handle_paging(mme_ue);
|
||||
/* Start T3413 */
|
||||
ogs_timer_start(mme_ue->t3413, mme_self()->t3413_value);
|
||||
}
|
||||
break;
|
||||
case GTP_CREATE_INDIRECT_DATA_FORWARDING_TUNNEL_RESPONSE_TYPE:
|
||||
mme_s11_handle_create_indirect_data_forwarding_tunnel_response(
|
||||
xact, mme_ue,
|
||||
&message.create_indirect_data_forwarding_tunnel_response);
|
||||
break;
|
||||
case GTP_DELETE_INDIRECT_DATA_FORWARDING_TUNNEL_RESPONSE_TYPE:
|
||||
mme_s11_handle_delete_indirect_data_forwarding_tunnel_response(
|
||||
xact, mme_ue,
|
||||
&message.delete_indirect_data_forwarding_tunnel_response);
|
||||
break;
|
||||
default:
|
||||
ogs_warn("Not implmeneted(type:%d)", message.h.type);
|
||||
break;
|
||||
}
|
||||
rv = gtp_xact_receive(mme_ue->gnode, >p_message.h, &xact);
|
||||
if (rv != OGS_OK) {
|
||||
ogs_pkbuf_free(pkbuf);
|
||||
break;
|
||||
}
|
||||
|
||||
switch (gtp_message.h.type) {
|
||||
case GTP_CREATE_SESSION_RESPONSE_TYPE:
|
||||
mme_s11_handle_create_session_response(
|
||||
xact, mme_ue, >p_message.create_session_response);
|
||||
break;
|
||||
case GTP_MODIFY_BEARER_RESPONSE_TYPE:
|
||||
mme_s11_handle_modify_bearer_response(
|
||||
xact, mme_ue, >p_message.modify_bearer_response);
|
||||
break;
|
||||
case GTP_DELETE_SESSION_RESPONSE_TYPE:
|
||||
mme_s11_handle_delete_session_response(
|
||||
xact, mme_ue, >p_message.delete_session_response);
|
||||
break;
|
||||
case GTP_CREATE_BEARER_REQUEST_TYPE:
|
||||
mme_s11_handle_create_bearer_request(
|
||||
xact, mme_ue, >p_message.create_bearer_request);
|
||||
break;
|
||||
case GTP_UPDATE_BEARER_REQUEST_TYPE:
|
||||
mme_s11_handle_update_bearer_request(
|
||||
xact, mme_ue, >p_message.update_bearer_request);
|
||||
break;
|
||||
case GTP_DELETE_BEARER_REQUEST_TYPE:
|
||||
mme_s11_handle_delete_bearer_request(
|
||||
xact, mme_ue, >p_message.delete_bearer_request);
|
||||
break;
|
||||
case GTP_RELEASE_ACCESS_BEARERS_RESPONSE_TYPE:
|
||||
mme_s11_handle_release_access_bearers_response(
|
||||
xact, mme_ue, >p_message.release_access_bearers_response);
|
||||
break;
|
||||
case GTP_DOWNLINK_DATA_NOTIFICATION_TYPE:
|
||||
mme_s11_handle_downlink_data_notification(
|
||||
xact, mme_ue, >p_message.downlink_data_notification);
|
||||
|
||||
/*
|
||||
* 5.3.4.2 in Spec 23.401
|
||||
* Under certain conditions, the current UE triggered Service Request
|
||||
* procedure can cause unnecessary Downlink Packet Notification messages
|
||||
* which increase the load of the MME.
|
||||
*
|
||||
* This can occur when uplink data sent in step 6 causes a response
|
||||
* on the downlink which arrives at the Serving GW before the Modify Bearer
|
||||
* Request message, step 8. This data cannot be forwarded from the Serving GW
|
||||
* to the eNodeB and hence it triggers a Downlink Data Notification message.
|
||||
*
|
||||
* If the MME receives a Downlink Data Notification after step 2 and
|
||||
* before step 9, the MME shall not send S1 interface paging messages
|
||||
*/
|
||||
if (ECM_IDLE(mme_ue)) {
|
||||
s1ap_handle_paging(mme_ue);
|
||||
/* Start T3413 */
|
||||
ogs_timer_start(mme_ue->t3413, mme_self()->t3413_value);
|
||||
}
|
||||
break;
|
||||
case GTP_CREATE_INDIRECT_DATA_FORWARDING_TUNNEL_RESPONSE_TYPE:
|
||||
mme_s11_handle_create_indirect_data_forwarding_tunnel_response(
|
||||
xact, mme_ue,
|
||||
>p_message.create_indirect_data_forwarding_tunnel_response);
|
||||
break;
|
||||
case GTP_DELETE_INDIRECT_DATA_FORWARDING_TUNNEL_RESPONSE_TYPE:
|
||||
mme_s11_handle_delete_indirect_data_forwarding_tunnel_response(
|
||||
xact, mme_ue,
|
||||
>p_message.delete_indirect_data_forwarding_tunnel_response);
|
||||
break;
|
||||
default:
|
||||
{
|
||||
ogs_error("No handler for event %s", mme_event_get_name(e));
|
||||
ogs_warn("Not implmeneted(type:%d)", gtp_message.h.type);
|
||||
break;
|
||||
}
|
||||
ogs_pkbuf_free(pkbuf);
|
||||
break;
|
||||
default:
|
||||
ogs_error("No handler for event %s", mme_event_get_name(e));
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
|
|
@ -37,10 +37,10 @@ ogs_sock_t *sgsap_client(ogs_socknode_t *node)
|
|||
ogs_socknode_set_poll(node, mme_self()->pollset,
|
||||
OGS_POLLIN, sgsap_recv_handler, node);
|
||||
|
||||
ogs_sctp_client(SOCK_STREAM, node);
|
||||
|
||||
ogs_info("sgsap client() [%s]:%d",
|
||||
OGS_ADDR(node->addr, buf), OGS_PORT(node->addr));
|
||||
sock = ogs_sctp_client(SOCK_STREAM, node);
|
||||
if (sock)
|
||||
ogs_info("sgsap client() [%s]:%d",
|
||||
OGS_ADDR(node->addr, buf), OGS_PORT(node->addr));
|
||||
|
||||
return sock;
|
||||
}
|
||||
|
|
|
@ -51,29 +51,6 @@ void sgsap_close()
|
|||
}
|
||||
}
|
||||
|
||||
void sgsap_connect_timeout(void *data)
|
||||
{
|
||||
#if 0
|
||||
mme_vlr_t *vlr = data;
|
||||
ogs_assert(vlr);
|
||||
|
||||
if (mme_ue->max_paging_retry >= MAX_NUM_OF_PAGING) {
|
||||
/* Paging failed */
|
||||
ogs_warn("[EMM] Paging to IMSI[%s] failed. Stop paging",
|
||||
mme_ue->imsi_bcd);
|
||||
if (mme_ue->last_paging_msg) {
|
||||
ogs_pkbuf_free(mme_ue->last_paging_msg);
|
||||
mme_ue->last_paging_msg = NULL;
|
||||
}
|
||||
} else {
|
||||
mme_ue->max_paging_retry++;
|
||||
s1ap_handle_paging(mme_ue);
|
||||
/* Start T3413 */
|
||||
ogs_timer_start(mme_ue->t3413, mme_self()->t3413_value);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
int sgsap_send(ogs_sock_t *sock, ogs_pkbuf_t *pkbuf,
|
||||
ogs_sockaddr_t *addr, uint16_t stream_no)
|
||||
{
|
||||
|
|
|
@ -32,8 +32,6 @@ void sgsap_close(void);
|
|||
ogs_sock_t *sgsap_client(ogs_socknode_t *node);
|
||||
void sgsap_recv_handler(short when, ogs_socket_t fd, void *data);
|
||||
|
||||
void sgsap_connect_timeout(void *data);
|
||||
|
||||
int sgsap_send(ogs_sock_t *sock,
|
||||
ogs_pkbuf_t *pkbuf, ogs_sockaddr_t *addr, uint16_t stream_no);
|
||||
int sgsap_recv(ogs_sock_t *sock, ogs_pkbuf_t *pkbuf);
|
||||
|
|
|
@ -17,12 +17,16 @@
|
|||
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include "ogs-sctp.h"
|
||||
|
||||
#include "mme-context.h"
|
||||
#include "mme-event.h"
|
||||
#include "mme-sm.h"
|
||||
|
||||
#include "sgsap-path.h"
|
||||
|
||||
static void sgsap_connect_timeout(void *data);
|
||||
|
||||
void sgsap_state_initial(ogs_fsm_t *s, mme_event_t *e)
|
||||
{
|
||||
mme_vlr_t *vlr = NULL;
|
||||
|
@ -66,14 +70,16 @@ void sgsap_state_will_connect(ogs_fsm_t *s, mme_event_t *e)
|
|||
vlr = e->vlr;
|
||||
ogs_assert(vlr);
|
||||
|
||||
ogs_assert(vlr->t_conn);
|
||||
ogs_assert(vlr->node);
|
||||
|
||||
switch (e->id) {
|
||||
case OGS_FSM_ENTRY_SIG:
|
||||
ogs_assert(vlr->node);
|
||||
ogs_timer_start(vlr->t_conn, mme_self()->t_conn_value);
|
||||
sgsap_client(vlr->node);
|
||||
break;
|
||||
case OGS_FSM_EXIT_SIG:
|
||||
break;
|
||||
case MME_EVT_SGSAP_MESSAGE:
|
||||
ogs_timer_stop(vlr->t_conn);
|
||||
break;
|
||||
default:
|
||||
ogs_error("Unknown event %s", mme_event_get_name(e));
|
||||
|
@ -119,3 +125,30 @@ void sgsap_state_exception(ogs_fsm_t *s, mme_event_t *e)
|
|||
}
|
||||
}
|
||||
|
||||
static void sgsap_connect_timeout(void *data)
|
||||
{
|
||||
char buf[OGS_ADDRSTRLEN];
|
||||
|
||||
mme_vlr_t *vlr = data;
|
||||
ogs_socknode_t *node = NULL;
|
||||
ogs_sockaddr_t *addr = NULL;
|
||||
|
||||
ogs_assert(vlr);
|
||||
node = vlr->node;
|
||||
ogs_assert(node);
|
||||
addr = node->addr;
|
||||
ogs_assert(addr);
|
||||
|
||||
ogs_warn("[SGsAP] Connect to VLR[%s]:%d failed",
|
||||
OGS_ADDR(addr, buf), OGS_PORT(addr));
|
||||
|
||||
ogs_assert(vlr->t_conn);
|
||||
ogs_timer_start(vlr->t_conn, mme_self()->t_conn_value);
|
||||
|
||||
ogs_assert(vlr->node->sock);
|
||||
ogs_sctp_destroy(vlr->node->sock);
|
||||
|
||||
ogs_assert(vlr->node);
|
||||
sgsap_client(vlr->node);
|
||||
}
|
||||
|
||||
|
|
|
@ -42,10 +42,9 @@ ogs_sock_t *sgsap_client(ogs_socknode_t *node)
|
|||
OGS_POLLIN, sgsap_usrsctp_recv_handler, node);
|
||||
|
||||
sock = ogs_sctp_client(SOCK_SEQPACKET, node);
|
||||
ogs_assert(sock);
|
||||
|
||||
ogs_info("sgsap_client() [%s]:%d",
|
||||
OGS_ADDR(node->addr, buf), OGS_PORT(node->addr));
|
||||
if (sock)
|
||||
ogs_info("sgsap_client() [%s]:%d",
|
||||
OGS_ADDR(node->addr, buf), OGS_PORT(node->addr));
|
||||
|
||||
return sock;
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue