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MME: support for IDR EPS_USER_STATE 

keep track of whether we failed to page the UE, as that is
needed to provide the correct user state to the HSS.
This commit is contained in:
Emanuele Di Pascale 2024-01-11 12:15:24 +01:00 committed by Sukchan Lee
parent 77d94c0301
commit 21f99ad08d
4 changed files with 60 additions and 14 deletions
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1
src/mme/emm-sm.c
View File

@ -144,6 +144,7 @@ void emm_state_registered(ogs_fsm_t *s, mme_event_t *e)
ogs_warn("Paging to IMSI[%s] failed. Stop paging",
mme_ue->imsi_bcd);
CLEAR_MME_UE_TIMER(mme_ue->t3413);
mme_ue->paging.failed = true;
if (MME_PAGING_ONGOING(mme_ue))
mme_send_after_paging(mme_ue, true);

2
src/mme/mme-context.h
View File

@ -586,6 +586,7 @@ struct mme_ue_s {
ogs_assert(__mME); \
ogs_debug("[%s] Clear Paging Info", (__mME)->imsi_bcd); \
(__mME)->paging.type = 0; \
(__mME)->paging.failed = false; \
} while(0)
#define MME_STORE_PAGING_INFO(__mME, __tYPE, __dATA) \
@ -608,6 +609,7 @@ struct mme_ue_s {
#define MME_PAGING_TYPE_DETACH_TO_UE 7
int type;
void *data;
bool failed;
} paging;
/* SGW UE context */

68
src/mme/mme-fd-path.c
View File

@ -1932,7 +1932,7 @@ static int mme_ogs_diam_s6a_idr_cb( struct msg **msg, struct avp *avp,
char imsi_bcd[OGS_MAX_IMSI_BCD_LEN+1];
uint32_t result_code = 0;
bool has_subscriber_data;
struct msg *ans, *qry;
mme_event_t *e = NULL;
@ -2022,7 +2022,7 @@ static int mme_ogs_diam_s6a_idr_cb( struct msg **msg, struct avp *avp,
uint32_t ida_cell_id = mme_ue->e_cgi.cell_id;
uint16_t ida_tac = mme_ue->tai.tac;
struct avp *avp_mme_location_information;
struct avp *avp_e_utran_cell_global_identity;
struct avp *avp_tracking_area_identity;
@ -2088,18 +2088,58 @@ static int mme_ogs_diam_s6a_idr_cb( struct msg **msg, struct avp *avp,
ogs_assert(ret == 0);
ret = fd_msg_avp_add(ans, MSG_BRW_LAST_CHILD, avp);
ogs_assert(ret == 0);
} else {
if (!has_subscriber_data) {
ogs_error("Insert Subscriber Data "
"with unsupported IDR Flags "
"or no Subscriber-Data for IMSI[%s]", imsi_bcd);
/* Set the Origin-Host, Origin-Realm, and Result-Code AVPs */
ret = fd_msg_rescode_set(
ans, (char*)"DIAMETER_UNABLE_TO_COMPLY", NULL, NULL, 1);
ogs_assert(ret == 0);
goto outnoexp;
}
ogs_assert(ret == 0);
}
if (idr_message->idr_flags & OGS_DIAM_S6A_IDR_FLAGS_EPS_USER_STATE) {
#define OGS_DIAM_S6A_USER_STATE_DETACHED 0
#define OGS_DIAM_S6A_USER_STATE_ATTACHED_NOT_REACHABLE_FOR_PAGING 1
#define OGS_DIAM_S6A_USER_STATE_ATTACHED_REACHABLE_FOR_PAGING 2
#define OGS_DIAM_S6A_USER_STATE_CONNECTED_NOT_REACHABLE_FOR_PAGING 3
#define OGS_DIAM_S6A_USER_STATE_CONNECTED_REACHABLE_FOR_PAGING 4
#define OGS_DIAM_S6A_USER_STATE_RESERVED 5
struct avp *avp_eps_user_state = NULL;
struct avp *avp_mme_user_state = NULL;
struct avp *avp_user_state = NULL;
uint32_t user_state = 0;
/* check user state */
if (!ECM_CONNECTED(mme_ue))
user_state = OGS_DIAM_S6A_USER_STATE_DETACHED;
else if (mme_ue->paging.failed)
user_state = OGS_DIAM_S6A_USER_STATE_CONNECTED_NOT_REACHABLE_FOR_PAGING;
else
user_state = OGS_DIAM_S6A_USER_STATE_CONNECTED_REACHABLE_FOR_PAGING;
/* Set the EPS-User-State AVP */
ret = fd_msg_avp_new(ogs_diam_s6a_eps_user_state, 0, &avp_eps_user_state);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_s6a_mme_user_state, 0, &avp_mme_user_state);
ogs_assert(ret == 0);
ret = fd_msg_avp_new(ogs_diam_s6a_user_state, 0, &avp_user_state);
ogs_assert(ret == 0);
memset(&val, 0, sizeof(val));
val.i32 = user_state;
ret = fd_msg_avp_setvalue(avp_user_state, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(avp_mme_user_state, MSG_BRW_LAST_CHILD, avp_user_state);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(avp_eps_user_state, MSG_BRW_LAST_CHILD, avp_mme_user_state);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(ans, MSG_BRW_LAST_CHILD, avp_eps_user_state);
ogs_assert(ret == 0);
}
if (!has_subscriber_data &&
!(idr_message->idr_flags & OGS_DIAM_S6A_IDR_FLAGS_EPS_LOCATION_INFO) &&
!(idr_message->idr_flags & OGS_DIAM_S6A_IDR_FLAGS_EPS_USER_STATE))
{
ogs_error("Insert Subscriber Data "
"with unsupported IDR Flags "
"or no Subscriber-Data for IMSI[%s]", imsi_bcd);
/* Set the Origin-Host, Origin-Realm, and Result-Code AVPs */
ret = fd_msg_rescode_set(
ans, (char*)"DIAMETER_UNABLE_TO_COMPLY", NULL, NULL, 1);
ogs_assert(ret == 0);
goto outnoexp;
}
/* Set the Origin-Host, Origin-Realm, andResult-Code AVPs */

3
src/mme/mme-path.c
View File

@ -296,4 +296,7 @@ void mme_send_after_paging(mme_ue_t *mme_ue, bool failed)
cleanup:
CLEAR_SERVICE_INDICATOR(mme_ue);
MME_CLEAR_PAGING_INFO(mme_ue);
/* the above will clear the failure flag, restore it if we failed */
if (failed)
mme_ue->paging.failed = true;
}