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Add S1down auto recovery.

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(cherry picked from commit 2339972ceaeb75fe18c0b2ae9ea69216dd919668)
This commit is contained in:
Haruki NAOI
2021-01-06 19:51:11 +09:00
committed by masayuki.harada
parent 7631a1dc1d
commit 46407ca42b
19 changed files with 1289 additions and 118 deletions
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openair3/S1AP/s1ap_eNB.c
+362 -36
View File
@@ -58,6 +58,8 @@
#include "s1ap_eNB_ue_context.h" // test, to be removed
#include "msc.h"
#include "s1ap_eNB_timer.h"
#include "assertions.h"
#include "conversions.h"
#if defined(TEST_S1C_MME)
@@ -73,6 +75,11 @@ void s1ap_eNB_handle_register_eNB(instance_t instance, s1ap_register_enb_req_t *
void s1ap_eNB_handle_sctp_association_resp(instance_t instance, sctp_new_association_resp_t *sctp_new_association_resp);
static int s1ap_sctp_req(s1ap_eNB_instance_t *instance_p,
s1ap_eNB_mme_data_t *s1ap_mme_data_p);
void s1ap_eNB_timer_expired(instance_t instance,
s1ap_timer_has_expired_t *msg_p);
uint32_t s1ap_generate_eNB_id(void) {
char *out;
char hostname[50];
@@ -114,9 +121,9 @@ static void s1ap_eNB_register_mme(s1ap_eNB_instance_t *instance_p,
local_ip_addr,
sizeof(*local_ip_addr));
S1AP_INFO("[eNB %d] check the mme registration state\n",instance_p->instance);
mme = NULL;
if ( mme == NULL ) {
// mme = NULL;
//
// if ( mme == NULL ) {
/* Create new MME descriptor */
s1ap_mme_data_p = calloc(1, sizeof(*s1ap_mme_data_p));
DevAssert(s1ap_mme_data_p != NULL);
@@ -136,28 +143,33 @@ static void s1ap_eNB_register_mme(s1ap_eNB_instance_t *instance_p,
* but not yet associated.
*/
RB_INSERT(s1ap_mme_map, &instance_p->s1ap_mme_head, s1ap_mme_data_p);
s1ap_mme_data_p->state = S1AP_ENB_STATE_WAITING;
instance_p->s1ap_mme_nb ++;
// s1ap_mme_data_p->state = S1AP_ENB_STATE_WAITING;
s1ap_mme_data_p->state = S1AP_ENB_STATE_DISCONNECTED;
memcpy( &(s1ap_mme_data_p->mme_ip_address), mme_ip_address, sizeof(net_ip_address_t) );
s1ap_mme_data_p->overload_state = S1AP_NO_OVERLOAD;
s1ap_mme_data_p->sctp_req_cnt++;
s1ap_mme_data_p->timer_id = S1AP_TIMERID_INIT;
// instance_p->s1ap_mme_nb ++;
instance_p->s1ap_mme_pending_nb ++;
} else if (mme->state == S1AP_ENB_STATE_WAITING) {
instance_p->s1ap_mme_pending_nb ++;
sctp_new_association_req_p->ulp_cnx_id = mme->cnx_id;
S1AP_INFO("[eNB %d] MME already registered, retrive the data (state %d, cnx %d, mme_nb %d, mme_pending_nb %d)\n",
instance_p->instance,
mme->state, mme->cnx_id,
instance_p->s1ap_mme_nb, instance_p->s1ap_mme_pending_nb);
/*s1ap_mme_data_p->cnx_id = mme->cnx_id;
sctp_new_association_req_p->ulp_cnx_id = mme->cnx_id;
s1ap_mme_data_p->assoc_id = -1;
s1ap_mme_data_p->s1ap_eNB_instance = instance_p;
*/
} else {
S1AP_WARN("[eNB %d] MME already registered but not in the waiting state, retrive the data (state %d, cnx %d, mme_nb %d, mme_pending_nb %d)\n",
instance_p->instance,
mme->state, mme->cnx_id,
instance_p->s1ap_mme_nb, instance_p->s1ap_mme_pending_nb);
}
// } else if (mme->state == S1AP_ENB_STATE_WAITING) {
// instance_p->s1ap_mme_pending_nb ++;
// sctp_new_association_req_p->ulp_cnx_id = mme->cnx_id;
// S1AP_INFO("[eNB %d] MME already registered, retrive the data (state %d, cnx %d, mme_nb %d, mme_pending_nb %d)\n",
// instance_p->instance,
// mme->state, mme->cnx_id,
// instance_p->s1ap_mme_nb, instance_p->s1ap_mme_pending_nb);
// /*s1ap_mme_data_p->cnx_id = mme->cnx_id;
// sctp_new_association_req_p->ulp_cnx_id = mme->cnx_id;
//
// s1ap_mme_data_p->assoc_id = -1;
// s1ap_mme_data_p->s1ap_eNB_instance = instance_p;
// */
// } else {
// S1AP_WARN("[eNB %d] MME already registered but not in the waiting state, retrive the data (state %d, cnx %d, mme_nb %d, mme_pending_nb %d)\n",
// instance_p->instance,
// mme->state, mme->cnx_id,
// instance_p->s1ap_mme_nb, instance_p->s1ap_mme_pending_nb);
// }
itti_send_msg_to_task(TASK_SCTP, instance_p->instance, message_p);
}
@@ -168,6 +180,7 @@ void s1ap_eNB_handle_register_eNB(instance_t instance, s1ap_register_enb_req_t *
uint8_t index;
DevAssert(s1ap_register_eNB != NULL);
/* Look if the provided instance already exists */
s1ap_timer_init();
new_instance = s1ap_eNB_get_instance(instance);
if (new_instance != NULL) {
@@ -195,7 +208,7 @@ void s1ap_eNB_handle_register_eNB(instance_t instance, s1ap_register_enb_req_t *
new_instance->eNB_id = s1ap_register_eNB->eNB_id;
new_instance->cell_type = s1ap_register_eNB->cell_type;
new_instance->tac = s1ap_register_eNB->tac;
memcpy(&new_instance->eNB_s1_ip,
&s1ap_register_eNB->enb_ip_address,
sizeof(s1ap_register_eNB->enb_ip_address));
@@ -206,6 +219,15 @@ void s1ap_eNB_handle_register_eNB(instance_t instance, s1ap_register_enb_req_t *
new_instance->mnc_digit_length[i] = s1ap_register_eNB->mnc_digit_length[i];
}
memcpy( &(new_instance->enb_ip_address), &(s1ap_register_eNB->enb_ip_address), sizeof(net_ip_address_t) );
new_instance->s1_setuprsp_wait_timer = s1ap_register_eNB->s1_setuprsp_wait_timer;
new_instance->s1_setupreq_wait_timer = s1ap_register_eNB->s1_setupreq_wait_timer;
new_instance->s1_setupreq_count = s1ap_register_eNB->s1_setupreq_count;
new_instance->sctp_req_timer = s1ap_register_eNB->sctp_req_timer;
new_instance->sctp_req_count = s1ap_register_eNB->sctp_req_count;
new_instance->sctp_in_streams = s1ap_register_eNB->sctp_in_streams;
new_instance->sctp_out_streams = s1ap_register_eNB->sctp_out_streams;
new_instance->num_plmn = s1ap_register_eNB->num_plmn;
new_instance->default_drx = s1ap_register_eNB->default_drx;
/* Add the new instance to the list of eNB (meaningfull in virtual mode) */
@@ -216,8 +238,14 @@ void s1ap_eNB_handle_register_eNB(instance_t instance, s1ap_register_enb_req_t *
s1ap_register_eNB->eNB_id);
}
DevCheck(s1ap_register_eNB->nb_mme <= S1AP_MAX_NB_MME_IP_ADDRESS,
S1AP_MAX_NB_MME_IP_ADDRESS, s1ap_register_eNB->nb_mme, 0);
// DevCheck(s1ap_register_eNB->nb_mme <= S1AP_MAX_NB_MME_IP_ADDRESS,
// S1AP_MAX_NB_MME_IP_ADDRESS, s1ap_register_eNB->nb_mme, 0);
if( s1ap_register_eNB->nb_mme > S1AP_MAX_NB_MME_IP_ADDRESS )
{
S1AP_ERROR("Invalid MME number = %d\n ", s1ap_register_eNB->nb_mme);
s1ap_register_eNB->nb_mme = S1AP_MAX_NB_MME_IP_ADDRESS;
}
new_instance->s1ap_mme_nb = s1ap_register_eNB->nb_mme;
/* Trying to connect to provided list of MME ip address */
for (index = 0; index < s1ap_register_eNB->nb_mme; index++) {
@@ -249,28 +277,153 @@ void s1ap_eNB_handle_register_eNB(instance_t instance, s1ap_register_enb_req_t *
void s1ap_eNB_handle_sctp_association_resp(instance_t instance, sctp_new_association_resp_t *sctp_new_association_resp) {
s1ap_eNB_instance_t *instance_p;
s1ap_eNB_mme_data_t *s1ap_mme_data_p;
s1ap_eNB_ue_context_t *ue_p = NULL;
MessageDef *message_p = NULL;
uint32_t timer_kind = 0;
struct plmn_identity_s* plmnInfo;
struct served_group_id_s* groupInfo;
struct served_gummei_s* gummeiInfo;
struct mme_code_s* mmeCode;
int8_t cnt = 0;
unsigned enb_s1ap_id[20];
DevAssert(sctp_new_association_resp != NULL);
instance_p = s1ap_eNB_get_instance(instance);
DevAssert(instance_p != NULL);
s1ap_mme_data_p = s1ap_eNB_get_MME(instance_p, -1,
sctp_new_association_resp->ulp_cnx_id);
DevAssert(s1ap_mme_data_p != NULL);
if (sctp_new_association_resp->sctp_state != SCTP_STATE_ESTABLISHED) {
S1AP_WARN("Received unsuccessful result for SCTP association (%u), instance %d, cnx_id %u\n",
sctp_new_association_resp->sctp_state,
instance,
sctp_new_association_resp->ulp_cnx_id);
s1ap_handle_s1_setup_message(s1ap_mme_data_p, sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN);
return;
memset(enb_s1ap_id, 0, sizeof(enb_s1ap_id) );
if( s1ap_mme_data_p->timer_id != S1AP_TIMERID_INIT )
{
s1ap_timer_remove( s1ap_mme_data_p->timer_id );
s1ap_mme_data_p->timer_id = S1AP_TIMERID_INIT;
}
if( sctp_new_association_resp->sctp_state != SCTP_STATE_ESTABLISHED )
{
RB_FOREACH(ue_p, s1ap_ue_map, &instance_p->s1ap_ue_head)
{
if( ue_p->mme_ref == s1ap_mme_data_p )
{
enb_s1ap_id[cnt] = ue_p->eNB_ue_s1ap_id;
cnt++;
message_p = NULL;
message_p = itti_alloc_new_message(TASK_S1AP, S1AP_UE_CONTEXT_RELEASE_COMMAND);
if( message_p != NULL )
{
S1AP_UE_CONTEXT_RELEASE_COMMAND(message_p).eNB_ue_s1ap_id = ue_p->eNB_ue_s1ap_id;
if( itti_send_msg_to_task(TASK_RRC_ENB, ue_p->eNB_instance->instance, message_p) < 0 )
{
S1AP_ERROR("UE Context Release Command Transmission Failure: eNB_ue_s1ap_id=%d\n", ue_p->eNB_ue_s1ap_id);
}
}
else
{
S1AP_ERROR("Invalid message_p : eNB_ue_s1ap_id=%d\n", ue_p->eNB_ue_s1ap_id);
}
}
}
for( ; cnt > 0 ; )
{
cnt--;
s1ap_ue_context_release( instance, (uint32_t)enb_s1ap_id[cnt] );
}
s1ap_mme_data_p->mme_name = 0;
s1ap_mme_data_p->overload_state = S1AP_NO_OVERLOAD;
s1ap_mme_data_p->nextstream = 0;
s1ap_mme_data_p->in_streams = 0;
s1ap_mme_data_p->out_streams = 0;
s1ap_mme_data_p->assoc_id = -1;
while (!STAILQ_EMPTY(&s1ap_mme_data_p->served_gummei))
{
gummeiInfo = STAILQ_FIRST(&s1ap_mme_data_p->served_gummei);
STAILQ_REMOVE_HEAD(&s1ap_mme_data_p->served_gummei, next);
while (!STAILQ_EMPTY(&gummeiInfo->served_plmns))
{
plmnInfo = STAILQ_FIRST(&gummeiInfo->served_plmns);
STAILQ_REMOVE_HEAD(&gummeiInfo->served_plmns, next);
free(plmnInfo);
}
while (!STAILQ_EMPTY(&gummeiInfo->served_group_ids))
{
groupInfo = STAILQ_FIRST(&gummeiInfo->served_group_ids);
STAILQ_REMOVE_HEAD(&gummeiInfo->served_group_ids, next);
free(groupInfo);
}
while (!STAILQ_EMPTY(&gummeiInfo->mme_codes))
{
mmeCode = STAILQ_FIRST(&gummeiInfo->mme_codes);
STAILQ_REMOVE_HEAD(&gummeiInfo->mme_codes, next);
free(mmeCode);
}
free(gummeiInfo);
}
STAILQ_INIT(&s1ap_mme_data_p->served_gummei);
if( s1ap_mme_data_p->state == S1AP_ENB_STATE_DISCONNECTED )
{
if( (s1ap_mme_data_p->sctp_req_cnt <= instance_p->sctp_req_count) ||
(instance_p->sctp_req_count == 0xffff) )
{
timer_kind = s1ap_mme_data_p->cnx_id;
timer_kind = timer_kind | S1AP_MMEIND;
timer_kind = timer_kind | SCTP_REQ_WAIT;
if( s1ap_timer_setup( instance_p->sctp_req_timer, 0, TASK_S1AP, instance_p->instance,
timer_kind, S1AP_TIMER_ONE_SHOT, NULL, &s1ap_mme_data_p->timer_id) < 0 )
{
S1AP_ERROR("Timer Start NG(SCTP retransmission wait timer) : MME=%d\n",s1ap_mme_data_p->cnx_id);
s1ap_sctp_req( instance_p, s1ap_mme_data_p );
}
}
else
{
S1AP_ERROR("Retransmission count exceeded of SCTP : MME=%d\n",s1ap_mme_data_p->cnx_id);
}
}
else
{
S1AP_ERROR("SCTP disconnection reception : MME = %d\n",s1ap_mme_data_p->cnx_id);
if( (s1ap_mme_data_p->sctp_req_cnt <= instance_p->sctp_req_count) ||
(instance_p->sctp_req_count == 0xffff) )
{
s1ap_sctp_req( instance_p, s1ap_mme_data_p );
}
else
{
S1AP_ERROR("Retransmission count exceeded of SCTP : MME=%d\n",s1ap_mme_data_p->cnx_id);
}
s1ap_mme_data_p->state = S1AP_ENB_STATE_DISCONNECTED;
}
}
// if (sctp_new_association_resp->sctp_state != SCTP_STATE_ESTABLISHED) {
// S1AP_WARN("Received unsuccessful result for SCTP association (%u), instance %d, cnx_id %u\n",
// sctp_new_association_resp->sctp_state,
// instance,
// sctp_new_association_resp->ulp_cnx_id);
// s1ap_handle_s1_setup_message(s1ap_mme_data_p, sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN);
// return;
// }
else
{
/* Update parameters */
s1ap_mme_data_p->assoc_id = sctp_new_association_resp->assoc_id;
s1ap_mme_data_p->in_streams = sctp_new_association_resp->in_streams;
s1ap_mme_data_p->out_streams = sctp_new_association_resp->out_streams;
/* Prepare new S1 Setup Request */
s1ap_eNB_generate_s1_setup_request(instance_p, s1ap_mme_data_p);
s1ap_mme_data_p->s1_setupreq_cnt = 0;
s1ap_mme_data_p->sctp_req_cnt = 0;
if (s1ap_eNB_generate_s1_setup_request(instance_p, s1ap_mme_data_p) == -1) {
S1AP_ERROR("s1ap eNB generate s1 setup request failed\n");
return;
}
}
static
@@ -288,9 +441,102 @@ void s1ap_eNB_handle_sctp_data_ind(sctp_data_ind_t *sctp_data_ind) {
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
}
void s1ap_eNB_timer_expired(
instance_t instance,
s1ap_timer_has_expired_t *msg_p)
{
uint32_t timer_kind = 0;
int16_t line_ind = 0;
s1ap_eNB_mme_data_t *mme_desc_p = NULL;
uint32_t timer_ind = 0;
s1ap_eNB_instance_t *instance_p = NULL;
long timer_id = S1AP_TIMERID_INIT;
instance_p = s1ap_eNB_get_instance(instance);
timer_kind = msg_p->timer_kind;
line_ind = (int16_t)(timer_kind & S1AP_LINEIND);
timer_id = msg_p->timer_id;
if( (timer_kind & S1AP_MMEIND) == S1AP_MMEIND )
{
mme_desc_p = s1ap_eNB_get_MME(instance_p, -1, line_ind);
if(mme_desc_p != NULL)
{
if( timer_id == mme_desc_p->timer_id )
{
mme_desc_p->timer_id = S1AP_TIMERID_INIT;
timer_ind = timer_kind & S1AP_TIMERIND;
switch(timer_ind)
{
case S1_SETRSP_WAIT:
{
if( (instance_p->s1_setupreq_count >= mme_desc_p->s1_setupreq_cnt) ||
(instance_p->s1_setupreq_count == 0xffff) )
{
s1ap_eNB_generate_s1_setup_request( instance_p, mme_desc_p );
}
else
{
S1AP_ERROR("Retransmission count exceeded of S1 SETUP REQUEST : MME=%d\n",line_ind);
}
break;
}
case S1_SETREQ_WAIT:
{
if( (instance_p->s1_setupreq_count >= mme_desc_p->s1_setupreq_cnt) ||
(instance_p->s1_setupreq_count == 0xffff) )
{
s1ap_eNB_generate_s1_setup_request( instance_p, mme_desc_p );
}
else
{
S1AP_ERROR("Retransmission count exceeded of S1 SETUP REQUEST : MME=%d\n",line_ind);
}
break;
}
case SCTP_REQ_WAIT:
{
if( (instance_p->sctp_req_count >= mme_desc_p->sctp_req_cnt) ||
(instance_p->sctp_req_count == 0xffff) )
{
s1ap_sctp_req( instance_p, mme_desc_p );
}
else
{
S1AP_ERROR("Retransmission count exceeded of SCTP : MME=%d\n",line_ind);
}
break;
}
default:
{
S1AP_WARN("Invalid Timer indication\n");
break;
}
}
}
else
{
S1AP_DEBUG("Unmatch timer id\n");
return;
}
}
else
{
S1AP_WARN("Not applicable MME detected : connection id = %d\n", line_ind);
return;
}
}
else
{
}
return;
}
void s1ap_eNB_init(void) {
S1AP_DEBUG("Starting S1AP layer\n");
s1ap_eNB_prepare_internal_data();
s1ap_timer_init();
itti_mark_task_ready(TASK_S1AP);
MSC_START_USE();
}
@@ -411,6 +657,13 @@ void *s1ap_eNB_process_itti_msg(void *notUsed) {
}
break;
case TIMER_HAS_EXPIRED:
{
s1ap_eNB_timer_expired(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&TIMER_HAS_EXPIRED(received_msg));
}
break;
default:
S1AP_ERROR("Received unhandled message: %d:%s\n",
ITTI_MSG_ID(received_msg), ITTI_MSG_NAME(received_msg));
@@ -451,6 +704,7 @@ static int s1ap_eNB_generate_s1_setup_request(
uint8_t *buffer = NULL;
uint32_t len = 0;
int ret = 0;
uint32_t timer_kind = 0;
DevAssert(instance_p != NULL);
DevAssert(s1ap_mme_data_p != NULL);
s1ap_mme_data_p->state = S1AP_ENB_STATE_WAITING;
@@ -525,6 +779,17 @@ static int s1ap_eNB_generate_s1_setup_request(
return -1;
}
timer_kind = s1ap_mme_data_p->cnx_id;
timer_kind = timer_kind | S1AP_MMEIND;
timer_kind = timer_kind | S1_SETRSP_WAIT;
if( s1ap_timer_setup(instance_p->s1_setuprsp_wait_timer, 0, TASK_S1AP, instance_p->instance, timer_kind, S1AP_TIMER_ONE_SHOT,
NULL, &s1ap_mme_data_p->timer_id) < 0 )
{
S1AP_ERROR("Timer Start NG(S1 Setup Response) : MME=%d\n",s1ap_mme_data_p->cnx_id);
}
s1ap_mme_data_p->s1_setupreq_cnt++;
/* Non UE-Associated signalling -> stream = 0 */
s1ap_eNB_itti_send_sctp_data_req(instance_p->instance, s1ap_mme_data_p->assoc_id, buffer, len, 0);
return ret;
@@ -533,3 +798,64 @@ static int s1ap_eNB_generate_s1_setup_request(
static int s1ap_sctp_req(s1ap_eNB_instance_t *instance_p,
s1ap_eNB_mme_data_t *s1ap_mme_data_p)
{
MessageDef *message_p = NULL;
sctp_new_association_req_t *sctp_new_association_req_p = NULL;
if( instance_p == NULL )
{
S1AP_ERROR("Invalid instance_p\n");
return -1;
}
message_p = itti_alloc_new_message(TASK_S1AP, SCTP_NEW_ASSOCIATION_REQ);
sctp_new_association_req_p = &message_p->ittiMsg.sctp_new_association_req;
sctp_new_association_req_p->port = S1AP_PORT_NUMBER;
sctp_new_association_req_p->ppid = S1AP_SCTP_PPID;
sctp_new_association_req_p->in_streams = instance_p->sctp_in_streams;
sctp_new_association_req_p->out_streams = instance_p->sctp_out_streams;
sctp_new_association_req_p->ulp_cnx_id = s1ap_mme_data_p->cnx_id;
if( s1ap_mme_data_p->mme_ip_address.ipv4 != 0 )
{
memcpy(&sctp_new_association_req_p->remote_address,
&s1ap_mme_data_p->mme_ip_address,
sizeof(net_ip_address_t));
if( instance_p->enb_ip_address.ipv4 != 0 )
{
memcpy(&sctp_new_association_req_p->local_address,
&instance_p->enb_ip_address,
sizeof(net_ip_address_t));
}
else
{
S1AP_ERROR("Invalid IP Address Format V4(MME):V6\n");
return -1;
}
}
else
{
memcpy(&sctp_new_association_req_p->remote_address,
&s1ap_mme_data_p->mme_ip_address,
sizeof(net_ip_address_t));
if( instance_p->enb_ip_address.ipv6 != 0 )
{
memcpy(&sctp_new_association_req_p->local_address,
&instance_p->enb_ip_address,
sizeof(net_ip_address_t));
}
else
{
S1AP_ERROR("Invalid IP Address Format V6(MME):V4\n");
return -1;
}
}
itti_send_msg_to_task(TASK_SCTP, instance_p->instance, message_p);
s1ap_mme_data_p->sctp_req_cnt++;
return 0;
}