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Commit ec3de013 authored by Robert Schmidt's avatar Robert Schmidt
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Merge remote-tracking branch 'origin/nr-pdcp-reestablishment-procedure' into integration_2023_w47

parents 1b1c8e22 9e46a6a6
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Showing with 160 additions and 116 deletions
openair2/LAYER2/nr_pdcp/nr_pdcp_entity.c
View file @ ec3de013
......@@ -88,7 +88,6 @@ static void nr_pdcp_entity_recv_pdu(nr_pdcp_entity_t *entity,
entity->stats.rxpdu_dd_pkts++;
entity->stats.rxpdu_dd_bytes += size;
return;
}
......@@ -120,7 +119,7 @@ static void nr_pdcp_entity_recv_pdu(nr_pdcp_entity_t *entity,
entity->stats.rxpdu_dd_pkts++;
entity->stats.rxpdu_dd_bytes += size;
return;
}
}
......@@ -130,7 +129,6 @@ static void nr_pdcp_entity_recv_pdu(nr_pdcp_entity_t *entity,
entity->stats.rxpdu_dd_pkts++;
entity->stats.rxpdu_dd_bytes += size;
return;
}
......@@ -158,7 +156,6 @@ static void nr_pdcp_entity_recv_pdu(nr_pdcp_entity_t *entity,
entity->stats.txsdu_pkts++;
entity->stats.txsdu_bytes += cur->size;
nr_pdcp_free_sdu(cur);
count++;
}
......@@ -224,7 +221,7 @@ static int nr_pdcp_entity_process_sdu(nr_pdcp_entity_t *entity,
memcpy(buf + header_size, buffer, size);
if (entity->has_integrity){
if (entity->has_integrity) {
uint8_t integrity[4] = {0};
entity->integrity(entity->integrity_context,
integrity,
......@@ -232,13 +229,12 @@ static int nr_pdcp_entity_process_sdu(nr_pdcp_entity_t *entity,
entity->rb_id, count, entity->is_gnb ? 1 : 0);
memcpy((unsigned char *)buf + header_size + size, integrity, 4);
}
} else if (integrity_size == 4) {
// set MAC-I to 0 for SRBs with integrity not active
else if (integrity_size == 4)
memset(buf + header_size + size, 0, 4);
}
if (entity->has_ciphering && (entity->is_gnb || entity->security_mode_completed)){
if (entity->has_ciphering && (entity->is_gnb || entity->security_mode_completed)) {
entity->cipher(entity->security_context,
(unsigned char *)buf + header_size, size + integrity_size,
entity->rb_id, count, entity->is_gnb ? 1 : 0);
......@@ -339,6 +335,8 @@ static void check_t_reordering(nr_pdcp_entity_t *entity)
cur->buffer, cur->size);
entity->rx_list = cur->next;
entity->rx_size -= cur->size;
entity->stats.txsdu_pkts++;
entity->stats.txsdu_bytes += cur->size;
nr_pdcp_free_sdu(cur);
}
......@@ -350,6 +348,8 @@ static void check_t_reordering(nr_pdcp_entity_t *entity)
cur->buffer, cur->size);
entity->rx_list = cur->next;
entity->rx_size -= cur->size;
entity->stats.txsdu_pkts++;
entity->stats.txsdu_bytes += cur->size;
nr_pdcp_free_sdu(cur);
count++;
}
......@@ -362,7 +362,7 @@ static void check_t_reordering(nr_pdcp_entity_t *entity)
}
}
void nr_pdcp_entity_set_time(struct nr_pdcp_entity_t *entity, uint64_t now)
static void nr_pdcp_entity_set_time(struct nr_pdcp_entity_t *entity, uint64_t now)
{
entity->t_current = now;
......@@ -384,7 +384,7 @@ static void deliver_all_sdus(nr_pdcp_entity_t *entity)
}
}
void nr_pdcp_entity_suspend(nr_pdcp_entity_t *entity)
static void nr_pdcp_entity_suspend(nr_pdcp_entity_t *entity)
{
entity->tx_next = 0;
if (entity->t_reordering_start != 0) {
......@@ -395,19 +395,71 @@ void nr_pdcp_entity_suspend(nr_pdcp_entity_t *entity)
entity->rx_deliv = 0;
}
void nr_pdcp_entity_release(nr_pdcp_entity_t *entity)
{
deliver_all_sdus(entity);
}
void nr_pdcp_entity_delete(nr_pdcp_entity_t *entity)
static void free_rx_list(nr_pdcp_entity_t *entity)
{
nr_pdcp_sdu_t *cur = entity->rx_list;
while (cur != NULL) {
nr_pdcp_sdu_t *next = cur->next;
entity->stats.rxpdu_dd_pkts++;
entity->stats.rxpdu_dd_bytes += cur->size;
nr_pdcp_free_sdu(cur);
cur = next;
}
entity->rx_list = NULL;
entity->rx_size = 0;
}
static void nr_pdcp_entity_reestablish_drb_am(nr_pdcp_entity_t *entity)
{
/* transmitting entity procedures */
/* todo: deal with ciphering/integrity algos and keys */
/* receiving entity procedures */
/* todo: deal with ciphering/integrity algos and keys */
}
static void nr_pdcp_entity_reestablish_drb_um(nr_pdcp_entity_t *entity)
{
/* transmitting entity procedures */
entity->tx_next = 0;
/* todo: deal with ciphering/integrity algos and keys */
/* receiving entity procedures */
/* deliver all SDUs if t_reordering is running */
if (entity->t_reordering_start != 0)
deliver_all_sdus(entity);
/* stop t_reordering */
entity->t_reordering_start = 0;
/* set rx_next and rx_deliv to the initial value */
entity->rx_next = 0;
entity->rx_deliv = 0;
/* todo: deal with ciphering/integrity algos and keys */
}
static void nr_pdcp_entity_reestablish_srb(nr_pdcp_entity_t *entity)
{
/* transmitting entity procedures */
entity->tx_next = 0;
/* todo: deal with ciphering/integrity algos and keys */
/* receiving entity procedures */
free_rx_list(entity);
/* stop t_reordering */
entity->t_reordering_start = 0;
/* set rx_next and rx_deliv to the initial value */
entity->rx_next = 0;
entity->rx_deliv = 0;
/* todo: deal with ciphering/integrity algos and keys */
}
static void nr_pdcp_entity_release(nr_pdcp_entity_t *entity)
{
deliver_all_sdus(entity);
}
static void nr_pdcp_entity_delete(nr_pdcp_entity_t *entity)
{
free_rx_list(entity);
if (entity->free_security != NULL)
entity->free_security(entity->security_context);
if (entity->free_integrity != NULL)
......@@ -462,6 +514,18 @@ nr_pdcp_entity_t *new_nr_pdcp_entity(
ret->release_entity = nr_pdcp_entity_release;
ret->suspend_entity = nr_pdcp_entity_suspend;
switch (type) {
case NR_PDCP_DRB_AM:
ret->reestablish_entity = nr_pdcp_entity_reestablish_drb_am;
break;
case NR_PDCP_DRB_UM:
ret->reestablish_entity = nr_pdcp_entity_reestablish_drb_um;
break;
case NR_PDCP_SRB:
ret->reestablish_entity = nr_pdcp_entity_reestablish_srb;
break;
}
ret->get_stats = nr_pdcp_entity_get_stats;
ret->deliver_sdu = deliver_sdu;
ret->deliver_sdu_data = deliver_sdu_data;
......
openair2/LAYER2/nr_pdcp/nr_pdcp_entity.h
View file @ ec3de013
......@@ -78,6 +78,7 @@ typedef struct nr_pdcp_entity_t {
void (*delete_entity)(struct nr_pdcp_entity_t *entity);
void (*release_entity)(struct nr_pdcp_entity_t *entity);
void (*suspend_entity)(struct nr_pdcp_entity_t *entity);
void (*reestablish_entity)(struct nr_pdcp_entity_t *entity);
void (*get_stats)(struct nr_pdcp_entity_t *entity, nr_pdcp_statistics_t *out);
/* set_security: pass -1 to integrity_algorithm / ciphering_algorithm
......@@ -123,7 +124,7 @@ typedef struct nr_pdcp_entity_t {
uint64_t t_current;
/* timers (stores the ms of activation, 0 means not active) */
int t_reordering_start;
uint64_t t_reordering_start;
/* security */
int has_ciphering;
......
openair2/LAYER2/nr_pdcp/nr_pdcp_oai_api.c
View file @ ec3de013
......@@ -64,6 +64,25 @@ uint8_t proto_agent_flag = 0;
static ngran_node_t node_type;
nr_pdcp_entity_t *nr_pdcp_get_rb(nr_pdcp_ue_t *ue, int rb_id, bool srb_flag)
{
nr_pdcp_entity_t *rb;
if (srb_flag) {
if (rb_id < 1 || rb_id > 2)
rb = NULL;
else
rb = ue->srb[rb_id - 1];
} else {
if (rb_id < 1 || rb_id > MAX_DRBS_PER_UE)
rb = NULL;
else
rb = ue->drb[rb_id - 1];
}
return rb;
}
/****************************************************************************/
/* rlc_data_req queue - begin */
/****************************************************************************/
......@@ -263,24 +282,12 @@ static void do_pdcp_data_ind(
nr_pdcp_manager_lock(nr_pdcp_ue_manager);
ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, rntiMaybeUEid);
if (srb_flagP == 1) {
if (rb_id < 1 || rb_id > 2)
rb = NULL;
else
rb = ue->srb[rb_id - 1];
} else {
if (rb_id < 1 || rb_id > MAX_DRBS_PER_UE)
rb = NULL;
else
rb = ue->drb[rb_id - 1];
}
rb = nr_pdcp_get_rb(ue, rb_id, srb_flagP);
if (rb != NULL) {
rb->recv_pdu(rb, (char *)sdu_buffer->data, sdu_buffer_size);
} else {
LOG_E(PDCP, "%s:%d:%s: no RB found (rb_id %ld, srb_flag %d)\n",
__FILE__, __LINE__, __FUNCTION__, rb_id, srb_flagP);
LOG_E(PDCP, "pdcp_data_ind: no RB found (rb_id %ld, srb_flag %d)\n", rb_id, srb_flagP);
}
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
......@@ -776,14 +783,8 @@ void add_srb(int is_gnb,
nr_pdcp_manager_lock(nr_pdcp_ue_manager);
ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, rntiMaybeUEid);
if (ue->srb[srb_id-1] != NULL) {
LOG_E(PDCP,
"%s:%d:%s: warning SRB %d already exist for UE ID/RNTI %ld, do nothing\n",
__FILE__,
__LINE__,
__FUNCTION__,
srb_id,
rntiMaybeUEid);
if (nr_pdcp_get_rb(ue, srb_id, true) != NULL) {
LOG_E(PDCP, "warning SRB %d already exist for UE ID/RNTI %ld, do nothing\n", srb_id, rntiMaybeUEid);
} else {
pdcp_srb = new_nr_pdcp_entity(NR_PDCP_SRB, is_gnb, srb_id,
0, false, false, // sdap parameters
......@@ -878,8 +879,8 @@ void add_drb(int is_gnb,
nr_pdcp_manager_lock(nr_pdcp_ue_manager);
ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, rntiMaybeUEid);
if (ue->drb[drb_id-1] != NULL) {
LOG_W(PDCP, "%s:%d:%s: warning DRB %d already exist for UE ID/RNTI %ld, do nothing\n", __FILE__, __LINE__, __FUNCTION__, drb_id, rntiMaybeUEid);
if (nr_pdcp_get_rb(ue, drb_id, false) != NULL) {
LOG_W(PDCP, "warning DRB %d already exist for UE ID/RNTI %ld, do nothing\n", drb_id, rntiMaybeUEid);
} else {
pdcp_drb = new_nr_pdcp_entity(NR_PDCP_DRB_AM, is_gnb, drb_id, pdusession_id,
has_sdap_rx, has_sdap_tx, deliver_sdu_drb, ue,
......@@ -997,11 +998,10 @@ void nr_pdcp_config_set_security(ue_id_t ue_id,
/* TODO: proper handling of DRBs, for the moment only SRBs are handled */
if (rb_id >= 1 && rb_id <= 2) {
rb = ue->srb[rb_id - 1];
rb = nr_pdcp_get_rb(ue, rb_id, true);
if (rb == NULL) {
LOG_E(PDCP, "%s:%d:%s: no SRB found (ue_id %ld, rb_id %ld)\n", __FILE__, __LINE__, __FUNCTION__, ue_id, rb_id);
LOG_E(PDCP, "no SRB found (ue_id %ld, rb_id %ld)\n", ue_id, rb_id);
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
return;
}
......@@ -1011,10 +1011,6 @@ void nr_pdcp_config_set_security(ue_id_t ue_id,
rb->set_security(rb, integrity_algorithm, (char *)kRRCint_pP,
ciphering_algorithm, (char *)kRRCenc_pP);
rb->security_mode_completed = false;
} else {
LOG_E(PDCP, "%s:%d:%s: TODO\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
}
......@@ -1034,14 +1030,10 @@ bool nr_pdcp_data_req_srb(ue_id_t ue_id,
nr_pdcp_manager_lock(nr_pdcp_ue_manager);
ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, ue_id);
if (rb_id < 1 || rb_id > 2)
rb = NULL;
else
rb = ue->srb[rb_id - 1];
rb = nr_pdcp_get_rb(ue, rb_id, true);
if (rb == NULL) {
LOG_E(PDCP, "%s:%d:%s: no SRB found (ue_id %ld, rb_id %ld)\n", __FILE__, __LINE__, __FUNCTION__, ue_id, rb_id);
LOG_E(PDCP, "no SRB found (ue_id %ld, rb_id %ld)\n", ue_id, rb_id);
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
return 0;
}
......@@ -1062,9 +1054,10 @@ void nr_pdcp_suspend_srb(ue_id_t ue_id, int srb_id)
{
nr_pdcp_manager_lock(nr_pdcp_ue_manager);
nr_pdcp_ue_t *ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, ue_id);
nr_pdcp_entity_t *srb = ue->srb[srb_id - 1];
nr_pdcp_entity_t *srb = nr_pdcp_get_rb(ue, srb_id, true);
if (srb == NULL) {
LOG_E(PDCP, "Trying to susbend SRB with ID %d but it is not established\n", srb_id);
LOG_E(PDCP, "Trying to suspend SRB with ID %d but it is not established\n", srb_id);
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
return;
}
srb->suspend_entity(srb);
......@@ -1075,9 +1068,10 @@ void nr_pdcp_suspend_drb(ue_id_t ue_id, int drb_id)
{
nr_pdcp_manager_lock(nr_pdcp_ue_manager);
nr_pdcp_ue_t *ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, ue_id);
nr_pdcp_entity_t *drb = ue->drb[drb_id - 1];
nr_pdcp_entity_t *drb = nr_pdcp_get_rb(ue, drb_id, false);
if (drb == NULL) {
LOG_E(PDCP, "Trying to susbend DRB with ID %d but it is not established\n", drb_id);
LOG_E(PDCP, "Trying to suspend DRB with ID %d but it is not established\n", drb_id);
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
return;
}
drb->suspend_entity(drb);
......@@ -1088,7 +1082,12 @@ void nr_pdcp_reconfigure_srb(ue_id_t ue_id, int srb_id, long t_Reordering)
{
nr_pdcp_manager_lock(nr_pdcp_ue_manager);
nr_pdcp_ue_t *ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, ue_id);
nr_pdcp_entity_t *srb = ue->srb[srb_id - 1];
nr_pdcp_entity_t *srb = nr_pdcp_get_rb(ue, srb_id, true);
if (srb == NULL) {
LOG_E(PDCP, "Trying to reconfigure SRB with ID %d but it is not established\n", srb_id);
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
return;
}
int decoded_t_reordering = decode_t_reordering(t_Reordering);
srb->t_reordering = decoded_t_reordering;
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
......@@ -1102,7 +1101,12 @@ void nr_pdcp_reconfigure_drb(ue_id_t ue_id, int drb_id, long t_Reordering)
*/
nr_pdcp_manager_lock(nr_pdcp_ue_manager);
nr_pdcp_ue_t *ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, ue_id);
nr_pdcp_entity_t *drb = ue->drb[drb_id - 1];
nr_pdcp_entity_t *drb = nr_pdcp_get_rb(ue, drb_id, false);
if (drb == NULL) {
LOG_E(PDCP, "Trying to reconfigure DRB with ID %d but it is not established\n", drb_id);
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
return;
}
int decoded_t_reordering = decode_t_reordering(t_Reordering);
drb->t_reordering = decoded_t_reordering;
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
......@@ -1136,36 +1140,21 @@ void nr_pdcp_release_drb(ue_id_t ue_id, int drb_id)
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
}
void nr_pdcp_reestablishment(ue_id_t ue_id)
void nr_pdcp_reestablishment(ue_id_t ue_id, int rb_id, bool srb_flag)
{
// TODO implement this on a per RB basis following TS 38.323 Sec 5.1.2
nr_pdcp_ue_t *ue;
nr_pdcp_entity_t *rb;
nr_pdcp_manager_lock(nr_pdcp_ue_manager);
nr_pdcp_ue_t *ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, ue_id);
if (ue == NULL) {
LOG_E(PDCP, "Cannot find PDCP entity for UE %lx\n", ue_id);
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
return;
}
ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, ue_id);
rb = nr_pdcp_get_rb(ue, rb_id, srb_flag);
for (int i = 0; i < 3; i++) {
nr_pdcp_entity_t *srb = ue->srb[i];
if (srb != NULL) {
srb->tx_next = 0;
srb->rx_next = 0;
srb->rx_deliv = 0;
srb->rx_reord = 0;
}
if (rb != NULL) {
rb->reestablish_entity(rb);
} else {
LOG_W(PDCP, "UE %4.4lx cannot re-establish RB %d (is_srb %d), RB not found\n", ue_id, rb_id, srb_flag);
}
for (int i = 0; i < MAX_DRBS_PER_UE; i++) {
nr_pdcp_entity_t *drb = ue->drb[i];
if (drb != NULL) {
// drb->tx_next = 0; // Should continue from the previous value
drb->rx_next = 0;
//drb->rx_deliv = 0; // should continue from the previous value
drb->rx_reord = 0;
}
}
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
}
......@@ -1200,14 +1189,10 @@ bool nr_pdcp_data_req_drb(protocol_ctxt_t *ctxt_pP,
nr_pdcp_manager_lock(nr_pdcp_ue_manager);
ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, ue_id);
if (rb_id < 1 || rb_id > MAX_DRBS_PER_UE)
rb = NULL;
else
rb = ue->drb[rb_id - 1];
rb = nr_pdcp_get_rb(ue, rb_id, false);
if (rb == NULL) {
LOG_E(PDCP, "%s:%d:%s: no DRB found (ue_id %ld, rb_id %ld)\n", __FILE__, __LINE__, __FUNCTION__, ue_id, rb_id);
LOG_E(PDCP, "no DRB found (ue_id %lx, rb_id %ld)\n", ue_id, rb_id);
nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
return 0;
}
......@@ -1309,18 +1294,7 @@ bool nr_pdcp_get_statistics(ue_id_t ue_id, int srb_flag, int rb_id, nr_pdcp_stat
nr_pdcp_manager_lock(nr_pdcp_ue_manager);
ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, ue_id);
if (srb_flag == 1) {
if (rb_id < 1 || rb_id > 2)
rb = NULL;
else
rb = ue->srb[rb_id - 1];
} else {
if (rb_id < 1 || rb_id > 5)
rb = NULL;
else
rb = ue->drb[rb_id - 1];
}
rb = nr_pdcp_get_rb(ue, rb_id, srb_flag);
if (rb != NULL) {
rb->get_stats(rb, out);
......
openair2/LAYER2/nr_pdcp/nr_pdcp_oai_api.h
View file @ ec3de013
......@@ -64,7 +64,7 @@ void add_drb(int is_gnb,
void nr_DRB_preconfiguration(ue_id_t crntiMaybeUEid);
bool nr_pdcp_remove_UE(ue_id_t ue_id);
void nr_pdcp_reestablishment(ue_id_t ue_id);
void nr_pdcp_reestablishment(ue_id_t ue_id, int rb_id, bool srb_flag);
void nr_pdcp_suspend_srb(ue_id_t ue_id, int srb_id);
void nr_pdcp_suspend_drb(ue_id_t ue_id, int drb_id);
......
openair2/RRC/NR/rrc_gNB.c
View file @ ec3de013
......@@ -1046,11 +1046,16 @@ static void rrc_gNB_generate_RRCReestablishment(rrc_gNB_ue_context_t *ue_context
for (int srb_id = 1; srb_id < maxSRBs; srb_id++) {
if (ue_p->Srb[srb_id].Active) {
nr_pdcp_config_set_security(ue_p->rrc_ue_id, srb_id, security_mode, kRRCenc, kRRCint, kUPenc);
// TODO: should send E1 UE Bearer Modification with PDCP Reestablishment flag
nr_pdcp_reestablishment(ue_p->rrc_ue_id, srb_id, true);
}
}
// TODO: should send E1 UE Bearer Modification with PDCP Reestablishment flag
nr_pdcp_reestablishment(ue_p->rrc_ue_id);
for (int drb_id = 1; drb_id <= MAX_DRBS_PER_UE; drb_id++) {
if (ue_p->established_drbs[drb_id - 1].status != DRB_INACTIVE)
nr_pdcp_reestablishment(ue_p->rrc_ue_id, drb_id, false);
}
f1_ue_data_t ue_data = cu_get_f1_ue_data(ue_p->rrc_ue_id);
RETURN_IF_INVALID_ASSOC_ID(ue_data);
......
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