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bugfix CU/DU: use correct IP address for GTP-U

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Not only the teid is received from the DU but also the IP address. We
have to use it too.

Also, don't connect the UDP socket. The parameter remote_s_address in the
configuration file must not be used, at least not for gtp-u because the
IP address is received from the DU (plus for later, for multiple DUs, it
won't work at all).
This commit is contained in:
Cedric Roux
2023-01-09 15:19:07 +01:00
parent 1a0c0cd1c9
commit 551aee172a
4 changed files with 24 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair2/F1AP/f1ap_cu_task.c
+3 -5
View File
@@ -41,12 +41,10 @@
//Fixme: Uniq dirty DU instance, by global var, datamodel need better management
instance_t CUuniqInstance=0;
static instance_t cu_task_create_gtpu_instance_to_du(eth_params_t *IPaddrs) {
static instance_t cu_task_create_gtpu_instance(eth_params_t *IPaddrs) {
openAddr_t tmp= {0};
strncpy(tmp.originHost, IPaddrs->my_addr, sizeof(tmp.originHost)-1);
strncpy(tmp.destinationHost, IPaddrs->remote_addr, sizeof(tmp.destinationHost)-1);
sprintf(tmp.originService, "%d", IPaddrs->my_portd);
sprintf(tmp.destinationService, "%d", IPaddrs->remote_portd);
sprintf(tmp.originService, "%d", IPaddrs->my_portd);
return gtpv1Init(tmp);
}
@@ -59,7 +57,7 @@ static void cu_task_handle_sctp_association_ind(instance_t instance, sctp_new_as
f1ap_cu_data->sctp_in_streams = sctp_new_association_ind->in_streams;
f1ap_cu_data->sctp_out_streams = sctp_new_association_ind->out_streams;
f1ap_cu_data->default_sctp_stream_id = 0;
getCxt(CUtype, instance)->gtpInst=cu_task_create_gtpu_instance_to_du(IPaddrs);
getCxt(CUtype, instance)->gtpInst=cu_task_create_gtpu_instance(IPaddrs);
AssertFatal(getCxt(CUtype, instance)->gtpInst>0,"Failed to create CU F1-U UDP listener");
// Fixme: fully inconsistent instances management
// dirty global var is a bad fix
openair2/F1AP/f1ap_cu_ue_context_management.c
+13 -17
View File
@@ -510,18 +510,15 @@ int CU_send_UE_CONTEXT_SETUP_REQUEST(instance_t instance,
/* 12.1.3 uLUPTNLInformation_ToBeSetup_List */
for (int j = 0; j < f1ap_ue_context_setup_req->drbs_to_be_setup[i].up_ul_tnl_length; j++) {
/*Use a dummy teid for the outgoing GTP-U tunnel (DU) which will be updated once we get the UE context setup response from the DU*/
transport_layer_addr_t addr;
int sz=sizeof(f1ap_ue_context_setup_req->drbs_to_be_setup[i].up_dl_tnl[0].tl_address);
memcpy(addr.buffer,&f1ap_ue_context_setup_req->drbs_to_be_setup[i].up_dl_tnl[0].tl_address, sz);
addr.length = sz*8;
/* Use a dummy address and teid for the outgoing GTP-U tunnel (DU) which will be updated once we get the UE context setup response from the DU */
transport_layer_addr_t addr = { length: 32, buffer: { 0 } };
f1ap_ue_context_setup_req->drbs_to_be_setup[i].up_ul_tnl[j].teid = newGtpuCreateTunnel(getCxt(CUtype, instance)->gtpInst,
f1ap_ue_context_setup_req->rnti,
f1ap_ue_context_setup_req->drbs_to_be_setup[i].drb_id,
f1ap_ue_context_setup_req->drbs_to_be_setup[i].drb_id,
0xFFFF, // We will set the right value from DU answer
-1, // no qfi
addr,
addr, // We will set the right value from DU answer
f1ap_ue_context_setup_req->drbs_to_be_setup[i].up_dl_tnl[0].port,
cu_f1u_data_req,
NULL);
@@ -700,10 +697,11 @@ int CU_handle_UE_CONTEXT_SETUP_RESPONSE(instance_t instance,
F1AP_GTPTunnel_t *dl_up_tnl0 = dl_up_tnl_info_p->dLUPTNLInformation.choice.gTPTunnel;
BIT_STRING_TO_TRANSPORT_LAYER_ADDRESS_IPv4(&dl_up_tnl0->transportLayerAddress, drb_p->up_dl_tnl[0].tl_address);
OCTET_STRING_TO_INT32(&dl_up_tnl0->gTP_TEID, drb_p->up_dl_tnl[0].teid);
GtpuUpdateTunnelOutgoingTeid(getCxt(CUtype, instance)->gtpInst,
f1ap_ue_context_setup_resp->rnti,
(ebi_t)drbs_setup_item_p->dRBID,
drb_p->up_dl_tnl[0].teid);
GtpuUpdateTunnelOutgoingAddressAndTeid(getCxt(CUtype, instance)->gtpInst,
f1ap_ue_context_setup_resp->rnti,
(ebi_t)drbs_setup_item_p->dRBID,
drb_p->up_dl_tnl[0].tl_address,
drb_p->up_dl_tnl[0].teid);
}
}
@@ -1478,11 +1476,8 @@ int CU_send_UE_CONTEXT_MODIFICATION_REQUEST(instance_t instance, f1ap_ue_context
/* 12.1.3 uLUPTNLInformation_ToBeSetup_List */
for (int j = 0; j < f1ap_ue_context_modification_req->drbs_to_be_setup[i].up_ul_tnl_length; j++) {
/*Use a dummy teid for the outgoing GTP-U tunnel (DU) which will be updated once we get the UE context setup response from the DU*/
transport_layer_addr_t addr;
int sz=sizeof(f1ap_ue_context_modification_req->drbs_to_be_setup[i].up_dl_tnl[0].tl_address);
memcpy(addr.buffer,&f1ap_ue_context_modification_req->drbs_to_be_setup[i].up_dl_tnl[0].tl_address, sz);
addr.length = sz*8;
/* Use a dummy address and teid for the outgoing GTP-U tunnel (DU) which will be updated once we get the UE context modification response from the DU */
transport_layer_addr_t addr = { length: 32, buffer: { 0 } };
f1ap_ue_context_modification_req->drbs_to_be_setup[i].up_ul_tnl[j].teid = newGtpuCreateTunnel(getCxt(CUtype, instance)->gtpInst,
f1ap_ue_context_modification_req->rnti,
@@ -1490,7 +1485,7 @@ int CU_send_UE_CONTEXT_MODIFICATION_REQUEST(instance_t instance, f1ap_ue_context
f1ap_ue_context_modification_req->drbs_to_be_setup[i].drb_id,
0xFFFF, // We will set the right value from DU answer
-1, // no qfi
addr,
addr, // We will set the right value from DU answer
f1ap_ue_context_modification_req->drbs_to_be_setup[i].up_dl_tnl[0].port,
cu_f1u_data_req,
NULL);
@@ -1702,9 +1697,10 @@ int CU_handle_UE_CONTEXT_MODIFICATION_RESPONSE(instance_t instance,
F1AP_GTPTunnel_t *dl_up_tnl0 = dl_up_tnl_info_p->dLUPTNLInformation.choice.gTPTunnel;
BIT_STRING_TO_TRANSPORT_LAYER_ADDRESS_IPv4(&dl_up_tnl0->transportLayerAddress, drb_p->up_dl_tnl[0].tl_address);
OCTET_STRING_TO_INT32(&dl_up_tnl0->gTP_TEID, drb_p->up_dl_tnl[0].teid);
GtpuUpdateTunnelOutgoingTeid(getCxt(CUtype, instance)->gtpInst,
GtpuUpdateTunnelOutgoingAddressAndTeid(getCxt(CUtype, instance)->gtpInst,
f1ap_ue_context_modification_resp->rnti,
(ebi_t)drbs_setupmod_item_p->dRBID,
drb_p->up_dl_tnl[0].tl_address,
drb_p->up_dl_tnl[0].teid);
}
}
openair3/ocp-gtpu/gtp_itf.cpp
+3 -2
View File
@@ -552,7 +552,7 @@ instance_t gtpv1Init(openAddr_t context) {
return id;
}
void GtpuUpdateTunnelOutgoingTeid(instance_t instance, ue_id_t ue_id, ebi_t bearer_id, teid_t newOutgoingTeid) {
void GtpuUpdateTunnelOutgoingAddressAndTeid(instance_t instance, ue_id_t ue_id, ebi_t bearer_id, in_addr_t newOutgoingAddr, teid_t newOutgoingTeid) {
pthread_mutex_lock(&globGtp.gtp_lock);
getInstRetVoid(compatInst(instance));
getUeRetVoid(inst, ue_id);
@@ -565,8 +565,9 @@ void GtpuUpdateTunnelOutgoingTeid(instance_t instance, ue_id_t ue_id, ebi_t bear
return;
}
ptr2->second.outgoing_ip_addr = newOutgoingAddr;
ptr2->second.teid_outgoing = newOutgoingTeid;
LOG_I(GTPU, "[%ld] Tunnel Outgoing TEID updated to %x \n", instance, ptr2->second.teid_outgoing);
LOG_I(GTPU, "[%ld] Tunnel Outgoing TEID updated to %x and address to %x\n", instance, ptr2->second.teid_outgoing, ptr2->second.outgoing_ip_addr);
pthread_mutex_unlock(&globGtp.gtp_lock);
return;
}
openair3/ocp-gtpu/gtp_itf.h
+5 -4
View File
@@ -92,10 +92,11 @@ extern "C" {
gtpCallback callBack,
gtpCallbackSDAP callBackSDAP);
void GtpuUpdateTunnelOutgoingTeid(instance_t instance,
ue_id_t ue_id,
ebi_t bearer_id,
teid_t newOutgoingTeid);
void GtpuUpdateTunnelOutgoingAddressAndTeid(instance_t instance,
ue_id_t ue_id,
ebi_t bearer_id,
in_addr_t newOutgoingAddr,
teid_t newOutgoingTeid);
int newGtpuDeleteAllTunnels(instance_t instance, ue_id_t ue_id);
int newGtpuDeleteTunnels(instance_t instance, ue_id_t ue_id, int nbTunnels, pdusessionid_t *pdusession_id);