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very early intial code snippets for handling HNBAP in a HNB-GW

This commit is contained in:
Harald Welte 2015-08-29 20:33:16 +02:00
parent 2e00202f58
commit ba43de4bf6
3 changed files with 222 additions and 0 deletions
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55
src/hnbap_const.h Normal file
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#pragma once
/* should be auto-generated by ffasn1c, but isn't :( */
enum hnbap_procedure_code {
HNBAP_PC_HNBRegister = 1,
HNBAP_PC_HNBDe_Register = 2,
HNBAP_PC_UERegister = 3,
HNBAP_PC_UEDe_Register = 4,
HNBAP_PC_ErrorIndication = 5,
HNBAP_PC_privateMessage = 6,
HNBAP_PC_CSGMembershipUpdate = 7,
HNBAP_PC_TNLUpdate = 9,
HNBAP_PC_HNBConfigTransfer = 10,
HNBAP_PC_RelocationComplete = 11,
HNBAP_PC_U_RNTIQuery = 14,
};
/* should be auto-generated by ffasn1c, but isn't :( */
enum hnbap_iei {
HNBAP_IEI_Cause = 1,
HNBAP_IEI_CriticalityDiagnostics = 2,
HNBAP_IEI_HNB_Identity = 3,
HNBAP_IEI_Context_ID = 4,
HNBAP_IEI_UE_Identity = 5,
HNBAP_IEI_LAC = 6,
HNBAP_IEI_RAC = 7,
HNBAP_IEI_HNB_Location_Information = 8,
HNBAP_IEI_PLMNidentity = 9,
HNBAP_IEI_SAC = 10,
HNBAP_IEI_CellIdentity = 11,
HNBAP_IEI_RegistrationCause = 12,
HNBAP_IEI_UE_Capabilities = 13,
HNBAP_IEI_RNC_ID = 14,
HNBAP_IEI_CSG_ID = 15,
HNBAP_IEI_BackoffTimer = 16,
HNBAP_IEI_HNB_Internet_Information = 17,
HNBAP_IEI_HNB_Cell_Acces_Mode = 18,
HNBAP_IEI_MuxPortNumber = 19,
HNBAP_IEI_Service_Area_For_Broadcast = 20,
HNBAP_IEI_CSGMembershipStatus = 21,
HNBAP_IEI_RABList = 22,
HNBAP_IEI_HNBConfigInfo = 23,
HNBAP_IEI_AccessResult = 25,
HNBAP_IEI_Update_cause = 26,
HNBAP_IEI_NeighborInfoList = 27,
HNBAP_IEI_NeighborInfoRequestList = 28,
HNBAP_IEI_Iurh_Signalling_TNL_Address = 29,
HNBAP_IEI_PSC = 30,
HNBAP_IEI_HNB_Cell_Identifier = 31,
HNBAP_IEI_HNB_Tunnel_Information = 41,
HNBAP_IEI_CELL_FACHMobilitySupport = 42,
HNBAP_IEI_S_RNTIPrefix = 43,
HNBAP_IEI_S_RNTIPrefix = 43,
/* FIXME */
};

29
src/hnbgw.h Normal file
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#pragma once
#include <osmocom/core/select.h>
#include <osmocom/core/linuxlist.h>
struct hnb_context {
/*! Entry in HNB-global list of HNB */
struct llist_head list;
/*! SCTP socket for Iuh to this specific HNB */
struct osmo_fd socket;
/*! copied from HNB-Identity-Info */
char identity[256];
};
struct ue_context {
struct llist_head list;
uint32_t context_id;
};
struct hnb_gw {
struct {
/*! SCTP port for Iuh listening */
uint16_t iuh_listen_port;
} config;
/*! SCTP listen socket for incoming connections */
struct osmo_fd listen_fd;
struct llist_head hnb_list;
};

138
src/hnbgw_hnbap.c Normal file
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#include <osmocom/core/msgb.h>
#include "hnbgw.h"
#include "hnbap_const.h"
static int hnbgw_hnbap_tx(struct HNBAP_PDU *pdu)
{
/* FIXME */
}
static int hnbgw_tx_hnb_register_acc()
{
/* FIXME */
/* Single required response IE: RNC-ID */
}
static int hnbgw_tx_ue_register_acc()
{
/* FIXME */
/* Single required response IE: RNC-ID */
}
struct ProtocolIE_Field_1 *find_ie(const struct ProtocolIE_Container_1 *cont, ProtocolIE_ID id)
{
for (i = 0; i < cont->count; i++) {
if (cont->tab[i].id == id)
return &cont->tab[i];
}
return NULL;
}
static int hnbgw_rx_hnb_register_req(struct HNBRegisterRequest *req)
{
HNB_Identity *identity =
FIND_IE(req->protocolIEs, HNBAP_IEI_HNB_Identity);
HNB_Location_Information *loc =
FIND_IE(req->protocolIEs, HNBAP_IEI_HNB_Location_Information);
PLMNidentity *plmn_id =
FIND_IE(req->protocolIEs, HNBAP_IEI_PLMNidentity);
CellIdentity *cell_id =
FIND_IE(req->protocolIEs, HNBAP_IEI_CellIdentity);
LAC *lac = FIND_IE(req->protocolIEs, HNBAP_IEI_LAC);
RAC *rac = FIND_IE(req->protocolIEs, HNBAP_IEI_RAC);
SAC *sac = FIND_IE(req->protocolIEs, HNBAP_IEI_SAC);
/* Optional: CSG-ID */
if(!identity || !loc || !plmn_id || !cell_id || !lac || !rac || !sac)
return -1;
/* FIXME: Send HNBRegisterAccept */
}
static int hnbgw_rx_ue_register_req(struct UERegisterRequest *req)
{
UE_Identity *id =
FIND_IE(req->protocolIEs, HNBAP_IEI_UE_Identity);
Registration_Cause *reg_cause =
FIND_IE(req->protocolIEs, HNBAP_IEI_RegistrationCause);
UE_Capabilities *ue_cap =
FIND_IE(req->protocolIEs, HNBAP_IEI_UE_Capabilities);
if (!id || !reg_cause || !ue_cap)
return -1;
/* FIXME: Send UERegisterAccept */
}
static int hnbgw_rx_initiating_msg(struct InitiatingMessage *msg)
{
int rc;
switch (msg->procedureCode) {
case HNBAP_PC_HNBRegister: /* 8.2 */
if (msg->value.type != asn1_type_HNBRegisterRequest)
return -1;
rc = hnbgw_rx_hnb_register_req();
break;
case HNBAP_PC_HNBDe_Register: /* 8.3 */
break;
case HNBAP_PC_UERegister: /* 8.4 */
if (msg->value.type != asn1_type_UERegisterRequest)
return -1;
rc = hnbgw_rx_ue_register_req();
break;
case HNBAP_PC_UEDe_Register: /* 8.5 */
break;
case HNBAP_PC_ErrorIndication: /* 8.6 */
case HNBAP_PC_TNLUpdate: /* 8.9 */
case HNBAP_PC_HNBConfigTransfer: /* 8.10 */
case HNBAP_PC_RelocationComplete: /* 8.11 */
case HNBAP_PC_U_RNTIQuery: /* 8.12 */
case HNBAP_PC_privateMessage:
break;
default:
break;
}
}
static int hnbgw_rx_successful_outcome_msg(struct SuccessfulOutcome *msg)
{
}
static int hnbgw_rx_unsuccessful_outcome_msg(struct UnsuccessfulOutcome *msg)
{
}
static int _hnbgw_hnbap_rx(struct HNBAP_PDU *pdu)
{
/* it's a bit odd that we can't dispatch on procedure code, but
* that's not possible */
switch (pdu->choice) {
case HNBAP_PDU_initiatingMessage:
rc = hnbgw_rx_initiating_msg(&pdu->u.initiatingMessage);
break;
case HNBAP_PDU_successfulOutcome:
rc = hnbgw_rx_successful_outcome_msg(&pdu->u.successfulOutcome);
break;
case HNBAP_PDU_unsuccessfulOutcome:
rc = hnbgw_rx_unsuccessful_outcome_msg(&pdu->u.unsuccessfulOutcome);
break;
default:
return -1;
}
}
int hnbgw_hnbap_rx(struct msgb *msg)
{
/* FIXME: decode and handle to _hnbgw_hnbap_rx() */
}
int hnbgw_hnbap_init(void)
{
}