233 lines
6.6 KiB
C
233 lines
6.6 KiB
C
#ifndef _GPRS_BSSGP_H
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#define _GPRS_BSSGP_H
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#include <stdint.h>
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/* Section 5.4.1 */
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#define BVCI_SIGNALLING 0x0000
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#define BVCI_PTM 0x0001
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/* Section 11.3.26 / Table 11.27 */
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enum bssgp_pdu_type {
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/* PDUs between RL and BSSGP SAPs */
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BSSGP_PDUT_DL_UNITDATA = 0x00,
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BSSGP_PDUT_UL_UNITDATA = 0x01,
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BSSGP_PDUT_RA_CAPABILITY = 0x02,
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BSSGP_PDUT_PTM_UNITDATA = 0x03,
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/* PDUs between GMM SAPs */
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BSSGP_PDUT_PAGING_PS = 0x06,
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BSSGP_PDUT_PAGING_CS = 0x07,
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BSSGP_PDUT_RA_CAPA_UDPATE = 0x08,
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BSSGP_PDUT_RA_CAPA_UPDATE_ACK = 0x09,
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BSSGP_PDUT_RADIO_STATUS = 0x0a,
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BSSGP_PDUT_SUSPEND = 0x0b,
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BSSGP_PDUT_SUSPEND_ACK = 0x0c,
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BSSGP_PDUT_SUSPEND_NACK = 0x0d,
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BSSGP_PDUT_RESUME = 0x0e,
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BSSGP_PDUT_RESUME_ACK = 0x0f,
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BSSGP_PDUT_RESUME_NACK = 0x10,
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/* PDus between NM SAPs */
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BSSGP_PDUT_BVC_BLOCK = 0x20,
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BSSGP_PDUT_BVC_BLOCK_ACK = 0x21,
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BSSGP_PDUT_BVC_RESET = 0x22,
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BSSGP_PDUT_BVC_RESET_ACK = 0x23,
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BSSGP_PDUT_BVC_UNBLOCK = 0x24,
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BSSGP_PDUT_BVC_UNBLOCK_ACK = 0x25,
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BSSGP_PDUT_FLOW_CONTROL_BVC = 0x26,
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BSSGP_PDUT_FLOW_CONTROL_BVC_ACK = 0x27,
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BSSGP_PDUT_FLOW_CONTROL_MS = 0x28,
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BSSGP_PDUT_FLOW_CONTROL_MS_ACK = 0x29,
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BSSGP_PDUT_FLUSH_LL = 0x2a,
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BSSGP_PDUT_FLUSH_LL_ACK = 0x2b,
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BSSGP_PDUT_LLC_DISCARD = 0x2c,
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BSSGP_PDUT_SGSN_INVOKE_TRACE = 0x40,
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BSSGP_PDUT_STATUS = 0x41,
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/* PDUs between PFM SAP's */
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BSSGP_PDUT_DOWNLOAD_BSS_PFC = 0x50,
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BSSGP_PDUT_CREATE_BSS_PFC = 0x51,
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BSSGP_PDUT_CREATE_BSS_PFC_ACK = 0x52,
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BSSGP_PDUT_CREATE_BSS_PFC_NACK = 0x53,
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BSSGP_PDUT_MODIFY_BSS_PFC = 0x54,
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BSSGP_PDUT_MODIFY_BSS_PFC_ACK = 0x55,
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BSSGP_PDUT_DELETE_BSS_PFC = 0x56,
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BSSGP_PDUT_DELETE_BSS_PFC_ACK = 0x57,
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};
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/* Section 10.2.1 and 10.2.2 */
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struct bssgp_ud_hdr {
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uint8_t pdu_type;
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uint32_t tlli;
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uint8_t qos_profile[3];
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uint8_t data[0]; /* TLV's */
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} __attribute__((packed));
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struct bssgp_normal_hdr {
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uint8_t pdu_type;
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uint8_t data[0]; /* TLV's */
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};
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enum bssgp_iei_type {
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BSSGP_IE_ALIGNMENT = 0x00,
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BSSGP_IE_BMAX_DEFAULT_MS = 0x01,
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BSSGP_IE_BSS_AREA_ID = 0x02,
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BSSGP_IE_BUCKET_LEAK_RATE = 0x03,
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BSSGP_IE_BVCI = 0x04,
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BSSGP_IE_BVC_BUCKET_SIZE = 0x05,
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BSSGP_IE_BVC_MEASUREMENT = 0x06,
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BSSGP_IE_CAUSE = 0x07,
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BSSGP_IE_CELL_ID = 0x08,
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BSSGP_IE_CHAN_NEEDED = 0x09,
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BSSGP_IE_DRX_PARAMS = 0x0a,
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BSSGP_IE_EMLPP_PRIO = 0x0b,
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BSSGP_IE_FLUSH_ACTION = 0x0c,
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BSSGP_IE_IMSI = 0x0d,
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BSSGP_IE_LLC_PDU = 0x0e,
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BSSGP_IE_LLC_FRAMES_DISCARDED = 0x0f,
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BSSGP_IE_LOCATION_AREA = 0x10,
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BSSGP_IE_MOBILE_ID = 0x11,
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BSSGP_IE_MS_BUCKET_SIZE = 0x12,
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BSSGP_IE_MS_RADIO_ACCESS_CAP = 0x13,
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BSSGP_IE_OMC_ID = 0x14,
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BSSGP_IE_PDU_IN_ERROR = 0x15,
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BSSGP_IE_PDU_LIFETIME = 0x16,
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BSSGP_IE_PRIORITY = 0x17,
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BSSGP_IE_QOS_PROFILE = 0x18,
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BSSGP_IE_RADIO_CAUSE = 0x19,
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BSSGP_IE_RA_CAP_UPD_CAUSE = 0x1a,
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BSSGP_IE_ROUTEING_AREA = 0x1b,
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BSSGP_IE_R_DEFAULT_MS = 0x1c,
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BSSGP_IE_SUSPEND_REF_NR = 0x1d,
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BSSGP_IE_TAG = 0x1e,
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BSSGP_IE_TLLI = 0x1f,
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BSSGP_IE_TMSI = 0x20,
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BSSGP_IE_TRACE_REFERENC = 0x21,
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BSSGP_IE_TRACE_TYPE = 0x22,
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BSSGP_IE_TRANSACTION_ID = 0x23,
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BSSGP_IE_TRIGGER_ID = 0x24,
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BSSGP_IE_NUM_OCT_AFF = 0x25,
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BSSGP_IE_LSA_ID_LIST = 0x26,
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BSSGP_IE_LSA_INFORMATION = 0x27,
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BSSGP_IE_PACKET_FLOW_ID = 0x28,
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BSSGP_IE_PACKET_FLOW_TIMER = 0x29,
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BSSGP_IE_AGG_BSS_QOS_PROFILE = 0x3a,
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BSSGP_IE_FEATURE_BITMAP = 0x3b,
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BSSGP_IE_BUCKET_FULL_RATIO = 0x3c,
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BSSGP_IE_SERVICE_UTRAN_CCO = 0x3d,
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};
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/* Section 11.3.8 / Table 11.10: Cause coding */
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enum gprs_bssgp_cause {
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BSSGP_CAUSE_PROC_OVERLOAD = 0x00,
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BSSGP_CAUSE_EQUIP_FAIL = 0x01,
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BSSGP_CAUSE_TRASIT_NET_FAIL = 0x02,
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BSSGP_CAUSE_CAPA_GREATER_0KPBS = 0x03,
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BSSGP_CAUSE_UNKNOWN_MS = 0x04,
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BSSGP_CAUSE_UNKNOWN_BVCI = 0x05,
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BSSGP_CAUSE_CELL_TRAF_CONG = 0x06,
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BSSGP_CAUSE_SGSN_CONG = 0x07,
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BSSGP_CAUSE_OML_INTERV = 0x08,
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BSSGP_CAUSE_BVCI_BLOCKED = 0x09,
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BSSGP_CAUSE_PFC_CREATE_FAIL = 0x0a,
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BSSGP_CAUSE_SEM_INCORR_PDU = 0x20,
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BSSGP_CAUSE_INV_MAND_INF = 0x21,
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BSSGP_CAUSE_MISSING_MAND_IE = 0x22,
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BSSGP_CAUSE_MISSING_COND_IE = 0x23,
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BSSGP_CAUSE_UNEXP_COND_IE = 0x24,
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BSSGP_CAUSE_COND_IE_ERR = 0x25,
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BSSGP_CAUSE_PDU_INCOMP_STATE = 0x26,
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BSSGP_CAUSE_PROTO_ERR_UNSPEC = 0x27,
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BSSGP_CAUSE_PDU_INCOMP_FEAT = 0x28,
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};
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/* Our implementation */
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/* gprs_bssgp_util.c */
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extern struct gprs_ns_inst *bssgp_nsi;
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struct msgb *bssgp_msgb_alloc(void);
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const char *bssgp_cause_str(enum gprs_bssgp_cause cause);
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/* Transmit a simple response such as BLOCK/UNBLOCK/RESET ACK/NACK */
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int bssgp_tx_simple_bvci(uint8_t pdu_type, uint16_t nsei,
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uint16_t bvci, uint16_t ns_bvci);
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/* Chapter 10.4.14: Status */
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int bssgp_tx_status(uint8_t cause, uint16_t *bvci, struct msgb *orig_msg);
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/* gprs_bssgp.c */
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#define BVC_S_BLOCKED 0x0001
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/* The per-BTS context that we keep on the SGSN side of the BSSGP link */
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struct bssgp_bvc_ctx {
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struct llist_head list;
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/* parsed RA ID and Cell ID of the remote BTS */
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struct gprs_ra_id ra_id;
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uint16_t cell_id;
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/* NSEI and BVCI of underlying Gb link. Together they
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* uniquely identify a link to a BTS (5.4.4) */
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uint16_t bvci;
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uint16_t nsei;
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uint32_t state;
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struct rate_ctr_group *ctrg;
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/* we might want to add this as a shortcut later, avoiding the NSVC
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* lookup for every packet, similar to a routing cache */
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//struct gprs_nsvc *nsvc;
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};
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extern struct llist_head bssgp_bvc_ctxts;
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/* Find a BTS Context based on parsed RA ID and Cell ID */
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struct bssgp_bvc_ctx *btsctx_by_raid_cid(const struct gprs_ra_id *raid, uint16_t cid);
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/* Find a BTS context based on BVCI+NSEI tuple */
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struct bssgp_bvc_ctx *btsctx_by_bvci_nsei(uint16_t bvci, uint16_t nsei);
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#include <osmocore/tlv.h>
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/* BSSGP-UL-UNITDATA.ind */
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int gprs_bssgp_rcvmsg(struct msgb *msg);
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/* BSSGP-DL-UNITDATA.req */
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struct sgsn_mm_ctx;
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int gprs_bssgp_tx_dl_ud(struct msgb *msg, struct sgsn_mm_ctx *mmctx);
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uint16_t bssgp_parse_cell_id(struct gprs_ra_id *raid, const uint8_t *buf);
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/* Wrapper around TLV parser to parse BSSGP IEs */
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static inline int bssgp_tlv_parse(struct tlv_parsed *tp, uint8_t *buf, int len)
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{
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return tlv_parse(tp, &tvlv_att_def, buf, len, 0, 0);
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}
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enum bssgp_paging_mode {
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BSSGP_PAGING_PS,
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BSSGP_PAGING_CS,
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};
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enum bssgp_paging_scope {
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BSSGP_PAGING_BSS_AREA, /* all cells in BSS */
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BSSGP_PAGING_LOCATION_AREA, /* all cells in LA */
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BSSGP_PAGING_ROUTEING_AREA, /* all cells in RA */
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BSSGP_PAGING_BVCI, /* one cell */
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};
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struct bssgp_paging_info {
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enum bssgp_paging_mode mode;
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enum bssgp_paging_scope scope;
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struct gprs_ra_id raid;
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uint16_t bvci;
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const char *imsi;
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uint32_t *ptmsi;
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uint16_t drx_params;
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uint8_t qos[3];
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};
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/* Send a single GMM-PAGING.req to a given NSEI/NS-BVCI */
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int gprs_bssgp_tx_paging(uint16_t nsei, uint16_t ns_bvci,
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struct bssgp_paging_info *pinfo);
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/* gprs_bssgp_vty.c */
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int gprs_bssgp_vty_init(void);
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#endif /* _GPRS_BSSGP_H */
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