#ifndef _GPRS_SGSN_H #define _GPRS_SGSN_H #include #include #include #include #include #define GSM_IMSI_LENGTH 17 #define GSM_IMEI_LENGTH 17 #define GSM_EXTENSION_LENGTH 15 struct gprs_llc_lle; struct ctrl_handle; /* TS 04.08 4.1.3.3 GMM mobility management states on the network side */ enum gprs_mm_state { GMM_DEREGISTERED, /* 4.1.3.3.1.1 */ GMM_COMMON_PROC_INIT, /* 4.1.3.3.1.2 */ GMM_REGISTERED_NORMAL, /* 4.1.3.3.2.1 */ GMM_REGISTERED_SUSPENDED, /* 4.1.3.3.2.2 */ GMM_DEREGISTERED_INIT, /* 4.1.3.3.1.4 */ }; enum gprs_mm_ctr { GMM_CTR_PKTS_SIG_IN, GMM_CTR_PKTS_SIG_OUT, GMM_CTR_PKTS_UDATA_IN, GMM_CTR_PKTS_UDATA_OUT, GMM_CTR_BYTES_UDATA_IN, GMM_CTR_BYTES_UDATA_OUT, GMM_CTR_PDP_CTX_ACT, GMM_CTR_SUSPEND, GMM_CTR_PAGING_PS, GMM_CTR_PAGING_CS, GMM_CTR_RA_UPDATE, }; enum gprs_pdp_ctx { PDP_CTR_PKTS_UDATA_IN, PDP_CTR_PKTS_UDATA_OUT, PDP_CTR_BYTES_UDATA_IN, PDP_CTR_BYTES_UDATA_OUT, }; enum gprs_t3350_mode { GMM_T3350_MODE_ATT, GMM_T3350_MODE_RAU, GMM_T3350_MODE_PTMSI_REALL, }; #define MS_RADIO_ACCESS_CAPA /* According to TS 03.60, Table 5: SGSN MM and PDP Contexts */ /* Extended by 3GPP TS 23.060, Table 6: SGSN MM and PDP Contexts */ struct sgsn_mm_ctx { struct llist_head list; char imsi[GSM_IMSI_LENGTH]; enum gprs_mm_state mm_state; uint32_t p_tmsi; uint32_t p_tmsi_old; /* old P-TMSI before new is confirmed */ uint32_t p_tmsi_sig; char imei[GSM_IMEI_LENGTH]; /* Opt: Software Version Numbber / TS 23.195 */ char msisdn[GSM_EXTENSION_LENGTH]; struct gprs_ra_id ra; uint16_t cell_id; uint32_t cell_id_age; uint16_t sac; /* Iu: Service Area Code */ uint32_t sac_age;/* Iu: Service Area Code age */ /* VLR number */ uint32_t new_sgsn_addr; /* Authentication Triplets */ /* Kc */ /* Iu: CK, IK, KSI */ /* CKSN */ enum gprs_ciph_algo ciph_algo; struct { uint8_t len; uint8_t buf[50]; /* GSM 04.08 10.5.5.12a, extended in TS 24.008 */ } ms_radio_access_capa; struct { uint8_t len; uint8_t buf[8]; /* GSM 04.08 10.5.5.12, extended in TS 24.008 */ } ms_network_capa; uint16_t drx_parms; int mnrg; /* MS reported to HLR? */ int ngaf; /* MS reported to MSC/VLR? */ int ppf; /* paging for GPRS + non-GPRS? */ /* SMS Parameters */ int recovery; uint8_t radio_prio_sms; struct llist_head pdp_list; /* Additional bits not present in the GSM TS */ struct gprs_llc_llme *llme; uint32_t tlli; uint32_t tlli_new; uint16_t nsei; uint16_t bvci; struct rate_ctr_group *ctrg; struct osmo_timer_list timer; unsigned int T; /* Txxxx number */ unsigned int num_T_exp; /* number of consecutive T expirations */ enum gprs_t3350_mode t3350_mode; uint8_t t3370_id_type; }; /* look-up a SGSN MM context based on TLLI + RAI */ struct sgsn_mm_ctx *sgsn_mm_ctx_by_tlli(uint32_t tlli, const struct gprs_ra_id *raid); struct sgsn_mm_ctx *sgsn_mm_ctx_by_ptmsi(uint32_t tmsi); struct sgsn_mm_ctx *sgsn_mm_ctx_by_imsi(const char *imsi); /* Allocate a new SGSN MM context */ struct sgsn_mm_ctx *sgsn_mm_ctx_alloc(uint32_t tlli, const struct gprs_ra_id *raid); void sgsn_mm_ctx_free(struct sgsn_mm_ctx *mm); enum pdp_ctx_state { PDP_STATE_NONE, PDP_STATE_CR_REQ, PDP_STATE_CR_CONF, /* 04.08 / Figure 6.2 / 6.1.2.2 */ PDP_STATE_INACT_PEND, PDP_STATE_INACTIVE = PDP_STATE_NONE, }; enum pdp_type { PDP_TYPE_NONE, PDP_TYPE_ETSI_PPP, PDP_TYPE_IANA_IPv4, PDP_TYPE_IANA_IPv6, }; struct sgsn_pdp_ctx { struct llist_head list; /* list_head for mmctx->pdp_list */ struct llist_head g_list; /* list_head for global list */ struct sgsn_mm_ctx *mm; /* back pointer to MM CTX */ struct sgsn_ggsn_ctx *ggsn; /* which GGSN serves this PDP */ struct rate_ctr_group *ctrg; //unsigned int id; struct pdp_t *lib; /* pointer to libgtp PDP ctx */ enum pdp_ctx_state state; enum pdp_type type; uint32_t address; char *apn_subscribed; //char *apn_used; uint16_t nsapi; /* SNDCP */ uint16_t sapi; /* LLC */ uint8_t ti; /* transaction identifier */ int vplmn_allowed; uint32_t qos_profile_subscr; //uint32_t qos_profile_req; //uint32_t qos_profile_neg; uint8_t radio_prio; uint32_t tx_npdu_nr; uint32_t rx_npdu_nr; uint32_t tx_gtp_snd; uint32_t rx_gtp_snu; //uint32_t charging_id; int reordering_reqd; struct osmo_timer_list timer; unsigned int T; /* Txxxx number */ unsigned int num_T_exp; /* number of consecutive T expirations */ }; /* look up PDP context by MM context and NSAPI */ struct sgsn_pdp_ctx *sgsn_pdp_ctx_by_nsapi(const struct sgsn_mm_ctx *mm, uint8_t nsapi); /* look up PDP context by MM context and transaction ID */ struct sgsn_pdp_ctx *sgsn_pdp_ctx_by_tid(const struct sgsn_mm_ctx *mm, uint8_t tid); struct sgsn_pdp_ctx *sgsn_pdp_ctx_alloc(struct sgsn_mm_ctx *mm, uint8_t nsapi); void sgsn_pdp_ctx_free(struct sgsn_pdp_ctx *pdp); struct sgsn_ggsn_ctx { struct llist_head list; uint32_t id; unsigned int gtp_version; struct in_addr remote_addr; int remote_restart_ctr; struct gsn_t *gsn; }; struct sgsn_ggsn_ctx *sgsn_ggsn_ctx_alloc(uint32_t id); struct sgsn_ggsn_ctx *sgsn_ggsn_ctx_by_id(uint32_t id); struct sgsn_ggsn_ctx *sgsn_ggsn_ctx_by_addr(struct in_addr *addr); struct sgsn_ggsn_ctx *sgsn_ggsn_ctx_find_alloc(uint32_t id); struct apn_ctx { struct llist_head list; struct sgsn_ggsn_ctx *ggsn; char *name; char *description; }; extern struct llist_head sgsn_mm_ctxts; extern struct llist_head sgsn_ggsn_ctxts; extern struct llist_head sgsn_apn_ctxts; extern struct llist_head sgsn_pdp_ctxts; uint32_t sgsn_alloc_ptmsi(void); /* High-level function to be called in case a GGSN has disappeared or * ottherwise lost state (recovery procedure) */ int drop_all_pdp_for_ggsn(struct sgsn_ggsn_ctx *ggsn); char *gprs_pdpaddr2str(uint8_t *pdpa, uint8_t len); /* * ctrl interface related work */ struct gsm_network; struct ctrl_handle *sgsn_controlif_setup(struct gsm_network *, uint16_t port); int sgsn_ctrl_cmds_install(void); /* * ACL handling */ struct imsi_acl_entry; struct imsi_acl_entry *sgsn_acl_lookup(const char *imsi); int gprs_sndcp_vty_init(void); struct sgsn_instance; int sgsn_gtp_init(struct sgsn_instance *sgi); #endif /* _GPRS_SGSN_H */