#pragma once #include "config.h" #include #include #include #include #include #include #include #include #include #include #include #include #define GSM_EXTENSION_LENGTH 15 struct gprs_llc_lle; struct ctrl_handle; struct gprs_subscr; struct sgsn_ggsn_ctx; struct sgsn_pdp_ctx; enum gsm48_gsm_cause; 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_t3350_mode { GMM_T3350_MODE_NONE, GMM_T3350_MODE_ATT, GMM_T3350_MODE_RAU, GMM_T3350_MODE_PTMSI_REALL, }; enum sgsn_ggsn_lookup_state { SGSN_GGSN_2DIGIT, SGSN_GGSN_3DIGIT, }; struct sgsn_ggsn_lookup { int state; struct sgsn_mm_ctx *mmctx; /* APN string */ char apn_str[GSM_APN_LENGTH]; /* the original data */ struct msgb *orig_msg; struct tlv_parsed tp; /* for dealing with re-transmissions */ uint8_t nsapi; uint8_t sapi; uint8_t ti; }; enum sgsn_ran_type { /* GPRS/EDGE via Gb */ MM_CTX_T_GERAN_Gb, /* UMTS via Iu */ MM_CTX_T_UTRAN_Iu, #if 0 /* GPRS/EDGE via Iu, not supported */ MM_CTX_T_GERAN_Iu, #endif }; extern const struct value_string sgsn_ran_type_names[]; struct service_info { uint8_t type; uint16_t pdp_status; }; struct ranap_ue_conn_ctx; /* 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; enum sgsn_ran_type ran_type; char imsi[GSM23003_IMSI_MAX_DIGITS+1]; struct osmo_fsm_inst *gmm_fsm; uint32_t p_tmsi; uint32_t p_tmsi_old; /* old P-TMSI before new is confirmed */ uint32_t p_tmsi_sig; char imei[GSM23003_IMEISV_NUM_DIGITS+1]; /* Opt: Software Version Numbber / TS 23.195 */ char msisdn[GSM_EXTENSION_LENGTH]; struct osmo_routing_area_id ra; struct { uint16_t cell_id; /* Gb only */ uint32_t cell_id_age; /* Gb only */ uint8_t radio_prio_sms; /* Additional bits not present in the GSM TS */ uint16_t nsei; uint16_t bvci; struct gprs_llc_llme *llme; uint32_t tlli; uint32_t tlli_new; /* TS 23.060 6.1.1 Mobility Management States (A/Gb mode) */ struct osmo_fsm_inst *mm_state_fsm; } gb; struct { int new_key; uint16_t sac; /* Iu: Service Area Code */ uint32_t sac_age; /* Iu: Service Area Code age */ /* CSG ID */ /* CSG Membership */ /* Access Mode */ /* Seelected CN Operator ID (TS 23.251) */ /* CSG Subscription Data */ /* LIPA Allowed */ /* Voice Support Match Indicator */ struct ranap_ue_conn_ctx *ue_ctx; struct service_info service; /* TS 23.060 6.1.2 Mobility Management States (Iu mode) */ struct osmo_fsm_inst *mm_state_fsm; } iu; struct { struct osmo_fsm_inst *fsm; /* when a second attach req arrives while in this procedure, * the fsm needs to compare it against old to decide what to do */ struct msgb *attach_req; uint32_t id_type; unsigned int auth_reattempt; /* tracking UMTS resync auth attempts */ } gmm_att_req; /* VLR number */ uint32_t new_sgsn_addr; /* Authentication Triplet */ struct gsm_auth_tuple auth_triplet; /* Kc */ /* Iu: CK, IK, KSI */ /* CKSN */ enum gprs_ciph_algo ciph_algo; uint8_t ue_cipher_mask; /* Auth & Ciphering Request reference from 3GPP TS 24.008 ยง 10.5.5.19: */ uint8_t ac_ref_nr_used; struct { uint8_t len; uint8_t buf[50]; /* GSM 04.08 10.5.5.12a, extended in TS 24.008 */ } ms_radio_access_capa; /* Supported Codecs (SRVCC) */ struct { uint8_t len; uint8_t buf[8]; /* GSM 04.08 10.5.5.12, extended in TS 24.008 */ } ms_network_capa; /* UE Netowrk Capability (E-UTRAN) */ uint16_t drx_parms; /* Active Time value for PSM */ int mnrg; /* MS reported to HLR? */ int ngaf; /* MS reported to MSC/VLR? */ int ppf; /* paging for GPRS + non-GPRS? */ /* Subscribed Charging Characteristics */ /* Trace Reference */ /* Trace Type */ /* Trigger ID */ /* OMC Identity */ /* SMS Parameters */ int recovery; /* Access Restriction */ /* GPRS CSI (CAMEL) */ /* MG-CSI (CAMEL) */ /* Subscribed UE-AMBR */ /* UE-AMBR */ /* APN Subscribed */ struct llist_head pdp_list; 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; uint8_t pending_req; /* the request's message type */ /* TODO: There isn't much semantic difference between t3350_mode * (refers to the timer) and pending_req (refers to the procedure), * where mm->T == 3350 => mm->t3350_mode == f(mm->pending_req). Check * whether one of them can be dropped. */ enum sgsn_auth_state auth_state; enum osmo_sub_auth_type sec_ctx; /* the string representation of the current hlr */ char hlr[GSM_EXTENSION_LENGTH]; /* the current GGSN look-up operation */ struct sgsn_ggsn_lookup *ggsn_lookup; struct gprs_subscr *subscr; }; static inline bool sgsn_mm_ctx_is_authenticated(struct sgsn_mm_ctx *ctx) { switch (ctx->sec_ctx) { case OSMO_AUTH_TYPE_GSM: case OSMO_AUTH_TYPE_UMTS: return true; default: return false; } } #define LOGMMCTXP(level, mm, fmt, args...) \ LOGP(DMM, level, "MM(%s/%08x) " fmt, (mm) ? (mm)->imsi : "---", \ (mm) ? (mm)->p_tmsi : GSM_RESERVED_TMSI, ## args) #ifdef BUILD_IU #define LOGIUP(ue, level, fmt, args...) \ LOGP(DMM, level, "UE(0x%x){%s} " fmt, (ue) ? (ue)->conn_id : 0xffffffff, \ (ue) ? osmo_rai_name(&(ue)->ra_id) : "", ## args) #else #define LOGIUP(ue, level, fmt, args...) \ LOGP(DMM, level, "UE(%p){NOTSUPPORTED} " fmt, ue, ## args) #endif #define LOGGBP(llme, category, level, fmt, args...) \ LOGP(category, level, "LLME(%08x/%08x){%s} " fmt, (llme)->old_tlli, \ (llme)->tlli, get_value_string_or_null(gprs_llc_llme_state_names, (llme)->state), ## args); #define LOGGBIUP(llme, msg, level, fmt, args...) \ do { \ struct ranap_ue_conn_ctx * _ue; \ if (llme) { \ LOGGBP(llme, DMM, level, fmt, ## args); \ } else if ((msg) && (_ue = MSG_IU_UE_CTX(msg))) { \ LOGIUP(_ue, level, fmt, ## args); \ } else { OSMO_ASSERT(0); } \ } while (0) /* look-up a SGSN MM context based on TLLI + RAI */ struct sgsn_mm_ctx *sgsn_mm_ctx_by_tlli(uint32_t tlli, const struct osmo_routing_area_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); struct sgsn_mm_ctx *sgsn_mm_ctx_by_ue_ctx(const void *uectx); struct sgsn_mm_ctx *sgsn_mm_ctx_by_llme(const struct gprs_llc_llme *llme); /* look-up by matching TLLI and P-TMSI (think twice before using this) */ struct sgsn_mm_ctx *sgsn_mm_ctx_by_tlli_and_ptmsi(uint32_t tlli, const struct osmo_routing_area_id *raid); /* Allocate a new SGSN MM context */ struct sgsn_mm_ctx *sgsn_mm_ctx_alloc_gb(uint32_t tlli, const struct osmo_routing_area_id *raid); struct sgsn_mm_ctx *sgsn_mm_ctx_alloc_iu(void *uectx); void sgsn_mm_ctx_cleanup_free(struct sgsn_mm_ctx *ctx); struct sgsn_ggsn_ctx *sgsn_mm_ctx_find_ggsn_ctx(struct sgsn_mm_ctx *mmctx, struct tlv_parsed *tp, enum gsm48_gsm_cause *gsm_cause, char *apn_str); /* 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); bool sgsn_mm_ctx_is_r99(const struct sgsn_mm_ctx *mm); uint32_t sgsn_alloc_ptmsi(void); /* Called on subscriber data updates */ void sgsn_update_subscriber_data(struct sgsn_mm_ctx *mmctx); #ifdef BUILD_IU struct RANAP_Cause; void sgsn_mm_ctx_iu_activate_rabs(struct sgsn_mm_ctx *ctx); void sgsn_mm_ctx_iu_ranap_release_free(struct sgsn_mm_ctx *ctx, const struct RANAP_Cause *cause); void sgsn_mm_ctx_iu_ranap_free(struct sgsn_mm_ctx *ctx); #endif /* ifdef BUILD_IU */