| #ifndef _GB_PROXY_H |
| #define _GB_PROXY_H |
| |
| |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/core/timer.h> |
| #include <osmocom/core/hashtable.h> |
| #include <osmocom/gsm/gsm23003.h> |
| |
| #include <osmocom/gprs/gprs_ns2.h> |
| #include <osmocom/vty/command.h> |
| |
| #include <sys/types.h> |
| #include <regex.h> |
| #include <stdbool.h> |
| |
| #define GBPROXY_INIT_VU_GEN_TX 256 |
| |
| /* BVCI uses 16 bits */ |
| #define BVC_LOG_CTX_FLAG (1<<17) |
| |
| struct rate_ctr_group; |
| struct gprs_gb_parse_context; |
| struct tlv_parsed; |
| |
| enum gbproxy_global_ctr { |
| GBPROX_GLOB_CTR_INV_BVCI, |
| GBPROX_GLOB_CTR_INV_LAI, |
| GBPROX_GLOB_CTR_INV_RAI, |
| GBPROX_GLOB_CTR_INV_NSEI, |
| GBPROX_GLOB_CTR_PROTO_ERR_BSS, |
| GBPROX_GLOB_CTR_PROTO_ERR_SGSN, |
| GBPROX_GLOB_CTR_NOT_SUPPORTED_BSS, |
| GBPROX_GLOB_CTR_NOT_SUPPORTED_SGSN, |
| GBPROX_GLOB_CTR_RESTART_RESET_SGSN, |
| GBPROX_GLOB_CTR_TX_ERR_SGSN, |
| GBPROX_GLOB_CTR_OTHER_ERR, |
| }; |
| |
| enum gbproxy_bvc_ctr { |
| GBPROX_PEER_CTR_BLOCKED, |
| GBPROX_PEER_CTR_UNBLOCKED, |
| GBPROX_PEER_CTR_DROPPED, |
| GBPROX_PEER_CTR_INV_NSEI, |
| GBPROX_PEER_CTR_TX_ERR, |
| GBPROX_PEER_CTR_LAST, |
| }; |
| |
| /* global gb-proxy configuration */ |
| struct gbproxy_config { |
| /* parsed from config file */ |
| uint16_t nsip_sgsn_nsei; |
| |
| /* NS instance of libosmogb */ |
| struct gprs_ns2_inst *nsi; |
| |
| /* Linked list of all BSS side Gb peers */ |
| DECLARE_HASHTABLE(bss_nses, 8); |
| |
| /* Counter */ |
| struct rate_ctr_group *ctrg; |
| }; |
| |
| /* One BVC inside an NSE */ |
| struct gbproxy_bvc { |
| /* linked to gbproxy_nse.bvcs */ |
| struct hlist_node list; |
| |
| /* The NSE this BVC belongs to */ |
| struct gbproxy_nse *nse; |
| |
| /* PTP BVCI of this BVC */ |
| uint16_t bvci; |
| |
| /* Routing Area that this BVC is part of (raw 04.08 encoding) */ |
| uint8_t ra[6]; |
| |
| /* true if this BVC is blocked */ |
| bool blocked; |
| |
| /* Counter */ |
| struct rate_ctr_group *ctrg; |
| }; |
| |
| /* one NS Entity that we interact with (BSS/PCU) */ |
| struct gbproxy_nse { |
| /* linked to gbproxy_config.bss_nses */ |
| struct hlist_node list; |
| |
| /* point back to the config */ |
| struct gbproxy_config *cfg; |
| |
| /* NSEI of the NSE */ |
| uint16_t nsei; |
| |
| /* List of all BVCs in this NSE */ |
| DECLARE_HASHTABLE(bvcs, 10); |
| }; |
| |
| /* Convenience logging macros for NSE/BVC */ |
| #define LOGPNSE_CAT(NSE, SUBSYS, LEVEL, FMT, ARGS...) \ |
| LOGP(SUBSYS, LEVEL, "NSE(%05u/BSS) " FMT, (NSE)->nsei, ## ARGS) |
| #define LOGPNSE(NSE, LEVEL, FMT, ARGS...) \ |
| LOGPNSE_CAT(NSE, DGPRS, LEVEL, FMT, ## ARGS) |
| |
| #define LOGPBVC_CAT(BVC, SUBSYS, LEVEL, FMT, ARGS...) \ |
| LOGP(SUBSYS, LEVEL, "NSE(%05u/BSS)-BVC(%05u/%s) " FMT, (BVC)->nse->nsei, (BVC)->bvci, \ |
| (BVC)->blocked ? "BLOCKED" : "UNBLOCKED", ## ARGS) |
| #define LOGPBVC(BVC, LEVEL, FMT, ARGS...) \ |
| LOGPBVC_CAT(BVC, DGPRS, LEVEL, FMT, ## ARGS) |
| |
| /* gb_proxy_vty .c */ |
| |
| int gbproxy_vty_init(void); |
| int gbproxy_parse_config(const char *config_file, struct gbproxy_config *cfg); |
| |
| /* gb_proxy_ctrl.c */ |
| int gb_ctrl_cmds_install(void); |
| |
| |
| /* gb_proxy.c */ |
| int gbproxy_init_config(struct gbproxy_config *cfg); |
| |
| /* Main input function for Gb proxy */ |
| int gbprox_rcvmsg(void *ctx, struct msgb *msg); |
| |
| int gbprox_signal(unsigned int subsys, unsigned int signal, |
| void *handler_data, void *signal_data); |
| |
| |
| int gprs_ns2_prim_cb(struct osmo_prim_hdr *oph, void *ctx); |
| |
| void gbprox_reset(struct gbproxy_config *cfg); |
| |
| /* Peer handling */ |
| struct gbproxy_bvc *gbproxy_bvc_by_bvci( |
| struct gbproxy_config *cfg, uint16_t bvci); |
| struct gbproxy_bvc *gbproxy_bvc_by_nsei( |
| struct gbproxy_config *cfg, uint16_t nsei); |
| struct gbproxy_bvc *gbproxy_bvc_by_rai( |
| struct gbproxy_config *cfg, const uint8_t *ra); |
| struct gbproxy_bvc *gbproxy_bvc_alloc(struct gbproxy_nse *nse, uint16_t bvci); |
| void gbproxy_bvc_free(struct gbproxy_bvc *bvc); |
| void gbproxy_bvc_move(struct gbproxy_bvc *bvc, struct gbproxy_nse *nse); |
| int gbproxy_cleanup_bvcs(struct gbproxy_config *cfg, uint16_t nsei, uint16_t bvci); |
| |
| /* NSE handling */ |
| struct gbproxy_nse *gbproxy_nse_alloc(struct gbproxy_config *cfg, uint16_t nsei); |
| void gbproxy_nse_free(struct gbproxy_nse *nse); |
| struct gbproxy_nse *gbproxy_nse_by_nsei(struct gbproxy_config *cfg, uint16_t nsei); |
| struct gbproxy_nse *gbproxy_nse_by_nsei_or_new(struct gbproxy_config *cfg, uint16_t nsei); |
| |
| #endif |