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