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#ifndef _SGSN_H
#define _SGSN_H
#include <osmocom/core/msgb.h>
#include <osmocom/core/select.h>
#include <osmocom/crypt/gprs_cipher.h>
#include <osmocom/gprs/gprs_ns2.h>
#include <osmocom/gprs/gprs_bssgp.h>
#include <osmocom/sgsn/auth.h>
#include <osmocom/sgsn/gtp_mme.h>
#include <osmocom/gsm/oap_client.h>
#include <osmocom/gsupclient/gsup_client.h>
#include <osmocom/sgsn/common.h>
#include "../../config.h"
#if BUILD_IU
#include <osmocom/ranap/iu_client.h>
#endif
#include <ares.h>
#include <gtp.h>
struct hostent;
#define SGSN_ERROR_CAUSE_NONE (-1)
enum sgsn_auth_policy {
SGSN_AUTH_POLICY_OPEN,
SGSN_AUTH_POLICY_CLOSED,
SGSN_AUTH_POLICY_ACL_ONLY,
SGSN_AUTH_POLICY_REMOTE
};
enum sgsn_rate_ctr_keys {
CTR_LLC_DL_BYTES,
CTR_LLC_UL_BYTES,
CTR_LLC_DL_PACKETS,
CTR_LLC_UL_PACKETS,
CTR_GPRS_ATTACH_REQUEST,
CTR_GPRS_ATTACH_ACKED,
CTR_GPRS_ATTACH_REJECTED,
CTR_GPRS_DETACH_REQUEST,
CTR_GPRS_DETACH_ACKED,
CTR_GPRS_ROUTING_AREA_REQUEST,
CTR_GPRS_ROUTING_AREA_ACKED,
CTR_GPRS_ROUTING_AREA_REJECT,
/* PDP single packet counter / GSM 04.08 9.5.1 - 9.5.9 */
CTR_PDP_ACTIVATE_REQUEST,
CTR_PDP_ACTIVATE_REJECT,
CTR_PDP_ACTIVATE_ACCEPT,
CTR_PDP_REQUEST_ACTIVATE, /* unused */
CTR_PDP_REQUEST_ACTIVATE_REJ, /* unused */
CTR_PDP_MODIFY_REQUEST, /* unsued */
CTR_PDP_MODIFY_ACCEPT, /* unused */
CTR_PDP_DL_DEACTIVATE_REQUEST,
CTR_PDP_DL_DEACTIVATE_ACCEPT,
CTR_PDP_UL_DEACTIVATE_REQUEST,
CTR_PDP_UL_DEACTIVATE_ACCEPT,
};
struct sgsn_cdr {
char *filename;
bool trap;
int interval;
};
struct sgsn_config {
/* parsed from config file */
char *gtp_statedir;
struct sockaddr_in gtp_listenaddr;
/* misc */
struct gprs_ns2_inst *nsi;
enum sgsn_auth_policy auth_policy;
uint8_t gea_encryption_mask;
uint8_t uea_encryption_mask;
struct llist_head imsi_acl;
struct sockaddr_in gsup_server_addr;
int gsup_server_port;
/* Only meaningful if auth_policy is SGSN_AUTH_POLICY_REMOTE */
int require_authentication;
int require_update_location;
/* CDR configuration */
struct sgsn_cdr cdr;
/* Timer defintions */
struct osmo_tdef *T_defs;
struct osmo_tdef *T_defs_gtp;
int dynamic_lookup;
struct osmo_oap_client_config oap;
/* RFC1144 TCP/IP header compression */
struct {
int active;
int passive;
int s01;
} pcomp_rfc1144;
/* V.42vis data compression */
struct {
int active;
int passive;
int p0;
int p1;
int p2;
} dcomp_v42bis;
#if BUILD_IU
struct {
enum ranap_nsap_addr_enc rab_assign_addr_enc;
uint32_t cs7_instance;
} iu;
#endif
/* This is transmitted as IPA Serial Number tag, which is used for GSUP routing (e.g. in OsmoHLR).
* This name must be set in a multi-SGSN network, and it must be unique to each SGSN.
* If no name is set, the IPA Serial Number will be the same as the Unit Name,
* and will be of the form 'SGSN-00-00-00-00-00-00' */
char *sgsn_ipa_name;
};
struct sgsn_instance {
char *config_file;
struct sgsn_config cfg;
/* File descriptor wrappers for LibGTP */
struct osmo_fd gtp_fd0;
struct osmo_fd gtp_fd1c;
struct osmo_fd gtp_fd1u;
/* GSN instance for libgtp */
struct gsn_t *gsn;
/* Subscriber */
struct osmo_gsup_client *gsup_client;
/* LLME inactivity timer */
struct osmo_timer_list llme_timer;
/* c-ares event loop integration */
struct osmo_timer_list ares_timer;
struct llist_head ares_fds;
ares_channel ares_channel;
struct ares_addr_node *ares_servers;
struct rate_ctr_group *rate_ctrs;
struct llist_head apn_list; /* list of struct sgsn_apn_ctx */
struct llist_head ggsn_list; /* list of struct sgsn_ggsn_ctx */
struct llist_head mme_list; /* list of struct sgsn_mme_ctx */
struct llist_head pdp_list; /* list of struct sgsn_pdp_ctx */
struct ctrl_handle *ctrlh;
};
extern struct sgsn_instance *sgsn;
extern void *tall_sgsn_ctx;
/*
* ctrl interface related work (sgsn_ctrl.c)
*/
int sgsn_ctrl_cmds_install(void);
/* sgsn_vty.c */
int sgsn_vty_init(struct sgsn_config *cfg);
int sgsn_parse_config(const char *config_file);
char *sgsn_gtp_ntoa(struct ul16_t *ul);
/* sgsn.c */
struct sgsn_instance *sgsn_instance_alloc(void *talloc_ctx);
int sgsn_inst_init(struct sgsn_instance *sgsn);
/*
* CDR related functionality
*/
int sgsn_cdr_init(struct sgsn_instance *sgsn);
void sgsn_cdr_release(struct sgsn_instance *sgsn);
/*
* C-ARES related functionality
*/
int sgsn_ares_init(struct sgsn_instance *sgsn);
int sgsn_ares_query(struct sgsn_instance *sgsm, const char *name, ares_host_callback cb, void *data);
#endif
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