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#ifndef _SGSN_H
#define _SGSN_H
#include <osmocom/core/msgb.h>
#include <osmocom/gprs/gprs_ns.h>
#include <openbsc/gprs_sgsn.h>
#define SGSN_TIMEOUT_NEVER (-1)
struct gprs_gsup_client;
enum sgsn_auth_policy {
SGSN_AUTH_POLICY_OPEN,
SGSN_AUTH_POLICY_CLOSED,
SGSN_AUTH_POLICY_ACL_ONLY,
SGSN_AUTH_POLICY_REMOTE
};
struct sgsn_config {
/* parsed from config file */
char *gtp_statedir;
struct sockaddr_in gtp_listenaddr;
/* misc */
struct gprs_ns_inst *nsi;
enum sgsn_auth_policy auth_policy;
struct llist_head imsi_acl;
struct sockaddr_in gsup_server_addr;
int gsup_server_port;
int subscriber_expiry_timeout;
int require_authentication;
int require_update_location;
};
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;
/* Timer for libGTP */
struct osmo_timer_list gtp_timer;
/* GSN instance for libgtp */
struct gsn_t *gsn;
/* Subscriber */
struct gprs_gsup_client *gsup_client;
};
extern struct sgsn_instance *sgsn;
/* sgsn_vty.c */
int sgsn_vty_init(void);
int sgsn_parse_config(const char *config_file, struct sgsn_config *cfg);
/* sgsn.c */
/* Main input function for Gb proxy */
int sgsn_rcvmsg(struct msgb *msg, struct gprs_nsvc *nsvc, uint16_t ns_bvci);
struct sgsn_pdp_ctx *sgsn_create_pdp_ctx(struct sgsn_ggsn_ctx *ggsn,
struct sgsn_mm_ctx *mmctx,
uint16_t nsapi,
struct tlv_parsed *tp);
int sgsn_delete_pdp_ctx(struct sgsn_pdp_ctx *pctx);
/* gprs_sndcp.c */
/* Entry point for the SNSM-ACTIVATE.indication */
int sndcp_sm_activate_ind(struct gprs_llc_lle *lle, uint8_t nsapi);
/* Entry point for the SNSM-DEACTIVATE.indication */
int sndcp_sm_deactivate_ind(struct gprs_llc_lle *lle, uint8_t nsapi);
/* Called by SNDCP when it has received/re-assembled a N-PDU */
int sgsn_rx_sndcp_ud_ind(struct gprs_ra_id *ra_id, int32_t tlli, uint8_t nsapi,
struct msgb *msg, uint32_t npdu_len, uint8_t *npdu);
int sndcp_unitdata_req(struct msgb *msg, struct gprs_llc_lle *lle, uint8_t nsapi,
void *mmcontext);
int sndcp_llunitdata_ind(struct msgb *msg, struct gprs_llc_lle *lle,
uint8_t *hdr, uint16_t len);
#endif
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