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#pragma once
#include <stdint.h>
#include <osmocom/core/prim.h>
#include <osmocom/gsm/protocol/gsm_25_415.h>
/***********************************************************************
* Primitives towards the lower layers (typically RTP transport)
***********************************************************************/
enum osmo_iuup_tnl_prim_type {
OSMO_IUUP_TNL_UNITDATA,
};
struct osmo_iuup_tnl_prim {
struct osmo_prim_hdr oph;
};
/***********************************************************************
* Primitives towards the upper layers at the RNL SAP
***********************************************************************/
/* 3GPP TS 25.415 Section 7.2.1 */
enum osmo_iuup_rnl_prim_type {
OSMO_IUUP_RNL_CONFIG,
OSMO_IUUP_RNL_DATA,
OSMO_IUUP_RNL_STATUS,
OSMO_IUUP_RNL_UNIT_DATA,
};
/* TS 25.413 9.2.1.3*/
#define IUUP_MAX_SUBFLOWS 7
#define IUUP_MAX_RFCIS 64
#define IUUP_TIMER_INIT_T_DEFAULT 1000
#define IUUP_TIMER_TA_T_DEFAULT 500
#define IUUP_TIMER_RC_T_DEFAULT 500
#define IUUP_TIMER_INIT_N_DEFAULT 3
#define IUUP_TIMER_TA_N_DEFAULT 1
#define IUUP_TIMER_RC_N_DEFAULT 1
struct osmo_iuup_rnl_config_timer {
uint32_t t_ms; /* time in ms */
uint32_t n_max; /* max number of repetitions */
};
struct osmo_iuup_rfci {
uint8_t used:1,
spare1:1,
id:6;
uint8_t spare2:4,
IPTI:4; /* values range 0-15, 4 bits */;
uint16_t subflow_sizes[IUUP_MAX_SUBFLOWS];
};
struct osmo_iuup_rnl_config {
/* transparent (true) or SMpSDU (false): */
bool transparent;
/* should we actively transmit INIT in SmpSDU mode? */
bool active;
/* Currently Version 0 or 1: */
uint8_t data_pdu_type;
/* Supported mode versions */
uint16_t supported_versions_mask;
uint8_t num_rfci;
uint8_t num_subflows;
bool IPTIs_present;
struct osmo_iuup_rfci rfci[IUUP_MAX_RFCIS];
/* TODO: Indication of delivery of erroneous SDUs*/
struct osmo_iuup_rnl_config_timer t_init;
struct osmo_iuup_rnl_config_timer t_ta;
struct osmo_iuup_rnl_config_timer t_rc;
};
struct osmo_iuup_rnl_data {
uint8_t rfci;
uint8_t frame_nr;
uint8_t fqc;
};
struct osmo_iuup_rnl_status {
enum iuup_procedure procedure;
union {
struct {
enum iuup_error_cause cause;
enum iuup_error_distance distance;
} error_event;
struct {
uint16_t mode_version;
uint8_t data_pdu_type;
uint8_t num_rfci;
uint8_t num_subflows;
bool IPTIs_present;
struct osmo_iuup_rfci rfci[IUUP_MAX_RFCIS];
} initialization;
struct {
} rate_control;
struct {
} time_alignment;
} u;
};
/* SAP on the upper side of IuUP, towards the user */
struct osmo_iuup_rnl_prim {
struct osmo_prim_hdr oph;
union {
struct osmo_iuup_rnl_config config;
struct osmo_iuup_rnl_data data;
struct osmo_iuup_rnl_status status;
//struct osmo_iuup_rnl_unitdata unitdata;
} u;
};
struct osmo_iuup_instance;
struct osmo_iuup_instance *osmo_iuup_instance_alloc(void *ctx, const char *id);
void osmo_iuup_instance_free(struct osmo_iuup_instance *iui);
void osmo_iuup_instance_set_user_prim_cb(struct osmo_iuup_instance *iui, osmo_prim_cb func, void *priv);
void osmo_iuup_instance_set_transport_prim_cb(struct osmo_iuup_instance *iui, osmo_prim_cb func, void *priv);
int osmo_iuup_tnl_prim_up(struct osmo_iuup_instance *iui, struct osmo_iuup_tnl_prim *itp);
int osmo_iuup_rnl_prim_down(struct osmo_iuup_instance *inst, struct osmo_iuup_rnl_prim *irp);
int osmo_iuup_compute_header_crc(const uint8_t *iuup_pdu, unsigned int pdu_len);
int osmo_iuup_compute_payload_crc(const uint8_t *iuup_pdu, unsigned int pdu_len);
struct osmo_iuup_rnl_prim *osmo_iuup_rnl_prim_alloc(void *ctx, unsigned int primitive, unsigned int operation, unsigned int size);
struct osmo_iuup_tnl_prim *osmo_iuup_tnl_prim_alloc(void *ctx, unsigned int primitive, unsigned int operation, unsigned int size);
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