sccp_sclc.c File Reference

#include <string.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/timer.h>
#include <osmocom/core/fsm.h>
#include <osmocom/sigtran/sccp_sap.h>
#include <osmocom/sigtran/protocol/sua.h>
#include <osmocom/sccp/sccp_types.h>
#include "xua_internal.h"
#include "sccp_internal.h"

Functions
static struct xua_msg *	xua_gen_msg_cl (uint32_t event, struct osmo_scu_prim *prim, int msg_type)
static int	xua_gen_encode_and_send (struct osmo_sccp_user *scu, uint32_t event, struct osmo_scu_prim *prim, int msg_type)
int	sccp_sclc_user_sap_down_nofree (struct osmo_sccp_user *scu, struct osmo_prim_hdr *oph)
	Main entrance function for primitives from SCCP User. More...
int	sccp_sclc_user_sap_down (struct osmo_sccp_user *scu, struct osmo_prim_hdr *oph)
	Main entrance function for primitives from SCCP User. More...
static int	sclc_rx_cldt (struct osmo_sccp_instance *inst, struct xua_msg *xua)
static int	sclc_rx_cldr (struct osmo_sccp_instance *inst, struct xua_msg *xua)
int	sccp_sclc_rx_from_scrc (struct osmo_sccp_instance *inst, struct xua_msg *xua)
	SCRC -> SCLC (connectionless message) More...
static struct xua_msg *	gen_ret_msg (struct osmo_sccp_instance *inst, const struct xua_msg *xua_in, uint32_t ret_cause)
void	sccp_sclc_rx_scrc_rout_fail (struct osmo_sccp_instance *inst, struct xua_msg *xua_in, uint32_t cause)
	SCRC -> SCLC (Routing Failure. More...

Function Documentation

gen_ret_msg()

static struct xua_msg* gen_ret_msg ( struct osmo_sccp_instance *  inst, const struct xua_msg *  xua_in, uint32_t  ret_cause  )

static

References xua_msg::hdr, OSMO_SCCP_ADDR_T_PC, OSMO_SCCP_RI_SSN_PC, osmo_sccp_addr::pc, osmo_sccp_addr::presence, osmo_sccp_addr::ri, osmo_sccp_instance::route_ctx, sua_addr_parse(), SUA_CAUSE_T_RETURN, SUA_CL_CLDR, SUA_IEI_CAUSE, SUA_IEI_CORR_ID, SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_IMPORTANCE, SUA_IEI_MSG_PRIO, SUA_IEI_ROUTE_CTX, SUA_IEI_SEGMENTATION, SUA_IEI_SRC_ADDR, SUA_MSGC_CL, XUA_HDR, xua_msg_add_sccp_addr(), xua_msg_add_u32(), xua_msg_alloc(), xua_msg_copy_part(), and xua_msg_free_tag().

Referenced by sccp_sclc_rx_scrc_rout_fail().

sccp_sclc_rx_from_scrc()

int sccp_sclc_rx_from_scrc	(	struct osmo_sccp_instance *	inst,
		struct xua_msg *	xua
	)

SCRC -> SCLC (connectionless message)

Parameters

[in]	inst	SCCP Instance in which we operate
[in]	xua	SUA connectionless message

Returns

0 on success; negative on error

References xua_msg::hdr, xua_common_hdr::msg_class, xua_common_hdr::msg_type, sclc_rx_cldr(), sclc_rx_cldt(), SUA_CL_CLDR, SUA_CL_CLDT, SUA_MSGC_CL, xua_dialect_sua, and xua_hdr_dump().

Referenced by scrc_node_6(), and scrc_translate_node_9().

sccp_sclc_rx_scrc_rout_fail()

void sccp_sclc_rx_scrc_rout_fail	(	struct osmo_sccp_instance *	inst,
		struct xua_msg *	xua_in,
		uint32_t	cause
	)

SCRC -> SCLC (Routing Failure.

Parameters

[in]	inst	SCCP Instance in which we operate
[in]	xua_in	Message that failed to be routed
[in]	cause	SCCP Return Cause

References gen_ret_msg(), xua_msg::hdr, xua_common_hdr::msg_type, xua_msg::mtp, osmo_mtp_transfer_param::opc, osmo_ss7_pc_is_local(), sccp_scrc_rx_sclc_msg(), sclc_rx_cldr(), osmo_sccp_instance::ss7, SUA_CL_CLDR, SUA_CL_CLDT, and xua_msg_free().

Referenced by scrc_node_4(), scrc_node_6(), and scrc_translate_node_9().

sccp_sclc_user_sap_down()

int sccp_sclc_user_sap_down	(	struct osmo_sccp_user *	scu,
		struct osmo_prim_hdr *	oph
	)

Main entrance function for primitives from SCCP User.

Implies a msgb_free(oph->msg), otherwise the same as sccp_sclc_user_sap_down_nofree().

Parameters

[in]	scu	SCCP User who is sending the primitive

References osmo_scu_prim::oph, and sccp_sclc_user_sap_down_nofree().

sccp_sclc_user_sap_down_nofree()

int sccp_sclc_user_sap_down_nofree	(	struct osmo_sccp_user *	scu,
		struct osmo_prim_hdr *	oph
	)

Main entrance function for primitives from SCCP User.

The caller is required to free oph->msg, otherwise the same as sccp_sclc_user_sap_down().

Parameters

[in]	scu	SCCP User who is sending the primitive

References osmo_scu_prim::oph, OSMO_SCU_PRIM_N_UNITDATA, osmo_scu_prim_name(), SUA_CL_CLDT, and xua_gen_encode_and_send().

Referenced by osmo_sccp_user_sap_down_nofree(), and sccp_sclc_user_sap_down().

sclc_rx_cldr()

static int sclc_rx_cldr ( struct osmo_sccp_instance *  inst, struct xua_msg *  xua  )

static

References osmo_scu_notice_param::called_addr, osmo_scu_notice_param::calling_addr, osmo_scu_notice_param::cause, xua_msg_part::dat, osmo_scu_notice_param::importance, xua_msg_part::len, osmo_scu_prim::notice, osmo_scu_prim::oph, OSMO_SCU_PRIM_N_NOTICE, osmo_sccp_addr::pc, sccp_msgb_alloc(), SCCP_SAP_USER, sccp_user_find(), sccp_user_prim_up(), osmo_sccp_addr::ssn, sua_addr_parse(), SUA_IEI_CAUSE, SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_IMPORTANCE, SUA_IEI_SRC_ADDR, osmo_scu_prim::u, xua_msg_find_tag(), and xua_msg_get_u32().

Referenced by sccp_sclc_rx_from_scrc(), and sccp_sclc_rx_scrc_rout_fail().

sclc_rx_cldt()

static int sclc_rx_cldt ( struct osmo_sccp_instance *  inst, struct xua_msg *  xua  )

static

References osmo_scu_unitdata_param::called_addr, osmo_scu_unitdata_param::calling_addr, xua_msg_part::dat, osmo_scu_unitdata_param::importance, osmo_scu_unitdata_param::in_sequence_control, xua_msg_part::len, osmo_scu_prim::oph, OSMO_SCU_PRIM_N_UNITDATA, osmo_sccp_addr::pc, osmo_scu_unitdata_param::return_option, sccp_msgb_alloc(), SCCP_SAP_USER, sccp_user_find(), sccp_user_prim_up(), osmo_sccp_addr::ssn, sua_addr_parse(), SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_IMPORTANCE, SUA_IEI_PROTO_CLASS, SUA_IEI_SEQ_CTRL, SUA_IEI_SRC_ADDR, osmo_scu_prim::u, osmo_scu_prim::unitdata, xua_msg_find_tag(), and xua_msg_get_u32().

Referenced by sccp_sclc_rx_from_scrc().

xua_gen_encode_and_send()

static int xua_gen_encode_and_send ( struct osmo_sccp_user *  scu, uint32_t  event, struct osmo_scu_prim *  prim, int  msg_type  )

static

References osmo_sccp_user::inst, sccp_scrc_rx_sclc_msg(), xua_gen_msg_cl(), and xua_msg_free().

Referenced by sccp_sclc_user_sap_down_nofree().

xua_gen_msg_cl()

static struct xua_msg* xua_gen_msg_cl ( uint32_t  event, struct osmo_scu_prim *  prim, int  msg_type  )

static

References osmo_scu_unitdata_param::called_addr, osmo_scu_unitdata_param::calling_addr, xua_msg::hdr, osmo_scu_unitdata_param::in_sequence_control, osmo_scu_prim::oph, SUA_CL_CLDT, SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_PROTO_CLASS, SUA_IEI_ROUTE_CTX, SUA_IEI_SEQ_CTRL, SUA_IEI_SRC_ADDR, SUA_MSGC_CL, osmo_scu_prim::u, osmo_scu_prim::unitdata, XUA_HDR, xua_msg_add_data(), xua_msg_add_sccp_addr(), xua_msg_add_u32(), xua_msg_alloc(), and xua_msg_free().

Referenced by xua_gen_encode_and_send().