sccp2sua.c File Reference

#include <stdbool.h>
#include <string.h>
#include <errno.h>
#include <inttypes.h>
#include <osmocom/sccp/sccp_types.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/core/logging.h>
#include <osmocom/sigtran/sccp_sap.h>
#include <osmocom/sigtran/sccp_helpers.h>
#include <osmocom/sigtran/protocol/sua.h>
#include "xua_msg.h"
#include "xua_internal.h"
#include "sccp_internal.h"

Macros
#define	MAX_IES   6
#define	NUM_SCCP_MSGT   (SCCP_MSG_TYPE_LUDTS+1)

Functions
static void	msgb_put_u24be (struct msgb *msg, uint32_t val)
static void	msgb_put_u16le (struct msgb *msg, uint16_t val)
static uint32_t	load_24be (const void *ptr)
	load a 24bit value as big-endian More...
int	osmo_isup_party_parse (char *out_digits, const uint8_t *in, unsigned int in_num_bytes, bool odd)
	Parse ISUP style address of BCD digets. More...
int	osmo_isup_party_encode (struct msgb *msg, const char *in_digits)
	Encode an ISUP style address of BCD digits. More...
int	osmo_sccp_addr_parse (struct osmo_sccp_addr *out, const uint8_t *addr, unsigned int addrlen)
	Parse wire-encoded SCCP address into osmo_sccp_addr. More...
int	osmo_sccp_addr_encode (struct msgb *msg, const struct osmo_sccp_addr *in)
	encode a SCCP address from parsed format to wire format More...
static int	sccp_addr_to_sua (struct xua_msg *xua, uint16_t iei, const uint8_t *addr, unsigned int addrlen)
	convert SCCP address to SUA address More...
static int	sccp_addr_to_sua_ptr (struct xua_msg *xua, uint16_t iei, const uint8_t *ptr_addr, bool ptr_addr_is_long)
	convenience wrapper around sccp_addr_to_sua() for variable mandatory addresses More...
static int	sua_addr_to_sccp (struct msgb *msg, const struct xua_msg_part *part)
	convert SUA address to SCCP address More...
static int	sccp_add_var_addr (struct msgb *msg, uint8_t *var_ptr, bool var_ptr_is_long, const struct xua_msg *xua, uint16_t iei)
	Add a "SCCP Variable Mandatory Part" (Address format) to the given msgb. More...
static int	sccp_add_variable_part (struct msgb *msg, uint8_t *var_ptr, const struct xua_msg *xua, uint16_t iei)
	Add a "SCCP Variable Mandatory Part" to the given msgb. More...
static int	sccp_add_long_variable_part (struct msgb *msg, uint8_t *var_ptr, const struct xua_msg *xua, uint16_t iei)
	Add a "SCCP Long Variable Mandatory Part" to the given msgb. More...
static bool	sccp_ptr_part_consistent (const struct msgb *msg, const uint8_t *ptr_addr)
	validate that SCCP part with pointer + length doesn't exceed msg tail More...
static bool	sccp_longptr_part_consistent (const struct msgb *msg, const uint8_t *ptr_addr, bool len_is_long)
	validate that SCCP part with long pointer (2 bytes) + length doesn't exceed msg tail More...
static int	sccp_data_to_sua_ptr (struct xua_msg *xua, uint16_t iei, const uint8_t *ptr_addr)
	convenience wrapper around xua_msg_add_data() for variable mandatory data More...
static int	sccp_longdata_to_sua_ptr (struct xua_msg *xua, uint16_t iei, const uint8_t *ptr_addr)
	convenience wrapper around xua_msg_add_data() for variable mandatory data More...
static int	xua_msg_add_sccp_opt (struct xua_msg *xua, uint8_t sccp_opt_type, uint16_t opt_len, const uint8_t *opt)
	Convert a given SCCP option to SUA and add it to given xua_msg. More...
static void	msgb_put_sccp_opt_hdr (struct msgb *msg, uint8_t pnc, uint8_t len)
	append a SCCP option header to the given message More...
static void	msgb_put_sccp_opt (struct msgb *msg, uint8_t pnc, uint8_t len, const uint8_t *data)
	append a SCCP option to the given message More...
static int	sccp_msg_add_sua_opt (enum sccp_message_types type, struct msgb *msg, const struct xua_msg_part *opt)
	Convert a given SUA option/IE to SCCP and add it to given * msgb. More...
static struct xua_msg *	sccp_to_xua_opt (const struct msgb *msg, const uint8_t *ptr_opt, bool ptr_opt_is_long, struct xua_msg *xua)
	convert SCCP optional part to list of SUA options More...
static bool	sccp_is_mandatory (enum sccp_message_types type, const struct xua_msg_part *part)
static bool	sccp_option_permitted (enum sccp_message_types type, const struct xua_msg_part *part)
static int	xua_ies_to_sccp_opts (struct msgb *msg, uint8_t *ptr_opt, bool ptr_opt_is_long, enum sccp_message_types type, const struct xua_msg *xua)
static int	store_local_ref (struct sccp_source_reference *local_ref, const struct xua_msg *xua, uint16_t iei)
static struct xua_msg *	sccp_to_xua_cr (const struct msgb *msg, struct xua_msg *xua)
static int	sua_to_sccp_cr (struct msgb *msg, const struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_cc (const struct msgb *msg, struct xua_msg *xua)
static int	sua_to_sccp_cc (struct msgb *msg, const struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_cref (const struct msgb *msg, struct xua_msg *xua)
static int	sua_to_sccp_cref (struct msgb *msg, const struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_rlsd (const struct msgb *msg, struct xua_msg *xua)
static int	sua_to_sccp_rlsd (struct msgb *msg, const struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_rlc (const struct msgb *msg, struct xua_msg *xua)
static int	sua_to_sccp_rlc (struct msgb *msg, const struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_dt1 (const struct msgb *msg, struct xua_msg *xua)
static int	sua_to_sccp_dt1 (struct msgb *msg, const struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_udt (const struct msgb *msg, struct xua_msg *xua)
static int	sua_to_sccp_xudt (struct msgb *msg, const struct xua_msg *xua)
static int	sua_to_sccp_ludt (struct msgb *msg, const struct xua_msg *xua)
static int	sua_to_sccp_udt (struct msgb *msg, const struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_xudt (const struct msgb *msg, struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_ludt (struct msgb *msg, struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_udts (const struct msgb *msg, struct xua_msg *xua)
static int	sua_to_sccp_xudts (struct msgb *msg, const struct xua_msg *xua)
static int	sua_to_sccp_ludts (struct msgb *msg, const struct xua_msg *xua)
static int	sua_to_sccp_udts (struct msgb *msg, const struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_xudts (const struct msgb *msg, struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_ludts (const struct msgb *msg, struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_it (const struct msgb *msg, struct xua_msg *xua)
static int	sua_to_sccp_it (struct msgb *msg, const struct xua_msg *xua)
static struct xua_msg *	sccp_to_xua_err (const struct msgb *msg, struct xua_msg *xua)
static int	sua_to_sccp_err (struct msgb *msg, const struct xua_msg *xua)
struct xua_msg *	osmo_sccp_to_xua (struct msgb *msg)
	convert SCCP message to a SUA message More...
struct msgb *	osmo_sua_to_sccp (struct xua_msg *xua)
	convert parsed SUA message to SCCP message More...

Variables
static const uint16_t	sccp_mandatory [NUM_SCCP_MSGT][MAX_IES]
static const uint16_t	sccp_optional [NUM_SCCP_MSGT][MAX_IES]

Macro Definition Documentation

MAX_IES

#define MAX_IES   6

NUM_SCCP_MSGT

#define NUM_SCCP_MSGT   (SCCP_MSG_TYPE_LUDTS+1)

Function Documentation

load_24be()

static uint32_t load_24be ( const void *  ptr )

static

load a 24bit value as big-endian

References data.

Referenced by sccp_to_xua_cc(), sccp_to_xua_cr(), sccp_to_xua_cref(), sccp_to_xua_dt1(), sccp_to_xua_err(), sccp_to_xua_it(), sccp_to_xua_rlc(), sccp_to_xua_rlsd(), and xua_msg_add_sccp_opt().

msgb_put_sccp_opt()

static void msgb_put_sccp_opt ( struct msgb *  msg, uint8_t  pnc, uint8_t  len, const uint8_t *  data  )

static

append a SCCP option to the given message

Parameters

	msg	Message to which option is to be appended
[in]	pnc	PNC of the option header
[in]	len	length of the option, excluding the header
[in]	data	actual data to be appended

References data, len, and msgb_put_sccp_opt_hdr().

Referenced by sccp_msg_add_sua_opt().

msgb_put_sccp_opt_hdr()

static void msgb_put_sccp_opt_hdr ( struct msgb *  msg, uint8_t  pnc, uint8_t  len  )

static

append a SCCP option header to the given message

Parameters

	msg	Message to which header is to be appended
[in]	pnc	PNC of the option header
[in]	len	length of the option, excluding the header

References len.

Referenced by msgb_put_sccp_opt(), and sccp_msg_add_sua_opt().

msgb_put_u16le()

static void msgb_put_u16le ( struct msgb *  msg, uint16_t  val  )

static

Referenced by osmo_sccp_addr_encode().

msgb_put_u24be()

static void msgb_put_u24be ( struct msgb *  msg, uint32_t  val  )

static

Referenced by sccp_msg_add_sua_opt().

osmo_isup_party_encode()

int osmo_isup_party_encode	(	struct msgb *	msg,
		const char *	in_digits
	)

Encode an ISUP style address of BCD digits.

Parameters

[out]	msg	Message to which the encoded address is appended
[in]	in_digits	NUL-terminated ASCII string of digits

Returns

number of octets used for encoding in_digits

Referenced by osmo_sccp_addr_encode().

osmo_isup_party_parse()

int osmo_isup_party_parse	(	char *	out_digits,
		const uint8_t *	in,
		unsigned int	in_num_bytes,
		bool	odd
	)

Parse ISUP style address of BCD digets.

Parameters

[out]	out_digits	user-allocated buffer for ASCII digits
[in]	in	BCD-encoded digits
[in]	in_num_bytes	Size of in in bytes
[in]	odd	Odd (true) or even (false) number of digits

Returns

number of digits generated

Referenced by osmo_sccp_addr_parse().

osmo_sccp_addr_encode()

int osmo_sccp_addr_encode	(	struct msgb *	msg,
		const struct osmo_sccp_addr *	in
	)

encode a SCCP address from parsed format to wire format

Parameters

[out]	msg	message buffer to which address is to be appended
[in]	in	data structure describing SCCP address

Returns

number of bytes written to msg

References osmo_sccp_gt::digits, osmo_sccp_addr::gt, osmo_sccp_gt::gti, msgb_put_u16le(), osmo_sccp_gt::nai, osmo_sccp_gt::npi, osmo_isup_party_encode(), OSMO_SCCP_ADDR_T_GT, OSMO_SCCP_ADDR_T_PC, OSMO_SCCP_ADDR_T_SSN, OSMO_SCCP_GTI_NAI_ONLY, OSMO_SCCP_GTI_NO_GT, OSMO_SCCP_GTI_TT_NPL_ENC, OSMO_SCCP_GTI_TT_NPL_ENC_NAI, OSMO_SCCP_GTI_TT_ONLY, OSMO_SCCP_RI_GT, OSMO_SCCP_RI_SSN_PC, osmo_sccp_addr::pc, osmo_sccp_addr::presence, osmo_sccp_addr::ri, osmo_sccp_addr::ssn, and osmo_sccp_gt::tt.

Referenced by sua_addr_to_sccp().

osmo_sccp_addr_parse()

int osmo_sccp_addr_parse	(	struct osmo_sccp_addr *	out,
		const uint8_t *	addr,
		unsigned int	addrlen
	)

Parse wire-encoded SCCP address into osmo_sccp_addr.

Parameters

[out]	out	user-allocated output data structure
[in]	addr	wire-encoded SCCP address
[in]	addrlen	Size of addr in bytes

Returns

0 in case of success, negative on error According to Q.713/3.4 and RFC3868/3.10.2

References osmo_sccp_gt::digits, osmo_sccp_addr::gt, osmo_sccp_gt::gti, osmo_sccp_gt::nai, osmo_sccp_gt::npi, osmo_isup_party_parse(), OSMO_SCCP_ADDR_T_GT, OSMO_SCCP_ADDR_T_PC, OSMO_SCCP_ADDR_T_SSN, OSMO_SCCP_GTI_NAI_ONLY, OSMO_SCCP_GTI_NO_GT, OSMO_SCCP_GTI_TT_NPL_ENC, OSMO_SCCP_GTI_TT_NPL_ENC_NAI, OSMO_SCCP_GTI_TT_ONLY, OSMO_SCCP_RI_GT, OSMO_SCCP_RI_SSN_PC, osmo_sccp_addr::pc, osmo_sccp_addr::presence, osmo_sccp_addr::ri, osmo_sccp_addr::ssn, and osmo_sccp_gt::tt.

Referenced by sccp_addr_to_sua().

osmo_sccp_to_xua()

struct xua_msg * osmo_sccp_to_xua

(

struct msgb *

msg

)

convert SCCP message to a SUA message

Parameters

[in]

msg

message buffer holding SCCP message at l2h

Returns

callee-allocated xUA message on success; NULL on error

References xua_msg::hdr, sccp_to_xua_cc(), sccp_to_xua_cr(), sccp_to_xua_cref(), sccp_to_xua_dt1(), sccp_to_xua_err(), sccp_to_xua_it(), sccp_to_xua_ludt(), sccp_to_xua_ludts(), sccp_to_xua_rlc(), sccp_to_xua_rlsd(), sccp_to_xua_udt(), sccp_to_xua_udts(), sccp_to_xua_xudt(), sccp_to_xua_xudts(), SUA_CL_CLDR, SUA_CL_CLDT, SUA_CO_COAK, SUA_CO_CODT, SUA_CO_COERR, SUA_CO_COIT, SUA_CO_CORE, SUA_CO_COREF, SUA_CO_RELCO, SUA_CO_RELRE, SUA_MSGC_CL, SUA_MSGC_CO, XUA_HDR, xua_msg_alloc(), and xua_msg_free().

Referenced by mtp_user_prim_cb(), and patch_sccp_with_pc().

osmo_sua_to_sccp()

struct msgb * osmo_sua_to_sccp

(

struct xua_msg *

xua

)

convert parsed SUA message to SCCP message

Parameters

[in]

xua

parsed SUA message to be converted

Returns

callee-allocated msgb containing encoded SCCP message

References xua_msg::hdr, xua_common_hdr::msg_class, xua_common_hdr::msg_type, sccp_msgb_alloc(), SUA_CL_CLDR, SUA_CL_CLDT, SUA_CO_COAK, SUA_CO_CODT, SUA_CO_COERR, SUA_CO_COIT, SUA_CO_CORE, SUA_CO_COREF, SUA_CO_RELCO, SUA_CO_RELRE, SUA_MSGC_CL, SUA_MSGC_CO, sua_to_sccp_cc(), sua_to_sccp_cr(), sua_to_sccp_cref(), sua_to_sccp_dt1(), sua_to_sccp_err(), sua_to_sccp_it(), sua_to_sccp_rlc(), sua_to_sccp_rlsd(), sua_to_sccp_udt(), sua_to_sccp_udts(), xua_dialect_sua, and xua_hdr_dump().

Referenced by patch_sccp_with_pc(), and sua2sccp_tx_m3ua().

sccp_add_long_variable_part()

static int sccp_add_long_variable_part ( struct msgb *  msg, uint8_t *  var_ptr, const struct xua_msg *  xua, uint16_t  iei  )

static

Add a "SCCP Long Variable Mandatory Part" to the given msgb.

Parameters

	msg	Message buffer to which part shall be added
[out]	var_ptr	pointer to relative pointer in SCCP header
[in]	xua	xUA message from which to use source data
[in]	iei	xUA information element identifier of source data

References xua_msg_part::dat, xua_msg_part::len, and xua_msg_find_tag().

Referenced by sua_to_sccp_ludt(), and sua_to_sccp_ludts().

sccp_add_var_addr()

static int sccp_add_var_addr ( struct msgb *  msg, uint8_t *  var_ptr, bool  var_ptr_is_long, const struct xua_msg *  xua, uint16_t  iei  )

static

Add a "SCCP Variable Mandatory Part" (Address format) to the given msgb.

Parameters

	msg	Message buffer to which part shall be added
[out]	var_ptr	pointer to relative pointer in SCCP header
[in]	var_ptr_is_long	Whether the var_ptr field is 2 bytes long (network order)
[in]	xua	xUA message from which to use address
[in]	iei	xUA information element identifier of address

References sua_addr_to_sccp(), and xua_msg_find_tag().

Referenced by sua_to_sccp_cr(), sua_to_sccp_ludt(), sua_to_sccp_ludts(), sua_to_sccp_udt(), sua_to_sccp_udts(), sua_to_sccp_xudt(), and sua_to_sccp_xudts().

sccp_add_variable_part()

static int sccp_add_variable_part ( struct msgb *  msg, uint8_t *  var_ptr, const struct xua_msg *  xua, uint16_t  iei  )

static

Add a "SCCP Variable Mandatory Part" to the given msgb.

Parameters

	msg	Message buffer to which part shall be added
[out]	var_ptr	pointer to relative pointer in SCCP header
[in]	xua	xUA message from which to use source data
[in]	iei	xUA information element identifier of source data

References xua_msg_part::dat, xua_msg_part::len, and xua_msg_find_tag().

Referenced by sua_to_sccp_dt1(), sua_to_sccp_udt(), sua_to_sccp_udts(), sua_to_sccp_xudt(), and sua_to_sccp_xudts().

sccp_addr_to_sua()

static int sccp_addr_to_sua ( struct xua_msg *  xua, uint16_t  iei, const uint8_t *  addr, unsigned int  addrlen  )

static

convert SCCP address to SUA address

Parameters

	xua	user-provided xUA message to which address shall be added
[in]	iei	SUA Information Element Identifier for address
[in]	addr	SCCP wire format binary address
[in]	addrlen	Size of addr in bytes

Returns

0 in case of success; negative on error

References osmo_sccp_addr_dump(), osmo_sccp_addr_parse(), and xua_msg_add_sccp_addr().

Referenced by sccp_addr_to_sua_ptr(), and xua_msg_add_sccp_opt().

sccp_addr_to_sua_ptr()

static int sccp_addr_to_sua_ptr ( struct xua_msg *  xua, uint16_t  iei, const uint8_t *  ptr_addr, bool  ptr_addr_is_long  )

static

convenience wrapper around sccp_addr_to_sua() for variable mandatory addresses

References sccp_addr_to_sua().

Referenced by sccp_to_xua_cr(), sccp_to_xua_ludt(), sccp_to_xua_ludts(), sccp_to_xua_udt(), sccp_to_xua_udts(), sccp_to_xua_xudt(), and sccp_to_xua_xudts().

sccp_data_to_sua_ptr()

static int sccp_data_to_sua_ptr ( struct xua_msg *  xua, uint16_t  iei, const uint8_t *  ptr_addr  )

static

convenience wrapper around xua_msg_add_data() for variable mandatory data

References xua_msg_add_data().

Referenced by sccp_to_xua_dt1(), sccp_to_xua_udt(), sccp_to_xua_udts(), sccp_to_xua_xudt(), and sccp_to_xua_xudts().

sccp_is_mandatory()

static bool sccp_is_mandatory ( enum sccp_message_types  type, const struct xua_msg_part *  part  )

static

References MAX_IES, sccp_mandatory, and xua_msg_part::tag.

Referenced by xua_ies_to_sccp_opts().

sccp_longdata_to_sua_ptr()

static int sccp_longdata_to_sua_ptr ( struct xua_msg *  xua, uint16_t  iei, const uint8_t *  ptr_addr  )

static

convenience wrapper around xua_msg_add_data() for variable mandatory data

References xua_msg_add_data().

Referenced by sccp_to_xua_ludt(), and sccp_to_xua_ludts().

sccp_longptr_part_consistent()

static bool sccp_longptr_part_consistent ( const struct msgb *  msg, const uint8_t *  ptr_addr, bool  len_is_long  )

static

validate that SCCP part with long pointer (2 bytes) + length doesn't exceed msg tail

Parameters

[in]	msg	Message containing SCCP address (LUDT or LUDTS)
[in]	ptr_addr	pointer to byte with relative SCCP long pointer (uint16_t, 2 bytes in network order)
[in]	len_is_long	whether the length field at the starting of the value field pointer to by ptr_addr is 2 bytes long.

Returns

true if OK; false if message inconsistent

References data, and len.

Referenced by sccp_to_xua_ludt(), and sccp_to_xua_ludts().

sccp_msg_add_sua_opt()

static int sccp_msg_add_sua_opt ( enum sccp_message_types  type, struct msgb *  msg, const struct xua_msg_part *  opt  )

static

Convert a given SUA option/IE to SCCP and add it to given * msgb.

Parameters

	msg	caller-provided message buffer to which option is to be appended
[in]	opt	xUA option/IE (messge part) to be converted+added

Returns

0 in case of success; negative on error

References xua_msg_part::dat, xua_msg_part::len, msgb_put_sccp_opt(), msgb_put_sccp_opt_hdr(), msgb_put_u24be(), sua_addr_to_sccp(), SUA_CAUSE_T_ERROR, SUA_CAUSE_T_MASK, SUA_CAUSE_T_REFUSAL, SUA_CAUSE_T_RELEASE, SUA_CAUSE_T_RESET, SUA_CAUSE_T_RETURN, SUA_IEI_CAUSE, SUA_IEI_CREDIT, SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_DEST_REF, SUA_IEI_IMPORTANCE, SUA_IEI_PROTO_CLASS, SUA_IEI_ROUTE_CTX, SUA_IEI_S7_HOP_CTR, SUA_IEI_SEQ_CTRL, SUA_IEI_SRC_ADDR, SUA_IEI_SRC_REF, xua_msg_part::tag, and xua_msg_part_get_u32().

Referenced by xua_ies_to_sccp_opts().

sccp_option_permitted()

static bool sccp_option_permitted ( enum sccp_message_types  type, const struct xua_msg_part *  part  )

static

References MAX_IES, sccp_optional, and xua_msg_part::tag.

Referenced by xua_ies_to_sccp_opts().

sccp_ptr_part_consistent()

static bool sccp_ptr_part_consistent ( const struct msgb *  msg, const uint8_t *  ptr_addr  )

static

validate that SCCP part with pointer + length doesn't exceed msg tail

Parameters

[in]	msg	Message containing SCCP address
[in]	ptr_addr	pointer to byte with relative SCCP pointer

Returns

true if OK; false if message inconsistent

References data.

Referenced by sccp_to_xua_cr(), sccp_to_xua_dt1(), sccp_to_xua_udt(), sccp_to_xua_udts(), sccp_to_xua_xudt(), and sccp_to_xua_xudts().

sccp_to_xua_cc()

static struct xua_msg * sccp_to_xua_cc ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References load_24be(), sccp_to_xua_opt(), SUA_IEI_DEST_REF, SUA_IEI_PROTO_CLASS, SUA_IEI_SRC_REF, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_cr()

static struct xua_msg * sccp_to_xua_cr ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References load_24be(), sccp_addr_to_sua_ptr(), sccp_ptr_part_consistent(), sccp_to_xua_opt(), SUA_IEI_DEST_ADDR, SUA_IEI_PROTO_CLASS, SUA_IEI_SRC_REF, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_cref()

static struct xua_msg * sccp_to_xua_cref ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References load_24be(), sccp_to_xua_opt(), SUA_CAUSE_T_REFUSAL, SUA_IEI_CAUSE, SUA_IEI_DEST_REF, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_dt1()

static struct xua_msg * sccp_to_xua_dt1 ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References load_24be(), sccp_data_to_sua_ptr(), sccp_ptr_part_consistent(), SUA_IEI_DATA, SUA_IEI_DEST_REF, SUA_IEI_SEGMENTATION, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_err()

static struct xua_msg * sccp_to_xua_err ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References load_24be(), SUA_CAUSE_T_ERROR, SUA_IEI_CAUSE, SUA_IEI_DEST_REF, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_it()

static struct xua_msg * sccp_to_xua_it ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References load_24be(), SUA_IEI_CREDIT, SUA_IEI_DEST_REF, SUA_IEI_PROTO_CLASS, SUA_IEI_SRC_REF, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_ludt()

static struct xua_msg * sccp_to_xua_ludt ( struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References sccp_addr_to_sua_ptr(), sccp_longdata_to_sua_ptr(), sccp_longptr_part_consistent(), sccp_to_xua_opt(), SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_PROTO_CLASS, SUA_IEI_S7_HOP_CTR, SUA_IEI_SRC_ADDR, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_ludts()

static struct xua_msg * sccp_to_xua_ludts ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References sccp_addr_to_sua_ptr(), sccp_longdata_to_sua_ptr(), sccp_longptr_part_consistent(), sccp_to_xua_opt(), SUA_CAUSE_T_RETURN, SUA_IEI_CAUSE, SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_S7_HOP_CTR, SUA_IEI_SRC_ADDR, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_opt()

static struct xua_msg * sccp_to_xua_opt ( const struct msgb *  msg, const uint8_t *  ptr_opt, bool  ptr_opt_is_long, struct xua_msg *  xua  )

static

convert SCCP optional part to list of SUA options

Parameters

[in]	msg	Message buffer holding SCCP message
[in]	ptr_opt	address of relative pointer to optional part
[in]	ptr_opt_is_long	whether ptr_opt is a long pointer (2 bytes, network order)
	xua	caller-provided xUA message to which options are added

Returns

xua in case of success, NULL on error (xua not freed!)

References data, and xua_msg_add_sccp_opt().

Referenced by sccp_to_xua_cc(), sccp_to_xua_cr(), sccp_to_xua_cref(), sccp_to_xua_ludt(), sccp_to_xua_ludts(), sccp_to_xua_rlsd(), sccp_to_xua_xudt(), and sccp_to_xua_xudts().

sccp_to_xua_rlc()

static struct xua_msg * sccp_to_xua_rlc ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References load_24be(), SUA_IEI_DEST_REF, SUA_IEI_SRC_REF, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_rlsd()

static struct xua_msg * sccp_to_xua_rlsd ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References load_24be(), sccp_to_xua_opt(), SUA_CAUSE_T_RELEASE, SUA_IEI_CAUSE, SUA_IEI_DEST_REF, SUA_IEI_SRC_REF, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_udt()

static struct xua_msg * sccp_to_xua_udt ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References sccp_addr_to_sua_ptr(), sccp_data_to_sua_ptr(), sccp_ptr_part_consistent(), SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_PROTO_CLASS, SUA_IEI_SRC_ADDR, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_udts()

static struct xua_msg * sccp_to_xua_udts ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References sccp_addr_to_sua_ptr(), sccp_data_to_sua_ptr(), sccp_ptr_part_consistent(), SUA_CAUSE_T_RETURN, SUA_IEI_CAUSE, SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_SRC_ADDR, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_xudt()

static struct xua_msg * sccp_to_xua_xudt ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References sccp_addr_to_sua_ptr(), sccp_data_to_sua_ptr(), sccp_ptr_part_consistent(), sccp_to_xua_opt(), SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_PROTO_CLASS, SUA_IEI_S7_HOP_CTR, SUA_IEI_SRC_ADDR, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

sccp_to_xua_xudts()

static struct xua_msg * sccp_to_xua_xudts ( const struct msgb *  msg, struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References sccp_addr_to_sua_ptr(), sccp_data_to_sua_ptr(), sccp_ptr_part_consistent(), sccp_to_xua_opt(), SUA_CAUSE_T_RETURN, SUA_IEI_CAUSE, SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_S7_HOP_CTR, SUA_IEI_SRC_ADDR, and xua_msg_add_u32().

Referenced by osmo_sccp_to_xua().

store_local_ref()

static int store_local_ref ( struct sccp_source_reference *  local_ref, const struct xua_msg *  xua, uint16_t  iei  )

static

References xua_msg_get_u32().

Referenced by sua_to_sccp_cc(), sua_to_sccp_cr(), sua_to_sccp_cref(), sua_to_sccp_dt1(), sua_to_sccp_err(), sua_to_sccp_it(), sua_to_sccp_rlc(), and sua_to_sccp_rlsd().

sua_addr_to_sccp()

static int sua_addr_to_sccp ( struct msgb *  msg, const struct xua_msg_part *  part  )

static

convert SUA address to SCCP address

Parameters

	msg	user-provided message buffer to which address shall be * appended
[in]	part	SUA wire format binary address

Returns

0 in case of success; negative on error

References osmo_sccp_addr_encode(), and sua_addr_parse_part().

Referenced by sccp_add_var_addr(), and sccp_msg_add_sua_opt().

sua_to_sccp_cc()

static int sua_to_sccp_cc ( struct msgb *  msg, const struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References store_local_ref(), SUA_IEI_DEST_REF, SUA_IEI_PROTO_CLASS, SUA_IEI_SRC_REF, xua_ies_to_sccp_opts(), and xua_msg_get_u32().

Referenced by osmo_sua_to_sccp().

sua_to_sccp_cr()

static int sua_to_sccp_cr ( struct msgb *  msg, const struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References sccp_add_var_addr(), store_local_ref(), SUA_IEI_DEST_ADDR, SUA_IEI_PROTO_CLASS, SUA_IEI_SRC_REF, xua_ies_to_sccp_opts(), and xua_msg_get_u32().

Referenced by osmo_sua_to_sccp().

sua_to_sccp_cref()

static int sua_to_sccp_cref ( struct msgb *  msg, const struct xua_msg *  xua  )

static

Returns

xua in case of success, NULL on error (xua not freed!)

References store_local_ref(), SUA_IEI_CAUSE, SUA_IEI_DEST_REF, xua_ies_to_sccp_opts(), and xua_msg_get_u32().

Referenced by osmo_sua_to_sccp().

sua_to_sccp_dt1()

static int sua_to_sccp_dt1 ( struct msgb *  msg, const struct xua_msg *  xua  )

static

References sccp_add_variable_part(), store_local_ref(), SUA_IEI_DATA, SUA_IEI_DEST_REF, SUA_IEI_SEGMENTATION, and xua_msg_get_u32().

Referenced by osmo_sua_to_sccp().

sua_to_sccp_err()

static int sua_to_sccp_err ( struct msgb *  msg, const struct xua_msg *  xua  )

static

References store_local_ref(), SUA_IEI_CAUSE, SUA_IEI_DEST_REF, and xua_msg_get_u32().

Referenced by osmo_sua_to_sccp().

sua_to_sccp_it()

static int sua_to_sccp_it ( struct msgb *  msg, const struct xua_msg *  xua  )

static

References store_local_ref(), SUA_IEI_CREDIT, SUA_IEI_DEST_REF, SUA_IEI_PROTO_CLASS, SUA_IEI_SRC_REF, and xua_msg_get_u32().

Referenced by osmo_sua_to_sccp().

sua_to_sccp_ludt()

static int sua_to_sccp_ludt ( struct msgb *  msg, const struct xua_msg *  xua  )

static

References sccp_add_long_variable_part(), sccp_add_var_addr(), SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_PROTO_CLASS, SUA_IEI_S7_HOP_CTR, SUA_IEI_SRC_ADDR, xua_ies_to_sccp_opts(), and xua_msg_get_u32().

Referenced by sua_to_sccp_udt(), and sua_to_sccp_xudt().

sua_to_sccp_ludts()

static int sua_to_sccp_ludts ( struct msgb *  msg, const struct xua_msg *  xua  )

static

References sccp_add_long_variable_part(), sccp_add_var_addr(), SUA_IEI_CAUSE, SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_S7_HOP_CTR, SUA_IEI_SRC_ADDR, xua_ies_to_sccp_opts(), and xua_msg_get_u32().

Referenced by sua_to_sccp_udts().

sua_to_sccp_rlc()

static int sua_to_sccp_rlc ( struct msgb *  msg, const struct xua_msg *  xua  )

static

References store_local_ref(), SUA_IEI_DEST_REF, and SUA_IEI_SRC_REF.

Referenced by osmo_sua_to_sccp().

sua_to_sccp_rlsd()

static int sua_to_sccp_rlsd ( struct msgb *  msg, const struct xua_msg *  xua  )

static

References store_local_ref(), SUA_IEI_CAUSE, SUA_IEI_DEST_REF, SUA_IEI_SRC_REF, xua_ies_to_sccp_opts(), and xua_msg_get_u32().

Referenced by osmo_sua_to_sccp().

sua_to_sccp_udt()

static int sua_to_sccp_udt ( struct msgb *  msg, const struct xua_msg *  xua  )

static

References sccp_add_var_addr(), sccp_add_variable_part(), SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_PROTO_CLASS, SUA_IEI_S7_HOP_CTR, SUA_IEI_SRC_ADDR, sua_to_sccp_ludt(), sua_to_sccp_xudt(), xua_msg_find_tag(), xua_msg_get_len(), and xua_msg_get_u32().

Referenced by osmo_sua_to_sccp().

sua_to_sccp_udts()

static int sua_to_sccp_udts ( struct msgb *  msg, const struct xua_msg *  xua  )

static

References sccp_add_var_addr(), sccp_add_variable_part(), SUA_IEI_CAUSE, SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_S7_HOP_CTR, SUA_IEI_SRC_ADDR, sua_to_sccp_ludts(), sua_to_sccp_xudts(), xua_msg_find_tag(), xua_msg_get_len(), and xua_msg_get_u32().

Referenced by osmo_sua_to_sccp().

sua_to_sccp_xudt()

static int sua_to_sccp_xudt ( struct msgb *  msg, const struct xua_msg *  xua  )

static

References sccp_add_var_addr(), sccp_add_variable_part(), SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_PROTO_CLASS, SUA_IEI_S7_HOP_CTR, SUA_IEI_SRC_ADDR, sua_to_sccp_ludt(), xua_ies_to_sccp_opts(), xua_msg_get_len(), and xua_msg_get_u32().

Referenced by sua_to_sccp_udt().

sua_to_sccp_xudts()

static int sua_to_sccp_xudts ( struct msgb *  msg, const struct xua_msg *  xua  )

static

References sccp_add_var_addr(), sccp_add_variable_part(), SUA_IEI_CAUSE, SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_S7_HOP_CTR, SUA_IEI_SRC_ADDR, xua_ies_to_sccp_opts(), and xua_msg_get_u32().

Referenced by sua_to_sccp_udts().

xua_ies_to_sccp_opts()

static int xua_ies_to_sccp_opts ( struct msgb *  msg, uint8_t *  ptr_opt, bool  ptr_opt_is_long, enum sccp_message_types  type, const struct xua_msg *  xua  )

static

References xua_msg_part::entry, xua_msg::headers, sccp_is_mandatory(), sccp_msg_add_sua_opt(), and sccp_option_permitted().

Referenced by sua_to_sccp_cc(), sua_to_sccp_cr(), sua_to_sccp_cref(), sua_to_sccp_ludt(), sua_to_sccp_ludts(), sua_to_sccp_rlsd(), sua_to_sccp_xudt(), and sua_to_sccp_xudts().

xua_msg_add_sccp_opt()

static int xua_msg_add_sccp_opt ( struct xua_msg *  xua, uint8_t  sccp_opt_type, uint16_t  opt_len, const uint8_t *  opt  )

static

Convert a given SCCP option to SUA and add it to given xua_msg.

Parameters

	xua	caller-provided xUA message to which option is to be added
[in]	sccp_opt_type	SCCP option type (PNC)
[in]	opt_len	size of opt in bytes
[in]	opt	pointer to wire-format encoded SCCP option data

Returns

0 in case of success; negative on error

References load_24be(), sccp_addr_to_sua(), SUA_CAUSE_T_ERROR, SUA_CAUSE_T_REFUSAL, SUA_CAUSE_T_RELEASE, SUA_CAUSE_T_RESET, SUA_CAUSE_T_RETURN, SUA_IEI_CAUSE, SUA_IEI_DATA, SUA_IEI_DEST_ADDR, SUA_IEI_DEST_REF, SUA_IEI_IMPORTANCE, SUA_IEI_PROTO_CLASS, SUA_IEI_S7_HOP_CTR, SUA_IEI_SRC_ADDR, SUA_IEI_SRC_REF, xua_msg_add_data(), and xua_msg_add_u32().

Referenced by sccp_to_xua_opt().

Variable Documentation

sccp_mandatory

const uint16_t sccp_mandatory[NUM_SCCP_MSGT][MAX_IES]

static

Referenced by sccp_is_mandatory().

sccp_optional

const uint16_t sccp_optional[NUM_SCCP_MSGT][MAX_IES]

static

Referenced by sccp_option_permitted().