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/* Q.701-Q.704, Q.706, Q.707 handling code */
/*
* (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2010 by On-Waves
* All Rights Reserved
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef mtp_level3_h
#define mtp_level3_h
#include <stdint.h>
#include <endian.h>
#include <sys/types.h>
/*
* pssible service information octets..
*/
#define MTP_NI_NATION_NET 0x02
#define MTP_SI_MNT_SNM_MSG 0x00
#define MTP_SI_MNT_REG_MSG 0x01
#define MTP_SI_MNT_SCCP 0x03
#define MTP_SI_MNT_ISUP 0x05
/*
* h0 contains the group, h1 the semantic of it
*/
#define MTP_TST_MSG_GRP 0x01
#define MTP_PROHIBIT_MSG_GRP 0x04
#define MTP_SROUTE_MSG_GRP 0x05
#define MTP_TRF_RESTR_MSG_GRP 0x07
/* h1 values for different groups */
#define MTP_TST_MSG_SLTM 0x01
#define MTP_TST_MSG_SLTA 0x02
#define MTP_RESTR_MSG_ALLWED 0x01
/* For the prohibit group */
#define MTP_PROHIBIT_MSG_SIG 0x01
#define MTP_PROHIBIT_MSG_TFA 0x05
/* For the Signalling-route-set-test */
#define MTP_SROUTE_MSG_TEST 0x01
#define SCCP_SST 0x03
#define SCCP_SSP 0x02
#define SCCP_SSA 0x01
#define MTP_LINK_MASK 0x0F
#define MTP_ADDR_MASK 0x3FFF
#define MTP_APOC_MASK 0x3f
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define MTP_LINK_SLS(addr) ((addr >>28) & MTP_LINK_MASK)
#define MTP_ADDR(link, dpc, opc) \
(((dpc) & MTP_ADDR_MASK) << 0 | \
((opc) & MTP_ADDR_MASK) << 14| \
((link) & MTP_LINK_MASK) << 28)
#define MTP_MAKE_APOC(apoc) \
(apoc & 0x3fff)
#define MTP_ADDR_DPC(addr) \
(addr & MTP_ADDR_MASK)
#define MTP_ADDR_OPC(addr) \
((addr >> 14) & MTP_ADDR_MASK)
#elif __BYTE_ORDER == __BIG_ENDIAN
static inline uint32_t c_swap_32(uint32_t in)
{
return (((in & 0x000000ff) << 24) |
((in & 0x0000ff00) << 8) |
((in & 0x00ff0000) >> 8) |
((in & 0xff000000) >> 24));
}
static inline uint16_t c_swap_16(uint16_t in)
{
return (((in & 0x00ff) << 8) |
(in & 0xff00) >> 8);
}
#define MTP_LINK_SLS(addr) ((c_swap_32(addr)>>28) & MTP_LINK_MASK)
#define MTP_ADDR(link, dpc, opc) \
c_swap_32(((dpc) & MTP_ADDR_MASK) << 0 | \
((opc) & MTP_ADDR_MASK) << 14| \
((link) & MTP_LINK_MASK) << 28)
#define MTP_MAKE_APOC(apoc) \
c_swap_16((apoc & 0x3fff))
#define MTP_ADDR_DPC(addr) \
(c_swap_32(addr) & MTP_ADDR_MASK)
#define MTP_ADDR_OPC(addr) \
((c_swap_32(addr) >> 14) & MTP_ADDR_MASK)
#endif
/*
* not the on wire address...
*/
struct mtp_addr {
uint16_t dpc;
uint16_t opc;
uint8_t link;
} __attribute__((packed));
/*
* the struct is defined in Q.704 and can be seen in the
* wireshark dissectors too
*/
struct mtp_level_3_hdr {
#if __BYTE_ORDER == __LITTLE_ENDIAN
uint8_t ser_ind : 4,
spare : 2,
ni : 2;
#elif __BYTE_ORDER == __BIG_ENDIAN
uint8_t ni : 2,
spare : 2,
ser_ind : 4;
#endif
uint32_t addr;
uint8_t data[0];
} __attribute__((packed));
struct mtp_level_3_cmn {
#if __BYTE_ORDER == __LITTLE_ENDIAN
uint8_t h0 : 4,
h1 : 4;
#elif __BYTE_ORDER == __BIG_ENDIAN
uint8_t h1 : 4,
h0 : 4;
#endif
} __attribute__((packed));
struct mtp_level_3_mng {
struct mtp_level_3_cmn cmn;
#if __BYTE_ORDER == __LITTLE_ENDIAN
uint8_t spare : 4,
length : 4;
#elif __BYTE_ORDER == __BIG_ENDIAN
uint8_t length : 4,
spare : 4;
#endif
uint8_t data[0];
} __attribute__((packed));
struct mtp_level_3_prohib {
struct mtp_level_3_cmn cmn;
uint16_t apoc;
} __attribute__((packed));
struct sccp_con_ctrl_prt_mgt {
uint8_t sst;
uint8_t assn; /* affected sub system number */
uint16_t apoc;
#if __BYTE_ORDER == __LITTLE_ENDIAN
uint8_t mul_ind : 2,
spare : 6;
#elif __BYTE_ORDER == __BIG_ENDIAN
uint8_t spare : 6,
mul_ind : 2;
#endif
} __attribute__((packed));
#endif
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