167 lines
3.8 KiB
C
167 lines
3.8 KiB
C
/* Q.701-Q.704, Q.706, Q.707 handling code */
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/*
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* (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
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* (C) 2010 by On-Waves
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* All Rights Reserved
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef mtp_level3_h
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#define mtp_level3_h
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#include <stdint.h>
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#include <endian.h>
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#include <sys/types.h>
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/*
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* pssible service information octets..
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*/
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#define MTP_NI_NATION_NET 0x02
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#define MTP_SI_MNT_SNM_MSG 0x00
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#define MTP_SI_MNT_REG_MSG 0x01
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#define MTP_SI_MNT_SCCP 0x03
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#define MTP_SI_MNT_ISUP 0x05
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/*
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* h0 contains the group, h1 the semantic of it
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*/
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#define MTP_TST_MSG_GRP 0x01
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#define MTP_PROHIBIT_MSG_GRP 0x04
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#define MTP_TRF_RESTR_MSG_GRP 0x07
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/* h1 values for different groups */
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#define MTP_TST_MSG_SLTM 0x01
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#define MTP_TST_MSG_SLTA 0x02
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#define MTP_RESTR_MSG_ALLWED 0x01
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#define MTP_PROHIBIT_MSG_SIG 0x01
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#define SCCP_SST 0x03
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#define SCCP_SSP 0x02
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#define SCCP_SSA 0x01
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#define MTP_LINK_MASK 0x0F
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#define MTP_ADDR_MASK 0x0FFF
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#define MTP_APOC_MASK 0x3f
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define MTP_LINK_SLS(addr) ((addr >>28) & MTP_LINK_MASK)
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#define MTP_ADDR(link, dpc, opc) \
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(((dpc) & MTP_ADDR_MASK) << 0 | \
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((opc) & MTP_ADDR_MASK) << 14| \
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((link) & MTP_LINK_MASK) << 28)
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#define MTP_MAKE_APOC(apoc) \
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(apoc & 0x3fff)
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#elif __BYTE_ORDER == __BIG_ENDIAN
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static inline uint32_t c_swap_32(uint32_t in)
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{
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return (((in & 0x000000ff) << 24) |
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((in & 0x0000ff00) << 8) |
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((in & 0x00ff0000) >> 8) |
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((in & 0xff000000) >> 24));
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}
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static inline uint16_t c_swap_16(uint16_t in)
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{
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return (((in & 0x00ff) << 8) |
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(in & 0xff00) >> 8);
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}
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#define MTP_LINK_SLS(addr) ((c_swap_32(addr)>>28) & MTP_LINK_MASK)
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#define MTP_ADDR(link, dpc, opc) \
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c_swap_32(((dpc) & MTP_ADDR_MASK) << 0 | \
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((opc) & MTP_ADDR_MASK) << 14| \
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((link) & MTP_LINK_MASK) << 28)
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#define MTP_MAKE_APOC(apoc) \
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c_swap_16((apoc & 0x3fff))
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#endif
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/*
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* not the on wire address...
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*/
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struct mtp_addr {
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uint16_t dpc;
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uint16_t opc;
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uint8_t link;
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} __attribute__((packed));
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/*
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* the struct is defined in Q.704 and can be seen in the
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* wireshark dissectors too
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*/
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struct mtp_level_3_hdr {
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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uint8_t ser_ind : 4,
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spare : 2,
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ni : 2;
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#elif __BYTE_ORDER == __BIG_ENDIAN
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uint8_t ni : 2,
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spare : 2,
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ser_ind : 4;
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#endif
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uint32_t addr;
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uint8_t data[0];
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} __attribute__((packed));
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struct mtp_level_3_cmn {
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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uint8_t h0 : 4,
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h1 : 4;
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#elif __BYTE_ORDER == __BIG_ENDIAN
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uint8_t h1 : 4,
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h0 : 4;
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#endif
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} __attribute__((packed));
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struct mtp_level_3_mng {
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struct mtp_level_3_cmn cmn;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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uint8_t spare : 4,
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length : 4;
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#elif __BYTE_ORDER == __BIG_ENDIAN
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uint8_t length : 4,
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spare : 4;
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#endif
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uint8_t data[0];
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} __attribute__((packed));
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struct mtp_level_3_prohib {
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struct mtp_level_3_cmn cmn;
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uint16_t apoc;
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} __attribute__((packed));
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struct sccp_con_ctrl_prt_mgt {
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uint8_t sst;
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uint8_t assn; /* affected sub system number */
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uint16_t apoc;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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uint8_t mul_ind : 2,
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spare : 6;
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#elif __BYTE_ORDER == __BIG_ENDIAN
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uint8_t spare : 6,
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mul_ind : 2;
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#endif
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} __attribute__((packed));
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#endif
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