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/* GPRS-NS type definitions in TTCN-3
* (C) 2017 Harald Welte <laforge@gnumonks.org>
* All rights reserved.
*
* Released under the terms of GNU General Public License, Version 2 or
* (at your option) any later version.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
module NS_Types {
import from General_Types all;
import from Osmocom_Types all;
import from GSM_Types all;
import from BSSGP_Types all;
import from BSSGP_Helper_Functions all;
/* TS 48.016 10.3.7 */
type enumerated NsPduType {
NS_PDUT_NS_UNITDATA ('00000000'B),
NS_PDUT_NS_RESET ('00000010'B),
NS_PDUT_NS_RESET_ACK ('00000011'B),
NS_PDUT_NS_BLOCK ('00000100'B),
NS_PDUT_NS_BLOCK_ACK ('00000101'B),
NS_PDUT_NS_UNBLOCK ('00000110'B),
NS_PDUT_NS_UNBLOCK_ACK ('00000111'B),
NS_PDUT_NS_STATUS ('00001000'B),
NS_PDUT_NS_ALIVE ('00001010'B),
NS_PDUT_NS_ALIVE_ACK ('00001011'B)
/* FIXME: SNS */
} with { variant "FIELDLENGTH(8)" };
/* TS 48.016 10.3 */
type enumerated NsIEI {
NS_IEI_CAUSE ('00000000'B),
NS_IEI_NSVCI ('00000001'B),
NS_IEI_NS_PDU ('00000010'B),
NS_IEI_BVCI ('00000011'B),
NS_IEI_NSEI ('00000100'B),
NS_IEI_LIST_IPv4 ('00000101'B),
NS_IEI_LIST_IPv6 ('00000110'B),
NS_IEI_MAX_NUM_NSVC ('00000111'B),
NS_IEI_NUM_IPv4_EP ('00001000'B),
NS_IEI_NUM_IPv6_EP ('00001001'B),
NS_IEI_RESET_FLAG ('00001010'B),
NS_IEI_IP_ADDRESS ('00001011'B)
} with { variant "FIELDLENGTH(8)" };
/* TS 48.016 10.3.2 */
type enumerated NsCause {
NS_CAUSE_TRANSIT_NETWORK_FAILURE ('00000000'B),
NS_CAUSE_OM_INTERVENTION ('00000001'B),
NS_CAUSE_EQUIPMENT_FAILURE ('00000010'B),
NS_CAUSE_NSVC_BLOCKED ('00000011'B),
NS_CAUSE_NSVC_UNKNOWN ('00000100'B),
NS_CAUSE_BVCI_UNKNOWN_AT_NSE ('00000101'B),
NS_CAUSE_SEMANTICALLY_INCORRECT_PDU ('00001000'B),
NS_CAUSE_PDU_NOT_COMPATIBLE_WITH_PROTOCOL_STATE ('00001010'B),
NS_CAUSE_PROTOCOL_ERROR_UNSPEIFIED ('00001011'B),
NS_CAUSE_INVALID_ESSENTIAL_IE ('00001100'B),
NS_CAUSE_MISSING_ESSENTIAL_IE ('00001101'B),
NS_CAUSE_INVALID_NR_OF_IPv4_ENDPOINTS ('00001110'B),
NS_CAUSE_INVALID_NR_OF_IPv6_ENDPOINTS ('00001111'B),
NS_CAUSE_INVALID_NR_OF_NSVCS ('00010000'B),
NS_CAUSE_INVALID_WEIGHTS ('00010001'B),
NS_CAUSE_UNKNOWN_IP_ENDPOINT ('00010010'B),
NS_CAUSE_UNKNOWN_IP_ADDRESS ('00010011'B),
NS_CAUSE_IP_TEST_FAILEDA ('00010100'B)
} with { variant "FIELDLENGTH(8)" };
/* TS 48.016 10.3.9 */
type record NsSduControlBits {
BIT6 spare,
boolean c,
boolean r
} with { variant (c) "FIELDLENGTH(1)"
variant (r) "FIELDLENGTH(1)"
};
template NsSduControlBits t_SduCtrlB := {
spare := '000000'B,
c := false,
r := false
}
type uint16_t Nsvci;
type uint16_t Nsei;
type union NsIeUnion {
BssgpBvci bvci, /* 10.3.1 */
NsCause cause, /* 10.3.2 */
uint16_t max_num_nsvc, /* 10.3.2e */
uint16_t num_ipv4_ep, /* 10.3.2f */
uint16_t num_ipv6_ep, /* 10.3.2g */
Nsvci nsvci, /* 10.3.5 */
Nsei nsei, /* 10.3.6 */
octetstring other
};
type record NsTLV {
NsIEI iei,
uint16_t len,
NsIeUnion u
} with {
variant (u) "CROSSTAG(
bvci, iei = NS_IEI_BVCI;
cause, iei = NS_IEI_CAUSE;
max_num_nsvc, iei = NS_IEI_MAX_NUM_NSVC;
num_ipv4_ep, iei = NS_IEI_NUM_IPv4_EP;
num_ipv6_ep, iei = NS_IEI_NUM_IPv6_EP;
nsvci, iei = NS_IEI_NSVCI;
nsei, iei = NS_IEI_NSEI;
other, OTHERWISE)"
variant (len) "LENGTHTO(u)"
};
type record of NsTLV NsTLVs;
type record NsPduUnitdata {
NsSduControlBits control_bits,
BssgpBvci bvci,
octetstring sdu
} with { variant "" };
type record NsPduOther {
NsTLVs tlvs optional
} with { variant "" };
type union NsPduUnion {
NsPduUnitdata unitdata,
NsPduOther other
} with { variant "" };
type record NsPdu {
NsPduType pdu_type,
NsPduUnion u
} with { variant (u) "CROSSTAG(
unitdata, pdu_type = NS_PDUT_NS_UNITDATA;
other, OTHERWISE)"
};
external function enc_NsPdu(in NsPdu pdu) return octetstring
with { extension "prototype(convert) encode(RAW)" };
external function dec_NsPdu(in octetstring stream) return NsPdu
with { extension "prototype(convert) decode(RAW)" };
template NsTLV t_NS_IE_CAUSE(template NsCause cause) := {
iei := NS_IEI_CAUSE,
len := 1,
u := { cause := cause }
};
template NsTLV t_NS_IE_NSVCI(template Nsvci nsvci) := {
iei := NS_IEI_NSVCI,
len := 2,
u := { nsvci := nsvci }
}
template NsTLV t_NS_IE_NSEI(template Nsvci nsei) := {
iei := NS_IEI_NSEI,
len := 2,
u := { nsei := nsei }
}
template NsTLV t_NsIE(NsIEI iei, NsIeUnion u) := {
iei := iei,
u := u
}
template NsTLV t_NsIE_other(NsIEI iei, octetstring val) := {
iei := iei,
len := lengthof(val),
u := { other := val }
}
template NsPdu t_NS_RESET(template NsCause cause, template Nsvci nsvci, template Nsei nsei) := {
pdu_type := NS_PDUT_NS_RESET,
u := {
other := {
tlvs := { t_NS_IE_CAUSE(cause), t_NS_IE_NSVCI(nsvci), t_NS_IE_NSEI(nsei) }
}
}
};
template NsPdu t_NS_RESET_ACK(template Nsvci nsvci, template Nsei nsei) := {
pdu_type := NS_PDUT_NS_RESET_ACK,
u := {
other := {
tlvs := { t_NS_IE_NSVCI(nsvci), t_NS_IE_NSEI(nsei) }
}
}
};
template NsPdu t_NS_BLOCK(template NsCause cause, template Nsvci nsvci) := {
pdu_type := NS_PDUT_NS_BLOCK,
u := {
other := {
tlvs := { t_NS_IE_CAUSE(cause), t_NS_IE_NSVCI(nsvci) }
}
}
}
template NsPdu t_NS_BLOCK_ACK(template Nsvci nsvci) := {
pdu_type := NS_PDUT_NS_BLOCK_ACK,
u := {
other := {
tlvs := { t_NS_IE_NSVCI(nsvci) }
}
}
}
template NsPdu t_NsPduSimple(template NsPduType pdut) := { pdu_type := pdut, u := { other := { tlvs := omit } } };
template NsPdu t_NS_ALIVE := t_NsPduSimple(NS_PDUT_NS_ALIVE);
template NsPdu t_NS_ALIVE_ACK := t_NsPduSimple(NS_PDUT_NS_ALIVE_ACK);
template NsPdu t_NS_UNBLOCK := t_NsPduSimple(NS_PDUT_NS_UNBLOCK);
template NsPdu t_NS_UNBLOCK_ACK := t_NsPduSimple(NS_PDUT_NS_UNBLOCK_ACK);
template NsPdu t_NS_STATUS(NsCause cause, NsPdu pdu) := {
pdu_type := NS_PDUT_NS_STATUS,
u := {
other := {
tlvs := { t_NS_IE_CAUSE(cause), t_NsIE_other(NS_IEI_NS_PDU, f_NS_compact_len(enc_NsPdu(pdu))) }
}
}
}
template NsPdu t_NS_UNITDATA(template NsSduControlBits bits, template BssgpBvci bvci, template octetstring sdu) := {
pdu_type := NS_PDUT_NS_UNITDATA,
u := {
unitdata := {
control_bits := bits,
bvci := bvci,
sdu := sdu
}
}
}
} with { encode "RAW" };
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