Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 1 | module GPRS_Components { |
| 2 | /* |
| 3 | * Osmocom PCU test suite in TTCN-3, components for GPRS handlng |
| 4 | * (C) 2018-2019 Harald Welte <laforge@gnumonks.org> |
| 5 | * (C) 2019 Vadim Yanitskiy <axilirator@gmail.com> |
| 6 | * (C) 2020 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * Released under the terms of GNU General Public License, Version 2 or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 13 | */ |
| 14 | |
| 15 | import from General_Types all; |
| 16 | import from Osmocom_Types all; |
| 17 | import from GSM_Types all; |
| 18 | import from GSM_RR_Types all; |
| 19 | |
| 20 | import from Osmocom_VTY_Functions all; |
| 21 | import from TELNETasp_PortType all; |
| 22 | |
| 23 | import from MobileL3_GMM_SM_Types all; |
| 24 | import from RLCMAC_CSN1_Types all; |
| 25 | import from RLCMAC_CSN1_Templates all; |
| 26 | import from RLCMAC_Types all; |
| 27 | import from RLCMAC_Templates all; |
| 28 | |
| 29 | import from MobileL3_CommonIE_Types all; |
| 30 | import from L3_Templates all; |
| 31 | |
| 32 | import from NS_Types all; |
| 33 | import from BSSGP_Types all; |
| 34 | import from Osmocom_Gb_Types all; |
| 35 | |
| 36 | import from BSSGP_Emulation all; /* BssgpConfig */ |
| 37 | import from NS_Emulation all; /* NSConfiguration */ |
| 38 | |
| 39 | import from UD_Types all; |
| 40 | import from PCUIF_Types all; |
| 41 | import from PCUIF_CodecPort all; |
| 42 | import from PCUIF_Components all; |
| 43 | import from IPL4asp_Types all; |
| 44 | import from Native_Functions all; |
| 45 | import from SGSN_Components all; |
| 46 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 47 | type record TsTrxBtsNum { |
| 48 | uint3_t ts_nr, |
| 49 | uint3_t trx_nr, |
| 50 | uint8_t bts_nr, |
| 51 | uint8_t blk_nr |
| 52 | }; |
| 53 | |
| 54 | template (value) TsTrxBtsNum ts_TsTrxBtsNum(uint3_t ts_nr := 7, |
| 55 | uint3_t trx_nr := 0, |
| 56 | uint8_t bts_nr := 0, |
| 57 | uint8_t blk_nr := 0) := { |
| 58 | ts_nr := ts_nr, |
| 59 | trx_nr := trx_nr, |
| 60 | bts_nr := bts_nr, |
| 61 | blk_nr := blk_nr |
| 62 | }; |
| 63 | template TsTrxBtsNum tr_TsTrxBtsNum(template uint3_t ts_nr := ?, |
| 64 | template uint3_t trx_nr := ?, |
| 65 | template uint8_t bts_nr := ?, |
| 66 | template uint8_t blk_nr := ?) := { |
| 67 | ts_nr := ts_nr, |
| 68 | trx_nr := trx_nr, |
| 69 | bts_nr := bts_nr, |
| 70 | blk_nr := blk_nr |
| 71 | }; |
| 72 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 73 | type union PacketDlAssignChan { |
| 74 | PacketDlAssign ccch, |
| 75 | PacketDlAssignment pacch |
| 76 | }; |
| 77 | |
| 78 | type record DlTbf { |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 79 | GsmRrMessage rr_imm_ass optional, |
| 80 | PacketDlAssignChan ass optional, |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 81 | uint5_t tfi, |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 82 | GsmArfcn arfcn, |
| 83 | BIT8 ts_mask, |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 84 | AckNackDescription acknack_desc |
| 85 | }; |
| 86 | |
| 87 | type union PacketUlAssignChan { |
| 88 | PacketUlAssign ccch, |
| 89 | EgprsUlAss ccch_egprs, |
| 90 | PacketUlAssignment pacch |
| 91 | }; |
| 92 | |
| 93 | type record UlTbf { |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 94 | GsmRrMessage rr_imm_ass optional, |
| 95 | PacketUlAssignChan ass optional, |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 96 | uint5_t tfi, |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 97 | GsmArfcn arfcn, |
| 98 | BIT8 ts_mask, |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 99 | uint3_t usf[8], |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 100 | boolean is_egprs, |
| 101 | uint14_t bsn, |
| 102 | CodingScheme tx_cs_mcs |
| 103 | }; |
| 104 | |
| 105 | type record GprsMS { |
| 106 | hexstring imsi, |
| 107 | GprsTlli tlli, |
| 108 | uint16_t ra, |
| 109 | uint8_t ra_is_11bit, |
| 110 | PCUIF_BurstType burst_type, |
| 111 | TimingAdvance ta, |
| 112 | int16_t lqual_cb, |
| 113 | UlTbf ul_tbf optional, /* TODO: Only 1 UL tbf supported for now */ |
| 114 | DlTbf dl_tbf optional /* TODO: Only 1 DL tbf supported for now */ |
| 115 | }; |
| 116 | type record of GprsMS GprsMSArray; |
| 117 | |
| 118 | template AckNackDescription t_AckNackDescription_init := { |
| 119 | final_ack := '0'B, |
| 120 | starting_seq_nr := 0, |
| 121 | receive_block_bitmap := '0000000000000000000000000000000000000000000000000000000000000000'B |
| 122 | } |
| 123 | |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 124 | const uint3_t USF_UNUSED := 7; /* used to indicate PRACH */ |
| 125 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 126 | template (value) GprsMS t_GprsMS_def := { |
| 127 | imsi := f_gen_imsi(42), |
Pau Espin Pedrol | bfd69f6 | 2020-10-22 18:06:07 +0200 | [diff] [blame] | 128 | tlli := f_gen_tlli(), |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 129 | ra := bit2int(chan_req_def), |
| 130 | ra_is_11bit := 0, |
| 131 | burst_type := BURST_TYPE_0, |
| 132 | ta := 0, |
| 133 | lqual_cb := 0, |
| 134 | ul_tbf := omit, |
| 135 | dl_tbf := omit |
| 136 | }; |
| 137 | |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 138 | template (value) DlTbf t_DlTbf_def := { |
| 139 | rr_imm_ass := omit, |
| 140 | ass := omit, |
| 141 | tfi := 0, |
| 142 | arfcn := 0, |
| 143 | ts_mask := '00000000'B, |
| 144 | acknack_desc := t_AckNackDescription_init |
| 145 | }; |
| 146 | |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 147 | template (value) UlTbf t_UlTbf_def := { |
| 148 | rr_imm_ass := omit, |
| 149 | ass := omit, |
| 150 | tfi := 0, |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 151 | arfcn := 0, |
| 152 | ts_mask := '00000000'B, |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 153 | usf := { USF_UNUSED, USF_UNUSED, USF_UNUSED, USF_UNUSED, USF_UNUSED, USF_UNUSED, USF_UNUSED, USF_UNUSED }, |
| 154 | is_egprs := false, |
| 155 | bsn := 0, |
| 156 | tx_cs_mcs := CS_1 |
| 157 | }; |
| 158 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 159 | type component MS_BTS_IFACE_CT { |
| 160 | /* Virtual BTS component */ |
| 161 | var RAW_PCU_BTS_CT vc_BTS; |
| 162 | /* Connection to the BTS component (one for now) */ |
| 163 | port RAW_PCU_MSG_PT BTS; |
| 164 | |
Pau Espin Pedrol | bfd69f6 | 2020-10-22 18:06:07 +0200 | [diff] [blame] | 165 | /* Support only 8 ms for now */ |
| 166 | var GprsMS g_ms[8]; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 167 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 168 | /* Value at which Countdown Procedure starts. Announced by network (GPRS Cell Options as per TS 04.60 Chapter 12.24) */ |
| 169 | var uint4_t g_bs_cv_max := 4; |
| 170 | } |
| 171 | |
Pau Espin Pedrol | bfd69f6 | 2020-10-22 18:06:07 +0200 | [diff] [blame] | 172 | function f_init_gprs_ms(integer num_ms := 1, template (value) GprsMS ms_params := t_GprsMS_def) runs on MS_BTS_IFACE_CT |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 173 | { |
Pau Espin Pedrol | bfd69f6 | 2020-10-22 18:06:07 +0200 | [diff] [blame] | 174 | for (var integer i := 0; i < num_ms; i := i + 1 ) { |
| 175 | g_ms[i] := valueof(ms_params); |
| 176 | } |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 180 | function f_shutdown(charstring file, integer line, |
| 181 | boolean final := false) |
| 182 | runs on MS_BTS_IFACE_CT { |
| 183 | /* Determine if the test case was aborted in the middle */ |
| 184 | if (not final) { |
| 185 | log("Test case ", testcasename(), " aborted at ", file, ":", line); |
| 186 | } else { |
| 187 | /* Guard verdict to avoid 'none' */ |
| 188 | setverdict(pass); |
| 189 | } |
| 190 | |
| 191 | /* Properly shutdown virtual BTS and its clock generator */ |
| 192 | BTS.send(ts_RAW_PCU_CMD(GENERAL_CMD_SHUTDOWN)); |
| 193 | vc_BTS.done; /* wait untill it's done */ |
| 194 | |
| 195 | /* Shutdown the others and MTC */ |
| 196 | all component.stop; |
| 197 | mtc.stop; |
| 198 | } |
| 199 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 200 | function f_ultbf_new_from_rr_imm_ass(in GsmRrMessage rr_imm_ass) |
| 201 | runs on MS_BTS_IFACE_CT return UlTbf { |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 202 | var UlTbf ul_tbf := valueof(t_UlTbf_def); |
| 203 | var uint3_t tn_allocated := rr_imm_ass.payload.imm_ass.pkt_chan_desc.tn; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 204 | |
| 205 | ul_tbf.rr_imm_ass := rr_imm_ass; |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 206 | if (rr_imm_ass.payload.imm_ass.pkt_chan_desc.presence == '0'B and |
| 207 | rr_imm_ass.payload.imm_ass.pkt_chan_desc.zero.hopping == '0'B) { |
| 208 | ul_tbf.arfcn := rr_imm_ass.payload.imm_ass.pkt_chan_desc.zero.arfcn; |
| 209 | } |
| 210 | ul_tbf.ts_mask[tn_allocated] := '1'B; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 211 | |
| 212 | /* Make sure we received an UL TBF Assignment */ |
| 213 | if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := false, rest := tr_IaRestOctets_ULAss(?)))) { |
| 214 | ul_tbf.ass.ccch := rr_imm_ass.payload.imm_ass.rest_octets.hh.pa.uldl.ass.ul; |
| 215 | log("Rx Uplink TBF GPRS assignment: ", ul_tbf.ass.ccch); |
| 216 | ul_tbf.is_egprs := false; |
| 217 | if (match(ul_tbf.ass.ccch, tr_PacketUlDynAssign)) { |
| 218 | ul_tbf.tfi := ul_tbf.ass.ccch.dynamic.tfi_assignment; |
Pau Espin Pedrol | 9040111 | 2020-05-20 17:36:27 +0200 | [diff] [blame] | 219 | ul_tbf.tx_cs_mcs := f_rlcmac_block_ChCodingCommand2cs_mcs(ul_tbf.ass.ccch.dynamic.ch_coding_cmd); |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 220 | ul_tbf.usf[tn_allocated] := ul_tbf.ass.ccch.dynamic.usf; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 221 | } else if (match(ul_tbf.ass.ccch, tr_PacketUlSglAssign)) { |
| 222 | /* Nothing to do here yet */ |
| 223 | } |
| 224 | } else if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := false, rest := tr_IaRestOctets_EGPRSULAss(?)))) { |
| 225 | ul_tbf.ass.ccch_egprs := rr_imm_ass.payload.imm_ass.rest_octets.lh.egprs_ul; |
| 226 | log("Rx Uplink TBF EGPRS assignment: ", ul_tbf.ass.ccch_egprs); |
| 227 | ul_tbf.is_egprs := true; |
| 228 | if (match(ul_tbf.ass.ccch_egprs, tr_EgprsUlAssDynamic)) { |
| 229 | ul_tbf.tfi := ul_tbf.ass.ccch_egprs.dynamic.tfi_assignment; |
Pau Espin Pedrol | 9040111 | 2020-05-20 17:36:27 +0200 | [diff] [blame] | 230 | ul_tbf.tx_cs_mcs := f_rlcmac_block_EgprsChCodingCommand2cs_mcs(ul_tbf.ass.ccch_egprs.dynamic.egprs_ch_coding_cmd); |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 231 | ul_tbf.usf[tn_allocated] := ul_tbf.ass.ccch_egprs.dynamic.usf; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 232 | } else if (match(ul_tbf.ass.ccch_egprs, tr_EgprsUlAssMultiblock)) { |
| 233 | /* Nothing to do here yet */ |
| 234 | } |
| 235 | } else { |
| 236 | setverdict(fail, "Failed to match UL TBF Assignment: ", rr_imm_ass); |
| 237 | f_shutdown(__BFILE__, __LINE__); |
| 238 | } |
| 239 | |
| 240 | setverdict(pass); |
| 241 | return ul_tbf; |
| 242 | } |
| 243 | |
| 244 | function f_ultbf_new_from_ass_pacch(RlcmacDlBlock dl_block) |
| 245 | runs on MS_BTS_IFACE_CT return UlTbf { |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 246 | var UlTbf ul_tbf := valueof(t_UlTbf_def); |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 247 | var boolean freq_par_present := false; |
| 248 | var FrequencyParameters freq_par; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 249 | |
| 250 | ul_tbf.ass.pacch := dl_block.ctrl.payload.u.ul_assignment; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 251 | ul_tbf.tx_cs_mcs := f_rlcmac_dl_block_get_assigned_ul_cs_mcs(dl_block); |
| 252 | ul_tbf.tfi := f_rlcmac_dl_block_get_tfi(dl_block); |
| 253 | /* TODO: handle GlobalTfiOrTlli tfi_or_tlli from pkt_ul_ass */ |
| 254 | |
| 255 | /* TODO: support single block allocation */ |
| 256 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS_GPRS(?, tr_PktUlAssGprsDynamic(tr_DynamicAllocation(?))))) { |
| 257 | ul_tbf.tfi := dl_block.ctrl.payload.u.ul_assignment.gprs.dyn_block_alloc.ul_tfi_assignment; |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 258 | freq_par_present := dl_block.ctrl.payload.u.ul_assignment.gprs.freq_par_present == '1'B; |
| 259 | if (freq_par_present) { |
| 260 | freq_par := dl_block.ctrl.payload.u.ul_assignment.gprs.freq_par; |
| 261 | } |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 262 | ul_tbf.is_egprs := false; |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 263 | for (var integer i := 0; i < 8; i := i + 1) { |
| 264 | if (dl_block.ctrl.payload.u.ul_assignment.gprs.dyn_block_alloc.ts_allocation.ts[i].presence == '1'B) { |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 265 | ul_tbf.ts_mask[i] := '1'B; |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 266 | ul_tbf.usf[i] := dl_block.ctrl.payload.u.ul_assignment.gprs.dyn_block_alloc.ts_allocation.ts[i].usf_tn; |
| 267 | } |
| 268 | } |
| 269 | } else if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS_EGPRS(?, tr_PktUlAssEgprsDynamic(tr_DynamicAllocation(?))))) { |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 270 | ul_tbf.tfi := dl_block.ctrl.payload.u.ul_assignment.egprs.dyn_block_alloc.ul_tfi_assignment; |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 271 | freq_par_present := dl_block.ctrl.payload.u.ul_assignment.egprs.freq_par_present == '1'B; |
| 272 | if (freq_par_present) { |
| 273 | freq_par := dl_block.ctrl.payload.u.ul_assignment.egprs.freq_par; |
| 274 | } |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 275 | ul_tbf.is_egprs := true; |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 276 | for (var integer i := 0; i < 8; i := i + 1) { |
| 277 | if (dl_block.ctrl.payload.u.ul_assignment.egprs.dyn_block_alloc.ts_allocation.ts[i].presence == '1'B) { |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 278 | ul_tbf.ts_mask[i] := '1'B; |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 279 | ul_tbf.usf[i] := dl_block.ctrl.payload.u.ul_assignment.egprs.dyn_block_alloc.ts_allocation.ts[i].usf_tn; |
| 280 | } |
| 281 | } |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 282 | } |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 283 | |
| 284 | /* FIXME: freq_par and arfcn are optional. in that case we need to |
| 285 | * infer/reuse from current dl_tbf or ul_tbf */ |
| 286 | if (freq_par_present and freq_par.presence == '00'B) { |
| 287 | ul_tbf.arfcn := freq_par.arfcn; |
| 288 | } |
| 289 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 290 | return ul_tbf; |
| 291 | } |
| 292 | |
| 293 | function f_dltbf_new_from_rr_imm_ass(in GsmRrMessage rr_imm_ass, template PacketDlAssign dl_ass := tr_PacketDlAssign(?)) |
| 294 | runs on MS_BTS_IFACE_CT return DlTbf { |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 295 | var DlTbf dl_tbf := valueof(t_DlTbf_def); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 296 | |
| 297 | dl_tbf.rr_imm_ass := rr_imm_ass; |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 298 | if (rr_imm_ass.payload.imm_ass.pkt_chan_desc.presence == '0'B and |
| 299 | rr_imm_ass.payload.imm_ass.pkt_chan_desc.zero.hopping == '0'B) { |
| 300 | dl_tbf.arfcn := rr_imm_ass.payload.imm_ass.pkt_chan_desc.zero.arfcn; |
| 301 | } |
| 302 | dl_tbf.ts_mask[rr_imm_ass.payload.imm_ass.pkt_chan_desc.tn] := '1'B; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 303 | |
| 304 | /* Make sure we received a DL TBF Assignment */ |
| 305 | if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := true, rest := tr_IaRestOctets_DLAss(dl_ass)))) { |
| 306 | dl_tbf.ass.ccch := rr_imm_ass.payload.imm_ass.rest_octets.hh.pa.uldl.ass.dl; |
| 307 | log("Rx Downlink TBF assignment: ", dl_tbf.ass); |
| 308 | } else { |
| 309 | setverdict(fail, "Failed to match DL TBF Assignment: ", rr_imm_ass); |
| 310 | f_shutdown(__BFILE__, __LINE__); |
| 311 | } |
| 312 | |
| 313 | /* TODO: match TLLI */ |
| 314 | if (dl_tbf.ass.ccch.group1_present == '1'B) { |
| 315 | dl_tbf.tfi := dl_tbf.ass.ccch.group1.tfi_assignment; |
| 316 | } else { |
| 317 | setverdict(fail, "Immediate Assignment contains no DL TFI"); |
| 318 | f_shutdown(__BFILE__, __LINE__); |
| 319 | } |
| 320 | |
| 321 | setverdict(pass); |
| 322 | return dl_tbf; |
| 323 | } |
| 324 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 325 | function f_dltbf_new_from_ass_pacch(RlcmacDlBlock dl_block) |
| 326 | runs on MS_BTS_IFACE_CT return DlTbf { |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 327 | var DlTbf dl_tbf := valueof(t_DlTbf_def); |
| 328 | var boolean freq_par_present := false; |
| 329 | var FrequencyParameters freq_par; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 330 | |
| 331 | dl_tbf.ass.pacch := dl_block.ctrl.payload.u.dl_assignment; |
| 332 | dl_tbf.tfi := f_rlcmac_dl_block_get_tfi(dl_block); |
| 333 | /* TODO: handle GlobalTfiOrTlli tfi_or_tlli from pkt_dl_ass */ |
Pau Espin Pedrol | b20b7e5 | 2020-10-28 21:28:45 +0100 | [diff] [blame^] | 334 | |
| 335 | if (match(dl_block, tr_RLCMAC_DL_PACKET_ASS(?))) { |
| 336 | dl_tbf.tfi := dl_block.ctrl.payload.u.dl_assignment.dl_tfi_assignment; |
| 337 | freq_par_present := dl_block.ctrl.payload.u.dl_assignment.freq_par_present == '1'B; |
| 338 | if (freq_par_present) { |
| 339 | freq_par := dl_block.ctrl.payload.u.dl_assignment.freq_par; |
| 340 | } |
| 341 | dl_tbf.ts_mask := dl_block.ctrl.payload.u.dl_assignment.timeslot_alloc; /* TODO: is this the correct order ? */ |
| 342 | /* TODO: check egprs in dl_assignment.rel_additions (PktDlAssR99Additions) */ |
| 343 | } |
| 344 | |
| 345 | /* FIXME: freq_par and arfcn are optional. in that case we need to |
| 346 | * infer/reuse from current dl_tbf or ul_tbf */ |
| 347 | if (freq_par_present and freq_par.presence == '00'B) { |
| 348 | dl_tbf.arfcn := freq_par.arfcn; |
| 349 | } |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 350 | return dl_tbf; |
| 351 | } |
| 352 | |
Pau Espin Pedrol | 05b6c17 | 2020-06-26 17:28:23 +0200 | [diff] [blame] | 353 | function f_ultbf_inc_bsn(inout UlTbf ul_tbf) |
| 354 | runs on MS_BTS_IFACE_CT { |
| 355 | ul_tbf.bsn := ul_tbf.bsn + 1; |
| 356 | ul_tbf.bsn := ul_tbf.bsn mod 128; /* FIXME: EGPRS SNS: 2048 */ |
| 357 | } |
| 358 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 359 | function f_ms_use_ra(inout GprsMS ms, uint16_t ra, uint8_t ra_is_11bit := 0) |
| 360 | runs on MS_BTS_IFACE_CT { |
| 361 | ms.ra_is_11bit := ra_is_11bit; |
| 362 | ms.ra := ra; |
| 363 | if (ra_is_11bit == 0) { |
| 364 | ms.burst_type := BURST_TYPE_0; |
| 365 | } else { |
| 366 | ms.burst_type := BURST_TYPE_1; |
| 367 | } |
| 368 | } |
| 369 | |
Vadim Yanitskiy | 7431e9e | 2020-07-21 01:59:17 +0700 | [diff] [blame] | 370 | function f_ms_rx_pkt_ass_pacch(inout GprsMS ms, out uint32_t poll_fn, |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 371 | template RlcmacDlBlock t_pkt_ass := ?, |
| 372 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 373 | runs on MS_BTS_IFACE_CT return RlcmacDlBlock { |
| 374 | var RlcmacDlBlock dl_block; |
| 375 | var uint32_t dl_fn; |
| 376 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 377 | f_rx_rlcmac_dl_block(dl_block, dl_fn, nr := nr); |
Vadim Yanitskiy | 7431e9e | 2020-07-21 01:59:17 +0700 | [diff] [blame] | 378 | if (not match(dl_block, t_pkt_ass)) { |
| 379 | setverdict(fail, "Failed to match Packet Assignment:", t_pkt_ass); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 380 | f_shutdown(__BFILE__, __LINE__); |
| 381 | } |
| 382 | |
| 383 | poll_fn := f_rrbp_ack_fn(dl_fn, dl_block.ctrl.mac_hdr.rrbp); |
| 384 | |
| 385 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS)) { |
| 386 | ms.ul_tbf := f_ultbf_new_from_ass_pacch(dl_block); |
| 387 | if (ms.ul_tbf.ass.pacch.identity.tlli.tlli != ms.tlli) { |
| 388 | setverdict(fail, "Wrong TLLI ", ms.ul_tbf.ass.pacch.identity.tlli, " received vs exp ", ms.tlli); |
| 389 | f_shutdown(__BFILE__, __LINE__); |
| 390 | } |
| 391 | } else if (match(dl_block, tr_RLCMAC_DL_PACKET_ASS)) { |
| 392 | ms.dl_tbf := f_dltbf_new_from_ass_pacch(dl_block); |
Pau Espin Pedrol | 25e0f29 | 2020-10-29 12:36:40 +0100 | [diff] [blame] | 393 | if (ischosen(ms.dl_tbf.ass.pacch.tfi_or_tlli.tlli) and |
| 394 | ms.dl_tbf.ass.pacch.tfi_or_tlli.tlli.tlli != ms.tlli) { |
| 395 | setverdict(fail, "Wrong TLLI ", ms.dl_tbf.ass.pacch.tfi_or_tlli.tlli.tlli, " received vs exp ", ms.tlli); |
| 396 | f_shutdown(__BFILE__, __LINE__); |
| 397 | } |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 398 | } else { |
| 399 | setverdict(fail, "Should not happen:", dl_block); |
| 400 | f_shutdown(__BFILE__, __LINE__); |
| 401 | } |
| 402 | |
| 403 | return dl_block; |
| 404 | } |
| 405 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 406 | function f_ms_establish_ul_tbf(inout GprsMS ms, template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 407 | runs on MS_BTS_IFACE_CT { |
| 408 | var GsmRrMessage rr_imm_ass; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 409 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 410 | rr_imm_ass := f_pcuif_tx_rach_rx_imm_ass(ms.ra, ms.ra_is_11bit, ms.burst_type, ms.ta, nr := nr); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 411 | ms.ul_tbf := f_ultbf_new_from_rr_imm_ass(rr_imm_ass); |
| 412 | } |
| 413 | |
Vadim Yanitskiy | 84d1dd5 | 2020-05-28 21:09:22 +0700 | [diff] [blame] | 414 | function f_ms_exp_dl_tbf_ass_ccch(inout GprsMS ms, template PCUIF_Sapi sapi := PCU_IF_SAPI_AGCH, |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 415 | template GsmRrMessage t_imm_ass := tr_IMM_TBF_ASS(true, ?, ?), |
| 416 | template (present) TsTrxBtsNum nr := tr_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 417 | runs on MS_BTS_IFACE_CT { |
| 418 | var GsmRrMessage rr_imm_ass; |
| 419 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 420 | rr_imm_ass := f_pcuif_rx_imm_ass(sapi, t_imm_ass, nr := nr); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 421 | ms.dl_tbf := f_dltbf_new_from_rr_imm_ass(rr_imm_ass, tr_PacketDlAssign(ms.tlli)); |
| 422 | } |
| 423 | |
| 424 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 425 | function f_ms_tx_data_ind(inout GprsMS ms, octetstring data, uint32_t fn := 0, |
| 426 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 427 | runs on MS_BTS_IFACE_CT { |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 428 | f_pcuif_tx_data_ind(data, ms.lqual_cb, fn, nr := nr); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 429 | } |
| 430 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 431 | function f_ms_tx_ul_block(inout GprsMS ms, template (value) RlcmacUlBlock ul_data, |
| 432 | uint32_t fn := 0, template (omit) CodingScheme force_cs_mcs := omit, |
| 433 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 434 | runs on MS_BTS_IFACE_CT return integer { |
| 435 | var octetstring data; |
| 436 | var integer padding_len; |
Pau Espin Pedrol | 245bfcb | 2020-06-30 20:17:07 +0200 | [diff] [blame] | 437 | var CodingScheme cs_mcs; |
| 438 | var uint32_t cs_mcs_len; |
| 439 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 440 | /* Encode the payload of DATA.ind */ |
| 441 | data := enc_RlcmacUlBlock(valueof(ul_data)); |
Pau Espin Pedrol | 245bfcb | 2020-06-30 20:17:07 +0200 | [diff] [blame] | 442 | |
| 443 | if (ispresent(force_cs_mcs)) { |
| 444 | cs_mcs := valueof(force_cs_mcs); |
| 445 | } else if (ischosen(ul_data.ctrl)) { |
| 446 | cs_mcs := CS_1; /* CTRL is always CS1 */ |
| 447 | } else { |
| 448 | /* Add padding to encode payload to minimum required CS/MCS: */ |
| 449 | cs_mcs := f_rlcmac_block_len_required_cs_mcs(lengthof(data), ischosen(ul_data.data_egprs)); |
| 450 | } |
| 451 | |
| 452 | cs_mcs_len := f_rlcmac_cs_mcs2block_len(cs_mcs); |
| 453 | padding_len := cs_mcs_len - lengthof(data); |
| 454 | if (padding_len < 0) { |
| 455 | setverdict(fail, "Unable to encode UL block of size ", lengthof(data), " with ", cs_mcs); |
| 456 | f_shutdown(__BFILE__, __LINE__); |
| 457 | } |
| 458 | data := f_pad_oct(data, cs_mcs_len, '00'O); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 459 | |
| 460 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 461 | f_ms_tx_data_ind(ms, data, fn, nr := nr); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 462 | return padding_len; |
| 463 | } |
| 464 | |
| 465 | /* FIXME: Only supports sending CS-1 so far */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 466 | function f_ms_tx_ul_data_block(inout GprsMS ms, octetstring payload, |
| 467 | uint4_t cv := 15, boolean with_tlli := false, uint32_t fn := 0, |
| 468 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 469 | runs on MS_BTS_IFACE_CT return integer { |
| 470 | var template (value) RlcmacUlBlock ul_data; |
| 471 | ul_data := t_RLCMAC_UL_DATA(tfi := ms.ul_tbf.tfi, |
| 472 | cv := cv, |
| 473 | bsn := ms.ul_tbf.bsn, |
| 474 | blocks := {t_RLCMAC_LLCBLOCK(payload)}); |
| 475 | if (with_tlli) { |
| 476 | ul_data.data.mac_hdr.tlli_ind := true; |
| 477 | ul_data.data.tlli := ms.tlli; |
| 478 | } |
Pau Espin Pedrol | 05b6c17 | 2020-06-26 17:28:23 +0200 | [diff] [blame] | 479 | f_ultbf_inc_bsn(ms.ul_tbf); |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 480 | return f_ms_tx_ul_block(ms, ul_data, fn, nr := nr); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 481 | } |
| 482 | |
| 483 | /* Send random payload for last "num_blocks" blocks in Ul TBF (ending with CV=0). */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 484 | function f_ms_tx_ul_data_block_multi(inout GprsMS ms, integer num_blocks := 1, boolean with_tlli := false, |
| 485 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 486 | runs on MS_BTS_IFACE_CT return octetstring { |
| 487 | var octetstring total_payload := ''O; |
| 488 | |
| 489 | for (var integer i := 0; i < num_blocks; i := i + 1) { |
| 490 | var integer padding_len; |
| 491 | var octetstring payload := f_rnd_octstring(10); |
| 492 | /* Prepare a new UL block (CV, random payload) */ |
| 493 | var integer cv := num_blocks - i - 1; |
| 494 | if (cv > g_bs_cv_max) { |
| 495 | cv := 15; |
| 496 | } |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 497 | padding_len := f_ms_tx_ul_data_block(ms, payload, cv := cv, with_tlli := with_tlli, nr := nr); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 498 | total_payload := total_payload & payload & f_pad_oct(''O, padding_len, '00'O); |
| 499 | } |
| 500 | return total_payload; |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | function f_rlcmac_dl_block_get_tfi(RlcmacDlBlock dl_block) |
| 504 | runs on MS_BTS_IFACE_CT return uint5_t { |
| 505 | if (ischosen(dl_block.data)) { |
| 506 | return dl_block.data.mac_hdr.hdr_ext.tfi; |
| 507 | } else if (ischosen(dl_block.data_egprs)) { |
| 508 | return dl_block.data_egprs.mac_hdr.tfi; |
| 509 | } else { /* Ctrl block */ |
| 510 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS_GPRS(?, tr_PktUlAssGprsDynamic(tr_DynamicAllocation(?))))) { |
| 511 | return dl_block.ctrl.payload.u.ul_assignment.gprs.dyn_block_alloc.ul_tfi_assignment; |
| 512 | } |
| 513 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS_EGPRS(?, tr_PktUlAssEgprsDynamic(tr_DynamicAllocation(?))))) { |
| 514 | return dl_block.ctrl.payload.u.ul_assignment.egprs.dyn_block_alloc.ul_tfi_assignment; |
| 515 | } |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 516 | if (match(dl_block, tr_RLCMAC_DL_PACKET_ASS(?))) { |
| 517 | return dl_block.ctrl.payload.u.dl_assignment.dl_tfi_assignment; |
| 518 | } |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 519 | } |
| 520 | setverdict(fail, "DlBlock doesn't contain a TFI:", dl_block); |
| 521 | f_shutdown(__BFILE__, __LINE__); |
| 522 | return 0; /* make compiler happy */ |
| 523 | } |
| 524 | |
| 525 | /* Get the Chan coding command from a dl block containing PACCH UL Assignment */ |
| 526 | function f_rlcmac_dl_block_get_assigned_ul_cs_mcs(RlcmacDlBlock dl_block) |
| 527 | runs on MS_BTS_IFACE_CT return CodingScheme { |
| 528 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS_GPRS(?, tr_PktUlAssGprsDynamic(?)))) { |
| 529 | return f_rlcmac_block_ChCodingCommand2cs_mcs(dl_block.ctrl.payload.u.ul_assignment.gprs.ch_coding_cmd); |
| 530 | } |
| 531 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS_EGPRS(?, tr_PktUlAssEgprsDynamic(?)))) { |
| 532 | return f_rlcmac_block_EgprsChCodingCommand2cs_mcs(dl_block.ctrl.payload.u.ul_assignment.egprs.chan_coding_cmd); |
| 533 | } |
| 534 | setverdict(fail, "DlBlock doesn't contain CS_MCS information:", dl_block); |
| 535 | f_shutdown(__BFILE__, __LINE__); |
| 536 | return CS_1; /* make compiler happy */ |
| 537 | } |
| 538 | |
| 539 | /* TS 44.060 sec 12.3 Ack/Nack Description */ |
| 540 | function f_acknackdesc_ack_block(inout AckNackDescription desc, RlcmacDlBlock dl_block, BIT1 final_ack := '0'B) |
| 541 | { |
| 542 | var uint7_t bsn; |
| 543 | var integer i; |
| 544 | var integer inc; |
| 545 | |
| 546 | if (ischosen(dl_block.data)) { |
| 547 | bsn := dl_block.data.mac_hdr.hdr_ext.bsn; |
| 548 | } else { |
| 549 | bsn := dl_block.data_egprs.mac_hdr.bsn1; |
| 550 | } |
| 551 | |
| 552 | inc := bsn - desc.starting_seq_nr + 1; |
| 553 | /* Filling hole? */ |
| 554 | if (bsn < desc.starting_seq_nr) { |
| 555 | desc.receive_block_bitmap[lengthof(desc.receive_block_bitmap) - (desc.starting_seq_nr - bsn)] := int2bit(1, 1); |
| 556 | return; |
| 557 | } |
| 558 | |
| 559 | /* SSN is increased, and so RBB values need to be moved */ |
| 560 | for (i := 0; i < lengthof(desc.receive_block_bitmap) - inc; i := i+1) { |
| 561 | desc.receive_block_bitmap[i] := desc.receive_block_bitmap[i + inc]; |
| 562 | } |
| 563 | for (i := lengthof(desc.receive_block_bitmap) - inc; i < lengthof(desc.receive_block_bitmap) - 1; i := i+1) { |
| 564 | desc.receive_block_bitmap[i] := int2bit(0, 1); |
| 565 | } |
| 566 | /* Now we can set current bit and update SSN */ |
| 567 | desc.starting_seq_nr := bsn + 1; |
| 568 | desc.receive_block_bitmap[lengthof(desc.receive_block_bitmap) - 1] := int2bit(1, 1); |
| 569 | |
| 570 | /* Finally update the final_ack bit as requested: */ |
| 571 | desc.final_ack := final_ack; |
| 572 | } |
| 573 | |
| 574 | /* This function can be used to send DATA.cnf in response to the IUT originated DATA.req. |
| 575 | * NOTE: it's the responsibility of caller to make sure that pcu_msg contains u.data_req. */ |
| 576 | function f_pcuif_tx_data_cnf(in PCUIF_Message pcu_msg) |
| 577 | runs on MS_BTS_IFACE_CT { |
| 578 | var PCUIF_Message pcu_msg_cnf := { |
| 579 | msg_type := PCU_IF_MSG_DATA_CNF, |
| 580 | bts_nr := pcu_msg.bts_nr, |
| 581 | spare := pcu_msg.spare, |
| 582 | u := { data_cnf := pcu_msg.u.data_req } |
| 583 | }; |
| 584 | |
| 585 | /* PCU wants DATA.cnf containing basically everything that was in DATA.req, |
| 586 | * but PCU_IF_SAPI_PCH is a special case - paging group shall be excluded. */ |
| 587 | if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { |
| 588 | pcu_msg_cnf.u.data_cnf.data := substr(pcu_msg.u.data_req.data, 3, |
| 589 | pcu_msg.u.data_req.len - 3); |
| 590 | } |
| 591 | |
| 592 | BTS.send(pcu_msg_cnf); |
| 593 | } |
| 594 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 595 | //////////////////////// |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 596 | // Low level APIs |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 597 | //////////////////////// |
| 598 | |
Vadim Yanitskiy | 7466c33 | 2020-05-28 20:41:19 +0700 | [diff] [blame] | 599 | function f_pcuif_rx_imm_ass(template PCUIF_Sapi sapi := PCU_IF_SAPI_AGCH, |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 600 | template GsmRrMessage t_imm_ass := ?, |
| 601 | template (present) TsTrxBtsNum nr := tr_TsTrxBtsNum) |
Vadim Yanitskiy | 7466c33 | 2020-05-28 20:41:19 +0700 | [diff] [blame] | 602 | runs on MS_BTS_IFACE_CT return GsmRrMessage { |
| 603 | var GsmRrMessage rr_imm_ass; |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 604 | var PCUIF_Message pcu_msg; |
| 605 | var octetstring data; |
| 606 | timer T; |
| 607 | |
| 608 | T.start(2.0); |
| 609 | alt { |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 610 | [] BTS.receive(tr_PCUIF_DATA_REQ(nr.bts_nr, nr.trx_nr, ts_nr := 0, |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 611 | sapi := sapi, data := ?)) -> value pcu_msg { |
| 612 | /* On PCH the payload is prefixed with paging group (3 octets): skip it. |
| 613 | * TODO: add an additional template parameter, so we can match it. */ |
| 614 | if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { |
| 615 | data := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); |
| 616 | } else { |
| 617 | data := pcu_msg.u.data_req.data; |
| 618 | } |
| 619 | |
| 620 | rr_imm_ass := dec_GsmRrMessage(data); |
| 621 | if (not match(rr_imm_ass, t_imm_ass)) { |
| 622 | /* Not for us? Wait for more. */ |
| 623 | repeat; |
| 624 | } |
| 625 | |
| 626 | log("Rx Immediate Assignment: ", rr_imm_ass); |
Pau Espin Pedrol | 34c940b | 2020-05-28 19:56:11 +0700 | [diff] [blame] | 627 | |
| 628 | /* Send DATA.cnf back to the IUT (only needed for PCH) */ |
| 629 | if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { |
| 630 | f_pcuif_tx_data_cnf(pcu_msg); |
| 631 | } |
| 632 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 633 | setverdict(pass); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 634 | } |
| 635 | [] BTS.receive { repeat; } |
| 636 | [] T.timeout { |
| 637 | setverdict(fail, "Timeout waiting for Immediate Assignment"); |
Pau Espin Pedrol | fddc20b | 2020-05-28 19:50:29 +0700 | [diff] [blame] | 638 | f_shutdown(__BFILE__, __LINE__); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 639 | } |
| 640 | } |
| 641 | |
Vadim Yanitskiy | 7466c33 | 2020-05-28 20:41:19 +0700 | [diff] [blame] | 642 | return rr_imm_ass; |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 643 | } |
| 644 | |
| 645 | /* One phase packet access (see 3GPP TS 44.018, table 9.1.8.1) */ |
| 646 | const BIT8 chan_req_def := '01111000'B; |
| 647 | |
| 648 | /* Establish an Uplink TBF by sending RACH.ind towards the PCU */ |
Vadim Yanitskiy | 28d18e1 | 2020-05-29 15:25:59 +0700 | [diff] [blame] | 649 | function f_pcuif_tx_rach_rx_imm_ass(uint16_t ra := bit2int(chan_req_def), |
| 650 | uint8_t is_11bit := 0, |
| 651 | PCUIF_BurstType burst_type := BURST_TYPE_0, |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 652 | TimingAdvance ta := 0, |
| 653 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Vadim Yanitskiy | 7466c33 | 2020-05-28 20:41:19 +0700 | [diff] [blame] | 654 | runs on MS_BTS_IFACE_CT return GsmRrMessage { |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 655 | var uint32_t fn; |
| 656 | |
| 657 | /* FIXME: ask the BTS component to give us the current TDMA fn */ |
| 658 | fn := 1337 + ta; |
| 659 | |
| 660 | /* Send RACH.ind */ |
| 661 | log("Sending RACH.ind on fn=", fn, " with RA=", ra, ", TA=", ta); |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 662 | BTS.send(ts_PCUIF_RACH_IND(nr.bts_nr, nr.trx_nr, ts_nr := 0, |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 663 | ra := ra, is_11bit := is_11bit, |
| 664 | burst_type := burst_type, |
| 665 | fn := fn, arfcn := 871, |
| 666 | qta := ta * 4)); |
| 667 | |
| 668 | /* 3GPP TS 44.018, table 9.1.8.1, note 2b: Request Reference shall be set to 127 |
| 669 | * when Immediate Assignment is triggered by EGPRS Packet Channel Request. Here |
| 670 | * we assume that 11 bit RA always contains EGPRS Packet Channel Request. */ |
| 671 | if (is_11bit != 0) { ra := 127; } |
| 672 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 673 | /* Expect Immediate (TBF) Assignment on the same TS/TRX/BTS */ |
| 674 | return f_pcuif_rx_imm_ass(PCU_IF_SAPI_AGCH, tr_IMM_TBF_ASS(false, ra, fn), nr); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 675 | } |
| 676 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 677 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 678 | function f_pcuif_tx_data_ind(octetstring data, int16_t lqual_cb := 0, uint32_t fn := 0, |
| 679 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 680 | runs on MS_BTS_IFACE_CT { |
| 681 | var template RAW_PCU_EventParam ev_param := {tdma_fn := ? }; |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 682 | BTS.send(ts_PCUIF_DATA_IND(nr.bts_nr, nr.trx_nr, nr.ts_nr, nr.blk_nr, |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 683 | sapi := PCU_IF_SAPI_PDTCH, data := data, |
| 684 | fn := fn, arfcn := 871, lqual_cb := lqual_cb)); |
| 685 | if (fn != 0) { |
| 686 | ev_param := {tdma_fn := fn }; |
| 687 | } |
| 688 | BTS.receive(tr_RAW_PCU_EV(TDMA_EV_PDTCH_BLOCK_SENT, ev_param)); |
| 689 | } |
| 690 | |
| 691 | /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 692 | function f_pcuif_rx_data_req(out PCUIF_Message pcu_msg, |
| 693 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 694 | runs on MS_BTS_IFACE_CT { |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 695 | BTS.send(ts_PCUIF_RTS_REQ(nr.bts_nr, nr.trx_nr, nr.ts_nr, |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 696 | sapi := PCU_IF_SAPI_PDTCH, fn := 0, |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 697 | arfcn := 871, block_nr := nr.blk_nr)); |
| 698 | BTS.receive(tr_PCUIF_DATA_REQ(nr.bts_nr, nr.trx_nr, nr.ts_nr, |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 699 | sapi := PCU_IF_SAPI_PDTCH)) -> value pcu_msg; |
| 700 | } |
| 701 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 702 | /* Expect a Paging Request Type 1 from PCU on PCUIF on specified sapi. */ |
| 703 | function f_pcuif_rx_pch_pag_req1(template MobileIdentityV mi1 := ?, |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 704 | template integer pag_group := ?, |
| 705 | template (present) TsTrxBtsNum nr := tr_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 706 | runs on MS_BTS_IFACE_CT return GsmRrMessage { |
| 707 | var GsmRrMessage rr_pag_req1; |
| 708 | var PCUIF_Message pcu_msg; |
| 709 | var octetstring imsi_suff_octstr; |
| 710 | var integer pag_group_rx; |
| 711 | var octetstring macblock; |
| 712 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 713 | BTS.receive(tr_PCUIF_DATA_REQ(nr.bts_nr, nr.trx_nr, nr.ts_nr, |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 714 | sapi := PCU_IF_SAPI_PCH)) -> value pcu_msg; |
| 715 | |
| 716 | /* First 3 bytes contain IMSI suffix to calculate paging group: */ |
| 717 | imsi_suff_octstr := substr(pcu_msg.u.data_req.data, 0, 3); |
| 718 | pag_group_rx := str2int(oct2char(imsi_suff_octstr[0])) * 100 + |
| 719 | str2int(oct2char(imsi_suff_octstr[1])) * 10 + |
| 720 | str2int(oct2char(imsi_suff_octstr[2])); |
| 721 | |
| 722 | /* Make sure we've got RR Paging Request Type 1 for a given MI */ |
| 723 | macblock := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); |
| 724 | rr_pag_req1 := dec_GsmRrMessage(macblock); |
| 725 | if (not match(rr_pag_req1, tr_PAG_REQ1(tr_MI_LV(mi1)))) { |
| 726 | setverdict(fail, "Failed to match Paging Request Type 1: ", rr_pag_req1); |
| 727 | f_shutdown(__BFILE__, __LINE__); |
| 728 | } |
| 729 | |
| 730 | /* Make sure that received paging froup matches the expected one */ |
| 731 | if (not match(pag_group_rx, pag_group)) { |
| 732 | setverdict(fail, "Paging group", pag_group_rx, " does not match expected ", pag_group); |
| 733 | f_shutdown(__BFILE__, __LINE__); |
| 734 | } |
| 735 | |
| 736 | f_pcuif_tx_data_cnf(pcu_msg); |
| 737 | return rr_pag_req1; |
| 738 | } |
| 739 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 740 | function f_rx_rlcmac_dl_block(out RlcmacDlBlock dl_block, out uint32_t dl_fn, |
| 741 | template (present) CodingScheme exp_cs_mcs := ?, |
| 742 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 743 | runs on MS_BTS_IFACE_CT { |
| 744 | var PCUIF_Message pcu_msg; |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 745 | f_pcuif_rx_data_req(pcu_msg, nr := nr); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 746 | dl_block := dec_RlcmacDlBlock(pcu_msg.u.data_req.data); |
| 747 | dl_fn := pcu_msg.u.data_req.fn; |
| 748 | |
| 749 | var integer len := lengthof(pcu_msg.u.data_req.data); |
| 750 | var CodingScheme cs_mcs := f_rlcmac_block_len2cs_mcs(len) |
| 751 | if (not match(f_rlcmac_block_len2cs_mcs(len), exp_cs_mcs)) { |
| 752 | setverdict(fail, "Failed to match Coding Scheme exp ", exp_cs_mcs, " vs ", cs_mcs, " (", len, ")"); |
| 753 | f_shutdown(__BFILE__, __LINE__); |
| 754 | } |
| 755 | } |
| 756 | |
Pau Espin Pedrol | cdbe903 | 2020-07-07 20:20:42 +0200 | [diff] [blame] | 757 | function f_rx_rlcmac_dl_block_exp_ack_nack(out RlcmacDlBlock dl_block, out uint32_t poll_fn, |
| 758 | template RlcmacDlBlock acknack_tmpl := (tr_RLCMAC_UL_ACK_NACK_GPRS(ul_tfi := ?), |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 759 | tr_RLCMAC_UL_ACK_NACK_EGPRS(ul_tfi := ?)), |
| 760 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 761 | runs on MS_BTS_IFACE_CT { |
| 762 | var uint32_t dl_fn; |
| 763 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 764 | f_rx_rlcmac_dl_block(dl_block, dl_fn, nr := nr); |
Pau Espin Pedrol | cdbe903 | 2020-07-07 20:20:42 +0200 | [diff] [blame] | 765 | if (match(dl_block, acknack_tmpl)) { |
Pau Espin Pedrol | 692222c | 2020-05-17 00:25:37 +0200 | [diff] [blame] | 766 | poll_fn := f_rrbp_ack_fn(dl_fn, dl_block.ctrl.mac_hdr.rrbp); |
| 767 | return; |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 768 | } |
Pau Espin Pedrol | 692222c | 2020-05-17 00:25:37 +0200 | [diff] [blame] | 769 | setverdict(fail, "Failed to match Packet Uplink ACK / NACK:", dl_block); |
| 770 | f_shutdown(__BFILE__, __LINE__); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 771 | } |
| 772 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 773 | function f_rx_rlcmac_dl_block_exp_dummy(out RlcmacDlBlock dl_block, |
| 774 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 775 | runs on MS_BTS_IFACE_CT { |
| 776 | var uint32_t dl_fn; |
| 777 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 778 | f_rx_rlcmac_dl_block(dl_block, dl_fn, nr := nr); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 779 | if (not match(dl_block, tr_RLCMAC_DUMMY_CTRL())) { |
| 780 | setverdict(fail, "Failed to match Packet DUMMY DL"); |
| 781 | f_shutdown(__BFILE__, __LINE__); |
| 782 | } |
| 783 | } |
| 784 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 785 | function f_rx_rlcmac_dl_block_exp_pkt_pag_req(out RlcmacDlBlock dl_block, |
| 786 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 787 | runs on MS_BTS_IFACE_CT { |
| 788 | var uint32_t dl_fn; |
| 789 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 790 | f_rx_rlcmac_dl_block(dl_block, dl_fn, nr := nr); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 791 | if (not match(dl_block, tr_RLCMAC_PACKET_PAG_REQ())) { |
| 792 | setverdict(fail, "Failed to match Packet Paging Request: ", dl_block, " vs ", tr_RLCMAC_PACKET_PAG_REQ()); |
| 793 | f_shutdown(__BFILE__, __LINE__); |
| 794 | } |
| 795 | } |
| 796 | |
| 797 | /* This function does what could probably be done with templates */ |
| 798 | function f_rlcmac_dl_block_verify_data_gprs(in RlcmacDlDataBlock data_block, |
| 799 | template (present) octetstring data := ?, |
| 800 | template (present) uint7_t exp_bsn := ?, |
| 801 | template (present) CodingScheme exp_cs := ?) |
| 802 | runs on MS_BTS_IFACE_CT { |
| 803 | if (not match(data_block.mac_hdr.hdr_ext.bsn, exp_bsn)) { |
| 804 | setverdict(fail, "DL block BSN doesn't match: ", |
| 805 | data_block.mac_hdr.hdr_ext.bsn, " vs exp ", exp_bsn); |
| 806 | } |
| 807 | |
| 808 | if (lengthof(data_block.blocks) < 1) { |
| 809 | setverdict(fail, "DL block has no LLC payload: ", data_block); |
| 810 | f_shutdown(__BFILE__, __LINE__); |
| 811 | } |
| 812 | |
| 813 | if (not match(data_block.blocks[0].payload, data)) { |
| 814 | setverdict(fail, "Failed to match content of LLC payload in DL Block: ", |
| 815 | data_block.blocks[0].payload, " vs ", data); |
| 816 | f_shutdown(__BFILE__, __LINE__); |
| 817 | } |
| 818 | |
| 819 | /* Check next data blocks contain dummy frames */ |
| 820 | if (lengthof(data_block.blocks) > 1 and substr(data_block.blocks[1].payload, 0, 3) != '43C001'O) { |
| 821 | setverdict(fail, "Second data payload is not a dummy frame: ", |
| 822 | data_block.blocks[1].payload); |
| 823 | f_shutdown(__BFILE__, __LINE__); |
| 824 | } |
| 825 | |
| 826 | /* TODO: check exp_cs */ |
| 827 | } |
| 828 | |
| 829 | /* This function does what could probably be done with templates */ |
| 830 | function f_rlcmac_dl_block_verify_data_egprs(in RlcmacDlEgprsDataBlock data_block, |
| 831 | template (present) octetstring data := ?, |
| 832 | template (present) uint14_t exp_bsn := ?, |
| 833 | template (present) CodingScheme exp_cs := ?) |
| 834 | runs on MS_BTS_IFACE_CT { |
| 835 | if (not match(data_block.mac_hdr.bsn1, exp_bsn)) { |
| 836 | setverdict(fail, "DL block BSN doesn't match: ", |
| 837 | data_block.mac_hdr.bsn1, " vs exp ", exp_bsn); |
| 838 | } |
| 839 | |
| 840 | if (lengthof(data_block.blocks) < 1) { |
| 841 | setverdict(fail, "DL block has no LLC payload: ", data_block); |
| 842 | f_shutdown(__BFILE__, __LINE__); |
| 843 | } |
| 844 | |
| 845 | if (not match(data_block.blocks[0].payload, data)) { |
| 846 | setverdict(fail, "Failed to match content of LLC payload in DL Block: ", |
| 847 | data_block.blocks[0].payload, " vs ", data); |
| 848 | f_shutdown(__BFILE__, __LINE__); |
| 849 | } |
| 850 | |
| 851 | /* Check next data blocks contain dummy frames */ |
| 852 | if (lengthof(data_block.blocks) > 1 and substr(data_block.blocks[1].payload, 0, 3) != '43C001'O) { |
| 853 | setverdict(fail, "Second data payload is not a dummy frame: ", |
| 854 | data_block.blocks[1].payload); |
| 855 | f_shutdown(__BFILE__, __LINE__); |
| 856 | } |
| 857 | |
| 858 | /* TODO: Check exp_cs. In the case of EGPRS, first check mac_hdr.header_type and then decode CPS = exp_cs based on mac_hdr.header_type. |
| 859 | See wireshark's egprs_Header_type1_coding_puncturing_scheme_to_mcs. */ |
| 860 | } |
| 861 | |
| 862 | /* High level (task specific) helper for receiving and matching GPRS/EGPRS data blocks */ |
| 863 | function f_rx_rlcmac_dl_block_exp_data(out RlcmacDlBlock dl_block, out uint32_t dl_fn, |
| 864 | template (present) octetstring data := ?, |
| 865 | template (present) uint7_t exp_bsn := ?, |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 866 | template (present) CodingScheme exp_cs := ?, |
| 867 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 868 | runs on MS_BTS_IFACE_CT { |
| 869 | /* FIXME: ideally we should use an alt statement with timeout here, rather than |
| 870 | * having +100500 layers of abstraction. This would facilitate developing the |
| 871 | * multi-TBF/-TRX/-BTS tests, where you cannot expect that the first received |
| 872 | * block is exactly what you need. */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 873 | f_rx_rlcmac_dl_block(dl_block, dl_fn, nr := nr); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 874 | |
| 875 | /* Make sure it's either GPRS or EGPRS data block */ |
| 876 | if (not match(dl_block, tr_RLCMAC_DATA)) { |
| 877 | setverdict(fail, "Failed to match DL DATA: ", dl_block, " vs ", tr_RLCMAC_DATA); |
| 878 | f_shutdown(__BFILE__, __LINE__); |
| 879 | } |
| 880 | |
| 881 | if (ischosen(dl_block.data_egprs)) { |
| 882 | f_rlcmac_dl_block_verify_data_egprs(dl_block.data_egprs, data, exp_bsn, exp_cs); |
| 883 | } else if (ischosen(dl_block.data)) { |
| 884 | f_rlcmac_dl_block_verify_data_gprs(dl_block.data, data, exp_bsn, exp_cs); |
| 885 | } else { |
| 886 | /* Should not happen, but the caller may theoretically give us a template for CTRL */ |
| 887 | setverdict(fail, "DL block is neither GPRS nor EGPRS data block: ", dl_block); |
| 888 | f_shutdown(__BFILE__, __LINE__); |
| 889 | } |
| 890 | } |
| 891 | |
| 892 | function f_dl_block_ack_fn(in RlcmacDlBlock dl_block, uint32_t dl_fn) |
| 893 | runs on MS_BTS_IFACE_CT return uint32_t { |
| 894 | var boolean rrbp_valid; |
| 895 | var MacRrbp rrbp; |
| 896 | |
| 897 | /* The argument must be either a GPRS or EGPRS data block */ |
| 898 | if (ischosen(dl_block.data_egprs)) { |
| 899 | rrbp_valid := true; /* always valid */ |
| 900 | rrbp := dl_block.data_egprs.mac_hdr.rrbp; |
| 901 | } else if (ischosen(dl_block.data)) { |
| 902 | rrbp_valid := dl_block.data.mac_hdr.mac_hdr.rrbp_valid; |
| 903 | rrbp := dl_block.data.mac_hdr.mac_hdr.rrbp; |
| 904 | } else { |
| 905 | rrbp_valid := dl_block.ctrl.mac_hdr.rrbp_valid; |
| 906 | rrbp := dl_block.ctrl.mac_hdr.rrbp; |
| 907 | } |
| 908 | |
| 909 | /* Make sure that the given block really needs to be ACKnowledged */ |
| 910 | if (not rrbp_valid) { |
| 911 | setverdict(fail, "DL block shall not be ACKnowledged, field RRBP is not valid"); |
| 912 | f_shutdown(__BFILE__, __LINE__); |
| 913 | } |
| 914 | |
| 915 | return f_rrbp_ack_fn(dl_fn, rrbp); |
| 916 | } |
| 917 | |
| 918 | function f_pkt_paging_match_tmsi(in PacketPagingReq req, template GsmTmsi tmsi) |
| 919 | runs on MS_BTS_IFACE_CT { |
| 920 | if (not match(req.repeated_pageinfo.cs.tmsi, tmsi)) { |
| 921 | setverdict(fail, "Mobile Identity (TMSI/P-TMSI) mismatch: ", |
| 922 | "expected: ", tmsi, "got: ", req.repeated_pageinfo.cs.tmsi); |
| 923 | f_shutdown(__BFILE__, __LINE__); |
| 924 | } |
| 925 | } |
| 926 | |
| 927 | } |