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 { |
| 79 | GsmRrMessage rr_imm_ass, |
| 80 | PacketDlAssignChan ass, |
| 81 | uint5_t tfi, |
| 82 | AckNackDescription acknack_desc |
| 83 | }; |
| 84 | |
| 85 | type union PacketUlAssignChan { |
| 86 | PacketUlAssign ccch, |
| 87 | EgprsUlAss ccch_egprs, |
| 88 | PacketUlAssignment pacch |
| 89 | }; |
| 90 | |
| 91 | type record UlTbf { |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 92 | GsmRrMessage rr_imm_ass optional, |
| 93 | PacketUlAssignChan ass optional, |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 94 | uint5_t tfi, |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 95 | uint3_t usf[8], |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 96 | boolean is_egprs, |
| 97 | uint14_t bsn, |
| 98 | CodingScheme tx_cs_mcs |
| 99 | }; |
| 100 | |
| 101 | type record GprsMS { |
| 102 | hexstring imsi, |
| 103 | GprsTlli tlli, |
| 104 | uint16_t ra, |
| 105 | uint8_t ra_is_11bit, |
| 106 | PCUIF_BurstType burst_type, |
| 107 | TimingAdvance ta, |
| 108 | int16_t lqual_cb, |
| 109 | UlTbf ul_tbf optional, /* TODO: Only 1 UL tbf supported for now */ |
| 110 | DlTbf dl_tbf optional /* TODO: Only 1 DL tbf supported for now */ |
| 111 | }; |
| 112 | type record of GprsMS GprsMSArray; |
| 113 | |
| 114 | template AckNackDescription t_AckNackDescription_init := { |
| 115 | final_ack := '0'B, |
| 116 | starting_seq_nr := 0, |
| 117 | receive_block_bitmap := '0000000000000000000000000000000000000000000000000000000000000000'B |
| 118 | } |
| 119 | |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 120 | const uint3_t USF_UNUSED := 7; /* used to indicate PRACH */ |
| 121 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 122 | template (value) GprsMS t_GprsMS_def := { |
| 123 | imsi := f_gen_imsi(42), |
| 124 | tlli := '00000001'O, |
| 125 | ra := bit2int(chan_req_def), |
| 126 | ra_is_11bit := 0, |
| 127 | burst_type := BURST_TYPE_0, |
| 128 | ta := 0, |
| 129 | lqual_cb := 0, |
| 130 | ul_tbf := omit, |
| 131 | dl_tbf := omit |
| 132 | }; |
| 133 | |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 134 | template (value) UlTbf t_UlTbf_def := { |
| 135 | rr_imm_ass := omit, |
| 136 | ass := omit, |
| 137 | tfi := 0, |
| 138 | usf := { USF_UNUSED, USF_UNUSED, USF_UNUSED, USF_UNUSED, USF_UNUSED, USF_UNUSED, USF_UNUSED, USF_UNUSED }, |
| 139 | is_egprs := false, |
| 140 | bsn := 0, |
| 141 | tx_cs_mcs := CS_1 |
| 142 | }; |
| 143 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 144 | type component MS_BTS_IFACE_CT { |
| 145 | /* Virtual BTS component */ |
| 146 | var RAW_PCU_BTS_CT vc_BTS; |
| 147 | /* Connection to the BTS component (one for now) */ |
| 148 | port RAW_PCU_MSG_PT BTS; |
| 149 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 150 | /* Support only 1 ms for now */ |
| 151 | var GprsMS g_ms[1]; |
| 152 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 153 | /* Value at which Countdown Procedure starts. Announced by network (GPRS Cell Options as per TS 04.60 Chapter 12.24) */ |
| 154 | var uint4_t g_bs_cv_max := 4; |
| 155 | } |
| 156 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 157 | function f_init_gprs_ms(template (value) GprsMS ms_params := t_GprsMS_def) runs on MS_BTS_IFACE_CT |
| 158 | { |
| 159 | g_ms[0] := valueof(ms_params); |
| 160 | } |
| 161 | |
| 162 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 163 | function f_shutdown(charstring file, integer line, |
| 164 | boolean final := false) |
| 165 | runs on MS_BTS_IFACE_CT { |
| 166 | /* Determine if the test case was aborted in the middle */ |
| 167 | if (not final) { |
| 168 | log("Test case ", testcasename(), " aborted at ", file, ":", line); |
| 169 | } else { |
| 170 | /* Guard verdict to avoid 'none' */ |
| 171 | setverdict(pass); |
| 172 | } |
| 173 | |
| 174 | /* Properly shutdown virtual BTS and its clock generator */ |
| 175 | BTS.send(ts_RAW_PCU_CMD(GENERAL_CMD_SHUTDOWN)); |
| 176 | vc_BTS.done; /* wait untill it's done */ |
| 177 | |
| 178 | /* Shutdown the others and MTC */ |
| 179 | all component.stop; |
| 180 | mtc.stop; |
| 181 | } |
| 182 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 183 | function f_ultbf_new_from_rr_imm_ass(in GsmRrMessage rr_imm_ass) |
| 184 | runs on MS_BTS_IFACE_CT return UlTbf { |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 185 | var UlTbf ul_tbf := valueof(t_UlTbf_def); |
| 186 | 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] | 187 | |
| 188 | ul_tbf.rr_imm_ass := rr_imm_ass; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 189 | |
| 190 | /* Make sure we received an UL TBF Assignment */ |
| 191 | if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := false, rest := tr_IaRestOctets_ULAss(?)))) { |
| 192 | ul_tbf.ass.ccch := rr_imm_ass.payload.imm_ass.rest_octets.hh.pa.uldl.ass.ul; |
| 193 | log("Rx Uplink TBF GPRS assignment: ", ul_tbf.ass.ccch); |
| 194 | ul_tbf.is_egprs := false; |
| 195 | if (match(ul_tbf.ass.ccch, tr_PacketUlDynAssign)) { |
| 196 | ul_tbf.tfi := ul_tbf.ass.ccch.dynamic.tfi_assignment; |
Pau Espin Pedrol | 9040111 | 2020-05-20 17:36:27 +0200 | [diff] [blame] | 197 | 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] | 198 | ul_tbf.usf[tn_allocated] := ul_tbf.ass.ccch.dynamic.usf; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 199 | } else if (match(ul_tbf.ass.ccch, tr_PacketUlSglAssign)) { |
| 200 | /* Nothing to do here yet */ |
| 201 | } |
| 202 | } else if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := false, rest := tr_IaRestOctets_EGPRSULAss(?)))) { |
| 203 | ul_tbf.ass.ccch_egprs := rr_imm_ass.payload.imm_ass.rest_octets.lh.egprs_ul; |
| 204 | log("Rx Uplink TBF EGPRS assignment: ", ul_tbf.ass.ccch_egprs); |
| 205 | ul_tbf.is_egprs := true; |
| 206 | if (match(ul_tbf.ass.ccch_egprs, tr_EgprsUlAssDynamic)) { |
| 207 | ul_tbf.tfi := ul_tbf.ass.ccch_egprs.dynamic.tfi_assignment; |
Pau Espin Pedrol | 9040111 | 2020-05-20 17:36:27 +0200 | [diff] [blame] | 208 | 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] | 209 | 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] | 210 | } else if (match(ul_tbf.ass.ccch_egprs, tr_EgprsUlAssMultiblock)) { |
| 211 | /* Nothing to do here yet */ |
| 212 | } |
| 213 | } else { |
| 214 | setverdict(fail, "Failed to match UL TBF Assignment: ", rr_imm_ass); |
| 215 | f_shutdown(__BFILE__, __LINE__); |
| 216 | } |
| 217 | |
| 218 | setverdict(pass); |
| 219 | return ul_tbf; |
| 220 | } |
| 221 | |
| 222 | function f_ultbf_new_from_ass_pacch(RlcmacDlBlock dl_block) |
| 223 | runs on MS_BTS_IFACE_CT return UlTbf { |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 224 | var UlTbf ul_tbf := valueof(t_UlTbf_def); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 225 | |
| 226 | ul_tbf.ass.pacch := dl_block.ctrl.payload.u.ul_assignment; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 227 | ul_tbf.tx_cs_mcs := f_rlcmac_dl_block_get_assigned_ul_cs_mcs(dl_block); |
| 228 | ul_tbf.tfi := f_rlcmac_dl_block_get_tfi(dl_block); |
| 229 | /* TODO: handle GlobalTfiOrTlli tfi_or_tlli from pkt_ul_ass */ |
| 230 | |
| 231 | /* TODO: support single block allocation */ |
| 232 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS_GPRS(?, tr_PktUlAssGprsDynamic(tr_DynamicAllocation(?))))) { |
| 233 | ul_tbf.tfi := dl_block.ctrl.payload.u.ul_assignment.gprs.dyn_block_alloc.ul_tfi_assignment; |
| 234 | ul_tbf.is_egprs := false; |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 235 | for (var integer i := 0; i < 8; i := i + 1) { |
| 236 | if (dl_block.ctrl.payload.u.ul_assignment.gprs.dyn_block_alloc.ts_allocation.ts[i].presence == '1'B) { |
| 237 | ul_tbf.usf[i] := dl_block.ctrl.payload.u.ul_assignment.gprs.dyn_block_alloc.ts_allocation.ts[i].usf_tn; |
| 238 | } |
| 239 | } |
| 240 | } 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] | 241 | ul_tbf.tfi := dl_block.ctrl.payload.u.ul_assignment.egprs.dyn_block_alloc.ul_tfi_assignment; |
| 242 | ul_tbf.is_egprs := true; |
Pau Espin Pedrol | eb98025 | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 243 | for (var integer i := 0; i < 8; i := i + 1) { |
| 244 | if (dl_block.ctrl.payload.u.ul_assignment.egprs.dyn_block_alloc.ts_allocation.ts[i].presence == '1'B) { |
| 245 | ul_tbf.usf[i] := dl_block.ctrl.payload.u.ul_assignment.egprs.dyn_block_alloc.ts_allocation.ts[i].usf_tn; |
| 246 | } |
| 247 | } |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 248 | } |
| 249 | return ul_tbf; |
| 250 | } |
| 251 | |
| 252 | function f_dltbf_new_from_rr_imm_ass(in GsmRrMessage rr_imm_ass, template PacketDlAssign dl_ass := tr_PacketDlAssign(?)) |
| 253 | runs on MS_BTS_IFACE_CT return DlTbf { |
| 254 | var DlTbf dl_tbf; |
| 255 | |
| 256 | dl_tbf.rr_imm_ass := rr_imm_ass; |
| 257 | dl_tbf.acknack_desc := valueof(t_AckNackDescription_init); |
| 258 | |
| 259 | /* Make sure we received a DL TBF Assignment */ |
| 260 | if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := true, rest := tr_IaRestOctets_DLAss(dl_ass)))) { |
| 261 | dl_tbf.ass.ccch := rr_imm_ass.payload.imm_ass.rest_octets.hh.pa.uldl.ass.dl; |
| 262 | log("Rx Downlink TBF assignment: ", dl_tbf.ass); |
| 263 | } else { |
| 264 | setverdict(fail, "Failed to match DL TBF Assignment: ", rr_imm_ass); |
| 265 | f_shutdown(__BFILE__, __LINE__); |
| 266 | } |
| 267 | |
| 268 | /* TODO: match TLLI */ |
| 269 | if (dl_tbf.ass.ccch.group1_present == '1'B) { |
| 270 | dl_tbf.tfi := dl_tbf.ass.ccch.group1.tfi_assignment; |
| 271 | } else { |
| 272 | setverdict(fail, "Immediate Assignment contains no DL TFI"); |
| 273 | f_shutdown(__BFILE__, __LINE__); |
| 274 | } |
| 275 | |
| 276 | setverdict(pass); |
| 277 | return dl_tbf; |
| 278 | } |
| 279 | |
| 280 | /* TODO: get stuff from f_rx_rlcmac_dl_block_exp_pkt_ass */ |
| 281 | function f_dltbf_new_from_ass_pacch(RlcmacDlBlock dl_block) |
| 282 | runs on MS_BTS_IFACE_CT return DlTbf { |
| 283 | var DlTbf dl_tbf; |
| 284 | |
| 285 | dl_tbf.ass.pacch := dl_block.ctrl.payload.u.dl_assignment; |
| 286 | dl_tbf.tfi := f_rlcmac_dl_block_get_tfi(dl_block); |
| 287 | /* TODO: handle GlobalTfiOrTlli tfi_or_tlli from pkt_dl_ass */ |
| 288 | dl_tbf.acknack_desc := valueof(t_AckNackDescription_init); |
| 289 | return dl_tbf; |
| 290 | } |
| 291 | |
Pau Espin Pedrol | 05b6c17 | 2020-06-26 17:28:23 +0200 | [diff] [blame] | 292 | function f_ultbf_inc_bsn(inout UlTbf ul_tbf) |
| 293 | runs on MS_BTS_IFACE_CT { |
| 294 | ul_tbf.bsn := ul_tbf.bsn + 1; |
| 295 | ul_tbf.bsn := ul_tbf.bsn mod 128; /* FIXME: EGPRS SNS: 2048 */ |
| 296 | } |
| 297 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 298 | function f_ms_use_ra(inout GprsMS ms, uint16_t ra, uint8_t ra_is_11bit := 0) |
| 299 | runs on MS_BTS_IFACE_CT { |
| 300 | ms.ra_is_11bit := ra_is_11bit; |
| 301 | ms.ra := ra; |
| 302 | if (ra_is_11bit == 0) { |
| 303 | ms.burst_type := BURST_TYPE_0; |
| 304 | } else { |
| 305 | ms.burst_type := BURST_TYPE_1; |
| 306 | } |
| 307 | } |
| 308 | |
Vadim Yanitskiy | 7431e9e | 2020-07-21 01:59:17 +0700 | [diff] [blame] | 309 | 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] | 310 | template RlcmacDlBlock t_pkt_ass := ?, |
| 311 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 312 | runs on MS_BTS_IFACE_CT return RlcmacDlBlock { |
| 313 | var RlcmacDlBlock dl_block; |
| 314 | var uint32_t dl_fn; |
| 315 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 316 | f_rx_rlcmac_dl_block(dl_block, dl_fn, nr := nr); |
Vadim Yanitskiy | 7431e9e | 2020-07-21 01:59:17 +0700 | [diff] [blame] | 317 | if (not match(dl_block, t_pkt_ass)) { |
| 318 | setverdict(fail, "Failed to match Packet Assignment:", t_pkt_ass); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 319 | f_shutdown(__BFILE__, __LINE__); |
| 320 | } |
| 321 | |
| 322 | poll_fn := f_rrbp_ack_fn(dl_fn, dl_block.ctrl.mac_hdr.rrbp); |
| 323 | |
| 324 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS)) { |
| 325 | ms.ul_tbf := f_ultbf_new_from_ass_pacch(dl_block); |
| 326 | if (ms.ul_tbf.ass.pacch.identity.tlli.tlli != ms.tlli) { |
| 327 | setverdict(fail, "Wrong TLLI ", ms.ul_tbf.ass.pacch.identity.tlli, " received vs exp ", ms.tlli); |
| 328 | f_shutdown(__BFILE__, __LINE__); |
| 329 | } |
| 330 | } else if (match(dl_block, tr_RLCMAC_DL_PACKET_ASS)) { |
| 331 | ms.dl_tbf := f_dltbf_new_from_ass_pacch(dl_block); |
| 332 | /* TODO: match tlli from ms.dl_tbf.ass.pacch with ms.tlli), or error */ |
| 333 | } else { |
| 334 | setverdict(fail, "Should not happen:", dl_block); |
| 335 | f_shutdown(__BFILE__, __LINE__); |
| 336 | } |
| 337 | |
| 338 | return dl_block; |
| 339 | } |
| 340 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 341 | 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] | 342 | runs on MS_BTS_IFACE_CT { |
| 343 | var GsmRrMessage rr_imm_ass; |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 344 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 345 | 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] | 346 | ms.ul_tbf := f_ultbf_new_from_rr_imm_ass(rr_imm_ass); |
| 347 | } |
| 348 | |
Vadim Yanitskiy | 84d1dd5 | 2020-05-28 21:09:22 +0700 | [diff] [blame] | 349 | 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] | 350 | template GsmRrMessage t_imm_ass := tr_IMM_TBF_ASS(true, ?, ?), |
| 351 | template (present) TsTrxBtsNum nr := tr_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 352 | runs on MS_BTS_IFACE_CT { |
| 353 | var GsmRrMessage rr_imm_ass; |
| 354 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 355 | 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] | 356 | ms.dl_tbf := f_dltbf_new_from_rr_imm_ass(rr_imm_ass, tr_PacketDlAssign(ms.tlli)); |
| 357 | } |
| 358 | |
| 359 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 360 | function f_ms_tx_data_ind(inout GprsMS ms, octetstring data, uint32_t fn := 0, |
| 361 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 362 | runs on MS_BTS_IFACE_CT { |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 363 | 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] | 364 | } |
| 365 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 366 | function f_ms_tx_ul_block(inout GprsMS ms, template (value) RlcmacUlBlock ul_data, |
| 367 | uint32_t fn := 0, template (omit) CodingScheme force_cs_mcs := omit, |
| 368 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 369 | runs on MS_BTS_IFACE_CT return integer { |
| 370 | var octetstring data; |
| 371 | var integer padding_len; |
Pau Espin Pedrol | 245bfcb | 2020-06-30 20:17:07 +0200 | [diff] [blame] | 372 | var CodingScheme cs_mcs; |
| 373 | var uint32_t cs_mcs_len; |
| 374 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 375 | /* Encode the payload of DATA.ind */ |
| 376 | data := enc_RlcmacUlBlock(valueof(ul_data)); |
Pau Espin Pedrol | 245bfcb | 2020-06-30 20:17:07 +0200 | [diff] [blame] | 377 | |
| 378 | if (ispresent(force_cs_mcs)) { |
| 379 | cs_mcs := valueof(force_cs_mcs); |
| 380 | } else if (ischosen(ul_data.ctrl)) { |
| 381 | cs_mcs := CS_1; /* CTRL is always CS1 */ |
| 382 | } else { |
| 383 | /* Add padding to encode payload to minimum required CS/MCS: */ |
| 384 | cs_mcs := f_rlcmac_block_len_required_cs_mcs(lengthof(data), ischosen(ul_data.data_egprs)); |
| 385 | } |
| 386 | |
| 387 | cs_mcs_len := f_rlcmac_cs_mcs2block_len(cs_mcs); |
| 388 | padding_len := cs_mcs_len - lengthof(data); |
| 389 | if (padding_len < 0) { |
| 390 | setverdict(fail, "Unable to encode UL block of size ", lengthof(data), " with ", cs_mcs); |
| 391 | f_shutdown(__BFILE__, __LINE__); |
| 392 | } |
| 393 | data := f_pad_oct(data, cs_mcs_len, '00'O); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 394 | |
| 395 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 396 | f_ms_tx_data_ind(ms, data, fn, nr := nr); |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 397 | return padding_len; |
| 398 | } |
| 399 | |
| 400 | /* FIXME: Only supports sending CS-1 so far */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 401 | function f_ms_tx_ul_data_block(inout GprsMS ms, octetstring payload, |
| 402 | uint4_t cv := 15, boolean with_tlli := false, uint32_t fn := 0, |
| 403 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 404 | runs on MS_BTS_IFACE_CT return integer { |
| 405 | var template (value) RlcmacUlBlock ul_data; |
| 406 | ul_data := t_RLCMAC_UL_DATA(tfi := ms.ul_tbf.tfi, |
| 407 | cv := cv, |
| 408 | bsn := ms.ul_tbf.bsn, |
| 409 | blocks := {t_RLCMAC_LLCBLOCK(payload)}); |
| 410 | if (with_tlli) { |
| 411 | ul_data.data.mac_hdr.tlli_ind := true; |
| 412 | ul_data.data.tlli := ms.tlli; |
| 413 | } |
Pau Espin Pedrol | 05b6c17 | 2020-06-26 17:28:23 +0200 | [diff] [blame] | 414 | f_ultbf_inc_bsn(ms.ul_tbf); |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 415 | 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] | 416 | } |
| 417 | |
| 418 | /* 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] | 419 | function f_ms_tx_ul_data_block_multi(inout GprsMS ms, integer num_blocks := 1, boolean with_tlli := false, |
| 420 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 421 | runs on MS_BTS_IFACE_CT return octetstring { |
| 422 | var octetstring total_payload := ''O; |
| 423 | |
| 424 | for (var integer i := 0; i < num_blocks; i := i + 1) { |
| 425 | var integer padding_len; |
| 426 | var octetstring payload := f_rnd_octstring(10); |
| 427 | /* Prepare a new UL block (CV, random payload) */ |
| 428 | var integer cv := num_blocks - i - 1; |
| 429 | if (cv > g_bs_cv_max) { |
| 430 | cv := 15; |
| 431 | } |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 432 | 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] | 433 | total_payload := total_payload & payload & f_pad_oct(''O, padding_len, '00'O); |
| 434 | } |
| 435 | return total_payload; |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | function f_rlcmac_dl_block_get_tfi(RlcmacDlBlock dl_block) |
| 439 | runs on MS_BTS_IFACE_CT return uint5_t { |
| 440 | if (ischosen(dl_block.data)) { |
| 441 | return dl_block.data.mac_hdr.hdr_ext.tfi; |
| 442 | } else if (ischosen(dl_block.data_egprs)) { |
| 443 | return dl_block.data_egprs.mac_hdr.tfi; |
| 444 | } else { /* Ctrl block */ |
| 445 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS_GPRS(?, tr_PktUlAssGprsDynamic(tr_DynamicAllocation(?))))) { |
| 446 | return dl_block.ctrl.payload.u.ul_assignment.gprs.dyn_block_alloc.ul_tfi_assignment; |
| 447 | } |
| 448 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS_EGPRS(?, tr_PktUlAssEgprsDynamic(tr_DynamicAllocation(?))))) { |
| 449 | return dl_block.ctrl.payload.u.ul_assignment.egprs.dyn_block_alloc.ul_tfi_assignment; |
| 450 | } |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 451 | if (match(dl_block, tr_RLCMAC_DL_PACKET_ASS(?))) { |
| 452 | return dl_block.ctrl.payload.u.dl_assignment.dl_tfi_assignment; |
| 453 | } |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 454 | } |
| 455 | setverdict(fail, "DlBlock doesn't contain a TFI:", dl_block); |
| 456 | f_shutdown(__BFILE__, __LINE__); |
| 457 | return 0; /* make compiler happy */ |
| 458 | } |
| 459 | |
| 460 | /* Get the Chan coding command from a dl block containing PACCH UL Assignment */ |
| 461 | function f_rlcmac_dl_block_get_assigned_ul_cs_mcs(RlcmacDlBlock dl_block) |
| 462 | runs on MS_BTS_IFACE_CT return CodingScheme { |
| 463 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS_GPRS(?, tr_PktUlAssGprsDynamic(?)))) { |
| 464 | return f_rlcmac_block_ChCodingCommand2cs_mcs(dl_block.ctrl.payload.u.ul_assignment.gprs.ch_coding_cmd); |
| 465 | } |
| 466 | if (match(dl_block, tr_RLCMAC_UL_PACKET_ASS_EGPRS(?, tr_PktUlAssEgprsDynamic(?)))) { |
| 467 | return f_rlcmac_block_EgprsChCodingCommand2cs_mcs(dl_block.ctrl.payload.u.ul_assignment.egprs.chan_coding_cmd); |
| 468 | } |
| 469 | setverdict(fail, "DlBlock doesn't contain CS_MCS information:", dl_block); |
| 470 | f_shutdown(__BFILE__, __LINE__); |
| 471 | return CS_1; /* make compiler happy */ |
| 472 | } |
| 473 | |
| 474 | /* TS 44.060 sec 12.3 Ack/Nack Description */ |
| 475 | function f_acknackdesc_ack_block(inout AckNackDescription desc, RlcmacDlBlock dl_block, BIT1 final_ack := '0'B) |
| 476 | { |
| 477 | var uint7_t bsn; |
| 478 | var integer i; |
| 479 | var integer inc; |
| 480 | |
| 481 | if (ischosen(dl_block.data)) { |
| 482 | bsn := dl_block.data.mac_hdr.hdr_ext.bsn; |
| 483 | } else { |
| 484 | bsn := dl_block.data_egprs.mac_hdr.bsn1; |
| 485 | } |
| 486 | |
| 487 | inc := bsn - desc.starting_seq_nr + 1; |
| 488 | /* Filling hole? */ |
| 489 | if (bsn < desc.starting_seq_nr) { |
| 490 | desc.receive_block_bitmap[lengthof(desc.receive_block_bitmap) - (desc.starting_seq_nr - bsn)] := int2bit(1, 1); |
| 491 | return; |
| 492 | } |
| 493 | |
| 494 | /* SSN is increased, and so RBB values need to be moved */ |
| 495 | for (i := 0; i < lengthof(desc.receive_block_bitmap) - inc; i := i+1) { |
| 496 | desc.receive_block_bitmap[i] := desc.receive_block_bitmap[i + inc]; |
| 497 | } |
| 498 | for (i := lengthof(desc.receive_block_bitmap) - inc; i < lengthof(desc.receive_block_bitmap) - 1; i := i+1) { |
| 499 | desc.receive_block_bitmap[i] := int2bit(0, 1); |
| 500 | } |
| 501 | /* Now we can set current bit and update SSN */ |
| 502 | desc.starting_seq_nr := bsn + 1; |
| 503 | desc.receive_block_bitmap[lengthof(desc.receive_block_bitmap) - 1] := int2bit(1, 1); |
| 504 | |
| 505 | /* Finally update the final_ack bit as requested: */ |
| 506 | desc.final_ack := final_ack; |
| 507 | } |
| 508 | |
| 509 | /* This function can be used to send DATA.cnf in response to the IUT originated DATA.req. |
| 510 | * NOTE: it's the responsibility of caller to make sure that pcu_msg contains u.data_req. */ |
| 511 | function f_pcuif_tx_data_cnf(in PCUIF_Message pcu_msg) |
| 512 | runs on MS_BTS_IFACE_CT { |
| 513 | var PCUIF_Message pcu_msg_cnf := { |
| 514 | msg_type := PCU_IF_MSG_DATA_CNF, |
| 515 | bts_nr := pcu_msg.bts_nr, |
| 516 | spare := pcu_msg.spare, |
| 517 | u := { data_cnf := pcu_msg.u.data_req } |
| 518 | }; |
| 519 | |
| 520 | /* PCU wants DATA.cnf containing basically everything that was in DATA.req, |
| 521 | * but PCU_IF_SAPI_PCH is a special case - paging group shall be excluded. */ |
| 522 | if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { |
| 523 | pcu_msg_cnf.u.data_cnf.data := substr(pcu_msg.u.data_req.data, 3, |
| 524 | pcu_msg.u.data_req.len - 3); |
| 525 | } |
| 526 | |
| 527 | BTS.send(pcu_msg_cnf); |
| 528 | } |
| 529 | |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 530 | //////////////////////// |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 531 | // Low level APIs |
Pau Espin Pedrol | 4f7b8fd | 2020-05-18 18:28:17 +0200 | [diff] [blame] | 532 | //////////////////////// |
| 533 | |
Vadim Yanitskiy | 7466c33 | 2020-05-28 20:41:19 +0700 | [diff] [blame] | 534 | 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] | 535 | template GsmRrMessage t_imm_ass := ?, |
| 536 | template (present) TsTrxBtsNum nr := tr_TsTrxBtsNum) |
Vadim Yanitskiy | 7466c33 | 2020-05-28 20:41:19 +0700 | [diff] [blame] | 537 | runs on MS_BTS_IFACE_CT return GsmRrMessage { |
| 538 | var GsmRrMessage rr_imm_ass; |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 539 | var PCUIF_Message pcu_msg; |
| 540 | var octetstring data; |
| 541 | timer T; |
| 542 | |
| 543 | T.start(2.0); |
| 544 | alt { |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 545 | [] 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] | 546 | sapi := sapi, data := ?)) -> value pcu_msg { |
| 547 | /* On PCH the payload is prefixed with paging group (3 octets): skip it. |
| 548 | * TODO: add an additional template parameter, so we can match it. */ |
| 549 | if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { |
| 550 | data := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); |
| 551 | } else { |
| 552 | data := pcu_msg.u.data_req.data; |
| 553 | } |
| 554 | |
| 555 | rr_imm_ass := dec_GsmRrMessage(data); |
| 556 | if (not match(rr_imm_ass, t_imm_ass)) { |
| 557 | /* Not for us? Wait for more. */ |
| 558 | repeat; |
| 559 | } |
| 560 | |
| 561 | log("Rx Immediate Assignment: ", rr_imm_ass); |
Pau Espin Pedrol | 34c940b | 2020-05-28 19:56:11 +0700 | [diff] [blame] | 562 | |
| 563 | /* Send DATA.cnf back to the IUT (only needed for PCH) */ |
| 564 | if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { |
| 565 | f_pcuif_tx_data_cnf(pcu_msg); |
| 566 | } |
| 567 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 568 | setverdict(pass); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 569 | } |
| 570 | [] BTS.receive { repeat; } |
| 571 | [] T.timeout { |
| 572 | setverdict(fail, "Timeout waiting for Immediate Assignment"); |
Pau Espin Pedrol | fddc20b | 2020-05-28 19:50:29 +0700 | [diff] [blame] | 573 | f_shutdown(__BFILE__, __LINE__); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 574 | } |
| 575 | } |
| 576 | |
Vadim Yanitskiy | 7466c33 | 2020-05-28 20:41:19 +0700 | [diff] [blame] | 577 | return rr_imm_ass; |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | /* One phase packet access (see 3GPP TS 44.018, table 9.1.8.1) */ |
| 581 | const BIT8 chan_req_def := '01111000'B; |
| 582 | |
| 583 | /* Establish an Uplink TBF by sending RACH.ind towards the PCU */ |
Vadim Yanitskiy | 28d18e1 | 2020-05-29 15:25:59 +0700 | [diff] [blame] | 584 | function f_pcuif_tx_rach_rx_imm_ass(uint16_t ra := bit2int(chan_req_def), |
| 585 | uint8_t is_11bit := 0, |
| 586 | PCUIF_BurstType burst_type := BURST_TYPE_0, |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 587 | TimingAdvance ta := 0, |
| 588 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Vadim Yanitskiy | 7466c33 | 2020-05-28 20:41:19 +0700 | [diff] [blame] | 589 | runs on MS_BTS_IFACE_CT return GsmRrMessage { |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 590 | var uint32_t fn; |
| 591 | |
| 592 | /* FIXME: ask the BTS component to give us the current TDMA fn */ |
| 593 | fn := 1337 + ta; |
| 594 | |
| 595 | /* Send RACH.ind */ |
| 596 | log("Sending RACH.ind on fn=", fn, " with RA=", ra, ", TA=", ta); |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 597 | 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] | 598 | ra := ra, is_11bit := is_11bit, |
| 599 | burst_type := burst_type, |
| 600 | fn := fn, arfcn := 871, |
| 601 | qta := ta * 4)); |
| 602 | |
| 603 | /* 3GPP TS 44.018, table 9.1.8.1, note 2b: Request Reference shall be set to 127 |
| 604 | * when Immediate Assignment is triggered by EGPRS Packet Channel Request. Here |
| 605 | * we assume that 11 bit RA always contains EGPRS Packet Channel Request. */ |
| 606 | if (is_11bit != 0) { ra := 127; } |
| 607 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 608 | /* Expect Immediate (TBF) Assignment on the same TS/TRX/BTS */ |
| 609 | 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] | 610 | } |
| 611 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 612 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 613 | function f_pcuif_tx_data_ind(octetstring data, int16_t lqual_cb := 0, uint32_t fn := 0, |
| 614 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 615 | runs on MS_BTS_IFACE_CT { |
| 616 | var template RAW_PCU_EventParam ev_param := {tdma_fn := ? }; |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 617 | 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] | 618 | sapi := PCU_IF_SAPI_PDTCH, data := data, |
| 619 | fn := fn, arfcn := 871, lqual_cb := lqual_cb)); |
| 620 | if (fn != 0) { |
| 621 | ev_param := {tdma_fn := fn }; |
| 622 | } |
| 623 | BTS.receive(tr_RAW_PCU_EV(TDMA_EV_PDTCH_BLOCK_SENT, ev_param)); |
| 624 | } |
| 625 | |
| 626 | /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 627 | function f_pcuif_rx_data_req(out PCUIF_Message pcu_msg, |
| 628 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 629 | runs on MS_BTS_IFACE_CT { |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 630 | 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] | 631 | sapi := PCU_IF_SAPI_PDTCH, fn := 0, |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 632 | arfcn := 871, block_nr := nr.blk_nr)); |
| 633 | 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] | 634 | sapi := PCU_IF_SAPI_PDTCH)) -> value pcu_msg; |
| 635 | } |
| 636 | |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 637 | /* Expect a Paging Request Type 1 from PCU on PCUIF on specified sapi. */ |
| 638 | function f_pcuif_rx_pch_pag_req1(template MobileIdentityV mi1 := ?, |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 639 | template integer pag_group := ?, |
| 640 | template (present) TsTrxBtsNum nr := tr_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 641 | runs on MS_BTS_IFACE_CT return GsmRrMessage { |
| 642 | var GsmRrMessage rr_pag_req1; |
| 643 | var PCUIF_Message pcu_msg; |
| 644 | var octetstring imsi_suff_octstr; |
| 645 | var integer pag_group_rx; |
| 646 | var octetstring macblock; |
| 647 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 648 | 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] | 649 | sapi := PCU_IF_SAPI_PCH)) -> value pcu_msg; |
| 650 | |
| 651 | /* First 3 bytes contain IMSI suffix to calculate paging group: */ |
| 652 | imsi_suff_octstr := substr(pcu_msg.u.data_req.data, 0, 3); |
| 653 | pag_group_rx := str2int(oct2char(imsi_suff_octstr[0])) * 100 + |
| 654 | str2int(oct2char(imsi_suff_octstr[1])) * 10 + |
| 655 | str2int(oct2char(imsi_suff_octstr[2])); |
| 656 | |
| 657 | /* Make sure we've got RR Paging Request Type 1 for a given MI */ |
| 658 | macblock := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); |
| 659 | rr_pag_req1 := dec_GsmRrMessage(macblock); |
| 660 | if (not match(rr_pag_req1, tr_PAG_REQ1(tr_MI_LV(mi1)))) { |
| 661 | setverdict(fail, "Failed to match Paging Request Type 1: ", rr_pag_req1); |
| 662 | f_shutdown(__BFILE__, __LINE__); |
| 663 | } |
| 664 | |
| 665 | /* Make sure that received paging froup matches the expected one */ |
| 666 | if (not match(pag_group_rx, pag_group)) { |
| 667 | setverdict(fail, "Paging group", pag_group_rx, " does not match expected ", pag_group); |
| 668 | f_shutdown(__BFILE__, __LINE__); |
| 669 | } |
| 670 | |
| 671 | f_pcuif_tx_data_cnf(pcu_msg); |
| 672 | return rr_pag_req1; |
| 673 | } |
| 674 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 675 | function f_rx_rlcmac_dl_block(out RlcmacDlBlock dl_block, out uint32_t dl_fn, |
| 676 | template (present) CodingScheme exp_cs_mcs := ?, |
| 677 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 678 | runs on MS_BTS_IFACE_CT { |
| 679 | var PCUIF_Message pcu_msg; |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 680 | f_pcuif_rx_data_req(pcu_msg, nr := nr); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 681 | dl_block := dec_RlcmacDlBlock(pcu_msg.u.data_req.data); |
| 682 | dl_fn := pcu_msg.u.data_req.fn; |
| 683 | |
| 684 | var integer len := lengthof(pcu_msg.u.data_req.data); |
| 685 | var CodingScheme cs_mcs := f_rlcmac_block_len2cs_mcs(len) |
| 686 | if (not match(f_rlcmac_block_len2cs_mcs(len), exp_cs_mcs)) { |
| 687 | setverdict(fail, "Failed to match Coding Scheme exp ", exp_cs_mcs, " vs ", cs_mcs, " (", len, ")"); |
| 688 | f_shutdown(__BFILE__, __LINE__); |
| 689 | } |
| 690 | } |
| 691 | |
Pau Espin Pedrol | cdbe903 | 2020-07-07 20:20:42 +0200 | [diff] [blame] | 692 | function f_rx_rlcmac_dl_block_exp_ack_nack(out RlcmacDlBlock dl_block, out uint32_t poll_fn, |
| 693 | template RlcmacDlBlock acknack_tmpl := (tr_RLCMAC_UL_ACK_NACK_GPRS(ul_tfi := ?), |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 694 | tr_RLCMAC_UL_ACK_NACK_EGPRS(ul_tfi := ?)), |
| 695 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 696 | runs on MS_BTS_IFACE_CT { |
| 697 | var uint32_t dl_fn; |
| 698 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 699 | f_rx_rlcmac_dl_block(dl_block, dl_fn, nr := nr); |
Pau Espin Pedrol | cdbe903 | 2020-07-07 20:20:42 +0200 | [diff] [blame] | 700 | if (match(dl_block, acknack_tmpl)) { |
Pau Espin Pedrol | 692222c | 2020-05-17 00:25:37 +0200 | [diff] [blame] | 701 | poll_fn := f_rrbp_ack_fn(dl_fn, dl_block.ctrl.mac_hdr.rrbp); |
| 702 | return; |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 703 | } |
Pau Espin Pedrol | 692222c | 2020-05-17 00:25:37 +0200 | [diff] [blame] | 704 | setverdict(fail, "Failed to match Packet Uplink ACK / NACK:", dl_block); |
| 705 | f_shutdown(__BFILE__, __LINE__); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 706 | } |
| 707 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 708 | function f_rx_rlcmac_dl_block_exp_dummy(out RlcmacDlBlock dl_block, |
| 709 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 710 | runs on MS_BTS_IFACE_CT { |
| 711 | var uint32_t dl_fn; |
| 712 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 713 | f_rx_rlcmac_dl_block(dl_block, dl_fn, nr := nr); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 714 | if (not match(dl_block, tr_RLCMAC_DUMMY_CTRL())) { |
| 715 | setverdict(fail, "Failed to match Packet DUMMY DL"); |
| 716 | f_shutdown(__BFILE__, __LINE__); |
| 717 | } |
| 718 | } |
| 719 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 720 | function f_rx_rlcmac_dl_block_exp_pkt_pag_req(out RlcmacDlBlock dl_block, |
| 721 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 722 | runs on MS_BTS_IFACE_CT { |
| 723 | var uint32_t dl_fn; |
| 724 | |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 725 | f_rx_rlcmac_dl_block(dl_block, dl_fn, nr := nr); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 726 | if (not match(dl_block, tr_RLCMAC_PACKET_PAG_REQ())) { |
| 727 | setverdict(fail, "Failed to match Packet Paging Request: ", dl_block, " vs ", tr_RLCMAC_PACKET_PAG_REQ()); |
| 728 | f_shutdown(__BFILE__, __LINE__); |
| 729 | } |
| 730 | } |
| 731 | |
| 732 | /* This function does what could probably be done with templates */ |
| 733 | function f_rlcmac_dl_block_verify_data_gprs(in RlcmacDlDataBlock data_block, |
| 734 | template (present) octetstring data := ?, |
| 735 | template (present) uint7_t exp_bsn := ?, |
| 736 | template (present) CodingScheme exp_cs := ?) |
| 737 | runs on MS_BTS_IFACE_CT { |
| 738 | if (not match(data_block.mac_hdr.hdr_ext.bsn, exp_bsn)) { |
| 739 | setverdict(fail, "DL block BSN doesn't match: ", |
| 740 | data_block.mac_hdr.hdr_ext.bsn, " vs exp ", exp_bsn); |
| 741 | } |
| 742 | |
| 743 | if (lengthof(data_block.blocks) < 1) { |
| 744 | setverdict(fail, "DL block has no LLC payload: ", data_block); |
| 745 | f_shutdown(__BFILE__, __LINE__); |
| 746 | } |
| 747 | |
| 748 | if (not match(data_block.blocks[0].payload, data)) { |
| 749 | setverdict(fail, "Failed to match content of LLC payload in DL Block: ", |
| 750 | data_block.blocks[0].payload, " vs ", data); |
| 751 | f_shutdown(__BFILE__, __LINE__); |
| 752 | } |
| 753 | |
| 754 | /* Check next data blocks contain dummy frames */ |
| 755 | if (lengthof(data_block.blocks) > 1 and substr(data_block.blocks[1].payload, 0, 3) != '43C001'O) { |
| 756 | setverdict(fail, "Second data payload is not a dummy frame: ", |
| 757 | data_block.blocks[1].payload); |
| 758 | f_shutdown(__BFILE__, __LINE__); |
| 759 | } |
| 760 | |
| 761 | /* TODO: check exp_cs */ |
| 762 | } |
| 763 | |
| 764 | /* This function does what could probably be done with templates */ |
| 765 | function f_rlcmac_dl_block_verify_data_egprs(in RlcmacDlEgprsDataBlock data_block, |
| 766 | template (present) octetstring data := ?, |
| 767 | template (present) uint14_t exp_bsn := ?, |
| 768 | template (present) CodingScheme exp_cs := ?) |
| 769 | runs on MS_BTS_IFACE_CT { |
| 770 | if (not match(data_block.mac_hdr.bsn1, exp_bsn)) { |
| 771 | setverdict(fail, "DL block BSN doesn't match: ", |
| 772 | data_block.mac_hdr.bsn1, " vs exp ", exp_bsn); |
| 773 | } |
| 774 | |
| 775 | if (lengthof(data_block.blocks) < 1) { |
| 776 | setverdict(fail, "DL block has no LLC payload: ", data_block); |
| 777 | f_shutdown(__BFILE__, __LINE__); |
| 778 | } |
| 779 | |
| 780 | if (not match(data_block.blocks[0].payload, data)) { |
| 781 | setverdict(fail, "Failed to match content of LLC payload in DL Block: ", |
| 782 | data_block.blocks[0].payload, " vs ", data); |
| 783 | f_shutdown(__BFILE__, __LINE__); |
| 784 | } |
| 785 | |
| 786 | /* Check next data blocks contain dummy frames */ |
| 787 | if (lengthof(data_block.blocks) > 1 and substr(data_block.blocks[1].payload, 0, 3) != '43C001'O) { |
| 788 | setverdict(fail, "Second data payload is not a dummy frame: ", |
| 789 | data_block.blocks[1].payload); |
| 790 | f_shutdown(__BFILE__, __LINE__); |
| 791 | } |
| 792 | |
| 793 | /* 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. |
| 794 | See wireshark's egprs_Header_type1_coding_puncturing_scheme_to_mcs. */ |
| 795 | } |
| 796 | |
| 797 | /* High level (task specific) helper for receiving and matching GPRS/EGPRS data blocks */ |
| 798 | function f_rx_rlcmac_dl_block_exp_data(out RlcmacDlBlock dl_block, out uint32_t dl_fn, |
| 799 | template (present) octetstring data := ?, |
| 800 | template (present) uint7_t exp_bsn := ?, |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 801 | template (present) CodingScheme exp_cs := ?, |
| 802 | template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum) |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 803 | runs on MS_BTS_IFACE_CT { |
| 804 | /* FIXME: ideally we should use an alt statement with timeout here, rather than |
| 805 | * having +100500 layers of abstraction. This would facilitate developing the |
| 806 | * multi-TBF/-TRX/-BTS tests, where you cannot expect that the first received |
| 807 | * block is exactly what you need. */ |
Vadim Yanitskiy | 4b7473d | 2020-09-21 04:15:39 +0700 | [diff] [blame] | 808 | f_rx_rlcmac_dl_block(dl_block, dl_fn, nr := nr); |
Pau Espin Pedrol | aedc511 | 2020-05-16 17:30:42 +0200 | [diff] [blame] | 809 | |
| 810 | /* Make sure it's either GPRS or EGPRS data block */ |
| 811 | if (not match(dl_block, tr_RLCMAC_DATA)) { |
| 812 | setverdict(fail, "Failed to match DL DATA: ", dl_block, " vs ", tr_RLCMAC_DATA); |
| 813 | f_shutdown(__BFILE__, __LINE__); |
| 814 | } |
| 815 | |
| 816 | if (ischosen(dl_block.data_egprs)) { |
| 817 | f_rlcmac_dl_block_verify_data_egprs(dl_block.data_egprs, data, exp_bsn, exp_cs); |
| 818 | } else if (ischosen(dl_block.data)) { |
| 819 | f_rlcmac_dl_block_verify_data_gprs(dl_block.data, data, exp_bsn, exp_cs); |
| 820 | } else { |
| 821 | /* Should not happen, but the caller may theoretically give us a template for CTRL */ |
| 822 | setverdict(fail, "DL block is neither GPRS nor EGPRS data block: ", dl_block); |
| 823 | f_shutdown(__BFILE__, __LINE__); |
| 824 | } |
| 825 | } |
| 826 | |
| 827 | function f_dl_block_ack_fn(in RlcmacDlBlock dl_block, uint32_t dl_fn) |
| 828 | runs on MS_BTS_IFACE_CT return uint32_t { |
| 829 | var boolean rrbp_valid; |
| 830 | var MacRrbp rrbp; |
| 831 | |
| 832 | /* The argument must be either a GPRS or EGPRS data block */ |
| 833 | if (ischosen(dl_block.data_egprs)) { |
| 834 | rrbp_valid := true; /* always valid */ |
| 835 | rrbp := dl_block.data_egprs.mac_hdr.rrbp; |
| 836 | } else if (ischosen(dl_block.data)) { |
| 837 | rrbp_valid := dl_block.data.mac_hdr.mac_hdr.rrbp_valid; |
| 838 | rrbp := dl_block.data.mac_hdr.mac_hdr.rrbp; |
| 839 | } else { |
| 840 | rrbp_valid := dl_block.ctrl.mac_hdr.rrbp_valid; |
| 841 | rrbp := dl_block.ctrl.mac_hdr.rrbp; |
| 842 | } |
| 843 | |
| 844 | /* Make sure that the given block really needs to be ACKnowledged */ |
| 845 | if (not rrbp_valid) { |
| 846 | setverdict(fail, "DL block shall not be ACKnowledged, field RRBP is not valid"); |
| 847 | f_shutdown(__BFILE__, __LINE__); |
| 848 | } |
| 849 | |
| 850 | return f_rrbp_ack_fn(dl_fn, rrbp); |
| 851 | } |
| 852 | |
| 853 | function f_pkt_paging_match_tmsi(in PacketPagingReq req, template GsmTmsi tmsi) |
| 854 | runs on MS_BTS_IFACE_CT { |
| 855 | if (not match(req.repeated_pageinfo.cs.tmsi, tmsi)) { |
| 856 | setverdict(fail, "Mobile Identity (TMSI/P-TMSI) mismatch: ", |
| 857 | "expected: ", tmsi, "got: ", req.repeated_pageinfo.cs.tmsi); |
| 858 | f_shutdown(__BFILE__, __LINE__); |
| 859 | } |
| 860 | } |
| 861 | |
| 862 | } |