Harald Welte | 34b5a95 | 2019-05-27 11:54:11 +0200 | [diff] [blame] | 1 | /* GPRS-NS Emulation in TTCN-3 |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 2 | * (C) 2018-2021 Harald Welte <laforge@gnumonks.org> |
Harald Welte | 34b5a95 | 2019-05-27 11:54:11 +0200 | [diff] [blame] | 3 | * contributions by sysmocom - s.f.m.c. GmbH |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Released under the terms of GNU General Public License, Version 2 or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 10 | */ |
| 11 | |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 12 | module NS_Emulation { |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 13 | import from Misc_Helpers all; |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 14 | import from NS_Types all; |
| 15 | import from BSSGP_Types all; |
Harald Welte | 867243a | 2020-09-13 18:32:32 +0200 | [diff] [blame] | 16 | import from Osmocom_Types all; |
Harald Welte | e0abc47 | 2018-02-05 09:13:31 +0100 | [diff] [blame] | 17 | import from Osmocom_Gb_Types all; |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 18 | import from NS_Provider_IPL4 all; |
Harald Welte | 867243a | 2020-09-13 18:32:32 +0200 | [diff] [blame] | 19 | #ifdef NS_EMULATION_FR |
| 20 | import from NS_Provider_FR all; |
| 21 | #endif |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 22 | import from IPL4asp_Types all; |
| 23 | |
| 24 | type record NsUnitdataRequest { |
| 25 | BssgpBvci bvci, |
| 26 | Nsei nsei, |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 27 | integer lsp, |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 28 | octetstring sdu optional, |
Harald Welte | e0abc47 | 2018-02-05 09:13:31 +0100 | [diff] [blame] | 29 | PDU_BSSGP bssgp optional |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 30 | } |
| 31 | |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 32 | template NsUnitdataRequest tr_NsUdReq(template Nsei nsei, template BssgpBvci bvci, template integer lsp, |
| 33 | template octetstring sdu, template PDU_BSSGP bssgp) := { |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 34 | bvci := bvci, |
| 35 | nsei := nsei, |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 36 | lsp := lsp, |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 37 | sdu := sdu, |
| 38 | bssgp := bssgp |
| 39 | } |
| 40 | |
| 41 | template (value) NsUnitdataRequest ts_NsUdReq(template (value) Nsei nsei, |
| 42 | template (value) BssgpBvci bvci, |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 43 | template (value) integer lsp, |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 44 | template (omit) octetstring sdu, |
| 45 | template (omit) PDU_BSSGP bssgp) := { |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 46 | bvci := bvci, |
| 47 | nsei := nsei, |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 48 | lsp := lsp, |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 49 | sdu := sdu, |
| 50 | bssgp := bssgp |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 51 | } |
| 52 | |
| 53 | type record NsUnitdataIndication { |
| 54 | BssgpBvci bvci, |
| 55 | Nsei nsei, |
Harald Welte | 80a249a | 2020-11-17 19:57:40 +0100 | [diff] [blame] | 56 | Nsvci nsvci, |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 57 | octetstring sdu optional, |
Harald Welte | e0abc47 | 2018-02-05 09:13:31 +0100 | [diff] [blame] | 58 | PDU_BSSGP bssgp optional |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 59 | } |
| 60 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 61 | template (present) NsUnitdataIndication tr_NsUdInd(template (present) Nsei nsei, |
| 62 | template (present) BssgpBvci bvci, |
| 63 | template octetstring sdu) := { |
| 64 | bvci := bvci, |
| 65 | nsei := nsei, |
Harald Welte | 80a249a | 2020-11-17 19:57:40 +0100 | [diff] [blame] | 66 | nsvci := ?, |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 67 | sdu := sdu, |
| 68 | bssgp := ? |
| 69 | } |
| 70 | |
Harald Welte | 80a249a | 2020-11-17 19:57:40 +0100 | [diff] [blame] | 71 | template (value) NsUnitdataIndication ts_NsUdInd(Nsei nsei, Nsvci nsvci, BssgpBvci bvci, octetstring sdu) := { |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 72 | bvci := bvci, |
| 73 | nsei := nsei, |
Harald Welte | 80a249a | 2020-11-17 19:57:40 +0100 | [diff] [blame] | 74 | nsvci := nsvci, |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 75 | sdu := sdu, |
Harald Welte | e0abc47 | 2018-02-05 09:13:31 +0100 | [diff] [blame] | 76 | bssgp := dec_PDU_BSSGP(sdu) |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | type record NsStatusIndication { |
| 80 | Nsei nsei, |
| 81 | Nsvci nsvci, |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 82 | NsvcState old_state, |
Harald Welte | dc0a090 | 2020-11-10 21:03:29 +0100 | [diff] [blame] | 83 | NsvcState new_state, |
| 84 | boolean first_or_last |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 85 | } |
| 86 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 87 | template (present) NsStatusIndication tr_NsStsInd(template (present) Nsei nsei := ?, |
| 88 | template (present) Nsvci nsvci := ?, |
| 89 | template (present) NsvcState old_state := ?, |
Harald Welte | dc0a090 | 2020-11-10 21:03:29 +0100 | [diff] [blame] | 90 | template (present) NsvcState state := ?, |
| 91 | template (present) boolean first_or_last := ?) := { |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 92 | nsei := nsei, |
| 93 | nsvci := nsvci, |
| 94 | old_state := old_state, |
Harald Welte | dc0a090 | 2020-11-10 21:03:29 +0100 | [diff] [blame] | 95 | new_state := state, |
| 96 | first_or_last := first_or_last |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 97 | } |
| 98 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 99 | |
Harald Welte | dc0a090 | 2020-11-10 21:03:29 +0100 | [diff] [blame] | 100 | template (value) NsStatusIndication ts_NsStsInd(Nsei nsei, Nsvci nsvci, NsvcState old_state, NsvcState state, |
| 101 | boolean first_or_last := false) := { |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 102 | nsei := nsei, |
| 103 | nsvci := nsvci, |
| 104 | old_state := old_state, |
Harald Welte | dc0a090 | 2020-11-10 21:03:29 +0100 | [diff] [blame] | 105 | new_state := state, |
| 106 | first_or_last := first_or_last |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | type enumerated NsvcState { |
Harald Welte | 3f82089 | 2021-01-19 18:19:23 +0100 | [diff] [blame] | 110 | NSVC_S_DISABLED, /* administratively disabled */ |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 111 | NSVC_S_DEAD_BLOCKED, |
| 112 | NSVC_S_WAIT_RESET, |
| 113 | NSVC_S_ALIVE_BLOCKED, |
| 114 | NSVC_S_ALIVE_UNBLOCKED |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 115 | } |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 116 | |
| 117 | /* port from our (internal) point of view */ |
| 118 | type port NS_SP_PT message { |
| 119 | in NsUnitdataRequest; |
| 120 | out NsUnitdataIndication, |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 121 | NsStatusIndication; |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 122 | } with { extension "internal" }; |
| 123 | |
| 124 | /* port from the user point of view */ |
| 125 | type port NS_PT message { |
| 126 | in ASP_Event, |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 127 | NsStatusIndication, |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 128 | NsUnitdataIndication; |
| 129 | out NsUnitdataRequest; |
| 130 | } with { extension "internal" }; |
| 131 | |
Harald Welte | 3f82089 | 2021-01-19 18:19:23 +0100 | [diff] [blame] | 132 | /* port from our (internal) point of view */ |
| 133 | type port NS_CTRL_SP_PT message { |
| 134 | in NsDisableVcRequest, |
| 135 | NsEnableVcRequest; |
| 136 | } with { extension "internal" }; |
| 137 | |
| 138 | /* port from the user point of view */ |
| 139 | type port NS_CTRL_PT message { |
| 140 | out NsEnableVcRequest, |
| 141 | NsDisableVcRequest; |
| 142 | } with { extension "internal" }; |
| 143 | |
| 144 | type record NsDisableVcRequest { |
| 145 | Nsvci nsvci |
| 146 | }; |
| 147 | type record NsEnableVcRequest { |
| 148 | Nsvci nsvci |
| 149 | }; |
| 150 | |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 151 | type component NS_Provider_CT { |
| 152 | /* upper port, facing to NS_Emulation:NSCP */ |
| 153 | port NS_PROVIDER_PT NSE; |
| 154 | /* lower layer ports (UDP/IP, Frame Relay) are added in derived components */ |
| 155 | }; |
| 156 | |
Harald Welte | bd612cd | 2020-09-14 09:42:28 +0200 | [diff] [blame] | 157 | type enumerated NS_Provider_LinkStatus { |
| 158 | NS_PROV_LINK_STATUS_UP, |
| 159 | NS_PROV_LINK_STATUS_DOWN |
| 160 | }; |
| 161 | type union NS_Provider_Evt { |
| 162 | NS_Provider_LinkStatus link_status |
| 163 | }; |
| 164 | |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 165 | /* port between NS_Provider and NS_CT */ |
| 166 | type port NS_PROVIDER_PT message { |
Harald Welte | bd612cd | 2020-09-14 09:42:28 +0200 | [diff] [blame] | 167 | inout PDU_NS, NS_Provider_Evt; |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 168 | } with { extension "internal" }; |
| 169 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 170 | type record NSVCConfigurationIP { |
| 171 | AddressFamily address_family, |
| 172 | PortNumber local_udp_port, |
| 173 | charstring local_ip, |
| 174 | PortNumber remote_udp_port, |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 175 | charstring remote_ip, |
| 176 | uint8_t data_weight, |
| 177 | uint8_t signalling_weight |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 178 | }; |
| 179 | type record NSVCConfigurationFR { |
| 180 | charstring netdev, /* HDLC net-device for AF_PACKET socket */ |
| 181 | integer dlci |
| 182 | }; |
| 183 | type union NSVCConfigurationP { |
| 184 | NSVCConfigurationIP ip, |
| 185 | NSVCConfigurationFR fr |
| 186 | }; |
| 187 | type record NSVCConfiguration { |
| 188 | NSVCConfigurationP provider, |
| 189 | Nsvci nsvci |
| 190 | }; |
| 191 | type record of NSVCConfiguration NSVCConfigurations; |
| 192 | type record NSConfiguration { |
| 193 | Nsvci nsei, |
| 194 | boolean role_sgsn, |
| 195 | boolean handle_sns, |
| 196 | NSVCConfigurations nsvc |
| 197 | } |
| 198 | |
| 199 | /*********************************************************************** |
| 200 | * per NS-VCG component. Exists once per [peer of] NSE |
| 201 | ***********************************************************************/ |
| 202 | |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 203 | type component NS_CT { |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 204 | /* NS-User SAP towards the user */ |
| 205 | port NS_SP_PT NS_SP; |
| 206 | |
| 207 | /* port towards the per-NSVC components */ |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 208 | port NSint_PT NSVC; |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 209 | |
Harald Welte | 3f82089 | 2021-01-19 18:19:23 +0100 | [diff] [blame] | 210 | /* control port, used to manipulate at runtime */ |
| 211 | port NS_CTRL_SP_PT NS_CTRL; |
| 212 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 213 | /* all of the NS configuration a user passes to us */ |
| 214 | var NSConfiguration g_config; |
| 215 | var charstring g_id; |
| 216 | |
| 217 | /* references to the per-NSVC components */ |
| 218 | var NsvcTable g_nsvcs := {}; |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 219 | /* list of indexes to g_nsvcs[] of currently unblocked NSVCs */ |
Harald Welte | aaa0dfd | 2021-02-04 16:58:53 +0100 | [diff] [blame] | 220 | var Osmocom_Types.ro_integer g_unblocked_nsvcs_sig := {}; |
| 221 | var Osmocom_Types.ro_integer g_unblocked_nsvcs_data := {}; |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 222 | }; |
| 223 | type record NsvcTableEntry { |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 224 | NSVCConfiguration cfg, |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 225 | NSVC_CT vc_conn, |
| 226 | NsvcState state |
| 227 | }; |
| 228 | type record of NsvcTableEntry NsvcTable; |
| 229 | |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 230 | /* internal port from the NS-VC point of view */ |
| 231 | type port NSint_SP_PT message { |
| 232 | in NsUnitdataRequest, |
| 233 | SnsRequest, |
| 234 | NsCtrlRequest; |
| 235 | out NsUnitdataIndication, |
| 236 | SnsIndication, |
| 237 | NsStatusIndication; |
| 238 | } with { extension "internal" }; |
| 239 | |
| 240 | /* internal port from the NS-VCG point of view */ |
| 241 | type port NSint_PT message { |
| 242 | in ASP_Event, |
| 243 | NsStatusIndication, |
| 244 | SnsIndication, |
| 245 | NsUnitdataIndication; |
| 246 | out NsUnitdataRequest, |
| 247 | SnsRequest, |
| 248 | NsCtrlRequest; |
| 249 | } with { extension "internal" }; |
| 250 | |
| 251 | /* Used by NS-VC to report reception of a SNS PDU to NS-VCG */ |
| 252 | type record SnsIndication { |
| 253 | Nsvci nsvci, |
| 254 | PDU_NS ns |
| 255 | }; |
| 256 | |
| 257 | /* Used by NS-VCG to request transmission of a SNS PDU via a NS-VC */ |
| 258 | type record SnsRequest { |
| 259 | Nsvci nsvci, |
| 260 | PDU_NS ns |
| 261 | }; |
| 262 | |
| 263 | type enumerated NsCtrlRequest { |
Harald Welte | 3f82089 | 2021-01-19 18:19:23 +0100 | [diff] [blame] | 264 | StartAliveProcedure (0), |
| 265 | DisableReq (1), /* administratively disable NS-VC */ |
Harald Welte | c568000 | 2021-02-13 16:45:30 +0100 | [diff] [blame^] | 266 | EnableReq (2), /* administratively enable NS-VC */ |
| 267 | ForceAliveState (3) |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 268 | }; |
| 269 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 270 | /* add one NSVC (component and table entry */ |
| 271 | function f_nsvc_add(NSVCConfiguration nsvc_cfg) runs on NS_CT { |
| 272 | var charstring nsvc_id := g_id & "-NSVCI" & int2str(nsvc_cfg.nsvci); |
| 273 | var NsvcTableEntry te; |
| 274 | |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 275 | te.cfg := nsvc_cfg; |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 276 | te.vc_conn := NSVC_CT.create(nsvc_id); |
| 277 | te.state := NSVC_S_DEAD_BLOCKED; |
| 278 | |
| 279 | connect(self:NSVC, te.vc_conn:NS_SP); |
| 280 | te.vc_conn.start(NSVCStart(nsvc_cfg, g_config, nsvc_id)); |
| 281 | |
| 282 | g_nsvcs := g_nsvcs & { te }; |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 283 | /* no need to add to g_unblocked_nsvcs, as state is always DEAD_BLOCKED above */ |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | function f_nsvc_find_idx(Nsvci nsvci) runs on NS_CT return integer { |
| 287 | var integer i; |
| 288 | for (i := 0; i < lengthof(g_nsvcs); i := i+1) { |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 289 | if (g_nsvcs[i].cfg.nsvci == nsvci) { |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 290 | return i; |
| 291 | } |
| 292 | } |
| 293 | return -1; |
| 294 | } |
| 295 | |
| 296 | function f_nsvc_find(Nsvci nsvci) runs on NS_CT return NSVC_CT { |
| 297 | var integer i := f_nsvc_find_idx(nsvci); |
| 298 | if (i < 0) { |
| 299 | return null; |
| 300 | } else { |
| 301 | return g_nsvcs[i].vc_conn; |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | function f_nsvc_update_state(Nsvci nsvci, NsvcState state) runs on NS_CT { |
| 306 | var integer i := f_nsvc_find_idx(nsvci); |
| 307 | if (i < 0) { |
| 308 | return; |
| 309 | } |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 310 | if (g_nsvcs[i].state != NSVC_S_ALIVE_UNBLOCKED and state == NSVC_S_ALIVE_UNBLOCKED) { |
| 311 | /* add index to list of unblocked NSVCs */ |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 312 | if (not ischosen(g_nsvcs[i].cfg.provider.ip) or |
| 313 | g_nsvcs[i].cfg.provider.ip.signalling_weight > 0) { |
Harald Welte | daf8968 | 2021-02-04 17:06:20 +0100 | [diff] [blame] | 314 | ro_integer_add_unique(g_unblocked_nsvcs_sig, i); |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 315 | } |
| 316 | if (not ischosen(g_nsvcs[i].cfg.provider.ip) or |
| 317 | g_nsvcs[i].cfg.provider.ip.data_weight > 0) { |
Harald Welte | daf8968 | 2021-02-04 17:06:20 +0100 | [diff] [blame] | 318 | ro_integer_add_unique(g_unblocked_nsvcs_data, i); |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 319 | } |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 320 | } else if (g_nsvcs[i].state == NSVC_S_ALIVE_UNBLOCKED and state != NSVC_S_ALIVE_UNBLOCKED) { |
| 321 | /* remove index to list of unblocked NSVCs */ |
Harald Welte | daf8968 | 2021-02-04 17:06:20 +0100 | [diff] [blame] | 322 | ro_integer_del(g_unblocked_nsvcs_sig, i); |
| 323 | ro_integer_del(g_unblocked_nsvcs_data, i); |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 324 | } |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 325 | g_nsvcs[i].state := state; |
| 326 | } |
| 327 | |
| 328 | function NSStart(NSConfiguration init_config, charstring id := testcasename()) runs on NS_CT { |
| 329 | g_config := init_config; |
| 330 | g_id := id; |
| 331 | |
| 332 | /* iterate over list of NS-VCs and start per-NSVC components */ |
| 333 | for (var integer i := 0; i < lengthof(g_config.nsvc); i := i+1) { |
| 334 | var NSVCConfiguration nsvc_cfg := g_config.nsvc[i]; |
| 335 | f_nsvc_add(nsvc_cfg); |
| 336 | } |
| 337 | |
| 338 | while (true) { |
| 339 | alt { |
| 340 | [] as_ns_common() {} |
| 341 | } |
| 342 | } |
| 343 | } |
| 344 | |
Harald Welte | dc0a090 | 2020-11-10 21:03:29 +0100 | [diff] [blame] | 345 | function f_count_nsvcs_in_state(template NsvcState state := ?) runs on NS_CT return integer { |
| 346 | var integer i; |
| 347 | var integer res := 0; |
| 348 | for (i := 0; i < lengthof(g_nsvcs); i := i+1) { |
| 349 | if (match(g_nsvcs[i].state, state)) { |
| 350 | res := res + 1; |
| 351 | } |
| 352 | } |
| 353 | return res; |
| 354 | } |
| 355 | |
Harald Welte | 516c5c7 | 2021-02-13 16:43:58 +0100 | [diff] [blame] | 356 | private altstep as_ns_common_status() runs on NS_CT { |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 357 | var NsStatusIndication rx_nssi; |
Harald Welte | dc0a090 | 2020-11-10 21:03:29 +0100 | [diff] [blame] | 358 | [] NSVC.receive(tr_NsStsInd(g_config.nsei, ?, ?, NSVC_S_ALIVE_UNBLOCKED)) -> value rx_nssi { |
| 359 | /* check if this one is the first to be unblocked */ |
| 360 | var integer num_nsvc_unblocked := f_count_nsvcs_in_state(NSVC_S_ALIVE_UNBLOCKED); |
| 361 | f_nsvc_update_state(rx_nssi.nsvci, rx_nssi.new_state); |
| 362 | if (num_nsvc_unblocked == 0) { |
| 363 | rx_nssi.first_or_last := true; |
| 364 | } |
| 365 | NS_SP.send(rx_nssi); |
| 366 | } |
| 367 | [] NSVC.receive(tr_NsStsInd(g_config.nsei, ?, ?, NSVC_S_DEAD_BLOCKED)) -> value rx_nssi { |
| 368 | f_nsvc_update_state(rx_nssi.nsvci, rx_nssi.new_state); |
| 369 | /* check if this one is the last to be blocked */ |
| 370 | var integer num_nsvc_unblocked := f_count_nsvcs_in_state(NSVC_S_ALIVE_UNBLOCKED); |
| 371 | if (num_nsvc_unblocked == 0) { |
| 372 | rx_nssi.first_or_last := true; |
| 373 | } |
| 374 | NS_SP.send(rx_nssi); |
| 375 | } |
| 376 | [] NSVC.receive(tr_NsStsInd(g_config.nsei, ?, ?, ?)) -> value rx_nssi { |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 377 | f_nsvc_update_state(rx_nssi.nsvci, rx_nssi.new_state); |
| 378 | NS_SP.send(rx_nssi); |
| 379 | } |
| 380 | [] NSVC.receive(tr_NsStsInd) -> value rx_nssi { |
| 381 | Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, |
| 382 | log2str("Received NsStatusInd for invalid NSEI: ", rx_nssi)); |
| 383 | } |
Harald Welte | 516c5c7 | 2021-02-13 16:43:58 +0100 | [diff] [blame] | 384 | } |
| 385 | |
| 386 | private altstep as_ns_common() runs on NS_CT { |
| 387 | var NsUnitdataIndication rx_nsudi; |
| 388 | var NsUnitdataRequest rx_nsudr; |
| 389 | var NsDisableVcRequest rx_disar; |
| 390 | var NsEnableVcRequest rx_enar; |
| 391 | /* pass from NS-VCs up to user */ |
| 392 | [] as_ns_common_status(); |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 393 | [] NSVC.receive(tr_NsUdInd(g_config.nsei, ?, ?)) -> value rx_nsudi { |
| 394 | NS_SP.send(rx_nsudi); |
| 395 | } |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 396 | |
| 397 | [g_config.handle_sns and g_config.role_sgsn] as_vcg_sns_sgsn(); |
| 398 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 399 | [] NSVC.receive(tr_NsUdInd(?, ?, ?)) -> value rx_nsudi { |
| 400 | Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, |
| 401 | log2str("Received UnitDataInd for invalid NSEI: ", rx_nsudi)); |
| 402 | } |
| 403 | /* from user down to NS-VC */ |
Harald Welte | 3f82089 | 2021-01-19 18:19:23 +0100 | [diff] [blame] | 404 | [] NS_CTRL.receive(NsDisableVcRequest:?) -> value rx_disar { |
| 405 | var integer nsvc_idx := f_nsvc_find_idx(rx_disar.nsvci); |
| 406 | NSVC.send(NsCtrlRequest:DisableReq) to g_nsvcs[nsvc_idx].vc_conn; |
| 407 | } |
| 408 | [] NS_CTRL.receive(NsEnableVcRequest:?) -> value rx_enar { |
| 409 | var integer nsvc_idx := f_nsvc_find_idx(rx_enar.nsvci); |
| 410 | NSVC.send(NsCtrlRequest:EnableReq) to g_nsvcs[nsvc_idx].vc_conn; |
| 411 | } |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 412 | [] NS_SP.receive(tr_NsUdReq(g_config.nsei, 0, ?, ?, *)) -> value rx_nsudr { |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 413 | /* load distribution function */ |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 414 | var integer nsvc_idx := g_unblocked_nsvcs_sig[rx_nsudr.lsp mod lengthof(g_unblocked_nsvcs_sig)]; |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 415 | NSVC.send(rx_nsudr) to g_nsvcs[nsvc_idx].vc_conn; |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 416 | } |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 417 | [] NS_SP.receive(tr_NsUdReq(g_config.nsei, ?, ?, ?, *)) -> value rx_nsudr { |
| 418 | /* load distribution function */ |
| 419 | var integer nsvc_idx := g_unblocked_nsvcs_data[rx_nsudr.lsp mod lengthof(g_unblocked_nsvcs_data)]; |
| 420 | NSVC.send(rx_nsudr) to g_nsvcs[nsvc_idx].vc_conn; |
| 421 | } |
| 422 | |
Harald Welte | c450552 | 2020-11-11 18:55:09 +0100 | [diff] [blame] | 423 | [] NS_SP.receive(tr_NsUdReq(?, ?, ?, ?, *)) -> value rx_nsudr { |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 424 | Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, |
| 425 | log2str("Received NsUnitdataReq for invalid NSEI: ", rx_nsudr)); |
| 426 | } |
| 427 | } |
| 428 | |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 429 | /* generate a list of v4 + v6 endpoints based on the NSVConfigurations. This is not strictly |
| 430 | * accurate, as we should create a list of _endpoints_, while we actually create a list of |
| 431 | * NSVCs. Those are only identical as long as our peer only implements one endpoint */ |
| 432 | private function gen_sns_ip_elems(out template (omit) IP4_Elements v4_out, |
| 433 | out template (omit) IP6_Elements v6_out) runs on NS_CT { |
| 434 | var integer i; |
| 435 | var IP4_Elements v4 := {}; |
| 436 | var IP6_Elements v6 := {}; |
| 437 | |
| 438 | for (i := 0; i < lengthof(g_config.nsvc); i := i + 1) { |
| 439 | var NSVCConfiguration nsvc_cfg := g_config.nsvc[i]; |
| 440 | if (not ischosen(nsvc_cfg.provider.ip)) { |
| 441 | continue; |
| 442 | } |
| 443 | if (nsvc_cfg.provider.ip.address_family == AF_INET) { |
| 444 | v4 := v4 & { valueof(ts_SNS_IPv4(nsvc_cfg.provider.ip.local_ip, |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 445 | nsvc_cfg.provider.ip.local_udp_port, |
| 446 | nsvc_cfg.provider.ip.signalling_weight, |
| 447 | nsvc_cfg.provider.ip.data_weight)) }; |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 448 | } else if (nsvc_cfg.provider.ip.address_family == AF_INET6) { |
| 449 | v6 := v6 & { valueof(ts_SNS_IPv6(nsvc_cfg.provider.ip.local_ip, |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 450 | nsvc_cfg.provider.ip.local_udp_port, |
| 451 | nsvc_cfg.provider.ip.signalling_weight, |
| 452 | nsvc_cfg.provider.ip.data_weight)) }; |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 453 | } |
| 454 | } |
| 455 | |
| 456 | /* we must not return empty lists, but 'omit' as otherwise we get wrong SNS IEs */ |
| 457 | if (lengthof(v4) == 0) { |
| 458 | v4_out := omit; |
| 459 | } else { |
| 460 | v4_out := v4; |
| 461 | } |
| 462 | if (lengthof(v6) == 0) { |
| 463 | v6_out := omit; |
| 464 | } else { |
| 465 | v6_out := v6; |
| 466 | } |
| 467 | } |
| 468 | |
Harald Welte | 3bd182f | 2021-02-13 16:43:22 +0100 | [diff] [blame] | 469 | private function f_broadcast_ns_ctrl(template (value) NsCtrlRequest req) runs on NS_CT { |
| 470 | for (var integer i := 0; i < lengthof(g_nsvcs); i := i+1) { |
| 471 | NSVC.send(req) to g_nsvcs[i].vc_conn; |
| 472 | } |
| 473 | } |
| 474 | |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 475 | /* simple IP Sub-Network Service responder for the SGSN side. This is not a full implementation |
| 476 | * of the protocol, merely sufficient to make the PCU/BSS side happy to proceed */ |
| 477 | private altstep as_vcg_sns_sgsn() runs on NS_CT { |
| 478 | var SnsIndication sind; |
| 479 | var NSVC_CT vc; |
| 480 | [] NSVC.receive(SnsIndication:{?, tr_SNS_SIZE(g_config.nsei)}) -> value sind sender vc { |
| 481 | /* blindly acknowledge whatever the PCU sends */ |
| 482 | NSVC.send(SnsRequest:{sind.nsvci, ts_SNS_SIZE_ACK(g_config.nsei, omit)}) to vc; |
| 483 | } |
| 484 | /* FIXME: We assume our peer has only one endpoint */ |
| 485 | [] NSVC.receive(SnsIndication:{?, tr_SNS_CONFIG(g_config.nsei, true, |
| 486 | {tr_SNS_IPv4(g_config.nsvc[0].provider.ip.remote_ip, |
| 487 | g_config.nsvc[0].provider.ip.remote_udp_port)})}) |
| 488 | -> value sind sender vc { |
| 489 | /* blindly acknowledge whatever the PCU sends */ |
| 490 | NSVC.send(SnsRequest:{sind.nsvci, ts_SNS_CONFIG_ACK(g_config.nsei, omit)}) to vc; |
Harald Welte | c568000 | 2021-02-13 16:45:30 +0100 | [diff] [blame^] | 491 | /* switch to "alive" state already before sending the SNS-CONFIG, as otherwise |
| 492 | * there would be a race condition between internally performing the state change |
| 493 | * of all related NS-VCs and the first incoming NS-PDU after SNS-CONFIG-ACK */ |
| 494 | f_broadcast_ns_ctrl(NsCtrlRequest:ForceAliveState); |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 495 | /* send a SNS-CONFIG in response and expect a SNS-CONFIG-ACK */ |
| 496 | var template (omit) IP4_Elements v4; |
| 497 | var template (omit) IP6_Elements v6; |
| 498 | gen_sns_ip_elems(v4, v6); |
| 499 | NSVC.send(SnsRequest:{sind.nsvci, |
| 500 | ts_SNS_CONFIG(g_config.nsei, true, v4, v6)}) to vc; |
| 501 | alt { |
Harald Welte | c568000 | 2021-02-13 16:45:30 +0100 | [diff] [blame^] | 502 | [] as_ns_common_status() { |
| 503 | repeat; |
| 504 | } |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 505 | [] NSVC.receive(SnsIndication:{sind.nsvci, |
| 506 | tr_SNS_CONFIG_ACK(g_config.nsei, omit)}) from vc { |
| 507 | /* success */ |
| 508 | log("SNS Config succeeded. Sending Alive"); |
| 509 | /* inform all NS-VC that they are now considered alive */ |
Harald Welte | 3bd182f | 2021-02-13 16:43:22 +0100 | [diff] [blame] | 510 | f_broadcast_ns_ctrl(NsCtrlRequest:StartAliveProcedure); |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 511 | } |
| 512 | [] NSVC.receive(SnsIndication:{sind.nsvci, |
| 513 | tr_SNS_CONFIG_ACK(g_config.nsei, ?)}) from vc { |
| 514 | setverdict(fail, "Unexpected SNS-CONFIG-NACK"); |
| 515 | self.stop; |
| 516 | } |
| 517 | } |
| 518 | } |
| 519 | [] NSVC.receive(SnsIndication:{?, tr_SNS_CONFIG(g_config.nsei, false, ?)}) { /* ignore */} |
| 520 | [] NSVC.receive(SnsIndication:{?, tr_SNS_CONFIG(g_config.nsei, true, ?)}) { |
| 521 | setverdict(fail, "Unexpected SNS-CONFIG content"); |
| 522 | self.stop; |
| 523 | } |
| 524 | [] NSVC.receive(SnsIndication:{?, tr_SNS_CONFIG(?, ?, ?)}) { |
| 525 | setverdict(fail, "SNS-CONFIG from unexpected NSEI"); |
| 526 | self.stop; |
| 527 | } |
| 528 | } |
| 529 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 530 | /*********************************************************************** |
| 531 | per-NSVC component. Exists once for each NS-VC in the NS-VCG |
| 532 | ***********************************************************************/ |
| 533 | |
| 534 | type component NSVC_CT { |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 535 | /* UDP port towards the bottom (IUT) */ |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 536 | port NS_PROVIDER_PT NSCP; |
| 537 | var NS_Provider_IPL4_CT vc_NSP_IP; |
Harald Welte | 867243a | 2020-09-13 18:32:32 +0200 | [diff] [blame] | 538 | #ifdef NS_EMULATION_FR |
| 539 | var NS_Provider_FR_CT vc_NSP_FR; |
| 540 | #endif |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 541 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 542 | /* port towards the NS_CT */ |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 543 | port NSint_SP_PT NS_SP; |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 544 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 545 | /* configuration passed by the user */ |
| 546 | var NSVCConfiguration g_nsvc_config; |
| 547 | /* we cannot access the NS_CT.config and hence need to copy those */ |
| 548 | var NSConfiguration g_config; |
Alexander Couzens | 2c12b24 | 2018-07-31 00:30:11 +0200 | [diff] [blame] | 549 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 550 | var NsvcState vc_state := NSVC_S_DEAD_BLOCKED; |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 551 | |
| 552 | timer Tns_alive := 3.0; |
| 553 | timer Tns_test := 10.0; |
| 554 | timer Tns_block := 10.0; |
Harald Welte | 3dd8355 | 2020-09-14 11:38:01 +0200 | [diff] [blame] | 555 | timer Tns_reset := 10.0; |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 556 | } |
| 557 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 558 | function NSVCStart(NSVCConfiguration init_config, NSConfiguration init_g_config, charstring id := testcasename()) runs on NSVC_CT { |
| 559 | g_nsvc_config := init_config; |
| 560 | g_config := init_g_config; |
| 561 | f_init(id & "-NSVCemu" & int2str(g_nsvc_config.nsvci)); |
| 562 | f_ScanEvents(); |
Alexander Couzens | 2c12b24 | 2018-07-31 00:30:11 +0200 | [diff] [blame] | 563 | } |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 564 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 565 | private function f_init(charstring id) runs on NSVC_CT { |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 566 | if (ischosen(g_nsvc_config.provider.ip)) { |
| 567 | /* Connect the UDP socket */ |
| 568 | vc_NSP_IP := NS_Provider_IPL4_CT.create(id & "-provIP"); |
| 569 | connect(self:NSCP, vc_NSP_IP:NSE); |
| 570 | vc_NSP_IP.start(NS_Provider_IPL4.main(g_nsvc_config, g_config, id)); |
| 571 | #ifdef NS_EMULATION_FR |
| 572 | } else if (ischosen(g_nsvc_config.provider.fr)) { |
| 573 | vc_NSP_FR := NS_Provider_FR_CT.create(id & "-provFR"); |
| 574 | connect(self:NSCP, vc_NSP_FR:NSE); |
| 575 | vc_NSP_FR.start(NS_Provider_FR.main(g_nsvc_config, g_config, id)); |
| 576 | #endif |
Harald Welte | e15299a | 2020-11-17 17:30:09 +0100 | [diff] [blame] | 577 | } else { |
| 578 | Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Unsupported NS provider"); |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | f_change_state(NSVC_S_DEAD_BLOCKED); |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 582 | } |
| 583 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 584 | private function f_change_state(NsvcState new_state) runs on NSVC_CT { |
| 585 | var NsvcState old_state := vc_state; |
| 586 | vc_state := new_state; |
| 587 | log("NSVC ", g_nsvc_config.nsvci, " State Transition: ", old_state, " -> ", new_state); |
| 588 | NS_SP.send(ts_NsStsInd(g_config.nsei, g_nsvc_config.nsvci, old_state, new_state)); |
| 589 | } |
| 590 | |
| 591 | private function f_sendReset() runs on NSVC_CT { |
| 592 | NSCP.send(ts_NS_RESET(NS_CAUSE_OM_INTERVENTION, g_nsvc_config.nsvci, g_config.nsei)); |
Harald Welte | 3dd8355 | 2020-09-14 11:38:01 +0200 | [diff] [blame] | 593 | Tns_reset.start; |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 594 | vc_state := NSVC_S_WAIT_RESET; |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 595 | } |
| 596 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 597 | private function f_sendAlive() runs on NSVC_CT { |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 598 | NSCP.send(t_NS_ALIVE); |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 599 | Tns_alive.start; |
| 600 | } |
| 601 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 602 | private function f_sendUnblock() runs on NSVC_CT { |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 603 | NSCP.send(t_NS_UNBLOCK); |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 604 | Tns_block.start; |
| 605 | } |
| 606 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 607 | private function f_sendBlock(NsCause cause) runs on NSVC_CT { |
| 608 | NSCP.send(ts_NS_BLOCK(cause, g_nsvc_config.nsvci)); |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 609 | Tns_block.start; |
| 610 | } |
| 611 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 612 | private altstep as_allstate() runs on NSVC_CT { |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 613 | var PDU_NS rf; |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 614 | var ASP_Event evt; |
| 615 | |
Harald Welte | c0c67ff | 2021-02-03 19:26:30 +0100 | [diff] [blame] | 616 | [] NSCP.receive(NS_Provider_Evt:{link_status:=NS_PROV_LINK_STATUS_DOWN}) { |
| 617 | log("Provider Link went down"); |
| 618 | Tns_test.stop; |
| 619 | Tns_alive.stop; |
| 620 | f_change_state(NSVC_S_DEAD_BLOCKED); |
| 621 | } |
| 622 | |
Harald Welte | 3f82089 | 2021-01-19 18:19:23 +0100 | [diff] [blame] | 623 | [] NS_SP.receive(NsCtrlRequest:DisableReq) { |
| 624 | /* To make NS-VCG remove us from list of active NS-VC */ |
| 625 | f_change_state(NSVC_S_DEAD_BLOCKED); |
| 626 | log("Disabling NSVC on user request"); |
| 627 | f_change_state(NSVC_S_DISABLED); |
| 628 | Tns_test.stop; |
| 629 | Tns_alive.stop; |
| 630 | } |
| 631 | |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 632 | /* transition to DEAD if t_alive times out */ |
Harald Welte | 9a7c512 | 2020-09-14 11:35:57 +0200 | [diff] [blame] | 633 | [] Tns_alive.timeout { |
| 634 | log("Tns-alive expired: changing to DEAD_BLOCKED + starting Tns-test"); |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 635 | f_change_state(NSVC_S_DEAD_BLOCKED); |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 636 | Tns_test.start; |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 637 | } |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 638 | |
Harald Welte | 9a7c512 | 2020-09-14 11:35:57 +0200 | [diff] [blame] | 639 | [] Tns_test.timeout { |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 640 | log("Tns-test expired: sending NS-ALIVE"); |
| 641 | f_sendAlive(); |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 642 | } |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 643 | |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 644 | /* Stop t_alive when receiving ALIVE-ACK */ |
Harald Welte | 9a7c512 | 2020-09-14 11:35:57 +0200 | [diff] [blame] | 645 | [Tns_alive.running] NSCP.receive(t_NS_ALIVE_ACK) { |
Daniel Willmann | 654f85e | 2020-10-12 18:10:06 +0200 | [diff] [blame] | 646 | log("Rx NS-ALIVE-ACK: stopping Tns-alive; starting Tns-test"); |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 647 | Tns_alive.stop; |
| 648 | Tns_test.start; |
| 649 | } |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 650 | |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 651 | /* respond to NS-ALIVE with NS-ALIVE-ACK */ |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 652 | [] NSCP.receive(t_NS_ALIVE) { |
| 653 | NSCP.send(t_NS_ALIVE_ACK); |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 654 | } |
| 655 | |
| 656 | /* Respond to BLOCK for wrong NSVCI */ |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 657 | [] NSCP.receive(tr_NS_BLOCK(?, ?)) -> value rf { |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 658 | log("Rx NS-BLOCK for unknown NSVCI"); |
| 659 | /* FIXME */ |
| 660 | } |
| 661 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 662 | [not g_config.handle_sns] as_handle_reset(); |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 663 | |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 664 | [g_config.handle_sns and ischosen(g_nsvc_config.provider.ip)] as_nsvc_sns(); |
Harald Welte | 5e514fa | 2018-07-05 00:01:45 +0200 | [diff] [blame] | 665 | |
Harald Welte | 4998a09 | 2021-02-04 14:30:47 +0100 | [diff] [blame] | 666 | /* log + ignore NS-STATUS; must not create another NS-STATUS in response */ |
| 667 | [] NSCP.receive(tr_NS_STATUS(?)) -> value rf { |
| 668 | log("Rx NS-STATUS ", rf," in state ", vc_state); |
| 669 | } |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 670 | /* default case of handling unknown PDUs */ |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 671 | [] NSCP.receive(PDU_NS: ?) -> value rf { |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 672 | log("Rx Unexpected NS PDU ", rf," in state ", vc_state); |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 673 | NSCP.send(ts_NS_STATUS(NS_CAUSE_PDU_NOT_COMPATIBLE_WITH_PROTOCOL_STATE, rf)); |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 674 | } |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 675 | } |
| 676 | |
Harald Welte | 3f82089 | 2021-01-19 18:19:23 +0100 | [diff] [blame] | 677 | private altstep as_disabled() runs on NSVC_CT { |
| 678 | [g_config.handle_sns == true] NS_SP.receive(NsCtrlRequest:EnableReq) { |
| 679 | f_change_state(NSVC_S_ALIVE_UNBLOCKED); |
| 680 | f_sendAlive(); |
| 681 | Tns_test.start; |
| 682 | } |
| 683 | [g_config.handle_sns == false] NS_SP.receive(NsCtrlRequest:EnableReq) { |
| 684 | f_change_state(NSVC_S_DEAD_BLOCKED); |
| 685 | Tns_test.start; |
| 686 | } |
| 687 | /* drop any received messages while in this state */ |
| 688 | [] NSCP.receive { |
| 689 | log("Dropping inbound NS mesage as NS-VC is disabled"); |
| 690 | } |
| 691 | [] NS_SP.receive { |
| 692 | log("Dropping user primitive as NS-VC is disabled"); |
| 693 | } |
| 694 | } |
| 695 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 696 | private altstep as_handle_reset() runs on NSVC_CT { |
Daniel Willmann | 654f85e | 2020-10-12 18:10:06 +0200 | [diff] [blame] | 697 | var PDU_NS rf; |
| 698 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 699 | [g_config.role_sgsn] NSCP.receive(NS_Provider_Evt:{link_status:=NS_PROV_LINK_STATUS_UP}) { |
Daniel Willmann | 654f85e | 2020-10-12 18:10:06 +0200 | [diff] [blame] | 700 | log("Provider Link came up: waiting for NS-RESET"); |
| 701 | } |
| 702 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 703 | [not g_config.role_sgsn] NSCP.receive(NS_Provider_Evt:{link_status:=NS_PROV_LINK_STATUS_UP}) { |
Daniel Willmann | 654f85e | 2020-10-12 18:10:06 +0200 | [diff] [blame] | 704 | log("Provider Link came up: sending NS-RESET"); |
| 705 | f_sendReset(); |
| 706 | } |
| 707 | |
| 708 | /* Respond to RESET with correct NSEI/NSVCI */ |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 709 | [] NSCP.receive(tr_NS_RESET(?, g_nsvc_config.nsvci, g_config.nsei)) -> value rf { |
| 710 | f_change_state(NSVC_S_ALIVE_BLOCKED); |
| 711 | NSCP.send(ts_NS_RESET_ACK(g_nsvc_config.nsvci, g_config.nsei)); |
Daniel Willmann | 654f85e | 2020-10-12 18:10:06 +0200 | [diff] [blame] | 712 | log("Rx NS-RESET: Sending NS-ALIVE"); |
| 713 | f_sendAlive(); |
| 714 | Tns_test.start; |
| 715 | } |
| 716 | |
| 717 | /* Respond to RESET with wrong NSEI/NSVCI */ |
| 718 | [] NSCP.receive(tr_NS_RESET(?, ?, ?)) -> value rf { |
| 719 | log("Rx NS-RESET for unknown NSEI/NSVCI"); |
| 720 | /* FIXME */ |
| 721 | } |
| 722 | } |
| 723 | |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 724 | private altstep as_nsvc_sns() runs on NSVC_CT { |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 725 | var PDU_NS rf; |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 726 | var SnsRequest sreq; |
Alexander Couzens | d533890 | 2020-12-21 18:41:21 +0100 | [diff] [blame] | 727 | [] NSCP.receive(NS_Provider_Evt:{link_status:=NS_PROV_LINK_STATUS_UP}) { |
| 728 | log("Provider Link came up. Waiting for SNS Size"); |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 729 | } |
Daniel Willmann | 654f85e | 2020-10-12 18:10:06 +0200 | [diff] [blame] | 730 | |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 731 | /* pass up to NS-VCG */ |
| 732 | [] NSCP.receive(tr_SNS(g_config.nsei)) -> value rf { |
| 733 | NS_SP.send(SnsIndication:{g_nsvc_config.nsvci, rf}); |
Harald Welte | 5e514fa | 2018-07-05 00:01:45 +0200 | [diff] [blame] | 734 | } |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 735 | [] NSCP.receive(tr_SNS(?)) -> value rf { |
| 736 | setverdict(fail, "SNS from unexpected NSEI: ", rf); |
Harald Welte | 5e514fa | 2018-07-05 00:01:45 +0200 | [diff] [blame] | 737 | self.stop; |
| 738 | } |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 739 | [] NS_SP.receive(SnsRequest:{g_nsvc_config.nsvci, ?}) -> value sreq { |
| 740 | NSCP.send(sreq.ns); |
Harald Welte | 5e514fa | 2018-07-05 00:01:45 +0200 | [diff] [blame] | 741 | } |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 742 | [] NS_SP.receive(SnsRequest:?) -> value sreq { |
| 743 | setverdict(fail, "Unexpected SNS from NSVC: ", sreq); |
Harald Welte | 5e514fa | 2018-07-05 00:01:45 +0200 | [diff] [blame] | 744 | self.stop; |
| 745 | } |
Harald Welte | c568000 | 2021-02-13 16:45:30 +0100 | [diff] [blame^] | 746 | [] NS_SP.receive(NsCtrlRequest:ForceAliveState) { |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 747 | f_change_state(NSVC_S_ALIVE_UNBLOCKED); |
Harald Welte | c568000 | 2021-02-13 16:45:30 +0100 | [diff] [blame^] | 748 | } |
| 749 | [] NS_SP.receive(NsCtrlRequest:StartAliveProcedure) { |
Harald Welte | 1308dbb | 2021-01-18 18:19:38 +0100 | [diff] [blame] | 750 | f_sendAlive(); |
| 751 | Tns_test.start; |
Harald Welte | 5e514fa | 2018-07-05 00:01:45 +0200 | [diff] [blame] | 752 | } |
| 753 | } |
| 754 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 755 | private altstep as_alive_blocked() runs on NSVC_CT { |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 756 | var PDU_NS rf; |
| 757 | /* bogus block, just respond with ACK */ |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 758 | [] NSCP.receive(tr_NS_BLOCK(?, g_nsvc_config.nsvci)) -> value rf { |
| 759 | NSCP.send(ts_NS_BLOCK_ACK(g_nsvc_config.nsvci)); |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 760 | } |
| 761 | /* Respond to UNBLOCK with UNBLOCK-ACK + change state */ |
| 762 | [] NSCP.receive(t_NS_UNBLOCK) -> value rf { |
| 763 | NSCP.send(t_NS_UNBLOCK_ACK); |
| 764 | Tns_block.stop; |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 765 | f_change_state(NSVC_S_ALIVE_UNBLOCKED); |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 766 | } |
| 767 | [] NSCP.receive(t_NS_UNBLOCK_ACK) -> value rf { |
| 768 | Tns_block.stop; |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 769 | f_change_state(NSVC_S_ALIVE_UNBLOCKED); |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 770 | } |
Harald Welte | da9d938 | 2020-12-07 15:53:57 +0100 | [diff] [blame] | 771 | /* tolerate a late NS-BLOCK-ACK from peer */ |
| 772 | [] NSCP.receive(tr_NS_BLOCK_ACK(g_nsvc_config.nsvci)) -> value rf { |
| 773 | } |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 774 | [] Tns_block.timeout { |
| 775 | /* repeat unblock transmission */ |
| 776 | f_sendUnblock(); |
| 777 | } |
| 778 | } |
| 779 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 780 | private altstep as_alive_unblocked() runs on NSVC_CT { |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 781 | var NsUnitdataRequest ud_req; |
Harald Welte | 013d65a | 2020-09-13 14:41:31 +0200 | [diff] [blame] | 782 | var PDU_NS rf; |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 783 | /* bogus unblock, just respond with ACK */ |
| 784 | [] NSCP.receive(t_NS_UNBLOCK) -> value rf { |
| 785 | NSCP.send(t_NS_UNBLOCK_ACK); |
| 786 | } |
| 787 | /* Respond to BLOCK with BLOCK-ACK + change state */ |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 788 | [] NSCP.receive(tr_NS_BLOCK(?, g_nsvc_config.nsvci)) -> value rf { |
| 789 | NSCP.send(ts_NS_BLOCK_ACK(g_nsvc_config.nsvci)); |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 790 | Tns_block.stop; |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 791 | f_change_state(NSVC_S_ALIVE_BLOCKED); |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 792 | } |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 793 | [] NSCP.receive(tr_NS_BLOCK_ACK(g_nsvc_config.nsvci)) -> value rf { |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 794 | Tns_block.stop; |
| 795 | } |
Harald Welte | da9d938 | 2020-12-07 15:53:57 +0100 | [diff] [blame] | 796 | /* tolerate a late NS-UNBLOCK-ACK from peer */ |
| 797 | [] NSCP.receive(t_NS_UNBLOCK_ACK) -> value rf { |
| 798 | } |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 799 | |
| 800 | [not ischosen(g_nsvc_config.provider.ip) or |
| 801 | g_nsvc_config.provider.ip.data_weight > 0] as_alive_unblocked_data(); |
| 802 | |
| 803 | [not ischosen(g_nsvc_config.provider.ip) or |
| 804 | g_nsvc_config.provider.ip.signalling_weight > 0] as_alive_unblocked_sig(); |
| 805 | |
| 806 | /* catch any violations of above rule */ |
| 807 | [ischosen(g_nsvc_config.provider.ip)] NSCP.receive(tr_NS_UNITDATA(?, ?, ?)) -> value rf { |
| 808 | Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, |
| 809 | log2str("Unexpected Rx NS-UNITDATA on NSVC with data_weight=", |
| 810 | g_nsvc_config.provider.ip.data_weight, ", sig_weight=", |
| 811 | g_nsvc_config.provider.ip.signalling_weight, ": ", rf)); |
| 812 | } |
| 813 | [ischosen(g_nsvc_config.provider.ip)] NS_SP.receive(tr_NsUdReq(g_config.nsei, ?, ?, *, *)) -> value ud_req { |
| 814 | Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, |
| 815 | log2str("Unexpected Rx TX-UNITDATA on NSVC with data_weight=", |
| 816 | g_nsvc_config.provider.ip.data_weight, ", sig_weight=", |
| 817 | g_nsvc_config.provider.ip.signalling_weight, ": ", ud_req)); |
| 818 | } |
| 819 | } |
| 820 | |
| 821 | /* user data transfer; only permitted for some NS-VC */ |
| 822 | private altstep as_alive_unblocked_data() runs on NSVC_CT { |
| 823 | var NsUnitdataRequest ud_req; |
| 824 | var PDU_NS rf; |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 825 | /* NS-UNITDATA PDU from network to NS-UNITDATA.ind to user */ |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 826 | [] NSCP.receive(tr_NS_UNITDATA_User(?, ?)) -> value rf { |
Harald Welte | 80a249a | 2020-11-17 19:57:40 +0100 | [diff] [blame] | 827 | NS_SP.send(ts_NsUdInd(g_config.nsei, g_nsvc_config.nsvci, |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 828 | oct2int(rf.pDU_NS_Unitdata.bVCI), |
| 829 | rf.pDU_NS_Unitdata.nS_SDU)); |
| 830 | } |
| 831 | /* NS-UNITDATA.req from user to NS-UNITDATA PDU on network */ |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 832 | [] NS_SP.receive(tr_NsUdReq(g_config.nsei, t_BssgpBvciUser, ?, ?, omit)) -> value ud_req { |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 833 | /* using raw octetstring PDU */ |
| 834 | NSCP.send(ts_NS_UNITDATA(t_SduCtrlB, ud_req.bvci, ud_req.sdu)); |
| 835 | } |
Harald Welte | be7afce | 2021-01-17 22:04:36 +0100 | [diff] [blame] | 836 | [] NS_SP.receive(tr_NsUdReq(g_config.nsei, t_BssgpBvciUser, ?, omit, ?)) -> value ud_req { |
| 837 | /* using decoded BSSGP PDU that we need to encode first */ |
| 838 | var octetstring enc := enc_PDU_BSSGP(ud_req.bssgp); |
| 839 | NSCP.send(ts_NS_UNITDATA(t_SduCtrlB, ud_req.bvci, enc)); |
| 840 | } |
| 841 | } |
| 842 | |
| 843 | /* signalling (BVCI=0) transfer; only permitted for some NS-VC */ |
| 844 | private altstep as_alive_unblocked_sig() runs on NSVC_CT { |
| 845 | var NsUnitdataRequest ud_req; |
| 846 | var PDU_NS rf; |
| 847 | /* NS-UNITDATA PDU from network to NS-UNITDATA.ind to user */ |
| 848 | [] NSCP.receive(tr_NS_UNITDATA(?, 0, ?)) -> value rf { |
| 849 | NS_SP.send(ts_NsUdInd(g_config.nsei, g_nsvc_config.nsvci, |
| 850 | oct2int(rf.pDU_NS_Unitdata.bVCI), |
| 851 | rf.pDU_NS_Unitdata.nS_SDU)); |
| 852 | } |
| 853 | /* NS-UNITDATA.req from user to NS-UNITDATA PDU on network */ |
| 854 | [] NS_SP.receive(tr_NsUdReq(g_config.nsei, 0, ?, ?, omit)) -> value ud_req { |
| 855 | /* using raw octetstring PDU */ |
| 856 | NSCP.send(ts_NS_UNITDATA(t_SduCtrlB, ud_req.bvci, ud_req.sdu)); |
| 857 | } |
| 858 | [] NS_SP.receive(tr_NsUdReq(g_config.nsei, 0, ?, omit, ?)) -> value ud_req { |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 859 | /* using decoded BSSGP PDU that we need to encode first */ |
| 860 | var octetstring enc := enc_PDU_BSSGP(ud_req.bssgp); |
| 861 | NSCP.send(ts_NS_UNITDATA(t_SduCtrlB, ud_req.bvci, enc)); |
| 862 | } |
| 863 | } |
Harald Welte | 6e594f2 | 2017-07-23 16:19:35 +0200 | [diff] [blame] | 864 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 865 | private altstep as_wait_reset() runs on NSVC_CT { |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 866 | var PDU_NS rf; |
Harald Welte | 3dd8355 | 2020-09-14 11:38:01 +0200 | [diff] [blame] | 867 | [] Tns_reset.timeout { |
| 868 | /* If the sending entity of an NS-RESET PDU receives no NS-RESET-ACK PDU before timer |
| 869 | * Tns-reset expires the corresponding NS-VCs shall remain blocked and dead and the |
| 870 | * entire reset procedure shall be repeated */ |
| 871 | f_sendReset(); |
| 872 | } |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 873 | [] NSCP.receive(tr_NS_RESET_ACK(g_nsvc_config.nsvci, g_config.nsei)) -> value rf { |
Harald Welte | 3dd8355 | 2020-09-14 11:38:01 +0200 | [diff] [blame] | 874 | Tns_reset.stop; |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 875 | f_change_state(NSVC_S_ALIVE_BLOCKED); |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 876 | f_sendAlive(); |
| 877 | f_sendUnblock(); |
| 878 | } |
| 879 | } |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 880 | |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 881 | private function f_ScanEvents() runs on NSVC_CT { |
Harald Welte | 4a6a663 | 2020-09-14 09:58:53 +0200 | [diff] [blame] | 882 | var PDU_NS rf; |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 883 | while (true) { |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 884 | alt { |
Harald Welte | 90f1974 | 2020-11-06 19:34:40 +0100 | [diff] [blame] | 885 | [vc_state == NSVC_S_WAIT_RESET] as_wait_reset(); |
| 886 | [vc_state == NSVC_S_ALIVE_BLOCKED] as_alive_blocked(); |
| 887 | [vc_state == NSVC_S_ALIVE_UNBLOCKED] as_alive_unblocked(); |
Harald Welte | 3f82089 | 2021-01-19 18:19:23 +0100 | [diff] [blame] | 888 | [vc_state == NSVC_S_DISABLED] as_disabled(); |
| 889 | [vc_state != NSVC_S_DISABLED] as_allstate(); |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 890 | } |
| 891 | } |
Harald Welte | 6fff364 | 2017-07-22 21:36:13 +0200 | [diff] [blame] | 892 | } |
| 893 | } |