Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 1 | % MTP2 Link State Control according to Q.703 Figure 3 / Figure 8 |
| 2 | |
| 3 | % (C) 2011-2012 by Harald Welte <laforge@gnumonks.org> |
| 4 | % |
| 5 | % All Rights Reserved |
| 6 | % |
| 7 | % This program is free software; you can redistribute it and/or modify |
| 8 | % it under the terms of the GNU Affero General Public License as |
| 9 | % published by the Free Software Foundation; either version 3 of the |
| 10 | % License, or (at your option) any later version. |
| 11 | % |
| 12 | % This program is distributed in the hope that it will be useful, |
| 13 | % but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | % GNU General Public License for more details. |
| 16 | % |
| 17 | % You should have received a copy of the GNU Affero General Public License |
| 18 | % along with this program. If not, see <http://www.gnu.org/licenses/>. |
Harald Welte | f8bf032 | 2012-04-16 13:10:47 +0200 | [diff] [blame^] | 19 | % |
| 20 | % Additional Permission under GNU AGPL version 3 section 7: |
| 21 | % |
| 22 | % If you modify this Program, or any covered work, by linking or |
| 23 | % combining it with runtime libraries of Erlang/OTP as released by |
| 24 | % Ericsson on http://www.erlang.org (or a modified version of these |
| 25 | % libraries), containing parts covered by the terms of the Erlang Public |
| 26 | % License (http://www.erlang.org/EPLICENSE), the licensors of this |
| 27 | % Program grant you additional permission to convey the resulting work |
| 28 | % without the need to license the runtime libraries of Erlang/OTP under |
| 29 | % the GNU Affero General Public License. Corresponding Source for a |
| 30 | % non-source form of such a combination shall include the source code |
| 31 | % for the parts of the runtime libraries of Erlang/OTP used as well as |
| 32 | % that of the covered work. |
Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 33 | |
| 34 | -module(mtp2_lsc). |
| 35 | -author('Harald Welte <laforge@gnumonks.org>'). |
| 36 | -behaviour(gen_fsm). |
| 37 | |
| 38 | % gen_fsm exports |
| 39 | -export([init/1, terminate/3, code_change/4, handle_event/3, handle_info/3]). |
| 40 | |
| 41 | % individual FSM states |
| 42 | -export([power_off/2, out_of_service/2, initial_alignment/2, |
| 43 | aligned_not_ready/2, aligned_ready/2, in_service/2, |
| 44 | processor_outage/2]). |
| 45 | |
| 46 | % sync event handlers |
| 47 | -export([power_off/3]). |
| 48 | |
| 49 | -record(lsc_state, { |
| 50 | t1_timeout, |
| 51 | t1, |
| 52 | iac_pid, |
| 53 | aerm_pid, |
| 54 | l3_pid, |
| 55 | poc_pid, |
| 56 | txc_pid, |
Harald Welte | 9ebf316 | 2012-01-20 02:02:25 +0100 | [diff] [blame] | 57 | rc_pid, |
Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 58 | local_proc_out, |
| 59 | proc_out, |
| 60 | emergency |
| 61 | }). |
| 62 | |
| 63 | -define(M2PA_T1_DEF, 300000). |
| 64 | |
| 65 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 66 | % gen_fsm callbacks |
| 67 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 68 | |
Harald Welte | 9ebf316 | 2012-01-20 02:02:25 +0100 | [diff] [blame] | 69 | init([Aerm, Rc, Txc, L3, Poc]) -> |
Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 70 | {ok, Iac} = gen_fsm:start_link(mtp2_iac, [self(), Aerm, Txc], [{debug, [trace]}]), |
| 71 | LscState = #lsc_state{t1_timeout = ?M2PA_T1_DEF, |
| 72 | iac_pid = Iac, |
| 73 | aerm_pid = Aerm, |
| 74 | l3_pid = L3, |
| 75 | poc_pid = L3, |
| 76 | txc_pid = Txc, |
Harald Welte | 9ebf316 | 2012-01-20 02:02:25 +0100 | [diff] [blame] | 77 | rc_pid = Rc, |
Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 78 | local_proc_out = 0, |
| 79 | proc_out = 0, |
| 80 | emergency = 0}, |
| 81 | {ok, power_off, LscState}. |
| 82 | |
| 83 | terminate(Reason, State, _LoopDat) -> |
| 84 | io:format("Terminating ~p in State ~p (Reason: ~p)~n", |
| 85 | [?MODULE, State, Reason]), |
| 86 | ok. |
| 87 | |
| 88 | code_change(_OldVsn, StateName, LoopDat, _Extra) -> |
| 89 | {ok, StateName, LoopDat}. |
| 90 | |
| 91 | handle_event(Event, State, LoopDat) -> |
| 92 | io:format("Unknown Event ~p in state ~p~n", [Event, State]), |
| 93 | {next_state, State, LoopDat}. |
| 94 | |
| 95 | |
| 96 | handle_info(Info, State, LoopDat) -> |
| 97 | io:format("Unknown Info ~p in state ~p~n", [Info, State]), |
| 98 | {next_state, State, LoopDat}. |
| 99 | |
| 100 | |
| 101 | |
| 102 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 103 | % STATE: power_off |
| 104 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 105 | |
| 106 | power_off(power_on, LoopDat) -> |
| 107 | % Power On from MGMT |
| 108 | send_to(txc, start, LoopDat), |
| 109 | send_to(txc, si_os, LoopDat), |
| 110 | send_to(aerm, set_ti_to_tin, LoopDat), |
| 111 | % Cancel local processor outage, cancel emergency |
| 112 | {next_state, out_of_service, LoopDat#lsc_state{local_proc_out=0, emergency=0}}. |
| 113 | |
| 114 | power_off(get_iac_pid, From, LoopDat) -> |
| 115 | Iac = LoopDat#lsc_state.iac_pid, |
| 116 | {reply, {ok, Iac}, power_off, LoopDat}. |
| 117 | |
| 118 | |
| 119 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 120 | % STATE: out_of_service |
| 121 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 122 | |
| 123 | out_of_service(start, LoopDat) -> |
| 124 | % Start from L3 |
| 125 | send_to(rc, start, LoopDat), |
| 126 | send_to(txc, start, LoopDat), |
| 127 | case LoopDat#lsc_state.emergency of |
| 128 | 1 -> |
| 129 | send_to(iac, emergency, LoopDat); |
| 130 | _ -> |
| 131 | ok |
| 132 | end, |
| 133 | send_to(iac, start, LoopDat), |
| 134 | {next_state, initial_alignment, LoopDat}; |
| 135 | |
| 136 | out_of_service(retrieve_bsnt, LoopDat) -> |
| 137 | send_to(rc, retrieve_bsnt, LoopDat), |
| 138 | {next_state, out_of_service, LoopDat}; |
| 139 | |
| 140 | out_of_service(retrieval_request_and_fsnc, LoopDat) -> |
| 141 | send_to(txc, retrieval_request_and_fsnc, LoopDat), |
| 142 | {next_state, out_of_service, LoopDat}; |
| 143 | |
| 144 | out_of_service(emergency, LoopDat) -> |
| 145 | {next_state, out_of_service, LoopDat#lsc_state{emergency=1}}; |
| 146 | |
| 147 | out_of_service(emergency_ceases, LoopDat) -> |
| 148 | {next_state, out_of_service, LoopDat#lsc_state{emergency=0}}; |
| 149 | |
| 150 | out_of_service(What, LoopDat) when What == local_processor_outage; |
| 151 | What == level3_failure -> |
| 152 | {next_state, out_of_service, LoopDat#lsc_state{local_proc_out=1}}; |
| 153 | |
Harald Welte | e501437 | 2012-01-19 23:19:34 +0100 | [diff] [blame] | 154 | out_of_service(si_os, LoopDat) -> |
| 155 | % this transition is not specified in Q.703, but it makes |
| 156 | % quite a bit of sense. yate M2PA requires it, too. |
| 157 | {next_state, out_of_service, LoopDat}; |
| 158 | |
Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 159 | out_of_service(local_processor_recovered, LoopDat) -> |
| 160 | {next_state, out_of_service, LoopDat#lsc_state{local_proc_out=0}}. |
| 161 | |
| 162 | |
| 163 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 164 | % STATE: initial_alignment |
| 165 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 166 | |
| 167 | initial_alignment(What, LoopDat) when What == local_processor_outage; |
| 168 | What == level3_failure -> |
| 169 | {next_state, initial_alignment, LoopDat#lsc_state{local_proc_out=1}}; |
| 170 | |
| 171 | initial_alignment(local_processor_recovered, LoopDat) -> |
| 172 | {next_state, initial_alignment, LoopDat#lsc_state{local_proc_out=0}}; |
| 173 | |
| 174 | initial_alignment(emergency, LoopDat) -> |
| 175 | send_to(iac, emergency, LoopDat), |
| 176 | {next_state, initial_alignment, LoopDat#lsc_state{emergency=1}}; |
| 177 | |
| 178 | initial_alignment(alignment_complete, LoopDat) -> |
| 179 | send_to(suerm, start, LoopDat), |
| 180 | {ok, T1} = timer:apply_after(LoopDat#lsc_state.t1_timeout, |
| 181 | gen_fsm, send_event, |
| 182 | [self(), {timer_expired, t1}]), |
| 183 | case LoopDat#lsc_state.local_proc_out of |
| 184 | 1 -> |
| 185 | send_to(poc, local_processor_outage, LoopDat), |
| 186 | send_to(txc, si_po, LoopDat), |
Harald Welte | 9ebf316 | 2012-01-20 02:02:25 +0100 | [diff] [blame] | 187 | send_to(rc, reject_msu_fisu, LoopDat), |
Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 188 | NextState = aligned_not_ready; |
| 189 | _ -> |
| 190 | send_to(txc, fisu, LoopDat), |
Harald Welte | 9ebf316 | 2012-01-20 02:02:25 +0100 | [diff] [blame] | 191 | send_to(rc, accept_msu_fisu, LoopDat), |
Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 192 | NextState = aligned_ready |
| 193 | end, |
| 194 | {next_state, NextState, LoopDat#lsc_state{t1=T1}}; |
| 195 | |
| 196 | initial_alignment(stop, LoopDat) -> |
| 197 | send_to(iac, stop, LoopDat), |
| 198 | send_to(rc, stop, LoopDat), |
| 199 | send_to(txc, si_os, LoopDat), |
| 200 | {next_state, out_of_service, LoopDat#lsc_state{local_proc_out=0, emergency=0}}; |
| 201 | |
| 202 | initial_alignment(link_failure, LoopDat) -> |
| 203 | send_to(l3, out_of_service, LoopDat), |
| 204 | send_to(iac, stop, LoopDat), |
| 205 | send_to(rc, stop, LoopDat), |
| 206 | send_to(txc, si_os, LoopDat), |
| 207 | {next_state, out_of_service, LoopDat#lsc_state{local_proc_out=0, emergency=0}}; |
| 208 | |
| 209 | initial_alignment(alignment_not_possible, LoopDat) -> |
| 210 | send_to(rc, stop, LoopDat), |
| 211 | send_to(txc, si_os, LoopDat), |
| 212 | {next_state, out_of_service, LoopDat#lsc_state{local_proc_out=0, emergency=0}}; |
| 213 | |
Harald Welte | 7098497 | 2012-01-19 22:50:39 +0100 | [diff] [blame] | 214 | % forward into IAC sub-state-machine |
Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 215 | initial_alignment(What, LoopDat) when |
Harald Welte | 7098497 | 2012-01-19 22:50:39 +0100 | [diff] [blame] | 216 | What == si_n; What == si_e; What == si_o; What == si_os; |
| 217 | What == fisu_msu_received -> |
| 218 | Iac = LoopDat#lsc_state.iac_pid, |
| 219 | gen_fsm:send_event(Iac, What), |
Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 220 | {next_state, initial_alignment, LoopDat}. |
| 221 | |
| 222 | |
| 223 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 224 | % STATE: aligned_ready |
| 225 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 226 | |
| 227 | aligned_ready(SioOrSios, LoopDat) when SioOrSios == si_o; |
| 228 | SioOrSios == si_os; |
| 229 | SioOrSios == link_failure -> |
| 230 | timer:cancel(LoopDat#lsc_state.t1), |
| 231 | send_to(l3, out_of_service, LoopDat), |
| 232 | send_to(rc, stop, LoopDat), |
| 233 | send_to(suerm, stop, LoopDat), |
| 234 | send_to(txc, si_os, LoopDat), |
| 235 | {next_state, out_of_service, LoopDat}; |
| 236 | |
| 237 | aligned_ready(stop, LoopDat) -> |
| 238 | timer:cancel(LoopDat#lsc_state.t1), |
| 239 | send_to(rc, stop, LoopDat), |
| 240 | send_to(suerm, stop, LoopDat), |
| 241 | send_to(txc, si_os, LoopDat), |
| 242 | {next_state, out_of_service, LoopDat}; |
| 243 | |
| 244 | aligned_ready({timer_expired, t1}, LoopDat) -> |
| 245 | send_to(l3, out_of_service, LoopDat), |
| 246 | send_to(rc, stop, LoopDat), |
| 247 | send_to(suerm, stop, LoopDat), |
| 248 | send_to(txc, si_os, LoopDat), |
| 249 | {next_state, out_of_service, LoopDat}; |
| 250 | |
| 251 | aligned_ready(si_po, LoopDat) -> |
| 252 | timer:cancel(LoopDat#lsc_state.t1), |
| 253 | send_to(l3, remote_processor_outage, LoopDat), |
| 254 | send_to(poc, remote_processor_outage, LoopDat), |
| 255 | {next_state, processor_outage, LoopDat}; |
| 256 | |
| 257 | aligned_ready(fisu_msu_received, LoopDat) -> |
| 258 | send_to(l3, in_service, LoopDat), |
| 259 | timer:cancel(LoopDat#lsc_state.t1), |
| 260 | send_to(txc, msu, LoopDat), |
| 261 | {next_state, in_service, LoopDat}; |
| 262 | aligned_ready(What, LoopDat) when What == local_processor_outage; |
| 263 | What == level3_failure -> |
| 264 | send_to(poc, local_processor_outage, LoopDat), |
| 265 | send_to(txc, si_po, LoopDat), |
Harald Welte | 9ebf316 | 2012-01-20 02:02:25 +0100 | [diff] [blame] | 266 | send_to(rc, reject_msu_fisu, LoopDat), |
Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 267 | {next_state, aligned_not_ready, LoopDat}. |
| 268 | |
| 269 | |
| 270 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 271 | % STATE: aligned_not_ready |
| 272 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 273 | |
| 274 | aligned_not_ready(Err, LoopDat) when Err == link_failure; |
| 275 | Err == si_o; |
| 276 | Err == si_os -> |
| 277 | timer:cancel(LoopDat#lsc_state.t1), |
| 278 | send_to(l3, out_of_service, LoopDat), |
| 279 | send_to(l3, stop, LoopDat), |
| 280 | send_to(suerm, stop, LoopDat), |
| 281 | send_to(txc, si_os, LoopDat), |
| 282 | send_to(poc, stop, LoopDat), |
| 283 | {next_state, out_of_service, LoopDat#lsc_state{local_proc_out=0, emergency=0}}; |
| 284 | |
| 285 | aligned_not_ready(stop, LoopDat) -> |
| 286 | timer:cancel(LoopDat#lsc_state.t1), |
| 287 | send_to(l3, stop, LoopDat), |
| 288 | send_to(suerm, stop, LoopDat), |
| 289 | send_to(txc, si_os, LoopDat), |
| 290 | send_to(poc, stop, LoopDat), |
| 291 | {next_state, out_of_service, LoopDat#lsc_state{local_proc_out=0, emergency=0}}; |
| 292 | |
| 293 | aligned_not_ready({timer_expired, t1}, LoopDat) -> |
| 294 | send_to(l3, stop, LoopDat), |
| 295 | send_to(suerm, stop, LoopDat), |
| 296 | send_to(txc, si_os, LoopDat), |
| 297 | send_to(poc, stop, LoopDat), |
| 298 | {next_state, out_of_service, LoopDat#lsc_state{local_proc_out=0, emergency=0}}; |
| 299 | |
| 300 | aligned_not_ready(local_processor_recovered, LoopDat) -> |
| 301 | send_to(poc, local_processor_recovered, LoopDat), |
| 302 | send_to(txc, fisu, LoopDat), |
| 303 | send_to(rc, accept_msu_fisu, LoopDat), |
| 304 | {next_state, aligned_ready, LoopDat#lsc_state{local_proc_out=0}}; |
| 305 | |
| 306 | aligned_not_ready(fisu_msu_received, LoopDat) -> |
| 307 | send_to(l3, in_service, LoopDat), |
| 308 | timer:cancel(LoopDat#lsc_state.t1), |
| 309 | {next_state, processor_outage, LoopDat}; |
| 310 | |
| 311 | aligned_not_ready(si_po, LoopDat) -> |
| 312 | send_to(l3, remote_processor_outage, LoopDat), |
| 313 | send_to(poc, remote_processor_outage, LoopDat), |
| 314 | timer:cancel(LoopDat#lsc_state.t1), |
| 315 | {next_state, processor_outage, LoopDat}. |
| 316 | |
| 317 | |
| 318 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 319 | % STATE: in_service |
| 320 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 321 | |
| 322 | in_service(What, LoopDat) when What == link_failure; |
| 323 | What == si_o; |
| 324 | What == si_n; |
| 325 | What == si_e; |
| 326 | What == si_os -> |
| 327 | send_to(l3, out_of_service, LoopDat), |
| 328 | send_to(suerm, stop, LoopDat), |
| 329 | send_to(rc, stop, LoopDat), |
| 330 | send_to(txc, si_os, LoopDat), |
| 331 | {next_state, out_of_service, LoopDat#lsc_state{emergency=0}}; |
| 332 | |
| 333 | in_service(stop, LoopDat) -> |
| 334 | send_to(suerm, stop, LoopDat), |
| 335 | send_to(rc, stop, LoopDat), |
| 336 | send_to(txc, si_os, LoopDat), |
| 337 | {next_state, out_of_service, LoopDat#lsc_state{emergency=0}}; |
| 338 | |
| 339 | in_service(What, LoopDat) when What == local_processor_outage; |
| 340 | What == level3_failure -> |
| 341 | send_to(poc, local_processor_outage, LoopDat), |
| 342 | send_to(txc, si_po, LoopDat), |
| 343 | send_to(rc, reject_msu_fisu, LoopDat), |
| 344 | {next_state, aligned_not_ready, LoopDat#lsc_state{local_proc_out=1}}; |
| 345 | |
| 346 | in_service(si_po, LoopDat) -> |
| 347 | send_to(txc, fisu, LoopDat), |
| 348 | send_to(l3, remote_processor_outage, LoopDat), |
| 349 | send_to(poc, remote_processor_outage, LoopDat), |
| 350 | {next_state, processor_outage, LoopDat#lsc_state{proc_out=1}}. |
| 351 | |
| 352 | |
| 353 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 354 | % STATE: processor_outage |
| 355 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 356 | |
| 357 | processor_outage(retrieval_request_and_fsnc, LoopDat) -> |
| 358 | send_to(txc, retrieval_request_and_fsnc, LoopDat), |
| 359 | {next_state, processor_outage, LoopDat}; |
| 360 | |
| 361 | processor_outage(fisu_msu_received, LoopDat) -> |
| 362 | send_to(poc, remote_processor_recovered, LoopDat), |
| 363 | send_to(l3, remote_processor_recovered, LoopDat), |
| 364 | {next_state, processor_outage, LoopDat}; |
| 365 | |
| 366 | processor_outage(retrieve_bsnt, LoopDat) -> |
| 367 | send_to(rc, retrieve_bsnt, LoopDat), |
| 368 | {next_state, processor_outage, LoopDat}; |
| 369 | |
| 370 | processor_outage(What, LoopDat) when What == local_processor_outage; |
| 371 | What == level3_failure -> |
| 372 | send_to(poc, local_processor_outage, LoopDat), |
| 373 | send_to(txc, si_po, LoopDat), |
| 374 | {next_state, processor_outage, LoopDat#lsc_state{local_proc_out=1}}; |
| 375 | |
| 376 | processor_outage(si_po, LoopDat) -> |
| 377 | send_to(l3, remote_processor_outage, LoopDat), |
| 378 | send_to(poc, remote_processor_outage, LoopDat), |
| 379 | {next_state, processor_outage, LoopDat#lsc_state{proc_out=1}}; |
| 380 | |
| 381 | processor_outage(local_processor_recovered, LoopDat) -> |
| 382 | send_to(poc, local_processor_recovered, LoopDat), |
| 383 | send_to(rc, retrieve_fsnx, LoopDat), |
| 384 | send_to(txc, fisu, LoopDat), |
| 385 | {next_state, processor_outage, LoopDat}; |
| 386 | |
| 387 | processor_outage(flush_buffers, LoopDat) -> |
| 388 | send_to(txc, flush_buffers, LoopDat), |
| 389 | % FIXME: mark L3 ind recv |
| 390 | {next_state, processor_outage, LoopDat}; |
| 391 | |
| 392 | processor_outage(no_processor_outage, LoopDat) -> |
| 393 | % FIXME: check L3 ind |
| 394 | send_to(txc, msu, LoopDat), |
| 395 | send_to(rc, accept_msu_fisu, LoopDat), |
| 396 | {next_state, in_service, LoopDat#lsc_state{local_proc_out=0, proc_out=0}}; |
| 397 | |
| 398 | processor_outage(What, LoopDat) when What == link_failure; |
| 399 | What == si_o; |
| 400 | What == si_n; |
| 401 | What == si_e; |
| 402 | What == si_os -> |
| 403 | send_to(l3, out_of_service, LoopDat), |
| 404 | send_to(suerm, stop, LoopDat), |
| 405 | send_to(rc, stop, LoopDat), |
| 406 | send_to(poc, stop, LoopDat), |
| 407 | send_to(txc, si_os, LoopDat), |
| 408 | {next_state, out_of_service, LoopDat#lsc_state{emergency=0, local_proc_out=0}}; |
| 409 | |
| 410 | processor_outage(stop, LoopDat) -> |
| 411 | send_to(suerm, stop, LoopDat), |
| 412 | send_to(rc, stop, LoopDat), |
| 413 | send_to(poc, stop, LoopDat), |
| 414 | send_to(txc, si_os, LoopDat), |
| 415 | {next_state, out_of_service, LoopDat#lsc_state{emergency=0, local_proc_out=0}}. |
| 416 | |
| 417 | |
| 418 | |
| 419 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 420 | % helper functions |
| 421 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 422 | send_to(txc, What, #lsc_state{txc_pid = Txc}) -> |
| 423 | Txc ! {lsc_txc, What}; |
| 424 | send_to(iac, What, #lsc_state{iac_pid = Iac}) -> |
| 425 | gen_fsm:send_event(Iac, What); |
Harald Welte | 9ebf316 | 2012-01-20 02:02:25 +0100 | [diff] [blame] | 426 | send_to(rc, What, #lsc_state{rc_pid = Rc}) -> |
| 427 | Rc ! {lsc_rc, What}; |
Harald Welte | b668988 | 2012-01-16 16:00:45 +0100 | [diff] [blame] | 428 | send_to(Who, What, _LoopDat) -> |
| 429 | io:format("Not sending LSC -> ~p: ~p~n", [Who, What]). |
| 430 | |