Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 1 | % M3UA in accordance with RFC4666 (http://tools.ietf.org/html/rfc4666) |
| 2 | |
| 3 | % (C) 2011 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 | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 33 | |
| 34 | -module(m3ua_core). |
| 35 | -author('Harald Welte <laforge@gnumonks.org>'). |
Harald Welte | ead1ba1 | 2011-04-15 10:20:04 +0200 | [diff] [blame] | 36 | -behaviour(gen_fsm). |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 37 | |
| 38 | -include_lib("kernel/include/inet_sctp.hrl"). |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 39 | -include("osmo_util.hrl"). |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 40 | -include("sccp.hrl"). |
| 41 | -include("m3ua.hrl"). |
| 42 | |
| 43 | -export([start_link/1]). |
| 44 | |
Harald Welte | b2d3abf | 2011-04-04 11:26:11 +0200 | [diff] [blame] | 45 | -export([init/1, terminate/3, code_change/4, handle_event/3, handle_info/3]). |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 46 | |
| 47 | % FSM states: |
| 48 | -export([asp_down/2, asp_inactive/2, asp_active/2]). |
| 49 | |
| 50 | -define(T_ACK_TIMEOUT, 2*60*100). |
| 51 | |
| 52 | % Loop Data |
| 53 | -record(m3ua_state, { |
| 54 | role, % asp | sgp |
| 55 | asp_state, % down, inactive, active |
| 56 | t_ack, |
Harald Welte | cb1c068 | 2011-04-14 21:56:26 +0200 | [diff] [blame] | 57 | user_fun, |
| 58 | user_args, |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 59 | sctp_remote_ip, |
| 60 | sctp_remote_port, |
| 61 | sctp_sock, |
| 62 | sctp_assoc_id |
| 63 | }). |
| 64 | |
| 65 | start_link(InitOpts) -> |
| 66 | gen_fsm:start_link(?MODULE, InitOpts, [{debug, [trace]}]). |
| 67 | |
| 68 | reconnect_sctp(L = #m3ua_state{sctp_remote_ip = Ip, sctp_remote_port = Port, sctp_sock = Sock}) -> |
Harald Welte | 231ae0b | 2012-04-01 20:13:23 +0200 | [diff] [blame] | 69 | timer:sleep(1*1000), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 70 | io:format("SCTP Reconnect ~p:~p~n", [Ip, Port]), |
Harald Welte | 8a0ab00 | 2011-04-03 22:16:12 +0200 | [diff] [blame] | 71 | InitMsg = #sctp_initmsg{num_ostreams = 2, max_instreams = 2}, |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 72 | case gen_sctp:connect(Sock, Ip, Port, [{active, once}, {reuseaddr, true}, |
| 73 | {sctp_initmsg, InitMsg}]) of |
| 74 | {ok, Assoc} -> |
Harald Welte | 9544cab | 2011-04-04 17:03:23 +0200 | [diff] [blame] | 75 | send_prim_to_user(L, osmo_util:make_prim('M','SCTP_ESTABLISH',confirm)), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 76 | L#m3ua_state{sctp_assoc_id = Assoc#sctp_assoc_change.assoc_id}; |
| 77 | {error, Error } -> |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 78 | io:format("SCTP Error ~p, reconnecting~n", [Error]), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 79 | reconnect_sctp(L) |
| 80 | end. |
| 81 | |
Harald Welte | 48c07f0 | 2013-09-08 22:22:01 +0200 | [diff] [blame^] | 82 | build_openopt({sctp_local_port, Port}) -> |
| 83 | {port, Port}; |
| 84 | build_openopt({sctp_local_ip, undefined}) -> |
| 85 | []; |
| 86 | build_openopt({sctp_local_ip, Ip}) -> |
| 87 | {ip, Ip}; |
| 88 | build_openopt(_) -> |
| 89 | []. |
| 90 | build_openopts(PropList) -> |
| 91 | [{active, once}, {reuseaddr, true}] ++ |
| 92 | lists:flatten(lists:map(fun build_openopt/1, PropList)). |
| 93 | |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 94 | init(InitOpts) -> |
Harald Welte | 48c07f0 | 2013-09-08 22:22:01 +0200 | [diff] [blame^] | 95 | {ok, SctpSock} = gen_sctp:open(build_openopts(InitOpts)), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 96 | LoopDat = #m3ua_state{role = asp, sctp_sock = SctpSock, |
Harald Welte | cb1c068 | 2011-04-14 21:56:26 +0200 | [diff] [blame] | 97 | user_fun = proplists:get_value(user_fun, InitOpts), |
| 98 | user_args = proplists:get_value(user_args, InitOpts), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 99 | sctp_remote_ip = proplists:get_value(sctp_remote_ip, InitOpts), |
Harald Welte | 48c07f0 | 2013-09-08 22:22:01 +0200 | [diff] [blame^] | 100 | sctp_remote_port = proplists:get_value(sctp_remote_port, InitOpts)}, |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 101 | LoopDat2 = reconnect_sctp(LoopDat), |
| 102 | {ok, asp_down, LoopDat2}. |
| 103 | |
Harald Welte | b2d3abf | 2011-04-04 11:26:11 +0200 | [diff] [blame] | 104 | terminate(Reason, _State, LoopDat) -> |
| 105 | io:format("Terminating ~p (Reason: ~p)~n", [?MODULE, Reason]), |
| 106 | gen_sctp:close(LoopDat#m3ua_state.sctp_sock). |
| 107 | |
| 108 | code_change(_OldVsn, StateName, StateData, _Extra) -> |
| 109 | {ok, StateName, StateData}. |
| 110 | |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 111 | % Helper function to send data to the SCTP peer |
Harald Welte | cb1c068 | 2011-04-14 21:56:26 +0200 | [diff] [blame] | 112 | send_sctp_to_peer(LoopDat, PktData, StreamId) when is_binary(PktData) -> |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 113 | #m3ua_state{sctp_sock = Sock, sctp_assoc_id = Assoc} = LoopDat, |
Harald Welte | cb1c068 | 2011-04-14 21:56:26 +0200 | [diff] [blame] | 114 | SndRcvInfo = #sctp_sndrcvinfo{assoc_id = Assoc, ppid = 3, stream = StreamId}, |
| 115 | gen_sctp:send(Sock, SndRcvInfo, PktData). |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 116 | |
| 117 | % same as above, but for un-encoded #m3ua_msg{} |
| 118 | send_sctp_to_peer(LoopDat, M3uaMsg) when is_record(M3uaMsg, m3ua_msg) -> |
| 119 | MsgBin = m3ua_codec:encode_m3ua_msg(M3uaMsg), |
Harald Welte | cb1c068 | 2011-04-14 21:56:26 +0200 | [diff] [blame] | 120 | StreamId = sctp_stream_for_m3ua(M3uaMsg), |
| 121 | send_sctp_to_peer(LoopDat, MsgBin, StreamId). |
| 122 | |
| 123 | % resolve the Stream ID depending on the m3ua_msg: 0 == management, 1 == trafic |
| 124 | sctp_stream_for_m3ua(#m3ua_msg{msg_class = Class}) when |
| 125 | Class == ?M3UA_MSGC_TRANSFER -> |
| 126 | 1; |
| 127 | sctp_stream_for_m3ua(#m3ua_msg{}) -> |
| 128 | 0. |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 129 | |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 130 | |
| 131 | send_prim_to_user(LoopDat, Prim) when is_record(LoopDat, m3ua_state), is_record(Prim, primitive) -> |
Harald Welte | cb1c068 | 2011-04-14 21:56:26 +0200 | [diff] [blame] | 132 | #m3ua_state{user_fun = Fun, user_args = Args} = LoopDat, |
| 133 | Fun(Prim, Args). |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 134 | |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 135 | % helper to send one of the up/down/act/inact management messages + start timer |
| 136 | send_msg_start_tack(LoopDat, State, MsgClass, MsgType, Params) -> |
| 137 | % generate and send the respective message |
| 138 | Msg = #m3ua_msg{version = 1, msg_class = MsgClass, msg_type = MsgType, payload = Params}, |
| 139 | send_sctp_to_peer(LoopDat, Msg), |
| 140 | % start T(ack) timer and wait for ASP_UP_ACK |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 141 | timer:cancel(LoopDat#m3ua_state.t_ack), |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 142 | {ok, Tack} = timer:apply_after(?T_ACK_TIMEOUT, gen_fsm, send_event, |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 143 | [self(), {timer_expired, t_ack, {MsgClass, MsgType, Params}}]), |
| 144 | {next_state, State, LoopDat#m3ua_state{t_ack = Tack}}. |
| 145 | |
| 146 | |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 147 | |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 148 | handle_event(Event, State, LoopDat) -> |
| 149 | io:format("Unknown Event ~p in state ~p~n", [Event, State]), |
| 150 | {next_state, State, LoopDat}. |
| 151 | |
| 152 | |
| 153 | |
| 154 | handle_info({sctp, Socket, _RemoteIp, _RemotePort, {ANC, SAC}}, |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 155 | _State, LoopDat) when is_record(SAC, sctp_assoc_change) -> |
| 156 | io:format("SCTP Assoc Change ~p ~p~n", [ANC, SAC]), |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 157 | #sctp_assoc_change{state = SacState, outbound_streams = _OutStreams, |
Harald Welte | b2d3abf | 2011-04-04 11:26:11 +0200 | [diff] [blame] | 158 | inbound_streams = _InStreams, assoc_id = _AssocId} = SAC, |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 159 | case SacState of |
| 160 | comm_up -> |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 161 | % primmitive to the user |
| 162 | send_prim_to_user(LoopDat, osmo_util:make_prim('M','SCTP_ESTABLISH',confirm)), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 163 | LoopDat2 = LoopDat; |
| 164 | comm_lost -> |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 165 | send_prim_to_user(LoopDat, osmo_util:make_prim('M','SCTP_RELEASE',indication)), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 166 | LoopDat2 = reconnect_sctp(LoopDat); |
Harald Welte | a0d2d96 | 2013-06-18 18:04:18 +0200 | [diff] [blame] | 167 | shutdown_comp -> |
| 168 | send_prim_to_user(LoopDat, osmo_util:make_prim('M','SCTP_RELEASE',indication)), |
| 169 | LoopDat2 = reconnect_sctp(LoopDat); |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 170 | addr_unreachable -> |
| 171 | LoopDat2 = reconnect_sctp(LoopDat) |
| 172 | end, |
| 173 | inet:setopts(Socket, [{active, once}]), |
| 174 | {next_state, asp_down, LoopDat2}; |
| 175 | |
Harald Welte | a5dfd5b | 2013-07-15 11:27:10 +0200 | [diff] [blame] | 176 | handle_info({sctp, Socket, _RemoteIp, _RemotePort, {ANC, SPC}}, |
| 177 | State, LoopDat) when is_record(SPC, sctp_paddr_change) -> |
| 178 | io:format("SCTP Peer address change ~p ~p~n", [ANC, SPC]), |
| 179 | {NewState, LoopDat2} = case SPC#sctp_paddr_change.state of |
| 180 | addr_available -> |
| 181 | % we don't care |
| 182 | {State, LoopDat}; |
| 183 | addr_unreachable -> |
| 184 | send_prim_to_user(LoopDat, osmo_util:make_prim('M','SCTP_RELEASE',indication)), |
| 185 | {asp_down, reconnect_sctp(LoopDat)}; |
| 186 | addr_removed -> |
| 187 | % FIXME: what if the last one is removed |
| 188 | {State, LoopDat}; |
| 189 | addr_added -> |
| 190 | % we don't care |
| 191 | {State, LoopDat}; |
| 192 | addr_made_prim -> |
| 193 | % FIXME: do we need to change remote_ip in our LoopDat? |
| 194 | {State, LoopDat} |
| 195 | end, |
| 196 | inet:setopts(Socket, [{active, once}]), |
| 197 | {next_state, NewState, LoopDat2}; |
| 198 | |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 199 | handle_info({sctp, Socket, RemoteIp, RemotePort, {[Anc], Data}}, State, LoopDat) -> |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 200 | io:format("SCTP rx data: ~p ~p~n", [Anc, Data]), |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 201 | % process incoming SCTP data |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 202 | if Socket == LoopDat#m3ua_state.sctp_sock, |
| 203 | RemoteIp == LoopDat#m3ua_state.sctp_remote_ip, |
| 204 | RemotePort == LoopDat#m3ua_state.sctp_remote_port, |
| 205 | 3 == Anc#sctp_sndrcvinfo.ppid -> |
| 206 | Ret = rx_sctp(Anc, Data, State, LoopDat); |
| 207 | true -> |
| 208 | io:format("unknown SCTP: ~p ~p~n", [Anc, Data]), |
| 209 | Ret = {next_state, State, LoopDat} |
| 210 | end, |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 211 | inet:setopts(Socket, [{active, once}]), |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 212 | Ret; |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 213 | |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 214 | handle_info({sctp, Socket, RemoteIp, RemotePort, {_Anc, Data}}, _State, LoopDat) |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 215 | when is_record(Data, sctp_shutdown_event) -> |
| 216 | io:format("SCTP remote ~p:~p shutdown~n", [RemoteIp, RemotePort]), |
| 217 | inet:setopts(Socket, [{active, once}]), |
| 218 | {next_state, asp_down, LoopDat}. |
| 219 | |
| 220 | |
| 221 | |
| 222 | asp_down(#primitive{subsystem = 'M', gen_name = 'ASP_UP', |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 223 | spec_name = request, parameters = _Params}, LoopDat) -> |
Harald Welte | b647370 | 2011-04-14 22:06:42 +0200 | [diff] [blame] | 224 | % M-ASP_UP.req from user, generate message and send to remote peer |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 225 | send_msg_start_tack(LoopDat, asp_down, ?M3UA_MSGC_ASPSM, ?M3UA_MSGT_ASPSM_ASPUP, []); |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 226 | asp_down({timer_expired, t_ack, {?M3UA_MSGC_ASPSM, ?M3UA_MSGT_ASPSM_ASPUP, Params}}, LoopDat) -> |
| 227 | send_msg_start_tack(LoopDat, asp_down, ?M3UA_MSGC_ASPSM, ?M3UA_MSGT_ASPSM_ASPUP, Params); |
| 228 | |
| 229 | asp_down(#m3ua_msg{msg_class = ?M3UA_MSGC_ASPSM, |
| 230 | msg_type = ?M3UA_MSGT_ASPSM_ASPUP_ACK}, LoopDat) -> |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 231 | timer:cancel(LoopDat#m3ua_state.t_ack), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 232 | % transition into ASP_INACTIVE |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 233 | send_prim_to_user(LoopDat, osmo_util:make_prim('M','ASP_UP',confirm)), |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 234 | {next_state, asp_inactive, LoopDat}; |
| 235 | |
| 236 | asp_down(M3uaMsg, LoopDat) when is_record(M3uaMsg, m3ua_msg) -> |
| 237 | rx_m3ua(M3uaMsg, asp_down, LoopDat). |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 238 | |
| 239 | |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 240 | asp_inactive(#primitive{subsystem = 'M', gen_name = 'ASP_ACTIVE', |
| 241 | spec_name = request, parameters = _Params}, LoopDat) -> |
Harald Welte | b647370 | 2011-04-14 22:06:42 +0200 | [diff] [blame] | 242 | % M-ASP_ACTIVE.req from user, generate message and send to remote peer |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 243 | send_msg_start_tack(LoopDat, asp_inactive, ?M3UA_MSGC_ASPTM, ?M3UA_MSGT_ASPTM_ASPAC, |
| 244 | [{?M3UA_IEI_TRAF_MODE_TYPE, <<0,0,0,1>>}]); |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 245 | |
| 246 | asp_inactive({timer_expired, t_ack, {?M3UA_MSGC_ASPTM, ?M3UA_MSGT_ASPTM_ASPAC, Params}}, LoopDat) -> |
| 247 | send_msg_start_tack(LoopDat, asp_inactive, ?M3UA_MSGC_ASPTM, ?M3UA_MSGT_ASPTM_ASPAC, Params); |
| 248 | |
| 249 | asp_inactive(#primitive{subsystem = 'M', gen_name = 'ASP_DOWN', |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 250 | spec_name = request, parameters = _Params}, LoopDat) -> |
Harald Welte | b647370 | 2011-04-14 22:06:42 +0200 | [diff] [blame] | 251 | % M-ASP_DOWN.req from user, generate message and send to remote peer |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 252 | send_msg_start_tack(LoopDat, asp_inactive, ?M3UA_MSGC_ASPSM, ?M3UA_MSGT_ASPSM_ASPDN, []); |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 253 | |
| 254 | asp_inactive({timer_expired, t_ack, {?M3UA_MSGC_ASPSM, ?M3UA_MSGT_ASPSM_ASPDN, Params}}, LoopDat) -> |
| 255 | send_msg_start_tack(LoopDat, asp_inactive, ?M3UA_MSGC_ASPSM, ?M3UA_MSGT_ASPSM_ASPDN, Params); |
| 256 | |
| 257 | asp_inactive(#m3ua_msg{msg_class = ?M3UA_MSGC_ASPTM, |
| 258 | msg_type = ?M3UA_MSGT_ASPTM_ASPAC_ACK}, LoopDat) -> |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 259 | timer:cancel(LoopDat#m3ua_state.t_ack), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 260 | % transition into ASP_ACTIVE |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 261 | % signal this to the user |
| 262 | send_prim_to_user(LoopDat, osmo_util:make_prim('M','ASP_ACTIVE',confirm)), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 263 | {next_state, asp_active, LoopDat}; |
| 264 | |
| 265 | asp_inactive(#m3ua_msg{msg_class = ?M3UA_MSGC_ASPSM, |
| 266 | msg_type = ?M3UA_MSGT_ASPSM_ASPDN_ACK}, LoopDat) -> |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 267 | timer:cancel(LoopDat#m3ua_state.t_ack), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 268 | % transition into ASP_DOWN |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 269 | % signal this to the user |
| 270 | send_prim_to_user(LoopDat, osmo_util:make_prim('M','ASP_DOWN',confirm)), |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 271 | {next_state, asp_down, LoopDat}; |
| 272 | |
| 273 | asp_inactive(M3uaMsg, LoopDat) when is_record(M3uaMsg, m3ua_msg) -> |
| 274 | rx_m3ua(M3uaMsg, asp_inactive, LoopDat). |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 275 | |
| 276 | |
| 277 | |
| 278 | asp_active(#m3ua_msg{msg_class = ?M3UA_MSGC_ASPSM, |
| 279 | msg_type = ?M3UA_MSGT_ASPSM_ASPDN_ACK}, LoopDat) -> |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 280 | timer:cancel(LoopDat#m3ua_state.t_ack), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 281 | % transition into ASP_DOWN |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 282 | % signal this to the user |
| 283 | send_prim_to_user(LoopDat, osmo_util:make_prim('M','ASP_DOWN',confirm)), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 284 | {next_state, asp_down, LoopDat}; |
| 285 | |
| 286 | asp_active(#m3ua_msg{msg_class = ?M3UA_MSGC_ASPTM, |
| 287 | msg_type = ?M3UA_MSGT_ASPTM_ASPIA_ACK}, LoopDat) -> |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 288 | timer:cancel(LoopDat#m3ua_state.t_ack), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 289 | % transition into ASP_INACTIVE |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 290 | % signal this to the user |
| 291 | send_prim_to_user(LoopDat, osmo_util:make_prim('M','ASP_INACTIVE',confirm)), |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 292 | {next_state, asp_inactive, LoopDat}; |
| 293 | |
| 294 | asp_active(#primitive{subsystem = 'M', gen_name = 'ASP_DOWN', |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 295 | spec_name = request, parameters = _Params}, LoopDat) -> |
Harald Welte | b647370 | 2011-04-14 22:06:42 +0200 | [diff] [blame] | 296 | % M-ASP_DOWN.req from user, generate message and send to remote peer |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 297 | send_msg_start_tack(LoopDat, asp_active, ?M3UA_MSGC_ASPSM, ?M3UA_MSGT_ASPSM_ASPDN, []); |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 298 | |
| 299 | asp_active({timer_expired, t_ack, {?M3UA_MSGC_ASPSM, ?M3UA_MSGT_ASPSM_ASPDN, Params}}, LoopDat) -> |
| 300 | send_msg_start_tack(LoopDat, asp_active, ?M3UA_MSGC_ASPSM, ?M3UA_MSGT_ASPSM_ASPDN, Params); |
| 301 | |
| 302 | asp_active(#primitive{subsystem = 'M', gen_name = 'ASP_INACTIVE', |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 303 | spec_name = request, parameters = _Params}, LoopDat) -> |
Harald Welte | b647370 | 2011-04-14 22:06:42 +0200 | [diff] [blame] | 304 | % M-ASP_INACTIVE.req from user, generate message and send to remote peer |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 305 | send_msg_start_tack(LoopDat, asp_active, ?M3UA_MSGC_ASPTM, ?M3UA_MSGT_ASPTM_ASPIA, []); |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 306 | |
| 307 | asp_active({timer_expired, t_ack, {?M3UA_MSGC_ASPTM, ?M3UA_MSGT_ASPTM_ASPIA, Params}}, LoopDat) -> |
| 308 | send_msg_start_tack(LoopDat, asp_active, ?M3UA_MSGC_ASPTM, ?M3UA_MSGT_ASPTM_ASPIA, Params); |
| 309 | |
| 310 | asp_active(#primitive{subsystem = 'MTP', gen_name = 'TRANSFER', |
| 311 | spec_name = request, parameters = Params}, LoopDat) -> |
Harald Welte | b647370 | 2011-04-14 22:06:42 +0200 | [diff] [blame] | 312 | % MTP-TRANSFER.req from user app: Send message to remote peer |
Harald Welte | 3bf7cb6 | 2011-04-03 00:25:34 +0200 | [diff] [blame] | 313 | OptList = [{?M3UA_IEI_PROTOCOL_DATA, Params}], |
| 314 | Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_TRANSFER, |
| 315 | msg_type = ?M3UA_MSGT_XFR_DATA, |
| 316 | payload = OptList}, |
| 317 | send_sctp_to_peer(LoopDat, Msg), |
| 318 | {next_state, asp_active, LoopDat}; |
| 319 | asp_active(#m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_TRANSFER, |
| 320 | msg_type = ?M3UA_MSGT_XFR_DATA, payload = Params}, LoopDat) -> |
Harald Welte | b647370 | 2011-04-14 22:06:42 +0200 | [diff] [blame] | 321 | % Data transfer from remote entity: Send MTP-TRANSFER.ind primitive to the user |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 322 | Mtp3 = proplists:get_value(?M3UA_IEI_PROTOCOL_DATA, Params), |
Harald Welte | 7dadde8 | 2011-10-19 13:40:39 +0200 | [diff] [blame] | 323 | send_prim_to_user(LoopDat, osmo_util:make_prim('MTP','TRANSFER',indication,Mtp3)), |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 324 | {next_state, asp_active, LoopDat}; |
| 325 | asp_active(#m3ua_msg{msg_class = ?M3UA_MSGC_ASPTM, |
| 326 | msg_type = ?M3UA_MSGT_ASPTM_ASPIA_ACK}, LoopDat) -> |
| 327 | timer:cancel(LoopDat#m3ua_state.t_ack), |
| 328 | % transition to ASP_INACTIVE |
| 329 | {next_state, asp_inactive, LoopDat}; |
| 330 | |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 331 | asp_active(M3uaMsg, LoopDat) when is_record(M3uaMsg, m3ua_msg) -> |
| 332 | rx_m3ua(M3uaMsg, asp_active, LoopDat). |
| 333 | |
| 334 | |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 335 | |
Harald Welte | b2d3abf | 2011-04-04 11:26:11 +0200 | [diff] [blame] | 336 | rx_sctp(_Anc, Data, State, LoopDat) -> |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 337 | M3uaMsg = m3ua_codec:parse_m3ua_msg(Data), |
| 338 | gen_fsm:send_event(self(), M3uaMsg), |
| 339 | {next_state, State, LoopDat}. |
| 340 | |
| 341 | |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 342 | |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 343 | rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_MGMT, |
| 344 | msg_type = ?M3UA_MSGT_MGMT_NTFY}, State, LoopDat) -> |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 345 | send_prim_to_user(LoopDat, osmo_util:make_prim('M','NOTIFY',indication,[Msg])), |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 346 | {next_state, State, LoopDat}; |
| 347 | |
| 348 | rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_ASPSM, |
| 349 | msg_type = ?M3UA_MSGT_ASPSM_BEAT}, State, LoopDat) -> |
| 350 | % Send BEAT_ACK using the same payload as the BEAT msg |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 351 | send_sctp_to_peer(LoopDat, Msg#m3ua_msg{msg_type = ?M3UA_MSGT_ASPSM_BEAT_ACK}), |
| 352 | {next_state, State, LoopDat}; |
| 353 | |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 354 | rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_MGMT, |
| 355 | msg_type = ?M3UA_MSGT_MGMT_ERR}, State, LoopDat) -> |
| 356 | send_prim_to_user(LoopDat, osmo_util:make_prim('M','ERROR',indication,[Msg])), |
| 357 | {next_state, State, LoopDat}; |
| 358 | |
| 359 | rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_SSNM, |
| 360 | msg_type = MsgType, payload = Params}, State, LoopDat) -> |
Harald Welte | b647370 | 2011-04-14 22:06:42 +0200 | [diff] [blame] | 361 | % transform to classic MTP primitive and send up to the user |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 362 | Mtp = map_ssnm_to_mtp_prim(MsgType), |
| 363 | send_prim_to_user(LoopDat, Mtp), |
| 364 | {next_state, State, LoopDat}; |
| 365 | |
Harald Welte | 6fc5b29 | 2011-04-04 10:38:30 +0200 | [diff] [blame] | 366 | rx_m3ua(Msg = #m3ua_msg{}, State, LoopDat) -> |
| 367 | io:format("M3UA Unknown messge ~p in state ~p~n", [Msg, State]), |
| 368 | {next_state, State, LoopDat}. |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 369 | |
Harald Welte | b647370 | 2011-04-14 22:06:42 +0200 | [diff] [blame] | 370 | % Transform the M3UA SSNM messages into classic MTP primitives |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 371 | map_ssnm_to_mtp_prim(MsgType) -> |
Harald Welte | 10d77cd | 2011-11-04 22:28:21 +0100 | [diff] [blame] | 372 | Mtp = #primitive{subsystem = 'MTP', spec_name = indication}, |
Harald Welte | e393ea8 | 2011-04-04 16:00:06 +0200 | [diff] [blame] | 373 | case MsgType of |
| 374 | ?M3UA_MSGT_SSNM_DUNA -> Mtp#primitive{gen_name = 'PAUSE'}; |
| 375 | ?M3UA_MSGT_SSNM_DAVA -> Mtp#primitive{gen_name = 'RESUME'}; |
| 376 | ?M3UA_MSGT_SSNM_SCON -> Mtp#primitive{gen_name = 'STATUS'}; |
| 377 | ?M3UA_MSGT_SSNM_DUPU -> Mtp#primitive{gen_name = 'STATUS'} |
| 378 | end. |