Harald Welte | 9ebf316 | 2012-01-20 02:02:25 +0100 | [diff] [blame] | 1 | % M3UA ASP xua_asp_fsm callback |
| 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 | 9ebf316 | 2012-01-20 02:02:25 +0100 | [diff] [blame] | 33 | |
| 34 | -module(m3ua_asp). |
| 35 | -author('Harald Welte <laforge@gnumonks.org>'). |
| 36 | -behaviour(xua_asp_fsm). |
| 37 | |
| 38 | -include("osmo_util.hrl"). |
| 39 | -include("m3ua.hrl"). |
| 40 | |
| 41 | -export([init/1]). |
| 42 | |
| 43 | -export([gen_xua_msg/3, asp_down/3, asp_inactive/3, asp_active/3]). |
| 44 | |
| 45 | init([]) -> |
| 46 | {ok, we_have_no_state}. |
| 47 | |
| 48 | gen_xua_msg(MsgClass, MsgType, Params) -> |
| 49 | #m3ua_msg{version = 1, msg_class = MsgClass, msg_type = MsgType, payload = Params}. |
| 50 | |
| 51 | asp_down(#m3ua_msg{version = 1, msg_class = MsgClass, msg_type = MsgType}, |
| 52 | LoopDat, Mld) when MsgClass == ?M3UA_MSGC_ASPSM; MsgClass == ?M3UA_MSGC_ASPTM -> |
| 53 | % convert from M3UA to xua_msg and call into master module |
| 54 | xua_asp_fsm:asp_down({xua_msg, MsgClass, MsgType}, Mld); |
| 55 | asp_down(M3uaMsg, LoopDat, Mld) when is_record(M3uaMsg, m3ua_msg) -> |
| 56 | rx_m3ua(M3uaMsg, asp_down, Mld). |
| 57 | |
| 58 | asp_inactive(#m3ua_msg{version = 1, msg_class = MsgClass, msg_type = MsgType}, |
| 59 | LoopDat, Mld) when MsgClass == ?M3UA_MSGC_ASPSM; MsgClass == ?M3UA_MSGC_ASPTM -> |
| 60 | % convert from M3UA to xua_msg and call into master module |
| 61 | xua_asp_fsm:asp_inactive({xua_msg, MsgClass, MsgType}, Mld); |
| 62 | asp_inactive(M3uaMsg, LoopDat, Mld) when is_record(M3uaMsg, m3ua_msg) -> |
| 63 | rx_m3ua(M3uaMsg, asp_inactive, Mld). |
| 64 | |
| 65 | asp_active(#m3ua_msg{version = 1, msg_class = MsgClass, msg_type = MsgType}, |
| 66 | LoopDat, Mld) when MsgClass == ?M3UA_MSGC_ASPSM; MsgClass == ?M3UA_MSGC_ASPTM -> |
| 67 | % convert from M3UA to xua_msg and call into master module |
| 68 | xua_asp_fsm:asp_active({xua_msg, MsgClass, MsgType}, Mld); |
| 69 | asp_active(M3uaMsg, LoopDat, Mld) when is_record(M3uaMsg, m3ua_msg) -> |
| 70 | rx_m3ua(M3uaMsg, asp_active, Mld). |
| 71 | |
| 72 | |
| 73 | |
| 74 | |
| 75 | |
| 76 | rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_MGMT, |
| 77 | msg_type = ?M3UA_MSGT_MGMT_NTFY}, State, LoopDat) -> |
| 78 | xua_asp_fsm:send_prim_to_user(LoopDat, osmo_util:make_prim('M','NOTIFY',indication,[Msg])), |
| 79 | {next_state, State, LoopDat}; |
| 80 | |
| 81 | rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_ASPSM, |
| 82 | msg_type = ?M3UA_MSGT_ASPSM_BEAT}, State, LoopDat) -> |
| 83 | % Send BEAT_ACK using the same payload as the BEAT msg |
| 84 | xua_asp_fsm:send_sctp_to_peer(LoopDat, Msg#m3ua_msg{msg_type = ?M3UA_MSGT_ASPSM_BEAT_ACK}), |
| 85 | {next_state, State, LoopDat}; |
| 86 | |
| 87 | rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_MGMT, |
| 88 | msg_type = ?M3UA_MSGT_MGMT_ERR}, State, LoopDat) -> |
| 89 | xua_asp_fsm:send_prim_to_user(LoopDat, osmo_util:make_prim('M','ERROR',indication,[Msg])), |
| 90 | {next_state, State, LoopDat}; |
| 91 | |
| 92 | rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_SSNM, |
| 93 | msg_type = MsgType, payload = Params}, State, LoopDat) -> |
| 94 | % transform to classic MTP primitive and send up to the user |
| 95 | Mtp = map_ssnm_to_mtp_prim(MsgType), |
| 96 | xua_asp_fsm:send_prim_to_user(LoopDat, Mtp), |
| 97 | {next_state, State, LoopDat}; |
| 98 | |
| 99 | rx_m3ua(Msg = #m3ua_msg{}, State, LoopDat) -> |
| 100 | io:format("M3UA Unknown messge ~p in state ~p~n", [Msg, State]), |
| 101 | {next_state, State, LoopDat}. |
| 102 | |
| 103 | % Transform the M3UA SSNM messages into classic MTP primitives |
| 104 | map_ssnm_to_mtp_prim(MsgType) -> |
| 105 | Mtp = #primitive{subsystem = 'MTP', spec_name = indication}, |
| 106 | case MsgType of |
| 107 | ?M3UA_MSGT_SSNM_DUNA -> Mtp#primitive{gen_name = 'PAUSE'}; |
| 108 | ?M3UA_MSGT_SSNM_DAVA -> Mtp#primitive{gen_name = 'RESUME'}; |
| 109 | ?M3UA_MSGT_SSNM_SCON -> Mtp#primitive{gen_name = 'STATUS'}; |
| 110 | ?M3UA_MSGT_SSNM_DUPU -> Mtp#primitive{gen_name = 'STATUS'} |
| 111 | end. |