From 9ebf3164f627ebe29d65ae1fdfb37de753c627fc Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Fri, 20 Jan 2012 02:02:25 +0100 Subject: M2PA: implement RC 'fiso_msu_accepted' flag This flag prevents the accepting of FISU or MSU inside RC, ensuring that those events cannot enter LSC/IAC during times where they are invalid. --- src/m3ua_asp.erl | 97 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100644 src/m3ua_asp.erl (limited to 'src/m3ua_asp.erl') diff --git a/src/m3ua_asp.erl b/src/m3ua_asp.erl new file mode 100644 index 0000000..c459d4a --- /dev/null +++ b/src/m3ua_asp.erl @@ -0,0 +1,97 @@ +% M3UA ASP xua_asp_fsm callback + +% (C) 2011-2012 by Harald Welte +% +% All Rights Reserved +% +% This program is free software; you can redistribute it and/or modify +% it under the terms of the GNU Affero General Public License as +% published by the Free Software Foundation; either version 3 of the +% License, or (at your option) any later version. +% +% This program is distributed in the hope that it will be useful, +% but WITHOUT ANY WARRANTY; without even the implied warranty of +% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +% GNU General Public License for more details. +% +% You should have received a copy of the GNU Affero General Public License +% along with this program. If not, see . + +-module(m3ua_asp). +-author('Harald Welte '). +-behaviour(xua_asp_fsm). + +-include("osmo_util.hrl"). +-include("m3ua.hrl"). + +-export([init/1]). + +-export([gen_xua_msg/3, asp_down/3, asp_inactive/3, asp_active/3]). + +init([]) -> + {ok, we_have_no_state}. + +gen_xua_msg(MsgClass, MsgType, Params) -> + #m3ua_msg{version = 1, msg_class = MsgClass, msg_type = MsgType, payload = Params}. + +asp_down(#m3ua_msg{version = 1, msg_class = MsgClass, msg_type = MsgType}, + LoopDat, Mld) when MsgClass == ?M3UA_MSGC_ASPSM; MsgClass == ?M3UA_MSGC_ASPTM -> + % convert from M3UA to xua_msg and call into master module + xua_asp_fsm:asp_down({xua_msg, MsgClass, MsgType}, Mld); +asp_down(M3uaMsg, LoopDat, Mld) when is_record(M3uaMsg, m3ua_msg) -> + rx_m3ua(M3uaMsg, asp_down, Mld). + +asp_inactive(#m3ua_msg{version = 1, msg_class = MsgClass, msg_type = MsgType}, + LoopDat, Mld) when MsgClass == ?M3UA_MSGC_ASPSM; MsgClass == ?M3UA_MSGC_ASPTM -> + % convert from M3UA to xua_msg and call into master module + xua_asp_fsm:asp_inactive({xua_msg, MsgClass, MsgType}, Mld); +asp_inactive(M3uaMsg, LoopDat, Mld) when is_record(M3uaMsg, m3ua_msg) -> + rx_m3ua(M3uaMsg, asp_inactive, Mld). + +asp_active(#m3ua_msg{version = 1, msg_class = MsgClass, msg_type = MsgType}, + LoopDat, Mld) when MsgClass == ?M3UA_MSGC_ASPSM; MsgClass == ?M3UA_MSGC_ASPTM -> + % convert from M3UA to xua_msg and call into master module + xua_asp_fsm:asp_active({xua_msg, MsgClass, MsgType}, Mld); +asp_active(M3uaMsg, LoopDat, Mld) when is_record(M3uaMsg, m3ua_msg) -> + rx_m3ua(M3uaMsg, asp_active, Mld). + + + + + +rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_MGMT, + msg_type = ?M3UA_MSGT_MGMT_NTFY}, State, LoopDat) -> + xua_asp_fsm:send_prim_to_user(LoopDat, osmo_util:make_prim('M','NOTIFY',indication,[Msg])), + {next_state, State, LoopDat}; + +rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_ASPSM, + msg_type = ?M3UA_MSGT_ASPSM_BEAT}, State, LoopDat) -> + % Send BEAT_ACK using the same payload as the BEAT msg + xua_asp_fsm:send_sctp_to_peer(LoopDat, Msg#m3ua_msg{msg_type = ?M3UA_MSGT_ASPSM_BEAT_ACK}), + {next_state, State, LoopDat}; + +rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_MGMT, + msg_type = ?M3UA_MSGT_MGMT_ERR}, State, LoopDat) -> + xua_asp_fsm:send_prim_to_user(LoopDat, osmo_util:make_prim('M','ERROR',indication,[Msg])), + {next_state, State, LoopDat}; + +rx_m3ua(Msg = #m3ua_msg{version = 1, msg_class = ?M3UA_MSGC_SSNM, + msg_type = MsgType, payload = Params}, State, LoopDat) -> + % transform to classic MTP primitive and send up to the user + Mtp = map_ssnm_to_mtp_prim(MsgType), + xua_asp_fsm:send_prim_to_user(LoopDat, Mtp), + {next_state, State, LoopDat}; + +rx_m3ua(Msg = #m3ua_msg{}, State, LoopDat) -> + io:format("M3UA Unknown messge ~p in state ~p~n", [Msg, State]), + {next_state, State, LoopDat}. + +% Transform the M3UA SSNM messages into classic MTP primitives +map_ssnm_to_mtp_prim(MsgType) -> + Mtp = #primitive{subsystem = 'MTP', spec_name = indication}, + case MsgType of + ?M3UA_MSGT_SSNM_DUNA -> Mtp#primitive{gen_name = 'PAUSE'}; + ?M3UA_MSGT_SSNM_DAVA -> Mtp#primitive{gen_name = 'RESUME'}; + ?M3UA_MSGT_SSNM_SCON -> Mtp#primitive{gen_name = 'STATUS'}; + ?M3UA_MSGT_SSNM_DUPU -> Mtp#primitive{gen_name = 'STATUS'} + end. -- cgit v1.2.3