| Neels Hofmeyr | e2f24d5 | 2017-05-08 15:12:20 +0200 | [diff] [blame^] | 1 | /* Implementation for MSC decisions which interface to send messages out on. */ |
| 2 | |
| 3 | /* (C) 2016 by sysmocom s.m.f.c GmbH <info@sysmocom.de> |
| 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 published by |
| 9 | * the Free Software Foundation; either version 3 of the License, or |
| 10 | * (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 Affero 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/>. |
| 19 | */ |
| 20 | |
| 21 | #include <osmocom/core/logging.h> |
| 22 | |
| 23 | #include <openbsc/debug.h> |
| 24 | #include <openbsc/gsm_data.h> |
| 25 | #include <openbsc/msc_ifaces.h> |
| 26 | |
| 27 | static int msc_tx(struct gsm_subscriber_connection *conn, struct msgb *msg) |
| 28 | { |
| 29 | switch (conn->via_ran) { |
| 30 | /* FUTURE |
| 31 | case RAN_GERAN_A: |
| 32 | msg->dst = conn; |
| 33 | return a_tx(msg); |
| 34 | |
| 35 | case RAN_UTRAN_IU: |
| 36 | msg->dst = conn->iu.ue_ctx; |
| 37 | return iu_tx(msg, 0); |
| 38 | */ |
| 39 | default: |
| 40 | LOGP(DMSC, LOGL_ERROR, |
| 41 | "msc_tx(): conn->via_ran invalid (%d)\n", |
| 42 | conn->via_ran); |
| 43 | return -1; |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | |
| 48 | int msc_tx_dtap(struct gsm_subscriber_connection *conn, |
| 49 | struct msgb *msg) |
| 50 | { |
| 51 | return msc_tx(conn, msg); |
| 52 | } |
| 53 | |
| 54 | |
| 55 | /* 9.2.5 CM service accept */ |
| 56 | int msc_gsm48_tx_mm_serv_ack(struct gsm_subscriber_connection *conn) |
| 57 | { |
| 58 | struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 SERV ACC"); |
| 59 | struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh)); |
| 60 | |
| 61 | gh->proto_discr = GSM48_PDISC_MM; |
| 62 | gh->msg_type = GSM48_MT_MM_CM_SERV_ACC; |
| 63 | |
| 64 | DEBUGP(DMM, "-> CM SERVICE ACCEPT\n"); |
| 65 | |
| 66 | return msc_tx_dtap(conn, msg); |
| 67 | } |
| 68 | |
| 69 | /* 9.2.6 CM service reject */ |
| 70 | int msc_gsm48_tx_mm_serv_rej(struct gsm_subscriber_connection *conn, |
| 71 | enum gsm48_reject_value value) |
| 72 | { |
| 73 | struct msgb *msg; |
| 74 | |
| 75 | msg = gsm48_create_mm_serv_rej(value); |
| 76 | if (!msg) { |
| 77 | LOGP(DMM, LOGL_ERROR, "Failed to allocate CM Service Reject.\n"); |
| 78 | return -1; |
| 79 | } |
| 80 | |
| 81 | DEBUGP(DMM, "-> CM SERVICE Reject cause: %d\n", value); |
| 82 | |
| 83 | return msc_tx_dtap(conn, msg); |
| 84 | } |