From 6de754cdde5319af3059d8fc6abf85037ec7eacc Mon Sep 17 00:00:00 2001 From: Pau Espin Pedrol Date: Tue, 16 Apr 2019 20:33:25 +0200 Subject: bssap: Feed Assign Complete with Osmux CID retrieved from MGW The CID is sent back to the MSC so it can configure its MGW to send Osmux frames to the BSC MGW using this CID. Change-Id: I77dfdd965ae828c39a9818669177aefd22bc02f2 --- src/osmo-bsc/assignment_fsm.c | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) (limited to 'src/osmo-bsc') diff --git a/src/osmo-bsc/assignment_fsm.c b/src/osmo-bsc/assignment_fsm.c index 834b58b97..aefa4afa5 100644 --- a/src/osmo-bsc/assignment_fsm.c +++ b/src/osmo-bsc/assignment_fsm.c @@ -128,6 +128,13 @@ static void on_assignment_failure(struct gsm_subscriber_connection *conn) } } +static void _gsm0808_ass_compl_extend_osmux(struct msgb *msg, uint8_t cid) +{ + OSMO_ASSERT(msg->l3h[1] == msgb_l3len(msg) - 2); /*TL not in len */ + msgb_tv_put(msg, GSM0808_IE_OSMO_OSMUX_CID, cid); + msg->l3h[1] = msgb_l3len(msg) - 2; +} + static void send_assignment_complete(struct gsm_subscriber_connection *conn) { int rc; @@ -135,6 +142,7 @@ static void send_assignment_complete(struct gsm_subscriber_connection *conn) struct gsm0808_speech_codec *sc_ptr = NULL; struct sockaddr_storage addr_local; struct sockaddr_storage *addr_local_p = NULL; + uint8_t osmux_cid = 0; int perm_spch = 0; uint8_t chosen_channel; struct msgb *resp; @@ -164,6 +172,15 @@ static void send_assignment_complete(struct gsm_subscriber_connection *conn) addr_local_p = &addr_local; } + if (gscon_is_aoip(conn) && conn->assignment.req.use_osmux) { + if (!osmo_mgcpc_ep_ci_get_crcx_info_to_osmux_cid(conn->user_plane.mgw_endpoint_ci_msc, + &osmux_cid)) { + assignment_fail(GSM0808_CAUSE_EQUIPMENT_FAILURE, + "Unable to compose Osmux CID of MGW -> MSC"); + return; + } + } + /* Only AoIP networks include a speech codec (choosen) in the * assignment complete message. */ if (gscon_is_aoip(conn)) { @@ -185,6 +202,10 @@ static void send_assignment_complete(struct gsm_subscriber_connection *conn) return; } + if (gscon_is_aoip(conn) && conn->assignment.requires_voice_stream && + conn->assignment.req.use_osmux) + _gsm0808_ass_compl_extend_osmux(resp, osmux_cid); + rc = gscon_sigtran_send(conn, resp); if (rc) { assignment_fail(GSM0808_CAUSE_EQUIPMENT_FAILURE, @@ -466,10 +487,11 @@ void assignment_fsm_start(struct gsm_subscriber_connection *conn, struct gsm_bts assignment_fsm_update_id(conn); LOG_ASSIGNMENT(conn, LOGL_INFO, "Starting Assignment: chan_mode=%s, chan_type=%s," - " aoip=%s MSC-rtp=%s:%u\n", + " aoip=%s MSC-rtp=%s:%u (osmux=%s)\n", gsm48_chan_mode_name(conn->lchan->ch_mode_rate.chan_mode), rate_names[conn->lchan->ch_mode_rate.chan_rate], - req->aoip ? "yes" : "no", req->msc_rtp_addr, req->msc_rtp_port); + req->aoip ? "yes" : "no", req->msc_rtp_addr, req->msc_rtp_port, + req->use_osmux ? "yes" : "no"); assignment_fsm_state_chg(ASSIGNMENT_ST_WAIT_LCHAN_ACTIVE); info = (struct lchan_activate_info){ -- cgit v1.2.3