500 lines
18 KiB
C
500 lines
18 KiB
C
/* (C) 2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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* Author: Oliver Smith <osmith@sysmocom.de>
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/lienses/>.
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*
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*/
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#include "config.h"
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#include <inttypes.h>
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#include <osmocom/core/fsm.h>
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#include <osmocom/gsm/gsm0808.h>
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#include <osmocom/mgcp_client/mgcp_client_endpoint_fsm.h>
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#include <osmocom/mgcp_client/mgcp_client_fsm.h>
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#include <osmocom/sigtran/sccp_helpers.h>
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#include <osmocom/bsc_nat/bsc_nat.h>
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#include <osmocom/bsc_nat/bssap.h>
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#include <osmocom/bsc_nat/logging.h>
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#include <osmocom/bsc_nat/subscr_conn.h>
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#include <osmocom/bsc_nat/subscr_conn_fsm.h>
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#define X(s) (1 << (s))
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#define TIMEOUT_MGW 10
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#define TIMEOUT_BSC 20
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enum subscr_conn_fsm_states {
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SUBSCR_CONN_FSM_ST_IDLE,
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SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_CRCX_CN,
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SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_MDCX_CN,
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SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_CRCX_RAN,
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SUBSCR_CONN_FSM_ST_WAITING_FOR_ASSIGNMENT_COMPLETE,
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SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_COMPLETE_MDCX_RAN,
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SUBSCR_CONN_FSM_ST_WAITING_FOR_CLEAR_COMMAND,
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};
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static int tx_ass_req_to_ran(struct subscr_conn *subscr_conn)
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{
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const struct mgcp_conn_peer *rtp_info;
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struct sockaddr_storage ss;
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struct osmo_sockaddr_str aoip_transp_addr;
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int rc;
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/* Fill sockaddr_storage from rtp_info */
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rtp_info = osmo_mgcpc_ep_ci_get_rtp_info(subscr_conn->ran.ci);
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if (!rtp_info) {
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LOGPFSML(subscr_conn->fi, LOGL_ERROR, "Failed to get RTP info from MGW, aborting assignment request\n");
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return -1;
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}
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if (osmo_sockaddr_str_from_str(&aoip_transp_addr, rtp_info->addr, rtp_info->port) < 0
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|| osmo_sockaddr_str_to_sockaddr((const struct osmo_sockaddr_str *)&aoip_transp_addr, &ss) < 0) {
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LOGPFSML(subscr_conn->fi, LOGL_ERROR, "RTP info from MGW is invalid, aborting assignment request\n");
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return -1;
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}
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if (bssmap_replace_ie_aoip_transp_addr(&subscr_conn->ass.msg, &ss) < 0) {
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LOGPFSML(subscr_conn->fi, LOGL_ERROR, "Failed to replace AoIP transport layer address, aborting"
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" assignment request\n");
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return -1;
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}
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rc = osmo_sccp_tx_data_msg(g_bsc_nat->ran.sccp_inst->scu, subscr_conn->ran.id, subscr_conn->ass.msg);
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subscr_conn->ass.msg = NULL;
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return rc;
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}
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static int tx_ass_compl_to_cn(struct subscr_conn *subscr_conn)
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{
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const struct mgcp_conn_peer *rtp_info;
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struct sockaddr_storage ss;
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struct osmo_sockaddr_str aoip_transp_addr;
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int rc;
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/* Fill sockaddr_storage from rtp_info */
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rtp_info = osmo_mgcpc_ep_ci_get_rtp_info(subscr_conn->cn.ci);
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if (!rtp_info) {
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LOGPFSML(subscr_conn->fi, LOGL_ERROR, "Failed to get RTP info from MGW, aborting assignment complete\n");
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return -1;
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}
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if (osmo_sockaddr_str_from_str(&aoip_transp_addr, rtp_info->addr, rtp_info->port) < 0
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|| osmo_sockaddr_str_to_sockaddr((const struct osmo_sockaddr_str *)&aoip_transp_addr, &ss) < 0) {
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LOGPFSML(subscr_conn->fi, LOGL_ERROR, "RTP info from MGW is invalid, aborting assignment complete\n");
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return -1;
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}
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if (bssmap_replace_ie_aoip_transp_addr(&subscr_conn->ass.msg, &ss) < 0) {
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LOGPFSML(subscr_conn->fi, LOGL_ERROR, "Failed to replace AoIP transport layer address, aborting"
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" assignment complete\n");
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return -1;
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}
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rc = osmo_sccp_tx_data_msg(g_bsc_nat->cn.sccp_inst->scu, subscr_conn->cn.id, subscr_conn->ass.msg);
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subscr_conn->ass.msg = NULL;
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return rc;
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}
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static void st_idle_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_state)
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{
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struct subscr_conn *subscr_conn = (struct subscr_conn *)fi->priv;
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if (!subscr_conn->ep)
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return;
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osmo_mgcpc_ep_clear(subscr_conn->ep);
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subscr_conn->ep = NULL;
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subscr_conn->ran.ci = NULL;
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subscr_conn->cn.ci = NULL;
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}
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static void st_idle(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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switch (event) {
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case SUBSCR_CONN_FSM_EV_BSSMAP_ASSIGNMENT_REQUEST:
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_CRCX_CN, TIMEOUT_MGW, 0);
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break;
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case SUBSCR_CONN_FSM_EV_MGCP_EP_TERM:
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/* This event is expected, as we terminate the MGCP EP in
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* st_idle_on_enter(). Nothing to do here. */
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break;
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case SUBSCR_CONN_FSM_EV_BSSMAP_CLEAR_COMMAND:
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/* Clear commands sent to this FSM in idle state are not
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* relevant, so ignore them here. bssmap_cn_handle_clear_cmd()
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* forwards them from CN to RAN. */
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break;
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default:
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OSMO_ASSERT(false);
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}
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}
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static void st_processing_ass_req_crcx_cn_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_stat)
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{
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struct mgcp_client *mgcp_client;
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struct mgcp_conn_peer crcx_info = {};
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struct subscr_conn *subscr_conn = (struct subscr_conn *)fi->priv;
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int call_id = subscr_conn_get_next_id_mgw();
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if (call_id < 0) {
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LOGPFSML(fi, LOGL_ERROR, "Failed to get next_id_mgw, aborting assignment request processing\n");
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bssmap_tx_assignment_failure_cn(subscr_conn, GSM0808_CAUSE_PROTOCOL_ERROR_BETWEEN_BSS_AND_MSC);
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_IDLE, 0, 0);
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}
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/* MGCP EP */
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mgcp_client = mgcp_client_pool_get(g_bsc_nat->mgw.pool);
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OSMO_ASSERT(mgcp_client);
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subscr_conn->ep = osmo_mgcpc_ep_alloc(subscr_conn->fi, SUBSCR_CONN_FSM_EV_MGCP_EP_TERM, mgcp_client,
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g_bsc_nat->mgw.tdefs, "SUBSCR-CONN-EP",
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mgcp_client_rtpbridge_wildcard(mgcp_client));
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/* MGCP CRCX CN */
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LOGPFSML(fi, LOGL_DEBUG, "Set MGW call_id=%d for %s\n", call_id, talloc_get_name(subscr_conn));
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crcx_info.call_id = subscr_conn->mgw_call_id = call_id;
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subscr_conn->cn.ci = osmo_mgcpc_ep_ci_add(subscr_conn->ep, "CI-%"PRIu32"-CN", crcx_info.call_id);
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osmo_mgcpc_ep_ci_request(subscr_conn->cn.ci, MGCP_VERB_CRCX, &crcx_info, subscr_conn->fi,
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SUBSCR_CONN_FSM_EV_MGCP_EP_OK, SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL, NULL);
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}
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static void st_processing_ass_req_crcx_cn(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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struct subscr_conn *subscr_conn = (struct subscr_conn *)fi->priv;
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switch (event) {
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case SUBSCR_CONN_FSM_EV_MGCP_EP_OK:
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LOGPFSML(fi, LOGL_DEBUG, "Rx MGCP OK\n");
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_MDCX_CN, TIMEOUT_MGW, 0);
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break;
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case SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL:
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LOGPFSML(fi, LOGL_ERROR, "MGCP failure, aborting assignment request processing\n");
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bssmap_tx_assignment_failure_cn(subscr_conn, GSM0808_CAUSE_PROTOCOL_ERROR_BETWEEN_BSS_AND_MSC);
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_IDLE, 0, 0);
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break;
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default:
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OSMO_ASSERT(false);
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}
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}
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static void st_processing_ass_req_mdcx_cn_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_stat)
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{
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struct mgcp_conn_peer mdcx_info = {};
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struct subscr_conn *subscr_conn = (struct subscr_conn *)fi->priv;
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struct osmo_sockaddr_str *addr = &subscr_conn->ass.aoip_transp_addr;
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/* Set RTP addr + port */
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osmo_static_assert(sizeof(mdcx_info.addr) == sizeof(addr->ip), sizeof_addr);
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memcpy(mdcx_info.addr, addr->ip, sizeof(mdcx_info.addr));
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mdcx_info.port = addr->port;
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/* MGCP MDCX CN */
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osmo_mgcpc_ep_ci_request(subscr_conn->cn.ci, MGCP_VERB_MDCX, &mdcx_info, subscr_conn->fi,
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SUBSCR_CONN_FSM_EV_MGCP_EP_OK, SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL, NULL);
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}
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static void st_processing_ass_req_mdcx_cn(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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struct subscr_conn *subscr_conn = (struct subscr_conn *)fi->priv;
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switch (event) {
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case SUBSCR_CONN_FSM_EV_MGCP_EP_OK:
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LOGPFSML(fi, LOGL_DEBUG, "Rx MGCP OK\n");
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_CRCX_RAN, TIMEOUT_MGW, 0);
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break;
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case SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL:
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LOGPFSML(fi, LOGL_ERROR, "MGCP failure, aborting assignment request processing\n");
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bssmap_tx_assignment_failure_cn(subscr_conn, GSM0808_CAUSE_PROTOCOL_ERROR_BETWEEN_BSS_AND_MSC);
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_IDLE, 0, 0);
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break;
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default:
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OSMO_ASSERT(false);
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}
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}
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static void st_processing_ass_req_crcx_ran_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_stat)
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{
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struct subscr_conn *subscr_conn = (struct subscr_conn *)fi->priv;
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struct mgcp_conn_peer crcx_info = {};
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crcx_info.call_id = subscr_conn->mgw_call_id;
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subscr_conn->ran.ci = osmo_mgcpc_ep_ci_add(subscr_conn->ep, "CI-%"PRIu32"-RAN", crcx_info.call_id);
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osmo_mgcpc_ep_ci_request(subscr_conn->ran.ci, MGCP_VERB_CRCX, &crcx_info, subscr_conn->fi,
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SUBSCR_CONN_FSM_EV_MGCP_EP_OK, SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL, NULL);
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}
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static void st_processing_ass_req_crcx_ran(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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struct subscr_conn *subscr_conn = (struct subscr_conn *)fi->priv;
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switch (event) {
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case SUBSCR_CONN_FSM_EV_MGCP_EP_OK:
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LOGPFSML(fi, LOGL_DEBUG, "Rx MGCP OK\n");
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if (tx_ass_req_to_ran(subscr_conn) < 0) {
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bssmap_tx_assignment_failure_cn(subscr_conn, GSM0808_CAUSE_PROTOCOL_ERROR_BETWEEN_BSS_AND_MSC);
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_IDLE, 0, 0);
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return;
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}
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_WAITING_FOR_ASSIGNMENT_COMPLETE, TIMEOUT_BSC, 0);
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break;
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case SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL:
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LOGPFSML(fi, LOGL_ERROR, "MGCP failure, aborting assignment request processing\n");
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bssmap_tx_assignment_failure_cn(subscr_conn, GSM0808_CAUSE_PROTOCOL_ERROR_BETWEEN_BSS_AND_MSC);
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_IDLE, 0, 0);
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break;
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default:
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OSMO_ASSERT(false);
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}
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}
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static void st_waiting_for_ass_compl(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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switch (event) {
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case SUBSCR_CONN_FSM_EV_BSSMAP_ASSIGNMENT_COMPLETE:
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_COMPLETE_MDCX_RAN, TIMEOUT_MGW, 0);
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break;
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case SUBSCR_CONN_FSM_EV_BSSMAP_ASSIGNMENT_FAILURE:
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/* The original bssmap message gets forwarded from RAN to CN by
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* bssmap_ran_handle_assignment_failure() already, so just
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* reset the FSM to idle here (clears the mgw endpoint). */
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_IDLE, 0, 0);
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break;
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case SUBSCR_CONN_FSM_EV_BSSMAP_CLEAR_COMMAND:
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/* Dialing an invalid number results in receiving a clear
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* command from the MSC in ST_WAITING_FOR_ASSIGNMENT_COMPLETE.
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* The original message gets forwarded from CN to RAN by
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* bssmap_cn_handle_clear_cmd() already, so just reset the FSM
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* to idle here (clears the mgw endpoint). */
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_IDLE, 0, 0);
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break;
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default:
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OSMO_ASSERT(false);
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}
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}
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static void st_processing_ass_compl_mdcx_ran_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_stat)
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{
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struct mgcp_conn_peer mdcx_info = {};
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struct subscr_conn *subscr_conn = (struct subscr_conn *)fi->priv;
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struct osmo_sockaddr_str *aoip_transp_addr = &subscr_conn->ass.aoip_transp_addr;
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/* Set RTP addr + port */
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osmo_static_assert(sizeof(mdcx_info.addr) == sizeof(aoip_transp_addr->ip), sizeof_addr);
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memcpy(mdcx_info.addr, aoip_transp_addr->ip, sizeof(mdcx_info.addr));
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mdcx_info.port = aoip_transp_addr->port;
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/* MGCP MDCX RAN */
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osmo_mgcpc_ep_ci_request(subscr_conn->ran.ci, MGCP_VERB_MDCX, &mdcx_info, subscr_conn->fi,
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SUBSCR_CONN_FSM_EV_MGCP_EP_OK, SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL, NULL);
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}
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static void st_processing_ass_compl_mdcx_ran(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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struct subscr_conn *subscr_conn = (struct subscr_conn *)fi->priv;
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switch (event) {
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case SUBSCR_CONN_FSM_EV_MGCP_EP_OK:
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LOGPFSML(fi, LOGL_DEBUG, "Rx MGCP EP OK\n");
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if (tx_ass_compl_to_cn(subscr_conn) < 0) {
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bssmap_tx_assignment_failure_cn(subscr_conn, GSM0808_CAUSE_PROTOCOL_ERROR_BETWEEN_BSS_AND_MSC);
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bssmap_tx_assignment_failure_ran(subscr_conn, GSM0808_CAUSE_PROTOCOL_ERROR_BETWEEN_BSS_AND_MSC);
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_IDLE, 0, 0);
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return;
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}
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/* No timeout for ST_WAITING_FOR_CLEAR_COMMAND, as the FSM will
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* stay in this state until the call is done. */
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_WAITING_FOR_CLEAR_COMMAND, 0, 0);
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break;
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case SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL:
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LOGPFSML(fi, LOGL_ERROR, "MGCP failure, aborting assignment complete processing\n");
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bssmap_tx_assignment_failure_cn(subscr_conn, GSM0808_CAUSE_PROTOCOL_ERROR_BETWEEN_BSS_AND_MSC);
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bssmap_tx_assignment_failure_ran(subscr_conn, GSM0808_CAUSE_PROTOCOL_ERROR_BETWEEN_BSS_AND_MSC);
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_IDLE, 0, 0);
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break;
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default:
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OSMO_ASSERT(false);
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}
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}
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static void st_waiting_for_clear_command(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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switch (event) {
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case SUBSCR_CONN_FSM_EV_BSSMAP_CLEAR_COMMAND:
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/* The original bssmap message gets forwarded from CN to RAN by
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* bssmap_cn_handle_clear_cmd() already, so just reset the FSM
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* to idle here (clears the mgw endpoint). */
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_IDLE, 0, 0);
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break;
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default:
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OSMO_ASSERT(false);
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}
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}
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int subscr_conn_fsm_timer_cb(struct osmo_fsm_inst *fi)
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{
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LOGPFSML(fi, LOGL_ERROR, "Timeout reached, reset FSM to idle\n");
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osmo_fsm_inst_state_chg(fi, SUBSCR_CONN_FSM_ST_IDLE, 0, 0);
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return 0;
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}
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static struct osmo_fsm_state subscr_conn_fsm_states[] = {
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[SUBSCR_CONN_FSM_ST_IDLE] = {
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.name = "IDLE",
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.in_event_mask = 0
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| X(SUBSCR_CONN_FSM_EV_BSSMAP_ASSIGNMENT_REQUEST)
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| X(SUBSCR_CONN_FSM_EV_BSSMAP_CLEAR_COMMAND)
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| X(SUBSCR_CONN_FSM_EV_MGCP_EP_TERM)
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,
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.out_state_mask = 0
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|
| X(SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_CRCX_CN)
|
|
,
|
|
.action = st_idle,
|
|
.onenter = st_idle_on_enter,
|
|
},
|
|
[SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_CRCX_CN] = {
|
|
.name = "PROCESSING_ASSIGNMENT_REQUEST_CRCX_CN",
|
|
.in_event_mask = 0
|
|
| X(SUBSCR_CONN_FSM_EV_MGCP_EP_OK)
|
|
| X(SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL)
|
|
,
|
|
.out_state_mask = 0
|
|
| X(SUBSCR_CONN_FSM_ST_IDLE)
|
|
| X(SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_MDCX_CN)
|
|
,
|
|
.action = st_processing_ass_req_crcx_cn,
|
|
.onenter = st_processing_ass_req_crcx_cn_on_enter,
|
|
},
|
|
[SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_MDCX_CN] = {
|
|
.name = "PROCESSING_ASSIGNMENT_REQUEST_MDCX_CN",
|
|
.in_event_mask = 0
|
|
| X(SUBSCR_CONN_FSM_EV_MGCP_EP_OK)
|
|
| X(SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL)
|
|
,
|
|
.out_state_mask = 0
|
|
| X(SUBSCR_CONN_FSM_ST_IDLE)
|
|
| X(SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_CRCX_RAN)
|
|
,
|
|
.action = st_processing_ass_req_mdcx_cn,
|
|
.onenter = st_processing_ass_req_mdcx_cn_on_enter,
|
|
},
|
|
[SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_REQUEST_CRCX_RAN] = {
|
|
.name = "PROCESSING_ASSIGNMENT_REQUEST_CRCX_RAN",
|
|
.in_event_mask = 0
|
|
| X(SUBSCR_CONN_FSM_EV_MGCP_EP_OK)
|
|
| X(SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL)
|
|
,
|
|
.out_state_mask = 0
|
|
| X(SUBSCR_CONN_FSM_ST_IDLE)
|
|
| X(SUBSCR_CONN_FSM_ST_WAITING_FOR_ASSIGNMENT_COMPLETE)
|
|
,
|
|
.action = st_processing_ass_req_crcx_ran,
|
|
.onenter = st_processing_ass_req_crcx_ran_on_enter,
|
|
},
|
|
[SUBSCR_CONN_FSM_ST_WAITING_FOR_ASSIGNMENT_COMPLETE] = {
|
|
.name = "WAITING_FOR_ASSIGNMENT_COMPLETE",
|
|
.in_event_mask = 0
|
|
| X(SUBSCR_CONN_FSM_EV_BSSMAP_ASSIGNMENT_COMPLETE)
|
|
| X(SUBSCR_CONN_FSM_EV_BSSMAP_ASSIGNMENT_FAILURE)
|
|
| X(SUBSCR_CONN_FSM_EV_BSSMAP_CLEAR_COMMAND)
|
|
,
|
|
.out_state_mask = 0
|
|
| X(SUBSCR_CONN_FSM_ST_IDLE)
|
|
| X(SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_COMPLETE_MDCX_RAN)
|
|
,
|
|
.action = st_waiting_for_ass_compl,
|
|
},
|
|
[SUBSCR_CONN_FSM_ST_PROCESSING_ASSIGNMENT_COMPLETE_MDCX_RAN] = {
|
|
.name = "PROCESSING_ASSIGNMENT_COMPLETE",
|
|
.in_event_mask = 0
|
|
| X(SUBSCR_CONN_FSM_EV_MGCP_EP_OK)
|
|
| X(SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL)
|
|
,
|
|
.out_state_mask = 0
|
|
| X(SUBSCR_CONN_FSM_ST_IDLE)
|
|
| X(SUBSCR_CONN_FSM_ST_WAITING_FOR_CLEAR_COMMAND)
|
|
,
|
|
.action = st_processing_ass_compl_mdcx_ran,
|
|
.onenter = st_processing_ass_compl_mdcx_ran_on_enter,
|
|
},
|
|
[SUBSCR_CONN_FSM_ST_WAITING_FOR_CLEAR_COMMAND] = {
|
|
.name = "WAITING_FOR_CLEAR_COMMAND",
|
|
.in_event_mask = 0
|
|
| X(SUBSCR_CONN_FSM_EV_BSSMAP_CLEAR_COMMAND)
|
|
,
|
|
.out_state_mask = 0
|
|
| X(SUBSCR_CONN_FSM_ST_IDLE)
|
|
,
|
|
.action = st_waiting_for_clear_command,
|
|
},
|
|
};
|
|
|
|
const struct value_string subscr_conn_fsm_event_names[] = {
|
|
OSMO_VALUE_STRING(SUBSCR_CONN_FSM_EV_BSSMAP_ASSIGNMENT_REQUEST),
|
|
OSMO_VALUE_STRING(SUBSCR_CONN_FSM_EV_BSSMAP_ASSIGNMENT_COMPLETE),
|
|
OSMO_VALUE_STRING(SUBSCR_CONN_FSM_EV_BSSMAP_ASSIGNMENT_FAILURE),
|
|
OSMO_VALUE_STRING(SUBSCR_CONN_FSM_EV_BSSMAP_CLEAR_COMMAND),
|
|
OSMO_VALUE_STRING(SUBSCR_CONN_FSM_EV_MGCP_EP_OK),
|
|
OSMO_VALUE_STRING(SUBSCR_CONN_FSM_EV_MGCP_EP_FAIL),
|
|
OSMO_VALUE_STRING(SUBSCR_CONN_FSM_EV_MGCP_EP_TERM),
|
|
{ 0, NULL }
|
|
};
|
|
|
|
struct osmo_fsm subscr_conn_fsm = {
|
|
.name = "SUBSCR_CONN",
|
|
.states = subscr_conn_fsm_states,
|
|
.num_states = ARRAY_SIZE(subscr_conn_fsm_states),
|
|
.log_subsys = DMAIN,
|
|
.event_names = subscr_conn_fsm_event_names,
|
|
.timer_cb = subscr_conn_fsm_timer_cb,
|
|
};
|
|
|
|
static void ass_update(struct subscr_conn *subscr_conn, const struct osmo_sockaddr_str *aoip_transp_addr,
|
|
struct msgb *msg)
|
|
{
|
|
struct msgb *copy = msgb_copy_c(subscr_conn, msg, talloc_get_name(msg));
|
|
OSMO_ASSERT(copy);
|
|
|
|
if (subscr_conn->ass.msg)
|
|
msgb_free(subscr_conn->ass.msg);
|
|
|
|
subscr_conn->ass.msg = copy;
|
|
subscr_conn->ass.aoip_transp_addr = *aoip_transp_addr;
|
|
}
|
|
|
|
int subscr_conn_rx_ass_req(struct subscr_conn *subscr_conn, const struct osmo_sockaddr_str *aoip_transp_addr,
|
|
struct msgb *msg)
|
|
{
|
|
if (subscr_conn->fi->state != SUBSCR_CONN_FSM_ST_IDLE) {
|
|
LOGPFSML(subscr_conn->fi, LOGL_ERROR, "Unexpected Rx BSSMAP assignment request\n");
|
|
return -1;
|
|
}
|
|
|
|
ass_update(subscr_conn, aoip_transp_addr, msg);
|
|
return osmo_fsm_inst_dispatch(subscr_conn->fi, SUBSCR_CONN_FSM_EV_BSSMAP_ASSIGNMENT_REQUEST, NULL);
|
|
}
|
|
|
|
int subscr_conn_rx_ass_compl(struct subscr_conn *subscr_conn, const struct osmo_sockaddr_str *aoip_transp_addr,
|
|
struct msgb *msg)
|
|
{
|
|
if (subscr_conn->fi->state != SUBSCR_CONN_FSM_ST_WAITING_FOR_ASSIGNMENT_COMPLETE) {
|
|
LOGPFSML(subscr_conn->fi, LOGL_ERROR, "Unexpected Rx BSSMAP assignment complete\n");
|
|
return -1;
|
|
}
|
|
|
|
ass_update(subscr_conn, aoip_transp_addr, msg);
|
|
return osmo_fsm_inst_dispatch(subscr_conn->fi, SUBSCR_CONN_FSM_EV_BSSMAP_ASSIGNMENT_COMPLETE, NULL);
|
|
}
|
|
|
|
static __attribute__((constructor)) void subscr_conn_fsm_init(void)
|
|
{
|
|
OSMO_ASSERT(osmo_fsm_register(&subscr_conn_fsm) == 0);
|
|
}
|