2015-10-06 20:07:04 +00:00
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/* main application for hnb-gw part of osmo-iuh */
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/* (C) 2015 by Harald Welte <laforge@gnumonks.org>
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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/licenses/>.
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*
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*/
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2015-08-30 10:20:09 +00:00
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include <errno.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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2015-09-11 15:49:37 +00:00
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#include <netinet/in.h>
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2015-08-30 10:20:09 +00:00
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#include <netinet/sctp.h>
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2015-09-11 15:49:37 +00:00
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#include <arpa/inet.h>
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2015-08-30 10:20:09 +00:00
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#include <osmocom/core/application.h>
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#include <osmocom/core/talloc.h>
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2015-08-29 19:47:39 +00:00
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#include <osmocom/core/select.h>
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2015-08-30 10:20:09 +00:00
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#include <osmocom/core/logging.h>
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2015-08-29 19:47:39 +00:00
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#include <osmocom/core/socket.h>
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2015-08-30 10:20:09 +00:00
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#include <osmocom/core/msgb.h>
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2015-09-07 19:53:25 +00:00
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#include <osmocom/core/write_queue.h>
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2015-08-30 10:20:09 +00:00
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#include <osmocom/vty/telnet_interface.h>
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#include <osmocom/vty/logging.h>
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2015-12-02 10:22:53 +00:00
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#include <osmocom/vty/command.h>
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2015-08-29 19:47:39 +00:00
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2015-12-22 23:03:41 +00:00
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#include <osmocom/netif/stream.h>
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2015-12-22 22:59:24 +00:00
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#include <osmocom/sigtran/sua.h>
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#include <osmocom/sigtran/protocol/sua.h>
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#include <osmocom/sigtran/sccp_sap.h>
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2015-08-29 19:47:39 +00:00
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#include "hnbgw.h"
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2015-08-30 10:20:09 +00:00
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#include "hnbgw_hnbap.h"
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2015-09-10 16:47:08 +00:00
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#include "hnbgw_rua.h"
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2015-12-23 23:40:52 +00:00
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#include "hnbgw_cn.h"
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2015-12-23 19:16:36 +00:00
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#include "context_map.h"
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2015-08-30 10:20:09 +00:00
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static void *tall_hnb_ctx;
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2015-08-31 07:54:45 +00:00
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void *talloc_asn1_ctx;
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2015-08-29 19:47:39 +00:00
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2015-12-23 23:40:52 +00:00
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static struct hnb_gw *g_hnb_gw;
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static int listen_fd_cb(struct osmo_fd *fd, unsigned int what);
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static struct hnb_gw *hnb_gw_create(void *ctx)
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{
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struct hnb_gw *gw = talloc_zero(ctx, struct hnb_gw);
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gw->config.iuh_listen_port = IUH_DEFAULT_SCTP_PORT;
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gw->next_ue_ctx_id = 23;
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INIT_LLIST_HEAD(&gw->hnb_list);
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INIT_LLIST_HEAD(&gw->ue_list);
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INIT_LLIST_HEAD(&gw->cn_list);
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context_map_init(gw);
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return gw;
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}
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2015-08-29 19:47:39 +00:00
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2015-12-23 23:40:52 +00:00
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struct ue_context *ue_context_by_id(struct hnb_gw *gw, uint32_t id)
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2015-09-10 22:15:16 +00:00
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{
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struct ue_context *ue;
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2015-12-23 23:40:52 +00:00
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llist_for_each_entry(ue, &gw->ue_list, list) {
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2015-09-10 22:15:16 +00:00
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if (ue->context_id == id)
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return ue;
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}
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return NULL;
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}
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2015-12-23 23:40:52 +00:00
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struct ue_context *ue_context_by_imsi(struct hnb_gw *gw, const char *imsi)
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2015-09-10 22:15:16 +00:00
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{
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struct ue_context *ue;
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2015-12-23 23:40:52 +00:00
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llist_for_each_entry(ue, &gw->ue_list, list) {
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2015-09-10 22:15:16 +00:00
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if (!strcmp(ue->imsi, imsi))
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return ue;
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}
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return NULL;
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}
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2015-12-23 23:40:52 +00:00
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static uint32_t get_next_ue_ctx_id(struct hnb_gw *gw)
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2015-09-10 22:15:16 +00:00
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{
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uint32_t id;
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do {
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2015-12-23 23:40:52 +00:00
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id = gw->next_ue_ctx_id++;
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} while (ue_context_by_id(gw, id));
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2015-09-10 22:15:16 +00:00
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return id;
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}
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struct ue_context *ue_context_alloc(struct hnb_context *hnb, const char *imsi)
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{
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struct ue_context *ue;
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ue = talloc_zero(tall_hnb_ctx, struct ue_context);
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if (!ue)
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return NULL;
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ue->hnb = hnb;
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strncpy(ue->imsi, imsi, sizeof(ue->imsi));
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2015-12-23 23:40:52 +00:00
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ue->context_id = get_next_ue_ctx_id(hnb->gw);
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llist_add_tail(&ue->list, &hnb->gw->ue_list);
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2015-09-10 22:15:16 +00:00
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return ue;
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}
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void ue_context_free(struct ue_context *ue)
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{
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llist_del(&ue->list);
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talloc_free(ue);
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}
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2016-01-06 17:06:26 +00:00
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static int hnb_close_cb(struct osmo_stream_srv *conn)
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{
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}
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2015-09-10 22:15:16 +00:00
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2016-01-06 17:06:26 +00:00
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static int hnb_read_cb(struct osmo_stream_srv *conn)
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2015-08-29 19:47:39 +00:00
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{
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2016-01-06 17:06:26 +00:00
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struct hnb_context *hnb = osmo_stream_srv_get_data(conn);
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2015-08-29 19:47:39 +00:00
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struct msgb *msg = msgb_alloc(IUH_MSGB_SIZE, "Iuh rx");
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2015-09-07 19:53:25 +00:00
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int flags = 0;
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2015-08-29 19:47:39 +00:00
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int rc;
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if (!msg)
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return -ENOMEM;
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2015-09-10 20:32:15 +00:00
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/* we store a reference to the HomeNodeB in the msg->dest for the
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* benefit of varoius downstream processing functions */
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msg->dst = hnb;
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2016-01-06 17:06:26 +00:00
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rc = osmo_stream_srv_recv(conn, msg);
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if (rc == -EAGAIN) {
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/* Notification received */
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msgb_free(msg);
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return 0;
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} else if (rc < 0) {
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2015-08-29 19:47:39 +00:00
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LOGP(DMAIN, LOGL_ERROR, "Error during sctp_recvmsg()\n");
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2015-08-30 14:57:53 +00:00
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/* FIXME: clean up after disappeared HNB */
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2016-01-06 17:06:26 +00:00
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hnb_context_release(hnb);
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2015-12-22 15:26:48 +00:00
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goto out;
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2015-12-15 19:29:27 +00:00
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} else if (rc == 0) {
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2016-01-06 17:06:26 +00:00
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hnb_context_release(hnb);
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2015-12-22 15:26:48 +00:00
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rc = -1;
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2015-12-15 19:29:27 +00:00
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2015-12-22 15:26:48 +00:00
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goto out;
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2015-12-15 19:29:27 +00:00
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} else {
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2015-08-29 19:47:39 +00:00
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msgb_put(msg, rc);
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2015-12-15 19:29:27 +00:00
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}
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2015-08-29 19:47:39 +00:00
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2016-01-06 17:06:26 +00:00
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switch (msgb_sctp_ppid(msg)) {
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2015-08-29 19:47:39 +00:00
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case IUH_PPI_HNBAP:
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2016-01-06 17:06:26 +00:00
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hnb->hnbap_stream = msgb_sctp_stream(msg);
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2015-08-29 19:47:39 +00:00
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rc = hnbgw_hnbap_rx(hnb, msg);
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break;
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case IUH_PPI_RUA:
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2016-01-06 17:06:26 +00:00
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hnb->rua_stream = msgb_sctp_stream(msg);
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2015-09-10 16:47:08 +00:00
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rc = hnbgw_rua_rx(hnb, msg);
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2015-08-29 19:47:39 +00:00
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break;
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case IUH_PPI_SABP:
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case IUH_PPI_RNA:
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case IUH_PPI_PUA:
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LOGP(DMAIN, LOGL_ERROR, "Unimplemented SCTP PPID=%u received\n",
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2016-01-06 17:06:26 +00:00
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msgb_sctp_ppid(msg));
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2015-08-29 19:47:39 +00:00
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rc = 0;
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break;
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default:
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LOGP(DMAIN, LOGL_ERROR, "Unknown SCTP PPID=%u received\n",
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2016-01-06 17:06:26 +00:00
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msgb_sctp_ppid(msg));
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2015-08-29 19:47:39 +00:00
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rc = 0;
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break;
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}
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2015-12-22 15:26:48 +00:00
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out:
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2015-09-07 22:09:23 +00:00
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msgb_free(msg);
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2015-08-29 19:47:39 +00:00
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return rc;
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}
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2015-09-07 19:53:25 +00:00
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static int hnb_write_cb(struct osmo_fd *fd, struct msgb *msg)
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{
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struct hnb_context *ctx = fd->data;
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struct sctp_sndrcvinfo sinfo = {
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2015-12-22 23:03:41 +00:00
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.sinfo_ppid = htonl(msgb_sctp_ppid(msg)),
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2015-09-07 19:53:25 +00:00
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.sinfo_stream = ctx->hnbap_stream,
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};
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int rc;
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rc = sctp_send(fd->fd, msgb_data(msg), msgb_length(msg),
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&sinfo, 0);
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2015-09-07 20:41:26 +00:00
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/* we don't need to msgb_free(), write_queue does this for us */
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2015-09-07 19:53:25 +00:00
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return rc;
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}
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2016-01-06 17:06:26 +00:00
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struct hnb_context *hnb_context_alloc(struct hnb_gw *gw, struct osmo_stream_srv_link *link, int new_fd)
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2015-12-23 19:16:36 +00:00
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{
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struct hnb_context *ctx;
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ctx = talloc_zero(tall_hnb_ctx, struct hnb_context);
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if (!ctx)
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return NULL;
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ctx->gw = gw;
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2016-01-06 17:06:26 +00:00
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ctx->conn = osmo_stream_srv_create(tall_hnb_ctx, link, new_fd, hnb_read_cb, hnb_close_cb, ctx);
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if (!ctx->conn) {
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LOGP(DMAIN, LOGL_INFO, "error while creating connection\n");
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return -1;
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}
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2015-12-23 23:40:52 +00:00
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INIT_LLIST_HEAD(&ctx->map_list);
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2015-12-23 19:16:36 +00:00
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llist_add_tail(&ctx->list, &gw->hnb_list);
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}
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void hnb_context_release(struct hnb_context *ctx)
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{
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struct hnbgw_context_map *map, *map2;
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/* remove from the list of HNB contexts */
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llist_del(&ctx->list);
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/* deactivate all context maps */
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llist_for_each_entry_safe(map, map2, &ctx->map_list, hnb_list) {
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/* remove it from list, as HNB context will soon be
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* gone. Let's hope the seccond osmo_llist_del in the
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* map garbage collector wors fine? */
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llist_del(&map->hnb_list);
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context_map_deactivate(map);
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}
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2016-01-06 17:06:26 +00:00
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osmo_stream_srv_destroy(ctx->conn);
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2015-12-23 19:16:36 +00:00
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talloc_free(ctx);
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}
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2015-08-29 19:47:39 +00:00
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/*! call-back when the listen FD has something to read */
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2016-01-06 17:06:26 +00:00
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static int accept_cb(struct osmo_stream_srv_link *srv, int fd)
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2015-08-29 19:47:39 +00:00
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{
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2016-01-06 17:06:26 +00:00
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struct hnb_gw *gw = osmo_stream_srv_link_get_data(srv);
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2015-08-30 10:20:09 +00:00
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struct hnb_context *ctx;
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2015-08-29 19:47:39 +00:00
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2016-01-06 17:06:26 +00:00
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ctx = hnb_context_alloc(gw, srv, fd);
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2015-08-29 19:47:39 +00:00
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if (!ctx)
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return -ENOMEM;
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return 0;
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}
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2015-12-22 22:59:24 +00:00
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/* Entry point for primitives coming up from SCCP User SAP */
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static int sccp_sap_up(struct osmo_prim_hdr *oph, void *link)
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{
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struct osmo_scu_prim *prim = (struct osmo_scu_prim *) oph;
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LOGP(DMAIN, LOGL_DEBUG, "sccp_sap_up(%s)\n", osmo_scu_prim_name(oph));
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/* FIXME: Do something */
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msgb_free(oph->msg);
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return 0;
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}
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2015-08-30 10:20:09 +00:00
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static const struct log_info_cat log_cat[] = {
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[DMAIN] = {
|
2015-12-15 16:41:41 +00:00
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.name = "DMAIN", .loglevel = LOGL_INFO, .enabled = 1,
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2015-08-30 10:20:09 +00:00
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.color = "",
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.description = "Main program",
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},
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2015-12-17 10:51:17 +00:00
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[DHNBAP] = {
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.name = "DHNBAP", .loglevel = LOGL_DEBUG, .enabled = 1,
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.color = "",
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.description = "Home Node B Application Part",
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},
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2015-12-22 22:59:24 +00:00
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[DSUA] = {
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|
|
.name = "DSUA", .loglevel = LOGL_DEBUG, .enabled = 1,
|
|
|
|
.color = "",
|
|
|
|
.description = "SCCP User Adaptation",
|
|
|
|
},
|
2015-12-23 14:36:31 +00:00
|
|
|
[DRUA] = {
|
|
|
|
.name = "DRUA", .loglevel = LOGL_DEBUG, .enabled = 1,
|
|
|
|
.color = "",
|
|
|
|
.description = "RANAP User Adaptation",
|
|
|
|
},
|
|
|
|
[DRANAP] = {
|
|
|
|
.name = "DRANAP", .loglevel = LOGL_DEBUG, .enabled = 1,
|
|
|
|
.color = "",
|
|
|
|
.description = "RAN Application Part",
|
|
|
|
},
|
2015-08-30 10:20:09 +00:00
|
|
|
};
|
2015-08-29 19:47:39 +00:00
|
|
|
|
2015-08-30 10:20:09 +00:00
|
|
|
static const struct log_info hnbgw_log_info = {
|
|
|
|
.cat = log_cat,
|
|
|
|
.num_cat = ARRAY_SIZE(log_cat),
|
|
|
|
};
|
2015-08-29 19:47:39 +00:00
|
|
|
|
2015-08-30 10:20:09 +00:00
|
|
|
static struct vty_app_info vty_info = {
|
|
|
|
.name = "OsmoHNBGW",
|
|
|
|
.version = "0",
|
|
|
|
};
|
|
|
|
|
|
|
|
static int daemonize = 0;
|
|
|
|
|
2015-12-02 10:22:53 +00:00
|
|
|
static void vty_dump_hnb_info(struct vty *vty, struct hnb_context *hnb)
|
|
|
|
{
|
|
|
|
vty_out(vty, "HNB \"%s\" MCC %u MNC %u LAC %u RAC %u SAC %u CID %u%s", hnb->identity_info,
|
|
|
|
hnb->id.mcc, hnb->id.mnc, hnb->id.lac, hnb->id.rac, hnb->id.sac, hnb->id.cid,
|
|
|
|
VTY_NEWLINE);
|
|
|
|
vty_out(vty, " HNBAP ID %u RUA ID %u%s", hnb->hnbap_stream, hnb->rua_stream, VTY_NEWLINE);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void vty_dump_ue_info(struct vty *vty, struct ue_context *ue)
|
|
|
|
{
|
|
|
|
vty_out(vty, "UE IMSI \"%s\" context ID %u%s", ue->imsi, ue->context_id, VTY_NEWLINE);
|
|
|
|
}
|
|
|
|
|
|
|
|
DEFUN(show_hnb, show_hnb_cmd, "show hnb all", SHOW_STR "Display information about a HNB")
|
|
|
|
{
|
|
|
|
struct hnb_context *hnb;
|
|
|
|
|
2015-12-23 23:40:52 +00:00
|
|
|
llist_for_each_entry(hnb, &g_hnb_gw->hnb_list, list) {
|
2015-12-02 10:22:53 +00:00
|
|
|
vty_dump_hnb_info(vty, hnb);
|
|
|
|
}
|
|
|
|
|
|
|
|
return CMD_SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
DEFUN(show_ue, show_ue_cmd, "show ue all", SHOW_STR "Display information about a UE")
|
|
|
|
{
|
|
|
|
struct ue_context *ue;
|
|
|
|
|
2015-12-23 23:40:52 +00:00
|
|
|
llist_for_each_entry(ue, &g_hnb_gw->ue_list, list) {
|
2015-12-02 10:22:53 +00:00
|
|
|
vty_dump_ue_info(vty, ue);
|
|
|
|
}
|
|
|
|
|
|
|
|
return CMD_SUCCESS;
|
|
|
|
}
|
|
|
|
|
2015-12-17 17:02:37 +00:00
|
|
|
DEFUN(show_talloc, show_talloc_cmd, "show talloc", SHOW_STR "Display talloc info")
|
|
|
|
{
|
|
|
|
talloc_report_full(tall_hnb_ctx, stderr);
|
|
|
|
talloc_report_full(talloc_asn1_ctx, stderr);
|
|
|
|
|
|
|
|
return CMD_SUCCESS;
|
|
|
|
}
|
|
|
|
|
2015-12-02 10:22:53 +00:00
|
|
|
static void hnbgw_vty_init(void)
|
|
|
|
{
|
|
|
|
install_element_ve(&show_hnb_cmd);
|
|
|
|
install_element_ve(&show_ue_cmd);
|
2015-12-17 17:02:37 +00:00
|
|
|
install_element_ve(&show_talloc_cmd);
|
2015-12-02 10:22:53 +00:00
|
|
|
}
|
|
|
|
|
2015-08-30 10:20:09 +00:00
|
|
|
int main(int argc, char **argv)
|
2015-08-29 19:47:39 +00:00
|
|
|
{
|
2015-12-22 22:59:24 +00:00
|
|
|
struct osmo_sua_user *sua_user;
|
|
|
|
struct osmo_sua_link *sua_link;
|
2016-01-06 17:06:26 +00:00
|
|
|
struct osmo_stream_srv_link *srv;
|
2015-08-30 10:20:09 +00:00
|
|
|
int rc;
|
|
|
|
|
|
|
|
tall_hnb_ctx = talloc_named_const(NULL, 0, "hnb_context");
|
2015-08-31 07:54:45 +00:00
|
|
|
talloc_asn1_ctx = talloc_named_const(NULL, 0, "asn1_context");
|
2015-08-30 10:20:09 +00:00
|
|
|
|
2015-12-23 23:40:52 +00:00
|
|
|
g_hnb_gw = hnb_gw_create(tall_hnb_ctx);
|
2015-12-23 19:16:36 +00:00
|
|
|
|
2015-08-30 10:20:09 +00:00
|
|
|
rc = osmo_init_logging(&hnbgw_log_info);
|
|
|
|
if (rc < 0)
|
|
|
|
exit(1);
|
|
|
|
|
|
|
|
vty_init(&vty_info);
|
2015-12-02 10:22:53 +00:00
|
|
|
hnbgw_vty_init();
|
2015-08-30 10:20:09 +00:00
|
|
|
|
2015-12-23 23:40:52 +00:00
|
|
|
rc = telnet_init(NULL, g_hnb_gw, 2323);
|
2015-08-30 10:20:09 +00:00
|
|
|
if (rc < 0) {
|
|
|
|
perror("Error binding VTY port");
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
|
2015-12-22 22:59:24 +00:00
|
|
|
osmo_sua_set_log_area(DSUA);
|
2016-01-03 16:04:09 +00:00
|
|
|
ranap_set_log_area(DRANAP);
|
2015-12-22 22:59:24 +00:00
|
|
|
|
2015-12-23 23:40:52 +00:00
|
|
|
g_hnb_gw->cnlink_cs = hnbgw_cnlink_init(g_hnb_gw, "127.0.0.1", SUA_PORT);
|
|
|
|
g_hnb_gw->cnlink_ps = hnbgw_cnlink_init(g_hnb_gw, "127.0.0.2", SUA_PORT);
|
|
|
|
|
2016-01-06 17:06:26 +00:00
|
|
|
srv = osmo_stream_srv_link_create(tall_hnb_ctx);
|
|
|
|
if (!srv) {
|
|
|
|
perror("cannot create server");
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
osmo_stream_srv_link_set_data(srv, g_hnb_gw);
|
|
|
|
osmo_stream_srv_link_set_proto(srv, IPPROTO_SCTP);
|
|
|
|
osmo_stream_srv_link_set_addr(srv, "0.0.0.0");
|
|
|
|
osmo_stream_srv_link_set_port(srv, g_hnb_gw->config.iuh_listen_port);
|
|
|
|
osmo_stream_srv_link_set_accept_cb(srv, accept_cb);
|
|
|
|
|
|
|
|
if (osmo_stream_srv_link_open(srv) < 0) {
|
|
|
|
perror("Cannot oper server");
|
2015-08-30 10:20:09 +00:00
|
|
|
exit(1);
|
|
|
|
}
|
2016-01-06 17:06:26 +00:00
|
|
|
g_hnb_gw->iuh = srv;
|
2015-08-30 10:20:09 +00:00
|
|
|
|
|
|
|
if (daemonize) {
|
|
|
|
rc = osmo_daemonize();
|
|
|
|
if (rc < 0) {
|
|
|
|
perror("Error during daemonize");
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
rc = osmo_select_main(0);
|
|
|
|
if (rc < 0)
|
|
|
|
exit(3);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* not reached */
|
|
|
|
exit(0);
|
2015-08-29 19:47:39 +00:00
|
|
|
}
|