osmith has uploaded this change for review.
ipaccess-config: Use own e1_input ipaccess driver
Since osmo-bsc.git creation from openbsc.git around 10 years ago, a
reference was kept in osmo-bsc/ipaccess/ipaccess-config.c to ipa
specific code in the ipaccess e1_input stack of libosmo-abis.git
(ipaccess_fd_cb()).
Back at that time that was already considered to be an ugly hack, as
mentioned in include/osmocom/abis/ipaccess.h exporting that function.
This was done because ipaccess-config is quite different in several
aspects wrt to usual ipaccess based bts/osmo-bsc ipaccess lines:
* nanoBTS acts as TCP server and ipaccess-client as TCP client.
* TCP port 3006 is used instead of usual OML 3002.
* IPA handshake is actually also different, since despite nanoBTS being
the server it doesn't really trigger an IPA ID GET which need to
answer. Instead, upon ipaccess-config connecting, it will send an IPA
ID ACK and wait to receive an IP ID ACK itself before start
transmitting OML to ipaccess-config.
Due to all those differences, it really makes no sense to keep support
for this setup in the more usual bts<->bsc Abis e1line ipaccess driver
present in libosmo-abis.git.
Instead, this patch adds a new ipaccess-config-e1-driver.c which
implements a libosmo-abis e1_input line driver which works for this
specific service. libosmo-abis.git src/input/ipaccess.c from Change-Id
Idf241c8f2fdb86d090d4132a9b316b7236402232 is used as a base, further
simplifying it by removing stuff not really needed like BTS/BSC role,
tcp keepalive, tcp socket stats, etc.
Related: SYS#7063
Related: OS#5755
Related: OS#5756
Change-Id: I4d26876ce7d75a78f03c4fa66233550baf4fa7d5
(cherry picked from commit 76b863eb47ecaaf22fb4ca6ecd19f94a05b2ed5c)
---
M src/ipaccess/Makefile.am
A src/ipaccess/ipaccess-config-e1-driver.c
M src/ipaccess/ipaccess-config.c
3 files changed, 558 insertions(+), 57 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/50/39050/1
diff --git a/src/ipaccess/Makefile.am b/src/ipaccess/Makefile.am
index 9bd648d..52bfed4 100644
--- a/src/ipaccess/Makefile.am
+++ b/src/ipaccess/Makefile.am
@@ -41,6 +41,7 @@
ipaccess_config_SOURCES = \
ipaccess-config.c \
+ ipaccess-config-e1-driver.c \
ipaccess-firmware.c \
network_listen.c \
stubs.c \
diff --git a/src/ipaccess/ipaccess-config-e1-driver.c b/src/ipaccess/ipaccess-config-e1-driver.c
new file mode 100644
index 0000000..1303d43
--- /dev/null
+++ b/src/ipaccess/ipaccess-config-e1-driver.c
@@ -0,0 +1,544 @@
+/* OpenBSC Abis input driver for ip.access */
+
+/* (C) 2024 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
+ * (C) 2009-2021 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2010 by Holger Hans Peter Freyther
+ * (C) 2010 by On-Waves
+ *
+ * All Rights Reserved
+ *
+ * SPDX-License-Identifier: AGPL-3.0+
+ *
+ * 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 Affero 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <netinet/tcp.h>
+#include <string.h>
+#include <time.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <arpa/inet.h>
+
+#include <osmocom/core/select.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/macaddr.h>
+#include <osmocom/core/logging.h>
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/socket.h>
+#include <osmocom/core/backtrace.h>
+#include <osmocom/core/fsm.h>
+#include <osmocom/core/signal.h>
+#include <osmocom/gsm/tlv.h>
+#include <osmocom/gsm/protocol/ipaccess.h>
+#include <osmocom/gsm/ipa.h>
+#include <osmocom/netif/stream.h>
+#include <osmocom/netif/ipa.h>
+#include <osmocom/abis/e1_input.h>
+#include <osmocom/abis/ipa.h>
+
+/* default port at BTS for incoming connections */
+#define IPACCESS_BTS_LISTEN_OML_PORT 3006
+
+/* global parameters of IPA input driver */
+struct ipaccess_config_proto_pars {
+ uint8_t dscp;
+ uint8_t priority;
+};
+struct ipaccess_config_pars {
+ struct ipaccess_config_proto_pars oml;
+ struct ipaccess_config_proto_pars rsl;
+ char *connect_addr;
+};
+struct ipaccess_config_pars g_e1inp_ipaccess_config_pars;
+
+static void *tall_ipa_ctx;
+
+struct ipaccess_line {
+ bool line_already_initialized;
+ struct osmo_stream_cli *ipa_cli[NUM_E1_TS]; /* 0=OML, 1+N=TRX_N */
+};
+
+static int e1inp_int_snd_event(struct e1inp_ts *ts, struct e1inp_sign_link *link, int evt)
+{
+ struct input_signal_data isd;
+ isd.line = ts->line;
+ isd.ts_nr = ts->num;
+ isd.link_type = link->type;
+ isd.trx = link->trx;
+ isd.tei = link->tei;
+ isd.sapi = link->sapi;
+
+ /* report further upwards */
+ osmo_signal_dispatch(SS_L_INPUT, evt, &isd);
+ return 0;
+}
+
+static inline struct e1inp_ts *ipaccess_line_ts(struct osmo_fd *bfd, struct e1inp_line *line)
+{
+ if (bfd->priv_nr == E1INP_SIGN_OML)
+ return e1inp_line_ipa_oml_ts(line);
+ else
+ return e1inp_line_ipa_rsl_ts(line, bfd->priv_nr - E1INP_SIGN_RSL);
+}
+
+
+static void _ipaccess_bts_down_cb(struct osmo_stream_cli *cli)
+{
+ struct e1inp_ts *e1i_ts = osmo_stream_cli_get_data(cli);
+ struct e1inp_line *line = e1i_ts->line;
+
+ if (line->ops->sign_link_down)
+ line->ops->sign_link_down(line);
+}
+
+/* See how ts->num is assigned in e1inp_line_create: line->ts[i].num = i+1;
+* As per e1inp_line_ipa_oml_ts(), first TS in line (ts->num=1) is OML.
+* As per e1inp_line_ipa_rsl_ts(), second TS in line (ts->num>=2) is RSL.
+*/
+static inline enum e1inp_sign_type ipaccess_e1i_ts_sign_type(const struct e1inp_ts *e1i_ts)
+{
+ OSMO_ASSERT(e1i_ts->num != 0);
+ if (e1i_ts->num == 1)
+ return E1INP_SIGN_OML;
+ return E1INP_SIGN_RSL;
+}
+
+static inline unsigned int ipaccess_e1i_ts_trx_nr(const struct e1inp_ts *e1i_ts)
+{
+ enum e1inp_sign_type sign_type = ipaccess_e1i_ts_sign_type(e1i_ts);
+ if (sign_type == E1INP_SIGN_OML)
+ return 0; /* OML uses trx_nr=0 */
+ OSMO_ASSERT(sign_type == E1INP_SIGN_RSL);
+ /* e1i_ts->num >= 2: */
+ return e1i_ts->num - 2;
+}
+
+static inline struct osmo_stream_cli *ipaccess_bts_e1i_ts_stream_cli(const struct e1inp_ts *e1i_ts)
+{
+ OSMO_ASSERT(e1i_ts);
+ struct ipaccess_line *il = e1i_ts->line->driver_data;
+ OSMO_ASSERT(il);
+ struct osmo_stream_cli *cli = il->ipa_cli[e1i_ts->num - 1];
+ OSMO_ASSERT(cli);
+ return cli;
+}
+
+static void ipaccess_close(struct e1inp_sign_link *sign_link)
+{
+ struct e1inp_ts *e1i_ts = sign_link->ts;
+ struct osmo_fd *bfd = &e1i_ts->driver.ipaccess.fd;
+ struct osmo_stream_cli *cli;
+
+ e1inp_int_snd_event(e1i_ts, sign_link, S_L_INP_TEI_DN);
+ /* the first e1inp_sign_link_destroy call closes the socket. */
+
+ cli = ipaccess_bts_e1i_ts_stream_cli(e1i_ts);
+ osmo_stream_cli_close(cli);
+ bfd->fd = -1; /* Compatibility with older implementations */
+}
+
+static bool e1i_ts_has_pending_tx_msgs(struct e1inp_ts *e1i_ts)
+{
+ struct e1inp_sign_link *link;
+ llist_for_each_entry(link, &e1i_ts->sign.sign_links, list) {
+ if (!llist_empty(&link->tx_list))
+ return true;
+ }
+ return false;
+}
+
+static int ipaccess_bts_send_msg(struct e1inp_ts *e1i_ts,
+ struct e1inp_sign_link *sign_link,
+ struct osmo_stream_cli *cli,
+ struct msgb *msg)
+{
+ switch (sign_link->type) {
+ case E1INP_SIGN_OML:
+ case E1INP_SIGN_RSL:
+ case E1INP_SIGN_OSMO:
+ break;
+ default:
+ msgb_free(msg);
+ return -EINVAL;
+ }
+
+ msg->l2h = msg->data;
+ ipa_prepend_header(msg, sign_link->tei);
+
+ LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "TX: %s\n", osmo_hexdump(msg->l2h, msgb_l2len(msg)));
+ osmo_stream_cli_send(cli, msg);
+ return 0;
+}
+
+/* msg was enqueued in sign_link->tx_list.
+ * Pop it from that list, submit it to osmo_stream_cli: */
+static int ts_want_write(struct e1inp_ts *e1i_ts)
+{
+ int rc = 0;
+ struct osmo_stream_cli *cli = ipaccess_bts_e1i_ts_stream_cli(e1i_ts);
+
+ /* get the next msg for this timeslot */
+ while (e1i_ts_has_pending_tx_msgs(e1i_ts)) {
+ struct e1inp_sign_link *sign_link = NULL;
+ struct msgb *msg;
+ msg = e1inp_tx_ts(e1i_ts, &sign_link);
+ OSMO_ASSERT(msg);
+ OSMO_ASSERT(sign_link);
+ rc |= ipaccess_bts_send_msg(e1i_ts, sign_link, cli, msg);
+ }
+ return rc;
+}
+
+int ipaccess_bts_handle_ccm(struct ipa_client_conn *link,
+ struct ipaccess_unit *dev, struct msgb *msg)
+{
+ struct ipaccess_head *hh = (struct ipaccess_head *) msg->data;
+
+ /* special handling for IPA CCM. */
+ if (hh->proto != IPAC_PROTO_IPACCESS)
+ return 0;
+
+ int ret = 0;
+ uint8_t *data = msgb_l2(msg);
+ int len = msgb_l2len(msg);
+ OSMO_ASSERT(len > 0);
+ uint8_t msg_type = *data;
+ /* line might not exist if != bsc||bts */
+
+ /* ping, pong and acknowledgment cases. */
+ ret = ipa_ccm_rcvmsg_bts_base(msg, link->ofd);
+ if (ret < 0)
+ goto err;
+
+ /* this is a request for identification from the BSC. */
+ if (msg_type == IPAC_MSGT_ID_GET) {
+ struct msgb *rmsg;
+ /* The ipaccess_unit dev holds generic identity for the whole
+ * line, hence no trx_id. Patch ipaccess_unit during call to
+ * ipa_ccm_make_id_resp_from_req() to identify this TRX: */
+ int store_trx_nr = dev->trx_id;
+ if (link->ofd->priv_nr >= E1INP_SIGN_RSL)
+ dev->trx_id = link->ofd->priv_nr - E1INP_SIGN_RSL;
+ else
+ dev->trx_id = 0;
+ LOGP(DLINP, LOGL_NOTICE, "received ID_GET for unit ID %u/%u/%u\n",
+ dev->site_id, dev->bts_id, dev->trx_id);
+ rmsg = ipa_ccm_make_id_resp_from_req(dev, data + 1, len - 1);
+ dev->trx_id = store_trx_nr;
+ if (!rmsg) {
+ LOGP(DLINP, LOGL_ERROR, "Failed parsing ID_GET message.\n");
+ goto err;
+ }
+
+ ret = ipa_send(link->ofd->fd, rmsg->data, rmsg->len);
+ if (ret != rmsg->len) {
+ LOGP(DLINP, LOGL_ERROR, "cannot send ID_RESP message. Reason: %s\n",
+ strerror(errno));
+ msgb_free(rmsg);
+ goto err;
+ }
+ msgb_free(rmsg);
+
+ /* send ID_ACK. */
+ ret = ipa_ccm_send_id_ack(link->ofd->fd);
+ if (ret <= 0) {
+ LOGP(DLINP, LOGL_ERROR, "cannot send ID_ACK message. Reason: %s\n",
+ strerror(errno));
+ goto err;
+ }
+ }
+ return 1;
+
+err:
+ ipa_client_conn_close(link);
+ return -1;
+}
+
+static struct msgb *ipa_bts_id_ack(void)
+{
+ struct msgb *nmsg2;
+ nmsg2 = ipa_msg_alloc(0);
+ if (!nmsg2)
+ return NULL;
+ msgb_v_put(nmsg2, IPAC_MSGT_ID_ACK);
+ ipa_prepend_header(nmsg2, IPAC_PROTO_IPACCESS);
+ return nmsg2;
+}
+
+static void update_fd_settings(struct e1inp_line *line, int fd)
+{
+ int ret;
+ int val;
+
+ val = 1;
+ ret = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
+ if (ret < 0)
+ LOGPIL(line, DLINP, LOGL_ERROR, "Failed to set TCP_NODELAY: %s\n", strerror(errno));
+}
+
+/* Same as ipaccess_bts_handle_ccm(), but using an osmo_stream_cli as backend
+ * instead of ipa_client_conn.
+ * The old ipaccess_bts_handle_ccm() needs to be kept as it's a public API. */
+static int _ipaccess_bts_handle_ccm(struct osmo_stream_cli *cli,
+ struct ipaccess_unit *dev, struct msgb *msg)
+{
+ /* special handling for IPA CCM. */
+ if (osmo_ipa_msgb_cb_proto(msg) != IPAC_PROTO_IPACCESS)
+ return 0;
+
+ int ret = 0;
+ const uint8_t *data = msgb_l2(msg);
+ int len = msgb_l2len(msg);
+ OSMO_ASSERT(len > 0);
+ uint8_t msg_type = *data;
+ struct e1inp_ts *e1i_ts = osmo_stream_cli_get_data(cli);
+ /* line might not exist if != bsc||bts */
+
+ /* ping, pong and acknowledgment cases. */
+ struct osmo_fd tmp_ofd = { .fd = osmo_stream_cli_get_fd(cli) };
+ OSMO_ASSERT(tmp_ofd.fd >= 0);
+ ret = ipa_ccm_rcvmsg_bts_base(msg, &tmp_ofd);
+ if (ret < 0)
+ goto err;
+
+ /* this is a request for identification from the BSC. */
+ if (msg_type == IPAC_MSGT_ID_GET) {
+ struct msgb *rmsg;
+ /* The ipaccess_unit dev holds generic identity for the whole
+ * line, hence no trx_id. Patch ipaccess_unit during call to
+ * ipa_ccm_make_id_resp_from_req() to identify this TRX: */
+ int store_trx_nr = dev->trx_id;
+ dev->trx_id = ipaccess_e1i_ts_trx_nr(e1i_ts);
+ LOGP(DLINP, LOGL_NOTICE, "received ID_GET for unit ID %u/%u/%u\n",
+ dev->site_id, dev->bts_id, dev->trx_id);
+ rmsg = ipa_ccm_make_id_resp_from_req(dev, data + 1, len - 1);
+ dev->trx_id = store_trx_nr;
+ if (!rmsg) {
+ LOGP(DLINP, LOGL_ERROR, "Failed parsing ID_GET message.\n");
+ goto err;
+ }
+ osmo_stream_cli_send(cli, rmsg);
+
+ /* send ID_ACK. */
+ rmsg = ipa_bts_id_ack();
+ if (!rmsg) {
+ LOGP(DLINP, LOGL_ERROR, "Failed allocating ID_ACK message.\n");
+ goto err;
+ }
+ osmo_stream_cli_send(cli, rmsg);
+ }
+ return 1;
+
+err:
+ return -1;
+}
+
+static int ipaccess_bts_read_cb(struct osmo_stream_cli *cli, int res, struct msgb *msg)
+{
+ enum ipaccess_proto ipa_proto = osmo_ipa_msgb_cb_proto(msg);
+ struct e1inp_ts *e1i_ts = osmo_stream_cli_get_data(cli);
+ struct e1inp_line *line = e1i_ts->line;
+ struct e1inp_sign_link *sign_link;
+ int ret;
+
+ if (res <= 0) {
+ LOGPITS(e1i_ts, DLINP, LOGL_NOTICE, "failed reading from socket: %d\n", res);
+ goto err;
+ }
+
+ /* special handling for IPA CCM. */
+ if (ipa_proto == IPAC_PROTO_IPACCESS) {
+ uint8_t msg_type = *(msg->l2h);
+ /* this is a request for identification from the BSC. */
+ if (msg_type == IPAC_MSGT_ID_GET) {
+ if (!line->ops->sign_link_up) {
+ LOGPITS(e1i_ts, DLINP, LOGL_NOTICE,
+ "Unable to set signal link, closing socket.\n");
+ goto err;
+ }
+ }
+ }
+
+ /* core CCM handling */
+ ret = _ipaccess_bts_handle_ccm(cli, line->ops->cfg.ipa.dev, msg);
+ if (ret < 0)
+ goto err;
+
+ if (ret == 1 && ipa_proto == IPAC_PROTO_IPACCESS) {
+ uint8_t msg_type = *(msg->l2h);
+ if (msg_type == IPAC_MSGT_ID_GET) {
+ enum e1inp_sign_type sign_type = ipaccess_e1i_ts_sign_type(e1i_ts);
+ unsigned int trx_nr = ipaccess_e1i_ts_trx_nr(e1i_ts);
+ sign_link = line->ops->sign_link_up(line->ops->cfg.ipa.dev,
+ line, sign_type + trx_nr);
+ if (sign_link == NULL) {
+ LOGPITS(e1i_ts, DLINP, LOGL_NOTICE,
+ "Unable to set signal link, closing socket.\n");
+ goto err;
+ }
+ }
+ msgb_free(msg);
+ return ret;
+ }
+
+ /* look up for some existing signaling link. */
+ sign_link = e1inp_lookup_sign_link(e1i_ts, ipa_proto, 0);
+ if (sign_link == NULL) {
+ LOGPITS(e1i_ts, DLINP, LOGL_ERROR, "no matching signalling link for "
+ "ipa_proto=0x%02x\n", ipa_proto);
+ goto err;
+ }
+ msg->dst = sign_link;
+
+ /* XXX better use e1inp_ts_rx? */
+ if (!line->ops->sign_link) {
+ LOGPITS(e1i_ts, DLINP, LOGL_ERROR, "Fix your application, "
+ "no action set for signalling messages.\n");
+ goto err;
+ }
+ return line->ops->sign_link(msg);
+
+err:
+ msgb_free(msg);
+ osmo_stream_cli_close(cli);
+ return -EBADF;
+}
+
+static int ipaccess_bts_connect_cb(struct osmo_stream_cli *cli)
+{
+ struct e1inp_ts *e1i_ts = osmo_stream_cli_get_data(cli);
+ struct e1inp_line *line = e1i_ts->line;
+ struct msgb *rmsg;
+
+ update_fd_settings(line, osmo_stream_cli_get_fd(cli));
+
+ /* send ID_ACK. */
+ rmsg = ipa_bts_id_ack();
+ if (!rmsg) {
+ LOGP(DLINP, LOGL_ERROR, "Failed allocating ID_ACK message.\n");
+ return 0;
+ }
+ osmo_stream_cli_send(cli, rmsg);
+ return 0;
+}
+
+static int ipaccess_bts_disconnect_cb(struct osmo_stream_cli *cli)
+{
+ _ipaccess_bts_down_cb(cli);
+ return 0;
+}
+
+static int ipaccess_line_update(struct e1inp_line *line)
+{
+ int ret = -ENOENT;
+ struct ipaccess_line *il;
+
+ if (!line->driver_data)
+ line->driver_data = talloc_zero(line, struct ipaccess_line);
+
+ if (!line->driver_data) {
+ LOGPIL(line, DLINP, LOGL_ERROR, "ipaccess: OOM in line update\n");
+ return -ENOMEM;
+ }
+ il = line->driver_data;
+
+ /* We only initialize this line once. */
+ if (il->line_already_initialized)
+ return 0;
+
+ struct osmo_stream_cli *cli;
+ struct e1inp_ts *e1i_ts = e1inp_line_ipa_oml_ts(line);
+ char cli_name[128];
+
+ LOGPITS(e1i_ts, DLINP, LOGL_NOTICE, "enabling ipaccess BTS mode, "
+ "OML connecting to %s:%u\n", g_e1inp_ipaccess_config_pars.connect_addr, IPACCESS_BTS_LISTEN_OML_PORT);
+
+ /* Drop previous line */
+ if (il->ipa_cli[0]) {
+ osmo_stream_cli_close(il->ipa_cli[0]);
+ e1i_ts->driver.ipaccess.fd.fd = -1;
+ osmo_stream_cli_destroy(il->ipa_cli[0]);
+ il->ipa_cli[0] = NULL;
+ }
+
+ e1inp_ts_config_sign(e1i_ts, line);
+
+ cli = osmo_stream_cli_create(tall_ipa_ctx);
+ OSMO_ASSERT(cli);
+
+ snprintf(cli_name, sizeof(cli_name), "ts-%u-%u-oml", line->num, e1i_ts->num);
+ osmo_stream_cli_set_name(cli, cli_name);
+ osmo_stream_cli_set_data(cli, e1i_ts);
+ osmo_stream_cli_set_addr(cli, g_e1inp_ipaccess_config_pars.connect_addr);
+ osmo_stream_cli_set_port(cli, IPACCESS_BTS_LISTEN_OML_PORT);
+ osmo_stream_cli_set_proto(cli, IPPROTO_TCP);
+ osmo_stream_cli_set_nodelay(cli, true);
+ osmo_stream_cli_set_priority(cli, g_e1inp_ipaccess_config_pars.oml.dscp);
+ osmo_stream_cli_set_ip_dscp(cli, g_e1inp_ipaccess_config_pars.oml.priority);
+
+ /* Reconnect is handled by upper layers: */
+ osmo_stream_cli_set_reconnect_timeout(cli, -1);
+
+ osmo_stream_cli_set_segmentation_cb(cli, osmo_ipa_segmentation_cb);
+ osmo_stream_cli_set_connect_cb(cli, ipaccess_bts_connect_cb);
+ osmo_stream_cli_set_disconnect_cb(cli, ipaccess_bts_disconnect_cb);
+ osmo_stream_cli_set_read_cb2(cli, ipaccess_bts_read_cb);
+
+ if (osmo_stream_cli_open(cli)) {
+ LOGPITS(e1i_ts, DLINP, LOGL_ERROR, "cannot open OML BTS link: %s\n", strerror(errno));
+ osmo_stream_cli_destroy(cli);
+ return -EIO;
+ }
+
+ /* Compatibility with older ofd based implementation. osmo-bts accesses
+ * this fd directly in get_signlink_remote_ip() and get_rsl_local_ip() */
+ e1i_ts->driver.ipaccess.fd.fd = osmo_stream_cli_get_fd(cli);
+
+ il->ipa_cli[0] = cli;
+ ret = 0;
+
+ il->line_already_initialized = true;
+ return ret;
+}
+
+static struct e1inp_driver ipaccess_config_driver = {
+ .name = "ipaccess-config",
+ .want_write = ts_want_write,
+ .line_update = ipaccess_line_update,
+ .close = ipaccess_close,
+ .default_delay = 0,
+ .has_keepalive = 0,
+};
+
+void e1inp_ipaccess_config_init(void *ctx)
+{
+ tall_ipa_ctx = talloc_named_const(ctx, 1, "ipaccess-config");
+ e1inp_driver_register(&ipaccess_config_driver);
+
+ g_e1inp_ipaccess_config_pars.connect_addr = talloc_strdup(tall_ipa_ctx, "127.0.0.1");
+}
+
+void e1inp_ipaccess_config_set_connect_addr(const char *connect_addr)
+{
+ osmo_talloc_replace_string(tall_ipa_ctx,
+ &g_e1inp_ipaccess_config_pars.connect_addr,
+ connect_addr);
+}
diff --git a/src/ipaccess/ipaccess-config.c b/src/ipaccess/ipaccess-config.c
index 15dcc54..a576ebc 100644
--- a/src/ipaccess/ipaccess-config.c
+++ b/src/ipaccess/ipaccess-config.c
@@ -79,53 +79,15 @@
static struct abis_nm_sw_desc *sw_load1 = NULL;
static struct abis_nm_sw_desc *sw_load2 = NULL;
-extern int ipaccess_fd_cb(struct osmo_fd *bfd, unsigned int what);
extern struct e1inp_line_ops ipaccess_e1inp_line_ops;
-/* Actively connect to a BTS. Currently used by ipaccess-config.c */
-static int ipaccess_connect(struct e1inp_line *line, struct sockaddr_in *sa)
-{
- struct e1inp_ts *e1i_ts = &line->ts[0];
- struct osmo_fd *bfd = &e1i_ts->driver.ipaccess.fd;
- int ret, on = 1;
+/* Functions from ipaccess-config-e1-driver.c: */
+extern void e1inp_ipaccess_config_init(void *ctx);
+extern void e1inp_ipaccess_config_set_connect_addr(const char *connect_addr);
- bfd->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
- bfd->cb = ipaccess_fd_cb;
- bfd->when = OSMO_FD_READ | OSMO_FD_WRITE;
- bfd->data = line;
- bfd->priv_nr = E1INP_SIGN_OML;
-
- if (bfd->fd < 0) {
- LOGP(DLINP, LOGL_ERROR, "could not create TCP socket.\n");
- return -EIO;
- }
-
- ret = setsockopt(bfd->fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
- if (ret < 0) {
- LOGP(DLINP, LOGL_ERROR, "could not set socket option\n");
- close(bfd->fd);
- return -EIO;
- }
-
- ret = connect(bfd->fd, (struct sockaddr *) sa, sizeof(*sa));
- if (ret < 0) {
- LOGP(DLINP, LOGL_ERROR, "could not connect socket\n");
- close(bfd->fd);
- return ret;
- }
-
- ret = osmo_fd_register(bfd);
- if (ret < 0) {
- LOGP(DLINP, LOGL_ERROR, "unable to register socket fd\n");
- close(bfd->fd);
- return ret;
- }
- return ret;
- //return e1inp_line_register(line);
-}
/* configure pseudo E1 line in ip.access style and connect to BTS */
-static int ia_config_connect(struct gsm_bts *bts, struct sockaddr_in *sin)
+static int ia_config_connect(struct gsm_bts *bts, const char *bts_ip)
{
struct e1inp_line *line;
struct e1inp_ts *sign_ts, *rsl_ts;
@@ -135,13 +97,17 @@
if (!line)
return -ENOMEM;
- line->driver = e1inp_driver_find("ipa");
- if (!line->driver) {
- fprintf(stderr, "cannot `ipa' driver, giving up.\n");
+ e1inp_ipaccess_config_init(tall_bsc_ctx);
+ e1inp_ipaccess_config_set_connect_addr(bts_ip);
+
+ line = e1inp_line_create(0, "ipaccess-config");
+ if (!line) {
+ fprintf(stderr, "cannot create line with `ipaccess-config' driver, giving up.\n");
return -EINVAL;
}
e1inp_line_bind_ops(line, &ipaccess_e1inp_line_ops);
e1_set_pcap_fd2(line, -1); /* Disable writing to pcap */
+ e1inp_line_update(line);
sign_ts = e1inp_line_ipa_oml_ts(line);
rsl_ts = e1inp_line_ipa_rsl_ts(line, 0);
@@ -164,11 +130,7 @@
bts->osmo_link = osmo_link;
bts->c0->rsl_link_primary = rsl_link;
- /* default port at BTS for incoming connections is 3006 */
- if (sin->sin_port == 0)
- sin->sin_port = htons(3006);
-
- return ipaccess_connect(line, sin);
+ return 0;
}
/*
@@ -1030,7 +992,6 @@
int main(int argc, char **argv)
{
struct gsm_bts *bts;
- struct sockaddr_in sin;
char *bts_ip;
int rc, option_index = 0, stream_id = 0xff;
@@ -1203,17 +1164,12 @@
if (!quiet)
printf("Trying to connect to ip.access BTS %s...\n", bts_ip);
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
- inet_aton(bts_ip, &sin.sin_addr);
- rc = ia_config_connect(bts, &sin);
+ rc = ia_config_connect(bts, bts_ip);
if (rc < 0) {
perror("Error connecting to the BTS");
exit(1);
}
- bts->oml_link->ts->sign.delay = 10;
- bts->c0->rsl_link_primary->ts->sign.delay = 10;
while (1) {
rc = osmo_select_main(0);
if (rc < 0)
To view, visit change 39050. To unsubscribe, or for help writing mail filters, visit settings.