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-rw-r--r--src/libbsc/bts_ipaccess_nanobts.c520
1 files changed, 520 insertions, 0 deletions
diff --git a/src/libbsc/bts_ipaccess_nanobts.c b/src/libbsc/bts_ipaccess_nanobts.c
new file mode 100644
index 000000000..a1bde778f
--- /dev/null
+++ b/src/libbsc/bts_ipaccess_nanobts.c
@@ -0,0 +1,520 @@
+/* ip.access nanoBTS specific code */
+
+/* (C) 2009-2010 by Harald Welte <laforge@gnumonks.org>
+ *
+ * All Rights Reserved
+ *
+ * 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 <arpa/inet.h>
+
+#include <osmocom/gsm/tlv.h>
+
+#include <openbsc/gsm_data.h>
+#include <openbsc/signal.h>
+#include <openbsc/abis_nm.h>
+#include <osmocom/abis/e1_input.h>
+#include <osmocom/gsm/tlv.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/talloc.h>
+#include <openbsc/gsm_data.h>
+#include <openbsc/abis_nm.h>
+#include <openbsc/abis_rsl.h>
+#include <openbsc/debug.h>
+#include <osmocom/abis/subchan_demux.h>
+#include <osmocom/gsm/ipa.h>
+#include <osmocom/abis/ipaccess.h>
+#include <osmocom/core/logging.h>
+#include <openbsc/ipaccess.h>
+#include <openbsc/bts_ipaccess_nanobts_omlattr.h>
+
+extern struct gsm_network *bsc_gsmnet;
+
+static int bts_model_nanobts_start(struct gsm_network *net);
+static void bts_model_nanobts_e1line_bind_ops(struct e1inp_line *line);
+
+struct gsm_bts_model bts_model_nanobts = {
+ .type = GSM_BTS_TYPE_NANOBTS,
+ .name = "nanobts",
+ .start = bts_model_nanobts_start,
+ .oml_rcvmsg = &abis_nm_rcvmsg,
+ .e1line_bind_ops = bts_model_nanobts_e1line_bind_ops,
+ .nm_att_tlvdef = {
+ .def = {
+ /* ip.access specifics */
+ [NM_ATT_IPACC_DST_IP] = { TLV_TYPE_FIXED, 4 },
+ [NM_ATT_IPACC_DST_IP_PORT] = { TLV_TYPE_FIXED, 2 },
+ [NM_ATT_IPACC_STREAM_ID] = { TLV_TYPE_TV, },
+ [NM_ATT_IPACC_SEC_OML_CFG] = { TLV_TYPE_FIXED, 6 },
+ [NM_ATT_IPACC_IP_IF_CFG] = { TLV_TYPE_FIXED, 8 },
+ [NM_ATT_IPACC_IP_GW_CFG] = { TLV_TYPE_FIXED, 12 },
+ [NM_ATT_IPACC_IN_SERV_TIME] = { TLV_TYPE_FIXED, 4 },
+ [NM_ATT_IPACC_LOCATION] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_PAGING_CFG] = { TLV_TYPE_FIXED, 2 },
+ [NM_ATT_IPACC_UNIT_ID] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_UNIT_NAME] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_SNMP_CFG] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_PRIM_OML_CFG_LIST] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_NV_FLAGS] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_FREQ_CTRL] = { TLV_TYPE_FIXED, 2 },
+ [NM_ATT_IPACC_PRIM_OML_FB_TOUT] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_CUR_SW_CFG] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_TIMING_BUS] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_CGI] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_RAC] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_OBJ_VERSION] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_GPRS_PAGING_CFG]= { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_NSEI] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_BVCI] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_NSVCI] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_NS_CFG] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_BSSGP_CFG] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_NS_LINK_CFG] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_RLC_CFG] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_ALM_THRESH_LIST]= { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_MONIT_VAL_LIST] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_TIB_CONTROL] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_SUPP_FEATURES] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_CODING_SCHEMES] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_RLC_CFG_2] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_HEARTB_TOUT] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_UPTIME] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_RLC_CFG_3] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_SSL_CFG] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_SEC_POSSIBLE] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_IML_SSL_STATE] = { TLV_TYPE_TL16V },
+ [NM_ATT_IPACC_REVOC_DATE] = { TLV_TYPE_TL16V },
+ },
+ },
+};
+
+
+/* Callback function to be called whenever we get a GSM 12.21 state change event */
+static int nm_statechg_event(int evt, struct nm_statechg_signal_data *nsd)
+{
+ uint8_t obj_class = nsd->obj_class;
+ void *obj = nsd->obj;
+ struct gsm_nm_state *new_state = nsd->new_state;
+
+ struct gsm_bts *bts;
+ struct gsm_bts_trx *trx;
+ struct gsm_bts_trx_ts *ts;
+ struct gsm_bts_gprs_nsvc *nsvc;
+
+ struct msgb *msgb;
+
+ if (!is_ipaccess_bts(nsd->bts))
+ return 0;
+
+ /* This event-driven BTS setup is currently only required on nanoBTS */
+
+ /* S_NM_STATECHG_ADM is called after we call chg_adm_state() and would create
+ * endless loop */
+ if (evt != S_NM_STATECHG_OPER)
+ return 0;
+
+ switch (obj_class) {
+ case NM_OC_SITE_MANAGER:
+ bts = container_of(obj, struct gsm_bts, site_mgr);
+ if ((new_state->operational == NM_OPSTATE_ENABLED &&
+ new_state->availability == NM_AVSTATE_OK) ||
+ (new_state->operational == NM_OPSTATE_DISABLED &&
+ new_state->availability == NM_AVSTATE_OFF_LINE))
+ abis_nm_opstart(bts, obj_class, 0xff, 0xff, 0xff);
+ break;
+ case NM_OC_BTS:
+ bts = obj;
+ if (new_state->availability == NM_AVSTATE_DEPENDENCY) {
+ msgb = nanobts_attr_bts_get(bts);
+ abis_nm_set_bts_attr(bts, msgb->data, msgb->len);
+ msgb_free(msgb);
+ abis_nm_chg_adm_state(bts, obj_class,
+ bts->bts_nr, 0xff, 0xff,
+ NM_STATE_UNLOCKED);
+ abis_nm_opstart(bts, obj_class,
+ bts->bts_nr, 0xff, 0xff);
+ }
+ break;
+ case NM_OC_CHANNEL:
+ ts = obj;
+ trx = ts->trx;
+ if (new_state->operational == NM_OPSTATE_DISABLED &&
+ new_state->availability == NM_AVSTATE_DEPENDENCY) {
+ enum abis_nm_chan_comb ccomb =
+ abis_nm_chcomb4pchan(ts->pchan);
+ if (abis_nm_set_channel_attr(ts, ccomb) == -EINVAL) {
+ ipaccess_drop_oml(trx->bts);
+ return -1;
+ }
+ abis_nm_chg_adm_state(trx->bts, obj_class,
+ trx->bts->bts_nr, trx->nr, ts->nr,
+ NM_STATE_UNLOCKED);
+ abis_nm_opstart(trx->bts, obj_class,
+ trx->bts->bts_nr, trx->nr, ts->nr);
+ }
+ if (new_state->operational == NM_OPSTATE_ENABLED
+ && new_state->availability == NM_AVSTATE_OK)
+ dyn_ts_init(ts);
+ break;
+ case NM_OC_RADIO_CARRIER:
+ trx = obj;
+ if (new_state->operational == NM_OPSTATE_DISABLED &&
+ new_state->availability == NM_AVSTATE_OK)
+ abis_nm_opstart(trx->bts, obj_class, trx->bts->bts_nr,
+ trx->nr, 0xff);
+ break;
+ case NM_OC_GPRS_NSE:
+ bts = container_of(obj, struct gsm_bts, gprs.nse);
+ if (bts->gprs.mode == BTS_GPRS_NONE)
+ break;
+ if (new_state->availability == NM_AVSTATE_DEPENDENCY) {
+ msgb = nanobts_attr_nse_get(bts);
+ abis_nm_ipaccess_set_attr(bts, obj_class, bts->bts_nr,
+ 0xff, 0xff, msgb->data,
+ msgb->len);
+ msgb_free(msgb);
+ abis_nm_opstart(bts, obj_class, bts->bts_nr,
+ 0xff, 0xff);
+ }
+ break;
+ case NM_OC_GPRS_CELL:
+ bts = container_of(obj, struct gsm_bts, gprs.cell);
+ if (bts->gprs.mode == BTS_GPRS_NONE)
+ break;
+ if (new_state->availability == NM_AVSTATE_DEPENDENCY) {
+ msgb = nanobts_attr_cell_get(bts);
+ abis_nm_ipaccess_set_attr(bts, obj_class, bts->bts_nr,
+ 0, 0xff, msgb->data,
+ msgb->len);
+ msgb_free(msgb);
+ abis_nm_opstart(bts, obj_class, bts->bts_nr,
+ 0, 0xff);
+ abis_nm_chg_adm_state(bts, obj_class, bts->bts_nr,
+ 0, 0xff, NM_STATE_UNLOCKED);
+ abis_nm_chg_adm_state(bts, NM_OC_GPRS_NSE, bts->bts_nr,
+ 0xff, 0xff, NM_STATE_UNLOCKED);
+ }
+ break;
+ case NM_OC_GPRS_NSVC:
+ nsvc = obj;
+ bts = nsvc->bts;
+ if (bts->gprs.mode == BTS_GPRS_NONE)
+ break;
+ /* We skip NSVC1 since we only use NSVC0 */
+ if (nsvc->id == 1)
+ break;
+ if ((new_state->availability == NM_AVSTATE_OFF_LINE) ||
+ (new_state->availability == NM_AVSTATE_DEPENDENCY)) {
+ msgb = nanobts_attr_nscv_get(bts);
+ abis_nm_ipaccess_set_attr(bts, obj_class, bts->bts_nr,
+ nsvc->id, 0xff,
+ msgb->data, msgb->len);
+ msgb_free(msgb);
+ abis_nm_opstart(bts, obj_class, bts->bts_nr,
+ nsvc->id, 0xff);
+ abis_nm_chg_adm_state(bts, obj_class, bts->bts_nr,
+ nsvc->id, 0xff,
+ NM_STATE_UNLOCKED);
+ }
+ default:
+ break;
+ }
+ return 0;
+}
+
+/* Callback function to be called every time we receive a 12.21 SW activated report */
+static int sw_activ_rep(struct msgb *mb)
+{
+ struct abis_om_fom_hdr *foh = msgb_l3(mb);
+ struct e1inp_sign_link *sign_link = mb->dst;
+ struct gsm_bts *bts = sign_link->trx->bts;
+ struct gsm_bts_trx *trx = gsm_bts_trx_num(bts, foh->obj_inst.trx_nr);
+
+ if (!trx)
+ return -EINVAL;
+
+ if (!is_ipaccess_bts(trx->bts))
+ return 0;
+
+ switch (foh->obj_class) {
+ case NM_OC_BASEB_TRANSC:
+ abis_nm_chg_adm_state(trx->bts, foh->obj_class,
+ trx->bts->bts_nr, trx->nr, 0xff,
+ NM_STATE_UNLOCKED);
+ abis_nm_opstart(trx->bts, foh->obj_class,
+ trx->bts->bts_nr, trx->nr, 0xff);
+ /* TRX software is active, tell it to initiate RSL Link */
+ abis_nm_ipaccess_rsl_connect(trx, trx->bts->ip_access.rsl_ip,
+ 3003, trx->rsl_tei);
+ break;
+ case NM_OC_RADIO_CARRIER: {
+ /*
+ * Locking the radio carrier will make it go
+ * offline again and we would come here. The
+ * framework should determine that there was
+ * no change and avoid recursion.
+ *
+ * This code is here to make sure that on start
+ * a TRX remains locked.
+ */
+ int rc_state = trx->mo.nm_state.administrative;
+ /* Patch ARFCN into radio attribute */
+ struct msgb *msgb = nanobts_attr_radio_get(trx->bts, trx);
+ abis_nm_set_radio_attr(trx, msgb->data, msgb->len);
+ msgb_free(msgb);
+ abis_nm_chg_adm_state(trx->bts, foh->obj_class,
+ trx->bts->bts_nr, trx->nr, 0xff,
+ rc_state);
+ abis_nm_opstart(trx->bts, foh->obj_class, trx->bts->bts_nr,
+ trx->nr, 0xff);
+ break;
+ }
+ }
+ return 0;
+}
+
+/* Callback function to be called every time we receive a signal from NM */
+static int bts_ipa_nm_sig_cb(unsigned int subsys, unsigned int signal,
+ void *handler_data, void *signal_data)
+{
+ if (subsys != SS_NM)
+ return 0;
+
+ switch (signal) {
+ case S_NM_SW_ACTIV_REP:
+ return sw_activ_rep(signal_data);
+ case S_NM_STATECHG_OPER:
+ case S_NM_STATECHG_ADM:
+ return nm_statechg_event(signal, signal_data);
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int bts_model_nanobts_start(struct gsm_network *net)
+{
+ osmo_signal_unregister_handler(SS_NM, bts_ipa_nm_sig_cb, NULL);
+ osmo_signal_register_handler(SS_NM, bts_ipa_nm_sig_cb, NULL);
+ return 0;
+}
+
+int bts_model_nanobts_init(void)
+{
+ bts_model_nanobts.features.data = &bts_model_nanobts._features_data[0];
+ bts_model_nanobts.features.data_len =
+ sizeof(bts_model_nanobts._features_data);
+
+ gsm_btsmodel_set_feature(&bts_model_nanobts, BTS_FEAT_GPRS);
+ gsm_btsmodel_set_feature(&bts_model_nanobts, BTS_FEAT_EGPRS);
+ gsm_btsmodel_set_feature(&bts_model_nanobts, BTS_FEAT_MULTI_TSC);
+
+ return gsm_bts_model_register(&bts_model_nanobts);
+}
+
+#define OML_UP 0x0001
+#define RSL_UP 0x0002
+
+static struct gsm_bts *
+find_bts_by_unitid(struct gsm_network *net, uint16_t site_id, uint16_t bts_id)
+{
+ struct gsm_bts *bts;
+
+ llist_for_each_entry(bts, &net->bts_list, list) {
+ if (!is_ipaccess_bts(bts))
+ continue;
+
+ if (bts->ip_access.site_id == site_id &&
+ bts->ip_access.bts_id == bts_id)
+ return bts;
+ }
+ return NULL;
+}
+
+/* These are exported because they are used by the VTY interface. */
+void ipaccess_drop_rsl(struct gsm_bts_trx *trx)
+{
+ if (!trx->rsl_link)
+ return;
+
+ e1inp_sign_link_destroy(trx->rsl_link);
+ trx->rsl_link = NULL;
+}
+
+void ipaccess_drop_oml(struct gsm_bts *bts)
+{
+ struct gsm_bts *rdep_bts;
+ struct gsm_bts_trx *trx;
+
+ if (!bts->oml_link)
+ return;
+
+ e1inp_sign_link_destroy(bts->oml_link);
+ bts->oml_link = NULL;
+
+ /* we have issues reconnecting RSL, drop everything. */
+ llist_for_each_entry(trx, &bts->trx_list, list)
+ ipaccess_drop_rsl(trx);
+
+ bts->ip_access.flags = 0;
+
+ /*
+ * Go through the list and see if we are the depndency of a BTS
+ * and then drop the BTS. This can lead to some recursion but it
+ * should be fine in userspace.
+ * The oml_link is serving as recursion anchor for us and
+ * it is set to NULL some lines above.
+ */
+ llist_for_each_entry(rdep_bts, &bts->network->bts_list, list) {
+ if (!bts_depend_is_depedency(rdep_bts, bts))
+ continue;
+ LOGP(DLINP, LOGL_NOTICE, "Dropping BTS(%u) due BTS(%u).\n",
+ rdep_bts->nr, bts->nr);
+ ipaccess_drop_oml(rdep_bts);
+ }
+}
+
+/* This function is called once the OML/RSL link becomes up. */
+static struct e1inp_sign_link *
+ipaccess_sign_link_up(void *unit_data, struct e1inp_line *line,
+ enum e1inp_sign_type type)
+{
+ struct gsm_bts *bts;
+ struct ipaccess_unit *dev = unit_data;
+ struct e1inp_sign_link *sign_link = NULL;
+
+ bts = find_bts_by_unitid(bsc_gsmnet, dev->site_id, dev->bts_id);
+ if (!bts) {
+ LOGP(DLINP, LOGL_ERROR, "Unable to find BTS configuration for "
+ " %u/%u/%u, disconnecting\n", dev->site_id,
+ dev->bts_id, dev->trx_id);
+ return NULL;
+ }
+ DEBUGP(DLINP, "Identified BTS %u/%u/%u\n",
+ dev->site_id, dev->bts_id, dev->trx_id);
+
+ switch(type) {
+ case E1INP_SIGN_OML:
+ /* remove old OML signal link for this BTS. */
+ ipaccess_drop_oml(bts);
+
+ if (!bts_depend_check(bts)) {
+ LOGP(DLINP, LOGL_NOTICE,
+ "Dependency not full-filled for %u/%u/%u\n",
+ dev->site_id, dev->bts_id, dev->trx_id);
+ return NULL;
+ }
+
+ /* create new OML link. */
+ sign_link = bts->oml_link =
+ e1inp_sign_link_create(&line->ts[E1INP_SIGN_OML - 1],
+ E1INP_SIGN_OML, bts->c0,
+ bts->oml_tei, 0);
+ break;
+ case E1INP_SIGN_RSL: {
+ struct e1inp_ts *ts;
+ struct gsm_bts_trx *trx = gsm_bts_trx_num(bts, dev->trx_id);
+
+ /* no OML link set yet? give up. */
+ if (!bts->oml_link || !trx)
+ return NULL;
+
+ /* remove old RSL link for this TRX. */
+ ipaccess_drop_rsl(trx);
+
+ /* set new RSL link for this TRX. */
+ line = bts->oml_link->ts->line;
+ ts = &line->ts[E1INP_SIGN_RSL + dev->trx_id - 1];
+ e1inp_ts_config_sign(ts, line);
+ sign_link = trx->rsl_link =
+ e1inp_sign_link_create(ts, E1INP_SIGN_RSL,
+ trx, trx->rsl_tei, 0);
+ trx->rsl_link->ts->sign.delay = 0;
+ break;
+ }
+ default:
+ break;
+ }
+ return sign_link;
+}
+
+static void ipaccess_sign_link_down(struct e1inp_line *line)
+{
+ /* No matter what link went down, we close both signal links. */
+ struct e1inp_ts *ts = &line->ts[E1INP_SIGN_OML-1];
+ struct e1inp_sign_link *link;
+
+ llist_for_each_entry(link, &ts->sign.sign_links, list) {
+ struct gsm_bts *bts = link->trx->bts;
+
+ ipaccess_drop_oml(bts);
+ /* Yes, we only use the first element of the list. */
+ break;
+ }
+}
+
+/* This function is called if we receive one OML/RSL message. */
+static int ipaccess_sign_link(struct msgb *msg)
+{
+ int ret = 0;
+ struct e1inp_sign_link *link = msg->dst;
+ struct e1inp_ts *e1i_ts = link->ts;
+
+ switch (link->type) {
+ case E1INP_SIGN_RSL:
+ if (!(link->trx->bts->ip_access.flags &
+ (RSL_UP << link->trx->nr))) {
+ e1inp_event(e1i_ts, S_L_INP_TEI_UP,
+ link->tei, link->sapi);
+ link->trx->bts->ip_access.flags |=
+ (RSL_UP << link->trx->nr);
+ }
+ ret = abis_rsl_rcvmsg(msg);
+ break;
+ case E1INP_SIGN_OML:
+ if (!(link->trx->bts->ip_access.flags & OML_UP)) {
+ e1inp_event(e1i_ts, S_L_INP_TEI_UP,
+ link->tei, link->sapi);
+ link->trx->bts->ip_access.flags |= OML_UP;
+ }
+ ret = abis_nm_rcvmsg(msg);
+ break;
+ default:
+ LOGP(DLINP, LOGL_ERROR, "Unknown signal link type %d\n",
+ link->type);
+ msgb_free(msg);
+ break;
+ }
+ return ret;
+}
+
+/* not static, ipaccess-config needs it. */
+struct e1inp_line_ops ipaccess_e1inp_line_ops = {
+ .cfg = {
+ .ipa = {
+ .addr = "0.0.0.0",
+ .role = E1INP_LINE_R_BSC,
+ },
+ },
+ .sign_link_up = ipaccess_sign_link_up,
+ .sign_link_down = ipaccess_sign_link_down,
+ .sign_link = ipaccess_sign_link,
+};
+
+static void bts_model_nanobts_e1line_bind_ops(struct e1inp_line *line)
+{
+ e1inp_line_bind_ops(line, &ipaccess_e1inp_line_ops);
+}