diff options
Diffstat (limited to 'src/libbsc/bts_ipaccess_nanobts.c')
-rw-r--r-- | src/libbsc/bts_ipaccess_nanobts.c | 520 |
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); +} |