695 lines
21 KiB
C
695 lines
21 KiB
C
/* SMSCB Peer FSM: Represents state of one SMSCB for one peer (BSC) */
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/* This FSM exists per tuple of (message, [bsc/rnc/mme] peer) */
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/* (C) 2019 by Harald Welte <laforge@gnumonks.org>
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* All Rights Reserved
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*
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* SPDX-License-Identifier: AGPL-3.0+
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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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#include <osmocom/core/utils.h>
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/core/fsm.h>
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#include <osmocom/gsm/gsm23003.h>
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#include <osmocom/gsm/protocol/gsm_08_08.h>
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#include <osmocom/gsm/gsm0808_utils.h>
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#include <osmocom/gsm/cbsp.h>
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#include <osmocom/sbcap/sbcap_common.h>
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#include <osmocom/cbc/cbc_message.h>
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#include <osmocom/cbc/cbc_peer.h>
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#include <osmocom/cbc/cbsp_link.h>
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#include <osmocom/cbc/sbcap_link.h>
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#include <osmocom/cbc/sbcap_msg.h>
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#include <osmocom/cbc/debug.h>
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#include <osmocom/cbc/smscb_message_fsm.h>
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#define S(x) (1 << (x))
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const struct value_string smscb_fsm_event_names[] = {
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{ SMSCB_E_CHILD_DIED, "CHILD_DIED" },
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{ SMSCB_E_CREATE, "CREATE" },
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{ SMSCB_E_REPLACE, "REPLACE" },
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{ SMSCB_E_STATUS, "STATUS" },
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{ SMSCB_E_DELETE, "DELETE" },
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{ SMSCB_E_CBSP_WRITE_ACK, "CBSP_WRITE_ACK" },
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{ SMSCB_E_CBSP_WRITE_NACK, "CBSP_WRITE_NACK" },
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{ SMSCB_E_CBSP_REPLACE_ACK, "CBSP_REPLACE_ACK" },
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{ SMSCB_E_CBSP_REPLACE_NACK, "CBSP_REPLACE_NACK" },
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{ SMSCB_E_CBSP_DELETE_ACK, "CBSP_DELETE_ACK" },
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{ SMSCB_E_CBSP_DELETE_NACK, "CBSP_DELETE_NACK" },
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{ SMSCB_E_CBSP_STATUS_ACK, "CBSP_STATUS_ACK" },
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{ SMSCB_E_CBSP_STATUS_NACK, "CBSP_STATUS_NACK" },
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{ SMSCB_E_SBCAP_WRITE_ACK, "SBcAP_WRITE_ACK" },
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{ SMSCB_E_SBCAP_WRITE_NACK, "SBcAP_WRITE_NACK" },
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{ SMSCB_E_SBCAP_DELETE_ACK, "SBcAP_DELETE_ACK" },
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{ SMSCB_E_SBCAP_DELETE_NACK, "SBcAP_DELETE_NACK" },
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{ 0, NULL }
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};
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#if 0
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static const struct value_string smscb_p_fsm_timer_names[] = {
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OSMO_VALUE_STRING(T_WAIT_WRITE_ACK),
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OSMO_VALUE_STRING(T_WAIT_REPLACE_ACK),
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OSMO_VALUE_STRING(T_WAIT_DELETE_ACK),
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{ 0, NULL }
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};
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#endif
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/***********************************************************************
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* Helper functions
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***********************************************************************/
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/* covert TS 08.08 Cell Identity value to CBC internal type */
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static enum cbc_cell_id_type cci_discr_from_cell_id(enum CELL_IDENT id_discr)
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{
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switch (id_discr) {
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case CELL_IDENT_NO_CELL:
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return CBC_CELL_ID_NONE;
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case CELL_IDENT_WHOLE_GLOBAL:
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return CBC_CELL_ID_CGI;
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case CELL_IDENT_LAC_AND_CI:
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return CBC_CELL_ID_LAC_CI;
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case CELL_IDENT_CI:
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return CBC_CELL_ID_CI;
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case CELL_IDENT_LAI:
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return CBC_CELL_ID_LAI;
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case CELL_IDENT_LAC:
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return CBC_CELL_ID_LAC;
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case CELL_IDENT_BSS:
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return CBC_CELL_ID_BSS;
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default:
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return -1;
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}
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}
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/* covert CBC internal type to TS 08.08 Cell Identity */
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static enum CELL_IDENT cell_id_from_ccid_discr(enum cbc_cell_id_type in)
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{
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switch (in) {
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case CBC_CELL_ID_NONE:
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return CELL_IDENT_NO_CELL;
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case CBC_CELL_ID_CGI:
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return CELL_IDENT_WHOLE_GLOBAL;
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case CBC_CELL_ID_LAC_CI:
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return CELL_IDENT_LAC_AND_CI;
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case CBC_CELL_ID_CI:
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return CELL_IDENT_CI;
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case CBC_CELL_ID_LAI:
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return CELL_IDENT_LAI;
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case CBC_CELL_ID_LAC:
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return CELL_IDENT_LAC;
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case CBC_CELL_ID_BSS:
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return CELL_IDENT_BSS;
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default:
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return -1;
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}
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}
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/* convert TS 08.08 Cell Identifier Union to CBC internal type */
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static void cci_from_cbsp(struct cbc_cell_id *cci, enum CELL_IDENT id_discr,
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const union gsm0808_cell_id_u *u)
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{
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cci->id_discr = cci_discr_from_cell_id(id_discr);
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switch (id_discr) {
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case CELL_IDENT_NO_CELL:
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break;
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case CELL_IDENT_WHOLE_GLOBAL:
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cci->u.cgi = u->global;
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break;
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case CELL_IDENT_LAC_AND_CI:
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cci->u.lac_and_ci = u->lac_and_ci;
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break;
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case CELL_IDENT_CI:
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cci->u.ci = u->ci;
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break;
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case CELL_IDENT_LAI:
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cci->u.lai = u->lai_and_lac;
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break;
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case CELL_IDENT_LAC:
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cci->u.lac = u->lac;
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break;
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case CELL_IDENT_BSS:
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break;
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default:
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break;
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}
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}
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/* convert TS 08.08 Cell Identifier Union to CBC internal type */
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static void cbsp_from_cci(union gsm0808_cell_id_u *u, const struct cbc_cell_id *cci)
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{
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switch (cci->id_discr) {
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case CBC_CELL_ID_NONE:
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break;
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case CBC_CELL_ID_CGI:
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u->global = cci->u.cgi;
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printf("u->gobal: %s\n", osmo_hexdump((uint8_t *) &u->global, sizeof(u->global)));
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break;
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case CBC_CELL_ID_LAC_CI:
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u->lac_and_ci = cci->u.lac_and_ci;
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break;
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case CBC_CELL_ID_CI:
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u->ci = cci->u.ci;
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break;
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case CBC_CELL_ID_LAI:
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u->lai_and_lac = cci->u.lai;
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break;
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case CBC_CELL_ID_LAC:
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u->lac = cci->u.lac;
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break;
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case CBC_CELL_ID_BSS:
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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/* read a single osmo_cbsp_num_compl_ent and add it to cbc_message_peer */
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static void cci_from_cbsp_compl_ent(struct cbc_message_peer *mp,
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struct osmo_cbsp_num_compl_ent *ce, enum CELL_IDENT id_discr)
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{
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struct cbc_cell_id *cci;
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cci = NULL; // FIXME: lookup
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if (!cci) {
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cci = talloc_zero(mp, struct cbc_cell_id);
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if (!cci)
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return;
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llist_add_tail(&cci->list, &mp->num_compl_list);
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}
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cci_from_cbsp(cci, id_discr, &ce->cell_id);
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cci->num_compl.num_compl += ce->num_compl;
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cci->num_compl.num_bcast_info += ce->num_bcast_info;
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}
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static void msg_peer_append_cbsp_compl(struct cbc_message_peer *mp,
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struct osmo_cbsp_num_compl_list *nclist)
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{
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struct osmo_cbsp_num_compl_ent *ce;
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llist_for_each_entry(ce, &nclist->list, list)
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cci_from_cbsp_compl_ent(mp, ce, nclist->id_discr);
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}
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/* read a single osmo_cbsp_cell_ent and add it to cbc_message_peer */
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static void cci_from_cbsp_cell_ent(struct cbc_message_peer *mp,
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struct osmo_cbsp_cell_ent *ce, enum CELL_IDENT id_discr)
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{
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struct cbc_cell_id *cci;
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cci = NULL; // FIXME: lookup
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if (!cci) {
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cci = talloc_zero(mp, struct cbc_cell_id);
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if (!cci)
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return;
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llist_add_tail(&cci->list, &mp->cell_list);
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}
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cci_from_cbsp(cci, id_discr, &ce->cell_id);
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}
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static void msg_peer_append_cbsp_cell(struct cbc_message_peer *mp,
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struct osmo_cbsp_cell_list *clist)
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{
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struct osmo_cbsp_cell_ent *ce;
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llist_for_each_entry(ce, &clist->list, list)
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cci_from_cbsp_cell_ent(mp, ce, clist->id_discr);
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}
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/* read a single osmo_cbsp_fail_ent and add it to cbc_message_peer */
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static void cci_from_cbsp_fail_ent(struct cbc_message_peer *mp,
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struct osmo_cbsp_fail_ent *fe)
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{
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struct cbc_cell_id *cci;
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cci = NULL; // lookup */
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if (!cci) {
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cci = talloc_zero(mp, struct cbc_cell_id);
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if (!cci)
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return;
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llist_add_tail(&cci->list, &mp->fail_list);
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}
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cci->id_discr = cci_discr_from_cell_id(fe->id_discr);
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cci->fail.cause = fe->cause;
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}
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static void msg_peer_append_cbsp_fail(struct cbc_message_peer *mp, struct llist_head *flist)
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{
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struct osmo_cbsp_fail_ent *fe;
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llist_for_each_entry(fe, flist, list)
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cci_from_cbsp_fail_ent(mp, fe);
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}
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/* append all cells from cbc_message_peer to given CBSP cell_list */
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static void cbsp_append_cell_list(struct osmo_cbsp_cell_list *out, void *ctx,
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const struct cbc_message_peer *mp)
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{
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struct cbc_cell_id *cci;
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enum cbc_cell_id_type id_discr = CBC_CELL_ID_NONE;
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llist_for_each_entry(cci, &mp->cell_list, list) {
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struct osmo_cbsp_cell_ent *ent;
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if (id_discr == CBC_CELL_ID_NONE)
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id_discr = cci->id_discr;
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else if (id_discr != cci->id_discr) {
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LOGPFSML(mp->fi, LOGL_ERROR, "Cannot encode CBSP cell_list as not all "
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"entries are of same type (%u != %u)\n", id_discr, cci->id_discr);
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continue;
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}
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ent = talloc_zero(ctx, struct osmo_cbsp_cell_ent);
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OSMO_ASSERT(ent);
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cbsp_from_cci(&ent->cell_id, cci);
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llist_add_tail(&ent->list, &out->list);
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}
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out->id_discr = cell_id_from_ccid_discr(id_discr);
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}
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/***********************************************************************
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* actual FSM
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***********************************************************************/
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static void smscb_p_fsm_init(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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struct cbc_message_peer *mp = (struct cbc_message_peer *) fi->priv;
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int rc;
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switch (event) {
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case SMSCB_E_CREATE:
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/* send it to peer */
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rc = peer_new_cbc_message(mp->peer, mp->cbcmsg);
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if (rc == 0) {
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/* wait for peers' response */
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osmo_fsm_inst_state_chg(fi, SMSCB_S_WAIT_WRITE_ACK, 10,
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T_WAIT_WRITE_ACK);
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}
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void smscb_p_fsm_wait_write_ack(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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struct cbc_message_peer *mp = (struct cbc_message_peer *) fi->priv;
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struct osmo_cbsp_decoded *dec = NULL;
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//SBcAP_SBC_AP_PDU_t *pdu = NULL;
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switch (event) {
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case SMSCB_E_CBSP_WRITE_ACK:
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dec = data;
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msg_peer_append_cbsp_compl(mp, &dec->u.write_replace_compl.num_compl_list);
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msg_peer_append_cbsp_cell(mp, &dec->u.write_replace_compl.cell_list);
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osmo_fsm_inst_state_chg(fi, SMSCB_S_ACTIVE, 0, 0);
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/* Signal parent fsm about completion */
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osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_CBSP_WRITE_ACK, mp);
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break;
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case SMSCB_E_CBSP_WRITE_NACK:
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dec = data;
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msg_peer_append_cbsp_compl(mp, &dec->u.write_replace_fail.num_compl_list);
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msg_peer_append_cbsp_cell(mp, &dec->u.write_replace_fail.cell_list);
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msg_peer_append_cbsp_fail(mp, &dec->u.write_replace_fail.fail_list);
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osmo_fsm_inst_state_chg(fi, SMSCB_S_ACTIVE, 0, 0);
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/* Signal parent fsm about completion */
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osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_CBSP_WRITE_NACK, mp);
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break;
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case SMSCB_E_SBCAP_WRITE_ACK:
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//pdu = data;
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osmo_fsm_inst_state_chg(fi, SMSCB_S_ACTIVE, 0, 0);
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/* Signal parent fsm about completion */
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osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_SBCAP_WRITE_ACK, mp);
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break;
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case SMSCB_E_SBCAP_WRITE_NACK:
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//pdu = data;
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osmo_fsm_inst_state_chg(fi, SMSCB_S_ACTIVE, 0, 0);
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/* Signal parent fsm about completion */
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osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_SBCAP_WRITE_NACK, mp);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void smscb_p_fsm_active(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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struct cbc_message_peer *mp = (struct cbc_message_peer *) fi->priv;
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struct osmo_cbsp_decoded *cbsp;
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switch (event) {
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case SMSCB_E_REPLACE: /* send WRITE-REPLACE to BSC */
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cbsp = osmo_cbsp_decoded_alloc(mp->peer, CBSP_MSGT_WRITE_REPLACE);
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OSMO_ASSERT(cbsp);
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cbsp->u.write_replace.msg_id = mp->cbcmsg->msg.message_id;
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cbsp->u.write_replace.old_serial_nr = &mp->cbcmsg->msg.serial_nr;
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//cbsp->u.write_replace.new_serial_nr
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/* TODO: we assume that the replace will always affect all original cells */
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cbsp_append_cell_list(&cbsp->u.write_replace.cell_list, cbsp, mp);
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// TODO: ALL OTHER DATA
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cbc_cbsp_link_tx(mp->peer->link.cbsp, cbsp);
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osmo_fsm_inst_state_chg(fi, SMSCB_S_WAIT_REPLACE_ACK, 10, T_WAIT_REPLACE_ACK);
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break;
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case SMSCB_E_STATUS: /* send MSG-STATUS-QUERY to BSC */
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cbsp = osmo_cbsp_decoded_alloc(mp->peer, CBSP_MSGT_MSG_STATUS_QUERY);
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OSMO_ASSERT(cbsp);
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cbsp->u.msg_status_query.msg_id = mp->cbcmsg->msg.message_id;
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cbsp->u.msg_status_query.old_serial_nr = mp->cbcmsg->msg.serial_nr;
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cbsp_append_cell_list(&cbsp->u.msg_status_query.cell_list, cbsp, mp);
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cbsp->u.msg_status_query.channel_ind = CBSP_CHAN_IND_BASIC;
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cbc_cbsp_link_tx(mp->peer->link.cbsp, cbsp);
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osmo_fsm_inst_state_chg(fi, SMSCB_S_WAIT_STATUS_ACK, 10, T_WAIT_STATUS_ACK);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void smscb_p_fsm_wait_status_ack(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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struct cbc_message_peer *mp = (struct cbc_message_peer *) fi->priv;
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struct osmo_cbsp_decoded *dec = NULL;
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switch (event) {
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case SMSCB_E_CBSP_STATUS_ACK:
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dec = data;
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msg_peer_append_cbsp_compl(mp, &dec->u.msg_status_query_compl.num_compl_list);
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osmo_fsm_inst_state_chg(fi, SMSCB_S_ACTIVE, 0, 0);
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/* Signal parent fsm about completion */
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osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_CBSP_STATUS_ACK, mp);
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break;
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case SMSCB_E_CBSP_STATUS_NACK:
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dec = data;
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msg_peer_append_cbsp_compl(mp, &dec->u.msg_status_query_fail.num_compl_list);
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msg_peer_append_cbsp_fail(mp, &dec->u.msg_status_query_fail.fail_list);
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osmo_fsm_inst_state_chg(fi, SMSCB_S_ACTIVE, 0, 0);
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/* Signal parent fsm about completion */
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osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_CBSP_STATUS_NACK, mp);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void smscb_p_fsm_wait_replace_ack(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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struct cbc_message_peer *mp = (struct cbc_message_peer *) fi->priv;
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struct osmo_cbsp_decoded *dec = NULL;
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switch (event) {
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case SMSCB_E_CBSP_REPLACE_ACK:
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dec = data;
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msg_peer_append_cbsp_compl(mp, &dec->u.write_replace_compl.num_compl_list);
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msg_peer_append_cbsp_cell(mp, &dec->u.write_replace_compl.cell_list);
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osmo_fsm_inst_state_chg(fi, SMSCB_S_ACTIVE, 0, 0);
|
|
/* Signal parent fsm about completion */
|
|
osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_CBSP_REPLACE_ACK, mp);
|
|
break;
|
|
case SMSCB_E_CBSP_REPLACE_NACK:
|
|
dec = data;
|
|
msg_peer_append_cbsp_compl(mp, &dec->u.write_replace_fail.num_compl_list);
|
|
msg_peer_append_cbsp_cell(mp, &dec->u.write_replace_fail.cell_list);
|
|
msg_peer_append_cbsp_fail(mp, &dec->u.write_replace_fail.fail_list);
|
|
osmo_fsm_inst_state_chg(fi, SMSCB_S_ACTIVE, 0, 0);
|
|
/* Signal parent fsm about completion */
|
|
osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_CBSP_REPLACE_NACK, mp);
|
|
break;
|
|
default:
|
|
OSMO_ASSERT(0);
|
|
}
|
|
}
|
|
|
|
static void smscb_p_fsm_wait_delete_ack(struct osmo_fsm_inst *fi, uint32_t event, void *data)
|
|
{
|
|
struct cbc_message_peer *mp = (struct cbc_message_peer *) fi->priv;
|
|
struct osmo_cbsp_decoded *dec = NULL;
|
|
//SBcAP_SBC_AP_PDU_t *pdu = NULL;
|
|
|
|
switch (event) {
|
|
case SMSCB_E_CBSP_DELETE_ACK:
|
|
dec = data;
|
|
/* append results */
|
|
msg_peer_append_cbsp_compl(mp, &dec->u.kill_compl.num_compl_list);
|
|
msg_peer_append_cbsp_cell(mp, &dec->u.kill_compl.cell_list);
|
|
osmo_fsm_inst_state_chg(fi, SMSCB_S_DELETED, 0, 0);
|
|
/* Signal parent fsm about completion */
|
|
osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_CBSP_DELETE_ACK, mp);
|
|
break;
|
|
case SMSCB_E_CBSP_DELETE_NACK:
|
|
dec = data;
|
|
/* append results */
|
|
msg_peer_append_cbsp_compl(mp, &dec->u.kill_fail.num_compl_list);
|
|
msg_peer_append_cbsp_cell(mp, &dec->u.kill_fail.cell_list);
|
|
msg_peer_append_cbsp_fail(mp, &dec->u.kill_fail.fail_list);
|
|
osmo_fsm_inst_state_chg(fi, SMSCB_S_DELETED, 0, 0);
|
|
/* Signal parent fsm about completion */
|
|
osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_CBSP_DELETE_NACK, mp);
|
|
break;
|
|
case SMSCB_E_SBCAP_DELETE_ACK:
|
|
//pdu = data;
|
|
osmo_fsm_inst_state_chg(fi, SMSCB_S_DELETED, 0, 0);
|
|
/* Signal parent fsm about completion */
|
|
osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_SBCAP_DELETE_ACK, mp);
|
|
break;
|
|
case SMSCB_E_SBCAP_DELETE_NACK:
|
|
//pdu = data;
|
|
osmo_fsm_inst_state_chg(fi, SMSCB_S_DELETED, 0, 0);
|
|
/* Signal parent fsm about completion */
|
|
osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_SBCAP_DELETE_NACK, mp);
|
|
break;
|
|
default:
|
|
OSMO_ASSERT(0);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
static int smscb_p_fsm_timer_cb(struct osmo_fsm_inst *fi)
|
|
{
|
|
struct cbc_message_peer *mp = (struct cbc_message_peer *)fi->priv;
|
|
int ev;
|
|
switch (fi->T) {
|
|
case T_WAIT_WRITE_ACK:
|
|
osmo_fsm_inst_state_chg(fi, SMSCB_S_ACTIVE, 0, 0);
|
|
switch (mp->peer->proto) {
|
|
case CBC_PEER_PROTO_CBSP:
|
|
ev = SMSCB_E_CBSP_WRITE_NACK;
|
|
break;
|
|
case CBC_PEER_PROTO_SBcAP:
|
|
ev = SMSCB_E_SBCAP_WRITE_NACK;
|
|
break;
|
|
default:
|
|
OSMO_ASSERT(0);
|
|
}
|
|
osmo_fsm_inst_dispatch(fi->proc.parent, ev, NULL);
|
|
break;
|
|
case T_WAIT_REPLACE_ACK:
|
|
osmo_fsm_inst_state_chg(fi, SMSCB_S_ACTIVE, 0, 0);
|
|
osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_CBSP_REPLACE_NACK, NULL);
|
|
break;
|
|
case T_WAIT_STATUS_ACK:
|
|
osmo_fsm_inst_state_chg(fi, SMSCB_S_ACTIVE, 0, 0);
|
|
osmo_fsm_inst_dispatch(fi->proc.parent, SMSCB_E_CBSP_STATUS_NACK, NULL);
|
|
break;
|
|
case T_WAIT_DELETE_ACK:
|
|
osmo_fsm_inst_state_chg(fi, SMSCB_S_DELETED, 0, 0);
|
|
switch (mp->peer->proto) {
|
|
case CBC_PEER_PROTO_CBSP:
|
|
ev = SMSCB_E_CBSP_DELETE_NACK;
|
|
break;
|
|
case CBC_PEER_PROTO_SBcAP:
|
|
ev = SMSCB_E_SBCAP_DELETE_NACK;
|
|
break;
|
|
default:
|
|
OSMO_ASSERT(0);
|
|
}
|
|
osmo_fsm_inst_dispatch(fi->proc.parent, ev, NULL);
|
|
break;
|
|
default:
|
|
OSMO_ASSERT(0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void smscb_p_fsm_allstate(struct osmo_fsm_inst *fi, uint32_t event, void *data)
|
|
{
|
|
struct cbc_message_peer *mp = (struct cbc_message_peer *) fi->priv;
|
|
struct osmo_cbsp_decoded *cbsp;
|
|
SBcAP_SBC_AP_PDU_t *sbcap;
|
|
|
|
switch (event) {
|
|
case SMSCB_E_DELETE: /* send KILL to BSC */
|
|
switch (fi->state) {
|
|
case SMSCB_S_DELETED:
|
|
case SMSCB_S_INIT:
|
|
LOGPFSML(fi, LOGL_ERROR, "Event %s not permitted\n",
|
|
osmo_fsm_event_name(fi->fsm, event));
|
|
return;
|
|
default:
|
|
break;
|
|
}
|
|
switch (mp->peer->proto) {
|
|
case CBC_PEER_PROTO_CBSP:
|
|
cbsp = osmo_cbsp_decoded_alloc(mp->peer, CBSP_MSGT_KILL);
|
|
OSMO_ASSERT(cbsp);
|
|
cbsp->u.kill.msg_id = mp->cbcmsg->msg.message_id;
|
|
cbsp->u.kill.old_serial_nr = mp->cbcmsg->msg.serial_nr;
|
|
/* TODO: we assume that the delete will always affect all original cells */
|
|
cbsp_append_cell_list(&cbsp->u.kill.cell_list, cbsp, mp);
|
|
if (!mp->cbcmsg->msg.is_etws) {
|
|
/* Channel Indication IE is only present in CBS, not in ETWS! */
|
|
cbsp->u.kill.channel_ind = talloc_zero(cbsp, enum cbsp_channel_ind);
|
|
OSMO_ASSERT(cbsp->u.kill.channel_ind);
|
|
*(cbsp->u.kill.channel_ind) = CBSP_CHAN_IND_BASIC;
|
|
}
|
|
cbc_cbsp_link_tx(mp->peer->link.cbsp, cbsp);
|
|
break;
|
|
case CBC_PEER_PROTO_SBcAP:
|
|
if ((sbcap = sbcap_gen_stop_warning_req(mp->peer, mp->cbcmsg))) {
|
|
cbc_sbcap_link_tx(mp->peer->link.sbcap, sbcap);
|
|
} else {
|
|
LOGP(DSBcAP, LOGL_ERROR,
|
|
"[%s] Tx SBc-AP Stop-Warning-Request: msg gen failed\n",
|
|
mp->peer->name);
|
|
}
|
|
break;
|
|
case CBC_PEER_PROTO_SABP:
|
|
default:
|
|
osmo_panic("SMSCB_E_DELETE not implemented for proto %u", mp->peer->proto);
|
|
}
|
|
osmo_fsm_inst_state_chg(fi, SMSCB_S_WAIT_DELETE_ACK, 10, T_WAIT_DELETE_ACK);
|
|
break;
|
|
default:
|
|
OSMO_ASSERT(0);
|
|
}
|
|
}
|
|
|
|
static void smscb_p_fsm_cleanup(struct osmo_fsm_inst *fi, enum osmo_fsm_term_cause cause)
|
|
{
|
|
struct cbc_message_peer *mp = (struct cbc_message_peer *) fi->priv;
|
|
llist_del(&mp->list);
|
|
/* memory of mp is child of fi and hence automatically free'd */
|
|
}
|
|
|
|
static const struct osmo_fsm_state smscb_p_fsm_states[] = {
|
|
[SMSCB_S_INIT] = {
|
|
.name = "INIT",
|
|
.in_event_mask = S(SMSCB_E_CREATE),
|
|
.out_state_mask = S(SMSCB_S_WAIT_WRITE_ACK),
|
|
.action = smscb_p_fsm_init,
|
|
},
|
|
[SMSCB_S_WAIT_WRITE_ACK] = {
|
|
.name = "WAIT_WRITE_ACK",
|
|
.in_event_mask = S(SMSCB_E_CBSP_WRITE_ACK) |
|
|
S(SMSCB_E_CBSP_WRITE_NACK) |
|
|
S(SMSCB_E_SBCAP_WRITE_ACK) |
|
|
S(SMSCB_E_SBCAP_WRITE_NACK),
|
|
.out_state_mask = S(SMSCB_S_ACTIVE) |
|
|
S(SMSCB_S_WAIT_DELETE_ACK),
|
|
.action = smscb_p_fsm_wait_write_ack,
|
|
},
|
|
[SMSCB_S_ACTIVE] = {
|
|
.name = "ACTIVE",
|
|
.in_event_mask = S(SMSCB_E_REPLACE) |
|
|
S(SMSCB_E_STATUS),
|
|
.out_state_mask = S(SMSCB_S_WAIT_REPLACE_ACK) |
|
|
S(SMSCB_S_WAIT_STATUS_ACK) |
|
|
S(SMSCB_S_WAIT_DELETE_ACK),
|
|
.action = smscb_p_fsm_active,
|
|
},
|
|
[SMSCB_S_WAIT_STATUS_ACK] = {
|
|
.name = "WAIT_STATUS_ACK",
|
|
.in_event_mask = S(SMSCB_E_CBSP_STATUS_ACK) |
|
|
S(SMSCB_E_CBSP_STATUS_NACK),
|
|
.out_state_mask = S(SMSCB_S_ACTIVE) |
|
|
S(SMSCB_S_WAIT_DELETE_ACK),
|
|
.action = smscb_p_fsm_wait_status_ack,
|
|
},
|
|
[SMSCB_S_WAIT_REPLACE_ACK] = {
|
|
.name = "WAIT_REPLACE_ACK",
|
|
.in_event_mask = S(SMSCB_E_CBSP_REPLACE_ACK) |
|
|
S(SMSCB_E_CBSP_REPLACE_NACK),
|
|
.out_state_mask = S(SMSCB_S_ACTIVE) |
|
|
S(SMSCB_S_WAIT_DELETE_ACK),
|
|
.action = smscb_p_fsm_wait_replace_ack,
|
|
},
|
|
[SMSCB_S_WAIT_DELETE_ACK] = {
|
|
.name = "WAIT_DELETE_ACK",
|
|
.in_event_mask = S(SMSCB_E_CBSP_DELETE_ACK) |
|
|
S(SMSCB_E_CBSP_DELETE_NACK) |
|
|
S(SMSCB_E_SBCAP_DELETE_ACK) |
|
|
S(SMSCB_E_SBCAP_DELETE_NACK),
|
|
.out_state_mask = S(SMSCB_S_DELETED),
|
|
.action = smscb_p_fsm_wait_delete_ack,
|
|
},
|
|
[SMSCB_S_DELETED] = {
|
|
.name = "DELETED",
|
|
},
|
|
};
|
|
|
|
struct osmo_fsm smscb_p_fsm = {
|
|
.name = "SMSCB-PEER",
|
|
.states = smscb_p_fsm_states,
|
|
.num_states = ARRAY_SIZE(smscb_p_fsm_states),
|
|
.allstate_event_mask = S(SMSCB_E_DELETE),
|
|
.allstate_action = smscb_p_fsm_allstate,
|
|
.timer_cb = smscb_p_fsm_timer_cb,
|
|
.log_subsys = DCBSP,
|
|
.event_names = smscb_fsm_event_names,
|
|
.cleanup = smscb_p_fsm_cleanup,
|
|
};
|
|
|
|
static __attribute__((constructor)) void on_dso_load_smscb_p_fsm(void)
|
|
{
|
|
OSMO_ASSERT(osmo_fsm_register(&smscb_p_fsm) == 0);
|
|
}
|
|
|
|
struct cbc_message_peer *smscb_peer_fsm_alloc(struct cbc_peer *peer, struct cbc_message *cbcmsg)
|
|
{
|
|
struct cbc_message_peer *mp;
|
|
struct osmo_fsm_inst *fi;
|
|
|
|
fi = osmo_fsm_inst_alloc_child(&smscb_p_fsm, cbcmsg->fi, SMSCB_E_CHILD_DIED);
|
|
if (!fi)
|
|
return NULL;
|
|
/* include the peer name in the ID of the child FSM */
|
|
osmo_fsm_inst_update_id_f_sanitize(fi, '_', "%s-%s", cbcmsg->fi->id, peer->name);
|
|
|
|
/* allocate and initialize message_peer */
|
|
mp = talloc_zero(fi, struct cbc_message_peer);
|
|
if (!mp) {
|
|
osmo_fsm_inst_term(fi, OSMO_FSM_TERM_ERROR, NULL);
|
|
return NULL;
|
|
}
|
|
mp->peer = peer;
|
|
mp->cbcmsg = cbcmsg;
|
|
INIT_LLIST_HEAD(&mp->cell_list);
|
|
INIT_LLIST_HEAD(&mp->fail_list);
|
|
INIT_LLIST_HEAD(&mp->num_compl_list);
|
|
|
|
/* link message_peer with its FSM instance */
|
|
fi->priv = mp;
|
|
mp->fi = fi;
|
|
|
|
/* link message_peer to message */
|
|
llist_add_tail(&mp->list, &cbcmsg->peers);
|
|
|
|
return mp;
|
|
}
|