diff options
Diffstat (limited to 'openbsc/src/libmsc/transaction.c')
| -rw-r--r-- | openbsc/src/libmsc/transaction.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/openbsc/src/libmsc/transaction.c b/openbsc/src/libmsc/transaction.c deleted file mode 100644 index dba4bed17..000000000 --- a/openbsc/src/libmsc/transaction.c +++ /dev/null @@ -1,163 +0,0 @@ -/* GSM 04.07 Transaction handling */ - -/* (C) 2009 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 <openbsc/transaction.h> -#include <openbsc/gsm_data.h> -#include <openbsc/mncc.h> -#include <openbsc/debug.h> -#include <osmocom/core/talloc.h> -#include <openbsc/gsm_subscriber.h> -#include <openbsc/gsm_04_08.h> -#include <openbsc/mncc.h> -#include <openbsc/paging.h> -#include <openbsc/osmo_msc.h> - -void *tall_trans_ctx; - -void _gsm48_cc_trans_free(struct gsm_trans *trans); - -struct gsm_trans *trans_find_by_id(struct gsm_subscriber_connection *conn, - uint8_t proto, uint8_t trans_id) -{ - struct gsm_trans *trans; - struct gsm_network *net = conn->network; - struct gsm_subscriber *subscr = conn->subscr; - - llist_for_each_entry(trans, &net->trans_list, entry) { - if (trans->subscr == subscr && - trans->protocol == proto && - trans->transaction_id == trans_id) - return trans; - } - return NULL; -} - -struct gsm_trans *trans_find_by_callref(struct gsm_network *net, - uint32_t callref) -{ - struct gsm_trans *trans; - - llist_for_each_entry(trans, &net->trans_list, entry) { - if (trans->callref == callref) - return trans; - } - return NULL; -} - -struct gsm_trans *trans_alloc(struct gsm_network *net, - struct gsm_subscriber *subscr, - uint8_t protocol, uint8_t trans_id, - uint32_t callref) -{ - struct gsm_trans *trans; - - DEBUGP(DCC, "subscr=%p, net=%p\n", subscr, net); - - trans = talloc_zero(tall_trans_ctx, struct gsm_trans); - if (!trans) - return NULL; - - trans->subscr = subscr; - subscr_get(trans->subscr); - - trans->protocol = protocol; - trans->transaction_id = trans_id; - trans->callref = callref; - - trans->net = net; - llist_add_tail(&trans->entry, &net->trans_list); - - return trans; -} - -void trans_free(struct gsm_trans *trans) -{ - switch (trans->protocol) { - case GSM48_PDISC_CC: - _gsm48_cc_trans_free(trans); - break; - case GSM48_PDISC_SMS: - _gsm411_sms_trans_free(trans); - break; - } - - if (trans->paging_request) { - subscr_remove_request(trans->paging_request); - trans->paging_request = NULL; - } - - if (trans->subscr) { - subscr_put(trans->subscr); - trans->subscr = NULL; - } - - llist_del(&trans->entry); - - if (trans->conn) - msc_release_connection(trans->conn); - - trans->conn = NULL; - talloc_free(trans); -} - -/* allocate an unused transaction ID for the given subscriber - * in the given protocol using the ti_flag specified */ -int trans_assign_trans_id(struct gsm_network *net, struct gsm_subscriber *subscr, - uint8_t protocol, uint8_t ti_flag) -{ - struct gsm_trans *trans; - unsigned int used_tid_bitmask = 0; - int i, j, h; - - if (ti_flag) - ti_flag = 0x8; - - /* generate bitmask of already-used TIDs for this (subscr,proto) */ - llist_for_each_entry(trans, &net->trans_list, entry) { - if (trans->subscr != subscr || - trans->protocol != protocol || - trans->transaction_id == 0xff) - continue; - used_tid_bitmask |= (1 << trans->transaction_id); - } - - /* find a new one, trying to go in a 'circular' pattern */ - for (h = 6; h > 0; h--) - if (used_tid_bitmask & (1 << (h | ti_flag))) - break; - for (i = 0; i < 7; i++) { - j = ((h + i) % 7) | ti_flag; - if ((used_tid_bitmask & (1 << j)) == 0) - return j; - } - - return -1; -} - -int trans_has_conn(const struct gsm_subscriber_connection *conn) -{ - struct gsm_trans *trans; - - llist_for_each_entry(trans, &conn->network->trans_list, entry) - if (trans->conn == conn) - return 1; - - return 0; -} |