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authorHarald Welte <laforge@gnumonks.org>2009-07-23 21:25:08 +0200
committerHarald Welte <laforge@gnumonks.org>2009-07-23 21:25:48 +0200
commitc072ad6e299a5930937d336bb13c407c02aefd7b (patch)
tree9177a820d782d5f4c41f35dded8093735436f4f1 /openbsc/src
parent6f5aee07e50d5dd80529b2780556eb570a340cd2 (diff)
add missing files to git
Diffstat (limited to 'openbsc/src')
-rw-r--r--openbsc/src/transaction.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/openbsc/src/transaction.c b/openbsc/src/transaction.c
new file mode 100644
index 000000000..e917cdd11
--- /dev/null
+++ b/openbsc/src/transaction.c
@@ -0,0 +1,134 @@
+/* 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 General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <openbsc/transaction.h>
+#include <openbsc/gsm_data.h>
+#include <openbsc/mncc.h>
+#include <openbsc/debug.h>
+#include <openbsc/talloc.h>
+#include <openbsc/gsm_subscriber.h>
+#include <openbsc/gsm_04_08.h>
+#include <openbsc/mncc.h>
+#include <openbsc/paging.h>
+
+static void *tall_trans_ctx;
+
+struct gsm_trans *trans_find_by_id(struct gsm_lchan *lchan, u_int8_t trans_id)
+{
+ struct gsm_trans *trans;
+ struct gsm_network *net = lchan->ts->trx->bts->network;
+
+ llist_for_each_entry(trans, &net->trans_list, entry) {
+ if (trans->lchan == lchan && trans->transaction_id == trans_id)
+ return trans;
+ }
+ return NULL;
+}
+
+struct gsm_trans *trans_find_by_callref(struct gsm_network *net,
+ u_int32_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_subscriber *subscr,
+ u_int8_t protocol, u_int8_t trans_id,
+ u_int32_t callref)
+{
+ struct gsm_trans *trans;
+
+ DEBUGP(DCC, "subscr=%p, subscr->net=%p\n", subscr, 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;
+
+ llist_add_tail(&trans->entry, &subscr->net->trans_list);
+
+ return trans;
+}
+
+void trans_free(struct gsm_trans *trans)
+{
+ struct gsm_bts *bts;
+
+ switch (trans->protocol) {
+ case GSM48_PDISC_CC:
+ _gsm48_cc_trans_free(trans);
+ break;
+ }
+
+ if (trans->lchan)
+ put_lchan(trans->lchan);
+
+ if (!trans->lchan && trans->subscr && trans->subscr->net) {
+ /* Stop paging on all bts' */
+ bts = NULL;
+ do {
+ bts = gsm_bts_by_lac(trans->subscr->net,
+ trans->subscr->lac, bts);
+ if (!bts)
+ break;
+ /* Stop paging */
+ paging_request_stop(bts, trans->subscr, NULL);
+ } while (1);
+ }
+
+ if (trans->subscr)
+ subscr_put(trans->subscr);
+
+ llist_del(&trans->entry);
+
+ talloc_free(trans);
+}
+
+#if 0
+int trans_assign_trans_id(struct gsm_subscriber *subscr,
+ u_int8_t protocol, u_int8_t ti_flag)
+{
+ struct gsm_network *net = subscr->net;
+ struct gsm_trans *trans;
+ unsigned int used_tid_bitmask = 0;
+
+ /* 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);
+ }
+
+}
+#endif