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authorNeels Hofmeyr <neels@hofmeyr.de>2017-09-04 15:13:25 +0200
committerNeels Hofmeyr <neels@hofmeyr.de>2017-09-06 16:47:47 +0200
commit396f2e69a047f461e2fcabae4c1f9990730289a3 (patch)
tree88a5843f3dcfb30a010e14289a829adf0e30af8f /include/osmocom/sgsn/gprs_llc_xid.h
parent2c17747c1b470118195518452860c3a3cae946dd (diff)
move include/openbsc to include/osmocom/sgsn
Diffstat (limited to 'include/osmocom/sgsn/gprs_llc_xid.h')
-rw-r--r--include/osmocom/sgsn/gprs_llc_xid.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/include/osmocom/sgsn/gprs_llc_xid.h b/include/osmocom/sgsn/gprs_llc_xid.h
new file mode 100644
index 00000000..d340d40b
--- /dev/null
+++ b/include/osmocom/sgsn/gprs_llc_xid.h
@@ -0,0 +1,57 @@
+/* GPRS LLC XID field encoding/decoding as per 3GPP TS 44.064 */
+
+/* (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * Author: Philipp Maier
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <osmocom/core/linuxlist.h>
+
+/* 3GPP TS 44.064 6.4.1.6 Exchange Identification (XID)
+ command/response parameter field */
+struct gprs_llc_xid_field {
+ struct llist_head list;
+ uint8_t type; /* See also Table 6: LLC layer parameter
+ negotiation */
+ uint8_t *data; /* Payload data (memory is owned by the
+ * creator of the struct) */
+ unsigned int data_len; /* Payload length */
+};
+
+/* Transform a list with XID fields into a XID message (dst) */
+int gprs_llc_compile_xid(uint8_t *dst, int dst_maxlen,
+ const struct llist_head *xid_fields);
+
+/* Transform a XID message (dst) into a list of XID fields */
+struct llist_head *gprs_llc_parse_xid(const void *ctx, const uint8_t *src,
+ int src_len);
+
+/* Create a duplicate of an XID-Field */
+struct gprs_llc_xid_field *gprs_llc_dup_xid_field(const void *ctx,
+ const struct gprs_llc_xid_field *xid_field);
+
+/* Copy an llist with xid fields */
+struct llist_head *gprs_llc_copy_xid(const void *ctx,
+ const struct llist_head *xid_fields);
+
+/* Dump a list with XID fields (Debug) */
+void gprs_llc_dump_xid_fields(const struct llist_head *xid_fields,
+ unsigned int logl);
+