| /* 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); |
| |