58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/* GPRS LLC XID field encoding/decoding as per 3GPP TS 44.064 */
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/* (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
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* All Rights Reserved
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*
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* Author: Philipp Maier
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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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#pragma once
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#include <stdint.h>
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#include <osmocom/core/linuxlist.h>
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/* 3GPP TS 44.064 6.4.1.6 Exchange Identification (XID)
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command/response parameter field */
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struct gprs_llc_xid_field {
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struct llist_head list;
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uint8_t type; /* See also Table 6: LLC layer parameter
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negotiation */
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uint8_t *data; /* Payload data (memory is owned by the
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* creator of the struct) */
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unsigned int data_len; /* Payload length */
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};
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/* Transform a list with XID fields into a XID message (dst) */
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int gprs_llc_compile_xid(uint8_t *dst, int dst_maxlen,
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const struct llist_head *xid_fields);
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/* Transform a XID message (dst) into a list of XID fields */
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struct llist_head *gprs_llc_parse_xid(const void *ctx, const uint8_t *src,
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int src_len);
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/* Create a duplicate of an XID-Field */
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struct gprs_llc_xid_field *gprs_llc_dup_xid_field(const void *ctx,
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const struct gprs_llc_xid_field *xid_field);
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/* Copy an llist with xid fields */
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struct llist_head *gprs_llc_copy_xid(const void *ctx,
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const struct llist_head *xid_fields);
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/* Dump a list with XID fields (Debug) */
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void gprs_llc_dump_xid_fields(const struct llist_head *xid_fields,
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unsigned int logl);
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