423 lines
16 KiB
C
423 lines
16 KiB
C
/*
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* Copyright (c) 2017, NextEPC Group
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define TRACE_MODULE _gtptypes
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#include "core_debug.h"
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#include "core_lib.h"
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#include "core_network.h"
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#include "gtp_types.h"
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#include "gtp_message.h"
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/* 8.13 Protocol Configuration Options (PCO)
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* 10.5.6.3 Protocol configuration options in 3GPP TS 24.008 */
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/* 8.15 Bearer Quality of Service (Bearer QoS) */
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c_int16_t gtp_parse_bearer_qos(
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gtp_bearer_qos_t *bearer_qos, tlv_octet_t *octet)
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{
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gtp_bearer_qos_t *source = (gtp_bearer_qos_t *)octet->data;
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c_int16_t size = 0;
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d_assert(bearer_qos, return -1, "Null param");
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d_assert(octet, return -1, "Null param");
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d_assert(octet->len == GTP_BEARER_QOS_LEN, return -1, "Null param");
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memset(bearer_qos, 0, sizeof(gtp_bearer_qos_t));
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bearer_qos->pre_emption_capability = source->pre_emption_capability;
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bearer_qos->priority_level = source->priority_level;
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bearer_qos->pre_emption_vulnerability = source->pre_emption_vulnerability;
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size++;
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bearer_qos->qci = source->qci;
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size++;
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bearer_qos->ul_mbr = core_buffer_to_uint64(octet->data + size, 5);
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size += 5;
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bearer_qos->dl_mbr = core_buffer_to_uint64(octet->data + size, 5);
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size += 5;
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bearer_qos->ul_gbr = core_buffer_to_uint64(octet->data + size, 5);
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size += 5;
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bearer_qos->dl_gbr = core_buffer_to_uint64(octet->data + size, 5);
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size += 5;
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d_assert(size == octet->len, return -1, "decode error");
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return size;
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}
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c_int16_t gtp_build_bearer_qos(
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tlv_octet_t *octet, gtp_bearer_qos_t *bearer_qos, void *data, int data_len)
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{
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gtp_bearer_qos_t target;
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c_int16_t size = 0;
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d_assert(bearer_qos, return -1, "Null param");
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d_assert(octet, return -1, "Null param");
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d_assert(data, return -1, "Null param");
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d_assert(data_len >= GTP_BEARER_QOS_LEN, return -1, "Null param");
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octet->data = data;
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memcpy(&target, bearer_qos, sizeof(gtp_bearer_qos_t));
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memcpy(octet->data + size, &target, 2);
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size += 2;
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core_uint64_to_buffer(target.ul_mbr, 5, octet->data + size);
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size += 5;
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core_uint64_to_buffer(target.dl_mbr, 5, octet->data + size);
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size += 5;
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core_uint64_to_buffer(target.ul_gbr, 5, octet->data + size);
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size += 5;
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core_uint64_to_buffer(target.dl_gbr, 5, octet->data + size);
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size += 5;
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octet->len = size;
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return octet->len;
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}
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/* 8.19 EPS Bearer Level Traffic Flow Template (Bearer TFT)
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* See subclause 10.5.6.12 in 3GPP TS 24.008 [13]. */
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c_int16_t gtp_build_tft(
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tlv_octet_t *octet, gtp_tft_t *tft, void *data, int data_len)
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{
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gtp_tft_t target;
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c_uint16_t size = 0;
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int i, j;
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d_assert(tft, return -1, "Null param");
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d_assert(octet, return -1, "Null param");
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d_assert(data, return -1, "Null param");
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d_assert(data_len >= GTP_MAX_TRAFFIC_FLOW_TEMPLATE,
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return -1, "Null param");
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octet->data = data;
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memcpy(&target, tft, sizeof(gtp_tft_t));
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d_assert(size + sizeof(target.flags) <= data_len,
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return -1, "encode error");
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memcpy(octet->data + size, &target.flags, sizeof(target.flags));
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size += sizeof(target.flags);
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for (i = 0; i < target.num_of_packet_filter; i++)
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{
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d_assert(size + sizeof(target.pf[i].flags) <= data_len,
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return -1, "encode error");
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memcpy(octet->data + size, &target.pf[i].flags,
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sizeof(target.pf[i].flags));
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size += sizeof(target.pf[i].flags);
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d_assert(size + sizeof(target.pf[i].precedence) <= data_len,
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return -1, "encode error");
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memcpy(octet->data + size, &target.pf[i].precedence,
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sizeof(target.pf[i].precedence));
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size += sizeof(target.pf[i].precedence);
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d_assert(size + sizeof(target.pf[i].length) <= data_len,
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return -1, "encode error");
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memcpy(octet->data + size, &target.pf[i].length,
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sizeof(target.pf[i].length));
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size += sizeof(target.pf[i].length);
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for (j = 0; j < target.pf[i].num_of_component; j++)
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{
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d_assert(size +
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sizeof(target.pf[i].component[j].type) <= data_len,
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return -1, "encode error");
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memcpy(octet->data + size, &target.pf[i].component[j].type,
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sizeof(target.pf[i].component[j].type));
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size += sizeof(target.pf[i].component[j].type);
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switch(target.pf[i].component[j].type)
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{
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case GTP_PACKET_FILTER_PROTOCOL_IDENTIFIER_NEXT_HEADER_TYPE:
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{
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d_assert(size +
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sizeof(target.pf[i].component[j].proto) <= data_len,
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return -1, "encode error");
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memcpy(octet->data + size, &target.pf[i].component[j].proto,
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sizeof(target.pf[i].component[j].proto));
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size += sizeof(target.pf[i].component[j].proto);
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break;
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}
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case GTP_PACKET_FILTER_IPV4_REMOTE_ADDRESS_TYPE:
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case GTP_PACKET_FILTER_IPV4_LOCAL_ADDRESS_TYPE:
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d_assert(size +
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sizeof(target.pf[i].component[j].ipv4.addr)
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<= data_len,
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return -1, "encode error");
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memcpy(octet->data + size,
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&target.pf[i].component[j].ipv4.addr,
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sizeof(target.pf[i].component[j].ipv4.addr));
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size += sizeof(target.pf[i].component[j].ipv4.addr);
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d_assert(size +
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sizeof(target.pf[i].component[j].ipv4.mask)
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<= data_len,
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return -1, "encode error");
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memcpy(octet->data + size,
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&target.pf[i].component[j].ipv4.mask,
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sizeof(target.pf[i].component[j].ipv4.mask));
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size += sizeof(target.pf[i].component[j].ipv4.mask);
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break;
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case GTP_PACKET_FILTER_IPV6_LOCAL_ADDRESS_PREFIX_LENGTH_TYPE:
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case GTP_PACKET_FILTER_IPV6_REMOTE_ADDRESS_PREFIX_LENGTH_TYPE:
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d_assert(size +
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sizeof(target.pf[i].component[j].ipv6.addr)
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<= data_len,
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return -1, "encode error");
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memcpy(octet->data + size,
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&target.pf[i].component[j].ipv6.addr,
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sizeof(target.pf[i].component[j].ipv6.addr));
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size += sizeof(target.pf[i].component[j].ipv6.addr);
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d_assert(size +
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sizeof(target.pf[i].component[j].ipv6.prefixlen)
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<= data_len,
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return -1, "encode error");
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memcpy(octet->data + size,
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&target.pf[i].component[j].ipv6.prefixlen,
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sizeof(target.pf[i].component[j].ipv6.prefixlen));
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size += sizeof(target.pf[i].component[j].ipv6.prefixlen);
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break;
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case GTP_PACKET_FILTER_IPV6_REMOTE_ADDRESS_TYPE:
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d_assert(size +
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sizeof(target.pf[i].component[j].ipv6_mask.addr)
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<= data_len,
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return -1, "encode error");
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memcpy(octet->data + size,
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&target.pf[i].component[j].ipv6_mask.addr,
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sizeof(target.pf[i].component[j].ipv6_mask.addr));
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size += sizeof(target.pf[i].component[j].ipv6_mask.addr);
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d_assert(size +
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sizeof(target.pf[i].component[j].ipv6_mask.mask)
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<= data_len,
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return -1, "encode error");
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memcpy(octet->data + size,
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&target.pf[i].component[j].ipv6_mask.mask,
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sizeof(target.pf[i].component[j].ipv6_mask.mask));
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size += sizeof(target.pf[i].component[j].ipv6_mask.mask);
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break;
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case GTP_PACKET_FILTER_SINGLE_LOCAL_PORT_TYPE:
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case GTP_PACKET_FILTER_SINGLE_REMOTE_PORT_TYPE:
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d_assert(size +
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sizeof(target.pf[i].component[j].port.low)
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<= data_len,
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return -1, "encode error");
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target.pf[i].component[j].port.low =
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htons(target.pf[i].component[j].port.low);
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memcpy(octet->data + size,
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&target.pf[i].component[j].port.low,
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sizeof(target.pf[i].component[j].port.low));
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size += sizeof(target.pf[i].component[j].port.low);
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break;
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case GTP_PACKET_FILTER_LOCAL_PORT_RANGE_TYPE:
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case GTP_PACKET_FILTER_REMOTE_PORT_RANGE_TYPE:
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d_assert(size +
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sizeof(target.pf[i].component[j].port.low)
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<= data_len,
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return -1, "encode error");
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target.pf[i].component[j].port.low =
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htons(target.pf[i].component[j].port.low);
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memcpy(octet->data + size,
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&target.pf[i].component[j].port.low,
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sizeof(target.pf[i].component[j].port.low));
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size += sizeof(target.pf[i].component[j].port.low);
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d_assert(size +
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sizeof(target.pf[i].component[j].port.high)
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<= data_len,
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return -1, "encode error");
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target.pf[i].component[j].port.high =
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htons(target.pf[i].component[j].port.high);
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memcpy(octet->data + size,
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&target.pf[i].component[j].port.high,
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sizeof(target.pf[i].component[j].port.high));
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size += sizeof(target.pf[i].component[j].port.high);
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break;
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default:
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d_error("Unknown Packet Filter Type(%d)",
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target.pf[i].component[j].type);
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return -1;
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}
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}
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}
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octet->len = size;
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return octet->len;
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}
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/* 8.21 User Location Information (ULI) */
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c_int16_t gtp_parse_uli(gtp_uli_t *uli, tlv_octet_t *octet)
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{
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gtp_uli_t *source = (gtp_uli_t *)octet->data;
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c_int16_t size = 0;
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d_assert(uli, return -1, "Null param");
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d_assert(octet, return -1, "Null param");
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memset(uli, 0, sizeof(gtp_uli_t));
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uli->flags = source->flags;
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size++;
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if (uli->flags.cgi)
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{
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d_assert(size + sizeof(uli->cgi) <= octet->len,
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return -1, "decode error");
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memcpy(&uli->cgi, octet->data + size, sizeof(uli->cgi));
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uli->cgi.lac = ntohs(uli->cgi.lac);
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uli->cgi.ci = ntohs(uli->cgi.ci);
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size += sizeof(uli->cgi);
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}
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if (uli->flags.sai)
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{
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d_assert(size + sizeof(uli->sai) <= octet->len,
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return -1, "decode error");
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memcpy(&uli->sai, octet->data + size, sizeof(uli->sai));
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uli->sai.lac = ntohs(uli->sai.lac);
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uli->sai.sac = ntohs(uli->sai.sac);
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size += sizeof(uli->sai);
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}
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if (uli->flags.rai)
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{
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d_assert(size + sizeof(uli->rai) <= octet->len,
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return -1, "decode error");
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memcpy(&uli->rai, octet->data + size, sizeof(uli->rai));
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uli->rai.lac = ntohs(uli->rai.lac);
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uli->rai.rac = ntohs(uli->rai.rac);
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size += sizeof(uli->rai);
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}
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if (uli->flags.tai)
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{
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d_assert(size + sizeof(uli->tai) <= octet->len,
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return -1, "decode error");
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memcpy(&uli->tai, octet->data + size, sizeof(uli->tai));
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uli->tai.tac = ntohs(uli->tai.tac);
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size += sizeof(uli->tai);
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}
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if (uli->flags.e_cgi)
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{
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d_assert(size + sizeof(uli->e_cgi) <= octet->len,
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return -1, "decode error");
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memcpy(&uli->e_cgi, octet->data + size, sizeof(uli->e_cgi));
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uli->e_cgi.cell_id = ntohl(uli->e_cgi.cell_id);
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size += sizeof(uli->e_cgi);
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}
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if (uli->flags.lai)
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{
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d_assert(size + sizeof(uli->lai) <= octet->len,
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return -1, "decode error");
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memcpy(&uli->lai, octet->data + size, sizeof(uli->lai));
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uli->lai.lac = ntohs(uli->lai.lac);
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size += sizeof(uli->lai);
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}
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d_assert(size == octet->len, return -1, "decode error");
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return size;
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}
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c_int16_t gtp_build_uli(
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tlv_octet_t *octet, gtp_uli_t *uli, void *data, int data_len)
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{
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gtp_uli_t target;
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c_int16_t size = 0;
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d_assert(uli, return -1, "Null param");
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d_assert(octet, return -1, "Null param");
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d_assert(data, return -1, "Null param");
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d_assert(data_len, return -1, "Null param");
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octet->data = data;
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memcpy(&target, uli, sizeof(gtp_uli_t));
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d_assert(size + sizeof(target.flags) <= data_len,
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return -1, "encode error");
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memcpy(octet->data + size, &target.flags, sizeof(target.flags));
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size += sizeof(target.flags);
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if (target.flags.cgi)
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{
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d_assert(size + sizeof(target.cgi) <= data_len,
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return -1, "encode error");
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target.cgi.lac = htons(target.cgi.lac);
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target.cgi.ci = htons(target.cgi.ci);
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memcpy(octet->data + size, &target.cgi, sizeof(target.cgi));
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size += sizeof(target.cgi);
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}
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if (target.flags.sai)
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{
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d_assert(size + sizeof(target.sai) <= data_len,
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return -1, "encode error");
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target.sai.lac = htons(target.sai.lac);
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target.sai.sac = htons(target.sai.sac);
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memcpy(octet->data + size, &target.sai, sizeof(target.sai));
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size += sizeof(target.sai);
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}
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if (target.flags.rai)
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{
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d_assert(size + sizeof(target.rai) <= data_len,
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return -1, "encode error");
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target.rai.lac = htons(target.rai.lac);
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target.rai.rac = htons(target.rai.rac);
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memcpy(octet->data + size, &target.rai, sizeof(target.rai));
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size += sizeof(target.rai);
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}
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if (target.flags.tai)
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{
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d_assert(size + sizeof(target.tai) <= data_len,
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return -1, "encode error");
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target.tai.tac = htons(target.tai.tac);
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memcpy(octet->data + size, &target.tai, sizeof(target.tai));
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size += sizeof(target.tai);
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}
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if (target.flags.e_cgi)
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{
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d_assert(size + sizeof(target.e_cgi) <= data_len,
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return -1, "encode error");
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target.e_cgi.cell_id = htonl(target.e_cgi.cell_id);
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memcpy(octet->data + size, &target.e_cgi, sizeof(target.e_cgi));
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size += sizeof(target.e_cgi);
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}
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if (target.flags.lai)
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{
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d_assert(size + sizeof(target.lai) <= data_len,
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return -1, "encode error");
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target.lai.lac = htons(target.lai.lac);
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memcpy(octet->data + size, &target.lai, sizeof(target.lai));
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size += sizeof(target.lai);
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}
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octet->len = size;
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return octet->len;
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}
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