emac_membuf.cpp

00001 /*
00002  * Copyright (c) 2017, ARM Limited, All Rights Reserved
00003  * SPDX-License-Identifier: Apache-2.0
00004  *
00005  * Licensed under the Apache License, Version 2.0 (the "License"); you may
00006  * not use this file except in compliance with the License.
00007  * You may obtain a copy of the License at
00008  *
00009  * http://www.apache.org/licenses/LICENSE-2.0
00010  *
00011  * Unless required by applicable law or agreed to in writing, software
00012  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
00013  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  * See the License for the specific language governing permissions and
00015  * limitations under the License.
00016  */
00017 
00018 #include "mbed.h"
00019 #include "greentea-client/test_env.h"
00020 #include "unity.h"
00021 #include "utest.h"
00022 
00023 #include "mbed.h"
00024 
00025 #include "EMAC.h"
00026 #include "EMACMemoryManager.h"
00027 #include "emac_TestMemoryManager.h"
00028 
00029 #include "emac_initialize.h"
00030 #include "emac_membuf.h"
00031 #include "emac_util.h"
00032 
00033 int emac_if_memory_buffer_read(void *buf, unsigned char *eth_frame)
00034 {
00035     int eth_frame_index = 0;
00036     int invalid_data_index = 0;
00037 
00038     for (emac_mem_buf_t *mem_buf = buf; mem_buf != NULL; mem_buf = emac_m_mngr_get()->get_next(mem_buf)) {
00039         unsigned char *buf_payload = (unsigned char *) emac_m_mngr_get()->get_ptr(mem_buf);
00040         int buf_payload_len = emac_m_mngr_get()->get_len(mem_buf);
00041 
00042         for (int index = 0; index < buf_payload_len; index++) {
00043             if (eth_frame_index < ETH_FRAME_HEADER_LEN) {
00044                 eth_frame[eth_frame_index] = buf_payload[index];
00045             } else {
00046                 if (buf_payload[index] != (uint8_t) eth_frame_index) {
00047                     invalid_data_index = eth_frame_index;
00048                     break;
00049                 }
00050             }
00051             eth_frame_index++;
00052         }
00053     }
00054 
00055     return invalid_data_index;
00056 }
00057 
00058 void emac_if_memory_buffer_write(void *buf, unsigned char *eth_frame, bool write_data)
00059 {
00060     int eth_frame_index = 0;
00061 
00062     for (emac_mem_buf_t *mem_buf = buf; mem_buf != NULL; mem_buf = emac_m_mngr_get()->get_next(mem_buf)) {
00063         unsigned char *buf_payload = (unsigned char *) emac_m_mngr_get()->get_ptr(mem_buf);
00064         int buf_payload_len = emac_m_mngr_get()->get_len(mem_buf);
00065 
00066         for (int index = 0; index < buf_payload_len; index++) {
00067             if (eth_frame_index < ETH_FRAME_HEADER_LEN) {
00068                 buf_payload[index] = eth_frame[eth_frame_index];
00069             } else if (write_data) {
00070                 buf_payload[index] = (char) eth_frame_index;
00071             } else {
00072                 break;
00073             }
00074             eth_frame_index++;
00075         }
00076     }
00077 }