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 #if MBED_CONF_APP_TEST_WIFI || MBED_CONF_APP_TEST_ETHERNET
00024 
00025 #include "lwip/opt.h" /* ETH_PAD_SIZE */
00026 
00027 #include "mbed.h"
00028 
00029 #include "EMAC.h"
00030 #include "EMACMemoryManager.h"
00031 #include "emac_TestMemoryManager.h"
00032 
00033 #include "emac_initialize.h"
00034 #include "emac_membuf.h"
00035 #include "emac_util.h"
00036 
00037 int emac_if_memory_buffer_read(void *buf, unsigned char *eth_frame)
00038 {
00039     int eth_frame_index = 0;
00040     int invalid_data_index = 0;
00041 
00042     for (emac_mem_buf_t *mem_buf = buf; mem_buf != NULL; mem_buf = emac_m_mngr_get()->get_next(mem_buf)) {
00043         unsigned char *buf_payload = (unsigned char *) emac_m_mngr_get()->get_ptr(mem_buf);
00044         int buf_payload_len = emac_m_mngr_get()->get_len(mem_buf);
00045 
00046         for (int index = 0; index < buf_payload_len; index++) {
00047             if (eth_frame_index < ETH_FRAME_HEADER_LEN) {
00048                 eth_frame[eth_frame_index] = buf_payload[index];
00049             } else {
00050                 if (buf_payload[index] != (uint8_t) eth_frame_index) {
00051                     invalid_data_index = eth_frame_index;
00052                     break;
00053                 }
00054             }
00055             eth_frame_index++;
00056         }
00057     }
00058 
00059     return invalid_data_index;
00060 }
00061 
00062 void emac_if_memory_buffer_write(void *buf, unsigned char *eth_frame, bool write_data)
00063 {
00064     int eth_frame_index = 0;
00065 
00066     for (emac_mem_buf_t *mem_buf = buf; mem_buf != NULL; mem_buf = emac_m_mngr_get()->get_next(mem_buf)) {
00067         unsigned char *buf_payload = (unsigned char *) emac_m_mngr_get()->get_ptr(mem_buf);
00068         int buf_payload_len = emac_m_mngr_get()->get_len(mem_buf);
00069 
00070         for (int index = 0; index < buf_payload_len; index++) {
00071             if (eth_frame_index < ETH_FRAME_HEADER_LEN) {
00072                 buf_payload[index] = eth_frame[eth_frame_index];
00073             } else if (write_data) {
00074                 buf_payload[index] = (char) eth_frame_index;
00075             } else {
00076                 break;
00077             }
00078             eth_frame_index++;
00079         }
00080     }
00081 }
00082 
00083 #endif