kopia lustrzana https://github.com/espressif/esp-idf
103 wiersze
2.6 KiB
C
103 wiersze
2.6 KiB
C
/*
|
|
* Portable interface to the CPU cycle counter
|
|
*
|
|
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
* This file is part of mbed TLS (https://tls.mbed.org)
|
|
*/
|
|
|
|
/*
|
|
* mbedtls_timing_get_timer()m mbedtls_timing_set_delay() and
|
|
* mbedtls_timing_set_delay only abstracted from mbedtls/library/timing.c
|
|
* as that does not build on ESP-IDF but these 2 functions are needed for
|
|
* DTLS (in particular mbedtls_ssl_set_timer_cb() must be called for DTLS
|
|
* which requires these 2 delay functions).
|
|
*/
|
|
|
|
#if !defined(MBEDTLS_CONFIG_FILE)
|
|
#include "mbedtls/config.h"
|
|
#else
|
|
#include MBEDTLS_CONFIG_FILE
|
|
#endif
|
|
|
|
#if !defined(MBEDTLS_ESP_TIMING_C)
|
|
|
|
#include <sys/time.h>
|
|
#include "mbedtls/timing.h"
|
|
|
|
struct _hr_time
|
|
{
|
|
struct timeval start;
|
|
};
|
|
|
|
unsigned long mbedtls_timing_get_timer( struct mbedtls_timing_hr_time *val, int reset )
|
|
{
|
|
struct _hr_time *t = (struct _hr_time *) val;
|
|
|
|
if( reset )
|
|
{
|
|
gettimeofday( &t->start, NULL );
|
|
return( 0 );
|
|
}
|
|
else
|
|
{
|
|
unsigned long delta;
|
|
struct timeval now;
|
|
gettimeofday( &now, NULL );
|
|
delta = ( now.tv_sec - t->start.tv_sec ) * 1000ul
|
|
+ ( now.tv_usec - t->start.tv_usec ) / 1000;
|
|
return( delta );
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set delays to watch
|
|
*/
|
|
void mbedtls_timing_set_delay( void *data, uint32_t int_ms, uint32_t fin_ms )
|
|
{
|
|
mbedtls_timing_delay_context *ctx = (mbedtls_timing_delay_context *) data;
|
|
|
|
ctx->int_ms = int_ms;
|
|
ctx->fin_ms = fin_ms;
|
|
|
|
if( fin_ms != 0 )
|
|
(void) mbedtls_timing_get_timer( &ctx->timer, 1 );
|
|
}
|
|
|
|
/*
|
|
* Get number of delays expired
|
|
*/
|
|
int mbedtls_timing_get_delay( void *data )
|
|
{
|
|
mbedtls_timing_delay_context *ctx = (mbedtls_timing_delay_context *) data;
|
|
unsigned long elapsed_ms;
|
|
|
|
if( ctx->fin_ms == 0 )
|
|
return( -1 );
|
|
|
|
elapsed_ms = mbedtls_timing_get_timer( &ctx->timer, 0 );
|
|
|
|
if( elapsed_ms >= ctx->fin_ms )
|
|
return( 2 );
|
|
|
|
if( elapsed_ms >= ctx->int_ms )
|
|
return( 1 );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
#endif /* MBEDTLS_ESP_TIMING_C */
|