a9de470cc7
Since all other apps have been moved to the "app" folder, the autotest app remains alone in the test folder. Rather than having an entire top-level folder for this, we can move it back to where it all started in early versions of DPDK - the "app/" folder. This move has a couple of advantages: * This reduces clutter at the top level of the project, due to one less folder. * It eliminates the separate build task necessary for building the autotests using make "make test-build" which means that developers are less likely to miss something in their own compilation tests * It re-aligns the final location of the test binary in the app folder when building with make with it's location in the source tree. For meson builds, the autotest app is different from the other apps in that it needs a series of different test cases defined for it for use by "meson test". Therefore, it does not get built as part of the main loop in the app folder, but gets built separately at the end. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
132 lines
2.6 KiB
C
132 lines
2.6 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <rte_common.h>
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#include <rte_cycles.h>
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#include "test.h"
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#define N 10000
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/*
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* Cycles test
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* ===========
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*
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* - Loop N times and check that the timer always increments and
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* never decrements during this loop.
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*
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* - Wait one second using rte_usleep() and check that the increment
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* of cycles is correct with regard to the frequency of the timer.
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*/
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static int
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check_wait_one_second(void)
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{
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uint64_t cycles, prev_cycles;
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uint64_t hz = rte_get_timer_hz();
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uint64_t max_inc = (hz / 100); /* 10 ms max between 2 reads */
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/* check that waiting 1 second is precise */
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prev_cycles = rte_get_timer_cycles();
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rte_delay_us(1000000);
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cycles = rte_get_timer_cycles();
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if ((uint64_t)(cycles - prev_cycles) > (hz + max_inc)) {
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printf("delay_us is not accurate: too long\n");
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return -1;
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}
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if ((uint64_t)(cycles - prev_cycles) < (hz - max_inc)) {
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printf("delay_us is not accurate: too short\n");
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return -1;
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}
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return 0;
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}
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static int
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test_cycles(void)
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{
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unsigned i;
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uint64_t start_cycles, cycles, prev_cycles;
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uint64_t hz = rte_get_timer_hz();
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uint64_t max_inc = (hz / 100); /* 10 ms max between 2 reads */
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/* check that the timer is always incrementing */
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start_cycles = rte_get_timer_cycles();
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prev_cycles = start_cycles;
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for (i=0; i<N; i++) {
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cycles = rte_get_timer_cycles();
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if ((uint64_t)(cycles - prev_cycles) > max_inc) {
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printf("increment too high or going backwards\n");
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return -1;
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}
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prev_cycles = cycles;
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}
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return check_wait_one_second();
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}
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REGISTER_TEST_COMMAND(cycles_autotest, test_cycles);
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/*
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* One second precision test with rte_delay_us_sleep.
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*/
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static int
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test_delay_us_sleep(void)
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{
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rte_delay_us_callback_register(rte_delay_us_sleep);
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return check_wait_one_second();
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}
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REGISTER_TEST_COMMAND(delay_us_sleep_autotest, test_delay_us_sleep);
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/*
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* rte_delay_us_callback test
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*
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* - check if callback is correctly registered/unregistered
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*
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*/
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static unsigned int pattern;
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static void my_rte_delay_us(unsigned int us)
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{
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pattern += us;
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}
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static int
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test_user_delay_us(void)
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{
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pattern = 0;
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rte_delay_us(2);
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if (pattern != 0)
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return -1;
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/* register custom delay function */
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rte_delay_us_callback_register(my_rte_delay_us);
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rte_delay_us(2);
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if (pattern != 2)
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return -1;
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rte_delay_us(3);
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if (pattern != 5)
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return -1;
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/* restore original delay function */
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rte_delay_us_callback_register(rte_delay_us_block);
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rte_delay_us(3);
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if (pattern != 5)
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return -1;
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return 0;
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}
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REGISTER_TEST_COMMAND(user_delay_us, test_user_delay_us);
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