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/*
* Copyright (c) 2021 Graphiant, Inc.
* 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.
*/
#include <vnet/policer/policer.h>
#define PKT_LEN 500
static clib_error_t *
policer_test (vlib_main_t *vm, unformat_input_t *input,
vlib_cli_command_t *cmd_arg)
{
int policer_index, i;
uint rate_kbps, burst, num_pkts;
double total_bytes, cpu_ticks_per_pkt, time = 0;
double cpu_speed, cpu_ticks_per_byte;
policer_result_e result, input_colour = POLICE_CONFORM;
uint64_t policer_time;
policer_t *pol;
vnet_policer_main_t *pm = &vnet_policer_main;
if (!unformat (input, "index %d", &policer_index) || /* policer to use */
!unformat (input, "rate %u", &rate_kbps) || /* rate to send at in kbps */
!unformat (input, "burst %u", &burst) || /* burst to send in ms */
!unformat (input, "colour %u",
&input_colour)) /* input colour if aware */
return clib_error_return (0, "Policer test failed to parse params");
total_bytes = (rate_kbps * burst) / 8;
num_pkts = total_bytes / PKT_LEN;
cpu_speed = (double) os_cpu_clock_frequency ();
cpu_ticks_per_byte = cpu_speed / (rate_kbps * 125);
cpu_ticks_per_pkt = cpu_ticks_per_byte * PKT_LEN;
pol = &pm->policers[policer_index];
for (i = 0; i < num_pkts; i++)
{
time += cpu_ticks_per_pkt;
policer_time = ((uint64_t) time) >> POLICER_TICKS_PER_PERIOD_SHIFT;
result = vnet_police_packet (pol, PKT_LEN, input_colour, policer_time);
vlib_increment_combined_counter (&policer_counters[result], 0,
policer_index, 1, PKT_LEN);
}
return NULL;
}
VLIB_CLI_COMMAND (test_policer_command, static) = {
.path = "test policing",
.short_help = "policer unit test helper - DO NOT RUN ON A LIVE SYSTEM",
.function = policer_test,
};
clib_error_t *
policer_test_init (vlib_main_t *vm)
{
return 0;
}
VLIB_INIT_FUNCTION (policer_test_init);
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