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/*
// Copyright (c) 2010-2017 Intel Corporation
//
// 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 <inttypes.h>
#include <string.h>
#include <rte_launch.h>
#include <rte_cycles.h>
#include <rte_atomic.h>
#include "run.h"
#include "prox_cfg.h"
#include "prox_port_cfg.h"
#include "quit.h"
#include "commands.h"
#include "main.h"
#include "log.h"
#include "display.h"
#include "stats.h"
#include "stats_cons.h"
#include "stats_cons_log.h"
#include "stats_cons_cli.h"
#include "input.h"
#include "input_curses.h"
#include "input_conn.h"
static int needs_refresh;
static uint64_t update_interval;
static int stop_prox = 0; /* set to 1 to stop prox */
void set_update_interval(uint32_t msec)
{
update_interval = msec_to_tsc(msec);
}
void req_refresh(void)
{
needs_refresh = 1;
}
void quit(void)
{
static rte_atomic32_t already_leaving = RTE_ATOMIC32_INIT(0);
if (!rte_atomic32_test_and_set(&already_leaving))
return;
plog_info("Leaving...\n");
if (lcore_cfg == NULL)
exit(EXIT_SUCCESS);
stop_core_all(-1);
stop_prox = 1;
}
static void update_link_states(void)
{
struct prox_port_cfg *port_cfg;
struct rte_eth_link link;
for (uint8_t portid = 0; portid < PROX_MAX_PORTS; ++portid) {
if (!prox_port_cfg[portid].active) {
continue;
}
port_cfg = &prox_port_cfg[portid];
rte_eth_link_get_nowait(portid, &link);
port_cfg->link_up = link.link_status;
port_cfg->link_speed = link.link_speed;
}
}
static struct stats_cons stats_cons[8];
static size_t n_stats_cons = 0;
static uint16_t stats_cons_flags = 0;
static void stats_cons_add(struct stats_cons *sc)
{
if (n_stats_cons == sizeof(stats_cons)/sizeof(stats_cons[0]))
return;
stats_cons[n_stats_cons++] = *sc;
sc->init();
stats_cons_flags |= sc->flags;
}
static void stats_cons_notify(void)
{
for (size_t i = 0; i < n_stats_cons; ++i) {
stats_cons[i].notify();
}
}
static void stats_cons_refresh(void)
{
for (size_t i = 0; i < n_stats_cons; ++i) {
if (stats_cons[i].refresh)
stats_cons[i].refresh();
}
}
static void stats_cons_finish(void)
{
for (size_t i = 0; i < n_stats_cons; ++i) {
if (stats_cons[i].finish)
stats_cons[i].finish();
}
}
static void busy_wait_until(uint64_t deadline)
{
while (rte_rdtsc() < deadline)
;
}
static void multiplexed_input_stats(uint64_t deadline)
{
input_proc_until(deadline);
if (needs_refresh) {
needs_refresh = 0;
stats_cons_refresh();
}
if (rte_atomic32_read(&lsc)) {
rte_atomic32_dec(&lsc);
update_link_states();
stats_cons_refresh();
}
}
static void print_warnings(void)
{
if (get_n_warnings() == -1) {
plog_info("Warnings disabled\n");
}
else if (get_n_warnings() > 0) {
int n_print = get_n_warnings() < 5? get_n_warnings(): 5;
plog_info("Started with %d warnings, last %d warnings: \n", get_n_warnings(), n_print);
for (int i = -n_print + 1; i <= 0; ++i) {
plog_info("%s", get_warning(i));
}
}
else {
plog_info("Started without warnings\n");
}
}
/* start main loop */
void __attribute__((noreturn)) run(uint32_t flags)
{
uint64_t cur_tsc;
uint64_t next_update;
uint64_t stop_tsc = 0;
const uint64_t update_interval_threshold = usec_to_tsc(1);
if (flags & DSF_LISTEN_TCP)
PROX_PANIC(reg_input_tcp(), "Failed to start listening on TCP port 8474: %s\n", strerror(errno));
if (flags & DSF_LISTEN_UDS)
PROX_PANIC(reg_input_uds(), "Failed to start listening on UDS /tmp/prox.sock: %s\n", strerror(errno));
if (prox_cfg.use_stats_logger)
stats_cons_add(stats_cons_log_get());
stats_init(prox_cfg.start_time, prox_cfg.duration_time);
stats_update(STATS_CONS_F_ALL);
switch (prox_cfg.ui) {
case PROX_UI_CURSES:
reg_input_curses();
stats_cons_add(&display);
break;
case PROX_UI_CLI:
stats_cons_add(stats_cons_cli_get());
break;
case PROX_UI_NONE:
default:
break;
}
if (flags & DSF_AUTOSTART)
start_core_all(-1);
else
stop_core_all(-1);
cur_tsc = rte_rdtsc();
if (prox_cfg.duration_time != 0) {
stop_tsc = cur_tsc + sec_to_tsc(prox_cfg.start_time + prox_cfg.duration_time);
}
stats_cons_notify();
stats_cons_refresh();
update_interval = str_to_tsc(prox_cfg.update_interval_str);
next_update = cur_tsc + update_interval;
cmd_rx_tx_info();
print_warnings();
while (stop_prox == 0) {
if (update_interval < update_interval_threshold)
busy_wait_until(next_update);
else
multiplexed_input_stats(next_update);
next_update += update_interval;
stats_update(stats_cons_flags);
stats_cons_notify();
if (stop_tsc && rte_rdtsc() >= stop_tsc) {
stop_prox = 1;
}
}
stats_cons_finish();
if (prox_cfg.flags & DSF_WAIT_ON_QUIT) {
stop_core_all(-1);
}
if (prox_cfg.logbuf) {
file_print(prox_cfg.logbuf);
}
display_end();
exit(EXIT_SUCCESS);
}
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