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// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2017 Jesper Dangaard Brouer, Red Hat, Inc. */
static const char *__doc__=
"XDP monitor tool, based on tracepoints\n";
static const char *__doc_err_only__=
" NOTICE: Only tracking XDP redirect errors\n"
" Enable redirect success stats via '-s/--stats'\n"
" (which comes with a per packet processing overhead)\n";
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <locale.h>
#include <getopt.h>
#include <net/if.h>
#include <time.h>
#include <signal.h>
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
#include "bpf_util.h"
#include "xdp_sample_user.h"
#include "xdp_monitor.skel.h"
static int mask = SAMPLE_REDIRECT_ERR_CNT | SAMPLE_CPUMAP_ENQUEUE_CNT |
SAMPLE_CPUMAP_KTHREAD_CNT | SAMPLE_EXCEPTION_CNT |
SAMPLE_DEVMAP_XMIT_CNT | SAMPLE_DEVMAP_XMIT_CNT_MULTI;
DEFINE_SAMPLE_INIT(xdp_monitor);
static const struct option long_options[] = {
{ "help", no_argument, NULL, 'h' },
{ "stats", no_argument, NULL, 's' },
{ "interval", required_argument, NULL, 'i' },
{ "verbose", no_argument, NULL, 'v' },
{}
};
int main(int argc, char **argv)
{
unsigned long interval = 2;
int ret = EXIT_FAIL_OPTION;
struct xdp_monitor *skel;
bool errors_only = true;
int longindex = 0, opt;
bool error = true;
/* Parse commands line args */
while ((opt = getopt_long(argc, argv, "si:vh",
long_options, &longindex)) != -1) {
switch (opt) {
case 's':
errors_only = false;
mask |= SAMPLE_REDIRECT_CNT;
break;
case 'i':
interval = strtoul(optarg, NULL, 0);
break;
case 'v':
sample_switch_mode();
break;
case 'h':
error = false;
default:
sample_usage(argv, long_options, __doc__, mask, error);
return ret;
}
}
skel = xdp_monitor__open();
if (!skel) {
fprintf(stderr, "Failed to xdp_monitor__open: %s\n",
strerror(errno));
ret = EXIT_FAIL_BPF;
goto end;
}
ret = sample_init_pre_load(skel);
if (ret < 0) {
fprintf(stderr, "Failed to sample_init_pre_load: %s\n", strerror(-ret));
ret = EXIT_FAIL_BPF;
goto end_destroy;
}
ret = xdp_monitor__load(skel);
if (ret < 0) {
fprintf(stderr, "Failed to xdp_monitor__load: %s\n", strerror(errno));
ret = EXIT_FAIL_BPF;
goto end_destroy;
}
ret = sample_init(skel, mask);
if (ret < 0) {
fprintf(stderr, "Failed to initialize sample: %s\n", strerror(-ret));
ret = EXIT_FAIL_BPF;
goto end_destroy;
}
if (errors_only)
printf("%s", __doc_err_only__);
ret = sample_run(interval, NULL, NULL);
if (ret < 0) {
fprintf(stderr, "Failed during sample run: %s\n", strerror(-ret));
ret = EXIT_FAIL;
goto end_destroy;
}
ret = EXIT_OK;
end_destroy:
xdp_monitor__destroy(skel);
end:
sample_exit(ret);
}
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