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