1 files changed, 118 insertions, 0 deletions
diff --git a/samples/bpf/xdp_monitor_user.c b/samples/bpf/xdp_monitor_user.c
new file mode 100644
index 000000000..58015eb2f
--- /dev/null
+++ b/samples/bpf/xdp_monitor_user.c
@@ -0,0 +1,118 @@
+// 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);
+}