rtl88x2CE_WiFi_linux driver

hc

2024-05-10 cde9070d9970eef1f7ec2360586c802a16230ad8

 kernel/samples/bpf/lathist_user.c
..
..
@@ -1,17 +1,13 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
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  * Copyright (c) 2015 BMW Car IT GmbH
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of version 2 of the GNU General Public
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- * License as published by the Free Software Foundation.
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  */
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 #include <stdio.h>
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 #include <unistd.h>
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 #include <stdlib.h>
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 #include <signal.h>
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-#include <linux/bpf.h>
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+#include <bpf/libbpf.h>
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 #include <bpf/bpf.h>
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-#include "bpf_load.h"
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11
 
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 #define MAX_ENTRIES	20
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13
 #define MAX_CPU		4
..
..
@@ -84,20 +80,51 @@
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80
 
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 int main(int argc, char **argv)
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 {
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+	struct bpf_link *links[2];
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+	struct bpf_program *prog;
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+	struct bpf_object *obj;
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 	char filename[256];
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+	int map_fd, i = 0;
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88
 
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 	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
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+	obj = bpf_object__open_file(filename, NULL);
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+	if (libbpf_get_error(obj)) {
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+		fprintf(stderr, "ERROR: opening BPF object file failed\n");
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+		return 0;
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+	}
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-	if (load_bpf_file(filename)) {
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-		printf("%s", bpf_log_buf);
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-		return 1;
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+	/* load BPF program */
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+	if (bpf_object__load(obj)) {
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+		fprintf(stderr, "ERROR: loading BPF object file failed\n");
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+		goto cleanup;
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+	}
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+
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+	map_fd = bpf_object__find_map_fd_by_name(obj, "my_lat");
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+	if (map_fd < 0) {
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+		fprintf(stderr, "ERROR: finding a map in obj file failed\n");
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+		goto cleanup;
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+	}
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+
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+	bpf_object__for_each_program(prog, obj) {
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+		links[i] = bpf_program__attach(prog);
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+		if (libbpf_get_error(links[i])) {
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+			fprintf(stderr, "ERROR: bpf_program__attach failed\n");
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+			links[i] = NULL;
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+			goto cleanup;
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+		}
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+		i++;
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 	}
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117
 
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 	while (1) {
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-		get_data(map_fd[1]);
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+		get_data(map_fd);
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 		print_hist();
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 		sleep(5);
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 	}
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123
 
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+cleanup:
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+	for (i--; i >= 0; i--)
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+		bpf_link__destroy(links[i]);
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+
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+	bpf_object__close(obj);
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 	return 0;
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 }