samples: bpf: rename libbpf.h to bpf_insn.h

The libbpf.h file in samples is clashing with libbpf's header.
Since it only includes a subset of filter.h instruction helpers
rename it to bpf_insn.h.  Drop the unnecessary include of bpf/bpf.h.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

samples/bpf/libbpf.h → samples/bpf/bpf_insn.h

 /* SPDX-License-Identifier: GPL-2.0 */
-/* eBPF mini library */
-#ifndef __LIBBPF_H
-#define __LIBBPF_H
-
-#include <bpf/bpf.h>
+/* eBPF instruction mini library */
+#ifndef __BPF_INSN_H
+#define __BPF_INSN_H
 
 struct bpf_insn;
 

samples/bpf/cookie_uid_helper_example.c

@@ -51,7 +51,7 @@
 #include <sys/types.h>
 #include <unistd.h>
 #include <bpf/bpf.h>
-#include "libbpf.h"
+#include "bpf_insn.h"
 
 #define PORT 8888
 

samples/bpf/fds_example.c

@@ -12,8 +12,10 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 
+#include <bpf/bpf.h>
+
+#include "bpf_insn.h"
 #include "bpf_load.h"
-#include "libbpf.h"
 #include "sock_example.h"
 
 #define BPF_F_PIN	(1 << 0)

samples/bpf/sock_example.c

@@ -26,7 +26,8 @@
 #include <linux/if_ether.h>
 #include <linux/ip.h>
 #include <stddef.h>
-#include "libbpf.h"
+#include <bpf/bpf.h>
+#include "bpf_insn.h"
 #include "sock_example.h"
 
 char bpf_log_buf[BPF_LOG_BUF_SIZE];

samples/bpf/test_cgrp2_attach.c

@@ -28,8 +28,9 @@
 #include <fcntl.h>
 
 #include <linux/bpf.h>
+#include <bpf/bpf.h>
 
-#include "libbpf.h"
+#include "bpf_insn.h"
 
 enum {
 	MAP_KEY_PACKETS,

samples/bpf/test_cgrp2_attach2.c

@@ -24,8 +24,9 @@
 #include <unistd.h>
 
 #include <linux/bpf.h>
+#include <bpf/bpf.h>
 
-#include "libbpf.h"
+#include "bpf_insn.h"
 #include "cgroup_helpers.h"
 
 #define FOO		"/foo"

samples/bpf/test_cgrp2_sock.c

@@ -21,8 +21,9 @@
 #include <net/if.h>
 #include <inttypes.h>
 #include <linux/bpf.h>
+#include <bpf/bpf.h>
 
-#include "libbpf.h"
+#include "bpf_insn.h"
 
 char bpf_log_buf[BPF_LOG_BUF_SIZE];
 

samples/bpf/test_cgrp2_sock2.c

@@ -19,8 +19,9 @@
 #include <fcntl.h>
 #include <net/if.h>
 #include <linux/bpf.h>
+#include <bpf/bpf.h>
 
-#include "libbpf.h"
+#include "bpf_insn.h"
 #include "bpf_load.h"
 
 static int usage(const char *argv0)