gmac get mac form eeprom

hc

2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/samples/bpf/sockex3_user.c
..
..
@@ -1,17 +1,12 @@
1
1
 // SPDX-License-Identifier: GPL-2.0
2
2
 #include <stdio.h>
3
3
 #include <assert.h>
4
-#include <linux/bpf.h>
5
4
 #include <bpf/bpf.h>
6
-#include "bpf_load.h"
5
+#include <bpf/libbpf.h>
7
6
 #include "sock_example.h"
8
7
 #include <unistd.h>
9
8
 #include <arpa/inet.h>
10
9
 #include <sys/resource.h>
11
-
12
-#define PARSE_IP 3
13
-#define PARSE_IP_PROG_FD (prog_fd[0])
14
-#define PROG_ARRAY_FD (map_fd[0])
15
10
 
16
11
 struct flow_key_record {
17
12
 	__be32 src;
..
..
@@ -30,35 +25,59 @@
30
25
 
31
26
 int main(int argc, char **argv)
32
27
 {
28
+	int i, sock, key, fd, main_prog_fd, jmp_table_fd, hash_map_fd;
33
29
 	struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
30
+	struct bpf_program *prog;
31
+	struct bpf_object *obj;
32
+	const char *section;
34
33
 	char filename[256];
35
34
 	FILE *f;
36
-	int i, sock, err, id, key = PARSE_IP;
37
-	struct bpf_prog_info info = {};
38
-	uint32_t info_len = sizeof(info);
39
35
 
40
36
 	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
41
37
 	setrlimit(RLIMIT_MEMLOCK, &r);
42
38
 
43
-	if (load_bpf_file(filename)) {
44
-		printf("%s", bpf_log_buf);
45
-		return 1;
39
+	obj = bpf_object__open_file(filename, NULL);
40
+	if (libbpf_get_error(obj)) {
41
+		fprintf(stderr, "ERROR: opening BPF object file failed\n");
42
+		return 0;
46
43
 	}
47
44
 
48
-	/* Test fd array lookup which returns the id of the bpf_prog */
49
-	err = bpf_obj_get_info_by_fd(PARSE_IP_PROG_FD, &info, &info_len);
50
-	assert(!err);
51
-	err = bpf_map_lookup_elem(PROG_ARRAY_FD, &key, &id);
52
-	assert(!err);
53
-	assert(id == info.id);
45
+	/* load BPF program */
46
+	if (bpf_object__load(obj)) {
47
+		fprintf(stderr, "ERROR: loading BPF object file failed\n");
48
+		goto cleanup;
49
+	}
50
+
51
+	jmp_table_fd = bpf_object__find_map_fd_by_name(obj, "jmp_table");
52
+	hash_map_fd = bpf_object__find_map_fd_by_name(obj, "hash_map");
53
+	if (jmp_table_fd < 0 || hash_map_fd < 0) {
54
+		fprintf(stderr, "ERROR: finding a map in obj file failed\n");
55
+		goto cleanup;
56
+	}
57
+
58
+	bpf_object__for_each_program(prog, obj) {
59
+		fd = bpf_program__fd(prog);
60
+
61
+		section = bpf_program__section_name(prog);
62
+		if (sscanf(section, "socket/%d", &key) != 1) {
63
+			fprintf(stderr, "ERROR: finding prog failed\n");
64
+			goto cleanup;
65
+		}
66
+
67
+		if (key == 0)
68
+			main_prog_fd = fd;
69
+		else
70
+			bpf_map_update_elem(jmp_table_fd, &key, &fd, BPF_ANY);
71
+	}
54
72
 
55
73
 	sock = open_raw_sock("lo");
56
74
 
57
-	assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd[4],
75
+	/* attach BPF program to socket */
76
+	assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &main_prog_fd,
58
77
 			  sizeof(__u32)) == 0);
59
78
 
60
79
 	if (argc > 1)
61
-		f = popen("ping -c5 localhost", "r");
80
+		f = popen("ping -4 -c5 localhost", "r");
62
81
 	else
63
82
 		f = popen("netperf -l 4 localhost", "r");
64
83
 	(void) f;
..
..
@@ -69,8 +88,8 @@
69
88
 
70
89
 		sleep(1);
71
90
 		printf("IP     src.port -> dst.port               bytes      packets\n");
72
-		while (bpf_map_get_next_key(map_fd[2], &key, &next_key) == 0) {
73
-			bpf_map_lookup_elem(map_fd[2], &next_key, &value);
91
+		while (bpf_map_get_next_key(hash_map_fd, &key, &next_key) == 0) {
92
+			bpf_map_lookup_elem(hash_map_fd, &next_key, &value);
74
93
 			printf("%s.%05d -> %s.%05d %12lld %12lld\n",
75
94
 			       inet_ntoa((struct in_addr){htonl(next_key.src)}),
76
95
 			       next_key.port16[0],
..
..
@@ -80,5 +99,8 @@
80
99
 			key = next_key;
81
100
 		}
82
101
 	}
102
+
103
+cleanup:
104
+	bpf_object__close(obj);
83
105
 	return 0;
84
106
 }