1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
2 #ifndef FLOW_DISSECTOR_LOAD
3 #define FLOW_DISSECTOR_LOAD
4 
5 #include <bpf/bpf.h>
6 #include <bpf/libbpf.h>
7 #include "testing_helpers.h"
8 
9 static inline int bpf_flow_load(struct bpf_object **obj,
10 				const char *path,
11 				const char *prog_name,
12 				const char *map_name,
13 				const char *keys_map_name,
14 				int *prog_fd,
15 				int *keys_fd)
16 {
17 	struct bpf_program *prog, *main_prog;
18 	struct bpf_map *prog_array, *keys;
19 	int prog_array_fd;
20 	int ret, fd, i;
21 
22 	ret = bpf_prog_test_load(path, BPF_PROG_TYPE_FLOW_DISSECTOR, obj,
23 			    prog_fd);
24 	if (ret)
25 		return ret;
26 
27 	main_prog = bpf_object__find_program_by_name(*obj, prog_name);
28 	if (!main_prog)
29 		return -1;
30 
31 	*prog_fd = bpf_program__fd(main_prog);
32 	if (*prog_fd < 0)
33 		return -1;
34 
35 	prog_array = bpf_object__find_map_by_name(*obj, map_name);
36 	if (!prog_array)
37 		return -1;
38 
39 	prog_array_fd = bpf_map__fd(prog_array);
40 	if (prog_array_fd < 0)
41 		return -1;
42 
43 	if (keys_map_name && keys_fd) {
44 		keys = bpf_object__find_map_by_name(*obj, keys_map_name);
45 		if (!keys)
46 			return -1;
47 
48 		*keys_fd = bpf_map__fd(keys);
49 		if (*keys_fd < 0)
50 			return -1;
51 	}
52 
53 	i = 0;
54 	bpf_object__for_each_program(prog, *obj) {
55 		fd = bpf_program__fd(prog);
56 		if (fd < 0)
57 			return fd;
58 
59 		if (fd != *prog_fd) {
60 			bpf_map_update_elem(prog_array_fd, &i, &fd, BPF_ANY);
61 			++i;
62 		}
63 	}
64 
65 	return 0;
66 }
67 
68 #endif /* FLOW_DISSECTOR_LOAD */
69