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/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
#ifndef FLOW_DISSECTOR_LOAD
#define FLOW_DISSECTOR_LOAD
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
static inline int bpf_flow_load(struct bpf_object **obj,
const char *path,
const char *section_name,
const char *map_name,
const char *keys_map_name,
int *prog_fd,
int *keys_fd)
{
struct bpf_program *prog, *main_prog;
struct bpf_map *prog_array, *keys;
int prog_array_fd;
int ret, fd, i;
ret = bpf_prog_load(path, BPF_PROG_TYPE_FLOW_DISSECTOR, obj,
prog_fd);
if (ret)
return ret;
main_prog = NULL;
bpf_object__for_each_program(prog, *obj) {
if (strcmp(section_name, bpf_program__section_name(prog)) == 0) {
main_prog = prog;
break;
}
}
if (!main_prog)
return -1;
*prog_fd = bpf_program__fd(main_prog);
if (*prog_fd < 0)
return -1;
prog_array = bpf_object__find_map_by_name(*obj, map_name);
if (!prog_array)
return -1;
prog_array_fd = bpf_map__fd(prog_array);
if (prog_array_fd < 0)
return -1;
if (keys_map_name && keys_fd) {
keys = bpf_object__find_map_by_name(*obj, keys_map_name);
if (!keys)
return -1;
*keys_fd = bpf_map__fd(keys);
if (*keys_fd < 0)
return -1;
}
i = 0;
bpf_object__for_each_program(prog, *obj) {
fd = bpf_program__fd(prog);
if (fd < 0)
return fd;
if (fd != *prog_fd) {
bpf_map_update_elem(prog_array_fd, &i, &fd, BPF_ANY);
++i;
}
}
return 0;
}
#endif /* FLOW_DISSECTOR_LOAD */
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