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samples/bpf: Stop using bpf_object__find_program_by_title API. 

bpf_object__find_program_by_title is going to be deprecated.
Replace use cases of bpf_object__find_program_by_title in samples/bpf/
with bpf_object__for_each_program.

Signed-off-by: Kui-Feng Lee <kuifeng@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211214035931.1148209-3-kuifeng@fb.com
This commit is contained in:
Kui-Feng Lee 2021-12-13 19:59:29 -08:00 committed by Andrii Nakryiko
parent a393ea80a2
commit 7490d59268
2 changed files with 20 additions and 3 deletions
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11
samples/bpf/hbm.c
View File

@ -120,6 +120,9 @@ static void do_error(char *msg, bool errno_flag)
static int prog_load(char *prog)
{
struct bpf_program *pos;
const char *sec_name;
obj = bpf_object__open_file(prog, NULL);
if (libbpf_get_error(obj)) {
printf("ERROR: opening BPF object file failed\n");
@ -132,7 +135,13 @@ static int prog_load(char *prog)
goto err;
}
bpf_prog = bpf_object__find_program_by_title(obj, "cgroup_skb/egress");
bpf_object__for_each_program(pos, obj) {
sec_name = bpf_program__section_name(pos);
if (sec_name && !strcmp(sec_name, "cgroup_skb/egress")) {
bpf_prog = pos;
break;
}
}
if (!bpf_prog) {
printf("ERROR: finding a prog in obj file failed\n");
goto err;

12
samples/bpf/xdp_fwd_user.c
View File

@ -79,7 +79,9 @@ int main(int argc, char **argv)
.prog_type = BPF_PROG_TYPE_XDP,
};
const char *prog_name = "xdp_fwd";
struct bpf_program *prog;
struct bpf_program *prog = NULL;
struct bpf_program *pos;
const char *sec_name;
int prog_fd, map_fd = -1;
char filename[PATH_MAX];
struct bpf_object *obj;
@ -134,7 +136,13 @@ int main(int argc, char **argv)
return 1;
}
prog = bpf_object__find_program_by_title(obj, prog_name);
bpf_object__for_each_program(pos, obj) {
sec_name = bpf_program__section_name(pos);
if (sec_name && !strcmp(sec_name, prog_name)) {
prog = pos;
break;
}
}
prog_fd = bpf_program__fd(prog);
if (prog_fd < 0) {
printf("program not found: %s\n", strerror(prog_fd));