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Code Issues Releases Wiki Activity

bpftool: Stop supporting BPF offload-enabled feature probing

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libbpf 1.0 is not going to support passing ifindex to BPF
prog/map/helper feature probing APIs. Remove the support for BPF offload
feature probing.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20220202225916.3313522-3-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2022-02-02 14:59:12 -08:00 committed by Daniel Borkmann
parent a5dd9589f0
commit 1a56c18e6c
1 changed files with 17 additions and 12 deletions
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29
tools/bpf/bpftool/feature.c
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@ -487,17 +487,12 @@ probe_prog_type(enum bpf_prog_type prog_type, bool *supported_types,
size_t maxlen;
bool res;
if (ifindex)
/* Only test offload-able program types */
switch (prog_type) {
case BPF_PROG_TYPE_SCHED_CLS:
case BPF_PROG_TYPE_XDP:
break;
default:
return;
}
if (ifindex) {
p_info("BPF offload feature probing is not supported");
return;
}
res = bpf_probe_prog_type(prog_type, ifindex);
res = libbpf_probe_bpf_prog_type(prog_type, NULL);
#ifdef USE_LIBCAP
/* Probe may succeed even if program load fails, for unprivileged users
* check that we did not fail because of insufficient permissions
@ -535,7 +530,12 @@ probe_map_type(enum bpf_map_type map_type, const char *define_prefix,
size_t maxlen;
bool res;
res = bpf_probe_map_type(map_type, ifindex);
if (ifindex) {
p_info("BPF offload feature probing is not supported");
return;
}
res = libbpf_probe_bpf_map_type(map_type, NULL);
/* Probe result depends on the success of map creation, no additional
* check required for unprivileged users
@ -567,7 +567,12 @@ probe_helper_for_progtype(enum bpf_prog_type prog_type, bool supported_type,
bool res = false;
if (supported_type) {
res = bpf_probe_helper(id, prog_type, ifindex);
if (ifindex) {
p_info("BPF offload feature probing is not supported");
return;
}
res = libbpf_probe_bpf_helper(prog_type, id, NULL);
#ifdef USE_LIBCAP
/* Probe may succeed even if program load fails, for
* unprivileged users check that we did not fail because of