From 1a56c18e6c2e4e7482ac9e1a4ffe1770841dd6bd Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Wed, 2 Feb 2022 14:59:12 -0800 Subject: [PATCH] bpftool: Stop supporting BPF offload-enabled feature probing 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 Signed-off-by: Daniel Borkmann Reviewed-by: Quentin Monnet Link: https://lore.kernel.org/bpf/20220202225916.3313522-3-andrii@kernel.org --- tools/bpf/bpftool/feature.c | 29 +++++++++++++++++------------ 1 file changed, 17 insertions(+), 12 deletions(-) diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c index e999159fa28d..9c894b1447de 100644 --- a/tools/bpf/bpftool/feature.c +++ b/tools/bpf/bpftool/feature.c @@ -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