netdev - [PATCH RESEND bpf] libbpf: fix probe for BPF_PROG_TYPE_CGROUP

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Date:   Thu, 29 Jul 2021 00:58:25 +0200
From:   "Robin Gögge" <r.goegge@...glemail.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>
Cc:     Stanislav Fomichev <sdf@...gle.com>, netdev@...r.kernel.org,
        bpf@...r.kernel.org,
        Robin Gögge <r.goegge@...il.com>,
        Quentin Monnet <quentin@...valent.com>
Subject: [PATCH RESEND bpf] libbpf: fix probe for BPF_PROG_TYPE_CGROUP_SOCKOPT

This patch fixes the probe for BPF_PROG_TYPE_CGROUP_SOCKOPT,
so the probe reports accurate results when used by e.g.
bpftool.

Fixes: 4cdbfb59c44a ("libbpf: support sockopt hooks")

Signed-off-by: Robin Gögge <r.goegge@...il.com>
Reviewed-by: Quentin Monnet <quentin@...valent.com>
---
 tools/lib/bpf/libbpf_probes.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/lib/bpf/libbpf_probes.c b/tools/lib/bpf/libbpf_probes.c
index ecaae2927ab8..cd8c703dde71 100644
--- a/tools/lib/bpf/libbpf_probes.c
+++ b/tools/lib/bpf/libbpf_probes.c
@@ -75,6 +75,9 @@ probe_load(enum bpf_prog_type prog_type, const struct bpf_insn *insns,
 	case BPF_PROG_TYPE_CGROUP_SOCK_ADDR:
 		xattr.expected_attach_type = BPF_CGROUP_INET4_CONNECT;
 		break;
+	case BPF_PROG_TYPE_CGROUP_SOCKOPT:
+		xattr.expected_attach_type = BPF_CGROUP_GETSOCKOPT;
+		break;
 	case BPF_PROG_TYPE_SK_LOOKUP:
 		xattr.expected_attach_type = BPF_SK_LOOKUP;
 		break;
@@ -104,7 +107,6 @@ probe_load(enum bpf_prog_type prog_type, const struct bpf_insn *insns,
 	case BPF_PROG_TYPE_SK_REUSEPORT:
 	case BPF_PROG_TYPE_FLOW_DISSECTOR:
 	case BPF_PROG_TYPE_CGROUP_SYSCTL:
-	case BPF_PROG_TYPE_CGROUP_SOCKOPT:
 	case BPF_PROG_TYPE_TRACING:
 	case BPF_PROG_TYPE_STRUCT_OPS:
 	case BPF_PROG_TYPE_EXT:
-- 
2.25.1