Re: [PATCH bpf-next 2/4] libbpf: add support for BPF_CGROUP_INET_SOCK_RELEASE

On Fri, Jun 26, 2020 at 3:02 PM Andrii Nakryiko
[off-list ref] wrote:

On Thu, Jun 25, 2020 at 5:13 PM Stanislav Fomichev [off-list ref] wrote:

quoted

Add auto-detection for the cgroup/sock_release programs.

Signed-off-by: Stanislav Fomichev <redacted>
---

Acked-by: Andrii Nakryiko <redacted>

quoted

 tools/include/uapi/linux/bpf.h | 1 +
 tools/lib/bpf/libbpf.c         | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index c65b374a5090..d7aea1d0167a 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h

@@ -226,6 +226,7 @@ enum bpf_attach_type {
        BPF_CGROUP_INET4_GETSOCKNAME,
        BPF_CGROUP_INET6_GETSOCKNAME,
        BPF_XDP_DEVMAP,
+       BPF_CGROUP_INET_SOCK_RELEASE,
        __MAX_BPF_ATTACH_TYPE
 };

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 7f01be2b88b8..acbab6d0672d 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c

@@ -6670,6 +6670,8 @@ static const struct bpf_sec_def section_defs[] = {
        BPF_APROG_SEC("cgroup_skb/egress",      BPF_PROG_TYPE_CGROUP_SKB,
                                                BPF_CGROUP_INET_EGRESS),
        BPF_APROG_COMPAT("cgroup/skb",          BPF_PROG_TYPE_CGROUP_SKB),
+       BPF_EAPROG_SEC("cgroup/sock_release",   BPF_PROG_TYPE_CGROUP_SOCK,
+                                               BPF_CGROUP_INET_SOCK_RELEASE),
        BPF_APROG_SEC("cgroup/sock",            BPF_PROG_TYPE_CGROUP_SOCK,

might want to add another alias to match _release: "cgroup/sock_create"?

Sure, will do!