netdev - [PATCH v1 bpf-next/net 4/8] bpftool: Support BPF_CGROUP_INET_SOCK

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Message-ID: <20250822221846.744252-5-kuniyu@google.com>
Date: Fri, 22 Aug 2025 22:17:59 +0000
From: Kuniyuki Iwashima <kuniyu@...gle.com>
To: Alexei Starovoitov <ast@...nel.org>, Andrii Nakryiko <andrii@...nel.org>, 
	Daniel Borkmann <daniel@...earbox.net>, Martin KaFai Lau <martin.lau@...ux.dev>
Cc: John Fastabend <john.fastabend@...il.com>, Stanislav Fomichev <sdf@...ichev.me>, 
	Johannes Weiner <hannes@...xchg.org>, Michal Hocko <mhocko@...nel.org>, 
	Roman Gushchin <roman.gushchin@...ux.dev>, Shakeel Butt <shakeel.butt@...ux.dev>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Neal Cardwell <ncardwell@...gle.com>, Willem de Bruijn <willemb@...gle.com>, 
	Mina Almasry <almasrymina@...gle.com>, Kuniyuki Iwashima <kuniyu@...gle.com>, 
	Kuniyuki Iwashima <kuni1840@...il.com>, bpf@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH v1 bpf-next/net 4/8] bpftool: Support BPF_CGROUP_INET_SOCK_ACCEPT.

Let's support the new attach_type for cgroup prog to
hook in __inet_accept().

Now we can specify BPF_CGROUP_INET_SOCK_ACCEPT as
cgroup_inet_sock_accept:

  # bpftool cgroup attach /sys/fs/cgroup/test \
      cgroup_inet_sock_accept pinned /sys/fs/bpf/sk_memcg_accept

Signed-off-by: Kuniyuki Iwashima <kuniyu@...gle.com>
---
 tools/bpf/bpftool/cgroup.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/bpf/bpftool/cgroup.c b/tools/bpf/bpftool/cgroup.c
index 944ebe21a216..593dabcf1578 100644
--- a/tools/bpf/bpftool/cgroup.c
+++ b/tools/bpf/bpftool/cgroup.c
@@ -48,7 +48,8 @@ static const int cgroup_attach_types[] = {
 	BPF_CGROUP_SYSCTL,
 	BPF_CGROUP_GETSOCKOPT,
 	BPF_CGROUP_SETSOCKOPT,
-	BPF_LSM_CGROUP
+	BPF_LSM_CGROUP,
+	BPF_CGROUP_INET_SOCK_ACCEPT,
 };
 
 #define HELP_SPEC_ATTACH_FLAGS						\
@@ -68,7 +69,8 @@ static const int cgroup_attach_types[] = {
 	"                        cgroup_unix_sendmsg | cgroup_udp4_recvmsg |\n" \
 	"                        cgroup_udp6_recvmsg | cgroup_unix_recvmsg |\n" \
 	"                        cgroup_sysctl | cgroup_getsockopt |\n" \
-	"                        cgroup_setsockopt | cgroup_inet_sock_release }"
+	"                        cgroup_setsockopt | cgroup_inet_sock_release |\n" \
+	"                        cgroup_inet_sock_accept }"
 
 static unsigned int query_flags;
 static struct btf *btf_vmlinux;
-- 
2.51.0.rc2.233.g662b1ed5c5-goog