From: Mahe Tardy <mahe.tardy@gmail.com>
To: bpf@vger.kernel.org
Cc: martin.lau@linux.dev, daniel@iogearbox.net,
john.fastabend@gmail.com, ast@kernel.org, andrii@kernel.org,
Mahe Tardy <mahe.tardy@gmail.com>
Subject: [PATCH bpf-next 1/2] bpf: add get_netns_cookie helper to cgroup_skb programs
Date: Tue, 25 Feb 2025 12:50:30 +0000 [thread overview]
Message-ID: <20250225125031.258740-1-mahe.tardy@gmail.com> (raw)
This is needed in the context of Cilium and Tetragon to retrieve netns
cookie from hostns when traffic leaves Pod, so that we can correlate
skb->sk's netns cookie.
Signed-off-by: Mahe Tardy <mahe.tardy@gmail.com>
---
net/core/filter.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/core/filter.c b/net/core/filter.c
index 2ec162dd83c4..827108c6dad9 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -8075,6 +8075,8 @@ sk_filter_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
return &bpf_skb_load_bytes_relative_proto;
case BPF_FUNC_get_socket_cookie:
return &bpf_get_socket_cookie_proto;
+ case BPF_FUNC_get_netns_cookie:
+ return &bpf_get_netns_cookie_proto;
case BPF_FUNC_get_socket_uid:
return &bpf_get_socket_uid_proto;
case BPF_FUNC_perf_event_output:
--
2.34.1
next reply other threads:[~2025-02-25 12:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-25 12:50 Mahe Tardy [this message]
2025-02-25 12:50 ` [PATCH bpf-next 2/2] selftests/bpf: add cgroup_skb netns cookie tests Mahe Tardy
2025-02-26 15:40 ` [PATCH bpf-next 1/2] bpf: add get_netns_cookie helper to cgroup_skb programs patchwork-bot+netdevbpf
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