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bpf: add get_netns_cookie helper to tracing programs #8572

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Pull request for series with
subject: bpf: add get_netns_cookie helper to tracing programs
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641

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Upstream branch: 0b93631
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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Upstream branch: 53415f6
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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Upstream branch: 17a82ed
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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Upstream branch: d38ad24
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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Upstream branch: 0bf6c8a
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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Upstream branch: a36a835
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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Upstream branch: 122f1fd
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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Upstream branch: 7586e21
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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Upstream branch: 7586e21
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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Upstream branch: 7586e21
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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Upstream branch: ad55432
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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Upstream branch: ad55432
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

mtardy added 2 commits March 3, 2025 21:13
@mtardy
bpf: add get_netns_cookie helper to tracing programs
c5c1256 
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>
@mtardy
selftests/bpf: add tracing netns cookie tests
0b08a27 
Add netns cookie test that verifies the helper is now supported and work
in the context of tracing programs.

Signed-off-by: Mahe Tardy <mahe.tardy@gmail.com>
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Upstream branch: c6287f1
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=938641
version: 1

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