mbox series

[bpf-next,v2,0/2] bpf: Allow bpf_get_netns_cookie in BPF_PROG_TYPE_CGROUP_SOCKOPT

Message ID 20210812153011.983006-1-sdf@google.com (mailing list archive)
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Series bpf: Allow bpf_get_netns_cookie in BPF_PROG_TYPE_CGROUP_SOCKOPT | expand

Message

Stanislav Fomichev Aug. 12, 2021, 3:30 p.m. UTC 
We'd like to be able to identify netns from setsockopt hooks
to be able to do the enforcement of some options only in the
"initial" netns (to give users the ability to create clear/isolated
sandboxes if needed without any enforcement by doing unshare(net)).

v2:
- add missing CONFIG_NET

Stanislav Fomichev (2):
  bpf: Allow bpf_get_netns_cookie in BPF_PROG_TYPE_CGROUP_SOCKOPT
  selftests/bpf: verify bpf_get_netns_cookie in
    BPF_PROG_TYPE_CGROUP_SOCKOPT

 kernel/bpf/cgroup.c                        | 19 ++++++++++++++++
 tools/testing/selftests/bpf/verifier/ctx.c | 25 ++++++++++++++++++++++
 2 files changed, 44 insertions(+)