We'd like to be able to identify netns from sk_msg hooks
to accelerate local process communication form different netns.

Xu Liu (2):
  bpf: Allow bpf_get_netns_cookie in BPF_PROG_TYPE_SK_MSG
  selftests/bpf: Test for get_netns_cookie

 net/core/filter.c                             | 14 +++++
 .../selftests/bpf/prog_tests/netns_cookie.c   | 57 ++++++++++++-------
 .../selftests/bpf/progs/netns_cookie_prog.c   | 55 ++++++++++++++++--
 3 files changed, 102 insertions(+), 24 deletions(-)

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2.28.0