selftests/bpf: Test sys_connect BPF hooks with TFO

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TCP Fast Open is triggered by sys_sendmsg with MSG_FASTOPEN flag for
SOCK_STREAM socket.

Even though it's sys_sendmsg, it eventually calls __inet_stream_connect
the same way sys_connect does for TCP.  __inet_stream_connect, in turn,
already has BPF hooks for sys_connect.

That means TFO is already covered by BPF_CGROUP_INET{4,6}_CONNECT and
the only missing piece is selftest. The patch adds selftest for TFO.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Andrey Ignatov 2018-06-26 14:22:41 -07:00 • committed by Daniel Borkmann

parent 1e54ad251a

commit a7f7547f5e

1 changed files with 31 additions and 6 deletions

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tools/testing/selftests/bpf/test_sock_addr.c

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