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authorLawrence Brakmo <brakmo@fb.com>2018-01-25 16:14:15 -0800
committerAlexei Starovoitov <ast@kernel.org>2018-01-25 16:41:15 -0800
commitd44874910a26f3a8f81edf873a2473363f07f660 (patch)
tree97438bbc5e9bf77f0cf2bd7f4d8f6eb8f651c605 /tools/testing/selftests/bpf/test_tcpbpf.h
parentbpf: Add BPF_SOCK_OPS_RETRANS_CB (diff)
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bpf: Add BPF_SOCK_OPS_STATE_CB
Adds support for calling sock_ops BPF program when there is a TCP state change. Two arguments are used; one for the old state and another for the new state. There is a new enum in include/uapi/linux/bpf.h that exports the TCP states that prepends BPF_ to the current TCP state names. If it is ever necessary to change the internal TCP state values (other than adding more to the end), then it will become necessary to convert from the internal TCP state value to the BPF value before calling the BPF sock_ops function. There are a set of compile checks added in tcp.c to detect if the internal and BPF values differ so we can make the necessary fixes. New op: BPF_SOCK_OPS_STATE_CB. Signed-off-by: Lawrence Brakmo <brakmo@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/test_tcpbpf.h')
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