mirror of https://gitee.com/openkylin/linux.git
libbpf: Support guessing post_bind{4,6} progs
libbpf can guess prog type and expected attach type based on section name. Add hints for "cgroup/post_bind4" and "cgroup/post_bind6" section names. Existing "cgroup/sock" is not changed, i.e. expected_attach_type for it is not set to `BPF_CGROUP_INET_SOCK_CREATE`, for backward compatibility. Signed-off-by: Andrey Ignatov <rdna@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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@ -1859,6 +1859,9 @@ static void bpf_program__set_expected_attach_type(struct bpf_program *prog,
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#define BPF_PROG_SEC(string, ptype) BPF_PROG_SEC_FULL(string, ptype, 0)
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#define BPF_S_PROG_SEC(string, ptype) \
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BPF_PROG_SEC_FULL(string, BPF_PROG_TYPE_CGROUP_SOCK, ptype)
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#define BPF_SA_PROG_SEC(string, ptype) \
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BPF_PROG_SEC_FULL(string, BPF_PROG_TYPE_CGROUP_SOCK_ADDR, ptype)
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@ -1889,10 +1892,13 @@ static const struct {
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BPF_SA_PROG_SEC("cgroup/bind6", BPF_CGROUP_INET6_BIND),
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BPF_SA_PROG_SEC("cgroup/connect4", BPF_CGROUP_INET4_CONNECT),
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BPF_SA_PROG_SEC("cgroup/connect6", BPF_CGROUP_INET6_CONNECT),
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BPF_S_PROG_SEC("cgroup/post_bind4", BPF_CGROUP_INET4_POST_BIND),
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BPF_S_PROG_SEC("cgroup/post_bind6", BPF_CGROUP_INET6_POST_BIND),
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};
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#undef BPF_PROG_SEC
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#undef BPF_PROG_SEC_FULL
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#undef BPF_S_PROG_SEC
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#undef BPF_SA_PROG_SEC
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static int bpf_program__identify_section(struct bpf_program *prog)
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