Documentation/bpf/prog_cgroup_sockopt.rst

7 ``BPF_PROG_TYPE_CGROUP_SOCKOPT`` program type can be attached to two
26 If BPF program sets ``optlen`` to -1, the control will be returned
38 * ``1`` - success, continue with next BPF program in the cgroup chain.
62   the BPF program from the parent cgroup).
76 the programs are executed from the bottom up: B, A. First program
79 control will be passed to the second (A) program which will see the
82 Same for ``BPF_CGROUP_SETSOCKOPT``: if the program is attached to
85 then the next program in the chain (A) will see those changes,
91 When the ``optval`` is greater than the ``PAGE_SIZE``, the BPF program
96   done by the BPF program to the ``optval`` are ignored.
100 When the BPF program returns with the ``optlen`` greater than
102 buffers without any modifications that the BPF program might have
162 of BPF program that handles socket options.