SO_ATTACH_BPF
case SO_ATTACH_BPF:
ret = setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &fd, sizeof(fd));
if (setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd,
assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd,
assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd,
assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &main_prog_fd,