// SPDX-License-Identifier: GPL-2.0 #include "vmlinux.h" #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> char _license[] SEC("license") = "GPL"; SEC("struct_ops") size_t BPF_PROG(unsupp_cong_op_get_info, struct sock *sk, u32 ext, int *attr, union tcp_cc_info *info) { return 0; } SEC(".struct_ops") struct tcp_congestion_ops unsupp_cong_op = { .get_info = (void *)unsupp_cong_op_get_info, .name = "bpf_unsupp_op", };