1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2021 Facebook */
3
4 #include "bpf_tracing_net.h"
5 #include <bpf/bpf_helpers.h>
6 #include <bpf/bpf_tracing.h>
7
8 char _license[] SEC("license") = "GPL";
9 const char cubic[] = "cubic";
10
11 SEC("struct_ops")
12 void BPF_PROG(dctcp_nouse_release, struct sock *sk)
13 {
14 bpf_setsockopt(sk, SOL_TCP, TCP_CONGESTION,
15 (void *)cubic, sizeof(cubic));
16 }
17
18 SEC(".struct_ops")
19 struct tcp_congestion_ops dctcp_rel = {
20 .release = (void *)dctcp_nouse_release,
21 .name = "bpf_dctcp_rel",
22 };
23
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