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// SPDX-License-Identifier: GPL-2.0
#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
char _license[] SEC("license") = "GPL";
int ca1_cnt = 0;
int ca2_cnt = 0;
static inline struct tcp_sock *tcp_sk(const struct sock *sk)
{
return (struct tcp_sock *)sk;
}
SEC("struct_ops/ca_update_1_init")
void BPF_PROG(ca_update_1_init, struct sock *sk)
{
ca1_cnt++;
}
SEC("struct_ops/ca_update_2_init")
void BPF_PROG(ca_update_2_init, struct sock *sk)
{
ca2_cnt++;
}
SEC("struct_ops/ca_update_cong_control")
void BPF_PROG(ca_update_cong_control, struct sock *sk,
const struct rate_sample *rs)
{
}
SEC("struct_ops/ca_update_ssthresh")
__u32 BPF_PROG(ca_update_ssthresh, struct sock *sk)
{
return tcp_sk(sk)->snd_ssthresh;
}
SEC("struct_ops/ca_update_undo_cwnd")
__u32 BPF_PROG(ca_update_undo_cwnd, struct sock *sk)
{
return tcp_sk(sk)->snd_cwnd;
}
SEC(".struct_ops.link")
struct tcp_congestion_ops ca_update_1 = {
.init = (void *)ca_update_1_init,
.cong_control = (void *)ca_update_cong_control,
.ssthresh = (void *)ca_update_ssthresh,
.undo_cwnd = (void *)ca_update_undo_cwnd,
.name = "tcp_ca_update",
};
SEC(".struct_ops.link")
struct tcp_congestion_ops ca_update_2 = {
.init = (void *)ca_update_2_init,
.cong_control = (void *)ca_update_cong_control,
.ssthresh = (void *)ca_update_ssthresh,
.undo_cwnd = (void *)ca_update_undo_cwnd,
.name = "tcp_ca_update",
};
SEC(".struct_ops.link")
struct tcp_congestion_ops ca_wrong = {
.cong_control = (void *)ca_update_cong_control,
.ssthresh = (void *)ca_update_ssthresh,
.undo_cwnd = (void *)ca_update_undo_cwnd,
.name = "tcp_ca_wrong",
};
SEC(".struct_ops")
struct tcp_congestion_ops ca_no_link = {
.cong_control = (void *)ca_update_cong_control,
.ssthresh = (void *)ca_update_ssthresh,
.undo_cwnd = (void *)ca_update_undo_cwnd,
.name = "tcp_ca_no_link",
};
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