diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/tcp_ca_write_sk_pacing.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/tcp_ca_write_sk_pacing.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/progs/tcp_ca_write_sk_pacing.c b/tools/testing/selftests/bpf/progs/tcp_ca_write_sk_pacing.c index 43447704cf0e..0724a79cec78 100644 --- a/tools/testing/selftests/bpf/progs/tcp_ca_write_sk_pacing.c +++ b/tools/testing/selftests/bpf/progs/tcp_ca_write_sk_pacing.c @@ -16,6 +16,16 @@ static inline struct tcp_sock *tcp_sk(const struct sock *sk) return (struct tcp_sock *)sk; } +static inline unsigned int tcp_left_out(const struct tcp_sock *tp) +{ + return tp->sacked_out + tp->lost_out; +} + +static inline unsigned int tcp_packets_in_flight(const struct tcp_sock *tp) +{ + return tp->packets_out - tcp_left_out(tp) + tp->retrans_out; +} + SEC("struct_ops/write_sk_pacing_init") void BPF_PROG(write_sk_pacing_init, struct sock *sk) { @@ -31,11 +41,12 @@ SEC("struct_ops/write_sk_pacing_cong_control") void BPF_PROG(write_sk_pacing_cong_control, struct sock *sk, const struct rate_sample *rs) { - const struct tcp_sock *tp = tcp_sk(sk); + struct tcp_sock *tp = tcp_sk(sk); unsigned long rate = ((tp->snd_cwnd * tp->mss_cache * USEC_PER_SEC) << 3) / (tp->srtt_us ?: 1U << 3); sk->sk_pacing_rate = min(rate, sk->sk_max_pacing_rate); + tp->app_limited = (tp->delivered + tcp_packets_in_flight(tp)) ?: 1; } SEC("struct_ops/write_sk_pacing_ssthresh") |