diff options
| author | Martin KaFai Lau <kafai@fb.com> | 2021-03-25 04:52:46 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-03-27 06:41:52 +0300 |
| commit | 78e60bbbe8e8f614b6a453d8a780d9e6f77749a8 (patch) | |
| tree | b4016d6f0cee3eb8f9559e7f4ea5e8fac01b83fe /tools/testing/selftests/bpf/progs/bpf_dctcp.c | |
| parent | 39cd9e0f6783fd2dd2b0e95500e34575b3707ed8 (diff) | |
| download | linux-78e60bbbe8e8f614b6a453d8a780d9e6f77749a8.tar.xz | |
bpf: selftests: Bpf_cubic and bpf_dctcp calling kernel functions
This patch removes the bpf implementation of tcp_slow_start()
and tcp_cong_avoid_ai(). Instead, it directly uses the kernel
implementation.
It also replaces the bpf_cubic_undo_cwnd implementation by directly
calling tcp_reno_undo_cwnd(). bpf_dctcp also directly calls
tcp_reno_cong_avoid() instead.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210325015246.1551062-1-kafai@fb.com
Diffstat (limited to 'tools/testing/selftests/bpf/progs/bpf_dctcp.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/bpf_dctcp.c | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/tools/testing/selftests/bpf/progs/bpf_dctcp.c b/tools/testing/selftests/bpf/progs/bpf_dctcp.c index 4dc1a967776a..fd42247da8b4 100644 --- a/tools/testing/selftests/bpf/progs/bpf_dctcp.c +++ b/tools/testing/selftests/bpf/progs/bpf_dctcp.c @@ -194,22 +194,12 @@ __u32 BPF_PROG(dctcp_cwnd_undo, struct sock *sk) return max(tcp_sk(sk)->snd_cwnd, ca->loss_cwnd); } -SEC("struct_ops/tcp_reno_cong_avoid") -void BPF_PROG(tcp_reno_cong_avoid, struct sock *sk, __u32 ack, __u32 acked) -{ - struct tcp_sock *tp = tcp_sk(sk); - - if (!tcp_is_cwnd_limited(sk)) - return; +extern void tcp_reno_cong_avoid(struct sock *sk, __u32 ack, __u32 acked) __ksym; - /* In "safe" area, increase. */ - if (tcp_in_slow_start(tp)) { - acked = tcp_slow_start(tp, acked); - if (!acked) - return; - } - /* In dangerous area, increase slowly. */ - tcp_cong_avoid_ai(tp, tp->snd_cwnd, acked); +SEC("struct_ops/dctcp_reno_cong_avoid") +void BPF_PROG(dctcp_cong_avoid, struct sock *sk, __u32 ack, __u32 acked) +{ + tcp_reno_cong_avoid(sk, ack, acked); } SEC(".struct_ops") @@ -226,7 +216,7 @@ struct tcp_congestion_ops dctcp = { .in_ack_event = (void *)dctcp_update_alpha, .cwnd_event = (void *)dctcp_cwnd_event, .ssthresh = (void *)dctcp_ssthresh, - .cong_avoid = (void *)tcp_reno_cong_avoid, + .cong_avoid = (void *)dctcp_cong_avoid, .undo_cwnd = (void *)dctcp_cwnd_undo, .set_state = (void *)dctcp_state, .flags = TCP_CONG_NEEDS_ECN, |