On Fri, Jun 26, 2020 at 10:56 AM Martin KaFai Lau <kafai@xxxxxx> wrote: > > This change is mostly from an internal patch and adapts it from sysctl > config to the bpf_setsockopt setup. > > The bpf_prog can set the max delay ack by using > bpf_setsockopt(TCP_BPF_DELACK_MAX). This max delay ack can be communicated > to its peer through bpf header option. The receiving peer can then use > this max delay ack and set a potentially lower rto by using > bpf_setsockopt(TCP_BPF_RTO_MIN). A latter patch will use it > like this in a test as an example. > > Signed-off-by: Martin KaFai Lau <kafai@xxxxxx> > --- Reviewed-by: Eric Dumazet <edumazet@xxxxxxxxxx> This could be split in two patches, but no big deal.