From: Jason Xing <kerneljasonxing@xxxxxxxxx>
Date: Mon, 17 Feb 2025 11:42:44 +0800
> Some applications don't want to wait for too long because the
> time of retransmission increases exponentially and can reach more
> than 10 seconds, for example. Eric implements the core logic
> on supporting rto max feature in the stack previously. Based on that,
> we can support it for BPF use.
>
> This patch reuses the same logic of TCP_RTO_MAX_MS in do_tcp_setsockopt()
> and do_tcp_getsockopt(). BPF program can call bpf_{set/get}sockopt()
> to set/get the maximum value of RTO.
>
> It would be good if a BPF program sets max value of RTO before
> transmission as we can see in the later patch (selftests).
>
> Signed-off-by: Jason Xing <kerneljasonxing@xxxxxxxxx>
Reviewed-by: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
