Got you means! LGTM I will make a patch later and make a try On Mon, Aug 7, 2023, at 9:25 PM, Eric Dumazet wrote: > On Mon, Aug 7, 2023 at 2:49 PM Manjusaka <me@xxxxxxxxxxxx> wrote: > > > > > Do not include code before variable declarations. > > Sorry about that. I will update the code later. > > > > > I would rather add a trace in tcp_ca_event(), this would be more generic ? > > > > https://elixir.bootlin.com/linux/latest/source/net/ipv4/tcp_cong.c#L41 > > > > I think maybe we already have the tcp_ca_event but named tcp_cong_state_set? > > I am speaking of tcp_ca_event()... > > For instance, tcp_cwnd_restart() calls tcp_ca_event(sk, CA_EVENT_CWND_RESTART); > > tcp_set_ca_state() can only set icsk_ca_state to one value from enum > tcp_ca_state: > TCP_CA_Open, TCP_CA_Disorder, TCP_CA_CWR, TCP_CA_Recovery, TCP_CA_Loss > > enum tcp_ca_event has instead: > CA_EVENT_TX_START, CA_EVENT_CWND_RESTART, CA_EVENT_COMPLETE_CWR, > CA_EVENT_LOSS, CA_EVENT_ECN_NO_CE, CA_EVENT_ECN_IS_CE >