> -----Original Message----- > From: Eric Dumazet <[email protected]> > Sent: Thursday, August 21, 2025 2:24 PM > To: Chia-Yu Chang (Nokia) <[email protected]> > Cc: [email protected]; [email protected]; [email protected]; > [email protected]; [email protected]; [email protected]; > [email protected]; [email protected]; [email protected]; > [email protected]; [email protected]; [email protected]; > [email protected]; [email protected]; [email protected]; > [email protected]; [email protected]; [email protected]; > [email protected]; [email protected]; [email protected]; > [email protected]; [email protected]; Koen De Schepper (Nokia) > <[email protected]>; [email protected]; > [email protected]; [email protected]; > [email protected]; [email protected]; [email protected]; > [email protected] > Subject: Re: [PATCH v15 net-next 08/14] tcp: accecn: AccECN needs to know > delivered bytes > > > CAUTION: This is an external email. Please be very careful when clicking > links or opening attachments. See the URL nok.it/ext for additional > information. > > > > On Fri, Aug 15, 2025 at 1:39 AM <[email protected]> wrote: > > > > From: Ilpo Järvinen <[email protected]> > > > > AccECN byte counter estimation requires delivered bytes which can be > > calculated while processing SACK blocks and cumulative ACK. The > > delivered bytes will be used to estimate the byte counters between > > AccECN option (on ACKs w/o the option). > > > > Non-SACK calculation is quite annoying, inaccurate, and likely bogus. > > Does it mean AccECN depends on SACK ? >
In fact, AccECN does not depend on SACK to function; however, it would be more accurate if SACK were there. In order to avoid confusion, I will remove this old comment in the next version. Chia-Yu
