On Fri, Aug 15, 2025 at 1:39 AM <chia-yu.chang@xxxxxxxxxxxxxxxxxxx> wrote: > > From: Ilpo Järvinen <ij@xxxxxxxxxx> > > These three byte counters track IP ECN field payload byte sums for > all arriving (acceptable) packets for ECT0, ECT1, and CE. The > AccECN option (added by a later patch in the series) echoes these > counters back to sender side; therefore, it is placed within the > group of tcp_sock_write_txrx. > > Below are the pahole outcomes before and after this patch, in which > the group size of tcp_sock_write_txrx is increased from 95 + 4 to > 107 + 4 and an extra 4-byte hole is created but will be exploited > in later patches: > > > Signed-off-by: Ilpo Järvinen <ij@xxxxxxxxxx> > Signed-off-by: Neal Cardwell <ncardwell@xxxxxxxxxx> > Co-developed-by: Chia-Yu Chang <chia-yu.chang@xxxxxxxxxxxxxxxxxxx> > Signed-off-by: Chia-Yu Chang <chia-yu.chang@xxxxxxxxxxxxxxxxxxx> > Reviewed-by: Eric Dumazet <edumazet@xxxxxxxxxx>
