On 10/30/25 3:34 PM, [email protected] wrote: > From: Ilpo Järvinen <[email protected]> > > Add newly acked pkts EWMA. When ACK thinning occurs, select > between safer and unsafe cep delta in AccECN processing based > on it. If the packets ACKed per ACK tends to be large, don't > conservatively assume ACE field overflow. > > This patch uses the existing 2-byte holes in the rx group for new > u16 variables withtout creating more holes. Below are the pahole > outcomes before and after this patch: > > [BEFORE THIS PATCH] > struct tcp_sock { > [...] > u32 delivered_ecn_bytes[3]; /* 2744 12 */ > /* XXX 4 bytes hole, try to pack */ > > [...] > __cacheline_group_end__tcp_sock_write_rx[0]; /* 2816 0 */ > > [...] > /* size: 3264, cachelines: 51, members: 177 */ > } > > [AFTER THIS PATCH] > struct tcp_sock { > [...] > u32 delivered_ecn_bytes[3]; /* 2744 12 */ > u16 pkts_acked_ewma; /* 2756 2 */ > /* XXX 2 bytes hole, try to pack */ > > [...] > __cacheline_group_end__tcp_sock_write_rx[0]; /* 2816 0 */ > > [...] > /* size: 3264, cachelines: 51, members: 178 */ > } > > Signed-off-by: Ilpo Järvinen <[email protected]> > Co-developed-by: Chia-Yu Chang <[email protected]> > Signed-off-by: Chia-Yu Chang <[email protected]>
Acked-by: Paolo Abeni <[email protected]>
