Re: [PATCH v9 net-next 08/15] tcp: add TCP_SYNACK_RETRANS synack_type

On Mon, Jan 19, 2026 at 7:59 PM [off-list ref] wrote:

From: Chia-Yu Chang <redacted>

Before this patch, retransmitted SYN/ACK did not have a specific synack_type;
however, the upcoming patch needs to distinguish between retransmitted and
non-retransmitted SYN/ACK for AccECN negotiation to transmit the fallback
SYN/ACK during AccECN negotiation. Therefore, this patch introduces a new
synack_type (TCP_SYNACK_RETRANS).

Signed-off-by: Chia-Yu Chang <redacted>
Acked-by: Paolo Abeni <pabeni@redhat.com>

Reviewed-by: Eric Dumazet <edumazet@google.com>