83 		/* We analyse the number of packets that get ACK'd per RTT  in rxrpc_congestion_management()
176 	/* Send some previously unsent DATA if we have some to advance the ACK  in rxrpc_congestion_management()
215  * Apply a hard ACK by advancing the Tx window.
259  * or a final ACK packet.
429 		/* Send an immediate ACK if we fill in a hole */  in rxrpc_input_data_one()
692  * Process the extra information that may be appended to an ACK packet
727  * Determine how many nacks from the previous ACK have now been satisfied.
736 	rxrpc_seq_t old_seq = sp->ack.first_ack;  in rxrpc_input_check_prev_ack()
739 	if (after_eq(seq, old_seq + sp->ack.nr_acks)) {  in rxrpc_input_check_prev_ack()
740 		summary->nr_new_acks += sp->ack.nr_nacks;  in rxrpc_input_check_prev_ack()
741 		summary->nr_new_acks += seq - (old_seq + sp->ack.nr_acks);  in rxrpc_input_check_prev_ack()
744 		summary->nr_retained_nacks = sp->ack.nr_nacks;  in rxrpc_input_check_prev_ack()
746 		for (i = 0; i < sp->ack.nr_acks; i++) {  in rxrpc_input_check_prev_ack()
759 	return old_seq + sp->ack.nr_acks;  in rxrpc_input_check_prev_ack()
765  * Each ACK in the array corresponds to one packet and can be either an ACK or
767  * packets that lie beyond the end of the ACK list are scheduled for resend by
769  * the time the ACK was sent.
779 	rxrpc_seq_t lowest_nak = seq + sp->ack.nr_acks;  in rxrpc_input_soft_acks()
782 	for (i = 0; i < sp->ack.nr_acks; i++) {  in rxrpc_input_soft_acks()
790 				/* Overlap with previous ACK */  in rxrpc_input_soft_acks()
794 				sp->ack.nr_nacks++;  in rxrpc_input_soft_acks()
819  * Return true if the ACK is valid - ie. it doesn't appear to have regressed
820  * with respect to the ack state conveyed by preceding ACKs.
843  * Process an ACK packet.
845  * ack.firstPacket is the sequence number of the first soft-ACK'd/NAK'd packet
846  * in the ACK array.  Anything before that is hard-ACK'd and may be discarded.
848  * A hard-ACK means that a packet has been processed and may be discarded; a
849  * soft-ACK means that the packet may be discarded and retransmission
850  * requested.  A phase is complete when all packets are hard-ACK'd.
866 	acked_serial	= sp->ack.acked_serial;  in rxrpc_input_ack()
867 	first_soft_ack	= sp->ack.first_ack;  in rxrpc_input_ack()
868 	prev_pkt	= sp->ack.prev_ack;  in rxrpc_input_ack()
869 	nr_acks		= sp->ack.nr_acks;  in rxrpc_input_ack()
871 	summary.ack_reason = (sp->ack.reason < RXRPC_ACK__INVALID ?  in rxrpc_input_ack()
872 			      sp->ack.reason : RXRPC_ACK__INVALID);  in rxrpc_input_ack()
896 	/* If we get an EXCEEDS_WINDOW ACK from the server, it probably  in rxrpc_input_ack()
909 	/* If we get an OUT_OF_SEQUENCE ACK from the server, that can also  in rxrpc_input_ack()