79  * Fill out an ACK packet.
101 	txb->ack.firstPacket = htonl(window);  in rxrpc_fill_out_ack()
102 	txb->ack.nAcks = wtop - window;  in rxrpc_fill_out_ack()
106 		to = min_t(unsigned int, txb->ack.nAcks, RXRPC_SACK_SIZE);  in rxrpc_fill_out_ack()
108 		if (sack + txb->ack.nAcks <= RXRPC_SACK_SIZE) {  in rxrpc_fill_out_ack()
109 			memcpy(txb->acks, call->ackr_sack_table + sack, txb->ack.nAcks);  in rxrpc_fill_out_ack()
118 		pr_warn("ack window backward %x %x", window, wtop);  in rxrpc_fill_out_ack()
119 	} else if (txb->ack.reason == RXRPC_ACK_DELAY) {  in rxrpc_fill_out_ack()
120 		txb->ack.reason = RXRPC_ACK_IDLE;  in rxrpc_fill_out_ack()
138 	return txb->ack.nAcks + 3 + sizeof(trailer);  in rxrpc_fill_out_ack()
185  * Transmit an ACK packet.
208 	if (txb->ack.reason == RXRPC_ACK_PING)  in rxrpc_send_ack_packet()
216 	iov[0].iov_len	= sizeof(txb->wire) + sizeof(txb->ack) + n;  in rxrpc_send_ack_packet()
222 			   ntohl(txb->ack.firstPacket),  in rxrpc_send_ack_packet()
223 			   ntohl(txb->ack.serial), txb->ack.reason, txb->ack.nAcks,  in rxrpc_send_ack_packet()
226 	if (txb->ack.reason == RXRPC_ACK_PING)  in rxrpc_send_ack_packet()
232 	txb->ack.previousPacket	= htonl(call->rx_highest_seq);  in rxrpc_send_ack_packet()
270 	 * hard-ACK'd all of its request data.  After that point, we're not  in rxrpc_send_abort_packet()
355 	/* If our RTT cache needs working on, request an ACK.  Also request  in rxrpc_send_data_packet()
358 	 * However, we mustn't request an ACK on the last reply packet of a  in rxrpc_send_data_packet()
359 	 * service call, lest OpenAFS incorrectly send us an ACK with some  in rxrpc_send_data_packet()
360 	 * soft-ACKs in it and then never follow up with a proper hard ACK.  in rxrpc_send_data_packet()
404 	 * yet.  However, this can race as we can receive an ACK before we get  in rxrpc_send_data_packet()
405 	 * to this point.  But, OTOH, if we won't get an ACK mentioning this  in rxrpc_send_data_packet()