75  * Fill out an ACK packet.
84 	struct rxrpc_ackpacket *ack = (struct rxrpc_ackpacket *)(whdr + 1);  in rxrpc_fill_out_ack()  local
101 	ack->bufferSpace	= 0;  in rxrpc_fill_out_ack()
102 	ack->maxSkew		= 0;  in rxrpc_fill_out_ack()
103 	ack->firstPacket	= htonl(window);  in rxrpc_fill_out_ack()
104 	ack->previousPacket	= htonl(call->rx_highest_seq);  in rxrpc_fill_out_ack()
105 	ack->serial		= htonl(serial);  in rxrpc_fill_out_ack()
106 	ack->reason		= ack_reason;  in rxrpc_fill_out_ack()
107 	ack->nAcks		= wtop - window;  in rxrpc_fill_out_ack()
116 		txb->len += ack->nAcks;  in rxrpc_fill_out_ack()
118 		txb->kvec[1].iov_len = ack->nAcks;  in rxrpc_fill_out_ack()
121 		to = min_t(unsigned int, ack->nAcks, RXRPC_SACK_SIZE);  in rxrpc_fill_out_ack()
123 		if (sack + ack->nAcks <= RXRPC_SACK_SIZE) {  in rxrpc_fill_out_ack()
124 			memcpy(sackp, call->ackr_sack_table + sack, ack->nAcks);  in rxrpc_fill_out_ack()
130 		pr_warn("ack window backward %x %x", window, wtop);  in rxrpc_fill_out_ack()
131 	} else if (ack->reason == RXRPC_ACK_DELAY) {  in rxrpc_fill_out_ack()
132 		ack->reason = RXRPC_ACK_IDLE;  in rxrpc_fill_out_ack()
176  * Transmit an ACK packet.
182 	struct rxrpc_ackpacket *ack = (struct rxrpc_ackpacket *)(whdr + 1);  in rxrpc_send_ack_packet()  local
203 			   ntohl(ack->firstPacket),  in rxrpc_send_ack_packet()
204 			   ntohl(ack->serial), ack->reason, ack->nAcks,  in rxrpc_send_ack_packet()
220 		if (ack->reason == RXRPC_ACK_PING)  in rxrpc_send_ack_packet()
230  * Queue an ACK for immediate transmission.
273 	 * hard-ACK'd all of its request data.  After that point, we're not  in rxrpc_send_abort_packet()
342 	/* If our RTT cache needs working on, request an ACK.  Also request  in rxrpc_prepare_data_subpacket()
345 	 * However, we mustn't request an ACK on the last reply packet of a  in rxrpc_prepare_data_subpacket()
346 	 * service call, lest OpenAFS incorrectly send us an ACK with some  in rxrpc_prepare_data_subpacket()
347 	 * soft-ACKs in it and then never follow up with a proper hard ACK.  in rxrpc_prepare_data_subpacket()