79 	 * Ensure that Ack Ratio does not exceed ceil(cwnd/2), which is (2) from  in ccid2_change_l_ack_ratio()
80 	 * RFC 4341, 6.1.2. We ignore the statement that Ack Ratio 2 is always  in ccid2_change_l_ack_ratio()
82 	 * The same problem arises when Ack Ratio is 0 (ie. Ack Ratio disabled).  in ccid2_change_l_ack_ratio()
85 		DCCP_WARN("Limiting Ack Ratio (%u) to %u\n", val, max_ratio);  in ccid2_change_l_ack_ratio()
98 	 * need to check that the ack ratio is still less than the congestion  in ccid2_check_l_ack_ratio()
100 	 * packets and got no response because we haven't sent ack ratio  in ccid2_check_l_ack_ratio()
102 	 * If the ack ratio does need to be reduced, we reduce it to half of  in ccid2_check_l_ack_ratio()
104 	 * congestion window. This prevents problems if one ack is lost.  in ccid2_check_l_ack_ratio()
160 	/* clear ack ratio state. */  in ccid2_hc_tx_rto_expire()
295 	 *  of data with no lost or marked Ack packets. If arsent were the # of  in ccid2_hc_tx_packet_sent()
296 	 *  consecutive Acks received without loss, then Ack Ratio needs to be  in ccid2_hc_tx_packet_sent()
307 	/* Ack Ratio.  Need to maintain a concept of how many windows we sent */  in ccid2_hc_tx_packet_sent()
309 	/* We had an ack loss in this window... */  in ccid2_hc_tx_packet_sent()
317 		/* decrease ack ratio if enough packets were sent */  in ccid2_hc_tx_packet_sent()
330 			/* we can't increase ack ratio further [1] */  in ccid2_hc_tx_packet_sent()
456 	 * Adjust the local sequence window and the ack ratio to allow about  in ccid2_new_ack()
471 	 * entry in the Ack Vector), instead of once per Ack (as in TCP SACK).  in ccid2_new_ack()
473 	 * in the Ack Vector have earlier sending times.  in ccid2_new_ack()
547 				 * FIXME: Ack Congestion Control is broken; in  in ccid2_hc_tx_packet_recv()
549 				 * Ack Ratios greater than 1; causing hang-ups  in ccid2_hc_tx_packet_recv()
581 	 * In slow-start, cwnd can increase up to a maximum of Ack Ratio/2  in ccid2_hc_tx_packet_recv()
583 	 * advanced when Ack Ratio is 1 and gives a slight edge otherwise.  in ccid2_hc_tx_packet_recv()
588 	/* go through all ack vectors */  in ccid2_hc_tx_packet_recv()
590 		/* go through this ack vector */  in ccid2_hc_tx_packet_recv()
630 					ccid2_pr_debug("Got ack for %llu\n",  in ccid2_hc_tx_packet_recv()
685 				 * one ack vector.  in ccid2_hc_tx_packet_recv()
731 	/* Make sure that Ack Ratio is enabled and within bounds. */  in ccid2_hc_tx_init()