__ackvec_idx_sub  121 net/dccp/ackvec.c 	return __ackvec_idx_sub(av->av_buf_tail, av->av_buf_head);
__ackvec_idx_sub  220 net/dccp/ackvec.c 			av->av_buf_head = __ackvec_idx_sub(av->av_buf_head, 1);
__ackvec_idx_sub  232 net/dccp/ackvec.c 	av->av_buf_head = __ackvec_idx_sub(av->av_buf_head, num_packets);