+/** tfrc_tx_info - TFRC Sender Data Structure
+ *
+ * @tfrctx_x: computed transmit rate (4.3 (4))
+ * @tfrctx_x_recv: receiver estimate of send rate (4.3)
+ * @tfrctx_x_calc: return value of throughput equation (3.1)
+ * @tfrctx_rtt: (moving average) estimate of RTT (4.3)
+ * @tfrctx_p: current loss event rate (5.4)
+ * @tfrctx_rto: estimate of RTO, equals 4*RTT (4.3)
+ * @tfrctx_ipi: inter-packet interval (4.6)
+ *
+ * Note: X and X_recv are both maintained in units of 64 * bytes/second. This
+ * enables a finer resolution of sending rates and avoids problems with
+ * integer arithmetic; u32 is not sufficient as scaling consumes 6 bits.
+ */