chan_rate
nic_rate[0] = chan_rate(adap, TNLRATE0_G(v));
nic_rate[1] = chan_rate(adap, TNLRATE1_G(v));
nic_rate[2] = chan_rate(adap, TNLRATE2_G(v));
nic_rate[3] = chan_rate(adap, TNLRATE3_G(v));
ofld_rate[0] = chan_rate(adap, OFDRATE0_G(v));
ofld_rate[1] = chan_rate(adap, OFDRATE1_G(v));
ofld_rate[2] = chan_rate(adap, OFDRATE2_G(v));
ofld_rate[3] = chan_rate(adap, OFDRATE3_G(v));