RING_F_QOS
f = &interface->ring_feature[RING_F_QOS];
u16 pc_stride = interface->ring_feature[RING_F_QOS].mask + 1;
dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask);
dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask);
dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask);
dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask);