FBNIC_QUEUE_STRIDE
.reg_offset = FBNIC_QUEUE_STRIDE, \
(0x40000 + FBNIC_QUEUE_STRIDE * (n)) /* 0x100000 + 4096*n */
hw_idx /= FBNIC_QUEUE_STRIDE;
hw_idx /= FBNIC_QUEUE_STRIDE;
csr_base &= ~(FBNIC_QUEUE_STRIDE * sizeof(u32) - 1);