ldc_alloc_exp_dring
void *ldc_alloc_exp_dring(struct ldc_channel *lp, unsigned int len,
EXPORT_SYMBOL(ldc_alloc_exp_dring);
dring = ldc_alloc_exp_dring(port->vio.lp, len,
dring = ldc_alloc_exp_dring(port->vio.lp, len,