MetaROUTERhypercallAPI

int vm_create_queue(unsigned id, unsigned irq, unsigned tx, unsigned rx);

id: queue id

irq: interrupt id

tx: pointer to guest-to-host instance of "struct vdma_descr"

rx: pointer to host-to-guest instance of "struct vdma_descr"

int vm_release_queue(unsigned id);

id: queue id

int vm_running(void);

not yet understood

int vm_setup_irqs(unsigned *irqs, unsigned count);

irqs: pointer to unsigned value to be used as interrupt bit-field

count: number of interrupts supported

**struct vdma_descr
{

unsigned addr;
unsigned size;
unsigned next;

}**

addr: pointer to data buffer

size: MSBit is a DONE flag; the remaining bits represent a data length field

next: pointer to next struct vdma_descr (some queues have a circular linked list, where the last entry points back to the first; other queues have a single entry and set this field to NULL)