}
-#if 0 //for multicore VNET
-/* used for poll pkt from virtio nic by VNET
- * only when vnet is running on sidecore */
-static int handle_pkt_tx_sidecore(struct guest_info *core, struct virtio_net_state * virtio)
-{
- struct virtio_queue * q = &(virtio->tx_vq);
- struct virtio_net_hdr * hdr = NULL;
- int recved = 0;
- unsigned long flags;
-
- if (!q->ring_avail_addr) {
- return -ERR_VIRTIO_TXQ_NOSET;
- }
-
- flags = v3_lock_irqsave(virtio->tx_lock);
-
- while (q->cur_avail_idx != q->avail->index) {
- struct vring_desc * hdr_desc = NULL;
- addr_t hdr_addr = 0;
- uint16_t desc_idx = q->avail->ring[q->cur_avail_idx % q->queue_size];
- int desc_cnt = get_desc_count(q, desc_idx);
- uint32_t req_len = 0;
- int i = 0;
-
- hdr_desc = &(q->desc[desc_idx]);
- if (v3_gpa_to_hva(core, hdr_desc->addr_gpa, &(hdr_addr)) == -1) {
- PrintError("Could not translate block header address\n");
- goto exit_error;
- }
-
- hdr = (struct virtio_net_hdr*)hdr_addr;
- desc_idx = hdr_desc->next;
-
- if(desc_cnt > 2){
- PrintError("VNIC: merged rx buffer not supported\n");
- goto exit_error;
- }
-
- for (i = 0; i < desc_cnt - 1; i++) {
- struct vring_desc * buf_desc = &(q->desc[desc_idx]);
- if (pkt_tx_sidecore(core, virtio, buf_desc) < 0) {
- PrintError("Error handling nic operation\n");
- goto exit_error;
- }
-
- req_len += buf_desc->length;
- desc_idx = buf_desc->next;
- }
- recved ++;
-
- q->cur_avail_idx ++;
- }
-
- if(recved) PrintDebug("VNIC: Tx polling %d pkts\n", recved);
-
- v3_unlock_irqrestore(virtio->tx_lock, flags);
-
- return 0;
-
-exit_error:
-
- v3_unlock_irqrestore(virtio->tx_lock, flags);
- return -ERR_VIRTIO_OTHER;
-}
-
-
-/* called by VNET, to notify Virtio to update the tx_queue used index
- * used only when vnet running on sidecore */
-static int update_tx_queue(struct virtio_net_state * virtio, int handled_pkt){
- struct virtio_queue * q = &(virtio->tx_vq);
- unsigned long flags;
-
- if (!q->ring_avail_addr) {
- return -ERR_VIRTIO_TXQ_NOSET;
- }
-
- flags = v3_lock_irqsave(virtio->tx_lock);
- while(handled_pkt > 0){
- q->used->ring[q->used->index % q->queue_size].id = q->avail->ring[virtio->cur_notify_tx_idx % q->queue_size];
- q->used->ring[q->used->index % q->queue_size].length = req_len; // TODO:
- q->used->index ++;
- virtio->cur_notify_tx_idx ++;
- handled_pkt --;
- }
- v3_unlock_irqrestore(virtio->tx_lock, flags);
-
- if (handled_pkt && (!(q->avail->flags & VIRTIO_NO_IRQ_FLAG))) {
- v3_pci_raise_irq(virtio->virtio_dev->pci_bus, 0, virtio->pci_dev);
- virtio->virtio_cfg.pci_isr = 0x1;
-
- /* do we need to notify here? */
- notify_guest(virtio);
- }
-
- virtio->pkt_sent += handled_pkt;
-
-#ifdef CONFIG_VNET_PROFILE
- if (virtio->pkt_sent % 50000 == 0){
- long cur_time, time;
- rdtscll(cur_time);
- time = cur_time - virtio_state->last_sent_time;
- PrintError("Virtio NIC: last sent 50000 cycles: %ld\n",time);
- PrintError("Virtio NIC: sent: %ld, rxed: %ld, dropped: %ld\n",
- virtio->pkt_sent,
- virtio->pkt_recv,
- virtio->pkt_drop);
- rdtscll(virtio->last_sent_time);
- }
-#endif
-
-
- return 0;
-}
-#endif
-
static int virtio_setup_queue(struct guest_info *core,
struct virtio_net_state * virtio_state,
struct virtio_queue * queue,
}
-#if 0 /* for encapuslation */
-/* virtio RX with encapulation version */
-static int virtio_rx_encap(uint8_t * data,
- uint32_t size,
- void * encap_header,
- uint16_t encap_len,
- void * private_data) {
- struct virtio_net_state * virtio = (struct virtio_net_state *)private_data;
- struct virtio_queue * q = &(virtio->rx_vq);
- struct virtio_net_hdr_mrg_rxbuf hdr;
- uint32_t hdr_len = sizeof(struct virtio_net_hdr_mrg_rxbuf);
- uint32_t data_len = size + encap_len;
- unsigned long flags;
- int ret_val = -ERR_VIRTIO_OTHER;
-
- if (q->ring_avail_addr == 0) {
- PrintError("Queue is not set\n");
- ret_val = -ERR_VIRTIO_RXQ_NOSET;
- goto exit;
- }
-
- memset(&hdr, 0, sizeof(struct virtio_net_hdr_mrg_rxbuf));
-
- flags = v3_lock_irqsave(virtio->rx_lock);
- if (q->cur_avail_idx != q->avail->index){
- addr_t hdr_addr = 0;
- uint16_t hdr_idx = q->avail->ring[q->cur_avail_idx % q->queue_size];
- uint16_t buf_idx = 0;
- struct vring_desc * hdr_desc = NULL;
- uint32_t offset = 0;
-
- hdr_desc = &(q->desc[hdr_idx]);
- if (guest_pa_to_host_va(&(virtio->virtio_dev->vm->cores[0]), hdr_desc->addr_gpa, &(hdr_addr)) == -1) {
- PrintError("Could not translate receive buffer address\n");
- goto exit;
- }
- hdr.num_buffers = 1;
- memcpy((void *)hdr_addr, &hdr, sizeof(struct virtio_net_hdr_mrg_rxbuf));
- if (offset >= data_len) {
- hdr_desc->flags &= ~VIRTIO_NEXT_FLAG;
- }
-
- struct vring_desc * buf_desc = NULL;
- uint32_t len = 0;
- buf_idx = hdr_desc->next;
- buf_desc = &(q->desc[buf_idx]);
-
- if(hdr_len > 0 && !encap_header) {
- len = copy_data_to_desc(&(virtio->virtio_dev->vm->cores[0]), virtio, buf_desc, encap_header, encap_len, 0);
- offset += len;
- }
-
- len = copy_data_to_desc(&(virtio->virtio_dev->vm->cores[0]), virtio, buf_desc, data + offset, data_len - offset, offset);
- offset += len;
-
- if(data_len < offset)/* if there is large pkt, need merge more buffer */
- PrintDebug("Virtio NIC: data pkt larger than RX queue buffer\n");
-
- buf_desc->length = offset;
- buf_desc->flags &= ~VIRTIO_NEXT_FLAG;
-
- q->used->ring[q->used->index % q->queue_size].id = q->avail->ring[q->cur_avail_idx % q->queue_size];
- q->used->ring[q->used->index % q->queue_size].length = data_len + hdr_len; /* This should be the total length of data sent to guest (header+pkt_data) */
- q->used->index++;
- q->cur_avail_idx++;
-
- /* notify guest
- * when it returns from EXIT, guest gets the virtio rx interrupt */
- if((++virtio->buffed_rx > q->queue_size/2) &&
- (q->avail->flags & VIRTIO_NO_IRQ_FLAG)) {
- if(virtio->virtio_dev->vm->cores[0].cpu_id != V3_Get_CPU()){
- notify_guest(virtio);
- }
- virtio->buffed_rx = 0;
- }
- ret_val = offset;
- } else {
- virtio->pkt_drop++;
- ret_val = -ERR_VIRTIO_RXQ_FULL;
- goto exit;
- }
- virtio->pkt_recv ++;
-
- if (!(q->avail->flags & VIRTIO_NO_IRQ_FLAG)) {
- PrintDebug("Raising IRQ %d\n", virtio->pci_dev->config_header.intr_line);
- v3_pci_raise_irq(virtio->virtio_dev->pci_bus, 0, virtio->pci_dev);
- virtio->virtio_cfg.pci_isr = 0x1;
- }
-
-#ifdef CONFIG_VNET_PROFILE
- if (virtio->pkt_recv % 50000 == 0){
- long cur_time, time;
- rdtscll(cur_time);
- time = cur_time - virtio->last_recv_time;
- PrintError("Virtio NIC: sent: %ld, rxed: %ld, dropped: %ld\n",
- virtio->pkt_sent,
- virtio->pkt_recv,
- virtio->pkt_drop);
- rdtscll(virtio->last_recv_time);
- }
-#endif
-
-exit:
-
- v3_unlock_irqrestore(virtio->rx_lock, flags);
-
- return ret_val;
-}
-#endif
-
-
-
static struct v3_device_ops dev_ops = {
.free = virtio_free,
.reset = NULL,
.stop = NULL,
};
-#if 0 //temporary hacking LX
-static struct virtio_net_state *vnic_states[2] = {NULL, NULL};
-static int num_vnic = 0;
-
-void vnic_polling(void *data){
- struct v3_vm_info *info = (struct v3_vm_info *)data;
- if(vnic_states[0] != NULL && info == vnic_states[0]->virtio_dev->vm){
- handle_pkt_tx(&(info->cores[0]), vnic_states[0]);
- }
-
- if(vnic_states[1] != NULL && info == vnic_states[1]->virtio_dev->vm){
- handle_pkt_tx(&(info->cores[0]), vnic_states[1]);
- }
-}
-#endif
/* TODO: Issue here: which vm info it needs? calling VM or the device's own VM? */
static void virtio_nic_poll(struct v3_vm_info *vm, void *data){
#endif
}
-#if 0 /* NAPI */
-/* tx one pkt from guest */
-static int virtio_tx_pkt(struct guest_info *core, struct virtio_net_state * virtio_state){
-
-}
-
-static void virtio_nic_poll(struct v3_vm_info *vm, void *data, int budget){
-
-
-}
-
-#endif
-
-
static void virtio_start_tx(void *data){
struct virtio_net_state * virtio = (struct virtio_net_state *)data;
