+
/*
* This file is part of the Palacios Virtual Machine Monitor developed
* by the V3VEE Project with funding from the United States National
uint8_t mergeable_rx_bufs;
struct v3_timer * timer;
- struct vnet_thread * poll_thread;
-
struct nic_statistics stats;
struct v3_dev_net_ops * net_ops;
PrintDebug("Could not translate buffer address\n");
return -1;
}
-
+
V3_Net_Print(2, "Virtio-NIC: virtio_tx: size: %d\n", len);
if(net_debug >= 4){
v3_hexdump(buf, len, NULL, 0);
virtio->stats.tx_dropped ++;
return -1;
}
-
+
virtio->stats.tx_pkts ++;
virtio->stats.tx_bytes += len;
-
+
return 0;
}
uint_t dst_offset){
uint32_t len;
uint8_t * desc_buf = NULL;
-
+
if (v3_gpa_to_hva(core, desc->addr_gpa, (addr_t *)&(desc_buf)) == -1) {
PrintDebug("Could not translate buffer address\n");
return -1;
/* here we assumed that one ethernet pkt is not splitted into multiple buffer */
struct vring_desc * buf_desc = &(q->desc[desc_idx]);
if (tx_one_pkt(core, virtio_state, buf_desc) == -1) {
- PrintError("Virtio NIC: Error handling nic operation\n");
- goto exit_error;
+ PrintError("Virtio NIC: Fails to send packet\n");
}
if(buf_desc->next & VIRTIO_NEXT_FLAG){
PrintError("Virtio NIC: TX more buffer need to read\n");
}
-
- 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 = buf_desc->length; /* What do we set this to???? */
- q->used->index ++;
+ 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 =
+ buf_desc->length; /* What do we set this to???? */
+
+ q->used->index ++;
q->cur_avail_idx ++;
if(++txed >= quote && quote > 0){
break;
}
}
-
+
v3_unlock_irqrestore(virtio_state->tx_lock, flags);
-
+
if (txed && !(q->avail->flags & VIRTIO_NO_IRQ_FLAG)) {
v3_pci_raise_irq(virtio_state->virtio_dev->pci_bus,
0, virtio_state->pci_dev);
virtio_state->stats.rx_interrupts ++;
}
- V3_Print("Virtio Intr Line %d\n", virtio_state->pci_dev->config_header.intr_line);
-
if(txed > 0) {
V3_Net_Print(2, "Virtio Handle TX: txed pkts: %d, left %d\n", txed, left);
}
return left;
-
-exit_error:
-
+
+ exit_error:
+
v3_unlock_irqrestore(virtio_state->tx_lock, flags);
return -1;
}
pfn, page_addr);
if(virtio->tx_notify == 0){
disable_cb(&virtio->tx_vq);
- vnet_thread_wakeup(virtio->poll_thread);
}
+ virtio->status = 1;
break;
case 2:
virtio_setup_queue(core, virtio,
static int virtio_poll(int quote, void * data){
struct virtio_net_state * virtio = (struct virtio_net_state *)data;
- return handle_pkt_tx(&(virtio->vm->cores[0]), virtio, quote);
+ if (virtio->status) {
+
+ return handle_pkt_tx(&(virtio->vm->cores[0]), virtio, quote);
+ }
+
+ return 0;
}
static int register_dev(struct virtio_dev_state * virtio,
return 0;
}
-
#define RATE_UPPER_THRESHOLD 10 /* 10000 pkts per second, around 100Mbits */
#define RATE_LOWER_THRESHOLD 1
#define PROFILE_PERIOD 10000 /*us*/
V3_Print("Virtio NIC: Switch TX to VMM driven mode\n");
disable_cb(&(net_state->tx_vq));
net_state->tx_notify = 0;
- vnet_thread_wakeup(net_state->poll_thread);
}
if(tx_rate < RATE_LOWER_THRESHOLD && net_state->tx_notify == 0){
net_state->net_ops = ops;
net_state->backend_data = private_data;
net_state->virtio_dev = virtio;
- net_state->tx_notify = 0;
- net_state->rx_notify = 0;
+
+ net_state->tx_notify = 1;
+ net_state->rx_notify = 1;
net_state->timer = v3_add_timer(&(info->cores[0]),
- &timer_ops,net_state);
+ &timer_ops,net_state);
ops->recv = virtio_rx;
ops->poll = virtio_poll;
ops->config.fnt_mac = V3_Malloc(ETH_ALEN);
memcpy(ops->config.fnt_mac, virtio->mac, ETH_ALEN);
- net_state->status = 1;
-
return 0;
}