virtio_tx_local(struct virtio_net *dev, struct rte_mbuf *m)
{
struct virtio_net_data_ll *dev_ll;
struct ether_hdr *pkt_hdr;
uint64_t ret = 0;
pkt_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
/*get the used devices list*/
dev_ll = ll_root_used;
while (dev_ll != NULL) {
if (likely(dev_ll->dev->ready == DEVICE_READY) && ether_addr_cmp(&(pkt_hdr->d_addr),
&dev_ll->dev->mac_address)) {
/* Drop the packet if the TX packet is destined for the TX device. */
if (dev_ll->dev->device_fh == dev->device_fh) {
RTE_LOG(DEBUG, VHOST_DATA, "(%" PRIu64 ") TX: "
"Source and destination MAC addresses are the same. "
"Dropping packet.\n",
dev_ll->dev->device_fh);
return 0;
}
RTE_LOG(DEBUG, VHOST_DATA, "(%" PRIu64 ") TX: "
"MAC address is local\n", dev_ll->dev->device_fh);
if (dev_ll->dev->remove) {
/*drop the packet if the device is marked for removal*/
RTE_LOG(DEBUG, VHOST_DATA, "(%" PRIu64 ") "
"Device is marked for removal\n",
dev_ll->dev->device_fh);
} else {
/*send the packet to the local virtio device*/
ret = virtio_dev_rx(dev_ll->dev, &m, 1);
if (enable_stats) {
rte_atomic64_add(&dev_statistics[dev_ll->dev->device_fh].rx_total, 1);
rte_atomic64_add(&dev_statistics[dev_ll->dev->device_fh].rx, ret);
dev_statistics[dev->device_fh].tx_total++;
dev_statistics[dev->device_fh].tx += ret;
}
}
return 0;
}
dev_ll = dev_ll->next;
}
return -1;
}
/*
* This function registers mac along with a
* vlan tag to a VMDQ.
*/
static int
link_vmdq(struct virtio_net *dev)
{
int ret;
struct virtio_net_data_ll *dev_ll;
dev_ll = ll_root_used;
while (dev_ll != NULL) {
if ((dev != dev_ll->dev) && ether_addr_cmp(&dev->mac_address, &dev_ll->dev->mac_address)) {
RTE_LOG(INFO, VHOST_DATA, "(%"PRIu64") WARNING: This device is using an existing MAC address and has not been registered.\n", dev->device_fh);
return -1;
}
dev_ll = dev_ll->next;
}
/* vlan_tag currently uses the device_id. */
dev->vlan_tag = vlan_tags[dev->device_fh];
dev->vmdq_rx_q = dev->device_fh * (num_queues/num_devices);
/* Print out VMDQ registration info. */
RTE_LOG(INFO, VHOST_DATA, "(%"PRIu64") MAC_ADDRESS %02x:%02x:%02x:%02x:%02x:%02x and VLAN_TAG %d registered\n",
dev->device_fh,
dev->mac_address.addr_bytes[0], dev->mac_address.addr_bytes[1],
dev->mac_address.addr_bytes[2], dev->mac_address.addr_bytes[3],
dev->mac_address.addr_bytes[4], dev->mac_address.addr_bytes[5],
dev->vlan_tag);
/* Register the MAC address. */
ret = rte_eth_dev_mac_addr_add(ports[0], &dev->mac_address, (uint32_t)dev->device_fh);
if (ret) {
RTE_LOG(ERR, VHOST_DATA, "(%"PRIu64") Failed to add device MAC address to VMDQ\n",
dev->device_fh);
return -1;
}
/* Enable stripping of the vlan tag as we handle routing. */
rte_eth_dev_set_vlan_strip_on_queue(ports[0], dev->vmdq_rx_q, 1);
rte_compiler_barrier();
/* Set device as ready for RX. */
dev->ready = DEVICE_READY;
return 0;
}